Thermal management system and vehicle

Abstract

The utility model provides a thermal management system and vehicle, thermal management system includes: battery flow path, electric drive electric control flow path, first flow path, second flow path, heat exchange flow path and seven-way valve, battery flow path is used for exchanging heat with battery, electric drive electric control flow path is used for exchanging heat with electric drive electric control subassembly, first flow path is equipped with intermediate temperature radiator, second flow path is equipped with intermediate temperature radiator, and the seven-way valve is equipped with intermediate temperature radiator. The heat exchange flow path comprises a first heat exchanger, and the first heat exchanger is selectively suitable for heat exchange between the heat exchange flow path and a refrigerant flow path of the air conditioning system; the seven-way valve is used for selectively connecting at least one of the battery flow path and the electric drive and electric control flow path to the heat exchange flow path in series and is further used for connecting at least one of the battery flow path and the electric drive and electric control flow path to the first flow path in series and / or the second flow path in series. According to the thermal management system, switching of multiple modes can be achieved through the seven-way valve, different modes can be selected according to the actual situation, the selectivity is more, and the heat exchange efficiency of the cooling liquid to the battery or the electric drive and electric control assembly is improved.

Description

Technical Field

[0001] This utility model relates to the field of thermal management technology, and in particular to a thermal management system and vehicle. Background Technology

[0002] The thermal management system of hybrid vehicles is mainly designed to keep all components of the vehicle operating at the optimal temperature in order to achieve fuel efficiency and stable operation.

[0003] Thermal management systems can be used to regulate battery temperature and cool the electric drive and control components in the electric drive and control flow path. However, existing thermal management systems have limited switchable modes and low heat exchange efficiency, leaving room for improvement. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a thermal management system that can switch between multiple modes via a seven-way valve, allowing selection of different modes according to actual conditions, thus providing greater choice and improving the heat exchange efficiency of the coolant to the battery or electric drive and control components.

[0005] The thermal management system according to an embodiment of the present invention includes: a battery flow path, an electric drive and electric control flow path, a first flow path, a second flow path, a heat exchange flow path, and a seven-way valve. The battery flow path is used for heat exchange with a battery, and the electric drive and electric control flow path is used for heat exchange with an electric drive and electric control component. The first flow path is provided with a medium-temperature radiator, and the heat exchange flow path includes a first heat exchanger. The first heat exchanger is selectively adapted to exchange heat between the heat exchange flow path and the refrigerant flow path of an air conditioning system. The seven-way valve is used to selectively connect at least one of the battery flow path and the electric drive and electric control flow path in series with the heat exchange flow path, and is also used to connect at least one of the battery flow path and the electric drive and electric control flow path in series with the first flow path and / or in series with the second flow path.

[0006] In this embodiment of the invention, when the battery flow path is connected to the first flow path and the electric drive and control flow path, a medium-temperature radiator in the first flow path is used to dissipate heat from the battery and the electric drive and control components in the electric drive and control flow path; or when the first flow path is only connected to the electric drive and control flow path, a medium-temperature radiator is used to dissipate heat from the electric drive and control components; or when the second flow path is only connected to the electric drive and control flow path, coolant is used to dissipate heat from the electric drive and control components; of course, it is also possible to use the residual heat of the electric drive and control flow path to heat the battery only when the electric drive and control flow path is connected to the battery flow path; in addition, it is also possible to connect the electric drive and control flow path to the heat exchange flow path. When the heat exchange flow path exchanges heat with the refrigerant of the air conditioning system, the temperature decreases and the electric drive and control components of the electric drive and control flow path can be cooled independently. Alternatively, when the electric drive and control flow path is connected to the heat exchange flow path and the first flow path is connected to the electric drive and control flow path, the heat exchange flow path can work together with the medium-temperature radiator of the first flow path to cool and dissipate heat from the electric drive and control components of the electric drive and control flow path. In other words, the embodiments of this utility model can be switched to multiple different modes through a seven-way valve, making the cooling of the electric drive and control components and the battery more diversified, and can also heat the battery, thereby achieving more selectivity in heat exchange and improving heat exchange efficiency.

[0007] According to the thermal management system of this utility model embodiment, the seven-way valve includes a first valve port, a second valve port, a third valve port, a fourth valve port, a fifth valve port, a sixth valve port, and a seventh valve port; when the first valve port and the second valve port are connected, the second flow path is connected to the electric drive and electric control flow path, so that the electric drive and electric control flow path cools the electric drive and electric control component, and / or, when the first valve port and the third valve port are connected, the first flow path is connected to the electric drive and electric control flow path, so that the medium-temperature radiator cools the electric drive and electric control component; the seventh valve port and the fourth valve port are connected, and the fifth valve port and the sixth valve port are connected, the heat exchange flow path is connected in series with the battery flow path, and the heat exchange flow path cools the battery in the battery flow path after exchanging heat with the refrigerant.

[0008] According to the thermal management system of this utility model embodiment, the first valve port and the seventh valve port are connected; when the sixth valve port and the second valve port are connected and the fourth valve port and the fifth valve port are connected, the refrigerant after heat exchange in the heat exchange path dissipates heat from the electric drive and electric control components in the electric drive and electric control path, and the battery path cools the battery; or, when the sixth valve port and the third valve port are connected and the fourth valve port and the fifth valve port are connected, the refrigerant after heat exchange in the heat exchange path and the medium-temperature radiator can jointly cool the electric drive and electric control components in the electric drive and electric control path, and the battery path cools the battery.

[0009] According to the thermal management system of this utility model embodiment, when the first valve port and the seventh valve port are connected, the second valve port and the fourth valve port are connected, and the fifth valve port and the sixth valve port are connected, the electric drive and control flow path and the battery flow path are connected, and the heat of the electric drive and control flow path is suitable for application to the battery flow path to heat the battery; or, when the first valve port and the seventh valve port are connected, the third valve port and the fourth valve port are connected, and the fifth valve port and the sixth valve port are connected, the medium-temperature radiator and the refrigerant of the air conditioning system jointly cool the battery and the electric drive and control components; or, when the first valve port and the seventh valve port are connected, the second valve port and the third valve port are both connected to the fourth valve port, and the fifth valve port and the sixth valve port are connected, the coolant is diverted to the second flow path and the first flow path where the medium-temperature radiator is located, and the medium-temperature radiator and the refrigerant of the air conditioning system jointly cool the battery and the electric drive and control components.

[0010] The thermal management system according to an embodiment of the present invention further includes a control valve. The electrically driven and electrically controlled flow path is provided with a first water pump. The control valve includes a first inlet, a first outlet, and a second inlet. The outlet of the first water pump is connected to the inlet of the electrically driven and electrically controlled component. One end of the first flow path is connected to the third valve port of the seven-way valve, and the other end is connected to the first inlet of the control valve. The first outlet is connected to the first inlet and to the inlet of the first water pump. One end of the second flow path is connected to the second valve port of the seven-way valve, and the other end is connected to the second inlet.

[0011] According to the thermal management system of this utility model embodiment, the electric drive and control flow path includes a first branch and a second branch distributed in parallel. The first branch is provided with at least one of an energy distribution module, a water-cooled intercooler, and a transmission oil cooler. The second branch is provided with at least one of an audio-visual entertainment host, an intelligent driving domain controller, a DC charger, and a rear-drive module.

[0012] According to the thermal management system of this utility model embodiment, the second branch includes a first three-way pipe, a throttling pipe, and a second three-way pipe. One inlet of the first three-way pipe is connected to the outlet of the audio-visual entertainment host, and one outlet is connected to the inlet of the throttling pipe. The outlet of the throttling pipe is connected to one inlet of the second three-way pipe, and one outlet of the second three-way pipe is connected to the inlet of the DC charger. The other outlet of the first three-way pipe and the other inlet of the second three-way pipe are connected to the intelligent driving domain controller.

[0013] According to the thermal management system of this utility model embodiment, the battery flow path further includes a liquid-gas separator. One inlet of the liquid-gas separator is connected to an expansion tank. Coolant flows through one outlet of the liquid-gas separator to the coolant inlet of the battery, and through the coolant outlet of the battery to the other inlet of the liquid-gas separator.

[0014] According to the thermal management system of this utility model embodiment, the medium-temperature radiator is located at the front grille of the vehicle.

[0015] This utility model embodiment also proposes a vehicle including the above-described thermal management system.

[0016] The advantages of the vehicle compared to existing technologies and the thermal management system compared to existing technologies are the same, and will not be elaborated here.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a schematic diagram of the flow path of the thermal management system according to an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the flow path of the seven-way valve of the thermal management system in this embodiment of the present invention when switching to mode 1;

[0021] Figure 3 This is a schematic diagram of the flow path of the seven-way valve of the thermal management system in this embodiment of the present invention when switching to mode 2;

[0022] Figure 4 This is a schematic diagram of the flow path of the seven-way valve of the thermal management system in this embodiment of the present invention when switching to mode 3;

[0023] Figure 5 This is a schematic diagram of the flow path of the seven-way valve of the thermal management system in this embodiment of the present invention when switching to mode 4;

[0024] Figure 6 This is a schematic diagram of the flow path of the seven-way valve of the thermal management system in this embodiment of the present invention when switching to mode 5;

[0025] Figure 7 This is a schematic diagram of the flow path of the seven-way valve of the thermal management system in this embodiment of the present invention when switching to mode 6;

[0026] Figure 8 This is a schematic diagram of the flow path of the seven-way valve of the thermal management system in this embodiment of the present invention when switching to mode 7;

[0027] Figure 9 This is a schematic diagram of the flow path of the seven-way valve of the thermal management system in this embodiment of the present invention when switching to mode 8;

[0028] Figure 10 This is a schematic diagram of the structure of the seven-way valve according to an embodiment of the present invention.

[0029] Figure label:

[0030] Thermal management system 100, electric drive and control components 101,

[0031] Electric drive and electronic control flow path 1, first branch 11, energy distribution module 111, water-cooled intercooler 112, transmission oil cooler 113, second branch 12, audio-visual entertainment host 121, first tee pipe 122, second tee pipe 123, intelligent driving domain controller 124, DC charger 125, rear drive module 126, throttle tube 127.

[0032] Battery flow path 2, battery 21, second water pump 22, liquid-gas separator 23, second heat exchanger 24.

[0033] Heat exchange path 3, first heat exchanger 31,

[0034] 4. Seven-way valve, 41. First valve port, 42. Second valve port, 43. Third valve port, 44. Fourth valve port, 45. Fifth valve port, 46. Sixth valve port, 47. Seventh valve port, 5. First flow path, 5. Medium temperature radiator, 51. Second flow path, 6. Control valve, 7. First inlet, 71. First outlet, 72. Second inlet, 73. Third inlet, 74. First water pump, 8. Expansion tank, 9. Detailed Implementation

[0035] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0036] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] The following is for reference. Figures 1-10 The thermal management system 100 according to an embodiment of the present invention can, under certain operating conditions, not only cool the electric drive and control component 101 using the medium-temperature radiator 51, but also cool the battery 21. It can also cool the electric drive and control flow path 1 and the battery flow path 2 using the heat exchange flow path 3, and can also heat up the battery 21 using the heat generated by the electric drive and control component 101. This allows for more selective heat exchange of the battery 21 or the electric drive and control component 101, thereby improving heat exchange efficiency.

[0039] like Figures 1-10 As shown, the thermal management system 100 of this utility model embodiment includes: a battery flow path 2, an electric drive and control flow path 1, a first flow path 5, a second flow path 6, a heat exchange flow path 3, and a seven-way valve 4.

[0040] Among them, the battery flow path 2 is used for heat exchange with the battery 21, the electric drive and control flow path 1 is used for heat exchange with the electric drive and control assembly 101, the first flow path 5 is provided with a medium-temperature radiator 51, the heat exchange flow path 3 includes a first heat exchanger 31, the first heat exchanger 31 is selectively adapted to exchange heat between the heat exchange flow path 3 and the refrigerant flow path of the air conditioning system; the seven-way valve 4 is used to selectively connect at least one of the battery flow path 2 and the electric drive and control flow path 1 in series with the heat exchange flow path 3, and is also used to connect at least one of the battery flow path 2 and the electric drive and control flow path 1 in series with the first flow path 5 and / or in series with the second flow path 6.

[0041] In practice, refer to Figure 1 As shown, the electric drive and control flow path 1 can be selectively connected to the first flow path 5 and the second flow path 6, and can also be selectively connected to the battery flow path 2. The heat exchange flow path 3 can be selectively connected to the battery flow path 2 and the electric drive and control flow path 1.

[0042] Specifically, such as Figure 2 As shown, when cooling the battery 21, the heat exchange path 3 and the battery path 2 are connected. The first heat exchanger 31 is a Chiller heat exchanger. The internal body of the Chiller heat exchanger is composed of layers of plate heat exchange fins stacked together. It is divided into a refrigerant circuit and a coolant circuit. The coolant and refrigerant flow in the form of convection. Heat is transferred from the coolant to the refrigerant, thereby achieving heat exchange. After the first heat exchanger 31 of the heat exchange path 3 exchanges heat with the refrigerant of the air conditioning system, the temperature of the heat exchange path 3 is reduced and the battery 21 can be cooled. At this time, the electric drive and control path 1 and the second path 6 are connected in series, so that the coolant of the electric drive and control path 1 cools the electric drive and control component 101. This is mode 1, which means that the first heat exchanger 31 can be used to exchange heat with the refrigerant of the air conditioning system and then be used to cool the battery 21.

[0043] Additionally, refer to Figure 3 As shown, the electric drive and control flow path 1 and the first flow path 5 can also be connected in series so that the medium-temperature heat sink 51 can dissipate heat from the electric drive and control components 101. The way to cool the battery 21 can still be by connecting the heat exchange flow path 3 and the battery flow path 2. The heat exchange flow path 3 and the refrigerant can be cooled by exchanging heat and cooling through the first heat exchanger 31. This is mode 2.

[0044] Or refer to Figure 4As shown, the electric drive and control flow path 1 can be connected to the first flow path 5 and the second flow path 6 simultaneously. That is, the coolant flows to the first flow path 5 and the second flow path 6 in proportion, so that the medium-temperature radiator 51 can be used to dissipate heat from the electric drive and control components 101. However, the heat dissipation method at this time is lower than the method in mode 2 above where the electric drive and control flow path 1 is only connected to the first flow path 5. That is, the temperature of the electric drive and control components 101 is adjusted by the proportion of coolant flowing to the first flow path 5 and the second flow path 6. The cooling method of the battery 21 remains unchanged. It still uses the first heat exchanger 31 to exchange heat with the refrigerant of the air conditioning system, so that the coolant in the battery flow path 2 cools the battery 21. This is mode 3.

[0045] Or refer to Figure 5 As shown, the electric drive and control flow path 1 is connected in series with the heat exchange flow path 3 and the second flow path 6. The battery flow path 2 cools the battery 21 through its own coolant. After the heat exchange flow path 3 exchanges heat with the refrigerant of the air conditioning system, the temperature of the heat exchange flow path 3 is reduced. The reduced temperature can dissipate heat and cool the electric drive and control components 101 of the electric drive and control flow path 1. This is mode 4.

[0046] Or refer to Figure 6 As shown, the electric drive and control flow path 1 is connected in series with the heat exchange flow path 3, the heat exchange flow path 3 is connected in series with the first flow path 5, the outlet of the first flow path 5 is connected to the inlet of the electric drive and control flow path 1, the electric drive and control component 101 is cooled by the medium temperature radiator 51, and the battery flow path 2 cools the battery 21 by its own coolant, which is mode 5.

[0047] Or refer to Figure 7 As shown, the electric drive and control flow path 1 and the heat exchange flow path 3 are connected in series, the heat exchange flow path 3 and the battery flow path 2 are connected in series, the battery flow path 2 and the second flow path 6 are connected in series, and the outlet of the second flow path 6 is connected to the inlet of the electric drive and control flow path 1. At this time, the first heat exchanger 31 does not need to exchange heat with the refrigerant of the air conditioning system. At this time, the first heat exchanger 31 only serves the function of pipeline flow. The battery flow path 2 can use the waste heat of the electric drive and control component 101 of the electric drive and control flow path 1 to heat the battery 21, so as to achieve reasonable utilization of heat. This is mode 6.

