Thermal management system of vehicle and vehicle

Abstract

The invention relates to a heat management system of a vehicle and the vehicle, the heat management system comprises a range extender heat exchange part, a first driving pump, a first heat exchange part, a battery heat exchange part, a second heat exchange part and a second driving pump, the range extender heat exchange part exchanges heat with a range extender, and the first heat exchange part comprises a first heat exchange part and a second heat exchange part; the first heat exchange part exchanges heat with the second heat exchange part, the battery heat exchange part exchanges heat with the battery, the second heat exchange part comprises a third heat exchange part and a fourth heat exchange part, the third heat exchange part exchanges heat with the fourth heat exchange part, and the heat management system has a first mode and a second mode; in the first mode, the range extender heat exchange part, the first heat exchange part and the first driving pump are connected in series, the battery heat exchange part, the fourth heat exchange part, the second driving pump and the first heat exchange part are connected in series, in the second mode, the first heat exchange part, the battery heat exchange part, the fourth heat exchange part and the second driving pump are connected in series, and the range extender heat exchange part and the first driving pump are both decoupled from the first heat exchange part and the battery heat exchange part.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle thermal management, and in particular to a vehicle thermal management system and a vehicle. Background Art

[0002] The thermal management system of a vehicle can be used to manage the temperature of the power device of the vehicle to improve the working reliability, working efficiency and service life of the vehicle. Among them, the power device of the related art vehicle may include a battery, but the thermal management system of the related art vehicle is poor in managing the battery temperature. Summary of the invention

[0003] In view of this, the present application provides a thermal management system for a vehicle and a vehicle, which are better in managing battery temperature.

[0004] In a first aspect, the present application provides a thermal management system for a vehicle, the thermal management system comprising a range extender heat exchanger, a first drive pump, a first heat exchanger, a battery heat exchanger, a second heat exchanger and a second drive pump, the range extender heat exchanger is used to exchange heat with the range extender of the vehicle, the first heat exchanger comprises a first heat exchange part and a second heat exchange part, the first heat exchange part can exchange heat with the second heat exchange part, the battery heat exchanger is used to exchange heat with the battery of the vehicle, the second heat exchanger comprises a third heat exchange part and a fourth heat exchange part, the third heat exchange part can exchange heat with the fourth heat exchange part, the thermal management system has at least a first mode and a second mode, in the first mode, the range extender heat exchanger, the first heat exchange part and the first drive pump are connected in series, the battery heat exchanger, the fourth heat exchange part, the second drive pump and the first heat exchange part are connected in series, in the second mode, the first heat exchange part, the battery heat exchanger, the fourth heat exchange part and the second drive pump are connected in series, and the range extender heat exchanger and the first drive pump are decoupled from the first heat exchange part and the battery heat exchanger.

[0005] When the temperature of the battery is lower than the lower limit of the set normal operating temperature range, the battery needs to be heated. Therefore, the mode of the thermal management system can be switched to the first mode. In the first mode, the range extender heat exchanger, the first heat exchange part and the first drive pump are connected in series, the battery heat exchanger, the fourth heat exchanger, the second drive pump and the first heat exchanger are connected in series, and the fourth heat exchanger can absorb external heat through the third heat exchanger. Under this setting, when the range extender is also in the start-up state, the range extender also generates heat. The range extender heat exchanger can absorb the heat of the range extender, and the heat absorbed by the range extender heat exchanger can be transferred to the liquid medium. The first drive pump drives the liquid medium to flow from the range extender heat exchanger through the first heat exchanger to the battery heat exchanger. After the battery heat exchanger absorbs the heat of the liquid medium, the heat absorbed by the battery heat exchanger can be transferred to the battery. Under this setting, the battery is heated so that the temperature of the battery is within the normal operating temperature range, so that the battery can work reliably. Because the heat of the range extender is recovered for heating the battery. Compared with the related art, the thermal management system of the present application also has the advantage of energy saving in the first mode.

[0006] When the temperature of the battery is higher than the upper limit of the set normal operating temperature range, the battery needs to be cooled. Therefore, the mode of the thermal management system can be switched to the second mode. In the second mode, the first heat exchange part, the battery heat exchanger, the fourth heat exchanger and the second drive pump are connected in series, and the first heat exchanger can transfer heat to the second heat exchanger to the outside. Under this setting, the heat generated by the battery can be transferred to the battery heat exchanger, and the heat absorbed by the battery heat exchanger can be transferred to the liquid medium. Under the driving action of the second drive pump, the liquid medium flows from the battery heat exchanger to the first heat exchanger through the fourth heat exchanger. When the liquid medium passes through the first heat exchanger, the first heat exchanger absorbs the heat of the liquid medium, and the heat absorbed by the first heat exchanger is transferred to the outside through the second heat exchanger. The liquid medium that has absorbed the heat flows back to the battery heat exchanger to continue to absorb the heat of the battery. Under this setting, the battery is cooled so that the temperature of the battery is within the normal operating temperature range, so that the battery can work reliably.

[0007] Therefore, the thermal management system of the present application can better manage the temperature of the battery.

[0008] Optionally, in the first mode, the fourth heat exchange part is used to absorb external heat through the third heat exchange part, and / or the first heat exchange part is used to absorb external heat through the second heat exchange part.

[0009] Optionally, in the second mode, the first heat exchange part is used to transfer heat to the outside through the second heat exchange part, and / or the fourth heat exchange part is used to transfer heat to the outside through the third heat exchange part.

[0010] Optionally, the thermal management system also includes a first control valve, and the first control valve in the first mode and / or the first control valve in the second mode includes at least a first state; in the first state, the first control valve includes a first flow path and a second flow path, the first heat exchange part is connected in series with the battery heat exchange element through the first flow path, and the second drive pump is connected in series with the first heat exchange part through the second flow path.

[0011] Optionally, the thermal management system also has a third mode, in which the battery heat exchanger, the fourth heat exchange unit and the second drive pump are connected in series, and the range extender heat exchanger, the first heat exchange unit and the first drive pump are all decoupled from the battery heat exchanger; and / or, the thermal management system also has a fourth mode, in which the battery heat exchanger, the fourth heat exchange unit and the second drive pump are connected in series, the range extender heat exchanger and the first drive pump are all decoupled from the first heat exchange unit and the battery heat exchanger, and the first heat exchange unit is decoupled from the battery heat exchanger.

[0012] Optionally, the thermal management system also includes a second control valve. In a first mode, the second control valve is in a flow state, and the range extender heat exchanger is connected in series with the first heat exchange part through the second control valve. In a second mode, the second control valve is in a blocking state, and the range extender heat exchanger is decoupled from the first heat exchange part.

[0013] Optionally, the thermal management system further includes a compressor, a first expansion valve and a heat pump. In the first mode, the compressor, the third heat exchange unit, the first expansion valve and the heat pump are connected in series.

[0014] Optionally, the thermal management system further includes a compressor, a second expansion valve and a heat pump. In the second mode, the compressor, the heat pump, the second expansion valve and the second heat exchange unit are connected in series.

