US 10,471,846 B2Granted

Methods and systems for supplying electricity to multiple loads with current measurements

AssigneePismo Labs Technology Limited

InventorsAlex Wing Hong Chan, Ming Pui Chong, King Shan Lam, Chi Leong Kwok

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Abstract

To prevent theft and/or leakage of electricity and to distribute electricity for recharging electric vehicles, the present invention discloses methods and systems for enabling and disabling a plurality of relays at a system. The system comprises a power supply, at least one ammeter, a power supply enabler and at least one power controller. The required steps include measuring current drawn by the plurality of loads by one or more ammeters. The power controller independently enables or disables each of the plurality of relays according to the instructions received. The power supply enabler enables or disables power supply to the system substantially based on the amount of current being drawn by the system.

Claims20

Dependent claims

A method for scheduling electricity supply to a plurality of electric vehicle (EV) chargers at a power supply enabler (PSE), wherein each of the plurality of EV chargers is connected with one power controller respectively, the method comprising:

a) receiving from a plurality of power controllers, measurements of amount of current received by a plurality of loads respectively;
wherein the power controllers are configured to transmit and receive data through mobile communication technology;
wherein the measurements are received through mobile communication technology;
b) determining a difference between a total amount of current supplied and a total amount of current received;
wherein the total amount of current received is based on the measurements from the plurality of power controllers received in step (a);
wherein the total amount of current supplied is retrieved through a current measurement device coupled to the power supply enabler;
c) wherein when the difference is above a first threshold:
i. selecting one or more power controllers to be disabled;
ii. sending a disabling message to each of the one or more power controllers to be disabled, wherein the disabling messages are for instructing the one or more power controllers to be disabled to disable their respective relays;
wherein the disabling messages are sent wirelessly using mobile communication technology;
d) wherein when the difference is below the first threshold:
iii. selecting one or more power controllers to be enabled;
iv. enabling one or more power controllers to be enabled;
v. sending an enabling message to each of the one or more power controllers to be enabled, wherein the enabling messages are for instructing the one or more power controllers to be enabled to enable their respective relays;
wherein the enabling messages are sent wirelessly using mobile communication technology.

12 more elements

A system for scheduling electricity supply to a plurality of electric vehicle (EV) chargers at a power supply enabler (PSE), wherein each of the plurality of EV chargers is connected with one power controller respectively, comprising:

one or more storage mediums for storing program instructions to be executed;
one or more network interfaces for sending instructions through wireless communications network;
one or more processing units for executing program instructions;
and a method for scheduling the electricity supply, the method comprising:
a) receiving measurements from a plurality of power controllers of an amount of current received by a plurality of loads respectively;
wherein the power controllers are configured to transmit and receive data through mobile communication technology;
wherein the measurements are received through mobile communication technology;
b) determining a difference between a total amount of current supplied and a total amount of current received;
wherein the total amount of current received is based on the measurements from the plurality of power controllers received in step (a);
wherein the total amount of current supplied is retrieved through a current measurement device coupled to the power supply enabler:
c) wherein when the difference is above a first threshold:
i. selecting one or more power controllers to be disabled;
ii. sending a disabling message to each of the one or more power controllers to be disabled, wherein the disabling messages are for instructing the one or more power controllers to be disabled to disable their respective relays;
wherein the disabling messages are sent wirelessly using mobile communication technology;
d) wherein when the difference is below the first threshold:
iii. selecting one or more power controllers to be enabled;
iv. enabling one or more power controllers to be enabled;
v. sending an enabling message to each of the one or more power controllers to be enabled, wherein the enabling messages are for instructing the one or more power controllers to be enabled to enable their respective relays;
wherein the enabling messages are sent wirelessly using mobile communication technology.

16 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/545,723Filed 23 Aug 2016
Published: US 2018/0111493 A126 Apr 2018
Granted: 12 Nov 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification33 codes

B60L 53/31
Constructional details of charging stations: charging columns specially adapted for electric vehicles
B60L 53/60
Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of…:…
B60L 53/63
Monitoring or controlling charging stations: in response to network capacity
B60L 53/665
Data transfer between charging stations and vehicles: methods related to measuring, billing or payment