CN204967224U - A circuit protection device for electric motor car - Google Patents
A circuit protection device for electric motor car Download PDFInfo
- Publication number
- CN204967224U CN204967224U CN201520767108.3U CN201520767108U CN204967224U CN 204967224 U CN204967224 U CN 204967224U CN 201520767108 U CN201520767108 U CN 201520767108U CN 204967224 U CN204967224 U CN 204967224U
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- China
- Prior art keywords
- circuit
- current
- strong
- electric current
- weak detector
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Abstract
The utility model discloses a circuit protection device for electric motor car, including current feedback signal, opto -coupler and drive circuit, the strong and weak detector of electric current, opto -coupler and drive circuit are installed to the strong and weak detector end of electric current, opto -coupler and drive circuit upper end are setting up the strong and weak detector of electric current, current input is being wrapped up to the strong and weak detector outside of electric current, current foldback circuit is being inlayed to the current input terminal surface, current foldback circuit passes through the start control button and is connecting starting circuit, the starting circuit lower extreme is setting up permanent magnetism direct current motor, short -circuit protection circuit is installed to the outer terminal surface of permanent magnetism direct current motor, the short -circuit protection circuit terminal surface is connected with automatic power opening device, the inside current output terminal that is setting up of automatic power opening device. The utility model discloses simple structure, simple, the convenient to use of design effectually combine production actual the 3D glasses, have realized letting most of people normal use, and manufacturing cost is lower moreover, is fit for the application and promotes.
Description
Technical field
The utility model belongs to electric circuit protection equipment field, is specifically related to a kind of circuit protection device for electric motor car.
Background technology
At present, China's electric circuit protection equipment industry development is rapid, and the equipment for circuit protection is also varied, but is still faced with very many-sided challenge, and demand finds the solution meeting client.Application number: the Chinese patent literature of 201420326953.2 reports a kind of protective device, and particular content is: the utility model relates to a kind of protective device, especially a kind of electric motor car overcurrent protective device, belongs to the technical field of electric motor car protection.According to the technical scheme that the utility model provides, comprise be positioned at electric motor car control board, for receiving pwm signal that described control board produces and driving the drive circuit of electric motor car internal power switch module work; Also comprise the current sensing means for gathering switching power devices operating current, described current sensing means is connected with monocycle current control circuit, the output of monocycle current control circuit is connected with drive circuit, and the input of monocycle current control circuit is connected with the output of control board pwm signal.The utility model can produce overcurrent protection signal, can close immediately and latch switch assembly, ensures that the electric current in switch module is unlikely to excessive, when next pwm pulse signal arrives, can automatic unlocking driving switch assembly, and allow electric motor car remain valid work.This new structure contains the advantage that above-mentioned patent has; but above-mentioned patent can be cut off the electricity supply when input power is too high timely to circuit protection non-combined circuit technology; and make electric motor car can also in running status; can input by self-opening power supply when power supply input is too low; ensure the normal operation of electric motor car, and can not because of overheated generation dieseling.In sum, so I devises a kind of circuit protection device for electric motor car.
Summary of the invention
In order to solve above-mentioned Problems existing, the utility model provides a kind of circuit protection device for electric motor car.
The utility model is achieved through the following technical solutions:
For a circuit protection device for electric motor car, comprise current feedback signal, optocoupler and drive circuit, the strong and weak detector of electric current, the strong and weak detector end of described electric current is provided with optocoupler and drive circuit; Described optocoupler and drive circuit upper end arrange the strong and weak detector of electric current; The strong and weak detector outer wrap of described electric current current input terminal; Described current input terminal end face inlays current foldback circuit; Described current foldback circuit is connected to start-up circuit by starting control knob; Described start-up circuit lower end arranges permanent magnet DC motor; Described permanent magnet DC motor outer face is provided with short-circuit protection circuit; Described short-circuit protection circuit end face is connected with automatic power opening device; Described automatic power opening device inside arranges current output terminal; Described current output terminal is connected to optocoupler and drive circuit by start-up circuit; Described optocoupler and drive circuit upper end are provided with the strong and weak detector of described electric current.
As further prioritization scheme of the present utility model, it is inner that the strong and weak detector of described electric current is arranged on described current input terminal; Described current input terminal upper surface is provided with described startup control knob; Described startup control knob is connected to described short-circuit protection circuit by start-up circuit.
As further prioritization scheme of the present utility model, described short-circuit protection circuit is connected with described current output terminal by automatic power opening device; Described current output terminal is connected to described current feedback signal; Described current feedback signal end face arranges described optocoupler and drive circuit.
As further prioritization scheme of the present utility model, described optocoupler and drive circuit upper end arrange the strong and weak detector of described electric current; The strong and weak detector end face of described electric current is connected to described current input terminal; Described current input terminal is arranged on described current foldback circuit end face.
Compared with prior art; the beneficial effects of the utility model are: the utility model control circuit with reduce because of circuit overheated generation spontaneous combustion phenomenon, ensure the security of the lives and property, reduce cost and unnecessary hidden danger, the useful life of product is lengthened; effectively circuit protection device is combined and produce reality; and production cost is lower, is applicable to using and promotes.
Accompanying drawing explanation
Fig. 1 is course of work circuit diagram of the present utility model;
Fig. 2 is current control system figure of the present utility model;
In figure: 1, current input terminal; 2, optocoupler and drive circuit; 3, the strong and weak detector of electric current; 4, current feedback signal; 5, current foldback circuit; 6, control knob is started; 7, start-up circuit; 8, permanent magnet DC motor; 9, short-circuit protection circuit; 10, automatic power opening device; 11, current output terminal.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail:
As shown in Figure 1 and Figure 2, a kind of circuit protection device for electric motor car, comprise current input terminal (1), optocoupler and drive circuit (2), the strong and weak detector (3) of electric current, described current input terminal (1) end is provided with optocoupler and drive circuit (2); Described optocoupler and drive circuit (2) upper end arrange the strong and weak detector (3) of electric current; Strong and weak detector (3) outer wrap of described electric current current input terminal (1); Described current input terminal (1) end face inlays current foldback circuit (5); Described current foldback circuit (5) is connected to start-up circuit (7) by starting control knob (6); Described start-up circuit (7) lower end arranges permanent magnet DC motor (8); Described permanent magnet DC motor (8) outer face is provided with short-circuit protection circuit (9); Described short-circuit protection circuit (9) end face is connected with automatic power opening device (10); Described automatic power opening device (10) inside arranges current output terminal (11); Described current output terminal (11) is connected to optocoupler and drive circuit (2) by start-up circuit (7); Described optocoupler and drive circuit (2) upper end are provided with the strong and weak detector (3) of described electric current.
It is inner that the strong and weak detector (3) of described electric current is arranged on described current input terminal (1); Described current feedback signal (4) upper surface is provided with described startup control knob (6); Described startup control knob (6) is connected to described short-circuit protection circuit (9) by start-up circuit (7); Described short-circuit protection circuit (9) is connected with described current output terminal (11) by automatic power opening device (10); Described current output terminal (11) is connected to described current feedback signal (4); Described current feedback signal (4) end face arranges described optocoupler and drive circuit (2); Described optocoupler and drive circuit (2) upper end arrange the strong and weak detector (3) of described electric current; Strong and weak detector (3) end face of described electric current is connected to described current input terminal (1); Described current input terminal (1) is arranged on described current foldback circuit (5) end face.
Described new structure is provided with current foldback circuit, short-circuit protection circuit, described current foldback circuit is for preventing major loop short circuit or DC traction motor generation ring fire from causing main circuit current excessive and damaging the electric equipment such as synchronous traction generator, main rectifier cabinet, locomotive, in traction, resistance braking or under load behavior, is all protected the overcurrent of main circuit and overvoltage; Described short-circuit protection circuit refers to when delivery outlet and ground short circuit, makes again Q4 close by Q3 conducting, again makes startup control to become low level output high level, realizes thus applying the optimization of circuit protection device.
More than show and describe general principle of the present utility model, principal character and advantage.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (4)
1. for a circuit protection device for electric motor car, it is characterized in that: comprise current feedback signal, optocoupler and drive circuit, the strong and weak detector of electric current, the strong and weak detector end of described electric current is provided with optocoupler and drive circuit; Described optocoupler and drive circuit upper end arrange the strong and weak detector of electric current; The strong and weak detector outer wrap of described electric current current input terminal; Described current input terminal end face inlays current foldback circuit; Described current foldback circuit is connected to start-up circuit by starting control knob; Described start-up circuit lower end arranges permanent magnet DC motor; Described permanent magnet DC motor outer face is provided with short-circuit protection circuit; Described short-circuit protection circuit end face is connected with automatic power opening device; Described automatic power opening device inside arranges current output terminal; Described current output terminal is connected to optocoupler and drive circuit by start-up circuit; Described optocoupler and drive circuit upper end are provided with the strong and weak detector of described electric current.
2. a kind of circuit protection device for electric motor car according to claim 1, is characterized in that: it is inner that the strong and weak detector of described electric current is arranged on described current input terminal; Described current input terminal upper surface is provided with described startup control knob; Described startup control knob is connected to described short-circuit protection circuit by start-up circuit.
3. a kind of circuit protection device for electric motor car according to claim 2, is characterized in that: described short-circuit protection circuit is connected with described current output terminal by automatic power opening device; Described current output terminal is connected to described current feedback signal; Described current feedback signal end face arranges described optocoupler and drive circuit.
4. a kind of circuit protection device for electric motor car according to claim 3, is characterized in that: described optocoupler and drive circuit upper end arrange the strong and weak detector of described electric current; The strong and weak detector end face of described electric current is connected to described current input terminal; Described current input terminal is arranged on described current foldback circuit end face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520767108.3U CN204967224U (en) | 2015-09-30 | 2015-09-30 | A circuit protection device for electric motor car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520767108.3U CN204967224U (en) | 2015-09-30 | 2015-09-30 | A circuit protection device for electric motor car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204967224U true CN204967224U (en) | 2016-01-13 |
Family
ID=55062265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520767108.3U Expired - Fee Related CN204967224U (en) | 2015-09-30 | 2015-09-30 | A circuit protection device for electric motor car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204967224U (en) |
-
2015
- 2015-09-30 CN CN201520767108.3U patent/CN204967224U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170726 Address after: 528415 Guangdong Province, Zhongshan City Xiaolan Town, Bao Fenghua Road No. 16 building two floor A Patentee after: Zhongshan car assistant Electronic Technology Co., Ltd. Address before: 518000, Shenzhen, Guangdong, Baoan District Songgang Street sand community two Sha Industrial Park III District No. two, A8, third floor Patentee before: Side board hand Electronic Science and Technology Co., Ltd. of Shenzhen |
|
| 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: 20160113 Termination date: 20180930 |