CN217334343U

CN217334343U - Battery device

Info

Publication number: CN217334343U
Application number: CN202220734822.2U
Authority: CN
Inventors: 邱菲星
Original assignee: China Lithium Battery Technology Co Ltd
Current assignee: China Lithium Battery Technology Co Ltd
Priority date: 2022-03-30
Filing date: 2022-03-30
Publication date: 2022-08-30
Anticipated expiration: 2032-03-30

Abstract

The application relates to the technical field of batteries and discloses a battery device. The battery device comprises a flexible circuit board and a conductive bar, wherein a collecting part is arranged at the collecting end of the flexible circuit board; the large surface of the conducting bar is provided with a connecting hole, and the collecting component is at least partially arranged in the connecting hole. The utility model provides an among the battery device, the collection part of flexible line way board collection end and the simple operation of being connected of leading electrical drainage are convenient, can effectively improve flexible line way board's assembly efficiency and yield.

Description

Battery device

Technical Field

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

Background

In the prior art, in order to reduce the cost, a Flexible circuit board (FFC) is mostly used as the signal acquisition harness assembly. In the correlation technique, the collection end of FFC need be connected to and leads structures such as busbar, but, because flexible line way board is comparatively soft, its collection end is difficult to realize accurate connection location, for example, the nickel piece that conventional FFC gathered the end links to each other with the busbar welding, because the whole relatively softness of FFC, the nickel piece of gathering the end and lead to the location difficulty between the busbar, lead to welding operation's efficiency and yield to be lower, and then influence battery device's whole assembly efficiency and yield.

SUMMERY OF THE UTILITY MODEL

The utility model provides a battery device for solve the problem of flexible line way board assembly difficulty.

In a first aspect, the utility model provides a battery device, which comprises a flexible circuit board and a conductive bar, wherein the acquisition end of the flexible circuit board is provided with an acquisition part; the large surface of the conducting bar is provided with a connecting hole, and the collecting component is at least partially arranged in the connecting hole.

The utility model provides an among the battery device, the collection part perpendicular to flexible line way board's of flexible line way board collection end body setting to and insert in the connecting hole of leading electrical drainage, in order to realize the flexible line way board and lead the connection of electrical drainage. Adopt nickel piece and electrically conductive row welded connected mode among the conventional technical scheme, in the connection scheme of this application, gather easy location between part and the connecting hole, connect easy operation convenience, can effectively improve flexible line way board's assembly efficiency. Moreover, the collecting component and the connecting hole of the conducting bar in the application are simple in structure, convenient to install, low in cost and beneficial to industrial production.

Drawings

For a better understanding of the present invention, reference may be made to the embodiments illustrated in the following drawings. The components in the drawings are not necessarily to scale, and some relevant components may be omitted in order to emphasize and clearly illustrate the technical features of the present disclosure. In addition, the relevant elements or components may be arranged differently as is known in the art.

Fig. 1 is a schematic view of a partial structure of a battery device according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a conductive bar of a battery device according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a portion of a flexible printed circuit board of a battery device according to an embodiment of the present invention;

fig. 4 is a schematic view of a connection cross-section structure of a flexible circuit board and a conductive bar according to an embodiment of the present invention;

fig. 5 is a schematic view of a connection cross-sectional structure of a flexible printed circuit and a conductive bar according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a collecting component of a flexible printed circuit according to an embodiment of the present invention;

fig. 7 is a schematic view of a connection cross-sectional structure of a flexible printed circuit and a conductive bar according to another embodiment of the present invention.

Reference numerals:

1-supporting a flexible circuit board; 11-cable branch; 2-a collecting member;

21-a spring plate; 22-a boss; 220-first chamfer; 23-crimping holes; 24-rubber ring;

25-a second protrusion; 26-a third projection; 3-a conductive bar; 30-connecting hole;

31-a groove; 32-large surface; 33-bottom wall; 34-a raised structure;

35-a first projection; 36-a second chamfer; 4-a first limit structure; 5-a battery.

Detailed Description

The technical solutions in the exemplary embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the exemplary embodiments of the present disclosure. The example embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure, and it is, therefore, to be understood that various modifications and changes may be made to the example embodiments without departing from the scope of the present disclosure.

