Battery assembly, battery device and electric equipment

Abstract

The utility model relates to the technical field of batteries, in particular to a battery assembly, a battery device and electric equipment. The battery assembly comprises a plurality of single batteries and a circuit board, the single batteries are arranged in the first direction, at least one single battery is electrically connected with the circuit board through a connecting assembly, and the connecting assembly comprises a first connecting piece and a second connecting piece. One of the first connecting piece and the second connecting piece is arranged on the battery single body and is electrically connected with the battery single body, the other one of the first connecting piece and the second connecting piece is arranged on the circuit board and is electrically connected with the circuit board, and the first connecting piece and the second connecting piece are configured to be capable of relatively moving along a first direction and being electrically connected. According to the battery assembly provided by the invention, the deformed battery monomers can be electrically connected with the circuit board through the connecting assembly, so that connection failure between the battery monomers and the circuit board caused by deformation of the battery monomers is reduced, and the information of the battery monomers is effectively acquired through the circuit board.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a battery assembly, a battery device and an electric equipment. BACKGROUND

[0002] At present, with the popularization of electric vehicles, the use of power batteries is increasing. Among them, the collection of voltage and temperature signals of the battery monomer plays a key role in the normal work of the battery pack.

[0003] The information of the traditional battery monomer, including voltage and temperature, is collected through a wire harness, but the installation of the wire harness is cumbersome and may cause wiring errors or damage due to mutual friction between wires, thereby having safety hazards. Therefore, more and more circuit boards are used to collect the information of the battery monomer.

[0004] In view of the deformation of the battery monomer during use, the position of the connection between the circuit board and the battery monomer changes, and the connection between the circuit board and the battery monomer is broken and fails, resulting in the inability to collect the information of the battery monomer. In view of the defects of the prior art, the purpose of the present application is to provide a battery assembly, a battery device and an electric equipment, which can effectively solve the problem of connection failure between the circuit board and the battery monomer due to the deformation of the battery monomer.

[0005] The first aspect of the present application discloses a battery assembly, which comprises:

[0006] a plurality of battery monomers arranged along a first direction;

[0007] a plurality of battery monomers arranged along a first direction;

[0008] a circuit board, at least one battery monomer is electrically connected to the circuit board through a connection assembly, the connection assembly comprises a first connecting piece and a second connecting piece, one of the first connecting piece and the second connecting piece is arranged on the battery monomer and electrically connected to the battery monomer, the other of the first connecting piece and the second connecting piece is arranged on the circuit board and electrically connected to the circuit board, the first connecting piece and the second connecting piece are configured to be relatively movable along the first direction and electrically connected.

[0009] According to the battery assembly of the present application, when the battery monomer deforms along the first direction, including swelling deformation or extrusion deformation, the relative position of the first connecting piece and the second connecting piece changes with the deformation of the battery monomer. Since the first connecting piece can move along the first direction relative to the second connecting piece, and the first connecting piece after moving can be electrically connected to the second connecting piece, the deformed battery monomer can still be electrically connected to the circuit board through the connection assembly, reducing the connection failure between the battery monomer and the circuit board due to the deformation of the battery monomer, thereby effectively collecting the information of the battery monomer, including the voltage and temperature of the battery monomer, through the circuit board.

[0010] In some embodiments of the application, the first connecting member comprises a first body part, the second connecting member comprises a second body part, one of the first body part and the second body part is arranged on the battery monomer and electrically connected with the battery monomer, the other of the first body part and the second body part is arranged on the circuit board and electrically connected with the circuit board, and the first body part and the second body part are capable of relative movement and electrical connection along the first direction.

[0011] One of the first body part and the second body part is arranged on the battery monomer and is capable of position change along with the deformation of the battery monomer along the first direction, so as to move along the first direction relative to the other, and the first body part and the second body part are capable of relative movement and electrical connection along the first direction, so as to make the first connecting member and the second connecting member always electrically connected during the relative movement, and further electrically connect the circuit board and the battery monomer through the first connecting member and the second connecting member.

[0012] In some embodiments of the application, the first connecting member further comprises a first connecting part arranged on the first body part, and the second connecting member further comprises a second connecting part arranged on the second body part, and the first connecting part and the second connecting part are configured to be capable of relative movement along the first direction and limited fit.

[0013] When the battery monomer is deformed along the first direction, the relative position of the first connecting part and the second connecting part changes, and by configuring the first connecting part and the second connecting part to be capable of relative movement along the first direction, the first connecting part after position change can still be connected with the second connecting part, so as to electrically connect the first body part and the second body part, and further electrically connect the circuit board and the battery monomer through the first connecting member and the second connecting member.

[0014] In some embodiments of the application, the first connecting part comprises a plug-in slot, the second connecting part comprises a plug-in column, the plug-in column is plugged into the plug-in slot, and the plug-in column and the plug-in slot are configured to be capable of relative movement along the first direction.

[0015] The form of the plug-in column and the plug-in slot is convenient to set, and the plug-in slot can limit the movement range of the plug-in column, so that the plug-in column can only move within the range of the plug-in slot and can move along the first direction, reducing the electrical connection failure of the first body part and the second body part due to the disengagement of the plug-in column from the plug-in slot.

[0016] In some embodiments of the application, along the first direction, the size of the plug-in slot is greater than the size of the plug-in column.

[0017] By setting the size of the insertion slot to be larger than the size of the insertion column in the first direction, the insertion column can move in the insertion slot in the first direction, so that when the battery cell deforms in the first direction and the relative positions of the first connecting piece and the second connecting piece change in the first direction, the insertion column can move in the first direction and electrically connect the first body part and the second body part.

[0018] In some embodiments of the present application, in the second direction, the size of the insertion slot is larger than the size of the insertion column, the second direction intersects the first direction, and the first direction and the second direction are perpendicular to the insertion direction of the insertion column.

[0019] By setting the size of the insertion slot to be larger than the size of the insertion column in the second direction, the insertion column can move in the insertion slot in the second direction, so that when the battery cell deforms in the second direction and the relative positions of the first connecting piece and the second connecting piece change in the second direction, the insertion column can move in the second direction and electrically connect the first body part and the second body part.

[0020] In some embodiments of the present application, the insertion slot is a through slot passing through the first body part, and the end of the insertion column away from the second body part passes through the insertion slot and is provided with a limiting head, and part of the first body part is arranged between the limiting head and the second body part.

[0021] In the second direction, the size of the limiting head is larger than the size of the insertion slot, the second direction intersects the first direction, and the first direction and the second direction are perpendicular to the insertion direction of the insertion column, and / or in the first direction, the size of the limiting head is larger than the size of the insertion slot.

[0022] By setting the size of the limiting head to be larger than the size of the insertion slot and arranging part of the first body part between the limiting head and the second body part, the phenomenon of the insertion column separating from the insertion slot in the insertion direction of the insertion column can be reduced, thereby limiting the positions of the first body part and the second body part in the insertion direction of the insertion column, and further keeping the first body part and the second body part in close contact and electrically connected.

