Expansion box and vehicle

Abstract

The utility model relates to an expansion box and a vehicle, and the expansion box comprises a housing which defines a cavity; the partition plate is connected with the shell, the cavity is divided into a first cavity, a second cavity and a third cavity by the partition plate, the first cavity is used for being communicated with a battery loop of the vehicle, the second cavity is used for being communicated with an electric drive loop of the vehicle, and the third cavity is used for being communicated with an engine loop of the vehicle. According to the expansion box, the first cavity used for being communicated with the battery loop, the second cavity used for being communicated with the electric drive loop and the third cavity used for being communicated with the engine loop are formed in one shell, the number of the shells is reduced, and therefore the cost of the expansion box is reduced; in addition, one expansion box is communicated with the battery loop, the electric drive loop and the engine loop, the number of needed expansion boxes is reduced, and therefore the space occupied by installation of the expansion boxes is reduced, the overall size of the vehicle can be reduced, more functional modules can be installed in the limited space conveniently, and the performance of the vehicle can be improved conveniently.

Description

Technical Field

[0001] The present application relates to the field of automobile technology, and in particular to an expansion tank and a vehicle. Background Art

[0002] Hybrid electric vehicles include an engine, a power battery, and an electric drive system. To ensure stable operation of the engine, the power battery, and the electric drive system, an engine circuit for regulating the engine temperature, a battery circuit for regulating the battery temperature, and an electric drive circuit for regulating the temperature of the electric drive system are usually provided. The expansion tank, as an important component of the engine circuit, the battery circuit, and the electric drive circuit, is usually used to store the medium in the circuit and to adjust the pressure in the circuit.

[0003] Current hybrid vehicles require three expansion tanks due to the different operating and storage medium temperature requirements of the engine circuit, electric drive circuit, and battery circuit. The three expansion tanks are connected to the engine circuit, electric drive circuit, and battery circuit respectively. However, the large number of expansion tanks causes them to occupy more space in the vehicle and the overall cost of the expansion tanks is high. Utility Model Content

[0004] The present application provides an expansion tank and a vehicle, which can reduce the space of the entire vehicle occupied by the expansion tank and also reduce the cost of the expansion tank.

[0005] In a first aspect, the present application provides an expansion tank, which includes: an outer shell, which encloses a cavity; a partition, which is connected to the outer shell, and the cavity is divided into a first cavity, a second cavity, and a third cavity by the partition, wherein the first cavity is used to communicate with a battery circuit of a vehicle, the second cavity is used to communicate with an electric drive circuit of the vehicle, and the third cavity is used to communicate with an engine circuit of the vehicle.

[0006] In one possible design, the partition includes a first partition and a second partition spaced apart along a first direction. In the first direction, the first cavity and the second cavity are located on the side of the first partition away from the second partition, and the third cavity is located on the side of the second partition away from the first partition; the first partition, the second partition and part of the outer shell form a first insulation cavity.

[0007] In a possible design, a through hole is provided on the outer shell, and along the third direction, the first heat insulation cavity is connected with the outside through the through hole.

[0008] In a possible design, the through hole includes at least one first through hole and at least one second through hole. In the third direction, the first through hole is located on one side of the first insulation cavity, and the second through hole is located on the other side of the first insulation cavity.

[0009] In one possible design, the partition also includes a third partition and a fourth partition arranged at intervals along the second direction. In the second direction, the first cavity is located on the side of the third partition away from the fourth partition, and the second cavity is located on the side of the fourth partition away from the third partition; the gap between the third partition and the fourth partition forms a second insulation cavity.

[0010] In a possible design, a first fluid infusion port is provided on the housing, and the first fluid infusion port is communicated with the first cavity and the second cavity respectively.

[0011] In one possible design, the partition also includes a fifth partition. Along the third direction, the fifth partition is located between the third partition and the first fluid infusion port and between the fourth partition and the first fluid infusion port. The fifth partition is used to block one end of the second insulation cavity close to the first fluid infusion port; in the third direction, the gap between the fifth partition and the first fluid infusion port forms a connecting channel, and the first cavity and the second cavity are connected through the connecting channel.

