Vehicle, vehicle air conditioning system and control method

Abstract

The present invention discloses a vehicle, a vehicle air-conditioning system and a control method. In the vehicle air-conditioning system, a connecting pipe is added to guide the gas in the second cabin to the upstream air intake area of ​​the temperature control module of the refrigerant circulation system, so that the gas flowing out of the second cabin can further flow through the temperature control module of the refrigerant circulation system to exchange heat with the refrigerant inside the temperature control module and enter the first cabin. Obviously, when the air-conditioning system is in the heating mode, the gas in the second cabin is the gas heated by the air-conditioning box, and its temperature must be higher than the external environment temperature. In this way, only a small amount of heat needs to be absorbed by the temperature control module to meet the use demand of the first cabin, and then part of the heat heated by the air-conditioning box can be used to achieve energy saving and high efficiency. Similarly, when the air-conditioning system is in the cooling mode, the temperature of the gas flowing out of the second cabin must be lower than the external gas temperature, and the cooling capacity of the air-conditioning box can also be further used to achieve the overall energy saving and high efficiency of the air-conditioning system.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a vehicle, a vehicle air-conditioning system and a control method. Background Art

[0002] At present, the automotive air conditioning technology has the problem that the performance of the front-end cooling module and the external heat exchanger is insufficient under certain working conditions, resulting in a decrease in air conditioning performance. For example, when the external ambient temperature is low, the external heat exchanger cannot absorb enough heat from the environment, resulting in insufficient heating performance in the passenger compartment. In extreme cases, such as the front-end heat exchanger frosts under heating conditions, causing the air conditioning system to fail to operate, and the heat pump system cannot work at all. In cooling conditions, when the passenger sets the air conditioning box to external circulation air intake, the cooling performance is often poor, and there is a problem of excessive condensation pressure in the air conditioning system.

[0003] How to overcome the above-mentioned defects of the prior art is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0004] The present invention provides a vehicle air conditioning system and a control method with relatively high working performance, and the present invention also provides a vehicle having the above air conditioning system and control method.

[0005] The present invention provides a vehicle air conditioning system, comprising a refrigerant circulation system and an air conditioning box, which are respectively used to control the temperature of a first cabin and a second cabin of a vehicle; the air conditioning box comprises an air inlet, an air outlet and a thermostat, the thermostat is used to adjust the temperature of the gas flowing into the air inlet of the air conditioning box, the air inlet of the air conditioning box can be selectively connected to the external environment or the inside of the second cabin, and the air outlet of the air conditioning box is connected to the second cabin;

[0006] The refrigerant circulation system at least includes a compressor and a temperature control module, which form a refrigerant circulation loop through a pipeline. The vehicle is provided with a first air inlet so that external air can flow through the temperature control module. When working, the air exchanges heat with the refrigerant inside the temperature control module and then enters the first cabin.

[0007] The vehicle air conditioning system further includes a communication pipe capable of directing at least part of the gas in the second compartment to the upstream air intake area of ​​the temperature control module; and a switch valve is provided on the communication pipe for connecting or disconnecting the communication pipe. .

[0008] The vehicle air-conditioning system provided by the present invention is additionally provided with a connecting pipe that guides the gas of the second cabin to the upstream air intake area of ​​the temperature control module of the refrigerant circulation system, so that the gas flowing out of the second cabin can further flow through the temperature control module of the refrigerant circulation system to exchange heat with the refrigerant inside the temperature control module and enter the first cabin. Obviously, the air-conditioning system is in heating mode (both the refrigerant circulation system and the air-conditioning box are in heating mode), and the gas in the second cabin is the gas heated by the air-conditioning box, and its temperature must be higher than the external ambient temperature. In this way, only a small amount of heat needs to be absorbed through the temperature control module to meet the use requirements of the first cabin, and then part of the heat heated by the air-conditioning box can be utilized to achieve energy saving and high efficiency; similarly, when the air-conditioning system is in cooling mode (both the refrigerant circulation system and the air-conditioning box are in cooling mode), the temperature of the gas flowing out of the second cabin must be lower than the external gas temperature. In this way, only a small amount of cold energy needs to be absorbed through the temperature control module to meet the use requirements of the first cabin, and the cold energy of the air-conditioning box can also be further utilized to achieve the overall energy saving and high efficiency of the air-conditioning system.

[0009] Optionally, the communication conduit is surrounded by structural members forming the vehicle;

[0010] Or the interior of the structural member forming the vehicle is a hollow structure to form the communicating duct;

[0011] Wherein, the structural parts of the vehicle include at least one of a door frame and an engine compartment longitudinal beam.

[0012] Optionally, at least one blower is further provided inside the communicating pipe to provide gas flow power.

[0013] Optionally, the vehicle air conditioning system can be configured to form at least one of the following modes:

[0014] Full recirculation mode: the first air inlet and the air outlet of the second cabin are in a closed state, the switch valve is connected to the connecting pipe, and the air inlet of the air conditioning box and the air outlet of the first cabin are in an open state;

[0015] Partial recirculation mode: the air outlet of the second cabin is in a closed state, the switch valve is connected to the connecting pipe, and the air inlet of the air conditioning box, the first air inlet and the air outlet of the first cabin are in an open state;

[0016] Independent circulation mode: the switch valve disconnects the connecting pipe, and the first air inlet, the air outlet of the first cabin, the air inlet of the air conditioning box and the air outlet of the second cabin are in an open state;

[0017] In the internal circulation mode, the air inlet of the air conditioning box and the air outlet of the second compartment are in a closed state, and the first air inlet and the air outlet of the first compartment are in an open state.

[0018] Optionally, it further includes an acquisition component and a controller, wherein the acquisition component is at least used to acquire operating parameters or external instructions of a refrigerant cycle system or an air conditioning box of the vehicle in a current state;

[0019] The controller places the vehicle air conditioning system in the full recirculation mode, the partial recirculation mode, the independent circulation mode or the internal circulation mode according to the acquired information and the pre-stored instruction module.

[0020] Optionally, the operating condition parameters include at least one or more of the outside temperature, the cooling condition and heating condition parameters of the air-conditioning system, and the operating condition of the air-conditioning box system; the operating condition of the air-conditioning system includes ventilation condition and ordinary cooling condition;

[0021] When the air conditioning system is in the heating mode and the outside temperature is lower than the first preset temperature stored in the pre-stored instruction module, the controller places the air conditioning system in the full recirculation mode;

[0022] When the air conditioning system is in the heating mode, the outside temperature is higher than the first preset temperature and lower than the second preset temperature stored in the pre-stored instruction module, the controller places the air conditioning system in the partial recirculation mode;

[0023] When the air conditioning system is in the heating mode and the outside temperature is higher than the second preset temperature stored in the pre-stored instruction module, the controller places the air conditioning system in the independent circulation mode;

[0024] When the temperature control module is in the defrosting state, the first air inlet of the temperature control module connected to the outside and the air outlet of the second compartment are closed, and the controller puts the air conditioning system into the full recirculation mode;

[0025] When the air-conditioning system is in cooling mode and the second cabin is ventilated, the controller places the air-conditioning system in a partial recirculation mode; otherwise, the controller at least places the air-conditioning system in an internal circulation mode.

[0026] Furthermore, the present invention provides a control method for a vehicle air conditioning system, wherein the vehicle air conditioning system includes a refrigerant circulation system and an air conditioning box, which are respectively used to control the temperature of a first cabin and a second cabin of the vehicle; the control method includes:

[0027] Obtaining the operating parameters or external instructions of the refrigerant cycle system or air conditioning box of the vehicle in the current state;

[0028] Based on the acquired information and the pre-stored instruction module, the second compartment and the air inlet area of ​​the temperature control module are selectively connected so that at least part of the gas inside the second compartment is directed to the air inlet area of ​​the temperature control module of the refrigerant circulation system.

[0029] Optionally, the operating condition parameters include at least one or more of the outside temperature, the cooling condition and heating condition parameters of the air-conditioning system, and the operating condition of the air-conditioning box system; the operating condition of the air-conditioning system includes a ventilation condition and a normal cooling condition; and the control method includes at least one of the following:

[0030] When the air conditioning system is in heating mode and the outside temperature is lower than the first preset temperature stored in the pre-stored instruction module, the air inlet area of ​​the temperature regulating module of the second compartment and the refrigerant circulation system is connected, the first air inlet of the temperature regulating module connected to the outside and the air outlet of the second compartment are closed, and the air inlet of the air conditioning box and the air outlet of the first compartment are opened;

[0031] When the air conditioning system is in heating mode and the outside temperature is lower than the second preset temperature stored in the pre-stored instruction module, the air inlet area of ​​the temperature regulating module connected to the second compartment and the refrigerant circulation system is closed, and the first air inlet connected to the temperature regulating module and the outside, the air inlet of the air conditioning box and the air outlet of the first compartment are opened;

[0032] When the temperature control module is in the defrosting state, the first air inlet of the temperature control module connected to the outside and the air outlet of the second compartment are closed, the second compartment where the air conditioner is located and the air inlet area of ​​the temperature control module of the refrigerant circulation system are connected, and the air inlet of the air conditioner and the air outlet of the first compartment are opened;

[0033] Wherein, the second preset temperature is higher than the first preset temperature;

[0034] When the air-conditioning system is in a refrigeration condition and the second cabin is ventilated, the air inlet area of ​​the temperature control module connected to the second cabin and the refrigerant circulation system is closed, the air outlet of the second cabin is closed, and the first air inlet connecting the temperature control module to the outside, the air inlet of the air-conditioning box and the air outlet of the first cabin are opened; otherwise, the air outlet and air inlet of the second cabin are closed, the passage between the second cabin and the air inlet area of ​​the temperature control module is closed, and the first air inlet and the air outlet of the first cabin are opened.

[0035] In addition, the present invention provides a vehicle, comprising a first cabin, a second cabin and an air-conditioning system, wherein the air-conditioning system is any one of the vehicle air-conditioning systems described above.

[0036] Optionally, the first cabin is a cockpit, the second cabin is a passenger cabin, and the temperature control module is placed at the front end of the cockpit.

[0037] The control method in the present invention is implemented based on the above-mentioned vehicle air-conditioning system, and the above-mentioned vehicle includes the above-mentioned vehicle air-conditioning system, so the control method and the vehicle air-conditioning system in the present invention both have the above-mentioned technical effects of the vehicle air-conditioning system. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a structural schematic diagram of a vehicle air conditioning system installed in a first cabin and a second cabin in one embodiment of the present invention;

[0039] Figure 2-1 A schematic diagram of the second compartment of the vehicle air conditioning system in the present invention operating in an internal circulation mode;

[0040] Figure 2-2 A schematic diagram of another direction in which the second cabin is operating in the internal circulation mode;

[0041] Figure 3-1 A schematic diagram of a vehicle air conditioning system in the present invention operating in an independent circulation mode;

[0042] Figure 3-2 A schematic diagram of another direction in which the vehicle air conditioning system of the present invention works in an independent circulation mode;

[0043] Figure 4 A schematic diagram of a vehicle air conditioning system of the present invention operating in a partial recirculation mode;

[0044] Figure 5 It is a schematic diagram of the vehicle air conditioning system of the present invention working in the full recirculation mode.

[0045] in, Figures 1 to 5 middle:

[0046] 1-connecting channel; 2-blower; 3-first one-way valve; 4-second one-way valve; 5-first air inlet; 100-refrigeration circulation system; 101-temperature control module; 200-air conditioning box; 300-first cabin; 400-second cabin. DETAILED DESCRIPTION

[0047] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0048] Please refer to Figures 1 to 5 , Figure 1 It is a structural schematic diagram of a vehicle air conditioning system installed in a first cabin and a second cabin in one embodiment of the present invention; Figure 2-1 A schematic diagram of the second compartment of the vehicle air conditioning system in the present invention operating in an internal circulation mode; Figure 2-2 A schematic diagram of another direction in which the second cabin is operating in the internal circulation mode; Figure 3-1 A schematic diagram of a vehicle air conditioning system in the present invention operating in an independent circulation mode; Figure 3-2 A schematic diagram of another direction in which the vehicle air conditioning system of the present invention works in an independent circulation mode; Figure 4 A schematic diagram of a vehicle air conditioning system of the present invention operating in a partial recirculation mode; Figure 5 It is a schematic diagram of the vehicle air conditioning system of the present invention working in the full recirculation mode.

