Vehicle refrigeration system, refrigerant leakage coping method and vehicle

Abstract

The invention provides a vehicle refrigerating system, a refrigerant leakage coping method and a vehicle, the vehicle refrigerating system comprises a shell, a refrigerating module and a leakproof module, the shell is provided with an inner cavity, the refrigerating module is arranged in the inner cavity, the shell can isolate leaked refrigerants, the refrigerants are difficult to leak into a cabin or a passenger compartment outside the shell, and the leakproof module is arranged in the shell. The anti-leakage module comprises a leakage detection device, an exhaust channel and an exhaust fan, the leakage detection device is connected to the shell and used for detecting the refrigerant leakage amount of the refrigeration module, the exhaust channel communicates with the shell, the exhaust fan is arranged in the exhaust channel or the inner cavity, and a switch valve is arranged at an outlet of the exhaust channel and used for closing or opening the exhaust channel. The exhaust fan can exhaust refrigerant leaked in the shell to the outside of the vehicle through the exhaust channel, so that the leaked refrigerant is discharged, and the safety of passengers can be guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a vehicle refrigeration system, a method for dealing with refrigerant leakage, and a vehicle. Background Art

[0002] At present, R290 is widely used as a refrigerant in vehicle refrigeration systems. Since R290 is flammable, when R290 leaks, it poses a great safety hazard to passengers. Summary of the invention

[0003] The present invention provides a vehicle refrigeration system, a refrigerant leakage response method and a vehicle, which can detect the leakage of refrigerant in time and discharge the leaked refrigerant in time to ensure the safety of passengers.

[0004] A vehicle refrigeration system according to a first embodiment of the present invention comprises: A housing having an inner cavity; A refrigeration module is disposed in the inner cavity; The anti-leakage module includes a leakage detection device, an exhaust channel and an exhaust fan, wherein the leakage detection device is connected to the shell and is used to detect the refrigerant leakage of the refrigeration module, the exhaust channel is communicated with the shell, the exhaust fan is arranged in the exhaust channel or the inner cavity, and the exhaust channel is provided with a switch valve, and the switch valve is used to close or open the exhaust channel.

[0005] The vehicle refrigeration system according to the embodiment of the present invention has at least the following beneficial effects: The embodiment of the present invention arranges the refrigeration module in the inner cavity of the shell. When the refrigerant leaks, the shell can isolate the leaked refrigerant, making it difficult for the refrigerant to leak into the engine compartment or passenger compartment outside the shell. At the same time, the switch valve is opened to conduct the exhaust passage, and the exhaust fan is started. The exhaust fan can discharge the leaked refrigerant in the shell through the exhaust passage to the outside of the vehicle, thereby discharging the leaked refrigerant and ensuring the safety of the passengers.

[0006] A refrigerant leakage response method according to a second aspect of the present invention is applied to a vehicle, wherein the vehicle includes a vehicle refrigeration system according to the first aspect of the present invention. The refrigerant leakage response method includes: Obtaining the refrigerant leakage amount and the accumulated time, and establishing a relationship function between the refrigerant leakage amount and the accumulated time, and determining that the derivative of the relationship function at the current moment is the instantaneous change rate of the refrigerant leakage amount; When the refrigerant leakage amount is greater than a first threshold and the instantaneous change rate is less than or equal to a second threshold, controlling the vehicle to enter a normal leakage mode; When the refrigerant leakage amount is greater than the first threshold and the instantaneous change rate is greater than the second threshold, controlling the vehicle to enter an emergency leakage mode; When the vehicle is in the normal leakage mode, a first control strategy is executed, the first control strategy comprising: controlling the switch valve to open and controlling the exhaust fan to operate at a first speed; When the vehicle is in the emergency leakage mode, the switch valve is controlled to open and the exhaust fan is controlled to operate at a second speed, and the vehicle is controlled to decelerate and stop, and the second speed is greater than the first speed.

[0007] The refrigerant leakage response method according to the embodiment of the present invention has at least the following beneficial effects: The embodiment of the present invention first determines the leakage condition of the refrigerant according to the leakage amount of the refrigerant and its instantaneous change rate. When the leakage condition is relatively light, the vehicle is controlled to enter the normal leakage mode. When the leakage condition is relatively serious, the vehicle is controlled to enter the emergency leakage mode. The judgment result is relatively accurate, which is conducive to making a correct control strategy. In the normal leakage mode, the first control strategy is executed, and in the emergency leakage mode, the second control strategy is executed. Different leakage conditions can be flexibly responded to, wherein the first control strategy includes opening the switch valve and controlling the exhaust fan to operate at a first speed, and the refrigeration module maintains normal operation. The second control strategy includes controlling the switch valve to open and controlling the exhaust fan to operate at a second speed; controlling the vehicle to slow down and stop. The second speed is greater than the first speed. In order to ensure that the leaked refrigerant is discharged in the shortest time, the speed of the exhaust fan is relatively high. Since the refrigeration leakage is relatively serious, there is a great risk for the vehicle to continue to drive. At this time, the vehicle is automatically controlled to slow down and stop, which can ensure the safety of passengers.

[0008] According to some embodiments of the present invention, the refrigeration module includes an evaporator, the vehicle refrigeration system includes an air outlet module and a heat exchanger, the air outlet module includes an air outlet fan and an air outlet channel, the air outlet channel is connected to the passenger compartment of the vehicle, the air outlet fan is arranged in the air outlet channel, the air outlet channel exchanges heat with the evaporator through the heat exchanger, and the second control strategy further includes: When the vehicle is in the emergency leakage mode, the air outlet fan is controlled to be closed, and the windows of the vehicle are controlled to be closed.

[0009] According to some embodiments of the present invention, the vehicle includes a collision detection device, the collision detection device is used to detect whether the vehicle is in a collision state, and the refrigerant leakage response method further includes: When the refrigerant leakage amount is greater than a first threshold and a collision signal from the collision detection device is received, the vehicle is controlled to enter the emergency leakage mode.

[0010] According to some embodiments of the present invention, the refrigerant leakage response method further includes: when the vehicle is in the normal leakage mode or the emergency leakage mode, controlling the refrigeration module to stop working, and controlling the vehicle to send an alarm signal.

[0011] According to some embodiments of the present invention, the vehicle includes a main power supply and a backup power supply, and the refrigerant leakage response method further includes: Obtaining the operating status of the main power supply; When the main power supply is in a fault state, the backup power supply is controlled to supply power to the anti-leakage module.

[0012] A vehicle according to an embodiment of a third aspect of the present invention comprises the vehicle refrigeration system of the embodiment of the first aspect.

[0013] The vehicle according to the embodiment of the present invention comprises the vehicle refrigeration system of the first aspect embodiment and therefore has at least the above-mentioned beneficial effects, which will not be described in detail here.

[0014] According to an embodiment of the fourth aspect of the present invention, the electronic device includes: at least one processor; at least one memory for storing at least one program; when the at least one program is executed by the at least one processor, the at least one processor implements the refrigerant leakage response method as described in the embodiment of the second aspect.

[0015] The electronic device according to the embodiment of the present invention has at least the above-mentioned beneficial effects, as its processor implements the refrigerant leakage response method of the above-mentioned embodiment, which will not be described in detail here.

[0016] According to a computer-readable storage medium of an embodiment of the fifth aspect of the present invention, processor-executable instructions are stored therein, and when the processor-executable instructions are executed by the processor, they are used to execute the refrigerant leakage response method of the embodiment of the second aspect.

[0017] A computer program product according to an embodiment of the sixth aspect of the present invention includes a computer program, and when the computer program is executed by a processor, the refrigerant leakage response method of the embodiment of the second aspect is implemented.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 A schematic diagram of a module of a vehicle refrigeration system according to some embodiments of the present invention; Figure 2A schematic diagram of a vehicle refrigeration system according to some embodiments of the present invention; Figure 3 A flowchart of the steps of the refrigerant leakage response method according to some embodiments of the present invention; Figure 4 A flowchart of the steps of the refrigerant leakage response method according to some embodiments of the present invention; Figure 5 A flowchart of the steps of the refrigerant leakage response method according to some embodiments of the present invention; Figure 6 It is a schematic diagram of the hardware structure of an electronic device according to some embodiments of the present invention.

[0020] Reference numerals: Housing 100; Refrigeration module 200, compressor 210, evaporator 220, condenser 230, expansion valve 240; Anti-leakage module 300, exhaust channel 310, switch valve 311, exhaust fan 320, leakage detection device 330; Air outlet module 400, air outlet channel 410, air outlet fan 420; Heat exchanger 500. DETAILED DESCRIPTION

[0021] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0022] Reference Figure 1 and Figure 2 As shown, a vehicle refrigeration system provided by an embodiment of the present invention includes a housing 100, a refrigeration module 200 and an anti-leakage module 300. The housing 100 is provided with an inner cavity, and the refrigeration module 200 is arranged in the inner cavity of the housing 100. The refrigeration module 200 includes components such as a compressor 210, an evaporator 220, a condenser 230 and an expansion valve 240. These components are integrated into one module, so that the overall size of the module is small, and there is no long refrigerant pipe connected in the middle. This highly integrated solution on the refrigerant side can control the charge amount of R290 refrigerant to about 100~160g, while the charge amount of the traditional refrigeration system solution is about 500g, which can greatly reduce the charge amount, and has the advantages of reducing weight, reducing costs, and improving safety.

