Box body assembly, casing, battery pack and vehicle

Abstract

A box body assembly, and a casing, battery pack and vehicle using the box body assembly. The box body assembly comprises: a flow channel plate and a sealing covering plate, wherein a flow channel groove is formed in the flow channel plate; and the sealing covering plate is fixed to the flow channel plate, so as to cover the flow channel groove in a sealed manner, a heat exchange flow channel, in which a heat exchange medium circulates, is defined, and the sealing covering plate is configured to be defined by at least one of a box body and a box lid.

Description

Box components, housings, battery packs, vehicles

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application number 2023220519203, filed on July 31, 2023, entitled “Box assembly, housing, battery pack, vehicle,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the field of batteries, and in particular to a box assembly, a shell, a battery pack, and a vehicle. Background Art

[0004] In the related art, the battery pack has a box cover and a box body, the battery cells are connected to the box cover and the box body respectively, and the battery pack is directly connected to the vehicle body. In this case, the cold plate needs to be installed separately in the box body or the box cover. The box cover, box body and cold plate of the battery pack are all separate structural parts, and the functional integration is not high, which makes the processing and assembly efficiency of the battery pack low.

[0005] Summary of the Invention

[0006] This application aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of this application is to provide a box assembly for a battery pack. The design of the box assembly integrates the structure of the box assembly and / or the box cover with the heat exchange function of the box assembly, thereby simplifying the structure of the box assembly and enriching the functions of the box and / or the box cover.

[0007] The present application further proposes a housing having the above-mentioned box assembly.

[0008] The present application further proposes a battery pack having the above-mentioned shell.

[0009] The present application further proposes a vehicle having the above-mentioned battery pack.

[0010] According to the present application, the box assembly is applied to a battery pack, which includes a box body and a box cover that cooperate to define a accommodating cavity. The box assembly includes: a flow channel plate, which is formed with a flow channel groove; a covering plate, which is fixed to the flow channel plate to cover the flow channel groove and define a heat exchange flow channel for circulating a heat exchange medium. The covering plate is constructed to be defined by at least one of the box body and the box cover.

[0011] According to the box assembly of the present application, its sealing plate can be the part that cooperates with the box body and / or box cover and the flow channel plate, so that the box body and / or box cover of the battery pack are integrated with the structure of the sealing plate and have the function of heat exchange with the battery cells in the accommodating cavity, which can reduce the cost of the battery pack, improve production efficiency, simplify the battery pack structure and reduce the weight of the battery pack.

[0012] The shell according to the present application includes: a box body and a box cover, the box body and the box cover cooperate to define a accommodating cavity; a box body assembly, the box body assembly is constructed as the box body assembly described in any one of the above embodiments, and the covering plate is constructed to be defined by at least one of the box body and the box cover.

[0013] Since the shell according to the present application is provided with the box assembly of the above embodiment, the shell integrates the function of sealing the accommodating cavity and the function of exchanging heat with the accommodating cavity, and has a higher functional integration.

[0014] The battery pack according to the present application includes: a shell, the shell being constructed as the shell described in any one of the above embodiments; and a battery cell, the battery cell being arranged in the accommodating cavity.

[0015] Since the battery pack according to the present application is provided with the shell of the above-mentioned embodiment, the battery pack has a simple structure, a small number of components, simple and convenient processing, good production feasibility, high production efficiency, low labor cost, reduced processing cost, and high safety in use.

[0016] The vehicle according to the present application includes the battery pack described in the above embodiment.

[0017] Since the vehicle according to the present application is provided with the battery pack of the above embodiment, the vehicle is safer and more reliable to use.

[0018] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG1 is a diagram showing the overall structure of a battery pack according to an embodiment of the present application.

[0020] FIG2 is an exploded view of a battery pack according to an embodiment of the present application.

[0021] FIG3 is a top view of a flow channel plate according to an embodiment of the present application.

[0022] FIG4 is a side cross-sectional view of a battery pack according to an embodiment of the present application.

[0023] FIG5 is an enlarged view of circle A in FIG4.

[0024] FIG6 is a side cross-sectional view of a box assembly according to an embodiment of the present application.

[0025] FIG7 is a schematic diagram of the vehicle structure according to an embodiment of the present application.

