Battery pack and electric equipment

Abstract

The embodiment of the utility model provides a battery pack and electric equipment. The battery pack comprises a battery tray; a first battery module and a second battery module, wherein the first battery module and the second battery module are stacked in the battery tray along a first direction; the first adapter comprises a first adapter part and a second adapter part, the first adapter part is detachably connected to the first battery module, and the second adapter part is detachably connected to the battery tray. According to the battery pack, the situation that welding of other structures in the battery pack is affected due to interference between the first adapter and welding equipment can be avoided, and the mounting efficiency of the first battery module is improved.

Description

Technical Field

[0001] This application belongs to the technical field of batteries, and particularly relates to a battery pack and an electrical device. Background Art

[0002] With the rapid development of new energy battery technology, various types of battery packs are increasingly widely used, and various electrical devices have higher and higher requirements for the battery life of the battery pack. In order to improve the battery life of the battery pack, sometimes a double-layer battery module is set in the battery pack to increase the battery capacity of the battery pack.

[0003] In related technologies, in order to enhance the stability of the internal structure of the battery pack, a transfer block is welded to the upper battery module to connect the lower battery module and the battery tray at the same time. However, the transfer block protrudes from the upper battery module and will interfere with the welding equipment, affecting the welding between other structures of the battery pack and the upper module. Utility Model Content

[0004] This application aims to provide a battery pack and an electrical device to solve the problem that the existing battery module interferes with the welding equipment.

[0005] To solve the above technical problems, this application is implemented as follows:

[0006] In a first aspect, this application discloses a battery pack, including:

[0007] A battery tray;

[0008] A first battery module and a second battery module, the first battery module and the second battery module are stacked along a first direction on the battery tray;

[0009] A first transfer member, including a first transfer portion and a second transfer portion, the first transfer portion is detachably connected to the first battery module, and the second transfer portion is detachably connected to the battery tray.

[0010] Optionally, the first battery module includes a housing and battery cells disposed in the housing, wherein the first transfer portion is connected to the housing.

[0011] Optionally, the battery tray includes a tray body and a mounting block, the mounting block is connected to one side of the tray body close to the first battery module, and the second transfer portion is connected to the mounting block.

[0012] Optionally, the tray body includes side beams and a blocking beam, the blocking beam is located on one side of the side beams close to the first battery module, and the mounting block is disposed on the blocking beam.

[0013] Optionally, the first adapter portion and the second adapter portion are arranged along a second direction, wherein the second adapter portion protrudes from the first battery module along the second direction, and the second direction intersects with the first direction.

[0014] Optionally, the first adapter portion is provided with a first through hole, and the second adapter portion is provided with a second through hole. The battery pack further includes a first fastener and a second fastener. The first fastener passes through the first through hole and is fixed to the first battery module, and the second fastener passes through the second through hole and is fixed to the battery tray.

[0015] Optionally, the number of the first through holes is at least two.

[0016] Optionally, at least two of the first through holes are arranged at intervals along the second direction.

[0017] Optionally, the aperture of the second through hole is larger than the aperture of the first through hole.

[0018] Optionally, the number of the first adapter members is multiple, and the multiple first adapter members are arranged at intervals along the circumferential direction of the first battery module.

[0019] Optionally, among the multiple first adapter members, at least one first adapter member is further provided with a support portion. The support portion protrudes from the first adapter portion and the second adapter portion along the first direction away from the battery tray, and the support portion is used for supporting the bus bar.

[0020] Optionally, the number of the first battery modules is multiple, and the multiple first battery modules are arranged at intervals along the second direction. The battery pack further includes a second adapter member, which is detachably connected between two adjacent first battery modules arranged at intervals along the second direction. The second adapter member is also detachably connected to the battery tray, and the second direction intersects with the first direction.

[0021] Optionally, the second adapter member includes a partition portion and two connecting portions. The two connecting portions are connected to both sides of the partition portion along a third direction. The partition portion is used for separating two adjacent first battery modules, and the connecting portions are detachably connected to two adjacent first battery modules and the battery tray. The third direction intersects with the first direction and the second direction pairwise.

[0022] Optionally, the connecting portion includes two first connecting portions and a second connecting portion. The two first connecting portions are connected to both sides of the second connecting portion along the second direction. The two first connecting portions are respectively detachably connected to two adjacent first battery modules, and the second connecting portion is detachably connected to the battery tray.

[0023] Optionally, a third through hole is provided in the first connecting portion, and a fourth through hole is provided in the second connecting portion. The battery pack further includes a third fastener and a fourth fastener. The third fastener passes through the third through hole and is fixed to the first battery module, and the fourth fastener passes through the fourth through hole and is fixed to the battery tray.

[0024] In a second aspect, the present application also discloses an electrical device including the battery pack as described above.

[0025] In the embodiment of the present application, by providing the first battery module stacked with the second battery module in the first direction, the overall capacity of the battery pack can be improved. Since the first adapter is detachably connected to the first battery module, before welding other structures in the battery pack to the first battery module, the first adapter can be kept separated from the first battery module first. After the welding work is completed, the first connecting portion of the first adapter is then connected to the first battery module, and the second connecting portion of the first adapter is used to connect to the battery tray. This can avoid interference between the first adapter and the welding equipment and affect the welding of other structures in the battery pack, thereby improving the installation efficiency of the first battery module.

[0026] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0028] Figure 1 is a schematic structural diagram of a battery pack in an embodiment of the present application;

[0029] Figure 2 is Figure 1 an enlarged schematic view of part A in

[0030] Figure 3 is a partial exploded view of a battery pack in an embodiment of the present application;

[0031] Figure 4 is a schematic structural diagram of a first adapter in an embodiment of the present application;

[0032] Figure 5 is a schematic structural diagram of another first adapter in an embodiment of the present application;

[0033] Figure 6 is a schematic structural diagram of a second adapter in an embodiment of the present application;

[0034] Figure 7It is a schematic diagram of the random vibration simulation result of the battery pack in the embodiment of the present application.

[0035] Reference numerals: 10 - first battery module, 20 - first adapter, 21 - first adapter part, 211 - first through hole, 212 - first fastener, 22 - second adapter part, 221 - second through hole, 222 - second fastener, 23 - support part, 231 - support surface, 30 - second adapter, 31 - partition part, 32 - connection part, 321 - first connection part, 3211 - third through hole, 3212 - third fastener, 322 - second connection part, 3221 - fourth through hole, 3222 - fourth fastener, 40 - battery tray, 41 - tray body, 411 - side beam, 412 - blocking beam, 42 - mounting block, x - first direction, y - second direction, z - third direction. Detailed implementation manners

[0036] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present application and should not be construed as limiting the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts fall within the scope of protection of the present application.

[0037] The features of the terms "first" and "second" in the description and claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally means an "or" relationship between the associated objects before and after.

[0038] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present application.

[0039] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "coupled" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0040] The embodiment of the present application provides a battery pack. Since the battery pack is provided with a first battery module and a second battery module, the battery capacity of the battery pack is increased, and the endurance of the battery pack is improved. The battery pack in the embodiment of the present application is provided with a first adapter, and the first adapter is detachably connected to the first battery module, which can avoid the interference between the first adapter and the welding equipment and affect the welding efficiency.

[0041] The battery pack provided by the present application will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0042] It should be noted that in the embodiment of the present application, the first direction x is the height direction of the first battery module, the second direction y is the length direction of the first battery module, and the third direction z is the width direction of the first battery module. Among them, the height direction of the battery pack is consistent with the height direction of the battery module, and the length direction and width direction of the battery pack can be different from the length direction and width direction of the battery module.

