Extended-range vehicle thermal management system and extended-range vehicle

Abstract

The application relates to the technical field of automobiles and provides a range-extending automobile thermal management system and a range-extending automobile. The thermal management system comprises: an air conditioner refrigerant circuit comprising a first heat exchanger and a second heat exchanger; a first cooling liquid circuit comprising a range extender, a first radiator and a second radiator which are sequentially connected in series to form a circuit, a shunt branch being connected between an outlet end of the first radiator and an inlet end of the range extender, and the first heat exchanger being connected between the range extender and the second radiator; and a second cooling liquid circuit comprising a heat exchange main circuit for heat exchange with the second heat exchanger and a battery heat exchange branch and / or an air conditioner heat exchange branch connected to the heat exchange main circuit. According to the scheme, indirect coupling energy across the circuits is realized through the heat exchangers, the range extender waste heat is used to drive battery / cabin temperature control, dependence on a heater is reduced, and energy consumption is reduced; the first radiator and the second radiator form a stepped heat dissipation, a cooling liquid dynamic distribution mechanism is formed through the shunt branch, and cooling liquid temperature precise regulation and control are realized.

Description

Technical Field

[0001] This application relates to the field of automotive technology, and in particular to a thermal management system for range-extended vehicles and a range-extended vehicle. Background Technology

[0002] The thermal management system of range-extended electric vehicles (REEVs) needs to manage the temperature of multiple components simultaneously, including the range extender, battery, and cabin. Traditional solutions typically employ independent loop designs, resulting in complex system structures, redundant components, and ineffective recovery and utilization of waste heat from the range extender. Cabin heating and battery pack heating primarily rely on energy-intensive PTC heaters, leading to high energy consumption. Furthermore, the coordinated control between multiple loops depends on complex valve assemblies, resulting in slow mode switching response and insufficient temperature regulation accuracy.

[0003] Therefore, there is an urgent need for an integrated and efficient thermal management system. Utility Model Content

[0004] Based on this, the present invention provides a range-extended vehicle thermal management system and a range-extended vehicle to solve the problem that the waste heat of the range extender cannot be effectively recovered and utilized in the prior art, and that cabin heating and battery pack heating mainly rely on high-energy-consuming PTC heaters, resulting in high energy consumption.

[0005] This utility model provides a range-extended vehicle thermal management system, comprising:

[0006] An air conditioning refrigerant circuit includes a first heat exchanger and a second heat exchanger;

[0007] The first coolant circuit includes a range extender, a first radiator, and a second radiator connected in series to form a circuit. A branch is short-circuited between the outlet end of the first radiator and the inlet end of the range extender. The coolant side of the first heat exchanger is connected between the range extender and the second radiator, so that the air conditioning refrigerant circuit and the first coolant circuit can exchange heat.

[0008] The second coolant circuit includes a main heat exchange circuit that exchanges heat with the second heat exchanger and a battery heat exchange branch and / or an air conditioning heat exchange branch connected to the main heat exchange circuit.

[0009] In one embodiment, the branch line is connected to the pipeline between the first radiator and the second radiator via a first three-way valve.

[0010] In one embodiment, a heater is also provided on the main heat exchange line, and the heater is located between the outlet end of the second heat exchanger and the inlet of the heat exchange branch line.

[0011] In one embodiment, the second coolant circuit includes the battery heat exchange branch and the air conditioning heat exchange branch;

[0012] The battery heat exchange branch and the air conditioning heat exchange branch are connected in parallel on the main heat exchange branch.

[0013] In one embodiment, the inlet ends of the battery heat exchange branch and the air conditioning heat exchange branch are connected to the main heat exchange branch via a second three-way valve.

[0014] In one embodiment, both the first three-way valve and the second three-way valve are proportional three-way valves.

[0015] In one embodiment, the first heat exchanger includes a first tube section and a second tube section;

[0016] The first pipe section is connected in series to the first coolant circuit, and the second pipe section is connected in series to the air conditioning refrigerant circuit.

[0017] In one embodiment, the second heat exchanger includes a third tube section and a fourth tube section;

[0018] The third pipe section is connected in series to the second coolant circuit, and the fourth pipe section is connected in series to the air conditioning refrigerant circuit.

[0019] In one embodiment, the battery heat exchange branch is connected to the battery heat exchange assembly, and the air conditioning heat exchange branch is connected to the air conditioning unit heat exchanger.

[0020] On the other hand, this utility model also provides a range-extended vehicle, which includes the range-extended vehicle thermal management system of any of the above embodiments.

[0021] Compared with the prior art, this utility model has at least the following beneficial effects:

[0022] This utility model discloses a range-extended vehicle thermal management system. Through a first heat exchanger, it transfers high-temperature waste heat from the range extender to the air conditioning refrigerant circuit. Through a second heat exchanger, it transfers refrigerant energy to the second coolant circuit. This achieves an indirect, cross-circuit energy chain, using range extender waste heat to drive battery / cabin temperature control, reducing reliance on heaters, decreasing energy consumption, and eliminating redundant valves and piping, resulting in higher integration and a simpler structure. In the range extender cooling circuit, a stepped cooling system is formed by connecting the first and second radiators in series, with a branch line directly connected to the range extender inlet between them, creating a dynamic coolant distribution mechanism. This allows some coolant to undergo two stages of cooling to meet the energy requirements of the air conditioning refrigerant circuit, while the remaining coolant only undergoes one stage of cooling before returning to the range extender. This achieves precise coolant temperature control and avoids energy waste caused by overcooling the range extender. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the thermal management system of a range-extended vehicle in one embodiment;

[0024] Figure 2 This is a schematic diagram of the refrigerant flow direction in a refrigeration mode in one embodiment;

[0025] Figure 3 This is a schematic diagram of the refrigerant flow direction in heating mode in one embodiment.

[0026] The reference numerals in the accompanying drawings include:

[0027] 100 - Air conditioning refrigerant circuit;

[0028] 110 - First heat exchanger; 120 - Second heat exchanger; 130 - Compressor; 140 - Reversing valve; 150 - Gas-liquid separator; 160 - Throttling device;

[0029] 200 - First coolant circuit;

[0030] 210 - Range extender; 220 - First radiator; 230 - Second radiator; 240 - Branch circuit; 250 - First three-way valve; 260 - First electric water pump;

[0031] 300 - Second coolant circuit;

[0032] 310 - Main heat exchange circuit; 311 - Second electronic water pump; 312 - Heater; 320 - Air conditioning heat exchange branch circuit; 321 - Air conditioning unit heat exchanger; 330 - Battery heat exchange branch circuit; 331 - Battery heat exchange assembly; 340 - Second three-way valve. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments.

[0034] As described in the background section, traditional range-extended electric vehicle (REEV) thermal management systems typically have independently configured thermal management loops for each component, resulting in a complex system structure, redundant components, and ineffective recovery and utilization of waste heat from the range extender. Cabin heating and battery pack heating primarily rely on energy-intensive PTC heaters, leading to high energy consumption. Furthermore, the coordinated control between multiple loops depends on complex valve assemblies, resulting in slow mode switching response and insufficient temperature regulation accuracy.

[0035] To address the above problems, this utility model provides a range-extended vehicle thermal management system, which includes:

[0036] The air conditioning refrigerant circuit 100 includes a first heat exchanger 110 and a second heat exchanger 120;

[0037] The first coolant circuit 200 includes a range extender, a first radiator 220 and a second radiator 230 connected in series to form a circuit. A branch line 240 is short-circuited between the outlet end of the first radiator 220 and the inlet end of the range extender 210. The coolant side of the first heat exchanger 110 is connected between the range extender 210 and the second radiator 230, so that the air conditioning refrigerant circuit 100 and the first coolant circuit 200 exchange heat.

[0038] The second coolant circuit 300 includes a heat exchange main circuit 310 that exchanges heat with the second heat exchanger 120, and a battery heat exchange branch circuit 330 and / or an air conditioning heat exchange branch circuit 320 connected to the heat exchange main circuit 310.

[0039] The working process of the range-extended vehicle thermal management system provided in the utility model embodiment is described below in conjunction with specific operating conditions:

[0040] Operating Condition 1: Range Extender 210 High-Load Heat Dissipation + Cabin Cooling / Battery Cooling

[0041] In the first coolant circuit 200, the range extender 210 has a high temperature. After the water from the range extender 210 is efficiently cooled by the first radiator 220, it is divided into two paths. One path goes directly back to the range extender 210 through the branch path 240. The second path goes through the second radiator 230 to further reduce the temperature and then exchanges heat with the first heat exchanger 110 before finally returning to the range extender 210.

