Fuel cell dual stack power generation test system

Abstract

The present invention provides a fuel cell dual-stack power generation detection system, wherein the fuel cell dual-stack power generation detection system includes a stack detection platform, a hydrogen supply component, an oxygen supply component and a load and control circuit, the stack detection platform is provided with two detection stations for fixing two stack units, wherein the hydrogen supply component and the oxygen supply component can be conductively connected to the two stack units, the hydrogen supply component provides hydrogen to the two stack units, and the oxygen supply component provides oxygen to the two stack units, the load and control circuit have a single stack detection mode, a dual stack parallel detection mode and a dual stack series detection mode, and the load and control circuit switch between the single stack detection mode, the dual stack parallel detection mode and the dual stack series detection mode.

Description

Technical Field

[0001] The invention relates to the field of fuel cells, and in particular to a fuel cell dual-stack power generation test system. Background Art

[0002] For the activation, performance testing or factory testing of the existing air-cooled hydrogen fuel cell dual-stack power generation system (or multi-stack system), building a test platform is complex and cannot meet the flexible and changeable test requirements. Especially in the dual-stack system, in order to explore the performance of each stack, it is necessary to do series testing, parallel testing, and single-stack testing of the two stacks, and how to simply, quickly and accurately complete the above tests is an urgent problem for the commercial production of the current air-cooled hydrogen fuel cell dual-stack power generation system. At the same time, in the process of improving the performance of the air-cooled hydrogen fuel cell power generation system, a large amount of component selection and experiments are required to find suitable components; how to make the test platform adapt to a variety of component combinations and rapid disassembly and assembly is also a problem in the commercialization process of the air-cooled fuel cell power generation system.

[0003] The test system of the existing technology still has at least one of the following defects: First, a single-stack system of a fuel cell can be tested, but a dual-stack (multi-stack) system cannot be tested; Second, the existing technology cannot test the online rapid switching connection mode of the fuel cell dual-stack power generation system, including series stack test, parallel stack test, single stack test, etc.; Third, in the existing technology, each activation test, function test, factory inspection test, etc. of the fuel cell system is time-consuming and labor-intensive, and it is impossible to improve the test efficiency and shorten the test time. Summary of the invention

[0004] A major advantage of the present invention is that it provides a fuel cell dual-stack power generation test system, wherein the fuel cell dual-stack power generation test system meets the long-term safety test requirements of an air-cooled hydrogen fuel cell dual-stack power generation system.

[0005] Another advantage of the present invention is that it provides a fuel cell dual-stack power generation test system, wherein the fuel cell dual-stack power generation test system quickly and safely switches between different test modes of the air-cooled hydrogen fuel cell dual-stack power generation system, such as series test, parallel test, and single stack test, thereby shortening the test time and improving the test efficiency.

[0006] Another advantage of the present invention is that it provides a fuel cell dual-stack power generation test system, wherein the fuel cell dual-stack power generation test system improves the test efficiency of an air-cooled hydrogen fuel cell dual-stack power generation system and reduces the problem of test time.

[0007] Another advantage of the present invention is that it provides a fuel cell dual-stack power generation test system, wherein the fuel cell dual-stack power generation test system can safely and quickly complete the construction of an air-cooled hydrogen fuel cell dual-stack power generation test system, reducing test time and manpower and material costs.

[0008] Another advantage of the present invention is that it provides a fuel cell dual-stack power generation test system, wherein the fuel cell dual-stack power generation test system can comprehensively and efficiently complete various fuel cell tests, such as series test, parallel test, single stack test, etc., thereby improving the reliability of the fuel cell and facilitating the rapid switching of the detection mode of the air-cooled hydrogen fuel cell dual-stack power generation system.

[0009] Another advantage of the present invention is that it provides a fuel cell dual-stack power generation test system, wherein the construction of the fuel cell dual-stack power generation test system can test two stacks at the same time, the test efficiency is significantly improved, and the test time is significantly reduced.

[0010] Another advantage of the present invention is that it provides a fuel cell dual-stack power generation test system, wherein the fuel cell dual-stack power generation test system test platform is controlled by software, and can not only test two stacks at the same time, but also perform a single stack test, which has stronger applicability.

[0011] Other advantages and features of the present invention will become more apparent from the following detailed description and may be realized by means of the instrumentalities and combinations particularly pointed out in the appended claims.

[0012] According to one aspect of the present invention, a fuel cell dual stack power generation detection system of the present invention, which can achieve the aforementioned objects and other objects and advantages, is suitable for detecting two fuel cell stack units, and the fuel cell dual stack power generation detection system comprises:

[0013] A battery stack detection platform, wherein the battery stack detection platform is provided with two detection stations for fixing the two battery stack units;

[0014] a hydrogen supply component and an oxygen supply component, which are conductively connected to the two stack units, the hydrogen supply component provides hydrogen to the two stack units, and the oxygen supply component provides oxygen to the two stack units; and

[0015] A load and control circuit, wherein the load and control circuit has a single stack detection mode, a dual stack parallel detection mode and a dual stack series detection mode, and the load and control circuit switches between the single stack detection mode, the dual stack parallel detection mode and the dual stack series detection mode, so that the load and control circuit detects the operating data of the two battery stack units in the single stack detection mode, the dual stack series detection mode and the dual stack parallel detection mode.

