Water supplementing and heat dissipating device for engineering vehicle heat management system

Abstract

The utility model relates to the technical field of engineering vehicles, and discloses a water supplementing and heat dissipating device for an engineering vehicle heat management system, the water supplementing and heat dissipating device comprises a water tank, a radiator used for cooling a battery pack and an exhaust pipe, the water tank is provided with a liquid outlet, the radiator is provided with a liquid supplementing port communicated with the liquid outlet, and the liquid outlet and the liquid supplementing port are located at the same end of the water tank; the water tank is located above the radiator and the battery pack, the exhaust pipe is provided with a first end communicated with the water tank and a second end communicated with the radiator, the first end is located on the upper portion of the water tank, and the second end is located on the upper portion of the radiator, so that air in the radiator enters the water tank through the exhaust pipe, and exhaust of the radiator and the communicating pipeline is achieved. The cooling or heating efficiency of the battery pack is further ensured; and a communicating pipeline between the water tank and the radiator is shortened, so that the production cost of the water replenishing and radiating device is reduced, the risk of water leakage of the water replenishing and radiating device is reduced, the fault rate of the water replenishing and radiating device is reduced, and the use experience of a user is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of engineering vehicles, and specifically relates to a water replenishment and heat dissipation device for a thermal management system of an engineering vehicle. Background Art

[0002] Electric and hybrid engineering vehicles are gradually entering the market. In order to increase the range of engineering vehicles, existing electric and hybrid vehicles are equipped with a thermal management system to cool or heat the battery pack, so that the battery pack works at a relatively optimal temperature, thereby achieving the effect of increasing the range of electric or hybrid engineering vehicles.

[0003] In the related art, the thermal management system of engineering vehicles includes a water tank, a water pump, a heater and a radiator. When cooling the battery, the water pump pumps the cooling medium in the water tank to the battery through the radiator, and then the cooling medium takes away the heat of the battery to achieve the effect of cooling the battery; when heating the battery pack, the water pump heats the cooling medium in the water tank through the heater and pumps it to the battery pack, so that the heat of the cooling medium is transferred to the battery pack to achieve heating of the battery pack. However, when the water tank is filled with cooling medium, air may enter the connecting pipe and the battery pack and cannot be discharged in time, thus affecting the cooling or heating efficiency of the battery pack. Utility Model Content

[0004] The present application provides a water replenishment and heat dissipation device for a thermal management system of an engineering vehicle, which can discharge air in a timely manner, thereby ensuring the cooling or heating efficiency of a battery pack.

[0005] The technical solution adopted in this application is:

[0006] A water replenishment and heat dissipation device for a thermal management system of an engineering vehicle, comprising a water tank, a radiator for cooling a battery pack, and an exhaust pipe, wherein the water tank has a liquid outlet, the radiator has a liquid replenishment port connected to the liquid outlet, the liquid outlet and the liquid replenishment port are located at the same end of the water tank, the water tank is located above the radiator and the battery pack, the exhaust pipe has a first end connected to the water tank and a second end connected to the radiator, the first end is located at the upper part of the water tank, and the second end is located at the upper part of the radiator, so that air in the radiator enters the water tank via the exhaust pipe.

[0007] By adopting the above technical solution, since the water tank is located above the radiator and the battery pack, and the first end of the exhaust pipe is located at the upper part of the water tank and the second end is located at the upper part of the radiator, when replenishing the cooling medium into the radiator, the air entering the radiator core and the connecting pipeline can enter the water tank through the exhaust pipe to realize the exhaust of the radiator and the connecting pipeline, thereby ensuring the cooling or heating efficiency of the battery pack. Moreover, since the liquid outlet and the liquid replenishing port are located at the same end of the water tank, the connecting pipeline between the water tank and the radiator is shortened, so as to reduce the production cost of the water replenishing and heat dissipation device, and at the same time reduce the risk of water leakage of the water replenishing and heat dissipation device, thereby reducing the failure rate of the water replenishing and heat dissipation device and improving the user experience.

[0008] Optionally, the exhaust pipe is located outside the water tank, and the exhaust pipe is provided with a control valve for controlling the connection or disconnection between the water tank and the radiator.

