发明名称 |
SEMICONDUCTOR DEVICE AND BATTERY VOLTAGE MONITORING DEVICE |
摘要 |
In a battery voltage monitoring device including a battery voltage monitoring IC coupled to a plurality of unit cell groups configuring an assembled battery by being serially coupled in multiple stages and measuring voltage of each of the unit cells and a system control unit controlling the whole, communication between the system control unit and the battery voltage monitoring ICs is realized in consideration of fail-safe. The system control unit and the plurality of battery voltage monitoring ICs are coupled to each other by a communication path using a daisy chain. The battery voltage monitoring IC has a placement setting pin designating, by a binary code, a unit cell group to which the IC is coupled, in the unit cell groups. When it is detected that the Hamming distance between the code indicative of coupling to a group of the highest potential or a group of the lowest potential and a state actually set in the placement setting pin is 1, occurrence of failure such as line disconnection, short-circuit, or the like in the placement setting pin is determined, and an output to a communication path is interrupted by being set to high impedance. |
申请公布号 |
EP2899556(A4) |
申请公布日期 |
2016.04.20 |
申请号 |
EP20120884301 |
申请日期 |
2012.09.10 |
申请人 |
RENESAS ELECTRONICS CORPORATION |
发明人 |
FUKUTE, AKIKO;ENOMOTO, RYOSUKE;KIMURA, JUNKO;UKAI, TOSHITAKA |
分类号 |
G01R31/36;B60L3/00;B60L11/18;H01M10/48;H04Q9/00 |
主分类号 |
G01R31/36 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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