Battery set structure and charge/discharge control apparatus for lithium-ion battery
First Claim
1. A battery pack comprising:
- a secondary battery;
means for monitoring battery voltages of battery cells constituting the secondary battery;
means for comparing the battery voltages with a predetermined voltage value to detect an overdischarge state of the secondary battery; and
means for outputting detection information, detected by the means for comparing, to a portion outside the battery pack.
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Abstract
In a battery-driven portable computer, a battery pack is constituted by m battery sets connected in series each including n lithium-ion secondary battery cells connected in parallel. A voltage monitor for monitoring the voltage of the terminal electrode of each battery set and a charger for independently appropriately charging each battery set in accordance with a monitor result are arranged, thereby realizing battery driving by a lithium-ion secondary battery pack having a large capacity. A computer system monitors the voltages of the battery cells which are part of a secondary battery by comparing the battery voltages with a predetermined voltage value in order to detect overdischarge (undervoltage) or overcharge (overvoltage), outputs this information outside of the battery pack, and terminates processing prior to a circuit disconnect.
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Citations
11 Claims
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1. A battery pack comprising:
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a secondary battery; means for monitoring battery voltages of battery cells constituting the secondary battery; means for comparing the battery voltages with a predetermined voltage value to detect an overdischarge state of the secondary battery; and means for outputting detection information, detected by the means for comparing, to a portion outside the battery pack.
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2. A battery pack comprising:
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a secondary battery; means for monitoring battery voltages of battery cells constituting the secondary battery; means for comparing the battery voltages with a predetermined voltage value to detect an overcharge state of the secondary battery; and means for outputting detection information, detected by the means for comparing, to a portion outside the battery pack. - View Dependent Claims (3)
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4. A computer system comprising:
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a computer main body; a battery pack having a secondary battery, means for monitoring battery voltages of battery cells constituting the secondary battery, means for comparing the battery voltages with a predetermined voltage value, and means for outputting detection information, detected by the means for comparing, to a portion outside the battery pack; and a circuit arranged outside the battery pack for disconnecting an electrical path of the secondary battery, wherein the circuit disconnects the electrical path on the basis of the detection information. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11)
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Specification