[0023] In some embodiments of the present application, the limiting head and the insertion column are a rivet structure in an integral structure.

[0024] The rivet structure is convenient to set. After the relative positions of the first body part and the second body part are fixed, the rivet structure can pass through the insertion slot and be riveted with the second body part, thereby placing the insertion column in the insertion slot and reducing the separation of the insertion column from the insertion slot in the insertion direction by the limiting of the limiting head.

[0025] In some embodiments of the present application, the limiting head and the insertion column are a detachable structure.

[0026] When the first connecting piece and the second connecting piece need to be assembled, the insertion column is inserted into the insertion slot and then assembled with the limiting head, so as to facilitate the assembly of the first connecting piece and the second connecting piece; when the first connecting piece and the second connecting piece need to be disassembled, the limiting head is separated from the insertion column, and then the insertion column is withdrawn along the insertion direction to the outside of the insertion slot, so as to facilitate the disassembly of the first connecting piece and the second connecting piece.

[0027] In some embodiments of the present application, the plurality of battery cells are electrically connected by the conductive sheet and form a battery cell assembly, and the first connecting piece is electrically connected to the battery cell through the conductive sheet.

[0028] The plurality of battery cells are electrically connected by the conductive sheet and form a battery cell assembly, so that the battery cell assembly can be used to supply power to the electrical equipment, and at the same time, the conductive sheet is convenient to connect with the first connecting piece, thereby realizing the electrical connection between the battery cell and the first connecting piece.

[0029] In some embodiments of the present application, the first connecting piece is a metal sheet, and the metal sheet is welded to the conductive sheet.

[0030] By setting the first connecting piece as a metal sheet, the first connecting piece is convenient to be welded to the conductive sheet and electrically connected to the battery cell through the conductive sheet.

[0031] In some embodiments of the present application, the second connecting piece is a conversion terminal, and the conversion terminal is welded to the circuit board.

[0032] By setting the second connecting piece as a conversion terminal, the conversion terminal can be welded to the circuit board and electrically connected to the first connecting piece, so as to collect the information of the battery cell through the circuit board.

[0033] In some embodiments of the present application, the battery assembly includes a plurality of connecting assemblies, the plurality of connecting assemblies are arranged at intervals along the first direction, the plurality of connecting assemblies are one-to-one corresponding to the plurality of battery cells, and any battery cell is electrically connected to the circuit board through the connecting assembly.

[0034] By setting a plurality of connecting assemblies and one-to-one corresponding the plurality of connecting assemblies to the plurality of battery cells, when the battery cell deforms along the first direction, the first connecting piece and the second connecting piece in any connecting assembly can move relatively along the first direction, so that the battery cell is always electrically connected to the circuit board through the connecting assembly, and the information of the plurality of battery cells is collected through the circuit board.

[0035] In some embodiments of the present application, the battery cell includes a first surface with the largest area, and the first direction is perpendicular to the first surface.

[0036] When the battery cell expands internally, the first surface with the largest area is prone to deformation in a direction perpendicular to the surface under the action of internal pressure. By arranging the first surface perpendicular to the first direction, i.e., the first surface expands and deforms in the first direction, since the first connecting member can move relative to the second connecting member in the first direction, and the first connecting member after moving can still be electrically connected with the second connecting member, the deformed battery cell can still be electrically connected with the circuit board through the connecting assembly, reducing the connection failure between the battery cell and the circuit board due to the deformation of the battery cell, so that the information of the battery cell can be effectively collected through the circuit board.

[0037] The second aspect of the present application provides a battery device, the battery device comprising the battery assembly of any one of the above.

[0038] The third aspect of the present application provides a power consumption device, the power consumption device comprising the battery device of the above, the battery device being used to provide electric energy for the power consumption device.

[0039] The above description is only a summary of the technical solutions of the present application. In order to enable one skilled in the art to better understand the technical means of the present application, the contents of the specification can be implemented, and in order to enable the above and other purposes, characteristics and advantages of the present application to be more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0040] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments and are not meant to limit the present application. Moreover, the same reference numerals in the accompanying drawings indicate the same or similar components. In the drawings:

[0041] Figure 1 is a structural schematic diagram of a vehicle provided by an embodiment of the present application;

[0042] Figure 2 is a structural schematic diagram of a battery device provided by an embodiment of the present application;

[0043] Figure 3 is a structural schematic diagram of a battery cell assembly provided by an embodiment of the present application;

[0044] Figure 4 is an exploded structural schematic diagram of a battery cell provided by an embodiment of the present application;

[0045] Figure 5 is a structural schematic diagram of a battery assembly provided by an embodiment of the present application;

[0046] Figure 6 is Figure 5 an exploded structural schematic diagram of the battery assembly in

[0047] Figure 7 is Figure 5 is an enlarged structural schematic view of part A of the battery assembly in

[0048] Figure 8 is Figure 7 is a sectional structural schematic view of part B-B of the battery assembly in

[0049] Figure 9 is a structural schematic view of a battery assembly provided by another embodiment of the present application;

[0050] Figure 10 is an enlarged structural schematic view of part C of the battery assembly in Figure 9

[0051] Figure 11 is a sectional structural schematic view of part D-D of the battery assembly in Figure 10

[0052] Reference signs in the detailed description of the embodiments are as follows:

[0053] 1. vehicle;

[0054] 10. battery device; 11. controller; 12. motor;

[0055] 20. battery cell assembly; 21. battery cell; 211. end cover; 212. housing; 213. electrode assembly; 214. electrode terminal; 215. first surface;

[0056] 30. box; 301. first box; 302. second box;

[0057] 40. battery assembly;

[0058] 50. circuit board; 51. wiring terminal;

[0059] 60. connecting assembly; 61. first connecting piece; 611. first main body part; 612. insertion slot; 62. second connecting piece; 621. second main body part; 622. insertion post; 623. limiting head;

[0060] 70. conductive sheet; 71. first wiring end; 72. second wiring end;

[0061] X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0062] The embodiments of the technical scheme of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical scheme of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application. ​​

[0063] It should be noted that the technical terms or scientific terms used in the embodiments of the present application should be understood as the general meanings understood by the skilled in the art to which the embodiments of the present application belong, unless otherwise specified.

[0064] In the description of the embodiments of the present application, the orientations or positional relationships indicated by the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0065] In addition, the technical terms "first", "second", and the like are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0066] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connecting", "connecting", "fixing", and the like should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0067] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "over", and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under", and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0068] At present, from the development of market situation, the application of power battery is more and more widely. Power battery is not only applied to energy storage power supply system of water power, fire power, wind power and solar power station, but also widely applied to electric vehicles such as electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, military equipment and aerospace and other fields. Lithium ion battery has been widely used in mobile and portable electric appliances due to its high energy density, high average open circuit voltage and long cycle life.

[0069] With the popularization of electric vehicles, the use of power battery is more and more large. Among them, the collection of voltage and temperature signal of battery monomer plays a key role in the normal work of battery pack.

[0070] The traditional information of battery monomer, including voltage and temperature, is collected through wire harness, but the installation of wire harness is complicated, and wiring error or mutual friction and damage between wires may occur, which may have safety hazards. Therefore, more and more circuit boards (flexible printed circuit boards) are used to collect the information of battery monomer.

[0071] In view of the deformation of battery monomer in use, the position of the connection between the circuit board and the battery monomer changes, and the connection between the circuit board and the battery monomer is broken and fails, which leads to the failure to collect the information of the battery monomer.

[0072] In order to solve the problem of connection failure between circuit board and battery monomer caused by deformation of battery monomer, the application provides a battery assembly, a battery device comprising the battery assembly, and an electric equipment comprising the battery device. According to the battery assembly, the battery device and the electric equipment of the application, after the deformation of the battery monomer, the deformed battery monomer can still be electrically connected with the circuit board through the connecting assembly, reducing the connection failure between the circuit board and the battery monomer caused by the deformation of the battery monomer, so as to effectively collect the information of the battery monomer, including the voltage and temperature of the battery monomer, through the circuit board.

[0073] The battery device (Battery Apparatus) mentioned in the embodiments of the application can include one or more battery monomer assemblies for providing voltage and capacity. The battery monomer assembly (Battery Cell Assembly) can include a plurality of battery monomers connected in series, parallel or mixed connection through bus components.

[0074] In some embodiments, the battery monomer assembly (Battery Cell Assembly) is usually formed by arranging a plurality of battery monomers; as an example, the battery monomer assembly can be a battery module, which is formed by arranging and fixing a plurality of battery monomers into an independent module. As an example, the battery module can be formed by binding a plurality of battery monomers with a cable tie.

[0075] In some embodiments, the battery device can be a battery pack, which includes a box and one or more battery cell assemblies accommodated in the box.

[0076] As an example, the battery cell assembly can be a battery module, which can be accommodated in the box by fixing the battery module in the box.

[0077] As an example, the battery cell assembly can also be accommodated in the box by fixing a plurality of battery cells directly in the box.

[0078] As an example, the box can include a first box and a second box. The first box and the second box are buckled so that an enclosed space is formed inside the box to accommodate the battery cell assembly. Here, the enclosed means covered or closed, which can be sealed or unsealed. The first box can be a top cover or a bottom plate.

[0079] As an example, the box can include a top cover, a frame and a bottom plate. The top cover and the bottom plate are connected with the frame respectively, so that an enclosed space is formed inside the box to accommodate the battery cell assembly.

[0080] As an example, the box can be part of the chassis structure of a vehicle. For example, the top cover of the box can be at least part of the floor of the vehicle, or the frame of the box can be at least part of the cross beam and the longitudinal beam of the vehicle.

[0081] In some embodiments, the battery device refers to an energy storage device, which includes a box, at least one side of which is provided with a door. The energy storage device includes an energy storage container, an energy storage cabinet, etc.

[0082] The technical solutions described in the embodiments of the present application are applicable to various electric devices using battery cells and battery devices, such as mobile phones, portable devices, notebook computers, electric vehicles, electric toys, electric tools, vehicles, ships and spacecraft, etc. For example, the spacecraft includes an airplane, a rocket, a space shuttle and a spacecraft, etc.

[0083] Figure 1 The structural schematic diagram of the vehicle 1 is provided for some embodiments of the present application. As shown in FIG. 1, the vehicle 1 includes a chassis structure 10 and a body structure 20. Figure 1As shown, the vehicle 1 can be a fuel vehicle, a gas vehicle, or a new energy vehicle, which can be a pure electric vehicle, a hybrid vehicle, or a range extended vehicle, etc. The vehicle 1 is internally provided with a battery device 10, which can be arranged at the bottom or the head or tail of the vehicle 1. The battery device 10 can be used for power supply of the vehicle 1, for example, the battery device 10 can be used as the operating power source of the vehicle 1. The vehicle 1 can further include a controller 11 and a motor 12, the controller 11 is used to control the battery device 10 to supply power to the motor 12, for example, for the power demand of the vehicle 1 during starting, navigation, and driving.

[0084] In some embodiments of the present application, the battery device 10 can not only be used as the operating power source of the vehicle 1, but also be used as the driving power source of the vehicle 1, instead of or partially instead of fuel or natural gas to provide driving power for the vehicle 1.

[0085] Figure 2 A structural schematic diagram of the battery device 10 according to an embodiment of the present application. Figure 3 A structural schematic diagram of the battery cell assembly 20 according to an embodiment of the present application. As shown in Figure 2 and Figure 3 As shown, in order to meet different power demand, the battery device 10 can include a plurality of battery cells 21, which are the smallest units that make up the battery device 10. The plurality of battery cells 21 can be connected in series and / or in parallel via electrode terminals to be applied to various application occasions. Among them, the plurality of battery cells 21 can be connected in series or in parallel or in a mixed manner, and the mixed manner refers to a mixture of series and parallel connection.

[0086] As shown in Figure 2 and Figure 3 As shown, the battery device 10 can include a plurality of battery cell assemblies 20 and a box 30, and the plurality of battery cell assemblies 20 are accommodated in the interior of the box 30. The box 30 is used to accommodate the battery cells 21 or the battery cell assemblies 20, so as to reduce the influence of liquid or other foreign matters on the charging or discharging of the battery cells 21. The box 30 can be a simple solid structure such as a cuboid or a cylinder or a sphere, or a complex solid structure composed of a cuboid or a cylinder or a sphere. The material of the box 30 can be an alloy material such as aluminum alloy or iron alloy, or a high polymer material such as polycarbonate or polyisocyanurate foam plastic, or a composite material such as glass fiber and epoxy resin.

[0087] In some embodiments, the box 30 can include a first box 301 and a second box 302, the first box 301 and the second box 302 are mutually coverable, and the first box 301 and the second box 302 jointly define a space for accommodating the battery monomer 21. The second box 302 can be a hollow structure with one end open, and the first box 301 can be a plate-shaped structure, which is coverable on the open side of the second box 302 to jointly define the space for accommodating the battery monomer 21 with the second box 302. Alternatively, the first box 301 and the second box 302 can both be hollow structures with one side open, and the open side of the first box 301 is coverable on the open side of the second box 302.

[0088] The battery monomer assembly 20 can include a plurality of battery monomers 21, which can be connected in series, in parallel, or in a mixed manner to form the battery monomer assembly 20, and the plurality of battery monomer assemblies 20 can be connected in series, in parallel, or in a mixed manner to form the battery device 10. The battery monomer 21 can be in the shape of a cylinder, a flat body, a cuboid, or other shapes, which are not limited in the embodiments of the present application. The battery monomer 21 is generally divided into three types according to the packaging method: cylindrical battery monomers, cuboid battery monomers, and soft-pack battery monomers, which are not limited in the embodiments of the present application. However, for the sake of simplicity, the following embodiments will be described by taking the lithium-ion battery monomer 21 in the shape of a cuboid as an example.

