Fuel cell power generation system

Abstract

The utility model discloses a fuel cell power generation system. Relates to the field of fuel cell power generation. The plurality of converter power modules are connected with the plurality of battery stacks in a one-to-one correspondence manner and are respectively used for converting direct current output by the corresponding battery stacks into alternating current and adjusting output voltage of the corresponding battery stacks to obtain adjusted voltage; and the load module is connected with the plurality of converter power modules and is used for receiving the alternating current and the adjusting voltage which are respectively output by the plurality of converter power modules. The fuel cell power generation system solves the technical problem that the cost of the fuel cell power generation system is increased due to functional redundancy of the fuel cell power generation system arranged in the related technology.

Description

Technical Field

[0001] The utility model relates to the field of fuel cells, and more particularly, to a fuel cell power generation system. Background Art

[0002] Using fuel cells for power generation is a relatively common power generation application. Generally, the direct current generated by a fuel cell system is converted into alternating current through a conversion system for use by a load or directly fed back into the power grid.

[0003] As Figure 1 shown in the related art, a fuel cell power generation system has multiple fuel cell stacks respectively connected to multiple direct current to direct current (DCDC) converters in one-to-one correspondence, jointly constituting a power output system to output direct current, and then connected to an alternating current system in parallel to be converted into alternating current. Among them, the DCDC is used to adjust the multiple voltages respectively output by the multiple fuel cell stacks to the same output voltage, that is, it has a voltage stabilizing effect. The alternating current system is used to convert direct current into alternating current and also has a voltage regulating effect. Both have a voltage stabilizing effect, resulting in functional redundancy. In addition, the DCDC is relatively expensive, and after multiple DCDCs are connected in parallel to a total converter power module, the converter power module in this method is equivalent to a large converter system, with a high price cost, resulting in an increase in the setting cost of the fuel cell power generation system.

[0004] In view of the above problems, no effective solution has been proposed yet. Summary of the Utility Model

[0005] Embodiments of the present utility model provide a fuel cell power generation system to at least solve the technical problem of increased cost of the fuel cell power generation system caused by functional redundancy in the fuel cell power generation system set in the related art.

[0006] According to an aspect of an embodiment of the present utility model, a fuel cell power generation system is provided, including: a plurality of fuel cell stacks; a plurality of converter power modules respectively connected to the plurality of fuel cell stacks in one-to-one correspondence, each for converting the direct current output by the corresponding fuel cell stack into alternating current and adjusting the output voltage of the corresponding fuel cell stack to obtain an adjusted voltage; and a load module connected to the plurality of converter power modules for receiving the alternating current and adjusted voltage respectively output by the plurality of converter power modules.

[0007] Optionally, the fuel cell power generation system further includes: a converter control module, connected to the plurality of converter power modules and to the plurality of battery stacks; the plurality of battery stacks are further configured to respectively send voltage data to the converter control module; the converter control module is configured to receive the voltage data respectively sent by the plurality of battery stacks, and control the plurality of converter power modules to respectively adjust the output voltages of the corresponding battery stacks to obtain corresponding adjusted voltages.

[0008] Optionally, the fuel cell power generation system further includes: a terminal controller, connected to the converter control module; the plurality of battery stacks are further configured to respectively send current data and power data to the converter control module; the converter control module is further configured to receive the current data and power data respectively sent by the plurality of battery stacks, and send the voltage data, current data, and power data respectively corresponding to the plurality of battery stacks to the terminal controller; the terminal controller is further configured to receive the voltage data, current data, and power data respectively corresponding to the plurality of battery stacks, and determine the operating states respectively corresponding to the plurality of battery stacks.

[0009] Optionally, the fuel cell power generation system further includes: a display, connected to the terminal controller, for displaying the voltage data, current data, power data respectively corresponding to the plurality of battery stacks, and the operating states respectively corresponding to the plurality of battery stacks.

[0010] Optionally, the terminal controller is further configured to send setting parameters and / or a first control instruction to the converter control module, wherein the setting parameters are used to indicate the preset parameter adjustment amounts of the plurality of converter power modules, and the first control instruction is used to indicate the voltage adjustment amounts respectively corresponding to the plurality of converter power modules; the converter control module is further configured to adjust the adjusted voltages respectively corresponding to the plurality of converter power modules according to the first control instruction.

