Liquid adding and discharging device for fuel cell automobile

Abstract

The utility model relates to a liquid adding and discharging device for a fuel cell automobile. The liquid adding and discharging device comprises a box body, a partition plate and a liquid storage box, the partition plate is vertically installed in the box body and used for dividing the box body into two independent cavities, and a liquid discharging pipe is installed in the middle of the partition plate and used for communicating the two cavities. According to the liquid adding and discharging device for the fuel cell vehicle, through operation of the air pump, air pressure can be inflated into the left side cavity in the liquid adding process, so that cooling liquid is extruded and fed into a water path system of the fuel cell vehicle through the liquid discharging pipe and the connecting pipe, and meanwhile air is prevented from entering the water path system from the connecting pipe; according to the device, the cooling liquid in the water path system is guaranteed to be pure and effectively run, in addition, the device can add the cooling liquid into the water path system, negative pressure can be formed by operating the air pump, the cooling liquid is extracted from the water path system, the dual functions of liquid adding and liquid discharging are achieved, and the practicability and flexibility of the device are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy vehicles, in particular to a liquid filling and draining device for fuel cell vehicles. Background Art

[0002] Coolant can effectively absorb and remove excess heat generated by the engine during operation, ensuring that the engine operates within an appropriate temperature range. Once the coolant is insufficient, the engine temperature will rise, which may cause damage to the internal parts of the engine.

[0003] Currently, the process of adding automotive coolant generally relies on manual methods, that is, the coolant is directly injected into the expansion tank. Then, with the help of the water pump circulation mechanism built into the automotive water system, the coolant gradually pushes and expel the air in the system. Although this manual liquid addition method can be effective in water systems with simple structures, it is difficult to completely eliminate the internal air for more complex water systems. What is more serious is that if the water pump in the automotive water system runs for a long time in a state containing a large amount of air, its performance will be damaged, and even cause water pump failure. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present invention provides a liquid filling and draining device for a fuel cell vehicle, which solves the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present utility model provides the following technical solutions: a liquid filling and draining device for a fuel cell vehicle, comprising a box body, a partition plate and a liquid storage tank;

[0006] The partition plate is vertically installed inside the box body to separate the box body into two independent cavities. A drainage pipe is installed in the middle of the partition plate to connect the two cavities.

[0007] The liquid storage tank is installed on the outside of the box body, and the interior of the liquid storage tank is filled with coolant. A water pump is installed on the outside of the box body, and the output end of the water pump is connected to the liquid storage tank. The output end of the water pump is connected to the cavity on the left side of the box body, so as to extract the coolant from the liquid storage tank and transport it to the interior of the left cavity;

[0008] An air pump is provided on the upper surface of the box body, and the output end of the air pump is connected to an air pipe having one end passing through and extending into the left cavity. A connecting pipe connected to the right cavity is installed on the right side of the inner wall of the box body.

[0009] Furthermore, one end of the connecting pipe away from the box body is connected to the water system on the fuel cell vehicle.

[0010] Furthermore, the cross-section of the front side of the drain pipe is L-shaped.

[0011] Furthermore, a distance of no more than five centimeters is maintained between the drainage pipe and the inner bottom wall of the left cavity.

[0012] Furthermore, a positioning ring is installed on the left side of the partition plate and is sleeved on the outside of the drainage pipe.

[0013] Furthermore, a liquid injection pipe is provided on the upper end surface of the liquid storage tank for replenishing the coolant inside the liquid storage tank.

[0014] Furthermore, a one-way exhaust valve communicating with the cavity on the right side is provided on the upper end surface of the box body for discharging the air inside the cavity on the right side.

[0015] Compared with the existing technology, the technical solution of this application has the following beneficial effects:

[0016] This filling and draining device for fuel cell vehicles is operated by an air pump. During the filling process, air pressure can be injected into the left cavity, thereby squeezing the coolant and sending it into the water system of the fuel cell vehicle through the drain pipe and the connecting pipe. At the same time, air is prevented from entering the water system through the connecting pipe, ensuring the purity and effective operation of the coolant in the water system. In addition, the device can not only add coolant to the water system, but also form negative pressure by operating the air pump to extract coolant from the water system, realizing the dual functions of filling and draining, and improving the practicality and flexibility of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0019] Figure 3 This is a front view structural diagram of the utility model.

[0020] In the figure: 1. Box body; 2. Partition plate; 3. Liquid storage tank; 4. Drain pipe; 5. Coolant; 501. Water pump; 6. Air pump; 7. Air pipe; 8. Connecting pipe; 9. One-way exhaust valve. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-3 In this embodiment, a liquid filling and draining device for a fuel cell vehicle is used to remove air input into the water system;

[0023] Specifically, it includes a box body 1, a partition plate 2 and a liquid storage tank 3; the partition plate 2 is vertically installed inside the box body 1 to separate the box body 1 into two independent cavities, and a drain pipe 4 is installed in the middle of the partition plate 2 to connect the two cavities;

[0024] The liquid storage tank 3 is installed on the outside of the box body 1, and the coolant 5 is filled inside the liquid storage tank 3. A water pump 501 is installed on the outside of the box body 1, and the output end of the water pump 501 is connected to the liquid storage tank 3. The output end of the water pump 501 is connected to the cavity on the left side of the inside of the box body 1, so as to extract the coolant 5 inside the liquid storage tank 3 and transport it to the inside of the left cavity; an air pump 6 is provided on the upper surface of the box body 1, and the output end of the air pump 6 is connected to an air pipe 7 with one end passing through and extending to the inside of the left cavity, and a connecting pipe 8 connected to the right cavity is installed on the right side of the inner wall of the box body 1.

