CN217427021U

CN217427021U - A structure for battery sampling

Info

Publication number: CN217427021U
Application number: CN202220982493.3U
Authority: CN
Inventors: 宋海阳
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2022-04-25
Filing date: 2022-04-25
Publication date: 2022-09-13
Anticipated expiration: 2032-04-25

Abstract

The utility model provides a structure for battery sampling relates to the battery assembly field. The structure for sampling a battery is formed with a fixing part and an adjusting part connected to each other; the fixing portion comprises a plurality of first sub-busbars in a preset number, the adjusting portion comprises a second sub-busbar, and the first sub-busbars and the second sub-busbars are sequentially connected with each battery cell correspondingly along the arrangement direction of the battery cells. Therefore, when different battery pack sampling structures are designed, the design is not needed independently, and only a universal fixing part and an adjusting part which can be flexibly adjusted are used, so that the production cost is effectively reduced, and the production period is shortened.

Description

A structure for battery sampling

Technical Field

The application relates to the field of battery assembly, in particular to a structure for battery sampling.

Background

At present, a mode of stacking a plurality of battery cells in sequence in the length direction of a battery pack is generally adopted to arrange long and flat battery cells inside the battery pack, and the number of the battery cells can be distinguished according to the requirements of the collection number of different collection chips. For example, when a 14-channel chip is adopted, the number of the battery cells is 42-56; when 16-channel chips are adopted, the number of the battery cells is 48-64; and the specific number of the battery cells in the battery pack is not fixed, but needs to be determined according to actual conditions.

Each battery cell in the battery pack needs to be connected with the BMS slave board through a bus bar or other members so as to sample and detect the characteristics of each battery cell, such as temperature. At present, when designing a bus bar or the like, it is adopted to design one holder for connecting a plurality of bus bars from one end to the other end of a battery pack, or to provide two holders for connecting a plurality of bus bars from the middle section of the battery pack to both ends thereof. However, since the number of the battery cells in different battery packs is not fixed, the arrangement scheme of members such as the bus bar needs to be redesigned for the battery cells with different numbers, so that the production period is long and the production cost is high.

SUMMERY OF THE UTILITY MODEL

In view of the above, an object of the present application is to provide a structure for battery sampling, so as to solve the problems that the existing structure for battery sampling has no universality, and thus the growth cycle is long and the production cost is high.

According to the above object, the present invention provides a structure for battery sampling, which is provided in a battery pack provided with a plurality of cells arranged in sequence, wherein the structure for battery sampling is formed with a fixing portion and an adjusting portion connected to each other; the fixing portion comprises a plurality of first sub-busbars in a preset number, the adjusting portion comprises a second sub-busbar, and the first sub-busbars and the second sub-busbars are sequentially connected with each battery cell correspondingly along the arrangement direction of the battery cells.

Preferably, the fixing portion is close to a first end of the battery pack in the length direction, the adjusting portion is close to a second end of the battery pack in the length direction, and the arrangement direction of the plurality of battery cells is consistent with the length direction of the battery pack; each first sub-busbar and each second sub-busbar are respectively provided with a first connecting portion and a second connecting portion along the arrangement direction of the plurality of battery cells, and the first connecting portions and the second connecting portions are respectively correspondingly connected with the battery cells.

Preferably, the fixing portion includes a first inner layer mounting portion disposed along an arrangement direction of the plurality of battery cells, and the first inner layer mounting portion is located at a side portion of the first sub bus bar facing the battery pack.

Preferably, a first end of the first inner layer mounting part corresponds to a first connection part of the first sub bus bar close to the first end of the battery pack, and a second end of the first inner layer mounting part corresponds to a first connection part of the first sub bus bar far away from the first end of the battery pack.

Preferably, the first inner layer installation part is formed with a plurality of first avoidance holes corresponding to the battery cells.

Preferably, the fixing portion further includes a first sampling member, and a plurality of first sampling points corresponding to the battery cells connected to the first sub bus bar are formed on a side portion of the first sub bus bar facing away from the battery pack by the first sampling member.

Preferably, the fixing part is provided with a first outer layer mounting part on one side of the first sampling piece, which faces away from the battery pack, and the length of the first outer layer mounting part is the same as that of the first inner layer mounting part; first outer installation department be formed with a plurality of with first opening and a plurality of with first welding hole that the hole corresponds is dodged to first sampling point.

