CN102390279A - Safe control loop of electric automobile - Google Patents
Safe control loop of electric automobile Download PDFInfo
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- CN102390279A CN102390279A CN2011102810298A CN201110281029A CN102390279A CN 102390279 A CN102390279 A CN 102390279A CN 2011102810298 A CN2011102810298 A CN 2011102810298A CN 201110281029 A CN201110281029 A CN 201110281029A CN 102390279 A CN102390279 A CN 102390279A
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- 230000005669 field effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 13
- 239000003990 capacitor Substances 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 description 8
- 239000011449 brick Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
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- 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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a safe control loop of an electric automobile, comprising a high-voltage battery packet, a battery management system, an inverter and a motor, wherein a battery pack in the high-voltage battery packet is serially connected with a safety switch K1; a high-voltage master relay J3, a pre-charging relay J1, a pre-charging resistor R2 and a pre-charging capacitor C1 are serially accessed into two poles of the high-voltage battery packet to form a pre-charging loop orderly; and a switch tube Q1 and a power resistor R1 are serially connected and then accessed into two ends of the pre-charging capacitor C1 to form a leakage loop. Since the method and structure are adopted, the invention has the advantages that: 1 the safe control loop can pre-charge the entire loop while ensuring start, and also discharge by the power resistor R1 while cutting off the circuit; 2 the safe control loop fully utilizes original spare parts of the high-voltage loop of the electric automobile and has low cost; and 3 the safe control loop fully ensures that the entire high-voltage loop is totally cut off by redundancy measurers and ensures the safety of the serviceman.
Description
Relate to the field
The present invention relates to hybrid vehicle or pure electric automobile, particularly a kind of safety control loop of electronlmobil.
Background technology
Follow development of global economy; The consumption of petroleum amount increases day by day, and oil is as non-renewable resources, and what just becoming is in short supply day by day; Under such overall situation; Various new-energy automobiles arise at the historic moment, and particularly oil electric mixed dynamic automobile, hybrid vehicle are vigorously advocated under the form of low-carbon (LC) life universal day by day in country.
Because the mixed power electric car power system is different from traditional fuel-engined vehicle; The general high-pressure system that goes up hectovolt even several hectovolts that exists in the car load; Therefore, for the safe handling problem of electronlmobil, particularly the electrical safety when maintenance becomes the emphasis problem of each big automobile vendor thinking.
If desired electronlmobil is carried out the words of circuit maintenance at present; It only is the power supply of cut off high power brick; But can't discharge for electric weight residual in the circuit, cause service personnel contact in the process of maintenance, cause irremediable personal property damage.
When electronlmobil was overhauled, the remaining capacity that thoroughly how to discharge in the high tension loop was the problem that prior art need solve.
Summary of the invention
The present invention provides a kind of safety control loop of electronlmobil, can guarantee vehicle inspection and test, not hot line work of maintainer, thereby has ensured the safety of testing staff and check implement.
For achieving the above object, technical scheme of the present invention is that a kind of safety control loop of electronlmobil comprises high-tension battery bag, battery management system, inverter, motor, it is characterized in that: seal in safety switch K1 in the battery pack of described high-tension battery bag; The formation precharge loop, the two poles of the earth that high pressure main relay J3, pre-charge-relay J1, pre-charge resistance R2, precharge cond C1 connect successively and insert the high-tension battery bag; The two ends that precharge cond C1 is inserted in switching valve Q1, power resistor R1 series connection back constitute bleed-off circuit, thereby precharge are carried out in whole loop not only can start the time, and when cutting off circuit, utilize power resistor R1 to discharge.
The switching of described battery management system control pre-charge-relay J1, high pressure main relay J2, J3 and switching valve Q1 realizes the precharge in whole loop and the function of releasing through the master cock state.
Described battery management system is controlled high-voltage relay J3 when automobile starting at first closure, pre-charge-relay J 1 follow closed; Give precharge cond C1 charging; When C1 voltage value reaches power brick terminal voltage 90% when above; It is closed to control high pressure main relay J2 again, and pre-charge-relay J 1 breaks off, thereby accomplishes pre-charge process.
Master cock pipe Q1 when stopping is closed for described battery management system; Precharge cond C1 is through switching valve Q1, power resistor R1 discharge; Battery management system detects the magnitude of voltage of precharge cond C 1; When magnitude of voltage is reduced to the safety voltage scope, battery management system master cock pipe Q1 breaks off, thereby accomplishes the process of releasing.
Described pre-charge-relay J1, pre-charge resistance R2 are parallelly connected with high pressure main relay J2; When the automobile normal operation; High pressure main relay J2 closure is thrown pre-charge-relay J1, pre-charge resistance R2 away, closes the pre-charge process of loop circuit, guarantees whole loop normal operation.