[0016] According to one embodiment of the present invention, the load and control circuit includes an electronic load, at least one switch component, at least one detection device and at least one electrical connection device, wherein the switch component and the detection device are electrically connected to the electronic load through the electrical connection device, and the switch component is adjustable to control the connection mode of the electrical connection device, so that when the battery stack unit is electrically connected to the electronic load through the electrical connection device, the switch component switches the detection mode between the two battery stack units and the electronic load by controlling the connection mode of the electrical connection device.

[0017] According to one embodiment of the present invention, it further includes a control system, which is communicatively connected to the load and the control circuit, and the control system sends control instructions to the switch component of the load and the control circuit, wherein the switch component adjusts the detection mode based on the control instruction of the control system, and the detection device is communicatively connected to the control system, and the control system determines the detection results of the two battery stack units based on the detection data of the detection device.

[0018] According to one embodiment of the present invention, the switch assembly includes a first selection switch and a second selection switch, wherein the first selection switch and the second selection switch are connected in series to the electronic load, and the performance data of the two-stack unit in the single stack detection mode is individually detected through the closed contact combination of the first selection switch and the second selection switch.

[0019] According to one embodiment of the present invention, the switch assembly further includes a first relay and a second relay, wherein the first relay is connected to the contacts of the first selection switch, and the second relay is connected to the contacts of the second selection switch, wherein the performance data of the two-stack unit in the dual-stack series detection mode and the dual-stack parallel detection mode is detected through the contact combination between the first selection switch, the second selection switch, the first relay and the second relay.

[0020] According to one embodiment of the present invention, the first selection switch includes a first selection switch body and is further provided with a first switch first contact, a first switch second contact, a first switch third contact, and a first switch fourth contact, wherein the first selection switch body can selectively connect the first switch first contact, the first switch second contact, the first switch third contact, or the first switch fourth contact, and the first selection switch body is connected to the electronic load through the electrical connection device; the first switch first contact can be electrically connected to a positive terminal of the first battery stack unit through the electrical connection device; the first switch second contact can be electrically connected to a negative terminal of the first battery stack unit through the electrical connection device; the first switch third contact can be electrically connected to a positive terminal of the second battery stack unit through the electrical connection device; the first switch fourth contact The point can be electrically connected to a negative terminal of the second battery stack unit through the electrical connection device; wherein the second selection switch includes a second selection switch body, and is further provided with a second switch first contact, a second switch second contact, a second switch third contact, and a second switch fourth contact, the second selection switch body is connected to the electronic load through the electrical connection device; the second switch first contact can be electrically connected to the positive terminal of the first battery stack unit through the electrical connection device; the second switch second contact can be electrically connected to the negative terminal of the first battery stack unit through the electrical connection device; the second switch third contact can be electrically connected to the positive terminal of the second battery stack unit through the electrical connection device; the second switch fourth contact can be electrically connected to the negative terminal of the second battery stack unit through the electrical connection device.

[0021] According to one embodiment of the present invention, when the fuel cell dual-stack power generation test system performs a single-stack test, the first selection switch body of the first selection switch is closed at the first contact of the first switch, and the second selection switch body of the second selection switch is closed at the second contact of the second switch, so that the electronic load is electrically connected to the first stack unit through the switch assembly and the electrical connection device.

[0022] According to one embodiment of the present invention, when the fuel cell dual-stack power generation test system performs a single-stack test, the first selection switch body of the first selection switch is closed at the third contact of the first switch, and the second selection switch body of the second selection switch is closed at the fourth contact of the second switch, so that the electronic load is electrically connected to the second fuel cell stack unit through the switch assembly and the electrical connection device.

[0023] According to one embodiment of the present invention, the first relay further includes a first relay body and is further provided with a first relay first contact and a first relay second contact, wherein one end of the first relay body is connected to the first switch second contact of the first selection switch, and the other end of the first relay body can be selectively connected to the first relay first contact and the first relay second contact, the first relay first contact is connected to the first switch fourth contact of the first selection switch, and the first relay second contact is connected to the first switch third contact of the first selection switch, wherein the second relay includes a second relay body and is further provided with a second relay contact, wherein one end of the second relay body is connected to the second switch third contact of the second selection switch, the second relay contact is connected to the second switch first contact of the second selection switch, and the second relay body can be connected to the second relay contact.

[0024] According to one embodiment of the present invention, when the fuel cell dual-stack power generation test system performs a dual-stack series test, the first selection switch body of the first selection switch closes the first contact of the first switch, and while ensuring that the second relay remains in a disconnected state, the first relay body of the first relay is closed at the second contact of the first relay, so that the two fuel cell units are connected in series, and the second switch body of the second selection switch is closed at the fourth contact of the second switch, so that the two fuel cell units are connected to the electronic load.

[0025] According to one embodiment of the present invention, when the fuel cell dual-stack power generation test system performs a dual-stack parallel test, the first selection switch body of the first selection switch is closed to the first contact of the first switch, and while ensuring that the first relay and the first relay body are disconnected from the second contact of the first relay, the second relay body is closed at the second relay contact, and then the first relay body of the first relay is closed at the first contact of the first relay, so that the two fuel cell units are connected in parallel, and the second switch body of the second selection switch is closed at the fourth contact of the second switch, so that the two fuel cell units are connected to the electronic load.

[0026] According to an embodiment of the present invention, the detection device includes a voltage sensor and a current sensor, wherein the voltage sensor and the current sensor are connected to the electronic load through the electrical connection device.

