CN105649967A - Control system and method of electrical vehicle air compressor - Google Patents
Control system and method of electrical vehicle air compressor Download PDFInfo
- Publication number
- CN105649967A CN105649967A CN201610003583.2A CN201610003583A CN105649967A CN 105649967 A CN105649967 A CN 105649967A CN 201610003583 A CN201610003583 A CN 201610003583A CN 105649967 A CN105649967 A CN 105649967A
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- Prior art keywords
- air compressor
- gas
- air
- holder
- piston type
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0027—Pulsation and noise damping means
- F04B39/0033—Pulsation and noise damping means with encapsulations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0027—Pulsation and noise damping means
- F04B39/0055—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes
- F04B39/0061—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes using muffler volumes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B41/00—Pumping installations or systems specially adapted for elastic fluids
- F04B41/02—Pumping installations or systems specially adapted for elastic fluids having reservoirs
Abstract
The invention discloses a control system and method of an electrical vehicle air compressor. The system comprises a control unit, an actuator, a piston type air compressor, an air storage reservoir and a pressure sensor; the piston type air compressor is connected with an air filling port of the air storage reservoir; the pressure sensor is mounted in the air storage reservoir, and used for sensing an air pressure in the air storage reservoir in real time; an output end of the pressure sensor is connected with an input end of the control unit, and an output end of the control unit is connected with the piston type air compressor via the actuator. According to the control method, by means of the control unit, a value of the air pressure in the air storage reservoir is compared with a pressure threshold stored and set in advance, so that whether compressed air is sufficient or not is judged; and the control unit sends a control signal to enable the piston type air compressor to start and stop by means of the actuator, such that the air pressure in the air storage reservoir is maintained within a certain range. The control system and method of the electrical vehicle air compressor have the advantages that invalid running of the air compressor is effectively avoided while sufficient compressed air is supplied, and the loss of electricity is reduced; meanwhile, a muffler and a noise enclosure are added to improve the comfort of the whole vehicle.
Description
Technical field
The present invention relates to electromobile air compressor machine control field, it is specifically related to a kind of electromobile control system of air compressor and control method thereof.
Background technology
Automobile air compressor is the power resources of automobile pneumatic system, is mainly used in as the devices such as Pneumatic braking system provide pressurized air. In orthodox car, the piston of the driven by engine air compressor machine pressurized air that moves reciprocatingly is stored into gas-holder, when the air pressure in gas-holder reaches pressure security value (about the 0.8MPa) of setting, must carrying out off-load process, in the process of this off-load, air compressor machine is still in running condition. On the whole, the orthodox car being assembled with air compressor machine has two kinds of unloading ways. First kind of way is emptying off-load, and air compressor machine is with running of an engine pressurized air, and when in gas-holder, air pressure reaches preset upper limit value, air compressor machine continues pressurized air, but now the safety valve in gas-holder is opened, and in tank, pressurized gas is discharged, it is achieved emptying off-load; When gas-holder pressure is lower than preset lower limit value, in tank, safety valve is closed, and pressurized gas no longer discharges. This kind of method is the simplest, but uneconomical, wastes big energy, does not generally adopt. 2nd kind of mode adopts pressure-regulator, when air pressure in tank arrives preset upper limit value, making the exhaust pressure of air compressor machine equal intake pressure, now the watt consumption of air compressor machine is the 20%-30% of rated output, this kind of mode is comparatively economical, is applied to most of orthodox car. Although the 2nd kind of unloading way improves to some extent, but do not solve the problem of air compressor machine idle running, which results in the waste of energy. Therefore for the pure electric automobile for the purpose of energy-saving and emission-reduction, the air compressor machine control mode on orthodox car is applied to pure electric vehicle and is not well suited for.
For the engine-driven automobile of use, the noise of generation is the highest at 90-110db, and the noise that piston type air compressor produces reaches as high as 90db, and the noise that now air compressor machine produces not is so obvious. Owing to noise during electric motor operation is relatively little, the noise that piston type air compressor produces is exactly a huge noisemaker for electromobile, and the noise of piston type air compressor is primarily of air inlet noise, exhaust noise and mechanical noise composition. In order to avoid this type of noise, Spiralism type air compressor machine all selected by current electromobile. But, Spiralism type air compressor machine and the price difference of piston type air compressor up to ten times cause the raising of production cost.