Described switching valve Q1 is power field effect transistor or insulated gate bipolar transistor, thereby has guaranteed, switching valve Q1 only just can conducting when safety switch K1 breaks off.
Described safety switch K1 is a normally closed switch.
Described precharge capacitor C 1 inserts the two ends of inverter.
A kind of safety control loop of electronlmobil owing to adopt above-mentioned method and structure, the invention has the advantages that: 1, when guaranteeing to start, the precharge while is carried out in whole loop, can also when cutting off circuit, utilize power resistor R1 to discharge; 2, made full use of the original parts of electronlmobil high tension loop, cost is low; 3, adopt redundant measure, guarantee that fully whole high tension loop cuts off fully, guarantee maintainer's safety.
Description of drawings
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is done further detailed explanation;
Fig. 1 is the circuit diagram in the safety control loop of a kind of electronlmobil of the present invention;
Fig. 2 is the safety switch K1 circuit diagram in the safety control loop of a kind of electronlmobil of the present invention;
In Fig. 1-2,1, the high-tension battery bag; 2, battery management system; 3, inverter; 4, motor.
The specific embodiment
As shown in Figure 1, comprise high-tension battery bag 1, battery management system 2, inverter 3, motor 4, it is characterized in that: seal in safety switch K1 in the battery pack of described high-tension battery bag 1; The formation precharge loop, the two poles of the earth that high pressure main relay J3, pre-charge-relay J1, pre-charge resistance R2, precharge cond C1 connect successively and insert high-tension battery bag 1; The two ends that precharge cond C1 is inserted in switching valve Q1, power resistor R1 series connection back constitute bleed-off circuit, thereby precharge are carried out in whole loop not only can start the time, and when cutting off circuit, utilize power resistor R1 to discharge.
Pre-charge-relay J1, pre-charge resistance R2 are parallelly connected with high pressure main relay J2; When the automobile normal operation; High pressure main relay J2 closure is thrown pre-charge-relay J1, pre-charge resistance R2 away, closes the pre-charge process of loop circuit, guarantees whole loop normal operation.Precharge capacitor C 1 inserts the two ends of inverter 3.
The switching of battery management system 2 control pre-charge-relay J1, high pressure main relay J2, J3 and switching valve Q1 realizes the precharge in whole loop and the function of releasing through the master cock state.Switching valve Q1 is power field effect transistor or insulated gate bipolar transistor, thereby has guaranteed, switching valve Q1 only just can conducting when safety switch K1 breaks off.
The present invention comprises safety switch K1, high pressure main relay J2, high pressure main relay J3, precharge loop, bleed-off circuit.Safety switch K1 is a normally closed switch, adopts the manually operated mode to carry out port in the time of maintainer's maintenance vehicle and connects; High pressure main relay J2, high pressure main relay J3 cut off high-tension battery bag 1 and whole power system fully; Bleed-off circuit consumes the form of electric weight remaining in the precharge electric capacity through heat; The phenomenons such as electric shock, sparking that prevent to meet accident at maintenance process have been guaranteed the safety of whole maintenance process.
In the embodiment as shown in Figure 1, pre-charge resistance R2, precharge cond C1, pre-charge-relay J1 and high pressure main relay J3 constitute the precharge loop; High-power switch tube Q1, power resistor R1 constitute bleed-off circuit; Safety switch K1, high pressure main relay J2, high pressure main relay J3 constitute safe loop.
Safety switch K1 was normally off when car load normally used, and only in maintenance, was opened it by the maintainer, and maintenance is accomplished to be needed its recovery.The precharge loop guarantees that high pressure main relay J2, J3 safety insert the high voltage power system; Working process is: when ignition key is positioned at the KeyOn position, and the precharge loop works, high pressure main relay J3 is at first closed, pre-charge-relay J 1 is then closed; Give precharge cond C1 charging; When C1 voltage value reaches power brick terminal voltage 90% when above, high pressure main relay J2 is closed, and pre-charge-relay J1 breaks off; Accomplish pre-charge process, determine the size of pre-charge current by the resistance size of pre-charge resistance R2.
Earial drainage process: when ignition key is positioned at the KeyOff position; High pressure main relay J2, J3 break off, and the voltage at precharge this moment cond C1 two ends is about 90% of power brick terminal voltage, and precharge cond C1 appearance value is very high; General hundreds of uf is to thousands of uf; Its electric weight speed of form consumption through the electric capacity self-discharge is very slow, when service worker contacting capacitor two ends, can cause the generation of electric shock accidents.In the high pressure control loop, increased bleed-off circuit to this phenomenon; When stopping, be connected in parallel on precharge cond C1 two ends through switching valve Q1 series connection power resistor R1; Closed through battery management system 2 master cock pipe Q1, precharge cond C1 is through switching valve Q1, power resistor R1 discharge, and battery management system 2 detects the magnitude of voltage of precharge cond C1; When magnitude of voltage is reduced to the safety voltage scope, battery management system 2 master cock pipe Q1 break off.
