Fresh air exchange system for vehicle cabin

Abstract

The invention provides a vehicle cabin fresh air exchange system which is arranged on a vehicle and comprises an air conditioner air inlet module arranged on the front portion of a cabin, and the air conditioner air inlet module comprises an air inlet fan, an air inlet door and a filter; the exhaust module is arranged at the side tail part of the trunk and comprises an exhaust fan and an exhaust air door; the detection module is used for detecting at least one of environment parameters inside the vehicle, environment parameters outside the vehicle, whether people exist inside the vehicle or not and gas exchange capacity inside and outside the vehicle in real time; the control module is used for controlling the opening and closing of the air inlet door and the air exhaust door and the operation states of the air inlet fan and the air exhaust fan according to the detection result of the detection module; the exhaust module is arranged and matched with the air conditioner air inlet module, external air can be guided in from the front portion of the vehicle, internal air can be guided out from the rear portion of the vehicle, and the purposes of reducing the internal temperature and exhausting turbid air are achieved; and meanwhile, the control module controls the air inlet module and the air exhaust module of the air conditioner, so that the exchange system has the characteristics of intelligence and low energy consumption.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a vehicle cabin air fresh air exchange system. Background Art

[0002] During the daily use of the vehicle, various problems will arise in the internal environment of the cabin, such as high temperatures caused by long-term exposure to the sun in the summer, pungent odors of toluene, ethylbenzene, formaldehyde, etc. emitted from the vehicle interior, and pollutants from the external environment entering the vehicle while the vehicle is driving. Problems such as the above have an adverse effect on the riding experience and physical and mental health of the driver and passengers. When encountering the above problems, the traditional method is usually to use the car air-conditioning system to cool and ventilate the interior of the cabin, and open the windows to assist in gas exchange. However, the air-conditioning system has always been an important consumer of vehicle energy applications, which has caused trouble and concern for vehicle manufacturers. Opening the windows also makes it easy for dust and pollutants from the external environment to enter the vehicle. Therefore, designing a low-energy vehicle cabin temperature and air quality adjustment method is an issue that needs to be urgently addressed. Summary of the invention

[0003] The purpose of this application is to solve the above problems and provide a vehicle cabin air fresh air exchange system, which is arranged on the vehicle and includes: An air-conditioning air-intake module, the air-conditioning air-intake module is arranged at the front part of the cabin of the vehicle, and comprises an air-intake fan, an air-intake damper and a filter, the air-intake fan is used to allow the air outside the vehicle to enter the interior of the vehicle through the air-intake damper; An exhaust module, the exhaust module is arranged at the rear part of the trunk side of the vehicle, and comprises an exhaust fan and an exhaust damper, the exhaust fan is used to discharge the air inside the vehicle to the outside of the vehicle through the exhaust damper; a detection module, the detection module being used to detect in real time at least one of an environmental parameter inside the vehicle, an environmental parameter outside the vehicle, whether there is a person inside the vehicle, and an amount of gas exchange between the inside and outside of the vehicle; A control module, the control module is electrically connected to the air-conditioning air intake module, the exhaust module and the detection module respectively; the control module is used to control the opening and closing of the air intake damper and the exhaust damper and the operating status of the air intake fan and the exhaust fan according to at least one of human control, the state of the vehicle, the environmental parameters inside the vehicle, the environmental parameters outside the vehicle, whether there are people inside the vehicle, and the gas exchange volume between the inside and outside of the vehicle.

[0004] According to the technical solution provided by certain embodiments of the present application, the detection module includes an in-vehicle temperature detection unit and / or an in-vehicle air detection unit, the in-vehicle temperature detection unit is used to detect the temperature inside the vehicle in real time, and the in-vehicle air detection unit is used to detect the concentration of pollutants inside the vehicle in real time; when the vehicle switches from a stopped state to a started state or the vehicle is in a started state, if the temperature inside the vehicle is greater than or equal to a first set value, or the concentration of pollutants inside the vehicle is greater than or equal to a second set value, the control module opens the air inlet damper and the exhaust damper and starts the air inlet fan and / or the exhaust fan.

[0005] According to the technical solution provided in certain embodiments of the present application, the detection module also includes a human body sensing unit, which is used to detect in real time whether there is a person inside the vehicle; when the vehicle is in a stopped state and there is a person inside the vehicle, the control module opens the air inlet damper and the exhaust damper and starts the air inlet fan and / or the exhaust fan according to the environmental parameters inside and / or outside the vehicle.

