Battery monitoring system
First Claim
1. A battery monitoring system, comprising:
- a battery;
a first battery monitoring circuit having a battery voltage monitoring terminal electrically connected to the battery; and
a second battery monitoring circuit having a battery voltage monitoring terminal electrically connected to the battery and electrically interconnected with the first battery monitoring circuit,the second battery monitoring circuit configured to;
monitor a reference voltage of the first battery monitoring circuit; and
output a signal indicating an abnormality of the reference voltage to the first battery monitoring circuit when the second battery monitoring circuit detects that the reference voltage has a value outside a predetermined range,wherein the first battery monitoring circuit is configured to stop monitoring the battery after the first battery monitoring circuit receives the signal indicating the abnormality of the reference voltage from the second battery monitoring circuit.
2 Assignments
0 Petitions
Accused Products
Abstract
Provided is a battery monitoring system that has a high level of safety even under a state in which characteristics of a reference voltage circuit are deteriorated. The battery monitoring system has a configuration in which: a reference voltage of a first battery monitoring IC is monitored by a second battery monitoring IC; and the second battery monitoring IC outputs, when detecting that the reference voltage reaches a value falling outside a predetermined range, a signal indicating an abnormality of the reference voltage to the first battery monitoring IC, and the first battery monitoring IC stops monitoring of a battery when the signal indicating the abnormality of the reference voltage is input to the first battery monitoring IC.
9 Citations
4 Claims
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1. A battery monitoring system, comprising:
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a battery; a first battery monitoring circuit having a battery voltage monitoring terminal electrically connected to the battery; and a second battery monitoring circuit having a battery voltage monitoring terminal electrically connected to the battery and electrically interconnected with the first battery monitoring circuit, the second battery monitoring circuit configured to; monitor a reference voltage of the first battery monitoring circuit; and output a signal indicating an abnormality of the reference voltage to the first battery monitoring circuit when the second battery monitoring circuit detects that the reference voltage has a value outside a predetermined range, wherein the first battery monitoring circuit is configured to stop monitoring the battery after the first battery monitoring circuit receives the signal indicating the abnormality of the reference voltage from the second battery monitoring circuit. - View Dependent Claims (2, 3, 4)
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Specification