# US 2017/0282926 A1 · Regeneration control apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0282926 A1 - Document ID: US20170282926A1 - Status: Published application - Kind: A1 - Application number: 15/471,471 - Filed: 2017-03-28 - Published: 2017-10-05 - Earliest claimed: 2016-03-29 - Assignees: Mitsubishi Jidosha Kogyo Kabushiki Kaisha - Applicants: Mitsubishi Jidosha Kogyo Kabushiki Kaisha - Inventors: Akira HASHIZAKA; Masaaki MOTAI; Hidetaka MITSUOKA; Toshikatsu SUZUKI; Masahiro MURASE - Web page: https://patentgrep.com/patent/US20170282926A1 ## CPC - B60W 30/18127: {Regenerative braking} - B60L 7/14: for vehicles propelled by AC motors - B60L 7/18: Controlling the braking effect (B60L7/12, B60L7/14, B60L7/16 take precedence) - B60L 15/2009: {for braking} - B60L 15/2045: {for optimising the use of energy} - B60T 8/171: Detecting parameters used in the regulation; Measuring values used in the regulation - B60L 2210/44: Current source inverters - B60L 2240/14: Acceleration - B60L 2240/423: Torque - B60L 2240/80: Time limits - B60L 2250/12: by confirmation, e.g. of the input - B60L 2250/24: by lever actuation - B60L 2250/28: Accelerator pedal thresholds - B60L 2260/20: Drive modes; Transition between modes - B60L 2260/26: Transition between different drive modes - B60L 2260/46: by self learning - B60T 2270/60: Regenerative braking - B60W 50/14: Means for informing the driver, warning the driver or prompting a driver intervention - B60W 2510/101: Transmission neutral state - B60W 2510/18: Braking system - B60W 2520/04: Vehicle stop - B60W 2520/105: Longitudinal acceleration - B60W 2520/30: Wheel torque - B60W 2710/18: Braking system - B60W 2720/106: Longitudinal acceleration - Y02T 10/64: Electric machine technologies in electromobility - Y02T 10/72: Electric energy management in electromobility - 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 - 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 - B60T: VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL (electrodynamic brake systems for vehicle, in general B60L; brakes per se, i.e. devices where braking effect occurs, including ultimate brake actuators, F16D); ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A regeneration control apparatus which controls a regenerative braking force of an electric motor for driving an electric motor vehicle includes: a regeneration operation unit operated by a driver to select magnitude of the regenerative braking force stepwise from selection stages; a default operation unit operated by the driver to change the magnitude of the regenerative braking force to one of the selection stages which has been set as a default stage; a detection unit detecting an operation state on the regeneration operation unit during a learning period; and a default stage changing unit, when one of the selection stages whose selection frequency is highest during the learning period is different from one of the selection stages which has been currently set as the default stage, changing the default stage to another selection stage. ## Claims ### Claim 1 A regeneration control apparatus which is configured to control a regenerative braking force of an electric motor which is configured to drive an electric motor vehicle, the regeneration control apparatus comprising: a regeneration operation unit which is adapted to be operated by a driver to select magnitude of the regenerative braking force stepwise from selection stages; a default operation unit which is adapted to be operated by the driver to change the magnitude of the regenerative braking force to one of the selection stages which has been set as a default stage; a detection unit which is configured to detect an operation state on the regeneration operation unit during a learning period; and a default stage changing unit which, when one of the selection stages whose selection frequency is highest during the learning period is different from one of the selection stages which has been currently set as the default stage, is configured to change the default stage to another selection stage. ### Claim 2 (depends on 1) The regeneration control apparatus according to claim 1, wherein the default stage changing unit is configured to change the default stage to the one of the selection stages whose selection frequency is highest during the learning period. ### Claim 3 (depends on 1) The regeneration control apparatus according to claim 1, wherein the default stage changing unit is configured to change the default stage to one of the selection stages which is closer to the one of the selection stages whose selection frequency is highest during the learning period than the one of the selection stages which has been currently set as the default stage. ### Claim 4 (depends on 1) The regeneration control apparatus according to claim 1, wherein the detection unit is configured to set a period in which an accelerator opening degree of the electric motor vehicle is equal to or lower than a predetermined value, as the learning period. ### Claim 5 (depends on 2) The regeneration control apparatus according to claim 