Patent ID: 11876192
Assignee: DENSO CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G  Y | IPC G  H

Claim 0:
1. An assembled battery monitoring apparatus, comprising:
a plurality of monitoring circuits connected to an assembled battery configured by connecting a plurality of battery cells in multiple stages in series, to monitor a state of the assembled battery; and
a control circuit connected with the plurality of monitoring circuits in a daisy chain connection, to transmit a command with a check code to the plurality of monitoring circuits on a downstream side in the daisy chain connection with each of cycles to provide an instruction,
wherein,
in response to a first monitoring circuit that is one of the plurality of monitoring circuits and that starts to receive the command, the first monitoring circuit is configured to transmit the command to the downstream side before making a determination based on the check code; and
in response to the first monitoring circuit indicating that the command has not been received over the cycle, the first monitoring circuit is configured to transmit a communication interruption command including an initial value as an included value data, to the downstream side,
wherein,
in response to a second monitoring circuit that is one of the plurality of monitoring circuits and that receives the communication interruption command for a first time, the second monitoring circuit is configured to
transmit the communication interruption command including the initial value as the included value data, to the downstream side, and
store, as a stored value data, the included value data in the received communication interruption command, in a buffer; and
in response to the second monitoring circuit receiving the communication interruption command for a second time after the first time, the second monitoring circuit is further configured to
apply a calculation process on the stored value data that is being stored in the buffer at a time when the second monitoring circuit receives the communication interruption command for the second time, to obtain an updated value, and
transmit the communication interruption command including the updated value as the included value data, to the downstream side, and
wherein,
in response to the control circuit receiving the communication interruption command, the control circuit is configured to identify a location where a communication interruption occurs based on the included value data in the received communication interruption command.