First connecting assembly, battery system and electric equipment

Abstract

The invention discloses a first connecting assembly, a battery system and electric equipment. The battery system comprises a first module, a second module, the first connecting assembly and a second connecting assembly. The first module comprises a first battery cell module and a first shell, the first shell comprises a first bottom wall, the second module comprises a second battery cell module and a second shell, the second shell comprises a second top wall, and the second top wall faces the first bottom wall in the first direction. The first connecting assembly is arranged on the first bottom wall and comprises a first fixing part, a first insulating part, a first limiting piece and a first conductive part, the first fixing part comprises a first containing part, the first insulating part is provided with a first through hole, the first limiting piece is arranged in the first through hole and the first containing part, and a first gap exists between the first limiting piece and the first through hole; the first gap is configured to enable the first insulating portion to move relative to the first fixing portion. The second connecting assembly is arranged on the second top wall, and the second connecting assembly and the first connecting assembly are connected in an inserted mode.

Description

First connection component, battery system and electrical equipment Technical Field

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

[0002] Currently, when different modules in a battery system are stacked, adjacent modules are usually electrically connected by plugging connectors. If there is an error in the connection accuracy of different modules or the plugging accuracy of different connectors, the connectors will wear out or even be damaged, affecting the normal use of the battery modules.

[0003] Summary of the Invention

[0004] In view of the above situation, it is necessary to provide a battery system that can reduce the wear of connectors between different modules and extend the service life of the connectors.

[0005] An embodiment of the present application provides a first connecting component, comprising a first fixing portion, a first insulating portion, a first limiting member, and a first conductive portion. The first fixing portion is configured to be fixedly connected to an external device, and the first fixing portion includes a first receiving portion. The first insulating portion is provided with a first through hole, and the first fixing portion and the insulating portion are arranged along a first direction. The first limiting member is provided between the first through hole and the first receiving portion, and a first gap exists between the first limiting member and the first through hole, and the first gap is configured to enable the first insulating portion to move relative to the first fixing portion. The first conductive portion is provided on the first insulating portion, and the first conductive portion is configured to be electrically connected to the second connecting component.

[0006] The above-mentioned first connecting component sets a first gap between the first limit member and the first through hole, so that the first insulating part can move relative to the first fixed part, thereby achieving a floating effect, which is beneficial to reducing the impact of the docking error when the first connecting component and the second connecting component are connected, and extending the service life of the first connecting component and the second connecting component.

[0007] In some embodiments of the present application, the first limiting member includes a first part and a second part. The first part is provided on a side of the first insulating portion away from the first receiving portion, and the first part is configured to limit the separation of the first insulating portion and the first fixed portion. The second part passes through the first through hole and is fixed to the first receiving portion, and a first gap exists between the second part and the first through hole. The first limiting member is formed by the first part and the side of the first insulating portion away from the first receiving portion, and the second part passes through the first through hole and is fixed to the first receiving portion, so that the first part can play a limiting role to limit the separation of the first insulating portion and the first fixed portion.

[0008] In some embodiments of the present application, the second portion includes a first connecting portion and a second connecting portion, the first connecting portion connecting the first portion and the second connecting portion, at least a portion of the first connecting portion being located within the first through-hole, a first gap being formed between the first connecting portion and the first through-hole, and the second connecting portion being disposed within the first receiving portion. When the first insulating portion moves relative to the first fixing portion, the first limiting member can limit movement of the first insulating portion relative to the first fixing portion in the first direction via the first portion.

[0009] In some embodiments of the present application, the first gap ranges from 0.3 mm to 5 mm, which is beneficial for limiting the shaking amplitude of the first insulating part and improving assembly efficiency.

[0010] In some embodiments of the present application, along the second direction, the range of the first gap is 0.3mm-5mm, and the second direction is perpendicular to the first direction, which is conducive to multi-directional floating of the first insulating part, facilitates assembly, and improves assembly efficiency.

[0011] In some embodiments of the present application, the first gap ranges from 0.3 mm to 5 mm along the third direction, and the third direction is perpendicular to the first direction, which is conducive to multi-directional floating of the first insulating part, facilitates assembly, and improves assembly efficiency.

[0012] In some embodiments of the present application, the first insulating portion includes a base portion, which is located between the first portion and the first fixing portion along a first direction, and the first through-hole extends through the base portion. Along the first direction, the base portion has a length L1, and the first connecting portion has a length L2, where L2 is greater than L1. Along the first direction, the base portion is configured to be movable between the first portion and the first fixing portion. During the plug-and-socket connection of the first and second connecting components, the base portion's ability to float along the first direction facilitates plug-and-socket connection and improves assembly efficiency.

[0013] In some embodiments of the present application, the difference between L2 and L1 ranges from 0.5 mm to 2 mm, which is beneficial for limiting the shaking amplitude of the first insulating portion and facilitating the plugging of the first connecting component and the second connecting component.

[0014] In some embodiments of the present application, the first connecting assembly further includes a first enclosing portion connected to the first insulating portion. The first enclosing portion surrounds at least a portion of the first insulating portion and the first conductive portion when viewed along a first direction. The first enclosing portion can provide protection, reducing the risk of damage to the first insulating portion and the first conductive portion from foreign objects.

[0015] In some embodiments of the present application, the first connecting assembly further includes a first sealant, at least a portion of which is disposed on an outer surface of the first enclosing portion, and the first sealant is configured to connect the first enclosing portion to the second connecting assembly. The first sealant can provide a seal, thereby reducing the risk of foreign matter entering the first space through the gap between the first insulating portion and the second connecting assembly.

[0016] In some embodiments of the present application, the first connecting assembly includes a first fixing plate, a first insulating portion, a first limiting member, and a first conductive portion. The first fixing portion is configured to be fixedly connected to an external device and includes a first receiving portion. The first insulating portion is provided with a first through-hole, and the first fixing portion and the insulating portion are arranged along a first direction. The first limiting member includes a first portion and a second portion. The first portion is provided on a side of the first insulating portion away from the first receiving portion and is configured to limit the separation of the first insulating portion and the first fixing portion. The second portion passes through the first through-hole and is fixed to the first receiving portion. The first insulating portion includes a base. Along the first direction, the base is located between the first portion and the first fixing portion, and the first through-hole extends through the base. Along the first direction, the base has a length L1, and a distance L2 between the first portion and the first fixing portion, where L2 is greater than L1. The base is configured to move between the first portion and the first fixing portion. The first conductive portion is provided on the first insulating portion and is configured to connect to the second connecting assembly. The above-mentioned first connecting component is located between the first part of the first limit member and the first fixed part along the first direction through the base of the first insulating part, and the base is configured to move between the first part and the first fixed part, which can achieve a floating effect, which is beneficial to reduce the impact of the docking error when the first connecting component and the second connecting component are connected, and extend the service life of the first connecting component and the second connecting component.

[0017] In some embodiments of the present application, the difference between L2 and L1 ranges from 0.5 mm to 2 mm, which is beneficial for limiting the shaking amplitude of the first insulating portion and facilitating the plugging of the first connecting component and the second connecting component.

[0018] In some embodiments of the present application, the difference between L2 and L1 ranges from 0.8 mm to 1.5 mm, which is beneficial for further limiting the shaking amplitude of the first insulating portion and facilitating the plugging of the first connecting component and the second connecting component.

[0019] In some embodiments of the present application, there is a first gap between the first limit member and the first through hole. The first gap is configured to enable the first insulating part to move relative to the first fixed part, which is conducive to multi-directional floating of the first insulating part, facilitates assembly, and improves assembly efficiency.

[0020] In some embodiments of the present application, the first gap ranges from 0.3 mm to 5 mm, which is beneficial for limiting the shaking amplitude of the first insulating part and improving assembly efficiency.

[0021] In some embodiments of the present application, the first gap ranges from 0.5 mm to 2 mm, which is beneficial for further limiting the shaking amplitude of the first insulating part and improving assembly efficiency.

[0022] In some embodiments of the present application, along the second direction, the range of the first gap is 0.3mm-5mm, and the second direction is perpendicular to the first direction, which is conducive to multi-directional floating of the first insulating part, facilitates assembly, and improves assembly efficiency.

[0023] In some embodiments of the present application, the first gap ranges from 0.3 mm to 5 mm along the third direction, and the third direction is perpendicular to the first direction, which is conducive to multi-directional floating of the first insulating part, facilitates assembly, and improves assembly efficiency.

[0024] An embodiment of the present application also provides a battery system, comprising a first module, a second module, a second connecting assembly, and the first connecting assembly described in any of the aforementioned embodiments. The first module comprises a first battery cell module and a first shell, the first shell being provided with a first space, the first battery cell module being provided in the first space, the first shell comprising a first bottom wall, the first bottom wall being provided with a first bottom wall through-hole. The first fixing portion is fixed to the first bottom wall, the first conductive portion is connected to the first battery cell module, and a portion of the first connecting assembly extends out of the first space through the first bottom wall through-hole. The second module comprises a second battery cell module and a second shell, the second shell being provided with a second space, the second battery cell module being provided in the second space, the second shell comprising a second top wall, the second top wall being arranged facing the first bottom wall along the first direction, the second top wall being provided with a second top wall through-hole. The second connecting assembly is provided on the second top wall and connected to the second battery cell module, a portion of the second connecting assembly extending out of the second space through the second top wall through-hole, and the second connecting assembly and the first connecting assembly are plug-connected.

[0025] In the above-mentioned battery system, the first module and the second module are plug-connected through the first connecting component and the second connecting component. The first connecting component can move relative to the first fixed part through the first insulating part, thereby achieving a floating effect, which is beneficial to reducing the impact of the docking error between the first connecting component and the second connecting component, extending the service life of the first connecting component and the second connecting component, and reducing the impact of the docking error between the first connecting component and the second connecting component on the battery system.

[0026] In some embodiments of the present application, the second connecting component includes a second insulating part and a second conductive part, the second insulating part is fixed to the second top wall, at least part of the second insulating part extends out of the second space through the second top wall through hole, the second conductive part is arranged on the second insulating part, and the second conductive part is connected to the first conductive part.

[0027] In some embodiments of the present application, the first bottom wall includes a first bottom surface and a first recessed portion, the first recessed portion is recessed inwardly into the first bottom surface along a first direction, the first bottom wall through-hole passes through the first recessed portion, and at least a portion of the first insulating portion and at least a portion of the first conductive portion are located within the first recessed portion. The second top wall includes a second top surface and a first protrusion, the second top surface faces the first bottom surface along the first direction, the first protrusion extends out of the second top surface along the first direction, the second top wall through-hole passes through the first protrusion, and at least a portion of the second conductive portion extends out of the first protrusion along the first direction. At least a portion of the first protrusion and at least a portion of the second conductive portion are located within the first recess, which helps reduce the risk of foreign matter entering through the gap between the first bottom surface and the second top surface and contacting the first connecting component and the second connecting component, and helps extend the service life of the first connecting component and the second connecting component.

[0028] An embodiment of the present application further provides an electrical device comprising the battery system described in any one of the aforementioned embodiments.

[0029] In the above-mentioned electrical equipment, the first module and the second module of the battery system are plug-connected through the first connecting component and the second connecting component. The first connecting component can move relative to the first fixed part through the first insulating part, thereby achieving a floating effect, which is beneficial to reducing the impact of the docking error between the first connecting component and the second connecting component, extending the service life of the first connecting component and the second connecting component, and reducing the impact of the docking problem of the first connecting component and the second connecting component on the electrical equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] FIG1 is a schematic structural diagram of a battery system in one embodiment of the present application.

[0031] FIG. 2 is a cross-sectional view of the battery system shown in FIG. 1 according to an embodiment of the present application.

[0032] FIG3 is a schematic structural diagram of a battery system in one embodiment of the present application.

[0033] FIG4 is a cross-sectional view of the battery system shown in FIG3 according to an embodiment of the present application.

[0034] FIG5 is an exploded view of a battery system in a cross-sectional state according to an embodiment of the present application.

[0035] FIG6 is a partial cross-sectional view of the connection area between the first connecting component and the first bottom wall in one embodiment of the present application.

[0036] FIG. 7 is an enlarged view of region VII in FIG. 6 in one embodiment of the present application.

[0037] FIG8 is a schematic structural diagram of the structure shown in FIG7 , in which the first insulating member is in a state of being plugged into the second connecting assembly.

[0038] FIG9 is a schematic structural diagram of the structure shown in FIG7 in another state where the first insulating member is plugged into the second connecting assembly.

[0039] FIG10 is a schematic structural diagram of a first connecting component in an embodiment of the present application.

[0040] FIG. 11 is an exploded view of a first connecting assembly in one embodiment of the present application.

[0041] FIG12 is a partial cross-sectional view of the connection area between the first connecting component and the first bottom wall in one embodiment of the present application.

[0042] FIG13 is a partial cross-sectional view of the connection area between the second connecting component and the second top wall in one embodiment of the present application.

[0043] FIG14 is a schematic structural diagram of a second connection assembly in one embodiment of the present application.

[0044] FIG. 15 is an exploded view of a second connecting assembly in one embodiment of the present application.

[0045] FIG16 is a partial cross-sectional view of the plug-in area of ​​the first connecting component and the second connecting component in one embodiment of the present application.

[0046] FIG17 is a schematic structural diagram of the second module in one embodiment of the present application.

[0047] FIG18 is a schematic structural diagram of the first module in one embodiment of the present application.

[0048] FIG19 is a schematic structural diagram of an electrical device in one embodiment of the present application.

[0049] Description of Main Component Symbols Battery System 100 First Module 10 First Cell Module 11 First Housing 12 First Bottom Wall 121 First Bottom Wall Through-hole 1211 First Bottom Surface 1212 First Concave Portion 1213 Second Guide Hole 1214 First Top Wall 122 Fourth Guide Post 1224 First Left Wall 123 First Right Wall 124 First Front Wall 125 First Rear Wall 126 First Space 127 Second Module 20 Second Cell Module 21 Second Housing 22 Second Top Wall 221 Second Top Wall Through-hole 2211 Second Top Surface 2212 First Concave Portion 2213 Second Guide Post 2214 Second Bottom Wall 222 Second Left Wall 223 Second Right Wall224 Second front wall 225 Second rear wall 226 Second space 227 First connecting component 30 First fixing portion 31 First receiving portion 311 Fourth through hole 312 Fixing hole 313 First insulating portion 32 Base portion 320 First through hole 321 Second receiving portion 322 Third protrusion 323 First limiting member 33 First portion 331 Second portion 332 First connecting portion 3321 Second connecting portion 3322 First conductive portion 34 First gap 351 Second gap 352 First surrounding portion 37 Buckle portion 371 Fifth through hole 372 First sealing member 38 First guide post 39Second connecting component 40 Second conductive portion 41 Second insulating portion 42 Third receiving portion 421 First groove 422 First guide hole 423 Second sealing member 43 Third sealing member 44 Electrical device 200 First direction Z Second direction Y Third direction X

[0050] The following specific implementation methods will further illustrate this application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0051] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0052] It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be a centrally arranged element at the same time. When an element is considered to be "set on" another element, it may be directly set on the other element or there may be a centrally arranged element at the same time. In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a communication between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0053] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the accompanying drawings are intended to cover non-exclusive inclusions.

