CN219246870U

CN219246870U - High-capacity winding lithium battery

Info

Publication number: CN219246870U
Application number: CN202320735695.2U
Authority: CN
Inventors: 刘佳
Original assignee: Sichuan Zhongyi New Energy Materials Co ltd
Current assignee: Sichuan Zhongyi New Energy Materials Co ltd
Priority date: 2023-04-06
Filing date: 2023-04-06
Publication date: 2023-06-23
Anticipated expiration: 2033-04-06

Abstract

The utility model discloses a high-capacity winding type lithium battery, which relates to the technical field of lithium batteries and comprises a lithium battery body, wherein the upper end of the lithium battery body is fixedly connected with a pressure relief structure, and the upper end of the pressure relief structure is fixedly connected with a fixing seat. According to the utility model, through the cooperation of the pressure relief through hole, the piston, the connecting rod, the connecting plate, the spring, the pressure relief pipe and the conical housing, when the temperature in the battery is increased and the pressure is increased, the internal pressure is concentrated into the pressure relief through hole due to the action of the conical housing, the piston and the connecting rod are pushed to move upwards to extrude the spring due to the action of the connecting plate, the top end of the connecting rod is separated from the upper surface of the pressure relief structure, so that the internal pressure is discharged through the pressure relief through hole, and meanwhile, a part of the pressure is discharged through the pressure relief pipe, so that the problems that the internal temperature is too high, the pressure is increased and the pressure cannot be relieved after the high-capacity coiled lithium battery is used for a long time are solved, and the effects of quick pressure relief and safety accident reduction are achieved.

Description

High-capacity winding lithium battery

Technical Field

The utility model relates to the technical field of lithium batteries, in particular to a high-capacity winding type lithium battery.

Background

Currently, the most used batteries are wound batteries and lithium batteries, which are a type of batteries using a nonaqueous electrolyte solution, which uses lithium metal or lithium alloy as a negative electrode material. The wound battery is a battery composed of cells formed by winding. Compared with a lithium battery, the wound battery has super-strong high-rate discharge capacity, good working capacity under partial charge state and no free electrolyte. The following problems exist in the prior art:

according to patent publication number CN218070110U, a high-capacity coiled lithium battery is described, which comprises an outer shell, the top cap has been placed at the shell top, the bottom of top cap is fixed with the pressure relief piece, the inside of pressure relief piece is provided with the second spring through the connecting rod, the bottom of second spring is connected with the piston, the inside of pressure relief piece is provided with the through-hole, the piston is mutually supported with the through-hole, be provided with the pressure relief mouth around the top cap top, pressure relief mouth and pressure relief piece interconnect, the outside top of shell is fixed with elastic buckle, the outside of top cap is fixed with the fixture block, elastic buckle card is on the fixture block. According to the utility model, the pressure release part and the piston are arranged in the battery, so that when the temperature in the battery is increased, the internal pressure of the battery is increased, then the redundant pressure can raise the piston, the piston and the through hole are separated, and the pressure release opening is removed, so that the explosion of the battery caused by the excessive internal pressure of the battery is prevented.

The problem that the internal pressure is increased and pressure cannot be relieved due to the fact that the internal temperature of the current high-capacity winding lithium battery is too high after the current high-capacity winding lithium battery is used for a long time is solved, and safety accidents occur; meanwhile, the problem that the large-capacity winding type lithium battery is inconvenient to carry when being carried and moved is caused by the fact that a carrying structure is not arranged in the current large-capacity winding type lithium battery.

Disclosure of Invention

The present utility model provides a high capacity wound lithium battery to solve the above-mentioned problems set forth in the background art.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the high-capacity winding type lithium battery comprises a lithium battery body, wherein the upper end of the lithium battery body is fixedly connected with a pressure relief structure, and the upper end of the pressure relief structure is fixedly connected with a fixing seat.

