US 12,438,205 B2
Battery system with heating element and method of controlling the same
Kumyul Hwang, Yongin-si (KR); Woongbin Kim, Yongin-si (KR); Junseop Kim, Yongin-si (KR); and Yujeong Jeon, Yongin-si (KR)
Assigned to SAMSUNG SDI CO., LTD., Yongin-si (KR)
Filed by SAMSUNG SDI CO., LTD., Yongin-si (KR)
Filed on Dec. 27, 2021, as Appl. No. 17/562,380.
Claims priority of application No. 10-2021-0039695 (KR), filed on Mar. 26, 2021.
Prior Publication US 2022/0311064 A1, Sep. 29, 2022
Int. Cl. H01M 10/44 (2006.01); H01M 10/48 (2006.01); H02J 7/00 (2006.01)
CPC H01M 10/443 (2013.01) [H01M 10/486 (2013.01); H02J 7/00309 (2020.01)] 12 Claims
OG exemplary drawing
 
1. A battery system, comprising:
a battery management module including an external terminal, a battery terminal, a heating terminal, a main switch between the external terminal and the battery terminal, and a heating switch between the external terminal and the heating terminal;
at least one battery module including at least one battery cell connected to the battery terminal, a heating element, and a control switch between the heating element and the heating terminal; and
a controller configured to detect connection with a charger, and to detect a cell temperature of the at least one battery cell, wherein:
when the cell temperature is lower than a first reference value, the controller is to turn off the main switch and turn on the heating switch and the control switch to supply heating power from the charger to the heating element, and
when the cell temperature is higher than a second reference value, the controller is to turn off the heating switch and turn on the main switch to supply charging power from the charger to the at least one battery cell, wherein the controller includes:
a microcontroller mounted on the battery management module and configured to control the main switch and the heating switch; and
at least one analog front end respectively mounted on the at least one battery module and configured to detect the cell temperature, transmit the detected cell temperature to the microcontroller, and output a control signal to the control switch according to control of the microcontroller.