CN219303714U - Fuel cell thermal management system for hydrogen fuel cell passenger car - Google Patents
Fuel cell thermal management system for hydrogen fuel cell passenger car Download PDFInfo
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- CN219303714U CN219303714U CN202222291638.8U CN202222291638U CN219303714U CN 219303714 U CN219303714 U CN 219303714U CN 202222291638 U CN202222291638 U CN 202222291638U CN 219303714 U CN219303714 U CN 219303714U
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Abstract
The utility model discloses a fuel cell thermal management system for a hydrogen fuel cell passenger car, which comprises a main mounting frame and an auxiliary mounting frame; the main installation frame is provided with a first heat dissipation core body, an expansion water tank and a filter, a water inlet of the first heat dissipation core body is communicated with a water inlet pipe, the filter is arranged on the water inlet pipe, a water outlet of the first heat dissipation core body is communicated with a fuel cell cooling liquid inlet through a water outlet pipe, and a fuel cell cooling liquid outlet is communicated with a water pipe interface of the expansion water tank through a water pipe; the auxiliary installation frame is provided with a second heat dissipation core body, and a water inlet and a water outlet of the second heat dissipation core body are respectively communicated to a water inlet and a water outlet of the first heat dissipation core body through connecting water pipes. The utility model sets two parallel heat dissipation cores to exchange heat, and the fan forces air to flow for heat dissipation, so as to realize heat dissipation of the fuel cell; the main mounting frame, the auxiliary mounting frame and the reversible shell cover are arranged to realize protection of the fuel cell thermal management product, form modularization and facilitate maintenance.
Description
Technical Field
The utility model relates to the technical field of fuel cell temperature control, in particular to a fuel cell thermal management system for a hydrogen fuel cell passenger car.
Background
Under the background of the peak of reaching carbon in 2030 and the neutralization of carbon in 2060, the new energy bus bears more responsibility and mission, and particularly, the application of the hydrogen fuel cell bus is wider and deeper. The hydrogen fuel cell passenger car has the advantages of quick hydrogenation, long endurance mileage, no pollution and the like, but the fuel cell has the disadvantages of large heat dissipation capacity, high conductivity requirement and the like, and meanwhile, the stability and the efficiency of the fuel cell cannot be ensured due to supercooling/overheating, so that the requirement on a fuel cell thermal management system is higher and more severe. In view of this, under the circumstances that the energy utilization system is changed to realize clean and new energy traffic and the heat dissipation capacity of the fuel cell is larger and larger, it is necessary to develop a fuel cell thermal management system for a hydrogen fuel cell passenger car with the functions of efficient heat exchange, real-time monitoring of the conductivity of the heat dissipation system, precision, modularization and CAN communication.
In the field of the existing thermal management system for hydrogen fuel cell buses, the thermal management system is limited by the space structure of the whole bus, cost and other factors, and fuel cell thermal management products adopt a steel frame structure, are arranged in an outward leakage mode, have poor fineness and are low in protection.
Disclosure of Invention
In order to solve the problems, the fuel cell thermal management system for the hydrogen fuel cell passenger car has the functions of efficient heat exchange, real-time monitoring of the conductivity of a heat dissipation system, precision, modularization and CAN communication.
The object of the utility model is achieved in the following way:
the fuel cell thermal management system for the hydrogen fuel cell passenger car comprises a main mounting frame 14, a secondary mounting frame 11 and a first heat dissipation core 16, an expansion water tank 15 and a filter 10, wherein a water inlet of the first heat dissipation core is communicated with a water inlet pipe 21, the filter 10 is arranged on the water inlet pipe 21, a water outlet of the first heat dissipation core 16 is communicated with a fuel cell cooling liquid inlet through a water outlet pipe 19, and a fuel cell cooling liquid outlet is communicated with a water pipe interface of the expansion water tank 15 through a water pipe 20; the secondary installation frame 11 is provided with a second heat dissipation core 12, and a water inlet and a water outlet of the second heat dissipation core 12 are respectively communicated with a water inlet and a water outlet of the first heat dissipation core 16 through a connecting water pipe 13; the first air-overflowing interface of the expansion water tank 15 is connected with the air-overflowing opening of the first heat dissipation core 16, the second air-overflowing interface is connected with the air-overflowing opening of the second heat dissipation core 12, and the third air-overflowing interface is connected with the air-overflowing opening of the fuel cell.
