Hybrid electric vehicle coolant-side integrated module and thermal management system

Abstract

A hybrid electric vehicle coolant-side integrated module, which is integrated in a vehicle. The hybrid electric vehicle coolant-side integrated module comprises an expansion tank, a water pump (12), a water valve (11), and a water-water heat exchanger (14) for heating a battery pack, wherein the expansion tank comprises an expansion tank body (5) and a waterway base plate (501) which are in communication with each other, and the water pump (12), the water valve (11), and the water-water heat exchanger (14) for heating the battery pack are all integrated on the waterway base plate (501). The structure design is compact and rational, which is conducive to arrangement and mounting; and the thermal management function modes are diversified, thereby meeting thermal management in various driving modes.

Description

A hybrid vehicle coolant-side integrated module and thermal management system

[0001] This application claims priority to Chinese Patent Application No. 202411316645.6, filed on September 20, 2024, entitled "A Hybrid Vehicle Coolant-Side Integrated Module and Its Thermal Management System", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of hybrid vehicle technology, and in particular to a hybrid vehicle coolant-side integrated module and thermal management system. Background Technology

[0003] Hybrid vehicles are equipped with coolant return lines and thermal management lines, which work together to form a vehicle-wide thermal management system.

[0004] In related technologies, the thermal management system architecture of hybrid vehicles includes multiple water valves, water pumps, and plate heat exchangers, etc. In actual layout, the components are connected in series or in parallel.

[0005] However, the aforementioned thermal management system has a complex architecture and multiple thermal management modes. The thermal management system includes multiple valves, multiple water pumps, water-to-water heat exchangers, expansion tanks, and cryogenic expansion tanks, etc. Each component occupies the space of the hybrid vehicle, and there are multiple fixing devices and multiple connecting pipes between each component. The installation is complicated and there are many connecting pipes, which reduces the compactness of the component installation structure of the hybrid vehicle. Summary of the Invention

[0006] In view of this, in order to solve the above-mentioned technical problems or some of the technical problems, this application provides a hybrid vehicle coolant-side integrated module and thermal management system, which has a compact integrated structure and implements various functional modes.

[0007] On one hand, this application provides a hybrid vehicle coolant-side integrated module, including an expansion tank, a water pump, a water valve, and a water-to-water heat exchanger for heating the battery pack. The expansion tank includes a connected expansion tank body and a water circuit substrate. The water pump, the water valve, and the water-to-water heat exchanger for heating the battery pack are all integrated on the water circuit substrate.

[0008] In one possible implementation, the expansion tank is located on one side of the water circuit substrate, and the water valve, water pump, and water-to-water heat exchanger are located on the other side of the water circuit substrate.

[0009] In one possible implementation, the expansion tank is provided with a wave-damping structure to prevent the formation of bubbles caused by liquid impact.

[0010] In one possible implementation, the expansion tank is provided with a degassing valve, and the water circuit board is provided with a gas outflow channel for leading into the expansion tank and connected to the degassing valve.

[0011] In one possible implementation, the water valve is implemented as a four-way valve.

[0012] In one possible implementation, the expansion chamber includes a high-temperature expansion chamber and a low-temperature expansion chamber, the high-temperature expansion chamber is connected to the low-temperature expansion chamber, the high-temperature expansion chamber is connected to the water circuit substrate, and there is a gap between the low-temperature expansion chamber and the water circuit substrate, within which a battery cooler and an electromagnetic expansion valve assembly are integrated.

[0013] In one possible implementation, the wave-damping structure includes a base plate and a set of tentacles extending upward from the base plate, the base plate having a set of through holes.

[0014] In one possible implementation, the expansion chamber is connected to one end of the water channel substrate, and the port of the gas outflow channel in the water channel substrate is located in the middle of the inner cavity of the water channel substrate.

[0015] On the other hand, a thermal management system is provided, which integrates a hybrid vehicle coolant integration module.

[0016] The hybrid vehicle coolant-side integrated module includes an expansion tank, a water pump, a water valve, and a water-to-water heat exchanger for heating the battery pack. The expansion tank includes a connected expansion tank body and a water circuit board. The water pump, the water valve, and the water-to-water heat exchanger for heating the battery pack are all integrated on the water circuit board. The water valve is implemented as a four-way valve.

