Batteries and electrical equipment

Abstract

The present application discloses a battery and an electrical device, wherein the battery is provided with two containers, each of which is provided with a accommodating cavity, in which a battery cell is provided, and a pole ear in the battery cell extends out of an adjacent side wall at one end away from a main body in a first direction, at least two containers are arranged along a second direction, and at least two containers are rotatably connected between two adjacent side edges in the second direction, so that the two containers can be stacked along a third direction, and further the battery cells in at least two containers can be stacked along the third direction, thereby increasing the space utilization rate of the battery in the third direction and improving the energy density of the battery, and the arrangement of the containers can protect the battery cell and improve the service life of the battery.

Description

Technical Field

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

[0002] When assembling a battery, it is necessary to assemble the battery cell and the circuit board. Specifically, the tabs of the battery cell need to be electrically connected to the circuit board. When the main body thickness of the battery cell is small, the circuit board will exceed the main body of the battery cell in the thickness direction of the battery cell, causing the circuit board to occupy too much space in the thickness direction, resulting in a waste of space in the thickness direction, and then leading to low battery energy density. Utility Model Content

[0003] The purpose of the present application is to provide a battery and an electrical device to solve the problem of low battery energy density caused by space waste in the thickness direction of the current battery.

[0004] A first aspect of an embodiment of the present application provides a battery, comprising: a battery cell, the battery cell comprising a main body and a pole ear, the main body having a first direction, a second direction and a third direction intersecting each other, the pole ear being arranged at a first end of the main body along the first direction; at least two accommodating members, at least two of the accommodating members being arranged along the second direction, the accommodating member having an accommodating cavity therein, the battery cell being arranged in the accommodating cavity, the accommodating member comprising two side walls arranged opposite to each other along the first direction, the pole ear of the battery cell extending out of an adjacent side wall at an end of the battery cell that is away from the main body in the first direction; wherein the accommodating member comprises two side edges arranged opposite to each other along the second direction, the two adjacent side edges in the second direction being rotatably connected so that at least two of the accommodating members can be stacked along the third direction, so that the battery cells accommodated in the at least two of the accommodating members can be stacked along the third direction.

[0005] Optionally, the battery further comprises a circuit board, which is arranged on a side of the pole lug away from the main body in the first direction; an end of the pole lug away from the main body in the first direction is electrically connected to the circuit board.

[0006] Optionally, the circuit board includes a first surface and a second surface arranged opposite to each other along the third direction, and the distance between the first surface and the second surface in the third direction is H1; the housing includes a first surface and a second surface arranged opposite to each other along the third direction, two of the housings are stacked along the third direction, the two first surfaces are in contact with each other along the third direction, and the distance between the two second surfaces in the third direction is H2; satisfying: H1≤H2.

[0007] Optionally, the circuit board includes a first wall, the first wall and the side wall are arranged opposite to each other along the first direction; a connecting piece is provided on the first wall, the connecting piece corresponds to the pole lug in number one by one, and the pole lug is electrically connected to the circuit board through the connecting piece.

[0008] Optionally, one battery cell is disposed in each of the accommodating cavities, and in two battery cells stacked along the third direction, at least some of the tabs are arranged at intervals along the second direction.

[0009] Optionally, the electrode tab includes a positive electrode tab and a negative electrode tab, the positive electrode tab and the negative electrode tab are arranged at intervals along the second direction, and the positive electrode tab and the negative electrode tab are arranged on the same side of the first end in the second direction; the two battery cells are stacked along the third direction, and the positive electrode tabs and negative electrode tabs of the two battery cells are arranged at intervals along the second direction.

[0010] Optionally, a mounting opening for mounting the battery cell into the accommodating cavity is provided on the first surface; the two accommodating members are stacked along the third direction, and the two mounting openings are arranged opposite to each other along the third direction.

[0011] Optionally, at least one of the two mounting openings is internally connected with an insulating film.

[0012] Optionally, at least one of the two mounting openings is internally connected with a heat dissipation film; and the insulating film and the heat dissipation film are overlapped along the third direction.

[0013] Optionally, the battery includes a converter, the converter extends along the first direction, the converter is disposed between two adjacent side edges in the second direction, and the two adjacent side edges are rotatably connected through the converter.

[0014] A second aspect of an embodiment of the present application provides an electrical device, comprising the battery as described above.