[0054] In the description of the embodiments of this application, the technical terms "first," "second," etc. are used only to distinguish different objects and should not be understood to indicate or imply relative importance or to implicitly indicate the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise specifically defined.

[0055] In the description of the embodiments of the present application, the technical terms "front", "rear", "left", "right", "top" and "bottom" are only used to indicate relative position relationships for ease of understanding and description, and do not limit the specific positions of the components.

[0056] It should be noted that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary and should not constitute any limitation to the present application.

[0057] Currently, when different modules in a battery system are stacked, adjacent modules are usually electrically connected by plugging connectors. If there is an error in the stacking accuracy of different modules or the plugging accuracy of different connectors, the connectors will wear out or even be damaged, affecting the normal use of the battery modules.

[0058] An embodiment of the present application provides a first connecting component, comprising a first fixing portion, a first insulating portion, a first limiting member, and a first conductive portion. The first fixing portion is configured to be fixedly connected to an external device, and the first fixing portion includes a first receiving portion. The first insulating portion is provided with a first through hole, and the first fixing portion and the insulating portion are arranged along a first direction. The first limiting member is provided between the first through hole and the first receiving portion, and a first gap is provided between the first limiting member and the first through hole, and the first gap is configured to enable the first insulating portion to move relative to the first fixing portion. The first conductive portion is provided on the first insulating portion, and the first conductive portion is configured to be electrically connected to an external device.

[0059] The above-mentioned first connecting component sets a first gap between the first limit member and the first through hole, so that the first insulating part can move relative to the first fixed part, thereby achieving a floating effect, which is beneficial to reducing the impact of the docking error when the first connecting component and the external device are connected, and extending the service life of the first connecting component and the external device.

[0060] The embodiments of the present application are further described below with reference to the accompanying drawings.

[0061] As shown in Figures 2 and 5 to 9, an embodiment of the present application provides a first connection assembly. The first connection assembly 30 includes a first fixing portion 31, a first insulating portion 32, a first stopper 33, and a first conductive portion 34. The first fixing portion 31 is configured to be fixedly connected to an external device and includes a first receiving portion 311. The first insulating portion 32 is provided with a first through-hole 321. The first fixing portion 31 and the first insulating portion 32 are arranged along a first direction Z. The first stopper 33 is disposed between the first through-hole 321 and the first receiving portion 311. A first gap 351 exists between the first stopper 33 and the first through-hole 321. The first gap 351 is configured to allow the first insulating portion 32 to move relative to the first fixing portion 31. A portion of the first stopper 33 passes through the first through-hole 321 and is disposed in the first receiving portion 311. The first conductive portion 34 is disposed on the first insulating portion 32 and is configured to be electrically connected to an external device.

[0062] In one embodiment, the first limiting member 33 includes a first portion 331 and a second portion 332 that are connected to each other. The first portion 331 is arranged on a side of the first insulating portion 32 away from the first receiving portion 311. The first portion 331 is configured to limit the movement of the first insulating portion 32 relative to the first fixing portion 31 along the first direction Z. The second portion 332 passes through the first through hole 321 and is connected to the first receiving portion 311.

[0063] In one embodiment, the second portion 332 includes a first connecting portion 3321 and a second connecting portion 3322. The first connecting portion 3321 is connected to the first portion 331 and the second connecting portion 3322, and the second connecting portion 3322 is disposed in the first receiving portion 311. Along the first direction Z, the first insulating portion 32 includes a base portion 320 located between the first portion 331 and the first fixing portion 31. The first through hole 321 is disposed in the base portion 320. When the first insulating portion 32 moves relative to the first fixing portion 31, the first stopper 33 limits the movement of the base portion 320 relative to the first fixing portion 31 along the first direction Z by limiting the movement of the first portion 331.

[0064] In one embodiment, a first gap 351 is provided between the first stopper 33 and the first through hole 321 along the second direction Y. The first gap 351 is configured to allow the first insulating portion 32 to move relative to the first fixing portion 31. The first connecting component 30 is configured to be pluggably connected to the second connecting component 40. During the plugging process of the first connecting component 30 and the second connecting component 40, the first gap 351 allows the first insulating portion 32 to float relative to the first fixing portion 31 to adjust the plugging posture, which facilitates the plugging of the first connecting component 30 and the second connecting component 40 and reduces the impact of positional errors on the plugging of the first connecting component 30 and the second connecting component 40. The second direction Y is perpendicular to the first direction Z.

[0065] In one embodiment, along the second direction Y, before the first connecting component 30 and the second connecting component 40 are plugged together, there is a first gap 351 between the first connecting portion 3321 and the first through hole 321. The range of the first gap 351 is between 0.3 mm and 5 mm, which is beneficial for controlling the range of movement of the first insulating portion 32 relative to the first fixing portion 31, and is beneficial for the plugging of the first connecting component 30 and the second connecting component 40.

[0066] In one embodiment, after the first connecting assembly 30 and the second connecting assembly 40 are plugged together, when one side of the first connecting portion 3321 contacts and connects with one side of the base 320 along the second direction Y, the other side of the first connecting portion 3321 and the other side of the base 320 form a first gap 351. When the first connecting assembly 30 and the second connecting assembly 40 are disassembled and separated, the first insulating portion 32 can float relative to the first fixing portion 31, which helps reduce wear during the separation of the first connecting assembly 30 and the second connecting assembly 40.

[0067] In one embodiment, after the first connecting assembly 30 and the second connecting assembly 40 are plugged together, the two sides of the first connecting portion 3321 are separated from the base 320 along the second direction Y. The first gap 351 includes two portions: one portion is located between one side of the first connecting portion 3321 and the base 320, and the other portion is located between the other side of the first connecting portion 3321 and the base 320. When the first connecting assembly 30 and the second connecting assembly 40 are disassembled and separated, the first insulating portion 32 can float relative to the first fixing portion 31, which helps reduce wear during the separation of the first connecting assembly 30 and the second connecting assembly 40.

[0068] In one embodiment, the length of the first gap 351 along the second direction Y is 0.3 mm to 5 mm, which helps limit the swing amplitude of the first insulating portion 32 and improves assembly efficiency. Optionally, the length of the first gap 351 along the second direction Y is 0.5 mm to 2 mm, which helps limit the swing amplitude of the first insulating portion 32 and facilitates the insertion of the first connecting component 30 and the second connecting component 40. Optionally, the length of the first gap 351 along the second direction Y is 2 mm to 3 mm. Optionally, the length of the first gap 351 along the second direction Y is 3 mm to 5 mm.