[0042] When the air conditioning refrigerant circuit 100 is switched to cooling mode, the first heat exchanger 110 acts as a condenser to release heat to the first coolant circuit 200, and the second heat exchanger 120 acts as an evaporator to absorb heat from the second coolant circuit 300.

[0043] In the second coolant circuit 300, the coolant in the main heat exchange circuit 310 exchanges heat with the air conditioning refrigerant circuit 100 through the second heat exchanger 120, and its temperature decreases. The cooled coolant then flows through the battery heat exchange branch 330 / air conditioning heat exchange branch 320 to achieve cabin / battery pack cooling.

[0044] Operating Condition 2: Range Extender 210 under low load + cabin heating / battery insulation

[0045] In the first coolant circuit 200, the range extender 210 has a low temperature. The water outlet of the range extender 210 passes through the first radiator 220 without heat exchange and is divided into two paths. One path goes directly back to the range extender 210 through the branch 240. The second path passes through the secondary radiator without heat exchange and then exchanges heat with the air conditioning refrigerant circuit 100 through the first heat exchanger 110 to heat the refrigerant before finally returning to the range extender 210.

[0046] When the air conditioning refrigerant circuit 100 is switched to heating mode, the first heat exchanger 110 absorbs heat from the first coolant circuit 200 as an evaporator, and the second heat exchanger 120 releases heat to the second coolant circuit 300 as a condenser.

[0047] In the second coolant circuit 300, the coolant in the main heat exchange circuit 310 exchanges heat with the air conditioning refrigerant circuit 100 through the second heat exchanger 120, and its temperature rises. The heated coolant then flows through the battery heat exchange branch 330 / air conditioning heat exchange branch 320 to achieve cabin heating / battery pack insulation.

[0048] The above-described range-extended vehicle thermal management system uses a first heat exchanger 110 to transfer high-temperature waste heat from the range extender 210 to the air conditioning refrigerant circuit 100, and a second heat exchanger 120 to transfer refrigerant energy to the second coolant circuit 300. This achieves an indirect coupling energy chain across circuits, using the range extender's waste heat to drive battery / cabin temperature control, reducing dependence on heaters, reducing energy consumption, and eliminating redundant valves and pipes, resulting in higher integration and a simpler structure. In the cooling circuit of the range extender 210, a stepped heat dissipation is formed by connecting the first radiator 220 and the second radiator 230 in series, with a branch line 240 directly connected to the inlet of the range extender 210, forming a dynamic coolant distribution mechanism. This allows some coolant to undergo two stages of heat dissipation to meet the energy requirements of the air conditioning refrigerant circuit 100, while the other part of the coolant returns to the range extender 210 after only one stage of heat dissipation, achieving precise coolant temperature control and avoiding energy waste caused by overcooling of the range extender 210.

[0049] The substance flowing in the air conditioning refrigerant circuit 100 is a refrigerant, which includes, but is not limited to, R134a refrigerant, R744 (carbon dioxide), etc. The coolant flowing in the first coolant circuit 200 and the second coolant circuit 300 includes, but is not limited to, water, antifreeze, or ethylene glycol, etc.

[0050] See Figures 1 to 3 In this embodiment, the air conditioning refrigerant circuit 100 is also equipped with a compressor 130, a reversing valve 140, a throttling device 160 and a gas-liquid separator 150.

[0051] The throttling device 160 is connected between the first heat exchanger 110 and the second heat exchanger 120, and is used to reduce the pressure and control the flow of the refrigerant in the circuit to ensure the efficient and stable operation of the refrigeration system. In this embodiment, the throttling device 160 can specifically be an electronic expansion valve.

[0052] The reversing valve 140 is used to switch the flow direction of refrigerant in the air conditioning refrigerant circuit 100 to match the switching of air conditioning cooling / heating modes. For details, see... Figure 2 and Figure 3The reversing valve 140 can be a two-position four-way reversing valve 140, which is connected between the compressor 130 and the first heat exchanger 110 and the second heat exchanger 120, and has two operating states:

[0053] like Figure 2 As shown, in the first working state, the refrigerant from the compressor 130 is directed to the first heat exchanger 110 through the reversing valve 140. In this state, the first heat exchanger 110 acts as a condenser and the second heat exchanger 120 acts as an evaporator.

[0054] like Figure 3 As shown, in the second operating state, the refrigerant from the compressor 130 is directed to the second heat exchanger 120 through the reversing valve 140. In this state, the second heat exchanger 120 acts as a condenser, and the first heat exchanger 110 acts as an evaporator.

