Shell, battery module, battery pack and electric equipment

Abstract

The utility model discloses a shell, a battery module, a battery pack and electric equipment, the shell comprises a coaming structure and a cooling structure, a connecting piece is arranged on the coaming structure, the cooling structure comprises a heat exchange part and a connecting part, the heat exchange part is arranged at the bottom of the coaming structure so as to define a mounting space together with the coaming structure, and the connecting part is arranged in the mounting space. The mounting space is used for mounting battery cells; the connecting part and the heat exchange part are arranged at an angle, and the heat exchange part is connected with the connecting piece through the connecting part. According to the technical scheme provided by the embodiment of the invention, the assembly efficiency of the battery module can be improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a housing, a battery module, a battery pack and an electrical device. Background Art

[0002] A battery module generally includes a battery cell, a panel structure and a cooling structure, which together form an installation space for installing the battery cell. However, in the related art, the connection between the cooling structure and the panel structure is relatively complicated, which affects the assembly efficiency of the battery module. Utility Model Content

[0003] In order to solve the above technical problems, the purpose of the present application is to provide a housing, a battery module, a battery pack and an electrical device.

[0004] A first aspect of the present application provides a shell, which includes an enclosure structure and a cooling structure. The enclosure structure is provided with a connecting piece, and the cooling structure includes a heat exchange part and a connecting part. The heat exchange part is arranged at the bottom of the enclosure structure to form an installation space together with the enclosure structure, and the installation space is used to install a battery cell; the connecting part is arranged at an angle to the heat exchange part, and the heat exchange part is connected to the connecting piece through the connecting part.

[0005] In the technical solution provided by the embodiment of the present application, the shell includes a panel structure and a cooling structure, and the cooling structure includes a heat exchange part and a connection part. The heat exchange part is arranged at the bottom of the panel structure to enclose an installation space together with the panel structure. The installation space is used to install battery cells. At the same time, the heat exchange part is also used to exchange heat with the battery cells in the installation space to dissipate heat and cool the battery cells. On this basis, a connector is provided on the panel structure, and the connection part is arranged at an angle with the heat exchange part. In this way, when the battery module is assembled, the heat exchange part can be connected to the connector through the connection part to realize the connection and fixation of the cooling structure and the panel structure. The whole connection process is relatively simple, which is conducive to improving the assembly efficiency of the battery module. In addition, when the battery module is assembled, the battery cell can be assembled in the panel structure first, and then the cooling structure can be connected and fixed to the panel structure. In this way, the cooling structure and the panel structure do not need to be supplied at the same time, which improves the flexibility of the battery module assembly. Compared with the more complicated connection method between the cooling structure and the enclosure structure in the related art, the enclosure structure and the cooling structure in the shell of the present application are connected by connecting parts and connecting pieces, which simplifies the connection method between the enclosure structure and the cooling structure, thereby improving the assembly efficiency of the battery module.

[0006] In some embodiments of the present application, in a preset direction, the number of connectors is at least two, the number of connecting parts is at least two, in the preset direction, at least two connectors are arranged on opposite sides of the enclosure structure, at least two connecting parts are arranged on opposite sides of the heat exchange part to connect with the connectors on the corresponding sides of the enclosure structure, and the preset direction is arranged perpendicular to the height direction of the enclosure structure. Here, when the connecting parts on the opposite sides of the heat exchange part are connected to the connecting parts on the corresponding sides of the enclosure structure, the connecting parts can also provide a limit for the enclosure structure in the preset direction, thereby improving the reliability of the enclosure structure when connected to the cooling structure.

[0007] In some embodiments of the present application, the connection portion includes a first section, and in a preset direction, the first section is tightly matched with the corresponding side of the enclosure structure. Here, the first section is tightly matched with the corresponding side of the enclosure structure, which can, on the one hand, limit the movement of the enclosure structure in the preset direction, further improve the reliability of the connection between the enclosure structure and the cooling structure; on the other hand, the enclosure structure can be pre-positioned in the preset direction, further improving the assembly efficiency of the battery module.

[0008] In some embodiments of the present application, the connecting portion includes a second section, the connecting piece is connected to the second section, the second section is arranged at an angle to the first section, and in the height direction of the enclosure structure, the second section is tightly fitted with the connecting piece on the corresponding side of the enclosure structure. Here, the connecting portion includes a second section, and the second section is arranged at an angle to the first section, and the connecting portion is connected to the connecting piece on the corresponding side of the enclosure structure through the second section, which is more convenient to operate and can improve the assembly efficiency between the enclosure structure and the cooling structure. On this basis, the second section is tightly fitted with the connecting piece on the corresponding side of the enclosure structure in the height direction of the enclosure structure, so that the second section can pre-position the connecting piece in the height direction of the enclosure structure, further improving the assembly efficiency of the battery module.

[0009] In some embodiments of the present application, a support member is provided at the bottom of the enclosure structure to support the battery cell, and a relief portion is provided on the heat exchange portion to avoid the support member. Here, the support member at the bottom of the enclosure structure can provide support to the battery cell together with the heat exchange portion, thereby improving the support effect on the battery cell. On this basis, a relief portion is provided on the heat exchange portion, and the relief portion avoids the support member, thereby avoiding interference between the support member and the heat exchange portion.

