Warm air waterway degassing method and system for hybrid power vehicle type and hybrid power vehicle

Abstract

The invention relates to the technical field of warm air system degassing, in particular to a warm air water way degassing method and system for a hybrid power vehicle model and a hybrid power vehicle. The warm air water way degassing method for the hybrid power vehicle model comprises the steps that information of the vehicle is obtained, whether the vehicle meets basic conditions currently or not is judged, and under the condition that the basic conditions are met, the warm air water way degassing system for the hybrid power vehicle model is started; determining the working condition of the vehicle according to the battery state and the air-conditioning state; the basic conditions comprise power supply of a thermal management controller, vehicle speed less than or equal to 0, engine starting and rotation speed gt; 0; switching to a corresponding degassing mode according to the working condition of the vehicle; and before degassing is completed, whether the working condition of the vehicle changes or not is monitored in real time, and if yes, the degassing mode is quitted. The corresponding degassing mode can be switched according to the working condition of the vehicle, and interference to the battery and air conditioner functions is avoided while degassing is rapidly completed.

Description

Technical Field

[0001] The present invention relates to the technical field of air removal in a warm air system, and particularly to a method and system for removing air from a warm water circuit for a hybrid vehicle and a hybrid vehicle. Background Art

[0002] Air removal from the warm water circuit is to solve problems such as a decrease in heat transfer efficiency and damage to system stability caused by air residue in the cooling system. Chinese Patent Application Publication No. CN118683286A discloses a warm air system, a hybrid vehicle, and a method for removing air from the warm air system. The warm air system speeds up the flow rate of the coolant in the warm water circuit by using the engine water pump inside the engine, improves the efficiency of air removal, and switches different exhaust modes according to the temperature of the coolant. However, the air removal strategy of this method for removing air from the warm air system is not clear, and the air removal strategy under different working conditions of the hybrid vehicle is not considered. Summary of the Invention

[0003] The purpose of the present invention is to address the deficiencies of the prior art and provide a method and system for removing air from a warm water circuit for a hybrid vehicle and a hybrid vehicle, which can switch to the corresponding air removal mode according to the working conditions of the vehicle, and while quickly completing air removal, avoid interfering with the battery and air conditioning functions.

[0004] To solve the above technical problems, in a first aspect, the present invention provides a method for removing air from a warm water circuit for a hybrid vehicle, including:

[0005] Obtain information of the vehicle, determine whether the vehicle currently meets the basic conditions, and if the basic conditions are met, determine the working conditions of the vehicle according to the battery state and the air conditioning state; the basic conditions include power supply of the thermal management controller, vehicle speed ≤ 0, engine start and engine speed > 0;

[0006] Switch to the corresponding air removal mode according to the working conditions of the vehicle;

[0007] During air removal, monitor in real time whether the working conditions of the vehicle change. If a change occurs, exit the air removal mode.

[0008] In some embodiments, switching to the corresponding air removal mode according to the working conditions of the vehicle includes: determining the opening time and flow rate ratio of the battery heating side pipeline and the warm air side pipeline according to the battery state and the air conditioning state, and determining the opening time of the corresponding functions of the battery and the air conditioning, so as to avoid the battery heating side pipeline or the warm air side pipeline from affecting the corresponding functions of the battery and the air conditioning.

[0009] Further, if both the battery and the air conditioner are in the no-mode state, it is determined that the vehicle is in the first working condition, and the first degassing mode is turned on. The first degassing mode includes: simultaneously turning on the battery heating side pipeline and the warm air side pipeline, connecting the warm air side pipeline to the engine water jacket side pipeline, the engine maintaining a certain speed, turning on the warm water pump and the engine water pump, so that the coolant in the battery heating side pipeline and the warm air side pipeline flows through the expansion tank of the engine and then discharges the gas.

