Battery monitoring apparatus with monitoring integrated circuit selectively powered by a high voltage battery or low voltage power supply powered by a low voltage battery
First Claim
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1. A battery monitoring apparatus comprising:
- a plurality of monitoring integrated circuits (ICs) ICs including at least one monitoring integrated circuit (IC) that is electrically connected to a high-voltage battery formed of a plurality of cells and configured to monitor the high-voltage battery in a plurality of modes of operation, the plurality of modes of operation including first-class modes of operation, in which the power consumption of the at least one monitoring IC is equal to or greater than a predetermined value, and second-class modes of operation, in which the power consumption of the at least one monitoring IC is less than the predetermined value; and
a low-voltage power supply circuit configured to deliver power that is lower in voltage than the power of the high-voltage battery from a low-voltage battery to the at least one monitoring IC, the low-voltage battery being separate from the high-voltage battery,wherein a power supply to the at least one monitoring IC is selected from a group of the high-voltage battery and the low-voltage power supply circuit depending on the mode of operation of the at least one monitoring IC,in the first-class modes of operation, the at least one monitoring IC is powered by the low-voltage power supply circuit,in the second-class modes of operation, the at least one monitoring IC is powered only by the high-voltage battery,the second-class modes of operation include a sleep mode of operation, in which none of various control functions are executed, and an equalization mode of operation, in which the plurality of cells forming the high-voltage battery are equalized in capacity,the low-voltage power supply circuit comprises an insulating portion, and power originating from the low-voltage battery is delivered to the at least one monitoring IC through the insulating portion of the low-voltage power supply circuit, andthe low-voltage power supply circuit comprises a centralized transformer configured to deliver power to the plurality of monitoring ICs.
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Abstract
A battery monitoring apparatus capable of reducing power consumption. At least one monitoring integrated circuit (IC) is electrically connected to a high-voltage battery formed of a plurality of cells and configured to monitor the high-voltage battery in a plurality of modes of operation. A low-voltage power supply circuit can deliver power of a lower voltage than the power of the high-voltage battery to the at least one monitoring IC. A power supply to the at least one monitoring IC is selected from a group of the high-voltage battery and the low-voltage power supply circuit depending on the mode of operation the at least one monitoring IC.
113 Citations
10 Claims
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1. A battery monitoring apparatus comprising:
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a plurality of monitoring integrated circuits (ICs) ICs including at least one monitoring integrated circuit (IC) that is electrically connected to a high-voltage battery formed of a plurality of cells and configured to monitor the high-voltage battery in a plurality of modes of operation, the plurality of modes of operation including first-class modes of operation, in which the power consumption of the at least one monitoring IC is equal to or greater than a predetermined value, and second-class modes of operation, in which the power consumption of the at least one monitoring IC is less than the predetermined value; and a low-voltage power supply circuit configured to deliver power that is lower in voltage than the power of the high-voltage battery from a low-voltage battery to the at least one monitoring IC, the low-voltage battery being separate from the high-voltage battery, wherein a power supply to the at least one monitoring IC is selected from a group of the high-voltage battery and the low-voltage power supply circuit depending on the mode of operation of the at least one monitoring IC, in the first-class modes of operation, the at least one monitoring IC is powered by the low-voltage power supply circuit, in the second-class modes of operation, the at least one monitoring IC is powered only by the high-voltage battery, the second-class modes of operation include a sleep mode of operation, in which none of various control functions are executed, and an equalization mode of operation, in which the plurality of cells forming the high-voltage battery are equalized in capacity, the low-voltage power supply circuit comprises an insulating portion, and power originating from the low-voltage battery is delivered to the at least one monitoring IC through the insulating portion of the low-voltage power supply circuit, and the low-voltage power supply circuit comprises a centralized transformer configured to deliver power to the plurality of monitoring ICs.
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2. A battery monitoring apparatus comprising:
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at least one monitoring integrated circuit (IC) that is electrically connected to a high-voltage battery formed of a plurality of cells and configured to monitor the high-voltage battery in a plurality of modes of operation, the plurality of modes of operation including first-class modes of operation, in which the power consumption of the at least one monitoring IC is equal to or greater than a predetermined value, and second-class modes of operation, in which the power consumption of the at least one monitoring IC is less than the predetermined value; and a low-voltage power supply circuit configured to deliver power that is lower in voltage than the power of the high-voltage battery from a low-voltage battery to the at least one monitoring IC, the low-voltage battery being separate from the high-voltage battery, wherein a power supply to the at least one monitoring IC is selected from a group of the high-voltage battery and the low-voltage power supply circuit depending on the mode of operation of the at least one monitoring IC, in the first-class modes of operation, the at least one monitoring IC is powered by the low-voltage power supply circuit, in the second-class modes of operation, the at least one monitoring IC is powered only by the high-voltage battery, the low-voltage power supply circuit comprises an insulating portion, and power originating from the low-voltage battery is delivered to the at least one monitoring IC through the insulating portion of the low-voltage power supply circuit, the at least one monitoring IC comprises a plurality of monitoring ICs, and the low-voltage power supply circuit comprises a centralized transformer configured to deliver power to the plurality of monitoring ICs. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10)
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Specification