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Method of repairing soft package swollen battery cell

A repair method and inflation technology, which are applied in the repair/maintenance of secondary batteries, circuits, electrical components, etc., can solve problems such as affecting battery performance, batteries can no longer be used, and cannot eliminate gas, etc., to achieve performance recovery, energy saving, Avoid scrapping effects

Inactive Publication Date: 2020-02-11
SHUANGDENG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] CN 204793061U discloses a soft-packed lithium-ion battery with an exhaust valve. This utility model realizes exhaust by pushing the exhaust valve at the bottom of the cell when the gas produced by the battery reaches a certain pressure. There is a hidden danger that outside air enters and affects battery performance; CN204991879U discloses a soft-packed lithium-ion battery with a flattening protection structure. The reason is that the gas cannot be eliminated, and the battery cannot be used once the protective plate is activated

Method used

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  • Method of repairing soft package swollen battery cell
  • Method of repairing soft package swollen battery cell
  • Method of repairing soft package swollen battery cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Embodiment 1 provides a repair method for a soft-pack air-expandable cell 1, comprising the following steps:

[0037] a. Place the soft-pack air-expandable cell 1 on a flat surface, and use a sharp object to pierce a small hole along the edge of the aluminum-plastic film at the junction of the top-seal and side-seal of the soft-pack air-expandable cell 1, and discharge the inside gas;

[0038] b. Insert the PP hose 2 into the small hole, seal along the edge of the small hole, fuse the PP layer inside the aluminum-plastic film with the PP hose 2, and draw out the copper wire 3;

[0039] c. Connect the PP hose 2 to the liquid supply device for rehydration, clamp the PP hose 2 with a clamping device, and put on the rubber cap 4;

[0040] d. After the soft-pack air-expandable cell 1 is left at room temperature, connect the PP hose 2 to a vacuum pump, vacuumize the interior of the soft-pack air-expandable cell 1, and clamp it with the clamping device After the PP hose 2, p...

Embodiment 2

[0058] Embodiment 2 provides a repair method for the soft-pack air-expandable cell 1, comprising the following steps:

[0059] a. Place the soft-pack air-expandable cell 1 on a flat surface, and use a sharp object to pierce a small hole along the edge of the aluminum-plastic film at the junction of the top-seal and side-seal of the soft-pack air-expandable cell 1, and discharge the inside gas;

[0060] b. Insert the PP hose 2 into the small hole, seal along the edge of the small hole, fuse the PP layer inside the aluminum-plastic film with the PP hose 2, and draw out the copper wire 3;

[0061] c. Connect the PP hose 2 to the liquid supply device for rehydration, clamp the PP hose 2 with a clamping device, and put on the rubber cap 4;

[0062] d. After the soft-pack air-expandable cell 1 is left standing at room temperature, connect the PP hose 2 to a vacuum pump, vacuumize the interior of the soft-pack air-expandable cell 1, and clamp it with the clamping device After the P...

Embodiment 3

[0082] Embodiment 3 provides a repair method for the soft-pack air-inflatable cell 1, comprising the following steps:

[0083] a. Place the soft-pack air-expandable cell 1 on a flat surface, and use a sharp object to pierce a small hole along the edge of the aluminum-plastic film at the junction of the top-seal and side-seal of the soft-pack air-expandable cell 1, and discharge the inside gas;

[0084] b. Insert the PP hose 2 into the small hole, seal along the edge of the small hole, fuse the PP layer inside the aluminum-plastic film with the PP hose 2, and draw out the copper wire 3;

[0085] c. Connect the PP hose 2 to the liquid supply device for rehydration, clamp the PP hose 2 with a clamping device, and put on the rubber cap 4;

[0086] d. After the soft-pack air-expandable cell 1 is left standing at room temperature, connect the PP hose 2 to a vacuum pump, vacuumize the interior of the soft-pack air-expandable cell 1, and clamp it with the clamping device After the P...

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Abstract

The invention relates to the technical field of lithium ion batteries, and discloses a method of repairing a soft package swollen battery cell (1), which is used for repairing a soft package lithium ion battery by adopting a method process flow of pricking holes and exhausting air, supplementing electrolyte, standing at normal pressure, forming and sealing, and matching with special tools of a PPhose (2), a copper wire (3), a rubber cap (4) and a vacuum pump. The swollen problem of a formed battery is effectively solved, the soft package lithium ion battery is repaired, the performance is recovered, scrapping is avoided, energy is saved, and therefore, echelon utilization is achieved.

Description

technical field [0001] The invention relates to the technical field of lithium-ion batteries, in particular to a method for repairing a soft-packed inflatable battery cell. Background technique [0002] At present, lithium-ion batteries are mainly divided into four types: cylindrical, square, button, and thin film. Among them, the pouch battery in the square lithium-ion battery will form flatulence under the influence of the manufacturing process or the use environment, and there is a certain risk in continuing to use it. Scrapping it is a waste of energy and will cause adverse effects on the environment. [0003] At the same time, in recent years, the China Tower Company has vigorously promoted the cascade utilization of power batteries, and used the batteries that have retreated from the power market for the communication market. There will inevitably be inflated batteries. If they can be repaired, energy can be saved, thereby achieving a greater degree. The upper echelon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/42H01M10/52H01M10/058H01M2/36
CPCH01M10/42H01M10/52H01M10/058H01M50/60Y02E60/10Y02P70/50
Inventor 韩云峰李华伟卢珊珊
Owner SHUANGDENG GRP
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