[0015] In summary, the embodiments of the present application provide a battery and an electrical device having the battery, wherein the battery is provided with two containers, each of which is provided with a accommodating cavity, a battery cell is provided in the accommodating cavity, and a pole ear in the battery cell extends out of an adjacent side wall at one end away from the main body in a first direction, at least two containers are arranged along a second direction, and at least two containers are rotatably connected between two adjacent side edges in the second direction, so that the two containers can be stacked along a third direction, and then the battery cells in at least two containers can be stacked along the third direction, thereby increasing the space utilization of the battery in the third direction and improving the energy density of the battery, and the arrangement of the containers can protect the battery cells and improve the service life of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 is a schematic diagram of the structure of a battery provided in an embodiment of the present application;

[0018] Figure 2 is a schematic diagram of the structure of a battery cell in a battery provided in an embodiment of the present application;

[0019] Figure 3 is a schematic structural diagram of a container in a battery provided in an embodiment of the present application in an unfolded state;

[0020] Figure 4 It is a schematic diagram of the combined structure of the container and the battery cell in the unfolded state provided in the embodiment of the present application;

[0021] Figure 5 is a schematic diagram of the combined structure of the container and the battery cell in a folded state in the battery provided by an embodiment of the present application;

[0022] Figure 6 It is a schematic diagram of the structure of the circuit board in the battery provided in the embodiment of the present application;

[0023] Figure 7 It is a schematic diagram of the combined structure of the circuit board and the battery cell in the battery provided in the embodiment of the present application.

[0024] Description of main reference numerals:

[0025] 1.Battery;

[0026] 10. battery cell, 101. first battery cell, 102. second battery cell, 11. main body, 111. first end, 112. second end, 12. tab, 121. positive tab, 122. negative tab;

[0027] 20. accommodating member, 201. first accommodating member, 202. second accommodating member, 21. accommodating cavity, 22. side wall, 221. first side wall, 2211. opening, 222. second side wall, 23. side edge, 231. first side edge, 232. second side edge, 24. first surface, 241. mounting opening, 25. second surface;

[0028] 30. Circuit board, 31. First surface, 32. Second surface, 33. First wall, 34. Second wall, 35. Connecting sheet;

[0029] 40. Adapter;

[0030] X, first direction, Y, second direction, Z, third direction. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and beneficial effects of this application more clear, the following further describes this application in detail in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementation methods described in this specification are only for explaining this application, not for limiting this application.

[0032] 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" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" refers to two or more, unless otherwise clearly and specifically defined.

[0033] 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, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0034] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0035] In the application examples, "parallel" means that the angle formed by a straight line, a straight line and a plane, or a plane and a plane is -1° to 1°. In addition, "perpendicular" means that the angle formed by a straight line, a straight line and a plane, or a plane and a plane is 89° to 91°. Equal distances or equal angles refer to a state where the tolerance range is -1% to 1%.

[0036] This embodiment provides an electrical device, including a battery 1. The electrical device may be a mobile phone, a tablet computer, etc. The battery 1 provides power for the mobile phone and the tablet computer.

[0037] In some embodiments, a battery 1 is provided, referring to Figure 1 to Figure 5 The battery 1 includes: a battery cell 10 and at least two containers 20.

[0038] In some embodiments, reference Figure 2 The battery cell 10 includes a main body 11 and a tab 12. The main body 11 has a first direction X, a second direction Y and a third direction Z that intersect each other. Figure 2 In the embodiment shown, the first direction X, the second direction Y and the third direction Z are orthogonal to each other, the first direction X is the length direction of the main body 11, the second direction Y is the width direction of the main body 11, and the third direction Z is the thickness direction of the main body 11. The main body 11 includes a positive electrode sheet, a separator and a negative electrode sheet. The positive electrode sheet and the negative electrode sheet are arranged on both sides of the thickness direction of the separator. The positive electrode sheet, the separator and the negative electrode sheet are stacked along the third direction Z to form a stacked structure of the battery cell 10. The positive electrode sheet, the separator and the negative electrode sheet are wound to form a wound structure of the battery cell 10. The main body 11 includes a positive electrode sheet, a separator and a negative electrode sheet. The main body 11 includes a first end 111 and a second end 112 that are relatively arranged along the first direction X, a pole ear 12 is arranged at the first end 111 of the main body 11, and the pole ear 12 extends along the first direction X. The pole ear 12 includes a positive pole ear 121 and a negative pole ear 122. Specifically, a positive pole sheet surface portion is provided with a positive active material, and a portion of the positive pole sheet surface that is not provided with a positive active material is cut to form a positive pole ear 121, and a negative pole sheet surface portion is provided with a negative active material, and a portion of the negative pole sheet surface that is not provided with a negative active material is cut to form a negative pole ear 122. In other implementations, the positive pole ear 121 is welded to the positive pole sheet in the main body 11, and the negative pole ear 122 is welded to the negative pole sheet in the main body 11.