[0011] Optionally, the fuel cell power generation system further includes: a plurality of control switches, respectively connected to the plurality of converter power modules in one-to-one correspondence, one end of each of the plurality of control switches is connected to the corresponding converter power module, and the other end is connected to the load module, the plurality of control switches are connected to the terminal controller; the terminal controller is further configured to send a second control instruction to each of the plurality of control switches according to the operating states respectively corresponding to the plurality of battery stacks; the plurality of control switches are configured to adjust the switch states based on the second control instruction.

[0012] Optionally, the fuel cell power generation system further includes: a plurality of capacitor components, disposed between each of the plurality of control switches and the corresponding converter power module, for filtering the adjusted voltage output by the corresponding converter power module.

[0013] Optionally, the fuel cell power generation system further includes: a plurality of assembly boxes for loading a predetermined number of battery elements, wherein each group of the predetermined number of battery elements includes one battery stack among the plurality of battery stacks, and an inverter power module, a capacitor assembly, and a control switch correspondingly connected to the one battery stack.

[0014] Optionally, handles are respectively installed on the plurality of assembly boxes, and at least one handle is installed on each of the plurality of assembly boxes to lift and move the assembly box to any position.

[0015] Optionally, radiators are respectively installed on the plurality of assembly boxes, and at least one radiator is installed on each of the plurality of assembly boxes to dissipate heat generated by the operation of the battery stacks respectively corresponding to the plurality of assembly boxes.

[0016] In the embodiment of the present invention, through a plurality of battery stacks; a plurality of inverter power modules, which are respectively connected to the plurality of battery stacks one by one, and are respectively used for converting the direct current output by the corresponding battery stack into alternating current and adjusting the output voltage of the corresponding battery stack to obtain an adjusted voltage; a load module, which is connected to the plurality of inverter power modules and is used for receiving the alternating current and the adjusted voltage respectively output by the plurality of inverter power modules, the purpose of using a plurality of inverter power modules connected to the plurality of battery stacks one by one to achieve both the voltage stabilization function and the function of converting direct current into alternating current is achieved, thereby realizing the technical effect of effectively avoiding the functional redundancy of the fuel cell power generation system and reducing the production and use costs of the fuel cell power generation system, and further solving the technical problem that the cost of the fuel cell power generation system increases due to the functional redundancy in the related art. Description of the Drawings

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0018] Figure 1 is a schematic structural diagram of a fuel cell power generation system in the related art of the present invention;

[0019] Figure 2 is a schematic structural diagram of a fuel cell power generation system according to an embodiment of the present invention;

[0020] Figure 3 is a schematic structural diagram of an assembly box in a fuel cell power generation system according to an embodiment of the present invention;

[0021] Figure 4Structural diagram of an optional fuel cell power generation system according to an embodiment of the present utility model.

[0022] Among them, the above-mentioned drawings include the following reference numerals:

[0023] 1. Battery stack; 2. Converter power module; 3. Load module; 4. Converter control module; 5. Terminal controller; 6. Display; 7. Control switch; 8. Capacitor assembly; 9. Assembly box; 10. Handle; 11. Radiator. Detailed implementation manners

[0024] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] It should be noted that the terms "first", "second", etc. in the description and claims of the present utility model and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present utility model described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0026] First of all, for the convenience of understanding the embodiments of the present utility model, some terms or nouns involved in the present utility model will be explained below:

[0027] A direct current to direct current (DCDC) converter refers to the conversion from direct current to direct current, which is usually used in power converters or voltage regulators to convert one direct current power supply into another direct current voltage or current.

[0028] The converter power module is a device used to convert direct current into alternating current, convert the direct current electrical energy output by the battery into alternating current electrical energy for the power grid to use, and at the same time used to adjust the voltage output by the battery.