[0049] The present invention provides a vehicle air-conditioning system, which is mainly used in a vehicle. Generally, the vehicle includes at least two cabins: a first cabin 300 and a second cabin 400. This article takes the first cabin 300 as a cockpit and the second cabin 400 as a passenger cabin as an example to introduce the technical scheme and technical effect. Of course, those skilled in the art can understand that the first cabin 300 and the second cabin 400 in this article are not limited to the cockpit and the passenger cabin, and of course they can also be cabins for other purposes.

[0050] The vehicle air conditioning system includes a refrigerant circulation system 100 and an air conditioning box 200, wherein the refrigerant circulation system 100 is used to adjust the temperature inside the first cabin 300, and the air conditioning box 200 is used to adjust the temperature inside the second cabin 400. The structures of the refrigerant circulation system 100 and the air conditioning box 200 can be the same as those used in the current vehicle, and of course they can also be different. The refrigerant circulation system 100 at least includes a compressor and a temperature control module 101 that can form a refrigerant circulation loop, wherein the temperature control module 101 is used to exchange heat between gas and refrigerant flowing through it, and the gas after heat exchange enters the first cabin 300. Of course, the refrigerant circulation system 100 can further include components such as a throttling element, a liquid reservoir or a filter.

[0051] The air conditioning box 200 includes an air inlet, an air outlet and a thermostat. The thermostat is mainly used to adjust the temperature of the air entering the air conditioning box 200, and the air after adjusting the temperature enters the second cabin 400. The thermostat also has heating and cooling capabilities. Its heating capacity can be derived from electrical energy or engine hot water, and its cooling capacity can be provided by an external cold source or refrigerant, etc., which will not be described in detail herein.

[0052] The air inlet of the air conditioning box 200 in the present invention can be selectively connected to the external environment or the interior of the second cabin 400. When the air inlet of the air conditioning box 200 is connected to the interior of the second cabin 400, the internal circulation of the gas inside the second cabin 400 can be realized without introducing external gas to meet the air conditioning working condition requirements. Of course, when the second cabin 400 needs to be ventilated, the air inlet of the air conditioning box 200 can be connected to the external environment. The air outlet of the air conditioning box 200 is connected to the second cabin 400, so that the gas after heat exchange enters the interior of the second cabin 400, improving the internal environment of the second cabin 400.

[0053] The vehicle air conditioning system provided by the present invention also includes a connecting pipe, which can guide at least part of the gas in the second compartment 400 to the upstream air intake area of ​​the temperature control module 101, and a switch valve is provided on the connecting pipe for connecting or disconnecting the connecting pipe. The switch valve can be an automatic control mode, such as an electric control valve or a hydraulic control valve, and of course, the use of a manual valve is not excluded. The number of the switch valves can be one, two, or more.

[0054] The vehicle air-conditioning system provided by the present invention is additionally provided with a connecting pipe to guide the gas in the second cabin 400 to the upstream air intake area of ​​the temperature regulating module 101 of the refrigerant circulation system 100, so that the gas flowing out of the second cabin 400 can further flow through the temperature regulating module 101 of the refrigerant circulation system 100 to exchange heat with the refrigerant inside the temperature regulating module 101, and enter the first cabin 300. Obviously, the air-conditioning system is in the heating mode (the refrigerant circulation system 100 and the air-conditioning box 200 are both in the heating mode), and the gas in the second cabin 400 is the gas heated by the air-conditioning box 200, and its temperature must be higher than that of the first cabin 300. In this way, the use demand of the first cabin 300 can be met by absorbing a small amount of heat through the temperature control module 101, and part of the heat heated by the air-conditioning box 200 can be used to achieve energy saving and high efficiency; similarly, when the air-conditioning system is in cooling mode (the refrigerant circulation system 100 and the air-conditioning box 200 are both in cooling mode), the temperature of the gas flowing out of the second cabin 400 is bound to be lower than the external air temperature, so that the use demand of the first cabin 300 can be met by absorbing a small amount of cold energy through the temperature control module 101, and the cold energy of the air-conditioning box 200 can be further used to achieve the overall energy saving and high efficiency of the air-conditioning system.

[0055] In the above-mentioned embodiments, the connecting pipe connecting the second compartment 400 and the air intake area of ​​the temperature control module 101 can be surrounded by the structural parts forming the vehicle. Of course, the interior of the structural parts forming the vehicle is a hollow structure to form the connecting pipe. The structural parts forming the vehicle can be selected according to the positions of the first compartment 300 and the second compartment 400 and the installation positions of the refrigerant circulation system 100 and the air conditioning box 200. For example, the first compartment 300 is the engine compartment and the second compartment 400 is the passenger compartment. The structural parts of the vehicle can include one or more of the door frame, the engine compartment longitudinal beam and other components.

[0056] The gas flow duct is formed by the vehicle's own structural parts, which can reduce the weight of the vehicle to the greatest extent, meet the vehicle's lightweight design, and maximize vehicle performance.

[0057] Of course, the above-mentioned connecting pipes can also be provided with components separately to improve the flexibility of use.

[0058] In order to improve the efficiency of the air conditioning system, at least one blower 2 is further arranged inside the communication pipe to provide gas flow power. Under the action of the blower 2, the flow speed of the gas inside the communication pipe can be accelerated.

[0059] Based on the above-mentioned air-conditioning system, this article also provides several working modes of the air-conditioning system, mainly including: partial recirculation mode, full recirculation mode, independent circulation mode, and internal circulation mode. These modes can be reasonably selected according to different needs of the vehicle.

[0060] Specifically, Figure 5 As shown, the full recirculation mode is: the first air inlet and the air outlet of the second compartment 400 are in a closed state, the switch valve is connected to the connecting pipe, and the air inlet of the air conditioning box 200 and the air outlet of the first compartment 300 are in an open state. That is, the outside air enters the air conditioning box 200 from the air inlet of the air conditioning box 200, exchanges heat with the thermostat, and then flows into the second compartment 400. Part of the gas in the second compartment 400 enters the air inlet area of ​​the thermostat module 101 of the refrigerant circulation system 100 under the action of the blower 2, and enters the first compartment 300 through the heat exchange of the thermostat module 101 again. The gas in the first compartment 300 can be discharged through the air outlet of the first compartment 300.

[0061] At this time, the gas circuits of the second compartment 400 and the first compartment 300 are connected in series.

[0062] like Figure 4 As shown, the partial recirculation mode is: the air outlet of the second cabin 400 is in a closed state, the switch valve is connected to the connecting pipe, and the air inlet of the air-conditioning box 200, the first air inlet and the air outlet of the first cabin 300 are in an open state; different from the full recirculation mode, in the partial recirculation mode, the first air inlet connecting the temperature control module 101 with the outside world is also in an open state, and the gas that exchanges heat with the temperature control module 101 includes not only the gas flowing from the second cabin 400, but also the gas from the outside world.

[0063] As shown in Figure 3, the independent circulation mode is: the switch valve disconnects the connecting pipe, and the first air inlet, the air outlet of the first cabin 300, the air inlet of the air-conditioning box 200 and the air outlet of the second cabin 400 are in an open state; that is, the connecting pipe is closed at this time, and the air-conditioning box 200 and the refrigeration and circulation system work independently of each other.

[0064] like Figure 2-1 and Figure 2-2 As shown, in the internal circulation mode, the air inlet of the air conditioning box 200 and the air outlet of the second compartment 400 are in a closed state, and the first air inlet and the air outlet of the first compartment 300 are in an open state; in this mode, the gas inside the second compartment 400 is in the internal circulation mode, and the refrigerant circulation system 100 also works independently. This mode is suitable for refrigeration conditions.