[0043] Refer to Figure 1 , which shows the schematic structural diagram of the battery pack in the embodiment of the present application. Refer to Figure 2 , which shows Figure 1 The enlarged schematic diagram of part A in Figure 3 , which shows the partial exploded view of the battery pack in the embodiment of the present application. Refer to Figure 4 , which shows the schematic structural diagram of a first adapter in the embodiment of the present application. Refer to Figure 5 , which shows the schematic structural diagram of another first adapter in the embodiment of the present application. Refer to Figure 6 , which shows the schematic structural diagram of the second adapter in the embodiment of the present application.

[0044] As Figure 1 shown, the battery pack provided by the embodiment of the present application may include: a battery tray 40, a first battery module 10 and a second battery module. The first battery module 10 and the second battery module are stacked along the first direction x in the battery tray 40.

[0045] Specifically, the battery tray 40 has a receiving cavity with an opening. The battery module includes a double-layer module. The first battery module 10 is the upper module, and the second battery module (not shown in the figure) is the lower module. The first battery module 10 and the second battery module are assembled into the receiving cavity through the opening of the receiving cavity. Along the first direction x, the top height of the first battery module 10 can be higher than the top height of the battery tray 40, that is, the first battery module 10 can be exposed outside the opening of the receiving cavity along the first direction x.

[0046] Among them, the number of the first battery modules 10 and the second battery modules can both be multiple. The number of the first battery modules 10 is less than or equal to the number of the second battery modules. When the first battery modules 10 and the second battery modules are stacked along the first direction x, one first battery module 10 is disposed opposite to one second battery module along the first direction x. It should be noted that in practical applications, the second battery modules can cover the battery tray 40. When the battery capacity requirement of the battery pack is increased, the first battery modules 10 can be added on the upper layer of the second battery modules. Among them, the number of the first battery modules 10 can be selected according to the battery capacity requirement of the battery pack. By way of example, in the embodiments of the present application, the number of the first battery modules 10 is two, and the position where no battery cell module 11 is disposed above the second battery modules can provide layout space for other structures of the electrical device. Of course, those skilled in the art can also select the arrangement position of the first battery modules 10 according to the structural characteristics of the electrical device, not limited to Figure 1 the position of the first battery module 10 in

[0047] The first adapter 20 is detachably connected to the first battery module 10 and the battery tray 40. Specifically, the first adapter 20 includes a first adapter portion 21 and a second adapter portion 22. The first adapter portion 21 is detachably connected to the first battery module 10, and the second adapter portion 22 is detachably connected to the battery tray 40.

[0048] Specifically, the first battery module 10 is generally in a cuboid structure and includes four edges perpendicular to the battery tray 40. The first adapter 20 is disposed close to the edges of the first battery module 10. The first adapter 20 can be detachably connected to the first battery module 10 by bolts. In the embodiments of the present application, after the first adapter portion 21 of the first adapter 20 is connected to the first battery module 10, the second adapter portion 22 can protrude from the first battery module 10 and is used for connecting to the battery tray 40.

[0049] It should be noted that in the prior art, the first adapter 20 is welded to the first battery module 10. Therefore, when the second adapter portion 22 protrudes from the first battery module 10, it will affect the welding of other structures in the battery pack. For example, the nickel sheet connecting piece in the battery pack needs to be welded to the side of the first battery module 10 close to the side wall of the battery tray 40, and the second adapter portion 22 of the first adapter 20 will interfere with the welding. Therefore, the first adapter 20 and the first battery module 10 are designed to be detachably connected. Before welding, the first adapter 20 does not need to be connected to the first battery module 10. After the welding work of the nickel sheet connecting piece is completed, the first adapter 20 is connected to the first battery module 10 through the first adapter portion 21, and the first battery module 10 is connected to the battery tray 40 through the second adapter portion 22. In this way, the first adapter 20 will not affect the welding of the nickel sheet connecting piece by the welding equipment, and the welding equipment can be used for welding normally. On the contrary, when the first adapter 20 and the first battery module 10 are non-detachably connected, since the first adapter 20 interferes with the welding equipment, the welding work can only be completed by manual welding, resulting in a decrease in welding efficiency and affecting the installation efficiency of the first battery module 10.

