Thermal Management System for Range-Extended Electric Vehicles

Abstract

This disclosure provides a thermal management system for a range-extended electric vehicle, belonging to the field of new energy vehicle technology. The thermal management system includes a total expansion tank, a water-heat exchanger, a battery cooler, a first electronic water pump, a second electronic water pump, and a four-way valve. The water-heat exchanger, the battery cooler, the first electronic water pump, the second electronic water pump, and the four-way valve are all connected to the outer shell of the total expansion tank. The total expansion tank has independent first and second expansion chambers inside, and the outer shell of the total expansion tank has heat exchange channels, which include multiple independent sub-channels. This disclosure effectively integrates the components required to achieve thermal management functions and significantly improves the problem of limited space in the front compartment.

Description

Technical Field

[0001] This disclosure pertains to the field of new energy vehicle technology, and specifically relates to a thermal management system for range-extended electric vehicles. Background Technology

[0002] In recent years, with the rapid development of new energy vehicles, range-extended electric vehicles (REEVs) have gradually gained popularity. Based on the technical principles of REEVs, the front compartment of a REEV needs to house the engine and generator, which places higher technical demands on the vehicle's thermal management system and the layout of the front compartment.

[0003] In related technologies, the thermal management system of range-extended electric vehicles includes components such as a high-temperature radiator, a low-temperature radiator, a condenser, a fan, a high-temperature expansion tank, a low-temperature expansion tank, a battery cooler, and a water-heat exchanger. To facilitate the arrangement of these components, they are generally distributed in the front compartment. Furthermore, during the arrangement process, lines are pre-marked in the front compartment to determine the installation boundaries of each component. Then, during actual installation, each component is placed in its corresponding spatial location according to these marked boundaries.

[0004] However, while distributing the components of the thermal management system within the forward compartment facilitates assembly, the interconnectedness of these components creates a cooling loop. This results in excessive piping connections, leading to insufficient space for component placement within the engine forward compartment. Summary of the Invention

[0005] This disclosure provides a thermal management system for a range-extended electric vehicle, which can integrate some components of the thermal management system, reducing the number of parts and significantly improving the problem of limited space in the front compartment. The technical solution is as follows:

[0006] This disclosure provides a thermal management system for a range-extended electric vehicle. The thermal management system includes a total expansion tank, a water-heat exchanger, a battery cooler, a first electronic water pump, a second electronic water pump, and a four-way valve. The water-heat exchanger, the battery cooler, the first electronic water pump, the second electronic water pump, and the four-way valve are all connected to the outer shell of the total expansion tank. The total expansion tank has two independent expansion chambers, a first expansion chamber and a second expansion chamber, each containing coolant. The temperature of the coolant in the first expansion chamber is higher than that in the second expansion chamber. The outer shell of the total expansion tank has a heat exchange channel, which includes multiple independent sub-channels. These sub-channels connect one of the components to either the engine or the battery pack in the vehicle, or connect two of the components. The components include the first expansion chamber, the second expansion chamber, the water-heat exchanger, the battery cooler, the first electronic water pump, the second electronic water pump, and the four-way valve.

[0007] In another implementation of this disclosure, the total expansion tank includes a housing and a connector; the housing is located on one side of the connector and connected to the connector, the first expansion cavity and the second expansion cavity are respectively located inside the housing; the heat exchange channel is located inside the connector, and the water heat exchanger, the battery cooler, the first electronic water pump, the second electronic water pump and the four-way valve are respectively connected to the connector.

[0008] In another implementation of this disclosure, the connector is a long strip plate, the connector is located in the middle of one side of the housing, and the length direction of the connector is perpendicular to the side of the housing connected to the connector.

[0009] In another implementation of this disclosure, the connector has a first plate and a second plate arranged opposite to each other, the first plate and the second plate being parallel to each other, and the first plate being parallel to the length direction of the connector; the water heat exchanger, the second electronic water pump, and the battery cooler are sequentially connected to the first plate along the length direction of the connector, and the second electronic water pump and the battery cooler are both located between the housing and the water heat exchanger; the first electronic water pump and the four-way valve are sequentially connected to the second plate along the length direction of the connector, and the first electronic water pump is located between the housing and the four-way valve.

