Charging method, electronic device and storage medium

A charging method and technology of electronic devices, applied in battery circuit devices, circuit devices, secondary battery charging/discharging, etc., can solve the risk of lithium analysis, slow charging speed, failure to effectively use the current window in the constant current stage, etc. problem, achieve the effect of shortening the charging time, reducing the charging time, and shortening the cathode high potential time

Pending Publication Date: 2021-08-27
NINGDE AMPEREX TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing charging method, it is basically one-step constant current charging to the cut-off voltage, and then constant voltage charging, which fails to effectively use the current window of different states of charge in the constant current stage
And when the charging current of the battery is too large during the constant current charging process, there will be a risk of lithium deposition, and when the charging current is too small, the charging speed is too slow

Method used

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  • Charging method, electronic device and storage medium
  • Charging method, electronic device and storage medium
  • Charging method, electronic device and storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0113] The ambient temperature is 45°C.

[0114] Charge and discharge process:

[0115] Step 1: Use a constant current of 1C to charge the battery until the battery voltage reaches 4.2V;

[0116] Step 2: Use a constant current of 0.8C to charge the battery until the battery voltage reaches the cut-off voltage of 4.3V;

[0117] Step 3: Charge the battery with a constant current of 0.6C until the voltage of the battery reaches 4.4V;

[0118] Step 4: Use a constant voltage of 4.4V to charge the battery until the battery current reaches 0.4C;

[0119] Step 5: Use a constant current of 0.4C to charge the battery until the battery voltage reaches the cut-off voltage of 4.45V;

[0120] Step 6: Continue to use a constant voltage of 4.45V to charge the battery until the battery current reaches the cut-off current of 0.13C;

[0121] Step 7: Let the battery stand for 5 minutes;

[0122] Step 8: Discharge the battery with a constant current of 0.5C until the voltage of the battery is...

Embodiment 2

[0126] The ambient temperature is 45°C.

[0127] Charge and discharge process:

[0128] Step 1: Use a constant voltage of 4V to charge the battery until the battery current reaches 0.9C;

[0129] Step 2: Use a constant voltage of 4.2V to charge the battery until the battery current reaches 0.7C;

[0130] Step 3: Use a constant voltage of 4.35V to charge the battery until the battery current reaches 0.5C;

[0131] Step 4: Use a constant current of 0.5C to charge the battery until the battery voltage reaches 4.4V;

[0132] Step 5: Use a constant voltage of 4.4V to charge the battery until the battery current reaches 0.3C;

[0133] Step 6: Use a constant current of 0.3C to charge the battery until the battery voltage reaches the cut-off voltage of 4.45V;

[0134] Step 7: Continue to use a constant voltage of 4.45V to charge the battery until the battery current reaches the cut-off current of 0.13C;

[0135] Step 8: Let the battery stand for 5 minutes;

[0136] Step 9: Disch...

Embodiment 3

[0140] The ambient temperature is 45°C.

[0141] Charge and discharge process:

[0142] Step 1: Use a constant current of 0.7C to charge the battery until the battery voltage reaches 4.3V;

[0143] Step 2: Use a constant voltage of 4.3V to charge the battery until the current of the battery reaches the cut-off current of 0.5C;

[0144] Step 3: Use a constant current of 0.5C to charge the battery until the battery voltage reaches 4.4V;

[0145] Step 4: Use a constant voltage of 4.4V to charge the battery until the current of the battery reaches the cut-off current of 0.3C;

[0146] Step 5: Use a constant current of 0.3C to charge the battery until the battery voltage reaches the cut-off voltage of 4.45V;

[0147] Step 6: Continue to use a constant voltage of 4.45V to charge the battery until the battery current reaches the cut-off current of 0.13C;

[0148] Step 7: Let the battery stand for 5 minutes;

[0149] Step 8: Discharge the battery with a constant current of 0.5C u...

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PUM

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Abstract

The invention provides a battery charging method, which comprises the following steps: in a first stage, charging a battery to a first stage voltage in a first charging mode or a second charging mode; and in the second stage, chaging the battery to a second-stage voltage in a third charging mode, wherein the second-stage voltage is larger than the first-stage voltage, and the third charging mode adopts the first charging mode or the second charging mode. The invention further provides an electronic device and a storage medium. According to the charging method provided by the invention, the charging speed of the battery in the charging process can be improved, and the total charging time is shortened.

Description

technical field [0001] The present application relates to the field of battery technology, and in particular to a battery charging method, an electronic device, and a storage medium. Background technique [0002] The charging method commonly used now is the constant current and constant voltage charging method, that is, constant current charging to the charging limit voltage, and then constant voltage charging at the charging limit voltage, where the charging limit voltage refers to the battery changing from constant current charging to constant voltage charging The maximum voltage value at the time, or the limit voltage written on the battery product packaging. The constant current and constant voltage charging method is used because there is polarization in the battery during the charging process, and the larger the current, the more obvious the polarization. When the constant current is charged to the charge limit voltage, due to the polarization, the cell is not fully c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H01M10/44
CPCH01M10/44H02J7/007H02J7/00Y02E60/10
Inventor 张涵翔
Owner NINGDE AMPEREX TECH
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