[0027] According to one embodiment of the present invention, it further includes a heat dissipation assembly, wherein the heat dissipation assembly includes a power supply unit and at least two fans electrically connected to the power supply unit, wherein the fans are arranged on the battery stack test platform, and the fans are adjacent to the detection station of the battery stack test platform.

[0028] According to one embodiment of the present invention, it further includes two stack inspection devices, which are conductively connected to the stack unit and are also communicatively connected to the control system, and data information detected by the stack inspection device is transmitted to the control system.

[0029] Further objects and advantages of the present invention will be fully apparent from an understanding of the following description and the accompanying drawings.

[0030] These and other objects, features and advantages of the present invention will be more fully understood from the following detailed description, accompanying drawings and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1A It is a schematic diagram of a fuel cell dual-stack power generation test system according to a first preferred embodiment of the present invention.

[0032] Figure 1B A system block diagram of the fuel cell dual-stack power generation test system according to the first preferred embodiment of the present invention.

[0033] Figure 2 It is a schematic diagram of the fuel cell dual stack power generation test system testing the first fuel cell stack individually according to the first preferred embodiment of the present invention.

[0034] Figure 3 It is a schematic diagram of the fuel cell dual stack power generation test system testing the second fuel cell stack separately according to the first preferred embodiment of the present invention.

[0035] Figure 4 It is a schematic diagram of testing a dual-stack fuel cell series connection by the fuel cell dual-stack power generation test system according to the first preferred embodiment of the present invention.

[0036] Figure 5 It is a schematic diagram of testing a dual-stack fuel cell in parallel by the fuel cell dual-stack power generation test system according to the first preferred embodiment of the present invention.

[0037] Figure 6 It is a test flow chart of the fuel cell dual stack power generation test system according to the first preferred embodiment of the present invention. DETAILED DESCRIPTION

[0038] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0039] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0040] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0041] Referring to the accompanying drawings of the present invention Figures 1A to 6 As shown, a fuel cell dual-stack power generation test system according to the first preferred embodiment of the present invention is explained in the following description. The fuel cell dual-stack power generation test system includes a stack detection platform 10, wherein the stack detection platform 10 is suitable for fixing the stack unit 100 of two fuel cells (the first stack unit 100a and the second stack unit 100b), and the stack detection platform 10 is provided with two detection stations 11 (i.e., the first detection station 11a and the second detection station 11b), wherein the first stack unit 100a is suitable for being fixed to the first detection station 11a by the stack detection platform 10, and the second stack unit 100b is fixed to the second detection station 11b by the stack detection platform 10. It can be understood that the stack unit 100 (the first stack unit 100a and the second stack unit 100b) of the fuel cell is a power generation device of the fuel cell power generation equipment to be tested.

[0042] It can be understood by those skilled in the art that, in the preferred embodiment of the present invention, the fuel cell dual stack power generation test system is suitable for detecting a dual stack fuel cell, that is, detecting the two fuel cell stack units 100. The fuel cell dual stack power generation test system can also be used to detect two or more fuel cell stack units, that is, the fuel cell dual stack power generation test system can be used to detect multiple pairs of fuel cell systems.

[0043] It is worth mentioning that the stack unit 100 to be tested includes a stack body 101, and a hydrogen inlet end 102, a hydrogen outlet end 103, an air inlet end 104, an air outlet end 105, a positive electrode terminal 106 and a negative electrode terminal 107 arranged on the stack body 101, wherein the fuel hydrogen enters the stack body 101 from the hydrogen inlet end 102, and the unreacted hydrogen and the water stains obtained by the reaction are discharged from the hydrogen outlet end 103; wherein the air participating in the reaction enters the stack body 101 from the air inlet end 104, and the unreacted air is discharged from the stack body 101 through the air outlet end 105; wherein when the stack unit 100 generates electricity, the positive electrode terminal 106 is the positive electrode of the power output of the stack unit 100, and the negative electrode terminal 107 is the negative electrode of the power output of the stack unit 100.

[0044] The fuel cell dual-stack power generation test system further includes a hydrogen supply component 20, an oxygen supply component 30, and a load and control circuit 40, wherein the hydrogen supply component 20 and the oxygen supply component 30 can be interconnected with the two stack units 100, that is, the hydrogen supply component 20 can be connected to the hydrogen inlet end 101 of the two stack units 100, and the fuel hydrogen required for detection is provided to the two stack units 100 through the hydrogen supply component 20; the oxygen supply component 30 can be connected to the air inlet end 103 and the air outlet end 104 of the two stack units 100, and the fuel air required for detection is provided to the two stack units 100 through the oxygen supply component 30.

[0045] The load and control circuit 40 is electrically connected to the two stack units 100, and the on or off state of the two stack units 100 is controlled by the load and control circuit 40, and the working data of the stack unit 100 when it is in the on state is detected, such as the power generation voltage and current. The load and control circuit 40 controls the stack units 100 (the first stack unit 100a and the second stack unit 100b) to be turned on separately through switches; or controls the two stack units 100 to be turned on at the same time, and the first stack unit 100a and the second stack unit 100b are connected in series when the two stack units 100 are turned on at the same time; or controls the two stack units 100 to be turned on at the same time, and the first stack unit 100a and the second stack unit 100b are connected in parallel when the two stack units 100 are turned on at the same time. In other words, the load and control circuit 40 controls the switching of the two stack units 100 to be tested between the single stack mode and the dual stack mode, and detects the working data of each stack unit 100 in the single stack mode; in the dual stack mode, by controlling the connection relationship between the first stack unit 100a and the second stack unit 100b, the working data of the two stack units 100 in series and in parallel are detected to explore the performance of each stack unit 100. The fuel cell dual stack power generation test system performs series testing, parallel testing, and single stack testing on two stack units 100. Simply, quickly, and accurately completing the above tests is an urgent issue for the current air-cooled hydrogen fuel cell dual stack power generation system to complete commercial production.