The inside of pressure release structure has been seted up the pressure release through-hole, the one end of pressure release through-hole extends to the inside of lithium cell body, the inside swing joint of pressure release through-hole has the piston.

The technical scheme of the utility model is further improved as follows: the upper surface fixedly connected with connecting rod of piston, the upper end of connecting rod and pressure release structure's upper surface overlap joint, the lower extreme fixedly connected with toper housing of pressure release through-hole, the toper housing is in the inside of lithium cell body.

By adopting the technical scheme, the pressure relief device has the advantages that the pressure relief device can be used for rapidly relieving pressure when pressure exists through the mutual cooperation of the piston, the connecting rod, the pressure relief hole and the conical housing.

The technical scheme of the utility model is further improved as follows: one side fixedly connected with connecting plate of piston, the upper surface fixedly connected with spring of connecting plate, the upper end and the inner wall fixed connection of pressure release structure of spring, pressure release structure's inside fixed connection relief pipe.

By adopting the technical scheme, the springs are mutually matched through the connecting plates, so that the springs are extruded.

The technical scheme of the utility model is further improved as follows: the inside of fixing base has been seted up the spout, the inside sliding connection of spout has the slider, the positive fixedly connected with handle of slider, the bayonet socket has been seted up to the inside of fixing base, the fixed surface of fixing base is connected with the connecting seat.

By adopting the technical scheme, the sliding grooves, the sliding blocks, the handles and the buckles are matched with each other in the scheme, so that the portable electronic device is convenient to carry.

The technical scheme of the utility model is further improved as follows: one side fixedly connected with of slider pushes up tight spring, the one end fixedly connected with fixture block of tight spring of pushing up.

By adopting the technical scheme, the clamping limiting position of the handle is blocked by the mutual matching of the ejection spring and the clamping block.

The technical scheme of the utility model is further improved as follows: the inside of connecting seat has seted up little spout, the inside sliding connection of little spout has the slide, the positive fixedly connected with ejector pin of slide, the inside swing joint of surface and connecting seat of ejector pin.

By adopting the technical scheme, the small sliding grooves, the sliding plates and the ejector rods are matched with each other, so that the method has the effect of extruding the ejection springs.

By adopting the technical scheme, compared with the prior art, the utility model has the following technical progress:

1. the utility model provides a high-capacity winding type lithium battery, which adopts the matching of a pressure relief through hole, a piston, a connecting rod, a connecting plate, a spring, a pressure relief pipe and a conical housing, when the temperature inside the battery becomes high and the pressure is increased, the pressure inside the battery is concentrated into the pressure relief through hole due to the action of the conical housing, the piston and the connecting rod are pushed to move upwards to extrude the spring due to the action of the connecting plate, the top end of the connecting rod is separated from the upper surface of a pressure relief structure, so that the pressure inside the battery is discharged through the pressure relief through hole, and meanwhile, part of the pressure is discharged through the pressure relief pipe, so that the problems that the temperature inside the high-capacity winding type lithium battery is too high and the pressure is increased and the pressure cannot be relieved after the battery is used for a long time are solved, and the effects of rapidly relieving the pressure and reducing the occurrence of safety accidents are achieved.

2. The utility model provides a high-capacity winding type lithium battery, which adopts the mutual matching of a chute, a sliding block, a tightening spring, a clamping block, a bayonet, a connecting seat and a handle, when the high-capacity winding type lithium battery needs to be carried and moved, the handle is held by hands to be pulled upwards, the sliding block slides in the chute, and when the sliding block moves at the top end of the chute, the clamping block is pushed to the inside of the bayonet due to the effect of the tightening spring, so that the position of the sliding block is limited, the problem that the high-capacity winding type lithium battery needs to be carried and moved inconveniently is solved, and the effect of simplicity in operation during carrying is achieved.

