CN219575712U

CN219575712U - Novel positive and negative electrode structure of lithium battery

Info

Publication number: CN219575712U
Application number: CN202320647291.8U
Authority: CN
Inventors: 贾卫强
Original assignee: Qingdao Purcell Energy Technology Co ltd
Current assignee: Qingdao Purcell Energy Technology Co ltd
Priority date: 2023-03-29
Filing date: 2023-03-29
Publication date: 2023-08-22
Anticipated expiration: 2033-03-29

Abstract

The utility model discloses a novel anode and cathode structure of a lithium battery, and relates to the technical field of lithium battery equipment. The novel lithium battery anode and cathode structure comprises a battery shell and an anode assembly, wherein a cathode cover plate is fixedly arranged on the top surface of the battery shell, and a cathode assembly is arranged on the top surface of the cathode cover plate. This novel positive and negative electrode structure of lithium cell is when using, when pushing down the shell body top at the fixed column through the exhaust groove and the exhaust through-hole that set up, exhaust to the inside gas of battery case, the outer wall of the movable column that set up is mutually laminated with the inner wall of shell body can not take place the skew when rebounding, carry out the joint fixedly to the spacing ring through draw-in groove, spacing groove, little spring and the fixture block that set up, reach the fixed effect of relief joint through the cooperation of annular spout that sets up, the ring channel, swivel becket and rope, can install the dismantlement to the spacing ring, after shell body inside entering dust, openable spacing ring clear up the inner wall.

Description

Novel positive and negative electrode structure of lithium battery

Technical Field

The utility model relates to the technical field of lithium battery equipment, in particular to a novel anode and cathode structure of a lithium battery.

Background

Lithium batteries are batteries using lithium metal or lithium alloy as positive/negative electrode materials and nonaqueous electrolyte solutions, and the lithium metal has very high requirements on environment due to the very active chemical characteristics of the lithium metal, so that the lithium ion batteries are increasingly widely applied along with the continuous development of electronic technology, and the trend that electronic products pursue small and portable shapes and continuous working time are as long as possible.

The current lithium cell can produce gas in the in-process of precharge, and in order to avoid the gas that produces to produce the influence to the lithium cell of inside can generally set up exhaust subassembly and advance the exhaust, for example grant the chinese patent of bulletin number CN215578933U, disclose a novel lithium cell positive negative pole structure and lithium cell, this positive negative pole structure only need inwards press negative pole exhaust apparatus when the battery needs the exhaust, can accomplish the work of exhausting, and the device makes whole exhaust process more convenient, has also promoted the security performance of battery by a wide margin.

However, in the negative electrode assembly of the positive and negative electrode structure of the lithium battery, if the outer wall of the movable column is attached to the inner wall of the outer shell, when the movable column is pressed down, the gas inside the battery shell cannot be discharged through the outer shell, if a certain gap exists between the outer wall of the movable column and the inner wall of the outer shell, when the movable column is pressed down and the exhaust is completed to rebound under the action of the spring, the gas cannot be ensured to be just aligned with the through hole at the top of the outer shell, so that the inside of the outer shell cannot be sealed, dust can enter the battery shell to affect the operation of the lithium battery, and therefore, the novel positive and negative electrode structure of the lithium battery is provided.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a novel anode and cathode structure of a lithium battery, and solves the problems mentioned in the background art.

In order to achieve the above purpose, the utility model is realized by the following technical scheme: the utility model provides a novel positive and negative pole structure of lithium cell, includes battery case and anodal subassembly, battery case's top fixed surface installs the negative pole apron, the top surface of negative pole apron is provided with negative pole subassembly, negative pole subassembly includes:

the shell is fixedly arranged on the top surface of the negative electrode cover plate, an exhaust groove is formed in the bottom surface of the shell, two exhaust through holes are respectively formed in the inner walls of the left side and the right side of the shell, and a filter frame is fixedly arranged at the top air outlet of each exhaust through hole;