[0089] Figure 4 The exploded structural view of the battery monomer 21 is provided for some embodiments of the present application. The battery monomer 21 refers to the smallest unit that constitutes the battery device 10. As shown in FIG. 2, the battery monomer 21 includes an end cover 211, a shell 212, and an electrode assembly 213. Figure 4

[0090] The end cover 211 refers to a component that covers the opening of the shell 212 to isolate the internal environment of the battery monomer 21 from the external environment. Without limitation, the shape of the end cover 211 can be adapted to the shape of the shell 212 to fit the shell 212. Alternatively, the end cover 211 can be made of a material with certain hardness and strength (such as aluminum alloy), so that the end cover 211 is not easy to deform when subjected to extrusion and collision, so that the battery monomer 21 can have higher structural strength, and the safety performance can also be improved. The end cover 211 can be provided with functional components such as electrode terminals 214. The electrode terminals 214 can be used for electrical connection with the electrode assembly 213 for output or input of the electrical energy of the battery monomer 21. In some embodiments, the end cover 211 can also be provided with a pressure relief mechanism for relieving the internal pressure of the battery monomer 21 when the internal pressure or temperature reaches a threshold value. In some embodiments, an insulating piece can also be provided on the inner side of the end cover 211, which can be used to isolate the electrical connection components in the shell 212 from the end cover 211 to reduce the risk of short circuit. Exemplarily, the insulating piece can be plastic, rubber, etc.​

[0091] The housing 212 is a component that cooperates with the end cap 211 to form the internal environment of the battery cell 21. This internal environment can be used to accommodate the electrode assembly 213, electrolyte (not shown), and other components. The housing 212 and the end cap 211 can be separate components. An opening can be provided in the housing 212, and the end cap 211 is placed over the opening to form the internal environment of the battery cell 21. Alternatively, the end cap 211 and the housing 212 can be integrated. Specifically, the end cap 211 and the housing 212 can form a common connection surface before other components are inserted into the housing. When the interior of the housing 212 needs to be enclosed, the end cap 211 is placed over the housing 212. The housing 212 can be of various shapes and sizes, such as a rectangular parallelepiped, a cylinder, or a hexagonal prism. Specifically, the shape of the housing 212 can be determined based on the specific shape and size of the electrode assembly 213. The housing 212 can be made of a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0092] The electrode assembly 213 is a component in the battery cell 21 where electrochemical reactions occur. One or more electrode assemblies 213 may be contained in the housing 212. The electrode assembly 213 is mainly formed by winding or stacking positive and negative electrode sheets, and a separator is usually provided between the positive and negative electrode sheets. The parts of the positive and negative electrode sheets with active materials constitute the main body of the electrode assembly 213, and the parts of the positive and negative electrode sheets without active materials each constitute a tab (not shown in the figure). The positive tab and the negative tab may be located together at one end of the main body or respectively at both ends of the main body. During the charge and discharge process of the battery, the positive active material and the negative active material react with the electrolyte, and the tabs connect the electrode terminals 214 to form a current loop.

[0093] Combine Figures 5 to 7 As shown, in some embodiments of the present application, the battery assembly 40 includes a plurality of battery cells 21 and a circuit board 50, the plurality of battery cells 21 are arranged along a first direction X, at least one battery cell 21 is electrically connected to the circuit board 50 through a connecting assembly 60, the connecting assembly 60 includes a first connecting member 61 and a second connecting member 62, one of the first connecting member 61 and the second connecting member 62 is provided on the battery cell 21 and electrically connected to the battery cell 21, the other of the first connecting member 61 and the second connecting member 62 is provided on the circuit board 50 and electrically connected to the circuit board 50, and the first connecting member 61 and the second connecting member 62 are configured to be able to move relative to each other along the first direction X and be electrically connected.

[0094] Specifically, the plurality of battery monomers 21 are arranged in sequence along the first direction X, and one or more of the plurality of battery monomers 21 are electrically connected to the circuit board through the connecting assembly 60, so as to collect information of the battery monomers 21 through the circuit board, including voltage and temperature of the battery monomers 21. The plurality of battery monomers 21 can be connected in series, in parallel or mixed, or the plurality of battery monomers 21 can be arranged independently. Wherein, the circuit board 50 is provided with a wiring terminal 51 at one end along the first direction X, and the wiring terminal 51 is used to output the information of the battery monomers 21 collected by the circuit board 50. Optionally, the circuit board 50 in the present application can be a flexible circuit board with deformation ability, such as a flexible printed circuit board or a flexible die-cut circuit board, which has a certain deformation ability, so as to adapt to the deformation of the battery monomers 21. In some embodiments of the present application, the circuit board 50 can also be a rigid circuit board, such as a printed circuit board.

[0095] Wherein, the battery monomer 21 includes a length direction, a width direction and a height direction, wherein the battery monomer 21 is provided with an electrode terminal 214 at one end of the height direction, the length direction of the battery monomer 21 is larger than the width direction, and the circuit board 50 can be arranged on one side of the battery monomer 21 provided with the electrode terminal 214, so as to be electrically connected with the electrode terminal 214. For the convenience of description, the present application only takes the first direction X consistent with the width direction of the battery monomer 21, the second direction Y consistent with the length direction of the battery monomer 21, and the third direction Z consistent with the height direction of the battery monomer 21 as an example for description.

[0096] The connecting assembly 60 includes a first connecting piece 61 and a second connecting piece 62, the first connecting piece 61 can be arranged on the battery monomer 21 and electrically connected with the battery monomer 21, the second connecting piece 62 can be arranged on the circuit board 50 and electrically connected with the circuit board 50, or the first connecting piece 61 can be arranged on the circuit board 50 and electrically connected with the circuit board 50, and the second connecting piece 62 can be arranged on the battery monomer 21 and electrically connected with the battery monomer 21. The first connecting piece 61 and the second connecting piece 62 can move relative to the arrangement direction of the plurality of battery monomers 21, and are always electrically connected during and after the movement.

[0097] For the convenience of description, the present application only takes the first connecting piece 61 arranged on the battery monomer 21 and the second connecting piece 62 arranged on the circuit board 50 as an example for description.

