CN219286576U

CN219286576U - Panel assembly, battery box and battery pack

Info

Publication number: CN219286576U
Application number: CN202320393099.0U
Authority: CN
Inventors: 王进军; 李波; 谢腾飞
Original assignee: Suzhou Shidai Xin'an Energy Technology Co ltd
Current assignee: Suzhou Shidai Xin'an Energy Technology Co ltd
Priority date: 2023-03-06
Filing date: 2023-03-06
Publication date: 2023-06-30
Anticipated expiration: 2033-03-06

Abstract

The application relates to a panel component, battery box and battery package, panel component are used for the battery box, including connecting portion and grafting portion. The connecting portion comprises a connecting body and a containing cavity recessed along the height direction of the connecting body, and the containing cavity penetrates through the connecting body in the thickness direction. The shape of the plug-in part is matched with that of the accommodating cavity and is arranged in the accommodating cavity. One of the connecting part and the plugging part is provided with a positioning groove, and the other one is provided with a positioning piece, and the positioning piece is matched with the positioning groove in shape and is clamped in the positioning groove so as to fix the relative position of the connecting part and the plugging part. The embodiment of the application can be favorable for assembly and positioning, and improves the assembly precision and the product quality.

Description

Panel assembly, battery box and battery pack

Technical Field

The application relates to the technical field of display, in particular to a panel assembly, a battery box body and a battery pack.

Background

Currently, battery cells are widely used in electronic devices such as cellular phones, notebook computers, battery cars, electric vehicles, electric airplanes, electric ships, electric toy vehicles, electric toy ships, electric toy airplanes, electric tools, and the like. The battery cells may include cadmium-nickel battery cells, hydrogen-nickel battery cells, lithium ion battery cells, secondary alkaline zinc-manganese battery cells, and the like.

With the development of electronic devices, the requirements for the battery case of the battery are also increasing. The traditional battery box body is generally connected with other connecting components on the battery box body by adopting a welding mode, and in the processing technology, the flatness of the same matching plane of the connector panel and the other connecting components is poor, so that the precision requirement of the function of the battery pack cannot be met.

Disclosure of Invention

The embodiment of the utility model provides a panel assembly, a battery box body and a battery pack, which are beneficial to assembly and positioning and improve assembly precision and product quality.

In one aspect, according to an embodiment of the present application, there is provided a panel assembly for a battery case, the panel assembly including: the connecting part comprises a connecting body and a containing cavity recessed along the height direction of the connecting body, and the containing cavity is penetrated in the thickness direction of the connecting body; the plug-in part is matched with the shape of the accommodating cavity and is arranged in the accommodating cavity; one of the connecting part and the plugging part is provided with a positioning groove, and the other one is provided with a positioning piece, and the positioning piece is matched with the positioning groove in shape and is clamped in the positioning groove so as to fix the relative position of the connecting part and the plugging part.

According to an aspect of the embodiments of the present application, the connector portion is provided with a positioning member, and the connecting portion is provided with a positioning groove.

According to an aspect of the embodiments of the present application, the number of the positioning members includes two or more positioning members, the two or more positioning members are distributed at intervals along the periphery of the plugging portion, and each positioning member is in clamping fit with one of the positioning grooves.

According to an aspect of the embodiments of the present application, the positioning members are disposed in pairs, one of the positioning members disposed in pairs is disposed on one side of the connector portion along the length direction of the connection body, and the other of the positioning members disposed in pairs is disposed on the other side of the connector portion along the length direction.

According to an aspect of the embodiments of the present application, the centers of the positioning pieces provided in pairs have a height difference in the height direction.

According to an aspect of the embodiment of the application, the positioning piece comprises a protruding body and a limiting body, wherein the limiting body is arranged on one side of the protruding body in the thickness direction, the limiting body protrudes out of the periphery of the protruding body, and the protruding body stretches into the positioning groove and is abutted to the end face of the connecting body in the thickness direction.

According to an aspect of the embodiments of the present application, a groove depth of the positioning groove is smaller than or equal to a thickness of the connection body in a thickness direction.

According to an aspect of the embodiments of the present application, the panel assembly further includes a connection colloid, and the connection colloid fills in the gap between the connector and the connection body and fixedly connects the connector and the connection body.

On the other hand, according to the embodiment of the application, a battery box is provided, which comprises: a panel assembly as described above; and the substrate is connected with the panel assembly and surrounds the panel assembly to form an accommodating space.

