Heat exchange part, box body, battery and electric equipment

Abstract

The invention discloses a heat exchange part, a box body, a battery and electric equipment. The heat exchange part (20) is used for the box body (100) of the battery (1000) and comprises a heat exchange plate (21) and a heat exchange plate (22), the back plate (22) is arranged on one side of the heat exchange plate (21) in a first direction (Z) and is connected with the heat exchange plate (21), and the first direction (Z) is the thickness direction of the heat exchange plate (21); the heat exchange plate (21) is arranged on the back plate (22), and the heat exchange pipe (23) is arranged between the heat exchange plate (21) and the back plate (22) and fixedly connected with the heat exchange plate (21) and / or the back plate (22).

Description

Heat exchange element, box, battery and electric device TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a heat exchange element, a box, a battery and an electric device. BACKGROUND

[0002] In the prior art, in order to ensure the normal operation and service life of the battery, a heat exchange element is usually arranged in the battery, which can exchange heat with the battery monomer to adjust the temperature of each battery monomer, thereby ensuring the service life of the battery. However, the heat conduction performance between the heat exchange element arranged on the outside of the box and the battery assembly is poor in the related art, and the weight of the punched heat exchange element is large, the pressure drop is high, and the flow distribution is uneven.

[0003] CONTENT

[0004] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a heat exchange element, and a box, a battery and an electric device comprising the heat exchange element, the heat exchange element has a high thermal conductivity and good heat conduction effect, the flow of the heat exchange pipe is uniform, the pressure drop is small, and the weight is light, compared with the punched flow channel plate, which can improve the energy density of the battery.

[0005] In the first aspect, the embodiments of the present application provide a heat exchange element for a box of a battery, comprising: a heat exchange plate; a back plate, the back plate is arranged on one side of the heat exchange plate in a first direction, and is connected with the heat exchange plate, the first direction is the thickness direction of the heat exchange plate; a heat exchange pipe, the heat exchange pipe is arranged between the heat exchange plate and the back plate, and is fixedly connected with the heat exchange plate and / or the back plate.

[0006] In the above technical solution, since the heat exchange element is directly used in the box of the battery, and comprises the heat exchange plate, the heat exchange pipe and the back plate arranged in turn from inside to outside, the heat exchange element not only can replace part of the box, reduce the number of parts of the battery, and reduce the cost, and the heat exchange pipe is connected with the heat exchange plate, has a high thermal conductivity and good heat conduction effect, can improve the heat exchange efficiency between the heat exchange element and the battery monomer, in addition, the heat exchange element comprises the heat exchange pipe, compared with the punched flow channel plate, the flow of the heat exchange pipe is uniform, the pressure drop is small, and the weight is light, which can improve the energy density of the battery.

[0007] In some embodiments, a side surface of the heat exchange plate away from the heat exchange pipe is formed with an anti-overflow groove, and a bottom wall and / or a side wall of the anti-overflow groove are adapted to be adhesively connected with the plurality of battery monomers.

[0008] In the above technical solution, since the side surface of the heat exchange plate is provided with the anti-overflow groove, the anti-overflow groove can effectively reduce the probability of glue overflow when the battery monomer is adhesively connected with the heat exchange plate.

[0009] In some embodiments, the anti-overflow groove is formed by recessing a portion of the heat exchange plate towards the back plate along the first direction.

[0010] In the above technical solution, since the anti-overflow groove is formed by recessing a part of the heat exchange plate, the processing process of the anti-overflow groove can be simplified, the processing difficulty is reduced, the thickness of the heat exchange plate is reduced, the cost is reduced, the structural rigidity of the heat exchange plate can be increased, and the overall strength of the heat exchange element is enhanced.

[0011] In some embodiments, the periphery of the heat exchange plate is provided with a flange extending outwardly away from the center of the heat exchange plate, and the flange extends in a ring shape along the circumference of the anti-overflow groove.

[0012] In the above technical solution, since the periphery of the heat exchange plate is provided with a ring-shaped flange, the flange can facilitate the sealing fit between the heat exchange element and the first part of the tank, facilitate the positioning and assembly of a sealing gasket arranged between the heat exchange element and the first part of the tank, and improve the sealing performance of the tank.

[0013] In some embodiments, the depth of the anti-overflow groove is greater than or equal to 7mm, and / or the width of the flange is greater than or equal to 10mm.

[0014] In the above technical solution, the depth of the anti-overflow groove is greater than or equal to 7mm, which not only reduces the probability of overflow when the battery monomer is bonded to the heat exchange plate, but also reduces the processing difficulty of the heat exchange plate and improves the finished product quality of the heat exchange plate; the width of the flange is greater than or equal to 10mm, which can increase the connection area between the heat exchange element and the first part of the tank, and improve the connection reliability and sealing performance between the heat exchange element and the first part.

[0015] In some embodiments, one of the back plate and the heat exchange plate is formed with a reinforcing rib protruding towards the heat exchange pipe, and the reinforcing rib is fixedly connected with the other one of the back plate and the heat exchange plate.

[0016] In the above technical solution, by providing a reinforcing rib on the back plate or the heat exchange plate and connecting the heat exchange plate and the back plate through the reinforcing rib, not only the structural strength of the back plate or the heat exchange plate can be increased, but also the integrity between the back plate, the heat exchange plate and the heat exchange pipe can be enhanced, and the overall structural strength of the heat exchange element is further improved.

[0017] In some embodiments, the number of reinforcing ribs is a plurality, the plurality of reinforcing ribs extend along a second direction and are arranged in a spaced manner in a third direction, at least part of the heat exchange pipes are arranged between adjacent two reinforcing ribs, and the first direction, the second direction and the third direction are intersected two by two.

[0018] In the technical scheme, the plurality of reinforcing ribs can be used to strengthen the structural strength of the back plate and the overall structural strength of the heat exchange element, the heat exchange tubes are accommodated in the avoidance grooves defined between adjacent reinforcing ribs, the thickness of the heat exchange element in the first direction can be reduced, the reinforcing ribs and the heat exchange tubes do not interfere with each other, the structural layout of the heat exchange element is more compact, the space occupation is reduced, and the plurality of reinforcing ribs can protect the heat exchange tubes.

[0019] In some embodiments, the heat exchange tube includes a plurality of straight tube segments, the plurality of straight tube segments extend along the second direction and are arranged at intervals in the third direction, and the plurality of straight tube segments and the plurality of reinforcing ribs are arranged alternately in the third direction.

[0020] In the technical scheme, the plurality of straight tube segments and the plurality of reinforcing ribs are arranged alternately in the third direction, which can further simplify the structure of the heat exchange tube and the back plate, compact the structure, facilitate the processing and forming of the back plate and the heat exchange tube, and protect the heat exchange tube by the plurality of reinforcing ribs.

[0021] In some embodiments, the periphery of the heat exchange plate is fixedly connected to the periphery of the back plate.

[0022] In the technical scheme, the periphery of the heat exchange plate is fixedly connected to the periphery of the back plate, which can further enhance the integrity between the heat exchange plate, the back plate and the heat exchange tube, further improve the structural strength of the heat exchange element, and reduce the probability of external impurities entering between the back plate and the heat exchange plate and the problem of affecting the heat exchange efficiency of the heat exchange tube.

[0023] In some embodiments, the number of heat exchange tubes is a plurality, and the plurality of heat exchange tubes are arranged at intervals in the third direction, and the third direction intersects the first direction.

[0024] In the technical scheme, the heat exchange element includes a plurality of heat exchange tubes, which can not only reduce the process complexity of the heat exchange element, improve the production rate of the heat exchange element, but also reduce the fluid pressure drop in a single heat exchange tube, improve the heat exchange efficiency, and improve the uniformity of temperature.

[0025] In some embodiments, the heat exchange tube includes a plurality of straight tube segments and at least one bending segment, the plurality of straight tube segments extend along the second direction and are arranged at intervals in the third direction, the plurality of straight tube segments are sequentially connected by the bending segment, and the first direction, the second direction and the third direction intersect each other.

[0026] In the technical scheme, the heat exchange tube includes a plurality of straight tube segments and at least one bending segment, which can simplify the structure of the heat exchange tube, reduce the processing and manufacturing cost of the heat exchange tube, and improve the heat exchange efficiency of the heat exchange tube.

[0027] In some embodiments, the heat exchange tube is welded or adhesively connected to the heat exchange plate, and the heat exchange plate is welded to the back plate.

[0028] In the above technical solution, the heat exchange tubes are welded or bonded to the heat exchange plates, and the heat exchange plates are welded to the back plate. This not only simplifies the connection structure between the heat exchange tubes, heat exchange plates and back plate and improves the assembly efficiency of the heat exchange components, but also improves the connection strength between the heat exchange tubes, heat exchange plates and back plate and enhances the structural strength of the heat exchange components.

[0029] In some embodiments, the heat exchanger further includes a current collector having a confluence cavity and a branch cavity, wherein the inlet of the heat exchange tube is connected to the branch cavity and the outlet is connected to the confluence cavity.

[0030] In the above technical solution, by setting up a collector, the outlet and inlet of the heat exchange tube are connected by the collector’s confluence cavity and the collector’s branch cavity, respectively. The heat exchanger can be fed and drained by the collector, making the overall structure of the heat exchanger compact.

[0031] In some embodiments, the manifold and the branching cavities are arranged along the thickness direction of the heat exchange plate. The inlet end of the heat exchange tube is bent toward one side of the heat exchange plate in the thickness direction and connected to the collector. The outlet end of the heat exchange tube is bent toward the other side of the heat exchange plate in the thickness direction and connected to the collector.

[0032] In the above technical solution, the manifold and branching cavities of the heat exchanger are arranged at intervals along the first direction, which can facilitate the alignment of the manifold and branching cavities with the inlet and outlet ends of multiple heat exchange tubes in the second direction. This facilitates the direct connection of multiple heat exchange tubes with the branching and manifold cavities. Since the inlet and outlet ends of the heat exchange tubes are bent towards both sides in the first direction and then connected to the heat exchanger, the inlet and outlet ends of the heat exchange tubes can be smoothly connected to the branching and manifold cavities of the heat exchanger, thus optimizing and compacting the connection structure between the heat exchange tubes and the heat exchanger.

[0033] In some embodiments, the current collector further forms a heat insulation cavity, which is arranged between the branch cavity and the confluence cavity.

[0034] In the above technical solution, by forming a heat insulation cavity in the current collector, the heat insulation cavity can be used to isolate the flow chamber and the flow distribution cavity, so that the fluid in the flow chamber and the flow distribution cavity can be insulated by the air in the heat insulation cavity, thereby improving the heat exchange performance of the heat exchanger.

[0035] In some embodiments, the current collector includes a current collector body and a baffle plate. The current collector body is tubular, and the baffle plate is disposed within the current collector body and extends along the length direction of the current collector body to separate the flow distribution cavity and the flow convergence cavity within the current collector body. The heat insulation cavity is formed within the baffle plate. Alternatively, there may be multiple baffle plates, which are spaced apart along the thickness direction of the heat exchange plate, and the heat insulation cavity is defined between two adjacent baffle plates.

[0036] In the above technical solution, by making the current collector include a current collector body and a baffle, using the baffle to separate the flow distribution cavity and the flow convergence cavity, and forming a heat insulation cavity on the baffle, or using the baffle to further separate the heat insulation cavity located between the flow distribution cavity and the flow convergence cavity, the structure of the current collector can be simplified and the processing and manufacturing can be facilitated while improving the heat insulation performance between the flow distribution cavity and the flow convergence cavity.

[0037] In some embodiments, the heat exchanger further includes: an inlet connector and an outlet connector, wherein an inlet communicating with a flow divider and an outlet communicating with a flow merger are formed on the current collector, both the inlet and the outlet are formed on the side of the current collector away from the heat exchange tube, the inlet connector is connected to the inlet position, and the outlet connector is connected to the outlet position.

[0038] In the above technical solution, both the liquid inlet and liquid outlet are connected to the side of the collector away from the heat exchange tube, which makes it convenient for the external liquid inlet and external liquid outlet pipes to be connected to the same side of the collector, thus organizing the routing of the external pipes and creating a compact structure.

[0039] In some embodiments, at least one of the inlet and outlet connectors is welded to the manifold via a welding gasket.

[0040] In the above technical solution, welding gaskets are used to weld the manifold to the inlet and outlet connectors, which facilitates the welding of the manifold to the inlet and outlet connectors and improves the welding quality.

[0041] In some embodiments, the heat exchanger further includes a support, which is disposed on the side of the back plate away from the heat exchange tube and is fixedly connected to the back plate.

[0042] In the above technical solution, a bracket is set on the side of the back plate away from the heat exchange tube. The bracket can not only strengthen the structural strength of the back plate and the overall strength of the heat exchange components, but also serve as a connection structure between the box and the external structure, making it convenient to fix the box and the external structure and to fix the battery.

[0043] In some embodiments, the number of supports is at least one. When the number of supports is multiple, the multiple supports extend along a third direction and are spaced apart in a second direction, with the first direction, the second direction and the third direction intersecting each other.

[0044] In the above technical solution, by setting multiple supports, and having multiple supports extend along a third direction and be arranged at intervals in a second direction, the structural strength of the heat exchanger can be further improved, and the connection and fixation of the battery to the external structure can be further facilitated.

[0045] In some embodiments, the support is plate-shaped and has reinforcing ribs.

[0046] In the above technical solution, by setting reinforcing ribs on the support, the structural strength of the support can be increased, and the overall structural strength of the heat exchanger can be further improved.

[0047] In some embodiments, a plurality of reinforcing ribs are formed on the support, the plurality of reinforcing ribs extending along a third direction and spaced apart in a second direction.

[0048] In the above technical solution, multiple reinforcing ribs extending along the third direction are provided on the support. The reinforcing ribs can be used to strengthen the structural strength of the support, thereby improving the structural strength of the heat exchanger along the third direction and enhancing the reliability of the heat exchanger.

[0049] In some embodiments, a first positioning part is provided on the back plate, and a second positioning part is provided on the bracket, with the first positioning part and the second positioning part being positioned and engaged.

[0050] In the above technical solution, a first positioning part and a second positioning part are respectively provided on the back plate and the bracket. The bracket can be positioned on the back plate through the first positioning part and the second positioning part, which facilitates the subsequent connection and fixation of the back plate and the bracket and improves the assembly efficiency.

[0051] In some embodiments, one of the first positioning part and the second positioning part is formed with a positioning boss and the other is formed with a positioning groove, and the positioning boss is engaged in the positioning groove.

[0052] In the above technical solution, the first positioning part and the second positioning part are respectively formed as a positioning boss and a positioning groove, which can simplify the positioning structure of the back plate and the bracket, facilitate processing and manufacturing, and reduce production difficulty.

[0053] In some embodiments, the back plate has outwardly protruding lugs on both sides of the third direction, a first positioning portion is formed on the lugs, the bracket extends along the third direction, and a second positioning portion is formed at both ends of the bracket in the third direction.

[0054] In the above technical solution, the back plate has outwardly protruding lugs on both sides of the third-side upward direction, and the first positioning part is formed on the lugs. In this way, the first positioning part can be arranged around the heat exchange plate and heat exchange tube, so that the connection structure between the first positioning part and the heat exchange tube or the back plate and the heat exchange plate does not interfere. In addition, the bracket can also play a role in structural reinforcement of the lugs. The lugs and the two ends of the bracket can together form the connection structure between the box and the external structure, which facilitates the fixing of the battery.

[0055] Secondly, embodiments of this application provide a housing comprising a first portion having a receiving cavity open on one side; and a second portion covering the open side of the receiving cavity, the second portion being a heat exchange element according to the first aspect of this application.

[0056] In the above technical solution, since the second part of the housing is the aforementioned heat exchanger, and the heat exchanger includes a heat exchange plate, a heat exchange tube, and a back plate arranged sequentially from the inside to the outside, the heat exchanger can not only replace a part of the housing, reducing the number of battery components and lowering costs, but also the heat exchanger structure with the heat exchange tube connected to the heat exchange plate has a high thermal conductivity and good heat conduction effect, which can improve the heat exchange efficiency between the heat exchanger and the battery cells. In addition, the heat exchanger includes a heat exchange tube, which, compared with a stamped flow channel plate, has a uniform flow rate, low pressure drop, and light weight, which can improve the energy density of the battery.

[0057] Thirdly, embodiments of this application provide a battery that includes a housing according to the second aspect of this application.

[0058] In the above technical solution, since the battery is equipped with the aforementioned housing, and since the second part of the housing is a heat exchange component, the heat exchange efficiency between the heat exchange component and the battery cell can be improved. Moreover, compared with the stamped flow channel plate, the heat exchange tube has a more uniform flow rate, a smaller pressure drop, and is lighter in weight, which can improve the energy density of the battery.

[0059] Fourthly, embodiments of this application provide an electrical device including a battery according to a third aspect of this application.

[0060] In the above technical solution, the overall performance of the electrical equipment is improved by incorporating the aforementioned battery.

[0061] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0062] Figure 1 is a schematic diagram of a vehicle according to an embodiment of this application;

[0063] Figure 2 is an exploded view of a battery according to an embodiment of this application;

[0064] Figure 3 is an exploded view of a battery according to an embodiment of this application from another angle;

[0065] Figure 4 is a schematic diagram of a heat exchanger according to an embodiment of this application;

[0066] Figure 5 is an exploded view of a heat exchanger according to an embodiment of this application;

[0067] Figure 6 is a schematic diagram of the back plate, heat exchange tube and current collector of the heat exchanger according to an embodiment of the present application;

[0068] Figure 7 is a schematic diagram of the heat exchange tube and the current collector of the heat exchanger according to an embodiment of the present application;

[0069] Figure 8 is an enlarged view of point A circled in Figure 7;

[0070] Figure 9 is a cross-sectional view of the heat exchanger's collector according to an embodiment of this application;

[0071] Figure 10 is a schematic diagram of the heat exchange tube and the current collector of the heat exchanger according to an embodiment of the present application from another angle;

[0072] Figure 11 is an enlarged view of point B circled in Figure 10;

[0073] Figure 12 is a schematic diagram of the heat exchange tube and the current collector of the heat exchanger according to an embodiment of the present application from another angle;

[0074] Figure 13 is a schematic diagram of the back plate of the heat exchanger according to an embodiment of this application;

[0075] Figure 14 is a schematic diagram of the support for the heat exchanger according to an embodiment of this application.

[0076] Reference numerals: 1. Electrical equipment; 1000. Battery; 2000. Controller; 3000. Motor; 100. Housing; 10. First part; 101. Receiving cavity; 20. Heat exchanger; 21. Heat exchange plate; 211. Overflow groove; 212. Flanged edge; 22. Back plate; 221. Reinforcing rib; 222. First positioning part; 223. Lug; 23. Heat exchange tube; 231. Straight pipe section; 232. Bending section; 24. Current collector; 2401. Manifold; 2402. Diverter; 2403. Liquid inlet; 2404. Liquid outlet; 2405. Insulation cavity; 241. Current collector body; 242. End cap; 243. Partition; 25. Liquid inlet connector; 26. Liquid outlet connector; 27. Bracket; 271. Reinforcing rib; 272, Second positioning part; 2721, Positioning groove; 2722, First protrusion; 2723, Second protrusion; 28, Welding gasket; 300, Battery cell. Detailed Implementation

[0077] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0078] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0079] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0080] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0081] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0082] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two).

[0083] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0084] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0085] Currently, judging from market trends, the application of power batteries is becoming increasingly widespread. Power batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of power battery applications, market demand is also constantly increasing.

[0086] It is understandable that the temperature environment inside a battery is affected by external weather conditions. The individual battery cells need to operate within a certain temperature range. When the internal temperature exceeds or falls below this range, the battery's stability and performance will be significantly affected. For example, in hot weather, the battery needs to cool down the individual cells to maintain the required internal temperature; in cold weather, the battery needs to heat up the individual cells to keep the internal temperature within the necessary range.

[0087] In related technologies, batteries typically incorporate heat exchange structures to dissipate heat from individual cells and increase their temperature. However, heat exchange components using heat exchange tubes are often located on the outside of the housing, connected to the housing via adhesive. During heat transfer, heat is first transferred to the adhesive layer, then to the housing, and finally to the individual cells. In this process, the adhesive has a low thermal conductivity, resulting in poor heat transfer and consequently, poor thermal management performance of the heat exchange components. Furthermore, heat exchange components in related technologies can also be stamped parts, where flow channels are formed by stamping on a plate. However, with stamped plates, the flow along these channels results in numerous branches with varying channel lengths. This leads to different flow resistances in each branch and uneven flow distribution across multiple branches. Additionally, when multiple branches converge, the channel cross-section narrows, causing a concentrated increase in pressure drop.

[0088] Based on the above considerations, in order to improve the thermal management performance of the heat exchanger, reduce the pressure drop in the heat exchange channel, and make the flow distribution in the channel uniform, this application proposes a heat exchanger used in a battery housing, which includes a heat exchange plate, a back plate, and heat exchange tubes. The back plate is located on one side of the heat exchange plate in a first direction and is connected to the heat exchange plate. The first direction is the thickness direction of the heat exchange plate. The heat exchange tubes are located between the heat exchange plate and the back plate and are fixedly connected to the heat exchange plate and / or the back plate. Thus, the heat exchanger can not only replace part of the housing, reducing the number of battery components and reducing costs, but also allow the heat exchange tubes to directly exchange heat with the battery cells through the heat exchange plate. The heat exchange tubes have high thermal conductivity and good heat conduction effect, which can improve the heat exchange efficiency between the heat exchanger and the battery cells. In addition, the heat exchanger includes heat exchange tubes, which, compared with stamped flow channel plates, have uniform flow, low pressure drop, and are lightweight, which can improve the energy density of the battery.

[0089] The heat exchanger disclosed in this application can be used in electrical devices that use batteries as a power source or in various energy storage systems that use batteries as energy storage elements. Electrical devices can be, but are not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0090] For ease of explanation, the following embodiments use a vehicle as an example to describe in detail the structure of the electrical equipment 1, battery 1000, housing 100 and heat exchanger 20 of this application.

[0091] Please refer to Figure 1, which is a schematic diagram of the structure of an electrical device 1 as a vehicle according to some embodiments of this application. The vehicle can be a gasoline vehicle, a natural gas vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. The vehicle is equipped with a battery 1000, which can be located at the bottom, front, or rear of the vehicle. The battery 1000 can be used to power the vehicle; for example, the battery 1000 can serve as the vehicle's operating power source. The vehicle may also include a controller 2000 and a motor 3000. The controller 2000 controls the battery 1000 to supply power to the motor 3000, for example, to meet the power needs of the vehicle during starting, navigation, and driving.

[0092] In some embodiments of this application, the battery 1000 can not only serve as the operating power source for the vehicle, but also as the driving power source for the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0093] In some embodiments of this application, the battery 1000 can not only serve as the operating power source for the vehicle, but also as the driving power source for the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0094] Referring to Figures 2 and 3, Figure 2 is an exploded view of a battery 1000 according to some embodiments of the present application, and Figure 3 is an exploded view of a battery 1000 according to another angle according to an embodiment of the present application. The battery 1000 includes a housing 100 and a battery cell 300. The housing 100 has a receiving cavity 101, and the battery cell 300 is received in the receiving cavity 101 of the housing 100.

[0095] The housing 100 provides a space for accommodating the battery cell 300, and can adopt various structures. In some embodiments, the housing 100 may include a first part 10 and a second part, which overlap each other, and together define a space for accommodating the battery cell 300. The second part may be a hollow structure with one open end, and the first part 10 may be a plate-like structure, with the first part 10 covering the open side of the second part so that the first part 10 and the second part together define the space; alternatively, the first part 10 and the second part may both be hollow structures with one open side, with the open side of the first part 10 covering the open side of the second part. Of course, the housing 100 formed by the first part 10 and the second part can be of various shapes, such as a cylinder, a cuboid, etc.

[0096] In some embodiments, the enclosure 100 further includes a bottom protective plate, which is disposed on the lower side of the enclosure body to further enhance the load-bearing strength and impact resistance of the bottom of the enclosure body. The bottom plate can also be made of various materials, including but not limited to: copper, iron, aluminum, stainless steel, aluminum alloy, etc.

[0097] In battery 1000, there can be multiple battery cells 300, which can be connected in series, parallel, or in a mixed manner. A mixed connection means that multiple battery cells 300 are connected in both series and parallel configurations. Multiple battery cells 300 can be directly connected in series, parallel, or in a mixed manner, and then the entire assembly of the multiple battery cells 300 is housed within housing 100. Alternatively, battery 1000 can also be composed of multiple battery cells 300 first connected in series, parallel, or in a mixed manner to form battery modules, and then these modules are connected in series, parallel, or in a mixed manner to form a whole, which is also housed within housing 100. Battery 1000 may also include other structures; for example, it may include a busbar component for electrical connection between the multiple battery cells 300.

[0098] Each battery cell 300 can be a secondary battery 1000 or a primary battery 1000; it can also be a lithium-sulfur battery 1000, a sodium-ion battery 1000, or a magnesium-ion battery 1000, but is not limited to these. The battery cell 300 can be cylindrical, flat, cuboid, or other shapes.

[0099] In some embodiments of the battery 1000 of this application, the first part 10 of the housing 100 is a hollow structure with one end open, and the second part is a plate-like structure. The second part is the heat exchanger 20 of the first aspect embodiment of this application. The heat exchanger 20, formed as the second part of the housing 100, provides heat exchange for multiple battery cells 300. In some embodiments, the heat exchanger 20 may include a heat exchange tube 23 and a current collector 24, wherein the heat exchange tube 23 is connected to the current collector 24. The heat exchange tube 23 may be a flat tube, a round tube, a harmonica tube, or other shaped tube, and the current collector 24 may be a rectangular tube or a round tube, etc.

