CN215644585U

CN215644585U - Water heat management system of hydrogen fuel cell vehicle

Info

Publication number: CN215644585U
Application number: CN202121565055.9U
Authority: CN
Inventors: 董德宝; 杨琨; 樊海梅; 熊金峰; 陈涛; 经胜博
Original assignee: King Long United Automotive Industry Suzhou Co Ltd
Current assignee: King Long United Automotive Industry Suzhou Co Ltd
Priority date: 2021-07-09
Filing date: 2021-07-09
Publication date: 2022-01-25
Anticipated expiration: 2031-07-09

Abstract

The utility model discloses a water heat management system of a hydrogen fuel cell vehicle, which comprises a fuel cell system and a control unit, wherein the fuel cell system comprises an air compressor, an intercooler, a humidifier and a galvanic pile which are sequentially connected, the outlet of the air compressor is connected with one end of a first electronic three-way valve, the other two ends of the first electronic three-way valve are respectively connected with a first air inlet pipe and a second air inlet pipe, the second air inlet pipe is connected with a gas-gas heat exchanger, the gas-gas heat exchanger is provided with a hot air inlet, a hot air outlet, a hydrogen inlet and a hydrogen outlet, the hydrogen outlet is connected with the galvanic pile, the hot air outlet is connected with a connecting pipe, the connecting pipe is provided with a first temperature sensor, and the connecting pipe is connected with one end of a second electronic three-way valve, the other two ends of the second electronic three-way valve are respectively connected with the warm air exhaust pipe and a tail exhaust branch pipe, and the tail exhaust branch pipe is connected with an outlet of the atomizer. The utility model utilizes the air at the outlet of the air compressor, is beneficial to improving the utilization rate of hydrogen and can quickly warm the whole vehicle in winter.

Description

Water heat management system of hydrogen fuel cell vehicle

Technical Field

The utility model belongs to the technical field of fuel cell vehicles, and particularly relates to a hydrothermal management system of a hydrogen fuel cell vehicle.

Background

The hydrogen fuel cell vehicle has the characteristics of cleanness and no pollution, is popularized in China in recent years, and in the using process, air and hydrogen generate electrochemical reaction in the fuel cell to generate water, electricity and heat. However, in winter, the normal operation of the hydrogen fuel cell is somewhat restricted, and firstly, in a low-temperature starting state, the hydrogen temperature is low, which affects the electrochemical reaction rate and results in a long starting time; secondly, the whole vehicle is heated by electric heating at low temperature, so that the preheating is required for a long time and the energy consumption is high. In addition, when the air temperature is low to a certain degree, liquid water discharged by the fuel cell vehicle flows to the road surface and can be frozen quickly, so that road slip is caused, certain driving risk is caused to vehicles driving behind, and even the liquid water can be frozen in the tail exhaust pipe, so that blockage is caused. Therefore, there is an urgent need for a water heating management system for a hydrogen fuel cell vehicle that can solve the above problems.

Disclosure of Invention

Aiming at the existing problems, the utility model provides a hydro-thermal management system of a hydrogen fuel cell vehicle, which utilizes air at the outlet of an air compressor according to the characteristics of high temperature and high pressure of the air at the outlet of the air compressor, is favorable for improving the utilization rate of hydrogen, can quickly warm the whole vehicle in winter, and can avoid the risk of road icing caused by the direct discharge of liquid water.

The technical scheme of the utility model is as follows:

a water heat management system of a hydrogen fuel cell vehicle comprises a fuel cell system and a control unit, wherein the fuel cell system comprises an air compressor, an intercooler, a humidifier and a galvanic pile which are sequentially connected, the humidifier is also connected with a gas-water separator, the gas-water separator is provided with an air outlet and a water outlet, the water outlet is connected with a tail water discharge pipe, and an atomizer is arranged on the tail water discharge pipe;

the exit of air compressor machine links to each other with the one end of first electron three-way valve, the other both ends of first electron three-way valve link to each other with first intake pipe and second intake pipe respectively, first intake pipe with the intercooler links to each other, the second intake pipe links to each other with gas heat exchanger, be equipped with hot air inlet, hot air outlet, hydrogen import and hydrogen export on the gas heat exchanger, the hydrogen export pass through the pipeline with the pile links to each other, hot air inlet with first intake pipe links to each other, hot air outlet links to each other with the connecting pipe, be equipped with first temperature sensor on the connecting pipe, and the connecting pipe links to each other with the one end of second electron three-way valve, the other both ends of second electron three-way valve link to each other with warm air blast pipe and tail exhaust branch pipe respectively, tail exhaust branch pipe with the exit of atomizer links to each other, wherein first electron three-way valve, The second electronic three-way valve and the first temperature sensor are electrically connected with the control unit respectively.

Preferably, the warm air blast pipe links to each other with the warm air system, the warm air system includes air-blower and warm air heater that link to each other through the pipeline, the exit of warm air heater is equipped with second temperature sensor, the exit of warm air heater still is connected with warm air exhaust manifold, the warm air blast pipe with warm air exhaust manifold links to each other, second temperature sensor with the control unit electricity is connected.

Preferably, the outlet of the atomizer is connected with a silencer through a pipeline, and the exhaust port of the gas-water separator is connected with the inlet of the silencer through a tail exhaust pipe.

Preferably, a drain electromagnetic valve is arranged on the tail drain pipe, an exhaust electromagnetic valve is arranged on the tail drain pipe, and the drain electromagnetic valve and the exhaust electromagnetic valve are respectively electrically connected with the control unit.

Preferably, a first air flow meter is arranged on the first air inlet pipe, and a second air flow meter is arranged on the second air inlet pipe.

Preferably, a hydrogen circulating pump is connected between the galvanic pile and the hydrogen outlet of the gas-gas heat exchanger.

Preferably, an air filter is connected to an inlet of the air compressor.

Preferably, an outside temperature sensor is provided outside the hydrogen fuel cell vehicle, and the outside temperature sensor is electrically connected to the control unit.

Preferably, a third temperature sensor is arranged on the first air inlet pipe, and the third temperature sensor is electrically connected with the control unit.

The utility model has the beneficial effects that:

the outlet of the air compressor is connected with a first air inlet pipe and a second air inlet pipe through a first electronic three-way valve, air with high pressure and high temperature discharged by the air compressor can enter the gas-gas heat exchanger through the second air inlet pipe to heat hydrogen to be fed into the galvanic pile, so that the utilization rate of the hydrogen is improved, air with high temperature flowing out of the gas-gas heat exchanger can enter a vehicle through a connecting pipe, a warm air exhaust pipe and a warm air exhaust main pipe, and the whole vehicle can be warmed quickly in winter; in addition, the water generated by the operation of the fuel cell system, the air and the hydrogen which do not participate in the reaction pass through the gas-water separator, and the liquid water flows into the tail drain pipe and is atomized by the atomizer, so that the risk of road icing caused by the direct discharge of the liquid water is avoided.

Drawings

The utility model is further described with reference to the following figures and examples:

fig. 1 is a schematic structural view of the present invention.

Labeled as: 1. a first electronic three-way valve; 2. a first intake pipe; 3. a second intake pipe; 4. a gas-gas heat exchanger; 5. a connecting pipe; 6. a first temperature sensor; 7. a second electronic three-way valve; 8. a warm air exhaust pipe; 9. a tail exhaust branch pipe; 10. a second temperature sensor; 11. a gas-water separator; 12. a tail drain pipe; 13. an atomizer; 14. a muffler; 15. exhausting the exhaust pipe at the tail; 16. a water discharge electromagnetic valve; 17. an exhaust solenoid valve; 18. a first air flow meter; 19. a second air flow meter; 20. an outside vehicle temperature sensor; 21. a third temperature sensor; 100. an air filter; 101. an air compressor; 102. an intercooler; 103. a humidifier; 104. a galvanic pile; 105. a PTC heater; 106. a hydrogen circulation pump; 107. a water pump; 108. a thermostat; 109. a heat sink; 110. a filter; 200. a blower; 201. a warm air heater; 202. the warm air is discharged out of the main pipe.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

As shown in fig. 1, the water heat management system of the hydrogen fuel cell vehicle comprises a fuel cell system and a control unit, wherein an external temperature sensor 20 is arranged outside the hydrogen fuel cell vehicle, and the external temperature sensor 20 is electrically connected with the control unit. The fuel cell system comprises an air compressor 101, an intercooler 102, a humidifier 103 and an electric pile 104 which are connected in sequence, the humidifier 103 is further connected with a gas-water separator 11, the gas-water separator 11 is provided with an air outlet and a water outlet, the water outlet is connected with a tail exhaust and drainage pipe 12, the tail exhaust and drainage pipe 12 is provided with an atomizer 13, the outlet of the atomizer 13 is connected with a silencer 14 through a pipeline, the air outlet of the gas-water separator 11 is connected with the inlet of the silencer 14 through a tail exhaust and drainage pipe 15, the tail exhaust and drainage pipe 12 is provided with a drainage electromagnetic valve 16, the tail exhaust and drainage pipe 15 is provided with an exhaust electromagnetic valve 17, and the drainage electromagnetic valve 16 and the exhaust electromagnetic valve 17 are respectively and electrically connected with a control unit. In the use, the gas mixture that gas-water separator 11 discharged flows through the gas vent, blows off the car with the steam after 13 atomizers of atomizer get into 14 silencers of muffler back bleeds together to can the noise abatement, also help avoiding liquid water direct discharge and lead to appearing the risk of icy road.

An inlet of an air compressor 101 is connected with an air filter 100, an outlet of the air compressor 101 is connected with one end of a first electronic three-way valve 1, the other two ends of the first electronic three-way valve 1 are respectively connected with a first air inlet pipe 2 and a second air inlet pipe 3, the first air inlet pipe 2 is provided with a first air flow meter 18 and a third temperature sensor 21, the second air inlet pipe 3 is provided with a second air flow meter 19, the first air inlet pipe 2 is connected with an intercooler 102, the second air inlet pipe 3 is connected with an air-gas heat exchanger 4, the air-gas heat exchanger 4 is provided with a hot air inlet, a hot air outlet, a hydrogen inlet and a hydrogen outlet, the hydrogen outlet is connected with a galvanic pile 104 through a pipeline, a hydrogen circulating pump 106 is connected between the galvanic pile 104 and the hydrogen outlet, the hot air inlet is connected with the first air inlet pipe 2, the hot air outlet is connected with a connecting pipe 5, the connecting pipe 5 is provided with a first temperature sensor 6, and the connecting pipe 5 is connected with one end of a second electronic three-way valve 7, the other two ends of the second electronic three-way valve 7 are respectively connected with a warm air exhaust pipe 8 and a tail exhaust branch pipe 9, the tail exhaust branch pipe 9 is connected with an outlet of an atomizer 13, and the first electronic three-way valve 1, the second electronic three-way valve 7, the first temperature sensor 6 and the third temperature sensor 21 are respectively and electrically connected with a control unit.

The warm air exhaust pipe 8 is connected with a warm air system, the warm air system comprises an air blower 200 and a warm air heater 201 which are connected through a pipeline, a second temperature sensor 10 is arranged at an outlet of the warm air heater 201, a warm air exhaust main pipe 202 is further connected at an outlet of the warm air heater 201, the warm air exhaust pipe 8 is connected with the warm air exhaust main pipe 202, and the second temperature sensor 10 is electrically connected with a control unit.

It should be noted that the fuel cell system further includes a PTC heater 105, a water pump 107, a thermostat 108, a heat sink 109, and a filter 110, the stack 104 is connected to the water pump 107, the filter 110, the heat sink 109, and the PTC heater 105 in sequence through a pipe, and the other end of the PTC heater 105 is connected to the stack 104 through a pipe.

The method for using the water heat management system of the hydrogen fuel cell vehicle of the embodiment is as follows:

(1) after the whole vehicle is started, when the ambient temperature detected by the external temperature sensor 20 is lower than a certain set temperature, the warm air heater 201 works, and the blower 200 blows air heated by the warm air heater 201 into the vehicle;

(2) when the fuel cell vehicle enters a low-temperature starting mode, the air compressor 101 starts to work, the control unit controls the first electronic three-way valve 1 to be opened, one part of high-temperature air flowing out of the air compressor 101 enters the electric pile 104 through the first air inlet pipe 2 along the intercooler 102 and the humidifier 103, and the other part of high-temperature air enters the air-gas heat exchanger 4 through the second air inlet pipe 3 and is used for heating hydrogen, so that the utilization rate of the hydrogen is improved;

(3) the fuel cell system works at low temperature, water generated during operation and air and hydrogen which do not participate in reaction are separated by the gas-water separator 11, the exhaust electromagnetic valve 17 is opened, the mixed gas enters the tail exhaust pipe 15, the water discharge electromagnetic valve 16 is opened, liquid water directly enters the tail exhaust drain pipe 12 and is atomized by the atomizer 13, and the mixed gas and water vapor atomized by the atomizer 13 enter the silencer 14 to be silenced and then are blown out of the vehicle;

(4) when the temperature detected by the second temperature sensor 10 at the outlet of the warm air heater 201 is lower than the temperature detected by the first temperature sensor 6 on the connecting pipe 5, the control unit controls the second electronic three-way valve 7 to be opened, so that the higher-temperature air flowing out of the air-gas heat exchanger 4 flows into the warm air exhaust main pipe 202 through the warm air exhaust pipe 8, is mixed with the air heated by the warm air system and is introduced into the vehicle, and the rapid vehicle warming of the whole vehicle in winter is facilitated;

(5) when the temperature detected by the second temperature sensor 10 at the outlet of the warm air heater 201 is higher than the temperature detected by the first temperature sensor 6 on the connecting pipe 5, the control unit controls the second electronic three-way valve 7 to be closed, so that the higher-temperature air flowing out through the air-gas heat exchanger 4 enters the tail exhaust branch pipe 9, then is mixed with the water vapor atomized by the atomizer 13 together with the mixed gas discharged by the gas-water separator 11, and is blown out of the vehicle after being silenced by the silencer 14.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the utility model and are not to be construed as limiting the utility model. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

1. The hydro-thermal management system of the hydrogen fuel cell vehicle is characterized by comprising a fuel cell system and a control unit, wherein the fuel cell system comprises an air compressor, an intercooler, a humidifier and a galvanic pile which are sequentially connected, the humidifier is also connected with a gas-water separator, the gas-water separator is provided with an air outlet and a water outlet, the water outlet is connected with a tail water discharge pipe, and an atomizer is arranged on the tail water discharge pipe;

2. The hydrothermal management system of a hydrogen fuel cell vehicle as claimed in claim 1, wherein the warm air exhaust pipe is connected to a warm air system, the warm air system comprises a blower and a warm air heater connected by a pipeline, a second temperature sensor is arranged at an outlet of the warm air heater, a warm air exhaust manifold is further connected to an outlet of the warm air heater, the warm air exhaust pipe is connected to the warm air exhaust manifold, and the second temperature sensor is electrically connected to the control unit.

3. The hydrothermal management system of a hydrogen fuel cell vehicle as set forth in claim 1, wherein an outlet of the atomizer is connected to a silencer through a pipe, and the exhaust port of the gas-water separator is connected to an inlet of the silencer through a tail exhaust pipe.

4. The hydrothermal management system for the hydrogen fuel cell vehicle as set forth in claim 3, wherein a drain solenoid valve is disposed on the tail drain pipe, an exhaust solenoid valve is disposed on the tail drain pipe, and the drain solenoid valve and the exhaust solenoid valve are electrically connected to the control unit, respectively.

5. The hydrothermal management system of a hydrogen fuel cell vehicle as set forth in claim 1, wherein a first air flow meter is provided on the first intake pipe, and a second air flow meter is provided on the second intake pipe.

6. The hydrothermal management system of a hydrogen fuel cell vehicle as set forth in claim 1, wherein a hydrogen circulation pump is connected between the electric stack and the hydrogen outlet of the gas-gas heat exchanger.

7. The hydrothermal management system of a hydrogen fuel cell vehicle as set forth in claim 1, wherein an air filter is connected to an inlet of the air compressor.

8. The hydrothermal management system for a hydrogen fuel cell vehicle as set forth in claim 1, wherein an external temperature sensor is provided outside the hydrogen fuel cell vehicle, and the external temperature sensor is electrically connected to the control unit.

9. The hydrothermal management system for a hydrogen fuel cell vehicle as set forth in claim 1, wherein a third temperature sensor is provided on the first air intake pipe, and the third temperature sensor is electrically connected to the control unit.