Vehicle cooling liquid filling system and vehicle

Abstract

The utility model provides a vehicle cooling liquid filling system and a vehicle. The vehicle cooling liquid filling system comprises a cooling system, an expansion water tank, a water pump, a low-level liquid storage barrel, a cooling liquid pipeline and a control assembly. The cooling system, the expansion water tank, the water pump and the low-level liquid storage barrel are connected through a cooling liquid pipeline. The expansion water tank is arranged at the top of the vehicle, and the low-level liquid storage barrel is arranged below the expansion water tank. The control assembly is connected with the water pump. The control assembly comprises an instrument desk button used for controlling the water pump. The cooling liquid is stored in the low-level liquid storage barrel, and the cooling liquid in the low-level liquid storage barrel is convenient to supplement. Meanwhile, when the expansion water tank needs to be filled with the cooling liquid, the water pump can be directly controlled through an instrument desk button, the water pump can convey the cooling liquid in the low-level liquid storage barrel into the expansion water tank, and the cooling liquid is convenient to fill.

Description

Technical Field

[0001] This application relates to the field of vehicles, and more particularly to vehicle coolant filling systems and vehicles. Background Technology

[0002] As people's living standards improve, low-cost, high-capacity buses that are convenient for the elderly and children are becoming increasingly common. Driven by this market demand, low-floor, short-rear-overhang, or even zero-rear-overhang buses are gaining popularity. Because of their low floor and short rear overhang, the underframe of these buses has limited space for various systems. Except for systems that must be located under the vehicle body, other structures are placed on the roof as much as possible. Currently, the cooling system is located on the roof or in a high, side-mounted position. The expansion tank, which is usually located higher than the cooling system, is also located on the roof. Because of this high position, adding coolant is inconvenient, requiring manual refilling at a maintenance station using ladders or other equipment. This is cumbersome and prevents timely refilling.

[0003] Therefore, it is necessary to provide an improved vehicle coolant filling system and vehicle to solve the above problems. Utility Model Content

[0004] This application provides a vehicle coolant filling system and vehicle that are easy to operate and convenient to fill with coolant.

[0005] This application provides a vehicle coolant filling system, including a cooling system, an expansion tank, a water pump, a low-level reservoir, coolant piping, and a control component. The cooling system, the expansion tank, the water pump, and the low-level reservoir are connected via the coolant piping. The expansion tank is located on the top of the vehicle, and the low-level reservoir is located below the expansion tank. The control component is connected to the water pump and includes dashboard buttons for controlling the water pump.

[0006] Furthermore, the water pump and the low-level liquid storage tank are located in the rear compartment of the vehicle, and the cooling system is located below the expansion tank; the water pump is connected between the expansion tank and the low-level liquid storage tank.

[0007] Furthermore, the control component also includes a vehicle controller, which is connected to the dashboard buttons and the water pump respectively; the expansion tank is equipped with a liquid level sensor, and the vehicle coolant filling system also includes an instrument panel, which is connected to the liquid level sensor through the control component.

[0008] Furthermore, an electromagnetic valve is provided between the expansion tank and the water pump, and the electromagnetic valve is connected to the control component.

[0009] Furthermore, the cooling system includes a radiator and a heat dissipation module, the radiator and the heat dissipation module are connected through the coolant pipeline, and the expansion tank is connected to the radiator; the heat dissipation module includes a circulating water pump for transporting the coolant in the expansion tank to the cooling system.

[0010] Furthermore, the expansion tank includes a first expansion tank and a second expansion tank, both of which are connected to the water pump and the low-level storage tank via the coolant pipeline.

[0011] Furthermore, the cooling system includes an electric drive module and an engine module; the electric drive module includes a low-temperature radiator and an electric drive cooling module connected through the coolant pipeline, the low-temperature radiator being connected to the first expansion tank; the engine module includes a high-temperature radiator and an engine cooling module connected through the coolant pipeline, the high-temperature radiator being connected to the second expansion tank.

