CN204677351U - For the protector of starter motor - Google Patents
For the protector of starter motor Download PDFInfo
- Publication number
- CN204677351U CN204677351U CN201520401961.3U CN201520401961U CN204677351U CN 204677351 U CN204677351 U CN 204677351U CN 201520401961 U CN201520401961 U CN 201520401961U CN 204677351 U CN204677351 U CN 204677351U
- Authority
- CN
- China
- Prior art keywords
- sampling unit
- protector
- starter motor
- starter
- voltage signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model discloses a kind of protector for starter motor, it is characterized in that, comprising: one first sampling unit, and this first sampling unit is for gathering the voltage signal of the power supply of this starter motor; One second sampling unit, this second sampling unit is for gathering the voltage signal of the switch starter of this starter motor; One control unit, this control unit connects this first sampling unit and this second sampling unit, when the voltage signal of the switch starter that this first sampling unit gathers is effective, this control unit is according to the voltage signal conducting of the power supply of this second sampling unit collection or turn off a switching tube to control the relay unlatching of this starter motor or to close.
Description
Technical field
The utility model relates to the starter motor technical field of motor car engine and other motor, particularly relates to a kind of protector for starter motor.
Background technique
Commercial Vehicular starter fault statistics data display, commercial car fault starter motor uses caused the ratio of cause thermal damage generally to account for first 3 of all defective proportion owing to exceeding the national Specification time.
In commercial Vehicular starter using process, sometimes motor has started successfully, but driver does not loosen key operation in time, or there is electric adhesion in the switch contact in start control circuit, such starter motor would not quit work automatically, starter motor can run surmounting under operating mode together with motor, starter motor runs in the overrunning mode for a long time or repeatedly, the overrunning clutch internal friction part of starter motor and bearing, actuation gear tooth bar meeting Fast Wearing, starter driving shaft and its bearing of supporting also can accelerated wear tests, starter motor is caused to occur disabler too early.
For slow engagement type starter motor, during starter motor work, occasional runs into starter gear and engine flywheel gear ring tooth is lived tooth top and do not realize engagement, be called tooth butt condition, the electric current that the magnetic switch delaying engagement type starter motor due to present use for diesel engine consumes at tooth butt condition is at about 200A, if under tooth butt condition, when frequent apical tooth fault occurs, magnetic switch winding very easily burns because of overheated starter motor more than 5s the operating time at every turn.
When vehicle or motor normally run, starter circuit capable is in turnoff state, there is starter motor misoperation under abnormal activating signal in occasional, abnormal activating signal may come from driver and not identify motor and run, again be energized to starter motor, also electric short circuit or control unit conducting failure in short-term that Vehicular vibration causes may be come from, if engine operation starter motor task again, then starter driving gear meeting preshoot is to the flywheel ring gear of High Rotation Speed, and then cause starter gear impaired because intense mechanical is clashed into the engine ring gear run up.
Prior art; shown in technology contents disclosed in " design of NXP P89LPC901 single-chip microcomputer vehicle starting protection controller "; this technological scheme, by detecting switch starter and transmission neutral switch, realizes vehicle starting protection by sensor to the mode that engine speed is sampled simultaneously.The shortcoming of this technological scheme is to have set up speed probe device, too increases failure mode while increasing cost.In addition this technological scheme can only realize normal starting, non-neutral gear start protection, key operation can not return protection and re-lighting protection, cannot realize apical tooth protection.
Model utility content
In order to overcome the defect existed in prior art, the purpose of this utility model is to provide a kind of starter motor protector that effectively can solve commercial car starter motor rate of fault high technology problem.
In order to realize above-mentioned model utility object, the utility model discloses a kind of protector for starter motor, it is characterized in that, comprising: one first sampling unit, and this first sampling unit is for gathering the voltage signal of the power supply of this starter motor; One second sampling unit, this second sampling unit is for gathering the voltage signal of the switch starter of this starter motor; One control unit, this control unit connects this first sampling unit and this second sampling unit, when the voltage signal of the switch starter that this first sampling unit gathers is effective, this control unit is according to the voltage signal conducting of the power supply of this second sampling unit collection or turn off a switching tube to control the relay unlatching of this starter motor or to close.
