CN218867264U

CN218867264U - Square shell battery core of lithium battery

Info

Publication number: CN218867264U
Application number: CN202222833704.XU
Authority: CN
Inventors: 李镇璧; 孙术刚
Original assignee: Dongguan Bosen New Energy Co ltd
Current assignee: Dongguan Bosen New Energy Co ltd
Priority date: 2022-10-26
Filing date: 2022-10-26
Publication date: 2023-04-14
Anticipated expiration: 2032-10-26

Abstract

The utility model discloses a lithium cell square shell electricity core relates to the battery and makes technical field. The method comprises the following steps: the shell body, electricity core main part, the installation sets up in the inner wall of shell body, protection mechanism, it is equipped with two sets ofly, every protection mechanism of group all includes the protection shield, two sets of first elastomeric element, two sets of second elastomeric element, a plurality of sponge strip, every first elastomeric element of group all locates in the shell body, every second elastomeric element of group is equal to be located in the shell body symmetrically, the protection shield is located on elastomeric element, every sponge strip is all fixed to be set up in inner wall one side of shell body, the sponge frame, fixed the inner wall bottom that sets up in the shell body, and the battery apron. This lithium cell square shell electricity core through protection mechanism and sponge frame, can protect electric core main part to increase the protection effect to electric core main part, cushion the impact that electric core main part received, when avoiding electric core main part to receive violent collision, the circumstances such as tympanic bulla, weeping appear very easily, cause electric core main part to damage.

Description

Square shell battery core of lithium battery

Technical Field

The utility model relates to a technical field is made to the battery, specifically is a lithium cell square shell electricity core.

Background

Along with the improvement of technique and arousing of user's environmental protection consciousness, new energy automobile's occupation volume promotes gradually, the lithium cell is as new energy automobile's power supply, also the water rises the ship height, output is bigger and bigger, but compare traditional power battery such as lead-acid battery, the performance of lithium cell is not stable enough and safety, therefore, promote lithium cell in use's stability and safety, become the first-choice research direction of lithium cell industry, square electric core in the lithium cell is the most common electric core structure, square electric core has two book core involutions to form generally, for the security of guaranteeing electric core, need wrap up the one deck insulating film in the side of electric core and bottom surface in the production manufacture process, avoid electric core and metal aluminum hull direct contact to cause the short circuit, consequently, the parcel quality of insulating film is very important a ring to the security performance of electric core.

The granted publication number "CN208767391U" describes "a lithium battery cell, which includes a cover plate, a pole column, a connecting sheet, and at least one winding core, where the pole column is arranged on the upper surface of the cover plate, and the connecting sheet is located between the cover plate and the winding core; one end of the connecting sheet is connected with the pole ear of the winding core, and the other end of the connecting sheet is connected with the pole post; the lithium battery cell further comprises an insulating film, and the insulating film is wrapped outside the winding core; the insulating film comprises a fixed part and a wrapping part, the fixed part is positioned in the middle of the insulating film, and the wrapping part is the other part of the insulating film except the fixed part; the fixing part is fixed at the bottom end of the cover plate, the wrapping part wraps the roll core downwards from the bottom end of the cover plate, and the cover plate is fixed above the roll core. The utility model discloses a lithium cell electricity core, existing high production efficiency also can avoid utmost point ear scurrying outward and scald the problem of rolling up the diaphragm of a core inside.

Above-mentioned patent can avoid utmost point ear scurrying outward and scald the problem of rolling up the inside diaphragm of core, but above-mentioned patent can not protect lithium battery cell, and lithium battery cell is all comparatively fragile, when electric core itself received violent collision, appears the condition such as tympanic bulla, weeping very easily, leads to electric core to damage unable the use.

SUMMERY OF THE UTILITY MODEL

The utility model provides a lithium cell square shell electricity core through protection mechanism and sponge frame, can protect electric core main part to increase the protection effect to electric core main part, cushion the impact that electric core main part received, when avoiding electric core main part to receive violent collision, the circumstances such as tympanic bulla, weeping appear very easily, cause electric core main part to damage.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a square-shelled cell for a lithium battery, comprising:

an outer housing;

the battery cell main body is arranged on the inner wall of the outer shell;

the protection mechanism is provided with two groups, each group of protection mechanism comprises a protection plate, two groups of first elastic parts, two groups of second elastic parts and a plurality of sponge strips, each group of first elastic parts is arranged in the outer shell, each group of second elastic parts is symmetrically arranged in the outer shell, the protection plate is arranged on the elastic parts, and each sponge strip is fixedly arranged on one side of the inner wall of the outer shell;

the sponge frame is fixedly arranged at the bottom of the inner wall of the outer shell; and

and the battery cover plate is arranged on the inner wall of the outer shell and close to one side edge.

Further, every group first elastomeric element all includes telescopic link and protection spring, the one end of telescopic link is fixed to be set up in the inner wall one side of shell body, and the other end of telescopic link is fixed to be set up in outer wall one side of protection shield, the outer wall of telescopic link is located to the protection spring cover, and the protection spring is fixed to be set up between shell body and protection shield.