[0048] Or refer to Figure 8 As shown, the electric drive and control flow path 1 and the heat exchange flow path 3 are connected in series, and the heat exchange flow path 3 and the battery flow path 2 are connected in series. The battery flow path 2 and the first flow path 5 are connected in series. The outlet of the first flow path 5 is connected to the inlet of the electric drive and control flow path 1. At this time, after the heat exchange flow path 3 exchanges heat with the refrigerant of the air conditioning system and cools down, the medium temperature radiator 51 of the heat exchange flow path 3 and the first flow path 5 can jointly dissipate heat for the battery 21 of the battery flow path 2 and the electric drive and control component 101, thereby improving the heat dissipation efficiency. This is mode 7.

[0049] Or refer to Figure 9As shown, the electric drive and electronic control flow path 1 and the heat exchange flow path 3 are connected in series, and the heat exchange flow path 3 is connected in series with the battery flow path 2. The battery flow path 2 is connected in series with the first flow path 5, and the battery flow path 2 is connected in series with the second flow path 6. At the same time, the outlet of the first flow path 5 and the outlet of the second flow path 6 are also connected to the inlet of the electric drive and electronic control flow path 1. At this time, the coolant is divided in the first flow path 5 and the second flow path 6 in proportion. Similarly, the medium-temperature radiator 51 of the first flow path 5 can simultaneously dissipate heat for the battery 21 of the battery flow path 2 and the electric drive and electronic control component 101. However, since the coolant is divided to the second flow path 6, the heat dissipation effect of the medium-temperature radiator 51 on the electric drive and electronic control component 101 and the battery 21 is lower than that in mode 7. This is mode 8.

[0050] Therefore, by switching between the different modes, not only can the medium-temperature radiator 51 be used to cool the electric drive and control components 101, but the battery 21 can also be cooled. The heat exchange flow path 3 can be used to cool the electric drive and control flow path 1 and the battery flow path 2. The heat generated by the electric drive and control components 101 can also be used to heat the battery 21, thereby achieving more heat exchange options, higher flexibility, and improved heat exchange efficiency.

[0051] In some embodiments, the seven-way valve 4 includes a first valve port 41, a second valve port 42, a third valve port 43, a fourth valve port 44, a fifth valve port 45, a sixth valve port 46, and a seventh valve port 47. When the first valve port 41 and the second valve port 42 are connected, the second flow path 6 is connected to the electric drive and control flow path 1 so that the electric drive and control flow path 1 cools the electric drive and control assembly 101. Alternatively, when the first valve port 41 and the third valve port 43 are connected, the first flow path 5 is connected to the electric drive and control flow path 1 so that the medium-temperature radiator 51 cools the electric drive and control assembly 101. The seventh valve port 47 is connected to the fourth valve port 44 and the fifth valve port 45 is connected to the sixth valve port 46. The heat exchange flow path 3 is connected in series with the battery flow path 2. After exchanging heat with the refrigerant, the heat exchange flow path 3 cools the battery 21 of the battery flow path 2.

[0052] In practice, combined with Figures 2-4 and Figure 10 As shown, the seven-way valve 4 is suitable for switching between the heat exchange flow path 3 and the battery flow path 2 and the electric drive / electric control flow path 1. Simultaneously, the seven-way valve 4 can also selectively connect at least one of the first flow path 5 and the second flow path 6 in series with the electric drive / electric control flow path 1, or in series with the battery flow path 2. The seven-way valve 4 forms a flow channel for coolant between two connected valve ports. For example, if the first valve port 41 and the second valve port 42 are connected, a flow channel is formed between the first valve port 41 and the second valve port 42.

[0053] Reference Figure 2As shown, the first valve port 41 and the second valve port 42 of the seven-way valve 4 are connected. At this time, the second flow path 6 and the electric drive and control flow path 1 can form a circulating flow path. When coolant is introduced into the electric drive and control flow path 1, the coolant can circulate in the electric drive and control flow path 1 and carry away the heat of the electric drive and control component 101. At this time, one end of the heat exchange flow path 3 and the battery flow path 2 are connected through the seventh valve port 47 and the fourth valve port 44, and the other end of the heat exchange flow path 3 and the battery flow path 2 are connected through the sixth valve port 46 and the fifth valve port 45, realizing the series connection between the heat exchange flow path 3 and the battery flow path 2. At this time, after the first heat exchanger 31 exchanges heat with the refrigerant of the air conditioning system and the temperature drops, the heat exchange flow path 3 can cool the battery 21 of the battery flow path 2.

[0054] Additionally, refer to Figure 3 As shown, at this time, the first valve port 41 and the third valve port 43 of the seven-way valve 4 are connected, so that the first flow path 5 is connected in series with the electric drive and electric control flow path 1. Then the medium temperature heat sink 51 of the first flow path 5 can cool the electric drive and electric control component 101 of the electric drive and electric control flow path 1, thereby improving the working life of the electric drive and electric control component 101. The heat exchange flow path 3 can still cool the battery 21 of the battery flow path 2.

[0055] Alternatively, when the first valve port 41 and the second valve port 42 are connected, the second flow path 6 is connected to the electric drive and control flow path 1, so that the electric drive and control flow path 1 cools the electric drive and control assembly 101. When the first valve port 41 and the third valve port 43 are connected, the first flow path 5 is connected to the electric drive and control flow path 1, so that the intermediate-temperature radiator 51 cools the electric drive and control assembly 101. At this time, some coolant can flow to the second flow path 6, and some coolant can flow to the first flow path 5, thereby achieving that when the intermediate-temperature radiator 51 cools the electric drive and control assembly 101, the final temperature of the electric drive and control assembly 101 is higher than... Figure 3 This mode, which has a lower heat dissipation effect than the mode where the coolant only flows to the first flow path 5, can be selected according to different heat dissipation temperature requirements of the electric drive and control components 101. Figure 3 pattern or Figure 4 In this mode, battery 21 in battery flow path 2 is still cooled through heat exchange flow path 3.

[0056] Therefore, by setting a seven-way valve 4, the integration is higher, and the battery flow path 2, electric drive and control flow path 1, heat exchange flow path 3, first flow path 5 and second flow path 6 can be selectively connected according to actual needs, thus increasing the heat exchange methods.

[0057] In some embodiments, such as Figure 5As shown, when the first valve port 41 and the seventh valve port 47 are connected; when the sixth valve port 46 and the second valve port 42 are connected, and the fourth valve port 44 and the fifth valve port 45 are connected, the refrigerant after heat exchange in the heat exchange flow path 3 dissipates heat from the electric drive and control components 101 in the electric drive and control flow path 1, and the battery flow path 2 cools the battery 21; that is, at this time, the heat exchange flow path 3 and the electric drive and control flow path 1 are connected, and after the first heat exchanger 31 in the heat exchange flow path 3 exchanges heat with the refrigerant of the air conditioning system, the coolant flows to the sixth valve port 46 of the seven-way valve 4, and from the sixth valve port 46 to the second valve port 42, and through the second valve port 42 to the inlet of the second flow path 6, and the outlet of the second flow path 6 flows to the inlet of the electric drive and control flow path 1. At this time, the refrigerant can reduce the temperature of the heat exchange flow path 3, thereby realizing the cooling and heat dissipation of the electric drive and control components 101 in the electric drive and control flow path 1 by the heat exchange flow path 3. In battery flow path 2, the coolant flows through battery 21 to the fourth valve port 44, and then through the fourth valve port 44 to the fifth valve port 45. The coolant then flows back to battery 21 from the fifth valve port 45, thus achieving a cooling cycle of the coolant to battery 21.

[0058] Or such as Figure 6 As shown, when the sixth valve port 46 and the third valve port 43 are connected and the fourth valve port 44 and the fifth valve port 45 are connected, the heat exchange flow path 3 and the refrigerant exchange heat and the medium temperature radiator 51 can jointly cool the electric drive and control components 101 of the electric drive and control flow path 1, and the battery flow path 2 cools the battery 21. Heat exchange flow path 3 is connected in series with electric drive and control flow path 1 and first flow path 5. After the refrigerant exchanges heat at the first heat exchanger 31, the temperature of the coolant in heat exchange flow path 3 is reduced. The cooled coolant flows to the sixth valve port 46 and then to the third valve port 43. It then flows to the medium-temperature radiator 51 of the first flow path 5 and then to the inlet of electric drive and control flow path 1. This combination of medium-temperature radiator 51 and heat exchange flow path 3 effectively dissipates heat from the electric drive and control component 101, thereby improving the heat dissipation efficiency of the electric drive and control component 101. Battery flow path 2 still cools the battery 21 through self-circulating coolant.

[0059] Therefore, the seven-way valve 4 allows for different modes of heat dissipation and cooling of the electric drive and control components 101, with varying heat dissipation efficiencies. The appropriate heat dissipation method can be switched according to actual needs, offering multiple options and high flexibility. For example, if one heat dissipation method cannot meet the heat dissipation requirements of the electric drive and control components 101, another method can be combined, thus improving heat dissipation efficiency. And when… Figure 5 If the mode in the middle can meet the heat dissipation requirements, then a medium-temperature heat sink 51 that is not connected to the first flow path 5 can be used for heat dissipation.

[0060] In some embodiments, refer to Figure 7As shown, when the first valve port 41 and the seventh valve port 47 are connected, the second valve port 42 and the fourth valve port 44 are connected, and the fifth valve port 45 and the sixth valve port 46 are connected, the electric drive and control flow path 1 and the battery flow path 2 are connected, and the heat of the electric drive and control flow path 1 is suitable for application to the battery flow path 2 to heat the battery 21.

[0061] In this sixth mode, the first heat exchanger 31 does not exchange heat with the refrigerant. The first heat exchanger 31 only serves as a pipeline for flow. The coolant can flow from the sixth valve port 46 of the seven-way valve 4 to the fifth valve port 45, and then through the fifth valve port 45 to the battery flow path 2 to cool the battery 21. The coolant flowing out of the battery flow path 2 flows to the fourth valve port 44 of the seven-way valve 4, and then through the fourth valve port 44 to the second valve port 42, and then through the second valve port 42 to the second flow path 6. The outlet of the second flow path 6 flows to the inlet of the electric drive and control flow path 1. In this mode, when the first heat exchanger 31 does not exchange heat with the air conditioning system, the first heat exchanger 31 only serves as a pipeline for flow, thereby enabling the heat generated when the electric drive and control components 101 are working to be applied to the battery flow path 2, achieving reasonable utilization of heat.

[0062] Or refer to Figure 8 As shown, when the first valve port 41 and the seventh valve port 47 are connected, the third valve port 43 and the fourth valve port 44 are connected, and the fifth valve port 45 and the sixth valve port 46 are connected, the refrigerant of the medium-temperature radiator 51 and the air conditioning system jointly cools the battery 21 and the electric drive and control components 101. At this time, the refrigerant of the first heat exchanger 31 can exchange heat with the refrigerant of the air conditioning system, thereby cooling the heat exchange flow path 3. The cooled coolant flows to the sixth valve port 46 of the seven-way valve 4, and then flows to the fifth valve port through the sixth valve port 46. 45, and then flows through the fifth valve port 45 to one end of the battery flow path 2, and through the other end of the battery flow path 2 to the fourth valve port 44. The fourth valve port 44 and the third valve port 43 are connected, and the coolant can flow from the fourth valve port 44 to the third valve port 43, and from the third valve port 43 to the first flow path 5, and through the first flow path 5 to the inlet of the electric drive and electronic control flow path 1, so that the medium temperature radiator 51 and the heat exchange flow path 3 can jointly cool the battery 21 and the electric drive and electronic control components 101.

