Battery packs and electrical equipment

Abstract

The present application discloses a battery pack and an electric device, belonging to the field of batteries. The battery pack includes: a shell; a plurality of battery holders, the plurality of battery holders are arranged on the shell, the plurality of battery holders are stacked along the axial direction of the shell, the battery holders have a receiving subcavity, and the receiving subcavity contains a battery cell; an assembly structure, the assembly structure includes a first limiting column and a first limiting hole, the first limiting column is arranged on one of two adjacent battery holders, the first limiting hole is arranged on the other of the two adjacent battery holders, the first limiting column and the first limiting hole are arranged oppositely and the first limiting column is embedded in the first limiting hole, so that the two adjacent battery holders are connected.

Description

Technical Field

[0001] The present application belongs to the field of batteries, and specifically relates to a battery pack and electrical equipment. Background Art

[0002] With the development of science and technology, electric vehicles are increasingly widely used. Usually, electric vehicles are equipped with battery packs, which provide power for the electric vehicles so that the electric vehicles can travel normally. In the related art, the battery pack includes a shell, in which a plurality of battery holders are arranged, and the battery holders have a receiving cavity, in which the battery cells are received. However, during the use of the battery pack, the battery pack may be vibrated, so that the plurality of battery holders shake against each other, affecting the structural stability of the battery pack. Utility Model Content

[0003] The purpose of the embodiments of the present application is to provide a battery pack and an electrical device, which at least solves the problem of shaking between multiple battery brackets, affecting the structural stability of the battery pack.

[0004] In a first aspect, an embodiment of the present application provides a battery pack, the battery pack comprising:

[0005] case;

[0006] A plurality of battery holders, wherein the plurality of battery holders are arranged on the shell, and the plurality of battery holders are stacked along the axial direction of the shell, and the battery holders have a receiving subcavity, and the receiving subcavity receives a battery cell;

[0007] An assembly structure, wherein the assembly structure includes a first limiting column and a first limiting hole, wherein the first limiting column is arranged on one of the two adjacent battery brackets, and the first limiting hole is arranged on the other of the two adjacent battery brackets, the first limiting column and the first limiting hole are arranged opposite to each other and the first limiting column is embedded in the first limiting hole, so as to connect the two adjacent battery brackets.

[0008] Optionally, the battery holder is provided with a connection hole and a limiting groove along the axial direction of the shell, and the connection hole and the limiting groove penetrate the battery holder, and the limiting groove is communicated with the connection hole;

[0009] The battery pack also includes a connecting rod, and a limiting rib is arranged on the outer wall of the connecting rod, and the limiting rib extends along the axial direction of the connecting rod. The connecting rod is sequentially penetrated through the connecting holes on each of the battery holders along the axial direction of the shell, and the limiting rib is penetrated through the limiting groove on each of the battery holders, and the limiting groove is used to limit the limiting rib to prevent the connecting rod from rotating relative to the battery holder, and a plurality of the battery holders are connected via the connecting rod.

[0010] Optionally, the battery pack further comprises a plurality of bus bars, one of the bus bars is connected to one of the battery holders, and the battery cells in the battery holder are electrically connected to the bus bars;

[0011] Wherein, a second limiting column is arranged on the battery bracket, a second limiting hole is arranged on the bus bar, and the second limiting column is embedded in the second limiting hole.

[0012] Optionally, the battery pack also includes a circuit board module and an insulating sheet, the circuit board module is located in the accommodating cavity of the shell, the bus is electrically connected to the circuit board module, and the insulating sheet is located between the connection point where the circuit board module and the bus are electrically connected and the cavity wall of the accommodating cavity of the shell.

[0013] Optionally, the battery pack further includes a top cover and a bottom cover;

[0014] The shell has a first opening and a second opening opposite to each other along the axial direction of the shell, the shell has a receiving cavity, the first opening and the second opening are both communicated with the receiving cavity, the top cover is connected to the first opening and covers the first opening, and the bottom cover is connected to the second opening and covers the second opening;

[0015] A connecting groove is provided on the outer wall of the shell along the axial direction of the shell, and the connecting groove extends along the axial direction of the shell;

[0016] The top cover and the bottom cover are both provided with limit buckles, the limit buckles are embedded in the connecting grooves, and the connecting grooves are used to limit the limit buckles to prevent the top cover and the bottom cover from rotating relative to the shell.

[0017] Optionally, fixing holes are provided on the top cover and the bottom cover, fixing members are passed through the fixing holes, and the fixing members are embedded in the connecting grooves, and the fixing members are used to fix the top cover to the shell, and to fix the bottom cover to the shell.

