# US 10,246,083 B2 · Hybrid vehicle

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

- Number: US 10,246,083 B2
- Document ID: US10246083B2
- Status: Granted
- Kind: B2
- Application number: 15/340,178
- Filed: 2016-11-01
- Published: 2017-05-11
- Granted: 2019-04-02
- Earliest claimed: 2015-11-05
- Assignees: Toyota Jidosha Kabushiki Kaisha
- Applicants: Toyota Jidosha Kabushiki Kaisha
- Inventors: Shinichiro Minegishi
- Web page: https://patentgrep.com/patent/US10246083B2

## CPC

- B60W 20/50: Control strategies for responding to system failures, e.g. for fault diagnosis, failsafe operation or limp mode
- B60K 6/365: with the gears having orbital motion
- B60K 6/445: Differential gearing distribution type
- B60K 6/547: the transmission being a stepped gearing
- B60L 50/16: with provision for separate direct mechanical propulsion
- B60L 50/61: by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
- B60W 20/10: Controlling the power contribution of each of the prime movers to meet required power demand
- B60L 3/0061: {relating to electrical machines}
- B60L 3/12: Recording operating variables {; Monitoring of operating variables}
- B60L 2210/30: AC to DC converters
- B60L 2240/421: Speed
- B60L 2240/441: Speed
- B60L 2260/44: by parameter estimation
- B60W 2510/0638: Engine speed
- B60W 2510/081: Speed
- B60W 2510/1005: Transmission ratio engaged
- B60W 2710/083: Torque
- B60Y 2200/92: Hybrid vehicles
- B60Y 2306/13: Failsafe arrangements
- B60Y 2400/112: Batteries
- B60Y 2400/61: Arrangements of controllers for electric machines, e.g. inverters
- B60Y 2400/73: Planetary gearings
- Y02T 10/62: Hybrid vehicles
- Y02T 10/64: Electric machine technologies in electromobility
- 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
- Y10S 903/906: Motor or generator
- Y10S 903/911: with two or more gear sets
- Y10S 903/919: Stepped shift
- 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
- B60Y: INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

## Abstract

Using an estimated electric angle calculated by an electric angle estimation unit, a PWM control unit controls an output of a motor generator (MG2) having an abnormality of a resolver. The electric angle estimation unit converts, into an estimated rotation angle speed, a rotation speed of MG2 estimated from rotation speeds of an engine and a normal motor generator mechanically coupled to MG2. The estimated electric angle is calculated by correcting a sum of the estimated electric angle in a previous control period and an estimated electric angle change amount between the previous control period and a present control period obtained from the estimated rotation angle speed, with a calculated and estimated electric angle error. The electric angle error is estimated from a control command for an inverter and an actual current value detected by a current sensor.

## Claims

### Claim 1

A hybrid vehicle comprising:
an engine;
a first motor generator and a second motor generator each including a rotor provided with a permanent magnet;
an output shaft mechanically connected to the rotor of the second motor generator and drive wheels;
a planetary gear device mechanically coupling a crankshaft of the engine, the rotor of the first motor generator and the output shaft;
first and second rotation angle sensors provided to the first motor generator and the second motor generator, respectively;
first and second current sensors provided to the first motor generator and the second motor generator, respectively;
a rotation detection sensor provided to the crankshaft;
first and second inverters that control an output of the first motor generator and an output of the second motor generator, respectively;
a power storage that transmits and receives electric power to and from the first motor generator and the second motor generator through the first and second inverters; and
an electronic control unit programmed to, in a running mode in which an abnormality occurs in one rotation angle sensor of the first and second rotation angle sensors and an other rotation angle sensor of the first and second rotation angle sensors is normal during running of the vehicle, control an output of one motor generator of the first motor generator and the second motor generator, wherein the one motor generator corresponds to the one rotation angle sensor,
the electronic control unit being programmed to, during the running of the vehicle:
(i) periodically calculate an estimated rotation angle speed of the one motor generator based on a gear ratio in the planetary gear device, a detected value of the rotation detection sensor, and a detected value of the other rotation angle sensor of the first and second rotation angle sensors;
(ii) periodically calculate an estimated electric angle by integrating an estimated rotation angle change amount calculated from the estimated rotation angle speed; and
(iii) periodically generate a control command for one inverter of the first and second inverters which corresponds to the one motor generator, by use of the estimated electric angle,
the estimated electric angle being calculated in each period by correcting a sum of the estimated electric angle in a previous period and the estimated rotation angle change amount between the previous period and a present period, with an electric angle error calculated and estimated from the control command for the one inverter and a current value detected by one current sensor of the first and second current sensors which is provided to the one motor generator.

### Claim 2 (depends on 1)

The hybrid vehicle according to claim 1, wherein
during the running mode of the vehicle, in a period in which an absolute value of the electric angle error is greater than a prescribed value since a start of output control over the one motor generator, the electronic control unit is configured to set an upper limit value of output torque of the one motor generator to be smaller than the upper limit value after the absolute value of the electric angle error becomes smaller than the prescribed value.

### Claim 3 (depends on 2)

The hybrid vehicle according to claim 2, wherein
the control device includes a plurality of processors,
a first processor of the plurality of processors receives outputs of the rotation detection sensor and the other rotation angle sensor, and calculates a rotation speed of the engine and a rotation speed an other motor generator of the first motor generator and the second motor generator, the other motor generator corresponding to the other rotation angle sensor, and
the estimated rotation angle speed of the one motor generator is calculated in any one of the plurality of processors by using the gear ratio as well as the rotation speed of the engine and the rotation speed of the other motor generator calculated by the first processor.

### Claim 4 (depends on 1)

The hybrid vehicle according to claim 1, wherein
the control device includes a plurality of processors,
a first processor of the plurality of processors receives outputs of the rotation detection sensor and the other rotation angle sensor, and calculates a rotation speed of the engine and a rotation speed of an other motor generator of the first motor generator and the second motor generator, the other motor generator corresponding to the other rotation angle sensor, and
the estimated rotation angle speed of the one motor generator is calculated in any one of the plurality of processors by using the gear ratio as well as the rotation speed of the engine and the rotation speed of the other motor generator calculated by the first processor.