CN203788195U - Automobile start motor protection circuit - Google Patents
Automobile start motor protection circuit Download PDFInfo
- Publication number
- CN203788195U CN203788195U CN201420157209.4U CN201420157209U CN203788195U CN 203788195 U CN203788195 U CN 203788195U CN 201420157209 U CN201420157209 U CN 201420157209U CN 203788195 U CN203788195 U CN 203788195U
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- circuit
- motor
- triode
- delay
- stop
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Abstract
The utility model discloses an automobile start/stop motor protection circuit and aims to solve problems that: power failure or short circuit of a main motor coil of a start/stop motor caused by overlarge current under the condition of frequent start/stop of an automobile in the prior art occurs; a switch contact is liable to burn or bond; service life of the motor is greatly reduced. The automobile start motor protection circuit comprises a time-delay circuit connected in parallel between two ends of an automobile start circuit, and a magnetic switch Ka connected between the time-delay circuit and the stop/start motor, wherein the time-delay circuit comprises a voltage stabilizer circuit arranged between the time-delay circuit and the automobile start circuit and a driving circuit arranged between the time-delay circuit and the magnetic switch Ka. The automobile start motor protection circuit realizes effective protection for the start motor in an automobile start/stop system and has advantages of quite high practical value and popularization value.
Description
Technical field
The utility model relates to a kind of protective circuit, specifically, relates to the protective circuit of a kind of automobile start (start and stop) motor.
Background technology
Engine start stop system is the automobile environment-protection technology that development in recent years is the swiftest and the most violent, the urban traffic situation that is specially adapted to loiter.Expect 2014, will have 30% outfit starting shutdown system in the car of new listing, the application of this cover system can be issued in city operating mode 15% fuel-economizing ability.Yet, vehicle loiters frequently has also had higher requirement to starting (start and stop) motor, the actuating motor of existing structure very easily causes main motor coil because excessive the causing of electric current opened circuit or short circuit under this operating mode, Magnetic sucking switch contact is also easily burnt or is bonding, greatly reduces the useful life of actuating motor.
Utility model content
The purpose of this utility model is to provide a kind of automobile start (start and stop) motor protective circuit; mainly solve starting (start and stop) motor existing in prior art easily causes main motor coil because electric current is excessive, to open circuit or short circuit under the operating mode of vehicle frequent start-stop; for switch contact, also easily burn or bonding, greatly reduced the problem in the useful life of motor.
To achieve these goals, the technical solution adopted in the utility model is as follows:
Automobile starting motor protective circuit; comprise the delay circuit that is parallel to motor start circuit two ends; be connected in the Magnetic sucking switch Ka between delay circuit and start and stop motor; described delay circuit comprises the voltage stabilizing circuit being positioned between itself and motor start circuit, and the drive circuit between itself and Magnetic sucking switch Ka.
Specifically, described delay circuit comprises delay chip IC1, source electrode is connected, drains by diode D1 and the anodal metal-oxide-semiconductor T1 being connected of motor start circuit with delay chip IC1, described drive circuit is connected between delay chip IC1 and metal-oxide-semiconductor T1, it comprises that base stage passes through that resistance R 3 is connected with delay chip IC1, collector electrode is by resistance R 2 and the anodal triode Q2 being connected of motor start circuit, the source electrode of described metal-oxide-semiconductor T1 is connected with the collector electrode of triode Q2, and described Magnetic sucking switch Ka is connected in diode D1 two ends.
Further, described voltage stabilizing circuit comprises that emitter is connected with delay chip IC1, collector electrode is connected with motor start circuit positive pole, base stage is passed through the triode Q1 of diode Z1 ground connection, be connected in collector electrode and the resistance R between base stage 1 of triode Q1, be connected in collector electrode and the capacitor C between ground 1 of triode Q1, be connected in base stage and the capacitor C between ground 2 of triode Q1, be connected in emitter and the capacitor C between ground 3 of triode Q1.
Compared with prior art, the utlity model has following beneficial effect:
(1) in the utility model; between automobile starting switch and starting (start and stop) motor, delay circuit and Magnetic sucking switch are set; thereby in automobile starting effective starting current size of controlling motor of moment; and then effectively realized the protection to start and stop motor; effectively avoided, because start and stop immediate current is excessive, start and stop motor is caused to damage; and reduce the arcing phenomenon of Magnetic sucking switch contact, realistic demand.
(2) in the utility model; circuit design is very ingenious; use less components and parts to realize the protection to automobile starting motor; integrated its stability when work that makes of voltage stabilizing circuit and drive circuit is higher; longer service life; there is substantive distinguishing features and progress, be applicable to large-scale promotion application.
Accompanying drawing explanation
Fig. 1 is circuit block diagram of the present utility model.
Fig. 2 is the circuit theory diagrams of delay circuit in the utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail, and execution mode of the present utility model includes but not limited to the following example.
Embodiment
In order to solve starting (start and stop) motor existing in prior art, under the operating mode of vehicle frequent start-stop, easily cause main motor coil because electric current is excessive, to open circuit or short circuit, for switch contact, also easily burn or bonding, greatly reduced the problem in the useful life of motor.As shown in Figure 1, the utility model discloses a kind of automobile starting motor protective circuit, its role is to, starting effective control of moment size of current, thus protection starting (start and stop) motor and Magnetic sucking switch.
