# US 11,897,361 B2 · Power calculation apparatus and power calculation method

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 11,897,361 B2
- Document ID: US11897361B2
- Status: Granted
- Kind: B2
- Application number: 17/211,368
- Filed: 2021-03-24
- Published: 2021-09-30
- Granted: 2024-02-13
- Earliest claimed: 2020-03-27
- Assignees: Honda Motor Co., Ltd.
- Applicants: Honda Motor Co., Ltd.
- Inventors: Thomas Stephen Pontefract; Hiroyuki Kanazawa; Jun Kudo; Ayano Otogasako; Takayuki Sakurai
- Web page: https://patentgrep.com/patent/US11897361B2

## CPC

- B60L 55/00: Arrangements for supplying energy stored within a vehicle to a power network, i.e. vehicle-to-grid [V2G] arrangements
- B60L 53/18: Cables specially adapted for charging electric vehicles
- B60L 53/63: in response to network capacity
- B60L 53/665: {Methods related to measuring, billing or payment}
- B60L 58/13: Maintaining the SoC within a determined range
- G06Q 10/04: Forecasting or optimisation specially adapted for administrative or management purposes, e.g. linear programming or "cutting stock problem" (market predictions or forecasting for commercial activities G06Q30/0202)
- G06Q 30/06: Buying, selling or leasing transactions
- G06Q 40/04: Trading; Exchange, e.g. stocks, commodities, derivatives or currency exchange
- G06Q 50/06: Energy or water supply
- H02J 3/322: {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}
- H02J 7/82: Control of state of charge [SOC]
- H02J 7/855: {with circuits adapted for supplying loads from the battery}
- H02J 13/1337: {involving the use of Internet protocols}
- B60L 2240/622: by satellite navigation
- Y02E 60/00: Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02P 80/20: using renewable energy
- Y02T 10/70: Energy storage systems for electromobility, e.g. batteries
- Y02T 10/7072: Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
- Y02T 90/12: Electric charging stations
- Y02T 90/14: Plug-in electric vehicles
- Y02T 90/16: Information or communication technologies improving the operation of electric vehicles
- Y04S 10/126: the energy generation units being or involving electric vehicles [EV] or hybrid vehicles [HEV], i.e. power aggregation of EV or HEV, vehicle to grid arrangements [V2G]
- B60L: PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES (arrangements or mounting of electrical propulsion units or of plural diverse prime-movers for mutual or common propulsion in vehicles B60K1/00, B60K6/20; arrangements or mounting of electrical gearing in vehicles B60K17/12, B60K17/14; preventing wheel slip by reducing power in rail vehicles B61C15/08; dynamo-electric machines H02K; control or regulation of electric motors H02P); SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES (electric coupling devices combined with mechanical couplings of vehicles B60D1/64; electric heating for vehicles B60H1/00); ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL (control or regulation of electric motors H02P); MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- G06Q: INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y04S: SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS

## Abstract

A power calculation apparatus calculates an amount of power suppliable and demandable between a battery and a power grid. The power calculation apparatus includes a microprocessor and a memory connected to the microprocessor. The microprocessor is configured to perform: predicting the amount of power suppliable and demandable between the battery and the power grid at a predetermined point in time to calculate a prediction value of the amount of power suppliable and demandable; and switching a calculation logic to be applied to a calculation of the prediction value, based on a length of duration from a present point in time to the predetermined point in time.

## Claims

### Claim 1

A power calculation apparatus calculating an amount of power suppliable and demandable between a battery and a power grid, the power calculation apparatus comprising
a microprocessor and a memory connected to the microprocessor, wherein the microprocessor is configured to perform:
acquiring statistical data regarding an amount of power suppliable to the power grid in past;
predicting the amount of power suppliable and demandable between the battery and the power grid at a predetermined point in time to calculate a prediction value of the amount of power suppliable and demandable; and
switching calculation logic to be applied to a calculation of the prediction value, based on a length of duration from a present point in time to the predetermined point in time, wherein
the microprocessor is configured to perform
the predicting including predicting, based on state information data indicating at least any of a connection state of the battery, an internal state of the battery, and an external environment state affecting the internal state of the battery, and the statistical data, the amount of power suppliable to the power grid at the predetermined point in time,
the calculation logic includes first calculation logic in which the state information data of the battery is used, second calculation logic in which both the state information data and the statistical data are used, and third calculation logic in which the statistical data is used, and
the switching including applying the first calculation logic to the calculation of the prediction value when the predetermined point in time is included in a first period from the present point in time to a first point in time, applying the second calculation logic to the calculation of the prediction value when the predetermined point in time is included in a second period from the first point in time to a second point in time later than the first point, applying the third calculation logic to the calculation of the prediction value when the predetermined point in time is included in a third period later than the second point in time, and when applying the second calculation logic to the calculation of the prediction value, increasing a weight of the statistical data to the state information data for use in the calculation of the prediction value as the duration from the present point in time to the predetermined point in time is longer.

### Claim 2 (depends on 1)

The power calculation apparatus according to claim 1, wherein
in the first calculation logic, any of a remaining capacity of the battery at the present point in time, a time zone at the present point in time, a day of a week at the present point in time, and weather at the predetermined point in time predicted at the present point in time are used.

### Claim 3 (depends on 2)

The power calculation apparatus according to claim 2, wherein
the microprocessor is configured to perform
the predicting including using, when a remaining storage capacity of the battery at the present pot in time is used as the state information in the first calculation logic and the second calculation logic, a value obtained by subtracting a predetermined capacity from a remaining storage capacity of an on-vehicle battery as the state information if the battery is the on-vehicle battery.

### Claim 4 (depends on 1)

The power calculation apparatus according to claim 1, wherein
in the second calculation logic and third calculation logic the statistical data over a predetermined period of the amount of power suppliable to the power grid in the past, or the statistical data of the amount of power suppliable to the power grid at a past point in time identical in year, month, or time to the predetermined point in time is used.

### Claim 5 (depends on 1)

The power calculation apparatus according to claim 1, wherein
the microprocessor is configured to further perform
detecting an amount of power supplied from the battery to the power grid to obtain a detection value of the amount of power supplied from the battery to the power grid, and
the switching including changing a length of the first period or a content of the state information data in accordance with a level of a difference between the prediction value of the amount of power suppliable to the power grid at the predetermined point in time and the detection value at the predetermined point in time.

### Claim 6 (depends on 1)

The power calculation apparatus according to claim 1, wherein
the microprocessor is configured to perform
the predicting including multiplying a larger correction coefficient as a length of weekends included between the present point in time and the predetermined point in time is longer, to correct the prediction value.

### Claim 7 (depends on 1)

The power calculation apparatus according to claim 1, wherein
the microprocessor is configured to further perform
when the battery is a battery on a vehicle, acquiring action plan information indicating a travel route of the vehicle from the present point in time to the predetermined point in time,
the internal state of the battery indicated by the state information includes a remaining capacity of the battery, and
the microprocessor is configured to perform
the predicting including predicting, when the first calculation logic is applied, the remaining capacity of the battery at the predetermined point in time from the remaining capacity of the battery at the present point in time indicated by the state information data, based on a discharge characteristic of the battery and a travel distance of the vehicle from the present point in time to the predetermined point in time obtained from the travel route indicated by the action plan information.

### Claim 8 (depends on 7)

The power calculation apparatus according to claim 7, wherein
a memory stores position information of a connection apparatus connected to the battery and supplying the power supplied form the battery to the power grid,
the microprocessor is configured to further perform
specifying the battery mounted on the vehicle whose position at the predetermined point in time is within a predetermined distance from a position of the connection apparatus as the battery in connection with the power grid at the predetermined point in time based on the position information of the connection apparatus stored in the memory and the action plan information, and
the microprocessor is configured to perform
the predicting including predicting the amount of power suppliable at the predetermined point in time from the battery to the power grid.

