US 12,331,908 B2
Emergency lighting device having battery level indicating function
Fuxing Lu, Fujian (CN); and Chun Ming Liu, Fujian (CN)
Assigned to Xiamen PVTECH Co., Ltd., Fujian (CN)
Filed by Xiamen PVTECH Co., Ltd., Fujian (CN)
Filed on Aug. 8, 2023, as Appl. No. 18/231,784.
Claims priority of application No. 202310214575.2 (CN), filed on Mar. 8, 2023.
Prior Publication US 2024/0302009 A1, Sep. 12, 2024
Int. Cl. F21S 9/02 (2006.01); H02J 7/00 (2006.01); H02J 9/06 (2006.01)
CPC F21S 9/022 (2013.01) [H02J 7/0048 (2020.01); H02J 9/065 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An emergency lighting device having battery level indicating function, comprising:
a rechargeable battery module;
a charging control module connected to the rechargeable battery module, and having a first monitoring point and a second monitoring point, wherein a first monitoring resistor is disposed between the first monitoring point and a positive electrode of the rechargeable battery module, and a second monitoring resistor is disposed between the first monitoring point and the second monitoring point;
a processing module connected to the charging control module, and having a first monitoring pin and a second monitoring pin configured to detect a first voltage of the first monitoring point and a second voltage of the second monitoring point respectively to perform a battery level calculating mode in order to generate an estimated battery level of the rechargeable battery module; and
an indicator module connected to the processing module;
wherein the processing module is configured to control the indicator module according to the estimated battery level, whereby the indicator module performs a light-emitting mode corresponding to the estimated battery level.