Method and device for detecting temperature and humidity in any position of fuel cell stack in partitioned manner

Abstract

The invention provides a method and a device for detecting internal temperature and humidity at any position of a fuel cell stack in a partitioned manner, and belongs to the technical field of fuel cells and the field of temperature and humidity distribution detection at any position of the fuel cell stack. Wherein the signal acquisition device comprises a signal acquisition plate, a partition insulation plate, a partition current collection plate, a partition pole plate and signal via hole acquisition plate and a partition cover plate; the partition collector plate, the partition insulating plate and the signal acquisition plate are assembled in sequence and can be embedded into the end part of the fuel cell stack; the signal via hole acquisition plate and the partition cover plate are assembled and can be embedded into any position of the fuel cell stack; two assembling and embedding modes are provided, temperature and humidity detection on any position in the fuel cell stack is realized, and the embedding installation mode has small influence on the structure of the fuel cell stack and the membrane electrode; by changing the structure of the polar plate, the polar plate is divided into a single gas flow channel plate, a water flow channel plate and another single gas flow channel plate, so that the water flow channel is prevented from being damaged and the device is prevented from being influenced when the polar plate is perforated for gas conduction.

Description

Technical Field

[0001] The present invention belongs to the technical field of fuel cells, and particularly relates to a method and device for detecting the internal temperature and humidity zoning at any position of a fuel cell stack. Background Art

[0002] As an energy conversion device, a fuel cell has the characteristics of high efficiency and no pollution, and has been gradually applied to fields such as transportation, stationary power generation and energy storage, and portable power sources. However, to meet the requirements of commercialization, it is necessary not only to meet the performance requirements, but also to have good stability, reliability and durability.

[0003] When a fuel cell stack is operating, its internal temperature and humidity change with time. High temperature will accelerate the deactivation of the catalyst, membrane degradation and seal material failure, resulting in a decrease in the battery service life; low temperature reduces the catalyst activity, resulting in a lower operating efficiency of the fuel cell. Similarly, high humidity will cause water accumulation in the fuel cell, resulting in flooding, thereby reducing the effective reaction area of the battery; when the humidity is low, the membrane dehydrates, resulting in a decrease in ionic conductivity, an increase in resistance, and a decrease in efficiency, thereby causing a decrease in the output voltage of the fuel cell. On this basis, by real-time in-situ detecting the temperature, humidity and other information in each area inside the fuel cell, the temperature and humidity distribution can be obtained, so as to guide the real-time adjustment of external input parameters, realize the operation of the fuel cell under the optimal working conditions, and at the same time guide the processing design of the fuel cell stack, thereby improving its durability.

[0004] Most of the existing internal temperature and humidity detections of fuel cell stacks arrange temperature and humidity sensors at the ends, and it is impossible to detect the temperature and humidity at any position inside the stack, so it is impossible to study the differences of each membrane electrode; at the same time, there are many changes to the bipolar plate body, which is not suitable for processing and manufacturing. The plate body material is mostly graphite, which is difficult to adapt to commercial stacks; currently, most temperature and humidity detections use the method of perforating and leading wires on multiple small-area circuit boards. When detecting temperature and humidity, it has a great impact on the structure of the fuel cell stack, and the cumbersome wiring is not conducive to the installation of the fuel cell stack.

[0005] Therefore, it is very necessary to invent a method and device for detecting the internal temperature and humidity zoning at any position of a fuel cell stack. Summary of the Invention

[0006] To solve the above technical problems, the present invention provides a method and device for detecting the internal temperature and humidity zoning at any position of a fuel cell stack, so as to solve the problems that most of the existing internal temperature and humidity detections of fuel cell stacks arrange temperature and humidity sensors at the ends, and it is impossible to detect the temperature and humidity at any position inside the stack, so it is impossible to study the differences of each membrane electrode; at the same time, the bipolar plate body is changed more, which is not suitable for processing and manufacturing, and the plate body material is mostly graphite, which is difficult to adapt to commercial stacks; at present, most of the temperature and humidity detections are measured by the method of perforating and leading wires of multiple small-area circuit boards. When detecting the temperature and humidity, it has a great impact on the structure of the fuel cell stack, and the cumbersome wiring is not conducive to the installation of the fuel cell stack. A device for detecting the internal temperature and humidity zoning at any position of a fuel cell stack includes: a signal acquisition device, a fuel cell stack, a data acquisition module, and a host computer; the signal acquisition device is embedded in the fuel cell stack; the signal acquisition device includes two composition forms: a signal acquisition board, a partition insulation board, a partition current collector board, a partition plate and a signal via acquisition board, and a partition cover plate; the signal acquisition board has a plurality of partitions corresponding to the active area of the fuel cell; the signal acquisition board includes temperature and humidity sensors; the temperature and humidity sensors correspond one by one to the number of partitions and are installed on the surface of the corresponding partitions; all the temperature and humidity sensors share a ground wire and a power supply wire; the signal via acquisition board is similar in structure to the signal acquisition board, the difference being that metallized vias are evenly arranged around the partition temperature and humidity sensors in the signal via acquisition board and copper deposition and gold plating treatments are respectively carried out on both sides for current conduction, facilitating embedding at any position of the fuel cell stack;

[0007] The partition insulation board is provided with a plurality of grooves, and each groove position corresponds to a temperature and humidity sensor for the contact cooperation between the signal acquisition board and the partition insulation board; through holes are provided at the bottom of the grooves of the partition insulation board for gas conduction; the partition current collector board is provided with a plurality of through holes, and each through hole position corresponds to a temperature and humidity sensor for gas conduction; the partition cover plate is provided with a plurality of grooves, and each groove position corresponds to a temperature and humidity sensor for the contact cooperation between the signal via acquisition board and the partition cover plate; through holes are provided at the bottom of the grooves of the partition cover plate for gas conduction; metallized vias are evenly arranged around the grooves of the partition cover plate corresponding to the metallized vias of the signal via acquisition board for current conduction.

[0008] Furthermore, the partitioned electrode plate is divided into multiple partitions, and the size and quantity of the partitions correspond to those of the signal acquisition board partitions; through holes are provided in each partition of the partitioned electrode plate, and the position of each through hole corresponds to that of the temperature and humidity sensor for gas conduction; the partitioned current collector plate, the partitioned insulating plate, and the signal acquisition board are assembled in sequence and can be embedded at the end position of the fuel cell stack; the partitioned cover plate has electrical conductivity, and the signal via acquisition board and the partitioned cover plate can be assembled and embedded at any position of the fuel cell stack; the signal acquisition device is powered by an external power supply, and is connected to the data acquisition module through a connector and a connecting wire for data acquisition and transmits the information to the host computer for data processing and presentation; by constructing an in-situ detection system with high spatial resolution, local reaction kinetic characteristic parameters (temperature, humidity) inside the battery can be accurately captured, so as to guide the adjustment of external input parameters and effectively suppress the occurrence of adverse side reactions (such as flooding, membrane drying, and catalyst deactivation) inside the fuel cell.

[0009] Furthermore, the signal acquisition board is embedded at the end of the fuel cell stack, and the temperature and humidity are detected through the partitioned electrode plate, the partitioned current collector plate, and the partitioned insulating plate to the signal acquisition board.

[0010] Furthermore, the signal acquisition board is embedded at any position of the fuel cell stack, and the temperature and humidity are detected through the partitioned electrode plate, the partitioned cover plate, and the partitioned via acquisition board; two assembly and embedding methods are provided to realize the temperature and humidity detection at any position inside the fuel cell stack, and the embedding installation method has little influence on the structure of the fuel cell stack and the membrane electrode; by changing the structure of the electrode plate, it is divided into two types of plates: a single gas flow channel plate and a water flow channel plate and another single gas flow channel plate, avoiding the damage to the water flow channel and the influence on the device when drilling holes in the electrode plate for gas conduction.