[0046] The fuel cell dual stack power generation test system further includes a control system 50, the control system 50 is electrically connected to the load and control circuit 40, wherein the control system 50 sends a control instruction to control the load and control circuit 40, wherein the load and control circuit 40 controls the conduction state of the two stack units 100 based on the control instruction of the control system 50, and then detects the working data of the stack unit 100 to be detected. The load and control circuit 40 is communicatively connected to the control system 50, wherein the various data of the two stack units 100 detected by the load and control circuit 40 are transmitted to the control system 50, so that the control system 50 can control the working state of the load and control circuit 40.

[0047] like Figure 1A and Figure 1BAs shown, the load and control circuit 40 includes an electronic load 41, at least one switch component 42, at least one detection device 43, and an electrical connection device 44 electrically connecting the electronic load 41, the at least one switch component 42, and the detection device 43. It can be understood that the electronic load 41 and the two stack units 100 can be conductively connected through the electronic connection device 44, and the switch component 42 and the detection device 43 are located between the electronic load 41 and the two stack units 100, wherein the switch component 42 controls the conduction state between the electronic load 41 and the two stack units 100 based on the control instruction of the control system 50, and switches the detection mode of the stack detection, that is, switching between the single stack mode, the dual stack series mode, and the dual stack parallel mode. The detection device 43 is connected to the control system 50 in a communication manner, wherein the detection device 43 is used to detect the data information of the two stack units 100 and the electronic load 41 when they are conductive in each detection mode, such as voltage, current and other data information. The data information detected by the detection device 43 is transmitted to the control system 50, and the control system 50 determines whether the current two-cell stack unit 100 meets the detection standard based on the detection data.

[0048] The electronic load 41 may be, but is not limited to, an electric energy storage device, such as a power supply, or an electric device, such as a lamp, a motor, or other electric devices. In any detection mode, the switch component 42 conducts between the electronic load 41 and the battery stack unit 100, wherein the electric energy generated by the battery stack unit 100 is transmitted to the electronic load 41, and the detection device 43 detects various data information of the battery stack unit 100.

[0049] It is worth mentioning that the electrical connection device 44 can be connected to the positive terminal 106 and the negative terminal 107 of the two stack units 100, wherein the switch component 42 turns on or off the stack unit 100 based on the control instruction and detection mode of the control system 50. The switch component 42 can turn on the first stack unit 100a alone based on the control instruction of the control system 50; or turn on the second stack unit 100b alone; or connect and turn on the first stack unit 100a and the second stack unit 100b in series; or turn on the first stack unit 100a and the second stack unit 100b in parallel, that is, switch the stack unit 100 to different detection modes.

[0050] Preferably, the switch assembly 42 includes a first selection switch 421 (i.e., K1 in the figure), a second selection switch 422 (i.e., K2 in the figure), a first relay 423 (i.e., K3 in the figure) and a second relay 424 (i.e., K4 in the figure), wherein the first selection switch 421 and the second selection switch 422 are respectively connected in series to the two ends (positive end and negative end) of the electronic load 41, and the performance of the first battery stack unit 100a and the second battery stack unit 100b can be detected separately through the closed contact combination of the first selection switch 421 and the second selection switch 422. The first relay 423 and the second relay 424 can be electrically connected to the two battery stack units 100 through the electrical connection device 44, and the first selection switch 421, the second selection switch 422, the first relay 423 and the second relay 424 can be switched to the first battery stack unit 100a and the second battery stack unit 100b series battery stack test and parallel battery stack test respectively.

[0051] In detail, the first selection switch 421 includes a first selection switch body 4211 and is further provided with a first switch first contact 4212 (i.e., K1M1 in the figure), a first switch second contact 4213 (i.e., K1M2 in the figure), a first switch third contact 4214 (i.e., K1M3 in the figure), and a first switch fourth contact 4215 (i.e., K1M4 in the figure), wherein the first selection switch body 4211 can selectively connect the first switch first contact 4212, the first switch second contact 4213, the first switch third contact 4214, or the first switch fourth contact 4215. The first selection switch body 4211 is connected to the electronic load 41 through the electrical connection device 44; the first switch first contact 4212 can be electrically connected to the positive terminal 106 of the first battery stack unit 100a through the electrical connection device 44; the first switch second contact 4213 can be electrically connected to the negative terminal 107 of the first battery stack unit 100a through the electrical connection device 44; the first switch third contact 4214 can be electrically connected to the positive terminal 106 of the second battery stack unit 100b through the electrical connection device 44; the first switch fourth contact 4215 can be electrically connected to the negative terminal 107 of the second battery stack unit 100b through the electrical connection device 44.

