Joint structure integrating gas flow control and distribution

Abstract

The utility model relates to the field of fuel cells, in particular to a connector structure integrating gas flow control and distribution, which comprises a connector body, a gas channel arranged in the connector body and three throttle valve mounting bases arranged on the connector body. An air system electromagnetic switch valve, a hydrogen system electromagnetic switch valve and a heat management system electromagnetic switch valve are arranged on the three throttle valve mounting bases respectively, an air inlet body communicated with the air channel is arranged on the connector body, an air inlet and a proportional valve air inlet are formed in the air inlet body, and a proportional valve is arranged on the air inlet body. A pressure sensor mounting base is arranged on the connector body, and the pressure sensor is arranged on the pressure sensor mounting base. According to the utility model, more precise pressure control and real-time monitoring can be carried out on compressed air entering the fuel cell system, so that not only can the airtightness test of the fuel cell system be met, but also the protection of the fuel cell system can be met.

Description

Technical Field

[0001] The utility model relates to the field of fuel cells, in particular to a joint structure integrating gas flow control and distribution. Background Art

[0002] The hydrogen fuel cell system has the advantages of zero emissions and fast hydrogen refueling. It can effectively solve the problems of long charging time and short driving range of lithium batteries. It is a new energy vehicle power system with broad development prospects. The hydrogen fuel cell system needs to pass the air tightness test after production is completed to ensure that the hydrogen fuel cell system put into use will not fail or have performance defects. The hydrogen fuel cell system is usually composed of components such as the battery stack, hydrogen system, air system, thermal management system and control system. The principle of the hydrogen fuel cell system air tightness test is to inject compressed air into the hydrogen system, air system and thermal management system respectively, and perform pressure maintenance tests according to the system air tightness requirements. Therefore, it is necessary to design a structure that can meet the needs of injecting compressed air into the hydrogen system, air system and thermal management system at the same time.

[0003] Currently, there is a lack of corresponding structures to control the compressed air flow requirements and to avoid system damage caused by the instantaneous injection of extremely high-pressure compressed air into the system. Utility Model Content

[0004] The utility model aims to solve the problem that the hydrogen fuel cell in the background technology lacks a structure for controlling the flow of compressed air, and proposes a joint structure integrating gas flow control and distribution.

[0005] The technical solution of the utility model: a joint structure integrating gas flow control and distribution, comprising a joint body, a gas channel is arranged in the joint body, a plug is arranged on the opening of the joint body for the gas channel, three throttle mounting bases are arranged on the joint body, the three throttle mounting bases are all connected with the gas channel, an air system electromagnetic switch valve, a hydrogen system electromagnetic switch valve and a thermal management system electromagnetic switch valve are respectively arranged on the three throttle mounting bases, a gas intake connected with the gas channel is arranged on the joint body, an air inlet and a proportional valve inlet are arranged on the gas intake, a proportional valve is arranged on the gas intake, the proportional valve is connected with the proportional valve inlet, a pressure sensor mounting base is arranged on the joint body, and the pressure sensor is arranged on the pressure sensor mounting base.

[0006] Preferably, an air inlet joint is provided on the air intake, the air inlet joint is connected with the air inlet, a plurality of proportional valve mounting holes are provided on the air intake, the proportional valve is connected with the air intake through the proportional valve mounting holes, an arc-shaped channel is provided on the air intake, and compressed air enters the air intake through the air inlet and then enters the proportional valve through the proportional valve inlet, and then re-enters the gas channel through the arc-shaped channel.

[0007] Preferably, an exhaust port connector is provided on the exhaust port, and a plurality of connectors are provided at the bottom of the connector body.

[0008] Preferably, the exhaust port connector is connected to the pressure relief valve via a pipeline.

[0009] Preferably, the air system electromagnetic switch valve, the hydrogen system electromagnetic switch valve and the thermal management system electromagnetic switch valve are all connected to the throttle mounting base through a plurality of bolts.

[0010] Compared with the prior art, the utility model has the following beneficial technical effects: through the joint body, it is possible to use a compressed air source, and at the same time perform air tightness detection on the hydrogen system, air system and thermal management system in the fuel cell system, and integrate a proportional valve, a pressure sensor and a throttle mounting base, so as to achieve more precise pressure control and real-time monitoring of the compressed air entering the fuel cell system, which can meet the air tightness test of the fuel cell system and the protection of the fuel cell system at the same time, and will not cause damage to the fuel cell system due to excessive compressed air pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model;

[0012] Figure 2 and Figure 3 Both Figure 1 Schematic diagram of part of the structure.

