Negative pressure control method and system for lithium-ion battery formation
A lithium-ion battery and negative pressure control technology, which is applied in the manufacture of electrolyte batteries, secondary batteries, electrochemical generators, etc., can solve problems such as difficult adjustment, unstable vacuum breaking, and unstable control, achieving stable control and solving problems Effects of Control Instability, Barometric Change and Control Stabilization
Active Publication Date: 2022-03-25
GUANGZHOU QINGTIAN INDAL +1
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[0004] In order to overcome the technical defects of unstable control, difficult adjustment and unstable vacuum breaking in the above-mentioned existing negative pressure control system, the present invention provides a negative pressure formed by lithium-ion batteries that is stable in control, easy to adjust, and stable in vacuum breaking. Control method and system
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[0022] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.
[0023] Such as Figure 1 ~ Figure 2 As shown, a negative pressure control system formed by a lithium ion battery according to the present invention includes a first electrical proportional valve 1, a negative pressure reducing valve 2, a second electrical proportional valve 3, an industrial computer 4, a switching unit 5, The electronic pressure gauge 6 and the needle bed negative pressure circuit 7, the first electric proportional valve 1, the negative pressure reducing valve 2 and the second electric proportional valve 3 are arranged at intervals, the first electric proportional valve 1, the negative pressure reducing valve The pressure valve 2 and the second elec...
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The invention relates to the technical field of lithium ion battery formation, in particular to a negative pressure control method and system for lithium ion battery formation. The method comprises: the industrial computer controls the negative pressure reducing valve to vacuumize the negative pressure circuit of the needle bed; adjusts the vacuum degree of the negative pressure circuit of the needle bed; stops the operation and breaks the vacuum of the negative pressure circuit of the needle bed; High positive pressure purges the needle bed negative pressure circuit. The negative pressure control method and system have the advantages of stable control, easy adjustment, and stable vacuum breaking. When vacuuming, the negative pressure is generated by the first electric proportional valve and the negative pressure reducing valve, and the electronic pressure gauge is used for feedback, so that The air pressure change and control are relatively stable. During the operation, the air pressure can be adjusted through the negative pressure reducing valve and the second electric proportional valve, which solves the problems of unstable control, difficult adjustment and problems in the existing negative pressure control system. The problem of unstable vacuum breaking meets the needs of battery production.
Description
technical field [0001] The invention relates to the technical field of lithium ion battery formation, in particular to a negative pressure control method and system for lithium ion battery formation. Background technique [0002] In the production process of lithium-ion batteries, certain formation processes need to control the battery to charge and discharge within a vacuum range of a certain negative pressure value. [0003] The existing negative pressure control system can only achieve step-wise vacuuming when vacuuming, resulting in unstable vacuum in the circuit, more drastic changes, and easy damage to the components in the negative pressure control system; on the other hand, the current The vacuuming work of some negative pressure control systems is difficult to adjust. When the predetermined high vacuum degree is reached, it cannot be actively adjusted to a smaller vacuum degree, and the degree of freedom in use is low; in addition, after the negative pressure contro...
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IPC IPC(8): H01M10/44H01M10/0525H01M10/058
CPCH01M10/0525H01M10/058H01M10/446Y02P70/50Y02E60/10
Inventor 孙君光解建伟黄云辉曹成军黄志豪张兴旺秦茂
Owner GUANGZHOU QINGTIAN INDAL