Battery and electrical device

Abstract

A battery (1000) and an electrical device. The battery (1000) comprises a box body (300), a battery cell (201), and a heat exchange member (100). The box body (300) comprises a box main body (301), the box main body (301) having an accommodating cavity (3011), and a groove (3014) being formed in a wall body of the box main body (301). The battery cell (201) is disposed in the accommodating cavity (3011). The heat exchange member (100) is at least partially embedded in the groove (3014) and attached to the wall body, and is used for heat exchange with the battery cell (201).

Description

Batteries and electrical equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is based on the Chinese patent application with application number 202410172517.2 and application date of February 6, 2024, and claims the priority of the Chinese patent application. The entire content of the 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 battery and an electrical device. Background Art

[0004] New energy vehicles have experienced rapid growth in recent years. Batteries, as the power source of electric vehicles, play an irreplaceable and important role. Currently, efforts to reduce costs and increase efficiency often come at the expense of battery housing strength, leaving the overall reliability of batteries in need of further improvement.

[0005] Application Contents

[0006] The embodiments of the present application provide a battery and an electrical device, which are beneficial to improving the reliability of the battery.

[0007] In a first aspect, an embodiment of the present application provides a battery, comprising a case, a battery cell and a heat exchanger, wherein the case comprises a case body, the case body having a receiving cavity, and a wall of the case body forming a groove; the battery cell is arranged in the receiving cavity; at least a portion of the heat exchanger is embedded in the groove and adheres to the wall for heat exchange with the battery cell.

[0008] In the above technical solution, on the one hand, after the battery case is provided with grooves, the concave-convex structure of the case itself improves the strength of the case. At the same time, the heat exchanger is filled in the groove structure of the case, and the heat exchanger can act as a reinforcement of the case to further improve the strength of the case and thus improve the reliability of the battery. On the other hand, the heat exchanger is embedded in the groove, occupying the space of the case, so that the two share part of the space, making the battery structure more compact and reliable, and also improving the volume energy density of the battery, and further improving the reliability of the battery.

[0009] In some embodiments, the heat exchange element is completely accommodated in the groove, and the upper surface of the heat exchange element along the thickness direction is flush with the notch of the groove.

[0010] In the above technical solution, by making the heat exchange element completely accommodated in the groove, the heat exchange element can be better protected, and the part of the heat exchange element not accommodated in the groove can be prevented from being squeezed and causing damage to the heat exchange element. In this way, the protected heat exchange element can more reliably exchange heat with the battery cell, and the heat exchange efficiency of the battery cell can be guaranteed; further, by making the upper surface of the heat exchange element in the thickness direction flush with the notch of the groove, the volume of the heat exchange element can be better increased while protecting the heat exchange element, which can increase the heat exchange rate between the heat exchange element and the battery cell, thereby improving the heat exchange effect between the heat exchange element and the battery cell, and since the upper surface of the heat exchange element in the thickness direction is flush with the notch of the groove, the wall of the box body is also smoother, so that the wall of the box body accommodating the heat exchange element is more beautiful, and the battery cell is also more stable when placed in the accommodating cavity.

[0011] In some embodiments, the box body includes: a box body, which is surrounded by multiple box walls, at least one of the multiple box walls forms a groove, the groove is located on the inner side of the box wall close to the accommodating cavity and / or the outer side away from the accommodating cavity, and when the groove is located on the inner side, the groove is connected to the accommodating cavity.

[0012] In the above technical solution, on the one hand, by setting the groove on the box wall of the box body, the structural strength of the box body can be better improved, and after the heat exchanger is embedded in the groove of the box wall, the structural strength of the box body can be further improved. When the battery encounters a side collision, the box body can better protect the battery cells in the box body. On the other hand, the heat exchanger is embedded in the groove of the box wall, which can better dissipate heat for the battery cells adjacent to the box wall. Moreover, after the heat exchanger absorbs the heat of the battery cells, it can be better transferred to the box wall, and the box wall can also better transfer the heat to the external space. In this way, the heat is continuously transferred toward the box wall, which can improve the heat exchange effect on the battery cells.

[0013] In some embodiments, the box body includes a bottom plate and multiple side panels arranged around the periphery of the bottom plate and connected end to end in sequence, a groove is formed on the bottom plate, and the box body is an integral stamped part, or, multiple side panels are profile frames, and the bottom plate is an integral stamped part.

[0014] In the above technical solution, two different box body structures are constructed. One box body structure is that the box body is an integrated stamped part to improve the overall structural strength of the box body, and the structural strength of the bottom plate is improved by forming a groove on the bottom plate and a heat exchanger embedded in the groove. The structural strength of the box body can be greatly improved, and the battery cells in the box body can be better protected. The other box body structure is that the side panels are profile frames, which can better improve the circumferential structural strength of the box body, and further improve the structural strength of the bottom plate by forming a groove on the bottom plate and a heat exchanger embedded in the groove. In addition, the above two different box body structures have the advantages of simple structure and low production cost.

[0015] In some embodiments, the box body includes: a box body, which is a semi-enclosed structure with an opening at one end; a cover plate, connected to the box body, closing the opening, a groove formed on the cover plate and the groove is located on the inner side of the cover plate close to the accommodating cavity or on the outer side away from the accommodating cavity.

[0016] In the above technical solution, the cover plate with grooves and the heat exchange element embedded in the grooves can better improve the structural strength of the cover plate, and the heat exchange efficiency of the top of the battery cell can also be better improved by the heat exchange element arranged in the grooves.

[0017] In some embodiments, the cover plate is a one-piece stamped and formed part.

[0018] In the above technical solution, the cover plate is simple and convenient to process, and the shape of the groove can be designed according to actual conditions, with good flexibility. The integrally stamped groove has a good sealing effect and can better protect the heat exchange component.

[0019] In some embodiments, the box body includes a bottom plate and a plurality of side plates arranged around the bottom plate and connected end to end in sequence. The side plates and the bottom plate are made of the same material and are formed separately and welded together.

[0020] In the above technical solution, the side panels and the bottom panel are made of the same material. When the side panels and the bottom panel are welded, the welding effect is good and the structural strength after welding is high. By increasing the connection strength between the side panels and the bottom panel, the structural strength of the box body can be improved.

[0021] In some embodiments, the heat exchange element includes at least one heat exchange tube. When there are multiple heat exchange tubes, a heat exchange channel is defined on the inner side of each heat exchange tube.

[0022] In the above technical solution, the heat exchange tube has a simple structure and low production cost, and the shape of the heat exchange tube can be well changed. Therefore, the heat exchange tube can be well bent to better arrange the heat exchange flow channel in the battery. In addition, the heat exchange tube has good structural strength. After the heat exchange tube is embedded in the wall, the heat exchange tube can better improve the structural strength of the wall.

[0023] In some embodiments, the heat exchange tube is formed by bending a single tube. Optionally, the heat exchange tube is bent in an arc shape at the bending position.

[0024] In the above technical solution, on the one hand, the heat exchange tubes can be bent according to the actual heat dissipation requirements to construct a heat exchange tube layout with different densities or directions of the heat exchange tubes, so that the entire heat exchange area has multiple areas with different heat exchange effects, so that the heat exchange element has different heat exchange effects for different areas, improving the heat exchange flexibility of the heat exchange element. On the other hand, the different bending states of the heat exchange tubes can also better adjust the flow rate and pressure of the fluid in the heat exchange flow channel, so that the fluid can more fully absorb the heat of the battery cell, thereby improving the heat dissipation effect of the battery cell. By setting the heat exchange tubes to bend in an arc at the bending position, the flow resistance of the fluid can be reduced, the pressure drop can be reduced, and the flow rate of the heat exchange fluid in the heat exchange flow channel can be increased, thereby increasing the heat exchange efficiency of the heat exchange element.

[0025] In some embodiments, the groove is loosely fitted with the heat exchange tube and extends along the length of the heat exchange tube.

[0026] In the above technical solution, the heat exchange tube is easy to disassemble and assemble by making the groove and the clearance between the heat exchange tube match, which can improve the assembly efficiency of the heat exchange tube on the one hand, and improve the replacement or maintenance efficiency of the heat exchange tube on the other hand; by making the groove extend along the length direction of the heat exchange tube, the shape of the groove is the same as the shape of the heat exchange tube, so that after the heat exchange tube is assembled into the groove, the groove can better limit the position of the heat exchange tube, making it difficult for the heat exchange tube to move or shake, and the position of the heat exchange tube is relatively stable, which can better dissipate heat for the battery cell.

[0027] In some embodiments, the heat exchange tube is a flat tube or a harmonica tube.

[0028] In the above technical solution, by providing a flat tube or a harmonica tube with a relatively small thickness, the heat exchange tube can be better embedded in the wall of the box body, which is not easy to increase the thickness of the wall and can also improve the structural strength of the wall. Moreover, the flat tube or the harmonica tube has a simple structure and low production cost, which can better reduce the production cost of the battery.

[0029] In some embodiments, the box body further includes: a beam body, the beam body is arranged in the box body, and a channel allowing the heat exchange tube to pass through is constructed between the beam body and the box body.

[0030] In the above technical solution, a beam is provided in the box body, and a channel is constructed between the beam and the box body to allow the heat exchange tube to pass through, so that the heat exchange tube is connected to the external water pipe to form a cooling circuit.

[0031] In some embodiments, the beam body has a first recess, and / or the box body has a second recess, and the first recess and / or the second recess configure a channel.

[0032] In the above technical solution, a channel allowing the heat exchange tube to pass through can be constructed between the beam body and the box body according to actual needs, so as to facilitate the communication between the heat exchange tube and the external water pipe to form a cooling circuit.

[0033] In some embodiments, the beam body is a hollow beam, and a portion of the beam body protrudes toward the inside of the hollow beam to form a first recess.

[0034] In the above technical solution, by setting the beam body as a hollow beam, the weight of the beam body can be reduced, and thus the weight of the battery can be reduced. Part of the beam body protrudes toward the inside of the hollow beam to form a first recess. The processing method is simple and the production cost is low. The constructed first recess has a stable structure and is not easy to cause pressure on the heat exchange tube, thereby allowing the fluid to enter and exit the heat exchange tube smoothly.

[0035] In some embodiments, the beam body is an expansion beam that can expand or contract along the second direction, or the beam body is a non-metallic beam body.

[0036] In the above technical solution, by setting the beam body as an expansion beam, installation space can be provided for the volume change of the battery cell due to thermal expansion and contraction; by making the beam body a non-metallic beam body, the weight of the beam body can be reduced, thereby reducing the weight of the battery, and it can also be better insulated from the battery cell.

[0037] In some embodiments, the heat exchange element includes a first heat exchange channel, the first heat exchange channel 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.

[0038] In the above technical solution, since the battery cells arranged on the periphery are closer to the side wall of the box body than the internal battery cells, the battery cells on the periphery of the battery can dissipate heat more easily through the side wall or end plate and other structures of the battery, and are less affected by the heat dissipation of the adjacent battery cells, while the battery cells located inside have difficulty in dissipating heat and are more affected by the heat dissipation of the adjacent battery cells. In this way, the heat dissipation conditions of the battery cells at different positions of the battery are different, resulting in a relatively uneven temperature distribution between the peripheral battery cells and the internal battery cells in the battery after operation, which makes the battery less stable during operation and reduces the battery performance. Attenuation is prone to occur; in view of this, the present application bends the second heat exchange section to form a U-shaped area, and the first heat exchange section is bent and arranged in the U-shaped area. When the heat exchange component of this embodiment is used to exchange heat with the battery assembly, the U-shaped area formed by the outer second heat exchange section can be opposite to the outer battery cells of the battery, and the first heat exchange section in the U-shaped area can be opposite to the internal battery cells, so that the heat exchange component can make up 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 battery cells outside the battery assembly and the battery cells inside the battery assembly tend to be consistent, thereby improving the temperature uniformity of the battery, thereby improving the service life of the battery to a certain extent.

[0039] In some embodiments, the second heat exchange section is located at the outermost side of the first heat exchange channel in the circumferential direction.

[0040] In the above technical solution, by arranging the second heat exchange section at the outermost side of the circumference of the first heat exchange channel, the second heat exchange section can exchange heat on the outer circumference of the battery assembly, which is beneficial to improving the temperature difference of the battery assembly in different environments and improving the service life of the battery assembly to a certain extent.

[0041] In some embodiments, the first heat exchange section and the second heat exchange section are bent in the same plane.

[0042] In the above technical solution, by setting the first heat exchange section and the second heat exchange section to bend in the same plane, the first heat exchange channel can exchange heat for the battery in the same plane. As a result, the structure of the first heat exchange channel can be simplified, the production difficulty of the first heat exchange channel can be reduced, and at the same time, the space occupied by the first heat exchange channel can be reduced, thereby improving the volume energy density 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; or, the heat exchange element is configured as follows: when heating the battery assembly of the battery, 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 assembly of the battery, 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 configuring the first heat exchange section to be connected downstream of the second heat exchange section along the direction of fluid flow, the first heat exchange channel can preferentially exchange heat along the outer circumference of the battery, thereby improving the temperature difference between the battery and different environments, thereby increasing the battery life to a certain extent. By configuring the heat exchange component so that when heating the battery pack, the first heat exchange section is connected downstream of the second heat exchange section along the direction of fluid flow; when cooling the battery pack, the first heat exchange section is connected upstream of the second heat exchange section along the direction of fluid flow, the heat exchange effect on the battery can be further improved, thereby improving the temperature uniformity of the battery pack.

[0045] In some embodiments, the heat exchange element has one or more heat exchange channels. When the number of heat exchange channels is multiple, the multiple heat exchange channels are arranged at intervals along the first direction, or arranged around each other, at least one heat exchange channel is formed as a first heat exchange channel, and multiple heat exchange channels are arranged in parallel.

[0046] In the above technical solution, by providing a heat exchange element with one or more heat exchange channels, and by arranging the multiple heat exchange channels at intervals or around each other along the first direction, the diversity of the heat exchange channels can be increased, thereby improving the adaptability of the heat exchange element, enabling it to meet different battery requirements, and thereby improving the market competitiveness of the battery; at the same time, arranging the multiple heat exchange channels in parallel can enable the multiple heat exchange channels to exchange heat simultaneously, thereby reducing the heat exchange time of the heat exchange element and improving the heat exchange efficiency. In some embodiments, the multiple heat exchange channels are arranged at intervals along the first direction, and the two heat exchange channels at both ends of the first direction are both first heat exchange channels; and the two first heat exchange channels are arranged symmetrically about the center line of the heat exchange element along the second direction, wherein the second direction is arranged at an angle to the first direction.

[0047] In the above technical solution, by setting up two symmetrically arranged first heat exchange channels, liquid can be fed into both sides at the same time, the liquid inlet flow rate is increased, the length of a single heat exchange channel is shortened, and the pressure drop in a single heat exchange channel is reduced, thereby improving the heat exchange efficiency.

[0048] In some embodiments, the plurality of heat exchange channels are symmetrically arranged about a center line of the heat exchange element along the second direction.

[0049] In the above technical solution, by setting up multiple heat exchange channels symmetrically arranged about the center line of the heat exchange element along the second direction, the multiple heat exchange channels can synchronously exchange heat with the battery assembly to improve the heat exchange efficiency. At the same time, it can also improve the temperature consistency of the two symmetrically arranged heat exchange areas of the battery assembly and the heat exchange element, thereby further improving the temperature uniformity effect of the battery assembly.

[0050] In some embodiments, the multiple heat exchange channels further include: at least one second heat exchange channel, the second heat exchange channel being arranged between the two first heat exchange channels, wherein the structure of any second heat exchange channel is the same as or different from that of the first heat exchange channel.

[0051] In the above technical solution, by providing at least one second heat exchange channel, the diversity of the heat exchange channel arrangement can be increased, so that the heat exchange element can better exchange heat with the battery assembly, thereby improving the heat exchange effect of the heat exchange element.

[0052] In some embodiments, the second heat exchange channel includes a plurality of fourth heat exchange segments, which are sequentially connected, wherein the fourth heat exchange segments extend along the second direction, and the plurality of fourth heat exchange segments are spaced apart in the first direction.

[0053] In the above technical solution, by setting the second heat exchange channel to include multiple fourth heat exchange sections connected in sequence, the structural complexity of the second heat exchange channel can be reduced, and the production cost of the second heat exchange channel can be reduced, thereby reducing the production cost of the heat exchange component.

[0054] In some embodiments, the heat exchange element has multiple heat exchange channels, and the multiple heat exchange channels include a first heat exchange channel and at least one third heat exchange channel. The third heat exchange channel is bent in the U-shaped area of ​​the first heat exchange channel, and the first heat exchange channel and the third heat exchange channel are bent in the same plane. The bending structures of the first heat exchange channel and the third heat exchange channel are the same or different.

[0055] In the above technical solution, by setting up multiple heat exchange channels, the diversity of the heat exchange channels can be increased, so that the arrangement of the heat exchange channels can be designed according to the cooling requirements of the battery, thereby further increasing the heat exchange effect of the heat exchange component and improving the temperature uniformity of the battery.

[0056] In some embodiments, the third heat exchange channel includes a U-shaped region with the same structure as the first heat exchange channel, and at least a portion of the first heat exchange section of the first heat exchange channel is disposed in the U-shaped region of the third heat exchange channel.

[0057] In the above technical solution, by setting the third heat exchange channel to include a U-shaped area with the same structure as the first heat exchange channel, at least part of the first heat exchange section of the first heat exchange channel is arranged in the U-shaped area of ​​the third heat exchange channel, so that at least part of the first heat exchange channel and the third heat exchange channel can be arranged around each other. In this way, the winding method of the heat exchange channel 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 component and improving the temperature uniformity of the battery.

[0058] In some embodiments, the U-shaped region of the first heat exchange channel is located at the outermost circumference of the heat exchange element.

[0059] In the above technical solution, by setting the U-shaped area of ​​the second heat exchange section of the first heat exchange channel at the outermost circumference of the heat exchange component, the second heat exchange section can exchange heat on the outer circumference of the battery, which is beneficial to improving the temperature difference of the battery in different environments and increasing the service life of the battery to a certain extent.

[0060] In a second aspect, an embodiment of the present application further provides an electrical device, comprising the battery of the embodiment of the first aspect of the present application.

[0061] In the above technical solution, since the performance of the battery is improved, it is beneficial to improve the working power performance of the electrical device.

[0062] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] FIG1 is a schematic diagram of a vehicle according to some embodiments of the present application;

[0064] FIG2 is an exploded view of a battery according to some embodiments of the present application;

[0065] FIG3 is a schematic diagram of a battery according to some embodiments of the present application;

[0066] FIG4 is a top view of the battery in FIG3 ;

[0067] FIG5 is an exploded view of a box according to some embodiments of the present application;

[0068] FIG6 is a perspective view of a heat exchange element placed in a box according to some embodiments of the present application;

[0069] FIG7 is a schematic diagram of a heat exchange element placed in a box according to some embodiments of the present application;

[0070] FIG8 is a schematic diagram of a heat exchange element placed in a box according to other embodiments of the present application;

[0071] FIG9 is a schematic diagram of a battery assembly and a heat exchange element according to a first embodiment of the present application;

[0072] FIG10 is a schematic diagram of a battery assembly and a heat exchange element according to a second embodiment of the present application;

[0073] FIG11 is a schematic diagram of a battery assembly and a heat exchange element according to a third embodiment of the present application;

[0074] FIG12 is a schematic diagram of a battery assembly and a heat exchange element according to a fourth embodiment of the present application;

[0075] FIG13 is a schematic diagram of a battery assembly and a heat exchange element according to a fifth embodiment of the present application;

[0076] FIG14 is a partial cross-sectional view of a battery according to yet another embodiment of the present application;

[0077] FIG15 is a partial schematic diagram of a battery according to another embodiment of the present application.

[0078] Figures: 1. Vehicle; 1000. Battery; 100. Heat exchange element; 10. First heat exchange channel; 11. First heat exchange section; 111. First heat exchange portion; 112. First bend; 12. Second heat exchange section; 120. U-shaped area; 121. Second heat exchange portion; 122. Third heat exchange portion; 123. Second bend; 124. Third bend; 125. Fourth heat exchange portion; 126. Sixth bend; 127. Fifth heat exchange portion; 13. Third heat exchange section; 14. Fourth bend; 15. First inlet / outlet section; 16. Fifth bend; 17. Second inlet / outlet section; 18. Seventh bend; 30. Second heat exchange channel; 31. Fourth heat exchange section; 40. Third heat exchange channel; 200. Battery assembly; 201. Battery cell; 300, box body; 301, box body; 3011, accommodating cavity; 3012, box body; 3013, rib; 3014, groove; 302, bottom plate; 303, cover plate; 304, side plate; 305, channel; 306, beam; 3061, first recess; 500, temperature control element; 501, first temperature control element; 502, second temperature control element; 503, third temperature control element; 2000, controller; 3000, motor. DETAILED DESCRIPTION

[0079] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0080] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0081] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0082] Currently, market developments indicate that power batteries are becoming increasingly widely used. They are not only used in energy storage systems such as hydropower, thermal, wind, and solar power plants, but are also widely used in electric vehicles like electric bicycles, electric motorcycles, and electric vehicles, as well as in military equipment and aerospace. As power battery applications continue to expand, market demand is also growing.

[0083] To ensure battery safety during operation, a water cooling plate or air cooling is typically installed on the top or bottom of the battery. Currently, most liquid cooling plates are brazed or harmonica-tube-type. Brazed plates are typically made by brazing two plate-like structures. One plate is stamped with grooves, and the other is a flat plate that overlays the grooved plate, forming a flow channel. This integrally welded stamped plate supports the overall weight and also regulates the battery cell temperature. However, these plates currently suffer from insufficient structural strength, making them susceptible to deformation or bending. Furthermore, they are complex, energy-intensive, and expensive to produce, and are heavy. This not only increases the overall battery mass but also occupies a larger space, impacting the cell density within the battery and ultimately affecting battery efficiency. For batteries used in new energy vehicles, given the same energy consumption and strict limitations on battery volume and weight, the maximum range of a new energy vehicle is primarily determined by its energy density.

[0084] Based on the above considerations, in order to solve the problem of how to increase the structural strength of the box while improving the production efficiency of the box, effectively exchanging heat and reducing production costs, a battery box is designed, which includes a box body and a heat exchanger. The wall of the box body is formed with a groove, and the concave and convex structure of the box itself improves the strength of the box. At the same time, the heat exchanger is filled in the groove of the box. The heat exchanger can act as a reinforcement of the box to further improve the strength of the box and improve the reliability of the battery; on the other hand, the heat exchanger is embedded in the groove, occupying the space of the box, so that the two share part of the space, reducing the space in the battery occupied by the heat exchanger, making the battery structure more compact and reliable; at the same time, it also improves the density of the battery cell installation, and also improves the volume energy density of the battery, and further improves the reliability of the battery.

[0085] The box body includes a bottom plate and a cover plate. A groove can be stamped into the bottom plate, and the heat exchanger is embedded in the groove. The heat exchanger and bottom plate together form the bottom structure of the battery. The concave-convex structure of the bottom plate improves its strength. The heat exchanger also acts as a reinforcing rib to further enhance its strength. A groove can also be stamped into the cover plate, and the heat exchanger is embedded in the groove. The heat exchanger and cover plate together form the top structure of the battery. The concave-convex structure of the cover plate improves its strength. The heat exchanger also acts as a reinforcing rib to further enhance its strength.

[0086] The housing disclosed in this application can be used in electrical devices that use batteries as power sources or various energy storage systems that use batteries as energy storage elements. Electrical devices can include, but are not limited to, mobile phones, tablets, laptops, electric toys, power tools, battery-powered vehicles, electric cars, ships, spacecraft, and the like. Electric toys can include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, and spacecraft can include airplanes, rockets, space shuttles, and spacecraft, among others.

[0087] For the convenience of description, the following embodiments are described by taking a vehicle 1 as an example of an electrical device according to an embodiment of the present application.

[0088] Referring to Figure 1, Figure 1 is a schematic diagram of a vehicle 1 provided in some embodiments of the present application. The vehicle 1 can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 1000 is provided inside the vehicle 1, and the battery 1000 can be provided at the bottom, head or tail of the vehicle 1. The battery 1000 can be used to power the vehicle 1. For example, the battery 1000 can serve as an operating power source for the vehicle 1. The vehicle 1 can also include a controller 2000 and a motor 3000. The controller 2000 is used to control the battery 1000 to power the motor 3000, for example, for starting, navigating and operating power requirements of the vehicle 1 during driving.

[0089] In some embodiments of the present application, the battery 1000 can serve not only as an operating power source for the vehicle 1 , but also as a driving power source for the vehicle 1 , replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1 .

[0090] Referring to Figures 2-4, Figure 2 is an exploded view of a battery 1000 according to some embodiments of the present application, Figure 3 is a schematic diagram of a battery 1000 according to some embodiments of the present application, and Figure 4 is a top view of the battery in Figure 3. The battery 1000 includes a housing 300, a battery cell 201, and a heat exchanger 100. The housing 300 includes a housing body 301, which has a receiving cavity 3011, and a groove 3014 is formed in the wall of the housing body 301; the battery cell 201 is disposed in the receiving cavity 3011. At least a portion of the heat exchanger 100 is embedded in the groove 3014 and adheres to the wall. The housing body 301 is used to provide a receiving space for the battery cell 201, and the housing body 301 can adopt a variety of structures.

[0091] Exemplarily, the box body 301 may include a first portion (e.g., a cover plate 303) and a second portion (e.g., a box body 3012). The first portion and the second portion overlap each other, and the first portion and the second portion jointly define a housing cavity 3011 for accommodating the battery cell 201. The second portion may be a hollow structure with one end open, and the first portion may be a plate-like structure. The first portion overlaps the open side of the second portion, so that the first portion and the second portion jointly define the housing cavity 3011. The first portion and the second portion may also be hollow structures with one end open, with the open side of the first portion overlapping the open side of the second portion. Of course, the box body 301 formed by the first and second portions may have various shapes, such as a cylinder, a cuboid, etc.

[0092] For example, the box body 301 may further include a bottom guard plate, which is provided on the underside of the bottom plate 302 of the box body 301 to further enhance the bearing strength and impact resistance of the bottom of the box body 301. The bottom guard plate may be made of a variety of materials, including but not limited to copper, iron, aluminum, stainless steel, aluminum alloy, etc.

[0093] For example, in battery 1000, there may be multiple battery cells 201, and the multiple battery cells 201 may be connected in series, in parallel, or in a hybrid connection. Hybrid connection refers to multiple battery cells 201 being connected both in series and in parallel. Multiple battery cells 201 may be directly connected in series, in parallel, or in a hybrid connection, and then the entire battery 1001 structure may be housed within the box body 301. Of course, battery 1000 may also be a battery module formed by first connecting multiple battery cells 201 in series, in parallel, or in a hybrid connection, and then the multiple battery modules 1000 are further connected in series, in parallel, or in a hybrid connection to form an entire battery 1000 structure, and then housed within the box body 301. Battery 1000 may also include other structures, for example, the battery 1000 may also include a busbar component for achieving electrical connection between the multiple battery cells 201.

[0094] Each battery cell 201 can be a secondary battery or a primary battery, or a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 201 can be flat, rectangular, or in other shapes.

[0095] For example, in the battery 1000, the heat exchange component 100 can be arranged between multiple battery cells 201 and the bottom plate 302 of the box body 301, or between the bottom wall of the bottom plate 302 of the box body 301 and the bottom guard plate, or between the battery cell 201 and the cover plate 303 of the box body 301, or between two adjacent battery cells 201, to provide heat exchange for multiple battery cells 201.

[0096] 5 , which is a perspective view of a box 300 according to some embodiments of the present application, the box 300 includes a box body 301 .

[0097] The box body 301 includes a box body 3012 and a cover plate 303. The box body 3012 includes multiple side panels 304 and a bottom plate 302. The box body 3012 is a one-piece stamped part, or the multiple side panels 304 are each a profile frame. The bottom plate 302 is a one-piece stamped part, which simplifies the processing of the box body 3012, reduces production costs, and increases the structural strength of the box body 3012. The box body 301 has a accommodating cavity 3011. The wall of the box body 301 is formed with a groove 3014. Specifically, the groove 3014 is formed in the cover plate 303, and is located on the inner side of the cover plate 303 near the accommodating cavity 3011 or on the outer side facing away from the accommodating cavity 3011. The groove 3014 is formed in the bottom plate 302, and is located on the inner side of the bottom plate 302 near the accommodating cavity 3011 or on the outer side facing away from the accommodating cavity 3011. The heat exchange element 100 is embedded in the groove 3014, and the upper surface of the heat exchange element 100 along the thickness direction is flush with the notch of the groove 3014. This can increase the stability of the battery cell 201 placed in the accommodating cavity 3011. The box body 301 can also be made of a variety of materials, including but not limited to copper, iron, aluminum, stainless steel, aluminum alloy, etc.

[0098] The heat exchanger 100 is used to exchange heat with the battery cells 201 in the accommodating cavity 3011 to regulate the temperature of the battery cells 201 so that the temperature of the battery cells 201 remains within an appropriate range. The inlet and outlet of the heat exchanger 100 are located at one end of the box body 301, forming a cooling circuit to exchange heat with the battery cells 201. Specifically, the heat exchanger 100 can have various shapes, such as a "U"-shaped tube, a "loop"-shaped tube, etc. In addition, the heat exchanger 100 can be a single piece or a combination of multiple pipes, which can be selected according to the cooling requirements of the battery cells 201. The heat exchanger 100 can include multiple heat exchange channels, which can be connected in series or in parallel. This can increase the diversity of the heat exchange channel layout and improve the adaptability of the heat exchanger 100. The heat exchanger 100 can be made of various materials, including but not limited to: copper, iron, aluminum, stainless steel, aluminum alloy, etc.

[0099] Figure 6 is a three-dimensional diagram of the heat exchange element 100 placed in the box 300 according to some embodiments of the present application, Figure 7 is a schematic diagram of the heat exchange element placed in the box 300 according to some embodiments of the present application, and Figure 8 is a schematic diagram of the heat exchange element 100 placed in the box 300 according to other embodiments of the present application.

[0100] According to the battery 1000 of the first aspect of the present application, as shown in Figures 2 to 8, the battery 1000 includes a case 300, a battery cell 201 and a heat exchanger 100. The case 300 includes a case body 301, the case body 301 has a accommodating cavity 3011, and the wall of the case body 301 is formed with a groove 3014; the battery cell 201 is arranged in the accommodating cavity 3011; at least a portion of the heat exchanger 100 is embedded in the groove 3014 and adheres to the wall for heat exchange with the battery cell 201.

[0101] Illustratively, the battery 1000 includes a housing 300, which includes a housing body 301. A groove 3014 is formed in the wall of the housing body 301. The groove 3014 can be formed by stamping the wall of the housing body 301, thereby forming a concave-convex structure on the housing body 301 to increase the structural strength of the housing body 301. For example, the groove 3014 can be stamped into the wall of the housing body 301, and a convex rib 3013 can be formed on a side of the wall facing away from the groove 3014 and opposite the groove 3014. At least a portion of the heat exchange element 100 is embedded in the groove 3014, and the heat exchange element 100 can serve as a reinforcing rib of the housing body 301, further increasing the strength of the housing 300. Optionally, the wall of the box body 301 may be a cover plate 303, multiple side plates 304, or a bottom plate 302. A groove 3014 may be formed in the wall of the box body 301, that is, the cover plate 303, multiple side plates 304, or the bottom plate 302 may all be provided with the groove 3014. At least a portion of the heat exchange element 100 is embedded in the groove 3014. At least a portion of the heat exchange element 100 may be located on the cover plate 303, on the bottom plate 302, on one of the side plates 304, or on multiple side plates 304.

[0102] At least a portion of the heat exchange element 100 is embedded in the groove 3014. This may be done by partially embedding the heat exchange element 100 in the groove 3014, with another portion of the heat exchange element 100 extending from the opening of the groove 3014. Alternatively, the entire heat exchange element 100 may be embedded in the groove 3014. When the entire heat exchange element 100 is embedded in the groove 3014, the upper surface of the heat exchange element 100 along the thickness direction may be flush with the opening of the groove 3014, or the upper surface of the heat exchange element 100 along the thickness direction may be lower than the opening of the groove 3014.

[0103] The heat exchange element 100 is embedded in the groove 3014 of the box body 301. On the one hand, the heat exchange element 100 serves as a reinforcement rib for the box body 301, further increasing the strength of the box body 300 and thus improving the reliability of the battery 1000. On the other hand, the structure of the heat exchange element 100 is simplified. The heat exchange element 100 occupies the space of the box body 301, so that the heat exchange element 100 and the box body 301 share the same part of the space, so that the heat exchange element 100 no longer occupies the installation position of the battery cells, thereby increasing the density of the battery cells in the battery 1000 and the volumetric energy density of the battery 1000. This makes the structure of the battery 1000 more compact and reliable, and further improves the reliability of the battery 1000. For example, the battery 1000 can serve as the operating power source of the vehicle 1. The increased volumetric energy density of the battery 1000 can increase the range of the vehicle 1.

[0104] The box body 301 can serve as a carrier of the battery cell 201, and the concave-convex structure of the box body 301 itself increases the strength of the box body 300; in addition, the heat exchange component 100 is filled in the groove 3014 of the box body 301, and the heat exchange component 100 can serve as a reinforcement rib of the box body 301 to further increase the strength of the box body 301, so that the box body 301 is not easily deformed when carrying the battery cell 201.

[0105] For example, a layer of thermal conductive adhesive may be applied to the surface of the heat exchange element 100 close to the battery cell 201 to increase the heat exchange efficiency of the heat exchange element 100 . When a portion of the heat exchanger 100 is embedded in the groove 3014 and the other portion of the heat exchanger 100 extends out from the notch of the groove 3014, thermal conductive glue can be applied to the surface of the wall close to the battery cell 201 and the surface of the heat exchanger 100, so that the outer surface of the thermal conductive glue on the wall is flush with the outer surface of the thermal conductive glue of the heat exchanger 100; when the upper surface of the heat exchanger 100 along the thickness direction is lower than the notch of the groove 3014, thermal conductive glue can be applied to the surface of the wall close to the battery cell 201 and the surface of the heat exchanger 100, so that the outer surface of the thermal conductive glue on the wall is flush with the outer surface of the thermal conductive glue of the heat exchanger 100; in this way, not only the thermal conductivity efficiency of the heat exchanger 100 can be increased, but also the flatness of the heat exchanger 100 and the wall can be improved; when the battery cell 201 is placed in the accommodating cavity 3011, the stability of the battery cell 201 can be increased.

[0106] The heat exchanger 100 is attached to the wall of the box body 301, that is, the heat exchanger 100 is in direct contact with the wall of the box body 301, which can better increase the conduction of the force between the heat exchanger 100 and the wall of the box body 301, thereby improving the overall structural strength of the heat exchanger 100 after being attached to the wall of the box body 301.

[0107] For example, the heat exchange element 100 may include a heat exchange tube, which may be a hollow flat tube or a round tube. When the heat exchange tube is a hollow flat tube, the groove 3014 may be a square groove that matches the shape of the flat tube, allowing the heat exchange tube to better fit the wall of the groove 3014. When the heat exchange tube is a hollow round tube, the groove 3014 may be a circular groove that matches the shape of the round tube, allowing the heat exchange tube to better fit the wall of the groove 3014.

[0108] The heat exchange element 100 is used to exchange heat with the battery cells 201. A fluid, such as water, flows within the heat exchange element 100. When the temperature of the battery cells 201 is low, the temperature of the fluid is higher than that of the battery cells 201. The heat from the fluid can be transferred to the battery cells 201, raising the temperature of the battery cells 201, thereby maintaining the operating temperature of the battery cells 201 within a suitable range and extending the operating time of the battery cells 201. When the temperature of the battery cells 201 is too high, the temperature of the fluid is lower than that of the battery cells 201. The heat from the battery cells 201 can be transferred to the fluid, lowering the temperature of the battery cells 201, thereby maintaining the operating temperature of the battery cells 201 within a suitable range and extending the operating time of the battery cells 201.

[0109] In the above technical solution, on the one hand, after the groove 3014 is set in the box body 301 of the battery 1000, the concave-convex structure of the box body 301 itself improves the strength of the box body 301. At the same time, the heat exchanger 100 is filled in the groove 3014 of the box body 301. The heat exchanger 100 can serve as a reinforcement rib of the box body 301 to further improve the strength of the box body 300 and improve the reliability of the battery 1000; on the other hand, the heat exchanger 100 is embedded in the groove 3014, occupying the space of the box body 301, so that the two share part of the space, making the structure of the battery 1000 more compact and reliable, and also improving the volume energy density of the battery 1000, and further improving the reliability of the battery 1000.

[0110] According to some embodiments of the present application, as shown in FIG. 2 to FIG. 7 , the heat exchange element 100 is completely accommodated in the groove 3014 , and the upper surface of the heat exchange element 100 along the thickness direction is flush with the notch of the groove 3014 .

[0111] In the above technical solution, by making the heat exchange element 100 completely accommodated in the groove 3014, the heat exchange element 100 can be better protected, and the portion of the heat exchange element 100 not accommodated in the groove 3014 can be prevented from being squeezed and causing damage to the heat exchange element 100. In this way, the protected heat exchange element 100 can more reliably exchange heat with the battery cell 201, and the heat exchange efficiency of the battery cell 201 can be guaranteed. Furthermore, by making the upper surface of the heat exchange element 100 in the thickness direction flush with the notch of the groove 3014, the heat exchange element 100 can be effectively protected. The volume of the heat exchanger 100 can be increased while protecting the heat exchanger 100, which can increase the heat exchange between the heat exchanger 100 and the battery cell 201, thereby improving the heat exchange effect between the heat exchanger 100 and the battery cell 201. In addition, since the upper surface of the heat exchanger 100 along the thickness direction is flush with the notch of the groove 3014, the wall of the box body 301 is relatively flat, making the wall of the box body 301 containing the heat exchanger 100 more beautiful, and the battery cell 201 is also relatively stable when placed in the accommodating cavity 3011.

[0112] According to some embodiments of the present application, as shown in Figures 2 to 7, the box body 301 includes: a box body 3012, the box body 3012 is surrounded by multiple box walls, at least one of the multiple box walls forms a groove 3014, the groove 3014 is located on the inner side of the box wall close to the accommodating cavity 3011 and / or away from the outer side of the accommodating cavity 3011, and when the groove 3014 is located on the inner side, the groove 3014 is connected to the accommodating cavity 3011.

[0113] For example, the groove 3014 may be formed on one wall of the box body 3012, or on two of the multiple walls of the box body 3012, or on three of the multiple walls of the box body 3012, or on multiple walls of the box body 3012.

[0114] As shown in Figures 6 and 7, the multiple box walls can be multiple side panels 304 and a bottom panel 302 connected to the bottom ends of the multiple side panels 304, and the multiple side panels 304 are respectively the first side panel, the second side panel, the third side panel and the fourth side panel connected in sequence. Optionally, the groove 3014 can be formed on the first side panel, the second side panel, the third side panel, the fourth side panel or the first side panel, the bottom panel 302 or the second side panel, the third side panel or the second side panel, the fourth side panel or the second side panel, the bottom panel 302 or the third side panel, the fourth side panel or the third side panel, the bottom panel 302 or the fourth side panel, the bottom panel 302 The groove 3014 may be formed on the first side panel, the second side panel, the third side panel, or the first side panel, the second side panel, the bottom panel 302, or the first side panel, the second side panel, the fourth side panel, or the second side panel, the third side panel, the fourth side panel, the bottom panel 302, or the third side panel, the fourth side panel, the bottom panel 302; the groove 3014 may also be formed on the first side panel, the second side panel, the third side panel, the fourth side panel and the bottom panel 302.

[0115] Exemplarily, the groove 3014 is located on the inner side of the box wall near the accommodating cavity 3011, and when the groove 3014 is located on the inner side of the accommodating cavity 3011, the groove 3014 is connected to the accommodating cavity 3011, and at least part of the heat exchange element 100 is embedded in the groove 3014. The heat exchange element 100 can be in direct contact with the battery cell 201 in the accommodating cavity 3011. The heat or cold of the heat exchange element 100 can be directly transferred to the battery cell 201, which can improve the heat exchange efficiency of the heat exchange element 100.

[0116] For example, the groove 3014 is located on the outside of the box wall, away from the accommodating cavity 3011. At least a portion of the heat exchange element 100 is embedded in the groove 3014. The heat exchange element 100 can exchange heat with the box wall, and the box wall can then transfer heat or cold to the battery cells 201 more evenly. By locating the groove 3014 on the outside of the box wall, away from the accommodating cavity 3011, the heat exchange element 100 can be located outside the accommodating cavity 3011. For example, if the heat exchange element 100 is a metal heat exchange tube, locating the metal heat exchange tube outside the accommodating cavity 3011 can effectively insulate the metal heat pipe from the battery cells 201.

[0117] For example, a portion of the groove 3014 is located on the inner side of the box wall close to the accommodating cavity 3011, and another portion of the groove 3014 is located on the outer side of the box wall away from the accommodating cavity 3011. In this way, a portion of the heat exchange element 100 embedded in the groove 3014 can directly contact the battery cell 201, thereby ensuring the heat exchange efficiency of the battery cell 201, while the other portion can transfer the heat or cold of the heat exchange element 100 to the battery cell 201 more evenly through the box wall, which can be beneficial to achieving temperature uniformity of the battery cell 201.

[0118] In the above technical solution, on the one hand, by setting the groove 3014 on the box wall of the box body 3012, the structural strength of the box body 3012 can be better improved, and after the heat exchange component 100 is embedded in the groove 3014 of the box wall, the structural strength of the box body 3012 can be further improved. When the battery 1000 encounters a side collision, the box body 3012 can better protect the battery cells 201 in the box body 3012. On the other hand, the heat exchange component 100 is embedded in the groove 3014 of the box wall, which can better dissipate heat for the battery cells 201 adjacent to the box wall. Moreover, after the heat exchange component 100 absorbs the heat of the battery cells 201, it can be better transferred to the box wall, and the box wall can also better transfer the heat to the external space. In this way, the heat is continuously transferred toward the box wall, which can improve the heat exchange effect on the battery cells 201.

[0119] According to some embodiments of the present application, as shown in Figures 2-7 , the box body 301 includes a bottom plate 302 and a plurality of side plates 304 arranged around the bottom plate 302 and connected end to end. Grooves 3014 are formed in the bottom plate 302. The concave-convex structure of the bottom plate 302 itself enhances its strength. Furthermore, the heat exchange element 100 acts as a reinforcing rib for the bottom plate 302, further enhancing its strength. Furthermore, the heat exchange element 100, disposed on the bottom plate 302, effectively dissipates heat from the bottom of the battery cells 201.

[0120] Exemplarily, the multiple side panels 304 can be a first side panel, a second side panel, a third side panel and a fourth side panel connected in sequence, and an angle can be formed between the first side panel and the second side panel, and the angle can be 90°; an angle can be formed between the second side panel and the third side panel, and the angle can be 90°; an angle can be formed between the third side panel and the fourth side panel, and the angle can be 90°; an angle can be formed between the fourth side panel and the first side panel, and the angle can be 90°; the bottom plate 302 can be installed on the bottom surface of the multiple side panels 304, and the angles between the bottom plate 302 and the first side panel, the second side panel, the third side panel and the fourth side panel are all 90°.

[0121] Exemplarily, the box body 3012 is an integral stamped part. For example, a metal plate can be pressed, and a part of the metal plate is constructed as the bottom plate 302, and the other part of the metal plate is constructed as multiple side plates 304 connected in sequence along the outer periphery of the bottom plate 302. This can simplify the forming process of the box body 3012, and the connection strength and sealing between the bottom plate 302 and the side plates 304 are high, and the sealing is good, which can better protect the battery cells 201 in the box body 3012.

[0122] Furthermore, when the groove 3014 is on the bottom plate 302, the groove 3014 can also be directly constructed when the box body 3012 is produced by a stamping process, thereby reducing the processing technology and improving the processing efficiency.

[0123] Exemplarily, the multiple side panels 304 are all profile frames, and the bottom panel 302 is an integral stamped part. For example, the multiple side panels 304 can be individually processed and designed, and then the multiple side panels 304 are connected by welding. The bottom panel 302 can be manufactured separately by stamping metal sheets. In this way, the separately processed bottom panel 302 and side panels 304 have a simple structure and are easy to process, which can reduce production costs. Optionally, after the multiple side panels 304 are welded and formed, they can be welded to the bottom panel 302 to form the box body 3012. In addition, it should be noted that the side panels 304 composed of profile frames have good structural strength and can effectively offset the collision from the battery 1000 in the circumferential direction, thereby effectively protecting the battery cells 201 in the box body 3012.

[0124] Furthermore, when the groove 3014 is on the bottom plate 302 , the groove 3014 can also be directly constructed when the bottom plate 302 is produced by a stamping process, thereby reducing the number of processing steps and improving processing efficiency.

[0125] In the above technical solution, two different box body 3012 structures are constructed. One box body 3012 structure is to make the box body 3012 an integral stamped part to improve the overall structural strength of the box body 3012, and further improve the structural strength of the bottom plate 302 by forming a groove 3014 on the bottom plate 302 and the heat exchange component 100 embedded in the groove 3014, so that the structural strength of the box body 3012 can be greatly improved, and the battery cells 201 in the box body 3012 can be better protected. The other box body 3012 structure is to make the side panel 304 a profile frame, which can better improve the circumferential structural strength of the box body 3012, and further improve the structural strength of the bottom plate 302 by forming a groove 3014 on the bottom plate 302 and the heat exchange component 100 embedded in the groove 3014. In addition, the above two different box body 3012 structures have the advantages of simple structure and low production cost.

[0126] In some embodiments, as shown in Figures 2 to 7, the box body 301 includes: a box body 3012 and a cover plate 303, the box body 3012 is a semi-enclosed structure with an open end; the cover plate 303 is connected to the box body 3012, the cover plate 303 closes the opening, a groove 3014 is formed on the cover plate 303 and the groove 3014 is located on the inner side of the cover plate 303 close to the accommodating cavity 3011 or away from the outer side of the accommodating cavity 3011. The concave and convex structure of the cover plate 303 itself increases the strength of the cover plate 303. At the same time, the heat exchange component 100 can serve as a reinforcement rib of the cover plate 303 to further increase the strength of the cover plate 303.

[0127] Exemplarily, the groove 3014 is located on the inner side of the cover plate 303 close to the accommodating cavity 3011, and when the groove 3014 is located on the inner side of the accommodating cavity 3011, the groove 3014 is connected to the accommodating cavity 3011, and at least part of the heat exchange element 100 is embedded in the groove 3014. The heat exchange element 100 can be in direct contact with the battery cell 201 in the accommodating cavity 3011, which can improve the heat exchange efficiency of the heat exchange element 100.

[0128] For example, the groove 3014 is located on the outer side of the cover plate 303 away from the accommodating cavity 3011, and at least part of the heat exchange element 100 is embedded in the groove 3014. The heat exchange element 100 can exchange heat with the cover plate 303, and the cover plate 303 can evenly disperse the heat or cold of the heat exchange element 100, and transfer the heat or cold of the heat exchange element 100 to the battery cell 201 more evenly.

[0129] Exemplarily, the box body 3012 is an integral stamped part. For example, a metal plate can be pressed, and a part of the metal plate is constructed as a bottom plate 302, and the other part of the metal plate is constructed as a plurality of side plates 304 connected in sequence along the outer periphery of the bottom plate 302. This can simplify the forming process of the box body 3012, and the connection strength and sealing between the bottom plate 302 and the side plates 304 are high. A cover plate 303 with a groove 3014 and a heat exchanger 100 embedded in the groove 3014 are further provided. The assembled box body 301 has a high structural strength and can better protect the battery cells 201 in the box body 301.

[0130] Furthermore, when the groove 3014 is on the bottom plate 302, the groove 3014 can also be directly constructed when the box body 3012 is produced by a stamping process, thereby reducing the processing technology and improving the processing efficiency.

[0131] Exemplarily, the multiple side panels 304 are all profile frames, and the bottom panel 302 is an integral stamped part. For example, the multiple side panels 304 can be individually processed and designed, and then the multiple side panels 304 are connected by welding. The bottom panel 302 can be manufactured separately by stamping metal sheets. In this way, the separately processed bottom panel 302 and side panels 304 have a simple structure and are easy to process, which can reduce production costs. Optionally, after the multiple side panels 304 are welded and formed, they can be welded to the bottom panel 302 to form the box body 3012. In addition, it should be noted that the side panels 304 composed of profile frames have good structural strength and can effectively offset the collision from the battery 1000 in the circumferential direction, thereby effectively protecting the battery cells 201 in the box body 3012. A cover plate 303 with a groove 3014 and a heat exchange element 100 embedded in the groove 3014 are further provided. The assembled box body 301 has high structural strength and can better protect the battery cells 201 in the box body 301.

[0132] Furthermore, when the groove 3014 is on the bottom plate 302 , the groove 3014 can also be directly constructed when the bottom plate 302 is produced by a stamping process, thereby reducing the number of processing steps and improving processing efficiency.

[0133] In the above technical solution, a cover plate 303 with a groove 3014 and a heat exchange element 100 embedded in the groove 3014 are provided, which can better improve the structural strength of the cover plate 303, and the heat exchange element 100 provided in the groove 3014 can also better improve the heat exchange efficiency at the top of the battery cell 201.

[0134] According to some embodiments of the present application, as shown in FIG. 3 to FIG. 7 , the cover plate 303 is an integrally stamped part. The integrally formed cover plate 303 has good consistency and high structural strength.

[0135] For example, a groove 3014 can be integrally punched out on the cover plate 303, which has a simple structure and low processing difficulty. The shape of the groove 3014 can be designed according to actual conditions, and the sealing effect of the groove 3014 is good, which can better protect the heat exchange element 100. Moreover, the cooperation between the groove 3014 and the heat exchange element 100 can increase the contact area between the heat exchange element 100 and the cover plate 303, so that the heat exchange element 100 can dissipate heat toward the outside through the cover plate 303, thereby improving the heat exchange effect of the heat exchange element 100 on the battery cell 201.

[0136] In the above technical solution, the cover plate 303 is simple and convenient to process, and the shape of the groove 3014 can be designed according to actual conditions, which has good flexibility. The integrally stamped groove 3014 has a good sealing effect and can better protect the heat exchange component 100.

[0137] According to some embodiments of the present application, as shown in Figures 2 to 7, the box body 3012 includes a bottom plate 302 and a plurality of side plates 304 arranged around the bottom plate 302 and connected end to end in sequence. The side plates 304 and the bottom plate 302 are made of the same material and are formed separately and welded together.

[0138] For example, the plurality of side panels 304 can be welded to the bottom panel 302 separately, and then two adjacent side panels 304 are welded together. Alternatively, the plurality of side panels 304 can be welded first, and then the plurality of welded side panels 304 can be welded to the bottom panel 302. Since the plurality of side panels 304 are made of the same material, and the side panels 304 and the bottom panel 302 are also made of the same material, when welding two side panels 304, or when welding the side panels 304 and the bottom panel 302, the welding effect is good, and the structural strength after welding is high. Therefore, the side panels 304 and the bottom panel 302 can be welded together to increase the connection strength between the side panels 304 and the bottom panel 302, thereby improving the structural strength of the box body 3012.

[0139] In the above technical solution, the side panels 304 and the bottom panel 302 are made of the same material. When the side panels 304 and the bottom panel 302 are welded, the welding effect is good and the structural strength after welding is high. By increasing the connection strength between the side panels 304 and the bottom panel 302, the structural strength of the box body 3012 can be improved.

[0140] According to some embodiments of the present application, as shown in Figures 2 to 7, the heat exchange element 100 includes at least one heat exchange tube. When there are multiple heat exchange tubes, a heat exchange channel is defined on the inner side of each heat exchange tube for the circulation of fluid.

[0141] For example, the number of heat exchange tubes may be one, two, three, or more than three, and the number of heat exchange tubes may be designed according to the size of the battery cell 201 .

[0142] Exemplarily, the shapes of the heat exchange tubes may include multiple types, for example, the heat exchange tubes may be round tubes or flat tubes, etc. At the same time, the shapes of the heat exchange channels defined by the heat exchange tubes may also include multiple types, for example, U-shaped heat exchange channels, meandering heat exchange channels, etc.

[0143] For example, the plurality of heat exchange tubes may be arranged in sequence along a first direction (refer to the Y1 direction in FIG. 6 ). Of course, the plurality of heat exchange tubes may also be arranged around each other, or further, the plurality of heat exchange tubes may be arranged around each other in the same plane.

[0144] In the above technical solution, the heat exchange tube has a simple structure and low production cost, and the shape of the heat exchange tube can be better changed. Therefore, the heat exchange tube can be better bent to better arrange the heat exchange flow channel in the battery 1000. In addition, the heat exchange tube has good structural strength. After the heat exchange tube is embedded in the wall, the heat exchange tube can better improve the structural strength of the wall.

[0145] According to some embodiments of the present application, as shown in FIG. 2 to FIG. 7 , the heat exchange tube is formed by bending a single tube.

[0146] Single tube bending refers to the process of bending a heat exchange tube multiple times from a single straight tube through a process such as rolling. For example, a single straight tube can be bent at multiple preset positions, such as into a V-shape or a U-shape, which is simple and convenient to operate.

[0147] In the above technical solution, on the one hand, the heat exchange tube can be bent better according to the actual heat dissipation needs to construct a heat exchange tube layout with different densities or directions of the heat exchange tube, so that the entire heat exchange area has multiple areas with different heat exchange effects, so that the heat exchange element 100 has different heat exchange effects for different areas, thereby improving the heat exchange flexibility of the heat exchange element 100. On the other hand, the different bending states of the heat exchange tube can also better adjust the flow rate, pressure, etc. of the fluid in the heat exchange channel, so that the fluid can more fully absorb the heat of the battery cell 201, thereby improving the heat dissipation effect of the battery cell 201.

[0148] In addition, by bending the heat exchange tube from a single tube, the sealing of the heat exchange channel can be improved, thereby reducing the risk of fluid leakage and improving the reliability of the heat exchange element 100 during use.

[0149] According to some embodiments of the present application, the heat exchange tube is bent in an arc shape at the bending position.

[0150] Among them, the arc-shaped bend can reduce the flow resistance of the fluid and reduce the pressure drop. Furthermore, the arc-shaped bend of the heat exchange tube at the bending position can increase the flow rate of the heat exchange fluid in the heat exchange channel, thereby increasing the heat exchange efficiency of the heat exchange element 100.

[0151] In the above technical solution, by setting the heat exchange tube to be bent in an arc shape at the bending position, the flow resistance of the fluid can be reduced, the pressure drop can be reduced, and the flow rate of the heat exchange fluid in the heat exchange channel can be increased, thereby increasing the heat exchange efficiency of the heat exchange element 100.

[0152] According to some embodiments of the present application, as shown in FIG. 2 to FIG. 7 , the groove 3014 is gap-fitted with the heat exchange tube and extends along the length direction of the heat exchange tube.

[0153] The clearance between the groove 3014 and the heat exchange tube facilitates assembly of the heat exchange tube into the groove 3014, resulting in high assembly efficiency. It also facilitates removal of the heat exchange tube from the groove 3014, thereby facilitating replacement or repair of the heat exchange tube. Furthermore, due to the clearance between the groove 3014 and the heat exchange tube, when the wall with the groove 3014 undergoes a certain degree of deformation, it is less likely to damage the heat exchange tube within the groove 3014. For example, if the wall undergoes elastic deformation, then if the heat exchange tube has an interference fit with the groove 3014, the heat exchange tube is also likely to deform. This deformation of the heat exchange tube affects the heat exchange flow path within the heat exchange tube, which in turn easily affects the flow of the fluid, thereby affecting the heat exchange effect of the heat exchange tube.

[0154] For example, when the heat exchange tube is placed in the groove 3014, one side of the heat exchange tube can be fitted with the gap between one side wall of the groove 3014, and the other side of the heat exchange tube can be in contact with the other side wall of the groove 3014; or the two side surfaces of the heat exchange tube can be fitted with the gap between the walls on both sides of the groove 3014 respectively.

[0155] For example, thermal conductive glue can be applied in the assembly gap between the groove 3014 and the heat exchange tube, which can not only fix the heat exchange tube into the groove 3014, but also improve the heat exchange efficiency of the heat exchange tube in transferring heat or cold to the box body 301.

[0156] As shown in Figures 2 to 7, the heat exchange tube is a curved tube with multiple bends, and the groove 3014 is also constructed as a groove shape bent along the length direction of the heat exchange tube, that is, the bending shape of the heat exchange tube is the same as the shape of the groove 3014. In this way, the groove 3014 can better position and assemble the heat exchange tube. After the heat exchange tube is installed in the groove 3014, it is not easy to move or shake. The position of the heat exchange tube is relatively stable, so the battery cell 201 can be better cooled.

[0157] In the above technical solution, the heat exchange tube is easy to disassemble and assemble by making the groove 3014 fit with the clearance of the heat exchange tube, which can improve the assembly efficiency of the heat exchange tube on the one hand, and improve the replacement or maintenance efficiency of the heat exchange tube on the other hand; by making the groove 3014 extend along the length direction of the heat exchange tube, the shape of the groove 3014 is the same as the shape of the heat exchange tube, so that after the heat exchange tube is assembled into the groove 3014, the groove 3014 can better limit the position of the heat exchange tube, making it difficult for the heat exchange tube to move or shake, and the position of the heat exchange tube is relatively stable, which can better dissipate heat for the battery cell 201.

[0158] According to some embodiments of the present application, as shown in FIG. 2 to FIG. 7 , the heat exchange tube is a flat tube or a harmonica tube.

[0159] Among them, the flat tube or harmonica tube is a hollow tube with a simple structure, easy production and low cost, therefore, the production cost of the heat exchange tube can be reduced; in addition, the upper and lower surfaces of the square tube or flat tube are both flat planes, and thus, the heat exchange tube is a flat tube or harmonica tube, which can increase the installation stability of the heat exchange tube.

[0160] Referring to Figures 2 to 7 , a heat exchange tube can be mounted on the base plate 302 or the cover plate 303 with a stamped groove 3014. Since the heat exchange tube is a flat tube or a harmonica tube, taking the flat tube mounted on the base plate 302 as an example, the thickness of the flat tube is relatively small, so the overall thickness of the flat tube after being mounted on the base plate 302 is also small. This can improve the structural strength of the base plate 302 while reducing the thickness of the heat exchange component 100 and the base plate 302 after being combined, which is conducive to the thinning design of the battery 1000.

[0161] For example, the box body 3012 is formed by integral stamping, and the box body 3012 has a bottom plate 302, and a groove 3014 is provided on the bottom plate 302. The box body 3012 formed by integral stamping has good sealing performance, and the heat exchange tube, which is a flat tube or a harmonica tube, is embedded in the groove 3014. It can improve the structural strength of the bottom plate 302 while reducing the thickness of the combination of the heat exchange component 100 and the bottom plate 302, which is conducive to the thinning design of the battery 1000.

[0162] In the above technical solution, by setting a flat tube or a harmonica tube with a relatively small thickness, the heat exchange tube can be better embedded in the wall of the box body 301. While not easily increasing the thickness of the wall, it can also improve the structural strength of the wall. Moreover, the flat tube or the harmonica tube has a simple structure and low production cost, which can better reduce the production cost of the battery 1000.

[0163] According to some embodiments of the present application, as shown in FIG5-7 , the box body 300 further includes: a beam body 306 , which is disposed in the box body 301 , and a channel 305 is constructed between the beam body 306 and the box body 301 to allow the heat exchange tube to pass through.

[0164] The beam body 306 is arranged in the box body 301, and is used to separate the assembly area of ​​the battery cell 201 and the assembly area of ​​the electrical components, and can also limit the position of the battery cell 201. By constructing a channel 305 between the beam body 306 and the box body 301 to allow the heat exchange tube to pass through, the heat exchange tube can be easily connected to the external water pipe to form a cooling circuit.

[0165] Exemplarily, two beam bodies 306 may be provided, spaced apart in the box body 301, and an assembly area for assembling the battery cell 201 may be constructed between the two beam bodies 306. Optionally, a channel 305 may be constructed between one of the two beam bodies 306 and the box body 301, or a channel 305 may be constructed between both beam bodies 306 and the box body 301.

[0166] Exemplarily, the box body 301 includes a bottom plate 302 and a cover plate 303, and two heat exchange elements 100 are provided, one heat exchange element 100 is located in the groove 3014 of the cover plate 303, and the other heat exchange element 100 is located in the groove 3014 of the bottom plate 302. A channel 305 is also constructed between the beam body 306 and the cover plate 303, and the heat exchange pipe of the heat exchange element 100 located on the cover plate 303 is suitable for passing through the channel 305; a channel 305 is constructed between the beam body 306 and the bottom plate 302, and the heat exchange pipe of the heat exchange element 100 located on the bottom plate 302 is suitable for passing through the channel 305.

[0167] In the above technical solution, a beam body 306 is provided in the box body 301, and a channel 305 is constructed between the beam body 306 and the box body 301 for allowing the heat exchange tube to pass through, so that the heat exchange tube is connected to the external water pipe to form a cooling circuit.

[0168] According to some embodiments of the present application, as shown in FIG. 5 to FIG. 7 , the beam body 306 has a first recess 3061 , and / or the box body 301 has a second recess, and the first recess 3061 and / or the second recess construct a channel 305 .

[0169] Exemplarily, the beam body 306 has a first recess 3061 . The beam body 306 is disposed in the box body 301 . The first recess 3061 is configured as a channel 305 allowing the heat exchange tube to pass through, thereby facilitating the processing and forming of the channel 305 .

[0170] Exemplarily, the box body 301 has a second recess. For example, the box body 301 includes a cover plate 303 and a bottom plate 302, that is, a second recess can be provided on both the cover plate 303 and the bottom plate 302. The beam body 306 is provided in the box body 301. The second recess is constructed as a channel 305 that allows the heat exchange tube to pass through, which facilitates the processing and forming of the channel 305.

[0171] Exemplarily, the beam body 306 has a first recess 3061, and the box body 301 has a second recess. For example, the box body 301 includes a cover plate 303 and a bottom plate 302, that is, a second recess can be provided on the cover plate 303 and the bottom plate 302. The beam body 306 is arranged in the box body 301, and the first recess 3061 cooperates with the second recess to form a channel 305 that allows the heat exchange tube to pass through, which facilitates the processing and forming of the channel 305.

[0172] In the above technical solution, a channel 305 allowing the heat exchange tube to pass through can be constructed between the beam body 306 and the box body 301 according to actual needs, so as to facilitate the heat exchange tube to communicate with the external water pipe to form a cooling circuit.

[0173] According to some embodiments of the present application, as shown in FIG. 5 to FIG. 7 , the beam body 306 is a hollow beam, and a portion of the beam body 306 protrudes toward the inside of the hollow beam to form a first recess 3061 .

[0174] The hollow beam 306 can reduce the weight of the beam 306 and, in turn, the weight of the battery 1000. The first recess 3061 formed by the beam 306 simplifies the processing of the first recess 3061 and eliminates the need for a second recess in the box body 301, thereby increasing the structural stability of the box body 301.

[0175] For example, the first recess 3061 can be processed into a shape that matches the heat exchange tube, and the heat exchange tube can be fixed to the channel 305 defined by the beam body 306 and the box body 301 to further fix the heat exchange tube.

[0176] In the above technical solution, by setting the beam body 306 as a hollow beam, the weight of the beam body 306 can be reduced, and then the weight of the battery 1000 can be reduced. Part of the beam body 306 protrudes toward the inside of the hollow beam to form a first recess 3061. The processing method is simple and the production cost is low. The constructed first recess 3061 has a stable structure and is not easy to cause pressure on the heat exchange tube, so that the fluid can smoothly enter and exit the heat exchange tube.

[0177] According to some embodiments of the present application, as shown in FIG. 5 to FIG. 7 , the beam body 306 is an expansion beam that can expand or contract along the second direction, or the beam body 306 is a non-metallic beam body.

[0178] The temperature of the battery cell 201 is affected by the operating state and the external temperature. When the temperature of the battery cell 201 drops, the battery cell 201 contracts, and the volume of the battery cell 201 decreases. The beam 306 is an expansion beam, and the beam 306 can accordingly expand to a certain extent along the second direction to fix the battery cell 201 within the accommodating cavity 3011. When the temperature of the battery cell 201 rises, the battery cell 201 expands, and the volume of the battery cell 201 increases. The beam 306 is an expansion beam, and the beam 306 can accordingly contract to a certain extent along the second direction to provide expansion space for the battery cell 201.

[0179] The beam body 306 is a non-metal beam body, which can reduce the weight of the beam body 306 and thus reduce the weight of the battery 1000 , and can also better insulate the beam body 306 from the battery cell 201 .

[0180] For example, as shown in FIG. 6 , the second direction is the thickness direction of the battery cell 201 , that is, the direction X1 shown in FIG. 6 .

[0181] In the above technical solution, by setting the beam body 306 as an expansion beam, an installation space can be provided for the volume change of the battery cell 201 due to thermal expansion and contraction; by making the beam body 306 a non-metallic beam body, the weight of the beam body 306 can be reduced, and then the weight of the battery 1000 can be reduced, and it can also be better insulated from the battery cell 201.

[0182] The heat exchanger 100 according to the embodiments of the present application is described below with reference to Figures 7 to 13. Figure 7 is a schematic diagram of the heat exchanger 100 placed in the box 300 according to some embodiments of the present application. Figure 8 is a schematic diagram of the heat exchanger 100 placed in the box 300 according to other embodiments of the present application. Figure 9 is a schematic diagram of the battery assembly 200 and the heat exchanger 10 according to the first embodiment of the present application. Figure 10 is a schematic diagram of the battery assembly 200 and the heat exchanger 10 according to the second embodiment of the present application. Figure 11 is a schematic diagram of the battery assembly 200 and the heat exchanger 10 according to the third embodiment of the present application. Figure 12 is a schematic diagram of the battery assembly 200 and the heat exchanger 10 according to the fourth embodiment of the present application. Figure 13 is a schematic diagram of the battery assembly 200 and the heat exchanger 10 according to the fifth embodiment of the present application.

[0183] An embodiment of the present application proposes a heat exchange element 100, as shown in Figures 7 to 13. The heat exchange element 100 is used for a battery 1000. The heat exchange element 100 includes a first heat exchange channel 10. The first heat exchange channel 10 includes a first heat exchange section 11 and a second heat exchange section 12. The second heat exchange section 12 is bent to form a U-shaped area 120. The first heat exchange section 11 is bent and arranged in the U-shaped area 120, and is bent and connected to the second heat exchange section 12.

[0184] Specifically, the battery 1000 may include multiple battery cells 201, and the first heat exchange channel 10 is used to exchange heat with the multiple battery cells 201 of the battery 1000, so that the temperature of the battery cells 201 can be limited to a safe operating temperature, thereby ensuring the operating reliability of the battery 1000.

[0185] Among them, the above-mentioned "the second heat exchange section 12 is bent to form a U-shaped area 120 (for example, the area shown by the dotted line in Figure 9), and the first heat exchange section 11 is bent and arranged in the U-shaped area 120" is intended to illustrate that the second heat exchange section 12 is arranged on the circumferential periphery of the first heat exchange section 11, and can be arranged on the three circumferential sides of the first heat exchange section 11. The second heat exchange section 12 can be arranged closer to the peripheral position of the battery 1000 relative to the first heat exchange section 11.

[0186] The second heat exchange section 12 is bent to form a U-shaped area 120 , that is, in the direction from one end of the second heat exchange section 12 toward the other end, the second heat exchange section 12 extends along the U-shaped line to form the U-shaped area 120 .

[0187] The first heat exchange section 11 is bent and arranged in the U-shaped area 120, that is, the first heat exchange section 11 is arranged in the space enclosed by the second heat exchange section 12, and the first heat exchange section 11 extends along a non-straight line on the inner side of the second heat exchange section 12 and has at least one bending position.

[0188] It should be noted that this embodiment only limits the first heat exchange section 11 to being bent and disposed within the U-shaped region 120, and does not limit the bending form of the first heat exchange section 11. That is, the specific bending form of the first heat exchange section 11 can be designed according to the heat exchange requirements of the battery 1000. For example, the first heat exchange section 11 can extend along the length direction of the battery cell 201 (i.e., the Y1 direction in FIG. 7 ), and after extending to a certain length, bend toward the width direction of the battery cell 201 (i.e., the X1 direction in FIG. 7 ), and then continue to extend along the length direction of the battery cell 201 and bend along the width direction. Alternatively, the first heat exchange section 11 can extend along the width direction of the battery cell 201, and after extending to a certain length, bend toward the length direction of the battery cell 201, and then continue to extend along the width direction of the battery cell 201 and bend along the length direction.

[0189] The first heat exchange section 11 and the second heat exchange section 12 are connected in a bent manner, that is, one end of the first heat exchange section 11 is connected to one end of the second heat exchange section 12, and the connection position between the first heat exchange section 11 and the second heat exchange section 12 is a bent non-linear structure. For example, the connection position between the first heat exchange section 11 and the second heat exchange section 12 can be bent into an arc segment.

[0190] Among them, the first heat exchange section 11 and the second heat exchange section 12 are connected, so that one of the end of the first heat exchange section 11 away from the second heat exchange section 12 and the end of the second heat exchange section 12 away from the first heat exchange section 11 can be used as the liquid inlet end and the other can be used as the liquid outlet end. Therefore, when the first heat exchange channel 10 is exchanging heat, the fluid can flow from the first heat exchange section 11 to the second heat exchange section 12, or from the second heat exchange section 12 to the first heat exchange section 11.

[0191] It is understandable that as the fluid flows through the first heat exchange channel 10, the temperature of the fluid gradually changes, resulting in a gradual decrease in the heat exchange effect. For example, when the heat exchange element 100 cools the battery assembly 200, the heat from the battery cell 201 is gradually transferred to the fluid, causing the fluid temperature to gradually increase as it flows along the first heat exchange channel 10, the temperature difference between the fluid and the battery cell 201 gradually decreases, and the heat exchange efficiency gradually decreases. When the heat exchange element 100 heats the battery assembly 200, the heat in the fluid is gradually transferred to the battery cell 201, causing the fluid temperature to gradually decrease as it flows along the first heat exchange channel 10, the temperature difference between the fluid and the battery cell 201 gradually decreases, and the heat exchange efficiency gradually decreases.

[0192] In this embodiment, when the heat exchange element 100 is dissipating heat and cooling the battery assembly 200, the fluid can also flow from the first heat exchange section 11 to the second heat exchange section 12, but the fluid can also flow from the second heat exchange section 12 to the first heat exchange section 11. When the fluid also flows from the first heat exchange section 11 to the second heat exchange section 12, the battery cells 201 in the middle of the battery 1000 (that is, the internal battery cells 201 on the inner side of the periphery) can be cooled first, and then the battery cells 201 at the peripheral edge of the battery 1000 can be cooled. Since the heat dissipation of the battery cells 201 at the peripheral edge of the battery 1000 is better than that of the internal battery cells 201, the lower temperature fluid in the first heat exchange section 11 can better meet the heat dissipation requirements of the battery cells 201 at the middle of the battery 1000. At the same time, due to the peripheral The battery cells 201 at the edge of the battery 1000 can dissipate heat naturally directly to the external environment. When the temperature of the fluid in the second heat exchange section 12 is slightly higher, it can still meet the heat dissipation needs of the peripheral battery cells 201, so that the cooling effects obtained by the battery cells 201 at the edge of the battery 1000 and the battery cells 201 at the middle of the battery 1000 are roughly the same, and the temperatures of the battery cells 201 at the edge of the battery 1000 and the battery cells 201 at the middle of the battery 1000 after cooling and heat dissipation are relatively consistent, making the temperature distribution inside the battery 1000 more uniform.

[0193] When the heat exchange element 100 heats the battery assembly 200, the fluid can also flow from the first heat exchange section 11 to the second heat exchange section 12, but the fluid can also flow from the second heat exchange section 12 to the first heat exchange section 11. For example, when the fluid flows from the second heat exchange section 12 to the first heat exchange section 11, the battery cells 201 on the periphery of the battery assembly 200 can be heated first, and then the fluid can cool the battery cells 201 in the middle of the battery assembly 200. Since the battery cells 201 on the periphery of the battery 1000 dissipate more heat to the external environment, the temperature of the battery cells 201 on the periphery of the battery 1000 is more likely to drop. The fluid first heats the battery cells 201 on the periphery of the battery 1000. The higher temperature fluid can increase the temperature of the battery cells 201 on the periphery while compensating for the heat lost by the battery cells 201 due to heat dissipation to the external environment, thereby meeting its In order to meet the heating needs, the battery cells 201 in the middle of the battery assembly 200 have less contact area with the external environment and less heat loss. The lower temperature fluid flowing in the first heat exchange section 11 can cooperate with the heat generated by the battery cells 201 themselves to meet their heating needs. As a result, the heating effects obtained by the battery cells 201 on the periphery of the battery 1000 and the battery cells 201 in the middle of the battery assembly 200 are basically the same, and the temperatures of the battery cells 201 on the periphery of the battery 1000 and the battery cells 201 in the middle of the battery assembly 200 after heating are relatively consistent, making the temperature distribution in the battery 1000 more uniform.

[0194] In the above technical solution, the second heat exchange section 12 is bent to form a U-shaped area 120, and the first heat exchange section 11 is bent and arranged in the U-shaped area 120. When the heat exchange component 100 exchanges heat with the battery assembly 200, the U-shaped area 120 formed by the outer second heat exchange section 12 can be opposite to the outer battery cells of the battery, and the first heat exchange section 11 in the U-shaped area 120 can be opposite to the internal battery cells, so that the heat exchange component 100 can make up for the internal and external temperature difference caused by the heat exchange between the outer battery cells 201 and the environment, so that the heat exchange effect of the battery cells 201 outside the battery assembly 200 and the battery cells 201 inside the battery assembly 200 tend to be consistent, thereby improving the temperature uniformity of the battery 1000, thereby improving the service life of the battery 1000 to a certain extent.

[0195] According to some embodiments of the present application, as shown in FIG. 7 to FIG. 13 , the second heat exchange section 12 may be located at the outermost side of the first heat exchange channel 10 in the circumferential direction.

[0196] That is to say, the second heat exchange section 12 is formed as the outermost flow channel of the first heat exchange channel 10. In this way, the second heat exchange section 12 can be used to exchange heat with the battery cells 201 around the battery 1000, thereby improving the temperature uniformity of the battery cells 201 around the battery 1000.

[0197] In the above technical solution, by arranging the second heat exchange section 12 at the outermost side of the circumference of the first heat exchange channel 10, the second heat exchange section 12 can exchange heat with the battery cells 201 on the outer circumference of the battery assembly 200, which is beneficial to improving the temperature difference between the inside and outside of the battery assembly 200 caused by heat exchange with the environment, and to a certain extent, improve the service life of the battery assembly 200.

[0198] According to some embodiments of the present application, the first heat exchange section 11 and the second heat exchange section 12 can be bent in the same plane.

[0199] In the above technical solution, by setting the first heat exchange section 11 and the second heat exchange section 12 to bend in the same plane, the first heat exchange channel 10 can exchange heat for the battery 1000 in the same plane. As a result, the structure of the first heat exchange channel 10 can be simplified, the production difficulty of the first heat exchange channel 10 can be reduced, and at the same time, the space occupied by the first heat exchange channel 10 can be reduced, thereby improving the volume energy density of the battery 1000.

[0200] According to some embodiments of the present application, as shown in FIG. 7 to FIG. 13 , the first heat exchange section 11 may include a plurality of first heat exchange parts 111 , and the plurality of first heat exchange parts 111 are arranged at intervals and are connected in series by bending.

[0201] That is, the plurality of first heat exchange sections 111 are sequentially connected, and the connection between two connected first heat exchange sections 111 is bent. For example, the two connected first heat exchange sections 111 can be bent along a fold line or an arc. The number of first heat exchange sections 111 can be two, three, four, five, or more.

[0202] It should be noted that the first heat exchange portion 111 can have various shapes. For example, the first heat exchange portion 111 can be linear or curved. The first heat exchange portion 111 can also extend in various directions. For example, it can extend along the length or thickness of the battery cell 201. In this way, multiple first heat exchange portions 111 can be bent and connected in sequence, so that the first heat exchange section 11 can form an S-shaped, X-shaped, or V-shaped heat exchange channel.

[0203] In the above technical solution, on the one hand, by setting up multiple first heat exchange parts 111, the heat exchange area of ​​the first heat exchange section 11 can be increased, and then the heat exchange area of ​​the first heat exchange channel 10 can be increased, thereby improving the heat exchange effect of the first heat exchange channel 10; 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 111, the overall heat exchange effect can be guaranteed while ensuring that the temperature difference between the internal and external battery cells is small.

[0204] According to some embodiments of the present application, as shown in Figures 7 to 13, a plurality of first heat exchange parts 111 are arranged at intervals along a first direction (i.e., the Y1 direction shown in Figure 7), and each first heat exchange part 111 extends in a straight line along a second direction (i.e., the X1 direction shown in Figure 7), and the first direction and the second direction are set at an angle.

[0205] The phrase "the first direction and the second direction are arranged at an angle" is intended to explain that the first and second directions can be arranged perpendicularly or intersecting non-perpendicularly. For example, the first and second directions can be arranged at an angle of 30°, 60°, 80°, 120°, 150°, or 170°. For example, as shown in FIG9 , the first direction is the length direction of the battery cell 201, and the second direction is the thickness direction of the battery cell 201. The first heat exchange portion 111 extends along the length direction of the battery cell 201 and is arranged at intervals along the thickness direction of the battery cell 201. In this way, multiple first heat exchange portions 111 are connected by bending to form an S-shaped heat exchange channel, which can achieve heat exchange for multiple battery cells 201.

[0206] In the above technical solution, by setting the first heat exchange part 111 to extend straightly along the second direction, the production difficulty of the first heat exchange part 111 can be reduced, and the production complexity of the first heat exchange channel 10 can be reduced. At the same time, the straight pipe can also increase the flow rate of the fluid, thereby improving the heat exchange effect of the first heat exchange channel 10.

[0207] According to some embodiments of the present application, as shown in FIG. 7 to FIG. 13 , the first heat exchange section 11 may further include: a first bending portion 112 , the first bending portion 112 is arc-shaped, and is bent and connected between two adjacent first heat exchange portions 111 .

[0208] The first bend 112 is arc-shaped, that is, the first bend 112 extends along an arc, and the fluid flow directions at both ends of the first bend 112 form a certain angle. As a result, the first bend 112 can change the flow direction of the fluid, thereby allowing the two connected first heat exchange sections 111 to be extended and arranged within a preset area, thereby increasing the heat exchange area of ​​the first heat exchange section 11 and improving the heat exchange efficiency of the first heat exchange section 11. At the same time, the first bend 112 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 improving the heat exchange efficiency of the first heat exchange section 11.

[0209] Furthermore, the number of the first bends 112 can be one, two, three or more. The first bends 112 can make the first heat exchange section 11 arranged in a circuitous manner, thereby increasing the heat exchange area of ​​the first heat exchange channel 10 and improving the heat exchange efficiency of the first heat exchange channel 10.

[0210] In the above technical solution, by providing the first bend 112, the direction of fluid flow within the first heat exchange section 11 can be changed, achieving a smooth transition connection between the two first heat exchange sections 111, and realizing a circuitous extension of the first heat exchange channel 10. As a result, the contact area between a single battery cell and the first heat exchange channel 10 can be increased, thereby increasing the heat exchange area and improving the heat exchange efficiency of the first heat exchange channel 10. At the same time, the first bend 112 is arc-shaped, which can also 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 11. In addition, the provision of the first bend 112 also makes the structure of the first heat exchange section 11 more compact, and the overall space occupied is smaller, which is more conducive to the miniaturization design of the battery 1000 and ensures the volume energy density of the battery 1000.

[0211] According to some embodiments of the present application, as shown in FIG. 7 to FIG. 13 , the first bending portion 112 may be in a semicircular arc shape.

[0212] That is to say, the first bend portion 112 can extend along a semicircular arc line. Specifically, the first bend portion 112 can extend along a semicircular arc line that is raised in the direction away from the two first heat exchange portions 111 connected by the first bend portion 112. The angle between the inlet and outlet of the first bend portion 112 is 180°, and the flow directions at the outlet and inlet positions of the first bend portion 112 are opposite, so that the two adjacent first heat exchange portions 111 are closer together, and the structure of the entire first heat exchange section 11 is more compact and reliable. Among them, the first bend portion 112 is used to connect two first heat exchange portions 111 that are parallel to each other and arranged at intervals. In other embodiments, the bending degree of the first bend portion 112 can also be adjusted according to needs, for example, it can be 150°, 135°, etc., and the embodiments of the present application are not limited thereto.

[0213] The two first heat exchange parts 111 are connected through the first bending part 112 to form a "U"-shaped heat exchange channel. The first heat exchange section 11 can include one or more "U"-shaped heat exchange channels. Multiple "U"-shaped heat exchange channels are connected in sequence, and the connected "U"-shaped heat exchange channels are connected through the first bending part 112.

[0214] In the above technical solution, by setting the first bending portion 112 to be semicircular, the design diversity of the heat exchange flow channel can be increased, thereby improving the compatibility of the heat exchange component 100 and the battery 1000; at the same time, the semicircular structure is relatively simple, thereby reducing the production difficulty of the heat exchange component 100 and improving the production speed of the heat exchange component 100.

[0215] According to some embodiments of the present application, as shown in Figures 7 to 11 and 13, the second heat exchange section 12 may include: a second heat exchange part 121, a third heat exchange part 122 and a fourth heat exchange part 125, the second heat exchange part 121 extends along the first side circumference of the first heat exchange section 11, the third heat exchange part 122 is connected between the second heat exchange part 121 and the first heat exchange section 11, and extends along the second side circumference of the first heat exchange section 11, the first end of the third heat exchange part 122 is connected to the second heat exchange part 121 at an angle, and the second end of the third heat exchange part 122 is connected to the first heat exchange section 11 at an angle; the fourth heat exchange part 125 is in communication with the second heat exchange part 121, is connected to the second heat exchange part 121 at an angle, and extends along the third side circumference of the first heat exchange section 11.

[0216] It can be understood that the fourth heat exchange part 125 is connected to the end of the second heat exchange part 121 away from the third heat exchange part 122, the fourth heat exchange part 125, the second heat exchange part 121 and the third heat exchange part 122 are connected in sequence to form a U-shaped area 120, and the first heat exchange section 11 is arranged in the U-shaped area 120 and is connected to the end of the third heat exchange part 122 away from the second heat exchange part 121.

[0217] The first end of the third heat exchange portion 122 is connected to the second heat exchange portion 121 at an angle. That is, the third heat exchange portion 122 is connected to the second heat exchange portion 121, and the third heat exchange portion 122 and the second heat exchange portion 121 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 122 and the second heat exchange portion 121 can be connected at an angle of 30°, 45°, 60°, 90°, 120°, 135°, 150°, etc.

[0218] The second end of the third heat exchange section 122 is connected to the first heat exchange section 11 at an angle; that is, the second end of the third heat exchange section 122 is connected to the second heat exchange section 121, and the second end of the third heat exchange section 122 is arranged at an angle greater than 0° and less than 180° to the first heat exchange section 11. For example, the second end of the third heat exchange section 122 can be connected to the first heat exchange section 11 at an angle of 30°, 45°, 60°, 90°, 120°, 135°, 150°, and so on.

[0219] The fourth heat exchange portion 125 is in communication with the second heat exchange portion 121 and is connected to the second heat exchange portion 121 at an angle. That is, the fourth heat exchange portion 125 is connected to the second heat exchange portion 121 at an angle greater than 0° and less than 180°. For example, the fourth heat exchange portion 125 is connected to the second heat exchange portion 121 at an angle of 30°, 45°, 60°, 90°, 120°, 135°, 150°, etc.

[0220] It should be noted that this embodiment limits the second heat exchange section 12 to be arranged on three sides of the circumference of the first heat exchange section 11, and does not limit the specific positions of the second heat exchange section 121, the third heat exchange section 122 and the fourth heat exchange section 125 relative to the first heat exchange section 11. Therefore, the specific positions of the second heat exchange section 121, the third heat exchange section 122 and the fourth heat exchange section 125 can be designed according to actual conditions. For example, if the second heat exchange section 121 can be arranged on one side of the first heat exchange section 11 in the first direction, the third heat exchange section 122 and the fourth heat exchange section 125 are respectively arranged on both sides of the first heat exchange section 11 in the second direction; if the second heat exchange section 121 is arranged on one side of the first heat exchange section 11 in the second direction, the third heat exchange section 122 and the fourth heat exchange section 125 are respectively arranged on both sides of the first heat exchange section 11 in the first direction.

[0221] In the above technical solution, by arranging the second heat exchange part 121, the third heat exchange part 122 and the fourth heat exchange part 125 on three sides of the first heat exchange section 11 respectively, the second heat exchange section 12 can surround the first heat exchange section 11, thereby increasing the compactness of the arrangement of the first heat exchange channel 10, realizing the miniaturization of the structure of the first heat exchange channel 10, and thus being beneficial to improving the volume energy density of the battery 1000. At the same time, the structure of the first heat exchange channel 10 can also be simplified, facilitating the processing and production of the heat exchange component 100.

[0222] According to some embodiments of the present application, as shown in Figures 7 to 13, the first heat exchange section 11 may include a plurality of first heat exchange parts 111, and the plurality of first heat exchange parts 111 are bent and connected in sequence in the first direction; wherein, the second heat exchange part 121 is located on one side of the plurality of first heat exchange parts 111 along the first direction, and the third heat exchange part 122 is located on one side of the plurality of first heat exchange parts 111 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 122 is connected to one end of the second heat exchange part 121 along the second direction, and a second end of the third heat exchange part 122 is connected to one of the plurality of first heat exchange parts 111 farthest from the second heat exchange part 121 along the first direction, and a fourth heat exchange part 125 is located on the other side of the plurality of first heat exchange parts 111 along the second direction, one end of the fourth heat exchange part 125 is connected to one end of the second heat exchange part 121 away from the third heat exchange part 122, and the other end of the fourth heat exchange part 125 extends along the first direction toward a direction away from the second heat exchange part 121.

[0223] The plurality of first heat exchange portions 111 are connected by bending in sequence in the first direction. That is, the plurality of first heat exchange portions 111 are arranged sequentially in the first direction, and two adjacent and connected first heat exchange portions 111 are connected by bending in the first direction. The first heat exchange portions 111 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.

[0224] It can be understood that the fourth heat exchange part 125, the second heat exchange part 121, the third heat exchange part 122 and the first heat exchange part 111 farthest from the second heat exchange part 121 are connected in sequence, and multiple first heat exchange parts 111 are arranged at intervals along the first direction and connected in sequence. In this way, the fluid can flow through the fourth heat exchange part 125, the second heat exchange part 121 and the third heat exchange part 122 in sequence, and then enter the first heat exchange section 11. In the first heat exchange section 11, the fluid first passes through the first heat exchange part 111 farthest from the second heat exchange part 121, and finally flows to the first heat exchange part 111 closest to the second heat exchange part 121; or, the fluid can first flow into the first heat exchange section 11. In the first heat exchange section 11, the fluid first flows through the first heat exchange part 111 closest to the second heat exchange part 121, flows out from the first heat exchange part 111 farthest from the second heat exchange part 121 and flows to the third heat exchange part 122, and then flows through the second heat exchange part 121 and the fourth heat exchange part 125 in sequence through the third heat exchange part 122.

[0225] In addition, “the first direction and the second direction are arranged at an angle” is intended to illustrate that the first direction and the second direction can be arranged vertically, or can be arranged non-vertically so as to only intersect. For example, the first direction and the second direction can be arranged at an angle of 30°, 60°, 80°, 120°, 150° or 170°.

[0226] For example, as shown in FIG9 , the first direction may be the length direction of the battery cell 201 , ie, the direction Y1 shown in FIG9 , and the second direction may be the thickness direction of the battery cell 201 , ie, the direction X1 shown in FIG9 . Among them, taking the first heat exchange channel 10 arranged in the Y1 direction away from the coordinate origin in the figure as an example, the first heat exchange part 111 extends in a straight line along the X1 direction, and multiple first heat exchange parts 111 are arranged at intervals in the Y1 direction. The second heat exchange part 121 is arranged on the side of the multiple first heat exchange parts 111 away from the coordinate origin along the Y1 direction and extends in a straight line in the X1 direction, and is used to exchange heat with the edge of the battery assembly 200 in the Y1 direction away from the coordinate origin. The third heat exchange part 122 is arranged on the side of the multiple first heat exchange parts 111 close to the coordinate origin along the X1 direction and extends in a straight line in the Y1 direction. The third heat exchange part 122 is used to exchange heat with the edge of the battery assembly 200 in the X1 direction close to the coordinate origin. The fourth heat exchange part 125 is arranged on the side of the multiple first heat exchange parts 111 away from the coordinate origin along the X1 direction and extends in a straight line in the Y1 direction. The fourth heat exchange part 125 can be used to exchange heat with the edge of the battery assembly 200 in the X1 direction away from the coordinate origin.

[0227] In the above technical solution, by setting up multiple first heat exchange parts 111 to bend and connect in sequence in the first direction, the second heat exchange part 121 is located on one side of the multiple first heat exchange parts 111 along the first direction, the third heat exchange part 122 is located on one side of the multiple first heat exchange parts 111 along the second direction, and the fourth heat exchange part 125 is located on the other side of the multiple first heat exchange parts 111 along the second direction. The positional relationship among the second heat exchange part 121, the third heat exchange part 122, the fourth heat exchange part 125 and the first heat exchange part 111 is limited, the layout of the first heat exchange channel 10 is further limited, the structure of the first heat exchange channel 10 is simplified, and processing and manufacturing are facilitated.

[0228] According to some specific embodiments of the present application, as shown in Figures 9-11 and 13, the third heat exchange part 122 and the fourth heat exchange part 125 are extended along the first direction (for example, the Y1 direction shown in Figure 9), and the first heat exchange part 111 and the second heat exchange part 121 are both extended along the second direction.

[0229] Furthermore, the third heat exchange portion 122 and the fourth heat exchange portion 125 can both extend linearly along the first direction, and the first heat exchange portion 111 and the second heat exchange portion 121 can both extend linearly along the second direction. The linear structure is simple, easy to produce, and convenient to arrange, thereby further reducing the production complexity and production cost of the first heat exchange channel 10.

[0230] In the above technical solution, by arranging the third heat exchange part 122 and the fourth heat exchange part 125 to extend along the first direction, the first heat exchange part 111 and the second heat exchange part 121 are both extended along the second direction, which can be beneficial to the circuitous arrangement of the first heat exchange channel 10, thereby reducing the production difficulty of the first heat exchange channel 10 and reducing the production cost of the heat exchange component 100.

[0231] According to some examples of the present application, as shown in Figures 9-11 and 13, the third heat exchange part 122 and the fourth heat exchange part 125 are both extended along the first direction. In the first direction, the length b1 of the fourth heat exchange part 125 is less than or equal to the length a1 of the third heat exchange part 122.

[0232] Among them, when the length b1 of the fourth heat exchange part 125 is equal to the length a1 of the third heat exchange part 122, the fourth heat exchange part 125, the second heat exchange part 121 and the third heat exchange part 122 are connected in sequence to form a standard U-shaped flow channel; when the length b1 of the fourth heat exchange part 125 is less than the length a1 of the third heat exchange part 122, it can be beneficial to avoid other flow channel sections of the first heat exchange flow channel 10 (for example, avoiding the first inlet and outlet section 15 shown in Figure 9), avoid other heat exchange flow channels or avoid other components, thereby being beneficial to the layout of the first heat exchange flow channel 10 and the compact structure.

[0233] In the above technical solution, by setting the length of the fourth heat exchange part 125 equal to the length of the third heat exchange part 122, the sizes of the two ends of the U-shaped area 120 can be made close, which is beneficial to controlling the temperature difference of the battery cells 201 at both ends of the battery assembly 200 in the second direction, and improving the temperature uniformity of the battery assembly 200; by setting the length of the fourth heat exchange part 125 to be smaller than the length of the third heat exchange part 122 in the first direction, it can be facilitated to connect the fourth heat exchange part 125 to the collector, and the fourth heat exchange part 125 can also avoid other flow channel sections, other flow channel structures or other components of the first heat exchange channel 10.