[0015] Optionally, the thermal management system further includes a radiator. In the first mode, the range extender heat exchanger, the radiator and the first drive pump are connected in series, and the radiator is connected in parallel with the first heat exchange part.

[0016] In a second aspect, the present application provides a vehicle, which includes a range extender, a battery, and a thermal management system. The range extender heat exchanger of the thermal management system is used to exchange heat with the range extender, and the battery heat exchanger is used to exchange heat with the battery. Since the thermal management system is the thermal management system described in the above content, the vehicle also includes the technical effects of the thermal management system described in the above content, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 A flow diagram of a range extender heat exchanger, a first drive pump, a first heat exchanger, a battery heat exchanger, a second heat exchanger, and a second drive pump in a specific embodiment;

[0019] Figure 2 A flow diagram of a first heat exchange element, a battery heat exchange element, a second heat exchange element, and a second driving pump in a specific embodiment;

[0020] Figure 3 A flow diagram of a range extender heat exchanger, a first drive pump, a first heat exchanger, a battery heat exchanger, a second heat exchanger, a second drive pump and a first control valve in a specific embodiment;

[0021] Figure 4 A flow diagram of a first heat exchange element, a battery heat exchange element, a second heat exchange element, a second drive pump and a first control valve in a specific embodiment;

[0022] Figure 5 A flow diagram of a range extender heat exchanger, a first drive pump, a first heat exchanger, a battery heat exchanger, a second heat exchanger, and a second drive pump in another specific embodiment;

[0023] Figure 6 A flow diagram of a range extender heat exchanger, a first drive pump, a first heat exchanger, a battery heat exchanger, a second heat exchanger, a second drive pump and a first control valve in another specific embodiment;

[0024] Figure 7 A flow diagram of a first heat exchange element, a battery heat exchange element, a second heat exchange element, and a second drive pump in another specific embodiment;

[0025] Figure 8 A flow diagram of a range extender heat exchanger, a first drive pump, a first heat exchanger, a battery heat exchanger, a second heat exchanger, a second drive pump and a first control valve in another specific embodiment;

[0026] Fig. 9 is a schematic diagram of a first control valve in a specific embodiment;

[0027] Fig.10 A flow diagram of a range extender heat exchanger, a first drive pump, a first heat exchanger, a battery heat exchanger, a second heat exchanger, a second drive pump, and a second control valve in a specific embodiment;

[0028] Fig.11 A flow diagram of a range extender heat exchanger, a first drive pump, a first heat exchanger, a battery heat exchanger, a second heat exchanger, a second drive pump, and a second control valve in another specific embodiment;

[0029] Fig.12ais a flow diagram of a third heat exchange unit, a compressor, a first expansion valve and a heat pump in a specific embodiment;

[0030] Figure 12b A flow diagram of a third heat exchange unit, a compressor, a first expansion valve, a heat pump and a third heat exchange element in a specific embodiment;

[0031] Fig.13a A flow diagram of a second heat exchange unit, a compressor, a second expansion valve and a heat pump in a specific embodiment;

[0032] Fig.13b A flow diagram of a second heat exchange unit, a compressor, a second expansion valve, a heat pump and a fourth heat exchange element in a specific embodiment;

[0033] Fig.13c A flow diagram of a second heat exchange part, a compressor, a second expansion valve, a heat pump, a fourth heat exchange element, a third expansion valve and a fifth heat exchange element in a specific embodiment;

[0034] Fig.14a A flow diagram of a range extender heat exchanger, a first drive pump, a first heat exchanger, a battery heat exchanger, a second heat exchanger, a second drive pump and a radiator in a specific embodiment;

[0035] Fig.14b A flow diagram of a range extender heat exchanger, a first drive pump and a radiator in a specific embodiment;

[0036] Fig.14c A flow diagram of a range extender heat exchanger, a first drive pump, a radiator and a motor heat exchanger in a specific embodiment;

[0037] Fig.14d A flow diagram of a range extender heat exchanger, a first drive pump, a radiator, a motor heat exchanger, a flow regulating valve and an intercooler in a specific embodiment;

[0038] Fig.15a is a flow diagram of a thermal management system in a first mode in a specific embodiment;

[0039] Fig.15b is a flow diagram of a thermal management system in a second mode in a specific embodiment;

[0040] Fig.15c for Fig.15a An enlarged schematic diagram of the middle eight-way valve;

[0041] Fig.15d for Fig.15b Enlarged schematic diagram of the eight-way valve.

[0042] Reference numerals:

[0043] 1-Range extender heat exchanger;

[0044] 2- first drive pump;

[0045] 3- first heat exchange element;

[0046] 3a-first heat exchange part;

[0047] 3b-second heat exchange part;

[0048] 4-Battery heat exchanger;

[0049] 5- second heat exchange element;

[0050] 5a-third heat exchange part;

[0051] 5b- fourth heat exchange section;

[0052] 6- second driving pump;

[0053] 7- first control valve;

[0054] 7a-First flow path;

[0055] 7b-second flow path;

[0056] 7c-third flow path;

[0057] 7d- fourth flow path;

[0058] 8- second control valve;

[0059] 9-Compressor;

[0060] 10- first expansion valve;

[0061] 11- Heat pump;

[0062] 12- second expansion valve;

[0063] 13- the third heat exchange element;

[0064] 14- fourth heat exchange element;

[0065] 15- third expansion valve;

[0066] 16- fifth heat exchange element;

[0067] 17- Radiator;

[0068] 17a-first heat dissipation element;

[0069] 17b- a second heat sink;

[0070] 17c-third heat sink;

[0071] 18-motor heat exchanger;

[0072] 19-Flow regulating valve;

[0073] 19a-first flow regulating valve;

[0074] 19b- second flow regulating valve;

[0075] 19c- third flow regulating valve;

[0076] 20-intercooler;

[0077] 21-Eight-way valve. DETAILED DESCRIPTION

[0078] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0079] It should be clear that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0080] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0081] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0082] It should be understood that the term "parallel" used in this article is a description of the relationship between related objects in guiding the flow of fluids. For example, A is connected in parallel with B, which means that the fluid is divided before passing through A and B, one branch passes through A, the other branch passes through B, and then the two branches converge into one fluid. Among them, A and B are connected in parallel, which does not limit only A and B to be connected in parallel, and can also include other situations, for example, A and C are connected in series, and the connected A and C are connected in parallel with B, or A and C are connected in parallel, and A, B and C are connected in parallel.

[0083] In a first aspect, the embodiments of the present application provide a vehicle thermal management system, which can manage the temperature of the vehicle's range extender, the temperature of the battery pack, and the temperature of the drive motor to improve the working reliability, working efficiency, and service life of the vehicle. The thermal management system can also manage the temperature of the vehicle's cabin to provide users with a good driving experience.