[0012] Furthermore, the first expansion tank is equipped with a first liquid level sensor, the second expansion tank is equipped with a second liquid level sensor, and the vehicle coolant filling system also includes an instrument panel, which is connected to the first liquid level sensor and the second liquid level sensor through the control component.

[0013] Furthermore, a first solenoid valve is provided between the first expansion tank and the water pump, and a second solenoid valve is provided between the second expansion tank and the water pump. The first solenoid valve and the second solenoid valve are connected to the control component.

[0014] This application also provides a vehicle including the above-described vehicle coolant filling system, wherein the vehicle is a low-floor short rear overhang bus or a low-floor zero rear overhang bus.

[0015] This application stores coolant in a low-level reservoir, which can be replenished directly on the ground without needing to climb to a higher position, making replenishment convenient. Simultaneously, when the expansion tank needs coolant replenishment, the water pump can be controlled directly via a button on the instrument panel. The water pump delivers coolant from the low-level reservoir to the expansion tank, making operation simple and coolant filling convenient. Attached Figure Description

[0016] Figure 1 This is a connection diagram of a vehicle coolant filling system according to an exemplary embodiment of this application.

[0017] Figure 2 This is a connection diagram of a vehicle coolant filling system according to another embodiment of this application.

[0018] Figure 3This is a partial structural schematic diagram of the vehicle coolant filling system of this application.

[0019] Explanation of icon numbers

[0020] 10. Cooling system; 11. Radiator; 12. Cooling module; 101. Electric drive module; 1011. Low-temperature radiator; 1012. Electric drive cooling module; 102. Engine module; 1021. High-temperature radiator; 1022. Engine cooling module; 20. Expansion tank; 21. First expansion tank; 22. Second expansion tank; 30. Water pump; 40. Low-level reservoir; 41. Filler port; 50. Coolant piping; 60. Control components; 61. Instrument panel buttons; 62. Vehicle controller; 70. Liquid level sensor; 71. First liquid level sensor; 72. Second liquid level sensor; 80. Instrument panel; 90. Solenoid valve; 91. First solenoid valve; 92. Second solenoid valve. Detailed Implementation

[0021] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0022] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movements between components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.

[0023] See Figure 1 As shown, this application provides a vehicle coolant filling system, including a cooling system 10, an expansion tank 20, a water pump 30, a low-level reservoir 40, coolant piping 50, and a control component 60. The cooling system 10, expansion tank 20, water pump 30, and low-level reservoir 40 are connected via the coolant piping 50. The expansion tank 20 stores coolant and delivers it to the cooling system 10 via the coolant piping 50. The control component 60 is connected to the water pump 30 and is used to turn on the water pump 30 and drive the coolant in the low-level reservoir 40 to be delivered to the expansion tank 20 via the coolant piping 50.

[0024] The cooling system 10 includes a radiator 11 and a heat dissipation module 12. The radiator 11 and the heat dissipation module 12 are connected by a coolant pipeline 50, and an expansion tank 20 is connected to the radiator 11. The radiator 11 and the heat dissipation module 12 work together to improve heat dissipation efficiency. The heat dissipation module 12 includes a circulating water pump (not shown), which is used to deliver coolant from the expansion tank 20 to the cooling system 10 to achieve coolant circulation and ensure thermal balance in the cooling system 10.

[0025] An expansion tank 20 is located on the top of the vehicle, allowing the cooling system 10 to vent naturally. A water pump 30 and a low-level coolant reservoir 40 are located in the rear compartment of the vehicle. The cooling system 10, water pump 30, and low-level coolant reservoir 40 are all located below the expansion tank 20. The water pump 30 connects the expansion tank 20 and the low-level coolant reservoir 40. According to an embodiment of this application, the water pump 30 and the low-level coolant reservoir 40 are arranged at a lower position in the rear compartment of the vehicle. The low-level coolant reservoir 40 includes a filler port 41, allowing maintenance personnel to replenish coolant directly from the filler port 41 while standing on the ground.

