CN217983414U - Fuel cell system for optimizing heat utilization - Google Patents
Fuel cell system for optimizing heat utilization Download PDFInfo
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- CN217983414U CN217983414U CN202222147493.4U CN202222147493U CN217983414U CN 217983414 U CN217983414 U CN 217983414U CN 202222147493 U CN202222147493 U CN 202222147493U CN 217983414 U CN217983414 U CN 217983414U
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Abstract
The utility model discloses an optimize fuel cell system that heat utilized, fuel cell system includes the pile and provides the air subsystem of air and carries out hydrothermal management's hydrothermal subsystem to the pile, a serial communication port, the air subsystem includes the air inlet passage with air transport pile, with gaseous air outlet passage from pile output, and connect in air compressor machine on the air inlet passage, on the air inlet passage in the air compressor machine with intercooler and first air throttle have connected gradually between the pile, air compressor machine driving air warp behind the intercooler heat exchange, through first air throttle gets into the pile, the intercooler even inserts hydrothermal subsystem is in order to participate in hydrothermal management.
Description
Technical Field
The utility model relates to a fuel cell technical field especially relates to a optimize heat utilization's fuel cell system.
Background
The fuel cell has an air subsystem for supplying air to the stack, and the air subsystem usually includes an air compressor, and the air compressor compresses the air to apply work and inputs the air into the stack. Because of the need to carry out temperature control to the high temperature compressed air that the air compressor produced, still be provided with the intercooler in the air subsystem often. The heat of the intercooler and the heat after air exchange in the prior art cannot be effectively utilized. In addition, as in the scheme disclosed in chinese patent publication No. CN114824365A, an expander warm-up scheme is adopted, but in the prior art, in the expander warm-up process, heat generated by the air compressor is not effectively utilized, which results in energy waste.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome prior art's defect, provide a fuel cell system who optimizes heat utilization.
The utility model discloses a following technical scheme realizes: the utility model provides an optimize fuel cell system that heat utilized, fuel cell system includes the pile and provides the air subsystem of air and carries out hydrothermal management's hydrothermal subsystem to the pile, the air subsystem includes the route of admitting air of air input pile, with the route of giving vent to anger of gaseous follow pile output, and connect in air compressor machine on the route of admitting air, admit air on the route in the air compressor machine with intercooler and first throttle valve have connected gradually between the pile, air compressor machine drive air warp behind the intercooler heat exchange, through first throttle valve gets into the pile, the intercooler links to access hydrothermal subsystem is in order to participate in hydrothermal management.
Optionally, the air compressor machine including connect in admit air the route press the end with connect in give vent to anger the vortex end of route, the electric pile with be connected with the second throttle valve between the vortex end of air compressor machine, the air subsystem still including connect in admit air the route with give vent to anger the bypass branch road between the route, the bypass branch road is connected the last one end in the route of admitting air is located the intercooler with between the first throttle valve, the bypass branch road is connected one end in the route of giving vent to anger is located the second throttle valve with between the vortex end of air compressor machine, be equipped with the third throttle valve on the bypass branch road.
Alternatively, the on-off of the first throttle valve, the second throttle valve and the third throttle valve can be controlled independently.
Optionally, the hydrothermal subsystem comprises a four-way valve, the four-way valve comprises two inlet ends and two outlet ends, and the intercooler is connected to one of the inlet ends of the four-way valve.
Optionally, the hydrothermal subsystem includes a deionizer, the intercooler is connected in parallel with the deionizer, the inlet ends of the intercooler and the deionizer are connected to the inlet of the liquid circulation loop before entering the electric reactor, and the outlet ends of the intercooler and the deionizer are connected to one inlet end of the four-way valve.
Optionally, the hydrothermal subsystem includes a radiator branch and a bypass loop correspondingly connected to two outlet ends of the four-way valve, and the intercooler may form water circulation through the bypass loop and/or form water circulation through the radiator branch.
Optionally, the hydrothermal subsystem includes a first throttle valve in series with the intercooler.
Optionally, the hydrothermal subsystem comprises a second throttling valve in series with the deionizer.
Optionally, the air subsystem has a bypass warm-up state in which the first throttle valve and the second throttle valve are closed and the third throttle valve is opened, and high-temperature air generated by the operation of the air compressor in the bypass warm-up state heats the vortex end of the air compressor through the bypass branch;
the air subsystem has a warm mixing state that the first throttle valve, the second throttle valve and the third throttle valve are all opened, and in the warm mixing state, part of high-temperature air generated by the operation of the air compressor passes through the electric pile, part of high-temperature air passes through the bypass branch and is mixed in front of the vortex end of the air compressor to heat the vortex end;
and in the bypass warm-up state or the mixed warm-up state, the high-temperature air exchanges heat with the intercooler and the water heating subsystem.