[0084] Among them, the range extender generally refers to a device in the vehicle that can provide additional electrical energy to increase the vehicle's mileage. In detail, the range extender includes an engine and a generator. The battery pack generally refers to a device in the vehicle that can provide pre-stored electrical energy to enable the vehicle to operate. In detail, the battery pack includes a case and a plurality of secondary batteries, and the secondary batteries are contained in the case. Secondary batteries, also known as rechargeable batteries or storage batteries, refer to batteries that can be recharged to activate active substances and continue to be used after the battery is discharged. It should be noted that the thermal management system's thermal management of the battery pack is mainly the thermal management of the batteries in the battery pack. The drive motor converts electrical energy into mechanical energy to enable the vehicle to operate. The drive motor includes a centralized drive motor, a wheel-side drive motor, and a hub drive motor.

[0085] Please refer to Figure 1~Figure 2 As shown, the thermal management system includes a range extender heat exchanger 1, a first drive pump 2, a first heat exchanger 3, a battery heat exchanger 4, a second heat exchanger 5, and a second drive pump 6. The range extender heat exchanger 1 is used to exchange heat with the range extender (not shown in the figure), the first drive pump 2 is used to drive the liquid medium (not shown in the figure) to circulate to achieve the effect of transferring heat, the first heat exchanger 3 includes a first heat exchange part 3a and a second heat exchange part 3b, the first heat exchange part 3a and the second heat exchange part 3b can exchange heat, the battery heat exchanger 4 is used to exchange heat with the battery (not shown in the figure), the second heat exchanger 5 includes a third heat exchange part 5a and a fourth heat exchange part 5b, the third heat exchange part 5a and the fourth heat exchange part 5b can exchange heat, and the second drive pump 6 is also used to drive the liquid medium (not shown in the figure) to flow to achieve the effect of transferring heat.

[0086] The liquid medium may include at least one of water, ethylene glycol, propylene glycol, acetone and dimethyl carbonate, and the liquid medium may also include at least one of fluorinated liquid and hydrocarbons with better insulation properties.

[0087] In addition, the battery heat exchanger 4 may include a liquid cooling plate (not shown in the figure), in which a liquid medium flows, and the outer wall of the liquid cooling plate contacts the battery to achieve heat exchange. Of course, the battery heat exchanger 4 may also include a liquid cooling box (not shown in the figure), in which the liquid medium and the battery are both in the liquid cooling box, and the battery is immersed in the liquid medium to achieve heat exchange.

[0088] The thermal management system should have at least Figure 1 The first mode shown and Figure 2 The second mode is shown.

[0089] When the battery temperature is lower than the lower limit of the set normal operating temperature range, the battery needs to be heated. Therefore, the mode of the thermal management system can be switched to the first mode. Figure 1In the first mode shown, the range extender heat exchanger 1, the first heat exchange part 3a and the first drive pump 2 are connected in series, and the battery heat exchanger 4, the fourth heat exchanger 5b, the second drive pump 6 and the first heat exchanger 3a are connected in series, and the fourth heat exchanger 5b can absorb external heat through the third heat exchanger 5a. Under this setting, on the one hand, when the third heat exchanger 5a absorbs external heat, the heat absorbed by the third heat exchanger 5a can be transferred to the liquid medium (not shown in the figure) through the fourth heat exchanger 5b, and the second drive pump 6 drives the liquid medium to flow from the fourth heat exchanger 5b to the battery heat exchanger 4 through the first heat exchanger 3a. On the other hand, when the range extender (not shown in the figure) is also in the start-up state, the range extender also generates heat. The range extender heat exchanger 1 can absorb the heat of the range extender, and the heat absorbed by the range extender heat exchanger 1 can be transferred to the liquid medium, and the first drive pump 2 drives the liquid medium to flow from the range extender heat exchanger 1 to the battery heat exchanger 4 through the first heat exchanger 3a. After the battery heat exchanger 4 absorbs the heat of the liquid medium, the heat absorbed by the battery heat exchanger 4 can be transferred to the battery (not shown in the figure). Under this setting, the battery is heated so that the temperature of the battery is within the normal operating temperature range, so that the battery can work reliably. Since the heat of the range extender is recycled to heat the battery. Therefore, compared with the related art, the thermal management system of the embodiment of the present application also has the advantage of energy saving in the first mode.

[0090] The heat absorbed by the third heat exchange unit 5a may come from at least one of the vehicle's electric heater (Air PTC) and the vehicle's compressor (a device for increasing the pressure and temperature of the refrigerant (also known as refrigerant or refrigerant)). Further, it should be noted that the compressor can participate in the thermal management of the cabin in addition to the battery. The following content of this article mainly describes "In the first mode, the heat absorbed by the third heat exchange unit 5a may come from the compressor" as an example.

[0091] In addition, in Figure 1 In the first mode shown, there may be no flowing heat-conducting medium passing through the second heat exchange part 3b. Therefore, the heat exchange effect between the first heat exchange part 3a and the second heat exchange part 3b is weaker than the heat exchange effect between the third heat exchange part 5a and the fourth heat exchange part 5b, that is, the temperature change of the liquid medium in the process of passing through the first heat exchange part 3a is relatively small, and the temperature change can be ignored.

[0092] In other embodiments, Figure 1 In the structure shown, a flowing heat-conducting medium may also pass through the second heat exchange part 3b, that is, the first heat exchange part 3a may be used to absorb external heat through the second heat exchange part 3b, and the external heat may also come from at least one of the electric heater and the compressor.

[0093] In other embodiments, Figure 1In the structure shown, there may be no flowing heat-conducting medium passing through the third heat exchange part 5a, and there may be no compressor involved in the heating process. Under the driving action of the first driving pump 2 and the second driving pump 6, the liquid medium that absorbs the heat of the range extender heats the battery through a circulating flow. This embodiment also has an energy-saving effect.

[0094] The subsequent content of this article about the first mode is mainly described by taking "the range extender provides heat to the battery heat exchanger 4 through the range extender heat exchanger 1 and the fourth heat exchange part 5b absorbs external heat through the third heat exchange part 5a" as an example.

[0095] When the battery temperature is higher than the upper limit of the set normal operating temperature range, the battery needs to be cooled. Therefore, the mode of the thermal management system can be switched to the second mode. Figure 2 In the second mode shown, the first heat exchange part 3a, the battery heat exchange element 4, the fourth heat exchange part 5b and the second drive pump 6 are connected in series, and the first heat exchange part 3a can transfer heat to the second heat exchange part 3b to the outside. Under this setting, the heat generated by the battery (not shown in the figure) can be transferred to the battery heat exchange element 4, and the heat absorbed by the battery heat exchange element 4 can be transferred to the liquid medium. Under the driving action of the second drive pump 6, the liquid medium flows from the battery heat exchange element 4 to the first heat exchange part 3a through the fourth heat exchange part 5b. When the liquid medium passes through the first heat exchange part 3a, the first heat exchange part 3a absorbs the heat of the liquid medium, and the heat absorbed by the first heat exchange part 3a is transferred to the outside through the second heat exchange part 3b. The liquid medium that has absorbed the heat flows back to the battery heat exchange element 4 to continue to absorb the heat of the battery. Under this setting, the battery is cooled so that the temperature of the battery is within the normal operating temperature range, so that the battery can work reliably.

[0096] The second heat exchange part 3b can transfer heat to at least one of the compressor of the vehicle and the dry cooler of the vehicle (a device that dissipates heat through external flowing air). The following content of this article is mainly described by taking "in the second mode, the second heat exchange part 3b can transfer heat to the compressor of the vehicle" as an example.

[0097] In addition, in Figure 2In the second mode shown, the range extender heat exchanger (not shown in the figure) and the first drive pump (not shown in the figure) are decoupled from the first heat exchange part 3a and the battery heat exchanger 4 (at least two interacting units are separated to make each unit independent). It should be noted that in this article, decoupling mainly refers to the fluids in the flow paths of the at least two decoupled objects not affecting each other. Under this setting, if the range extender is in the start-up state, the heat generated by the range extender will not be transferred to the battery, so that the battery can be reliably dissipated in the second mode. If the range extender is not in the start-up state, although the range extender does not generate heat, without the participation of the range extender heat exchanger 1 and the first drive pump 2, the liquid medium that absorbs the heat of the battery will mainly flow to the first heat exchange part 3a, and quickly dissipate heat through the second heat exchange part 3b and the compressor, that is, the heat dissipation efficiency is high.

[0098] Furthermore, in Figure 2 In the second mode shown, there may be no flowing heat-conducting medium passing through the third heat exchange part 5a. Therefore, the heat exchange effect between the third heat exchange part 5a and the fourth heat exchange part 5b is weaker than the heat exchange effect between the first heat exchange part 3a and the second heat exchange part, that is, the temperature change of the liquid medium in the process of passing through the fourth heat exchange part 5b is relatively small, and the temperature change can be ignored.

[0099] In other embodiments, Figure 2 In the structure shown, a flowing heat-conducting medium may also pass through the third heat exchange part 5a, that is, the fourth heat exchange part 5b may transfer heat to the outside through the third heat exchange part 5a. This embodiment can further improve the heat dissipation efficiency.

[0100] In other embodiments, Figure 2 In the structure shown, there may be no flowing heat-conducting medium passing through the second heat exchange part 3b, and there may be no compressor involved in the heat dissipation process. Under the driving action of the second driving pump 6, the liquid medium that absorbs the heat of the battery realizes natural heat dissipation through circulating flow. This embodiment has the effect of energy saving.

[0101] The subsequent content of this article about the second mode is mainly described by taking "the battery transfers heat to the outside through the battery heat exchange element 4, the first heat exchange part 3a and the second heat exchange part 3b" as an example.

[0102] According to the above content, it can be seen that the thermal management system of the embodiment of the present application can better manage the temperature of the battery, so that the battery can work reliably and improve the service life of the battery.

[0103] Optionally, see Figure 3As shown, the thermal management system further includes a first control valve 7. The first control valve 7 in the first mode includes at least a first state. In the first state, the first control valve 7 includes a first flow path 7a and a second flow path 7b. The first heat exchange part 3a is connected in series with the battery heat exchange element 4 through the first flow path 7a, and the second drive pump 6 is connected in series with the first heat exchange part 3a through the second flow path 7b. Under this setting, the thermal management system can be in the first mode by putting the first control valve 7 in the first state.

[0104] It should be noted that the first control valve 7 being in the first state is at least one condition for the thermal management system to be in the first mode.

[0105] In other embodiments (not shown), the thermal management system may not include the first control valve, the first heat exchange unit may be connected in series with the battery heat exchange element through a pipeline, and the second drive pump may be connected in series with the first heat exchange unit through a pipeline.

[0106] Optionally, see Figure 4 As shown, the thermal management system further includes a first control valve 7. The first control valve 7 in the second mode includes at least a first state. In the first state, the first control valve 7 includes a first flow path 7a and a second flow path 7b. The first heat exchange part 3a is connected in series with the battery heat exchange element 4 through the first flow path 7a, and the second drive pump 6 is connected in series with the first heat exchange part 3a through the second flow path 7b. Under this setting, the thermal management system can be in the second mode by putting the first control valve 7 in the first state.

[0107] It should be noted that the first control valve 7 being in the first state is at least one condition for the thermal management system to be in the second mode.

[0108] In other embodiments (not shown), the thermal management system may not include the first control valve, the first heat exchange unit may be connected in series with the battery heat exchange element through a pipeline, and the second drive pump may be connected in series with the first heat exchange unit through a pipeline.

[0109] exist Figure 3 and Figure 4 In the embodiment, the first control valve 7 may include a reversing valve (a directional control valve with two or more flow forms and two or more oil ports). When the first control valve 7 is in the first state, the first control valve 7 includes a first flow path 7a and a second flow path 7b. When the first control valve 7 is in other states, the first control valve 7 does not include the first flow path 7a and the second flow path 7b, but the first control valve 7 may include other flow paths, and the other flow paths make the circulation flow direction of the liquid medium different from the flow direction described above.

[0110] Or, in Figure 3 and Figure 4In the embodiment, the first control valve 7 may also include a stop valve. When the first control valve 7 is in the first state, the first flow path 7a and the second flow path 7b of the first control valve 7 are both in a flow state to meet the needs of realizing the first mode or the second mode. When the first control valve 7 is in other states, at least one of the first flow path 7a and the second flow path 7b of the first control valve 7 may be in a blocked state.

[0111] The following content of this article mainly introduces the first control valve 7 by taking "the first control valve 7 may include a reversing valve" as an example.

[0112] Optionally, see Figure 5 As shown, the thermal management system also has a third mode. In the third mode, the battery heat exchanger 4, the fourth heat exchange part 5b and the second drive pump 6 are connected in series, and the range extender heat exchanger 1, the first heat exchange part 3a and the first drive pump 2 are all decoupled from the battery heat exchanger 4.

[0113] In the first mode, the battery will be continuously heated. When the battery temperature rises to the normal operating temperature range, the thermal management system mode can be switched to the third mode. In the third mode, please refer to Figure 5 As shown, there is no heat transfer process between the range extender heat exchanger 1 and the battery heat exchanger 4. If the range extender is in the start-up state and generates heat, the heat of the range extender will not be transferred to the battery through the range extender heat exchanger 1 and the battery heat exchanger 4, so that the battery will not continue to be heated by the range extender, thereby reducing the possibility that the battery temperature is greater than the upper limit of the normal operating temperature range. If the range extender is in the stop state, the heat of the battery will not be transferred to the range extender through the battery heat exchanger 4 and the range extender heat exchanger 1, so that the possibility of the battery temperature being less than the lower limit of the normal operating temperature is low. Therefore, in the third mode, the temperature of the battery is not easily affected by the range extender, so that the temperature of the battery is reliably within the normal operating temperature range.