Preferably, the adjusting portion includes a second inner-layer mounting portion arranged along an arrangement direction of the plurality of battery cells, and the second inner-layer mounting portion is located on a side portion, facing the battery pack, of the second sub-busbar and the first inner-layer mounting portion;

a first end of the second inner-layer mounting part corresponds to a first end of the first inner-layer mounting part, and a second end of the second inner-layer mounting part corresponds to a second connecting part of the second sub bus bar close to a second end of the battery pack; the second inner installation part is provided with a plurality of second avoiding holes corresponding to the battery cells.

Preferably, the adjusting portion further includes a second sampling member, and a plurality of second sampling points corresponding to the battery cells connected to the second sub bus bar are formed on a side portion of the second sub bus bar facing away from the battery pack by the second sampling member.

Preferably, the adjusting portion is provided with a second outer layer mounting portion on a side of the second sampling member opposite to the battery pack, a first end of the second outer layer mounting portion corresponds to the second connecting portion of the first sub bus bar far away from the first end of the battery pack, and a second end of the second outer layer mounting portion corresponds to the second connecting portion of the second sub bus bar near the second end of the battery pack; the second outer installation department be formed with a plurality of with the second opening that the second sampling point corresponds and a plurality of with the second welding hole that the hole corresponds is dodged to the second.

According to the utility model discloses a structure for battery sampling, it includes fixed part and the regulating part of connecting each other; the first sub-busbars of the preset number of the fixing parts can be correspondingly connected with the electric cores of the fixed number, namely, the fixing parts are formed into standard parts which can be suitable for battery packs with different numbers of electric cores, and then the number of the second sub-busbars in the adjusting parts is correspondingly adjusted according to the specific number of the electric cores in the battery packs, so that the first sub-busbars and the second sub-busbars are sequentially connected with each electric core along the arrangement direction of the electric cores in the battery packs, and then the sampling of the battery packs is completed. Therefore, when the sampling structures are designed for different battery packs, the sampling structures do not need to be designed independently, and only a universal fixing part and an adjusting part which can be flexibly adjusted are used, so that the production cost is effectively reduced, and the production period is shortened.

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

To more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

Fig. 1 is a schematic diagram of a structure for battery sampling according to an embodiment of the present invention;

fig. 2 is a schematic view of a fixing part according to an embodiment of the present invention;

fig. 3 is an exploded view of a fixing part according to an embodiment of the present invention;

fig. 4 is a schematic view of the connection of the adjusting part and the fixing part according to an embodiment of the present invention;

fig. 5 is an exploded view of the connection of the adjustment part and the fixing part according to an embodiment of the present invention;

fig. 6 is a schematic view of a busbar according to an embodiment of the present invention.

Icon: 1-a battery pack; 10-electric core; 2-a fixed part; 20-a first sub-bus; 21-a first inner layer mount; 210-a first avoidance hole; 22-a first sampling member; 220-first sample point; 23-a first outer layer mounting section; 230-a first welding hole; 231 — a first opening; 3-an adjusting part; 30-a second sub-bus; 31-a second inner layer mount; 310-a second avoidance hole; 32-a second sampling member; 320-second sample point; 33-a second outer layer mount; 330-second welding hole; 331-a second opening; 41-a first connection; 42-second connection.

Detailed Description

The following detailed description is provided to assist the reader in obtaining a thorough understanding of the methods, devices, and/or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and/or systems described herein will be apparent to those skilled in the art in view of the disclosure of the present application. For example, the order of operations described herein is merely an example, which is not limited to the order set forth herein, but rather, may be changed in addition to operations that must occur in a particular order, as will be apparent upon an understanding of the present disclosure. Moreover, descriptions of features known in the art may be omitted for the sake of clarity and conciseness.

The features described herein may be embodied in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many possible ways to implement the methods, devices, and/or systems described herein that will be apparent after understanding the disclosure of the present application.

Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on," "connected to," coupled to, "over," or "overlying" another element, it may be directly "on," "connected to," coupled to, "over," or "overlying" the other element, or one or more other elements may be present therebetween. In contrast, when an element is referred to as being "directly on," "directly connected to," directly coupled to, "directly over" or "directly overlying" another element, there may be no intervening elements present.