[0055] See Figure 1 The gas-liquid separator 150 is connected to the inlet end of the compressor 130. It is used to protect the compressor 130 from liquid slugging damage and to ensure stable system operation by separating gaseous and liquid refrigerant.

[0056] The above components, combined with the first heat exchanger 110 and the second heat exchanger 120, form a refrigerant circulation path, which can achieve a cooling effect or provide energy for cabin heating as needed.

[0057] Among them, see Figure 1 Both the first heat exchanger 110 and the second heat exchanger 120 are plate heat exchangers, and both have two flow channels inside, namely a coolant flow channel and a refrigerant flow channel. The substances in the two flow channels can exchange heat to achieve heat transfer.

[0058] Specifically, the first heat exchanger 110 has two flow channels, namely a first pipe section and a second pipe section (not shown in the figure). The first pipe section is connected in series to the first coolant circuit 200, that is, the first coolant circuit 200 is connected to the coolant side of the first heat exchanger 110. The second pipe section is connected in series to the air conditioning refrigerant circuit 100. In this way, when the coolant in the first coolant circuit 200 flows through the first pipe section and the refrigerant in the air conditioning refrigerant circuit 100 flows through the second pipe section, heat exchange can be achieved between the two, realizing the cross-circuit transfer of heat.

[0059] The first heat exchanger 110 has two flow channels, a third pipe section and a fourth pipe section (not shown in the figure). The third pipe section is connected in series to the second coolant circuit 300, meaning the second coolant circuit 300 is connected to the coolant side of the second heat exchanger 120. The fourth pipe section is connected in series to the air conditioning refrigerant circuit 100. Thus, when the coolant in the second coolant circuit 300 flows through the third pipe section, and the refrigerant in the air conditioning refrigerant circuit 100 flows through the fourth pipe section, heat exchange can be achieved between the two, realizing cross-circuit heat transfer.

[0060] It should be understood that the first heat exchanger 110 and the second heat exchanger 120 are not limited to plate heat exchangers, but can also be tube heat exchangers, etc.

[0061] See Figure 1 In this embodiment, the first pipe section of the first heat exchanger 110 is specifically connected between the outlet of the second radiator 230 of the first coolant circuit 200 and the inlet of the range extender 210.

[0062] The first coolant circuit 200 achieves heat exchange with the air conditioning refrigerant circuit 100 through a first pipe section connected to the first heat exchanger 110. This heat exchange has two directions: the heat transfer direction is from the first coolant circuit 200 to the air conditioning refrigerant circuit 100, which can be used to utilize the waste heat of the range extender 210; the heat transfer direction is from the air conditioning refrigerant circuit 100 to the first coolant circuit 200, which can be used to release heat from the air conditioning refrigerant circuit 100.

[0063] Specifically, when the waste heat of the range extender 210 needs to be utilized, both the first radiator 220 and the second radiator 230 are turned off (i.e., the electric fan of the radiator is turned off and the grille is closed), serving only as a passage without heat dissipation. This allows the waste heat of the range extender 210 to reach the first section of the first heat exchanger 110 directly with the coolant. The first heat exchanger 110 acts as an evaporator, allowing the refrigerant in the second section of the first heat exchanger 110 to absorb the heat from the coolant in the first section, thus realizing the utilization of the waste heat of the range extender 210.

[0064] When the air conditioning refrigerant circuit 100 needs to release heat, both the first radiator 220 and the second radiator 230 are turned on. The water outlet of the range extender 210 is cooled down after two stages of heat dissipation, and then enters the first pipe section of the first heat exchanger 110. The first heat exchanger 110 acts as a condenser, allowing the refrigerant in the second pipe section of the first heat exchanger 110 to release heat to the coolant in the first pipe section, thereby realizing the heat release of the air conditioning refrigerant circuit 100. In this way, the two radiators realize the heat dissipation / release of the range extender 210 and the air conditioning refrigerant circuit 100.

[0065] Among them, see Figure 1The first radiator 220 and the second radiator 230 are also directly connected to the inlet of the range extender 210 through a branch 240, which enables the coolant to be split. Part of the coolant can undergo two stages of heat dissipation to meet the heat release requirements of the air conditioning refrigerant circuit 100, while the other part of the coolant returns to the range extender 210 after only one stage of heat dissipation, thus preventing the range extender 210 from becoming too cold and achieving precise control of the coolant temperature.