[0013] Figure markings: 1. air inlet; 2. exhaust port; 3. connector body; 4. pressure sensor mounting base; 5. gas channel; 6. throttle mounting base; 7. proportional valve; 8. air inlet connector; 9. pressure sensor; 10. plug; 11. proportional valve mounting hole; 12. air system solenoid switch valve; 13. hydrogen system solenoid switch valve; 14. thermal management system solenoid switch valve; 15. connector; 16. exhaust port connector. DETAILED DESCRIPTION

[0014] like Figure 1-Figure 3As shown, the utility model proposes a joint structure with integrated gas flow control and distribution, including a joint body 3, a gas channel 5 is arranged in the joint body 3, a plug 10 is arranged on the opening of the joint body 3 of the gas channel 5, the plug 10 is connected to the joint body 3 through a plurality of bolts, three throttle mounting bases 6 are arranged on the joint body 3, the three throttle mounting bases 6 are all connected with the gas channel 5, an air system electromagnetic switch valve 12, a hydrogen system electromagnetic switch valve 13 and a thermal management system electromagnetic switch valve 14 are respectively arranged on the three throttle mounting bases 6, a gas intake connected with the gas channel 5 is arranged on the joint body 3, an air inlet 1 and a proportional valve inlet are arranged on the gas intake, a proportional valve 7 is arranged on the gas intake, the proportional valve 7 is connected with the proportional valve inlet, a pressure sensor mounting base 4 is arranged on the joint body 3, and a pressure sensor 9 is arranged on the pressure sensor mounting base 4.

[0015] Furthermore, an air inlet connector 8 is provided on the air inlet, and the air inlet connector 8 is connected with the air inlet 1. A plurality of proportional valve mounting holes 11 are provided on the air inlet, and the proportional valve 7 is connected with the air inlet through the proportional valve mounting holes 11. An arc-shaped channel is provided on the air inlet, and the compressed air enters the air inlet through the air inlet 1 and then enters the proportional valve 7 through the proportional valve air inlet, and then re-enters the gas channel 5 through the arc-shaped channel.

[0016] Further, an exhaust port connector 16 is provided on the exhaust port 2, and a plurality of connectors 15 are provided at the bottom of the connector body 3. The connector is provided with a plurality of mounting holes, and the connector body 3 is mounted and fixed through the connector 15. The exhaust port connector 16 is connected to the pressure relief valve through a pipeline, and a pressure relief valve structure is provided in the system.

[0017] Furthermore, the air system electromagnetic switch valve 12, the hydrogen system electromagnetic switch valve 13 and the thermal management system electromagnetic switch valve 14 are all connected to the throttle mounting base 6 through a plurality of bolts.

[0018] In summary, the utility model integrates gas flow control and monitoring components such as proportional valve 7, pressure sensor 9, throttle valve, etc.: proportional valve 7 can control the gas flow rate; pressure sensor 9 is used to monitor the real-time gas pressure, and the throttle valve can adjust the gas flow rate entering the fuel cell stack; the structure itself has a gas input interface, a gas distribution interface, and a gas discharge interface, and an O-ring seal is designed at the connection of each selected part to ensure the good air tightness of the structure itself; the structure is processed using 6061 aluminum alloy, and the material cost is 30% lower than that of stainless steel materials, and the appearance is beautiful. It perfectly solves the air tightness detection requirements of the fuel cell system, and has the following advantages: the connector has a high degree of integration, and the overall structural strength is excellent, the material cost is low, the machining process is integrated, and the air tightness is good.

[0019] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A joint structure integrating gas flow control and distribution, characterized in that: The invention comprises a joint body (3), a gas passage (5) is arranged in the joint body (3), a plug (10) is arranged on the opening of the joint body (3) of the gas passage (5), three throttle mounting bases (6) are arranged on the joint body (3), the three throttle mounting bases (6) are all connected to the gas passage (5), an air system electromagnetic switch valve (12), a hydrogen system electromagnetic switch valve (13) and a thermal management system electromagnetic switch valve (14) are respectively arranged on the three throttle mounting bases (6), an air intake connected to the gas passage (5) is arranged on the joint body (3), an air intake port (1) and a proportional valve air intake port are arranged on the air intake port, a proportional valve (7) is arranged on the air intake port, the proportional valve (7) is connected to the proportional valve air intake port, a pressure sensor mounting base (4) is arranged on the joint body (3), and a pressure sensor (9) is arranged on the pressure sensor mounting base (4).

2. The joint structure for integrated gas flow control and distribution according to claim 1, characterized in that: An air inlet joint (8) is provided on the air inlet, the air inlet joint (8) is connected to the air inlet (1), a plurality of proportional valve mounting holes (11) are provided on the air inlet, the proportional valve (7) is connected to the air inlet through the proportional valve mounting holes (11), an arc-shaped channel is provided on the air inlet, and compressed air enters the air inlet through the air inlet 1 and then enters the proportional valve (7) through the proportional valve air inlet, and then re-enters the gas channel (5) through the arc-shaped channel.

3. The integrated gas flow control and distribution joint structure according to claim 1, characterized in that: An exhaust port connector (16) is arranged on the exhaust port (2), and a plurality of connectors (15) are arranged at the bottom of the connector body (3).

4. The joint structure for integrated gas flow control and distribution according to claim 3, characterized in that: The exhaust port connector (16) is connected to the pressure relief valve through a pipeline.

5. The joint structure for integrated gas flow control and distribution according to claim 1, characterized in that: The air system electromagnetic switch valve (12), the hydrogen system electromagnetic switch valve (13) and the thermal management system electromagnetic switch valve (14) are all connected to the throttle mounting base (6) via a plurality of bolts.

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