Power feeding system

Patent metadata

Field	Value
Publication number	US-2022158473-A1
Application number	US-202117455382-A
Country	US
Kind code	A1
Filing date	Nov 17, 2021
Priority date	Nov 18, 2020
Publication date	May 19, 2022
Grant date	—

Abstract

A power feeding system of the present disclosure includes a control unit. In a case where a magnitude of supply destination power is smaller than an upper limit value of the power supply capability of the power source, the control unit controls the charge/discharge control circuit so as to meet the supply destination power based on power output from the power source, and to charge the storage battery with power which is a difference obtained by subtracting the supply destination power from the upper limit value of the power supply capability of the power source. In a case where the magnitude of the supply destination power is more than or equal to the upper limit value of the power supply capability of the power source, the control unit controls the charge/discharge control circuit so as to meet the supply destination power by both the power source and the storage battery.

First claim

1 . A power feeding system comprising:
a storage battery configured to be rechargeable and dischargeable, and to output power at a storage battery output voltage; a charge/discharge control circuit configured to control charging/discharging power to/from the storage battery; a power source at least having a power supply capability; and a control unit configured to control an operation of the charge/discharge control circuit, wherein in a case where a magnitude of supply destination power which is consumption power at a power supply destination to be supplied with power by the power source is lower than an upper limit value of the power supply capability of the power source, the control unit controls the charge/discharge control circuit so as to meet the supply destination power based on power output from the power source and to charge the storage battery with power which is a difference obtained by subtracting the supply destination power from the upper limit value of the power supply capability of the power source, and in a case where the magnitude of the supply destination power is more than or equal to the upper limit value of the power supply capability of the power source, the control unit controls the charge/discharge control circuit so as to meet the supply destination power by both the power source and the storage battery.

2 . The power feeding system according to claim 1 , wherein the control unit controls the charge/discharge control circuit so as to change the power supply capability of the power source to be allocated to charging of the storage battery based on a state of charge of the storage battery and the magnitude of the supply destination power.

3 . The power feeding system according to claim 2 , wherein the control unit controls the charge/discharge control circuit so as to further change the power supply capability of the power source to be allocated to charging of the storage battery based on an environmental temperature at a place where the storage battery is installed.

4 . The power feeding system according to claim 1 , wherein in a case where a forced charging instruction is provided from a user, the control unit controls the charge/discharge control circuit so as to perform charging until the storage battery reaches a full charge, and provides the user with a charging completion notification in response to completion of charging of the storage battery.

5 . The power feeding system according to claim 1 , wherein the power source includes at least any one of a solar panel, a hybrid vehicle to which fuel that is usable for power generation can be added, a generator, and a secondary battery.

6 . The power feeding system according to claim 1 , further comprising a solar panel configured to supply the supply destination power.

7 . The power feeding system according to claim 1 , wherein
the power source is a secondary battery configured to give priority to power storage capacity performance over the storage battery, and the control unit controls the charge/discharge control circuit so as to change a ratio between a magnitude of power to be taken out of the power source and a magnitude of power to be taken out of the storage battery in accordance with a varying speed of the supply destination power and states of the power source and the storage battery.

Assignees

• Primearth Ev Energy Co Ltd

Inventors

• KOBA Daisuke
• Torii Yuji
• Sakayanagi Yuji
• Matsukawa Yasushi

Classifications

• H02J7/663

  using battery or load disconnect circuits (H02J9/002 takes precedence) · CPC title

• H02J2101/24

  Photovoltaics · CPC title

• H02J3/32 Primary

  using batteries or super capacitors with converting means · CPC title

• H02J3/322 Primary

  the battery being on-board an electric or hybrid vehicle, e.g. vehicle to grid arrangements [V2G], power aggregation, use of the battery for network load balancing, coordinated or cooperative battery charging · CPC title

• Y02T10/7072

  Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors · CPC title