CN105774558A - Integrated safety detection device for electric automobile - Google Patents
Integrated safety detection device for electric automobile Download PDFInfo
- Publication number
- CN105774558A CN105774558A CN201610153755.4A CN201610153755A CN105774558A CN 105774558 A CN105774558 A CN 105774558A CN 201610153755 A CN201610153755 A CN 201610153755A CN 105774558 A CN105774558 A CN 105774558A
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- Prior art keywords
- voltage
- loop
- detection module
- high tension
- electric automobile
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0069—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to the isolation, e.g. ground fault or leak current
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/04—Cutting off the power supply under fault conditions
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
Abstract
The invention discloses an integrated safety detection device for an electric automobile. The integrated safety detection device for the electric automobile comprises a high-voltage and low-voltage voltage detection module, a high-voltage interlocking detection module, a load state detection module, an insulation detection module and a pre-charging detection module. The integrated safety detection device for the electric automobile is arranged for a high-voltage electricity system of the electric automobile, various possibly-faced potential faults are detected, and the detection modules are integrated. Due to the provided integrated safety detection device for the electric automobile, main functions of insulation detection, power-on and power-off protection, high-voltage and low-voltage protection, high-voltage circuit interlocking and the like of the electric automobile are integrated, and the overall reliability of safety detection of the electric automobile is improved; and due to the provided integrated safety detection device for the electric automobile, active insulation detection is adopted, the insulation level between a battery box and an automobile body is improved, automobile short-circuit risks are reduced, and meanwhile the measurement accuracy is improved.
Description
Technical field
The invention belongs to electric automobile security fields, relate to a kind of electric automobile integrated security detecting device, be specifically related to a kind of for integrated detection high voltage loop of electric automobile safety, power-on and power-off safety, insulation safety device.
Background technology
China's new-energy automobile, through the research and development of last decade and demonstrating running, has been provided with conditions for sports industry, and motor, battery, the key technology such as automatically controlled achieve important breakthrough.The propelling planned along with thousand, ten city and the demonstrating running of various large-scale activity, pure electric automobile and plug-in hybrid-power automobile start scale and put on market, and are accepted by consumer gradually.
One important feature of electric automobile is exactly domestic equipped with the high voltage power supply ensureing enough power performance, forms the power loop with high voltage, big electric current.The set of cells that current electric automobile uses is in series at the cell of 3.6V by voltage mostly, the running voltage of electric automobile high-voltage electrical system is at more than 300V, and the impedance of electrical communications circuit is only small, the running current of high-voltage electric system is likely to be breached ampere tens of, even hundreds of, and instantaneous short-circuit discharge current is multiplied especially.The high voltage electric of electric automobile is all constituted safely potential threat by the faults such as the short circuit of high tension loop, electric leakage, when there is the fault such as high tension loop failure of insulation or short circuit, on high voltage and big electric current entail dangers to car, the personal safety of passenger, also can affect the normal operation of low-voltage electrical and vehicle control device simultaneously.
Existing safety detection technology carries out high-voltage safety monitoring mainly through independent insulation monitoring module, and battery management system carries out electrokinetic cell condition adjudgement, if the communication between these distributed module and master controllers is broken down, will appear from the problem that fault cannot report in time.
Summary of the invention
In order to solve the problems referred to above, the present invention proposes a kind of electric automobile integrated security detecting device, and it is according to electric automobile safe design requirement, and high tension loop possible breakdown carries out safety detection.The fault of electric automobile high voltage dynamic Force system, expiration policy and Insulation monitoring have been carried out integrated by the present invention, by integrated detection module, vehicle-state are monitored, it is simple to improve reliability and the safety of electric automobile.
A kind of electric automobile integrated security detecting device of the present invention, including high-low pressure voltage detection module, high-voltage interlocking detection module, load condition detection module, insulation monitoring module, precharge detection module.
It is an advantage of the current invention that:
(1) a kind of electric automobile integrated security detecting device provided by the present invention, arranges for electric automobile high-voltage electricity system, all kinds of incipient faults being likely to face has been detected, and has carried out integrated to detection module；
(2) a kind of electric automobile integrated security detecting device provided by the present invention; the major functions such as electric automobile insulation detection, power-on and power-off protection, high-low pressure protection, high tension loop interlocking are carried out integrated, improves the reliability that electric automobile safety detection is overall；
(3) a kind of electric automobile integrated security detecting device provided by the present invention, adopts active Insulation monitoring, improves the class of insulation between battery case and car body, reduce the risk of vehicle short circuit, add the accuracy of measurement simultaneously.
Accompanying drawing explanation
Fig. 1: the schematic diagram of a kind of electric automobile integrated security detecting device that the present invention proposes.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail.