As used herein, the term "and/or" includes any one of the associated listed items and any combination of any two or more of the items.

Although terms such as "first", "second", and "third" may be used herein to describe various elements, components, regions, layers or sections, these elements, components, regions, layers or sections should not be limited by these terms. Rather, these terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first member, component, region, layer or section discussed in the examples described herein could be termed a second member, component, region, layer or section without departing from the teachings of the examples.

For ease of description, spatial relationship terms such as "above … …," "upper," "below … …," and "lower" may be used herein to describe one element's relationship to another element as illustrated in the figures. Such spatial relationship terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "upper" relative to other elements would then be oriented "below" or "lower" relative to the other elements. Thus, the term "above … …" includes both an orientation of "above … …" and "below … …" depending on the spatial orientation of the device. The device may also be otherwise oriented (e.g., rotated 90 degrees or at other orientations) and the spatially relative terms used herein should be interpreted accordingly.

The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting of the disclosure. The singular forms also are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," and "having" specify the presence of stated features, quantities, operations, elements, components, and/or combinations thereof, but do not preclude the presence or addition of one or more other features, quantities, operations, components, elements, and/or combinations thereof.

Variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and/or tolerances, may be expected. Thus, the examples described herein are not limited to the particular shapes shown in the drawings, but include changes in shape that occur during manufacturing.

The features of the examples described herein may be combined in various ways that will be apparent after understanding the disclosure of the present application. Further, while the examples described herein have a variety of configurations, other configurations are possible, as will be apparent after understanding the disclosure of the present application.

As shown in fig. 1 to 5, the structure for battery sampling of the present embodiment includes a bus bar for correspondingly connecting each of the battery cells 10 inside the battery pack 1. Specifically, the structure includes a fixing portion 2 and an adjusting portion 3 connected to each other, the fixing portion 2 is provided with a predetermined number of first sub-busbars 20, the adjusting portion 3 is provided with an unpredicted number of second sub-busbars 30, and the first sub-busbars 20 and the second sub-busbars 30 are sequentially connected to each of the battery cells 10 in correspondence with each other in an arrangement direction of the plurality of battery cells 10 in the battery pack 1. Hereinafter, specific configurations of the above-described portions of the structure for battery sampling according to the present invention will be described in detail.

It should be noted that the predetermined number of the first sub-busbars 20 does not mean that the number thereof is a fixed value, and the number thereof is not limited in particular, for example, according to the content described in the background art, when 16-channel chips are adopted, that is, the number of the battery cells 10 is 48 to 64, preferably, the number of the first sub-busbars 20 in the fixing portion 2 is set to enable the fixing portion 2 to be correspondingly connected with 48 battery cells 10, so that the fixing portion 2 can be applied to the battery pack 1 no matter what the number of the battery cells 10 in the battery pack 1 is, that is, the fixing portion 2 is formed as a standard piece; when a 14-channel chip is adopted, that is, the number of the battery cells 10 is 42 to 56, it is preferable that the number of the first sub-bus bars 20 in the fixing portion 2 is set so that the fixing portion 2 can correspondingly connect 42 battery cells 10. Thus, when sampling the battery cells 10 in the battery pack 1, the following integrated fixing portion 2 may be directly connected to the battery pack 1, and then the number of the second sub bus bars 30 in the adjusting portion 3 may be flexibly adjusted according to the actual situation, that is, the number of the battery cells 10 not connected to the bus bars.

In addition, in the present embodiment, as shown in fig. 1, for convenience of clearly describing specific structures of the fixing portion 2 and the adjusting portion 3, the length direction of the battery pack 1 is set to be the arrangement direction of the battery cells 10, the first end of the battery pack 1 is the end close to the fixing portion 2, and the second end of the battery pack 1 is the end close to the adjusting portion 3. That is, the extending directions of the fixing part 2 and the adjusting part 3 are consistent with the length direction of the battery pack 1, the first end of the fixing part 2 corresponds to the first end of the battery pack 1, and the second end of the adjusting part 3 corresponds to the second end of the battery pack 1. Further, it should be noted that, as shown in fig. 1 and fig. 6, the bus bar (including the first sub bus bar 20 and the second sub bus bar 30) in the present embodiment is provided in a rectangular parallelepiped plate shape, and is formed with a first connection portion 41 and a second connection portion 42 respectively along the arrangement direction of the battery cells 10, and the first connection portion 41 and the second connection portion 42 are respectively connected to the battery cells 10 correspondingly, so as to facilitate the sampling and detection of the battery cells 10 by a sampling member described below. That is, each busbar in the present embodiment connects two battery cells 10 correspondingly through the first connection portion 41 and the second connection portion 42, and the battery cell 10 connected to the first connection portion 41 on the same busbar is closer to the first end of the battery pack 1 than the battery cell 10 connected to the second connection portion 42.

