CN216015438U

CN216015438U - Fuel cell system capable of independently expanding capacity

Info

Publication number: CN216015438U
Application number: CN202121382353.4U
Authority: CN
Inventors: 雷晓熙; 鲍军辉; 董辉
Original assignee: Shanghai Panye Hydrogen Energy Technology Co ltd
Current assignee: Shanghai Panye Hydrogen Energy Technology Co ltd
Priority date: 2021-06-21
Filing date: 2021-06-21
Publication date: 2022-03-11
Anticipated expiration: 2031-06-21

Abstract

The utility model relates to an independently expandable fuel cell system, which comprises a hydrogen supply unit (3), a lithium battery (6) and one or more cascaded fuel cell control subsystems (4), wherein each fuel cell control subsystem (4) comprises a monitoring unit and a fuel cell unit (5) connected with the monitoring unit, the output end of the hydrogen supply unit (3) is connected with the input end of the fuel cell unit (5) of each fuel cell control subsystem (4), and the output end of the fuel cell unit (5) of each fuel cell control subsystem (4) is connected with the lithium battery (6) and connected to a user (7). Compared with the prior art, the utility model has the advantages of low cost, small test pressure, high electric energy conversion efficiency and the like.

Description

Fuel cell system capable of independently expanding capacity

Technical Field

The utility model relates to the technical field of fuel cells, in particular to a fuel cell system capable of independently expanding capacity.

Background

With the rapid development of fuel cell technology, fuel cells are also more widely used. The voltage and power of a single fuel cell cannot meet the requirements of practical application, and therefore, a fuel cell stack formed by stacking single cells and auxiliary units matched with the fuel cell stack, such as hydrogen supply, air supply, water heat management, electric power management and the like, are generally adopted to form a fuel cell system. The development, production and manufacturing of fuel cell stacks and system key parts (such as special air compressors, DC/DC converters and the like) of a certain power grade are long in time and extremely high in cost, the existing stacks and system key parts which can meet the practical application scene at present can only integrate one fuel cell system below 120kW, and once performance attenuation or shutdown failure occurs to one stack, the performance attenuation or shutdown of the whole fuel cell system is caused.

In the face of application scenes with larger electric power requirements, the existing solution is 1) customizing according to needs, specially developing and manufacturing electric stacks with higher power levels and key system parts, and integrating a set of fuel cell system; 2) two or more sets of fuel cell systems are used, each configured with a prior art stack and a prior art auxiliary system. The scheme 1) has long time consumption, extremely high cost, long stock cycle, large test pressure, and incapability of fast delivery, and is not beneficial to fast widening of the technical application of the fuel cell; and 2) the fuel cell system is only an electrical combination of two or more sets of fuel cell systems, and the fuel cell system needs more parts and has high cost. In addition, the fuel cell system provided by the scheme 1) and the scheme 2) mostly adopts manual operation for monitoring steps of starting, closing, data acquisition and the like of each device, and has the disadvantages of complex and complicated operation and higher input cost.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to overcoming the above-mentioned drawbacks of the prior art and providing an independently expandable fuel cell system.

The purpose of the utility model can be realized by the following technical scheme:

the fuel cell system capable of independently expanding capacity comprises a hydrogen supply unit, a lithium battery and one or more cascaded fuel cell control subsystems, wherein each fuel cell control subsystem comprises a monitoring unit and a fuel cell unit connected with the monitoring unit, the output end of the hydrogen supply unit is connected with the input end of the fuel cell unit of each fuel cell control subsystem, and the output end of the fuel cell unit of each fuel cell control subsystem is connected with the lithium battery and connected to a user.

Preferably, the monitoring unit includes a touch screen and a control manager mcu, the control manager mcu is wirelessly connected with the fuel cell unit, and the control manager mcu is connected with the touch screen.

