CN103481883A - Vacuum boosting system and method of electric automobile - Google Patents
Vacuum boosting system and method of electric automobile Download PDFInfo
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- CN103481883A CN103481883A CN201310437993.4A CN201310437993A CN103481883A CN 103481883 A CN103481883 A CN 103481883A CN 201310437993 A CN201310437993 A CN 201310437993A CN 103481883 A CN103481883 A CN 103481883A
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- vacuum
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Abstract
The invention provides a vacuum boosting system and method of an electric automobile. The vacuum boosting system comprises a booster connected onto a brake device, a gas storage part connected with the booster, a sensor arranged on the gas storage part and used for detecting the vacuum degree, a vacuum pump connected to the gas storage part and used for adjusting the vacuum degree in the gas storage part and a driving motor capable of driving the electric automobile. The driving motor can enable the electric automobile to slow down or stop through setting when the vacuum degree detected by sensor is smaller than an alarm value. The vacuum boosting system of the electric automobile can assist the brake device to performing braking of the electric automobile and can effectively and actively reduce the running speed or enable the electric automobile to stop when breaking down or being in the dangerous situation, and therefore the safety of passengers is ensured.
Description
Technical field
The present invention relates to a kind of vacuum boost system and method thereof of electronlmobil, it can be used for auxiliary brake braking electronlmobil.
Background technology
As everyone knows, electronlmobil generally adopts vacuum boost system to carry out auxiliary brake braking electronlmobil, makes chaufeur can significantly reduce for the pedal force that operates brake pedal, thereby improves the traveling comfort of chaufeur.
Chinese patent CN102673551A discloses a kind of pure electric automobile electric vacuum booster brake control system, and whether its degree of vacuum detected in the vacuum gas tank by pressure sensor is sufficient.When deficiency appears in the degree of vacuum in the vacuum gas tank, the vacuum servo brake controller will be opened vacuum pump and supplement the degree of vacuum in the vacuum gas tank, thereby guarantees the use safety of this brake control system.In this pure electric automobile driving process, for example fault has appearred between the two in vacuum pump and vacuum gas tank, will cause the degree of vacuum in the vacuum gas tank deficiency to occur, cause this brake control system normally to use, increase personnel's's (comprising chaufeur and passenger) danger by bus.
Summary of the invention
The invention provides a kind of vacuum boost system of electronlmobil, it not only can brake electronlmobil by auxiliary brake, but also can break down or reduce on one's own initiative road speed or parking during dangerous situation at this vacuum boost system, guarantee thus personnel's safety by bus.
According to a first aspect of the invention, provide a kind of vacuum boost system of electronlmobil, it brakes electronlmobil for auxiliary brake.This vacuum boost system comprises: be connected to the servo-unit on brake gear; The gas storage part be connected with servo-unit is provided with the sensor for detection of degree of vacuum on the gas storage part; Be connected in the gas storage part for regulating the vacuum pump of the degree of vacuum in the gas storage part; Can drive the drive motor of electric automobile during traveling.Wherein, when the degree of vacuum in sensor detects the gas storage part is less than setting value, more than vacuum pump is adjusted to setting value by the degree of vacuum in the gas storage part, while after the degree of vacuum detected is less than setting value, being less than alarming value again, controller makes electronlmobil slow down or stop by controlling drive motor.
In one embodiment, the vacuum resistance system also comprises for controlling the controller of vacuum pump, sensor and drive motor.
In one embodiment, the vacuum resistance system also comprises the annunciator given the alarm while for the degree of vacuum in the gas storage part, being less than alarming value.
In one embodiment, the vacuum resistance system also comprises for showing the instrument of the degree of vacuum in the gas storage part.
In one embodiment, the gas storage part comprises air receiver or accumulator tank.
In one embodiment, be provided with check valve between vacuum pump and gas storage part.
According to a second aspect of the invention, provide a kind of vacuum servo method of electronlmobil, comprise step: utilization detects the degree of vacuum in the gas storage part according to the sensor of the vacuum resistance system of first aspect present invention; When the degree of vacuum detected is less than setting value, more than controller control vacuum pump is adjusted to setting value by the degree of vacuum in the gas storage part; When the degree of vacuum detected is less than alarming value, controller makes electronlmobil slow down or stop by controlling drive motor.Wherein, alarming value is less than setting value.
In one embodiment, this vacuum servo method also comprises that when the degree of vacuum detected when sensor is less than alarming value, annunciator gives the alarm.
In this application, setting value selected must guarantee servo-unit effectively auxiliary brake brake this electronlmobil, and alarming value is less than setting value, but alarming value should avoid too approaching setting value, otherwise easily cause vacuum pump also not have enough time to regulate the degree of vacuum in the gas storage part, just start to occur reducing the situations such as the speed of a motor vehicle or parking.