[0018] Optionally, the battery pack further includes a limiting rubber shell, and a limiting platform is provided on the side of the top cover facing the shell and the side of the bottom cover facing the shell, and the limiting platform extends along the circumferential direction of the shell, and the top cover is fixed to the inner wall of the shell at the first opening through the limiting rubber shell, and the bottom cover is fixed to the inner wall of the shell at the second opening through the limiting rubber shell, and the limiting rubber shell is used to fix the limiting platform to prevent the top cover and the bottom cover from shaking relative to the shell.

[0019] Optionally, a snap-on assembly is provided on the side of the top cover facing away from the shell, and the snap-on assembly includes a snap-on switch, a movable snap-on and an elastic member, one end of the elastic member is fixedly connected to the top cover, the snap-on switch is fixedly connected to the other end of the elastic member, the movable snap-on is connected to the snap-on switch, and the movable snap-on drives the snap-on switch to move along the extension and contraction direction of the elastic member so that the snap-on switch extends outward from the top cover or retracts inward from the top cover, and the snap-on switch is used to connect the top cover to the device to be powered.

[0020] Optionally, a handle is provided on a side of the top cover facing away from the shell, and the handle is movably connected to the top cover.

[0021] In a second aspect, an embodiment of the present application provides an electrical device, wherein the electrical device comprises the battery pack described in any one of the first aspects above.

[0022] In the embodiment of the present application, since a plurality of battery holders are stacked in sequence along the axial direction of the shell, the battery holders have a receiving subcavity, and the receiving subcavity contains battery cells. Therefore, the battery cells and the battery holders can form a battery module, which is equivalent to a battery pack having a plurality of battery modules. A first limiting column is provided on one of the two adjacent battery holders, and a first limiting hole is provided on the other. The first limiting column and the first limiting hole are arranged oppositely and the first limiting column is embedded in the first limiting hole, so that the two adjacent battery holders are connected, and the battery holders can be made more stable. That is, in the embodiment of the present application, by connecting any two adjacent battery holders among the plurality of battery holders in the shell through the first limiting column and the first limiting hole, the plurality of battery holders are made more stable, so that even if the battery pack is shaken, the plurality of battery holders can still remain stable due to the mutual connection, so that the structural stability of the battery pack is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 An exploded view of a battery pack provided in an embodiment of the present application is shown;

[0024] Figure 2 A schematic diagram showing a snap-on assembly provided in an embodiment of the present application;

[0025] Figure 3 A cross-sectional view of a battery bracket provided in an embodiment of the present application is shown;

[0026] Figure 4 A cross-sectional view showing a connecting rod provided in an embodiment of the present application connecting multiple battery brackets;

[0027] Figure 5 A schematic diagram showing a battery bracket provided in an embodiment of the present application;

[0028] Figure 6 A partial schematic diagram showing a connecting rod provided in an embodiment of the present application;

[0029] Figure 7 A top view of a battery bracket provided in an embodiment of the present application is shown;

[0030] Figure 8 A schematic diagram showing a top cover provided in an embodiment of the present application;

[0031] Fig. 9 One of the cross-sectional views of a top cover provided in an embodiment of the present application is shown;

[0032] Fig.10 A second cross-sectional view showing a top cover provided in an embodiment of the present application;

[0033] Fig.11 A schematic diagram showing a circuit board module provided in an embodiment of the present application;

[0034] Fig.12 An exploded view of a top cover provided in an embodiment of the present application is shown;

[0035] Fig.13 A schematic diagram showing a battery pack provided in an embodiment of the present application;

[0036] Fig.14 express Fig.13 A partial enlarged view of the middle A;

[0037] Fig.15 A schematic diagram showing the connection of multiple battery holders in a battery pack provided in an embodiment of the present application.

[0038] Reference numerals:

[0039] 10: top cover; 101: limit buckle; 102: fixing hole; 103: limit platform; 20: bottom cover; 30: shell; 31: connecting groove; 301: first opening; 302: second opening; 40: battery holder; 400: accommodating sub-cavity; 41: first limit column; 42: first limit hole; 401: connecting hole; 402: limit groove; 403: second limit column; 50: connecting rod; 51: limit rib; 52: connecting through hole; 53: connecting screw; 60: bus; 61: second limit hole; 70: circuit board module; 71: circuit board; 72: support body; 73: connecting plate; 80: insulating sheet; 90: limit rubber shell; 100: snap assembly; 110: snap switch; 120: movable snap; 130: elastic member; 140: handle; 200: fixing member. DETAILED DESCRIPTION

[0040] The term "first" or "second" in the specification and claims of this application may include one or more of the features explicitly or implicitly. In the description of this application, unless otherwise specified, "plurality" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0041] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing 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 and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0042] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0043] like Figures 1 to 15 As shown, the battery pack includes: a shell 30, a plurality of battery holders 40, the plurality of battery holders 40 are arranged on the shell 30, the plurality of battery holders 40 are stacked in sequence along the axial direction of the shell 30, the battery holder 40 has a receiving subcavity 400, and the receiving subcavity 400 receives a battery cell. An assembly structure 410, the assembly structure 410 includes a first limiting column 41 and a first limiting hole 42, the first limiting column 41 is arranged on one of two adjacent battery holders 40, the first limiting hole 42 is arranged on the other of the two adjacent battery holders 40, the first limiting column 41 and the first limiting hole 42 are arranged oppositely and the first limiting column 41 is embedded in the first limiting hole 42, so that the two adjacent battery holders 40 are connected.

