TWI234309B - Transient start and temperature adjustment apparatus of humidifying module for fuel cell - Google Patents

Abstract

A transient start and temperature adjustment apparatus of humidifying module for fuel cell is disclosed in the present invention. A humidifier is connected between the air source and the air-inlet of the fuel cell set. The humidifier is used to supply the reaction gas, which is undergone with the adjustment process of appropriate humidity and temperature, to the fuel cell. The humidifier is provided with at least one heating plate. One control apparatus is used to control the heating action of the heating plate based on the predetermined parameter condition when the fuel cell set starts to operate. The control apparatus includes at least one temperature sensor for measuring the temperature condition of the humidifier and sending out a temperature signal. A micro-controller is used to receive the temperature signal generated by the temperature sensor and to control the heating plate according to the temperature signal. A storage unit of reference temperature value is used to store and provide a reference temperature signal to the micro controller. A time setting value storage unit is used to provide a time signal to the control apparatus.

Description

V. Description of the invention (1)

[Technical field J to which the invention belongs] The present invention relates to a humidification device for a fuel cell stack, and more particularly to an instant start and temperature adjustment device for a fuel cell humidification module. [Previous Technology] A fuel cell is a device that uses hydrogen to generate electricity through air through electrochemical reactions. Because fuel cells have the advantages of low pollution, high efficiency, and high energy density, they have become the target of research and development and promotion in China in recent years. This degree of divergence is high in various fuel cells, so it has the most industrial value. A typical fuel cell stack is composed of a plurality of membrane electrode assemblies (Membrane ectrode Assembles, MEA), and includes an anode catalyst layer and a polymer solid film electrode assembly layer. Combining this membrane electrode assembly with gas diffusion sound: the cathode catalyst becomes a basic fuel cell; = the superposition of the expansion layer and the bipolar plate, that is, the fuel cell relies on the polymer proton exchange membrane hawk ^ ^ ( Protons) to complete the electrochemical reaction, • Electricity transfer hydrogen ionizers such as temperature, humidity, hydrogen flow, air flow, etc. = operation bar off. [For example, in terms of humidity conditions, it is necessary to maintain the cough = exhaustive phase-exchange membrane at a proper operating level. Under the technology, in order to maintain this,-the general method is in the reaction gas supply line $: at the appropriate /, 'state, so that the reaction gas in the thirst two configured one plus ... to it relatively wet 1234309 V. Description of the invention (2) degrees' and then supplied to the fuel cell. For example, with regard to the supply of air (oxygen), the general method is to configure the humidifier after the blower, and then connect it to the cathode reaction gas input hole in the fuel cell so that when the air enters the fuel cell Can get proper relative humidity. The first figure is a schematic diagram showing a fuel cell system equipped with a humidifier in the conventional technology. The hydrogen required for the reaction of the fuel cell stack 1 is supplied by a nitrogen source 2, and the hydrogen supplied by the hydrogen source 2 is sent in through a nitrogen inlet 11 of the fuel cell stack 1 and can be sent out through a hydrogen outlet 12. The hydrogen source 1 may be supplied from a conventional hydrogen storage tank or other hydrogen generating device. The oxygen required for the reaction of the fuel cell stack is supplied by an air source 3. A humidifier 4 may be connected between the air source 3 and the air inlet 1 3 of the fuel cell stack 1. The humidifier 4 can be used to supply the reaction gas after the humidity has been appropriately adjusted to the fuel cell stack 1. The gas introduction end 41 of the humidifier 4 can introduce an air source to the humidifier 4, and after passing the humidity adjustment function in the humidifier 4, the adjusted gas is transported from the gas outlet end 42 to the fuel. The air inlet 1 3 of the battery pack 1 is used to supply oxygen required for the fuel cell stack 1 to react. The aforementioned gas source 3 can be supplied by a general blowing device. f. Among the designs mentioned, there are also some designs that additionally design waste heat recovery pipelines' to enhance the humidification and heating performance of the humidifier. [Summary of the Invention] The technical problem to be solved by the present invention is, however, ‘in the conventional fuel cell reaction gas humidification technology’

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Although it can achieve the purpose of controlling the relative humidity of the reaction gas, in practice, it is found that there are still many areas to be improved, such as the configuration of the humidifier's pipeline, the performance of the humidifier, etc., and further improvements are needed. The start of the temperature pool system is still unable to reach the design point of the pipeline. This group of humidifiers has a moderate condition when the humidifying mold hot plate and the control of the humidification mold get moderate conditions. The effect of the temperature of the instantaneous device of the other group of the battery is obvious, and the battery pack and the heating will make the full purpose provided when the humidification is designed, even if it is designed to move at an early stage. An inter-structure start-up and temperature-adjusting device, which can feed into the fuel degree and humidity adjustment. Time, the state of combustion, effect. The internal humidifier of the main temperature control system of the system Qiming does not help the design of fuel and electricity in the waste heat recovery of humidification. It is easy to add a good configuration. It only needs to cooperate with the performance of the battery pack. Can make humidifying effect. The fuel and electricity are easily added to the reaction gas. The technical means for solving the problem of the present invention The present invention adopts a method for solving the problems of the conventional technology. The humidifier is connected to the air source and the fuel cell stack. The technical means is to use the A humidifier is used to supply gas to the fuel cell stack after passing between appropriate humidity and π. The humidifier '2 is placed in two, and the reaction after the festival is a control device, which can start the operation of the fuel cell stack's heating plate. Parameter conditions, and control the heating action of the heating plate, according to a preset

Page 7 1234309 V. Description of the invention (4) The preferred embodiment of the present invention provides a measuring device for measuring the temperature of the cough plus two controls including at least-temperature sensor ^ Humidifier temperature condition and sends a strict L A micro-controller can receive the temperature subtraction measurement, the device w σ and then continue to take the 4 ^ ^ ~ ° cat house health / plate degree signal, JL 笊 猓 3, plate degree "blind and control This plus one yuan can be used to store the review and • mention # 一 夂 ^, 0 _ ^ _ # two loss severity values to store the early determination force: reference degree ^ # ϋ to the microcontroller, · momentary °: Zi Zaowu It can provide a time signal to the control device. The present invention compares the efficacy of the prior art / the technology + section adopted by Ben Ming, which can make the fuel cell stack start at the beginning: the temperature provided by the present invention / Under the humidity control, provide a reaction gas with the best relative humidity to operate in the best operating conditions in the pool. / Ranning Ning, the invention only needs to cooperate with a simple heating plate and control device, so that The reaction gas sent to the fuel cell stack can be properly temperature and humidity adjusted. It is extremely easy to implement when installed. The other objects and effects of the present invention will be further explained by the following examples and attached drawings: [Embodiment] _ w The second picture shows the fuel cell humidification mold of the present invention. Schematic diagram of the instantaneous start-up and adjustment of the system of the first embodiment of the JDL device. The fuel cell stack 1 is composed of a plurality of membrane electrode assemblies (Membrane E1 ectrode Assemblies), and each membrane electrode assembly Bulk combined anode catalyst layer, proton-parent membrane exchange, cathode catalyst layer, anode gas diffusion layer, cathode Page 8 1234309

The electrode gas diffusion layer constitutes the basic green position of the electrochemical reaction of the fuel cell. Each membrane electrode group is electrically connected in series to achieve the second voltage level and current value, and then a positive terminal (+) and a negative terminal (_) output an output voltage Vout. The fuel shoulder : The hydrogen required for the reaction of the pool group 1 is supplied by a hydrogen source 2 'The hydrogen supplied by the hydrogen source 2 is sent from the hydrogen inlet 11 of the fuel cell stack 1 and can be sent from the hydrogen outlet 12. The hydrogen source J It can be supplied by conventional hydrogen storage tanks or other hydrogen generating devices. The oxygen required for the reaction of the fuel cell stack 1 is supplied by an air source 3. A humidifier 4 can be connected between the air source 3 and the fuel cell stack 1. Between the air inlets 1 and 3. The humidifier 4 can be used to supply the reaction gas after the appropriate humidity adjustment to the fuel cell stack 1. The gas introduction end 41 of the humidifier 4 can air The source is introduced into the humidifier 4 through the humidity adjustment function in the humidifier 4 and then the adjusted gas is sent from the gas outlet 4 2 to the air inlet 1 3 of the fuel cell stack 1 to supply the fuel cell. Oxygen required for Group 1 reactions. The gas source 3 can be supplied by a general air blowing device. After the humidity of the humidifier 4 is adjusted, the gas is sent to the fuel, and after being in the pool group 1, it is returned to the humidifier 4 through an air outlet 丨 4. The exhaust gas introduction end 43 of the humidifier 4, and the exhaust gas passes through the interior of the humidifier 4, and then is discharged from the exhaust gas outlet end 44 of the humidifier 4. The first person connected to the gas outlet end 42 of the humidifier 4 and The pipeline between the air inlets 1 and 3 of the fuel cell stack 1 can be covered with a heat insulating sleeve 1 31 to ensure the humidifying effect of the air transported into the fuel cell stack 1. The air connected to the humidifier 4