[0023] In some embodiments, the shell 100 can be made of aluminum alloy or stainless steel, so that the structural strength of the shell 100 is relatively large and more corrosion-resistant, and the inner cavity is a closed cavity. When the refrigerant leaks in the refrigeration module 200, the shell 100 can seal the leaked refrigerant, making it difficult for the refrigerant to leak into the cabin outside the shell 100, thereby achieving a leakage prevention effect. In addition, the inner cavity is isolated from the passenger compartment, making it difficult for the refrigerant to leak into the passenger compartment, thereby ensuring the safety of the passengers.

[0024] The refrigeration module 200 can be understood as an R290 integrated module, which is highly integrated, easy to repair and disassemble, and friendly to after-sales. This embodiment can detect leakage conditions in real time and actively control exhaust, which can effectively prevent R290 from accumulating to a dangerous concentration, greatly reducing the risk of fire. In addition, it also ensures the air quality in the car, protects passengers from harmful gases, and improves riding comfort and safety.

[0025] Reference Figure 1 and Figure 3 As shown, the anti-leakage module 300 includes a leakage detection device 330, an exhaust channel 310 and an exhaust fan 320. The leakage detection device 330 is connected to the housing 100. The leakage detection device 330 is used to detect or monitor the refrigerant leakage of the refrigeration module 200. The leakage detection device 330 is provided with high-precision gas sensors inside. These gas sensors are based on semiconductor or electrochemical principles and can monitor the refrigerant concentration in the environment in real time. The response speed is fast and the sensitivity is high. The exhaust channel 310 is connected to the housing 100. The exhaust fan 320 is arranged in the exhaust channel 310 or the inner cavity of the housing 100. When the exhaust fan 320 rotates, the air in the inner cavity can be drawn out of the housing 100 through the exhaust channel 310. The exhaust channel 310 is provided with a switch valve 311. The switch valve 311 is used to close or conduct the exhaust channel 310. In the natural state, the switch valve 311 is closed, the exhaust passage 310 is sealed, the housing 100 is not connected to the outside, and the exhaust fan 320 does not work; when the refrigerant leaks, the switch valve 311 is opened, thereby opening the exhaust passage 310, the housing 100 is connected to the outside, and the exhaust fan 320 is started, thereby discharging the refrigerant in the housing 100. The leakage detection device 330 can monitor the refrigerant concentration in the housing 100 at any time. Considering the safety of the whole vehicle, a safety value needs to be preset. If the refrigerant leakage detected by the leakage detection device 330 reaches the safety value, control intervention is performed to prevent accidents.

[0026] In some embodiments, the housing 100 is provided with a leakage detection interface communicating with the inner cavity, and the leakage detection device 330 is connected to the leakage detection interface. In other embodiments, the leakage detection device 330 can be arranged at a key connection part or a possible leakage point of the housing 100, such as near a joint or a valve.

[0027] In some embodiments, the exhaust fan 320 uses a brushless DC motor to drive the blades to rotate, and has the characteristics of low noise and high wind pressure, ensuring that sufficient wind can be generated even at low speeds. The exhaust duct 310 extends to the outside of the vehicle, and a rainproof or dustproof structure can be designed at the outlet of the exhaust duct 310 to avoid the outlet from being blocked, ensuring that the refrigerant is safely discharged without affecting the interior environment of the vehicle. An exhaust cover is provided at the outlet of the exhaust duct 310, and the switch valve 311 can be arranged near the exhaust cover. The exhaust cover is provided with a filter hole or a filter screen and other structures to filter dust or dirt.

[0028] Reference Figure 3 As shown, a refrigerant leakage response method is provided in an embodiment of the present invention. The refrigerant leakage response method is applied to a vehicle. The vehicle includes the vehicle refrigeration system of the above embodiment. The refrigerant leakage response method includes step S100, step S200, step S300, step S400 and step S500.

[0029] Step S100: Obtain the refrigerant leakage amount and the accumulated time, establish a relationship function between the refrigerant leakage amount and the accumulated time, and determine that the derivative of the relationship function at the current moment is the instantaneous change rate of the refrigerant leakage amount.

[0030] It should be noted that, in some embodiments, the vehicle includes a vehicle timer, and the refrigerant leakage amount of the refrigeration module can be obtained through the leakage detection device, and the cumulative time after the refrigerant starts to leak can be calculated through the vehicle timer, and then a relationship function between the refrigerant leakage amount and the cumulative time is established. The derivative of the relationship function at the current moment can be understood as the real-time instantaneous change rate of the refrigerant leakage amount.

[0031] Step S200: When the refrigerant leakage amount is greater than the first threshold and the instantaneous change rate is less than or equal to the second threshold, the vehicle is controlled to enter the normal leakage mode.

[0032] It should be noted that, in this step, the first threshold value can be set to 0, and the second threshold value is greater than 0. If the refrigerant leakage amount is greater than the first threshold value, it means that the refrigerant begins to leak. At this time, if the instantaneous change rate of the refrigerant leakage amount is less than or equal to the second threshold value, it means that the growth rate of the refrigerant leakage amount is small, and the refrigerant leakage condition is not too serious. The vehicle can be controlled to enter the normal leakage mode.

[0033] In some other embodiments, the first threshold may also be set to be greater than 0.

[0034] Step S300: When the refrigerant leakage amount is greater than a first threshold and the instantaneous change rate is greater than a second threshold, the vehicle is controlled to enter an emergency leakage mode.

[0035] It should be noted that in this step, the first threshold value can be set to 0, and the second threshold value is greater than 0. If the refrigerant leakage is greater than the first threshold value, and at the same time, the instantaneous change rate of the refrigerant leakage is greater than the second threshold value, it means that the refrigerant has begun to leak and the refrigerant leakage rate is increasing rapidly, and the refrigerant leakage condition is relatively serious, and the vehicle needs to be controlled to enter the emergency leakage mode. Whether the vehicle enters the normal leakage mode or the emergency leakage mode depends on the instantaneous change rate of the refrigerant leakage. In some other embodiments, the first threshold value can also be set to be greater than 0.

[0036] Both the first threshold and the second threshold are preset values, which are pre-stored in the storage. The first threshold and the second threshold can be obtained through simulation testing. In some embodiments, the first threshold and the second threshold can be related to the exhaust performance of the exhaust fan. If the exhaust performance of the exhaust fan is strong, the values ​​of the first threshold and the second threshold are higher. If the exhaust performance of the exhaust fan is weak, the values ​​of the first threshold and the second threshold are lower.

[0037] Step S400: When the vehicle is in the normal leakage mode, the switch valve is controlled to open and the exhaust fan is controlled to operate at a first speed.

[0038] It should be noted that at this time, since the refrigerant leakage is relatively minor, the exhaust capacity of the exhaust fan can discharge the leaked refrigerant in time, allowing the refrigeration module or other systems to continue to ensure normal operation without affecting the driving experience. It can be understood that when the vehicle is in normal leakage mode, the system executes the first control strategy. The first control strategy can be understood as a strategy of trying to discharge the leaked refrigerant while ensuring the normal operation of other systems.

[0039] In some embodiments, the exhaust fan continues to operate until the refrigerant leakage amount is less than or equal to a first threshold, and then the exhaust fan is controlled to be turned off.

[0040] Step S500: When the vehicle is in the emergency leakage mode, the switch valve is controlled to open and the exhaust fan is controlled to operate at a second speed, which is greater than the first speed; the vehicle is controlled to decelerate and stop.

[0041] It should be noted that at this time, the refrigerant leakage is serious and the vehicle can no longer continue to drive. There is a great safety risk. It is necessary to intervene in the vehicle's braking system to control the vehicle to automatically slow down and stop to ensure the safety of passengers. At the same time, it is necessary to control the exhaust fan to run at the second speed to quickly discharge the leaked refrigerant out of the vehicle. The second speed can be understood as full speed. It can be understood that when the vehicle is in emergency leakage mode, the system executes the second control strategy, which can be understood as a strategy to exhaust the leaked refrigerant to the greatest extent possible and ensure the safety of passengers.

[0042] In some embodiments, the exhaust fan continues to operate until the refrigerant leakage amount is less than or equal to a first threshold, and then the exhaust fan is controlled to be turned off.

[0043] The embodiment of the present invention provides a step method for detecting the leakage of refrigerant and a method for dealing with different leakage conditions of refrigerant. The leakage condition of the refrigerant is judged according to the leakage amount of the refrigerant and its instantaneous change rate. The judgment result is relatively accurate. When the leakage condition is relatively light, the vehicle is controlled to enter the normal leakage mode. When the leakage condition is relatively serious, the vehicle is controlled to enter the emergency leakage mode. By dividing the two leakage modes, it is conducive to making correct control strategies according to the corresponding leakage modes in the future. Specifically, in the normal leakage mode, the first control strategy is executed, and in the emergency leakage mode, the second control strategy is executed. Different leakage conditions can be flexibly dealt with, wherein the first control strategy includes opening the switch valve and controlling the exhaust fan to operate at a first speed, and the refrigeration module maintains normal operation. The second control strategy includes controlling the switch valve to open and controlling the exhaust fan to operate at a second speed; controlling the vehicle to slow down and stop. The second speed is greater than the first speed. In order to ensure that the leaked refrigerant is discharged in the shortest time, the speed of the exhaust fan is relatively high. Since the refrigeration leakage is relatively serious, there is a great risk for the vehicle to continue to drive. At this time, the vehicle is automatically controlled to slow down and stop, which can ensure the safety of passengers.

[0044] Reference Figure 3 As shown, in some embodiments, the first control strategy further includes at least one of step S410, step S420 and step S430.

[0045] Step S410: Control the vehicle windows to close.

[0046] Step S420: Control the vehicle to send out an alarm signal.

[0047] Step S430: Control the refrigeration module to stop working.

[0048] In this embodiment, steps S400, S410, step S420 and step S430 can be executed simultaneously. In step S410, by closing the windows, the refrigerant discharged from the outside of the vehicle can be prevented from entering the passenger compartment through the windows. In step S420, the alarm signal is characterized by a refrigerant leak. By issuing an alarm signal, the driver is reminded that the vehicle has a refrigerant leak, and the driver is reminded to pull over as soon as possible and let the passengers get off the vehicle, and the driver is asked to repair the vehicle as soon as possible. The alarm signal can be issued in the form of a warning light, a buzzer or a voice prompt. In step S430, the expansion valve and the compressor of the refrigeration module can be controlled to stop working, thereby reducing the amount of refrigerant leakage or slowing down the increase in the amount of refrigerant leakage.

[0049] Reference Figure 2As shown, in some embodiments, the vehicle refrigeration system further includes an air outlet module 400 and a heat exchanger 500, the air outlet module 400 includes an air outlet fan 420 and an air outlet channel 410, the air outlet channel 410 is connected to the passenger compartment of the vehicle, the air outlet channel 410 is not directly connected to the inner cavity of the housing 100, the air outlet fan 420 is arranged in the air outlet channel 410, and the air outlet channel 410 exchanges heat with the evaporator 220 through the heat exchanger 500. Specifically, the heat exchanger 500 can be connected to the outer wall of the housing 100, the heat exchanger 500 can be arranged outside the housing 100, and the heat exchanger 500 is connected to the outer wall of the air outlet channel 410. During cooling, the coldness of the evaporator 220 can be transferred to the air outlet channel 410 through the heat exchanger 500, so that the temperature of the air in the air outlet channel 410 is reduced, and the air outlet fan 420 can drive the cold air in the air outlet channel 410 to blow to the passenger compartment to achieve a cooling effect.

[0050] In the present embodiment, when the refrigeration module 200 is arranged in the shell 100, the heat exchanger 500 is provided to allow the evaporator 220 to exchange heat with the air outlet channel 410, so that the heat exchange efficiency can be improved. In addition, the inner cavity of the shell 100 is not connected to the air outlet channel 410, so that when the refrigerant leaks, the leaked refrigerant is not easy to enter the passenger compartment directly from the inner cavity of the shell 100 through the air outlet channel 410, so the safety of the passengers can be guaranteed.

[0051] Reference Figure 3 As shown, in some embodiments, the second control strategy further includes at least one of step S510, step S520, step S530 and step S540.

[0052] Step S510: Control the air outlet fan to be turned off; Step S520: Control the vehicle's windows to close.

[0053] Step S530: Control the vehicle to send out an alarm signal; Step S540: Control the refrigeration module to stop working.

