# US 10,479,211 B2 · Regenerative braking apparatus for vehicle and method using the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,479,211 B2 - Document ID: US10479211B2 - Status: Granted - Kind: B2 - Application number: 15/611,118 - Filed: 2017-06-01 - Published: 2018-05-10 - Granted: 2019-11-19 - Earliest claimed: 2016-11-08 - Assignees: Hyundai Motor Company; Kia Motors Corporation - Applicants: Hyundai Motor Company; Kia Motors Corporation - Inventors: Jee Wook Huh; Kyoungcheol Oh; Gwang Il Du; Eunbae Koh; Teh Hwan Cho - Web page: https://patentgrep.com/patent/US10479211B2 ## CPC - B60L 58/15: Preventing overcharging - B60L 7/18: Controlling the braking effect (B60L7/12, B60L7/14, B60L7/16 take precedence) - B60L 7/26: Controlling the braking effect - B60L 15/2009: {for braking} - 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 58/12: responding to state of charge [SoC] - B60T 1/10: by utilising wheel movement for accumulating energy, e.g. driving air compressors - H02P 3/14: by regenerative braking - B60L 2240/14: Acceleration - B60L 2250/26: by pedal actuation - B60L 2260/20: Drive modes; Transition between modes - B60T 8/172: Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters {(B60T8/17551 takes precedence)} - B60T 2260/04: Automatic transmission - B60T 2270/604: Merging friction therewith; Adjusting their repartition - 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 - Y02T 90/12: Electric charging stations - 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 - H02P: CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A regenerative braking control apparatus of a vehicle may include: a drive motor; a battery for providing driving voltage to the drive motor; a data detector for detecting a driving state information of the vehicle; and a vehicle controller generating a total braking amount based on the driving state information. In particular, the vehicle controller generates a regenerative braking possible amount by using a generatable power of the drive motor and a chargeable power of the battery, performs a regenerative braking when the regenerative braking possible amount is greater than the total braking amount, and also prepares a hydraulic pressure braking based on the regenerative braking possible amount and a regenerative braking amount based on the regenerative braking. ## Claims ### Claim 1 A regenerative braking control apparatus of a vehicle comprising: a drive motor; a battery configured to provide driving voltage to the drive motor; a data detector configured to detect driving state information of the vehicle; and a vehicle controller configured to: generate a total braking amount based on the driving state information, generate a regenerative braking possible amount based on a generatable power of the drive motor and a chargeable power of the battery, perform a regenerative braking when the regenerative braking possible amount is greater than the total braking amount, and prepare a hydraulic pressure braking based on the regenerative braking possible amount and a regenerative braking amount based on the regenerative braking, wherein the vehicle controller is configured to: calculate a calculation value based on the regenerative braking possible amount and the regenerative braking amount, prepare the hydraulic pressure braking by supplying a hydraulic pressure to a brake cylinder connected with a brake pad when the calculation value is less than a reference value, and control a brake system configured to supply the hydraulic pressure to the brake cylinder connected with the brake pad until the brake pad and a brake disk are a state of a kiss point. ### Claim 2 (depends on 1) The regenerative braking control apparatus of claim 1, wherein when the vehicle controller receives a changed driving state information from the data detector, the vehicle controller is configured to update the total braking amount based on the changed driving state information, and to calculate a hydraulic pressure braking amount based on the updated total braking amount and the regenerative braking amount when the regenerative braking possible amount is less than the updated total braking amount. ### Claim 3 (depends on 2) The regenerative braking control apparatus of claim 2, wherein the vehicle controller is configured to calculate the hydraulic pressure braking amount by subtracting the regenerative braking amount from the updated total braking amount, and to perform the hydraulic pressure braking based on the hydraulic pressure braking amount. ### Claim 4 (depends on 1) The regenerative braking control apparatus of claim 1, wherein the vehicle controller is configured to calculate the regenerative braking possible amount based on the generatable power of the drive motor, the chargeable power of the battery and a consumed power by electrical devices. ### Claim 5 (depends on 1) The regenerative braking control apparatus of claim 1, wherein the vehicle controller is configured to calculate a hand over ratio when a shift stage is changed in a transmission, and to calculate the regenerative braking possible amount based on the generatable power of the drive motor, the chargeable power of the battery, the hand over ratio, and a consumed power by electrical devices. ### Claim 6 (depends on 5) The regenerative braking control apparatus of claim 5, wherein the electrical devices include at least one of a hybrid starter and generator (HSG), a full automatic temperature control system (FATC), and a low-voltage DC-DC Converter (LDC). ### Claim 7 (depends on 1) The regenerative braking control apparatus of claim 1, wherein the vehicle controller is configured to perform the regenerative braking and the hydraulic pressure braking when the regenerative braking possible amount is equal to or less than the total braking amount. ### Claim 8 A method of controlling regenerative braking of a vehicle, the method comprising: calculating, by a vehicle controller, a total braking amount based on driving state information; calculating, by the vehicle controller, a regenerative braking possible amount based on a generatable power of a drive motor and a chargeable power of a battery; determining, by the vehicle controller, whether the regenerative braking possible amount is greater than the total braking amount; performing, by the vehicle controller, the regenerative braking when the regenerative braking possible amount is greater than the total braking amount; and preparing, by the vehicle controller, a hydraulic pressure braking based on a regenerative braking amount based on the regenerative braking possible amount and the regenerative braking, wherein the preparing the hydraulic pressure braking includes: calculating a calculation value based on the regenerative braking possible amount and the regenerative braking amount; determining whether the calculation value is less than a reference value; supplying a hydraulic pressure to a brake cylinder connected with a brake pad when the calculation value is less than the reference value, and wherein in the preparing the hydraulic pressure braking, the hydraulic pressure is supplied to the brake cylinder connected with the brake pad until the brake pad and a brake disk are a state of a kiss point. ### Claim 9 (depends on 8) The method of claim 8, wherein in the calculating the regenerative braking possible amount, the regenerative braking possible amount is calculated based on the generatable power of the drive motor, the chargeable power of the battery, and a consumed power by electrical devices. ### Claim 10 (depends on 8) The method of claim 8, wherein the calculating the regenerative braking possible amount includes: determining whether a gear-shift is changed in a transmission; determining a hand over ratio based on a gear-shift stage of the transmission when the gear-shift is changed in the transmission; and calculating the regenerative braking possible amount based on the hand over ratio, the generatable power of the drive motor, the chargeable power of the battery, and the consumed power by the electrical devices. ### Claim 11 (depends on 8) The method of claim 8, wherein the calculation value is calculated by subtracting the regenerative braking amount from the regenerative braking possible amount. ### Claim 12 (depends on 8) The method of claim 8, further comprising: after preparing the hydraulic pressure braking, updating, by the vehicle controller, the total braking amount based on a change to the driving state information; calculating, by the vehicle controller, a hydraulic pressure braking amount by subtracting the regenerative braking amount from the updated total braking amount when the regenerative braking possible amount is less than the updated total braking amount; and performing, by the controller, the hydraulic pressure braking based on the hydraulic pressure braking amount. ### Claim 13 (depends on 8) The method of claim 8, further comprising: performing the regenerative braking and the hydraulic pressure braking when the regenerative braking possible amount is equal to or less than the total braking amount after determining whether the regenerative braking possible amount is greater than the total braking amount.