System and method for controlling intake ratio of vehicle blower

Abstract

The invention relates to a system and a method for controlling an intake proportion of a vehicle blower. The system for controlling an intake proportion of a vehicle blower includes: a blower gear detection device configured to detect a blower gear; a vehicle speed detection device configured to detect a current vehicle speed of the vehicle; a passenger seat seating detection device configured to detect whether a passenger is seated on the passenger seat; the heating, ventilating and air conditioning control device is electrically connected with the air blower gear detection device, the vehicle speed detection device and the co-driver seat sitting detection device respectively, and is configured to receive information from the co-driver seat sitting detection device, the vehicle speed detection device and the air blower gear detection device; and when the vehicle is started and the air blower is started, whether air inlet proportion control of the air blower is started or not is determined according to the current air blower gear, the current vehicle speed and the passenger seat seating information.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle control, and more particularly, to a system and method for controlling an air intake ratio of a vehicle blower. Background Art

[0002] With the popularity of electric vehicles, electric vehicles without automatic defogging sensors are more popular due to their low cost compared to electric vehicles equipped with automatic defogging sensors (ADS). However, for electric vehicles without automatic defogging sensors, in low temperature environments, due to the heating of the positive temperature coefficient (PTC) equipment, the power consumption of the PTC equipment increases, and the pure electric mileage (All Electric Range, AER) of the electric vehicle will decrease. In addition, when the speed of an electric vehicle without an automatic defogging sensor is high and the blower gear is low, the external cold air will enter the car due to the low suction pressure of the blower, thereby reducing the temperature at the feet of the front passengers and the temperature at the driver's head. In addition, electric vehicles without automatic defogging sensors cannot sense the temperature and humidity information outside the vehicle, and cannot adjust the air intake ratio of the blower according to changes in the external environment, making it easy for the windshield to fog.

[0003] Therefore, for electric vehicles that are not equipped with an automatic defog sensor, there is an urgent need for a system and method that can intelligently control the air intake ratio of the vehicle blower.

[0004] The above description of the background technology is only for facilitating an in-depth understanding of the technical solution of the present invention (such as the technical means used, the technical problems solved and the technical effects produced), and should not be regarded as an admission or any form of implication that the information constitutes prior art already known to those skilled in the art. Summary of the invention

[0005] The purpose of the present invention is to determine whether to turn on the air intake ratio control of the blower for an electric vehicle that is not equipped with an automatic defogger sensor by obtaining the passenger seating information on the front passenger seat, the vehicle speed information and the blower gear position, thereby reducing the power consumption of the positive temperature coefficient (PTC) device, increasing the all-electric range (All Electric Range, AER) of the electric vehicle in winter, and improving the driving and riding comfort of the driver and passengers.

[0006] According to an embodiment of the present invention, a system for controlling the air intake ratio of a vehicle blower is provided, comprising: a blower gear detection device, configured to detect the blower gear; a vehicle speed detection device, configured to detect the current speed of the vehicle; a front passenger seat occupancy detection device, configured to detect whether a passenger is seated on the front passenger seat; a HVAC control device, which is electrically connected to the blower gear detection device, the vehicle speed detection device and the front passenger seat occupancy detection device, respectively, and is configured to: receive information from the front passenger seat occupancy detection device, the vehicle speed detection device and the blower gear detection device; when the vehicle is started and the blower is turned on, determine whether to turn on the air intake ratio control of the blower according to the current blower gear, the current vehicle speed and the front passenger seat occupancy information.

[0007] Preferably, the blower gear includes multiple gears, and the HVAC control device is further configured to: when the current blower gear is a predetermined gear, turn off the air intake ratio control function of the blower; when the current blower gear is a gear other than the predetermined gear among the multiple gears, turn on the air intake ratio control function of the blower.

[0008] Preferably, the HVAC control device includes a memory, on which is stored an intake ratio control mapping table preset based on vehicle speed information and blower gear, and the intake ratio control mapping table is divided into an intake ratio control on area and an intake ratio control off area; the memory also stores a predetermined first intake ratio control switching delay time and a second intake ratio control switching delay time; the HVAC control device is further configured to, when determining the state of the intake ratio control function of turning on the blower: determine, based on the current vehicle speed information and the current blower gear, whether the current state of the intake ratio control is in the intake ratio control on area or the intake ratio control off area based on the intake ratio control mapping table, and determine the change of the current state of the intake ratio control between the intake ratio control on area and the intake ratio control off area.

[0009] Preferably, the HVAC control device is further configured to, in a state where it is determined that a passenger is sitting on the front passenger seat: when it is determined that the current state of the air intake ratio control has changed from the air intake ratio control on zone to the air intake ratio control off zone, determine whether the time for which the current state of the air intake ratio control remains in the air intake ratio control off zone is greater than or equal to the first air intake ratio control switching delay time; if the time for which the current state of the air intake ratio control remains in the air intake ratio control off zone is greater than or equal to the first air intake ratio control switching delay time, change the air intake ratio control to off; if the time for which the current state of the air intake ratio control remains in the air intake ratio control off zone is less than the first air intake ratio control switching delay time, keep the air intake ratio control on.

[0010] Preferably, the HVAC control device is further configured as follows: when it is determined that the current state of the air intake ratio control has changed from the air intake ratio control closing zone to the air intake ratio control opening zone, determine whether the time for which the current state of the air intake ratio control remains in the air intake ratio control opening zone is greater than or equal to the first air intake ratio control switching delay time; if the time for which the current state of the air intake ratio control remains in the air intake ratio control opening zone is greater than or equal to the first air intake ratio control switching delay time, change the air intake ratio control to open; if the time for which the current state of the air intake ratio control remains in the air intake ratio control opening zone is less than the first air intake ratio control switching delay time, keep the air intake ratio control closed.

[0011] Preferably, the HVAC control device is further configured to, in a state where it is determined that there is no passenger sitting on the front passenger seat: when it is determined that the current state of the air intake ratio control has changed from the air intake ratio control on zone to the air intake ratio control off zone, determine whether the time that the current state of the air intake ratio control remains in the air intake ratio control off zone is greater than or equal to the second air intake ratio control switching delay time; if the time that the current state of the air intake ratio control remains in the air intake ratio control off zone is greater than or equal to the second air intake ratio control switching delay time, change the air intake ratio control to off; if the time that the current state of the air intake ratio control remains in the air intake ratio control off zone is less than the second air intake ratio control switching delay time, keep the air intake ratio control on.

[0012] Preferably, the HVAC control device is further configured as follows: when it is determined that the current state of the air intake ratio control has changed from the air intake ratio control closing zone to the air intake ratio control opening zone, determine whether the time for which the current state of the air intake ratio control remains in the air intake ratio control opening zone is greater than or equal to the first air intake ratio control switching delay time; if the time for which the current state of the air intake ratio control remains in the air intake ratio control opening zone is greater than or equal to the first air intake ratio control switching delay time, change the air intake ratio control to open; if the time for which the current state of the air intake ratio control remains in the air intake ratio control opening zone is less than the first air intake ratio control switching delay time, keep the air intake ratio control closed.

[0013] Preferably, turning on the air intake ratio control means making the internal circulation air intake ratio of the blower reach a predetermined ratio, which is 30% of the total air intake volume; turning off the air intake ratio control means making the internal circulation air intake ratio of the blower zero.

[0014] Preferably, the predetermined gear is 1st gear.

[0015] Preferably, the first air intake ratio control switching delay time is set to 10 seconds, and the second air intake ratio control switching delay time is set to 70 seconds.

[0016] According to an embodiment of the present invention, a method for controlling the air intake ratio of a vehicle blower is provided, which comprises: detecting the blower gear; detecting the current speed of the vehicle; detecting whether there is a passenger sitting on the front passenger seat; when the vehicle is started and the blower is turned on, determining whether to turn on the air intake ratio control of the blower according to the current blower gear, the current vehicle speed and the front passenger seat seating information.

[0017] Preferably, the blower includes multiple gears. When the current blower gear is a predetermined gear, the air intake ratio control function of the blower is turned off; when the current blower gear is a gear other than the predetermined gear among the multiple gears, the air intake ratio control function of the blower is turned on.

[0018] Preferably, an intake ratio control mapping table preset based on vehicle speed information and blower gear is stored, and the intake ratio control mapping table is divided into an intake ratio control on area and an intake ratio control off area; a predetermined first intake ratio control switching delay time and a second intake ratio control switching delay time are stored; when determining the state of the intake ratio control function of the blower to be turned on, determine whether the current state of the intake ratio control is in the intake ratio control on area or the intake ratio control off area based on the intake ratio control mapping table according to the detected current vehicle speed information and the current blower gear; determine the change of the current state of the intake ratio control between the intake ratio control on area and the intake ratio control off area.

[0019] Preferably, in a state where it is determined that there is a passenger sitting on the front passenger seat: when it is determined that the current state of the air intake ratio control has changed from the air intake ratio control on zone to the air intake ratio control off zone, determine whether the time for which the current state of the air intake ratio control remains in the air intake ratio control off zone is greater than or equal to the first air intake ratio control switching delay time; if the time for which the current state of the air intake ratio control remains in the air intake ratio control off zone is greater than or equal to the first air intake ratio control switching delay time, the air intake ratio control is changed to off; if the time for which the current state of the air intake ratio control remains in the air intake ratio control off zone is less than the first air intake ratio control switching delay time, the air intake ratio control is kept on.

[0020] Preferably, when it is determined that the state of the current intake ratio control has changed from the intake ratio control closed area to the intake ratio control open area, it is determined whether the time for which the current intake ratio control state remains in the intake ratio control open area is greater than or equal to the first intake ratio control switching delay time; if the time for which the current intake ratio control state remains in the intake ratio control open area is greater than or equal to the first intake ratio control switching delay time, the intake ratio control is changed to open; if the time for which the current intake ratio control state remains in the intake ratio control closed area is less than the first intake ratio control switching delay time, the intake ratio control is kept closed.

[0021] Preferably, when it is determined that there is no passenger sitting on the front passenger seat: when it is determined that the current state of the air intake ratio control has changed from the air intake ratio control on zone to the air intake ratio control off zone, determine whether the time for which the current state of the air intake ratio control remains in the air intake ratio control off zone is greater than or equal to the second air intake ratio control switching delay time; if the time for which the current state of the air intake ratio control remains in the air intake ratio control off zone is greater than or equal to the second air intake ratio control switching delay time, the air intake ratio control is changed to off; if the time for which the current state of the air intake ratio control remains in the air intake ratio control off zone is less than the second air intake ratio control switching delay time, the air intake ratio control is kept on.

[0022] Preferably, when it is determined that the state of the current intake ratio control has changed from the intake ratio control closed area to the intake ratio control open area, it is determined whether the time for which the current intake ratio control state remains in the intake ratio control open area is greater than or equal to the first intake ratio control switching delay time; if the time for which the current intake ratio control state remains in the intake ratio control open area is greater than or equal to the first intake ratio control switching delay time, the intake ratio control is changed to open; if the time for which the current intake ratio control state remains in the intake ratio control open area is less than the first intake ratio control switching delay time, the intake ratio control is kept closed.

[0023] Preferably, turning on the air intake ratio control means making the internal circulation air intake ratio of the blower reach a predetermined ratio, which is 30% of the total air intake volume; turning off the air intake ratio control means making the internal circulation air intake ratio of the blower zero.

[0024] Preferably, the predetermined gear is 1st gear.

[0025] Preferably, the first air intake ratio control switching delay time is set to 10 seconds, and the second air intake ratio control switching delay time is set to 70 seconds.

[0026] The present invention adopts the above technical solution, which has the following beneficial effects:

[0027] For electric vehicles not equipped with ADS, a map of the vehicle's reference speed and blower gear is obtained, and whether to turn on / off the intake ratio control is determined based on the seating situation of the front passengers, thereby ensuring that the intelligent intake logic is used as much as possible to reduce PTC power consumption, thereby improving the AER in winter. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The exemplary embodiments of the present invention will be described in more detail below in conjunction with the accompanying drawings. For the sake of clarity, the same components in different drawings are shown with the same reference numerals. It should be noted that the drawings are only for illustration and are not necessarily drawn to scale. In these drawings:

[0029] Figure 1 A schematic diagram of the air intake of a vehicle blower.

[0030] Figure 2 4 is a block diagram of a system for controlling an intake air ratio of a blower of a vehicle according to an embodiment of the present invention.

[0031] Figure 3 4 is a flowchart of a method for controlling an intake air ratio of a blower of a vehicle according to an embodiment of the present invention.

[0032] Figure 4 The flowchart is a processing procedure of starting the intake air ratio control function in the method for controlling the intake air ratio of the blower of the vehicle according to the embodiment of the present invention. DETAILED DESCRIPTION

[0033] The implementation scheme of the present invention is described in detail below. This implementation scheme is implemented on the premise of the technical scheme of the present invention, and a detailed implementation method and specific operation process are given, but the protection scope of the present invention is not limited to the implementation scheme described below.

[0034] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0035] Figure 1 This is a schematic diagram of the air intake of a vehicle blower. Figure 1 By controlling the opening of the air intake valve of the blower, the ratio of external circulation air intake and internal circulation air intake can be adjusted. Among them, the internal circulation means that the blower sucks air from the car and pressurizes it to circulate in the car, and the external circulation means sucking air from outside the car and sending the air inside the car out of the car through pressure, so as to realize the continuous interaction of fresh air and turbid air inside the car.

[0036] In low temperature environments, when the vehicle speed is high and the blower gear is low, the outside cold air will enter the cab due to the low suction pressure of the blower (see Figure 1The dotted arrow represented by "X") may reduce the temperature at the passenger's foot and the driver's head. In this case, it is necessary to adjust the external circulation air intake ratio and the internal circulation air intake ratio, for example, to reduce the internal circulation air intake ratio control.

[0037] Figure 2 1 is a block diagram of a system for controlling the air intake ratio of a vehicle blower according to an embodiment of the present invention. The system for controlling the air intake ratio of a vehicle blower according to an embodiment of the present invention may include: a heating, ventilation and air conditioning (HVAC) control device 100, a blower gear detection device 200, a vehicle speed detection device 300, and a passenger seat seating detection device 400. The HVAC system maintains the temperature in the vehicle's cabin at a comfortable level for the driver and passengers by providing the desired heating, cooling, or ventilation to the cabin.

[0038] The blower gear detection device 200 can be configured to detect the blower gear, and the blower gear can include multiple gears, for example, 1st gear to 8th gear. The higher the gear of the blower, the greater the air supply. In other words, the gear of the blower can represent the air supply of the blower. The vehicle speed detection device 300 can be configured to detect the current speed of the vehicle. The front passenger seat seating detection device 400 can be configured to detect whether a passenger is sitting on the front passenger seat. The front passenger seat seating detection device 400 may include a seat pressure sensor, a seat belt sensor, etc. that can detect whether a passenger is sitting on the front passenger seat, but is not limited to this. The HVAC control device 100 can be electrically connected to the blower gear detection device 200, the vehicle speed detection device 300 and the front passenger seat seating detection device 400, respectively, and can be configured to: receive information from the blower gear detection device 200, the vehicle speed detection device 300 and the front passenger seat seating detection device 400; when the vehicle is started and the blower is turned on, determine whether to turn on the blower intake ratio control based on the detected current blower gear, current vehicle speed and front passenger seat seating information.

[0039] The operation process of the system for controlling the intake air ratio of the vehicle blower according to the embodiment of the present invention is described in detail below. Figure 3 4 is a flowchart of a method for controlling an intake air ratio of a blower of a vehicle according to an embodiment of the present invention.

[0040] In step S21, it is detected whether the electric vehicle is started, and in step S22, it is detected whether the blower is turned on. When the electric vehicle is started and the blower is turned on, in step S23, it is detected whether the current blower gear is a predetermined gear. When the detected current blower gear is not a predetermined gear (that is, the detected current blower gear is a gear other than the predetermined gear among multiple gears), the HVAC control device can turn on the air intake ratio control function of the blower; when the detected current blower gear is a predetermined gear, the HVAC control device can turn off the air intake ratio control function of the blower, wherein the predetermined gear can be set to 1st gear, but the present invention is not limited to this.

[0041] When the electric vehicle is not started or the blower is not turned on, the intake ratio control function of the blower is turned off.

[0042] According to the embodiment of the present invention, turning on the air intake ratio control function means further determining whether to turn on the air intake ratio control of the blower based on the detected current blower gear position, current vehicle speed and passenger seat occupancy information. Turning off the air intake ratio control function means not making subsequent judgments and maintaining the existing air intake ratio control.

[0043] A specific process of starting the intake air ratio control function in the method for controlling the intake air ratio of a vehicle blower according to an embodiment of the present invention will be described in detail below.

[0044] According to the embodiment of the present invention, when it is determined to turn on the intake ratio control function, the HVAC control device 100 can determine whether the current state of the intake ratio control is in the intake ratio control on zone or the intake ratio control off zone based on the intake ratio control mapping table according to the detected current vehicle speed information and the current blower gear. The HVAC control device 100 determines whether the current state of the intake ratio control changes between the intake ratio control on zone and the intake ratio control off zone, and then further determines whether to turn on the intake ratio control of the blower based on whether there is a passenger sitting on the co-pilot seat and the change of the current state of the intake ratio control between the intake ratio control on zone and the intake ratio control off zone.

[0045] The HVAC control device 100 may include a memory, in which an intake ratio control mapping table (as shown in Table 1 below) preset based on vehicle speed information and blower gear is stored, and the intake ratio control mapping table is divided into an intake ratio control on area and an intake ratio control off area. As shown in Table 1 below, the symbol "◎" indicates an intake ratio control on area, and the symbol "X" indicates an intake ratio control off area.

[0046] Table 1

[0047]

[0048] When the blower gear is in gear 1, return to see Figure 1 , due to the low suction pressure of the blower, the cold air outside the car can easily enter the cab, which will reduce the temperature at the passenger side feet and the temperature at the driver side head. This situation may be uncomfortable for the driver and passengers, so the intake ratio control needs to be turned off. In this case, the blower's internal circulation intake ratio is zero, and the PTC power consumption is also relatively low. Similarly, when the vehicle speed is greater than or equal to 100KPH, under stable driving conditions, the PTC power consumption will not decrease, and the intake ratio control needs to be turned off. Therefore, the blower's internal circulation intake ratio is zero.

[0049] According to an implementation scheme of the present invention, the air intake ratio control is turned on to make the internal circulation air intake ratio of the blower reach a predetermined ratio, which can be set to 10%, 20%, 30%, 40%, 50% and the like of the total air intake volume. Further considering the reasons such as reducing the risk of fogging of vehicle windows, the predetermined ratio can be 30%. The air intake ratio control is turned off to make the internal circulation air intake ratio of the blower zero, but the present invention is not limited to these set predetermined ratios.

[0050] Therefore, when the current vehicle speed information and the current blower gear are detected, the HVAC control device 100 can determine whether the current state of the intake ratio control is in the intake ratio control on area or the intake ratio control off area based on the intake ratio control mapping table, and can determine the current state change of the intake ratio control, that is, whether it changes from the intake ratio control on area to the intake ratio control off area, or from the intake ratio control off area to the intake ratio control on area.

[0051] Figure 4 The flowchart is a processing procedure of starting the intake air ratio control function in the method for controlling the intake air ratio of the blower of the vehicle according to the embodiment of the present invention.

[0052] See also Figure 4 In step S31, the HVAC control device 100 determines whether there is a passenger sitting on the passenger seat based on the passenger seat occupancy information detected by the passenger seat occupancy detection device 400. Based on whether there is a passenger sitting on the passenger seat, it is further determined whether to start the air intake ratio control of the blower according to the state change of the current air intake ratio control.

[0053] When it is determined that there is a passenger sitting on the front passenger seat ("Yes" in S31), in step S32, it is determined whether the current state of the air intake ratio control has changed, that is, the HVAC control device 100 determines the current state of the air intake ratio control in real time based on the air intake ratio control mapping table according to the current vehicle speed information and the current blower gear, and determines whether the current state of the air intake ratio control will change.

[0054] When it is determined in step S33 that the current state of the intake ratio control has changed from the intake ratio control open zone to the intake ratio control closed zone, or when it is determined in step S34 that the current state of the intake ratio control has changed from the intake ratio control closed zone to the intake ratio control open zone, determine whether the time for which the current state of the intake ratio control is maintained is greater than or equal to the first intake ratio control switching delay time.

[0055] When it is determined that the current state of the intake ratio control has changed from the intake ratio control open zone to the intake ratio control closed zone, if the time that the current state of the intake ratio control remains in the intake ratio control closed zone is greater than or equal to the first intake ratio control switching delay time (i.e., "Yes" in step S35), the intake ratio control is changed to closed, thereby preventing the temperature of the passenger's feet from decreasing; if the time that the current state of the intake ratio control remains in the intake ratio control closed zone is less than the first intake ratio control switching delay time (i.e., "No" in step S35), the intake ratio control is kept open, that is, the current state of the intake ratio control has not maintained the first intake ratio control switching delay time and has changed, then the intake ratio control cannot be switched, and the state change and holding time are re-judged.

[0056] Similarly, when it is determined that the current state of the air intake ratio control has changed from the air intake ratio control closed zone to the air intake ratio control open zone, if the time that the current state of the air intake ratio control remains in the air intake ratio control open zone is greater than or equal to the first air intake ratio control switching delay time (i.e., "Yes" in step S36), the air intake ratio control is changed to open, so that the PTC power consumption can be reduced; if the time that the current state of the air intake ratio control remains in the air intake ratio control open zone is less than the first air intake ratio control switching delay time (i.e., "No" in step S36), the air intake ratio control is kept closed, that is, no switching is performed.

[0057] When it is determined that there is no passenger sitting on the front passenger seat ("No" in S31), in step S37, it is determined whether the state of the current intake ratio control has changed. When it is determined in step S38 that the state of the current intake ratio control has changed from the intake ratio control opening zone to the intake ratio control closing zone, it is determined whether the time for which the state of the current intake ratio control is maintained is greater than or equal to the second intake ratio control switching delay time. When it is determined in step S39 that the state of the current intake ratio control has changed from the intake ratio control closing zone to the intake ratio control opening zone, it is determined whether the time for which the state of the current intake ratio control is maintained is greater than or equal to the first intake ratio control switching delay time.

[0058] When it is determined that the current state of the intake ratio control has changed from the intake ratio control open zone to the intake ratio control closed zone, if the time that the current state of the intake ratio control remains in the intake ratio control closed zone is greater than or equal to the second intake ratio control switching delay time (i.e., "Yes" in S40), the intake ratio control is changed to closed, thereby preventing the temperature at the driver's head from decreasing; if the time that the current state of the intake ratio control remains in the intake ratio control closed zone is less than the second intake ratio control switching delay time (i.e., "No" in S40), the intake ratio control is kept open, i.e., no switching is performed.

[0059] Similarly, when it is determined that the current state of the air intake ratio control has changed from the air intake ratio control closed zone to the air intake ratio control open zone, if the time that the current state of the air intake ratio control remains in the air intake ratio control open zone is greater than or equal to the first air intake ratio control switching delay time (i.e., "Yes" in S41), the air intake ratio control is changed to open, so that the PTC power consumption is reduced; if the time that the current state of the air intake ratio control remains in the air intake ratio control open zone is less than the first air intake ratio control switching delay time (i.e., "No" in S41), the air intake ratio control is kept closed, that is, no switching is performed.

[0060] According to an embodiment of the present invention, the first air intake ratio control switching delay time and the second air intake ratio control switching delay time can be preset and stored in the memory of the HVAC control device 100. When there is a passenger sitting on the front passenger seat, the air intake ratio control is closed for 10 seconds, and the temperature of the passenger's feet on the front passenger seat will drop significantly; and when there is no passenger sitting on the front passenger seat, the air intake ratio control is closed for 70 seconds, and the temperature of the driver's head will drop significantly. In one example, the first air intake ratio control switching delay time can be set to 10 seconds, and the second air intake ratio control switching delay time can be set to 70 seconds, but the present invention is not limited to this.

[0061] According to an implementation scheme of the present invention, for electric vehicles that are not equipped with automatic defogger sensors, by obtaining the passenger seating information on the front passenger seat, the vehicle speed information and the blower gear position, it is determined whether to turn on the air intake ratio control of the blower, thereby preventing the temperature of the front passenger's feet and the driver's head from dropping in a low temperature environment, improving the driving and riding comfort of the driver and passengers, and being able to reduce the power consumption of the positive temperature coefficient (PTC) equipment, thereby increasing the pure electric driving mileage of the electric vehicle in winter.

[0062] The various embodiments of the invention are not an exhaustive list of all possible combinations, but are intended to describe representative aspects of the invention, and what is described in various embodiments may be applied independently or in combinations of two or more.

[0063] The description presented in the above exemplary embodiments is only used to illustrate the technical solution of the present invention, and is not intended to be exhaustive, nor is it intended to limit the present invention to the precise form described. Obviously, it is possible for a person of ordinary skill in the art to make many changes and variations based on the above teachings. The exemplary embodiments are selected and described to explain the specific principles of the present invention and its practical application, so that other technicians in the field can easily understand, implement and use the various exemplary embodiments of the present invention and its various selected forms and modified forms. The scope of protection of the present invention is intended to be limited by the attached claims and their equivalent forms.

Claims

1. A system for controlling the air intake ratio of a vehicle blower, comprising: a blower gear position detection device configured to detect a blower gear position; a vehicle speed detection device configured to detect a current vehicle speed; a front passenger seat occupancy detection device configured to detect whether a passenger is seated on the front passenger seat; as well as The HVAC control device is electrically connected to the blower gear detection device, the vehicle speed detection device and the passenger seat occupancy detection device, and is configured as follows: receiving information from a passenger seat occupancy detection device, a vehicle speed detection device, and a blower gear position detection device; When the vehicle is started and the blower is turned on, it is determined whether to turn on the blower's intake ratio control based on the current blower gear position, current vehicle speed and passenger seat occupancy information.

2. The system for controlling the air intake ratio of a vehicle blower according to claim 1, wherein: The blower gear includes a plurality of gears, and the HVAC control device is further configured as follows: When the current blower gear is the preset gear, the air intake ratio control function of the blower is turned off; When the current blower gear is a gear other than a predetermined gear among the multiple gears, the air intake ratio control function of the blower is turned on.

3. The system for controlling the air intake ratio of a vehicle blower according to claim 2, wherein: The HVAC control device includes a memory, The memory stores an intake ratio control mapping table preset based on vehicle speed information and blower gear position, and the intake ratio control mapping table is divided into an intake ratio control on area and an intake ratio control off area; The memory also stores a predetermined first air intake ratio control switching delay time and a second air intake ratio control switching delay time; The HVAC control device is further configured to, when determining to start the air intake ratio control function of the blower: According to the current vehicle speed information and the current blower gear, based on the intake ratio control mapping table, determine whether the current state of the intake ratio control is in the intake ratio control on area or the intake ratio control off area, and determine the change of the current state of the intake ratio control between the intake ratio control on area and the intake ratio control off area.

4. The system for controlling the air intake ratio of a vehicle blower according to claim 3, wherein: The HVAC control device is further configured to, when it is determined that a passenger is seated on the front passenger seat: When it is determined that the current state of the intake ratio control changes from the intake ratio control on zone to the intake ratio control off zone, determining whether the time for which the current state of the intake ratio control remains in the intake ratio control off zone is greater than or equal to the first intake ratio control switching delay time; If the current state of the air intake ratio control remains in the air intake ratio control closing zone for a time greater than or equal to the first air intake ratio control switching delay time, the air intake ratio control is changed to closed; If the current state of the air intake ratio control remains in the air intake ratio control closing zone for a time period shorter than the first air intake ratio control switching delay time, the air intake ratio control is kept opened.

5. The system for controlling the air intake ratio of a vehicle blower according to claim 4, wherein: The HVAC control device is further configured as follows: When it is determined that the current state of the intake ratio control changes from the intake ratio control closed region to the intake ratio control open region, determining whether the time for which the current state of the intake ratio control remains in the intake ratio control open region is greater than or equal to the first intake ratio control switching delay time; If the current state of the air intake ratio control remains in the air intake ratio control on zone for a time greater than or equal to the first air intake ratio control switching delay time, the air intake ratio control is changed to on; If the current state of the intake ratio control remains in the intake ratio control on zone for a time shorter than the first intake ratio control switching delay time, the intake ratio control is kept off.

6. The system for controlling the air intake ratio of a vehicle blower according to claim 3, wherein: The HVAC control device is further configured to, when it is determined that there is no passenger sitting on the front passenger seat: When it is determined that the current state of the intake ratio control changes from the intake ratio control on zone to the intake ratio control off zone, determining whether the time for which the current state of the intake ratio control remains in the intake ratio control off zone is greater than or equal to the second intake ratio control switching delay time; If the current state of the air intake ratio control remains in the air intake ratio control closing zone for a time period greater than or equal to the second air intake ratio control switching delay time, the air intake ratio control is changed to closed; If the time for which the current state of the intake ratio control remains in the intake ratio control closing zone is less than the second intake ratio control switching delay time, the intake ratio control is kept turned on.

7. The system for controlling the air intake ratio of a vehicle blower according to claim 6, wherein: The HVAC control device is further configured as follows: When it is determined that the current state of the intake ratio control changes from the intake ratio control closed region to the intake ratio control open region, determining whether the time for which the current state of the intake ratio control remains in the intake ratio control open region is greater than or equal to the first intake ratio control switching delay time; If the current state of the air intake ratio control remains in the air intake ratio control on zone for a time greater than or equal to the first air intake ratio control switching delay time, the air intake ratio control is changed to on; If the current state of the intake ratio control remains in the intake ratio control on zone for a time shorter than the first intake ratio control switching delay time, the intake ratio control is kept off.

8. The system for controlling the air intake ratio of a vehicle blower according to claim 1, wherein: Turning on the air intake ratio control is to make the internal circulation air intake ratio of the blower reach a predetermined ratio, and the predetermined ratio is 30% of the total air intake volume; Closing the air intake ratio control makes the internal circulation air intake ratio of the blower zero.

9. The system for controlling the air intake ratio of a vehicle blower according to claim 2, wherein: The predetermined gear position is 1st gear.

10. The system for controlling the air intake ratio of a vehicle blower according to claim 3, wherein: The first air intake ratio control switching delay time is set to 10 seconds, and the second air intake ratio control switching delay time is set to 70 seconds.

11. A method for controlling an air intake ratio of a vehicle blower, comprising: Check the blower gear position; Detect the current speed of the vehicle; Detect whether there is a passenger sitting in the front passenger seat; When the vehicle is started and the blower is turned on, it is determined whether to turn on the blower's intake ratio control based on the current blower gear position, current vehicle speed and passenger seat occupancy information.