Preferably, the fuel cell unit includes a fuel cell module and a dc conversion module, the output of the hydrogen supply unit is connected to the input of the fuel cell module, the output of the fuel cell module is connected to the input of the dc conversion module, and the output of the dc conversion module is connected to the lithium battery and connected to the user.

Preferably, when a plurality of cascaded fuel cell control subsystems are employed, the plurality of fuel cell control subsystems are connected by a communication bus, and the fuel cell units of each fuel cell control subsystem are output in parallel.

Preferably, a plurality of cascaded fuel cell control subsystems are connected via a can2.0b bus.

Preferably, when a plurality of cascaded fuel cell control subsystems are adopted, the touch screen of one fuel cell control subsystem is a master, the touch screens of the other fuel cell control subsystems are slaves, and the touch screen of the master is connected with the touch screens of the other slaves through a CAN2.0B bus.

Preferably, the control manager mcu is connected with the touch screen through RS 232.

Preferably, the control manager mcu is wirelessly connected to the fuel cell unit through can2.0 b.

Preferably, the touch screen is a DMT32240T035_05WTC touch screen.

Preferably, the direct current conversion module adopts a YDN48V70A48D module.

Compared with the prior art, the utility model has the following beneficial effects:

1) the fuel cell system can realize two modes of independent use and cascade use, when the fuel cell system is used independently, the lithium cell provides starting electricity for the fuel cell unit, after the fuel cell is started, the lithium cell provides a part of auxiliary electricity to supply to a user, and after the fuel cell reaches full power, the fuel cell is completely powered by the fuel cell and can charge the lithium cell, so that the cost is low, and the test pressure is greatly reduced; when the cascade is used, the cascade of a plurality of modules can be carried out according to the requirement, a plurality of fuel cell control subsystems can be connected together through a communication line, the master-slave relation of the modules is set by a touch screen, and finally, the modules are output in parallel, and the modules can automatically keep current sharing, thereby being beneficial to rapidly widening the technical application of the fuel cell.

2) The intelligent operation can be realized through the interconnection design of the control manager mcu and the touch screen, and compared with manual operation, the intelligent operation has the advantages of lower input cost and higher efficiency; the touch screen can control and operate the whole system through the RS232, the efficiency is high, the data transmission is stable, the functions of automatic alarm/shutdown and the like under abnormal conditions can be realized, the environmental adaptation is strong, and the social benefit and the economic benefit can be obviously increased;

3) the lithium battery is connected to the output end of the fuel cell unit, so that the electric energy conversion efficiency can be improved, and the lithium battery not only serves as a starting power supply, but also can serve as an auxiliary power supply role.

Drawings

FIG. 1 is a schematic diagram of an independently expandable fuel cell system employing a fuel cell control subsystem according to an exemplary embodiment;

FIG. 2 is a schematic diagram of an independently expandable fuel cell system employing a plurality of fuel cell control subsystems according to an exemplary embodiment;

the reference numbers in the figures indicate:

1. the system comprises a touch screen, 2, a control manager mcu, 3, a hydrogen supply unit, 4, a fuel cell control subsystem, 5, a fuel cell unit, 501, a fuel cell module, 502, a direct current conversion module, 6, a lithium battery, 7 and a user.

Detailed Description

The utility model is described in detail below with reference to the figures and specific embodiments. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.

Examples

The utility model relates to an independently expandable fuel cell system, which comprises a hydrogen supply unit, a lithium battery and one or more fuel cell control subsystems. Each fuel cell control subsystem includes a monitoring unit and a fuel cell unit.

Fig. 1 is a structural diagram of an independently expandable fuel cell system employing a fuel cell control subsystem, which includes a hydrogen supply unit 3, a lithium battery 6 and a fuel cell control subsystem, where the fuel cell control subsystem includes a monitoring unit and a fuel cell unit 5, and the monitoring unit is wirelessly connected with the fuel cell unit 5, so as to remotely control the fuel cell unit 5 and collect data of related devices. The fuel cell unit 5 comprises a fuel cell module 501 and a direct current conversion module 502 which are connected in sequence, the hydrogen supply unit 3 is connected with the fuel cell module 501, the output end of the fuel cell module 501 is connected with the input end of the direct current conversion module 502, and the output end of the direct current conversion module 502 is connected with the user 7. The fuel cell module 501 supplies the generated electric power to the dc conversion module 502, and outputs a stable dc power to the user 7.

