CN213583903U

CN213583903U - Lithium ion battery cell with short-circuit protection structure

Info

Publication number: CN213583903U
Application number: CN202022809765.3U
Authority: CN
Inventors: 何学祥; 朱一虎
Original assignee: Guangdong Jiashang New Energy Technology Co ltd
Current assignee: Guangdong Jiashang New Energy Technology Co ltd
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2021-06-29
Anticipated expiration: 2030-11-27

Abstract

The utility model discloses a lithium ion battery cell with short circuit protection structure relates to the lithium ion battery field, including the lithium ion battery box, be equipped with naked electric core in the lithium ion battery box, naked electric core is equipped with short circuit protection device outward, and short circuit protection device is connected through the positive junction and the negative pole junction of wire with naked electric core, insulating rubber bottom plate is installed to the bottom side of naked electric core, and the through hole has been seted up to one side of short circuit protection device, and one side fixed mounting of naked electric core has depression bar down. The utility model discloses in, in the use, produced stronger vibrations, will drive naked electric core downstream, naked electric core removes and will drive insulating rubber bottom plate downstream, can drive flexible post downstream to compression expanding spring, under expanding spring's spring action, can effectively slow down the vibrations that receive, thereby the difficult fracture of line connection between naked electric core of protection and the short-circuit protection device that can be fine.

Description

Lithium ion battery cell with short-circuit protection structure

Technical Field

The utility model relates to a lithium ion battery technical field especially relates to a lithium ion battery cell with short-circuit protection structure.

Background

A lithium ion battery: is a secondary battery (rechargeable battery) which mainly depends on the movement of lithium ions between a positive electrode and a negative electrode, and Li + is inserted and extracted back and forth between the two electrodes during the charge and discharge processes: during charging, Li + is extracted from the positive electrode and is inserted into the negative electrode through the electrolyte, and the negative electrode is in a lithium-rich state; when discharging, the battery generally adopts a material containing lithium as an electrode, which is a representative of modern high-performance batteries.

Through the retrieval, the patent with publication number CN206225456U discloses a lithium ion battery who contains short-circuit protection device, including naked electric core and with the parallelly connected short-circuit protection device of naked electric core, short-circuit protection device wrap up in naked electric core, short-circuit protection device includes positive plate, negative plate, insulating layer and graphite alkene layer, can protect lithium ion battery cell, but traditional equipment or vehicle are at the form in-process, will produce stronger vibrations, and the joint of positive negative pole junction is loose or is split again easily to strong vibrations to can not realize the short-circuit protection function, consequently need a lithium ion battery cell with short-circuit protection structure to satisfy people's demand.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lithium ion battery cell with short-circuit protection structure to but traditional equipment or vehicle of solution will produce stronger vibrations at the form in-process, and the joint of positive negative pole junction is loose or is split again easily to strong vibrations, thereby can not realize short-circuit protection function's problem.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a lithium ion cell with short-circuit protection structure, includes the lithium ion battery box, be equipped with naked electric core in the lithium ion battery box, naked electric core is equipped with short-circuit protection device outward, and short-circuit protection device passes through the wire and is connected with the positive pole junction and the negative pole junction of naked electric core, insulating rubber bottom plate is installed to the bottom side of naked electric core, and the through hole has been seted up to one side of short-circuit protection device, and one side fixed mounting of naked electric core has depression bar down, and the one end activity of depression bar runs through the through hole down, and one side movable mounting of depression bar.

Preferably, two fixing columns are fixedly mounted on the inner wall of the bottom side of the lithium ion battery box, telescopic columns are movably mounted on the two fixing columns, and the top ends of the two telescopic columns are fixedly mounted on the bottom side of the insulating rubber bottom plate.

Preferably, the top of fixed column has seted up flexible groove, and the bottom of flexible post extends to in the flexible groove and fixed mounting has expanding spring's top, and expanding spring's bottom fixed mounting is on the bottom side inner wall in flexible groove.

Preferably, the inner wall of the lithium ion battery box is fixedly provided with a mounting plate, and the pushing block is movably mounted on the mounting plate.

Preferably, the sliding tray has been seted up to the top side of mounting panel, and the bottom side fixed mounting who promotes the piece has the sliding block, and sliding block slidable mounting is in the sliding tray.

Preferably, one side of the pushing block is provided with an adjusting inclined hole. One side of the lower pressure rod is fixedly provided with an adjusting column, and one end of the adjusting column movably penetrates through the adjusting inclined hole.

Preferably, an extension groove is formed in the inner wall of the lithium ion battery box, an extrusion plate is fixedly mounted on one side of the pushing block, one end of an extrusion spring is fixedly mounted on one side of the extrusion plate, and the other end of the extrusion spring is fixedly mounted on the inner wall of one side of the extension groove.

