CN103456569A

CN103456569A - Energy-saving-type multi-contact-set direct-current contactor

Info

Publication number: CN103456569A
Application number: CN201310396784XA
Authority: CN
Inventors: 周潇
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-09-04
Filing date: 2013-09-04
Publication date: 2013-12-18

Abstract

The invention discloses an energy-saving-type multi-contact-set direct-current contactor which has practicability, and belongs to the technical field of electric car engine fittings. The energy-saving-type multi-contact-set direct-current contactor is composed of an injection molding insulation outer shell, a driving motor, a plurality of stationary contact sets, a plurality of movable contact sets and the like. The driving motor which is installed inside the injection molding insulation outer shell drives a screw to rotate through forward rotation or inversed rotation, and therefore a pushing rod is driven to generate the pushing or pulling mechanical motion. A movable contact arm is installed on the pushing rod. The movable contact sets are arranged on the movable contact arm. The pushing rod drives the movable contact sets to move left and right between the stationary contact sets. A photoelectric position sensor detects the motion position of the pushing rod and controls the driving motor to run down. The stationary contact sets are fixed inside the injection molding insulation outer shell. The energy-saving-type multi-contact-set direct-current contactor is applied in a three-phase direct-current motor, the space is greatly saved, the power consumption when a device moves is saved, the energy-saving and consumption-reducing effects are achieved, the energy-saving-type multi-contact-set direct-current contactor does not emit heat, the fire hazards are greatly reduced, and the energy-saving-type multi-contact-set direct-current contactor is suitable for popularization and application in electric cars.

Description

Energy-saving multiconductor group D.C. contactor

Technical field

The present invention relates to a kind of D.C. contactor, particularly a kind of energy-saving multiconductor D.C. contactor that is applied to electric vehicle engine.

Technical background

In recent years, along with wideling popularize of the direct-flow electricity utilization apparatus such as electric automobile, especially a large amount of exploitations and the use of the three-phase DC motor of used for electric vehicle, make multiconductor group D.C. contactor product seem very rare, what can see on the market is nothing but single-contact DC. current electromagnetic contactor, as long as this relay is work, coil will a direct power supply so, very uneconomical, the fire hazard that simultaneously also will have heating to bring, and only has a contact, can't in the three-phase motor with permanent magnets circuit, use, this seems incompatible with the energy-conservation main trend of promoting electric automobile.

Summary of the invention

For overcoming above-mentioned prior art deficiency, the invention discloses a kind of energy-saving multiconductor group D.C. contactor that possesses practicality, realized that many groups contact changes with time point, continued a few tens of milliseconds with minimum power consumption in the time of only need moving in contact, not power consumption when do not move in contact, energy-saving effect is remarkable, this device volume is little, can be placed on motor interior or terminal box near, very practical, and with low cost, be convenient to promote.

Technical scheme that the present invention has adopted is energy-saving multiconductor group D.C. contactor, by the injection moulding insulation crust, the formations such as drive motor and many group fixed contacts and moving contact, be arranged on the drive motor of injection moulding insulation crust inside, drive the screw rod rotation by forward or reverse, thereby drive push rod to produce the mechanical movement that pushes away or draw, the moving contact arm is installed on push rod, the moving contact group is set on the moving contact arm, push rod drives the moving contact group and do side-to-side movement between the fixed contact group, reach the purpose of Switching power, photoelectrical position sensor detects the movement position of push rod, while the stop position signal of push rod being detected, pass to outside control circuit, controlling drive motor through control circuit shuts down, guarantee that mechanical movement is accurately errorless.Described moving contact arm arranges spring, the end that described spring fitting is fixedly connected with the injection moulding insulation crust at the moving contact arm, the effect of spring be guarantee moving contact and fixed contact in conjunction with the time enough pressure arranged.The fixed contact group is fixed in the injection moulding insulation crust, and terminals are drawn outside the injection moulding insulation crust, the moving contact arm is fixed in the injection moulding insulation crust, and terminals are drawn outside the injection moulding insulation crust, drive motor is direct-flow deceleration electric motor, speed reducing ratio is greater than 5:1, and electromotor velocity, no-load voltage ratio, moving contact travel parameters cooperatively interact, and makes contact move the corresponding time and is less than 1 second.

