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

Hybrid vehicle cooling liquid side integrated module and thermal management system

[0001] The present application claims priority to the Chinese patent application No. 202411316645.6, filed on September 20, 2024, and entitled "Hybrid vehicle cooling liquid side integrated module and thermal management system", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of hybrid vehicles, in particular to a hybrid vehicle cooling liquid side integrated module and thermal management system. BACKGROUND

[0003] The hybrid vehicle is provided with a cooling liquid return pipeline and a thermal management pipeline, and the two pipelines cooperate to form a vehicle-level thermal management system.

[0004] In the related art, the hybrid vehicle thermal management system architecture includes multiple water valves, water pumps, plate heat exchangers, etc. In the actual arrangement process, the components are connected in series or in parallel.

[0005] However, the above-mentioned thermal management system architecture is complex and has multiple thermal management modes. The thermal management system includes multiple valves, multiple water pumps, water-water heat exchangers, expansion tanks, and low-temperature expansion tanks, etc. Each component occupies the use space of the hybrid vehicle, and there are multiple fixing devices and multiple connecting pipelines between each component. The installation is complex and there are many connecting pipelines, which reduces the compactness of the component installation structure of the hybrid vehicle. SUMMARY

[0006] In view of this, in order to solve the above-mentioned or part of the technical problems, the present application provides a hybrid vehicle cooling liquid side integrated module and thermal management system, which has a compact integrated arrangement structure and multiple function modes.

[0007] In one aspect, the present application provides a hybrid vehicle cooling liquid side integrated module, which includes an expansion tank, a water pump, a water valve, and a water-water heat exchanger for heating a battery pack. The expansion tank includes an expansion tank body and a water route substrate connected in communication. The water pump, the water valve, and the water-water heat exchanger for heating the battery pack are integrated on the water route substrate.

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

[0009] In one possible implementation, the expansion tank body is provided with a wave-preventing structure for avoiding bubble generation caused by liquid impact.

[0010] In a possible implementation, the expansion tank is provided with a degassing valve, and the water circuit base plate is provided with a gas outlet channel connected to the degassing valve and leading into the expansion tank.

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

[0012] In a possible implementation, the expansion tank comprises 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 the water circuit base plate, and a gap is formed between the low-temperature expansion tank and the water circuit base plate, and a battery cooler and an electromagnetic expansion valve assembly are integrated in the gap.

[0013] In a possible implementation, the wave-preventing structure comprises a bottom plate and a group of antennae extending upward from the bottom plate, and the bottom plate is provided with a group of through holes.

[0014] In a possible implementation, the expansion tank body is connected to one end of the water circuit base plate, and the port of the gas outlet channel in the water circuit base plate is arranged in the middle of the inner cavity of the water circuit base plate.

[0015] In another aspect, a thermal management system integrated with a hybrid vehicle cooling liquid integrated module is provided.

[0016] The hybrid vehicle cooling liquid integrated module comprises an expansion tank, a water pump, a water valve, and a water-water heat exchanger for heating a battery pack, the expansion tank comprises an expansion tank body and a water circuit base plate connected in communication, the water pump, the water valve, and the water-water heat exchanger for heating the battery pack are all integrated on the water circuit base plate, and the water valve is a four-way valve.

[0017] The four-way valve has a valve No. 1 port, a valve No. 2 port, a valve No. 3 port, and a valve No. 4 port, the valve No. 1 port is connected to a vehicle engine water circuit, the valve No. 2 port is connected to the water-water heat exchanger, the valve No. 3 port is connected to a vehicle electric heater through the water pump, the valve No. 4 port is connected to a vehicle heater core, and the engine water circuit, the water-water heat exchanger, the electric heater, and the heater core are connected through pipelines to form the thermal management system.

