CN201800559U - Electric vehicle power source safety protection device - Google Patents
Electric vehicle power source safety protection device Download PDFInfo
- Publication number
- CN201800559U CN201800559U CN2010205251643U CN201020525164U CN201800559U CN 201800559 U CN201800559 U CN 201800559U CN 2010205251643 U CN2010205251643 U CN 2010205251643U CN 201020525164 U CN201020525164 U CN 201020525164U CN 201800559 U CN201800559 U CN 201800559U
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- contactor
- battery pack
- control unit
- electric vehicle
- vehicle power
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- 230000004224 protection Effects 0.000 title claims abstract description 16
- 230000015556 catabolic process Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
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Abstract
An electric vehicle power source safety protection device solves the problems that due to high voltage of power sources of electric vehicles, personal safety of drivers and passengers can be threatened directly and power supply battery packs can be damaged once the electric vehicles are in accidents in running. The electric vehicle power source safety protection device comprises a battery pack, a control unit and a contactor control circuit controlled by the control unit, and is characterized in that the control unit is provided with an ignition switch signal input end, a fault signal input end and a collision signal input end, the battery pack includes a plurality of battery cells connected in series, first contactor contacts controlled by the contactor control circuit are respectively connected among the battery cells connected in series, and second contactor contacts which are controlled by the contactor control circuit and used for current-limiting protection are connected to two ends of the battery pack. The electric vehicle power source safety protection device can protect electrical equipment and personal safety of drivers and passengers effectively.
Description
Technical field
The utility model belongs to security protection system, particularly a kind of electric vehicle power sources safety device.
Background technology
Battery-driven car is the new-energy automobile of wideling popularize at present, and its environmental protection, energy-conservation theory enjoy high praise.As the power of battery-driven car, the safe handling of battery is even more important.The voltage of the electrical source of power of battery-driven car is very high usually, and as 72V, 320V etc., these voltages have substantially exceeded human safety voltage (36V).In a single day in the process of using, break down, threaten for driver and crew's the personal safety and the safety of electrical equipment.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of electric vehicle power sources safety device that effective protection can be provided the safety of electrical equipment and driver and crew's personal safety.
The electric vehicle power sources safety device that the utility model relates to; comprise battery pack; control unit and the contactor control circuit of controlling by control unit; its special character is: control unit is provided with ignition lock signal input part, breakdown signal input end and collision alarm input end; described battery components is a plurality of series units; be connected to first contacts of contactor between each series unit, be connected to second contacts of contactor that plays the current-limiting protection effect at the battery pack two ends by the control of contactor control circuit by the control of contactor control circuit.
The utility model has the advantages that: can gather igniting on-off signal, circuit alarm and collision alarm in real time by the ignition lock on the vehicle, battery controller and safety air bag ignition lock or the crash sensor established in addition.Under the vehicle running condition, only behind normal ignition, just make the battery pack in-to-in first contacts of contactor closure, connect battery pack; When the vehicle power consumer is short-circuited, the electric leakage situation, second contacts of contactor of making the battery pack two ends for the control unit signal by battery controller disconnects, battery voltage is reduced to the voltage of each series unit, and each series unit is in off state, thereby prevents and will driver and crew be caused personal injury; When the collision happens accident, enlarge for preventing accident, by control unit battery pack in-to-in first contacts of contactor is disconnected, in time cut off the battery pack home loop, the battery pack global voltage is dropped to below the safety voltage.
The utility model has adopted two utmost point protections that wait, and the control first order of ignition lock signal is protected, and initiatively protects the safety of battery pack and consumer.Circuit failure protection and crash protection are second stage protection, guaranteed after failure accident takes place, effectively to prevent the expansion of fault, and the generation that effectively prevents secondary accident, to avoid personal injury to driver and crew.
Description of drawings
Fig. 1 is schematic circuit diagram of the present utility model.
The specific embodiment
As shown in the figure; the electric vehicle power sources safety device that the utility model relates to; comprise battery pack 7; adopt the control unit 4 of micro controller system and the contactor control circuit of controlling by control unit 45; control unit 4 is provided with ignition lock signal input part 1; breakdown signal input end 2 and collision alarm input end 3; described battery pack 7 is divided into the series unit 6 of a plurality of equipressures; be connected to first contacts of contactor 8 between each series unit 6, be connected to second contacts of contactor 9 that plays the current-limiting protection effect at battery pack 7 two ends by 5 controls of contactor control circuit by 5 controls of contactor control circuit.