[0026] Reference numerals

[0027] 1. Battery pack;

[0028] 10. Shell; 10a. Accommodation chamber; 11. Box body; 12. Box cover;

[0029] 13. Box assembly; 13a. Diverter channel; 13b. Converging channel; 13c. Converging end; 131. Channel plate; 1311. Reinforcement portion; 132. Cover plate;

[0030] 14. Reinforcement; 15. Bottom guard plate;

[0031] 20. Battery cell; 30. Expansion beam;

[0032] 1000. Vehicle. DETAILED DESCRIPTION

[0033] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0034] The box assembly 13 for the battery pack 1 according to an embodiment of the present application is described below with reference to FIG. 1 to FIG. 6 .

[0035] As shown in Figures 4 to 6, the box assembly 13 according to the present application is applied to the battery pack 1. The battery pack 1 includes a box 11 and a box cover 12 that cooperate to define a accommodating cavity 10a. The box assembly 13 includes: a flow channel plate 131 and a cover plate 132. The flow channel plate 131 is formed with a flow channel groove; the cover plate 132 is fixed to the flow channel plate 131 to cover the flow channel groove and define a heat exchange flow channel for circulating a heat exchange medium. The cover plate 132 is constructed to be defined by at least one of the box 11 and the box cover 12. The cover plate 132 is suitable for exchanging heat with the battery cell 20 located in the accommodating cavity 10a. In some embodiments, after the cover plate 132 is mated with the flow channel plate 131, the flow channel groove formed by the flow channel plate 131 itself is sealed, so that the cover plate 132 and the flow channel plate 131 jointly define the flow channel as a heat exchange channel. The heat exchange medium can only flow along the extension direction of the heat exchange channel. At this time, the case assembly 13 has the function of exchanging heat with the battery cells 20 in the accommodating cavity 10a. In some embodiments, the flow channel plate 131 can be mated with at least one of the case 11 and the case cover 12 to define a heat exchange channel. Here, the portion of the case 11 and the case cover 12 that mates with the flow channel plate 131 is constructed as the cover plate 132. This design allows the case 11 and / or the case cover 12 of the battery pack 1 to be integrated with the flow channel plate 131, allowing the case 11 and / or the case cover 12 of the battery pack 1 to exchange heat with the battery cells 20 in the accommodating cavity 10a, simplifying the structure of the battery pack 1 and reducing the weight of the battery pack 1.

[0036] According to the box assembly 13 of the present application, its covering plate 132 can be the part that cooperates with the box body 11 and / or the box cover 12 and the flow channel plate 131, so that the box body 11 and / or the box cover 12 of the battery pack 1 integrate the structure of the covering plate 132 and have the function of heat exchange with the battery cell 20 in the accommodating cavity 10a, which can reduce the cost of the battery pack 1, improve production efficiency, simplify the structure of the battery pack 1, and reduce the weight of the battery pack 1.

[0037] It can be understood that the flow channel plate 131 can be set in various ways. In some embodiments, the flow channel plate 131 can be set on the box cover 12, so that at least part of the box cover 12 constitutes a sealing plate 132 and has the function of exchanging heat with the battery cells 20 in the accommodating cavity 10a; in other embodiments, the flow channel plate 131 can be set on the box body 11, so that at least part of the box body 11 constitutes a sealing plate 132 and has the function of exchanging heat with the battery cells 20 in the accommodating cavity 10a; in other embodiments, the flow channel plate 131 can be set on the box cover 12 and the box body 11 at the same time. Such a setting can better perform thermal management control of the battery pack 1, can more quickly take away the heat generated by the battery cells 20 in the accommodating cavity 10a, and can cool the battery pack 1 more quickly, effectively reducing the risk of thermal runaway of the battery pack 1. The setting form of the box assembly 13 and the installation position of the flow channel plate 131 can be flexibly selected according to different needs, and there is no limitation here.

[0038] According to some embodiments of the present application, as shown in Figures 5 and 6, at least a portion of the flow channel plate 131 protrudes in a direction away from the cover plate 132 to define a flow channel groove. In some embodiments, the portion of the reinforcement portion 1311 facing the cover plate 132 is formed with a flow channel groove, and the cover plate 132 covers the flow channel groove to define a heat exchange flow channel. In some embodiments, a portion of the flow channel plate 131 is formed with a reinforcement portion 1311, and the reinforcement portion 1311 forms a height difference with other portions of the flow channel plate 131, so that the reinforcement portion 1311 can serve as a structural reinforcement on the surface of the flow channel plate 131 facing away from the cover plate 132, so that the box assembly 13 can enhance the structural strength of the battery pack 1 while exchanging heat with the battery cells 20 in the accommodating cavity 10a, thereby enriching the functionality of the box assembly 13.