[0018] In a possible implementation, the thermal management system implements at least one of 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 achieved by the electric heater heating the passenger cabin in the pure EV mode, the valve 3 and the valve 4 are connected internally, the valve 1 and the valve 2 are closed, the water pump drives the liquid to flow through the electric heater to the heater core, then to the valve 4, and then back to the water pump through the valve 3;

[0020] The second mode is achieved by the electric heater heating the battery pack in the pure EV mode, the valve 2 and the valve 3 are connected internally, the valve 1 and the valve 4 are closed, the water pump drives the liquid to flow through the electric heater to the water-water heat exchanger, then to the valve 2, and then back to the water pump through the valve 3;

[0021] The third mode is achieved by the electric heater heating the battery pack and the passenger cabin in the pure EV mode, the valve 3 to the valve 2 and the valve 4 are connected internally, the valve 1 is closed, the water pump drives the liquid to flow through the electric heater to the water-water heat exchanger and the heater core, then to the valve 2 and the valve 4, and then back to the water pump through the valve 3;

[0022] The fourth mode is achieved by the engine heating the passenger cabin in the working mode, the valve 1 and the valve 4 are connected internally, the valve 2 and the valve 3 are closed, the main water pump of the engine drives the liquid to flow to the heater core, then to the valve 4, and then back to the main water pump of the engine through the valve 1;

[0023] The fifth mode is achieved by the engine heating the battery pack in the working mode, the valve 1 and the valve 2 are connected internally, the valve 3 and the valve 4 are closed, the main water pump of the engine drives the liquid to flow to the water-water heat exchanger, then to the valve 2, and then back to the main water pump of the engine through the valve 1;

[0024] The sixth mode is achieved by the engine heating the passenger cabin and the battery pack in the working mode, the valve 1 to the valve 2 and the valve 4 are connected internally, the valve 3 is closed, the main water pump of the engine drives the liquid to flow to the water-water heat exchanger and the heater core, then to the valve 2 and the valve 4, and then back to the main water pump of the engine through the valve 1;

[0025] The seventh mode is realized by heating the battery pack with the engine waste heat and heating the passenger cabin with the electric heater, the valve 1 port and the valve 2 port are internally communicated, the main water pump of the engine drives liquid to flow to the water-water heat exchanger, to the valve 2 port, and then back to the front of the main water pump of the engine through the valve 1 port, and the valve 3 port and the valve 4 port are internally communicated, the water pump drives liquid to flow through the electric heater to the heater core, to the valve 4 port, and then back to the front of the water pump through the valve 3 port;

[0026] The eighth mode is realized by filling mode, the valve 1 port and the valve 4 port are internally communicated, the valve 2 port and the valve 3 port are internally communicated, the main water pump of the engine drives liquid to flow to the water-water heat exchanger, to the valve 2 port, and then back to the front of the water pump through the valve 3 port, and then flows through the electric heater to the heater core, and then from the valve 4 port to the valve 1 through the high-temperature expansion tank in the expansion tank, and back to the front of the main water pump of the engine.

[0027] The cooling liquid side integrated module structure provided by the embodiment of the application is reasonable in design, structures in the same high-temperature or low-temperature system range in the cooling liquid side system and having similar physical positions in the framework and participating in system circulation functions are replaced by a cooling liquid plate, the water pump, the water valve, the water-water heat exchanger, the battery cooler, the high-temperature and low-temperature expansion tanks, the water pipe, and the fixing standard parts and the support are connected to form an integrated product, the integrated setting structure is compact, which is beneficial to arrangement and installation, and the thermal management function modes are various, and the thermal management under various driving modes is met. BRIEF DESCRIPTION OF DRAWINGS

[0028] The content expressed by each figure in the specification and the marks in the figures are briefly described as follows:

[0029] FIG. 1 is a framework principle diagram of a thermal management system according to an example embodiment of the application;

[0030] FIG. 2 is a schematic diagram of a cooling liquid side integrated module of a hybrid vehicle according to an example embodiment of the application;

[0031] FIG. 3 is an exploded schematic diagram of a cooling liquid side integrated module assembly according to an example embodiment of the application;

[0032] FIG. 4 is a schematic diagram of a wave-proof structure according to an example embodiment of the application;

[0033] FIG. 5 is a schematic diagram of a gas removal structure according to an example embodiment of the application.