[0012] In a possible design, a highest position mark is provided on the housing. In the third direction, the vertical distance between the fifth partition and the first fluid infusion port is H1, and the vertical distance between the highest position mark and the first fluid infusion port is H2, where H1≤H2.

[0013] In a possible design, an opening is provided on the housing, and in the third direction, a side of the second heat-insulating cavity facing away from the first fluid infusion port is connected to the outside through the opening.

[0014] According to a second aspect of the present application, a vehicle is provided, comprising: a vehicle frame; a battery circuit, the battery circuit being mounted on the vehicle frame, the battery circuit being used to heat or cool the vehicle's battery; an electric drive circuit, the electric drive circuit being mounted on the vehicle frame, the electric drive circuit being used to heat or cool the vehicle's electric drive system; an engine circuit, the engine circuit being mounted on the vehicle frame, the engine circuit being used to heat or cool the vehicle's engine; and an expansion tank as described in any one of the above, the expansion tank being mounted on the vehicle frame, the first chamber being connected to the battery circuit, the second chamber being connected to the electric drive circuit, and the third chamber being connected to the engine circuit.

[0015] In the present application, a first chamber for communicating with a battery circuit, a second chamber for communicating with an electric drive circuit, and a third chamber for communicating with an engine circuit are respectively provided in a shell, thereby reducing the number of shells and thus reducing the cost of the expansion tank; in addition, one expansion tank is respectively connected with the battery circuit, the electric drive circuit and the engine circuit, thereby reducing the number of required expansion tanks and thus reducing the space occupied by the expansion tank installation, which is beneficial to reducing the overall size of the vehicle and also facilitates the installation of more functional modules in a limited space, thereby facilitating the improvement of the vehicle's performance.

[0016] It should be understood that the foregoing general description and the following detailed description are merely illustrative and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic structural diagram of an expansion tank provided in this application in one embodiment;

[0018] Figure 2 for Figure 1 perspective drawing;

[0019] Figure 3 for Figure 1 Bottom view of

[0020] Figure 4 is a schematic diagram of the distribution of the first through holes and the second through holes in one embodiment;

[0021] Figure 5 is a schematic diagram of a distribution of the first through holes and the second through holes in another embodiment;

[0022] Figure 6 for Figure 1 Side view of

[0023] Figure 7 for Figure 6 a cross-sectional view in one embodiment;

[0024] Figure 8 for Figure 6 A cross-sectional view in another embodiment;

[0025] Figure 9 This is a schematic diagram of the connection structure between the expansion tank and the frame provided in this application.

[0026] Reference numerals:

[0027] 10- frame;

[0028] 20-Expansion tank;

[0029] 1- housing;

[0030] 11- cavity;

[0031] 111-first cavity;

[0032] 112-Second cavity;

[0033] 113-third cavity;

[0034] 114-first thermal insulation cavity;

[0035] 115- second thermal insulation cavity;

[0036] 116-Connecting channel;

[0037] 12-through hole;

[0038] 121-first through hole;

[0039] 122-second through hole;

[0040] 13- first fluid infusion port;

[0041] 14- Second fluid infusion port;

[0042] 15-opening;

[0043] 16-highest position mark;

[0044] 17-Lowest position mark;

[0045] 2-partition;

[0046] 21- first partition;

[0047] 22- second partition;

[0048] 23- third partition;

[0049] 24- fourth partition;

[0050] 25-fifth partition;

[0051] 3-first cover;

[0052] 4- second cover;

[0053] 5-first liquid outlet;

[0054] 6- second liquid outlet;

[0055] 7-The third liquid outlet.

[0056] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application. DETAILED DESCRIPTION

[0057] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0058] It should be clear that the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0059] The terms used in the embodiments of the present application are for the purpose of describing specific embodiments only and are not intended to limit the present application. The singular forms "a", "an", "the" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise.

[0060] It should be understood that the term "and / or" as used herein is merely a description of the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0061] It should be noted that the directional words such as "upper", "lower", "left", and "right" described in the embodiments of the present application are described based on the angles shown in the accompanying drawings and should not be understood as limiting the embodiments of the present application. In addition, in the context, it should be understood that when it is mentioned that an element is connected to another element "on" or "under", it can not only be directly connected to the other element "on" or "under", but also be indirectly connected to the other element "on" or "under" through an intermediate element.