[0044] In the embodiment of the present application, since the plurality of battery holders 40 are stacked in sequence along the axial direction of the housing 30, the battery holder 40 has a receiving sub-cavity 400, and the receiving sub-cavity 400 contains a battery cell, therefore, the battery cell and the battery holder 40 can form a battery module, which is equivalent to a battery pack having a plurality of battery modules, and one of the two adjacent battery holders 40 is provided with a first limiting column 41, and the other is provided with a first limiting hole 42, the first limiting column 41 and the first limiting hole 42 are arranged oppositely and the first limiting column 41 is embedded in the first limiting hole 42, so that the two adjacent battery holders 40 are connected, and the battery holders 40 can be made more stable. That is, in the embodiment of the present application, by connecting any two adjacent battery holders 40 in the plurality of battery holders 40 in the housing 30 through the first limiting column 41 and the first limiting hole 42, the plurality of battery holders 40 are made more stable, so that even if the battery pack is shaken, the plurality of battery holders 40 can still remain stable due to the mutual connection, so that the structural stability of the battery pack is improved.

[0045] It should be noted that, in the embodiment of the present application, the material of the housing 30 may be aluminum. In this case, the housing 30 is an aluminum barrel. Of course, the material of the housing 30 may also be other metal materials, for example, the material of the housing 30 is copper. The specific material of the housing 30 is not limited in the embodiment of the present application.

[0046] In addition, in the embodiment of the present application, a receiving sub-cavity 400 is provided on the battery holder 40, and the receiving sub-cavity 400 receives the battery cell. In practical applications, the battery cell can be received by two battery holders 40 together, and in this case, the two battery holders 40 and the battery cell form a battery module. Of course, the battery cell can also be received by one battery holder 40, that is, one battery holder and the battery cell form a battery module. In this regard, the embodiment of the present application is not limited here.

[0047] In addition, in the embodiment of the present application, the battery holder 40 may be provided with a first limiting column 41 and a first limiting hole 42 at both opposite ends along the axial direction of the housing 30. At this time, along the axial direction of the housing 30, the first limiting column 41 on one of the two adjacent battery holders 40 is embedded in the first limiting hole 42 on the other battery holder 40, so that the two adjacent battery holders 40 are connected.

[0048] Through such an arrangement, during the process of assembling the battery pack, one battery holder 40 can be connected to another battery holder 40, that is, the first limiting column 41 and the first limiting hole 42 on the two adjacent battery holders 40 are embedded in each other. Specifically, the first limiting column 41 on the first battery holder 40 of the two adjacent battery holders 40 can be embedded in the first limiting hole 42 on the second battery holder 40, and at the same time, the first limiting column 41 on the second battery holder 40 is embedded in the first limiting hole 42 on the first battery holder 40, so as to realize the connection of the two adjacent battery holders 40. And by providing the first limiting column 41 and the first limiting hole 42 on the battery holder 40, after the first limiting column 41 is embedded in the first limiting hole 42, the two adjacent batteries are relatively fixed, and there will be no relative rotation problem, so that the structural stability between the battery holders 40 is improved.

[0049] It should be noted that the number of the first limiting posts 41 and the number of the first limiting holes 42 on the battery holder 40 can be set according to actual needs. For example, the number of the first limiting posts 41 is 4, and the number of the first limiting holes 42 is 4. For another example, the number of the first limiting posts 41 is 6, and the number of the first limiting holes 42 is 6. The specific number of the first limiting posts 41 and the specific number of the first limiting holes 42 are not limited in the embodiment of the present application.

[0050] In addition, in the embodiment of the present application, the first limiting column 41 and the first limiting hole 42 on the battery holder 40 avoid the accommodating sub-cavity 400 on the battery holder 40, that is, the first limiting column 41 and the first limiting hole 42 are arranged at a position on the battery holder 40 where the accommodating sub-cavity 400 is not arranged, so as to avoid the first limiting column 41 and the first limiting hole 42 affecting the battery cells in the accommodating sub-cavity 400 when two adjacent battery holders 40 are connected.