As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6 and fig. 7, the present invention provides a battery device, which includes a flexible circuit board 1 and a conductive bar 3, wherein a collecting end of the flexible circuit board 1 is provided with a collecting component 2; the large face 32 of the conductive bar 3 is provided with a connection hole 30, and the collecting member 2 is at least partially disposed in the connection hole 30.

The utility model provides an among the battery device, collection part 2 that flexible line way board 1 gathered the end inserts in the connecting hole 30 of leading electrical drainage 3 to realize flexible line way board 1 and lead the connection of electrical drainage 3. Adopt the nickel piece and lead 3 welded connected modes of electrical bar among the conventional technical scheme, in the connection scheme of this application, gather easy location between part 2 and the connecting hole 30, connect easy operation convenience, can effectively improve the assembly efficiency of flexible line way board 1. In addition, the collecting component 2 and the connecting hole 30 of the conducting bar 3 in the application have simple structures, are convenient to install and low in cost, and are beneficial to industrial production.

Specifically, as shown in fig. 1 and 2, the conductive bar 3 is a flat sheet-like structure having two opposite large-area surfaces, namely, large surfaces 32, wherein one large surface 32 faces the battery 5 and is connected to the battery 5, and the connection hole 30 is disposed on the other large surface facing away from the battery 5. The flexible circuit board 1 can include conventional flexible circuit board (FPC) and flat cable device (FFC), because flexible circuit board 1 structure is soft, hardly realize accurate welding position when its collection end adopts the welding with leading electrical drainage 3, welding operation efficiency and yield are all lower, and link to each other the collection end of flexible circuit board 1 with leading electrical drainage 3 grafting through gathering part 2, compare in welding operation simpler, efficiency is higher, the yield is better.

Illustratively, the collecting member 2 is disposed perpendicular to the large surface of the conductive bar 3, i.e., the collecting member 2 is inserted into the connecting hole 30 perpendicular to the large surface of the conductive bar 3. Thus, the processing and the assembly can be convenient; and, the body of flexible line way board 1 and the big face of electrically conductive row 3 are parallel, and when the body of flexible line way board 1 and electrically conductive row 3 take place relative position when squinting, gather in part 2 vertical insertion connecting hole 30, be favorable to gathering part 2 in connecting hole 30 internal rotation to can alleviate and adapt to the relative position skew between flexible line way board 1 and electrically conductive row 3, avoid leading to connecting the inefficacy because of flexible line way board 1 and electrically conductive row 3 take place the skew.

In some embodiments, the collecting member 2 is fixedly connected to the connecting hole 30. For example, the collecting component 2 and the connecting hole 30 are fixed by bonding with a conductive adhesive; or the collecting component 2 and the connecting hole 30 are locked and fixed by a locking piece.

In some embodiments, as shown in fig. 3, 4, 5, 6 and 7, the collecting member 2 is a columnar structure extending in a depth direction of the connecting hole 30.

Illustratively, the collecting member 2 is rotatably disposed in the coupling hole 30. In this way, no matter which orientation the collection end of the flexible circuit board 1 is located on the conductive bar 3, the collection part 2 can be adaptively inserted into the connection hole 30, and the collection part 2 can rotate relative to the connection hole 30, so that even if a certain offset is caused by relative torsion between the flexible circuit board 1 and the conductive bar 3, the connection between the collection part 2 and the conductive bar 3 cannot be influenced, which is beneficial to improving the connection reliability.

Preferably, the collecting member 2 has a cylindrical shape, and the connecting hole 30 has a circular hole. Therefore, the buffer between the acquisition component 2 and the connecting hole 30 is facilitated, the acquisition component is not easy to damage, and the service life can be prolonged; and, because the block links to each other between collection part 2 and the connecting hole 30, not welded fastening together, collection part 2 can rotate in the circular port, can improve grafting suitability, the connection operation of being convenient for, and allow flexible line way board 1 and lead and produce certain torsional deflection between the electrical drainage 3, be favorable to improving and connect the reliability.

Illustratively, one end of the collecting component 2 is provided with a crimping hole 23, and the collecting cable branch 11 of the flexible circuit board 1 is inserted into the crimping hole 23 and connected with the collecting component 2 by crimping.