Furthermore, each group of second elastic parts comprises a moving block, a moving groove, a buffer spring and two groups of connecting components, wherein the moving groove is formed in one side of the inner wall of the outer shell, the moving block is embedded in the inner wall of the moving groove in a sliding mode, the buffer spring is fixedly arranged between the moving block and the moving groove, and each group of connecting components are symmetrically arranged on the moving block.

Further, every group coupling assembling all includes installation axle, connecting rod and connecting axle, the fixed outer wall top that sets up in the protection shield of installation axle, the fixed outer wall top that sets up in the movable block of connecting axle, the outer wall of installation axle is located to the one end movable sleeve of connecting rod, and the outer wall of connecting axle is located to the other end movable sleeve of connecting rod.

Furthermore, one end of the battery cell main body is fixedly provided with a positive electrode tab, and one end of the battery cell main body is fixedly provided with a negative electrode tab.

Furthermore, the outer wall of the positive tab penetrates through one side of the outer wall of the battery cover plate in a sliding manner, and the outer wall of the negative tab penetrates through one side of the outer wall of the battery cover plate in a sliding manner.

The utility model provides a lithium cell square shell electricity core. The method has the following beneficial effects: this lithium cell square shell electricity core through protection mechanism and sponge frame, can protect electric core main part to increase the protection effect to electric core main part, cushion the impact that electric core main part received, when avoiding electric core main part to receive violent collision, the circumstances such as tympanic bulla, weeping appear very easily, cause electric core main part to damage.

Drawings

Fig. 1 is a perspective view of the present invention;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is a side cross-sectional view of the present invention;

FIG. 4 is a sectional view of the present invention;

fig. 5 is an enlarged schematic view of a portion a in fig. 4 according to the present invention.

In the figure: 1. an outer housing; 2. a cell main body; 3. a protection plate; 4. a sponge strip; 5. a sponge frame; 6. a battery cover plate; 7. a telescopic rod; 8. a protection spring; 9. installing a shaft; 10. a connecting rod; 11. a connecting shaft; 12. a moving block; 13. a moving groove; 14. a buffer spring; 15. a positive tab; 16. and a negative tab.

Detailed Description

The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: a lithium battery square-casing cell comprising:

an outer housing 1;

the battery cell main body 2 is arranged on the inner wall of the shell body 1;

the protection mechanism is provided with two groups, each group of protection mechanisms comprises a protection plate 3, two groups of first elastic parts, two groups of second elastic parts and a plurality of sponge strips 4, each group of first elastic parts is arranged in the outer shell 1, each group of second elastic parts is symmetrically arranged in the outer shell 1, the protection plate 3 is arranged on the elastic parts, and each sponge strip 4 is fixedly arranged on one side of the inner wall of the outer shell 1;

the sponge frame 5 is fixedly arranged at the bottom of the inner wall of the outer shell 1; and

and the battery cover plate 6 is arranged on the edge of one side, close to the inner wall of the outer shell 1.

In this embodiment: through shell body 1, be used for protecting electric core main part 2, through protection mechanism and sponge frame 5, can protect electric core main part 2, when avoiding electric core main part 2 to receive violent collision, the tympanic bulla appears very easily, circumstances such as weeping, cause electric core main part 2 to damage, two protection shields 3 and a plurality of sponge strip 4 set up respectively around electric core main part 2, can protect and fix electric core main part 2's both sides through the first elastomeric element drive protection shield 3 of multiunit, cooperation second elastomeric element, can further increase the protection to electric core main part 2, alleviate the influence of the vibrations that the collision produced to electric core main part 2, electric core main part 2 is located the top of sponge frame 5, through battery apron 6, can realize the protection to electric core main part 2.

Specifically, each group of first elastic components comprises a telescopic rod 7 and a protection spring 8, one end of the telescopic rod 7 is fixedly arranged on one side of the inner wall of the outer shell 1, the other end of the telescopic rod 7 is fixedly arranged on one side of the outer wall of the protection plate 3, the outer wall of the telescopic rod 7 is sleeved with the protection spring 8, and the protection spring 8 is fixedly arranged between the outer shell 1 and the protection plate 3.

In this embodiment: telescopic link 7 has flexible function, plays the effect of direction to the removal of protection shield 3, through mutually supporting between protection spring 8 and the telescopic link 7, can fix electric core main part 2 and slow down the vibrations that the collision produced, realizes the effect of protection to electric core main part 2.

Specifically, each group of second elastic parts comprises a moving block 12, a moving groove 13, a buffer spring 14 and two groups of connecting components, wherein the moving groove 13 is arranged on one side of the inner wall of the outer shell 1, the moving block 12 is embedded in the inner wall of the moving groove 13 in a sliding manner, the buffer spring 14 is fixedly arranged between the moving block 12 and the moving groove 13, and each group of connecting components are symmetrically arranged on the moving block 12.

In this embodiment: when the protection board 3 moves, under the effect of the connecting assembly, the moving block 12 can be driven to slide in the moving groove 13, and through the buffer spring 14, the impact force applied to the electric core main body 2 is further buffered, so that the protection effect on the electric core main body 2 is increased, and the electric core main body 2 is effectively prevented from being damaged.