[0051] In addition, when the number of battery holders 40 is two, the first limiting column 41 can be set on only one battery holder 40, and the first limiting hole 42 can be set on the other battery holder 40, so that the two battery holders 40 are connected through the first limiting column 41 and the first limiting hole 42. Of course, the first limiting column 41 and the first limiting hole 42 can also be set on one battery holder 40 at the same time, and the first limiting column 41 and the first limiting hole 42 can also be set on the other battery holder 40 at the same time. When the number of battery holders 40 is greater than two, the first limiting column 41 and the first limiting hole 42 can be set on one end of each battery holder 40, and the first limiting column 41 and the first limiting hole 42 can also be set on the other end. Of course, the first limiting column 41 and the first limiting hole 42 can also be set on one end of each battery holder 40 at the same time, and the first limiting column 41 and the first limiting hole 42 can also be set on the other end.

[0052] In addition, in the embodiment of the present application, the multiple battery holders 40 can also form a battery holder group with every two battery holders 40, and the first battery holder 40 in the battery holder group is provided with a first limiting column 41 on the side facing the second battery holder 40, and the second battery holder 40 is provided with a first limiting hole 42 on the side facing the first battery holder 40, and the first limiting column 41 is embedded in the first limiting hole 42, so that the battery holder group is more stable.

[0053] In addition, in some embodiments, the battery holder 40 is provided with a connection hole 401 and a limiting groove 402 along the axial direction of the shell 30, and the connection hole 401 and the limiting groove 402 penetrate the battery holder 40, and the limiting groove 402 is connected with the connection hole 401. The battery pack also includes a connecting rod 50, and a limiting rib 51 is provided on the outer wall of the connecting rod 50, and the limiting rib 51 extends along the axial direction of the connecting rod 50. The connecting rod 50 is sequentially penetrated through the connection hole 401 on each battery holder 40 along the axial direction of the shell 30, and the limiting rib 51 is penetrated through the limiting groove 402 on each battery holder 40, and the limiting groove 402 is used to limit the limiting rib 51 to prevent the connecting rod 50 from rotating relative to the battery holder 40, and multiple battery holders 40 are connected through the connecting rod 50.

[0054] Through such a configuration, when assembling a battery pack, after connecting multiple battery holders 40 through their respective first limiting columns 41 and first limiting holes 42, in order to further improve the structural stability of the battery pack, the connecting rod 50 can also be passed through the connecting hole 401 on each battery holder 40, so that the connecting rod 50 further connects the multiple battery holders 40, making the multiple battery holders 40 more stable. In addition, the connecting rod 50 is passed through the connecting hole 401 on each battery holder 40, and the limiting rib 51 is passed through the limiting groove 402 on each battery holder 40, so that the limiting groove 402 limits the limiting rib 51, which is equivalent to limiting the connecting rod 50, avoiding the problem that the connecting rod 50 may rotate relative to the battery holder 40 when the connecting rod 50 is fixed, which is conducive to the connecting rod 50 fixing multiple battery holders 40.

[0055] It should be noted that in the embodiment of the present application, a connecting hole 401 can be provided on the connecting rod 50, and the connecting hole 401 is a threaded hole, so that the connecting screws 53 can be respectively embedded in the connecting holes 401 at both ends of the connecting rod 50, so that the connecting screws 53 are rotated, and the limiting ribs 51 on the connecting rod 50 are fixed by the limiting grooves 402, so that the connecting rod 50 will not rotate with the rotation of the connecting screws 53, that is, the connecting rod 50 is stationary relative to the battery holder 40, so that after the connecting screws 53 are rotated a preset number of times, the connecting screws 53 can enable the connecting rod 50 to further fix the multiple battery holders 40, thereby avoiding mutual shaking between two adjacent battery holders 40 among the multiple battery holders 40, thereby further improving the structural stability of the battery pack.

[0056] In addition, in the embodiment of the present application, the number of connection holes 401 on each battery bracket 40 can be set according to actual needs, and the number of connection rods 50 can be set according to actual needs. For example, three connection holes 401 are set on each battery bracket 40, and the number of connection rods 50 is 3. For another example, four connection holes 401 are set on each battery bracket 40, and the number of connection rods 50 is 4. The embodiment of the present application does not limit the number of connection rods 50 and the number of connection holes 401.

[0057] In addition, in some embodiments, the battery pack further includes a plurality of busbars 60, one busbar 60 is connected to one battery holder 40, and the battery cells in the battery holder 40 are electrically connected to the busbar 60. The battery holder 40 is provided with a second limiting column 403, the busbar 60 is provided with a second limiting hole 61, and the second limiting column 403 is embedded in the second limiting hole 61.

[0058] Through such a setting, all the cells in the battery holder 40 can be electrically connected to the bus 60, so that once the bus 60 is connected to other components of the battery pack with detection or control functions, the components with detection or control functions can detect or control all the cells in the battery holder 40 through the bus 60. That is, the bus 60 is provided, which can facilitate the corresponding control or detection of all the cells in the battery holder 40. In addition, the battery holder 40 is provided with a second limiting column 403, and the bus 60 is provided with a second limiting hole 61. The second limiting column 403 is embedded in the second limiting hole 61, which can make the bus 60 relatively stable relative to the battery holder 40, that is, the bus 60 can be fixed by the battery holder 40, so that when the bus 60 is welded with other components, the bus 60 is not easy to shake, which is conducive to the connection between the bus 60 and other components.

