New energy bus integrated thermal management system and new energy bus

Abstract

The invention provides an integrated heat management system for a new energy bus. The integrated heat management system comprises an air conditioner circulation pipeline, a motor electric control heat dissipation pipeline and a battery liquid cooling pipeline. The motor electric control heat dissipation pipeline comprises a first heat dissipation branch and a second heat dissipation branch which are arranged in parallel, the first heat dissipation branch is provided with a motor electric control radiator, and the motor electric control radiator is arranged at a condensate fan of the air conditioner circulation pipeline; the second heat dissipation branch and the battery liquid cooling pipeline exchange heat with a refrigerant branch of the air conditioner circulation pipeline through a heat exchanger. The motor electric control radiator is arranged at the condensate fan, so that the production cost of the whole vehicle is reduced; and the motor electric control heat dissipation pipeline and the battery liquid cooling pipeline can exchange heat with a refrigerant branch of the air conditioner circulation pipeline at the heat exchanger, waste heat recovery is achieved, and the utilization efficiency of energy is improved. The invention further provides the new energy bus adopting the new energy bus integrated thermal management system.

Description

Technical Field

[0001] The present invention belongs to the technical field of air-conditioning for new energy buses, and in particular, relates to an integrated thermal management system for new energy buses and a new energy bus. Background Art

[0002] Traditional buses rely on fossil fuels such as gasoline and diesel to provide power, and the exhaust gas they emit has become one of the main causes of environmental pollution. Therefore, energy-saving and environmentally friendly new energy buses are increasingly favored by the government and society.

[0003] During the operation of existing new energy buses, the motors, electronic controls and batteries will generate a large amount of heat. For the heat dissipation of the motors, electronic controls and batteries, on the one hand, separate heat dissipation systems need to be set up respectively, which leads to high production costs of the whole vehicle. On the other hand, in the existing technology, the heat dissipated by the motors, electronic controls and batteries cannot be recycled in time, resulting in energy waste.

[0004] In view of this, the present invention is proposed. Summary of the invention

[0005] One purpose of the present invention is to overcome the shortcomings of the prior art and provide an integrated thermal management system for new energy buses, in which the motor electronic control radiator is integrated into the condensing fan, thereby saving the production cost of the entire vehicle. On the other hand, the motor electronic control heat dissipation pipeline and the battery liquid cooling pipeline can also exchange heat with the refrigerant branch of the air-conditioning circulation pipeline, thereby improving the energy utilization efficiency.

[0006] Another object of the present invention is to provide a new energy bus adopting the above-mentioned new energy bus integrated thermal management system.

[0007] In order to achieve the first invention objective, the present invention adopts the following technical solution:

[0008] An integrated thermal management system for new energy buses, including air conditioning circulation pipelines, motor electronic control heat dissipation pipelines and battery liquid cooling pipelines;

[0009] The motor electronically controlled heat dissipation pipeline comprises a first heat dissipation branch and a second heat dissipation branch arranged in parallel, the first heat dissipation branch is provided with a motor electronically controlled radiator, and the motor electronically controlled radiator is arranged at the condensing fan of the air conditioning circulation pipeline;

[0010] The second heat dissipation branch and the battery liquid cooling pipeline both exchange heat with the refrigerant branch of the air conditioning circulation pipeline through a heat exchanger.

[0011] Furthermore, the refrigerant main circuit of the air-conditioning circulation pipeline includes a compressor, a four-way valve, a condenser and an evaporator connected as a circulation pipeline, and one end of the refrigerant branch is connected to the input end of the compressor, and the other end is connected to the output end of the condenser or evaporator that performs condensation.

[0012] Furthermore, a first electronic expansion valve is provided between the condenser and the evaporator of the refrigerant main circuit;

[0013] The refrigerant branch is provided with a second electronic expansion valve, and the second electronic expansion valve is arranged before the heat exchanger.

[0014] Furthermore, the refrigerant branch also includes a first one-way valve and a second one-way valve, the first one-way valve is used to control the on-off of the pipeline between the evaporator and the second electronic expansion valve, and the second one-way valve is used to control the on-off of the pipeline between the condenser and the second electronic expansion valve.

