An electronically controlled air suspension system and control method thereof and vehicle

Abstract

The present invention discloses an electronically controlled air suspension system, a vehicle and a control method of the electronically controlled air suspension system thereof. The device comprises: when there is a normal power voltage input but no ignition, a communication module provides a first trigger signal to the input end of a first power conversion unit through a signal line led out; the first power conversion unit performs voltage conversion based on the normal power voltage and the first trigger signal to obtain a first working voltage; an ECAS main control chip works based on the first working voltage; an output end of the ECAS main control chip provides a second trigger signal; a second power conversion unit performs voltage conversion based on the normal power voltage and the second trigger signal to obtain a second working voltage; and an electrical component works based on the second working voltage. This solution, by changing the ECU power supply circuit of the electronically controlled air suspension of the vehicle, enables the electronically controlled air suspension to work without the need for ignition of the entire vehicle, thereby reducing the power consumption of the vehicle.

Description

Technical Field

[0001] The present invention belongs to the field of vehicle technology, and specifically relates to an electronically controlled air suspension system, a vehicle and a control method of the electronically controlled air suspension system thereof, and more particularly to a low-power electronically controlled air suspension system, a vehicle having the low-power electronically controlled air suspension system, and an energy-saving control method of the electronically controlled air suspension system of the vehicle. Background Art

[0002] Air suspension of vehicles, as a system assembly to improve the ride comfort and driving smoothness of vehicles, has been widely used in trucks, buses and even trailers in developed countries such as Europe and the United States. In recent years, with the improvement of people's requirements for ride comfort and driving smoothness, air suspension has developed rapidly in my country's bus market with strong development momentum and a large market share. In response to the national policy of energy conservation, emission reduction and efficiency improvement, the power consumption of air suspension is a problem worthy of attention. If the power consumption of the air suspension of each vehicle is reduced, then the reduction of total power consumption cannot be underestimated, which has a great role in promoting energy conservation, emission reduction and efficiency improvement.

[0003] In the relevant scheme, the working state of the vehicle's electronically controlled air suspension can only work when the whole vehicle is ignited. Compared with the power consumption of only the air suspension ECU (electronic control unit) being powered on, the power consumption of the whole vehicle ignition is very large. Therefore, the way that the electronically controlled air suspension can only work when the whole vehicle is ignited greatly increases the power consumption of the air suspension, because after the whole vehicle is ignited, other power-consuming parts except the air suspension are also consuming power, which is equivalent to doing a lot of useless work.

[0004] The above contents are only used to assist in understanding the technical solution of the present invention and do not constitute an admission that the above contents are prior art. Summary of the invention

[0005] The object of the present invention is to provide an electronically controlled air suspension system, a vehicle and a control method of the electronically controlled air suspension system thereof, so as to solve the problem that the electronically controlled air suspension of the vehicle can only work when the whole vehicle is ignited, while the power-consuming parts of the vehicle except the electronically controlled air suspension are all consuming power, which greatly increases the power consumption of the vehicle. By changing the ECU power supply circuit of the electronically controlled air suspension of the vehicle, the electronically controlled air suspension can work without the need for ignition of the whole vehicle, thereby reducing the power consumption of the vehicle.

[0006] The present invention provides an electronically controlled air suspension system, comprising: an ECU control unit, a communication module and an electric component; the ECU control unit comprises: an ECAS main control chip, a first power conversion unit and a second power conversion unit; wherein an ignition input line of a vehicle in which the electronically controlled air suspension system is located is connected to an input end of the first power conversion unit; an output end of the first power conversion unit is connected to a power supply end of the ECAS main control chip; an output end of the ECAS main control chip is connected to an input end of the second power conversion unit; an output end of the second power conversion unit is also connected to a power supply end of the electric component; a signal line is drawn out from a power supply of the communication module, and the signal line is also connected to the input end of the first power conversion unit; When the vehicle where the system is located has a normal power voltage input but is not ignited, and the communication module receives a start-up command for the electronically controlled air suspension system, the communication module provides a first trigger signal to the input end of the first power conversion unit through a signal line; the first power conversion unit performs voltage conversion based on the normal power voltage and the first trigger signal to obtain a first working voltage; the ECAS main control chip operates based on the first working voltage; when the ECAS main control chip operates based on the first working voltage, the output end of the ECAS main control chip provides a second trigger signal; the second power conversion unit performs voltage conversion based on the normal power voltage and the second trigger signal to obtain a second working voltage; and the power-consuming component operates based on the second working voltage.

[0007] In some embodiments, the electrical components include at least: a height sensor and a solenoid valve.

[0008] In some embodiments, the first power conversion unit includes: a first power conversion module and a second power conversion module; wherein the first power conversion module is used to convert the normal power voltage into a first voltage; the second power conversion module is used to convert the first voltage into a second voltage, and use the second voltage as the first working voltage.

[0009] In some embodiments, the second power conversion unit includes: a third power conversion module; the third power conversion module is used to convert the normal power voltage into a third voltage, and use the third voltage as the second working voltage.

[0010] In some embodiments, the communication module includes: a Bluetooth communication board; the Bluetooth communication board has a control switch; when the control switch is turned on, the Bluetooth communication board can provide a first trigger signal to the input end of the first power conversion unit through a signal line led out from the power supply of the Bluetooth communication board.

[0011] Matching the above-mentioned device, the present invention further provides a vehicle on the other hand, comprising: the above-mentioned electronically controlled air suspension system.

[0012] Matching the above-mentioned vehicle, the present invention provides a control method for an electronically controlled air suspension system of a vehicle on another aspect, comprising: receiving a start-up instruction of the electronically controlled air suspension system sent by a terminal through the communication module; when the vehicle where the electronically controlled air suspension system is located has a normal power voltage input but is not ignited, and the communication module receives the start-up instruction of the electronically controlled air suspension system, controlling the communication module to provide a first trigger signal to the input end of the first power conversion unit through a signal line led out, so that the first power conversion unit performs voltage conversion based on the normal power voltage and the first trigger signal to obtain a first working voltage; further, the ECAS main control chip is operated based on the first working voltage; when the ECAS main control chip is operated based on the first working voltage, controlling the output end of the ECAS main control chip to provide a second trigger signal, so that the second power conversion unit performs voltage conversion based on the normal power voltage and the second trigger signal to obtain a second working voltage; further, the power-consuming component is operated based on the second working voltage.

[0013] In some implementations, the method further includes: before receiving a start instruction of the electronically controlled air suspension system sent by a terminal through the communication module, controlling a control switch of the communication module to be disconnected.

[0014] In some embodiments, the method further includes: after the electrical component is operated based on the second operating voltage, if a return signal is received after the electrical component has completed operation, controlling the control switch of the communication module to close.

[0015] Therefore, the scheme of the present invention is to set a first power conversion module (such as a first power conversion chip), a second power conversion module (such as a second power conversion chip) and a third power conversion module (such as a third power conversion chip) in the ECU circuit, and use a signal line derived from the voltage U1 of the Bluetooth communication board to provide a trigger signal for the enable end of the first power conversion chip, so that the first power conversion chip provides the working voltage U3 to the ECAS main control chip through the second power conversion chip. When the ECAS main control chip is working, the ECAS main control chip is used to provide input voltage to the third power conversion chip so that the output voltage U4 of the third power conversion chip provides working voltage for other power-consuming parts of the ECAS system. When there is no ignition voltage input at the enable end of the first power conversion chip, the voltage U1 of the Bluetooth communication board is used to trigger the first power conversion chip, thereby enabling the ECAS main control chip and other power-consuming parts of the ECAS system to be powered and work. Therefore, by changing the ECU circuit of the vehicle's electronically controlled air suspension, the electronically controlled air suspension can work without the need for ignition of the entire vehicle, thereby reducing the power consumption of the vehicle.

[0016] Other features and advantages of the present invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the present invention.