[0052] The second selection switch 422 includes a second selection switch body 4221, and is further provided with a second switch first contact 4222 (i.e., K2M1 in the figure), a second switch second contact 4223 (i.e., K2M2 in the figure), a second switch third contact 4224 (i.e., K2M3 in the figure), and a second switch fourth contact 4225 (i.e., K2M4 in the figure), wherein the second selection switch body 4221 can selectively connect the second switch first contact 4222, the second switch second contact 4223, the second switch third contact 4224, or the second switch fourth contact 4225. The second selection switch body 4221 is connected to the electronic load 41 through the electrical connection device 44; the first contact 4222 of the second switch can be electrically connected to the positive terminal 106 of the first battery stack unit 100a through the electrical connection device 44; the second contact 4223 of the second switch can be electrically connected to the negative terminal 107 of the first battery stack unit 100a through the electrical connection device 44; the third contact 4224 of the second switch can be electrically connected to the positive terminal 106 of the second battery stack unit 100b through the electrical connection device 44; the fourth contact 4225 of the second switch can be electrically connected to the negative terminal 107 of the second battery stack unit 100b through the electrical connection device 44.

[0053] It is worth mentioning that, in this preferred embodiment of the present invention, the first switch first contact 4212 of the first selection switch 421 and the second switch first contact 4222 of the second selection switch 422 are integrally connected through the electrical connection device 44; the first switch second contact 4213 of the first selection switch 421 and the second switch second contact 4223 of the second selection switch 422 are integrally connected through the electrical connection device 44; the first switch third contact 4214 of the first selection switch 421 and the second switch third contact 4224 of the second selection switch 422 are integrally connected through the electrical connection device 44; the first switch fourth contact 4215 of the first selection switch 421 and the second switch fourth contact 4225 of the second selection switch 422 are integrally connected through the electrical connection device 44.

[0054] like Figure 2As shown, when the fuel cell dual-stack power generation test system performs a single-stack test, the control system 50 sends a control instruction for the single-stack test of the first stack unit 100a to the switch assembly 42, wherein the switch assembly 42 is based on the control instruction of the control system 50, the first selection switch body 4211 of the first selection switch 421 and the first switch first contact 4212 are closed, and the second selection switch body 4221 of the second selection switch 422 and the second switch second contact 4213 are closed, so that the electronic load 41 is electrically connected to the positive terminal 106 and the negative terminal 107 of the first stack unit 100a through the switch assembly 42 and the electrical connection device 44.

[0055] like Figure 3 As shown, when the fuel cell dual-stack power generation test system performs a single-stack test, the control system 50 sends a control instruction for the single-stack test of the second stack unit 100b to the switch assembly 42, wherein the switch assembly 42 is based on the control instruction of the control system 50, the first selection switch body 4211 of the first selection switch 421 and the first switch third contact 4214 contacts are closed, and the second selection switch body 4221 of the second selection switch 422 and the second switch fourth contact 4215 contacts are closed, so that the electronic load 41 is electrically connected to the positive terminal 106 and the negative terminal 107 of the second stack unit 100b through the switch assembly 42 and the electrical connection device 44.

[0056] Preferably, the first relay 423 is a two-way relay, wherein the first relay 423 further includes a first relay body 4231, and the first relay 423 is further provided with a first relay first contact 4232 (i.e., K3M1 in the figure) and a first relay second contact 4233 (i.e., K3M2 in the figure), wherein one end of the first relay body 4231 is connected to the first switch second contact 4213 of the first selection switch 421, and the other end of the first relay body 4231 can be selectively connected to the first relay first contact 4232 and the first relay second contact 4233. The first relay first contact 4232 is connected to the first switch fourth contact 4215 of the first selection switch 421, and the first relay second contact 4233 is connected to the first switch third contact 4214 of the first selection switch 421. The second relay 424 includes a second relay body 4241 and further has a second relay contact 4242, wherein one end of the second relay body 4241 is connected to the second switch third contact 4224 of the second selection switch 422, the second relay contact 4242 is connected to the second switch first contact 4222 of the second selection switch 422, and the second relay body 4241 can be connected to the second relay contact 4242, that is, the second relay 424 is closed. It can be understood that when the second relay body 4241 of the second relay 424 is disconnected from the second relay contact 4242, the second relay 424 is in an open state.

[0057] like Figure 4 As shown, when the fuel cell dual stack power generation test system performs a dual stack series test, the control system 50 sends a control instruction for the dual stack series test to the switch assembly 42. In the series dual stack test, based on the control instruction of the control system 50, the switch assembly 42 closes the first contact 4212 of the first switch by the first selection switch body 4211 of the first selection switch 421, and while ensuring that the second relay 424 remains in an open state, closes the first relay body 4231 of the first relay 423 at the first relay second contact 4233, so that the first stack unit 100a and the second stack unit 100b are connected in series, and closes the second switch body 4221 of the second selection switch 422 at the second switch fourth contact 4225, so that the first stack unit 100a and the second stack unit 100b are connected in series and then connected to the electronic load 41.