[0011] Furthermore, the method of embedding at any position of the fuel cell stack requires changing the structure of the partitioned electrode plate, and the partitioned electrode plate is divided into two types of plates: a single gas flow channel plate and a water flow channel plate and another single gas flow channel plate; the signal acquisition board is embedded at any position of the fuel cell stack, between the two types of plates; the partitioned cover plate is a metal plate or a PCB board to ensure the flatness of the mating surface.

[0012] A method for detecting the internal temperature and humidity in any position of a fuel cell stack uses the above-mentioned device for detecting the internal temperature and humidity in any position of a fuel cell stack. The two sides of the partitioned cover plate are subjected to copper plating and immersion gold treatment, and the current conduction on both sides is completed through the metallized through holes around the grooves of the partitioned cover plate.

[0013] Further, except for the two sides where the humidity and temperature sensors are arranged on the signal via acquisition board, the two sides are subjected to copper deposition and gold plating treatment, and the current conduction on both sides is completed through the metallized vias of the signal via acquisition board; the signal via acquisition board and the partition cover plate can be assembled and embedded at any position of the fuel cell stack. The cooperation form between the partition cover plate and the signal via acquisition board is replaced by the buried resistor printed board method. The buried resistor printed board is internally provided with humidity and temperature sensors, and the top and bottom are subjected to copper deposition and gold plating treatment and are embedded at any position of the fuel cell stack; the humidity and temperature sensors need to be protected by a hydrophobic, dust-proof and breathable membrane. The hydrophobic, dust-proof and breathable membrane is arranged at the bottom of the through hole on the side with the flow channel of the partition plate electrode, and the protective membrane is fixed by being pressed by the lower matching part of the partition plate electrode and the partition plate electrode.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] First, the present invention provides two assembly and embedding methods to realize the detection of temperature and humidity at any position inside the fuel cell stack. The embedding installation method has little influence on the structure of the fuel cell stack and the membrane electrode; by changing the structure of the plate electrode, it is divided into two types of plate bodies: a single gas flow channel plate and a water flow channel and another single gas flow channel plate, avoiding the damage to the water flow channel when punching holes in the plate electrode for gas conduction and affecting the device.

[0016] Second, in the present invention, by constructing an in-situ detection system with high spatial resolution, the local reaction kinetic characteristic parameters (temperature, humidity) inside the battery are accurately captured, so as to guide the adjustment of external input parameters and effectively inhibit the occurrence of adverse side reactions (such as flooding, membrane drying and catalyst deactivation) inside the fuel cell.

[0017] Third, in the present invention, this in-situ diagnosis can realize the real-time optimization of the system operation state, and can also provide reliable data support for the high-precision fuel cell simulation model through multi-physical field data fusion analysis, promoting the iterative optimization and experimental verification of the fuel cell multi-scale model, and achieving the goal of optimizing the performance and extending the life of the fuel cell system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a block diagram of the device for detecting the temperature and humidity in different zones at any position inside the fuel cell stack;

[0019] Figure 2 It is a schematic structural diagram of the signal acquisition device of the embodiment of the present invention that can only be embedded at the end of the fuel cell stack;

[0020] Figure 3 It is a schematic structural diagram of the signal acquisition device of the embodiment of the present invention embedded at the end of the fuel cell stack;

[0021] Figure 4 It is a schematic structural diagram of the signal acquisition device of the embodiment of the present invention embedded at any position of the fuel cell stack. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The present invention will be further described below in conjunction with the accompanying drawings:

[0023] As Figure 1 shown, the present invention provides a device for detecting the internal temperature and humidity zoning at any position of a fuel cell stack, including a signal acquisition device 100, a fuel cell stack 200, a data acquisition module 300, and a host computer 400. The signal acquisition device 100 can be embedded at any position of the fuel cell stack 200 for in-situ detection of different regions. The signal acquisition device 100 is powered by an external power supply, connected to the data acquisition module 300 through a connector and a connecting wire for data acquisition, and transmits the information to the host computer 400 for data processing and presentation, and real-time displays the internal temperature and humidity distribution of the fuel cell stack.

