CN219286495U

CN219286495U - Sampling assembly, battery pack and power utilization device

Info

Publication number: CN219286495U
Application number: CN202223216876.9U
Authority: CN
Inventors: 王汉青; 刘卫朋; 宋梓翔
Original assignee: Suzhou Shidai Xin'an Energy Technology Co ltd
Current assignee: Suzhou Shidai Xin'an Energy Technology Co ltd
Priority date: 2022-12-01
Filing date: 2022-12-01
Publication date: 2023-06-30
Anticipated expiration: 2032-12-01

Abstract

The application relates to a sampling assembly, a battery pack and an electric device. Sampling assembly for the battery package, the battery package includes the busbar, sampling assembly includes: the sampling circuit board extends along the first direction. The connecting assembly comprises a first connecting piece and a second connecting piece, wherein the first connecting piece is detachably connected with the second connecting piece, the first connecting piece is used for being fixedly connected with the sampling circuit board, the second connecting piece is used for being fixedly connected with a busbar of the battery pack, and the first direction is intersected with the thickness direction of the sampling circuit board. The maintenance difficulty of sampling circuit board can be reduced, and the service life of battery package is improved.

Description

Sampling assembly, battery pack and power utilization device

Technical Field

The application relates to the technical field of batteries, in particular to a sampling assembly, a battery pack and an electric device.

Background

Currently, as the application range of the battery pack is becoming wider, the capacity demand of the battery pack is also becoming larger. The capacity of the battery pack can be enlarged by connecting a plurality of battery cells in series and in parallel, which are generally required to be connected in series and in parallel through a bus bar and a sampling circuit board.

In order to avoid serious safety influence caused by the separation between the sampling circuit board and the bus bar and the collision with other elements in the working process of the battery pack, the sampling circuit board and the bus bar can be fixed together in a welding mode. However, after the insurance in the sampling circuit board fuses or the sampling circuit board itself damages, can lead to the unable collection of a plurality of even battery monomer's data, consequently, need maintain or change sampling circuit board, and welded connected mode can lead to the maintenance degree of difficulty of sampling circuit board big, can't change even, and then leads to whole battery package unable use.

Disclosure of Invention

The sampling assembly, the battery pack and the power utilization device provided by the embodiment of the application can be convenient for fixing, replacing and maintaining the sampling circuit board.

In one aspect, according to an embodiment of the present application, there is provided a sampling assembly for a battery pack, the battery pack including a bus bar, the sampling assembly comprising: the sampling circuit board extends along the first direction. The connecting assembly comprises a first connecting piece and a second connecting piece, wherein the first connecting piece is detachably connected with the second connecting piece, the first connecting piece is used for being fixedly connected with the sampling circuit board, the second connecting piece is used for being fixedly connected with a busbar of the battery pack, and the first direction is intersected with the thickness direction of the sampling circuit board.

According to one aspect of an embodiment of the present application, at least a portion of the first connector is embedded in the second connector for coupling connection with each other.

According to one aspect of embodiments of the present application, the first connector includes a protrusion, and the second connector includes a recess recessed along its thickness, at least a portion of the protrusion being embedded in the recess.

According to an aspect of the embodiments of the present application, the first connecting piece includes a first connecting body portion and a first connecting portion that are connected along the second direction, the second connecting piece includes a second connecting body portion and a second connecting portion that are connected along the second direction, the first connecting portion and the second connecting portion are mutually clamped and arranged, and the first direction intersects with the second direction.

According to an aspect of embodiments of the present application, the first connection portion includes a first portion and a second portion connected in a second direction, the first portion is connected to the first connection body portion through the second portion, and the first portion and the first connection body portion at least partially protrude from the second portion in the first direction and form a first recess. The second connecting portion comprises a third portion and a fourth portion which are connected along the second direction, the third portion is connected with the second connecting body portion through the fourth portion, the third portion and the second connecting body portion at least partially protrude out of the fourth portion in the first direction and form a second concave portion, the first portion is arranged in the second concave portion, the third portion is arranged in the first concave portion, and the first direction and the second direction are intersected.

