CN211335956U - Electric air compressor start-stop system and new energy vehicle thereof - Google Patents
Electric air compressor start-stop system and new energy vehicle thereof Download PDFInfo
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- CN211335956U CN211335956U CN201921943267.9U CN201921943267U CN211335956U CN 211335956 U CN211335956 U CN 211335956U CN 201921943267 U CN201921943267 U CN 201921943267U CN 211335956 U CN211335956 U CN 211335956U
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Abstract
The utility model discloses an electric air compressor start-stop system, which comprises an air compressor, a dryer, a four-loop protection valve, an air cylinder, a pressure detection device and a controller, wherein the air compressor, the dryer, the four-loop protection valve and the air cylinder are connected in sequence to form a control pipeline; the dryer comprises a mechanical pressure regulating valve, an exhaust valve, a reflux valve, a filter sieve and a one-way valve, wherein the filter sieve and the one-way valve are respectively arranged on a control pipeline between the air compressor and the four-loop protection valve; one end of the pressure detection device is connected to a pipeline between the mechanical pressure regulating valve and the exhaust valve, the other end of the pressure detection device is connected with the controller, the pressure detection device is used for monitoring the pipeline pressure between the mechanical pressure regulating valve and the exhaust valve and transmitting a monitoring pressure signal to the controller, and the controller is connected with the air compressor. The start-stop system of the electric air compressor can not only realize the normal work of the dryer, but also realize the start-stop of the air compressor.
Description
Technical Field
The utility model relates to an electric air compressor machine start-stop system and new energy vehicle thereof belongs to car electrical apparatus technical field.
Background
The structure of a dryer of a traditional air braking fuel vehicle is shown in figure 1, and compressed air generated by an air compressor 1 enters an air storage cylinder 5 through a dryer 2 and a four-loop protection valve 3. The mechanical pressure regulating valve 2-1 is used for regulating the system pressure, when the pressure in the air storage cylinder 5 reaches the set system pressure, the mechanical pressure regulating valve 2-1 is opened, the compressed air in the air storage cylinder 5 flows through the mechanical pressure regulating valve 2-1 to reach the exhaust valve 2-2, so that the exhaust valve 2-2 is opened, and at the moment, the compressed air generated by the air compressor 1 is discharged through the exhaust valve 2-2 to realize unloading; meanwhile, compressed air in the air storage cylinder 5 passes through the reflux valve 2-3 and the back flushing filter screen 2-4, and oil and water in the filter screen 2-4 are discharged through the exhaust valve 2-2, so that the regeneration function of the filter screen 2-4 is realized. When the system pressure is reduced to a certain set value, the reflux valve 2-3 is closed, and the regeneration function is ended; when the pressure of the system continuously drops to a certain set value, the mechanical pressure regulating valve 2-1 is closed, then the exhaust valve 2-2 is closed, compressed air generated by the air compressor 1 enters the air storage cylinder 5 through the dryer 2 and the four-loop protection valve 3, and then the process is repeated in a continuous cycle.
The dryer system of the new energy vehicle with air braking basically uses the traditional fuel vehicle on the whole, but because the new energy vehicle has the energy-saving requirement, the air compressor is in a shutdown state after the pressure in the air storage cylinder reaches the set pressure of the system, and when the pressure of the system is lower than a certain set value, the air compressor is restarted to work, so that the energy conservation of the vehicle is realized. The start-stop principle of the traditional air compressor is shown in figure 1, the start-stop signal of the air compressor 1 comes from an air pressure sensor 6 connected with an air storage cylinder 5, and because the air pressure sensor 6 has a larger tolerance range for the detection pressure of the air storage cylinder 5 and the opening value of a mechanical pressure regulating valve 2-1 is also a larger tolerance range, the stop of the air compressor 1 and the unloading relation of a dryer 2 are not matched: if the shutdown pressure of the air compressor 1 is lower than the opening pressure of the mechanical pressure regulating valve 2-1, the air compressor 1 is shut down firstly, the system pressure cannot be further increased, the mechanical pressure regulating valve 2-1 cannot be opened, and the dryer 2 cannot be unloaded and regenerated; if the shutdown pressure of the air compressor 1 is higher than the opening pressure of the mechanical pressure regulating valve 2-1, the mechanical pressure regulating valve 2-1 is opened first, the dryer 2 is unloaded, and the system pressure cannot be further increased, so that the air compressor always works.
Disclosure of Invention
Problem to above-mentioned prior art exists, the utility model provides an electric air compressor machine start-stop system and new energy vehicle thereof can realize the normal work of desicator, can also realize the start-stop of air compressor machine, and the reliability is high.
In order to achieve the above object, the utility model discloses an electric air compressor start-stop system, including air compressor machine, desicator, four return circuit protection valves and gas receiver, air compressor machine, desicator, four return circuit protection valves, gas receiver connect gradually and form the control pipeline, still include pressure detection device and controller;
the dryer comprises a mechanical pressure regulating valve, an exhaust valve, a reflux valve, a filter sieve and a one-way valve, wherein the filter sieve and the one-way valve are respectively arranged on a control pipeline between the air compressor and the four-loop protection valve; one end of the pressure detection device is connected to a pipeline between the mechanical pressure regulating valve and the exhaust valve, the other end of the pressure detection device is connected with the controller, the pressure detection device is used for monitoring the pipeline pressure between the mechanical pressure regulating valve and the exhaust valve and transmitting a monitoring pressure signal to the controller, and the controller is connected with the air compressor.
Preferably, the pressure detection device employs a pressure detection switch or an air pressure sensor.
Preferably, the controller is of the type XGA2108TFF 221-010.
Preferably, a water drain valve is mounted on the air reservoir.
Preferably, one end of the mechanical pressure regulating valve is connected to a pipeline between the one-way valve and the four-loop protection valve, the other end of the mechanical pressure regulating valve is connected with the exhaust valve to form an exhaust branch, one end of the exhaust valve is connected to a pipeline between the air compressor and the filter screen, and the other end of the exhaust valve is communicated with the atmosphere.
Preferably, one end of the backflow valve is connected to a pipeline between the one-way valve and the four-circuit protection valve, and the other end of the backflow valve is connected to a pipeline between the filter screen and the one-way valve.
Additionally, the utility model also provides a new energy vehicle, install on the new energy vehicle electric air compressor machine start-stop system.
Compared with the prior art, the utility model discloses an electric air compressor start-stop system detects the pressure signal between mechanical air-vent valve and discharge valve as the control signal source of air compressor start-stop through pressure detection device, does not need too high precision to realize, and is not high to the component requirement, and the reliability is higher, and the normal function of desicator is not influenced in the start-stop of air compressor machine, can realize the normal work of desicator, can also realize the start-stop of air compressor machine, saves whole car electric energy; in addition, the air compressor is always in a working state, and the air compressor can be stopped until a pressure signal detected by the pressure detection device appears, so that the air supply of the air compressor can be guaranteed to be prior by the control logic, energy is saved, the braking safety is guaranteed, and the start-stop system is simple in structure, low in cost and easy to popularize.
Drawings
FIG. 1 is a schematic diagram of the start-stop principle of a conventional air compressor;
fig. 2 is a schematic diagram of the start-stop principle of the air compressor of the present invention;
FIG. 3 is a flow chart of the start-stop of the air compressor of the present invention;
in the figure: 1. the system comprises an air compressor, 2 parts of a dryer, 2 parts of a mechanical pressure regulating valve, 2 parts of an exhaust valve, 2 parts of 3 parts of a reflux valve, 2 parts of 4 parts of a filter sieve, 2 parts of 5 parts of a one-way valve, 3 parts of a four-loop protection valve, 4 parts of a water drain valve, 5 parts of an air storage cylinder, 6 parts of an air pressure sensor, 7 parts of a pressure detection device, 8 parts of a controller.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the invention and not to limit the scope of the invention.
As shown in fig. 2, the start-stop system of the electric air compressor for the new energy vehicle comprises an air compressor 1, a dryer 2, a four-loop protection valve 3 and an air cylinder 5, wherein a water drain valve 4 is installed on the air cylinder 5, the air compressor 1, the dryer 2, the four-loop protection valve 3 and the air cylinder 5 are sequentially connected to form a control pipeline, and the start-stop system further comprises a pressure detection device 7 and a controller 8;
the dryer 2 comprises a mechanical pressure regulating valve 2-1, an exhaust valve 2-2, a reflux valve 2-3, a filter sieve 2-4 and a one-way valve 2-5, wherein the filter sieve 2-4 and the one-way valve 2-5 are respectively arranged on a control pipeline between the air compressor 1 and the four-loop protection valve 3, an exhaust branch formed by connecting the mechanical pressure regulating valve 2-1 and the exhaust valve 2-2 is connected in parallel with pipelines of the filter sieve 2-4 and the one-way valve 2-5, and a reflux branch where the reflux valve 2-3 is arranged is connected in parallel with a pipeline of the one-way valve 2-5; one end of the pressure detection device 7 is connected to a pipeline between the mechanical pressure regulating valve 2-1 and the exhaust valve 2-2, the other end of the pressure detection device is connected with the controller 8, the pressure detection device 7 is used for monitoring the pipeline pressure between the mechanical pressure regulating valve 2-1 and the exhaust valve 2-2 and transmitting a monitored pressure signal to the controller 8, and the controller 8 is connected with the air compressor 1.
The pressure detection device 7 can be installed on the existing or newly added hole sites of the dryer 2, is easy to develop and can be rapidly produced in mass.
Preferably, the pressure detection device 7 is a pressure detection switch (model number is XGA38LWFW511-22010) or an air pressure sensor (model number is NXG38WLAM 111-26010).
Preferably, the controller 8 is of model XGA2108TFF 221-010.
Preferably, one end of the mechanical pressure regulating valve 2-1 is connected to a pipeline between the one-way valve 2-5 and the four-loop protection valve 3, the other end of the mechanical pressure regulating valve is connected with the exhaust valve 2-2 to form an exhaust branch, one end of the exhaust valve 2-2 is connected to a pipeline between the air compressor 1 and the filter screen 2-4, and the other end of the exhaust valve is open to the atmosphere. One end of the backflow valve 2-3 is connected to a pipeline between the one-way valve 2-5 and the four-loop protection valve 3, and the other end of the backflow valve is connected to a pipeline between the filter screen 2-4 and the one-way valve 2-5.
When in use, as shown in fig. 3, compressed air generated by the air compressor 1 passes through the dryer 2 and the four-circuit protection valve 3 and enters the air storage cylinder 5. The mechanical pressure regulating valve 2-1 is used for regulating the system pressure, when the pressure in the air storage cylinder 5 reaches the set system pressure, the mechanical pressure regulating valve 2-1 is opened, the compressed air in the air storage cylinder 5 flows through the mechanical pressure regulating valve 2-1 to reach the exhaust valve 2-2 and the pressure detection device 7, so that the exhaust valve 2-2 is opened, at the moment, if the air compressor 1 works, the generated compressed air is discharged through the exhaust valve 2-2, and the dryer 2 starts to unload; compressed air in the air storage cylinder 5 passes through a reflux valve 2-3 and a back flushing filter screen 2-4, and oil and water stored in the filter screen 2-4 are discharged through an exhaust valve 2-2, so that the regeneration function of the filter screen is realized; meanwhile, the pressure detecting device 7 outputs a pressure signal (which is always present during the unloading of the dryer 2), and the controller 8 receives the pressure signal to control the air compressor 1 to stop.
When the pressure of the brake system is reduced to a certain set value, the reflux valve 2-3 is closed, and the regeneration function is finished; when the system pressure continues to drop to a certain set value, the mechanical pressure regulating valve 2-1 is closed, then the exhaust valve 2-2 is closed, the dryer 2 finishes unloading, the pressure signal output by the pressure detection device 7 disappears, the controller 8 cannot receive the signal, namely the air compressor 1 is controlled to be in a normal working state, the generated compressed air enters the air storage cylinder 5 through the dryer 2 and the four-loop protection valve 3, and then the process is repeated in a continuous cycle.
The pressure detection device 7 does not output pressure signals when other time during unloading starting and unloading finishing of the dryer 2 is removed, the air compressor 1 is always in a working state, the pressure detection device 7 outputs the pressure signals only when the dryer 2 starts unloading and finishes unloading, the controller 8 receives the signals to control the air compressor 1 to stop, even if a line from the pressure detection device 7 to the controller fails, normal work of the air compressor 1 is not affected, and if other faults do not exist, the air compressor 1 is always in a normal working state, so that the control system can ensure that the air compressor has priority to air supply of a braking system, energy is saved, and vehicle driving safety is ensured.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the present invention.
