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Battery charging method, device, device and storage medium

A battery charging and battery technology, applied in battery circuit devices, circuit devices, current collectors, etc., can solve the problems of low battery charging efficiency and too much charging.

Active Publication Date: 2020-07-03
CONTEMPORARY AMPEREX TECH CO
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the charging method using constant current charging has low battery charging efficiency when charging rechargeable batteries, and often "not fully charged" and "too much charged" situations

Method used

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

Examples

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specific Embodiment

[0121] Set three charging stages, and set a set of successively decreasing charging current values ​​{43A, 22A, 12A} corresponding to the above three charging stages, and a charging cut-off voltage corresponding to the charging current of each charging stage { 4.1V, 4.2V, 4.3V}, put the battery in the charging environment temperature of -10℃, and charge the battery.

[0122] During the process of charging the battery with a current of 43A, the temperature of the battery at a specified time is collected to determine the SOC of the battery at the specified time.

[0123] Determine the battery charging loss coefficient according to the battery temperature, and determine the internal resistance value of the battery according to the battery temperature and the SOC at the specified time, and use the above formula (6) to calculate the charging cut-off voltage corresponding to the charging current of 43A at the specified time 4.1V.

[0124] When collecting the battery charging voltage V...

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Abstract

The invention discloses a battery charging method, apparatus and equipment and a storage medium. The charging method comprises the steps of setting a charging current value I<n> in the n charging stage in the battery charging process; in the (n-1) charging stage, determining a battery internal resistance value according to a battery temperature and state of charge at an appointed moment charged at I<n-1>; determining a battery charging loss coefficient according to the battery temperature at the appointed moment; correcting a charging cut-off voltage value V<n-1> corresponding to the I<n-1> according to the battery internal resistance value and the battery charging loss coefficient at the appointed moment; in the (n-1) charging stage, if the battery charging voltage is greater than or equal to V<n-1> and n-1 is less than the set charging stage total number, entering the n charging stage; and if the battery charging voltage is greater than or equal to V<n-1> and n-1 is equal to the charging stage total number, stopping charging. By virtue of the battery charging method provided by the embodiments, the charging efficiency can be improved, and risks of over-charging or over-discharging can be avoided.

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] In recent years, new energy vehicles have made great progress in the world due to their high energy conversion rate, comfortable driving experience and zero emission of greenhouse gases. An important criterion for measuring the performance of new energy vehicles is rechargeable batteries. Shorter charging time can greatly improve the experience of new energy vehicles. How to improve the charging speed of new energy vehicles while ensuring the charging safety and performance of rechargeable batteries has become a research field in recent years. focus. [0003] The charging technology of new energy vehicles that has been put into use generally uses charging piles to quickly charge new energy vehicles, while most of the existing related technologies that use charging piles to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00
CPCH02J7/0086H02J7/0091Y02E60/10
Inventor 杜鑫鑫骆福平王升威付欣
Owner CONTEMPORARY AMPEREX TECH CO
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