Fuel cell cooling system and vehicle

Abstract

The utility model provides a cooling system and vehicle for a fuel cell. The cooling system for the fuel cell of the utility model has a cooling pipeline connected between a stack and a heat dissipation component; a pipeline connector that can be disconnected is provided on the cooling pipeline, and the pipeline connector separates the cooling pipeline into a stack side branch pipe and a vehicle side branch pipe; both the stack side branch pipe and the vehicle side branch pipe are provided with a control valve component, and when the pipeline connector is disconnected, the control valve component can close the corresponding stack side branch pipe and the vehicle side branch pipe. The cooling system for the fuel cell of the utility model can close the corresponding stack side branch pipe and the vehicle side branch pipe by using a control component when the pipeline connector is disconnected, thereby separating the cooling system into a stack part and a vehicle part, so that when the fuel cell system is replaced, the coolant can be discharged without discharging, avoiding waste and pollution of the coolant, and also facilitating the replacement of the fuel cell system, and also facilitating the replacement time of the entire fuel cell system.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel cell systems, and in particular to a cooling system for a fuel cell. The utility model also relates to a vehicle provided with the cooling system for the fuel cell. Background Art

[0002] Hydrogen vehicles are generally composed of a pure electric chassis, a fuel cell system, and a hydrogen storage system. The fuel cell system can produce pure water through electrochemical reactions when working, but due to technical problems, the fuel cell systems currently used in heavy-duty vehicles frequently fail. With the increase in power and frequency of use, the life of the fuel cell system quickly reaches the end, resulting in the need to replace the fuel cell system for maintenance or replacement during terminal operation.

[0003] When a hydrogen fuel cell system fails or reaches the end of its life and needs to be replaced, the current method is to first discharge the stack coolant, then disassemble and replace the system, and finally refill the coolant. However, due to structural limitations, this method leads to the risk of contamination of the fuel cell-specific coolant, and it cannot be reused, resulting in waste. Utility Model Content

[0004] In view of this, the utility model aims to provide a fuel cell cooling system to solve the problems of coolant waste and pollution caused by replacing fuel cells.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] A cooling system for a fuel cell, the cooling system having a cooling pipeline connected between a fuel cell stack and a heat dissipation component;

[0007] The cooling pipeline is provided with a disconnectable pipeline connector, and the pipeline connector separates the cooling pipeline into a stack side branch pipe and a vehicle side branch pipe;

[0008] The stack side branch pipe and the vehicle side branch pipe are both provided with control valve components. When the pipeline connector is disconnected, the control valve components can close the corresponding stack side branch pipe and the vehicle side branch pipe.

[0009] Furthermore, the cooling pipeline includes a liquid inlet pipeline and a liquid return pipeline connected between the battery stack and the heat dissipation assembly; the liquid inlet pipeline and the liquid return pipeline are both provided with the pipeline connector, the liquid inlet pipeline is divided into a first battery stack side branch pipe and a first vehicle side branch pipe by the corresponding pipeline connector, and the liquid return pipeline is divided into a second battery stack side branch pipe and a second vehicle side branch pipe by the corresponding pipeline connector; the first battery stack side branch pipe, the first vehicle side branch pipe, the second battery stack side branch pipe and the second vehicle side branch pipe are respectively provided with the control valve components.

[0010] Furthermore, the control valve component on the first stack side branch pipe includes a first one-way valve, and the control valve component on the first vehicle side branch pipe includes a switch valve.

[0011] Furthermore, the control valve component on the second fuel cell stack side branch pipe includes a three-way valve, and the control valve component on the second vehicle side branch pipe includes a second one-way valve; the three-way valve is connected to the first fuel cell stack side branch pipe through a bypass line, and the connection point Q between the three-way valve and the first fuel cell stack side branch pipe is located between the first one-way valve and the fuel cell stack.

[0012] Furthermore, a circulation pump is provided on the first fuel cell stack side branch pipe, and the circulation pump is located between the connection point between the three-way valve and the first fuel cell stack side branch pipe and the fuel cell stack.

[0013] Furthermore, the cooling system has a liquid storage tank; the liquid storage tank is connected to the heat dissipation component through a liquid replenishing pipeline.

[0014] Furthermore, an overflow pipeline is provided between the liquid storage tank and the second vehicle side branch pipe.

[0015] Furthermore, a first exhaust pipeline is provided between the first vehicle side branch pipe and the liquid storage tank; and / or a second exhaust pipeline is provided between the second vehicle side branch pipe and the liquid storage tank.

[0016] Furthermore, the pipeline connector includes a quick-connect connector.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] The cooling system of the fuel cell described in the utility model can disconnect the cooling system at the position of the pipe connector and divide it into the stack part and the vehicle part through the pipe connector that can be disconnected arranged on the cooling pipe and the control valve member arranged on the side branch pipe of the stack and the side branch pipe of the whole vehicle. When the pipe connector is disconnected, the corresponding side branch pipe of the stack and the side branch pipe of the whole vehicle can be closed by the control member. Therefore, when the fuel cell system is replaced, the coolant does not need to be discharged, thereby avoiding the waste and pollution of the coolant, and it is also beneficial to replace the fuel cell system, and it is also beneficial to shorten the replacement time of the whole fuel cell system.

[0019] In addition, both the liquid inlet pipeline and the liquid return pipeline are provided with pipeline connectors, and the corresponding pipeline connectors divide the liquid inlet pipeline into a first battery stack side branch pipe and a first whole vehicle side branch pipe, and divide the liquid return pipeline into a second battery stack side branch pipe and a second whole vehicle side branch pipe. At the same time, control valve components are respectively provided on the first battery stack side branch pipe, the first whole vehicle side branch pipe, the second battery stack side branch pipe and the second whole vehicle side branch pipe. In this way, when the pipeline connector is disconnected, the corresponding control valve components can be used between the first battery stack side branch pipe and the first whole vehicle side branch pipe, and between the second battery stack side branch pipe and the second whole vehicle side branch pipe to close each branch pipe, thereby preventing the coolant in each branch pipe from overflowing from the disconnected position of the pipeline connector.

[0020] Secondly, the control valve component on the first battery stack side branch pipe adopts a first one-way valve, and the control valve component on the first vehicle side branch pipe adopts a switch valve. The one-way conduction function of the one-way valve and the closing of the switch valve can ensure the closing effect of the first battery stack side branch pipe and the first vehicle side branch pipe, and the structure is simple and the technology is mature.

[0021] The control valve component on the second stack side branch pipe adopts a three-way valve, and the control valve component on the second vehicle side branch pipe adopts a second one-way valve. The one-way conduction of the one-way valve and the selective opening of the three-way valve interface can ensure the closing effect of the second stack side branch pipe and the second vehicle side branch pipe. At the same time, the three-way valve is connected to the stack side branch pipe through a bypass line, and the connection point between the three-way valve and the first stack side branch pipe is arranged between the first one-way valve and the stack. In this way, the first stack side branch pipe, the bypass line, the second stack side branch pipe and the stack form a loop, which is beneficial for the coolant to be cut off inside the stack.

[0022] Furthermore, a circulation pump is provided on the first battery stack side branch pipe, and the circulation pump is located between the connection point between the three-way valve and the first battery stack side branch pipe and the battery stack, which is conducive to the circulation of the coolant blocked inside the battery stack. The provision of the liquid storage tank and the liquid replenishment pipeline is conducive to the replenishment of the coolant in the liquid storage tank to the heat dissipation component through the liquid replenishment pipeline, that is, it is conducive to the replenishment of the coolant circuit composed of the liquid inlet pipeline and the liquid return pipeline. The overflow pipeline provided between the liquid storage tank and the second vehicle side branch pipe is conducive to pressure relief through the overflow pipeline when the pressure of the cooling system is too high, so as to ensure the normal operation of the cooling system.

[0023] In addition, the setting of the first exhaust pipeline is conducive to the discharge of bubbles in the first vehicle side branch pipe, that is, it is conducive to the discharge of bubbles in the liquid inlet pipeline. The setting of the second exhaust pipeline is conducive to the discharge of bubbles in the second vehicle side branch pipe, that is, it is conducive to the discharge of bubbles in the liquid return pipeline. The pipeline connector adopts a quick-connect connector, which is conducive to the rapid connection and disconnection between the battery stack side branch pipe and the vehicle side branch pipe, thereby facilitating the replacement of the fuel cell system, thereby shortening the replacement time of the fuel cell system.

[0024] Another object of the present invention is to provide a vehicle, wherein the vehicle is provided with the cooling system of the fuel cell as described above.