The monitoring unit comprises a touch screen 1 and a control manager mcu2, wherein the control manager mcu2 interacts with the fuel cell module 501 and the direct current conversion module 502 through CAN2.0B respectively, and is connected with the touch screen 1 through RS 232. The control manager mcu2 transmits the collected data of the modules to the touch screen 1 through RS232, and the touch screen 1 can control and operate the whole fuel cell control subsystem 4 through RS 232.

The lithium battery 6 is connected with the output end of the fuel cell unit 5 and is responsible for providing starting electricity for the fuel cell unit 5, after the fuel cell unit 5 is started, the lithium battery provides a part of auxiliary electricity to be supplied to a user 7, and after the fuel cell reaches full power, the fuel cell unit 5 supplies power to the lithium battery 6.

Fig. 2 is a structural diagram of an independently expandable fuel cell system employing n (n is greater than 1) cascaded fuel cell control subsystems 4, and as shown in fig. 2, the n fuel cell control subsystems 4 are connected together by a can2.0b bus and output in parallel. The output end of each fuel cell control subsystem 4 is connected with a lithium battery 6 and a user 7.

Each fuel cell control subsystem 4 also includes a touch screen 1, a control manager mcu2, a fuel cell module 501, and a dc conversion module 502. The hydrogen supply unit 3 is respectively connected with the fuel cell modules 501 of the fuel cell control subsystems 4, the output end of the fuel cell module 501 of each fuel cell control subsystem 4 is connected with the input end of the corresponding direct current conversion module 502, and the output end of the direct current conversion module 502 of each fuel cell control subsystem 4 is connected with the user 7. The fuel cell module 501 supplies the generated electric power to the dc conversion modules 502, and the dc conversion modules 502 output stable dc power in parallel to the user 7. The maximum output power of the individual fuel cell control sub-system 4 can be designed to be 3 kw.

The control manager mcu2 interacts with the fuel cell module 501 and the dc conversion module 502 through can2.0, and the control manager mcu2 transmits the acquired data to the touch panel 1 through RS 232. The touch screen 1 can preferentially set a certain fuel cell control subsystem 4 as a master and other fuel cell control subsystems 4 as slaves, and the master can control the slave modules through the touch screen 1. The cascade control can realize that each module automatically keeps current sharing.

The touch panel 1 of the fuel cell control subsystem 4 as the master can control the remaining fuel cell control subsystems 4 as the slaves, and control the control manager mcu2 of each slave to transmit the acquired data of each module to the corresponding touch panel 1 through RS232, and the corresponding touch panel 1 transmits the acquired data to the touch panel 1 of the master through can2.0 b. The touch screen 1 of the master machine issues a control command to the touch screen 1 of the slave machine. Each touch screen 1 can control and operate the fuel cell control subsystem 4 through RS 232.

The lithium battery 6 is connected with the output end of the fuel battery unit 5 of each fuel battery control subsystem 4 and is responsible for providing starting electricity for each fuel battery unit 5, after the fuel battery unit 5 is started, the lithium battery 6 provides a part of auxiliary electricity to supply to a user 7, and after the fuel battery reaches full power, the fuel battery unit 5 supplies power to the whole fuel battery unit and can charge the lithium battery 6.

The number of the fuel cell control subsystems can be set according to actual requirements.

In this embodiment, as a preferable scheme, in the system under the independent and cascade conditions, the model of the touch screen 1 is DMT32240T035 — 05WTC, and the model of the dc conversion module 502 is YDN48V70a 48D.

