CN218957899U

CN218957899U - Protective lithium iron phosphate battery cell

Info

Publication number: CN218957899U
Application number: CN202222233602.4U
Authority: CN
Inventors: 吴鹏
Original assignee: Anhui Duokun New Energy Technology Co ltd
Current assignee: Anhui Duokun New Energy Technology Co ltd
Priority date: 2022-08-24
Filing date: 2022-08-24
Publication date: 2023-05-02
Anticipated expiration: 2032-08-24

Abstract

The utility model discloses a protective lithium iron phosphate battery cell, which comprises a shell and a shell cover, wherein the top end of the shell is fixed with the shell cover through screws, a battery cell groove is formed in the middle of the inside of the shell, a protective shell is fixedly arranged in the shell in a clamping manner, the protective shell is fixedly arranged on the outer side of a battery cell body, a protective component is arranged in the side wall of the shell, the protective component comprises a first arc-shaped soft plate, a second arc-shaped soft plate and a reinforcing column, the middle of one opposite sides of the first arc-shaped soft plate and the second arc-shaped soft plate are welded, the other sides of the first arc-shaped soft plate and the second arc-shaped soft plate are respectively welded on the two sides of the inner side wall of the shell, the reinforcing column is fixedly arranged in the side wall of the shell, and the protective shell is fixedly arranged in the outer side of the battery cell body through arranging a plurality of groups of protective components in the inner cavity of the shell, so that the protective effect on the battery cell body is further enhanced, the normal use of the battery cell body is guaranteed, and the protection performance and the service life of the battery cell are improved.

Description

Protective lithium iron phosphate battery cell

Technical Field

The utility model relates to the technical field of lithium iron phosphate battery cells, in particular to a protective lithium iron phosphate battery cell.

Background

The left side of the lithium iron phosphate battery is a positive electrode formed by lithium ion battery materials with an olivine structure, and the positive electrode is connected with an aluminum foil. The right side is a battery cathode composed of carbon (graphite) and is connected with the battery cathode by copper foil. In the middle is a polymeric separator that separates the positive electrode from the negative electrode, through which lithium ions can pass and through which electrons cannot pass. The existing lithium iron phosphate battery core has poor protection effect and potential safety hazard, if the battery core is extruded by sharp objects and collides, the inner core of the battery core is possibly damaged and the battery core is possibly damaged, and electrolyte solution is leaked, so that the overall safety performance of the lithium iron phosphate battery core is influenced.

Through searching, in the prior art, chinese patent application number: CN202022810638.5, filing date: 2020-11-30, a lithium iron phosphate battery cell, which relates to the technical field of lithium iron phosphate batteries, in particular to a lithium iron phosphate battery cell; according to the utility model, the inner protective shell is arranged on the outer side of the battery core body, the fixing agent is sprayed at the bottom of the inner protective shell, the lower end of the battery core body is adhered to the upper end of the fixing agent, the buffer pad is detachably connected between the battery core body and the inner protective shell, the outer protective shell is fixedly connected with the outer protective shell through the second reinforcing column, the cavity is arranged between the inner protective shell and the outer protective shell, the damping sponge is filled in the cavity, and the radiating fins are welded on the outer side surface of the outer protective shell.

The device still has the following drawbacks:

the device protects lithium iron phosphate battery cell through setting up interior protective housing, first spliced pole, second spliced pole and outer protective housing, protects comparatively simple singleness through setting up the spliced pole to the battery cell, plays better guard action, reduces the protection effect to the battery cell.

Disclosure of Invention

The utility model aims to provide a protective lithium iron phosphate battery cell, which further enhances the protective effect on the battery cell body, ensures the normal use of the battery cell body and improves the protection performance and service life of the battery cell by arranging a plurality of groups of protective components in the inner cavity of the inner shell and fixedly arranging a protective shell on the outer side of the battery cell body so as to solve the problems in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a protection type lithium iron phosphate battery cell includes shell and cap, the top and the cap of shell pass through the screw fixation, the inside department of centering of shell is equipped with the electric core groove, the inside block of shell is provided with the protecting crust, the protecting crust is fixed to be set up in the electric core body outside, the inside protective component that is provided with of lateral wall of shell, the protective component includes first arc soft board, second arc soft board and spliced pole, first arc soft board and the relative one side department of centering of second arc soft board weld mutually, first arc soft board and second arc soft board opposite side weld respectively in the inside both sides of lateral wall of shell, the inside fixed mounting of lateral wall of shell has the spliced pole.

Preferably, an inner cavity is formed in the side wall of the shell, and inner walls on two sides of the inner cavity are welded with the other sides of the first arc-shaped soft board and the second arc-shaped soft board.

Preferably, damping pads are symmetrically stuck on the inner walls of the two sides of the inner cavity, and a plurality of reinforcing columns are uniformly and fixedly arranged between the damping pads.

Preferably, the protection components are arranged in a plurality of groups, and the plurality of groups of protection components are uniformly arranged in the inner cavity.

Preferably, a cell groove is formed in the middle of the shell, and the cell groove is clamped with the protective shell.

Preferably, a sealing groove is formed in the top end of the shell, the sealing groove is in sliding connection with the side wall of the sealing block, and the sealing block is welded on the side edge of the bottom surface of the shell cover.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model provides a protective lithium iron phosphate battery cell, which is characterized in that a protective shell is fixedly arranged on the outer side of a battery cell body, so that a double-layer protective structure is formed for the battery cell body, and the overall safety performance is improved.

The design of first arc soft board, second arc soft board and reinforcement post is set up inside the lateral wall inner chamber of shell, makes it can form fine guard action to the electric core body, fine avoided because the electric core body bumps and is impaled the problem by sharp object extrusion, strengthen the protection to the electric core body, improved the life and the protectiveness of electric core body.