[0025] The vehicle of the utility model, by adopting the above-mentioned fuel cell cooling system, can disconnect the cooling system at the position of the pipe connector and divide it into the fuel cell stack part and the whole vehicle part. Therefore, when the fuel cell system is replaced, the coolant does not need to be discharged, thereby avoiding the waste and pollution of the coolant, and is also beneficial to the replacement of the fuel cell system, and also helps to shorten the replacement time of the whole fuel cell system. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0027] Figure 1 This is a schematic structural diagram of a fuel cell cooling system according to an embodiment of the utility model;

[0028] Description of reference numerals:

[0029] 1. Battery stack; 2. Heat dissipation component; 3. Circulation pump; 4. Quick-connect connector; 5. First one-way valve; 6. Second one-way valve; 7. Three-way valve; 8. Switch valve; 9. Liquid storage tank;

[0030] 10. First fuel cell stack side branch pipe; 20. Second fuel cell stack side branch pipe; 30. Second vehicle side branch pipe; 40. First vehicle side branch pipe; 50. Bypass pipe; 60. Fluid replenishment pipe; 70. Overflow pipe; 80. First exhaust pipe; 90. Second exhaust pipe; 11. First interface; 22. Second interface; 33. Third interface; Q, connection point. DETAILED DESCRIPTION

[0031] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0032] In the description of the present invention, it should be noted that if there are terms such as "upper", "lower", "inner", "outer" and the like indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 cannot be understood as limiting the present invention. In addition, if there are terms such as "first" and "second", they are also used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0033] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection" and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0034] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0035] Embodiment 1

[0036] This embodiment relates to a cooling system for a fuel cell, which can solve the problems of coolant waste and pollution caused by replacing a fuel cell.

[0037] In terms of overall structure, the cooling system of the fuel cell of this embodiment is as follows: Figure 1As shown, the cooling system has a cooling pipeline connected between the battery stack 1 and the heat dissipation component 2. Among them, a disconnectable pipeline connector is provided on the cooling pipeline, and the pipeline connector separates the cooling pipeline into a battery stack side branch pipe and a vehicle side branch pipe. In addition, control valve components are provided on the battery stack side branch pipe and the vehicle side branch pipe. When the pipeline connector is disconnected, the control valve component can close the corresponding battery stack side branch pipe and the vehicle side branch pipe. The heat dissipation component 2, as a component of the cooling system, can dissipate the heat of the high-temperature coolant in the cooling system. The battery stack side branch pipe refers to the branch pipe to be used on the side of the battery stack installation position in the vehicle, and the vehicle side branch pipe refers to the branch pipe to be used on other sides of the vehicle other than the battery stack installation position.

[0038] At this time, the setting of the pipe connector and the control valve component can make the cooling system disconnect at the position of the pipe connector and be divided into the battery stack part and the whole vehicle part. When the pipe connector is disconnected, the control valve component can be used to close the corresponding battery stack side branch pipe and the whole vehicle side branch pipe. Therefore, when the fuel cell system is replaced, the coolant does not need to be discharged, avoiding coolant waste and pollution, and also facilitating the replacement of the fuel cell system, and also helping to shorten the replacement time of the entire fuel cell system.

[0039] Based on the above overall structure, in detail, as a preferred implementation, in this embodiment, continue to refer to Figure 1 As shown, the cooling pipeline includes a liquid inlet pipeline and a liquid return pipeline connected between the battery stack 1 and the heat dissipation component 2, and pipeline connectors are provided on the liquid inlet pipeline and the liquid return pipeline. Among them, the liquid inlet pipeline is divided into a first battery stack side branch pipe 10 and a first vehicle side branch pipe 40 by corresponding pipeline connectors, and the liquid return pipeline is divided into a second battery stack side branch pipe 20 and a second vehicle side branch pipe 30 by corresponding pipeline connectors. In addition, control valve components are respectively provided on the first battery stack side branch pipe 10, the first vehicle side branch pipe 40, and the second battery stack side branch pipe 20 and the second vehicle side branch pipe 30.

[0040] To facilitate a better understanding of this solution, in this embodiment, the pipeline connector provided on the liquid inlet pipeline is defined as a first pipeline connector, and the pipeline connector provided on the liquid return pipeline is defined as a second pipeline connector. The liquid inlet pipeline and the liquid return pipeline connected between the battery stack 1 and the heat dissipation component 2 form a coolant circuit together with the battery stack 1 and the heat dissipation component 2. In addition, the first battery stack side branch pipe 10 and the first vehicle side branch pipe 40 are connected or disconnected by the first pipeline connector, and the second battery stack side branch pipe 20 and the second vehicle side branch pipe 30 are connected or disconnected by the second pipeline connector.

