CN202421460U - Motor locked-rotor detection device of vehicle - Google Patents
Motor locked-rotor detection device of vehicle Download PDFInfo
- Publication number
- CN202421460U CN202421460U CN2012200284813U CN201220028481U CN202421460U CN 202421460 U CN202421460 U CN 202421460U CN 2012200284813 U CN2012200284813 U CN 2012200284813U CN 201220028481 U CN201220028481 U CN 201220028481U CN 202421460 U CN202421460 U CN 202421460U
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- circuit
- voltage
- input
- amplifier circuit
- detection device
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Abstract
The utility model relates to a direct current motor control circuit of a vehicle; at least one voltage stabilizing diode is parallelly connected between the input end of a voltage amplifying circuit or an input circuit which is connected with the input end and a constant potential; the sum of the voltage stabilizing value of the voltage stabilizing diode and the constant potential is less than the limit voltage that the input end of the voltage amplifying circuit can withstand; and the positive pole (P area end) of the voltage stabilizing diode is electrically connected with the constant potential. According to the motor locked-rotor detection device of the vehicle, not only can the voltage amplifying circuit work normally but also the voltage amplifying circuit is protected against high-voltage damage.
Description
Technical field:
The utility model relates to car direct current motivation control circuit.
Background technology:
The applied more and more of direct current motor (hereinafter to be referred as motor) and control circuit thereof on the present automobile; And the input circuit of control circuit will directly be connected with the power lead of motor sometimes; Because the Electromagnetic Interference that electric spark causes produces the high voltage (electric current is very little) of more than 100 volts easily in feed circuit; Make IC punch through damage wherein easily after scurrying into the input circuit of control circuit, still do not have solution preferably at present.
Summary of the invention:
The purpose of the utility model is that a kind of motorcar electric motor rotation-blocking up detection device will be provided, and it can effectively protect the motor rotation blockage pick-up unit to avoid high-tension infringement.
The purpose of the utility model is achieved in that this device comprises that passing through input circuit by sampling end is electrically connected with the voltage amplifier circuit input end; The voltage amplifier circuit output terminal connects the motor rotation-blocking up detection device that constitutes to control circuit; During work; Sampling end is electrically connected with the DC circuit of motor; Voltage amplifier circuit connects WV, control circuit control machine operation circuit, the voltage amplifier circuit input end or with input circuit that input end is connected on constant potential between a parallelly connected at least voltage stabilizing diode; The limiting voltage that its voltage stabilizing value and constant potential sum can bear less than the voltage amplifier circuit input end, the positive pole of voltage stabilizing diode (P district end) is electrically connected with constant potential.
Owing to adopt such scheme, both protected integrated circuit to avoid the high voltage infringement, do not influence the integrated circuit operate as normal again.
Description of drawings:
Below in conjunction with accompanying drawing the utility model is further specified.
Fig. 1 is the circuit theory diagrams of first embodiment of the utility model.
Fig. 2 is the circuit theory diagrams of second embodiment of the utility model.
Fig. 3 is the circuit theory diagrams of the 3rd embodiment of the utility model.
Embodiment:
Among Fig. 1; Voltage amplifier circuit 5 is integrated circuit voltage amplifier circuit or other integrated circuit that contain voltage amplifier circuit, and sampling end 2 (sampling end 2 is input ends of input circuit 3) is electrically connected with the input end 4 of voltage amplifier circuit 5 through input circuit 3, and the output terminal 6 of voltage amplifier circuit 5 is connected with control circuit 7; Thereby constitute the motor rotation blockage control circuit; Sampling end 2 is connected with the power lead of motor 1, is parallel with voltage stabilizing diode 8 between sampling end 2 and the ground wire, its plus earth.During motor car engine work, battery tension reaches 17V sometimes, so the voltage stabilizing value of voltage stabilizing diode 8 is selected about 20V; Power is 1W; When high voltage was scurried into sampling end 2, voltage stabilizing diode 8 remained on about 20v the voltage of sampling end 2, thereby made integrated circuit avoid infringement.
The negative pole of voltage stabilizing diode 8 also can be electrically connected with input end 4, also can be connected on the input circuit 3.Also can be between sampling end 2 and ground and input end 4 and ground between parallelly connected two voltage stabilizing diodes simultaneously.