[0024] Embodiment 1:

[0025] As Figure 2 shown, Embodiment 1 of the present invention provides a device for detecting the internal temperature and humidity zoning at any position of a fuel cell stack, which is only suitable for end detection. First, the device for detecting the internal temperature and humidity zoning at any position of the fuel cell stack provided in Case 1 of the present invention will be described. The device for detecting the internal temperature and humidity zoning at any position of the fuel cell stack includes a signal acquisition device 100, a fuel cell stack 200, a data acquisition module 300, and a host computer 400; the signal acquisition device 100 is embedded at the end of the fuel cell stack 200; the signal acquisition device 100 includes a signal acquisition board 10, a partition insulation board 20, a partition current collector board 30, and a partition electrode plate 40; the signal acquisition board 10 has a plurality of partitions corresponding to the active area of the fuel cell stack 200; the signal acquisition board 10 further includes a temperature and humidity sensor 12; the temperature and humidity sensors 12 correspond one-to-one to the number of partitions and are installed on the surface of the corresponding partitions; all the temperature and humidity sensors 12 share a ground wire and a power supply wire; the partition insulation board 20 is provided with a plurality of grooves 21, and each position of the groove 21 corresponds to the temperature and humidity sensor 12 for the contact fit between the signal acquisition board 10 and the partition insulation board 20; a through hole 22 is provided at the bottom of the groove 21 of the partition insulation board for the conduction of gas; the partition current collector board is provided with a plurality of through holes 31, and each position of the through hole corresponds to the temperature and humidity sensor for the conduction of gas; the partition electrode plate 40 is divided into a plurality of partitions, and the partition size and number correspond to the partitions of the signal acquisition board 10; through holes 42 are provided at the flow channels 41 of the partition electrode plate, and each position of the through hole 42 corresponds to the temperature and humidity sensor 12 for the conduction of gas; the partition current collector board 30, the partition insulation board 20, and the signal acquisition board 10 are assembled in sequence and can be embedded at the end position of the fuel cell stack, and the outermost side is an end plate 81; the signal acquisition device 100 is powered by an external power supply, connected to the data acquisition module 300 through a connector and a connecting wire for data acquisition, and transmits the information to the host computer 400 for data processing and presentation.

[0026] In this embodiment, a plate through-hole 42 is provided at the flow channel of the partitioned plate 40. The gas diffuses through the partitioned plate through-hole 42 to the partitioned current collector plate through-hole 31, and finally diffuses through the partitioned insulating plate through-hole 22 to the humidity sensor 12 for humidity signal acquisition. The heat on the plate 40 is transferred to the signal acquisition board 10 through the partitioned current collector plate 30, the partitioned insulating plate 20, and each through-hole. The heat is conducted on the signal acquisition board 10 and is finally absorbed by the humidity sensor 12, so that the humidity sensor 12 reaches the same steady-state temperature as the corresponding area on the partitioned plate 40. The signal acquisition device 100 is embedded without affecting current transfer. The current is transferred directly through the direct contact between the partitioned plate 40 and the partitioned current collector plate 30, and finally the current is collected to the partitioned current collector plate 30.

[0027] Embodiment 2:

[0028] As Figure 3 and Figure 4 shown, Embodiment 2 of the present invention provides a device for detecting the internal temperature and humidity partition at any position of a fuel cell stack, which is adapted to detect at any position. First, the device for detecting the internal temperature and humidity partition at any position of the fuel cell stack in Case 2 provided by the present invention will be described. The device for detecting the internal temperature and humidity partition at any position of the fuel cell stack includes a signal acquisition device 100, a fuel cell stack 200, a data acquisition module 300, and a host computer 400; the signal acquisition device 100 is embedded in the fuel cell stack 200; the signal acquisition device 100 includes a signal via acquisition board 11 and a partition cover plate 50; the signal via acquisition board 11 has a plurality of partitions corresponding to the active areas of the fuel cell; the signal via acquisition board 11 further includes humidity sensors 12; the humidity sensors 12 correspond one-to-one with the number of partitions and are installed on the surfaces of the corresponding partitions; all the humidity sensors 12 share a ground wire and a power supply wire; metallized vias 14 are evenly arranged around the partition humidity sensors 12 in the signal via acquisition board 11 for current conduction; the partition cover plate 50 is provided with a plurality of grooves 51, and the position of each groove 51 corresponds to that of the humidity sensor 12 for the contact fit between the signal via acquisition board 11 and the partition cover plate 50; through-holes 52 are provided at the bottom of the partition cover plate groove 51 for gas conduction; metallized vias 54 are evenly arranged around the partition cover plate groove 50 corresponding to the metallized vias 14 of the signal via acquisition board for current conduction; the partitioned plate 40 is divided into a plurality of partitions, and the partition sizes and numbers correspond to those of the partitions of the signal via acquisition board 11; through-holes 42 are provided at the flow channels 41 of the partitioned plate, and the position of each through-hole 42 corresponds to that of the humidity sensor 12 for gas conduction; the partition cover plate 50 has conductivity, and the signal via acquisition board 11 and the partition cover plate 50 can be assembled and embedded at any position of the fuel cell stack 200; the signal acquisition device 100 is powered by an external power supply, and is connected to the data acquisition module 300 through a connector and a connecting wire for data acquisition and transmits the information to the host computer 400 for data processing and presentation.

[0029] In this embodiment, when the signal acquisition device 100 is embedded at the end of the fuel cell stack 200, as Figure 3 shown. There are plate through-holes 42 at the partition plate flow channels 41. The gas diffuses to the partition collector cover through-holes 52 through the partition plate through-holes 42, and finally diffuses to the signal via-hole acquisition plate 11. The humidity sensor 12 collects the humidity signal. The heat on the plate 41 is transferred to the signal via-hole acquisition plate 11 through the partition cover 50. The heat conducts on the signal via-hole acquisition plate 11 and is finally absorbed by the humidity sensor 12, so that the humidity sensor 12 reaches the same steady-state temperature as the corresponding area on the partition plate 40. Embedding the signal acquisition device 100 does not affect the current transfer. The partition cover 50 and the top and bottom layers of the signal via-hole acquisition plate 11 are respectively treated with copper plating and immersion gold. The current passes through the partition plate 40 and is transferred to the copper plating and immersion gold area 53 on the top layer of the partition cover, and then passes through the current metallization via-hole 54 of the partition cover and is transferred to the copper plating and immersion gold area 55 on the bottom layer of the partition cover. The copper plating and immersion gold area 55 on the bottom layer of the partition cover contacts the copper plating and immersion gold area 13 on the top layer of the signal via-hole acquisition plate for current transfer. Then the current is transferred to the copper plating and immersion gold area 13 on the top layer of the signal via-hole acquisition plate, and then passes through the signal via-hole acquisition plate metallization via-hole 14 and is transferred to the copper plating and immersion gold area 15 on the bottom layer of the signal via-hole acquisition plate. The copper plating and immersion gold area 15 on the bottom layer of the signal via-hole acquisition plate contacts the current collector plate 80, and the current finally converges to the current collector plate 80. The outermost side is the end plate 81.

