Heat exchange assembly, battery and electrical device

Abstract

A heat exchange assembly, a battery and an electrical device. The heat exchange assembly is configured to exchange heat with battery cells, comprising a plurality of heat exchange tubes. Each heat exchange tube has two ends; when one of the two ends is used for liquid intake, the other end is used for liquid output. A converging position is formed locally on at least one side of the periphery of the heat exchange assembly, and at least one end of each heat exchange tube extends to the converging position.

Description

Heat exchange components, batteries and electrical devices

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is based on the Chinese patent application with application number 202420286907.8 and application date of February 6, 2024, and claims the priority of the above-mentioned Chinese patent application. The entire content of the above-mentioned Chinese patent application is hereby introduced into this application as a reference. Technical Field

[0003] The present application relates to the field of battery technology, and in particular to a heat exchange component, a battery, and an electrical device. Background Art

[0004] New energy vehicles have experienced rapid growth in recent years. Batteries, as the power source, play an irreplaceable and crucial role in electric vehicles. Typically, batteries utilize heat exchange components to control the temperature of individual cells. However, assembly of these components is complex, making it difficult to improve battery assembly efficiency.

[0005] Summary of the Invention

[0006] The present application proposes a heat exchange component, a battery, and an electrical device, which are conducive to improving the assembly convenience and sealing convenience of the battery.

[0007] In a first aspect, an embodiment of the present application provides a heat exchange assembly, which is used for heat exchange with a battery cell and includes: a plurality of heat exchange tubes, each heat exchange tube having two ends, and when one of the two ends is used for liquid inlet, the other is used for liquid outlet; a portion of at least one side of the circumference of the heat exchange assembly forms a retracted position, and at least one end of each heat exchange tube extends to the retracted position.

[0008] In the above technical solution, a folding position is formed locally on at least one side of the circumference of the heat exchange component, and at least one end of each heat exchange tube extends to the folding position, so that the folding position corresponds to multiple ends, and the multiple ends corresponding to the folding position are relatively concentratedly arranged, so that during the assembly process of the heat exchange component, the multiple ends corresponding to the folding position can be quickly and simultaneously aligned with other components (such as the collector, fixed beam, and expansion beam described later), which is conducive to improving the assembly convenience and assembly efficiency of the heat exchange component while achieving good assembly accuracy for each end. In addition, if it is necessary to seal the entire heat exchange component, the sealing at the multiple ends can be directly achieved at the folding position, which is conducive to simplifying the sealing of the heat exchange component; when other components are provided with avoidance structures for avoiding the folding position, the above setting is also conducive to reducing the number of avoidance structures. At the same time, if the avoidance structure will cause a certain weakening of the structural strength of other components, the above setting is conducive to reducing the weakening effect of the avoidance structure on other components.

[0009] In some embodiments, the size of the folded position on the corresponding side of the heat exchange component is less than or equal to 1 / 3 of the size of the corresponding side of the heat exchange component; optionally, the size of the folded position on the corresponding side of the heat exchange component is less than or equal to 1 / 5 of the size of the corresponding side of the heat exchange component.

[0010] In the above technical solution, by setting the size of the folding position on the corresponding side of the heat exchange component to be less than or equal to 1 / 3 of the size of the corresponding side of the heat exchange component, it is convenient to further realize the concentrated setting of multiple ends at the corresponding folding position, which is beneficial to further save the space occupied by the folding position and facilitate the assembly and sealing of the heat exchange component at the folding position; at the same time, since the end corresponding to the folding position is used for liquid inlet and / or liquid outlet, the temperature of the medium in the end is relatively high or low, and the setting of the folding position will cause the temperature of the corresponding area to increase or decrease in a concentrated manner, and the size occupied by the folding position on the corresponding side of the heat exchange component is small, then because the influence range of the temperature of the medium in the end corresponding to the folding position will also be correspondingly smaller, it is beneficial to reduce the temperature concentration of the area corresponding to the folding position R, so as to improve the temperature uniformity of the battery to a certain extent.

[0011] In some embodiments, all the collapsed positions of the heat exchange assembly are located on one of the peripheral sides of the heat exchange assembly.

[0012] In the above technical solution, by setting all the folding positions of the heat exchange component to be located on one side of the circumferential side of the heat exchange component, the setting of all the folding positions of the heat exchange component is relatively concentrated, which is convenient for simplifying the alignment of the heat exchange component with other components during the assembly process of the heat exchange component, and is conducive to the rapid and simultaneous assembly of all folding positions, thereby further improving the assembly efficiency of the heat exchange component.

[0013] In some embodiments, the plurality of heat exchange tubes are arranged at intervals or arranged around each other.

[0014] In the above technical solution, by arranging multiple heat exchange tubes at intervals or arranging them around each other, it is beneficial to make full use of the layout space of multiple heat exchange tubes, so that when the heat exchange assembly is used for a battery, each electromagnetic cell can correspond to the appropriate part of the heat exchange tube, so as to better meet the heat exchange requirements of each battery cell.

[0015] In some embodiments, the spacing between any two adjacent ends of the retracted position is less than the maximum radial dimension of the outer contour of the cross section of the end, and the retracted position is one or more, and both ends of the heat exchange tube extend to the same retracted position; or, the retracted position is multiple, and the two ends of each heat exchange tube extend to different retracted positions.

[0016] In the above technical solution, by arranging that both ends of the heat exchange tube extend to the same retracted position, or that the two ends of each heat exchange tube extend to different retracted positions, the number of heat exchange tubes and the number of retracted positions are relatively flexible, which facilitates the flexible design of the heat exchange component.

[0017] In some embodiments, the retracted position is located between corresponding ends of the heat exchange component; or, at least a portion of the retracted position is disposed beyond a corresponding end of the heat exchange component.

[0018] In the above technical solution, by setting the folding position between the corresponding two ends of the heat exchange component, or at least partially exceeding the corresponding end of the heat exchange component, it is convenient to flexibly set the folding position on the corresponding side of the heat exchange component, which is beneficial to match the folding position with the arrangement of multiple heat exchange tubes, etc., and is beneficial to improving the convenience of arranging multiple heat exchange tubes.

[0019] In some embodiments, there is one folding position, which is arranged relative to the middle of the corresponding side of the heat exchange component; or, the folding position is arranged relative to one end of the corresponding side of the heat exchange component.

[0020] In the above technical solution, by setting the folding position opposite to the middle of the corresponding side of the heat exchange component, or opposite to the end of the corresponding side of the heat exchange component, so as to realize the folding arrangement of all ends of the heat exchange component, the folding position of the appropriate position is reasonably selected according to the arrangement of the heat exchange tubes, so that all ends can be smoothly extended to the folding position.

[0021] In some embodiments, the plurality of heat exchange tubes are arranged at intervals along the first direction, and the two heat exchange tubes at both ends are arranged symmetrically about a center line of the heat exchange assembly that is perpendicular to the first direction.

[0022] In the above technical solution, by arranging multiple heat exchange tubes at intervals, it is convenient to simplify the arrangement of multiple heat exchange tubes, and the two heat exchange tubes at both ends are arranged symmetrically about the center line, so that when other conditions are the same, the two heat exchange tubes at both ends can achieve basically the same temperature regulation capability. When the heat exchange assembly is used for a battery, it is convenient for the heat exchange assembly to achieve basically the same temperature control for the outer battery cells, which is beneficial to reduce the temperature difference between multiple battery cells and improve battery reliability.

[0023] In some embodiments, the two ends of the heat exchange tube are respectively a first end and a second end, one of the first end and the second end is used for liquid inlet, and the other is used for liquid outlet, all first ends of two adjacent heat exchange tubes spaced apart along the first direction are located between the two second ends of the two adjacent heat exchange tubes, and all first ends and all second ends of the two adjacent heat exchange tubes extend to the same retracted position.

[0024] In the above technical solution, by arranging that all the second ends of two adjacent heat exchange tubes spaced apart along the first direction are located between the two first ends of the two adjacent heat exchange tubes, and all the first ends and all the second ends of the two adjacent heat exchange tubes extend to the same retracted position, it is beneficial to simplify the connection between the two adjacent heat exchange tubes and the liquid supply flow path and the liquid outlet flow path, and at the same time it is beneficial to shorten the length of the liquid supply flow path and the liquid outlet flow path.

[0025] In some embodiments, the two ends of the heat exchange tube are respectively a first end and a second end, the first end is used for liquid inlet, and the second end is used for liquid outlet, the multiple retracted positions include a first retracted position and a second retracted position, the first end of each heat exchange tube extends to the first retracted position, and the second end of each heat exchange tube extends to the second retracted position; or, the first end of at least one heat exchange tube and the second end of at least one heat exchange tube both extend to the first retracted position, and the second end of at least one heat exchange tube and the first end of at least one heat exchange tube both extend to the second retracted position.

[0026] In the above technical solution, by setting all first ends to extend to the first retracted position and all second ends to extend to the second retracted position, it is convenient to realize the separate arrangement of all liquid inlet ends and all liquid outlet ends, and it is convenient to connect all heat exchange tubes of the heat exchange component to the medium circulation system, and realize the parallel arrangement of multiple heat exchange tubes; by setting the first retracted position and the second retracted position to correspond to at least one first end and at least one second end, it is conducive to flexible matching of different heat exchange requirements of battery cells.

[0027] In some embodiments, the heat exchange assembly further includes at least one fluid collector, which corresponds one-to-one to the retraction position; the fluid collector connects to the interfaces at multiple ends corresponding to the retraction position, or the fluid collector separates the interfaces at multiple ends corresponding to the retraction position into multiple independent flow channels.

[0028] In the above technical solution, by setting a collector, multiple ends located at the same retracted position share the same collector, so as to improve the overall structural stability and reliability of the heat exchange component while ensuring the normal circulation of the medium in each heat exchange tube.

[0029] In some embodiments, each heat exchange tube further has a connecting section connected between two ends, and central axes of at least the connecting sections of all heat exchange tubes are located in the same plane.

[0030] In the above technical solution, by setting the central axes of all heat exchange tubes in the same plane, it is convenient to improve the assembly consistency of multiple heat exchange tubes, which is conducive to achieving basically the same thermal resistance between each heat exchange tube and the corresponding battery cell, thereby improving heat exchange balance.

[0031] In some embodiments, the heat exchange tube is a flat tube or a harmonica tube.

[0032] In the above technical solution, by setting the heat exchange tube as a flat tube or a harmonica tube, it is beneficial to save the space occupied by the heat exchange tube, and at the same time, it is convenient to use the thick side of the heat exchange tube to exchange heat with the battery cell, so as to achieve a balance between the volume energy density and thermal management of the battery. For example, the heat exchange tube can be extruded, and the thickness of the heat exchange tube can be as small as about 0.7mm. In the related art, a water-cooled plate structure is adopted. The water-cooled plate usually includes two stacked plates, which are welded and fixed to define a flow channel. For this reason, the thickness of the water-cooled plate is usually thick glue, which can reach more than 2.4mm. It can be seen that the above-mentioned setting of the present application can reduce the cost of the heat exchange component, while saving the space occupied by the heat exchange component, and facilitating the improvement of the battery energy density when the heat exchange component is arranged in the box.

[0033] In some embodiments, each heat exchange tube also has a connecting section connected between the two ends, at least one heat exchange tube is configured as a first heat exchange tube, the connecting section of the first heat exchange tube includes a first heat exchange section and a second heat exchange section, the second heat exchange section is bent to form a U-shaped area, the first heat exchange section is bent and arranged in the U-shaped area, and is bent and connected to the second heat exchange section.

[0034] In the above technical solution, the second heat exchange section is bent to form a U-shaped area, and the first heat exchange section is bent and arranged in the U-shaped area. When the first heat exchange tube exchanges heat with multiple battery cells, the U-shaped area formed by the outer second heat exchange section can be opposite to the outer battery cells, and the first heat exchange section in the U-shaped area can be opposite to the internal battery cells, so that the first heat exchange tube can compensate for the internal and external temperature difference caused by the heat exchange between the outer battery cells and the environment, so that the heat exchange effect of the outer battery cells and the internal battery cells tends to be consistent, thereby improving the temperature uniformity of the battery, thereby improving the battery life to a certain extent.

[0035] In some embodiments, the first heat exchange section includes a first heat exchange part and a first bending part. There are multiple first heat exchange parts and they are arranged at intervals along the first direction. Each first heat exchange part extends along the second direction. The first bending part is arc-shaped and is bent and connected between two adjacent first heat exchange parts so that multiple first heat exchange parts are connected in sequence, and the second direction is set at an angle to the first direction.

[0036] In the above technical solution, on the one hand, by setting up multiple first heat exchange parts, the heat exchange area of ​​the first heat exchange section can be increased, and then the heat exchange area of ​​the first heat exchange tube can be increased, thereby improving the heat exchange effect of the first heat exchange tube; on the other hand, since the internal battery cells are wrapped by the external battery cells, the temperature difference between the internal battery cells is not large. Therefore, by setting up multiple first heat exchange parts, the overall heat exchange effect can be guaranteed while ensuring that the temperature difference between the internal and external battery cells is small.

[0037] In some embodiments, the second heat exchange section includes a second heat exchange part, a third heat exchange part and a fourth heat exchange part, the second heat exchange part extends along the first side circumference of the first heat exchange section, the third heat exchange part is connected between the second heat exchange part and the first heat exchange section, and extends along the second side circumference of the first heat exchange section, the first end of the third heat exchange part is connected to the second heat exchange part at an angle, the second end of the third heat exchange part is connected to the first heat exchange section at an angle, the fourth heat exchange part is connected to the second heat exchange part, and is connected to the second heat exchange part at an angle, and the fourth heat exchange part extends along the third side circumference of the first heat exchange section.

[0038] In the above technical solution, by arranging the second heat exchange part, the third heat exchange part and the fourth heat exchange part on three sides of the first heat exchange section respectively, the second heat exchange section can surround the first heat exchange section, thereby increasing the compactness of the arrangement of the first heat exchange tube and realizing the miniaturization of the structure of the first heat exchange tube, which is beneficial to improving the volume energy density of the battery. At the same time, it can also simplify the structure of the first heat exchange tube and facilitate the processing and production of the first heat exchange component.

[0039] In some embodiments, the first heat exchange section includes a plurality of first heat exchange parts, and the plurality of first heat exchange parts are bent and connected in sequence in the first direction; wherein, the second heat exchange part is located on one side of the plurality of first heat exchange parts along the first direction, and the third heat exchange part is located on one side of the plurality of first heat exchange parts along the second direction, and the first direction and the second direction are arranged at an angle; a first end of the third heat exchange part is connected to one end of the second heat exchange part along the second direction, and a second end of the third heat exchange part is connected to one of the plurality of first heat exchange parts farthest from the second heat exchange part along the first direction; a fourth heat exchange part is located on the other side of the plurality of first heat exchange parts along the second direction, one end of the fourth heat exchange part is connected to one end of the second heat exchange part away from the third heat exchange part, and the other end of the fourth heat exchange part is connected to the One end extends along the first direction toward a direction away from the second heat exchange part; or, the second heat exchange part is located on one side of the multiple first heat exchange parts along the second direction, and the third heat exchange part is located on one side of the multiple first heat exchange parts along the first direction, and the first direction and the second direction are arranged at an angle; the first end of the third heat exchange part is connected to one end of the second heat exchange part along the first direction, the second end of the third heat exchange part is connected to one of the multiple first heat exchange parts that is closest to the third heat exchange part along the first direction, the fourth heat exchange part is located on the other side of the multiple first heat exchange parts along the first direction, one end of the fourth heat exchange part is connected to one end of the second heat exchange part away from the third heat exchange part, and the other end of the fourth heat exchange part extends along the second direction toward a direction away from the second heat exchange part.

[0040] In the above embodiment, a plurality of first heat exchange parts are provided which are bent and connected in sequence in the first direction, the second heat exchange part is located on one side of the plurality of first heat exchange parts along the first direction / second direction, the third heat exchange part is located on one side of the plurality of first heat exchange parts along the second direction / first direction, and the fourth heat exchange part is located on the other side of the plurality of first heat exchange parts along the second direction / second direction. The positional relationship among the second heat exchange part, the third heat exchange part, the fourth heat exchange part and the first heat exchange part is limited, the layout of the first heat exchange tube is further limited, the structure of the first heat exchange tube is simplified, and processing and manufacturing are facilitated.

[0041] In some embodiments, the second heat exchange section further includes a fifth heat exchange portion, which extends along the fourth side periphery of the first heat exchange section and closes at least part of the opening of the U-shaped area formed by the second heat exchange portion, the third heat exchange portion and the fourth heat exchange portion.

[0042] In the above embodiment, by providing the fifth heat exchange part, the second heat exchange section can perform heat exchange on the four sides of the assembly composed of all battery cells. In this way, the second heat exchange section of a first heat exchange tube can be used to perform heat exchange on the four sides of the assembly composed of multiple battery cells, which is beneficial to improving the heat exchange effect on the four sides of the battery and enhancing the temperature uniformity of the battery.

[0043] In some embodiments, the first heat exchange section is connected to the downstream of the second heat exchange section along the direction of fluid flow; alternatively, the first heat exchange tube is configured such that: when heating the battery cell, the first heat exchange section is connected to the downstream of the second heat exchange section along the direction of fluid flow; when cooling the battery cell, the first heat exchange section is connected to the upstream of the second heat exchange section along the direction of fluid flow.

[0044] In the above technical solution, by connecting the first heat exchange section downstream of the second heat exchange section along the fluid flow direction, the first heat exchange channel can preferentially exchange heat along the outer circumference of the battery, thereby improving the temperature difference between the battery in different environments and, to a certain extent, increasing the battery's service life. By configuring the first heat exchange tube so that: when heating the battery cell, the first heat exchange section is connected downstream of the second heat exchange section along the fluid flow direction; when cooling the battery cell, the first heat exchange section is connected upstream of the second heat exchange section along the fluid flow direction, the heat exchange effect on the battery can be further improved, and the temperature uniformity of multiple battery cells can be improved.

[0045] In some embodiments, at least one heat exchange tube is configured as a second heat exchange tube, the second heat exchange tube and the first heat exchange tube are arranged on the same side of the battery cell, the connecting section of the second heat exchange tube is bent and arranged in the U-shaped area of ​​the first heat exchange tube, and the bending structure of the connecting section of the second heat exchange tube and the connecting section of the first heat exchange tube are the same or different.

[0046] In the above technical solution, by setting a second heat exchange tube, the diversity of the heat exchange flow channel of the heat exchange component can be increased, making the arrangement of the heat exchange tube more flexible, which is conducive to further improving the heat exchange effect of the heat exchange component and improving the temperature uniformity of the battery.

[0047] In some embodiments, the connecting section of the second heat exchange tube includes a U-shaped region with the same structure as the connecting section of the first heat exchange tube, and at least part of the first heat exchange section of the connecting section of the first heat exchange tube is arranged in the U-shaped region of the second heat exchange tube.

[0048] In the above technical solution, by arranging at least part of the first heat exchange section of the first heat exchange tube within the U-shaped area of ​​the second heat exchange tube, the first heat exchange tube and the second heat exchange tube can be arranged around each other. In this way, the winding method of multiple heat exchange tubes can be arranged according to the heat exchange requirements of various parts of the battery assembly, further increasing the heat exchange effect of the heat exchange assembly and improving the temperature uniformity of the battery.

[0049] In some embodiments, the connecting section of the second heat exchange tube includes a third heat exchange section and a fourth heat exchange section that are bent and connected, and the third heat exchange section and the fourth heat exchange section are respectively bent to form a U-shaped area, and the third heat exchange section is arranged in the U-shaped area of ​​the fourth heat exchange section, and at least part of the first heat exchange section of the first heat exchange tube is arranged in the U-shaped area of ​​the third heat exchange section.

[0050] In the above technical solution, by arranging the above-mentioned at least part of the first heat exchange section of the first heat exchange tube to be arranged in the U-shaped area of ​​the third heat exchange section, the above-mentioned at least part of the first heat exchange section of the first heat exchange tube is also located in the U-shaped area of ​​the fourth heat exchange section. On the premise that the first heat exchange tube and the second heat exchange tube are wound around each other, it is convenient to simplify the winding arrangement of the two, and at the same time it is beneficial to further improve the heat exchange effect and improve the temperature uniformity of the battery.

[0051] In some embodiments, the connecting section of the second heat exchange tube also includes a fifth heat exchange section, the fifth heat exchange section includes a fifth heat exchange part and a second bending part, there are multiple fifth heat exchange parts and they are arranged at intervals along the third direction, each fifth heat exchange part extends along the fourth direction, the second bending part is arc-shaped and is bent and connected between two adjacent fifth heat exchange parts, so that multiple fifth heat exchange parts are connected in sequence, and the fourth direction is set at an angle to the third direction, wherein a fifth heat exchange section is provided between the third heat exchange section and the fourth heat exchange section, and / or a fifth heat exchange section is provided between the third heat exchange section and the corresponding end.

[0052] In the above technical solution, by setting the fifth heat exchange section, it is convenient to further increase the heat exchange area of ​​the second heat exchange tube, improve the heat exchange effect of the second heat exchange tube, and at the same time be conducive to achieving temperature control of the internal battery cells. Moreover, the setting of the fifth heat exchange section will not affect the mutual winding between the first heat exchange tube and the second heat exchange tube.

[0053] In some embodiments, at least one heat exchange tube is configured as a third heat exchange tube, and a connecting section of the third heat exchange tube is bent and disposed in the U-shaped region of the second heat exchange tube.

[0054] In the above technical solution, the connecting section of the third heat exchange tube is bent within the U-shaped area of ​​the second heat exchange tube to further achieve good temperature control of the internal battery cells, which is beneficial to improving the temperature distribution of the entire battery and facilitating the improvement of the temperature uniformity of the battery.

[0055] In the second aspect, an embodiment of the present application provides a battery, comprising a casing and a battery cell, wherein the battery cell is disposed in the casing; the battery further comprises at least one of a first heat exchange component, a second heat exchange component and a third heat exchange component, wherein at least one of the first heat exchange component, the second heat exchange component and the third heat exchange component is used for heat exchange with the battery cell and is the above-mentioned heat exchange component, the first heat exchange component is disposed in the casing and between the battery cell and the casing, the second heat exchange component is disposed outside the casing, and the third heat exchange component is disposed between two adjacent battery cells.

[0056] In the above technical solution, at least one of the first heat exchange component, the second heat exchange component and the third heat exchange component is set as the above heat exchange component and is used for heat exchange with the battery cell. Since the heat exchange component is easy to assemble and seal, it is beneficial to improve the assembly efficiency of the battery.

[0057] In some embodiments, the battery includes a first heat exchange component and a fixed beam. The fixed beam is arranged in the box body and divides the internal space of the box body into a first cavity and a second cavity. A portion of the first heat exchange component and the battery cell are both arranged in the first cavity. At least one avoidance channel is formed between the fixed beam and the box body. All ends at the folded position are passed through the corresponding avoidance channel so that the ends extend from the first cavity to the second cavity.

[0058] In the above technical solution, at least one avoidance channel is formed between the fixed beam and the box body, and all the ends at the folded position are passed through the corresponding avoidance channel so that the ends extend from the first cavity to the second cavity, which facilitates the assembly of all the ends at the folded position with the fixed beam, and facilitates all the ends at the folded position to extend to the second cavity without bending around the fixed beam, which is beneficial to simplifying the structure of all the ends at the folded position; at the same time, the setting of the above avoidance channel can make the interface of the end portion located in the second cavity, that is, the interface of the end portion and the battery cell are located in different cavities respectively, which is beneficial to the box body providing suitable layout space for the interface of the end portion to be connected with other components, and facilitates the connection setting of the end portion with other components. At the same time, the fixed beam can separate the interface position of the end portion from the battery cell, which is beneficial to reduce the impact of heat exchange medium leakage at the interface position of the end portion on the battery cell, and facilitates improving the reliability of the battery cell.

[0059] In some embodiments, the fixed beam has a first recess, and / or the wall of the box has a second recess, and the first recess and / or the second recess form an avoidance channel.

[0060] In the above technical solution, an avoidance channel is constructed by setting a first recess and / or a second recess, which facilitates the forming of the avoidance channel and at the same time facilitates the avoidance channel to have a suitable cross-sectional area that can accommodate all ends of the corresponding folding position according to needs, so that on the premise of achieving smooth penetration of all ends of the folding position, the cross-sectional area of ​​the avoidance channel can be appropriately reduced, which is beneficial to reducing the difficulty of forming the avoidance channel and / or reducing the weakening of the fixed beam.

[0061] In some embodiments, portions of all the ends at the folded position located on opposite sides of the fixed beam are connected at an obtuse angle.

[0062] In the above technical solution, the parts of all the ends of the folded position located on the opposite sides of the fixed beam are connected at an obtuse angle, so that during the assembly process of the first heat exchange component, one end of all the ends of the folded position is first aligned with the avoidance channel. At this time, the first heat exchange component is roughly tilted. As all the ends of the folded position are passed through, the inclination angle of the first heat exchange component gradually decreases until all the ends of the folded position are completely passed through. At this time, most of the first heat exchange component is in contact with the corresponding wall of the box, which facilitates the passing of all the ends of the folded position and is beneficial to improving the installation convenience of the first heat exchange component.

[0063] In some embodiments, the first heat exchange component also includes at least one fluid collector, which is located in the second cavity and corresponds one-to-one to the retracted position; the fluid collector connects to the interfaces of multiple ends corresponding to the retracted position, or the fluid collector separates the interfaces of multiple ends corresponding to the retracted position into multiple independent channels.

[0064] In the above technical solution, by setting a current collector, multiple ends located at the same retracted position share the same current collector, so as to facilitate improving the overall structural stability and reliability of the heat exchange component while ensuring the normal circulation of the medium in each heat exchange tube; at the same time, since the current collector is arranged in the second cavity, the current collector will not occupy the space of the avoidance channel or the first cavity, so that the arrangement of the current collector is not likely to affect the energy density of the battery, and is not likely to affect the arrangement of the fixed beam and / or the box.

[0065] In some embodiments, the avoidance channel is configured to allow the corresponding current collector to pass through.

[0066] In the above technical solution, by setting up an avoidance channel structure to allow the corresponding collector to pass through, the heat exchange tube can be fixedly connected to the collector, and after the fixed beam and the box body are assembled, the structure connecting the heat exchange tube and the collector is assembled to the box body, so as to achieve sufficient operating space when connecting the heat exchange tube and the collector, and facilitate the connection operation of the heat exchange tube and the collector.

[0067] In some embodiments, the fixed beam is configured as an expansion beam and has a first mating surface that abuts against the battery cell. The battery also includes: a carrier, the carrier is arranged in the avoidance channel and has a second mating surface that abuts against the battery cell. The first mating surface is flush with the second mating surface. The carrier has a groove at the end that avoids the corresponding folded position, and the groove runs through the outer peripheral side of the carrier.