[0065] The operation of the above working conditions can be determined according to actual needs. For example, for the heating working condition, it can be configured into partial recirculation mode, full recirculation mode, and independent circulation mode. For example, when the outside temperature is lower than the first preset temperature, the full recirculation mode can be adopted; when the outside temperature is higher than the first preset temperature and lower than the second preset temperature, the partial recirculation mode can be adopted; when the outside temperature is higher than the second preset temperature, the air conditioning system can adopt the independent circulation mode.

[0066] Of course, when the temperature control module 101 is in the defrosting state, the first air inlet of the temperature control module 101 connected to the outside and the air outlet of the second compartment 400 are closed, and the controller puts the air conditioning system into the full recirculation mode.

[0067] When the air-conditioning system is in cooling mode, the second cabin 400 can operate in the internal circulation mode. Usually, the partial recirculation mode only needs to be turned on when the second cabin 400 is ventilated.

[0068] The above embodiments provide a control method using the outside temperature as a judgment condition. Of course, the selection of the air-conditioning operation mode is not limited to the above outside temperature as a judgment condition, but can also be based on the operating parameters or external instructions of the current state of the vehicle's refrigerant cycle system 100 or the air-conditioning box 200.

[0069] In the above embodiments, the air inlet or outlet that needs to be opened or closed can be provided with a one-way valve to control the opening and closing. The accompanying drawings herein show a specific implementation method in which a first one-way valve 3 and a second one-way valve 4 are respectively provided at the air outlet of the second cabin 400 and the connecting channel 1 near the temperature control module 101.

[0070] In a specific embodiment, it also includes an acquisition component and a controller, and the acquisition component is at least used to acquire the operating parameters or external instructions of the refrigerant cycle system 100 or the air conditioning box 200 of the vehicle in the current state. The operating parameters include at least one or more of the outside temperature, the cooling and heating operating parameters of the air conditioning system, and the operating conditions of the air conditioning box 200 system; the operating conditions of the air conditioning system include ventilation conditions and ordinary cooling conditions. The acquisition component can be a temperature sensor or a component that directly reads data from the vehicle control unit or an external command input component, such as a touch screen, etc.

[0071] The controller places the vehicle air conditioning system in a full recirculation mode, a partial recirculation mode, the independent circulation mode or the internal circulation mode according to the acquired information and the pre-stored instruction module.

[0072] Based on the above control system, this article also provides a control method for a vehicle air conditioning system. The vehicle air conditioning system may be the air conditioning system described in any of the above embodiments. The control method may specifically include:

[0073] S1, obtaining the operating parameters or external instructions of the refrigerant cycle system 100 or the air conditioning box 200 of the vehicle in the current state;

[0074] S2. Based on the acquired information and the pre-stored instruction module, the second compartment 400 and the air inlet area of ​​the temperature control module 101 are selectively connected so that at least part of the gas inside the second compartment 400 is diverted to the air inlet area of ​​the temperature control module 101 of the refrigerant cycle system 100.

[0075] The above working condition parameters in the control method are the same as above. The working conditions of the air-conditioning system include ventilation conditions and ordinary refrigeration conditions. The control method includes at least one of the following:

[0076] When the air conditioning system is in heating mode and the outside temperature is lower than the first preset temperature stored in the pre-stored instruction module, the air inlet area of ​​the second compartment 400 and the temperature regulating module 101 of the refrigerant cycle system 100 are connected, the first air inlet of the temperature regulating module 101 connected to the outside and the air outlet of the second compartment 400 are closed, and the air inlet of the air conditioning box 200 and the air outlet of the first compartment 300 are opened;

[0077] When the air conditioning system is in heating mode and the outside temperature is lower than the second preset temperature stored in the pre-stored instruction module, the air inlet area of ​​the temperature regulating module 101 of the second compartment 400 and the refrigerant cycle system 100 is connected, the air outlet of the second compartment 400 is closed, and the first air inlet of the temperature regulating module 101 connected to the outside, the air inlet of the air conditioning box 200 and the air outlet of the first compartment 300 are opened;

[0078] When the temperature control module 101 is in the defrosting state, the first air inlet of the temperature control module 101 connected to the outside and the air outlet of the second compartment 400 are closed, the second compartment 400 where the air conditioner 200 is located and the air inlet area of ​​the temperature control module 101 of the refrigerant circulation system 100 are connected, and the air inlet of the air conditioner 200 and the air outlet of the first compartment 300 are opened;