[0039] In some embodiments, the number of the receiving members 20 is at least two, as shown in FIG. Figure 1 as well as Figure 3 to Figure 5In the embodiment shown, there are two accommodating members 20, and the two accommodating members 20 include a first accommodating member 201 and a second accommodating member 202. The first accommodating member 201 and the second accommodating member 202 are arranged at intervals along the second direction Y. The first accommodating member 201 and the second accommodating member 202 are respectively provided with an accommodating cavity 21, and the battery cell 10 is arranged in the accommodating cavity 21. Figure 1 as well as Figure 4 and Figure 5 In the illustrated embodiment, the number of battery cells 10 accommodated in the accommodation cavity 21 of the first accommodation member 201 is one, and the number of battery cells 10 accommodated in the accommodation cavity 21 of the second accommodation member 202 is one.

[0040] In other implementations, the number of battery cells 10 accommodated in the accommodating cavity 21 of the first accommodating member 201 is two or more. Taking two battery cells 10 as an example, the two battery cells 10 are stacked along the thickness direction Z, or the two battery cells 10 are arranged at intervals along the second direction Y. Similarly, the number of battery cells 10 accommodated in the accommodating cavity 21 of the second accommodating member 202 is two, the two battery cells 10 are stacked along the thickness direction Z, or the two battery cells 10 are arranged at intervals along the second direction Y. Only the following conditions need to be met: the number of battery cells 10 accommodated in the first accommodating member 201 and the second accommodating member 202 is the same, the arrangement of the battery cells 10 in the first accommodating member 201 and the second accommodating member 202 is the same, both are stacked along the third direction Z, or both are arranged along the second direction Y. Reference Figure 1 as well as Figure 3 to Figure 5 The container 20 includes two side walls 22 arranged opposite to each other along a first direction X, the two side walls 22 include a first side wall 221 and a second side wall 222, and also includes two side edges 23 arranged opposite to each other along a second direction Y, the two side edges 23 include a first side edge 231 and a second side edge 232, and also includes a first surface 24 and a second surface 25 arranged opposite to each other along a third direction Z. The battery cell 10 is accommodated in the accommodating cavity 21 of the container 20, and one end of the pole ear 12 of the battery cell 10 facing away from the main body 11 in the first direction X extends out of the container 20 from the first side wall 221.

[0041] Reference Figure 1 as well as Figure 3 to Figure 5 The first container 201 and the second container 202 are rotatably connected between two adjacent side edges 23 in the second direction Y. Specifically, the first side edge 231 of the first container 201 and the second side edge 232 of the second container 202 are rotatably connected, so that the first container 201 and the second container 202 can be stacked along the third direction Z, thereby making the battery cell 10 accommodated in the accommodation cavity 21 of the first container 201 and the battery cell 10 accommodated in the accommodation cavity 21 of the second container 202 stacked along the third direction Z. Specifically, Figure 1 as well as Figure 4-5In the illustrated embodiment, there are two battery cells 10, including a first battery cell 101 and a second battery cell 102. The first battery cell 101 is accommodated in the accommodation cavity 21 of the first accommodation member 201, and the second battery cell 102 is accommodated in the accommodation cavity 21 of the second accommodation member 202. When assembling the battery, the battery cell placed in the battery compartment needs to be connected to the circuit board, specifically, the tabs of the battery cell are electrically connected to the circuit board, and then the circuit board is electrically connected to the electrical device, so as to realize the purpose of the battery supplying power to the electrical device. However, when the thickness of the main body of the battery cell in the battery is small, the circuit board will exceed the main body of the battery cell in the thickness direction. In order to accommodate the circuit board, it is necessary to increase the accommodation space in the thickness direction, resulting in a waste of space in the thickness direction, and then resulting in a relatively low energy density of the battery.

