Patent ID: 11901525
Assignee: DENSO CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G  Y | IPC G  H

Claim 38:
39. A battery monitoring system for monitoring states of battery cells connected in series so as to form a series connection of battery cells, the battery monitoring system comprising:
at least one current detection unit configured to detect a current value of the series connection of battery cells;
satellite units each associated (i) with one series connection of two or more battery cells included in the series connection of battery cells or (ii) with one of the plurality of battery cells;
voltage detection units each provided in one of the satellite units and each configured to detect a voltage value of the one series connection of two or more battery cells or the one of the plurality of battery cells;
slave units each provided in one of the satellite units and each configured to wirelessly transmit information detected by the voltage detection unit provided in the one of the satellite units;
a master unit configured to wirelessly receive the information transmitted from the slave units; and
a central monitoring unit configured to receive the information received by the master unit, wherein
each of the satellite units is configured to calculate, from the information, an internal resistance of each battery cell and to calculate, based on the calculated internal resistance, the state of the battery cell, and
each of the voltage detection units is configured to determine a frame that is synchronized with the voltage value, among signals of the current values that are output sequentially from the at least one current detection unit.