CN209479642U - Vacuum boost system and vehicle - Google Patents
Vacuum boost system and vehicle Download PDFInfo
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- CN209479642U CN209479642U CN201822240131.3U CN201822240131U CN209479642U CN 209479642 U CN209479642 U CN 209479642U CN 201822240131 U CN201822240131 U CN 201822240131U CN 209479642 U CN209479642 U CN 209479642U
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Abstract
The utility model provides a kind of vacuum boost system and vehicle, the vacuum boost system of the utility model includes vacuum booster, vacuum chamber is equipped in the vacuum booster, the vacuum boost system further includes electronic vacuum pump, the electronic vacuum pump is at least two relative to vacuum booster fixed and arranged, and each electronic vacuum pump is connected via different connecting pipelines with vacuum chamber respectively, and switch unit is connected with each electronic vacuum pump, each switch unit is configured to accept external control signal and constitute and open with each electronic vacuum pump, it closes.Vacuum boost system described in the utility model can shorten each electronic vacuum pump single working time, extend the service life of electronic vacuum pump because at least two electronic vacuum pumps are arranged, and motor vehicle braking system is made to have preferable reliability.
Description
Technical field
The utility model relates to new energy vehicle technical field, in particular to a kind of vacuum boost system, the utility model
Further relate to the vehicle that a kind of application has the vacuum boost system.
Background technique
Generally for auxiliary driver's brake, it is disposed with brake assist system on vehicle, is stepped on reducing driver
Required power when dynamic brake system.Vacuum boost system is a kind of common form of brake assist system, vacuum boost system
Main vacuum booster composition, when brake system is not activated, will form vacuum state in vacuum booster, reaches certain
Vacuum degree, when brake system is activated, vacuum booster generates power-assisted using the pressure difference in external atmospheric pressure and booster
Effect, to act on generation brake force simultaneously by vacuum booster and driver, when not having power-assisted, driver touches on the brake more tired
Difficulty, or even be difficult to complete.
In traditional fuel-engined vehicle, the vacuum in vacuum booster be formed by motor intake manifold, and due to
New-energy automobile is by motor drive, and no manifold vacuumizes, therefore in new-energy automobile in vacuum booster
Vacuum is usually to be formed by the vacuum pump additionally arranged, but the vacuum pump of vehicle is usually one at present, and vacuum pumping rate has
Limit, in complex working condition, such as when needing frequently braking, vacuum pump needs work long hours, and the single working time it is longer can pair
Its service life causes more serious influence, if electronic vacuum pump breaks down, the damage for being difficult to estimate can be brought to driver
It loses.
Utility model content
In view of this, the utility model is directed to a kind of vacuum boost system, can have preferable using effect.
In order to achieve the above objectives, the technical solution of the utility model is achieved in that
A kind of vacuum boost system comprising:
Vacuum booster, Yu Suoshu vacuum booster is interior to be equipped with vacuum chamber；
Electronic vacuum pump, relative at least two of the vacuum booster fixed and arranged, and each electronic vacuum pump
It is connected respectively via connecting pipeline with the vacuum chamber；It is connected with switch unit with each electronic vacuum pump, it is described to open
Unit is closed to be configured to accept external control signal and constitute opening and closing for each electronic vacuum pump；
Vacuum-ness detecting device is set on the vacuum booster, to constitute the detection to vacuum degree in the vacuum chamber；
Control unit, and the vacuum-ness detecting device electrical coupling, and connected with each switch unit control；The control
Unit processed is configured to accept the detection signal of the vacuum-ness detecting device, and by the detection signal and is stored in the control
Vacuum level threshold in unit processed compares, and issues the external control signal to the switch unit.
Further, the electronic vacuum pump is two.
Further, the switch unit includes the relay being separately connected with each electronic vacuum pump.
Further, described control unit is made of vehicle VCU.
It further, further include the vacuum tank being conducted via vacuum tube and the vacuum chamber, and the vacuum chamber is true
Reciprocal of duty cycle keeps balancing with the vacuum degree in the vacuum tank because of the conducting of the vacuum tube.
Further, each connecting pipeline is connected to via multiple-way valve with the vacuum tube respectively.
Further, further include in it is respectively arranged on each connecting pipeline, to constitute gas by the vacuum tube extremely
First check valve of the electronic vacuum pump one-way flow.
Further, Yu Suoshu vacuum tube is equipped with to constitute gas by the vacuum chamber to the vacuum tank one-way flow
Second one-way valve.
Compared with the existing technology, the utility model has the advantage that
(1) vacuum boost system described in the utility model can be reduced single by the way that at least two electronic vacuum pumps are arranged
The working time of working barrel is conducive to the stability for improving force aid system, keeps away so as to extend the service life of electronic vacuum pump
Exempt to brake caused by because of power-assisted deficiency difficult, influences personnel safety on vehicle.
The another object of the utility model is to propose a kind of vehicle, using there is vacuum as described above on Yu Suoshu vehicle
Force aid system.
The vehicle of the utility model and above-mentioned vacuum boost system beneficial effect having the same, details are not described herein.
Detailed description of the invention
The attached drawing for constituting a part of the utility model is used to provide a further understanding of the present invention, this is practical new
The illustrative embodiments and their description of type are not constituteed improper limits to the present invention for explaining the utility model.?
In attached drawing:
Fig. 1 is the overall structure diagram of vacuum boost system described in the utility model embodiment one；
Description of symbols:
1- vacuum booster, 11- vacuum chamber, 2- electronic vacuum pump, 21- connecting pipeline, the first check valve of 22-, 3- relay
Device, 4- control unit, 5- vacuum tank, 51- vacuum tube, 52- second one-way valve.
Specific embodiment
It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can
To be combined with each other.
The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
Embodiment one
The present embodiment is related to a kind of vacuum boost system, as shown in Figure 1, the vacuum boost system includes vacuum booster 1,
Vacuum chamber 11 is equipped in the vacuum booster 1.The vacuum boost system further includes electronic vacuum pump 2, which is
Relative at least two of 1 fixed and arranged of vacuum booster, and each electronic vacuum pump 2 respectively via different connecting pipelines 21 with
Vacuum chamber 11 is connected, and is connected with switch unit with each electronic vacuum pump 2, and each switch unit is configured to hold
It connects external control signal and constitutes opening and closing for each electronic vacuum pump 2.
In order to which when decision constitutes opening and closing for electronic vacuum pump 2, which further includes vacuum-ness detecting device
And control unit 4, the vacuum-ness detecting device are fixed on vacuum booster 1, to constitute to vacuum in vacuum chamber 11
The detection of degree, the control unit 4 and vacuum-ness detecting device electrical coupling, and control and connect with switch unit.4 quilt of control unit
It is configured to receive the detection signal of vacuum-ness detecting device, and by the vacuum degree in vacuum chamber 11 representated by the detection signal
It is worth compared with the vacuum level threshold being stored in control unit 4, and each electronics is controlled by switch unit according to comparison result
Vacuum pump 2 opens and closes.
In the present embodiment, vacuum booster 1 can be in driver by the pressure difference between vacuum chamber 11 and ambient pressure
Power-assisted is provided when braking for driver.It can refer to existing mature technology as the specific structure of vacuum booster 1, herein no longer
It repeats.
Air in vacuum chamber 11 in vacuum booster 1 is discharged electronic vacuum pump 2, can be with higher vacuum
Degree.For ease of description, the numerical value of vacuum degree in vacuum chamber 11 at this time is known as A, is not made in driver in the present embodiment
When dynamic, the vacuum values in vacuum chamber 11 will stay in that A.After driver takes brake measure, due to needing to pass through vacuum
Pressure difference in chamber 11 between extraneous air pressure does work, therefore, the vacuum after driver takes brake measure, in vacuum chamber 11
Degree can decline.
The volume of vacuum chamber 11 is different, and the decrease speed of vacuum degree is also different in vacuum chamber 11.In order to obtain preferably
Braking effect, avoid power-assisted insufficient, influence traffic safety, can guarantee Brake Energy by way of increasing 11 volume of vacuum chamber
Power.But due to the structure of vacuum booster 1 limits, the volume of vacuum chamber 11 is difficult to increase to meet demand.For this purpose, this implementation
In example, which further includes the vacuum tank 5 being conducted via vacuum tube 51 and vacuum chamber 11 because vacuum chamber 11 with
Vacuum tank 5 is connected via vacuum tube 51, therefore can keep balancing always with the air pressure of vacuum chamber 11 in vacuum tank 5, i.e. vacuum
Degree can also keep balancing.Therefore, the setting of vacuum tank 5 can reach increase in the case where not changing 1 structure of vacuum booster
The effect of 11 volume of vacuum chamber.
After the vacuum degree in vacuum chamber 11 drops to certain value, need to improve the vacuum degree of vacuum chamber 11, in order to true
The power-assisted of empty 1 next time of booster.For ease of description, vacuum values at this time are known as B.Obviously, when in vacuum booster 1
Vacuum degree needs to open electronic vacuum pump 2 when reaching B value, and the vacuum degree in vacuum booster 1 is made to reach A value again.
Since the unlatching of each electronic vacuum pump 2 requires that the vacuum values in vacuum chamber 11 and vacuum tank 5 is made to reach A,
Therefore Single Electron vacuum pump 2 may need the longer single working time, and if 2 long time continuous working of electronic vacuum pump,
Its service life can be seriously affected, it is difficult to match vehicle service life, easily cause dangerous.By the function for increasing electronic vacuum pump 2
Rate shortens its working time, still infeasible for current technology.
Electronic vacuum pump 2 is set as at least two relative to 1 fixed and arranged of vacuum booster, it is true Single Electron can be shortened
The working time of sky 2 singles of pump, effectively to prolong its service life.More specifically, in the present embodiment, which is
Two relative to 1 fixed and arranged of vacuum booster.Certainly, it is also feasible that electronic vacuum pump 2, which is set as three or four,.
Because vacuum tank 5 and vacuum chamber 11 be it is interconnected, by two electronic vacuum pumps 2 respectively with vacuum tank 5
Be connected, be also by the vacuum degree that the conducting of vacuum tank 5 and vacuum chamber 11 improves vacuum chamber 11 it is feasible, at this point, electronics
Vacuum pump 2, vacuum tank 5 and vacuum chamber 11 are in series connection, if but vacuum tank 5 go wrong, will lead to entire vacuum and help
Force system failure, therefore reliability is poor.
For this purpose, the other end of two connecting pipelines 21 being connected with electronic vacuum pump 2 preferably passes through respectively in the present embodiment
It is attached by multiple-way valve, such as triple valve with vacuum tube 51.At this point, vacuum tank 5 and vacuum chamber 11 are in parallel connection, even if
Vacuum tank 5 goes wrong, and vacuum chamber 11 still can effectively work, therefore using the preferred embodiment of the present embodiment, reliability is preferable.
In order to further increase the stability of the vacuum boost system, in the present embodiment, as shown in Figure 1, in each communicating pipe
It is respectively equipped on road 21 to constitute first check valve of the gas by the vacuum tube 51 to 2 one-way flow of electronic vacuum pump
22.Vacuum chamber 11 is connected to ambient atmosphere caused by the setting of each first check valve 22 prevents electronic vacuum pump 2 from failing, this reality
After applying in the vacuum boost system of example the failure of one of two electronic vacuum pumps 2, the validity of vacuum boost system can be still kept, is improved
The safety coefficient of vehicle.
While taking above-mentioned measure, in the present embodiment, on the vacuum tube 51 that vacuum chamber 11 is connect with vacuum tank 5 also
Equipped with to constitute second one-way valve 52 of the gas by vacuum chamber 11 to 5 one-way flow of vacuum tank, the setting of second one-way valve 52 exists
After vacuum tank 5 fails, the sealing of vacuum chamber 11 can be still kept, the stability of the vacuum boost system also can be improved, certainly, at this time
The link position of two connecting pipelines 21 and vacuum tube 51 is preferably split in the two sides of second one-way valve 52.The first above-mentioned check valve
22 can be used existing one-way valve structures with one-way valve structures used by second one-way valve 52, and details are not described herein.
As a preferred embodiment of vacuum-ness detecting device, in the present embodiment, the vacuum-ness detecting device is specifically by pacifying
Vacuum transducer on vacuum booster 1 is constituted, and is passed to the vacuum degree in real-time detection vacuum chamber 11, and by signal
It is handed to control unit 4.It can refer to existing mature technology in the installation on vacuum booster 1 as vacuum transducer, herein no longer
It repeats.
As a preferred embodiment of control unit 4, in the present embodiment, which is made of vehicle VCU, certainly
It can also be made of control chip set in addition, it is apparent that without this necessity.Vacuum level threshold is stored in vehicle VCU,
In the present embodiment, which is A value and B value.The signal detected by the vacuum transducer is transferred to vehicle VCU
Afterwards, the signal is converted vacuum values by vehicle VCU, and with A value compared with B value, when numerical value is more than or equal to A, control
Switch unit closes two electronic vacuum pumps 2, and when numerical value is less than or equal to B, control switch unit opens two electronic vacuum pumps 2.
As a preferred embodiment of switch unit, in the present embodiment, which includes dividing with each electronic vacuum pump 2
The relay 3 not connected, i.e. opening by single relay 3 control Single Electron vacuum pump 2, are closed.Certainly, by single relay 3
It is still feasible for constituting the opening and closing of two electronic vacuum pumps 2 simultaneously.But the operating current of an electronic vacuum pump 2 is probably in 12A
Left and right, when two electronic vacuum pumps 2 work at the same time, electric current is probably in 24A or so.If controlled simultaneously using single relay 3
Two electronic vacuum pumps 2, operating current is bigger, and relay 3 can bear electric current in 40A or so, but relay 3 charges current load
It is frequently attracted, can greatly shorten the service life of relay 3.Vehicle VCU is to the control of relay 3 and relay 3 to electronic vacuum
The opening and closing control of pump 2 can refer to existing mature technology, and details are not described herein.
In conclusion the vacuum boost system of the present embodiment has relatively reliable stability, vehicle can be effectively promoted
Safety coefficient.
Embodiment two
The present embodiment is related to a kind of vehicle, and applying on Yu Suoshu vehicle has vacuum boost system described in embodiment one.
The vehicle of the present embodiment, by vacuum boost system of the application as described in embodiment one, so that brake system has
Preferable stability, higher safety coefficient.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (9)
1. a kind of vacuum boost system, characterized by comprising:
Vacuum booster (1), Yu Suoshu vacuum booster (1) is interior to be equipped with vacuum chamber (11)；
Electronic vacuum pump (2), relative at least two of the vacuum booster (1) fixed and arranged, and each electronic vacuum
Pump (2) is connected via connecting pipeline (21) with the vacuum chamber (11) respectively；It is connected with each electronic vacuum pump (2)
Switch unit, the switch unit are configured to accept external control signal and constitute opening and closing for each electronic vacuum pump (2)；
Vacuum-ness detecting device is set on the vacuum booster (1), to constitute the inspection to the vacuum chamber (11) interior vacuum degree
It surveys；
Control unit (4), and the vacuum-ness detecting device electrical coupling, and each switch unit control connection；The control
Unit (4) is configured to accept the detection signal of the vacuum-ness detecting device, and by the detection signal and is stored in described
Vacuum level threshold in control unit (4) compares, and issues the external control signal to the switch unit.
2. vacuum boost system according to claim 1, it is characterised in that: the electronic vacuum pump (2) is two.
3. vacuum boost system according to claim 1, it is characterised in that: the switch unit includes and each electronics
The relay (3) that vacuum pump (2) is separately connected.
4. vacuum boost system according to claim 1, it is characterised in that: described control unit (4) is by vehicle VCU structure
At.
5. vacuum boost system according to any one of claim 1 to 4, it is characterised in that: further include via vacuum tube
(51) vacuum tank (5) being conducted with the vacuum chamber (11), and the vacuum degree of the vacuum chamber (11) and the vacuum tank (5)
Interior vacuum degree keeps balancing because of the conducting of the vacuum tube (51).
6. vacuum boost system according to claim 5, it is characterised in that: each connecting pipeline (21) is respectively via more
Port valve is connected to the vacuum tube (51).
7. vacuum boost system according to claim 6, it is characterised in that: further include on each connecting pipeline (21)
It is respectively arranged, with constitute gas by the vacuum tube (51) to the electronic vacuum pump (2) one-way flow the first check valve
(22)。
8. vacuum boost system according to claim 5, it is characterised in that: Yu Suoshu vacuum tube (51) is equipped with to constitute
Gas by the vacuum chamber (11) to the vacuum tank (5) one-way flow second one-way valve (52).
9. a kind of vehicle, it is characterised in that: using just like vacuum described in any item of the claim 1 to 8 on Yu Suoshu vehicle
Force aid system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822240131.3U CN209479642U (en) | 2018-12-28 | 2018-12-28 | Vacuum boost system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822240131.3U CN209479642U (en) | 2018-12-28 | 2018-12-28 | Vacuum boost system and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209479642U true CN209479642U (en) | 2019-10-11 |
Family
ID=68129137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822240131.3U Active CN209479642U (en) | 2018-12-28 | 2018-12-28 | Vacuum boost system and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209479642U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114592960A (en) * | 2021-02-24 | 2022-06-07 | 长城汽车股份有限公司 | Voltage abnormity protection method and device, storage medium and electronic equipment |
| CN114750738A (en) * | 2021-01-08 | 2022-07-15 | 广州汽车集团股份有限公司 | Vacuum pump control method and device for braking system and vehicle braking system |
-
2018
- 2018-12-28 CN CN201822240131.3U patent/CN209479642U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114750738A (en) * | 2021-01-08 | 2022-07-15 | 广州汽车集团股份有限公司 | Vacuum pump control method and device for braking system and vehicle braking system |
| CN114592960A (en) * | 2021-02-24 | 2022-06-07 | 长城汽车股份有限公司 | Voltage abnormity protection method and device, storage medium and electronic equipment |
| CN114592960B (en) * | 2021-02-24 | 2023-01-31 | 长城汽车股份有限公司 | Voltage abnormity protection method and device, storage medium and electronic equipment |
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