Electric power system

Patent metadata

Field	Value
Publication number	US-12337712-B2
Application number	US-202217572934-A
Country	US
Kind code	B2
Filing date	Jan 11, 2022
Priority date	Jan 29, 2021
Publication date	Jun 24, 2025
Grant date	Jun 24, 2025

Abstract

An electric power system includes a vehicle on which a power storage device is mounted, a charging and discharging system that exchanges electric power between the vehicle and a facility external to the vehicle, a photovoltaic power generation device that supplies electric power generated using sunlight to the charging and discharging system, and a controller that stops the charging and discharging system based on any of a first condition, a second condition, and a third condition. The first condition is related to the amount of electric power exchanged between the power storage device and the facility, the second condition is related to a time when the power generated by the photovoltaic device is less than a threshold, and the third condition is related to an electricity rate.

First claim

What is claimed is:

1. An electric power system comprising:
a vehicle on which a power storage device is mounted;
a charging and discharging system that supplies and receives electric power between the vehicle and a facility external to the vehicle;
a photovoltaic power generation device that supplies electric power generated using sunlight to the charging and discharging system;
a notification device that notifies a user of predetermined information;
and a controller that notifies inquiry information using the notification device when a first condition and a third condition are satisfied, the inquiry information inquiring whether stop of the charging and discharging system is allowed, wherein
the first condition includes a condition that magnitude of the electric power supplied and received between the power storage device and the facility is smaller than a threshold,
a second condition includes a condition that a present time is a time within a time period in which an amount of electric power generated by the photovoltaic power generation device is smaller than a threshold,
and the third condition includes a condition that (i) the present time is a time within a time period in which an electricity rate lower than an electricity rate of any other time period of a day is set, and (ii) an amount of electric power stored in the power storage device is within a prescribed range corresponding to a fully charged state.

2. The electric power system according to claim 1 , wherein the controller activates the charging and discharging system when the charging and discharging system is stopped and when a state in which at least any of the second condition and the third condition is satisfied changes to a state in which the at least any of the second condition and the third condition is not satisfied.

3. An electric power system comprising:
a vehicle on which a power storage device is mounted;
a charging and discharging system that supplies and receives electric power between the vehicle and a facility external to the vehicle;
a photovoltaic power generation device that supplies electric power generated using sunlight to the charging and discharging system; and
a controller that controls the charging and discharging system, wherein
the controller stops the charging and discharging system when all conditions of a first condition, a second condition, and a third condition are satisfied,
the first condition includes a condition that magnitude of the electric power supplied and received between the power storage device and the facility is smaller than a threshold,
the second condition includes a condition that a present time is a time within a time period in which an amount of electric power generated by the photovoltaic power generation device is smaller than a threshold, and
the third condition includes a condition that (i) the present time is a time within a time period in which an electricity rate lower than an electricity rate of any other time period of a day is set, and (ii) an amount of electric power stored in the power storage device is within a prescribed range corresponding to a fully charged state.

4. The electric power system according to claim 3 , wherein the controller activates the charging and discharging system when the charging and discharging system is stopped and when a state in which at least any of the second condition and the third condition is satisfied changes to a state in which the at least any of the second condition and the third condition is not satisfied.

Assignees

• Toyota Motor Co Ltd

Inventors

• Hirose Haruka

Classifications

• H02J3/381

  Dispersed generators · CPC title

• B60L2240/80

  Time limits · CPC title

• Y02T10/70

  Energy storage systems for electromobility, e.g. batteries · CPC title

• Y02T90/12

  Electric charging stations · CPC title

• Y02T10/7072

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