BATTERY CONTROL SYSTEM, BATTERY PACK, ELECTRONIC DEVICE AND CHARGER
First Claim
1. A battery control system comprising:
- a measurement unit that measures voltages of a plurality of battery units which are connected in series to each other; and
a battery control unit that controls discharge of the battery units on the basis of the voltages measured by the measurement unit,wherein the battery control unitspecifies a minimum voltage unit in which the voltage is lowest, on the basis of the voltages measured by the measurement unit, when the discharge of the battery unit is performed, andoutputs a first signal for reducing a discharge current in the discharge before the minimum voltage unit is over-discharged.
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Accused Products
Abstract
A battery pack (10) includes a plurality of battery cells (100), a measurement unit (measurement unit (200)), and a battery control unit (battery control unit (400)). The plurality of battery cells 100 are connected in series to each other. The measurement unit (200) measures voltages of the battery cells (100). The battery control unit (400) controls discharge of the battery cells (100) on the basis of the voltages measured by the measurement unit (200). In addition, when the battery cells (100) perform the discharge, the battery control unit (400) specifies a minimum voltage cell in which the voltage is lowest on the basis of the voltages measured by the measurement unit (200). Further, before the minimum voltage cell is over-discharged, the battery control unit (400) outputs a first signal for reducing a discharge current in the discharge.
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Citations
21 Claims
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1. A battery control system comprising:
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a measurement unit that measures voltages of a plurality of battery units which are connected in series to each other; and a battery control unit that controls discharge of the battery units on the basis of the voltages measured by the measurement unit, wherein the battery control unit specifies a minimum voltage unit in which the voltage is lowest, on the basis of the voltages measured by the measurement unit, when the discharge of the battery unit is performed, and outputs a first signal for reducing a discharge current in the discharge before the minimum voltage unit is over-discharged. - View Dependent Claims (2, 3, 4, 5)
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6. A battery control system comprising:
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a measurement unit that measures voltages of a plurality of battery units which are connected in series to each other; and a battery control unit that controls charge of the battery units on the basis of the voltages measured by of the measurement unit, wherein the battery control unit specifies a maximum voltage unit in which the voltage is highest, on the basis of the voltages measured by the measurement unit, when the charge is performed on the battery units, and outputs a first signal for reducing a charge current in the charge before the maximum voltage unit is over-charged. - View Dependent Claims (7, 8, 9)
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10. A battery pack comprising:
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a plurality of battery units which are connected in series to each other; a measurement unit that measures voltages of the battery units; and a battery control unit that controls discharge of the battery units on the basis of the voltages measured by the measurement unit, wherein the battery control unit specifies a minimum voltage unit in which the voltage is lowest, on the basis of the voltages measured by the measurement unit, when the discharge of the battery unit is performed, and outputs a first signal for reducing a discharge current in the discharge before the minimum voltage unit is over-discharged.
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11. The battery pack comprising:
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a plurality of battery units which are connected in series to each other; a measurement unit that measures voltages of the battery units; and a battery control unit that controls charge of the battery units on the basis of the voltages measured by of the measurement unit, wherein the battery control unit specifies a maximum voltage unit in which the voltage is highest, on the basis of the voltages measured by the measurement unit, when the charge is performed on the battery units, and outputs a first signal for reducing a charge current in the charge before the maximum voltage unit is over-charged.
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12. An electronic device comprising:
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a battery pack including a plurality of battery units which are connected in series to each other; a measurement unit that measures voltages of the battery units; a battery control unit that controls discharge of the battery units on the basis of the voltages measured by the measurement unit; a load that consumes power of the discharge from the battery pack; and a load control unit, connected to the battery control unit which controls the load, wherein the battery control unit specifies a minimum voltage unit in which the voltage is lowest, on the basis of the voltages measured by the measurement unit, when the discharge of the battery unit is performed, and outputs a first signal for reducing a discharge current in the discharge before the minimum voltage unit is over-discharged, and the load control unit reduces the discharge current when the first signal is received from the battery control unit. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21. A charger comprising:
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a measurement unit that measures voltages of a plurality of battery units which are connected in series to each other; a battery control unit that controls charge of the battery units on the basis of the voltages measured by of the measurement unit; and a charge control unit, connected to the battery control unit, which controls a charge voltage and a charge current in the charge, wherein the battery control unit specifies a maximum voltage unit in which the voltage is highest, on the basis of the voltages measured by the measurement unit, when the charge is performed on the battery units, and outputs a first signal for reducing the charge current in the charge before the maximum voltage unit is over-charged, and the charge control unit reduces the charge current when the first signal is received from the battery control unit.
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Specification