[0234] According to some specific embodiments of the present application, as shown in Figures 9 to 11, the fourth heat exchange portion 125 extends along the first direction and extends to a position close to one of the multiple first heat exchange portions 111 that is farthest from the second heat exchange portion 121.

[0235] Specifically, the fourth heat exchange part 125 extends along the first direction, one end of the fourth heat exchange part 125 is connected to the second heat exchange part 121, and the other end of the fourth heat exchange part 125 extends to a position close to one of the multiple first heat exchange parts 111 that is farthest from the second heat exchange part 121. That is, the other end of the fourth heat exchange part 125 extends to be flush with the first heat exchange part 111 farthest from the second heat exchange part 121, or, the other end of the fourth heat exchange part 125 extends to be close to the first heat exchange part 111 farthest from the second heat exchange part 121, or, the other end of the fourth heat exchange part 125 extends to exceed the first heat exchange part 111 farthest from the second heat exchange part 121.

[0236] In this way, the length of the fourth heat exchange portion 125 can be increased, the heat exchange area between the fourth heat exchange portion 125 and the battery assembly 200 can be increased, the heat exchange effect of the heat exchange element 100 can be further improved, and it is also beneficial to the layout of the first heat exchange channel 10.

[0237] In the above technical solution, by setting the fourth heat exchange part 125 to extend along the first direction and extend to a position close to the one of the multiple first heat exchange parts 111 that is farthest from the second heat exchange part 121, the heat exchange area of ​​the fourth heat exchange part 125 can be increased, so that the first heat exchange channel 10 can exchange heat with the multiple battery cells 201 arranged corresponding to the first heat exchange channel 10 as much as possible, thereby improving the comprehensiveness of heat exchange of the first heat exchange channel 10, and further improving the heat exchange effect of the battery 1000.

[0238] According to some embodiments of the present application, as shown in Figure 12, the first heat exchange section 11 may include a plurality of first heat exchange parts 111, and the plurality of first heat exchange parts 111 are bent and connected in sequence in the first direction; wherein, the second heat exchange part 121 is located on one side of the plurality of first heat exchange parts 111 along the second direction, and the third heat exchange part 122 is located on one side of the plurality of first heat exchange parts 111 along the first direction, and the first direction and the second direction are arranged at an angle; a first end of the third heat exchange part 122 is connected to one end of the second heat exchange part 121 along the first direction, and a second end of the third heat exchange part 122 is connected to the one of the plurality of first heat exchange parts 111 closest to the third heat exchange part 122 along the first direction, and a fourth heat exchange part 125 is located on the other side of the plurality of first heat exchange parts 111 along the first direction, one end of the fourth heat exchange part 125 is connected to one end of the second heat exchange part 121 away from the third heat exchange part 122, and the other end of the fourth heat exchange part 125 extends along the second direction toward a direction away from the second heat exchange part 121.

[0239] The plurality of first heat exchange portions 111 are connected by bending in sequence in the first direction. That is, the plurality of first heat exchange portions 111 are arranged sequentially in the first direction, and two adjacent and connected first heat exchange portions 111 are connected by bending in the first direction. The first heat exchange portions 111 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.

[0240] It can be understood that the fourth heat exchange part 125, the second heat exchange part 121 and the third heat exchange part 122 are connected in sequence with the first heat exchange part 111 closest to the third heat exchange part 122, and multiple first heat exchange parts 111 are arranged at intervals along the first direction and connected in sequence. In this way, the fluid can flow through the fourth heat exchange part 125, the second heat exchange part 121 and the third heat exchange part 122 in sequence, and then enter the first heat exchange section 11. In the first heat exchange section 11, the fluid first passes through the first heat exchange part 111 closest to the third heat exchange part 122, and finally flows to the first heat exchange part 111 farthest from the third heat exchange part 122; or, the fluid can first flow into the first heat exchange section 11. In the first heat exchange section 11, the fluid first flows through the first heat exchange part 111 farthest from the third heat exchange part 122, flows out from the first heat exchange part 111 closest to the third heat exchange part 122, and then flows through the second heat exchange part 121 and the fourth heat exchange part 125 in sequence through the third heat exchange part 122.

[0241] In addition, “the first direction and the second direction are arranged at an angle” is intended to illustrate that the first direction and the second direction can be arranged vertically, or can be arranged non-vertically so as to only intersect. For example, the first direction and the second direction can be arranged at an angle of 30°, 60°, 80°, 120°, 150° or 170°.

[0242] For example, as shown in FIG9 , the first direction may be the length direction of the battery cell 201, that is, the direction of Y1 shown in FIG9 , and the second direction may be the thickness direction of the battery cell 201, that is, the direction of X1 shown in FIG9 . Taking the first heat exchange channel 10 arranged in the Y1 direction away from the coordinate origin in the figure as an example, the first heat exchange portion 111 extends straight along the X1 direction, and the plurality of first heat exchange portions 111 are arranged at intervals in the Y1 direction. The second heat exchange portion 121 is arranged on one side of the plurality of first heat exchange portions 111 close to the coordinate origin in the X1 direction and extends straight along the Y1 direction, and is used to exchange heat with an edge of the battery assembly 200 close to the coordinate origin in the X1 direction. The third heat exchange portion 122 is arranged on one side of the plurality of first heat exchange portions 111 away from the coordinate origin in the Y1 direction and extends straight along the X1 direction. The third heat exchange portion 122 is used to exchange heat with an edge of the battery assembly 200 away from the coordinate origin in the Y1 direction. The fourth heat exchange portion 125 is arranged on one side of the plurality of first heat exchange portions 111 The side close to the coordinate origin in the Y1 direction and extending in a straight line in the X1 direction can be used for heat exchange with the edge of the battery assembly 200 close to the coordinate origin in the Y1 direction.

[0243] In the above technical solution, by arranging the second heat exchange part 121 to be located on one side of the multiple first heat exchange parts 111 along the second direction, the third heat exchange part 122 to be located on one side of the multiple first heat exchange parts 111 along the first direction, and the fourth heat exchange part 125 to be located on the other side of the multiple first heat exchange parts 111 along the first direction, another layout of the first heat exchange channel 10 is defined. Thus, the diversity of the first heat exchange channel 10 can be increased so that it can meet the heat exchange requirements of different batteries 1000, simplify the structure of the first heat exchange channel 10, and facilitate processing and manufacturing.

[0244] According to some specific embodiments of the present application, as shown in Figure 12, the first heat exchange part 111, the third heat exchange part 122 and the fourth heat exchange part 125 extend along the second direction (for example, the X1 direction shown in Figure 12), and the second heat exchange part 121 extends along the first direction (for example, the Y1 direction shown in Figure 12).

[0245] Furthermore, the first heat exchange portion 111, the third heat exchange portion 122, and the fourth heat exchange portion 125 extend linearly along the second direction, and the second heat exchange portion 121 extends linearly along the first direction. The linear structure is simple, easy to produce, and convenient to arrange, thereby further reducing the production complexity and production cost of the first heat exchange channel 10.

[0246] In the above technical solution, by arranging the first heat exchange part 111, the third heat exchange part 122 and the fourth heat exchange part 125 to extend along the second direction, and the second heat exchange part 121 to extend along the first direction, it can be beneficial to the circuitous arrangement of the first heat exchange channel 10, thereby reducing the production difficulty of the first heat exchange channel 10 and reducing the production cost of the heat exchange component 100; at the same time, through such an arrangement, the structure of the first heat exchange channel 10 is also made more compact and reliable.

[0247] According to some examples of the present application, as shown in Figure 12, the first heat exchange part 111 and the third heat exchange part 122 extend along the second direction, the second heat exchange part 121 extends along the first direction, and in the second direction, the length a2 of the third heat exchange part 122 is greater than or equal to the length c1 of the first heat exchange part 111.

[0248] In the above technical solution, by setting the length a2 of the third heat exchange part 122 in the second direction to be greater than the length c1 of the first heat exchange part 111, the first heat exchange section 11 can be enclosed in the U-shaped area 120 of the second heat exchange section 12, increasing the length of the third heat exchange part 122, and increasing the heat exchange area of ​​the third heat exchange part 122, so that the second heat exchange section 12 can enclose a larger U-shaped area 120, thereby improving the heat exchange effect of the heat exchange component 100; by setting the length a2 of the third heat exchange part 122 to be equal to the length c1 of the first heat exchange part 111, the length dimensions of the third heat exchange part 122 extending along the second direction of the first heat exchange channel 10 and the multiple first heat exchange parts 121 can be close, which is beneficial to controlling the temperature difference of the battery assembly 200 along the first direction and improving the temperature uniformity of the battery assembly 200.

[0249] According to some embodiments of the present application, as shown in Figures 7 to 11 and 13, the second heat exchange section 12 may further include: a second bending portion 123 and a third bending portion 124, the second bending portion 123 and the third bending portion 124 are both arc-shaped, and the second bending portion 123 is connected between the first end of the third heat exchange portion 122 and the second heat exchange portion 121, and the third bending portion 124 is connected between the second end of the third heat exchange portion 122 and the first heat exchange portion 111.

[0250] Among them, the second bending portion 123 and the third bending portion 124 are respectively used to connect the second heat exchange portion 121 and the third heat exchange portion 122 and the third heat exchange portion 122 and the first heat exchange portion 111, the second bending portion 123 is arc-shaped, that is, the second bending portion 123 extends along the arc line, and the fluid flow direction at both ends of the second bending portion 123 has a certain angle, the third bending portion 124 is arc-shaped, that is, the third bending portion 124 extends along the arc line, and the fluid flow direction at both ends of the third bending portion 124 has a certain angle.

[0251] Thus, the second bend 123 and the third bend 124 can change the flow direction of the fluid, allowing the second heat exchange section 12 to extend within a predetermined area and be used for heat exchange with the battery assembly 200. At the same time, the curved second bend 123 and the third bend 124 can reduce the flow resistance of the fluid and reduce the pressure drop, thereby increasing the flow rate of the fluid and further improving the heat exchange efficiency of the first heat exchange channel 10.

[0252] In the above technical solution, by providing the second bend 123 and the third bend 124, the flow direction of the fluid in the first heat exchange channel 10 can be changed, and a smooth transition connection between the third heat exchange section 122 and the second heat exchange section 121 can be achieved, and a smooth transition connection between the third heat exchange section 122 and the first heat exchange section 111 can be achieved. As a result, the second bend 123 and the third bend 124 can reduce the flow resistance of the fluid flow in the second heat exchange section 12, reduce the pressure drop, increase the flow rate of the fluid, and further increase the heat exchange efficiency of the first heat exchange channel 10. In addition, by providing the second bend 123 and the third bend 124, a circuitous arrangement of the first heat exchange channel 10 can be achieved. In this way, the heat exchange area of ​​the first heat exchange channel 10 can be increased and the structure can be more compact, which is more conducive to the miniaturization design of the battery 1000 and improves the volume energy density of the battery 1000.

[0253] According to some embodiments of the present application, as shown in FIG. 7 to FIG. 11 and FIG. 13 , the second bending portion 123 may be in the shape of a quarter circular arc.

[0254] That is, the second bend 123 can extend along a semicircular arc line. Specifically, the first bend 112 can extend along a quarter-circular arc line that is convex away from the first connecting section. The angle between the inlet and outlet of the second bend 123 can be 90°. The second bend 123 is similar to a 90° elbow in a pipe material, which can change the direction of the flow channel so that the fluid flow direction changes by 90° after passing through the second bend 123. For example, the flow direction of the liquid can be changed from the Y1 direction to the X1 direction, or from the X1 direction to the Y1 direction. Among them, the second bend 123 connects the second heat exchange section 121 and the third heat exchange section 122. At this time, the second heat exchange section 121 and the third heat exchange section 122 are arranged perpendicular to each other. In this way, the layout of the second heat exchange section 12 can be more regular, and the flow channel of the second heat exchange section 12 can be more closely aligned with the layout of the battery assembly 200, thereby increasing the heat exchange effect of the second heat exchange section 12 on the battery assembly 200.

[0255] In other embodiments, the bending degree of the second bending portion 123 can be adjusted according to needs, for example, it can be 50°, 80°, 120°, 135°, 150°, etc., and the embodiments of the present application are not limited thereto.

[0256] In the above technical solution, by setting the second bending portion 123 to be a quarter-circular arc shape, the flow direction of the fluid can be changed from the original flow direction to perpendicular to the original flow direction after passing through the second bending portion 123; at the same time, the arc shape can also reduce the resistance to fluid flow, so that the fluid can flow smoothly in the second bending portion 123, effectively preventing the fluid from flowing too slowly and causing a decrease in heat exchange efficiency.

[0257] According to some embodiments of the present application, as shown in FIG. 7 to FIG. 11 and FIG. 13 , the third bending portion 124 is in the shape of a quarter circular arc.

[0258] That is, the third bend 124 can extend along a semicircular arc line. Specifically, the third bend 124 can extend along a quarter-circular arc line that is convex away from the first connecting section. The angle between the inlet and outlet of the third bend 124 is 90°. The third bend 124 is similar to a 90° elbow in a pipe material, which can change the direction of the flow channel so that the fluid flow direction changes by 90° after passing through the third bend 124. For example, the flow direction of the liquid can be changed from the Y1 direction to the X1 direction, or from the X1 direction to the Y1 direction. Among them, the third bend 124 connects the third heat exchange part 122 and the first heat exchange part 111. At this time, the third heat exchange part 122 and the first heat exchange part 111 are arranged perpendicular to each other. In this way, the layout of the first heat exchange channel 10 can be made more regular, and the first heat exchange channel 10 can be more closely aligned with the layout of the battery assembly 200, thereby increasing the heat exchange effect of the first heat exchange channel on the battery assembly 200.

[0259] In other embodiments, the bending degree of the third bending portion 124 can be adjusted according to needs, for example, it can be 50°, 80°, 120°, 135°, 150°, etc., and the embodiments of the present application are not limited thereto.

[0260] In the above technical solution, by setting the third bending portion 124 to be a quarter-circular arc shape, the flow direction of the fluid can be changed from the original flow direction to a direction perpendicular to the original flow direction after passing through the third bending portion 124; at the same time, the arc-shaped third bending portion 124 can also reduce the resistance to fluid flow, so that the fluid can flow smoothly in the third bending portion 124, effectively preventing the fluid from flowing too slowly and causing a decrease in heat exchange efficiency.

[0261] According to some embodiments of the present application, as shown in Figure 10, the second heat exchange section 12 may further include: a fifth heat exchange portion 127, which extends along the fourth side periphery of the first heat exchange section 11 and closes at least part of the opening of the U-shaped area 120 formed by the second heat exchange portion 121, the third heat exchange portion 122 and the fourth heat exchange portion 125.

[0262] It can be understood that the fifth heat exchange part 127 can close part of the opening of the U-shaped area 120, or completely close the opening of the U-shaped area 120. Thus, the second heat exchange section 12 can basically cover the peripheral position of the battery assembly 200 and exchange heat with the periphery of the battery assembly 200. In this way, the second heat exchange section 12 can exchange heat with all or most of the peripheries of the battery assembly 200. Thus, the structure of the first heat exchange channel 10 can be set according to the actual arrangement of the battery assembly 200 or the heat exchange requirements, and the second heat exchange section 12 with the fifth heat exchange part 127 can be set to optimize the heat exchange structure of the first heat exchange channel 10 and improve the heat exchange efficiency.

[0263] In the above technical solution, by setting the fifth heat exchange part 127, the second heat exchange section 12 can exchange heat on the four sides of the battery assembly 200. In this way, the second heat exchange section 12 of the first heat exchange channel 10 can be used to exchange heat on the four sides of the battery assembly 200. Therefore, the heat exchange effect of the four sides of the battery assembly 200 can be improved, and the temperature uniformity of the battery assembly 200 can be improved.

[0264] According to some embodiments of the present application, as shown in Figure 10, the fifth heat exchange part 127 is arranged opposite to the second heat exchange part 121, and the fifth heat exchange part 127 is connected between the second end of the third heat exchange part 122 and the first heat exchange section 11, and is connected to the third heat exchange part 122 at an angle, and is connected to the first heat exchange section 11 at an angle.

[0265] It should be noted that, in the above embodiment, the second heat exchange part 121 is arranged on one side of the first heat exchange section 11 in the first direction (for example, the side of the multiple first heat exchange parts 111 shown in Figure 10 along the Y1 direction away from the coordinate origin), and the fifth heat exchange part 127 is arranged opposite to the second heat exchange part 121, that is, the fifth heat exchange part 127 is arranged on the other side of the first heat exchange section 11 in the first direction (for example, the side of the multiple first heat exchange parts 111 shown in Figure 10 along the Y1 direction close to the coordinate origin), and the third heat exchange part 122 is arranged on one side of the first heat exchange section 11 in the second direction of the first heat exchange section 11 (for example, the side of the multiple first heat exchange parts 111 shown in Figure 10 along the X1 direction close to the coordinate origin), and the two ends of the third heat exchange part 122 in the Y1 direction are respectively connected to the second heat exchange part 121 and the fifth heat exchange part 127.

[0266] The fifth heat exchange section 127 is connected to the third heat exchange section 122 at an angle. For example, the fifth heat exchange section 127 is connected to the third heat exchange section 122 at an angle greater than 0° and less than or equal to 180°. For example, the angle between the fifth heat exchange section 127 and the third heat exchange section 122 is 30°, 45°, 60°, 90°, 120°, 135°, or 150°, etc. The fifth heat exchange section 127 is connected to the first heat exchange section 11 at an angle. For example, the fifth heat exchange section 127 is connected to the first heat exchange section 11 at an angle greater than 0° and less than or equal to 180°, etc. For example, the angle between the fifth heat exchange section 127 and the third heat exchange section 122 is 30°, 45°, 60°, 90°, 120°, 135°, 150°, etc.

[0267] Furthermore, the fifth heat exchange portion 127 and the third heat exchange portion 122 may be connected via an arc segment. For example, the fifth heat exchange portion 127 and the third heat exchange portion 122 may be connected via a quarter-circle arc.

[0268] Furthermore, the fifth heat exchange portion 127 and the first heat exchange section 11 may be connected via an arc segment. For example, the fifth heat exchange portion 127 and the first heat exchange section 11 may be connected via a semicircular arc.

[0269] In the above technical solution, by arranging the fifth heat exchange part 127 relative to the second heat exchange part 121 and connecting the fifth heat exchange part 127 between the third heat exchange part 122 and the first heat exchange section 11, the structure of the first heat exchange channel 10 can be further optimized according to the heat exchange requirements of the battery assembly 200.

[0270] In other specific embodiments, referring to Figure 10, the fifth heat exchange part 127 is arranged opposite to the second heat exchange part 121, one end of the fifth heat exchange part 127 is connected to the end of the fourth heat exchange part 125 away from the second heat exchange part 121, and the fifth heat exchange part 127 is connected to the fourth heat exchange part 125 at an angle.

[0271] The fifth heat exchange portion 127 is connected to the fourth heat exchange portion 125 at an angle. For example, the fifth heat exchange portion 127 is connected to the fourth heat exchange portion 125 and is arranged at an angle greater than 0° and less than or equal to 180°. For example, the angle between the fifth heat exchange portion 127 and the third heat exchange portion 122 is 30°, 45°, 60°, 90°, 120°, 135°, or 150°, etc.

[0272] For example, referring to Figure 12, the second heat exchange part 121 and the fifth heat exchange part 127 are respectively arranged on both sides of the first heat exchange section 11 in the X1 direction, the third heat exchange part 122 and the fourth heat exchange part 125 are respectively arranged on both sides of the first heat exchange section 11 in the Y1 direction, the fifth heat exchange part 127 extends along the Y1 direction, and the end of the fifth heat exchange part 127 close to the coordinate origin in the Y1 direction is connected to the fourth heat exchange part 125, and the end of the fifth heat exchange section away from the coordinate origin in the Y1 direction extends toward the third heat exchange section 13.

[0273] The fifth heat exchange portion 127 and the fourth heat exchange portion 125 may be connected in an arc, for example, the fifth heat exchange portion 127 and the fourth heat exchange portion 125 may be connected in a quarter arc.

[0274] In the above technical solution, by arranging the fifth heat exchange part 127 relative to the second heat exchange part 121 and connecting the fifth heat exchange part 127 to the fourth heat exchange part 125, the structure of the first heat exchange channel 10 can be further optimized according to the heat exchange requirements of the battery assembly 200.

[0275] In the above technical solution, by arranging the fifth heat exchange part 127 relative to the second heat exchange part 121, and the fifth heat exchange part 127 is connected between the second end of the third heat exchange part 122 and the first heat exchange section 11, or one end of the fifth heat exchange part 127 is connected to the end of the fourth heat exchange part 125 away from the second heat exchange part 121, it is possible to realize the arrangement of multiple heat exchange channels, thereby meeting the heat exchange requirements of various batteries 1000.

[0276] According to some embodiments of the present application, as shown in Figures 9 to 13, the first heat exchange channel 10 may further include: a third heat exchange section 13, the first heat exchange section 11 is connected between the third heat exchange section 13 and the second heat exchange section 12, and the third heat exchange section 13 is connected to the first heat exchange section 11 at an angle.

[0277] That is to say, in the first heat exchange channel 10, the second heat exchange section 12, the first heat exchange section 11 and the third heat exchange section 13 are connected in sequence, and the fluid can flow from the second heat exchange section 12 through the first heat exchange section 11 to the third heat exchange section 13, or from the third heat exchange section 13 through the first heat exchange section 11 to the second heat exchange section 12.

[0278] The third heat exchange section 13 is connected to the first heat exchange section 11 and is arranged at an angle greater than 0° and less than or equal to 180°. For example, the angle between the third heat exchange section 13 and the first heat exchange section 11 is 30°, 45°, 60°, 90°, 120°, 135°, or 150°, etc.

[0279] In the above technical solution, by providing the third heat exchange section 13 , the heat exchange area of ​​the first heat exchange channel 10 can be further increased, thereby further improving the heat exchange effect of the first heat exchange channel 10 .

[0280] According to some embodiments of the present application, as shown in Figures 9 to 13, the first heat exchange section 11 includes a plurality of first heat exchange parts 111, and the plurality of first heat exchange parts 111 are connected sequentially in a first direction (for example, the Y1 direction shown in Figure 9); the third heat exchange section 13 is arranged on a side of the first heat exchange section 11 away from the third heat exchange part 122, and the third heat exchange section 13 is connected to the one of the plurality of first heat exchange parts 111 that is closest to the second heat exchange part 121 along the first direction.

[0281] Specifically, the third heat exchange segment 13 is arranged adjacent to the fourth heat exchange portion 125 and between the fourth heat exchange portion 125 and the first heat exchange portion 111. Thus, the third heat exchange segment 13 is also arranged circumferentially outside the first heat exchange segment 11. This increases the circumferential heat exchange area of ​​the first heat exchange channel 10 and improves the heat exchange efficiency of the first heat exchange channel 10 at the circumferential side.

[0282] Furthermore, the third heat exchange section 13 and the fourth heat exchange section 125 can be arranged inside and outside of the same side of the first heat exchange section 11, thereby further increasing the heat exchange area at that location and improving heat exchange efficiency. Furthermore, because the third heat exchange section 13 and the fourth heat exchange section 125 are located at opposite ends of the first flow channel in the direction of fluid flow, they can exchange heat with the same area of ​​the battery assembly 200, thereby improving temperature uniformity in that area.

[0283] Furthermore, the third heat exchange section 13 is connected to the one of the multiple first heat exchange parts 111 that is closest to the second heat exchange part 121 along the first direction, the multiple first heat exchange parts 111 are connected sequentially in the first direction, and the third heat exchange part 122 is connected to the one of the multiple first heat exchange parts 111 that is farthest from the second heat exchange part 121 along the first direction. In this way, when heat exchange is carried out with the battery assembly 200, in the first heat exchange channel 10, the temperature of the fluid in the first heat exchange part 111 closest to the second heat exchange part 121 and the fluid in the third heat exchange section 13, as well as the temperature of the fluid in the second heat exchange part 121 and the fourth heat exchange part 125 are respectively the relatively highest temperature and the relatively lowest temperature in the first heat exchange channel 10, while the temperature of the remaining parts is in the middle.

[0284] Due to the heat dissipation effect of the battery 1000, the edge temperature of the battery 1000 is lower than the middle temperature. In this way, the second heat exchange part 121 and the first heat exchange part 111 closest to the second heat exchange part 121 exchange heat in the same area, and the third heat exchange section 13 and the fourth heat exchange part 125 exchange heat in the same area, thereby further improving the temperature uniformity in the battery assembly 200, balancing the temperature difference of the battery assembly 200, and further improving the temperature uniformity of the battery assembly 200.

[0285] In the above technical solution, by adding a third heat exchange section 13 and connecting the third heat exchange section 13 to the one of the multiple first heat exchange parts 111 that is closest to the second heat exchange part 121 along the first direction, the heat exchange area can be increased, the temperature difference of the battery assembly 200 can be balanced, and the temperature uniformity of the battery assembly 200 can be improved.

[0286] According to some embodiments of the present application, as shown in Figures 9 to 13, the third heat exchange section 13 extends along the first direction toward a direction away from the second heat exchange part 121, and the first heat exchange part 111 extends along the second direction, wherein the first direction and the second direction are set at an angle.

[0287] Specifically, one end of the third heat exchange part 122 is connected to one of the multiple first heat exchange parts 111 that is farthest from the second heat exchange part 121 along the first direction, and the other end of the third heat exchange part 122 extends toward the first heat exchange part 111 farthest from the second heat exchange part 121. At the same time, the fourth heat exchange part 125 also extends toward the first heat exchange part 111 farthest from the second heat exchange part 121.

[0288] Furthermore, the third heat exchange section 13 is arranged on a side of the first heat exchange section 11 away from the third heat exchange portion 122. In this case, the third heat exchange section 13 and the fourth heat exchange portion 125 are arranged on the same outer side of the first heat exchange portion 111 in the circumferential direction. The third heat exchange section 13 and the fourth heat exchange portion 125 are respectively located at opposite ends of the first flow channel in the direction of fluid flow. When the third heat exchange section 13 and the fourth heat exchange portion 125 jointly exchange heat with the same area of ​​the battery assembly 200, they can equalize temperature differences at the edge of the battery assembly 200, thereby improving temperature uniformity at the edge of the battery assembly 200.

[0289] In the above technical solution, by setting the third heat exchange section 13 to extend along the first direction away from the second heat exchange part 121, the heat exchange area of ​​the first heat exchange channel 10 can be increased, and the heat exchange effect of the first heat exchange channel 10 on the battery cell 201 can be improved; at the same time, when the third heat exchange section 13 and the fourth heat exchange part 125 jointly exchange heat with the battery assembly 200, the temperature difference in the edge area of ​​the battery assembly 200 can be balanced, thereby improving the temperature uniformity at the edge of the battery assembly 200.

[0290] According to some embodiments of the present application, as shown in FIG. 9 to FIG. 12 , the third heat exchange section 13 extends along the first direction to a position close to one of the plurality of first heat exchange parts 111 that is farthest from the second heat exchange part 121 .

[0291] In the above technical solution, by setting the third heat exchange section 13 to extend along the first direction to a position close to the one of the multiple first heat exchange parts 111 that is farthest from the second heat exchange part 121, the length of the third heat exchange part 122 can be increased, the heat exchange area of ​​the third heat exchange part 122 can be increased, and the heat exchange effect of the first heat exchange channel 10 can be improved.

[0292] According to some embodiments of the present application, as shown in Figures 9 to 13, the first heat exchange channel 10 may further include: a fourth bending portion 14, which is arc-shaped and bent and connected between the third heat exchange section 13 and the first heat exchange portion 111.

[0293] The fourth bend 14 is arc-shaped, that is, it extends along an arc, and the fluid flow directions at both ends of the fourth bend 14 form a certain angle. As a result, the fourth bend 14 can change the flow direction of the fluid, thereby causing the third heat exchange section 13 to extend along a predetermined direction. Furthermore, 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 enhancing the heat exchange efficiency of the first heat exchange channel 10.

[0294] In the above technical solution, the provision of the fourth bend 14 can change the flow direction of the fluid between the third heat exchange section 13 and the first heat exchange section 111. At the same time, the curved fourth bend 14 can reduce the flow resistance of the fluid, reduce pressure drop, increase the flow rate of the fluid, and further increase the heat exchange efficiency of the first heat exchange channel 10. Furthermore, the provision of the fourth bend 14 can also achieve a circuitous arrangement of the first heat exchange channel 10. This can increase the heat exchange area of ​​the first heat exchange channel 10 and make the structure more compact, further facilitating the miniaturization of the battery 1000 and improving the volumetric energy density of the battery 1000.

[0295] According to some embodiments of the present application, as shown in FIG. 9 to FIG. 13 , the fourth bending portion 14 is in the shape of a quarter arc.

[0296] That is, the fourth bend 14 can extend along a semicircular arc. Specifically, the fourth bend 14 can extend along a quarter-circular arc that protrudes toward the connection between the second heat exchange portion 121 and the fourth heat exchange portion 125. The angle between the inlet and outlet of the fourth bend 14 is 90°. The fourth bend 14 is similar to a 90° elbow in a pipe material and can change the flow direction. After the fluid passes through the fourth bend 14, the fluid flow direction changes by 90°. For example, the fluid flow direction can be changed from the X1 direction to the Y1 direction, or from the Y1 direction to the X1 direction.

[0297] Furthermore, the fourth bend 14 connects the third heat exchange section 13 and the first heat exchange section 111. The third heat exchange section 13 and the first heat exchange section 111 can be arranged perpendicular to each other, wherein the first heat exchange section 111 extends along the second direction and the third heat exchange section 13 extends along the first direction, with the first direction being perpendicular to the second direction. This can make the layout of the first heat exchange channel 10 more regular, allowing the first heat exchange channel 10 to better fit the layout of the battery assembly 200, thereby increasing the heat exchange effect of the first heat exchange channel on the battery assembly 200.

[0298] In other embodiments, the bending degree of the fourth bending portion 14 can be adjusted according to needs, for example, it can be 50°, 80°, 120°, 135°, 150°, etc., and the embodiments of the present application are not limited thereto.

[0299] In the above technical solution, by setting the fourth bend 14 to be a quarter arc shape, the flow direction of the fluid can be changed from the original flow direction to perpendicular to the original flow direction after passing through the fourth bend 14; at the same time, the arc shape can also reduce the resistance to fluid flow, so that the fluid can flow smoothly in the fourth bend 14, effectively preventing the fluid from flowing too slowly and causing a decrease in heat exchange efficiency.

[0300] According to some embodiments of the present application, as shown in Figures 9 to 13, the first heat exchange channel 10 may further include: a first inlet and outlet section 15, one end of the first inlet and outlet section 15 is connected to the third heat exchange section 13 at an angle, and the other end of the first inlet and outlet section 15 forms a first inlet and outlet of the first heat exchange channel 10.

[0301] Among them, the first inlet and outlet is used for fluid inlet or outlet. When the first inlet and outlet is used for fluid inlet, the first inlet and outlet section 15 is used to transport the fluid to the third heat exchange section 13; when the first inlet and outlet is used for fluid outlet, the first inlet and outlet section 15 is used to guide the fluid after heat exchange out of the first heat exchange channel 10 through the first inlet and outlet.

[0302] The first inlet / outlet section 15 is connected to the third heat exchange section 13 at an angle. For example, the first inlet / outlet section 15 is connected to the third heat exchange section 13 and is arranged at an angle greater than 0° and less than or equal to 180°. For example, the angle between the first inlet / outlet section 15 and the third heat exchange section 13 is 30°, 45°, 60°, 90°, 120°, 135°, or 150°, etc.

[0303] In the above technical solution, by setting the first inlet and outlet section 15, the external pipeline can be facilitated so that the fluid can enter or discharge the first heat exchange channel 10. At the same time, it can also guide the fluid entering or discharging the first heat exchange channel 10, so that the fluid can enter or discharge quickly, thereby improving the heat exchange rate.

[0304] According to some embodiments of the present application, as shown in FIG. 9 to FIG. 13 , the first inlet and outlet section 15 extends along the second direction away from the first heat exchange section 11 , and the third heat exchange section 13 extends along the first direction.

[0305] It can be understood that there is a certain angle between the first inlet and outlet section 15 and the third heat exchange section 13, thereby forming a certain space on the side of the third heat exchange section 13 facing the first inlet and outlet section 15, which can be beneficial to the layout of other components in the battery 1000.

[0306] In the above technical solution, by setting the first inlet and outlet section 15 to extend along the second direction away from the first heat exchange section 11, the pipeline arrangement of the first heat exchange channel 10 can be made more reasonable and convenient for connection with external pipelines; at the same time, the first inlet and outlet can be made away from the battery assembly 200, which is beneficial to reduce the occurrence of damage to the battery assembly 200 due to water leakage at the first inlet and outlet.

[0307] According to some embodiments of the present application, as shown in Figures 7 to 13, the first heat exchange channel 10 may further include: a fifth bending portion 16, which is arc-shaped and bent and connected between the third heat exchange section 13 and the first inlet and outlet section 15.

[0308] Among them, the fifth bend 16 is arc-shaped, that is, the fifth bend 16 extends along the arc, and the fluid flow direction at both ends of the fifth bend 16 has a certain angle, thereby realizing the connection between the third heat exchange section 13 and the first inlet and outlet section 15, so that the fluid can flow smoothly from the third heat exchange section 13 to the first inlet and outlet section 15 or from the first inlet and outlet section 15 to the third heat exchange section 13, realizing the liquid inlet or outlet of the first inlet and outlet section 15; at the same time, the arc shape can also 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 channel 10.

[0309] In the above technical solution, by setting the fifth bend 16, the fluid can flow smoothly from the third heat exchange section 13 to the first inlet and outlet section 15 or from the first inlet and outlet section 15 to the third heat exchange section 13, thereby realizing the liquid inlet or liquid outlet of the first inlet and outlet section 15; at the same time, the arc shape of the fifth bend 16 can also 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 channel 10.

[0310] According to some embodiments of the present application, as shown in FIG. 9 to FIG. 13 , the fifth bending portion 16 is arc-shaped, and the central angle corresponding to the fifth bending portion 16 is greater than or equal to 90° and less than 180°.

[0311] For example, the central angle corresponding to the fifth bending portion 16 may be 90°, 120°, 150° or 170°.

[0312] As shown in Figure 9, the heat exchange element 100 includes two first heat exchange channels 10. The fifth bend 16 of the first heat exchange channel 10, located on the side away from the coordinate origin in the Y1 direction, is in the shape of a quarter circle. The third heat exchange section 13 is arranged perpendicular to the first inlet and outlet section 15. Simultaneously, the first inlet and outlet section 15 of the first heat exchange channel 10 located on the lower side includes a first extension section and a second extension section. The first extension section connects between the second extension section and the third heat exchange section 13. The first extension section extends along a straight line inclined relative to the second direction, and the second extension section extends along a straight line parallel to the second direction. The first extension section and the third heat exchange section 13 are connected by the fifth bend 16. The central angle corresponding to the arc line of the fifth bend 16 is greater than 90° and less than 135°.

[0313] In the above technical solution, by setting the fifth bend 16 to be arc-shaped, the resistance to fluid flow can be further reduced, so that the fluid can flow smoothly in the fifth bend 16, effectively preventing the fluid from flowing too slowly and causing a decrease in heat exchange efficiency; at the same time, the central angle corresponding to the fifth bend 16 is greater than or equal to 90° and less than 180°, and a certain space can also be formed on the side of the third heat exchange section 13 toward the first entrance and exit section 15, which can be beneficial to the arrangement of other components in the battery 1000 and improve the rationality of the layout of the battery 1000.

[0314] According to some embodiments of the present application, as shown in FIG. 7 to FIG. 13 , the second heat exchange section 12 further includes: a sixth bending portion 126 , and the sixth bending portion 126 is connected between the fourth heat exchange portion 125 and the second heat exchange portion 121 .

[0315] The sixth bend 126 is formed into an arc shape, that is, it extends along an arc, and the fluid flow directions at both ends of the sixth bend 126 form a certain angle. As a result, the sixth bend 126 can change the flow direction of the fluid, thereby allowing the second heat exchange portion 121 and the fourth heat exchange portion 125 to extend along a predetermined direction. At the same time, the arc-shaped sixth bend 126 can reduce the flow resistance of the fluid and reduce the pressure drop, thereby increasing the flow rate of the fluid and further improving the heat exchange efficiency of the first heat exchange channel 10.

[0316] In the above technical solution, by providing the sixth bend 126, the direction of fluid flow in the first heat exchange channel 10 can be changed, achieving a circuitous arrangement of the first heat exchange channel 10. This can increase the heat exchange area of ​​the first heat exchange channel 10 and improve the heat exchange efficiency of the first heat exchange channel 10. At the same time, the arc-shaped sixth bend 126 can also 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 channel 10. In addition, by providing the sixth bend 126, the second heat exchange section 12 can form a U-shaped area 120, thereby achieving the second heat exchange section 12 surrounding the first heat exchange section, thereby increasing the compactness of the arrangement of the first heat exchange channel 10 and achieving a miniaturized structure of the first heat exchange channel 10, which is conducive to improving the volume energy density of the battery.

[0317] According to some embodiments of the present application, as shown in FIG. 7 to FIG. 13 , the sixth bending portion 126 is in the shape of a quarter arc.

[0318] That is, the sixth bend 126 can extend along a semicircular arc line. Specifically, the sixth bend 126 can extend along a quarter-circular arc line that is raised away from the first heat exchange section 11. The angle between the inlet and outlet of the sixth bend 126 is 90°. The sixth bend 126 is similar to a 90° elbow in a pipe material. It can change the direction of the flow channel so that the fluid flow direction changes by 90° after passing through the sixth bend 126. For example, the flow direction of the liquid can be changed from the X1 direction to the Y1 direction, or from the Y1 direction to the X1 direction. Among them, the sixth bend 126 connects the second heat exchange section 121 and the fourth heat exchange section 125. At this time, the second heat exchange section 121 and the fourth heat exchange section 125 are arranged vertically. In this way, the layout of the second heat exchange section 12 can be made more regular, and the second heat exchange section 12 can be more closely aligned with the layout of the battery assembly 200, thereby increasing the heat exchange effect of the second heat exchange section 12 on the battery assembly 200.

[0319] In other embodiments, the bending degree of the sixth bending portion 126 can be adjusted according to needs, for example, it can be 50°, 80°, 120°, 135°, 150°, etc., and the embodiments of the present application are not limited thereto.

[0320] In the above technical solution, by setting the sixth bend 126 to be a quarter arc shape, the flow direction of the fluid can be changed from the original flow direction to perpendicular to the original flow direction after passing through the sixth bend 126; at the same time, the arc shape can further reduce the resistance to fluid flow, so that the fluid can flow smoothly in the sixth bend 126, effectively preventing the fluid from flowing too slowly and causing a decrease in heat exchange efficiency.

[0321] According to some embodiments of the present application, as shown in Figures 9 to 13, the first heat exchange channel 10 may further include: a second inlet and outlet section 17, one end of the second inlet and outlet section 17 is connected to the fourth heat exchange part 125 at an angle, and the other end of the second inlet and outlet section 17 forms a second inlet and outlet of the first heat exchange channel 10.

[0322] The second inlet and outlet are used for fluid inlet or outlet. When the second inlet and outlet are used for fluid inlet, the second inlet and outlet section 17 is used to transport the fluid into the third heat exchange section 13. When the second inlet and outlet are used for fluid outlet, the second inlet and outlet section 17 is used to guide the heat-exchanged fluid out of the first heat exchange channel 10 through the second inlet and outlet.

[0323] The second inlet / outlet section 17 is connected to the fourth heat exchange portion 125 at an angle. For example, the second inlet / outlet section 17 is connected to the fourth heat exchange portion 125 and is arranged at an angle greater than 0° and less than or equal to 180°. For example, the angle between the second inlet / outlet section 17 and the fourth heat exchange portion 125 is 30°, 45°, 60°, 90°, 120°, 135°, or 150°, etc.

[0324] In the above technical solution, by setting up the second inlet and outlet section 17, it can be beneficial to the external pipeline, so that the fluid can enter or discharge the first heat exchange channel 10, complete the heat exchange of the battery cell 201, and at the same time, it can also guide the fluid entering or discharging the first heat exchange channel 10, so that the fluid can enter or discharge quickly, thereby improving the heat exchange rate.

[0325] According to some embodiments of the present application, as shown in Figures 9 to 13, the second inlet and outlet section 17 extends along the second direction away from the first heat exchange section 11, and the fourth heat exchange portion 125 extends along the first direction (for example, the Y1 direction shown in Figure 9).

[0326] It can be understood that a certain angle is formed between the second inlet and outlet section 17 and the fourth heat exchange part 125. Thus, a certain space is formed on the side of the fourth heat exchange part 125 facing the second inlet and outlet section 17. This is beneficial to the layout of other components in the battery 1000 (such as high-voltage boxes and other structures).

[0327] In the above embodiment, by setting the second inlet and outlet section 17 to extend along the second direction away from the first heat exchange section 11, the pipeline arrangement of the first heat exchange channel 10 can be made more reasonable and convenient for connection with external pipelines; at the same time, the second inlet and outlet can be made away from the battery assembly 200, which is beneficial to reduce the possibility of damage to the battery assembly 200 due to water leakage at the second inlet and outlet.

[0328] According to some embodiments of the present application, as shown in Figures 9 to 13, the first heat exchange channel 10 further includes: a seventh bend portion 18, which is arc-shaped and bent and connected between the fourth heat exchange portion 125 and the second inlet and outlet section 17.

[0329] Among them, the seventh bend 18 is arc-shaped, that is, the seventh bend 18 has a certain angle, thus, the seventh bend 18 is bent and connected between the fourth heat exchange part 125 and the second inlet and outlet section 17, which can realize the connection between the fourth heat exchange part 125 and the second inlet and outlet section 17, so that the fluid can flow smoothly from the fourth heat exchange part 125 to the second inlet and outlet section 17 or from the second inlet and outlet section 17 to the fourth heat exchange part 125, realizing the liquid inlet or outlet of the second inlet and outlet section 17; at the same time, the arc shape can also 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 channel 10.

[0330] In the above technical solution, by setting the seventh bend 18, the fluid can flow smoothly from the fourth heat exchange part 125 to the second inlet and outlet section 17 or from the second inlet and outlet section 17 to the fourth heat exchange part 125, thereby realizing the liquid inlet or outlet of the second inlet and outlet section 17; at the same time, the arc shape of the seventh bend 18 can also 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 channel 10.

[0331] According to some embodiments of the present application, as shown in FIG. 9 to FIG. 13 , the seventh bending portion 18 is arc-shaped, and the central angle corresponding to the seventh bending portion 18 is greater than or equal to 90° and less than 180°.

[0332] For example, the central angle corresponding to the seventh bending portion 18 may be 90°, 120°, 150° or 170°.

[0333] As shown in FIG9 , the heat exchange element 100 includes two first heat exchange channels 10. The seventh bend 18 of the first heat exchange channel 10, located on the side away from the coordinate origin in the Y1 direction, is in the shape of a quarter circle. The fourth heat exchange portion 125 is arranged perpendicular to the second inlet and outlet section 17. Meanwhile, the second inlet and outlet section 17 of the first heat exchange channel 10, located on the lower side, includes a third extension section and a fourth extension section. The third extension section is connected between the fourth extension section and the fourth heat exchange portion 125. The third extension section extends along a straight line inclined relative to the second direction, and the fourth extension section extends along a straight line parallel to the second direction. The third extension section is connected to the fourth heat exchange portion 125 via the seventh bend 18. The central angle corresponding to the arc line of the seventh bend 18 is greater than 90° and less than 135°.

[0334] In the above technical solution, by setting the seventh bend 18 to be arc-shaped, the resistance to fluid flow can be further reduced, so that the fluid can flow smoothly in the seventh bend 18, effectively preventing the fluid from flowing too slowly and causing a decrease in heat exchange efficiency; at the same time, the central angle corresponding to the seventh bend 18 is greater than or equal to 90° and less than 180°, and an avoidance space can also be formed on the side of the fourth heat exchange part 125 toward the second entrance and exit section 17, which can be beneficial to the layout of other components in the battery 1000 and improve the rationality of the layout of the battery 1000.

[0335] According to some embodiments of the present application, as shown in FIG. 7 to FIG. 11 and FIG. 13 , the first heat exchange section 11 is connected to the downstream of the second heat exchange section 12 along the fluid flow direction.

[0336] That is to say, the fluid first flows through the second heat exchange section 12 and then flows into the first heat exchange section 11, wherein the second heat exchange section 12 is arranged around the circumference of the first heat exchange section 11. When the first heat exchange channel 10 exchanges heat with the battery assembly 200, the peripheral temperature of the battery assembly 200 dissipates heat faster, especially under low-temperature heating conditions, the high-temperature fluid starts to exchange heat from the second heat exchange section 12, which can enable the first heat exchange channel 10 to preferentially exchange heat with the outer circumference of the battery assembly 200, thereby helping to improve the temperature difference between the inside and outside of the battery assembly 200, and to a certain extent, improve the service life of the battery 1000.

[0337] In the above technical solution, by setting the first heat exchange section 11 to be connected to the downstream of the second heat exchange section 12 along the fluid flow direction, the first heat exchange channel 10 can preferentially exchange heat on the outer circumference of the battery 1000, which is beneficial to improving the temperature difference of the battery 1000 in different environments and increasing the service life of the battery 1000 to a certain extent.

[0338] According to some embodiments of the present application, as shown in Figures 7 to 11 and 13, the heat exchange element 100 is configured as follows: when heating the battery assembly 200 of the battery 1000, the first heat exchange section 11 is connected to the downstream of the second heat exchange section 12 along the fluid flow direction; when cooling the battery assembly 200 of the battery 1000, the first heat exchange section 11 is connected to the upstream of the second heat exchange section 12 along the fluid flow direction.