A kind of electric automobile integrated security detecting device of the present invention, as it is shown in figure 1, include high-low pressure voltage detecting (A/D sampling) module, high-voltage interlocking detection module, load condition detection module, insulation monitoring module, precharge detection module.；
The present invention can arrange for electric automobile high-voltage system, carries out height loop voltage detection, the detection of power-on and power-off safety detection, system loading, high tension loop interlocking detection and insulation resistance detection.
High-low pressure voltage detection module is made up of three A/D sampling modules, can after high tension loop be connected, system can respectively before fuse (FUSE) is front, DC-AC inverter with DC-AC inverter after high tension loop magnitude of voltage detect in real time, if the magnitude of voltage that master chip detects is within the limits prescribed, then high voltage supply loop normal operation.Once detect that voltage is more than maximum or less than minima, then show that power battery pack or accumulator occur in that overvoltage or press fault for a long time, safety detecting system master chip export failure alarm signal, wait artificial treatment.
Load condition detection is connected drive motor by load condition detection module and detects the load operating conditions of drive motor in real time, and be connected with PC by CAN communication module, export analyzing and diagnosing result and more comprehensively high-pressure system status information, response process and implementation status voluntarily.
Precharge detection module controls the power-on and power-off safety detection of high tension loop by controlling a pre-charge-relay K3 and high tension loop main relay K1K2.At Insulation monitoring by afterwards, high tension loop is started precharge detection, if the terminal voltage of high tension loop does not reach the 10% of battery tension in maximum pre-charging time, system then judges the failure of high tension loop pre-charge process, then monitoring system disconnects pre-charge-relay, is simultaneously emitted by fault alarm and waits artificial treatment.Within maximum precharge time, reach the 10% of accumulator battery voltage in the terminal voltage obtaining high tension loop, but be not above 90%, then judge that pre-charge process is insufficient；And after waiting for a period of time, again close pre-charge-relay carry out secondary precharge, if being still not reaching to pre-charge voltage requirement, then judge be pre-charged unsuccessfully, disconnection pre-charge contactor, be simultaneously emitted by fault message.Described power-on and power-off safety detection is pre-charged in maximum pre-charging time main Huis wire-end voltage in first time and reaches the 90% of accumulator battery voltage, and system then judges that precharge step completes, and connects high voltage supply loop catalyst.After receiving orderly closedown order, first stop electric machine rotation, check motor speed until after being reduced to setting；Detection electrokinetic cell bag temperature further, it may be judged whether need to open cooling fan；Finally disconnect high tension loop catalyst, carry out remaining electricity and release.When system generation catastrophe failure, directly disconnecting high tension loop main contactor, cut off whole high tension loop, if main contactor cannot normally disconnect automatically, detection system can send main contactor fault alarm, points out hand off loop.
High-voltage interlocking detection produces a pumping signal input high-pressure system loop by the high-voltage interlocking detection module being connected with high tension loop, then receives the signal of return, judges the connection state in high-pressure system loop according to the amplitude of return signal.If system master chip does not receive the voltage of return or the brownout of return, then show that the gate oxide integrity in high-pressure system loop is not reaching to expection requirement, and exported system mode by safety monitoring system, send fault alarm.
Insulation monitoring adopts active insulation detecting method, given respectively by isolating transformer and between positive and negative dc bus and vehicle body, inject high direct voltage, measured the pressure drop of divider resistance by insulation monitoring module, calculate positive and negative dc bus insulation against ground resistance value by the difference of dividing potential drop warp.After high tension loop is connected, by insulation detecting circuit, calculate in real time anode over the ground with negative terminal insulating resistance value R0 over the ground, when detect insulating resistance value continue too low after, send positive pole or negative insulation failure alarm signal immediately, judge straight note catalyst cutoff high loop simultaneously.
