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Flexible package lithium ion battery with air guide device and method for preparing flexible package lithium ion battery

A lithium-ion battery and gas guide technology, which is applied in the manufacture of electrolyte batteries, secondary batteries, battery pack components, etc., can solve the problems of gas discharge, incomplete palliative treatment, poor strength, etc. performance, eliminating the phenomenon of air swelling and preventing the effect of air swelling

Active Publication Date: 2012-07-18
宜兴市欣驰能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existence of the air bag will make the corners easy to be damaged, and the corner damage can be reduced to a certain extent by setting the incision at the corner, but the damage at the corner is still difficult to avoid and the strength of the incision is not good after heat sealing. At the same time, The structure of the soft-packed lithium-ion battery is not compact enough, the volume of the battery increases, and the cost of aluminum-plastic packaging increases
In addition, because the air bag is still installed on the battery, when the battery generates gas during operation, the air bag serves as a buffer device to carry a part of the gas, which appropriately reduces the internal pressure of the battery, but cannot discharge the gas inside the battery in time. The battery includes gas The bag will still swell and is an incomplete palliative

Method used

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  • Flexible package lithium ion battery with air guide device and method for preparing flexible package lithium ion battery
  • Flexible package lithium ion battery with air guide device and method for preparing flexible package lithium ion battery
  • Flexible package lithium ion battery with air guide device and method for preparing flexible package lithium ion battery

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preparation example Construction

[0031] The preparation method of the soft-packaged lithium-ion battery with a gas-guiding device, the structure of the soft-packaged lithium-ion battery with a gas-guiding device can refer to figure 1 and figure 2 , including the following steps:

[0032] 1) Roughen the outer surface of the airway tube 21, polish both ends, remove burrs, and coat the outer surface of the airway tube 2 with ear glue to obtain the treated airway tube 21;

[0033] 2) After the plastic jacket 22 is heated to soften, put into the air guide tube 21 processed in step 1), after the plastic jacket 22 is cooled, shrink to obtain the air guide device 2, and then place it on the surface of the plastic jacket 22 in the air guide device 2 Coating ear glue;

[0034] 3) When the shell 4 of the soft-packaged lithium-ion battery is heat-sealed, install the gas guiding device 2 in step 2) on the heat-sealed edge 5 of the shell 4, heat-seal the heat-sealed edge 5, and after the battery is formed, place the Th...

Embodiment 1

[0037] A preparation method of a soft-packaged lithium-ion battery with a gas-guiding device, the structure of the soft-packaged lithium-ion battery with a gas-guiding device can refer to figure 1 and figure 2 , including the following steps:

[0038] 1) Choose 304 stainless steel pipe as the air guide tube 21, its inner diameter is 0.5mm, outer diameter is 0.8mm, length is 10mm, the outer surface of this 304 stainless steel pipe is roughened, both ends are polished, burr is removed, and in this The outer surface of the 304 stainless steel pipe is coated with ear glue, and the ear glue is selected from the special ear glue for lithium-ion batteries produced by Japan Toppan Printing Co., Ltd. to obtain the processed airway tube 21;

[0039] 2) Select a polyethylene plastic jacket with an inner diameter of 0.7 mm, an outer diameter of 1.5 mm, and a length of 20 mm as the plastic jacket 22, heat the plastic jacket 22 to 50° C. to soften, and put it into the airway treated in st...

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Abstract

The invention discloses a flexible package lithium ion battery with an air guide device. The flexible package lithium ion battery comprises a battery pole core, a shell for packaging the battery pole core, and electrolyte. The air guide device comprises an air guide tube which penetrates through the shell, and a plastic jacket which is wrapped outside the air guide tube, wherein one end of the plastic jacket is connected with the shell in a sealing mode, and the other end of the plastic jacket extends out of an end face of the air guide tube to form an extending part for hot sealing. Due to the adoption of the air guide device, air guide can be conveniently performed when a gas expansion phenomenon of the flexible package lithium ion battery appears, and gases can be discharged out of the battery during battery formation and use, so that the battery is ensured to work continuously; and simultaneously, with the adoption of the air guide device, the battery can be maintained by supplementing injection liquid, the service life of the battery is prolonged, and the performance of the battery is improved. The invention also discloses a method for preparing the flexible package lithium ion battery with the air guide device, and the method is simple in preparation and easy to implement.

Description

technical field [0001] The invention relates to the field of soft-packaged lithium-ion batteries and the preparation thereof, in particular to a soft-packaged lithium-ion battery with a gas guiding device and a preparation method thereof. Background technique [0002] Lithium-ion batteries have many outstanding advantages such as high specific energy density, high average output voltage, large output power, small self-discharge, no memory effect, high charge and discharge efficiency, long cycle life, wide operating temperature range, and green and pollution-free. Since it was successfully developed in the early 1990s, it has become the battery system with the best comprehensive performance at present. With the advancement of battery design and manufacturing technology and the continuous emergence of new materials, the application range of lithium-ion batteries has continued to expand, and has been widely used in various fields, especially in the field of new energy industrie...

Claims

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Application Information

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IPC IPC(8): H01M2/12H01M10/0525H01M10/058
CPCY02E60/122Y02E60/10Y02P70/50
Inventor 史雪锋刘伟利黄辉王秀丽史顺君陈鹏陈永祥许鹏
Owner 宜兴市欣驰能源科技有限公司