The fuel cell system can realize two modes of independent use and cascade use, when the fuel cell system is used independently, the lithium cell provides starting electricity for the fuel cell unit, after the fuel cell is started, the lithium cell provides a part of auxiliary electricity to supply to a user, and after the fuel cell reaches full power, the fuel cell is completely powered by the fuel cell and can charge the lithium cell, so that the cost is low, and the test pressure is greatly reduced; when the cascade is used, the cascade of a plurality of modules can be carried out according to the requirement, a plurality of fuel cell control subsystems can be connected together through a communication line, the master-slave relation of the modules is set by a touch screen, and finally, the modules are output in parallel, and the modules can automatically keep current sharing, thereby being beneficial to rapidly widening the technical application of the fuel cell. The intelligent operation can be realized through the interconnection design of the control manager mcu and the touch screen, and compared with manual operation, the intelligent operation has the advantages of lower input cost and higher efficiency; the touch screen can control and operate the whole system through the RS232, the efficiency is high, the data transmission is stable, the functions of automatic alarm/shutdown and the like under abnormal conditions can be realized, the environmental adaptation is strong, and the social benefit and the economic benefit can be obviously increased.

While the utility model has been described with reference to specific embodiments, the utility model is not limited thereto, and those skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope of the utility model. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The fuel cell system capable of independently expanding capacity is characterized by comprising a hydrogen supply unit (3), a lithium battery (6) and one or more cascaded fuel cell control subsystems (4), wherein each fuel cell control subsystem (4) comprises a monitoring unit and a fuel cell unit (5) connected with the monitoring unit, the output end of the hydrogen supply unit (3) is connected with the input end of the fuel cell unit (5) of each fuel cell control subsystem (4), and the output end of the fuel cell unit (5) of each fuel cell control subsystem (4) is connected with the lithium battery (6) and connected to a user (7).

2. An independently expandable fuel cell system according to claim 1, wherein the monitoring unit comprises a touch screen (1) and a control manager mcu (2), the control manager mcu (2) being wirelessly connected to the fuel cell unit (5), the control manager mcu (2) being connected to the touch screen (1).

3. The independently expandable fuel cell system according to claim 2, wherein the fuel cell unit (5) comprises a fuel cell module (501) and a dc-conversion module (502), the output of the hydrogen supply unit (3) is connected to the input of the fuel cell module (501), the output of the fuel cell module (501) is connected to the input of the dc-conversion module (502), and the output of the dc-conversion module (502) is connected to the lithium battery (6) and to the user (7).

4. The independently expandable fuel cell system according to claim 3, wherein, when a plurality of cascaded fuel cell control subsystems (4) are employed, the plurality of fuel cell control subsystems (4) are connected via a communication bus, and the fuel cell units (5) of each fuel cell control subsystem (4) are output in parallel.

5. The independently expandable fuel cell system according to claim 4, wherein a plurality of the cascaded fuel cell control subsystems (4) are connected via a CAN2.0B bus.

6. The independently expandable fuel cell system according to claim 5, wherein, when a plurality of cascaded fuel cell control subsystems (4) are employed, the touch panel (1) of one fuel cell control subsystem (4) is a master, the touch panels (1) of the remaining fuel cell control subsystems (4) are slaves, and the touch panel (1) of the master is connected to the touch panels (1) of the remaining slaves through a can2.0b bus.

7. The independently expandable fuel cell system according to claim 2, wherein the control manager mcu (2) is connected to the touch panel (1) through RS 232.

8. The independently expandable fuel cell system according to claim 2, wherein the control manager mcu (2) is wirelessly connected to the fuel cell unit (5) through can2.0 b.

9. The independently expandable fuel cell system according to claim 2, wherein the touch screen (1) employs a DMT32240T035_05WTC touch screen.

10. An independently expandable fuel cell system according to claim 3, characterized in that the DC-conversion module (502) employs a YDN48V70A48D module.