[0063] Or, refer to Figure 9 As shown, when the first valve port 41 and the seventh valve port 47 are connected, and the second valve port 42 and the third valve port 43 are both connected to the fourth valve port 44, and the fifth valve port 45 and the sixth valve port 46 are connected, the coolant is diverted to the second flow path 6 and the first flow path 5 where the medium-temperature radiator 51 is located. The medium-temperature radiator 51 and the refrigerant of the air conditioning system jointly cool the battery 21 and the electric drive and control components 101.

[0064] This method and the above Figure 8The difference in this method lies in that, after the coolant in battery flow path 2 flows to the fourth valve port 44, it flows through the fourth valve port 44 to the third valve port 43, and then through the third valve port 43 to the first flow path 5. Simultaneously, it flows through the fourth valve port 44 to the second valve port 42, and then through the second valve port 42 to the second flow path 6. This achieves a proportional flow of coolant to the first flow path 5 and the second flow path 6. In other words, at this time, both the medium-temperature radiator 51 and the heat exchange flow path 3 can dissipate heat for the battery 21 in battery flow path 2 and the electric drive and control components 101 in electric drive and control flow path 1. However, this method is compared to... Figure 8 In this manner, a portion of the coolant flows to the second flow path 6, thus the cooling effect of the medium-temperature radiator 51 on the coolant is lower than that of the second flow path 6. Figure 8 The method, that is, the heat dissipation effect of the electric drive and control components 101 and the battery 21 is lower than that of the electric drive and control components 101 and the battery 21. Figure 8 The method involves both the medium-temperature radiator 51 and the coolant in the heat exchange flow path 3 to cool the battery 21 and the electric drive and control components 101. Compared with the method of cooling the battery 21 and the electric drive and control components 101 by either the medium-temperature radiator 51 or the coolant in the heat exchange flow path 3, the heat dissipation efficiency is improved.

[0065] Of course, it should be noted that in this embodiment of the invention, a second heat exchanger 24 can also be provided in the battery flow path 2. The second heat exchanger 24 is a water-to-water heat exchanger, which means that the battery flow path 2 and the engine coolant can be selectively exchanged through the second heat exchanger 24. When the engine coolant temperature rises, it can exchange heat with the battery flow path 2 to heat the battery 21 in the battery flow path 2. When there is no heat exchange between the engine coolant flow path and the second heat exchanger 24, and the coolant in the battery flow path 2 flows to the second heat exchanger 24, then the second heat exchanger 24 only serves as a pipeline for flow.

[0066] In some embodiments, the thermal management system 100 further includes a control valve 7, an electric drive and control flow path 1 is provided with a first water pump 8, and the control valve 7 includes a first inlet 71, a first outlet 72 and a second inlet 73; the outlet of the first water pump 8 is connected to the inlet of the electric drive and control assembly 101, one end of the first flow path 5 is connected to the third valve port 43 of the seven-way valve 4 and the other end is connected to the first inlet 71 of the control valve 7, the first outlet 72 is connected to the first inlet 71 and the inlet of the first water pump 8, and one end of the second flow path 6 is connected to the second valve port 42 of the seven-way valve 4 and the other end is connected to the second inlet 73.

[0067] In practice, by setting a control valve 7, which includes a first inlet 71, a first outlet 72, and a second inlet 73, the electric drive and control flow path 1 can be easily connected to the first flow path 5, that is, connected to the medium-temperature radiator 51. It also facilitates the connection and switching between the electric drive and control flow path 1 and the second flow path 6.

[0068] Specifically, when the medium-temperature radiator 51 simultaneously cools the electric drive and control components 101 of the electric drive and control flow path 1 and the coolant of the battery flow path 2, the third valve port 43 of the seven-way valve 4 is connected to the inlet of the medium-temperature radiator 51, and the outlet of the medium-temperature radiator 51 is connected to the first inlet 71 of the control valve 7. The coolant flows to the first water pump 8 through the first outlet 72 of the control valve 7, thereby continuing to circulate in the flow path where the electric drive and control components 101 are located, achieving continuous heat dissipation of the coolant and realizing heat dissipation circulation.

[0069] In some embodiments, the electric drive and control flow path 1 includes a first branch 11 and a second branch 12 distributed in parallel. The first branch 11 is provided with at least one of an energy distribution module 111, a water-cooled intercooler 112, and a transmission oil cooler 113. The second branch 12 is provided with at least one of an audio-visual entertainment host 121, an intelligent driving domain controller 124, a DC charger 125, and a rear-drive module 126.

[0070] In other words, the aforementioned electric drive and control component 101 may include an energy distribution module 111, a water-cooled intercooler 112, a transmission oil cooler 113, an audio-visual entertainment host 121, an intelligent driving domain controller 124, a DC charger 125, and a rear-drive module 126. Firstly, different electrical components are installed in the first branch 11 and the second branch 12. For example, one or two of the energy distribution module 111, water-cooled intercooler 112, and transmission oil cooler 113 may be installed in the first branch 11, or all of them may be connected in series in the first branch 11. Similarly, one, two, or three of the audio-visual entertainment host 121, intelligent driving domain controller 124, DC charger 125, and rear-drive module 126 may be connected in series in the second branch 12, or all of them may be connected in series in the second branch 12.

[0071] Furthermore, the energy distribution module 111, water-cooled intercooler 112, and transmission oil cooler 113 are all located in the vehicle's engine compartment. It would be more convenient to connect the energy distribution module 111, water-cooled intercooler 112, and transmission oil cooler 113 in series in the first branch 11. Other components, such as the audio-visual entertainment host 121, intelligent driving domain controller 124, DC charger 125, and rear-wheel drive module 126, are not located in the engine compartment. For example, the audio-visual entertainment host 121 and intelligent driving domain controller 124 are located in the control panel area in the front center of the driver's cab, the vehicle's DC charger 125 is located at the rear of the vehicle (e.g., the DC charging interface is installed on the left rear side of the vehicle), and the vehicle's rear-wheel drive module 126 may be located in the vehicle's chassis. This allows the electrical components in the engine compartment to be connected to the first branch 11, while other electrical components are located in the second branch 12. The arrangement of the first branch 11 and the second branch 12 facilitates the piping layout of the thermal management system 100 and the reasonable series connection of multiple electrical components.

[0072] In practice, the coolant flow regulation of the energy distribution module 111, water-cooled intercooler 112, and transmission oil cooler 113 in the first branch 11 differs from that of the audio-visual entertainment host 121, intelligent driving domain controller 124, DC charger 125, and rear-drive module 126 in the second branch 12. For example, by controlling and adjusting the coolant flow rate of the first branch 11 to be greater than that of the second branch 12 through a control structure, the different electrical components in the first branch 11 and the second branch 12 can be kept in harmony. The system meets the appropriate flow requirements and facilitates the thermal management system 100 in connecting electrical components located in different positions in series. After the coolant passes through the first water pump 8, it can simultaneously flow to the first branch 11 and the second branch 12. When the medium-temperature radiator 51 dissipates heat from the electric drive and control components 101, it can simultaneously dissipate heat from the electrical components in the first branch 11 and the second branch 12, thereby improving the heat dissipation efficiency for multiple electrical components. Moreover, the design of the first branch 11 and the second branch 12, after connecting multiple electrical components in series, can also improve the orderliness and compactness of the pipeline layout of the thermal management system 100.

[0073] In some embodiments, the second branch 12 includes a first three-way pipe 122, a throttling pipe 127, and a second three-way pipe 123. One inlet of the first three-way pipe 122 is connected to the outlet of the audio-visual entertainment host 121, and one outlet is connected to the inlet of the throttling pipe 127. The outlet of the throttling pipe 127 is connected to one inlet of the second three-way pipe 123. One outlet of the second three-way pipe 123 is connected to the inlet of the DC charger 125. The other outlet of the first three-way pipe 122 and the other inlet of the second three-way pipe 123 are connected to the intelligent driving domain controller 124.

[0074] By installing a throttle pipe 127 in the second branch 12 and connecting the intelligent driving domain controller 124 between the first three-way pipe 122 and the second three-way pipe 123, the flow resistance of the coolant in the second branch 12 can be increased, thereby preventing the flow rate of the second branch 12 from being too large. In other words, the coolant flow rate of the electrical components in the second branch 12 is adjusted to be within a suitable range. At the same time, the coolant flow rate of the second branch 12 is less than the coolant flow rate of the first branch 11, so that the coolant flow rate is kept within the required flow rate range for each branch and the flow rates of the first branch 11 and the second branch 12 are balanced, so that the coolant flows stably.

[0075] In some embodiments, the battery flow path 2 further includes a liquid-gas separator 23, one inlet of which is connected to the expansion tank 9, and the coolant flows through one outlet of the liquid-gas separator 23 to the coolant inlet of the battery 21, and through the coolant outlet of the battery 21 to the other inlet of the liquid-gas separator 23.

[0076] In practice, one outlet of the liquid-gas separator 23 is connected to the second water pump 22, which is connected to the coolant inlet of the battery 21. By setting up the liquid-gas separator 23, the coolant and gas in the battery flow path 2 can be separated. The liquid-gas separator 23 is connected to the expansion tank 9, thereby replenishing water to the battery flow path 2. Separating the gas can improve the stability of the coolant flow in the battery flow path 2, reduce the flow resistance, and improve the coolant circulation efficiency, thereby improving the efficiency of cooling or heating the battery 21.

[0077] Additionally, it should be noted that the aforementioned control valve 7 is a four-way valve. In addition to the first inlet 71, the first outlet 72, and the second inlet 73, it also includes a third inlet 74. The third inlet 74 is connected to the expansion tank 9. The expansion tank 9 replenishes coolant to the electric drive and electric control flow path 1 through the four-way valve and can also regulate the pressure of the thermal management system 100. Thus, the control valve 7 enables selective connection of pipelines with different functions to the electric drive and electric control flow path 1.

[0078] In some embodiments, the medium-temperature radiator 51 is located at the front grille of the vehicle.

[0079] In practice, the medium-temperature radiator 51 is located at the front grille of the vehicle. When the vehicle is in motion, the air intake of the front grille is large, which makes the cold air intake area of ​​the medium-temperature radiator 51 larger, resulting in better heat dissipation and higher efficiency.

[0080] This utility model embodiment also proposes a vehicle including the aforementioned thermal management system 100. A seven-way valve 4 is used in the electric drive and electronic control flow path 1. After the intermediate-temperature radiator 51 cools the electric drive and electronic control components 101, the seven-way valve 4 switches to a specific mode to cool the battery 21. At this time, because the intermediate-temperature radiator 51 cools the electric drive and electronic control flow path 1, the water temperature of the electric drive and electronic control flow path 1 is lower than the water temperature of the battery flow path 2. Therefore, the cooling water of the electric drive and electronic control flow path 1 flows to the battery flow path 2 to cool the battery 21. This utility model embodiment can... This addresses the issue of cooling the battery 21 by activating the high-energy-consuming components of the compressor. Additionally, at low temperatures, the heat generated by the electric drive and control flow path 1 can heat the coolant flowing through the battery 21. This can be achieved by switching the flow path 1 to heat the battery 21 via the seven-way valve 4, thereby improving the battery 21's operating efficiency. In other words, this allows the vehicle's battery 21 and electric drive and control components 101 to maintain a suitable temperature under different temperature conditions, improving the battery 21's operating efficiency and lifespan, as well as extending the lifespan of the electric drive and control components 101.

[0081] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0082] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A thermal management system, characterized in that, include: The system includes a battery flow path, an electric drive and control flow path, a first flow path, a second flow path, and a heat exchange flow path. The battery flow path is used for heat exchange with the battery, and the electric drive and control flow path is used for heat exchange with the electric drive and control components. The first flow path is equipped with a medium-temperature radiator, and the heat exchange flow path includes a first heat exchanger. The first heat exchanger is selectively adapted to exchange heat between the heat exchange flow path and the refrigerant flow path of the air conditioning system. A seven-way valve is used to selectively connect at least one of the battery flow path and the electric drive / electric control flow path in series with the heat exchange flow path, and is also used to connect at least one of the battery flow path and the electric drive / electric control flow path in series with the first flow path and / or in series with the second flow path.

2. The thermal management system according to claim 1, characterized in that, The seven-way valve includes a first valve port, a second valve port, a third valve port, a fourth valve port, a fifth valve port, a sixth valve port, and a seventh valve port; When the first valve port and the second valve port are connected, the second flow path is connected to the electric drive and control flow path so that the electric drive and control flow path cools the electric drive and control components; and / or, when the first valve port and the third valve port are connected, the first flow path is connected to the electric drive and control flow path so that the medium-temperature radiator cools the electric drive and control components. The seventh valve port is connected to the fourth valve port and the fifth valve port is connected to the sixth valve port. The heat exchange flow path is connected in series with the battery flow path. After exchanging heat with the refrigerant, the heat exchange flow path cools the battery in the battery flow path.

3. The thermal management system according to claim 2, characterized in that, The first valve port and the seventh valve port are connected; When the sixth valve port and the second valve port are connected and the fourth valve port and the fifth valve port are connected, the refrigerant after heat exchange in the heat exchange flow path dissipates heat from the electric drive and electric control components in the electric drive and electric control flow path, and the battery flow path cools the battery. Alternatively, when the sixth valve port and the third valve port are connected, and the fourth valve port and the fifth valve port are connected, the refrigerant after heat exchange in the heat exchange flow path and the medium-temperature radiator can jointly cool the electric drive and electric control components in the electric drive and electric control flow path, and the battery flow path cools the battery.

4. The thermal management system according to claim 2, characterized in that, When the first valve port and the seventh valve port are connected, the second valve port and the fourth valve port are connected, and the fifth valve port and the sixth valve port are connected, the electric drive and control flow path and the battery flow path are connected, and the heat of the electric drive and control flow path is suitable for application to the battery flow path to heat the battery; Alternatively, when the first valve port and the seventh valve port are connected, the third valve port and the fourth valve port are connected, and the fifth valve port and the sixth valve port are connected, the refrigerant of the medium-temperature radiator and the air conditioning system together cool the battery and the electric drive and control components. Alternatively, when the first valve port and the seventh valve port are connected, the second valve port and the third valve port are both connected to the fourth valve port, and the fifth valve port and the sixth valve port are connected, the coolant is diverted to the second flow path and the first flow path where the medium-temperature radiator is located. The medium-temperature radiator and the refrigerant of the air conditioning system jointly cool the battery and the electric drive and control components.

5. The thermal management system according to claim 2, characterized in that, It also includes a control valve, the electrically driven and electrically controlled flow path is equipped with a first water pump, and the control valve includes a first inlet, a first outlet and a second inlet; The outlet of the first water pump is connected to the inlet of the electric drive and control assembly. One end of the first flow path is connected to the third valve port of the seven-way valve and the other end is connected to the first inlet of the control valve. The first outlet is connected to the first inlet and the inlet of the first water pump. One end of the second flow path is connected to the second valve port of the seven-way valve and the other end is connected to the second inlet.

6. The thermal management system according to claim 1, characterized in that, The electric drive and control circuit includes a first branch and a second branch connected in parallel. The first branch is equipped with at least one of an energy distribution module, a water-cooled intercooler, and a transmission oil cooler. The second branch is equipped with at least one of an audio-visual entertainment host, an intelligent driving domain controller, a DC charger, and a rear-drive module.

7. The thermal management system according to claim 6, characterized in that, The second branch includes a first three-way pipe, a throttling pipe, and a second three-way pipe. One inlet of the first three-way pipe is connected to the outlet of the audio-visual entertainment host, and one outlet is connected to the inlet of the throttling pipe. The outlet of the throttling pipe is connected to one inlet of the second three-way pipe, and one outlet of the second three-way pipe is connected to the inlet of the DC charger. The other outlet of the first three-way pipe and the other inlet of the second three-way pipe are connected to the intelligent driving domain controller.

8. The thermal management system according to claim 1, characterized in that, The battery flow path also includes a liquid-gas separator. One inlet of the liquid-gas separator is connected to an expansion tank. Coolant flows through one outlet of the liquid-gas separator to the coolant inlet of the battery, and through the coolant outlet of the battery to the other inlet of the liquid-gas separator.

9. The thermal management system according to claim 1, characterized in that, The medium-temperature radiator is located at the front grille of the vehicle.

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

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