[0034] In the figure: 1, high-temperature expansion tank cover; 2, low-temperature expansion tank cover; 3, bushing; 4, soft pad; 5, expansion tank body; 501, waterway base plate; 6, battery cooler; 7, electromagnetic expansion valve assembly; 8, low-pressure PT sensor; 9, heat insulation sponge; 10, water valve sealing ring; 11, water valve; 12, water pump; 13, water pump inlet O-ring; 14, water-water heat exchanger; 15, water pump outlet O-ring; 16, wiring harness assembly; 17, bolt; 18, H sealing ring; 19, hexagonal bolt; 20, degassing valve; 21, degassing valve sealing ring; 22, wave protection structure; 23, gas outflow channel. DETAILED DESCRIPTION

[0035] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

[0036] As shown in FIGS. 1-5, the hybrid vehicle cooling liquid side integrated module includes an expansion tank, a water pump 12, a water valve 11, and a water-water heat exchanger 14 for heating the battery pack, the expansion tank includes a waterway base plate 501 and an expansion tank body 5 connected in communication, 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.

[0037] The present application adopts an integrated approach, the products in the high and low temperature system range which are physically close in the framework and participate in the system circulation function in the cooling liquid side system are replaced by a cooling liquid plate to replace the water pipe, the water pump 12, the water valve 11, the water-water heat exchanger 14, the battery cooler 6, the high and low temperature expansion tank, the water pipe and the fixed standard parts, the bracket are connected to make an integrated product, the function of which can completely realize the dispersed arrangement function, through integration, the number of water pump 12, water valve 11, water-water heat exchanger 14, battery cooler 6, high temperature expansion tank, low temperature expansion tank and other single parts and components is reduced, the number of assemblies and components is effectively reduced for the whole vehicle, the weight is greatly reduced, the cost is optimized, and the arrangement and process are effectively simplified.

[0038] In some embodiments, the expansion tank body, the battery cooler 6, the electromagnetic expansion valve assembly 7, and the low-pressure PT sensor 8 are located on one side of the waterway base plate 501, and the water valve 11, the water pump 12, and the water-water heat exchanger 14 are arranged on the other side of the waterway base plate 501. On the one hand, the functions realized by different sides are clear, and the connection required pipelines between the components are saved, on the other hand, the waterway base plate is used as a heat shield to reduce the risk of leakage.

[0039] Optionally, the water pump 12 is implemented as two, the water-water heat exchanger 14 is located between the two water pumps, and the water pump 12, the water-water heat exchanger 14, and the water valve 11 are arranged side by side, and the structure is compact.

[0040] The expansion tank body 5 and the water channel base plate 501 are realized as an integrated structure; the edge of the expansion tank body 5 and the edge of the water channel base plate 501 are each provided with a fixing lug, the fixing lug is provided with a bushing 3 and a soft pad 4, and the structure is stable and reliable.

[0041] The water valve 11 is fixed on the water channel base plate 501 through a water valve sealing ring 10 and a bolt 17; one water pump is fixed and sealed through a water pump inlet O-shaped ring 13, and the other water pump is fixed and sealed through a water pump outlet O-shaped ring 15; the water valve 11 is fixed and sealed through an H-shaped sealing ring 18 and a hexagonal bolt 19, the integrated setting is realized, the setting process of unnecessary water pipes and connectors and other components is omitted, and the number of parts used is reduced.