[0114] Correspondingly, in the third mode, you can also choose to stop the second drive pump 6, and then stop driving the liquid medium passing through the fourth heat exchange part 5b, you can also choose to stop running the vehicle's compressor, or you can choose to block the flow path about the third heat exchange part 5a. These three methods can reduce the heat exchange rate between the fourth heat exchange part 5b and the third heat exchange part 5a, so that the battery temperature is reliably within the normal operating temperature range.

[0115] Optionally, see Figure 6As shown, the first control valve 7 described above can participate in the third mode, and the first control valve 7 can be switched from the first state to the second state. In the second state, the first control valve 7 includes the third flow path 7c and the fourth flow path 7d, the second drive pump 6, the third flow path 7c, the battery heat exchanger 4 and the fourth heat exchange part 5b are connected in series, the fourth flow path 7d and the first heat exchange part 3a are connected in parallel, and the parallel fourth flow path 7d and the first heat exchange part 3a are connected in series with the series-connected range extender heat exchanger 1 and the first drive pump 2. Under this setting, the range extender heat exchanger 1, the first heat exchanger 3a and the first drive pump 2 can be decoupled from the battery heat exchanger 4.

[0116] Optionally, see Figure 7 As shown, the thermal management system also has a fourth mode, in which the battery heat exchanger 4, the fourth heat exchanger 5b and the second drive pump 6 are connected in series. The range extender heat exchanger (not shown in the figure) and the first drive pump (not shown in the figure) are both decoupled from the first heat exchanger 3a and the battery heat exchanger 4, and the first heat exchanger 3a is also decoupled from the battery heat exchanger 4.

[0117] In the second mode, the battery is continuously cooled. When the battery temperature drops to a normal operating temperature range, the thermal management system mode can be switched to the fourth mode. In the fourth mode, please refer to Figure 7 As shown, the second driving pump 6 drives the liquid medium from the battery heat exchanger 4 through the fourth heat exchange part 5b and then flows back to the battery heat exchanger 4 to realize a natural circulation heat dissipation process. There is no heat transfer process between the first heat exchange part 3a and the battery heat exchanger 4. The workload of the compressor associated with the second heat exchange part 3b can be relatively low, that is, it has an energy-saving effect.

[0118] Correspondingly, in the fourth mode, you can also choose to stop the second drive pump 6, and then stop driving the liquid medium passing through the fourth heat exchange part 5b, you can also choose to stop running the vehicle's compressor, or you can choose to block the flow path about the third heat exchange part 5a. These three methods can reduce the heat exchange rate between the fourth heat exchange part 5b and the third heat exchange part 5a, so that the battery temperature is reliably within the normal operating temperature range.

[0119] Optionally, see Figure 8 As shown, the first control valve 7 described above can participate in the fourth mode, and the first control valve 7 can be switched from the first state to the second state. In the second state, the first control valve 7 includes the third flow path 7c and the fourth flow path 7d, the second drive pump 6, the third flow path 7c, the battery heat exchanger 4 and the fourth heat exchanger 5b are connected in series, and the fourth flow path 7d and the first heat exchanger 3a are connected in series. Under this setting, the range extender heat exchanger (not shown in the figure) and the first drive pump (not shown in the figure) can be decoupled from the first heat exchanger 3a and the battery heat exchanger 4, and the first heat exchanger 3a can also be decoupled from the battery heat exchanger 4.

[0120] Optionally, see Fig. 9 As shown, the first control valve 7 may include a two-position four-way valve, and the first control valve 7 includes a first flow path 7a, a second flow path 7b, a third flow path 7c, and a fourth flow path 7d. When the first control valve 7 is in the first state, the first flow path 7a and the second flow path 7b are connected to the circulation flow path and participate in the heat circulation transfer process. When the first control valve 7 is in the second state, the third flow path 7c and the fourth flow path 7d are connected to the circulation flow path and participate in the heat circulation transfer process.

[0121] The two-position four-way valve may specifically be a solenoid valve, which is convenient for being controlled by a control circuit of the vehicle.

[0122] It should be noted that Fig. 9 The line with an arrow in the middle is used to identify the flow path, and the direction of the arrow does not absolutely represent the flow direction of the liquid medium passing through the flow path.

[0123] In other embodiments (not shown in the figures), the first control valve may also include a three-way valve, a four-way valve, or a valve with other positions. Correspondingly, the first control valve may include a five-way valve, a six-way valve, a seven-way valve, an eight-way valve, or a valve with other positions.

[0124] In other embodiments (not shown in the figures), the two-position four-way valve included in the first control valve is also replaced by a combination of two two-position three-way reversing valves.

[0125] Optionally, see Fig.10 As shown, the thermal management system also includes a second control valve 8. In the first mode, the second control valve 8 can be in a flow state, and the range extender heat exchanger 1 is connected in series with the first heat exchange part 3a through the second control valve 8, so that the liquid medium can flow from the range extender heat exchanger 1 to the first heat exchanger 3a. In the second mode, the second control valve 8 can be in a blocking state, so that the range extender heat exchanger 1 and the first drive pump 2 are decoupled from the first heat exchanger 3a and the battery heat exchanger 4. Under this setting, it is possible to change the Fig.10 The state of the second control valve 8 is shown so that the thermal management system switches between the first mode and the second mode.

[0126] It should be noted that the change in the state of the second control valve 8 is at least one condition for the thermal management system to switch between the first mode and the second mode.

[0127] Optionally, see Fig.11As shown, the thermal management system further includes a second control valve 8. In the third mode, the second control valve 8 can be in a flow state so that the range extender heat exchanger 1 can be connected in series with the first heat exchanger 3a through the second control valve 8. In the fourth mode, the second control valve 8 can be in a blocking state so that the range extender heat exchanger 1 and the first drive pump 2 are decoupled from the first heat exchanger 3a. In this setting, the range extender heat exchanger 1 and the first drive pump 2 can be connected in series with the first heat exchanger 3a. Fig.11 The state of the second control valve 8 is shown so that the thermal management system switches between the third mode and the fourth mode.

[0128] It should be noted that the change in the state of the second control valve 8 is at least one condition for the thermal management system to switch between the third mode and the fourth mode.

[0129] in, Fig.10 and Fig.11 The second control valve 8 in the embodiment may include a shut-off valve, which can be switched between a flow state and a blocking state. Fig.10 and Fig.11 The second control valve 8 can also be replaced by a reversing valve (not shown in the figure), which includes a two-position valve, a three-position valve or a valve with other positions. By changing the position of the flow path inside the reversing valve, the on-off state of the flow path between the range extender heat exchanger 1 and the first heat exchange part 3a can be controlled.