[0010] In another implementation of this disclosure, one of the plurality of sub-channels is a first sub-channel, which is located between the water heat exchanger and the battery cooler, and is connected to the outlet of the battery cooler and the first port of the water heat exchanger, respectively.

[0011] In another implementation of this disclosure, one of the plurality of sub-channels is a second sub-channel, which is spaced apart from the first sub-channel and is located between the housing and the second electronic water pump; the second sub-channel is connected to the second electronic water pump and the second expansion chamber respectively.

[0012] In another implementation of this disclosure, one of the plurality of sub-channels is a third sub-channel, which is spaced apart from the second sub-channel and the first sub-channel. The third sub-channel is located between the water heat exchanger and the four-way valve, and is connected to the second port of the water heat exchanger and the first interface of the four-way valve.

[0013] In another implementation of this disclosure, the total expansion tank further includes a plurality of first fasteners, which are spaced apart outside the tank and connected to the outer wall of the tank. The first fasteners are used to connect to the front compartment of the vehicle.

[0014] In another implementation of this disclosure, the first fastener includes a first connecting plate and a second connecting plate. The first connecting plate is connected to the outer wall of the housing and is parallel to the surface of the outer wall of the housing to which it is connected. The second connecting plate is vertically connected to one side of the first connecting plate and has a connecting hole that passes through the two opposite surfaces of the second connecting plate.

[0015] In another implementation of this disclosure, the total expansion tank further includes a second fastener connected to the connector. The second fastener is used to connect to the front compartment of the vehicle. The second fastener has the same structure as the first fastener, and the axis of the connecting hole in the second fastener is perpendicular to the axis of the connecting hole in the first fastener.

[0016] The beneficial effects of the technical solutions provided in this disclosure are:

[0017] When the thermal management system for new energy vehicles provided in this embodiment is used in a car, since the thermal management system includes a total expansion tank, and the water heat exchanger, battery cooler, first electronic water pump, second electronic water pump and four-way valve are all connected to the outer shell of the total expansion tank, the total expansion tank can provide an installation base for components such as the water heat exchanger, battery cooler, first electronic water pump, second electronic water pump and four-way valve, so that the above components can be integrated together for easy installation and to save space.

[0018] Furthermore, since the total expansion chamber has independent first expansion chambers and second expansion chambers, and the outer shell of the total expansion chamber has heat exchange channels with multiple independent sub-channels, the connection between different components in the thermal management system can be achieved through the sub-channels in the outer shell of the total expansion chamber, thereby reducing the arrangement of pipe fittings and further saving space.

[0019] In other words, the thermal management system in this embodiment can effectively reduce the space occupied by thermal components in the front compartment of the vehicle, thereby improving the problem of insufficient space in the front compartment thermal management system. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of a thermal management system provided in an embodiment of this disclosure;

[0022] Figure 2 yes Figure 1 The left side of the image;

[0023] Figure 3 yes Figure 1 The image on the right;

[0024] Figure 4 yes Figure 1 A schematic diagram of the sub-channels in the diagram.

[0025] The symbols in the diagram represent the following meanings:

[0026] 1. Main expansion chamber; 1001. First expansion chamber; 1002. Second expansion chamber; 11. Chamber body; 12. Connecting piece; 13. First fixing piece; 131. First connecting plate; 132. Second connecting plate; 1310. Strip hole; 1320. Connecting hole; 15. Second fixing piece;

[0027] 10. Heat exchange flow channel; 101. First sub-flow channel; 102. Second sub-flow channel; 103. Third sub-flow channel; 104. Fourth sub-flow channel; 105. Fifth sub-flow channel; 106. Sixth sub-flow channel;

[0028] 1101, First degassing port; 1102, Second degassing port; 110, Low-temperature water outlet; 111, First outlet; 112, Second outlet; 123, Third outlet; 124, Fourth outlet; 125, Fifth outlet; 126, Sixth outlet; 127, Seventh outlet;

[0029] 2. Water heat exchanger; 3. Battery cooler;

[0030] 4. First electronic water pump; 5. Second electronic water pump; 6. Four-way valve. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be described in further detail below with reference to the accompanying drawings.