According to one aspect of embodiments of the present application, the connection assembly further comprises a third connection member, at least a portion of the first connection member being arranged in a stack with at least a portion of the second connection member, the first connection member and the second connection member being connected by the third connection member.

According to an aspect of the embodiments of the present application, the first connecting piece includes a first connecting hole, the second connecting piece includes a second connecting hole, and along a thickness direction, a projection of the first connecting hole and a projection of the second connecting hole are at least partially overlapped, and at least a portion of the third connecting piece extends into the first connecting hole and the second connecting hole.

According to one aspect of the embodiments of the present application, the third connector includes a slot into which the lamination area of the first connector and the second connector extends.

According to an aspect of embodiments of the present application, the third connecting member is located between the first connecting member and the second connecting member, and the third connecting member further includes at least one of an adhesive member and an absorbent member. Preferably, the first connecting piece and the second connecting piece are both sheet structures.

On the other hand, the embodiment of the application also provides a battery pack, which comprises battery cells, wherein a plurality of battery cells are sequentially arranged along a first direction. And the busbar is arranged at the top of the battery cells and is electrically connected with at least two battery cells. Including a sampling assembly as previously described. The sampling circuit board extends along a first direction and is in a strip-shaped structure, the connecting component extends from the sampling circuit board towards the bus bar, and the second connecting piece is connected with the bus bar.

On the other hand, the embodiment of the application also provides an electric device, which comprises the battery pack for providing electric energy.

In sampling subassembly, battery package and power consumption device that this embodiment provided, coupling assembling is fixed sampling circuit board on the busbar of battery package, when sampling circuit board insurance fuses or sampling circuit board receives external force damage, can dismantle first connecting piece in the coupling assembling from the second connecting piece for sampling circuit board and busbar separation, then it is fixed with the second connecting piece through first connecting piece with new sampling circuit board again, and then realize the change of sampling circuit board, reduce the maintenance degree of difficulty of sampling circuit board, improve the life of battery package.

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 illustration of a vehicle according to some embodiments of the present application;

FIG. 2 is an exploded view of a battery pack according to some embodiments of the present application;

FIG. 3 is a schematic top view of a sampling assembly according to some embodiments of the present disclosure;

FIG. 4 is a schematic cross-sectional view of a connection assembly of a sampling assembly according to some embodiments of the present disclosure;

FIG. 5 is a schematic cross-sectional view of a connection assembly of another sampling assembly according to some embodiments of the present application;

FIG. 6 is a schematic top view of a connection assembly of yet another sampling assembly provided in some embodiments of the present application;

FIG. 7 is a schematic view of a first connector of a further sampling assembly according to some embodiments of the present application;

FIG. 8 is a schematic view of a second connector of yet another sampling assembly according to some embodiments of the present application;

FIG. 9 is a schematic top view of a connection assembly of yet another sampling assembly provided in some embodiments of the present application;

FIG. 10 is a schematic cross-sectional view of the structure A-A of FIG. 9;

FIG. 11 is a schematic top view of a connection assembly of yet another sampling assembly provided in some embodiments of the present application;

FIG. 12 is a schematic cross-sectional view of the structure B-B of FIG. 11;

FIG. 13 is a schematic view of a view structure of a connection assembly of a further sampling assembly according to some embodiments of the present application;

fig. 14 is a schematic top view of a battery pack according to some embodiments of the present disclosure.

Marking:

1. a vehicle; 1000. a battery pack; 200. a battery cell; 300. a confluence assembly; 310. a busbar; 320. an insulating member;

100. a sampling assembly;

10. a sampling circuit board;

20. a connection assembly; 21. a first connector; 211. a protruding portion; 212. a first connection body portion; 213. a first connection portion; 213a, a first portion; 213b, a second part; 213c, a first recess; h1, a first connecting hole; 22. a second connector; 221. a recessed portion; 222. a second connection body portion; 223. a second connecting portion; 223a, a third section; 223b, fourth section; 223c, a second recess; 23. a third connecting member; h2, a second connecting hole; h3, clamping grooves;

x, a first direction; y, second direction.

In the drawings, like parts are designated with like reference numerals. The figures are not drawn to scale.

Detailed Description

Features and exemplary embodiments of various aspects of the present application are described in detail below to make the objects, technical solutions and advantages of the present application more apparent, and to further describe the present application in conjunction with the accompanying drawings and the detailed embodiments. It should be understood that the specific embodiments described herein are intended to be illustrative of the application and are not intended to be limiting. It will be apparent 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 examples of the present application.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.

In the embodiments of the present application, the same reference numerals denote the same components, and in the interest of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, etc. dimensions of the various components in the embodiments of the present application, as well as the overall thickness, length, width, etc. dimensions of the integrated device, are illustrative only and should not be construed as limiting the present application in any way.

The term "plurality" as used herein refers to more than two (including two).

In the present application, the battery cells may include lithium ion secondary battery cells, lithium ion primary battery cells, lithium sulfur battery cells, sodium lithium ion battery cells, sodium ion battery cells, or magnesium ion battery cells, and the embodiment of the present application is not limited thereto. The battery cells may be cylindrical, flat, rectangular, or otherwise shaped, as well as the embodiments herein are not limited in this regard. The battery cells are generally classified into three types according to the packaging method: the cylindrical battery cell, the square battery cell and the soft pack battery cell are not limited thereto.

References to a battery pack in embodiments of the present application refer to a single physical module that includes one or more battery cells to provide higher voltage and capacity. The battery pack generally includes a case for enclosing one or more battery cells. The case body can prevent liquid or other foreign matters from affecting the charge or discharge of the battery cells.

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 convenience of explanation, the following examples will be described taking an electric device as an example of a vehicle. In one aspect, the sampling assembly according to an embodiment of the present application is described in detail below in conjunction with fig. 1-14.

Fig. 1 is a schematic structural diagram of a vehicle according to some embodiments of the present application. Fig. 2 is an exploded view of a battery pack according to some embodiments of the present application.

As shown in fig. 1 and 2, the battery pack 1000 is provided inside the vehicle 1, and the battery pack 1000 may be provided at the bottom or the head or the tail of the vehicle 1. The battery pack 1000 may be used for power supply of the vehicle 1, for example, the battery pack 1000 may serve as an operating power source of the vehicle 1.

In some embodiments of the present application, the battery pack 1000 may not only serve as an operating power source for the vehicle 1, but also as a driving power source for the vehicle 1, providing driving power for the vehicle 1 instead of or in part instead of fuel oil or natural gas.

In the battery pack 1000, the number of battery cells 200 may be one or more. If the number of the battery cells 200 is plural, the plurality of battery cells 200 may be connected in series or parallel or a series-parallel connection, and the series-parallel connection refers to that the plurality of battery cells 200 are connected in series or parallel. The plurality of battery cells 200 can be directly connected in series or in parallel or in series-parallel, and then the whole formed by the plurality of battery cells 200 is accommodated in the box body; of course, the plurality of battery cells 200 may be connected in series or parallel or series-parallel to form a battery module, and the plurality of battery modules may be connected in series or parallel or series-parallel to form a whole and be accommodated in the case, and in some battery packs 1000, the battery module is omitted, the plurality of battery cells 200 are directly integrated in the case, and then the plurality of battery packs 1000 are connected in series or parallel or series-parallel to form a whole.

Fig. 3 is a schematic top view of a sampling assembly according to some embodiments of the present disclosure.

As shown in fig. 2 and 3, embodiments of the present application provide a sampling assembly 100 for a battery pack 1000. The battery pack 1000 includes a bus bar 310. The sampling assembly 100 includes a sampling circuit board 10 and a connection assembly 20. The sampling circuit board 10 is disposed to extend in the first direction X. The connection assembly 20 includes a first connection member 21 and a second connection member 22, the first connection member 21 and the second connection member 22 are detachably connected, the first connection member 21 is fixedly connected with the sampling circuit board 10, the second connection member 22 is fixedly connected with the bus bar 310 of the battery pack 1000, and the first direction X intersects the thickness direction of the sampling circuit board 10.

