CN101954868A - Collision protection device and method of electromobile - Google Patents
Collision protection device and method of electromobile Download PDFInfo
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- CN101954868A CN101954868A CN 201010518029 CN201010518029A CN101954868A CN 101954868 A CN101954868 A CN 101954868A CN 201010518029 CN201010518029 CN 201010518029 CN 201010518029 A CN201010518029 A CN 201010518029A CN 101954868 A CN101954868 A CN 101954868A
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Abstract
The invention relates to a collision protection device of an electromobile, comprising a control function unit, a collision induction function unit and a collision protection function unit, wherein the collision induction function unit and the collision protection function unit are respectively connected with the control function unit, and the collision protection function unit is also connected between a motor controller and a drive power supply. The invention also relates to a collision protection method of the electromobile. When collision happens, the collision induction function unit sends a collision control signal to the control function unit, the control function unit outputs a low level to the collision protection function unit, and a circuit between the motor controller and the drive power source is powered off by controlling the collision protection function unit. The collision protection device and method of the electromobile can effectively avoid continuous output of high-voltage electricity after the collision of the electromobile happens, protect personnel in the electromobile against injuries caused by electricity leakage and short circuit of a power system, simultaneously protect the whole important power system and effectively improve the safety performance of the electromobile.
Description
Technical field
The present invention relates to the electrokinetic technique field, particularly the security protection technology field of electronlmobil specifically is meant a kind of electronlmobil impact protection apparatus and crash protection method.
Background technology
Society is increasing to be paid close attention to along with environmental issue is subjected to, and fuel-engined vehicle is replaced also becoming trend of the times by new-energy automobile, and pure electric automobile and oil electric mixed dynamic automobile have obtained unprecedented opportunity to develop immediately.Electronlmobil or oil electric mixed dynamic automobile include the core component of electronlmobils such as drive motor controller, battery system, power electric power circuit.The more traditional fuel-engined vehicle complexity of the formation of its car load many, how to guarantee effectively that Full Vehicle System is to driving and the safety performance of passenger becomes the technology emphasis and the difficult point of pure electric automobile and oil electric mixed dynamic vehicle complete vehicle system safety.
Present electronlmobil adopts and impact protection apparatus like the regular fuel Automobile mostly.When collision happens; only can provide the protection that avoids violent bump to passenger; and can't reduce or the damage of the car load high-voltage electric power system that crash-avoidance causes, the electric leakage of the high-voltage electric power system that causes thus or short circuit all might cause the secondary injury to the personnel in the electronlmobil.Therefore on electronlmobil, use this type of impact protection apparatus and for the safety performance of car load, have significant deficiency.
Summary of the invention
The objective of the invention is to have overcome above-mentioned shortcoming of the prior art; a kind of cut off high electric power output rapidly when bumping is provided; the protection occupant avoids the injury that electric system electric leakage or short circuit cause; important electric system to car load simultaneously provides protection; effectively improve vehicle safety performance; simple in structure, with low cost, and electronlmobil impact protection apparatus that has wide range of applications and crash protection method.
Electronlmobil comprises drive motor, electric machine controller and driving power, and described driving power connects described drive motor by described electric machine controller.
In order to realize above-mentioned purpose, electronlmobil impact protection apparatus of the present invention has following formation:
This impact protection apparatus comprises controllable function unit, collision sensing functional unit, crash protection functional unit and power supply function unit; described controllable function unit connects described collision sensing functional unit, crash protection functional unit and power supply function unit respectively, and described crash protection functional unit also is connected between described electric machine controller and the described driving power.
In this electronlmobil impact protection apparatus, described crash protection functional unit is an insulated gate bipolar transistor, and the mouth of described controllable function unit connects the grid of described insulated gate bipolar transistor.
In this electronlmobil impact protection apparatus, described crash protection functional unit is connected in the positive pole of described driving power, and with the integrated encapsulation of described driving power.
In this electronlmobil impact protection apparatus, described collision sensing functional unit is the collision alarm binary pair, and the signal output part of described collision alarm binary pair connects the input end of described controllable function unit.