[0100] The heat exchanger 20 according to an embodiment of the first aspect of this application is described below with reference to Figures 4-13. Figure 4 is a schematic diagram of the heat exchanger 20 according to an embodiment of this application, and Figure 5 is an exploded view of the heat exchanger 20 according to an embodiment of this application.

[0101] This application provides a heat exchanger 20, as shown in Figures 4 and 5. The heat exchanger 20 is used in the housing 100 of the battery 1000. The heat exchanger 20 includes a heat exchange plate 21, a back plate 22, and a heat exchange tube 23. The back plate 22 is disposed on one side of the heat exchange plate 21 in a first direction Z and is connected to the heat exchange plate 21. The first direction Z is the thickness direction of the heat exchange plate 21. The heat exchange tube 23 is disposed between the heat exchange plate 21 and the back plate 22 and is fixedly connected to the heat exchange plate 21 and / or the back plate 22.

[0102] The heat exchanger 20 is used in the housing 100 of the battery 1000, meaning the heat exchanger 20 is formed as part of the housing 100. For example, the housing 100 includes a first part 10 and a second part. The first part 10 can be formed as an empty housing structure with an open top, and the heat exchanger 20 is formed as the second part and covers the upper opening of the first part 10. Alternatively, the first part 10 can be formed as an empty housing structure with an open bottom, and the heat exchanger 20 is formed as the second part and covers the bottom opening of the first part 10. In this way, by replacing a portion of the housing 100 with the heat exchanger 20, the number of components in the battery 1000 can be reduced, the overall weight of the battery 1000 can be reduced, costs can be lowered, and the energy density of the battery 1000 can be increased.

[0103] The heat exchange plate 21 and the back plate 22 of the heat exchanger 20 are arranged sequentially in the first direction Z. The heat exchange tube 23 is sandwiched between the heat exchange plate 21 and the back plate 22. The heat exchange tube 23 can be fixedly connected only to the heat exchange plate 21, or it can be fixedly connected only to the back plate 22, or it can be fixedly connected to both the heat exchange plate 21 and the back plate 22 at the same time.

[0104] The heat exchange plate 21 is arranged on the side of the heat exchange tube 23 facing the receiving cavity 101 of the housing 100. That is, the surface of the heat exchange plate 21 facing away from the heat exchange tube 23 is a heat exchange surface for contacting and exchanging heat with the battery cell 300. The heat exchange tube 23 is located between the heat exchange plate 21 and the back plate 22, and the heat exchange tube 23 is connected to the heat exchange plate 21. In this way, the heat of the heat exchange tube 23 can be directly exchanged with the battery cell 300 through the heat exchange plate 21. Since both the heat exchange tube 23 and the heat exchange plate 21 are metal parts, they have high thermal conductivity and good heat transfer effect, thereby improving the thermal management effect of the heat exchange component 20 on multiple battery cells 300.

[0105] Since the heat exchanger 20 includes a heat exchange tube 23, which defines a heat exchange flow channel, the pressure drop of the heat exchange fluid flowing within the heat exchange tube 23 is smaller and the flow distribution is more uniform compared to a stamped plate. Furthermore, by sandwiching the heat exchange tube 23 between the heat exchange plate 21 and the back plate 22, with the back plate 22 positioned on the outside, the back plate 22 protects the heat exchange tube 23, reducing the probability of external objects colliding with it and extending its service life. Moreover, because the heat exchanger 20 has a three-layer structure consisting of the heat exchange plate 21, the heat exchange tube 23, and the back plate 22, its overall structural strength is higher, which improves the overall structural strength of the housing 100.

[0106] In the above technical solution, since the heat exchanger 20 is directly used in the housing 100 of the battery 1000 and includes the heat exchange plate 21, heat exchange tube 23 and back plate 22 arranged sequentially from the inside to the outside, the heat exchanger 20 can not only replace a part of the housing 100, reduce the number of parts of the battery 1000 and reduce costs, but also the heat exchange tube 23 is connected to the heat exchange plate 21, has a high thermal conductivity and good heat conduction effect, which can improve the heat exchange efficiency between the heat exchanger 20 and the battery cell 300. In addition, the heat exchanger 20 includes the heat exchange tube 23. Compared with the stamped flow channel plate, the heat exchange tube 23 has a uniform flow rate, low pressure drop and light weight, which can improve the energy density of the battery 1000.

[0107] The specific structure of the heat exchange plate 21 of the heat exchanger 20 according to the first aspect embodiment of this application will be described below with reference to FIG5.

[0108] In some embodiments of this application, referring to FIG5, an anti-overflow groove 211 is formed on the side surface of the heat exchange plate 21 facing away from the heat exchange tube 23. The bottom wall and / or side wall of the anti-overflow groove 211 are adapted to be bonded to a plurality of battery cells 300.

[0109] The surface of the heat exchange plate 21 facing away from the heat exchange tube 23 is the surface of the inner wall of the receiving cavity 101 of the heat exchange plate 21. The anti-overflow groove 211 on the heat exchange plate 21 can be formed by stamping, or by cutting a groove in the heat exchange plate 21, or by setting anti-overflow ribs on the surface of the heat exchange plate 21. The anti-overflow ribs extend in a ring along the circumference of the heat exchange plate 21, and the anti-overflow ribs enclose the anti-overflow groove 211.

[0110] When multiple battery cells 300 are installed inside the housing 100, they can be placed into the overflow prevention groove 211 of the heat exchange plate 21. The heat exchange plate 21 is bonded to the multiple battery cells 300. When the heat exchange plate 21 is bonded to the multiple battery cells 300, the multiple battery cells 300 can be bonded only to the bottom wall of the overflow prevention groove 211, only to the side wall of the overflow prevention groove 211, or simultaneously to both the bottom wall and the side wall of the overflow prevention groove 211. The heat exchange plate 21 and the multiple battery cells 300 can be bonded together using thermally conductive structural adhesive. Thus, the thermally conductive structural adhesive not only fixes the multiple battery cells 300 to the heat exchange plate 21, but also plays a role in heat conduction.

[0111] By setting an anti-overflow groove 211, multiple battery cells 300 are placed inside the anti-overflow groove 211. When they are bonded together by thermally conductive structural adhesive, the anti-overflow groove 211 can contain the thermally conductive structural adhesive and prevent adhesive overflow.

[0112] In the above technical solution, since an anti-overflow groove 211 is provided on one side surface of the heat exchange plate 21, the anti-overflow groove 211 can effectively reduce the probability of glue overflow when the battery cell 300 is bonded to the heat exchange plate 21.

[0113] In some embodiments of this application, referring to FIG5, the overflow groove 211 is formed by a portion of the heat exchange plate 21 recessed toward the back plate 22.

[0114] The heat exchange plate 21 can be an aluminum plate. Aluminum plates have a high thermal conductivity and good heat conduction effect, which can improve the heat exchange efficiency between the heat exchange component 20 and the battery cell 300. In addition, when the heat exchange plate 21 is an aluminum plate and the heat exchange tube 23 is an aluminum tube, the heat exchange plate 21 and the heat exchange tube 23 can be easily connected by welding, which can improve the assembly efficiency and heat conduction effect.

[0115] The heat exchange plate 21 can also be made of stainless steel. Stainless steel has a high thermal conductivity, good heat conduction effect, and high strength. This can not only improve the heat exchange efficiency between the heat exchange component 20 and the battery cell 300, but also improve the structural strength of the heat exchange component 20.

[0116] For example, the overflow groove 211 is stamped onto the heat exchange plate 21. Stamping refers to a processing method in which external force is applied to sheet metal, strip, pipe, and profile by a press and a die to cause plastic deformation or separation, thereby obtaining a workpiece (stamped part) of the required shape and size. By stamping the overflow groove 211 onto the heat exchange plate 21, the processing technology of the overflow groove 211 can be simplified and the processing difficulty reduced. On the other hand, the thickness of the heat exchange plate 21 can be reduced, thus reducing costs. Furthermore, by stamping the overflow groove 211, the structural strength of the heat exchange plate 21 can be increased, thereby enhancing the overall strength of the heat exchange component 20.

[0117] In the above technical solution, since the anti-overflow groove 211 is formed by a portion of the heat exchange plate 21 recessed toward the back plate 22, the processing technology of the anti-overflow groove 211 can be simplified, the processing difficulty can be reduced, the thickness of the heat exchange plate 21 can be reduced, the cost can be reduced, and the structural rigidity of the heat exchange plate 21 can be increased, thereby enhancing the overall strength of the heat exchange component 20.

[0118] In some embodiments of this application, referring to FIG5, the periphery of the heat exchange plate 21 is provided with a flange 212 extending outward from the center of the heat exchange plate 21, and the flange 212 extends in a ring shape along the circumference of the anti-overflow groove 211.

[0119] The heat exchange plate 21 can be a rectangular plate. The heat exchange plate 21 is formed by stamping to form an anti-overflow groove 211. The anti-overflow groove 211 is a rectangular groove. After the anti-overflow groove 211 is formed by stamping, the unstamped part of the periphery of the heat exchange plate 21 is formed into a flange 212. The flange 212 is a rectangular ring.

[0120] When the heat exchanger 20 is connected to the first part 10 of the housing 100 as the second part of the housing 100, the flange 212 can cooperate with the first part 10 to achieve a sealed connection between the first part 10 and the second part.

[0121] Specifically, the first part 10 has a receiving cavity 101 with an opening on one side in the first direction Z. The heat exchanger 20 serves as a second part, covering the open side of the first part 10. Furthermore, a sealing gasket can be provided between the flange 212 and the first part 10. The sealing gasket extends in an annular shape along the circumference of the heat exchanger 20 and seals against the flange 212 and the first part 10. Thus, the flange 212 can provide assembly space for the sealing gasket, and the sealing gasket can seal the gap between the flange 212 and the first part 10, improving the overall sealing performance of the housing 100.

[0122] Furthermore, at least one of the first part 10 and the flange 212 may be provided with a sealing groove. In the first direction Z, one end of the sealing gasket may be disposed in the sealing groove, and the other end of the sealing gasket may abut against the other of the first part 10 and the flange 212. Thus, the sealing groove can be used to position and fix the sealing gasket, prevent the sealing gasket from shifting, and thereby improve the sealing performance of the sealing gasket.

[0123] In addition, the flange 212 may be provided with a first fastening hole, and there may be multiple first fastening holes. The multiple first fastening holes are arranged at intervals along the circumference of the flange 212. The first part 10 is formed with multiple second fastening holes. The multiple second fastening holes are arranged at intervals along the circumference of the flange 212. The multiple first fastening holes and the multiple second fastening holes correspond one-to-one and are aligned in the first direction Z. The fastening connector passes through the second fastening holes and the first fastening holes in sequence to realize the fastening connection between the heat exchanger 20 and the first part 10.

[0124] Furthermore, the flange 212 and the side wall of the overflow groove 211 can be connected by an arc, which can reduce stress concentration at the connection point between the flange 212 and the side wall of the overflow groove 211 and improve the structural strength of the heat exchange plate 21.

[0125] In the above technical solution, since the heat exchange plate 21 has an annular flange 212 around its periphery, the flange 212 can facilitate the sealing fit between the heat exchange component 20 and the first part 10 of the housing 100, and facilitate the positioning and assembly of the sealing gasket between the heat exchange component 20 and the first part 10 of the housing 100, so as to improve the sealing performance of the housing 100.

[0126] In some embodiments of this application, the depth of the anti-overflow groove 211 is greater than or equal to 7 mm, and / or the width of the flange 212 is greater than or equal to 10 mm.

[0127] In the first direction Z, the depth of the anti-overflow groove 211 can be 7mm, 8mm, 10mm, 15mm, 20mm, 30mm, 50mm or 70mm, etc.

[0128] Furthermore, in the first direction Z, the depth of the anti-overflow groove 211 can be greater than or equal to 20 mm and less than or equal to 30 mm. For example, the depth of the anti-overflow groove 211 can be 21 mm, 22 mm, 23 mm, 24 mm, 25 mm, 26 mm, 27 mm, 28 mm, or 29 mm, etc. By setting the depth of the anti-overflow groove 211 between 20 mm and 30 mm, on the one hand, the depth of the anti-overflow groove 211 can be increased, effectively reducing the probability of glue overflow when the battery cell 300 is bonded to the heat exchange plate 21. On the other hand, when the anti-overflow groove 211 is formed by stamping, the probability of excessive stretching, severe deformation, insufficient wall thickness, or even breakage in local positions of the heat exchange plate 21 can be reduced, thereby reducing the processing difficulty and improving the finished product quality of the heat exchange plate 21.