Optionally, the air subsystem further includes an integrated temperature and pressure sensor connected to one end of the bypass branch on the air inlet passage, a stack outlet temperature sensor connected to an outlet of the electric stack, and a pre-vortex pressure sensor connected to the air outlet passage near a vortex end of the air compressor.
The application provides a optimize fuel cell system of heat utilization, fuel cell system includes the pile and provides the air subsystem of air and carries out hydrothermal management's hydrothermal subsystem to the pile, the intercooler that air subsystem includes links in hydrothermal subsystem is in order to participate in hydrothermal management, can promote heat utilization.
Drawings
Fig. 1 is a schematic view of system connection of a fuel cell system of the present application.
Fig. 2 is a schematic diagram of the connections of the air subsystem of the fuel cell system of the present application.
The reference numbers are as follows: 10-an air subsystem; 1-electric pile; 11-an intake passage; 12-an outlet passage; 13-a bypass branch; 2, an air compressor; 201-pressing end; 202-vortex end; 3, an intercooler; 4-a water separator; 51-a first throttle; 52-a second throttle valve; 53-third throttle; 20-a hydrothermal subsystem; 21-a four-way valve; 22-a deionizer; 23-radiator branch; 24-a bypass circuit; 25-a first throttle valve; 26-second throttle valve.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The technical solution in the embodiment of the present invention is clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiments of the present invention, but not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.
As shown in fig. 1 and 2, the present application provides a fuel cell system for optimizing heat utilization, which includes a stack 1, an air subsystem 10 for supplying air to the stack 1, and a water heating subsystem 20 for performing water heat management on the stack 1. The air subsystem 10 includes the inlet channel 11 that sends the air into the galvanic pile, the outlet channel 12 of exporting gas from galvanic pile 2 output, and connect in air compressor machine 2 on the inlet channel 11, inlet channel 11 go up in air compressor machine 2 with connect gradually intercooler 3 and first throttle 51 between galvanic pile 1, air compressor machine 2 drive air through after the heat exchange of intercooler 3, through first throttle 51 gets into galvanic pile 1, intercooler 3 connects into hydrothermal subsystem 20 is in order to participate in hydrothermal management. The intercooler 3 in the hydrothermal subsystem 20 is the same intercooler as the intercooler 3 in the air subsystem 10 as shown in fig. 1.
The air subsystem 10 is used to drive air flow through the fuel cell stack 1. In the present embodiment, the air subsystem 10 includes an air inlet passage 11 for delivering air into the cell stack 1, an air outlet passage 12 for outputting air from the cell stack 1, and an air compressor 2 connected to the air inlet passage 11 and the air outlet passage 12. The pressure end 201 of the air compressor 2 is connected with the air inlet passage 11, and the vortex end 202 of the air compressor 2 is connected with the air outlet passage 12. A first throttle valve 51 is connected to the air inlet path 11 between a pressure end 201 of the air compressor 2 and the electric pile 1, and a second throttle valve 52 is connected to the air outlet path 12 between the electric pile 1 and a vortex end 202 of the air compressor 2. The air subsystem further comprises a bypass branch 13 connected between the air inlet passage 11 and the air outlet passage 12, one end of the bypass branch 13 connected to the air inlet passage 11 is located between a pressure end 201 of the air compressor 2 and the first throttle valve 51, one end of the bypass branch 13 connected to the air outlet passage 12 is located between the second throttle valve 52 and a vortex end 202 of the air compressor 2, and a third throttle valve 53 is arranged on the bypass branch 13.
In one embodiment, the on/off of the first throttle 51, the second throttle 52 and the third throttle 53 can be independently controlled. Therefore, the on-off and opening size of the bypass branch 13 and the on-off and opening size of the air passage passing through the galvanic pile 1 are not influenced.
Further, the intercooler 3 is connected between the pressure end 201 of the air compressor 2 and one end of the bypass branch 13 located in the intake passage 11. The intercooler 3 is connected in a hydrothermal system of the fuel cell, and can exchange heat with the hydrothermal system, so that the energy utilization rate is improved. The intercooler 3 is disposed at the front side of the bypass branch 13, so that when the air subsystem only operates the bypass warming-up mode, heat exchange can be formed between the intercooler 3 and the air subsystem, and heat can participate in the operation of the hydrothermal system.