[0050] Optionally, the first battery module 10 includes a housing and battery cells disposed in the housing, wherein the first adapter portion 21 is connected to the housing.

[0051] Specifically, the housing is provided with an installation portion at a position adapted to the first adapter portion. The first adapter portion 21 faces the installation portion in the first direction x and is detachably connected to the installation portion.

[0052] Optionally, the battery tray 40 includes a tray body 41 and a mounting block 42. The mounting block 42 is connected to the side of the tray body 41 close to the first battery module 10, and the second adapter portion 22 is connected to the mounting block 42.

[0053] It should be noted that since the second adapter portion 22 is detachably connected to the battery tray 40, in practical applications, mounting holes need to be provided on the battery tray 40. In the case where the mounting block 42 is provided, the mounting holes can be opened on the mounting block 42, so as to avoid setting the mounting holes on the tray body 41, which is beneficial to ensuring the integrity and structural strength of the tray body 41.

[0054] In an alternative embodiment of the present application, the tray body 41 includes a side beam 411 and a blocking beam 412. The blocking beam 412 is located on the side of the side beam 411 close to the first battery module 10, and the mounting block 42 is disposed on the blocking beam 412.

[0055] Specifically, the number of side beams 411 is four. The tray body 41 further includes a bottom plate. The four side beams 411 and the bottom plate are connected and enclose to form an accommodation cavity of the battery tray 40. The blocking beam 412 is disposed in the accommodation cavity and connected to the bottom plate. In practical applications, the setting of the blocking beam 412 provides an installation position for the mounting block 42 and improves the structural stability of the mounting block 42. In addition, the blocking beam 412 can be disposed opposite to the explosion-proof valve of the second battery module. The setting of the blocking beam 412 can prevent the exhaust gas of the explosion-proof valve of the second battery module from directly spraying on the side beam 411 or the pressure relief valve on the side beam 411.

[0056] Optionally, the number of the first adapters 20 is multiple, and the multiple first adapters 20 are arranged at intervals along the circumferential direction of the first battery module 10.

[0057] Specifically, as Figure 1 、 Figure 3 shown, the number of the first adapters 20 is 4, and the 4 first adapters 20 are arranged at intervals along the circumferential direction of the first battery module 10 and are respectively disposed at the positions of the first battery module 10 close to the edges of the battery tray 40. It can be understood that in the case of setting multiple first adapters 20, each first adapter 20 is connected to the first battery module 10 and at the same time is also connected to the battery tray 40. There are more connection points between the first battery module 10 and the battery tray 40, which improves the connection strength between the first battery module 10 and the battery tray 40. In addition, the multiple first adapters 20 are arranged at intervals, which is also beneficial to improving the uniformity of the connection strength between the first battery module 10 and the battery tray 40 and ensuring the connection effect and stability of the first battery module 10.

[0058] Specifically, regarding the structure of the first adapter 20, Figure 4 shows a schematic structural diagram of a first adapter 20 in an embodiment of the present application, Figure 5 shows a schematic structural diagram of another first adapter 20 in an embodiment of the present application. As Figure 4As shown, this is a basic structure of the first adapter 20 in an embodiment of the present application. Specifically, it may include a first adapter portion 21 and a second adapter portion 22 spaced apart along the second direction y. Among them, the first adapter portion 21 can be detachably connected to the first battery module 10, and the second adapter portion 22 is detachably connected to the battery tray 40. In the embodiment of the present application, since the installation heights of the first battery module 10 and the first adapter 20, and the installation height of the battery tray 40 and the first adapter 20 are different, in the first direction x, the top heights of the first adapter portion 21 and the second adapter portion 22 are different. In actual applications, the tops of the first adapter portion 21 and the second adapter portion 22 can be set at the same height or at different heights. The first adapter portion 21 can be higher than the second adapter portion 22 or lower than the second adapter portion 22, as long as the connection with the first battery module 10 and the battery tray 40 is satisfied. The present application does not make specific limitations on this.

