Mechanical dryer combined structure for new energy vehicle

Abstract

The utility model discloses a kind of mechanical dryer combination structure for new energy vehicle, including the combination of mechanical dryer and air pressure switch;Mechanical dryer includes control interface;Air pressure switch is arranged at the control interface of mechanical dryer;Wherein air pressure switch can be fed back air pressure data information to VCU by control interface, and then VCU controls the start or stop of the electric air compressor of whole car according to air pressure data information.The utility model discloses the mechanical dryer combination structure for new energy vehicle, can be combined by air pressure switch and mechanical dryer, realize the effective control of VCU to the start-stop of electric air compressor, effectively solve the problem that electric air compressor is always in continuous working state in prior art.

Description

Technical Field

[0001] This utility model relates to the field of new energy vehicle design and manufacturing, and in particular to a mechanical dryer assembly structure for new energy vehicles. Background Technology

[0002] Currently, new energy vehicles are in a stage of rapid development. Since new energy vehicles are equipped with drive motors and lack traditional engines, the air supply required for the braking system needs to be provided by an electric air compressor. For new energy vehicles, the electric air compressor cannot operate continuously; if it does, it will cause significant energy loss and severely impact the driving range. Therefore, the start-stop function of the electric air compressor becomes a crucial issue. Generally, new energy vehicles are equipped with electronically controlled air dryers to address this problem. Figure 1 As shown, the electronically controlled dryer includes an air inlet 1, an air outlet 21, an exhaust outlet 3, and an electronic control assembly unit 10. When the vehicle's brake air pressure is insufficient, the electronic control unit of the electronically controlled dryer 100 outputs a high level. The vehicle's VCU (Vehicle Control Unit) receives the high-level signal, causing the electric air compressor to pump air. The air enters from inlet 1 of the electronically controlled dryer, exits from outlet 21, and is transported to each air storage tank. Once the vehicle's brake air pressure reaches the rated pressure, the electronic control unit outputs a low-level signal to the VCU, which then controls the air compressor to stop working. However, because the electronically controlled dryer integrates the electronic control assembly unit, the overall cost of the electronically controlled dryer is high. Furthermore, since the electronic control assembly unit is an electrical component, the subsequent failure rate and after-sales costs are high. Therefore, this problem has become one of the urgent issues to be solved in this industry.

[0003] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0004] The purpose of this utility model is to provide a mechanical dryer assembly structure for new energy vehicles, which can realize the effective control of the start and stop of the electric air compressor by the VCU through the combination of air pressure switch and mechanical dryer, effectively solving the problem that the electric air compressor is always in a continuous working state in the prior art.

[0005] To achieve the above objectives, this utility model provides a mechanical dryer assembly structure for new energy vehicles, comprising a combination of a mechanical dryer and a pressure switch; the mechanical dryer includes a control interface; the pressure switch is located at the control interface; wherein the pressure switch can feed back air pressure data information to the VCU through the control interface, and the VCU controls the start or stop of the vehicle's electric air compressor based on the air pressure data information.

[0006] In a preferred embodiment, the VCU needs to check the on / off status of the air pressure switch each time the vehicle is powered on.

[0007] In a preferred embodiment, if the VCU detects that the air pressure switch is in the off state and the air pressure value of the air pressure sensor of the front axle air tank or the rear axle air tank is less than or equal to a first set value, the VCU controls the electric air compressor to start and begins timing.

[0008] In a preferred embodiment, under normal circumstances, when the VCU detects that the air pressure value of the air pressure sensor of the front axle air reservoir or the rear axle air reservoir has reached the rated set value and the air pressure switch is in the on state, the VCU controls the electric air compressor to stop.

[0009] In a preferred embodiment, when the VCU detects that the air pressure switch is continuously in the open state and the electric air compressor is in the start state, and the air pressure value of the air pressure sensor of the front axle air tank or the rear axle air tank is greater than the second set value, the VCU determines that the air pressure switch has malfunctioned. At this time, the VCU outputs a fault code and controls the electric air compressor to stop.

[0010] In a preferred embodiment, when the electric air compressor is in the start-up state and the VCU cannot detect the air pressure value information of the air pressure sensor of the front axle air reservoir or the rear axle air reservoir, if the electric air compressor continues to run for more than the first time setting value, the VCU determines that the air pressure switch and the air pressure sensors of the front axle air reservoir and the rear axle air reservoir are all faulty. At this time, the VCU outputs a fault code and controls the electric air compressor to stop.

[0011] In a preferred embodiment, the first setting value is 0.65 MPa, the rated setting value is 1 MPa, the second setting value is 1.1 MPa, and the first time setting value is 5 min.

[0012] In a preferred embodiment, the mechanical dryer further includes an air inlet, a first air outlet, a second air outlet, and an exhaust outlet; the air inlet is connected to the air outlet of the electric air compressor; the air dried by the mechanical dryer is discharged through the first air outlet and the second air outlet; the moisture filtered out of the air is discharged into the atmosphere through the exhaust outlet.

[0013] In a preferred embodiment, the mechanical dryer includes an adjusting screw for adjusting the rated air pressure of the vehicle braking system within a certain range.

[0014] Compared with existing technologies, the mechanical dryer assembly structure for new energy vehicles of this utility model has the following advantages: This solution, by adopting an organic combination of a traditional mechanical dryer and a pressure switch, achieves effective control of the start and stop of the electric air compressor through the VCU, effectively solving the problem that the electric air compressor is always in a continuous working state in existing technologies; since the failure rate of the electronic control unit of the electronically controlled dryer is much higher than that of the pressure switch, the reliability of the components is better; since the electronic control unit needs to be replaced when the electronically controlled dryer fails, while this solution is a combination of mechanical dryer and pressure switch, the failure is mostly due to the pressure switch, which is cheaper than the electronic control unit of the electronically controlled dryer, thus reducing after-sales maintenance costs; it can promptly detect whether the working status of each component is normal, making the control logic reliable. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an electrically controlled dryer according to an embodiment of the prior art;

[0016] Figure 2 This is a schematic diagram of the structure of a mechanical dryer according to an embodiment of this application;

[0017] Figure 3 This is a schematic diagram of the mechanical dryer assembly structure according to an embodiment of the present invention;

[0018] Figure 4 This is a control logic block diagram of a mechanical dryer assembly structure according to an embodiment of the present invention.

[0019] Explanation of key figure labels:

[0020] 100-Mechanical dryer, 1-Air inlet, 21-First air outlet, 22-Second air outlet, 3-Exhaust outlet, 4 / 23-Control interface, 10-Electrical control assembly unit, 101-Adjusting screw, 20-Pressure switch. Detailed Implementation

[0021] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. However, it should be understood that the scope of protection of this utility model is not limited to the specific embodiments.

[0022] Unless otherwise expressly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "comprises" shall be understood to include the stated elements or components without excluding other elements or other components.

[0023] like Figure 3As shown, a mechanical dryer assembly structure for a new energy vehicle according to a preferred embodiment of the present invention includes a combination of a mechanical dryer 100 and a pressure switch 20; the mechanical dryer 100 includes a control interface 4 / 23; the pressure switch 20 is disposed at the control interface 4 / 23; wherein the pressure switch 20 can feed back air pressure data information to the VCU through the control interface 4 / 23, and then the VCU controls the start or stop of the vehicle's electric air compressor (not shown) according to the air pressure data information.

[0024] In some implementations, the VCU needs to check the on / off status of the air pressure switch 20 each time the vehicle is powered on. Under normal circumstances, the air pressure switch 20 is normally off. After the air-using equipment is filled with gas, the control interface 4 / 23 and the exhaust port will be connected together. As long as there is air pressure reaching the air pressure switch 20, the air pressure switch 20 will be connected. After the VCU detects that the air pressure switch 20 is connected, it will stop the electric air compressor. In addition, the feedback signal from the front and rear air tank pressure sensors required by regulations for all vehicles will be used for secondary protection to start and stop the electric air compressor.

[0025] In some implementations, if the VCU detects that the air pressure switch 20 is in the off state and the air pressure value of the air pressure sensor of the front axle air reservoir or the rear axle air reservoir is less than or equal to a first set value, the VCU controls the electric air compressor to start and begins timing.

[0026] In some implementations, under normal circumstances, when the VCU detects that the air pressure value of the air pressure sensor of the front axle air reservoir or the rear axle air reservoir has reached the rated set value, and the air pressure switch 20 is in the on state, the VCU controls the electric air compressor to stop.

[0027] In some implementations, when the VCU detects that the pressure switch 20 is continuously in the open state, the electric air compressor is in the start state, and the air pressure value of the air pressure sensor of the front axle air tank or the rear axle air tank is greater than the second set value, the VCU determines that the pressure switch 20 has malfunctioned. At this time, the VCU outputs a fault code and controls the electric air compressor to stop.

[0028] In some implementations, when the electric air compressor is running and the VCU cannot detect the air pressure value information of the air pressure sensor of the front axle air reservoir or the rear axle air reservoir, if the electric air compressor continues to run for more than the first time setting value, the VCU determines that the air pressure switch 20 and the air pressure sensors of the front axle air reservoir and the rear axle air reservoir are all faulty. At this time, the VCU outputs a fault code and controls the electric air compressor to stop.

