CHARGER AND CHARGER CONTROLLING METHOD FOR A BATTERY ROD HAVING A SMALL BATTERY CAPACITY
First Claim
1. A charger controlling method for a battery rod having a small battery capacity, which is used to charge a battery rod comprising a charging management circuit, and the battery capacity C of the battery rod less than 100 mAh, wherein the method comprises:
- S1;
defining a preset constant charging current I based on the battery capacity C of the battery rod in order to charge the battery rod with a current of KC, and the preset constant charging current I is less than a default constant charging current of the charging management circuit;
wherein, the value of K is less than 1, and when the unit of the battery capacity C is mAh and the unit of the preset constant charging current I is mA, the value of the preset constant charging current I and the value of the battery capacity C conform to the following relationship;
I=K*C;
S2;
detecting a real-time charging current Itemp of the battery rod in real time;
S3;
comparing the real-time charging current Itemp with the preset constant charging current I, and adjusting the output charging voltage according to the comparison result so as to charge the battery rod with a current of KC.
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Accused Products
Abstract
A charger and a charger controlling method for a battery rod having a small battery capacity are provided, which are used to charge a battery rod comprising a charging management circuit, and the battery capacity C of the battery rod is less than 100 mAh. The method comprises: defining a preset constant charging current I based on the battery capacity C of the battery rod in order to charge the battery rod with a current of KC, wherein, the value of K is less than 1, and the value of I and the value of C conform to the following relationship: I=K*C; detecting a real-time charging current Itemp of the battery rod in real time; comparing Itemp with I, and adjusting the output charging voltage according to the comparison result to charge the battery rod with a current of KC.
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Citations
20 Claims
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1. A charger controlling method for a battery rod having a small battery capacity, which is used to charge a battery rod comprising a charging management circuit, and the battery capacity C of the battery rod less than 100 mAh, wherein the method comprises:
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S1;
defining a preset constant charging current I based on the battery capacity C of the battery rod in order to charge the battery rod with a current of KC, and the preset constant charging current I is less than a default constant charging current of the charging management circuit;
wherein, the value of K is less than 1, and when the unit of the battery capacity C is mAh and the unit of the preset constant charging current I is mA, the value of the preset constant charging current I and the value of the battery capacity C conform to the following relationship;
I=K*C;S2;
detecting a real-time charging current Itemp of the battery rod in real time;S3;
comparing the real-time charging current Itemp with the preset constant charging current I, and adjusting the output charging voltage according to the comparison result so as to charge the battery rod with a current of KC. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A charger for a battery rod having a small battery capacity, which is used to charge a battery rod including a charging management circuit, and the battery capacity C of the battery rod less than 100 mAh;
- the charger comprising a charging input interface defined to connect to an external power source and a charging output interface defined to connect to the battery rod, wherein the charger further comprises a control unit, a constant current output unit and a current sampling unit;
the control unit is connected to the charging input interface, the constant current output unit and the current sampling unit respectively;
the constant current output unit is further connected to the charging input interface and the charging output interface respectively;
the current sampling unit is further connected to the charging output interface;the current sampling unit is used to detect a real-time charging current of the battery rod in real time; the control unit is used to define a preset constant charging current based on the battery capacity of the battery rod, wherein the preset constant charging current is less than a default constant charging current of the charging management circuit, and the value of the preset constant charging current is less than the value of the battery capacity;
the control unit is also used to compare the real-time charging current with the preset constant charging current, and output a control signal to the constant current output unit according to the comparison result;the constant current output unit is used to adjust the output charging voltage to the charging output interface based on the control signal so as to charge the battery rod. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
- the charger comprising a charging input interface defined to connect to an external power source and a charging output interface defined to connect to the battery rod, wherein the charger further comprises a control unit, a constant current output unit and a current sampling unit;
Specification