In the embodiment of the present application, as shown in fig. 2, the battery pack 1000 includes the battery cell 200 and the bus bar assembly 300. The plurality of battery cells 200 are sequentially disposed in the first direction X, and the bus bar assembly 300 is disposed on top of the battery cells 200 and electrically connects at least two battery cells 200 such that the plurality of battery cells 200 connected by one bus bar 310 are connected in series or parallel to each other.

The sampling circuit board 10 is disposed on top of the battery cells 200 along the first direction X, and the extending direction of the sampling circuit board 10 is the same as the arrangement direction of the plurality of battery cells 200. The connection assembly 20 includes a first connection member 21 and a second connection member 22. The first connector 21 is connected to the sampling circuit board 10, and the second connector 22 is connected to the bus bar 310. Alternatively, the first connector 21 is solder-connected to the sampling circuit board 10, and the second connector 22 is solder-connected to the bus bar 310. And the first connecting piece 21 and the second connecting piece 22 are detachably connected, so that the sampling circuit board 10 and the busbar 310 can be separated, and the replacement difficulty of the sampling circuit board 10 in the sampling assembly 100 is reduced.

The disassembly method of the first connector 21 and the second connector 22 in the connector assembly 20 is not particularly limited in the embodiment of the present application. The first connector 21 and the second connector 22 may be detachably connected by riveting, plugging, clamping, bonding, or the like. Alternatively, the materials of the first connecting member 21 and the second connecting member 22 may be conductive metals such as nickel, copper, and the like. Preferably, the material of the first connecting member 21 and the second connecting member 22 is nickel.

In the connection assembly 20 in the embodiment of the application, when the sampling circuit board 10 is fused or the sampling circuit board 10 is damaged by external force, the sampling circuit board 10 cannot collect the data of the battery cell 200. Because the first connecting piece 21 and the second connecting piece 22 can be detached, when the sampling circuit board 10 is damaged, the damaged sampling circuit board 10 and the first connecting piece 21 can be detached from the battery pack 1000, so that the sampling circuit board 10 is separated from the bus bar 310, the difficulty of detaching the damaged sampling circuit board 10 is reduced, and the possibility of damaging other components in the battery pack 1000 in the detaching process is reduced. After the disassembly, the second connecting piece 22 connected with the busbar 310 can be used again, and the new sampling circuit board 10 is connected with the second connecting piece 22 through the new first connecting piece 21, so that the new sampling circuit board 10 is replaced into the battery pack 1000, the sampling assembly 100 is ensured to normally execute the collection work, the maintenance difficulty of the sampling circuit board 10 is reduced, and the service life of the battery pack 1000 is prolonged.

Fig. 4 is a schematic cross-sectional structure of a connection assembly of a sampling assembly according to some embodiments of the present disclosure. Fig. 5 is a schematic cross-sectional structure of a connection assembly of another sampling assembly according to some embodiments of the present application.

As an alternative embodiment, at least part of the first connector 21 is embedded in the second connector 22 for coupling connection with each other, as shown in fig. 4 and 5. It will be appreciated that there are a variety of ways in which the first connector 21 may be embedded in the second connector 22. The first connecting piece 21 has one or more protruding structures, the second connecting piece 22 has a corresponding recessed structure, the protruding structures can extend into the recessed structures, the protruding structures are clamped in the recessed structures in an interference connection manner, and then the connection between the first connecting piece 21 and the second connecting piece 22 is achieved, and the protruding structures can be broken when the first connecting piece 21 and the second connecting piece 22 are detached, so that the first connecting piece 21 and the second connecting piece 22 are separated. Of course, the second connecting member 22 may have a through hole, the protruding structure of the first connecting member 21 protrudes into the through hole and a part of the structure is exposed from the other side of the second connecting member 22, the exposed protruding structure is deformed, the deformed portion is coupled with the other side of the second connecting member 22, so as to achieve connection of the first connecting member 21 and the second connecting member 22, and the deformed portion may be broken or removed when detached, thereby separating the first connecting member 21 from the second connecting member 22.

With continued reference to fig. 4 and 5, as an alternative embodiment, the first connecting member 21 includes a protrusion 211, and the second connecting member 22 includes a recess 221 recessed along its thickness, at least a portion of the protrusion 211 being embedded in the recess 221.

