Method for calculating liquid injecting amount of lithium ion battery

A technology of lithium ion battery and calculation method, applied in the field of electrochemical battery manufacturing, can solve problems such as inability to accurately calculate the optimal liquid injection amount, and achieve the effects of strong practicability, high accuracy and reduced production cost

Inactive Publication Date: 2019-04-26
JIANGSU FRONT NEW ENERGY +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention mainly aims at the problem that the prior art cannot accurately calculate the optimal liquid injection volume, and proposes a method for ca

Method used

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  • Method for calculating liquid injecting amount of lithium ion battery
  • Method for calculating liquid injecting amount of lithium ion battery
  • Method for calculating liquid injecting amount of lithium ion battery

Examples

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Example Embodiment

[0024] The following examples further illustrate the present invention.

[0025] Now take 1FP11190316-57 type lithium ion battery as an example to further illustrate the present invention. The specific steps are as follows:

[0026] a. Inject a conventional amount of m into the assembled embodiment lithium-ion battery 1 Electrolyte, the capacity of the example in this case is 57 ampere hours, and the conventional amount of electrolyte is injected m 1 Add 5g per ampere hour, it is 285g;

[0027] b. Collect the free electrolyte of the lithium ion battery after the acid injection and before the packaging, and the collection amount is m 2 ,The collected amount of this embodiment m 2 Is 5g;

[0028] c. Calculate the corrected injection volume m 3 =m 1 -m 2 ;

[0029] =285-5

[0030] =280(g)

[0031] d. Measuring the liquid absorption m of the built-in positive electrode sheet, negative electrode sheet and diaphragm of the lithium ion battery in the embodiment 4 , The specific measurement requi...

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Abstract

The invention discloses a method for calculating the liquid injecting amount of a lithium ion battery. The method is carried out according to the following steps: a, injecting a conventional amount m1of electrolyte into an assembled lithium ion battery; b, after acid injection, collecting free electrolyte of the lithium ion battery before packaging, wherein the collection amount is m2; c, calculating the corrected liquid injection amount m3=m1-m2; d, measuring the liquid absorption amount m4 of each of a positive plate, a negative plate and a membrane arranged in the lithium ion battery; e, obtaining the optimal liquid injection amount. The calculation method is simple, makes calculation results accurate and is beneficial to defining of the optimal liquid injection amount, so that the waste of the electrolyte is decreased, the environmental pollution is also reduced, and the manufacturing cost is saved.

Description

technical field [0001] The invention belongs to the technical field of electrochemical battery manufacturing. Specifically, the invention relates to a method for calculating the liquid injection volume of a battery, in particular to a calculation method for the liquid injection volume of a lithium ion battery. Background technique [0002] With the advancement of science and technology, and the improvement of the public's material and cultural living standards, people's demand for green energy lithium-ion batteries that are small in size, light in weight, high in energy, safe, reliable, and pollution-free, and can be recharged and used is increasing. Big. Of course, people's requirements for battery performance are getting higher and higher, so it is very important to accurately inject electrolyte into high-capacity batteries with high specific energy. [0003] Electrolyte, as the medium for lithium ion transmission in lithium-ion batteries, is a bridge connecting the posit...

Claims

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Application Information

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IPC IPC(8): G01G17/04
CPCG01G17/04
Inventor 夏亚会袁春刚佘沛亮孙全
Owner JIANGSU FRONT NEW ENERGY
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