[0339] Specifically, when heating the battery assembly 200 of the battery 1000, the temperature of the fluid flowing in the heat exchange element 100 is higher than the operating temperature of the battery 1000. The heat exchange element 100 heats the battery assembly 200, and the high-temperature fluid first flows into the second heat exchange section 12 and then flows to the first heat exchange section 11. The temperature of the fluid flowing inside the second heat exchange section 12 is higher than the temperature of the fluid inside the first heat exchange section 11.

[0340] Since the high-temperature fluid first enters the second heat exchange section 12 located outside the first heat exchange channel 10, the second heat exchange section 12 can first heat the battery cells 201 outside the battery assembly 200, and then cool the battery cells 201 in the middle of the battery assembly 200 after the fluid enters the first heat exchange section 11. Since the battery cells 201 at the periphery of the battery 1000 dissipate more heat to the external environment, the temperature of the battery cells 201 at the periphery of the battery 1000 drops more. The fluid first heats the battery cells 201 at the periphery of the battery 1000. The higher temperature fluid can increase the temperature of the battery cells 201 at the periphery while compensating for the heat lost by the battery cells 201 due to heat dissipation to the external environment, thereby meeting their heating needs. The battery cells 201 at the middle position of the battery assembly 200 have less contact area with the external environment and less heat loss. The lower temperature fluid flowing in the first heat exchange section 11 can cooperate with the heat generated by the battery cells 201 themselves to well meet their heating needs. As a result, the heating effects obtained by the battery cells 201 at the periphery of the battery assembly 200 and the battery cells 201 at the middle position of the battery assembly 200 are basically the same, thereby making the temperatures of the battery cells 201 at the periphery of the battery assembly 200 and the battery cells 201 at the middle position of the battery assembly 200 more consistent after heating, making the temperature distribution inside the battery 1000 more uniform.

[0341] When cooling the battery assembly 200 of the battery 1000, the temperature of the fluid flowing in the heat exchange element 100 is lower than the operating temperature of the battery 1000. The heat exchange element 100 is used to cool the battery 1000. The fluid flows from the first heat exchange section 11 to the second heat exchange section 12. The temperature of the fluid flowing in the first heat exchange section 11 is lower than the temperature of the fluid inside the second heat exchange section 12.

[0342] When the battery 1000 is cooled, the fluid flows from the first heat exchange section 11 to the second heat exchange section 12 , that is, the fluid flows from the middle portion of the battery assembly 200 to the edge portion of the battery assembly 200 and exchanges heat. Among them, since the heat dissipation of the battery cells 201 at the periphery of the battery 1000 is better than that of the internal battery cells 201, the lower temperature fluid of the first heat exchange section 11 can better meet the heat dissipation requirements of the battery cells 201 at the middle of the battery 1000. At the same time, since the battery cells 201 at the periphery of the battery assembly 200 can directly dissipate heat naturally toward the external environment, even if the temperature of the fluid in the second heat exchange section 12 is slightly higher, it can still meet the heat dissipation requirements of the peripheral battery cells 201, so that the cooling effects obtained by the battery cells 201 at the periphery of the battery 1000 and the battery cells 201 at the middle of the battery 1000 are roughly the same, and the temperatures of the battery cells 201 at the periphery of the battery 1000 and the battery cells 201 at the middle of the battery 1000 after cooling and heat dissipation are relatively consistent, reducing the temperature difference between the inside and outside of the battery assembly 200, and making the temperature distribution inside the battery 1000 more uniform.

[0343] In the above technical solution, the heat exchange element 100 is configured as follows: when heating the battery assembly 200 of the battery 1000, the first heat exchange section 11 is connected to the downstream of the second heat exchange section 12 along the fluid flow direction; when cooling the battery assembly 200 of the battery 1000, the first heat exchange section 11 is connected to the upstream of the second heat exchange section 12 along the fluid flow direction, which can further enhance the heat exchange effect on the battery 1000 and improve the temperature uniformity of the battery assembly 200.

[0344] According to some embodiments of the present application, as shown in Figures 7 to 13, the heat exchange element 100 has one or more heat exchange channels. When the number of heat exchange channels is multiple, the multiple heat exchange channels are arranged at intervals along the first direction, or arranged around each other, at least one heat exchange channel is formed as a first heat exchange channel 10, and multiple heat exchange channels are arranged in parallel.

[0345] It is understandable that the number of heat exchange channels of the heat exchange element 100 may be one, two, three, four, or more. When there are multiple heat exchange channels, one of the multiple heat exchange channels may be formed as the first heat exchange channel 10, or two, three, four, or more heat exchange channels may be formed as the first heat exchange channel 10, or all of the multiple heat exchange channels may be formed as the first heat exchange channel 10.

[0346] In some specific embodiments, a plurality of heat exchange channels are arranged at intervals along the first direction. For example, as shown in FIG9 , a heat exchange element 100 may include two heat exchange channels, and two first heat exchange channels 10 are arranged at intervals along the first direction. Furthermore, both heat exchange channels may be formed as first heat exchange channels 10. For another example, the heat exchange element 100 may include three heat exchange channels, and the three heat exchange channels are arranged in sequence along the first direction. Furthermore, two of the three heat exchange channels are first heat exchange channels 10, and one is a second heat exchange channel 30, and the second heat exchange channel 30 is arranged between the two first heat exchange channels 10.

[0347] In other embodiments, multiple heat exchange channels are arranged to wind around each other. For example, as shown in FIG8 , a heat exchange element 100 has two heat exchange channels arranged in parallel, the two heat exchange channels wind around each other, and further, both heat exchange channels can be formed into first heat exchange channels 10. As shown in FIG7 , a heat exchange element 100 has three heat exchange channels arranged in parallel, the three heat exchange channels wind around each other, and all three heat exchange channels can be formed into first heat exchange channels.

[0348] The multiple heat exchange channels are arranged in parallel, that is, the inlets of the multiple heat exchange channels are connected to the same liquid supply pipe, and the outlets of the multiple heat exchange channels are connected to the same liquid outlet pipe.

[0349] In the above-mentioned embodiment, by arranging the heat exchange element 100 with one or more heat exchange channels, and the multiple heat exchange channels are arranged at intervals along the first direction or arranged around each other, the diversity of the heat exchange channels can be increased, thereby improving the adaptability of the heat exchange element 100, so that it can meet the different needs of the battery 1000, thereby improving the market competitiveness of the battery 1000; at the same time, the multiple heat exchange channels are arranged in parallel, so that the multiple heat exchange channels can exchange heat at the same time, thereby reducing the heat exchange time of the heat exchange element 100 and improving the heat exchange efficiency.

[0350] According to some embodiments of the present application, as shown in Figures 9, 11, and 13, a plurality of heat exchange channels are arranged at intervals along the first direction, and the two heat exchange channels located at both ends of the first direction are both first heat exchange channels 10; and the two first heat exchange channels 10 are symmetrically arranged about the center line of the heat exchange element 100 along the second direction, wherein the second direction is set at an angle to the first direction.

[0351] It can be understood that arranging the second heat exchange section 12 of the first heat exchange channel 10 on the periphery of the battery assembly 200 can improve the uniformity of the temperature inside and outside the battery assembly 200. Therefore, forming the two heat exchange channels located at both ends of the first direction into the first heat exchange channel 10 can make the battery cells 201 at both ends of the battery assembly 200 in the first direction have better temperature uniformity performance, thereby achieving overall temperature uniformity of the battery assembly 200.

[0352] Furthermore, the fluid flow directions and the inlets and outlets at both ends of the two first heat exchange channels 10 are arranged symmetrically, so that the two first heat exchange channels 10 can synchronously exchange heat at both ends of the battery assembly 200 in the first direction, resulting in a better temperature equalization effect.

[0353] “The second direction is arranged at an angle to the first direction” is intended to explain that the first direction and the second direction can be arranged vertically or in a non-vertical arrangement that only intersects. For example, the first direction and the second direction can be arranged at an angle of 30°, 60° or 80°.

[0354] In the above technical solution, by setting two symmetrically arranged first heat exchange channels 10, liquid can be fed into both sides at the same time, the liquid inlet flow rate is increased, the length of a single heat exchange channel is shortened, and the pressure drop in a single heat exchange channel is reduced, thereby improving the heat exchange efficiency.

[0355] According to some embodiments of the present application, as shown in FIG. 9 , FIG. 11 , and FIG. 13 , a plurality of heat exchange channels are symmetrically arranged about a center line of the heat exchange element 100 along the second direction.

[0356] Among them, the flow directions of multiple heat exchange channels and the inlets and outlets at both ends are also arranged symmetrically, so that the heat exchange element 100 can be divided into two symmetrically distributed parts. In this way, during the heat exchange process, the fluid distribution of the two symmetrical parts of the heat exchange element 100 is consistent, thereby improving the temperature consistency of the heat exchange areas of the battery assembly 200 corresponding to the two parts of the heat exchange element 100, thereby further improving the temperature uniformity of the battery assembly 200.

[0357] In the above technical solution, by setting up multiple heat exchange channels symmetrically arranged about the center line of the heat exchange element 100 along the second direction, the multiple heat exchange channels can synchronously exchange heat with the battery assembly 200 to improve the heat exchange efficiency. At the same time, it can also improve the temperature consistency of the two symmetrically arranged heat exchange areas of the battery assembly 200 and the heat exchange element 100, thereby further improving the temperature uniformity effect of the battery assembly 200.

[0358] In some specific embodiments of the present application, multiple heat exchange channels are asymmetrically arranged about the center line of the heat exchange element 100 along the second direction. In this way, multiple heat exchange channels can be designed according to the actual situation of the battery assembly 200, so that the heat exchange element 100 can meet the heat exchange requirements of the battery assembly 200, and further ensure the heat exchange effect of the battery assembly 200.

[0359] According to some embodiments of the present application, as shown in Figure 13, the multiple heat exchange channels also include: at least one second heat exchange channel 30, the second heat exchange channel 30 is arranged between the two first heat exchange channels 10, wherein the structure of any second heat exchange channel 30 is the same as or different from the structure of the first heat exchange channel 10.

[0360] Specifically, the second heat exchange channel 30 is arranged between the two first heat exchange channels 10, and is mainly used for heat exchange with the middle position of the battery assembly 200, wherein the temperature of the battery cell 201 arranged in the middle position is relatively balanced. Therefore, the structure of any second heat exchange channel 30 can be the same as or different from the structure of the first heat exchange channel 10. For example, the structure of the second heat exchange channel 30 can be a simple U-shaped structure. Furthermore, the structure of the second heat exchange channel 30 can be designed according to the actual heat exchange conditions of the battery 1000.

[0361] In addition, the number of second heat exchange channels 30 can be one or more. For example, the number of second heat exchange channels 30 can be one, two, three or more. The number of second heat exchange channels 30 can be selected according to the arrangement of the battery components 200.

[0362] In the above embodiment, by providing at least one second heat exchange channel 30 , the diversity of the heat exchange channel arrangement can be increased, so that the heat exchange element 100 can better exchange heat with the battery assembly 200, thereby improving the heat exchange effect of the heat exchange element 100.

[0363] According to some embodiments of the present application, as shown in Figure 13, the second heat exchange channel 30 includes a plurality of fourth heat exchange sections 31, and the plurality of fourth heat exchange sections 31 are connected sequentially along the fluid flow direction, wherein the fourth heat exchange sections 31 extend along the second direction, and the plurality of fourth heat exchange sections 31 are arranged at intervals in the first direction.

[0364] Specifically, a plurality of fourth heat exchange sections 31 connected in sequence may form a U-shaped heat exchange channel or an S-shaped heat exchange channel.

[0365] For example, the number of the fourth heat exchange sections 31 may be two, three or more, and the number of the fourth heat exchange sections 31 may be designed according to the size of the battery assembly 200 .

[0366] In the above technical solution, by setting the second heat exchange channel 30 to include multiple fourth heat exchange sections 31 connected in sequence, the structural complexity of the second heat exchange channel 30 can be reduced, and then the production cost of the second heat exchange channel 30 can be reduced, thereby reducing the production cost of the heat exchange component 100.

[0367] According to some embodiments of the present application, as shown in Figure 8, the heat exchange element 100 has multiple heat exchange channels, and the multiple heat exchange channels include a first heat exchange channel 10 and at least one third heat exchange channel 40, the third heat exchange channel 40 is bent in the U-shaped area 120 of the first heat exchange channel 10, and the first heat exchange channel 10 and the third heat exchange channel 40 are bent in the same plane, and the bending structures of the first heat exchange channel 10 and the third heat exchange channel 40 are the same or different.

[0368] It is understandable that the bending structures of the first heat exchange channel 10 and the third heat exchange channel 40 can be the same or different. The number of the third heat exchange channel 40 can be one or more, for example, the number of the third heat exchange channel 40 can be one, two, three or more.

[0369] For example, as shown in Figure 8, the multiple heat exchange channels include a first heat exchange channel 10 and a third heat exchange channel 40. The third heat exchange channel 40 has the same structure as the first heat exchange channel 10, and the third heat exchange channel 40 is bent and arranged in the U-shaped area 120 of the first heat exchange channel 10.

[0370] Specifically, the first heat exchange channel 10 and the third heat exchange channel 40 each include a first heat exchange portion 111, a second heat exchange portion 121, a third heat exchange portion 122, and a fourth heat exchange portion 125. The multiple first heat exchange portions 111, third heat exchange portions 122, and fourth heat exchange portions 125 of the first heat exchange channel 10 and the third heat exchange channel 40 extend along the X1 direction, and the second heat exchange portion 121 extends along the Y1 direction. The fourth heat exchange portion 125, the second heat exchange portion 121, and the third heat exchange portion 122 are sequentially bent and connected to form a U-shaped region 120 with an opening facing away from the coordinate origin in the X1 direction. The first heat exchange portion 111 includes multiple first heat exchange portions 111, which are arranged within the U-shaped region 120 and spaced apart along the Y1 direction and sequentially bent and connected.

[0371] The third heat exchange section 122 of the first heat exchange channel 10 is arranged on the side of the multiple first heat exchange sections 111 that is farthest from the coordinate origin in the Y1 direction, and the fourth heat exchange section 125 is arranged on the side of the multiple first heat exchange sections 111 that is close to the coordinate origin in the Y1 direction. The third heat exchange channel 40 is connected to the first heat exchange section 111 that is farthest from the coordinate origin in the Y1 direction. The third heat exchange section 122 of the third heat exchange channel 40 is arranged on the side of the multiple first heat exchange sections 111 that is close to the coordinate origin in the Y1 direction, and the fourth heat exchange section 125 is arranged on the side of the multiple first heat exchange sections 111 that is farthest from the coordinate origin in the Y1 direction. The third heat exchange section 122 of the third heat exchange channel 40 is connected to the first heat exchange section 111 that is closest to the coordinate origin in the Y1 direction. The third heat exchange channel 40 is arranged between the fourth heat exchange section 125 of the first heat exchange channel 10 and the multiple first heat exchange sections 111.

[0372] In addition, the first heat exchange channel 10 and the third heat exchange channel 40 also include a first inlet and outlet section 15 and a second inlet and outlet section 17, wherein the first inlet and outlet section 15 of the first heat exchange channel 10 is connected to the fourth heat exchange part 125, and the second inlet and outlet section 17 is connected to the first heat exchange part 111 closest to the coordinate origin in the Y1 direction; the first inlet and outlet section 15 of the third heat exchange channel 40 is connected to the first heat exchange part 111 farthest from the coordinate origin in the Y1 direction, and the second inlet and outlet section 17 is connected to the fourth heat exchange part 125.

[0373] In the above technical solution, by setting up multiple heat exchange channels, the diversity of the heat exchange channels can be increased, so that the arrangement of the heat exchange channels can be designed according to the cooling requirements of the battery 1000, thereby further increasing the heat exchange effect of the heat exchange component 100 and improving the temperature uniformity of the battery 1000.

[0374] According to some embodiments of the present application, as shown in Figure 7, the third heat exchange channel 40 includes a U-shaped area 120 with the same structure as the first heat exchange channel 10, and at least part of the first heat exchange section 11 of the first heat exchange channel 10 is arranged in the U-shaped area 120 of the third heat exchange channel 40.

[0375] It is understandable that only part of the first heat exchange section 11 of the first heat exchange channel 10 may be arranged in the U-shaped area 120 of the third heat exchange channel 40 , or the entire first heat exchange section 11 may be arranged in the U-shaped area 120 of the third heat exchange channel 40 .

[0376] For example, as shown in FIG. 7 , the plurality of heat exchange channels include a first heat exchange channel 10 and two third heat exchange channels 40 . The two third heat exchange channels 40 have the same structure as the first heat exchange channel 10 .

[0377] Specifically, the first heat exchange channel 10 and the two third heat exchange channels 40 each include a first heat exchange portion 111, a second heat exchange portion 121, a third heat exchange portion 122, and a fourth heat exchange portion 125. The fourth heat exchange portion 125, the second heat exchange portion 121, and the third heat exchange portion 122 of the first heat exchange channel 10 and any of the two third heat exchange channels 40 are sequentially bent and connected to form a U-shaped region 120 with an opening facing a side away from the coordinate origin in the X1 direction. The first heat exchange portion 111 includes a plurality of first heat exchange portions 111, which are arranged within the U-shaped region 120. The plurality of first heat exchange portions 111 extend linearly along the X1 direction and are spaced apart and sequentially bent and connected along the Y1 direction. The second heat exchange portion 121 extends along the Y1 direction, and the third heat exchange portion 122 and the fourth heat exchange portion 125 both extend along the X1 direction.

[0378] Among them, the third heat exchange part 122 of the first heat exchange channel 10 is located on the side of the multiple first heat exchange parts 111 away from the coordinate origin in the Y1 direction, and is connected to the first heat exchange part 111 farthest from the coordinate origin in the Y1 direction, and the fourth heat exchange part 125 is located on the side of the multiple first heat exchange parts 111 close to the coordinate origin in the Y1 direction.

[0379] The third heat exchange portion 122 of a third heat exchange channel 40 is located on a side of the plurality of first heat exchange portions 111 that is farthest from the coordinate origin in the Y1 direction, and is connected to the first heat exchange portion 111 that is farthest from the coordinate origin in the Y1 direction. The third heat exchange portion 122 of the third heat exchange channel 40 and the first heat exchange portion 111 of the third heat exchange channel 40 that is farthest from the coordinate origin in the Y1 direction are located between the third heat exchange portion 122 of the first heat exchange channel 10 and the plurality of first heat exchange portions 111 of the first heat exchange channel 10. The plurality of first heat exchange portions 111 of the first heat exchange channel 10 are located between the first heat exchange portion 111 of the third heat exchange channel 40 that is farthest from the coordinate origin in the Y1 direction and the second first heat exchange portion 111 of the third heat exchange channel 40 that is farthest from the coordinate origin in the Y1 direction.

[0380] Another third heat exchange channel 40 is located between the fourth heat exchange part 125 of the adjacent third heat exchange channel 40 and multiple first heat exchange parts 111 of the adjacent third heat exchange channel 40, and the fourth heat exchange part 125 of the third heat exchange channel 40 is located on the side of the multiple first heat exchange parts 111 of the third heat exchange channel 40 away from the coordinate origin in the Y1 direction, and the third heat exchange part 122 of the third heat exchange channel 40 is connected to the first heat exchange part 111 of the third heat exchange channel 40 that is closest to the coordinate origin in the Y1 direction.

[0381] In addition, the first heat exchange channel 10 and the two third heat exchange channels 40 also include a first inlet and outlet section 15 and a second inlet and outlet section 17 , wherein the first inlet and outlet section 15 and the second inlet and outlet section 17 are respectively connected to the fourth heat exchange part 125 and the first heat exchange part 111 .

[0382] In the above technical solution, by setting the third heat exchange channel 40 to include a U-shaped area 120 with the same structure as the first heat exchange channel 10, at least part of the first heat exchange section 11 of the first heat exchange channel 10 is arranged in the U-shaped area 120 of the third heat exchange channel 40, so that at least part of the first heat exchange channel 10 and the third heat exchange channel 40 can be arranged around each other. In this way, the winding method of the heat exchange channel can be arranged according to the heat exchange requirements of various parts of the battery assembly 200, further increasing the heat exchange effect of the heat exchange component 100 and improving the temperature uniformity of the battery 1000.

[0383] According to some embodiments of the present application, as shown in FIG. 7-FIG . 8 , the U-shaped region 120 of the second heat exchange section 12 of the first heat exchange channel 10 is located at the outermost circumference of the heat exchange element 100 .

[0384] That is to say, the U-shaped area 120 of the second heat exchange section 12 of the first heat exchange channel 10 is formed as the outermost heat exchange channel of the heat exchange element 100. In this way, the U-shaped area 120 of the first heat exchange channel 10 can be used to exchange heat with the outer periphery of the battery assembly 200, thereby improving the heat exchange effect on the periphery of the battery assembly 200.

[0385] In the above technical solution, by setting the U-shaped area 120 of the second heat exchange section 12 of the first heat exchange channel 10 at the outermost circumference of the heat exchange component 100, the second heat exchange section 12 can exchange heat on the outer circumference of the battery 1000, which is beneficial to improving the temperature difference of the battery 1000 in different environments and increasing the service life of the battery 1000 to a certain extent.

[0386] The temperature regulating component 500 according to an embodiment of the present application is described below with reference to Figures 14-15. Figure 14 is a partial cross-sectional view of a battery 1000 according to another embodiment of the present application, and Figure 15 is a partial schematic view of a battery 1000 according to another embodiment of the present application.

[0387] According to some embodiments of the present application, as shown in Figures 14-15, the thermal management system of the battery 1000 includes a thermostat 500, and the thermostat 500 includes at least one of a first thermostat 501 and a second thermostat 502. The first thermostat 501 is arranged outside the box body 301 and is in contact with the outer wall of the box body 300; the second thermostat 502 is arranged inside the box body 300 and is located between either side of the outer peripheral surface of the battery cell 201 and the box body 300; at least one of the first thermostat 501 and the second thermostat 502 forms a heat exchange component 100.

[0388] Specifically, the thermostat 500 is used to adjust the operating temperature of the battery 1000 so that it remains within a safe operating range. The phrase "the thermostat 500 includes at least one of a first thermostat 501 and a second thermostat 502" should be understood to mean that the thermostat may include only the first thermostat 501, only the second thermostat 502, or both.

[0389] “At least one of the first temperature regulating component 501 and the second temperature regulating component 502 forms the heat exchange component 100” can be understood as follows: only the first temperature regulating component 501 can be formed as the heat exchange component 100, only the second temperature regulating component 502 can be formed as the heat exchange component 100, or both can be formed as the heat exchange component 100.

[0390] "The second temperature regulating component 502 is arranged in the box body 300, and is located between the box body 300 and any side of the outer peripheral surface of the battery cell 201." It can be understood that the second temperature regulating component 502 can be arranged between the battery cell 201 and the bottom wall of the box body 301, or between the battery cell 201 and the cover plate 303 of the box body 300, or between the battery cell 201 and the surrounding wall of the box body 300.

[0391] When the temperature regulating component 500 only includes the first temperature regulating component 501, the first temperature regulating component 501 is formed as a heat exchange component 100. The temperature regulating component 500 is arranged outside the box body 301 and is in contact with the outer wall of the bottom wall of the box body 301. The bottom of the box body 301 can be equivalent to a temperature equalizing plate for evenly transmitting the temperature of the heat exchange component 100 to the battery assembly 200 and exchanging heat with the battery assembly 200. At this time, the bottom of the box body 301 can also play an insulating role, so that when the heat exchange component 100 leaks, it will not affect the internal battery cells 201.

[0392] When the temperature regulating component 500 only includes the second temperature regulating component 502, the second temperature regulating component 502 is formed as a heat exchange component 100. The temperature regulating component 500 is arranged in the battery 1000 box 300 and is located between either side of the outer peripheral surface of the battery cell 201 and the box 300. At this time, the heat exchange component 100 can directly exchange heat with the battery cell 201, thereby improving the heat transfer effect of the heat exchange component 100.

[0393] When the temperature regulating component 500 includes a first temperature regulating component 501 and a second temperature regulating component 502, the first temperature regulating component 501 is arranged outside the box body 301 and is in contact with the outer wall of the bottom wall of the box body 301. The second temperature regulating component 502 is arranged inside the box body 300 and is located between the box body 300 and either side of the outer peripheral surface of the battery cell 201. At the same time, one of the first temperature regulating component 501 and the second temperature regulating component 502 can be formed as a heat exchange component 100, or both can be formed as heat exchange components 100.

[0394] In the above technical solution, by setting at least one of the first temperature regulating component 501 and the second temperature regulating component 502 to form a heat exchange component 100, the thermal management system of the battery 1000 can better manage the thermal state of the battery 1000, so that during the operation of the battery 1000, the battery assembly 200 can operate in a good temperature environment, thereby making the operation of the battery 1000 more stable and the performance of the battery 1000 better.

[0395] According to some embodiments of the present application, as shown in Figure 15, the thermal management system of the battery 1000 also includes a third temperature control component 503. The third temperature control component 503 is arranged in the box body 301 and is located between two adjacent battery cells 201. The structure of the third temperature control component 503 is the same as or different from the structure of the heat exchange component 100.

[0396] Specifically, in some embodiments, the structure of the third temperature regulating element 503 is the same as that of the heat exchange element 100; in other embodiments, the structure of the third temperature regulating element 503 is different from that of the heat exchange element 100. For example, the third temperature regulating element 503 can be formed as a harmonica tube plate, or as a U-shaped tube, etc.

[0397] Furthermore, the number of the third temperature regulating components 503 includes multiple third temperature regulating components 503 , and the multiple third temperature regulating components 503 are respectively disposed between two adjacent battery cells 201 .

[0398] In the above technical solution, by arranging a third temperature regulating component 503 between two adjacent battery cells 201, the third temperature regulating component 503 can be in contact with a large surface of the battery cell 201, thereby increasing the contact area between the third temperature regulating component 503 and the battery cell 201, thereby improving the heat exchange effect of the third temperature regulating component 503 and improving the heat exchange efficiency of the entire battery 1000.

[0399] In a second aspect, an embodiment of the present application further provides an electrical device, including: the battery 1000 of the embodiment provided in the first aspect of the present application.

[0400] In the above technical solution, since the performance of the battery 1000 is improved, it is beneficial to improve the working power performance of the electrical device.

[0401] A battery 1000 and an electrical device having the same according to a specific embodiment of the present invention will be described below with reference to FIG. 3 to FIG. 13 .

[0402] 3-13 , the battery 1000 includes a heat exchange element 100 , a battery assembly 200 and a box 300 . The box 300 includes a box body 301 . The heat exchange element 100 and the battery assembly 200 are located in the box body 301 . The battery assembly 200 includes a battery cell 201 .

[0403] The box body 301 has a housing cavity 3011, within which the battery cells 201 are located. The box body 301 is used to support and protect the battery cells 201. A recess 3014 is formed in the wall of the box body 301. The recess 3014 is stamped into the wall of the box body 301, and the heat exchange element 100 is embedded in the recess 3014, with the upper surface of the heat exchange element 100 along the thickness direction flush with the notch of the recess 3014. The heat exchange element 100 is used to exchange heat with the battery cells 201 to regulate their temperature.

[0404] The box body 301 includes a box body 3012 and a cover plate 303. The box body 3012 is a semi-enclosed structure with an open end. The cover plate 303 is connected to the box body 3012 to seal the open end. The box body 3012 is surrounded by multiple box walls. The box body 3012 includes a bottom plate 302 and multiple side plates 304 arranged around the bottom plate 302 and connected end to end. The box walls can be either the bottom plate 302 or the side plates 304. The box body 3012 is a one-piece stamped and formed part, or the multiple side plates 304 are each a profile frame. The bottom plate 302 is a one-piece stamped and formed part. The side plates 304 and the bottom plate 302 are made of the same material. The side plates 304 and the bottom plate 302 are separately formed and welded together.

[0405] A groove 3014 is formed on at least one of the multiple box walls, that is, a groove 3014 is formed on the bottom plate 302 or at least one of the multiple side plates 304. Specifically, a groove 3014 is formed on the inner side of the bottom plate 302 close to the accommodating cavity 3011 or on the outer side away from the accommodating cavity 3011, and when the groove 3014 is located on the inner side, the groove 3014 is connected to the accommodating cavity 3011; a groove 3014 is formed on the inner side of the cover plate 303 close to the accommodating cavity 3011 or on the outer side away from the accommodating cavity 3011, and when the groove 3014 is located on the inner side, the groove 3014 is connected to the accommodating cavity 3011.

[0406] The heat exchange element 100 is embedded in the groove 3014. Specifically, the heat exchange element 100 can be embedded in the cover plate 303 and the bottom plate 302. Thermal conductive adhesive can be applied to the side of the heat exchange element 100 near the battery cell 201 to increase the heat exchange efficiency of the heat exchange element 100. The heat exchange element 100 includes one or more heat exchange tubes, and a fluid flows through the heat exchange tubes. When the temperature of the battery 1000 is low, the temperature of the fluid is higher than that of the battery 1000. The heat of the fluid can be transferred to the battery 1000, which can be used to increase the temperature of the battery 1000, so that the operating temperature of the battery 1000 is within a suitable range, thereby increasing the operating time of the battery 1000. When the temperature of the battery 1000 is too high, the temperature of the fluid is lower than that of the battery 1000. The heat of the battery 1000 can be transferred to the fluid to reduce the temperature of the battery 1000, so that the operating temperature of the battery 1000 is within a suitable range, thereby increasing the operating time of the battery 1000.

[0407] The box body 300 also includes a beam body 306, which is arranged in the box body 301. The beam body 306 is an expansion beam or a non-metallic beam body. Part of the beam body 306 protrudes toward the inside of the hollow beam to form a first recess 3061. A channel 305 allowing the heat exchange tube to pass through is constructed between the beam body 306 and the box body 301, that is, the first recess 3061 is constructed as the channel 305.

[0408] The following will describe four specific implementable examples of the heat exchange element 100 of the present application with reference to FIG. 5 to FIG. 13 .

[0409] Example 1,

[0410] Specifically, as shown in FIG9 , the heat exchange element 100 includes two heat exchange tubes, each of which defines a first heat exchange channel 10. The two first heat exchange channels 10 are spaced apart along the Y1 direction and arranged symmetrically along the X1 direction of the battery assembly 200. Each first heat exchange channel 10 includes three first heat exchange sections 111, one second heat exchange section 121, one third heat exchange section 122, one fourth heat exchange section 125, and one third heat exchange segment 13. The fourth heat exchange section 125, the second heat exchange section 121, and the third heat exchange section 122 are sequentially connected to form a U-shaped region 120, and the three first heat exchange sections 111 are bent and arranged within the U-shaped region 120.

[0411] Specifically, the second heat exchange portion 121 and the first heat exchange portion 111 both extend in a straight line along the X1 direction and are arranged at intervals along the Y1 direction. The second heat exchange portion 121 is arranged on the side of the first heat exchange portion 111 close to the edge of the battery 1000 in the Y1 direction; the third heat exchange portion 122, the fourth heat exchange portion 125 and the third heat exchange section 13 all extend in a straight line along the Y1 direction. The third heat exchange portion 122 is arranged on the side of the three first heat exchange portions 111 close to the coordinate origin in the X1 direction, and is connected to one end of the second heat exchange portion 121 close to the coordinate origin in the X1 direction and to the side close to the second heat exchange portion 121 close to the coordinate origin in the X1 direction. The fourth heat exchange section 125 is arranged on the side of the three first heat exchange sections 111 away from the coordinate origin in the X1 direction and is connected to the end of the second heat exchange section 121 away from the coordinate origin in the X1 direction. The third heat exchange section 13 is arranged on the side of the multiple first heat exchange sections 111 away from the coordinate origin in the X1 direction and one end of the third heat exchange section 13 is connected to the end of the first heat exchange section 111 closest to the second heat exchange section 121 away from the coordinate origin in the X1 direction.

[0412] When the battery assembly 200 is heated and kept warm, the flow direction of the first heat exchange channel 10 is sequentially through the fourth heat exchange section 125, the second heat exchange section 121, the third heat exchange section 122, and the first heat exchange section 111. When the battery assembly 200 is cooled, the flow direction of the first heat exchange channel 10 is sequentially through the third heat exchange section 13, the first heat exchange section 111, the third heat exchange section 122, the second heat exchange section 121, and the fourth heat exchange section 125.

[0413] Furthermore, the heat exchange tube is formed by bending a single heat exchange tube, wherein the connections between the fourth heat exchange part 125 and the second heat exchange part 121, the second heat exchange part 121 and the third heat exchange part 122, the third heat exchange part 122 and the first heat exchange part 111, and the first heat exchange part 111 and the third heat exchange section 13 are all 90° arc bends, and the connection positions of multiple first heat exchange parts 111 are all 180° arc bends.

[0414] In addition, the two ends of the heat exchange tube are respectively formed as a first tube portion and a second tube portion, and the first tube portion and the second tube portion serve as the water inlet section and the water outlet section of the heat exchange channel, respectively, wherein one end of the first tube portion is connected to the first channel interface 22 of the collector 20 to form the first inlet and outlet of the heat exchange channel, and the other end is connected to the fourth heat exchange portion 125 in a bent manner; one end of the second tube portion is connected to the second channel interface 23 of the collector 20 to form the second inlet and outlet of the heat exchange channel, and the other end is connected to the third heat exchange section 13 in a bent manner.

[0415] Example 2,

[0416] 7 , the structure of this embodiment is substantially the same as that of the first embodiment, wherein the same components are designated by the same reference numerals, and the only difference is that the heat exchange element 100 described in the first embodiment includes only two first heat exchange channels 10 , while the heat exchange element 100 in the second embodiment includes one first heat exchange channel 10 and two third heat exchange channels 40 .

[0417] Specifically, the two third heat exchange channels 40 have the same structure as the first heat exchange channel 10. The first heat exchange channel 10 and the two third heat exchange channels 40 each include a first heat exchange portion 111, a second heat exchange portion 121, a third heat exchange portion 122, and a fourth heat exchange portion 125. The fourth heat exchange portion 125, the second heat exchange portion 121, and the third heat exchange portion 122 of the first heat exchange channel 10 and any of the two third heat exchange channels 40 are sequentially bent and connected to form a U-shaped region 120 with an opening facing a side away from the coordinate origin in the X1 direction. The first heat exchange portion 111 includes a plurality of first heat exchange portions 111, which are arranged within the U-shaped region 120. The plurality of first heat exchange portions 111 extend linearly along the X1 direction and are spaced apart and sequentially bent and connected along the Y1 direction. The second heat exchange portion 121 extends along the Y1 direction, and the third heat exchange portion 122 and the fourth heat exchange portion 125 both extend along the X1 direction.

[0418] Among them, the third heat exchange part 122 of the first heat exchange channel 10 is located on the side of the multiple first heat exchange parts 111 away from the coordinate origin in the Y1 direction, and is connected to the first heat exchange part 111 farthest from the coordinate origin in the Y1 direction, and the fourth heat exchange part 125 is located on the side of the multiple first heat exchange parts 111 close to the coordinate origin in the Y1 direction.

[0419] The third heat exchange portion 122 of a third heat exchange channel 40 is located on a side of the plurality of first heat exchange portions 111 that is farthest from the coordinate origin in the Y1 direction, and is connected to the first heat exchange portion 111 that is farthest from the coordinate origin in the Y1 direction. The third heat exchange portion 122 of the third heat exchange channel 40 and the first heat exchange portion 111 of the third heat exchange channel 40 that is farthest from the coordinate origin in the Y1 direction are located between the third heat exchange portion 122 of the first heat exchange channel 10 and the plurality of first heat exchange portions 111 of the first heat exchange channel 10. The plurality of first heat exchange portions 111 of the first heat exchange channel 10 are located between the first heat exchange portion 111 of the third heat exchange channel 40 that is farthest from the coordinate origin in the Y1 direction and the second first heat exchange portion 111 of the third heat exchange channel 40 that is farthest from the coordinate origin in the Y1 direction.

[0420] Another third heat exchange channel 40 is located between the fourth heat exchange part 125 of the adjacent third heat exchange channel 40 and multiple first heat exchange parts 111 of the adjacent third heat exchange channel 40, and the fourth heat exchange part 125 of the third heat exchange channel 40 is located on the side of the multiple first heat exchange parts 111 of the third heat exchange channel 40 away from the coordinate origin in the Y1 direction, and the third heat exchange part 122 of the third heat exchange channel 40 is connected to the first heat exchange part 111 of the third heat exchange channel 40 that is closest to the coordinate origin in the Y1 direction.

[0421] In addition, the first heat exchange channel 10 and the two third heat exchange channels 40 also include a first inlet and outlet section 15 and a second inlet and outlet section 17 , wherein the first inlet and outlet section 15 and the second inlet and outlet section 17 are respectively connected to the fourth heat exchange part 125 and the first heat exchange part 111 .

[0422] Example 3,

[0423] 8 , the structure of this embodiment is substantially the same as that of the first embodiment, wherein the same components are designated by the same reference numerals, and the only difference is that the heat exchange element 100 described in the first embodiment includes only two first heat exchange channels 10 , while the heat exchange element 100 in the third embodiment includes one first heat exchange channel 10 and one third heat exchange channel 40 .

[0424] Specifically, the first heat exchange channel 10 and the third heat exchange channel 40 each include a first heat exchange portion 111, a second heat exchange portion 121, a third heat exchange portion 122, and a fourth heat exchange portion 125. The multiple first heat exchange portions 111, third heat exchange portions 122, and fourth heat exchange portions 125 of the first heat exchange channel 10 and the third heat exchange channel 40 extend along the X1 direction, and the second heat exchange portion 121 extends along the Y1 direction. The fourth heat exchange portion 125, the second heat exchange portion 121, and the third heat exchange portion 122 are sequentially bent and connected to form a U-shaped region 120 with an opening facing away from the coordinate origin in the X1 direction. The first heat exchange portion 111 includes multiple first heat exchange portions 111, which are arranged within the U-shaped region 120 and spaced apart along the X1 direction and sequentially bent and connected.

[0425] The third heat exchange section 122 of the first heat exchange channel 10 is arranged on the side of the multiple first heat exchange sections 111 that is farthest from the coordinate origin in the Y1 direction, and the fourth heat exchange section 125 is arranged on the side of the multiple first heat exchange sections 111 that is close to the coordinate origin in the Y1 direction. The third heat exchange channel 40 is connected to the first heat exchange section 111 that is farthest from the coordinate origin in the Y1 direction. The third heat exchange section 122 of the third heat exchange channel 40 is arranged on the side of the multiple first heat exchange sections 111 that is close to the coordinate origin in the Y1 direction, and the fourth heat exchange section 125 is arranged on the side of the multiple first heat exchange sections 111 that is farthest from the coordinate origin in the Y1 direction. The third heat exchange section 122 of the third heat exchange channel 40 is connected to the first heat exchange section 111 that is closest to the coordinate origin in the Y1 direction. The third heat exchange channel 40 is arranged between the fourth heat exchange section 125 of the first heat exchange channel 10 and the multiple first heat exchange sections 111.

[0426] In addition, the first heat exchange channel 10 and the third heat exchange channel 40 also include a first inlet and outlet section 15 and a second inlet and outlet section 17, wherein the first inlet and outlet section 15 of the first heat exchange channel 10 is connected to the fourth heat exchange part 125, and the second inlet and outlet section 17 is connected to the first heat exchange part 111 closest to the coordinate origin in the Y1 direction; the first inlet and outlet section 15 of the third heat exchange channel 40 is connected to the first heat exchange part 111 farthest from the coordinate origin in the Y1 direction, and the second inlet and outlet section 17 is connected to the fourth heat exchange part 125.

[0427] Example 4,

[0428] 13 , the structure of this embodiment is substantially the same as that of the first embodiment, wherein the same components are designated by the same reference numerals, and the only difference is that the heat exchange element 100 described in the first embodiment includes only two first heat exchange channels 10 , while the heat exchange element 100 in the fourth embodiment includes two first heat exchange channels 10 and one second heat exchange channel 30 .

[0429] Specifically, the second heat exchange channel 30 is arranged between the two first heat exchange channels 10. The second heat exchange channel 30 has a different structure from the first heat exchange channel 10. The second heat exchange channel 30 includes two fourth heat exchange sections 31 extending straight along the X1 direction. The two fourth heat exchange sections 31 are arranged at intervals along the Y1 direction and bent to form a U-shaped heat exchange channel.

[0430] In the description of this specification, reference to the terms "some embodiments," "optionally," "further," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples.

[0431] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A battery, characterized in that: include: The box body comprises a box body having a receiving cavity, and a wall of the box body is formed with a groove; a battery cell, the battery cell being disposed in the accommodating cavity; A heat exchange component, at least part of which is embedded in the groove and adheres to the wall, and is used for heat exchange with the battery cell.

2. The battery according to claim 1, characterized in that The heat exchange element is completely accommodated in the groove, and the upper surface of the heat exchange element along the thickness direction is flush with the notch of the groove.

3. The battery according to claim 1, characterized in that The box body includes: a box body, which is surrounded by multiple box walls, at least one of the multiple box walls forms the groove, and the groove is located on the inner side of the box wall close to the accommodating cavity and / or the outer side away from the accommodating cavity, and when the groove is located on the inner side, the groove is connected to the accommodating cavity.

4. The battery according to claim 3, characterized in that The box body includes a bottom plate and multiple side panels arranged around the periphery of the bottom plate and connected in sequence end to end. The groove is formed on the bottom plate. The box body is an integral stamped part, or the multiple side panels are profile frames, and the bottom plate is an integral stamped part.

5. The battery according to claim 1, characterized in that The box body comprises: The box body is a semi-enclosed structure with an open end; A cover plate is connected to the box body and closes the opening. The groove is formed on the cover plate and is located on the inner side of the cover plate close to the accommodating cavity or on the outer side away from the accommodating cavity. When the groove is located on the inner side, the groove is connected to the accommodating cavity.

6. The battery according to claim 5, characterized in that The cover plate is an integral stamped part.

7. The battery according to claim 3 or 5, characterized in that The box body includes a bottom plate and a plurality of side plates arranged around the periphery of the bottom plate and connected end to end in sequence. The side plates and the bottom plate are made of the same material and are formed separately and welded together.

8. The battery according to any one of claims 1 to 7, characterized in that The heat exchange element includes at least one heat exchange tube. When there are multiple heat exchange tubes, a heat exchange channel is defined on the inner side of each heat exchange tube.

9. The battery according to claim 8, characterized in that The heat exchange tube is formed by bending a single tube. Optionally, the heat exchange tube is bent in an arc shape at the bending position.

10. The battery according to claim 8, characterized in that The groove is loosely fitted with the heat exchange tube and extends along the length direction of the heat exchange tube.

11. The battery according to claim 8, characterized in that The heat exchange tube is a flat tube or a harmonica tube.

12. The battery according to claim 8, characterized in that The box body further comprises a beam body, wherein the beam body is arranged in the box body, and a channel for allowing the heat exchange tube to pass through is constructed between the beam body and the box body.

13. The battery according to claim 12, characterized in that The beam body has a first recess, and / or the box body has a second recess, and the first recess and / or the second recess configure the channel.

14. The battery according to claim 13, characterized in that The beam body is a hollow beam, and a portion of the beam body protrudes toward the inner side of the hollow beam to form the first recess.

15. The battery according to claim 12, characterized in that The beam body is an expansion beam, which can expand or contract along the second direction, or the beam body is a non-metallic beam body.

16. The battery according to any one of claims 1 to 15, characterized in that The heat exchange element includes a first heat exchange channel, which 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.

17. The battery according to claim 16, characterized in that The second heat exchange section is located at the outermost side of the first heat exchange channel in the circumferential direction.

18. The battery according to claim 16, characterized in that The first heat exchange section and the second heat exchange section are bent in the same plane.

19. The battery according to any one of claims 16 to 18, characterized in that The first heat exchange section is connected downstream of the second heat exchange section along the direction of fluid flow; or, the heat exchange element is configured as follows: when heating the battery assembly of the battery, the first heat exchange section is connected downstream of the second heat exchange section along the direction of fluid flow; when cooling the battery assembly of the battery, the first heat exchange section is connected upstream of the second heat exchange section along the direction of fluid flow.

20. The battery according to claim 16, characterized in that The heat exchange element has one or more heat exchange channels. When the number of the heat exchange channels is multiple, the multiple heat exchange channels are arranged at intervals along the first direction, or arranged around each other, at least one heat exchange channel is formed as the first heat exchange channel, and multiple heat exchange channels are arranged in parallel.

21. The battery according to claim 20, characterized in that The plurality of heat exchange channels are arranged at intervals along the first direction, and the two heat exchange channels located at both ends of the first direction are both the first heat exchange channels; and the two first heat exchange channels are arranged symmetrically about the center line of the heat exchange element along the second direction, wherein the second direction is set at an angle to the first direction.

22. The battery according to claim 20, characterized in that The plurality of heat exchange channels are symmetrically arranged about a center line of the heat exchange element along the second direction.

23. The battery according to claim 20, characterized in that The plurality of heat exchange channels further include: at least one second heat exchange channel, the second heat exchange channel being arranged between two of the first heat exchange channels, wherein the structure of any one of the second heat exchange channels is the same as or different from the structure of the first heat exchange channel.

24. The battery according to claim 21, characterized in that The second heat exchange channel includes a plurality of fourth heat exchange segments, which are sequentially connected. The fourth heat exchange segments extend along the second direction, and the plurality of fourth heat exchange segments are arranged at intervals in the first direction.

25. The battery according to claim 20, characterized in that The heat exchange element has multiple heat exchange channels, and the multiple heat exchange channels include one first heat exchange channel and at least one third heat exchange channel. The third heat exchange channel is bent in the U-shaped area of the first heat exchange channel, and the first heat exchange channel and the third heat exchange channel are bent in the same plane. The bending structures of the first heat exchange channel and the third heat exchange channel are the same or different.

26. The battery according to claim 25, characterized in that The third heat exchange channel includes a U-shaped region with the same structure as the first heat exchange channel, and at least a portion of the first heat exchange section of the first heat exchange channel is disposed in the U-shaped region of the third heat exchange channel.

27. The battery according to claim 25, characterized in that The U-shaped region of the first heat exchange channel is located at the outermost circumference of the heat exchange element.

28. An electrical device, characterized in that: include: The battery according to any one of claims 1 to 27.

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