[0098] When the first connecting member 61 is arranged on the battery monomer 21, when the battery monomer 21 deforms, including when the battery monomer 21 deforms due to its own expansion or when the battery monomer 21 is extruded due to external impact, the position of the first connecting member 61 arranged on the battery monomer 21 changes, while the position of the second connecting member 62 arranged on the circuit board 50 does not change, so the relative position of the first connecting member 61 and the second connecting member 62 changes. Since the first connecting member 61 can move relative to the second connecting member 62 in the first direction X, and the first connecting member 61 after moving can be electrically connected with the second connecting member 62, the deformed battery monomer 21 can still be electrically connected with the circuit board 50 through the connecting assembly 60, reducing the connection failure between the battery monomer 21 and the circuit board 50 caused by the deformation of the battery monomer 21, so that the information of the battery monomer 21, including the voltage and temperature of the battery monomer 21, can be effectively collected through the circuit board 50.

[0099] In combination Figures 5 to 7 As shown in the drawings, in some embodiments of the present application, the first connecting member 61 includes a first body part 611, and the second connecting member 62 includes a second body part 621, one of the first body part 611 and the second body part 621 is arranged on the battery monomer 21 and electrically connected with the battery monomer 21, the other of the first body part 611 and the second body part 621 is arranged on the circuit board 50 and electrically connected with the circuit board 50, and the first body part 611 and the second body part 621 can move relative to each other in the first direction X and be electrically connected.

[0100] Specifically, the first body part 611 and the second body part 621 are conductive members respectively, the first body part 611 is arranged on the battery monomer 21 and electrically connected with the electrode terminal 214 of the battery monomer 21, and can change position with the deformation of the battery monomer 21. The second body part 621 is arranged on the circuit board 50 and electrically connected with the circuit board of the circuit board 50. Optionally, the first body part 611 and the second body part 621 are plate-shaped structures respectively, and the plate surface of the first body part 611 and the plate surface of the second body part 621 are arranged relative to each other in the third direction Z and are attached, so as to realize the electrical connection of the first body part 611 and the second body part 621.

[0101] When the first body part 611 changes position with the deformation of the battery monomer 21 in the first direction X, the first body part 611 moves relative to the second body part 621 in the first direction X, since the first body part 611 and the second body part 621 are arranged to be able to move relative to each other in the first direction X and be electrically connected, so that the first connecting member 61 and the second connecting member 62 are always electrically connected during the relative movement, and then the circuit board 50 and the battery monomer 21 are electrically connected through the first connecting member 61 and the second connecting member 62.

[0102] In combination Figures 5 to 7As shown, in some embodiments of the present application, the first connecting member 61 also includes a first connecting portion provided on the first main body portion 611, and the second connecting member 62 also includes a second connecting portion provided on the second main body portion 621, and the first connecting portion and the second connecting portion are configured to be able to move relative to each other along the first direction X and to be limitedly matched.

[0103] Specifically, the first connecting portion and the second connecting portion cooperate to limit the relative position of the first main portion 611 and the second main portion 621, thereby maintaining electrical connection between the first main portion 611 and the second main portion 621 during relative movement of the first connecting member 61 and the second connecting member 62. Since the first connecting member 61 and the second connecting member 62 are electrically connected via the first main portion 611 and the second main portion 621, the first connecting portion and the second connecting portion serve only as position limits. Therefore, the first connecting portion and the second connecting portion can be configured as either a conductive structure or a non-conductive structure.

[0104] When the battery cell 21 is deformed along the first direction X, the first main body 611 and the first connecting portion can change position following the deformation of the battery cell 21. By configuring the first connecting portion and the second connecting portion to be able to move relative to each other along the first direction X, the first connecting portion can still be connected to the second connecting portion after the position change, thereby electrically connecting the first main body 611 and the second main body 621, and then electrically connecting the circuit board 50 and the battery cell 21 through the first connecting member 61 and the second connecting member 62.

[0105] Combine Figures 5 to 8 As shown, in some embodiments of the present application, the first connecting portion includes a plug-in slot 612, and the second connecting portion includes a plug-in column 622, the plug-in column 622 is plugged into the plug-in slot 612, and the plug-in column 622 and the plug-in slot 612 are configured to be able to move relative to each other along the first direction X.

[0106] Specifically, the second main body 621 is provided with a plug-in column 622 protruding in the direction of the first main body 611, and the first main body 611 is provided with a plug-in slot 612. The plug-in column 622 is plugged into the plug-in slot 612, thereby limiting the relative position of the plug-in column 622 and the plug-in slot 612 in a plane perpendicular to the plug-in direction of the plug-in column 622, so that the plug-in column 622 is always in the plug-in slot 612, thereby ensuring that the first main body 611 is always in contact with and electrically connected to the second main body 621. The plug-in slot 612 can be a through slot or a blind slot. The through slot is along the plug-in direction of the plug-in column 622 and the plug-in slot 612 passes through the first main body 611. The blind slot is along the plug-in direction of the plug-in column 622 and the plug-in slot 612 does not pass through the first main body 611. The movement of the plug-in column 622 relative to the plug-in slot 612 at least includes movement along the first direction X.

[0107] In some embodiments of the present application, one of the first connecting part and the second connecting part is provided with a sliding groove (not shown in the figure), and the other is provided with a protrusion (not shown in the figure), the sliding groove and the protrusion respectively extend along the first direction X, and the protrusion is inserted into the sliding groove and can slide along the first direction X.

[0108] The form of the insertion column 622 and the insertion groove 612 is convenient to set, and the insertion groove 612 can limit the movement range of the insertion column 622, so that the insertion column 622 can only move within the range of the insertion groove 612 and can move along the first direction X, reducing the failure of the electrical connection between the first main body part 611 and the second main body part 621 due to the disengagement of the insertion column 622 from the insertion groove 612.

[0109] In combination Figures 5 to 8 As shown in some embodiments of the present application, along the first direction X, the size of the insertion groove 612 is greater than the size of the insertion column 622.

[0110] By setting the size of the insertion groove 612 to be greater than the size of the insertion column 622 along the first direction X, the insertion column 622 can move within the insertion groove 612 along the first direction X, so that when the battery monomer 21 deforms along the first direction X and the relative position of the first connecting part 61 and the second connecting part 62 along the first direction X changes, the insertion column 622 can move along the first direction X and electrically connect the first main body part 611 and the second main body part 621.

[0111] In combination Figures 5 to 8 As shown in some embodiments of the present application, along the second direction Y, the size of the insertion groove 612 is greater than the size of the insertion column 622, the second direction Y intersects the first direction X, and the first direction X and the second direction Y are respectively perpendicular to the insertion direction of the insertion column 622.

[0112] Specifically, in addition to deforming along the first direction X, the battery monomer 21 can also deform along the second direction Y. The second direction Y intersects the first direction Z, and the first direction Z and the second direction Y are respectively perpendicular to the insertion direction of the insertion column 622. Since the second connecting part 62 can change position along with the deformation of the battery monomer 21 along the second direction Y, causing the first connecting part 61 and the second connecting part 62 to move relatively along the second direction Y, the size of the insertion groove 612 is set to be greater than the size of the insertion column 622 along the second direction Y, so that the first connecting part 61 and the second connecting part 62 can move relatively along the second direction Y and be electrically connected.