V. Description of the invention (6) Gas inlet 43 and fuel cell. It is also possible to insulate the bushing 1 4 1 from the pipeline between the second gas outlet 14 and 4 in the present invention. 5 has a heating plate 5. The three-dimensional view of the humidifier 4 used at the end plate 45 of the third T4 humidifier 4 is shown in the first embodiment of the present invention, and the fifth figure is shown in the third and fourth figures. Humidifier 4 side exploded perspective view. In the drawing, when the heating plate 5 and the humidifier 4 are separated from each other, 45 heating plates are provided at 45 places. The heating plate 5 is provided on the two end plates of the humidifier 4. § Of course, only one of the end plates 45 × the end plate 45 of the humidifier 4 may be made of a guide dagger or an aluminum alloy, etc., and a material with good properties (such as an aluminum sheet). The heating plate 52 is heated by a hard (or soft) resistor, and the obstruction 5 can also be used in conjunction with the obituary 5 at the end of the end plate 45 of the humidifier 4 at the end of the humidifier 4 °: The two partitions are insulated from the material and are configured by 5 heating plates of the humidifier 4 in an in-line configuration. The control device is installed by the control device 6 according to a preset strip temperature sensor 62. The 3 /, including a micro The controller 61 is connected to the condition and sends a temperature 63 to measure the humidifier 4 at t2. The device 6 may also include a reference temperature value storage unit port for a reference temperature signal s2 so that When the microcontroller 61 performs control, the temperature value stored in the reference temperature value storage unit 63 can be used as a reference value for control. The temperature signal si and the reference temperature signal S2 are sent to a temperature comparison unit 64 for processing. Comparison of temperature values. The control device 6 may also include a time setting value storage unit. 5. Description of the invention (7) 65, which can provide a time signal s3 to the microcontroller 6m.; = 2, the time value stored in the time setting value storage unit 65 can be used as a reference value for storage. Storage; ^ is // user Can be set according to actual needs ^ the reference temperature value ^ as early as 3 in the reference temperature value and time set value storage unit 65 = time, the micro-controller 61 can be connected with a control parameter setting unit value storage two = other β The reference value and the time value are stored in the reference temperature value storage 7063 and the time setting value storage unit 65. = Control ^ According to the previously detected temperature signal d Time signal ㈡ In order to determine whether to control the start of the humidifier 4: the output signal generated by the controller 61 can be driven by -68, and the switch signal is driven by the drive signal to control the heating of the heating plate 5 State: 1 e = /, the power of board 5 can be supplied by an electric power supply device 7, and an external power source (DC power; or AC ##) can also be recognized by the fuel mine and ice. ϊ .Α, as the power source. The output voltage Vout output from the injustice pool is used as the working fuel. The system is started blindly, and the hydrogen and air are supplied by the hydrogen source 2 and: respectively; the fuel cell 1 needs to supply the fuel to the fuel, and the air source 3 passes through the humidifier 4 at the ice t, τ, and the thirsty words are forthcoming. Since the fuel cell system is started, the environment is still at a relatively low temperature, and the internal workload of the humidifier 4 can be measured, and a temperature will be sent. “: The state will be given by the temperature sensor 62 1 π ^ # The control device 6. The control device 6 is based on the received temperature signal sl and the reference temperature 1234309 V. Description of the invention (8) The reference temperature signal s2 in the value storage unit 63 is first compared with the result of the comparison, If the temperature signal S1 is lower than the test temperature, the micro-controller 61 will generate an output signal to close the switching device 68 via the driving circuit. Therefore, the heating plate 5 will immediately respond to the heating when it reaches a predetermined condition (that is, this At this time, the fuel cell has entered Ϊ ΐ ΐ (after a fixed time), at this time, the temperature signal sl is the same as the reference temperature, then-the microcontroller 61 stops sending out ~ output signal, so that the switching device 68 is opened, so the heating plate 5 Stop heating. In addition to using the temperature signal as a basis for controlling the heating plate, the control device 6 can also use time conditions as a basis for controlling the state of the heating plate. Example t i The user can set a certain value according to the actual condition of the fuel cell system. When the fuel cell system is started, the humidifier 4 immediately generates an output signal to control the closing device 68 to be closed via the driving circuit 67. Therefore, the humidifier 4 immediately heats the humidifier 4. When the preset time is set to ㈣, the micro-controller 61 stops sending out the output signal, and the switching device is opened, so the heating plate 5 stops heating. In addition to the juice of the present invention, the gas outlet 2 of the humidifier 4 is a battery pack! The pipeline between the air inlet 13 can be configured with a temperature f ^ 8 丨, and the pipeline between the exhaust gas introduction end 43 of the humidifier 4 and the air outlet 14 of the fuel cell stack 1 can also be configured with a temperature sensor 82. The temperature values measured by the two temperature sensors 81 and 82 are compared by a temperature comparison unit, and a temperature difference signal s4 can be sent to the micro-controller 6 丨. Know the reaction gas sent to the air inlet 丨 3 of the fuel cell stack 1 and the reaction gas sent from the air outlet 14 of the fuel cell stack 1