the large spring is fixedly arranged on the bottom surface inside the outer shell, the top end of the large spring is fixedly provided with a movable column, the top of the movable column is fixedly provided with a fixed column, and the joint of the movable column and the fixed column is provided with a sealing ring;

the limiting ring is arranged at the top end of the inner part of the outer shell body, and two clamping grooves are formed in the surfaces of the left side and the right side of the limiting ring;

the limiting grooves are formed in the left side and the right side of the outer shell respectively, a small spring is fixedly arranged on one side, far away from the limiting ring, of the inner wall of the limiting groove, a clamping block is fixedly arranged at one end, close to the limiting ring, of the small spring, and a rope is fixedly connected to one side, close to the small spring, of the clamping block;

the annular chute is arranged at the upper end of the outer side of the outer shell, an annular groove is arranged on the surface of one side, close to the limiting ring, of the inner portion of the annular chute, and a rotating ring is connected inside the annular chute in a sliding mode.

Preferably, the inside cuboid structure that is of shell body sets up, the exhaust groove communicates each other with the shell body is inside through two exhaust through-holes.

Preferably, the outer wall of the movable column is mutually attached to the inner wall of the outer shell.

Preferably, the outer wall of the fixed column is mutually attached to the inner wall of the limiting ring.

Preferably, one end of the rope far away from the clamping block penetrates through the inner wall of the outer shell and is fixedly connected with the inner wall of the rotating ring.

Preferably, the sizes of the clamping blocks are respectively matched with the sizes of the limiting grooves and the clamping grooves.

The utility model provides a novel anode and cathode structure of a lithium battery. The beneficial effects are as follows:

(1) When this novel positive and negative electrode structure of lithium cell is in use, push down through the exhaust groove and the exhaust through-hole that set up when opening shell body top at the fixed column, exhaust to the inside gas of battery case, the outer wall of the movable column that set up is mutually laminated with the inner wall of shell body can not take place the skew when the resilience, filters the dust through the filtration frame that sets up, avoids not in time closing after the exhaust is accomplished and leads to the dust to get into the inside work that influences the lithium cell of battery case.

(2) When the novel lithium battery anode and cathode structure is used, the limiting ring is clamped and fixed through the clamping groove, the limiting groove, the small spring and the clamping block, the clamping and fixing effect can be achieved through the matching of the annular sliding groove, the annular groove, the rotating ring and the rope, the limiting ring can be assembled and disassembled, and after dust enters the inner part of the outer shell, the limiting ring can be opened to clean the inner wall.

Drawings

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

FIG. 2 is a schematic view of the structure of the utility model with the front section of the outer housing;

FIG. 3 is a schematic diagram of the structure of the present utility model at A;

fig. 4 is a schematic structural diagram of the present utility model at B.

In the figure: 1. a battery case; 2. a positive electrode assembly; 3. a negative electrode cover plate; 4. a negative electrode assembly; 401. an outer housing; 402. an exhaust groove; 403. an exhaust through hole; 404. a filter frame; 405. a large spring; 406. a movable column; 407. a seal ring; 408. fixing the column; 409. a limiting ring; 410. a clamping groove; 411. a limit groove; 412. a small spring; 413. a clamping block; 414. a rope; 415. an annular chute; 416. an annular groove; 417. and rotating the ring.

Description of the embodiments

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.

Referring to fig. 1-4, the present utility model provides a technical solution: the utility model provides a novel positive and negative pole structure of lithium cell, includes battery case 1 and anodal subassembly 2, anodal subassembly 2 includes: the positive electrode assembly 2 is similar to the principle of the positive electrode assembly mentioned in the Chinese patent (a novel positive electrode structure of a lithium battery and a novel lithium battery) with the bulletin number of CN215578933U, the achieved effect is the same, the method is an existing technical means disclosed in the field, and the positive electrode assembly is not repeated.