[0030] In this embodiment, when the signal acquisition device 100 is embedded at any position inside the fuel cell stack 200, as Figure 4As shown in the figure. The partitioned electrode plates are divided into two types of plates, namely the cathode gas plate 60 and the water flow channel and anode gas plate 70. The water flow channel and anode gas plate 70 is provided with a water flow channel 71 and an anode gas flow channel 72. A plate through-hole 62 is provided at the cathode gas plate flow channel 61. The gas diffuses through the partitioned electrode plate through-hole 62 to the partitioned cover plate through-hole 52, and finally diffuses to the signal via-hole collection plate 11, where the temperature and humidity sensor 12 collects the humidity signal. The heat on the cathode gas plate 60 is transferred to the signal via-hole collection plate 11 through the partitioned cover plate 50. The heat is conducted on the signal via-hole collection plate 11 and is finally absorbed by the temperature and humidity sensor 12, so that the temperature and humidity sensor 12 reaches the same steady-state temperature as the corresponding area on the cathode gas plate 60. The signal acquisition device 100 is embedded without affecting the current transfer. The partitioned cover plate 50 and the top and bottom layers of the signal via-hole collection plate 11 are respectively subjected to copper plating and immersion gold treatment. The current is transferred from the cathode gas plate 60 to the copper plating and immersion gold area 53 on the top layer of the partitioned cover plate, and then passes through the metallized via-hole 54 of the partitioned cover plate and is transferred to the copper plating and immersion gold area 55 on the bottom layer of the partitioned cover plate. The copper plating and immersion gold area 55 on the bottom layer of the partitioned cover plate contacts the copper plating and immersion gold area 13 on the top layer of the signal via-hole collection plate for current transfer. Then the current is transferred to the copper plating and immersion gold area 13 on the top layer of the signal via-hole collection plate, and then passes through the metallized via-hole 14 of the signal via-hole collection plate and is transferred to the copper plating and immersion gold area 15 on the bottom layer of the signal via-hole collection plate. The copper plating and immersion gold area 15 on the bottom layer of the signal via-hole collection plate contacts the water flow channel and anode gas plate 70, and the current converges with the current generated by other membrane electrodes 82.

[0031] Further, as a specific embodiment of the internal temperature and humidity partition detection device at any position of the fuel cell stack provided by the present invention, the method of embedding the fuel cell stack 200 at any position requires that the two types of electrode plate structures adopt the cathode gas plate 60 and the water flow channel and anode gas plate 70, but it is not limited thereto. It can be divided into two types of plates: a single gas flow channel plate and a water flow channel and another single gas flow channel plate.

[0032] Further, as a specific embodiment of the internal temperature and humidity partition detection device at any position of the fuel cell stack provided by the present invention, the temperature and humidity sensor 12 can work under high temperature and high humidity conditions. The size of the sensor should preferably not be greater than 2.5mm×2.5mm×0.9mm, the temperature accuracy is less than 0.5°C, the humidity accuracy is less than 3%RH, and the highest applicable temperature should be higher than 120°C.

[0033] Further, as a specific embodiment of the internal temperature and humidity partition detection device at any position of the fuel cell stack provided by the present invention, the data acquisition module 300 has a sampling frequency in the range of 10 - 100Hz, and the frequency is adjusted according to the sampling frequency requirements.

[0034] Further, as a specific embodiment of the internal temperature and humidity zoning detection device at any position of the fuel cell stack provided by the present invention, a regulated power supply is used to supply power to the temperature and humidity sensor 12.

[0035] Any technical solution designed by using the technical solution of the present invention or inspired by the technical solution of the present invention by those skilled in the art to achieve the above technical effects shall fall within the protection scope of the present invention.

Claims

1. An internal temperature and humidity zoning detection device at any position of a fuel cell stack, characterized in that, Including: A signal acquisition device, a fuel cell stack, a data acquisition module, and a host computer; the signal acquisition device is embedded in the fuel cell stack; The signal acquisition device includes two composition forms: a signal acquisition board, a partition insulation board, a partition current collector board, a partition electrode plate, and a signal via acquisition board, and a partition cover plate; the signal acquisition board has a plurality of partitions corresponding to the active areas of the fuel cell; The signal acquisition board includes temperature and humidity sensors; the temperature and humidity sensors correspond one-to-one with the number of partitions and are installed on the surfaces of the corresponding partitions; all the temperature and humidity sensors share a ground wire and a power supply wire; the signal via acquisition board is similar in structure to the signal acquisition board, the difference being that metallized vias are evenly arranged around the partition temperature and humidity sensors in the signal via acquisition board and copper plating and immersion gold treatment are carried out on both sides for current conduction, facilitating embedding at any position in the fuel cell stack; The partition insulation board is provided with a number of grooves, and the position of each groove corresponds to that of the temperature and humidity sensor for the contact fit between the signal acquisition board and the partition insulation board; through holes are provided at the bottoms of the grooves of the partition insulation board for gas conduction; the partition current collector board is provided with a number of through holes, and the position of each through hole corresponds to that of the temperature and humidity sensor for gas conduction; the partition cover plate is provided with a number of grooves, and the position of each groove corresponds to that of the temperature and humidity sensor for the contact fit between the signal via acquisition board and the partition cover plate; through holes are provided at the bottoms of the grooves of the partition cover plate for gas conduction; metallized vias are evenly arranged around the grooves of the partition cover plate corresponding to the metallized vias of the signal via acquisition board for current conduction.

