Integrated heat dissipation system for testing fuel cell system

Abstract

The utility model discloses an integrated radiating system for testing a fuel cell system, which comprises a first radiator (1) and a second radiator (2), and the first radiator (1) is respectively communicated with a first radiating inlet pipeline (3) and a first radiating outlet pipeline (4). The first radiator (2) is communicated with a first radiating inlet pipeline (3), the second radiator (2) is communicated with a second radiating inlet pipeline (5) and a second radiating outlet pipeline (6), the first radiating inlet pipeline (3) is connected with a shell layer of the first plate heat exchanger (7) through a pipeline with a first control valve (24), and the second radiating inlet pipeline (3) is connected with a shell layer of the second plate heat exchanger (8) through a pipeline with a second control valve (24). The first heat dissipation outlet pipeline (4) is also connected with a shell layer of the first plate heat exchanger (7) through a pipeline, and an inner cavity of a pipe layer of the first plate heat exchanger (7) is connected with a waste heat recycling terminal (11) through a first heat supply outlet pipeline (9) and a first heat supply water return pipeline (10).

Description

Technical Field

[0001] The utility model relates to the field of fuel cells, in particular to an integrated heat dissipation system for fuel cell system testing. Background Art

[0002] A hydrogen fuel cell system is a device that converts the chemical energy in hydrogen fuel into electrical energy. When the hydrogen fuel cell system is in operation, it generates heat, which causes the temperature of the fuel cell to rise. The temperature increase will have an adverse effect on the electrode materials and reaction efficiency of the fuel cell system. Therefore, coolant is needed to remove the heat and cool it through a radiator.

[0003] Different fuel cell systems have different powers and heat outputs, and require different radiator powers. Especially during the offline testing of fuel cell systems, in order to meet the needs of fuel cell systems with different powers, it is necessary to match multiple radiators of different sizes, or prepare multiple high-power radiators to cover different power requirements. In the above two methods, the former requires switching of heat exchanger racks when testing fuel cell systems with different powers, which reduces work efficiency, and requires multiple radiators for different powers, resulting in a waste of resources; while the latter uses high-power radiators to cover multiple powers, resulting in a large difference between the radiator during testing and the actual application radiator, and cannot achieve the test purpose of verifying the thermal management strategy.

[0004] Therefore, a method or device that can solve the above problems is needed. Summary of the Invention

[0005] In order to solve the above-mentioned deficiencies in the prior art, the utility model proposes an integrated cooling system with a simple structure and ingenious design. By connecting and controlling different pipelines, two low-power fuel radiators can be switched in series or in parallel to cover different power cooling requirements. At the same time, this cooling system also has the function of waste heat recovery and utilization.

[0006] The technical solution of the utility model is: an integrated heat dissipation system for fuel cell system testing, characterized in that: the integrated heat dissipation system includes a first radiator 1 and a second radiator 2,

[0007] The first radiator 1 is connected to the first heat dissipation inlet pipe 3 and the first heat dissipation outlet pipe 4 respectively, and the second radiator 2 is connected to the second heat dissipation inlet pipe 5 and the second heat dissipation outlet pipe 6 respectively.

[0008] The integrated heat dissipation system further includes a first plate heat exchanger 7 and a second plate heat exchanger 8. The first heat dissipation inlet pipe 3 is connected to the shell of the first plate heat exchanger 7 via a pipe with a first control valve 24. The first heat dissipation outlet pipe 4 is also connected to the shell of the first plate heat exchanger 7 via a pipe. The inner cavity of the pipe layer of the first plate heat exchanger 7 is connected to the waste heat recovery terminal 11 via the first heat supply outlet pipe 9 and the first heat supply return pipe 10.

[0009] The second heat dissipation inlet pipe 5 is connected to the shell of the second plate heat exchanger 8 through a pipe with a second control valve 12. The second heat dissipation outlet pipe 6 is also connected to the shell of the second plate heat exchanger 8 through a pipe. The inner cavity of the pipe layer of the second plate heat exchanger 8 is connected to the waste heat recovery terminal 11 through the second heat supply outlet pipe 13 and the second heat supply return pipe 14.