In still another aspect, according to an embodiment of the present application, there is provided a battery pack including: a battery case as described above; and a battery cell accommodated in the accommodation space.

The embodiment of the application provides a panel component, battery box and battery package, panel component is used for the battery box and includes connecting portion and grafting portion. The connecting portion includes the connecting body and holds the chamber along connecting body's direction of height sunken, holds the chamber and runs through the setting at connecting body's thickness direction, through set up the constant head tank on one of connecting portion and grafting portion and set up the setting element on another to make setting element and constant head tank's shape assorted so that two joint cooperations, make grafting portion can set up in holding the intracavity and with connecting portion joint cooperation, easily assembly positioning, and do benefit to improvement assembly precision, thereby improve panel assembly's product quality.

Drawings

Features, advantages, and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

FIG. 1 is a schematic view of an exploded construction of a panel assembly according to one embodiment of the present application;

FIG. 2 is a front view of a connector in a panel assembly according to one embodiment of the present application;

fig. 3 is a rear view of a connector in a panel assembly according to one embodiment of the present application.

Wherein:

10-connecting part; 11-connecting a body; 111-a first wall; 112-a second wall; 12-a receiving cavity; 13-positioning grooves;

20-a plug-in part; 21-a positioning piece; 211-protrusions; 212-limiting body;

x-height direction; y-length direction; z-thickness direction.

Detailed Description

Features and exemplary embodiments of various aspects of the present application are described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by showing an example of the present application. In the drawings and the following description, at least some well-known structures and techniques are not shown in order to avoid unnecessarily obscuring the present application; also, the dimensions of some of the structures may be exaggerated for clarity. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

The directional terms appearing in the following description are all directions shown in the drawings and are not intended to limit the panel assembly, battery case, and battery pack of the present application. In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected. The specific meaning of the terms in the present application can be understood as appropriate by one of ordinary skill in the art.

The technical scheme described in the embodiment of the application is applicable to a battery pack and an electric device using the battery pack.

The electric device may be a vehicle, a mobile phone, a portable device, a notebook computer, a ship, a spacecraft, an electric toy, an electric tool, or the like. The vehicle can be a fuel oil vehicle, a fuel gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle or a range-extended vehicle; spacecraft including airplanes, rockets, space planes, spacecraft, and the like; the electric toy includes fixed or mobile electric toys, such as a game machine, an electric car toy, an electric ship toy, and an electric airplane toy; power tools include metal cutting power tools, grinding power tools, assembly power tools, and railroad power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete shakers, and electric planers, among others. The embodiment of the application does not limit the electric device in particular.

For a better understanding of the present application, the following describes in detail a panel assembly, a battery case, and a battery pack according to an embodiment of the application with reference to fig. 1 to 3.

Referring to fig. 1, a panel assembly for a battery case is provided in an embodiment of the present application, and includes a connection portion 10 and a plug portion 20. The connection portion 10 includes a connection body 11 and a housing chamber 12 recessed in a height direction X of the connection body 11, the housing chamber 12 penetrating in a thickness direction Z of the connection body 11. The connector 20 is matched to the shape of the accommodating chamber 12 and is disposed in the accommodating chamber 12. One of the connecting portion 10 and the plugging portion 20 has a positioning slot 13 and the other is provided with a positioning piece 21, and the positioning piece 21 is matched with the positioning slot 13 in shape and is clamped in the positioning slot 13 to fix the relative positions of the connecting portion 10 and the plugging portion 20.

The panel component provided by the embodiment of the application is provided with the positioning groove 13 on one of the connecting part 10 and the plugging part 20, and is provided with the positioning piece 21 on the other one, and the positioning piece 21 is matched with the shape of the positioning groove 13 so as to be clamped in the positioning groove 13, so that the plugging part 20 can be arranged in the accommodating cavity 12 and matched with the connecting part 10 in a clamping manner, the assembly positioning between the connecting part 10 and the plugging part 20 is facilitated, and the assembly precision can be improved, thereby improving the product quality of the panel component.

It can be understood that the positioning piece 21 and the positioning groove 13 are in clamping fit to connect the plug-in portion 20 and the connecting portion 10 into a whole, so that the problem that the conventional hot working connection mode causes deformation of the plug-in portion 20 and the connecting portion at the connecting position can be avoided, the panel assembly is ensured to have good flatness and not to deform, and the product quality of the panel assembly is improved.