The output shaft of described drive motor is connected with screw rod by the axis hole of screw rod one end, and radially is screwed at the position of screw rod mounted motor axle.

Described photoelectrical position sensor replaces with sensitive switch.

Described drive motor replaces with decelerating step motor.

After the invention has the beneficial effects as follows in the production of three-phase DC motor and having adopted technique scheme in controlling, not only greatly saved space, and the power consumption while having saved the device motion, faint control power consumption also is convenient to the unified control of vehicle-mounted computer simultaneously, contact that the more important thing is contact is greater than traditional relay, the contact contact resistance is reduced, and no longer heating, also greatly reduce disaster hidden-trouble when reducing power consumption.

The accompanying drawing explanation

Fig. 1 is energy-saving multiconductor group D.C. contactor structural representation.

In figure, 1, the injection moulding insulation crust, 2, drive motor, 3, screw rod, 4, push rod, 5, spring, 6, photoelectrical position sensor, 7,10,11,14,15 and 18 is fixed contact, 8,9,12,13,16 and 17 is moving contact, 19, the moving contact arm, 20, screw.

Embodiment

Below in conjunction with accompanying drawing and simple embodiment, embodiment, structure, feature and effect thereof that foundation the present invention is proposed, be described in detail as follows.

As shown in Figure 1, a kind of energy-saving multiconductor group D.C. contactor, by injection moulding insulation crust 1, the formations such as drive motor 2 and many group fixed contacts and moving contact, be arranged on the drive motor 2 of injection moulding insulation crust 1 inside, pass through forward or reverse, drive screw rod 3 rotations, thereby drive push rod 4 to produce the mechanical movement that pushes away or draw, drive the moving contact group on moving contact arm 19 with this, it is moving contact 8, moving contact 9, moving contact 12, moving contact 13, moving contact 16, moving contact 17 is done side-to-side movement simultaneously between the fixed contact group, reach the purpose of circuit switching, photoelectrical position sensor 6 detects the movement position of push rod 4, while the stop position signal of push rod 4 being detected, controlling drive motor 2 through outside control circuit shuts down, guarantee that mechanical movement is accurately errorless, described moving contact arm 19 arranges spring 5, described spring 5 is arranged on the end that moving contact arm 19 is connected with injection moulding insulation crust 1.The effect of spring 5 be guarantee moving contact and fixed contact in conjunction with the time enough pressure arranged, described fixed contact group is fixed contact 7, fixed contact 10, fixed contact 11, fixed contact 14, fixed contact 15, fixed contact 18 all is fixed in injection moulding insulation crust 1, and terminals are drawn outside injection moulding insulation crust 1, three moving contact arms 19 all are fixed in injection moulding insulation crust 1 and terminals are drawn outside injection moulding insulation crust 1, drive motor 2 is direct-flow deceleration electric motor, speed reducing ratio is greater than 5:1, before drive motor 2 slows down, speed is 3400 rev/mins, 5 millimeters of moving contact strokes, during drive motor 2 forward rotation, screw rod 3 pulls push rod 4 to be moved to the left, until during full stroke, photoelectrical position sensor 6 sends signal, control system stops drive motor 2 operations, due to screw rod 3, the comprehensive no-load voltage ratio of drive motor 2 is very high, add drive motor 2 and itself cogging torque is arranged, so when drive motor 2 stops, each moving contact is by locked, even in the situation that vibrations can not get loose yet, now the state of each contact is: moving contact 8 and fixed contact 7 combinations, moving contact 12 and fixed contact 11 combinations, moving contact 16 and fixed contact 15 combinations, when drive motor 2 rotates backward, screw rod 3 promotes push rod 4 and moves right, until during full stroke, photoelectrical position sensor 6 sends signal, control system stops drive motor 2 operations, due to screw rod 3, the comprehensive no-load voltage ratio of drive motor 2 is very high, add drive motor 2 and itself cogging torque is arranged, so when drive motor 2 stops, each moving contact is by locked, even in the situation that vibrations can not get loose yet, now the state of each contact is: moving contact 9 and fixed contact 10 combinations, moving contact 13 and fixed contact 14 combinations, moving contact 17 and fixed contact 18 combinations, just realized the switching of each moving contact between different fixed contacts by the control to drive motor 2 rotatings like this, realized the circuit switching.

