Hydrogen fuel cell stack testing device

Abstract

The utility model provides a hydrogen fuel cell stack testing device which comprises a fixing assembly used for limiting and placing a to-be-tested stack; the guide assembly is arranged on the fixing assembly and is used for providing a running track for the linear motion of the probe assembly; and the probe assembly is connected with the guide assembly. According to the utility model, the structure is simple, the operation is convenient, the synchronous insertion of all probes can be realized through the design of the guide assembly and the probe assembly, the time for manually inserting the probes one by one is saved, and the installation efficiency of the probes is improved, so that the overall efficiency of the galvanic pile test can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen fuel cells, and in particular to a hydrogen fuel cell stack testing device. Background Art

[0002] Hydrogen fuel cells are power generation devices that directly convert the chemical energy of hydrogen and oxygen into electrical energy. They are not limited by the Carnot cycle effect, so they are highly efficient. And their raw materials are hydrogen and oxygen, and they have no mechanical transmission parts, so they are also pollution-free and noise-free. Therefore, from the perspective of energy conservation and ecological environment protection, hydrogen fuel cells are the most promising power generation technology, and they can be widely used in large-scale power station power generation, portable mobile power supplies, aircraft, automobiles, aerospace and other fields in the future.

[0003] Hydrogen fuel cell stacks are usually composed of multiple single cells stacked in series. They are the core components of hydrogen fuel cell systems and maintain the energy output process of the entire fuel cell system. Therefore, the activation and detection of fuel cell stacks are necessary links in the production process of fuel cell stacks. Among all the parameters that characterize the operating status of fuel cell stacks, the voltage value of a single cell can best reflect its current status. It is an important basis for online monitoring and rapid diagnosis of fuel cell stacks.

[0004] Usually, the voltage detection of a single cell is mainly achieved by using a probe. When measuring the single cell voltage of a fuel cell, it is traditionally necessary to manually insert N+1 probes into the inspection holes of N battery cells in sequence, so the operation is cumbersome and time-consuming, which seriously affects the production efficiency. Therefore, how to ensure that the probe can be quickly and accurately inserted into each single cell of a fuel cell stack of different specifications to meet the detection requirements of fuel cell stacks of different specifications and to shorten the time for installing the voltage measurement probe as much as possible, thereby improving the overall efficiency of the stack test, is a major research direction for technicians in this field. Utility Model Content

[0005] The purpose of the utility model is to overcome the defects of the prior art and provide a hydrogen fuel cell stack test device, which can shorten the time for installing the voltage measurement probe and improve the overall efficiency of the stack test.

[0006] In order to achieve the above purpose and other purposes, the utility model is implemented by including the following technical solutions: The utility model proposes a hydrogen fuel cell stack testing device, which is characterized in that it includes a fixed component for limiting the placement of the stack to be tested; a guide component, which is installed on the fixed component and is used to provide a running track for the linear motion of the probe component; the probe assembly is connected to the guide assembly.

[0007] In one embodiment, the hydrogen fuel cell stack testing device also includes a quick clamp fixedly mounted on a side column of the fixed assembly, and the pressure arm end of the quick clamp is arranged directly in front of the front end face of the probe assembly; the guide assembly includes a guide screw, a spring and a limit nut, one end of the guide screw is fixed to the fixed assembly, the spring is sleeved on one end of the guide screw, and the limit nut is sleeved on the other end of the guide screw; the upper and lower ends of the probe assembly are respectively slidably mounted on the two guide screws, and the upper and lower ends of the probe assembly are located between the spring and the limit nut.

[0008] In this scheme, when the handle end of the quick clamp is pressed backward, the pressure arm end of the quick clamp simultaneously pushes the probe assembly backward, and the probe assembly moves backward under the guidance of the guide assembly after being subjected to force, and compresses the spring. When the probe of the probe assembly is inserted into and contacts the corresponding designated position of each single cell plate in the battery stack to be tested, the quick clamp completes self-locking, and the hydrogen fuel cell stack testing device is in a waiting state; when the test is completed, the handle end of the quick clamp is pushed forward to unlock, and the pressure arm end of the quick clamp simultaneously releases the probe assembly forward, and the pressure on the spring is released and rebounds, so that the probe assembly moves forward to the limit nut under the action of the rebound force and the guidance of the first guide assembly. At this time, the probe of the probe assembly leaves each single cell plate of the battery stack to be tested.