[0010] In some embodiments of the present application, the enclosure structure includes oppositely arranged side panels and oppositely arranged end panels. In the circumferential direction of the enclosure structure, adjacent side panels and end panels are sequentially connected, and the connectors are arranged on the oppositely arranged side panels. Here, the enclosure structure includes oppositely arranged side panels and oppositely arranged end panels, and the enclosure structure is more convenient to process. The side panels have a larger area than the end panels, and it is more convenient to arrange the connectors on the side panels.

[0011] In some embodiments of the present application, the heat exchange part includes a flow channel plate and a temperature plate, the temperature plate is arranged between the flow channel plate and the enclosure structure, and the connection part is arranged on the flow channel plate. Here, the battery cells in the installation space can transfer heat to the flow channel plate through the temperature plate, thereby improving the heat exchange efficiency between the battery cells and the heat exchange part. The temperature plate is arranged between the flow channel plate and the enclosure structure, and it is more convenient to arrange the connection part on the flow channel plate.

[0012] In some embodiments of the present application, a flow channel inlet and a flow channel outlet are provided on the flow channel plate, the flow channel inlet and the flow channel outlet are arranged on the first side of the flow channel plate, and the connecting portion is arranged on the second side of the flow channel plate. Here, the flow channel inlet and the flow channel outlet are arranged on the first side of the flow channel plate, which can reduce the space occupied by the flow channel inlet and the flow channel outlet. On this basis, the connecting portion is arranged on the second side of the flow channel plate, so that the flow channel inlet and the flow channel outlet can be located on different sides of the flow channel plate from the connecting portion, avoiding interference between the flow channel inlet and the flow channel outlet and the connecting portion.

[0013] In some embodiments of the present application, the housing further comprises a detachable connection structure, which is arranged between the connecting portion and the connecting piece to connect the connecting portion and the connecting piece. Here, the connecting portion and the connecting piece are connected by the detachable connection structure, which can make the housing more convenient to disassemble and assemble.

[0014] In some embodiments of the present application, the detachable connection structure includes a first connection hole, a second connection hole and a fastener, one of the first connection hole and the second connection hole is set on the connection part, the other of the first connection hole and the second connection hole is set on the connection piece, and the fastener passes through the first connection hole and the second connection hole in sequence to connect the connection part and the connection piece. Here, the detachable connection structure includes the first connection hole, the second connection hole and the fastener, the structure is relatively simple, and the operation is relatively convenient.

[0015] A second aspect of the present application provides a battery module, comprising a battery cell and the housing of any one of the first aspects, wherein the battery cell is installed in the housing.

[0016] In the technical solution of the embodiment of the present application, since the battery includes the shell of the first aspect, when the battery module is assembled, the enclosure structure and the cooling structure in the shell are connected by connecting parts and connecting members, which simplifies the connection structure between the enclosure structure and the cooling structure, thereby improving the assembly efficiency of the battery.

[0017] A third aspect of the present application provides a battery pack, comprising a case and the battery modules of the second aspect, wherein the number of the battery modules is at least two, and at least two battery modules are installed in the case.

[0018] In the technical solution of the embodiment of the present application, since the battery includes the battery module of the second aspect, when the battery module is assembled, the enclosure structure and the cooling structure in the shell are connected by connecting parts and connecting parts, which simplifies the connection structure between the enclosure structure and the cooling structure, thereby improving the assembly efficiency of the battery module.

[0019] A fourth aspect of the present application provides an electrical device, comprising an electrical device and the battery pack of the third aspect, wherein the battery pack is electrically connected to the electrical device.

[0020] In the technical solution of the embodiment of the present application, since the battery pack of the third aspect is included, when the battery modules in the battery pack are assembled, the enclosure structure and the cooling structure in the shell are connected by connecting parts and connecting members, which simplifies the connection structure between the enclosure structure and the cooling structure, thereby improving the assembly efficiency of the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0022] Figure 1 An axonometric view of a housing provided in an embodiment of the present application;

[0023] Figure 2 A front view of a housing provided in an embodiment of the present application;

[0024] Figure 3 for Figure 2 The enlarged schematic diagram of point A in the middle;

[0025] Figure 4 An axonometric diagram of a cooling structure in a housing provided in an embodiment of the present application;

[0026] Figure 5 A front view of a cooling structure in a housing provided in an embodiment of the present application;

[0027] Figure 6 A left view of a cooling structure in a housing provided in an embodiment of the present application;

[0028] Figure 7 for Figure 6 The enlarged schematic diagram of point B in the middle;

[0029] Figure 8 A top view of a cooling structure in a housing provided in an embodiment of the present application;

[0030] Fig. 9 A bottom view of a cooling structure in a housing provided in an embodiment of the present application;

[0031] Fig.10 An axonometric view of the enclosure structure in the shell provided in an embodiment of the present application;

[0032] Fig.11 A top view of the enclosure structure in the shell provided in an embodiment of the present application;

[0033] Fig.12 A schematic diagram of the structure of a battery module provided in an embodiment of the present application;

[0034] Fig.13 A schematic diagram of the structure of a battery pack provided in an embodiment of the present application.

[0035] Description of reference numerals:

[0036] 1-battery module; 11-enclosure structure; 111-connector; 1111-connecting part; 1112-tightening part; 112-supporting part; 113-side plate; 114-end plate; 12-cooling structure; 121-heat exchange part; 1211-flow channel plate; 1212-temperature balancing plate; 1213-flow channel inlet; 1214-flow channel outlet; 1215-avoidance part; 122-connecting part; 1221-first section; 1222-second section; 13-battery cell; 14-detachable connection structure; 141-first connection hole; 142-second connection hole; 143-fastener; 2-casing. DETAILED DESCRIPTION

[0037] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions.

[0039] In the description of the embodiments of the present application, the technical terms "first", "second", "third", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0040] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0041] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0042] In the description of the embodiments of the present application, the orientation or position relationship indicated by technical terms such as "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed, operated or used in a specific orientation. Therefore, they should not be understood as limitations on the embodiments of the present application.

[0043] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0044] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the technical term "contact" should be understood in a broad sense, and may be direct contact or contact through an intermediate medium layer. It may be contact with essentially no interaction force between the two contacting parties, or it may be contact with interaction force between the two contacting parties.

[0045] Below, this application is described in detail.

[0046] Battery modules are increasingly used in life and industry. Battery modules are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but are also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, and aerospace and other fields. With the continuous expansion of the application field of battery modules, the market demand is also constantly expanding.

[0047] A battery module generally includes a battery cell and a shell, wherein the shell includes a panel structure and a cooling structure, and the panel structure and the cooling structure together enclose an installation space for installing the battery cell. In the related art, the cooling structure and the panel structure are generally fixed by cold pressing.

[0048] The inventor of this application noticed that when the cooling structure is connected and fixed to the enclosure structure by cold pressing, the entire connection process is relatively complicated. In addition, the cooling structure and the enclosure structure need to be supplied at the same time. When assembling the battery module, the cooling structure needs to be connected and fixed to the enclosure structure first, and then the battery cell needs to be assembled in the shell, which reduces the flexibility of the battery module assembly. The above situations will affect the efficiency of battery module assembly.

[0049] The inventor of the present application has discovered through research that a connector 111 is provided on the enclosure structure 11, a heat exchange portion 121 and a connection portion 122 are provided on the cooling structure 12, the enclosure structure 11 and the heat exchange portion 121 are used together to enclose an installation space, and the connector 111 and the connection portion 122 are used to connect and fix the enclosure structure 11 and the cooling structure 12. This can not only simplify the connection structure between the enclosure structure 11 and the cooling structure 12, but also improve the flexibility of the battery module 1 during assembly.

[0050] Based on this design concept, the inventor of this application designed a housing, referring to Figure 1 , Figure 2 and Fig.12 The shell includes a panel structure 11 and a cooling structure 12. A connector 111 is provided on the panel structure 11. The cooling structure 12 includes a heat exchange portion 121 and a connecting portion 122. The heat exchange portion 121 is arranged at the bottom of the panel structure 11 to form an installation space together with the panel structure 11. The installation space is used to install a battery cell 13. The connecting portion 122 is arranged at an angle to the heat exchange portion 121, and the heat exchange portion 121 is connected to the connector 111 through the connecting portion 122.

[0051] In the embodiment of the present application, the function of the enclosure structure 11 is to enclose the battery cells 13 in the circumferential direction of the shell. Therefore, the structural form of the enclosure structure 11 is possible in many ways. For example, the enclosure structure can be a split structure or an integrated structure, and the embodiment of the present application does not limit this. In addition, under normal circumstances, the shape of the space enclosed by the enclosure structure 11 in the circumferential direction of the shell needs to be compatible with the overall arrangement of the battery cells 13. For example, when the battery cells 13 are arranged in a cylindrical shape as a whole, the shape of the space enclosed by the enclosure structure 11 in the circumferential direction of the shell is also cylindrical. Figure 1 , Figure 2 and Fig.12 In a possible embodiment of the present application, the battery cells 13 are arranged in a rectangular shape as a whole, and correspondingly, the space enclosed by the enclosure structure 11 in the circumferential direction of the shell is also arranged in a rectangular shape.

[0052] In the embodiment of the present application, the functions of the heat exchange part 121 on the cooling structure 12 mainly include the following two points: one is to dissipate heat and cool down the battery cells 13 in the installation space, and the other is to provide support for the battery cells 13 in the installation space. Therefore, the heat exchange part 121 has a variety of structural forms. For example, the heat exchange part 121 can be a liquid cooling plate, an air cooling plate, or a composite cooling plate. The composite cooling plate is provided with both liquid cooling channels and air cooling channels. The embodiment of the present application does not limit this. In a possible embodiment of the present application, the heat exchange part 121 is a liquid cooling plate.

[0053] In the embodiment of the present application, the function of the connecting portion 122 on the cooling structure 12 is to connect with the connecting piece 111 on the enclosure structure 11. Therefore, the structural form of the connecting portion 122 has many possibilities. For example, the connecting portion 122 can be a block structure, a strip structure, or a plate structure, which is not limited in the embodiment of the present application. Figure 4 , Figure 5 , Figure 8 and Fig. 9 In a possible embodiment of the present application, the connecting portion 122 is a plate-shaped structure, and the connecting portion 122 is extended along the length direction of the heat exchange portion 121.

[0054] In the embodiment of the present application, the connection between the connecting portion 122 and the heat exchange portion 121 may be formed in one piece, clamped, bonded, welded, connected with fasteners, etc., and the embodiment of the present application does not limit this. Figure 4 , Figure 5 , Figure 8 and Fig. 9 In a possible embodiment of the present application, the connecting portion 122 and the heat exchange portion 121 are bent and formed as an integral unit.

