CN203805711U - Protection circuit of environment-friendly electric vehicle - Google Patents
Protection circuit of environment-friendly electric vehicle Download PDFInfo
- Publication number
- CN203805711U CN203805711U CN201420210354.4U CN201420210354U CN203805711U CN 203805711 U CN203805711 U CN 203805711U CN 201420210354 U CN201420210354 U CN 201420210354U CN 203805711 U CN203805711 U CN 203805711U
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- Prior art keywords
- circuit
- vehicle frame
- fuse
- leakage
- electric leakage
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- Expired - Fee Related
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- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model discloses a protection circuit of an environment-friendly electric vehicle. The protection circuit comprises a drive circuit in the electric vehicle, a signal circuit and a conductive vehicle frame. The signal circuit is connected with the conductive vehicle frame through a bond strap. A fuse is arranged between the bond strap and the conductive vehicle frame. An electric leakage alarm circuit is connected with the two ends of the fuse in parallel. According to the protection circuit, due to the fact that the fuse and the electric leakage alarm circuit are installed between the bond strap and the conductive vehicle frame, when short circuit is caused when the 48 V drive circuit makes contact with the conductive vehicle frame, the fuse is fused to be broken, an electric leakage alarm light turns bright, a horn loses effects, but other functions are normal; after electric leakage is removed, the electric leakage alarm light turns dark, the broken fuse is replaced with a new fuse, and the vehicle becomes normal again.
Description
Technical field
The utility model relates to electric environment protecting car technical field, relates in particular to a kind of protective circuit of environmental protection electric motor-car.
Background technology
Battery-driven car environmental protection, zero-emission, very big to the contribution of energy-saving and emission-reduction, so the quantity growth of four moving four-wheels is exceedingly fast in recent years, market is fabulous, along with electric four-wheeled increase, has also occurred some problems, wherein burns the problem of line with regard to ordinary appearance.
It is mainly easily to burn grounding jumper that battery-driven car burns line, major cause is in battery-driven car, to have two cover circuits, a set of driving circuit is the large circuit of 48V, the signal circuit that a set of control signal lamp, headlight, loudspeaker, wiper and voltage are 12V, this signal circuit is converted by DC conv, and negative pole is public negative pole.The horn punch of four-wheeled is arranged on bearing circle, form loop by steering hub column bonding, so must have the grounding jumper guarantee loudspeaker that are connected with car body on the negative pole in signal circuit normally works, and problem just appears at here, should be vehicle is a kinetoplast, crossing once be expert at has a place to contact (except negative pole) with car body in car will to cause short circuit in 48V circuit, and burns out grounding jumper, and appreciation car load all burns.
More existing manufacturers have made improvement in order just to overcome the above problems to circuit, some overstrikings grounding jumper, cure the symptoms, not the disease like this but also waste electric power.The manufacturer also having has added individual wire fuse between conv and storage battery negative pole, can prevent burning line by actv. although it is so, but when the as easy as rolling off a log conv that burns out after this blowout, also have some manufacturers to remove grounding jumper, and do not have grounding jumper to be connected with car body, loudspeaker can not be worked, and a horn punch has just been installed separately elsewhere by these manufacturers, arrange like this that circuit length is difficult to arrange and horn punch arranges the bad operation of chaufeur elsewhere.
Utility model content
The utility model is mainly to solve existing technical matters in prior art, thereby provides a kind of safety performance high, the protective circuit of the environmental protection electric motor-car that circuit protection ability is strong.
Above-mentioned technical matters of the present utility model is mainly solved by following technical proposals:
The protective circuit of environmental protection electric motor-car of the present utility model; comprise driving circuit, signal circuit and the conduction vehicle frame of battery-driven car inside; described signal circuit is connected with described conduction vehicle frame by a grounding jumper; between described grounding jumper and described conduction vehicle frame, be also provided with a wire fuse, the two ends of described wire fuse are also parallel with a leakage-current alarm circuit.
Further, described leakage-current alarm circuit comprises light-emitting diode and the resistance of series connection.
Further, described wire fuse and described leakage-current alarm circuit integrating are a protection instrument, and described protection instrument is located between grounding jumper and conduction vehicle frame.
Compared with prior art, the utility model has the advantage of: by wire fuse and leakage-current alarm circuit being installed between grounding jumper and conduction vehicle frame, when 48V driving circuit contacts while causing short circuit with conduction car body, blown fuse, leakage-current alarm lamp is bright, at this moment loudspeaker lost efficacy, but other functions are all normal, after electric leakage is got rid of, leakage-current alarm lamp goes out, again change wire fuse, it is normal that vehicle recovers.
Brief description of the drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the schematic block circuit diagram of the protective circuit of environmental protection electric motor-car of the present utility model.
Description of reference numerals: 1, driving circuit, 2, signal circuit, 3, conduction vehicle frame, 4, grounding jumper, 5, leakage-current alarm circuit, 6, protection instrument.
Detailed description of the invention
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail, thereby so that advantage of the present utility model and feature can be easier to be it will be appreciated by those skilled in the art that, protection domain of the present utility model is made to more explicit defining.
Consult shown in Fig. 1; the protective circuit of a kind of environmental protection electric motor-car of the present utility model; comprise driving circuit 1, the signal circuit 2 and conduction vehicle frame 3 of battery-driven car inside; signal circuit 2 is connected with conduction vehicle frame 3 by a grounding jumper 4; between grounding jumper 4 and conduction vehicle frame 3, be also provided with a wire fuse FU, the two ends of wire fuse FU are also parallel with a leakage-current alarm circuit 5.By wire fuse FU and leakage-current alarm circuit 5 being installed between grounding jumper 4 and conduction vehicle frame 3, when the positive pole of 48V driving circuit 1 contacts with conduction car body 3 while causing short circuit, wire fuse FU fusing, leakage-current alarm lamp is bright, and at this moment loudspeaker lost efficacy, but other functions are all normal, after electric leakage is got rid of, leakage-current alarm lamp goes out, and again changes wire fuse FU, and it is normal that vehicle recovers.
In the present embodiment, leakage-current alarm circuit 5 comprises LED and the resistance R of mutual series connection, simple in structure, and low price also can use other warning circuits 5, also can install buzzer additional.Wire fuse FU and leakage-current alarm circuit 5 one turn to a protection instrument 6, and protection instrument 6 is located between grounding jumper 4 and conduction vehicle frame 3.Wire fuse FU and leakage-current alarm circuit 5 are integrated in a protection instrument 6, dismounting aspect, and interchangeability is strong, is applicable to the Batch assemblage of batch manufacturing and battery-driven car.
The above, be only detailed description of the invention of the present utility model, but protection domain of the present utility model is not limited to this, and any variation of expecting without creative work or replacement, within all should being encompassed in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain that claims were limited.
Claims (3)
1. the protective circuit of an environmental protection electric motor-car; comprise driving circuit (1), the signal circuit (2) and conduction vehicle frame (3) of battery-driven car inside; described signal circuit (2) is connected with described conduction vehicle frame (3) by a grounding jumper (4); it is characterized in that: between described grounding jumper (4) and described conduction vehicle frame (3), be also provided with a wire fuse (FU), the two ends of described wire fuse (FU) are also parallel with a leakage-current alarm circuit (5).
2. the protective circuit of environmental protection electric motor-car according to claim 1, is characterized in that: described leakage-current alarm circuit (5) comprises light-emitting diode (LED) and the resistance (R) of mutual series connection.
3. the protective circuit of environmental protection electric motor-car according to claim 2; it is characterized in that: described wire fuse (FU) turns to a protection instrument (6) with described leakage-current alarm circuit (5) one, described protection instrument (6) is located between grounding jumper (4) and conduction vehicle frame (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420210354.4U CN203805711U (en) | 2014-04-28 | 2014-04-28 | Protection circuit of environment-friendly electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420210354.4U CN203805711U (en) | 2014-04-28 | 2014-04-28 | Protection circuit of environment-friendly electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203805711U true CN203805711U (en) | 2014-09-03 |
Family
ID=51444509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420210354.4U Expired - Fee Related CN203805711U (en) | 2014-04-28 | 2014-04-28 | Protection circuit of environment-friendly electric vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203805711U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106338671A (en) * | 2016-08-11 | 2017-01-18 | 徐州晶茂电子科技有限公司 | Electric leakage alarm device capable of disconnecting vehicle shell from power source and used for electric vehicle and method |
| CN107769152A (en) * | 2017-11-28 | 2018-03-06 | 中车大连机车车辆有限公司 | Electric vehicle zonal cooling formula ground power supply system feeds short-circuit protector |
| CN108001482A (en) * | 2017-11-28 | 2018-05-08 | 中车大连机车车辆有限公司 | Electric vehicle zonal cooling formula ground power supply system and method |
-
2014
- 2014-04-28 CN CN201420210354.4U patent/CN203805711U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106338671A (en) * | 2016-08-11 | 2017-01-18 | 徐州晶茂电子科技有限公司 | Electric leakage alarm device capable of disconnecting vehicle shell from power source and used for electric vehicle and method |
| CN106338671B (en) * | 2016-08-11 | 2019-03-15 | 徐州晶茂电子科技有限公司 | A kind of vehicle shell power supply separation electric leakage alarm device and method for battery truck |
| CN107769152A (en) * | 2017-11-28 | 2018-03-06 | 中车大连机车车辆有限公司 | Electric vehicle zonal cooling formula ground power supply system feeds short-circuit protector |
| CN108001482A (en) * | 2017-11-28 | 2018-05-08 | 中车大连机车车辆有限公司 | Electric vehicle zonal cooling formula ground power supply system and method |
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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: 20140903 Termination date: 20150428 |
|
| EXPY | Termination of patent right or utility model |