In some embodiments, as shown in fig. 3, 4, 5 and 6, the collecting part 2 is inserted into the connecting hole 30 of the conductive bar 3, and the collecting part 2 and/or the conductive bar 3 is provided with a first limiting structure 4 for limiting the collecting part 2 and the connecting hole 30 from each other.

Specifically, the acquisition component 2 and the connecting hole 30 are mutually limited through the first limiting structure 4, so that the acquisition component 2 can be prevented from being separated from the connecting hole 30, and the connection reliability of the acquisition component 2 and the connecting hole 30 is further ensured.

In some embodiments, as shown in fig. 3, 4 and 5, the first limiting structure 4 includes a groove 31 disposed on a sidewall of the connecting hole 30 and an elastic limiting member disposed on the collecting member 2, and the elastic limiting member is configured to be engaged with the groove 31.

Elastic limiting part can take place elastic deformation, can receive the force compression at the in-process of inserting connecting hole 30, because the stress state changes when reacing recess 31 position can resume the shape again, and then with recess 31 block, like this, can realize gathering part 2 and connecting hole 30 spacing each other, avoid gathering part 2 and deviating from connecting hole 30, guarantee the connection reliability of gathering part 2 and connecting hole 30.

Illustratively, the collection component 2 is a columnar structure extending along the depth direction of the connection hole 30, one end of the collection component 2 is connected with the body of the flexible printed circuit board 1, and the elastic limiting part is arranged at the end of the collection component 2 far away from the end connected with the body of the flexible printed circuit board 1.

For example, the collecting component 2 is a columnar structure extending along the depth direction of the connecting hole 30, and the elastic limiting part is arranged perpendicular to the side surface of the columnar structure and can elastically stretch and retract along the direction perpendicular to the side surface of the columnar structure, so that the size of the elastic limiting part can be smaller, and the elastic clamping effect is better; for example, as shown in fig. 6, the elastic limiting member may be a rubber ring 24 that is fitted on the side surface of the collecting member 2, but is not limited to the rubber ring 24, and may be other elastic materials or structures.

Exemplarily, as shown in fig. 3, 4 and 5, the elastic limiting member is an elastic sheet 21. The elastic sheet 21 has good elastic performance, is convenient to compress, and can quickly recover deformation, thereby being beneficial to elastic clamping.

Illustratively, the elastic piece 21 is a conductive piece. Thus, the elastic sheet 21 is engaged with the conductive bar 3 and simultaneously electrically connected, thereby increasing the flow area between the collecting member 2 and the conductive bar 3.

Illustratively, the elastic sheet 21 is disposed near the bottom end of the collecting member 2, specifically on the sidewall of the collecting member 2, so as to engage with the groove 31 on the sidewall of the connecting hole 30.

Exemplarily, an included angle θ is formed between the side walls of the elastic sheet 21 and the collecting component 2, and an opening of the included angle θ faces one end of the collecting component 2 connected with the body of the flexible circuit board 1, that is, the included angle θ faces an insertion hole of the connecting hole 30, so that the improvement of the limiting effect of the elastic sheet 21 and the groove 31 is facilitated, the elastic sheet 21 is prevented from being separated from the groove 31, and the reliability of connection between the collecting component 2 and the connecting hole 30 can be further ensured.

Illustratively, the first limit structure 4 includes at least two pairs of snap-fit grooves 31 and spring pieces 21. For example, the collecting part 2 is a columnar structure extending along the depth direction of the connecting hole 30, 2-3 elastic sheets 21 are uniformly arranged along the circumferential direction of the collecting part 2, and correspondingly, 2-3 grooves 31 are uniformly arranged along the circumferential direction of the side wall of the connecting hole 30; when the 2-3 elastic sheets 21 are correspondingly clamped into the 2-3 grooves 31, the acquisition component 2 and the connecting hole 30 are connected in place.

