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Battery injection and formation control device

A control device and battery technology, applied in secondary battery manufacturing, battery pack components, circuits, etc., can solve problems such as difficulty in sealing and difficult control of battery pressure.

Active Publication Date: 2011-08-31
GUANGZHOU LITHIUM FORCE ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the shortcomings and shortcomings of the prior art that the internal pressure of the battery is difficult to control and difficult to seal when injecting liquid, and to provide a new type of battery liquid injection and chemical formation control device

Method used

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  • Battery injection and formation control device
  • Battery injection and formation control device

Examples

Experimental program
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Effect test

Embodiment 1

[0028] A battery liquid injection and formation control device consists of an inner piston 101, an outer piston 102, a liquid injection hole 103 on the cover plate of the battery case, a plastic bracket 104 in the battery case, and a piston capable of controlling the gas discharge pressure. The device 105 is composed. The inner piston 101 is placed in the plastic bracket 104, and the inner piston 101 is provided with a screw hole matched with the outer piston 102. The screw hole and the liquid injection hole 103 are aligned with each other, and the outer piston 102 passes through the liquid injection hole 103 and the inner piston 101. The threaded connection closes the injection hole.

[0029] The piston packaging device 105 is composed of a support frame 111 , a screwdriver 107 with thread, a spring 108 , a washer 110 and a nut 109 . Screwdriver 107 passes support frame 111, and its handle 112 is above support frame 111, and screwdriver 107 is covered with spring 108 in the ...

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Abstract

The invention discloses a battery injection and formation control device which comprises an internal piston, an external piston, an injection hole arranged in a battery shell cover plate, a plastic bracket in a battery shell and a piston packaging device capable of controlling gas emission pressure, wherein the internal piston is detachably fixed in the plastic bracket and internally provided with a threaded hole matched with the external piston, the threaded hole is mutually aligned with the injection hole, and the external piston is connected with a thread in the threaded hole of the internal piston for closing the injection hole after penetrating through the injection hole. Positive pressure in a battery acts on the internal piston to press a sealing surface of the internal piston, thus airtightness of the injection hole is ensured. Through controlling the gas emission pressure during battery formation, gas pressure in the battery can be reduced, and battery expansion is lightened;and electrochemical properties of active materials and electrolyte of the battery are changed, safety and property of the battery are improved, thus the invention is suitable for all batteries with large specific energy and high reliability.

Description

technical field [0001] The invention belongs to the field of battery design, and in particular relates to a battery liquid injection and formation control device. Background technique [0002] As a device for storing electrical energy, batteries have been widely used in various occasions, from mobile phones, laptop computers, power tools to electric vehicles, submarines, and power stations. Charge the secondary battery. In recent years, in order to reduce air pollution and dependence on oil, countries all over the world have invested heavily in the research and development of electric vehicles, and one of the main directions is to develop large-capacity power batteries. Higher requirements are also put forward for large-capacity batteries, including higher specific energy and specific power, higher energy density and power density, higher safety and reliability, lower internal resistance, better heat dissipation characteristics, etc. Among them, the lithium-ion secondary ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/36H01M10/04
CPCY02E60/12Y02E60/10Y02P70/50
Inventor 梁伟雄钟平财尹敏李昶怡李健
Owner GUANGZHOU LITHIUM FORCE ENERGY TECH
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