[0032] This disclosure provides a thermal management system for a range-extended electric vehicle, such as... Figure 1 As shown, the thermal management system includes a total expansion tank 1, a water heat exchanger 2, a battery cooler 3, a first electronic water pump 4, a second electronic water pump 5, and a four-way valve 6.

[0033] The water heat exchanger 2, battery cooler 3, first electronic water pump 4, second electronic water pump 5, and four-way valve 6 are all connected to the outer shell of the main expansion tank 1.

[0034] The total expansion chamber 1 has an independent first expansion chamber 1001 and a second expansion chamber 1002. The first expansion chamber 1001 and the second expansion chamber 1002 are respectively filled with coolant. The temperature of the coolant in the first expansion chamber 1001 is higher than the temperature of the coolant in the second expansion chamber 1002.

[0035] The outer shell of the total expansion tank 1 has a heat exchange channel 10 (see...) Figure 4 The heat exchange channel 10 includes multiple independent sub-channels, which are used to connect one of the components to the engine and battery pack in the vehicle, or to connect two of the components.

[0036] The components include a first expansion chamber 1001, a second expansion chamber 1002, a water heat exchanger 2, a battery cooler 3, a first electronic water pump 4, a second electronic water pump 5, and a four-way valve 6.

[0037] When the thermal management system for new energy vehicles provided in this embodiment is used in a car, since the thermal management system includes a total expansion tank 1, and the water heat exchanger 2, battery cooler 3, first electronic water pump 4, second electronic water pump 5 and four-way valve 6 are all connected to the outer shell of the total expansion tank 1, the total expansion tank 1 can provide an installation base for components such as the water heat exchanger 2, battery cooler 3, first electronic water pump 4, second electronic water pump 5 and four-way valve 6, so that the above components can be integrated together for easy installation and to save space.

[0038] Furthermore, since the total expansion tank 1 has an independent first expansion chamber 1001 and a second expansion chamber 1002 inside, and the outer shell of the total expansion tank 1 has a heat exchange channel 10 and more than 10 independent sub-channels, the connection between different components in the thermal management system can be realized through the sub-channels set in the outer shell of the total expansion tank 1, thereby reducing the arrangement of pipe fittings and further saving space.

[0039] In other words, the thermal management system in this embodiment can effectively reduce the space occupied by thermal components in the front compartment of the vehicle, thereby improving the problem of insufficient space in the front compartment thermal management system.

[0040] The outer shell of the total expansion tank 1 mentioned above refers to a hollow shell. That is, the side walls of the outer shell of the total expansion tank 1 are hollow structures. The heat exchange channel 10 within the outer shell of the total expansion tank 1 means that the heat exchange channel 10 is located anywhere within the outer shell that defines the first expansion chamber 1001 and the second expansion chamber 1002. For example, the heat exchange channel 10 may be located within the hollow shell surrounding the first expansion chamber 1001 and the second expansion chamber 1002, or within the hollow shell on the same side of the first expansion chamber 1001 and the second expansion chamber 1002, etc.

[0041] Furthermore, since range-extended electric vehicles (REEVs) include both an engine and a battery pack, their thermal management system needs to cool both the engine and the battery pack simultaneously. Therefore, the thermal management system also includes components such as a high-temperature radiator, a low-temperature radiator, a compressor, a condenser, and a fan. The low-temperature radiator, condenser, high-temperature radiator, and compressor are sequentially arranged in the front compartment of the vehicle, located at the front of the compartment and connected to the front crossbeam. The total expansion tank 1 is also located in the front compartment, at the rear of the compartment, and connected to the reinforcing beam of the front fender. The engine is located in the middle of the front compartment.

[0042] Optionally, the total expansion tank 1 includes a housing 11 and a connector 12. The housing 11 is located on one side of the connector 12 and is connected to the connector 12. The first expansion chamber 1001 and the second expansion chamber 1002 are respectively located inside the housing 11. The heat exchange channel 10 is located inside the connector 12, and the water heat exchanger 2, the battery cooler 3, the first electronic water pump 4, the second electronic water pump 5, and the four-way valve 6 are respectively connected to the connector 12.

[0043] In the above implementation, the total expansion tank 1 is configured as a box body 11 and a connecting member 12. This allows for the simple arrangement of two independent first expansion chambers 1001 and second expansion chambers 1002 within a single box body 11. Simultaneously, the connecting member 12 provides the mounting base for the water heat exchanger 2, battery cooler 3, first electronic water pump 4, second electronic water pump 5, and four-way valve 6, and also facilitates the arrangement of the heat exchange channels.

[0044] In other words, by using a connector 12, components such as the water heat exchanger 2, battery cooler 3, first electronic water pump 4, second electronic water pump 5, and four-way valve 6 in the thermal management system can be integrated with the total expansion tank 1 into a single module, thereby reducing the space occupied by the components. At the same time, by setting sub-channels inside the connector 12, certain different components can be connected through the sub-channels, thereby reducing the layout of pipelines and improving the problem of insufficient space for the front cabin thermal management module.

[0045] Of course, the total expansion tank 1 can also be of other structures. For example, the total expansion tank 1 includes two interconnected boxes. One box has a first expansion chamber 1001 and a second expansion chamber 1002 inside. The other box is connected to a water heat exchanger 2, a battery cooler 3, a first electronic water pump 4, a second electronic water pump 5, and a four-way valve 6, etc., and multiple pipelines are installed inside the box.

[0046] The structure of the above-mentioned total expansion box 1 is only required to integrate the above components together and at the same time arrange multiple flow channels inside. This disclosure does not impose any restrictions on this.

[0047] In addition, the total expansion tank 1 integrates both the high-temperature expansion tank and the low-temperature expansion tank. This structure effectively reduces the space occupied by the high-temperature and low-temperature expansion tanks in the forward compartment. Furthermore, integrating the high-temperature and low-temperature expansion tanks together achieves the effect of "one tank, two tanks," reducing the number of cooling water pipes and lowering development costs.

[0048] When high-temperature expansion chambers and low-temperature expansion chambers are integrated together, they can be either spliced ​​together as separate high-temperature expansion chambers and low-temperature expansion chambers, or they can be formed separately in one chamber.

[0049] In this embodiment, to facilitate the discharge of gas from the housing 11, a first vent 1101 and a second vent 1102 are provided at the top of the housing 11, near the first expansion chamber 1001. Both the first vent 1101 and the second vent 1102 are connected to the first expansion chamber 1001. The first vent 1101 is connected to the venting port in the engine, and the second vent 1102 is connected to the water outlet pipe of the heater core.

[0050] Figure 2 yes Figure 1 The left side of the image, Figure 3 yes Figure 1 The right-hand image, combined with Figure 2 and Figure 3 In addition, to facilitate the connection between the housing 11 and the high-temperature radiator and the low-temperature radiator, a first port 111 and a second port 112 are provided on one side wall of the housing 11. One end of the first port 111 extends into and communicates with the first expansion chamber 1001, and the other end is connected to the outlet of the high-temperature radiator. One end of the second port 112 extends into and communicates with the second expansion chamber 1002, and the other end is connected to the outlet of the low-temperature radiator.

[0051] To facilitate the connection between the second expansion chamber 1002 and the water outlet of the battery pack, a low-temperature water outlet 110 is provided on the housing 11 near the second expansion chamber 1002. One end of the low-temperature water outlet 110 extends into the second expansion chamber 1002 and communicates with the second expansion chamber 1002, while the other end is connected to the water outlet of the battery pack.

