CN217788728U

CN217788728U - Battery device

Info

Publication number: CN217788728U
Application number: CN202221945434.5U
Authority: CN
Inventors: 关俊山; 谷亮杰; 曹智娟
Original assignee: China Lithium Battery Technology Co Ltd
Current assignee: China Lithium Battery Technology Co Ltd
Priority date: 2022-07-26
Filing date: 2022-07-26
Publication date: 2022-11-11
Anticipated expiration: 2032-07-26

Abstract

The utility model relates to the technical field of batteries, in particular to a battery device, which comprises a collecting circuit board, a plurality of batteries and a plurality of busbars, wherein the batteries are arranged along a first direction, the busbars are connected between pole assemblies of two adjacent batteries and are positioned on the side surfaces of the batteries perpendicular to a second direction, and the second direction is perpendicular to the first direction and is respectively parallel to a bottom plate of the battery device; the collecting circuit board is arranged on one side, back to the batteries, of the busbars and is provided with a trunk and a plurality of branches, the trunk extends along a first direction, the branches comprise a first branch and a second branch, the first branch is linear and extends downwards from the trunk and is connected with the busbars located at the end part along the first direction, and the second branch is connected with other busbars. Through the structure design, the utility model discloses can be convenient for gather the fixed of the branch road of the tip of circuit board, guarantee the fixed effect of the tip of gathering the circuit board, promote the fixed strength of gathering the circuit board.

Description

Battery device

Technical Field

The utility model relates to a battery technology field especially relates to a battery device.

Background

In the conventional battery device, the FPC is provided to the side surface of the plurality of batteries, and the FPC includes a trunk extending in the arrangement direction of the plurality of batteries and a plurality of branches, one end of each branch is connected to the top or bottom side of the trunk, the other end of each branch is bent to be connected to the bus bar in the arrangement direction, and each branch has a buffer portion. However, the above-described structure having the buffer portion causes a problem that the branch is difficult to assemble, the fixing strength is low, and the fixing failure is liable to occur with respect to the branch located at the end in the arrangement direction.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to overcome at least one of the above-mentioned drawbacks of the prior art and to provide a battery device with a high fixing strength for the branches of the end of the collecting circuit board.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

according to an aspect of the present invention, a battery device is provided, wherein the battery device includes a collecting circuit board, a plurality of batteries and a plurality of busbars, the plurality of batteries are arranged along a first direction, the busbars are connected between two adjacent pole assemblies of the batteries and are located on the sides of the batteries perpendicular to a second direction, the second direction is perpendicular to the first direction and is respectively parallel to a bottom plate of the battery device; the collection circuit board is arranged on one side, back to the battery, of the busbars, the collection circuit board is provided with a main body and a plurality of branches, the main body extends along the first direction, the branches comprise a first branch and a second branch, the first branch is linear and extends downwards from the main body and is connected to the busbars at the end part along the first direction, and the second branch is connected to the busbars.

According to the above technical scheme, the utility model provides a battery device's advantage lies in with positive effect:

the utility model provides a battery device's collection circuit board has trunk and a plurality of branch road, and a plurality of branch roads include first branch road and second branch road, and first branch road is the linear type and by trunk downwardly extending to be connected in the busbar along first direction in the tip, the second branch road is connected in other busbars. Through the structure design, owing to the first branch road of gathering the circuit board has adopted vertical downwardly extending's structure design, makes the utility model discloses can be convenient for gather the fixed of the branch road of the tip of circuit board, guarantee the fixed effect of the tip of gathering the circuit board, promote the fixed strength of gathering the circuit board.

Drawings

The various objects, features and advantages of the present invention will become more apparent from the following detailed description of the preferred embodiments of the invention, when considered in conjunction with the accompanying drawings. The drawings are merely exemplary of the invention and are not necessarily drawn to scale. In the drawings, like reference characters designate the same or similar parts throughout the different views. Wherein:

fig. 1 is a schematic perspective view showing a partial structure of a battery device according to an exemplary embodiment;

fig. 2 is an enlarged schematic view of a portion a in fig. 1;

fig. 3 is a schematic perspective view of the collecting circuit board shown in fig. 1.