Further, this protector also comprises a timing unit, and this timing unit is connected with this second sampling unit, when the switch starter of this second sampling unit collection voltage signal effectively and when reaching a limiting time, this control unit turns off this switching tube.
Further, the voltage signal of the switch starter of this second sampling unit collection is effective and when reaching 12 seconds working lipe, this control unit turns off this switching tube, to realize the protection in limited time to this starter motor.
Further, when the voltage signal of the switch starter of this second sampling unit collection is effective, this timing unit starts timing, when meeting the following conditions: in 0.5 second, V rises to be more than or equal to 0.9Ve and V is greater than the 0.9Ve endurance is more than or equal to 1 second from being less than or equal to 2/3Ve, V is the voltage signal of the switch starter that this second sampling unit gathers, and Ve is the voltage rating of vehicle; This control unit turns off this switching tube, to realize the overreach protection to this starter motor.
Further; when the voltage signal of the switch starter of this second sampling unit collection did not drop to 2/3Ve and be not all down to 2/3Ve in 0.5 second; this control unit turns off this switching tube, and to realize protecting the apical tooth of this starter motor, Ve is the voltage rating of vehicle.
Further, when the voltage signal of the switch starter of this second sampling unit collection is greater than 1.1Ve, this control unit turns off this switching tube, and to realize the fault-operation protection to this starter motor, Ve is the voltage rating of vehicle.
Further, this switching tube is PMOS or NMOS tube.
Further, this first sampling unit comprises a divider resistance and the Zener diode in parallel with this divider resistance.
Compared with prior art; starter motor protector provided by the utility model effectively can reduce the high technical problem of the starter motor rate of fault of commercial car; with the voltage real-time sampling crossed starter switch, protection in limited time, overreach protection, apical tooth protection and fault-operation protection can be realized simultaneously.Therefore protector provided by the utility model can the starter motor rate of fault of minimizing car, increases the working life of starter motor.
Starter motor protector provided by the utility model is directly connected with 30 terminals original in magnetic switch and 50 terminals, does not need extra tenminal block, installs and use all not change the original starting system circuit of car load.Therefore the protector that the utility model provides has the simple advantage of the low assembling of cost.
Accompanying drawing explanation
Can to be described in detail by following model utility and institute's accompanying drawings is further understood about advantage of the present utility model and spirit.
Fig. 1 is the structural representation of the starter motor that the utility model relates to;
Fig. 2 is the structural representation of the protector of the starter motor that the utility model relates to.
Embodiment
Specific embodiment of the utility model is described in detail below in conjunction with accompanying drawing.
The purpose of this utility model is to provide the technological scheme that a kind of starter motor rate of fault that effectively can reduce commercial car is high, simultaneously to the voltage real-time sampling of starter switch, can realize protection in limited time simultaneously, overreach protection, apical tooth protect and fault-operation protection.
Fig. 1 is the structural representation of the starter motor that the utility model relates to; as shown in Figure 1, starter motor comprises motor 1, storage battery 2, starting button 10, T30 terminal, T50 terminal, relay 7, protector 5, magnetic switch 9, M terminal 8, starter motor 6, actuation gear 3 and flywheel ring gear 4.Closed starting button 10, when being in closed state, electric current flows through magnetic switch 9 from storage battery 2, the actuation gear 3 that the electromagnetic force that magnetic switch 9 produces promotes starter motor moves linearly along own axes to engine flywheel gear ring 4, meanwhile, the electric current flowing to starter motor internal main circuit by electromagnetic switch circuit impels actuation gear 3 slow circumvolve.
