Charging method, charging device, and computer-readable medium for charging a battery
AssigneeNingde Amperex Technology Limited
InventorsQi Dang, Chao Gao, Qiang Zheng, Zhanzhao Fang
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Abstract
A charging method is proposed to include the steps of: in a first stage of charging, charging a battery with a first-stage current until a voltage of the battery reaches a first-stage voltage value; and in a second stage of charging, charging the battery with a second-stage current until the voltage of the battery reaches a second-stage voltage value which is greater than the first-stage voltage value. The second-stage current is smaller than the first-stage current.
Claims17
A charging method, comprising:
- in a first stage of charging, charging a battery with a first-stage current until a voltage of the battery reaches a first-stage voltage value;
- and
- in a second stage of charging, charging the battery with a second-stage current until the voltage of the battery reaches a second-stage voltage value;
- wherein the second-stage voltage value is greater than the first-stage voltage value, and the second-stage current is smaller than the first-stage current;
- wherein the first-stage voltage value is equal to a charging limit voltage value for the battery, and the second-stage voltage value is smaller than an oxidative decomposition voltage of an electrolyte of the battery.
A computer-readable medium, storing one or more programs, the one or more programs including a plurality of instructions, wherein when the plurality of instructions are executed by a computerized terminal with one or more processors, the plurality of instructions cause the computerized terminal to perform a charging method, comprising:
- in a first stage of charging, charging a battery with a first-stage current until a voltage of the battery reaches a first-stage voltage value;
- and
- in a second stage of charging, charging the battery with a second-stage current until the voltage of the battery reaches a second-stage voltage value;
- wherein the second-stage voltage value is greater than the first-stage voltage value, and the second-stage current is smaller than the first-stage current;
- wherein the first-stage voltage value is equal to a charging limit voltage value for the battery, and the second-stage voltage value is smaller than an oxidative decomposition voltage of an electrolyte of the battery.
A charging device adapted for charging a battery, comprising:
- a charging-discharging module adapted to be electrically connected to the battery for charging or discharging the battery;
- and
- a control unit electrically connected to said charging-discharging module, and configured to operate in one of a first stage and a second stage of charging, wherein the control unit controls the charging-discharging module to charge the battery;
- wherein:
- when the control unit operates in the first stage of charging, the control unit controls the charging-discharging module to charge the battery with a first-stage current until a voltage of the battery reaches a first-stage voltage value;
- when the control unit operates in the second stage of charging, the control unit controls the charging-discharging module to charge the battery with a second-stage current until the voltage of the battery reaches a second-stage voltage value which is greater than the first-stage voltage value;
- and
- the second-stage current is smaller than the first-stage current;
- wherein the first-stage voltage value is equal to a charging limit voltage value for the battery, and the second-stage voltage value is smaller than an oxidative decomposition voltage of an electrolyte of the battery.
Dependencies are inferred from the claim text.