The reference numerals are explained below:

100. a battery;

200. collecting a circuit board;

210. a trunk;

220. a first branch;

230. a second branch;

231. a buffer section;

240. a socket;

300. a bus bar;

410. a first nickel plate;

420. a second nickel plate;

x, a first direction;

y. second direction.

Detailed Description

Exemplary embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It is to be understood that the invention is capable of other and different embodiments and its several details are capable of modification without departing from the scope of the invention, and that the description and drawings are to be regarded as illustrative in nature and not as restrictive.

In the following description of various exemplary embodiments of the invention, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration various exemplary structures, systems, and steps in which aspects of the invention may be practiced. It is to be understood that other specific arrangements of parts, structures, example devices, systems, and steps may be utilized and structural and functional modifications may be made without departing from the scope of the present invention. Moreover, although the terms "over," "between," "within," and the like may be used in this specification to describe various example features and elements of the invention, these terms are used herein for convenience only, e.g., in accordance with the orientation of the examples described in the figures. Nothing in this specification should be construed as requiring a specific three dimensional orientation of structures to fall within the scope of the invention.

Referring to fig. 1, a schematic perspective view of a partial structure of a battery device according to the present invention is representatively shown, in which a battery pack of the battery device and a three-dimensional assembly structure of a collecting circuit board 200 and a bus bar 300 disposed on the battery pack are specifically shown. In this exemplary embodiment, the battery device provided by the present invention is explained by taking an on-vehicle battery as an example. Those skilled in the art will readily appreciate that various modifications, additions, substitutions, deletions, or other changes may be made to the specific embodiments described below in order to apply the inventive concepts described herein to other types of battery devices or other processes, and such changes are within the scope of the principles of the present invention.

As shown in fig. 1, in an embodiment of the present invention, the battery device includes a plurality of batteries 100, a collecting circuit board 200, and a plurality of busbars 300. Referring to fig. 2 and 3 in combination, an enlarged schematic view of portion a of fig. 1 is representatively illustrated in fig. 2; fig. 3 is a schematic perspective view of a collecting circuit board 200 of a battery device capable of embodying the principles of the present invention, and illustrates a part of the structure thereof in an enlarged scale. The structure, connection mode and functional relationship of the main components of the battery device provided by the present invention will be described in detail below with reference to the above drawings.

As shown in fig. 1 to 3, in an embodiment of the present invention, the plurality of batteries 100 are arranged along a first direction X, the bus bar 300 is connected between the pole assemblies of two adjacent batteries 100, and the bus bar 300 is located at a side of the batteries 100 perpendicular to a second direction Y perpendicular to the first direction X and parallel to the bottom plate of the battery device. On this basis, the collecting circuit board 200 is disposed on a side of the plurality of busbars 300 facing away from the battery 100, and the collecting circuit board 200 has a trunk 210 and a plurality of branches, where the trunk 210 extends along the first direction X, and the plurality of branches includes a first branch 220 and a second branch 230. Specifically, the first branch 220 is linear and extends downward from the trunk 210, and the first branch 220 is connected to the bus bar 300 at the end along the first direction X. The second branch 230 is connected to the other bus 300. Through the structure design, because the first branch road 220 of gathering circuit board 200 has adopted vertical downwardly extending's structural design, make the utility model discloses can be convenient for gather the fixed of the branch road of circuit board 200's tip, guarantee the fixed effect of the tip of gathering circuit board 200, promote the fixed strength of gathering circuit board 200.

As shown in fig. 3, in an embodiment of the present invention, the first branch 220 may extend along a height direction of the battery 100, and specifically, the height direction may be a direction perpendicular to a plane defined by the first direction X and the second direction Y. Through the structure design, the utility model discloses can further guarantee the fixed effect of the tip of gathering circuit board 200, further promote the fixed intensity of gathering circuit board 200. In some embodiments, the first branch 220 may also extend along other directions, such as an inclined direction having an angle with the height direction of the battery 100 on a plane parallel to the first direction X and perpendicular to the second direction Y, which is not limited by the present embodiment.