[0009] Through this design, all probes on the probe assembly can be inserted and removed synchronously, saving the time of manually inserting and removing the probes one by one, and improving the installation efficiency of the probes.

[0010] Furthermore, the guide assembly also includes a linear guide rail and a slider, the linear guide rail is fixedly mounted on the fixed assembly, one end of the slider is slidably mounted on the linear guide rail, and the other end of the slider is fixedly connected to the probe assembly.

[0011] Through this design scheme, a slide rail guide can be provided for the movement of the probe assembly, which can effectively reduce the friction of the front and rear linear motion of the probe assembly, making the operation more labor-saving and further improving the installation efficiency of the probe.

[0012] Furthermore, the linear guide rail and the slider are symmetrically mounted on the fixed assembly.

[0013] This solution can further ensure the smooth sliding of the probe assembly by designing two sets of guide rails consisting of linear guide rails and sliders.

[0014] Furthermore, the quick clamp is provided with one, and the quick clamp is arranged between the two linear guide rails.

[0015] Alternatively, three quick clamps are provided, and the three quick clamps are arranged at equal intervals from the two linear guide rails. This solution uses three quick clamps to make the force on the probe assembly more uniform, so that the depth of the probe entering the battery stack to be tested is more uniform.

[0016] In one embodiment, the guide assembly includes a linear drive device, which is fixedly mounted below the fixed assembly via a mounting frame; the lower end of the probe assembly is fixed to the movable end of the linear drive device, and the probe assembly moves linearly following the movable end.

[0017] In this scheme, by driving the linear drive device to operate, the active end of the linear drive device can drive the probe assembly to move backward under electricity until the probe is inserted into and contacts the corresponding designated position of each single cell plate in the battery stack to be tested, thereby completing the needle insertion and putting the hydrogen fuel cell stack testing device in a waiting state; when the test is completed, the active end of the linear drive device drives the probe assembly to move forward under electricity again, so that the probe leaves the single cell plates of the battery stack to be tested, thereby completing the needle withdrawal.

[0018] Through this design, all probes on the probe assembly can be automatically inserted and removed synchronously, thereby improving the installation efficiency of the probes; at the same time, manual operation can be completely eliminated, making the operation simpler and more convenient.

[0019] Furthermore, the linear drive device is a linear module or an electric push rod.

[0020] In one embodiment, through screw holes are respectively provided at corresponding positions on the first upper cross beam and the first lower cross beam of the fixing assembly, and the screw holes are used to install locking screws.

[0021] The design of this solution can realize the covering and positioning of the six degrees of freedom of the battery stack to be tested by the fixing component, so that the battery stack to be tested can be limited and fixed during the test process, which is more conducive to the implementation of the test.

[0022] In one embodiment, the probe assembly includes a pressure plate, a PCB board and a probe, the pressure plate is connected to the guide assembly; the PCB board is fixedly connected to the rear end surface of the pressure plate; the probe is a flexible structure with a built-in spring, arranged at one end of the PCB board away from the pressure plate, and the probe is electrically connected to an external test data collector through the PCB board.

[0023] The design of this solution can ensure that when the probe accidentally touches a hard material, the probe will retract to avoid damaging the single cell plate on the battery stack to be tested. In addition, the built-in spring can store potential energy to provide contact pressure with the battery stack, and the contact point pressure between the probe and the battery stack is determined by the characteristics of the spring.

[0024] In summary, compared with the prior art, the utility model can realize the synchronous insertion of all probes through the design of the guide assembly and the probe assembly, which saves the time of manually inserting the probes one by one, improves the installation efficiency of the probes, and thus improves the overall efficiency of the battery stack test; in the first embodiment, a guide screw and a spring are provided in the guide assembly, and a quick clamp is used to drive the probe assembly to perform a linear motion on the guide screw, and the spring can realize rapid and automatic return, thereby improving the efficiency of probe removal; and the quick clamp is simple to operate, with low requirements for the operator, and both novices and experienced operators can operate it quickly, and it is very convenient to use; in the second embodiment, the guide assembly is set as a linear drive device, which can realize full automation of the synchronous insertion of the probes, which is more efficient and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Shown is a three-dimensional structural schematic diagram of a first embodiment of a hydrogen fuel cell stack testing device of the utility model.

[0026] Figure 2 Shown is an exploded view of the main structure of a first embodiment of a hydrogen fuel cell stack testing device of the utility model.

[0027] Figure 3 Shown is a left view of a first embodiment of a hydrogen fuel cell stack testing device of the utility model.

[0028] Figure 4 Shown is a front view of a first embodiment of a hydrogen fuel cell stack testing device of the utility model.

[0029] Figure 5 Shown is a three-dimensional structural schematic diagram of the probe guide plate assembly in the present invention.

[0030] Figure 6 Shown is a schematic diagram of the probe insertion state of the second embodiment of a hydrogen fuel cell stack testing device of the utility model.

[0031] Figure 7 Shown is a schematic diagram of a probe withdrawal state of a second embodiment of a hydrogen fuel cell stack testing device of the utility model.

[0032] Figure 8 It shows a schematic diagram of the structure of a guide assembly in the second embodiment of a hydrogen fuel cell stack testing device of the utility model. DETAILED DESCRIPTION

[0033] See also Figures 1 to 8 The following describes the implementation of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0034] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification for the technical personnel in this field to understand and read, and are not used to limit the restrictive conditions for the implementation of the utility model. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed by the utility model without affecting the effects and purposes that can be achieved by the utility model.

[0035] In the present invention, the terms "upper", "lower", "left", "right", "front" and "rear" etc. indicating directions or positional relationships are only for the purpose of clearly describing the present invention, and are not intended to indicate or imply that the structures or components referred to must have a specific direction or be constructed in a specific direction, and therefore cannot be understood as limiting the present invention. The serial numbers assigned to the components in this specification, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The term "connection" in the present invention includes both direct and indirect connections unless otherwise specified.

[0036] Embodiment 1

[0037] like Figure 1 As shown, the utility model provides a hydrogen fuel cell stack test device 100, including a base 110, a fixing assembly 120, a guide assembly, a probe assembly 150 and a quick clamp 160. The fixing assembly 120 can be installed on the base 110; the guide assembly includes a first guide assembly 130 and a second guide assembly 140, and the first guide assembly 130, the second guide assembly 140, the probe assembly 150 and the quick clamp 160 are all installed on the fixing assembly 120.

[0038] The height of the fixing assembly 120 and the number of probes on the probe assembly 150 can be adjusted according to the requirements of the battery stack 200 to be tested of different specifications.

[0039] The base 110 is mainly provided to accommodate the portion of the tested battery stack 200 that is exposed from the fixed assembly 120 and to increase the placement height of the fixed assembly 120. Since a hydrogen line and a water line are usually connected to the bottom of the tested battery stack 200, the base 110 can raise the tested battery stack 200, which is beneficial to the connection between the battery stack and the pipeline.

[0040] Please combine Figure 1 and Figure 2 The fixing assembly 120 is used to limit the position of the test stack 200, and includes an upper frame 121, a lower frame 122 and four columns that can clamp the test stack 200. The upper frame 121 and the lower frame 122 are fixedly connected by the four columns. The test stack 200 can be placed into the fixing assembly 120 from the upper frame 121, and the columns and the lower frame 122 of the fixing assembly 120 can clamp the five surfaces of the test stack 200, forming a five-degree-of-freedom covering positioning for the test stack 200. Furthermore, the upper frame 121 includes a first upper crossbeam 1211, and the lower frame 122 includes a first lower crossbeam 1221, and the first upper crossbeam 1211 and the first lower crossbeam 1221 are coplanar; a through screw hole 171 is respectively provided at corresponding positions on the first upper crossbeam 1211 and the first lower crossbeam 1221, and the corresponding position may be a midpoint, and the screw hole 171 is used for movably installing a locking screw 172. Tighten the locking screw 172, and when the upper and lower locking screws 172 respectively support the upper and lower end plates of the battery stack 200 to be tested, the upward freedom of the battery stack 200 to be tested is also restricted. Therefore, the design of the fixing assembly 120 and the locking screw 172 can limit and fix the battery stack 200 to be tested during the test, which is more conducive to the implementation of the test.

[0041] Specifically, the two columns coplanar with the first upper beam 1211 and the first lower beam 1221, the first upper beam 1211 and the first lower beam 1221 together form the operation frame 123 of the fixing assembly 120. The operation of tightening the locking screw 172 and the operation of inserting the probe described below are both performed on the operation frame 123.