[0055] In the embodiment of the present application, the function of the connector 111 is to connect with the connecting portion 122 on the cooling structure 12. Therefore, the structural form of the connector 111 is possible in many ways. For example, the connector 111 can be a block structure, a strip structure, or a plate structure, which is not limited in the embodiment of the present application. Fig.10 and Fig.11 In a possible embodiment of the present application, the connecting member 111 is a plate-shaped structure, and the connecting member 111 is extended along the length direction of the enclosure structure 11.

[0056] In the embodiment of the present application, the connection between the connecting member 111 and the enclosure structure 11 can be integrally formed, clamped, bonded, welded, connected with fasteners, etc., and the embodiment of the present application does not limit this. In a possible embodiment of the present application, the connecting member 111 and the enclosure structure 11 are welded.

[0057] In the embodiment of the present application, the angle between the connecting portion 122 and the heat exchange portion 121 may be various, for example, the angle between the connecting portion 122 and the heat exchange portion 121 may be 30 degrees, 60 degrees, or 90 degrees, which is not limited in the embodiment of the present application. Figure 3 and Figure 6 In a possible embodiment of the present application, the angle between the connecting portion 122 and the heat exchange portion 121 is 90 degrees.

[0058] In the technical solution provided in the embodiment of the present application, the shell includes a panel structure 11 and a cooling structure 12. The cooling structure 12 includes a heat exchange part 121 and a connecting part 122. The heat exchange part 121 is arranged at the bottom of the panel structure 11 to form an installation space together with the panel structure 11. The installation space is used to install the battery cell 13. At the same time, the heat exchange part 121 is also used to exchange heat with the battery cell 13 in the installation space to dissipate heat and cool the battery cell 13.

[0059] On this basis, a connector 111 is provided on the enclosure structure 11, and the connecting portion 122 is set at an angle to the heat exchange portion 121. In this way, when the battery module 1 is assembled, the heat exchange portion 121 can be connected to the connector 111 through the connecting portion 122 to achieve the connection and fixation of the cooling structure 12 and the enclosure structure 11. The entire connection process is relatively simple, which can improve the assembly efficiency of the battery module 1. In addition, when the battery module 1 is assembled, the battery cell 13 can be assembled in the enclosure structure 11 first, and then the cooling structure 12 can be connected and fixed to the enclosure structure 11. In this way, the cooling structure 12 and the enclosure structure 11 do not need to be supplied at the same time, which improves the flexibility of the battery module 1 when assembling.

[0060] Compared with the relatively complicated connection method between the cooling structure 12 and the enclosure structure 11 in the related art, the enclosure structure 11 and the cooling structure 12 in the shell of the present application are connected by a connecting part 122 and a connecting piece 111, which simplifies the connection method between the enclosure structure 11 and the cooling structure 12, thereby improving the assembly efficiency of the battery module 1.

[0061] In the embodiment of the present application, the number of the connecting members 111 is possible in many ways. For example, the number of the connecting members 111 can be one, two, or more, and the embodiment of the present application does not limit this. When the number of the connecting members 111 is two or more, each connecting member 111 can be arranged on one side of the enclosure structure 11, or can be arranged on two adjacent sides of the enclosure structure 11, or can be arranged on two opposite sides of the enclosure structure 11, and the embodiment of the present application does not limit this.

[0062] In the embodiment of the present application, the number of the connecting parts 122 has multiple possibilities. For example, the number of the connecting parts 122 can be one, two, or more, and the embodiment of the present application does not limit this. When the number of the connecting parts 122 is two or more, each connecting part 122 can be arranged on one side of the heat exchange part 121, or can be arranged on the adjacent two sides of the heat exchange part 121, or can be arranged on the opposite two sides of the heat exchange part 121, and the embodiment of the present application does not limit this. It should be noted that, under normal circumstances, the arrangement position of the connecting part 122 needs to be compatible with the arrangement position of the connecting member 111 to ensure that when the cooling structure 12 is connected to the enclosure structure 11, the connecting part 122 can be connected to the connecting member 111 on the corresponding side of the enclosure structure 11. For example, when each connecting member 111 is arranged on the adjacent two sides of the enclosure structure 11, each connecting part 122 is arranged on the adjacent two sides of the heat exchange part 121.

[0063] In the embodiment of the present application, when the connector 111 is connected to the connecting portion 122, there are many possible quantitative relationships between the connectors 111 and the connecting portion 122. For example, the connectors 111 may correspond to the connecting portions 122 one by one; or, one connector 111 may be connected to multiple connecting portions 122 at the same time; or, multiple connectors 111 may be connected to one connecting portion 122 at the same time. Figure 1 and Figure 2 In a possible embodiment of the present application, the number of the connecting member 111 and the number of the connecting portion 122 are both two. When the connecting member 111 and the connecting portion 122 are connected, the connecting member 111 and the connecting portion 122 correspond one to one.

[0064] In the present application, refer to Figure 8 , Fig. 9 , Fig.10 and Fig.11 , the number of the connecting members 111 is at least two, the number of the connecting parts 122 is at least two, in a preset direction, at least two connecting members 111 are arranged on opposite sides of the enclosure structure 11, and at least two connecting parts 122 are arranged on opposite sides of the heat exchange part 121 to connect with the connecting members 111 on the corresponding sides of the enclosure structure 11, and the preset direction is arranged perpendicular to the height direction of the enclosure structure. Here, the number of the connecting members 111 is at least two, and the number of the connecting parts 122 is at least two, which can enhance the connection strength between the connecting members 111 and the connecting parts 122, thereby improving the structural strength of the shell. On this basis, at least two connecting parts 111 are arranged on opposite sides of the enclosure structure 11, and at least two connecting parts 122 are arranged on opposite sides of the heat exchange part 121. In this way, when the connecting part 122 is connected to the connecting part 111, the enclosure structure 11 can be located between the connecting parts 122 on opposite sides of the heat exchange part 121. In a preset direction, the connecting part 122 can limit the movement space of the enclosure structure 11, thereby improving the connection reliability between the enclosure structure 11 and the cooling structure 12.