[0066] For details, see Figure 1 The branch line 240 is connected to the first radiator 220 and the second radiator 230 via a first three-way valve 250. Furthermore, the first three-way valve 250 can be a proportional three-way valve. This configuration allows for dynamic distribution of coolant flow through the proportional three-way valve, precisely adjusting the coolant distribution ratio. This prevents the range extender 210 from becoming overcooled under low-temperature conditions while maximizing heat dissipation under high loads.

[0067] See Figure 1 In this embodiment, the first coolant circuit 200 also includes a first electronic water pump 260, which is connected to the inlet side of the range extender 210. The first pipe section of the branch line 240 and the first heat exchanger 110 are both connected to the first electronic water pump 260. In this way, the first electronic water pump 260 can provide power for the coolant flow of the first coolant circuit 200, ensuring operational stability.

[0068] See Figure 1 In this embodiment, the heat exchange main circuit 310 of the second coolant circuit 300 can be regarded as a pipeline with an outlet end and an inlet end, and the battery heat exchange branch 330 and / or the air conditioning heat exchange branch 320 are connected between the inlet end and the outlet end of the heat exchange main circuit 310 to form a circuit.

[0069] Specifically, a second electronic water pump 311 is installed on the main heat exchange circuit 310, and the third pipe section of the second heat exchanger 120 is connected to the inlet side of the second electronic water pump 311. The second electronic water pump 311 can provide power for the flow of coolant in the second coolant circuit 300, ensuring operational stability.

[0070] Further, see Figure 1 A heater 312 is also installed on the main heat exchange circuit 310 of the second coolant circuit 300. This heater 312 is located between the outlet end of the third pipe section of the second heat exchanger 120 and the inlet of the heat exchange branch circuit. Specifically, in Figure 1In the example, heater 312 is located between the second electronic water pump 311 and the heat exchange branch. This configuration creates a composite heating system of air conditioning refrigerant circuit 100 and heater 312, which prioritizes the use of the condensation heat of the second heat exchanger 120. Heater 312 is only activated when insufficient heating is detected in the air conditioning refrigerant circuit 100. Heater 312 precisely replenishes heat, ensuring rapid warming of the cabin / battery in extremely low temperature environments. Heater 312 is located at the end of the main heat exchange circuit 310, directly compensating for the final temperature of the coolant about to enter the heat exchange branch, reducing heat transfer loss.

[0071] Specifically, in this embodiment, heater 312 can be selected as a PTC (Positive Temperature Coefficient) heater.

[0072] See Figure 1 In this embodiment, the second coolant circuit 300 is simultaneously provided with a battery heat exchange branch 330 and an air conditioning heat exchange branch 320. The battery heat exchange branch 330 and the air conditioning heat exchange branch 320 are connected in parallel to the main heat exchange circuit 310, that is, the battery heat exchange branch 330 and the air conditioning heat exchange branch 320 are connected in parallel between the outlet end and the inlet end of the main heat exchange circuit 310. Among them, the battery heat exchange branch 330 is connected to the battery heat exchange assembly 331, such as connecting to the battery pack coolant flow path; the air conditioning heat exchange branch 320 is connected to the automotive air conditioning unit heat exchanger 321. With this configuration, the coolant flow can be allocated between the two branches, allowing the automotive cabin heating and battery heating / insulation to share the same main heat exchange circuit 310 and the second heat exchanger 120, reducing redundant components and achieving higher integration.

[0073] Furthermore, the inlet ends of the battery heat exchange branch 330 and the air conditioning heat exchange branch 320 are connected to the main heat exchange branch 310 via a second three-way valve 340. The second three-way valve 340 can be a proportional three-way valve. With this configuration, the flow ratio of the two branches can be precisely adjusted in real time based on battery temperature and cabin heating requirements. For example, when the battery is fast charging and requires strong cooling, the flow is preferentially allocated to the battery branch, while during winter cabin heating, the cabin heating requirements are prioritized, thus meeting different heat demands.

[0074] Based on the above structural design, the working process of the range-extended vehicle thermal management system of this utility model will be explained below in conjunction with working condition 3:

[0075] Operating Condition 3: Pure Electric Mode (Range Extender 210 not working) + Low Temperature Cabin Heating

[0076] In the first coolant circuit 200, the range extender 210 does not provide heat; the coolant relies on the first radiator 220 and the second radiator 230 to absorb heat from the environment.