Adopt said method, can guarantee fully that high tension loop breaks off fully, safety control is provided, avoid the generation of electric shock accidents for detecting the maintainer.
Combine accompanying drawing that the present invention has been carried out exemplary description above; Obviously the concrete realization of the present invention does not receive the restriction of aforesaid way; As long as the various improvement of having adopted technical scheme of the present invention to carry out, or directly apply to other occasion without improvement, all within protection scope of the present invention.
Claims (8)
1. the safety control loop of an electronlmobil comprises high-tension battery bag (1), battery management system (2), inverter (3), motor (4), it is characterized in that: seal in safety switch (K1) in the battery pack of described high-tension battery bag (1); High pressure main relay (J3), pre-charge-relay (J1), pre-charge resistance (R2), precharge cond (C1) are connected successively and are inserted the two poles of the earth of high-tension battery bag (1); The two ends of precharge cond (C1) are inserted in switching valve (Q1), power resistor (R1) series connection back.
2. the safety control loop of a kind of electronlmobil according to claim 1 is characterized in that: the switching of described battery management system (2) control pre-charge-relay (J1), high pressure main relay (J2, J3) and switching valve (Q1).
3. the safety control loop of a kind of electronlmobil according to claim 1 is characterized in that: described pre-charge-relay (J1), pre-charge resistance (R2) are parallelly connected with high pressure main relay (J2).
4. the safety control loop of a kind of electronlmobil according to claim 1 and 2; It is characterized in that: described battery management system (2) is controlled high pressure main relay (J3) when automobile starting at first closure, pre-charge-relay (J1) are then closed; Give precharge cond (C1) charging; When precharge cond (C1) voltage value reaches high-tension battery bag (1) terminal voltage 90% when above, control high pressure main relay (J2) closure again, pre-charge-relay (J1) is broken off.
5. the safety control loop of a kind of electronlmobil according to claim 1 and 2; It is characterized in that: described battery management system (2) is master cock pipe (Q1) closure when stopping; Precharge cond (C1) is through switching valve (Q1), power resistor (R1) discharge; Battery management system (2) detects the magnitude of voltage of precharge cond (C1), and when magnitude of voltage is reduced to the safety voltage scope, battery management system (2) master cock pipe (Q1) breaks off.
6. the safety control loop of a kind of electronlmobil according to claim 1 and 2, it is characterized in that: described switching valve (Q1) is power field effect transistor or insulated gate bipolar transistor.
7. the safety control loop of a kind of electronlmobil according to claim 1 and 2, it is characterized in that: described safety switch (K1) is a normally closed switch.
8. the safety control loop of a kind of electronlmobil according to claim 1 is characterized in that: the two ends of described precharge electric capacity (C1) access inverter (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102810298A CN102390279A (en) | 2011-09-21 | 2011-09-21 | Safe control loop of electric automobile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011102810298A CN102390279A (en) | 2011-09-21 | 2011-09-21 | Safe control loop of electric automobile |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103552479A (en) * | 2013-11-11 | 2014-02-05 | 镇江中研电控有限公司 | Vehicle power assembly and control circuit thereof |
| CN104626996A (en) * | 2013-11-11 | 2015-05-20 | 比亚迪股份有限公司 | Bus capacitance discharging system for electric automobile and control method of bus capacitance discharging system |
| CN104827986A (en) * | 2014-04-09 | 2015-08-12 | 北汽福田汽车股份有限公司 | Hybrid electric vehicle and switch protection device of high-voltage circuit thereof |
| CN104903139A (en) * | 2012-07-28 | 2015-09-09 | 大众汽车有限公司 | Method for deactivating a high voltage system of a motor vehicle |