The utility model has the advantages that:

in the utility model, through the arrangement of the short-circuit protection device, the bare cell can be subjected to short-circuit protection, and in the using process, strong vibration is generated, so that the bare cell can be driven to move downwards, the bare cell can be driven to move to drive the insulating rubber bottom plate to move downwards, the insulating rubber bottom plate moves downwards to drive the telescopic column to move downwards, and the telescopic spring is compressed, and under the elastic action of the telescopic spring, the received vibration can be effectively reduced, so that the circuit connection between the bare cell and the short-circuit protection device can be well protected from being broken;

the utility model discloses in, naked electric core vibrations can drive down the depression bar and remove, push down the depression bar and remove the back, under the effect of adjusting inclined hole and regulation post, can drive and promote the piece and remove, promote the piece and remove and drive the stripper plate and remove, the stripper plate removes and will compress the extrusion spring, under the elastic force effect of extrusion spring, can effectively slow down the decurrent vibrations of depression bar to the vibrations that the naked electric core of protection that can be fine received avoid causing and the circuit of being connected between the short circuit protection device is loose because of vibrations.

Drawings

Fig. 1 is a schematic structural diagram of a lithium ion battery cell with a short-circuit protection structure according to the present invention;

fig. 2 is a schematic structural diagram of a cross-sectional view of a lithium ion battery cell with a short-circuit protection structure according to the present invention;

fig. 3 is a schematic structural diagram of a partial cross-sectional view of a lithium ion battery cell with a short-circuit protection structure according to the present invention;

fig. 4 is a schematic structural diagram of a portion a in fig. 2 of a lithium ion battery cell with a short-circuit protection structure according to the present invention;

fig. 5 is a schematic structural diagram of a portion B in fig. 3 of a lithium ion battery cell with a short-circuit protection structure according to the present invention.

In the figure: 1. a lithium ion battery case; 2. a naked battery cell; 3. a short circuit protection device; 4. a positive electrode junction; 5. a negative electrode junction; 6. an insulating rubber base plate; 7. fixing a column; 8. a telescopic groove; 9. a telescopic column; 10. a through hole; 11. a lower pressure lever; 12. mounting a plate; 13. a sliding groove; 14. a pushing block; 15. a slider; 16. adjusting the inclined hole; 17. an adjustment column; 18. a pressing plate; 19. an extension groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-5, a lithium ion battery cell with short-circuit protection structure, including lithium ion battery box 1, be equipped with naked electric core 2 in lithium ion battery box 1, naked electric core 2 is equipped with short-circuit protection device 3 outward, short-circuit protection device 3 is connected with the positive pole junction 4 and the negative pole junction 5 of naked electric core 2 through the wire, insulating rubber bottom plate 6 is installed to the bottom side of naked electric core 2, through hole 10 has been seted up to one side of short-circuit protection device 3, one side fixed mounting of naked electric core 2 has depression bar 11 down, the one end activity of depression bar 11 runs through hole 10, one side movable mounting of depression bar 11 has promotion piece 14 down.

The utility model discloses in, fixed mounting has two fixed columns 7 on the bottom side inner wall of lithium ion battery box 1, and equal movable mounting has flexible post 9 on two fixed columns 7, and the equal fixed mounting in top of two flexible posts 9 is on the bottom side of insulating rubber bottom plate 6.

The utility model discloses in, flexible groove 8 has been seted up on the top of fixed column 7, the bottom of flexible post 9 extends to flexible inslot 8 and fixed mounting has expanding spring's top, expanding spring's bottom fixed mounting is on the bottom side inner wall of

flexible groove

8, 6 downshifts of insulating rubber bottom plate drive flexible post 9 and move down to compress expanding spring, under expanding spring's elastic force effect, can effectively slow down the vibrations that receive, thereby the difficult fracture of line connection between naked electric core 2 of protection that can be fine and short-circuit protection device 3.

The utility model discloses in, fixed mounting has mounting panel 12 on the inner wall of lithium ion battery box 1, promotes 14 movable mounting of piece on mounting panel 12, promotes 14 activities of being convenient for on mounting panel 12 of piece.

The utility model discloses in, sliding tray 13 has been seted up to the top side of mounting panel 12, and the bottom side fixed mounting who promotes piece 14 has sliding block 15, and sliding block 15 slidable mounting is in sliding tray 13, and sliding block 15 and sliding tray 13 of setting can carry on spacingly to the removal that promotes piece 14.

In the utility model, one side of the pushing block 14 is provided with an adjusting inclined hole 16. An adjusting column 17 is fixedly installed on one side of the lower pressing rod 11, one end of the adjusting column 17 movably penetrates through the adjusting inclined hole 16, and after the lower pressing rod 11 moves, the pushing block 14 can be driven to move under the action of the adjusting inclined hole 16 and the adjusting column 17.