[0059] It should be noted that the number of the second limiting posts 403 on the battery holder 40 can be set according to actual needs, and the number of the second limiting holes 61 on the bus 60 can be set according to actual needs. For example, the number of the second limiting posts 403 is 8, and the number of the second limiting holes 61 is 8. For another example, the number of the second limiting posts 403 is 5, and the number of the second limiting holes 61 is 5. This embodiment of the application is not limited here.

[0060] In addition, in some embodiments, the battery pack also includes a circuit board module 70 and an insulating sheet 80. The circuit board module 70 is located in the accommodating cavity of the shell 30. The bus 60 is electrically connected to the circuit board module 70. The insulating sheet 80 is located between the connection point where the circuit board module 70 and the bus 60 are electrically connected and the cavity wall of the accommodating cavity of the shell 30.

[0061] By setting the circuit board module 70, the circuit board module 70 is electrically connected to the bus 60, which is equivalent to the circuit board module 70 being electrically connected to all the cells in the battery holder 40 through the bus 60, so that the circuit board module 70 can perform corresponding protection, detection or control on all the cells in the battery holder 40. That is, setting the circuit board module 70 can facilitate the corresponding protection, detection or control of all the cells in the battery holder 40. In addition, the insulating sheet 80 is located between the connection point where the circuit board module 70 is electrically connected to the bus 60 and the cavity wall of the accommodating cavity of the shell 30, so that the insulating sheet 80 can prevent the connection point where the circuit board module 70 is electrically connected to the bus 60 from being connected to the cavity wall of the accommodating cavity, resulting in the problem of leakage of the battery pack.

[0062] It should be noted that, in the embodiment of the present application, the number of the insulating sheets 80 can be set according to actual needs, for example, the number of the insulating sheets 80 is 4, and for another example, the number of the insulating sheets 80 is 5. This embodiment of the present application does not limit this.

[0063] In addition, since the multiple battery holders 40 are arranged in sequence along the axial direction of the shell 30, in order to enable the insulating sheet 80 to better insulate the electrical connection between the bus 60 and the circuit board module 70, the insulating sheet 80 can also extend along the axial direction of the shell 30, so that the insulating sheet 80 can completely cover the electrical connection between the bus 60 and the circuit board module 70, thereby better insulating.

[0064] In addition, in the embodiment of the present application, the circuit board module 70 may include a circuit board 71, a support body 72 and a connecting plate 73. There may be two circuit boards 71, and the two circuit boards 71 ​​may be spaced apart. The support body 72 supports the two circuit boards 71, and the connecting plate 73 is electrically connected to the circuit board 71, and the connecting plate 73 may extend along the axial direction of the shell 30. The bus 60 may be electrically connected to the connecting plate 73, that is, the bus 60 may be welded to the connecting plate 73, so that the bus 60 is electrically connected to the circuit board 71 through the connecting plate 73. In addition, the two circuit boards 71 ​​are supported by the support plate, which is equivalent to the two circuit boards 71 ​​being stacked by the support body 72, so that the circuit board module 70 can make full use of the internal space of the shell 30 of the battery pack and improve the space utilization rate of the internal space of the shell 30.

[0065] In addition, in some embodiments, the battery pack may further include a top cover 10 and a bottom cover 20. The shell 30 has a first opening 301 and a second opening 302 opposite to each other along the axial direction of the shell 30. The shell 30 has a receiving cavity. The first opening 301 and the second opening 302 are both connected to the receiving cavity. The top cover 10 is connected to the first opening 301 and covers the first opening 301. The bottom cover 20 is connected to the second opening 302 and covers the second opening 302. A connecting groove 31 is provided on the outer wall of the shell 30 along the axial direction of the shell 30, and the connecting groove 31 extends along the axial direction of the shell 30. A limiting buckle 101 is provided on both the top cover 10 and the bottom cover 20. The limiting buckle 101 is embedded in the connecting groove 31. The connecting groove 31 is used to limit the limiting buckle 101 to prevent the top cover 10 and the bottom cover 20 from rotating relative to the shell 30.