[0039] In some embodiments of the present application, as shown in Figures 3-6 , the heat exchange channel includes multiple diverter channels 13a and at least one converging channel 13b. The multiple diverter channels 13a are spaced apart along a first direction, each diverter channel 13a extends along a second direction, and at least a portion of the multiple diverter channels 13a communicate with the same converging channel 13b. The second direction is orthogonal to the first direction. As shown in Figure 3 , the channel plate 131 is formed with a converging end 13c that communicates with the heat exchange channel. The heat exchange channel can communicate with the heat exchange structure outside the battery pack 1 through the converging end 13c. After the heat exchange medium in the heat exchange channel initially exchanges heat with the accommodating cavity 10a, the heat-carrying heat exchange medium can flow through the converging end 13c to the heat exchange structure outside the battery pack 1 for heat exchange and cooling. After heat exchange and cooling, the heat exchange medium then flows back through the converging end 13c to the heat exchange channel for further heat exchange with the accommodating cavity 10a. In some embodiments, the heat exchange channel includes a plurality of diverter channels 13a, which are spaced apart along a first direction and extend along a second direction, so that the diverter channels 13a can cover a large area of ​​the housing 11 and / or the housing cover 12, thereby increasing heat exchange efficiency and enhancing heat exchange effects. Here, the converging channel 13b can be disposed at the end of the diverter channel 13a, or can be connected to the middle portion of the diverter channel 13a in the extension direction. The heat exchange medium in the diverter channel 13a can flow into the converging channel 13b and then flow from the converging end 13c to the outside of the battery pack 1, or the heat exchange medium in the diverter channel 13a can flow directly from the converging end 13c to the outside of the battery pack 1, without limitation.

[0040] In some embodiments, the converging end 13c can be constructed as a plurality of converging ends 13c that are connected to each other, and in the second direction, the same end of the multiple diversion channels 13a can be respectively connected to the multiple converging ends 13c, and the other ends of the multiple diversion channels 13a are connected to the same converging channel 13b, or the other ends of the multiple diversion channels 13a are all closed; it can also be, as shown in Figure 3, that the converging end 13c is constructed as one, and in the second direction, the same end of the multiple diversion channels 13a is connected to the same converging channel 13b, and the converging channel 13b is connected to the converging end 13c, and the other ends of the multiple diversion channels 13a are connected to another converging channel 13b, or the other ends of the multiple diversion channels 13a are all closed.

[0041] In other embodiments, multiple diversion channels 13a can be divided into multiple groups, each group of diversion channels 13a includes at least one diversion channel 13a. In the second direction, each group of diversion channels 13a has two ends, and at least one end of each group of diversion channels 13a is connected to a converging channel 13b so that the heat exchange medium in the diversion channel 13a can flow into the converging channel 13b. Multiple groups of diversion channels 13a correspond to multiple converging channels 13b, and multiple converging channels 13b can be staggered at both ends in the second direction to increase the flow channel length of the heat exchange medium, thereby increasing the flow time of the heat exchange medium, thereby increasing the heat exchange time, improving the heat exchange efficiency, and enhancing the heat exchange effect.

[0042] According to some embodiments of the present application, the cover plate 132 and the flow channel plate 131 are both stamped integral parts. In some embodiments, the case 11, the case cover 12, and the flow channel plate 131 are all stamped integral parts. The entire battery pack 1 is composed of stamped structural parts, which has a small number of parts. The case 11 and the case cover 12 are both integral structures, which can improve the sealing performance of the case 11 and the case cover 12 with the accommodating cavity 10a. The use of a stamping process for the case 11 and the case cover 12 can reduce mechanical processing operations, making the battery pack 1 simple and convenient to manufacture, with good production feasibility, high production efficiency, low labor costs, and low processing costs.

[0043] In some embodiments, the box cover 12 and the box body 11 can be stamped out of aluminum plates, steel plates, or steel-aluminum composite plates, which is not limited here.

[0044] In some embodiments, the box cover 12 and the box body 11 may be manufactured by sheet metal bending and welding, or by stamping.

[0045] According to some embodiments of the present application, the cover plate 132 and the flow channel plate 131 are welded or bonded. In some embodiments, the box body 11 and the flow channel plate 131, as well as the box cover 12 and the flow channel plate 131, can be connected by welding or bonding, ensuring that the connection between the box body 11 and the flow channel plate 131, as well as between the box cover 12 and the flow channel plate 131, is stable. The specific method can be selected according to the requirements of the battery pack 1 and is not limited here.