[0065] In the embodiment of the present application, there are many possible orientation designs of the preset direction. For example, the preset direction can be the length direction of the enclosure structure 11 or the width direction of the enclosure structure 11. The embodiment of the present application does not limit this. Figure 8 and Fig. 9 In a possible embodiment of the present application, the preset direction is the width direction of the enclosure structure 11.

[0066] In the embodiment of the present application, in order to further improve the limiting effect of the enclosure structure 11, refer to Figure 1 and Figure 6 The connecting portion 122 includes a first section 1221 , and in a preset direction, the first section 1221 is tightly fitted with the corresponding side of the enclosure structure 11 .

[0067] In the embodiment of the present application, the function of the first section 1221 is to fit tightly with the enclosure structure 11 in a preset direction. Therefore, the structural form of the first section 1221 has many possibilities. For example, the first section 1221 can be a plate-like structure, a block-like structure, or a strip-like structure, and the embodiment of the present application does not limit this.

[0068] In the embodiment of the present application, the first section 1221 and the corresponding side of the enclosure structure 11 can be directly or indirectly tightly matched, and the embodiment of the present application is not limited. Figure 3In a possible embodiment of the present application, the first section 1221 is indirectly tightly matched with the corresponding side of the enclosure structure 11. Specifically, the connecting member 111 includes a connecting section 1111 and a tight section 1112, and the tight section 1112 is arranged on the corresponding side of the enclosure structure 11. The first section 1221 is tightly matched with the corresponding side of the enclosure structure 11 through the tight section 1112. In this way, the stress strength of the enclosure structure 11 can be reduced, the enclosure structure 11 can be prevented from being deformed due to excessive stress, and the reliability of the enclosure structure 11 can be improved.

[0069] In the embodiment of the present application, when the first section 1221 and the pressing section 1112 are pressed together, the first section 1221 and the pressing section 1112 can be in line contact or surface contact, and the embodiment of the present application does not limit this. When the first section 1221 and the pressing section 1112 are in surface contact, the first section 1221 can be in full contact with the pressing section 1112 or in part with the pressing section 1112, and the embodiment of the present application does not limit this. Figure 3 In a possible embodiment of the present application, the first section 1221 is in surface contact with the abutting section 1112. In this way, the limiting effect of the enclosure structure 11 can be improved.

[0070] In the embodiment of the present application, the connecting portion 122 includes a first section 1221, and the first section 1221 is tightly matched with the corresponding side of the enclosure structure 11 in a preset direction. In this way, when the connecting portion 122 is connected to the connecting member 111, the enclosure structure 11 is restricted from moving in the preset direction under the action of the pressing force provided by the first section 1221, which further improves the connection reliability between the enclosure structure 11 and the cooling structure 12. In addition, when the battery module 1 is assembled, the first section 1221 can also pre-position the enclosure structure 11 in the preset direction, further improving the assembly efficiency of the battery module 1.

[0071] In the embodiment of the present application, when the connecting portion 122 is connected to the connecting member 111 , the connecting portion 122 may be connected to the connecting member 111 through the first section 1221 , or may be connected to the connecting member 111 through the remaining portion of the connecting portion 122 .

[0072] Reference Figure 3 and Figure 6 In a possible embodiment of the present application, the connecting portion 122 includes a second section 1222, the connecting member 111 is connected to the second section 1222, the second section 1222 is arranged at an angle to the first section 1221, and in the height direction of the enclosure structure 11, the second section 1222 is tightly fitted with the connecting member 111 on the corresponding side of the enclosure structure.

[0073] In the embodiment of the present application, the function of the second section 1222 is to connect with the connecting member 111. Therefore, the structural form of the second section 1222 has many possibilities. For example, the second section 1222 can be a plate-like structure, a block-like structure, or a strip-like structure, and the embodiment of the present application does not limit this.

[0074] In the embodiment of the present application, when the second section 1222 is tightly fitted with the connector 111, the second section 1222 and the connector 111 may be in line contact or surface contact, and the embodiment of the present application does not limit this. When the second section 1222 and the connector 111 are in surface contact, the second section 1222 may be in full contact with the connector 111 or may be in partial contact with the connector 111, and the embodiment of the present application does not limit this. Figure 3 In a possible embodiment of the present application, in order to improve the limiting effect of the connecting member 111, the first section 1221 and the pressing section 1112 are in surface contact.

[0075] Reference Figure 3 In the embodiment of the present application, the second section 1222 is tightly matched with the connecting section 1111 on the connecting member 111. In order to ensure reliable contact between the second section 1222 and the connecting section 1111, the extension direction of the second section 1222 is parallel to the extension direction of the connecting member 111.

[0076] In the embodiment of the present application, the angle between the first segment 1221 and the second segment 1222 may be various, for example, the angle between the first segment 1221 and the second segment 1222 may be 30 degrees, 60 degrees, or 90 degrees, which is not limited in the embodiment of the present application. Figure 6 In a possible embodiment of the present application, the angle between the first section 1221 and the second section 1222 is 90 degrees.

