Case, battery and electrical device

Abstract

A case (300), a battery (400), and an electrical device (500). The case (300) comprises: a frame (310) and a support plate (320), wherein the support plate (320) is arranged on one side of the frame (310) and, with the frame (310), encloses an accommodating space; the support plate (320) comprises: a plurality of structural plates (321), buffer layers (322) arranged between adjacent structural plates (321), and a heat exchange member (100) arranged on the side of the structural plate (321) adjacent to the accommodating space that faces away from the frame (320).

Description

Box, battery and electrical device

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application number "202410171624.3" filed by Contemporary Amperex Technology Co., Ltd. on February 6, 2024, with application name "Box, Battery and Electrical Device". Technical Field

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

[0004] In related technologies, the box is suitable for accommodating battery cells. During the charging and discharging process, the battery cells will generate a lot of heat. The battery cells can be cooled by setting a cooling structure. When the battery cells are used in a cold environment, the battery life will be reduced. The battery cells can be heated by setting a heating structure.

[0005] However, at present, after the heat exchange plate is integrated at the bottom of the box, the reliability of the box needs to be further improved.

[0006] Summary of the Invention

[0007] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the embodiments of the present application provide a box, a battery, and an electrical device, which can improve the reliability of the battery, the energy storage system, and the electrical device by improving the reliability of the box.

[0008] An embodiment of the present application provides a box body, including: a frame and a support plate, the support plate is arranged on one side of the frame, and encloses a accommodating space with the frame, the support plate includes: a multi-layer structural plate, a buffer layer arranged between adjacent structural plates, a heat exchanger arranged on the side of the structural plate adjacent to the accommodating space away from the frame, and at least one structural plate is connected to the frame.

[0009] According to some embodiments of the present application, 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.

[0010] According to some embodiments of the present application, the second heat exchange section is located at the outermost side of the first heat exchange channel in the circumferential direction.

[0011] According to some embodiments of the present application, the first heat exchange section and the second heat exchange section are bent in the same plane.

[0012] According to some embodiments of the present application, the first heat exchange section includes a plurality of first heat exchange parts, and the plurality of first heat exchange parts are arranged at intervals and are bent and connected in sequence.

[0013] According to some embodiments of the present application, a plurality of first heat exchange portions are arranged at intervals along a first direction, each first heat exchange portion extends linearly along a second direction, and the first direction and the second direction are arranged at an angle.

[0014] According to some embodiments of the present application, the second heat exchange section includes: a second heat exchange part, a third heat exchange part and a fourth heat exchange part, the second heat exchange part extends along the first side circumference of the first heat exchange section, the third heat exchange part is connected between the second heat exchange part and the first heat exchange section, and extends along the second side circumference of the first heat exchange section, the first end of the third heat exchange part is connected to the second heat exchange part at an angle, and the second end of the third heat exchange part is connected to the first heat exchange section at an angle; the fourth heat exchange part is communicated with the second heat exchange part, is connected to the second heat exchange part at an angle, and extends along the third side circumference of the first heat exchange section.

[0015] According to some embodiments of the present application, the first heat exchange section includes a plurality of first heat exchange parts, and the plurality of first heat exchange parts are bent and connected in sequence in the first direction; wherein, the second heat exchange part is located on one side of the plurality of first heat exchange parts along the first direction, and the third heat exchange part is located on one side of the plurality of first heat exchange parts along the second direction, and the first direction and the second direction are arranged at an angle; a first end of the third heat exchange part is connected to one end of the second heat exchange part along the second direction, and a second end of the third heat exchange part is connected to the one of the plurality of first heat exchange parts farthest from the second heat exchange part along the first direction; a fourth heat exchange part is located on the other side of the plurality of first heat exchange parts along the second direction, and one end of the fourth heat exchange part is connected to an end of the second heat exchange part away from the third heat exchange part, and the fourth heat exchange part is connected to the The other end of the part extends along the first direction toward a direction away from the second heat exchange part; or the second heat exchange part is located on one side of the multiple first heat exchange parts along the second direction, and the third heat exchange part is located on one side of the multiple first heat exchange parts along the first direction, and the first direction and the second direction are arranged at an angle; a first end of the third heat exchange part is connected to one end of the second heat exchange part along the first direction, and the second end of the third heat exchange part is connected to one of the multiple first heat exchange parts that is closest to the third heat exchange part along the first direction, and the fourth heat exchange part is located on the other side of the multiple first heat exchange parts along the first direction, one end of the fourth heat exchange part is connected to one end of the second heat exchange part away from the third heat exchange part, and the other end of the fourth heat exchange part extends along the second direction toward a direction away from the second heat exchange part.

[0016] According to some embodiments of the present application, the third heat exchange part and the fourth heat exchange part are extended along the first direction, and the first heat exchange part and the second heat exchange part are both extended along the second direction; or the first heat exchange part, the third heat exchange part and the fourth heat exchange part are all extended along the second direction, and the second heat exchange part is extended along the first direction.

[0017] According to some embodiments of the present application, the third heat exchange section and the fourth heat exchange section are both extended along the first direction, and in the first direction, the length of the fourth heat exchange section is less than or equal to the length of the third heat exchange section; or the first heat exchange section and the third heat exchange section extend along the second direction, the second heat exchange section extends along the first direction, and in the second direction, the length of the third heat exchange section is greater than or equal to the length of the first heat exchange section.

[0018] According to some embodiments of the present application, the fourth heat exchange portion extends along the first direction and extends to a position close to one of the plurality of first heat exchange portions that is farthest from the second heat exchange portion.

[0019] According to some embodiments of the present application, the second heat exchange section further includes: a fifth heat exchange portion, which extends along the fourth side periphery of the first heat exchange section and closes at least part of the opening of the U-shaped area formed by the second heat exchange portion, the third heat exchange portion and the fourth heat exchange portion.

[0020] According to some embodiments of the present application, the fifth heat exchange part is arranged opposite to the second heat exchange part, the fifth heat exchange part is connected between the second end of the third heat exchange part and the first heat exchange section, and is connected to the third heat exchange part at an angle, and is connected to the first heat exchange section at an angle; or, one end of the fifth heat exchange part is connected to an end of the fourth heat exchange part away from the second heat exchange part, and the fifth heat exchange part is connected to the fourth heat exchange part at an angle.

[0021] According to some embodiments of the present application, the first heat exchange channel further includes: a third heat exchange section, the first heat exchange section is connected between the third heat exchange section and the second heat exchange section, and the third heat exchange section is connected to the first heat exchange section at an angle.

[0022] According to some embodiments of the present application, the first heat exchange section includes a plurality of first heat exchange parts, which are bent and connected in sequence in the first direction; the third heat exchange section is arranged on the side of the first heat exchange section away from the third heat exchange part, and the third heat exchange section is connected to the one of the plurality of first heat exchange parts that is closest to the second heat exchange part along the first direction.

[0023] According to some embodiments of the present application, the third heat exchange section extends along a first direction away from the second heat exchange portion, and the first heat exchange portion extends along a second direction, wherein the first direction and the second direction are arranged at an angle.

[0024] According to some embodiments of the present application, the third heat exchange section extends along the first direction to a position close to one of the plurality of first heat exchange parts that is farthest from the second heat exchange part.

[0025] According to some embodiments of the present application, 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, 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.

[0026] According to some embodiments of the present application, the box body 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.

[0027] According to some embodiments of the present application, a plurality of heat exchange channels are arranged at intervals along a first direction, and the two heat exchange channels located at both ends of the first direction are both first heat exchange channels; and the two first heat exchange channels are symmetrically arranged about the center line of the box along a second direction, wherein the second direction is set at an angle to the first direction.

[0028] According to some embodiments of the present application, the plurality of heat exchange channels are symmetrically arranged about a center line of the housing along the second direction.

[0029] According to some embodiments of the present application, the multiple heat exchange channels also include: at least one second heat exchange channel, the second heat exchange channel is arranged between the two first heat exchange channels, wherein the structure of any second heat exchange channel is the same as or different from the structure of the first heat exchange channel.

[0030] According to some embodiments of the present application, the second heat exchange channel includes multiple fourth heat exchange segments, which are connected in sequence, wherein the fourth heat exchange segments extend along the second direction, and the multiple fourth heat exchange segments are arranged at intervals in the first direction.

[0031] According to some embodiments of the present application, 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 fourth heat exchange channel. The fourth heat exchange channel is bent in the U-shaped area of ​​the first heat exchange channel, and the first heat exchange channel and the fourth heat exchange channel are bent in the same plane. The bending structures of the first heat exchange channel and the fourth heat exchange channel are the same or different.

[0032] According to some embodiments of the present application, the fourth heat exchange channel includes a U-shaped region with the same structure as the first heat exchange channel, and at least part of the first heat exchange section of the first heat exchange channel is arranged in the U-shaped region of the fourth heat exchange channel.

[0033] According to some embodiments of the present application, the U-shaped region of the first heat exchange channel is located at the outermost circumference of the heat exchange element.

[0034] According to some embodiments of the present application, the box includes at least one heat exchange tube. When there are multiple heat exchange tubes, the multiple heat exchange tubes are arranged at intervals along the first direction, and a heat exchange channel is defined on the inner side of each heat exchange tube.

[0035] According to some embodiments of the present application, the buffer layer is constructed as a porous structure.

[0036] According to some embodiments of the present application, the holes on the buffer layer extend in opposite directions of adjacent structural plates.

[0037] According to some embodiments of the present application, the buffer layer is constructed as a plastic material piece or a metal material piece; when the buffer layer is constructed as a plastic material piece, the buffer layer is hot-melt pressed to the structural plate; when the buffer layer is constructed as a metal material piece, the buffer layer is brazed to the structural plate.

[0038] According to some embodiments of the present application, the structural plate includes: a first structural plate to an Nth structural plate arranged sequentially in the arrangement direction of the frame and the support plate, N≥2, and at least the first structural plate and the Nth structural plate are connected to the frame.

[0039] According to some embodiments of the present application, a connecting flange is provided on the side of the frame facing the support plate, the structural dimensions of the buffer layer are smaller than the structural dimensions of the structural plate to define a slot, and the connecting flange extends into the slot; or the connecting flange is overlapped on the first structural plate.

[0040] According to some embodiments of the present application, the minimum overlap size between the structural plate and the connecting flange is 6 mm.

[0041] According to some embodiments of the present application, the structural dimensions of the first structural plate are smaller than the structural dimensions of the Nth structural plate, and the first structural plate is connected to the connecting flange, and the Nth structural plate is connected to the end face of the frame; or the structural dimensions of the first structural plate are equal to the structural dimensions of the Nth structural plate, and both the first structural plate and the Nth structural plate are connected to the connecting flange.

[0042] The present application provides a battery, comprising: the box body in the above embodiment.

[0043] The present application provides an electrical device, comprising: the battery in the above embodiment.

[0044] 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

[0045] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0046] FIG1 is a schematic diagram of an electrical device according to an embodiment of the present application;

[0047] FIG2 is a schematic diagram of a battery according to an embodiment of the present application;

[0048] FIG3 is a schematic diagram of a battery assembly and a heat exchange element according to a first embodiment of the present application;

[0049] FIG4 is a schematic diagram of a battery assembly and a heat exchange element according to a second embodiment of the present application;

[0050] FIG5 is a schematic diagram of a battery assembly and a heat exchange element according to a third embodiment of the present application;

[0051] FIG6 is a schematic diagram of a battery assembly and a heat exchange element according to a fourth embodiment of the present application;

[0052] FIG7 is a schematic diagram of a battery assembly and a heat exchange element according to a fifth embodiment of the present application;

[0053] FIG8 is a schematic diagram of a heat exchange element and a battery box according to some embodiments of the present application;

[0054] FIG9 is a schematic diagram of a heat exchange element and a housing according to other embodiments of the present application;

[0055] FIG10 is a schematic diagram of a battery assembly and a heat exchange element according to a sixth embodiment of the present application;

[0056] FIG11 is a schematic diagram of a battery assembly and a heat exchange element according to a seventh embodiment of the present application;

[0057] FIG12 is a schematic diagram of a battery assembly and a heat exchange element according to an eighth embodiment of the present application;

[0058] FIG13 is a schematic diagram of a battery assembly and a heat exchange element according to a ninth embodiment of the present application;

[0059] FIG14 is a schematic diagram of a battery assembly and a heat exchange element according to a tenth embodiment of the present application;

[0060] FIG15 is a schematic diagram of a battery assembly and a heat exchange element according to an eleventh embodiment of the present application;

[0061] FIG16 is a schematic diagram of a disassembled box according to an embodiment of the present application;

[0062] FIG17 is a schematic diagram of a support plate according to an embodiment of the present application;

[0063] FIG18 is an exploded schematic diagram of a support plate according to an embodiment of the present application;

[0064] FIG19 is a partially enlarged schematic diagram of a buffer layer according to an embodiment of the present application;

[0065] FIG20 is a partial schematic diagram of the cooperation between a support plate and a frame according to an embodiment of the present application; and

[0066] FIG21 is a partial schematic diagram of another cooperation between a support plate and a frame according to an embodiment of the present application. DETAILED DESCRIPTION

[0067] 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.

[0068] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply 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 this application.

[0069] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. Furthermore, in the description of this application, unless otherwise specified, "plurality" means two or more.

[0070] During operation, battery cells will generate a lot of heat, and if the heat cannot be dissipated in time, the operating temperature of the battery cells will be too high, and even thermal runaway will be caused. In a cold environment, the activation energy of the electrolyte in the battery cells will decrease, which will cause the efficiency of the battery cells to decrease and the battery life will be reduced. Therefore, it is necessary to set up a temperature regulation structure to adjust the operating temperature of the battery cells to avoid the operating temperature of the battery cells being too high, improve the working stability and reliability of the battery cells, reduce the probability of thermal runaway of the battery cells, avoid the operating temperature of the battery cells being too low, keep the efficiency of the battery cells stable, improve or even avoid the battery life reduction, improve the user experience, and expand the usage scenarios.

[0071] The battery cell may be a secondary battery. A secondary battery refers to a battery cell that can be recharged to activate the active material after the battery cell is discharged and can be used continuously.

[0072] The battery cell can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel metal hydride battery, a nickel cadmium battery, a lead storage battery, etc., which is not limited in the embodiments of the present invention.

[0073] The battery mentioned in the embodiments of the present invention refers to a single physical module including one or more battery cells to provide higher voltage and capacity. When there are multiple battery cells, the multiple battery cells are connected in series, in parallel or in hybrid through a busbar.

[0074] In some embodiments, a plurality of battery cells may be combined into a battery unit. That is, when there are a plurality of battery cells, the plurality of battery cells are arranged and fixed to form a battery unit.

[0075] In some embodiments, the battery includes a case and battery cells, at least one battery cell or at least one battery unit is accommodated in the case, and the case has an accommodating space, and at least one battery cell or at least one battery unit is accommodated in the accommodating space.

[0076] In some embodiments, the box body can be used as a part of the chassis structure of the vehicle. For example, part of the box body can become at least a part of the floor of the vehicle, or part of the box body can become at least a part of the cross beam and longitudinal beam of the vehicle.

[0077] In some embodiments, the battery or battery unit may be part of an energy storage system, which may be an energy storage container, an energy storage cabinet, etc., in which the battery and the energy shutdown module are integrated.

[0078] The development of battery technology must take into account multiple design factors at the same time, such as energy density, cycle life, discharge capacity, charge and discharge rate and other performance parameters. In addition, the safety performance of the battery also needs to be considered.

[0079] The technical solutions described in the embodiments of the present utility model are applicable to batteries and electrical devices using batteries.

[0080] Electrical devices may include vehicles, mobile phones, portable devices, laptop computers, ships, spacecraft, electric toys, and electric tools, etc. Vehicles may include fuel vehicles, gas vehicles, or new energy vehicles. New energy vehicles may include pure electric vehicles, hybrid vehicles, or extended-range vehicles, etc. Spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc. Electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools, and railway electric tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc. The embodiments of the present utility model do not impose any special restrictions on the above-mentioned electrical devices.

[0081] For the convenience of description, the following embodiments are described by taking a vehicle as an example of an electrical device.

[0082] Please refer to Figure 1, which is a schematic diagram of the structure of a vehicle provided by some embodiments of the present invention. A battery 400 is installed inside the vehicle. Battery 400 can be located at the bottom, front, or rear of the vehicle. Battery 400 can be used to power the vehicle, for example, as the vehicle's operating power source.

[0083] The vehicle may further include a controller 600 and a motor 700 . The controller 600 is used to control the battery 400 to supply power to the motor 700 . The motor 700 serves as a load, for example, to meet the power requirements for starting, navigating, and driving the vehicle.

[0084] In some embodiments of the present invention, the battery 400 can serve not only as an operating power source for the vehicle, but also as a driving power source for the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0085] Please refer to Figure 2, which is an exploded view of a battery 400 provided in some embodiments of the present invention. The battery 400 includes a battery cell 201 and a housing 300, wherein the housing 300 is used to accommodate the battery cell 201.