[0068] In the above technical solution, by arranging a support in the avoidance channel and making the second mating surface flush with the first mating surface, the support can bear the expansion force of the battery cell together with the fixed beam, which is beneficial to reducing the risk of lithium plating caused by excessive deformation difference between the battery cell at the avoidance channel position and other positions. It is also beneficial to reduce the risk of battery cell shell rupture and electrolyte leakage due to uneven force, thereby improving the reliability of battery use.

[0069] In some embodiments, a stop portion that abuts against the supporting member is formed on at least one of the fixed beam and the box body to limit the movement of the supporting member from the first cavity toward the second cavity.

[0070] In the above technical solution, a stop portion is formed on at least one of the fixed beam and the box body to limit the movement of the carrier along the direction from the first cavity toward the second cavity, so as to achieve reliable positioning of the carrier in the width direction of the fixed beam, so that the carrier has a certain load-bearing capacity to withstand the expansion force of the battery cell.

[0071] In some embodiments, a stop portion is formed on the side of the fixed beam facing the first cavity at the avoidance channel position; and / or, the wall of the box body where the first heat exchange component is set is formed with a stop step protruding toward the fixed beam, and the stop step forms the stop portion.

[0072] In the above technical solution, a stop portion is formed at the avoidance channel position on the side of the fixed beam facing the first cavity, and / or a stop step configured as a stop portion is formed on the wall of the box body, which facilitates the limitation of the carrier, is beneficial to improving the limiting reliability of the carrier, and thus facilitates improving the carrying capacity of the carrier.

[0073] In some embodiments, in a cross section of the fixed beam, the stopper on the fixed beam is formed into an arc-shaped structure, and the cross section of the fixed beam is perpendicular to the length direction of the fixed beam.

[0074] In the above technical solution, the stop portion on the fixed beam is set to an arc-shaped structure, so that under the premise that the stop portion can realize reliable limiting of the carrier, the part of the carrier that cooperates with the stop portion can be avoided to a certain extent, so as to improve the carrier's easy protrusion toward the first cavity due to cooperation with the stop portion. The first mating surface is set flush with the first mating surface.

[0075] In some embodiments, the supporting member includes: a plate body portion, a surface on one side of the thickness of the plate body portion is formed as a second mating surface, and a groove runs through both sides of the thickness of the plate body portion; a mating portion, the mating portion is formed at the outer edge of the plate body portion, and is engaged with the fixed beam to limit the movement of the supporting member along the direction from the first cavity to the second cavity.

[0076] In the above technical solution, by setting the supporting member to include a plate body and a matching part, the plate body can provide a larger and relatively flat second matching surface, thereby improving the supporting member's ability to block the avoidance channel, and the supporting member has a simple structure and is easy to implement.

[0077] In some embodiments, the mating portion has a first surface and a second surface, the first surface is formed as an arc-shaped surface concave toward the second surface and mated with the fixed beam, and the second surface is connected to the first surface and is flush with the second mating surface.

[0078] In the above technical solution, by setting the first surface of the matching part to be in abutment with the fixed beam and the second surface to be flush with the second matching surface, it is convenient to achieve limited matching between the carrier and the fixed beam. At the same time, the matching part will not protrude from the second matching surface toward the first cavity, and will not affect the matching between the second matching surface and the battery cell.

[0079] In some embodiments, at least one latch hole is formed on the expansion beam, and the supporting member further includes: at least one hook portion, the hook portion is formed at the outer edge of the plate body and is located on the side of the plate body away from the second mating surface, and the hook portion is clamped in the corresponding latch hole.

[0080] In the above technical solution, by setting a card hole, the hook part is locked in the corresponding card hole to limit the movement of the carrier in the direction from the second cavity to the first cavity, which is beneficial to further improve the installation reliability of the carrier, improve the problem that the carrier is easy to escape from the avoidance channel along the direction from the second cavity to the first cavity during the battery assembly process, and is beneficial to further improve the battery assembly efficiency.

[0081] In some embodiments, the carrier further includes: at least one supporting portion, which is provided on a side of the plate portion away from the second mating surface and is arranged to avoid the first heat exchange component, and the supporting portion is in a stop-fitting engagement with the box body.

[0082] In the above embodiment, by providing the support portion, it is beneficial to further improve the structural strength and bearing capacity of the bearing member. At the same time, since the support portion and the box body are stopped, it is beneficial to further improve the limiting reliability of the bearing member in the width direction of the expansion beam, thereby facilitating the improvement of the bearing capacity of the bearing member.

[0083] In some embodiments, the bearing member is disposed between the first heat exchange component and the fixed beam, and the thermal conductivity of the bearing member is lower than the thermal conductivity of the fixed beam; and / or, the bearing member is spaced apart from the first heat exchange component.

[0084] In the above technical solution, by setting the thermal conductivity of the support member to be lower than the thermal conductivity of the fixed beam, and / or setting the support member and the first heat exchange component at a distance, it is convenient to increase the thermal resistance between the first heat exchange component and the fixed beam, and reduce the heat exchange between the first heat exchange component and the support member and the expansion beam, which is beneficial to increase the proportion of heat or cold transferred from the first heat exchange component to the battery cell and improve the thermal management performance.

[0085] In some embodiments, the strength of the material of the load-bearing member is at least 0.8 times the strength of the material of the fixing beam.

[0086] In the above technical solution, by setting the strength of the material of the supporting member to be at least 0.8 times the strength of the material of the fixing beam, the supporting member itself has a good load-bearing capacity, so as to reliably and stably withstand the expansion force of the battery cell.

[0087] In some embodiments, the first heat exchange component is arranged on the bottom wall of the box body, and the end of the second mating surface facing the first heat exchange component is arranged flush with the end of the battery cell facing the corresponding first heat exchange component, or, the end of the second mating surface facing the first heat exchange component is arranged adjacent to the first heat exchange component compared to the end of the battery cell facing the corresponding first heat exchange component.

[0088] In the above technical solution, by arranging one end of the second mating surface facing the first heat exchange component to be flush with one end of the battery cell facing the corresponding first heat exchange component, or, the end of the second mating surface facing the first heat exchange component is arranged adjacent to the first heat exchange component compared to the end of the battery cell facing the corresponding first heat exchange component, it is convenient to support the entire surface of the battery cell facing the expansion beam, so as to improve the uniformity of the force applied to the battery cell when it expands and deforms, and improve the problems of lithium deposition, liquid leakage, etc. caused by uneven force, thereby improving the reliability of battery use.

[0089] In some embodiments, the battery includes a first heat exchange component and a fixed beam, the fixed beam is configured as a first expansion beam and is disposed in a box body, and the first heat exchange component is spaced apart from the fixed beam so that the first heat exchange component and the fixed beam are thermally insulated.

[0090] In the above technical solution, the first heat exchange component is spaced apart from the fixed beam so as to be thermally insulated from the fixed beam, thereby reducing the amount of heat exchange between the first heat exchange component and the fixed beam and reducing the amount of heat or cold transferred from the first heat exchange component to the fixed beam. This is beneficial to increasing the proportion of heat or cold transferred from the first heat exchange component to the battery cell, and is beneficial to improving the thermal management performance of the battery.

[0091] In some embodiments, the fixed beam divides the internal space of the box into a first cavity and a second cavity, a portion of the first heat exchange assembly and the battery cell are both arranged in the first cavity, at least one avoidance channel is formed between the fixed beam and the box, and all ends at the folded position are passed through the corresponding avoidance channel so that the ends extend from the first cavity to the second cavity, and the wall of the fixed beam corresponding to the avoidance channel is spaced apart from the first heat exchange assembly.

[0092] In the above technical solution, at least one avoidance channel is formed between the fixed beam and the box body, and all the ends of the folded position are passed through the corresponding avoidance channel so that the ends extend from the first cavity to the second cavity, which facilitates the assembly of all the ends of the folded position with the fixed beam, and facilitates that all the ends of the folded position extend to the second cavity without bending around the fixed beam, which is beneficial to simplifying the structure of all the ends of the folded position; at the same time, the setting of the above avoidance channel can make the interface of the end located in the second cavity, that is, the interface of the end and the battery cell are located in different cavities respectively, which is beneficial for the box body to provide suitable layout space for the interface of the end to be connected with other components, and facilitates the connection setting of the end with other components. At the same time, the fixed beam can separate the interface position of the end from the battery cell, which is beneficial to reduce the impact of heat exchange medium leakage at the interface position of the end on the battery cell, and facilitates improving the reliability of the battery cell; and the wall surface of the fixed beam corresponding to the avoidance channel is spaced apart from the first heat exchange component, even if the heat insulation setting of the first heat exchange component and the fixed beam is realized.

[0093] In some embodiments, a second recess is formed on the wall of the box body, and the second recess constructs at least a portion of the avoidance channel. The portion of the first heat exchange component that passes through the avoidance channel is arranged in the second recess, and the expansion beam is in contact with the portion of the wall of the box body except the second recess; or, the expansion beam is spaced apart from the portion of the wall of the box body except the second recess.

[0094] In the above technical solution, the fixed beam is fitted with the wall of the box body except the second recess. For the fixed beam and the above-mentioned wall of the box body, the fixed beam is separated from the wall of the box body at the position where the first heat exchange component is passed through, that is, the fixed beam is separated from the second recess, so as to achieve thermal insulation between the fixed beam and the first heat exchange component while avoiding the first heat exchange component. At the position where the first heat exchange component is not passed through, the fixed beam is fitted with the wall of the box body, that is, the fixed beam and the wall of the box body are zero-fit, which is convenient for improving the matching area between the fixed beam and the box body, and is beneficial for improving the installation reliability of the fixed beam. By setting the fixed beam and the wall of the box body except the second recess as a spacing, it is beneficial for further increasing the spacing between the entire fixed beam and the first heat exchange component, which is convenient for improving the thermal resistance between the entire fixed beam and the first heat exchange component, reducing the heat or cold transferred from the first heat exchange component to the fixed beam, and is convenient for improving the energy utilization rate of the first heat exchange component.

[0095] In some embodiments, the battery further includes: a heat insulating member, the heat insulating member including a first heat insulating portion, and the first heat insulating portion is provided between a wall surface of the fixed beam corresponding to the avoidance channel and the first heat exchange assembly.

[0096] In the above technical solution, by setting the first insulation part between the wall of the fixed beam corresponding to the avoidance channel and the first heat exchange component, the first insulation part corresponds to the second recess, so that the thermal resistance between the fixed beam and the first heat exchange component is further increased through the insulation part.

[0097] In some embodiments, the thermal insulation member further includes a second thermal insulation portion, which is provided between a portion of the wall of the box body excluding the second recess and the fixing beam.

[0098] In the above scheme, by arranging the second insulation part between the part of the wall of the box body except the second recess and the fixed beam, it is convenient to clamp the insulation part between the box body and the fixed beam, and to realize the reliable installation of the insulation part by fixing the fixed beam and the box body, so that the insulation part can provide a relatively flat mating surface for the connection between the box body and the fixed beam, and at the same time it is beneficial to reduce the depth of the second recess and improve the molding convenience of the second recess.

[0099] In some embodiments, a first fixing member is further provided on the fixing beam, at least part of which is located inside the fixing beam. The battery also includes a second fixing member, which passes through the box body, the second insulation part and the fixing beam and is connected to the first fixing member.

[0100] In the above technical solution, by arranging at least a portion of the first fixing member within the fixed beam, and by allowing the second fixing member to pass through the box, the second heat insulation portion, and the fixed beam and be connected to the first fixing member, the box, the heat insulation member, and the fixed beam are fixed in a simple manner, while also achieving reliable installation of the heat insulation member. Furthermore, the second fixing member can be installed along the direction of the heat insulation member toward the fixed beam, facilitating sufficient operating space during assembly of the second fixing member and improving assembly convenience. Furthermore, the second fixing member is provided through the second heat insulation portion, facilitating separation of the second fixing member from the heat exchange tube, so that the installation of the second fixing member will not affect the heat exchange tube.

[0101] In some embodiments, the box body includes a first box body, which is an integral stamped part and includes a bottom wall and a surrounding wall, the surrounding wall is arranged around the bottom wall, and a first heat exchange component is provided between at least one of the bottom wall and the surrounding wall and the battery cell.

[0102] In the above technical solution, by setting the first box body including the bottom wall and the surrounding wall as an integral stamped part, the molding of the first box body is facilitated, which is beneficial to reducing the cost of the first box body and making the first box body have good structural strength; at the same time, the structure of the first box body itself realizes the sealing between the bottom wall and the surrounding wall, which is beneficial to improving the sealing of the bottom of the first box body, thereby saving multiple connecting parts (such as bolts) in the box body for realizing the sealing of the bottom of the first box body, saving the connection process of the bottom wall and the surrounding wall, and helping to improve the assembly efficiency of the box body.

[0103] In a third aspect, an embodiment of the present application provides an electrical device comprising the above-mentioned battery.

[0104] In the above technical solution, by adopting the above battery, the battery has good assembly efficiency, which is conducive to improving the production efficiency of electrical devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0105] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0106] FIG1 is a schematic structural diagram of a vehicle provided in some embodiments of the present application;

[0107] FIG2 is an exploded view of the structure of a battery provided in some embodiments of the present application;

[0108] FIG3 is a schematic diagram of a heat exchange assembly provided in some embodiments of the present application;

[0109] FIG4 is a schematic diagram of the cooperation between the heat exchange assembly shown in FIG3 and a plurality of battery cells;

[0110] FIG5 is a schematic diagram of a heat exchange assembly provided in some other embodiments of the present application;

[0111] FIG6 is a schematic diagram of a heat exchange assembly provided in some further embodiments of the present application;

[0112] FIG7 is a schematic diagram of a heat exchange assembly provided in some other embodiments of the present application;

[0113] FIG8 is a partial schematic diagram of a battery provided in some embodiments of the present application;

[0114] FIG9 is a schematic diagram of a third heat exchange assembly and a battery cell provided in some embodiments of the present application;

[0115] FIG10 is a partial schematic diagram of a battery provided in some embodiments of the present application;

[0116] FIG11 is a schematic diagram of the assembly process of the first heat exchange assembly along the sectional view of line AA in FIG10 ;

[0117] FIG12 is a partial enlarged view of the assembly process of the first heat exchange component in FIG11;

[0118] FIG13 is a cross-sectional view along line BB in FIG10;

[0119] FIG14 is a cross-sectional view taken along line CC in FIG10;

[0120] FIG15 is a cross-sectional view along line DD in FIG10;

[0121] FIG16 is a partial cross-sectional view of a box provided in some embodiments of the present application;

[0122] FIG17 is a partial schematic diagram of a battery provided in some embodiments of the present application;

[0123] FIG18 is a front view of the carrier shown in FIG17;

[0124] FIG19 is a top view of the carrier shown in FIG18;

[0125] FIG20 is a cross-sectional view along line EE in FIG18;

[0126] FIG21 is a side view of the carrier shown in FIG18;

[0127] FIG22 is a partial schematic diagram of a battery provided in some embodiments of the present application;

[0128] FIG23 is an exploded view of the battery shown in FIG22 ;

[0129] FIG24 is a cross-sectional view of the battery shown in FIG22;

[0130] FIG25 is an enlarged view of the circled portion F in FIG24 ;

[0131] FIG26 is a partial schematic diagram of a battery provided in some embodiments of the present application;

[0132] FIG27 is a cross-sectional view taken along line GG in FIG26;

[0133] FIG28 is an enlarged view of the circled portion H in FIG27 ;

[0134] FIG. 29 is another schematic diagram of the battery shown in FIG. 26 .

[0135] Reference numerals:

[0136] Electrical device 1000, controller 300, motor 400, battery 200, avoidance channel 200a, first side 200b, second side 200c, card hole 200d, battery cell 100, box 101, first cavity 101a, second cavity 101b, second recess 101c, third recess 101d, first box 1011, bottom wall 1011a, surrounding wall 1011b, stop step 1011c, first mounting hole 1011d, second box 1012, first heat exchange component 102, second heat exchange component 103, third heat exchange Component 104, fixed beam 105, first expansion beam B1, second expansion beam B2, third expansion beam B3, third mounting hole 1050a, first recess 105a, first mating surface 105b, bearing member 106, second mating surface 106a, slot 106b, stopper 106c, plate portion 1061, mating portion 1062, first surface 1062a, second surface 1062b, hook portion 1063, support portion 1064, thermal insulation member 107, first thermal insulation portion 1071, second thermal insulation portion 1072, second mounting hole 1072a, First fixing member 1081, second fixing member 1082, gasket 1083, bottom guard plate 113, heat exchange assembly 110, center line L, retracted position R, first retracted position R1, second retracted position R2, heat exchange tube 1, first heat exchange tube 1a, second heat exchange tube 1b, third heat exchange tube 1c, end 11, first end 11a, second end 11b, connecting section 12, U-shaped area 120, first heat exchange section 121, first heat exchange portion 1211, first bending portion 1212, second heat exchange section 122, second heat exchange portion 1221, third heat exchange Part 1222, the fourth heat exchange part 1223, the fifth heat exchange part 1224, the third heat exchange section 123, the seventh heat exchange part 1231, the eighth heat exchange part 1232, the ninth heat exchange part 1233, the fourth heat exchange section 124, the tenth heat exchange part 1241, the eleventh heat exchange part 1242, the twelfth heat exchange part 1243, the fifth heat exchange section 125, the sixth heat exchange part 1251, the second bending part 1252, the sixth heat exchange section 126, the seventh heat exchange section 127, the thirteenth heat exchange part 1271, the third bending part 1272, the eighth heat exchange section 128, and the collector 2. DETAILED DESCRIPTION

[0137] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0138] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first" and "second" in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary-secondary relationship.

[0139] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments.

[0140] The term "and / or" in this application simply describes an association between related objects, indicating that three possible relationships exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally indicates that the related objects are in an "or" relationship.

[0141] In the embodiments of this application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components in different embodiments are omitted. It should be understood that the thickness, length, width, and other dimensions of the various components in the embodiments of this application, as well as the overall thickness, length, width, and other dimensions of the integrated device shown in the drawings are merely illustrative and should not constitute any limitation on this application.

[0142] The term "plurality" used in this application refers to two or more (including two).

[0143] In this application, battery cells may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, etc., and the embodiments of this application do not limit this. Battery cells may be cylindrical, flat, rectangular, or other shapes, etc., and the embodiments of this application do not limit this. Battery cells are generally divided into three types based on the packaging method: cylindrical battery cells, prismatic battery cells, and soft-pack battery cells, and the embodiments of this application do not limit this.

[0144] The battery referred to in the embodiments of this application refers to a single physical module that includes multiple battery cells to provide higher voltage and capacity. For example, the battery referred to in this application may be a battery module or battery pack. A battery module generally includes multiple battery cells. A battery generally includes a casing for enclosing multiple battery cells or multiple battery modules. The casing prevents liquids or other foreign matter from affecting the charging or discharging of the battery cells. Of course, the battery may also not include a casing.

[0145] For example, a battery cell typically includes a housing, a cell assembly, and an electrolyte. The housing is used to house the cell assembly and electrolyte, and is provided with at least one positive electrode post and at least one negative electrode post. The cell assembly includes one or more electrode assemblies, which are formed by stacking or winding positive and negative electrode sheets and separators.

[0146] The positive electrode sheet generally includes a positive electrode current collector and a positive electrode active material layer. The positive electrode active material layer is directly or indirectly coated on the positive electrode current collector. The positive electrode current collector not coated with the positive electrode active material layer protrudes from the positive electrode current collector coated with the positive electrode active material layer. The positive electrode current collector not coated with the positive electrode active material layer serves as a positive electrode tab. Multiple positive electrode tabs are stacked together and electrically connected to the positive electrode column. For example, the stacked multiple positive electrode tabs can be directly welded to the positive electrode column to form an electrical connection. Alternatively, the battery cell assembly may further include a positive electrode adapter. The stacked multiple positive electrode tabs are welded to one end of the positive electrode adapter, and the other end of the positive electrode adapter is welded to the positive electrode column to form an electrical connection between the positive electrode tab and the positive electrode column.

[0147] The negative electrode sheet can generally include a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer is directly or indirectly coated on the negative electrode current collector. The negative electrode current collector not coated with the negative electrode active material layer protrudes from the negative electrode current collector coated with the negative electrode active material layer. The negative electrode current collector not coated with the negative electrode active material layer serves as a negative electrode tab. Multiple negative electrode tabs are stacked together and electrically connected to the negative electrode column. For example, the multiple stacked negative electrode tabs can be directly welded to the negative electrode column to form an electrical connection; alternatively, the battery cell assembly can further include a negative electrode adapter. The multiple stacked negative electrode tabs are welded to one end of the negative electrode adapter, and the other end of the negative electrode adapter is welded to the negative electrode column to form an electrical connection between the negative electrode tab and the negative electrode column. The material of the separator is not limited, and can be, for example, polypropylene or polyethylene.

[0148] In recent years, new energy vehicles have experienced rapid development. In the electric vehicle sector, batteries, as the power source of electric vehicles, play an irreplaceable and important role. As core components of new energy vehicles, batteries have high requirements in terms of both energy density and assembly efficiency.

[0149] In the related art, batteries use heat exchange components to achieve temperature control of battery cells. However, during the assembly process, the alignment of the heat exchange components with other components is relatively troublesome, which affects the assembly efficiency.

[0150] Based on the above considerations, in order to improve assembly efficiency, a heat exchange assembly is proposed. The heat exchange assembly is used for heat exchange with battery cells and includes multiple heat exchange tubes. Each heat exchange tube has two ends, and when one of the two ends is used for liquid inlet, the other is used for liquid outlet; at least one side of the circumference of the heat exchange assembly is partially formed into a retracted position, and at least one end of each heat exchange tube extends to the retracted position.

[0151] In the above technical solution, a folding position is formed locally on at least one side of the circumference of the heat exchange component, and at least one end of each heat exchange tube extends to the folding position, so that the folding position corresponds to multiple ends, and the multiple ends corresponding to the folding position are relatively concentratedly arranged, so that during the assembly process of the heat exchange component, the multiple ends corresponding to the folding position can be quickly and simultaneously aligned with other components (such as the collector, fixed beam, and expansion beam described later), which is conducive to improving the assembly convenience and assembly efficiency of the heat exchange component while achieving good assembly accuracy for each end. In addition, if it is necessary to seal the entire heat exchange component, the sealing at the multiple ends can be directly achieved at the folding position, which is conducive to simplifying the sealing of the heat exchange component; when other components are provided with avoidance structures for avoiding the folding position, the above setting is also conducive to reducing the number of avoidance structures. At the same time, if the avoidance structure will cause a certain weakening of the structural strength of other components, the above setting is conducive to reducing the weakening effect of the avoidance structure on other components.

[0152] The embodiments of the present application provide an electric device using the battery disclosed herein as a power source. The electric device may be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery-powered vehicle, an electric car, a ship, a spacecraft, etc. Among them, the electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc. The spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc. The electric tool includes a metal cutting power tool, a grinding power tool, an assembly power tool, and a railway power tool, such as an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an impact drill, a concrete vibrator, and an electric planer, etc.

[0153] For the convenience of explanation, the following embodiments take the electric device as a vehicle as an example to introduce the structure of the electric device and the battery of the present application in detail.

[0154] Please refer to Figure 1, which is a schematic structural diagram of a vehicle in which the power-consuming device 1000 provided in some embodiments of the present application is a vehicle. The vehicle can be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. The vehicle is provided with a battery 200, and the battery 200 can be arranged at the bottom, head or tail of the vehicle. The battery 200 can be used to power the vehicle, for example, the battery 200 can be used as an operating power source for the vehicle. The vehicle may also include a controller 300 and a motor 400, and the controller 300 is used to control the battery 200 to power the motor 400, for example, for the starting, navigation and working power requirements of the vehicle during driving. In some embodiments of the present application, the battery 200 can not only serve as the operating power source of the vehicle, but also as the driving power source of the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0155] Please refer to Figure 2, which is an exploded view of the structure of the battery cell 100 provided in some embodiments of the present application for the battery 200. The battery 200 includes a housing 101 and a plurality of battery cells 100, and the battery cells 100 are accommodated in the housing 101. Among them, the housing 101 is used to provide an assembly space for the battery cells 100, and the housing 101 can adopt a variety of structures. In some embodiments, the housing 101 may include a first housing 1011 and a second housing 1012, and the first housing 1011 and the second housing 1012 cover each other, and the first housing 1011 and the second housing 1012 jointly define a housing cavity for accommodating the battery cells 100. The second box body 1012 can be a hollow structure with one end open, and the first box body 1011 can be a plate-like structure, with the first box body 1011 covering the open side of the second box body 1012, so that the first box body 1011 and the second box body 1012 jointly define a receiving cavity; alternatively, the first box body 1011 and the second box body 1012 can both be hollow structures with one end open (for example, as shown in FIG. 2 ), with the open side of the first box body 1011 covering the open side of the second box body 1012. Of course, the box body 101 formed by the first box body 1011 and the second box body 1012 can have various shapes, such as a cylinder or a rectangular parallelepiped.

[0156] In the battery 200, multiple battery cells 100 can be connected in series, in parallel, or in a hybrid connection. A hybrid connection refers to a combination of series and parallel connections among the multiple battery cells 100. Multiple battery cells 100 can be directly connected in series, in parallel, or in a hybrid connection, and then the entire battery cell 100 can be housed within the housing 101. Alternatively, the battery 200 can be constructed by first connecting multiple battery cells 100 in series, in parallel, or in a hybrid connection to form a battery module. The multiple battery modules are then connected in series, in parallel, or in a hybrid connection to form a single unit, which is then housed within the housing 101. The battery 200 may also include other structures. For example, the battery 200 may also include a busbar to electrically connect the multiple battery cells 100.

[0157] 3 and 22 , any two of the first direction X1 , the second direction X2 , and the fifth direction X5 intersect, and further, any two of the first direction X1 , the second direction X2 , and the fifth direction X5 are perpendicular to each other.

[0158] Please refer to Figures 3 to 7. In an embodiment of the present application, the heat exchange component 110 is used to exchange heat with the battery cell 100 to adjust the temperature of the battery cell 100 and facilitate thermal management of the battery cell 100; the heat exchange component 110 includes a plurality of heat exchange tubes 1, each heat exchange tube 1 has two ends 11, and when one of the two ends 11 is used for liquid inlet, the other is used for liquid outlet.

[0159] The heat exchange assembly 110 may be configured to cool the battery cell 100 only, or to heat the battery cell 100 only, or to cool the battery cell 100 as well as to heat the battery cell 100 .

[0160] For example, the two ends 11 of the heat exchange tube 1 are respectively a first end 11a and a second end 11b. When the first end 11a is used for liquid inlet, the second end 11b is used for liquid outlet, or when the second end 11b is used for liquid inlet, the first end 11a is used for liquid outlet. It is understood that in the embodiments of the present application, the heat exchange assembly 110 is configured such that: one of the two ends 11 of at least one heat exchange tube 1 is always used for liquid inlet, and the other is always used for liquid outlet; and / or each end 11 of at least one heat exchange tube 1 can switch between liquid inlet and liquid outlet.