[0129] In a plane perpendicular to the first direction Z, for example, in the second direction Y or the third direction X, the width of the flange 212 is greater than or equal to 10 mm. For example, the width of the flange 212 can be 10 mm, 12 mm, 14 mm, 16 mm, 18 mm, 20 mm, 25 mm, 30 mm, 35 mm, or 40 mm. It should be noted that when the heat exchanger 20 is used in the housing 100 of the battery 1000, a connection structure and a sealing structure need to be arranged on the flange 212 to achieve the connection and sealing between the heat exchanger 20 and the first part 10 of the housing 100. Therefore, the width of the flange 212 can be set according to the required connection structure and sealing structure to improve the connection reliability and sealing performance between the heat exchanger 20 and the first part 10.

[0130] In the above technical solution, the depth of the anti-overflow groove 211 is greater than or equal to 7mm, which can not only reduce the probability of glue overflow when the battery cell 300 is bonded to the heat exchange plate 21, but also reduce the processing difficulty of the heat exchange plate 21 and improve the finished quality of the heat exchange plate 21; the width of the flange 212 is greater than or equal to 10mm, which can increase the connection area between the heat exchange component 20 and the first part 10 of the housing 100, and improve the connection reliability and sealing performance between the heat exchange component 20 and the first part 10.

[0131] The specific structure of the heat exchange tube 23 and back plate 22 of the heat exchanger 20 according to the first aspect embodiment of the present application is described below with reference to FIG. 6. FIG. 6 is a schematic diagram of the back plate 22, heat exchange tube 23 and current collector 24 of the heat exchanger 20 according to the embodiment of the present application.

[0132] In some embodiments of this application, one of the back plate 22 and the heat exchange plate 21 is formed with a reinforcing rib 221 protruding toward the heat exchange tube 23, and the reinforcing rib 221 is fixedly connected to the other of the back plate 22 and the heat exchange plate 21.

[0133] For example, a reinforcing rib 221 is formed on the back plate 22, protruding towards the heat exchange plate 21 in the first direction Z, and the reinforcing rib 221 is fixedly connected to the heat exchange plate 21. In this embodiment, by providing the reinforcing rib 221 on the back plate 22, not only can the structural strength of the back plate 22 be increased, but the back plate 22 can also be fixedly connected to the heat exchange plate 21 through the reinforcing rib 221, thereby enhancing the integrity among the back plate 22, the heat exchange plate 21, and the heat exchange tube 23, and further improving the overall structural strength of the heat exchange component 20.

[0134] For example, a reinforcing rib 221 protruding towards the back plate 22 is formed on the heat exchange plate 21, and the reinforcing rib 221 is fixedly connected to the back plate 22. In this embodiment, by providing the reinforcing rib 221 on the heat exchange plate 21, not only can the structural strength of the heat exchange plate 21 be increased, but the heat exchange plate 21 can also be fixedly connected to the back plate 22 through the reinforcing rib 221, thereby enhancing the integrity among the back plate 22, the heat exchange plate 21, and the heat exchange tube 23, and further improving the overall structural strength of the heat exchange component 20.

[0135] For example, a first reinforcing rib 221 is formed on the back plate 22, protruding toward the heat exchange plate 21 along the first direction Z. The first reinforcing rib 221 is fixedly connected to the heat exchange plate 21. A second reinforcing rib 221 is formed on the heat exchange plate 21, protruding toward the back plate 22. The second reinforcing rib 221 is fixedly connected to the back plate 22.

[0136] In one example, the reinforcing rib 221 can be in the shape of a protrusion; the reinforcing rib 221 can also extend in a long strip shape along a certain direction, for example, the reinforcing rib 221 can extend along a straight line and / or a curve; of course, the reinforcing rib 221 can also be annular, for example, the reinforcing rib 221 can extend into a circular ring, a rectangular ring, etc. This application does not limit this, as long as it can enhance the structural strength of the heat exchange plate 21 or the back plate 22 and achieve a connection between the heat exchange plate 21 and the back plate 22. When there are multiple reinforcing ribs 221, the multiple reinforcing ribs 221 can be arranged in an array; of course, the position of the multiple reinforcing ribs 221 can also be specifically set according to requirements.

[0137] Furthermore, the reinforcing rib 221 can be a raised rib added to the surface of the heat exchange plate 21 or the back plate 22, thereby further enhancing the structural strength of the heat exchange plate 21 and the back plate 22. Alternatively, the reinforcing rib 221 can also be formed by protrusions from a portion of the heat exchange plate 21 or the back plate 22. For example, the reinforcing rib 221 can be directly stamped onto the heat exchange plate 21 or the back plate 22, thereby reducing weight and lowering costs.

[0138] In the above technical solution, by setting reinforcing ribs 221 on the back plate 22 or heat exchange plate 21, and connecting the heat exchange plate 21 and the other one of the back plate 22 through the reinforcing ribs 221, not only can the structural strength of the back plate 22 or heat exchange plate 21 be increased, but also the integrity among the back plate 22, heat exchange plate 21 and heat exchange tube 23 can be enhanced, thereby further improving the overall structural strength of the heat exchange component 20.

[0139] The following description uses the example of reinforcing rib 221 being disposed on the back plate 22 to illustrate the embodiments of this application. Those skilled in the art will obviously understand the technical solution of reinforcing rib 221 being disposed on the heat exchange plate 21 after reading the following technical solution of this application, and will not elaborate further.

[0140] In some embodiments of this application, there are multiple reinforcing ribs 221, which extend along the second direction Y and are spaced apart on the third direction X. At least a portion of the heat exchange tube 23 is arranged between two adjacent reinforcing ribs 221, and the first direction Z, the second direction Y and the third direction X intersect each other.

[0141] For example, the number of reinforcing ribs 221 can be two, three, four, five, eight, ten, fifteen, or twenty, etc. The reinforcing ribs 221 can extend in a straight line or a curve in the second direction Y. The spacing between the multiple reinforcing ribs 221 in the third direction X can be equal or unequal, and the spacing between two adjacent reinforcing ribs 221 can always be equal or gradually change. For example, in a specific example, the multiple reinforcing ribs 221 extend in a straight line in the second direction Y, and the multiple reinforcing ribs 221 are evenly spaced in the third direction X.

[0142] In a specific example, stiffeners 221 are provided on the back plate 22. By arranging multiple stiffeners 221 on the back plate 22, the structural strength of the back plate 22 can be further improved. The multiple stiffeners 221 extend along the second direction Y and are spaced apart in the third direction X.

[0143] A portion of the heat exchange tube 23 can be arranged between adjacent reinforcing ribs 221, while another portion of the heat exchange tube 23 can be arranged on the outside of the multiple reinforcing ribs 221, that is, on the side of the multiple reinforcing ribs 221 facing the periphery of the back plate 22. Alternatively, all of the heat exchange tubes 23 can be arranged between adjacent reinforcing ribs 221.

[0144] Furthermore, adjacent reinforcing ribs 221 are fitted together to define clearance grooves. In some specific examples, each clearance groove can contain a heat exchange tube 23, while in other examples, only a portion of the clearance grooves may contain heat exchange tubes 23. When a heat exchange tube 23 is provided in a clearance groove, that clearance groove may contain only one heat exchange tube 23 or multiple heat exchange tubes 23. By arranging the heat exchange tubes 23 between adjacent reinforcing ribs 221, not only can the reinforcing ribs 221 be used to strengthen the structural strength of the back plate 22 and the overall structural strength of the heat exchange component 20, but the heat exchange tubes 23 can also be accommodated within the clearance grooves defined between adjacent reinforcing ribs 221. This reduces the thickness of the heat exchange component 20 in the first direction Z, prevents interference between the reinforcing ribs 221 and the heat exchange tubes 23, and makes the structural layout of the heat exchange component 20 more compact, reducing space occupation.

[0145] The phrase "the first direction Z, the second direction Y, and the third direction X intersect each other" is intended to illustrate that the first direction Z, the second direction Y, and the third direction X can be arranged perpendicularly to each other, or they can be arranged in a non-perpendicular manner with only intersections. For example, any two of the first direction Z, the second direction Y, and the third direction X can be arranged at angles of 30°, 60°, 80°, 120°, 150°, or 170°. For example, as shown in Figure 5, the first direction Z is the thickness direction of the heat exchange plate 21, the second direction Y is the length direction of the heat exchange plate 21, the third direction X is the width direction of the heat exchange plate 21, the reinforcing ribs 221 extend along the length direction of the heat exchange plate 21, and multiple reinforcing ribs 221 are arranged at intervals along the width direction of the heat exchange plate 21.

[0146] In a specific example, the surface of the heat exchange tube 23 facing the heat exchange plate 21 is flush with the surface of the reinforcing rib 221 facing the heat exchange plate 21. This allows the heat exchange tube 23 and the reinforcing rib 221 to simultaneously adhere to the heat exchange plate 21. This not only facilitates the fixed connection between the reinforcing rib 221 and the heat exchange plate 21, but also ensures that the heat exchange tube 23 and the heat exchange plate 21 are in close contact, enabling heat transfer. Furthermore, the reinforcing rib 221 supports the heat exchange plate 21, reducing the pressure exerted by the heat exchange plate 21 on the heat exchange tube 23, protecting the heat exchange tube 23, and improving its reliability.

[0147] In the above technical solution, by setting multiple reinforcing ribs 221, the structural strength of the back plate 22 can be strengthened, the overall structural strength of the heat exchanger 20 can be strengthened, and the heat exchange tube 23 can be accommodated in the clearance groove defined between adjacent reinforcing ribs 221. This can reduce the thickness of the heat exchanger 20 in the first direction Z, so that there is no interference between the reinforcing ribs 221 and the heat exchange tube 23, making the structural layout of the heat exchanger 20 more compact, reducing space occupation, and the multiple reinforcing ribs 221 can protect the heat exchange tube 23.

[0148] In some embodiments of this application, referring to FIG6, the heat exchange tube 23 includes a plurality of straight pipe sections 231. The plurality of straight pipe sections 231 extend along the second direction Y and are arranged in the third direction X. The reinforcing ribs 221 are disposed between two adjacent straight pipe sections 231. The plurality of straight pipe sections 231 and the plurality of reinforcing ribs 221 are arranged alternately in the third direction X.

[0149] The number of straight pipe sections 231 in each heat exchange tube 23 can be two, three, four or more. In the second direction Y, the straight pipe sections 231 extend along a straight line parallel to the second direction Y. Reinforcing ribs 221 are provided between two adjacent straight pipe sections 231. There can be only one reinforcing rib 221 or multiple reinforcing ribs 221 between two adjacent straight pipe sections 231.

[0150] Furthermore, multiple straight pipe sections 231 and multiple reinforcing ribs 221 are alternately arranged in the third direction X. That is, a reinforcing rib 221 is arranged between two adjacent straight pipe sections 231, and a straight pipe section 231 is arranged between two adjacent reinforcing ribs 221. In this way, the multiple reinforcing ribs 221 arranged at intervals can not only achieve uniform support for the heat exchange plate 21 and protect the straight pipe sections 231 of the heat exchange tubes 23 arranged between the reinforcing ribs 221, but also further simplify the structure of the heat exchange tubes 23 and the back plate 22, resulting in a compact structure that facilitates the processing and forming of the back plate 22 and the heat exchange tubes 23.

[0151] In the above technical solution, by arranging multiple straight pipe sections 231 and multiple reinforcing ribs 221 alternately in the third direction X, the structure of the heat exchange tube 23 can be further simplified, the structure of the back plate 22 can be simplified, the structure is compact, and the processing and forming of the back plate 22 and the heat exchange tube 23 can be facilitated. In addition, multiple reinforcing ribs 221 can be used to protect the heat exchange tube 23.

[0152] In some embodiments of this application, the periphery of the heat exchange plate 21 is fixedly connected to the periphery of the back plate 22.

[0153] The periphery of the heat exchange plate 21 and the periphery of the back plate 22 can be welded, bonded, snapped, and / or fastened together.

[0154] Furthermore, the entire periphery of the heat exchange plate 21 can be bonded or welded to the entire periphery of the back plate 22.

[0155] By fixing the periphery of the heat exchange plate 21 to the periphery of the back plate 22, the overall integrity of the three components—heat exchange plate 21, back plate 22, and heat exchange tube 23—can be further enhanced, thereby improving the structural strength of the heat exchange component 20. Furthermore, connecting the periphery of the heat exchange plate 21 to the periphery of the back plate 22 allows the heat exchange tube 23 to be encapsulated between the back plate 22 and the heat exchange plate 21, reducing the probability of external impurities entering between the back plate 22 and the heat exchange plate 21, and mitigating the impact of external impurities on the heat exchange efficiency of the heat exchange tube 23.

[0156] In a specific example, the heat exchange plate 21 is recessed towards the back plate 22 to form an anti-overflow groove 211, and a flange 212 is formed around the periphery of the heat exchange plate 21. The back plate 22 is formed with a reinforcing rib 221 protruding towards the heat exchange plate 21. The reinforcing rib 221 is fixedly connected to the heat exchange plate 21, for example, the reinforcing rib 221 is welded to the heat exchange plate 21. A connecting edge protruding towards the heat exchange plate 21 is formed around the periphery of the back plate 22. The connecting edge is attached to and bonded or welded to the flange 212.