[0017] The four-way valve has valve port 1, valve port 2, valve port 3, and valve port 4. Valve port 1 is connected to the engine water circuit of the car, valve port 2 is connected to the water-to-water heat exchanger, valve port 3 is connected to the electric heater of the car through the water pump, and valve port 4 is connected to the heater core of the car. The engine water circuit, the water-to-water heat exchanger, the electric heater, and the heater core are connected by pipelines to form the thermal management system.

[0018] In one possible implementation, the thermal management system implements at least one of the following modes: a first mode, a second mode, a third mode, a fourth mode, a fifth mode, a sixth mode, a seventh mode, and an eighth mode.

[0019] The first mode is implemented in pure EV mode, in which the electric heater heats the passenger compartment. The valve port 3 and the valve port 4 are internally connected, while the valve port 1 and the valve port 2 are closed. The water pump drives the liquid to flow through the electric heater to the warm air core, then to the valve port 4, and then back to the water pump through the valve port 3.

[0020] The second mode is implemented in the pure EV mode where the electric heater heats the battery pack. The valve port 2 and the valve port 3 are internally connected, while the valve port 1 and the valve port 4 are closed. The water pump drives the liquid to flow through the electric heater to the water-to-water heat exchanger, then to the valve port 2, and then back to the water pump through the valve port 3.

[0021] The third mode is implemented in the pure EV mode, in which the electric heater heats the battery pack and the passenger compartment. The valve port 3 is internally connected to the valve ports 2 and 4, and the valve port 1 is closed. The water pump drives the liquid to flow through the electric heater to the water heat exchanger and the heater core, then to the valve ports 2 and 4, and then back to the water pump through the valve port 3.

[0022] The fourth mode is implemented in which the engine heats the passenger compartment when the engine is in working mode. The valve 1 port and the valve 4 port are internally connected, while the valve 2 port and the valve 3 port are closed. The engine's main water pump drives the liquid to flow to the heater core, then to the valve 4 port, and then back to the engine's main water pump through the valve 1 port.

[0023] The fifth mode is implemented in which the engine heats the battery pack in the working mode. The valve 1 port and the valve 2 port are internally connected, while the valve 3 port and the valve 4 port are closed. The engine's main water pump drives the liquid to the water-to-water heat exchanger, then to the valve 2 port, and then back to the engine's main water pump through the valve 1 port.

[0024] The sixth mode is implemented in which the engine heats the crew compartment and the battery pack in the working mode. The valve port 1 is internally connected to the valve port 2 and the valve port 4, and the valve port 3 is closed. The engine's main water pump drives the liquid to the water-to-water heat exchanger and the heater core, then to the valve port 2 and the valve port 4, and then back to the engine's main water pump through the valve port 1.

[0025] The seventh mode is implemented as follows: the engine waste heat heats the battery pack, and the passenger compartment is heated by the electric heater. Valve port 1 and valve port 2 are internally connected. The engine's main water pump drives the liquid to flow to the water-to-water heat exchanger, then to valve port 2, and then back to the engine's main water pump through valve port 1. Valve port 3 and valve port 4 are internally connected. The water pump drives the liquid to flow through the electric heater to the heater core, then to valve port 4, and then back to the water pump through valve port 3.

[0026] The eighth mode is implemented as a filling mode. The valve 1 port and the valve 4 port are internally connected, and the valve 2 port and the valve 3 port are internally connected. The engine's main water pump drives the liquid to flow to the water-water heat exchanger, then to the valve 2 port, then through the valve 3 port back to the water pump, then through the electric heater to the heater core, then from the valve 4 port to the valve 1 port through the high-temperature expansion tank in the expansion tank, and back to the engine's main water pump.