[0009] By adopting the above technical solution, since the exhaust pipe is located outside the water tank, the installation difficulty of the exhaust pipe is reduced, so as to improve the installation efficiency of the exhaust pipe, and at the same time it is convenient to replace the damaged or aged exhaust pipe to extend the service life of the water replenishing and heat dissipation device. And the control valve is used to control the connection between the water tank and the radiator. After replenishing the cooling medium into the radiator, the control valve can be closed to disconnect the connection between the water tank and the radiator through the exhaust pipe.

[0010] Optionally, the exhaust pipe is located inside the water tank and extends vertically.

[0011] By adopting the above technical solution, since the exhaust pipe is located inside the water tank, the exhaust pipe can be hidden inside the water tank to avoid damage to the exhaust pipe, and at the same time the volume of the water replenishing and heat dissipation device can be reduced to achieve the effect of facilitating the installation of the water replenishing and heat dissipation device.

[0012] Optionally, the water tank is provided with an exhaust interface, and the exhaust interface is located at the upper part of the water tank.

[0013] By adopting the above technical solution, since the water tank is provided with an exhaust interface, the connecting pipeline connecting the battery pack can be connected to the exhaust interface through a pipeline, so that the air in the connecting pipeline can be discharged into the water tank in time to ensure the cooling or heating efficiency of the battery pack.

[0014] Optionally, the inside of the radiator has a circulation cavity, the top of the radiator has a reinforcing beam, the reinforcing beam forms at least part of the cavity wall of the circulation cavity, and the water tank is arranged on the top of the reinforcing beam.

[0015] By adopting the above technical solution, since the reinforcing beam forms at least part of the wall of the circulation cavity, the structural strength of the top wall of the circulation cavity is increased, thereby increasing the service life of the radiator. At the same time, the water tank is arranged on the top of the reinforcing beam, thus ensuring the connection stability between the water tank and the radiator.

[0016] Optionally, the reinforcing beam includes a web and flange plates arranged on both sides of the web. The water tank is arranged on the web, and the second end is arranged on the web or one of the flange plates.

[0017] By adopting the above technical solution, since the reinforcing beam includes a web and flange plates arranged on both sides of the web, the cross-sectional shape of the reinforcing beam is a C shape, thereby increasing the structural strength of the reinforcing beam and increasing the wall of the circulation cavity formed by the reinforcing beam to increase the service life of the radiator. Since the water tank is arranged on the web, the reinforcing beam can support the water tank to increase the connection stability between the water tank and the radiator. Since the second end is arranged on the web or one of the flange plates, the connection stability between the exhaust pipe and the radiator is increased.

[0018] Optionally, a plurality of reinforcing fins are arranged at intervals inside the water tank. Each reinforcing fin has a central hole, and the outer peripheral surface of each reinforcing fin is connected to the inner wall of the water tank.

[0019] By adopting the above technical solution, since the outer peripheral surfaces of the reinforcing fins are all connected to the inner wall of the water tank, the reinforcing fins can increase the structural strength of the water tank to increase the service life of the water tank. At the same time, each reinforcing fin has a central hole, so that the spaces on both sides of the reinforcing fin are connected through the central hole, enabling the water in the water tank to flow on both sides of the reinforcing fin under the action of the central hole to ensure normal replenishment of the cooling medium for the radiator. And when the engineering vehicle is driving on a bumpy road, the reinforcing fins can also block the cooling medium in the water tank, so that the reinforcing fins play a buffering role for the cooling medium to reduce the oscillation of the cooling medium.

[0020] Optionally, avoiding notches are arranged on both opposite sides of the bottom of each reinforcing fin, so that communication channels are formed between both opposite sides of the bottom of the reinforcing fin and the inner wall of the water tank.

[0021] By adopting the above technical solution, by arranging avoiding notches on both opposite sides of the bottom of the reinforcing fin, communication channels are formed between both opposite sides of the bottom of the reinforcing fin and the inner wall of the water tank, so that the spaces on both sides of the reinforcing fin are connected through the communication channels to ensure that the liquid levels of the cooling medium in the water tank are flush, so that when the cooling medium in the water tank is lower than the central hole, the cooling medium can still enter the radiator. In addition, the arrangement of the avoiding notches also reduces the weight of the water replenishing and heat dissipating device to achieve the effect of facilitating the installation of the water replenishing and heat dissipating device.