[0046] In some embodiments, the cover plate 132 and the flow channel plate 131 are bonded together by thermally conductive adhesive.

[0047] According to some embodiments of the present application, as shown in FIG2 , the housing assembly 13 further includes a reinforcement member 14, which is disposed on the cover plate 132 and surrounds the flow channel plate 131. In some embodiments, after the flow channel plate 131 and the cover plate 132 are mated, the reinforcement member 14 can be disposed on the cover plate 132 and surround the outer periphery of the flow channel plate 131, thereby improving the structural strength of the cover plate 132.

[0048] In some embodiments, the reinforcement member 14 is formed by a stamping process.

[0049] In some embodiments, the reinforcement 14 and the cover plate 132 are connected by welding to enhance the structural strength of the cover plate 132. The welding connection method requires fewer processing steps, which can reduce production costs and improve production efficiency.

[0050] According to some embodiments of the present application, the cover plate 132 is provided with a mounting portion for mounting to the vehicle body. The mounting portion is located on the side of the cover plate 132 facing the flow channel plate 131. In some embodiments, the cover plate 132 is fixed to the vehicle body to hoist the battery pack 1 to the vehicle body. Specifically, the vehicle body has a crossbeam, and the outer periphery of the cover plate 132 is provided with a mounting portion, which is suitable for mounting to the crossbeam of the vehicle body, thereby fixing the cover plate 132 to the vehicle body and further hoisting the battery pack 1 to the vehicle body.

[0051] The housing 10 for the battery pack 1 according to the present application is briefly described below.

[0052] As shown in Figures 4 and 5, the housing 10 according to the present application includes: a housing 11, a cover 12, and a housing assembly 13. The housing 11 and the cover 12 cooperate to define a receiving cavity 10a. The housing assembly 13 is constructed as the housing assembly 13 described in any of the above embodiments, and the cover plate 132 is constructed to be defined by at least one of the housing 11 and the cover 12. In some embodiments, the housing 10 of the battery pack 1 is composed of the housing 11 and the cover 12. By integrating the flow channel plate 131 into at least one of the housing 11 and the cover 12, the housing 11 and / or the cover 12 of the battery pack 1 simultaneously function to seal the receiving cavity 10a and to exchange heat with the battery cells 20 within the receiving cavity 10a. In some embodiments, the flow channel plate 131 can be disposed on the surface of the housing 11 and / or the housing cover 12 facing the accommodating cavity 10a to enhance the heat exchange effect between the heat exchange medium and the accommodating cavity 10a. Alternatively, the flow channel plate 131 can be disposed on the surface of the housing 11 and / or the housing cover 12 facing away from the accommodating cavity 10a to prevent the flow channel plate 131 from occupying the internal space of the accommodating cavity 10a. Since the housing 10 according to the present application is provided with the housing assembly 13 of the above-described embodiment, the housing 10 integrates the functions of sealing the accommodating cavity 10a and exchanging heat with the battery cells 20 within the accommodating cavity 10a, resulting in a higher level of functional integration.

[0053] According to some embodiments of the present application, as shown in FIG2 , the housing 10 further includes a reinforcement 14 and a bottom guard plate 15. The reinforcement 14 is disposed at the bottom of the housing 11 and surrounds the flow channel plate 131. After the flow channel plate 131 is mated with the cover plate 132, the reinforcement 14 can be disposed on the cover plate 132 and surround the outer periphery of the flow channel plate 131, thereby enhancing the structural strength of the cover plate 132. It is understood that to ensure the sealing effect of the accommodating cavity 10a, it is necessary to avoid opening a hole in the bottom of the housing 11 when installing the bottom guard plate 15. Therefore, a fixing hole can be provided in the reinforcement 14. The bottom guard plate 15 is fixed to the reinforcement 14 through the fixing hole and is located below the reinforcement 14. In this case, the bottom guard plate 15 is located at the bottom of the battery pack 1 to protect the bottom of the battery pack 1 and prevent the battery pack 1 from being bumped.

[0054] In some embodiments, the bottom guard plate 15 is generally made of steel plates and energy-absorbing materials, so that the bottom guard plate 15 has the function of shock-absorbing and protecting the box body 11.

[0055] The battery pack 1 according to the present application is briefly described below.