Illustratively, the collecting member 2 is made of a metal material, such as a metal nickel material. The elastic sheet 21 can be made of metal material; the elastic sheet 21 is preferably made of the same material as the acquisition component 2, for example, an elastic nickel sheet is adopted, so that the acquisition component 2 and the elastic sheet 21 can be integrally formed; or, the elastic sheet 21 may also be made of a non-metal material, in this case, the main body portion of the collecting member 2 and the elastic sheet 21 may be separately prepared and then welded or bonded together, which may be determined according to the actual situation.

Of course, the specific form of the first limiting structure 4 is not limited to the above-mentioned embodiment, and in practical application, the first limiting structure 4 may be determined according to the specific form of the collecting member 2 and the connecting hole 30 and the practical process requirements.

In other embodiments, as shown in fig. 7, the collecting member 2 is a column-shaped structure extending along the depth direction of the connecting hole, and includes a first end and a second end, wherein the first end is connected to the body of the flexible printed circuit board, and for example, the collecting end of the flexible printed circuit board can be crimped by using the crimping hole 23. It is specific, be equipped with first arch 35 on the lateral wall of connecting hole, be equipped with second arch 25 and third arch 26 on the side of collection part 2, second arch 25 and third arch 26 are arranged to second end direction from the first end of collecting part 2, third arch 26 is elastic structure, so that collection part 2 can insert in the connecting hole from the second end, first arch 35 block is between second arch 25 and third arch 26, it is spacing to first arch 35 through second arch 25 and third arch 26, both can avoid collecting part 2 to deviate from the connecting hole, can avoid collecting part 2 to peg graft too deeply again, be favorable to pegging graft the location to collection part 2.

Illustratively, the second bump 25 and/or the third bump 26 are conductive structures. In this way, the flow area between the collecting member 2 and the conductive bar 3 can be increased.

Illustratively, the second protrusion 25 and the third protrusion 26 are inserted into the connecting hole, and a side of the second protrusion 25 and/or the third protrusion 26 facing away from the inserting hole of the connecting hole 30 is provided with a chamfer to facilitate smooth introduction into the connecting hole.

In some embodiments, as shown in fig. 4, the connection hole 30 is a blind hole, that is, the connection hole 30 does not penetrate through the conductive bar 3, one end of the connection hole is an opening, the other end of the connection hole has a bottom wall 33, the bottom wall 33 can limit the position of the collecting component 2, so that the plugging depth can be conveniently controlled, the plugging in place can be facilitated, and the plugging efficiency and the yield can be improved.

In other embodiments, as shown in fig. 5, the connection hole 30 may be a through hole; specifically, at this time, a second limiting structure may be provided at an end of the through hole away from the insertion hole of the collecting part 2, and the end of the collecting part 2 is limited by the second limiting structure. For example, the second limiting structure may be a protruding structure 34 on the inner wall of the connecting hole 30, or may be an adhesive layer for sealing the bottom opening of the through hole, which may be determined according to the actual situation.

In some embodiments, as shown in fig. 3, 4, 5 and 6, the side wall of the collecting member 2 is further provided with a protrusion 22 for interference contact with the connecting hole 30. Specifically, the protruding portion 22 acts like a connecting contact, and for the structure directly protruding from the body of the collecting component 2, the contact yield and the contact area of the collecting component 2 and the conductive bar 3 can be improved by arranging the protruding portion 22, so that the electrical connection effect of the collecting component 2 and the conductive bar 3 is improved.

Illustratively, the acquisition component 2 is a columnar structure extending along the depth direction of the connection hole 30, and the acquisition component 2 is provided with one or more circles of annular protrusions 22 around the circumferential direction of the side wall thereof, and the annular protrusions 22 are in interference contact with the connection hole 30. Preferably, the acquisition component 2 comprises at least two rings of annular protrusions 22.

Illustratively, a first chamfer 220 is provided on a side of the projection 22 facing away from the insertion opening of the connection bore 30. The first chamfer 220 facilitates insertion of the guide boss 22 into the attachment aperture 30 to facilitate insertion of the collection unit 2.

Of course, the projection 22 is not limited to the above shape; specifically, in the actual design, the shape and number of the protrusions 22 may be designed according to the requirement of the flow area between the collecting member 2 and the conductive bar 3. In addition, in the present application, the sizes of the collecting member 2 and the connecting hole 30 may also be designed according to the requirement of the flow area between the collecting member 2 and the conductive bar 3, and are not limited specifically here.

In some embodiments, as shown in fig. 7, the edge of the insertion opening of the connection hole is provided with a second chamfer 36. Thus, the collection member 2 is guided to be inserted into the connection hole 30, and the insertion operation of the collection member 2 is facilitated.

Specifically, the chamfer in this application, both can be formed by the inclined plane, also can be formed by the arc surface, as long as can play the effect of being convenient for peg graft and leading-in.

In some embodiments, as shown in fig. 1, the battery device may be a battery module or a battery pack. Specifically, the battery device further comprises a battery pack, the battery pack comprises a plurality of batteries 5, the conducting bar 3 is connected with the poles of the batteries 5, and the acquisition component 2 acquires information of the batteries 5 through the conducting bar 3.

Specifically, because flexible line way board 1 generally is equipped with a plurality of collection ends, the collection end that provides in this embodiment and the connected mode of leading electrical bar 3 are favorable to simplifying the location connection operation of each collection end, can simplify flexible line way board 1 holistic connection assembly flow greatly, and then effectively improve battery device's assembly efficiency.

It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A battery device is characterized by comprising a flexible circuit board and a conductive bar, wherein a collection part is arranged at a collection end of the flexible circuit board; the large surface of the conducting bar is provided with a connecting hole, and the collecting component is at least partially arranged in the connecting hole.

2. The battery device of claim 1, wherein the collecting member is disposed perpendicular to a large face of the conductive bar.

3. The battery device of claim 1, wherein the collecting member is fixed to the connecting hole by bonding with a conductive adhesive; or the acquisition part and the connecting hole are locked and fixed by adopting a locking part.

4. The battery device according to claim 1, wherein the collecting member is rotatably disposed in the coupling hole.

5. The battery device according to claim 1, wherein a groove is formed on a sidewall of the connection hole, and an elastic stopper is disposed on the collecting member, and the elastic stopper engages with the groove.

6. The battery device according to claim 5, wherein the collecting member is a columnar structure extending in a depth direction of the connecting hole, one end of the collecting member is connected to the body of the flexible printed circuit board, and the elastic stopper is disposed at an end of the collecting member away from the body of the flexible printed circuit board.

7. The battery device according to claim 5, wherein the collecting member is a columnar structure extending in a depth direction of the connecting hole, and the elastic limiting member is disposed perpendicular to a side surface of the columnar structure and is elastically stretchable in a direction perpendicular to the side surface of the columnar structure.

8. The battery device of claim 5, wherein the resilient stop is a spring.

9. The battery device of claim 8, wherein the spring plate is a conductive member.

10. The battery device of claim 8, wherein an included angle is formed between the elastic sheet and the collecting component, and an opening of the included angle faces to one end of the collecting component connected with the flexible circuit board body.

11. The battery device according to claim 1, wherein the collecting member is a columnar structure extending in a depth direction of the connecting hole, and includes a first end and a second end, the first end being connected to the body of the flexible wiring board;

the side wall of the connecting hole is provided with a first bulge, the side face of the collecting component is provided with a second bulge and a third bulge, the second bulge and the third bulge are arranged from the first end of the collecting component to the second end, the third bulge is of an elastic structure, and the first bulge is clamped between the second bulge and the third bulge.

12. The battery device according to claim 11, wherein the second protrusion and/or the third protrusion is a conductive structure.

13. The battery device of claim 1, wherein the collecting member has a cylindrical shape, and the coupling hole is a circular hole.

14. The battery device according to claim 1, wherein the connection hole is a blind hole.

15. The battery device according to claim 1, wherein the connection hole is a through hole, and a second limiting structure is disposed at an end of the through hole away from the insertion opening of the collecting member, and is used for limiting an end of the collecting member.

16. The battery device according to claim 1, wherein a protrusion for interference contact with the connection hole is further provided on the sidewall of the collecting member.

17. The battery device according to any one of claims 1 to 16, wherein the pickup member is a columnar structure extending in a depth direction of the connection hole, one end of the pickup member is provided with a crimping hole, and a pickup cable branch of the flexible wiring board is inserted into the crimping hole and connected to the pickup member by crimping.