[0017] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a structural schematic diagram of an embodiment of an electronically controlled air suspension system of the present invention;

[0019] Figure 2 It is a flow chart of an embodiment of a control method of an electronically controlled air suspension in a related scheme;

[0020] Figure 3 A schematic flow chart of an embodiment of a control method for an electronically controlled air suspension in an improved solution;

[0021] Figure 4 is a structural schematic diagram of an embodiment of an electronically controlled air suspension system;

[0022] Figure 5 A schematic diagram of the structure of an embodiment of an ECU circuit in an electronically controlled air suspension system;

[0023] Figure 6 The figure is a flow chart of an embodiment of a control method of an electronically controlled air suspension system of a vehicle according to the present invention. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0025] Considering that the electronically controlled air suspension of a vehicle can only work when the whole vehicle is ignited, and the electrical parts of the vehicle except the electronically controlled air suspension are all consuming electricity, which greatly increases the power consumption of the vehicle. So, if it is possible to make the electronically controlled air suspension work without igniting the vehicle, the power consumption of the vehicle will be greatly reduced. Therefore, the scheme of the present invention provides an energy-saving scheme for an electronically controlled air suspension system, by modifying the relevant circuits of the ECU of the electronically controlled air suspension of the vehicle, so as to realize the normal operation of the electronically controlled air suspension without igniting the whole vehicle, so that the electronically controlled air suspension of the vehicle can be raised, lowered, side-knelt, etc. as required, thereby achieving the effect of reducing power consumption.

[0026] According to an embodiment of the present invention, an electronically controlled air suspension system is provided. Figure 1 The structure diagram of an embodiment of the device of the present invention is shown. The electronically controlled air suspension system may include: an ECU control unit, a communication module and power components, the ECU control unit such as an ECAS main control chip and three power conversion chips, a communication module such as a Bluetooth communication board, and power components such as solenoid valves and height sensors. The ECU control unit includes: an ECAS main control chip, a first power conversion unit and a second power conversion unit.

[0027] The ignition input line of the vehicle where the electronically controlled air suspension system is located is connected to the input end of the first power conversion unit. The output end of the first power conversion unit is connected to the power supply end of the ECAS main control chip. The output end of the ECAS main control chip is connected to the input end of the second power conversion unit. The output end of the second power conversion unit is also connected to the power supply end of the power-consuming component. The output of the power conversion unit serves the load. The power conversion chip converts and outputs the voltage required by the load.

[0028] A signal line is led out from the power supply of the communication module, and the signal line is also connected to the input end of the first power conversion unit.

[0029] When the vehicle where the electronically controlled air suspension system is located has a normal power voltage input but is not ignited, and the communication module receives a start-up instruction of the electronically controlled air suspension system, the communication module provides a first trigger signal to the input end of the first power conversion unit through a signal line. The first power conversion unit performs voltage conversion based on the normal power voltage and the first trigger signal to obtain a first working voltage. The ECAS main control chip works based on the first working voltage.

[0030] When the ECAS main control chip operates based on the first operating voltage, the output terminal of the ECAS main control chip provides a second trigger signal. The second power conversion unit performs voltage conversion based on the normal power voltage and the second trigger signal to obtain a second operating voltage. The power-consuming component operates based on the second operating voltage.

[0031] The solution of the present invention provides an energy-saving solution for an electronically controlled air suspension system. By changing the relevant circuits of the ECU of the electronically controlled air suspension of the vehicle, when all systems of the vehicle are in a dormant or shutdown state, other vehicle systems are not ignited, and only the ECAS (electronically controlled air suspension) system is powered on. Only the residual air pressure in the air tank is used to perform fine control of the ECAS system, which can greatly reduce the energy consumption of the whole vehicle.

[0032] In the solution of the present invention, by changing the hardware connection between the ECU and the Bluetooth communication board (specifically, changing the triggering method), the air suspension system ECU can be powered independently when the whole vehicle is not ignited, so that the ECU can control the entire air suspension system normally, so that the entire air suspension system can work normally without igniting other systems of the whole vehicle, thereby reducing the power consumption of other systems when the whole vehicle is ignited.

[0033] In some embodiments, the electrical components include at least: a height sensor and a solenoid valve.

[0034] Specifically, Figure 4 FIG. 1 is a schematic diagram of the structure of an embodiment of an electronically controlled air suspension system. Figure 4 As shown in the figure, the electronically controlled air suspension system of the vehicle includes: main board (ECU control unit), Bluetooth communication board, height sensor, air compressor and solenoid valve group, air bag, air tank, air spring shock absorber, and finally achieves the expected energy saving effect through the cooperation between various modules. Among them, RR means rear right, RL means rear left, FR means front right, and FL means front left. Figure 2 FIG. 1 is a flow chart of an embodiment of a control method for an electronically controlled air suspension in a related scheme. Figure 2 As shown, the control method of the electronically controlled air suspension in the related scheme includes:

[0035] Step 11: Supply power to the communication module of the ECAS system (such as a Bluetooth communication board or a Bluetooth module or other wireless module) to make it work. The ECU requires the power of the vehicle ignition to work, so the vehicle power and ignition are started at the same time, and the ECU can work normally.

[0036] Step 12: When the ECU is working normally, the Bluetooth communication board sends a control signal to the ECU when adjustment is required (or no adjustment is required). The ECU will perform corresponding operations based on the control signal to control the solenoid valve to inflate or deflate the airbag (such as the front axle airbag and the rear axle airbag). When the front of the vehicle is raised or lowered to the calibrated height, the height sensor returns a signal and the work is completed.

[0037] In some embodiments, the first power conversion unit includes: a first power conversion module (such as a first power conversion chip) and a second power conversion module (such as a second power conversion chip). The first power conversion module is used to convert the normal power voltage into a first voltage. The second power conversion module is used to convert the first voltage into a second voltage, and use the second voltage as the first working voltage.

[0038] See also Figure 5 In the example shown, the very beginning of the entire electronically controlled air suspension system circuit is triggered by the ignition of voltage U0. Voltage U0 not only ignites the power system of the entire vehicle, but also enables the first power conversion chip. Although the ECU of the air suspension (i.e., the ECAS main control chip) is activated, the power system of the entire vehicle is also activated at the same time, consuming more useless power.

[0039] If a controllable signal (i.e. high level) is given before the enable terminal of the first power conversion chip, the ECU of the air suspension can be activated without igniting the vehicle power system. This signal can be given by a communication module. Many air suspensions in related solutions have been intelligent and convenient. Using the joint work of some Bluetooth modules, 4G modules and other communication modules, these communication modules can not only realize remote control, remote detection, intelligent calibration and other functions, but also provide some required signals for the ECU.

[0040] In some embodiments, the second power conversion unit includes: a third power conversion module. The third power conversion module (such as a third power conversion chip) is used to convert the normal power voltage into a third voltage and use the third voltage as the second working voltage.

[0041] The solution of the present invention provides a low-power electronically controlled air suspension system, which is realized by partially changing the ECU circuit in the electronically controlled air suspension system. From the mode point of view, the energy-saving mode can be activated by using the power line of the Bluetooth communication board through a change scheme on the hardware circuit with minimal changes at the hardware level. Figure 5 FIG. 1 is a schematic diagram of the structure of an embodiment of an ECU circuit in an electronically controlled air suspension system. Figure 5 As shown, the ECU circuit in the electronically controlled air suspension system includes: a first power conversion chip, a second power conversion chip, an ECAS main control chip and a third power conversion chip. The specific structure of the three power conversion chips is a chip of an integrated gate circuit, which can achieve the purpose of level conversion. The model is not fixed, and it can adapt to the circuit and achieve the effect. The voltage U0 input by the 24V ignition input line is to the input end of the first power conversion chip (also the enable end of the first power conversion chip). The output end of the first power conversion chip outputs the voltage U2 to the input end of the second power conversion chip. The output end of the second power conversion chip outputs the voltage U3 to the power supply end of the ECAS main control chip. The output end of the ECAS main control chip is connected to the input end of the third power conversion chip. The output end of the third power conversion chip outputs the voltage U4, which is input to the input end of the first power conversion chip (also the enable end of the first power conversion chip). The 3.3V input voltage U1 of the Bluetooth communication board can also be input to the input end of the first power conversion chip (also the enable end of the first power conversion chip).

[0042] In some embodiments, the communication module includes a Bluetooth communication board. The Bluetooth communication board has a control switch. When the control switch is turned on, the Bluetooth communication board can provide a first trigger signal to the input end of the first power conversion unit through a signal line led from the power supply of the Bluetooth communication board.

[0043] The solution of the present invention is to realize the joint work of the Bluetooth module and the main board (i.e., the ECU control unit). A signal line (such as a power line or a high-level signal line) is drawn out from the voltage U1 of the Bluetooth communication board. Like the ECU control unit, it can be powered from the normal power of the vehicle. The switch is used to control whether the signal line is transmitted, so as to give a trigger signal (i.e., a high level) to the enable pin (i.e., the enable end) of the first power conversion chip inside the ECU. The switch can be set anywhere where there is a high-level signal transmission. When the switch is closed, the level passes and the chip is activated.

[0044] The significance of giving the ECU signal through the Bluetooth communication board is that it can bypass the vehicle ignition power signal, activate the first power conversion chip in the ECU alone, and not power on the vehicle power system. The entire air suspension system can be started or shut down at any time through the switch on the Bluetooth communication board. Among them, the first power conversion chip is the beginning and start of the entire air suspension ECU mainboard circuit.

[0045] After the enable end of the first power conversion chip receives the trigger signal, the voltage U2 is converted by the first power conversion chip, and then the voltage U3 is output after conversion by the second power conversion chip inside the main board (i.e., ECU control unit). The main chip of the entire air suspension ECU (i.e., ECAS main control chip) works under the voltage U3, that is, at this time, the ECAS main control chip starts to work, but it is not enough for the entire air suspension system to work. The entire air suspension system also requires the cooperation of components such as solenoid valves and height sensors. Here, a two-stage power conversion chip is set to power the ECAS main control chip because: the main chip is powered by 3.3V voltage, the normal power is 24V, 24V is directly converted to 3.3V, the voltage span is large, and the voltage output is unstable; and the CAN circuit also needs 5V power supply, so first 24V~5V, then 5V~3.3V, which is achieved through two power conversion circuits.

[0046] At this point, the ECU circuit in the entire electronically controlled air suspension system already has voltages U0, U2, and U3, but the height sensor requires voltage U4 to work properly, and this is when the ECAS main control chip and peripheral circuits need to play a role. Among them, when the vehicle is not ignited, the voltage U0 is 0. Specifically, after the ECAS main control chip works, an input pin connected to the third power conversion chip on the ECAS main control chip will send a signal (i.e., a high level), which triggers and works the third power conversion chip, and the third power conversion chip outputs voltage U4. At this point, the main board (i.e., the ECU control unit) has voltages U0, U2, U3, and U4 to power the main board (i.e., the ECU control unit), so that each module of the air suspension ECU main board (i.e., the ECU control unit) can work properly. In this way, by changing the ECU control unit, it is possible to achieve that the ECU can control the entire air suspension system normally and work normally when the vehicle is not ignited.

[0047] Among them, voltage U0 is the 24V voltage for mainboard ignition, voltage U1 is the 3.3V voltage for Bluetooth communication board, voltage U2 is the 5V voltage for mainboard, voltage U3 is the 3.3V voltage for mainboard, and U4 is the 9V voltage for mainboard. The first power conversion chip is a 24V to 5V power conversion chip. The second power conversion chip is a 5V to 3.3V power conversion chip, and the third power conversion chip is a 24V to 9V voltage conversion circuit.

[0048] According to the technical solution of the present invention, a first power conversion module (such as a first power conversion chip), a second power conversion module (such as a second power conversion chip) and a third power conversion module (such as a third power conversion chip) are arranged in the ECU circuit, and a signal line derived from the voltage U1 of the Bluetooth communication board is used to provide a trigger signal for the enable end of the first power conversion chip, so that the first power conversion chip provides the working voltage U3 to the ECAS main control chip via the second power conversion chip. When the ECAS main control chip is working, the ECAS main control chip is used to provide input voltage to the third power conversion chip so that the output voltage U4 of the third power conversion chip provides working voltage for other power-consuming parts of the ECAS system. When there is no ignition voltage input at the enable end of the first power conversion chip, the voltage U1 of the Bluetooth communication board is used to trigger the first power conversion chip, thereby enabling the ECAS main control chip and other power-consuming parts of the ECAS system to be powered on and work. Thus, by modifying the ECU circuit of the vehicle's electronically controlled air suspension, the electronically controlled air suspension can work without the need for ignition of the entire vehicle, thereby reducing the power consumption of the vehicle.

[0049] According to an embodiment of the present invention, a vehicle corresponding to an electronically controlled air suspension system is also provided. The vehicle may include: the electronically controlled air suspension system described above.

[0050] Since the processing and functions implemented by the vehicle of this embodiment basically correspond to the embodiments, principles and examples of the device, for the details not described in this embodiment, please refer to the relevant descriptions in the aforementioned embodiments and will not be repeated here.

[0051] According to the technical solution of the present invention, a first power conversion module (such as a first power conversion chip), a second power conversion module (such as a second power conversion chip) and a third power conversion module (such as a third power conversion chip) are arranged in the ECU circuit, and a signal line derived from the voltage U1 of the Bluetooth communication board is used to provide a trigger signal for the enable end of the first power conversion chip, so that the first power conversion chip provides the working voltage U3 to the ECAS main control chip via the second power conversion chip. When the ECAS main control chip is working, the ECAS main control chip is used to provide input voltage to the third power conversion chip so that the output voltage U4 of the third power conversion chip provides working voltage for other power-consuming parts of the ECAS system. When there is no ignition voltage input at the enable end of the first power conversion chip, the voltage U1 of the Bluetooth communication board is used to trigger the first power conversion chip, thereby enabling the ECAS main control chip and other power-consuming parts of the ECAS system to be powered on and work. With minimal changes to the Bluetooth communication board and the ECU hardware circuit, the energy-saving mode of chassis suspension control is truly realized.

[0052] According to an embodiment of the present invention, a control method for an electronically controlled air suspension system of a vehicle is also provided, such as Figure 6 The flowchart of an embodiment of the method of the present invention is shown in FIG. The control method of the electronically controlled air suspension system of a vehicle may include: steps S110 to S130.

[0053] In step S110, a start instruction of the electronically controlled air suspension system sent by a terminal is received through the communication module.

[0054] At step S120, when the vehicle where the electronically controlled air suspension system is located has a normal power voltage input but is not ignited, and the communication module receives a start-up instruction of the electronically controlled air suspension system, the communication module is controlled to provide a first trigger signal to the input end of the first power conversion unit through a signal line, so that the first power conversion unit performs voltage conversion based on the normal power voltage and the first trigger signal to obtain a first working voltage. Further, the ECAS main control chip is operated based on the first working voltage.

[0055] In step S130, when the ECAS main control chip operates based on the first operating voltage, the output terminal of the ECAS main control chip is controlled to provide a second trigger signal, so that the second power conversion unit performs voltage conversion based on the normal power voltage and the second trigger signal to obtain a second operating voltage, and then the power-consuming component operates based on the second operating voltage.

[0056] Figure 3 This is a flow chart of an embodiment of a control method for an electronically controlled air suspension in an improved solution. Figure 3 In the example shown, the first power conversion chip is a 24V to 5V chip on the main board, the second power conversion chip is a 5V to 3.3V chip on the main board, and the third power conversion chip is a 24V to 9V chip on the main board. Each car has a battery that provides 24V voltage; the ignition is powered after the normal power is turned on, and the key is inserted to power up, and then the entire vehicle instrument and other instruments are powered.