[0077] In the embodiment of the present application, the connecting portion 122 includes a second section 1222, the second section 1222 is arranged at an angle to the first section 1221, and the connecting member 111 is connected to the second section 1222. In this way, the corresponding side of the enclosure structure 11 will not interfere with the connection, which facilitates the connection operation between the connecting portion 122 and the connecting member 111, and improves the assembly efficiency between the enclosure structure 11 and the cooling structure 12. On this basis, in the height direction of the enclosure structure 11, the second section 1222 is tightly matched with the connecting member 111 on the corresponding side of the enclosure structure 11. In this way, when the battery module 1 is assembled, in the height direction of the enclosure structure 11, the second section 1222 can achieve the pre-positioning of the connecting member 111 by tightly matching with the connecting member 111, which further improves the assembly efficiency of the battery module 1.

[0078] Reference Figure 3 , Fig.10 and Fig.11 In a possible embodiment of the present application, a support member 112 is provided at the bottom of the enclosure structure 11 to support the battery cell 13 , and an avoidance portion 1215 is provided on the heat exchange portion 121 to avoid the support member 112 .

[0079] In the embodiment of the present application, the function of the support member 112 is to provide support for the battery cell 13. Therefore, the structural form of the support member 112 has many possibilities. For example, the support member 112 can be a block structure, a rod structure, or a plate structure, and the embodiment of the present application does not limit this.

[0080] Reference Figure 3 , Fig.10 and Fig.11 In a possible embodiment of the present application, the support member 112 is a plate-like structure, and the support member 112 is formed by bending the bottom of the enclosure structure 11. Here, the support member 112 is formed by bending the bottom of the enclosure structure 11. On the one hand, the support member 112 is more convenient to process, and on the other hand, the structural strength of the support member 112 can be enhanced.

[0081] In the embodiment of the present application, the avoidance portion 1215 serves to avoid the support member 112. Therefore, the support member 112 may have a variety of structural forms. For example, the avoidance portion 1215 may be an avoidance groove or an avoidance notch, and the embodiment of the present application does not limit this.

[0082] In the embodiment of the present application, the support member 112 at the bottom of the enclosure structure 11 can provide support to the battery cell 13 together with the heat exchange portion 121, thereby improving the support effect on the battery cell 13 and improving the stability of the battery module 1. On this basis, the heat exchange portion 121 is provided with an avoidance portion 1215, which avoids the support member 112 to avoid interference between the support member 112 and the heat exchange portion 121.

[0083] In the embodiment of the present application, in order to facilitate the processing of the enclosure structure 11, the enclosure structure 11 can adopt a split structure. When the enclosure structure 11 adopts a split structure, the structural design of the enclosure structure 11 has many possibilities. For example, the enclosure structure 11 can include two L-shaped plates, and the two L-shaped plates are connected end to end in sequence to form the enclosure structure 11; or the enclosure structure 11 can also include two arc-shaped plates, and the two arc-shaped plates are connected to form the enclosure structure 11. The embodiment of the present application does not limit this.

[0084] Reference Fig.10 and Fig.11In a possible embodiment of the present application, the enclosure structure 11 includes relatively arranged side panels 113 and relatively arranged end panels 114. In the circumferential direction of the enclosure structure 11, adjacent side panels 113 and end panels 114 are connected in sequence, and the connecting members 111 are provided on the relatively arranged side panels 113.

[0085] In the embodiment of the present application, the end plate 114 and the side plate 113 may adopt the same structural design or different structural designs, and the embodiment of the present application does not limit this.

[0086] In the embodiment of the present application, the connection between the side panel 113 and the end panel 114 may be integrally formed, clamped, bonded, welded, connected with fasteners, etc., and the embodiment of the present application does not impose any limitation on this.

[0087] In the embodiment of the present application, under normal circumstances, it is inevitable that there will be processing errors during the processing of the enclosure structure 11, and the processing errors will affect the installation of the battery cell 13. The enclosure structure 11 includes relatively arranged side panels 113 and relatively arranged end panels 114. In the circumferential direction of the enclosure structure 11, adjacent side panels 113 and end panels 114 are connected in sequence. In this way, the relative positions of the side panels 113 and the end panels 114 can be adjusted according to the actual assembly situation when connected, so as to offset the impact of the enclosure structure 11 on the installation of the battery cell 13 due to the processing errors, so that the assembly of the battery module 1 can proceed smoothly. On this basis, the connector 111 is arranged on the relatively arranged side panels 113. Under normal circumstances, the side panels 113 have a larger area than the end panels 114, and it is more convenient to arrange the connector 111 on the side panels 113.

[0088] In the embodiment of the present application, when the battery cell 13 is installed in the installation space, support for the battery cell 13 can be provided by the heat exchange part 121 or by both the heat exchange part 121 and the enclosure structure 11, and the embodiment of the present application does not limit this.

[0089] Reference Figure 3 and Figure 7 In the embodiment of the present application, the heat exchange part includes a flow channel plate 1211 and a temperature averaging plate 1212. The temperature averaging plate 1212 is arranged between the flow channel plate 1211 and the enclosure structure 11, and the connecting part 122 is arranged on the flow channel plate.

[0090] In the embodiment of the present application, the connection between the flow channel plate 1211 and the temperature equalizing plate 1212 can be clamped, bonded, welded, fastener connected, etc., and the embodiment of the present application is not limited to this.

