CN213660456U - Fuel cell heat dissipation system - Google Patents
Fuel cell heat dissipation system Download PDFInfo
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- CN213660456U CN213660456U CN202023021276.8U CN202023021276U CN213660456U CN 213660456 U CN213660456 U CN 213660456U CN 202023021276 U CN202023021276 U CN 202023021276U CN 213660456 U CN213660456 U CN 213660456U
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
The utility model provides a fuel cell cooling system, it includes: the cooling system comprises a cooling pipeline and a cooling radiator arranged on the cooling pipeline, and the cooling pipeline extends to the electric pile of the fuel cell and is used for cooling the electric pile; the cooling radiator comprises a cold source pipeline and a heat exchange pipeline which exchange heat with each other, and the heat exchange pipeline is connected with the cooling system; the air system comprises an air supply system and an air exhaust system, and the air supply system and the air exhaust system are connected through a fuel cell stack; the air exhaust system comprises an expander, and the expander is connected with a cold source pipeline in the cooling radiator through an exhaust pipe. The utility model discloses utilize the high velocity air after the expander cooling to come for the cooling radiator cooling, increased the biggest heat-sinking capability of system, reduced the fan consumption, further improved fuel cell system's efficiency and maximum output.
Description
Technical Field
The utility model relates to a battery cooling system especially relates to a fuel cell cooling system.
Background
The fuel cell is a device for directly converting chemical energy of fuel into electric energy, can continuously output the electric energy only by introducing the fuel and oxidant, has the advantages of high energy conversion rate, cleanness, environmental protection and no need of charging, and has become an important direction for the development of new energy automobiles due to the characteristics of long endurance and short hydrogenation time of fuel cell automobiles.
The electrical efficiency of a fuel cell is generally 50%, which means that 1KW of electricity is generated each time, and a large amount of generated heat must be taken away in time by a coolant to keep the temperature inside the fuel cell stable, otherwise the electrochemical reaction rate is affected and the life of the fuel cell is affected. In the prior art, the cooling liquid circulates to the outside of the galvanic pile after taking away the temperature inside the galvanic pile, the cooling of the cooling liquid is realized through heat exchange between a radiator (such as an air cooling fan) and the environment, a new air cooling fan needs to be added for realizing higher battery efficiency and output power, and the energy consumption of the air cooling fan is higher.
Therefore, a fuel cell heat dissipation system with low power consumption and high heat dissipation efficiency is needed.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned shortcomings of the prior art, the present invention is directed to a heat dissipation system for a fuel cell, which is used to increase the maximum heat dissipation capability of the system, reduce the power consumption of the fan, and further improve the efficiency and maximum output power of the fuel cell system.
To achieve the above and other related objects, the present invention provides a fuel cell heat dissipation system, which includes:
the cooling system comprises a cooling pipeline and a cooling radiator arranged on the cooling pipeline, and the cooling pipeline extends to the electric pile of the fuel cell and is used for cooling the electric pile; the cooling radiator comprises a cold source pipeline and a heat exchange pipeline which exchange heat with each other, and the heat exchange pipeline is connected with the cooling pipeline;
the air system comprises an air supply system and an air exhaust system, and the air supply system and the air exhaust system are connected through a fuel cell stack;
the air exhaust system comprises an expander, and the expander is connected with a cold source pipeline in the cooling radiator through an exhaust pipe.
As described above, the utility model discloses a fuel cell cooling system has following beneficial effect: the air supply system outputs air to the galvanic pile, oxygen in the air and hydrogen generate electrochemical reaction at the galvanic pile to generate electric quantity, and exhaust gas is discharged through the air exhaust system; along with the generation of electric quantity, a large amount of heat is also generated, in order to keep the stability and the safety of the electric pile, the fuel cell heat dissipation system exchanges heat with the outside through a cooling system to transfer the heat of the electric pile out, and in order to better realize the heat exchange, the cooling radiator is arranged in the cooling pipeline; the cooling radiator is connected with the cooling pipeline through the heat exchange pipeline, the cooling liquid flows through the cooling radiator and carries out heat exchange at the cooling radiator, the cold source pipeline is connected with the exhaust pipe, and the cooling radiator is cooled by utilizing high-speed airflow after expansion and cooling of the expansion machine. The utility model discloses a fuel cell cooling system is through utilizing the high velocity air after the expander cooling to come for the cooling radiator cooling, has increased the biggest heat-sinking capability of system, reduces the fan consumption, further improves fuel cell system's efficiency and maximum output.
Preferably, the cooling system further comprises a main radiator, the cooling radiator and the main radiator are arranged in series in the cooling system, the main radiator further improves the heat dissipation capacity of the fuel cell heat dissipation system, and the series arrangement is used for facilitating installation and maintenance.
Preferably, the fuel cell heat dissipation system further comprises a controller, temperature sensors arranged at the inlet and the outlet of the electric pile, and a temperature regulating valve arranged on the cooling pipeline, wherein the temperature sensors and the temperature regulating valve are both connected with the controller. When the low-temperature starting is carried out, the temperature sensor detects that the inlet or the outlet of the galvanic pile is low temperature, the controller controls the temperature regulating valve to close a passage of cooling liquid flowing to the main radiator and the cooling radiator, and opens a passage of the cooling liquid directly leading to the galvanic pile, so that small circulation of the cooling liquid is realized, namely the cooling liquid does not pass through the cooling radiator, and the expander normally operates at the moment and does not play a role in auxiliary heat dissipation; when the temperature sensor detects that the temperature reaches the preset temperature, the controller controls the temperature adjusting valve to gradually close a passage through which the cooling liquid directly flows to the galvanic pile, and opens a passage through which the cooling liquid flows to the main radiator and the cooling radiator, so that the large circulation of the cooling liquid is realized, the cooling liquid passes through the cooling radiator, and the expansion machine normally operates at the moment, so that the auxiliary heat dissipation effect can be achieved.
Preferably, the cooling system further comprises a main radiator, and the cooling radiator is arranged in the cooling pipeline in parallel with the main radiator, so that the inlet water temperature of the main radiator cannot be reduced by the cooling radiator, and the heat dissipation capacity of the main radiator can be better utilized.
Preferably, the fuel cell heat dissipation system further includes a controller, temperature sensors disposed at the inlet and the outlet of the stack, and a control valve disposed on a cooling branch connected to the cooling radiator, the control valve being configured to control the flow rate of the cooling fluid in the heat exchange pipeline, and both the temperature sensors and the control valve being connected to the controller. When the temperature detected by the temperature sensor deviates from a set standard value, the flow passing through the main radiator and the cooling radiator can be distributed by adjusting the flow of the control valve, so that the heat dissipation efficiency of the heat dissipation system is adjusted, and the purpose of controlling the temperature of the inlet and the outlet of the galvanic pile is achieved.
Preferably, the air treatment assembly is connected with the air compression assembly through a heat exchanger, the air system further comprises a heat exchanger, the heat exchanger comprises two independent pipelines, and one of the two independent pipelines is communicated with the air supply system; the other air exhaust system is communicated with the air exhaust system and is arranged between the electric pile and the expansion machine; the heat exchanger also comprises a cooling medium, and the high-temperature gas in the two pipelines can exchange heat with the cooling medium in the heat exchanger; it is also possible to directly perform gas-gas heat exchange from line to line with each other.
Drawings
Fig. 1 is a schematic diagram illustrating a main radiator and a cooling radiator connected in series in a battery cooling system according to the present invention.
Fig. 2 is a schematic diagram illustrating a main radiator and a cooling radiator of a battery cooling system according to the present invention.
Description of the element reference numerals
1 air system
11 air filter
12 air compressor
13 expander
14 heat exchanger
15 intercooler
16 humidifier
17 air inlet valve
18 exhaust valve
2 Cooling System
21 temperature regulating valve
22 main radiator
23 Cooling fan
24 cooling radiator
3 electric pile
4 hydrogen supply system
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
Please refer to fig. 1 and fig. 2. It should be understood that the structures, ratios, sizes, etc. shown in the drawings of the present specification are only used for matching with the contents disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any modification of the structures, changes of the ratio relationship, or adjustment of the sizes should still fall within the scope covered by the technical contents disclosed in the present invention without affecting the efficacy and the achievable purpose of the present invention. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
As shown in fig. 1 and 2, the present invention mainly provides a fuel cell heat dissipation system, which includes:
the cooling system 2 comprises a cooling pipeline and a cooling radiator 24 arranged on the cooling pipeline, and the cooling pipeline extends to the fuel cell stack 3 and is used for cooling the fuel cell stack 3; the cooling radiator 24 comprises a cold source pipeline and a heat exchange pipeline which exchange heat with each other, and the heat exchange pipeline is connected with the cooling pipeline;
the air system 1 comprises an air supply system and an air exhaust system, wherein the air supply system is connected with the air exhaust system through a fuel cell stack 3;
the air exhaust system comprises an expander 13, and the expander 13 is connected with a cold source pipeline in the cooling radiator 24 through an exhaust pipe.
In the embodiment, the air supply system outputs air to the galvanic pile 3, oxygen in the air and hydrogen delivered by the hydrogen supply system 4 generate electrochemical reaction at the galvanic pile 3 to generate electricity, and exhaust gas is discharged through the air exhaust system; along with the generation of electric quantity, a large amount of heat is also generated, in order to keep the stability and the safety of the electric pile 3, the fuel cell heat dissipation system exchanges heat with the outside through the cooling system 2 to transfer the heat of the electric pile 3 out, and in order to better realize the heat exchange, a cooling radiator 24 is arranged in a cooling pipeline; the cooling radiator 24 is connected with the cooling pipeline through a heat exchange pipeline, cooling liquid flows through the cooling radiator 24 and carries out heat exchange at the cooling radiator 24, the cooling radiator is connected with the exhaust pipe through a cold source pipeline, and the cooling radiator 24 is cooled by high-speed airflow expanded and cooled by the expander 13.
In the present embodiment, as shown in fig. 1 or fig. 2, the air supply system includes an air filter 11, a compressor 12, an intercooler 15 and a humidifier 16, which are connected in sequence; the hollow filter 11 is used for filtering impurities in the air; the compressor 12 provides compressed air, the intercooler 15 is used for cooling the compressed air, and the humidifier 16 is used for increasing the humidity of the compressed air; the air which is sequentially filtered, compressed, cooled and humidified is delivered to the electric pile 3 and participates in the electrochemical reaction. Further, a supercharger may be disposed before the intercooler 15 and the humidifier 16 to supercharge the compressed air, so as to further meet different requirements of different electric stacks 3 on the compressed air.
In the present embodiment, as shown in fig. 1 or fig. 2, the cooling system 2 further includes a main radiator 22, and the cooling radiator 24 and the main radiator 22 are arranged in series in the cooling pipeline, as shown in fig. 1, the cooling liquid flows through the cooling radiator 24 and then flows through the main radiator 22, so that the heat dissipation capability of the cooling radiator 24 can be better utilized; alternatively, the cooling fluid may flow through the primary radiator 22 before flowing through the cooling radiator 24.
Further, as shown in fig. 1, the fuel cell heat dissipation system further includes a controller, temperature sensors disposed at the inlet and outlet of the stack 3, and a temperature regulating valve 21 disposed on the cooling pipeline, wherein the temperature sensors and the temperature regulating valve 21 are both connected to the controller. When the electric pile is started at a low temperature, the temperature sensor detects that the inlet or the outlet of the electric pile 3 is at the low temperature, the controller controls the temperature adjusting valve 21 to close a passage of the cooling liquid flowing to the main radiator 22 and the cooling radiator 24, and opens a passage of the cooling liquid directly leading to the electric pile 3, so that small circulation of the cooling liquid is realized, namely the cooling liquid does not pass through the cooling radiator 24, and at the moment, the expander 13 normally operates and does not play a role in auxiliary heat dissipation; when the temperature sensor detects that the inlet temperature and the outlet temperature of the galvanic pile 3 reach preset temperatures, the controller controls the temperature adjusting valve 21 to gradually close a passage through which the cooling liquid directly flows to the galvanic pile 3, and opens a passage through which the cooling liquid flows to the main radiator 22 and the cooling radiator 24, so that the large circulation of the cooling liquid is realized, the cooling liquid passes through the cooling radiator 24, and the expander 13 normally operates at the moment, so that the auxiliary heat dissipation effect can be achieved. The thermostat valve 21 in this embodiment may use a three-way valve.
As another embodiment, as shown in fig. 2, the cooling radiator 24 and the main radiator 22 may be disposed in parallel in the cooling line, because the inlet water temperature of the main radiator 22 and the cooling radiator 24 is not lowered by the cooling radiator 24, the heat dissipation capacity of the main radiator 22 and the cooling radiator 24 may be better utilized. In this embodiment, preferably, the fuel cell heat dissipation system further includes a controller, temperature sensors disposed at the inlet and the outlet of the stack 3, and a control valve disposed on the cooling branch connected to the cooling radiator 24, where the control valve is used to control the flow rate of the cooling liquid in the heat exchange pipeline, and both the temperature sensors and the control valve are connected to the controller. When the temperature detected by the temperature sensor deviates from a set standard value, the flow passing through the main radiator 22 and the cooling radiator 24 can be distributed by adjusting the flow of the control valve, so that the heat dissipation efficiency of the heat dissipation system is adjusted, and the purpose of controlling the temperature of the inlet and the outlet of the galvanic pile 3 is achieved; similarly, the control valve can be installed on the cooling branch connected to the main radiator 22, and the same technical effect can be obtained.
In the above embodiments, the main radiator 22 is further provided with a cooling fan 23 for accelerating heat exchange, as shown in fig. 1 or fig. 2.
Still further, as shown in fig. 1 or fig. 2, the air processing assembly is connected to the air compression assembly through a heat exchanger 14, the air system 1 further includes the heat exchanger 14, the heat exchanger 14 includes two independent pipelines, one of which is communicated with the air supply system; the other air exhaust system is communicated with the air exhaust system and arranged between the electric pile 3 and the expander 13; the heat exchanger 14 in the present embodiment is provided between the compressor 12 and the intercooler 15 in the air supply system; the heat exchanger 14 also comprises a cooling medium, and the high-temperature gas in the two pipelines can exchange heat with the cooling medium in the heat exchanger 14, and can also directly exchange gas-gas heat between the pipelines; in this embodiment, deionized water may be used as the cooling medium.
In the present embodiment, as shown in fig. 1 or fig. 2, an intake valve 17 is disposed between the air supply system and the stack 3, an exhaust valve 18 is disposed between the stack 3 and the air exhaust system, and the intake valve 17 and the exhaust valve 18 are used to ensure the sealing of the air circuit of the stack 3 after shutdown.
To sum up, the utility model discloses, high-speed air current after through utilizing expander 13 to cool down comes for cooling radiator 24 and cools down, has increased the biggest heat-sinking capability of system, reduces the fan consumption, further improves fuel cell system's efficiency and maximum output. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (6)
1. A fuel cell heat removal system, comprising:
the cooling system comprises a cooling pipeline and a cooling radiator arranged on the cooling pipeline, and the cooling pipeline extends to the electric pile of the fuel cell and is used for cooling the electric pile; the cooling radiator comprises a cold source pipeline and a heat exchange pipeline which exchange heat with each other, and the heat exchange pipeline is connected with the cooling system;
the air system comprises an air supply system and an air exhaust system, and the air supply system and the air exhaust system are connected through a fuel cell stack;
the air exhaust system comprises an expander, and the expander is connected with a cold source pipeline in the cooling radiator through an exhaust pipe.
2. A fuel cell heat dissipation system as defined in claim 1, wherein: the cooling system further includes a main radiator, the cooling radiator being disposed in series with the main radiator in the cooling system.
3. A fuel cell heat dissipation system as defined in claim 2, wherein: the fuel cell heat dissipation system further comprises a controller, temperature sensors arranged at the inlet and the outlet of the galvanic pile, and a temperature regulating valve arranged on the cooling pipeline, wherein the temperature sensors and the temperature regulating valve are connected with the controller.
4. A fuel cell heat dissipation system as defined in claim 1, wherein: the cooling system further includes a main radiator, and the cooling radiator is provided in the cooling system in parallel with the main radiator.
5. The fuel cell heat dissipation system according to claim 4, wherein: the fuel cell heat dissipation system further comprises a controller, temperature sensors arranged at the inlet and the outlet of the electric pile, and a control valve arranged on a cooling branch connected with the cooling radiator, wherein the control valve is used for controlling the flow of cooling liquid in the heat exchange pipeline, and the temperature sensors and the control valve are connected with the controller.
6. A fuel cell heat dissipation system as defined in claim 1, wherein: the air system also comprises a heat exchanger, the heat exchanger comprises two independent pipelines, and one of the two independent pipelines is communicated with the air supply system; and the other air exhaust system is communicated with the air exhaust system and is arranged between the electric pile and the expander.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023021276.8U CN213660456U (en) | 2020-12-15 | 2020-12-15 | Fuel cell heat dissipation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023021276.8U CN213660456U (en) | 2020-12-15 | 2020-12-15 | Fuel cell heat dissipation system |
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| Publication Number | Publication Date |
|---|---|
| CN213660456U true CN213660456U (en) | 2021-07-09 |
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| CN202023021276.8U Active CN213660456U (en) | 2020-12-15 | 2020-12-15 | Fuel cell heat dissipation system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113809355A (en) * | 2021-09-17 | 2021-12-17 | 烟台东德实业有限公司 | Fuel cell circulating water cooling system using expander outlet cold air |
| CN113809356A (en) * | 2021-09-17 | 2021-12-17 | 烟台东德实业有限公司 | Energy-saving fuel cell thermal management system |
| CN114678573A (en) * | 2022-04-12 | 2022-06-28 | 大洋电机燃料电池科技(中山)有限公司 | Fuel cell system with energy recovery function and control method |
| CN116072919A (en) * | 2023-01-28 | 2023-05-05 | 深圳市氢蓝时代动力科技有限公司 | Fuel cell thermal management system |
-
2020
- 2020-12-15 CN CN202023021276.8U patent/CN213660456U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113809355A (en) * | 2021-09-17 | 2021-12-17 | 烟台东德实业有限公司 | Fuel cell circulating water cooling system using expander outlet cold air |
| CN113809356A (en) * | 2021-09-17 | 2021-12-17 | 烟台东德实业有限公司 | Energy-saving fuel cell thermal management system |
| CN114678573A (en) * | 2022-04-12 | 2022-06-28 | 大洋电机燃料电池科技(中山)有限公司 | Fuel cell system with energy recovery function and control method |
| CN116072919A (en) * | 2023-01-28 | 2023-05-05 | 深圳市氢蓝时代动力科技有限公司 | Fuel cell thermal management system |
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