[0057] like Figure 3 As shown, the control method of the electronically controlled air suspension in the improved scheme includes:

[0058] Step 21, and Figure 2 Compared with the scheme shown in the figure, the Bluetooth communication board still works with normal power, but the ECU can be triggered without ignition. As long as a signal (i.e. high level) is given through the 3.3V voltage line of the Bluetooth communication board, the ECU starts working after being processed by a series of voltage conversion circuits inside the mainboard (such as the first power conversion chip, the second power conversion chip and the third power conversion chip).

[0059] Step 22: When the ECU is operational, control the solenoid valve to inflate or deflate the airbag. When the front of the vehicle is raised or lowered to a calibrated height, the height sensor returns a signal and the operation is completed.

[0060] Figure 3 The example shown, compared to Figure 2 The example shown breaks away from the constraint that the entire air suspension system can only work when the entire vehicle is ignited. Figure 2 The technical barriers of the solution shown have also achieved energy saving for the entire vehicle.

[0061] In some embodiments, it also includes: before the start-up instruction of the electronically controlled air suspension system sent by the terminal through the communication module in step S110, the control switch of the communication module is controlled to be disconnected, so that the start-up instruction of the electronically controlled air suspension system sent by the terminal through the communication module is received when the control switch of the communication module is turned on.

[0062] In some embodiments, the method further includes: after the electrical component is operated based on the second operating voltage in step S130, if a return signal is received after the electrical component has completed operation, then when the return signal is received after the electrical component has completed operation, the control switch of the communication module is controlled to be turned off.

[0063] The solution of the present invention combines APP+Bluetooth communication board+energy-saving mode to achieve energy conservation and emission reduction under short-distance communication and non-ignition operation, with high safety, low complexity and low cost. Specifically, through the vehicle APP+Bluetooth communication board+485 communication+energy-saving solution, the energy-saving mode of chassis suspension control is truly realized with minimal changes to the Bluetooth communication board and ECU hardware circuit. Among them, 485 communication is mainly the communication between the mainboard and the Bluetooth board, which is used to control the entire system.

[0064] The solution of the present invention adopts the modification of ECU hardware, which can realize the state that only the ECAS system is powered on (all systems of the whole vehicle are in a dormant or shutdown state), and at the same time, the whole electronically controlled air suspension system can work normally (that is, the front axle and the rear axle of the vehicle are controlled to be lifted or lowered and kneeled sideways as required), and only the residual air pressure of the air reservoir is used to perform fine control of the ECAS system (such as repeated calibration, fault diagnosis query, and limited lifting control), which solves the problem that the whole vehicle must be ignited and powered on to control the ECAS system, and also solves the energy consumption problem of the whole vehicle, which is conducive to greatly reducing the power consumption of the whole vehicle.

[0065] Since the processing and functions implemented by the method of this embodiment basically correspond to the embodiments, principles and examples of the aforementioned vehicle, for the details not exhaustive in the description of this embodiment, please refer to the relevant descriptions in the aforementioned embodiments, and no further elaboration will be made here.

[0066] The technical solution of this embodiment is adopted, by setting a first power conversion module (such as a first power conversion chip), a second power conversion module (such as a second power conversion chip) and a third power conversion module (such as a third power conversion chip) in the ECU circuit, using a signal line derived from the voltage U1 of the Bluetooth communication board to provide a trigger signal for the enable end of the first power conversion chip, so that the first power conversion chip provides the working voltage U3 to the ECAS main control chip through the second power conversion chip, and when the ECAS main control chip is working, the ECAS main control chip is used to provide input voltage to the third power conversion chip so that the output voltage U4 of the third power conversion chip provides working voltage for other power-consuming parts of the ECAS system, so that when there is no ignition voltage input at the enable end of the first power conversion chip, the voltage U1 of the Bluetooth communication board is used to trigger the first power conversion chip, thereby enabling the ECAS main control chip and other power-consuming parts of the ECAS system to be powered on, so that the entire air suspension system can work normally, and other systems of the whole vehicle do not need to be ignited, thereby reducing the power consumption of other systems when the whole vehicle is ignited.