Drawings

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

fig. 2 is a schematic diagram of a pressure relief structure and a cross-sectional structure of a lithium battery body according to the present utility model;

FIG. 3 is a schematic cross-sectional view of a fixing base according to the present utility model;

fig. 4 is a schematic cross-sectional view of a connector according to the present utility model.

In the figure: 1. a lithium battery body; 2. a pressure relief structure; 21. a pressure relief through hole; 22. a piston; 23. a connecting rod; 24. a connecting plate; 25. a spring; 26. a pressure relief tube; 27. a conical housing; 3. a fixing seat; 31. a chute; 32. a slide block; 33. a spring is tightly propped; 34. a clamping block; 35. a bayonet; 36. a connecting seat; 361. a small chute; 362. a slide plate; 363. a push rod; 37. a handle.

Detailed Description

The utility model is further illustrated by the following examples:

example 1

As shown in fig. 1-4, the utility model provides a high-capacity winding lithium battery, a lithium battery body 1, a pressure relief structure 2 is fixedly connected to the upper end of the lithium battery body 1, a fixing seat 3 is fixedly connected to the upper end of the pressure relief structure 2, a pressure relief through hole 21 is formed in the pressure relief structure 2, one end of the pressure relief through hole 21 extends to the interior of the lithium battery body 1, a piston 22 is movably connected to the interior of the pressure relief through hole 21, a connecting rod 23 is fixedly connected to the upper surface of the piston 22, the upper end of the connecting rod 23 is overlapped with the upper surface of the pressure relief structure 2, a conical housing 27 is fixedly connected to the lower end of the pressure relief through hole 21, the conical housing 27 is arranged in the interior of the lithium battery body 1, a connecting plate 24 is fixedly connected to one side of the piston 22, a spring 25 is fixedly connected to the upper surface of the connecting plate 24, the upper end of the spring 25 is fixedly connected to the inner wall of the pressure relief structure 2, and a pressure relief pipe 26 is fixedly connected to the interior of the pressure relief structure 2.

In this embodiment, when the high-capacity wound lithium battery becomes high in internal temperature and increases in pressure after long-time use, the internal pressure is concentrated into the pressure release through hole 21 due to the action of the tapered housing 27, and the piston 22 and the connecting rod 23 are pushed to move upward to press the spring 25 due to the action of the connecting plate 24, at this time, the spring 25 is in a contracted state, the top end of the connecting rod 23 is separated from the upper surface of the pressure release structure 2, so that the internal pressure is discharged through the pressure release through hole 21, and at the same time, a part of the pressure is discharged through the pressure release pipe 26, and the pressure release pipe 26 is set to accelerate the pressure release speed, and at this time, the spring 25 moves downward from the contracted state to the lifted state due to the action of the elasticity of the spring 25 after the pressure release is ended, so that the piston 22 and the connecting rod 23 are returned to the non-pressure release state.

Example 2

As shown in fig. 1-4, on the basis of embodiment 1, the present utility model provides a technical solution: preferably, the inside of fixing base 3 has seted up spout 31, and the inside sliding connection of spout 31 has slider 32, and the front fixedly connected with handle 37 of slider 32, the bayonet socket 35 has been seted up to the inside of fixing base 3, and the fixed surface of fixing base 3 is connected with connecting seat 36, and one side fixedly connected with of slider 32 pushes up tight spring 33, and the one end fixedly connected with fixture block 34 of pushing up tight spring 33.

In this embodiment, when the high-capacity wound lithium battery needs to be carried and moved, the handle 37 is held by a hand to pull upwards and slide the slider 32 in the chute 31, and when the slider 32 moves at the top end of the chute 31, the spring 33 is pushed from the contracted state to the lifted state by the action of the spring 33, so that the clamping block 34 is pushed and reaches the inside of the bayonet 35, the position of the slider 32 is limited, the carrying is convenient, and when the use is finished, the handle 37 is contracted inside by the action of the connecting seat 36.

Example 3

As shown in fig. 1-4, on the basis of embodiment 2, the present utility model provides a technical solution: preferably, a small sliding groove 361 is formed in the connecting seat 36, a sliding plate 362 is slidably connected in the small sliding groove 361, a push rod 363 is fixedly connected to the front surface of the sliding plate 362, and the surface of the push rod 363 is movably connected with the inside of the connecting seat 36.

In this embodiment, when the use is completed, the push rod 363 is pushed to slide both ends of the slide plate 362 in the small slide groove 361, so that the top end of the push rod 363 directly contacts the clamp block 34, and the push rod 363 is pushed to press the jack spring 33, at this time, the jack spring 33 is retracted from the jack state to the retracted state, the clamp block 34 is retracted in the slide groove 31, and then the slide block 32 is moved downward by pressing down the grip 37, so that the grip 37 is retracted in the interior.

The working principle of the high-capacity wound lithium battery will be described in detail.

As shown in fig. 1 to 4, when the high-capacity wound lithium battery becomes high in internal temperature and increases in pressure after long-time use, the pressure is applied to the pressure release through hole 21 due to the action of the tapered cover 27, and the piston 22 and the connecting rod 23 are pushed to move so as to squeeze the spring 25 due to the action of the connecting plate 24, and the pressure is released rapidly through the pressure release through hole 21 and the pressure release pipe 26, when carrying is required, the grip 37 is pulled, and the slide block 32 slides in the inside of the chute 31, and the position of the grip is restricted by the action of the pushing spring 33 and the bayonet 35, so that the grip 37 stretches out and stretches outside and is convenient to carry.

The foregoing utility model has been generally described in great detail, but it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, it is intended to cover modifications or improvements within the spirit of the inventive concepts.

Claims

1. The utility model provides a high-capacity coiling formula lithium cell, includes lithium cell body (1), its characterized in that: the lithium battery comprises a lithium battery body (1), wherein the upper end of the lithium battery body (1) is fixedly connected with a pressure relief structure (2), and the upper end of the pressure relief structure (2) is fixedly connected with a fixing seat (3);

the lithium battery is characterized in that a pressure relief through hole (21) is formed in the pressure relief structure (2), one end of the pressure relief through hole (21) extends to the inside of the lithium battery body (1), and a piston (22) is movably connected in the pressure relief through hole (21).

2. The high capacity wound lithium battery of claim 1, wherein: the lithium battery is characterized in that a connecting rod (23) is fixedly connected to the upper surface of the piston (22), the upper end of the connecting rod (23) is overlapped with the upper surface of the pressure relief structure (2), a conical housing (27) is fixedly connected to the lower end of the pressure relief through hole (21), and the conical housing (27) is arranged in the lithium battery body (1).

3. The high capacity wound lithium battery of claim 2, wherein: one side fixedly connected with connecting plate (24) of piston (22), the upper surface fixedly connected with spring (25) of connecting plate (24), the upper end of spring (25) and the inner wall fixed connection of relief structure (2), the inside fixed connection relief pipe (26) of relief structure (2).

4. The high capacity wound lithium battery of claim 1, wherein: the novel fixing seat is characterized in that a sliding groove (31) is formed in the fixing seat (3), a sliding block (32) is connected to the sliding groove (31) in a sliding mode, a grip (37) is fixedly connected to the front face of the sliding block (32), a bayonet (35) is formed in the fixing seat (3), and a connecting seat (36) is fixedly connected to the surface of the fixing seat (3).

5. The high capacity lithium wound battery of claim 4, wherein: one side of the sliding block (32) is fixedly connected with a jacking spring (33), and one end of the jacking spring (33) is fixedly connected with a clamping block (34).

6. The high capacity lithium wound battery of claim 4, wherein: the inside of connecting seat (36) has seted up little spout (361), the inside sliding connection of little spout (361) has slide (362), the front fixedly connected with ejector pin (363) of slide (362), the inside swing joint of surface and connecting seat (36) of ejector pin (363).