[0077] When the air conditioning refrigerant circuit 100 is switched to heating mode, the first heat exchanger 110 absorbs heat from the first coolant circuit 200 as an evaporator, and the second heat exchanger 120 releases heat to the second coolant circuit 300 as a condenser.

[0078] In the second coolant circuit 300, the coolant in the heat exchange main circuit 310 absorbs heat from the air conditioning refrigerant circuit 100. At the same time, the heater 312 starts to heat the coolant. The heated coolant is distributed to the air conditioning heat exchange branch circuit 320 through the second three-way valve 340 to meet the cabin heating requirements. The battery pack can be kept warm by distributing a small amount of flow through the second three-way valve 340.

[0079] On the other hand, this utility model embodiment also provides a range-extended vehicle, which includes the range-extended vehicle thermal management system of any of the above embodiments.

[0080] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0081] It should be noted that the illustrations provided in this embodiment are merely schematic representations of the basic concept of this utility model. The structures, proportions, sizes, etc., depicted in the accompanying drawings are only for illustrative purposes to aid those skilled in the art and to enable them to understand and read the content disclosed herein. They are not intended to limit the implementation conditions of this utility model. Any modifications to the structure, changes in proportions, or adjustments to the size, without affecting the effects and objectives achieved by this utility model, should still fall within the scope of the technical content disclosed herein.

[0082] The above embodiments merely illustrate several implementation methods of this application, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A thermal management system for range-extended electric vehicles, characterized in that, include: An air conditioning refrigerant circuit (100) includes a first heat exchanger (110) and a second heat exchanger (120); The first coolant circuit (200) includes a range extender (210), a first radiator (220) and a second radiator (230) connected in series to form a circuit. A branch line (240) is short-circuited between the outlet end of the first radiator (220) and the inlet end of the range extender (210). The coolant side of the first heat exchanger (110) is connected between the range extender (210) and the second radiator (230) to exchange heat between the air conditioning refrigerant circuit (100) and the first coolant circuit (200). The second coolant circuit (300) includes a heat exchange main circuit (310) that exchanges heat with the second heat exchanger (120) and a battery heat exchange branch circuit (330) and / or an air conditioning heat exchange branch circuit (320) connected to the heat exchange main circuit (310).

2. The range-extended vehicle thermal management system according to claim 1, characterized in that, The branch line (240) is connected to the pipeline between the first radiator (220) and the second radiator (230) via a first three-way valve (250).

3. The range-extended vehicle thermal management system according to claim 2, characterized in that, A heater (312) is also provided on the main heat exchange path (310), and the heater (312) is located between the outlet end of the second heat exchanger (120) and the inlet of the heat exchange branch path.

4. The range-extended vehicle thermal management system according to claim 3, characterized in that, The second coolant circuit (300) includes the battery heat exchange branch (330) and the air conditioning heat exchange branch (320); The battery heat exchange branch (330) and the air conditioning heat exchange branch (320) are connected in parallel on the heat exchange main branch (310).

5. The range-extended vehicle thermal management system according to claim 4, characterized in that, The battery heat exchange branch (330) is connected to the battery heat exchange assembly (331), and the air conditioning heat exchange branch (320) is connected to the air conditioning unit heat exchanger (321).

6. The range-extended vehicle thermal management system according to claim 4, characterized in that, The inlet ends of the battery heat exchange branch (330) and the air conditioning heat exchange branch (320) are connected to the heat exchange main branch (310) through the second three-way valve (340).

7. The range-extended vehicle thermal management system according to claim 6, characterized in that, Both the first three-way valve (250) and the second three-way valve (340) are proportional three-way valves.

8. The range-extended vehicle thermal management system according to claim 1, characterized in that, The first heat exchanger (110) includes a first pipe section and a second pipe section; The first pipe section is connected in series to the first coolant circuit (200), and the second pipe section is connected in series to the air conditioning refrigerant circuit (100).

9. The range-extended vehicle thermal management system according to claim 1, characterized in that, The second heat exchanger (120) includes a third tube section and a fourth tube section; The third pipe section is connected in series to the second coolant circuit (300), and the fourth pipe section is connected in series to the air conditioning refrigerant circuit (100).

10. A range-extended vehicle, characterized in that, Includes the range-extended vehicle thermal management system as described in any one of claims 1-9.

Images