Battery charge circuit with multi-charge stage and method thereof
First Claim
1. A charge circuit for charging at least one battery comprising:
- a first current generating circuit for generating a first charge power having a first charge current in pulse form with a first frequency and a first charge voltage to charge the at least one battery, wherein the first charge current in the first charge stage remains substantially constant, and the first charge voltage remains a first constant voltage;
a voltage generating circuit connected to the first current generating circuit for controlling the first charge power;
a voltage control circuit connected to the voltage generating circuit for generating a first constant voltage or a second constant voltage; and
a second current generating circuit connected to the voltage generating circuit for generating a variant power comprising a variant current in pulse form with a second frequency, wherein a charge voltage included in the variant power varies with the second frequency,wherein the voltage control circuit comprises;
a second transistor and a third transistor;
an eleventh resistor and a twelfth resistor connected in series;
a thirteenth resistor having a terminal that is connected to the second transistor;
a fourteenth resistor connected to the third transistor;
a fifteenth resistor is connected to the second transistor; and
a sixteenth resistor is connected to the second transistor;
wherein when the third transistor turns on, the first constant voltage is generated, and when the third transistor turns off, the second constant voltage is generated.
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Accused Products
Abstract
A charge circuit having multi charge stages for charging at least one battery includes: a first current generating circuit for generating a first charge power having a first charge current in pulse form with a first frequency and a first charge voltage to charge the at least one battery; a voltage generating circuit connected to the first current generating circuit for controlling the first charge power having a first charge current in pulse form with a first frequency and a first charge voltage; a voltage control circuit connected to the voltage generating circuit for generating a first constant voltage and/or a second constant voltage; and a second current generating circuit connected to the voltage generating circuit for generating a variant power comprising a variant current in pulse form with a second frequency wherein a charge voltage included in the variant power varies with the second frequency.
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Citations
22 Claims
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1. A charge circuit for charging at least one battery comprising:
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a first current generating circuit for generating a first charge power having a first charge current in pulse form with a first frequency and a first charge voltage to charge the at least one battery, wherein the first charge current in the first charge stage remains substantially constant, and the first charge voltage remains a first constant voltage; a voltage generating circuit connected to the first current generating circuit for controlling the first charge power; a voltage control circuit connected to the voltage generating circuit for generating a first constant voltage or a second constant voltage; and a second current generating circuit connected to the voltage generating circuit for generating a variant power comprising a variant current in pulse form with a second frequency, wherein a charge voltage included in the variant power varies with the second frequency, wherein the voltage control circuit comprises; a second transistor and a third transistor; an eleventh resistor and a twelfth resistor connected in series; a thirteenth resistor having a terminal that is connected to the second transistor; a fourteenth resistor connected to the third transistor; a fifteenth resistor is connected to the second transistor; and a sixteenth resistor is connected to the second transistor; wherein when the third transistor turns on, the first constant voltage is generated, and when the third transistor turns off, the second constant voltage is generated. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A charge system for charging at least one battery, comprising:
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a panel provided with a plurality of control buttons, each of which corresponds to a respective one of a plurality of specific functions; a microprocessor executing the specific functions when the corresponding control buttons are pressed; and a charge circuit controlled by the microprocessor for charging the at least one battery, the charge circuit comprising; a first current generating circuit for generating a first charge power having a first charge current in pulse form with a first frequency and a first charge voltage to charge the at least one battery, wherein the first charge current in the first charge stage remains substantially constant, the first charge voltage remains a first constant voltage; a voltage generating circuit connected to the first current generating circuit for controlling the first charge power; a voltage control circuit connected to the voltage generating circuit for generating a first constant voltage or a second constant voltage; and a second current generating circuit connected to the voltage generating circuit for generating a variant power comprising a variant current in pulse form with a second frequency, wherein a charge voltage included in the variant power varies with the second frequency, wherein the voltage control circuit comprises; a second transistor and a third transistor; an eleventh resistor and a twelfth resistor connected in series; a thirteenth resistor having a terminal that is connected to the second transistor; a fourteenth resistor connected to the third transistor; a fifteenth resistor is connected to the second transistor; and a sixteenth resistor is connected to the second transistor; wherein when the third transistor turns on, the first constant voltage is generated, and when the third transistor turns off, the second constant voltage is generated. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification