CN209208744U - A kind of braking of battery electric vehicle auxiliary system - Google Patents
A kind of braking of battery electric vehicle auxiliary system Download PDFInfo
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- CN209208744U CN209208744U CN201821930703.4U CN201821930703U CN209208744U CN 209208744 U CN209208744 U CN 209208744U CN 201821930703 U CN201821930703 U CN 201821930703U CN 209208744 U CN209208744 U CN 209208744U
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- vacuum
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- braking
- electric vehicle
- vacuum controller
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Abstract
The utility model provides a kind of braking of battery electric vehicle auxiliary system, comprising: vacuum booster, vacuum air storage tank, vacuum controller, pressure switch and vacuum pump.First output end of the vacuum controller is connected with the control terminal of the vacuum pump.The pressure switch is serially connected between the first input end of the vacuum controller and vehicle ground, and the pressure switch is closed when the gas pressure of vacuum air storage tank is lower than setting vacuum threshold, makes the first input end low level of the vacuum controller.The vacuum air storage tank is used to provide vacuum pressure to the vacuum booster, to carry out auxiliary braking to automobile.When the first input end of the vacuum controller is low level, the first output end output high level of the vacuum controller operates the vacuum pump, to vacuumize to the vacuum air storage tank.The utility model can improve the safety and intelligence that electric car uses.
Description
Technical field
The utility model relates to automobile brake technical field more particularly to a kind of braking of battery electric vehicle auxiliary systems.
Background technique
As car ownership gradually increases, the oil consumption and increasingly serious environmental protection pressure increased rapidly forces automobile
Production industry must walk energy-saving and environment-friendly road for development.The vacuum source of the braking system vacuum booster unit of traditional combustion engine car comes
From in motor intake manifold, vacuum is extracted using engine, guarantees the effective of braking system.Pure electric automobile is not sent out
Motivation assembly, braking system lose vacuum servo function due to not having vacuum power source, cause that auxiliary system cannot be carried out in time
It is dynamic, while only the brake force as caused by manpower is unable to satisfy the needs of service brake.Therefore, how on pure electric automobile and
When using vacuum booster unit have important research significance.
Utility model content
The utility model provides a kind of braking of battery electric vehicle auxiliary system, and vacuum helps when solving existing electric vehicle brake
Power device cannot timely auxiliary braking, easily cause safety problem, safety and intelligence that electric car uses can be improved.
In order to achieve the above object, this reality it is novel the following technical schemes are provided:
A kind of braking of battery electric vehicle auxiliary system, comprising: vacuum booster, vacuum air storage tank, vacuum controller, pressure
Switch and vacuum pump；
First output end of the vacuum controller is connected with the control terminal of the vacuum pump；
The pressure switch is serially connected between the first input end of the vacuum controller and vehicle ground, the pressure switch
It is closed when the gas pressure of vacuum air storage tank is lower than setting vacuum threshold, keeps the first input end of the vacuum controller low
Level；
The vacuum air storage tank is used to provide vacuum pressure to the vacuum booster, to carry out auxiliary braking to automobile；
When the first input end of the vacuum controller is low level, the first output end output of the vacuum controller
High level operates the vacuum pump, to vacuumize to the vacuum air storage tank.
Preferably, further includes: pressure sensor；
The output end of the pressure sensor is connected with the second input terminal of the vacuum controller, the pressure sensor
The brake pressure being operated for detecting brake pedal；
When the brake pressure is greater than setting pressure threshold, the vacuum controller controls the vacuum booster fortune
Row.
Preferably, further includes: current sensor；
The output end of the current sensor is connected with the third input terminal of the vacuum controller, the current sensor
For detecting the operating current of the vacuum pump；
When the operating current is greater than setting electric current threshold value, the vacuum controller reports vacuum pump current anomaly to believe
Breath.
Preferably, further includes: voltage sensor；
The output end of the voltage sensor is connected with the 4th input terminal of the vacuum controller, the voltage sensor
For detecting the cell voltage of the power battery of electric car；
When the cell voltage is less than setting voltage threshold, the vacuum controller reports cell voltage abnormal alarm to believe
Breath.
Preferably, further includes: relay and malfunction indicator lamp；
The control terminal of the relay is connected with the second output terminal of the vacuum controller, the input terminal of the relay
It is often electrically connected with vehicle, the output end of the relay is connected with the malfunction indicator lamp；
It is described true when the operating current is greater than setting electric current threshold value or the cell voltage is less than setting voltage threshold
The second output terminal output PWM level signal of empty controller makes the flicker of fault indicating lamps alarm.