[0054] In this embodiment, step S500, step S510, step S520, step S530 and step S540 can be performed simultaneously. In step S510, by turning off the air outlet fan, the situation where the air outlet fan blows the leaked refrigerant into the passenger compartment can be alleviated. In step S520, by closing the windows, the refrigerant discharged from the outside of the vehicle can be prevented from entering the passenger compartment through the windows. By issuing an alarm signal to remind the driver that the vehicle has a refrigerant leak, remind the driver to pull over as soon as possible and let the passengers get off, and let the driver repair the vehicle as soon as possible. The alarm signal can be issued in the form of a warning light, a buzzer or a voice prompt. In step S540, the expansion valve and the compressor of the refrigeration module can be controlled to stop working, thereby reducing the amount of refrigerant leakage or slowing down the increase in the amount of refrigerant leakage.

[0055] It should be noted that the vehicle may be involved in a collision accident. At this time, if the refrigerant leaks, the collision will cause the R290 refrigerant to be extremely easy to ignite, so there is a great safety risk. Based on this, in some embodiments, the vehicle includes a collision detection device, which is used to detect whether the vehicle is in a collision state. If the vehicle is in a collision state, the collision detection device will send a collision signal to the control unit of the vehicle. Generally speaking, vehicles are equipped with built-in collision detection devices, which are mainly used to determine the collision intensity of the vehicle and to determine whether to inflate the airbag. The collision detection device includes a collision sensor. When a car collides, the collision sensor detects the intensity signal of the car collision. The system determines whether to detonate the inflation element to inflate the airbag based on the intensity signal of the collision sensor.

[0056] In some embodiments, most collision sensors use an inertial mechanical switch structure, which is equivalent to a control switch. Whether the vehicle is in a collision state depends on the magnitude of the acceleration detected by the collision sensor when the vehicle collides. Collision sensors can be divided into mechanical and electronic types according to their structure. Mechanical types include rolling ball type, roller type, and eccentric ball type.

[0057] Based on this, refer to Figure 3 As shown, the refrigerant leakage response method further includes step S600.

[0058] Step S600: When the refrigerant leakage amount is greater than a first threshold and a collision signal from a collision detection device is received, the vehicle is controlled to enter an emergency leakage mode.

[0059] In this embodiment, if the refrigerant leakage amount is greater than the first threshold value, it indicates that a refrigerant leakage has occurred. Receiving a collision signal from the collision detection device indicates that the vehicle is in a collision state. At this time, the vehicle is controlled to enter an emergency leakage mode. By executing the above-mentioned second control strategy, the leaked refrigerant is quickly discharged and it is ensured that the leaked refrigerant does not enter the passenger compartment, thereby ensuring the safety of the occupants.

[0060] In some embodiments, the vehicle includes a main power supply, which can be understood as the vehicle's battery. The main power supply is used to power electronic components in the vehicle, such as the vehicle's refrigeration system. The main power supply is generally arranged at the side of the vehicle. When the side of the vehicle is collided or the main power supply is damaged due to other factors, the anti-leakage module cannot work after losing the power supply of the main power supply. Based on this, in some embodiments, the vehicle also includes a backup power supply. Compared with the main power supply, the backup power supply can be arranged at other locations of the vehicle. Even if the main power supply is damaged, the backup power supply located at other locations is likely not to be damaged. At this time, the anti-leakage module can be powered by the backup power supply, and the volume of the backup power supply can be smaller than the volume of the main power supply to reduce the space occupied by the backup power supply.

[0061] Reference Figure 4 As shown, based on this, the refrigerant leakage response method also includes step S700 and step S800.

[0062] Step S700: Acquire the operating status of the main power supply.

[0063] Step S800: When the main power supply is in a fault state, the backup power supply is controlled to supply power to the anti-leakage module.

[0064] In this embodiment, when a vehicle collides, considering that the main power supply may be damaged, a backup power supply is provided to power the anti-leakage module, thereby ensuring that the anti-leakage module operates normally and that the leaked refrigerant can be discharged.

[0065] It should be noted that if the refrigerant leaks, when the vehicle is hit or collides, it is very easy to ignite the refrigerant and further increase the risk of accidents. Based on this, in some embodiments, the vehicle includes a collision prediction device, which can predict that the vehicle is about to collide. The collision prediction device can evaluate the collision risk of the vehicle in real time. For example, when the collision risk is greater than the third threshold, the collision risk is greater and the vehicle is about to collide. The collision prediction device sends a warning signal to the control unit of the vehicle, allowing the control unit to control various components to execute a control strategy to prevent collisions. The collision prediction device can adopt a technical solution in the prior art, which will not be repeated here.

[0066] Based on this, the refrigerant leakage response method further includes step S900.

