Method for charging lithium batteries with power dissipation control

A system for controlling the power dissipated by a device when charging a battery in said device comprising:

• one or more circuits operable for, at least:
• computing a difference between a first voltage and a second voltage, said first voltage generated by a charger for charging said device, said second voltage corresponding to the voltage across said battery;
• said charger providing current to charge said battery;
• and
• generating a controlled battery current, wherein said controlled battery current is equal to a minimum of a first value and a second value, said first value equal to the maximum value of current during a typical charge cycle of said battery divided by said difference, said second value equal to a maximum power dissipation tolerated by said device.

A method of controlling the power dissipated by a device when charging a battery in said device comprising:

• first monitoring a first voltage output by a charger used for said charging said battery;
• second monitoring a second voltage at said battery;
• first determining a first current based on a power dissipation value associated with said device, said first voltage, and said second voltage;
• second determining a minimum of said first current and a second current, wherein said second current equals the maximum charging current during a typical charge cycle of said device;
• and
• applying a control signal to a control circuit to generate said minimum, said control circuit communicatively coupled to:
• said charger at a first port, and
• said battery at a second port.

A system for controlling the power dissipated by a device when charging a battery in said device comprising:

• one or more circuits operable for, at least:
• first monitoring a first voltage output by a charger used for said charging said battery;
• second monitoring a second voltage at said battery;
• first determining a first current based on a power dissipation value associated with said device, said first voltage, and said second voltage;
• second determining a minimum of said first current and a second current, wherein said second current equals the maximum charging current during a typical charge cycle of said device;
• and
• applying a control signal to a control circuit of said one or more circuits to generate said minimum, said control circuit communicatively coupled to:
• said charger at a first port, and
• said battery at a second port.

A method of controlling the power dissipated by a device when charging a battery in said device comprising:

• monitoring the battery voltage of said battery;
• first determining a first current based on a power dissipation value associated with said device, said battery voltage, and an estimated voltage;
• second determining a minimum of said first current and a second current, wherein said second current equals the maximum charging current during a typical charge cycle of said device;
• and
• applying a control signal to a control circuit to generate said minimum, said control circuit communicatively coupled to:
• said charger at a first port, and
• said battery at a second port.

A system for controlling the power dissipated by a device when charging a battery in said device, said system comprising:

• monitoring the battery voltage of said battery;
• first determining a first current based on a power dissipation value associated with said device, said battery voltage, and an estimated voltage output by a charger;
• second determining a minimum of said first current and a second current, wherein said second current equals the maximum charging current during a typical charge cycle of said device;
• and
• applying a control signal to a control circuit to generate said minimum, said control circuit communicatively coupled to:
• said charger at a first port, and
• said battery at a second port.