[0062] In a first aspect, an embodiment of the present application provides an expansion tank 20, such as Figure 1 As shown, the expansion box 20 includes a first direction X, a second direction Y and a third direction Z that are perpendicular to each other. The third direction Z is the height direction of the expansion box 20. Of the first direction X and the second direction Y, one is the length direction of the expansion box 20 and the other is the width direction of the expansion box 20. Figure 1 and Figure 2 As shown, the expansion tank 20 includes a shell 1, which encloses a cavity 11. The cavity 11 is used to accommodate a medium, which is used to regulate the temperature of the vehicle's engine, battery, and electric drive system to ensure the normal operation of the engine, battery, and electric drive system; Figure 2 As shown, the expansion tank 20 also includes a partition 2, which is connected to the outer shell 1. The cavity 11 is divided into a first chamber 111, a second chamber 112 and a third chamber 113 by the partition 2. The outer shell 1 is provided with a first liquid outlet 5, a second liquid outlet 6 and a third liquid outlet 7. The first chamber 111 is connected to the battery circuit of the vehicle through the first liquid outlet 5, the second chamber 112 is connected to the electric drive circuit of the vehicle through the second liquid outlet 6, and the third chamber 113 is connected to the engine circuit of the vehicle through the third liquid outlet 7.

[0063] In this embodiment, a first chamber 111 for communicating with a battery circuit, a second chamber 112 for communicating with an electric drive circuit, and a third chamber 113 for communicating with an engine circuit are respectively provided in a housing 1, thereby reducing the number of housings 1 and thus reducing the cost of the expansion tank 20. In addition, when a vehicle uses the expansion tank 20 provided in the embodiment of the present application, the number of required expansion tanks 20 is reduced, thereby reducing the space occupied by the installation of the expansion tank 20, which is beneficial to reducing the overall size of the vehicle and facilitating the installation of more functional modules in a limited space, thereby facilitating the improvement of vehicle performance.

[0064] Among them, the partition 2 and the shell 1 can be formed as one piece, or can be set separately and fixedly connected. The embodiment of the present application does not specifically limit the connection and fixing method of the partition 2 and the shell 1.

[0065] like Figure 2 As shown, the partition 2 includes a first partition 21 and a second partition 22 spaced apart along a first direction X. In the first direction X, the first cavity 111 and the second cavity 112 are located on the side of the first partition 21 away from the second partition 22, and the third cavity 113 is located on the side of the second partition 22 away from the first partition 21; the first partition 21, the second partition 22 and part of the outer shell 1 form a first insulation cavity 114.

[0066] In this embodiment, the temperatures of the media required by the engine, battery and drive system are different. For example, the temperature of the medium in the third cavity 113 is higher than the temperature of the medium in the first cavity 111 and the second cavity 112. Therefore, a first insulation cavity 114 is arranged between the third cavity 113 and the first cavity 111 and the second cavity 112. The first insulation cavity 114 can reduce the risk of heat exchange between the medium in the third cavity 113 and the medium in the first cavity 111 and the second cavity 112, thereby improving the accuracy and reliability of temperature regulation of the engine, battery and drive system by the engine circuit, battery circuit and drive circuit.

[0067] like Figure 2 and Figure 3 As shown, a through hole 12 is provided on the housing 1 , and along the third direction Z, the first heat insulation cavity 114 is connected to the outside through the through hole 12 .

[0068] In this embodiment, since the temperature of the medium in the third chamber 113 is different from the temperature of the medium in the first chamber 111 and the second chamber 112, the pressure on both sides of the first insulation chamber 114 in the first direction X is different. The first insulation chamber 114 is connected to the outside world through the through hole 12, which reduces the risk of deformation or even damage of the first partition 21 and / or the second partition 22 under the action of the pressure difference on both sides, thereby improving the service life of the expansion pot; in addition, the through hole 12 can also introduce the high temperature in the first insulation chamber 114 into the outside air, thereby reducing the influence of the temperature in the first insulation chamber 114 on the temperature of the medium in the cavity 11, thereby further improving the accuracy and reliability of the temperature regulation of the engine, battery and drive system by the engine circuit, battery circuit and drive circuit.

