Wireless battery management system and operating method therefor
AssigneesHyundai Motor Company, Kia Corporation
InventorBeomgyu KIM
Life of this patent
Estimating the term…
Abstract
A wireless battery management system may perform a method to manage a battery. A wireless battery management system may include a cell monitoring unit (CMU) configured to measure a voltage of a battery cell in a battery system, and a battery management unit (BMU) configured to acquire, by wireless communication with the CMU, sensing data measuring the voltage of the battery cell. The BMU may be configured to, based on determining a momentary disconnection of a battery based on a battery pack voltage calculated from the sensing data, reset a state of charge (SOC) using a periodically stored SOC value.
Claims20
A wireless battery management system comprising:
- a wireless communication interface;
- a sensor device comprising one or more sensors configured to measure one or more voltages of one or more battery cells of a battery;
- and
- a battery management unit (BMU) comprising:
- a processor;
- and
- a memory storing at least one instruction that, when executed by the processor communicating with the memory, is configured to cause the BMU to:
- receive, from the sensing device via a wireless communication associated with the wireless communication interface, sensing data indicating the one or more voltages of the one or more battery cells,
- detect, based on the sensing data, a disconnection of the battery;
- based on the detected disconnection of the battery, reset a state of charge (SOC) using a stored SOC value, wherein the SOC is associated with the battery;
- and
- control, based on the reset SOC, one or more relay connections of the battery.
A battery management unit (BMU), comprising:
- a processor;
- and
- a memory storing at least one instruction that, when executed by the processor communicating with the memory, is configured to cause the BMU to:
- receive, from at least one sensor via a wireless communication associated with a wireless communication interface, sensing data indicating a voltage of a battery cell in a battery;
- detect, based on a battery pack voltage determined from the sensing data, a momentary disconnection of the battery wherein the battery pack voltage is a voltage of a battery pack of the battery;
- based on the detected disconnection of the battery, reset a state of charge (SOC) using a stored SOC value, wherein the SOC is associated with the battery;
- and
- control, based on the reset SOC, one or more relay connections of the battery.
A method for operating a wireless battery management system, the method comprising:
- measuring, by a sensor device comprising at least one voltage sensor, a voltage of a battery cell in a battery;
- receiving, via a wireless communication from the sensor device and by a battery management unit (BMU) comprising a processor and a memory, sensing data indicating the measured voltage of the battery cell;
- detecting, based on the sensing data, a disconnection of the battery;
- resetting, by the BMU based on the detected disconnection of the battery, a state of charge (SOC) using a stored SOC value, wherein the SOC is associated with the battery;
- and
- controlling, based on the reset SOC, one or more relay connections of the battery.
Dependencies are inferred from the claim text.