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Battery charging method, device and device

A battery charging and battery technology, applied in battery circuit devices, secondary battery charging/discharging, circuit devices, etc., can solve problems such as low charging efficiency and insufficient battery capacity, achieve optimal service life and charging safety, and avoid overcharging Risk, the effect of improving charging speed and charging efficiency

Active Publication Date: 2020-06-23
CONTEMPORARY AMPEREX TECH CO
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of charging method will lead to insufficient battery capacity and low charging efficiency

Method used

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  • Battery charging method, device and device
  • Battery charging method, device and device
  • Battery charging method, device and device

Examples

Experimental program
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specific Embodiment

[0105] Set three charging stages, and set a group of charging current values ​​{172A, 129A, 43A} corresponding to the above three charging stages that decrease in turn, place the battery in a charging environment temperature of 25°C, and charge the battery .

[0106] During the process of charging the battery with a current of 172A, the capacity and voltage data of the charging process are collected at a specified moment.

[0107] Calculate the SOC of the battery at the specified time, obtain the functional relationship between the DCR and SOC of the battery, and obtain the DCR of the battery at the specified time SOC Value, and use the formula to calculate the charging cut-off voltage V when the charging current at the specified time is 172A 1 .

[0108] will capture the battery charging voltage V t and charge cut-off voltage V 1 For comparison, if V t 1 , continue to charge the battery with a current of 172A, and keep charging the cut-off voltage V corresponding to the ...

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Abstract

The invention discloses a charging method, device and equipment for a battery. The charging method comprises the following steps: setting the charging current value In of the nth charging stage in the battery charging process; in the (n-1)th charging stage, charging the battery by using current In-1, and based on In-1 and the state of charge SOC of the battery at an appointed moment, determining the charging cut-off voltage value Vn-1 corresponding to In-1 at the appointed moment; when the charging voltage of the battery at present is smaller than the charging cut-off voltage value corresponding to In-1 at the appointed moment, continuously charging the battery by using current In-1; in the (n-1)th charging stage, when the charging voltage of the battery at present reaches the charging cut-off voltage value corresponding to In-1 at the appointed moment and n-1 is smaller than a set charging stage sum, entering the nth charging stage, and when the charging voltage of the battery at present reaches the charging cut-off voltage value corresponding to In-1 at the appointed moment and n-1 is equal to the charging stage sum, stopping charging. According to the charging method for the battery provided by the embodiment of the invention, the charging quantity and charging efficiency can be improved.

Description

technical field [0001] The invention belongs to the field of battery technology, and in particular relates to a battery charging method, device and equipment. Background technique [0002] With the gradual consumption of non-renewable energy such as petroleum, an energy crisis may break out in the foreseeable future. For this reason, electric energy such as lithium-ion power batteries have become popular in the new energy market in recent years, and users have high expectations for battery performance, especially The requirements for fast charging performance of batteries are also getting higher and higher. [0003] Most of the existing charging technologies, such as the battery charging technology of the charging pile, do not have the step of constant voltage charging, but adopt the charging method of constant current charging. [0004] When the power battery is charged at a high rate, a current of several hundred amps often passes through. Most existing charging piles can...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/44H02J7/00
CPCH01M10/44H01M10/441H02J7/0077Y02E60/10
Inventor 骆福平王升威杜鑫鑫付欣
Owner CONTEMPORARY AMPEREX TECH CO
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