In addition, with regard to the control mode of air compressor machine, present electromobile all adopts mechanical type baroswitch to be controlled by air compressor machine. Due to the restriction of fatigue strength, the reliability of mechanical type baroswitch work and life-span just big heavy discount, this kind of mechanical switch once there is work fault, can cause vehicle to occur that air pressure sharply declines, and causes damping force not enough, even brake failure.
Summary of the invention
The technical problem to be solved in the present invention is, for prior art above shortcomings, there is provided a kind of electromobile control system of air compressor and control method thereof, the invalid running of air compressor machine in the enough situations of pressurized air that simultaneously efficiently avoid ensureing the pressurized air that supply is enough.
The present invention solves the problems of the technologies described above the technical scheme adopted to be:
A kind of electromobile control system of air compressor, comprise control unit, topworks, piston type air compressor, gas-holder and pressure transmitter, piston type air compressor is filled with mouth with the air of gas-holder and is connected, pressure transmitter is arranged in gas-holder, for responding to gas-holder inner air pressure in real time, pressure transmitter output terminal is connected with control unit input terminus, control unit output terminal is connected with piston type air compressor through topworks, by the running of actuating mechanism controls piston type air compressor whether control unit is used for the pressure signal according to the detection of pressure transmitter in gas-holder.
By such scheme, being also provided with resistant noise-reducing device in the entering and exhaust channel of described piston type air compressor, described resistant noise-reducing device is mutually combined by the pipe of abrupt interface and room and forms.
By such scheme, the periphery of described piston type air compressor is provided with silencing hood, and the shell of silencing hood is made up of air-locked metallic substance, and the centre of silencing hood is damping layer, and the internal layer of silencing hood is equipped with sound-absorbing material.
By such scheme, described topworks adopts pony pump or electromagnetic clutch.
By such scheme, described pressure transmitter adopts resistive pressure sensor.
The control method of electromobile control system of air compressor of the present invention, comprises the steps:
1) first Controlling System initialize;
2) electromobile is in the process of moving, and piston type air compressor is filled with air to gas-holder;
3) pressure transmitter being arranged in gas-holder detects gas-holder inner air pressure in real time, and by gas-holder inner air pressure value transmit to control unit;
4) pressure threshold value of gas-holder inner air pressure value with storing and setting in advance is compared by control unit, judge that whether pressurized air is sufficient, if gas-holder inner air pressure value is greater than the higher limit of pressure threshold value, namely pressurized air is sufficient, control unit sends control signal makes piston type air compressor shut down by topworks, no longer pressurized air, stops being filled with air in gas-holder; If gas-holder inner air pressure value is less than the lower value of pressure threshold value, namely pressurized air is not enough, and control unit sends control signal and makes piston type air compressor running pressurized air by topworks, is filled with air in gas-holder; So moving in circles, when in gas-holder, air pressure is not enough, piston type air compressor operates, and when gas-holder is full of, piston type air compressor shuts down so that gas-holder inner air pressure maintains in certain scope.
By such scheme, the higher limit of described pressure threshold value is about 0.8MPa, and lower value is about 0.6MPa.
The principle of work of the present invention: consider that the speed needed in electromobile operational process is not an invariable value, if the output terminal driving mair motor is sent to piston type air compressor with fixed drive ratio, this will certainly make the rotating speed of piston type air compressor change with mair motor rotation speed change, causes piston type air compressor work situation unstable. The present invention adopts the method setting up pony pump as piston type air compressor propulsion source, pony pump Direct driver piston type air compressor operates, to gas-holder inflation, control, by control unit, the electronic switch control that pony pump running realizes piston type air compressor. To, in the control of noise, the noise behavior for piston type air compressor designs special noise reduction process structure, air inlet noise and exhaust noise are weakened by expansion sourdine, and mechanical noise is weakened by silencing hood.
