VEHICULAR BRAKE SYSTEM

• Main Authors: SAITO TOMOAKI, INADA JUN, MUTO MITSUHIRO
• Format: Patent
• Language: English; Japanese
• Published: 16.03.2015
• Subjects: ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES; ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; PERFORMING OPERATIONS; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OFVEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT; TRANSPORTING; VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES; VEHICLES IN GENERAL

PROBLEM TO BE SOLVED: To increase energy efficiency of a vehicle while securing braking torque with reasonable structure.SOLUTION: A vehicular control device includes: a friction brake mechanism 20 which generates friction braking torque corresponding to depression operation of a brake pedal 21; a motor 18 which generates regenerative braking torque by receiving regenerative control; a high voltage battery 33 which stores regenerative power of the motor 18; an engine 14 which distributes the regenerative power and the power of the high voltage battery 33 to a cooling water heater 37 etc.; and an ECU 40 which obtains an SOC of the high voltage battery 33 and controls the motor 18 and an inverter 32 based on target braking torque Tt corresponding to an operation amount of the brake pedal 21 and the SOC. The ECU 40 obtains target regenerative torque Tbt, and obtains regenerative power corresponding to the target regenerative torque Tbt. And, the ECU 40 controls the inverter 32 in such a manner that excessive regenerative power which cannot be stored in the high voltage battery 33 among the regenerative power is distributed to the cooling water heater 37 etc. 【課題】合理的な構成で、制動トルクを確保しつつ車両のエネルギ効率を高める。【解決手段】車両用制御装置は、ブレーキペダル２１の踏み込み操作に応じた摩擦制動トルクを発生する摩擦ブレーキ機構２０と、回生制御を受けることにより回生制動トルクを発生するモータ１８と、モータ１８の回生電力を蓄電する高圧バッテリ３３と、回生電力や高圧バッテリ３３の電力を冷却水ヒータ３７等に配電するエンジン１４と、高圧バッテリ３３のＳＯＣを求め、ブレーキペダル２１の操作量に応じた目標制動トルクＴｔとＳＯＣとに基づき、モータ１８及びインバータ３２を制御するＥＣＵ４０とを備える。ＥＣＵ４０は、目標回生トルクＴｂｔを求め、この目標回生トルクＴｂｔに対応する回生電力を求める。そして、この回生電力のうち、高圧バッテリ３３に蓄電できない余剰回生電力を冷却水ヒータ３７等に配電すべくインバータ３２を制御する。【選択図】図１