[0029] Such as Figures 2 to 3As shown in the figure, an embodiment of the present invention provides a fuel cell power generation system, which includes:

[0030] As Figure 2 shown, Figure 2 FIG. is a schematic structural diagram of a fuel cell power generation system according to an embodiment of the present invention. The fuel cell power generation system includes a plurality of battery stacks 1; a plurality of converter power modules 2, which are respectively connected to the plurality of battery stacks 1 one by one, and are respectively used to convert the DC current output by the corresponding battery stack 1 into an AC current, and adjust the output voltage of the corresponding battery stack 1 to obtain an adjusted voltage; a load module 3, which is connected to the plurality of converter power modules 2, and is used to receive the AC current and the adjusted voltage respectively output by the plurality of converter power modules 2.

[0031] Applying the fuel cell power generation system provided in this embodiment, based on the connection relationship, the plurality of converter power modules 2 are respectively connected to the plurality of battery stacks 1 one by one, and each battery stack 1 is connected to a converter power module 2. Since the voltages output by the plurality of battery stacks 1 may be different, the converter power module 2 adjusts the different voltages output by the plurality of battery stacks 1 to the same output voltage, and at the same time converts the DC current output by the battery stack 1 into an AC current for the load module 3 to use. That is, the plurality of battery stacks 1 may output different voltages and are DC currents. Through the processing of the converter power module 2, the plurality of converter power modules 2 output the same voltage and output AC currents.

[0032] In addition, in this embodiment, a plurality of small converter power modules 2 are used. The small converter power module 2 has a lower cost compared to the DCDC module, and the cost of removing the DCDC module is effectively reduced, thus achieving the technical effects of avoiding functional redundancy in the fuel cell power generation system and reducing the production cost and use cost of the fuel cell power generation system.

[0033] As Figure 2 shown, the fuel cell power generation system further includes: a converter control module 4, which is connected to the plurality of converter power modules 2 and is connected to the plurality of battery stacks 1; the plurality of battery stacks 1 are further used to respectively send voltage data to the converter control module 4; the converter control module 4 is used to receive the voltage data respectively sent by the plurality of battery stacks 1, and control the plurality of converter power modules 2 to respectively adjust the output voltage of the corresponding battery stack 1 to obtain the corresponding adjusted voltage.

[0034] With the above structure, multiple converter power modules 2 are in a parallel structure, and each converter power module 2 has the function of adjusting the output voltage in the corresponding battery stack 1 to the same regulated voltage. By setting the converter control module 4 to collect the output voltages of multiple battery stacks 1, and according to the differences in the output voltages, controlling the converter power modules 2 corresponding to the output voltages not within the preset voltage range to operate, while the converter power modules 2 corresponding to the output voltages within the preset range do not operate, thus achieving the effect of reducing the usage frequency of the energy consumption of the converter power modules and saving the usage cost of the converter power modules.

[0035] As Figure 2 shown, the fuel cell power generation system further includes: a terminal controller 5, connected to the converter control module 4; multiple battery stacks 1 are further configured to respectively send current data and power data to the converter control module 4; the converter control module 4 is further configured to receive the current data and power data respectively sent by multiple battery stacks 1, and send the voltage data, current data, and power data respectively corresponding to multiple battery stacks 1 to the terminal controller 5; the terminal controller 5 is further configured to receive the voltage data, current data, and power data respectively corresponding to multiple battery stacks 1, and determine the operating states respectively corresponding to multiple battery stacks 1.

[0036] With the above structure, multiple battery stacks 1 respectively send current data, voltage data, and power data to the converter control module 4. The converter control module 4 is connected to the terminal controller 5 and transmits the voltage data, current data, and power data to the terminal controller 5. The terminal controller 5 determines the operating states respectively corresponding to multiple battery stacks 1 based on the data corresponding to the above multiple battery stacks 1. Among them, the operating state of each battery stack 1 can be determined based on a preset safety range value. For example, when the voltage data, current data, and power data of a certain battery stack 1 are all within the preset safety range value, it is determined that the operating state of this battery stack 1 is normal operation.

[0037] It should be noted that the terminal controller 5 in this application is equivalent to a processor, and any processor with a judgment and processing function in the related art can be used to implement the above functions for the above terminal controller 5.

[0038] As Figure 2 shown, the fuel cell power generation system further includes: a display 6, connected to the terminal controller 5, for displaying the voltage data, current data, power data respectively corresponding to multiple battery stacks 1, and the operating states respectively corresponding to multiple battery stacks 1.