[0067] In summary, it is easy for those skilled in the art to understand that, under the premise of no conflict, the above-mentioned advantageous methods can be freely combined and superimposed.

[0068] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. An electronically controlled air suspension system, characterized in that: include: ECU control unit, communication module and power components; The ECU control unit includes: an ECAS main control chip, a first power conversion unit and a second power conversion unit; wherein, The ignition input line of the vehicle where the electronically controlled air suspension system is located is connected to the input end of the first power conversion unit; the output end of the first power conversion unit is connected to the power supply end of the ECAS main control chip; the output end of the ECAS main control chip is connected to the input end of the second power conversion unit; the output end of the second power conversion unit is also connected to the power supply end of the power-consuming component; A signal line is led out from the power supply of the communication module, and the signal line is also connected to the input end of the first power conversion unit; When the vehicle where the electronically controlled air suspension system is located has a normal power voltage input but is not ignited, and the communication module receives a start instruction of the electronically controlled air suspension system, the communication module provides a first trigger signal to an input end of the first power conversion unit through a signal line; the first power conversion unit performs voltage conversion based on the normal power voltage and the first trigger signal to obtain a first working voltage; the ECAS main control chip works based on the first working voltage; When the ECAS main control chip operates based on the first operating voltage, the output end of the ECAS main control chip provides a second trigger signal; the second power conversion unit performs voltage conversion based on the normal power voltage and the second trigger signal to obtain a second operating voltage; and the power-consuming component operates based on the second operating voltage.

2. The electronically controlled air suspension system according to claim 1, characterized in that: The electrical components at least include: a height sensor and a solenoid valve.

3. The electronically controlled air suspension system according to claim 1, characterized in that: The first power conversion unit includes: a first power conversion module and a second power conversion module; wherein, The first power conversion module is used to convert the normal power voltage into a first voltage; the second power conversion module is used to convert the first voltage into a second voltage and use the second voltage as the first working voltage.

4. The electronically controlled air suspension system according to claim 1, characterized in that: The second power conversion unit includes: a third power conversion module; The third power conversion module is used to convert the normal power voltage into a third voltage, and use the third voltage as the second working voltage.

5. The electronically controlled air suspension system according to any one of claims 1 to 4, characterized in that: The communication module includes: a Bluetooth communication board; the Bluetooth communication board has a control switch; when the control switch is turned on, the Bluetooth communication board can provide a first trigger signal to the input end of the first power conversion unit through a signal line led out from the power supply of the Bluetooth communication board.

6. A vehicle, characterized in that: include: An electronically controlled air suspension system as claimed in any one of claims 1 to 5.

7. A control method for an electronically controlled air suspension system of a vehicle as claimed in claim 6, characterized in that: include: Receiving, via the communication module, a start instruction of the electronically controlled air suspension system sent by a terminal; When the vehicle where the electronically controlled air suspension system is located has a normal power voltage input but is not ignited, and the communication module receives a start-up instruction of the electronically controlled air suspension system, the communication module is controlled to provide a first trigger signal to the input end of the first power conversion unit through a signal line, so that the first power conversion unit performs voltage conversion based on the normal power voltage and the first trigger signal to obtain a first working voltage; further, the ECAS main control chip is operated based on the first working voltage; When the ECAS main control chip operates based on the first operating voltage, the output end of the ECAS main control chip is controlled to provide a second trigger signal, so that the second power conversion unit performs voltage conversion based on the normal power voltage and the second trigger signal to obtain a second operating voltage; and then the power-consuming component operates based on the second operating voltage.

8. The control method of the electronically controlled air suspension system of a vehicle according to claim 7, characterized in that: Also includes: Before receiving the start instruction of the electronically controlled air suspension system sent by the terminal through the communication module, the control switch of the communication module is controlled to be disconnected.

9. The control method of the electronically controlled air suspension system of a vehicle according to claim 7 or 8, characterized in that: Also includes: After the power-consuming component is operated based on the second operating voltage, if a return signal is received after the power-consuming component has completed the operation, the control switch of the communication module is controlled to be closed.

Images