[0027] The hybrid vehicle coolant-side integrated module provided in this application has a reasonable structural design. It integrates components within the high and low temperature system range that are physically close to each other and participate in the system circulation function in the coolant-side system. By replacing water pipes with a coolant plate, it connects water pumps, water valves, water-to-water heat exchangers, battery coolers, high and low temperature expansion tanks, water pipes, and fixed standard parts and brackets into an integrated product. Its integrated structure is compact, which is conducive to layout and installation. Furthermore, it has multiple thermal management function modes to meet the thermal management needs of various driving modes. Attached Figure Description

[0028] The following is a brief explanation of the contents of each of the accompanying drawings and the markings in the drawings:

[0029] Figure 1 is a schematic diagram of the architecture of a thermal management system provided in an exemplary embodiment of this application;

[0030] Figure 2 is a schematic diagram of a hybrid vehicle coolant-side integrated module provided in an exemplary embodiment of this application;

[0031] Figure 3 is an exploded view of a coolant-side integrated module assembly provided in an exemplary embodiment of this application;

[0032] Figure 4 is a schematic diagram of a wave-proof structure provided in an exemplary embodiment of this application;

[0033] Figure 5 is a schematic diagram of a degassing structure provided in an exemplary embodiment of this application.

[0034] In the diagram: 1. High-temperature expansion chamber cover; 2. Low-temperature expansion chamber cover; 3. Bushing; 4. Pad; 5. Expansion chamber body; 501. Water circuit board; 6. Battery cooler; 7. Electromagnetic expansion valve assembly; 8. Low-pressure PT sensor; 9. Thermal insulation sponge; 10. Water valve sealing ring; 11. Water valve; 12. Water pump; 13. Water pump inlet O-ring; 14. Water-to-water heat exchanger; 15. Water pump outlet O-ring; 16. Wiring harness assembly; 17. Bolt; 18. H-sealing ring; 19. Hex bolt; 20. Degassing valve; 21. Degassing valve sealing ring; 22. Anti-surge structure; 23. Gas outflow channel. Detailed Implementation

[0035] The specific implementation of this application will be further described in detail below with reference to the accompanying drawings and through the description of the embodiments.

[0036] As shown in Figures 1 to 5, the hybrid vehicle coolant-side integrated module includes an expansion tank, a water pump 12, a water valve 11, and a water-to-water heat exchanger 14 for heating the battery pack. The expansion tank includes a connected expansion tank body 5 and a water circuit board 501. The water pump 12, the water valve 11, and the water-to-water heat exchanger 14 for heating the battery pack are all integrated on the water circuit board 501.

[0037] This application adopts an integrated approach, combining products within the high and low temperature system range that are physically close to each other and participate in the system circulation function in the coolant side system. A single coolant plate replaces the water pipes, connecting the water pump 12, water valve 11, water-to-water heat exchanger 14, battery cooler 6, high and low temperature expansion tank, water pipes, and fixed standard parts and brackets into an integrated product. Its functions can be fully realized from a distributed layout. This integration reduces the number of individual sub-components such as the water pump 12, water valve 11, water-to-water heat exchanger 14, battery cooler 6, high temperature expansion tank, and low temperature expansion tank. For the entire vehicle, this effectively reduces the number of assemblies and sub-components, significantly reduces weight, optimizes costs, and effectively simplifies layout and manufacturing processes.

[0038] In some embodiments, the expansion tank, battery cooler 6, electromagnetic expansion valve assembly 7, and low-pressure PT sensor 8 are all located on one side of the water circuit board 501, while the water valve 11, water pump 12, and water-to-water heat exchanger 14 are located on the other side of the water circuit board 501. On the one hand, the functions implemented on different sides are clearly defined, and the interconnection and cooperation between the components saves on the piping required for connection. On the other hand, the water circuit board is used as a thermal barrier to reduce the risk of leakage.

[0039] Optionally, there are two water pumps 12, with the water-to-water heat exchanger 14 located between the two water pumps. The water pumps 12, the water-to-water heat exchanger 14, and the water valve 11 are arranged side by side, resulting in a compact structure.

[0040] The expansion tank body 5 and the water channel substrate 501 are integrated into one structure; both the expansion tank body 5 and the water channel substrate 501 are provided with fixing ears, and the fixing ears are provided with bushings 3 and soft pads 4, making the structure stable and reliable.

[0041] Water valve 11 is fixed to water circuit board 501 by water valve sealing ring 10 and bolt 17; one water pump is fixed and sealed by water pump inlet O-ring 13, and another water pump is fixed and sealed by water pump outlet O-ring 15; water valve 11 is fixed and sealed by H sealing ring 18 and hex bolt 19, realizing integrated setting, eliminating the unnecessary water pipe and joint component setting process, and reducing the number of parts used.