[0086] The housing 300 is a component that houses the battery unit 201. The housing 300 provides storage space for the multiple battery cells 2011 within the battery unit 201. The housing 300 can have various structures. In some embodiments, the housing 300 can include a tray and the housing 300, which cover the tray and the housing 300 to define a storage space for the battery cells 2011. The tray and the housing 300 can have various shapes, such as a rectangular parallelepiped or a cylinder. The tray can be a hollow structure with one side open, and the housing 300 can also be a hollow structure with one side open. The open side of the housing 300 covers the open side of the tray, forming the housing 300 with storage space. Alternatively, the tray can be a hollow structure with one side open, and the housing 300 can be a plate-like structure. The housing 300 covers the open side of the tray, forming the housing 300 with storage space. As an example, the battery cell 2011 may be a cylindrical battery cell 2011 , a prismatic battery cell 2011 , a soft-pack battery cell 2011 , or a battery cell 2011 of other shapes, which is not particularly limited in the present invention.

[0087] In the battery 400, there can be one or more battery cells 2011. If there are multiple battery cells 2011, the multiple battery cells 2011 can be connected in series, in parallel, or in a hybrid connection. A hybrid connection refers to a combination of series and parallel connections within the multiple battery cells 2011. Multiple battery cells 2011 can be connected in series, in parallel, or in a hybrid connection to form a battery unit 201. The multiple battery units 201 are then connected in series, in parallel, or in a hybrid connection to form a single unit and housed within the housing 300. Alternatively, all battery cells 2011 can be directly connected in series, in parallel, or in a hybrid connection, and then the entire unit formed by all battery cells 2011 is housed within the housing 300.

[0088] In the battery 400, the heat exchange element 100 can be disposed between the multiple battery cells 2011 and the top wall of the housing 300, between the multiple battery cells 2011 and the bottom wall of the housing 300, between the bottom wall of the housing 300 and the bottom guard plate, or between two adjacent battery cells 2011, thereby providing heat exchange for the multiple battery cells 2011. In the embodiment of the present application, the heat exchange element 100 can include a heat exchange tube integrated into the bottom wall of the housing 300. The heat exchange tube can be a flat tube, a round tube, a harmonica tube, or other shaped tube.

[0089] The battery cell 2011 is the smallest energy unit of the battery unit 201 or the battery 400. The battery unit 201 or the battery 400 includes multiple battery cells 2011. The battery cell 2011 includes a large face of the battery 400 defined by the width edge and the length edge of the battery cell 2011, a small face of the battery 400 defined by the width edge and the height edge, and an end face of the battery 400 defined by the length edge and the width edge. In order to enable the battery cell 2011 to be used in a cold environment, the battery cell 2011 can be used in a cold environment. A heating film is affixed to the surface of the battery 400 (such as the large surface of the battery 400, the small surface of the battery 400 or the end surface of the battery 400) to achieve heating of the battery cell 2011. At the same time, a cooling structure can be set corresponding to the large surface of the battery 400, the small surface of the battery 400 or the end surface of the battery 400 to achieve cooling and cooling of the battery cell 2011, and then achieve cooling and cooling of the entire battery 400. Of course, a heat exchange structure can also be set on the large surface of the battery 400, the small surface of the battery 400 or the end surface of the battery 400, and the heat exchange structure can achieve cooling and heating.

[0090] However, in the prior art, the heat exchange plate can be set on the bottom surface of the box body 300, and a sealing structure that cooperates with the heat exchange plate needs to be set, such as a sealing gasket, a mounting structure, an installation structure, etc., resulting in a complex overall structure of the battery 400, a large number of parts, cumbersome installation, and high cost. The number of sealing interfaces between the heat exchange plate and the box body 300 is also large, resulting in higher sealing costs. The heat exchange plate uses a lot of materials and has a complex process, which will also increase the cost. At the same time, the bottom plate and the heat exchange plate are both planar structures, and the bottom plate needs to be set on it for load-bearing, which will reduce the bottom contour of the box body 300, resulting in a poor bottom contour of the box body 300.

[0091] In view of this, the embodiment of the present invention provides a box body 300, the bottom plate of the box body 300 (i.e., the support plate 320) is constructed as a multi-layer structural plate 321 structure, a buffer layer 322 is set between adjacent structural plates 321, and a heat exchanger 100 is set below the uppermost structural plate 321. The support plate 320 is constructed as an integrated plate structure, and there is no need to set a separate heat exchange plate structure. On the one hand, the structure of the box body 300 can be simplified, so that the overall structure of the battery 400 is simpler, the number of parts is reduced, the installation difficulty is lower, the cost is lower, and it can reduce The number of seals is reduced, and the number of sealing interfaces is reduced to reduce sealing costs and improve sealing performance. On the other hand, the structural strength and structural rigidity of the support plate 320 can be improved by the buffer layer 322, and the weight of the cooling component arranged in the support plate 320 is much lower than the weight of the heat exchange plate structure, which can reduce the load on the support plate 320 and improve the structural rigidity of the support plate 320 to improve the bottom contour of the box body 300, making the bottom surface of the box body 300 smoother, with a lower probability of scratches and bottoming, a longer service life, and higher stability.

[0092] The following describes the housing 300 , the battery 400 , the energy storage system, and the electrical equipment according to an embodiment of the present application with reference to FIG. 1 to FIG. 21 .

[0093] As shown in Figures 2 and 16, an embodiment of the present application provides a box body 300, including: a frame 310 and a support plate 320, the support plate 320 is arranged on one side of the frame 310, and encloses a accommodating space with the frame 310, the support plate 320 includes: a multi-layer structural plate 321, a buffer layer 322 arranged between adjacent structural plates 321, a heat exchanger 100 arranged on the side of the structural plate 321 adjacent to the accommodating space away from the frame 310, and at least one structural plate 321 is connected to the frame 310.

[0094] Taking the front-to-back direction (length direction) of the box 300 as the first direction (also known as the Z direction in the figure), the left-to-right direction (width direction) as the second direction (also known as the Y1 direction in the figure), and the up-down direction (height direction) as the third direction (also known as the X1 direction in the figure) as an example, the box 300 of an embodiment of the present application is specifically described.

[0095] The frame 310 is generally a rectangular frame and has a first opening and a second opening opposite to each other in the height direction. The support plate 320 is arranged at the bottom end of the frame 310 and is suitable for blocking the first opening. The box body 300 can also be provided with a cover plate 330, which is suitable for blocking the second opening, so that the box body 300 forms a storage space that can be selectively opened and closed, and the storage space is suitable for accommodating components such as battery cells 2011 and battery 400 management units.

[0096] The support plate 320 can be constructed as a sandwich plate structure or a multi-layer sandwich plate structure, including at least two layers of structural plates 321, and a buffer layer 322 can be arranged between adjacent structural plates 321. A heat exchanger 100 can be arranged on one side of the lower surface of the uppermost structural plate 321 (that is, the side of the structural plate 321 adjacent to the accommodating space facing away from the frame 310) to improve the structural strength and structural rigidity of the support plate 320 through the buffer layer 322. The heat exchanger 100 arranged inside the support plate 320 can achieve temperature regulation (such as heating or cooling) of the battery cell 2011.

[0097] The support plate 320 is the bottom plate of the box body 300. The structural plate 321, the heat exchange element 100 and the buffer layer 322 are integrated into a composite plate body. The thermal management function can be integrated without setting a heat exchange plate. Correspondingly, there is no need to set a mounting structure, an installation structure and a sealing structure that match the heat exchange plate. The structure of the box body 300 can be simplified, the installation steps can be simplified, the installation difficulty can be reduced, the cost can be reduced and the reliability of the box body 300 can be improved. The number of sealing interfaces can be reduced, and a sealing interface is formed only between the frame 310 and the support plate 320. The sealing difficulty is smaller and the sealing cost is lower. The buffer layer 322 can improve the structural rigidity and structural strength of the support plate 320, so that the contour of the lower surface of the box body 300 is higher and the surface is smoother, which can reduce the probability of scratches and bottom dragging, improve the stability and reliability of the box body 300, and extend the service life.

[0098] According to the box body 300 of the embodiment of the present application, the support plate 320 adopts an integrated composite plate structure of a structural plate 321, a buffer layer 322 and a heat exchanger 100, which can not only simplify the structure of the box body 300, reduce the difficulty of installation, and reduce the number of sealing interfaces, so as to reduce the sealing cost and production cost of the box body 300, but also improve the structural strength and rigidity of the box body 300, so as to improve the bottom surface contour of the box body 300, improve the reliability and stability of the box body 300, and extend the service life of the box body 300.

[0099] An embodiment of the present application proposes a heat exchange element 100, as shown in Figure 3, the heat exchange element 100 is used for a battery 400, and the heat exchange element 100 includes a first heat exchange channel 10, and 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, and 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.

[0100] The battery 400 may include multiple battery cells 2011 , and the first heat exchange channel 10 is used to exchange heat with the multiple battery cells 2011 of the battery 400 , so that the temperature of the battery 400 can be limited to a safe operating temperature, thereby ensuring the operating reliability of the battery 400 .

[0101] The above “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” 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 400 relative to the first heat exchange section 11.

[0102] 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 .

[0103] 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.

[0104] In this embodiment, only the first heat exchange section 11 is defined as being bent within the U-shaped region 120, and the bending form of the first heat exchange section 11 is not defined. 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 400. For example, the first heat exchange section 11 can extend along the length direction of the battery cell 2011 (i.e., the Y1 direction in FIG. 3 ), and after extending to a certain length, bend toward the width direction of the battery cell 2011 (i.e., the X1 direction in FIG. 3 ), and then continue to extend along the length direction of the battery cell 2011 and bend along the width direction. Alternatively, the first heat exchange section 11 can extend along the width direction of the battery cell 2011, and after extending to a certain length, bend toward the length direction of the battery cell 2011, and then continue to extend along the width direction of the battery cell 2011 and bend along the length direction.

[0105] 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.

[0106] 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 heat exchange medium 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.

[0107] As the heat exchange fluid flows through the first heat exchange channel 10, the temperature of the heat exchange 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 cells 2011 is gradually transferred to the heat exchange fluid, causing the temperature of the heat exchange fluid to gradually increase as it flows along the first heat exchange channel 10. The temperature difference between the heat exchange fluid and the battery cells 2011 gradually decreases, and the heat exchange efficiency gradually decreases. When the heat exchange element 100 heats the battery assembly 200, the heat in the heat exchange fluid is gradually transferred to the battery cells 2011, causing the temperature of the heat exchange fluid to gradually decrease as it flows along the first heat exchange channel 10. The temperature difference between the heat exchange fluid and the battery cells 2011 gradually decreases, and the heat exchange efficiency gradually decreases.

[0108] In this embodiment, when the heat exchange element 100 dissipates heat and cools the battery assembly 200, the heat exchange fluid can also flow from the first heat exchange section 11 to the second heat exchange section 12, but the heat exchange fluid can also flow from the second heat exchange section 12 to the first heat exchange section 11. When the heat exchange fluid also flows from the first heat exchange section 11 to the second heat exchange section 12, the battery cells 2011 in the middle of the battery 400 (that is, the internal battery cells 2011 on the inner side of the periphery) can be cooled first, and then the battery cells 2011 at the peripheral edge of the battery 400 can be cooled. Since the heat dissipation of the battery cells 2011 at the peripheral edge of the battery 400 is better than that of the internal battery cells 2011, the heat exchange fluid with a lower temperature in the first heat exchange section 11 can better meet the heat dissipation requirements of the battery cells 2011 at the middle of the battery 400, and at the same time, The battery cells 2011 at the peripheral position can dissipate heat naturally directly to the external environment. When the temperature of the heat exchange fluid in the second heat exchange section 12 is slightly higher, it can still meet the heat dissipation needs of the peripheral battery cells 2011, so that the cooling effects obtained by the battery cells 2011 at the peripheral position of the battery 400 and the battery cells 2011 at the middle position of the battery 400 are roughly the same, and the temperatures of the battery cells 2011 at the peripheral position of the battery 400 and the battery cells 2011 at the middle position of the battery 400 after cooling and heat dissipation are relatively consistent, making the temperature distribution inside the battery 400 more uniform.

[0109] When the heat exchange element 100 heats the battery assembly 200, the heat exchange fluid can also flow from the first heat exchange section 11 to the second heat exchange section 12, but the heat exchange fluid can also flow from the second heat exchange section 12 to the first heat exchange section 11. For example, when the heat exchange fluid flows from the second heat exchange section 12 to the first heat exchange section 11, the battery cells 2011 at the periphery of the battery assembly 200 can be heated first, and then the heat exchange fluid can cool the battery cells 2011 at the middle of the battery assembly 200. Since the battery cells 2011 at the periphery of the battery 400 dissipate more heat to the external environment, the temperature of the battery cells 2011 at the periphery of the battery 400 is more likely to drop. The heat exchange fluid first heats the battery cells 2011 at the periphery of the battery 400. The higher temperature heat exchange fluid can increase the temperature of the battery cells 2011 at the periphery while compensating for the heat lost by the battery cells 2011 due to heat dissipation to the external environment. To meet its heating needs, the battery cells 2011 in the middle of the battery assembly 200 have less contact area with the external environment and less heat loss. The lower temperature heat exchange fluid flowing in the first heat exchange section 11 can cooperate with the heat generated by the battery cells 2011 themselves to meet its heating needs well. As a result, the heating effects obtained by the battery cells 2011 on the periphery of the battery 400 and the battery cells 2011 in the middle of the battery assembly 200 are basically the same, and the temperatures of the battery cells 2011 on the periphery of the battery 400 and the battery cells 2011 in the middle of the battery assembly 200 after heating are relatively consistent, making the temperature distribution in the battery 400 more uniform.

[0110] In the above embodiment, 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 compensate for the internal and external temperature difference caused by the heat exchange between the outer battery cells 2011 and the environment, so that the heat exchange effect of the battery cells 2011 on the periphery of the battery assembly 200 and the battery cells 2011 inside the battery assembly 200 tend to be consistent, thereby improving the temperature uniformity of the battery 400, thereby improving the service life of the battery 400 to a certain extent.

[0111] According to some embodiments of the present application, as shown in FIG. 3 , the second heat exchange section 12 may be located at the outermost side of the first heat exchange channel 10 in the circumferential direction.

[0112] 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 2011 around the battery 400, thereby improving the temperature uniformity of the battery cells 2011 around the battery 400.

[0113] In the above embodiment, 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 2011 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.

[0114] 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.

[0115] In the above embodiment, 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 with the battery 400 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 400.

[0116] According to some embodiments of the present application, as shown in FIG. 3-FIG . 4 , 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 bent and connected in sequence.

[0117] 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.

[0118] The first heat exchange portion 111 can have various shapes, for example, a straight line or an arc. The first heat exchange portion 111 can also extend in various directions, for example, along the length or thickness of the battery cell 2011. Thus, by sequentially bending and connecting multiple first heat exchange portions 111, the first heat exchange section 11 can form an S-shaped, X-shaped, or V-shaped heat exchange channel.

[0119] In the above embodiment, on the one hand, by providing a plurality of 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 providing a plurality of 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.

[0120] According to some embodiments of the present application, as shown in Figure 3, a plurality of first heat exchange parts 111 are arranged at intervals along a first direction (i.e., the Y1 direction shown in Figure 4), and each first heat exchange part 111 extends in a straight line along a second direction (i.e., the X1 direction shown in Figure 4), and the first direction and the second direction are set at an angle.

[0121] 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 intersectingly in a non-perpendicular arrangement. 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 FIG4 , the first direction is the length direction of the battery cell 2011, and the second direction is the thickness direction of the battery cell 2011. The first heat exchange portion 111 extends along the length direction of the battery cell 2011 and is arranged at intervals along the thickness direction of the battery cell 2011. 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 2011.

[0122] In the above embodiment, 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 heat exchange fluid, and thus improve the heat exchange effect of the first heat exchange channel 10.

[0123] According to some embodiments of the present application, as shown in FIG3 , 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 .

[0124] 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 predetermined 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, wherein 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.

[0125] The number of the first bending portions 112 can be one, two, three or more. The first bending portions 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.

[0126] In the above-described embodiment, 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 between the two first heat exchange sections 111 and a circuitous extension of the first heat exchange channel 10. This increases the contact area between a single battery cell and the first heat exchange channel 10, thereby increasing the heat exchange area and improving the heat exchange efficiency of the first heat exchange channel 10. Furthermore, the arc-shaped first bend 112 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. Furthermore, the provision of the first bend 112 makes the structure of the first heat exchange section 11 more compact, occupies a smaller overall space, and is more conducive to the miniaturization of the battery 400, thereby ensuring the volumetric energy density of the battery 400.

[0127] According to some embodiments of the present application, as shown in FIG. 3 , the first bending portion 112 may be in a semicircular arc shape.

[0128] 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. The first bend portion 112 is used to connect two first heat exchange portions 111 that are parallel to each other and spaced apart. In other embodiments, the bending degree of the first bend portion 112 can also be adjusted according to demand, for example, it can be 150°, 135°, etc., and the embodiments of the present application are not limited thereto.

[0129] 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.

[0130] In the above embodiment, by setting the first bending portion 112 to be semicircular, the design diversity of the heat exchange channel can be increased, thereby improving the compatibility of the heat exchange component 100 and the battery 400; 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.

[0131] According to some embodiments of the present application, as shown in Figure 3, 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 communicated 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.

[0132] 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. 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.

[0133] 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.

[0134] 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.

[0135] 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.

[0136] 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.

[0137] In the above embodiment, 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, and realizing the miniaturization of the structure of the first heat exchange channel 10, which is beneficial to ensuring the volume energy density of the battery 400. At the same time, it can also simplify the structure of the first heat exchange channel 10 and facilitate the processing and production of the heat exchange component 100.