The top surface fixed mounting of battery housing 1 has negative pole apron 3, and the top surface of negative pole apron 3 is provided with negative pole subassembly 4, and negative pole subassembly 4 includes: the shell 401, big spring 405, the spacing ring 409, spacing groove 411 and annular spout 415, shell 401 fixed mounting is at the top surface of negative pole apron 3, shell 401 inside is cuboid structure setting, exhaust groove 402 has been seted up to the bottom surface of shell 401, two exhaust through-holes 403 have been seted up respectively in the shell 401 left and right sides inner wall, exhaust groove 402 communicates each other with shell 401 inside through two exhaust through-holes 403, the top gas outlet department fixed mounting of exhaust through-holes 403 has filter frame 404, the filter frame 404 of setting can filter the dust that gets into shell 401 inside when not directly loosening fixed column 408 after the exhaust is accomplished, dust that its surface filtered out can be scraped by sealing washer 407 when movable column 406 upwards kick-backs, finally the dust can accumulate the top of sealing washer 407, big spring 405 fixed mounting is at shell 401 inside bottom surface.

The top fixed mounting of big spring 405 has movable post 406, the outer wall of movable post 406 is laminated each other with shell 401 inner wall, the top fixed mounting of movable post 406 has fixed post 408, the junction of movable post 406 and fixed post 408 is provided with sealing washer 407, spacing ring 409 sets up at the inside top of shell 401, the outer wall of spacing ring 409 is laminated each other with the inner wall of shell 401, the outer wall of fixed post 408 is laminated each other with the inner wall of spacing ring 409, just can drive movable post 406 and move down when pressing down fixed post 408, the in-process that movable post 406 all can not take place the skew under the spacing of shell 401 at the in-process that rises and descends, when movable post 406 moves down and makes the top gas outlet of exhaust through-hole 403 expose, the inside gas that produces of battery case 1 just can reach the inside of shell 401 through exhaust groove 402 and exhaust through-hole 403 and finally pass through spacing ring 409, two draw-in grooves 410 have been seted up on the left and right sides surface of spacing ring 409, the quantity of spacing groove 411 is two, two spacing grooves 411 are seted up respectively at the inner wall surfaces of shell 401 left and right sides.

The side of spacing groove 411 inner wall keeping away from spacing ring 409 fixed mounting has little spring 412, the one end fixed mounting that little spring 412 is close to spacing ring 409 has fixture block 413, when inserting inside shell 401 with spacing ring 409, the fixture block 413 can be extruded earlier to spacing ring 409 and compression little spring 412 makes fixture block 413 get into inside spacing groove 411, when the top surface of spacing ring 409 and the top surface of shell 401 are located same horizontal line, fixture block 413 can pop out under the elasticity effect of little spring 412 and get into inside draw-in groove 410, carry out the joint fixed to spacing ring 409, in the initial state, big spring 405 is in half compression state, can jack up movable post 406 upwards, make sealing washer 407 and the bottom surface of spacing ring 409, the inside of shell 401 and the outer wall laminating of fixed post 408 are inseparabler, make the sealed effect better, the size of fixture block 413 is mutually adapted with the size of spacing groove 411 and draw-in groove 410 respectively.

One side surface fixed connection rope 414 that fixture block 413 is close to little spring 412, annular runner 415 is seted up in the outside upper end of shell body 401, annular groove 416 has been seted up to the inside one side surface that is close to spacing ring 409 of annular runner 415, the inside sliding connection of annular runner 415 has a swivel ring 417, the one end that fixture block 413 was kept away from to rope 414 runs through the inner wall of shell body 401 and the inner wall fixed connection of swivel ring 417, swivel ring 417 can drive rope 414 and remove, thereby draw fixture block 413 into spacing groove 411 inside through rope 414 and release the joint fixed to spacing ring 409, big spring 405 can rebound this moment, with movable column 406, sealing washer 407, fixed column 408 and spacing ring 409 jack-up upwards, can take off spacing ring 409 at this moment and clear up the dust at sealing washer 407 top.

