Single-action testing device for fuel cell system

Abstract

The utility model discloses a single-action testing device for a fuel cell system. The single-action testing device comprises a hydrogen path, an air path, a water path and an electric pile, the hydrogen path consists of a hydrogen pump, a steam-water separator, a stop valve, a proportional valve, a drainage electromagnetic valve, a nitrogen removal valve and a hydrogen pump controller; the stop valve and the proportional valve are arranged on a hydrogen inlet pipeline of the galvanic pile, a hydrogen outlet pipeline of the galvanic pile is connected with the steam-water separator, a water discharge port of the steam-water separator is connected with the water discharge electromagnetic valve, and an exhaust port of the steam-water separator is connected with the nitrogen discharge valve; the steam-water separator is connected with a hydrogen pump, and the hydrogen pump is connected with a hydrogen inlet pipeline of the electric pile; and the hydrogen pump is connected with the hydrogen pump controller. According to the utility model, all parts and wire harnesses of the fuel cell system entering the test room can be ensured to have no problems, the problems can be found in advance, the utilization rate of the test room can reach the highest, and the problem that the parts or the wire harnesses of the fuel cell system occupy the resources of the test room to check the problems of the parts or the wire harnesses due to the problems of the parts or the wire harnesses of the fuel cell system can be prevented.

Description

Technical Field

[0001] The utility model belongs to the field of fuel cell testing, and in particular relates to a single-action testing device for a fuel cell system. Background Art

[0002] Fuel cell systems have broad application prospects in the energy field and have attracted much attention due to their high efficiency and environmental protection. However, fuel cells cannot be directly installed on vehicles after they are assembled on the production line. Each functional module needs to be debugged to ensure that the system can operate normally and efficiently. Only after the test is completed and there are no problems can they be installed on the vehicle.

[0003] In the existing technology, the fuel cell system is directly put into the test room for testing after it is offline. The system may not be tested smoothly due to some system components or system wiring harness problems when entering the test room. It takes a lot of time to troubleshoot the problem. Since the test room resources of each company are limited, if a lot of time is wasted on troubleshooting, it will lead to low production efficiency of the company. In order to solve the problem that the fuel cell system cannot be tested in the test room due to problems with components and wiring harnesses, a lot of time is wasted on troubleshooting. Therefore, it is necessary to develop a test device for each component to work separately to solve the above problems. Utility Model Content

[0004] Aiming at the problems existing in the traditional fuel cell system test, the utility model provides a single-action test device for the fuel cell system.

[0005] The technical solution of the utility model is as follows.

[0006] A single-action test device for a fuel cell system, comprising a hydrogen circuit, an air circuit, a water circuit and a fuel cell stack;

[0007] The hydrogen circuit is composed of a hydrogen pump, a steam-water separator, a stop valve, a proportional valve, a water discharge solenoid valve, a nitrogen discharge valve and a hydrogen pump controller; the stop valve and the proportional valve are arranged on the hydrogen inlet pipeline of the fuel cell stack, the hydrogen outlet pipeline of the fuel cell stack is connected to the steam-water separator, the water discharge port of the steam-water separator is connected to the water discharge solenoid valve, and the exhaust port of the steam-water separator is connected to the nitrogen discharge valve; the steam-water separator is connected to the hydrogen pump, and the hydrogen pump is further connected to the hydrogen inlet pipeline of the fuel cell stack; the hydrogen pump is connected to the hydrogen pump controller;

[0008] The water circuit is composed of a water pump, a PTC and a three-way valve, the water outlet pipeline of the battery stack is connected to the water pump, the PTC and the three-way valve in sequence, and the three-way valve is also connected to the battery stack and the water pump respectively;

[0009] The air circuit is composed of an air compressor controller, an air compressor, a humidifier, a first throttle and a second throttle; the air intake pipeline of the fuel cell stack is sequentially provided with an air compressor, a humidifier and a first throttle, and the air compressor is connected to the air compressor controller; the air intake pipeline of the fuel cell stack is connected to the humidifier, and the wet side outlet of the humidifier is connected to the tail exhaust through the second throttle;

[0010] The water pump, the air compressor controller and the hydrogen pump controller are connected to the high-voltage power supply module and the low-voltage power supply module through the high-voltage wiring harness and the low-voltage wiring harness respectively.

[0011] Furthermore, the water discharge solenoid valve and the nitrogen discharge valve are both connected to the tail discharge.

[0012] Furthermore, the air compressor is also connected to the fuel cell stack through a bypass valve.

[0013] Furthermore, the high-voltage power supply module is a high-voltage power supply.

[0014] Furthermore, the low-voltage power supply module is a 24V low-voltage power supply.

[0015] Furthermore, the high-voltage wiring harness has two OT terminals at one end and a plug for plugging into components at the other end. The two OT terminals are directly fixed to the positive and negative poles of the high-voltage power supply with studs and are safely protected. The plug at the other end is directly plugged into the component to be tested.

[0016] Furthermore, the low-voltage wiring harness is a low-voltage power line and a CAN communication line, which are connected to components through connectors.

[0017] Furthermore, the pressure sensor is arranged on the system hydrogen, water and air pipelines, and is connected to the sensor through a low-voltage wiring harness.

[0018] Furthermore, the temperature sensor is arranged on the system water circuit and air pipeline, and is connected to the sensor through a low-voltage wiring harness.

[0019] Furthermore, the temperature and pressure integrated sensor is arranged on the system water path and connected to the sensor via a low-voltage wiring harness.

[0020] In the utility model, key components are tested using a test bench and a universal wiring harness before assembly to ensure that the assembled components are in good condition, and after the system is assembled, the test bench and the universal wiring harness are used to perform a preliminary power-on operation test on the fuel cell system to ensure that the fuel cell system condition can meet the test requirements.

[0021] In the utility model, key fuel cell components are tested by universal wiring harnesses before assembly, such as air compressors, water pumps, hydrogen pumps, PTC (liquid heaters) and other components, to ensure that the high-voltage components of the assembly system are in normal condition.

[0022] After the fuel cell system is assembled, the system is initially powered on and tested using a universal wiring harness on the production line to see if the components can start normally and if CAN communication is normal. This can also detect if there are any problems with the wiring harness of the system itself. After confirming that there are no problems with the key components of the system and the wiring harness of the system itself, the fuel cell can be directly sent to the test room for debugging of each functional module.

[0023] Compared with the prior art, the advantages of the present invention are:

[0024] After the fuel cell system enters the test room, the pipes and wiring harnesses must be connected before testing can begin. If there is a problem with a component or wiring harness, the testing work needs to be stopped to investigate the cause of the problem, which will waste a lot of time and occupy test room resources. Currently, test room resources of various manufacturers are already in short supply. The advantage of the utility model is that it can ensure that all components and wiring harnesses of the fuel cell system entering the test room are in good condition, and problems can be discovered in advance, so that the utilization rate of the test room is maximized, and it is prevented that problems with the fuel cell system components or the system's own wiring harness will prevent the test room resources from being occupied to investigate the components or wiring harness problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Check the connection diagram for high voltage components;

[0026] Figure 2 This is a schematic diagram of the position of the single-action component system of the test device;

[0027] The components in the figure are as follows:

[0028] Hydrogen pump 1, steam-water separator 2, stop valve 3, proportional valve 4, drain solenoid valve 5, nitrogen exhaust valve 6, fuel cell stack 7, water pump 8, PTC 9, three-way valve 10, air compressor controller 11, air compressor 12, bypass valve 13, humidifier 14, first throttle valve 15, second throttle valve 16, hydrogen pump controller 17. DETAILED DESCRIPTION

[0029] The utility model is further described below in conjunction with the accompanying drawings.

[0030] like Figure 2 As shown, a single-action test device for a fuel cell system includes a hydrogen circuit, an air circuit, a water circuit and a fuel cell stack 7;

[0031] The hydrogen circuit is composed of a hydrogen pump 1, a steam-water separator 2, a stop valve 3, a proportional valve 4, a water discharge solenoid valve 5 (with a heating function), a nitrogen discharge valve 6 and a hydrogen pump controller 17; the stop valve 3 and the proportional valve 4 are arranged on the hydrogen inlet pipeline of the fuel cell 7, the hydrogen outlet pipeline of the fuel cell 7 is connected to the steam-water separator 2, the water discharge port of the steam-water separator 2 is connected to the water discharge solenoid valve 5, and the exhaust port of the steam-water separator 2 is connected to the nitrogen discharge valve 6; the steam-water separator 2 is connected to the hydrogen pump 1, and the hydrogen pump 1 is further connected to the hydrogen inlet pipeline of the fuel cell 7; the hydrogen pump 1 is connected to the hydrogen pump controller 17; the water discharge solenoid valve 5 and the nitrogen discharge valve 6 are both connected to the tail discharge.

[0032] The water circuit is composed of a water pump 8, a PTC 9 and a three-way valve 10. The water outlet pipeline of the battery stack 7 is connected to the water pump 8, the PTC 9 and the three-way valve 10 in sequence. The three-way valve 10 is also connected to the battery stack 7 and the water pump 8 respectively.

[0033] The air route is composed of an air compressor controller 11, an air compressor 12, a humidifier 14, a first throttle valve 15 and a second throttle valve 16; the air intake pipeline of the fuel cell stack 7 is sequentially provided with an air compressor 12, a humidifier 14 and a first throttle valve 15, and the air compressor 12 is connected to the air compressor controller 11; the air intake pipeline of the fuel cell stack 7 is connected to the humidifier 14, and the wet side outlet of the humidifier 14 is connected to the tail exhaust through the second throttle valve 16; the air compressor 12 is also connected to the fuel cell stack 7 through a bypass valve 13.

[0034] like Figure 1 As shown, the water pump 8, the air compressor controller 11 and the hydrogen pump controller 17 are connected to the high-voltage power supply module and the low-voltage power supply module through the high-voltage wiring harness and the low-voltage wiring harness respectively.

[0035] In this embodiment, the high-voltage power supply module is a high-voltage power supply, and the low-voltage power supply module is a 24V low-voltage power supply.

[0036] In this embodiment, the high-voltage wiring harness has two OT terminals at one end and a plug for plugging into components at the other end. The two OT terminals are directly fixed to the positive and negative poles of the high-voltage power supply with studs and are well protected. The plug at the other end is directly plugged into the component to be tested. The low-voltage wiring harness is a low-voltage power line and a CAN communication line, which are connected to the components through connectors.

[0037] In this embodiment, Figure 2 As shown, the pressure sensor is arranged in the system hydrogen, water and air pipelines, and is connected to the sensor through a low-voltage wiring harness.

[0038] In this embodiment, Figure 2 As shown, the temperature sensor is arranged in the system water and air pipelines and is connected to the sensor through a low-voltage wiring harness.

[0039] In this embodiment, Figure 2 As shown, the integrated temperature and pressure sensor H is arranged on the system water path and connected to the sensor through a low-voltage wiring harness.

[0040] In this embodiment, the high and low voltage power supply modules need to be placed at the last station on the production line so that the single-action test of the relevant components can be performed after the fuel cell system is assembled.

[0041] The detection steps of this embodiment are as follows:

[0042] First, fix the OT terminal side of the high-voltage harness with studs to the positive and negative poles of the high-voltage power module and take safety protection measures. Connect one end of the low-voltage harness to the low-voltage power module and the CAN box, and then connect the CAN box to the computer.

[0043] 1. Components detection: Use high-voltage power supply and 24V low-voltage power supply to connect the corresponding components through the universal wiring harness (high-voltage wiring harness and low-voltage wiring harness) and connect to the computer through the CAN box (attached Figure 1 For wiring diagram), first pass low voltage power to the component to be tested, and check whether the component can communicate normally through the computer host computer. Then pass high voltage power to the component, and use the host computer to single-move the component to see whether the component can start normally.

[0044] 2. Fuel cell system inspection: After the fuel cell system is assembled and arrives at the single-action test station, connect it to the water pump, hydrogen pump, air compressor and other components through the high-voltage universal wiring harness, and then connect it to the accessory plug on the fuel cell system body wiring harness through the low-voltage universal wiring harness. First, pass low-voltage electricity to the system to see whether the communication of each component is normal and whether the temperature and pressure sensors of each channel are normal. If the communication is normal, check whether the valve bodies (proportional valve, stop valve, three-way valve, bypass valve, throttle, etc.) and water pump, hydrogen pump, air compressor, PTC and other components can work normally through the computer host computer (attached Figure 2 The above are parts that can be tested in advance). After confirming that all parts are OK, the fuel cell system can be sent to the test room for a full range of tests.

Claims

1. A single-action test device for a fuel cell system, characterized in that: including a hydrogen circuit, an air circuit, a water circuit and a battery stack (7); The hydrogen circuit is composed of a hydrogen pump (1), a steam-water separator (2), a stop valve (3), a proportional valve (4), a water discharge solenoid valve (5), a nitrogen discharge valve (6) and a hydrogen pump controller (17); the stop valve (3) and the proportional valve (4) are arranged on the hydrogen inlet pipeline of the fuel cell stack (7); the hydrogen outlet pipeline of the fuel cell stack (7) is connected to the steam-water separator (2); the water discharge port of the steam-water separator (2) is connected to the water discharge solenoid valve (5); the exhaust port of the steam-water separator (2) is connected to the nitrogen discharge valve (6); the steam-water separator (2) is connected to the hydrogen pump (1), and the hydrogen pump (1) is further connected to the hydrogen inlet pipeline of the fuel cell stack (7); the hydrogen pump (1) is connected to the hydrogen pump controller (17); The water circuit is composed of a water pump (8), a PTC (9) and a three-way valve (10); the water outlet pipeline of the battery stack (7) is connected to the water pump (8), the PTC (9) and the three-way valve (10) in sequence; and the three-way valve (10) is also connected to the battery stack (7) and the water pump (8) respectively; The air circuit is composed of an air compressor controller (11), an air compressor (12), a humidifier (14), a first throttle valve (15) and a second throttle valve (16); the air intake pipeline of the battery stack (7) is provided with an air compressor (12), a humidifier (14) and a first throttle valve (15) in sequence, and the air compressor (12) is connected to the air compressor controller (11); the air intake pipeline of the battery stack (7) is connected to the humidifier (14), and the wet side outlet of the humidifier (14) is connected to the tail exhaust through the second throttle valve (16); The water pump (8), the air compressor controller (11) and the hydrogen pump controller (17) are connected to the high-voltage power supply module and the low-voltage power supply module respectively through the high-voltage wiring harness and the low-voltage wiring harness.

2. A fuel cell system single-action test device as claimed in claim 1, characterized in that: The water discharge solenoid valve (5) and the nitrogen discharge valve (6) are both connected to the tail discharge.

3. A fuel cell system single-action test device as claimed in claim 1, characterized in that: The air compressor (12) is also connected to the fuel cell stack (7) via a bypass valve (13).

4. A fuel cell system single-action test device as claimed in claim 1, characterized in that: The high-voltage power supply module is a high-voltage power supply.

5. A fuel cell system single action test device as claimed in claim 1, characterized in that: The low voltage power supply module is a 24V low voltage power supply.

6. A fuel cell system single action test device as claimed in claim 1, characterized in that: The high-voltage wiring harness has two OT terminals at one end and a plug that plugs into the component at the other end. The two OT terminals are directly fixed to the positive and negative poles of the high-voltage power supply with studs and are safely protected. The plug at the other end is directly plugged into the component to be tested.

7. A fuel cell system single action test device as claimed in claim 1, characterized in that: The low-voltage wiring harness is a low-voltage power line and a CAN communication line, which are connected to components through connectors.

8. A fuel cell system single action test device as claimed in claim 1, characterized in that: The pressure sensor is arranged in the system hydrogen, water and air pipelines and connected to the sensor through a low-voltage wiring harness.

9. A fuel cell system single action test device as claimed in claim 1, characterized in that: The temperature sensor is arranged in the system water and air pipelines and connected to the sensor through a low-voltage wiring harness.

10. A fuel cell system single action test device as claimed in claim 1, characterized in that: The integrated temperature and pressure sensor is arranged in the system water circuit and connected to the sensor through a low-voltage wiring harness.

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