[0069] In one embodiment, along the second direction Y, the length of the first gap 351 is any one of 0.3 mm, 0.4 mm, 0.6 mm, 0.8 mm, 1 mm, 1.2 mm, 1.4 mm, 1.6 mm, 1.8 mm, 2 mm, 2.2 mm, 2.4 mm, 2.6 mm, 2.8 mm, 3 mm, 3.2 mm, 3.4 mm, 3.6 mm, 3.8 mm, 4 mm, 4.2 mm, 4.4 mm, 4.6 mm, 4.8 mm and 5 mm.

[0070] In one embodiment, the length of the first gap 351 along the second direction Y is measured by measuring the inner length of the first through hole 321 and the outer length of the first connecting portion 3321 along the second direction Y, and the difference between the two is the length of the first gap 351.

[0071] In one embodiment, the first through hole 321 is circular, the first connecting portion 3321 is cylindrical, and the length of the first gap 351 along the second direction Y is the difference between the inner diameter of the first through hole 321 and the outer diameter of the first connecting portion 3321 .

[0072] In one embodiment, a second gap 352 (as shown in FIG. 7 ) exists between the first portion 331 and the first fixing portion 31 along the first direction Z. The second gap 352 is configured to allow the first insulating portion 32 to move relative to the first fixing portion 31 along the first direction Z, thereby facilitating insertion and separation of the first connecting assembly 30 and the second connecting assembly 40.

[0073] In one embodiment, along the first direction Z, the length of the base 320 is L1, the length of the first connecting portion 3321 is L2, L2 is greater than L1, and before the first connecting component 30 and the second connecting component 40 are plugged into each other, a second gap 352 exists between the base 320 and the first portion 331.

[0074] During the plug-in connection process of the first connecting component 30 and the second connecting component 40 , the base 320 is configured to be movable along the first direction Z. The floating design of the base 320 facilitates the plug-in connection of the first connecting component 30 and the second connecting component 40 .

[0075] In one embodiment, the first connecting assembly 30 includes a first fixing portion 31, a first insulating portion 32, a first stopper 33, and a first conductive portion 34. The first fixing portion 31 is configured to be fixedly connected to an external device and includes a first receiving portion 311. The first insulating portion 32 is provided with a first through-hole 321. The first fixing portion 31 and the first insulating portion 32 are arranged along a first direction Z. The first stopper 33 includes a first portion 331 and a second portion 332 that are connected to each other. The first portion 331 is provided on a side of the first insulating portion 32 away from the first receiving portion 311 and is configured to limit movement of the first insulating portion 32 relative to the first fixing portion 31 in the first direction Z. The second portion 332 passes through the first through-hole 321 and is connected to the first receiving portion 311. The first insulating portion 32 includes a base 320. The base 320 is located between the first stopper 33 and the first fixing portion 31 along the first direction Z. The first through-hole 321 is provided in the base 320. Along the first direction Z, the base 320 has a length L1, and the distance between the first portion 331 and the first receiving portion 311 is L2, where L2 is greater than L1. The base 320 is configured to move between the first portion 331 and the first fixing portion 31. The first conductive portion 34 is provided on the first insulating portion 32 and is configured to electrically connect to an external device.

[0076] In one embodiment, the difference between L2 and L1 ranges from 0.5 mm to 2 mm, which helps limit the shaking amplitude of the first insulating portion 32 and facilitates the plugging of the first connecting component 30 and the second connecting component 40. Optionally, the difference between L2 and L1 ranges from 0.8 mm to 1.5 mm, which helps further improve the plug-in connection efficiency of the first connecting component 30 and the second connecting component 40.

[0077] After the first connecting assembly 30 and the second connecting assembly 40 are connected, a second gap 352 exists between the base 320 and the first fixing portion 31 (as shown in FIG8 ). Optionally, the base 320 and the first portion 331 are connected, and the second gap 352 is located between the base 320 and the first fixing portion 31. Optionally, the second gap 352 includes two portions (as shown in FIG9 ), one portion located between the base 320 and the first fixing portion 31, and the other portion located between the base 320 and the first portion 331.

[0078] In one embodiment, a second gap 352 (as shown in FIG7 ) exists between the base 320 and the first portion 331. The first insulating portion 32 can adjust its posture by floating, further reducing the impact of the docking error between the first connecting assembly 30 and the second connecting assembly 40, thereby extending the service life of the first connecting assembly 30 and the second connecting assembly 40.

[0079] In one embodiment, the length of the second gap 352 along the first direction Z is 0.3 mm to 5 mm, which helps improve the connection stability and assembly efficiency between the second portion 332 and the first receiving portion 311. Optionally, the length of the second gap 352 along the first direction Z is 0.5 mm to 2 mm, which helps limit the shaking amplitude of the first insulating portion 32 and facilitates the insertion of the first connecting component 30 and the second connecting component 40. Optionally, the length of the second gap 352 along the first direction Z is 2 mm to 3 mm. Optionally, the length of the second gap 352 along the first direction Z is 3 mm to 5 mm.

[0080] In one embodiment, the length of the second gap 352 is any one of 0.3mm, 0.4mm, 0.6mm, 0.8mm, 1mm, 1.2mm, 1.4mm, 1.6mm, 1.8mm, 2mm, 2.2mm, 2.4mm, 2.6mm, 2.8mm, 3mm, 3.2mm, 3.4mm, 3.6mm, 3.8mm, 4mm, 4.2mm, 4.4mm, 4.6mm, 4.8mm and 5mm.

[0081] In one embodiment, the first receiving portion 311 is internally threaded, and the second connecting portion 3322 is threaded. The second connecting portion 3322 is connected to the internal thread of the first receiving portion 311, which helps improve the connection stability and assembly efficiency between the second portion 332 and the first receiving portion 311. By screwing the first stopper 33 so that the first connecting portion 3321 contacts and connects to the first receiving portion 311, the first stopper 33 can be assembled into place. By controlling the length of the first connecting portion 3321 along the first direction Z, the length of the second gap 352 along the first direction Z can be controlled, which helps simplify the assembly process and improve assembly efficiency.

[0082] In one embodiment, before the first connecting component 30 and the second connecting component 40 are plugged together along the third direction X, a third gap (not shown) exists between the first connecting portion 3321 and the first through hole 321. The length of the third gap is between 0.3 mm and 5 mm, which helps control the floating range of the first insulating portion 32 relative to the first fixing portion 31 and facilitates the plugging of the first connecting component 30 and the second connecting component 40. The third direction X is perpendicular to both the first direction Z and the second direction Y.

[0083] In one embodiment, after the first connecting component 30 and the second connecting component 40 are plugged and connected, along the third direction X, when one side of the first connecting portion 3321 contacts and connects with one side of the base 320, a third gap is formed between the other side of the first connecting portion 3321 and the other side of the base 320.

[0084] In one embodiment, after the first connecting component 30 and the second connecting component 40 are plugged into each other, the third gap includes two parts. Along the third direction X, the first connecting portion 3321 is separated from the base 320, and a part of the third gap is formed between one side of the first connecting portion 3321 and the base 320, and another part of the third gap is formed between the other side of the first connecting portion 3321 and the base 320.

[0085] In one embodiment, along the third direction X, the length of the third gap is any one of 0.3 mm, 0.4 mm, 0.6 mm, 0.8 mm, 1 mm, 1.2 mm, 1.4 mm, 1.6 mm, 1.8 mm, 2 mm, 2.2 mm, 2.4 mm, 2.6 mm, 2.8 mm, 3 mm, 3.2 mm, 3.4 mm, 3.6 mm, 3.8 mm, 4 mm, 4.2 mm, 4.4 mm, 4.6 mm, 4.8 mm and 5 mm.

[0086] In one embodiment, the first through hole 321 is circular, the first connecting portion 3321 is cylindrical, and the diameter of the first through hole 321 is larger than the diameter of the first connecting portion 3321 , which helps to reduce the wear caused by the impact when the first insulating portion 32 floats relative to the first fixing portion 31 .

[0087] As shown in Figures 1 and 2, an embodiment of the present application provides a battery system 100, including a first module 10, a second module 20, a first connecting component 30 and a second connecting component 40, the second module 20 and the first module 10 are stacked along a first direction Z, the first connecting component 30 is arranged on the first module 10, the second connecting component 40 is arranged on the second module 20, and the first connecting component 30 and the second connecting component 40 are plug-connected.

[0088] As shown in Figures 3 and 4, in one embodiment, the battery system 100 includes n modules, which are stacked along a first direction Z, with two adjacent modules connected to each other. Where n is a natural number greater than or equal to 3. In one embodiment, adjacent modules can be connected in series or in parallel.

[0089] In one embodiment, the battery system 100 further includes a plurality of first connection assemblies 30 and a plurality of second connection assemblies 40. Each module is provided with a first connection assembly 30 and a second connection assembly 40, and any two adjacent modules are connected by plugging the first connection assembly 30 and the second connection assembly 40 together.

[0090] In one embodiment, along the first direction Z, some adjacent modules are connected by plugging the first connecting component 30 and the second connecting component 40 , and some adjacent modules are connected by other connection methods.

[0091] As shown in Figures 2 and 5, in one embodiment, the first module 10 includes a first battery module 11, which includes a plurality of first battery cells (not shown), the plurality of first battery cells being connected in series and / or in parallel, and the first conductive portion 34 being connected to the plurality of first battery cells. Optionally, the first conductive portion 34 includes a power conductive portion. Optionally, the first conductive portion 34 includes a signal conductive portion that can be used to transmit signals such as voltage and current.

[0092] In one embodiment, the second module 20 includes a second battery module 21, which includes a plurality of second battery cells (not shown), which are connected in series and / or in parallel. The second connecting assembly 40 includes a second conductive portion 41, which is connected to the plurality of second battery cells. Optionally, the second conductive portion 41 includes a power conductive portion. Optionally, the second conductive portion 41 includes a signal conductive portion that can be used to transmit signals such as voltage and current.

[0093] The first conductive portion 34 and the second conductive portion 41 are connected to each other, so that the first module 10 and the second module 20 are electrically connected.

[0094] As an example, the following further describes the method of plugging and connecting the first module 10 and the second module 20 via the first connecting component 30 and the second connecting component 40. It should be noted that the method of plugging and connecting other adjacent modules via the first connecting component 30 and the second connecting component 40 can be any of the following embodiments of plugging and connecting the first module 10 and the second module 20 via the first connecting component 30 and the second connecting component 40.

[0095] As shown in Figures 1, 2, and 5, the first module 10 includes a first housing 12, which defines a first space 127. The first cell module 11 is disposed within the first space 127. The first housing 12 includes a first bottom wall 121, which defines a first bottom wall through-hole 1211. The first connecting assembly 30 is disposed on the first bottom wall 121. A portion of the first connecting assembly 30 is located within the first space 127 and connected to the first cell module 11. A portion of the first connecting assembly 30 extends out of the first space 127 through the first bottom wall through-hole 1211.

[0096] In one embodiment, the first shell 12 also includes a first top wall 122, a first left wall 123, a first right wall 124, a first front wall 125 and a first rear wall 126. The first bottom wall 121 and the first top wall 122 are arranged along a first direction Z, the first right wall 124 and the first left wall 123 are arranged along a second direction Y, and the first rear wall 126 and the first front wall 125 are arranged along a third direction X. The first top wall 122, the first bottom wall 121, the first left wall 123, the first right wall 124, the first front wall 125 and the first rear wall 126 form a first space 127.

[0097] The second module 20 includes a second housing 22, which defines a second space 227. The second cell module 21 is disposed within the second space 227. The second housing 22 includes a second top wall 221, which faces the first bottom wall 121 along the first direction Z. The second top wall 221 defines a second top wall through-hole 2211. A second connecting assembly 40 is disposed on the second top wall 221. A portion of the second connecting assembly 40 is located within the second space 227 and connected to the second cell module 21. A portion of the second connecting assembly 40 extends out of the second space 227 through the second top wall through-hole 2211. The second connecting assembly 40 extending from the second space 227 is pluggably connected to the first connecting assembly 30 extending from the first space 127.

[0098] In one embodiment, the second shell 22 also includes a second bottom wall 222, a second left wall 223, a second right wall 224, a second front wall 225 and a second rear wall 226. The second bottom wall 222 and the second top wall 221 are arranged along the first direction Z, the second right wall 224 and the second left wall 223 are arranged along the second direction Y, the second rear wall 226 and the second front wall 225 are arranged along the third direction X, and the second top wall 221, the second bottom wall 222, the second left wall 223, the second right wall 224, the second front wall 225 and the second rear wall 226 form a second space 227.

[0099] In one embodiment, the first module 10 and the second module 20 are relatively heavy, and the relative floating between the first insulating portion 32 and the first fixing portion 31 facilitates stacking and installation of the first module 10 and the second module 20, reducing assembly difficulty and improving assembly efficiency. In one embodiment, the stacked first module 10 and the second module 20 can be used as an energy storage device, such as a household energy storage device.

[0100] In the above-mentioned battery system 100, the first module 10 and the second module 20 are plug-connected through the first connecting component 30 and the second connecting component 40, and the first insulating part 32 can move relative to the first fixing part 31 along the first direction Z, thereby achieving a floating effect, which is beneficial to reducing the impact of the docking error between the first connecting component 30 and the second connecting component 40, and extending the service life of the first connecting component 30 and the second connecting component 40.

[0101] In one embodiment, the first connecting assembly 30 further includes a first elastic member (not shown), which is disposed between the first insulating portion 32 and the first fixing portion 31. When the first insulating portion 32 moves relative to the first fixing portion 31 along the first direction Z, the first elastic member can act as an elastic buffer, providing damped movement of the first insulating portion 32, thereby improving the stability of the movement of the first insulating portion 32 relative to the first fixing portion 31.

[0102] In one embodiment, the first elastic member contacts and connects the first insulating portion 32 and the first fixed portion 31. The first elastic member can provide a force for the first insulating portion 32, thereby improving the position accuracy of the first insulating portion 32 relative to the first fixed portion 31 in the initial state, which is beneficial to improving the plug-in accuracy between the first connecting component 30 and the second connecting component 40 and reducing plug-in wear.

[0103] Optionally, the first elastic member includes but is not limited to any one of a compression spring, a rubber pad, a nylon pad and a silicone pad.

[0104] As shown in Figures 5 and 6, in one embodiment, the first insulating portion 32 further includes a second receiving portion 322, and at least a portion of the first conductive portion 34 is located within the second receiving portion 322. At least a portion of the first insulating portion 32 is located outside the first space 127. In one embodiment, at least a portion of the first fixing portion 31 is located within the first space 127. The first stopper 33 is located within the first space 127, a portion of the first insulating portion 32 is located within the first space 127, a portion of the first insulating portion 32 is located outside the first space 127, at least a portion of the second receiving portion 322 is located outside the first space 127, and at least a portion of the first conductive portion 34 is located outside the first space 127.

[0105] In one embodiment, at least a portion of the second conductive portion 41 is disposed outside the second space 227 .

[0106] As shown in Figures 10, 11, and 12, in one embodiment, the first fixing portion 31 is fixedly connected to the first bottom wall 121. The first fixing portion 31 is further defined with a fixing hole 313. The first connecting assembly 30 further includes a fastener (not shown). A portion of the fastener passes through the first bottom wall 121 and connects to the fixing hole 313, thereby fixing the first fixing portion 31 to the first bottom wall 121. Optionally, the fixing hole 313 is a threaded hole, and the fastener is a screw.

[0107] In one embodiment, the number of fixing holes 313 and fasteners is equal and multiple, and one fastener is connected to one fixing hole 313, which helps to improve the stability of the first fixing portion 31 connected to the first bottom wall 121 and improve the seismic resistance of the battery system 100. Optionally, the number of fixing holes 313 on the first fixing portion 31 is four, and the four fixing holes 313 are arranged in a direction.

[0108] In one embodiment, the first fixing portion 31 further defines a fourth through hole 312 , and a portion of the first insulating portion 32 passes through the fourth through hole 312 and extends out of the first space 127 , which helps to simplify the assembly process.

[0109] In one embodiment, the first connecting assembly 30 further includes a first enclosing portion 37, which is connected to the first insulating portion 32. At least a portion of the first enclosing portion 37 extends out of the first space 127. When viewed along the first direction Z, the first enclosing portion 37 surrounds at least a portion of the first insulating portion 32 and at least a portion of the first conductive portion 34. The first enclosing portion 37 provides protection, reducing the risk of damage to the first insulating portion 32 and the first conductive portion 34 from foreign objects. The first enclosing portion 37 is connected to the first insulating portion 32 and can move relative to the first fixing portion 31 along with the first insulating portion 32, thereby ensuring the protective effect of the first enclosing portion 37.

[0110] In one embodiment, the first enclosing portion 37 has a snap portion 371 and a fifth through-hole 372 extending through the snap portion 371. The first insulating portion 32 also has a third protrusion 323, which is partially located within the fifth through-hole 372 and connected to the snap portion 371. The first enclosing portion 37 and the first insulating portion 32 are connected to the snap portion 371 via the third protrusion 323, thereby achieving a position-limited connection. This simplifies the assembly process and improves assembly efficiency.

[0111] In one embodiment, the number of the snap portions 371 and the third protrusions 323 is equal and there are two of them. The two snap portions 371 are respectively located at the two ends of the first surrounding portion 37 along the second direction Y, and the two third protrusions 323 are respectively located at the two ends of the first insulating portion 32 along the second direction Y. Each third protrusion 323 is connected to a snap portion 371, which is beneficial to improving the stability of the connection between the first surrounding portion 37 and the first insulating portion 32.

[0112] In one embodiment, along the first direction Z, the third protrusion 323 contacts and connects to the latch portion 371, facilitating limiting displacement of the first enclosing portion 37 relative to the first insulating portion 32 along the first direction Z. In one embodiment, along the third direction X, the third protrusion 323 contacts and connects to the latch portion 371, facilitating limiting displacement of the first enclosing portion 37 relative to the first insulating portion 32 along the third direction X. In one embodiment, along the second direction Y, both ends of the first insulating portion 32 are respectively connected to the inner side surface of the first enclosing portion 37, facilitating limiting displacement of the first enclosing portion 37 relative to the first insulating portion 32 along the second direction Y.

[0113] In one embodiment, the first connecting assembly 30 further includes a first sealing member 38. A portion of the first sealing member 38 is located within the first space 127 and connected to the first fixing portion 31 and the first bottom wall 121. A portion of the first sealing member 38 passes through the fourth through-hole 312 and connects to the first surrounding portion 37 outside the first space 127. The first sealing member 38 provides a seal, helping to reduce the risk of foreign matter entering the first space 127 through the gap between the first insulating portion 32 and the fourth through-hole 312.

[0114] In one embodiment, when viewed along the first direction Z, the first sealing member 38 surrounds at least a portion of the first surrounding portion 37 and is in contact with and connected to the first surrounding portion 37 , which helps to further improve the sealing effect of the first sealing member 38 .

[0115] In one embodiment, the first sealing member 38 includes a sealing ring. Optionally, the first sealing member 38 is made of any one of natural rubber, silicone rubber, ethylene propylene rubber, fluorinated rubber, and nitrile rubber.

[0116] As shown in Figures 12 to 16, in one embodiment, the second connecting assembly 40 is fixedly connected to the second top wall 221. When the first connecting assembly 30 and the second connecting assembly 40 are plugged together, the second connecting assembly 40 is fixedly arranged, and the first insulating portion 32 causes the first conductive portion 34 to float relative to the second conductive portion 41. This helps reduce the impact of plugging and docking errors between the first connecting assembly 30 and the second connecting assembly 40, thereby extending the service life of the first connecting assembly 30 and the second connecting assembly 40. Optionally, the second connecting assembly 40 is fixedly connected to the second top wall 221 via bolts (not shown).

[0117] The second connecting component 40 also includes a second insulating portion 42, which is fixed to the second top wall 221, and at least a portion of the second insulating portion 42 extends out of the second space 227 through the second top wall through hole 2211. The second insulating portion 42 is provided with a third receiving portion 421, and at least a portion of the second conductive portion 41 is provided in the third receiving portion 421.

[0118] The second insulating portion 42 is plug-connected to the first insulating portion 32, so that the second conductive portion 41 is in contact with and connected to the first conductive portion 34. Optionally, a portion of the first insulating portion 32 is inserted into the third receiving portion 421, and a portion of the second conductive portion 41 is inserted into the second receiving portion 322 and connected to the first conductive portion 34. This multi-layer plug-in connection helps improve the stability of the connection between the first conductive portion 34 and the second conductive portion 41, and also helps reduce the risk of foreign matter entering the second receiving portion 322 and the third receiving portion 421, thereby extending the service life of the first conductive portion 34 and the second conductive portion 41.

[0119] In one embodiment, the second connecting assembly 40 further includes a second sealing member 43. At least a portion of the second sealing member 43 is located within the second space 227 and is connected to the second insulating portion 42 and the second top wall 221. The second sealing member 43 provides a seal, thereby reducing the risk of foreign matter entering the second space 227 through the gap between the second insulating portion 42 and the second top wall through-hole 2211.

[0120] In one embodiment, the second sealing member 43 includes a sealing ring. Optionally, the second sealing member 43 is made of any one of natural rubber, silicone rubber, ethylene propylene rubber, fluorinated rubber, and nitrile rubber.