[0113] By setting the size of the insertion slot 612 to be larger than the size of the insertion post 622 along the second direction Y, the insertion post 622 can be moved within the insertion slot 612 along the second direction Y, so that when the battery cell 21 deforms along the second direction Y and the relative position of the first connecting member 61 and the second connecting member 62 along the second direction Y changes, the insertion post 622 can move along the second direction Y and electrically connect the first main body part 611 and the second main body part 621.

[0114] In combination Figures 5 to 8 As shown in some embodiments of the present application, the insertion slot 612 is a through slot through the first main body part 611, the insertion post 622 passes through the insertion slot 612 at an end away from the second main body part 621 and is provided with a limiting head 623, and part of the first main body part 611 is arranged between the limiting head 623 and the second main body part 621; wherein along the second direction Y, the size of the limiting head 623 is larger than the size of the insertion slot 612, the second direction Y intersects the first direction X, and the first direction X and the second direction Y are respectively perpendicular to the insertion direction of the insertion post 622, and / or along the first direction X, the size of the limiting head 623 is larger than the size of the insertion slot 612.

[0115] Specifically, the insertion slot 612 is a through slot through the first main body part 611 along the insertion direction of the insertion post 622, one end of the insertion post 622 is connected to the second main body part 621, and the other end of the insertion post 622 passes through the insertion slot 612 and is arranged on the side of the first main body part 611 away from the second main body part 621. The limiting head 623 is arranged on the side of the first main body part 611 away from the second main body part 621 and is connected to the insertion post 622, so that part of the first main body part 611 is arranged between the limiting head 623 and the second main body part 621.

[0116] The insertion slot 612 can only limit the insertion post 622 in a plane perpendicular to the insertion direction of the insertion post 622, and when the battery cell 21 deforms along the insertion direction of the insertion post 622, the insertion post 622 may escape from the insertion slot 612 along the insertion direction, thereby causing the connection between the first connecting member 61 and the second connecting member 62 to fail, and further failing to be electrically connected. Therefore, the limiting head 623 needs to be provided and limit the insertion post 622 and the insertion slot 612 along the insertion direction of the insertion post 622. At the same time, in order to facilitate the movement of the insertion post 622 within the insertion slot 612, the distance between the limiting head 623 and the second main body part 621 along the insertion direction of the insertion post 622 is slightly larger than the size of the first main body part 611.

[0117] Optionally, the size of the limiting head 623 can be set to be larger than the size of the insertion slot 612 along the first direction X, and / or the size of the limiting head 623 can be set to be larger than the size of the insertion slot 612 along the second direction Y.

[0118] Optionally, to reduce the end of the limiting head 623 from scratching other components outside the battery assembly 40, the end of the limiting head 623 can be provided with a partial spherical surface.

[0119] By setting the size of the limiting head 623 to be larger than the size of the insertion slot 612, and by arranging the partial first body part 611 between the limiting head 623 and the second body part 621, the phenomenon of the insertion post 622 coming off the insertion slot 612 along the insertion direction of the insertion post 622 can be reduced, thereby limiting the position of the first body part 611 and the second body part 621 along the insertion direction of the insertion post 622, and further making the first body part 611 and the second body part 621 remain in close contact and electrically connected.

[0120] In combination Figures 5 to 8 As shown in some embodiments of the present application, the limiting head 623 and the insertion post 622 are in a rivet structure.

[0121] Specifically, since the limiting head 623 can limit the first body part 611 along the insertion direction of the insertion post 622, the insertion post 622 is connected to the second body part 621 after the first body part 611 and the second body part 621 are positioned. Optionally, when the relative position of the first body part 611 and the second body part 621 is fixed, the rivet structure can pass through the insertion slot 612 and be riveted to the second body part 621, thereby placing the insertion post 622 in the insertion slot 612, and reducing the insertion post 622 from coming off the insertion slot 612 along the insertion direction by the limiting of the limiting head 623. The rivet structure is convenient to arrange and reliable in connection.

[0122] In combination Figures 5 to 8 As shown in some embodiments of the present application, the limiting head 623 and the insertion post 622 are in a detachable structure.

[0123] Specifically, the end of the insertion post 622 away from the second body part 621 is detachable from the limiting head 623, including screw connection, clamping, or connection through a connecting piece, so that the insertion post 622 can be connected to the limiting head 623 after passing through the insertion slot 612. Optionally, the outer periphery of the end of the insertion post 622 away from the second body part 621 is provided with external threads, and the end of the limiting head 623 facing the insertion post 622 is provided with a bolt hole, which is sleeved on the end of the insertion post 622 and threadedly connected with the external threads.

[0124] When the first connecting piece 61 and the second connecting piece 62 need to be assembled, the insertion column 622 is inserted into the insertion slot 612 and then assembled with the limiting head 623, so as to facilitate the assembly of the first connecting piece 61 and the second connecting piece 62; when the first connecting piece 61 and the second connecting piece 62 need to be disassembled, the limiting head 623 is separated from the insertion column 622, and then the insertion column 622 is withdrawn along the insertion direction to the outside of the insertion slot 612, so as to facilitate the disassembly of the first connecting piece 61 and the second connecting piece 62.

[0125] In combination Figures 5 to 8 As shown in the drawings, in some embodiments of the present application, the plurality of battery monomers 21 are electrically connected by the conductive sheet 70 and form a battery monomer assembly 20, and the first connecting piece 61 is electrically connected with the battery monomer 21 through the conductive sheet 70.

[0126] Specifically, the conductive sheet 70 is used to electrically connect at least two battery monomers 21. When the number of battery monomers 21 is greater than two, the number of conductive sheets 70 can be multiple, and the plurality of battery monomers 21 are connected into the battery monomer assembly 20 by the plurality of conductive sheets 70. Among them, the two conductive sheets 70 located at both ends along the first direction X are respectively provided with a first connecting terminal 71 and a second connecting terminal 72, one of the first connecting terminal 71 and the second connecting terminal 72 is used to connect the positive electrode of the battery monomer 21 and is used as the positive output terminal of the battery monomer assembly 20, and the other of the first connecting terminal 71 and the second connecting terminal 72 is used to connect the negative electrode of the battery monomer 21 and is used as the negative output terminal of the battery monomer assembly 20. The conductive sheet 70 is arranged on the battery monomer 21 and is electrically connected with the electrode terminal 214, and the first connecting piece 61 can be arranged on the conductive sheet 70 and is electrically connected with the conductive sheet 70, so that the first connecting piece 61 can be arranged on the battery monomer 21 through the conductive sheet 70 and is electrically connected with the electrode terminal 214 of the battery monomer 21. Optionally, the conductive sheet 70 can be an aluminum bar.

[0127] The plurality of battery monomers 21 are electrically connected by the conductive sheet 70 and form the battery monomer assembly 20, so that the battery monomer assembly 20 can be used to supply power to the electric device, and meanwhile, the conductive sheet 70 is convenient to connect with the first connecting piece 61, so as to realize the electrical connection between the battery monomer 21 and the first connecting piece 61.