[0026] According to the embodiments of this application, the low-level reservoir 40 can be pre-filled with coolant for later use, facilitating the replenishment of coolant to the expansion tank 20 during driving. Alternatively, a level sensor can be added to the low-level reservoir 40 to promptly remind the driver to replenish coolant.

[0027] The control component 60 includes an instrument panel button 61 and a vehicle controller 62. The vehicle controller 62 is connected to both the instrument panel button 61 and the water pump 30. Operating the instrument panel button 61 controls the water pump 30; pressing the instrument panel button 61 turns the water pump 30 on.

[0028] The vehicle coolant filling system also includes a level sensor 70, an instrument panel 80, and a solenoid valve 90. The level sensor 70 is located inside the expansion tank 20 and is used to monitor the coolant level in the expansion tank 20 in real time. The instrument panel 80 is connected to the level sensor 70 via a control component 60. According to an embodiment of this application, the vehicle controller 62 is connected to both the level sensor 70 and the instrument panel 80 to display the real-time coolant level information of the expansion tank 20 on the instrument panel 80, prompting the user for coolant replenishment and preventing the system from overheating.

[0029] A solenoid valve 90 is located between the expansion tank 20 and the water pump 30. The solenoid valve 90 is connected to the vehicle controller 62. When the expansion tank 20 is sufficiently replenished, the vehicle controller 62 controls the solenoid valve 90 to close, preventing the low-level reservoir 40 from replenishing the expansion tank 20 and thus preventing overflow. The solenoid valve 90 can precisely control the start and stop of coolant replenishment, preventing coolant backflow or overfilling. In some embodiments, the solenoid valve 90, in conjunction with the vehicle controller 62, can regulate the flow rate during coolant replenishment to adapt to different operating conditions.

[0030] In some embodiments, the solenoid valve 90 can be replaced with a mechanical check valve that automatically opens and closes depending on the pressure difference. An electric ball valve can also be used to achieve multi-stage flow control.

[0031] The vehicle coolant filling system has two layout schemes for single-energy vehicles and hybrid-energy vehicles. As Figure 1 Shown is the vehicle coolant filling system for a single-energy vehicle. The liquid level sensor 70 continuously monitors the coolant level in the expansion tank 20. The vehicle controller 62 monitors the output signal of the liquid level sensor 70 and displays the liquid level information on the dashboard 80. When the liquid level in the expansion tank 20 is lower than the set threshold, the dashboard 80 will issue a corresponding warning to prompt the driver that the expansion tank 20 lacks coolant. The driver can press the dashboard button 61, and the vehicle controller 62 controls the water pump 30 to start, pumping the coolant in the low-position liquid storage bucket 40 into the expansion tank 20. When the vehicle controller 62 monitors that the liquid level information of the liquid level sensor 70 reaches the upper limit, it controls the water pump 30 to close, completing the coolant filling operation.

[0032] Refer Figure 2 to Figure 3 Shown is the vehicle coolant filling system for a hybrid-energy vehicle. The cooling system 10 includes an electric drive module 101 and an engine module 102. Both the electric drive module 101 and the engine module 102 are arranged on the roof or on the side at a high position. The electric drive module 101 includes a low-temperature radiator 1011 and an electric drive cooling module 1012. The low-temperature radiator 1011 and the electric drive cooling module 1012 are connected by a coolant pipeline 50. A first circulation water pump (not shown) is provided in the electric drive module 101 for pumping the coolant in the expansion tank 20 into the electric drive module 101.

[0033] The engine module 102 includes a high-temperature radiator 1021 and an engine cooling module 1022. The high-temperature radiator 1021 and the engine cooling module 1022 are connected by a coolant pipeline 50. A second circulation water pump (not shown) is provided in the engine module 102 for pumping the coolant in the expansion tank 20 into the engine module 102.

[0034] The split design of the electric drive module 101 and the engine module 102 can avoid the mixing of coolants with different temperature requirements, improving the heat dissipation pertinence. At the same time, the independent coolant pipelines 50 provided in the electric drive module 101 and the engine module 102 can reduce the system complexity and facilitate maintenance.

[0035] The expansion tank 20 includes a first expansion tank 21 and a second expansion tank 22. Both the first expansion tank 21 and the second expansion tank 22 are connected to the water pump 30 and the low-level storage tank 40 via coolant pipelines 50. The water pump 30 delivers the coolant in the low-level storage tank 40 to the first expansion tank 21 and the second expansion tank 22 respectively.

[0036] According to an embodiment of this application, the first expansion tank 21 is connected to the low-temperature radiator 1011 via a coolant pipeline 50 to transport the coolant in the first expansion tank 21 to the low-temperature radiator 1011. The second expansion tank 22 is connected to the high-temperature radiator 1021 via a coolant pipeline 50 to transport the coolant in the second expansion tank 22 to the high-temperature radiator 1021.

[0037] In some implementations, a compartmentalized design can be used inside a single expansion tank, allowing one expansion tank to simultaneously cool both the electric drive module 101 and the engine module 102.

[0038] A first level sensor 71 is installed in the first expansion tank 21, and a second level sensor 72 is installed in the second expansion tank 22. The instrument panel 80 is connected to the first level sensor 71 and the second level sensor 72 via a control assembly 60. The vehicle controller 62 is simultaneously connected to the first level sensor 71, the second level sensor 72, and the instrument panel 80 to display the level information on the instrument panel 80. According to an embodiment of this application, the instrument panel 80 only displays "normal coolant level" and "low coolant level".

[0039] A first solenoid valve 91 is provided between the first expansion tank 21 and the water pump 30, and a second solenoid valve 92 is provided between the second expansion tank 22 and the water pump 30. The first solenoid valve 91 and the second solenoid valve 92 are connected to the vehicle controller 62 circuit.

[0040] The first level sensor 71 monitors the coolant level in the first expansion tank 21 in real time, and the second level sensor 72 monitors the coolant level in the second expansion tank 22 in real time. The vehicle controller 62 monitors the output signals of the first level sensor 71 and the second level sensor 72 and displays the coolant level information on the instrument panel 80. When the coolant level in the first expansion tank 21 or the second expansion tank 22 is lower than a set threshold, the instrument panel 80 will issue a corresponding warning to remind the driver that the first expansion tank 21 or the second expansion tank 22 is low on coolant.

[0041] The driver can press button 61 on the dashboard, and the vehicle controller 62 will control the water pump 30 to start, pumping the coolant in the low-level reservoir 40 into the first expansion tank 21 and the second expansion tank 22. The vehicle controller 62 monitors the liquid level information of the first liquid level sensor 71 and the second liquid level sensor 72. When the liquid level information of the first liquid level sensor 71 or the second liquid level sensor 72 reaches the set threshold, the first solenoid valve 91 or the second solenoid valve 92 will be closed.

[0042] If the liquid level output information of the first liquid level sensor 71 reaches the set threshold, the first solenoid valve 91 is closed, and the water pump 30 continues to replenish the second expansion tank 22. If the liquid level output information of the second liquid level sensor 72 reaches the set threshold, the second solenoid valve 92 is closed, and the water pump 30 continues to replenish the first expansion tank 21. When the liquid level output information of both the first liquid level sensor 71 and the second liquid level sensor 72 reaches the set threshold, the vehicle controller 62 controls the first solenoid valve 91, the second solenoid valve 92, and the water pump 30 to close, completing the coolant filling operation.

[0043] This application also provides a vehicle including the aforementioned vehicle coolant filling system. According to embodiments of this application, the vehicle may be a low-floor, short-rear-overhang bus or a low-floor, zero-rear-overhang bus.

[0044] This application stores coolant in a low-level reservoir 40, which can be replenished directly on the ground without needing to climb to a higher position, making replenishment convenient. Simultaneously, when the expansion tank 20 needs coolant replenishment, the water pump 30 can be controlled directly via the instrument panel button 61. The water pump 30 can transport the coolant from the low-level reservoir 40 to the expansion tank 20, making operation simple and coolant replenishment convenient.

[0045] It should be noted that the technical solutions or features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A vehicle coolant filling system, characterized in that, The system includes a cooling system (10), an expansion tank (20), a water pump (30), a low-level reservoir (40), a coolant pipeline (50), and a control component (60). The cooling system (10), the expansion tank (20), the water pump (30), and the low-level reservoir (40) are connected through the coolant pipeline (50). The expansion tank (20) is located on the top of the vehicle, and the low-level reservoir (40) is located below the expansion tank (20). The control component (60) is connected to the water pump (30) and includes an instrument panel button (61) for controlling the water pump (30).

2. The vehicle coolant filling system according to claim 1, characterized in that, The water pump (30) and the low-level liquid storage tank (40) are located in the rear compartment of the vehicle, and the cooling system (10) is located below the expansion tank (20); the water pump (30) is connected between the expansion tank (20) and the low-level liquid storage tank (40).

3. The vehicle coolant filling system according to claim 1, characterized in that, The control component (60) also includes a vehicle controller (62), which is connected to the dashboard button (61) and the water pump (30) respectively; the expansion tank (20) is equipped with a liquid level sensor (70), and the vehicle coolant filling system also includes an instrument panel (80), which is connected to the liquid level sensor (70) through the control component (60).

4. The vehicle coolant filling system according to claim 1, characterized in that, An electromagnetic valve (90) is provided between the expansion tank (20) and the water pump (30), and the electromagnetic valve (90) is connected to the control component (60).

5. The vehicle coolant filling system according to claim 1, characterized in that, The cooling system (10) includes a radiator (11) and a heat dissipation module (12). The radiator (11) and the heat dissipation module (12) are connected through the coolant pipeline (50). The expansion tank (20) is connected to the radiator (11). The heat dissipation module (12) includes a circulating water pump for transporting the coolant in the expansion tank (20) to the cooling system (10).

6. The vehicle coolant filling system according to claim 1, characterized in that, The expansion tank (20) includes a first expansion tank (21) and a second expansion tank (22), and both the first expansion tank (21) and the second expansion tank (22) are connected to the water pump (30) and the low-level storage tank (40) through the coolant pipeline (50).

7. The vehicle coolant filling system according to claim 6, characterized in that, The cooling system (10) includes an electric drive module (101) and an engine module (102); the electric drive module (101) includes a low-temperature radiator (1011) and an electric drive cooling module (1012) connected through the coolant pipeline (50), and the low-temperature radiator (1011) is connected to the first expansion tank (21); the engine module (102) includes a high-temperature radiator (1021) and an engine cooling module (1022) connected through the coolant pipeline (50), and the high-temperature radiator (1021) is connected to the second expansion tank (22).

8. The vehicle coolant filling system according to claim 6, characterized in that, The first expansion tank (21) is equipped with a first liquid level sensor (71), and the second expansion tank (22) is equipped with a second liquid level sensor (72). The vehicle coolant filling system also includes an instrument panel (80), which is connected to the first liquid level sensor (71) and the second liquid level sensor (72) through the control component (60).

9. The vehicle coolant filling system according to claim 6, characterized in that, A first solenoid valve (91) is provided between the first expansion tank (21) and the water pump (30), and a second solenoid valve (92) is provided between the second expansion tank (22) and the water pump (30). The first solenoid valve (91) and the second solenoid valve (92) are connected to the control component (60).

10. A vehicle, characterized in that, Includes a vehicle coolant filling system as described in any one of claims 1-9, wherein the vehicle is a low-floor short-rear-overhang bus or a low-floor zero-rear-overhang bus.

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