[0042] The battery 1 provided in the embodiment of the present application is provided with a first accommodating member 201 and a second accommodating member 202 arranged at intervals along the second direction Y, and the first battery cell 101 is accommodated in the accommodating cavity 21 of the first accommodating member 201, and the second battery cell 102 is accommodated in the accommodating cavity 21 of the second accommodating member 202, the pole ear 12 of the first battery cell 101 extends out from the first side wall 221 of the first accommodating member 201, and the pole ear 12 of the second battery cell 102 extends out from the first side wall 221 of the second accommodating member 202, and the first accommodating member 201 The first side 231 of the container 20 is rotatably connected to the second side 232 of the second container 202, so that the first container 201 and the second container 202 can be stacked along the third direction Z, and then the first battery cell 101 and the second battery cell 102 are stacked along the third direction Z, thereby improving the space utilization of the battery 1 in the third direction Z and improving the energy density of the battery 1. In addition, the setting of the container 20 can protect the first battery cell 101 and the second battery cell 102 accommodated therein, thereby improving the service life of the battery 1.

[0043] In some embodiments, the number of the containers 20 is three, and the three containers 20 are arranged along the second direction Y. Along the second direction Y, two adjacent side edges 23 of two adjacent containers 20 are rotationally connected, so that the three containers 20 can be stacked along the third direction Z.

[0044] In some embodiments, the number of the containers 20 is three, among which two containers 20 are stacked along the third direction Z, and another container 20 is connected to one of the two containers 20 stacked along the third direction Z in sequence along the second direction Y.

[0045] In other implementations, the number of the receiving members 20 may be four or more, which is selected based on actual usage requirements.

[0046] In some embodiments, reference Figure 1 as well as Figure 6-7The battery 1 further includes a circuit board 30, which is disposed on a side of the tab 12 away from the main body 11 in the first direction X. Figure 1 In the illustrated embodiment, the circuit board 30 is arranged on the outer side of the first side wall 221 of the accommodating member 20 which is away from the second side wall 222 in the first direction X, and the end of the pole ear 12 which is away from the main body 11 in the first direction X is electrically connected to the circuit board 30, that is, the end of the pole ear 12 which extends out of the first side wall 221 in the first direction X is electrically connected to the circuit board 30.

[0047] In some embodiments, reference Figure 3 to Figure 5 An opening 2211 is formed on the first side wall 221 of the container 20. Specifically, an opening 2211 is formed on the first side wall 221 of the first container 201, and an opening 2211 is formed on the first side wall 221 of the second container 202. The positive electrode tab 121 and the negative electrode tab 122 extend from adjacent openings 2211 and are electrically connected to the circuit board 30 respectively.

[0048] In some embodiments, reference Figure 1 The circuit board 30 includes a first surface 31 and a second surface 32 arranged opposite to each other along a third direction Z, the distance between the first surface 31 and the second surface 32 in the third direction Z is H1, the first accommodating member 201 and the second accommodating member 202 are overlapped along the third direction Z, the first surface 24 of the first accommodating member 201 and the first surface 24 of the second accommodating member 202 are in contact with each other along the third direction Z, the second surface 25 of the first accommodating member 201 and the second surface 25 of the second accommodating member 202 are arranged opposite to each other along the third direction Z, and the distance between the second surface 25 of the first accommodating member 201 and the second surface 25 of the second accommodating member 202 in the third direction Z is H2; satisfying: H1≤H2. When the relationship between H1 and H2 satisfies H1≤H2, it indicates that the height of the first container 201 and the second container 202 in the third direction Z after being stacked is not lower than the circuit board 30, thereby avoiding the waste of space in the third direction Z (i.e., the thickness direction of the battery cell) due to the height of the circuit board 30 being higher than the thickness of the battery cell, improving the space utilization in the third direction Z, and thus ensuring the energy density of the battery 1.

[0049] In some embodiments, reference Figure 1 and Figure 6 The circuit board 30 includes a first wall 33 and a second wall 34 arranged opposite to each other along the first direction X. The first wall 33 is arranged opposite to the side wall 22 of the container 20. Specifically, the first wall 33 is arranged opposite to the first side wall 221 of the first container 201 along the first direction X. The first wall 33 is arranged opposite to the first side wall 221 of the second container 202 along the first direction X. Figure 5 and Figure 6A connecting piece 35 is provided on the first wall 33 of the circuit board 30. The connecting pieces 35 correspond to the pole ears 12 in number. The pole ears 12 are electrically connected to the circuit board 30 through the connecting pieces 35. Specifically, the positive pole ear 121 and the negative pole ear 122 of the first battery cell 101 are respectively connected to a connecting piece 35, and the positive pole ear 121 and the negative pole ear 122 of the second battery cell 102 are respectively connected to a connecting piece 35, so that the two battery cells 10 stacked along the third direction Z are connected through a circuit board 30, thereby further improving the space utilization.