[0059] It should be noted that the first adapter 20 can be all set to the structure as Figure 4 shown, or a support portion 23 can be added to the first adapter 20 to form the first adapter 20 as Figure 5 shown. Both types of first adapters 20 can be detachably connected to the first battery module 10 and realize the connection between the first battery module 10 and the battery tray 40.

[0060] Optionally, the first adapter portion 21 is provided with a first through hole 211, the second adapter portion 22 is provided with a second through hole 221, the battery pack further includes a first fastener 212 and a second fastener 222. The first fastener 212 passes through the first through hole 211 and is fixed to the first battery module 10, and the second fastener 222 passes through the second through hole 221 and is fixed to the battery tray 40.

[0061] Specifically, the first adapter 20 is a metal part. The first through hole 211 is formed by machining on the first adapter portion 21, and the second through hole 221 is formed by machining on the second adapter portion 22. Correspondingly, a first installation hole is opened at the position of the first battery module 10 corresponding to the first through hole 211, and a second installation hole is opened at the position of the battery tray 40 corresponding to the second through hole 221. The diameter of the first installation hole is the same as that of the first through hole 211, and the diameter of the second installation hole is the same as that of the second through hole 221.

[0062] Of course, the detachable connection method between the first adapter 20 and the first battery module 10 and the battery tray 40 is not limited to the above method. For example, a plug-in connection can also be selected. A plug hole is provided on the first adapter 20, and the detachable connection between the first adapter 20 and the first battery module 10 and the battery tray 40 is realized through the interference fit between the plug and the plug hole. The present application does not make specific limitations on this.

[0063] In an alternative embodiment of the present application, the number of the first through holes 211 is at least two.

[0064] It should be noted that in practical applications, the first adapter part 21 needs to be connected to the first battery module 10 by the first fastener 212 first, and then the second adapter part 22 needs to be connected to the battery tray 40 by the second fastener 222. Since the first adapter 20 connects the first battery module 10 and the battery tray 40 at the same time, the connection reliability between the first battery module 10 and the battery tray 40 is enhanced. When only one through hole is provided in the first adapter part 21, after the first adapter 20 is connected to the first battery module 10, the first adapter 20 may rotate relative to the first battery module 10, resulting in the second through hole 221 on the second adapter part 22 not being aligned with the mounting hole position of the battery tray 40. However, when two first through holes 211 are provided in the first adapter part 21 of the first adapter 20, the rotation of the first adapter 20 relative to the first battery module 10 can be prevented, ensuring the alignment of the mounting hole positions between the first adapter 20 and the battery tray 40 and improving the installation efficiency. In addition, it can be understood that providing two first through holes 211 can also enhance the connection strength between the first adapter 20 and the first battery module 10. Further, since the first adapter 20 is also detachably connected to the battery tray 40, the installation stability between the first battery module 10 and the battery tray 40 can be improved, thereby enhancing the structural stability of the entire battery pack.

[0065] Optionally, at least two first through holes 211 are arranged at intervals along the second direction y.

[0066] It should be noted that since the first through hole 211 and the second through hole 221 are arranged at intervals along the second direction y, setting at least two first through holes 211 at intervals along the second direction y can keep the second through hole 221 and at least two first through holes 211 substantially on the same axis, thereby reducing the size of the first adapter 20 along the third direction z. Since in practical applications, structures such as nickel sheet connecting pieces need to be welded between the first adapters 20 arranged on the same side of the first battery module 10, the compression of the size between the two first adapters 20 is not conducive to the arrangement of structures such as nickel sheet connecting pieces.