[0069] In one embodiment, in the third direction Z, the through hole 12 is only provided on one side of the first thermal insulation cavity 114; in another embodiment, as shown in FIG. Figure 4 and Figure 5As shown, the through hole 12 includes at least one first through hole 121 and at least one second through hole 122. In the third direction Z, the first through hole 121 is located on one side of the first insulation cavity 114, and the second through hole 122 is located on the other side of the first insulation cavity 114. The first through hole 121 and the second through hole 122 are directly opposite to each other in the third direction Z, or the first through hole 121 and the second through hole 122 are arranged in an alternating manner, thereby improving the diversity of the arrangement of the through hole 12.

[0070] like Figure 7 As shown, the partition 2 also includes a third partition 23 and a fourth partition 24 spaced apart along the second direction Y. In the second direction Y, the first cavity 111 is located on the side of the third partition 23 away from the fourth partition 24, and the second cavity 112 is located on the side of the fourth partition 24 away from the third partition 23; the gap between the third partition 23 and the fourth partition 24 forms a second insulation cavity 115.

[0071] In this embodiment, the temperatures of the media required by the battery and the drive system may also be different. Therefore, a second insulation chamber 115 is set between the first chamber 111 and the second chamber 112. The second insulation chamber 115 can reduce the risk of heat exchange between the medium in the first chamber 111 and the medium in the second chamber 112, thereby improving the accuracy and reliability of the battery circuit and the drive circuit in temperature regulation of the battery and the drive system.

[0072] like Figure 2 and Figure 7 As shown, the housing 1 is provided with a first fluid infusion port 13 and a second fluid infusion port 14. The first fluid infusion port 13 is communicated with the first cavity 111 and the second cavity 112 respectively. The filling device can replenish the medium into the first cavity 111 and the second cavity 112 at the same time through the first fluid infusion port 13. The second fluid infusion port 14 is communicated with the third cavity 113. The filling device can replenish the medium into the third cavity 113 through the second fluid infusion port 14.

[0073] In this embodiment, the first chamber 111 and the second chamber 112 replenish the medium through a liquid replenishment port, which reduces the number of filling devices used to replenish the medium, thereby reducing the cost of replenishing the medium. At the same time, it reduces the operations of replenishing the medium, so as to improve the efficiency of medium replenishment.

[0074] Among them, a first cover body 3 is provided at the first fluid infusion port 13, and a second cover body 4 is provided at the second fluid infusion port 14. The first cover body 3 and the second cover body 4 are used to seal the first fluid infusion port 13 and the second fluid infusion port 14 respectively. During the use of the expansion tank 20, the provision of the first cover body 3 and the second cover body 4 can reduce the risk of the medium in the cavity 11 overflowing through the first fluid infusion port 13 and the second fluid infusion port 14, thereby extending the use time of the medium in the expansion tank 20.

[0075] In one possible design, Figure 8 As shown, the partition 2 completely blocks the first cavity 111 and the second cavity 112 in the third direction Z, and the first cavity 111 and the second cavity 112 are connected through the liquid inlet and the first liquid replenishing port 13 on the housing 1.

[0076] In another possible design, such as Figure 7 As shown, the partition 2 blocks a portion of the first cavity 111 and the second cavity 112 in the third direction Z. Specifically, as Figure 7 As shown, the partition 2 also includes a fifth partition 25. Along the third direction Z, the fifth partition 25 is located between the third partition 23 and the first fluid infusion port 13 and between the fourth partition 24 and the first fluid infusion port 13. The fifth partition 25 is used to block one end of the second insulation cavity 115 close to the first fluid infusion port 13; in the third direction Z, the gap between the fifth partition 25 and the first fluid infusion port 13 forms a connecting channel 116, and the first cavity 111 and the second cavity 112 are connected through the connecting channel 116.