[0050] In some embodiments, reference Figure 5 and Figure 7 The first battery cell 101 and the second battery cell 102 are stacked along the third direction Z, and the negative electrode tab 122 and the positive electrode tab 121 of the first battery cell 101 and the negative electrode tab 122 and the positive electrode tab 121 of the second battery cell 102 are arranged at intervals along the second direction Y, so that the tabs 12 on the two battery cells 10 are electrically connected to a circuit board 30, thereby improving the convenience of assembling the battery 1.

[0051] In some embodiments, reference Figure 6 and Figure 7 The shape of the connecting piece 35 is L-shaped, which can ensure the stability of the connection between the connecting piece 35 and the pole ear 12.

[0052] In some embodiments, reference Figure 3 and Figure 4 A mounting opening 241 is provided on the first surface 24 of the accommodating member 20. Specifically, a mounting opening 241 is provided on the first surface 24 of the first accommodating member 201 and the first surface 24 of the second accommodating member 202 respectively. The first accommodating member 201 and the second accommodating member 202 are overlapped along the third direction Z. The mounting opening 241 of the first accommodating member 201 and the mounting opening 241 of the second accommodating member 202 are arranged opposite to each other along the third direction Z. The mounting opening 241 allows the power core 10 to be loaded into the accommodating cavity 21, which can improve the convenience of assembling the battery 1.

[0053] In some embodiments, the installation opening 241 of the first container 201 and the installation opening 241 of the second container 202 are respectively provided with an insulating film. The provision of the insulating film can insulate the first battery cell 101 from the second battery cell 102 when the first container 201 and the second container 202 are stacked along the third direction Z, thereby avoiding a short circuit between the first battery cell 101 and the second battery cell 102 and improving the service life and safety of the battery 1.

[0054] In some embodiments, the installation port 241 of the container 201 and the installation port 241 of the second container 202 are respectively provided with a heat dissipation film. The setting of the heat dissipation film can improve the heat dissipation performance of the container cavity 21 while forming a blockage for the installation port 241, and can also avoid the short circuit between the first battery cell 101 and the second battery cell 102 to a certain extent, thereby improving the service life and safety of the battery 1.

[0055] In some embodiments, the installation port 241 of the container 201 and the installation port 241 of the second container 202 are respectively provided with an insulating film and a heat dissipation film, and the insulating film and the heat dissipation film are stacked along the third direction Z, thereby achieving insulation protection and heat dissipation between the first battery cell 101 and the second battery cell 102, thereby improving the service life and safety of the battery 1.

[0056] In some embodiments, reference Figure 1 , Figure 3 and Figure 4 The battery 1 also includes a conversion member 40, which extends along the first direction X. The conversion member 40 is arranged between the first side 231 of the first accommodating member 201 and the second side 232 of the second accommodating member 202. Specifically, the first side 231 of the first accommodating member 201 and the second side 232 of the second accommodating member 202 are rotatably connected through the conversion member 40, so that the first accommodating member 201 and the second accommodating member 202 can be stacked along the third direction Z.

[0057] In some embodiments, the adapter 40 is a rotating shaft, and a rotational connection is formed between the first side edge 231 of the first accommodating member 201 and the second side edge 232 of the second accommodating member 202 via the rotating shaft.

[0058] In some embodiments, the adapter 40 is a hinge, and a rotational connection is formed between the first side edge 231 of the first accommodating member 201 and the second side edge 232 of the second accommodating member 202 via the hinge.

[0059] The assembly method of the battery 1 provided in the embodiment of the present application is as follows:

[0060] S1. Place the first battery cell 101 in the accommodating cavity 21 of the first accommodating member 201 through the mounting opening 241 of the first accommodating member 201, and the pole ear 12 of the first battery cell 101 extends out from the opening 2211 on the first side wall 221 of the first accommodating member 201; place the second battery cell 102 in the accommodating cavity 21 of the second accommodating member 202 through the mounting opening 241 of the second accommodating member 202, and the pole ear 12 of the second battery cell 102 extends out from the opening 2211 on the first side wall 221 of the second accommodating member 202;

[0061] S2, stacking a cover insulating film and a heat dissipation film at the mounting opening 241 of the first container 201, and stacking a cover insulating film and a heat dissipation film at the mounting opening 241 of the second container 202;

[0062] S3, rotating the second accommodating member 202 by 180° through the adapter 40, so that the first surface 24 of the second accommodating member 202 is in contact with the first surface 24 of the first accommodating member 201, and the first accommodating member 201 and the second accommodating member 202 are overlapped along the third direction Z;

[0063] S4 , welding the tabs 12 of the first battery cell 101 and the tabs 12 of the second battery cell 102 to the connecting pieces 35 of the circuit board 30 , respectively, to complete the assembly of the battery 1 .