[0058] like Figure 5As shown, when the fuel cell dual-stack power generation test system performs a dual-stack parallel test, the control system 50 sends a control instruction for the dual-stack parallel test to the switch assembly 42 . In the dual-stack parallel test, the switch component 42 closes the first selection switch body 4211 of the first selection switch 421 to the first switch first contact 4212 based on the control instruction of the control system 50, and closes the second relay 424, that is, closes the second relay body 4241 to the second relay contact 4242, and then closes the first relay body 4231 of the first relay 423 to the first relay first contact 4232, so that the first battery stack unit 100a and the second battery stack unit 100b are connected in parallel, and closes the second switch body 4221 of the second selection switch 422 to the second switch fourth contact 4225, so that the first battery stack unit 100a and the second battery stack unit 100b are connected in parallel and then connected to the electronic load 41.

[0059] It is understandable that in this preferred embodiment of the present invention, the detection device 43 detects data of the electronic load 41 and the battery stack unit 100 to be detected, such as voltage, current and other data, based on different detection modes. The detection device 43 includes a voltage sensor 431 and a current sensor 432, wherein the voltage sensor 431 and the current sensor 432 are connected to the electronic load 41 through the electrical connection device 44, wherein the voltage sensor 431 detects the voltage across the electronic load 41, and the current sensor 432 detects the current when the electronic load 41 is turned on.

[0060] It can be understood that the electrical connection device 44 extends from the electronic load to the detection station 11 (12) of the battery stack detection platform 10, wherein the electrical connection device 44 can be but is not limited to a wire or a cable.

[0061] like Figure 2As shown, the control system 50 controls the load and control circuit 40 to switch different detection modes, and receives the detection data of the detection device 43 to determine the parameter performance and other data of the battery stack unit 100 to be tested or to determine whether the battery stack unit 100 to be tested meets the detection standards. The control system 50 includes a controller 51 and a display unit 52, wherein the controller 51 is communicatively connected to the display unit 52, wherein the controller 51 sends a control instruction to the load and control circuit 40 to control the load and control circuit 40 to switch the detection mode. The data information detected by the detection device 43 is displayed on the display unit 52 for judging the detection data of the battery stack unit 100 to be tested.

[0062] It is worth mentioning that, in this preferred embodiment of the present invention, the control system 50 is implemented as the host computer of the fuel cell dual stack power generation detection system, wherein the control system 50 controls the set parameters in the test system. Accordingly, the load and control circuit 40 is implemented as a lower computer corresponding to the control system 50, wherein the load and control circuit 40 receives the control signal of the control system 50 and performs corresponding operations according to the control signal, that is, switching the detection mode. According to one or more embodiments, the controller 51 is executed by a microprocessor programmed to perform one or more operations and / or functions described herein. According to one or more embodiments, the controller is executed in whole or in part by specially configured hardware, for example, by one or more application specific integrated circuits or ASIC(s). It is understandable that the display unit 52 is implemented as a display, such as LCD, OLED, plasma, CRT, etc. It is worth mentioning that, in this preferred embodiment of the present invention, the specific implementation of the display unit 52 is only exemplary and not restrictive.

[0063] like Figure 1A and Figure 1BAs shown, the hydrogen supply assembly 20 includes a hydrogen supply device 21 and at least one hydrogen pipeline 22, wherein the two stack units 100 can be connected to the hydrogen supply device 21 through the hydrogen pipeline 22, that is, the hydrogen supply device 21 provides fuel hydrogen to the stack unit 100 through the hydrogen pipeline 22. The hydrogen pipeline 22 can be conductively connected to the hydrogen inlet end 102 of the two stack units 100. The hydrogen supply assembly 20 further includes at least two hydrogen inlet valves 23, two pressure sensors 24 and two temperature sensors 25, wherein the hydrogen inlet valves 23, the two pressure sensors 24 and the two temperature sensors 25 are arranged on the hydrogen pipeline 22. The hydrogen inlet valve 23 controls the opening and closing of the channel of the hydrogen pipeline 22 leading to the stack unit 100, the temperature sensor 25 detects the hydrogen temperature leading to the stack unit 100, and the pressure sensor 24 detects the hydrogen pressure leading to the stack unit 100. It is worth mentioning that the hydrogen inlet valve 23 may be, but is not limited to, a regulating valve or other types of valves. It is understandable that the hydrogen supply device 21 of the hydrogen supply assembly 20 may be, but is not limited to, a hydrogen storage tank.

[0064] The oxygen supply assembly 30 includes an air collecting device 31 and at least one air duct 32, wherein the two stack units 100 can be connected to the air collecting device 31 through the air duct 32, and the air collecting device 31 passes air to the two stack units 100 through the air duct 32. Preferably, in this preferred embodiment of the present invention, the air collecting device 31 can be but not limited to a blower, and in other optional embodiments of the present invention, the air collecting device 31 can also be implemented as other types of blowing devices. The air duct 32 can be connected to the air inlet end 104 and the air outlet end 105 of the stack unit 100. The oxygen supply assembly 30 further includes two air intake valves 33 and at least one humidifier 34, wherein the two air intake valves 33 and the at least one humidifier 34 are connected in series to the air collecting device 31 through the air duct 32, wherein the air collected by the air collecting device 31 passes through the humidifier 34 and the air intake valve 33 to the stack unit 100. The air intake valve 33 is used to control the on-off of the air duct 32, and the humidifier 34 is used to increase the humidity of the air in the air duct 32. It is worth mentioning that the air intake valve 33 can be, but is not limited to, a valve body such as a regulating valve or a solenoid valve.