[0056] As shown in Figures 1 and 2, the battery pack 1 according to the present application includes: a shell 10 and a battery cell 20. The shell 10 is constructed as the shell 10 described in any of the above embodiments. The battery cell 20 is arranged in the accommodating cavity 10a. When the battery pack 1 is working, the battery cell 20 generates heat, and the heat is transferred in the accommodating cavity 10a. At this time, the heat exchange medium flowing along the surface of the shell 10 can exchange heat with the battery cell 20 in the accommodating cavity 10a to achieve cooling of the battery cell 20, thereby achieving cooling of the battery pack 1 and improving the safety of the battery pack 1. Since the battery pack 1 according to the present application is provided with the shell 10 of the above embodiment, the battery pack 1 has a simple structure, a small number of components, simple and convenient processing, good production feasibility, high production efficiency, low labor cost, low processing cost, and high safety in use.

[0057] In some embodiments of the present application, as shown in FIG2 , multiple battery cells 20 are stacked. In some embodiments, the multiple battery cells 20 can be stacked in multiple groups, each of which is configured as a blade cell 20 and extends along the second direction. This arrangement of the battery cells 20 can improve the energy density of the battery pack 1. Each battery cell 20 is provided with terminals at both ends in the second direction. Each group of battery cells 20 is stacked in the first direction. Two surfaces of each battery cell 20, extending from the housing 11 to the lid 12, contact the housing 11 and the lid 12, increasing the contact area between the heat exchange channel and the battery cells 20 and facilitating heat dissipation. The battery pack 1 also includes expansion beams 30 , which are positioned between at least one side of the multiple battery cells 20 in the stacking direction and the inner wall of the housing 10 . The expansion beams 30 are adapted to abut against the battery cells 20 to limit expansion, ensuring the dimensional stability and structural safety of the battery pack 1. One or more expansion beams 30 can be provided, and they abut against at least one side of at least one group of battery cells 20 in the stacking direction.

[0058] In some embodiments, the expansion beam 30 may be an aluminum profile or other metal materials.

[0059] In some embodiments, the expansion beam 30 is welded or bonded to the surface of the box body 11 facing the accommodating cavity 10 a .

[0060] In some embodiments, a thermally conductive adhesive layer is provided between the surface of the battery cell 20 facing the box body 11 and the surface of the box body 11 facing the battery cell 20, so that the box body 11 can conduct the heat of the battery cell 20 while carrying the battery cell 20. At this time, the box body 11 can be connected to the flow channel plate 131 to serve as the covering plate 132 to achieve heat dissipation of the battery cell 20.

[0061] In some embodiments, a thermally conductive adhesive layer is provided between the surface of the battery cell 20 facing the box cover 12 and the surface of the box cover 12 facing the battery cell 20, so that the box cover 12 can conduct the heat of the battery cell 20 while being connected to the battery cell 20. At this time, the box cover 12 can be connected to the flow channel plate 131 to serve as the sealing plate 132 to achieve heat dissipation of the battery cell 20. By providing the thermally conductive adhesive layer, the box cover 12 can provide a pulling force that is the same in magnitude and opposite in direction to the partial gravity of the battery cell 20, thereby reducing the load-bearing capacity of the box body 11.

[0062] The following briefly describes the vehicle 1000 according to the present application.

[0063] As shown in FIG7 , the vehicle 1000 according to the present application includes the battery pack 1 described in any one of the above embodiments. Since the vehicle 1000 according to the present application is provided with the battery pack 1 of the above embodiments, the vehicle 1000 is safer and more reliable to use.

[0064] In some embodiments of the present application, vehicle 1000 further includes a vehicle body, to which a cover 12 is fixedly connected, and the vehicle body and cover 12 together define a passenger compartment. The battery pack 1 is configured such that the cover 12 is fixed to the vehicle body and together with the vehicle body define the passenger compartment. In some embodiments, the cover 12 of the battery pack 1 faces the vehicle body and is directly connected thereto. In this case, the cover 12 acts as a vehicle floor, enabling the battery pack 1 to be hoisted onto the vehicle body. In this case, the cover 12 can be connected to the flow channel plate 131, allowing the cover 12 to function as the sealing plate 132 and dissipate heat from the battery cells 20. This allows the cover 12 to integrate the functions of cooperating with the housing 11 to encapsulate the battery cells 20, cooperating with the vehicle body to serve as a vehicle floor, and dissipating heat from the battery cells 20. The cover 12 is versatile, and installing the cover 12 can meet the various requirements of the battery pack 1 without requiring additional packaging, connection, or heat dissipation structures, thereby improving the processing and assembly efficiency of the battery pack 1.