[0091] In the embodiment of the present application, there are many possible materials for the flow channel plate 1211. The flow channel plate 1211 can be an aluminum plate or a copper plate, and the embodiment of the present application does not limit this.

[0092] In the embodiment of the present application, the function of the temperature equalizing plate 1212 is to improve the heat dissipation efficiency of the battery cell 13. Therefore, the structure of the temperature equalizing plate 1212 has many possibilities. For example, the temperature equalizing plate 1212 can be a conventional temperature equalizing plate or an ultra-thin temperature equalizing plate, and the embodiment of the present application does not limit this.

[0093] In the embodiment of the present application, the heat exchange portion 121 includes a flow channel plate 1211 and a temperature averaging plate 1212. The temperature averaging plate 1212 is disposed between the flow channel plate 1211 and the enclosure structure 11. In this way, the battery cells 13 in the installation space can transfer heat to the flow channel plate 1211 through the temperature averaging plate 1212, thereby improving the heat exchange efficiency between the battery cells 13 and the heat exchange portion 121. The connecting portion 122 is disposed on the flow channel plate 1211. During processing, the flow channel plate 1211 can be bent to form the connecting portion 122, which is convenient for processing.

[0094] Reference Figure 4 and Figure 6 In the embodiment of the present application, a flow channel inlet 1213 and a flow channel outlet 1214 are provided on the flow channel plate 1211 , the flow channel inlet 1213 and the flow channel outlet 1214 are arranged on a first side of the flow channel plate 1211 , and the connecting portion 122 is arranged on a second side of the flow channel plate 1211 .

[0095] In the embodiment of the present application, when the flow channel plate 1211 is in use, a coolant circulates in the flow channel plate 1211 to dissipate heat and cool down the battery cells 13. The coolant is injected into the flow channel plate 1211 through the flow channel inlet 1213 and flows out of the flow channel plate 1211 through the flow channel inlet 1213.

[0096] In the embodiment of the present application, the first side and the second side on the flow channel plate 1211 are different sides, and the positions of the first side and the second side can be interchanged, which is not limited in the embodiment of the present application.

[0097] In the embodiment of the present application, the flow channel inlet 1213 and the flow channel outlet 1214 are arranged on the first side of the flow channel plate 1211, which can reduce the space occupied by the flow channel inlet 1213 and the flow channel outlet 1214, thereby improving the energy density of the battery module 1. On this basis, the connecting portion 122 is arranged on the second side of the flow channel plate 1211, and the first side and the second side are different sides on the flow channel plate 1211, so that the connecting portion 122 can avoid interference with the flow channel inlet 1213 and the flow channel outlet 1214.

[0098] In the embodiment of the present application, the connection between the connecting portion 122 and the connecting member 111 may be a snap connection, bonding, welding, a fastener connection, etc., and the embodiment of the present application does not limit this.

[0099] Reference Figure 1 , Figure 4 and Fig.10 In a possible embodiment of the present application, the housing further includes a detachable connection structure 14, which is disposed between the connection portion 122 and the connection member 111 to connect the connection portion 122 and the connection member 111. The connection portion 122 and the connection member 111 are connected via the detachable connection structure 14, which can make the disassembly and assembly of the battery module 1 more convenient.

[0100] In the embodiment of the present application, the function of the detachable connection structure 14 is to connect the connection part 122 with the connection member 111. Therefore, the structural design of the detachable connection structure 14 has many possibilities. For example, the detachable connection structure 14 may include a buckle and a slot, one of which is provided on the connection part 122, and the other of which is provided on the connection member 111. When the connection part 122 is connected to the connection member 111, the buckle and the slot are engaged with each other.

[0101] Reference Figure 1 , Figure 4 and Fig.10 In a possible embodiment of the present application, the detachable connection structure 14 includes a first connection hole 141, a second connection hole 142 and a fastener 143, one of the first connection hole 141 and the second connection hole 142 is set on the connection part 122, the other of the first connection hole 141 and the second connection hole 142 is set on the connection member 111, and the fastener 143 passes through the first connection hole 141 and the second connection hole 142 in sequence to connect the connection part 122 and the connection member 111. Here, the detachable connection structure 14 includes the first connection hole 141, the second connection hole 142 and the fastener 143, the structure is relatively simple, and the operation is relatively convenient.

[0102] In the embodiment of the present application, the fasteners 143 may be fasteners 143 of the same specification. In this way, the versatility of the assembly parts can be increased, thereby reducing the investment in assembly parts.

[0103] On this basis, the present application embodiment also provides a battery module 1, referring to Fig.12 The battery module 1 further includes a battery cell 13 and a shell, and the battery cell 13 is installed in the shell.

[0104] In the embodiment of the present application, the battery cell 13 may be a secondary battery. A secondary battery refers to a battery cell 13 that can be continuously used by activating active materials by charging after the battery cell 13 is discharged.

[0105] The battery cell 13 can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead storage battery, etc., which is not limited in the embodiments of the present application.

[0106] The battery module 1 provided in the embodiment of the present application includes the shell of the embodiment of the present application. When the battery module 1 is assembled, the enclosure structure 11 and the cooling structure 12 are connected via the connecting portion 122 and the connecting member 111, thereby simplifying the connection structure between the enclosure structure 11 and the cooling structure 12, thereby improving the assembly efficiency of the battery module 1.

[0107] On this basis, the present application embodiment also provides a battery pack, referring to Fig.13 The battery pack includes a box body 2 and a battery module 1. The number of the battery modules 1 is at least two, and at least two battery modules 1 are installed in the box body 2.

[0108] In the embodiment of the present application, the number of battery modules 1 in the box body 2 can be various. For example, the number of shells in the box body 2 can be two, three, or five, which is not limited in the embodiment of the present application. Fig.12 In a possible embodiment of the present application, there are two battery modules 1 in the box 2, and the two battery modules 1 are arranged side by side.

[0109] In the embodiment of the present application, when the battery module 1 is arranged in the box body 2, the battery module 1 and the box body 2 can be fixed by means of snap connection, bonding, welding, fastener connection, etc., and the embodiment of the present application does not limit this.

[0110] The battery pack provided in the embodiment of the present application includes the battery module 1 of the embodiment of the present application. When the shell of the battery module 1 is assembled, the enclosure structure 11 and the cooling structure 12 are connected via the connecting portion 122 and the connecting member 111, thereby simplifying the connection structure between the enclosure structure 11 and the cooling structure 12, thereby improving the assembly efficiency of the battery module 1.

[0111] In addition, an embodiment of the present application also provides an electrical device, which includes an electrical device and a battery pack, and the battery pack is electrically connected to the electrical device.

[0112] In the embodiments of the present application, the electric device may be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, etc. Among them, the electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc., and the spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc.

[0113] In the embodiment of the present application, the electrical device may be an electric vehicle, the electrical appliances may be a drive motor, a control component, an onboard air conditioner, an onboard entertainment system, etc. in the electric vehicle, and the battery pack may be arranged on the bottom side of the vehicle body.

[0114] The electrical equipment provided in the embodiment of the present application includes the battery pack of the embodiment of the present application. When the battery module 1 in the battery pack is assembled, the enclosure structure 11 and the cooling structure 12 are connected via the connecting portion 122 and the connecting member 111, thereby simplifying the connection structure between the enclosure structure 11 and the cooling structure 12, thereby improving the assembly efficiency of the battery module 1.

[0115] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application is described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way.

Claims

1. A housing, characterized in that: include: A panel structure, wherein a connecting piece is provided on the panel structure; A cooling structure, comprising a heat exchange portion and a connection portion, wherein the heat exchange portion is arranged at the bottom of the enclosure structure to enclose an installation space together with the enclosure structure, and the installation space is used to install a battery cell; The connecting portion is arranged at an angle with the heat exchanging portion, and the heat exchanging portion is connected to the connecting member via the connecting portion.

2. The housing according to claim 1, characterized in that The number of the connecting members is at least two, the number of the connecting parts is at least two, in a preset direction, at least two of the connecting members are arranged on opposite sides of the enclosure structure, and at least two of the connecting parts are arranged on opposite sides of the heat exchange part to connect with the connecting members on the corresponding sides of the enclosure structure, and the preset direction is arranged perpendicular to the height direction of the enclosure structure.

3. The housing according to claim 2, characterized in that: The connecting portion includes a first section, and in the preset direction, the first section is tightly matched with a corresponding side of the enclosure structure.

4. The housing according to claim 3, characterized in that: The connecting portion includes a second section, the connecting member is connected to the second section, the second section is arranged at an angle to the first section, and in the height direction of the enclosure structure, the second section is tightly fitted with the connecting member on the corresponding side of the enclosure structure.

5. The housing according to claim 1, characterized in that: A support member is provided at the bottom of the enclosure structure to support the battery cell, and an avoidance portion is provided on the heat exchange portion to avoid the support member.

6. The housing according to any one of claims 1 to 5, characterized in that: The enclosure structure includes oppositely arranged side plates and oppositely arranged end plates. In the circumferential direction of the enclosure structure, adjacent side plates and end plates are connected in sequence, and the connecting members are arranged on the oppositely arranged side plates.

7. The housing according to any one of claims 1 to 5, characterized in that: The heat exchange part includes a flow channel plate and a temperature averaging plate. The temperature averaging plate is arranged between the flow channel plate and the enclosure structure. The connecting part is arranged on the flow channel plate.

8. The housing according to claim 7, characterized in that The flow channel plate is provided with a flow channel inlet and a flow channel outlet, the flow channel inlet and the flow channel outlet are arranged on a first side of the flow channel plate, and the connecting portion is arranged on a second side of the flow channel plate.

9. The housing according to any one of claims 1 to 5, characterized in that: The housing further comprises a detachable connection structure, which is disposed between the connection portion and the connection piece to connect the connection portion and the connection piece.

10. The housing according to claim 9, characterized in that The detachable connection structure includes a first connection hole, a second connection hole and a fastener, wherein one of the first connection hole and the second connection hole is arranged on the connection part, and the other of the first connection hole and the second connection hole is arranged on the connection member, and the fastener passes through the first connection hole and the second connection hole in sequence to connect the connection part and the connection member.

11. A battery module, characterized in that: include: Battery cells; The housing according to any one of claims 1 to 10, wherein the battery cell is installed in the housing.

12. A battery pack, characterized in that: include: Box; The battery module of claim 11, wherein the number of the battery modules is at least two, and at least two of the battery modules are installed in the box.

13. An electrical equipment, characterized in that: include: Electrical appliances; The battery pack according to claim 12, wherein the battery pack is electrically connected to the electrical appliance.

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