[0138] According to some embodiments of the present application, as shown in Figure 3, 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; 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; 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.

[0139] The multiple first heat exchange sections 111 are connected by bending in sequence in the first direction. That is, the multiple first heat exchange sections 111 are arranged sequentially in the first direction, and in the first direction, two adjacent and connected first heat exchange sections 111 are connected by bending. The first heat exchange sections 111 can 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.

[0140] 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 the multiple first heat exchange parts 111 are arranged at intervals along the first direction and connected in sequence. In this way, the heat exchange 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 heat exchange 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.

[0141] “The first direction and the second direction are arranged at an angle” is intended to explain 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°.

[0142] For example, as shown in FIG3 , the first direction may be the length direction of the battery cell 2011 , ie, the direction Y1 shown in FIG4 , and the second direction may be the thickness direction of the battery cell 2011 , ie, the direction X1 shown in FIG3 . Taking the first heat exchange channel 10 arranged in the Y1 direction away from the coordinate origin in Figure 3 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 along the Y1 direction away from the coordinate origin 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 along the X1 direction close to the coordinate origin 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 along the X1 direction away from the coordinate origin 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.

[0143] In the above embodiment, multiple first heat exchange parts 111 are arranged to be bent and connected 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.

[0144] According to some specific embodiments of the present application, as shown in Figure 3, 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 3), and the first heat exchange part 111 and the second heat exchange part 121 are both extended along the second direction.

[0145] 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.

[0146] In the above embodiment, 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.

[0147] According to some examples of the present application, as shown in Figure 3, 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.

[0148] When the length b1 of the fourth heat exchange section 125 is equal to the length a1 of the third heat exchange section 122, the fourth heat exchange section 125, the second heat exchange section 121 and the third heat exchange section 122 are connected in sequence to form a standard U-shaped flow channel; when the length b1 of the fourth heat exchange section 125 is less than the length a1 of the third heat exchange section 122, it can be beneficial to avoid other flow channel sections of the first heat exchange channel 10 (for example, avoiding the first inlet and outlet section 15 shown in Figure 3), avoid other heat exchange channels or avoid other components, thereby being beneficial to the layout of the first heat exchange channel 10 and the compact structure.

[0149] In the above embodiment, by setting the length of the fourth heat exchange part 125 equal to the length of the third heat exchange part 122, the dimensions 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 2011 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.

[0150] According to some specific embodiments of the present application, as shown in FIG. 3 , the fourth heat exchange portion 125 extends along the first direction and extends to a position close to one of the plurality of first heat exchange portions 111 that is farthest from the second heat exchange portion 121 .

[0151] 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.

[0152] 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.

[0153] In the above embodiment, 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 2011 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 400.

[0154] According to some embodiments of the present application, as shown in Figure 5, 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; 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 that is closest to the third heat exchange part 122 along the first direction; the 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.

[0155] The multiple first heat exchange sections 111 are connected by bending in sequence in the first direction. That is, the multiple first heat exchange sections 111 are arranged sequentially in the first direction, and in the first direction, two adjacent and connected first heat exchange sections 111 are connected by bending. The first heat exchange sections 111 can 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.

[0156] 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 closest to the third heat exchange part 122 are sequentially connected, and the plurality of first heat exchange parts 111 are spaced apart and sequentially connected along the first direction. In this way, the heat exchange 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 heat exchange 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.

[0157] For example, as shown in FIG5 , the first direction may be the length direction of the battery cell 2011, that is, the direction of Y1 shown in FIG5 , and the second direction may be the thickness direction of the battery cell 2011, that is, the direction of X1 shown in FIG5 . Taking the first heat exchange channel 10 arranged in the Y1 direction away from the coordinate origin 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 along the X1 direction and extends straight along the Y1 direction, and is used to heat the battery assembly 200 from one side of the battery assembly 200 close to the coordinate origin in the X1 direction. For heat exchange, the third heat exchange part 122 is arranged on the side of the multiple first heat exchange parts 111 along the Y1 direction away from the coordinate origin and extends in a straight line in the X1 direction. The third heat exchange part 122 is used to exchange heat with the edge of the battery assembly 200 on the side away from the coordinate origin in the Y1 direction. The fourth heat exchange part 125 is arranged on the side of the multiple first heat exchange parts 111 along the Y1 direction close to the coordinate origin and extends in a straight line in the X1 direction. It can be used to exchange heat with the edge of the battery assembly 200 on the side close to the coordinate origin in the Y1 direction.

[0158] In the above embodiment, 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 400, simplify the structure of the first heat exchange channel 10, and facilitate processing and manufacturing.

[0159] According to some specific embodiments of the present application, as shown in Figure 5, 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 5), and the second heat exchange part 121 extends along the first direction (for example, the Y1 direction shown in Figure 5).

[0160] 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, while the second heat exchange portion 121 extends linearly along the first direction. The linear structure is simple, easy to manufacture, and convenient to arrange, thereby further reducing the production complexity and cost of the first heat exchange channel 10.

[0161] In the above embodiment, 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.

[0162] According to some examples of the present application, as shown in Figure 5, 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.

[0163] In the above embodiment, 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.

[0164] According to some embodiments of the present application, as shown in Figure 3, 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.

[0165] The second bending portion 123 and the third bending portion 124 are 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, respectively. The second bending portion 123 is arc-shaped, that is, the second bending portion 123 extends along the arc line, and the fluid flow directions at both ends of the second bending portion 123 have 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 directions at both ends of the third bending portion 124 have a certain angle.

[0166] The second bend 123 and the third bend 124 can change the flow direction of the heat exchange 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 heat exchange fluid and further improving the heat exchange efficiency of the first heat exchange channel 10.

[0167] In the above embodiment, by setting the second bend portion 123 and the third bend portion 124, the flow direction of the fluid in the first heat exchange channel 10 can be changed, and a smooth transition between the third heat exchange portion 122 and the second heat exchange portion 121 can be achieved, and a smooth transition between the third heat exchange portion 122 and the first heat exchange portion 111 can be achieved. Therefore, the second bend portion 123 and the third bend portion 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 heat exchange fluid, and further increase the heat exchange efficiency of the first heat exchange channel 10.

[0168] According to some embodiments of the present application, as shown in FIG3 , the second bent portion 123 may be in the shape of a quarter circle.

[0169] The second bend 123 can extend along a semicircular arc. Specifically, the first bend 112 can extend along a quarter-circular arc away from the protrusion of 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 pipe materials and can change the flow direction of the fluid, causing the fluid flow direction to change 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.

[0170] The second bent portion 123 connects the second heat exchange portion 121 and the third heat exchange portion 122 . At this time, the second heat exchange portion 121 and the third heat exchange portion 122 are arranged perpendicular to each other.

[0171] In the above embodiment, by setting the second bending portion 123 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 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.

[0172] According to some embodiments of the present application, as shown in FIG3 , the third bending portion 124 is in the shape of a quarter arc.

[0173] The third bend 124 can extend along a semicircular arc. Specifically, the third bend 124 can extend along a quarter-circular arc away from the protrusion of 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 pipe materials. It can change the flow direction of the fluid, causing the fluid flow direction to change 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.

[0174] The third bending portion 124 connects the third heat exchange portion 122 and the first heat exchange portion 111 . At this time, the third heat exchange portion 122 and the first heat exchange portion 111 are arranged perpendicular to each other.

[0175] In the above embodiment, by setting the third bending portion 124 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 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.

[0176] According to some embodiments of the present application, as shown in Figure 6, 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.

[0177] The fifth heat exchange portion 127 can partially close 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 peripheral edge of the battery assembly 200. In this way, the second heat exchange section 12 can exchange heat with all or most of the peripheral edges 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 portion 127 can be set to optimize the heat exchange structure of the first heat exchange channel 10 and improve the heat exchange efficiency.

[0178] In the above embodiment, by providing the fifth heat exchange portion 127, the second heat exchange section 12 can perform heat exchange on the four sides of the battery assembly 200. In this way, the second heat exchange section 12 of a first heat exchange channel 10 can perform heat exchange on the four sides of the battery assembly 200. As a result, the heat exchange effect on the four sides of the battery assembly 200 can be improved, and the temperature uniformity of the battery assembly 200 can be improved.

[0179] According to some embodiments of the present application, as shown in Figure 6, 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.

[0180] 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 6 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 6 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 6 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.

[0181] 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 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 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 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 section 127 and the third heat exchange section 122 is 30°, 45°, 60°, 90°, 120°, 135°, 150°, etc.

[0182] 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.

[0183] 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.

[0184] In the above embodiment, 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.

[0185] In other specific embodiments, as shown in Figure 8, 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.

[0186] 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.

[0187] 9 , the second heat exchange section 121 and the fifth heat exchange section 127 are respectively arranged on both sides of the first heat exchange section 11 in the X1 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 Y1 direction, the fifth heat exchange section 127 extends along the Y1 direction, and the end of the fifth heat exchange section 127 close to the coordinate origin in the Y1 direction is connected to the fourth heat exchange section 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.

[0188] The fifth heat exchange portion 127 and the fourth heat exchange portion 125 may be connected by an arc. For example, the fifth heat exchange portion 127 and the fourth heat exchange portion 125 may be connected by a quarter arc.

[0189] In the above embodiment, 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.

[0190] In the above embodiment, 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 second end of the third heat exchange part 122 and the first heat exchange section 11, or connecting one end of the fifth heat exchange part 127 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 multiple batteries 400.

[0191] According to some embodiments of the present application, as shown in Figures 3 to 7, 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.

[0192] 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 heat exchange 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.

[0193] 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.

[0194] In the above embodiment, 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 .

[0195] According to some embodiments of the present application, as shown in Figures 3 to 7, 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 3); 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.

[0196] The third heat exchange section 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 section 13 is also arranged circumferentially outside the first heat exchange section 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.

[0197] The third heat exchange section 13 and the fourth heat exchange section 125 can be arranged inside and outside the same side of the first heat exchange section 11. This can further increase the heat exchange area at this location and improve heat exchange efficiency. In addition, 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.

[0198] 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, and the multiple first heat exchange parts 111 are connected sequentially in the first direction. 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 performed with the battery assembly 200, in the first heat exchange channel 10, the temperature of the heat exchange fluid in the first heat exchange part 111 closest to the second heat exchange part 121 and the heat exchange fluid in the third heat exchange section 13, as well as the temperature of the heat exchange 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.

[0199] Due to the heat dissipation effect of the battery 400, the edge temperature of the battery 400 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.

[0200] In the above embodiment, 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.

[0201] According to some embodiments of the present application, as shown in Figures 3 to 7, the third heat exchange section 13 extends along the first direction away from the second heat exchange portion 121, and the first heat exchange portion 111 extends along the second direction, and the first direction and the second direction are arranged at an angle.

[0202] One end of 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, and the other end of the third heat exchange part 122 extends toward the first heat exchange part 111 that is 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 that is farthest from the second heat exchange part 121.

[0203] The third heat exchange section 13 is arranged on a side of the first heat exchange section 11 facing 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.

[0204] In the above embodiment, 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 2011 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, and the temperature uniformity at the edge of the battery assembly 200 can be improved.

[0205] According to some embodiments of the present application, as shown in FIG. 3 to FIG. 7 , 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 .

[0206] In the above embodiment, 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.

[0207] According to some embodiments of the present application, as shown in Figures 3 to 7, 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.

[0208] 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 fluid flow direction, thereby causing the third heat exchange section 13 to extend along a predetermined direction. Furthermore, the arc shape reduces fluid flow resistance and pressure drop, thereby increasing the fluid flow rate and further enhancing the heat exchange efficiency of the first heat exchange channel 10.

[0209] In the above embodiment, by setting the fourth bend 14, the flow direction of the fluid between the third heat exchange section 13 and the first heat exchange section 111 can be changed. At the same time, the arc-shaped fourth bend 14 can reduce the flow resistance of the fluid, 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.

[0210] According to some embodiments of the present application, as shown in FIG. 3 to FIG. 7 , the fourth bending portion 14 is in the shape of a quarter circular arc.

[0211] 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 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.

[0212] 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. The first heat exchange section 111 extends along the second direction, and the third heat exchange section 13 extends along the first direction. The first direction is perpendicular to the second direction.

[0213] In the above embodiment, 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.

[0214] According to some embodiments of the present application, as shown in Figures 3-7, 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.

[0215] The first inlet and outlet are used for the inlet or outlet of the heat exchange fluid. When the first inlet and outlet are used for the inlet of the heat exchange fluid, the first inlet and outlet section 15 is used to transport the heat exchange fluid to the third heat exchange section 13; when the first inlet and outlet are used for the outlet of the heat exchange fluid, the first inlet and outlet section 15 is used to guide the heat exchange fluid after heat exchange into the first heat exchange channel 10 through the first inlet and outlet.

[0216] 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.

[0217] In the above embodiment, by setting the first inlet and outlet section 15, the external pipeline can be facilitated so that the heat exchange medium can enter or discharge the first heat exchange channel 10. At the same time, it can also guide the heat exchange fluid entering or discharging the first heat exchange channel 10, so that the heat exchange fluid can quickly enter or discharge, thereby improving the heat exchange rate.

[0218] According to some embodiments of the present application, as shown in FIG. 3 to FIG. 7 , 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.

[0219] A certain angle is formed 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 is beneficial to the layout of other components in the battery 400 .

[0220] In the above embodiment, 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.

[0221] According to some embodiments of the present application, as shown in Figures 3 to 7, 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.

[0222] The fifth bend 16 is arc-shaped, that is, the fifth bend 16 extends along the arc, and the fluid flow directions at both ends of the fifth bend 16 have 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 heat exchange 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 heat exchange fluid and further increasing the heat exchange efficiency of the first heat exchange channel 10.

[0223] In the above embodiment, by setting the fifth bending section, the heat exchange 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 bending portion 16 can also reduce the flow resistance of the fluid and reduce the pressure drop, thereby increasing the flow rate of the heat exchange fluid and further increasing the heat exchange efficiency of the first heat exchange channel 10.

[0224] According to some embodiments of the present application, as shown in FIG. 3 to FIG. 7 , 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°.

[0225] The central angle corresponding to the fifth bending portion 16 may be 90°, 120°, 150° or 170°.

[0226] As shown in Figure 3, 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, while 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°.

[0227] In the above embodiment, 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 400 and improve the rationality of the layout of the battery 400.

[0228] According to some embodiments of the present application, as shown in FIG. 3 to FIG. 7 , 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 .

[0229] The sixth bend 126 is formed in 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 heat exchange fluid, thereby allowing the second heat exchange portion 121 and the fourth heat exchange portion 125 to extend along a predetermined direction. Furthermore, 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 heat exchange fluid and further enhancing the heat exchange efficiency of the first heat exchange channel 10.

[0230] In the above embodiment, by setting the sixth bend 126, the flow direction of the fluid in the first heat exchange channel 10 can be changed, and the circuitous arrangement of the first heat exchange channel 10 can be realized, 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; at the same time, the sixth bend 126 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 heat exchange fluid and further increasing the heat exchange efficiency of the first heat exchange channel 10.

[0231] According to some embodiments of the present application, as shown in FIG. 3 to FIG. 7 , the sixth bending portion 126 is in the shape of a quarter arc.

[0232] The sixth bend 126 can extend along a semicircular arc. Specifically, the sixth bend 126 can extend along a quarter-circular arc that is convex 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 and can change the direction of the flow path. After the fluid passes through the sixth bend 126, the flow direction of the fluid changes by 90°. 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.

[0233] The sixth bent portion 126 connects the second heat exchange portion 121 and the fourth heat exchange portion 125 . At this time, the second heat exchange portion 121 and the fourth heat exchange portion 125 are arranged vertically.

[0234] In the above embodiment, 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.

[0235] According to some embodiments of the present application, as shown in Figures 3-7, 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.

[0236] The second inlet and outlet are used for the inlet and outlet of the heat exchange fluid. When the second inlet and outlet are used for the inlet of the heat exchange fluid, the second inlet and outlet section 17 is used to transport the heat exchange fluid to the third heat exchange section 13. When the second inlet and outlet are used for the outlet of the heat exchange fluid, the second inlet and outlet section 17 is used to guide the heat exchange fluid after heat exchange into the first heat exchange channel 10 through the second inlet and outlet.

[0237] 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.

[0238] In the above embodiment, by setting the second inlet and outlet section 17, it is beneficial to the external pipeline so that the heat exchange medium can enter or discharge the first heat exchange channel 10 to complete the heat exchange of the battery cell 2011. At the same time, it can also guide the heat exchange fluid entering or discharging the first heat exchange channel 10, so that the heat exchange fluid can quickly enter or discharge, thereby improving the heat exchange rate.

[0239] According to some embodiments of the present application, as shown in Figures 3 to 7, 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 4).

[0240] 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 400 (such as high-voltage boxes and other structures).

[0241] 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.

[0242] According to some embodiments of the present application, as shown in Figures 3 to 7, the first heat exchange channel 10 further includes: a seventh bend 18, which is arc-shaped and bends and connects between the fourth heat exchange part 125 and the second inlet and outlet section 17.

[0243] 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, so that the fourth heat exchange part 125 and the second inlet and outlet section 17 can be connected, so that the heat exchange 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 can also reduce the flow resistance of the fluid and reduce the pressure drop, thereby increasing the flow rate of the heat exchange fluid and further increasing the heat exchange efficiency of the first heat exchange channel 10.

[0244] In the above embodiment, by providing the seventh bend 18, the heat exchange 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 liquid 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 heat exchange fluid and further increasing the heat exchange efficiency of the first heat exchange channel 10.

[0245] According to some embodiments of the present application, as shown in FIG. 3 to FIG. 7 , 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°.

[0246] The central angle corresponding to the seventh bending portion 18 can be 90°, 120°, 150° or 170°.

[0247] As shown in FIG3 , 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 entrance and exit section 17. Simultaneously, the second entrance and exit 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 connects 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, while the fourth extension section extends along a straight line parallel to the second direction. The third extension section and the fourth heat exchange portion 125 are connected by 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°.

[0248] In the above embodiment, 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 400 and improve the rationality of the layout of the battery 400.

[0249] According to some embodiments of the present application, the first heat exchange section 11 is connected downstream of the second heat exchange section 12 along the fluid flow direction.

[0250] The heat exchange fluid first flows through the second heat exchange section 12 and then flows into the first heat exchange section 11. 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 quickly, especially under low-temperature heating conditions. The high-temperature heat exchange 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 400.

[0251] In the above embodiment, 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 400, which is beneficial to improving the temperature difference of the battery 400 in different environments and increasing the service life of the battery 400 to a certain extent.

[0252] According to some embodiments of the present application, the heat exchange element 100 is configured as follows: when heating the battery assembly 200 of the battery 400, 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 400, the first heat exchange section 11 is connected to the upstream of the second heat exchange section 12 along the fluid flow direction.

[0253] Specifically, when heating the battery assembly 200 of the battery 400, the temperature of the heat exchange fluid flowing in the heat exchange element 100 is higher than the operating temperature of the battery 400. The heat exchange element 100 heats the battery assembly 200, and the high-temperature heat exchange fluid first flows into the second heat exchange section 12 and then flows to the first heat exchange section 11. The temperature of the heat exchange fluid flowing inside the second heat exchange section 12 is higher than the temperature of the heat exchange fluid inside the first heat exchange section 11.

[0254] 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 2011 outside the battery assembly 200, and then cool the battery cells 2011 in the middle of the battery assembly 200 after the heat exchange fluid enters the first heat exchange section 11. Since the battery cells 2011 at the periphery of the battery 400 dissipate more heat to the external environment, the temperature of the battery cells 2011 at the periphery of the battery 400 drops more. The heat exchange fluid first heats the battery cells 2011 at the periphery of the battery 400. The higher temperature heat exchange fluid can increase the temperature of the battery cells 2011 at the periphery while compensating for the heat lost by the battery cells 2011 due to heat dissipation to the external environment, thereby meeting their heating needs. The battery cells 2011 at the middle position of the battery assembly 200 have less contact area with the external environment and less heat loss. The lower temperature heat exchange fluid flowing in the first heat exchange section 11 can cooperate with the heat generated by the battery cells 2011 themselves to well meet their heating needs. As a result, the heating effects obtained by the battery cells 2011 at the periphery of the battery assembly 200 and the battery cells 2011 at the middle position of the battery assembly 200 are basically the same, thereby making the temperatures of the battery cells 2011 at the periphery of the battery assembly 200 and the battery cells 2011 at the middle position of the battery assembly 200 more consistent after heating, making the temperature distribution inside the battery 400 more uniform.

[0255] When cooling the battery assembly 200 of the battery 400, the temperature of the heat exchange fluid flowing in the heat exchange element 100 is lower than the operating temperature of the battery 400. The heat exchange element 100 is used to cool the battery 400. The heat exchange fluid flows from the first heat exchange section 11 to the second heat exchange section 12. The temperature of the heat exchange fluid flowing in the first heat exchange section 11 is lower than the temperature of the heat exchange fluid inside the second heat exchange section 12.

[0256] When cooling the battery 400 , the heat exchange fluid flows from the first heat exchange section 11 to the second heat exchange section 12 , that is, the heat exchange fluid flows from the middle of the battery assembly 200 to the edge of the battery assembly 200 and exchanges heat. Since the heat dissipation of the battery cells 2011 at the periphery of the battery 400 is better than that of the internal battery cells 2011, the lower temperature heat exchange fluid of the first heat exchange section 11 can better meet the heat dissipation requirements of the battery cells 2011 at the middle of the battery 400. At the same time, since the battery cells 2011 at the periphery of the battery assembly 200 can directly dissipate heat naturally toward the external environment, even if the temperature of the heat exchange fluid of the second heat exchange section 12 is slightly higher, it can still meet the heat dissipation requirements of the peripheral battery cells 2011, so that the cooling effects obtained by the battery cells 2011 at the periphery of the battery 400 and the battery cells 2011 at the middle of the battery 400 are roughly the same, and thus the temperatures of the battery cells 2011 at the periphery of the battery 400 and the battery cells 2011 at the middle of the battery 400 are relatively consistent after cooling and heat dissipation, reducing the temperature difference between the inside and outside of the battery assembly 200, and making the temperature distribution inside the battery 400 more uniform.

[0257] In the above embodiment, the heat exchange element 100 is configured as follows: when heating the battery assembly 200 of the battery 400, 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 400, 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 400 and improve the temperature uniformity of the battery assembly 200.

[0258] According to some embodiments of the present application, as shown in Figures 3 to 9, 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.

[0259] 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.

[0260] In some specific embodiments, a plurality of heat exchange channels are arranged at intervals along the first direction. For example, as shown in FIG3 , a heat exchange element 100 may include two heat exchange channels, wherein 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, wherein 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, wherein the second heat exchange channel 30 is arranged between the two first heat exchange channels 10.

[0261] 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 FIG10 , 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.

[0262] 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.

[0263] 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 400, thereby improving the market competitiveness of the battery 400; 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.

[0264] According to some embodiments of the present application, as shown in Figure 3, 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, and the second direction is set at an angle to the first direction.

[0265] 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 2011 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.

[0266] 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.

[0267] “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°.

[0268] In the above embodiment, 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 the heat exchange channel is reduced, thereby improving the heat exchange efficiency.

[0269] According to some embodiments of the present application, as shown in FIG. 3 , the plurality of heat exchange channels are symmetrically arranged about the center line of the heat exchange element 100 along the second direction.

[0270] 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.

[0271] In the above embodiment, 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.

[0272] 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.

[0273] According to some embodiments of the present application, as shown in Figure 8, 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, and 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.

[0274] 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. The temperature of the battery unit 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 400.

[0275] The number of the second heat exchange channels 30 can be one or more. For example, the number of the second heat exchange channels 30 can be one, two, three or more. The number of the second heat exchange channels 30 can be selected according to the arrangement of the battery components 200.

[0276] 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.

[0277] According to some embodiments of the present application, as shown in Figure 7, the second heat exchange channel 30 includes a plurality of fourth heat exchange segments 31, the plurality of fourth heat exchange segments 31 are connected sequentially along the fluid flow direction, the fourth heat exchange segments 31 extend along the second direction, and the plurality of fourth heat exchange segments 31 are arranged at intervals in the first direction.

[0278] 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.

[0279] The number of the fourth heat exchange sections 31 can be two, three or more, and the number of the fourth heat exchange sections 31 can be designed according to the size of the battery assembly 200 .

[0280] In the above embodiment, 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 the production cost of the second heat exchange channel 30 can be reduced, thereby reducing the production cost of the heat exchange component 100.

[0281] 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.

[0282] The bending structures of the first heat exchange channel 10 and the third heat exchange channel 40 may be the same or different. The number of the third heat exchange channel 40 may be one or more, for example, the number of the third heat exchange channel 40 may be one, two, three or more.

[0283] 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.

[0284] 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 structure with an opening facing the side 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.

[0285] 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 closer 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 closer 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.

[0286] 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. 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.

[0287] In the above embodiment, 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 400, thereby further increasing the heat exchange effect of the heat exchange component 100 and improving the temperature uniformity of the battery 400.

[0288] According to some embodiments of the present application, as shown in Figure 9, 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 9 is arranged in the U-shaped area 120 of the third heat exchange channel 40.

[0289] The first heat exchange channel 10 may have only a portion of the first heat exchange segments 11 disposed in the U-shaped region 120 of the third heat exchange channel 40 , or may have the entire first heat exchange segment 11 disposed in the U-shaped region 120 of the third heat exchange channel 40 .

[0290] For example, as shown in FIG9 , 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 .

[0291] 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 bent and connected in sequence to form a U-shaped structure with its opening facing the 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 in the U-shaped region 120. The plurality of first heat exchange portions 111 extend linearly along the X1 direction and are arranged at intervals along the Y1 direction and bent and connected in sequence. 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.

[0292] 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. 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.

[0293] The third heat exchange portion 122 of the third heat exchange channel 40a is located on the side of the multiple first heat exchange portions 111 farthest from the coordinate origin in the Y1 direction and is connected to the first heat exchange portion 111 farthest from the coordinate origin in the Y1 direction. The third heat exchange portion 122 of the third heat exchange channel 40a and the first heat exchange portion 111 of the third heat exchange channel 40a 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 multiple first heat exchange portions 111 of the first heat exchange channel 10. The multiple 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 40a farthest from the coordinate origin in the Y1 direction and the second first heat exchange portion 111 of the third heat exchange channel 40a on the side farthest from the coordinate origin in the Y1 direction.

[0294] The third heat exchange channel 40b is located between the fourth heat exchange part 125 of the third heat exchange channel 40a and the multiple first heat exchange parts 111 of the third heat exchange channel 40a, and the fourth heat exchange part 125 of the third heat exchange channel 40b is located on the side of the multiple first heat exchange parts 111 of the third heat exchange channel 40b away from the coordinate origin in the Y1 direction, and the third heat exchange part 122 of the third heat exchange channel 40b 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.

[0295] 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 connected to the fourth heat exchange part 125 and the first heat exchange part 111 respectively.

[0296] In the above embodiment, 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 400.

[0297] According to some embodiments of the present application, as shown in FIG. 8-FIG . 9 , 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 .

[0298] 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 component 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.

[0299] In the above embodiment, 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 400, which is beneficial to improving the temperature difference of the battery 400 in different environments and increasing the service life of the battery 400 to a certain extent.

[0300] According to some embodiments of the present application, the heat exchange element 100 includes at least one heat exchange tube. When there are multiple heat exchange tubes, the multiple heat exchange tubes are arranged at intervals along the first direction, and a heat exchange channel is defined on the inner side of each heat exchange tube.

[0301] The number of heat exchange tubes can be one, two, three or more, and the number of heat exchange tubes can be designed according to the size of the battery assembly 200.

[0302] Heat exchange channels are defined within the heat exchange tubes for the circulation of heat exchange fluids. Heat exchange tubes can have various shapes, such as circular tubes and flat tubes. Furthermore, the heat exchange channels defined within the heat exchange tubes can also have various shapes, such as U-shaped channels and meandering channels.

[0303] The plurality of heat exchange tubes are arranged in parallel. For example, the inlet ends of the plurality of heat exchange tubes are connected to the flow diversion cavity of the collector 20 , and the outlet ends of the plurality of heat exchange tubes are all connected to the flow confluence cavity of the collector 20 .

[0304] The multiple heat exchange tubes can be arranged in sequence along the first direction, for example, the multiple heat exchange tubes can be arranged at intervals along the Y1 direction. Of course, the multiple heat exchange tubes can also be arranged around each other, and further, the multiple heat exchange tubes can be arranged around each other in the same plane.

[0305] In the above-described embodiment, by configuring the heat exchange element 100 to include at least one heat exchange tube, not only can the process complexity of the heat exchange element 100 be reduced, thereby increasing the production rate of the heat exchange element 100, but the fluid pressure drop within a single heat exchange tube can also be reduced, thereby improving heat exchange efficiency. Furthermore, compared to a plate-like structure, a tubular structure is simpler, less expensive, and easier to manufacture.

[0306] According to some embodiments of the present application, the heat exchange tube can be formed by bending a single tube.

[0307] Single tube bending means that a heat exchange tube can be formed by bending a single straight tube multiple times through a process such as pressing and rolling. For example, a single straight tube can be bent at multiple preset locations to form a V-shape, U-shape, or other shape. The bending shape of a single tube can be designed based on actual conditions.

[0308] In the above embodiment, by setting the heat exchange tube to be formed by bending a single tube, the number of welding points of the heat exchange element 100 can be reduced, thereby reducing the risk of leakage of the heat exchange element 100 and improving the reliability of the use of the heat exchange element 100; at the same time, the operation process of bending a single tube is simpler than the manufacturing process of the plate structure, thereby significantly reducing the cost of the heat exchange element 100.

[0309] According to some embodiments of the present application, the heat exchange tube is bent in an arc shape at the bending position.

[0310] 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 bend position can increase the flow rate of the heat exchange fluid in the heat exchange flow channel, thereby increasing the heat exchange efficiency of the heat exchange element 100.

[0311] In the above embodiment, by setting the heat exchange tube to bend 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.

[0312] According to some embodiments of the present application, the bending angle of the heat exchange tube at the bending position is less than 180°.

[0313] The bending angle of the heat exchange tube at the bending position can be 30°, 60°, 90°, 120°, 150° or 179°.

[0314] In the above embodiment, by setting the bending angle of the heat exchange tube at the bending position to be less than 180°, the probability of the heat exchange tube being damaged by bending can be reduced.

[0315] As shown in FIG3 and FIG4 , the width of the heat exchange tube is L1, the distance between adjacent tube sections in the same heat exchange tube and the distance between adjacent tube sections of adjacent heat exchange tubes are both L2, and both satisfy: L1≤L2≤2L1.

[0316] There can be multiple heat exchange tubes, and the multiple heat exchange tubes can be arranged at intervals in the first direction, and each heat exchange tube can have at least one tube segment (such as: a partial tube segment that defines the first heat exchange segment 11, a partial tube segment that defines the second heat exchange segment 12, etc.). The distance between adjacent tube segments in the same heat exchange tube is the same as the distance between adjacent tube segments of adjacent heat exchange tubes (such as: there are two heat exchange tubes, namely the first heat exchange tube and the second heat exchange tube, then a certain tube segment of the first heat exchange tube on one side of the first direction is adjacent to a certain tube segment of the second heat exchange tube on the same side of the first direction) and is both L2. This can make the multiple tube segments more evenly arranged in the first direction, improve the heat exchange uniformity, and make the temperature adjustment more consistent.

[0317] Make the width of the heat exchange tube and L2 meet the above ratio. When laying the heat exchange tube, the distance between adjacent tube sections is greater than the width of the heat exchange tube itself. This can reduce the probability of interference between adjacent heat exchange tubes, reduce the difficulty of laying, improve assembly efficiency, and make the distance between adjacent tube sections more reasonable, so as to further improve the uniformity and consistency of temperature regulation.

[0318] The distance between adjacent heat exchange tubes shall not be less than 2mm.

[0319] The distance between adjacent heat exchange tubes is 2mm, 3mm, etc., which makes the distance between adjacent heat exchange tubes more reasonable, improves the uniformity and consistency of temperature regulation, and at the same time makes adjacent heat exchange tubes have at least 2mm gap, which can further reduce the difficulty of laying the heat exchange tubes.

[0320] As shown in Figures 3 and 4, the support plate 320 defines a heat exchange surface perpendicular to the frame 310. The area of ​​the heat exchange surface is S1, and the projected coverage area of ​​the heat exchange element 100 on the heat exchange surface is S2, and both satisfy 0.3≤S1 / S2≤0.8.

[0321] The ratio between the heat exchange surface defined by the support plate 320 and the projected coverage area of ​​the heat exchange element 100 on the heat exchange surface is 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, etc. The coverage area of ​​the heat exchange element 100 on the heat exchange surface satisfies the above-mentioned proportional relationship, so that the proportional relationship is not less than 0.3, which can improve the heat exchange efficiency and heat exchange effect of the support plate 320, and the proportional relationship is not greater than 0.8, which can reduce the number of heating elements and the laying area, and can take into account the structural strength and rigidity of the support plate 320.

[0322] 0.3≤S1 / S2≤0.6, which can further take into account the structural strength, structural rigidity, heat exchange efficiency and heat exchange effect of the support plate 320.

[0323] The heat exchange element 100 is constructed as a flat tube with a width-to-thickness ratio of 1:1 to 40:1. This increases the area of ​​the heat exchange element 100 within the plane defined by the first and second directions, thereby improving the heat exchange effect and efficiency.

[0324] The width-to-thickness ratio is 4:1 to 8:1. This allows for a balanced heat exchange effect and efficiency while preventing an excessively large width-to-thickness ratio. This improves the space occupied by the heat exchange element 100 in the third direction and further reduces the thickness of the support plate 320. Furthermore, an excessively small width-to-thickness ratio is prevented, maintaining the flow resistance of the heat exchange element 100 within a reasonable range. Excessive flow resistance is avoided, maintaining a stable flow rate of the heat exchange medium within the heat exchange element 100 and maintaining a stable heat exchange effect.

[0325] As shown in FIG. 19 , according to some embodiments of the present application, the buffer layer 322 is configured as a porous structure.