[0042] Please combine Figure 1 and Figure 2The two groups of the second guide components 140 are respectively installed on the first upper beam 1211 and the first lower beam 1221 perpendicular to the operation frame surface 123 , and are used to provide a guide track and rebound force for the linear motion of the probe component 150 . Taking the second guide assembly 140 on the first upper beam 1211 as an example, the second guide assembly 140 may include a guide screw 141, a spring 142 and a limit nut 143, one end of the guide screw 141 is fixed on the first upper beam 1211; the spring 142 is sleeved on the guide screw 141, and the spring 142 is placed between the first upper beam 1211 and the probe assembly 150 through the guide screw 141. After the probe assembly 150 is subjected to the pressure of the quick clamp 160, it can move linearly backward along the guide screw 141, and obtain the rebound force for forward linear movement by compressing the spring 142; the limit nut 143 is sleeved on the other end of the guide screw 141, and is used to limit the displacement of the probe assembly 150.

[0043] Please combine Figure 1 and Figure 2 The first guide assembly 130 is mounted on a side column of the operating frame 123, and is used to further provide a running track for the linear motion of the probe assembly 150, so as to ensure that the probe assembly 150 can slide stably in the front-rear direction. Specifically, the first guide assembly 130 may include a linear guide rail 131 and a slider 132. The linear guide rail 131 is fixedly mounted on a side column of the operating frame 123 through a guide rail bracket 133. Figure 3 , the linear guide 131 and the guide bracket 133 are arranged perpendicular to the operating frame surface 123. One end of the slider 132 is slidably installed on the linear guide 131, and the other end of the slider 132 is fixedly connected to the probe assembly 150. In this embodiment, the first guide assembly 130 is designed with two symmetrical groups, which can further ensure the smoothness of the sliding of the probe assembly 150, but this is not necessary. In theory, only one group of the first guide assembly 130 can be designed to provide a running track for the linear motion of the probe assembly 150. In addition, when the battery stack 200 and the probe assembly 150 to be tested are particularly long, 2 or more groups of the first guide assembly 130 can also be designed.

[0044] Please combine Figure 1 , Figure 2 and Figure 3 The left end of the probe assembly 150 is fixedly connected to the other end of the slider 132, and the upper and lower ends are slidably mounted on the two guide screws 141 and located between the spring 142 and the limit nut 143. Figure 5The probe assembly 150 may include a pressure plate, a PCB board 153 and a probe 154. The pressure plate may include a first pressure plate 151 and a second pressure plate 152. The left end surface of the first pressure plate 151 may be fixedly connected to the slider 132. The upper and lower ends of the first pressure plate 151 may be respectively provided with through holes 1511, and the through holes 1511 are used to vertically sleeve the first pressure plate 151 on the two guide screws 141. The second pressure plate 152 is first fixedly connected to the PCB board 153, and then fixedly connected to the first pressure plate 151. The second pressure plate 152 is provided with a waist-shaped oblong hole 1521, which can be used to adjust the installation position of the probe 154 so that the probe 154 can be accurately docked with the battery stack to be tested. The probe 154 is arranged at one end of the PCB board 153 away from the pressure plate, and is electrically connected to an external test data collector through the PCB board 153 to realize automatic collection of test data. The spacing between two adjacent probes 154 can be designed according to the spacing between the single cell plates on the tested battery stack 200. The probe 154 can be flexible, for example, with a built-in small spring, to ensure that when the probe 154 is pressed backward, the probe 154 will retract backward to avoid damaging the single cell plates on the tested battery stack 200 by hard collision.

[0045] Please review Figure 2 The quick clamp 160 is fixedly mounted on a side column of the operating frame surface 123 through a mounting bracket 161, and the pressure arm end of the quick clamp 160 is arranged in front of the front end surface of the probe assembly 150 (see Figure 4 ), when the handle end of the quick clamp 160 is pressed backward, the pressure arm end of the quick clamp 160 simultaneously pushes the probe assembly 150 backward, so that the probe 154 is inserted into and contacts the corresponding designated position of each single cell plate in the battery stack 200 to be tested. The quick clamp 160 is a product purchased from the market, and its specific structure and working principle are prior art, which will not be repeated here.