Alternatively, the connecting portion 10 may have a positioning slot 13 thereon, and the plug portion 20 may be provided with a positioning member 21 matching the shape of the positioning slot 13, where the positioning member 21 is clamped in the positioning slot 13 to fix the relative positions of the connecting portion 10 and the plug portion 20. Of course, the connecting portion 10 may further be provided with a positioning member 21, and the connector portion 20 may have a positioning slot 13 matching the shape of the positioning member 21.

Alternatively, the number of the positioning members 21 may be set to one, two, or a plurality of positioning members. Accordingly, the number of the positioning slots 13 can be one or two, but also can be multiple, and only the shapes of the positioning pieces 21 and the positioning slots 13 are matched and can be clamped to fix the relative positions of the connecting part 10 and the plugging part 20.

The connection portion 10 includes a connection body 11 and a receiving chamber 12 recessed in a height direction X of the connection body 11, the receiving chamber 12 being provided through in a thickness direction Z of the connection body 11, it being understood that the receiving chamber 12 has an opening on one side in the height direction X and openings on both sides in the thickness direction Z.

Alternatively, when assembling the connection portion 10 and the socket portion 20, the socket portion 20 may be inserted into the accommodating cavity 12 from the opening of the accommodating cavity 12 on one side in the height direction X, at this time, the connection body 11 of the connection portion 10 is provided with one of the positioning member 21 and the positioning groove 13 on the side facing the accommodating cavity 12 in the height direction X, and the other one of the positioning member 21 and the positioning groove 13 is provided on the side of the socket portion 20 extending into the accommodating cavity 12 in the height direction X, and the positioning member 21 and the positioning groove 13 are matched in shape so that the positioning member 21 and the positioning groove 13 are in snap fit to assemble the connection portion 10 and the socket portion 20 into a whole.

Alternatively, the number of one of the positioning pieces 21 and the positioning grooves 13 provided at the side of the connection body 11 facing the accommodation chamber 12 in the height direction X may be set to one, two, or, of course, may be set to plural. Accordingly, the number of the other one of the positioning pieces 21 and the positioning grooves 13 provided on the side of the connector 20 extending into the accommodating chamber 12 in the height direction X may be set to one, two, or, of course, may be set to plural.

Alternatively, when assembling the connection part 10 and the socket part 20, the socket part 20 may be inserted into the accommodation chamber 12 from an opening on either side of the accommodation chamber 12 in the thickness direction Z along the thickness direction Z, at this time, the connection body 11 of the connection part 10 is provided with one of the positioning piece 21 and the positioning groove 13 toward at least one side of the accommodation chamber 12 in the length direction Y, and the socket part 20 is inserted into the accommodation chamber 12 in the thickness direction Z and provided with the other of the positioning piece 21 and the positioning groove 13 toward at least one side of the connection body 11, and the positioning piece 21 is matched with the shape of the positioning groove 13 so that the positioning piece 21 is snap-fitted with the positioning groove 13 to assemble the connection part 10 and the socket part 20 as a whole.

Alternatively, the number of one of the positioning pieces 21 and the positioning grooves 13 provided on at least one side of the connection body 11 toward the accommodation chamber 12 in the length direction Y may be set to one, two, or, of course, may be set to plural. Accordingly, the number of the other one of the positioning pieces 21 and the positioning grooves 13 provided at least one side of the connector 20 extending into the accommodation chamber 12 in the thickness direction Z and facing the connection body 11 may be set to one, two, or, of course, may be set to plural.

With continued reference to fig. 1, in some alternative embodiments, the connector 20 is provided with a positioning member 21, and the connector 10 is provided with a positioning slot 13.

Through the arrangement, the processing and manufacturing are facilitated, and the processing difficulty is reduced.

It is understood that the connector 20 in the panel assembly may be used as a passage for electrically connecting the internal electric component of the battery case with the external electric component, that is, the internal electric component may be electrically connected to the external electric component of the other side in the thickness direction Z through the connector 20. The connecting portion 10 may be configured to have a cavity structure along the length direction Y so as to be connected with the connector portion 20 and other components of the battery box, and by being configured to have a cavity structure, the structural strength is improved, and meanwhile, the cost is reduced so as to ensure the safety and the effectiveness of the electrical connection.

Therefore, the connecting portion 10 with the cavity structure is more beneficial to arranging the positioning groove 13, and only a groove body matched with the shape of the positioning piece 21 is needed to be arranged at the corresponding position of the connecting body 11. Accordingly, the connector 20 is more beneficial to arranging the positioning piece 21, and only the positioning piece 21 matched with the positioning groove 13 in shape is required to be arranged at the corresponding position of the connector 20.