[0006] According to the technical solutions provided by certain embodiments of the present application, the detection module further includes an outside temperature detection unit, which is used to detect the temperature outside the vehicle in real time; when the temperature difference between the inside of the vehicle and the outside of the vehicle is less than a third set value or the amount of gas exchange between the inside and outside of the vehicle reaches a fourth set value, the control module reduces the operating speeds of the air intake fan and the exhaust fan, and closes the air intake damper and the exhaust damper and stops the air intake fan and the exhaust fan after a set time, or the control module reduces the operating speeds of the air intake fan and the exhaust fan, and closes the air intake damper and the exhaust damper and stops the air intake fan and the exhaust fan when the temperature difference between the inside of the vehicle and the outside of the vehicle is less than a fifth set value or the amount of gas exchange between the inside and outside of the vehicle reaches a sixth set value; Or when the temperature difference between the inside and outside of the vehicle is less than a third set value or the gas exchange volume between the inside and outside of the vehicle reaches a fourth set value, the control module closes the air inlet damper and the exhaust damper and stops the air inlet fan and the exhaust fan.

[0007] According to the technical solutions provided by certain embodiments of the present application, the detection module further includes an outside temperature detection unit, which is used to detect the temperature outside the vehicle in real time; when the air conditioning and refrigeration system of the vehicle is started, if the temperature difference between the inside of the vehicle and the outside of the vehicle is less than a third set value, the control module reduces the running speed of the exhaust fan, and closes the exhaust damper and stops the exhaust fan after a set time, or the control module reduces the running speed of the exhaust fan, and when the temperature difference between the inside of the vehicle and the outside of the vehicle is less than a fifth set value or the gas exchange amount between the inside and outside of the vehicle reaches a sixth set value, the control module closes the exhaust damper and stops the exhaust fan; Alternatively, when the air conditioning and refrigeration system of the vehicle is started, if the temperature difference between the temperature inside the vehicle and the temperature outside the vehicle is less than a third set value, the control module closes the exhaust damper and stops the exhaust fan.

[0008] According to the technical solutions provided in certain embodiments of the present application, when the vehicle switches from a start state to a stop state, the control module closes the air inlet damper and the air exhaust damper and stops the air inlet fan and the exhaust fan.

[0009] According to the technical solution provided in certain embodiments of the present application, when the vehicle is in a stopped state and the fresh air exchange system is turned off, if the pollutant concentration inside the vehicle is greater than or equal to the second set value, the control module opens the air inlet damper and the exhaust damper and starts the air inlet fan and / or the exhaust fan.

[0010] According to the technical solution provided by certain embodiments of the present application, the detection module also includes an outdoor air detection unit, which is used to detect the pollutant concentration outside the vehicle in real time; when the pollutant concentration outside the vehicle is greater than or equal to the second set value, the control module closes the air inlet damper and the exhaust damper and stops the air inlet fan and the exhaust fan.

[0011] According to the technical solutions provided in certain embodiments of the present application, the human body sensing unit includes one or more of a seat occupancy switch, a millimeter wave detection sensor, an infrared image detector, and a capacitive human body sensor.

[0012] According to the technical solutions provided in certain embodiments of the present application, the in-vehicle air detection unit and the out-vehicle air detection unit both include one or more of an aldehyde gas sensor, a carbon dioxide sensor and an odor sensor.

[0013] Compared with the prior art, the beneficial effects of the present application are as follows: the present application provides a vehicle cabin air fresh air exchange system, which is arranged on the vehicle, and includes an air-conditioning air intake module, an air exhaust module and a detection module. The air-conditioning air intake module is arranged at the front part of the vehicle's cabin, and includes an air intake fan, an air intake damper and a filter. The air intake fan is used to allow the air outside the vehicle to enter the vehicle through the air intake damper; the exhaust module is arranged at the rear part of the trunk side of the vehicle, and includes an exhaust fan and an exhaust damper. The exhaust fan is used to allow the air inside the vehicle to be discharged to the outside of the vehicle through the exhaust damper; the detection module is used to detect in real time at least one of the environmental parameters inside the vehicle, the environmental parameters outside the vehicle, whether there are people inside the vehicle, and the gas exchange volume between the vehicle and the outside; and the control module is also included, which is electrically connected to the air-conditioning air intake module, the exhaust module and the detection module, respectively, and is used to detect the fresh air exchange volume between the vehicle and the outside according to human factors. The control module controls the opening and closing of the air inlet damper and the exhaust damper and the operating state of the air inlet fan and / or the exhaust fan by controlling at least one of the following: the state of the vehicle, the environmental parameters inside the vehicle, the environmental parameters outside the vehicle, the presence of personnel inside the vehicle, and the amount of gas exchange between the inside and outside of the vehicle; by arranging an exhaust module at the rear of the vehicle cabin, in conjunction with the air conditioning air inlet module of the automobile air conditioning system, the air outside the vehicle can be introduced from the front of the vehicle cabin, and the air inside the vehicle can be exported from the rear of the vehicle cabin, so as to actively renew the air inside the vehicle, thereby lowering the temperature inside the cabin and exhausting the turbid air inside the cabin; at the same time, the control module can control the operating state of the air conditioning air inlet module and the exhaust module according to factors such as the state of the vehicle, the environmental parameters inside and outside the vehicle, and the situation of the personnel inside the vehicle, so that the fresh air exchange system has the characteristics of intelligence and low energy consumption.