[0161] As shown in FIG3 , a portion of at least one side of the circumference of the heat exchange assembly 110 forms a stowed position R. This term "stowed position" is defined as the dimension occupied by the stowed position R on the corresponding side of the heat exchange assembly 110 being smaller than the dimension of the corresponding side of the heat exchange assembly 110. For example, in FIG3 , the dimension L1 occupied by the stowed position R on the corresponding side of the heat exchange assembly 110 along the X1 direction is smaller than the dimension L3 occupied by the heat exchange assembly 110 along the X1 direction. At the same time, at least one end 11 of each heat exchange tube 1 extends to the stowed position R. For a single stowed position R, the stowed position R can correspond to at least two ends 11 in the heat exchange assembly 110, with the at least two ends 11 being stowed. All ends 11 corresponding to the stowed position R can belong to the same heat exchange tube 1, or all ends 11 corresponding to the stowed position R can belong to different heat exchange tubes 1, or two of the ends 11 corresponding to the stowed position R can belong to the same heat exchange tube 1 and two can belong to different heat exchange tubes 1.

[0162] It is understood that all ends 11 corresponding to the retracted position R are used for liquid inlet, or all ends 11 corresponding to the retracted position R are used for liquid outlet, or a portion of all ends 11 corresponding to the retracted position R are used for liquid inlet and the rest are used for liquid outlet. For example, the retracted position R corresponds to both ends 11 of at least one heat exchange tube 1 in the heat exchange assembly 110, and / or the retracted position R may correspond to one end 11 of at least two heat exchange tubes 1 in the heat exchange assembly 110.

[0163] As can be seen, for the heat exchange assembly 110, there can be one or more stowed positions R. When there are multiple stowed positions R, the multiple stowed positions R can be located on the same side of the circumference of the heat exchange assembly 110, or on different sides of the circumference of the heat exchange assembly 110. For a single heat exchange tube 1, one of its two ends 11 extends to the stowed position R, and the other extends to a position other than the stowed position R. Alternatively, both ends 11 extend to the stowed positions R separately. In this case, the two ends 11 of the heat exchange tube 1 can extend to the same stowed position R or to different stowed positions R.

[0164] It is understood that the heat exchange assembly 110 may include multiple sides, with a portion of at least one of the multiple sides forming a stowed position R. In this case, the dimension occupied by the stowed position R on the corresponding side of the heat exchange assembly 110 is smaller than the dimension of the corresponding side of the heat exchange assembly 110. In other words, the heat exchange assembly 110 may have multiple circumferential edges, with a portion of at least one circumferential edge forming a stowed position R. That is, the number of circumferential edges corresponding to all stowed positions R of the heat exchange assembly 110 is less than or equal to the number of all circumferential edges of the heat exchange assembly 110. The at least one side of the heat exchange assembly 110 may correspond to one or more stowed positions R.

[0165] For example, as shown in Figure 3, assuming that the circumference of the heat exchange assembly 110 includes four sides, namely the front, rear, left, and right sides, the front side is downstream in the X2 direction, the rear side is upstream in the X2 direction, the left side is upstream in the X1 direction, and the right side is downstream in the X1 direction. A portion of the rear side of the heat exchange assembly 110 forms a stowed position R, and the stowed position R is smaller in the left-right direction than the front side of the heat exchange assembly 110. Of course, in other examples, a portion of at least one of the front, left, and right sides of the heat exchange assembly 110 may also form a stowed position R. Furthermore, in other examples, the circumference of the heat exchange assembly 110 may also include three sides.

[0166] In the above technical solution, a folding position R is formed locally on at least one side of the circumference of the heat exchange component 110, and at least one end 11 of each heat exchange tube 1 extends to the folding position R, so that the folding position R corresponds to multiple ends 11, and the multiple ends 11 corresponding to the folding position R are relatively concentratedly arranged, so that during the assembly process of the heat exchange component 110, the multiple ends 11 corresponding to the folding position R can be quickly and simultaneously aligned with other components (such as the collector 2, fixed beam 150, and first expansion beam B1 described later), which is beneficial for achieving good assembly accuracy for each end 11 while facilitating the improvement of the assembly convenience and efficiency of the heat exchange component 110. In addition, if the entire heat exchange assembly 110 needs to be sealed, sealing at multiple ends 11 can be achieved directly at the retracted position R, which is conducive to simplifying the sealing of the heat exchange assembly 110; when other components are provided with avoidance structures for avoiding the retracted position R, the above setting is also conducive to reducing the number of avoidance structures. At the same time, if the avoidance structure will cause a certain weakening of the structural strength of other components, the above setting is conducive to reducing the weakening effect of the avoidance structure on other components.

[0167] Referring to Figures 3, 5, and 7, in some embodiments, the dimension L1 of the stowed position R on the corresponding side of the heat exchange assembly 110 is less than or equal to 1 / 3 of the dimension L2 of the corresponding side of the heat exchange assembly 110. For example, L1 / L2 can be 1 / 3, 2 / 7, 1 / 4, 2 / 9, 1 / 5, or 1 / 6, etc. It will be understood that when there are multiple stowed positions R, the dimensions L1 of the multiple stowed positions R on the corresponding side of the heat exchange assembly 110 can be equal or different.

[0168] For example, taking the folding position R located on the rear side of the heat exchange component 110 as an example, the dimension L3 of the folding position R in the left-right direction is less than or equal to 1 / 3 of the dimension L4 of the rear side of the heat exchange component 110 in the left-right direction; taking the folding position R located on the left side of the heat exchange component 110 as an example, the dimension L5 of the folding position R in the front-to-back direction is less than or equal to 1 / 3 of the dimension L6 of the left side of the heat exchange component 110 in the front-to-back direction.

[0169] In the above technical solution, by setting the size of the folding position R on the corresponding side of the heat exchange component 110 to be less than or equal to 1 / 3 of the size of the corresponding side of the heat exchange component 110, it is convenient to further realize the concentrated setting of multiple ends 11 at the corresponding folding position R, which is beneficial to further save the occupied space of the folding position R and facilitate the assembly and sealing of the heat exchange component 110 at the folding position R; at the same time, since the end 11 corresponding to the folding position R is used for liquid inlet and / or liquid outlet, the temperature of the medium in the end 11 is relatively high or low, and the setting of the folding position R will cause the temperature of the corresponding area to be concentratedly increased or concentratedly decreased, and the size occupied by the folding position R on the corresponding side of the heat exchange component 110 is small, then since the influence range of the temperature of the medium in the end 11 corresponding to the folding position R will also be correspondingly smaller, it is beneficial to reduce the concentration of temperature in the area corresponding to the folding position R, so as to improve the temperature uniformity of the battery 200 to a certain extent.

[0170] For example, the dimension L1 of the retracted position R on the corresponding side of the heat exchange assembly 110 is less than or equal to 1 / 5 of the dimension L2 of the corresponding side of the heat exchange assembly 110. For example, L1 / L2 can be 2 / 11, 2 / 13, or 1 / 7, etc. This further facilitates the assembly and sealing of the heat exchange assembly 110.

[0171] 3 to 7 , in some embodiments, all the retracted positions R of the heat exchange assembly 110 are located on one side of the circumference of the heat exchange assembly 110 ; in this case, the retracted position R of the heat exchange assembly 110 may be one or more.

[0172] For example, as shown in Figure 3, taking the example that the circumference of the heat exchange component 110 includes four sides, and the four sides of the heat exchange component 110 are respectively the front side, the rear side, the left side and the right side, all the folded positions R of the heat exchange component 110 are located on the front side of the heat exchange component 110. In the process of installing the heat exchange component 110, it is beneficial to simplify the alignment direction of the heat exchange component 110 and other components. The alignment of the front side of the heat exchange component 110 and other components can be focused on, and the alignment requirements of other sides of the heat exchange component 110 can be reduced, thereby further improving the assembly convenience and efficiency of the heat exchange component 110.

[0173] In the above technical solution, by setting all the folding positions R of the heat exchange component 110 to be located on one side of the circumferential side of the heat exchange component 110, the settings of all the folding positions R of the heat exchange component 110 are relatively concentrated, which is convenient for simplifying the alignment of the heat exchange component 110 with other components during the assembly process of the heat exchange component 110, and is conducive to the rapid and simultaneous assembly of all the folding positions R, so as to further improve the assembly efficiency of the heat exchange component 11.

[0174] Of course, in other embodiments of the present application, the heat exchange component 110 has multiple folding positions R, and at least two of the multiple folding positions R are respectively located on different sides of the circumference of the heat exchange component 110; for example, taking the circumference of the heat exchange component 110 as an example, the circumference includes four sides, and the four sides of the heat exchange component 110 are respectively the front side, the rear side, the left side and the right side, at least two of the above four sides are respectively provided with a folding position R.

[0175] Please refer to FIG. 3 to FIG. 7 . In some embodiments, a plurality of heat exchange tubes 1 are arranged at intervals or arranged around each other.

[0176] For example, when multiple heat exchange tubes 1 are arranged in an intermittent manner, the multiple heat exchange tubes 1 can be arranged in an intermittent manner along a first predetermined direction (as shown in Figures 3 and 4), or the multiple heat exchange tubes 1 can be arranged in an intermittent manner along a first predetermined direction and a second predetermined direction (for example, the multiple heat exchange tubes 1 are arranged generally in multiple rows and columns), with the second predetermined direction intersecting the first predetermined direction, but not limited thereto; the first predetermined direction can be the first direction described below. When the multiple heat exchange tubes 1 are arranged in an intertwined manner, at least a portion of at least one of the multiple heat exchange tubes 1 extends circumferentially around at least a portion of at least one of the other heat exchange tubes 1 (as shown in Figures 5-7).

[0177] In the above technical solution, by arranging multiple heat exchange tubes 1 at intervals or arranging them around each other, it is beneficial to make full use of the layout space of the multiple heat exchange tubes 1, so that when the heat exchange assembly 110 is used for the battery 200, each electromagnetic cell 100 can correspond to the appropriate part of the heat exchange tube 1, so as to better meet the heat exchange requirements of each battery cell 100.

[0178] Of course, in other embodiments of the present application, the heat exchange component 110 has multiple folding positions R, and at least two of the multiple folding positions R are located on different sides of the circumference of the heat exchange component 110, the arrangement of the multiple heat exchange tubes 1 can also be arranged in an intermittent manner or arranged around each other.

[0179] Referring to Figures 3, 5, and 7, in some embodiments, the spacing c1 between any two adjacent ends 11 at the retracted position R is less than the maximum radial dimension c3 of the cross-sectional outer contour of the end 11. The cross-sectional area of ​​the end 11 is perpendicular to the central axis of the end 11, which extends along the direction of fluid flow within the end 11. The cross-sectional outer contour of the end 11 can be understood to correspond to the outer peripheral wall of the end 11. In the cross-sectional area of ​​the end 11, the maximum dimension c3 of the cross-sectional outer contour of the end 11 along the direction passing through the central axis of the end 11 (i.e., radially) is the cross-sectional area of ​​the end 11.

[0180] For example, as shown in Figures 7 and 8 , the heat exchange tube 1 is configured as a flat tube or harmonica tube, the width of the end portion 11 is equal to the maximum radial dimension c3 of the outer cross-sectional profile of the end portion 11, and the thickness c4 of the end portion 11 is less than c3. Of course, in other examples, the heat exchange tube 1 is a round tube, in which case the outer diameter of the end portion 11 is equal to the maximum radial dimension c3 of the outer cross-sectional profile of the end portion 11.

[0181] Among them, there is one folding position R, and the two ends 11 of each heat exchange tube 1 extend to the same folding position R. At this time, the two ends 11 of all heat exchange tubes 1 extend to the folding position R; it can be seen that the number of folding positions R is small, which is conducive to further improving the assembly efficiency and sealing convenience of the heat exchange component 110. Alternatively, there are multiple retracted positions R, and both ends 11 of the heat exchange tube 1 extend to the same retracted position R. That is, for a single heat exchange tube 1, its two ends 11 correspond to the same retracted position R, and for different heat exchange tubes 1, different heat exchange tubes 1 may correspond to the same retracted position R, and / or different heat exchange tubes 1 correspond to different retracted positions R. In this case, the multiple retracted positions R may be located on one side of the circumference of the heat exchange component 110, or at least two of the multiple retracted positions R are located on different sides of the circumference of the heat exchange component 110. For example, taking two heat exchange tubes 1 and two retracted positions R as an example, both ends 11 of one heat exchange tube 1 extend to one of the retracted positions R, and both ends 11 of the other heat exchange tube 1 extend to the other retracted position R. For another example, taking three heat exchange tubes 1 and two retracted positions R as an example, both ends 11 of one heat exchange tube 1 extend to one of the retracted positions R, and all ends 11 of the other two heat exchange tubes 1 extend to the other retracted position R.

[0182] In other embodiments, the distance c1 between any two adjacent end portions 11 at the retracted position R may also be greater than or equal to the maximum radial dimension c3 of the outer contour of the cross section of the end portion 11 .

[0183] Please refer to Figures 5 to 7. In some embodiments, there are multiple retracted positions R, and the two ends 11 of each heat exchange tube 1 extend to different retracted positions R respectively. At this time, the multiple retracted positions R can all be located on one side of the circumference of the heat exchange component 110, or at least two of the multiple retracted positions R are located on different sides of the circumference of the heat exchange component 110.

[0184] In the above technical solution, by setting the two ends 11 of the heat exchange tube 1 to extend to the same retraction position R, or the two ends 11 of each heat exchange tube 1 to extend to different retraction positions R respectively, the number of heat exchange tubes 1 and the number of retraction positions R are relatively flexible, which facilitates the flexible design of the heat exchange component 100.

[0185] It can be understood that when there are multiple retracted positions R and the two ends 11 of the heat exchange tube 1 extend to the same retracted position R, the number of heat exchange tubes 1 and the number of retracted positions R can be equal or different; similarly, when the two ends 11 of each heat exchange tube 1 extend to different retracted positions R respectively, the number of heat exchange tubes 1 and the number of retracted positions R can be equal or different.

[0186] Please refer to FIG. 3 to FIG. 7 . In some embodiments, for a single retracted position R, the retracted position R is located between corresponding ends of the heat exchange assembly 110 .

[0187] For example, taking the stowed position R located at the front side of the heat exchange assembly 110 as an example, the stowed position R is located between the left and right ends of the heat exchange assembly 110. That is, in the left-right direction, the stowed position R does not extend beyond the left and right edges of the heat exchange assembly 110. In other words, with the projection direction from back to front, the orthographic projection of the stowed position R does not extend beyond the left and right edges of the orthographic projection of the heat exchange assembly 110. Of course, for the stowed position R located on the left side of the heat exchange assembly 110, the stowed position R is located between the front and rear ends of the heat exchange assembly 110.

[0188] In other embodiments, for a single retracted position R, at least a portion of the retracted position R is disposed beyond a corresponding end of the heat exchange assembly 110 .

[0189] For example, taking the stowed position R located at the front side of the heat exchange assembly 110 as an example, at least a portion of the stowed position R extends beyond the left or right end of the heat exchange assembly 110. With the projection direction from back to front, at least a portion of the orthographic projection of the stowed position R is located to the left of the left edge of the orthographic projection of the heat exchange assembly 110, or at least a portion of the orthographic projection of the stowed position R is located to the right of the right edge of the orthographic projection of the heat exchange assembly 110. Of course, for the stowed position R located on the left side of the heat exchange assembly 110, at least a portion of the stowed position R extends beyond the front or rear end of the heat exchange assembly 110.

[0190] In the above technical solution, by setting the folding position R between the corresponding two ends of the heat exchange component 110, or at least partially exceeding the corresponding end of the heat exchange component 110, it is convenient to flexibly set the position of the folding position R on the corresponding side of the heat exchange component 110, which is beneficial to match the folding position R with the arrangement of multiple heat exchange tubes 1, etc., and is beneficial to improving the arrangement convenience of multiple heat exchange tubes 1.

[0191] Referring to Figures 3 and 4 , in some embodiments, there is a single retracted position R, which is positioned relative to the middle of the corresponding side of the heat exchange assembly 110. In this case, both ends 11 of all heat exchange tubes 1 are retracted toward the middle of the corresponding side of the heat exchange assembly 110. In other embodiments, there is a single retracted position R, which is positioned relative to one end of the corresponding side of the heat exchange assembly 110. In this case, both ends 11 of all heat exchange tubes 1 are retracted toward the one end of the corresponding side of the heat exchange assembly 110, such that the retracted position R deviates from the middle of the heat exchange assembly 110.

[0192] For example, taking the folding position R located on the front side of the heat exchange component 110 as an example, the folding position R is arranged relative to the front and back of the middle part of the heat exchange component 110 in the left and right directions, or the folding position R is arranged relative to the left end or right end of the heat exchange component 110.

[0193] In the above technical solution, by setting the retraction position R opposite to the middle of the corresponding side of the heat exchange component 110, or opposite to the end of the corresponding side of the heat exchange component 110, so as to realize the retraction arrangement of all ends 11 of the heat exchange component 110, the retraction position R of a suitable position is reasonably selected according to the arrangement method of the heat exchange tube 1, so that all ends 11 can be smoothly extended to the retraction position R.

[0194] Referring to FIG3 , in some embodiments, a plurality of heat exchange tubes 1 are arranged at intervals along a first direction X1, and the two heat exchange tubes 1 at both ends are arranged symmetrically about a center line L perpendicular to the first direction of the heat exchange assembly 110. For example, the center line L may extend along the second direction, but is not limited thereto. For example, the center line L may also extend along a fifth direction X5.

[0195] In the above technical solution, by arranging multiple heat exchange tubes 1 at intervals, it is convenient to simplify the arrangement of the multiple heat exchange tubes 1, and the two heat exchange tubes 1 at both ends are arranged symmetrically about the center line L, so that when other conditions are the same, the two heat exchange tubes 1 at both ends can achieve basically the same temperature regulation capability. When the heat exchange component 110 is used for the battery 200, it is convenient for the heat exchange component 110 to achieve basically the same temperature control for the outer battery cells 100, which is beneficial to reduce the temperature difference of multiple battery cells 100 and improve the reliability of the battery 200.

[0196] Please refer to Figures 3 and 4. The two ends 11 of the heat exchange tube 1 are respectively a first end 11a and a second end 11b. One of the first end 11a and the second end 11b is used for liquid inlet and the other is used for liquid outlet. All the second ends 11b of two adjacent heat exchange tubes 1 spaced apart along the first direction X1 are located between the two first ends 11a of the two adjacent heat exchange tubes 1, and all the first ends 11a and all the second ends 11b of the two adjacent heat exchange tubes 1 extend to the same retracted position R.

[0197] It can be seen that for two adjacent heat exchange tubes 1 spaced apart along the first direction, all their ends 11 a correspond to the same retracted position R, and all their second ends 11 b are located between the two first ends 11 a. When the first end 11a is used for liquid inlet, it is convenient for the medium in the upstream section of the heat exchange tube 1 to be used for heat exchange with the peripheral battery cells 100, while the medium in the downstream section of the heat exchange tube 1 is used for heat exchange with the internal battery cells 100. This is particularly suitable for the situation where the heat exchange tube 1 is used to heat the battery cells 100. The peripheral battery cells 100 are close to the use environment and the temperature is relatively low. The heat exchange tube 1 uses a medium with a higher temperature to preferentially heat the peripheral battery cells 100, and then the above medium exchanges heat with the peripheral battery cells 100 before exchanging heat with the internal battery cells 100, so as to improve the temperature uniformity of the battery 200; at this time, the embodiment of the present application arranges all the second end portions 11b of the two adjacent heat exchange tubes 1 between the two first end portions 11a, and makes all the first end portions 11a and the second end portions 11b extend to the same retracted position, so as to simplify the connection between the liquid supply flow path and the liquid outlet flow path and the two adjacent heat exchange tubes 1 respectively, and at the same time is conducive to shortening the length of the liquid supply flow path and the liquid outlet flow path and reducing the flow resistance. Of course, the first end portion 11a can also be used for discharging liquid, which will not be described in detail here.

[0198] In the above technical solution, by arranging that all the second end portions 11b of two adjacent heat exchange tubes 1 spaced apart along the first direction are located between the two first end portions 11a of the two adjacent heat exchange tubes 1, and all the first end portions 11a and all the second end portions 11a of the two adjacent heat exchange tubes 1 extend to the same retracted position R, it is beneficial to simplify the connection between the two adjacent heat exchange tubes 1 and the liquid supply flow path and the liquid outlet flow path, and at the same time it is beneficial to shorten the length of the liquid supply flow path and the liquid outlet flow path.

[0199] 5 and 7 , in some embodiments, there are multiple retracted positions R, which are spaced apart, and a spacing c1 between two adjacent ends 11 of a retracted position R is smaller than a spacing c2 between two adjacent retracted positions R. The two adjacent ends 11 of the retracted position R may belong to the same heat exchange tube 1 or to different heat exchange tubes 1 .

[0200] In the above technical solution, by setting the distance between two adjacent ends 11 of the stowed position R smaller than the distance between two adjacent stowed positions R, the distance between two adjacent stowed positions R can be made relatively large. When other components are provided with avoidance structures for avoiding the stowed positions R, two adjacent stowed positions R can correspond to different avoidance structures, thereby reducing the space occupied by the avoidance structures and facilitating the arrangement of the avoidance structures. At the same time, if the avoidance structures may weaken the structural strength of other components, the above arrangement is conducive to further reducing the weakening effect of the avoidance structures on other components.

[0201] Please refer to Figures 5 to 7. In some embodiments, the two ends 11 of the heat exchange tube 1 are respectively a first end 11a and a second end 11b. The first end 11a is used for liquid inlet and the second end 11b is used for liquid outlet. The multiple retracted positions R include a first retracted position R1 and a second retracted position R2. Among them, the first end 11a of each heat exchange tube 1 extends to the first retracted position R1, and the second end 11b of each heat exchange tube 1 extends to the second retracted position R2. At this time, the first retracted position R1 corresponds to the liquid inlet end of all heat exchange tubes 1, and the second retracted position R2 corresponds to the liquid outlet end of all heat exchange tubes 1; or, the first end 11a of at least one heat exchange tube 1 and the second end 11b of at least one heat exchange tube 1 both extend to the first retracted position R1, and the second end 11b of at least one heat exchange tube 1 and the first end 11a of at least one heat exchange tube 1 both extend to the second retracted position R2. At this time, the first retracted position R1 corresponds to the liquid inlet end of at least one heat exchange tube 1 and the liquid outlet end of at least one heat exchange tube 1, and the second retracted position R2 also corresponds to the liquid outlet end of at least one heat exchange tube 1 and the liquid inlet end of at least one heat exchange tube 1.

[0202] In the above technical solution, by setting all first end portions 11a to extend to the first retracted position R1 and all second end portions 11b to extend to the second retracted position R2, it is convenient to realize the separate arrangement of all liquid inlet ends and all liquid outlet ends, and it is convenient to connect all heat exchange tubes 1 of the heat exchange assembly 110 to the medium circulation system, and realize the parallel arrangement of multiple heat exchange tubes 1; by setting the first retracted position R1 and the second retracted position R2 to correspond to at least one first end portion 11a and at least one second end portion 11b, it is beneficial to flexibly match the different heat exchange requirements of the battery cell 100.

[0203] Referring to Figures 3-7 , in some embodiments, the heat exchange assembly 110 further includes at least one current collector 2, which corresponds one-to-one to the retracted positions R. Thus, multiple ends 11 located at the same retracted position R share the same current collector 2. The current collector 2 connects to the interfaces of the multiple ends 11 corresponding to the retracted positions R, or the current collector 2 separates the interfaces of the multiple ends 11 corresponding to the retracted positions R into multiple independent flow channels.

[0204] For example, when the multiple ends 11 at the folding position R are all used for liquid inlet or liquid outlet, the current collector 2 is connected to the interfaces of the multiple ends 11 at the folding position R, so that the medium in the current collector 2 is distributed to the multiple ends 11, or the medium flowing out from the multiple ends 11 is gathered in the current collector 2; when at least one of the multiple ends 11 at the folding position R is used for liquid inlet and at least one of the remaining ends is used for liquid outlet, the current collector 2 separates the interfaces of the multiple ends 11 at the folding position R into multiple independent flow channels, at least one flow channel is used to provide medium to the end 11, and at least one of the remaining flow channels is used to collect the medium flowing out from the end 11.

[0205] Take the two ends 11 of the heat exchange tube 1 as an example, which are the first end 11a for liquid inlet and the second end 11b for liquid outlet: there is one retraction position R and one collector 2 respectively, all first ends 11a and all second ends 11b extend to the retraction position R, and the collector 2 can separate the interfaces of multiple ends 11 into liquid inlet channels and liquid outlet channels, all first ends 11a are connected to the liquid inlet channels, and all second ends 11b are connected to the liquid outlet channels; or, there are two retraction positions R and two collectors 2 respectively, all first ends 11a extend to the first retraction position R1, and the collector 2 corresponding to the first retraction position R1 is connected to the interfaces of all first ends 11a, and all second ends 11b extend to the second retraction position R2, and the collector 2 corresponding to the second retraction position R2 is connected to the interfaces of all second ends 11b.

[0206] In the above technical solution, by setting a collector 2, multiple ends 11 located at the same retracted position R share the same collector 2, so as to facilitate improving the overall structural stability and reliability of the heat exchange component 110 while ensuring the normal circulation of the medium in each heat exchange tube 1.

[0207] Of course, in other embodiments of the present application, the heat exchange assembly 110 may not include the current collector 2.

[0208] Please refer to Figures 3-7, 11, and 12. In some embodiments, each heat exchange tube 1 further includes a connecting section 12 connected between the two end portions 11. If the central axes of at least the connecting sections 12 of all heat exchange tubes 1 are located in the same plane, then all heat exchange tubes 1 are arranged in the same plane, and each heat exchange tube 1 is not bent in a direction perpendicular to the above plane. For example, as shown in the figure, the central axes of the connecting sections 12 of all heat exchange tubes 1 are located in the same horizontal plane, while the central axes of the end portions 11 of each heat exchange tube 1 are not located at the intersection of the above horizontal plane (for example, the portions of all end portions 11 located on opposite sides of the fixed beam 105 at the retracted position R described later are connected at an obtuse angle); or, the central axes of all heat exchange tubes 1 are located in the same horizontal plane.

[0209] In the above technical solution, by arranging the central axes of at least the connecting sections 12 of all heat exchange tubes 1 to be located in the same plane, it is convenient to improve the assembly consistency of multiple heat exchange tubes 1, which is beneficial to achieve basically the same thermal resistance between each heat exchange tube 1 and the corresponding battery cell 100, thereby improving the heat exchange balance.

[0210] In the embodiment of the present application, the end portion 11 may extend a certain distance along a straight line, and at least one of the two end portions 11 of the heat exchange tube 1 is bent and connected to the connecting section 12 .