[0042] Optionally, the expansion tank includes a high-temperature expansion tank and a low-temperature expansion tank, and the high-temperature expansion tank is connected with the low-temperature expansion tank. The high-temperature expansion tank is provided with a high-temperature expansion tank cover 1 at the top, and the low-temperature expansion tank is provided with a low-temperature expansion tank cover 2 at the top. The high-temperature expansion tank is connected with one end of the water channel base plate 501, and there is a gap between the low-temperature expansion tank and the water channel base plate 501. A battery cooler and an electromagnetic expansion valve assembly are integrated in the gap, and the battery cooler is sleeved with a heat insulation sponge 9, and the structure is compact.

[0043] Optionally, the expansion tank body is provided with a wave-preventing structure 22 for avoiding bubbles caused by liquid impact; preferably, the wave-preventing structure 22 includes a bottom plate and a group of antennae extending upward on the bottom plate, and a group of through holes are arranged on the bottom plate.

[0044] Optionally, the expansion tank body is provided with a degassing valve 20, which is sealed by a degassing valve sealing ring 21 during installation. The water channel base plate 501 is provided with a gas outflow channel 23 connected with the degassing valve and leading into the expansion tank body. Further, the expansion tank body is connected with one end of the water channel base plate 501, and the port of the gas outflow channel in the water channel base plate 501 is arranged in the middle of the inner cavity of the water channel base plate 501.

[0045] In the above embodiment, the gas outflow channel port is located in the middle of the inner cavity of the water channel base plate, corresponding to the area with lower flow rate and higher gas content, which to some extent shortens the degassing time of the cooling machine; in addition, the gas outflow channel port is arranged on the water channel base plate, which uses the water channel base plate as a gas guide wall, without the need for additional arrangement of elbow pipes or hoses, thereby saving the longitudinal space of the vehicle layout to some extent.

[0046] In the above embodiment, the effect of the water channel base plate with the gas outflow channel is realized, that is, the degassing path is directly arranged inside the water channel base plate, without the need for hose / joint components, thereby shortening the degassing circuit to some extent.

[0047] In the embodiments of the present application, the expansion tank and the water circuit substrate are both made of PP+GF20 material; the water valve 11 is a four-way valve, which can realize at least eight different function modes (the specific modes are described in detail in the implementation description), and the stroke of the valve core is 320°, of which the proportional adjustment range can be adjusted to a maximum of 60°.

[0048] In the embodiments of the present application, the hybrid vehicle cooling liquid side integrated module mentioned above can be integrated into a thermal management system, and the water valve in the hybrid vehicle cooling liquid side integrated module is realized as a four-way valve. The four-way valve has a valve No. 1 port, a valve No. 2 port, a valve No. 3 port, and a valve No. 4 port. The valve No. 1 port is connected to the engine water circuit of the vehicle, the valve No. 2 port is connected to the water-water heat exchanger 14, the valve No. 3 port is connected to the electric heater of the vehicle through the water pump 12, and the valve No. 4 port is connected to the heater core of the vehicle. The engine water circuit, the water-water heat exchanger, the electric heater, and the heater core are connected through pipelines to form a thermal management system.

[0049] In the embodiments of the present application, the vehicle is mainly a hybrid electric vehicle (HEV). The hybrid electric vehicle refers to a single vehicle platform equipped with two or more vehicle-mounted 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 use environment of the hybrid electric vehicle is -40℃ to 125℃, the structure of the expansion tank is set to a one-tank two-cavity or double-zone expansion structure, that is, a high-temperature expansion tank and a low-temperature expansion tank are simultaneously divided inside the expansion tank. Different expansion tanks are connected to different vehicle structures, such as a high-temperature expansion tank connected to an engine / motor and a low-temperature expansion tank connected to a battery / inverter, etc. This avoids the risk of cold boiling or overheated gas resistance caused by the cavity formed by a single expansion tank, and eliminates the phenomenon of gas leakage caused by the connection of a single expansion tank to multiple vehicle structures, thereby reducing the risk of water pump cavitation to some extent.

[0051] In addition, to avoid the problem of integrated internal degassing, the module related to the present application is also provided with a manual degassing valve. For manual liquid supplementing, no additional water pipe structure is needed for degassing, and it is realized by optimizing the structure through injection molding process; the low-temperature expansion tank participates in the circulation throughout the process, and is provided with an "anti-wave" structure, which effectively avoids the bubbles caused by liquid impact.

[0052] The thermal management system provided in the embodiments of the present application can realize 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.

[0053] The first mode is achieved by the electric heater to heat the passenger cabin in the pure EV mode, the valve 3 and valve 4 are connected internally, the valve 1 and valve 2 are closed, the water pump drives the liquid to flow through the electric heater to the heater core, and then to the valve 4, and then to the valve 3 to return to the front of the water pump.

[0054] The second mode is achieved by the electric heater to heat the battery pack in the pure EV mode, the valve 2 and valve 3 are connected internally, the valve 1 and valve 4 are closed, the water pump drives the liquid to flow through the electric heater to the water-water heat exchanger, and then to the valve 2, and then to the valve 3 to return to the front of the water pump.

[0055] The third mode is achieved by the electric heater to heat the battery pack and the passenger cabin in the pure EV mode, the valve 3 to valve 2 and valve 4 are connected internally, the valve 1 is closed, the water pump drives the liquid to flow through the electric heater to the water-water heat exchanger and the heater core, and then to the valve 2 and valve 4, and then to the valve 3 to return to the front of the water pump.

[0056] The fourth mode is achieved by the engine to heat the passenger cabin in the working mode of the engine, the valve 1 and valve 4 are connected internally, the valve 2 and valve 3 are closed, the main water pump of the engine drives the liquid to flow to the heater core, and then to the valve 4, and then to the valve 1 to return to the front of the main water pump of the engine.

[0057] The fifth mode is achieved by the engine to heat the battery pack in the working mode of the engine, the valve 1 and valve 2 are connected internally, the valve 3 and valve 4 are closed, the main water pump of the engine drives the liquid to flow to the water-water heat exchanger, and then to the valve 2, and then to the valve 1 to return to the front of the main water pump of the engine.

[0058] The sixth mode is achieved by the engine to heat the passenger cabin and the battery pack in the working mode of the engine, the valve 1 to valve 2 and valve 4 are connected internally, the valve 3 is closed, the main water pump of the engine drives the liquid to flow to the water-water heat exchanger and the heater core, and then to the valve 2 and valve 4, and then to the valve 1 to return to the front of the main water pump of the engine.

[0059] The seventh mode is achieved by the engine waste heat to heat the battery pack, and the passenger cabin is heated by the electric heater, the valve 1 and valve 2 are connected internally, the main water pump of the engine drives the liquid to flow to the water-water heat exchanger, and then to the valve 2, and then to the valve 1 to return to the front of the main water pump of the engine, and the valve 3 and valve 4 are connected internally, the water pump drives the liquid to flow through the electric heater to the heater core, and then to the valve 4, and then to the valve 3 to return to the front of the water pump.

[0060] The eighth mode is implemented as a filling mode, the valve 1 port and the valve 4 port are internally connected, the valve 2 port and the valve 3 port are internally connected, the engine 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 to return to the front of the water pump, then through the electric heater to the heater core, then from the valve 4 port to the valve 1 through the high-temperature expansion tank in the expansion tank, and back to the front of the engine main water pump.

[0061] In the above embodiment, under the premise of not increasing the number of valves, through the cooperation of a single four-way valve and two water pumps, the free combination of three heat sources of the passenger compartment, the battery pack and the engine is realized, and under the premise of reducing the hardware cost, the system freedom degree of the thermal management system is further improved.

[0062] In the above embodiment, the hybrid vehicle adapts different heating processes under the working conditions of different power sources, that is, the electric heater is started on demand in the pure EV mode, and the waste heat is preferentially used to heat the vehicle energy in the engine mode, which to some extent reduces the vehicle energy consumption of the hybrid vehicle and shortens the time required for cold start.