[0130] Optionally, see Fig.12a As shown, the thermal management system also includes a compressor 9, a first expansion valve 10 and a heat pump 11. In the first mode, the compressor 9, the third heat exchange unit 5a, the first expansion valve 10 and the heat pump 11 are connected in series. The first expansion valve 10 is a device that converts a medium-temperature and high-pressure liquid medium into a low-temperature and low-pressure gas medium. In the first mode, the heat pump 11 (Outdoor Heater Exchange, OHX) is a device that absorbs heat from the air outside the vehicle to achieve a heat absorption effect. In the circulating flow path where the compressor 9 is located, a refrigerant (also known as snow seed or refrigerant, a fluid used to transfer heat, which can be converted between gas and liquid) flows in the flow path. The refrigerant is in a medium-temperature and low-pressure gas state before flowing to the compressor 9. The compressor 9 can convert the refrigerant from a medium-temperature and low-pressure gas state to a high-temperature and high-pressure gas state. The refrigerant in a high-temperature and high-pressure gas state can dissipate heat in the third heat exchange unit 5a. After the third heat exchange unit 5a absorbs the heat of the refrigerant, it can transfer the heat to Figure 1 The fourth heat exchange part 5b shown in the figure can transfer the heat to the fourth heat exchange part 5b after absorbing the heat. Figure 1The battery heat exchanger 4 shown is used to heat the battery (not shown in the figure). When the refrigerant in the high-temperature and high-pressure gas state dissipates heat in the third heat exchange part 5a, the state of the refrigerant is also changed to a medium-temperature and high-pressure liquid state. When the refrigerant passes through the first expansion valve 10 from the third heat exchange part 5a, the state of the refrigerant is changed to a low-temperature and low-pressure gas state. When the refrigerant passes through the heat pump 11 from the first expansion valve 10, since the temperature of the refrigerant is lower than the temperature of the air outside the vehicle, the refrigerant can absorb the heat of the air outside the vehicle through the heat pump 11, so that the state of the refrigerant is changed to a medium-temperature and low-pressure gas state. The refrigerant in the medium-temperature and low-pressure gas state flows back to the compressor 9, thereby completing the process of heating the battery in the first mode described above. Since the heat pump 11 is used to absorb the heat of the air outside the vehicle for heating the battery, the workload of the compressor 9 can be reduced, so it has the advantage of energy saving.

[0131] Optionally, see Figure 12b As shown, the thermal management system further includes a third heat exchanger 13, the compressor 9, the third heat exchanger 13 and the third heat exchange part 5a are connected in series, and in the first mode, the third heat exchanger 13 is used to exchange heat with the vehicle cabin. In detail, the refrigerant flowing out of the compressor 9 is in a high-temperature and high-pressure gas state, and the refrigerant in the high-temperature and high-pressure gas state can successively dissipate heat in the third heat exchanger 13 and the third heat exchange part 5a. After absorbing the heat of the refrigerant, the third heat exchanger 13 can transfer the heat to the air in the vehicle cabin to achieve the effect of heating the vehicle cabin.

[0132] The third heat exchange element 13 can be mainly used to heat the front cabin of the vehicle. Correspondingly, the rear cabin of the vehicle can be heated by an electric heater (not shown in the figure).

[0133] In other embodiments, the third heat exchange element may also be used to heat the rear cabin of the vehicle.

[0134] Optionally, see Fig.13a As shown, the thermal management system also includes a compressor 9, a second expansion valve 12 and a heat pump 11. In the second mode, the compressor 9, the heat pump 11, the second expansion valve 12 and the second heat exchange part 3b are connected in series. In the second mode, the heat pump 11 is a device that transfers heat to the air outside the vehicle to achieve a heat dissipation effect. The refrigerant is in a medium-temperature, low-pressure gas state before flowing to the compressor 9. The compressor 9 can transform the refrigerant from a medium-temperature, low-pressure gas state to a high-temperature, high-pressure gas state. The refrigerant in a high-temperature, high-pressure gas state can dissipate heat in the heat pump 11. When the refrigerant in a high-temperature, high-pressure gas state dissipates heat in the heat pump 11, the state of the refrigerant is transformed into a medium-temperature, high-pressure liquid state. When the refrigerant passes through the second expansion valve 12 from the heat pump 11, the state of the refrigerant is transformed into a low-temperature, low-pressure gas state. When the refrigerant passes through the second heat exchange part 3b from the second expansion valve 12, the refrigerant can be absorbed by the second heat exchange part 3b as Figure 2The heat of the first heat exchange part 3a shown in the figure (comes from the battery), thereby achieving the effect of heat dissipation for the battery (not shown in the figure). When the refrigerant absorbs heat in the second heat exchange part 3b, the state of the refrigerant is changed to a medium-temperature low-pressure gas state. The refrigerant in the medium-temperature low-pressure gas state flows back to the compressor 9, thereby completing the process of heat dissipation for the battery in the second mode described above.

[0135] Optionally, see Fig.13b As shown, the thermal management system also includes a first expansion valve 10 and a fourth heat exchanger 14, the first expansion valve 10 and the fourth heat exchanger 14 are connected in series, and the first expansion valve 10 and the fourth heat exchanger 14 connected in series are then connected in parallel to the second expansion valve 12 and the second heat exchange part 3b connected in series. In the second mode, the fourth heat exchanger 14 is used to exchange heat with the vehicle's cabin. In detail, the refrigerant flowing out of the heat pump 11 may include at least two tributaries, one of which flows to the second expansion valve 12, and another tributary can flow to the first expansion valve 10. The state of the tributary passing through the first expansion valve 10 is transformed into a low-temperature and low-pressure gas state, and the tributary flowing out of the first expansion valve 10 flows to the fourth heat exchanger 14 and absorbs the heat of the vehicle's cabin through the fourth heat exchanger 14 to achieve the effect of cooling the vehicle's cabin. The state of the tributary passing through the fourth heat exchanger 14 is transformed into a medium-temperature and low-pressure gas state and flows back to the compressor 9.

[0136] The fourth heat exchange element 14 may be mainly used for cooling the rear cabin of the vehicle.

[0137] In other embodiments, the fourth heat exchange element may also be used to cool the front cabin of the vehicle.

[0138] Optionally, see Fig.13c As shown, the thermal management system further includes a third expansion valve 15 and a fifth heat exchanger 16, the third expansion valve 15 and the fifth heat exchanger 16 are connected in series, and the third expansion valve 15 and the fifth heat exchanger 16 connected in series are connected in parallel to the second expansion valve 12 and the second heat exchange part 3b connected in series. It can also be said that the third expansion valve 15 and the fifth heat exchanger 16 connected in series are connected in parallel to the first expansion valve 10 and the fourth heat exchanger 14 connected in series. In the second mode, the fifth heat exchanger 16 is also used to exchange heat with the cabin of the vehicle. In detail, the refrigerant flowing out of the heat pump 11 may include at least three tributaries, one tributary may flow to the second expansion valve 12, another tributary may flow to the first expansion valve 10, and another tributary may flow to the third expansion valve 15. The state of the tributary passing through the third expansion valve 15 is transformed into a low-temperature and low-pressure gas state, and the tributary flowing out of the third expansion valve 15 flows to the fifth heat exchanger 16 and absorbs the heat of the cabin of the vehicle through the fifth heat exchanger 16 to achieve the effect of cooling the cabin of the vehicle. The state of the branch flow passing through the fifth heat exchange element 16 changes to a medium-temperature low-pressure gas state and flows back to the compressor 9 .

