US 12,243,996 B2
Power management device and power storage system
Katsuo Naoi, Tokyo (JP); Takuma Mitsunaga, Tokyo (JP); Shingo Suzuki, Tokyo (JP); Masao Ichi, Tokyo (JP); and Hisakazu Uto, Tokyo (JP)
Assigned to TDK CORPORATION, Tokyo (JP)
Appl. No. 17/640,471
Filed by TDK CORPORATION, Tokyo (JP)
PCT Filed Mar. 23, 2020, PCT No. PCT/JP2020/012791
§ 371(c)(1), (2) Date Mar. 4, 2022,
PCT Pub. No. WO2021/191987, PCT Pub. Date Sep. 30, 2021.
Prior Publication US 2023/0006282 A1, Jan. 5, 2023
Int. Cl. H01M 10/6563 (2014.01); H01M 10/48 (2006.01); H01M 10/635 (2014.01); H02J 7/00 (2006.01)
CPC H01M 10/6563 (2015.04) [H01M 10/482 (2013.01); H01M 10/486 (2013.01); H01M 10/635 (2015.04); H02J 7/005 (2020.01); H02J 7/00712 (2020.01)] 5 Claims
OG exemplary drawing
 
1. A power management device for controlling a temperature inside a housing in a power storage system, the power storage system including a power storage device including a storage battery and the housing for housing the power storage device, the power management device comprising:
an acquisition unit configured to acquire status information indicating a status of the power storage system;
a calculation unit configured to calculate a target temperature in the housing based on an allowable capacity deterioration rate of the storage battery; and
an air volume control unit configured to control air volumes of fans provided in the housing based on the status information and the target temperature,
wherein the acquisition unit includes:
a first acquisition unit configured to acquire an ambient temperature of the housing, which is a temperature detected by a temperature sensor provided outside the housing, as the status information; and
a second acquisition unit configured to acquire a calorific value, which is an amount of heat generated in the housing, as the status information,
wherein the air volume control unit calculates a required air volume, which is required to set the temperature inside the housing to the target temperature, based on the calorific value, the ambient temperature, and the target temperature, and operates a required number of fans required to obtain the required air volume, and
wherein the air volume control unit operates all the fans when the temperature inside the housing is higher than the target temperature.