[0010] Further, if the battery is in the charging state and the battery cooling function is turned on, and the air conditioner is in the no-mode state, it is determined that the vehicle is in the second working condition, and the second degassing mode is turned on. The second degassing mode includes: turning on the battery heating side pipeline, connecting the warm air side pipeline to the engine water jacket side pipeline, the engine maintaining a certain speed, turning on the warm water pump and the engine water pump, so that the coolant in the battery heating side pipeline flows through the expansion tank of the engine and then discharges the gas. After the battery heating side pipeline is turned on for t 1 time, the battery heating side pipeline is turned off, and the warm air side pipeline is turned on, so that the coolant in the warm air side pipeline flows through the expansion tank of the engine and then discharges the gas. The battery water pump on the battery pipeline is started, and the electric compressor on the refrigerant refrigeration pipeline is started, and the coolant in the battery pipeline is cooled by using the refrigerant refrigeration pipeline.

[0011] Further, if the battery is in the charging state and the battery heating function is turned on, and the air conditioner is in the no-mode state, it is determined that the vehicle is in the third working condition, and the third degassing mode is turned on. The third degassing mode includes: simultaneously turning on the battery heating side pipeline and the warm air side pipeline, the flow rate of the battery heating side pipeline being greater than that of the warm air side pipeline, connecting the warm air side pipeline to the engine water jacket side pipeline, the engine maintaining a certain speed, turning on the warm water pump and the engine water pump, so that the coolant in the battery heating side pipeline and the warm air side pipeline flows through the expansion tank of the engine and then discharges the gas. After the warm water pump runs for t 2 time, the battery water pump on the battery pipeline is started and the WPTC is turned on, and the coolant in the battery pipeline is heated by using the battery heating side pipeline.

[0012] Further, if the battery is in the no-mode state and the air conditioner is in the refrigeration mode, it is determined that the vehicle is in the fourth working condition, and the fourth degassing mode is turned on. The fourth degassing mode includes: turning on the warm air side pipeline, connecting the warm air side pipeline to the engine water jacket side pipeline, the engine maintaining a certain speed, turning on the warm water pump and the engine water pump, so that the coolant in the warm air side pipeline flows through the expansion tank of the engine and then discharges the gas. After the warm water pump runs for t 3 time, the warm air side pipeline is turned off, and the battery heating side pipeline is turned on, so that the coolant in the battery heating side pipeline flows through the expansion tank of the engine and then discharges the gas. The electric compressor on the refrigerant refrigeration pipeline is started, and the cold air side pipeline on the refrigerant refrigeration pipeline is turned on to cool the cockpit.

[0013] Further, if the battery is in the no - mode state and the air conditioner is in the heating mode, it is determined that the vehicle is in the fifth working condition, and the fifth degassing mode is turned on. The fifth degassing mode includes: simultaneously turning on the battery heating side pipeline and the warm - air side pipeline, connecting the warm - air side pipeline to the engine water jacket side pipeline, maintaining a certain engine speed, turning on the warm - air water pump and the engine water pump, so that the coolant in the battery heating side pipeline and the warm - air side pipeline flows through the expansion tank of the engine and then discharges the gas. After the warm - air water pump runs for t 4 time, turn on the WPTC, and use the warm - air core to heat the cockpit.

[0014] Further, after turning on the degassing mode, if the warm - air water pump reports an idle - running protection fault during operation, disconnect the relay of the warm - air water pump for n seconds and then re - close the relay.

[0015] In a second aspect, the present invention provides a warm - air water - way degassing system for a hybrid vehicle model, including:

[0016] A warm - air pipeline, the warm - air pipeline includes a warm - air side pipeline, and a battery heating side pipeline is connected in parallel to the warm - air pipeline. The battery heating side pipeline and the warm - air pipeline are connected through an electric three - way valve. The electric three - way valve is used to control the flow ratio of the warm - air side pipeline and the battery heating side pipeline. A warm - air core is arranged on the warm - air side pipeline, and the warm - air core is used to heat the cockpit;

[0017] An engine pipeline, the engine pipeline is connected to the warm - air pipeline through an electric four - way valve;

[0018] A battery pipeline, the battery pipeline can exchange heat with the battery heating side pipeline;

[0019] A refrigerant refrigeration pipeline, the refrigerant refrigeration pipeline can exchange heat with the battery pipeline. A cold - air side pipeline is arranged on the refrigerant refrigeration pipeline, and an evaporator is arranged on the cold - air side pipeline. The evaporator is used to cool the cockpit.