The useful effect of the present invention:
1, the running of pony pump Direct driver piston type air compressor is set up, the pressure signal that pony pump is fed back according to pressure transmitter in gas-holder by control unit controls, the running that control unit controls air compressor machine according to the pressure signal of pressure transmitter in gas-holder by pony pump is whether, effectively avoid the invalid running of air compressor machine in driving process, achieving when pressurized air is enough, air compressor machine does not operate; When pressurized air is not enough, air compressor machine running supplements pressurized air, by the work situation of control unit control piston formula air compressor machine, eliminates the off-load working order of air compressor machine in orthodox car, has saved energy;
2, the problem excessive for piston type air compressor noise and Spiralism type air compressor machine cost is high, the present invention selects piston type air compressor, and piston type air compressor is carried out structure noise reduction process optimization, it is provided with denoising device, expanded type sourdine is utilized to weaken the Induction and exhaust noises of air compressor machine, utilize silencing hood to weaken the mechanical noise of air compressor machine, improve the comfortable property of whole car with lower cost;
3, for the problem that tradition mechanical type baroswitch working reliability is low and the life-span is short, the present invention all adopt in the middle of whole control loop reliability height, tolerance range high polarity formula trip switch and do not comprise tradition mechanical control faucet, achieve the i.e. control to air compressor machine running, efficiently avoid the invalid running of air compressor machine, decrease kwh loss.
Accompanying drawing explanation
Fig. 1 is the control method flow diagram of electromobile control system of air compressor of the present invention;
Fig. 2 is the structural representation of electromobile control system of air compressor of the present invention;
Fig. 3 is the noise-reducing design schematic diagram of electromobile control system of air compressor of the present invention.
Embodiment
For making the object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is described in further detail. It is to be understood that embodiment described herein is only in order to explain the present invention, do not limit protection scope of the present invention.
With reference to shown in Fig. 2, the electromobile control system of air compressor of the present embodiment comprises: control unit ECU, topworks, piston type air compressor, gas-holder and pressure transmitter, piston type air compressor is filled with mouth with the air of gas-holder and is connected, pressure transmitter is arranged in gas-holder, for responding to gas-holder inner air pressure in real time, pressure transmitter output terminal is connected with control unit ECU input terminus, control unit ECU output terminal is connected with piston type air compressor through topworks, by the running of actuating mechanism controls piston type air compressor whether control unit ECU is used for the pressure signal according to the detection of pressure transmitter in gas-holder.
To, in the control of noise, piston type air compressor be have employed design of optimizing structure targetedly by the present invention. The main noise of piston type air compressor comprises air inlet noise, exhaust noise and mechanical noise, in order to piston type air compressor can be applied on electromobile, piston type air compressor is optimized design.
As shown in Figure 3, the entering and exhaust channel of described piston type air compressor is also provided with resistant noise-reducing device, for the Induction and exhaust noises of air compressor machine is carried out noise reduction process, described resistant noise-reducing device is mutually combined by the pipe of abrupt interface and room and forms, the object reducing noise is reached by filtering out some low-frequency noises, and all effective than resistive muffler in moisture resistant performance, resistance to elevated temperatures, gas flow rate, cleanliness factor etc. Resistant noise-reducing device comprises resonant sound damper and expanding sound damper. Present invention employs expanding sound damper. Expanding sound damper is made up of each expansion chambers and connecting leg, utilizes the expansion of area of section, shrinks the reflection causing sound wave and interfere the object reaching noise elimination, falls cost of making an uproar low.
The periphery of described piston type air compressor is provided with silencing hood, for the mechanical noise of air compressor machine being carried out noise reduction process (mechanical noise process), the shell of silencing hood is made up of air-locked metallic substance with certainweight and rigidity, generally with the steel plate being about 2 mm thick, the centre of cover is damping layer, and the internal layer of cover is equipped with sound-absorbing material. Silencing hood is by being closed air compressor machine bigger for noise, it is possible to intercept unofficial biography and the diffusion of the mechanical noise of air compressor machine, thus to reduce mechanical noise to the impact of surrounding environment, is simply a kind of and effective method. As shown in Figure 3, by air compressor machine being sealed reach the object fallen and make an uproar.
Described topworks adopts pony pump or electromagnetic clutch, has set up the pony pump of special driven plunger formula air compressor machine in the embodiment illustrated in fig. 2.