Claims (7)
1. An electric air compressor start-stop system comprises an air compressor (1), a dryer (2), a four-loop protection valve (3) and an air storage cylinder (5), wherein the air compressor (1), the dryer (2), the four-loop protection valve (3) and the air storage cylinder (5) are sequentially connected to form a control pipeline, and the electric air compressor start-stop system is characterized by further comprising a pressure detection device (7) and a controller (8);
the dryer (2) comprises a mechanical pressure regulating valve (2-1), an exhaust valve (2-2), a backflow valve (2-3), a filter sieve (2-4) and a one-way valve (2-5), the filter sieve (2-4) and the one-way valve (2-5) are respectively installed on a control pipeline between the air compressor (1) and the four-loop protection valve (3), an exhaust branch formed by connecting the mechanical pressure regulating valve (2-1) and the exhaust valve (2-2) is connected with pipelines of the filter sieve (2-4) and the one-way valve (2-5) in parallel, and a backflow branch where the backflow valve (2-3) is located is connected with a pipeline of the one-way valve (2-5) in parallel; one end of the pressure detection device (7) is connected to a pipeline between the mechanical pressure regulating valve (2-1) and the exhaust valve (2-2), the other end of the pressure detection device is connected with the controller (8), the pressure detection device (7) is used for monitoring the pipeline pressure between the mechanical pressure regulating valve (2-1) and the exhaust valve (2-2) and transmitting a monitoring pressure signal to the controller (8), and the controller (8) is connected with the air compressor (1).
2. The start-stop system of an electric air compressor according to claim 1, characterized in that the pressure detection device (7) is a pressure detection switch or an air pressure sensor.
3. The electric air compressor start-stop system according to claim 1, wherein the controller (8) is of type XGA2108TFF 221-010.
4. The start-stop system of an electric air compressor as claimed in claim 1, wherein a water drain valve (4) is installed on the air cylinder (5).
5. The start-stop system of the electric air compressor as claimed in claim 1, wherein one end of the mechanical pressure regulating valve (2-1) is connected to a pipeline between the check valve (2-5) and the four-circuit protection valve (3), the other end of the mechanical pressure regulating valve is connected to the exhaust valve (2-2) to form an exhaust branch, one end of the exhaust valve (2-2) is connected to a pipeline between the air compressor (1) and the filter screen (2-4), and the other end of the exhaust valve is open to the atmosphere.
6. The start-stop system of the electric air compressor as claimed in claim 1, wherein one end of the return valve (2-3) is connected to the pipeline between the check valve (2-5) and the four-circuit protection valve (3), and the other end is connected to the pipeline between the filter screen (2-4) and the check valve (2-5).
7. A new energy vehicle, characterized in that the new energy vehicle is provided with the electric air compressor start-stop system of any one of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921943267.9U CN211335956U (en) | 2019-11-12 | 2019-11-12 | Electric air compressor start-stop system and new energy vehicle thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921943267.9U CN211335956U (en) | 2019-11-12 | 2019-11-12 | Electric air compressor start-stop system and new energy vehicle thereof |
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| CN211335956U true CN211335956U (en) | 2020-08-25 |
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| CN201921943267.9U Active CN211335956U (en) | 2019-11-12 | 2019-11-12 | Electric air compressor start-stop system and new energy vehicle thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110696802A (en) * | 2019-11-12 | 2020-01-17 | 徐州徐工汽车制造有限公司 | Start-stop system and start-stop method of electric air compressor for new energy vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110696802A (en) * | 2019-11-12 | 2020-01-17 | 徐州徐工汽车制造有限公司 | Start-stop system and start-stop method of electric air compressor for new energy vehicle |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211209 Address after: 221000 No.19 Zhujiang East Road, Xuzhou high tech Industrial Development Zone, Jiangsu Province Patentee after: Xuzhou XCMG New Energy Vehicle Co.,Ltd. Address before: 221000 No.19 Zhujiang East Road, Xuzhou high tech Industrial Development Zone, Jiangsu Province Patentee before: XUZHOU XUGONG AUTOMOBILE MANUFACTURING Co.,Ltd. |
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| TR01 | Transfer of patent right |