[0067] Step S900: When the refrigerant leakage amount is greater than the first threshold and the vehicle receives a warning signal, the vehicle is controlled to enter an emergency leakage mode, and the warning signal indicates that the collision risk of the vehicle is greater than a third threshold.

[0068] In this embodiment, a warning signal is sent by a collision prediction device. If a warning signal is received, it indicates that the collision risk of the vehicle is greater than the third threshold value, that is, the vehicle is about to collide and there is a high risk of collision. At this time, if the refrigerant leakage amount is detected to be greater than the first threshold value, it indicates that there is a refrigerant leakage. At this time, the vehicle is controlled to enter the emergency leakage mode and the second control strategy of the above embodiment is executed to discharge the leaked refrigerant as soon as possible, thereby achieving the discharge of the leaked refrigerant in advance before the vehicle collides, reducing the risk of the energy generated by the vehicle collision igniting the refrigerant.

[0069] In some embodiments, after the first control strategy or the second control strategy is executed, that is, after the leaked refrigerant is emptied, the system will automatically reset and record the event in the vehicle's fault diagnosis system for later maintenance reference.

[0070] Reference Figure 5 The figure shows a flow chart of steps of the refrigerant leakage response method of some embodiments of the present invention, wherein V0 is the first threshold value and A1 is the second threshold value. When the refrigerant leakage amount V is greater than V0 and the instantaneous change rate of the refrigerant leakage amount is less than or equal to A1, the vehicle enters the normal leakage mode and executes the first control strategy to ensure the normal operation of other systems while ensuring the safety of passengers; when the refrigerant leakage amount V is greater than V0 and the instantaneous change rate of the refrigerant leakage amount is greater than A1, the vehicle enters the emergency leakage mode and executes the second control strategy to ensure the safety of passengers as much as possible. The refrigerant leakage situation can be flexibly dealt with.

[0071] An embodiment of the present invention further provides a vehicle, which includes the vehicle refrigeration system of the above embodiment. Therefore, the vehicle has the above beneficial effects, which will not be described in detail here.

[0072] Specifically, the vehicle of the embodiment of the present invention may be a private car, such as a sedan, SUV, MPV or pickup truck. The vehicle may also be an operating vehicle, such as a van, bus, small truck or large trailer. The vehicle may be a gasoline vehicle or a new energy vehicle. When the vehicle is a new energy vehicle, it may be a hybrid vehicle or a pure electric vehicle.

[0073] An embodiment of the present invention further provides an electronic device, comprising at least one processor and at least one memory, wherein the memory is used to store at least one program. When the at least one program is executed by the at least one processor, the at least one processor implements the refrigerant leakage response method as described in the above embodiment.

[0074] Reference Figure 6 As shown, Figure 6The hardware structure of an electronic device of another embodiment is illustrated, and the electronic device includes: a processor, which can be implemented by a general-purpose CPU (Central Processing Unit), a microprocessor, an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solution provided in the embodiment of the present application; a memory, which can be implemented in the form of a read-only memory (Read Only Memory, ROM), a static storage device, a dynamic storage device or a random access memory (Random Access Memory, RAM), etc. The memory can store an operating system and other application programs. When the technical solutions provided in the embodiments of this specification are implemented through software or firmware, the relevant program codes are stored in the memory and are called by the processor to execute the refrigerant leakage response method of the embodiments of the present invention; an input / output interface is used to realize information input and output; a communication interface is used to realize communication interaction between this device and other devices, and communication can be realized through wired methods (such as USB, network cables, etc.) or wireless methods (such as mobile networks, WIFI, Bluetooth, etc.); a bus transmits information between various components of the device (such as processors, memories, input / output interfaces and communication interfaces); wherein the processor, memory, input / output interface and communication interface realize communication connection with each other within the device through the bus.

[0075] An embodiment of the present invention further provides a computer-readable storage medium, which includes a stored program, wherein when the program is run, the processor of the device where the program is located is controlled to execute the refrigerant leakage response method of the above embodiment.

[0076] An embodiment of the present invention further provides a computer program product, including a computer program, which implements the refrigerant leakage response method of the above embodiment when the computer program is executed by a processor.