[0041] At this time, the first pipeline connector and the second pipeline connector respectively arranged on the liquid inlet pipeline and the liquid return pipeline can utilize corresponding control valve components to close each branch pipe between the first battery stack side branch pipe 10 and the first vehicle side branch pipe 40, and between the second battery stack side branch pipe 20 and the second vehicle side branch pipe 30 when the first pipeline connector and the second pipeline connector are disconnected. In this way, the coolant in each branch pipe can be prevented from overflowing from the disconnected position of the pipeline connector, thereby reducing the overflow waste of coolant.

[0042] Moreover, since the price of fuel cell-specific coolant is relatively high, when the fuel cell system is replaced by the traditional method, the coolant needs to be replaced, which will increase the maintenance cost. In the present application, when the first pipeline connector and the second pipeline connector are disconnected, the corresponding control valve is used to close each branch pipe, thereby realizing the liquid replacement of the fuel cell system, thereby reducing the maintenance cost caused by the coolant replacement in the traditional method, and also reducing the after-sales maintenance man-hours and maintenance man-hour fees caused by the discharge and refilling of the coolant.

[0043] As a preferred implementation, in this embodiment, still refer to Figure 1 As shown, the control valve component on the first stack side branch pipe 10 includes a first one-way valve 5, and the control valve component on the first vehicle side branch pipe 40 includes a switch valve 8. In this arrangement, the one-way conduction function of the one-way valve and the closing of the switch valve 8 can be utilized to ensure the closing effect of the first stack side branch pipe 10 and the second vehicle branch pipe, and the structure is simple and easy to design and implement.

[0044] As a further preferred embodiment, in this embodiment, the control valve component on the second battery stack side branch pipe 20 includes a three-way valve 7, and the control valve component on the second vehicle side branch pipe 30 includes a second one-way valve 6. Among them, the three-way valve 7 is connected to the first battery stack side branch pipe 10 through the bypass line 50, and the connection point Q between the three-way valve 7 and the first battery stack side branch pipe 10 is located between the first one-way valve 5 and the battery stack 1. In specific implementation, the first interface 11 and the second interface 22 of the three-way valve 7 are connected in series to the second battery stack side branch pipe 20, and the third interface 33 of the three-way valve 7 is connected to one end of the bypass line 50. The connection point between the three-way valve 7 and the first battery stack side branch pipe 10, that is, the connection point Q between the bypass line 50 and the first battery stack side branch pipe 10 is located between the first one-way valve 5 and the battery stack 1.

[0045] At this time, the control valve component on the second stack side branch pipe 20 adopts a three-way valve 7, and the control valve component on the second vehicle side branch pipe 30 adopts a second one-way valve 6. The one-way conduction of the one-way valve and the selective opening of the interface of the three-way valve 7 can ensure the closing effect of the second stack side branch pipe 20 and the second vehicle side branch pipe 30. At the same time, the three-way valve 7 is connected to the stack side branch pipe through the bypass line 50, and the connection point Q between the three-way valve 7 and the first stack side branch pipe 10 is arranged between the first one-way valve 5 and the stack 1, so that the first stack side branch pipe 10, the bypass line 50, the second stack side branch pipe 20 and the stack 1 form a loop, which is beneficial for the coolant to be cut off inside the stack 1.

[0046] In this embodiment, a circulation pump 3 is also provided on the first stack side branch pipe 10, and the circulation pump 3 is located between the connection point between the three-way valve 7 and the first stack side branch pipe 10 and the stack 1, specifically, between the connection point Q between the bypass line 50 and the first stack side branch pipe 10 and the stack 1. The provision of the circulation pump 3 is conducive to the circulation of the coolant in the cooling circuit, and is also conducive to the circulation of the coolant blocked inside the stack 1 between the first stack branch pipe 10, the stack 1, the second stack branch pipe 20 and the bypass line 50.