[0157] In the above technical solution, by fixing the periphery of the heat exchange plate 21 to the periphery of the back plate 22, the integrity between the three components of the heat exchange plate 21, the back plate 22 and the heat exchange tube 23 can be further enhanced, the structural strength of the heat exchange component 20 can be further improved, and the probability of external impurities entering between the back plate 22 and the heat exchange plate 21 can be reduced, thereby reducing the problem of external impurities affecting the heat exchange efficiency of the heat exchange tube 23.

[0158] In some embodiments of this application, there are multiple heat exchange tubes 23, which are arranged at intervals along a third direction X, and the third direction X intersects with the first direction Z.

[0159] For example, the number of heat exchange tubes 23 can be one, two, three or more, and the number of heat exchange tubes 23 can be designed according to the size of the battery 1000.

[0160] Specifically, a heat exchange channel is defined within the heat exchange tube 23 for the flow of heat exchange fluid. The shape of the heat exchange tube 23 can be various, such as a circular tube or a flat tube; at the same time, the shape of the heat exchange channel defined by the heat exchange tube 23 can also be various, such as a U-shaped heat exchange channel.

[0161] Furthermore, multiple heat exchange tubes 23 are arranged in parallel. For example, the inlet ends of multiple heat exchange tubes 23 are connected to the flow distribution cavity 2402 of the current collector 24, and the outlet ends of multiple heat exchange tubes 23 are all connected to the flow collection cavity 2401 of the current collector 24.

[0162] The multiple heat exchange tubes 23 can be arranged sequentially along a third direction X. Of course, the multiple heat exchange tubes 23 can also be arranged around each other, and further, the multiple heat exchange tubes 23 can be arranged around each other in the same plane.

[0163] In the above technical solution, by setting the heat exchanger 20 to include multiple heat exchange tubes 23, not only can the process complexity of the heat exchanger 20 be reduced and the production rate of the heat exchanger 20 be increased, but the fluid pressure drop in a single heat exchange tube 23 can also be reduced, thereby improving heat exchange efficiency and enhancing temperature uniformity.

[0164] In some embodiments of this application, the heat exchange tube 23 includes a plurality of straight pipe sections 231 and at least one bent section 232. The plurality of straight pipe sections 231 extend along the second direction Y and are spaced apart on the third direction X. The plurality of straight pipe sections 231 are connected sequentially through the bent section 232. The first direction Z, the second direction Y and the third direction X intersect each other.

[0165] The number of straight pipe sections 231 can be two, three, four, five or more. By setting multiple straight pipe sections 231, the heat exchange area of ​​a single heat exchange tube 23 can be increased, thereby improving the heat exchange effect of a single heat exchange tube 23.

[0166] The straight pipe section 231 extends in a straight line in the second direction Y. The straight pipe section 231 extending in a straight line can simplify the structure of the heat exchange tube 23 and facilitate the processing and production of the heat exchange tube 23.

[0167] Furthermore, the straight pipe sections 231 connected in sequence are connected by a bend section 232. The bend section 232 can change the flow direction of the fluid in the heat exchange tube 23, so that the heat exchange fluid flows along a predetermined trajectory, thereby improving the heat exchange effect on the battery cell 300.

[0168] The bending section 232 can be arc-shaped, that is, the bending section 232 extends along an arc. Thus, the bending section 232 can change the flow direction of the fluid. The arc shape can reduce the flow resistance of the fluid and reduce the pressure drop, thereby increasing the flow rate of the fluid and further increasing the heat exchange efficiency of the heat exchange tube 23.

[0169] Furthermore, the bent tube can extend along a semi-circular arc; specifically, it can extend along a semi-circular arc in the second direction Y, away from the protrusion of the straight tube section 231. The angle between the inlet and outlet of the bent tube is 180°, and the flow directions at the outlet and inlet positions are opposite. This brings adjacent straight tube sections 231 closer together, making the entire heat exchange tube 23 more compact and reliable.

[0170] In a specific example, the heat exchange tube 23 is formed by bending a single tube. The bending of a single tube means that the heat exchange tube 23 can be formed by bending a single straight tube multiple times through processing techniques such as pressing and rolling. For example, a single straight tube can be bent at multiple preset positions to form a V-shape, U-shape, etc. at the bending position. The bending shape of the single tube can be designed according to the actual situation.

[0171] By setting the heat exchange tube 23 to be formed by bending a single tube, the number of welding points of the heat exchange component 20 can be reduced, thereby reducing the risk of leakage of the heat exchange component 20 and improving the reliability of the heat exchange component 20. At the same time, the operation process of bending a single tube is simpler than the manufacturing process of a plate structure, thereby significantly reducing the cost of the heat exchange component 20.

[0172] In a specific example, the heat exchange tube 23 can be a flat tube or a harmonica tube. Here, a flat tube refers to a tube whose cross-section along the direction perpendicular to its extension is not circular, such as having an elliptical or rectangular cross-section; a harmonica tube is a type of flat tube.

[0173] Specifically, the flat tube has flat upper and lower surfaces and a large contact area, which can increase the heat transfer area of ​​the heat exchanger 20 and thus increase the heat exchange effect of the heat exchanger 20. At the same time, the flat tube is relatively light in weight while having the same bending and torsional strength. Therefore, using the flat tube as the heat exchange tube 23 can also reduce the overall weight of the heat exchanger 20 and thus increase the energy density of the battery 1000.

[0174] Furthermore, the flat tube can have a single heat exchange channel inside, or it can have multiple heat exchange channels formed by internal partitions. For example, both the flat tube and the harmonica tube can have partition ribs inside, which can extend along the length of the flat tube or harmonica tube and divide the heat exchange channel inside the flat tube or harmonica tube into multiple sub-channels.

[0175] In the above technical solution, since the heat exchange tube 23 includes multiple straight tube sections 231 and at least one bent section 232, the structure of the heat exchange tube 23 can be simplified, the processing and manufacturing cost of the heat exchange tube 23 can be reduced, and the heat exchange efficiency of the heat exchange tube 23 can be improved.

[0176] In some embodiments of this application, the heat exchange tube 23 is welded or bonded to the heat exchange plate 21, and the heat exchange plate 21 is welded to the back plate 22.

[0177] In a specific example, the heat exchange tube 23 can be an aluminum tube or a stainless steel tube, thereby improving the heat exchange performance and structural strength of the heat exchange tube 23. The heat exchange plate 21 can be an aluminum plate or a stainless steel plate, thereby improving the structural strength and heat exchange effect of the heat exchange plate 21. The back plate 22 can be an aluminum plate or a stainless steel plate, thereby improving the heat exchange effect and structural strength of the back plate 22.

[0178] The heat exchange tube 23 and the heat exchange plate 21 are connected by welding, which can improve the structural strength of the connection position between the heat exchange tube 23 and the heat exchange plate 21, and also improve the heat transfer efficiency between the heat exchange tube 23 and the heat exchange plate 21.

[0179] The heat exchange tube 23 and the heat exchange plate 21 are connected by adhesive bonding, which makes the connection between the heat exchange tube 23 and the heat exchange plate 21 convenient and improves the assembly and connection efficiency between the heat exchange tube 23 and the heat exchange plate 21.

[0180] It should be noted that when both the heat exchange plate 21 and the heat exchange tube 23 are made of aluminum, such as ternary or tetra-series aluminum, the heat exchange plate 21 and the heat exchange tube 23 can be connected by welding. When the heat exchange plate 21 and the heat exchange tube 23 are made of different materials, for example, one of the heat exchange plate 21 and the heat exchange tube 23 is made of steel and the other is made of aluminum, the heat exchange plate 21 and the heat exchange tube 23 can be connected by adhesive bonding due to the poor welding performance between steel and aluminum.

[0181] The heat exchange plate 21 and the back plate 22 are connected by welding, which can improve the connection strength between the heat exchange plate 21 and the back plate 22 and enhance the overall structural strength of the heat exchange component 20. In addition, the heat exchange tube 23 can also transfer heat to the heat exchange plate 21 through the back plate 22, thereby increasing the heat exchange area between the heat exchange tube 23 and the heat exchange plate 21 and further improving the heat exchange effect on the battery cell 300.

[0182] In the above technical solution, the heat exchange tube 23 is welded or bonded to the heat exchange plate 21, and the heat exchange plate 21 is welded to the back plate 22. This not only simplifies the connection structure between the heat exchange tube 23, the heat exchange plate 21 and the back plate 22 and improves the assembly efficiency of the heat exchange component 20, but also improves the connection strength between the heat exchange tube 23, the heat exchange plate 21 and the back plate 22 and enhances the structural strength of the heat exchange component 20.

[0183] The specific structure of the heat exchanger 20's collector 24 and heat exchange tube 23 is described below with reference to Figures 7-9. Figure 7 is a schematic diagram of the heat exchanger 20's heat exchange tube 23 and collector 24 according to an embodiment of the present application; Figure 8 is an enlarged view of point A circled in Figure 7; Figure 9 is a cross-sectional view of the heat exchanger 20's collector 24 according to an embodiment of the present application.

[0184] In some embodiments of this application, the heat exchanger 20 may further include a collector 24 having a confluence cavity 2401 and a branch cavity 2402, wherein the inlet of the heat exchange tube 23 is connected to the branch cavity 2402 and the outlet is connected to the confluence cavity 2401.

[0185] The collector 24 has multiple first interfaces and multiple second interfaces. The heat exchanger 20 includes multiple heat exchange tubes 23. The inlets of the multiple heat exchange tubes 23 correspond one-to-one with and are connected to the multiple first interfaces, and the outlets of the multiple heat exchange tubes 23 correspond one-to-one with and are connected to the multiple second interfaces. The flow distribution chamber 2402 of the collector 24 is also connected to an external liquid supply pipeline, and the flow collection chamber 2401 of the collector 24 is connected to an external liquid outlet pipeline.

[0186] When the battery 1000 is working, the total fluid in the external liquid supply pipeline enters the distribution chamber 2402 of the collector 24, and then flows into the heat exchange tubes 23 through multiple first interfaces. The heat exchange fluid in the heat exchange tubes 23 exchanges heat with the battery cell 300 through the heat exchange tubes 23, and then flows from the outlet of the heat exchange tubes 23 to the second interface and enters the manifold 2401, and finally flows to the liquid outlet pipeline.

[0187] In the above technical solution, by setting up a collector 24, the outlet and inlet of the heat exchange tube 23 are connected by the confluence chamber 2401 and the diversion chamber 2402 of the collector 24, respectively. The liquid inlet and outlet of the heat exchange element 20 can be realized through the collector 24, making the overall structure of the heat exchange element 20 compact.

[0188] In some embodiments of this application, the manifold 2401 and the branching 2402 are arranged along the thickness direction (first direction Z) of the heat exchange plate 21. The inlet end of the heat exchange tube 23 is bent toward one side of the thickness direction of the heat exchange plate 21 and connected to the collector 24. The outlet end of the heat exchange tube 23 is bent toward the other side of the thickness direction of the heat exchange plate 21 and connected to the collector 24.

[0189] In other words, the manifold 2401 and the branching 2402 are arranged at intervals along the first direction Z, and the inlet and outlet ends of the heat exchange tube 23 are bent toward the two sides of the first direction Z and connected to the collector 24.

[0190] It should be noted that since the manifold 2401 and the branching 2402 are arranged along the first direction Z, the first interface communicating with the branching 2402 and the second interface communicating with the manifold 2401 are not at the same height in the first direction Z. Therefore, after the heat exchange tube 23 extends meanderingly in the plane containing the second direction Y and the third direction X, at least one of the inlet and outlet ends of the heat exchange tube 23 cannot directly connect with the first and second interfaces. In this case, when the heat exchange tube 23 extends in the plane between the first and second interfaces, in order for the inlet end of the heat exchange tube 23 to be inserted into the first interface and the outlet end to be inserted into the second interface, the inlet and outlet ends of the heat exchange tube 23 need to be bent towards both sides in the first direction Z to achieve insertion and connection with the first and second interfaces of the collector 24.

[0191] In a specific example, the heat exchange tube 23 includes an inlet end, an outlet end, and a heat exchange body connected between the inlet end and the outlet end. Specifically, either the inlet end or the outlet end includes a straight portion and a bent portion. One end of the bent portion is connected to the heat exchange body, and the other end extends obliquely toward the collector 24 and toward one side in the first direction Z. The straight portion is connected to the other end of the bent portion toward the collector 24 and extends in a straight line in the second direction Y. The straight portion is used to connect to the collector 24.