[0022] Optionally, the top of the water tank has a filling port, which is located between two adjacent reinforcing pieces, and a cover body for sealing the filling port is detachably connected to the filling port.

[0023] By adopting the above technical solution, since the filling port is located between two adjacent reinforcing pieces, when the engineering vehicle is driving on a bumpy road surface, the reinforcing pieces play a buffering role on the cooling medium, so as to avoid the situation that the oscillating cooling medium overflows through the filling port, thus ensuring the cleanliness of the water tank and further improving the user experience.

[0024] Optionally, the water tank is arranged on the top of the radiator, and the bottom of the water tank has an installation area protruding from the side of the radiator, and a liquid level sensor extending into the water tank is arranged in the installation area.

[0025] By adopting the above technical solution, since the installation area protrudes from the side of the radiator and the liquid level sensor is arranged in the installation area, the water tank can block the liquid level sensor in the vertical downward direction, so that the water tank protects the liquid level sensor, thereby reducing the risk of damage to the liquid level sensor. In addition, it can also make the structure of the water replenishing and heat dissipating device more compact.

[0026] Due to the adoption of the above technical solution, the beneficial effects obtained by this application are as follows:

[0027] 1. The water replenishing and heat dissipating device in this application includes a water tank, a radiator for cooling the battery pack, and an exhaust pipe. The water tank has a liquid outlet, and the radiator has a liquid replenishing port communicated with the liquid outlet. The liquid outlet and the liquid replenishing port are located at the same end of the water tank. The water tank is located above the radiator and the battery pack. The exhaust pipe has a first end communicated with the water tank and a second end communicated with the radiator. The first end is located at the upper part of the water tank, and the second end is located at the upper part of the radiator, so that the air in the radiator enters the water tank through the exhaust pipe to realize the exhaust of the radiator and the connecting pipeline, and further ensure the cooling or heating efficiency of the battery pack; and, since the liquid outlet and the liquid replenishing port are located at the same end of the water tank, the connecting pipeline between the water tank and the radiator is shortened, so as to reduce the production cost of the water replenishing and heat dissipating device, and at the same time reduce the risk of water leakage of the water replenishing and heat dissipating device, thereby reducing the failure rate of the water replenishing and heat dissipating device and improving the user experience.

[0028] 2. The exhaust pipe in this application is located outside the water tank, thereby reducing the installation difficulty of the exhaust pipe, improving the installation efficiency of the exhaust pipe, and at the same time facilitating the replacement of the damaged or aged exhaust pipe to extend the service life of the water replenishing and heat dissipating device. And the exhaust pipe is provided with a control valve for controlling the connection or disconnection between the water tank and the radiator. After the cooling medium is replenished to the radiator, the control valve can be closed to disconnect the connection between the water tank and the radiator through the exhaust pipe.

[0029] 3. The exhaust pipe in this application is located inside the water tank and extends vertically, so that the exhaust pipe can be hidden inside the water tank to avoid damage to the exhaust pipe, and at the same time, the volume of the water replenishing and heat dissipating device can be reduced to achieve the effect of facilitating the installation of the water replenishing and heat dissipating device. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings described herein are used to provide a further understanding of this application and form a part of this application. The schematic embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation to this application. In the drawings:

[0031] Figure 1 is a schematic structural diagram of the water replenishing and heat dissipating device under one embodiment of this application;

[0032] Figure 2 is a schematic structural diagram of another perspective of the water replenishing and heat dissipating device under one embodiment of this application, and the cooling fan is omitted in this figure;

[0033] Figure 3 is a partial structural cross-sectional view of the water replenishing and heat dissipating device under another embodiment of this application.