The upper ends of the main mounting frame 14 and the auxiliary mounting frame 11 are respectively provided with a first shell cover and a second shell cover 3, the first shell cover on the main mounting frame 14 comprises a fixed cover 1 and a reversible cover 2, and the reversible cover 2 is fixed at one end of the fixed cover 1 through a hinge; an electric cabinet 17 and a conductivity meter 18 are arranged on the main installation frame below the reversible cover 2; the conductivity meter 18 is electrically connected with the electric cabinet through a cable; and the electric control box is in communication connection with the fuel cell ECU control unit through CAN communication.
Fans are respectively arranged at the top parts of the first heat dissipation core 16 and the second heat dissipation core 12; the fan is electrically connected with the electric cabinet through a cable.
The fan includes 6, and every heat dissipation core top all sets up 3.
The conductivity meter 18 is disposed at the fuel cell coolant inlet.
The fuel cell cooling liquid inlet and the fuel cell cooling liquid outlet are respectively provided with a first temperature sensor and a second temperature sensor, and the first temperature sensor and the second temperature sensor are respectively electrically connected with the electric cabinet through cables.
The fuel cell is provided with a water pump with adjustable water flow.
A liquid level sensor is arranged in the expansion water tank 15 and is electrically connected with the electric cabinet 17 through a cable.
The water inlet pipe 21, the water outlet pipe 19 and the water pipe 20 are all arranged on the main mounting frame 14 below the reversible cover 2.
The utility model has the beneficial effects that: compared with the prior art, the utility model has the advantages that the two parallel heat dissipation cores are arranged for heat exchange, and the fan forces air to flow for heat dissipation so as to realize heat dissipation of the fuel cell; the main installation frame, the auxiliary installation frame and the turnover shell cover are arranged to protect the fuel cell thermal management product, so that modularization is formed, and the installation and the maintenance are convenient.
Drawings
Fig. 1 is a schematic view of the overall structure of the present utility model.
FIG. 2 is a schematic diagram of the structure of the present utility model (without the cover of the housing)
Fig. 3 is a schematic diagram of a second embodiment of the present utility model (without the housing cover).
The electric control device comprises a fixed cover, a 2-turnover cover, a 3-second shell cover, a 4-fourth fan, a 5-fifth fan, a 6-sixth fan, a 7-first fan, an 8-second fan, a 9-third fan, a 10-filter, an 11-auxiliary installation frame, a 12-second heat dissipation core, a 13-connecting water pipe, a 14-main installation frame, a 15-expansion water tank, a 16-first heat dissipation core, a 17-electric control box, an 18-conductivity meter, a 19-water outlet pipe, a 20-water pipe, a 21-water inlet pipe and a 22-cable.
Detailed Description
The utility model will be described in further detail with reference to the drawings and the detailed description.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
As shown in fig. 1 to 3, a fuel cell thermal management system for a hydrogen fuel cell passenger car includes a main mounting frame 14, a sub mounting frame 11, and first and second housing covers 3 provided at upper ends of the main mounting frame 14 and the sub mounting frame 11, respectively, the main mounting frame 14 having a first heat radiation core 16, an expansion tank 15, and a filter 10 mounted thereon; the water inlet of the first heat dissipation core 16 is communicated with the water inlet pipe 21, the filter 10 is arranged on the water inlet pipe 21, the water outlet of the first heat dissipation core 16 is communicated with the fuel cell cooling liquid inlet through the water outlet pipe 19, and the fuel cell cooling liquid outlet is communicated with the water pipe interface of the expansion water tank 15 through the water pipe 20; the secondary installation frame 11 is provided with a second heat dissipation core 12, and a water inlet and a water outlet of the second heat dissipation core 12 are respectively communicated with a water inlet and a water outlet of the first heat dissipation core 16 through a connecting water pipe 13; the water outlet of the expansion water tank 15 is communicated with the connecting water pipe 13; fans are respectively arranged at the tops of the first heat dissipation core 16 and the second heat dissipation core 12; the fan is electrically connected with the electric cabinet through a cable, and the electric cabinet is in communication connection with the fuel cell through CAN.
The fans comprise 6 fans, 3 fans are arranged above each heat dissipation core, each fan comprises a first fan 7, a second fan 8 and a third fan 9 which are arranged above the first heat dissipation core, and a fourth fan 4, a fifth fan 5 and a sixth fan which are arranged above the second heat dissipation core. Through the control of the serial-parallel connection of the fans and the adjustment of the rotating speed, the energy consumption minimization, the noise minimization and the service life maximization are realized under the condition of meeting the heat dissipation requirement of the fuel cell. According to the calculation of the thermal management model, when the heat dissipation capacity required by the fuel cell is low, the fourth fan 4 and the first fan 7 operate at a low rotating speed, so that the heat dissipation requirement is met; when the heat dissipation capacity required by the fuel cell is increased by one level, the fourth fan 4, the fifth fan 5, the first fan 7 and the second fan 8 all operate at low rotation speed, so that the heat dissipation requirement is met; when the heat dissipation capacity required by the fuel cell is increased by two stages, the fourth fan 4, the fifth fan 5, the sixth fan 6, the first fan 7, the second fan 8 and the third fan 9 all operate at low rotation speeds, so that the heat dissipation requirement is met; when the heat dissipation capacity required by the fuel cell is increased by three stages, the fourth fan 4, the fifth fan 5, the sixth fan 6, the first fan 7, the second fan 8 and the third fan 9 all run at the intermediate speed, so that the heat dissipation requirement is met; when the heat dissipation capacity required by the fuel cell is increased by four stages, the fourth fan 4, the fifth fan 5, the first fan 7 and the second fan 8 all operate at high rotation speeds, so that the heat dissipation requirement is met; when the heat dissipation capacity required by the fuel cell is increased by five stages, the fourth fan 4, the fifth fan 5, the sixth fan 6, the first fan 7, the second fan 8 and the third fan 9 all operate at high rotation speeds, so that the heat dissipation requirement is met.
The water inlet of the fuel cell cooling system is provided with a conductivity meter 18, and the conductivity meter 18 is electrically connected with an electric cabinet 17 through a cable. The conductivity value of the antifreeze fluid of the system is monitored in real time by the conductivity meter of the thermal management system of the fuel cell, and when the conductivity value of the antifreeze fluid of the system is less than or equal to 5 mu S/cm, the requirements of the working resistance value of the fuel cell can be met, and the system is in a safe stage; when the conductivity value of the antifreeze fluid of the system is less than or equal to 5 mu S/cm and less than or equal to 15 mu S/cm, the basic requirement of the working resistance value of the fuel cell can be met, and the system is in a safer stage; when the conductivity value of the antifreeze fluid in the system is more than or equal to 15 mu S/cm, the basic requirement of the working resistance value of the fuel cell cannot be met, the fuel cell should stop working immediately, and the damage of the internal polar plate of the fuel cell caused by the overhigh conductivity value in the system is prevented.
The fuel cell cooling liquid inlet and the liquid outlet are respectively provided with a first temperature sensor and a second temperature sensor, and the first temperature sensor and the second temperature sensor are respectively electrically connected with the electric cabinet through cables.
The fuel cell is provided with a water pump with adjustable water flow, and the fuel cell is operated with variable flow rate. When the heat dissipation capacity required by the fuel cell is low, the fuel cell runs at a low flow rate with a water pump, so that the heat dissipation requirement is met; when the fuel cell is in a medium-grade state with heat dissipation capacity, the fuel cell runs with the flow in the water pump, so that the heat dissipation requirement is met; when the heat dissipation requirement of the fuel cell is high, the fuel cell is operated with a water pump at a large flow rate, so that the heat dissipation requirement is met.
Based on the calculation of the thermal management model, the fuel cell is provided with the water pump flow regulation and the fan operation and rotation speed coupling calculation, so that the operation noise of the thermal management system of the fuel cell is preferentially ensured to be minimized, and the heat dissipation capacity requirement of the fuel cell is realized.
A liquid level sensor is arranged in the expansion water tank 15 and is electrically connected with the electric cabinet through a cable.
The expansion tank 15 further comprises three air-overflowing interfaces, a first air-overflowing interface of the expansion tank 15 is connected with an air-overflowing opening of the first heat dissipation core 16, a second air-overflowing interface is connected with an air-overflowing opening of the second heat dissipation core 12, and a third air-overflowing interface is connected with an air-overflowing opening of the fuel cell. Expansion tank 15 provides expansion margin and vent gas bleed for the system.
The first housing cover on the main mounting frame 14 comprises a fixed cover 1 and a reversible cover 2, and the reversible cover 2 is fixed at one end of the fixed cover through a hinge; an electric cabinet 17, a conductivity meter 18 and water pipe connectors (water pipe connectors of a water inlet pipe 21, a water outlet pipe 19 and a water pipe 20) are arranged on the main installation frame below the reversible cover 2. The turnover cover 2 is turned over and opened, so that the rapid inspection and maintenance of the components such as an electric cabinet, a conductivity meter, a water pipe connector and the like of the fuel cell thermal management system can be realized.
The fuel cell thermal management system of the present utility model operates as shown in fig. 2 and 3: the special antifreeze fluid for the fuel cell enters the thermal management system through the water inlet pipe 21, the special antifreeze fluid which is subjected to heat dissipation through the first heat dissipation core 16 and the second heat dissipation core 12 of the thermal management system enters the coolant inlet of the fuel cell through the water outlet pipe 19, the antifreeze fluid in the fuel cell enters the expansion water tank 15 through the water pipe 20 for pressure regulation, and the expansion water tank 15 enters the antifreeze fluid into the first heat dissipation core 16 and the second heat dissipation core 12 through the air overflow interface. The electric control box 17 and the fuel cell mutually transmit information states in real time through CAN communication, and the electric control box 17 sends the system conductivity value detected by the conductivity meter 18 to the fuel cell, so that the conductivity in the system CAN meet the requirements. Meanwhile, the electric control box 17 receives the instruction of the fuel cell and controls the rotation speeds of the fourth fan 4, the fifth fan 5, the sixth fan 6, the first fan 7, the second fan 8 and the third fan 9 and the like.
The sub-mounting frame 11 provides mounting and fixing positions for the second heat-radiating core 12, the second housing cover 3, and the like, and the main mounting frame 14 provides mounting and fixing positions for the first heat-radiating core 16, the fixed cover 1, the reversible cover 2, the expansion tank 15, the filter 10, and the like. The special antifreeze fluid for the fuel cell circulates in the second heat dissipation core 12 to dissipate heat into air, and the fourth fan 4, the fifth fan 5 and the sixth fan 6 work to forcedly circulate air around the heat dissipation core 12 to cool the second heat dissipation core 12. Similarly, the special antifreeze for the fuel cell is connected in parallel to the inside of the first heat dissipation core 16 for circulation, heat is dissipated to the air, and the first fan 7, the second fan 8 and the third fan 9 work to forcibly circulate the air around the first heat dissipation core 16 for cooling the heat dissipation core 16.
The filter 10 filters the antifreeze for the fuel cell in the system to prevent impurities from entering the second heat dissipation core 12 and the first heat dissipation core 16. The connecting water pipe 13 is used for connecting the radiating core 12 and the radiating core 16 and transmitting the special antifreeze for the fuel cell. The expansion tank 15 is used for relieving the water amount in the system and exhausting the air in the system, and is provided with three air overflow interfaces and a water pipe interface, wherein two air overflow interfaces are connected with the air overflow ports of the heat dissipation core 12 and the heat dissipation core 16, and the other air overflow interface is connected with the air overflow port of the fuel cell.
The conductivity meter 18 monitors the conductivity value in the thermal management system in real time, and transmits the data to the electric control box 17, and the electric control box 17 data is transmitted to the fuel cell ECU control unit after being converted. The cable 22 is used for connecting the liquid level switch of the fourth fan 4, the fifth fan 5, the sixth fan 6, the first fan 7, the second fan 8, the third fan 9, the conductivity meter 18 and the expansion tank 15 to the electric cabinet.
The thermal management system CAN monitor the conductivity value in the system in real time, and transmit the conductivity value to the fuel cell through CAN communication, and control the working state of the water flow adjustable water pump of the fan fuel cell according to the inlet and outlet water temperature of the fuel cell. Meanwhile, the heat management system has a specific filtering function, and filters the special antifreezing solution for the fuel cell in the system to prevent sundries from entering the fuel cell.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that several changes and modifications can be made without departing from the general inventive concept, and these should also be regarded as the scope of the utility model.
Claims (9)
1. A fuel cell thermal management system for a hydrogen fuel cell passenger car is characterized in that: the solar energy heat pump water heater comprises a main mounting frame (14) and an auxiliary mounting frame (11), wherein a first heat dissipation core body (16), an expansion water tank (15) and a filter (10) are mounted on the main mounting frame (14), a water inlet of the first heat dissipation core body is communicated with a water inlet pipe (21), the filter (10) is mounted on the water inlet pipe (21), a water outlet of the first heat dissipation core body (16) is communicated with a fuel cell cooling liquid inlet through a water outlet pipe (19), and a fuel cell cooling liquid outlet is communicated with a water pipe interface of the expansion water tank (15) through a water pipe (20); the auxiliary installation frame (11) is provided with a second heat dissipation core body (12), and a water inlet and a water outlet of the second heat dissipation core body (12) are respectively communicated with a water inlet and a water outlet of the first heat dissipation core body (16) through a connecting water pipe (13); the first air overflow interface of the expansion water tank (15) is connected with the air overflow port of the first heat dissipation core body (16), the second air overflow interface is connected with the air overflow port of the second heat dissipation core body (12), and the third air overflow interface is connected with the air overflow port of the fuel cell.
2. A fuel cell thermal management system for a hydrogen fuel cell passenger car as defined in claim 1, wherein: the upper ends of the main mounting frame (14) and the auxiliary mounting frame (11) are respectively provided with a first shell cover and a second shell cover (3), the first shell cover on the main mounting frame (14) comprises a fixed cover (1) and a reversible cover (2), and the reversible cover (2) is fixed at one end of the fixed cover (1) through a hinge; an electric cabinet (17) and a conductivity meter (18) are arranged on the main installation frame below the reversible cover (2); the conductivity meter (18) is electrically connected with the electric cabinet through a cable; and the electric control box is in communication connection with the fuel cell ECU control unit through CAN communication.
3. A fuel cell thermal management system for a hydrogen fuel cell passenger car as defined in claim 1, wherein: fans are respectively arranged at the tops of the first radiating core body (16) and the second radiating core body (12); the fan is electrically connected with the electric cabinet through a cable.
4. A fuel cell thermal management system for a hydrogen fuel cell passenger car according to claim 3, wherein: the fan includes 6, and every heat dissipation core top all sets up 3.
5. A fuel cell thermal management system for a hydrogen fuel cell passenger car as defined in claim 2, wherein: the conductivity meter (18) is disposed at the fuel cell coolant inlet.
6. A fuel cell thermal management system for a hydrogen fuel cell passenger car as defined in claim 1, wherein: the fuel cell cooling liquid inlet and the fuel cell cooling liquid outlet are respectively provided with a first temperature sensor and a second temperature sensor, and the first temperature sensor and the second temperature sensor are respectively electrically connected with the electric cabinet through cables.
7. A fuel cell thermal management system for a hydrogen fuel cell passenger car as defined in claim 1, wherein: the fuel cell is provided with a water pump with adjustable water flow.
8. A fuel cell thermal management system for a hydrogen fuel cell passenger car as defined in claim 2, wherein: a liquid level sensor is arranged in the expansion water tank (15), and the liquid level sensor is electrically connected with the electric cabinet (17) through a cable.
9. A fuel cell thermal management system for a hydrogen fuel cell passenger car as defined in claim 2, wherein: the water pipe interfaces of the water inlet pipe (21), the water outlet pipe (19) and the water pipe (20) are all arranged on the main installation frame (14) below the turnover cover (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222291638.8U CN219303714U (en) | 2022-08-30 | 2022-08-30 | Fuel cell thermal management system for hydrogen fuel cell passenger car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222291638.8U CN219303714U (en) | 2022-08-30 | 2022-08-30 | Fuel cell thermal management system for hydrogen fuel cell passenger car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219303714U true CN219303714U (en) | 2023-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222291638.8U Active CN219303714U (en) | 2022-08-30 | 2022-08-30 | Fuel cell thermal management system for hydrogen fuel cell passenger car |
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| Country | Link |
|---|---|
| CN (1) | CN219303714U (en) |
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2022
- 2022-08-30 CN CN202222291638.8U patent/CN219303714U/en active Active
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