[0014] It should be understood that the description of technical features, technical solutions, beneficial effects or similar language in this application does not imply that all features and advantages can be realized in any single embodiment. On the contrary, it is understood that the description of features or beneficial effects means that specific technical features, technical solutions or beneficial effects are included in at least one embodiment. Therefore, the description of technical features, technical solutions or beneficial effects in this specification does not necessarily refer to the same embodiment. Furthermore, the technical features, technical solutions and beneficial effects described in the present embodiment can also be combined in any appropriate manner. Those skilled in the art will understand that the embodiment can be realized without one or more specific technical features, technical solutions or beneficial effects of a specific embodiment. In other embodiments, additional technical features and beneficial effects can also be identified in a specific embodiment that does not embody all embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 A system block diagram of a vehicle cabin air fresh air exchange system provided in an embodiment of the present application; Figure 2 A schematic diagram of the location of a vehicle cabin air fresh air exchange system provided in an embodiment of the present application inside a vehicle; Figure 3 A schematic diagram of the position of an exhaust module of a vehicle cabin air fresh air exchange system provided in an embodiment of the present application; Figure 4 A schematic diagram of the split structure of an exhaust module of a vehicle cabin air fresh air exchange system provided in an embodiment of the present application.

[0017] The text annotations in the figure represent: 1. Air-conditioning air intake module; 2. Exhaust module; 3. Control module; 4. In-vehicle temperature detection unit; 5. Outside-vehicle temperature detection unit; 6. In-vehicle air detection unit; 7. Outside-vehicle air detection unit; 8. Human body sensing unit; 21. Exhaust fan; 22. Flap bracket; 23. Inner filter; 24. Filter; 25. Flap; 26. Rack; 27. Driven gear; 28. Motor; 221. Vent. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the technical solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings. The description in this section is only exemplary and explanatory and should not have any limiting effect on the protection scope of the present application. Specifically, the described embodiments are only embodiments of a part of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present invention.

[0019] It should be noted that similar reference numerals and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0020] As mentioned in the background technology, in order to solve the problems existing in the prior art, this embodiment provides a vehicle cabin air fresh air exchange system, which is arranged on the vehicle and includes: The air-conditioning air-intake module 1 is arranged at the front of the vehicle's cabin, and includes an air-intake fan, an air-intake damper and a filter. The air-intake fan is used to allow air outside the vehicle to enter the vehicle through the air-intake damper; The exhaust module 2 is arranged at the rear part of the trunk of the vehicle, and includes an exhaust fan 21 and an exhaust damper. The exhaust fan 21 is used to discharge the air inside the vehicle to the outside of the vehicle through the exhaust damper; A detection module, the detection module is used to detect in real time at least one of the environmental parameters inside the vehicle, the environmental parameters outside the vehicle, whether there are people inside the vehicle, and the amount of gas exchange between the inside and outside of the vehicle; The control module 3 is electrically connected to the air-conditioning air intake module 1, the exhaust module 2 and the detection module respectively; the control module 3 is used to control the opening and closing of the air intake damper and the exhaust damper and the operating status of the air intake fan and the exhaust fan 21 according to at least one of human control, the state of the vehicle, the environmental parameters inside the vehicle, the environmental parameters outside the vehicle, whether there are people inside the vehicle, and the gas exchange volume inside and outside the vehicle.

[0021] like Figure 1-3As shown, the air conditioning air intake module 1 adopts the air conditioning air intake duct and blower of the external circulation air intake device of the traditional automobile air conditioning system, is located in the front part of the vehicle cabin, and can introduce the air outside the vehicle into the vehicle cabin. At the same time, the air conditioning air intake duct is provided with an air intake damper that can be controlled to open and close by the control module 3, and an air conditioning filter that can filter the gas entering the vehicle cabin to prevent dust and impurities in the air from entering the vehicle cabin; the exhaust module 2 is arranged at the rear fender of the vehicle, including an exhaust duct, an exhaust fan 21 arranged at the exhaust duct, and a control module 3 for controlling the exhaust. The exhaust damper that opens and closes the air duct is arranged near the exhaust module 2 at the rear of the vehicle and can cooperate with the air conditioning air intake module 1 at the front of the vehicle cabin. After the outside air enters the vehicle cabin, it can flow through the entire cabin from front to back and then be discharged, so that the air in the cabin can flow fully and ensure that the turbid air inside is completely discharged; at the same time, the exhaust duct arranged at the rear of the vehicle side is more conducive to isolating the connection between the inside and outside of the cabin when the exhaust damper is closed, compared with the exhaust duct arranged on the top of the vehicle or other positions, so as to prevent dust or rain from entering the cabin in bad weather.

[0022] like Figure 4 As shown, the exhaust module 2 also includes an inner filter 23, which is arranged on a side of the exhaust fan 21 close to the vehicle cabin, and the exhaust damper is arranged on a side of the exhaust fan 21 away from the inner filter 23. A filter 24 is also arranged between the inner filter 23 and the exhaust fan 21, and the filter 24 can also be a filter. The inner filter 23 and the filter 24 are mainly used to prevent dust and impurities in the external environment from entering the vehicle. The inner filter 23 is also used to prevent debris in the vehicle from being sucked into the exhaust fan 21; the exhaust damper includes a flap bracket 22 with a plurality of vents 221, and a plurality of flaps 25 corresponding to the vents 221 are rotatably connected to the flap bracket 22, and a mounting groove is provided on one side of the flap bracket 22 for mounting. A rack 26 is slidably fitted in the mounting groove, and a driven gear 27 is fixed to one end of the plurality of flaps 25 close to the mounting groove, and the plurality of driven gears 27 are all meshed with the rack 26; a motor 28 is also provided on the flap 25 bracket 22, and a driving gear is fixed to the driving shaft of the motor 28, and the driving gear is also meshed with the rack 26. The driving gear is driven by the motor 28 to rotate, driving the rack 26 to slide along the mounting groove, and then transmitted through the plurality of driven gears 27, so that the plurality of flaps 25 rotate relative to the flap bracket 22, thereby opening or closing the plurality of vents 221; in other embodiments of the present application, the exhaust damper may also be replaced by a pneumatic flap mechanism or a self-hanging shutter mechanism, which is not specifically limited here.

[0023] The detection module can detect the temperature inside and outside the vehicle, the concentration and odor of various pollutants in the air inside and outside the vehicle in real time, and also has a human body detection function, which can detect whether there is a person in the vehicle cabin; the control module 3 adopts a traditional automotive electronic controller, that is, a vehicle ECU. The control module 3 can be electrically connected to each detection unit of the detection module through communication methods such as lin-bus or can-bus. It can make a comprehensive judgment based on human control, the state of the vehicle, the environmental parameters inside and outside the vehicle, and whether there are people inside the vehicle, control the air-conditioning intake module 1 and the exhaust module 2, set a reasonable speed for the intake fan and the exhaust fan 21, and on the basis of updating the air inside the cabin, make the fresh air exchange system of this embodiment have lower energy consumption and cost than the traditional solution.

[0024] When the fresh air exchange system is started, the air inlet damper and the exhaust damper are opened, and the control module 3 controls the operating states of the air inlet fan and the exhaust fan 21 according to the current actual situation of the vehicle to set different working modes. For example, the air inlet fan and the exhaust fan 21 are started at the same time, the air inlet fan introduces the air outside the vehicle into the vehicle through the air inlet damper, and the exhaust fan 21 guides the air inside the vehicle to the outside of the vehicle through the exhaust damper. At this time, the gas exchange efficiency of the fresh air exchange system is the highest; or the exhaust fan 21 is started, the air inlet fan remains stopped, and the exhaust fan 21 guides the air inside the vehicle to the outside of the vehicle through the exhaust damper. When the air pressure inside the vehicle is lower than that outside the vehicle, the vehicle The air outside the vehicle is sucked into the vehicle through the air inlet damper. At this time, the gas exchange efficiency of the fresh air exchange system is lower than that of the previous mode; or the air inlet fan is started and the exhaust fan 21 remains stopped. The air inlet fan introduces the air outside the vehicle into the vehicle through the air inlet damper. When the air pressure inside the vehicle is greater than that outside the vehicle, the air inside the vehicle is discharged to the outside of the vehicle through the exhaust damper. At this time, the gas exchange efficiency of the fresh air exchange system is the lowest; further, the control module 3 can also adjust the rotation speed of the air inlet fan and the exhaust fan 21 according to the vehicle status, the status of the occupants in the vehicle and the internal and external environmental parameters obtained by the detection units of the detection module, so as to further improve the energy-saving effect of the fresh air exchange system.