[0326] The porous structure can be a honeycomb hole structure, a circular hole structure, or a square hole structure, and can be densely laid within the plane defined by the first direction and the second direction. By setting a porous structure, not only can the weight of the buffer layer 322 be reduced to improve the load of the support plate 320, and the contour of the bottom surface of the support plate 320 be improved, but the structural strength and rigidity of the support plate 320 can also be further increased.

[0327] According to some embodiments of the present application, the holes on the buffer layer 322 extend in opposite directions of adjacent structural plates 321 .

[0328] The hole structure of the buffer layer 322 extends in the up and down directions so that the buffer layer 322 can provide support for the upper structural plate 321 between adjacent structural plates 321, and realize smooth and uniform mechanical transmission between the upper structural plate 321 and the lower structural plate 321, so as to further improve the structural strength and stiffness of the support plate 320.

[0329] According to some embodiments of the present application, the buffer layer 322 is constructed as a plastic material piece or a metal material piece; when the buffer layer 322 is constructed as a plastic material piece, the buffer layer 322 is hot-melt pressed to the structural plate 321; when the buffer layer 322 is constructed as a metal material piece, the buffer layer 322 is brazed to the structural plate 321.

[0330] The structural plate 321 can be made of a stamped aluminum plate, and the heat exchanger 100 is welded to the uppermost structural plate 321 (e.g., brazing). A buffer layer 322 is set between adjacent structural plates 321. If the buffer layer 322 is a plastic material, hot-melt pressing is used for assembly. If the buffer layer 322 is a metal material, brazing is used to connect the buffer layer 322 and the structural plate 321, so that the connection stability between the buffer layer 322 and the structural plate 321 is higher and the overall structural strength of the support plate 320 is higher.

[0331] The heat exchanger 100 can be constructed as a heat exchange tube structure rather than a plate structure, which means that there is no need to set up a heat exchange plate with a double-layer stamped plate structure. The material usage of the heat exchanger 100 can be reduced to reduce material costs and process difficulty. At the same time, the weight and load of the support plate 320 can be reduced to further improve the contour of the support plate 320 and improve the flatness of the bottom surface of the support plate 320.

[0332] As shown in Figures 20 and 21, according to some embodiments of the present application, the structural plate 321 includes: a first structural plate 3211 to an Nth structural plate 3212 arranged in sequence in the arrangement direction of the frame 310 and the support plate 320, N≥2, and at least the first structural plate 3211 and the Nth structural plate 3212 are connected to the frame 310.

[0333] In some embodiments, the structural plate 321 includes a first structural plate 3211 and a second structural plate 321, a buffer layer 322 is arranged between the first structural plate 3211 and the second structural plate 321, and a heating element is arranged on the lower surface of the first structural plate 3211; in other embodiments, the structural plate 321 may include a first structural plate 3211, a second structural plate 321 and a third structural plate 321, a buffer layer 322 is arranged between the first structural plate 3211 and the second structural plate 321 and between the second structural plate 321 and the third structural plate 321, and a heating element is arranged on the lower surface of the first structural plate 3211.

[0334] By setting up multiple structural plates 321 and connecting at least the first structural plate 3211 and the Nth structural plate 3212 to the frame 310, not only can the structural strength and structural rigidity of the support plate 320 be further improved, but also the connection stability and reliability between the support plate 320 and the frame 310 can be made higher.

[0335] In combination with Figures 16, 20 and 21, according to some embodiments of the present application, a connecting flange 311 is provided on the side of the frame 310 facing the support plate 320, the structural dimensions of the buffer layer 322 are smaller than the structural dimensions of the structural plate 321 to define a slot, and the connecting flange 311 extends into the slot; or the connecting flange 311 is overlapped on the first structural plate 3211.

[0336] In some embodiments, slots are defined between adjacent structural plates 321 , and the connecting flange 311 can be inserted into the slots and connected to the structural plates 321 in the slots, or the connecting flange 311 is directly overlapped on the upper surface of the structural plate 321 and connected to the structural plate 321 .

[0337] In this way, the connection between the structural plate 321 and the frame 310 can be achieved, and through the setting of the connecting flange 311, the frame 310 and the support plate 320 have at least partial overlapping margin to achieve connection and fixation, and the connection stability and reliability of the structural plate 321 and the frame 310 can also be improved. At the same time, based on the overlapping relationship or the plug-in relationship, only one sealing interface or two sealing interfaces need to be formed. Compared with the prior art, the number of sealing interfaces can be less, the sealing cost is lower, and the sealing effect is better.

[0338] According to some embodiments of the present application, the minimum overlapping dimension w1 between the structural plate 321 and the connecting flange 311 is 6 mm.

[0339] The overlapping dimensions of the edges on both sides of the structural plate 321 and the connecting flange 311 in the first direction are not less than 6 mm, and the overlapping dimensions of the edges on both sides of the structural plate 321 and the connecting flange 311 in the second direction are also not less than 6 mm, so that the area of ​​the connection area between the connecting flange 311 and the structural plate 321 is larger, which improves the connection strength, reduces the welding difficulty, and increases the processing efficiency.

[0340] According to some embodiments of the present application, the structural dimensions of the first structural plate 3211 are smaller than the structural dimensions of the Nth structural plate 3212, and the first structural plate 3211 is connected to the connecting flange 311, and the Nth structural plate 3212 is connected to the end face of the frame 310; or the structural dimensions of the first structural plate 3211 are equal to the structural dimensions of the Nth structural plate 3212, and both the first structural plate 3211 and the Nth structural plate 3212 are connected to the connecting flange 311.

[0341] As shown in Figure 21, in an embodiment in which the structural dimensions of the first structural plate 3211 are smaller than the structural dimensions of the Nth structural plate 3212, and the first structural plate 3211 is connected to the connecting flange 311, and the Nth structural plate 3212 is connected to the end face of the frame 310, the first structural plate 3211 and the connecting flange 311 are connected by the FSW process, and the Nth structural plate 3212 is connected to the end face of the frame 310 by the FDS process; as shown in Figure 20, in an embodiment in which the structural dimensions of the first structural plate 3211 are equal to the structural dimensions of the Nth structural plate 3212, and both the first structural plate 3211 and the Nth structural plate 3212 are connected to the connecting flange 311, the first structural plate 3211 and the connecting flange 311, and the Nth structural plate 3212 and the connecting flange 311 are both connected by the FSW process.

[0342] The FSW process refers to the friction stir welding process, and the FDW process refers to the hot melt self-tapping process. In the embodiment in which the first structural plate 3211 and the second structural plate 321 are both connected by friction stir welding, two sealing interfaces are formed between the first structural plate 3211 and the connecting flange 311, and between the second structural plate 321 and the connecting flange 311. In the embodiment in which the second structural plate 321 is connected by the hot melt self-tapping process, three sealing interfaces are formed between the first structural plate 3211 and the connecting flange 311, between the second structural plate 321 and the connecting flange 311, and between the self-tapping screws and the frame. The number of sealing interfaces is lower than that of the existing technology, which can reduce the sealing interface and reduce the sealing cost. In addition, both have high connection stability and reliability, which can improve the structural strength and stability of the box 300.

[0343] The present application provides a battery 400 , comprising: the box body 300 in the above embodiment.

[0344] According to some embodiments of the present application, as shown in Figures 10 to 15, the battery 400 specifically includes: a battery assembly 200, the battery assembly 200 includes a battery cell 201, the battery cell 201 includes a plurality of battery cells 2011 stacked in sequence along a third direction (for example, the X2 direction shown in Figures 10 to 15); the heat exchange element 100 is arranged on one side of the battery assembly 200 in a fourth direction (for example, the Z direction shown in Figure 2) and exchanges heat with the battery assembly 200; the third direction and the fourth direction are arranged at an angle.

[0345] Battery assembly 200 is primarily used to store and release energy and is the core component of battery 400. Heat exchanger 100 is used to exchange heat with battery assembly 200, keeping the temperature of battery assembly 200 within a safe operating range, thereby improving the reliability and service life of battery assembly 200.

[0346] Furthermore, the phrase "the third direction and the fourth direction are arranged at an angle" is intended to indicate that the third and fourth directions can be arranged perpendicularly. For example, as shown in Figure 2 , the third direction can be the thickness direction of the battery cell 2011, i.e., the X2 direction shown in Figure 2 , and the fourth direction can be the height direction of the battery cell 2011, i.e., the Z direction shown in Figure 2 . Thus, multiple battery cells 2011 are stacked along the thickness direction of the battery cells 2011 to form the battery unit 201, and the heat exchange element 100 is arranged on one side of the battery assembly 200 in the height direction to exchange heat with the battery assembly 200. The third and fourth directions can also be arranged so as to intersect in a non-perpendicular manner. For example, the third and fourth directions can be arranged at an angle of 30°, 60°, or 80°.

[0347] The number of battery cells 201 may be one or more. For example, the number of battery cells 201 may be one, two, three or more.

[0348] In the above embodiment, by arranging the heat exchange element 100 on one side of the battery assembly 200 in the fourth direction and exchanging heat with the battery assembly 200, the temperature of the battery assembly 200 can be kept within the safe operating temperature, thereby improving the reliability and service life of the battery assembly 200.

[0349] According to some embodiments of the present application, as shown in FIG3 and FIG10 , a plurality of battery cells 2011 located at the outermost circumference of the battery assembly 200 form a peripheral battery cell group, and at least a portion of the second heat exchange section 12 is in contact with the peripheral battery cell group.

[0350] The second heat exchange section 12 can be at least partially or entirely bonded to the surrounding battery cell groups. Because the periphery of the battery assembly 200 dissipates more heat to the environment, the temperature of the surrounding battery cell groups is lower than that of the inner battery cells, while the temperature of the heat exchange fluid within the second heat exchange section 12 is always the highest. Therefore, at least partially bonding the second heat exchange section 12 to the surrounding battery cell groups can improve the heat exchange efficiency of the surrounding battery cell groups, thereby further balancing the temperature differences caused by heat dissipation within the battery assembly 200.

[0351] In the above embodiment, by arranging at least a portion of the second heat exchange section 12 to be in contact with the peripheral battery cell group, the heat exchange efficiency of the peripheral battery cell group can be improved, thereby further balancing the temperature difference of the battery assembly 200 caused by heat dissipation.

[0352] According to some embodiments of the present application, as shown in Figures 6 and 11, the battery assembly 200 includes a battery cell 201, and all battery cells 2011 of the battery cell 201 together form a peripheral battery cell, or the battery assembly 200 includes multiple battery cells 201, and the multiple battery cells 201 are arranged in sequence along the fifth direction (for example, the Y2 direction shown in Figure 11), and the multiple battery cells 201 located at the outermost periphery of the battery assembly 200 together form a peripheral battery cell, and the third direction, the fourth direction and the fifth direction are arranged at angles to each other.

[0353] The number of battery cells 201 included in the battery assembly 200 can be designed according to actual conditions. The number of battery cells 201 can be one or more. For example, the number of battery cells 201 can be one, two, three or more.

[0354] When the battery assembly 200 includes a battery unit 201, all the battery cells 2011 of the battery unit 201 together form a peripheral battery cell. At this time, the entire second heat exchange section 12 and the first heat exchange section 11 exchange heat with the peripheral battery cell. Specifically, the second heat exchange section 12 exchanges heat with the periphery of the peripheral battery cell, and the first heat exchange section 11 exchanges heat with the middle position of the peripheral battery cell.

[0355] When the battery assembly 200 includes multiple battery cells 201, the multiple battery cells 201 located at the outermost periphery of the battery assembly 200 together form a peripheral battery cell, thereby limiting the heat exchange position of the second heat exchange section 12, which is beneficial to the layout of the heat exchange flow channel.

[0356] In the above embodiment, by setting the battery assembly 200 to include a battery unit 201, all the battery cells 2011 of the battery unit 201 together form a peripheral battery cell. At this time, all of the second heat exchange section 12 and the first heat exchange section 11 exchange heat with the peripheral battery cell. Therefore, the specific structure and layout of the second heat exchange section 12 and the first heat exchange section 11 are not restricted, and the layout complexity of the first heat exchange channel 10 can be reduced; by setting multiple battery cells 201 and multiple battery cells 2011 located at the outermost periphery of the battery assembly 200 to form a peripheral battery cell together, the heat exchange position of the second heat exchange section 12 can be limited, which is beneficial to the layout of the heat exchange channel.

[0357] In the above embodiment, multiple battery cells 201 are arranged at the outermost periphery of the battery assembly 200 to form peripheral battery cells. This can limit the heat exchange position of the second heat exchange section 12, thereby facilitating the layout of the heat exchange flow channel.

[0358] Please refer to Figures 3 and 10 again. The peripheral battery cell group includes a first group of battery cells 202, a second group of battery cells 203 and a third group of battery cells 204 that are arranged adjacent to each other. The multiple battery cells 2011 included in the first group of battery cells 202 are stacked along the third direction, the multiple battery cells 2011 included in the second group of battery cells 203 are stacked along the fifth direction, and the multiple battery cells 2011 included in the third group of battery cells 204 are stacked along the fifth direction.

[0359] For example, as shown in FIG10 , the third direction may be the thickness direction of the battery cell 2011, i.e., the X2 direction shown in FIG10 , and the fifth direction may be the length direction of the battery cell 2011, i.e., the Y2 direction shown in FIG10 . Thus, the plurality of battery cells 2011 included in the first group of battery cells 202 are stacked along the thickness direction of the battery cell 2011, the plurality of battery cells 2011 included in the second group of battery cells 203 are stacked along the length direction of the battery cell 2011, and the plurality of battery cells 2011 included in the third group of battery cells 204 are stacked along the length direction of the battery cell 2011. As shown in FIG10 , the first group of battery cells 202 is arranged at one of the two ends of the battery assembly 200 in the Y2 direction; the second group of battery cells 203 and the third group of battery cells 204 are respectively arranged at the two ends of the battery assembly 200 in the X1 direction.

[0360] The second heat exchange section 12 includes a second heat exchange part 121, a third heat exchange part 122 and a fourth heat exchange part 125 connected to each other; the second heat exchange part 121 extends and fits to the first group of battery cells 202 to enable heat exchange, and / or, the third heat exchange part 122 extends and fits to the second group of battery cells 203 to enable heat exchange, and / or, the fourth heat exchange part 125 extends and fits to the third group of battery cells 204 to enable heat exchange.

[0361] When the second heat exchange section 12 is in contact with the peripheral battery monomer for heat exchange, only one of the second heat exchange part 121, the third heat exchange part 122 or the fourth heat exchange part 125 can be in contact with the peripheral battery monomer, such as the second heat exchange part 121 is in contact with the first group of battery monomers 202 for heat exchange, or the third heat exchange part 122 is in contact with the second group of battery monomers 203 for heat exchange, or the fourth heat exchange part 125 is in contact with the third group of battery monomers 204 for heat exchange; or two of the second heat exchange part 121, the third heat exchange part 122 or the fourth heat exchange part 125 can be in contact with the peripheral battery monomer, such as the second heat exchange part 121 is in contact with the first group of battery monomers 202 for heat exchange, and the third heat exchange part 122 is in contact with the second group of battery monomers The battery cells 203 are fitted for heat exchange, or the second heat exchange part 121 is fitted for heat exchange with the first group of battery cells 202, and the fourth heat exchange part 125 is fitted for heat exchange with the third group of battery cells 204, or the third heat exchange part 122 is fitted for heat exchange with the second group of battery cells 203, and the fourth heat exchange part 125 is fitted for heat exchange with the third group of battery cells 204; the second heat exchange part 121, the third heat exchange part 122 and the fourth heat exchange part 125 can also be fitted for heat exchange with the peripheral battery cells, such as the second heat exchange part 121 is fitted for heat exchange with the first group of battery cells 202, the third heat exchange part 122 is fitted for heat exchange with the second group of battery cells 203, and the fourth heat exchange part 125 is fitted for heat exchange with the third group of battery cells 204.

[0362] In the above embodiment, since the first group of battery cells 202, the second group of battery cells 203 and the third group of battery cells 204 are all peripheral battery cell groups, the peripheral battery cell groups are arranged at the outermost periphery of the battery assembly 200, closest to the side wall of the battery case 300, have more heat exchange with the environment, and have a lower temperature than the battery cells at other positions. Furthermore, by setting at least one of the second heat exchange part 121, the third heat exchange part 122 and the fourth heat exchange part 125 to be in contact with the peripheral battery cells for heat exchange, the heat exchange component 100 can stably and reliably cool or heat the peripheral battery cell group, so that the battery assembly 200 can have a good heat exchange effect, and the temperature distribution inside the battery assembly 200 is more uniform, thereby making the battery 400 operate more stably.

[0363] According to some embodiments of the present application, as shown in Figure 12, the peripheral battery cells also include a fourth group of battery cells 205, and the plurality of battery cells 2011 included in the fourth group of battery cells 205 are arranged along the third direction. The second heat exchange section 12 also includes a fifth heat exchange part 127, and the fifth heat exchange part 127 closes at least part of the opening of the U-shaped area 120 formed by the second heat exchange part 121, the third heat exchange part 122 and the fourth heat exchange part 125. The fifth heat exchange part 127 extends and fits the fourth group of battery cells 205 to enable heat exchange.

