CN110931822B - Integrated multi-way joint control valve for fuel cell system - Google Patents

Integrated multi-way joint control valve for fuel cell system Download PDF

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Publication number
CN110931822B
CN110931822B CN201911409055.7A CN201911409055A CN110931822B CN 110931822 B CN110931822 B CN 110931822B CN 201911409055 A CN201911409055 A CN 201911409055A CN 110931822 B CN110931822 B CN 110931822B
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Prior art keywords
joint
control valve
way joint
way
heat exchanger
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CN110931822A (en
Inventor
叶遥立
刘兵
王兵杰
陆永卷
李昌煜
覃敏航
陈军荣
杨升
王福
夏景霖
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Guangxi Yuchai Machinery Co Ltd
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Guangxi Yuchai Machinery Co Ltd
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00Fuel cells; Manufacture thereof
    • H01M8/04Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04007Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00Fuel cells; Manufacture thereof
    • H01M8/04Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30Hydrogen technology
    • Y02E60/50Fuel cells

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Fuel Cell (AREA)

Abstract

The invention discloses an integrated multi-way joint control valve for a fuel cell system, relates to the technical field of vehicle fuel cell systems, and solves the technical problems of low integration level and inconvenience in arrangement in the prior art. The multi-way joint after the electric pile and the water pump multi-way joint are integrated on the flow control valve, the multi-way joint after the electric pile is respectively connected with one end of the electric pile, one end of a cabin heater, one end of a cathode heat exchanger, one end of an anode heat exchanger and one end of a radiator, and the water pump multi-way joint is respectively connected with the other end of the cabin heater, the other end of the anode heat exchanger and one end of a cooling liquid circulating pump. The invention has reasonable structure, high integration level and convenient arrangement, effectively reduces the arrangement space, also avoids the problem of larger pressure drop of the coolant flowing through the junction, and effectively improves the working efficiency of the thermal management subsystem.