Preferably, further includes: entire car controller；
The entire car controller is connected by CAN bus with the vacuum controller；
High level is exported in the first input end of the vacuum controller, and when the operating current of the vacuum pump is zero,
The entire car controller obtains vacuum pump current anomaly information by CAN bus；
When the cell voltage is less than setting voltage threshold, the entire car controller obtains battery electricity by CAN bus
The normal warning message of reduce off-flavor.
Preferably, further includes: combination instrument；
The combination instrument is connected by CAN bus with the vacuum controller；The combination instrument is according to the vacuum
It pumps current anomaly information or cell voltage abnormal alarm information shows fault code.
Preferably, the vacuum controller includes: microprocessor, analog-to-digital conversion module and D/A converter module；
The input terminal of the microprocessor is connected with the output end of the analog-to-digital conversion module, the output of the microprocessor
End is connected with the input terminal of the D/A converter module；
Input terminal of the input terminal of the analog-to-digital conversion module as the vacuum controller, the D/A converter module
Output end of the output end as the vacuum controller.
Preferably, the vacuum controller further include: CAN receiving module；
The microprocessor is connect by serial ports with the CAN receiving module signal, and the vacuum controller passes through described
CAN receiving module and entire car controller carry out information exchange.
Preferably, the microprocessor is single-chip microcontroller.
The utility model provides a kind of braking of battery electric vehicle auxiliary system, using vacuum controller control vacuum pump to true
It is vacuumized in empty air accumulator, the gas pressure in vacuum air storage tank is made to be satisfied with the auxiliary braking of vacuum booster.It solves
When existing electric vehicle brake vacuum booster unit cannot timely auxiliary braking, easily cause safety problem, electric car can be improved
The safety and intelligence used.
Detailed description of the invention
It, below will be to needed in the embodiment attached in order to illustrate more clearly of specific embodiment of the utility model
Figure is briefly described.
Fig. 1: being a kind of braking of battery electric vehicle auxiliary system schematic diagram of the novel offer of this reality.
Appended drawing reference:
K1 pressure switch
J1 relay
Specific embodiment
In order to make those skilled in the art more fully understand the scheme of the utility model embodiment, with reference to the accompanying drawing and
Embodiment is described in further detail the utility model embodiment.
Easily there are problems that providing auxiliary braking to automobile in time current pure electric automobile vacuum boost system.
The utility model provides a kind of braking of battery electric vehicle auxiliary system, using vacuum controller control vacuum pump to vacuum air storage tank
It is inside vacuumized, the gas pressure in vacuum air storage tank is made to be satisfied with the auxiliary braking of vacuum booster.It solves existing electronic
When automobile brake vacuum booster unit cannot timely auxiliary braking, easily cause safety problem, the peace that electric car uses can be improved
Full property and intelligence.
As shown in Figure 1, a kind of braking of battery electric vehicle auxiliary system, comprising: vacuum booster, vacuum air storage tank, vacuum
Controller, pressure switch K1 and vacuum pump.First output end of the vacuum controller is connected with the control terminal of the vacuum pump；
The pressure switch K1 is serially connected between the first input end of the vacuum controller and vehicle ground, and the pressure switch K1 is true
It is closed when the gas pressure of empty air accumulator is lower than setting vacuum threshold, makes the low electricity of the first input end of the vacuum controller
It is flat.The vacuum air storage tank is used to provide vacuum pressure to the vacuum booster, to carry out auxiliary braking to automobile.Described
When the first input end of vacuum controller is low level, the first output end output high level of the vacuum controller makes described true
Sky pump operating, to be vacuumized to the vacuum air storage tank.
Specifically, vacuum booster forms connected space by snorkel and vacuum air storage tank, and vacuum controller passes through pressure
Pressure signal in power switch monitors vacuum air storage tank.When pressure inside the tank is lower than external atmosphere pressure, driver tramples braking and steps on
Plate will acquire the power-assisted of braking；Vacuum controller control vacuum pump is then needed to carry out pumping behaviour to vacuum air storage tank when negative pressure deficiency
Make, maintains the negative pressure state of vacuum tank.The vacuum source of the system energy real-time ensuring vacuum booster, enables in automobile brake
It is normally carried out auxiliary braking, safety and intelligence that electric car uses can be improved.
The system further include: the second of pressure sensor, the output end of the pressure sensor and the vacuum controller
Input terminal is connected, and the pressure sensor is for detecting the brake pressure that brake pedal is operated.It is greater than in the brake pressure
When setting pressure threshold, the vacuum controller controls the vacuum booster operation.
The system further include: current sensor.The third of the output end of the current sensor and the vacuum controller
Input terminal is connected, and the current sensor is used to detect the operating current of the vacuum pump.It is greater than setting in the operating current
When current threshold, the vacuum controller reports vacuum pump current anomaly information.
In practical applications, whether the operating of vacuum pump may normally directly affect vehicle safety, if vacuum pump is not
It works, will cause vacuum booster can not be normally carried out auxiliary braking.And the operating current of vacuum pump is able to detect vacuum pump
Operating status.
The system further include: voltage sensor.The 4th of the output end of the voltage sensor and the vacuum controller
Input terminal is connected, and the voltage sensor is used to detect the cell voltage of the power battery of electric car.In the cell voltage
When less than setting voltage threshold, the vacuum controller reports cell voltage abnormal alarm information.
In practical applications, the normal power supply of power battery may make the cell voltage of output lower than certain because of various failures
Voltage, this, which may cause, can not normally provide the operating of vacuum pump, therefore, necessary for the real-time monitoring of cell voltage.
The system further include: relay J1 and malfunction indicator lamp.The control terminal and the vacuum control of the relay J1
The second output terminal of device is connected, and the input terminal of the relay J1 is often electrically connected with vehicle, the output end of the relay J1 and
The malfunction indicator lamp is connected.It is greater than setting electric current threshold value in the operating current or the cell voltage is less than setting voltage threshold
When value, the second output terminal output PWM level signal of the vacuum controller makes the flicker of fault indicating lamps alarm.
The system further include: entire car controller.The entire car controller passes through CAN bus and the vacuum controller phase
Even.High level is exported in the first input end of the vacuum controller, and when the operating current of the vacuum pump is zero, it is described whole
Vehicle controller obtains vacuum pump current anomaly information by CAN bus.When the cell voltage is less than setting voltage threshold, institute
It states entire car controller and cell voltage abnormal alarm information is obtained by CAN bus.
The system further include: combination instrument.The combination instrument is connected by CAN bus with the vacuum controller；Institute
It states combination instrument and fault code is shown according to the vacuum pump current anomaly information or cell voltage abnormal alarm information.
Further, the vacuum controller includes: microprocessor, analog-to-digital conversion module and D/A converter module.It is described micro-
The input terminal of processor is connected with the output end of the analog-to-digital conversion module, and the output end of the microprocessor and the digital-to-analogue turn
The input terminal for changing the mold block is connected.Input terminal of the input terminal of the analog-to-digital conversion module as the vacuum controller, the number
Output end of the output end of mould conversion module as the vacuum controller.
Further, the vacuum controller further include: CAN receiving module.The microprocessor by serial ports with it is described
The connection of CAN receiving module signal, the vacuum controller carry out information friendship by the CAN receiving module and entire car controller
Mutually.
In practical applications, the microprocessor can be single-chip microcontroller, and the production of Freescale company can be used in model
MC9S08 series monolithic.
As it can be seen that the utility model provides a kind of braking of battery electric vehicle auxiliary system, vacuum is controlled using vacuum controller
Pump makes the gas pressure in vacuum air storage tank be satisfied with the auxiliary system of vacuum booster to vacuumizing in vacuum air storage tank
It is dynamic.Solve when existing electric vehicle brake vacuum booster unit cannot timely auxiliary braking, easily cause safety problem, electricity can be improved
The safety and intelligence that electrical automobile uses.
The structure, features, and effects of the present invention is described in detail according to diagrammatically shown embodiment above, with
Upper described is only the preferred embodiment of the utility model, but the present invention does not limit the scope of implementation as shown in the drawings, it is all according to
Change or equivalent example modified to equivalent change made by conception according to the utility model, still without departing from specification and figure
When showing covered spirit, it should be within the protection scope of the present utility model.
Claims (10)
1. a kind of braking of battery electric vehicle auxiliary system characterized by comprising vacuum booster, vacuum air storage tank, vacuum control
Device, pressure switch and vacuum pump processed；
First output end of the vacuum controller is connected with the control terminal of the vacuum pump；
The pressure switch is serially connected between the first input end of the vacuum controller and vehicle ground, and the pressure switch is true
It is closed when the gas pressure of empty air accumulator is lower than setting vacuum threshold, makes the low electricity of the first input end of the vacuum controller
It is flat；
The vacuum air storage tank is used to provide vacuum pressure to the vacuum booster, to carry out auxiliary braking to automobile；
When the first input end of the vacuum controller is low level, the high electricity of the first output end output of the vacuum controller
It is flat to operate the vacuum pump, to be vacuumized to the vacuum air storage tank.
2. braking of battery electric vehicle auxiliary system according to claim 1, which is characterized in that further include: pressure sensor；
The output end of the pressure sensor is connected with the second input terminal of the vacuum controller, and the pressure sensor is used for
The brake pressure that detection brake pedal is operated；
When the brake pressure is greater than setting pressure threshold, the vacuum controller controls the vacuum booster operation.
3. braking of battery electric vehicle auxiliary system according to claim 2, which is characterized in that further include: current sensor；
The output end of the current sensor is connected with the third input terminal of the vacuum controller, and the current sensor is used for
Detect the operating current of the vacuum pump；
When the operating current is greater than setting electric current threshold value, the vacuum controller reports vacuum pump current anomaly information.
4. braking of battery electric vehicle auxiliary system according to claim 3, which is characterized in that further include: voltage sensor；
The output end of the voltage sensor is connected with the 4th input terminal of the vacuum controller, and the voltage sensor is used for
Detect the cell voltage of the power battery of electric car；
When the cell voltage is less than setting voltage threshold, the vacuum controller reports cell voltage abnormal alarm information.
5. braking of battery electric vehicle auxiliary system according to claim 4, which is characterized in that further include: relay and event
Hinder indicator light；
The control terminal of the relay is connected with the second output terminal of the vacuum controller, the input terminal of the relay with it is whole
Vehicle is often electrically connected, and the output end of the relay is connected with the malfunction indicator lamp；
When the operating current is greater than setting electric current threshold value or the cell voltage is less than setting voltage threshold, the vacuum control
The second output terminal output PWM level signal of device processed makes the flicker of fault indicating lamps alarm.
6. braking of battery electric vehicle auxiliary system according to claim 5, which is characterized in that further include: entire car controller；
The entire car controller is connected by CAN bus with the vacuum controller；
High level is exported in the first input end of the vacuum controller, and when the operating current of the vacuum pump is zero, it is described
Entire car controller obtains vacuum pump current anomaly information by CAN bus；
When the cell voltage is less than setting voltage threshold, the entire car controller is different by CAN bus acquisition cell voltage
Normal warning message.
7. braking of battery electric vehicle auxiliary system according to claim 6, which is characterized in that further include: combination instrument；
The combination instrument is connected by CAN bus with the vacuum controller；The combination instrument is according to the vacuum pump electricity
Throat floater information or cell voltage abnormal alarm information show fault code.
8. braking of battery electric vehicle auxiliary system according to claim 7, which is characterized in that the vacuum controller packet
It includes: microprocessor, analog-to-digital conversion module and D/A converter module；
The input terminal of the microprocessor is connected with the output end of the analog-to-digital conversion module, the output end of the microprocessor with
The input terminal of the D/A converter module is connected；
Input terminal of the input terminal of the analog-to-digital conversion module as the vacuum controller, the output of the D/A converter module
Hold the output end as the vacuum controller.
9. braking of battery electric vehicle auxiliary system according to claim 8, which is characterized in that the vacuum controller also wraps
It includes: CAN receiving module；
The microprocessor is connect by serial ports with the CAN receiving module signal, and the vacuum controller is connect by the CAN
It receives module and entire car controller carries out information exchange.
10. braking of battery electric vehicle auxiliary system according to claim 9, which is characterized in that the microprocessor is single
Piece machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821930703.4U CN209208744U (en) | 2018-11-22 | 2018-11-22 | A kind of braking of battery electric vehicle auxiliary system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821930703.4U CN209208744U (en) | 2018-11-22 | 2018-11-22 | A kind of braking of battery electric vehicle auxiliary system |
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| Publication Number | Publication Date |
|---|---|
| CN209208744U true CN209208744U (en) | 2019-08-06 |
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ID=67460760
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821930703.4U Active CN209208744U (en) | 2018-11-22 | 2018-11-22 | A kind of braking of battery electric vehicle auxiliary system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111252057A (en) * | 2019-12-25 | 2020-06-09 | 浙江零跑科技有限公司 | Braking system and control strategy for new energy vehicle |
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2018
- 2018-11-22 CN CN201821930703.4U patent/CN209208744U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111252057A (en) * | 2019-12-25 | 2020-06-09 | 浙江零跑科技有限公司 | Braking system and control strategy for new energy vehicle |
| CN111252057B (en) * | 2019-12-25 | 2021-05-28 | 浙江零跑科技有限公司 | Braking system and control strategy for new energy vehicle |
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