A method for verifying the internal space of a lithium battery
A technology of internal space and verification method, applied in the direction of secondary battery, secondary battery repair/maintenance, volume measuring instrument/method, etc., can solve the problem of inconsistency in the calculation of the remaining battery space, and achieve the effect of good effect and high efficiency
Active Publication Date: 2021-05-14
HEFEI GUOXUAN HIGH TECH POWER ENERGY
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Problems solved by technology
[0004] A verification device and verification method for the internal space of a lithium battery proposed by the present invention can solve the problem that the actual internal remaining space of the unfilled battery does not match the theoretical calculation due to a certain error between the actual volume of various solid materials in the lithium battery and the theoretical calculation. technical problem
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[0029] 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.
[0030] Such as figure 1 As shown, the lithium battery internal space verification device described in this embodiment includes an electrolyte container 9, which is arranged above the battery 10 to be tested, and the liquid outlet of the electrolyte container 9 and the liquid injection port of the battery 10 connected, the electrolyte container 9 and the battery 10 are arranged in the sealed cavity; the electrolyte container 9 is fixed in the sealed cover 2 by setting the bracket 8 .
[0031] Also includes a vacuum valve 7, the vacuum valve 7 is arr...
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The device and method for verifying the internal space of a lithium battery of the present invention can solve the technical problem that the actual internal remaining space of a non-liquid-injected battery does not match the theoretical calculation due to the error between the actual volume of the solid material in the lithium battery and the theoretical calculation. Including the electrolyte container, the electrolyte container is set above the battery to be tested, the electrolyte container and the battery are set in the sealed cavity; it also includes a vacuum valve, the vacuum valve is set outside the sealed cavity, the vacuum valve and the sealed cavity It also includes a pressurized valve, which is arranged outside the sealed cavity, and the pressurized valve is connected with the sealed cavity; it also includes a vacuum gauge, which is arranged outside the sealed cavity, and the vacuum gauge is connected to the sealed cavity. connected. In the present invention, negative pressure and positive pressure are alternately carried out, and the internal air of the unfilled battery is replaced with the lithium battery electrolyte, so that the remaining space inside the unfilled battery is completely filled with electrolyte, and then the remaining space inside the unfilled lithium battery is measured, and the efficiency High, good effect.
Description
technical field [0001] The invention relates to the technical field of lithium battery processing technology, in particular to a method for verifying the internal space of a lithium battery. Background technique [0002] Lithium-ion battery is a new type of high-energy battery successfully developed in the 20th century. It has the advantages of high working voltage, large specific energy, no pollution, no memory effect, long life, etc., and is widely used in modern digital products such as mobile phones and notebooks. In particular, in the past ten years, lithium secondary batteries have developed rapidly in the field of electric vehicles such as passenger cars and buses. [0003] In the design and development and process verification stage of lithium-ion batteries, an important design and verification is the calculation and verification of the internal space of the finished lithium battery. The proportion of the volume occupied by the finished lithium battery. After theor...
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IPC IPC(8): H01M10/42H01M10/48G01F22/00
CPCG01F22/00H01M10/42H01M10/484Y02E60/10
Inventor 吴自星田坤姚丹
Owner HEFEI GUOXUAN HIGH TECH POWER ENERGY