[0211] Please refer to Figure 8. In some embodiments, the heat exchange tube 1 is a flat tube or a harmonica tube. At this time, in the cross section of the heat exchange tube 1, the thickness of the heat exchange tube 1 is smaller than the width of the heat exchange tube 1, and the cross section of the heat exchange tube 1 is perpendicular to the central axis of the heat exchange tube 1.

[0212] In the above technical solution, by setting the heat exchange tube 1 as a flat tube or a harmonica tube, it is beneficial to save the space occupied by the heat exchange tube 1, and at the same time, it is convenient to use the thick side of the heat exchange tube 1 to exchange heat with the battery cell 100, so as to achieve a balance between the volume energy density and thermal management of the battery 200. For example, the heat exchange tube 1 can be extruded, and the thickness of the heat exchange tube 1 can be as small as about 0.7mm. In the related art, a water-cooled plate structure is adopted. The water-cooled plate usually includes two stacked plates, which are welded and fixed to define a flow channel. For this reason, the thickness of the water-cooled plate is usually thick glue, which can reach more than 2.4mm. It can be seen that the above-mentioned setting of the present application can reduce the cost of the heat exchange component 110, while saving the space occupied by the heat exchange component 110, and facilitating the improvement of the energy density of the battery 200 when the heat exchange component 110 is arranged in the box 101.

[0213] In the embodiments of the present application, the harmonica tube can be understood as a flat tube having at least one partitioning structure added thereto to divide the interior of the flat tube into multiple flow channels, with each channel's two ends respectively communicating with the liquid inlet and liquid outlet of the heat exchange tube 1. The multiple flow channels can be spaced apart along the width of the flat tube; alternatively, the multiple flow channels can be arranged in multiple rows and columns along the width and thickness of the flat tube.

[0214] Please refer to Figures 3 to 7. In some embodiments, each heat exchange tube 1 further has a connecting section 12 connected between the two ends 11. At least one heat exchange tube 1 is configured as a first heat exchange tube 1a. The connecting section 12 of the first heat exchange tube 1a includes a first heat exchange section 121 and a second heat exchange section 122. The second heat exchange section 122 is bent to form a U-shaped area 120. The first heat exchange section 121 is bent and arranged in the U-shaped area 120, and the first heat exchange section 121 is bent and connected to the second heat exchange section 122.

[0215] For example, the battery 200 may include multiple battery cells 100 , and the first heat exchange tube 1 a is used to exchange heat with the multiple battery cells 100 of the battery 200 , so that the temperature of the battery 200 can be limited to a reliable operating temperature, thereby achieving reliable operation of the battery 200 .

[0216] The phrase "the second heat exchange section 122 is bent to form a U-shaped region 120, and the first heat exchange section 121 is bent and disposed within the U-shaped region 120" is intended to indicate that the second heat exchange section 122 is disposed circumferentially around the first heat exchange section 121 and can be arranged on at least three circumferential sides of the first heat exchange section 121. The second heat exchange section 122 can be arranged closer to the periphery of the battery 200 relative to the first heat exchange section 121. The dotted lines in Figures 3-7 can be understood to correspond to the U-shaped region 120 of the heat exchange section.

[0217] The second heat exchange section 122 is bent to form a U-shaped area 120, that is, in the direction from one end of the second heat exchange section 122 toward the other end, at least a portion of the second heat exchange section 122 extends along the U-shaped line to form a U-shaped area 120.

[0218] The first heat exchange section 121 is bent and arranged in the U-shaped area 120, that is, the first heat exchange section 121 is arranged in the space enclosed by the second heat exchange section 122, and the first heat exchange section 121 extends along a non-straight line on the inner side of the second heat exchange section 122, and has at least one bending position.

[0219] It should be noted that, in this embodiment, only the first heat exchange section 121 is limited to being bent and disposed within the U-shaped region 120 of the second heat exchange section 122, and the bending form of the first heat exchange section 121 is not limited. That is, the specific bending form of the first heat exchange section 121 can be designed according to the heat exchange requirements of the battery 200. For example, the first heat exchange section 121 can extend along the length direction of the battery cell 100 (i.e., the first direction X1 in FIG. 3 ), and after extending to a certain length, bend toward the width direction of the battery cell 100 (i.e., the second direction X2 in FIG. 3 ), and then continue to extend along the length direction of the battery cell 200 and bend along the width direction. Alternatively, the first heat exchange section 121 can extend along the width direction of the battery cell 100, and after extending to a certain length, bend toward the length direction of the battery cell 100, and then continue to extend along the width direction of the battery cell 100 and bend along the length direction.

[0220] The first heat exchange section 121 and the second heat exchange section 122 are connected in a bent manner, that is, one end of the first heat exchange section 121 is connected to one end of the second heat exchange section 122, and the connection position between the first heat exchange section 121 and the second heat exchange section 122 is a bent non-linear structure. For example, the connection position between the first heat exchange section 121 and the second heat exchange section 122 can be bent into an arc segment.

[0221] For example, one end of the first heat exchange section 121 away from the second heat exchange section 122 can be connected to an end 11, and the other end 11 can be connected to the end of the second heat exchange section 122 away from the first heat exchange section 121. Thus, when the first heat exchange tube 1a is exchanging heat, the heat exchange medium can flow from the first heat exchange section 121 to the second heat exchange section 122, or from the second heat exchange section 122 to the first heat exchange section 121.

[0222] It is understandable that as the heat exchange medium flows through the first heat exchange tube 1a, its temperature gradually changes, resulting in a gradual decrease in the heat exchange efficiency. For example, when the first heat exchange tube 1a cools and dissipates heat from the battery cells 100, the heat from the battery cells 100 is gradually transferred to the heat exchange medium, causing the temperature of the heat exchange medium to gradually increase as it flows through the first heat exchange tube 1a, the temperature difference between the heat exchange medium and the battery cells 100 gradually decreases, and the heat exchange efficiency gradually decreases. When the first heat exchange tube 1a heats and raises the temperature of the battery cells 100, the heat in the heat exchange medium is gradually transferred to the battery cells 100, causing the temperature of the heat exchange medium to gradually decrease as it flows through the first heat exchange tube 1a, the temperature difference between the heat exchange medium and the battery cells 100 gradually decreases, and the heat exchange efficiency gradually decreases.

[0223] In this embodiment, when the first heat exchange tube 1a dissipates heat and cools the multiple battery cells 100, the heat exchange medium can also flow from the first heat exchange section 121 to the second heat exchange section 122, or the heat exchange medium can also flow from the second heat exchange section 122 to the first heat exchange section 121. When the heat exchange medium also flows from the first heat exchange section 121 to the second heat exchange section 122, the battery cells 100 at the middle position (that is, the internal battery cells 100 on the inner side of the periphery) can be cooled first, and then the battery cells 100 at the peripheral position can be cooled. Since the heat dissipation of the battery cells 100 at the peripheral position is better than that of the internal battery cells 100, the heat exchange medium with a lower temperature in the first heat exchange section 121 can better meet the heat dissipation requirements of the battery cells 100 at the middle position. At the same time, since the battery cells 100 at the peripheral position can directly dissipate heat naturally toward the external environment, when the temperature of the heat exchange medium in the second heat exchange section 122 is slightly higher, it can still meet the heat dissipation requirements of the peripheral battery cells 100, so that the cooling effects obtained by the battery cells 100 at the peripheral position and the battery cells 100 at the middle position are roughly the same, and then the temperatures of the battery cells 100 at the peripheral position and the battery cells 100 at the middle position after cooling and heat dissipation are relatively consistent, so that the temperature distribution in the battery 200 is more uniform.

[0224] When the first heat exchange tube 1a heats up multiple battery cells 100, the heat exchange medium can also flow from the first heat exchange section 121 to the second heat exchange section 122, but the heat exchange medium can also flow from the second heat exchange section 122 to the first heat exchange section 121. For example, when the heat exchange medium flows from the second heat exchange section 122 to the first heat exchange section 121, the battery cells 100 at the periphery can be heated first, and then the battery cells 100 at the middle position can be cooled by the heat exchange medium. Since the battery cells 100 at the periphery dissipate more heat to the external environment, the temperature of the battery cells 100 at the periphery of the battery 200 is more likely to drop. The heat exchange medium first heats the battery cells 100 at the periphery of the battery 200. The higher temperature heat exchange medium can increase the temperature of the battery cells 100 at the periphery while compensating for the loss of heat dissipated by the battery cells 100 to the external environment. The heat generated by the battery cell 100 itself can meet its heating needs. The battery cell 100 in the middle position has less contact area with the external environment and less heat loss. The lower temperature heat exchange medium flowing in the first heat exchange section 121 can cooperate with the heat generated by the battery cell 100 itself to well meet its heating needs. As a result, the heating effects obtained by the peripheral battery cells 100 and the battery cells 100 in the middle position of the battery assembly can be basically the same, and the temperatures of the peripheral battery cells 100 and the battery cells 100 in the middle position after heating are relatively consistent, making the temperature distribution in the battery 200 more uniform.

[0225] In the above embodiment, the second heat exchange section 122 is bent to form a U-shaped area 120, and the first heat exchange section 121 is bent and arranged in the U-shaped area 120. When the first heat exchange tube 1a exchanges heat with multiple battery cells 100, the U-shaped area 120 formed by the outer second heat exchange section 122 can be opposite to the outer battery cells 100, and the first heat exchange section 121 in the U-shaped area 120 can be opposite to the internal battery cells 100, so that the first heat exchange tube 1a can compensate for the internal and external temperature difference caused by the heat exchange between the outer battery cells 100 and the environment, so that the heat exchange effect of the outer battery cells 100 and the internal battery cells 100 tend to be consistent, thereby improving the temperature uniformity of the battery 200, thereby improving the service life of the battery 200 to a certain extent.

[0226] For example, the second heat exchange section 122 can be located at the outermost side of the first heat exchange tube 1a in the circumferential direction, that is, the second heat exchange section 122 is formed as the outermost flow channel of the first heat exchange tube 1a. In this way, the second heat exchange section 122 can be used to exchange heat with the battery cells 100 on the periphery, which is beneficial to improve the temperature difference between the peripheral battery cells 100 and the internal battery cells 100 caused by heat exchange with the environment, thereby improving the temperature uniformity of the battery cells 100 on the periphery of the battery 200.

[0227] For example, the first heat exchange section 121 and the second heat exchange section 122 are bent in the same plane, so that the first heat exchange tube 1a can exchange heat for multiple battery cells 100 in the same plane. As a result, the structure of the first heat exchange tube 1a can be simplified, the production difficulty of the first heat exchange tube 1a can be reduced, and the space occupied by the first heat exchange tube 1a can be reduced, thereby improving the volume energy density of the battery 200.

[0228] For example, as shown in FIG4 , multiple heat exchange tubes 1 are arranged at intervals along a first direction. The two heat exchange tubes 1 at both ends of the first direction X1 are both first heat exchange tubes 1a. Furthermore, the two first heat exchange tubes 1a are symmetrically arranged about the centerline L of the heat exchange assembly 110 extending along the second direction X2. It is understood that arranging the second heat exchange section 122 of the first heat exchange tube 1a at the periphery can improve the temperature uniformity inside and outside the battery assembly. Therefore, forming the two heat exchange tubes 1 at both ends of the first direction into first heat exchange tubes 1a can improve the temperature uniformity of the battery cells 100 at both ends of the battery assembly in the first direction, thereby achieving uniform temperature for the entire battery assembly. Thus, by providing two symmetrically arranged first heat exchange tubes 1, liquid can be simultaneously fed into both sides, increasing the liquid flow rate, shortening the length of a single heat exchange channel, and reducing the pressure drop within a single heat exchange channel, thereby improving heat exchange efficiency.

[0229] Furthermore, the medium flow direction and the inlets and outlets of the two heat exchange tubes 1 at both ends of the first direction are arranged symmetrically, so that the two first heat exchange tubes 1a can synchronously exchange heat at both ends of the battery assembly in the first direction, resulting in a better temperature equalization effect.

[0230] Of course, in other embodiments, the plurality of heat exchange tubes 1 may be asymmetrical about the centerline of the heat exchange assembly 110 along the second direction. The asymmetrical arrangement provides the entire heat exchange tube 1 with a foolproof function, which can indicate the progress of the installation of the heat exchange tube 1 and improve installation efficiency.

[0231] Please refer to Figures 3 to 7. In some embodiments, the first heat exchange section 121 includes a first heat exchange part 1211 and a first bending part 1212. There are multiple first heat exchange parts 1211, and the multiple first heat exchange parts 1211 are arranged at intervals along the first direction X1. Each first heat exchange part 1211 extends along the second direction. The first bending part 1212 is bent and connected between two adjacent first heat exchange parts 1211, so that the multiple first heat exchange parts 1211 are connected in sequence, and the second direction is set at an angle to the first direction.

[0232] It should be noted that the shape of the first heat exchange portion 1211 can be diverse. For example, the first heat exchange portion 1211 can be straight or curved. Thus, by sequentially bending and connecting multiple first heat exchange portions 1211, the first heat exchange section 121 can form an S-shaped, X-shaped, or V-shaped heat exchange channel. The shape of the first bend portion 1212 can be an arc or a broken line. The phrase "the first direction and the second direction are arranged at an angle" is intended to indicate that the first and second directions can be arranged perpendicularly or intersectingly, but not perpendicularly. For example, the first direction X1 and the second direction X2 can be arranged at an angle of 30°, 60°, 80°, 120°, 150°, or 170°. For example, as shown in Figure 3, the first direction is the length of the battery cell 100, and the second direction is the thickness of the battery cell 100. Thus, by bending and connecting multiple first heat exchange portions 1211, an S-shaped heat exchange channel can be formed, enabling heat exchange between multiple battery cells 100.

[0233] In the above embodiment, on the one hand, by providing multiple first heat exchange parts 1211, the heat exchange area of ​​the first heat exchange section 121 can be increased, and then the heat exchange area of ​​the first heat exchange tube 1a can be increased, thereby improving the heat exchange effect of the first heat exchange tube 1a; on the other hand, since the internal battery cells 100 are wrapped by the external battery cells 100, the temperature difference between the internal battery cells 100 is not large. Therefore, by providing multiple first heat exchange parts 1211, the overall heat exchange effect can be guaranteed while ensuring that the temperature difference between the internal and external battery cells 100 is small.

[0234] It is understood that the first bend 1212 is arc-shaped, and the fluid flow directions at both ends of the first bend 1212 form a certain angle. Thus, the first bend 1212 can change the flow direction of the fluid, thereby allowing the two connected first heat exchange sections 1211 to be extended and arranged within a preset area, thereby increasing the heat exchange area of ​​the first heat exchange section 121 and improving the heat exchange efficiency of the first heat exchange section 121. At the same time, the first bend 1212 is arc-shaped, and the arc shape can reduce the flow resistance of the fluid and reduce the pressure drop, thereby increasing the flow rate of the fluid and further increasing the heat exchange efficiency of the first heat exchange section 121. Moreover, it can also make the structure of the first heat exchange tube 1a more compact and occupy a smaller space, facilitating the miniaturization design of the battery 200.

[0235] For example, the first bend 1212 is semicircular in shape to connect two parallel and spaced-apart first heat exchange sections 1211. This increases the design diversity of the heat exchange channel 10 and improves the compatibility of the first heat exchange tube 1a with multiple battery cells 100. The structure is simple and easy to manufacture. Of course, the bending angle of the first bend 1212 can be adjusted as needed, for example, to 150° or 135°.

[0236] In addition, the number of the first bends 1212 can be one, two, three or more. The first bends 1212 can make the first heat exchange tube 1a arranged in a circuitous manner, thereby increasing the heat exchange area of ​​the first heat exchange tube 1a and improving the heat exchange efficiency.

[0237] Please refer to Figures 3 to 7. In some embodiments, the second heat exchange section 122 includes a second heat exchange part 1221, a third heat exchange part 1222 and a fourth heat exchange part 1223. The second heat exchange part 1221 extends along the first side circumference of the first heat exchange section 121, the third heat exchange part 1222 is connected between the second heat exchange part 1221 and the first heat exchange section 121, and the third heat exchange part 1222 extends along the second side circumference of the first heat exchange section 121. The first end of the third heat exchange part 1222 is connected to the second heat exchange part 1221 at an angle, and the second end of the third heat exchange part 1222 is connected to the first heat exchange section 121 at an angle. The fourth heat exchange part 1223 is connected to the second heat exchange part 1221, and the fourth heat exchange part 1223 is connected to the second heat exchange part 1221 at an angle. The fourth heat exchange part 1223 extends along the third side circumference of the first heat exchange section 121.

[0238] It can be understood that the fourth heat exchange part 1223 is connected to the end of the second heat exchange part 1221 away from the third heat exchange part 1222, the fourth heat exchange part 1223, the second heat exchange part 1221 and the third heat exchange part 1222 are connected in sequence to form a U-shaped area 120, and the first heat exchange section 121 is arranged in the U-shaped area 120 and is connected to the end of the third heat exchange part 1222 away from the second heat exchange part 1221.

[0239] The first end of the third heat exchange portion 1222 is connected to the second heat exchange portion 1221 at an angle. That is, the third heat exchange portion 1222 is connected to the second heat exchange portion 1221, and the third heat exchange portion 1222 and the second heat exchange portion 1221 are not collinear or parallel, but are arranged at an angle greater than 0° and less than 180°. For example, the third heat exchange portion 1222 and the second heat exchange portion 1221 can be connected at an angle of 30°, 45°, 60°, 90°, 120°, 135°, 150°, etc.

[0240] The second end of the third heat exchange portion 1222 is connected to the first heat exchange section 121 at an angle; that is, the second end of the third heat exchange portion 1222 is connected to the second heat exchange portion 1221, and the second end of the third heat exchange portion 1222 is arranged at an angle greater than 0° and less than 180° to the first heat exchange section 121. For example, the second end of the third heat exchange portion 1222 can be connected to the first heat exchange section 121 at an angle of 30°, 45°, 60°, 90°, 120°, 135°, 150°, and so on.

[0241] The fourth heat exchange portion 1223 is connected to the second heat exchange portion 1221 and is connected to the second heat exchange portion 1221 at an angle. That is, the fourth heat exchange portion 1223 is connected to the second heat exchange portion 1221 and is arranged at an angle greater than 0° and less than 180°. For example, the fourth heat exchange portion 1223 is connected to the second heat exchange portion 1221 at an angle of 30°, 45°, 60°, 90°, 120°, 135°, 150°, etc.

[0242] It should be noted that this embodiment limits the second heat exchange section 122 to be arranged on three sides of the circumference of the first heat exchange section 121, and does not limit the specific positions of the second heat exchange section 1221, the third heat exchange section 1222 and the fourth heat exchange section 1223 relative to the first heat exchange section 121. Therefore, the specific positions of the second heat exchange section 1221, the third heat exchange section 1222 and the fourth heat exchange section 1223 can be designed according to actual conditions. For example, if the second heat exchange section 1221 can be arranged on one side of the first heat exchange section 121 in the first direction, the third heat exchange section 1222 and the fourth heat exchange section 1223 are respectively arranged on both sides of the first heat exchange section 121 in the second direction; if the second heat exchange section 1221 is arranged on one side of the first heat exchange section 121 in the second direction, the third heat exchange section 1222 and the fourth heat exchange section 1223 are respectively arranged on both sides of the first heat exchange section 121 in the first direction.

[0243] In the above embodiment, by arranging the second heat exchange part 1221, the third heat exchange part 1222 and the fourth heat exchange part 1223 on three sides of the first heat exchange section 121 respectively, the second heat exchange section 122 can surround the first heat exchange section 121, thereby increasing the compactness of the arrangement of the first heat exchange tube 1a, realizing the miniaturization of the structure of the first heat exchange tube 1a, and thus facilitating the improvement of the volume energy density of the battery 200. At the same time, the structure of the first heat exchange tube 1a can also be simplified, facilitating the processing and production of the first heat exchange assembly 102.

[0244] Please refer to FIG. 3 to FIG. 7 . In some embodiments, the first heat exchange section 121 includes a plurality of first heat exchange parts 1211 . The plurality of first heat exchange parts 1211 are bent and connected in sequence in a first direction. Among them, the second heat exchange part 1221 is located on one side of the multiple first heat exchange parts 1211 along the first direction, the third heat exchange part 1222 is located on one side of the multiple first heat exchange parts 1211 along the second direction, and the first direction and the second direction are arranged at an angle; the first end of the third heat exchange part 1222 is connected to one end of the second heat exchange part 1221 along the second direction, and the second end of the third heat exchange part 1222 is connected to the one of the multiple first heat exchange parts 1211 that is farthest from the second heat exchange part 1221 along the first direction, and the fourth heat exchange part 1223 is located on the other side of the multiple first heat exchange parts 1211 along the second direction, one end of the fourth heat exchange part 1223 is connected to one end of the second heat exchange part 1221 away from the third heat exchange part 1222, and the other end of the fourth heat exchange part 1223 extends along the first direction toward a direction away from the second heat exchange part 1221.

[0245] The plurality of first heat exchange portions 1211 are connected by bending in sequence in the first direction. That is, the plurality of first heat exchange portions 1211 are arranged sequentially in the first direction, and two adjacent and connected first heat exchange portions 1211 are connected by bending in the first direction. The first heat exchange portions 1211 may extend along a straight line parallel to the second direction, along a straight line arranged at an angle to the second direction, or along a curve and / or a broken line in the second direction.

[0246] It can be understood that the fourth heat exchange part 1223, the second heat exchange part 1221, the third heat exchange part 1222 and the first heat exchange part 1211 farthest from the second heat exchange part 1221 are connected in sequence, and multiple first heat exchange parts 1211 are arranged at intervals along the first direction and bent in sequence. In this way, the heat exchange medium can flow through the fourth heat exchange part 1223, the second heat exchange part 1221 and the third heat exchange part 1222 in sequence, and then enter the first heat exchange section 121. In the first heat exchange section 121, the medium first passes through the first heat exchange part 1211 farthest from the second heat exchange part 1221, and finally flows to the first heat exchange part 1211 closest to the second heat exchange part 1221; or, the heat exchange medium can first flow into the first heat exchange section 121. In the first heat exchange section 121, the fluid first flows through the first heat exchange part 1211 closest to the second heat exchange part 1221, flows out from the first heat exchange part 1211 farthest from the second heat exchange part 1221 and flows to the third heat exchange part 1222, and then flows through the second heat exchange part 1221 and the fourth heat exchange part 1223 in sequence through the third heat exchange part 1222.

[0247] Taking the first heat exchange tube 1a arranged in the first direction away from the coordinate origin in Figure 3 as an example, the first heat exchange portion 1211 extends straightly along the second direction, and multiple first heat exchange portions 1211 are arranged at intervals in the first direction. The second heat exchange portion 1221 is arranged on the side of the multiple first heat exchange portions 1211 away from the coordinate origin in the first direction and extends straightly in the second direction, and is used to exchange heat with the edge of the side of the multiple battery cells 100 away from the coordinate origin in the first direction. The third heat exchange portion 1222 is arranged on the side of the multiple first heat exchange portions 1211 close to the coordinate origin in the second direction and extends straightly in the first direction. The third heat exchange portion 1222 is used to exchange heat with the edge of the side of the multiple battery cells 100 close to the coordinate origin in the second direction. The fourth heat exchange portion 1223 is arranged on the side of the multiple first heat exchange portions 1211 away from the coordinate origin in the second direction and extends straightly in the first direction. The fourth heat exchange portion 1223 can be used to exchange heat with the edge of the side of the multiple battery cells 100 away from the coordinate origin in the second direction.

[0248] In the above embodiment, multiple first heat exchange parts 1211 are set up to be bent and connected in sequence in the first direction, the second heat exchange part 1221 is located on one side of the multiple first heat exchange parts 1211 along the first direction, the third heat exchange part 1222 is located on one side of the multiple first heat exchange parts 1211 along the second direction, and the fourth heat exchange part 1223 is located on the other side of the multiple first heat exchange parts 1211 along the second direction. The positional relationship among the second heat exchange part 1221, the third heat exchange part 1222, the fourth heat exchange part 1223 and the first heat exchange part 1211 is defined, the layout of the first heat exchange tube 1a is further defined, the structure of the first heat exchange tube 1a is simplified, and processing and manufacturing are facilitated.

[0249] For example, the third heat exchange section 1222 and the fourth heat exchange section 1223 extend in the first direction, while the first heat exchange section 1211 and the second heat exchange section 1221 both extend in the second direction. This can facilitate the circuitous arrangement of the first heat exchange tube 1a, thereby reducing the difficulty in producing the first heat exchange tube 1a and lowering the production cost of the first heat exchange assembly 102. Furthermore, the third heat exchange section 1222 and the fourth heat exchange section 1223 can both extend in a straight line in the first direction, while the first heat exchange section 1211 and the second heat exchange section 1221 can both extend in a straight line in the second direction. The linear structure is simple, easy to produce, and convenient to arrange, thereby further reducing the production complexity and cost of the first heat exchange channel 10.

[0250] For example, as shown in FIG3 , the third heat exchange section 1222 and the fourth heat exchange section 1223 both extend along the first direction. In the first direction, the length b1 of the fourth heat exchange section 1223 is less than or equal to the length a1 of the third heat exchange section 1222. When the length b1 of the fourth heat exchange section 1223 is equal to the length a1 of the third heat exchange section 1222, the fourth heat exchange section 1223, the second heat exchange section 1221, and the third heat exchange section 1222 are sequentially connected to form a standard U-shaped flow channel. The two ends of the U-shaped region 120 have similar dimensions, which facilitates controlling the temperature difference between the battery cells 100 at both ends in the second direction and improves temperature uniformity. When the length b1 of the fourth heat exchange section 1223 is less than the length a1 of the third heat exchange section 1222, this facilitates avoiding other flow channel sections, other heat exchange channels, or other components of the first heat exchange tube 1a, thereby facilitating the layout of the first heat exchange tube 1a and achieving a compact structure.

[0251] 3 , in some embodiments, the fourth heat exchange portion 1223 extends along the first direction and extends to a position close to one of the plurality of first heat exchange portions 1211 that is farthest from the second heat exchange portion 1221. For example, the fourth heat exchange portion 1223 extends along the first direction, one end of the fourth heat exchange portion 1223 is connected to the second heat exchange portion 1221, and the other end of the fourth heat exchange portion 1223 extends to a position close to one of the plurality of first heat exchange portions 1211 that is farthest from the second heat exchange portion 1221. In other words, the other end of the fourth heat exchange portion 1223 extends to be flush with the first heat exchange portion 1211 farthest from the second heat exchange portion 1221, or the other end of the fourth heat exchange portion 1223 extends to be close to the first heat exchange portion 1211 farthest from the second heat exchange portion 1221, or the other end of the fourth heat exchange portion 1223 extends beyond the first heat exchange portion 1211 farthest from the second heat exchange portion 1221.