Alternatively, the connector 20 and the positioning member 21 may be integrally formed, which is beneficial to improving the processing efficiency. Of course, the connector 20 and the positioning member 21 may be provided separately, and the connector 20 and the positioning member 21 may be formed in advance, and then the positioning member 21 may be disposed at a corresponding position of the connector 20.

For convenience of description, an example will be described below in which the positioning piece 21 is provided on the socket 20 and the positioning groove 13 is provided on the connection portion 10.

In some alternative embodiments, the number of the positioning members 21 includes two or more positioning members 21, and the two or more positioning members 21 are spaced along the periphery of the insertion portion 20, and each positioning member 21 is in snap fit with one of the positioning slots 13.

By this mode, the assembly precision between the connecting part 10 and the plugging part 20 is improved, the quality of the panel assembly is ensured, and the connection strength is improved.

Each positioning piece 21 is in clamping fit with one of the positioning grooves 13, that is, the number of the positioning pieces 21 is matched with the number of the positioning grooves 13, namely, the number of the positioning pieces 21 is two, the number of the positioning grooves 13 is also two, the number of the positioning pieces 21 is four, and the number of the positioning grooves 13 is also four. Through the arrangement, the certain locating piece 21 can be clamped and matched with one locating groove 13, and the assembly precision is improved better.

Alternatively, the number of the positioning members 21 and the positioning grooves 13 may be two, respectively, but may be plural.

Alternatively, two or more positioning members 21 may be distributed at equal intervals along the periphery of the connector 20, and of course, the positioning members may be arranged at intervals according to a certain rule, and only the positioning slots 13 and the positioning members 21 are required to be matched in position, so that the positioning members and the positioning members can be in clamping fit.

Optionally, the shapes of the two or more positioning pieces 21 may be the same, which is beneficial to reducing the processing difficulty, and of course, the two or more positioning pieces 21 may be different, which is beneficial to improving the positioning accuracy and the assembly accuracy, and only the positioning pieces 21 with different shapes need to be ensured to have the positioning grooves 13 which can be clamped and matched with the two or more positioning pieces.

Referring to fig. 1 to 3, in some alternative embodiments, the positioning members 21 are arranged in pairs, one of the positioning members 21 arranged in pairs is disposed on one side of the connector portion 20 along the length direction Y of the connection body 11, and the other one of the positioning members 21 arranged in pairs is disposed on the other side of the connector portion 20 along the length direction Y.

Through this mode setting, do benefit to the improvement assembly precision, simultaneously, still do benefit to and prevent that connecting portion 10 and grafting portion 20 from taking place the displacement along length direction Y, and then guarantee panel assembly's fail safe nature.

In the panel assembly provided in this embodiment, the connector 20 may be provided with a plurality of holes to connect the electrical components inside and outside the box, so that the area of the connector 10 may be reduced as much as possible in order to better arrange the connector 20 and make the overall layout more compact, and therefore, in some examples, the connector 10 may be configured as a U-shaped structure.

It can be understood that one of the positioning members 21 disposed in pairs is disposed on one side of the connector portion 20 along the length direction Y of the connecting body 11, and the other one is disposed on one side of the connector portion 20 along the length direction Y of the connecting body 11, so as to facilitate ensuring that the positioning slots 13 are all disposed at positions of the connecting portion 10 along the length direction Y, so that the bottoms of the U-shaped structures are prevented from having insufficient space for disposing the positioning slots 13, thereby reducing the connection strength, and further, the problem that the positioning members 21 are broken or even fail after being clamped with the positioning slots 13 can be avoided.

The positioning members 21 are provided in pairs, alternatively, the number of the positioning members 21 may be two, four, or, of course, six.

When the connector 10 and the connector 20 are assembled, the positioning piece 21 and the positioning groove 13 are provided along the longitudinal direction Y, so that the positioning piece 21 and the positioning groove 13 can be engaged with each other along the thickness direction Z, thereby assembling the connector 10 and the connector 20 together.

In some alternative embodiments, the centers of the positioning members 21 disposed in pairs have a height difference in the height direction X.

By the arrangement, the assembly precision and the positioning precision are improved.