[0020] In a third aspect, the present invention provides a hybrid vehicle including the warm - air water - way degassing system for the hybrid vehicle model.

[0021] The beneficial effects of the present invention are as follows: By reasonably setting the opening time and flow ratio of the battery heating side pipeline and the warm - air side pipeline of the warm - air pipeline, as well as the opening time of the corresponding functions of the battery and the air conditioner, it is ensured that the various functions do not interfere with each other and promote each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural diagram of the warm - air water - way degassing system for the hybrid vehicle model of the present invention.

[0023] Reference numerals: warm air pipeline 1; warm air side pipeline 11; battery heating side pipeline 12; electric three-way valve 13; warm water pump 14; WPTC 15; electric four-way valve 16; first heat exchanger 17; warm air core 18; engine pipeline 2; engine water jacket 21; high-temperature radiator 22; first expansion tank 23; fan 24; battery pipeline 3; second heat exchanger 31; battery water pump 32; second expansion tank 33; refrigerant refrigeration pipeline 4; electric compressor 41; cold air side pipeline 42; evaporator 43; condenser 44; thermal expansion valve 45; electronic expansion valve 46; solenoid valve 47. Detailed implementation

[0024] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0025] As Figure 1 shown, the present invention provides a warm water deaeration system for a hybrid vehicle, including:

[0026] The warm air pipeline 1 is provided with a warm water pump 14 and a WPTC 15. The warm water pump 14 is used to drive the coolant in the warm air pipeline 1 to flow, and the WPTC 15 (positive temperature coefficient thermistor heating system) is used to heat the coolant in the warm air pipeline 1. The warm air pipeline 1 includes a warm air side pipeline 11. A battery heating side pipeline 12 is connected in parallel to the warm air pipeline 1. The battery heating side pipeline 12 is connected to the warm air pipeline 1 through an electric three-way valve 13. The electric three-way valve 13 is used to control the flow ratio of the warm air side pipeline 11 and the battery heating side pipeline 12. That is, after the coolant flowing out of the WPTC 15 passes through the electric three-way valve 13, a part can flow to the warm air side pipeline 11, and the other part can flow to the battery heating side pipeline 12. A warm air core 18 is provided on the warm air side pipeline 11, and the warm air core 18 is used to heat the cockpit. A first heat exchanger 17 is provided on the battery heating side pipeline 12.

[0027] The engine pipeline 2 is connected to the warm air pipeline 1 through an electric four-way valve 16. By adjusting the electric four-way valve 16, the engine pipeline 2 and the warm air pipeline 1 can be connected. The engine pipeline 2 includes an engine water jacket 21, and the engine water jacket 21 is used to take away the heat generated by the engine. A high-temperature radiator 22 and a first expansion tank 23 are provided on the engine pipeline 2. A fan 24 is provided on the high-temperature radiator 22, and the high-temperature radiator 22 is used to cool the coolant in the engine pipeline 2.

[0028] The battery pipeline 3 is used to heat or cool the battery pack. The battery pipeline 3 is connected to the first heat exchanger 17, enabling the battery pipeline 3 to exchange heat with the battery heating side pipeline 12. A second heat exchanger 31 and a second expansion tank 33 are provided on the battery pipeline 3.

[0029] The refrigerant refrigeration pipeline 4 is connected to the second heat exchanger 31, enabling the refrigerant refrigeration pipeline 4 to exchange heat with the battery pipeline 3. An electric compressor 41, a condenser 44, and an electronic expansion valve 46 are provided on the refrigerant refrigeration pipeline 4. A cold air side pipeline 42 is also provided on the refrigerant refrigeration pipeline 4. An evaporator 43, a thermal expansion valve 45, and a solenoid valve 47 are provided on the cold air side pipeline 42. The evaporator 43 is used to refrigerate the cockpit.