[0128] In combination Figures 5 to 8 As shown in the drawings, in some embodiments of the present application, the first connecting piece 61 is a metal sheet, and the metal sheet is welded to the conductive sheet.

[0129] Specifically, the metal sheet is convenient to manufacture and to be welded with the conductive sheet 70. Alternatively, the first main body part 611 of the first connecting member 61 is the metal sheet, and the first main body part 611 is welded with the conductive sheet 70. The metal sheet can be an aluminum sheet, an aluminum alloy sheet, a copper sheet or a copper alloy sheet.

[0130] By setting the first connecting member 61 as the metal sheet, the first connecting member 61 is convenient to be welded with the conductive sheet 70 and to be electrically connected with the battery monomer 21 through the conductive sheet 70.

[0131] In combination Figures 5 to 8 As shown in some embodiments of the present application, the second connecting member 62 is an adapter terminal, and the adapter terminal is welded with the circuit board 50.

[0132] Specifically, the adapter terminal is welded with the circuit board of the circuit board 50. The adapter terminal is in a sheet structure, so as to be convenient to be welded with the circuit board 50 and to be led out and connected with the first connecting member 61. Alternatively, the second main body part 621 of the second connecting member 62 is the adapter terminal, and the adapter terminal can be an aluminum sheet, an aluminum alloy sheet, a copper sheet or a copper alloy sheet.

[0133] By setting the second connecting member 62 as the adapter terminal, the adapter terminal can be welded with the circuit board 50 and electrically connected with the first connecting member 61, so as to collect the information of the battery monomer 21 through the circuit board 50.

[0134] In combination Figures 5 to 8 As shown in some embodiments of the present application, the battery assembly 40 includes a plurality of connecting assemblies 60, the plurality of connecting assemblies 60 are arranged at intervals along the first direction X, the plurality of connecting assemblies 60 are arranged one by one with the plurality of battery monomers 21, and any battery monomer 21 is electrically connected with the circuit board 50 through the connecting assembly 60.

[0135] Specifically, the number of the connecting assemblies 60 is consistent with the number of the battery monomers 21, the plurality of connecting assemblies 60 are arranged at intervals along the first direction X, and any battery monomer 21 is electrically connected with the circuit board 50 through one connecting assembly 60. Since the battery monomer 21 has two electrode terminals 214, and the two electrode terminals 214 are arranged at intervals along the second direction Y. Therefore, the plurality of connecting assemblies 60 can be arranged on both sides of the circuit board 50 along the second direction Y, and arranged at intervals along the first direction X, so that the electrode terminals 214 on different sides of the adjacent two battery monomers 21 are electrically connected with the circuit board 50 through the connecting assemblies 60.

[0136] By providing multiple connecting assemblies 60 and arranging the multiple connecting assemblies 60 in one-to-one correspondence with the multiple battery cells 21, when the battery cell 21 is deformed along the first direction X, the first connecting member 61 and the second connecting member 62 in any connecting assembly 60 can move relative to each other along the first direction X, so that the battery cell 21 is always electrically connected to the circuit board 50 through the connecting assembly 60, and information of the multiple battery cells 21 is collected through the circuit board 50.

[0137] Combine Figures 9 to 11 As shown, in some embodiments of the present application, the battery cell 21 includes a first surface 215 having the largest area, and the first direction X is perpendicular to the first surface 215 .

[0138] Specifically, the length and height of the battery cell 21 are respectively greater than the width of the battery cell 21 , and the first surface 215 has a length and a height. The first direction X coincides with the width of the battery cell 21 and is perpendicular to the length and height of the battery cell 21 , such that the first direction X is perpendicular to the first surface 215 .

[0139] When the interior of the battery cell 21 expands, the first surface 215 with the largest area is easily deformed in a direction perpendicular to its own surface under the action of internal pressure. By arranging the first surface 215 perpendicular to the first direction X, that is, the first surface 215 expands and deforms along the first direction X, since the first connector 61 can move relative to the second connector 62 along the first direction X, and the first connector 61 can still be electrically connected to the second connector 62 after movement, the deformed battery cell 21 can still be electrically connected to the circuit board 50 through the connecting assembly 60, thereby reducing the connection failure with the circuit board 50 caused by the deformation of the battery cell 21, thereby effectively collecting information about the battery cell 21 through the circuit board 50.

[0140] Combine Figures 6 to 8 As shown, in some embodiments of the present application, the first connector 61 can be provided on the circuit board 50 and electrically connected to the circuit board 50, and the second connector 62 can be provided on the battery cell 21 and electrically connected to the battery cell 21. Optionally, the second connector 62 and the first connector 61 can be provided in the same manner. Figures 2 to 5The setting method of the embodiment in the embodiment is consistent. Among them, the first connecting member 61 includes a first main body 611 and a plug-in slot 612. The first main body 611 is provided on the battery cell 21 through the conductive sheet 70 and is electrically connected to the battery cell 21 through the conductive sheet 70. The second connecting member 62 includes a second main body 621, a plug-in column 622 and a limit head 623. The second main body 621 is provided on the circuit board 50 and is electrically connected to the circuit board 50. The first main body 611 is provided on the side of the second main body 621 away from the circuit board 50 and is in contact with the second main body 621. The second main body 621 is provided with a plug-in column 622 protruding toward one side of the first main body 611. The plug-in column 622 is plugged into the plug-in slot 612, and a limit head 623 is provided at the end of the plug-in column 622 away from the second main body 621.

[0141] Combine Figure 1 As shown, the second aspect of the present application provides a battery device 10, which includes a battery assembly 40 according to any of the above embodiments.

[0142] Since the battery device 10 in the present application has the same technical features as the battery assembly 40 in any of the above embodiments and can achieve the same technical effects, it will not be described in detail here.

[0143] like Figure 1 As shown, the third aspect of the present application proposes an electrical device, which includes the battery device 10 of the above embodiment, and the battery device 10 is used to provide electrical energy for the electrical device.

[0144] Since the electrical equipment in the present application has the same technical features as the battery device 10 in any of the above embodiments and can achieve the same technical effects, it will not be described in detail here.

[0145] like Figure 1 As shown, in some embodiments of the present application, the electrical device may be a vehicle 1, which includes a battery device 10 according to any of the above embodiments. The battery device 10 is used to provide electrical energy to the vehicle 1 and to drive the vehicle 1 to move.

[0146] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below.

[0147] like Figures 2 to 7 As shown, the present application proposes a vehicle, which includes a battery device 10 for providing electrical energy to the vehicle 1 and for driving the vehicle 1 to move.