[0192] Furthermore, the bent portion is connected to both the straight portion and the heat exchanger body via arc bends. Specifically, the bending radius at the connection point between the bent portion and the straight portion is greater than or equal to the thickness of the heat exchanger tube 23 in the first direction Z, and the bending radius at the connection point between the bent portion and the heat exchanger body is greater than or equal to the thickness of the heat exchanger tube 23 in the first direction Z. For example, if the thickness of the heat exchanger tube 23 in the first direction Z is 6 mm, the bending radius at the connection point between the bent portion and the straight portion is greater than or equal to 6 mm, and the bending radius at the connection point between the bent portion and the heat exchanger body is greater than or equal to 6 mm.

[0193] In a specific example, the inlet end of the heat exchange tube 23 is inserted into the first interface and welded to the current collector 24, and the outlet end of the heat exchange tube 23 is inserted into the second interface and welded to the current collector 24.

[0194] The length of the straight portion of either the inlet or outlet end of the heat exchange tube 23 in the second direction Y is greater than or equal to 1 mm. For example, the length of the straight portion of either the inlet or outlet end of the heat exchange tube 23 in the second direction Y can be 1 mm, 2 mm, 4 mm, 6 mm, 8 mm, 10 mm, 12 mm, 14 mm, 16 mm, or 20 mm.

[0195] Furthermore, the length of the straight portion of either the inlet or outlet end of the heat exchange tube 23 in the second direction Y is greater than or equal to 3 mm and less than or equal to 5 mm. For example, the length of the straight portion of either the inlet or outlet end of the heat exchange tube 23 is 3 mm, 3.5 mm, 4 mm, 4.5 mm, or 5 mm.

[0196] This allows for sufficient welding length between the straight section and the current collector 24, improving the welding quality of the welded connection between the straight section and the current collector 24.

[0197] In addition, since the heat exchanger 20 includes multiple heat exchange tubes 23, which are arranged at intervals along the third direction X, and the collector 24 extends along the third direction X, the flow distribution cavity 2402 and the flow collection cavity 2401 of the collector 24 are arranged along the first direction Z. At this time, the flow distribution cavity 2402 and the flow collection cavity 2401 also extend along the third direction X. In this way, in the third direction X, the flow distribution cavity 2402 and the flow collection cavity 2401 can both extend to the inlet and outlet ends of the multiple heat exchange tubes 23, so that the multiple heat exchange tubes 23 can be directly connected to the flow distribution cavity 2402 and the flow collection cavity 2401. This simplifies the connection structure between the heat exchange tubes 23 and the collector 24 and reduces the number of bends of the heat exchange tubes 23 to connect to the collector 24.

[0198] In the above technical solution, the manifold 2401 and the branching 2402 of the collector 24 are arranged at intervals along the first direction Z, which can facilitate the alignment of the manifold 2401 and the branching 2402 with the inlet and outlet ends of multiple heat exchange tubes 23 in the second direction Y. This facilitates the direct connection of multiple heat exchange tubes 23 with the branching 2402 and the manifold 2401. Since the inlet and outlet ends of the heat exchange tubes 23 are bent towards both sides in the first direction Z and then connected to the collector 24, the inlet and outlet ends of the heat exchange tubes 23 can be smoothly inserted and connected to the branching 2402 and the manifold 2401 of the collector 24, thus optimizing and compacting the connection structure between the heat exchange tubes 23 and the collector 24.

[0199] In some embodiments, the current collector 24 may also have a heat insulation cavity 2405, which is arranged between the flow distribution cavity 2402 and the flow collection cavity 2401.

[0200] The heat insulation cavity 2405 can separate the flow distribution cavity 2402 and the flow collection cavity 2401 to reduce the heat transfer between the fluid in the flow distribution cavity 2402 and the fluid in the flow collection cavity 2401, thereby improving the heat exchange performance of the heat exchanger 20.

[0201] In the above technical solution, by forming a heat insulation cavity 2405 in the current collector 24, the heat insulation cavity 2405 can be used to isolate the flow junction cavity 2401 and the flow branch cavity 2402, so that the fluids in the flow junction cavity 2401 and the flow branch cavity 2402 are insulated by the air in the heat insulation cavity 2405, thereby improving the heat exchange performance of the heat exchanger 20.

[0202] In some embodiments, the current collector 24 may include a current collector body 241 and a partition 243. The current collector body 241 is tubular, and the partition 243 is disposed within the current collector body 241 and extends along the length direction of the current collector body 241 to separate a flow distribution cavity 2402 and a flow convergence cavity 2401 within the current collector body 241. A heat insulation cavity 2405 is formed within the partition 243. Alternatively, there may be multiple partitions 243, which are spaced apart along the thickness direction of the heat exchange plate 21, and a heat insulation cavity 2405 is defined between two adjacent partitions 243.

[0203] The main body 241 can be a tube with a rectangular cross section. The baffle 243 is set inside the main body 241 and extends from one end of the main body 241 along its length to the other end. The baffle 243 is flush with both ends of the main body 241. The two sides of the baffle 243 along its width are connected to the opposite side walls of the main body 241.

[0204] The number of partitions 243 can be one, two, three, four, or more. When there are multiple partitions 243, they can be arranged at intervals along the first direction. For example, there can be two partitions 243, which are parallel and arranged at intervals. The two partitions 243 cooperate with the flow collection body 241 to define a heat insulation cavity 2405 located between the two partitions 243, a flow distribution cavity 2402 located on both sides of the two partitions 243 away from the heat insulation cavity 2405, and a flow collection cavity 2401.

[0205] In addition, when there is only one partition 243, the flow distribution cavity 2402 and the flow collection cavity 2401 are formed on both sides of the partition 243 respectively. The partition 243 can be formed as a hollow plate structure to define the heat insulation cavity 2405. The heat insulation cavity 2405 can penetrate through both ends of the partition 243 along the length direction of the partition 243 to facilitate the forming of the heat insulation cavity 2405.

[0206] The partition plate 243 and the collector body 241 can be separate parts. The partition plate 243 and the collector body 241 can be sealed together by welding or other connection methods. Of course, the partition plate 243 and the collector body 241 can also be an integral part, that is, the partition plate 243 and the collector body 241 can be integrally formed. For example, the partition plate 243 and the collector body 241 can be an integrally formed extruded part. In this way, the processing is convenient and the sealing performance is better.

[0207] In the above technical solution, by making the current collector 24 include the current collector body 241 and the partition 243, the partition 243 is used to separate the flow distribution cavity 2402 and the flow collection cavity 2401, and a heat insulation cavity 2405 is formed on the partition 243, or multiple partitions 243 are used to further separate the heat insulation cavity 2405 located between the flow distribution cavity 2402 and the flow collection cavity 2401, the structure of the current collector 24 can be simplified and the processing and manufacturing can be facilitated while improving the heat insulation performance between the flow distribution cavity 2402 and the flow collection cavity 2401.

[0208] In some embodiments of this application, the current collector 24 may include a current collector body 241 and end caps 242. The current collector body 241 is open at both ends in the third direction X. A partition 243 is provided inside the current collector body 241. The partition 243 extends along the length direction (i.e., the third direction X) of the current collector body 241 and divides the space inside the current collector body 241 into a diversion chamber 2402 and a confluence chamber 2401. There are two end caps 242, and the two end caps 242 respectively seal the two open ends of the current collector body 241.

[0209] Furthermore, the cross-section of the manifold body 241 is rectangular. This facilitates the extrusion molding of the manifold body 241 and improves its structural strength.

[0210] In some other embodiments, the current collector 24 may include a first current collecting member and a second current collecting member. The first current collecting member and the second current collecting member are two independent components. The first current collecting member and the second current collecting member are arranged along the first direction Z, or the first current collecting member and the second current collecting member are arranged along the second direction Y. Wherein, a current collecting cavity 2401 is defined in the first current collecting member, and a current dividing cavity 2402 is defined in the second current collecting member.

[0211] In the above technical solution, the current collector 24 includes a current collecting main body 241 and an end cover 242, which can simplify the structure of the current collector 24 and facilitate the processing and molding of the current collector 24.

[0212] The specific structures of the current collector 24 of the heat exchange member 20, the liquid inlet joint 25 and the liquid outlet joint 26 will be described below with reference to FIGS. 10-12. FIG. 10 is a schematic diagram of the heat exchange tube 23 and the current collector 24 of the heat exchange member 20 according to an embodiment of the present application from another angle; FIG. 11 is an enlarged view of the circled part B in FIG. 10; FIG. 12 is a schematic diagram of the heat exchange tube 23 and the current collector 24 of the heat exchange member 20 according to an embodiment of the present application from another angle.

[0213] In some embodiments of the present application, the heat exchange member 20 may further include: a liquid inlet joint 25 and a liquid outlet joint 26. A liquid inlet 2403 communicating with the current dividing cavity 2402 and a liquid outlet 2404 communicating with the current collecting cavity 2401 are formed on the current collector 24. Both the liquid inlet 2403 and the liquid outlet 2404 are formed on the side of the current collector 24 facing away from the heat exchange tube 23. The liquid inlet joint 25 is connected to the position of the liquid inlet 2403, and the liquid outlet joint 26 is connected to the position of the liquid outlet 2404.

[0214] For example, the current collector 24 extends along the third direction X and has a cross-section in the shape of a Chinese character 'Ri'. The heat exchange tubes 23 are arranged on one side of the current collector 24 in the second direction Y. The liquid inlet 2403 and the liquid outlet 2404 are arranged on the other side of the current collector 24 in the second direction Y. The liquid inlet joint 25 extends away from the current collector 24 along the second direction Y and is connected to the periphery of the liquid inlet 2403. The liquid outlet joint 26 extends away from the current collector 24 along the second direction Y and is connected to the periphery of the liquid outlet 2404. Wherein, the liquid inlet joint 25 is used to connect the external liquid inlet pipeline of the thermal management system of the battery 1000, and the liquid outlet joint 26 is used to connect the external liquid outlet pipeline.

[0215] Wherein, both the liquid inlet 2403 and the liquid outlet 2404 are arranged on the side of the current collector 24 facing away from the heat exchange tube 23. On the one hand, it is convenient to install and connect the liquid inlet joint 25 and the liquid outlet joint 26, and avoid interference between the liquid inlet joint 25 and the liquid outlet joint 26 and the heat exchange tube 23. On the other hand, the liquid inlet 2403 and the liquid outlet 2404 are arranged on the same side of the current collector 24, which is convenient for the external pipeline to take over on the same side of the current collector 24, regularize the running direction of the external pipeline, and compact the structure.

[0216] The liquid inlet 2403 can be circular, elliptical, polygonal, or semi-circular. The liquid outlet 2404 can also be circular, elliptical, polygonal, or semi-circular.

[0217] The periphery of the liquid inlet connector 25 and the liquid inlet 2403 can be fixedly connected by welding, snap-fit, threaded connection or fastening, and the periphery of the liquid outlet connector 26 and the liquid outlet 2404 can also be fixedly connected by welding, snap-fit, threaded connection or fastening.

[0218] In the above technical solution, both the liquid inlet connector 25 and the liquid outlet connector 26 are connected to the side of the collector 24 away from the heat exchange tube 23, which makes it convenient for the external liquid inlet pipe and the external liquid outlet pipe to be connected to the same side of the collector 24, thus organizing the routing of the external pipe and creating a compact structure.

[0219] In some embodiments of this application, at least one of the inlet connector 25 and the outlet connector 26 is welded to the current collector 24 via a welding gasket 28.

[0220] In other words, only the inlet connector 25 can be welded to the collector 24 via the welding gasket 28, only the outlet connector 26 can be welded to the collector 24 via the welding gasket 28, or both the inlet connector 25 and the outlet connector 26 can be welded to the collector 24 via the welding gasket 28.

[0221] The welding gasket 28 includes a gasket body and a solder layer, which is disposed on both sides of the gasket body in the thickness direction (e.g., the second direction Y). In a specific example, the current collector 24, the inlet connector 25, and the outlet connector 26 are all made of aluminum. The gasket body of the welding gasket 28 is made of ternary aluminum, and the solder layer is made of tetra-aluminum. Since the melting point of tetra-aluminum is lower than that of ternary aluminum, when the welding gasket 28 is used to weld the current collector 24 to the inlet connector 25 and the outlet connector 26, the tetra-aluminum in the solder layer melts, so that the inlet connector 25 or the outlet connector 26 is connected to the gasket body through the solder layer, and the current collector 24 is connected to the gasket body through the solder layer.

[0222] In the above technical solution, welding gaskets 28 are used to weld the current collector 24 to the liquid inlet connector 25 and the liquid outlet connector 26, which can facilitate the welding of the current collector 24 to the liquid inlet connector 25 and the liquid outlet connector 26 and improve the welding quality.

[0223] The specific structure of the support 27 of the heat exchanger 20 is described below with reference to Figures 13 and 14. Figure 13 is a schematic diagram of the back plate 22 of the heat exchanger 20 according to an embodiment of the present application; Figure 14 is a schematic diagram of the support 27 of the heat exchanger 20 according to an embodiment of the present application.

[0224] In some embodiments of this application, the heat exchanger 20 may further include a bracket 27, which is disposed on the side of the back plate 22 away from the heat exchange tube 23 and is fixedly connected to the back plate 22.