[0067] In addition, when at least two first through holes 211 are arranged along the second direction y, one of the first through holes 211 is located at the outermost edge of the first battery module 10, and the remaining first through holes 211 are arranged at intervals at positions away from the edge of the first battery module 10, which can also ensure the connection reliability between the first adapter 20 and the first battery module 10. When at least two first through holes 211 are arranged along the third direction z, all of the at least two first through holes 211 are arranged at the edge positions of the first battery module 10, making it difficult to ensure the connection effect between the first adapter 20 and the first battery module 10.

[0068] Optionally, the aperture of the second through hole 221 is larger than that of the first through hole 211.

[0069] It can be understood that by setting the aperture of the second through hole 221 to be larger, the specification model of the second fastener is also larger, which is more conducive to improving the connection strength between the battery tray 40, the first adapter 20, and the first battery module 10, thereby ensuring the installation stability between the first battery module 10 and the battery tray 40, and preventing the first battery module 10 from shaking under the vibration condition of the battery pack and affecting the safety of the internal structure of the battery pack.

[0070] Exemplarily, in the embodiment of the present application, the first fastener 212 is selected as an M6 bolt, and the second fastener 222 is selected as an M8 bolt. Correspondingly, the first through hole 211 is set as an M6 bolt hole adapted to the M6 bolt, and the second through hole 221 is set as an M8 bolt hole adapted to the M8 bolt.

[0071] In an alternative embodiment of the present application, among the plurality of first adapters 20, at least one first adapter 20 is further provided with a support portion 23. The support portion 23 is connected to the first adapter 20 and protrudes from the first adapter portion 21 and the second adapter portion 22 in a direction away from the battery tray 40 along the first direction x. The support portion 23 is used to support the bus bar.

[0072] Specifically, as Figure 4 shown, the first adapter 20 does not have a support portion 23, and as Figure 5 shown, the first adapter 20 is provided with a support portion 23.

[0073] In practical applications, since the first adapter portion 21 is used to connect the first battery module 10, the first adapter portion 21 and the first battery module 10 at least partially overlap in the first direction x. Therefore, the support portion 23 can be connected to the second adapter portion 22. When two first adapters 20 are provided on one side of the first battery module 10 along the second direction y, the support portion 23 is further provided on the side of the second adapter portion 22 close to the other first adapter 20. The surface of the support portion 23 facing away from the battery tray 40 is the support surface 231. By setting the support surface 231 as a flat surface, the contact area with the bus bar can be increased.

[0074] In an alternative embodiment of the present application, the number of the first battery modules 10 is multiple, and the multiple first battery modules 10 are arranged at intervals along the second direction y. The battery pack further includes a second adapter 30. The second adapter 30 is detachably connected between two adjacent first battery modules 10, and the second adapter 30 is also detachably connected to the battery tray 40.

[0075] Specifically, the second adapter 30 is connected between adjacent first battery modules 10 spaced apart in the second direction y. The battery tray 40 has a receiving cavity, and the opening of the receiving cavity faces upward in the first direction x. An installation block is provided on one side of the battery tray 40 close to the receiving cavity. The second battery module of the battery module can be disposed in the receiving cavity, and the first battery module 10 can be at least partially located in the receiving cavity or located outside the receiving cavity and connected to the installation block of the battery tray 40 through the first adapter 20. In addition, a heat-conducting adhesive can be coated between the second adapter 30 and the battery tray 40. After the heat-conducting adhesive is cured, the connection strength between the second adapter 30 and the battery tray 40 can be enhanced, thereby enhancing the installation stability of the first battery module 10.

[0076] Since the adjacent first battery modules 10 are connected together through the second adapter 30, the integrity between the adjacent first battery modules 10 can be improved. The adjacent first battery modules 10 are detachably connected, which also facilitates the assembly between the first battery modules 10. Further, the first battery module 10 is also connected to the battery tray 40 through the second adapter 30, making the connection between the first battery module 10 and the battery tray 40 more stable, enhancing the stability of the internal structure of the battery pack, and also being beneficial to improving the safety of the battery pack.

[0077] Refer to Figure 7 , which shows a schematic diagram of the random vibration simulation result of the battery pack in the embodiment of the present application. As Figure 7 shown, for the method of connecting the first battery module 10 and the battery tray 40 using the first adapter 20 and the second adapter 30, although the first adapter 20, the second adapter 30, the first battery module 10, and the battery tray 40 are all detachably connected, this method shows that its theoretical strength meets the requirements in the vibration simulation result.

[0078] Optionally, the second adapter 30 includes a partition portion 31 and two connection portions 32. The two connection portions 32 are fixed in relative positions through the partition portion 31, simplifying the positioning process of the assembly with the first battery module 10. Specifically, the partition portion 31 is an extruded aluminum profile, and the two connection portions 32 are Y-shaped metal blocks connected to both sides of the partition portion 31 along the third direction z. Among them, the partition portion 31 is used to separate adjacent first battery modules 10, which can prevent high-temperature gas from spraying when the explosion-proof valve of the first battery module 10 opens. The connection portion 32 is also detachably connected to two adjacent first battery modules 10 and the battery tray 40.

[0079] In an alternative embodiment of the present application, the connecting portion 32 includes two first connecting portions 321 and one second connecting portion 322. The two first connecting portions 321 are connected to both sides of the second connecting portion 322 along the second direction y. The two first connecting portions 321 are respectively detachably connected to two adjacent first battery modules 10, and the second connecting portion 322 is detachably connected to the battery tray 40.

[0080] Specifically, the two first connecting portions 321 are connected to both sides of the second connecting portion 322. The height of the first connecting portion 321 is higher than that of the second connecting portion 322, forming a structure similar to the letter "Y". The first connecting portion 321 can be connected to the first battery module 10, and the second connecting portion 322 can be connected to the battery tray 40.

[0081] Two adjacent first battery modules 10 are connected into one body through the connecting portion 32 of the second adapter 30, so that they can have better integrity. After two adjacent first battery modules 10 are connected into one body, the second connecting portion 322 is also connected to the battery tray 40, improving the connection stability between the multiple first battery modules 10 and the battery tray 40.

[0082] In an alternative embodiment of the present application, the first connecting portion 321 is provided with a third through hole 3211, and the second connecting portion 322 is provided with a fourth through hole 3221. The battery pack further includes a third fastener 3212 and a fourth fastener 3222. The third fastener 3212 passes through the third through hole 3211 and is fixed to the first battery module 10, and the fourth fastener 3222 passes through the fourth through hole 3221 and is fixed to the battery tray 40.

[0083] Specifically, the third through hole 3211 is machined on the first connecting portion 321, and the fourth through hole 3221 is machined on the second connecting portion 322. Correspondingly, a matching third mounting hole is provided at a position of the first battery module 10 corresponding to the third through hole 3211, and a matching fourth mounting hole is provided at a position of the battery tray 40 corresponding to the fourth through hole 3221.

[0084] In summary, the battery pack provided by the embodiment of the present application has at least the following advantages:

[0085] In the embodiment of the present application, by arranging the first battery module stacked with the second battery module in the first direction, the overall capacity of the battery pack can be improved. Since the first adapter is detachably connected to the first battery module, before welding other structures in the battery pack to the first battery module, the first adapter can be kept separated from the first battery module. After the welding work is completed, the first connection part of the first adapter is connected to the first battery module, and the battery tray is connected through the second connection part of the first adapter. This can avoid interference between the first adapter and the welding equipment, which affects the welding of other structures in the battery pack, thereby improving the installation efficiency of the first battery module.

[0086] The present application also discloses an electrical device, including the battery pack as described above. Among them, the electrical device can be a vehicle, an energy storage system, a medical device, etc., and the present application does not make specific limitations on this.

[0087] It should be noted that the electrical device provided in the embodiment of the present application has the same or similar advantages as the battery pack described above, and will not be elaborated here.

[0088] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0089] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. A battery pack, characterized in that: include: Battery tray; A first battery module and a second battery module, wherein the first battery module and the second battery module are stacked on the battery tray along a first direction; The first adapter includes a first adapter portion and a second adapter portion, wherein the first adapter portion is detachably connected to the first battery module, and the second adapter portion is detachably connected to the battery tray.

2. The battery pack according to claim 1, characterized in that: The first battery module includes a shell and a battery cell disposed in the shell, wherein the first adapter is connected to the shell.

3. The battery pack according to claim 1, characterized in that: The battery tray includes a tray body and a mounting block. The mounting block is connected to a side of the tray body close to the first battery module, and the second adapter is connected to the mounting block.

4. The battery pack according to claim 3, characterized in that: The tray body includes a side beam and a blocking beam. The blocking beam is located on a side of the side beam close to the first battery module, and the mounting block is arranged on the blocking beam.

5. The battery pack according to claim 1, characterized in that: The first transfer portion and the second transfer portion are arranged along a second direction, wherein the second transfer portion protrudes from the first battery module along the second direction, and the second direction intersects with the first direction.

6. The battery pack according to claim 5, characterized in that: The first adapter portion is provided with a first through hole, the second adapter portion is provided with a second through hole, and the battery pack further includes a first fastener and a second fastener, the first fastener passes through the first through hole and is fixed to the first battery module, and the second fastener passes through the second through hole and is fixed to the battery tray.

7. The battery pack according to claim 6, characterized in that: The number of the first through holes is at least two.

8. The battery pack according to claim 7, characterized in that: At least two of the first through holes are spaced apart along the second direction.

9. The battery pack according to claim 6, characterized in that: The second through hole has a large aperture The diameter of the first through hole.

10. The battery pack according to claim 1, characterized in that: There are multiple first adapters, and the multiple first adapters are arranged at intervals along the circumference of the first battery module.

11. The battery pack according to claim 10, characterized in that: Among the plurality of first adapters, at least one of the first adapters is further provided with a support portion, the support portion protruding from the first adapter portion and the second adapter portion along the first direction away from the battery tray, the support portion being used to support the bus.

12. The battery pack according to any one of claims 1 to 11, characterized in that: There are multiple first battery modules, and the multiple first battery modules are arranged at intervals along the second direction. The battery pack also includes a second adapter, which is detachably connected between two adjacent first battery modules. The second adapter is also detachably connected to the battery tray, and the second direction intersects with the first direction.

13. The battery pack according to claim 12, characterized in that: The second adapter includes a partition and two connecting parts, the two connecting parts are connected to both sides of the partition along the third direction, the partition is used to separate two adjacent first battery modules, the connecting parts are detachably connected to two adjacent first battery modules and the battery tray, and the third direction intersects with the first direction and the second direction in pairs.

14. The battery pack according to claim 13, characterized in that: The connecting part includes two first connecting parts and one second connecting part, the two first connecting parts are connected to both sides of the second connecting part along the second direction, the two first connecting parts are respectively detachably connected to two adjacent first battery modules, and the second connecting part is detachably connected to the battery tray.

15. The battery pack according to claim 14, characterized in that: The first connecting portion is provided with a third through hole, the second connecting portion is provided with a fourth through hole, and the battery pack further includes a third fastener and a fourth fastener, the third fastener passes through the third through hole and is fixed to the first battery module, and the fourth fastener passes through the fourth through hole and is fixed to the battery tray.

16. An electrical equipment, characterized in that: Comprising a battery pack as claimed in any one of claims 1 to 15.

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