In this electronlmobil impact protection apparatus, described controllable function unit is a push-pull power amplifier circuit.
In this electronlmobil impact protection apparatus, described electronlmobil impact protection apparatus also comprises injury safeguard function unit, and described controllable function unit connects described injury safeguard function unit by the carload communication interface.Described injury safeguard function unit is a safety air bag.
The present invention also provides a kind of and utilizes described electronlmobil impact protection apparatus to carry out the method for crash protection, and this method specifically may further comprise the steps:
When (1) electronlmobil started, output high level in the controllable function unit of described impact protection apparatus was controlled the insulated gate bipolar transistor conducting of described crash protection functional unit, and described collision sensing functional unit begins to carry out the collision alarm sampling;
When (2) described collision sensing functional unit sampled collision alarm, the collision sensing functional unit sent the collision control signal to described controllable function unit;
(3) after described collision control signal is received in described controllable function unit,, control described insulated gate bipolar transistor and turn-off to described crash protection functional unit output low level.
In this electronlmobil crash protection method; described electronlmobil impact protection apparatus also comprises injury safeguard function unit; described controllable function unit connects described injury safeguard function unit by the carload communication interface, and described method is further comprising the steps of in step (3) back:
(4) described controllable function unit sends crash protection start-up control signal by described car load communication interface to described injury safeguard function unit.
The electronlmobil impact protection apparatus and the crash protection method of this invention have been adopted; because it comprises the controllable function unit; and the collision sensing functional unit and the crash protection functional unit of difference connection control function unit; described crash protection functional unit also is connected between described electric machine controller and the described driving power; therefore when collision happens; described collision sensing functional unit samples collision alarm; send the collision control signal to the controllable function unit; after the collision control signal is received in the controllable function unit; to crash protection functional unit output low level, control the circuit between described crash protection functional unit disconnection electric machine controller and the driving power.Thereby avoided the continuation output of high-tension electricity after the collision happens, the protection occupant avoids the injury that electric system electric leakage or short circuit cause, the important electric system to car load simultaneously provides protection, effectively improved the safety performance of electronlmobil.The present invention is simple in structure, and is with low cost, and field of application is comparatively extensive.
Description of drawings
Fig. 1 is the functional unit structural representation of electronlmobil impact protection apparatus of the present invention.
Fig. 2 is that the crash protection functional unit in the electronlmobil impact protection apparatus of the present invention connects the electric machine controller of electronlmobil and the circuit diagram of driving power.
Fig. 3 is the flow chart of steps of electronlmobil crash protection method of the present invention.
The specific embodiment
In order more to be expressly understood technology contents of the present invention, describe in detail especially exemplified by following examples.
Electronlmobil includes drive motor, electric machine controller and driving power, and described driving power connects described drive motor by described electric machine controller, and driving power provides electric power for drive motor, and drive motor is then exported vehicle power.When electronlmobil bumps, the power transmission lines breakage very easily takes place, cause electric leakage or short circuited situation.Electric leakage may cause that car body is charged, makes the occupant that the danger of electric shock be arranged; Short circuit then can cause the partial circuit excess current, and situation on fire takes place, this all serious threat to occupant's life security.Therefore, main thought of the present invention is exactly when collision takes place, and cuts off the circuit output of vehicle immediately, thereby improves the safety performance of car load.
See also shown in Figure 1ly, be the functional unit structural representation of electronlmobil impact protection apparatus of the present invention.
In one embodiment of the invention; described impact protection apparatus comprises controllable function unit, collision sensing functional unit, crash protection functional unit and power supply function unit, and described controllable function unit connects described collision sensing functional unit, crash protection functional unit and power supply function unit respectively.Described collision sensing functional unit is the collision alarm binary pair, and the signal output part of described collision alarm binary pair connects the input end of described controllable function unit.Described crash protection functional unit also is connected between described electric machine controller and the described driving power.This crash protection functional unit is an insulated gate bipolar transistor, and the mouth of described controllable function unit connects the grid of described insulated gate bipolar transistor.