[0065] The oxygen supply component 30 further includes two oxygen supply pressure sensors 35 and two oxygen supply temperature sensors 36, wherein the oxygen supply pressure sensor 35 and the oxygen supply temperature sensor 36 are arranged in the air duct 32, wherein the oxygen supply pressure sensor 35 is used to detect the air pressure in the air duct 32 leading to the battery stack unit 100; the oxygen supply temperature sensor 36 is used to detect the air temperature in the air duct 32 leading to the battery stack unit 100.

[0066] It is worth mentioning that in this preferred embodiment of the present invention, the stack unit 100 to be tested is an air-cooled fuel cell stack unit, that is, the stack unit 100 dissipates heat by air cooling. Accordingly, the fuel cell dual-stack power generation detection system further includes a heat dissipation component 60, which is disposed on the stack test platform 10 in a manner adjacent to the detection station, wherein the heat dissipation component 60 dissipates heat for the stack unit 100 to be tested to maintain the normal operation of the stack unit 100.

[0067] The heat dissipation assembly 60 includes a power supply unit 61, and at least two fans 62 (a first fan unit 62a and a second fan unit 62b) electrically connected to the power supply unit 61, wherein the fan 62 is disposed on the battery stack test platform 10, and the fan 62 is adjacent to the detection station of the battery stack test platform 10. The fan 62 dissipates heat from the battery stack unit 100 at the detection station by blowing air toward the detection station or blowing air away from the detection station.

[0068] It is worth mentioning that the power supply unit 61 provides the electric energy required for the fan 62 to work. It is understandable that the power supply unit 61 can be, but is not limited to, an AC power supply, a DC power supply, or a rechargeable battery, etc. The gas collecting device 31 of the oxygen supply assembly 30 is electrically connected to the power supply unit 61, that is, the power supply unit 61 provides the electric energy required for the gas collecting device 31 to work.

[0069] like Figure 1A and Figure 1B As shown, the fuel cell dual-stack power generation detection system further includes two stack inspection devices 70, which are conductively connected to the stack unit 100, and the stack inspection device 70 is electrically connected to the power supply unit 61, and the power supply unit 61 provides the power required for the stack inspection device 70 to work. The stack inspection device 70 is also communicatively connected to the control system 50, and the data information detected by the stack inspection device 70 is transmitted to the control system 50, so that the control system 50 can judge the performance of the stack unit 100 based on the data information detected by the stack inspection device 70.

[0070] The stack inspection device 70 collects the voltage signal of the single cell of the stack unit 100 (or the total voltage of the stack) and sends it to the controller 51. By checking the single cell voltage signal, the working state of the stack unit 100 is judged to judge the working performance of the stack unit 100. The voltage inspection device 70 is connected to the single cell of the stack unit 100 through the inspection signal acquisition line to realize voltage collection. During the voltage inspection, it is transmitted to the communication tool through the inspection communication harness, and finally connected to the host computer through the communication tool to directly monitor or record the collected stack single cell voltage. Preferably, in this preferred embodiment of the present invention, the stack inspection device 70 is a fuel cell stack inspection (CVM).

[0071] The fuel cell dual stack power generation detection system further includes an exhaust assembly 80, which can be conductively connected to the hydrogen outlet end 103 of the stack unit 100, that is, the hydrogen outlet end 103 of the stack unit 100 discharges the generated waste gas and water through the exhaust assembly 80. The exhaust assembly 80 includes a gas-liquid separator 81 and at least one exhaust pipe 82, wherein the hydrogen outlet end 103 of the stack unit 100 can recycle the generated water and unreacted gas to the gas-liquid separator 81 through the exhaust pipe 82, and then the gas-liquid separator 81 separates and / or recycles the unreacted hydrogen.

[0072] The exhaust assembly 80 further includes two exhaust valves 83 , which are disposed between the exhaust pipe 82 and the gas-liquid separator 81 to control the on-off of the exhaust pipe 82 .