[0077] In the description of the present invention, it should be understood that descriptions involving orientation, such as orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0078] In the description of the present invention, "a plurality" means more than two. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0079] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0080] The terms "first", "second", "third", "fourth", etc. (if any) in the specification of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations 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 that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0081] It should be understood that in the present application, "at least one (item)" means one or more, and "plurality" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple. In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0082] In the embodiments of the present application, the term "module" or "unit" refers to a computer program or a part of a computer program that has a predetermined function and works together with other related parts to achieve a predetermined goal, and can be implemented in whole or in part by using software, hardware (such as processing circuits or memories), or a combination thereof. Similarly, a processor (or multiple processors or memories) can be used to implement one or more modules or units. In addition, each module or unit can be part of an overall module or unit that includes the function of the module or unit.

[0083] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0084] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0085] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, referred to as ROM), random access memory (Random Acce Memory, referred to as RAM), disk or optical disk and other media that can store program codes.

[0086] The step numbers in the above method embodiment are only provided for the convenience of explanation and description, and no limitation is imposed on the order of the steps. The execution order of each step in the embodiment can be adaptively adjusted according to the understanding of those skilled in the art.

Claims

1. A vehicle refrigeration system, characterized in that: include: A housing having an inner cavity; A refrigeration module is disposed in the inner cavity; The anti-leakage module includes a leakage detection device, an exhaust channel and an exhaust fan, wherein the leakage detection device is connected to the shell and is used to detect the refrigerant leakage of the refrigeration module, the exhaust channel is communicated with the shell, the exhaust fan is arranged in the exhaust channel or the inner cavity, and the exhaust channel is provided with a switch valve, and the switch valve is used to close or open the exhaust channel.

2. A method for dealing with refrigerant leakage, characterized in that: Applied to a vehicle, the vehicle includes the vehicle refrigeration system according to claim 1, and the refrigerant leakage response method includes: Obtaining the refrigerant leakage amount and the accumulated time, and establishing a relationship function between the refrigerant leakage amount and the accumulated time, and determining that the derivative of the relationship function at the current moment is the instantaneous change rate of the refrigerant leakage amount; When the refrigerant leakage amount is greater than a first threshold and the instantaneous change rate is less than or equal to a second threshold, controlling the vehicle to enter a normal leakage mode; When the refrigerant leakage amount is greater than the first threshold and the instantaneous change rate is greater than the second threshold, controlling the vehicle to enter an emergency leakage mode; When the vehicle is in the normal leakage mode, controlling the switch valve to open and controlling the exhaust fan to operate at a first speed; When the vehicle is in the emergency leakage mode, the switch valve is controlled to open and the exhaust fan is controlled to operate at a second speed, and the vehicle is controlled to decelerate and stop, and the second speed is greater than the first speed.

3. The refrigerant leakage response method according to claim 2, characterized in that: The refrigeration module includes an evaporator, the vehicle refrigeration system includes an air outlet module and a heat exchanger, the air outlet module includes an air outlet fan and an air outlet channel, the air outlet channel is connected to the passenger compartment of the vehicle, the air outlet fan is arranged in the air outlet channel, the air outlet channel exchanges heat with the evaporator through the heat exchanger, and the refrigerant leakage response method also includes: When the vehicle is in the emergency leakage mode, the air outlet fan is controlled to be closed, and the windows of the vehicle are controlled to be closed.

4. The refrigerant leakage response method according to claim 3, characterized in that: The vehicle includes a collision detection device, and the collision detection device is used to detect whether the vehicle is in a collision state. The refrigerant leakage response method also includes: When the refrigerant leakage amount is greater than a first threshold and a collision signal from the collision detection device is received, the vehicle is controlled to enter the emergency leakage mode.

5. The refrigerant leakage response method according to claim 2, characterized in that: The refrigerant leakage response method also includes: When the vehicle is in the normal leakage mode or the emergency leakage mode, the refrigeration module is controlled to stop working, and the vehicle is controlled to send out an alarm signal.

6. The refrigerant leakage response method according to claim 2, characterized in that: The vehicle includes a main power supply and a backup power supply, and the refrigerant leakage response method further includes: Obtaining the operating status of the main power supply; When the main power supply is in a fault state, the backup power supply is controlled to supply power to the anti-leakage module.

7. A vehicle, characterized in that: A vehicle refrigeration system comprising the vehicle refrigeration system of claim 1.

8. An electronic device, characterized in that: include: at least one processor; at least one memory for storing at least one program; When the at least one program is executed by the at least one processor, the at least one processor implements the refrigerant leakage coping method according to any one of claims 2 to 6.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored program, wherein when the program is executed, the refrigerant leakage response method according to any one of claims 2 to 6 is executed in a processor of a device where the program is controlled.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the refrigerant leakage response method according to claims 2 to 6 is implemented.

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