Drawings

FIG. 1 is a schematic view of the overall exploded structure of the present utility model;

FIG. 2 is a schematic cross-sectional view of the housing of the present utility model;

fig. 3 is an enlarged schematic view of the structure of the present utility model at a.

Reference numerals in the drawings: 1. a housing; 2. a cover; 3. a cell slot; 4. a cell body; 5. a protective shell; 6. a damping pad; 7. a reinforcing column; 8. sealing grooves; 9. a sealing block; 10. an inner cavity; 11. a first arc-shaped soft board; 12. and a second arc-shaped soft board.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model provides a protective lithium iron phosphate battery cell as shown in fig. 1-3, which comprises a shell 1 and a shell cover 2, wherein the top end of the shell 1 is fixed with the shell cover 2 through screws, mounting holes are correspondingly formed in the four corners of the shell cover 2 and the top end of the shell 1 and are used for fixing the screws, a sealing groove 8 is formed in the top end of the shell 1, the sealing groove 8 is in sliding connection with the side wall of a sealing block 9, the sealing block 9 is welded on the side edge of the bottom surface of the shell cover 2, the sealing block 9 on the bottom surface is inserted into the sealing groove 8 before the shell cover 2 is mounted, and the connection between the top end of the shell 1 and the shell cover 2 is sealed while limiting the mounting holes.

The inside block of shell 1 is provided with protecting crust 5, and the inside department of centering of shell 1 is equipped with electric core groove 3, and electric core groove 3 and protecting crust 5 looks block is convenient for install and dismantle protecting crust 5 through the inside looks block of protecting crust 5 and electric core groove 3.

The inside protective component that is provided with of lateral wall of shell 1 forms bilayer protection architecture to electric core body 4 through the setting of shell 1 and protecting crust 5, and protective component sets up the multiunit, and inner chamber 10 has been seted up to the inside lateral wall of shell 1, and multiunit protective component evenly sets up in the inside of inner chamber 10.

The protection component comprises a first arc-shaped soft board 11, a second arc-shaped soft board 12 and a reinforcing column 7, wherein the opposite sides of the first arc-shaped soft board 11 and the second arc-shaped soft board 12 are welded together in the middle, the other sides of the first arc-shaped soft board 11 and the second arc-shaped soft board 12 are respectively welded on the two sides of the inner side wall of the shell 1, the inner walls of the two sides of the inner cavity 10 are welded with the other sides of the first arc-shaped soft board 11 and the second arc-shaped soft board 12, the arc-shaped soft board has an elastic effect, the force buffering effect can be achieved, the reinforcing column 7 is fixedly mounted on the inner side wall of the shell 1, and the first arc-shaped soft board 11, the second arc-shaped soft board 12 and the reinforcing column 7 are arranged in the inner cavity 10, so that the protection effect on the cell body 4 can be well formed, the problem that the cell body 4 is collided and is extruded and pierced by sharp objects is well avoided, the protection on the cell body 4 is enhanced, and the service life and the protection performance of the cell body 4 are improved.

Damping pads 6 are symmetrically stuck to the inner walls of the two sides of the inner cavity 10, a plurality of reinforcing columns 7 are uniformly and fixedly arranged between the damping pads 6, the reinforcing columns 7 are fixedly arranged between the damping pads 6, and the protection effect on the battery cell body 4 is further enhanced.

When the device is integrally installed, firstly, the protective shell 5 is inserted into the cell groove 3, then the sealing block 9 on the bottom surface of the shell cover 2 is inserted into the sealing groove 8 in the top end of the shell 1, and then the shell 1 and the shell cover 2 are fixedly connected through screws, so that the device is quickly installed integrally.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a protection type lithium iron phosphate electricity core, includes shell (1) and cap (2), its characterized in that: the top of shell (1) passes through the screw fixation with cap (2), the inside block of shell (1) is provided with protecting crust (5), protecting crust (5) are fixed to be set up in the electric core body (4) outside, the inside protective component that is provided with of lateral wall of shell (1), protective component includes first arc soft board (11), second arc soft board (12) and spliced pole (7), the department of centering in opposite one side of first arc soft board (11) and second arc soft board (12) welds mutually, first arc soft board (11) and second arc soft board (12) opposite side weld respectively in the inside both sides of lateral wall of shell (1), the inside fixed mounting of lateral wall of shell (1) has spliced pole (7).

2. The protective lithium iron phosphate battery cell according to claim 1, wherein: an inner cavity (10) is formed in the side wall of the shell (1), and the inner walls of the two sides of the inner cavity (10) are welded with the other sides of the first arc-shaped soft board (11) and the second arc-shaped soft board (12).

3. The protective lithium iron phosphate battery cell according to claim 2, wherein: damping pads (6) are symmetrically adhered to the inner walls of the two sides of the inner cavity (10), and a plurality of reinforcing columns (7) are uniformly and fixedly arranged between the damping pads (6).

4. The protective lithium iron phosphate battery cell according to claim 1, wherein: the protection components are arranged in a plurality of groups, and the plurality of groups of protection components are uniformly arranged in the inner cavity (10).

5. The protective lithium iron phosphate battery cell according to claim 1, wherein: the battery cell groove (3) is formed in the middle of the shell (1), and the battery cell groove (3) is clamped with the protective shell (5).

6. The protective lithium iron phosphate battery cell according to claim 1, wherein: the top of shell (1) is inside to have seted up seal groove (8), the lateral wall sliding connection of seal groove (8) and sealing block (9), sealing block (9) welding is in the bottom surface side of cap (2).