[0042] Optionally, the expansion chamber includes a high-temperature expansion chamber and a low-temperature expansion chamber, which are connected together. The high-temperature expansion chamber has a high-temperature expansion chamber cover 1 on top, and the low-temperature expansion chamber has a low-temperature expansion chamber cover 2 on top. The high-temperature expansion chamber is connected to one end of the water circuit board 501, and there is a gap between the low-temperature expansion chamber and the water circuit board 501. A battery cooler and an electromagnetic expansion valve assembly are integrated in the gap. The battery cooler is covered with heat-insulating sponge 9, resulting in a compact structure.

[0043] Optionally, the expansion chamber is provided with a wave-blocking structure 22 to prevent the formation of bubbles caused by liquid impact; preferably, the wave-blocking structure 22 includes a base plate and a set of tentacles extending upward from the base plate, and the base plate is provided with a set of through holes.

[0044] Optionally, the expansion chamber is equipped with a degassing valve 20, which is sealed by a degassing valve sealing ring 21 during installation. The water circuit board 501 is provided with a gas outflow channel 23 that leads into the expansion chamber and is connected to the degassing valve. Furthermore, the expansion chamber and the water circuit board 501 are connected at one end, and the port of the gas outflow channel in the water circuit board 501 is located in the middle of the inner cavity of the water circuit board 501.

[0045] In the above embodiments, the gas outlet port is located in the middle of the inner cavity of the water circuit substrate, corresponding to the area with low flow velocity and high gas content, which shortens the degassing time of the cooler to a certain extent. In addition, the gas outlet port is located on the water circuit substrate, using the water circuit substrate as a guide wall, eliminating the need for additional bends or hoses, thus saving longitudinal space in the overall vehicle layout to a certain extent.

[0046] In the above embodiments, the water circuit substrate has its own gas outflow channel, that is, the degassing path is directly set inside the water circuit substrate, without the need for hoses / connectors, which shortens the degassing circuit to a certain extent.

[0047] In this embodiment, both the expansion tank and the water circuit board are made of PP+GF20 material; the water valve 11 is a four-way valve that can realize at least eight different functional modes (the specific modes are described in detail in the implementation description), the valve core has a stroke of 320°, and the proportional adjustment range can be adjusted up to 60°.

[0048] In this embodiment, the hybrid vehicle coolant-side integrated module mentioned above can be integrated into a thermal management system. The water valve in the hybrid vehicle coolant-side integrated module is implemented as a four-way valve. The four-way valve has valve port 1, valve port 2, valve port 3 and valve port 4. Valve port 1 is connected to the vehicle engine water circuit, valve port 2 is connected to the water-to-water heat exchanger 14, valve port 3 is connected to the vehicle's electric heater through the water pump 12, and valve port 4 is connected to the vehicle's heater core. The engine water circuit, water-to-water heat exchanger, electric heater and heater core are connected by pipelines to form a thermal management system.

[0049] In this embodiment, the vehicle is mainly implemented as a hybrid electric vehicle (HEV). A hybrid electric vehicle refers to a single vehicle platform that is equipped with two or more on-board energy storage devices and power sources, at least one of which is electric energy, and has an energy coupling and management system.

[0050] Optionally, since the operating environment of hybrid vehicles is -40℃ to 125℃, the expansion tank can be designed as a dual-chamber or dual-zone expansion structure. That is, the expansion tank is divided into a high-temperature expansion chamber and a low-temperature expansion chamber. Different expansion chambers are connected to different vehicle structures, such as the high-temperature expansion chamber connected to the engine / motor, and the low-temperature expansion chamber connected to the battery / inverter, etc. This avoids the risk of cold boiling or overheating vapor lock that may occur in the cavity formed by a single expansion tank, and eliminates the cross-flow of air between a single expansion tank and multiple vehicle structures, which may cause pressure fluctuations and reduce the risk of water pump cavitation to a certain extent.