The present embodiment does not particularly limit the convex portion 211 and the concave portion 221 of the connection region of the first connection member 21 and the second connection member 22. As shown in fig. 4, the first connecting member 21 and the second connecting member 22 may have a sheet structure, and a portion of the first connecting member 21 is bent to form a protruding portion 211, and a portion of the second connecting member 22 is bent to form a recessed portion 221 matching with the protruding portion 211, so that a portion or even all of the protruding portion 211 can be embedded into the recessed portion 221, thereby connecting the first connecting member 21 and the second connecting member 22. Of course, as shown in fig. 5, the second connection member 22 may have a certain thickness, and a recess area is formed by recessing one side of the second connection member 22 connected with the first connection member 21, and the protrusion 211 of the first connection member 21 is embedded into the recess area, thereby realizing connection between the first connection member 21 and the second connection member 22. The connection region between the second connector 22 and the first connector 21 may be a lamination region between the first connector 21 and the second connector 22 after the first connector 21 and the second connector 22 are laminated. Alternatively, the first connecting member 21 and the second connecting member 22 are disposed side by side along the first direction X, and then the connection area of the first connecting member 21 and the second connecting member 22 is the contact area of the first connecting member 21 and the second connecting member 22.

Fig. 6 is a schematic top view of a connection assembly of another sampling assembly according to some embodiments of the present disclosure. Fig. 7 is a schematic structural view of a first connector of a further sampling assembly according to some embodiments of the present application. Fig. 8 is a schematic structural view of a second connector of a further sampling assembly according to some embodiments of the present application.

As shown in fig. 3, 6, 7 and 8, as an alternative embodiment, the first connector 21 includes a first connection body portion 212 and a first connection portion 213 connected in the second direction Y, and the second connector 22 includes a second connection body portion 222 and a second connection portion 223 connected in the second direction Y, and the first connection portion 213 and the second connection portion 223 are disposed to be engaged with each other, and the first direction X intersects the second direction Y.

In some alternative embodiments, the first connector 21 includes a first body portion and a first connection portion 213 connected along the second direction Y, the first connection portion 213 may be connected to the sampling circuit board 10, the first connection portion 213 may be snapped with a second connection portion 223 of the second connector 22, and a second connection body portion 222 of the second connector 22 may be connected to the bus bar 310. It should be understood that the manner in which the first connection portion 213 and the second connection portion 223 are engaged with each other includes various manners, and exemplary manners in which the first connection portion 213 has a recess along the width direction of the first connection member 21, and the end of the first connection portion 213 opposite to the first connection body portion 212 extends along the width direction of the first connection member 21, such that the recess is between the extension region and the first connection body portion 212, the second connection portion 223 is matched with the structure of the first connection portion 213, such that the extension region of the first connection portion 213 extends into the recess of the second connection portion 223, and the extension region of the second connection portion 223 extends into the recess of the first connection portion 213, such that the first connection portion 213 and the second connection portion 223 are engaged with each other, thereby connecting the first connection member 21 and the second connection member 22. Of course, the first connecting member 21 and the second connecting member 22 may have other fastening structures, so that the first connecting portion 213 and the second connecting portion 223 may be fastened to each other. The first connecting piece 21 and the second connecting piece 22 are connected through the mode of mutual joint for the connection of first connecting piece 21 and second connecting piece 22 is more stable, thereby reduces the battery package 1000 and produces the possibility that rocks and lead to the poor connection of first connecting piece 21 and second connecting piece 22 even separation in the course of the work.

With continued reference to fig. 3, 6, 7 and 8, as an alternative embodiment, the first connection portion 213 includes a first portion 213a and a second portion 213b connected along the second direction Y, the first portion 213a is connected to the first connection body portion 212 through the second portion 213b, and the first portion 213a and the first connection body portion 212 at least partially protrude from the second portion 213b in the first direction X and form a first recess 213c. The second connection portion 223 includes a third portion 223a and a fourth portion 223b connected along the second direction Y, the third portion 223a is connected to the second connection body portion 222 through the fourth portion 223b, the third portion 223a and the second connection body portion 222 at least partially protrude from the fourth portion 223b in the first direction X and form a second concave portion 223c, the first portion 213a is disposed in the second concave portion 223c, the third portion 223a is disposed in the first concave portion 213c, and the first direction X intersects the second direction Y.