[0063] Figure 2 is a schematic diagram of a hybrid vehicle coolant side integrated module based on Figure 1 and the material list (in the dashed line box) provided by the dispersion device. Figure 2 shows that the various components in the hybrid vehicle coolant side integrated module cooperate with each other to realize all the functions in the thermal management system shown in Figure 1.

[0064] The first water pump 100, the second water pump 110, the high-voltage electric heater 120, the high-voltage power battery 130, the water-water heat exchanger 140, the low-temperature expansion tank 150, the high-temperature expansion tank 160, the valves 1 to 4 170, the engine heat source 180, the cooler, and the electric heater heat source 190 are included in FIG. 1. The first water pump 100 is implemented as an electronic water pump for serving a battery pack, such as a Battery Electronic Water Pump (B-EWP), and the second water pump 110 is implemented as an electronic water pump for serving a heater core and / or an electric heater, such as a 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 on a hybrid vehicle, with a nominal voltage usually in the range of 90V to 1000V, for providing energy to high-voltage components such as drive motors, air conditioning compressors, heaters, etc. The water-water heat exchanger 140 is used to separate the high-temperature coolant circuit (such as the engine, electric drive system, etc.) from the low-temperature coolant circuit (such as the battery, motor, or air conditioning system, etc.), and exchanges heat through a plate or sleeve structure without mixing the liquids, to achieve the purposes of battery preheating, engine preheating recovery, rapid warming, etc. The low-temperature expansion tank 150 and the high-temperature expansion tank 160 refer to two independent cavities with different functions and temperature levels but integrated in the same expansion tank shell, wherein the low-temperature expansion tank 150 mainly serves the low-temperature circuit such as the battery pack, motor, and air conditioning system, with a temperature range of 20-50°C, and the high-temperature expansion tank 160 mainly serves the high-temperature circuit such as the engine and electric drive system, with a temperature range of 90-110°C. The engine heat source 180 is mainly applied in scenarios where the engine is started and the cylinder residual heat is utilized, and the water flow direction mainly presents the main water pump to the cylinder to the heater core / water-water heat exchanger 140 and back to the engine main water pump, for realizing the functions of passenger cabin heating, battery preheating, and defrosting, etc. The electric heater heat source 190 is mainly applied in scenarios where the hybrid vehicle is in pure electric mode or the engine is not started and is powered by the high-voltage power battery 130, and the water flow direction mainly presents the electric heater water pump to the electric heater to the heater core / battery heat exchanger and back to the electric heater water pump, for realizing the functions of passenger cabin heating in pure electric mode and low-temperature rapid heating of the battery, etc.

[0065] It should be noted that in the embodiments of the present application, considering the actual application and operability, the cooling liquid side integrated module of the present application does not include a high-voltage electric heater 120, and a waterway substrate (integrated in the expansion body 5) is used instead of the traditional at least six water pipes and twelve clamps, so that the length of the pipeline in the actual dispersed arrangement is shortened, and installation structures are provided for connecting two water pumps 12, water valves 11, water-water heat exchangers 14, battery coolers 6, etc. At the same time, the water pump 12, the water valve 11, and the water-water heat exchanger 14 are replaced by the waterway substrate (integrated in the expansion body 5) substructure, the water pump 12, the water valve 11, the water-water heat exchanger 14, and the battery cooler 6 are assembled on the waterway substrate (integrated in the expansion body 5), and the connection harness assembly 16 is provided, finally forming a complete hybrid vehicle cooling liquid side integrated module product, which realizes at least eight mode functions related in the above embodiments, has all the functions of the dispersed arrangement, and effectively reduces the number of parts. Compared with the scattered arrangement, six water pipes, twelve clamps, and six supports are reduced, the harness is optimized, the weight is reduced by about 2 kg, the vehicle weight and process are effectively optimized, and the vehicle cost is reduced.