[0064] The technical solutions provided by the embodiments of the present application are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A battery, characterized in that: include: A battery cell (10), the battery cell (10) comprising a main body (11) and a pole lug (12), the main body (11) having a first direction (X), a second direction (Y) and a third direction (Z) intersecting in pairs, the pole lug (12) being arranged at a first end (111) of the main body (11) along the first direction (X); at least two accommodating members (20), at least two of the accommodating members (20) being arranged along the second direction (Y), the accommodating member (20) being provided with an accommodating cavity (21), the battery cell (10) being arranged in the accommodating cavity (21), the accommodating member (20) comprising two side walls (22) arranged opposite to each other along the first direction (X), and an end of a pole ear (12) of the battery cell (10) that is away from the main body (11) in the first direction (X) extending out of an adjacent side wall (22); The container (20) comprises two side edges (23) arranged opposite to each other along the second direction (Y), and two adjacent side edges (23) in the second direction (Y) are rotatably connected so that at least two of the containers (20) can be stacked along the third direction (Z), so that the battery cells (10) accommodated in the at least two containers (20) can be stacked along the third direction (Z).

2. The battery according to claim 1, characterized in that The battery further comprises a circuit board (30), wherein the circuit board (30) is arranged on a side of the tab (12) away from the main body (11) in the first direction (X); One end of the pole lug (12) away from the main body (11) in the first direction (X) is electrically connected to the circuit board (30).

3. The battery according to claim 2, characterized in that The circuit board (30) comprises a first surface (31) and a second surface (32) arranged opposite to each other along the third direction (Z), and a distance between the first surface (31) and the second surface (32) in the third direction (Z) is H1; The container (20) comprises a first surface (24) and a second surface (25) which are arranged opposite to each other along the third direction (Z); the two container members (20) are stacked along the third direction (Z); the two first surfaces (24) are in contact with each other along the third direction (Z); and the distance between the two second surfaces (25) in the third direction (Z) is H2; Satisfies: H1≤H2.

4. The battery according to claim 2, characterized in that The circuit board (30) comprises a first wall (33), wherein the first wall (33) and the side wall (22) are arranged opposite to each other along the first direction (X); A connecting piece (35) is provided on the first wall (33), the connecting pieces (35) and the pole tabs (12) correspond in number to each other, and the pole tabs (12) are electrically connected to the circuit board (30) via the connecting pieces (35).

5. The battery according to claim 1, characterized in that One of the battery cells (10) is disposed in each of the accommodating cavities (21), and in two of the battery cells (10) stacked along the third direction (Z), at least a portion of the tabs (12) are arranged at intervals along the second direction (Y).

6. The battery according to claim 5, characterized in that The electrode tab (12) comprises a positive electrode tab (121) and a negative electrode tab (122), the positive electrode tab (121) and the negative electrode tab (122) are arranged at intervals along the second direction (Y), and the positive electrode tab (121) and the negative electrode tab (122) are arranged on the same side of the first end (111) in the second direction (Y); The two battery cells (10) are stacked along the third direction (Z), and the positive electrode tabs (121) and negative electrode tabs (122) of the two battery cells (10) are arranged at intervals along the second direction (Y).

7. The battery according to claim 3, characterized in that The first surface (24) is provided with an installation opening (241) for installing the battery cell (10) into the accommodating cavity (21); The two receiving members (20) are stacked along the third direction (Z), and the two mounting openings (241) are arranged opposite to each other along the third direction (Z).

8. The battery according to claim 7, characterized in that At least one of the two installation openings (241) is internally connected with an insulating film.

9. The battery according to claim 8, characterized in that At least one of the two installation openings (241) is internally connected with a heat dissipation film; The insulating film and the heat dissipation film are overlapped along the third direction (Z).

10. The battery according to claim 1, characterized in that The battery comprises a conversion member (40), the conversion member (40) extends along the first direction (X), the conversion member (40) is arranged between two adjacent side edges (23) in the second direction (Y), and the two adjacent side edges (23) are rotatably connected through the conversion member (40).

11. An electrical device, characterized in that: The invention comprises the battery according to any one of claims 1 to 10.

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