[0079] Wherein, the second preset temperature is higher than the first preset temperature;

[0080] When the air-conditioning system is in a cooling condition and the second cabin 400 is ventilated, the air inlet area of ​​the temperature control module 101 of the second cabin 400 and the refrigerant circulation system 100 is connected, the air outlet of the second cabin 400 is closed, and the first air inlet connecting the temperature control module 101 with the outside, the air inlet of the air conditioning box 200 and the air outlet of the first cabin 300 are opened; otherwise, the air outlet and air inlet of the second cabin 400 are closed, the passage between the second cabin 400 and the air inlet area of ​​the temperature control module 101 is closed, and the first air inlet and the air outlet of the first cabin 300 are opened.

[0081] Finally, the present invention also provides a vehicle, including a first cabin 300, a second cabin 400 and an air-conditioning system, and the air-conditioning system is the vehicle air-conditioning system described in any of the above embodiments.

[0082] For other vehicle structures, please refer to current technology and will not be elaborated in this article.

[0083] The control method in the present invention is implemented based on the above-mentioned vehicle air-conditioning system, and the above-mentioned vehicle includes the above-mentioned vehicle air-conditioning system, so the control method and the vehicle air-conditioning system in the present invention both have the above-mentioned technical effects of the vehicle air-conditioning system.

[0084] The above is a detailed introduction to a vehicle, a vehicle air conditioning system and a control method provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A vehicle air conditioning system, characterized in that: The invention comprises a refrigerant circulation system and an air conditioning box, which are respectively used to control the temperature of a first cabin and a second cabin of a vehicle; the air conditioning box comprises an air inlet, an air outlet and a thermostat, the thermostat is used to adjust the temperature of the gas flowing into the air inlet of the air conditioning box, the air inlet of the air conditioning box can be selectively connected to the external environment or the inside of the second cabin, and the air outlet of the air conditioning box is connected to the second cabin; The refrigerant circulation system at least includes a compressor and a temperature control module, which form a refrigerant circulation loop through a pipeline. The vehicle is provided with a first air inlet so that external air can flow through the temperature control module. When working, the air exchanges heat with the refrigerant inside the temperature control module and then enters the first cabin. The vehicle air conditioning system further includes a communication pipe capable of directing at least part of the gas in the second compartment to the upstream air intake area of ​​the temperature control module; and a switch valve is provided on the communication pipe for connecting or disconnecting the communication pipe; It also includes an acquisition component and a controller, wherein the acquisition component is at least used to acquire operating parameters or external instructions of a refrigerant cycle system or an air conditioning box of a vehicle in a current state; The controller places the vehicle air conditioning system in a full recirculation mode, a partial recirculation mode, an independent circulation mode, or an internal circulation mode according to the acquired information and the pre-stored instruction module; The operating parameters include at least one or more of the outside temperature, the cooling and heating operating parameters of the air conditioning system, and the operating conditions of the air conditioning system; the operating conditions of the air conditioning system include ventilation conditions and ordinary cooling conditions; When the air conditioning system is in a heating mode and the outside temperature is lower than a first preset temperature stored in the pre-stored instruction module, the controller places the air conditioning system in a full recirculation mode; When the air conditioning system is in heating mode, the controller places the air conditioning system in partial recirculation mode when the outside temperature is higher than the first preset temperature and lower than the second preset temperature stored in the pre-stored instruction module; When the air conditioning system is in a heating mode and the outside temperature is higher than a second preset temperature stored in the pre-stored instruction module, the controller places the air conditioning system in an independent circulation mode; When the temperature control module is in the defrosting state, the first air inlet of the temperature control module connected to the outside and the air outlet of the second compartment are closed, and the controller puts the air conditioning system into a full recirculation mode; When the air-conditioning system is in cooling mode and the second cabin is ventilated, the controller places the air-conditioning system in a partial recirculation mode; otherwise, the controller at least places the air-conditioning system in an internal circulation mode.