[0121] In one embodiment, the second connecting assembly 40 further includes a third seal 44, which is disposed on the outer surface of the second insulating portion 42. After the first connecting assembly 30 and the second connecting assembly 40 are plugged and connected, the third seal 44 is located between the first surrounding portion 37 and the second insulating portion 42, and the third seal 44 is connected to the first surrounding portion 37 and the second insulating portion 42. The third seal 44 provides a sealing effect, which helps reduce the risk of foreign matter entering the second receiving portion 322 and the third receiving portion 421 through the gap between the second insulating portion 42 and the first surrounding portion 37, thereby extending the service life of the first conductive portion 34 and the second conductive portion 41.

[0122] In one embodiment, the third sealing member 44 is disposed in the second insulating portion 42. A first groove 422 is defined on the outer surface of the second insulating portion 42. The first groove 422 is located outside the second space 227. A portion of the third sealing member 44 is located within the first groove 422. A portion of the third sealing member 44 extends outside the first groove 422. When viewed in the direction opposite to the first direction Z, a portion of the third sealing member 44 is located outside the second insulating portion 42. The provision of the first groove 422 to accommodate the third sealing member 44 improves the stability of the connection between the third sealing member 44 and the second insulating portion 42, thereby reducing the risk of displacement of the third sealing member 44 and resulting in sealing failure.

[0123] In one embodiment, along the second direction Y and the third direction X, the third sealing member 44 is in a compressed and deformed state under the action of the second insulating portion 42 and the first surrounding portion 37, which is beneficial to improving its sealing effect and further reducing the risk of foreign matter passing through the gap between the second insulating portion 42 and the first surrounding portion 37 and entering the second receiving portion 322 and the third receiving portion 421.

[0124] In one embodiment, the third sealing member 44 includes a sealing ring. Optionally, the third sealing member 44 is made of any one of natural rubber, silicone rubber, ethylene propylene rubber, fluorinated rubber, and nitrile rubber.

[0125] As shown in Figures 10, 17, and 18, in one embodiment, one of the first connecting assembly 30 and the second connecting assembly 40 is provided with a first guide post 39, and the other of the first connecting assembly 30 and the second connecting assembly 40 is provided with a first guide hole 423. The first guide post 39 and the first guide hole 423 are pluggably connected. The provision of the first guide post 39 and the first guide hole 423 facilitates guiding the plugging of the first connecting assembly 30 and the second connecting assembly 40, improves the plugging accuracy of the first connecting assembly 30 and the second connecting assembly 40, and reduces plugging wear. Optionally, the first guide post 39 is provided on the first insulating portion 32, extending in the opposite direction of the first direction Z, and the first guide hole 423 is provided on the second insulating portion 42, and the first guide hole 423 is recessed from the surface of the second insulating portion 42 in the opposite direction of the first direction Z.

[0126] In one embodiment, the first guide post 39 is made of metal, which helps improve the structural rigidity of the first guide post 39 and reduces the risk of deformation of the first guide post 39 under stress. In one embodiment, the first guide post 39 and the first insulating portion 32 are integrally formed using an injection molding machine, which simplifies the assembly process and improves the stability of the first guide post 39 connected to the first insulating portion 32.

[0127] In one embodiment, the number of first guide posts 39 and first guide holes 423 is equal, and both are multiple, with each first guide post 39 being inserted into a first guide hole 423. Providing multiple pairs of first guide posts 39 and first guide holes 423 improves the guiding stability and accuracy of the first guide posts 39 and first guide holes 423, thereby improving the precision of the insertion between the first connecting assembly 30 and the second connecting assembly 40. Alternatively, the number of first guide posts 39 and first guide holes 423 may be two, with the two first guide posts 39 and first guide holes 423 spaced apart along the second direction Y, and the two first guide holes 423 spaced apart along the second direction Y.

[0128] In one embodiment, the first guide post 39 is located within the first surrounding portion 37 and extends beyond the first surrounding portion 37 and the first insulating portion 32 in a direction opposite to the first direction Z. When the first connecting assembly 30 and the second connecting assembly 40 approach each other in the first direction Z, the first guide post 39 first engages with the first guide hole 423 and then guides the first insulating portion 32 and the second insulating portion 42 for insertion. This helps improve the insertion accuracy of the first insulating portion 32 and the second insulating portion 42 and reduces wear on the first conductive portion 34 and the second conductive portion 41.

[0129] As shown in Figures 12, 13, 17 and 18, in one embodiment, the first bottom wall 121 also includes a first bottom surface 1212 and a first recess 1213, the first recess 1213 is recessed inwardly in the first bottom surface 1212 along the first direction Z, the first bottom wall through hole 1211 passes through the first recess 1213, and at least part of the first insulating portion 32, the first conductive portion 34 and the first surrounding portion 37 are located in the first recess 1213.

[0130] The second top wall 221 also includes a second top surface 2212 and a first protrusion 2213. The second top surface 2212 faces the first bottom surface 1212 along the first direction Z. The first protrusion 2213 extends from the second top surface 2212 along the first direction Z. The second top wall through hole 2211 passes through the first protrusion 2213. At least part of the second insulating portion 42 and the second conductive portion 41 extends from the first protrusion 2213 along the first direction Z.

[0131] When the first connecting component 30 and the second connecting component 40 are connected to each other, at least a portion of the first protrusion 2213, a portion of the second insulating portion 42, and at least a portion of the second conductive portion 41 are located in the first recess 1213, which helps reduce the risk of foreign matter entering through the gap between the first bottom surface 1212 and the second top surface 2212 and contacting the first connecting component 30 and the second connecting component 40, and helps extend the service life of the first connecting component 30 and the second connecting component 40.

[0132] In one embodiment, one of the first bottom surface 1212 and the second top surface 2212 is provided with a second guide post 2214, and the other of the first bottom surface 1212 and the second top surface 2212 is provided with a second guide hole 1214. The second guide post 2214 and the second guide hole 1214 are pluggably connected. The provision of the second guide post 2214 and the second guide hole 1214 facilitates guiding the first module 10 and the second module 20 closer together, thereby guiding the plugging of the first connecting assembly 30 and the second connecting assembly 40, further improving the plugging accuracy of the first connecting assembly 30 and the second connecting assembly 40 and reducing plugging wear. Optionally, the second guide post 2214 is provided on the second top wall 221 and extends from the second top surface 2212 along the first direction Z. The second guide hole 1214 is provided on the first bottom surface 1212 and penetrates the first bottom wall 121 along the first direction Z. Providing the second guide hole 1214 on the first bottom surface 1212 helps to reduce the risk of foreign matter entering the first space 127 through the second guide hole 1214 .

[0133] In one embodiment, the second guide post 2214 is made of metal, which helps to improve the structural rigidity of the second guide post 2214 and reduce the risk of deformation of the second guide post 2214. In one embodiment, the second guide post 2214 is connected to the second top wall 221 by welding, which helps to improve the stability of the second guide post 2214 connected to the second top wall 221.

[0134] In one embodiment, the number of second guide posts 2214 and second guide holes 1214 is equal, and both are multiple, with each second guide post 2214 plugged into one second guide hole 1214. Providing multiple pairs of second guide posts 2214 and second guide holes 1214 helps improve the guiding stability and accuracy of the second guide posts 2214 and second guide holes 1214, thereby improving the plugging accuracy of the first connecting assembly 30 and the second connecting assembly 40. Optionally, the number of second guide posts 2214 and second guide holes 1214 is two, and the two second guide posts 2214 are arranged at intervals along the second direction Y, and the two second guide holes 1214 are arranged at intervals along the second direction Y.