In the present embodiment, as shown in fig. 1 to 3, the fixing portion 2 includes a plurality of first sub-busbars 20 of a predetermined number, a first sampling piece 22 for sampling the battery cells 10, and a first inner layer mounting portion 21 and a first outer layer mounting portion 23 for integrally connecting and fixing the plurality of first sub-busbars 20 and the first sampling piece 22 to the battery pack 1. As shown in fig. 3, the first inner layer mounting part 21 is formed in a rectangular parallelepiped plate shape, and the first inner layer mounting part 21 is provided at a side portion of the first sub bus bar 20 facing the battery pack 1, and has a length direction identical to an arrangement direction of the battery cells 10 in the battery pack 1, thereby facilitating the first inner layer mounting part 21 to integrate the plurality of first sub bus bars 20 into an integrated structure, and further facilitating connection between the fixing part 2 as a whole and the battery pack 1.

Note that, the side of the first sub bus bar 20 facing the battery pack 1 means: a side portion where the first sub bus bar 20 is connected to the battery pack 1 after the fixing portion 2 is connected to the battery pack 1; the side of the first sub-bus bar 20 facing away from the battery pack 1 is referred to as: the first sub bus bar 20 is provided at a side opposite to a side thereof facing the battery pack 1.

In addition, in the present embodiment, as shown in fig. 2 to 3, the first end of the first inner layer mounting portion 21 corresponds to the first connecting portion 41 of the first sub bus bar 20 close to the first end of the battery pack 1 (the correspondence here means that the first end of the first inner layer mounting portion 21 corresponds to the position of the first connecting portion 41 or the end portions of the first end and the first connecting portion are substantially aligned), and the second end of the first inner layer mounting portion 21 corresponds to the first connecting portion 41 of the first sub bus bar 20 far from the first end of the battery pack 1 (the correspondence here means that the second end of the first inner layer mounting portion 21 corresponds to the position of the first connecting portion 41). That is, in the fixing portion 2, the second connecting portion 42 of one of the plurality of first sub-bus bars 20, which is distant from the battery pack 1, is in a state of not being integrated by the first inner layer mounting portion 21 and the first outer layer mounting portion 23 described below, and is disposed such that the second connecting portion 42 can serve as a connecting end of the fixing portion 2 so that the adjustment portion 3 described below can be stably connected to the fixing portion 2. In addition, first inlayer installation department 21 still is formed with a plurality of first holes 210 of dodging that correspond with electric core 10 to be connected in the contact of first sub-busbar 20 and the utmost point post of electric core 10, thereby guarantee the accuracy of sampling effect in time, and this first shape, the size etc. of dodging hole 210 all do not have specific restriction, as long as can realize above-mentioned effect can.

In addition, as shown in fig. 3, the first sampling member 22 is formed with a plurality of first sampling points 220 in a bent shape corresponding to the battery cells 10 connected to the first sub bus bar 20 at a side portion of the first sub bus bar 20 facing away from the battery pack 1. The structure of the first sampling member 22 is not particularly limited, and it may be a single-layer structure, or it may also be a multilayer structure as in this embodiment, that is, a certain number of battery cells 10 are arranged in one group from the battery cell 10 located at the first end of the battery pack 1 and along the arrangement direction of the battery cells 10, the first sampling member 22 is formed with a plurality of successively stacked branches so as to correspond to each group of battery cells 10, and at this time, the first sampling points 220 are distributed at corresponding positions of the corresponding branches. This improves the rationality of the arrangement of the first sampling members 22, effectively utilizes the space and enhances the utilization ratio of the raw material. In addition, the first sampling member 22 has a sampling connection portion formed on an outer surface of the first end of the first inner layer mounting portion 21 so that the first sampling member 22 can be connected to an adapter such as a connector or a PCB.

