Polymer lithium battery

Abstract

The utility model discloses a polymer lithium battery, which belongs to the field of batteries and comprises a battery main body, a puncture-proof polyethylene film is arranged on the outer wall of the battery main body, a tab communicated with an electric appliance is arranged on one side of the battery main body, and a battery chip is arranged above the tab. Compared with the prior art, the lithium ion battery has the advantages that the connection mode of the tabs and the battery chip is changed into sliding connection convenient to detach through the tab connecting sleeve, and the detachable multi-structure protective shell for fixing the battery chip is connected with the side wall of the battery main body through a buckle structure; therefore, the device can be disassembled in sections while ensuring stable connection of the battery chips, so that materials capable of being continuously used are saved.

Description

Technical Field

[0001] The utility model relates to the field of batteries, and specifically refers to a polymer lithium battery. Background Art

[0002] With the development of human technology, the storage of electric power has gradually evolved from the earliest Daniell cells, lead-acid batteries, and silver oxide batteries to the currently most commonly used lithium batteries. Among the many types of lithium batteries, polymer lithium batteries are widely used in various electronic devices due to their high energy, miniaturization, and light weight.

[0003] The existing polymer lithium battery consists of a battery body, a polyethylene film on the outer surface of the battery (used to prevent the internal battery core from leaking after the battery is stabbed), and a tab connecting the electrodes of the battery body. To ensure the safe use of the battery, a battery chip is usually connected to the tab of the battery to achieve effects such as charging protection, over-discharge protection, over-current protection, and over-temperature protection for the battery.

[0004] As the battery is continuously used, the battery core inside the battery will gradually age. To protect the safety of the electrical appliance, when the battery bulges or other situations occur, the battery body needs to be replaced. However, the existing battery body and battery chip are usually an integrated structure, which makes it necessary to replace the undamaged battery chip together when replacing the battery, greatly wasting the material utilization rate. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is that the battery chip and the battery body of the existing polymer lithium battery cannot be freely disassembled.

[0006] To solve the above technical problem, the technical solution provided by the utility model is: a polymer lithium battery, including a battery main body, the outer wall of the battery main body is provided with a puncture-proof polyethylene film, one side of the battery main body is provided with a tab connecting to an electrical appliance, a battery chip is arranged above the tab, the battery chip is connected to the tab through a tab connecting sleeve, the outer wall of the battery chip is provided with a detachable multi-structure protective shell for fixing the battery chip, and the detachable multi-structure protective shell internally includes a chip compartment for storing the battery chip and a wire storage box for storing connecting wires.

[0007] As an improvement, the detachable multi-structure protective shell is connected to the side wall of the battery main body through a snap structure.

[0008] As an improvement, the wire storage box is a single-open shell, and a sealing cover for sealing the wire storage box is arranged at the open end of the wire storage box.

[0009] As an improvement, the sealing cover is connected to the open end of the wire storage box through body contact, and the wire connecting the power output end of the battery chip passes through the inner wall of the chip partition layer.

[0010] As an improvement, the power output end of the battery chip is connected to the power output end of the ear connection sleeve by welding, and the ear is connected to the inner sliding groove of the ear connection sleeve through body contact.

[0011] As an improvement, the battery chip is connected to the bottom surface of the chip partition layer through a pin structure.

[0012] The advantages of the present utility model compared with the prior art are as follows: the connection mode between the ear and the battery chip of the present device is changed to a slidable connection that is convenient for disassembly through the ear connection sleeve, and the detachable multi-structural protective shell for fixing the battery chip is connected to the side wall of the battery body through a buckle structure, which enables the present device to be disassembled in sections while ensuring the stable connection of the battery chip, thereby saving materials for sustainable use. Description of the Drawings

[0013] Figure 1 is the overall structure diagram of a polymer lithium battery of the present utility model.

[0014] Figure 2 is the overall structure explosion diagram of a polymer lithium battery of the present utility model.

[0015] Figure 3 is the cross-sectional view of the detachable multi-structural protective shell of a polymer lithium battery of the present utility model.

[0016] Figure 4 is the structure diagram of the battery chip of a polymer lithium battery of the present utility model.

[0017] Figure 5 is the cross-sectional view of the battery body of a polymer lithium battery of the present utility model.

[0018] As shown in the figure: 1. Battery body; 11. Ear; 2. Polyethylene film; 3. Battery chip; 4. Ear connection sleeve; 5. Detachable multi-structural protective shell; 51. Chip partition layer; 52. Wire storage box; 53. Sealing cover. Detailed Description of the Preferred Embodiment

[0019] The following further describes the present utility model in detail with reference to the drawings.