The hydrothermal subsystem 20 comprises a four-way valve 21, the four-way valve 21 comprises two inlet ends and two outlet ends, and the intercooler 3 is connected to one of the inlet ends of the four-way valve. The hydrothermal subsystem 10 comprises a deionizer 22, the intercooler 3 is connected with the deionizer 22 in parallel, the inlet ends of the intercooler 3 and the deionizer 22 are connected with the inlet of the liquid circulation loop before entering the galvanic pile 1, and the outlet ends of the intercooler 3 and the deionizer 22 are connected with one inlet end of the four-way valve 21. The hydrothermal subsystem 20 comprises a radiator branch 23 and a bypass loop 24 correspondingly connected with two outlet ends of the four-way valve 21, and the intercooler 3 can form water circulation through the bypass loop 24 and/or form water circulation through the radiator branch 23. The hydrothermal subsystem 20 comprises a first throttle 25 in series with the intercooler 3 and a second throttle 26 in series with the deionizer 22.
As shown in fig. 1, a pre-vortex temperature sensor T23 is disposed on the outlet passage 12 near the vortex end 202 of the air compressor 2, and the air subsystem further includes a temperature and pressure integrated sensor P & T22 connected to one end of the bypass branch 13 on the inlet passage 11, a stack outlet temperature sensor T28 connected to the outlet of the stack 1, and a pre-vortex pressure sensor P23 connected to the outlet passage 12 near the vortex end 202 of the air compressor 2. The sensors are used for detecting the operation condition of the air subsystem, and the controller controls the operation mode of the air subsystem according to the data detected by the sensors. The air outlet passage 12 is further connected with a water separator 4, and the water separator 4 is connected between the vortex end 202 of the air compressor 2 and one end of the bypass branch 13 located on the air outlet passage 12.
The air subsystem of the fuel cell battery provided by the application has the following bypass warm-up state, warm-mixing state and normal air supply state for closing the bypass.
In the bypass warm-up state, the first throttle valve 51 and the second throttle valve 52 are closed, and the third throttle valve 53 is opened, and in the bypass warm-up state, the high-temperature air generated by the operation of the air compressor 2 heats the vortex end 202 of the air compressor 2 through the bypass branch 13.
The warm mixing state is a state in which the first throttle valve 51, the second throttle valve 52 and the third throttle valve 53 are all opened, and in the warm mixing state, a part of high-temperature air generated by the operation of the air compressor 2 passes through the stack 1, a part of high-temperature air passes through the bypass branch 13, and is mixed in front of the vortex end 202 of the air compressor 2 to heat the vortex end 202.
The opening degree of the third throttle valve 53 in the bypass warm-up state is not larger than the opening degree of the third throttle valve 53 in the warm-up mixture state. Under the bypass warm-up state, the rotating speed of the air compressor 2 is fixed at a high rotating speed as much as possible, the third throttle valve 53 is opened, the first throttle valve and the second throttle valve are kept closed, the opening degree of the third throttle valve 53 is reduced to be as small as possible (so that the working area of the air compressor 2 is close to a surge area, surge is not triggered), the working efficiency is reduced as much as possible, and therefore heat production is maximized.
The normal air supply state in which the bypass is turned off is that the first throttle valve 51 and the second throttle valve 52 are opened and the third throttle valve 53 is turned off so that the compressed air is normally operated through the stack 1.
According to the fuel cell system for optimizing heat utilization, the fuel cell system comprises an electric pile, an air subsystem for providing air for the electric pile and a hydrothermal subsystem for performing hydrothermal management on the electric pile, an intercooler of the air subsystem is connected into the hydrothermal subsystem to participate in the hydrothermal management, and the heat utilization rate can be improved; and the setting of intercooler position makes air subsystem operation under three kinds of states, and the intercooler all can participate in the heat exchange, has further guaranteed the utilization of intercooler and air heat exchange back heat.
While the invention has been described with reference to several embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (10)
1. The utility model provides an optimize fuel cell system that heat utilized, fuel cell system includes the pile and provides the air subsystem of air and carries out hydrothermal management's hydrothermal subsystem to the pile, its characterized in that, the air subsystem includes the air inlet passage who delivers into the pile with the air, with the passageway of giving vent to anger of gaseous follow pile output, and connect in air compressor machine on the air inlet passage, the air inlet passage on in the air compressor machine with intercooler and first throttle valve have connected gradually between the pile, air compressor machine drive air warp behind the intercooler heat exchange, through first throttle valve gets into the pile, the intercooler links into hydrothermal subsystem is in order to participate in hydrothermal management.
2. The fuel cell system for optimizing heat utilization according to claim 1, wherein the air compressor includes a pressure end connected to the air inlet passage and a vortex end connected to the air outlet passage, a second throttle valve is connected between the stack and the vortex end of the air compressor, the air subsystem further includes a bypass branch connected between the air inlet passage and the air outlet passage, one end of the bypass branch connected to the air inlet passage is located between the intercooler and the first throttle valve, one end of the bypass branch connected to the air outlet passage is located between the second throttle valve and the vortex end of the air compressor, and a third throttle valve is disposed on the bypass branch.
3. The fuel cell system for optimizing heat utilization according to claim 2, wherein the first throttle valve, the second throttle valve, and the third throttle valve are each independently controllable in on-off.
4. The fuel cell system for optimizing heat utilization according to claim 1, wherein the hydrothermal subsystem includes a four-way valve having two inlet ends and two outlet ends, and the intercooler is connected to one of the inlet ends of the four-way valve.
5. The fuel cell system for optimizing heat utilization according to claim 4, wherein the hydrothermal subsystem includes a deionizer, the intercooler is connected in parallel with the deionizer, the inlet ends of the intercooler and the deionizer are connected to the inlet of the liquid circulation loop before entering the cell stack, and the outlet ends of the intercooler and the deionizer are connected to one inlet end of the four-way valve.
6. The fuel cell system for optimizing heat utilization according to claim 4, wherein the hydrothermal subsystem includes a radiator branch and a bypass circuit correspondingly connected to both outlet ends of the four-way valve, and the intercooler is configured to circulate water through the bypass circuit and/or through the radiator branch.
7. The fuel cell system with optimized heat utilization of claim 5, wherein the hydrothermal subsystem includes a first throttle valve in series with the intercooler.
8. The fuel cell system for optimizing heat utilization according to claim 7, wherein the hydrothermal subsystem includes a second throttle valve in series with the deionizer.
9. The fuel cell system for optimizing heat utilization according to claim 3, wherein the air subsystem has a bypass warm-up state in which the first throttle valve and the second throttle valve are off and the third throttle valve is open, and in the bypass warm-up state, high-temperature air generated by operation of an air compressor heats an eddy end of the air compressor through the bypass branch;
the air subsystem has a warm mixing state that the first throttle valve, the second throttle valve and the third throttle valve are all opened, and in the warm mixing state, part of high-temperature air generated by the operation of the air compressor passes through the electric pile, part of high-temperature air passes through the bypass branch and is mixed in front of the vortex end of the air compressor to heat the vortex end;
and in the bypass warm-up state or the mixed warm-up state, the high-temperature air exchanges heat with the intercooler and the water heating subsystem.
10. The fuel cell system for optimizing heat utilization according to claim 2, wherein the air subsystem further includes an integrated temperature and pressure sensor connected to one end of the bypass branch on the inlet path, a stack outlet temperature sensor connected to an outlet of the stack, and a pre-vortex pressure sensor connected to the outlet path near a vortex end of the air compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222147493.4U CN217983414U (en) | 2022-08-15 | 2022-08-15 | Fuel cell system for optimizing heat utilization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222147493.4U CN217983414U (en) | 2022-08-15 | 2022-08-15 | Fuel cell system for optimizing heat utilization |
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| Publication Number | Publication Date |
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| CN217983414U true CN217983414U (en) | 2022-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222147493.4U Active CN217983414U (en) | 2022-08-15 | 2022-08-15 | Fuel cell system for optimizing heat utilization |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116505018A (en) * | 2023-06-14 | 2023-07-28 | 北京理工大学 | Fuel cell cooling system device and method for improving temperature uniformity of battery |
| WO2024036916A1 (en) * | 2022-08-15 | 2024-02-22 | 上海重塑能源科技有限公司 | Hydrothermal system for fuel cells |
-
2022
- 2022-08-15 CN CN202222147493.4U patent/CN217983414U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024036916A1 (en) * | 2022-08-15 | 2024-02-22 | 上海重塑能源科技有限公司 | Hydrothermal system for fuel cells |
| CN116505018A (en) * | 2023-06-14 | 2023-07-28 | 北京理工大学 | Fuel cell cooling system device and method for improving temperature uniformity of battery |
| CN116505018B (en) * | 2023-06-14 | 2024-01-26 | 北京理工大学 | Fuel cell cooling system device and method for improving temperature uniformity of battery |
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