[0034] REFERENCE NUMERALS:

[0035] 1. Water tank; 11. Liquid outlet; 12. Exhaust interface; 13. Reinforcing piece; 131. Central hole; 132. Avoidance notch; 14. Cover body; 15. Liquid level sensor; 2. Radiator; 21. Radiator core; 211. Liquid replenishing port; 212. Reinforcing beam; 22. Cooling fan; 23. Air guide cover; 24. Connection frame; 241. Connection piece; 3. Exhaust pipe; 31. Control valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] In order to more clearly illustrate the overall concept of this application, the following will be described in detail by way of examples in combination with the drawings of the specification.

[0037] In the following description, many specific details are set forth in order to fully understand this application. However, this application can also be implemented in other ways different from those described herein. Therefore, the protection scope of this application is not limited by the specific embodiments disclosed below. It should be noted that, without conflict, the embodiments of this application and the features in each embodiment can be combined with each other.

[0038] In addition, in the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0039] In the present application, unless otherwise clearly defined and limited, terms such as "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0040] In the present application, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0041] Refer to Figures 1 to 3 , a water replenishing and heat dissipation device for an engineering vehicle thermal management system is disclosed, which includes a water tank 1, a radiator 2 for cooling a battery pack, and an exhaust pipe 3. The water tank 1 has a liquid outlet 11, the radiator 2 has a liquid replenishing port 211 communicated with the liquid outlet 11, the liquid outlet 11 and the liquid replenishing port 211 are located at the same end of the water tank 1, the water tank 1 is located above the radiator 2 and the battery pack, the exhaust pipe 3 has a first end communicated with the water tank 1 and a second end communicated with the radiator 2, the first end is located at the upper part of the water tank 1, and the second end is located at the upper part of the radiator 2, so that the air in the radiator 2 enters the water tank 1 through the exhaust pipe 3.

[0042] It can be understood that the liquid outlet 11 of the water tank 1 is located at the lower part of the water tank 1, and the liquid replenishing port 211 of the radiator 2 is located at the upper part of the radiator 2.

[0043] When using the water replenishing and heat dissipation device in this application, the radiator 2 needs to be connected to other components of the thermal management system so that the cooling medium in the radiator 2 can enter the cooling channel of the battery pack under the action of other components to achieve heat dissipation or heating of the battery pack, so that the battery pack works at a better temperature, thereby increasing the cruising range of the engineering vehicle.

[0044] Since the water tank 1 is located above the radiator 2 and the battery pack, and the first end of the exhaust pipe 3 is located in the upper part of the water tank 1 and the second end is located in the upper part of the radiator 2, when replenishing the cooling medium into the radiator 2, the air entering the radiator core 21 and the connecting pipeline can enter the water tank 1 through the exhaust pipe 3 to achieve exhaust of the radiator 2 and the connecting pipeline, thereby ensuring the cooling or heating efficiency of the battery pack.

[0045] Moreover, since the liquid outlet 11 and the liquid replenishing port 211 are located at the same end of the water tank 1, the connecting pipeline between the water tank 1 and the radiator 2 is shortened, thereby reducing the production cost of the water replenishing and heat dissipation device, reducing the risk of water leakage of the water replenishing and heat dissipation device, and further reducing the failure rate of the water replenishing and heat dissipation device and improving the user experience.

[0046] This application does not specifically limit the installation position of the exhaust pipe 3, and any one of the following implementation manners can be adopted:

[0047] Embodiment 1. In this embodiment, referring to Figure 1 and Figure 2 , the exhaust pipe 3 is located outside the water tank 1, and the exhaust pipe 3 is provided with a control valve 31 for controlling the connection or disconnection between the water tank 1 and the radiator 2.

[0048] Since the exhaust pipe 3 is located outside the water tank 1, the installation difficulty of the exhaust pipe 3 is reduced, so as to improve the installation efficiency of the exhaust pipe 3. At the same time, it is convenient to replace the damaged or aged exhaust pipe 3 to extend the service life of the water replenishing and heat dissipation device. And the control valve 31 is used to control the connection between the water tank 1 and the radiator 2 through the exhaust pipe 3. After the cooling medium is replenished into the radiator 2, the control valve 31 can be closed to disconnect the connection between the water tank 1 and the radiator 2 through the exhaust pipe 3.

[0049] This application does not specifically limit the structure of the control valve 31. It can be a solenoid valve or a manual valve shown in the drawings.