[0065] The box cover 12 is fixed to the vehicle body so that the battery pack 1 can be hoisted on the vehicle body. Specifically, the vehicle body has a cross beam, at least part of which extends away from the passenger compartment and is configured as a connecting section. The box cover 12 is configured as a sealing plate 132 and a mounting portion is provided on the outer periphery of the box cover 12. The mounting portion is located on the side of the box cover 12 facing the flow channel plate 131, and the mounting portion is suitable for being installed to the connecting section of the vehicle body cross beam, thereby fixing the box cover 12 to the vehicle body and then hoisting the battery pack 1 on the vehicle body.

[0066] In some embodiments, since part of the flow channel plate 131 is formed with a reinforcement portion 1311, the portion of the box cover 12 connected to the flow channel plate 131 can protrude in a direction away from the box body 11, and the protruding portion of the box cover 12 is suitable for extending into the passenger compartment and constructed as a vehicle body floor. The mounting portion located at the outer periphery of the box cover 12 is connected to the connecting section of the vehicle body cross beam. The mounting portion and the connecting section can be connected by welding or by fasteners. The welding method can ensure good sealing when the box cover 12 is connected to the vehicle body.

[0067] To sum up, according to the box assembly 13 of the present application, its covering plate 132 can be the part that cooperates with the box body 11 and / or the box cover 12 and the flow channel plate 131, so that the box body 11 and / or the box cover 12 of the battery pack 1 integrate the structure of the covering plate 132 and have the function of heat exchange with the battery cell 20 in the accommodating cavity 10a, simplifying the structure of the box assembly 13 and enriching the functions of the box body 11 and / or the box cover 12, and can select the setting form of the covering plate 132 and the installation position of the flow channel plate 131 according to different needs, suitable for a variety of battery packs 1, can reduce the cost of the battery pack 1, improve production efficiency, and can simplify the structure of the battery pack 1 and reduce the weight of the battery pack 1.

[0068] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0069] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A box assembly for a battery pack, the battery pack (1) comprising a box body (11) and a box cover (12) which cooperate to define a receiving cavity (10a), characterized in that: The box assembly (13) comprises: A flow channel plate (131), wherein the flow channel plate (131) is formed with flow channel grooves; and A cover plate (132), the cover plate (132) being fixed to the flow channel plate (131) to cover the flow channel groove and define a heat exchange flow channel for circulating a heat exchange medium, the cover plate (132) being constructed to be defined by at least one of the box body (11) and the box cover (12).

2. The box assembly according to claim 1, characterized in that: At least a portion of the flow channel plate (131) protrudes in a direction away from the cover plate (132) to define the flow channel groove.

3. The box assembly according to claim 1 or 2, characterized in that: The cover plate (132) and the flow channel plate (131) are both stamped integral parts.

4. The box assembly according to any one of claims 1 to 3, characterized in that: The cover plate (132) and the flow channel plate (131) are welded or bonded.

5. The box assembly according to any one of claims 1 to 4, characterized in that: Also includes: A reinforcing member (14), wherein the reinforcing member (14) is disposed on the cover plate (132) and surrounds the flow channel plate (131).

6. The box assembly according to any one of claims 1 to 5, characterized in that: The cover plate (132) is provided with a mounting portion, the mounting portion being used for mounting on a vehicle body, and the mounting portion being located on a side of the cover plate (132) facing the flow channel plate (131).

7. A housing for a battery pack, characterized in that: include: A box body (11) and a box cover (12), wherein the box body (11) and the box cover (12) cooperate with each other to define a receiving chamber (10a); and A box body assembly (13), wherein the box body assembly (13) is constructed as the box body assembly (13) according to any one of claims 1 to 6, and the cover plate (132) is constructed to be defined by at least one of the box body (11) and the box cover (12).

8. The housing according to claim 7, characterized in that Also includes: A reinforcing member (14), the reinforcing member (14) being arranged at the bottom of the box body (11) and surrounding the flow channel plate (131); and A bottom guard plate (15), wherein the bottom guard plate (15) is fixed to the reinforcement member (14) and is located below the reinforcement member (14).

9. A battery pack, characterized in that: include: A housing (10), wherein the housing (10) is constructed as the housing (10) according to claim 7 or 8; and A battery core (20), wherein the battery core (20) is arranged in the accommodating cavity (10a).

10. The battery pack according to claim 9, characterized in that: The battery pack (1) is arranged in a vehicle (1000).

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