Motor is 0 at startup moment rotating speed, back-emf E (instead)=0, because armature resistance is very little, thereby very large by the electric current of armature, its value is open=U/R of I, this directly causes I to open than rated current large tens times, in order to address this problem, the utility model has increased delay circuit and Magnetic sucking switch between motor start circuit (generally consisting of automobile storage battery and ignition switch etc.) and starter motor, its operation principle is: starter starts moment, delay chip energising, at this moment Magnetic sucking switch is normally off, starter motor energising, start to rotate, wait for certain time length, after 20ms, delay chip output is controlled Magnetic sucking switch and is disconnected, motor utilizes remanent magnetism to be rotated further certain time length, as 100-120ms(is determined by Magnetic sucking switch self-characteristic) after, it is closed that Magnetic sucking switch is controlled in delay chip output, motor continues energising work.Practice draws: now, current of electric I=W/ (U*0.8), wherein W is power of motor, U is voltage, the 0.8th, power factor.So just realize the effective control to electric motor starting electric current, thereby protected starter motor and switch.
As shown in Figure 2, this delay circuit comprises delay chip IC1, emitter is connected with delay chip IC1, collector electrode is connected with motor start circuit is anodal, base stage is by the triode Q1 of diode Z1 ground connection, be connected in collector electrode and the resistance R between base stage 1 of triode Q1, be connected in collector electrode and the capacitor C between ground 1 of triode Q1, be connected in base stage and the capacitor C between ground 2 of triode Q1, be connected in emitter and the capacitor C between ground 3 of triode Q1, base stage is connected with delay chip IC1 by resistance R 3, collector electrode is by the anodal triode Q2 being connected of resistance R 2 and motor start circuit, source electrode is connected with the collector electrode of triode Q2, drain electrode is by diode D1 and the anodal metal-oxide-semiconductor T1 being connected of motor start circuit, Magnetic sucking switch Ka is connected in diode D1 two ends.
The operation principle of this circuit is as follows:
AB termination magnetic pole switch coil two ends, power supply is from the input of AC end, when AC termination enters voltage, T1 conducting during as 12V, in magnetic pole switch coil, there is electric current to flow through and produce magnetic field, make switch closed (disconnection), time delay certain time length, as delay chip IC1 output high level after 110ms makes triode Q1 conducting, metal-oxide-semiconductor T1 ends when grid voltage is less than 0.7V, magnetic pole switch disconnects (closure), and wherein resistance R 1, diode Z1, capacitor C 1, capacitor C 2, capacitor C 3 have formed voltage stabilizing circuit and power to delay chip IC1; Resistance R 3, triode Q2, resistance R 2 have formed metal-oxide-semiconductor drive circuit, and D1 is fly-wheel diode, and D2 is for preventing reverse power connection protection diode.
According to above-described embodiment, just can realize well the utility model.
Claims (3)
1. automobile starting motor protective circuit; it is characterized in that; comprise the delay circuit that is parallel to motor start circuit two ends; be connected in the Magnetic sucking switch Ka between delay circuit and start and stop motor; described delay circuit comprises the voltage stabilizing circuit being positioned between itself and motor start circuit, and the drive circuit between itself and Magnetic sucking switch Ka.
2. automobile starting motor protective circuit according to claim 1, it is characterized in that, described delay circuit comprises delay chip IC1, source electrode is connected with delay chip IC1, drain electrode is by diode D1 and the anodal metal-oxide-semiconductor T1 being connected of motor start circuit, described drive circuit is connected between delay chip IC1 and metal-oxide-semiconductor T1, it comprises that base stage passes through resistance R 3 and be connected with delay chip IC1, collector electrode is by the anodal triode Q2 being connected of resistance R 2 and motor start circuit, the source electrode of described metal-oxide-semiconductor T1 is connected with the collector electrode of triode Q2, described Magnetic sucking switch Ka is connected in diode D1 two ends.
3. automobile starting motor protective circuit according to claim 2; it is characterized in that; described voltage stabilizing circuit comprises that emitter is connected with delay chip IC1, collector electrode is connected with motor start circuit positive pole, base stage is passed through the triode Q1 of diode Z1 ground connection; be connected in collector electrode and the resistance R between base stage 1 of triode Q1; be connected in collector electrode and the capacitor C between ground 1 of triode Q1; be connected in base stage and the capacitor C between ground 2 of triode Q1, be connected in emitter and the capacitor C between ground 3 of triode Q1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420157209.4U CN203788195U (en) | 2014-04-02 | 2014-04-02 | Automobile start motor protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420157209.4U CN203788195U (en) | 2014-04-02 | 2014-04-02 | Automobile start motor protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203788195U true CN203788195U (en) | 2014-08-20 |
Family
ID=51324346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420157209.4U Expired - Fee Related CN203788195U (en) | 2014-04-02 | 2014-04-02 | Automobile start motor protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203788195U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107317540A (en) * | 2017-06-20 | 2017-11-03 | 东风神宇车辆有限公司 | Automobile high current electrical equipment start protection circuit |
| CN109672434A (en) * | 2018-12-24 | 2019-04-23 | 优数通（北京）科技有限公司 | A kind of automobile electronic controller supply voltage delay unlatching protection circuit |
-
2014
- 2014-04-02 CN CN201420157209.4U patent/CN203788195U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107317540A (en) * | 2017-06-20 | 2017-11-03 | 东风神宇车辆有限公司 | Automobile high current electrical equipment start protection circuit |
| CN109672434A (en) * | 2018-12-24 | 2019-04-23 | 优数通（北京）科技有限公司 | A kind of automobile electronic controller supply voltage delay unlatching protection circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140820 Termination date: 20170402 |