[0135] To sum up, in the battery system 100 of the present application, the first module 10 and the second module 20 are plug-connected through the first connecting component 30 and the second connecting component 40. The first connecting component 30 passes through the first gap 351 between the first limit member 33 and the first through hole 321, and the first insulating part 32 can move along the second direction Y relative to the first fixed part 31, thereby achieving a floating effect, which is beneficial to reducing the impact of the docking error between the first connecting component 30 and the second connecting component 40, and extending the service life of the first connecting component 30 and the second connecting component 40.

[0136] As shown in FIG19 , an embodiment of the present application further provides an electric device 200 , comprising the battery system 100 described in any one of the above embodiments.

[0137] In the electrical equipment 200 of the present application, the first module 10 and the second module 20 of the battery system 100 are plug-connected through the first connecting component 30 and the second connecting component 40. The first connecting component 30 enables the first insulating part 32 to move relative to the first fixed part 31 through the first gap 351 between the first limit member 33 and the first through hole 321, thereby achieving a floating effect, which is beneficial to reducing the impact of the docking error between the first connecting component 30 and the second connecting component 40, extending the service life of the first connecting component 30 and the second connecting component 40, and reducing the impact of the docking problem of the first connecting component 30 and the second connecting component 40 on the electrical equipment 200.

[0138] In one embodiment, the electric device 200 includes but is not limited to any one of a drone, an electric two-wheeled vehicle, an electric tool, and a robot.

[0139] In addition, those skilled in the art may also make other changes within the spirit of this application. Of course, these changes made according to the spirit of this application should be included in the scope disclosed in this application.

Claims

1. A first connecting component, characterized in that: include: A first fixing portion, configured to be fixedly connected to an external device, wherein the first fixing portion includes a first receiving portion; A first insulating portion having a first through hole, wherein the first fixing portion and the insulating portion are arranged along a first direction; a first limiting member, provided at the first through hole and the first receiving portion, wherein a first gap exists between the first limiting member and the first through hole, and the first gap is configured to allow the first insulating portion to move relative to the first fixing portion; A first conductive portion is provided on the first insulating portion, and the first conductive portion is configured to be connected to a second connecting component.

2. The first connection assembly according to claim 1, characterized in that: The first limiting member includes a first part and a second part, the first part is arranged on a side of the first insulating part away from the first receiving part; The first portion is configured to limit the separation of the first insulating portion and the first fixing portion, and the second portion passes through the first through hole and is fixed to the first receiving portion; The first gap exists between the second portion and the first through hole.

3. The first connection assembly according to claim 2, characterized in that: The second part includes a first connecting part and a second connecting part, the first connecting part connects the first part and the second connecting part; at least part of the first connecting part is located in the first through hole, the first gap is formed between the first connecting part and the first through hole, and the second connecting part is arranged in the first accommodating part.

4. The first connection assembly according to any one of claims 1 to 3, characterized in that: The first gap ranges from 0.3 mm to 5 mm.

5. The first connection assembly according to claim 4, characterized in that: The first gap ranges from 0.5 mm to 2 mm.

6. The first connection assembly according to claim 4, characterized in that: Along the second direction, the first gap ranges from 0.3 mm to 5 mm, and the second direction is perpendicular to the first direction.

7. The first connection assembly according to claim 4 or 6, characterized in that: Along a third direction, the first gap ranges from 0.3 mm to 5 mm, and the third direction is perpendicular to the first direction.

8. The first connection assembly according to any one of claims 2 to 3, characterized in that: The first insulating portion comprises a base portion, wherein the base portion is located between the first portion and the first fixing portion along the first direction, and the first through hole passes through the base portion; Along the first direction, the length of the base portion is L1, the length of the first connecting portion is L2, and L2 is greater than L1; The base is configured to be movable between the first portion and a first fixing portion along the first direction.

9. The first connection assembly according to claim 8, characterized in that: The difference between L2 and L1 ranges from 0.5mm to 2mm.

10. The first connection assembly according to any one of claims 1 to 9, characterized in that: The first connection component also includes: a first surrounding portion, connected to the first insulating portion, wherein the first surrounding portion surrounds at least a portion of the first insulating portion and the first conductive portion when viewed along the first direction; A first sealing member is at least partially disposed on an outer surface of the first surrounding portion, and the first sealing member is configured to connect the first surrounding portion and a second connecting component.

11. A first connecting component, characterized in that: include: A first fixing portion, configured to be fixedly connected to an external device, wherein the first fixing portion includes a first receiving portion; A first insulating portion having a first through hole, wherein the first fixing portion and the insulating portion are arranged along a first direction; A first limiting member, comprising a first portion and a second portion, wherein the first portion is disposed on a side of the first insulating portion away from the first receiving portion, the first portion being configured to limit the first insulating portion from being separated from the first fixing portion, and the second portion passing through the first through hole and being fixed to the first receiving portion; The first insulating portion comprises a base portion, wherein the base portion is located between the first portion and the first fixing portion along the first direction, and the first through hole passes through the base portion; Along the first direction, the length of the base is L1, the distance between the first portion and the first fixing portion is L2, L2 is greater than L1, and the base is configured to move between the first portion and the first fixing portion; A first conductive portion is provided on the first insulating portion, and the first conductive portion is configured to be connected to a second connecting component.

12. The first connection assembly according to claim 11, characterized in that: The difference between L2 and L1 ranges from 0.5 mm to 2 mm.

13. The first connection assembly according to claim 12, characterized in that: The difference between L2 and L1 ranges from 0.8 mm to 1.5 mm.

14. The first connection assembly according to any one of claims 11 to 13, characterized in that: A first gap exists between the first limiting member and the first through hole, and the first gap is configured to allow the first insulating portion to move relative to the first fixing portion.

15. The first connection assembly according to claim 14, characterized in that: The first gap ranges from 0.3 mm to 5 mm.

16. The first connection assembly according to claim 15, characterized in that: The first gap ranges from 0.5 mm to 2 mm.

17. The first connection assembly according to claim 15, characterized in that: Along the second direction, the first gap ranges from 0.3 mm to 5 mm, and the second direction is perpendicular to the first direction.

18. The first connection assembly according to claim 15 or 17, characterized in that: Along a third direction, the first gap ranges from 0.3 mm to 5 mm, and the third direction is perpendicular to the first direction.

19. A battery system, characterized in that: include: A first module, comprising a first battery cell module and a first shell, wherein the first shell is provided with a first space, the first battery cell module is arranged in the first space, the first shell comprises a first bottom wall, and the first bottom wall is provided with a first bottom wall through hole; The first connecting component according to any one of claims 1 to 18, wherein the first fixing portion is fixed to the first bottom wall, the first conductive portion is connected to the first battery cell module, and a portion of the first connecting component extends out of the first space through the first bottom wall through hole; A second module, comprising a second battery cell module and a second shell, wherein the second shell is provided with a second space, the second battery cell module is arranged in the second space, the second shell comprises a second top wall, along the first direction, the second top wall is arranged facing the first bottom wall, and the second top wall is provided with a second top wall through hole; The second connecting component is arranged on the second top wall and connected to the second battery core module. Part of the second connecting component extends out of the second space through the through hole of the second top wall. The second connecting component and the first connecting component are plug-connected.

20. An electrical equipment, characterized in that: Comprising the battery system as claimed in claim 19.

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