New energy lithium battery expansion repair method
A repair method and lithium battery technology, applied in the direction of lithium battery, secondary battery gas removal, secondary battery repair/maintenance, etc., can solve problems such as internal structure damage, safety risks, battery function scrapping, etc., to achieve perfect use The effects of service, efficient utilization, and energy-saving utilization
Active Publication Date: 2020-01-10
安徽巡鹰再生资源利用有限公司
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Problems solved by technology
[0004] A new energy lithium battery flatulence repair method proposed by the present invention can solve the technical problems that the internal structure of the battery is damaged after the flatulence causes the battery function to be scrapped and there are safety risks
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[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments.
[0031] Such as figure 1 As shown, the new energy lithium battery flatulence repair method described in this embodiment includes the following workflow:
[0032] S100, remove the sealant of the liquid injection port of the flatulence lithium battery, and expose the small steel ball of the liquid injection port;
[0033] S200, removing the small steel ball at the liquid injection port of the flatulence lithium battery;
[0034] S300. Inject an inert gas into the liquid injection port of the flatulent lithium battery;
[0035] S400, using cylinder c...
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The invention relates to a new energy lithium battery expansion repair method, which can solve the technical problems of battery function scrap and safety risk caused by internal structure damage after battery expansion. The method comprises the steps of S100, removing a sealant at a liquid injection port of the expanded lithium battery to expose a small steel ball at the liquid injection port; S200, removing the small steel ball at the liquid injection port of the expanded lithium battery; S300, injecting an inert gas into the liquid injection port of the expanded lithium battery; S400, exhausting the expanded lithium battery under the control of an air cylinder; and S500, sealing the liquid injection port of the lithium battery. According to the new energy lithium battery gas expansion repairing method, the gas generated in the lithium battery can be recovered, so that the expanded lithium battery can be continuously used, more perfect use service is brought to post-market cascade utilization of the lithium battery, and more energy-saving efficient utilization is brought.
Description
technical field [0001] The invention relates to the technical field of new energy lithium batteries, in particular to a method for repairing flatulence of new energy lithium batteries. Background technique [0002] It is common for lithium batteries to generate gas during the generation process. After the lithium battery is assembled, a small amount of gas will be generated during the preformation process. These gases are inevitable and are also the source of the so-called irreversible capacity loss of the battery cell. During the first charge and discharge process, after the electrons reach the negative electrode from the external circuit, they will undergo redox reactions with the electrolyte on the surface of the negative electrode to generate gas. During this process, SEI is formed on the surface of the graphite negative electrode. As the thickness of the SEI increases, the electrons cannot penetrate and inhibit the continuous oxidation and decomposition of the electroly...
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IPC IPC(8): H01M10/52H01M10/052
CPCH01M10/052H01M10/52Y02E60/10
Inventor 褚兵
Owner 安徽巡鹰再生资源利用有限公司