[0020] As shown in the specification appendix Figure 1 、 2As shown in Figures 5, it includes a battery body 1. The outer wall of the battery body 1 is provided with a puncture-proof polyethylene film 2. One side of the battery body 1 is provided with a tab 11 for connecting an electrical appliance. Above the tab 11 is a battery chip 3. A layer of polyethylene film 2 is wrapped around the outer wall of the battery body 1. Due to the puncture resistance of the polyethylene film 2, when the battery is hit by a hard object, even if there are cracks in the shell of the battery body 1, the polyethylene film 2 can ensure that the battery cells inside the battery body 1 will not leak. Through the battery chip 3 connected to the tab 11, it is ensured that the battery body 1 will not be damaged due to reasons such as high temperature and excessive current.

[0021] As shown in the attached drawings of the specification Figure 2 、 3 、4, the battery chip 3 is connected to the tab 11 through a tab connection sleeve 4. The power output end of the battery chip 3 and the tab connection sleeve 4 are connected by welding. The tab 11 is connected to the internal chute of the tab connection sleeve 4 through body contact. Insert the tab 11 into the internal chute of the tab connection sleeve 4. Through their sliding connection, the connection method between the battery chip 3 and the tab 11 is changed to a detachable structure, which is convenient for the battery body 1 to be separately disassembled and replaced when its life expires or is damaged, and the intact battery chip 3 is retained, thus saving the replacement cost.

[0022] The outer wall of the battery chip 3 is provided with a detachable multi-structure protective shell 5 for fixing the battery chip 3. The inside of the detachable multi-structure protective shell 5 includes a chip compartment 51 for storing the battery chip 3 and a wire storage box 52 for storing connecting wires. The wire storage box 52 is a single-open shell. The open end of the wire storage box 52 is provided with a sealing cover 53 for sealing the wire storage box 52. The sealing cover 53 is connected to the open end of the wire storage box 52 through body contact. The wire connecting the power output end of the battery chip 3 passes through the inner wall of the chip compartment 51. Pass the wire through the inner wall hole of the chip compartment 51 and use a welding device to weld the wire to the power output end of the battery chip 3. Through the wires stored in the wire storage box 52, it is convenient for the battery body 1 to connect to electrical appliances more conveniently and avoid the situation of needing to externally connect wires when connecting electrical appliances.

[0023] The detachable multi-structure protective shell 5 is connected to the side wall of the battery body 1 through a snap structure. The battery chip 3 is connected to the bottom surface of the chip compartment 51 through a pin structure. The pin column on the bottom surface of the chip compartment 51 passes through the fixing hole of the battery chip 3 to fix their positions. Because the detachable multi-structure protective shell 5 is snapped into the card slot of the battery body 1, it is convenient to disassemble when replacing the battery body 1.

[0024] When the present utility model is specifically implemented, open the sealing cover 53, pull out the wire in the wire storage box 52, and connect it to an electrical appliance. When the battery body 1 is damaged, just unfasten the buckle structure of the detachable multi-structure protective shell 5, and the detachable multi-structure protective shell 5 can be separated from the battery body 1 (because the power output end of the ear connection sleeve 4 is welded to the battery chip 3, and the battery chip 3 is fixed to the bottom surface of the chip spacer 51 through the pin structure, so that when the detachable multi-structure protective shell 5 is opened, the ear connection sleeve 4 will be separated from the ear 11 at the same time). After that, replace the new battery body 1, and reinsert the ear 11 into the ear connection sleeve 4 to complete the replacement.

[0025] The above describes the present utility model and its implementation manners. Such description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present utility model, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and, without departing from the gist of the creation of the present utility model, design similar structural manners and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present utility model.

Claims

1. A polymer lithium battery, comprising a battery body (1), an anti-puncture polyethylene film (2) is provided on the outer wall of the battery body (1), a tab (11) for connecting an electrical appliance is provided on one side of the battery body (1), and a battery chip (3) is provided above the tab (11), characterized in that: The battery chip (3) is connected to the tab (11) through a tab connection sleeve (4). A detachable multi-structure protective shell (5) for fixing the battery chip (3) is provided on the outer wall of the battery chip (3). The interior of the detachable multi-structure protective shell (5) includes a chip compartment (51) for storing the battery chip (3) and a wire storage box (52) for storing connection wires.

2. The polymer lithium battery according to claim 1, characterized in that: The detachable multi-structure protective shell (5) is connected to the side wall of the battery body (1) through a snap structure.

3. A polymer lithium battery according to claim 2, characterized in that: The wire storage box (52) is a single-open shell, and a sealing cover (53) for sealing the wire storage box (52) is provided at the open end of the wire storage box (52).

4. A polymer lithium battery according to claim 3, characterized in that: The sealing cover (53) is connected to the open end of the wire storage box (52) through body contact, and the wire connecting the power output end of the battery chip (3) passes through the inner wall of the chip compartment (51).

5. A polymer lithium battery according to claim 1, characterized in that: The power output end of the battery chip (3) is connected to the power output end of the tab connection sleeve (4) by welding, and the tab (11) is connected to the inner sliding groove of the tab connection sleeve (4) through body contact.

6. A polymer lithium battery according to claim 1, characterized in that: The battery chip (3) is connected to the bottom surface of the chip compartment (51) through a pin structure.

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