公开(公告)号：US12243996B2

公开(公告)日：2025-03-04

申请号：US17640471

申请日：2020-03-23

Applicant: TDK CORPORATION

Inventor： Katsuo Naoi ,  Takuma Mitsunaga ,  Shingo Suzuki ,  Masao Ichi ,  Hisakazu Uto

IPC: H01M10/6563 ,  H01M10/48 ,  H01M10/635 ,  H02J7/00

Abstract: A power management device is a power management device that controls a temperature inside a housing in a power storage system that includes a power storage device including a storage battery and the housing for housing the power storage device. The power management device includes an acquisition unit that acquires status information indicating a status of the power storage system, a calculation unit that calculates a target temperature in the housing based on an allowable capacity deterioration rate of the storage battery, and an air volume control unit that controls an air volume of a fan provided in the housing based on the status information and the target temperature.

公开(公告)号：US12009669B2

公开(公告)日：2024-06-11

申请号：US17640493

申请日：2020-03-25

Applicant: TDK CORPORATION

Inventor： Takuma Mitsunaga ,  Katsuo Naoi ,  Shingo Suzuki ,  Hisakazu Uto ,  Masao Ichi

IPC: H02J3/46 ,  H02J3/32 ,  H02J3/38 ,  H02J7/35

CPC classification number: H02J3/46 ,  H02J3/32 ,  H02J3/381 ,  H02J7/35 ,  H02J2207/20 ,  H02J2300/20

Abstract: A power feeding system includes a direct current (DC) bus for supplying DC power, a renewable energy power generation device connected to the DC bus, a first converter connected to the DC bus and converting a bus voltage supplied to the DC bus into a load voltage supplied to a load device, a storage battery, a second converter provided between the storage battery and the DC bus and capable of bidirectionally converting the bus voltage and a battery voltage of the storage battery, and a power management device controlling the second converter to charge and discharge the storage battery. The power management device controls the second converter to change the bus voltage based on difference power obtained by subtracting load power supplied to the load device from supply power supplied to the DC bus, the supply power including generated power generated by the renewable energy power generation device.

公开(公告)号：US11764573B2

公开(公告)日：2023-09-19

申请号：US17434270

申请日：2019-02-28

Applicant: TDK Corporation

Inventor： Masao Ichi

IPC: H02J1/10 ,  H02J7/34

CPC classification number: H02J1/10 ,  H02J7/34 ,  H02J2300/22 ,  H02J2300/28

Abstract: A DC power supply system includes: nodes to connect to a DC bus and constitute a DC grid with the bus; a power management apparatus that manages the power demand of the entire grid; and a starter device that makes the nodes start up and connect to the bus one by one in an order in a state where the bus is down to start up the entire grid. The starter device supplies start-up power through a power supply line to start up each node. The starter device diagnoses nodes to be diagnosed selected from among the nodes before supply of the power to determine the abnormality from a response with respect to a diagnostic signal supplied to the nodes through the start-up power supply line. When the node diagnosed is determined to be normal, the starter device supplies the start-up power thereto and connects it to the bus.