[0030] The present invention provides a method for degassing the heating water pipeline of a hybrid vehicle, including:

[0031] Obtain the information of the vehicle, determine whether the vehicle currently meets the basic conditions, and if the basic conditions are met, determine the working conditions of the vehicle according to the battery state and the air conditioning state; the basic conditions include the power supply of the thermal management controller, the vehicle speed ≤ 0, the engine is started and the engine speed > 0;

[0032] Switch to the corresponding degassing mode according to the working conditions of the vehicle;

[0033] Before the degassing is completed, continuously monitor whether the working conditions of the vehicle change. If the conditions change, exit the degassing mode.

[0034] In some embodiments, switching to the corresponding degassing mode according to the working conditions of the vehicle includes: determining the opening time and flow ratio of the battery heating side pipeline 12 and the warm air side pipeline 11 according to the battery state and the air conditioning state, and determining the opening time of the corresponding functions of the battery and the air conditioning, so as to avoid the battery heating side pipeline 12 or the warm air side pipeline 11 from affecting the corresponding functions of the battery and the air conditioning.

[0035] It can be understood that since the heating and cooling of the battery pack, and the refrigeration and heating of the air conditioning are all related to the heating water pipeline 1, if the heating water pipeline 1 is directly degassed when the battery pack is heating or cooling, or the air conditioning is refrigerating or heating, it is very likely to have a greater impact on the heating or cooling effect of the battery pack and the refrigeration or heating effect of the air conditioning. Therefore, the present invention ensures that the various functions do not interfere with each other and promote each other by reasonably setting the opening time and flow ratio of the battery heating side pipeline 12 and the warm air side pipeline 11 of the heating water pipeline 1, as well as the opening time of the corresponding functions of the battery and the air conditioning.

[0036] Further, if both the battery and the air conditioner are in the no-mode state (i.e., the battery is in the uncharged state and both the heating and cooling functions of the battery are not turned on, and both the heating and cooling functions of the air conditioner are not turned on), it is determined that the vehicle is in the first working condition, and the first deaeration mode is turned on. The first deaeration mode includes: simultaneously turning on the battery heating side pipeline 12 and the warm air side pipeline 11, and the flow rate ratio of the battery heating side pipeline 12 to the warm air side pipeline 11 is 50%:50%. The electric four-way valve 16 is used to connect the warm air side pipeline 11 with the engine water jacket 21 side pipeline. The engine maintains a certain speed (such as 1500 rpm), and the warm air water pump 14 and the engine water pump are turned on, so that the coolant in the battery heating side pipeline 12 and the warm air side pipeline 11 flows through the first expansion tank 23 of the engine to discharge gas. Observe the generation of bubbles in the first expansion tank 23. If the bubbles decrease after running for a period of time, the deaeration mode can be exited, and the deaeration is completed.

[0037] It can be understood that, as Figure 1 shown, the electric three-way valve 13 adjusts the flow rate ratio of the battery heating side pipeline 12 to the warm air side pipeline 11 to 50%:50%. The electric four-way valve 16 connects the warm air pipeline 1 and the engine pipeline 2, so that under the action of the warm air water pump 14 and the engine water pump, the coolant in the entire warm air pipeline 1 quickly circulates in the warm air pipeline 1 and the engine pipeline 2. When the coolant flows through the first expansion tank 23, the gas in the coolant is discharged. In the first deaeration mode, the heat of the engine can increase the temperature of the coolant, which is beneficial to improving the deaeration efficiency.

[0038] Further, if the battery is in the charging state and the battery cooling function is turned on, and the air conditioner is in the no-mode state, it is determined that the vehicle is in the second working condition, and the second deaeration mode is turned on. The second deaeration mode includes: turning on the battery heating side pipeline 12. At this time, the warm air side pipeline 11 is not turned on, and the flow rate ratio of the battery heating side pipeline 12 to the warm air side pipeline 11 is 100%:0%. Connect the warm air side pipeline 11 with the engine water jacket 21 side pipeline. The engine maintains a certain speed (such as 1500 rpm), and the warm air water pump 14 and the engine water pump are turned on, so that the coolant in the battery heating side pipeline 12 flows through the first expansion tank 23 of the engine to discharge gas. Turn on the battery heating side pipeline 12t 1 time later (t 1 can be preset according to the bubble situation in the first expansion tank 23. For example, t 1= 10 s), close the battery heating side pipeline 12 and open the warm air side pipeline 11. At this time, the flow rate ratio of the battery heating side pipeline 12 to the warm air side pipeline 11 is 0%:100%. The coolant in the warm air side pipeline 11 discharges gas after flowing through the first expansion tank 23 of the engine. Start the battery water pump 32 on the battery pipeline 3 and start the electric compressor 41 on the refrigerant refrigeration pipeline 4. Use the second heat exchanger 31 on the refrigerant refrigeration pipeline 4 to cool the coolant in the battery pipeline 3.

[0039] It can be understood that when the battery is in the charging state and the battery cooling function is turned on, and the air conditioner is in the no-mode state, if the coolant in the battery pipeline 3 is circulating while the coolant in the battery heating side pipeline 12 of the warm air pipeline 1 is also circulating, the battery heating side pipeline 12 will heat the coolant in the battery pipeline 3 through the first heat exchanger 17, affecting the battery cooling function. In the present invention, by first opening the battery heating side pipeline 12 to degas the coolant in the battery heating side pipeline 12, after the degassing is completed, closing the battery heating side pipeline 12 and opening the warm air side pipeline 11 to degas the coolant in the warm air side pipeline 11, and at the same time starting the battery water pump 32 on the battery pipeline 3 and the electric compressor 41 on the refrigerant refrigeration pipeline 4, since the coolant in the warm air pipeline 1 only flows from the warm air side pipeline 11 to the engine pipeline 2, the coolant in the warm air pipeline 1 will not exchange heat with the coolant in the battery pipeline 3 through the first heat exchanger 17, thus avoiding the influence of the degassing of the warm air pipeline 1 on the battery cooling function.

[0040] Furthermore, if the battery is in the charging state and the battery heating function is turned on, and the air conditioner is in the no-mode state, it is determined that the vehicle is in the third working condition, and the third degassing mode is turned on. The third degassing mode includes: simultaneously opening the battery heating side pipeline 12 and the warm air side pipeline 11, the flow rate of the battery heating side pipeline 12 is greater than that of the warm air side pipeline 11. For example, the flow rate ratio of the battery heating side pipeline 12 to the warm air side pipeline 11 is 70%:30%. Connect the warm air side pipeline 11 to the engine water jacket 21 side pipeline, the engine maintains a certain speed (such as 1500 rpm), turn on the warm air water pump 14 and the engine water pump, so that the coolant in the battery heating side pipeline 12 and the warm air side pipeline 11 discharges gas after flowing through the first expansion tank 23 of the engine. After the warm air water pump 14 runs for t 2 time, start the battery water pump 32 on the battery pipeline 3 and turn on the WPTC 15 to heat the coolant in the battery pipeline 3 using the battery heating side pipeline 12.

[0041] It can be understood that, since there is air in the warm air pipeline 1, directly turning on the WPTC 15 to heat the coolant in the battery pipeline 3 will cause cavitation to the WPTC 15. Therefore, in the present invention, the battery heating side pipeline 12 and the warm air side pipeline 11 are first turned on simultaneously to discharge most of the air in the coolant in the entire warm air pipeline 1, and then the battery water pump 32 and the WPTC 15 are started (i.e., the battery heating function is turned on), avoiding cavitation of the WPTC 15. And after the WPTC 15 is turned on, degassing is still in progress, and the WPTC 15 can further increase the temperature of the coolant in the warm air pipeline, further improving the degassing efficiency; in addition, the flow rate of the battery heating side pipeline 12 is greater than that of the warm air side pipeline 11, so that more heat is transferred to the coolant in the battery pipeline 3 through the first heat exchanger 17. Therefore, the present invention further improves the degassing efficiency by using the battery heating function while avoiding cavitation of the WPTC 15 caused by directly turning on the battery heating function.

[0042] Further, if the battery is in the no-mode state and the air conditioner is in the cooling mode, it is determined that the vehicle is in the fourth working condition, and the fourth degassing mode is turned on. The fourth degassing mode includes: turning on the warm air side pipeline 11. At this time, the battery heating side pipeline 12 is not turned on, and the flow rate ratio of the battery heating side pipeline 12 to the warm air side pipeline 11 is 0%:100%. Connect the warm air side pipeline 11 to the engine water jacket 21 side pipeline, the engine maintains a certain speed (such as 1500 rpm), turn on the warm air water pump 14 and the engine water pump, so that the coolant in the warm air side pipeline 11 flows through the first expansion tank 23 of the engine and then discharges the gas. The warm air water pump 14 runs for t 3 time (t 3 can be preset according to the bubble condition in the first expansion tank 23. For example, t 3 = 10 s), turn off the warm air side pipeline 11, turn on the battery heating side pipeline 12. At this time, the flow rate ratio of the battery heating side pipeline 12 to the warm air side pipeline 11 is 100%:0%, so that the coolant in the battery heating side pipeline 12 flows through the first expansion tank 23 of the engine and then discharges the gas. Start the electric compressor 41 on the refrigerant cooling pipeline 4, and turn on the cold air side pipeline 42 on the refrigerant cooling pipeline 4 (i.e., turn on the solenoid valve 47) to cool the cockpit.

[0043] It can be understood that if the degassing of the warm air pipeline 1 is carried out while the air conditioner is cooling, since the coolant heated by the engine will flow through the warm air core 18, it will cause the air conditioner to blow hot air and cold air at the same time, affecting the air conditioning cooling function. In the present invention, the warm air side pipeline 11 is first turned on, and after most of the air in the warm air side pipeline 11 is discharged, the battery heating side pipeline 12 is turned on, so that the coolant in the warm air pipeline 1 does not flow through the warm air core 18, and the air conditioner only provides cold air to the cockpit through the evaporator 43. Therefore, the present invention can ensure the rapid degassing of the warm air pipeline 1 without affecting the air conditioning cooling function.

[0044] Further, if the battery is in the no - mode state and the air conditioner is in the heating mode, it is determined that the vehicle is in the fifth working condition, and the fifth degassing mode is turned on. The fifth degassing mode includes: simultaneously turning on the battery heating side pipeline 12 and the warm air side pipeline 11, and the flow rate of the warm air side pipeline 11 is greater than that of the battery heating side pipeline 12. For example, the flow rate ratio of the warm air side pipeline 11 to the battery heating side pipeline 12 is 30%:70%. Connect the warm air side pipeline 11 to the pipeline side of the engine water jacket 21, the engine maintains a certain speed (such as 1500 rpm), turn on the warm water pump 14 and the engine pump, so that the coolant in the battery heating side pipeline 12 and the warm air side pipeline 11 flows through the first expansion tank 23 of the engine to discharge gas. After the warm water pump 14 runs for t 4 time, turn on the WPTC 15, and use the warm air core 18 to heat the cockpit.

[0045] It can be understood that since the air - conditioning heating is the same as the battery heating, the WPTC 15 also needs to be turned on to heat the coolant in the warm air pipeline 1. Therefore, in the present invention, the battery heating side pipeline 12 and the warm air side pipeline 11 are turned on simultaneously. First, most of the air in the warm air pipeline 1 is discharged, and then the WPTC 15 is turned on, so that the hot air blown out by the air conditioner heats the cockpit. And after the WPTC 15 is turned on, degassing is still in progress. The WPTC 15 can further increase the temperature of the coolant in the warm air pipeline, further improving the degassing efficiency. In addition, the flow rate of the warm air side pipeline 11 is greater than that of the battery heating side pipeline 12, so that more heat passes through the warm air core 18, which is beneficial to improving the heating efficiency of the air conditioner. Therefore, the present invention improves the degassing efficiency by using the air - conditioning heating function while avoiding the cavitation of the WPTC 15 caused by directly turning on the air - conditioning heating function.

[0046] Further, after the degassing mode is turned on, if the warm water pump 14 reports an idle - running protection fault during operation, the relay of the warm water pump 14 is disconnected for 3 s and then re - closed. The warm water pump 14 reporting an idle - running protection fault may be due to more gas in the coolant, resulting in the warm water pump 14 running idly.

[0047] The present invention also provides a hybrid vehicle, including the above - mentioned warm water pipeline degassing system for hybrid vehicle models.

[0048] The above - described embodiments are only used to illustrate the technical solutions of the present application, not to limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A method for degassing a heating water channel for a hybrid vehicle, characterized in that: include: Obtain vehicle information and determine whether the vehicle currently meets basic conditions. If the basic conditions are met, determine the vehicle's operating condition based on the battery status and air conditioning status; The basic conditions include power supply to the thermal management controller, vehicle speed ≤ 0, engine start and speed > 0; Switch to the corresponding degassing mode according to the vehicle's operating conditions; Before degassing is completed, monitor in real time whether the vehicle's operating conditions have changed. If so, exit the degassing mode.

2. The method for degassing a heater water channel for a hybrid vehicle according to claim 1, characterized in that: Switching to a corresponding degassing mode according to the working condition of the vehicle includes: determining the opening time and flow ratio of the battery heating side pipeline (12) and the warm air side pipeline (11) according to the battery state and the air conditioning state, determining the opening time of the corresponding functions of the battery and the air conditioning, and avoiding the battery heating side pipeline (12) or the warm air side pipeline (11) from affecting the corresponding functions of the battery and the air conditioning.

3. The method for degassing a heater water channel for a hybrid vehicle according to claim 2, characterized in that: If the battery and the air conditioner are both in a non-mode state, it is determined that the vehicle is in a first operating condition and a first degassing mode is activated. The first degassing mode includes: simultaneously activating the battery heating side pipeline (12) and the warm air side pipeline (11), connecting the warm air side pipeline (11) with the engine water jacket (21) side pipeline, maintaining the engine at a certain speed, and activating the warm air water pump (14) and the engine water pump, so that the coolant in the battery heating side pipeline (12) and the warm air side pipeline (11) flows through the expansion tank of the engine and then discharges the gas.

4. The method for degassing a heater water channel for a hybrid vehicle according to claim 2, characterized in that: If the battery is in a charging state, the battery cooling function is turned on, and the air conditioner is in a non-mode state, it is determined that the vehicle is in a second operating condition and a second degassing mode is turned on. The second degassing mode includes: turning on the battery heating side pipeline (12), connecting the warm air side pipeline (11) with the engine water jacket (21) side pipeline, maintaining the engine at a certain speed, turning on the warm air water pump (14) and the engine water pump, so that the coolant in the battery heating side pipeline (12) flows through the engine expansion tank and then discharges gas, turning on the battery heating side pipeline (12) for t1 time, turning off the battery heating side pipeline (12), turning on the warm air side pipeline (11), so that the coolant in the warm air side pipeline (11) flows through the engine expansion tank and then discharges gas, starting the battery water pump (32) on the battery pipeline (3), starting the electric compressor (41) on the refrigerant refrigeration pipeline (4), and using the refrigerant refrigeration pipeline (4) to cool the coolant in the battery pipeline (3).