As shown in fig. 3, in an embodiment of the present invention, the collecting circuit board 200 may have two first branches 220, and the two first branches 220 are respectively connected to two busbars 300 located at two ends along the first direction X. Through the structure design, the utility model discloses can be convenient for gather the branch road of two tip of circuit board 200 fixed, further guarantee the fixed effect of the tip of gathering circuit board 200, further promote the fixed intensity of gathering circuit board 200.

As shown in fig. 2 and 3, in an embodiment of the present invention, the second branch 230 of the collecting circuit board 200 may have a buffer 231. Through the structure design, the utility model discloses can utilize buffer 231 to provide buffer function for second branch road 230, be suitable for the impact force that produces because of busbar 300 and the relative displacement who gathers circuit board 200 under the absorption vibration operating mode, improve the structural stability and the reliability of gathering circuit board 200.

As shown in fig. 2 and 3, based on the structural design that the second branch 230 has the buffer 231, in an embodiment of the present invention, the buffer 231 may have a substantially bent structure, and the buffer 231 having the bent structure has two ends, one of which is connected to the trunk 210 of the collecting circuit board 200, and the other of which is connected to the bus bar 300. Through the structure design, the utility model discloses can optimize the buffering effect that buffering portion 231 provided.

As shown in fig. 2 and 3, the buffer 231 may further be substantially in an "S" shape in one embodiment of the present invention due to the structural design that the buffer 231 has a bent structure. Through the structure design, the utility model discloses can further optimize the buffering effect that buffering portion 231 provided.

As shown in fig. 2, in an embodiment of the present invention, a gap may be formed between two adjacent busbars 300 along the first direction X. In other words, since the bus bar 300 is connected to the pole assemblies of two adjacent batteries 100, the bus bar 300 spans the side surface of the battery 100 perpendicular to the second direction Y, and along the first direction X, the side surface of one battery 100 spans the bus bar 300, and the side surface of the adjacent battery 100 does not span the bus bar 300, so that a gap is formed between two adjacent bus bars 300. In addition, the position of the buffer portion 231 of the second branch 230 of the collecting wiring board 200 may correspond to the position of the gap. Through the structure design, the utility model discloses can utilize the space between two adjacent busbar 300, avoid buffer 231 to take place the structure with busbar 300 when the atress produces deformation and interfere, the stress release of the buffer plate of being convenient for, the second branch road 230 of being convenient for is connected with busbar 300 simultaneously (for example weld in busbar 300 through the nickel piece) for the plane degree preferred of junction.

As shown in fig. 2, in an embodiment of the present invention, the plurality of branches of the collecting circuit board 200 may be connected to the plurality of busbars 300 via a plurality of nickel sheets, respectively, so as to realize the electrical connection between the branches and the busbars 300. For ease of understanding and explanation, the plurality of nickel plates are divided into a first nickel plate 410 and a second nickel plate 420, the first nickel plate 410 connects the first branch 220 and the bus bar 300, and the second nickel plate 420 connects the second branch 230 and the bus bar 300.

As shown in fig. 2, based on the structural design that the branches are connected to the bus bar 300 via the nickel sheets, in an embodiment of the present invention, the first nickel sheet 410 (i.e., the nickel sheet connecting the first branch 220 and the bus bar 300) may extend along the height direction of the battery 100. Through the structure design, the utility model discloses can make the extending direction of first nickel piece 410 keep unanimous with the extending direction of first branch 220, further guarantee first branch 220 in view of the above via the joint strength of first nickel piece 410 with busbar 300.

As shown in fig. 2, based on the structural design that the branch is connected to the bus bar 300 via the nickel plate, in an embodiment of the present invention, the second nickel plate 420 (i.e., the nickel plate connecting the second branch 230 and the bus bar 300) may extend along the first direction X. Through the structure design, the utility model discloses can make the extending direction of second nickel piece 420 and the extending direction of the tip of second branch road 230 keep unanimous, further guarantee the joint strength of second branch road 230 via second nickel piece 420 and busbar 300 in view of the above.

As shown in fig. 1 and 2, in an embodiment of the present invention, the battery device provided by the present invention may further include a structural beam (not shown in the drawings). On this basis, the end of the trunk 210 of the collection wiring board 200 in the first direction X may be provided with a patch socket 240, and the patch socket 240 may be fixed on the structural beam. Through the structure design, the utility model discloses can promote the fixed intensity of the socket 240 of gathering circuit board 200.