Among Fig. 2; Voltage amplifier circuit 5 is integrated circuit voltage comparator or other integrated circuit that contain voltage comparator; Sampling end 2-1 is electrically connected with the inverting input 4-1 of voltage comparator 5 through input circuit 3-1, and sampling end 2-2 is electrically connected with the normal phase input end 4-2 of voltage comparator 5 through input circuit 3-2, and the output terminal 6 of voltage comparator 5 is electrically connected with control circuit 7; Thereby constitute the motor rotation blockage control circuit; Two sampling end 2-1 and 2-2 are electrically connected with the power lead of motor 1 respectively, and R1 is the little resistance resistance that is connected on the motor power-supply wire, between the two input end 4-1 and 4-2 and ground wire of voltage comparator 5; Be parallel with voltage stabilizing diode 8-1 and 8-2 respectively, its plus earth.
By the stabilized voltage supply power supply, then voltage stabilizing diode 8-3 can save like voltage comparator 5.
Among Fig. 3, input circuit 3-1,3-2 are made up of the resistance of differentiating circuit and output terminal series connection thereof, among the input circuit 3-1, are parallel with voltage stabilizing diode 8-1 between differentiating circuit output terminal and the ground wire, its plus earth; Among the input circuit 3-2, be parallel with voltage stabilizing diode 8-2 between differentiating circuit output terminal and the ground wire, its plus earth.
Claims (5)
1. motorcar electric motor rotation-blocking up detection device; Comprise by sampling end (2) and being electrically connected with voltage amplifier circuit input end (4) through input circuit (3); Voltage amplifier circuit output terminal (6) connects the motor rotation-blocking up detection device that constitutes to control circuit (7); During work, sampling end (2) is electrically connected with the DC circuit of motor (1), and voltage amplifier circuit (5) connects WV; Control circuit (7) control machine operation circuit; It is characterized in that: voltage amplifier circuit (5) input end (4) or the input circuit (3) that is connected with input end (4) go up with constant potential between a parallelly connected at least voltage stabilizing diode (8), the limiting voltage that its voltage stabilizing value and constant potential sum can bear less than voltage amplifier circuit input end (4), the positive pole of voltage stabilizing diode (8) (P district end) is electrically connected with constant potential.
2. motorcar electric motor rotation-blocking up detection device according to claim 1 is characterized in that: be parallel with voltage stabilizing diode 8 between sampling end (2) and the ground wire, its plus earth.
3. motorcar electric motor rotation-blocking up detection device according to claim 1 is characterized in that: two input ends of voltage comparator (5) (4-1,4-2) and between the ground wire, be parallel with respectively voltage stabilizing diode (8-1,8-2), its plus earth.
4. motorcar electric motor rotation-blocking up detection device according to claim 1; It is characterized in that: be connected in the input circuit (3-1) of voltage amplifier circuit (5) inverting input (4-1); Be parallel with voltage stabilizing diode (8-1) between differentiating circuit output terminal and the ground wire, its plus earth is connected in the input circuit (3-2) of voltage amplifier circuit (5) normal phase input end (4-1); Be parallel with voltage stabilizing diode (8-2) between differentiating circuit output terminal and the ground wire, its plus earth.
5. motorcar electric motor rotation-blocking up detection device according to claim 1 is characterized in that: said voltage amplifier circuit (5) is for integrated circuit voltage amplifier circuit or integrated circuit voltage comparator or contain voltage amplifier circuit or other integrated circuit of voltage comparator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200284813U CN202421460U (en) | 2012-01-19 | 2012-01-19 | Motor locked-rotor detection device of vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200284813U CN202421460U (en) | 2012-01-19 | 2012-01-19 | Motor locked-rotor detection device of vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202421460U true CN202421460U (en) | 2012-09-05 |
Family
ID=46746212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200284813U Expired - Fee Related CN202421460U (en) | 2012-01-19 | 2012-01-19 | Motor locked-rotor detection device of vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202421460U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344916A (en) * | 2013-06-28 | 2013-10-09 | 江苏浩峰汽车附件有限公司 | Motor stalling detection method |
| CN109856537A (en) * | 2018-12-28 | 2019-06-07 | 神驰机电股份有限公司 | A kind of the stall detection method and system of the BLDC control circuit of list comparator |
-
2012
- 2012-01-19 CN CN2012200284813U patent/CN202421460U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344916A (en) * | 2013-06-28 | 2013-10-09 | 江苏浩峰汽车附件有限公司 | Motor stalling detection method |
| CN103344916B (en) * | 2013-06-28 | 2015-09-09 | 江苏浩峰汽车附件有限公司 | Motor rotation blockage detection method |
| CN109856537A (en) * | 2018-12-28 | 2019-06-07 | 神驰机电股份有限公司 | A kind of the stall detection method and system of the BLDC control circuit of list comparator |
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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 |
Granted publication date: 20120905 Termination date: 20130119 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |