US 10,594,154 B2Granted

Battery charging method

AssigneeNio Co., Ltd.

InventorsShengjie Yuan, Fei Shen, Xiaojia Deng, Yong Yang, Jia Xu

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Abstract

The present application relates to a battery charging method. The method comprises the steps of: in accordance to the current's adverse effect on battery lifespan, classifying the charging current of a battery into a first type of charging current and a second type of charging current; setting a proportion limit on the first type of charging current and a proportion limit on the second type of charging current; obtaining the historical charging current information of the battery; determining the historical accumulative proportion of the second type of charging current in accordance to the historical charging current information; in accordance to the proportion limits and the historical accumulative proportion, determining the type of battery charging current which is present available. By taking into account different charging currents' adverse effect on battery lifespan, the charging method solves the problem of excessive charging current's adverse effect on battery lifespan.

Claims19

Dependent claims

A battery charging method comprising:

according to a current's adverse effect on battery lifespan, classifying the charging current of a battery into a first type of charging current and a second type of charging current;
setting a proportion limit on the first type of charging current and a proportion limit on the second type of charging current;
before the battery is charged, obtaining a historical charging current information of the battery;
determining a historical accumulative proportion of the second type of charging current in accordance with the historical charging current information;
in accordance with the proportion limits and the historical accumulative proportion, determining the battery charging current which is presently available;
wherein the proportion limit refers to a proportion of the maximum of charging time of the battery by its respective current divided by the overall number of battery charging time during its lifespan, or a proportion of the maximum of battery charging duration of its respective current divided by the overall battery charging duration during its lifespan.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/975,880Filed 10 May 2018
Priority: CN 2017 1 032503210 May 2017
Published: US 2018/0331554 A115 Nov 2018
Granted: 17 Mar 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

H01M 10/44
Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells: methods for charging or discharging
H02J 7/62
Including safety or protection arrangements: against overcurrent
H02J 7/94
Regulation of charging or discharging current or voltage: in response to battery current
H02J 7/953
In response to battery current: in response to charge current gradient