Under normal circumstances, actuation gear 3 and flywheel ring gear 4 can normally engage, magnetic switch 9 contact conducting after engagement, and starter motor exports moment of torsion in full and rotating speed, drive motor 1 to rotate.When tooth occurs for starter driving gear 3 and engine flywheel gear ring 4, tooth top is lived, and when stopping mobile and rotation, be tooth butt condition.During apical tooth, magnetic switch 9 contact can not be connected, and starter motor can not maximum output torque, but the electric current of magnetic switch consumption and the speed that produces heat are all in maximum value.Protector 5 provided by the utility model is opened or is closed by processing the voltage signal of T30 terminal with control relay 7 with relay 7.
Fig. 2 is the structural representation of the protector of the starter motor that the utility model relates to.As shown in Figure 2, protector provided by the utility model can realize protection in limited time, overreach protection, apical tooth protect and the protection of fault-operation protection four kinds of modes.
This protector 5 at least comprises two sampling modules, and one of them sampling module 54 is connected with T50 terminal.When switch starter 10 closes, electric current flows through switch starter 10 from power supply 2, and sampling module 54 collects useful signal.Another sampling module 52 is connected with T30 terminal, gathers the voltage signal of power supply 2.Power module 51 is for by the voltage transitions from power supply 2 being the voltage for control module 55.The control module that the utility model adopts can be a single-chip microcomputer, and this single-chip microcomputer comprises a timing module 53.Protector working method provided by the utility model is as follows:
When the starter motor single operating time reaches a limit value, protector disconnects cranking-motor relay circuit automatically by inner single-chip microcomputer clocking capability and metal-oxide-semiconductor in limited time, makes starter motor out of service, realizes start protection function in limited time.
After engine ignition, protector is by inner voltage sampling circuit, inner single-chip microcomputer recording voltage value in limited time, and judges the change procedure type of voltage in conjunction with timing.Cut-off switch pipe 56 is judged whether according to the change procedure of voltage.If light a fire successfully, in 2s, metal-oxide-semiconductor disconnects cranking-motor relay coil circuit automatically, makes starter motor out of service, prevents starter motor to be instead with impaired by the engine long time, realizes overreach protection function.
At the engine startup initial stage, when apical tooth fault occurs, protector judges the rate of change of voltage by inner voltage comparator circuit, inner single-chip microcomputer clocking capability in limited time, if in 2s, and V
30continue to be greater than 2/3Ve and the endurance more than after 0.5s, MOS end turns off by protector, and then disconnects cranking-motor relay circuit, and magnetic switch is quit work, and protection magnetic switch is not damaged because of overheated, realizes the apical tooth protective function to starter motor.
When motor normally runs; if starting system main circuit voltage is on a voltage rating; protector is by inner voltage comparator circuit and metal-oxide-semiconductor; starter circuit capable is kept to be in turnoff state; prevent starter motor misoperation under abnormal activating signal; and then cause starter gear impaired because intense mechanical is clashed into the engine ring gear run up, realize preventing misoperation starting machine function.In the whole startup of vehicle and driving conditions, protector singlechip chip Real-time Collection T30 terminal voltage, compares with each setting voltage value, and in conjunction with sequential, judges vehicle-state in limited time.In process, singlechip chip Real-time Collection T50 terminal voltage, compares with setting voltage value, judges whether vehicle ignition switch is pressed.Voltage sample pin by electric resistance partial pressure, and adds Zener diode protection, while meeting single-chip microcomputer input request signal, and the misoperation to starter motor when preventing engine work.
For example, below Ve is set as to the voltage rating of vehicle electrical systems, Ve=12V in general passenger car electrical system, Ve=24V in commercial car electrical system.
When the signal that sampling module 54 collects is effective, the built-in timing module 53 of protector starts timing, and when the starter motor single operating time arrives 12 seconds, switching tube 56 disconnects, and relay 7 circuit is disconnected, to realize protective function in limited time.