[0252] In this way, the length of the fourth heat exchange part 1223 can be increased, the heat exchange area of ​​the fourth heat exchange part 1223 can be increased, and the heat exchange effect of the first heat exchange component 102 can be further improved. At the same time, it is also beneficial to the layout of the first heat exchange tube 1a.

[0253] Please refer to Figure 5. In some embodiments, the first heat exchange section 121 may include a plurality of first heat exchange parts 1211, and the plurality of first heat exchange parts 1211 are bent and connected in sequence in the first direction; wherein the second heat exchange part 1221 is located on one side of the plurality of first heat exchange parts 1211 along the second direction, and the third heat exchange part 1222 is located on one side of the plurality of first heat exchange parts 1211 along the first direction, and the first direction and the second direction are arranged at an angle; the first end of the third heat exchange part 1222 is connected to the second heat exchange part 1221 along the first direction. One end of the third heat exchange part 1222 is connected in the first direction, the second end of the third heat exchange part 1222 is connected to the one of the multiple first heat exchange parts 1211 that is closest to the third heat exchange part 1222 along the first direction, the fourth heat exchange part 1223 is located on the other side of the multiple first heat exchange parts 1211 along the first direction, one end of the fourth heat exchange part 1223 is connected to the end of the second heat exchange part 1221 away from the third heat exchange part 1222, and the other end of the fourth heat exchange part 1223 extends along the second direction toward a direction away from the second heat exchange part 1221.

[0254] The plurality of first heat exchange portions 1211 are connected by bending in sequence in the first direction. That is, the plurality of first heat exchange portions 1211 are arranged sequentially in the first direction, and two adjacent and connected first heat exchange portions 1211 are connected by bending in the first direction. The first heat exchange portions 1211 may extend along a straight line parallel to the second direction, along a straight line arranged at an angle to the second direction, or along a curve and / or a broken line in the second direction.

[0255] It can be understood that the fourth heat exchange part 1223, the second heat exchange part 1221 and the third heat exchange part 1222 are connected in sequence with the first heat exchange part 1211 closest to the third heat exchange part 1222, and multiple first heat exchange parts 1211 are arranged at intervals along the first direction and bent in sequence. In this way, the heat exchange medium can flow through the fourth heat exchange part 1223, the second heat exchange part 1221 and the third heat exchange part 1222 in sequence, and then enter the first heat exchange section 121. In the first heat exchange section 121, the fluid first passes through the first heat exchange part 1211 closest to the third heat exchange part 1222, and finally flows to the first heat exchange part 1211 farthest from the third heat exchange part 1222; or, the heat exchange medium can first flow into the first heat exchange section 121. In the first heat exchange section 121, the medium first flows through the first heat exchange part 1211 farthest from the third heat exchange part 1222, flows out from the first heat exchange part 1211 closest to the third heat exchange part 1222, and then flows through the second heat exchange part 1221 and the fourth heat exchange part 1223 in sequence through the third heat exchange part 1222.

[0256] In the above embodiment, by arranging the second heat exchange part 1221 to be located on one side of the multiple first heat exchange parts 1211 along the second direction, the third heat exchange part 1222 to be located on one side of the multiple first heat exchange parts 1211 along the first direction, and the fourth heat exchange part 1223 to be located on the other side of the multiple first heat exchange parts 1211 along the first direction, another layout of the first heat exchange tube 1a is defined, thereby increasing the diversity of the first heat exchange tube 1a so that it can meet the heat exchange requirements of different batteries 200, simplifying the structure of the first heat exchange tube 1a, and facilitating processing and manufacturing.

[0257] For example, as shown in Figure 5, the first heat exchange portion 1211, the third heat exchange portion 1222, and the fourth heat exchange portion 1223 extend along the second direction, while the second heat exchange portion 1221 extends along the first direction. Furthermore, the first heat exchange portion 1211, the third heat exchange portion 1222, and the fourth heat exchange portion 1223 extend linearly along the second direction, while the second heat exchange portion 1221 extends linearly along the first direction. The linear structure is simple, easy to manufacture, and convenient to arrange, thereby further reducing the production complexity and cost of the first heat exchange channel 10.

[0258] For example, the second heat exchange section 1221 and the third heat exchange section 1222 are transitionally connected via an arcuate bend, and the third heat exchange section 1222 and the first heat exchange section 1211 are transitionally connected via an arcuate bend. This changes the flow direction of the heat exchange medium, allowing the second heat exchange section 122 to extend within a predetermined area and function as a heat exchanger with the battery cell 100. Furthermore, the arcuate bend reduces fluid flow resistance and pressure drop, thereby increasing the flow rate of the heat exchange medium and further enhancing heat exchange efficiency. For example, the arc-shaped bend between the second heat exchange part 1221 and the third heat exchange part 1222, and the arc-shaped bend between the third heat exchange part 1222 and the first heat exchange part 1211 are respectively in the shape of a quarter of a circle, so that after the fluid passes through the arc-shaped bend, its flow direction is changed from the original flow direction to perpendicular to the original flow direction; at the same time, the arc shape can also reduce the resistance to fluid flow, so that the fluid can flow smoothly in the arc-shaped bend, effectively preventing the medium from flowing too slowly and causing a decrease in heat exchange efficiency.

[0259] Please refer to Figures 3 and 4. In some embodiments, the second heat exchange section 122 also includes a fifth heat exchange section 1224, which extends along the fourth side periphery of the first heat exchange section 121, and the fifth heat exchange section 1224 closes at least part of the opening of the U-shaped area 120 formed by the second heat exchange section 121, the third heat exchange section 122 and the fourth heat exchange section 125. Then, one of the above-mentioned first heat exchange sections 1211 can extend along the fourth side periphery of the first heat exchange section 121.

[0260] It can be understood that the fifth heat exchange portion 1224 can close part of the opening of the U-shaped area 120, or completely close the opening of the U-shaped area 120, thereby, the second heat exchange section 122 can basically cover the peripheral position of the battery 200 and exchange heat with the peripheral edge of the battery assembly. In this way, the second heat exchange section 122 can exchange heat with all or most of the peripheral edges of the battery assembly. Therefore, the structure of the first heat exchange tube 1a can be set according to the actual arrangement of multiple battery cells 100 or heat exchange requirements, thereby optimizing the heat exchange structure and improving the heat exchange efficiency.

[0261] In the above embodiment, by providing the fifth heat exchange portion 1224, the second heat exchange section 122 can perform heat exchange on the four sides of the assembly consisting of all battery cells 100. In this way, the second heat exchange section 12 of a first heat exchange tube 1a can be used to perform heat exchange on the four sides of the assembly consisting of multiple battery cells 100, which is beneficial to improving the heat exchange effect on the four sides of the battery 200 and improving the temperature uniformity of the battery 200.

[0262] Illustratively, the fifth heat exchange portion 1224 is arranged opposite to the first heat exchange portion 1221, and the fifth heat exchange portion 1224 extends along the second direction, the fifth heat exchange portion 1224 is connected between the second end of the third heat exchange portion 1222 and the first heat exchange section 111, and the fifth heat exchange portion 1224 is connected to the third heat exchange portion 1222 at an angle, and the fifth heat exchange portion 1224 is connected to the first heat exchange section 111 at an angle.

[0263] It should be noted that, in the embodiment of the present application, "the fifth heat exchange part 1224 is connected to the third heat exchange part 1222 at an angle" and "the fifth heat exchange part 1224 is connected to the first heat exchange section 111 at an angle" may refer to that the corresponding two parts are connected and arranged at an angle greater than 0° and less than or equal to 180°; obviously, the third heat exchange part 1222 and the second heat exchange part 1221 are arranged at an angle greater than 0° and less than 180°, and the fourth heat exchange part 1223 and the second heat exchange part 1221 are arranged at an angle greater than 0° and less than 180°.

[0264] In some embodiments, the first heat exchange section 121 is connected to the downstream of the second heat exchange section 122 along the medium flow direction, that is, the heat exchange medium first flows through the second heat exchange section 122 and then flows into the first heat exchange section 121, wherein the second heat exchange section 122 is arranged around the circumference of the first heat exchange section 121. When the first heat exchange tube 1a exchanges heat with the battery cell 100, the peripheral temperature of the assembly composed of all battery cells 100 (hereinafter referred to as the battery assembly) dissipates heat quickly, especially under low-temperature heating conditions. The high-temperature heat exchange medium starts to exchange heat from the second heat exchange section 122, which can enable the first heat exchange tube 1a to preferentially exchange heat on the outer circumference of the battery assembly, thereby helping to improve the temperature difference between the inside and outside of the above-mentioned battery assembly, and to a certain extent, improve the service life of the battery 200.

[0265] In some embodiments, the heat exchange assembly 110 is configured as follows: when heating the battery cell 100, the first connecting section 121 is connected to the downstream of the second heat exchange section 122 along the medium flow direction; when cooling the battery cell 100, the first heat exchange section 121 is connected to the upstream of the second heat exchange section 122 along the medium flow direction.

[0266] For example, when heating the battery assembly of battery 200, the temperature of the heat exchange medium flowing in the heat exchange assembly 110 is higher than the operating temperature of the battery 200. The heat exchange assembly 110 heats the battery assembly, and the high-temperature heat exchange medium first flows into the second heat exchange section 122 and then flows to the first heat exchange section 121. The temperature of the heat exchange medium flowing inside the second heat exchange section 122 is higher than the temperature of the heat exchange medium inside the first heat exchange section 121.

[0267] Since the high-temperature medium first enters the second heat exchange section 122 located outside the first heat exchange tube 1a, the second heat exchange section 122 can first heat the battery cells 100 outside the battery assembly, and then cool the battery cells 100 in the middle of the battery assembly after the heat exchange medium enters the first heat exchange section 121. Since the battery cells 100 at the periphery of the battery assembly dissipate more heat to the external environment, the temperature of the battery cells 100 at the periphery of the battery assembly drops more. The heat exchange medium first heats the battery cells 100 at the periphery of the battery assembly. The higher temperature heat exchange medium can increase the temperature of the battery cells 100 at the periphery while compensating for the heat lost by the battery cells 100 due to heat dissipation to the external environment, thereby meeting their heating needs. The battery cells 100 at the middle position of the battery assembly have less contact area with the external environment and less heat loss. The lower temperature heat exchange medium flowing in the first heat exchange section 121 can cooperate with the heat generated by the battery cells 100 themselves to well meet their heating needs. As a result, the heating effects obtained by the battery cells 100 at the periphery of the battery assembly and the battery cells 100 at the middle position of the battery assembly are basically the same, and the temperatures of the battery cells 100 at the periphery of the battery assembly and the battery cells 100 at the middle position of the battery assembly after heating are relatively consistent, making the temperature distribution inside the battery 200 more uniform.

[0268] When cooling the battery components of the battery 200, the temperature of the heat exchange medium flowing in the heat exchange component 110 is lower than the operating temperature of the battery 200. The heat exchange component 110 is used to cool the battery 200. The heat exchange medium flows from the first heat exchange section 121 to the second heat exchange section 122. The temperature of the heat exchange medium flowing in the first heat exchange section 121 is lower than the temperature of the heat exchange medium inside the second heat exchange section 122.

[0269] When the battery 200 is cooled, the heat exchange medium flows from the first heat exchange section 121 to the second heat exchange section 122 , that is, the heat exchange medium flows from the middle portion of the battery assembly to the edge portion of the battery assembly and exchanges heat. Among them, since the heat dissipation of the battery cells 100 at the periphery of the battery 200 is better than that of the internal battery cells 100, the lower temperature heat exchange medium of the first heat exchange section 121 can better meet the heat dissipation requirements of the battery cells 100 at the middle position of the battery assembly. At the same time, since the battery cells 100 at the periphery of the battery assembly can directly dissipate heat naturally toward the external environment, even if the temperature of the heat exchange medium of the second heat exchange section 122 is slightly higher, it can still meet the heat dissipation requirements of the peripheral battery cells 100, so that the cooling effects obtained by the battery cells 100 at the periphery of the battery assembly and the battery cells 100 at the middle position of the battery assembly are roughly the same, and then the temperatures of the battery cells 100 at the periphery of the battery assembly and the battery cells 100 at the middle position of the battery assembly are relatively consistent after cooling and heat dissipation, reducing the temperature difference between the inside and outside of the battery assembly, and making the temperature distribution in the battery 200 more uniform.

[0270] Please refer to Figures 5 to 7. In some embodiments, at least one heat exchange tube 1 is configured as a second heat exchange tube 1b. The second heat exchange tube 1b and the first heat exchange tube 1a are arranged on the same side of the battery cell 100. The connecting section 12 of the second heat exchange tube 1b is bent and arranged in the U-shaped area 120 of the first heat exchange tube 1a. The bending structure of the connecting section 12 of the second heat exchange tube 1b and the connecting section 12 of the first heat exchange tube 1a are the same or different.

[0271] For example, when the bending structure of the connecting section 12 of the second heat exchange tube 1b is the same as the bending structure of the connecting section 12 of the first heat exchange tube 1a, the connecting section 12 of the second heat exchange tube 1b may include a U-shaped area 120 with the same structure as the connecting section 12 of the first heat exchange tube 1a, and the connecting section 12 of the second heat exchange tube 1b also includes a first heat exchange part, a second heat exchange part, a third heat exchange part and a fourth heat exchange part. The fourth heat exchange part, the second heat exchange part and the third heat exchange part of the second heat exchange tube 1b are bent and connected in sequence to form a U-shaped structure. There are multiple first heat exchange parts of the second heat exchange tube 1b and they are arranged in the U-shaped area 120 of the second heat exchange tube 1b. The multiple first heat exchange parts are arranged at intervals and bent and connected in sequence; wherein, the first heat exchange part, the second heat exchange part, the third heat exchange part and the fourth heat exchange part of the second heat exchange tube 1b are all arranged in the U-shaped area 120 of the first heat exchange tube 1a.

[0272] Of course, in other examples, the bending structure of the connecting section 12 of the second heat exchange tube 1 b may also be different from the bending structure of the connecting section 12 of the first heat exchange tube 1 a .

[0273] In the above technical solution, by setting the second heat exchange tube 1b, the diversity of the heat exchange flow channel 10 of the heat exchange component 110 can be increased, making the arrangement of the heat exchange tube 1 more flexible, which is beneficial to further improve the heat exchange effect of the heat exchange component 110 and improve the temperature uniformity of the battery 200.

[0274] Exemplarily, for the second heat exchange tube 1b: multiple first heat exchange parts 1211 are bent and connected in sequence in the first direction, the second heat exchange part 1221 is located on one side of the multiple first heat exchange parts 1211 along the second direction, and the third heat exchange part 1222 is located on one side of the multiple first heat exchange parts 1211 along the first direction, and the first direction and the second direction are arranged at an angle; the first end of the third heat exchange part 1222 is connected to one end of the second heat exchange part 1221 along the first direction, and the second end of the third heat exchange part 1222 is connected to the one of the multiple first heat exchange parts 1211 that is closest to the third heat exchange part 1222 along the first direction, and the fourth heat exchange part 1223 is located on the other side of the multiple first heat exchange parts 1211 along the first direction, one end of the fourth heat exchange part 1223 is connected to one end of the second heat exchange part 1221 away from the third heat exchange part 1222, and the other end of the fourth heat exchange part 1223 extends along the second direction toward a direction away from the second heat exchange part 1221.

[0275] Of course, in other examples, for the second heat exchange tube 1b: multiple first heat exchange parts 1211 are bent and connected in sequence in the first direction, the second heat exchange part 1221 is located on one side of the multiple first heat exchange parts 1211 along the first direction, and the third heat exchange part 1222 is located on one side of the multiple first heat exchange parts 1211 along the second direction, and the first direction and the second direction are arranged at an angle; the first end of the third heat exchange part 1222 is connected to one end of the second heat exchange part 1221 along the second direction, and the second end of the third heat exchange part 1222 is connected to the one of the multiple first heat exchange parts 1211 farthest from the second heat exchange part 1221 along the first direction, and the fourth heat exchange part 1223 is located on the other side of the multiple first heat exchange parts 1211 along the second direction, one end of the fourth heat exchange part 1223 is connected to one end of the second heat exchange part 1221 away from the third heat exchange part 1222, and the other end of the fourth heat exchange part 1223 extends along the first direction toward a direction away from the second heat exchange part 1221.

[0276] Please refer to Figure 7. In some embodiments, the connecting section 12 of the second heat exchange tube 1b includes a U-shaped area 120 with the same structure as the connecting section 12 of the first heat exchange tube 1a. At least a portion of the first heat exchange section 121 of the connecting section 12 of the first heat exchange tube 1a is arranged in the U-shaped area 120 of the second heat exchange tube 1b. Then, a portion of the first heat exchange section 121 of the connecting section 12 of the first heat exchange tube 1a is arranged in the U-shaped area 120 of the second heat exchange tube 1b, or the entire first heat exchange tube 121 of the connecting section 12 of the first heat exchange tube 1a is arranged in the U-shaped area 120 of the second heat exchange tube 1b.

[0277] In the above technical solution, by arranging at least part of the first heat exchange section 121 of the first heat exchange tube 1a in the U-shaped area 120 of the second heat exchange tube 1b, the first heat exchange tube 1a and the second heat exchange tube 1a can be arranged around each other. In this way, the winding method of multiple heat exchange tubes 1 can be arranged according to the heat exchange requirements of various parts of the battery assembly, further increasing the heat exchange effect of the heat exchange assembly 110 and improving the temperature uniformity of the battery 200.

[0278] Please refer to Figure 7. In some embodiments, the connecting section 12 of the second heat exchange tube 1b includes a third heat exchange section 123 and a fourth heat exchange section 124 that are bent and connected. The third heat exchange section 123 and the fourth heat exchange section 124 are respectively bent to form a U-shaped area 120. The third heat exchange section 123 is arranged in the U-shaped area 120 of the fourth heat exchange section 124, and at least part of the first heat exchange section 121 of the first heat exchange tube 1a is arranged in the U-shaped area 120 of the third heat exchange section 123.

[0279] In the embodiment of the present application, the opening orientation of the U-shaped region 120 of the third heat exchange segment 123 may be the same as or different from the opening orientation of the U-shaped region 120 of the fourth heat exchange segment 124. For example, the opening orientation of the U-shaped region 120 of the third heat exchange segment 123 is the same as the opening orientation of the U-shaped region 120 of the fourth heat exchange segment 124. In this case, the three heat exchange segments of the third heat exchange segment 123 and the three heat exchange portions of the fourth heat exchange segment 124 can be arranged in parallel, respectively, to simplify the arrangement of the second heat exchange tube 1b and to provide a clearance for at least a portion of the first heat exchange segment 121 of the first heat exchange tube 1a to extend into the U-shaped region 120 of the third heat exchange segment 123.

[0280] In the above technical solution, by arranging the above-mentioned at least part of the first heat exchange section 121 of the first heat exchange tube 1a to be arranged in the U-shaped area 120 of the third heat exchange section 123, the above-mentioned at least part of the first heat exchange section 121 of the first heat exchange tube 1a is also located in the U-shaped area 120 of the fourth heat exchange section 124. On the premise that the first heat exchange tube 1a and the second heat exchange tube 1b are wound around each other, it is convenient to simplify the winding arrangement of the two, and at the same time it is beneficial to further improve the heat exchange effect and improve the temperature uniformity of the battery 200.

[0281] For example, as shown in Figure 7, the third heat exchange section 123 includes a seventh heat exchange section 1231, an eighth heat exchange section 1232 and a ninth heat exchange section 1233, and the eighth heat exchange section 1232 and the ninth heat exchange section 1233 are respectively bent and connected at both ends of the length of the seventh heat exchange section 1231; the fourth heat exchange section 124 includes a tenth heat exchange section 1241, an eleventh heat exchange section 1242 and a twelfth heat exchange section 1243, and the eleventh heat exchange section 1242 and the twelfth heat exchange section 1243 are respectively bent and connected at both ends of the length of the tenth heat exchange section 1241.

[0282] For example, the seventh heat exchange part 1231 and the tenth heat exchange part 1241 extend in parallel, and the eighth heat exchange part 1232, the ninth heat exchange part 1233, the eleventh heat exchange part 1242 and the twelfth heat exchange part 1243 extend in parallel; in other examples, the seventh heat exchange part 1231 and the tenth heat exchange part 1241 can also be arranged at an angle.

[0283] Please refer to Figure 7. In some embodiments, the connecting section 12 of the second heat exchange tube 1b also includes a fifth heat exchange section 125. The fifth heat exchange section 125 includes a sixth heat exchange part 1251 and a second bending part 1252. There are multiple sixth heat exchange parts 1251, and the multiple sixth heat exchange parts 1251 are arranged at intervals along the third direction X3. Each sixth heat exchange part 1251 extends along the fourth direction X4. The second bending part 1252 is bent and connected between two adjacent sixth heat exchange parts 1251, so that the multiple sixth heat exchange parts 1251 are connected in sequence, and the fourth direction is set at an angle to the third direction.

[0284] A fifth heat exchange section 125 is provided between the third heat exchange section 123 and the fourth heat exchange section 124; and / or, a fifth heat exchange section 125 is provided between the third heat exchange section 123 and the corresponding port 11 (i.e., the port 11 corresponding to the end of the third heat exchange section 123 away from the fourth heat exchange section 124). Thus, the fifth heat exchange section 125 is provided at at least one of the two ends of the length of the third heat exchange section 123. The fifth heat exchange section 125 can be provided within the U-shaped region 120 of the fourth heat exchange section 124 and outside the U-shaped region 120 of the third heat exchange section 123.

[0285] For example, the second bend 1252 is arc-shaped, with the fluid flow directions at both ends of the second bend 1252 forming a certain angle. Thus, the second bend 1252 can change the fluid flow direction, thereby allowing the two connected sixth heat exchange sections 1251 to be arranged in an extended manner within a predetermined area, thereby increasing the heat exchange area of ​​the fifth heat exchange section 125 and improving the heat exchange efficiency of the fifth heat exchange section 125. Furthermore, the second bend 1252 is arc-shaped, and this arc shape can reduce the flow resistance of the fluid and reduce pressure drop, thereby increasing the flow rate of the fluid and further increasing the heat exchange efficiency of the fifth heat exchange section 125. Furthermore, this can make the structure of the second heat exchange tube 1b more compact and occupy less space, facilitating the miniaturization of the battery 200.

[0286] For example, the second bend 1252 is semicircular in shape to connect the two parallel and spaced-apart sixth heat exchange sections 1251. This increases the design diversity of the heat exchange channel 10, improves the compatibility of the second heat exchange tube 1b with multiple battery cells 100, and provides a simple structure for easy production. Of course, the bending angle of the second bend 1252 can be adjusted as needed, for example, to 150° or 135°.

[0287] In addition, the number of the second bends 1252 can be one, two, three or more. The second bends 1252 can make the second heat exchange tube 1b arranged in a circuitous manner, thereby increasing the heat exchange area of ​​the second heat exchange tube 1b and improving the heat exchange efficiency.

[0288] In the above technical solution, by setting the fifth heat exchange section 125, it is convenient to further increase the heat exchange area of ​​the second heat exchange tube 1b, improve the heat exchange effect of the second heat exchange tube 1b, and at the same time be conducive to achieving temperature control of the internal battery cell 100, and the setting of the fifth heat exchange section 125 will not affect the mutual winding between the first heat exchange tube 1a and the second heat exchange tube 1b.

[0289] For example, the third direction X3 is the same as the first direction X1, and the fourth direction X4 is the same as the second direction X2.

[0290] Please refer to Figure 7. In some embodiments, at least one heat exchange tube 1 is configured as a third heat exchange tube 1c. The connecting section 12 of the third heat exchange tube 1c is bent and arranged in the U-shaped area 120 of the second heat exchange tube 1b. Then, the connecting section 12 of the third heat exchange tube 1c is non-straight.

[0291] In the above technical solution, the connecting section 12 of the third heat exchange tube 1c is bent and arranged in the U-shaped area 120 of the second heat exchange tube 1b, so as to further achieve good temperature control of the internal battery cell 100, which is beneficial to improve the temperature distribution of the entire battery 200 and facilitate the improvement of the temperature uniformity of the battery 200.

[0292] For example, when the second heat exchange tube 1b includes a third heat exchange section 123 and a fourth heat exchange section 124 that are bent and connected, the connecting section 12 of the third heat exchange tube 1c is bent and arranged in the U-shaped area 120 of the fourth heat exchange section 124 and is located outside the U-shaped area 120 of the third heat exchange section 123; or, the connecting section 12 of the third heat exchange tube 1c is bent and arranged in the U-shaped area 120 of the third heat exchange section 123.

[0293] In the embodiment of the present application, the bending configuration of the portion of the third heat exchange tube 1c disposed within the U-shaped region 120 of the second heat exchange tube 1b is not specifically limited. For example, the third heat exchange tube 1c may be substantially S-shaped, but is not limited thereto. For example, as shown in FIG7 , the connecting section 12 of the third heat exchange tube 1c includes a sixth heat exchange section 126 and a seventh heat exchange section 127 . The sixth heat exchange section 126 is bent to form the U-shaped region 120 . The seventh heat exchange section 127 is bent within the U-shaped region 120 of the sixth heat exchange section 126 , and the seventh heat exchange section 127 is bent and connected to the sixth heat exchange section 126 .

[0294] Exemplarily, the seventh heat exchange section 127 includes a thirteenth heat exchange section 1271 and a third bending section 1272, the thirteenth heat exchange section 1271 is multiple and is arranged at intervals along the first direction, each thirteenth heat exchange section 1271 extends along the second direction, and the third bending section 1272 is arc-shaped and is bent and connected between two adjacent thirteenth heat exchange sections 1271, so that the multiple thirteenth heat exchange sections 1271 are connected in sequence; of course, the multiple thirteenth heat exchange sections 1271 can also be arranged at intervals along the second direction, and each thirteenth heat exchange section 1271 extends along the first direction, but is not limited to this.

[0295] In the embodiment of the present application, no matter how many heat exchange tubes 1 the heat exchange assembly 110 includes, when the number of heat exchange tubes 1 configured as the first heat exchange tube 1a is one, that is, when there is one first heat exchange tube 1a, the U-shaped area of ​​the first heat exchange tube 1a is located at the outermost circumference of the heat exchange assembly 110.

[0296] In a second aspect, an embodiment of the present application provides a battery 200, comprising a housing 101 and a battery cell 100, wherein the battery cell 100 is disposed within the housing 101. The battery 200 further comprises at least one of a first heat exchange assembly 102, a second heat exchange assembly 103, and a third heat exchange assembly 104, wherein the at least one of the first heat exchange assembly 102, the second heat exchange assembly 103, and the third heat exchange assembly 104 is configured to exchange heat with the battery cell 100, and the at least one of the first heat exchange assembly 102, the second heat exchange assembly 103, and the third heat exchange assembly 104 is the aforementioned heat exchange assembly 110, the first heat exchange assembly 102 is disposed within the housing 101, and the first heat exchange assembly 102 is located between the battery cell 100 and the housing 101, the second heat exchange assembly 103 is disposed outside the housing 101, and the third heat exchange assembly 104 is disposed between two adjacent battery cells 100.