Described photoelectrical position sensor 6 use sensitive switches replace.

Described drive motor 2 replaces with decelerating step motor.

It is example that the present invention of take controls two speed threephase motors, two speed three phase electric machines are that two the motor windings different by electrical quantity form, low speed and high speed are drawn respectively three phase lines, while giving the low speed phase line for three-phase electricity, motor is just with tick-over, while giving the high speed phase line for three-phase electricity, motor is just with high speed operation, method of attachment is as follows: the A of three phase mains join moving

contact

8 and 9, the B of three phase mains join moving contact 12 and 13, the C of three phase mains join moving

contact

16 and 17, three low speed phase lines of controlled two speed three phase electric machines connect respectively fixed

contact

7, 11, 15, three high phase lines that hasten of controlled two speed three phase electric machines connect respectively fixed

contact

10, 14, 18, contacts status while being turned to from aforementioned drive motor 2 differences like this, during drive motor 2 forward action, controlled motor is tick-over, during drive motor 2 reversion action, controlled motor is high speed operation.

The above, only simpler embodiment of the present invention, not the present invention is done to any form and structural restriction, every foundation technical spirit of the present invention, to any simple modification equivalent variations made for any of the above embodiments and modification, all still belongs in the scope of technical solution of the present invention.

Claims

1. an energy-saving multiconductor group D.C. contactor, by the injection moulding insulation crust, the formations such as drive motor and many group fixed contacts and moving contact, it is characterized in that: be arranged on the inner drive motor (2) of injection moulding insulation crust (1), drive screw rod (3) rotation by forward or reverse, thereby drive push rod (4) to produce the mechanical movement that pushes away or draw, the upper moving contact arm (19) of installing of push rod (4), the moving contact arm arranges the moving contact group on (19), push rod (4) drives the moving contact group and do side-to-side movement between the fixed contact group, reach the purpose of Switching power, photoelectrical position sensor (6) detects the movement position of push rod (4), the stop position signal of push rod (4) detected, through outside control circuit, controlling drive motor (2) shuts down, the fixed contact group is fixed in injection moulding insulation crust (1), and terminals are drawn outside injection moulding insulation crust (1), each root moving contact arm (19) all is fixed in injection moulding insulation crust (1), and terminals are drawn outside injection moulding insulation crust (1), drive motor (2) is direct-flow deceleration electric motor, speed reducing ratio is greater than 5:1.

2. energy-saving multiconductor group D.C. contactor according to claim 1, it is characterized in that described moving contact arm (19) installs three, described moving contact group, fixed contact group form by three groups respectively, be that the moving contact group consists of moving contact (8), moving contact (9), moving contact (12), moving contact (13), moving contact (16), moving contact (17), the fixed contact group consists of fixed contact (7), fixed contact (10), fixed contact (11), fixed contact (14), fixed contact (15), fixed contact (18).

3. energy-saving multiconductor group D.C. contactor according to claim 1, is characterized in that described moving contact arm (19) arranges spring (5), and described spring (5) is arranged on the end that moving contact arm (19) is connected with injection moulding insulation crust (1).

4. energy-saving multiconductor group D.C. contactor according to claim 1, the output shaft that it is characterized in that described drive motor (2) is connected with screw rod (3) by the axis hole of screw rod (3) one ends, and at the position of screw rod (3) mounted motor axle, radially uses screw (20) to fix.

5. energy-saving multiconductor group D.C. contactor according to claim 1, is characterized in that described photoelectrical position sensor (6) replaces with sensitive switch.

6. energy-saving multiconductor group D.C. contactor according to claim 1, is characterized in that described drive motor (2) replaces with decelerating step motor.