[0015] Furthermore, the main circuit of the motor electronic control heat dissipation pipeline is provided with an electronic control, a motor and a first water pump in sequence, and the pipeline between the motor and the first water pump is also connected to the output end of the first water tank;

[0016] The output end of the first water pump is connected to the first heat dissipation branch and the second heat dissipation branch respectively, and the output ends of the first heat dissipation branch and the second heat dissipation branch are both connected to the input end of the electronic control.

[0017] Furthermore, the first heat dissipation pipeline is at least provided with a first solenoid valve to control the on-off of the pipeline; and the second heat dissipation pipeline is at least provided with a second solenoid valve to control the on-off of the pipeline.

[0018] Furthermore, the battery liquid cooling circuit includes a battery, a second water tank and a second water pump, and the output end of the second water tank is arranged between the battery and the input end of the second water pump.

[0019] Furthermore, the pipeline between the output end of the second water pump and the input end of the battery exchanges heat with the refrigerant branch at a heat exchanger.

[0020] Furthermore, the heat exchanger is a plate heat exchanger.

[0021] In order to achieve the second invention objective, the present invention adopts the following technical solution:

[0022] A new energy bus adopts the above-mentioned new energy bus integrated thermal management system.

[0023] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0024] The present invention arranges the motor electronically controlled radiator at the condensing fan, and ensures its heat dissipation through the condensing fan, thereby reducing the production cost of the whole vehicle, and at the same time saving the rear space of the new energy bus. The whole vehicle can have a short rear overhang or no rear overhang; on the other hand, the motor electronically controlled heat dissipation pipeline and the battery liquid cooling pipeline can both exchange heat with the refrigerant branch of the air-conditioning circulation pipeline at the heat exchanger, realizing waste heat recovery and improving energy utilization efficiency.

[0025] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0027] Figure 1 It is a schematic diagram of the process of the first embodiment of the present invention;

[0028] Figure 2 is a schematic diagram of the process flow when the first heat dissipation branch in the second embodiment of the present invention works;

[0029] Figure 3 It is a schematic diagram of the process flow when the second heat dissipation branch in the second embodiment of the present invention is working.

[0030] Description of the main components in the figure: 1. Compressor; 2. Four-way valve; 3. Condenser; 4. Motor-controlled radiator; 5. Evaporator; 6. Gas-liquid separator; 7. First electronic expansion valve; 8. First non-return valve; 9. Second non-return valve; 10. First ball valve; 11. First solenoid valve; 12. Second ball valve; 13. Second solenoid valve; 14. First water pump; 15. Motor; 16. Electronic control; 17. First water tank; 18. Battery; 19. Second water tank; 20. Second water pump; 21. Second electronic expansion valve; 22. Heat exchanger; 23. Air conditioning circulation pipeline; 24. Motor-controlled heat dissipation pipeline; 25. Battery liquid cooling pipeline; 26. First heat dissipation branch; 27. Second heat dissipation branch; 28. Refrigerant main line; 29. ​​Refrigerant branch; 30. Condensing fan.

[0031] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0033] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] During the operation of existing new energy buses, the motor 15, the electronic control 16 and the battery 18 will generate a large amount of heat. For the heat dissipation of the motor 15, the electronic control 16 and the battery 18, on the one hand, separate heat dissipation systems need to be set up respectively, resulting in a high production cost of the whole vehicle; on the other hand, the heat dissipated by the motor 15, the electronic control 16 and the battery 18 cannot be recycled in time, resulting in energy waste.

[0036] In view of this, if Figure 1-3 As shown, the present invention provides an integrated thermal management system for a new energy bus, including an air conditioning circulation pipeline 23, a motor electronic control heat dissipation pipeline 24 and a battery liquid cooling pipeline 25, wherein the motor electronic control heat dissipation pipeline 24 includes a first heat dissipation branch 26 and a second heat dissipation branch 27 arranged in parallel, and a motor electronic control radiator 4 is arranged on the first heat dissipation branch 26. In order to save the production cost of the whole vehicle, the present invention arranges the motor electronic control radiator 4 at the condensing fan 30 of the air conditioning circulation pipeline 23, and uses the condensing fan 30 for heat dissipation, thereby reducing the production cost of the whole vehicle and saving the rear space at the same time, and the whole vehicle can have a short rear overhang or a zero rear overhang;

[0037] Considering that the temperature of the motor electronically controlled radiator 4 is higher than the temperature of the condenser 3 which performs the condensation function, in order to avoid affecting the heat dissipation of the condenser 3, the condensation fan 30 is arranged on one side of the motor electronically controlled radiator 4 in the present invention. When the condensation fan 30 is working, the outside air flows under the suction of the condensation fan 30 and exchanges heat with the condenser 3 and the motor electronically controlled radiator 4 during the flow process. Specifically, the outside air passes through the condenser 3 and the motor electronically controlled radiator 4 in sequence, and then is discharged by the condensation fan 30.

[0038] The second heat dissipation branch 27 and the battery liquid cooling pipeline 25 both exchange heat with the refrigerant branch 29 of the air conditioning circulation pipeline 23 through the heat exchanger 22. The refrigerant in the refrigerant branch 29 absorbs heat and evaporates at the heat exchanger 22, and then flows into the compressor 1 of the air conditioning circulation pipeline 23. In this process, the heat in the motor electronic control heat dissipation pipeline 24 and the battery liquid cooling pipeline 25 is reabsorbed by the refrigerant, realizing the utilization of waste heat and improving the utilization efficiency of energy.

[0039] Furthermore, considering that in summer, the target water temperature range of the circulating water in the battery liquid cooling pipeline 25 is 10°C-20°C, while the target water temperature range of the circulating water in the motor electronic control heat dissipation pipeline 24 is less than 65°C, that is, compared with the circulating water temperature in the battery liquid cooling pipeline 25, the circulating water temperature in the motor electronic control heat dissipation pipeline 24 is about 35°C higher. In order to avoid the higher temperature of the circulating water in the motor electronic control heat dissipation pipeline 24 affecting the heat dissipation effect of the battery 18, the present invention sets the motor electronic control heat dissipation pipeline 24 and the battery liquid cooling pipeline 25 as two independent circulation pipelines.

[0040] The refrigerant main circuit 28 of the air conditioning circulation pipeline 23 includes a compressor 1, a four-way valve 2, a condenser 3 and an evaporator 5 connected as a circulation pipeline, and one end of the refrigerant branch 29 is connected to the input end of the compressor 1, and the other end is connected to the output end of the condenser 3 or the evaporator 5 for condensation. For example, when the air conditioning system needs to cool, the refrigerant condenses and releases heat at the condenser 3, and evaporates and absorbs heat at the evaporator 5. At this time, the other end of the refrigerant branch 29 is connected to the output end of the condenser 3; when the air conditioning system needs to heat, under the action of the four-way valve 2, the flow direction of the refrigerant changes. After the refrigerant flows out of the compressor 1, it first flows through the evaporator 5, condenses and releases heat at the evaporator 5, and then flows through the condenser 3, evaporates and absorbs heat at the condenser 3, and finally flows back into the compressor 1. At this time, the other end of the refrigerant branch 29 is connected to the output end of the evaporator 5.

[0041] Furthermore, in the present invention, a gas-liquid separator 6 is also provided at the input end of the compressor 1 to protect the compressor 1 and prevent the refrigerant flowing into the compressor 1 from carrying too many liquid droplets and causing damage to the compressor 1 .

[0042] Furthermore, a first electronic expansion valve 7 is provided between the condenser 3 and the evaporator 5 of the refrigerant main circuit 28, and a second electronic expansion valve 21 is provided in the refrigerant branch circuit 29, and the second electronic expansion valve 21 is provided before the heat exchanger 22. The refrigerant in the refrigerant branch circuit 29 absorbs heat and evaporates at the heat exchanger 22 after the throttling action of the second electronic expansion valve 21, and finally flows back into the compressor 1 through the gas-liquid separator 6 for the next cycle.

[0043] Since the other end of the refrigerant branch 29 needs to be set at the output end of the condenser 3 or the evaporator 5 for condensation, the refrigerant branch 29 in the present invention also includes a first one-way valve 8 and a second one-way valve 9, wherein the first one-way valve 8 is used to control the on-off of the pipeline between the evaporator 5 and the second electronic expansion valve 21, and the second one-way valve 9 is used to control the on-off of the pipeline between the condenser 3 and the second electronic expansion valve 21. When the air conditioner is cooling, the first one-way valve 8 is closed, the second one-way valve 9 is opened, and the refrigerant flows into the refrigerant branch 29 through the second one-way valve 9; when the air conditioner is heating, the first one-way valve 8 is opened, the second one-way valve 9 is closed, and the refrigerant flows into the refrigerant branch 29 through the first one-way valve 8.

