# US 2019/0168737 A1 · Control device for hybrid vehicle

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- Number: US 2019/0168737 A1
- Document ID: US20190168737A1
- Status: Published application
- Kind: A1
- Application number: 16/116,345
- Filed: 2018-08-29
- Published: 2019-06-06
- Earliest claimed: 2017-12-05
- Assignees: Toyota Jidosha Kabushiki Kaisha
- Applicants: Toyota Jidosha Kabushiki Kaisha
- Inventors: Tomoya TAKAHASHI; Mitsuhiro TABATA
- Web page: https://patentgrep.com/patent/US20190168737A1

## CPC

- B60W 20/13: in order to stay within battery power input or output limits; in order to prevent overcharging or battery depletion
- B60K 6/445: Differential gearing distribution type
- B60L 50/15: with additional electric power supply (with capacitors charged by engine-driven generators B60L50/40; with batteries charged by engine-driven generators B60L50/61)
- B60L 50/16: with provision for separate direct mechanical propulsion
- B60L 53/00: Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L 58/12: responding to state of charge [SoC]
- B60W 10/06: including control of combustion engines
- B60W 10/08: including control of electric propulsion units, e.g. motors or generators
- B60W 10/26: for electrical energy, e.g. batteries or capacitors
- B60W 20/12: using control strategies taking into account route information {(estimation or calculation of non-directly measurable driving parameters B60W40/00)}
- B60W 50/0097: {Predicting future conditions}
- B60K 6/26: characterised by the motors or the generators
- B60K 6/28: characterised by the electric energy storing means, e.g. batteries or capacitors
- B60L 2240/60: Navigation input
- B60W 20/11: using model predictive control [MPC] strategies, i.e. control methods based on models predicting performance {(utilising navigation and traffic information in the control strategy B60W20/12)}
- B60W 20/20: Control strategies involving selection of hybrid configuration, e.g. selection between series or parallel configuration
- B60W 2555/20: Ambient conditions, e.g. wind or rain
- B60W 2556/10: Historical data
- B60W 2556/45: External transmission of data to or from the vehicle
- B60W 2556/50: of positioning data, e.g. GPS [Global Positioning System] data
- B60W 2556/55: using telemetry
- B60W 2710/244: Charge state
- Y02T 10/62: Hybrid vehicles
- 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 10/72: Electric energy management in electromobility
- Y02T 90/14: Plug-in electric vehicles
- Y02T 90/16: Information or communication technologies improving the operation of electric vehicles
- B60W: CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- 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
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

A control device for a hybrid vehicle, the hybrid vehicle including an internal combustion engine, an electric motor, and a battery, includes an electronic control unit configured to: i) set a target SOC which is a target value of an SOC of the battery when the hybrid vehicle arrives at a prescribed charging base; ii) when the hybrid vehicle is traveling outside the charging base, control output of the internal combustion engine and the electric motor such that the SOC at a time when the vehicle arrives at the charging base is the target SOC; and iii) estimate a charging possibility which is a possibility that the battery is charged with an external power source in the charging base when the hybrid vehicle arrives at the charging base, and set the target SOC lower when the estimated charging possibility is high than when the estimated charging possibility is low.

## Claims

### Claim 1

A control device for a hybrid vehicle, the hybrid vehicle including an internal combustion engine, an electric motor, and a battery connected to the electric motor, the hybrid vehicle being configured to charge the battery with electric power generated with output of the internal combustion engine, the hybrid vehicle being configured to drive the electric motor with the electric power supplied from the battery, the hybrid vehicle being configured to charge the battery with an external power source, the control device comprising an electronic control unit, the electronic control unit being configured to:
i) set a target charging rate, the target charging rate being a target value of a state of charge of the battery when the hybrid vehicle arrives at a prescribed charging base;
ii) when the hybrid vehicle is traveling outside the charging base, control output of the internal combustion engine and the electric motor such that the state of charge at a time when the hybrid vehicle arrives at the charging base is the target charging rate; and
iii) estimate a charging possibility and set the target charging rate lower when the estimated charging possibility is high than when the estimated charging possibility is low, the charging possibility being a possibility that the battery is charged with an external power source in the charging base when the hybrid vehicle arrives at the charging base.

### Claim 2 (depends on 1)

The control device according to claim 1, wherein the charging possibility is estimated based on a charging history which is a history of charging the battery with the external power source when the hybrid vehicle stopped at the charging base in the past.

### Claim 3 (depends on 2)

The control device according to claim 2, wherein:
the charging history includes an external charging frequency that is a frequency of charging the battery with the external power source when the hybrid vehicle stopped at the charging base in the past; and
the electronic control unit is configured to set the target charging rate lower when the external charging frequency is high than when the external charging frequency is low.

### Claim 4 (depends on 3)

The control device according to claim 3, wherein the external charging frequency is a frequency of charging the battery with the external power source while the hybrid vehicle stopped in the base when the state of charge at a time when the hybrid vehicle arrives at the charging base is equal to or less than a predetermined value.

### Claim 5 (depends on 3)

The control device according to claim 3, wherein:
the charging history includes an external charging frequency in each of a plurality of vehicle environment states when the hybrid vehicle stopped in the charging base in the past; and
the electronic control unit is configured to:
i) acquire a vehicle environment state being a vehicle environment state at a present time or a vehicle environment state at a time when the hybrid vehicle is expected to arrive at the charging base; and
ii) set the target charging rate lower when the acquired vehicle environment state is a vehicle environment state in which the external charging frequency is high than when the acquired vehicle environment state is a vehicle environment state in which the external charging frequency is low.

### Claim 6 (depends on 5)

The control device according to claim 5, wherein the vehicle environment states are different at least in one of following categories: (i) a time slot, (ii) a day of the week, (iii) weather, (iv) a driver, and (v) number of occupants.

### Claim 7 (depends on 1)

The control device according to claim 1, wherein the charging possibility is estimated based on weather in a current location or in the charging base, the weather being weather at a present time or weather at a time when the hybrid vehicle is expected to arrive at the charging base.