US 10,589,638 B2Granted

Electric vehicle charging device and method for charging electric vehicle

AssigneeEaton Intelligent Power Limited

InventorsChinmaya Baburao Patil, Yigang Wang, Ronald L. Thompson, Jose Antonio Trujillo

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Abstract

An electric vehicle charging device includes a processing unit having a memory with a routine stored therein which, when executed by the processing unit causes the processing unit to control circuitry to prevent the electric vehicle charging device from charging an electric vehicle for a random delay period and to allow the electric vehicle charging device to charge the electric vehicle starting when the random delay period ends, wherein the random delay period starts at a predetermined start time and lasts a random delay length of time. The random delay reduces the peak load on a transformer that the electric vehicle charging device and other electric vehicle charging devices receive power from.

Claims20

Dependent claims

An electric vehicle charging device for use in charging a corresponding electric vehicle electrically connected to the electric vehicle charging device, the electric vehicle charging device comprising:

control circuitry structured to selectively allow the electric vehicle charging device to charge the electric vehicle;
a communication interface structured to provide communication with other electric vehicle charging devices;
and
a processing unit having a memory with a routine stored therein which, when executed by the processing unit causes the processing unit to:
initiate a load shedding process having an associated load shedding power level and a load shedding period of time;
estimate a charging length of time needed for the electric vehicle to reach a fully charged state;
control the communication interface to transmit the charging length of time to one or more other electric vehicle charging devices associated with other electric vehicles;
receive charging length of times associated with other electric vehicles via the communication interface;
determine charging priority ranks of the electric vehicle and the other electric vehicles based on the charging lengths of time associated with the electric vehicle and the other electric vehicles;
determine a threshold rank based on the load shedding power level;
and
control the control circuitry to prevent the electric vehicle charging device from charging the electric vehicle for the load shedding period of time if the charging priority rank of the electric vehicle is equal to or less than the threshold rank and to allow the electric vehicle charging device to charge the electric vehicle for the load shedding period of time if the charging priority rank of the electric vehicle is greater than the threshold rank.

9 more elements

A method of charging an electric vehicle with an electric vehicle charging device, the method comprising:

initiate a load shedding process having an associated load shedding power level and a load shedding period of time;
estimating a charging length of time associated needed for the electric vehicle to reach a fully charged state;
transmitting the charging length of time to one or more other electric vehicle charging devices associated with other electric vehicles;
receiving charging length of times associated with other electric vehicles;
determining charging priority ranks of the electric vehicle and the other electric vehicles based on the charging lengths of time associated with the electric vehicle and the other electric vehicles;
determining a threshold rank based on the load shedding power level;
and
preventing the electric vehicle charging device from charging the electric vehicle for the load shedding period of time if the charging priority rank of the electric vehicle is equal to or less than the threshold rank and allowing the electric vehicle charging device to charge the electric vehicle for the load shedding period of time if the charging priority rank of the electric vehicle is greater than the threshold rank.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/548,213Filed 22 Aug 2019 · division
Priority: 17 Oct 2016
Published: US 2019/0375307 A112 Dec 2019
Granted: 17 Mar 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification28 codes

B60L 53/63
Monitoring or controlling charging stations: in response to network capacity
B60L 53/31
Constructional details of charging stations: charging columns specially adapted for electric vehicles
H02J 3/04
Circuit arrangements for AC mains or AC distribution networks: arrangements for connecting networks of the same frequency but supplied from…
H02J 3/14
Arrangements for adjusting voltage in AC networks by changing a characteristic of the network load: by switching loads on to, or off from, the…

Family

Application15/295,242Parent of this division · filed 17 Oct 2016
US 2019/0375307 A1Pre-grant publication · published 12 Dec 2019
US 10,427,548 B2Parent of this division
US 2018/0105052 A1Published application
US 10,589,638 B2This patent

From the US filing history. Foreign family members aren’t listed.