[0039] With the above structure, the terminal controller 5 is connected to a display 6, and the display 6 can display all the data and corresponding operating status of multiple battery stacks 1. Among them, the data corresponding to each battery stack 1 in the multiple battery stacks 1 can be displayed in chronological order, or the data corresponding to the multiple battery stacks 1 within a preset time period can be compared and displayed. At the same time, the operating status of the multiple battery stacks 1 can also be displayed on the display 6, and the operating status outside the preset safety range value is reminded to the staff in the form of adding a special identifier (such as an exclamation mark), so that the staff can check and process in time.

[0040] As Figure 2 shown, the terminal controller 5 is also used to send setting parameters and / or a first control instruction to the converter control module 4, where the setting parameters are used to indicate the preset parameter adjustment amount of multiple converter power modules 2, and the first control instruction is used to indicate the voltage adjustment amount corresponding to each of the multiple converter power modules 2; the converter control module 4 is also used to adjust the regulated voltage corresponding to each of the multiple converter power modules 2 according to the first control instruction.

[0041] With the above structure, the converter power module 2 operates based on the setting parameters, and by adjusting the setting parameters, the waveform size of the alternating current output by the converter power module 2 is adjusted. Among them, the setting parameters at least include: the rated power of the converter power module, the energy conversion efficiency corresponding to the converter power module, the protection threshold of the converter power module, and the electrical characteristics of the input and output ends of the converter power module, where the electrical characteristics include electrical parameters such as voltage and current at the input and output ends. The staff can input the setting parameters required for the adjustment of the converter power module 2 into the terminal controller 5. The first control instruction required for the adjustment of the converter power module 2 can be obtained by the staff inputting into the terminal controller 5, or can be identified and issued by the terminal controller 5 based on the input setting parameters. The waveform size of the alternating current output by the converter power module 2 is adjusted based on the setting parameters, and the regulated voltage output by the converter power module 2 is adjusted based on the first control instruction. The terminal controller 5 obtains the setting parameters and the first control instruction and issues them to the converter control module 4, and the converter control module 4 sends them to the corresponding converter power module 2 to achieve the function of adjusting the converter power module 2, thereby effectively achieving the effects of adjusting the alternating current and adjusting the voltage.

[0042] As Figure 2As shown in the figure, the fuel cell power generation system further includes: a plurality of control switches 7, which are respectively and correspondingly connected to a plurality of inverter power modules 2. One end of each of the plurality of control switches 7 is connected to the corresponding inverter power module 2, and the other end is connected to the load module 3. The plurality of control switches 7 are connected to the terminal controller 5; the terminal controller 5 is further configured to send second control instructions to the plurality of control switches 7 respectively according to the operating states corresponding to the plurality of battery stacks 1; the plurality of control switches 7 are configured to adjust the switch states based on the received second control instructions.

[0043] With the above structure, corresponding control switches 7 are arranged between the plurality of inverter power modules 2 and the load module 3, that is, each inverter power module 2 is connected to a control switch 7, and the plurality of control switches 7 are connected in parallel and then connected to the load module 3. Specifically, the plurality of battery stacks 1 are respectively and correspondingly connected to the plurality of inverter power modules 2, and the plurality of inverter power modules 2 are respectively and correspondingly connected to the plurality of control switches 7. By adjusting the plurality of control switches 7, the power supply state of the battery stack 1 corresponding to the control switch 7 can be controlled. That is, when the control switch 7 is turned on, the battery stack 1 corresponding to the control switch 7 supplies power normally; when the control switch 7 is closed, the battery stack 1 corresponding to the control switch 7 stops supplying power. Based on the operating state obtained by the terminal controller 5, when the operating state is abnormal operation, the terminal controller 5 controls the control switch 7 corresponding to the abnormally operating battery stack 1 to be in the closed state, thereby cutting off the power supply of the abnormally operating battery stack 1, and at the same time not affecting the normal power supply of the remaining battery stacks 1 to the load, effectively realizing the normal operation of the fuel cell power generation system.