Vacuum boost system according to electronlmobil of the present invention, not only can brake electronlmobil by auxiliary brake, but also can break down or reduce on one's own initiative road speed or parking during dangerous situation at this vacuum boost system, guarantee thus personnel's safety by bus.When unexpected fault occurs, the annunciator of this vacuum boost system can give the alarm.In addition, consider that chaufeur can not accurately judge by alarm the position of fault of electronlmobil, but can determine whether that by the instrument for showing the degree of vacuum in the gas storage part this vacuum boost system breaks down.If result of determination is for break down herein, so just can be so that chaufeur be taked more effective, safer solution.
The accompanying drawing explanation
To the present invention, be described in more detail based on embodiment and with reference to accompanying drawing hereinafter.Wherein:
Fig. 1 schematically illustrates the vacuum boost system according to electronlmobil of the present invention.
In the accompanying drawings, identical parts are used identical Reference numeral.Accompanying drawing is not according to actual scale.
The specific embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
Fig. 1 has shown the vacuum boost system 50 of electronlmobil of the present invention, and it can be used for auxiliary brake 20 braking electronlmobils.This vacuum boost system 50 comprises the servo-unit 3 be connected with brake gear 20, and is connected to the gas storage part 2 on servo-unit 3.Gas storage part 2 also can be described as vacuum gas storage part.Gas storage part 2 is preferably vacuum air receiver or vacuum air storage tank.Be provided with sensor 7 on gas storage part 2.Due to sensor 7 degree of vacuum interior for detection of gas storage part 2, so sensor 7 is preferably vacuum sensor.
In this embodiment, vacuum boost system 50 also comprises vacuum pump 1.Vacuum pump 1 communicates with each other with gas storage part 2, is convenient to thus regulate the degree of vacuum in gas storage part 2.Can be provided with check valve 6 between vacuum pump 1 and gas storage part 2.Check valve 6 can stop the gas of being released from gas storage part 2 by vacuum pump 1 to turn back in gas storage part 2 effectively again.
According to the present invention, this vacuum boost system 50 also comprises controller 8.Controller 8 is connected with sensor 7 with vacuum pump 1 respectively.Controller 8 can be used for controlling the running state of vacuum pump 1.In addition, vacuum boost system 50 also comprises drive motor 9.Drive motor 9 is for driving this electric automobile during traveling.Controller 8 also can be used for controlling the running state of drive motor 9, for example controls the moving velocity of this electronlmobil.If this vacuum boost system 50 breaks down, for example gas storage part 2 gas leakage, vacuum pump 1 damages or sensor 7 lost efficacy, be less than again alarming value after will causing degree of vacuum in gas storage part 2 to be less than setting value.Now, in order to guarantee personnel's safety by bus, controller 8 can make electronlmobil slow down or stop by controlling drive motor 9.
In a preferred embodiment, this vacuum boost system 50 also can comprise annunciator 5 and instrument 4.Annunciator 5 and instrument 4 all can complete corresponding function under the control of controller 8.Annunciator 5 is preferably voice guard, but also may be selected to be indicating alarm, (for example indicator lamp) or other have equipment or the device of prompting function.Because chaufeur can not be judged by the warning of annunciator 5 position of fault of this electronlmobil, therefore can install for demonstrating in real time the instrument 4 of the degree of vacuum situation in gas storage part 2.Can conveniently in the very first time, find whether this vacuum boost system 50 goes wrong like this.
Below introduce the principle of work according to the vacuum boost system 50 of electronlmobil of the present invention.At first the degree of vacuum detected in gas storage part 2 by sensor 7.When the degree of vacuum detected is less than setting value, controller 8 is controlled more than vacuum pumps 1 are adjusted to setting value by the degree of vacuum in gas storage part 2, thus guarantee servo-unit 3 can be effectively, auxiliary brake 20 these electronlmobils of braking safely.
In the driving process of this electronlmobil, following several dangerous situation may appear in this vacuum boost system 50.The first situation is, after vacuum pump 1 damages, can't regulate the degree of vacuum in gas storage part 2, makes its degree of vacuum sooner or later can be lower than alarming value.The second situation is that gas storage part 2 leaks air, and makes the interior degree of vacuum of gas storage part 2 directly lower than alarming value.The third situation is, sensor 7 is unexpected to lose efficacy, and now because can not normally detecting, to cause detecting result be zero to sensor 7.The low vacuum that comprehensive above-mentioned three kinds of dangerous situations all can cause sensor 7 to detect is in alarming value, so the present invention controls the deceleration of this electronlmobil or stop by alarming value, can effectively guarantee personnel's safety by bus.
Vacuum boost system 50 according to electronlmobil of the present invention, it not only can brake electronlmobils by auxiliary brake 20, but also can be effectively at this vacuum boost system 50, break down or reduce on one's own initiative road speed or parking during dangerous situation, guarantee thus personnel's safety by bus.
Although invention has been described with reference to preferred embodiment, without departing from the scope of the invention, can carry out various improvement and can replace parts wherein with equivalent it.Especially, only otherwise have structural hazard, every technical characterictic of mentioning in each embodiment all can combine in any way.The present invention is not limited to disclosed specific embodiment in literary composition, but comprises all technical schemes in the scope that falls into claim.
Claims (9)
1. the vacuum boost system of an electronlmobil, brake described electronlmobil for auxiliary brake, and described vacuum boost system comprises:
Be connected to the servo-unit on described brake gear,
The gas storage part be connected with described servo-unit is provided with the sensor for detection of degree of vacuum on described gas storage part,
Be connected in described gas storage part for regulating the vacuum pump of the degree of vacuum in described gas storage part, when wherein the degree of vacuum in described sensor detects described gas storage part is less than setting value, more than described vacuum pump is adjusted to described setting value by the degree of vacuum in described gas storage part
Can drive the drive motor of described electric automobile during traveling, wherein, described drive motor is set for when the degree of vacuum detected when described sensor is less than alarming value and is made described electronlmobil slow down or stop.
2. vacuum resistance system according to claim 1, is characterized in that, described vacuum resistance system also comprises for controlling the controller of described vacuum pump, sensor and drive motor.
3. vacuum resistance system according to claim 1 and 2, is characterized in that, also comprises the annunciator given the alarm while for the degree of vacuum in described gas storage part, being less than alarming value.
4. according to the described vacuum resistance system of any one in claim 1 to 3, it is characterized in that, also comprise for showing the instrument of the degree of vacuum in the gas storage part.
5. according to the described vacuum resistance system of any one in claim 1 to 4, it is characterized in that, described gas storage part comprises air receiver or accumulator tank.
6. according to the described vacuum resistance system of any one in claim 1 to 5, it is characterized in that, between described vacuum pump and gas storage part, be provided with check valve.
7. the vacuum servo method of an electronlmobil comprises:
Utilization detects the degree of vacuum in the gas storage part according to the sensor of the described vacuum resistance system of any one in claim 1 to 6,
When the degree of vacuum detected is less than setting value, described controller is controlled more than described vacuum pump is promoted to setting value by the degree of vacuum in described gas storage part, makes the described servo-unit can the described brake gear of power-assisted,
When the degree of vacuum detected is less than alarming value, described controller makes described electronlmobil slow down or stop by controlling described drive motor.
8. vacuum resistance method according to claim 7, is characterized in that, also comprises that, when the degree of vacuum detected when described sensor is less than alarming value, described annunciator gives the alarm.
9. according to the described vacuum resistance of claim 7 or 8 method, it is characterized in that, described alarming value is less than described setting value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310437993.4A CN103481883B (en) | 2013-09-24 | 2013-09-24 | The vacuum boost system of a kind of electric automobile and method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310437993.4A CN103481883B (en) | 2013-09-24 | 2013-09-24 | The vacuum boost system of a kind of electric automobile and method thereof |
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| CN103481883A true CN103481883A (en) | 2014-01-01 |
| CN103481883B CN103481883B (en) | 2016-06-08 |
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| CN201310437993.4A Active CN103481883B (en) | 2013-09-24 | 2013-09-24 | The vacuum boost system of a kind of electric automobile and method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105083249A (en) * | 2015-09-22 | 2015-11-25 | 苏州普京真空技术有限公司 | Vacuum booster |
| CN105523031A (en) * | 2015-12-24 | 2016-04-27 | 北京电咖汽车科技有限公司杭州分公司 | Auxiliary safety system used during failure of vacuum system of electric automobile and control method of auxiliary safety system |
| CN105523032A (en) * | 2016-02-26 | 2016-04-27 | 成都雅骏新能源汽车科技股份有限公司 | Electric motorcar vacuum boost control system and control method thereof |
| CN108454458A (en) * | 2018-01-25 | 2018-08-28 | 北京新能源汽车股份有限公司 | A kind of motor control method, device and automobile |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108454458A (en) * | 2018-01-25 | 2018-08-28 | 北京新能源汽车股份有限公司 | A kind of motor control method, device and automobile |
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|---|---|
| CN103481883B (en) | 2016-06-08 |
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Address after: Fifty-seven, Zhuzhou Province, China National hi tech Development Zone, Hunan, Li Yu Industrial Park, district 412007 Patentee after: Zhongche Times Electric Vehicle Co., Ltd. Address before: Fifty-seven, Zhuzhou Province, China National hi tech Development Zone, Hunan, Li Yu Industrial Park, district 412007 Patentee before: Hunan CSR Times Electric Co., Ltd. |
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| CP01 | Change in the name or title of a patent holder |