[0073] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. A fuel cell dual stack power generation detection system, suitable for detecting two fuel cell stack units, the fuel cell dual stack power generation detection system comprising: A battery stack detection platform, wherein the battery stack detection platform is provided with two detection stations for fixing the two battery stack units; a hydrogen supply component and an oxygen supply component, which are conductively connected to the two stack units, the hydrogen supply component provides hydrogen to the two stack units, and the oxygen supply component provides oxygen to the two stack units; and A load and control circuit, wherein the load and control circuit has a single-stack detection mode, a dual-stack parallel detection mode, and a dual-stack series detection mode, and the load and control circuit switches between the single-stack detection mode, the dual-stack parallel detection mode, and the dual-stack series detection mode, so that the load and control circuit detects the operating data of the two-stack unit in the single-stack detection mode, the dual-stack series detection mode, and the dual-stack parallel detection mode, wherein the load and control circuit includes an electronic load, at least one switch component, at least one detection device, and at least one electrical connection device, wherein the switch component and the detection device are electrically connected to the electrical connection device through the electrical connection device The electronic load, the switch component is adjustable to control the connection mode of the electrical connection device, so that when the battery stack unit is electrically connected to the electronic load through the electrical connection device, the switch component switches the detection mode between the two battery stack units and the electronic load by controlling the connection mode of the electrical connection device, wherein the switch component includes a first selection switch and a second selection switch, wherein the first selection switch and the second selection switch are connected in series to the electronic load, and the performance data of the two battery stack units in the single stack detection mode are individually detected by the closed contact combination of the first selection switch and the second selection switch, wherein the switch component further includes a first selection switch and a second selection switch. A relay and a second relay, wherein the first relay is connected to the contact of the first selection switch, and the second relay is connected to the contact of the second selection switch, wherein the performance data of the two-stack unit in the dual-stack series detection mode and the dual-stack parallel detection mode are detected by the contact combination between the first selection switch, the second selection switch, the first relay and the second relay, wherein the first selection switch includes a first selection switch body and further has a first switch first contact, a first switch second contact, a first switch third contact, and a first switch fourth contact, wherein the first selection switch body can selectively connect the first switch The first contact of the first switch, the second contact of the first switch, the third contact of the first switch, or the fourth contact of the first switch, the first selection switch body is connected to the electronic load through the electrical connection device; the first contact of the first switch can be electrically connected to a positive terminal of the first battery stack unit through the electrical connection device; the second contact of the first switch can be electrically connected to a negative terminal of the first battery stack unit through the electrical connection device; the third contact of the first switch can be electrically connected to a positive terminal of the second battery stack unit through the electrical connection device; the fourth contact of the first switch can be electrically connected to a negative terminal of the second battery stack unit through the electrical connection device;The second selection switch includes a second selection switch body, and further has a second switch first contact, a second switch second contact, a second switch third contact, and a second switch fourth contact. The second selection switch body is connected to the electronic load through the electrical connection device; the second switch first contact can be electrically connected to the positive terminal of the first battery stack unit through the electrical connection device; the second switch second contact can be electrically connected to the negative terminal of the first battery stack unit through the electrical connection device; the second switch third contact can be electrically connected to the positive terminal of the second battery stack unit through the electrical connection device; the second switch fourth contact can be electrically connected to the negative terminal of the second battery stack unit through the electrical connection device. ; 2. The fuel cell dual-stack power generation test system according to claim 1 further includes a control system, which is communicatively connected to the load and the control circuit, and the control system sends control instructions to the switch component of the load and the control circuit, wherein the switch component adjusts the detection mode based on the control instruction of the control system, and the detection device is communicatively connected to the control system, and the control system determines the detection results of the two stack units based on the detection data of the detection device.

3. The fuel cell dual-stack power generation test system according to claim 1, wherein when the fuel cell dual-stack power generation test system performs a single stack test, the first selection switch body of the first selection switch is closed at the first contact of the first switch, and the second selection switch body of the second selection switch is closed at the second contact of the second switch, so that the electronic load is electrically connected to the first stack unit through the switch assembly and the electrical connection device.

4. A fuel cell dual-stack power generation test system according to claim 1 or 3, wherein when the fuel cell dual-stack power generation test system performs a single stack test, the first selection switch body of the first selection switch is closed at the third contact of the first switch, and the second selection switch body of the second selection switch is closed at the fourth contact of the second switch, so that the electronic load is electrically connected to the second stack unit through the switch assembly and the electrical connection device.

5. The fuel cell dual-stack power generation test system according to claim 1, wherein the first relay further includes a first relay body and is further provided with a first relay first contact and a first relay second contact, wherein one end of the first relay body is connected to the first switch second contact of the first selection switch, and the other end of the first relay body can be selectively connected to the first relay first contact and the first relay second contact, the first relay first contact is connected to the first switch fourth contact of the first selection switch, and the first relay second contact is connected to the first switch third contact of the first selection switch, wherein the second relay includes a second relay body and is further provided with a second relay contact, wherein one end of the second relay body is connected to the second switch third contact of the second selection switch, the second relay contact is connected to the second switch first contact of the second selection switch, and the second relay body can be connected to the second relay contact.

6. The fuel cell dual-stack power generation test system according to claim 5, wherein when the fuel cell dual-stack power generation test system performs a dual-stack series test, the first selection switch body of the first selection switch closes the first contact of the first switch, and while ensuring that the second relay remains in an open state, the first relay body of the first relay is closed at the second contact of the first relay, so that the two stack units are connected in series, and the second switch body of the second selection switch is closed at the fourth contact of the second switch, so that the two stack units are connected in series with the electronic load.

7. A fuel cell dual-stack power generation test system according to claim 5 or 6, wherein when the fuel cell dual-stack power generation test system performs a dual-stack parallel test, the first selection switch body of the first selection switch is closed to the first contact of the first switch, and while ensuring that the first relay and the first relay body are disconnected from the second contact of the first relay, the second relay body is closed at the second relay contact, and then the first relay body of the first relay is closed at the first contact of the first relay, so that the two stack units are connected in parallel, and the second switch body of the second selection switch is closed at the fourth contact of the second switch, so that the two stack units are connected to the electronic load.

8. The fuel cell dual stack power generation test system according to claim 2, wherein the detection device comprises a voltage sensor and a current sensor, wherein the voltage sensor and the current sensor are connected to the electronic load through the electrical connection device.

9. The fuel cell dual-stack power generation test system according to claim 2 further comprises a heat dissipation assembly, wherein the heat dissipation assembly comprises a power supply unit and at least two fans electrically connected to the power supply unit, wherein the fan is arranged on the stack test platform, and the fan is adjacent to the detection station of the stack test platform.

10. The fuel cell dual-stack power generation test system according to claim 2 further comprises two stack inspection devices, which are conductively connected to the stack unit, and are also communicatively connected to the control system, and the data information detected by the stack inspection device is transmitted to the control system.

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