[0364] In the above embodiment, the peripheral battery cell group further includes a fourth group of battery cells 205. The fourth group of battery cells 205 can be arranged opposite the first group of battery cells 202 in the fifth direction. The fourth group of battery cells 205 is disposed on a side of the battery assembly 200 proximate to the sidewall of the battery 400. For example, the fourth group of battery cells 205 and the first group of battery cells 202 can be respectively disposed at opposite ends of Y2 of the battery assembly 200. The fifth heat exchange portion 127 of the second heat exchange section 12 is in contact with the fourth group of battery cells 205. When the heat exchange fluid flows along the second heat exchange section 12, the heat exchange fluid exchanges heat with the fourth group of battery cells along the fifth heat exchange portion 127.

[0365] When the heat exchange element 100 exchanges heat with the battery assembly 200, the heat exchange fluid may first enter the second heat exchange section 12. Within the second heat exchange section 12, the heat exchange fluid first flows into the fourth heat exchange portion 125, flows along the fifth direction within the fourth heat exchange portion 125, and exchanges heat with the third group of battery cells 204. The heat exchange fluid then enters the second heat exchange portion 121, flows along the third direction within the second heat exchange portion 121, and exchanges heat with the first group of battery cells 202. The heat exchange fluid then enters the third heat exchange portion 122, flows along the fifth direction within the third heat exchange portion 122, and exchanges heat with the second group of battery cells 203. The heat exchange fluid then enters the fifth heat exchange portion 127, flows along the third direction, and exchanges heat with the fourth group of battery cells 205. Finally, the heat exchange fluid flows into the first heat exchange section 11 to exchange heat with the battery cells 2011 located inside the peripheral battery cell group in the battery assembly 200. Of course, the heat exchange fluid may also first flow into the first heat exchange section 11 and then flow into the second heat exchange section 12 to exchange heat with the battery assembly 200, which will not be repeated here.

[0366] In the above embodiment, a fifth heat exchange portion 127 is provided in the second heat exchange section 12 to fit with the fourth group of battery cells 205, so that the heat exchange component 100 can better cooperate with the heat dissipation conditions of the battery cells 2011 at different positions in the battery 400 to arrange the heat exchange flow channels, so that the heat exchange component 100 has a better heat exchange effect on the battery assembly 200, thereby making the internal temperature distribution of the battery 400 more uniform during operation, thereby making the battery 400 operate more stably.

[0367] Please refer to Figures 3 and 10 again. In the embodiment of the present application, the second heat exchange part 121 extends along the second direction, and the second direction and the third direction are the same direction. The third heat exchange part 122 and the fourth heat exchange part 125 extend along the first direction, and the first direction and the fifth direction are the same direction.

[0368] The battery unit 201 includes a plurality of battery cells 2011 stacked in sequence along the third direction, and the plurality of battery cells 201 are arranged in sequence along the fifth direction. Thus, the second heat exchange portion 121 extends along the stacking direction of the plurality of battery cells 2011, and the third heat exchange portion 122 and the fourth heat exchange portion 125 extend along the arrangement direction of the plurality of battery cells 201. That is, the second heat exchange portion 121 can perform heat exchange on the plurality of battery cells 2011 of a battery unit 201, and the third heat exchange portion 122 and the fourth heat exchange portion 125 can perform heat exchange on the plurality of battery cells 2011 of a plurality of battery units 201.

[0369] There are generally two ways to stack multiple battery cells 2011: one is stacking along the thickness direction of the battery cells 2011, and the other is stacking along the length direction of the battery cells 2011. When multiple battery cells 2011 are stacked along the thickness direction of the battery cells 2011, the multiple battery units 201 are arranged sequentially along the length direction of the battery cells 2011; when multiple battery cells 2011 are stacked along the length direction of the battery cells 2011, the multiple battery units 201 are arranged sequentially along the thickness direction of the battery cells 2011. Therefore, when multiple battery cells 2011 are stacked along the thickness direction of the battery cell 2011, the second heat exchange part 121 can exchange heat for multiple battery cells 2011 of one battery unit 201 along the thickness direction of the battery cell 2011, and the third heat exchange part 122 and the fourth heat exchange part 125 can exchange heat for multiple battery cells 2011 of multiple battery units 201 along the length direction of the battery cell 2011; when multiple battery cells 2011 are stacked along the length direction of the battery cell 2011, the second heat exchange part 121 can exchange heat for multiple battery cells 2011 of one battery unit 201 along the length direction of the battery cell 2011, and the third heat exchange part 122 and the fourth heat exchange part 125 can exchange heat for multiple battery cells 2011 of multiple battery units 201 along the width direction of the battery cell 2011, which can ensure heat exchange efficiency and effect.

[0370] Please refer to Figure 10 again. The second direction is the thickness direction of the battery cell 2011, that is, the direction of X2 as shown in Figure 10, and the first direction is the length direction of the battery cell 2011, that is, the direction of Y2 as shown in Figure 10. Therefore, the multiple battery cells 2011 included in the battery unit 201 are stacked along the thickness direction of the battery cell 2011, and the multiple battery cells 201 included in the battery assembly 200 are arranged in sequence along the length direction of the battery cell 2011. Therefore, the second heat exchange part 121 can extend along the thickness direction of the battery cell 2011 to achieve heat exchange for multiple battery cells 2011; the third heat exchange part 122 and the fourth heat exchange part 125 can extend along the length direction of the battery cell 2011 and exchange heat with the battery cell 2011. Therefore, the arrangement of the first heat exchange channel 10 of the heat exchange component 100 can be more reasonable, thereby enhancing the heat exchange effect of the heat exchange component 100 on the battery assembly 200.

[0371] In the above embodiment, the second heat exchange part 121 is extended along the second direction, the second direction and the third direction are the same direction, the third heat exchange part 122 and the fourth heat exchange part 125 are extended along the first direction, the first direction and the fifth direction are the same direction, so that the extension directions of the second heat exchange part 121, the third heat exchange part 122 and the fourth heat exchange part 125 can be designed according to the arrangement of the battery unit 201. Therefore, the arrangement of the first heat exchange channel 10 can better meet the heat exchange requirements of the battery assembly 200 and improve the heat exchange efficiency.

[0372] Please refer to FIG. 13 again. In the embodiment of the present application, the first heat exchange portion 111 extends along the first direction, and the first direction and the fifth direction are the same direction.

[0373] In this embodiment, the first heat exchange part 111, the third heat exchange part 122 and the fourth heat exchange part 125 can all extend along the first direction, and the second heat exchange part 121 extends along the second direction. In this way, multiple first heat exchange parts 111 are connected to form an S-shaped heat exchange flow channel extending along the second direction.

[0374] The first direction may be the length direction of the battery cell 2011. For example, as shown in FIG13 , the first direction is the length direction of the battery cell 2011, that is, the direction of Y2 as shown in FIG13 . Thus, the first heat exchange portion 111 extends along the length direction of the battery cell 2011 and exchanges heat with the battery cell 2011. In this way, the heat exchange area between the first heat exchange portion 111 and the battery cell 2011 can be increased, thereby increasing the heat exchange effect of the battery cell 2011. It may also be the thickness direction of the battery cell 2011. In this way, heat exchange can be achieved for multiple battery cells 2011.

[0375] In the above embodiment, by setting the first heat exchange portion 111 to extend along the first direction, the first direction and the fifth direction are the same direction, so that the first heat exchange portion 111 can extend along the arrangement direction of the multiple battery cells 201, and then the first heat exchange portion 111 can perform heat exchange on the multiple battery cells 2011 of the multiple battery cells 201. When the multiple battery cells 201 are arranged in sequence along the thickness direction of the battery cells 2011, the first heat exchange portion 111 can realize heat exchange for the multiple battery cells 2011; when the multiple battery cells 201 are arranged in sequence along the length direction of the battery cells 2011, the heat exchange area between the first heat exchange portion 111 and the battery cells 2011 is increased, thereby increasing the heat exchange effect of the battery cells 2011.

[0376] In some specific embodiments of the present application, the first heat exchange portion 111 extends along the second direction, and the second direction and the third direction are the same direction.

[0377] The first heat exchange portion 111 and the second heat exchange portion 121 extend in the same direction, and the first heat exchange portion 111 and the second heat exchange portion 121 are arranged in parallel and spaced apart.

[0378] For example, as shown in Figure 12, the second direction is the thickness direction of the battery cell 2011, that is, the direction of X2 as shown in Figure 12. At this time, the first heat exchange part 111 and the second heat exchange part 121 can both exchange heat for multiple battery cells 2011. This is beneficial to reducing the number of first heat exchange parts 111, reducing the number of bends of the first heat exchange channel 10, reducing the pressure drop of the heat exchange fluid in the first heat exchange channel 10, and improving the heat exchange efficiency.

[0379] In the above embodiment, by setting the first heat exchange part 111 to extend along the second direction, the number of first heat exchange parts 111 can be reduced, the number of bends of the first heat exchange channel 10 can be reduced, the pressure drop of the heat exchange fluid in the first heat exchange channel 10 can be reduced, and the heat exchange efficiency can be improved.

[0380] Please refer to Figures 10 to 15 again. In an embodiment of the present application, the battery assembly 200 includes a plurality of battery cells 201 arranged in sequence along the fifth direction. At least one battery cell 201 located at both ends in the fifth direction is a first group of battery cells 202. The second heat exchange portion 121 and at least one first heat exchange portion 111 of the first heat exchange section 11 are jointly attached to the first group of battery cells 202 to enable heat exchange.

[0381] The above “at least one battery cell 201 located at both ends in the fifth direction is a first group of battery cells 202 ” is intended to indicate that either one of the battery cells 201 located at both ends in the fifth direction may be formed as a first group of battery cells 202 , or both of the battery cells 201 located at both ends in the fifth direction may be formed as a first group of battery cells 202 .

[0382] The above “the second heat exchange part 121 and at least one first heat exchange part 111 of the first heat exchange section 11 are jointly attached to the first group of battery cells 202” is intended to indicate that the first group of battery cells 202 can be attached to and exchange heat with the second heat exchange part 121 and one first heat exchange part 111, or can be attached to and exchange heat with the second heat exchange part 121 and multiple first heat exchange parts 111. For example, the number of first heat exchange parts 111 attached to and exchange heat with the first group of battery cells 202 can be two, three or more.

[0383] In the above embodiment, by providing the second heat exchange portion 121 and at least one first heat exchange portion 111 of the first heat exchange section 11 to jointly exchange heat with the first group of battery cells 202, the heat exchange area between the first heat exchange channel 10 and the first group of battery cells 202 can be increased. At the same time, the temperature difference at different positions of the first group of battery cells 202 can be balanced, thereby improving the temperature uniformity of the first group of battery cells 202.

[0384] According to some embodiments of the present application, as shown in Figure 10, there are multiple first heat exchange parts 111, which are bent and connected in sequence in a first direction (for example, the Y1 direction shown in Figure 10); the second heat exchange part 121 and the first heat exchange part 111 farthest from the second heat exchange part 121 along the connecting line connected in sequence exchange heat with the first group of battery cells 202.

[0385] The first heat exchange part 111 and the second heat exchange part 121 both extend along the second direction (for example, the X1 direction shown in Figure 10), and the first heat exchange part 111 and the second heat exchange part 121 are connected through the third heat exchange part 122. 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. As a result, the second heat exchange part 121 and the first heat exchange part 111 that is farthest away from the second heat exchange part 121 along the connecting line connected in sequence are heat-exchanged with the first group of battery cells 202. That is, the second heat exchange part 121 and the first heat exchange part 111 closest to the second heat exchange part 121 are heat-exchanged with the first group of battery cells 202.

[0386] When the battery assembly 200 is heated, the high-temperature heat exchange fluid can enter the second heat exchange part 121 through the fourth heat exchange part 125. At this time, the temperature of the heat exchange fluid in the second heat exchange part 121 is relatively high, and then the heat exchange fluid flows through the third heat exchange part 122 to the first heat exchange section 11. In the first heat exchange section 11, the heat exchange fluid first enters the first heat exchange part 111 farthest from the second heat exchange part 121, and then passes through multiple first heat exchange parts 111 in turn to exchange heat with the battery assembly 200 until it flows to the first heat exchange part 111 farthest along the fluid flow direction. The first heat exchange part 111 is closest to the second heat exchange part 121 in a straight line, and exchanges heat with the first group of battery cells 202 together with the second heat exchange part 121. The temperature of the heat exchange fluid entering the second heat exchange part 121 is higher, close to the inlet temperature of the first heat exchange channel 10, and the temperature of the heat exchange fluid in the first heat exchange part 111 closest to the second heat exchange part 121 is lower, close to the outlet temperature of the first heat exchange channel 10.

[0387] When cooling the battery assembly 200, the low-temperature heat exchange fluid may first enter the first heat exchange section 11. Within the first heat exchange section 11, the heat exchange fluid first enters the first heat exchange section 111 adjacent to the second heat exchange section 121 to exchange heat with the first group of battery cells 202. The heat exchange fluid then flows sequentially through the multiple first heat exchange sections 111, exchanging heat with the battery assembly 200. The fluid then enters the third heat exchange section 122 through the first heat exchange section 111 farthest from the second heat exchange section 121, and flows through the third heat exchange section 122 to the second heat exchange section 121. During the heat exchange process, the temperature of the heat exchange fluid within the first heat exchange section 111 closest to the second heat exchange section 121 is lower, approaching the inlet temperature of the first heat exchange channel 10. The temperature of the heat exchange fluid entering the second heat exchange section 121 is higher, approaching the outlet temperature of the first heat exchange channel 10.

[0388] The second heat exchange portion 121 and the adjacent first heat exchange portion 111 jointly exchange heat with the first group of battery cells 202, thereby balancing the temperature difference within the first group of battery cells 202 and thereby improving the temperature uniformity of the first group of battery cells 202. Furthermore, due to heat dissipation between the periphery of the battery assembly 200 and the environment, the first group of battery cells 202 dissipates greater heat than the battery cells 2011 located in the center of the battery assembly 200, resulting in a lower temperature. Therefore, the higher-temperature fluid flowing within the second heat exchange portion 121 exchanges heat with the first group of battery cells 202, raising the temperature of the first group of battery cells 202 and replenishing the heat lost by the first group of battery cells 202 due to heat exchange with the environment, thereby improving the temperature uniformity between the first group of battery cells 202 and the remaining battery cells 2011.

[0389] The temperature at the edge of the first group of battery cells 202 is lower than the temperature on the other side. Therefore, the first group of battery cells 202 exchanges heat with the second heat exchange part 121 and the first heat exchange part 111 that is farthest away from the second heat exchange part 121 along the connecting line connected in sequence, which can balance the temperature difference on both sides of the first group of battery cells 202, thereby improving the temperature uniformity of the first group of battery cells 202.

[0390] In the above embodiment, the second heat exchange part 121 and the first heat exchange part 111 farthest from the second heat exchange part 121 along the connecting line connected in sequence are provided for heat exchange with the first group of battery cells 202, so that the second heat exchange part 121 and the adjacent first heat exchange part 111 exchange heat with the first group of battery cells 202, and thus the second heat exchange part 121 can exchange heat with the edge position of the first group of battery cells 202, and the first heat exchange part 111 can exchange heat with the other side of the first group of battery cells 202. The temperature difference between the heat exchange fluid in the second heat exchange part 121 and the fluid in the first heat exchange part 111 is large, and the heat exchange temperature of the first group of battery cells 202 is roughly the average temperature of the second heat exchange part 121 and the adjacent first heat exchange part 111, thereby balancing the temperature difference of the first group of battery cells 202, and thus improving the temperature uniformity of the first group of battery cells 202.

[0391] According to some embodiments of the present application, as shown in Figure 3, the second heat exchange section 12 includes a second heat exchange part 121, a third heat exchange part 122 and a fourth heat exchange part 125 that are connected to each other. 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.

[0392] In some specific embodiments, the second heat exchange portion 121 extends and fits to the first group of battery cells 202 to enable heat exchange, the third heat exchange portion 122 extends and fits to the second group of battery cells 203 to enable heat exchange, and the fourth heat exchange portion 125 extends and fits to the third group of battery cells 204 to enable heat exchange.

[0393] Since the multiple battery cells 2011 included in the first battery cell group 202 are stacked along the third direction, the multiple battery cells 2011 included in the second battery cell group 203 are stacked along the fifth direction, and the multiple battery cells 2011 included in the third battery cell group 204 are stacked along the fifth direction, the second heat exchange portion 121 extends and fits the first battery cell group 202, that is, the second heat exchange portion 121 extends and fits the first battery cell group 202, that is, the second heat exchange portion 121 extends and fits the second battery cell group 203, that is, the third heat exchange portion 122 extends and fits the second battery cell group 203, that is, the third heat exchange portion 122 extends and fits the second battery cell group 203, that is, the third heat exchange portion 122 extends and fits the second battery cell group 203, that is, the fourth heat exchange portion 125 extends and fits the third battery cell group 204, that is, the fourth heat exchange portion 125 extends and fits the third battery cell group 204, that is, the fourth heat exchange portion 125 extends and fits the third battery cell group 204, that is, the fourth heat exchange portion 125 extends and fits the third battery cell group 204.

[0394] In the above embodiment, the second heat exchange portion 121 is extended and attached to the first group of battery cells 202 to enable heat exchange, the third heat exchange portion 122 is extended and attached to the second group of battery cells 203 to enable heat exchange, and the fourth heat exchange portion 125 is extended and attached to the third group of battery cells 204 to enable heat exchange. The second heat exchange section 12 can exchange heat with the periphery of the battery assembly 200, thereby balancing the temperature difference of the battery assembly 200 caused by heat dissipation.

[0395] In other specific embodiments, the second heat exchange portion 121 is attached to the second group of battery cells 203 to enable heat exchange, and the third heat exchange portion 122 is attached to the first group of battery cells 202 to enable heat exchange.

[0396] The first group of battery cells 202 includes multiple battery cells 2011 stacked along the third direction, and the second group of battery cells 203 includes multiple battery cells 2011 stacked along the fifth direction. The second heat exchange portion 121 is attached to the second group of battery cells 203, and the third heat exchange portion 122 is attached to the first group of battery cells 202. In other words, the second heat exchange portion 121 extends along the fifth direction and attaches to and exchanges heat with the second group of battery cells 203, while the third heat exchange portion 122 extends along the third direction and attaches to and exchanges heat with the first group of battery cells 202.

[0397] In the above embodiment, by setting the second heat exchange part 121 to be in contact with the second group of battery cells 203 so as to enable heat exchange, and the third heat exchange part 122 to be in contact with the first group of battery cells 202 so as to enable heat exchange, the heat exchange component 100 can be designed with heat exchange channels according to the arrangement of multiple battery cells 2011, thereby improving the applicability of the heat exchange component 100, enabling it to meet the cooling requirements of different batteries 400, and increase the heat exchange efficiency and temperature equalization effect of the battery 400.

[0398] According to some embodiments of the present application, as shown in FIG3 and FIG10, the first heat exchange channel 10 further includes: a third heat exchange section 13, the third heat exchange section 13 is connected to the first heat exchange section 11 along the fluid flow direction at one end away from the second heat exchange section 12, and is connected to the first heat exchange section 11 at an angle; the battery assembly 200 further includes a fifth group of battery cells 206, the fifth group of battery cells 206 includes a plurality of battery cells 2011 stacked along the fifth direction, and the fifth group of battery cells 206 is arranged adjacent to the third group of battery cells 204,

[0399] In some specific embodiments, the third heat exchange section 13 and the fourth heat exchange portion 125 are both attached to the third group of battery cells 204 to enable heat exchange.

[0400] The third heat exchange section 13 is connected to the end of the first heat exchange section 11 away from the second heat exchange section 12 along the fluid flow direction. The fourth heat exchange section 125, the second heat exchange section 121, and the third heat exchange section 122 are connected in sequence to form a U-shaped structure, and the other end of the third heat exchange section 122 is bent and connected to the first heat exchange section 11. As a result, the third heat exchange section 13 and the fourth heat exchange section 125 can respectively serve as the liquid inlet and liquid outlet of the first heat exchange channel 10. When the third heat exchange section 13 serves as the liquid inlet of the first heat exchange channel 10, the fourth heat exchange section 125 can serve as the liquid outlet of the first heat exchange channel 10; when the third heat exchange section 13 serves as the liquid outlet of the first heat exchange channel 10, the fourth heat exchange section 125 can serve as the liquid inlet of the first heat exchange channel 10.

[0401] The heat exchange fluids in the third heat exchange section 13 and the fourth heat exchange section 125 flow in opposite directions, resulting in the greatest temperature difference. For example, when fluid enters the fourth heat exchange section 125 to heat and maintain the battery 400, the temperature in the fourth heat exchange section 125 is the highest, while the temperature in the third heat exchange section 13 is the lowest. When cooling and exchanging heat with the battery 400, the temperature in the fourth heat exchange section 125 is the lowest, while the temperature in the third heat exchange section 13 is the highest. Therefore, when both the third heat exchange section 13 and the fourth heat exchange section 125 are in contact with the third group of battery cells 204 to enable heat exchange, the temperature difference within the third group of battery cells 204 can be balanced, improving the temperature uniformity of the third group of battery cells 204.

[0402] In other specific embodiments, the third heat exchange section 13 is attached to the fifth group of battery cells 206 to enable heat exchange, and the fourth heat exchange portion 125 is attached to the third group of battery cells 204 to enable heat exchange.

[0403] In this embodiment, the third heat exchange section 13 and the fourth heat exchange section 125 both extend along the fifth direction. When the fifth direction is the length direction of the battery cell 2011, the contact area between the third heat exchange section 13 and the fourth heat exchange section 31 and the battery cell 2011 can be increased, thereby increasing the heat exchange effect on the fifth group of battery cells 206 and the third group of battery cells 204. At the same time, since the fifth group of battery cells 206 and the third group of battery cells 204 are arranged adjacent to each other, the third heat exchange section 13 and the fifth group of battery cells 206 are fitted together to enable heat exchange, and the fourth heat exchange section 125 and the third group of battery cells 204 are fitted together to enable heat exchange, and can also balance the temperature difference of the battery assembly 200 at the edge due to the water temperature difference.

[0404] In some other specific embodiments, the third heat exchange section 13 is attached to the third group of battery cells 204 to enable heat exchange, and the fourth heat exchange portion 125 is arranged on the outside of the battery assembly 200 in the third direction.

[0405] The fourth heat exchange portion 125 does not exchange heat with the battery assembly 200, and the third heat exchange portion 122 extends in the fifth direction and exchanges heat with the third group of battery cells 204. Therefore, when the fifth direction is the length direction of the battery cell 2011, the contact area between the third heat exchange section 13 and the third group of battery cells 204 can be increased, thereby improving the heat exchange effect of the heat exchange component 100.

[0406] In the above embodiment, by setting the third heat exchange section 13 and the fourth heat exchange part 125 to be in close contact with the third group of battery cells 204 for heat exchange, the temperature difference of the third group of battery cells 204 can be balanced and the temperature uniformity of the third group of battery cells 204 can be improved; by setting the third heat exchange section 13 to be in close contact with the third group of battery cells 204 for heat exchange, and the fourth heat exchange part 125 is arranged on the outside of the battery assembly 200 in the third direction, the heat exchange process can be simplified and the production difficulty of the heat exchange component 100 can be reduced.

[0407] According to some embodiments of the present application, as shown in Figures 10 to 15, the first heat exchange portion 111 of the first heat exchange section 11 and the second heat exchange portion 121 of the second heat exchange section 12 both extend along the second direction (for example, the X1 direction shown in Figure 10) and are arranged at intervals in the first direction (for example, the Y1 direction shown in Figure 10), and one battery cell 201 is fitted with one second heat exchange portion 121 and at least one first heat exchange portion 111 to enable heat exchange; or, one battery cell 201 is fitted with at least two first heat exchange portions 111 to enable heat exchange.

[0408] In some embodiments, a battery cell 201 is attached to a second heat exchange part 121 and at least one first heat exchange part 111 to enable heat exchange. The number of first heat exchange parts 111 that exchange heat with the second heat exchange part 121 on the same battery cell 201 can be one, two, three or more. In other embodiments, a battery cell 201 is attached to at least two first heat exchange parts 111 to enable heat exchange. For example, when a battery cell 201 exchanges heat only with the first heat exchange part 111, the number of first heat exchange parts 111 can be two, three, four or more. In other words, a battery cell 201 exchanges heat with at least two heat exchange parts, which not only increases the heat exchange area and thus increases the heat exchange effect, but also improves the temperature uniformity of the battery cell 201.

[0409] In the above embodiment, a battery cell 201 is arranged to be attached to a second heat exchange part 121 and at least one first heat exchange part 111 so as to enable heat exchange; or a battery cell 201 is attached to at least two first heat exchange parts 111 so as to enable heat exchange, so that a battery cell 201 can exchange heat with at least two heat exchange parts, thereby increasing the heat exchange area and thus increasing the heat exchange effect.

[0410] According to some embodiments of the present application, the total number of the first heat exchange parts 111 and the second heat exchange parts 121 of the first heat exchange channel 10 is greater than or equal to 4.

[0411] The total number of the first heat exchange parts 111 and the second heat exchange parts 121 of the first heat exchange channel 10 may be 4, 5, 6, 7 or more.

[0412] In the above embodiment, by setting the total number of the first heat exchange part 111 and the second heat exchange part 121 of the first heat exchange channel 10 to be greater than or equal to 4, the length of each heat exchange channel can be increased, the total number of heat exchange channels can be reduced, and the sealing performance of the heat exchange component 100 can be improved.

[0413] According to some embodiments of the present application, as shown in Figures 3 and 10, the number of first heat exchange channels 10 is two, and each first heat exchange channel 10 includes: three first heat exchange parts 111, one second heat exchange part 121, one third heat exchange part 122, one fourth heat exchange part 125 and one third heat exchange section 13. The number of battery cells 201 is four, and the battery cell 201 at the end in the fifth direction is attached to one first heat exchange part 111 and one second heat exchange part 121 to enable heat exchange. Any of the remaining battery cells 201 are fitted with the two first heat exchange parts 111 to enable exchange, the third heat exchange part 122 is connected to the second heat exchange part 121 and the first heat exchange part 111 farthest from the second heat exchange part 121, and is fitted with the second group of battery cells 203 to enable heat exchange, the third heat exchange section 13 is connected to the first heat exchange part 111 closest to the second heat exchange part 121, the third heat exchange section 13 and / or the fourth heat exchange part 125 are fitted with the third group of battery cells 204 to enable heat exchange.

[0414] For the four battery cells 201, since the peripheral position of the battery assembly 200 dissipates more heat, the temperature of the two first-group battery cells 202 located at the two ends in the fifth direction is lower than the temperature of the two battery cells 201 in the middle position; the temperature of the second-group battery cells 203 and the third-group battery cells 204 located at the two ends in the third direction is lower than the temperature of the battery cells 2011 at other positions.

[0415] The battery cell 201 at the end in the fifth direction is aligned with the first heat exchange portion 111 and the second heat exchange portion 121 closest to the second heat exchange portion 121, while any remaining battery cell 201 is aligned with the other two first heat exchange portions 111. When cooling or heating the battery assembly 200, the temperature of the heat exchange fluid flowing in the second heat exchange portion 121 is higher, close to the inlet temperature of the first heat exchange channel 10. The temperature of the first heat exchange portion 111 closest to the second heat exchange portion 121 is lower, close to the outlet temperature of the first heat exchange channel 10. The temperatures of the remaining two first heat exchange portions 111 are between the two, and the temperatures of the three first heat exchange portions 111 are similar. As a result, the average temperature of the second heat exchange portion 121 and the first heat exchange portion 111 closest to the second heat exchange portion 121 is higher than the average temperature of the remaining two first heat exchange portions 111. Consequently, the average heat exchange temperature corresponding to the battery cell 201 at the end in the fifth direction is relatively high, thereby compensating for the temperature difference caused by heat dissipation.

[0416] In addition, the third heat exchange section 13 and / or the fourth heat exchange part 125 are fitted with the third group of battery cells 204 to enable heat exchange. Only the third heat exchange section 13 can be fitted with the third group of battery cells 204 for heat exchange, or only the fourth heat exchange part 125 can be fitted with the third group of battery cells 204 for heat exchange, or both the third heat exchange section 13 and the fourth heat exchange part 125 can be fitted with the third group of battery cells 204 for heat exchange.

[0417] For example, as shown in Figure 10, the fifth direction is the length direction of the battery cell 2011, namely the Y2 direction shown in the figure, and the third direction is the thickness direction of the battery cell 2011, namely the X2 direction shown in the figure. The multiple battery cells 2011 included in the four battery units 201 extend along the thickness direction of the battery cells 2011 and are arranged at intervals along the length direction of the battery cells 2011. The two first heat exchange channels 10 are arranged symmetrically in the Y2 direction and exchange heat with the two battery cells 201 respectively.

[0418] Taking the first heat exchange channel 10 arranged on the side away from the coordinate origin in the Y2 direction in the figure as an example, the first heat exchange channel 10 includes a second heat exchange portion 121, three first heat exchange portions 111, a third heat exchange portion 122, a fourth heat exchange portion 125 and a third heat exchange section 13. The second heat exchange portion 121 and the first heat exchange portion 111a, the first heat exchange portion 111b and the first heat exchange portion 111c extend along the thickness direction of the battery cell 2011 and are arranged in sequence from the side away from the coordinate origin in the Y2 direction to the side close to the coordinate origin. The first heat exchange portion 111a, the first heat exchange portion 111b and the first heat exchange portion 111c are connected in sequence, and the second heat exchange portion 121 and the first heat exchange portion 111a exchange heat with the first group of battery cells 202, and the first heat exchange portion 111b and the first heat exchange portion 111c exchange heat with the battery unit 201 adjacent to the first group of battery cells 202; the third heat exchange portion 122 extends along the battery cell 201 1 and is connected between an end of the second heat exchange portion 121 in the X2 direction close to the coordinate origin and the first heat exchange portion 111c, and is used to exchange heat with the second group of battery cells 203; the fourth heat exchange portion 125 is connected to an end of the second heat exchange portion 121 in the X2 direction away from the coordinate origin and extends along the length direction of the battery cell 2011 to a position close to the first heat exchange portion 111c; the third heat exchange segment 13 is connected to an end of the first heat exchange portion 111a in the X1 direction away from the coordinate origin and extends along the length direction of the battery cell 2011 to a position close to the first heat exchange portion 111c, and exchanges heat with the third group of battery cells 204.

[0419] In the above embodiment, four battery cells 201 are matched with two first heat exchange channels 10, and each first heat exchange channel 10 includes three first heat exchange parts 111 and one second heat exchange part 121, so that each battery cell 201 can exchange heat with two heat exchange parts. In this way, the temperature uniformity of each battery cell 201 can be improved, and then the temperature uniformity of the entire battery 400 can be improved.

[0420] According to some embodiments of the present application, as shown in FIG14 , the number of the first heat exchange channels 10 is two, and each first heat exchange channel 10 includes: five first heat exchange parts 111, one second heat exchange part 121, one third heat exchange part 122, one fourth heat exchange part 125, and one third heat exchange section 13. The number of battery cells 201 is six, and the battery cells 201 at the end in the fifth direction are attached to one first heat exchange part 111 and one second heat exchange part 121 to enable heat exchange, and the rest Any battery unit 201 is attached to the two first heat exchange parts 111 to enable heat exchange, the third heat exchange part 122 is connected to the second heat exchange part 121 and the first heat exchange part 111 farthest from the second heat exchange part 121, and is attached to the second group of battery cells 203 to enable heat exchange, the third heat exchange section 13 is connected to the first heat exchange part 111 closest to the second heat exchange part 121, the third heat exchange section 13 and / or the fourth heat exchange part 125 are attached to the third group of battery cells 204 to enable heat exchange.

[0421] For six battery cells 201 matching two first heat exchange channels 10, each first heat exchange channel 10 needs to exchange heat with three battery cells 201, and each first heat exchange channel 10 includes five first heat exchange parts 111 and one second heat exchange part 121, so that each battery cell 201 exchanges heat with two heat exchange parts.

[0422] The battery cell 201 at the end in the fifth direction is bonded to the first heat exchange portion 111 and the second heat exchange portion 121 closest to the second heat exchange portion 121, and any remaining battery cells 201 are bonded to the other two first heat exchange portions 111. When cooling or heating the battery assembly 200, the temperature of the heat exchange fluid flowing in the second heat exchange portion 121 is higher, close to the inlet temperature of the first heat exchange channel 10, the temperature of the first heat exchange portion 111 closest to the second heat exchange portion 121 is lower, close to the outlet temperature of the first heat exchange channel 10, and the temperatures of the remaining four first heat exchange portions 111 are between the two, and the temperatures of the five first heat exchange portions 111 are not much different. Therefore, the average temperature of the second heat exchange portion 121 and the first heat exchange portion 111 closest to the second heat exchange portion 121 is higher than the average temperature of the remaining two first heat exchange portions 111. As a result, the average heat exchange temperature corresponding to the battery cell 201 at the end in the fifth direction is relatively high, thereby compensating for the temperature difference caused by heat dissipation.

[0423] The third heat exchange section 13 and / or the fourth heat exchange part 125 are fitted with the third group of battery cells 204 to enable heat exchange. It can be understood that only the third heat exchange section 13 can be fitted with the third group of battery cells 204 for heat exchange, or only the fourth heat exchange part 125 can be fitted with the third group of battery cells 204 for heat exchange, or both the third heat exchange section 13 and the fourth heat exchange part 125 can be fitted with the third group of battery cells 204 for heat exchange.

[0424] For example, as shown in Figure 14 , the fifth direction is the length direction of the battery cell 2011, i.e., the Y2 direction shown in the figure, and the third direction is the thickness direction of the battery cell 2011, i.e., the X2 direction shown in the figure. The six battery units 201 comprise multiple battery cells 2011 extending along the thickness direction of the battery cells 2011 and spaced apart along the length direction of the battery cells 2011. The two first heat exchange channels 10 are symmetrically arranged along the Y2 direction and exchange heat with the three battery cells 201, respectively.

[0425] Taking the first heat exchange channel 10 arranged on the side away from the coordinate origin in the Y2 direction in the figure as an example, the first heat exchange channel 10 includes a second heat exchange part 121, five first heat exchange parts 111, a third heat exchange part 122, a fourth heat exchange part 125 and a third heat exchange section 13. The second heat exchange portion 121 and the first heat exchange portion 111a, the first heat exchange portion 111b, the first heat exchange portion 111c, the first heat exchange portion 111d and the first heat exchange portion 111e extend along the thickness direction of the battery cell 2011 and are arranged in sequence from the side away from the coordinate origin in the Y2 direction to the side close to the coordinate origin. The first heat exchange portion 111a, the first heat exchange portion 111b, the first heat exchange portion 111c, the first heat exchange portion 111d and the first heat exchange portion 111e are connected in sequence, and the second heat exchange portion 121 and the first heat exchange portion 111a exchange heat with the first group of battery cells 202, the first heat exchange portion 111b and the first heat exchange portion 111c exchange heat with the battery unit 201 adjacent to the first group of battery cells 202, and the first heat exchange portion 111d and the first heat exchange portion 111 e exchanges heat with the battery unit 201 away from the first group of battery cells 202; the third heat exchange part 122 extends along the length direction of the battery cell 2011 and is connected between the end of the second heat exchange part 121 in the X2 direction close to the coordinate origin and the first heat exchange part 111e, and is used to exchange heat with the second group of battery cells 203; the fourth heat exchange part 125 is connected to the end of the second heat exchange part 121 in the X2 direction away from the coordinate origin and extends along the length direction of the battery cell 2011 to a position close to the first heat exchange part 111e; the third heat exchange section 13 is connected to the end of the first heat exchange part 111a in the X2 direction away from the coordinate origin and extends along the length direction of the battery cell 2011 to a position close to the first heat exchange part 111e, and exchanges heat with the third group of battery cells 204.

[0426] In the above embodiment, by setting six battery cells 201 to match two first heat exchange channels 10, and each first heat exchange channel 10 includes five first heat exchange parts 111 and one second heat exchange part 121, it can be ensured that each battery cell 201 can exchange heat with the two heat exchange parts, thereby ensuring the temperature uniformity of each battery cell 201.

[0427] According to some embodiments of the present application, as shown in FIG15 , the number of the first heat exchange channels 10 is two, and each first heat exchange channel 10 includes: five first heat exchange parts 111, one second heat exchange part 121, one third heat exchange part 122, one fourth heat exchange part 125, and one third heat exchange section 13. The number of battery cells 201 is four, and the battery cells 201 at the end in the fifth direction are attached to the two first heat exchange parts 111 and the one second heat exchange part 121 to enable heat exchange, and the rest Any battery unit 201 is fitted with the three first heat exchange parts 111 to enable heat exchange, the third heat exchange part 122 is connected to the second heat exchange part 121 and the first heat exchange part 111 farthest from the second heat exchange part 121, and is fitted with the second group of battery cells 203 to enable heat exchange, the third heat exchange section 13 is connected to the first heat exchange part 111 closest to the second heat exchange part 121, the third heat exchange section 13 and / or the fourth heat exchange part 125 are fitted with the third group of battery cells 204 to enable heat exchange.

[0428] For four battery cells 201 matching two first heat exchange channels 10, each first heat exchange channel 10 needs to exchange heat with two battery cells 201, and each first heat exchange channel 10 includes five first heat exchange parts 111 and one second heat exchange part 121, so that each battery cell 201 exchanges heat with three heat exchange parts.

[0429] The battery cell 201 at the end in the fifth direction exchanges heat with the two first heat exchange sections 111 and the second heat exchange section 121 closest to the second heat exchange section 121, while any remaining battery cell 201 exchanges heat with the other three first heat exchange sections 111. When cooling or heating the battery assembly 200, the temperature of the heat exchange fluid flowing in the second heat exchange section 121 is higher, close to the inlet temperature of the first heat exchange channel 10, the temperature of the two first heat exchange sections 111 closest to the second heat exchange section 121 is lower, close to the outlet temperature of the first heat exchange channel 10, and the temperature of the remaining three first heat exchange sections 111 is between the two, and the temperature difference between the five first heat exchange sections 111 is not much. Therefore, the average temperature of the second heat exchange section 121 and the two first heat exchange sections 111 closest to the second heat exchange section 121 is higher than the average temperature of the remaining two first heat exchange sections 111. As a result, the average heat exchange temperature corresponding to the battery cell 201 at the end in the fifth direction is relatively high, thereby balancing the temperature difference caused by heat dissipation.

[0430] The third heat exchange section 13 and / or the fourth heat exchange part 125 are fitted with the third group of battery cells 204 to enable heat exchange. It can be understood that only the third heat exchange section 13 can be fitted with the third group of battery cells 204 for heat exchange, or only the fourth heat exchange part 125 can be fitted with the third group of battery cells 204 for heat exchange, or both the third heat exchange section 13 and the fourth heat exchange part 125 can be fitted with the third group of battery cells 204 for heat exchange.

[0431] As shown in Figure 15 , the fifth direction is the length direction of the battery cell 2011, i.e., the Y2 direction shown in the figure, and the third direction is the thickness direction of the battery cell 2011, i.e., the X2 direction shown in the figure. The four battery units 201 comprise multiple battery cells 2011 extending along the thickness direction of the battery cells 2011 and spaced apart along the length direction of the battery cells 2011. The two first heat exchange channels 10 are symmetrically arranged along the Y2 direction and exchange heat with the two battery cells 201, respectively.

[0432] Taking the first heat exchange channel 10 arranged on the side away from the coordinate origin in the Y2 direction in the figure as an example, the first heat exchange channel 10 includes a second heat exchange part 121, five first heat exchange parts 111, a third heat exchange part 122, a fourth heat exchange part 125 and a third heat exchange section 13. The second heat exchange portion 121 and the first heat exchange portion 111a, the first heat exchange portion 111b, the first heat exchange portion 111c, the first heat exchange portion 111d and the first heat exchange portion 111e extend along the thickness direction of the battery cell 2011 and are arranged in sequence from the side away from the coordinate origin in the Y2 direction to the side close to the coordinate origin. The first heat exchange portion 111a, the first heat exchange portion 111b, the first heat exchange portion 111c, the first heat exchange portion 111d and the first heat exchange portion 111e are connected in sequence, and the second heat exchange portion 121 and the first heat exchange portion 111a and the first heat exchange portion 111b exchange heat with the first group of battery cells 202, and the first heat exchange portion 111c, the first heat exchange portion 111d and the first heat exchange portion 111e exchange heat with the first group of battery cells 202. The third heat exchange section 122 extends along the length direction of the battery cell 2011 and is connected between the end of the second heat exchange section 121 in the X2 direction close to the coordinate origin and the first heat exchange section 111e, and is used to exchange heat with the second group of battery cells 203; the fourth heat exchange section 125 is connected to the end of the second heat exchange section 121 away from the coordinate origin in the X2 direction and extends along the length direction of the battery cell 2011 to a position close to the first heat exchange section 111e; the third heat exchange section 13 is connected to the end of the first heat exchange section 111a in the X2 direction away from the coordinate origin and extends along the length direction of the battery cell 2011 to a position close to the first heat exchange section 111e, and exchanges heat with the third group of battery cells 204.

[0433] In the above embodiment, four battery cells 201 are matched with two first heat exchange channels 10, and each first heat exchange channel 10 includes five first heat exchange parts 111 and one second heat exchange part 121, so that each battery cell 201 can exchange heat with three heat exchange parts, which can further improve the temperature uniformity of each battery cell 201. At the same time, the heat exchange area of ​​the heat exchange component 100 for each battery cell 201 can be increased, thereby improving the heat exchange effect of the heat exchange component 100 and improving the temperature uniformity of the battery 400.

[0434] According to some embodiments of the present application, the number of battery cells 201 is 2 to 8.

[0435] The number of battery cells 201 may be 2, 3, 4, 5, 6, 7 or 8.

[0436] In the above embodiment, by setting the number of battery cells 201 to 2 to 8, it is beneficial to the overall design of the battery 400 and the heat exchanger 100, reducing the production difficulty of the heat exchanger 100 and the battery 400. At the same time, it can also increase the scope of application of the battery 400 and improve the market competitiveness of the battery 400.

[0437] The present application provides an electrical device, comprising: the battery in the above embodiment.

[0438] Other structures and operations of the box, battery and electrical device according to the embodiment of the present invention are well known to those skilled in the art and will not be described in detail here.

[0439] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," 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 illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0440] 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 box, comprising: border(310); A support plate (320) is provided on one side of the frame (310) and encloses a receiving space with the frame (310), wherein the support plate (320) comprises: a multi-layer structural plate (321), a buffer layer (322) provided between adjacent structural plates (321), and a heat exchange component provided on a side of the structural plate (321) adjacent to the receiving space and away from the frame (310), and at least one of the structural plates (321) is connected to the frame (310).

2. The box according to claim 1, wherein: The heat exchange element comprises a first heat exchange channel (10), the first heat exchange channel (10) comprising 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).

3. The box according to claim 2, wherein: The second heat exchange section (12) is located at the outermost side of the first heat exchange channel (10) in the circumferential direction; and / or the first heat exchange section (11) and the second heat exchange section (12) are bent in the same plane.

4. The box according to claim 2, wherein: The first heat exchange section (11) comprises a plurality of first heat exchange parts (111), the plurality of first heat exchange parts (111) are arranged at intervals and are bent in sequence and connected; the plurality of first heat exchange parts (111) are arranged at intervals along a first direction, each of the first heat exchange parts (111) extends linearly along a second direction, and the first direction and the second direction are arranged at an angle.

5. The box according to any one of claims 2 to 4, wherein: The second heat exchange section (12) comprises: a second heat exchange part (121), a third heat exchange part (122) and a fourth heat exchange part (125), wherein 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 communicated 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).

6. The box according to claim 5, wherein: The first heat exchange section (11) comprises a plurality of first heat exchange parts (111), and the plurality of first heat exchange parts (111) are bent and connected in sequence in a first direction; wherein, The second heat exchange portion (121) is located on one side of the plurality of first heat exchange portions (111) along the first direction. The third heat exchange portion (122) is located on one side of the plurality of first heat exchange portions (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 portion (122) is connected to one end of the second heat exchange portion (121) along the second direction, and a second end of the third heat exchange portion (122) is connected to one of the plurality of first heat exchange portions (111) that is farthest from the second heat exchange portion (121) along the first direction; the fourth heat exchange portion (125) is located on the other side of the plurality of first heat exchange portions (111) along the second direction, one end of the fourth heat exchange portion (125) is connected to one end of the second heat exchange portion (121) away from the third heat exchange portion (122), and the other end of the fourth heat exchange portion (125) extends along the first direction toward a direction away from the second heat exchange portion (121); or, 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 one of the plurality of first heat exchange parts (111) that is closest to the third heat exchange part (122) along the first direction; the 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).

7. The box according to claim 6, wherein: The third heat exchange portion (122) and the fourth heat exchange portion (125) are extended along the first direction, and the first heat exchange portion (111) and the second heat exchange portion (121) are both extended along the second direction; or, The first heat exchange portion (111), the third heat exchange portion (122), and the fourth heat exchange portion (125) are all extended along the second direction, and the second heat exchange portion (121) is extended along the first direction.

8. The box according to claim 7, wherein: The third heat exchange portion (122) and the fourth heat exchange portion (125) are both extended along a first direction, and in the first direction, the length of the fourth heat exchange portion (125) is less than or equal to the length of the third heat exchange portion (122); or The first heat exchange portion (111) and the third heat exchange portion (122) extend along the second direction, the second heat exchange portion (121) extends along the first direction, and in the second direction, the length of the third heat exchange portion (122) is greater than or equal to the length of the first heat exchange portion (111).

9. The box according to claim 7, wherein: The fourth heat exchange portion (125) extends along the first direction and extends to a position close to one of the plurality of first heat exchange portions (111) that is farthest from the second heat exchange portion (121).

10. The housing according to claim 5, wherein: The second heat exchange section (12) further includes: a fifth heat exchange portion, which extends along the fourth side periphery of the first heat exchange section (11) and closes at least a portion 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).

11. The housing according to claim 10, wherein: The fifth heat exchange portion is arranged opposite to the second heat exchange portion (121), The fifth heat exchange part 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; or, one end of the fifth heat exchange part 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 is connected to the fourth heat exchange part (125) at an angle.

12. The housing according to claim 5, wherein: The first heat exchange channel (10) further includes: 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.

13. The housing according to claim 12, wherein: The first heat exchange section (11) comprises a plurality of first heat exchange parts (111), and the plurality of first heat exchange parts (111) are bent and connected in sequence in a first direction; 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), and the third heat exchange section (13) is connected to the one of the plurality of first heat exchange portions (111) that is closest to the second heat exchange portion (121) along the first direction.

14. The housing according to claim 13, wherein: The third heat exchange section (13) extends along the first direction in a direction away from the second heat exchange portion (121), and the first heat exchange portion (111) extends along the second direction, wherein the first direction and the second direction are arranged at an angle.

15. The housing according to claim 14, wherein: 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).

16. The box according to any one of claims 2 to 4, wherein: The first heat exchange section (11) is connected to the downstream of the second heat exchange section (12) along the direction of fluid flow; or the heat exchange element is configured as follows: when heating the battery assembly, the first heat exchange section (11) is connected to the downstream of the second heat exchange section (12) along the direction of fluid flow; when cooling the battery assembly of the battery, the first heat exchange section (11) is connected to the upstream of the second heat exchange section (12) along the direction of fluid flow.

17. The box according to any one of claims 2 to 4, wherein: The box body 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 (10), and the multiple heat exchange channels are arranged in parallel.

18. The housing according to claim 17, wherein: The plurality of heat exchange channels are arranged at intervals along a first direction, and the two heat exchange channels located at both ends of the first direction are both the first heat exchange channels (10); and the two first heat exchange channels (10) are arranged symmetrically about the center line of the box along a second direction, wherein the second direction is set at an angle to the first direction.

19. The housing according to claim 17, wherein: The plurality of heat exchange channels are symmetrically arranged about a center line of the box body along the second direction.

20. The housing according to claim 17, wherein: The plurality of heat exchange channels also include: at least one second heat exchange channel (30), wherein the second heat exchange channel (30) is arranged between two of the first heat exchange channels (10), wherein the structure of any one of the second heat exchange channels (30) is the same as or different from the structure of the first heat exchange channel (10).

21. The housing according to claim 20, wherein: The second heat exchange channel (30) includes a plurality of fourth heat exchange segments (31), and the plurality of fourth heat exchange segments (31) are connected in sequence, wherein the fourth heat exchange segments (31) extend along the second direction, and the plurality of fourth heat exchange segments (31) are arranged at intervals in the first direction.

22. The housing according to claim 17, wherein: The heat exchange component has a plurality of heat exchange channels, and the plurality of heat exchange channels include a first heat exchange channel (10) and at least one fourth heat exchange channel, the fourth heat exchange channel is bent in the U-shaped area (120) of the first heat exchange channel (10), and the first heat exchange channel (10) and the fourth heat exchange channel are bent in the same plane, and the bending structures of the first heat exchange channel (10) and the fourth heat exchange channel are the same or different.

23. The housing according to claim 22, wherein: The fourth heat exchange channel comprises a U-shaped region (120) having the same structure as the first heat exchange channel (10), and at least a portion of the first heat exchange section (11) of the first heat exchange channel (10) is arranged in the U-shaped region (120) of the fourth heat exchange channel.

24. The housing according to claim 22, wherein the U-shaped region (120) of the first heat exchange channel (10) is located at the outermost circumference of the heat exchange element.

25. The housing according to claim 17, wherein: The box body includes at least one heat exchange tube. When there are multiple heat exchange tubes, the multiple heat exchange tubes are arranged at intervals along the first direction, and the inner side of each heat exchange tube defines a heat exchange channel.

26. The box according to any one of claims 1 to 4, wherein: The buffer layer (322) is constructed as a porous structure.

27. The housing according to claim 26, wherein: The holes on the buffer layer (322) extend in opposite directions of adjacent structural plates (321).

28. The housing according to claim 26, wherein: The buffer layer (322) is constructed as a plastic material piece or a metal material piece; when the buffer layer (322) is constructed as a plastic material piece, the buffer layer (322) and the structural plate (321) are hot-melt pressed; when the buffer layer (322) is constructed as a metal material piece, the buffer layer (322) and the structural plate (321) are brazed.

29. The box according to any one of claims 1 to 4, wherein: The structural plate (321) includes: a first structural plate (3211) to an Nth structural plate (3212) arranged in sequence in the arrangement direction of the frame (310) and the support plate (320), N≥2, and at least the first structural plate (3211) and the Nth structural plate (3212) are connected to the frame (310).

30. The housing according to claim 29, wherein: A connecting flange (311) is provided on one side of the frame (310) facing the support plate (320); the structural dimensions of the buffer layer (322) are smaller than the structural dimensions of the structural plate (321) to define a slot, and the connecting flange (311) extends into the slot; or the connecting flange (311) is overlapped on the first structural plate (3211).

31. The housing according to claim 30, wherein: The minimum overlap size between the structural plate (321) and the connecting flange (311) is 6 mm.

32. The housing according to claim 30 or 31, wherein: The structural dimensions of the first structural plate (3211) are smaller than the structural dimensions of the Nth structural plate (3212), and the first structural plate (3211) is connected to the connecting flange (311), and the Nth structural plate (3212) is connected to the end face of the frame (310); or, The structural dimensions of the first structural plate (3211) are equal to the structural dimensions of the Nth structural plate (3212), and the first structural plate (3211) and the Nth structural plate (3212) are both connected to the connecting flange (311).

33. A battery, wherein: include: The casing according to any one of claims 1 to 32.

34. An electrical device, wherein: include: The battery of claim 33.

Images