When the signal that sampling module 54 collects is effective, the built-in timing module 53 of protector starts timing, the voltage V of the storage battery that sampling module 52 collects by single-chip microcomputer
30compare with voltage rating Ve, if in 0.5 second, monitor V
30v is risen to from being less than (2/3) Ve
30be greater than 0.9Ve, and V
30be greater than after the 0.9Ve endurance reaches 1 second, switching tube turned off, realize vehicle launch process complete after overreach protection to starter motor.
In motor normal starting process, engage V successfully
30can from higher magnitude of voltage, drop to (2/3) Ve, if there is apical tooth, magnetic switch main contact can not be connected, and starter motor can not maximum output torque, and magnitude of voltage would not be down to (2/3) Ve.If single-chip microcomputer does not monitor voltage drop from sampling module 52 to (2/3) Ve, then on-off switching tube 56 after starting 0.5 second.If monitored the voltage drop of sampling module 52 to (2/3) Ve in 0.5 second, then stop on-off switching tube 56; If do not monitor the voltage drop of sampling module 52 to (2/3) Ve in 0.5 second; then switching tube 56 turns off, and disconnects cranking-motor relay coil circuit, magnetic switch is quit work; protection magnetic switch is not damaged because of overheated, realizes the apical tooth protective function to starter motor.
When the signal that sampling module 54 collects is effective, and V
30in 1.1 times of more than Ve (containing this value), on-off switching tube, starter circuit capable is kept to be in turnoff state, prevent starter motor misoperation under abnormal activating signal, and then cause starter gear impaired because intense mechanical is clashed into the engine ring gear run up, realize preventing misoperation starting machine function.
In a kind of mode of execution of the present utility model, single-chip microcomputer adopts the chip of MCUPIC12F675 model.Switching tube is NMOS tube or PMOS.
Compared with prior art; starter motor protector provided by the utility model effectively can reduce the high technical problem of the starter motor rate of fault of commercial car; with the voltage real-time sampling crossed starter switch, protection in limited time, overreach protection, apical tooth protection and fault-operation protection can be realized simultaneously.Therefore protector provided by the utility model can the rate of fault of minimizing Vehicular starter, increases the working life of starter motor.
Starter motor protector provided by the utility model is directly connected with original in magnetic switch " 30 " terminal and " 50 " terminal, does not need extra tenminal block, installs and use all not change the original starting system circuit of car load.Therefore the protector that the utility model provides has the simple advantage of the low assembling of cost.
Just preferred embodiment of the present utility model described in this specification, above embodiment is only in order to illustrate the technical solution of the utility model but not to restriction of the present utility model.All those skilled in the art comply with design of the present utility model by the available technological scheme of logical analysis, reasoning, or a limited experiment, all should within scope of the present utility model.
Claims (9)
1. for a protector for starter motor, it is characterized in that, comprising:
One first sampling unit, described first sampling unit is for gathering the voltage signal of the power supply of described starter motor;
One second sampling unit, described second sampling unit is for gathering the voltage signal of the switch starter of described starter motor;
One control unit, described control unit connects described first sampling unit and described second sampling unit, when the voltage signal of the switch starter that described first sampling unit gathers is effective, described control unit is according to the voltage signal conducting of the power supply of described second sampling unit collection or turn off a switching tube to control the relay unlatching of described starter motor or to close.
2. protector as claimed in claim 1; it is characterized in that; described protector also comprises a timing unit; described timing unit is connected with described second sampling unit; when the switch starter of described second sampling unit collection voltage signal effectively and when reaching a limiting time, described control unit turns off described switching tube.
3. protector as claimed in claim 2; it is characterized in that; the voltage signal of the switch starter of described second sampling unit collection effectively and working lipe reaches a Preset Time time, described control unit turns off described switching tube, to realize the protection in limited time to described starter motor.
4. protector as claimed in claim 3, it is characterized in that, described Preset Time is 12 seconds.