[0046] It should be noted that three quick clamps 160 (including mounting brackets 161) are used in this embodiment. This design is to make the force on the probe assembly 150 more uniform, so that the depth of the probe 154 entering the tested battery stack 200 is more uniform. After trial installation, when only one quick clamp 160 is used, the purpose of synchronously pressing down all the probes 154 can also be achieved.

[0047] The working process of the hydrogen fuel cell stack testing device 100 provided in the first embodiment of the utility model is: when testing is required, firstly, the stack 200 to be tested is placed in the fixing assembly 120; then, the upper and lower locking screws 172 are screwed until they support the upper and lower end plates of the stack 200 to be tested; secondly, the handle end of the quick clamp 160 is pressed backward and downward, so that the pressure arm end of the quick clamp 160 synchronously pushes the probe assembly 150 backward, and the probe assembly 150 moves backward along the linear guide rail 131 under the guidance of the slider 132 after being subjected to force, and compresses the spring 142, and when the probe 154 on the probe assembly 150 is inserted into and contacts the corresponding designated position of each single cell plate in the stack 200 to be tested, the quick clamp 160 completes self-locking, and the testing device 100 is in a waiting state; the test data is collected by operating external equipment. When the test is completed, the handle end of the quick clamp 160 is pushed forward to unlock it. At this time, the pressure arm end of the quick clamp 160 simultaneously releases the probe assembly 150 forward, and the pressure on the spring 142 is released and rebounds. Under the action of the rebound force, the probe assembly 150 is guided by the slider 132 and moves forward along the linear guide rail 131 to the limit nut 143. At this time, the probe 154 leaves the single battery plates of the battery stack 200 to be tested; after loosening the upper and lower locking screws 172, the battery stack that has completed the test can be taken out.

[0048] In summary, the first embodiment of the utility model has a simple structure and is easy to operate. The design of the second guide assembly 140 and the quick clamp 160 can realize the synchronous insertion of all the probes 154, saving the time of inserting the probes 154 one by one manually, and improving the installation efficiency of the probes 154; and the quick clamp 160 is easy to operate, has low requirements for operators, and can be quickly operated by both novices and experienced operators, and is very convenient to use. In addition, the design of the fixing assembly 120 and the locking screw 172 can realize the covering positioning of the battery stack 200 to be tested, making the battery stack 200 to be tested more stable during the test, and preventing the probe 154 from loosening with the battery stack 200 to be tested during the test.

[0049] Embodiment 2

[0050] like Figure 6 and Figure 7 As shown in the figure, the utility model provides a hydrogen fuel cell stack test device 300, including a fixing assembly 310, a guide assembly 320 and a probe assembly 330. The fixing assembly 310 is used to limit the position of the test stack 200. Although the fixing assembly 310 shown in the figure is in the shape of a bracket, the fixing assembly 310 can also be Figure 1 and Figure 2The structure of the fixing assembly 120 is provided with a base for raising. The guide assembly 320 is installed below the fixing assembly 310 ; the probe assembly 330 is installed on the guide assembly 320 .

[0051] The design of the probe assembly 330 is similar to that of the first embodiment of the present invention, and will not be described in detail here. It should be noted that in this embodiment, since the connection method and position of the guide assembly 320 and the probe assembly 330 have changed, the upper and lower ends of the first pressing plate of the probe assembly 330 can be exempted from the need to provide through holes for fitting the guide screw.

[0052] Please combine again Figure 8 The guide assembly 320 includes a linear drive device 321 and a mounting frame 322. The linear drive device 321 is fixedly mounted below the fixed assembly 320 through the mounting frame 322. The lower end of the probe assembly 330 is fixed on the movable end 3211 of the linear drive device 321, and the probe assembly 330 moves linearly following the movable end 3211.

[0053] Specifically, the linear drive device 321 may be Figure 8 The linear module shown in the figure comprises a linear rail 3212 and a movable end 3211, wherein the movable end 3211 is a slide, and the lower end of the probe assembly 330 is fixedly connected to the movable end 3211 through a connecting member 323, and the movable end 3211 drives the probe assembly 330 to move linearly along the linear rail 3212 under electric drive. Furthermore, a pressure spring 325 is arranged near the connection between the connecting member 323 and the lower end of the probe assembly 330, and a slide plate 324 is connected to the upper end of the pressure spring 325, and the end of the slide plate 324 away from the pressure spring 325 is fixed to the mounting frame 322, and a slide groove 3241 is provided on the slide plate 324, and the slide groove 3241 is used to provide space for the movement of the probe assembly 330. The design of the pressure spring 325 can provide a certain elastic displacement space up and down for the probe assembly 330, so that the probe of the probe assembly 330 can be accurately docked with the battery stack 200 to be tested. In addition, a limiter 3213 is provided on the linear track 3212, and a protrusion 3214 is provided on the movable end 3211, and the probe is fixed on the movable end 3211. The cooperation between the limiter 3213 and the protrusion 3214 limits the horizontal movement range of the probe.

[0054] In addition, although not shown in the figure, in some other embodiments, the linear drive device 321 can also be designed as an electric push rod. In this case, the movable end of the linear drive device is the push rod, and the lower end of the probe assembly 330 is connected to the push rod.

[0055] In summary, the second embodiment of the present invention sets the guide assembly as a linear drive device, which can achieve full automation of synchronous insertion of the probe, which is more efficient and convenient.

[0056] Therefore, the utility model effectively overcomes various shortcomings in the prior art and has a high industrial utilization value. The above embodiments are only illustrative of the principles and effects of the utility model, and are not used to limit the utility model. Anyone familiar with this technology can modify or change the above embodiments without violating the spirit and scope of the utility model. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the relevant technical field without departing from the spirit and technical ideas disclosed by the utility model should still be covered by the claims of the utility model.

Claims

1. A hydrogen fuel cell stack testing device, characterized in that: include Fixed components, used to limit the placement of the battery stack to be tested; A guide assembly, mounted on the fixed assembly, for providing a running track for the linear motion of the probe assembly; The probe assembly is connected to the guide assembly.

2. The hydrogen fuel cell stack testing device according to claim 1, characterized in that: It also includes a quick clamp, which is fixedly mounted on a side column of the fixing assembly, and the pressure arm end of the quick clamp is arranged just in front of the front end surface of the probe assembly; the guide assembly includes a guide screw, a spring and a limit nut, one end of the guide screw is fixed to the fixing assembly, the spring is sleeved on one end of the guide screw, and the limit nut is sleeved on the other end of the guide screw; the upper and lower ends of the probe assembly are respectively slidably mounted on the two guide screws, and the upper and lower ends of the probe assembly are located between the spring and the limit nut.

3. The hydrogen fuel cell stack testing device according to claim 2, characterized in that: The guide assembly also includes a linear guide rail and a slider. The linear guide rail is fixedly mounted on the fixed assembly. One end of the slider is slidably mounted on the linear guide rail, and the other end of the slider is fixedly connected to the probe assembly.

4. The hydrogen fuel cell stack testing device according to claim 3, characterized in that: The linear guide rail and the slide block are symmetrically mounted on the fixed assembly.

5. The hydrogen fuel cell stack testing device according to claim 4, characterized in that: The quick clamp is provided with one, and the quick clamp is arranged between the two linear guide rails.

6. The hydrogen fuel cell stack testing device according to claim 4, characterized in that: The three quick clamps are arranged in number, and the three quick clamps are arranged at equal intervals from the two linear guide rails.

7. The hydrogen fuel cell stack testing device according to claim 1, characterized in that: The guide assembly includes a linear drive device, which is fixedly mounted below the fixed assembly via a mounting frame; the lower end of the probe assembly is fixed to the movable end of the linear drive device, and the probe assembly moves linearly following the movable end.

8. The hydrogen fuel cell stack testing device according to claim 7, characterized in that: The linear drive device is a linear module or an electric push rod.

9. The hydrogen fuel cell stack testing device according to claim 1, characterized in that: Through screw holes are respectively provided at corresponding positions on the first upper crossbeam and the first lower crossbeam of the fixing assembly, and the screw holes are used to install locking screws.

10. The hydrogen fuel cell stack testing device according to claim 1, characterized in that: The probe assembly comprises a pressing plate, a PCB board and a probe, and the pressing plate is connected to the guide assembly; The PCB board is fixedly connected to the rear end surface of the pressing plate; the probe is a flexible structure with a built-in spring, which is arranged at one end of the PCB board away from the pressing plate, and the probe is electrically connected to an external test data collector through the PCB board.

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