It can be understood that one of the positioning members 21 disposed in pairs is disposed on one side of the connector 20 along the length direction Y of the connecting body 11, and the other is disposed on one side of the connector 20 along the length direction Y of the connecting body 11, such that the centers of the two have different height positions in the height direction X, and when the connecting portion 10 and the connector 20 are assembled, the positioning function can be better performed, and the positioning precision is higher, the assembly precision is higher, so as to ensure that the panel assembly has better quality.

With continued reference to fig. 1 to 3, in some alternative embodiments, the positioning element 21 includes a protrusion 211 and a limiting body 212, the limiting body 212 is disposed on one side of the protrusion 211 along the thickness direction Z, the limiting body 212 protrudes from the periphery of the protrusion 211, the protrusion 211 protrudes into the positioning slot 13, and the limiting body 212 abuts against an end surface of the connecting body 11 along the thickness direction Z.

By this arrangement, the displacement of the connecting portion 10 and the plug portion 20 in the thickness direction Z after the assembly is prevented, and the safety and reliability of the panel assembly are ensured.

Optionally, the thickness of the limiting body 212 is smaller than that of the protruding body 211, so as to ensure that the protruding body 211 and the positioning groove 13 are clamped with better strength, and further facilitate ensuring that two surfaces in the thickness direction Z have better flatness after the connecting portion 10 is connected with the plugging portion 20, thereby improving the product quality of the panel assembly.

Alternatively, the protruding body 211 and the limiting body 212 may be integrally formed, which is beneficial to improving the processing efficiency. Of course, the protruding body 211 and the limiting body 212 may be provided separately, and the protruding body 211 and the limiting body 212 may be formed in advance, and then assembled into the positioning member 21 along the thickness direction Z, and then the positioning member 21 is disposed at the corresponding position of the connector 20.

Alternatively, the sum of the thicknesses of the protruding body 211 and the stopper body 212 is smaller than the thickness of the socket 20 in the thickness direction Z, and of course, may be the same as the thickness of the socket 20.

In some alternative embodiments, the depth of the positioning groove 13 is less than or equal to the thickness of the connection body 11 in the thickness direction Z.

By this arrangement, the positioning accuracy is improved, the connector 20 is prevented from being displaced, and the safety and reliability of the panel assembly are further ensured.

Alternatively, the groove depth of the positioning groove 13 is smaller than the thickness of the connection body 11 in the thickness direction Z.

Illustratively, the connecting body 11 includes a first wall 111 and a second wall 112 disposed opposite in the width direction of the connecting body 11. The positioning groove 13 may be disposed on one of the first wall 111 and the second wall 112. That is, the positioning groove 13 is not provided in communication with the connection body 11 in the thickness direction Z.

Optionally, the positioning groove 13 is disposed on the first wall 111, when the connecting portion 10 is manufactured, the positioning groove 13 may be manufactured at a corresponding position of the first wall 111, when the plugging portion 20 is assembled to the accommodating cavity 12, a side of the plugging portion 20 facing the positioning groove 13 may extend into the accommodating cavity 12 along the thickness direction Z, after the assembly is completed, one side of the positioning member 21 along the thickness direction Z abuts against the second wall 112, the protruding body 211 abuts against a portion of the first wall 111 near the positioning groove 13, and both the second wall 112 and the protruding body 211 may prevent the displacement of the plugging portion 20 in the thickness direction Z, so that the safety and reliability of the panel assembly are better improved.

Of course, the positioning groove 13 may also be disposed on the second wall 112, and the specific embodiment is the same as that described above, and will not be described herein again.

Alternatively, the groove depth of the positioning groove 13 is equal to the thickness of the connection body 11 in the thickness direction Z, that is, the positioning groove 13 is not disposed in communication on the connection body 11 in the thickness direction Z.

When the connecting portion 10 is processed and manufactured, the positioning groove 13 can be formed in the corresponding positions of the first wall 111 and the second wall 112, when the plugging portion 20 is assembled to the accommodating cavity 12, the plugging portion 20 can extend into the accommodating cavity 12 along the thickness direction Z, and after the assembly is completed, the protruding body 211 abuts against the portion, close to the positioning groove 13, of the first wall 111 or the second wall 112, so that the displacement of the plugging portion 20 in the thickness direction Z is prevented, the safety and the reliability of the panel assembly are improved, and meanwhile, the assembly flexibility and the universality of the panel assembly are improved.

In some alternative embodiments, the panel assembly further includes a connection gel, which fills the gap between the connector 20 and the connection body 11 and fixedly connects the connector 20 and the connection body 11.