Claims (1)
1. an electric automobile integrated security detecting device, including high-low pressure voltage detection module, high-voltage interlocking detection module, load condition detection module, insulation monitoring module, precharge detection module；
High-low pressure voltage detection module includes three A/D sampling modules, after high tension loop is connected, three A/D sampling modules respectively to before fuse, before DC-AC inverter with DC-AC inverter after high tension loop magnitude of voltage detect in real time, if the magnitude of voltage detected is within the limits prescribed, then high voltage supply loop normal operation, if detect that voltage is more than maximum or less than minima, show that power battery pack or accumulator overvoltage occur or press fault for a long time, output failure alarm signal, waits pending；
Load condition detection module connects drive motor, detects the load operating conditions of drive motor in real time, and is connected with PC by CAN communication module；
nullPrecharge detection module is by controlling pre-charge-relay K3、High tension loop main relay K1、The power-on and power-off of high tension loop are carried out safety detection by high tension loop main relay K2，Insulation monitoring in insulation monitoring module passes through afterwards，High tension loop is started precharge detection，If the terminal voltage of high tension loop does not reach the 10% of battery tension in maximum pre-charging time，Judge the failure of high tension loop pre-charge process，Disconnect pre-charge-relay，It is simultaneously emitted by fault alarm and waits artificial treatment，If the terminal voltage of high tension loop reaches the 10% of accumulator battery voltage within maximum precharge time，But it is not above 90%，Judge that pre-charge process is insufficient，Again close pre-charge-relay after waiting for a period of time and carry out secondary precharge，If being still not reaching to pre-charge voltage requirement，Judge to be pre-charged unsuccessfully，Disconnect pre-charge contactor，It is simultaneously emitted by fault message；If main Huis wire-end voltage reaches the 90% of accumulator battery voltage being pre-charged in maximum pre-charging time for the first time, judge that precharge step completes, connect high voltage supply loop catalyst, after receiving orderly closedown order, first electric machine rotation is stopped, check that motor speed is until being reduced to setting, detection electrokinetic cell bag temperature, judge whether that cooling fan opened by needs, finally disconnect high tension loop catalyst, carry out remaining electricity to release, when there is catastrophe failure, directly disconnect high tension loop main contactor, cut off whole high tension loop, if main contactor cannot normally disconnect automatically, send main contactor fault alarm, prompting hand off loop；
High-voltage interlocking detection module is connected with high tension loop, carry out high-voltage interlocking detection, high-voltage interlocking detection module produces pumping signal input high-pressure system loop, then the signal of return is received, amplitude according to return signal judges the connection state in high-pressure system loop, if not receiving the voltage of return or the brownout of return, then shows that the gate oxide integrity in high-pressure system loop is not reaching to expection requirement, then export system mode, send fault alarm；
Insulation monitoring module carries out Insulation monitoring, adopt active insulation detecting method, given respectively by isolating transformer and between positive and negative dc bus and vehicle body, inject high direct voltage, the pressure drop of divider resistance is measured by insulation monitoring module, positive and negative dc bus insulation against ground resistance value is calculated by the difference of dividing potential drop warp, after high tension loop is connected, pass through insulation detecting circuit, calculate in real time anode over the ground with negative terminal insulating resistance value R0 over the ground, after detecting that insulating resistance value is lasting too low, send positive pole or negative insulation failure alarm signal, judge straight note catalyst cutoff high loop simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610153755.4A CN105774558A (en) | 2016-03-17 | 2016-03-17 | Integrated safety detection device for electric automobile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610153755.4A CN105774558A (en) | 2016-03-17 | 2016-03-17 | Integrated safety detection device for electric automobile |
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| CN105774558A true CN105774558A (en) | 2016-07-20 |
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| CN201610153755.4A Pending CN105774558A (en) | 2016-03-17 | 2016-03-17 | Integrated safety detection device for electric automobile |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106314169A (en) * | 2016-08-04 | 2017-01-11 | 重庆长安汽车股份有限公司 | High-voltage pre-charging control method and system and electric vehicle |
| CN106646170A (en) * | 2017-01-13 | 2017-05-10 | 厦门金龙旅行车有限公司 | Novel pure electric bus insulation state monitoring system and control method thereof |