[0297] In the above technical solution, at least one of the first heat exchange component 102, the second heat exchange component 103 and the third heat exchange component 104 is set as the above-mentioned heat exchange component 110 and is used for heat exchange with the battery cell 100. Since the heat exchange component 110 is easy to assemble and seal, it is beneficial to improve the assembly efficiency of the battery 200.

[0298] For example, battery 200 includes a first heat exchange assembly 102, which is the aforementioned heat exchange assembly 110. Since the aforementioned heat exchange tube 1 is disposed within the housing 101 and between the battery cell 100 and the housing 101, good heat transfer between the heat exchange tube 1 and the battery cell 100 is facilitated, while also facilitating sealing of the heat exchange tube 1. In this case, the first heat exchange assembly 102 can be disposed on any side of the battery cell 100; for example, the first heat exchange assembly 102 can be disposed on at least one of the top, bottom, left, right, front, and rear sides of the battery cell 100. In other words, for the housing 101, the first heat exchange assembly 102 can be disposed on at least one of the top wall, bottom wall 1011a, left wall, right wall, front wall, and rear wall of the housing 101.

[0299] The fixing method of the first heat exchange component 102 and the box body 101 includes, but is not limited to, bonding the first heat exchange component 102 and the box body 101 together, for example, the first heat exchange component 102 is bonded to the box body 101 by double-sided tape or structural adhesive.

[0300] For another example, the battery 200 includes a second heat exchange component 103, which can be fitted with the outer wall of the box body 101 so as to achieve heat exchange with the battery cell 100 through the box body 101. The second heat exchange component 103 is the above-mentioned heat exchange component 110. Since the above-mentioned heat exchange tube 1 is arranged outside the box body 101, the heat exchange tube 1 and the battery cell 100 are separated by the box body 101. There is no need to consider the insulation setting between the heat exchange tube 1 and the battery cell 100, which can simplify the insulation design of the second heat exchange component 103, facilitate the simplification of the setting of the battery 200, reduce the processing difficulty and production cost, and the second heat exchange component 103 will not occupy the space in the box body 101, so that the capacity of the battery 200 will not be reduced due to the second heat exchange component 103.

[0301] In the embodiment of the present application, when the battery 200 includes a second heat exchange component 103, there is no specific restriction on the setting position of the second heat exchange component 103; for example, the second heat exchange component 103 can be arranged on the lower side of the bottom wall 1011a of the box body 101, so that the second heat exchange component 103 can exchange heat with the battery cells 100 within a relatively large range, which is beneficial to improving the temperature control effect and temperature control efficiency of the battery cells 100. At this time, by arranging a bottom guard plate 113 under the second heat exchange component 103, the second heat exchange component 103 can be more reliably protected, the risk of the second heat exchange component 103 being damaged by collision and bump is reduced, and the working reliability of the second heat exchange component 103 is improved.

[0302] For another example, when the battery 200 includes the third heat exchange assembly 104 , the third heat exchange assembly 104 can perform heat exchange with an adjacent battery cell 100 , and thus the third heat exchange assembly 104 can perform heat exchange with at least two battery cells 100 .

[0303] Referring to Figures 10-12, in some embodiments, the battery 200 includes a first heat exchange assembly 102 and a fixed beam 105. The fixed beam 105 is disposed within the housing 101 and divides the interior space of the housing 101 into a first chamber 101a and a second chamber 101b. A portion of the first heat exchange assembly 102 and the battery cell 100 are both disposed within the first chamber 101a. The portion of the first heat exchange portion 1211 located within the first chamber 101a is configured to exchange heat with the battery cell 100. At least one escape channel 200a is formed between the fixed beam 105 and the housing 101. Portions of the fixed beam 105 and the housing 101 define portions of the walls of the escape channel 200a, and portions of the housing 101 define portions of the walls of the escape channel 200a. All ends 11 at the retracted position R are disposed within corresponding escape channels 200a, extending from the first chamber 101a to the second chamber 101b.

[0304] In the above technical solution, at least one avoidance channel 200a is formed between the fixed beam 105 and the box body 101, and all the ends 11 of the folded position R are passed through the corresponding avoidance channel 200a, so that the ends 11 extend from the first cavity 101a to the second cavity 101b, which facilitates the assembly of all the ends 11 of the folded position R with the fixed beam 105, and facilitates the extension of all the ends 11 of the folded position R to the second cavity 101b without bending around the fixed beam 105, which is conducive to simplifying the structure of all the ends 11 of the folded position R; at the same time, the above avoidance channel The setting of 200a can make the interface of the end 11 located in the second cavity 101b, that is, the interface of the end 11 and the battery cell 100 are located in different cavities respectively, so that the box body 101 can provide a suitable layout space for the interface of the end 11 to be connected with other components, and facilitate the connection setting of the end 11 with other components. At the same time, the fixed beam 105 can separate the interface position of the end 11 from the battery cell 100, which is beneficial to reduce the impact of heat exchange medium leakage at the interface position of the end 11 on the battery cell 100, and facilitate to improve the reliability of the battery cell 100.

[0305] For example, the avoidance channel 200a corresponds one-to-one to the folding position R, so that on the premise of achieving smooth assembly of the folding position R, it is helpful to reduce the cross-sectional area of ​​the avoidance channel 200a. If the fixed beam 105 defines the avoidance channel 200a, it is helpful to reduce the weakening of the structural strength of the fixed beam 105.

[0306] Exemplarily, as shown in Figure 10, the fixed beam 105 extends along the first direction, the first cavity 101a and the second cavity 101b are arranged in sequence along the second direction, and all the ends 11 at the retracted position R are passed through the corresponding avoidance channel 200a along the second direction, so that each end 11 at the retracted position R extends out of the two ends of the avoidance channel 200a along the second direction; each heat exchange tube 1 also has a connecting section 12 connected between the two ends 11, and the connecting sections 12 of all heat exchange tubes 1 are located in the first cavity 101a.

[0307] Furthermore, when the heat exchange tube 1 is a flat tube or a harmonica tube, the multiple ends 11 at the retracted position R can be spaced apart along the width direction of the end 11, which is beneficial to reducing the height of the avoidance channel 200a in the thickness direction of the heat exchange tube 1, reducing the difficulty of forming the avoidance channel 200a, and / or reducing the weakening of the corresponding structure.

[0308] In some embodiments, the first cavity 101a may also contain other components in addition to the battery cells 100. For example, the fixed beam 105 may be configured as a first expansion beam B1, and a second expansion beam B2 may be further disposed within the first cavity 101a, with all battery cells 100 sandwiched between the first expansion beam B1 and the second expansion beam B2. For another example, the fixed beam 105 may be configured as a first expansion beam B1, and a second expansion beam B2 and a third expansion beam B3 may be further disposed within the first cavity 101a, with the third expansion beam B3 positioned between the first expansion beam B1 and the second expansion beam B2. A battery cell 100 may be disposed between the first expansion beam B1 and the third expansion beam B3, and a battery cell 100 may also be disposed between the second expansion beam B2 and the third expansion beam B3.

[0309] It is worth noting that the fixed beam 105 can be constructed as an expansion beam, or as other beam structures in the box body 101 except the expansion beam, such as a partition beam.

[0310] Referring to FIG. 12 , in some embodiments, the fixed beam 105 has a first recess 105a and / or the wall of the box body 101 has a second recess 101c, and the first recess 105a and / or the second recess 101c form an escape passage 200a. For example, the fixed beam 105 has the first recess 105a, the wall of the box body 101 does not have the second recess 101c, and only the first recess 105a forms the escape passage 200a; or, the fixed beam 105 does not have the first recess 105a, the wall of the box body 101 has the second recess 101c, and only the second recess 101c forms the escape passage 200a; or, the fixed beam 105 has the first recess 105a, the wall of the box body 101 has the second recess 101c, and the first recess 105a and the second recess 101c cooperate to form the escape passage 200a.

[0311] In the above solution, the wall of the box body 101 can be understood as the wall of the box body 101 corresponding to the first heat exchange component 102. For example, if the first heat exchange component 102 is provided between the bottom wall 1011a of the box body 101 and the battery cell 100, then an escape channel 200a is formed between the bottom wall 1011a of the box body 101 and the fixed beam 105, and all the ends 11 of the retracted position R of the first heat exchange component 102 are passed through the corresponding escape channel 200a; for another example, if the first heat exchange component 102 is provided between the top wall of the box body 101 and the battery cell 100, then the top wall of the box body 101 and the fixed beam 105 are An avoidance channel 200a is formed between the beams 105, and all the end portions 11 of the retracted position R of the first heat exchange component 102 are passed through the corresponding avoidance channel 200a; for another example, a first heat exchange component 102 is provided between the side wall of the box body 101 and the battery cell 100, and an avoidance channel 200a is formed between the side wall of the box body 101 and the fixed beam 105, and all the end portions 11 of the retracted position R of the first heat exchange component 102 are passed through the corresponding avoidance channel 200a.

[0312] It can be seen that the first heat exchange assembly 102 and the corresponding avoidance channel 200 a can be located on the same side of the battery cell 100 to facilitate the installation and assembly of the first heat exchange assembly 102 .

[0313] In the above technical solution, the avoidance channel 200a is constructed by setting the first recess 105a and / or the second recess 101c, which facilitates the forming of the avoidance channel 200a and is convenient for making the avoidance channel 200a have a suitable cross-sectional area that can accommodate all the end portions 11 corresponding to the folding position R according to needs, so that on the premise of achieving the smooth penetration of all the end portions 11 of the folding position R, the cross-sectional area of ​​the avoidance channel 200a can be appropriately reduced, which is beneficial to reducing the difficulty of forming the avoidance channel 200a and / or reducing the weakening of the fixed beam 105.

[0314] Please refer to Figures 11 and 12. In some embodiments, the parts of all end portions 11 at the folded position R located on opposite sides of the fixed beam 105 are connected at an obtuse angle, that is, the angle α between the parts of all end portions 11 at the folded position R located on opposite sides of the fixed beam 105 is an obtuse angle.

[0315] In the above technical solution, by setting the parts of all the ends 11 of the folding position R located on the opposite sides of the fixed beam 105 to be connected at an obtuse angle, so that during the assembly process of the first heat exchange component 102, one end of all the ends 11 of the folding position R is first aligned with the avoidance channel 200a. At this time, the first heat exchange component 102 is roughly tilted. As all the ends 11 of the folding position R are passed through, the inclination angle of the first heat exchange component 102 gradually decreases until all the ends 11 of the folding position R are completely passed through. At this time, most of the first heat exchange component 102 is in contact with the corresponding wall of the box body 101, which facilitates the passing of all the ends 11 of the folding position R and is beneficial to improving the installation convenience of the first heat exchange component 102.

[0316] It can be seen that the above solution is particularly suitable for assembling the first heat exchange assembly 102 onto the box body 101 after the fixing beam 105 and the box body 101 are assembled. For example, after the fixing beam 105 and the box body 101 are welded, the fixing beam 105 and the box body 101 are electrophoresed together, and after the electrophoresis is completed, the first heat exchange assembly 102 is installed. Of course, in other embodiments of the present application, the first heat exchange assembly 102 can also be assembled onto the box body 101 first, and then the fixing beam 105 and the box body 101 are assembled.

[0317] Of course, in other embodiments, the angle α may also be a straight angle.

[0318] Referring to FIG. 10 , in some embodiments, the first heat exchange assembly 102 further includes at least one current collector 2 , which is located in the second cavity 101 b and corresponds one-to-one to the retracted positions R. The current collector 2 communicates with the interfaces of the multiple end portions 11 corresponding to the retracted positions R, or the current collector 2 separates the interfaces of the multiple end portions 11 corresponding to the retracted positions R into multiple independent flow channels.

[0319] In the above technical solution, by setting the current collector 2, multiple end portions 11 located at the same retracted position R share the same current collector 2, so as to facilitate improving the overall structural stability and reliability of the heat exchange assembly 110 while ensuring the normal circulation of the medium in each heat exchange tube 1; at the same time, since the current collector 2 is arranged in the second cavity 101b, the current collector 2 will not occupy the space of the avoidance channel 200a or the first cavity 101a, so that the arrangement of the current collector 2 is not likely to affect the energy density of the battery 200, and is not likely to affect the arrangement of the fixed beam 105 and / or the box body 101.

[0320] Please refer to Figures 11 and 12. In some embodiments, the avoidance channel 200a is configured to allow the corresponding current collector 2 to pass through; for example, after the fixed beam 105 and the box body 101 are assembled, an avoidance channel 200a is formed between the fixed beam 105 and the box body 101. When the first heat exchange component 102 is assembled, the current collector 2 can move from the side of the fixed beam 105 corresponding to the first cavity 101a to the side of the fixed beam 105 corresponding to the second cavity 101b through the avoidance channel 200a.

[0321] It can be understood that in the above scheme, the heat exchange tube 1 and the current collector 2 can be fixedly connected, and after the fixed beam 105 and the box body 101 are assembled, the structure connecting the heat exchange tube 1 and the current collector 2 is assembled to the box body 101; obviously, the above installation makes it easy for the box body 101 and the fixed beam 105 to not limit the operating space when the heat exchange tube 1 and the current collector 2 are connected (for example, the heat exchange tube 1 and the current collector 2 are welded), which is beneficial to improving the connection convenience between the heat exchange tube 1 and the current collector 2.

[0322] In the above technical solution, the avoidance channel 200a is configured to allow the corresponding collector 2 to pass through, so as to provide sufficient operating space for connecting the heat exchange tube 1 and the collector 2, thereby facilitating the connection operation of the heat exchange tube 1 and the collector 2.

[0323] Please refer to Figures 14 to 21. In some embodiments, the fixed beam 105 is constructed as a first expansion beam B1, and the fixed beam 105 has a first mating surface 105b that abuts against the battery cell 100. The battery 200 also includes a carrier 106. The carrier 106 is arranged in the avoidance channel 200a, and the carrier 106 has a second mating surface 106a that abuts against the battery cell 100. The first mating surface 105b and the second mating surface 106a are arranged flush with each other. For example, the first mating surface 105b and the second mating surface 106a can be located in the same plane; the carrier 106 has a groove 106b that avoids the end 11 corresponding to the retracted position R. The groove 106b passes through the outer peripheral side of the carrier 106, and the groove 106b can achieve avoidance of the corresponding end 11, so as to facilitate the smooth installation of the carrier 106 after the first heat exchange component 102 is installed.

[0324] It is understood that the first mating surface 105b can directly contact the battery cell 100 or indirectly abut against the battery cell 100; similarly, the second mating surface 106a can directly contact the battery cell 100 or indirectly abut against the battery cell 100. The carrier 106 is formed with at least one slot 106b, which is used to avoid one or more ends 11.

[0325] In the above technical solution, by arranging a carrier 106 in the avoidance channel 200a and making the second mating surface 106a flush with the first mating surface 105b, the carrier 106 can bear the expansion force of the battery cell 100 together with the fixed beam 105, which is beneficial to reducing the risk of lithium plating caused by excessive deformation difference between the battery cell 100 at the position of the avoidance channel 200a and other positions. It is also beneficial to reduce the risk of the battery cell 100 rupturing the shell and leaking the electrolyte due to uneven force, thereby improving the reliability of the battery 200.

[0326] For example, the slot 106b can be located on the side of the wall of the supporting member 106 that is away from the fixed beam 105 and corresponds to the avoidance channel 200a, and the side of the slot 106b that is away from the fixed beam 105 is open; for example, the first heat exchange component 102 is arranged on the bottom wall 1011a of the box body 101, the fixed beam 105 is arranged on the upper side of the bottom wall 1011a, and the lower side of the slot 106b is open. At this time, the supporting member 106 can separate the first heat exchange component 102 from the fixed beam 105, so as to increase the thermal resistance between the first heat exchange component 102 and the fixed beam 105, which is beneficial to reduce the heat or cold transferred from the first heat exchange component 102 to the fixed beam 105.

[0327] Referring to Figures 14 and 15 , in some embodiments, a stopper 106c is formed on at least one of the fixed beam 105 and the box body 101. The stopper 106c abuts against the carrier 106 to limit the movement of the carrier 106 from the first cavity 101a toward the second cavity 101b. It is also understood that the stopper 106c can directly contact and engage with the carrier 106, or can indirectly abut against the carrier 106.

[0328] In the above technical solution, a stopper 106c is formed on at least one of the fixed beam 105 and the box body 101 to limit the movement of the carrier 106 in the direction from the first cavity 101a to the second cavity 101b, so as to achieve reliable positioning of the carrier 106 in the width direction of the fixed beam 105 (for example, the second direction X2 in Figure 3). At the same time, the stopper 106c can resist the expansion force exerted by the battery cell 100 on the carrier 106, which is conducive to improving the carrying capacity of the carrier 106, so that the carrier 106 can stably bear the battery cell 100, reducing the probability of the carrier 106 moving toward the second cavity 101b under the action of the battery cell 100; and if at least one of the fixed beam 105 and the box body 101 is connected and fixed to the carrier 106 by other means, such as at least one of the fixed beam 105 and the box body 101 is bonded to the carrier 106, the above scheme is conducive to reducing the force borne by other connection methods between at least one of the fixed beam 105 and the box body 101 and the carrier 106, and is conducive to improving the setting reliability and stability of the carrier 106.

[0329] Please refer to Figures 13 to 16. In some embodiments, a stop portion 106c is formed on one side of the fixed beam 105 facing the first cavity 101a at the position of the avoidance channel 200a, that is, the end of the portion of the fixed beam 105 corresponding to the avoidance channel 200a facing the first cavity 101a is formed as the stop portion 106c; and / or, a wall of the box body 101 on which the first heat exchange component 102 is arranged is formed with a stop step 1011c protruding toward the fixed beam 105, and the stop step 1011c forms the stop portion 106c.

[0330] Exemplarily, as shown in Figure 13, the fixed beam 105 has a first recess 105a, and a stop portion 106c is formed at one end of the first recess 105a facing the first cavity 101a; and / or, as shown in Figure 15, the wall of the box body 101 has a second recess 101c, and a stop step 1011c is formed on the bottom wall of the second recess 101c.

[0331] In the above technical solution, a stopper 106c is formed on one side of the fixed beam 105 facing the first cavity 101a at the position of the avoidance space 200a, so that the stopper 106c is defined by the structure of the fixed beam 105 itself to limit the position of the carrier 106, without the need for a separate setting, which is conducive to simplifying the structure of the fixed beam 105. At the same time, the stopper 106c is located on the side of the fixed beam 105 facing the first cavity 101a, so that it is convenient for the carrier 106 to cooperate with the avoidance space 200a "along the direction from the first cavity 101a to the second cavity 101b". The installation method is matched, so that the stop portion 106c will not interfere with the assembly of the supporting member 106, which is conducive to improving the convenience of assembly; by setting the wall of the box body 101, a stop step 1011c protruding toward the fixed beam 105 is formed, and the stop step 1011c is formed as the stop portion 106c, which is convenient for utilizing the structure of the box body 101 itself to define the stop portion 106c to achieve the limitation of the supporting member 106, without the need for additional separate settings, which is conducive to simplifying the structure of the box body 101. At the same time, the setting of the stop step 1011c will not affect the sealing of the structure of the box body 101 itself.

[0332] Exemplarily, the first recess 105a of the fixed beam 105 constructs at least a portion of the avoidance channel 200a, and one end of the first recess 105a facing the first cavity 101a is formed as a stop portion 106c, which is beneficial to increase the matching area between the fixed beam 105 and the supporting member 106, and facilitates further improving the setting reliability and bearing capacity of the supporting member 106; and / or, a recessed second recess 101c is formed on the wall of the box body 101 where the first heat exchange component 102 is set, and a stop step 1011c is formed on the groove wall of the second recess 101c.

[0333] Please refer to Figure 13. In some embodiments, in the cross section of the fixed beam 105, the stop portion 106c on the fixed beam 105 is formed into an arc structure, and the cross section of the fixed beam 105 is aligned with the length direction of the fixed beam 105 (for example, the first direction X1 in Figure 3).

[0334] In the above technical solution, the stopper 106c provided on the cross section of the fixed beam 105 is formed into an arc-shaped structure. This allows the stopper 106c to limit the movement of the carrier 106 while also allowing the portion of the carrier 106 that cooperates with the stopper 106c to avoid movement to a certain extent. Furthermore, since the stopper 106c is located on the side of the fixed beam 105 facing the first cavity 101a, the carrier 106 is easily protruded from the first mating surface 105b toward the first cavity 101a due to the cooperation with the stopper 106c, thereby facilitating the flush arrangement of the second mating surface 106a with the first mating surface 105b. Furthermore, when the portion of the fixed beam 105 corresponding to the stopper 106c is an integrally formed bent plate, the stopper 106c can be located at the bend of the plate, allowing the stopper 106c to be directly formed during the forming process of the bent plate, thereby saving processing steps for the fixed beam 105, reducing processing difficulty, and improving production efficiency.

[0335] Please refer to Figures 13, 14 and 18 to 21. In some embodiments, the supporting member 106 includes a plate body 1061 and a mating portion 1062. The surface of one side of the thickness of the plate body 1061 is formed as a second mating surface 106a, and the second mating surface 106a is located on the side of the plate body 1061 facing the first cavity 101a, and the slot 106b runs through both sides of the thickness of the plate body 1061; the mating portion 1062 is formed at the outer edge of the plate body 1061, and the mating portion 1062 is stopped and matched with the fixed beam 105 to limit the movement of the supporting member 106 along the direction from the first cavity 101a to the second cavity 101b, for example, the mating portion 1062 is stopped and matched with the stop portion 106c on the fixed beam 105.

[0336] In the above technical solution, by providing the carrier 106 with a plate body 1061 and a matching portion 1062, the plate body 1061 can provide a second matching surface 106a with a larger area and a relatively flat surface, thereby improving the shielding ability of the carrier 106 to the avoidance space 200a, and the matching portion 1062 can realize the limiting of the carrier 106, and realize the reliable installation of the carrier 106, so that the carrier 106 has a certain ability to withstand the expansion force of the battery cell 100. At the same time, the carrier 106 has a simple structure and is easy to implement. In addition, since the mating portion 1062 is in abutment with the fixed beam 105, if the fixed beam 105 is deformed to a certain extent under the action of the battery cell 100, causing the first mating surface 105b to deviate from the original position and / or original posture, it is convenient for the mating portion 1062 to adapt to the deformation of the fixed beam 105 and for the second mating surface 106a of the carrier 106 to adapt and adjust with the changes in the first mating surface 105b, which to a certain extent makes it easy for the second mating surface 106a and the first mating surface 105b to always be flush or have a small misalignment.

[0337] It can be understood that when the supporting member 106 includes a plate body portion 1061 and a matching portion 1062, if the box body 101 is also formed with a stop portion 106c, the plate body portion 1061 can be stopped and matched with the stop portion 106c on the box body 101; of course, when the supporting member 106 also includes the supporting portion 1064 described below, the stop portion 106c on the box body 101 can be stopped and matched with the supporting portion 106c.

[0338] Please refer to Figure 14. In some embodiments, the mating portion 1062 has a first surface 1062a and a second surface 1062b. The first surface 1062a is formed as an arc-shaped surface concave toward the second surface 1062b and the first surface 1062a is matched with the fixed beam 105. The second surface 1062b is connected to the first surface 1062a, and the second surface 1062b is flush with the second mating surface 106a. For example, the second surface 1062b and the second mating surface 106a are located in the same plane.

[0339] In the above technical solution, the first surface 1062a of the mating portion 1062 is provided to engage with the fixed beam 105. Due to the arc-shaped setting of the first surface 1062a, it is convenient to achieve the limited cooperation between the carrier 106 and the fixed beam 105, and at the same time, it is convenient to prevent the second surface 1062b from protruding from the second mating surface 106a toward the first cavity 101a, and will not affect the cooperation between the second mating surface 106a and the battery cell 100; of course, the second surface 1062b can also engage with the battery cell 100.

[0340] Exemplarily, the first surface 1062 a of the matching portion 1062 abuts against the stop portion 106 c of the fixed beam 105 . In the cross section of the fixed beam 105 , the first surface 1062 a and the stop portion 106 c are both formed in an arc shape.

[0341] Please refer to Figure 15. In some embodiments, at least one latch hole 200d is formed on the first expansion beam B1, and the supporting member 106 also includes at least one hook portion 1063. The hook portion 1063 is formed at the outer edge of the plate body 1061 and is located on the side of the plate body 1061 facing away from the second mating surface 106a. The hook portion 1063 is clamped in the corresponding latch hole 200d, and the hook portion 1063 and the mating portion 1062 can be located on the same side of the plate body 1061, and both are located on the side of the plate body 1061 facing the fixed beam 105.

[0342] Exemplarily, the first heat exchange component 102 is arranged on the bottom wall 1011a of the box body 101, the fixed beam 105 is arranged on the upper side of the bottom wall 1011a of the box body 101, and a card hole 200d is formed on the part of the fixed beam 105 corresponding to the avoidance space 200a, and a part of the hook portion 1063 extends upward into the card hole 200d.

[0343] In the above technical solution, by setting the hook portion 1063 of the carrier 106 to be clamped in the clamping hole 200d on the fixed beam 105, it is convenient to realize the movement of the carrier 106 in the direction from the second cavity 101b toward the first cavity 101a, which is beneficial to further improve the installation reliability of the carrier 106 and improve the problem that the carrier 106 is easy to escape from the avoidance channel along the direction from the second cavity 101b toward the first cavity 101a during the assembly of the battery 200. For example, the above setting can realize the pre-limitation of the carrier 106, which is beneficial to further improve the assembly efficiency of the battery 200.

[0344] For example, for a single latch hole 200d, the latch hole 200d may correspond to one or more latch hooks 1063, and the number of latch holes 200d may be equal to or different from the number of latch hooks 1063. For example, the plurality of latch hooks 1063 are spaced apart along the length of the fixed beam 105 to improve the reliability of the pre-positioning of the carrier 106.

[0345] Exemplarily, the hook portion 1063 is configured as an elastic hook portion 1063. In this case, the hook portion 1063 may include a cantilever portion and a hook portion. The cantilever portion extends along the direction of the first cavity 101a toward the second cavity 101b, one end of the cantilever portion is connected to the plate body portion 1061, and the hook portion is provided at the other end of the cantilever portion. During the assembly process of the supporting component 106, the hook portion 1063 is engaged with the avoidance space 200a along the direction of the first cavity 101a toward the second cavity 101b, and the hook portion 1063 is squeezed and deformed by the fixed beam 105. The supporting component 106 continues to move toward the second cavity 101b until the hook portion 1063 is engaged in the hook hole 200d.