[0010] The first heat dissipation inlet pipe 3 and the second heat dissipation outlet pipe 6 are connected via a first regulating pipe 15. A first regulating valve 16 and a second regulating valve 17 are respectively provided at the connection between the first regulating pipe 15, the first heat dissipation inlet pipe 3 and the second heat dissipation outlet pipe 6.

[0011] A second regulating pipeline 18 is connected between the first regulating pipeline 15 and the second heat dissipation inlet pipeline 5. A third regulating valve 19 is provided at the connection between the second regulating pipeline 18 and the second heat dissipation inlet pipeline 5.

[0012] A control pipeline 20 is connected between the first heat dissipation outlet pipeline 4 and the second heat dissipation outlet pipeline 6. An outlet communication control valve 21 is provided on the control pipeline 20.

[0013] At the ends of the first heat dissipation outlet pipeline 4 and the second heat dissipation outlet pipeline 6, a first outlet control valve 22 and a second outlet control valve 23 are respectively provided.

[0014] A plate heat exchanger control pipeline 25 is provided between the first heating return pipeline 10 and the second heating outlet pipeline 13, and a first flow control valve 26 and a second flow control valve 27 are respectively provided at the connection between the plate heat exchanger control pipeline 25 and the first heating return pipeline 10 and the second heating outlet pipeline 13.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] This integrated cooling system for fuel cell system testing features a simple structure, ingenious design, and rational layout. It addresses the challenges of traditional cooling systems by employing a unique design. It can function as two independent low-power radiators or, by controlling and switching the pipelines, create a high-power state where the two radiators are connected in series, thereby meeting varying cooling power requirements. Furthermore, it utilizes a heat exchanger to recover waste heat and supply it to locations requiring heating, further achieving energy conservation and emission reduction. Its multi-power switching requires only controlling the series-parallel connection between the individual pipelines, significantly reducing workload and improving efficiency compared to traditional methods. Furthermore, this integrated cooling system boasts a simple manufacturing process and low manufacturing costs, offering numerous advantages and particularly suitable for widespread application in this field, with a promising market outlook. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a system composition diagram of an embodiment of the present utility model. DETAILED DESCRIPTION

[0018] The specific implementation of the present invention will be described below with reference to the accompanying drawings. Figure 1 As shown: An integrated heat dissipation system for fuel cell system testing, which includes a first radiator 1 and a second radiator 2,

[0019] The first radiator 1 is connected to the first heat dissipation inlet pipe 3 and the first heat dissipation outlet pipe 4 respectively, and the second radiator 2 is connected to the second heat dissipation inlet pipe 5 and the second heat dissipation outlet pipe 6 respectively.

[0020] The integrated heat dissipation system further includes a first plate heat exchanger 7 and a second plate heat exchanger 8. The first heat dissipation inlet pipe 3 is connected to the shell of the first plate heat exchanger 7 via a pipe with a first control valve 24. The first heat dissipation outlet pipe 4 is also connected to the shell of the first plate heat exchanger 7 via a pipe. The inner cavity of the pipe layer of the first plate heat exchanger 7 is connected to the waste heat recovery terminal 11 via the first heat supply outlet pipe 9 and the first heat supply return pipe 10.

[0021] The second heat dissipation inlet pipe 5 is connected to the shell of the second plate heat exchanger 8 through a pipe with a second control valve 12. The second heat dissipation outlet pipe 6 is also connected to the shell of the second plate heat exchanger 8 through a pipe. The inner cavity of the pipe layer of the second plate heat exchanger 8 is connected to the waste heat recovery terminal 11 through the second heat supply outlet pipe 13 and the second heat supply return pipe 14.

[0022] The first heat dissipation inlet pipe 3 and the second heat dissipation outlet pipe 6 are connected via a first regulating pipe 15. A first regulating valve 16 and a second regulating valve 17 are respectively provided at the connection between the first regulating pipe 15, the first heat dissipation inlet pipe 3 and the second heat dissipation outlet pipe 6.

