[미국특허]
Method of charge control for vehicle hybrid drive batteries
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H02J-007/32
B60L-011/12
출원번호
US-0908447
(1978-05-22)
발명자
/ 주소
Park Robert H. (Brewster MA)
출원인 / 주소
Battery Development Corporation (New York NY 03)
인용정보
피인용 횟수 :
80인용 특허 :
1
초록▼
A method for controlling the charging of fast discharge and recharge type propulsion battery components of engine-electric hybrid drive systems for road vehicles, wherein the control objectives are to, minimize discharge of gas through battery cell vents, minimize fuel use, allow employment of a sma
A method for controlling the charging of fast discharge and recharge type propulsion battery components of engine-electric hybrid drive systems for road vehicles, wherein the control objectives are to, minimize discharge of gas through battery cell vents, minimize fuel use, allow employment of a small battery, and provide for long discharge-recharge cycle life, and the control method consists in the steps of, 1－providing so that, if not earlier terminated as a result of operator termination of braking, or a drop in vehicle speed, termination of regenerative braking will be initiated at a point in time determined by a control system generated indication of state of charge just prior to initiation of braking, and the subsequent history of cell current, 2－providing so that, following a partial battery discharge, when and as motor speed allows, supplementary engine implemented battery charging will take place prior to the next advent of regenerative braking, with charge termination made responsive to attainment of a battery voltage per series connected cell that is determined by a control system generated indication of state of charge following discharge, 3－providing to temporarily revert to non-hybrid, engine implemented drive, when cell voltage on battery deep discharge falls below a value that depends in a predetermined way on cell current, 4－when and as service use conditions so warrant, providing to effect increase in battery temperature with use of heat supplied by the engine exhaust, and providing, additionally, to temporarily revert to non-hybrid, engine implemented drive, when, and for so long a period as battery cell internal temperature holds below a predetermined value.
대표청구항▼
In a self-propelled parallel hybrid drive type vehicle which includes an electric motor and a fast discharge-recharge type propulsion battery, as well as an engine, and a fast discharge-recharge battery control system, and wherein there is provision to charge the fast discharge-recharge battery with
In a self-propelled parallel hybrid drive type vehicle which includes an electric motor and a fast discharge-recharge type propulsion battery, as well as an engine, and a fast discharge-recharge battery control system, and wherein there is provision to charge the fast discharge-recharge battery with employment of regenerative braking, and to employ supplementary charging with use of energy supplied by the engine, the method of controlling the charging of the fast discharge-recharge type battery which consists in the steps of, 1. as an override of the operator\s control of regenerative braking, providing so that, if not earlier terminated as a result of operator control action, or a drop in vehicle speed, termination of regenerative braking will take place at a point in time determined, at least in part, by the history of cell current subsequent to braking initiation, 2. providing via response to time-related variations in the magnitude of battery voltage and current, to generate within the said charge control system, one or more indications of the state of charge of the fast discharge-recharge battery following discharge termination, 3. providing so that supplementary charging, when not held in abeyance by regenerative braking, and except when interrupted by a process of discharge, will terminate when the fast discharge-recharge battery voltage per series connected cell, attains or exceeds a value that depends on information obtained in step 2 above.
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