[0077] In this embodiment, the third, fourth, and fifth partitions 23, 24, and 25 are generally U-shaped. The fifth partition 25 blocks the end of the second insulation chamber 115 near the first fluid infusion port 13, reducing the risk of medium entering the second insulation chamber 115 during medium replenishment, resulting in medium waste. This reduces the cost of medium replenishment for the expansion tank 20 and also reduces the risk of medium leakage. The first chamber 111 and the second chamber 112 are connected by a connecting passage 116. During medium replenishment, the medium at the first fluid infusion port 13 enters the connecting passage 116 and simultaneously enters the first and second chambers 111, 112. The connecting passage 116 reduces the risk of the partition 2 blocking a portion of the first fluid infusion port 13, thereby facilitating smoother medium replenishment and, consequently, improving medium replenishment efficiency.

[0078] Specifically, if Figure 6 As shown, a lowest position mark 17 and a highest position mark 16 are provided on the housing 1. When the height of the medium in the cavity 11 is lower than the lowest position mark 17, it is necessary to replenish the medium into the cavity 11 to reduce the risk of abnormal temperature of the battery, electric drive system and engine due to insufficient medium in the circuit; when the height of the medium in the cavity 11 reaches the highest position mark 16, the replenishment of the medium into the cavity 11 is stopped to reduce the risk of medium overflow.

[0079] like Figure 7As shown, in the third direction Z, the vertical distance between the fifth partition 25 and the first fluid replenishing port 13 is H1, and the vertical distance between the highest position mark 16 and the first fluid replenishing port 13 is H2, H1≤H2, that is, the setting height of the fifth partition 25 is not lower than the setting height of the highest position mark 16. After the medium is replenished, the risk of the medium in the first cavity 111 entering the second cavity 112 through the connecting channel 116 is reduced, thereby reducing the risk of the medium in the first cavity 111 and the second cavity 112 mixing, resulting in abnormal temperature of the medium in the first cavity 111 and the second cavity 112, thereby improving the accuracy and reliability of the battery circuit and the drive circuit in temperature regulation of the battery and the drive system.

[0080] like Figure 7 As shown, an opening 15 is provided on the housing 1 . In the third direction Z, the side of the second heat-insulating cavity 115 facing away from the first liquid infusion port 13 is in communication with the outside through the opening 15 .

[0081] In this embodiment, when the temperature of the medium in the first chamber 111 is different from the temperature of the medium in the second chamber 112, the pressure in the first chamber 111 and the second chamber 112 are different, and the second insulation chamber 115 is connected to the outside through the opening 15, reducing the risk of deformation or even damage of the third partition 23, the fourth partition 24 and the fifth partition 25 under the action of the pressure difference on both sides, thereby improving the service life of the expansion pot; in addition, the opening 15 can also introduce the high temperature in the second insulation chamber 115 into the outside air, thereby reducing the influence of the temperature in the second insulation chamber 115 on the temperature of the medium in the cavity 11, thereby further improving the accuracy and reliability of the temperature regulation of the engine, battery and drive system by the engine circuit, battery circuit and drive circuit.

[0082] A second aspect of an embodiment of the present application provides a vehicle, which includes a frame 10, a battery circuit, an electric drive circuit, an engine circuit installed on the frame 10, and an expansion tank 20 in any of the above embodiments. The battery circuit is used to heat or cool the battery of the vehicle, the electric drive circuit is used to heat or cool the electric drive system of the vehicle, and the engine circuit is used to heat or cool the engine of the vehicle. The first chamber 111 of the expansion tank 20 is connected to the battery circuit, the second chamber 112 of the expansion tank 20 is connected to the electric drive circuit, and the third chamber 113 of the expansion tank 20 is connected to the engine circuit.

[0083] In this embodiment, the expansion tank 20 is used to replenish medium within the battery circuit, electric drive circuit, and engine circuit, ensuring sufficient medium flow within these circuits. This reduces the risk of abnormal temperature conditions within the battery, electric drive system, and engine due to insufficient medium flow, thereby improving the operational stability of the battery, electric drive system, and engine and extending their service life. Furthermore, the expansion tank 20 is used to regulate the pressure within these circuits, reducing the risk of slow medium flow within the circuits due to low pressure, thereby improving the temperature regulation efficiency of the battery, electric drive system, and engine. Furthermore, it reduces the risk of damage to the piping within the circuits due to high pressure, thereby extending the service life and operational stability of these circuits. A single expansion tank 20 is connected to each of the battery circuit, electric drive circuit, and engine circuit, reducing the number of expansion tanks 20 required and the space occupied by the expansion tanks 20. This reduces the overall size of the vehicle and facilitates the installation of more functional modules within a limited space, thereby improving vehicle performance.