[0066] Through such a configuration, the top cover 10 and the bottom cover 20 are equivalent to the accommodating cavity of the closed shell 30, so that the top cover 10, the shell 30 and the bottom cover 20 enclose a relatively closed accommodating cavity. In addition, when the top cover 10 is set at the first opening 301, the limiting buckle 101 on the top cover 10 can be embedded in the connecting groove 31 on the outer wall of the shell 30, so that the connecting groove 31 can limit the limiting buckle 101 on the top cover 10, so that even if force is applied to the top cover 10 to make the top cover 10 rotate relative to the shell 30, at this time, the connecting groove 31 will block the limiting buckle 101, thereby preventing the top cover 10 from rotating relative to the shell 30. That is, by arranging the limiting buckle 101 on the top cover 10 and the limiting buckle 101 is embedded in the connecting groove 31, the top cover 10 can be prevented from rotating relative to the shell 30, thereby improving the stability of the top cover 10 relative to the shell 30. Similarly, when the bottom cover 20 is arranged at the second opening 302, the limiting buckle 101 on the bottom cover 20 can be embedded in the connecting groove 31 on the outer wall of the shell 30, so that the connecting groove 31 can limit the limiting buckle 101 on the bottom cover 20, so that even if force is applied to the bottom cover 20 to make the bottom cover 20 rotate relative to the shell 30, at this time, the connecting groove 31 will block the limiting buckle 101, thereby preventing the bottom cover 20 from rotating relative to the shell 30. That is, by providing the limiting buckle 101 on the bottom cover 20 and the limiting buckle 101 being embedded in the connecting groove 31, the bottom cover 20 can be prevented from rotating relative to the shell 30, thereby improving the stability of the bottom cover 20 relative to the shell 30.

[0067] It should be noted that in the embodiment of the present application, the number of connection grooves 31 can be set according to actual needs. For example, the number of connection grooves 31 is 4, and for another example, the number of connection grooves 31 is 3. In this regard, the embodiment of the present application is not limited here. In addition, when the number of connection grooves 31 is multiple, the multiple connection grooves 31 can be distributed on the outer wall of the shell 30 at intervals along the circumferential direction of the shell 30. In addition, the number of limit buckles 101 can be set according to actual needs. The number of limit buckles 101 on the top cover 10 can be equal to the number of connection grooves 31, and the number of limit buckles 101 on the bottom cover 20 can be equal to the number of connection grooves 31.

[0068] In addition, in the embodiment of the present application, the connection groove 31 can be formed in different ways, for example, directly grooved on the outer wall of the shell 30, or for another example, the outer wall of the shell 30 is concave to form the connection groove 31. The embodiment of the present application does not limit the formation method of the connection groove 31.

[0069] In addition, in some embodiments, a fixing hole 102 is provided on the top cover 10 and the bottom cover 20 , a fixing member 200 is passed through the fixing hole 102 , and the fixing member 200 is embedded in the connecting groove 31 , and the fixing member 200 is used to fix the top cover 10 to the shell 30 , and to fix the bottom cover 20 to the shell 30 .

[0070] With such a configuration, when the top cover 10 is disposed at the first opening 301, the fixing member 200 can be inserted through the fixing hole 102 disposed on the top cover 10, and the fixing member 200 can be embedded in the connecting groove 31, so that the fixing member 200 can further connect the top cover 10 with the housing 30, making the top cover 10 and the housing 30 more stable. Similarly, when the bottom cover 20 is disposed at the second opening 302, the fixing member 200 can be inserted through the fixing hole 102 disposed on the bottom cover 20, and the fixing member 200 can be embedded in the connecting groove 31, so that the fixing member 200 can further connect the bottom cover 20 with the housing 30, making the bottom cover 20 and the housing 30 more stable.

[0071] It should be noted that the fixing member 200 may be a fastening screw, in which case a thread may be provided on the groove wall of the connecting groove 31, so that the fastening screw may be inserted into the connecting groove 31 and threadedly connected with the groove wall of the connecting groove 31, which may facilitate the fixing member 200 to fix the top cover 10 to the shell 30, or the fixing member 200 to fix the bottom cover 20 to the shell 30. Of course, the fixing member 200 may also have an interference fit with the connecting groove 31, so that the fixing member 200 is not easy to be separated from the connecting groove 31, and the fixing member 200 may also fix the top cover 10 to the shell 30, or the fixing member 200 may fix the bottom cover 20 to the shell 30.

[0072] In addition, the number of the fixing holes 102 on the top cover 10 may be equal to the number of the connecting grooves 31 , and the number of the fixing holes 102 on the bottom cover 20 may be equal to the number of the connecting grooves 31 .

[0073] In addition, in some embodiments, the battery pack also includes a limiting rubber shell 90, and a limiting platform 103 is provided on the side of the top cover 10 facing the shell 30 and the side of the bottom cover 20 facing the shell 30. The limiting platform 103 extends along the circumferential direction of the shell 30. The top cover 10 is fixed to the inner wall of the shell 30 at the first opening 301 through the limiting rubber shell 90, and the bottom cover 20 is fixed to the inner wall of the shell 30 at the second opening 302 through the limiting rubber shell 90. The limiting rubber shell 90 is used to fix the limiting platform 103 to prevent the top cover 10 and the bottom cover 20 from shaking relative to the shell 30.