In a kind of more preferably embodiment, as shown in Figure 2, described crash protection functional unit is connected in the positive pole of described driving power, and with the integrated encapsulation of described driving power.
More preferably in the embodiment, described controllable function unit is a push-pull power amplifier circuit at another kind.
In a kind of preferred embodiment, described electronlmobil impact protection apparatus also comprises injury safeguard function unit, and described controllable function unit connects described injury safeguard function unit by the carload communication interface.This injury safeguard function unit is a safety air bag.
The present invention also provides a kind of and utilizes described electronlmobil impact protection apparatus to carry out the method for crash protection, and as shown in Figure 3, in a kind of embodiment of described method, this method specifically may further comprise the steps:
When (1) electronlmobil started, output high level in the controllable function unit of described impact protection apparatus was controlled the insulated gate bipolar transistor conducting of described crash protection functional unit, and described collision sensing functional unit begins to carry out the collision alarm sampling;
When (2) described collision sensing functional unit sampled collision alarm, the collision sensing functional unit sent the collision control signal to described controllable function unit;
(3) after described collision control signal is received in described controllable function unit,, control described insulated gate bipolar transistor and turn-off to described crash protection functional unit output low level.
A kind of preferred embodiment in, described electronlmobil impact protection apparatus also comprises injury safeguard function unit, described electronlmobil crash protection method is further comprising the steps of in step (3) back:
(4) described controllable function unit sends crash protection start-up control signal by described car load communication interface to described injury safeguard function unit.
In actual applications, the electrokinetic cell of electronlmobil generally is placed on the bottom or the afterbody of car load, and the distance of electrokinetic cell and drive motor controller or other high pressure consumers is far away.When electronlmobil bumped, because the power electric power circuit is longer, very easily damaged or fracture made short circuit between itself and car load car body or other controllers, makes car load car body or other controller band high-tension currents.So, after electronlmobil bumps, if the life security that car load car body band high-tension current can greatly threaten driving, passenger; Simultaneously, light current class (controller of 12V or 24V power supply is taked bonding connected to chassis mode and low pressure 12V or the 24V storage battery formation loop substantially) controller that joins of other and car body bonding can damage because of too high reverse voltage.In addition, if drive motor controller is short-circuited or power electric power output line is short-circuited, can make the big electric current of instantaneous generation in the electrokinetic cell loop, electrokinetic cell and power power circuit can be because of transient high-current heatings rapidly, make materials such as car load wire harness, rubber on fire rapidly, aggravation threatens the life of driving, take advantage of personnel, further enlarges the loss that collision is caused.
Therefore; in practical application of the present invention; described electronlmobil impact protection apparatus mainly comprises high-power insulated gate bipolar transistor (IGBT; SEMIX 402GAR066HDS, crash protection functional unit), power circuit (power supply function unit), control circuit (controllable function unit) and collision trigger circuit (collision sensing functional unit).Control circuit is the push-pull amplifier circuit of being made up of aerotron (ZX5T851G or ZX5T951G).Control circuit connects other defencive functions of entire car controller by the car load communication interface.Circuit car load communication interface circuit is CAN communication modes or I/O communication modes.
The car load ignition trigger; the electronlmobil impact protection apparatus is started working; control circuit output drives high signal; driving power IGBT conducting; realization is to the power supply of drive motor controller and other high pressure consumer; by the collision trigger circuit collision signal trigger is sampled simultaneously, the control judgement signal of power IGBT is provided for the control circuit of electronlmobil impact protection apparatus.Travel normally as car load, the collision energizing signal is NO, and the control circuit output of electronlmobil impact protection apparatus drives high signal, and driving power IGBT is in conducting state all the time.Bump as car load; the collision energizing signal is YES; control circuit sends the startup that collision information is used for other defencive functions of entire car controller (as: safety air bag) to car load immediately; control circuit is exported the driving low signal immediately simultaneously; driving power IGBT turn-offs; cut off the high pressure output of car load electrokinetic cell, thereby reduce or eliminate the electric leakage that causes because of collision damage other controller of car load, and to driving, take advantage of personnel that safety guard-safeguard effectively is provided.Also (injury safeguard function unit) provides collision information because this device is directly given other safety blocks of car load, thereby reduced the system cost of car load.