In an embodiment of the present invention, the trunk 210 of the collecting circuit board 200 and the bus bar 300 can be adhered by glue. For example, the trunk 210 of the collecting circuit board 200 may be, but is not limited to, adhered to the bus bar 300 by using a double-sided adhesive tape. Through the structure design, the utility model discloses trunk 210 and busbar 300 fixed connection can be realized, the insulating effect between trunk 210 and the busbar 300 is guaranteed simultaneously.

It should be noted herein that the battery devices illustrated in the drawings and described in the present specification are only a few examples of the many types of battery devices that can employ the principles of the present invention. It should be clearly understood that the principles of the present invention are by no means limited to any of the details of the battery device or any of the components of the battery device shown in the drawings or described in the specification.

To sum up, the utility model provides a battery device's collection circuit board 200 has trunk 210 and a plurality of branch road, and a plurality of branch roads include first branch road 220 and second branch road 230, first branch road 220 be the linear type and by trunk 210 downwardly extending is connected in the busbar 300 that lies in the tip along first direction X, and second branch road 230 is connected in other busbars 300. Through the structure design, the utility model discloses can be convenient for gather the branch road of circuit board 200's tip fixed, guarantee the fixed effect of the tip of gathering circuit board 200, promote the fixed intensity of gathering circuit board 200.

Exemplary embodiments of a battery device according to the present invention are described and/or illustrated in detail above. Embodiments of the invention are not limited to the specific embodiments described herein, but rather, components and/or steps of each embodiment may be utilized independently and separately from other components and/or steps described herein. Each component and/or step of one embodiment can also be used in combination with other components and/or steps of other embodiments. When introducing elements/components/etc. described and/or illustrated herein, the articles "a," "an," and "the" are intended to mean that there are one or more of the elements/components/etc. The terms "comprising," "including," and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc. Furthermore, the terms "first" and "second" and the like in the claims and the description are used merely as labels, and are not numerical limitations of their objects.

While the proposed battery device has been described in terms of various specific embodiments, those skilled in the art will recognize that the invention can be practiced with modification within the spirit and scope of the claims.

Claims

1. A battery device is characterized by comprising a collecting circuit board, a plurality of batteries and a plurality of busbars, wherein the batteries are arranged along a first direction, the busbars are connected between pole assemblies of two adjacent batteries and positioned on the side surfaces of the batteries perpendicular to a second direction, and the second direction is perpendicular to the first direction and is respectively parallel to a bottom plate of the battery device; the collecting circuit board is arranged on one side, back to the battery, of the busbars, the collecting circuit board is provided with a trunk and a plurality of branches, the trunk extends along the first direction, the branches comprise a first branch and a second branch, the first branch is linear and extends downwards from the trunk and is connected with the busbars at the end part along the first direction, and the second branch is connected with other busbars.

2. The battery device according to claim 1, wherein the first branch extends in a height direction of the battery.

3. The battery device according to claim 1, wherein the collecting wiring board has two first branches connected to two of the bus bars at both ends in the first direction, respectively.

4. The battery device according to claim 1, wherein the second branch has a buffer portion.

5. The battery device as claimed in claim 4, wherein the buffer part has a bent structure and has two end parts, one of which is connected to the trunk and the other of which is connected to the bus bar.

6. The battery device according to claim 5, wherein the buffer portion has an "S" shape.

7. The battery device according to claim 4, wherein, in the first direction, a gap is provided between two adjacent bus bars, and a position of the buffer portion of the second branch corresponds to a position of the gap.

8. The battery device according to any one of claims 1 to 7, wherein the branch is connected to the bus bar via a nickel plate.

9. The battery device according to claim 8, wherein the nickel plate connecting the first branch and the bus bar extends in a height direction of the battery.

10. The battery device according to claim 8, wherein the nickel plate connecting the second branch and the bus bar extends in the first direction.

11. The battery device according to any one of claims 1 to 7, further comprising a structural beam, wherein an end of the backbone in the first direction is provided with a socket, and the socket is fixed to the structural beam.

12. The battery device according to any one of claims 1 to 7, wherein the trunk is adhesively bonded to the bus bar.