[0051] In addition, to avoid the problem of internal degassing in the integrated system, the module involved in this application is also equipped with a manual venting valve. For manual liquid replenishment, there is no need to add an additional water pipe structure for venting, and the structure is optimized through injection molding. The low temperature expansion tank participates in the circulation throughout the process and has an internal "anti-wave" structure to effectively avoid bubbles caused by liquid impact.

[0052] The thermal management system provided in this application embodiment can realize at least one of the following modes: a first mode, a second mode, a third mode, a fourth mode, a fifth mode, a sixth mode, a seventh mode, and an eighth mode.

[0053] The first mode is implemented as a pure EV mode (Electric Vehicle Mode), in which the electric heater heats the passenger compartment. Valve No. 3 and Valve No. 4 are internally connected, while Valve No. 1 and Valve No. 2 are closed. The water pump drives the liquid to flow through the electric heater to the heater core, then to Valve No. 4, and then back to the water pump through Valve No. 3.

[0054] The second mode is implemented in pure EV mode, in which the electric heater heats the battery pack. Valve No. 2 and Valve No. 3 are internally connected, while Valve No. 1 and Valve No. 4 are closed. The water pump drives the liquid to flow through the electric heater to the water-to-water heat exchanger, then to Valve No. 2, and then back to the water pump through Valve No. 3.

[0055] The third mode is implemented in pure EV mode, in which the electric heater heats the battery pack and passenger compartment. Valve No. 3 is internally connected to valves No. 2 and No. 4, while valve No. 1 is closed. The water pump drives the liquid to flow through the electric heater to the water-to-water heat exchanger and the heater core, then to valves No. 2 and No. 4, and then back to the water pump through valve No. 3.

[0056] The fourth mode is implemented when the engine is in working mode and the engine heats the passenger compartment. Valve 1 and valve 4 are internally connected, while valve 2 and valve 3 are closed. The engine's main water pump drives the liquid to flow to the heater core, then to valve 4, and then back to the engine's main water pump through valve 1.

[0057] The fifth mode is implemented in which the engine heats the battery pack while the engine is in operation. Valve 1 and Valve 2 are internally connected, while Valve 3 and Valve 4 are closed. The engine's main water pump drives the liquid to the water-to-water heat exchanger, then to Valve 2, and then back to the engine's main water pump through Valve 1.

[0058] The sixth mode is implemented in which the engine heats the passenger compartment and battery pack when the engine is in operation. Valve 1 is internally connected to valve 2 and valve 4, while valve 3 is closed. The engine's main water pump drives the liquid to the water-to-water heat exchanger and the heater core, then to valve 2 and valve 4, and then back to the engine's main water pump through valve 1.

[0059] The seventh mode is implemented by heating the battery pack with engine waste heat and heating the passenger compartment with electric heaters. Valve 1 and valve 2 are internally connected. The engine's main water pump drives the liquid to flow to the water-to-water heat exchanger, then to valve 2, and then back to the engine's main water pump through valve 1. Valve 3 and valve 4 are internally connected. The water pump drives the liquid to flow through the electric heater to the heater core, then to valve 4, and then back to the water pump through valve 3.

[0060] The eighth mode is the filling mode. Valve No. 1 and Valve No. 4 are internally connected, and Valve No. 2 and Valve No. 3 are internally connected. The engine's main water pump drives the liquid to flow to the water-water heat exchanger, then to Valve No. 2, then through Valve No. 3 back to the water pump, then through the electric heater to the heater core, then from Valve No. 4 to Valve No. 1 through the high-temperature expansion tank in the expansion tank, and back to the engine's main water pump.

[0061] In the above embodiments, without increasing the number of valves, the three heat sources of the passenger compartment, battery pack and engine can be freely combined through the cooperation of a single four-way valve and two water pumps, thereby reducing hardware costs and further improving the system flexibility of the thermal management system.

[0062] In the above embodiments, the hybrid vehicle adapts to different heating processes when different power sources are working. That is, in pure EV mode, the electric heater is started on demand, and in engine mode, waste heat is used first to heat the vehicle's energy, which reduces the overall energy consumption of the hybrid vehicle and shortens the time required for cold start to a certain extent.

[0063] Figure 2 is a schematic diagram of a hybrid vehicle coolant-side integrated module based on Figure 1 and the bill of materials (within the dashed box) for the dispersion device. The components within the hybrid vehicle coolant-side integrated module shown in Figure 2 work together to achieve all the functions of the thermal management system shown in Figure 1.