[0029] In some implementations, the first setting value is less than or equal to 0.65 MPa, the rated setting value is 1 MPa, the second setting value is greater than or equal to 1.1 MPa, and the first time setting value is 5 minutes.

[0030] In some embodiments, the mechanical dryer 100 further includes an air inlet 1, a first air outlet 21 and a second air outlet 22, and an exhaust outlet 3; the air inlet 1 is connected to the air outlet of the electric air compressor; the air dried by the mechanical dryer 100 is discharged through the first air outlet 21 and the second air outlet 22; the moisture filtered out of the air is discharged into the atmosphere through the exhaust outlet 3.

[0031] In some embodiments, the mechanical dryer 100 includes an adjusting screw 101 for adjusting the rated air pressure of the vehicle braking system within a certain range.

[0032] In conclusion, the mechanical dryer assembly structure for new energy vehicles of this utility model has the following advantages: This solution, by organically combining a traditional mechanical dryer with a pressure switch, achieves effective control of the start and stop of the electric air compressor through the VCU, effectively solving the problem of the electric air compressor being in a continuous working state in the prior art; since the failure rate of the electronic control unit of the electronically controlled dryer is much higher than that of the pressure switch, the reliability of the components is better; since the electronic control unit needs to be replaced when the electronically controlled dryer fails, while this solution is a combination of mechanical dryer and pressure switch, the failure is mostly due to the pressure switch, which is cheaper than the electronic control unit of the electronically controlled dryer, thus reducing after-sales maintenance costs; it can promptly detect whether the working status of each component is normal, making the control logic reliable.

[0033] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the present invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the present invention, as well as various different choices and variations. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. A mechanical dryer assembly structure for new energy vehicles, characterized in that, include: A mechanical dryer, which includes a control interface; as well as A pressure switch is located at the control interface; The air pressure switch can feed back air pressure data to the VCU through the control interface, and then the VCU controls the start or stop of the vehicle's electric air compressor based on the air pressure data.

2. The mechanical dryer assembly structure for new energy vehicles as described in claim 1, characterized in that, Each time the vehicle is powered on, the VCU needs to check the on / off status of the pneumatic switch.

3. The mechanical dryer assembly structure for new energy vehicles as described in claim 2, characterized in that, If the VCU detects that the air pressure switch is in the off state and the air pressure value of the air pressure sensor of the front axle air tank or the rear axle air tank is less than or equal to the first set value, then the VCU controls the electric air compressor to start and starts timing.

4. The mechanical dryer assembly structure for new energy vehicles as described in claim 3, characterized in that, Under normal circumstances, when the VCU detects that the air pressure value of the air pressure sensor of the front axle air reservoir or the rear axle air reservoir has reached the rated set value, and the air pressure switch is in the on state, the VCU controls the electric air compressor to stop.

5. The mechanical dryer assembly structure for new energy vehicles as described in claim 4, characterized in that, When the VCU detects that the air pressure switch is continuously in the open state, the electric air compressor is in the start state, and the air pressure value of the air pressure sensor of the front axle air tank or the rear axle air tank is greater than the second set value, the VCU determines that the air pressure switch has malfunctioned. At this time, the VCU outputs a fault code and controls the electric air compressor to stop.

6. The mechanical dryer assembly structure for new energy vehicles as described in claim 5, characterized in that, When the electric air compressor is in the start-up state, and the VCU cannot detect the air pressure value information of the air pressure sensor of the front axle air reservoir or the rear axle air reservoir, if the electric air compressor continues to run for more than the first time setting value, the VCU will determine that the air pressure switch and the air pressure sensors of the front axle air reservoir and the rear axle air reservoir are all faulty. At this time, the VCU outputs a fault code and controls the electric air compressor to stop.

7. The mechanical dryer assembly structure for new energy vehicles as described in claim 6, characterized in that, The first setting value is 0.65 MPa, the rated setting value is 1 MPa, the second setting value is 1.1 MPa, and the first time setting value is 5 minutes.

8. The mechanical dryer assembly structure for new energy vehicles as described in claim 1, characterized in that, The mechanical dryer also includes: An air inlet, which is connected to the air outlet of the electric air compressor; The air dried by the mechanical dryer is discharged through the first and second air outlets; and The exhaust port is through which the moisture filtered from the air is released into the atmosphere.

9. The mechanical dryer assembly structure for new energy vehicles as described in claim 1, characterized in that, The mechanical dryer includes an adjusting screw for adjusting the rated air pressure of the vehicle braking system within a certain range.

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