CN202413448U - Photoelectric isolation type electric shock protection device of electric automobile - Google Patents
Photoelectric isolation type electric shock protection device of electric automobile Download PDFInfo
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- CN202413448U CN202413448U CN 201120548746 CN201120548746U CN202413448U CN 202413448 U CN202413448 U CN 202413448U CN 201120548746 CN201120548746 CN 201120548746 CN 201120548746 U CN201120548746 U CN 201120548746U CN 202413448 U CN202413448 U CN 202413448U
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- photoelectric
- isolated
- diode
- electronlmobil
- electric shock
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Abstract
The utility model provides a photoelectric isolation type electric shock protection device of an electric automobile. The photoelectric isolation type electric shock protection device comprises an on-off module and a starting module, wherein the output end of the on-off module is connected with a high-voltage storage battery sub group of the electric automobile and is used for connecting and disconnecting the high-voltage storage battery sub group of the electric automobile, and the starting module is connected with the input end of the on-off module and is used for starting and controlling the action of the on-off module. The photoelectric isolation type electric shock protection device has the advantages that the high-voltage storage battery sub group of the electric automobile can be conducted and disconnected, the voltage of each high-voltage storage battery sub group is the safe voltage of a human body, the electric shock risk of personnel in production and maintenance is reduced, in addition, the photoelectric isolation technology is adopted, the anti-interference and isolation performance of the whole circuit system can be better, and the photoelectric isolation type electric shock protection device of the electric automobile can more stably work.
Description
Technical field
The utility model relates to a kind of prevention of electric shock device, relates in particular to a kind of electronlmobil photoelectric-isolated prevention of electric shock device.
Background technology
The development battery-driven car is except the performance performance, and safety how to take into account the user is the important topic of vehicle technology development; Because of the power system of battery-driven car is different from general traditional combustion engine vehicle; Therefore battery-driven car is except that the requirement of Generally Recognized as safe property; Protection has special standard in addition to its electrical safety, must meet code requirement in the vehicle design process, to avoid the battery-driven car potential risk and to guarantee the safety of use.
Compared to the traditional combustion engine vehicle, the focus of safety of electric vehicle is also different, at first is the risk that power resources-whether the high tension battery group causes personnel to get an electric shock of battery-driven car; At present; On pure electric automobile, usually adopt the positive pole that main power switch, key switch cut off the car load battery pack and the mode of the input supply terminal of other electric parts to prevent to get an electric shock, and the connection of still being kept perfectly of high tension battery group, so have following weak point: one; In process of production; Along with the continuous access of high pressure plurality of groups of storage batteries, when the high tension battery group total voltage of serial connection surpasses the safety voltage value, the danger that the just easy appearance of producers is got an electric shock; Two, battery-driven car gets into if any water in the process of moving, if original high tension battery group can not in time be broken off, the occupant is prone to cause personnel's Danger Electric shock risk; Three; Electronlmobil is in maintenance, owing to there are electric parts such as electromagnetic compatibility problem, the electric machine controller that uses on the car, DC/DC, battery charger, air-conditioner controller; All respectively car body is connected to 1 common mode capacitance at the power input positive and negative electrode; Made on the band of uncharged chassis electricity, though the life danger that can directly not cause with voltage causes the car personnel that the hand fiber crops are arranged easily and causes psychological stress; Electronlmobil adopts the high voltage supply system of high tension battery group and the low-voltage power supply system of 12V, and the negative pole of high tension battery group must not have any connection with electric chassis, and the high voltage supply system of high tension battery group and the low-voltage power supply system of 12V can not have any contact on request; And having had the low-voltage power supply system of high tension battery group electric power system and 12V, the existence of common mode capacitance gets in touch; Although have only voltage during stable state on the common mode capacitance, there is not electric current to pass through, work as personnel or other conductive articles and run into common mode capacitance; Will disequilibrate; Form the loop, thereby will produce the safety that electric current influences personnel this moment, yet; In order to satisfy the electromagnetic compatibility of electronlmobil, common mode capacitance can not be cancelled.
The utility model content
In view of this; A kind of electronlmobil photoelectric-isolated prevention of electric shock device that the utility model provides; Can electronlmobil high voltage power storage battery divided into groups to switch on and off, the voltage of the grouping of each high voltage power storage battery be the safety voltage of human body, has reduced personnel in the danger of producing, the maintenance mesohigh gets an electric shock; And employing photoelectric isolation technology; Make the input/output terminal electrical isolation, and then the disturbance rejection of entire circuit system and isolation performance are better, make electronlmobil photoelectric-isolated prevention of electric shock device more stable work.
A kind of electronlmobil photoelectric-isolated prevention of electric shock device that the utility model provides comprises the break-make module, and mouth divides into groups to be connected with electronlmobil high voltage power storage battery, is used for electronlmobil high voltage power storage battery is divided into groups to connect and disconnection; Start module, be connected to the input end of said break-make module, be used for driving, control said break-make module action;
Further, said break-make module comprise the voltage that can export a plurality of mutually insulateds separately the isolated form voltage changer, with said isolated form voltage changer bonded assembly photoelectric isolated driver and the transistor Q1 that joins with said photoelectric isolated driver;
Further, said startup module comprises that boosting battery E3, positive pole are connected to the anodal outside starting switch of said boosting battery E3;
Further; Said outside starting switch is a key switch; Said outside starting switch comprises contact P, contact ACC, diode D1, contact ST and diode D2, and said contact P can connect with contact ACC or contact ST, and said contact ACC is connected with the positive pole of diode D1; Said contact ST is connected with the positive pole of diode D2, and said diode D1 and the parallel connection of diode D2 negative pole form or door;
Further, the input end of said photoelectric isolated driver is connected to the diode D1 of said outside starting switch and the negative pole of the arbitrary diode of diode D2 through current-limiting resistance R1;
Further, said transistor Q1 is IGBT or field effect transister;
Further, the grid of said transistor Q1 is connected to the mouth of said photoelectric isolated driver, is provided with clamping diode D4 between the terminal A of the source electrode of said transistor Q1 and photoelectric isolated driver;
Further, be provided with sustained diode 5 between the collector and emitter of said transistor Q1.
The beneficial effect of the utility model is: can electronlmobil high voltage power storage battery divided into groups to switch on and off; The voltage of the grouping of each high voltage power storage battery is the safety voltage of human body; Personnel have been reduced in the danger of producing, the maintenance mesohigh gets an electric shock; And the employing photoelectric isolation technology makes the disturbance rejection of entire circuit system and isolation performance better, makes electronlmobil photoelectric-isolated prevention of electric shock device more stable work.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further described:
Fig. 1 is the schematic circuit diagram of the utility model.
The specific embodiment
As shown in the figure; Fig. 1 is the schematic circuit diagram of the utility model; A kind of electronlmobil photoelectric-isolated prevention of electric shock device that the utility model provides; Comprise: the break-make module, mouth divides into groups to be connected with electronlmobil high voltage power storage battery, is used for electronlmobil high voltage power storage battery is divided into groups to connect and disconnection; Start module; Be connected to the input end of said break-make module, be used for startup and control said break-make module action, the utility model connects electronlmobil high voltage power battery group; Make the voltage of each grouping be safety voltage, protection maintenance and occupant's safety.
Said break-make module comprise the voltage that can export a plurality of mutually insulateds separately isolated form voltage changer 1, with said isolated form voltage changer 1 bonded assembly photoelectric isolated driver 3 and the transistor Q1 that joins with said photoelectric isolated driver 3; Said isolated form voltage changer 1 is a prior art with photoelectric isolated driver 3; Repeat no more at this; Voltage V1, the V2 of the mutually insulated separately of said isolated form voltage changer 1 output ... Vn, a voltage V1 of said isolated form voltage changer 1 output is added on the terminal C1 and terminal C2 of said photoelectric isolated driver 3, and the number of voltages of said isolated form voltage transformer 1 output equates with the number of said photoelectric isolated driver 3 at least; The grid of said transistor Q1 is connected with the mouth of said photoelectric isolated driver 3; Said break-make module divides into groups electronlmobil high voltage power storage battery to connect, and when going, each divides into groups to connect to make the high voltage power storage battery; Outwards export high pressure; When maintenance, said break-make module is broken off with the high voltage power battery group and being connected, protection personnel's safety.
In the present embodiment, said startup module comprises boosting battery E3, is connected to the anodal outside starting switch 2 of said boosting battery E3, and said startup module is that said break-make module provides operating voltage, controls the action of said break-make module.
In the present embodiment; Said outside starting switch 2 is a key switch; Said outside starting switch 2 comprises contact P, contact ACC, diode D1, contact ST and diode D2; Said contact ACC is connected with the positive pole of diode D1, and said contact ST is connected with the positive pole of diode D2, and said diode D1 and the parallel connection of diode D2 negative pole form or door; Said contact P can connect with said contact ACC or contact ST, and the said startup module of said outside starting switch 2 controls provides the break-make in the loop of voltage to said break-make module.
In the present embodiment; The input end of said photoelectric isolated driver 3 is connected to the diode D1 of said outside starting switch 2 and the negative pole of the arbitrary diode of diode D2 through current-limiting resistance R1; Said photoelectric isolated driver 3 provides operating voltage for transistor Q1; And photoelectric isolated driver 3 makes the disturbance rejection of entire circuit system and isolation performance better, more stable work.
In the present embodiment, said transistor Q1 is IGBT or field effect transister, and IGBT is an insulated gate bipolar transistor; It had the characteristics of high input impedance and low conducting-state voltage two aspects when said transistor Q1 was IGBT, and driving power is little, and switching speed is fast; The working reaction of the utility model is speeded up, when said transistor Q1 is FET, Heat stability is good; The work area is big, and input impedance is high.
In the present embodiment, the grid of said transistor Q1 is connected to the mouth of said photoelectric isolated driver 3, is connected to clamping diode D4 between the terminal of the collecting electrode of said transistor Q1 and photoelectric isolated driver 3, ensures the normal operation of transistor Q1.
In the present embodiment; Be connected to sustained diode 5 between the collector and emitter of said transistor Q1,, prevent the electric current and voltage transition and damage transistor Q1 in order to protect said transistor Q1; And; For electronlmobil high voltage power storage battery provides the charging path, the collecting electrode of said transistor Q1 is connected to the positive pole that electronlmobil high voltage power storage battery divides into groups, and the emitter of said transistor Q1 connects the negative pole that adjacent electronlmobil high voltage power storage battery divides into groups.
In the present embodiment, said photoelectric isolated driver 3 lacks one with the control group group number that transistor Q1 constitutes than the packet count of electronlmobil high voltage power storage battery.
In the present embodiment, when contact P and the contact ACC or the contact ST connection of said outside starting switch 2, said boosting battery E3 supplies power to said isolated form voltage changer 1 and said photoelectric isolated driver 3 through diode D1 or diode D2; Said isolated form voltage changer 1 is to the terminal C1 and the C2 power supply of said photoelectric isolated driver 3; At this moment, said photoelectric isolated driver 3 output voltages make said transistor Q1 conducting; The conducting of transistor Q1 makes that electronlmobil high voltage power storage battery divides into groups to connect; Said electronlmobil high voltage power storage battery is outwards supplied power, and when contact P and said contact ACC or contact ST disconnection, then said electronlmobil photoelectric-isolated prevention of electric shock device quits work; Electronlmobil high voltage power storage battery divides into groups again to break off, thereby reaches the purpose of protection personal security.
Explanation is at last; Above embodiment is only unrestricted in order to the technical scheme of explanation the utility model; Although with reference to preferred embodiment the utility model is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement the technical scheme of the utility model; And not breaking away from the aim and the scope of the utility model technical scheme, it all should be encompassed in the middle of the claim scope of the utility model.
Claims (8)
1. electronlmobil photoelectric-isolated prevention of electric shock device is characterized in that: comprising:
The break-make module, mouth divides into groups to be connected with electronlmobil high voltage power storage battery, is used for electronlmobil high voltage power storage battery is divided into groups to connect and disconnection;
Start module, be connected to the input end of said break-make module, be used for startup and control said break-make module action.
2. according to the said electronlmobil photoelectric-isolated of claim 1 prevention of electric shock device, it is characterized in that: said break-make module comprise the voltage that can export a plurality of mutually insulateds separately the isolated form voltage changer, with said isolated form voltage changer bonded assembly photoelectric isolated driver and the transistor Q1 that joins with said photoelectric isolated driver.
3. according to the said electronlmobil photoelectric-isolated of claim 2 prevention of electric shock device, it is characterized in that: said startup module comprises that boosting battery E3, positive pole are connected to the anodal outside starting switch of said boosting battery E3.
4. according to the said electronlmobil photoelectric-isolated of claim 3 prevention of electric shock device; It is characterized in that: it is characterized in that: said outside starting switch is a key switch; Said outside starting switch comprises contact P, contact ACC, diode D1, contact ST and diode D2; Said contact P can connect with contact ACC or contact ST; Said contact ACC is connected with the positive pole of diode D1, and said contact ST is connected with the positive pole of diode D2, and said diode D1 and the parallel connection of diode D2 negative pole form or door.
5. according to the said electronlmobil photoelectric-isolated of claim 4 prevention of electric shock device, it is characterized in that: the input end of said photoelectric isolated driver is connected to the diode D1 of said outside starting switch and the negative pole of the arbitrary diode of diode D2 through current-limiting resistance R1.
6. according to the said electronlmobil photoelectric-isolated of claim 5 prevention of electric shock device, it is characterized in that: said transistor Q1 is IGBT or field effect transister.
7. according to the said electronlmobil photoelectric-isolated of claim 6 prevention of electric shock device; It is characterized in that: the grid of said transistor Q1 is connected to the mouth of said photoelectric isolated driver, is provided with clamping diode D4 between the terminal A of the source electrode of said transistor Q1 and photoelectric isolated driver.
8. according to the said electronlmobil photoelectric-isolated of claim 7 prevention of electric shock device, it is characterized in that: be provided with sustained diode 5 between the source electrode of said transistor Q1 and drain electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120548746 CN202413448U (en) | 2011-12-23 | 2011-12-23 | Photoelectric isolation type electric shock protection device of electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120548746 CN202413448U (en) | 2011-12-23 | 2011-12-23 | Photoelectric isolation type electric shock protection device of electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202413448U true CN202413448U (en) | 2012-09-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120548746 Expired - Fee Related CN202413448U (en) | 2011-12-23 | 2011-12-23 | Photoelectric isolation type electric shock protection device of electric automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202413448U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102602295A (en) * | 2011-12-31 | 2012-07-25 | 重庆小康工业集团股份有限公司 | Awakening electric shock prevention device for electric vehicle |
-
2011
- 2011-12-23 CN CN 201120548746 patent/CN202413448U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102602295A (en) * | 2011-12-31 | 2012-07-25 | 重庆小康工业集团股份有限公司 | Awakening electric shock prevention device for electric vehicle |
| CN102602295B (en) * | 2011-12-31 | 2015-01-28 | 重庆小康工业集团股份有限公司 | Awakening electric shock prevention device for electric vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Chongqing Ruichi Auto Industrial Co., Ltd. Assignor: Chongqing Xiaokang Industry Group Co., Ltd. Contract record no.: 2012500000092 Denomination of utility model: Photoelectric isolation type electric shock protection device of electric automobile Granted publication date: 20120905 License type: Exclusive License Record date: 20121203 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20201223 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |