Fault-tolerant electronic battery sensing
OwnerJaesik Lee, Inseop Lee +2inventors
InventorsJaesik Lee, Inseop Lee, Minkyu Lee, Andrew M. Chon
Life of this patent
Estimating the term…
Abstract
A battery sensing system acquires battery information of a battery string comprised of multiple battery cells connected in series. The system includes a plurality of battery sensing channels and a digital core including a control unit. Each of the battery sensing channels is configured to acquire inter-terminal voltages of a set of battery cells which are connected in series, so as to comprise at least a portion of a battery string. In some scenarios, the battery sensing system is a system-on-a-chip, disposed in a single integrated circuit package.
Claims19
A battery sensing system that acquires battery information of a battery string comprised of multiple battery cells connected in series, comprising:
- a plurality of sensing channels, each configured to acquire inter-terminal voltages of a set of the plurality of battery cells which are connected in series comprising at least a portion of the battery string, each sensing channel comprising:
- a voltage sensing front end circuit which is configured to selectively provide as an output a plurality of analog voltage measurements, each corresponding to a voltage output of an individual one of the plurality of battery cells in the set;
- main and redundant analog-to-digital converters (ADCs), each configured to receive the plurality of analog voltage measurements and generate a plurality of digital voltage measurements;
- a channel power management unit (CPMU) configured to regulate a power supply voltage applied to each of the voltage sensing front circuit, and the main and redundant ADCs;
- and
- a digital core including a control unit configured to monitor the plurality of digital voltage measurements from each of the sensing channels, and to determine based on said monitoring the occurrence of a sensing system fault in an identified faulty one of the plurality of sensing channels.
Dependencies are inferred from the claim text.