5. The method for degassing a heater water channel for a hybrid vehicle according to claim 2, characterized in that: If the battery is in a charging state, the battery heating function is turned on, and the air conditioner is in a non-mode state, it is determined that the vehicle is in a third operating condition, and a third degassing mode is turned on. The third degassing mode includes: turning on the battery heating side pipeline (12) and the warm air side pipeline (11) at the same time, the flow rate of the battery heating side pipeline (12) is greater than the flow rate of the warm air side pipeline (11), connecting the warm air side pipeline (11) with the side pipeline of the engine water jacket (21), maintaining a certain engine speed, turning on the warm air water pump (14) and the engine water pump, so that the coolant in the battery heating side pipeline (12) and the warm air side pipeline (11) flows through the expansion tank of the engine and then discharges gas, and after the warm air water pump (14) runs for t2 time, the battery water pump (32) on the battery pipeline (3) is started and the WPTC (15) is turned on, and the coolant in the battery pipeline (3) is heated by the battery heating side pipeline (12).

6. The method for degassing a heater water channel for a hybrid vehicle according to claim 2, characterized in that: If the battery is in a non-mode state and the air conditioner is in a cooling mode, it is determined that the vehicle is in a fourth operating condition and a fourth degassing mode is activated. The fourth degassing mode includes: activating a warm air side pipeline (11), connecting the warm air side pipeline (11) with a side pipeline of an engine water jacket (21), maintaining a certain engine speed, activating a warm air water pump (14) and an engine water pump, so that the coolant in the warm air side pipeline (11) flows through an expansion tank of the engine and then discharges gas; after the warm air water pump (14) runs for t3 time, closing the warm air side pipeline (11), activating a battery heating side pipeline (12), so that the coolant in the battery heating side pipeline (12) flows through an expansion tank of the engine and then discharges gas; activating an electric compressor (41) on a refrigerant cooling pipeline (4), and activating a cold air side pipeline (42) on a refrigerant cooling pipeline (4) to cool the cockpit.

7. The method for degassing a heater water channel for a hybrid vehicle according to claim 2, characterized in that: If the battery is in a non-mode state and the air conditioner is in a heating mode, it is determined that the vehicle is in a fifth operating condition and a fifth degassing mode is activated. The fifth degassing mode includes: simultaneously activating the battery heating side pipeline (12) and the warm air side pipeline (11), connecting the warm air side pipeline (11) with the side pipeline of the engine water jacket (21), maintaining a certain engine speed, activating the warm air water pump (14) and the engine water pump, so that the coolant in the battery heating side pipeline (12) and the warm air side pipeline (11) flows through the expansion tank of the engine and then discharges gas, and after the warm air water pump (14) runs for t4 time, activating the WPTC (15) and using the warm air core (18) to heat the cockpit.

8. The method for degassing a heating water channel for a hybrid vehicle according to any one of claims 2 to 7, characterized in that: After the degassing mode is turned on, if the heater water pump (14) reports an idling protection fault during operation, the relay of the heater water pump (14) is disconnected for n seconds and then the relay is closed again.

9. A heating water circuit degassing system for a hybrid vehicle, characterized in that: include: A warm air pipeline (1), the warm air pipeline (1) comprising a warm air side pipeline (11), a battery heating side pipeline (12) being connected in parallel to the warm air pipeline (1), the battery heating side pipeline (12) being connected to the warm air pipeline (1) via an electric three-way valve (13), the electric three-way valve (13) being used to control the flow ratio between the warm air side pipeline (11) and the battery heating side pipeline (12), a warm air core (18) being provided on the warm air side pipeline (11), the warm air core (18) being used to heat the cockpit; An engine pipeline (2), wherein the engine pipeline (2) is connected to the warm air pipeline (1) via an electric four-way valve (16); A battery pipeline (3), wherein the battery pipeline (3) can perform heat exchange with a battery heating side pipeline (12); A refrigerant refrigeration pipeline (4), wherein the refrigerant refrigeration pipeline (4) can perform heat exchange with the battery pipeline (3), a cold air side pipeline (42) is arranged on the refrigerant refrigeration pipeline (4), an evaporator (43) is arranged on the cold air side pipeline (42), and the evaporator (43) is used to cool the cockpit.

10. A hybrid vehicle, characterized in that: It includes the heater water circuit degassing system for hybrid vehicles as described in claim 9.

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