12. The method for controlling the air intake ratio of a vehicle blower according to claim 11, wherein: The blower gear includes multiple gears. When the current blower gear is the preset gear, the air intake ratio control function of the blower is turned off; When the current blower gear is a gear other than a predetermined gear among the multiple gears, the air intake ratio control function of the blower is turned on.

13. The method for controlling the air intake ratio of a vehicle blower according to claim 12, wherein: storing an intake ratio control mapping table preset based on vehicle speed information and a blower gear, wherein the intake ratio control mapping table is divided into an intake ratio control on area and an intake ratio control off area; storing a predetermined first air intake ratio control switching delay time and a predetermined second air intake ratio control switching delay time; When it is determined that the air intake ratio control function of the blower is turned on, determining whether the current state of the air intake ratio control is in the air intake ratio control on zone or the air intake ratio control off zone based on the air intake ratio control mapping table according to the current vehicle speed information and the current blower gear position; Determine whether the current state of the air intake ratio control changes between the air intake ratio control opening region and the air intake ratio control closing region.

14. The method for controlling the air intake ratio of a vehicle blower according to claim 13, wherein: When it is determined that there is a passenger sitting in the front passenger seat: When it is determined that the current state of the intake ratio control changes from the intake ratio control on zone to the intake ratio control off zone, determining whether the time for which the current state of the intake ratio control remains in the intake ratio control off zone is greater than or equal to the first intake ratio control switching delay time; If the current state of the air intake ratio control remains in the air intake ratio control closing zone for a time greater than or equal to the first air intake ratio control switching delay time, the air intake ratio control is changed to closed; If the current state of the air intake ratio control remains in the air intake ratio control closing zone for a time period shorter than the first air intake ratio control switching delay time, the air intake ratio control is kept opened.

15. The method for controlling the air intake ratio of a vehicle blower according to claim 14, wherein: When it is determined that the current state of the intake ratio control changes from the intake ratio control closed region to the intake ratio control open region, determining whether the time for which the current state of the intake ratio control remains in the intake ratio control open region is greater than or equal to the first intake ratio control switching delay time; If the current state of the air intake ratio control remains in the air intake ratio control on zone for a time greater than or equal to the first air intake ratio control switching delay time, the air intake ratio control is changed to on; If the current state of the intake air ratio control remains in the intake air ratio control closing zone for a time period shorter than the first intake air ratio control switching delay time, the intake air ratio control is kept closed.

16. The method for controlling the air intake ratio of a vehicle blower according to claim 13, wherein: When it is determined that there is no passenger sitting in the front passenger seat: When it is determined that the current state of the intake ratio control changes from the intake ratio control on zone to the intake ratio control off zone, determining whether the time for which the current state of the intake ratio control remains in the intake ratio control off zone is greater than or equal to the second intake ratio control switching delay time; If the current state of the air intake ratio control remains in the air intake ratio control closing zone for a time period greater than or equal to the second air intake ratio control switching delay time, the air intake ratio control is changed to closed; If the time for which the current state of the intake ratio control remains in the intake ratio control closing zone is less than the second intake ratio control switching delay time, the intake ratio control is kept turned on.

17. The method for controlling the air intake ratio of a vehicle blower according to claim 16, wherein: When it is determined that the current state of the intake ratio control changes from the intake ratio control closed region to the intake ratio control open region, determining whether the time for which the current state of the intake ratio control remains in the intake ratio control open region is greater than or equal to the first intake ratio control switching delay time; If the current state of the air intake ratio control remains in the air intake ratio control on zone for a time greater than or equal to the first air intake ratio control switching delay time, the air intake ratio control is changed to on; If the current state of the intake ratio control remains in the intake ratio control on zone for a time shorter than the first intake ratio control switching delay time, the intake ratio control is kept off.

18. The method for controlling the air intake ratio of a vehicle blower according to claim 11, wherein: Turning on the air intake ratio control is to make the internal circulation air intake ratio of the blower reach a predetermined ratio, and the predetermined ratio is 30% of the total air intake volume; Closing the air intake ratio control makes the internal circulation air intake ratio of the blower zero.

19. The method for controlling the air intake ratio of a vehicle blower according to claim 12, wherein: The predetermined gear position is 1st gear.

20. The method for controlling the air intake ratio of a vehicle blower according to claim 13, wherein: The first air intake ratio control switching delay time is set to 10 seconds, and the second air intake ratio control switching delay time is set to 70 seconds.

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