The utility model discloses in, extension 19 has been seted up on the inner wall of lithium ion battery box 1, one side fixed mounting who promotes piece 14 has stripper plate 18, one side fixed mounting of stripper plate 18 has the one end of extrusion spring, the other end fixed mounting of extrusion spring is on one side inner wall of extension 19, stripper plate 18 removes and will compress the extrusion spring, under the spring action of extrusion spring, can effectively alleviate the decurrent vibrations of depression bar 11 down, thereby the vibrations that naked electric core 2 of protection that can be fine received, avoid causing the circuit of being connected between the short-circuit protection device 3 to loosen because of vibrations.

This practical theory of operation:

in the utility model, by arranging the short-circuit protection device 3, the naked electric core 2 can be short-circuit protected, in the using process, strong vibration is generated to drive the naked electric core 2 to move downwards, the naked electric core 2 moves to drive the insulating rubber bottom plate 6 to move downwards, the insulating rubber bottom plate 6 moves downwards to drive the telescopic column 9 to move downwards, and the telescopic spring is compressed, under the elastic force of the telescopic spring, the vibration can be effectively reduced, thereby the circuit connection between the naked electric core 2 and the short-circuit protection device 3 can be well protected from being broken, the naked electric core 2 vibrates to drive the lower pressure rod 11 to move, after the lower pressure rod 11 moves, under the action of the adjusting inclined hole 16 and the adjusting column 17, the pushing block 14 can be driven to move, the pushing block 14 moves to drive the sliding block 15 to slide in the sliding groove 13, the sliding block 15 and the sliding groove 13 are arranged, the movement of the pushing block 14 can be limited, promote piece 14 and remove and drive stripper plate 18 and remove, stripper plate 18 removes and will compress extrusion spring, under extrusion spring's elastic force effect, can effectively alleviate the decurrent vibrations of depression bar 11 down to the vibrations that the naked electric core 2 of protection that can be fine received avoid causing and short-circuit protection device 3 between the circuit pine of being connected because of vibrations, convenient to use.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a lithium ion battery cell with short-circuit protection structure, includes lithium ion battery box (1), be equipped with naked electric core (2) in lithium ion battery box (1), naked electric core (2) are equipped with short-circuit protection device (3) outward, and short-circuit protection device (3) are connected its characterized in that through wire and anodal junction (4) and negative pole junction (5) of naked electric core (2): insulating rubber bottom plate (6) are installed to the bottom side of naked electric core (2), and through hole (10) have been seted up to one side of short-circuit protection device (3), and one side fixed mounting of naked electric core (2) has depression bar (11) down, and the one end activity of depression bar (11) runs through hole (10), and one side movable mounting of depression bar (11) has promotion piece (14).

2. The lithium ion battery cell with the short-circuit protection structure of claim 1, wherein: two fixing columns (7) are fixedly mounted on the inner wall of the bottom side of the lithium ion battery box (1), telescopic columns (9) are movably mounted on the two fixing columns (7), and the top ends of the two telescopic columns (9) are fixedly mounted on the bottom side of the insulating rubber bottom plate (6).

3. The lithium ion battery cell with the short-circuit protection structure of claim 2, wherein: the telescopic groove (8) is formed in the top end of the fixing column (7), the bottom end of the telescopic column (9) extends into the telescopic groove (8) and is fixedly provided with the top end of a telescopic spring, and the bottom end of the telescopic spring is fixedly arranged on the inner wall of the bottom side of the telescopic groove (8).

4. The lithium ion battery cell with the short-circuit protection structure of claim 1, wherein: the lithium ion battery box is characterized in that a mounting plate (12) is fixedly mounted on the inner wall of the lithium ion battery box (1), and a pushing block (14) is movably mounted on the mounting plate (12).

5. The lithium ion battery cell with the short-circuit protection structure of claim 4, wherein: the top side of the mounting plate (12) is provided with a sliding groove (13), the bottom side of the pushing block (14) is fixedly provided with a sliding block (15), and the sliding block (15) is slidably mounted in the sliding groove (13).

6. The lithium ion battery cell with the short-circuit protection structure of claim 1, wherein: an adjusting inclined hole (16) is formed in one side of the pushing block (14), an adjusting column (17) is fixedly mounted on one side of the lower pressing rod (11), and one end of the adjusting column (17) movably penetrates through the adjusting inclined hole (16).

7. The lithium ion battery cell with the short-circuit protection structure of claim 1, wherein: the lithium ion battery box is characterized in that an extension groove (19) is formed in the inner wall of the lithium ion battery box (1), an extrusion plate (18) is fixedly mounted on one side of the pushing block (14), one end of an extrusion spring is fixedly mounted on one side of the extrusion plate (18), and the other end of the extrusion spring is fixedly mounted on the inner wall of one side of the extension groove (19).