[0044] The main circuit of the motor electronic control heat dissipation pipeline 24 is sequentially provided with the electronic control 16, the motor 15 and the first water pump 14. The pipeline between the motor 15 and the first water pump 14 is also connected to the output end of the first water tank 17. The first water tank 17 is used to replenish the circulating water in the motor electronic control heat dissipation pipeline 24.

[0045] The output end of the first water pump 14 is connected to the first heat dissipation branch 26 and the second heat dissipation branch 27 respectively. The output ends of the first heat dissipation branch 26 and the second heat dissipation branch 27 are both connected to the input end of the electronic control 16 to form a cycle.

[0046] Furthermore, at least a first electromagnetic valve 11 is provided on the first heat dissipation branch 26 to control the on-off of the pipeline, and at least a second electromagnetic valve 13 is provided on the second heat dissipation branch 27 to control the on-off of the pipeline. Furthermore, a first ball valve 10 is also provided on the first heat dissipation branch 26 to control the flow of circulating water flowing through the first heat dissipation branch 26, and a second ball valve 12 is also provided on the second heat dissipation branch 27 to control the flow of circulating water flowing through the second heat dissipation branch 27.

[0047] In the present invention, the first solenoid valve 11 and the second solenoid valve 13 can be opened at the same time. At this time, the first heat dissipation branch 26 and the second heat dissipation branch 27 are both working. The motor electronically controlled radiator 4 of the first heat dissipation branch 26 dissipates heat under the action of the condensing fan 30, and the circulating water in the second heat dissipation branch 27 exchanges heat with the refrigerant branch 29 at the heat exchanger 22, thereby fully ensuring the heat dissipation effect of the motor electronically controlled heat dissipation pipeline 24.

[0048] The battery liquid cooling circuit 25 includes a battery 18 , a second water tank 19 and a second water pump 20 , wherein the output end of the second water tank 19 is arranged between the battery 18 and the input end of the second water pump 20 to replenish the circulating water of the battery liquid cooling circuit 25 .

[0049] The pipeline between the output end of the second water pump 20 and the input end of the battery 18 exchanges heat with the refrigerant branch 29 at the heat exchanger 22. The circulating water in the battery liquid cooling pipeline 25 absorbs heat from the refrigerant in the refrigerant branch 29 at the heat exchanger 22 and flows back to the input end of the battery 18 to form a cycle.

[0050] Furthermore, the heat exchanger 22 of the present invention is a plate heat exchanger.

[0051] Embodiment 1

[0052] like Figure 1 As shown, in this embodiment, the air conditioner is in cooling mode, and the condenser 3 plays a condensing role. The refrigerant is compressed by the compressor 1 and enters the condenser 3 through the four-way valve 2. At this time, the first one-way valve 8 is closed and the second one-way valve 9 is opened.

[0053] A part of the refrigerant flowing out of the condenser 3 enters the evaporator 5 through the first electronic expansion valve 7, absorbs heat and evaporates at the evaporator 5, and the outside air of the evaporator 5 becomes cold air and is sent into the vehicle compartment. The refrigerant flowing out of the evaporator 5 flows back to the compressor 1 through the four-way valve 2 and the gas-liquid separator 6 for the next cycle;

[0054] Another part of the refrigerant enters the refrigerant branch 29 through the second one-way valve 9, flows into the heat exchanger 22 for heat exchange after the throttling effect of the second electronic expansion valve 21, and the refrigerant after absorbing heat flows back to the compressor 1 through the gas-liquid separator 6 for the next cycle. In this process, the circulating water in the battery liquid cooling pipeline 25 absorbs heat and is pumped into the battery 18 again by the second water pump 20 for the next cycle.

[0055] In this embodiment, the motor electronic control heat dissipation pipeline 24 dissipates heat through the first heat dissipation branch 26, that is, the first solenoid valve 11 is opened, the second solenoid valve 13 is closed, and the circulating water enters the motor electronic control radiator 4 through the first solenoid valve 11, dissipates heat under the action of the condensing fan 30, and then flows back to the electronic control 16 along the first heat dissipation branch 26 for the next cycle.

[0056] When the new energy bus is overloaded or the external ambient temperature is high and the first heat dissipation branch 26 cannot dissipate heat in time, the second solenoid valve 13 is opened. At this time, the first heat dissipation branch 26 and the second heat dissipation branch 27 are both working. The circulating water in the second heat dissipation branch 27 exchanges heat with the refrigerant branch 29 at the heat exchanger 22. The cooled circulating water flows back to the electronic control 16 for the next cycle.

[0057] In this embodiment, when the first solenoid valve 11 and the second solenoid valve 13 are both opened, the flow rate of the circulating water flowing through the first heat dissipation branch 26 and the second heat dissipation branch 27 is controlled by the first ball valve 10 and the second ball valve 12 .

[0058] Embodiment 2

[0059] like Figure 2 and Figure 3As shown, in this embodiment, the air conditioner operates in heating mode, the evaporator 5 plays a condensing role, and the refrigerant is compressed by the compressor 1 and enters the evaporator 5 through the four-way valve 2. The refrigerant condenses and releases heat in the evaporator 5. The temperature of the external air of the evaporator 5 rises, becomes hot air and is sent into the vehicle compartment. At this time, the first one-way valve 8 is opened and the second one-way valve 9 is closed.

[0060] A part of the refrigerant flowing out of the evaporator 5 enters the condenser 3 through the first electronic expansion valve 7, absorbs heat and evaporates in the condenser 3, and then flows back to the compressor 1 through the four-way valve 2 and the gas-liquid separator 6 for the next cycle;

[0061] The other part of the refrigerant flowing out of the evaporator 5 enters the refrigerant branch 29 through the first non-return valve 8, and exchanges heat with the battery liquid cooling pipeline 25 at the heat exchanger 22 after the throttling effect of the second electronic expansion valve 21. The refrigerant after absorbing heat re-enters the compressor 1 through the gas-liquid separator 6 for the next cycle. In this process, the circulating water in the battery liquid cooling pipeline 25 absorbs heat and is pumped into the battery 18 again by the second water pump 20 for the next cycle.

[0062] In this embodiment, the first heat dissipation branch 26 of the motor electronically controlled heat dissipation pipeline 24 is working, the first solenoid valve 11 is opened, and the second solenoid valve 13 is closed. In addition to accelerating the heat dissipation of the motor electronically controlled radiator 4 under the action of the condensing fan 30, since the condenser 3 plays an evaporation role at this time, the refrigerant therein evaporates and absorbs heat at the condenser 3, which can also accelerate the heat dissipation of the motor electronically controlled radiator 4, and at the same time, it can also realize the utilization of waste heat and improve the utilization efficiency of energy.

[0063] Alternatively, in this embodiment, the second heat dissipation branch 27 of the motor electronic control heat dissipation pipeline 24 is working, at which time the first solenoid valve 11 is closed and the second solenoid valve 13 is opened. When the circulating water in the second heat dissipation branch 27 flows through the heat exchanger 22, the refrigerant in the refrigerant branch 29 absorbs heat, realizing waste heat utilization, and then the circulating water flows back to the electronic control 16 for the next cycle.

[0064] In this embodiment, the first heat dissipation branch 26 and the second heat dissipation branch 27 can also work simultaneously. At this time, the first solenoid valve 11 and the second solenoid valve 13 are both opened, and the flow rate of circulating water flowing through the first heat dissipation branch 26 and the second heat dissipation branch 27 is controlled by the opening of the first ball valve 10 and the second ball valve 12.

[0065] The air conditioner in the present invention can also operate in cooling or heating mode alone. At this time, the motor electronic control heat dissipation pipeline 24 and the battery liquid cooling pipeline 25 are not working, and the refrigerant branch 29 at the heat exchanger 22 cannot exchange heat. Therefore, the first one-way valve 8 and the second one-way valve 9 are both closed, and the refrigerant is circulated only through the refrigerant main line 28.