[0066] FIG. 3 is an exploded schematic view of a cooling liquid side integrated module assembly provided by an example embodiment of the present application, which shows the overall structure of the cooling liquid side integrated module. In FIG. 3, the internal structure of the waterway substrate (integrated in the expansion body 5) is relatively complex, the parts thereof are sealed by plastic injection molding process heating plate welding, the internal flow channel is connected between two components according to the principle diagram of the heat pipe system, and the internal structure will be different with different principle diagrams. The present schematic diagram is intended to illustrate the design and manufacture of the core invention of the present application, i.e., the waterway substrate, and the integrated idea can be implemented in similar heat management system structures.

[0067] FIG. 4 is a schematic view of a wave-proof structure provided by an example embodiment of the present application, which shows that inside the low-temperature cooling expansion tank, a wave-proof structure 22 is provided to prevent water flow from rolling, impacting the inner wall, and generating foam. The structure is an independent individual and is assembled with the internal structure of the expansion, the hybrid vehicle cooling liquid side integrated module provided by the embodiments of the present application has good effect on the "wave-proof" control of the fluid in actual application, the bottom has an opening, and the long "antennae" opening is used to decompose the impact of water, and the "antennae" is used to absorb the vibration caused by the impact.

[0068] FIG. 5 is a schematic view of a gas removal structure provided by an example embodiment of the present application, which shows a gas removal structure in the module, and the red part is a gas outlet channel. The hybrid vehicle cooling liquid side integrated module provided by the embodiments of the present application has a large volume and a long channel, and it is difficult to discharge the gas once the internal gas is extruded. The position of the gas outlet channel 23 is set on one side of the high-temperature expansion tank, which is convenient for after-sales maintenance operation.

[0069] The cooling liquid side integrated module structure of the application is reasonable in design. Structures in the same high or low temperature system range, which are physically close to each other and participate in the system circulation function in the cooling liquid side system, are connected by a cooling liquid plate to replace the water pipe, and the water pump, water valve, water-water heat exchanger, battery cooler, high and low temperature expansion tank, water pipe and fixed standard parts, and support are connected to form an integrated product. The integrated arrangement is compact in structure, which is beneficial to arrangement and installation. Moreover, the thermal management function mode is various, and the thermal management under various driving modes is satisfied.

[0070] The above is only a description of the preferred embodiments of the application, and the above technical features can be arbitrarily combined to form multiple embodiments of the application.

[0071] The application has been described above in conjunction with the drawings, and it is obvious that the specific implementation of the application is not limited by the above manner. Any non-essential improvement or direct application of the concept and technical solution of the application to other occasions is within the protection scope of the 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 comprises an expansion tank body and a water circuit base plate in communication, the water pump, the water valve and the water-water heat exchanger for heating the battery pack are integrated on the water circuit base plate.

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

3. The hybrid vehicle cooling liquid side integrated module according to claim 1 or 2, wherein the expansion tank body is provided with a wave-preventing structure for avoiding bubble generation caused by liquid impact.

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

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

6. The hybrid vehicle cooling liquid side integrated module according to any one of claims 1 to 5, wherein the expansion tank comprises 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 base plate, and the low-temperature expansion tank and the water circuit base plate are spaced apart, and a battery cooler and an electromagnetic expansion valve assembly are integrated in the gap.

7. The hybrid vehicle cooling liquid side integrated module according to any one of claims 1 to 6, wherein the wave-preventing structure comprises a bottom plate and a group of upwardly extending antennae arranged on the bottom plate, and a group of through holes are arranged on the bottom plate.

8. The hybrid vehicle cooling liquid side integrated module according to any one of claims 1 to 7, wherein the expansion tank body is connected to one end of the water circuit base plate, and the port of the gas outflow channel in the water circuit base plate is arranged in the middle of the inner cavity of the water circuit base plate.

