CN201011705Y - Brushless DC motor circuit for preventing power supply reverse connection - Google Patents
Brushless DC motor circuit for preventing power supply reverse connection Download PDFInfo
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- CN201011705Y CN201011705Y CNU2006201412457U CN200620141245U CN201011705Y CN 201011705 Y CN201011705 Y CN 201011705Y CN U2006201412457 U CNU2006201412457 U CN U2006201412457U CN 200620141245 U CN200620141245 U CN 200620141245U CN 201011705 Y CN201011705 Y CN 201011705Y
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- power supply
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Abstract
The utility model discloses a power supply reverse connection preventing circuit of a brushless DC motor. Wherein, a protecting circuit consists of a diode of a main loop, a diode of a warning branch circuit and an alarm. The anode of the diode for the main loop is connected with the cathode of the diode for the warning branch circuit, and further jointly connected with the anode of the power supply. The cathode of the diode for the main loop is connected with the anode of a controller. The anode of the diode for the warning branch circuit is connected with the cathode of the alarm, the anode of which is connected with the cathode of the controller and further jointly connected with the cathode of the power supply. The utility model effectively disposes the problems that the internal fuse of the electric motor can be burnt when the power supply of brushless electric motor is reversely connected, with the replacement of the burnt fuse is time consuming and laborious. In addition, the alarmed signal sent by the alarm informs the reason why motor does not work. The utility model thus disposes the problem that operators need to laboriously find out the fault positions. The circuit structure is simple and the cost is low, therefore, the utility model can be used not only in the brushless DC motor but also other devices with DC current power supply.
Description
Technical field
The utility model relates to the anti-external power reverse-connection protection circuit of direct current supply, and especially a kind of brshless DC motor is prevented power supply reversal connection circuit.
Background technology
The equipment of direct current supply is different with the equipment of Alternating Current Power Supply, and the polarity of power supply does not allow reversal connection usually, but exists the possibility of power supply reversal connection in the actual use.At present, install fuse additional in most of brshless DC motor employing machines and prevent the power supply reversal connection, when the power supply reversal connection, blown fuse has protected motor not to be damaged, and need open motor but change fuse, and is not only time-consuming but also require great effort.Simultaneously, cause motor not worked after the blown fuse in the motor, need effort to go to seek the position of the system failure, not only influence is produced, and has also wasted the great amount of manpower resource.Chinese invention patent (CN200410000346.8) discloses a kind of motor in electric automobile driving control system major loop reverse-connection protection circuit, has adopted the circuit form with relay control major loop break-make, is applicable to the occasion of big electric current; Another patent (CN03232232.1) discloses a kind of circuit that is used for the anti-external power error-polarity connection of direct current supply, has adopted the circuit form of four diode bridge rectifications, and the voltage drop on the diode is bigger, is applicable to the occasion of little electric current.
Summary of the invention
The utility model connects and burns the motor internal fuse inverse time for solving at present a lot of brshless DC motor power supplys, changes the problem that fuse wastes time and energy and provides a kind of brshless DC motor to prevent power supply reversal connection circuit.
The utility model is to reach the technical scheme that above-mentioned technical purpose adopts to be: input protection circuit is made up of major loop diode, warning bypass diodes and alarm; the positive pole of major loop diode and the negative pole of warning bypass diodes are connected and connect the positive pole of power supply; the negative pole of major loop diode is connected with the anode of controller; the positive pole of warning bypass diodes is connected with the negative terminal of alarm, and the anode of alarm and the negative terminal of controller are connected and connect the negative pole of power supply.The model of major loop diode determines that according to the operating voltage and the current conditions of motor the warning bypass diodes is selected according to the operating current of supply voltage and alarm.Alarm can be buzzer, luminescent device or the combination of the two.The operating voltage of alarm is selected according to the operating voltage of motor, when the operating voltage of alarm is lower than the operating voltage of motor, can take to be connected in series step-down measures such as voltage stabilizing didoe, resistance in the warning branch road.Power supply connects when correct, the major loop diode current flow, and controller and direct current machine operate as normal, the warning bypass diodes is ended, and alarm is not worked; During the power supply reversal connection, the major loop diode ends, and controller and direct current machine are not worked, the conducting of warning bypass diodes, and alarm work sends alarm signal.Like this, not only solved, need open motor, the problem of both time-consuming also effort and change fuse because electric power polarity connects the anti-ballistic blown fuse in the machine of sending a telegraph; The alarm signal that the while alarm sends has clearly been informed the idle reason of motor, also solved in the motor to cause motor not worked after the blown fuse, and the problem that needs effort to go to the trouble-shooting place.
A kind of variation scheme as such scheme, it also can be the positive pole that the negative terminal of the positive pole of major loop diode and alarm is connected and connects power supply that circuit connects, the negative pole of major loop diode is connected with the anode of controller, the anode of alarm is connected with the negative pole of warning bypass diodes, and the positive pole of warning bypass diodes and the negative terminal of controller are connected and connect the negative pole of power supply.This scheme is the same with aforementioned schemes, can realize same goal of the invention.
The utility model also can be by the following technical solutions: input protection circuit is made up of major loop diode, warning bypass diodes and alarm; the negative pole of warning bypass diodes and the anode of controller are connected and connect the positive pole of power supply; the positive pole of warning bypass diodes is connected with the negative terminal of alarm; the anode of alarm and the negative pole of major loop diode are connected and connect the negative pole of power supply, and the positive pole of major loop diode is connected with the negative terminal of controller.The operation principle of this scheme, device selection and effect and first kind of scheme of producing are in full accord, are two kinds of different circuit connecting modes of same inventive concept.
In like manner, technique scheme is the same with first kind of technical scheme, the variation scheme that exists the position of alarm and alarm bypass diodes to exchange, and this scheme can realize the present utility model purpose equally.
The beneficial effects of the utility model are: it has solved at present a lot of brshless DC motor power supplys effectively and has connect and burn the motor internal fuse inverse time, changes the problem that fuse is wasted time and energy; The alarm signal that the while alarm sends has clearly been informed the idle reason of motor, also solved in the motor to cause motor not worked after the blown fuse, and the problem that needs effort to go to the trouble-shooting place.This line construction is simple, and it is convenient, with low cost to implement, and not only can be used for brshless DC motor, also is applicable to the equipment of other direct current supplys.
Description of drawings
Below in conjunction with accompanying drawing embodiment of the present utility model is further described.
Accompanying drawing 1 is a kind of circuit diagram of the anti-power supply reversal connection circuit of the utility model brshless DC motor.
Accompanying drawing 2 is another kind of circuit diagrams of the anti-power supply reversal connection circuit of the utility model brshless DC motor.
Accompanying drawing 3 is the third circuit diagrams of the anti-power supply reversal connection circuit of the utility model brshless DC motor.
Accompanying drawing 4 is the 4th kind of circuit diagrams of the anti-power supply reversal connection circuit of the utility model brshless DC motor.
Embodiment
In embodiment one as shown in Figure 1; input protection circuit is made up of major loop diode VD1, warning bypass diodes VD2 and alarm A2; the positive pole of major loop diode VD1 and the negative pole of warning bypass diodes VD2 are connected and connect the positive pole of power supply; the negative pole of major loop diode VD1 is connected with the anode of controller A1; the positive pole of warning bypass diodes VD2 is connected with the negative terminal of alarm A2, and the anode of alarm A2 and the negative terminal of controller A1 are connected and connect the negative pole of power supply.The model of major loop diode determines that according to the operating voltage and the current conditions of motor the warning bypass diodes is selected according to the operating current of supply voltage and alarm.Alarm can be buzzer, luminescent device or the combination of the two.The operating voltage of alarm is selected according to the operating voltage of motor, when the operating voltage of alarm is lower than the operating voltage of motor, can take to be connected in series step-down measures such as voltage stabilizing didoe, resistance in the warning branch road.When power supply is just connecing, diode VD1 conducting, controller A1 and direct current machine operate as normal, diode VD2 ends, alarm A2 does not work, and during the power supply reversal connection, diode VD1 ends, controller A1 and direct current machine are not worked, diode VD2 conducting, and alarm signal is sent in alarm A2 work.
In embodiment two as shown in Figure 2; input protection circuit is made up of major loop diode VD1, warning bypass diodes VD2 and alarm A2; the negative pole of warning bypass diodes VD2 and the anode of controller A1 are connected and connect the positive pole of power supply; the positive pole of warning bypass diodes VD2 is connected with the negative terminal of alarm A2; the anode of alarm A2 and the negative pole of major loop diode VD1 are connected and connect the negative pole of power supply, and the positive pole of major loop diode VD1 is connected with the negative terminal of controller A1.All the other are identical with embodiment one.
In embodiment three as shown in Figure 3; input protection circuit is made up of major loop diode VD1, warning bypass diodes VD2 and alarm A2; the positive pole of major loop diode VD1 and the negative terminal of alarm A2 are connected and connect the positive pole of power supply; the negative pole of major loop diode VD1 is connected with the anode of controller A1; the anode of alarm A2 is connected with the negative pole of warning bypass diodes VD2, and the positive pole of warning bypass diodes VD2 and the negative terminal of controller A1 are connected and connect the negative pole of power supply.All the other are identical with embodiment one.
In embodiment four as shown in Figure 4; input protection circuit is made up of major loop diode VD1, warning bypass diodes VD2 and alarm A2; the negative terminal of alarm A2 and the anode of controller A1 are connected and connect the positive pole of power supply; the anode of alarm A2 is connected with the negative pole of warning bypass diodes VD2; the positive pole of warning bypass diodes VD2 and the negative pole of major loop diode VD1 are connected and connect the negative pole of power supply, and the positive pole of major loop diode VD1 is connected with the negative terminal of controller A1.All the other are identical with embodiment one.
Above-mentioned four kinds of embodiments have all solved because electric power polarity connects the anti-ballistic blown fuse in the machine of sending a telegraph, and need open motor, the problem of both time-consuming also effort and change fuse; The alarm signal that the while alarm sends has clearly been informed the idle reason of motor, also solved in the motor to cause motor not worked after the blown fuse, and the problem that needs effort to go to the trouble-shooting place.
Claims (10)
1. a brshless DC motor is prevented power supply reversal connection circuit; by input protection circuit; controller and the direct current machine composition that is linked in sequence; it is characterized in that: described input protection circuit is by major loop diode (VD1); warning bypass diodes (VD2) and alarm (A2) are formed; the positive pole of major loop diode (VD1) and the negative pole of warning bypass diodes (VD2) are connected and connect the positive pole of power supply; the negative pole of major loop diode (VD1) is connected with the anode of controller (A1); the positive pole of warning bypass diodes (VD2) is connected with the negative terminal of alarm (A2), and the anode of alarm (A2) and the negative terminal of controller (A1) are connected and connect the negative pole of power supply.
2. brshless DC motor according to claim 1 is prevented power supply reversal connection circuit, it is characterized in that: the positive pole of described major loop diode (VD1) and the negative terminal of alarm (A2) are connected and connect the positive pole of power supply, the negative pole of major loop diode (VD1) is connected with the anode of controller (A1), the anode of alarm (A2) is connected with the negative pole of warning bypass diodes (VD2), and the positive pole of warning bypass diodes (VD2) and the negative terminal of controller (A1) are connected and connect the negative pole of power supply.
3. brshless DC motor according to claim 1 and 2 is prevented power supply reversal connection circuit, it is characterized in that: described alarm (A2) is a buzzer.
4. brshless DC motor according to claim 1 and 2 is prevented power supply reversal connection circuit, it is characterized in that: described alarm (A2) is a luminescent device.
5. brshless DC motor according to claim 1 and 2 is prevented power supply reversal connection circuit, it is characterized in that: described alarm (A2) is the combination of buzzer and luminescent device.
6. a brshless DC motor is prevented power supply reversal connection circuit; by input protection circuit; controller and the direct current machine composition that is linked in sequence; it is characterized in that: described input protection circuit is by major loop diode (VD1); warning bypass diodes (VD2) and alarm (A2) are formed; the negative pole of warning bypass diodes (VD2) and the anode of controller (A1) are connected and connect the positive pole of power supply; the positive pole of warning bypass diodes (VD2) is connected with the negative terminal of alarm (A2); the anode of alarm (A2) and the negative pole of major loop diode (VD1) are connected and connect the negative pole of power supply, and the positive pole of major loop diode (VD1) is connected with the negative terminal of controller (A1).
7. brshless DC motor according to claim 6 is prevented power supply reversal connection circuit, it is characterized in that: the negative terminal of described alarm (A2) and the anode of controller (A1) are connected and connect the positive pole of power supply, the anode of alarm (A2) is connected with the negative pole of warning bypass diodes (VD2), the positive pole of warning bypass diodes (VD2) and the negative pole of major loop diode (VD1) are connected and connect the negative pole of power supply, and the positive pole of major loop diode (VD1) is connected with the negative terminal of controller (A1).
8. according to claim 6 or the anti-power supply reversal connection circuit of 7 described brshless DC motors, it is characterized in that: described alarm (A2) is a buzzer.
9. according to claim 6 or the anti-power supply reversal connection circuit of 7 described brshless DC motors, it is characterized in that: described alarm (A2) is a luminescent device.
10. according to claim 6 or the anti-power supply reversal connection circuit of 7 described brshless DC motors, it is characterized in that: described alarm (A2) is the combination of buzzer and luminescent device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201412457U CN201011705Y (en) | 2006-12-20 | 2006-12-20 | Brushless DC motor circuit for preventing power supply reverse connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201412457U CN201011705Y (en) | 2006-12-20 | 2006-12-20 | Brushless DC motor circuit for preventing power supply reverse connection |
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| Publication Number | Publication Date |
|---|---|
| CN201011705Y true CN201011705Y (en) | 2008-01-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201412457U Expired - Fee Related CN201011705Y (en) | 2006-12-20 | 2006-12-20 | Brushless DC motor circuit for preventing power supply reverse connection |
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| CN (1) | CN201011705Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664575A (en) * | 2012-05-09 | 2012-09-12 | 上海日用-友捷汽车电气有限公司 | Three-phase half-wave brushless direct-current motor controller with reverse connection protection function |
| CN103337849A (en) * | 2013-06-25 | 2013-10-02 | 西安电子科技大学 | Power source reverse connection protection circuit |
| CN103346553A (en) * | 2013-07-09 | 2013-10-09 | 镇江恒驰科技有限公司 | Reverse-connection-resisting and relay-coil-short-circuit-resisting control circuit of electronic controller |
| CN112133243A (en) * | 2020-09-03 | 2020-12-25 | 四川遂宁市利普芯微电子有限公司 | Display device capable of preventing reverse connection breakdown of power supply |
-
2006
- 2006-12-20 CN CNU2006201412457U patent/CN201011705Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664575A (en) * | 2012-05-09 | 2012-09-12 | 上海日用-友捷汽车电气有限公司 | Three-phase half-wave brushless direct-current motor controller with reverse connection protection function |
| CN103337849A (en) * | 2013-06-25 | 2013-10-02 | 西安电子科技大学 | Power source reverse connection protection circuit |
| CN103346553A (en) * | 2013-07-09 | 2013-10-09 | 镇江恒驰科技有限公司 | Reverse-connection-resisting and relay-coil-short-circuit-resisting control circuit of electronic controller |
| CN103346553B (en) * | 2013-07-09 | 2015-10-21 | 镇江恒驰科技有限公司 | Anti-reverse and the anti-relay coil short-circuit control circuit of a kind of electronic controller |
| CN112133243A (en) * | 2020-09-03 | 2020-12-25 | 四川遂宁市利普芯微电子有限公司 | Display device capable of preventing reverse connection breakdown of power supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080123 Termination date: 20101220 |