2, wherein the detection unit is configured to set a period in which an accelerator opening degree of the electric motor vehicle is equal to or lower than a predetermined value, as the learning period. ### Claim 6 (depends on 3) The regeneration control apparatus according to claim 3, wherein the detection unit is configured to set a period in which an accelerator opening degree of the electric motor vehicle is equal to or lower than a predetermined value, as the learning period. ### Claim 7 (depends on 1) The regeneration control apparatus according to claim 1, wherein the default stage changing unit is configured to set a period between a time when the electric motor vehicle starts traveling from a stop state and a time when the electric motor vehicle stops again, as a unit learning period, and is configured to change the default stage when the electric motor vehicle starts traveling next time. ### Claim 8 (depends on 2) The regeneration control apparatus according to claim 2, wherein the default stage changing unit is configured to set a period between a time when the electric motor vehicle starts traveling from a stop state and a time when the electric motor vehicle stops again, as a unit learning period, and is configured to change the default stage when the electric motor vehicle starts traveling next time. ### Claim 9 (depends on 3) The regeneration control apparatus according to claim 3, wherein the default stage changing unit is configured to set a period between a time when the electric motor vehicle starts traveling from a stop state and a time when the electric motor vehicle stops again, as a unit learning period, and is configured to change the default stage when the electric motor vehicle starts traveling next time. ### Claim 10 (depends on 4) The regeneration control apparatus according to claim 4, wherein the default stage changing unit is configured to set a period between a time when the electric motor vehicle starts traveling from a stop state and a time when the electric motor vehicle stops again, as a unit learning period, and is configured to change the default stage when the electric motor vehicle starts traveling next time. ### Claim 11 (depends on 5) The regeneration control apparatus according to claim 5, wherein the default stage changing unit is configured to set a period between a time when the electric motor vehicle starts traveling from a stop state and a time when the electric motor vehicle stops again, as a unit learning period, and is configured to change the default stage when the electric motor vehicle starts traveling next time. ### Claim 12 (depends on 6) The regeneration control apparatus according to claim 6, wherein the default stage changing unit is configured to set a period between a time when the electric motor vehicle starts traveling from a stop state and a time when the electric motor vehicle stops again, as a unit learning period, and is configured to change the default stage when the electric motor vehicle starts traveling next time. ### Claim 13 (depends on 1) The regeneration control apparatus according to claim 1, wherein the default stage changing unit is configured to set a period from start-up to termination of a main system of the electric motor vehicle, as a unit learning period, and is configured to change the default stage when the main system is started up next time. ### Claim 14 (depends on 2) The regeneration control apparatus according to claim 2, wherein the default stage changing unit is configured to set a period from start-up to termination of a main system of the electric motor vehicle, as a unit learning period, and is configured to change the default stage when the main system is started up next time. ### Claim 15 (depends on 3) The regeneration control apparatus according to claim 3, wherein the default stage changing unit is configured to set a period from start-up to termination of a main system of the electric motor vehicle, as a unit learning period, and is configured to change the default stage when the main system is started up next time. ### Claim 16 (depends on 4) The regeneration control apparatus according to claim 4, wherein the default stage changing unit is configured to set a period from start-up to termination of a main system of the electric motor vehicle, as a unit learning period, and is configured to change the default stage when the main system is started up next time. ### Claim 17 (depends on 5) The regeneration control apparatus according to claim 5, wherein the default stage changing unit is configured to set a period from start-up to termination of a main system of the electric motor vehicle, as a unit learning period, and is configured to change the default stage when the main system is started up next time. ### Claim 18 (depends on 6) The regeneration control apparatus according to claim 6, wherein the default stage changing unit is configured to set a period from start-up to termination of a main system of the electric motor vehicle, as a unit learning period, and is configured to change the default stage when the main system is started up next time.