[0064] Figure 1 includes a first water pump 100, a second water pump 110, a high-voltage electric heater 120, a high-voltage power battery 130, a water-to-water heat exchanger 140, a low-temperature expansion chamber 150, a high-temperature expansion chamber 160, valve ports 1 to 4 170, an engine heat source 180, a cooler, and an electric heater heat source 190. The first water pump 100 is an electronic water pump serving the battery pack, such as a Battery Electronic Water Pump (B-EWP). The second water pump 110 is an electronic water pump serving the heater core and / or electric heater, such as an HVAC / Heating Electronic Water Pump (H-EWP). The high-voltage electric heater 120 uses high-voltage electricity. The high-voltage power battery 130 refers to a rechargeable energy storage system installed in hybrid vehicles, typically with a rated voltage between 90V and 1000V, used to provide energy to high-voltage components such as the drive motor, air conditioning compressor, and heater. The water-to-water heat exchanger 140 separates high-temperature coolant circuits (e.g., engine, electric drive system) from low-temperature coolant circuits (e.g., battery, motor, or air conditioning system). It facilitates heat exchange through plates or tubing without liquid mixing, achieving functions such as battery preheating, engine preheating recovery, and rapid engine warm-up. The low-temperature expansion chamber 150 and high-temperature expansion chamber 160 are two independent chambers with different functions and temperature levels, integrated within the same expansion chamber housing. The low-temperature expansion chamber 150 primarily serves low-temperature circuits such as the battery pack, motor, and air conditioning system, with a temperature range of 20-50℃. The high-temperature expansion chamber 160 primarily serves high-temperature circuits such as the engine and electric drive system, with a temperature range of 90-110℃. The engine heat source 180 is mainly used in scenarios where residual heat from the cylinder block is utilized after engine startup. The water flow path is primarily from the main water pump to the cylinder block, then to the heater core / water-to-water heat exchanger 140, and back to the engine main water pump, providing functions such as passenger compartment heating, battery preheating, and defrosting. The electric heater heat source 190 is mainly used in scenarios where hybrid vehicles are in pure electric mode or the engine is not running and the high-voltage power battery 130 provides power. The water flow direction is mainly from the electric heater water pump to the electric heater to the heater core / battery heat exchanger and back to the electric heater water pump. It is used to heat the passenger compartment in pure electric mode and to quickly heat the battery at low temperatures.

[0065] It should be noted that, in this embodiment, considering practical application and operability, the coolant-side integrated module does not include the high-voltage electric heater 120, and uses a water circuit substrate (integrated within the expansion body 5) to replace the traditional at least 6 water pipes and 12 clamps. This not only shortens the pipe length in the actual distributed arrangement, but also provides an installation structure for connecting the two water pumps 12, water valves 11, water-to-water heat exchangers 14, battery coolers 6, etc. Furthermore, by eliminating the water pipes and clamps, some components of the water pumps 12 and water valves 11 are also integrated into the water circuit substrate (integrated within the expansion body 5). The structure is replaced by assembling the water pump 12, water valve 11, water-to-water heat exchanger 14, and battery cooler 6 onto the water circuit substrate (integrated within the expansion body 5), and then adding the connecting wiring harness assembly 16 to finally form a complete hybrid vehicle coolant-side integrated module product. This product realizes at least eight modes of function involved in the above embodiments, has all the functions of a distributed layout, and effectively reduces the number of parts. Compared with the scattered layout, it reduces 6 water pipes, 12 clamps, 6 brackets, and optimizes the wiring harness, reducing weight by about 2kg, effectively optimizing the overall vehicle weight and process, and reducing the overall vehicle cost.

[0066] Figure 3 is an exploded view of a coolant-side integrated module assembly provided in an exemplary embodiment of this application, showing the overall structure of the coolant-side integrated module. In Figure 3, the internal structure of the water channel substrate (integrated within the expansion body 5) is relatively complex. Its components are sealed by heating plate welding using plastic injection molding. The internal flow channels connect the two components according to the pipelines in the heat pipe system architecture schematic diagram. Moreover, its internal structure will vary depending on different schematic diagrams. This schematic diagram is intended to illustrate the core invention of this application, namely the design and fabrication of this water channel substrate. This integrated approach can be implemented in similar thermal management system architectures.