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The temperature difference between the two data. And as a control of whether the heating plate 5 is heated, the output voltage vout of the fuel cell stack 1 according to 2 can also be measured by a voltage detection = 84, and sent by the voltage detection unit 84-the voltage is used as the number controller 61 to The micro-controller 61 is used to know the rain voltage condition of the fuel cell stack according to which it is used as a basis for controlling whether the heating plate 5 is heated. i When the value of the output voltage decreases, it may represent that the humidity of the reaction gas sent to the cell is insufficient, and the reason may be that the temperature in state 4 is too low due to the addition of. . Therefore, at this time, the micro-controller 6 丨 can try to suppress the heating plate 5 from starting to heat, so as to raise the temperature in the humidifier 4. In this way, the overall operation of the humidifier 4 and the fuel cell stack 1 can obtain the best performance. The micro-controller 61 may be connected with a warning unit 9 so that in case of an abnormal condition in the foregoing control operations, the warning unit 9 can issue a timely warning sound or light. The sixth diagram is a schematic diagram of the system connection of the second embodiment of the instant startup and temperature adjustment device of the fuel cell humidification module of the present invention, and the seventh diagram is a side view of the humidifier used in the second embodiment of the present invention . In this embodiment, most of the components are the same as the first embodiment shown in the second figure. The difference is that the humidifier 4 is equipped with several heating plates 5a, 5b, 5c, each heating The boards 5a, 5b, and 5c can be controlled by respective drive circuits 67a, 67b, and 67c in the control device and the switching devices 68a, 68b, and 68c. The humidifier 4 may also be provided with a plurality of temperature sensors 6 2 a, 6 2 b, and 6 2 c ′, which can respectively sense the temperature signals s 1 a,

! 234309 V. Description of the invention (10)-The micro-controller 61 can discriminate according to the received temperature signals s 丨 a, s 丨 b, slc, and according to the reference temperature signal = in the reference temperature value storage unit 63. The temperature condition of the humidifier 4 is displayed. The micro-controller 6 can control the temperature of the section of the humidifier 4 by generating the rain signal through the respective driving circuits 67a, 67b, 67c and 68a ~, 68b, 68c. With the above-mentioned design, when the fuel cell system is started, the reaction gas can instantly start and adjust the temperature through the humidifier, ^: to improve the working efficiency of the fuel cell, & the invention does have Industrial utilization price ^ Before the patent application of the present invention, no identical or similar patent or product was disclosed in advance, so the present invention has already met the requirements of the patent. The above description of the embodiment is only a description of the preferred embodiment of the present invention, and those skilled in the art can make other J types according to the above-mentioned description of the embodiment of the present invention: improvements and changes. However, these various kinds of "good and changes" based on the present examples should still fall within the scope of patents defined by the present invention. w τ