[0225] In other words, the heat exchange tube 23 and the bracket 27 are respectively arranged on both sides of the back plate 22 in the first direction Z. The bracket 27 and the back plate 22 can be welded, snapped, glued, or connected by fasteners to achieve a fixed connection between them.

[0226] The bracket 27 is connected to the back plate 22, which can strengthen the structural strength of the back plate 22 and thus strengthen the overall strength of the heat exchanger 20. The bracket 27 is arranged on the side of the back plate 22 away from the heat exchange tube 23, so that the bracket 27 and the heat exchange tube 23 do not interfere with each other and reduce the impact of the bracket 27 on the heat exchange tube 23.

[0227] It should be noted that the bracket 27 not only strengthens the structure of the back plate 22, but also serves as a connection structure between the housing 100 and the external structure when the heat exchanger 20 is the second part of the housing 100. This facilitates the fixed connection between the housing 100 and the external structure, and makes it easier to fix the battery 1000, without affecting the heat exchange effect of the heat exchanger 20.

[0228] In the above technical solution, a bracket 27 is provided on the side of the back plate 22 away from the heat exchange tube 23. The bracket 27 can not only strengthen the structural strength of the back plate 22 and the overall strength of the heat exchange component 20, but also serve as a connection structure between the housing 100 and the external structure, making it convenient to fix the housing 100 to the external structure and to fix the battery 1000.

[0229] In some embodiments of this application, the number of supports 27 is at least one. When the number of supports 27 is multiple, the multiple supports 27 extend along a third direction X and are spaced apart in a second direction Y. The first direction Z, the second direction Y and the third direction X intersect each other.

[0230] For example, the number of supports 27 can be one, two, three, four, five, or more. It should be noted that the number of supports 27 can be specifically set according to the structural strength requirements of the heat exchanger 20 and the connection requirements between the battery 1000 and the outside, so as to improve the applicability of the heat exchanger 20.

[0231] In a specific example, the straight pipe section 231 of the heat exchange tube 23 extends along the second direction Y, and a reinforcing rib 221 is provided on the back plate 22, extending along the second direction Y. The support 27 is fixed to the back plate 22 and extends along the third direction X, and is spaced apart in the second direction Y. In this case, for the heat exchanger 20 as a whole, the reinforcing rib 221 on the back plate 22 can play a role in structural reinforcement in the second direction Y, and the support 27 can play a role in structural reinforcement in the third direction X, thereby further improving the rigidity of the heat exchanger 20.

[0232] In the above technical solution, by setting multiple brackets 27, and having multiple brackets 27 extend along the third direction X and be arranged at intervals in the second direction Y, the structural strength of the heat exchanger 20 can be further improved, and the connection and fixation of the battery 1000 with the external structure can be further facilitated.

[0233] In some embodiments of this application, the bracket 27 is plate-shaped, and reinforcing ribs 271 are formed on the bracket 27.

[0234] Specifically, the bracket 27 is a plate shape set perpendicular to the first direction Z. The length direction of the bracket 27 is along the third direction X, and the width direction of the bracket 27 is along the second direction Y. This simplifies the structure of the bracket 27 and reduces the processing and manufacturing cost of the bracket 27.

[0235] In one example, the reinforcing rib 271 can be in the shape of a protrusion; the reinforcing rib 271 can also extend in a certain direction in the shape of a strip, for example, the reinforcing rib 271 can extend along a straight line and / or a curve; of course, the reinforcing rib 271 can also be in the shape of a ring, for example, the reinforcing rib 271 can extend into a circular ring, a rectangular ring, etc. When there are multiple reinforcing ribs 271, the multiple reinforcing ribs 271 can be arranged in an array, and of course, the positions of the multiple reinforcing ribs 271 can also be set according to specific requirements.

[0236] Furthermore, the reinforcing rib 271 can be a rib added to the surface of the bracket 27, or the reinforcing rib 271 can be formed by protrusion of a portion of the plate of the bracket 27. For example, the reinforcing rib 271 can be directly stamped on the bracket 27, thereby reducing weight and lowering costs.

[0237] In the above technical solution, by setting reinforcing ribs 271 on the support 27, the structural strength of the support 27 can be increased, and the overall structural strength of the heat exchanger 20 can be further improved.

[0238] In some embodiments of this application, a plurality of reinforcing ribs 271 are formed on the bracket 27, and the plurality of reinforcing ribs 271 extend along a third direction X and are spaced apart in a second direction Y.

[0239] For example, the number of reinforcing ribs 271 can be two, three, four, five, eight, ten, fifteen, or twenty, etc. The reinforcing ribs 271 can extend in a straight line or a curve in the third direction X. The spacing between the multiple reinforcing ribs 271 in the second direction Y can be equal or unequal, and the spacing between two adjacent reinforcing ribs 271 can always be equal or gradually change. For example, in a specific example, the multiple reinforcing ribs 271 extend in a straight line in the third direction X, and the multiple reinforcing ribs 271 are evenly spaced in the second direction Y.

[0240] In the above technical solution, multiple reinforcing ribs 271 extending along the third direction X are provided on the support 27. The reinforcing ribs 271 can be used to strengthen the structural strength of the support 27, thereby improving the structural strength of the heat exchanger 20 along the third direction X and enhancing the reliability of the heat exchanger 20.

[0241] In some embodiments of this application, a first positioning part 222 is provided on the back plate 22, and a second positioning part 272 is provided on the bracket 27, with the first positioning part 222 and the second positioning part 272 being positioned and engaged.

[0242] The first positioning part 222 can be a positioning groove 2721, a positioning hole, a positioning post, or a positioning rib, etc., and the second positioning part 272 can be a positioning post, positioning rib, positioning groove 2721, or positioning hole structure that is adapted to the first positioning part 222.

[0243] In the above technical solution, a first positioning part 222 and a second positioning part 272 are respectively provided on the back plate 22 and the bracket 27. The bracket 27 can be positioned on the back plate 22 through the first positioning part 222 and the second positioning part 272, thereby facilitating the subsequent connection and fixation (e.g., welding or fastening) between the back plate 22 and the bracket 27 and improving assembly efficiency.

[0244] In some embodiments of this application, one of the first positioning part 222 and the second positioning part 272 is formed with a positioning boss and the other is formed with a positioning groove 2721, and the positioning boss is fitted into the positioning groove 2721.

[0245] For example, the back plate 22 has a positioning boss, and the bracket 27 has a positioning groove 2721; or, the back plate 22 has a positioning groove 2721, and the bracket 27 has a positioning boss, the shapes of which are adapted to the positioning groove 2721, and the positioning boss fits into the positioning groove 2721. Alternatively, the back plate 22 may have a first positioning boss and a first positioning groove 2721, and the bracket 27 may have a second positioning boss and a second positioning groove 2721, the first positioning boss fitting into the second positioning groove 2721, and the second positioning boss fitting into the first positioning groove 2721.

[0246] The number of positioning bosses can be one or more, and the number of positioning grooves 2721 can be one or more, and they correspond one-to-one with the positioning bosses.

[0247] In the above technical solution, the first positioning part 222 and the second positioning part 272 are respectively formed as a positioning boss and a positioning groove 2721, which can simplify the positioning structure of the back plate 22 and the bracket 27, facilitate processing and manufacturing, and reduce production difficulty.

[0248] In some embodiments of this application, the first positioning part 222 is formed as a positioning boss protruding toward the bracket 27, and the second positioning part 272 includes a first protrusion 2722 and a second protrusion 2723 protruding toward the back plate 22. The first protrusion 2722 and the second protrusion 2723 are arranged at intervals and cooperate to define a positioning groove 2721.

[0249] Furthermore, the positioning boss can be stamped onto the back plate 22, and the first protrusion 2722 and the second protrusion 2723 can be stamped onto the bracket 27. This facilitates processing and improves production efficiency.

[0250] For example, the bracket 27 has a second positioning portion 272 at both ends in the third direction X. Each second positioning portion 272 includes a first protrusion 2722 and a second protrusion 2723, which are respectively formed as the two side edges of the bracket 27 in the second direction Y. Further, the bracket 27 is rectangular plate-shaped, and the four corners of the bracket 27 protrude towards the back plate 22 to form the first protrusion 2722 and the second protrusion 2723 of the two second positioning portions 272.

[0251] During assembly, the positioning boss on the back plate 22 fits into the positioning groove 2721 and is in contact with the bottom wall of the positioning groove 2721. The first protrusion 2722 and the second protrusion 2723 are in contact with the side surface of the back plate 22 facing the bracket 27, and the positioning boss is sandwiched between the first protrusion 2722 and the second protrusion 2723.

[0252] In the above technical solution, by including a first protrusion 2722 and a second protrusion 2723 arranged at intervals in the second positioning part 272, the first protrusion 2722 and the second protrusion 2723 cooperate to define the positioning groove 2721, thereby simplifying the forming structure of the positioning groove 2721, facilitating processing, and facilitating the positioning and cooperation between the bracket 27 and the back plate 22, making assembly convenient.

[0253] In some embodiments of this application, the back plate 22 has outwardly protruding lugs 223 on both sides of the third direction X, a first positioning part 222 is formed on the lugs 223, the bracket 27 extends along the third direction X, and a second positioning part 272 is formed at both ends of the bracket 27 in the third direction X.

[0254] For example, the heat exchanger 20 may include four supports 27, which extend along a third direction X and are spaced apart in a second direction Y. The back plate 22 has four lugs 223 spaced apart on both sides of its third direction X. The lugs 223 are plate-shaped and coplanar with the main body of the back plate 22, and the outer contour of the lugs 223 is rectangular. In the third direction X, the two ends of each support 27 extend to the positions of two opposite lugs 223 on the back plate 22 and are positioned and engaged with the first positioning part 222 on the lugs 223.

[0255] At least a portion of the lug 223 extends beyond the periphery of the heat exchange plate 21, so that the first positioning part 222 can be arranged on the periphery of the heat exchange plate 21 and the heat exchange tube 23. Thus, the connection structure between the first positioning part 222 and the heat exchange tube 23 or the back plate 22 and the heat exchange plate 21 will not interfere. In addition, the bracket 27 can also strengthen the lug 223. The two ends of the lug 223 and the bracket 27 can together form the connection structure between the housing 100 and the external structure, which facilitates the fixing of the battery 1000.

[0256] Furthermore, the bracket 27 has a first connection hole at both ends and a second connection hole on the lug 223. The first connection hole and the second connection hole are opposite to and connected in the first direction Z. The heat exchanger 20 can be fixedly connected to the external structure of the housing 100 by fasteners passing through the first connection hole and the second connection hole, so as to realize the installation and fixation of the battery 1000.

[0257] Furthermore, each lug 223 may be provided with multiple second connecting holes, with the first connecting hole corresponding to the second connecting hole one by one. Even further, the second connecting hole penetrates the positioning boss along the first direction Z; in other words, the second connecting hole is formed on the positioning boss, and the first connecting hole is formed within the positioning groove 2721.

[0258] In the above technical solution, the back plate 22 has outwardly protruding lugs 223 on both sides of the third direction X. The first positioning part 222 is formed on the lugs 223. In this way, the first positioning part 222 can be arranged on the periphery of the heat exchange plate 21 and the heat exchange tube 23, so that the connection structure between the first positioning part 222 and the heat exchange tube 23 or the back plate 22 and the heat exchange plate 21 does not interfere. In addition, the bracket 27 can also play a role in structural reinforcement of the lugs 223. The lugs 223 and the two ends of the bracket 27 can jointly form the connection structure between the housing 100 and the external structure, which facilitates the fixing of the battery 1000.

[0259] Secondly, embodiments of this application also provide a housing 100, including: a first part 10 and a second part, the first part 10 forming a receiving cavity 101 open on one side; the second part covering the open side of the receiving cavity 101, and the second part being a heat exchanger 20 of any of the above embodiments.

[0260] In the above technical solution, since the second part of the housing 100 is the heat exchanger 20, and the heat exchanger 20 includes a heat exchange plate 21, a heat exchange tube 23 and a back plate 22 arranged sequentially from the inside to the outside, the heat exchanger 20 can not only replace a part of the housing 100, reduce the number of parts of the battery 1000 and reduce costs, but also the structure of the heat exchanger 20 with the heat exchange tube 23 connected to the heat exchange plate 21 has a high thermal conductivity and good heat conduction effect, which can improve the heat exchange efficiency between the heat exchanger 20 and the battery cell 300. In addition, the heat exchanger 20 includes the heat exchange tube 23. Compared with the stamped flow channel plate, the heat exchange tube 23 has a uniform flow rate, low pressure drop and light weight, which can improve the energy density of the battery 1000.

[0261] Thirdly, this application also provides a battery 1000, including a housing 100 of any of the above embodiments and a plurality of battery cells 300, wherein the plurality of battery cells 300 are disposed in a receiving cavity 101.

