Battery voltage monitoring apparatus
First Claim
1. A battery voltage monitoring apparatus monitoring a voltage of an assembled battery, the assembled battery including a plurality of battery cells, the battery voltage monitoring apparatus comprising;
- a first voltage sensor module that monitors voltages of a plurality of battery cells arranged at a high voltage side; and
a second voltage sensor module that monitors voltages of a plurality of battery cells arranged at a low voltage side,wherein the second voltage sensor module comprises a voltage sensor that is connected to a terminal and detects a voltage of a battery cell connected to the terminal, the terminal being supplied with a power source potential of the second voltage sensor module,wherein the voltage sensor comprises a comparator including a first comparator terminal and a second comparator terminal, the first comparator terminal being supplied with a voltage according to the voltage of the battery cell, the second comparator terminal being supplied with a reference voltage, andwherein the comparator has a hysteresis characteristic and the hysteresis characteristic of the comparator is set according to an output of the comparator evaluated by comparing the reference voltage with a voltage of the terminal which is determined based on the voltage of the battery cell and the power source potential.
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Accused Products
Abstract
A battery voltage monitoring apparatus monitoring a voltage of an assembled battery, the assembled battery including a plurality of battery cells, comprising; a first voltage sensor module that monitors voltages of a plurality of battery cells arranged at a high voltage side; and a second voltage sensor module that monitors voltages of a plurality of battery cells arranged at a low voltage side, wherein the second voltage sensor module comprises a voltage sensor that is connected to a terminal and detects a voltage of a battery cell connected to the terminal, the terminal being supplied with a power source potential of the second voltage sensor module, the voltage sensor comprises a comparator including a first terminal and a second terminal, the first terminal being supplied with a voltage according to the voltage of the battery cell, the second terminal being supplied with a reference voltage.
17 Citations
20 Claims
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1. A battery voltage monitoring apparatus monitoring a voltage of an assembled battery, the assembled battery including a plurality of battery cells, the battery voltage monitoring apparatus comprising;
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a first voltage sensor module that monitors voltages of a plurality of battery cells arranged at a high voltage side; and a second voltage sensor module that monitors voltages of a plurality of battery cells arranged at a low voltage side, wherein the second voltage sensor module comprises a voltage sensor that is connected to a terminal and detects a voltage of a battery cell connected to the terminal, the terminal being supplied with a power source potential of the second voltage sensor module, wherein the voltage sensor comprises a comparator including a first comparator terminal and a second comparator terminal, the first comparator terminal being supplied with a voltage according to the voltage of the battery cell, the second comparator terminal being supplied with a reference voltage, and wherein the comparator has a hysteresis characteristic and the hysteresis characteristic of the comparator is set according to an output of the comparator evaluated by comparing the reference voltage with a voltage of the terminal which is determined based on the voltage of the battery cell and the power source potential. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A battery voltage monitoring apparatus monitoring a voltage of an assembled battery, the assembled battery including a plurality of battery cells, the battery voltage monitoring apparatus comprising;
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a voltage sensor module that monitors voltages of a plurality of battery cells, wherein the voltage sensor module comprises a voltage sensor that is connected to a terminal and detects a voltage of a battery cell connected to the terminal, wherein the voltage sensor comprises a comparator including a first comparator terminal and a second comparator terminal, the first comparator terminal being supplied with a voltage according to the voltage of the battery cell, the second comparator terminal being supplied with a reference voltage, and wherein the comparator has a hysteresis characteristic and the hysteresis characteristic of the comparator is set according to an output of the comparator evaluated by the comparator comparing the reference voltage with a voltage of the terminal which is determined based on the voltage of the battery cell and the power source potential. - View Dependent Claims (18, 19, 20)
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Specification