[0074] Through such a configuration, when the top cover 10 is connected to the first opening 301, the limit platform 103 on the top cover 10 can be abutted against the limit rubber shell 90, and the limit rubber shell 90 is connected to the inner wall of the shell 30, which is equivalent to the limit platform 103 being connected to the inner wall of the shell 30 through the limit rubber shell 90, and the limit platform 103 extends along the circumferential direction of the shell 30. Once the limit platform 103 is connected to the inner wall of the shell 30, the limit platform 103 can limit the top cover 10 to prevent the top cover 10 from shaking relative to the shell 30. Similarly, when the bottom cover 20 is connected to the second opening 302, the limit platform 103 on the bottom cover 20 can be abutted against the limit rubber shell 90, and the limit rubber shell 90 is connected to the inner wall of the shell 30, which is equivalent to the limit platform 103 being connected to the inner wall of the shell 30 through the limit rubber shell 90, and the limit platform 103 extends along the circumferential direction of the shell 30. Once the limit platform 103 is connected to the inner wall of the shell 30, the limit platform 103 can limit the bottom cover 20 to prevent the bottom cover 20 from shaking relative to the shell 30.

[0075] It should be noted that the limiting platform 103 on the top cover 10 can surround the central axis of the top cover 10 , and the limiting platform 103 on the bottom cover 20 can surround the central axis of the bottom cover 20 .

[0076] In addition, in some embodiments, a snap-on assembly 100 is provided on the side of the top cover 10 facing away from the shell 30, and the snap-on assembly 100 includes a snap-on switch 110, a movable snap-on 120 and an elastic member 130, one end of the elastic member 130 is fixedly connected to the top cover 10, the snap-on switch 110 is fixedly connected to the other end of the elastic member 130, the movable snap-on 120 is connected to the snap-on switch 110, and the movable snap-on 120 drives the snap-on switch 110 to move along the extension and contraction direction of the elastic member 130 so that it can be extended outward from the top cover 10 or retracted inward from the top cover 10, and the snap-on switch 110 is used to connect the top cover 10 to the device to be powered.

[0077] Through such a setting, when the battery pack needs to be connected to the device to be powered, the snap switch 110 can be extended out of the top cover 10. At this time, the elastic member 130 can be in a natural state, that is, the snap switch 110 protrudes out of the top cover 10, and the snap switch 110 can be connected to the device to be powered, so as to achieve the connection between the battery pack and the device to be powered. When the battery pack needs to be replaced, force can be applied to the moving activity so that the moving snap 120 drives the snap switch 110 to move along the extension direction of the elastic member 130, that is, the snap switch 110 is driven to move by the moving activity so that the snap switch 110 squeezes the elastic member 130. After the elastic member 130 is compressed, the snap switch 110 can be retracted into the top cover 10, thereby achieving the separation of the top cover 10 and the device to be powered, that is, achieving the separation of the battery pack and the device to be powered. That is, by providing the snap assembly 100, the top cover 10 can be easily connected to the device to be powered, that is, the battery pack can be easily connected to the device to be powered, and at the same time, it is also easy to remove the battery pack from the device to be powered.

[0078] It should be noted that the elastic member 130 may be a spring, and of course, the elastic member 130 may also be a spring sheet, which is not limited in the present embodiment of the application.

[0079] In addition, in some embodiments, a handle 140 is provided on the side of the top cover 10 facing away from the housing 30, and the handle 140 is movably connected to the top cover 10. With such a configuration, when the battery pack needs to be carried, the battery pack can be directly carried by the handle 140. That is, by providing the handle 140, it is convenient for operators to carry the battery pack and also convenient for operators to carry the battery pack.

[0080] It should be noted that, in the embodiment of the present application, the handle 140 and the top cover 10 can be movably connected through a rotating shaft. Of course, the handle 140 and the top cover 10 can also be movably connected in other ways. For example, the handle 140 can also be provided with a cylindrical rotating boss, and the top cover 10 is provided with a rotating hole, and the rotating boss is embedded in the rotating hole to achieve the movable connection between the handle 140 and the top cover 10. The specific connection method of the handle 140 and the top cover 10 is not limited in the embodiment of the present application.

[0081] In the embodiment of the present application, since the plurality of battery holders 40 are stacked in sequence along the axial direction of the housing 30, the battery holder 40 has a receiving sub-cavity 400, and the receiving sub-cavity 400 contains a battery cell, therefore, the battery cell and the battery holder 40 can form a battery module, which is equivalent to a battery pack having a plurality of battery modules, and one of the two adjacent battery holders 40 is provided with a first limiting column 41, and the other is provided with a first limiting hole 42, the first limiting column 41 and the first limiting hole 42 are arranged oppositely and the first limiting column 41 is embedded in the first limiting hole 42, so that the two adjacent battery holders 40 are connected, and the battery holders 40 can be made more stable. That is, in the embodiment of the present application, by connecting any two adjacent battery holders 40 in the plurality of battery holders 40 in the housing 30 through the first limiting column 41 and the first limiting hole 42, the plurality of battery holders 40 are made more stable, so that even if the battery pack is shaken, the plurality of battery holders 40 can still remain stable due to the mutual connection, so that the structural stability of the battery pack is improved.