[0139] Among them, either the fourth heat exchange element 14 or the fifth heat exchange element 16 can be used to cool the front cabin of the vehicle, while the other can be used to cool the rear cabin of the vehicle.

[0140] Optionally, see Fig.14a As shown, the thermal management system also includes a radiator 17. In the first mode, the range extender heat exchanger 1, the radiator 17 and the first drive pump 2 are connected in series. If the flow path where the range extender heat exchanger 1 and the first drive pump 2 are located is the main path, the relationship between the radiator 17 and the first heat exchange part 3a is a parallel relationship. Under this setting, the range extender heat exchanger 1 transfers the heat absorbed from the range extender (not shown in the figure) to the liquid medium. Under the driving action of the first drive pump 2, the liquid medium flowing out of the range extender heat exchanger 1 is divided into two tributaries. One of the tributaries flows to the first heat exchange part 3a to heat the battery heat exchanger 4, thereby heating the battery. The other tributary can flow to the radiator 17, and the radiator 17 can transfer the heat to the air outside the vehicle after absorbing the heat of the tributary. Generally, when the range extender generates a large amount of heat (exceeding the heat required by the battery), the radiator 17 can be used to transfer part of the heat of the range extender to the outside of the vehicle, so that the temperature of the range extender is within the normal operating temperature range, so that the range extender can operate reliably.

[0141] In other embodiments (not shown in the figures), when the thermal management system is in any of the second mode, the third mode and the fourth mode, the range extender heat exchanger, the radiator and the first drive pump may also be connected in series to meet the heat dissipation requirements of the range extender in the started state in any mode.

[0142] Wherein, the radiator may include at least two heat sinks, and the relationship between the at least two heat sinks includes series connection or parallel connection. If the radiator includes at least three heat sinks, the relationship between the at least three heat sinks includes series connection, parallel connection or mixed connection (including both series connection and mixed connection). Under this setting, there is a large heat dissipation area between the multiple heat sinks and the external air of the vehicle, which is conducive to improving the heat dissipation efficiency of the radiator.

[0143] Optionally, see Fig.14bAs shown, the radiator 17 may include a first radiator 17a, a second radiator 17b and a third radiator 17c. The liquid medium flowing out of the range extender heat exchanger 1 can be divided into two branches after passing through the first radiator 17a, one of which flows to the first drive pump 2 and then flows back to the range extender heat exchanger 1, and the other flows to the second radiator 17b. The branch flowing out of the second radiator 17b can be further divided into two branches, one of which flows back to the range extender heat exchanger 1 via the third radiator 17c and the first drive pump 2 in sequence, and the other bypasses the third radiator 17c and flows back to the range extender heat exchanger 1 via the first drive pump 2. Under this setting, the heat dissipation efficiency of the radiator 17 is high, and it can better meet the heat dissipation requirements of the range extender.

[0144] Please refer to Fig.14c As shown, the thermal management system also includes a motor heat exchanger 18, which is connected in parallel with the third heat sink 17c. The branch flow flowing out of the second heat sink 17b and bypassing the third heat sink 17c can also pass through the motor heat exchanger 18. The motor heat exchanger 18 is used to transfer heat to the heat dissipation structure of the vehicle's drive motor (not shown in the figure), and the heat dissipation structure of the drive motor can transfer heat to the air outside the vehicle. Under this setting, the heat dissipation efficiency of the radiator 17 combined with the motor heat exchanger 18 is high, which can better meet the heat dissipation requirements of the range extender.

[0145] In addition, the number of motor heat exchangers 18 and the number of drive motors may be the same. When the front wheels (not shown) of the vehicle are equipped with front drive motors, the front drive motors may be provided with corresponding motor heat exchangers 18. When the rear wheels (not shown) of the vehicle are equipped with rear drive motors, the rear drive motors may be provided with corresponding motor heat exchangers 18.

[0146] Optionally, see Fig.14d As shown, the thermal management system also includes a flow regulating valve 19, which includes a first flow regulating valve 19a, a second flow regulating valve 19b and a third flow regulating valve 19c. The first flow regulating valve 19a, the second flow regulating valve 19b and the third flow regulating valve 19c are used to adjust the flow of the branch of each branch, and can even change the connection relationship between the heat sinks in the radiator 17 (for example, series connection, parallel connection and mixed connection). Under this setting, the heat dissipation efficiency of the radiator 17 can be adjusted to meet the dynamic heat dissipation requirements of the range extender.

[0147] Optionally, the first flow regulating valve 19a, the second flow regulating valve 19b and the third flow regulating valve 19c are all in a flow state, and the flow settings of the first flow regulating valve 19a, the second flow regulating valve 19b and the third flow regulating valve 19c may be the same or different.

[0148] Optionally, at least one of the first flow regulating valve 19a, the second flow regulating valve 19b and the third flow regulating valve 19c is in a blocking state.

[0149] Optionally, see Fig.14d As shown, the thermal management system also includes an intercooler 20, which is connected in series with the third flow regulating valve 19c, and the branch flow through the third flow regulating valve 19c can flow to the intercooler 20. Since the branch flow through the third flow regulating valve 19c has previously dissipated heat successively at the first heat sink 17a, the second heat sink 17b and the third heat sink 17c, the temperature of the branch flow through the third flow regulating valve 19c is lower than the temperature of the branch flow through other heat sinks. The branch flow through the third flow regulating valve 19c absorbs heat when passing through the intercooler 20, and the heat of the intercooler 20 comes from the air used to flow to the engine in the range extender. Under this setting, the air used to flow to the engine in the range extender can be cooled by the branch flow through the third flow regulating valve 19c through the intercooler 20, so that the density of the air used to flow to the engine in the range extender is increased, which is conducive to increasing the intake volume of the engine in the range extender, so that the working efficiency of the engine is higher.

[0150] The intercooler 20 may be also known as an intermediate cooler, an interstage cooler or a water-to-air intercooler.

[0151] Optionally, the thermal management system of the embodiment of the present application further includes at least a plurality of fans (not shown in the figure). Some fans are used to provide a high-velocity airflow to the third heat exchange element 13 or the fifth heat exchange element 16, some fans are used to provide a high-velocity airflow to the fourth heat exchange element 14, and some fans are used to provide a high-velocity airflow to the heat pump 11 and the radiator 17, so as to improve the heat exchange efficiency of the thermal management system.

[0152] According to the above content, the structure of the thermal management system in the first mode in a specific embodiment can be as follows: Fig.15a As shown, the first control valve 7 is in the first state. Fig.15a In the figure, the flow path drawn by the dotted line represents that the fluid in the flow path is in a non-flowing state, and the flow path drawn by the solid line represents that the fluid in the flow path is in a flowing state. The working process of the thermal management system in the first mode has been described above and will not be repeated here.

[0153] Among them, Fig.15a The first control valve 7 shown can also be switched to the second state to switch the thermal management system from the first mode to the third mode. The working process of the thermal management system in the third mode has been described above and will not be repeated here.

[0154] According to the above content, the structure of the thermal management system in the second mode in a specific embodiment can be as follows: Fig.15bAs shown, the first control valve 7 is in the first state. Fig.15b In the figure, the flow path drawn by the dotted line represents that the fluid in the flow path is in a non-flowing state, and the flow path drawn by the solid line represents that the fluid in the flow path is in a flowing state. The working process of the thermal management system in the second mode has been described above and will not be repeated here.

[0155] Among them, Fig.15b The first control valve 7 shown can also be switched to the second state to switch the thermal management system from the second mode to the fourth mode. The working process of the thermal management system in the fourth mode has been described above and will not be repeated here.

[0156] according to Fig.15a and Fig.15b As shown, the thermal management system may further include an eight-way valve 21, by changing the flow state of the eight-way valve 21 so that the flow state of the flow paths of the compressor 9, the heat pump 11 and each electronic expansion valve is changed, thereby enabling the thermal management system to switch between the first mode and the second mode, or enabling the thermal management system to switch between the third mode and the fourth mode.

[0157] The eight-way valve 21 may include a port A, a port B, a port C, a port D, a port E, a port F, a port G, a port H, and a port I. To further illustrate Fig.15a For the status of the eight-way valve 21, please refer to Fig.15c As shown, interface A is connected to interface B, interface C is connected to interface F, interface H is connected to interface G. Interface D is connected to interface E. To further illustrate Fig.15b For the status of the eight-way valve 21, please refer to Fig.15d As shown, interface G is connected to interface F, and interface A is connected to interface D.

[0158] In other embodiments (not shown in the figures), the eight-way valve 21 may be replaced by a nine-way valve or a ten-way valve, or the eight-way valve 21 may be replaced by a combination structure of at least two reversing valves.

[0159] It should be noted that the structure of the thermal management system in the embodiment of the present application is not limited to the structure shown in the drawings, and other structural parts may be connected in series between two structural parts in any of the drawings, and other structural parts may be connected in parallel between two structural parts in any of the drawings. The other structural parts connected in series or in parallel may be other valves such as on-off valves, one-way valves, pressure valves, gas-liquid separation valves, or detection elements such as temperature measuring parts or pressure measuring parts.

[0160] In the second aspect, an embodiment of the present application provides a vehicle, which includes a range extender, a battery, and a thermal management system. Among them, the range extender heat exchanger of the thermal management system is used to exchange heat with the range extender, and the battery heat exchanger is used to exchange heat with the battery. Since the thermal management system is the thermal management system described in the above content, the vehicle of the embodiment of the present application also includes the technical effects of the thermal management system described in the above content, which will not be repeated here.

[0161] The range extender and the battery have been introduced above and will not be described again here. Specifically, the power type of the vehicle in the embodiment of the present application is an extended-range electric vehicle.

[0162] The vehicle in the embodiment of the present application may be a vehicle with a mobile function, such as a car, a motorcycle, a truck, a tractor, an all-terrain vehicle or an engineering vehicle.

[0163] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A thermal management system for a vehicle, characterized in that: The thermal management system comprises: A range extender heat exchanger, used to exchange heat with the vehicle's range extender; A first drive pump; A first heat exchange element, comprising a first heat exchange portion and a second heat exchange portion, wherein the first heat exchange portion can exchange heat with the second heat exchange portion; A battery heat exchanger, used to exchange heat with the vehicle's battery; A second heat exchange element, comprising a third heat exchange portion and a fourth heat exchange portion, wherein the third heat exchange portion can exchange heat with the fourth heat exchange portion; A second drive pump; The thermal management system has at least a first mode and a second mode; In the first mode, the range extender heat exchanger, the first heat exchange unit and the first drive pump are connected in series, and the battery heat exchanger, the fourth heat exchange unit, the second drive pump and the first heat exchange unit are connected in series; In the second mode, the first heat exchange part, the battery heat exchange element, the fourth heat exchange part and the second driving pump are connected in series, and the range extender heat exchange element and the first driving pump are decoupled from the first heat exchange part and the battery heat exchange element.

2. The thermal management system of a vehicle according to claim 1, characterized in that: In the first mode, the fourth heat exchange part is used to absorb external heat through the third heat exchange part, and / or the first heat exchange part is used to absorb external heat through the second heat exchange part.

3. The thermal management system for a vehicle according to claim 1, characterized in that: In the second mode, the first heat exchange part is used to transfer heat to the outside through the second heat exchange part, and / or the fourth heat exchange part is used to transfer heat to the outside through the third heat exchange part.

4. The thermal management system for a vehicle according to claim 1, characterized in that: The thermal management system further comprises a first control valve, the first control valve in the first mode and / or the first control valve in the second mode comprising at least a first state; In the first state, the first control valve includes a first flow path and a second flow path, the first heat exchange portion is connected in series with the battery heat exchange element through the first flow path, and the second drive pump is connected in series with the first heat exchange portion through the second flow path.

5. The thermal management system for a vehicle according to claim 1, characterized in that: The thermal management system further has a third mode, in which the battery heat exchanger, the fourth heat exchange unit and the second drive pump are connected in series, and the range extender heat exchanger, the first heat exchange unit and the first drive pump are all decoupled from the battery heat exchanger; And / or, the thermal management system also has a fourth mode, in which the battery heat exchanger, the fourth heat exchange unit and the second drive pump are connected in series, the range extender heat exchanger and the first drive pump are decoupled from the first heat exchange unit and the battery heat exchanger, and the first heat exchange unit is decoupled from the battery heat exchanger.

6. The thermal management system for a vehicle according to claim 1, characterized in that: The thermal management system also includes a second control valve. In the first mode, the second control valve is in a flow state, and the range extender heat exchanger is connected in series with the first heat exchange part through the second control valve. In the second mode, the second control valve is in a blocking state, and the range extender heat exchanger is decoupled from the first heat exchange part.

7. The vehicle thermal management system according to any one of claims 1 to 5, characterized in that: The thermal management system further includes a compressor, a first expansion valve, and a heat pump. In the first mode, the compressor, the third heat exchange unit, the first expansion valve, and the heat pump are connected in series.

8. The vehicle thermal management system according to any one of claims 1 to 5, characterized in that: The thermal management system further includes a compressor, a second expansion valve, and a heat pump. In the second mode, the compressor, the heat pump, the second expansion valve, and the second heat exchange unit are connected in series.

9. The thermal management system for a vehicle according to any one of claims 1 to 5, characterized in that: The thermal management system further includes a radiator. In the first mode, the range extender heat exchange component, the radiator and the first drive pump are connected in series, and the radiator is connected in parallel with the first heat exchange unit.

10. A vehicle, characterized in that: The vehicle comprises: Range extender; Battery; A thermal management system, wherein the thermal management system is the thermal management system according to any one of claims 1 to 9; Among them, the range extender heat exchanger of the thermal management system is used to exchange heat with the range extender, and the battery heat exchanger is used to exchange heat with the battery.

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