[0044] As Figure 2 shown in the figure, the fuel cell power generation system further includes: a plurality of capacitor components 8, which are arranged between each control switch 7 of the plurality of control switches 7 and the corresponding inverter power module 2, and are used for filtering the regulated voltage output by the corresponding inverter power module 2.

[0045] With the above structure, since the regulated voltage output by the inverter power module 2 may have excessive harmonics and be directly connected to the load module 3, it may damage the load module 3. Therefore, capacitor components 8 are arranged between each control switch 7 of the plurality of control switches 7 and the corresponding inverter power module 2. Based on the capacitor components 8, the harmonic components in the regulated voltage are reduced, so that the output AC current waveform is smoother, achieving the filtering effect. Specifically, the capacitor components 8 have the function of storing and releasing electric energy, and can reduce the peak value of the current waveform and the harmonic components of the voltage to a certain extent, effectively avoiding damaging the load module 3 when the regulated voltage is directly connected to the load module 3, thereby effectively realizing the normal operation of the fuel cell power generation system.

[0046] As Figure 2 and Figure 3 shown in the figureFigure 3 Schematic diagram of the structure of the assembly box 9 in a fuel cell power generation system according to an embodiment of the present utility model. The fuel cell power generation system further includes: a plurality of assembly boxes 9 for loading a predetermined number of groups of battery elements. Each group of battery elements in the predetermined number of groups of battery elements includes one battery stack 1 in a plurality of battery stacks 1, and an inverter power module 2, a capacitor assembly 8, and a control switch 7 correspondingly connected to one battery stack 1.

[0047] With the above structure, a plurality of battery elements are respectively stored in a plurality of assembly boxes 9, that is, Figure 2 as shown, a group of battery stacks 1, an inverter power module 2, a capacitor assembly 8, and a control switch 7 are placed in one assembly box 9. The control switch 7 in the assembly box 9 connects a line and transmits it outside the assembly box 9 to be connected to the load module 3. Among them, according to actual applications, the number of assembly boxes 9 can be increased or decreased, that is, the number of battery elements can be increased or decreased. In the case of more power consumption, multiple assembly boxes 9 can be used to connect the load module 3, or during use, if the power consumption increases, only a few more assembly boxes 9 need to be used to connect to the load module 3, which can effectively achieve the effect of flexible expansion of the fuel cell power generation system. At the same time, the multiple assembly boxes 9 are all independent individuals and can be placed together or in different places. In the case of a relatively small site, the multiple assembly boxes 9 can be scattered and placed at positions that do not interfere with the operation of other electrical equipment or power generation equipment. This method can extend the line between the assembly box 9 and the load module 3, and thus achieve the effect of flexible placement of the multiple assembly boxes 9.

[0048] In addition, in one assembly box 9, one group of battery elements can be placed, or two groups (or more) of battery elements can be placed. If two groups (or more) of battery elements are placed, the assembly box 9 can be used as a protective shell, effectively achieving the effect of protecting the internal battery elements from damage.

[0049] As Figure 3 shown, handles 10 are respectively installed on a plurality of assembly boxes 9, and at least one handle 10 is installed on each of the plurality of assembly boxes 9 to lift the assembly box 9 and move it to any position.

[0050] With the above structure, the assembly box 9 can be lifted and moved to any position. Among them, one handle 10 can be provided on one assembly box 9, and the handle 10 is provided on the upper top surface of the assembly box 9 so that one person can move the assembly box 9 by lifting. Two handles 10 can also be provided on one assembly box 9, and the two handles 10 are symmetrically arranged on the side surface of the assembly box 9 along the central axis of the assembly box 9, which can enable two people to move the assembly box 9 by lifting. The effect of moving the assembly box 9 to any position is effectively achieved.

[0051] AsFigure 3 As shown in the figure, radiators 11 are respectively installed on multiple assembly boxes 9, and at least one radiator 11 is installed on each of the multiple assembly boxes 9 to dissipate the heat generated by the operation of the battery stacks 1 respectively corresponding to the multiple assembly boxes 9.