In addition, in the present embodiment, as shown in fig. 2 to 3, the first outer layer mounting portion 23 is located on the side of the first sampling member 22 opposite to the battery pack 1, the first outer layer mounting portion 23 is also formed in a rectangular parallelepiped plate shape, and the length of the first outer layer mounting portion 23 is the same as that of the first inner layer mounting portion 21, so that the first sub bus bar 20 and the first sampling member 22 can be integrated into a single body, i.e., the fixing portion 2, by the first outer layer mounting portion 23 and the first inner layer mounting portion 21, so that the first sub bus bar can be produced and used as a standard. As shown in fig. 3, the first outer layer mounting portion 23 is further formed with a plurality of first welding holes 230 corresponding to the first avoiding holes 210, so as to facilitate use of a welding tool, thereby ensuring welding quality and ensuring stability of connection between the first sub bus bar 20 and the electric core 10. In addition, the first outer layer mounting part 23 is further formed with a plurality of first openings 231 corresponding to the first sampling points 220, and the edges of the first openings 231 need to be at least 2mm from the bending center point to avoid the bending positions of the first sampling points 220 from being pressed, and the shape of the first openings 231 and the like are not particularly limited.

Similarly to the fixing part 2, in the present embodiment, as shown in fig. 4 to 5, the adjusting part 3 is provided with a second inner layer mounting part 31 which is formed in a rectangular parallelepiped plate shape and is provided along the arrangement direction of the plurality of battery cells 10 in the battery pack 1, and is provided at the side parts of the second sub bus bar 30 and the first inner layer mounting part 21 facing the battery pack 1, that is, a first end of the second inner layer mounting part 31 corresponds to a first end of the first inner layer mounting part 21, a second end of the second inner layer mounting part 31 corresponds to the second connecting part 42 of the second sub bus bar 30 near the second end of the battery pack 1, and the adjusting part 3 can be connected to the fixing part 2 by the second inner layer mounting part 31 thus provided. In addition, the second inner-layer mounting part 31 is formed with a plurality of second relief holes 310 corresponding to the battery cells 10 to facilitate connection of the first and second sub bus bars 20 and 30 to the poles of the battery cells 10.

The adjusting part 3 is further provided with a second sampling piece 32, and the second sampling piece 32 is formed with a plurality of second sampling points 320 corresponding to the battery cells 10 connected to the second sub bus bar 30 at a side of the second sub bus bar 30 facing away from the battery pack 1. Similarly to the first sampling member 22, in the present embodiment, the second sampling member 32 is also provided in a multi-layer structure, and a sampling connection portion for connecting to an adapter component such as a connector or a PCB is formed outside the end surface of the first end of the first inner layer mounting portion 21.

In addition, the adjusting part 3 is provided with a second outer layer mounting part 33 on a side of the second sampling member 32 facing away from the battery pack 1, and a first end of the second outer layer mounting part 33 corresponds to the second connecting part 42 of the first sub bus bar 20 away from the first end of the battery pack 1, so that the tightness and stability of the connection of the adjusting part 3 and the fixing part 2 are further increased; a second end of the second outer layer mounting part 33 corresponds to the second connection part 42 of the second sub bus bar 30 adjacent to the second end of the battery pack 1; and the second outer layer mounting part 33 is further formed with a plurality of second openings 331 corresponding to the second sampling points 320 and a plurality of second welding holes 330 corresponding to the second avoiding holes 310.

It should be noted that the form of the first inner layer mounting portion 21, the first outer layer mounting portion 23, the second inner layer mounting portion 31 and the second outer layer mounting portion 33 is not particularly limited, for example, each of the mounting portions may be set as a hot-pressing film, and the mounting portions, the bus bar and the sampling member may be pressed together by a special hot-pressing tool, so as to achieve the above technical effects.

According to the utility model discloses a structure for battery sampling as above, can correspond with the electric core 10 of fixed quantity through the first sub busbar 20 of predetermined quantity and be connected, fixed part 2 forms the standard component that can be applicable to the battery package 1 that has different quantity electric core 10 promptly, then again according to the specific quantity of electric core 10 in the battery package 1, correspond the quantity of the sub busbar 30 of second in the adjustment regulating part 3 to make first sub busbar 20 and the sub busbar 30 of second correspond with every electric core 10 along the range direction of electric core 10 in the battery package 1 and be connected in proper order, and then accomplish the sampling of battery package 1. Thus, when the sampling structure is designed for different battery packs 1, the design is not required to be carried out independently, and only the universal fixing part 2 and the flexibly adjustable adjusting part 3 are used, so that the production cost is effectively reduced, and the production period is shortened.

Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present application, and are used for illustrating the technical solutions of the present application, but not limiting the same, and the scope of the present application is not limited thereto, and although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope disclosed in the present application; such modifications, changes or substitutions do not depart from the spirit and scope of the exemplary embodiments of the present application, and are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A structure for battery sampling is arranged in a battery pack, the battery pack is provided with a plurality of battery cores which are arranged in sequence, and the structure for battery sampling is characterized in that a fixing part and an adjusting part which are connected with each other are formed; the fixing portion comprises a plurality of first sub-busbars in a preset number, the adjusting portion comprises a second sub-busbar, and the first sub-busbars and the second sub-busbars are sequentially connected with each battery cell correspondingly along the arrangement direction of the battery cells.

2. The structure for battery sampling according to claim 1, wherein the fixing portion is close to a first end of the battery pack in a length direction, the adjusting portion is close to a second end of the battery pack in the length direction, and an arrangement direction of the plurality of battery cells is consistent with the length direction of the battery pack; each of the first sub-busbars and each of the second sub-busbars are formed with a first connection portion and a second connection portion along an arrangement direction of the plurality of battery cells, and the first connection portion and the second connection portion are respectively connected to each of the battery cells.

3. The structure for battery sampling according to claim 2, wherein the fixing portion includes a first inner-layer mounting portion provided along an arrangement direction of the plurality of battery cells, and the first inner-layer mounting portion is located on a side portion of the first sub bus bar facing the battery pack.

4. The structure for battery sampling according to claim 3, wherein a first end of the first inner mount corresponds to the first connection portion of the first sub bus bar near the first end of the battery pack, and a second end of the first inner mount corresponds to the first connection portion of the first sub bus bar far from the first end of the battery pack.

5. The structure for battery sampling according to claim 4, characterized in that the first inner-layer mounting portion is formed with a plurality of first avoidance holes corresponding to the battery cells.

6. The structure for battery sampling according to claim 5, wherein the fixing portion further includes a first sampling piece formed with a plurality of first sampling points corresponding to the cells to which the first sub bus bar is connected, at a side of the first sub bus bar facing away from the battery pack.

7. The structure for battery sampling according to claim 6, wherein the fixing portion is provided with a first outer layer mounting portion on a side of the first sampling member facing away from the battery pack, and a length of the first outer layer mounting portion is the same as a length of the first inner layer mounting portion; first outer installation department be formed with a plurality ofly with first opening and a plurality ofly that first sampling point corresponds and first welding hole that first dodge the hole and correspond.

8. The structure for battery sampling according to claim 3, wherein the adjustment portion includes a second inner mount portion provided along an arrangement direction of the plurality of battery cells, the second inner mount portion being located at a side portion of the second sub bus bar and the first inner mount portion that faces the battery pack;

a first end of the second inner-layer mounting part corresponds to a first end of the first inner-layer mounting part, and a second end of the second inner-layer mounting part corresponds to a second connecting part of the second sub bus bar close to a second end of the battery pack; and a plurality of second avoidance holes corresponding to the battery cells are formed in the second inner layer installation part.

9. The structure for battery sampling according to claim 8, wherein the regulating portion further includes a second sampling piece that is formed with a plurality of second sampling points corresponding to the cells to which the second sub-bus bar is connected, at a side of the second sub-bus bar that faces away from the battery pack.

10. The structure for battery sampling according to claim 9, wherein the adjusting portion is provided with a second outer layer mounting portion at a side of the second sampling member facing away from the battery pack, a first end of the second outer layer mounting portion corresponding to the second connecting portion of the first sub bus bar that is distant from the first end of the battery pack, and a second end of the second outer layer mounting portion corresponding to the second connecting portion of the second sub bus bar that is close to the second end of the battery pack; the second skin installation department be formed with a plurality ofly with the second opening that the second sampling point corresponds and a plurality ofly with the second welding hole that the hole corresponds is dodged to the second.