The structure of comparatively preferred electronlmobil impact protection apparatus is that the IGBT with the crash protection functional unit is installed in electrokinetic cell anode equipped at outlet port; and in battery is sealed in power brick; cause on the power IGBT of protection controller with extremely short copper cash at the electrokinetic cell anode; thereby reduce to greatest extent that car load bumps and the badly damaged situation of the shell of power brick under; the possibility of battery short circuit, the safety that effectively improves electronlmobil.
Electronlmobil impact protection apparatus of the present invention and crash protection method have been adopted; because it comprises the controllable function unit; and the collision sensing functional unit and the crash protection functional unit of difference connection control function unit; described crash protection functional unit also is connected between described electric machine controller and the described driving power; therefore when collision happens; described collision sensing functional unit samples collision alarm; send the collision control signal to the controllable function unit; after the collision control signal is received in the controllable function unit; to crash protection functional unit output low level, control the circuit between described crash protection functional unit disconnection electric machine controller and the driving power.Thereby avoided the continuation output of high-tension electricity after the collision happens, the protection occupant avoids the injury that electric system electric leakage or short circuit cause, the important electric system to car load simultaneously provides protection, effectively improved the safety performance of electronlmobil.The present invention is simple in structure, and is with low cost, and field of application is comparatively extensive.
In this specification sheets, the present invention is described with reference to its certain embodiments.But, still can make various modifications and conversion obviously and not deviate from the spirit and scope of the present invention.Therefore, specification sheets and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (9)
1. electronlmobil impact protection apparatus; described electronlmobil comprises drive motor; electric machine controller and driving power; described driving power connects described drive motor by described electric machine controller; it is characterized in that; described impact protection apparatus comprises the controllable function unit; the collision sensing functional unit; crash protection functional unit and power supply function unit; described controllable function unit connects described collision sensing functional unit respectively; crash protection functional unit and power supply function unit, described crash protection functional unit also is connected between described electric machine controller and the described driving power.
2. electronlmobil impact protection apparatus according to claim 1 is characterized in that, described crash protection functional unit is an insulated gate bipolar transistor, and the mouth of described controllable function unit connects the grid of described insulated gate bipolar transistor.
3. electronlmobil impact protection apparatus according to claim 1 is characterized in that described crash protection functional unit is connected in the positive pole of described driving power, and with the integrated encapsulation of described driving power.
4. electronlmobil impact protection apparatus according to claim 1 is characterized in that, described collision sensing functional unit is the collision alarm binary pair, and the signal output part of described collision alarm binary pair connects the input end of described controllable function unit.
5. electronlmobil impact protection apparatus according to claim 1 is characterized in that, described controllable function unit is a push-pull power amplifier circuit.
6. according to each described electronlmobil impact protection apparatus in the claim 1 to 5; it is characterized in that; described electronlmobil impact protection apparatus also comprises injury safeguard function unit, and described controllable function unit connects described injury safeguard function unit by the carload communication interface.
7. electronlmobil impact protection apparatus according to claim 6 is characterized in that, described injury safeguard function unit is a safety air bag.
8. method of utilizing the described electronlmobil impact protection apparatus of claim 1 to carry out crash protection is characterized in that described method specifically may further comprise the steps:
When (1) electronlmobil started, output high level in the controllable function unit of described impact protection apparatus was controlled the insulated gate bipolar transistor conducting of described crash protection functional unit, and described collision sensing functional unit begins to carry out the collision alarm sampling;
When (2) described collision sensing functional unit sampled collision alarm, the collision sensing functional unit sent the collision control signal to described controllable function unit;
(3) after described collision control signal is received in described controllable function unit,, control described insulated gate bipolar transistor and turn-off to described crash protection functional unit output low level.