[0346] Please refer to Figures 18 to 21. In some embodiments, the support member 106 also includes at least one support portion 1064. The support portion 1064 is arranged on the side of the plate portion 1061 that is away from the second mating surface 106a, and the support portion 1064 is arranged to avoid the first heat exchange component 102. The support portion 1064 is in a stop-fit ​​relationship with the box body 101.

[0347] The support portion 1064 is arranged to avoid the first heat exchange component 102 , which can be understood as follows: in the thickness direction of the plate portion 1061 , the orthographic projection of the support portion 1064 is located outside the outer contour of the orthographic projection of the groove wall of the groove 106 b .

[0348] In the above technical solution, by providing the support portion 1064, it is convenient to strengthen the plate body 1061 and improve the structural strength of the carrier 106, and the support portion 1064 will not affect the abutment fit between the plate body 1061 and the battery cell 100; and the support portion 1064 is abutted against the box body 101, so that the force applied by the battery cell 100 to the carrier 106 is dispersed to the box body 101 through the support portion 1064, which is beneficial to further improve the installation reliability and load-bearing capacity of the carrier 106, and the carrier 106 is respectively matched with the fixed beam 105 and the box body 101 through the matching portion 1062 and the support portion 1064, so that the entire plate body 1061 can be supported and limited more evenly. At the same time, since the support portion 1064 avoids the groove 106b, the setting of the support portion 1064 will not interfere with the connecting portion 1e, which facilitates the convenient assembly of the carrier 106.

[0349] For example, the support portion 1064 can be configured as follows: the support portion 1064 and the box body 101 stop abutting in the direction from the first cavity 101a to the second cavity 101b, and / or the support portion 1064 and the box body 101 stop abutting in the thickness direction of the first heat exchange component 102 (for example, the fifth direction X5 in FIG. 7 , the fifth direction X5 can be the height direction of the battery cell 100), that is, in the normal direction of the wall of the box body 101 where the first heat exchange component 102 is set; for example, in combination with FIG. 7 and FIG. 10 , the box body 101 The bottom wall 1011a is provided with a first heat exchange component 102, the fixed beam 105 is provided on the upper side of the bottom wall 1011a of the box body 101, the first cavity 101a and the second cavity 101b are arranged in sequence along the first direction X1, and the support portion 1064 can be abutted with the bottom wall 1011a of the box body 101 in the second direction X2 (for example, the support portion 1064 abuts against the stop step 1011c on the box body 101), and / or the support portion 1064 abuts against the bottom wall 1011a of the box body 101 in the fifth direction X5.

[0350] Exemplarily, there are a plurality of support portions 1064 , and each slot 106 b is provided with at least one support portion 1064 on both sides in the length direction (eg, the first direction X1 in FIG. 1 ) of the fixed beam 105 .

[0351] Please refer to Figures 15 and 20. In some embodiments, the width of the support portion 1064 in the thickness direction of the plate body 1061 increases from the mating portion 1062 toward the first heat exchange component 102, and the width of the support portion 1064 at one end facing the wall of the box body 101 where the first heat exchange component 102 is arranged is the largest, and the width of the support portion 1064 at one end facing the mating portion 1062 is the smallest.

[0352] Exemplarily, the first heat exchange assembly 102 is arranged between the bottom wall 1011a of the box body 101 and the battery cell 100, the fixing beam 105 is arranged on the upper side of the bottom wall 1011a, and the width of the support portion 1064 in the thickness direction of the plate body 1061 increases from top to bottom, for example, the support portion 1064 is roughly formed into a triangular plate structure.

[0353] In the above technical solution, by setting the width of the support part 1064 in the direction of the plate thickness to increase from the matching part 1062 toward the first heat exchange component 102, it is convenient to use less material to increase the abutment matching area between the support part 1064 and the box body 101, thereby improving the matching reliability of the support part 1064 and the box body 101, and achieving a balance between cost and load-bearing reliability.

[0354] Exemplarily, when the supporting member 106 includes a plate body portion 1061, a matching portion 1062, a hook portion 1063 and a supporting portion 1064, the matching portion 1062 and the hook portion 1063 are located on the same side of the plate body portion 1061, and the hook portion 1063 and the supporting portion 1064 can be located on opposite sides of the plate body portion 1061. Then, while achieving the upper limit position of the supporting member 106 in the width direction of the fixed beam 105, the rotation of the supporting member 106 can also be restricted, which is beneficial to improving the stability of the supporting member 106 against the battery cell 100.

[0355] In some embodiments, the support member 106 is disposed between the first heat exchange assembly 102 and the fixed beam 105, so that the first heat exchange assembly 102 and the fixed beam 105 are separated by the support member 106. In this case, the side of the slot 106b facing the wall of the housing 101 where the first heat exchange assembly 102 is disposed is open. The thermal conductivity of the support member 106 is lower than that of the fixed beam 105; and / or the support member 106 is spaced apart from the first heat exchange assembly 102 to achieve thermal insulation between the support member 106 and the first heat exchange assembly 102.

[0356] Exemplarily, the first heat exchange component 102 is arranged on the bottom wall 1011a of the box body 101, the fixed beam 105 is arranged on the upper side of the bottom wall 1011a of the box body 101, the supporting member 106 is arranged in the avoidance space 200a, the lower side of the groove 106b is open, and the connecting part 1e is passed through the groove 106b, then the supporting member 106 can separate the connecting part 1e from the fixed beam 105.

[0357] In the above technical solution, the carrier 106 is arranged between the first heat exchange component 102 and the fixed beam 105. At the same time, the thermal conductivity of the carrier 106 is lower than the thermal conductivity of the fixed beam 105, and / or the carrier 106 is spaced apart from the first heat exchange component 102, which is beneficial to increase the thermal resistance between the first heat exchange component 102 and the fixed beam 105, and reduce the heat exchange between the expansion beam and the first heat exchange component 102. To a certain extent, it is beneficial to increase the proportion of heat or cold transferred from the first heat exchange component 102 to the battery cell 100, thereby improving the thermal management performance. In addition, when the carrier 106 is spaced apart from the first heat exchange component 102, the risk of interference between the carrier 106 and the first heat exchange component 102 can be reduced during assembly, thereby improving the installation convenience of the carrier 106.

[0358] In some embodiments, the strength of the material of the support member 106 is at least 0.8 times the strength of the material of the fixing beam 105. For example, the strength of the material of the support member 106 is 0.8, 0.85, 0.9, 1, etc. times the strength of the material of the fixing beam 105.

[0359] For example, the material of the supporting member 106 and the material of the fixing beam 105 can be the same or different; for example, the fixing beam 105 is a metal member and the supporting member 106 is a plastic member, but the present invention is not limited thereto.

[0360] In the above technical solution, by setting the strength of the material of the carrier 106 to be at least 0.8 times the strength of the material of the fixing beam 105 , the carrier 106 itself has a good bearing capacity, so as to reliably and stably withstand the expansion force of the battery cell 100 .

[0361] Please refer to Figure 14. In some embodiments, the first heat exchange component 102 is arranged on the bottom wall 1011a of the box body 101, and the end of the second mating surface 106a facing the first heat exchange component 102 is arranged flush with the end of the battery cell 100 facing the corresponding first heat exchange component 102, or, the end of the second mating surface 106a facing the first heat exchange component 102 is arranged adjacent to the first heat exchange component 102 compared to the end of the battery cell 100 facing the corresponding first heat exchange component 102.

[0362] It can be seen that when the first heat exchange assembly 102 is arranged on the lower side of the battery cell 100, the lower end of the second mating surface 106a is arranged flush with the lower end of the battery cell 100, or the lower end of the second mating surface 106a is located below the lower end of the battery cell 100.

[0363] In the above technical solution, by setting the end of the second mating surface 106a facing the first heat exchange component 102 to be flush with the end of the battery cell 100 facing the corresponding first heat exchange component 102, or, the end of the second mating surface 106a facing the first heat exchange component 102 is set adjacent to the first heat exchange component 102 compared to the end of the battery cell 100 facing the corresponding first heat exchange component 102, it is convenient to support the entire surface of the battery cell 100 facing the fixed beam 105, so as to improve the uniformity of the force applied to the battery cell 100 when it expands and deforms, improve the problems of lithium deposition, liquid leakage, etc. caused by uneven force, thereby improving the reliability of the battery 200.

[0364] Please refer to Figures 14 to 17, 24 and 25. In some embodiments, the battery 200 includes a first heat exchange component 102 and a fixed beam 105. The fixed beam 105 is arranged in the box body 101. The first heat exchange component 102 and the fixed beam 105 are spaced apart to ensure thermal insulation between the first heat exchange component 102 and the fixed beam 105.

[0365] Normally, when there are multiple battery cells, the peripheral battery cells are arranged to surround the internal battery cells. The heat exchange area of ​​the peripheral battery cells is usually larger than the heat exchange area of ​​the internal battery cells, so that there is a certain temperature difference between the peripheral battery cells and the internal battery cells. In the related technology, the heat exchange component used for the battery cells is not insulated from the expansion beam, so that a certain degree of heat exchange can be carried out between the above-mentioned heat exchange component and the expansion beam. Then the temperature of the expansion beam is greatly affected by the heat exchange component, which will make the temperature of the expansion beam lower than the peripheral battery cells when the heat exchange component cools the battery cells, and the temperature of the expansion beam higher than the peripheral battery cells when the heat exchange component heats the battery cells. At this time, the temperature difference between the peripheral battery cells and the internal battery cells will be further aggravated.

[0366] To this end, in the above technical solution, by arranging the first heat exchange component 102 and the fixed beam 105 to be thermally insulated, the thermal resistance between the first heat exchange component 102 and the fixed beam 105 is improved, which is beneficial to reducing the heat or cold transferred from the first heat exchange component 102 to the fixed beam 105, which is beneficial to reducing the temperature difference between the fixed beam 105 and the peripheral battery cell 100 abutting against it, and is convenient to improve the consistency of the heat exchange environment between the peripheral battery cell 100 and the internal battery cell 100, thereby helping to reduce the temperature difference between the peripheral battery cell 100 and the internal battery cell 100, and improving the reliability of the battery 200.

[0367] In the above solution, the first heat exchange component 102 and the fixed beam 105 are thermally insulated. It can be understood that the thermal resistance between the first heat exchange component 102 and the fixed beam 105 is greater than the thermal resistance between the first heat exchange component 102 and the battery cell 100 .

[0368] It is understandable that, during the entire life cycle of the battery 200 , the first heat exchange assembly 102 and the fixing beam 105 can always be spaced apart.

[0369] Referring to Figures 14-17, 24, and 25, in some embodiments, the first expansion beam B1 divides the interior space of the housing 101 into a first chamber 101a and a second chamber 101b. A portion of the first heat exchange assembly 102 and the battery cells 100 are disposed in the first chamber 101a. At least one escape channel 200a is formed between the first expansion beam B1 and the housing 101. All ends 11 at the retracted position R are disposed within corresponding escape channels 200a, extending from the first chamber 101a to the second chamber 101b. The interface of the ends 11 is located in the second chamber 101b. The wall of the first expansion beam B1 corresponding to the escape channel 200a is spaced apart from the first heat exchange assembly 102.

[0370] In the above technical solution, at least one avoidance channel 200a is formed between the first expansion beam B1 and the box body 101, and all the end portions 11 of the folded position R are passed through the corresponding avoidance channel 200a, so that the end portions 11 extend from the first cavity 101a to the second cavity 101b, which facilitates the assembly of all the end portions 11 of the folded position R with the first expansion beam B1, and facilitates the extension of all the end portions 11 of the folded position R to the second cavity 101b without bending around the first expansion beam B1, which is conducive to simplifying the structure of all the end portions 11 of the folded position R; at the same time, the arrangement of the above avoidance channel 200a can make the interface of the end portion 11 located in the second cavity 101b, that is, the end portion The interface of the end 11 and the battery cell 100 are respectively located in different cavities, so that the box body 101 provides a suitable layout space for the interface of the end 11 to be connected with other components, and facilitates the connection setting of the end 11 with other components. At the same time, the fixed beam 105 can separate the interface position of the end 11 from the battery cell 100, which is beneficial to reduce the impact of heat exchange medium leakage at the interface position of the end 11 on the battery cell 100, and facilitates improving the reliability of the battery cell 100; and the wall surface of the first expansion beam B1 corresponding to the avoidance channel 200a is spaced apart from the first heat exchange component 102, so as to realize the heat insulation setting of the first heat exchange component 102 and the first expansion beam B1.

[0371] Referring to Figures 25 and 28 , in some embodiments, a second recess 101c is formed in the wall of the housing 101. The second recess 101c defines at least a portion of the avoidance passage 200a. The portion of the first heat exchange assembly 102 extending through the avoidance passage 200a is located in the second recess 101c. The fixing beam 105 is aligned with the portion of the housing 101 wall excluding the second recess 101c, or alternatively, the fixing beam 105 is spaced apart from the portion of the housing 101 wall excluding the second recess 101c.

[0372] In the above technical solution, by setting the fixed beam 105 to fit with the wall of the box body 101 except the second recess 101c, for the fixed beam 105 and the above wall of the box body 101, the fixed beam 105 is separated from the wall of the box body 101 at the position where the first heat exchange component 102 is passed through, that is, the fixed beam 105 is separated from the second recess 101c, so as to achieve heat insulation between the fixed beam 105 and the first heat exchange component 102 while avoiding the first heat exchange component 102. At the position where the first heat exchange component 102 is not passed through, the fixed beam 105 is fitted with the wall of the box body 101, that is, the fixed beam 105 is fixed. 05 is zero-contact with the wall of the box body 101, which is convenient for increasing the matching area between the fixed beam 105 and the box body 101, and is beneficial to improving the installation reliability of the fixed beam 105; by setting the fixed beam 105 and the wall of the box body 101 except the second recess 101c to be spaced apart, it is beneficial to further increase the distance between the entire fixed beam 105 and the first heat exchange component 102, and is convenient for improving the thermal resistance between the entire fixed beam 105 and the first heat exchange component 102, reducing the heat or cold transferred from the first heat exchange component 102 to the fixed beam 105, and is convenient for improving the energy utilization rate of the first heat exchange component 102.

[0373] Please refer to Figures 23 to 25. In some embodiments, the battery 200 also includes a thermal insulation member 107, which includes a first thermal insulation portion 1071. The first thermal insulation portion 1071 is arranged between the wall of the fixed beam 105 corresponding to the avoidance channel 200a and the first heat exchange component 102 to fill at least part of the gap between the wall of the fixed beam 105 corresponding to the avoidance channel 200a and the first heat exchange component 102.

[0374] In the above technical solution, by setting the first thermal insulation part 1071 between the wall of the fixed beam 105 corresponding to the avoidance channel 200a and the first heat exchange component 102, the first thermal insulation part 1071 corresponds to the second recess 101c, so as to further increase the thermal resistance between the fixed beam 105 and the first heat exchange component 102 through the thermal insulation part 107.

[0375] Of course, in other embodiments of the present application, the thermal insulation member 107 may not be provided. In this case, thermal insulation can be achieved between the fixed beam 105 and the first heat exchange component 102 by air, and / or, when the first heat exchange component 102 is bonded to the box body 101 by structural adhesive, the above-mentioned structural adhesive will overflow to the side of the first heat exchange component 102 facing the fixed beam 105. The structural adhesive has a certain thermal insulation ability and can also increase the thermal resistance between the first heat exchange component 102 and the fixed beam 105.

[0376] Please refer to FIG. 25 . In some embodiments, the thermal insulation member 107 further includes a second thermal insulation portion 1072 . The second thermal insulation portion 1072 is provided between the first expansion beam B1 and a portion of the wall of the box body 101 excluding the second recess 101 c .

[0377] It is understandable that the second recess 101c can be used to accommodate at least one end 11. For example, the box body 101 is formed with a plurality of spaced second recesses 101c at positions corresponding to the avoidance passage 200a, each second recess 101a accommodating one end 11. There are a plurality of first thermal insulation portions 1071 and a plurality of second thermal insulation portions 1072, and the plurality of first thermal insulation portions 1071 and the plurality of second thermal insulation portions 1072 are alternately arranged along the length direction of the first expansion beam B1.

[0378] In the above scheme, by arranging the second insulation part 1072 between the part of the wall of the box body 101 except the second recess 101c and the first expansion beam B1, it is convenient to sandwich the insulation member 107 between the box body 101 and the first expansion beam B1, and to realize the reliable installation of the insulation member 107 by fixing the first expansion beam B1 to the box body 101, so that the insulation member 107 can provide a relatively flat mating surface for the connection between the box body 101 and the first expansion beam B1, and at the same time it is beneficial to reduce the depth of the second recess 101c and improve the molding convenience of the second recess 101c.

[0379] Please refer to Figure 25. In some embodiments, a first fixing member 1081 is further provided on the first expansion beam B1, and at least a portion of the first fixing member 1081 is located inside the first expansion beam B1; the battery 200 also includes a second fixing member 1082, and the second fixing member 1082 is passed through the box body 101, the second heat insulation part 1072 and the first expansion beam B1, and the second fixing member 1082 is connected to the first fixing member 1081.

[0380] In the above technical solution, by arranging at least a portion of the first fixing member 1081 to be located within the first expansion beam B1, and by allowing the second fixing member 1082 to pass through the housing 101, the second heat insulating portion 1072, and the first expansion beam B1 and be connected to the first fixing member 1081, the housing 101, the heat insulating member 107, and the first expansion beam B1 are fixed in a simple manner, while also achieving reliable installation of the heat insulating member 107. Furthermore, the second fixing member 1082 can be installed along the direction of the heat insulating member 107 toward the first expansion beam B1, thereby providing sufficient operating space during the assembly of the second fixing member 1082 and improving assembly convenience. Furthermore, the second fixing member 1082 is passed through the second heat insulating portion 1072, thereby facilitating the separation of the second fixing member 1082 from the heat exchange tube 1, so that the installation of the second fixing member 1082 will not affect the heat exchange tube 1.

[0381] For example, the first fixing member 1081 is a rivet nut, the second fixing member 1082 is a threaded fastener (such as a bolt), the box body 101 is formed with a first mounting hole 1011d, the second heat insulation portion 1072 is formed with a second mounting hole 1072a, the first expansion beam B1 is formed with a third mounting hole 1050a, the head of the first fixing member 1081 is matched with the second mounting hole 1072a, the first fixing member 1081 is passed through the third mounting hole 1050a so that part of the first fixing member 1081 extends into the first expansion beam B1, and the first The second fixing member 1082 is passed through the first mounting hole 1011d and is threadedly engaged with the first fixing member 1081 or even part of the first expansion beam B1, so that the above-mentioned part of the first fixing member 1081 is deformed to be riveted to the first expansion beam B1, and at the same time, the first fixing member 1081 and the second fixing member 1082 are threadedly connected; it can be understood that the above-mentioned arrangement can achieve sealing of the opening position of the box body 101 through corresponding sealing means, including but not limited to setting a gasket 1083 between the head of the second fixing member 1082 and the box body 101.

[0382] It can be understood that the above-mentioned embodiments of the thermal insulation arrangement of the first expansion beam B1 in this application are applicable to other expansion beams of the battery 200 .

[0383] For example, the battery 200 also includes a second expansion beam B2, which is arranged in the first cavity 101a, and all battery cells 100 are sandwiched between the first expansion beam B1 and the second expansion beam B2. In the direction from the first cavity 101a to the second cavity 101b, the first heat exchange component 102 and the second expansion beam B2 are spaced apart to achieve a thermal insulation arrangement of the first heat exchange component 102 and the second expansion beam B2, that is, the entire first heat exchange component 102 is spaced apart on the side of the second expansion beam B2 facing the second cavity 101b; it can be understood that a thermal insulation component 107 may be provided between the second expansion beam B2 and the wall of the box body 101 where the first heat exchange component 102 is provided, or a thermal insulation component 107 may not be provided.

[0384] For another example, the battery 200 further includes a second expansion beam B2 and a third expansion beam B3. The second expansion beam B2 and the third expansion beam B3 are both provided in the first cavity 101a. The third expansion beam B3 is located between the first expansion beam B1 and the second expansion beam B2. A battery cell 100 is provided between the first expansion beam B1 and the third expansion beam B3, and a battery cell 100 is also provided between the second expansion beam B2 and the third expansion beam B3. Then, a portion of the first heat exchange assembly 102 is provided on opposite sides of the third expansion beam B3. At this time, the third expansion beam B3 An avoidance channel can be formed between the box body 101, and the avoidance channel connects the above-mentioned opposite sides of the third expansion beam B3. For example, the box body 101 forms a third recess 101d, and / or the third expansion beam B3 forms a fourth recess. The third recess 101d and / or the fourth recess constitute an avoidance channel. The first heat exchange component 102 is arranged in the avoidance channel, and the part of the first heat exchange component 102 that is arranged in the avoidance channel is spaced apart from the third expansion beam B3, so that the first heat exchange component 102 and the third expansion beam B3 are thermally insulated.

[0385] For example, the insulation between the first heat exchange assembly 102 and the third expansion beam B3 may be the same as or different from the insulation between the first heat exchange assembly 102 and the fixed beam 105. For example, a third recess 101d is formed in the wall of the housing 101. The third recess 101d defines at least a portion of the escape passage, and the portion of the first heat exchange assembly 102 extending through the escape passage is located within the third recess 101d. Alternatively, the third expansion beam B3 may be spaced from the wall of the housing 101, excluding the third recess 101d.

[0386] Please refer to Figure 8. In some embodiments, the box body 101 includes a first box body 101, the first box body 101 is an integral stamped part and the first box body 101 includes a bottom wall 1011a and a surrounding wall 1011b, the surrounding wall 1011b is arranged around the bottom wall 1011a, and a first heat exchange component 102 is provided between at least one of the bottom wall 1011a and the surrounding wall 1011b and the battery cell 100.

[0387] It can be understood that the surrounding wall 1011b can include multiple side walls connected end to end, and the surrounding wall 1011b and the bottom wall 1011a can cooperate to form a accommodating space, which can be formed as at least part of the internal space of the box body 101; when a first heat exchange component 102 is provided between the surrounding wall 1011b and the battery cell 100, a first heat exchange component 102 can be provided between at least one of the multiple side walls and the battery cell 100.

[0388] In the related art, the bottom wall 1011a and the surrounding wall 1011b of the box body 101 are separate parts (for example, the profile box body 101), and the two are connected by multiple connecting parts to achieve sealing between the bottom wall 1011a and the surrounding wall 1011b. The number of connecting parts is large, even up to more than 100, which makes the assembly of the box body 101 cumbersome and the assembly efficiency low.

[0389] In the above technical solution, by setting the first box body 101 including the bottom wall 1011a and the surrounding wall 1011b as an integral stamped part, the molding of the first box body 101 is facilitated, which is beneficial to reducing the cost of the first box body 101 and making the first box body 101 have good structural strength; at the same time, the structure of the first box body 101 itself realizes the sealing between the bottom wall 1011a and the surrounding wall 1011b, which is beneficial to improving the sealing of the bottom of the first box body 101, thereby saving multiple connecting parts (such as bolts) in the box body 101 for realizing the sealing of the bottom of the first box body 101, saving the connection process of the bottom wall 1011a and the surrounding wall 1011b, and helping to improve the assembly efficiency of the box body 101.

[0390] In a third aspect, an embodiment of the present application provides an electrical device 1000 , comprising the above-mentioned battery 200 , wherein the battery 200 is used to provide electrical energy.

[0391] In the above technical solution, since the electric device 1000 adopts the above-mentioned battery 200 and the battery 200 has good assembly efficiency, it is beneficial to improve the production efficiency of the electric device 1000.

[0392] Please refer to the accompanying drawings again to describe the battery 200 according to a specific embodiment of the present application.

[0393] Example 1

[0394] 3 , 8 , 22 , and 23 , the battery 200 includes a housing 101 and a plurality of battery cells 100 , all of which are disposed within the housing 101 . The battery 200 also includes a first heat exchange assembly 102 , which is disposed within the housing 101 and located between the housing 101 and the battery cells 100 for heat exchange with all of the battery cells 100 . The housing 101 includes a first housing 101 and a second housing 102 . The first housing 101 is a one-piece sheet metal stamped part and includes a bottom wall 1011a and a surrounding wall 1011b . The surrounding wall 1011b is disposed around the bottom wall 1011a , and the first heat exchange assembly 102 is located between the bottom wall 1011a and the battery cells 100 .

[0395] The battery 200 also includes a first expansion beam B1 and a second expansion beam B2 provided in the box body 101. The first expansion beam B1 divides the internal space of the box body 101 into a first chamber 101a and a second chamber 101b. The second expansion beam B2 is provided in the first chamber 101a. All battery cells 100 are provided in the first chamber 101a and are located between the first expansion beam B1 and the second expansion beam B2. An avoidance channel 200a is formed between the first expansion beam B1 and the box body 101. A retracted position R is formed on at least one side of the circumference of the first heat exchange component 102. The first heat exchange component 102 includes a plurality of heat exchange tubes 1, each heat exchange tube 1 having two ends 11. At least two of all the ends 11 of the first heat exchange component 102 extend to the same retracted position R. The retracted positions R correspond one-to-one to the avoidance channels 200a, and all the ends 11 at the retracted positions R are passed through the corresponding avoidance channels 200a so that the ends 11 extend from the first chamber 101a to the second chamber 101b. Among them, the first expansion beam B1 has a first recess 105a, which forms at least a portion of the avoidance channel 200a. Each avoidance channel 200a is respectively provided with a supporting member 106, which is engaged with the corresponding battery cell 100 and has a groove 106b for avoiding the end 11 of the corresponding retracted position R.

[0396] The wall surface of the first expansion beam B1 corresponding to the avoidance channel 200a is spaced apart from the first heat exchange component 102, and a heat insulating member 107 is provided between the first expansion beam B1 and the bottom wall 1011a of the box body 101. The heat insulating member 107 is an integral part and includes a first heat insulating portion 1071 and a second heat insulating portion 1072. The first heat insulating portion 1071 is provided between the wall surface of the first expansion beam B1 corresponding to the avoidance channel 200a and the first heat exchange component 102, and the second heat insulating portion 1072 is provided between the bottom wall 1011a of the box body 101 except the portion corresponding to the avoidance channel 200a and the first expansion beam B1.

[0397] The first heat exchange component 102 includes two heat exchange tubes 1, each heat exchange tube 1 has two ends 11, which are a first end 11a and a second end 11b respectively. The circumferential side of the first heat exchange component 102 includes two sides oppositely arranged along the first direction X1 and two sides oppositely arranged along the second direction X2. The first box body 101 and the second box body 102 are oppositely arranged along the fifth direction X5.

[0398] For example, the first direction X1 is from left to right, the second direction X2 is from back to front, and the fifth direction X5 is from bottom to top. The three directions are perpendicular to each other:

[0399] The two heat exchange tubes 1 of the first heat exchange assembly 102 are spaced apart in the left-right direction. A stowed position R is formed partially on the front side of the first heat exchange assembly 102. All ends 11 of each heat exchange tube 1 extend to this stowed position R. The left-right dimension L1 of the stowed position R is smaller than the left-right dimension L2 of the first heat exchange assembly 102, and further, L1 ≤ L2 / 3. The stowed position R is positioned front-to-back relative to the middle of the heat exchange assembly 110 in the left-right direction. Each heat exchange tube 1 is formed by bending a single tube, with an arc-shaped bend at the bend position. Each heat exchange tube 1 is a flat tube or harmonica tube, and the thickness direction of the heat exchange tube 1 is the X5 direction.

[0400] It can be seen that the retracted position R corresponds to four end portions 11, the spacing c1 between any two adjacent end portions 11 at the retracted position R is smaller than the maximum radial dimension c3 of the outer contour of the cross section of the end portion 11 (i.e., the width of the heat exchange tube 1), and the two second end portions 11b are located between the two first end portions 11a; each heat exchange tube 1 further includes a connecting section 12 connected between the two end portions 11, and the central axes of at least the connecting sections 12 of all heat exchange tubes 1 are located in the same plane to better cooperate with the battery cell 100.

[0401] Each heat exchange tube 1 is configured as a first heat exchange tube 1a. The connecting section 12 of the first heat exchange tube 1a includes a first heat exchange section 121 and a second heat exchange section 122. The second heat exchange section 122 is bent to form a U-shaped region 120. The first heat exchange section 121 is bent and disposed within the U-shaped region of the second heat exchange section 122, and the first heat exchange section 121 is bent and connected to the second heat exchange section 122. The connecting sections 12 of the two heat exchange tubes 1 can be arranged symmetrically about the centerline of the first heat exchange assembly 102, which is perpendicular to the left-right direction.

[0402] The first heat exchange section 121 includes a first heat exchange portion 1211 and a first bending portion 1212. There are multiple first heat exchange portions 1211 and they are arranged at intervals along the first direction. Each second heat exchange portion 1211 extends straight along the second direction. The first bending portion 1212 is arc-shaped and is bent and connected between two adjacent first heat exchange portions 1211, so that the multiple first heat exchange portions 1211 are connected in sequence.

[0403] The second heat exchange section 122 includes a second heat exchange portion 1221, a third heat exchange portion 1222, a fourth heat exchange portion 1223 and a fifth heat exchange portion 1224. The second heat exchange portion 1221 extends along the right circumference of the first heat exchange section 121 (the second heat exchange portion 1221 extends along the second direction), the third heat exchange portion 1222 is connected between the second heat exchange portion 1221 and the first heat exchange section 121, and extends along the rear circumference of the first heat exchange section 121 (the third heat exchange portion 1222 extends along the first direction), a first end of the third heat exchange portion 1222 is connected to the second heat exchange portion 1221 at a substantially 90° angle, a second end of the third heat exchange portion 1222 is connected to the first heat exchange section 121 at a substantially 90° angle, and the fourth heat exchange portion 1223 is connected to the second heat exchange portion 1224. The heat exchange part 1221 is connected and is connected to the second heat exchange part 1221 at an angle of approximately 90°. The fourth heat exchange part 1223 extends along the front circumference of the first heat exchange section 121 (the fourth heat exchange part 1223 extends along the first direction), so that the opening of the U-shaped area 120 formed by the second heat exchange part 1221, the third heat exchange part 1222 and the fourth heat exchange part 1223 is set to the left; the fifth heat exchange part 1224 extends along the left circumference of the first heat exchange section 121 and closes at least part of the opening of the U-shaped area 120 formed by the second heat exchange part 1221, the third heat exchange part 1222 and the fourth heat exchange part 1223. One end of the fifth heat exchange part 1224 is bent and connected to the third heat exchange part 1222, and the other end is connected to the first bending part 1212.

[0404] The first heat exchange tube 1a also includes an eighth heat exchange section 128. The first heat exchange section 12 is connected between the eighth heat exchange section 128 and the second heat exchange section 122, and the eighth heat exchange section 128 is connected to the first heat exchange section 121 at an angle of approximately 90°; the eighth heat exchange section 128 is bent and connected to one of the end portions 11, and the fourth heat exchange portion 1223 is bent and connected to the other end portion 11.

[0405] Example 2

[0406] 5 and 17 , the structure of this embodiment is substantially the same as that of the first embodiment, wherein the same reference numerals are used for the same components, and the only difference is that: one of the two heat exchange tubes 1 of the first heat exchange assembly 102 is configured as a first heat exchange tube 1a, and the other is configured as a second heat exchange tube 1b; two retracted positions R are formed on one side of the first heat exchange assembly 102 in the second direction, and the first end portions 11a of all the heat exchange tubes 1 extend to one of the retracted positions R, and the second end portions 11b of all the heat exchange tubes 1 extend to the other retracted position R.

[0407] The connecting section 12 of the first heat exchange tube 1a includes a first heat exchange section 121 and a second heat exchange section 122. The second heat exchange section 122 is bent to form a U-shaped area 120. The first heat exchange section 121 is bent and arranged in the U-shaped area of ​​the second heat exchange section 122, and the first heat exchange section 121 is bent and connected to the second heat exchange section 122; the first heat exchange section 121 includes a first heat exchange portion 1211 and a first bending portion 1212. There are multiple first heat exchange portions 1211 and they are spaced apart along the first direction. Each second heat exchange portion 1211 extends straight along the second direction. The bending portion 1212 is arc-shaped and is bent and connected between two adjacent first heat exchange portions 1211, so that multiple first heat exchange portions 1211 are connected in sequence; the second heat exchange section 122 includes a second heat exchange portion 1221, a third heat exchange portion 1222, and a fourth heat exchange portion 1223. The second heat exchange portion 1221, the third heat exchange portion 1222, and the fourth heat exchange portion 1223 form a U-shaped area 120, the second heat exchange portion 1221 extends along the first direction, the third heat exchange portion 1222 extends along the second direction, and the fourth heat exchange portion 1223 extends along the second direction.

[0408] At least the connecting section 12 of the second heat exchange tube 1a is arranged in the U-shaped area 120 of the first heat exchange tube 1a. For the second heat exchange tube 1a, its connecting section 12 includes a first heat exchange section 121 and a second heat exchange section 122. The second heat exchange section 122 is bent to form a U-shaped area 120. The first heat exchange section 121 is bent and arranged in the U-shaped area of ​​the second heat exchange section 122, and the first heat exchange section 121 is bent and connected to the second heat exchange section 122; the first heat exchange section 121 includes a first heat exchange portion 1211 and a first bending portion 1212. The first heat exchange portion 1211 is multiple and arranged at intervals along the first direction, and each first heat exchange portion 1211 is arranged at intervals along the first direction. The second heat exchange part 1211 extends straightly along the second direction, and the first bending part 1212 is arc-shaped and bent between two adjacent first heat exchange parts 1211, so that multiple first heat exchange parts 1211 are connected in sequence; the second heat exchange section 122 includes a second heat exchange part 1221, a third heat exchange part 1222, and a fourth heat exchange part 1223. The second heat exchange part 1221, the third heat exchange part 1222, and the fourth heat exchange part 1223 form a U-shaped area 120, the second heat exchange part 1221 extends along the first direction, the third heat exchange part 1222 extends along the second direction, and the fourth heat exchange part 1223 extends along the second direction.

[0409] Example 3

[0410] 7 , the structure of this embodiment is substantially the same as that of the second embodiment, wherein the same components are designated by the same reference numerals, and the only difference is that the three heat exchange tubes 1 of the first heat exchange assembly 102 are respectively the first heat exchange tube 1a, the second heat exchange tube 1b and the third heat exchange tube 1c.

[0411] The connecting section 12 of the first heat exchange tube 1a includes a first heat exchange section 121 and a second heat exchange section 122. The second heat exchange section 122 is bent to form a U-shaped area 120. The first heat exchange section 121 is bent and arranged in the U-shaped area of ​​the second heat exchange section 122, and the first heat exchange section 121 is bent and connected to the second heat exchange section 122; the first heat exchange section 121 includes a first heat exchange portion 1211 and a first bending portion 1212. There are multiple first heat exchange portions 1211 and they are spaced apart along the first direction. Each second heat exchange portion 1211 extends straight along the second direction. The bending portion 1212 is arc-shaped and is bent and connected between two adjacent first heat exchange portions 1211, so that multiple first heat exchange portions 1211 are connected in sequence; the second heat exchange section 122 includes a second heat exchange portion 1221, a third heat exchange portion 1222, and a fourth heat exchange portion 1223. The second heat exchange portion 1221, the third heat exchange portion 1222, and the fourth heat exchange portion 1223 form a U-shaped area 120, the second heat exchange portion 1221 extends along the first direction, the third heat exchange portion 1222 extends along the second direction, and the fourth heat exchange portion 1223 extends along the second direction.

[0412] At least the connecting section 12 of the second heat exchange tube 1a is disposed within the U-shaped region 120 of the first heat exchange tube 1a. For the second heat exchange tube 1a, its connecting section 12 includes a third heat exchange section 123, a third heat exchange section 124, and a fifth heat exchange section 125. The third heat exchange section 123 and the fourth heat exchange section 124 are each bent to form a U-shaped region 120. The third heat exchange section 123 and the fourth heat exchange section 124 are bent and connected. The third heat exchange section 123 is disposed within the U-shaped region 120 of the fourth heat exchange section 124. At least a portion of the first heat exchange section 121 of the first heat exchange tube 1a is disposed within the U-shaped region 120 of the third heat exchange section 123. The three side edges corresponding to the U-shaped region 120 of the third heat exchange section 123 are parallel to the three side edges corresponding to the U-shaped region 120 of the fourth heat exchange section 124. The fifth heat exchange section 125 is connected to one end of the third heat exchange section 123 away from the fourth heat exchange section 124 and includes a sixth heat exchange part 1251 and a second bending part 1252. There are multiple sixth heat exchange parts 1251 and they are arranged at intervals along the first direction. Each sixth heat exchange part 1251 extends along the second direction. The second bending part 1252 is arc-shaped and is bent and connected between two adjacent sixth heat exchange parts 1251, so that multiple sixth heat exchange parts 1251 are connected in sequence.

[0413] In addition, it should be noted that the various specific technical features described in the above-mentioned specific embodiments can be combined in any suitable manner unless they are contradictory. In order to avoid unnecessary repetition, the present application will no longer describe various possible combinations separately. In addition, the various different embodiments of the present application can also be combined in any manner, as long as they do not violate the ideas of the present application, they should also be regarded as the contents disclosed in the present application. In other words, the embodiments in the present application and the features in the embodiments can be combined with each other unless they conflict.

[0414] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A heat exchange component, wherein: Used for heat exchange with battery cells, including: A plurality of heat exchange tubes, each of the heat exchange tubes having two ends, and when one of the two ends is used for liquid inlet, the other end is used for liquid outlet; A portion of at least one side of the circumference of the heat exchange component forms a retracted position, and at least one end portion of each heat exchange tube extends to the retracted position.

2. The heat exchange assembly according to claim 1, wherein: The size of the folded position on the corresponding side of the heat exchange component is less than or equal to 1 / 3 of the size of the corresponding side of the heat exchange component; optionally, the size of the folded position on the corresponding side of the heat exchange component is less than or equal to 1 / 5 of the size of the corresponding side of the heat exchange component.

3. The heat exchange assembly according to claim 1 or 2, wherein: All of the folded positions of the heat exchange component are located on one of the circumferential sides of the heat exchange component.

4. The heat exchange assembly according to claim 3, wherein: The plurality of heat exchange tubes are arranged at intervals or arranged around each other.

5. The heat exchange assembly according to any one of claims 1 to 4, wherein: The distance between any two adjacent ends at the retracted position is smaller than the maximum radial dimension of the outer contour of the cross section of the end. There are one or more retracted positions, and both ends of the heat exchange tube extend to the same retracted position; or There are multiple folding positions, and the two ends of each heat exchange tube extend to different folding positions respectively.

6. The heat exchange assembly according to claim 5, wherein: The retracted position is located between the corresponding ends of the heat exchange component; or, At least a portion of the retracted position is disposed beyond a corresponding end of the heat exchange component.

7. The heat exchange assembly according to claim 6, wherein: The folded position is one, The folded position is arranged opposite to the middle of the corresponding side of the heat exchange component; or, The folded position is arranged opposite to an end of a corresponding side of the heat exchange component.

8. The heat exchange assembly according to claim 6 or 7, wherein: The plurality of heat exchange tubes are arranged at intervals along a first direction, and the two heat exchange tubes at both ends are arranged symmetrically about a center line of the heat exchange component that is perpendicular to the first direction.

9. The heat exchange assembly according to any one of claims 5 to 8, wherein: The two ends of the heat exchange tube are respectively a first end and a second end, one of the first end and the second end is used for liquid inlet, and the other is used for liquid outlet, all the second ends of two adjacent heat exchange tubes spaced apart along the first direction are located between the two first ends of the two adjacent heat exchange tubes, and all the first ends and all the second ends of two adjacent heat exchange tubes extend to the same retracted position.

10. The heat exchange assembly according to any one of claims 5 to 8, wherein: The two ends of the heat exchange tube are respectively a first end and a second end, the first end is used for liquid inlet, and the second end is used for liquid outlet, and the multiple retracted positions include a first retracted position and a second retracted position. The first end portion of each heat exchange tube extends to the first retracted position, and the second end portion of each heat exchange tube extends to the second retracted position; or, The first end of at least one heat exchange tube and the second end of at least one heat exchange tube both extend to the first retracted position, and the second end of at least one heat exchange tube and the first end of at least one heat exchange tube both extend to the second retracted position.

11. The heat exchange assembly according to any one of claims 1 to 10, wherein: The heat exchange assembly further comprises at least one current collector, and the current collector corresponds to the folded positions one by one; The current collector connects to the interfaces of the multiple ends corresponding to the retracted positions, or the current collector separates the interfaces of the multiple ends corresponding to the retracted positions into multiple independent flow channels.

12. The heat exchange assembly according to any one of claims 1 to 11, wherein: Each of the heat exchange tubes further has a connecting section connected between the two end portions, and central axes of at least the connecting sections of all the heat exchange tubes are located in the same plane.

13. The heat exchange assembly according to any one of claims 1 to 12, wherein: The heat exchange tube is a flat tube or a harmonica tube.

14. The heat exchange assembly according to any one of claims 1 to 13, wherein: Each of the heat exchange tubes also has a connecting section connected between the two end portions. At least one of the heat exchange tubes is configured as a first heat exchange tube. The connecting section of the first heat exchange tube includes a first heat exchange section and a second heat exchange section. The second heat exchange section is bent to form a U-shaped area. The first heat exchange section is bent within the U-shaped area and is connected to the second heat exchange section in a bent manner.

15. The heat exchange assembly according to claim 14, wherein: The first heat exchange section includes a first heat exchange portion and a first bending portion. There are multiple first heat exchange portions and they are arranged at intervals along the first direction. Each first heat exchange portion extends along the second direction. The first bending portion is arc-shaped and is bent and connected between two adjacent first heat exchange portions so that multiple first heat exchange portions are connected in sequence. The second direction is set at an angle to the first direction.

16. The heat exchange assembly according to claim 14 or 15, wherein: The second heat exchange section includes a second heat exchange part, a third heat exchange part and a fourth heat exchange part. The second heat exchange part extends along the first side circumference of the first heat exchange section. The third heat exchange part is connected between the second heat exchange part and the first heat exchange section and extends along the second side circumference of the first heat exchange section. The first end of the third heat exchange part is connected to the second heat exchange part at an angle, and the second end of the third heat exchange part is connected to the first heat exchange section at an angle. The fourth heat exchange part is in communication with the second heat exchange part and is connected to the second heat exchange part at an angle. The fourth heat exchange part extends along the third side circumference of the first heat exchange section.

17. The heat exchange assembly according to claim 16, wherein: The first heat exchange section includes a plurality of first heat exchange parts, and the plurality of first heat exchange parts are bent and connected in sequence in the first direction; wherein, The second heat exchange portion is located on one side of the plurality of first heat exchange portions along the first direction, the third heat exchange portion is located on one side of the plurality of first heat exchange portions along the second direction, and the first direction and the second direction are arranged at an angle; a first end of the third heat exchange portion is connected to one end of the second heat exchange portion along the second direction, a second end of the third heat exchange portion is connected to one of the plurality of first heat exchange portions farthest from the second heat exchange portion along the first direction, the fourth heat exchange portion is located on the other side of the plurality of first heat exchange portions along the second direction, one end of the fourth heat exchange portion is connected to one end of the second heat exchange portion away from the third heat exchange portion, and the other end of the fourth heat exchange portion extends along the first direction toward a direction away from the second heat exchange portion; or, The second heat exchange section is located on one side of the multiple first heat exchange sections along the second direction, and the third heat exchange section is located on one side of the multiple first heat exchange sections along the first direction, and the first direction and the second direction are arranged at an angle; the first end of the third heat exchange section is connected to one end of the second heat exchange section along the first direction, and the second end of the third heat exchange section is connected to the one of the multiple first heat exchange sections that is closest to the third heat exchange section along the first direction; the fourth heat exchange section is located on the other side of the multiple first heat exchange sections along the first direction, one end of the fourth heat exchange section is connected to one end of the second heat exchange section away from the third heat exchange section, and the other end of the fourth heat exchange section extends along the second direction toward a direction away from the second heat exchange section.

18. The heat exchange assembly according to claim 16 or 17, wherein: The second heat exchange section further includes: a fifth heat exchange portion, which extends along the fourth side periphery of the first heat exchange section and closes at least a portion of the opening of the U-shaped area formed by the second heat exchange portion, the third heat exchange portion and the fourth heat exchange portion.

19. The heat exchange assembly according to any one of claims 14 to 18, wherein: The first heat exchange section is connected to the downstream of the second heat exchange section along the fluid flow direction; or, the first heat exchange tube is configured as follows: when heating the battery cell, the first heat exchange section is connected to the downstream of the second heat exchange section along the fluid flow direction; when cooling the battery cell, the first heat exchange section is connected to the upstream of the second heat exchange section along the fluid flow direction.

20. The heat exchange assembly according to any one of claims 14 to 19, wherein: At least one of the heat exchange tubes is configured as a second heat exchange tube, the second heat exchange tube and the first heat exchange tube are arranged on the same side of the battery cell, the connecting section of the second heat exchange tube is bent and arranged in the U-shaped area of the first heat exchange tube, and the connecting section of the second heat exchange tube and the connecting section of the first heat exchange tube have the same or different bending structures.

21. The heat exchange assembly according to claim 20, wherein: The connecting section of the second heat exchange tube includes a U-shaped area with the same structure as the connecting section of the first heat exchange tube, and at least a portion of the first heat exchange section of the connecting section of the first heat exchange tube is arranged in the U-shaped area of the second heat exchange tube.

22. The heat exchange assembly according to claim 20 or 21, wherein: The connecting section of the second heat exchange tube includes a third heat exchange section and a fourth heat exchange section that are bent and connected. The third heat exchange section and the fourth heat exchange section are respectively bent to form the U-shaped area. The third heat exchange section is arranged in the U-shaped area of the fourth heat exchange section. At least part of the first heat exchange section of the first heat exchange tube is arranged in the U-shaped area of the third heat exchange section.

23. The heat exchange assembly according to claim 22, wherein: The connecting section of the second heat exchange tube further includes a fifth heat exchange section, the fifth heat exchange section includes a sixth heat exchange portion and a second bent portion, the sixth heat exchange portion is multiple and arranged at intervals along the third direction, each sixth heat exchange portion extends along the fourth direction, the second bent portion is arc-shaped and bent and connected between two adjacent sixth heat exchange portions, so that the multiple sixth heat exchange portions are connected in sequence, and the fourth direction is arranged at an angle to the third direction. Wherein, the fifth heat exchange section is provided between the third heat exchange section and the fourth heat exchange section, and / or the fifth heat exchange section is provided between the third heat exchange section and the corresponding end section.

24. The heat exchange assembly according to any one of claims 20 to 23, wherein: At least one of the heat exchange tubes is configured as a third heat exchange tube, and the communicating section of the third heat exchange tube is bent and disposed in the U-shaped region of the second heat exchange tube.

25. A battery, wherein: It comprises a box body and a battery cell, wherein the battery cell is arranged in the box body; The battery further includes at least one of a first heat exchange component, a second heat exchange component, and a third heat exchange component. The at least one of the first heat exchange component, the second heat exchange component, and the third heat exchange component is used for heat exchange with the battery cell and is a heat exchange component according to any one of claims 1 to 24. The first heat exchange component is arranged in the box and between the battery cell and the box. The second heat exchange component is arranged outside the box. The third heat exchange component is arranged between two adjacent battery cells. between.

26. The battery according to claim 25, wherein The battery includes a first heat exchange component and a fixed beam. The fixed beam is arranged in the box body and divides the internal space of the box body into a first cavity and a second cavity. A portion of the first heat exchange component and the battery cell are both arranged in the first cavity. At least one avoidance channel is formed between the fixed beam and the box body. All the ends of the folded position are passed through the corresponding avoidance channels so that the ends extend from the first cavity to the second cavity.

27. The battery according to claim 26, wherein The fixing beam has a first recess, and / or the wall of the box body has a second recess, and the first recess and / or the second recess form the avoidance channel.

28. The battery according to claim 26 or 27, wherein Parts of all the end portions at the folded position located on opposite sides of the fixed beam are connected at an obtuse angle.

29. The battery according to any one of claims 26 to 28, wherein The first heat exchange assembly further includes at least one current collector, the current collector being located in the second cavity and corresponding one-to-one to the retracted positions; The current collector is connected to the interfaces of the multiple ends corresponding to the retracted positions, or the current collector separates the interfaces of the multiple ends corresponding to the retracted positions into multiple independent flow channels.

30. The battery according to claim 29, wherein The avoidance channel is configured to allow the corresponding current collector to pass through.

31. The battery according to any one of claims 27 to 30, wherein The fixed beam is configured as a first expansion beam and has a first mating surface that abuts against the battery cell. The battery further comprises: A carrier is arranged in the avoidance channel and has a second mating surface that stops against the battery cell, the first mating surface is arranged flush with the second mating surface, and the carrier has a groove that avoids the end corresponding to the folded position, and the groove runs through the outer peripheral side of the carrier.

32. The battery according to claim 31, wherein A stopper that abuts against the supporting member is formed on at least one of the fixed beam and the box body to limit movement of the supporting member in a direction from the first cavity toward the second cavity.

33. The battery according to claim 32, wherein The stopper is formed on one side of the fixed beam facing the first cavity at the position of the avoidance channel; and / or, A stop step protruding toward the fixing beam is formed on the wall of the box body where the first heat exchange assembly is disposed, and the stop step serves as a stop portion.

34. The battery according to claim 33, wherein In a cross section of the fixed beam, the stop portion on the fixed beam is formed into an arc-shaped structure, and the cross section of the fixed beam is perpendicular to a length direction of the fixed beam.

35. The battery according to any one of claims 31 to 34, wherein The carrier comprises: A plate body, wherein a surface on one side of the thickness of the plate body is formed as the second mating surface, and the slots penetrate through both sides of the thickness of the plate body; A matching portion is formed at an outer edge of the plate body and is abutted against the fixing beam to limit movement of the bearing member from the first cavity toward the second cavity.

36. The battery according to claim 35, wherein The matching portion has a first surface and a second surface, the first surface is formed as an arc-shaped surface recessed toward the second surface and matched with the fixing beam, and the second surface is connected to the first surface and is arranged flush with the second matching surface.

37. The battery according to claim 35 or 36, wherein At least one latch hole is formed on the fixing beam, and the bearing member further comprises: At least one hook portion is formed at the outer edge of the plate body and is located on a side of the plate body away from the second mating surface, and the hook portion is locked in the corresponding locking hole.

38. The battery according to any one of claims 35 to 37, wherein The carrier also includes: At least one supporting portion is provided on a side of the plate portion away from the second mating surface and is arranged to avoid the first heat exchange component, and the supporting portion is in a stop-fitting relationship with the box body.

39. The battery according to claim 38, wherein The width of the support portion in the thickness direction of the plate portion increases from the matching portion toward the first heat exchange component.

40. The battery according to any one of claims 31 to 39, wherein The bearing member is provided between the first heat exchange component and the fixed beam. The thermal conductivity of the bearing member is lower than the thermal conductivity of the fixed beam; and / or, The carrier is spaced apart from the first heat exchange component.

41. The battery according to any one of claims 31 to 40, wherein The strength of the material of the bearing member is at least 0.8 times the strength of the material of the fixing beam.

42. The battery according to any one of claims 31 to 41, wherein The first heat exchange component is arranged on the bottom wall of the box body, and the end of the second mating surface facing the first heat exchange component is arranged flush with the end of the battery cell facing the corresponding first heat exchange component, or, the end of the second mating surface facing the first heat exchange component is arranged adjacent to the first heat exchange component compared to the end of the battery cell facing the corresponding first heat exchange component.

43. The battery according to any one of claims 25 to 42, wherein The battery includes a first heat exchange component and a fixed beam. The fixed beam is configured as a first expansion beam and is disposed in the box. The first heat exchange component is spaced apart from the fixed beam so as to be thermally insulated from the fixed beam.

44. The battery according to claim 43, wherein The fixed beam divides the internal space of the box into a first cavity and a second cavity. A portion of the first heat exchange assembly and the battery cell are both arranged in the first cavity. At least one avoidance channel is formed between the fixed beam and the box. All the ends at the retracted position are passed through the corresponding avoidance channels so that the ends extend from the first cavity to the second cavity. The wall surface of the fixed beam corresponding to the avoidance channel is spaced apart from the first heat exchange assembly.

45. The battery according to claim 44, wherein The wall of the box body is formed with a second recessed portion, the second recessed portion constructs at least a portion of the avoidance channel, and the portion of the first heat exchange component that passes through the avoidance channel is arranged in the second recessed portion. The fixing beam is in contact with the wall of the box except the second recess; or The fixing beam is spaced apart from a portion of the wall of the box body except the second recess.

46. The battery according to claim 45, wherein The battery further comprises: The heat insulating member includes a first heat insulating portion, and the first heat insulating portion is arranged between the wall surface of the fixed beam corresponding to the avoidance channel and the first heat exchange component.

47. The battery according to claim 46, wherein The heat insulating member further includes a second heat insulating portion provided between a portion of the wall of the box body excluding the second recess and the fixing beam.

48. The battery according to claim 47, wherein The fixed beam is further provided with a first fixing member, at least a portion of which is located inside the fixed beam. The battery further includes a second fixing member, which is arranged through the box body, the second heat insulation part and the fixing beam and is connected to the first fixing member.

49. The battery according to any one of claims 25 to 48, wherein The box body includes a first box body, which is an integral stamped part and includes a bottom wall and a surrounding wall. The surrounding wall is arranged around the bottom wall, and a first heat exchange component is provided between at least one of the bottom wall and the surrounding wall and the battery cell.

50. An electrical device, wherein: Comprising a battery according to any one of claims 25-49.

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