[0025] By arranging an exhaust module 2 at the rear of the vehicle cabin and cooperating with the air conditioning intake module 1 of the automobile air conditioning system, the air outside the vehicle can be introduced from the front of the vehicle cabin, and the air inside the vehicle can be discharged from the rear of the vehicle cabin, so as to actively update the air inside the vehicle, thereby achieving the purpose of lowering the temperature inside the cabin and exhausting the turbid air inside the cabin; at the same time, the control module 3 can control the air conditioning intake module 1 and the exhaust module 2 according to factors such as the vehicle state, the internal and external environmental parameters of the vehicle, so that the fresh air exchange system has the characteristics of intelligence and low energy consumption.

[0026] In a preferred embodiment, the detection module includes an in-vehicle temperature detection unit 4 and / or an in-vehicle air detection unit 6, the in-vehicle temperature detection unit 4 is used to detect the temperature inside the vehicle in real time, and the in-vehicle air detection unit 6 is used to detect the concentration of pollutants inside the vehicle in real time; when the vehicle switches from a stopped state to a started state or the vehicle is in a started state, if the temperature inside the vehicle is greater than or equal to a first set value, or the concentration of pollutants inside the vehicle is greater than or equal to a second set value, the control module 3 opens the air inlet damper and the exhaust damper and starts the air inlet fan and / or the exhaust fan 21.

[0027] In a preferred embodiment, the detection module further includes an outside temperature detection unit 5, which is used to detect the temperature outside the vehicle in real time; when the temperature difference between the inside of the vehicle and the outside of the vehicle is less than a third set value or the amount of gas exchange between the inside and outside of the vehicle reaches a fourth set value, the control module 3 reduces the operating speed of the air intake fan and the exhaust fan 21, and closes the air intake damper and the exhaust damper and stops the air intake fan and the exhaust fan 21 after a set time, or the control module 3 reduces the operating speed of the air intake fan and the exhaust fan 21, and closes the air intake damper and the exhaust damper and stops the air intake fan and the exhaust fan 21 when the temperature difference between the inside of the vehicle and the outside of the vehicle is less than a fifth set value or the amount of gas exchange between the inside and outside of the vehicle reaches a sixth set value; Alternatively, when the temperature difference between the inside and outside of the vehicle is less than the third set value or the gas exchange volume between the inside and outside of the vehicle reaches the fourth set value, the control module 3 closes the air inlet damper and the exhaust damper and stops the air inlet fan and the exhaust fan 21.

[0028] In a preferred embodiment, when the air conditioning refrigeration system of the vehicle is started, if the temperature difference between the inside of the vehicle and the outside of the vehicle is less than the third set value, the control module 3 reduces the running speed of the exhaust fan 21, and closes the exhaust damper and stops the exhaust fan 21 after a set time, or, the control module 3 reduces the running speed of the exhaust fan 21, and when the temperature difference between the inside of the vehicle and the outside of the vehicle is less than the fifth set value or the gas exchange amount between the inside and the outside of the vehicle reaches the sixth set value, the control module 3 closes the exhaust damper and stops the exhaust fan 21; Alternatively, when the air conditioning and refrigeration system of the vehicle is started, if the temperature difference between the temperature inside the vehicle and the temperature outside the vehicle is less than the third set value, the control module 3 closes the exhaust damper and stops the exhaust fan 21 .

[0029] In a preferred embodiment, when the vehicle switches from the start state to the stop state, the control module 3 closes the air inlet damper and the air exhaust damper and stops the air inlet fan and the air exhaust fan 21 .

[0030] In a preferred embodiment, the in-vehicle air detection unit 6 and the out-vehicle air detection unit 7 both include one or more of an aldehyde gas sensor, a carbon dioxide sensor, and an odor sensor.