[0052] With the above structure, the battery stack 1 will continuously generate heat during the power supply process. The battery stack 1 is placed in the assembly box 9, and the radiator 11 is arranged on the assembly box 9 to realize the diffusion of the heat in the assembly box 9 to the external environment, effectively maintaining the temperature in the assembly box 9 within the normal operating temperature range, thereby realizing the normal operation of the fuel cell power generation system.

[0053] The fuel cell power generation system provided by the embodiment has the following beneficial effects:

[0054] (1) By using multiple small converter power modules 2, the cost of the small converter power modules 2 is relatively low, and the cost of removing the DCDC module is eliminated, effectively achieving the technical effect of avoiding functional redundancy of the fuel cell power generation system and reducing the production cost and use cost of the fuel cell power generation system.

[0055] (2) Based on the operating state obtained by the terminal controller 5, when the operating state is abnormal, the terminal controller 5 controls the control switch 7 corresponding to the abnormally operating battery stack 1 to be in the closed state, thereby cutting off the power supply of the abnormally operating battery stack 1, and at the same time not affecting the normal power supply of the remaining battery stacks 1 to the load, effectively realizing the normal operation of the fuel cell power generation system.

[0056] (3) The assembly box 9 is provided to assemble the battery elements together. According to the actual application, the number of assembly boxes 9 can be increased or decreased, that is, the number of battery elements can be increased or decreased. In the case of more power consumption, multiple assembly boxes 9 can be used to connect the load module 3, or during use, if the power consumption increases, only a few more assembly boxes 9 need to be used to connect to the load module 3, which can effectively achieve the effect of flexible expansion of the fuel cell power generation system.

[0057] Based on the above embodiments and alternative embodiments, the present utility model proposes an alternative implementation manner. Figure 4 It is a structural diagram of an alternative fuel cell power generation system according to an embodiment of the present utility model. As Figure 4 shown, the system includes:

[0058] Converter system. Specifically, the converter system includes multiple converter power modules 2 that can be flexibly expanded and a converter control module 4. The DC side of each converter power module 2 is connected to a battery stack 1, and the AC sides of multiple converter power modules 2 are connected in parallel and commonly connected to the power grid or load. Among them, the converter control module 4 and the converter power modules 2 can communicate with each other, and are used to control multiple converter power modules 2 to output the output voltage of the battery stack 1 to the same regulated voltage.

[0059] The converter control module 4 is responsible for summarizing the operation information corresponding to multiple battery stacks 1, including information such as total power and total current, and supports one-key issuing of the first control command, including commands for controlling the startup, shutdown, parameter setting, and operation mode adjustment of each converter power module 2.

[0060] The converter control module 4 communicates with the fuel cell power generation system controller (i.e., the terminal controller 5), uploads the information received by the converter system to the fuel cell power generation system controller, and can accept the commands issued by the fuel cell power generation system controller. The converter power module 2 also has functions such as information monitoring and command issuing, and also includes a fault detection and diagnosis function.

[0061] Since the converter itself has a voltage stabilizing function, the DC-DC converter in the related technology overlaps with its function, resulting in wasted functions and increased costs. However, if the DC-DC converter is directly removed, in the case of multiple battery stacks 1 connected in parallel, there will be a situation of current backflow, which affects the operation of the battery stack 1. In this embodiment, by connecting each battery stack 1 to a converter power module 2, the problem that the battery stacks 1 cannot be directly connected in parallel on the DC side is solved when the DC-DC converter is removed, and at the same time, multiple DC-DC converters are removed, achieving the effect of reducing the cost of the fuel cell power generation system.

[0062] In addition, it still needs to be noted that the optional or preferred implementation manners of this embodiment can be referred to the relevant descriptions in the embodiments, and will not be elaborated here.

[0063] The above sequence of the embodiments of the present utility model is only for description and does not represent the advantages and disadvantages of the embodiments.

[0064] In the above embodiments of the present utility model, the descriptions of each embodiment have their own focuses. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0065] The above is only the preferred implementation manner of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A fuel cell power generation system, characterized in that, Comprising: A plurality of battery stacks (1); A plurality of inverter power modules (2), which are connected to the plurality of battery stacks (1) one-to-one, and are respectively used for converting the DC current output by the corresponding battery stack (1) into an AC current and adjusting the output voltage of the corresponding battery stack (1) to obtain an adjusted voltage; A load module (3), which is connected to the plurality of inverter power modules (2) and is used for receiving the AC current and the adjusted voltage respectively output by the plurality of inverter power modules (2).