1234309 Brief description of the drawings-[Simplified description of the drawings] The first diagram shows the intention of a conventional fuel cell system equipped with a humidifier; the second diagram shows the fuel cell humidification module of the present invention. Schematic diagram of system connection of the first embodiment of the instant startup and temperature adjustment device; the third diagram is a perspective view of the humidifier used in the first embodiment of the present invention; the fourth diagram is a side view of the humidifier in the third diagram The fifth diagram is a three-dimensional exploded view of the heating plate separated from the humidifier in the third diagram; the sixth diagram is a system connection of the second embodiment of the instant startup and temperature adjustment device of the fuel cell humidification module of the present invention Schematic diagram; The seventh diagram is a side view of a humidifier used in the second embodiment of the present invention. Explanation of the symbols of each component in the figure: 1 Battery pack 11 Hydrogen gas inlet 12 Hydrogen gas out π 13 Air gas in V 131 Thermal insulation tube 14 Air out D 141 Thermal insulation tube 2 Hydrogen gas source

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Brief description of the drawing 3 Air source 4 Humidifier 41 Gas inlet 42 Gas outlet 43 Exhaust inlet 44 Exhaust outlet 45 End plate 5 Heating plate 6 Control device 61 Microcontroller 62 Temperature sensor 63 Reference temperature value storage Unit 64 Temperature comparison unit 65 Time set value storage unit 66 Control parameter setting unit 67 Drive circuit 68 Switching device 7 Power supply device 81 Temperature sensor 82 Temperature sensor 83 Temperature comparison unit 84 Voltage detection unit 9 Warning unit

Claims (1)

1234309 VI. Application for patent scope 1 · An instant startup and temperature adjustment device for a fuel cell humidification module is used to supply the reaction gas required for the fuel cell reaction to the fuel cell stack after humidity and temperature adjustment. The wet module includes: a fuel cell stack; a hydrogen source to supply hydrogen required for the fuel cell stack reaction; an air source to supply oxygen required for the fuel cell stack reaction; a humidifier, It is connected between the air source and the air inlet of the fuel cell stack. With the humidifier, the reaction gas supplied by the air source can be sent to the air inlet through the air inlet after being supplied with proper humidity and temperature adjustment. In the fuel cell stack; at least one heating plate is arranged in the humidifier to heat the reaction gas passing through the humidifier; a control device can be based on a preset when the fuel cell stack is started to operate Parameter conditions to control the heating action of the heating plate. 2. For the instant startup and temperature adjustment device of the fuel cell humidification module according to item 1 of the patent application scope, the control device includes: at least one temperature sensor for measuring the temperature condition of the humidifier, and A temperature signal is sent out; a microcontroller can receive the temperature signal generated by the temperature sensor, and control the heating plate according to the temperature signal. 3. For the instant startup and temperature adjustment device of the fuel cell humidification module in the scope of the patent application, it includes: Page 17! 2343〇9 Declared the scope of the patent 'shen ΐ ϊϊ storage unit, which can be used to store and provide-reference temperature 仏 number to the microcontroller; ^ 7 ΐ ϋ = ϋ 70, used to compare the temperature of the temperature sensor The signal and the reference temperature signal in the multi-degree value storage unit. Instant activation of the fuel cell humidification module of item 3: η: It also includes a control parameter setting unit for setting > testing degree value to the reference temperature value storage unit. 5. ΪΠΐί Range 2 fuel cell humidification module instant start, week >: device, its control device includes a time setting value storage = can provide-time signal to the control device, so that control matters ^ In the control, the time value in the time setting value storage unit can be used as the basis for controlling the heating plate. Storing the ° ° Temperature of the fuel cell humidification module of the patent application item 5 = Withering device, which further includes a control parameter setting unit, and a time signal to the time setting value storage unit. Λ As stated in the instant and temperature setting of the fuel cell humidification module in item 1 of the patent scope, the heating plate is arranged on the plate of the humidifier. ^ Ton 8. If the fuel cell humidification module in item 丨 of the patent application is applied, the instant start of the fuel cell humidification module 1234309 VI. Patent application scope and temperature control device, wherein the heating plate is arranged on one of the end plates of the humidifier. 9. If the instant startup and temperature adjustment device of the fuel cell humidification module according to item 1 of the scope of the patent application, wherein the pipeline between the gas outlet of the humidifier and the air inlet of the fuel cell stack is equipped with a temperature sensor, A temperature sensor is also arranged in the pipeline between the exhaust gas introduction end of the humidifier and the air outlet of the fuel cell stack. 10 · If the fuel cell humidification module is instantaneously started and temperature-adjusted, for example, in the scope of patent application, the output voltage of the fuel cell stack is measured by a voltage detection unit, and a voltage detection unit sends a A voltage signal is sent to the control circuit. Page 19