9. electronlmobil crash protection method according to claim 8; it is characterized in that; described electronlmobil impact protection apparatus also comprises injury safeguard function unit; described controllable function unit connects described injury safeguard function unit by the carload communication interface, and described method is further comprising the steps of in step (3) back:
(4) described controllable function unit sends crash protection start-up control signal by described car load communication interface to described injury safeguard function unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010518029 CN101954868A (en) | 2010-10-25 | 2010-10-25 | Collision protection device and method of electromobile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010518029 CN101954868A (en) | 2010-10-25 | 2010-10-25 | Collision protection device and method of electromobile |
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| CN101954868A true CN101954868A (en) | 2011-01-26 |
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| CN 201010518029 Pending CN101954868A (en) | 2010-10-25 | 2010-10-25 | Collision protection device and method of electromobile |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102303533A (en) * | 2011-06-28 | 2012-01-04 | 青年汽车集团有限公司 | Collision safety control method for pure electric automobile |
| CN102729941A (en) * | 2011-03-29 | 2012-10-17 | 罗伯特·博世有限公司 | Restraining device inside motor vehicle with at least one driver |
| TWI551481B (en) * | 2012-05-01 | 2016-10-01 | Formosa Plastics Transp Corp | Battery electric shock device |
| CN108394278A (en) * | 2018-01-31 | 2018-08-14 | 上海汽车集团股份有限公司 | Electric system high-voltage safety method for releasing after electric automobile collision |
| CN111516496A (en) * | 2020-03-24 | 2020-08-11 | 浙江合众新能源汽车有限公司 | Drive motor casing collision monitoring system and vehicle applying same |
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| JPH05316604A (en) * | 1992-05-07 | 1993-11-26 | Mitsubishi Electric Corp | Safety device for electromobile |
| CN2905538Y (en) * | 2005-12-29 | 2007-05-30 | 东风汽车公司 | Electric safety protection device for hybrid power electric vehicle |
| CN101157337A (en) * | 2007-07-12 | 2008-04-09 | 奇瑞汽车有限公司 | Safety system of mix dynamical automobile |
| EP1758766B1 (en) * | 2004-06-25 | 2011-03-02 | Bayerische Motoren Werke Aktiengesellschaft | Voltage supply device of a control device |
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2010
- 2010-10-25 CN CN 201010518029 patent/CN101954868A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05316604A (en) * | 1992-05-07 | 1993-11-26 | Mitsubishi Electric Corp | Safety device for electromobile |
| EP1758766B1 (en) * | 2004-06-25 | 2011-03-02 | Bayerische Motoren Werke Aktiengesellschaft | Voltage supply device of a control device |
| CN2905538Y (en) * | 2005-12-29 | 2007-05-30 | 东风汽车公司 | Electric safety protection device for hybrid power electric vehicle |
| CN101157337A (en) * | 2007-07-12 | 2008-04-09 | 奇瑞汽车有限公司 | Safety system of mix dynamical automobile |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102729941A (en) * | 2011-03-29 | 2012-10-17 | 罗伯特·博世有限公司 | Restraining device inside motor vehicle with at least one driver |
| CN102303533A (en) * | 2011-06-28 | 2012-01-04 | 青年汽车集团有限公司 | Collision safety control method for pure electric automobile |
| TWI551481B (en) * | 2012-05-01 | 2016-10-01 | Formosa Plastics Transp Corp | Battery electric shock device |
| CN108394278A (en) * | 2018-01-31 | 2018-08-14 | 上海汽车集团股份有限公司 | Electric system high-voltage safety method for releasing after electric automobile collision |
| CN111516496A (en) * | 2020-03-24 | 2020-08-11 | 浙江合众新能源汽车有限公司 | Drive motor casing collision monitoring system and vehicle applying same |
| CN111516496B (en) * | 2020-03-24 | 2022-02-08 | 浙江合众新能源汽车有限公司 | Drive motor casing collision monitoring system and vehicle applying same |
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Application publication date: 20110126 |