Specifically, every group coupling assembling all includes installation axle 9, connecting rod 10 and connecting axle 11, and installation axle 9 is fixed to be set up in the outer wall top of protection shield 3, and connecting axle 11 is fixed to be set up in the outer wall top of movable block 12, and the outer wall of installation axle 9 is located to the one end movable sleeve of connecting rod 10, and the outer wall of connecting axle 11 is located to the other end movable sleeve of connecting rod 10.

In this embodiment: through connecting rod 10, can link together connecting axle 11 on the movable block 12 and the installation axle 9 on the protection shield 3 for when the protection shield 3 removed, can drive movable block 12 and remove.

Specifically, a positive tab 15 is fixedly disposed at one end of the cell main body 2, and a negative tab 16 is fixedly disposed at one end of the cell main body 2.

In this embodiment: the positive electrode tab 15 and the negative electrode tab 16 are contact points when the cell body 2 is charged and discharged.

Specifically, the outer wall of the positive tab 15 is slidably inserted through the outer wall of the battery cover 6, and the outer wall of the negative tab 16 is slidably inserted through the outer wall of the battery cover 6.

In this embodiment: the positive tab 15 and the negative tab 16 facilitate the connection between the cell main body 2 and the circuit board.

During the use, first, electric core main part 2 is placed on sponge frame 5, run through outer wall one side of battery apron 6 with positive ear 15 and negative pole ear 16 on electric core main part 2 again, install battery apron 6 on shell body 1 again, when shell body 1 receives the collision, electric core main part 2 can rock, and drive the protection shield 3 of electric core main part 2 both sides and take place to remove, make telescopic link 7 flexible, under protection spring 8's effect, the impact that electric core main part 2 received is slowed down, when protection shield 3 removed, also drive connecting rod 10 on protection shield 3 both ends and remove, make its one end rotate on connecting axle 11, can drive the other end of connecting rod 10 and rotate on installation axle 9, and drive movable block 12 and slide in shifting chute 13, cooperation buffer spring 14, further cushion the impact that electric core main part 2 received, increase the protection effect to electric core main part 2, effectively avoid electric core main part 2 to receive the damage.

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 cell square-shell electricity core which characterized in that includes:

an outer casing (1);

the battery cell main body (2) is arranged on the inner wall of the outer shell (1);

the protection mechanism is provided with two groups, each group of protection mechanism comprises a protection plate (3), two groups of first elastic parts, two groups of second elastic parts and a plurality of sponge strips (4), each group of first elastic parts is arranged in the outer shell (1), each group of second elastic parts is symmetrically arranged in the outer shell (1), the protection plate (3) is arranged on the elastic parts, and each sponge strip (4) is fixedly arranged on one side of the inner wall of the outer shell (1);

the sponge frame (5) is fixedly arranged at the bottom of the inner wall of the outer shell (1); and

and the battery cover plate (6) is arranged on the inner wall of the outer shell (1) close to one side edge.

2. The lithium battery square-shell battery cell of claim 1, characterized in that: every group first elastomeric element all includes telescopic link (7) and protection spring (8), the one end of telescopic link (7) is fixed to be set up in inner wall one side of shell body (1), and the other end of telescopic link (7) is fixed to be set up in outer wall one side of protection shield (3), the outer wall of telescopic link (7) is located to protection spring (8) cover, and protection spring (8) are fixed to be set up between shell body (1) and protection shield (3).

3. The lithium battery square-shell battery cell of claim 2, characterized in that: each group of second elastic parts comprises a moving block (12), a moving groove (13), a buffer spring (14) and two groups of connecting components, wherein the moving groove (13) is formed in one side of the inner wall of the outer shell (1), the moving block (12) is embedded in the inner wall of the moving groove (13) in a sliding mode, the buffer spring (14) is fixedly arranged between the moving block (12) and the moving groove (13), and each group of connecting components are symmetrically arranged on the moving block (12).

4. The square-shell battery cell of the lithium battery of claim 3, wherein: every group coupling assembling all includes installation axle (9), connecting rod (10) and connecting axle (11), installation axle (9) are fixed to be set up in the outer wall top of protection shield (3), connecting axle (11) are fixed to be set up in the outer wall top of movable block (12), the outer wall of installation axle (9) is located to the one end movable sleeve of connecting rod (10), and the outer wall of connecting axle (11) is located to the other end movable sleeve of connecting rod (10).

5. The lithium battery square-shell battery cell of claim 4, characterized in that: and a positive electrode lug (15) is fixedly arranged at one end of the battery cell main body (2), and a negative electrode lug (16) is fixedly arranged at one end of the battery cell main body (2).

6. The lithium battery square-shell battery cell of claim 5, characterized in that: the outer wall of the positive lug (15) penetrates through one side of the outer wall of the battery cover plate (6) in a sliding mode, and the outer wall of the negative lug (16) penetrates through one side of the outer wall of the battery cover plate (6) in a sliding mode.