| CN108544923A (en) * | 2018-03-06 | 2018-09-18 | 江苏银基烯碳能源科技有限公司 | On-board high-voltage electricity security control apparatus |
| CN108839566A (en) * | 2018-06-15 | 2018-11-20 | 威马智慧出行科技（上海）有限公司 | Vehicle insulation fault processing method, storage medium and electronic equipment |
| CN109177733A (en) * | 2018-09-28 | 2019-01-11 | 上汽通用五菱汽车股份有限公司 | Electric car and its control device, method and computer readable storage medium |
| CN109353295A (en) * | 2018-10-23 | 2019-02-19 | 武汉格罗夫氢能汽车有限公司 | A kind of integrated PDU system of new-energy automobile |
| CN109572600A (en) * | 2018-11-20 | 2019-04-05 | 福建工程学院 | Can detecting vehicle operating condition switching device and control method |
| CN109789790A (en) * | 2016-09-19 | 2019-05-21 | 沃尔沃卡车集团 | Dangerous voltage interlocking loop system |
| CN109830940A (en) * | 2017-11-22 | 2019-05-31 | 湖南中车时代电动汽车股份有限公司 | A kind of circuit protection device and method for electric car |
| CN110243407A (en) * | 2018-04-18 | 2019-09-17 | 蔚来汽车有限公司 | Safe condition display methods and device after electric vehicle collision |
| CN111146769A (en) * | 2018-11-02 | 2020-05-12 | 丰田自动车株式会社 | Power circuit protection device |
| CN112816834A (en) * | 2020-12-24 | 2021-05-18 | 江西博能上饶客车有限公司 | Insulation fault detection system of pure electric passenger car |
| CN113071315A (en) * | 2021-03-10 | 2021-07-06 | 重庆长安汽车股份有限公司 | Method and system for detecting connection integrity of high-voltage electrical system of electric automobile |
| CN114572120A (en) * | 2020-11-30 | 2022-06-03 | 中车时代电动汽车股份有限公司 | Switch box of double-source trolley bus |
| DE102022002083B3 (en) | 2022-06-10 | 2023-10-05 | Mercedes-Benz Group AG | Method for monitoring the operation of a connection arrangement between interlock components and interlock component for use in an interlock loop |
| CN117169778A (en) * | 2023-11-02 | 2023-12-05 | 深圳市国威通电子技术有限公司 | New energy automobile high-voltage short circuit detection method and system |
| CN113484701B (en) * | 2021-06-03 | 2024-01-26 | 度普(苏州)新能源科技有限公司 | Insulation detection method, insulation detection device, computer readable storage medium and processor |
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Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106314169A (en) * | 2016-08-04 | 2017-01-11 | 重庆长安汽车股份有限公司 | High-voltage pre-charging control method and system and electric vehicle |
| CN109789790B (en) * | 2016-09-19 | 2022-09-27 | 沃尔沃卡车集团 | Dangerous voltage interlocking loop system |
| CN109789790A (en) * | 2016-09-19 | 2019-05-21 | 沃尔沃卡车集团 | Dangerous voltage interlocking loop system |
| CN106646170A (en) * | 2017-01-13 | 2017-05-10 | 厦门金龙旅行车有限公司 | Novel pure electric bus insulation state monitoring system and control method thereof |
| CN109830940B (en) * | 2017-11-22 | 2020-08-25 | 湖南中车时代电动汽车股份有限公司 | Circuit protection device and method for electric automobile |
| CN109830940A (en) * | 2017-11-22 | 2019-05-31 | 湖南中车时代电动汽车股份有限公司 | A kind of circuit protection device and method for electric car |
| CN108544923A (en) * | 2018-03-06 | 2018-09-18 | 江苏银基烯碳能源科技有限公司 | On-board high-voltage electricity security control apparatus |
| CN110243407A (en) * | 2018-04-18 | 2019-09-17 | 蔚来汽车有限公司 | Safe condition display methods and device after electric vehicle collision |
| CN108839566A (en) * | 2018-06-15 | 2018-11-20 | 威马智慧出行科技（上海）有限公司 | Vehicle insulation fault processing method, storage medium and electronic equipment |
| CN109177733A (en) * | 2018-09-28 | 2019-01-11 | 上汽通用五菱汽车股份有限公司 | Electric car and its control device, method and computer readable storage medium |
| CN109177733B (en) * | 2018-09-28 | 2022-06-24 | 上汽通用五菱汽车股份有限公司 | Electric vehicle, control device and method thereof, and computer-readable storage medium |
| CN109353295A (en) * | 2018-10-23 | 2019-02-19 | 武汉格罗夫氢能汽车有限公司 | A kind of integrated PDU system of new-energy automobile |
| CN111146769A (en) * | 2018-11-02 | 2020-05-12 | 丰田自动车株式会社 | Power circuit protection device |
| CN109572600A (en) * | 2018-11-20 | 2019-04-05 | 福建工程学院 | Can detecting vehicle operating condition switching device and control method |
| CN114572120A (en) * | 2020-11-30 | 2022-06-03 | 中车时代电动汽车股份有限公司 | Switch box of double-source trolley bus |
| CN112816834A (en) * | 2020-12-24 | 2021-05-18 | 江西博能上饶客车有限公司 | Insulation fault detection system of pure electric passenger car |
| CN113071315A (en) * | 2021-03-10 | 2021-07-06 | 重庆长安汽车股份有限公司 | Method and system for detecting connection integrity of high-voltage electrical system of electric automobile |
| CN113071315B (en) * | 2021-03-10 | 2022-10-11 | 重庆长安汽车股份有限公司 | Method and system for detecting connection integrity of high-voltage electrical system of electric automobile |
| CN113484701B (en) * | 2021-06-03 | 2024-01-26 | 度普(苏州)新能源科技有限公司 | Insulation detection method, insulation detection device, computer readable storage medium and processor |
| DE102022002083B3 (en) | 2022-06-10 | 2023-10-05 | Mercedes-Benz Group AG | Method for monitoring the operation of a connection arrangement between interlock components and interlock component for use in an interlock loop |
| CN117169778A (en) * | 2023-11-02 | 2023-12-05 | 深圳市国威通电子技术有限公司 | New energy automobile high-voltage short circuit detection method and system |
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Application publication date: 20160720 |
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