IP Library Granted Patent US 12703264
Granted Patent B2
US 12703264 · App. 18/630,995 · Granted Aug 11, 2026

Power system for disconnecting from the grid and operating independently

Inventors: Geoffrey David Gaither (Ann Arbor, MI); Jonathan M. Shum (Canton, MI); Allison McGowan (Ann Arbor, CA)
Assignees: TOYOTA MOTOR NORTH AMERICA, INC.; TOYOTA JIDOSHA KABUSHIKI KAISHA
B60L55/00G01R31/086H02H7/26B60L2270/00
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Quick Facts
Patent No.
US 12703264
App. No.
18/630,995
Granted
Aug 11, 2026
Kind
B2
Abstract

An example operation includes one or more of determining an adverse condition will exist on a power grid at a future time, identifying an electric vehicle at a location connected to the power grid and controlling the electric vehicle to store power based on the future time, disconnecting the location from the power grid when the adverse condition occurs, and controlling the electric vehicle to distribute power to one or more devices at the location after disconnecting the location from the power grid.

Claims (80)

1 . A method, comprising:

determining that a power grid will experience an adverse condition at a future time;

identifying that an electric vehicle at a location is connected to the power grid;

controlling the electric vehicle to store energy before the adverse condition occurs;

detecting, using a system clock, that the future time has arrived;

in response to an arrival of the future time, disconnecting the location from the power grid by sending a control signal to a service panel of the location to cause the service panel to disconnect from the power grid; and

controlling the electric vehicle to distribute the energy to a device at the location after the location has disconnected from the power grid.

2 . The method of claim 1 , comprising:

identifying an on-premises energy storage at the location;

determining a priority between the electric vehicle and the on-premises energy storage based on energy storage capacities of the electric vehicle and the on-premises energy storage; and

controlling the on-premises energy storage to store energy differently from the electric vehicle based on the priority.

3 . The method of claim 1 , wherein the disconnecting of the location comprises:

activating a connection between the service panel and the electric vehicle via an electrical switch.

4 . The method of claim 1 , comprising:

determining an expected energy need of the location during the adverse condition, and

wherein the controlling of the electric vehicle to store energy comprises:

controlling a rechargeable battery of the electric vehicle to store the energy based on the expected energy need.

5 . The method of claim 1 , comprising:

identifying a current state of charge of a rechargeable battery of the electric vehicle, and

wherein the controlling of the electric vehicle to store energy comprises:

controlling the electric vehicle to store the energy in the rechargeable battery based on the current state of charge.

6 . The method of claim 1 , comprising:

identifying a distance between the location and a charging point of the electric vehicle, and

wherein the controlling of the electric vehicle to store the energy comprises:

controlling the electric vehicle to store the energy in a rechargeable battery of the electric vehicle based on the distance.

7 . The method of claim 1 , wherein the controlling of the electric vehicle to distribute the energy comprises:

controlling a transfer of energy from the electric vehicle to the device via a bi-directional energy transfer connection between a charging point at the location and the electric vehicle.

8 . An apparatus comprising:

a processor that executes instructions stored in a memory to configure the processor to:

determine that a power grid will experience an adverse condition at a future time;

identify that an electric vehicle at a location is connected to the power grid;

control the electric vehicle to store energy before the adverse condition occurs;

detecting, using a system clock, that the future time has arrived;

in response to an arrival of the future time, disconnect the location from the power grid by a control signal sent to a service panel of the location to cause the service panel to disconnect from the power grid; and

control the electric vehicle to distribute the energy to a device at the location after the location has disconnected from the power grid.

9 . The apparatus of claim 8 , wherein the processor is further configured to:

identify an on-premises energy storage at the location;

determine a priority between the electric vehicle and the on-premises energy storage based on energy storage capacities of the electric vehicle and the on-premises energy storage; and

control the electric vehicle to distribute the energy to a device at the location after the location has disconnected from the power grid.

10 . The apparatus of claim 8 , wherein the processor is configured to:

disconnect activating a connection between the service panel and the electric vehicle via an electrical switch.

11 . The apparatus of claim 8 , wherein the processor is configured to:

determine an expected energy need of the location during the adverse condition, and

wherein, when the processor controls the electric vehicle to store energy, the processor is configured to:

control a rechargeable battery of the electric vehicle to store the energy based on the expected energy need.

12 . The apparatus of claim 8 , wherein the processor is configured to:

identify a current state of charge of a rechargeable battery of the electric vehicle, and

wherein, when the processor controls the electric vehicle to store energy, the processor is configured to:

control the electric vehicle to store the energy in the rechargeable battery based on the current state of charge.

13 . The apparatus of claim 8 , wherein the processor is configured to:

identify a distance between the location and a charging point of the electric vehicle, and

wherein, when the processor controls the electric vehicle to store energy, the processor is configured to:

control the electric vehicle to store the energy in a rechargeable battery of the electric vehicle based on the distance.

14 . The apparatus of claim 8 , wherein the processor is configured to:

control a transfer of energy from the electric vehicle to the device via a bi-directional energy transfer connection between a charging point at the location and the electric vehicle.

15 . A computer-readable medium comprising instructions that, when executed by a processor, cause the processor to perform:

determining that a power grid will experience an adverse condition at a future time;

identifying that an electric vehicle at a location is connected to the power grid;

controlling the electric vehicle to store energy before the adverse condition occurs;

detecting, using a system clock, that the future time has arrived;

in response to an arrival of the future time, disconnecting the location from the power grid by sending a control signal to a service panel of the location to cause the service panel to disconnect from the power grid; and

controlling the electric vehicle to distribute the energy to a device at the location after the location has disconnected from the power grid.

16 . The computer-readable storage medium of claim 15 , wherein the instructions cause the processor to perform:

identifying an on-premises energy storage at the location;

determining a priority between the electric vehicle and the on-premises energy storage based on energy storage capacities of the electric vehicle and the on-premises energy storage; and

controlling the on-premises energy storage to store energy differently from the electric vehicle based on the priority.

17 . The computer-readable storage medium of claim 15 , wherein the disconnecting of the location comprises;

activating a connection between the service panel and the electric vehicle via an electrical switch.

18 . The computer-readable storage medium of claim 15 , wherein the instructions cause the processor to perform:

determining an expected energy need of the location during the adverse condition, and

wherein the controlling of the electric vehicle to store energy comprises:

controlling a rechargeable battery of the electric vehicle to store the energy based on the expected energy need.

19 . The computer-readable storage medium of claim 15 , wherein the instructions cause the processor to perform:

identifying a current state of charge of a rechargeable battery of the electric vehicle, and

wherein the controlling of the electric vehicle to store energy comprises:

controlling the electric vehicle to store the energy in the rechargeable battery based on the current state of charge.

20 . The computer-readable storage medium of claim 15 , wherein the instructions cause the processor to perform;

identifying a distance between the location and a charging point of the electric vehicle, and

wherein the controlling of the electric vehicle to store the energy comprises:

controlling the electric vehicle to store the energy in a rechargeable battery of the electric vehicle based on the distance.