Charging method, electronic device and storage medium
A charging method, charging and discharging technology, applied in battery circuit devices, circuit devices, secondary battery charging/discharging, etc., can solve the problems of shortening the time of constant current charging, increasing battery impedance, and prolonging the time of constant voltage charging, etc.
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Embodiment 1
[0159] (1) SOC 1 、SOC 2 、SOC 3 The parameter acquisition process of
[0160] Ambient temperature: 25°C;
[0161] Select a fresh battery (take a battery that has undergone 1 charge and discharge cycle as an example, that is, n=1) to obtain the parameter SOC 1 、SOC 2 、SOC 3 , the specific acquisition process is as follows;
[0162] Step 1. Use a constant current of 0.7C to discharge the battery until the battery voltage is 3.0V;
[0163] Step 2. Let the battery stand for 5 minutes;
[0164] Step 3: Use a constant current of 1.0C to charge the battery until the battery voltage reaches the cut-off voltage of 4.2V;
[0165] Step 4. Continue to use a constant voltage of 4.2V to charge the battery until the battery current reaches the cut-off current of 0.5C;
[0166] Step 5. Use a constant current of 0.5C 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);
[0167] Step 6. Continue to...
Embodiment 2
[0185] (1) SOC 1 、SOC 2 、SOC 3 The parameter acquisition process of
[0186] with the SOC of Example 1 1 、SOC 2 、SOC 3 The parameter acquisition process is the same, the difference is that the SOC 1 、SOC 2 、SOC 3 The specific value of , the specific SOC value is shown in the following table 2:
[0187] Table 2 SOC at the end of each constant current and constant voltage charging stage during the nth charging process
[0188] charging steps SOC at charge cut-off The value of the actual SOC 1.0C constant current charging to 4.2V SOC 1 =52.5%
SOC 1 =53%
4.2V constant voltage charging to 0.5C SOC 2 =66.3%
SOC 2 = 67%
0.5C constant current charging to 4.45V SOC 3 =85.9%
SOC 3 =86%
4.45V constant voltage charging to 0.025C SOC 4 = 100%
SOC 4 = 100%
[0189] (2) Charging process
[0190] The same as the charging process of embodiment 1, the difference is that the SOC set in embodiment 2 is...
Embodiment 3
[0198] It should be noted that Embodiment 3 discloses that a fresh battery is used to obtain corresponding charging parameters.
[0199] (1) SOC 1 、SOC 2 、SOC 3 The parameter acquisition process of
[0200] with the SOC of Example 1 1 、SOC 2 、SOC 3 The parameter acquisition process is the same as the specific value selection.
[0201] (2) Charging process
[0202] 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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