2. The vehicle air conditioning system according to claim 1, characterized in that: The communication duct is surrounded by structural members forming the vehicle; Or the interior of the structural member forming the vehicle is a hollow structure to form the communicating duct; Wherein, the structural parts of the vehicle include at least one of a door frame and an engine compartment longitudinal beam.

3. The vehicle air conditioning system according to claim 1, characterized in that: At least one blower is also arranged inside the communicating pipe to provide gas flow power.

4. The vehicle air conditioning system according to any one of claims 1 to 3, characterized in that: The vehicle air conditioning system is configurable to form at least one of the following modes: Full recirculation mode: the first air inlet and the air outlet of the second cabin are in a closed state, the switch valve is connected to the connecting pipe, and the air inlet of the air conditioning box and the air outlet of the first cabin are in an open state; Partial recirculation mode: the air outlet of the second cabin is in a closed state, the switch valve is connected to the connecting pipe, and the air inlet of the air conditioning box, the first air inlet and the air outlet of the first cabin are in an open state; Independent circulation mode: the switch valve disconnects the connecting pipe, and the first air inlet, the air outlet of the first cabin, the air inlet of the air conditioning box and the air outlet of the second cabin are in an open state; In the internal circulation mode, the air inlet of the air conditioning box and the air outlet of the second compartment are in a closed state, and the first air inlet and the air outlet of the first compartment are in an open state.

5. A method for controlling a vehicle air conditioning system, characterized in that: The vehicle air conditioning system includes a refrigerant circulation system and an air conditioning box, which are respectively used to control the temperature of the first cabin and the second cabin of the vehicle; the control method includes: Obtaining the operating parameters or external instructions of the refrigerant cycle system or air conditioning box of the vehicle in the current state; According to the acquired information and the pre-stored instruction module, the second compartment and the air inlet area of ​​the temperature adjustment module are selectively connected so that at least part of the gas inside the second compartment is guided to the air inlet area of ​​the temperature adjustment module of the refrigerant circulation system; The operating parameters include at least one or more of the outside temperature, the cooling and heating operating parameters of the air conditioning system, and the operating conditions of the air conditioning system; the operating conditions of the air conditioning system include ventilation conditions and ordinary cooling conditions; the control method includes at least one of the following: When the air conditioning system is in heating mode and the outside temperature is lower than the first preset temperature stored in the pre-stored instruction module, the air inlet area of ​​the temperature regulating module of the second compartment and the refrigerant circulation system is connected, the first air inlet of the temperature regulating module connected to the outside and the air outlet of the second compartment are closed, and the air inlet of the air conditioning box and the air outlet of the first compartment are opened; When the air conditioning system is in heating mode and the outside temperature is lower than the second preset temperature stored in the pre-stored instruction module, the air inlet area of ​​the temperature regulating module connected to the second compartment and the refrigerant circulation system is closed, and the first air inlet connected to the temperature regulating module and the outside, the air inlet of the air conditioning box and the air outlet of the first compartment are opened; When the temperature control module is in the defrosting state, the first air inlet of the temperature control module connected to the outside and the air outlet of the second compartment are closed, the second compartment where the air conditioner is located and the air inlet area of ​​the temperature control module of the refrigerant circulation system are connected, and the air inlet of the air conditioner and the air outlet of the first compartment are opened; Wherein, the second preset temperature is higher than the first preset temperature; When the air-conditioning system is in a refrigeration condition and the second cabin is ventilated, the air inlet area of ​​the temperature control module connected to the second cabin and the refrigerant circulation system is closed, the air outlet of the second cabin is closed, and the first air inlet connecting the temperature control module to the outside, the air inlet of the air-conditioning box and the air outlet of the first cabin are opened; otherwise, the air outlet and air inlet of the second cabin are closed, the passage between the second cabin and the air inlet area of ​​the temperature control module is closed, and the first air inlet and the air outlet of the first cabin are opened.

6. A vehicle comprising a first cabin, a second cabin and an air conditioning system, characterized in that: The air conditioning system is the vehicle air conditioning system according to any one of claims 1 to 4.

7. The vehicle according to claim 6, characterized in that The first cabin is a cockpit, the second cabin is a passenger cabin, and the temperature control module is placed at the front end of the cockpit.

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