2. The fuel cell power generation system according to claim 1, wherein The fuel cell power generation system further comprises: An inverter control module (4), which is connected to the plurality of inverter power modules (2) and is also connected to the plurality of battery stacks (1); The plurality of battery stacks (1) are further used for respectively sending voltage data to the inverter control module (4); The inverter control module (4) is used for receiving the voltage data respectively sent by the plurality of battery stacks (1) and controlling the plurality of inverter power modules (2) to respectively adjust the output voltage of the corresponding battery stack (1) according to the received voltage data to obtain the corresponding adjusted voltage.

3. The fuel cell power generation system according to claim 2, wherein The fuel cell power generation system further comprises: A terminal controller (5), which is connected to the inverter control module (4); The plurality of battery stacks (1) are further used for respectively sending current data and power data to the inverter control module (4); The inverter control module (4) is further used for receiving the current data and the power data respectively sent by the plurality of battery stacks (1) and sending the voltage data, current data and power data respectively corresponding to the plurality of battery stacks (1) to the terminal controller (5); The terminal controller (5) is further used for receiving the voltage data, current data and power data respectively corresponding to the plurality of battery stacks (1) and determining the operating states respectively corresponding to the plurality of battery stacks (1).

4. The fuel cell power generation system according to claim 3, wherein The fuel cell power generation system further comprises: A display (6), which is connected to the terminal controller (5) and is used for displaying the voltage data, current data, power data respectively corresponding to the plurality of battery stacks (1) and the operating states respectively corresponding to the plurality of battery stacks (1).

5. The fuel cell power generation system according to claim 3, wherein The terminal controller (5) is further used for sending setting parameters and / or a first control instruction to the inverter control module (4), wherein the setting parameters are used to indicate the preset parameter adjustment amount of the plurality of inverter power modules (2), and the first control instruction is used to indicate the voltage adjustment amount respectively corresponding to the plurality of inverter power modules (2); The inverter control module (4) is further used for adjusting the adjusted voltage respectively corresponding to the plurality of inverter power modules (2) according to the first control instruction.

6. The fuel cell power generation system according to claim 3, characterized in that, The fuel cell power generation system further comprises: A plurality of control switches (7), which are connected to the plurality of inverter power modules (2) one-to-one. One ends of the plurality of control switches (7) are respectively connected to the corresponding inverter power modules (2), and the other ends are connected to the load module (3). The plurality of control switches (7) are connected to the terminal controller (5); The terminal controller (5) is further configured to send second control instructions to the plurality of control switches (7) respectively according to the operating states corresponding to the plurality of battery stacks (1); The plurality of control switches (7) are configured to adjust the switch states based on the second control instructions.

7. The fuel cell power generation system according to claim 6, characterized in that, The fuel cell power generation system further includes: A plurality of capacitor components (8), arranged between each of the plurality of control switches (7) and the corresponding converter power module (2), for filtering the regulated voltage output by the corresponding converter power module (2).

8. The fuel cell power generation system according to claim 7, characterized in that, The fuel cell power generation system further includes: A plurality of assembly boxes (9), for loading a predetermined number of battery elements, wherein each set of battery elements in the predetermined number of battery elements includes one battery stack (1) among the plurality of battery stacks (1), and the converter power module (2), capacitor component (8) and control switch (7) correspondingly connected to the one battery stack (1).

9. The fuel cell power generation system according to claim 8, wherein Handles (10) are respectively installed on the plurality of assembly boxes (9), and at least one handle (10) is installed on each of the plurality of assembly boxes (9) to lift and move the assembly box (9) to any position.

10. The fuel cell power generation system according to claim 8, wherein Radiators (11) are respectively installed on the plurality of assembly boxes (9), and at least one radiator (11) is installed on each of the plurality of assembly boxes (9) to dissipate the heat generated by the operation of the battery stacks (1) corresponding to the plurality of assembly boxes (9) respectively.

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