Battery charging method, device, equipment and storage medium

A battery charging and battery technology, applied in the fields of equipment, storage media, devices, and battery charging methods, can solve problems such as low charging efficiency and inability to fully utilize the charging capacity of rechargeable batteries, achieve optimal service life and charging safety, and reduce battery life. The risk of overcharging the core and the effect of improving charging efficiency

Active Publication Date: 2017-11-10
CONTEMPORARY AMPEREX TECH CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the charging method using constant current charging cannot give full play to the charging capacity of the rechargeable battery, the charging efficiency is low, and there are charging safety problems caused by the overcharging of the battery cells.

Method used

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  • Battery charging method, device, equipment and storage medium
  • Battery charging method, device, equipment and storage medium
  • Battery charging method, device, equipment and storage medium

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0086] Set three charging stages, and set a group of charging current values ​​{43A, 22A, 12A} corresponding to the above three charging stages that decrease in order, and place the battery in a charging environment temperature of -10°C. The charging environment temperature determines the internal resistance value of the battery and charges the battery.

[0087] Charge with a current of 43A. During the charging process, the charging cut-off potential of the current charging stage is calculated according to the current charging current and the internal resistance of the battery to be 4.1V. The charging voltage of the battery is monitored. When the monitored charging voltage of the battery reaches 4.1V, the current is The rate of 10A per second is reduced from 43A to 22A.

[0088] Charge with a current of 22A. During the charging process, the charging cut-off potential of the current charging stage is calculated according to the current charging current and the internal resistan...

specific Embodiment 2

[0090] Set three charging stages, and set a group of charging current values ​​{65A, 22A, 12A} corresponding to the above three charging stages that decrease in order, and place the battery in a charging environment temperature of -10°C. The charging environment temperature determines the internal resistance value of the battery and charges the battery.

[0091] Charge with a current of 65A. During the charging process, according to the current charging current and the internal resistance of the battery, the charging cut-off potential of the current charging stage is calculated to be 3.8V. The charging voltage of the battery is monitored. When the monitored charging voltage of the battery reaches 3.8V, the current is The rate of 10A per second is reduced from 65A to 22A.

[0092] Charge with a current of 22A. During the charging process, the charging cut-off potential of the current charging stage is calculated according to the current charging current and the internal resista...

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Abstract

The invention discloses a battery charging method, device and equipment and a storage medium. The battery charging method comprises the following steps: setting the charging current value In in the n-th charging stage of the battery charging process, wherein In is smaller than In-1; according to the charging environment temperature of a battery, using the relationship between the internal resistance of the battery and the charging environment temperature of the battery to determine the internal resistance value of the battery; based on In and the internal resistance value of the battery, calculating a charging cut-off voltage value Vn, corresponding to In, in the n-the charging stage; in the (n-1)-th charging stage, charging the battery by using In-1, and when the battery charging voltage reaches Vn-1, if n-1 is smaller than a charging stage sum, entering the n-th charging stage; in the (n-1)-th charging stage, charging the battery by using In-1, and when the battery charging voltage reaches Vn-1, if n-1 is equal to the charging stage sum, stopping charging. According to the battery charging method provided by the embodiment of the invention, the charging efficiency of the battery can be improved, and the risk of battery cell overcharging is reduced.

Description

technical field [0001] The invention belongs to the field of battery technology, and in particular relates to a battery charging method, device, equipment and storage medium. Background technique [0002] Nowadays, with the gradual consumption of non-renewable energy sources such as petroleum and the urgent need for environmental protection, new energy vehicles using rechargeable batteries as power sources have been widely promoted around the world. For example, new energy vehicles powered by lithium-ion batteries have developed rapidly in recent years; and an important criterion for measuring the performance of new energy vehicles is the charging time of rechargeable batteries. A shorter charging time can greatly improve new energy vehicles. The experience of using energy vehicles. [0003] Most existing technologies for charging rechargeable batteries, for example, in the battery charging technology of charging piles, the charging method of constant current charging is us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H01M10/44
CPCH01M10/44H01M10/446H02J7/007Y02E60/10
Inventor 杜鑫鑫骆福平王升威付欣
Owner CONTEMPORARY AMPEREX TECH CO
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