[0050] Embodiment 2. In this embodiment, referring to Figure 3 , the exhaust pipe 3 is located inside the water tank 1 and extends vertically, so that the exhaust pipe 3 can be hidden inside the water tank 1 to avoid damage to the exhaust pipe 3. At the same time, the volume of the water replenishing and heat dissipation device can be reduced to achieve the effect of facilitating the installation of the water replenishing and heat dissipation device.

[0051] It should be noted that the exhaust pipe 3 can be arranged to extend vertically, or it can also be arranged to extend in a direction at an angle to the vertical direction, as long as the first end of the exhaust pipe 3 is located above the water tank 1.

[0052] In a preferred embodiment, referring to Figure 1 and Figure 2 , the water tank 1 is provided with an exhaust interface 12, and the exhaust interface 12 is located above the water tank 1. Then, the connecting pipe communicating with the battery pack can be connected to the exhaust interface 12 through a pipe, so that the air in the connecting pipe can be discharged into the water tank 1 in time to ensure the cooling or heating efficiency of the battery pack.

[0053] This application does not specifically limit the number of the exhaust interfaces 12, and the number is determined according to the number of battery pack modules. For example, if there are two groups of battery pack modules located on both sides of the vehicle body, two exhaust interfaces 12 are provided at this time, so that the connecting pipes of the two battery pack modules can be connected to the corresponding exhaust interfaces 12 to ensure the exhaust effect of the connecting pipes.

[0054] In a preferred embodiment, referring to Figure 1 , Figure 2 and Figure 3 , the interior of the radiator 2 has a circulation cavity, the top of the radiator 2 has a reinforcing beam 212, and the reinforcing beam 212 constitutes at least part of the cavity wall of the circulation cavity. The water tank 1 is arranged on the top of the reinforcing beam 212.

[0055] It should be noted that the radiator 2 includes a radiator core 21 and a cooling fan 22 arranged on the side of the radiator core. The cooling fan 22 is used to cool the radiator core 21 to improve the cooling efficiency of the battery pack. The circulation cavity is arranged inside the radiator core 21, and the reinforcing beam 212 is arranged on the top of the radiator core 21, so that the reinforcing beam 212 constitutes at least part of the cavity wall of the circulation cavity.

[0056] Since the reinforcing beam 212 constitutes at least part of the cavity wall of the circulation cavity, the structural strength of the top cavity wall of the circulation cavity is increased, so as to increase the service life of the radiator 2. At the same time, the water tank 1 is arranged on the top of the reinforcing beam 212, thus ensuring the connection stability between the water tank 1 and the radiator 2.

[0057] Furthermore, referring to Figure 1 and Figure 2 , a wind guide cover 23 is arranged on the side of the radiator core 21. A cold air cavity is formed between the wind guide cover 23 and the radiator core 21. The cooling fan 22 is arranged in the wind guide cover 23 and communicated with the cold air cavity to improve the cooling effect on the radiator core 21, and thus ensure the cooling efficiency of the battery pack.

[0058] Further, referring to Figure 1 , Figure 2 and Figure 3 , the radiator 2 further includes a connection frame 24 disposed outside the radiator core 21. A connecting piece 241 extending in the horizontal direction is provided at the bottom of the connection frame 24. Both ends of the connecting piece 241 protrude from the side of the radiator core 21, and the connecting piece 241 is fixedly connected to the vehicle body of the engineering vehicle through a damping shock absorber and a fastener to reduce the transmission of the vibration of the vehicle body to the radiator core 21.

[0059] The present application does not specifically limit the structure of the reinforcing beam 212. Preferably, the reinforcing beam 212 includes a web and wing plates disposed on both sides of the web. That is to say, the cross-section of the reinforcing beam 212 perpendicular to its own length direction is C-shaped to increase the structural strength of the reinforcing beam 212 and at the same time increase the area of the cavity wall of the circulation cavity formed by the reinforcing beam 212 to increase the service life of the radiator 2; the water tank 1 is disposed on the web, and then the reinforcing beam 212 can support the water tank 1 to increase the connection stability between the water tank 1 and the radiator 2; the second end is disposed on the web or one of the wing plates, thereby increasing the connection stability between the exhaust pipe 3 and the radiator 2.

[0060] It should be noted that when the exhaust pipe 3 is disposed outside the water tank 1, the second end is disposed on the web; when the exhaust pipe 3 is disposed inside the water tank 1, the second end is disposed on one of the wing plates.

[0061] In other embodiments, the reinforcing beam 212 may also be a flat plate structure.

[0062] In a preferred embodiment, referring to Figure 3 , a plurality of reinforcing sheets 13 are spaced apart inside the water tank 1. Each reinforcing sheet 13 has a central hole 131, and the outer peripheral surface of each reinforcing sheet 13 is connected to the inner wall of the water tank 1.

[0063] Since the outer peripheral surfaces of the reinforcing sheets 13 are all connected to the inner wall of the water tank 1, the reinforcing sheets 13 can increase the structural strength of the water tank 1 to increase the service life of the water tank 1; at the same time, each reinforcing sheet 13 has a central hole 131, so that the spaces on both sides of the reinforcing sheet 13 are communicated through the central hole 131, so that the water in the water tank 1 can flow on both sides of the reinforcing sheet 13 under the action of the central hole 131 to ensure normal replenishment of the cooling medium for the radiator 2; and when the engineering vehicle is driving on a bumpy road surface, the reinforcing sheets 13 can also block the cooling medium in the water tank 1, so that the reinforcing sheets 13 play a buffering role on the cooling medium to reduce the oscillation of the cooling medium.

[0064] Further, referring to Figure 3, avoiding notches 132 are provided on both opposite sides of the bottom of each reinforcing piece 13, so that communication channels are formed between both opposite sides of the bottom of the reinforcing piece 13 and the inner wall of the water tank 1.

[0065] By providing the avoiding notches 132 on both opposite sides of the bottom of the reinforcing piece 13, communication channels are formed between both opposite sides of the bottom of the reinforcing piece 13 and the inner wall of the water tank 1, so that the spaces on both sides of the reinforcing piece 13 are communicated through the communication channels, ensuring that the liquid level of the cooling medium in the water tank 1 is flush. Thus, when the cooling medium in the water tank 1 is lower than the central hole 131, the cooling medium can still enter the radiator 2. In addition, the setting of the avoiding notches 132 also reduces the weight of the water replenishing and heat dissipating device, achieving the effect of facilitating the installation of the water replenishing and heat dissipating device.

[0066] Further, referring to Figure 3 , the top of the water tank 1 has a filling port, the filling port is located between two adjacent reinforcing pieces 13, and a cover body 14 for sealing the filling port is detachably connected to the filling port.

[0067] Since the filling port is located between two adjacent reinforcing pieces 13, when the engineering vehicle is driving on a bumpy road surface, the reinforcing piece 13 plays a buffering role for the cooling medium, avoiding the situation that the oscillating cooling medium overflows through the filling port, thus ensuring the cleanliness of the water tank 1 and further improving the user experience.

[0068] In a preferred embodiment, referring to Figure 1 and Figure 3 , the water tank 1 is arranged on the top of the radiator 2, and the bottom of the water tank 1 has an installation area protruding from the side of the radiator 2, and a liquid level sensor 15 extending into the water tank 1 is arranged in the installation area.

[0069] Since the installation area protrudes from the side of the radiator 2 and the liquid level sensor 15 is arranged in the installation area, the water tank 1 can block the liquid level sensor 15 in the vertically downward direction, so that the water tank 1 protects the liquid level sensor 15, reducing the risk of damage to the liquid level sensor 15. In addition, it can also make the structure of the water replenishing and heat dissipating device more compact.

[0070] It can be understood that the water tank 1 has a height direction parallel to the vertical direction, a length direction extending in the horizontal direction, and a thickness direction extending in the horizontal direction. The length direction of the water tank 1 is perpendicular to the thickness direction of the water tank 1; the radiator core 21 has a height direction extending in the vertical direction, a width direction extending in the horizontal direction, and a thickness direction extending in the horizontal direction. The width direction of the radiator core 21 is perpendicular to the thickness direction of the radiator core 21, and the thickness direction of the radiator core 21 is parallel to the width direction of the water tank 1. The width of the water tank 1 is greater than the thickness of the radiator core 21, so that after the water tank 1 is installed on the top of the radiator core 21, the bottom of the water tank 1 has an installation area protruding from the side of the radiator 2.

[0071] What is not described in this application can be achieved by adopting or referring to the existing technology.

[0072] Each embodiment in this specification is described in a progressive manner. For the same or similar parts among the embodiments, reference can be made to each other. The key point of each embodiment is to illustrate the differences from other embodiments.

[0073] The above description is only for the embodiments of this application and is not intended to limit this application. For those skilled in the art, various changes and modifications can be made to this application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included within the scope of the claims of this application.

Claims

1. A water supply and heat dissipation device for a thermal management system of an engineering vehicle, characterized in that: The invention comprises a water tank (1), a radiator (2) for cooling a battery pack, and an exhaust pipe (3); the water tank (1) has a liquid outlet (11); the radiator (2) has a liquid replenishing port (211) connected to the liquid outlet (11); the liquid outlet (11) and the liquid replenishing port (211) are located at the same end of the water tank (1); the water tank (1) is located above the radiator (2) and the battery pack; the exhaust pipe (3) has a first end connected to the water tank (1) and a second end connected to the radiator (2); the first end is located at the upper part of the water tank (1); and the second end is located at the upper part of the radiator (2), so that air in the radiator (2) enters the water tank (1) via the exhaust pipe (3).

2. The water supply and heat dissipation device for a thermal management system of an engineering vehicle according to claim 1, characterized in that: The exhaust pipe (3) is located outside the water tank (1), and the exhaust pipe (3) is provided with a control valve (31) for controlling the connection or disconnection between the water tank (1) and the radiator (2).

3. The water supply and heat dissipation device for a thermal management system of an engineering vehicle according to claim 1, characterized in that: The exhaust pipe (3) is located inside the water tank (1) and extends in a vertical direction.

4. The water supply and heat dissipation device for a thermal management system of an engineering vehicle according to claim 1, characterized in that: The water tank (1) is provided with an exhaust port (12), and the exhaust port (12) is located at the upper part of the water tank (1).

5. The water supply and heat dissipation device for a thermal management system of an engineering vehicle according to claim 1, characterized in that: The radiator (2) has a circulation cavity inside, the top of the radiator (2) has a reinforcing beam (212), the reinforcing beam (212) constitutes at least part of the cavity wall of the circulation cavity, and the water tank (1) is arranged on the top of the reinforcing beam (212).

6. The water supply and heat dissipation device for a thermal management system of an engineering vehicle according to claim 5, characterized in that: The reinforcing beam (212) comprises a web and wing plates arranged on both sides of the web, the water tank (1) is arranged on the web, and the second end is arranged on the web or one of the wing plates.

7. The water supply and heat dissipation device for a thermal management system of an engineering vehicle according to claim 1, characterized in that: A plurality of reinforcing sheets (13) are arranged at intervals inside the water tank (1), each reinforcing sheet (13) has a central hole (131), and the outer peripheral surface of each reinforcing sheet (13) is connected to the inner wall of the water tank (1).

8. The water supply and heat dissipation device for a thermal management system of an engineering vehicle according to claim 7, characterized in that: Each of the reinforcing sheets (13) is provided with avoidance notches (132) on two opposite sides of the bottom, so that communication channels are formed between the two opposite sides of the bottom of the reinforcing sheet (13) and the inner wall of the water tank (1).

9. The water supply and heat dissipation device for a thermal management system of an engineering vehicle according to claim 7, characterized in that: The top of the water tank (1) is provided with a filling port, the filling port is located between two adjacent reinforcing sheets (13), and a cover body (14) for sealing the filling port is detachably connected to the filling port.

10. The water supply and heat dissipation device for a thermal management system of an engineering vehicle according to claim 1, characterized in that: The water tank (1) is arranged on the top of the radiator (2), and the bottom of the water tank (1) has a mounting area protruding from the side of the radiator (2), and the mounting area is provided with a liquid level sensor (15) extending into the interior of the water tank (1).

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