Description

Integrated multi-way joint control valve for fuel cell system
Technical Field
The present invention relates to the technical field of fuel cell systems for vehicles, and more particularly, to an integrated multi-way joint control valve for a fuel cell system.
Background
The fuel cell system engine is a power system for new energy automobiles. The fuel cell system engine includes core components (i.e., a fuel cell stack, hereinafter simply referred to as a stack), electrical accessories (i.e., an air compressor, a humidifier, a heat exchanger, a sensor, etc.), connected plumbing joints, mechanical structures, and the like. The core component of the fuel cell system is an electrochemical device that generates electrical energy using an electrochemical reaction of fuel hydrogen and oxidant air.
The electric pile can generate a large amount of heat in the process of generating electricity, and the heat needs to be taken away by cooling liquid to control the temperature of the electric pile. The control system of the flow rate and the temperature of the cooling liquid is a thermal management subsystem of the fuel cell system, the common structure of which is shown in a dotted line frame in fig. 1, and the thermal management subsystem mainly comprises a galvanic pile 1, a deionizer 2, a cathode heat exchanger 3, an anode heat exchanger 4, a cabin heater 5, a cooling liquid circulating pump 6, a flow control valve 7 and a filter 8. The thermal management subsystem realizes the thermal management of the fuel cell system by controlling the flow rate and the temperature of the cooling liquid flowing through each component, and ensures that the electric pile operates in a high-efficiency area; meanwhile, the thermal management subsystem also plays roles of preheating the electric pile 1 and preserving heat in the low-temperature starting process, and low-temperature starting is realized. In addition, the cooling liquid in the thermal management subsystem is cooled by the radiator 9 and recycled after being cooled.
At present, the pipeline design schemes of the thermal management subsystem mainly comprise the following schemes:
(1) The flow is split through a plurality of T-shaped three-way connectors, and flow distribution control among all loops is realized by using flow control valves. However, the scheme ensures that the integration level of the thermal management subsystem is not high, the joint and the control valve are not convenient to disperse and arrange, and the pressure drop of the cooling liquid is larger when the cooling liquid flows through the T-shaped three-way joint.
(2) Reducing some of the coolant loops or merging some of the components of the coolant loops, but still using flow control valves to control the flow distribution of each loop. The scheme reduces the number of T-shaped three-way connectors, but can reduce the control degree of the flow of the cooling liquid. In addition, the scheme still has the problem that the integration level of the cooling liquid path is not high and the T-shaped three-way joint is dispersed in the system, so that the arrangement is inconvenient.
Disclosure of Invention
The invention aims to solve the technical problem of providing an integrated multi-way joint control valve for a fuel cell system, which aims at the defects of the prior art, has high integration level and is convenient to arrange.
The technical scheme of the invention is as follows: the utility model provides an integrated form multi-way joint control valve for fuel cell system, includes the flow control valve, the integration is equipped with the multi-way joint behind the pile and the multi-way joint of water pump on the flow control valve, the multi-way joint is connected with the one end of pile, the one end of cabin heater, the one end of cathode heat exchanger, the one end of positive pole heat exchanger and the one end of radiator respectively behind the pile, the water pump multi-way joint is connected with the other end of cabin heater, the other end of positive pole heat exchanger and the one end of coolant circulation pump respectively.
The multi-way connector comprises a first connector, a second connector, a third connector, a fourth connector, a fifth connector and a sixth connector, wherein the first connector is connected with the water outlet end of the radiator through a flow control valve, the second connector is connected with the water inlet end of the radiator, the third connector is connected with the water outlet end of the galvanic pile, the fourth connector is connected with the water inlet end of the cabin heater, the fifth connector is connected with the water outlet end of the cathode heat exchanger, and the sixth connector is connected with the water inlet end of the anode heat exchanger.
Further, a sensor mounting joint is arranged on the body of the first joint.
Furthermore, a connecting seat is arranged at the joint of the third joint and the second joint.
Furthermore, the flow control valve is connected with the water outlet end of the radiator through a radiator water outlet connector, and the second connector is connected with the water inlet end of the radiator through a radiator water inlet connector.
Further, the first connector is connected with the flow control valve through a first connecting pipe, and the second connector is connected with the radiator water inlet connector through a second connecting pipe.
Further, the first connecting pipe and the second connecting pipe are both connecting hoses.
Still further, the water pump multi-way joint includes seventh joint, eighth joint, ninth joint and tenth joint, the seventh joint is installed on the flow control valve, the eighth joint is connected with the other end of cabin heater, the ninth joint is connected with the other end of positive pole heat exchanger, the tenth joint is connected with the one end of coolant circulation pump.
Further, a system fixing block is arranged between the flow control valve and the water pump multi-way joint.
Advantageous effects
The invention has the advantages that:
1. the multi-way connector is integrally connected with the electric pile, the cabin heater, the cathode heat exchanger, the deionizer and the anode heat exchanger after the electric pile, so that the use of T-shaped connectors in a thermal management subsystem is effectively reduced, the integration level is high, and the space arrangement is facilitated. In addition, the water pump multi-way joint is integrally connected with the cabin heater, the cooling liquid circulating pump and the anode heat exchanger, so that the use of a T-shaped joint in the thermal management subsystem is further reduced, the integration level of the thermal management subsystem is higher, and the arrangement of the space of the thermal management subsystem is facilitated.
2. The first connecting pipe and the second connecting pipe are both connecting hoses, so that the flow control valve connected with the multi-way joint behind the galvanic pile and the radiator water inlet joint can swing at any angle, the flow control valve is suitable for installation and arrangement requirements of different controls, and the flexibility and the applicability of the integrated multi-way joint control valve are greatly improved.
Drawings
FIG. 1 is a schematic diagram of a prior art thermal management subsystem;
FIG. 2 is a schematic diagram of the structure of the present invention;
FIG. 3 is a schematic view of the structure of the post stack multi-pass connector of the present invention;
FIG. 4 is a schematic view of the structure of the multi-way joint of the water pump of the present invention;
FIG. 5 is a schematic diagram of a connection structure of the present invention and a thermal management subsystem.
Wherein: 1-galvanic pile, 2-deionizer, 3-cathode heat exchanger, 4-anode heat exchanger, 5-cabin heater, 6-coolant circulation pump, 7-flow control valve, 8-filter, 9-radiator, 10-post-galvanic pile multi-pass joint, 11-water pump multi-pass joint, 12-radiator water outlet joint, 13-radiator water inlet joint, 14-first connecting pipe, 15-second connecting pipe, 16-system fixing block, 101-first joint, 102-second joint, 103-third joint, 104-fourth joint, 105-fifth joint, 106-sixth joint, 107-sensor mounting joint, 108-connecting seat, 111-seventh joint, 112-eighth joint, 113-ninth joint, 114-tenth joint.
Detailed Description
The invention is further described below in connection with the examples, which are not to be construed as limiting the invention in any way, but rather as falling within the scope of the claims.
Referring to fig. 2-5, an integrated multi-way joint control valve for a fuel cell system of the present invention includes a flow control valve 7, a post-stack multi-way joint 10 and a water pump multi-way joint 11 are integrally provided on the flow control valve 7, the post-stack multi-way joint 10 is respectively connected with one end of the stack 1, one end of the cabin heater 5, one end of the cathode heat exchanger 3, one end of the anode heat exchanger 4 and one end of the radiator 9, and the water pump multi-way joint 11 is respectively connected with the other end of the cabin heater 5, the other end of the anode heat exchanger 4 and one end of the coolant circulation pump 6, thereby forming a control valve of the integrated multi-way joint. The control valve of the integrated multi-way joint not only reduces the use of the T-shaped joint in the thermal management subsystem, but also simplifies the thermal management subsystem, greatly improves the integration level of the thermal management subsystem and is beneficial to space arrangement.
The post-stack multi-pass connector 10 includes a first connector 101, a second connector 102, a third connector 103, a fourth connector 104, a fifth connector 105, and a sixth connector 106. The first joint 101 is connected with the water outlet end of the radiator 9 through the flow control valve 7, the second joint 102 is connected with the water inlet end of the radiator 9, the third joint 103 is connected with the water outlet end of the electric pile 1, the fourth joint 104 is connected with the water inlet end of the cabin heater 5, the fifth joint 105 is connected with the water outlet end of the cathode heat exchanger 3, and the sixth joint 106 is connected with the water inlet end of the anode heat exchanger 4. Compared with the prior art, the multi-way connector 10 after the galvanic pile is used effectively reduces the use quantity of T-shaped connectors in the thermal management subsystem, specifically reduces four connectors, improves the integration level of the thermal management subsystem, simplifies the thermal management subsystem and is beneficial to the space arrangement of the thermal management subsystem.
Specifically, the third joint 103 is located at one end of the second joint 102, and the third joint 103 coincides with the axial direction of the second joint 102. Namely, the second joint 102 is directly connected with the third joint 103, so that the cooling liquid flowing out of the electric pile 1 directly flows to the radiator 9 through the second joint 102, and the phenomenon that the pressure at the joint is overlarge due to swirling at the joint of the first joint 101, the second joint 102 and the third joint 103 is avoided, thereby being beneficial to the flow of water flow. The first joint 101 extends obliquely outward along the junction of the second joint 102 and the third joint 103. That is, the first joint 101 and the second joint 102 are arranged at an acute angle, so that the first joint 101 is always filled with pressurized water in the working process of the thermal management subsystem, the pressure at the joint of the first joint 101, the second joint 102 and the third joint 103 is ensured, and the problem that the flow control degree of the cooling liquid is reduced due to the pressure reduction at the joint is avoided. The fourth joint 104, the fifth joint 105 and the sixth joint 106 are each disposed on the body of the second joint 102 and communicate with the internal flow passage of the second joint 102. The second joint 102 is used as a main flow channel of the cooling liquid, and the fourth joint 104, the fifth joint 105 and the sixth joint 106 are all arranged on the body of the second joint 102, so that the flow of the cooling liquid is facilitated, the cooling liquid can effectively flow to each component of the thermal management subsystem, and the integration degree of the integrated multi-way joint control is improved. Further, the fourth joint 104 is disposed adjacent to the third joint 103, the sixth joint 106 is disposed adjacent to the port of the second joint 102, and the fifth joint 105 is disposed between the fourth joint 104 and the sixth joint 106. Since the cooling fluid of the fourth joint 104 and the sixth joint 106 flows to the thermal management subsystem, and the cooling fluid of the fifth joint 105 flows to the integrated multi-way joint control valve, the fifth joint 105 is arranged between the fourth joint 104 and the sixth joint 106, so that the pressure drop at the joint can be effectively reduced, and the internal pressure stability of the multi-way joint 10 after the galvanic pile is better.
