Method of charging a battery array
First Claim
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1. A method of charging a battery array that performs constant current and constant voltage charging of a battery array, which is a plurality of series connected batteries, while detecting the voltage of each battery, the method comprising:
- detecting a voltage of each of a plurality of battery cells of a battery array at a prescribed sampling rate; and
performing a constant current and constant voltage charging of all the plurality of battery cells of the battery array at a same reduced charging power when a voltage of any battery cell of the battery array exceeds a maximum specified voltage,wherein the maximum specified voltage changes with battery temperature, andwherein a maximum specified voltage for battery charging in a low temperature region is set lower than a maximum specified voltage for battery charging in a standard temperature region.
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Abstract
The method of charging a battery array performs constant current and constant voltage charging of a battery array while detecting the voltage of each battery. The battery array is a plurality of series connected batteries. The charge method detects the voltage of each battery cell at a prescribed sampling rate. When the voltage of any battery cell exceeds a preset maximum specified voltage, charging power is reduced for constant current, constant voltage charging of the battery array.
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Citations
37 Claims
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1. A method of charging a battery array that performs constant current and constant voltage charging of a battery array, which is a plurality of series connected batteries, while detecting the voltage of each battery, the method comprising:
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detecting a voltage of each of a plurality of battery cells of a battery array at a prescribed sampling rate; and performing a constant current and constant voltage charging of all the plurality of battery cells of the battery array at a same reduced charging power when a voltage of any battery cell of the battery array exceeds a maximum specified voltage, wherein the maximum specified voltage changes with battery temperature, and wherein a maximum specified voltage for battery charging in a low temperature region is set lower than a maximum specified voltage for battery charging in a standard temperature region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 17, 18, 19, 20)
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15. A method of charging a battery array that performs constant current and constant voltage charging of a battery array, which is plurality of series connected batteries, while detecting the voltage of each battery, the method comprising:
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detecting a voltage of each of a plurality of battery cells of a battery array at a prescribed sampling rate; and performing a constant current and constant voltage charging of all the plurality of battery cells of the battery array at a same reduced charging power when a voltage of any battery cell of the battery array exceeds a maximum specified voltage, wherein the maximum specified voltage changes with battery temperature, and wherein a maximum specified voltage in a high temperature region is set lower than a maximum specified voltage in a standard temperature region, and is set higher than the maximum specified voltage in a low temperature region. - View Dependent Claims (16, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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Specification