[0262] Multiple battery cells 300 can form multiple battery groups 1000. Each battery group 1000 includes multiple battery cells 300 stacked along the second direction Y, and the multiple battery groups 1000 are stacked along the third direction X. All multiple battery cells 300 are fixedly connected to the heat exchange plate 21 of the heat exchanger 20.

[0263] In the above technical solution, since the battery 1000 is provided with the aforementioned housing 100, and since the second part of the housing 100 is a heat exchanger 20, the heat exchange efficiency between the heat exchanger 20 and the battery cell 300 can be improved. Moreover, compared with the stamped flow channel plate, the heat exchange tube 23 has a uniform flow rate, a small pressure drop, and is lightweight, which can improve the energy density of the battery 1000.

[0264] Fourthly, this application also provides an electrical device 1, including the battery 1000 of any of the above embodiments.

[0265] In the above technical solution, the overall performance of the electrical equipment 1 is improved by incorporating the battery 1000.

[0266] A battery 1000 according to a specific embodiment of the present application will now be described with reference to Figures 2-14.

[0267] Referring to Figures 2 and 3, the battery 1000 includes a housing 100 and a plurality of battery cells 300. The housing 100 includes a first part 10 and a heat exchanger 20. The first part 10 defines a receiving cavity 101 that is open on one side in a first direction Z. The heat exchanger 20 covers the open side of the receiving cavity 101. For example, the first direction Z is the vertical direction. The first part 10 has a receiving cavity 101 that is open on the lower side. The heat exchanger 20 is disposed at the bottom of the first part 10 and covers the receiving cavity 101. The plurality of battery cells 300 are disposed in the receiving cavity 101 and are supported and fixed on the upper surface of the heat exchanger 20.

[0268] As shown in Figures 5 and 6, the heat exchanger 20 includes a heat exchange plate 21, a heat exchange tube 23, a back plate 22, a support 27, a collector 24, a liquid inlet connector 25, and a liquid outlet connector 26. The heat exchange plate 21, heat exchange tube 23, back plate 22, and support 27 are arranged sequentially from top to bottom.

[0269] The heat exchange plate 21 has a downwardly recessed anti-overflow groove 211 formed by stamping. The periphery of the heat exchange plate 21 is formed into a flange 212. Multiple battery cells 300 are disposed in the anti-overflow groove 211 and are bonded to the heat exchange plate 21. There are four heat exchange tubes 23, which are arranged at intervals along the third direction X. Each heat exchange tube 23 is bent into a U-shape with one side opening towards the second direction Y.

[0270] The collector 24 is arranged on the open side of the heat exchange tube 23 in the second direction Y. Both ends of each heat exchange tube 23 are connected to the collector 24 to connect the flow distribution chamber 2402 and the flow collection chamber 2401 in the collector 24, respectively. The liquid inlet connector 25 and the liquid outlet connector 26 are both located on the side of the collector 24 away from the heat exchange tube 23, and are connected to the liquid inlet and liquid outlet on the collector 24, respectively.

[0271] The back plate 22 has seven upwardly protruding reinforcing ribs 221 formed by stamping. The seven reinforcing ribs 221 extend along the second direction Y and are spaced apart in the third direction X. The heat exchange tubes 23 are located between the back plate 22 and the heat exchange plate 21. The four heat exchange tubes 23 include eight straight tube sections 231 extending along the second direction Y. A reinforcing rib 221 is provided between each pair of adjacent straight tube sections 231. The back plate 22 has lugs 223 protruding along the third direction X on both sides of its third-direction X. Each lug 223 has a downwardly protruding positioning boss formed by stamping. Each positioning boss has multiple second connecting holes.

[0272] There are two brackets 27. The two brackets 27 extend upward along the third direction X and are spaced apart in the second direction Y. Each bracket 27 has multiple reinforcing ribs 271 stamped on it. The reinforcing ribs 271 extend upward along the third direction X and are spaced apart in the second direction Y. Both ends of the bracket 27 in the second direction Y have a first protrusion 2722 and a second protrusion 2723 stamped on it. The first protrusion 2722 and the second protrusion 2723 cooperate to define a positioning groove 2721. Multiple first connecting holes are formed in the positioning groove 2721. The first connecting holes are aligned vertically with the second connecting holes.

[0273] Among them, the heat exchange plate 21, heat exchange tube 23, current collector 24, liquid inlet connector 25, liquid outlet connector 26, back plate 22 and bracket 27 are all made of aluminum. The heat exchange plate 21 is welded to the heat exchange tube 23, the reinforcing rib 221 of the back plate 22 is welded to the heat exchange plate 21, the heat exchange tube 23 is welded to the current collector 24, the liquid inlet connector 25 and the liquid outlet connector 26 are welded to the current collector 24 through welding gaskets 28, and the bracket 27 is welded to the back plate 22.

[0274] In the above technical solution, the heat of the fluid in the heat exchange tube 23 can be transferred to the battery cell 300 through the heat exchange tube 23 and the heat exchange plate 21 which are directly welded together. As a result, the heat transfer efficiency of the heat exchange component 20 is high, the thermal management performance can reach the performance of stamped plate, and the pressure drop is small. In addition, the structural strength of the heat exchange component 20 is higher.

[0275] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A heat exchange member (20) for a battery (1000) case (100), comprising: a heat exchange plate (21); a back plate (22) disposed on one side of the heat exchange plate (21) in a first direction (Z) and connected with the heat exchange plate (21), the first direction (Z) being a thickness direction of the heat exchange plate (21); a heat exchange pipe (23) disposed between the heat exchange plate (21) and the back plate (22) and fixedly connected with the heat exchange plate (21) and / or the back plate (22).

2. The heat exchange member (20) according to claim 1, wherein A side surface of the heat exchange plate (21) away from the heat exchange pipe (23) is formed with an anti-overflow groove (211), a bottom wall and / or a side wall of the anti-overflow groove (211) being adapted to be adhesively connected with a plurality of battery (1000) monomers.

3. The heat exchange member (20) according to claim 2, wherein The anti-overflow groove (211) is recessed from a portion of the heat exchange plate (21) towards the back plate (22) along the first direction (Z).

4. The heat exchange member (20) according to claim 2 or 3, wherein A periphery of the heat exchange plate (21) is provided with a turn-up (212) extending outwardly away from a center of the heat exchange plate (21), the turn-up (212) extending in a circumferential direction of the anti-overflow groove (211) to be annular.

5. The heat exchange member (20) according to claim 4, wherein A depth of the anti-overflow groove (211) is greater than or equal to 7 mm, and / or a width of the turn-up (212) is greater than or equal to 10 mm.

6. The heat exchange member (20) according to any one of claims 1-5, wherein One of the back plate (22) and the heat exchange plate (21) is formed with a reinforcing rib (221) protruding towards the heat exchange pipe (23), the reinforcing rib (221) being fixedly connected with the other of the back plate (22) and the heat exchange plate (21).

7. The heat exchange member (20) according to claim 6, wherein A plurality of the reinforcing ribs (221) extend along a second direction (Y) and are arranged in a third direction (X) at intervals, at least part of the heat exchange pipe (23) being arranged between two adjacent reinforcing ribs (221), the first direction (Z), the second direction (Y) and the third direction (X) intersecting each other in pairs.

8. The heat exchange member (20) according to claim 7, wherein The heat exchange pipe (23) comprises a plurality of straight pipe segments (231) extending along the second direction (Y) and arranged in the third direction (X) at intervals, and the plurality of straight pipe segments (231) and the plurality of reinforcing ribs (221) are arranged in the third direction (X) alternately.

9. The heat exchange member (20) according to any one of claims 1-8, wherein A periphery of the heat exchange plate (21) is fixedly connected with a periphery of the back plate (22).

10. The heat exchange member (20) according to any one of claims 1-9, wherein A plurality of the heat exchange pipes (23) are arranged in the third direction (X) at intervals, the third direction (X) intersecting the first direction (Z).

11. The heat exchange member (20) according to any one of claims 1-10, wherein The heat exchange pipe (23) comprises a plurality of straight pipe segments (231) and at least one bent segment (232), the plurality of straight pipe segments (231) each extending along the second direction (Y) and arranged in the third direction (X) at intervals, and the plurality of straight pipe segments (231) are sequentially connected through the bent segment (232), the first direction (Z), the second direction (Y) and the third direction (X) intersecting each other in pairs.

12. The heat exchange member (20) according to any one of claims 1-11, wherein, The heat exchange pipe (23) is welded or adhesively connected with the heat exchange plate (21), and the heat exchange plate (21) is welded with the back plate (22).

13. The heat exchange member (20) according to any one of claims 1-12, wherein The heat exchange component (20) further comprises a current collector (24) having a confluence cavity (2401) and a distribution cavity (2402), and the inlet of the heat exchange pipe (23) communicates with the distribution cavity (2402) and the outlet communicates with the confluence cavity (2401).

14. The heat exchange member (20) according to claim 13, wherein The confluence cavity (2401) and the distribution cavity (2402) are arranged along the thickness direction of the heat exchange plate (21), The inlet end of the heat exchange pipe (23) is bent towards one side in the thickness direction of the heat exchange plate (21) and connected with the current collector (24), and the outlet end of the heat exchange pipe (23) is bent towards the other side in the thickness direction of the heat exchange plate (21) and connected with the current collector (24).

15. The heat exchange member (20) according to claim 13 or 14, wherein The current collector (24) is further formed with a heat insulation cavity, and the heat insulation cavity (2405) is arranged between the distribution cavity (2402) and the confluence cavity (2401).

16. The heat exchange member (20) according to claim 15, wherein The current collector (24) comprises a current collector body (241) and a partition plate (243), the current collector body (241) is tubular, the partition plate (243) is arranged in the current collector body (241) and extends along the length direction of the current collector body (241) to separate the distribution cavity (2402) and the confluence cavity (2401) in the current collector body (241), Wherein, the heat insulation cavity (2405) is formed in the partition plate (243); or, the number of the partition plate (243) is multiple, multiple partition plates (243) are arranged in the thickness direction of the heat exchange plate, and the heat insulation cavity (2405) is defined between adjacent two partition plates (243).

17. The heat exchange member (20) according to claims 13-16, wherein The heat exchange component (20) further comprises a liquid inlet connector (25) and a liquid outlet connector (26), the current collector (24) is formed with a liquid inlet (2403) communicating with the distribution cavity (2402) and a liquid outlet (2404) communicating with the confluence cavity (2401), the liquid inlet (2403) and the liquid outlet (2404) are both formed on the side of the current collector (24) away from the heat exchange pipe (23), the liquid inlet connector (25) is connected at the position of the liquid inlet (2403), and the liquid outlet connector (26) is connected at the position of the liquid outlet (2404).

18. The heat exchange member (20) according to claim 17, wherein At least one of the liquid inlet connector (25) and the liquid outlet connector (26) is welded with the current collector (24) through a welding pad (28).

19. The heat exchange member (20) according to any one of claims 1-18, wherein, The heat exchange component (20) further comprises a support (27), the support (27) is arranged on the side of the back plate (22) away from the heat exchange pipe (23) and fixedly connected with the back plate (22).

20. The heat exchange member (20) according to claim 19, wherein The number of the support (27) is at least one, when the number of the support (27) is multiple, multiple supports (27) extend along a third direction (X) and are arranged in a second direction (Y) at intervals, and the first direction (Z), the second direction (Y) and the third direction (X) are intersected two by two.

21. The heat exchange member (20) according to claim 19 or 20, wherein The support (27) is in the shape of a plate body, and reinforcing ribs (271) are formed on the support (27).

22. The heat exchange member (20) according to claim 21, wherein A plurality of reinforcing ribs (271) are formed on the support (27), and the reinforcing ribs (271) extend in the third direction (X) and are arranged at intervals in the second direction (Y).

23. The heat exchange member (20) according to any one of claims 19-22, wherein The back plate (22) is provided with a first positioning portion (222), the support (27) is provided with a second positioning portion (272), and the first positioning portion (222) and the second positioning portion (272) are positioned and matched.

24. The heat exchange member (20) according to claim 23, wherein One of the first positioning portion (222) and the second positioning portion (272) is formed with a positioning boss, and the other is formed with a positioning groove (2721), and the positioning boss is matched in the positioning groove (2721).

25. The heat exchange member (20) according to claim 23 or 24, wherein The back plate (22) is provided with outwardly protruding lugs (223) on both sides in the third direction (X), the first positioning portion (222) is formed on the lugs (223), the support (27) extends in the third direction (X), and the second positioning portion (272) is formed on both ends of the support (27) in the third direction (X).

26. A box (100) comprising: a first part (10) forming a cavity (101) with an open side; a second part covering the open side of the cavity (101), the second part being a heat exchange element (20) according to any one of claims 1-25.

27. A battery (1000) comprising a box (100) according to claim 26 and a plurality of battery cells (300), the plurality of battery cells (300) being arranged in the cavity (101).

28. An electrical device (1) comprising a battery (1000) according to claim 27.

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