A method and device for controlling the formation of lithium batteries

A technology for controlling lithium batteries and parameters, applied in the field of controlling the formation of lithium batteries, can solve the problems of general SEI film formation effect, low degree of automation, high energy consumption of formation equipment, etc., to achieve reasonable and intelligent formation process, improve automation, The effect of improving utilization efficiency

Active Publication Date: 2016-04-27
SHENZHEN KEXIN COMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1. Low degree of automation, unable to meet mass production;
[0007] 2. Lack of effective control of the conditions for the formation of the SEI film, resulting in a general effect of the formation of the SEI film of lithium batteries;
[0008] 3. Formation equipment consumes a lot of energy

Method used

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  • A method and device for controlling the formation of lithium batteries
  • A method and device for controlling the formation of lithium batteries
  • A method and device for controlling the formation of lithium batteries

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0036] see figure 1 , an embodiment 1 of a method for forming a lithium battery, comprising the following steps:

[0037] S101: importing or inputting control parameters;

[0038] When importing or inputting control parameters, it is judged whether the control parameters are within the preset parameter range, if yes, the control parameters are imported, otherwise, the control parameters corresponding to the existing formation models are imported;

[0039] The formation model uses a data table to represent the electrochemical parameters (voltage, current, temperature) during the formation process and the corresponding process control time. The expression is (U, I, T, t), U represents voltage, I Represents the current, T represents the battery temperature, and t represents the time. The expression process controls the battery formation by using the voltage value U, current value I, and temperature value T within the time t. The formation model is expressed as (U 0 , I 0 ,T ...

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Abstract

The invention discloses a method for controlling the formation of a lithium battery. The method includes: importing or inputting control parameters; controlling the formation equipment according to the control parameters; collecting environmental parameters, and judging that the environmental parameters exceed a predetermined parameter range; if so, Adjust control parameters and control the formation equipment. The invention can improve the automation of battery formation, make the formation process of lithium batteries more reasonable and intelligent, and form a better SEI film by controlling the formation environment; through the calculation of equipment energy consumption, the energy consumption of each battery formation is more efficient. Reasonable, improve the utilization efficiency of electric energy. The invention also discloses a device for controlling the formation of the lithium battery.

Description

technical field [0001] The invention relates to a lithium battery formation technology, in particular to a method and device for controlling the formation of a lithium battery. Background technique [0002] A lithium battery is mainly composed of a positive electrode, a negative electrode, an electrolyte, and an SEI film. Among them, the SEI film is the reaction between the electrode material and the electrolyte at the solid-liquid phase interface during the first charge and discharge process of the liquid lithium battery, forming a passivation layer covering the surface of the electrode material. The formation of the SEI film of a lithium battery is based on the consumption of lithium ions in the positive electrode of the battery and the efficiency of its electrochemical reaction, which is directly reflected in the consumption of lithium ions. The formation of the SEI film consumes a large amount of lithium ions, which means that the first charge and discharge increases th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/058
CPCH01M10/058H01M10/4242Y02E60/10Y02P70/50
Inventor 曾广忠
Owner SHENZHEN KEXIN COMM TECH
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