| CN105102260B (en) * | 2013-05-17 | 2016-12-07 | 奥迪股份公司 | The precharge of motor vehicles high-voltage fence |
| CN104600761B (en) * | 2013-10-30 | 2017-07-11 | 北汽福田汽车股份有限公司 | The control method and the automobile with it of inverter electric capacity precharge |
| CN107284242A (en) * | 2016-03-31 | 2017-10-24 | 比亚迪股份有限公司 | The high pressure of electric vehicle moves back method for electrically and device |
| CN107539148A (en) * | 2017-08-28 | 2018-01-05 | 奇瑞汽车股份有限公司 | The dynamical system and electric automobile of electric automobile |
| CN109476266A (en) * | 2016-07-08 | 2019-03-15 | 戴姆勒股份公司 | Battery apparatus for automobile |
| CN109510291A (en) * | 2018-12-28 | 2019-03-22 | 中国重汽集团济南动力有限公司 | A kind of electric machine controller bus capacitor preliminary filling bleeder |
| CN109641528A (en) * | 2016-11-15 | 2019-04-16 | 宝马股份公司 | Pyrotechnic switch and intermediate circuit discharge system |
| CN109716580A (en) * | 2016-09-08 | 2019-05-03 | 三星Sdi株式会社 | Battery pack |
| CN110588435A (en) * | 2019-09-20 | 2019-12-20 | 宝能(广州)汽车研究院有限公司 | High-voltage control system of electric automobile and high-voltage power-on control method thereof |
| CN111332124A (en) * | 2020-04-04 | 2020-06-26 | 东风汽车集团有限公司 | Fuel cell system bleeder circuit based on two-stage protection |
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Cited By (21)
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| CN104903139B (en) * | 2012-07-28 | 2019-07-26 | 大众汽车有限公司 | The method of high-pressure system for invalid maneuvering vehicle |
| US9873331B2 (en) | 2012-07-28 | 2018-01-23 | Volkwagen Ag | Method for deactivating a high voltage system of a motor vehicle |
| CN104903139A (en) * | 2012-07-28 | 2015-09-09 | 大众汽车有限公司 | Method for deactivating a high voltage system of a motor vehicle |
| CN105102260B (en) * | 2013-05-17 | 2016-12-07 | 奥迪股份公司 | The precharge of motor vehicles high-voltage fence |
| CN104600761B (en) * | 2013-10-30 | 2017-07-11 | 北汽福田汽车股份有限公司 | The control method and the automobile with it of inverter electric capacity precharge |
| CN103552479A (en) * | 2013-11-11 | 2014-02-05 | 镇江中研电控有限公司 | Vehicle power assembly and control circuit thereof |
| CN104626996B (en) * | 2013-11-11 | 2017-02-08 | 比亚迪股份有限公司 | Bus capacitance discharging system for electric automobile and control method of bus capacitance discharging system |
| CN104626996A (en) * | 2013-11-11 | 2015-05-20 | 比亚迪股份有限公司 | Bus capacitance discharging system for electric automobile and control method of bus capacitance discharging system |
| CN104827986B (en) * | 2014-04-09 | 2017-03-15 | 北汽福田汽车股份有限公司 | Hybrid vehicle and its switching protection of high-tension circuit |
| CN104827986A (en) * | 2014-04-09 | 2015-08-12 | 北汽福田汽车股份有限公司 | Hybrid electric vehicle and switch protection device of high-voltage circuit thereof |
| CN107284242A (en) * | 2016-03-31 | 2017-10-24 | 比亚迪股份有限公司 | The high pressure of electric vehicle moves back method for electrically and device |
| CN109476266A (en) * | 2016-07-08 | 2019-03-15 | 戴姆勒股份公司 | Battery apparatus for automobile |
| CN109716580A (en) * | 2016-09-08 | 2019-05-03 | 三星Sdi株式会社 | Battery pack |
| US11152649B2 (en) | 2016-09-08 | 2021-10-19 | Samsung Sdi Co., Ltd. | Battery pack |
| CN109716580B (en) * | 2016-09-08 | 2022-05-13 | 三星Sdi株式会社 | Battery pack |
| CN109641528A (en) * | 2016-11-15 | 2019-04-16 | 宝马股份公司 | Pyrotechnic switch and intermediate circuit discharge system |
| CN107539148A (en) * | 2017-08-28 | 2018-01-05 | 奇瑞汽车股份有限公司 | The dynamical system and electric automobile of electric automobile |
| CN109510291A (en) * | 2018-12-28 | 2019-03-22 | 中国重汽集团济南动力有限公司 | A kind of electric machine controller bus capacitor preliminary filling bleeder |
| CN110588435A (en) * | 2019-09-20 | 2019-12-20 | 宝能(广州)汽车研究院有限公司 | High-voltage control system of electric automobile and high-voltage power-on control method thereof |
| CN111332124A (en) * | 2020-04-04 | 2020-06-26 | 东风汽车集团有限公司 | Fuel cell system bleeder circuit based on two-stage protection |
| CN111332124B (en) * | 2020-04-04 | 2021-09-10 | 东风汽车集团有限公司 | Fuel cell system bleeder circuit based on two-stage protection |
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Application publication date: 20120328 |