Method and apparatus for charging and discharging a rechargeable battery
First Claim
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1. A battery protection system for a rechargeable battery, comprising:
- a switch module that selectively interrupts battery current based on a control signal;
a battery voltage sensor that senses battery voltage;
a battery temperature sensor that generates a battery temperature signal; and
a control module that generates said control signal based on said battery temperature signal and said battery voltage.
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Abstract
A battery protection system is provided for a rechargeable battery. The system has a switch module that selectively interrupts battery current based on a control signal, a battery voltage sensor that senses battery voltage, a battery temperature sensor that generates a battery temperature signal, and a control module that generates said control signal based on said battery temperature signal and said battery voltage.
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Citations
24 Claims
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1. A battery protection system for a rechargeable battery, comprising:
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a switch module that selectively interrupts battery current based on a control signal;
a battery voltage sensor that senses battery voltage;
a battery temperature sensor that generates a battery temperature signal; and
a control module that generates said control signal based on said battery temperature signal and said battery voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A battery protection circuit comprising:
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a switch module that selectively interrupts battery current based on a control signal;
a first oscillator module that generates a first signal having a first period;
a temperature dependent oscillator module that generates a second signal having a second period; and
a duty cycle generator that receives said first signal and said second signal and generates said control signal, wherein said control signal is pulse-width modulated at said first period with a duty cycle established by said second period. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A method for protecting a rechargeable battery, comprising:
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monitoring a battery temperature;
monitoring a battery voltage;
selectively interrupting current flow to the battery based on said battery temperature and said battery voltage. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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Specification