[0023] A second regulating pipeline 18 is connected between the first regulating pipeline 15 and the second heat dissipation inlet pipeline 5. A third regulating valve 19 is provided at the connection between the second regulating pipeline 18 and the second heat dissipation inlet pipeline 5.

[0024] A control pipeline 20 is connected between the first heat dissipation outlet pipeline 4 and the second heat dissipation outlet pipeline 6. An outlet communication control valve 21 is provided on the control pipeline 20.

[0025] At the ends of the first heat dissipation outlet pipeline 4 and the second heat dissipation outlet pipeline 6, a first outlet control valve 22 and a second outlet control valve 23 are respectively provided.

[0026] A plate heat exchanger control pipeline 25 is provided between the first heating return pipeline 10 and the second heating outlet pipeline 13, and a first flow control valve 26 and a second flow control valve 27 are respectively provided at the connection between the plate heat exchanger control pipeline 25 and the first heating return pipeline 10 and the second heating outlet pipeline 13.

[0027] The working process of the integrated heat dissipation system for testing a fuel cell system according to an embodiment of the present invention is as follows: when the first radiator 1 and the second radiator 2 are required to work in parallel, the coolant enters the first radiator 1 through the first heat dissipation inlet pipe 3, and at the same time, the coolant also enters the second heat dissipation inlet pipe 5 through the second regulating pipe 18, and finally enters the second radiator 2; the second outlet control valve 23 is closed, the outlet communication control valve 21 and the first outlet control valve 22 are opened, the coolant in the first radiator 1 directly passes through the first heat dissipation outlet pipe 4, and the coolant in the second radiator 2 flows into the control pipe 20 through the second heat dissipation outlet pipe 6, and finally also merges into the first heat dissipation outlet pipe 4, and finally enters the fuel cell system. During this process, the first radiator 1 and the second radiator 2 are connected in parallel with each other;

[0028] When the first radiator 1 and the second radiator 2 are required to operate in series, the coolant directly enters the second radiator 2 through the second heat dissipation inlet pipe 5 and is discharged from the second heat dissipation outlet pipe 6. By controlling the first regulating valve 16 and the second regulating valve 17, the first regulating pipe 15 is connected to the second heat dissipation outlet pipe 6 and the first heat dissipation inlet pipe 3. The coolant passes through the first regulating pipe 15 and enters the first heat dissipation inlet pipe 3 and then enters the first radiator 1. Finally, the coolant enters the fuel cell system through the first heat dissipation outlet pipe 4. In this process, the first radiator 1 and the second radiator 2 are connected in series.

[0029] During the operation of this integrated heat dissipation system, the first plate heat exchanger 7 and the second plate heat exchanger 8 can work in series. By controlling the first control valve 24, the coolant carrying heat entering the first heat dissipation inlet pipeline 3 can be directly allowed to enter the shell layer of the first plate heat exchanger 7. By controlling the second control valve 12, the coolant carrying heat entering the second heat dissipation inlet pipeline 5 can be directly allowed to enter the shell layer of the second plate heat exchanger 8; the heat exchange medium flows into the tube layer of the first plate heat exchanger 7 through the first heat supply outlet pipeline 9, and after fully exchanging heat with the coolant in the shell layer of the first plate heat exchanger 7, it passes through the plate heat exchanger 7. The heat exchanger control line 25 directly enters the tube layer of the second plate heat exchanger 8, and after a secondary temperature increase therein, it finally returns to the waste heat recovery terminal 11 through the second heating return line 14. The waste heat recovery terminal 11 here can be a conventional heat dissipation device such as a radiator or heat sink. During this process, the first radiator 1 and the second radiator 2 can be inoperative or inoperative. When they are inoperative, the waste heat recovery efficiency is the highest. When they are inoperative, it is equivalent to the system dissipating part of the heat into the air environment and recovering part of the heat (determined by the needs of the waste heat recovery terminal 11).

[0030] Similarly, the first plate heat exchanger 7 and the second plate heat exchanger 8 can also work independently (in parallel). It is only necessary to adjust the first flow control valve 26 and the second flow control valve 27 at both ends of the plate heat exchanger control pipeline 25 to cut off the plate heat exchanger control pipeline 25. The heat exchange medium can either enter the first plate heat exchanger 7 through the first heat supply outlet pipeline 9 and return to the waste heat recovery terminal 11 through the first heat supply return pipeline 10 after sufficient heat exchange, or enter the second plate heat exchanger 8 through the second heat supply outlet pipeline 13 and return to the waste heat recovery terminal 11 through the second heat supply return pipeline 14 after sufficient heat exchange.

[0031] The first radiator 1 and the second radiator 2 in this system can quickly diffuse the heat generated during the operation of the fuel cell system into the air environment, ensuring that the fuel cell system will not overheat; through the selection of parallel connection (working alone) and series connection (working simultaneously), the heat dissipation requirements in different situations can be matched; at the same time, this part of the heat can also be recovered and utilized, and the two plate heat exchangers used for heat recovery can also work together with the two radiators to further improve the heat dissipation efficiency.

Claims

1. An integrated cooling system for fuel cell system testing, characterized by: The integrated heat dissipation system comprises a first heat sink (1) and a second heat sink (2), The first radiator (1) is connected to the first heat dissipation inlet pipeline (3) and the first heat dissipation outlet pipeline (4), respectively; the second radiator (2) is connected to the second heat dissipation inlet pipeline (5) and the second heat dissipation outlet pipeline (6), respectively; The integrated heat dissipation system further comprises a first plate heat exchanger (7) and a second plate heat exchanger (8), wherein the first heat dissipation inlet pipe (3) is connected to the shell of the first plate heat exchanger (7) via a pipe with a first control valve (24), the first heat dissipation outlet pipe (4) is also connected to the shell of the first plate heat exchanger (7) via a pipe, and the inner cavity of the pipe layer of the first plate heat exchanger (7) is connected to the waste heat recovery terminal (11) via a first heat supply outlet pipe (9) and a first heat supply return pipe (10). The second heat dissipation inlet pipeline (5) is connected to the shell of the second plate heat exchanger (8) through a pipeline with a second control valve (12), and the second heat dissipation outlet pipeline (6) is also connected to the shell of the second plate heat exchanger (8) through a pipeline. The inner cavity of the tube layer of the second plate heat exchanger (8) is connected to the waste heat recovery terminal (11) through the second heat supply outlet pipeline (13) and the second heat supply return pipeline (14). The first heat dissipation inlet pipeline (3) and the second heat dissipation outlet pipeline (6) are connected via a first regulating pipeline (15), and a first regulating valve (16) and a second regulating valve (17) are respectively provided at the connection between the first regulating pipeline (15), the first heat dissipation inlet pipeline (3) and the second heat dissipation outlet pipeline (6). A second regulating pipeline (18) is connected between the first regulating pipeline (15) and the second heat dissipation inlet pipeline (5), and a third regulating valve (19) is provided at the connection between the second regulating pipeline (18) and the second heat dissipation inlet pipeline (5). A control pipeline (20) is connected between the first heat dissipation outlet pipeline (4) and the second heat dissipation outlet pipeline (6), and an outlet communication control valve (21) is provided on the control pipeline (20). A first outlet control valve (22) and a second outlet control valve (23) are respectively provided at the ends of the first heat dissipation outlet pipeline (4) and the second heat dissipation outlet pipeline (6). A plate heat exchanger control pipeline (25) is provided between the first heating return pipeline (10) and the second heating outlet pipeline (13), and a first flow control valve (26) and a second flow control valve (27) are provided at the connection points between the plate heat exchanger control pipeline (25) and the first heating return pipeline (10) and the second heating outlet pipeline (13), respectively.

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