JPH0222002U

JPH0222002U -

Info

Publication number: JPH0222002U
Application number: JP1988100940U
Authority: JP
Priority date: 1988-07-28
Filing date: 1988-07-28
Publication date: 1990-02-14

Description

[Brief explanation of the drawing]

第１，２図は本考案に係る電動車両の制御装置
の一実施例を示す図であり、第１図はその全体構
成図、第２図はその作用を説明するための図、第
３，４図は従来の電動車両の制御装置を示す図で
あり、第３図はその全体構成図、第４図はその作
用を説明するための図である。２１……制御装置、２２……前進スイツチ、２
３……後進スイツチ、｛２７……前進リレー、２
８……後進リレー｝（前後進切換手段）、｛２７
Ｏ，２８Ｏ……ＮＯ接点、２７Ｃ，２８Ｃ……Ｎ
Ｃ接点｝（電磁接点）、２９……バツテリー、３
０……ＤＣモータ（電動機）、３３……バイパス
手段、Ｄ_１５，Ｄ_１６……還流ダイオード、Ｒ_１
５……減衷抵抗。 1 and 2 are diagrams showing one embodiment of a control device for an electric vehicle according to the present invention, in which FIG. 1 is a diagram of its overall configuration, FIG. 2 is a diagram for explaining its operation, and FIG. FIG. 4 is a diagram showing a conventional electric vehicle control device, FIG. 3 is an overall configuration diagram thereof, and FIG. 4 is a diagram for explaining its operation. 21...control device, 22...forward switch, 2
3...Reverse switch, {27...Forward relay, 2
8...Reverse relay} (forward/forward switching means), {27
O, 28O...NO contact, 27C, 28C...N
C contact} (electromagnetic contact), 29...Battery, 3
0...DC motor (electric motor), 33...Bypass means, _D15 , _D16 ...Freewheeling diode, _{R1
5} ...Reducing resistance.

Claims

[Claim for Utility Model Registration] A forward and reverse switch that is operated when an electric vehicle moves forward and backward to switch between forward and reverse, and a holding current corresponding to the forward and reverse switch that holds the electromagnetic contact when flowing from the battery. ,
A forward/reverse switching means for moving the vehicle forward or backward by changing the direction of the drive current flowing from the battery to the electric motor depending on the holding state, and a forward/reverse switching means that forms a closed circuit with the forward/reverse switching means and one of the holding currents flowing to the forward/reverse switching means. It is equipped with a freewheeling diode and a damping resistor that circulate the battery in the direction of the battery, and the vehicle moves forward.
When traveling in reverse, the magnitude of the drive current is changed according to the opening degree of the accelerator pedal to increase or decrease the driving force generated by the electric motor, and when switching between forward and reverse, the holding current is applied to maintain the previous direction of travel. In the control device for an electric vehicle, the control device for an electric vehicle switches the direction of travel of the vehicle by braking the vehicle by damping the vehicle using a damping resistor and returning the forward/reverse switching means from a holding state to a non-holding state, wherein at least one of the forward and reverse switches A control device for an electric vehicle, characterized in that a bypass means is provided in conjunction with the above to circulate a holding current from the freewheeling diode toward the battery by bypassing the damping resistor when the vehicle moves forward and backward.