To reduce a regeneration amount before a charging amount of a battery reaches a charging limit by referring to a state indicating a sign of the charging amount reaching the charging limit in the battery so as to avoid rapid decrease of a brake force of an entire vehicle caused by regeneration being stopped due to an input limit of the battery in a brake control of an electric vehicle which performs regeneration cooperative brake control by a motor.SOLUTION: A regeneration cooperative brake control device 50 of a vehicle 10 which is driven by a motor 20 determines a demanded brake force in the vehicle, detects a charging tightness index value indicating a degree of tightness to a charing limit of a charging amount of a battery charged by regeneration of the motor, and determines a limit value of the regeneration amount by the motor based on a charging allowance index value. The regeneration cooperative brake control device 50 controls the regeneration amount by the motor so as to generate a regenerative brake force within the demanded brake force to prevent the regeneration brake force from exceeding the limit value of the regeneration amount and controls a friction brake force in a wheel so that the friction brake force becomes a brake force obtained by subtracting the regeneration brake force corresponding to the regeneration amount from the demanded brake force.SELECTED DRAWING: Figure 3
【課題】 モータによる回生協調制動を実施する電動車の制動制御に於いて、電池の入力制限に起因する回生の停止による車両全体の制動力の急減を回避するために、電池に於ける充電限界に至る予兆となる状態を参照して、充電限界に至る前に回生量を低減する。【解決手段】 モータ20で駆動される車両10の回生協調制動制御装置50は、車両に於ける要求制動力を決定し、モータの回生により充電される電池の充電量の充電限界までの逼迫の度合を表わす充電逼迫指標値を検出し、充電余裕指標値に基づいてモータによる回生量の制限値を決定し、回生量の制限値を超えないように要求制動力以内の回生制動力を発生するようモータによる回生量を制御し、車輪に於ける摩擦制動力を要求制動力から回生量に対応する回生制動力を差し引いて得られる制動力となるように制御する。【選択図】 図3
REGENERATION COOPERATIVE BRAKE CONTROL DEVICE OF VEHICLE
車両の回生協調制動制御装置
2024-04-25
Patent
Electronic Resource
Japanese
VEHICLE BRAKE CONTROL DEVICE, VEHICLE BRAKE CONTROL METHOD AND VEHICLE BRAKE SYSTEM
European Patent Office | 2019
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