### Claim 9

A power calculation apparatus calculating an amount of power suppliable and demandable between a battery and a power grid, the power calculation apparatus comprising
a microprocessor and a memory connected to the microprocessor, wherein the microprocessor is configured to function as:
a statistical-data acquisition unit configured to acquire statistical data regarding an amount of power suppliable to the power grid in past;
a power prediction unit configured to predict the amount of power suppliable and demandable between the battery and the power grid at a predetermined point in time to calculate a prediction value of the amount of power suppliable and demandable; and
a logic switching unit configured to switch calculation logic to be applied to a calculation of the prediction value by the power prediction unit, based on a length of duration from a present point in time to the predetermined point in time, wherein
the power prediction unit predicts, based on state information data indicating at least any of a connection state of the battery, an internal state of the battery, and an external environment state affecting the internal state of the battery, and the statistical data, the amount of power suppliable to the power grid at the predetermined point in time,
the calculation logic includes first calculation logic in which the state information data of the battery is used, second calculation logic in which both the state information data and the statistical data are used, and third calculation logic in which the statistical data is used, and
the logic switching unit is configured to apply the first calculation logic to the calculation of the prediction value when the predetermined point in time is included in a first period from the present point in time to a first point in time, apply the second calculation logic to the calculation of the prediction value when the predetermined point in time is included in a second period from the first point in time to a second point later than the first point in time, apply the third calculation logic to the calculation of the prediction value when the predetermined point in time is included in a third period later than the second point in time, and when applying the second calculation logic to the calculation of the prediction value, increase a weight of the statistical data to the state information data for use in the calculation of the prediction value as the duration from the present point in time to the predetermined point in time is longer.

### Claim 10 (depends on 9)

The power calculation apparatus according to claim 9, wherein
in the first calculation logic, any of a remaining capacity of the battery at the present point in time, a time zone at the present point in time, a day of a week at the present point in time, and weather at the predetermined point in time predicted at the present point in time are used.

### Claim 11 (depends on 10)

The power calculation apparatus according to claim 10, wherein
the power prediction unit uses, when a remaining storage capacity of the battery at the present point in time is used as the state information in the first calculation logic and the second calculation logic, a value obtained by subtracting a predetermined capacity from a remaining storage capacity of an on-vehicle battery as the state information if the battery is the on-vehicle battery.

### Claim 12 (depends on 9)

The power calculation apparatus according to claim 9, wherein
in the second calculation logic and third calculation logic the statistical data over a predetermined period of the amount of power suppliable to the power grid in the past, or the statistical data of the amount of power suppliable to the power grid at a past point in time identical in year, month, or time to the predetermined point in time is used.

### Claim 13 (depends on 9)

The power calculation apparatus according to claim 9, wherein
the microprocessor is configured to further perform
a power-amount detection unit configured to detect an amount of power supplied from the battery to the power grid to obtain a detection value of the amount of power supplied from the battery to the power grid, wherein
the logic switching unit changes a length of the first period or a content of the state information data in accordance with a level of a difference between the prediction value of the amount of power suppliable to the power grid at the predetermined point in time calculated by the power prediction unit and the detection value detected by the power-amount detection unit.

### Claim 14 (depends on 9)

The power calculation apparatus according to claim 9, wherein
the power prediction unit multiplies a larger correction coefficient as a length of weekends included between the present point in time and the predetermined point in time is longer, to correct the prediction value.

### Claim 15

A power calculation method calculating an amount of power suppliable and demandable between a battery and a power grid, the power calculation method comprising:
acquiring statistical data regarding an amount of power suppliable to the power grid in past;
predicting the amount of power suppliable and demandable between the battery and the power grid at a predetermined point in time to calculate a prediction value of the amount of power suppliable and demandable; and
switching calculation logic to be applied to a calculation of the prediction value, based on a length of duration from a present point in time to the predetermined point in time, wherein
the predicting includes predicting, based on state information data indicating at least any of a connection state of the battery, an internal state of the battery, and an external environment state affecting the internal state of the battery, and the statistical data, the amount of power suppliable to the power grid at the predetermined point in time,
the calculation logic includes first calculation logic in which the state information data of the battery is used, second calculation logic in which both the state information data and the statistical data are used, and third calculation logic in which the statistical data is used, and
the switching includes applying the first calculation logic to the calculation of the prediction value when the predetermined point in time is included in a first period from the present point in time to a first point in time, applying the second calculation logic to the calculation of the prediction value when the predetermined point in time is included in a second period from the first point in time to a second point later than the first point in time, applying the third calculation logic to the calculation of the prediction value when the predetermined point in time is included in a third period later than the second point in time, and when applying the second calculation logic to the calculation of the prediction value, increasing a weight of the statistical data to the state information data for use in the calculation of the prediction value as the duration from the present point in time to the predetermined point in time is longer.