[0084] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. An expansion tank, characterized in that: The expansion tank (20) comprises: A housing (1), wherein the housing (1) encloses a cavity (11); A partition (2) is connected to the housing (1); the cavity (11) is divided by the partition (2) into a first cavity (111), a second cavity (112), and a third cavity (113); the first cavity (111) is used to communicate with a battery circuit of a vehicle; the second cavity (112) is used to communicate with an electric drive circuit of the vehicle; and the third cavity (113) is used to communicate with an engine circuit of the vehicle.

2. The expansion tank according to claim 1, characterized in that The partition (2) comprises a first partition (21) and a second partition (22) spaced apart along a first direction (X); in the first direction (X), the first cavity (111) and the second cavity (112) are located on a side of the first partition (21) facing away from the second partition (22); and the third cavity (113) is located on a side of the second partition (22) facing away from the first partition (21); The first partition plate (21), the second partition plate (22) and a portion of the outer shell (1) form a first heat-insulating cavity (114).

3. The expansion tank according to claim 2, characterized in that A through hole (12) is provided on the housing (1), and along the third direction (Z), the first heat-insulating cavity (114) is in communication with the outside through the through hole (12).

4. The expansion tank according to claim 3, characterized in that The through hole (12) comprises at least one first through hole (121) and at least one second through hole (122); in the third direction (Z), the first through hole (121) is located on one side of the first heat insulation cavity (114), and the second through hole (122) is located on the other side of the first heat insulation cavity (114).

5. The expansion tank according to claim 1, characterized in that The partition (2) further comprises a third partition (23) and a fourth partition (24) spaced apart along a second direction (Y); in the second direction (Y), the first cavity (111) is located on a side of the third partition (23) facing away from the fourth partition (24), and the second cavity (112) is located on a side of the fourth partition (24) facing away from the third partition (23); The gap between the third partition plate (23) and the fourth partition plate (24) forms a second heat insulation cavity (115).

6. The expansion tank according to claim 5, characterized in that The housing (1) is provided with a first fluid infusion port (13), and the first fluid infusion port (13) is communicated with the first cavity (111) and the second cavity (112) respectively.

7. The expansion tank according to claim 6, characterized in that The partition (2) further includes a fifth partition (25), and along the third direction (Z), the fifth partition (25) is located between the third partition (23) and the first fluid infusion port (13) and between the fourth partition (24) and the first fluid infusion port (13), and the fifth partition (25) is used to block an end of the second heat insulation cavity (115) close to the first fluid infusion port (13); In the third direction (Z), a gap between the fifth partition plate (25) and the first fluid infusion port (13) forms a communication channel (116), and the first cavity (111) and the second cavity (112) are connected through the communication channel (116).

8. The expansion tank according to claim 7, characterized in that The housing (1) is provided with a highest position mark (16); in the third direction (Z), the vertical distance between the fifth partition (25) and the first fluid infusion port (13) is H1, and the vertical distance between the highest position mark (16) and the first fluid infusion port (13) is H2, where H1≤H2.

9. The expansion tank according to claim 7, characterized in that An opening (15) is provided on the housing (1), and in the third direction (Z), a side of the second heat-insulating cavity (115) facing away from the first fluid infusion port (13) is in communication with the outside world through the opening (15).

10. A vehicle, characterized in that: The vehicle comprises: Frame (10); A battery circuit, the battery circuit being mounted on the vehicle frame (10), the battery circuit being used to heat or cool a battery of the vehicle; An electric drive circuit, the electric drive circuit being mounted on the vehicle frame (10), the electric drive circuit being used to heat or cool the electric drive system of the vehicle; An engine circuit, the engine circuit being mounted on the vehicle frame (10), the engine circuit being used to heat or cool the engine of the vehicle; The expansion tank (20) according to any one of claims 1 to 9, wherein the expansion tank (20) is mounted on the vehicle frame (10), the first chamber (111) is connected to the battery circuit, the second chamber (112) is connected to the electric drive circuit, and the third chamber (113) is connected to the engine circuit.

Images