[0066] Or when only the motor electronic control heat dissipation pipeline 24 is working, since the refrigerant branch 29 is not working, heat exchange cannot be performed at the heat exchanger 22. At this time, the first solenoid valve 11 is opened, the second solenoid valve 13 is closed, and the first heat dissipation branch 26 is working. Due to the action of the condensing fan 30, the circulating water in the first heat dissipation branch 26 accelerates heat dissipation at the motor electronic control radiator 4, and then flows back to the electronic control 16 for the next cycle.

[0067] The present invention also provides a new energy bus adopting the above-mentioned new energy bus integrated thermal management system. By arranging the motor electronic control radiator 4 at the condensing fan 30, the production cost of the whole vehicle is reduced, and at the same time, the rear space of the new energy bus is saved, and the whole vehicle can have a short rear overhang or no rear overhang; on the other hand, the motor electronic control heat dissipation pipeline 24 and the battery liquid cooling pipeline 25 can both exchange heat with the refrigerant branch 29 of the air-conditioning circulation pipeline 23 at the heat exchanger 22, thereby realizing waste heat recovery and improving energy utilization efficiency.

[0068] The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation scheme in the above embodiment can also be further combined or replaced. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of the solution of the present invention.

Claims

1. An integrated thermal management system for new energy buses, characterized in that: Including air conditioning circulation pipeline, motor electronic control heat dissipation pipeline and battery liquid cooling pipeline; The motor electronically controlled heat dissipation pipeline comprises a first heat dissipation branch and a second heat dissipation branch arranged in parallel, the first heat dissipation branch is provided with a motor electronically controlled radiator, and the motor electronically controlled radiator is arranged at the condensing fan of the air conditioning circulation pipeline; The second heat dissipation branch and the battery liquid cooling pipeline both exchange heat with the refrigerant branch of the air conditioning circulation pipeline through a heat exchanger.

2. The integrated thermal management system for new energy buses according to claim 1 is characterized in that: The refrigerant main circuit of the air-conditioning circulation pipeline includes a compressor, a four-way valve, a condenser and an evaporator connected as a circulation pipeline. One end of the refrigerant branch is connected to the input end of the compressor, and the other end is connected to the output end of the condenser or evaporator for condensation.

3. The integrated thermal management system for new energy buses according to claim 2 is characterized in that: A first electronic expansion valve is provided between the condenser and the evaporator of the refrigerant main circuit; The refrigerant branch is provided with a second electronic expansion valve, and the second electronic expansion valve is arranged before the heat exchanger.

4. The integrated thermal management system for new energy buses according to claim 3 is characterized in that: The refrigerant branch also includes a first one-way valve and a second one-way valve, wherein the first one-way valve is used to control the on-off of the pipeline between the evaporator and the second electronic expansion valve, and the second one-way valve is used to control the on-off of the pipeline between the condenser and the second electronic expansion valve.

5. The integrated thermal management system for new energy buses according to claim 1 is characterized in that: The main circuit of the motor electronic control heat dissipation pipeline is provided with an electronic control, a motor and a first water pump in sequence, and the pipeline between the motor and the first water pump is also connected to the output end of the first water tank; The output end of the first water pump is connected to the first heat dissipation branch and the second heat dissipation branch respectively, and the output ends of the first heat dissipation branch and the second heat dissipation branch are both connected to the input end of the electronic control.

6. The integrated thermal management system for new energy buses according to claim 5 is characterized in that: The first heat dissipation pipeline is at least provided with a first solenoid valve to control the on-off of the pipeline; the second heat dissipation pipeline is at least provided with a second solenoid valve to control the on-off of the pipeline.

7. The integrated thermal management system for new energy buses according to claim 1 is characterized in that: The battery liquid cooling circuit includes a battery, a second water tank and a second water pump, wherein an output end of the second water tank is arranged between the battery and an input end of the second water pump.

8. The integrated thermal management system for new energy buses according to claim 7 is characterized in that: The pipeline between the output end of the second water pump and the input end of the battery exchanges heat with the refrigerant branch at the heat exchanger.

9. An integrated thermal management system for new energy buses according to any one of claims 1 to 8, characterized in that: The heat exchanger is a plate heat exchanger.

10. A new energy bus, characterized in that: An integrated thermal management system for new energy buses is adopted as described in any one of claims 1 to 9.

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