9. A thermal management system, wherein, The thermal management system is integrated with a hybrid vehicle cooling liquid integrated module; The hybrid vehicle cooling liquid integrated module comprises an expansion tank, a water pump, a water valve and a water-water heat exchanger for heating a battery pack, the expansion tank comprises an expansion tank body and a water circuit base plate in communication, the water pump, the water valve and the water-water heat exchanger for heating the battery pack are integrated on the water circuit base plate, and the water valve is realized as a four-way valve; The four-way valve has a valve No. 1 port, a valve No. 2 port, a valve No. 3 port and a valve No. 4 port, the valve No. 1 port is connected to a vehicle engine water circuit, the valve No. 2 port is connected to the water-water heat exchanger, the valve No. 3 port is connected to an electric heater of the vehicle through the water pump, and the valve No. 4 port is connected to a heater core of the vehicle, the engine water circuit, the water-water heat exchanger, the electric heater and the heater core are connected through pipelines to form the thermal management system.

10. The thermal management system according to claim 9, wherein the thermal management system realizes at least one mode of 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. The first mode is achieved by the electric heater to heat the passenger cabin in the pure EV mode, the valve 3 and the valve 4 are connected internally, the valve 1 and the valve 2 are closed, the water pump drives the liquid to flow through the electric heater to the heater core, and then to the valve 4, and then back to the water pump through the valve 3; The second mode is achieved by the electric heater to heat the battery pack in the pure EV mode, the valve 2 and the valve 3 are connected internally, the valve 1 and the valve 4 are closed, the water pump drives the liquid to flow through the electric heater to the water-water heat exchanger, and then to the valve 2, and then back to the water pump through the valve 3; The third mode is achieved by the electric heater to heat the battery pack and the passenger cabin in the pure EV mode, the valve 3 to the valve 2 and the valve 4 are connected internally, the valve 1 is closed, the water pump drives the liquid to flow through the electric heater to the water-water heat exchanger and the heater core, and then to the valve 2 and the valve 4, and then back to the water pump through the valve 3; The fourth mode is achieved by the engine to heat the passenger cabin in the working mode of the engine, the valve 1 and the valve 4 are connected internally, the valve 2 and the valve 3 are closed, the main water pump of the engine drives the liquid to flow to the heater core, and then to the valve 4, and then back to the main water pump of the engine through the valve 1; The fifth mode is achieved by the engine to heat the battery pack in the working mode of the engine, the valve 1 and the valve 2 are connected internally, the valve 3 and the valve 4 are closed, the main water pump of the engine drives the liquid to flow to the water-water heat exchanger, and then to the valve 2, and then back to the main water pump of the engine through the valve 1; The sixth mode is achieved by the engine to heat the passenger cabin and the battery pack in the working mode of the engine, the valve 1 to the valve 2 and the valve 4 are connected internally, the valve 3 is closed, the main water pump of the engine drives the liquid to flow to the water-water heat exchanger and the heater core, and then to the valve 2 and the valve 4, and then back to the main water pump of the engine through the valve 1; The seventh mode is achieved by the engine waste heat to heat the battery pack, and the passenger cabin is heated by the electric heater, the valve 1 and the valve 2 are connected internally, the main water pump of the engine drives the liquid to flow to the water-water heat exchanger, and then to the valve 2, and then back to the main water pump of the engine through the valve 1, and the valve 3 and the valve 4 are connected internally, the water pump drives the liquid to flow through the electric heater to the heater core, and then to the valve 4, and then back to the water pump through the valve 3; The eighth mode is realized as a filling mode, the valve 1st port and the valve 4th port are connected internally, the valve 2nd port and the valve 3rd port are connected internally, the main water pump of the engine drives the liquid to flow to the water-water heat exchanger, then to the valve 2nd port, then through the valve 3rd port to return to the front of the water pump, then through the electric heater to the heater core, then from the valve 4th port to the valve 1st through the high-temperature expansion tank in the expansion tank, and return to the front of the main water pump of the engine.

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