US 11,928,008 B2
Watchdog system, watchdog method, and battery management system comprising watchdog system
Hyo Jung Kim, Daejeon (KR); and Jongshik Baek, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 17/430,520
Filed by LG CHEM, LTD., Seoul (KR)
PCT Filed Nov. 4, 2020, PCT No. PCT/IB2020/060337
§ 371(c)(1), (2) Date Aug. 12, 2021,
PCT Pub. No. WO2021/048835, PCT Pub. Date Mar. 18, 2021.
Claims priority of application No. 10-2019-0113110 (KR), filed on Sep. 11, 2019.
Prior Publication US 2022/0129341 A1, Apr. 28, 2022
Int. Cl. G06F 11/00 (2006.01); G06F 9/4401 (2018.01); G06F 11/07 (2006.01); G06F 12/123 (2016.01)
CPC G06F 11/0757 (2013.01) [G06F 9/4401 (2013.01); G06F 11/073 (2013.01); G06F 12/123 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A watchdog system comprising:
a main control unit (MCU) of a battery management system (BMS) including:
a software area including a bootloader area and an application area, wherein either of the bootloader area and the application area is configured to:
generate a watchdog refresh request,
transmit the watchdog refresh request to an external watchdog module, and
determine whether a received refresh request timing of the transmitted watchdog refresh request corresponds to a window open time in which a watchdog refresh is able to be performed by the external watchdog module; and
a shared memory area storing a last watchdog refresh timing transmitted from the external watchdog module; and
the external watchdog module configured to:
receive the generated watchdog refresh request, and
refresh a watchdog based on the watchdog refresh request in response to the received refresh request timing corresponding to the window open time as a result of the determination of the external watchdog module.