Described pressure transmitter adopts resistive pressure sensor.
With reference to the control method flow diagram of Fig. 1, the control method of electromobile control system of air compressor of the present invention, comprises the steps:
1) first Controlling System initialize;
2) electromobile is in the process of moving, and piston type air compressor is filled with air to gas-holder;
3) pressure transmitter being arranged in gas-holder detects gas-holder inner air pressure in real time, and the electrical signal by gas-holder inner air pressure value P(gas-holder air pressure signal) it is passed to control unit ECU;
4) by the pressure threshold value of gas-holder inner air pressure value P with storing and setting in advance, (higher limit P1 is about 0.8MPa to control unit ECU, lower value P0 is about 0.6MPa) compare, judge that whether pressurized air is sufficient, if gas-holder inner air pressure value P is greater than the higher limit P1 of pressure threshold value, namely pressurized air is sufficient, control unit sends control signal makes piston type air compressor shut down by topworks, no longer pressurized air, stops being filled with air in gas-holder; If gas-holder inner air pressure value is less than the lower value of pressure threshold value, namely pressurized air is not enough, and control unit sends control signal and makes piston type air compressor running pressurized air by topworks, is filled with air in gas-holder; So moving in circles, when in gas-holder, air pressure is not enough, piston type air compressor operates, and when gas-holder is full of, piston type air compressor shuts down so that gas-holder inner air pressure maintains in certain scope and (achieves the controlled control of closed loop to air compressor machine running).
The present invention directly adopts the running of a pony pump Direct driver piston type air compressor, the start and stop of piston type air compressor are realized by control pony pump work, such that it is able to the pony pump specified speed making selection is identical with the specified speed of piston type air compressor, when air pressure in gas-holder is not enough, piston type air compressor can be operated at full capacity rapidly, it is achieved fast aeration. This kind of control mode is ideal, ensure that piston type air compressor is in optimum Working, compared to the working order of air compressor machine in orthodox car, piston type air compressor working order in this scheme is more excellent, can inflate to gas-holder more fast, thus the working hour making piston type air compressor need reduces, relatively add the work-ing life of piston type air compressor.
The invalid running of the present invention's piston type air compressor in the enough situations of pressurized air that simultaneously efficiently avoid ensureing the pressurized air that supply is enough. Assuming that choose the energy calculating it when EQ140-3 type air compressor machine is installed on pure electric automobile and consuming, rated output P=1.5Kw, off-load power P 1 is about the 25% of rated output, the average overall travel speed of setting pure electric automobile is 40km/h, then pure electric automobile travels hundred kilometers, compared to electricity Q2=P1 �� t �� (1-1/3)=0.625kW h that Traditional control scheme is saved. That is in theory can when at the uniform velocity travelling 100km with 40km/h at least save power 0.625kW h. Piston type air compressor is carried out noise-reducing design simultaneously, improve the comfortable property of whole car with lower cost.
Obviously, above-described embodiment is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention. For those of ordinary skill in the field, still it is among protection scope of the present invention according to the apparent change extended out of spirit or change of the present invention.
Claims (7)
1. an electromobile control system of air compressor, it is characterized in that, comprise control unit, topworks, piston type air compressor, gas-holder and pressure transmitter, piston type air compressor is filled with mouth with the air of gas-holder and is connected, pressure transmitter is arranged in gas-holder, for responding to gas-holder inner air pressure in real time, pressure transmitter output terminal is connected with control unit input terminus, control unit output terminal is connected with piston type air compressor through topworks, by the running of actuating mechanism controls piston type air compressor whether control unit is used for the pressure signal according to the detection of pressure transmitter in gas-holder.
2. electromobile control system of air compressor according to claim 1, it is characterised in that, the entering and exhaust channel of described piston type air compressor is also provided with resistant noise-reducing device, described resistant noise-reducing device is mutually combined by the pipe of abrupt interface and room and forms.
3. electromobile control system of air compressor according to claim 1, it is characterized in that, the periphery of described piston type air compressor is provided with silencing hood, and the shell of silencing hood is made up of air-locked metallic substance, the centre of silencing hood is damping layer, and the internal layer of silencing hood is equipped with sound-absorbing material.
4. electromobile control system of air compressor according to claim 1, it is characterised in that, described topworks adopts pony pump or electromagnetic clutch.
5. electromobile control system of air compressor according to claim 1, it is characterised in that, described pressure transmitter adopts resistive pressure sensor.
6. the control method of one of any described electromobile control system of air compressor of a claim 1 ~ 5, it is characterised in that, comprise the steps:
1) first Controlling System initialize;
2) electromobile is in the process of moving, and piston type air compressor is filled with air to gas-holder;
3) pressure transmitter being arranged in gas-holder detects gas-holder inner air pressure in real time, and by gas-holder inner air pressure value transmit to control unit;
4) pressure threshold value of gas-holder inner air pressure value with storing and setting in advance is compared by control unit, judge that whether pressurized air is sufficient, if gas-holder inner air pressure value is greater than the higher limit of pressure threshold value, namely pressurized air is sufficient, control unit sends control signal makes piston type air compressor shut down by topworks, no longer pressurized air, stops being filled with air in gas-holder; If gas-holder inner air pressure value is less than the lower value of pressure threshold value, namely pressurized air is not enough, and control unit sends control signal and makes piston type air compressor running pressurized air by topworks, is filled with air in gas-holder; So moving in circles, when in gas-holder, air pressure is not enough, piston type air compressor operates, and when gas-holder is full of, piston type air compressor shuts down so that gas-holder inner air pressure maintains in certain scope.
7. the control method of electromobile control system of air compressor according to claim 6, it is characterised in that, the higher limit of described pressure threshold value is about 0.8MPa, and lower value is about 0.6MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610003583.2A CN105649967A (en) | 2016-01-05 | 2016-01-05 | Control system and method of electrical vehicle air compressor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610003583.2A CN105649967A (en) | 2016-01-05 | 2016-01-05 | Control system and method of electrical vehicle air compressor |
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| CN105649967A true CN105649967A (en) | 2016-06-08 |
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| CN201610003583.2A Pending CN105649967A (en) | 2016-01-05 | 2016-01-05 | Control system and method of electrical vehicle air compressor |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106183721A (en) * | 2016-08-11 | 2016-12-07 | 重庆工商大学 | Electric automobile air-conditioning system |
| CN106870339A (en) * | 2016-12-08 | 2017-06-20 | 台州市德瑞压缩机有限公司 | A kind of pneumatic power system of new-energy automobile |
| CN109099468A (en) * | 2018-09-25 | 2018-12-28 | 广东美的白色家电技术创新中心有限公司 | A kind of micro-wave oven |
| CN110107475A (en) * | 2019-04-23 | 2019-08-09 | 东风商用车有限公司 | A kind of pressurization disengaging type air compressor system |
| CN110382316A (en) * | 2018-02-13 | 2019-10-25 | Ls美创有限公司 | The agriculture working vehicle for having air feeder |
| US11384752B2 (en) | 2018-02-13 | 2022-07-12 | Ls Mtron Ltd. | Agricultural work vehicle having air supply device |
| CN117341655A (en) * | 2023-12-06 | 2024-01-05 | 临工重机股份有限公司 | Inflation system control method and device, vehicle and storage medium |
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| CN110382316A (en) * | 2018-02-13 | 2019-10-25 | Ls美创有限公司 | The agriculture working vehicle for having air feeder |
| CN110382316B (en) * | 2018-02-13 | 2022-05-24 | Ls美创有限公司 | Agricultural work vehicle with air supply device |
| US11384752B2 (en) | 2018-02-13 | 2022-07-12 | Ls Mtron Ltd. | Agricultural work vehicle having air supply device |
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| CN110107475A (en) * | 2019-04-23 | 2019-08-09 | 东风商用车有限公司 | A kind of pressurization disengaging type air compressor system |
| CN117341655A (en) * | 2023-12-06 | 2024-01-05 | 临工重机股份有限公司 | Inflation system control method and device, vehicle and storage medium |
| CN117341655B (en) * | 2023-12-06 | 2024-02-06 | 临工重机股份有限公司 | Inflation system control method and device, vehicle and storage medium |
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Application publication date: 20160608 |
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