# US 2017/0282897 A1 · Travel driving apparatus of vehicle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0282897 A1 - Document ID: US20170282897A1 - Status: Published application - Kind: A1 - Application number: 15/463,347 - Filed: 2017-03-20 - Published: 2017-10-05 - Earliest claimed: 2016-03-30 - Assignees: Mitsubishi Jidosha Kogyo Kabushiki Kaisha - Applicants: Mitsubishi Jidosha Kogyo Kabushiki Kaisha - Inventors: Ryo SHIMIZU; Norihiko IKOMA; Makoto KAMACHI; Hironori ABE; Naoki MIYAMOTO - Web page: https://patentgrep.com/patent/US20170282897A1 ## CPC - B60W 20/14: in conjunction with braking regeneration - B60K 1/02: comprising more than one electric motor - B60K 6/26: characterised by the motors or the generators - B60K 6/442: Series-parallel switching type - B60K 6/448: Electrical distribution type - B60K 6/52: Driving a plurality of drive axles, e.g. four-wheel drive - B60W 10/06: including control of combustion engines - B60W 10/08: including control of electric propulsion units, e.g. motors or generators - B60W 30/18127: {Regenerative braking} - B60K 1/00: Arrangement or mounting of electrical propulsion units (B60K7/00 takes precedence; arrangement or mounting of plural diverse prime-movers for mutual or common propulsion B60K6/00) - B60K 17/356: having fluid or electric motor, for driving one or more wheels - B60K 2001/001: {one motor mounted on a propulsion axle for rotating right and left wheels of this axle} - B60L 2210/14: Boost converters - B60L 2240/525: Temperature of converter or components thereof - B60L 2260/28: Four wheel or all wheel drive - B60W 2510/087: Temperature - B60W 2710/0644: Engine speed - B60W 2710/083: Torque - B60W 2710/086: Power - B60W 2720/403: between front and rear axle - B60Y 2200/92: Hybrid vehicles - B60Y 2300/18125: Regenerative braking - B60Y 2300/43: Control of engines - B60Y 2300/91: Battery charging - Y02T 10/62: Hybrid vehicles - Y02T 10/70: Energy storage systems for electromobility, e.g. batteries - Y02T 10/72: Electric energy management in electromobility - Y10S 903/906: Motor or generator - Y10S 903/93: Conjoint control of different elements - 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 In a hybrid vehicle including a front motor for driving front wheels, and a step-up converter for stepping up voltage from a battery to supply power to the front motor, in which power regenerated by rotational force of the front wheel during vehicle deceleration is stepped down by a step-up converter and can be supplied to a battery, the hybrid vehicle includes a hybrid control unit which computes maximum input power of the step-up converter and regenerated power of the front motor during vehicle deceleration, and sets a difference obtained by subtracting regenerated power of the front motor from the maximum input power of the step-up converter to the maximum generated power of the generator. ## Claims ### Claim 1 A travel driving apparatus of a vehicle, comprising: a transformer of which maximum input/output power is changed based on a temperature condition; a first electrical motor for regenerating power by rotational force of either one of a front wheel and a rear wheel of the vehicle, and causing the power to be transformed by the transformer and to be supplied to a battery; a generator for generating power by being driven by an internal combustion engine and causing the power to be transformed by the transformer and to be supplied to the battery; a first calculating section for calculating regenerated power of the first electrical motor such that regenerative braking torque not less than a predetermined level is exerted at the either one of the wheels of the vehicle; and a second calculating section for calculating generated power of the generator, wherein the second calculating section sets a difference obtained by subtracting the regenerated power calculated at the first calculating section from the maximum input/output power of the transformer to maximum generated power of the generator. ### Claim 2 (depends on 1) The travel driving apparatus of a vehicle according to claim 1, further comprising: a setting section for setting a target rotational speed of the internal combustion engine; and a detecting section for detecting actual rotational speed of the internal combustion engine, wherein the second calculating section calculates the generated power such that the generated power is not more than the maximum generated power based on deviation between the target rotational speed and the actual rotational speed. ### Claim 3 (depends on 2) The travel driving apparatus of a vehicle according to claim 2, wherein the second calculating section performs calculation such that the generated power decreases as the deviation between the target rotational speed and the actual rotational speed increases. ### Claim 4 (depends on 1) The travel driving apparatus of a vehicle according to claim 1, further comprising: a second electrical motor for regenerating power by rotational force of the other one of the front wheel and the rear wheel of the vehicle, and supplying the power to a battery not via the transformer; and a computing section for computing a distribution ratio between regenerative torque of the first electrical motor and regenerative torque of the second electrical motor, wherein the computing section corrects regenerative torques of the first electrical motor and the second electrical motor based on temperature of the step-up converter so that regenerative braking torque not less than a predetermined level is generated at the first electrical motor and the second electrical motor. ### Claim 5 (depends on 2) The travel driving apparatus of a vehicle according to claim 2, further comprising: a second electrical motor for regenerating power by rotational force of the other one of the front wheel and the rear wheel of the vehicle, and supplying the power to a battery not via the transformer; and a computing section for computing a distribution ratio between regenerative torque of the first electrical motor and regenerative torque of the second electrical motor, wherein the computing section corrects regenerative torques of the first electrical motor and the second electrical motor based on temperature of the step-up converter so that regenerative braking torque not less than a predetermined level is generated at the first electrical motor and the second electrical motor. ### Claim 6 (depends on 3) The travel driving apparatus of a vehicle according to claim 3, further comprising: a second electrical motor for regenerating power by rotational force of the other one of the front wheel and the rear wheel of the vehicle, and supplying the power to a battery not via the transformer; and a computing section for computing a distribution ratio between regenerative torque of the first electrical motor and regenerative torque of the second electrical motor, wherein the computing section corrects regenerative torques of the first electrical motor and the second electrical motor based on temperature of the step-up converter so that regenerative braking torque not less than a predetermined level is generated at the first electrical motor and the second electrical motor. ### Claim 7 (depends on 4) The travel driving apparatus of a vehicle according to claim 4, wherein the computing section decreases regenerative torque generated at the first electrical motor as temperature of the transformer becomes higher. ### Claim 8 (depends on 5) The travel driving apparatus of a vehicle according to claim 5, wherein the computing section decreases regenerative torque generated at the first electrical motor as temperature of the transformer becomes higher. ### Claim 9 (depends on 6) The travel driving apparatus of a vehicle according to claim 6, wherein the computing section decreases regenerative torque generated at the first electrical motor as temperature of the transformer becomes higher.