CHARGING METHOD AND DEVICE
First Claim
1. A charging method for a battery, comprising:
- A) enabling a charging device to charge the battery with a first charging voltage and a first charging current, the first charging voltage having a value that is increasing, the first charging current having a value that is constant and that is not greater than a discharge current value of the battery;
B) when it is determined that the value of the first charging voltage is equal to a maximum charging voltage value of the battery, which is greater than a normal charging voltage value of the battery, enabling the charging device to charge the battery with a second charging voltage and a second charging current, the second charging voltage having a value that is equal to the maximum charging voltage value of the battery, the second charging current having a value that is decreasing;
C) when it is determined that the value of the second charging current is not greater than a first predetermined threshold value, which is less than the discharge current value of the battery, enabling the charging device to charge the battery with a third charging voltage and the second charging current, the third charging voltage having a value that is equal to the normal charging voltage value of the battery; and
D) when it is determined that the value of the second charging current is not greater than a second predetermined threshold value, which is less than the first predetermined threshold value, disabling the charging device from charging the battery.
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Accused Products
Abstract
A charging method for a battery includes: enabling a charging device to charge the battery with a first charging voltage having a value that is increasing and a first charging current having a value that is constant; and when it is determined that the value of the first charging voltage is equal to a maximum charging voltage value of the battery, enabling the charging device to charge the battery with a second charging voltage having a value that is equal to a maximum charging voltage value of the battery, and a second charging current having a value that is decreasing. A charging device for realizing the charging method is also disclosed.
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Citations
14 Claims
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1. A charging method for a battery, comprising:
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A) enabling a charging device to charge the battery with a first charging voltage and a first charging current, the first charging voltage having a value that is increasing, the first charging current having a value that is constant and that is not greater than a discharge current value of the battery; B) when it is determined that the value of the first charging voltage is equal to a maximum charging voltage value of the battery, which is greater than a normal charging voltage value of the battery, enabling the charging device to charge the battery with a second charging voltage and a second charging current, the second charging voltage having a value that is equal to the maximum charging voltage value of the battery, the second charging current having a value that is decreasing; C) when it is determined that the value of the second charging current is not greater than a first predetermined threshold value, which is less than the discharge current value of the battery, enabling the charging device to charge the battery with a third charging voltage and the second charging current, the third charging voltage having a value that is equal to the normal charging voltage value of the battery; and D) when it is determined that the value of the second charging current is not greater than a second predetermined threshold value, which is less than the first predetermined threshold value, disabling the charging device from charging the battery. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A charging device for a battery, comprising:
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a control unit stored with a battery specification therein, the battery specification including a normal charging voltage value, a maximum charging voltage value, and a discharge current value of the battery; and a charging unit coupled to and controlled by said control unit so as to charge the battery in a first charging mode, where said charging unit charges the battery with a first charging voltage and a first charging current, the first charging voltage having a value that is increasing, the first charging current having a value that is constant and that is not greater than the discharge current value of the battery, a second charging mode when it is determined by the control unit that the first charging voltage is equal to the maximum charging voltage of the battery, which is greater than the normal charging voltage value of the battery, where said charging unit charges the battery with a second charging voltage and a second charging current, the second charging voltage having a value that is equal to the maximum charging voltage value of the battery, the second charging current having a value that is decreasing, and a third charging mode, where the charging unit charges the battery with a third charging voltage and the second charging current, the third charging voltage having a value that is equal to the normal charging voltage value of the battery. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification