CN201342951Y - High-voltage leakage protection system capable of detecting leakages of two poles simultaneously for electric automobile - Google Patents
High-voltage leakage protection system capable of detecting leakages of two poles simultaneously for electric automobile Download PDFInfo
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- CN201342951Y CN201342951Y CNU2008201552752U CN200820155275U CN201342951Y CN 201342951 Y CN201342951 Y CN 201342951Y CN U2008201552752 U CNU2008201552752 U CN U2008201552752U CN 200820155275 U CN200820155275 U CN 200820155275U CN 201342951 Y CN201342951 Y CN 201342951Y
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Abstract
The utility model relates to a high-voltage leakage protection system capable of detecting leakage of two poles simultaneously for an electric automobile, which comprises a power supply of the electric automobile. The utility model is characterized in that the system comprises two relay switches, a wave filter I, a voltage dividing circuit, a reverse phase proportion amplifier, a multiple-way switch, a wave filter II, an AD sampling circuit, a data processing unit, two fixed-valve resistance and two MOS switching tube. Compared with the prior art, the utility model can steadily and reliably detect the circumstance of leakage or electric shock of a person in a high-voltage circuit system of the electric automobile through measuring the insulating resistance of high-voltage direct current supply on the electric automobile in a real-time manner; and protection measures can be taken before a danger occurs.
Description
Technical field
The utility model relates to the energy and environmental protection field, relates in particular to the electronlmobil high--voltage leakage protective system that can carry out bipolar detection of electrical leakage simultaneously.
Background technology
On orthodox car, power supply is generally the low-voltage control power of 12V or 24V as a kind of auxiliary device.Along with becoming increasingly conspicuous of the energy and environmental issue, the motorized of vehicle has become a kind of inevitable trend.From power source side face, present electronlmobil roughly can be divided into three major types: pure electric automobile (EV-ElectricVehicle), hybrid vehicle (HEV-Hybrid Electric Vehicle) and fuel cell powered vehicle (FCV-FuelCell Vehicle).No matter be Vehicular accumulator cell, fuel cell, or super capacitor, its vdc far exceeds the scope that human body can bear, and the voltage that has reaches as high as 600V.Under high pressure like this, how in time to detect take place in the circuit electric leakage and personnel get an electric shock be must solution problem.Method commonly used at present is the situation of change of monitoring unipolar voltage, surpasses certain limit if positive source or negative pole voltage to ground change, and this end electric leakage then is described or has the people to get an electric shock.The hidden danger that this method exists is can't detect when two poles to leak electricity simultaneously or both ends of power someone's situation of getting an electric shock simultaneously.This will become inevitable potential safety hazard behind the electronlmobil batch manufacturing.
Summary of the invention
The purpose of this utility model is exactly in order to overcome the defective that above-mentioned prior art exists, a kind of safe and reliable electronlmobil high--voltage leakage protective system that can carry out bipolar detection of electrical leakage simultaneously to be provided.
The purpose of this utility model can be achieved through the following technical solutions: the electronlmobil high--voltage leakage protective system that can carry out bipolar detection of electrical leakage simultaneously; comprise electric car power supply; it is characterized in that; this system comprises two relay switches; filter I; bleeder circuit; anti-phase proportional amplifier; multiple way switch; filter II; the AD sample circuit; data processing unit; two fixed value resistances; two MOS switching valves; two high-voltage output ends of described electric car power supply are connected to two input ends of filter I behind relay switch; the mouth of described filter I links to each other with bleeder circuit; the mouth of described bleeder circuit links to each other with an input end of multiple way switch; another mouth of described filter links to each other with the input end of anti-phase proportional amplifier; the mouth of described anti-phase ratio amplifying circuit links to each other with another input end of multiple way switch; the mouth of described multiple way switch links to each other with the input end of filter II; the mouth of described filter II links to each other with the input end of AD sample circuit; between described fixed value resistance and two high-voltage output ends that are connected in parallel on electric car power supply after the MOS switching valve is connected and the ground, described data processing unit respectively with relay switch; multiple way switch; the AD sample circuit; the MOS switch controlled connects.
Described data processing unit is a fpga chip.
Compared with prior art; the utility model is by measuring the insulation resistance of high-voltage DC power supply on the electronlmobil in real time; the situation that detects on the electronlmobil electric leakage in the high-voltage circuit system or have the people to get an electric shock that can be reliable and stable, and before danger takes place, in time protected.
Description of drawings
Fig. 1 is the structural representation that the utility model can carry out the electronlmobil high--voltage leakage protective system of bipolar detection of electrical leakage simultaneously.
The specific embodiment
Below in conjunction with specific embodiment the utility model is described further.
Embodiment 1
As shown in Figure 1; can carry out the electronlmobil high--voltage leakage protective system of bipolar detection of electrical leakage simultaneously; comprise electric car power supply; it is characterized in that; this system comprises two relay switches; filter I; bleeder circuit; anti-phase proportional amplifier; multiple way switch; filter II; the AD sample circuit; fpga chip; two fixed value resistances; two MOS switching valves; two high-voltage output ends of described electric car power supply are connected to two input ends of filter I behind relay switch; the mouth of described filter I links to each other with bleeder circuit; the mouth of described bleeder circuit links to each other with an input end of multiple way switch; another mouth of described filter links to each other with the input end of anti-phase proportional amplifier; the mouth of described anti-phase ratio amplifying circuit links to each other with another input end of multiple way switch; the mouth of described multiple way switch links to each other with the input end of filter II; the mouth of described filter II links to each other with the input end of AD sample circuit; between described fixed value resistance and two high-voltage output ends that are connected in parallel on electric car power supply after the MOS switching valve is connected and the ground, described fpga chip respectively with relay switch; multiple way switch; the AD sample circuit; the MOS switch controlled connects.
Electronlmobil high--voltage leakage protective system judges whether the get an electric shock generation of situation of electric leakage or personnel by the ground insulation resistance of measuring power supply in real time.Two input ends of filter I and two high-voltage output ends of power supply, the end ground connection of filter I; The mouth of filter I links to each other with bleeder circuit, the mouth of bleeder circuit links to each other with an input end of multiple way switch, another mouth of filter I links to each other with the input end of anti-phase proportional amplifier, and the mouth of anti-phase ratio amplifying circuit links to each other with another input end of multiple way switch.The mouth of multiple way switch links to each other with the input end of filter II, and the mouth of filter II links to each other with the input end of AD.Fixed value resistance in parallel and the break-make by the high-voltage MOS pipe control linkage between two high-voltage output ends of power supply and the ground.The control of the collection of AD data, the control of multiple way switch and high-voltage MOS pipe is finished by fpga chip.
The method of the measurement insulation resistance that provides according to State Standard of the People's Republic of China GB/T 18384.1-2001 calculates power supply ground insulation resistance by FPGA.No matter leak electricity simultaneously because power supply is one pole electric leakage or the two poles of the earth, all will directly cause the decline in the insulation resistance of main.Set the minimum guard value of insulation resistance, the main supply switch of in time cutting off the electricity supply in the time of just can in personnel's electric shock or circuit, electric leakage taking place.
The insulation resistance that calculates power supply as FPGA is then made different safety methods according to the insulation resistance size less than the safety value of setting.The present invention is different from prior art and is: the high-voltage DC power supply two ends are by behind the filter circuit, and anode connects bleeder circuit, and negative terminal links to each other with anti-phase proportional amplifier; By the voltage that the multiple way switch selection will be measured, link the AD input end through behind the filter, an AD passage is adopted in the measurement of cathode voltage and cathode voltage.The standard biasing resistor directly is parallel to the positive and negative two ends of power supply respectively by high pressure N-MOS and P-MOS pipe.FPGA is responsible for the control of various switches and the collection of AD voltage, calculates insulating resistance value, and whether electric leakage takes place decision circuitry or personnel get an electric shock, and when danger takes place the block system relay switch.
Claims (2)
1. can carry out the electronlmobil high--voltage leakage protective system of bipolar detection of electrical leakage simultaneously; comprise electric car power supply; it is characterized in that; this system comprises two relay switches; filter I; bleeder circuit; anti-phase proportional amplifier; multiple way switch; filter II; the AD sample circuit; data processing unit; two fixed value resistances; two MOS switching valves; two high-voltage output ends of described electric car power supply are connected to two input ends of filter I behind relay switch; the mouth of described filter I links to each other with bleeder circuit; the mouth of described bleeder circuit links to each other with an input end of multiple way switch; another mouth of described filter links to each other with the input end of anti-phase proportional amplifier; the mouth of described anti-phase ratio amplifying circuit links to each other with another input end of multiple way switch; the mouth of described multiple way switch links to each other with the input end of filter II; the mouth of described filter II links to each other with the input end of AD sample circuit; between described fixed value resistance and two high-voltage output ends that are connected in parallel on electric car power supply after the MOS switching valve is connected and the ground, described data processing unit respectively with relay switch; multiple way switch; the AD sample circuit; the MOS switch controlled connects.
2. the electronlmobil high--voltage leakage protective system that can carry out bipolar detection of electrical leakage simultaneously according to claim 1 is characterized in that described data processing unit is a fpga chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201552752U CN201342951Y (en) | 2008-11-12 | 2008-11-12 | High-voltage leakage protection system capable of detecting leakages of two poles simultaneously for electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201552752U CN201342951Y (en) | 2008-11-12 | 2008-11-12 | High-voltage leakage protection system capable of detecting leakages of two poles simultaneously for electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201342951Y true CN201342951Y (en) | 2009-11-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201552752U Expired - Fee Related CN201342951Y (en) | 2008-11-12 | 2008-11-12 | High-voltage leakage protection system capable of detecting leakages of two poles simultaneously for electric automobile |
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| CN (1) | CN201342951Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102841284A (en) * | 2011-06-22 | 2012-12-26 | 同济大学 | On-line insulated monitoring method for high voltage of electromobile |
| CN102882183A (en) * | 2012-10-19 | 2013-01-16 | 深圳市晶福源电子技术有限公司 | Output leakage protection device |
| CN102931631A (en) * | 2012-11-15 | 2013-02-13 | 深圳市晶福源电子技术有限公司 | Output earth leakage protection device for high-voltage and direct-current power supply system |
| CN103022969A (en) * | 2012-10-29 | 2013-04-03 | 埃泰克汽车电子(芜湖)有限公司 | Leakage protection device for electromobile |
| CN104407220A (en) * | 2014-11-20 | 2015-03-11 | 合肥国轩高科动力能源股份公司 | High-voltage insulation resistance measuring equipment for electric automobile |
| CN105730244A (en) * | 2016-04-20 | 2016-07-06 | 合肥巨一动力系统有限公司 | High-voltage leakage protection circuit for electronic vehicle and control method of high-voltage leakage protection circuit |
| CN108427033A (en) * | 2017-02-14 | 2018-08-21 | Sk新技术株式会社 | Insulation measurement method and measuring device |
-
2008
- 2008-11-12 CN CNU2008201552752U patent/CN201342951Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102841284A (en) * | 2011-06-22 | 2012-12-26 | 同济大学 | On-line insulated monitoring method for high voltage of electromobile |
| CN102882183A (en) * | 2012-10-19 | 2013-01-16 | 深圳市晶福源电子技术有限公司 | Output leakage protection device |
| CN102882183B (en) * | 2012-10-19 | 2014-03-26 | 深圳市晶福源电子技术有限公司 | Output leakage protection device |
| CN103022969A (en) * | 2012-10-29 | 2013-04-03 | 埃泰克汽车电子(芜湖)有限公司 | Leakage protection device for electromobile |
| CN102931631A (en) * | 2012-11-15 | 2013-02-13 | 深圳市晶福源电子技术有限公司 | Output earth leakage protection device for high-voltage and direct-current power supply system |
| CN102931631B (en) * | 2012-11-15 | 2014-03-26 | 深圳市晶福源电子技术有限公司 | Output earth leakage protection device for high-voltage and direct-current power supply system |
| CN104407220A (en) * | 2014-11-20 | 2015-03-11 | 合肥国轩高科动力能源股份公司 | High-voltage insulation resistance measuring equipment for electric automobile |
| CN104407220B (en) * | 2014-11-20 | 2017-05-24 | 合肥国轩高科动力能源有限公司 | High-voltage insulation resistance measuring equipment for electric automobile |
| CN105730244A (en) * | 2016-04-20 | 2016-07-06 | 合肥巨一动力系统有限公司 | High-voltage leakage protection circuit for electronic vehicle and control method of high-voltage leakage protection circuit |
| CN105730244B (en) * | 2016-04-20 | 2017-11-07 | 合肥巨一动力系统有限公司 | A kind of high-pressure leakage protection circuit and its control method for electric automobile |
| CN108427033A (en) * | 2017-02-14 | 2018-08-21 | Sk新技术株式会社 | Insulation measurement method and measuring device |
| CN108427033B (en) * | 2017-02-14 | 2022-03-04 | Sk新技术株式会社 | Insulation resistance measuring method and measuring device |
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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: 20091111 Termination date: 20121112 |