[0047] On the basis of setting the inlet and return lines, the first and second line connectors, and the control valves on each branch pipe, the cooling system of this embodiment also has a liquid storage tank 9, which is connected to the heat dissipation component 2 through a liquid replenishment line 60. Among them, the liquid storage tank 9 is used to store coolant. Through the setting of the liquid storage tank 9 and the liquid replenishment line 60, when the pressure of the cooling system is too low, it is beneficial for the coolant in the liquid storage tank 9 to replenish the heat dissipation component 2 through the liquid replenishment line 60, that is, it is beneficial to replenish the coolant in the liquid storage tank 9 to the heat dissipation component 2 through the liquid replenishment line 60, that is, it is beneficial to replenish the coolant circuit composed of the inlet and return lines. In addition, in this embodiment, an overflow line 70 is also provided between the liquid storage tank 9 and the second vehicle side branch pipe 30. The setting of the overflow line 70 is beneficial to relieve the pressure through the overflow line 70 when the pressure of the cooling system is too high, so as to ensure that the cooling system is in normal operation.

[0048] In addition, since the fuel cell system needs to be discharged after the coolant is replaced and filled, if the bubbles are not discharged sufficiently, it will cause problems such as the stack over-temperature alarm light. To this end, in this embodiment, as a preferred implementation, a first exhaust pipeline 80 is provided between the first vehicle side branch pipe 40 and the liquid storage tank 9, and a second exhaust pipeline 90 is also provided between the second vehicle side branch pipe 30 and the liquid storage tank 9. The setting of the first exhaust pipeline 80 is conducive to the discharge of bubbles in the first vehicle side branch pipe 40, that is, it is conducive to the discharge of bubbles in the liquid inlet pipeline. The setting of the second exhaust pipeline 90 is conducive to the discharge of bubbles in the second vehicle side branch pipe 30, that is, it is conducive to the discharge of bubbles in the liquid return pipeline. Moreover, the combination of the first exhaust pipeline 80 and the second exhaust pipeline 90 can further facilitate the discharge of bubbles in the entire cooling system.

[0049] It is worth mentioning here that in the present embodiment, in addition to setting up the first exhaust pipeline 80 and the second exhaust pipeline 90, it is also possible to set up the first exhaust pipeline 80 only between the first vehicle side branch pipe 40 and the liquid storage tank 9, or to set up the second exhaust pipeline 90 only between the second vehicle side branch pipe 30 and the liquid storage tank 9. This is also possible.

[0050] In addition, the pipe connector of this embodiment, as a preferred implementation, preferably adopts a quick-plug connector 4. That is, the first pipe connector and the second pipe connector preferably adopt a quick-plug connector 4, which is conducive to the rapid connection and disconnection between the stack side branch pipe and the vehicle side branch pipe, thereby facilitating the replacement of the fuel cell system, thereby shortening the replacement time of the fuel cell system.

[0051] It is worth noting that, in addition to the quick-connect connector 4, the pipeline connector of this embodiment may also be a pipe connector, which is also possible.

[0052] The cooling system of the fuel cell of this embodiment makes the first interface 11 and the second interface 22, as well as the third interface 33 and the second interface 22 of the three-way valve 7 disconnected when disassembling a faulty fuel cell system or replacing a fuel cell system whose life has ended. At this time, the coolant circulates between the first battery stack side branch pipe 10, the battery stack 1, the second battery stack side branch pipe 20 and the bypass pipeline 50. Then manually close the switch valve 8, and then disconnect the first pipeline connector and the second pipeline connector, separate the battery stack part and the vehicle part, and dismantle the fuel cell system. In this way, in the process of dismantling the fuel cell system, the coolant does not need to be discharged, avoiding waste and pollution of the coolant, and also facilitating the replacement of the fuel cell system.

[0053] When installing a new fuel cell system or reinstalling a fuel cell system after repair, the first pipeline connector and the second pipeline connector are plugged and connected, and then the switch valve 8 is opened. At this time, the coolant in the system quickly fills the pipeline between the switch valve 8 and the first one-way valve 5 under the action of gravity, and the bubbles inside the pipeline are discharged into the liquid storage tank 9 through the first exhaust pipeline 80 under the action of buoyancy. Then start the fuel cell system. When the water temperature reaches a certain temperature, the first interface 11 and the second interface 22 of the three-way valve 7 are connected, and the first interface 11 and the third interface 33 and the second interface 22 and the third interface 33 are not connected. At this time, the coolant at the outlet of the stack 1 will fill the pipeline between the three-way valve 7 and the second one-way valve 6, and the bubbles in the pipeline are discharged into the liquid storage tank 9 through the second exhaust pipeline 90. In this way, the liquid replacement of the fuel cell system on the whole vehicle is completed.

[0054] In addition, it should be noted that the new fuel cell system is filled with coolant. It should also be noted that the heat dissipation assembly 2 in this embodiment includes a radiator for the coolant to circulate, and a heat dissipation fan arranged on the side of the radiator.

[0055] The cooling system of the fuel cell of this embodiment can avoid discharging coolant when the fuel cell system is replaced, thereby avoiding coolant waste and pollution, and is also conducive to the rapid replacement of the fuel cell system, while also helping to shorten the replacement time of the entire fuel cell system, and has a very good use effect.

[0056] Embodiment 2

[0057] This embodiment relates to a vehicle, in which the cooling system of the fuel cell of the first embodiment is provided.

[0058] The vehicle of this embodiment, by adopting the cooling system of the fuel cell of Embodiment 1, can disconnect the cooling system at the position of the pipe connector and divide it into the fuel cell stack part and the vehicle part. Therefore, when the fuel cell system is replaced, the coolant does not need to be discharged, thereby avoiding the waste and pollution of the coolant, and also facilitating the replacement of the fuel cell system and shortening the replacement time of the entire fuel cell system.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cooling system for a fuel cell, characterized in that: The cooling system comprises a cooling pipeline connected between the battery stack (1) and the heat dissipation component (2); The cooling pipeline is provided with a disconnectable pipeline connector, and the pipeline connector separates the cooling pipeline into a stack side branch pipe and a vehicle side branch pipe; The stack side branch pipe and the vehicle side branch pipe are both provided with control valve components. When the pipeline connector is disconnected, the control valve components can close the corresponding stack side branch pipe and the vehicle side branch pipe.

2. The fuel cell cooling system according to claim 1, characterized in that: The cooling pipeline comprises a liquid inlet pipeline and a liquid return pipeline connected between the battery stack (1) and the heat dissipation component (2); The liquid inlet pipeline and the liquid return pipeline are both provided with the pipeline connectors, the liquid inlet pipeline is divided into a first battery stack side branch pipe (10) and a first vehicle side branch pipe (40) by the corresponding pipeline connectors, and the liquid return pipeline is divided into a second battery stack side branch pipe (20) and a second vehicle side branch pipe (30) by the corresponding pipeline connectors; The control valve components are respectively provided on the first battery stack side branch pipe (10), the first vehicle side branch pipe (40), the second battery stack side branch pipe (20) and the second vehicle side branch pipe (30).

3. The cooling system for a fuel cell according to claim 2, characterized in that: The control valve component on the first stack side branch pipe (10) includes a first one-way valve (5), and the control valve component on the first vehicle side branch pipe (40) includes a switch valve (8).

4. The fuel cell cooling system according to claim 3, characterized in that: The control valve component on the second stack side branch pipe (20) comprises a three-way valve (7), and the control valve component on the second vehicle side branch pipe (30) comprises a second one-way valve (6); The three-way valve (7) is connected to the first fuel cell stack side branch pipe (10) via a bypass line (50), and a connection point (Q) between the three-way valve (7) and the first fuel cell stack side branch pipe (10) is located between the first one-way valve (5) and the fuel cell stack (1).

5. The fuel cell cooling system according to claim 4, characterized in that: A circulation pump (3) is provided on the first fuel cell stack side branch pipe (10), and the circulation pump (3) is located between a connection point (Q) between the three-way valve (7) and the first fuel cell stack side branch pipe (10) and the fuel cell stack (1).

6. The cooling system for a fuel cell according to claim 2, characterized in that: The cooling system comprises a liquid storage tank (9); The liquid storage tank (9) is connected to the heat dissipation component (2) via a liquid replenishment pipeline (60).

7. The fuel cell cooling system according to claim 6, characterized in that: An overflow pipeline (70) is provided between the liquid storage tank (9) and the second vehicle side branch pipe (30).

8. The fuel cell cooling system according to claim 6, characterized in that: A first exhaust pipeline (80) is provided between the first vehicle side branch pipe (40) and the liquid storage tank (9); and / or a second exhaust pipeline (90) is provided between the second vehicle side branch pipe (30) and the liquid storage tank (9).

9. The cooling system for a fuel cell according to any one of claims 1 to 8, characterized in that: The pipeline connector comprises a quick-connect connector (4).

10. A vehicle, characterized in that: The vehicle is provided with a cooling system for the fuel cell according to any one of claims 1 to 9.

Images