2. The internal temperature and humidity zoning detection device at any position of the fuel cell stack according to claim 1, wherein The partition electrode plate is divided into a number of partitions, and the size and number of the partitions correspond to those of the partitions of the signal acquisition board; through holes are provided in each partition of the partition electrode plate, and the position of each through hole corresponds to that of the temperature and humidity sensor for gas conduction; the partition current collector board, the partition insulation board, and the signal acquisition board are assembled in sequence and can be embedded at the end position of the fuel cell stack; The partition cover plate has conductivity, and the signal via acquisition board and the partition cover plate can be assembled and embedded at any position in the fuel cell stack; the signal acquisition device is powered by an external power supply, connected to the data acquisition module through a connector and a connecting wire for data acquisition and transmits information to the host computer for data processing and presentation.

3. The internal temperature and humidity zoning detection device at any position of the fuel cell stack according to claim 2, characterized in that The signal acquisition board is embedded at the end of the fuel cell stack, and temperature and humidity detection is carried out through the partition electrode plate, the partition current collector board, the partition insulation board to the signal acquisition board.

4. The internal temperature and humidity zoning detection device at any position of the fuel cell stack according to claim 2, wherein The signal acquisition board is embedded at any position in the fuel cell stack, and temperature and humidity detection is carried out through the partition electrode plate, the partition cover plate to the partition via acquisition board.

5. The internal temperature and humidity zoning detection device at any position of the fuel cell stack according to claim 2, characterized in that The method of embedding at any position in the fuel cell stack requires changing the structure of the partition electrode plate. The partition electrode plate is divided into two types of plates: a single gas flow channel plate and a water flow channel and another single gas flow channel plate; the signal acquisition board is embedded at any position in the fuel cell stack, between the two types of plates.

6. The internal temperature and humidity zoning detection device at any position of the fuel cell stack according to claim 5, characterized in that, The partition cover plate is a metal plate or a PCB board to ensure the flatness of the mating surface.

7. A method for detecting the internal temperature and humidity zoning at any position of a fuel cell stack, using the device for detecting the internal temperature and humidity zoning at any position of a fuel cell stack according to any one of claims 1-6, characterized in that, Copper plating and immersion gold treatment are carried out on both sides of the partition cover plate, and current conduction on both sides is completed through the metallized vias around the grooves of the partition cover plate.

8. The method for detecting the internal temperature and humidity zoning at any position of the fuel cell stack according to claim 7, characterized in that Except for the two sides where the temperature and humidity sensors are arranged on the signal via acquisition board, the two sides are subjected to copper deposition and gold plating treatment, and the current conduction on both sides is completed through the metallized vias of the signal via acquisition board.

9. The method for detecting the internal temperature and humidity zoning at any position of the fuel cell stack according to claim 8, characterized in that, The signal via acquisition board and the partition cover plate can be assembled and embedded in any position of the fuel cell stack. The cooperation form between the partition cover plate and the signal via acquisition board is replaced by the buried resistor printed circuit board method. The buried resistor printed circuit board is internally provided with temperature and humidity sensors, and the top and bottom are subjected to copper deposition and gold plating treatment and embedded in any position of the fuel cell stack.

10. The method for detecting the internal temperature and humidity zoning at any position of the fuel cell stack according to claim 9, characterized in that, The temperature and humidity sensors need to be protected by a hydrophobic, dust-proof and breathable membrane. The hydrophobic, dust-proof and breathable membrane is arranged at the bottom of the through hole on the side with a flow channel of the partition plate. The protective membrane is fixed by being pressed by the lower matching part of the partition plate and the partition plate.

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