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Charging method, electronic device and storage medium

A charging method and charging voltage technology, applied in battery circuit devices, circuit devices, secondary battery charging/discharging, etc., can solve the problem of prolonging the time of constant voltage charging, shortening the time of constant current charging, and long total battery charging time, etc. question

Pending Publication Date: 2021-01-26
NINGDE AMPEREX TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, as the number of charging cycles and the use time of the battery increase, the impedance of the battery increases, which will shorten the time of constant current charging and prolong the time of constant voltage charging of the battery, resulting in the total charging time of the battery getting longer

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

[0099] (1) SOC 0 The parameter acquisition process of

[0100] Ambient temperature: 25°C;

[0101] Select fresh battery to get parameter SOC 0 , the specific acquisition process is as follows;

[0102] Step 1. Use a constant current of 1.0C to discharge the battery until the voltage of the battery is 3.0V;

[0103] Step 2. Let the battery stand for 5 minutes;

[0104] Step 3: Use a constant current of 1.5C to charge the battery until the battery voltage reaches the cut-off voltage of 4.45V (which can be understood as the charging limit voltage);

[0105] Step 4. Continue to use a constant voltage of 4.45V to charge the battery until the battery current reaches the cut-off current of 0.05C;

[0106] Calculate the SOC at the end of constant current charging in step 3 to be 70.6%, and the SOC 0 The value is 70.6%.

[0107] (2) Charging process

[0108] Ambient temperature: 25°C;

[0109] Charging process:

[0110] Step 1: Obtain the actual capacity Q of the battery;

...

Embodiment 2

[0118] (1) SOC 0 The parameter acquisition process of

[0119] with the SOC of Example 1 0 The parameter acquisition process is the same, and the SOC at the end of constant current charging is 70.6%. The difference is that the SOC 0 The value is 71%.

[0120] (2) Charging process

[0121] Same as the charging process of Example 1, the difference is the SOC 1 = 71%.

Embodiment 3

[0129] It should be noted that Embodiment 3 discloses that a fresh battery is used to obtain corresponding charging parameters.

[0130] (1) SOC 0 The parameter acquisition process of

[0131] with the SOC of Example 1 0 The parameter acquisition process is the same, and the SOC at the end of constant current charging of the battery is 70.6%, and the SOC 0 The value is 70.6%.

[0132] (2) Charging process

[0133] The charging process is the same as in Example 1, except that a battery that has been cycled 100 times is used for charging.

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Abstract

The charging method of the battery comprises the following steps that in the mth charging and discharging cycle, constant-current charging is conducted on the battery with a charging current, and m isany two or more integers of 1, 2, 3,..., x; wherein a first state of charge SOC1 of the battery when the constant current charging stage in any charge-discharge cycle is cut off is the same as a standard state of charge SOC0 (S21); SOCb is smaller than or equal to SOC0 and smaller than or equal to SOCa+k, SOCa is the state of charge or the preset value of the battery when the constant-current charging stage is cut off in the nth charging and discharging cycle, and SOCb is the state of charge or the preset value of the battery when the constant-current charging stage is cut off in the m1th charging and discharging cycle. By adopting the charging method of the battery, the full charging time of the battery can be shortened, the overcharging phenomenon of the battery can be avoided, and theservice life of the battery can be prolonged.

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] At present, the commonly used charging method for lithium-ion batteries is to continuously charge the lithium-ion battery to a certain voltage (which can be understood as the charging limit voltage) through a preset constant current, and then charge the lithium-ion battery with a constant voltage at this voltage to full capacity. charging state. In this case, as the number of charging cycles and the use time of the battery increase, the impedance of the battery increases, which will shorten the time of constant current charging and prolong the time of constant voltage charging of the battery, resulting in the total charging time of the battery longer and longer. Contents of the invention [0003] In view of this, it is necessary to provide a charging method, an ...

Claims

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Application Information

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IPC IPC(8): H02J7/00
CPCH02J7/0048H02J7/00302H02J7/007182H02J7/007194H01M10/44H02J7/0071H02J7/00712Y02E60/10
Inventor 关婷朱珊吴飞
Owner NINGDE AMPEREX TECH
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