During actual the connection, ignition lock signal input part 1, breakdown signal input end 2 are connected with vehicle ignition switch, battery manager respectively, described collision alarm input end 3 and safety air bag ignition lock or the crash sensor that is installed on the vehicle body are connected, and working process is as follows:
1, after control unit 4 collects the ignition lock signal, control unit 4 sends instruction, makes 8 actions of battery pack 7 in-to-ins first contactless switch by contactor control circuit 5, connects battery pack 7.Only after this action is finished, other power up vehicle action and could continue to carry out by adding electric switch.When ignition lock is in off state, and vehicle do not have under the situation of electricity, and battery pack 7 in-to-ins first contacts of contactor 8 is in off state, keeps battery pack 7 in-to-in voltages below safety voltage;
2, (short circuit when control unit 4 collects circuit alarm, shorted to earth etc.), control unit 4 sends instruction, cut off second contacts of contactor 9 that battery pack 7 exports by contactor control circuit 5, cut-out electric power is supplied with, thereby stop the expansion of power plant fault, and driver and crew's personal safety is threatened.This safety method is reversible, promptly after cross-check sum is got rid of the power plant fault, by re-powering of ignition lock, but by the action of control unit 4 de-preservations, powers again.If fault is not removed, even re-power, after control unit 4 detects fault, still can move, cut off electric power and supply with, up to trouble shooting;
3, when control unit 4 collects the collision case signal (collision happens accident), control unit 4 sends instruction, 8 actions of control battery pack 7 in-to-ins first contacts of contactor, battery pack 7 is cut off, disconnect between each series unit 6, avoid battery pack 7 because collision causes the local cell short trouble to other battery expansions, and continue to carry high potential to the outside.This protection is irreversible, and after promptly bumping, vehicle must be got back to maintenance factory, uses diagnostic equipment to remove.
Claims (1)
1. electric vehicle power sources safety device; comprise battery pack; control unit and the contactor control circuit of controlling by control unit; it is characterized in that: control unit is provided with ignition lock signal input part, breakdown signal input end and collision alarm input end; described battery components is a plurality of series units; be connected to first contacts of contactor between each series unit, be connected to second contacts of contactor that plays the current-limiting protection effect at the battery pack two ends by the control of contactor control circuit by the control of contactor control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205251643U CN201800559U (en) | 2010-09-12 | 2010-09-12 | Electric vehicle power source safety protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205251643U CN201800559U (en) | 2010-09-12 | 2010-09-12 | Electric vehicle power source safety protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201800559U true CN201800559U (en) | 2011-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205251643U Expired - Fee Related CN201800559U (en) | 2010-09-12 | 2010-09-12 | Electric vehicle power source safety protection device |
Country Status (1)
| Country | Link |
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| CN (1) | CN201800559U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103723045A (en) * | 2014-02-20 | 2014-04-16 | 合肥国骋新能源汽车技术有限公司 | Monitoring and alarming device for electric vehicle high-voltage power distribution systems |
| CN103786583A (en) * | 2013-07-10 | 2014-05-14 | 惠州市亿能电子有限公司 | Battery management system (BMS) controlling high voltage output according to collision signals |
| CN103863126A (en) * | 2012-12-10 | 2014-06-18 | 现代自动车株式会社 | Power control apparatus for vehicle battery |
| CN104494544A (en) * | 2014-12-25 | 2015-04-08 | 东风汽车公司 | Collision power-off protection system of electromobile |
| CN107438534A (en) * | 2015-04-21 | 2017-12-05 | 大众汽车有限公司 | Method and apparatus for the high-pressure energy system of vehicle |
| CN111293372A (en) * | 2020-02-14 | 2020-06-16 | 宁波吉利汽车研究开发有限公司 | Safety management system and method for battery pack of electric vehicle |
| CN111742234A (en) * | 2018-02-23 | 2020-10-02 | 西门子股份公司 | Ground fault detection |
-
2010
- 2010-09-12 CN CN2010205251643U patent/CN201800559U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103863126A (en) * | 2012-12-10 | 2014-06-18 | 现代自动车株式会社 | Power control apparatus for vehicle battery |
| CN103786583A (en) * | 2013-07-10 | 2014-05-14 | 惠州市亿能电子有限公司 | Battery management system (BMS) controlling high voltage output according to collision signals |
| CN103723045A (en) * | 2014-02-20 | 2014-04-16 | 合肥国骋新能源汽车技术有限公司 | Monitoring and alarming device for electric vehicle high-voltage power distribution systems |
| CN104494544A (en) * | 2014-12-25 | 2015-04-08 | 东风汽车公司 | Collision power-off protection system of electromobile |
| CN104494544B (en) * | 2014-12-25 | 2017-01-18 | 东风汽车公司 | Collision power-off protection system of electromobile |
| CN107438534A (en) * | 2015-04-21 | 2017-12-05 | 大众汽车有限公司 | Method and apparatus for the high-pressure energy system of vehicle |
| US10737576B2 (en) | 2015-04-21 | 2020-08-11 | Volkswagen Aktiengesellschaft | Method and device for a high-voltage energy system of a vehicle |
| CN111742234A (en) * | 2018-02-23 | 2020-10-02 | 西门子股份公司 | Ground fault detection |
| CN111293372A (en) * | 2020-02-14 | 2020-06-16 | 宁波吉利汽车研究开发有限公司 | Safety management system and method for battery pack of electric vehicle |
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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: 20110420 Termination date: 20140912 |
|
| EXPY | Termination of patent right or utility model |