[0082] An embodiment of the present application provides an electric device, which includes the battery pack in any of the above embodiments.

[0083] Among them, the electric device can be an electric car. Of course, the electric device can also be of other types. The specific type of the electric device is not limited in the embodiments of the present application.

[0084] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0085] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A battery pack, characterized in that: The battery pack comprises: case; A plurality of battery holders, wherein the plurality of battery holders are arranged on the shell, and the plurality of battery holders are stacked along the axial direction of the shell, and the battery holders have a receiving subcavity, and the receiving subcavity receives a battery cell; An assembly structure, wherein the assembly structure includes a first limiting column and a first limiting hole, wherein the first limiting column is arranged on one of the two adjacent battery brackets, and the first limiting hole is arranged on the other of the two adjacent battery brackets, the first limiting column and the first limiting hole are arranged opposite to each other and the first limiting column is embedded in the first limiting hole, so as to connect the two adjacent battery brackets.

2. The battery pack according to claim 1, characterized in that: The battery holder is provided with a connection hole and a limiting groove along the axial direction of the shell, and the connection hole and the limiting groove penetrate the battery holder, and the limiting groove is communicated with the connection hole; The battery pack also includes a connecting rod, and a limiting rib is arranged on the outer wall of the connecting rod, and the limiting rib extends along the axial direction of the connecting rod. The connecting rod is sequentially penetrated through the connecting holes on each of the battery holders along the axial direction of the shell, and the limiting rib is penetrated through the limiting groove on each of the battery holders, and the limiting groove is used to limit the limiting rib to prevent the connecting rod from rotating relative to the battery holder, and a plurality of the battery holders are connected via the connecting rod.

3. The battery pack according to claim 1, characterized in that: The battery pack further comprises a plurality of bus bars, one of the bus bars is connected to one of the battery holders, and the battery cells in the battery holder are electrically connected to the bus bars; Wherein, a second limiting column is arranged on the battery bracket, a second limiting hole is arranged on the bus bar, and the second limiting column is embedded in the second limiting hole.

4. The battery pack according to claim 3, characterized in that: The battery pack also includes a circuit board module and an insulating sheet. The circuit board module is located in the shell, the bus is electrically connected to the circuit board module, and the insulating sheet is located between the connection point where the circuit board module and the bus are electrically connected and the inner wall of the shell.

5. The battery pack according to claim 1, characterized in that: The battery pack also includes a top cover and a bottom cover; The shell has a first opening and a second opening opposite to each other along the axial direction of the shell, the shell has a receiving cavity, the first opening and the second opening are both communicated with the receiving cavity, the top cover is connected to the first opening and covers the first opening, and the bottom cover is connected to the second opening and covers the second opening; A connecting groove is provided on the outer wall of the shell along the axial direction of the shell, and the connecting groove extends along the axial direction of the shell; The top cover and the bottom cover are both provided with limit buckles, the limit buckles are embedded in the connecting grooves, and the connecting grooves are used to limit the limit buckles to prevent the top cover and the bottom cover from rotating relative to the shell.

6. The battery pack according to claim 5, characterized in that: The top cover and the bottom cover are both provided with fixing holes, the fixing holes are penetrated by fixing members, and the fixing members are embedded in the connecting grooves, and the fixing members are used to fix the top cover to the shell, and to fix the bottom cover to the shell.

7. The battery pack according to claim 5, characterized in that: The battery pack also includes a limiting rubber shell, and a limiting platform is provided on the side of the top cover facing the shell and the side of the bottom cover facing the shell, and the limiting platform extends along the circumferential direction of the shell. The top cover is fixed to the inner wall of the shell at the first opening through the limiting rubber shell, and the bottom cover is fixed to the inner wall of the shell at the second opening through the limiting rubber shell. The limiting rubber shell is used to fix the limiting platform to prevent the top cover and the bottom cover from shaking relative to the shell.

8. The battery pack according to claim 5, characterized in that: A snap assembly is provided on the side of the top cover facing away from the shell, and the snap assembly includes a snap switch, a movable snap and an elastic member, one end of the elastic member is fixedly connected to the top cover, the snap switch is fixedly connected to the other end of the elastic member, the movable snap is connected to the snap switch, and the movable snap drives the snap switch to move along the extension and contraction direction of the elastic member so that the snap switch extends outward from the top cover or retracts inward from the top cover, and the snap switch is used to connect the top cover to the device to be powered.

9. The battery pack according to claim 5, characterized in that: A handle is provided on a side of the top cover facing away from the shell, and the handle is movably connected to the top cover.

10. An electrical device, characterized in that: The electrical equipment comprises the battery pack according to any one of claims 1-9.

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