[0025] During actual use, the coolant 5 is added to the interior of the liquid storage tank 3 for storage, and the coolant 5 in the liquid storage tank 3 is transported to the interior of the left cavity through the operation of the water pump 501. Then, the control switch of the air pump 6 is turned on, and the interior of the left cavity is filled with air pressure through the operation of the air pump 6, thereby squeezing the coolant 5 inside the left cavity, so that the coolant 5 in the left cavity is transported to the interior of the right cavity through the drain pipe 4, and the coolant 5 is transported to the water system on the fuel cell vehicle through the connecting pipe 8 connected to the right cavity.

[0026] It should be noted that in order to ensure that the coolant 5 in the right cavity can be transported to the water system on the fuel cell vehicle, the end of the connecting pipe 8 in this embodiment away from the box body 1 is connected to the water system on the fuel cell vehicle, that is, when the coolant 5 in the left cavity is completely squeezed into the right cavity, the atmospheric pressure of the left cavity is transported to the inside of the right cavity through the drain pipe 4, thereby squeezing the coolant 5 in the right cavity, so that the coolant 5 can be transported along the connecting pipe 8 to the water system on the fuel cell.

[0027] In addition, the coolant 5 on the right side covers the input end of the connecting pipe 8, thereby effectively preventing air from entering the water system from the input end of the connecting pipe 8.

[0028] In further detail, when the coolant 5 in the water system needs to be extracted, the air pump 6 is controlled to operate, and the air in the left cavity is extracted, so that the left cavity is in a negative pressure state, and then the air in the right cavity is extracted through the drain pipe 4, so that the right cavity is also in a negative pressure state. At this time, the coolant 5 in the water system can be sucked out through the connecting pipe 8.

[0029] At the same time, when the surface of the coolant 5 in the right cavity exceeds the top of the drain pipe 4, it will be transported to the inside of the left cavity through the drain pipe 4.

[0030] In actual settings, in order to ensure that the drain pipe 4 can effectively transport the coolant 5 in the left cavity to the inside of the right cavity, the front cross-section of the drain pipe 4 in this embodiment is L-shaped, and a distance of no more than five centimeters is retained between the drain pipe 4 and the inner bottom wall of the left cavity.

[0031] During actual use, when the coolant 5 in the left cavity is pressurized, it flows upward from the bottom end of the drain pipe 4 and is discharged from the top end of the drain pipe 4 .

[0032] In addition, in order to ensure the stability of the installation of the drain pipe 4, a positioning ring is installed on the left side of the partition plate 2 in this embodiment and is sleeved on the outside of the drain pipe 4.

[0033] Furthermore, in order to facilitate the replenishment of the coolant 5 in the liquid storage tank 3 , a liquid injection pipe is provided on the upper end surface of the liquid storage tank 3 in this embodiment for replenishing the coolant 5 inside the liquid storage tank 3 .

[0034] During actual use, the coolant 5 is injected into the liquid storage tank 3 through the liquid injection pipe by opening the liquid injection pipe, thereby storing the coolant 5 so as to facilitate subsequent replenishment of the coolant 5 in the water system.

[0035] In addition, in order to facilitate the discharge of air in the right cavity, a one-way exhaust valve 9 communicating with the right cavity is provided on the upper end surface of the box body 1 in this embodiment for discharging the air inside the right cavity.

[0036] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A liquid filling and draining device for a fuel cell vehicle, characterized by: It comprises a box body (1), a partition plate (2) and a liquid storage box (3); The partition plate (2) is vertically installed inside the box body (1) to separate the box body (1) into two independent cavities, and a drainage pipe (4) is installed in the middle of the partition plate (2) to connect the two cavities; The liquid storage tank (3) is installed on the outside of the box body (1), and the interior of the liquid storage tank (3) is filled with cooling liquid (5). A water pump (501) is installed on the outside of the box body (1), and the output end of the water pump (501) is connected to the liquid storage tank (3). The output end of the water pump (501) is connected to the cavity on the left side of the interior of the box body (1) for extracting the cooling liquid (5) in the liquid storage tank (3) and delivering it to the interior of the left cavity; An air pump (6) is provided on the upper surface of the box (1), and an output end of the air pump (6) is connected to an air pipe (7) having one end penetrating and extending into the interior of the left cavity. A connecting pipe (8) communicating with the right cavity is installed on the right side of the inner wall of the box (1).

2. A liquid filling and draining device for a fuel cell vehicle according to claim 1, characterized in that: One end of the connecting pipe (8) away from the box (1) is in communication with the water system on the fuel cell vehicle.

3. The liquid filling and draining device for a fuel cell vehicle according to claim 1, characterized in that: The cross section of the front side of the drainage pipe (4) is in an L-shape.

4. The liquid filling and draining device for a fuel cell vehicle according to claim 1, characterized in that: A distance of no more than five centimeters is retained between the drainage pipe (4) and the inner bottom wall of the left cavity.

5. The liquid filling and draining device for a fuel cell vehicle according to claim 4, characterized in that: A positioning ring is installed on the left side of the partition plate (2) and is sleeved on the outside of the drainage pipe (4).

6. The liquid filling and draining device for a fuel cell vehicle according to claim 1, characterized in that: The upper end surface of the liquid storage tank (3) is provided with a liquid injection pipe for replenishing the cooling liquid (5) inside the liquid storage tank (3).

7. The liquid filling and draining device for a fuel cell vehicle according to claim 1, characterized in that: A one-way exhaust valve (9) communicating with the cavity on the right side is provided on the upper end surface of the box body (1) for discharging the air inside the cavity on the right side.

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