In the utility model, when the lithium battery is used, the limiting ring 409 is plugged into the outer shell 401, the limiting ring 409 is clamped and fixed through the matching of the clamping blocks 413 and the small springs 412, when the gas generated by the lithium battery is required to be exhausted, the movable column 406 is driven to move downwards to compress the large springs 405 by pressing down the fixed columns 408, the top gas outlet of the exhaust through holes 403 is exposed, the gas generated in the battery shell 1 reaches the inner part of the outer shell 401 through the exhaust grooves 402 and the exhaust through holes 403 and finally is exhausted through the limiting ring 409, dust entering the inner part of the outer shell 401 when the fixed columns 408 are not directly loosened after the exhaust is finished can be filtered through the filtering frame 404, the filtered dust on the surface of the dust can be scraped by the sealing ring 407 when the movable columns 406 rebound upwards, finally the dust can be accumulated on the top of the sealing ring 407, when the dust is required to be cleaned, the clamping blocks 413 are pulled into the inner part of the limiting groove 411 by the ropes 414, the clamping and the large springs 405 are rebound, the movable columns 406, the sealing rings 408 and the limiting ring 409 are lifted upwards, and the top of the sealing ring 407 can be cleaned.

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 novel positive and negative pole structure of lithium cell, includes battery case (1) and anodal subassembly (2), its characterized in that: the top surface fixed mounting of battery case (1) has negative pole apron (3), the top surface of negative pole apron (3) is provided with negative pole subassembly (4), negative pole subassembly (4) include:

the negative electrode cover plate comprises an outer shell body (401), wherein the outer shell body (401) is fixedly arranged on the top surface of the negative electrode cover plate (3), an exhaust groove (402) is formed in the bottom surface of the outer shell body (401), two exhaust through holes (403) are respectively formed in the inner walls of the left side and the right side of the outer shell body (401), and a filter frame (404) is fixedly arranged at the top air outlet of the exhaust through holes (403);

the large spring (405), the large spring (405) is fixedly arranged on the inner bottom surface of the outer shell (401), the top end of the large spring (405) is fixedly provided with a movable column (406), the top of the movable column (406) is fixedly provided with a fixed column (408), and the joint of the movable column (406) and the fixed column (408) is provided with a sealing ring (407);

the limiting ring (409), the limiting ring (409) is arranged at the top end inside the outer shell (401), and two clamping grooves (410) are formed in the surfaces of the left side and the right side of the limiting ring (409);

the limiting grooves (411), the number of the limiting grooves (411) is two, the two limiting grooves (411) are respectively formed in the inner wall surfaces of the left side and the right side of the outer shell body (401), a small spring (412) is fixedly arranged on one side, far away from the limiting ring (409), of the inner wall of the limiting groove (411), a clamping block (413) is fixedly arranged at one end, close to the limiting ring (409), of the small spring (412), and a rope (414) is fixedly connected with one side surface, close to the small spring (412), of the clamping block (413);

the annular chute (415), annular chute (415) are seted up in shell body (401) outside upper end, annular chute (415) are inside to be close to one side surface of spacing ring (409) and have been seted up ring channel (416), annular chute (415) inside sliding connection has swivel becket (417).

2. The novel lithium battery anode and cathode structure according to claim 1, wherein: the inside cuboid structure that is of shell body (401) sets up, exhaust groove (402) are through two exhaust through-holes (403) and the inside intercommunication of shell body (401).

3. The novel lithium battery anode and cathode structure according to claim 1, wherein: the outer wall of the movable column (406) is mutually attached to the inner wall of the outer shell (401).

4. The novel lithium battery anode and cathode structure according to claim 1, wherein: the outer wall of the fixed column (408) is mutually attached to the inner wall of the limiting ring (409).

5. The novel lithium battery anode and cathode structure according to claim 1, wherein: one end of the rope (414) far away from the clamping block (413) penetrates through the inner wall of the outer shell (401) and is fixedly connected with the inner wall of the rotating ring (417).

6. The novel lithium battery anode and cathode structure according to claim 1, wherein: the sizes of the clamping blocks (413) are respectively matched with the sizes of the limiting grooves (411) and the clamping grooves (410).