[0031] like Figure 1 As shown, the in-vehicle temperature detection unit 4 includes a temperature sensor, and the in-vehicle air detection unit 6 includes an aldehyde gas sensor, a carbon dioxide sensor and an odor sensor. The in-vehicle temperature detection unit 4 and the in-vehicle air detection unit 6 are both arranged inside the vehicle cabin; the vehicle is in a closed state, when the vehicle door is opened or remotely started or the vehicle is in a started state, the in-vehicle temperature detection unit 4 detects the current temperature inside the vehicle cabin and generates a first temperature signal to send to the control module 3, the in-vehicle air detection unit 6 detects the current pollutant concentration inside the vehicle cabin and generates a first concentration signal to send to the control module 3, the control module 3 makes a judgment based on the first temperature signal and the first concentration signal, when the temperature value inside the vehicle cabin is greater than or equal to the first set value or the pollutant concentration value is greater than or equal to the second set value, the control module 3 starts the air conditioning intake module 1 and the exhaust module 2, and sets the working mode of the fresh air exchange system according to the detection value.

[0032] The outside temperature detection module also includes a temperature sensor, and the outside temperature detection unit 5 is arranged outside the vehicle; when the fresh air exchange system is working, the inside temperature detection unit 4 detects the current temperature inside the vehicle cabin and generates a second temperature signal to send to the control module 3, and the outside temperature detection unit 5 detects the current temperature outside the vehicle and generates a third temperature signal to send to the control module 3. The control module 3 can make judgments based on the second temperature signal and the third temperature signal to control the start and stop of the air conditioning intake module 1 and the exhaust module 2; further, a gas flow meter can be set at the air intake damper or the exhaust damper, or the operating time and rotation speed of the air intake fan or the exhaust fan 21 can be monitored by the control module 3 to calculate the gas exchange amount between the inside and outside of the vehicle, thereby controlling the air intake module 1 and the exhaust module 2 of the air conditioning. Start and stop; when the difference between the temperature value inside the vehicle cabin and the temperature value outside the vehicle is less than the third set value or the gas exchange volume between the inside and outside of the vehicle reaches the fourth set value, the control module 3 can directly turn off the air conditioning intake module 1 and the exhaust module 2, or it can first reduce the operating speed of the air intake fan and the exhaust fan 21 to ensure gas exchange between the inside and outside of the vehicle cabin while reducing the energy consumption of the air intake fan and the exhaust fan 21, and then after the air conditioning intake module 1 and the exhaust module 2 have been running for a certain period of time, or when the temperature difference between the inside and outside of the vehicle is less than the fifth set value or the gas exchange volume between the inside and outside of the vehicle reaches the sixth set value, the control module 3 will turn off the air conditioning intake module 1 and the exhaust module 2, the fifth set value is less than the third set value, and the sixth set value is greater than the fourth set value.

[0033] Furthermore, when the fresh air exchange system is working, if the automobile air conditioning refrigeration system is turned on at this time, the in-vehicle temperature detection unit 4 detects the current temperature inside the vehicle cabin and generates a fourth temperature signal to send to the control module 3, and the outside temperature detection unit 5 detects the current temperature outside the vehicle and generates a fifth temperature signal to send to the control module 3. The control module 3 makes a judgment based on the fourth temperature signal and the fifth temperature signal. When the difference between the temperature inside the vehicle and the temperature outside the vehicle is less than the third set value, the control module 3 can directly turn off the exhaust module 2, or reduce the running speed of the exhaust fan 21 first to ensure that the vehicle cabin is cool. While the gas inside and outside the cabin are exchanged, the energy consumption of the exhaust fan 21 is reduced. Then, after the air-conditioning air intake module 1 and the exhaust module 2 have been running for a certain period of time, or when the temperature difference between the inside of the vehicle and the outside of the vehicle is less than the fifth set value or the gas exchange volume between the inside and outside of the vehicle reaches the sixth set value, the control module 3 turns off the exhaust module 2. At this time, the start and stop of the air-conditioning air intake module 1 is related to the current working mode of the automobile air-conditioning refrigeration system. If the automobile air-conditioning refrigeration system is in the external circulation mode, the air-conditioning air intake module 1 remains on. If the automobile air-conditioning refrigeration system is in the internal circulation mode, the air-conditioning air intake module 1 is turned off.

[0034] Furthermore, when the fresh air exchange system is working, when the vehicle switches from the start state to the stop state, and the driver and passengers leave the cabin or the vehicle is locked, the control module 3 turns off the air conditioning intake module 1 and the exhaust module 2.

[0035] In a preferred embodiment, the detection module also includes a human body sensing unit 8, which is used to detect in real time whether there is a person inside the vehicle; when the vehicle is in a stopped state and there is a person inside the vehicle, the control module 3 opens the air inlet damper and the exhaust damper according to the environmental parameters inside and / or outside the vehicle and starts the air inlet fan and / or exhaust fan 21.