[0148] Combine Figures 5 to 8As shown, the battery device 10 comprises a battery assembly 40, the battery assembly 40 comprises a plurality of battery cells 21 arranged along a first direction X and a circuit board 50, at least one battery cell 21 is electrically connected with the circuit board 50 through a connecting assembly 60, the connecting assembly 60 comprises a first connecting piece 61 and a second connecting piece 62, the first connecting piece 61 is arranged on the battery cell 21 and electrically connected with the battery cell 21, the second connecting piece 62 is arranged on the circuit board 50 and electrically connected with the circuit board 50, the first connecting piece 61 and the second connecting piece 62 are configured to be relatively movable along the first direction X and electrically connected. Wherein, the battery cell 21 comprises a first surface 215 with the largest area, and the first direction X is perpendicular to the first surface 215.

[0149] In combination Figures 5 to 8 As shown, the first connecting piece 61 comprises a first body part 611, the second connecting piece 62 comprises a second body part 621, the first body part 611 is arranged on the battery cell 21 and electrically connected with the battery cell 21, the second body part 621 is arranged on the circuit board 50 and electrically connected with the circuit board 50, the first body part 611 and the second body part 621 are relatively movable along the first direction X and electrically connected. The first connecting piece 61 further comprises a first connecting part arranged on the first body part 611, the second connecting piece 62 further comprises a second connecting part arranged on the second body part 621, the first connecting part and the second connecting part are configured to be relatively movable along the first direction X and limitedly matched.

[0150] In combination Figures 5 to 8 As shown, the first connecting part comprises a plug-in slot 612, the second connecting part comprises a plug-in column 622, the plug-in column 622 is plugged into the plug-in slot 612, and the plug-in column 622 and the plug-in slot 612 are configured to be relatively movable along the first direction X. Along the first direction X, the size of the plug-in slot 612 is larger than the size of the plug-in column 622. Along the second direction Y, the size of the plug-in slot 612 is larger than the size of the plug-in column 622, the second direction Y intersects with the first direction X, and the first direction X and the second direction Y are respectively perpendicular to the plug-in direction of the plug-in column 622. Wherein, the plug-in slot 612 is a through slot penetrating through the first body part 611, one end of the plug-in column 622 away from the second body part 621 penetrates through the plug-in slot 612 and is provided with a limiting head 623, part of the first body part 611 is arranged between the limiting head 623 and the second body part 621, and along the second direction Y, the size of the limiting head 623 is larger than the size of the plug-in slot 612. Optionally, the limiting head 623 and the plug-in column 622 are a rivet structure in an integral structure.

[0151] In combination ​As shown, the plurality of battery cells 21 are electrically connected by the conductive sheet 70 and form the battery cell assembly 20, and the first connecting member 61 is arranged on the battery cell 21 and electrically connected with the battery cell 21 by the conductive sheet 70. The first connecting member 61 is a metal sheet, which is welded to the conductive sheet 70. The second connecting member 62 is a relay terminal, which is welded to the circuit board 50. The battery assembly 40 comprises a plurality of connecting assemblies 60, which are arranged in the first direction X at intervals, and the plurality of connecting assemblies 60 are arranged one by one with the plurality of battery cells 21, and any battery cell 21 is electrically connected with the circuit board 50 through the connecting assembly 60.

[0152] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application. Especially, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery assembly, characterized in that: include: A plurality of battery cells, wherein the plurality of battery cells are arranged along a first direction; A circuit board, at least one of the battery cells is electrically connected to the circuit board through a connecting component, the connecting component includes a first connector and a second connector, one of the first connector and the second connector is provided on the battery cell and electrically connected to the battery cell, the other of the first connector and the second connector is provided on the circuit board and electrically connected to the circuit board, and the first connector and the second connector are configured to be able to move relative to each other along the first direction and be electrically connected.

2. The battery assembly according to claim 1, wherein: The first connecting member includes a first main body portion, and the second connecting member includes a second main body portion. One of the first main body portion and the second main body portion is arranged on the battery cell and electrically connected to the battery cell. The other of the first main body portion and the second main body portion is arranged on the circuit board and electrically connected to the circuit board. The first main body portion and the second main body portion can move relative to each other along the first direction and are electrically connected.

3. The battery assembly according to claim 2, wherein: The first connecting member further includes a first connecting portion provided on the first main body portion, and the second connecting member further includes a second connecting portion provided on the second main body portion. The first connecting portion and the second connecting portion are configured to be relatively movable along the first direction and to be positionally engaged.

4. The battery assembly according to claim 3, characterized in that The first connection portion includes an inserting slot, and the second connection portion includes an inserting column. The inserting column is inserted into the inserting slot, and the inserting column and the inserting slot are configured to be relatively movable along the first direction.

5. The battery assembly according to claim 4, characterized in that Along the first direction, the size of the plug-in slot is larger than the size of the plug-in post.

6. The battery assembly according to claim 4, characterized in that Along the second direction, the size of the plugging slot is larger than the size of the plugging post. The second direction intersects with the first direction, and the first direction and the second direction are respectively perpendicular to the plugging direction of the plugging post.

7. The battery assembly according to claim 4, characterized in that The plug-in slot is a through slot that passes through the first main body. The end of the plug-in post that faces away from the second main body passes through the plug-in slot and is provided with a limit head. Part of the first main body is provided between the limit head and the second main body. In which, along the second direction, the size of the limit head is larger than the size of the plug-in slot, the second direction intersects with the first direction, and the first direction and the second direction are respectively perpendicular to the plug-in direction of the plug-in column, and / or, along the first direction, the size of the limit head is larger than the size of the plug-in slot.

8. The battery assembly according to claim 7, characterized in that The limiting head and the plug-in column are an integrated rivet structure.

9. The battery assembly according to claim 8, characterized in that The limiting head and the plug-in column are detachable structures.

10. The battery assembly according to any one of claims 1 to 9, characterized in that: The plurality of battery cells are electrically connected via a conductive sheet to form a battery cell assembly, and the first connector is electrically connected to the battery cells via the conductive sheet.

11. The battery assembly according to claim 10, characterized in that The first connecting member is a metal sheet, and the metal sheet is welded to the conductive sheet.

12. The battery assembly according to any one of claims 1 to 9, characterized in that: The second connecting member is a transfer terminal, and the transfer terminal is welded to the circuit board.

13. The battery assembly according to any one of claims 1 to 9, characterized in that: The battery assembly includes a plurality of connecting assemblies, which are arranged at intervals along the first direction. The plurality of connecting assemblies are arranged in a one-to-one correspondence with the plurality of battery cells, and any one of the battery cells is electrically connected to the circuit board through the connecting assembly.

14. The battery assembly according to any one of claims 1 to 9, characterized in that: The battery cell includes a first surface with a largest area, and the first direction is perpendicular to the first surface.

15. A battery device, characterized in that: The battery device includes the battery assembly according to any one of claims 1 to 14.

16. An electrical device, characterized in that: The electrical device comprises the battery device according to claim 15, and the battery device is used to provide electrical energy for the electrical device.

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