The first connection body portion 212 of the first connection member 21 and the second portion 213b and the first portion 213a of the first connection portion 213 are sequentially disposed along the second direction Y. The cross-sectional area of the second portion 213b is smaller than the cross-sectional area of the first connection body portion 212 and also smaller than the cross-sectional area of the first portion 213a, such that the first portion 213a and the first connection body portion 212 protrude from the second portion 213b in the first direction X, such that not only the second portion 213b but also the first recess 213c are provided between the first portion 213a and the first connection body portion 212. Similarly, the second connecting portion 223 of the second connecting member 22 is configured to match the first connecting portion 213 of the first connecting member 21, such that the first portion 213a of the first connecting member 21 is located in the second recess 223c of the second connecting member 22, and the third portion 223a of the second connecting member 22 is located in the first recess 213c of the first connecting member 21, thereby forming a snap-fit connection between the first connecting portion 213 and the second connecting portion 223 of the first connecting member 21. In the disassembly process, since the sampling circuit board 10 is damaged, the first connection part 213 and the second connection part 223 can be separated by rotating about the connection part of the first connection part 21 and the sampling circuit board 10 as a pivot point, and the damaged sampling circuit board 10 can be taken out.

It can be understood that the first concave portion 213c, the first portion 213a, and the second portion 213b on the first connecting member 21 and the second concave portion 223c, the third portion 223a, and the fourth portion 223b on the first connecting member 21 may have the same size, but of course, the shapes may also be the same and the same, so that the first portion 213a on the first connecting member 21 and the second connecting member 22 may be engaged, and the third portion 223a on the second connecting member 22 may be engaged with the first connecting member 21.

Fig. 9 is a schematic top view of a connection assembly of another sampling assembly according to some embodiments of the present disclosure. Fig. 10 is a schematic cross-sectional view of A-A in fig. 9. Fig. 11 is a schematic top view of a connection assembly of another sampling assembly according to some embodiments of the present disclosure. Fig. 12 is a schematic cross-sectional view of the structure B-B of fig. 11.

As shown in fig. 9 to 12, as an alternative embodiment, the connection assembly 20 further includes a third connection member 23, at least a portion of the first connection member 21 is stacked with at least a portion of the second connection member 22, and the first connection member 21 and the second connection member 22 are connected by the third connection member 23.

Alternatively, the first connector 21 and the second connector 22 may be stacked such that the first connector 21 is located on the second connector 22. Alternatively, the second connector 22 is located on the first connector 21.

Alternatively, the third connecting member 23 may be connected to the first connecting member 21 and the second connecting member 22 by sandwiching the lamination area of the first connecting member 21 and the second connecting member 22. Alternatively, the third connector 23 may penetrate through the lamination area of the first connector 21 and the second connector 22 to achieve connection of the first connector 21 and the second connector 22. Alternatively, the third connecting member 23 may be located between the first connecting member 21 and the second connecting member 22, where the third connecting member 23 generates opposing forces on the first connecting member 21 and the second connecting member 22, so as to connect the first connecting member 21 and the second connecting member 22. The first connecting member 21 and the second connecting member 22 are connected by the third connecting member 23, and the third connecting member 23 can be removed or broken during the disassembly process, thereby achieving separation between the first connecting member 21 and the second connecting member 22. Alternatively, the material of the third connecting member 23 may include an insulating material, a conductive material, a composite material, or other materials.

As an alternative embodiment, as shown in fig. 9 and 10, the first connecting member 21 includes a first connecting hole h1, the second connecting member 22 includes a second connecting hole h2, and the projection of the first connecting hole h1 and the projection of the second connecting hole h2 are at least partially overlapped in the thickness direction, and at least part of the third connecting member 23 extends into the first connecting hole h1 and the second connecting hole h 2.

Optionally, at least one of the first connecting hole h1 and the second connecting hole h2 includes threads, and the portions of the third connecting piece 23 extending into the first connecting hole h1 and the second connecting hole h2 are also provided with threads, so that the third connecting piece 23 is screwed into the first connecting hole h1 and the second connecting hole h 2. It will be appreciated that the dimensions of the first and second connection holes h1 and h2 may be the same or different, and that when the dimensions of the first and second connection holes h1 and h2 are different, the small-bore connector is placed below the large-bore connector, and the small-bore connector is threaded to ensure that the third connector 23 can effectively connect the first and

second connectors

21 and 22. In the process of disassembly, the first connecting piece 21 and the second connecting piece 22 can be separated only by unscrewing the third connecting piece 23. Of course, an interference connection manner may be used, and taking the aperture of the first connection hole h1 and the aperture of the second connection hole h2 as an example, the diameters of the parts of the third connection piece 23 extending into the first connection hole h1 and the second connection hole h2 should be slightly larger than the apertures of the first connection hole h1 and the second connection hole h 2. It can be understood that the matching relationship between the third connecting member 23 and the first and second connecting holes h1 and h2 is not limited to the above scheme, and it can be ensured that the relative positions of the first and second connecting

members

21 and 22 are preset when the battery pack 1000 receives an external force during operation after the third connecting member 23 extends into the first and second connecting holes h1 and h 2.

As shown in fig. 11 and 12, as an alternative embodiment, the third connector 23 includes a clamping groove h3, and the lamination area of the first connector 21 and the second connector 22 extends into the clamping groove h 3.

Alternatively, the laminated region of the first connecting member 21 and the second connecting member 22 may entirely extend into the card slot h3 in the width direction. Or the lamination area of the first connector 21 and the second connector 22 may partially protrude into the card slot h3 in the width direction.

In some alternative embodiments, the clamping groove h3 of the third connecting piece 23 and the second connecting piece 22 may be fixedly connected, for example, the second connecting piece 22 is welded in the clamping groove h3 of the third connecting piece 23, when the sampling circuit board 10 is replaced, the first connecting piece 21 is withdrawn from the clamping groove h3, the first connecting piece 21 and the damaged sampling circuit board 10 are simultaneously taken out, and a new first connecting piece 21 extends into the clamping groove h3, so that the sampling circuit board 10 is replaced. It can be understood that the clamping structure of the third connecting piece 23 and the first connecting piece 21 and the second connecting piece 22 is not limited to the above scheme, and different clamping structures can be adopted according to the product requirement, so that the third connecting piece 23 can clamp the first connecting piece 21 and the second connecting piece 22 in the normal working process of the sampling circuit board 10.

Fig. 13 is a schematic view of a view structure of a connection assembly of another sampling assembly according to some embodiments of the present application.

As shown in fig. 13, as an alternative embodiment, the third connecting member 23 is located between the first connecting member 21 and the second connecting member 22, and the third connecting member 23 further includes at least one of an adhesive member and an absorbent member.

In some alternative embodiments of the present application, the third connecting member 23 may further comprise an adhesive member, such as an adhesive glue, an adhesive tape, or the like. Of course, the third connection member 23 may also comprise an absorbing member, such as a magnetic member or a magnetic material coated on the area between the first connection member 21 and the second connection member 22, to achieve the connection between the first connection member 21 and the second connection member 22.

The first connecting piece 21 and the second connecting piece 22 are connected in a mode that the third connecting piece 23 is arranged between the first connecting piece 21 and the second connecting piece 22, in the disassembling process, only the third connecting piece 23 or the first connecting piece 21 is required to be disassembled, and in the replacing process, a new third connecting piece 23 or the first connecting piece 21 is used for connecting with the second connecting piece 22.

As shown in fig. 13, as an alternative embodiment, the first connecting member 21 and the second connecting member 22 are each in a sheet structure, so as to reduce the space occupied by the connecting assembly 20 in the sampling assembly 100 and improve the energy density of the battery pack 1000.

On the other hand, the embodiment of the application further provides a battery pack 1000, including the battery cells 200, and the plurality of battery cells 200 are sequentially arranged along the first direction X. The bus bar 310 is disposed on top of the battery cells 200 and electrically connects at least two battery cells 200. Including the sampling assembly 100 as previously described. The sampling circuit board 10 extends in the first direction X and has a bar-shaped structure, the connection assembly 20 extends from the sampling circuit board 10 toward the bus bar 310 and the second connection 22 is connected with the bus bar 310.

In some examples, in the battery pack 1000, the bus bar 310 can electrically connect the plurality of battery cells 200 to enable series or parallel connection or series-parallel connection between the plurality of battery cells 200. The buss bar 310 and the sampling assembly 100 are fixedly connected by an insulator 320. Optionally, the insulating member 320 is a sheet structure, and the sampling circuit board 10 and the insulating member 320 are fixed by thermocompression. Alternatively, the insulator 320 is a harness isolation plate.

On the other hand, the embodiment of the application also provides an electric device, which includes the battery pack 1000 as described above, where the battery pack 1000 is used for providing electric energy.

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 sampling assembly for a battery pack, the battery pack including a buss bar, the sampling assembly comprising:

the sampling circuit board is arranged in an extending way along the first direction;

the connecting assembly comprises a first connecting piece and a second connecting piece, wherein the first connecting piece is detachably connected with the second connecting piece, the first connecting piece is used for being fixedly connected with the sampling circuit board, the second connecting piece is used for being fixedly connected with a busbar of the battery pack, and the first direction is intersected with the thickness direction of the sampling circuit board.

2. The sampling assembly of claim 1, wherein at least a portion of the first connector is embedded in the second connector for coupling connection to one another.

3. The sampling assembly of claim 2, wherein the first connector comprises a protrusion and the second connector comprises a recess recessed along its thickness, at least a portion of the protrusion being embedded in the recess.

4. The sampling assembly of claim 1, wherein the first connector comprises a first connector body portion and a first connector portion connected in a second direction, the second connector comprises a second connector body portion and a second connector portion connected in the second direction, the first connector portion and the second connector portion are disposed in a snap fit relationship with each other, and the first direction intersects the second direction.

5. The sampling assembly of claim 4, wherein the first connection portion comprises a first portion and a second portion connected along the second direction, the first portion being connected to the first connection body portion by the second portion, the first portion and the first connection body portion at least partially protruding from the second portion in the first direction and forming a first recess;

the second connecting portion comprises a third portion and a fourth portion which are connected along the second direction, the third portion is connected with the second connecting body portion through the fourth portion, the third portion and the second connecting body portion at least partially protrude out of the fourth portion in the first direction and form a second concave portion, the first portion is arranged in the second concave portion, the third portion is arranged in the first concave portion, and the first direction and the second direction are intersected.

6. The sampling assembly of claim 1, further comprising a third connector, at least a portion of the first connector being disposed in a stack with at least a portion of the second connector, the first connector and the second connector being connected by the third connector.

7. The sampling assembly of claim 6, wherein the first connector comprises a first connector aperture and the second connector comprises a second connector aperture, wherein a projection of the first connector aperture and a projection of the second connector aperture are disposed at least partially overlapping in a thickness direction, and wherein at least a portion of the third connector extends into the first connector aperture and the second connector aperture.

8. The sampling assembly of claim 6, wherein the third connector comprises a slot into which the region of the first connector and the second connector overlap.

9. The sampling assembly of claim 6, wherein the third connector is located between the first connector and the second connector, the third connector further comprising at least one of an adhesive and an absorbent member;

preferably, the first connecting piece and the second connecting piece are both sheet structures.

10. A battery pack, comprising:

the battery cells are sequentially arranged along the first direction;

the busbar is arranged at the top of the battery cells and is electrically connected with at least two battery cells;

comprising a sampling assembly according to any one of claims 1 to 9, the sampling circuit board extending in the first direction and being in a bar-like configuration, the connection assembly extending from the sampling circuit board towards the busbar and the second connection being connected with the busbar.

11. An electrical device comprising the battery pack of claim 10 for providing electrical energy.