By arranging the connecting colloid, the connecting strength of the connecting part 10 and the plugging part 20 is improved better, and the safety and the reliability of the panel assembly are ensured.

Optionally, after the connector 20 is disposed in the accommodating cavity 12, a connecting colloid is disposed in a gap between the connector 11 and the connector 20, so that after the positioning piece 21 is clamped in the positioning slot 13, the connecting colloid fills a contact position between the connector 20 and the connector 11 and fixedly connects the two together.

In some alternative embodiments, the connector 20 includes a connector hole penetrating in the thickness direction Z of the connection body 11.

By this arrangement, it is advantageous to provide connection channels for the electrical components located on both sides of the connector portion 20 in the thickness direction Z, so as to ensure the reliability of the panel assembly.

Alternatively, the number of the jack holes may be set to one, two, or a plurality of jack holes. Alternatively, the number and shape of the jack holes may be designed according to the electrical components to be connected, which is not limited in this application.

The embodiment of the application also provides a battery box body, which comprises the panel assembly and the substrate provided by the embodiments, wherein the substrate is connected with the panel assembly and forms an accommodating space with the panel assembly in a surrounding manner.

The substrate may carry internal components in the battery, and illustratively, the substrate may carry a battery module, a domain controller, and the like.

Optionally, the battery case may further include a side beam assembly disposed at a peripheral side of the panel assembly to connect the panel assembly with the substrate. Through setting up the boundary beam subassembly, can play the inside effect of isolation battery, can also protect the inside subassembly of battery simultaneously, reduce the possibility that the inside subassembly of battery received the external impact.

The battery box provided by the embodiment of the application, because the battery box comprises the panel assembly which is beneficial to improving the assembly efficiency and improving the assembly precision and is provided by the embodiments, the assembly efficiency and the assembly precision of the battery box can be improved, and the battery box is guaranteed to have better quality.

The embodiment of the application also provides a battery pack, which comprises the battery box body and the battery monomer provided by the embodiment, wherein the battery monomer is accommodated in the accommodating space.

The battery pack provided by the embodiment of the application comprises the battery box body which is beneficial to improving the assembly efficiency and the assembly precision and has better quality, so that the battery pack can be better protected, and the safety and the reliability of the battery pack are ensured.

While the present application has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the present application. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims

1. A panel assembly for a battery compartment, the panel assembly comprising:

the connecting part comprises a connecting body and a containing cavity recessed along the height direction of the connecting body, and the containing cavity is penetrated in the thickness direction of the connecting body;

the plug-in part is matched with the shape of the accommodating cavity and is arranged in the accommodating cavity;

one of the connecting part and the plugging part is provided with a positioning groove, and the other one of the connecting part and the plugging part is provided with a positioning piece, and the positioning piece is matched with the positioning groove in shape and is clamped in the positioning groove so as to fix the relative position of the connecting part and the plugging part.

2. The panel assembly of claim 1, wherein the connector portion is provided with the positioning piece and the connector portion is provided with the positioning groove.

3. The panel assembly of claim 2, wherein the number of the positioning members includes two or more, the two or more positioning members being spaced apart along the periphery of the connector portion, each of the positioning members being in snap engagement with one of the positioning slots.

4. A panel assembly according to claim 3, wherein the positioning members are provided in pairs, one of the positioning members provided in pairs being provided on one side of the connector portion in the longitudinal direction of the connection body, and the other of the positioning members provided in pairs being provided on the other side of the connector portion in the longitudinal direction.

5. The panel assembly according to claim 4, wherein centers of the positioning members provided in pairs have a height difference in the height direction.

6. The panel assembly according to claim 2, wherein the positioning member comprises a protruding body and a limiting body, the limiting body is disposed on one side of the protruding body in the thickness direction, the limiting body protrudes out of the periphery of the protruding body, and the protruding body protrudes into the positioning groove and the limiting body is disposed in abutment with an end face of the connecting body in the thickness direction.

7. The panel assembly of claim 2, wherein a groove depth of the positioning groove is less than or equal to a thickness of the connection body in the thickness direction.

8. The panel assembly of claim 1, further comprising a connection gel filling a gap between the connector and the connection body and fixedly connecting the connector and the connection body.

9. A battery box, comprising:

the panel assembly of any one of claims 1 to 8;

and the base plate is connected with the panel assembly and surrounds the panel assembly to form an accommodating space.

10. A battery pack, comprising:

the battery case according to claim 9; and

and the battery cell is accommodated in the accommodating space.