[0052] Optionally, the connector 12 is a long strip plate, located in the middle of one side of the housing 11, and the length direction of the connector 12 is perpendicular to the side of the housing 11 connected to the connector 12.

[0053] In the above implementation, the connector 12 is set as a long strip plate, so that components such as the water heat exchanger 2, battery cooler 3, first electronic water pump 4, second electronic water pump 5, and four-way valve 6 can be arranged along the length of the connector 12.

[0054] Meanwhile, the connector 12 is vertically connected to the middle of one side of the housing 11, so that the connector 12 is located in the middle of the housing 11, and thus the water heat exchanger 2, battery cooler 3, first electronic water pump 4, second electronic water pump 5 and four-way valve 6 can be located in the space defined between the two sides of the connector 12 and the side of the housing 11.

[0055] Of course, the connector 12 can also have other structures, such as multiple staggered connecting rods with heat exchange channels inside, and components such as the water heat exchanger 2, battery cooler 3, first electronic water pump 4, second electronic water pump 5, and four-way valve 6 connected to the connecting rods. As long as the connector 12 can not only provide an installation base for components such as the water heat exchanger 2, battery cooler 3, first electronic water pump 4, second electronic water pump 5, and four-way valve 6, but also have heat exchange channels inside it, this disclosure does not impose any limitations.

[0056] Optionally, the connector 12 has a first plate surface and a second plate surface arranged opposite to each other, the first plate surface and the second plate surface are parallel to each other, and the first plate surface is parallel to the axis of the length direction of the connector 12.

[0057] The water heat exchanger 2, the second electronic water pump 5, and the battery cooler 3 are sequentially connected to the first plate of the connector 12 along the length of the connector 12, and the second electronic water pump 5 and the battery cooler 3 are both located between the housing 11 and the water heat exchanger 2.

[0058] The first electronic water pump 4 and the four-way valve 6 are sequentially connected to the second plate along the length of the connector 12, and the first electronic water pump 4 is located between the housing 11 and the four-way valve 6.

[0059] In the above implementation, the water heat exchanger 2, the second electronic water pump 5 and the battery cooler 3 are sequentially connected to the first plate of the connector 12 along the length direction of the connector 12, and the second electronic water pump 5 and the battery cooler 3 are both located between the housing 11 and the water heat exchanger 2. This facilitates the interconnection between the water heat exchanger 2, the second electronic water pump 5 and the battery cooler 3, thereby reducing the layout of pipelines.

[0060] Of course, the above arrangement can also be in other ways, such as arranging the water heat exchanger 2, the second electronic water pump 5, and the battery cooler 3 at intervals along the diagonal direction of the connector 12.

[0061] In this embodiment, the first electronic water pump 4 is used in the engine cooling cycle, and the second electronic water pump 5 is used in the battery pack cooling cycle.

[0062] See Figure 4 Optionally, one of the multiple sub-channels is a first sub-channel 101, which is located between the water heat exchanger 2 and the battery cooler 3, and is connected to the outlet of the battery cooler 3 and the first port of the water heat exchanger 2, respectively.

[0063] In the above implementation, the first sub-channel 101 is used to connect the outlet of the battery cooler 3 and the first port of the water heat exchanger 2, so as to reduce the need for additional external pipelines to connect the outlet of the battery cooler 3 and the first port of the water heat exchanger 2.

[0064] Of course, the arrangement of the first sub-channel 101 can also be in other ways, as long as the outlet of the battery cooler 3 and the first port of the water heat exchanger 2 can be connected.

[0065] In this embodiment, the first sub-channel 101 can be a straight line, a curved line, or a combination of straight lines and curves, and this disclosure does not limit it.

[0066] Optionally, one of the multiple sub-channels is a second sub-channel 102, which is spaced apart from the first sub-channel 101 and is located between the housing 11 and the second electric water pump 5. The second sub-channel 102 is connected to both the second electric water pump 5 and the second expansion chamber 1002.

[0067] In the above implementation, the second sub-channel 102 is used to connect the second electronic water pump 5 and the second expansion chamber 1002, so as to reduce the need for additional external pipelines to connect the second electronic water pump 5 and the second expansion chamber 1002.

[0068] Of course, the second sub-channel 102 can be arranged in other ways, as long as the second electronic water pump 5 and the second expansion chamber 1002 can be connected.

[0069] In this embodiment, the second sub-channel 102 can be a straight line, a curved line, or a combination of straight lines and curves, and this disclosure does not limit it.

[0070] Optionally, one of the multiple sub-channels is a third sub-channel 103, which is spaced apart from the second sub-channel 102 and the first sub-channel 101. The third sub-channel 103 is located between the water heat exchanger 2 and the four-way valve 6, and is connected to the second port of the water heat exchanger 2 and the first interface of the four-way valve 6, respectively.

[0071] In the above implementation, the third sub-channel 103 is used to connect the second port of the water heat exchanger 2 to the first interface of the four-way valve 6 so that the water heat exchanger 2 and the four-way valve 6 are connected.

[0072] In this embodiment, the third sub-channel 103 can be a straight line, a curved line, or a combination of straight lines and curves, and this disclosure does not limit it.

[0073] Optionally, one of the multiple sub-channels may be a fourth sub-channel 104, which is located inside the connector 12 and is spaced apart from the third sub-channel 103, the second sub-channel 102 and the first sub-channel 101, respectively. The fourth sub-channel 104 is connected to the second interface of the four-way valve 6 and the second electronic water pump 5, respectively.

[0074] In the above implementation, the fourth sub-channel 104 is used to connect the second interface of the four-way valve 6 and the second electronic water pump 5 so that the four-way valve 6 and the second electronic water pump 5 are connected.

[0075] In this embodiment, the fourth sub-channel 104 can be a straight line, a curved line, or a combination of straight lines and curves, and this disclosure does not limit it.

[0076] Optionally, one of the sub-channels may also be a fifth sub-channel 105, which is located inside the connector 12 and is spaced apart from the first sub-channel 101, the second sub-channel 102, the third sub-channel 103 and the fourth sub-channel 104 respectively. The fifth sub-channel 105 is connected to the third port of the water heat exchanger 2 and the water inlet of the battery pack respectively.

[0077] In the above implementation, the fifth sub-channel 105 is used to connect the third port of the water heat exchanger 2 and the water inlet of the battery pack, so that the water heat exchanger 2 and the battery pack are connected.

[0078] In this embodiment, the fifth sub-channel 105 can be a straight line, a curved line, or a combination of straight lines and curves, and this disclosure does not limit it.

[0079] Optionally, one of the sub-channels may also be a sixth sub-channel 106. The sixth sub-channel 106 is located inside the connector 12 and is spaced apart from the first sub-channel 101, the second sub-channel 102, the third sub-channel 103, the fourth sub-channel 104 and the sixth sub-channel 106 respectively. The sixth sub-channel 106 is connected to the outlet of the engine and the fourth port of the water heat exchanger 2 respectively.

[0080] In the above implementation, the sixth sub-channel 106 is used to connect the engine outlet and the fourth port of the water heat exchanger 2 so that the engine and the water heat exchanger 2 are connected.

[0081] In this embodiment, the sixth sub-channel 106 can be a straight line, a curved line, or a combination of straight lines and curves, and this disclosure does not limit it.

[0082] Of course, the arrangement of the heat exchange channel 10 can be other structures and is not limited to the above connection functions. It can also be flexibly arranged according to actual needs. For example, the heat exchange channel 10 can also include a sub-channel for connecting the second electronic water pump 5 and the battery cooler. That is to say, the connection objects, bending shapes, etc. of the heat exchange channel 10 can be flexibly set according to actual needs, and this disclosure does not impose any restrictions on this.

[0083] In addition, the connector 12 also has a third port 123, a fourth port 124, a fifth port 125, a sixth port 126, and a seventh port 127.

[0084] The third port 123 connects to the engine water inlet. The fourth port 124 is a three-way valve interface, used to connect to the water inlet of the heater core. The fourth port 124 is connected to the sixth sub-channel 106, used to allow some of the water flowing out of the engine water outlet to enter the heater core. The fifth port 125 is the battery coolant pipe interface, and also the port of the fifth sub-channel 105.

[0085] The sixth port 126 is connected to the outlet of the heater core and to the second port of the four-way valve 6. The seventh port 127 is connected to the PTC electric auxiliary heating inlet.

[0086] Additionally, it should be noted that, Figure 4 The dashed lines in the diagram represent external pipelines. These external pipelines are not sub-channels opened in connector 12; they are used to connect two corresponding components together.

[0087] See you again Figure 1-3 Optionally, the total expansion box 1 also includes a plurality of first fasteners 13, which are spaced apart outside the box body 11 and connected to the outer wall of the box body 11. The first fasteners 13 are used to connect to the front compartment of the vehicle.

[0088] In the above implementation, the first fastener 13 is used to connect the total expansion tank 1 to the front compartment of the vehicle to prevent the total expansion tank 1 from shaking in the front compartment of the vehicle.

[0089] Optionally, the first fastener 13 includes a first connecting plate 131 and a second connecting plate 132. The first connecting plate 131 is connected to the outer wall of the housing 11 and is parallel to the outer wall of the housing 11 to which it is connected. The second connecting plate 132 is vertically connected to one side of the first connecting plate 131 and has a connecting hole 1320 that passes through the two opposite surfaces of the second connecting plate 132.

[0090] In the above implementation, the first fastener 13 is configured as described above, and can be connected to the housing 11 by the first connecting plate 131. The second connecting plate 132 is used to insert fasteners such as bolts into the connecting hole 1320 so as to fix the second connecting plate 132 in the front compartment of the car.

[0091] Of course, the first fastener 13 can be a connecting ring, connecting block, or other structural component that protrudes outside the total expansion box 1.

[0092] Optionally, the first connecting plate 131 has a plurality of strip holes 1310 penetrating the two opposite surfaces of the first connecting plate 131, and the plurality of strip holes 1310 are arranged at intervals.

[0093] In the above implementation, the strip hole 1310 can reduce the weight of the first connecting plate 131.

[0094] The total expansion chamber 1 also includes a second fastener 15, which is connected to the connector 12. The second fastener 15 is used for connection to the front compartment of the vehicle, and has the same structure as the first fastener 13. The axis of the connecting hole in the second fastener 15 is perpendicular to the axis of the connecting hole 1320 of at least one of the first fasteners 13.

[0095] In the above implementation, the second fastener 15 is used to further connect the total expansion tank 1 to the front compartment of the vehicle. This allows the total expansion tank 1 to be connected to the front compartment in different directions, thereby further increasing the connection strength between the total expansion tank 1 and the front compartment of the vehicle.

[0096] The thermal management system in the above-disclosed embodiments can integrate the components of the thermal management system together, so that these components do not occupy the front compartment layout space separately, which is more conducive to the routing of water pipe harnesses, effectively reduces pipeline layout, and facilitates the layout of the thermal management system.

[0097] Furthermore, this thermal management system can also change the shape of the connector 12 according to different vehicle models and the size of the front compartment layout space, which is worth developing and promoting.

[0098] The above description is merely an optional embodiment of this disclosure and is not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the protection scope of this disclosure.

Claims

1. A thermal management system for a range-extended electric vehicle, characterized in that, The thermal management system includes a total expansion tank (1), a water heat exchanger (2), a battery cooler (3), a first electronic water pump (4), a second electronic water pump (5), and a four-way valve (6). The water heat exchanger (2), the battery cooler (3), the first electronic water pump (4), the second electronic water pump (5), and the four-way valve (6) are all connected to the outer shell of the total expansion tank (1); The total expansion tank (1) has an independent first expansion chamber (1001) and a second expansion chamber (1002). The first expansion chamber (1001) and the second expansion chamber (1002) are respectively filled with coolant. The temperature of the coolant in the first expansion chamber (1001) is higher than the temperature of the coolant in the second expansion chamber (1002). The total expansion tank (1) has a heat exchange channel (10) in its outer shell. The heat exchange channel (10) includes multiple independent sub-channels for connecting one of the components to one of the engine and battery pack in the vehicle, or connecting two of the components. The components include the first expansion chamber (1001), the second expansion chamber (1002), the water heat exchanger (2), the battery cooler (3), the first electronic water pump (4), the second electronic water pump (5), and the four-way valve (6). The total expansion tank (1) includes a housing (11) and a connector (12). The housing (11) is located on one side of the connector (12) and is connected to the connector (12). The first expansion cavity (1001) and the second expansion cavity (1002) are respectively located inside the housing (11). The heat exchange channel (10) is located inside the connector (12), and the water heat exchanger (2), the battery cooler (3), the first electronic water pump (4), the second electronic water pump (5) and the four-way valve (6) are respectively connected to the connector (12); The connector (12) is a long strip plate. The connector (12) is located in the middle of one side of the box (11), and the length direction of the connector (12) is perpendicular to the side of the box (11) connected to the connector (12).

2. The thermal management system according to claim 1, characterized in that, The connector (12) has a first plate and a second plate arranged opposite to each other, the first plate and the second plate are parallel to each other, and the first plate is parallel to the length direction of the connector (12); The water heat exchanger (2), the second electronic water pump (5) and the battery cooler (3) are sequentially connected to the first plate along the length direction of the connector (12), and the second electronic water pump (5) and the battery cooler (3) are both located between the housing (11) and the water heat exchanger (2). The first electronic water pump (4) and the four-way valve (6) are sequentially connected to the second plate along the length direction of the connector (12), and the first electronic water pump (4) is located between the housing (11) and the four-way valve (6).

3. The thermal management system according to claim 2, characterized in that, One of the plurality of sub-channels is a first sub-channel (101), which is located between the water heat exchanger (2) and the battery cooler (3), and is connected to the outlet of the battery cooler (3) and the first port of the water heat exchanger (2), respectively.

4. The thermal management system according to claim 3, characterized in that, One of the plurality of sub-channels is a second sub-channel (102), which is spaced apart from the first sub-channel (101) and is located between the housing (11) and the second electronic water pump (5); The second sub-channel (102) is connected to the second electronic water pump (5) and the second expansion chamber (1002) respectively.

5. The thermal management system according to claim 4, characterized in that, One of the plurality of sub-channels is the third sub-channel (103), which is spaced apart from the second sub-channel (102) and the first sub-channel (101). The third sub-channel (103) is located between the water heat exchanger (2) and the four-way valve (6). The third sub-channel (103) is connected to the second port of the water heat exchanger (2) and the first interface of the four-way valve (6).

6. The thermal management system according to any one of claims 1-5, characterized in that, The total expansion tank (1) also includes a plurality of first fasteners (13), which are spaced apart outside the tank body (11) and are all connected to the outer wall of the tank body (11). The first fasteners (13) are used to connect to the front compartment of the vehicle.

7. The thermal management system according to claim 6, characterized in that, The first fastener (13) includes a first connecting plate (131) and a second connecting plate (132). The first connecting plate (131) is connected to the outer wall of the box (11), and the first connecting plate (131) is parallel to the plate surface of the outer wall of the box (11) to which it is connected. The second connecting plate (132) is vertically connected to one side of the first connecting plate (131). The second connecting plate (132) has a connecting hole (1320) that passes through the two opposite surfaces of the second connecting plate (132).

8. The thermal management system according to claim 7, characterized in that, The total expansion tank (1) also includes a second fastener (15), which is connected to the connector (12). The second fastener (15) is used to connect to the front compartment of the vehicle. The second fastener (15) has the same structure as the first fastener (13). The axis of the connecting hole in the second fastener (15) is perpendicular to the axis of the connecting hole (1320) of the first fastener (13).

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