The body of the first joint 101 is provided with a sensor mounting joint 107. Specifically, the sensor mounting joint 107 is adjacent to the junction of the first joint 101, the second joint 102, and the third joint 103. The sensor mounting joint 107 is arranged at the joint adjacent to the first joint 101, the second joint 102 and the third joint 103, so that the pressure sensor mounted on the sensor mounting joint 107 can effectively detect the pressure at the joint, thereby avoiding the problem of overlarge pressure at the joint and ensuring the reliable and stable operation of the thermal management subsystem.
The connection part of the third joint 103 and the second joint 102 is provided with a connecting seat 108. Specifically, the connection seat 108 is a connection flange integrally formed with the post-stack multi-pass connector 10. The problem of leakage or even disconnection of the connection is easily caused by excessive pressure at the connection of the first joint 101, the second joint 102 and the third joint 103, such as by conventional screw or hoop connection. The flange type connecting seat 108 is connected with the connecting pipe connected with the water outlet end of the electric pile 1, so that the connection at the connecting position is more stable and reliable, and the problems are effectively avoided.
The flow control valve 7 is connected with the water outlet end of the radiator 9 through a radiator water outlet joint 12, and the second joint 102 is connected with the water inlet end of the radiator 9 through a radiator water inlet joint 13. Specifically, the radiator water outlet joint 12 is fixedly arranged on the interface of the flow control valve 7 through bolts. One end of the radiator water inlet joint 13 is connected with the second joint 102, and the other end is connected with the water inlet end of the radiator 9. The first connector 101 of the present embodiment is connected to the other valve port of the flow control valve 7 through the first connecting pipe 14, and the second connector 102 is connected to one end of the radiator water inlet connector 13 through the second connecting pipe 15. Specifically, the joints of the first joint 101, the flow control valve 7 and the first connecting pipe 14 are all in locking connection through hoops, and the joints of the second joint 102, the radiator water inlet joint 13 and the second connecting pipe 15 are all in locking connection through hoops. The first connecting pipe 14 and the second connecting pipe 15 are used for eliminating the position tolerance between the multi-way joint 10, the flow control valve 7 and the radiator water inlet joint 13 after the electric pile, so that the integrated multi-way joint control valve is convenient to arrange. Preferably, the first connection pipe 14 and the second connection pipe 15 are connection hoses. The connecting hose of the embodiment is a hose capable of rotating by 360 degrees, so that the flow control valve 7 and the radiator water inlet connector 13 connected with the multi-way connector 10 behind a galvanic pile can swing at any angle, the connecting hose is suitable for installation and arrangement requirements of different controls, and the flexibility and the applicability of the integrated multi-way connector control valve are greatly improved.
The water pump multipass joint 11 includes a seventh joint 111, an eighth joint 112, a ninth joint 113, and a tenth joint 114. The seventh joint 111 is attached to the flow control valve 7, the eighth joint 112 is connected to the other end of the cabin heater 5, the ninth joint 113 is connected to the other end of the anode heat exchanger 4, and the tenth joint 114 is connected to one end of the coolant circulation pump 6. Specifically, the seventh joint 111 is installed at the interface below the flow control valve 7, the eighth joint 112 is connected to the water outlet end of the cabin heater 5, the ninth joint 113 is connected to the water outlet end of the anode heat exchanger 4, and the tenth joint 114 is connected to the water inlet end of the coolant circulation pump 6. Compared with the prior art, the use of the water pump multi-way joint 11 further reduces the use quantity of the T-shaped joints in the thermal management subsystem, specifically reduces two joints, further improves the integration level of the thermal management subsystem, and further simplifies the arrangement of the thermal management subsystem.
Specifically, the tenth joint 114 is arranged obliquely along the axial direction of the seventh joint 111, and the eighth joint 112 and the ninth joint 113 are both located on the body of the tenth joint 114. The obliquely arranged tenth joint 114 facilitates merging the coolant flowing in from the eighth joint 112 and the ninth joint 113 with the coolant flowing in from the seventh joint 111, so that the coolant is effectively pumped by the coolant circulation pump 6. The eighth joint 112 is adjacent to the connection between the seventh joint 111 and the tenth joint 114, and the ninth joint 113 is located below the eighth joint 112. Since the flow through the anode heat exchanger 4 in the thermal management subsystem is less than the flow through the cabin heater 5, the placement of the ninth junction 113, which is connected to the anode heat exchanger 4, at the port near the tenth junction 114 is advantageous in reducing the pressure drop at the port.
A system fixing block 16 is arranged between the flow control valve 7 and the water pump multi-way joint 11. The system fixing block 16 is used for fixing the integrated multi-way joint control valve. Specifically, the system fixing block 16 is provided with a middle opening, and the end of the seventh joint 111 is inserted into the middle opening and is fixed below the flow control valve 7 by a bolt, and the system fixing block 16 is also fixed on the flow control valve 7 by a bolt. Preferably, an O-ring is disposed between the flow control valve 7 and the seventh joint 111 to better seal the junction between the flow control valve 7 and the seventh joint 111 from leakage or leakage of the coolant.
While only the preferred embodiments of the present invention have been described above, it should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present invention, and these do not affect the effect of the implementation of the present invention and the utility of the patent.

Claims (7)

1. An integrated multi-way joint control valve for a fuel cell system comprises a flow control valve (7), and is characterized in that a post-stack multi-way joint (10) and a water pump multi-way joint (11) are integrated on the flow control valve (7), the post-stack multi-way joint (10) is respectively connected with one end of a pile (1), one end of a cabin heater (5), one end of a cathode heat exchanger (3), one end of an anode heat exchanger (4) and one end of a radiator (9), and the water pump multi-way joint (11) is respectively connected with the other end of the cabin heater (5), the other end of the anode heat exchanger (4) and one end of a coolant circulating pump (6);
the rear multi-way joint (10) of the electric pile comprises a first joint (101), a second joint (102), a third joint (103), a fourth joint (104), a fifth joint (105) and a sixth joint (106), wherein the first joint (101) is connected with the water outlet end of the radiator (9) through a flow control valve (7), the second joint (102) is connected with the water inlet end of the radiator (9), the third joint (103) is connected with the water outlet end of the electric pile (1), the fourth joint (104) is connected with the water inlet end of the cabin heater (5), the fifth joint (105) is connected with the water outlet end of the cathode heat exchanger (3), and the sixth joint (106) is connected with the water inlet end of the anode heat exchanger (4);
the water pump multi-way joint (11) comprises a seventh joint (111), an eighth joint (112), a ninth joint (113) and a tenth joint (114), wherein the seventh joint (111) is arranged on the flow control valve (7), the eighth joint (112) is connected with the other end of the cabin heater (5), the ninth joint (113) is connected with the other end of the anode heat exchanger (4), and the tenth joint (114) is connected with one end of the coolant circulating pump (6).
2. An integrated multi-way joint control valve for a fuel cell system according to claim 1, wherein the body of the first joint (101) is provided with a sensor mounting joint (107).
3. An integrated multi-way joint control valve for a fuel cell system according to claim 1, characterized in that the junction of the third joint (103) and the second joint (102) is provided with a connecting seat (108).
4. An integrated multi-way joint control valve for a fuel cell system according to claim 1, characterized in that the flow control valve (7) is connected with the water outlet end of the radiator (9) through a radiator water outlet joint (12), and the second joint (102) is connected with the water inlet end of the radiator (9) through a radiator water inlet joint (13).
5. An integrated multi-way joint control valve for a fuel cell system according to claim 4, characterized in that the first joint (101) is connected to the flow control valve (7) by a first connecting pipe (14), and the second joint (102) is connected to the radiator water inlet joint (13) by a second connecting pipe (15).
6. An integrated multi-way joint control valve for a fuel cell system according to claim 5, wherein the first connecting pipe (14) and the second connecting pipe (15) are both connecting hoses.
7. An integrated multi-way joint control valve for a fuel cell system according to claim 1, characterized in that a system fixing block (16) is provided between the flow control valve (7) and the water pump multi-way joint (11).
CN201911409055.7A 2019-12-31 2019-12-31 Integrated multi-way joint control valve for fuel cell system Active CN110931822B (en)

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CN110931822B true CN110931822B (en) 2023-10-27

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