Rechargeable battery with charge control
First Claim
1. A rechargeable battery, comprising:
- at least one rechargeable battery cell;
two connecting terminals adapted to connect the battery to an external electric circuit, to provide a charge current to the at least one battery cell and to output a discharge current provided by the at least one battery cell;
a transistor adapted to provide a variable resistance;
a shunt resistor;
a transistor control circuit; and
a diode;
wherein;
the at least one battery cell, the transistor and the shunt resistor are connected in series between the two connecting terminals;
the transistor control circuit is adapted to vary the resistance provided by the transistor for limiting the charge current provided to the at least one cell depending on the amperage sensed by the shunt resistor; and
the diode is connected in parallel with both the transistor and the shunt resistor to allow the discharge current provided by the at least one battery cell to bypass the transistor and the shunt resistor.
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Accused Products
Abstract
The battery comprises rechargeable battery cell(s), a current regulator varying a charge current provided to the battery cell(s) and a bypass circuit allowing a discharge current provided by the battery cell(s) to bypass the current regulator. The current regulator can limit the charge current depending on the amperage of the charge current and of the temperature of the current regulator. Two connecting terminals provide the charge current to the battery cell(s) and output the discharge current provided by battery cell(s). This battery can be used in existing applications to replace other type of batteries for which the current-generating equipment of the application for charging the battery was originally designed without requiring modification thereof.
37 Citations
20 Claims
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1. A rechargeable battery, comprising:
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at least one rechargeable battery cell;
two connecting terminals adapted to connect the battery to an external electric circuit, to provide a charge current to the at least one battery cell and to output a discharge current provided by the at least one battery cell;
a transistor adapted to provide a variable resistance;
a shunt resistor;
a transistor control circuit; and
a diode;
wherein;
the at least one battery cell, the transistor and the shunt resistor are connected in series between the two connecting terminals;
the transistor control circuit is adapted to vary the resistance provided by the transistor for limiting the charge current provided to the at least one cell depending on the amperage sensed by the shunt resistor; and
the diode is connected in parallel with both the transistor and the shunt resistor to allow the discharge current provided by the at least one battery cell to bypass the transistor and the shunt resistor. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A rechargeable battery, comprising:
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at least one rechargeable battery cell;
two connecting terminals adapted to connect the battery to an external electric circuit, to provide a charge current to the at least one battery cell and to output a discharge current provided by the at least one battery cell;
a current sensor adapted to sense an amperage of the charge current provided to the at least one cell;
a current regulator adapted to limit the charge current provided to the at least one cell depending on the amperage sensed by the current sensor; and
a bypass circuit adapted to allow the discharge current provided by the at least one battery cell to bypass the current regulator. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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17. A rechargeable battery, comprising:
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at least one rechargeable battery cell;
a current regulator adapted to vary a charge current provided to the at least one battery cell; and
a bypass circuit adapted to allow a discharge current provided by the at least one battery cell to bypass the current regulator. - View Dependent Claims (18, 19, 20)
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Specification