[0067] Figure 4 is a schematic diagram of an exemplary embodiment of the present application of an anti-wave structure. It shows that inside the low-temperature cooling expansion box, there is an anti-wave structure 22 that prevents water from rolling and impacting the inner wall, thus preventing foam generation. The structure is an independent unit and is assembled and used with the internal expansion structure. The hybrid vehicle coolant side integrated module provided in the embodiment of the present application has been confirmed to have a good effect on the "anti-wave" control of the fluid in practical applications. It has an opening at the bottom and long "tentacles" at the mating part. The opening is to decompose the impact of water, and the "tentacles" are used to absorb the vibration caused by the impact.

[0068] Figure 5 is a schematic diagram of a degassing structure provided in an exemplary embodiment of this application. It shows a degassing structure inside the module. The red part is the gas outflow channel. Because the hybrid vehicle coolant measurement integrated module provided in this embodiment is large in size and has a long channel, it is difficult for the gas to be discharged by itself once it is squeezed inside. The gas outflow channel 23 is set on one side of the high temperature expansion tank to facilitate after-sales maintenance operations.

[0069] The hybrid vehicle coolant-side integrated module of this application has a reasonable structural design. It integrates the high and low temperature system components that are physically close to each other and participate in the system circulation function in the coolant-side system. By replacing the water pipes with a coolant plate, it connects the water pump, water valve, water-to-water heat exchanger, battery cooler, high and low temperature expansion tank, water pipes and fixed standard parts and brackets into an integrated product. Its integrated setting is compact and easy to arrange and install. Moreover, it has multiple thermal management function modes to meet the thermal management needs of various driving modes.

[0070] The above description is only a preferred embodiment of this application. The above technical features can be arbitrarily combined to form multiple embodiment schemes of this application.

[0071] The present application has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present application is not limited to the above-described manner. Any non-substantial improvements made using the concept and technical solution of the present application, or the direct application of the concept and technical solution of the present application to other occasions without modification, are all within the protection scope of the present application.

Claims

1. A hybrid vehicle coolant side integrated module integrated in a vehicle, the hybrid vehicle coolant side integrated module comprising an expansion tank, a water pump, a water valve, and a water-water heat exchanger for heating of a battery pack, wherein, The expansion tank includes a connected expansion tank body and a water circuit base plate. The water pump, the water valve, and the water-to-water heat exchanger for heating the battery pack are all integrated on the water circuit base plate.

2. The hybrid vehicle coolant-side integrated module according to claim 1, wherein the expansion tank is located on one side of the water circuit substrate, and the water valve, the water pump, and the water-to-water heat exchanger are located on the other side of the water circuit substrate.

3. The hybrid vehicle coolant-side integrated module according to claim 1 or 2, wherein the expansion tank is provided with a wave-prevention structure to prevent air bubbles from being generated due to liquid impact.

4. The hybrid vehicle coolant-side integrated module according to any one of claims 1 to 3, wherein the expansion tank is provided with a degassing valve, and the water circuit board is provided with a gas outflow channel for leading into the expansion tank and connected to the degassing valve.

5. The hybrid vehicle coolant-side integrated module according to any one of claims 1 to 4, wherein the water valve is implemented as a four-way valve.

6. The hybrid vehicle coolant-side integrated module according to any one of claims 1 to 5, wherein the expansion tank includes a high-temperature expansion tank and a low-temperature expansion tank, the high-temperature expansion tank is connected to the low-temperature expansion tank, the high-temperature expansion tank is connected to one end of the water circuit substrate, a gap exists between the low-temperature expansion tank and the water circuit substrate, and a battery cooler and an electromagnetic expansion valve assembly are integrated in the gap.

7. The hybrid vehicle coolant-side integrated module according to any one of claims 1 to 6, wherein the anti-wave structure includes a base plate and a set of tentacles extending upward from the base plate, and the base plate is provided with a set of through holes.

8. The hybrid vehicle coolant-side integrated module according to any one of claims 1 to 7, wherein the expansion tank and one end of the water circuit substrate are connected, and the port of the gas outflow channel in the water circuit substrate is provided in the middle of the inner cavity of the water circuit substrate.

9. A thermal management system, wherein, The thermal management system integrates a hybrid vehicle coolant integration module. The hybrid vehicle coolant-side integrated module includes an expansion tank, a water pump, a water valve, and a water-to-water heat exchanger for heating the battery pack. The expansion tank includes a connected expansion tank body and a water circuit board. The water pump, the water valve, and the water-to-water heat exchanger for heating the battery pack are all integrated on the water circuit board. The water valve is implemented as a four-way valve. The four-way valve has valve port 1, valve port 2, valve port 3, and valve port 4. Valve port 1 is connected to the engine water circuit of the car, valve port 2 is connected to the water-to-water heat exchanger, valve port 3 is connected to the electric heater of the car through the water pump, and valve port 4 is connected to the heater core of the car. The engine water circuit, the water-to-water heat exchanger, the electric heater, and the heater core are connected by pipelines to form the thermal management system.

10. The thermal management system according to claim 9, wherein the thermal management system implements at least one of the first mode, the second mode, the third mode, the fourth mode, the fifth mode, the sixth mode, the seventh mode, and the eighth mode; The first mode is implemented in pure EV mode, in which the electric heater heats the passenger compartment. The valve port 3 and the valve port 4 are internally connected, while the valve port 1 and the valve port 2 are closed. The water pump drives the liquid to flow through the electric heater to the warm air core, then to the valve port 4, and then back to the water pump through the valve port 3. The second mode is implemented in the pure EV mode where the electric heater heats the battery pack. The valve port 2 and the valve port 3 are internally connected, while the valve port 1 and the valve port 4 are closed. The water pump drives the liquid to flow through the electric heater to the water-to-water heat exchanger, then to the valve port 2, and then back to the water pump through the valve port 3. The third mode is implemented in the pure EV mode, in which the electric heater heats the battery pack and the passenger compartment. The valve port 3 is internally connected to the valve ports 2 and 4, and the valve port 1 is closed. The water pump drives the liquid to flow through the electric heater to the water heat exchanger and the heater core, then to the valve ports 2 and 4, and then back to the water pump through the valve port 3. The fourth mode is implemented in which the engine heats the passenger compartment when the engine is in working mode. The valve 1 port and the valve 4 port are internally connected, while the valve 2 port and the valve 3 port are closed. The engine's main water pump drives the liquid to flow to the heater core, then to the valve 4 port, and then back to the engine's main water pump through the valve 1 port. The fifth mode is implemented in which the engine heats the battery pack in the working mode. The valve 1 port and the valve 2 port are internally connected, while the valve 3 port and the valve 4 port are closed. The engine's main water pump drives the liquid to the water-to-water heat exchanger, then to the valve 2 port, and then back to the engine's main water pump through the valve 1 port. The sixth mode is implemented in which the engine heats the crew compartment and the battery pack in the working mode. The valve port 1 is internally connected to the valve port 2 and the valve port 4, and the valve port 3 is closed. The engine's main water pump drives the liquid to the water-to-water heat exchanger and the heater core, then to the valve port 2 and the valve port 4, and then back to the engine's main water pump through the valve port 1. The seventh mode is implemented as follows: the engine waste heat heats the battery pack, and the passenger compartment is heated by the electric heater. Valve port 1 and valve port 2 are internally connected. The engine's main water pump drives the liquid to flow to the water-to-water heat exchanger, then to valve port 2, and then back to the engine's main water pump through valve port 1. Valve port 3 and valve port 4 are internally connected. The water pump drives the liquid to flow through the electric heater to the heater core, then to valve port 4, and then back to the water pump through valve port 3. The eighth mode is implemented as a filling mode. The valve 1 port and the valve 4 port are internally connected, and the valve 2 port and the valve 3 port are internally connected. The engine's main water pump drives the liquid to flow to the water-water heat exchanger, then to the valve 2 port, then through the valve 3 port back to the water pump, then through the electric heater to the heater core, then from the valve 4 port to the valve 1 port through the high-temperature expansion tank in the expansion tank, and back to the engine's main water pump.

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