5. protector as claimed in claim 2, it is characterized in that, when the voltage signal of the switch starter of described second sampling unit collection is effective, described timing unit starts timing, when meeting the following conditions:
In 0.5 second, V rises to be more than or equal to 0.9Ve and V is greater than the 0.9Ve endurance is more than or equal to 1 second from being less than or equal to 2/3Ve, and V is the voltage signal of the switch starter that described second sampling unit gathers, and Ve is the voltage rating of vehicle;
Described control unit turns off described switching tube, to realize the overreach protection to described starter motor.
6. protector as claimed in claim 2; it is characterized in that; when the voltage signal of the switch starter of described second sampling unit collection did not drop to 2/3Ve and be not all down to 2/3Ve in 0.5 second; described control unit turns off described switching tube; to realize protecting the apical tooth of described starter motor, Ve is the voltage rating of vehicle.
7. protector as claimed in claim 1; it is characterized in that, when the voltage signal of the switch starter of described second sampling unit collection is greater than 1.1Ve, described control unit turns off described switching tube; to realize the fault-operation protection to described starter motor, Ve is the voltage rating of vehicle.
8. protector as claimed in claim 1, it is characterized in that, described switching tube is PMOS or NMOS tube.
9. protector as claimed in claim 1, it is characterized in that, described first sampling unit comprises a divider resistance and the Zener diode in parallel with described divider resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520401961.3U CN204677351U (en) | 2015-06-11 | 2015-06-11 | For the protector of starter motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520401961.3U CN204677351U (en) | 2015-06-11 | 2015-06-11 | For the protector of starter motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204677351U true CN204677351U (en) | 2015-09-30 |
Family
ID=54177047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520401961.3U Active CN204677351U (en) | 2015-06-11 | 2015-06-11 | For the protector of starter motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204677351U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109306929A (en) * | 2017-07-27 | 2019-02-05 | 徐工集团工程机械股份有限公司 | Starting method, engineering machinery and the vehicle of engine, engine |
| CN114876692A (en) * | 2022-04-12 | 2022-08-09 | 三一重机有限公司 | Protection method, device and circuit for starting motor and working machine |
-
2015
- 2015-06-11 CN CN201520401961.3U patent/CN204677351U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109306929A (en) * | 2017-07-27 | 2019-02-05 | 徐工集团工程机械股份有限公司 | Starting method, engineering machinery and the vehicle of engine, engine |
| CN114876692A (en) * | 2022-04-12 | 2022-08-09 | 三一重机有限公司 | Protection method, device and circuit for starting motor and working machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105003375A (en) | Protector used for starter | |
| CN107697003B (en) | Vehicle electrical system | |
| CN202851229U (en) | Intelligent protection device of starter of automobile | |
| JPH10184505A (en) | Starting device for internal combustion engine | |
| CN102733960B (en) | Start and stop device | |
| KR101233958B1 (en) | Engine starting device | |
| CN105510828A (en) | Automobile starting system durability test device and use method thereof | |
| CN105298709A (en) | Engine starting control system and control method | |
| CN204677351U (en) | For the protector of starter motor | |
| CN106526464B (en) | Fault detection method for series starter relay | |
| CN110360044A (en) | A kind of starter running protection control system and its control method and automobile | |
| US20120216634A1 (en) | Method for checking engagement of a pinion of a starter system | |
| US3993038A (en) | System for preventing drive train start of a motor vehicle internal combustion engine | |
| CN205117586U (en) | Starter control system | |
| CN104797809A (en) | Spherical band seal | |
| CN201802537U (en) | Control circuit of starter | |
| CN102749201B (en) | Engine test platform safety protection device | |
| CN208518806U (en) | A kind of engine starting protection device | |
| CN202117827U (en) | Vehicle starting circuit with protection circuit | |
| CN104579063A (en) | Delay control circuit for generator set and control method | |
| CN103348125B (en) | Run method and the starting system of starting system | |
| CN202797899U (en) | Protection device of vehicle starting motor | |
| CN209344957U (en) | Starter relay and the starter using the switch is controlled electronically | |
| CN203009136U (en) | Starting protection control system of engine | |
| CN208010500U (en) | A kind of automobile start circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |