CN203352128U - Direct-current circuit protector - Google Patents
Direct-current circuit protector Download PDFInfo
- Publication number
- CN203352128U CN203352128U CN 201320298498 CN201320298498U CN203352128U CN 203352128 U CN203352128 U CN 203352128U CN 201320298498 CN201320298498 CN 201320298498 CN 201320298498 U CN201320298498 U CN 201320298498U CN 203352128 U CN203352128 U CN 203352128U
- Authority
- CN
- China
- Prior art keywords
- circuit
- chip microcomputer
- side terminal
- drive circuit
- switching tube
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The utility model discloses a direct-current circuit protector which comprises a working circuit, a single-chip microcomputer, a sampling circuit, a drive circuit, a switching tube, a test circuit, and an indication circuit. The sampling circuit comprises a first sampling circuit and a second sampling circuit. The drive circuit comprises a first drive circuit and a second drive circuit. The switching tube comprises a first switching tube and a second switching tube. The working circuit is connected with the single-chip microcomputer, and carries out rectification and voltage stabilization for an external output current, and then supplies the current to the single-chip microcomputer, wherein the current is served as a working power supply. The first sampling circuit and the second sampling circuit are respectively connected with the single-chip microcomputer, sample an output current, and supply the current to the single-chip microcomputer. The single-chip microcomputer is connected with the first drive circuit and the second drive circuit, and controls the first switching tube and the second switching tube respectively through the first drive circuit and the second drive circuit, thereby achieving the protection for an electric car circuit. The test circuit and the indication circuit are respectively connected with the single-chip microcomputer, and respectively used for testing and indicating the state of the direct-current circuit protector. The direct-current circuit protector is accurate in circuit current test, can quickly switch off a current, and is sensitive in reaction.
Description
Technical field
The utility model relates to the control circuit technical field, relates in particular to a kind of DC circuit protector.
Background technology
The circuit diagram of the circuit protection scheme that electric motor car (comprising electric bicycle, electro-tricycle, battery-operated motor cycle) at present adopts as shown in Figure 1; it mainly comprises binding post (A1, A2, B1, B2, B21, B22, B12), air switch K1, power lock K2 and fuse F1, has many electric motor cars even to omit fuse F1.Wherein A1, A2 are connected with positive pole with the negative pole of battery pack respectively, B1, B2 are connected with positive pole with the negative pole of controller respectively, this group wire is because giving load (motor) power supply, wire diameter is thicker, B21 is connected with the positive pole that controller is controlled side, give the control circuit power supply of controller, wire diameter is thinner.B22 and B12 form one group of both positive and negative polarity, give the power supplies such as illuminator of electric motor car.Air switch and fuse are connected on respectively in circuit, to being protected of whole electric motor car.
This circuit protection scheme has the following disadvantages:
1, power lock can not cut off the power supply of circuit fully, and there is the possibility of malfunction in electric motor car;
2, the air switch movement response is slow, catching fire and air switch does not cut off circuit yet of electric motor car often occurs
.
The utility model content
The purpose of this utility model is to provide a kind of energy fast shut-off electric current, is quick on the draw, reliable in action the DC circuit protector with additional functions.
The technical scheme that the utility model adopts specifically is achieved in that
The utility model provides a kind of DC circuit protector, comprise operating circuit, single-chip microcomputer, sample circuit, drive circuit, switching tube, test circuit and indicating circuit, described sample circuit comprises the first sample circuit and the second sample circuit, described drive circuit comprises the first drive circuit and the second drive circuit, and described switching tube comprises the first switching tube and second switch pipe; Described operating circuit is connected with described single-chip microcomputer and will after the current commutates of outside input, voltage stabilizing, offers described single-chip microcomputer as working power; Described the first sample circuit all is connected with described single-chip microcomputer with described the second sample circuit and, to the output current sampling, offers described single-chip microcomputer; Described single-chip microcomputer is connected with described the second drive circuit with described the first drive circuit, and control respectively the break-make of described the first switching tube and described second switch pipe by described the first drive circuit, described the second drive circuit, thereby realize the protection to vehicle electric circuitry; Described test circuit all is connected with described single-chip microcomputer with described indicating circuit, for testing and indicate the state of described DC circuit protector; The input side terminal of described DC circuit protector is connected with battery and power lock; the outlet side terminal is connected with controller for electric vehicle and lighting circuit; described input side terminal comprises the first input side terminal, the second input side terminal and the 3rd input side terminal; described the first input side terminal is connected with anode; described the second input side terminal is connected with power lock, and described the 3rd input side terminal is connected with battery cathode.
Preferably, judgement of the setting of the protective current of described DC circuit protector, time delays and sampled signal etc. is undertaken by described single-chip microcomputer.
Preferably, described switching tube is metal-oxide-semiconductor.
DC circuit protector of the present utility model, to circuital current detect accurately, can the fast shut-off electric current, be quick on the draw.
The accompanying drawing explanation
Fig. 1 is existing electric motor car power supply circuit.
Fig. 2 is the circuit diagram of the DC circuit protector of the utility model specific embodiment.
Fig. 3 is the operation principle schematic diagram of the DC circuit protector of the utility model specific embodiment.
Embodiment
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent more, below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail, it will be more clear making above-mentioned and other purpose of the present utility model, Characteristics and advantages.In whole accompanying drawings, identical Reference numeral is indicated identical part.Deliberately do not draw in proportion accompanying drawing, focus on illustrating purport of the present utility model.
Below in conjunction with Fig. 2 and Fig. 3, the specific embodiment of DC circuit protector of the present utility model is elaborated, the DC circuit protector of the utility model specific embodiment is to take the electric vehicle circuit brake to describe as example.
Fig. 2 is the circuit diagram of the DC circuit protector of the utility model specific embodiment, as shown in Figure 2, the DC circuit protector of the utility model embodiment, comprise operating circuit 20, single-chip microcomputer 10, sample circuit, drive circuit, switching tube, test circuit 90 and indicating circuit 100, sample circuit comprises the first sample circuit 40 and the second sample circuit 30, drive circuit comprises the first drive circuit 50 and the second drive circuit 60, and switching tube comprises the first switching tube 70 and second switch pipe 80; Operating circuit 20 is connected with single-chip microcomputer 10 and, by after the current commutates of outside input, voltage stabilizing, offers single-chip microcomputer 10 as working power; The first sample circuit 40 all is connected with single-chip microcomputer 10 with the second sample circuit 30 and, to the output current sampling, offers single-chip microcomputer 10; Single-chip microcomputer 10 is connected with the second drive circuit 60 with the first drive circuit 50, and drive respectively the action of the first switching tube 70, second switch pipe 80 by the first drive circuit 50, the second drive circuit 60, control the break-make of the first switching tube 70 and second switch pipe 80, realize the protection to circuit; The first switching tube 70, second switch pipe 80 are respectively by switching on and off the two states conducting or cutting off A1B1, A1B2 two-way output current; Test circuit 90 is connected with single-chip microcomputer 10, and whether the work that is used for testing the DC circuit protector is normal, simultaneously also as a kind of emergency mode of artificial tripping protection device; Indicating circuit 100 is connected with single-chip microcomputer 10, for showing the operating state of DC circuit protector; The input side terminal of DC circuit protector is connected with battery and power lock, the outlet side terminal is connected with controller for electric vehicle and lighting circuit, particularly, the input side terminal comprises the first input side terminal 11, the second input side terminal 12 and the 3rd input side terminal 13, the first input side terminal 11 is connected with anode, the second input side terminal 12 is connected with power lock K1 and is connected with anode by K1, and the 3rd input side terminal 13 is connected with battery cathode; The delivery side attached bag is drawn together the first outlet side terminal 21, the second outlet side terminal 22 and the 3rd outlet side terminal 23, the first outlet side terminal 21 is connected with controller for electric vehicle is anodal, and the second outlet side terminal 22 is connected with positive poles such as controller control side and illuminators, the 3rd outlet side terminal 23 is connected with negative poles such as controller and illuminators.
The protective current of the DC circuit protector of the utility model specific embodiment, the setting of time delays and the judgement of sampled signal etc. are undertaken by single-chip microcomputer 10.
Simultaneously, switching tube is metal-oxide-semiconductor.
Fig. 3 is the operation principle schematic diagram of the DC circuit protector of the utility model specific embodiment, as shown in Figure 3, when DC circuit protector place in circuit, after power lock is connected, operating circuit provides microcontroller power supply, system is started working, system initialization, initializing set normal voltage parameter A 0, B0 and time parameter t0; After system initialization completes, enter System self-test, whether the detection system state is normal, and as undesired as system mode, system is sent signal, and malfunction indicator lamp is bright, system break, and as system is normal, system has detected;
After system has detected, the DC circuit protector enters the guard mode to circuit.Once now system detects test signal, single-chip microcomputer drives the first drive circuit, the second drive circuit to work immediately simultaneously, turn-offs the first switching tube, second switch pipe, and protector cuts off electric current, protective circuit.
The DC circuit protector enters the guard mode to circuit, sample circuit A and B send into single-chip microcomputer by the electric current of circuit with the voltage signal formula respectively, single-chip microcomputer compares with standard voltage signal A0 and B0 respectively sampled signal A and B, when A is greater than A0, single-chip microcomputer sends instruction, through default time t0, the first drive circuit works, turn-off the first switching tube, cut off this road electric current, thereby realize the protection to circuit; When B is greater than B0, single-chip microcomputer sends instruction, and through default time t0, the second drive circuit works, turn-off the second switch pipe, cuts off this road electric current, thereby realize the protection to circuit.
DC circuit protector of the present utility model, to circuital current detect accurately, can the fast shut-off electric current, be quick on the draw, there is additional functions.
The utility model is not limited in the above-mentioned electric motor car embodiment that is applied to, and also can be applicable to other field.
A lot of details have been set forth so that fully understand the utility model in above description.But above description is only preferred embodiment of the present utility model, the utility model can be implemented much to be different from alternate manner described here, so the utility model is not subject to the restriction of top disclosed concrete enforcement.Any skilled personnel are not breaking away from technical solutions of the utility model scope situation simultaneously, all can utilize method and the technology contents of above-mentioned announcement to make many possible changes and modification to technical solutions of the utility model, or be revised as the equivalent embodiment of equivalent variations.Every content that does not break away from technical solutions of the utility model,, all still belong in the scope of technical solutions of the utility model protection any simple modification made for any of the above embodiments, equivalent variations and modification according to technical spirit of the present utility model.
Claims (3)
1. a DC circuit protector, it is characterized in that, comprise operating circuit, single-chip microcomputer, sample circuit, drive circuit, switching tube, test circuit and indicating circuit, described sample circuit comprises the first sample circuit and the second sample circuit, described drive circuit comprises the first drive circuit and the second drive circuit, and described switching tube comprises the first switching tube and second switch pipe; Described operating circuit is connected with described single-chip microcomputer and will after the current commutates of outside input, voltage stabilizing, offers described single-chip microcomputer as working power; Described the first sample circuit all is connected with described single-chip microcomputer with described the second sample circuit and, to the output current sampling, offers described single-chip microcomputer; Described single-chip microcomputer is connected with described the second drive circuit with described the first drive circuit, and controls respectively the break-make of described the first switching tube and described second switch pipe by described the first drive circuit, described the second drive circuit, thereby realizes the protection to circuit; Described test circuit all is connected with described single-chip microcomputer with described indicating circuit, for testing and indicate the state of described DC circuit protector; The input side terminal of described DC circuit protector is connected with battery and power lock; the outlet side terminal is connected with controller and lighting circuit; described input side terminal comprises the first input side terminal, the second input side terminal and the 3rd input side terminal; described the first input side terminal is connected with anode; described the second input side terminal is connected with power lock, and described the 3rd input side terminal is connected with anode.
2. DC circuit protector according to claim 1, is characterized in that, the judgement of the protective current of described DC circuit protector, the setting of time delays and sampled signal etc. is undertaken by described single-chip microcomputer.
3. DC circuit protector according to claim 1, is characterized in that, described switching tube is metal-oxide-semiconductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320298498 CN203352128U (en) | 2013-05-28 | 2013-05-28 | Direct-current circuit protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320298498 CN203352128U (en) | 2013-05-28 | 2013-05-28 | Direct-current circuit protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203352128U true CN203352128U (en) | 2013-12-18 |
Family
ID=49751979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320298498 Expired - Fee Related CN203352128U (en) | 2013-05-28 | 2013-05-28 | Direct-current circuit protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203352128U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280770A (en) * | 2013-05-28 | 2013-09-04 | 南京海勇电子科技有限公司 | Direct current circuit protector |
-
2013
- 2013-05-28 CN CN 201320298498 patent/CN203352128U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280770A (en) * | 2013-05-28 | 2013-09-04 | 南京海勇电子科技有限公司 | Direct current circuit protector |
| CN103280770B (en) * | 2013-05-28 | 2016-01-27 | 南京海勇电子科技有限公司 | A kind of direct current circuit protector |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101835318B (en) | Intelligent detector of LED street lamp and working method thereof | |
| CN104700527B (en) | Cable anti-theft device and its method | |
| CN202384445U (en) | Storage battery device | |
| CN207007973U (en) | A kind of broken thread detector | |
| CN103353569A (en) | Relay connection state detecting apparatus | |
| CN203352128U (en) | Direct-current circuit protector | |
| CN204131171U (en) | Car emergency starts power supply smart safety electric bottle clip | |
| CN106207974A (en) | DC motor protector and operation method thereof | |
| CN203481780U (en) | Circuit protector for electric vehicle | |
| CN203759177U (en) | UPS battery un-connection or anomaly detector | |
| CN104600763A (en) | Under-voltage protection circuit and lamp | |
| CN204230865U (en) | A kind of motor protecting device | |
| CN103259246B (en) | A kind of circuit protector for electric vehicle | |
| CN103280770B (en) | A kind of direct current circuit protector | |
| CN207557400U (en) | A kind of low voltage failure circuit investigates instrument | |
| CN103543380B (en) | High-tension distribution box monitoring device | |
| CN203623501U (en) | Automobile daytime running lamp control device | |
| CN209313470U (en) | A kind of protection circuit that car emergency startup power supply is docked with automobile starting battery | |
| CN106793301A (en) | A kind of emergency light on-off control system | |
| CN203205827U (en) | Current transformer secondary overvoltage protection circuit | |
| CN202978236U (en) | Current limiting protection circuit of AC current of photovoltaic inverter | |
| CN202906439U (en) | Drive circuit earth leakage protection circuit used for road traffic signal controller | |
| CN203267810U (en) | Electromobile controller | |
| CN206805223U (en) | Intelligent power relay-set | |
| CN204992688U (en) | Battery charging circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: NANJING HAIYONG ELECTRIC DRIVE TECHNOLOGY CO., LTD Free format text: FORMER OWNER: NANJING HAIYONG ELECTRONIC TECHNOLOGY CO., LTD. Effective date: 20141029 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20141029 Address after: 211200, No. 15, Zhongxing East Road, Lishui Economic Development Zone, Nanjing, Jiangsu, 5 Patentee after: NANJING HAIYONG ELECTRIC DRIVE TECHNOLOGY CO., LTD. Address before: Lishui County of Nanjing City, Jiangsu province 211200 Dong Ping Zhen Qun Li Cun Wei Hui Patentee before: Nanjing Haiyong Electronic Technology Co., Ltd. |
|
| 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: 20131218 Termination date: 20160528 |