[0036] In a preferred embodiment, the human body sensing unit 8 includes one or more of a seat occupancy switch, a millimeter wave detection sensor, an infrared image detector, and a capacitive human body sensor.

[0037] like Figure 1As shown, the human body sensing unit 8 includes a seat occupancy switch, a millimeter wave detection sensor, an infrared image detector and a capacitive human body sensor; initially, the vehicle is in a closed state and the vehicle is locked, the human body sensing unit 8 detects whether there is a person inside the vehicle and generates a first sensing signal to send to the control module 3, the control module 3 makes a judgment based on the first sensing signal and the environmental parameters inside and outside the vehicle. When there is a person in the vehicle cabin and the environmental parameters reach the set value, the control module 3 starts the air conditioning intake module 1 and the exhaust module 2, and sets the working mode of the fresh air exchange system; further, a rainfall sensor can be set outside the vehicle to detect whether the current weather is rainy. The control module 3 can make a judgment based on the current weather conditions. If there is no abnormality in the weather at this time, the control module 3 can control the window to open at a set opening, assisting the vehicle cabin in exchanging gas with the outside while ensuring the safety of people and property in the vehicle.

[0038] In a preferred embodiment, when the vehicle is stopped and the fresh air exchange system is turned off, if the pollutant concentration inside the vehicle is greater than or equal to a second set value, the control module 3 opens the air inlet damper and the exhaust damper and starts the air inlet fan and / or the exhaust fan 21.

[0039] In a preferred embodiment, the detection module also includes an outdoor air detection unit 7, which is used to detect the pollutant concentration outside the vehicle in real time; when the pollutant concentration outside the vehicle is greater than or equal to a second set value, the control module 3 closes the air inlet damper and the exhaust damper and stops the air inlet fan and the exhaust fan 21.

[0040] like Figure 1 As shown, initially, the vehicle is in a closed state and the vehicle is locked. The in-vehicle air detection unit 6 detects the current pollutant concentration inside the vehicle cabin and generates a second concentration signal to send to the control module 3. The control module 3 makes a judgment based on the second concentration signal. When the pollutant concentration value inside the vehicle cabin is greater than or equal to the second set value, the control module 3 starts the air conditioning intake module 1 and the exhaust module 2, and sets the working mode of the fresh air exchange system.

[0041] The outside air detection unit 7 also includes an aldehyde gas sensor, a carbon dioxide sensor and an odor sensor. Furthermore, when the fresh air exchange system is working, the outside air detection unit 7 detects the current pollutant concentration outside the vehicle and generates a third concentration signal to send to the control module 3. The control module 3 makes a judgment based on the third concentration signal. When the pollutant concentration value outside the vehicle is greater than or equal to the second set value, the control module 3 turns off the air conditioning intake module 1 and the exhaust module 2.

[0042] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and its core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. A vehicle cabin air fresh air exchange system, arranged on a vehicle, characterized in that: include: An air-conditioning air-intake module (1), the air-conditioning air-intake module (1) being arranged at the front part of the cabin of the vehicle, comprising an air-intake fan, an air-intake damper and a filter, the air-intake fan being used to allow air outside the vehicle to enter the interior of the vehicle through the air-intake damper; An exhaust module (2), the exhaust module (2) being arranged at the rear part of the trunk of the vehicle, comprising an exhaust fan (21) and an exhaust damper, the exhaust fan (21) being used to discharge air inside the vehicle to the outside of the vehicle through the exhaust damper; a detection module, the detection module being used to detect in real time at least one of an environmental parameter inside the vehicle, an environmental parameter outside the vehicle, whether there is a person inside the vehicle, and an amount of gas exchange between the inside and outside of the vehicle; A control module (3), the control module (3) being electrically connected to the air-conditioning air intake module (1), the air exhaust module (2) and the detection module respectively; the control module (3) being used to control the opening and closing of the air intake damper and the air exhaust damper and the operating status of the air intake fan and the air exhaust fan (21) according to at least one of human control, the state of the vehicle, the environmental parameters inside the vehicle, the environmental parameters outside the vehicle, whether there are people inside the vehicle, and the gas exchange volume between the inside and outside of the vehicle.

2. A vehicle cabin air fresh air exchange system according to claim 1, characterized in that: The detection module comprises an in-vehicle temperature detection unit (4) and / or an in-vehicle air detection unit (6), wherein the in-vehicle temperature detection unit (4) is used to detect the temperature inside the vehicle in real time, and the in-vehicle air detection unit (6) is used to detect the concentration of pollutants inside the vehicle in real time; when the vehicle switches from a stopped state to a started state or the vehicle is in a started state, if the temperature inside the vehicle is greater than or equal to a first set value, or the concentration of pollutants inside the vehicle is greater than or equal to a second set value, the control module (3) opens the air inlet damper and the air exhaust damper and starts the air inlet fan and / or the air exhaust fan (21).

3. The vehicle cabin air fresh air exchange system according to claim 1, characterized in that: The detection module further comprises a human body sensing unit (8), wherein the human body sensing unit (8) is used to detect in real time whether there is a person inside the vehicle; when the vehicle is in a stopped state and there is a person inside the vehicle, the control module (3) opens the air inlet damper and the air exhaust damper and starts the air inlet fan and / or the air exhaust fan (21) according to environmental parameters inside and / or outside the vehicle.

4. A vehicle cabin air fresh air exchange system according to claim 2, characterized in that: The detection module further comprises an outside temperature detection unit (5), wherein the outside temperature detection unit (5) is used to detect the temperature outside the vehicle in real time; when the temperature difference between the inside of the vehicle and the outside of the vehicle is less than a third set value or the amount of gas exchange between the inside and outside of the vehicle reaches a fourth set value, the control module (3) reduces the operating speed of the air intake fan and the exhaust fan (21), and closes the air intake damper and the exhaust damper after a set time, and stops the air intake fan and the exhaust fan (21); or, the control module (3) reduces the operating speed of the air intake fan and the exhaust fan (21), and closes the air intake damper and the exhaust damper, and stops the air intake fan and the exhaust fan (21) when the temperature difference between the inside of the vehicle and the outside of the vehicle is less than a fifth set value or the amount of gas exchange between the inside and outside of the vehicle reaches a sixth set value; Alternatively, when the temperature difference between the interior of the vehicle and the exterior of the vehicle is less than a third set value or the amount of gas exchange between the interior and exterior of the vehicle reaches a fourth set value, the control module (3) closes the air inlet damper and the air exhaust damper and stops the air inlet fan and the exhaust fan (21).

5. The vehicle cabin air fresh air exchange system according to claim 2, characterized in that: The detection module further comprises an outside temperature detection unit (5), wherein the outside temperature detection unit (5) is used to detect the temperature outside the vehicle in real time; when the air conditioning and refrigeration system of the vehicle is started, if the temperature difference between the inside of the vehicle and the outside of the vehicle is less than a third set value, the control module (3) reduces the operating speed of the exhaust fan (21), closes the exhaust damper and stops the exhaust fan (21) after a set time, or, the control module (3) reduces the operating speed of the exhaust fan (21), and when the temperature difference between the inside of the vehicle and the outside of the vehicle is less than a fifth set value or the amount of gas exchange between the inside and outside of the vehicle reaches a sixth set value, the control module (3) closes the exhaust damper and stops the exhaust fan (21); Alternatively, when the air conditioning and refrigeration system of the vehicle is started, if the temperature difference between the interior of the vehicle and the exterior of the vehicle is less than a third set value, the control module (3) closes the exhaust damper and stops the exhaust fan (21).

6. A vehicle cabin air fresh air exchange system according to claim 2, characterized in that: When the vehicle switches from a start state to a stop state, the control module (3) closes the air inlet damper and the air outlet damper and stops the air inlet fan and the air outlet fan (21).

7. A vehicle cabin air fresh air exchange system according to claim 6, characterized in that: When the vehicle is in a stopped state and the fresh air exchange system is turned off, if the pollutant concentration inside the vehicle is greater than or equal to the second set value, the control module (3) opens the air inlet damper and the air exhaust damper and starts the air inlet fan and / or the exhaust fan (21).

8. A vehicle cabin air fresh air exchange system according to claim 7, characterized in that: The detection module further comprises an outside air detection unit (7), wherein the outside air detection unit (7) is used to detect the concentration of pollutants outside the vehicle in real time; when the concentration of pollutants outside the vehicle is greater than or equal to the second set value, the control module (3) closes the air inlet damper and the air exhaust damper and stops the air inlet fan and the exhaust fan (21).

9. The vehicle cabin air fresh air exchange system according to claim 3, characterized in that: The human body sensing unit (8) comprises one or more of a seat occupancy switch, a millimeter wave detection sensor, an infrared image detector and a capacitive human body sensor.

10. The vehicle cabin air fresh air exchange system according to claim 8, characterized in that: The in-vehicle air detection unit (6) and the out-vehicle air detection unit (7) both include one or more of an aldehyde gas sensor, a carbon dioxide sensor and an odor sensor.

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