Car power source apparatus
First Claim
1. A car power source apparatus comprising:
- a battery having a plurality of battery modules connected in series on the positive and negative sides of a reference node, and a voltage detection circuit for detecting the voltage of one or a plurality of battery modules with respect to the reference node of the battery;
wherein the reference node of the battery is connected to the voltage detection circuit via a reference connection line, voltage detection nodes of the battery are connected to the voltage detection circuit via voltage detection lines, and voltage detection node voltages are detected by the voltage detection circuit to determine battery module voltages; and
wherein the voltage detection circuit has detection switches connected in voltage detection lines, the voltage detection circuit detects voltage detection node voltages with the detection switches in the OFF state, and reference connection line open circuit is detected from those detected voltages.
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Accused Products
Abstract
The car power source apparatus is provided with a battery having a plurality of battery modules connected in series on positive and negative sides of a reference node, and a voltage detection circuit to detect battery module voltage with respect to the battery reference node. The battery reference node of the power source apparatus is connected to the voltage detection circuit via a reference connection line, and battery voltage detection nodes are connected to the voltage detection circuit via voltage detection lines. The voltage detection circuit detects detection node voltages to determine battery module voltages. The voltage detection circuit has detection switches connected in voltage detection lines, detection node voltages are detected with detection switches in the OFF state, and reference connection line open circuit is detected from those detected voltages.
16 Citations
18 Claims
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1. A car power source apparatus comprising:
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a battery having a plurality of battery modules connected in series on the positive and negative sides of a reference node, and a voltage detection circuit for detecting the voltage of one or a plurality of battery modules with respect to the reference node of the battery;
wherein the reference node of the battery is connected to the voltage detection circuit via a reference connection line, voltage detection nodes of the battery are connected to the voltage detection circuit via voltage detection lines, and voltage detection node voltages are detected by the voltage detection circuit to determine battery module voltages; and
wherein the voltage detection circuit has detection switches connected in voltage detection lines, the voltage detection circuit detects voltage detection node voltages with the detection switches in the OFF state, and reference connection line open circuit is detected from those detected voltages. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification