JP2008047504A - Fuel cell system and equipment for terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fuel cell system in which a simple positioning work and an assembling process are simplified when a hydrogen storage alloy container is joined with the fuel battery cell unit, and to provide equipment for terminal. <P>SOLUTION: The fuel battery cell unit 20 in which electric power is generated using hydrogen as the fuel, the hydrogen storage alloy container cabinet 18 that supplies hydrogen to the fuel battery cell unit 20, a piping route A arranged in the hydrogen storage alloy container cabinet 18, a pressure sensor for detection that is formed on a silicon substrate arranged between a piping route B arranged at the fuel battery cell unit 20, and a pressure regulating valve are provided. Then, the fuel battery cell unit 20 is joined with the hydrogen storage alloy container cabinet 18, and has a plurality of protruding parts 52a to 52c on the upper face of the fuel battery cell unit 20. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a fuel cell system using a fuel cell such as hydrogen as a power source for portable electronic devices and the like.

  Fuel cells such as hydrogen and methanol are used for various purposes such as video cameras, notebook personal computers, portable telephones, personal digital assistants (PDA), audio players, etc. due to their light weight and convenience. Applications of information processing devices as fuel cells are conceivable.

  The present invention relates to a hydrogen storage alloy container to which a hydrogen storage alloy material is applied and a fuel cell system using the same, and a fuel cell system particularly used for portable devices has been proposed.

  For example, Patent Document 1 listed below describes a fuel cell system for portable devices in which the gas release mechanism is composed of a hydrogen relief valve using a piezoelectric body and a flow path, and the structure is the same as that of the pressure adjustment mechanism. . This system also has a primary pressure detection mechanism for detecting the hydrogen pressure in the hydrogen storage alloy container, and the operation of the piezoelectric hydrogen relief valve is performed by a pressure control circuit.

  The potential difference generated by the primary pressure detection mechanism is transmitted to the pressure control circuit through a lead wire. When the pressure in the hydrogen storage alloy container exceeds the specified pressure, a voltage is applied from the pressure control circuit to the piezoelectric hydrogen relief valve to release hydrogen to the outside. As a result, hydrogen can be safely released to the outside.

  When the internal pressure of the hydrogen storage alloy container exceeds the specified pressure, the primary pressure detection mechanism detects that the pressure exceeds the specified pressure, and the pressure control circuit applies the piezoelectric body of the pressure adjustment mechanism to operate the fuel cell. A voltage is applied and hydrogen is supplied to drive the fuel cell. The voltage application for operating the piezoelectric control valve when the fuel battery cell is not driven utilizes power stored in advance in the secondary battery.

Further, in Patent Document 2 below, generally in the case of a fuel cell unit, a plate-shaped solid polymer electrolyte, a cathode-side electrode plate disposed on one side thereof, and an anode-side electrode plate disposed on the other side thereof A cathode-side metal plate that is arranged on the surface of the cathode-side electrode plate and allows gas to flow to the inner surface side; and a cathode-side metal plate that is arranged on the surface of the anode-side electrode plate and allows fuel to flow to the inner surface side. A fuel cell comprising an anode side metal plate is described. This fuel cell is sealed by caulking with the peripheral edges of the metal plates on both sides being electrically insulated, and is sandwiched between the metal plates.
JP 2004-362786 A JP 2006-092783 A

  For example, in a small fuel cell system including a hydrogen storage material such as Patent Document 1 and a container for storing the same, the following problems are encountered when the technologies of Patent Document 1 and Patent Document 2 are combined. There is a point.

  Usually, in the combination of a hydrogen storage alloy container casing and a fuel cell unit, it is common to provide a plurality of vent holes on the upper surface of the fuel cell unit. However, how can the air supplied from the outside be led to the vent on the upper surface of the fuel cell unit, or can the stability and reliability be secured when the fuel cell is inserted and held in the portable battery compartment? Are not clearly described in Patent Document 1 and Patent Document 2.

  The glass substrate is exposed on the upper surface of the hydrogen storage alloy container casing, and the hydrogen suction port of the fuel cell unit is coupled to make assembly work difficult. In addition, the upper surface of the hydrogen storage alloy container casing needs to be positioned for alignment with the fuel cell unit, and work when joining the hydrogen inlet provided on the fuel cell side with an adhesive. There is a possibility that a mistake of a person may occur. Furthermore, in order to apply a mechanical load, a tool for protecting the electrode plate and a special tool such as caulking are required. Therefore, the work is complicated and a work process by a skilled worker is required.

  Accordingly, the present invention has been made in view of the above problems, and its object is to provide a fuel cell system that simplifies a simple positioning operation and an assembling process when a hydrogen storage alloy container and a fuel cell unit are combined. It is to provide terminal equipment.

  That is, the invention described in claim 1 includes a fuel cell unit that generates electric power using hydrogen as a fuel, a hydrogen storage alloy container housing that supplies hydrogen to the fuel cell unit, and a hydrogen storage alloy container housing. A pressure sensor for detection formed on a silicon substrate disposed between the first connection port disposed and the second connection port disposed in the fuel cell, and a pressure control valve. In the fuel cell system, the hydrogen storage alloy container housing and the fuel cell unit are coupled, and the upper surface of the fuel cell unit has a plurality of protrusions.

  According to a second aspect of the present invention, in the first aspect of the present invention, the glass substrate provided with a protruding piping path on the upper surface of the hydrogen storage alloy container casing is exposed, and the piping path and the fuel cell are exposed. The hydrogen injection port of the cell unit is connected.

  According to a third aspect of the present invention, in the first aspect of the present invention, an electrode plate is provided between the first metal plate and the second metal plate disposed in the fuel cell unit, and the electrode The contact pressure of the plate is composed of an attractive force between a permanent magnet disposed on the first metal plate and a magnetic material disposed on the second metal plate.

  The invention according to claim 4 is the invention according to claim 3, wherein the first metal plate disposed in the fuel cell unit is aligned with the second metal plate. A plurality of positioning pins are provided upright.

  The invention according to claim 5 is the invention according to claim 3, wherein an elastically deformable portion having a bending action is formed in the second metal plate.

  The invention according to claim 6 is the invention according to any one of claims 1 to 3, wherein a fin is provided on the outer surface of the housing of the hydrogen storage alloy, and a vent is provided in the recess of the fin. It is formed.

  The invention according to claim 7 is a fuel cell system according to claim 1, a secondary battery, a device load portion, and a pressure-curer composition isotherm (PCT) coefficient in a plurality of temperature characteristics. And a switching switch disposed between the device load section and the secondary battery and the fuel cell system.

  The invention according to claim 8 is the invention according to claim 7, wherein the terminal device is a cradle device on which the device load section is mounted.

  The invention according to claim 9 is a fuel cell unit that generates electric power using hydrogen as a fuel, a hydrogen storage alloy container housing for supplying hydrogen to the fuel cell unit, and a hydrogen storage alloy container housing disposed in the hydrogen storage alloy container housing A pressure sensor for detection formed on a silicon substrate disposed between the first connection port formed and the second connection port disposed in the fuel cell, the pressure control valve, and the hydrogen storage A fuel cell unit, a secondary battery, a device load unit, and a plurality of protrusions formed on the upper surface of the fuel cell unit, the alloy container housing and the fuel cell unit being coupled to each other For a terminal having storage means having a pressure-currency isotherm (PCT) coefficient in the temperature characteristics of the device, and a switching switch arranged between the device load section and the secondary battery and the fuel cell unit Equipment, Characterized by comprising.

  According to a tenth aspect of the present invention, in the invention according to the ninth aspect, the terminal device is a cradle device on which the device load section is mounted.

  According to the present invention, when a hydrogen storage alloy container and a fuel cell unit are joined, a simple positioning operation and an assembling process can be simplified, and the entire device can be made smaller and more reliable. A battery system and a terminal device can be provided.

  Further, according to the present invention, the glass substrate provided with the piping path protruding from the upper surface of the hydrogen storage alloy container casing is exposed, and the assembling work is performed by combining the piping path and the hydrogen inlet of the fuel cell unit. Becomes easy.

  Furthermore, according to the present invention, a positioning pin for positioning with the fuel cell unit is formed on the upper surface of the hydrogen storage alloy container casing, so that the hydrogen inlet provided on the fuel cell side It is possible to prevent the occurrence of operator error when loosely fitting and joining with an adhesive.

  According to the present invention, a mechanical process is simplified without applying a mechanical load and without requiring a special tool or the like.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1A (a) is a cross-sectional view showing the configuration of the fuel cell system according to the first embodiment of the present invention.

  In FIG. 1A (a), the fuel cell system 10 includes a second pressure adjustment mechanism having a function of adjusting the hydrogen pressure when supplying hydrogen to the fuel cell unit 20 to be equal to or lower than the equilibrium pressure of the hydrogen storage alloy. The upper layer of the hydrogen flow path formed on the silicon substrate 14 and the lower layer of the hydrogen flow path provided by the first silicon substrate 13 formed on the first glass substrate 11 are a hydrogen storage alloy container housing. 18 is provided.

  A first silicon substrate 13 and a second silicon substrate 14 are arranged on the first glass substrate 11. A temperature sensor 15 and a head amplifier chip (HA chip) 16 for an amplitude detection circuit (signal amplification circuit) are embedded in the second silicon substrate 14 placed on the first glass substrate 11. On the other hand, the second silicon substrate 14 on the first silicon substrate 13 includes a piping path A21 extending to the hydrogen storage alloy container 17 via the first glass substrate 11, the second glass substrate 12, and A piping path B22 extending to the fuel cell unit 20 via the heat insulating member 19 is provided. The piping path A21 and the piping path B22 are connected to supply hydrogen to the fuel cell unit 20.

  The second glass substrate 12 is positioned in parallel with the first glass substrate 11 in order to prevent electrostatic breakdown of each pressure sensor and pressure regulating valve element disposed in the space with the first glass substrate 11. In this way, it is bonded to a holding plate (not shown). The fuel cell unit 20 supplies power using hydrogen as a fuel. The heat insulating member is a vacuum heat insulating material in which a conductive powder is used as a core, the core is sealed in a non-woven bag and covered with an outer cover. The second glass substrate 12 is in close contact with the device 19. When this vacuum heat insulating material is used, since the thickness of the heat insulating member 19 is several mm, it is desirable to directly bond the vacuum heat insulating material to the hydrogen storage alloy container casing 18 without using the second glass substrate. .

  The hydrogen storage alloy container 17 and the hydrogen storage alloy container housing 18 are provided with a hydrogen supply port 24. The hydrogen replenishing port 24 has a mechanism that opens the valve when connected in a detachable manner. Then, a hydrogen supply cylinder such as a hydrogen generator that generates hydrogen by the porosity of methanol, ethanol, dimethyl ether or the like is connected to the hydrogen supply port 24 and injected, so that the hydrogen storage alloy in the hydrogen storage alloy container 17 is injected. Hydrogen is replenished and stored.

  The hydrogen storage alloy container 17 has a rectangular parallelepiped shape with a short length in the thickness direction, and the fuel cell unit 20 is disposed in close contact with the hydrogen storage alloy container 17 in the thickness direction. As an example of the external dimensions of the hydrogen storage alloy container casing 18, the material constituting the rectangular hydrogen storage alloy container casing 18 is a metal such as aluminum or stainless steel so as to withstand the pressure of the hydrogen storage alloy container 17. Used. In the case of aluminum, a plurality of cooling fins 26 are formed on the outer surface of the hydrogen storage alloy container housing 18 by a number of groove processing or the like.

  An air suction port 25 is inserted between the first glass substrate 11 and the second glass substrate 12. The air suction port 25 is provided with an opening in the groove portion of the fin 26 except for one surface of the hydrogen storage alloy container housing 18 to which the terminal substrates 30a and 30b shown in FIG. 1A (b) are attached. Air can be sucked without being obstructed by a leaf spring member (not shown) for pressing against the terminal of the terminal board 30a during insertion. Further, the heat insulating member 19 is interposed between the fuel battery cell 20 and the second glass substrate 12 so that the heat generated from the fuel battery cell unit 20 can be cut off and disposed on the second silicon substrate 14. Incorrect detection of the temperature sensor 15 can be prevented. Further, pin terminals 29 and 33 are coupled to the terminal boards 30a and 30b. The pin terminal 33 is used for the output voltage of the fuel cell. The pin terminal 29, the temperature sensor 15, the HA chip 16, and the relay terminal board are connected by a bonding wire 28.

  Further, as shown in FIG. 1A (b), the terminal substrate 30a includes a temperature sensor, a detection pressure sensor, signal lines 31a to 31h that are transmitted from the pressure control valve to the control circuit, and a fuel cell. A drive line and a safety valve for supplying power from the side to the device load unit and the secondary battery, and terminals of drive lines 32a to 32g for supplying power to the detection pressure sensor and the pressure control valve are provided. The terminal board 30b is provided with one terminal 30b of a drive line for supplying power from the fuel cell side to the device load section and the secondary battery, and a ground terminal (GND) 31i.

  By arranging two different sets of drive lines for supplying power on the same terminal board, assembly man-hours can be reduced and the fuel cell system can be simplified without routing the wiring in the fuel cell system. can do. A space between the first glass substrate 11 and the second glass substrate 12 is configured as a pressure adjusting mechanism.

  Here, another configuration example of the fuel cell system according to the first embodiment of the present invention will be described.

  FIG. 1B is a cross-sectional view showing a configuration example of a fuel cell system using a stainless steel (stainless steel) metal plate 12a instead of the second glass substrate 12 and the heat insulating member 19 shown in FIG. 1A (a). 1B (b) is a configuration diagram showing an arrangement example of the terminal boards 30a and 30b in FIG. 1B (a).

  In FIG. 1B (a), the metal plate 12a has a plurality of concave fins 26 for cooling the fuel cell 20 on the second silicon substrate 14 side and several pieces for supporting the fuel cell 20. The protrusion 12b is provided. Further, a temperature sensor 15 is disposed near the piping path 22 on the lower surface of the fuel cell 20, and a long groove (not shown) is formed in the metal plate 12 a in order to align the wiring of the temperature sensor 15. ing. The surface of the temperature sensor 15 and the lower surface of the fuel cell 20 have a contact or a minute gap. Further, the temperature sensor 15 may be opposed to the fuel cell 20 at the back surface position.

  A second silicon substrate 14 is formed on the first glass substrate 13, and the HA chip 16 and a sine wave generation circuit 38 are bonded to the second silicon substrate 14. The arrangement of the other components is the same as that of the fuel cell system shown in FIG.

  Further, as shown in FIG. 1B (b), the terminal board 30a includes signal lines 31a to 31g for transmitting to a control circuit (CPU 125 shown in FIG. 8) from a pressure sensor for detection, which will be described later, and a pressure regulating valve. Further, there are provided drive lines and safety valves for supplying power from the fuel cell side to the device load section and the secondary battery, and terminals for drive lines 32a to 32e for supplying power to the pressure sensor for detection and the pressure regulating valve. The terminal board 30b is provided with a drive line 32g for supplying power to the temperature sensor and a signal line 31g for transmitting from the temperature sensor to the control circuit (CPU 125). Here, the terminal substrate 30a is bonded to the hydrogen storage alloy casing 18 so that the pin terminals 29 of the terminal substrate 30a are aligned from the back to the front so that the pin terminals 29 are easily aligned with the semiconductor substrate. Has been.

  Thus, if the temperature sensor is arranged in the vicinity of the fuel cell, the temperature rise of the fuel cell can be monitored almost directly by the temperature sensor, the fuel cell system can be started smoothly, and the device load Power can be supplied to the unit and the secondary battery.

  The equilibrium pressure of the hydrogen storage alloy also changes depending on the temperature of the hydrogen storage alloy, and the equilibrium pressure increases as the temperature rises. For example, when a hydrogen storage alloy mainly composed of AB5 type LaNi5 is used, it is assumed that the use environment is about 0 to 45 ° C., and the equilibrium pressure is 0 ° C. or higher and normal pressure is 45 ° C. or higher and 0.6 MPa. It is preferable to use a material for hydrogen storage alloy having an equilibrium pressure at 20 ° C. of about 0.25 to 0.35 MPa so as not to exceed 1.0 MPa at 60 ° C. The hydrogen storage alloy container casing 18 is combined with the fuel cell unit 20, and the path from the hydrogen storage container 17 to the fuel cell unit 20 is integrated to form the fuel cell system of the present embodiment. The temperature sensor 15 is provided to measure the temperature in the hydrogen storage alloy container casing 18.

  As described above, the hydrogen storage container casing is combined with the fuel battery cell, and the path from the hydrogen storage container to the fuel battery cell is integrated, so that the fuel cell system of this embodiment is obtained.

  FIG. 2 is a cross-sectional view showing a detailed configuration of the pressure adjustment mechanism portion of the fuel cell system 10 shown in FIG. 1A (a).

  In FIG. 2, the first glass substrate 11 is disposed on the hydrogen storage alloy container 17 via an inclination adjusting member 35 and an O-ring (packing material) 36. A second silicon substrate 14 and a third silicon substrate 37 are formed on the first silicon substrate 13, and the temperature sensor 15 is disposed on the third silicon substrate 37. Here, the temperature sensor 15 is on the third silicon substrate 37, but may be the second silicon substrate 14 as shown in FIG. 1A.

  A movable drive electrode plate 45 joined to the diaphragm 43 is provided at an upper position on the second silicon substrate 14. The relay terminal substrate 47 is provided with a fixed drive electrode plate 46. The movable drive electrode plate 45 and the fixed drive electrode plate 46 are arranged at opposing positions, and are configured as one set so as to detect a change in capacitance. In this case, although not shown, two sets of drive electrode plates may be arranged.

  A cavity 44 is provided between the first silicon substrate 13 forming the flow path on the lower surface side and the detection pressure sensor. A protective film 42 is formed on the inner surface of the cavity 44 to protect the second silicon substrate 14 from being corroded by gas or the like.

  On the other hand, a sine wave voltage circuit 40 using a crystal oscillator and an IC chip 38 for an amplitude detection (drive circuit / amplitude detection) circuit are coupled to the third silicon substrate 37 on the upper surface. Further, a plurality of pin terminals 29 a are coupled to the upper side of the third silicon substrate 37. The temperature sensor 15 is fixed to the lower portion of the third silicon substrate 37, and through holes for lead wires are formed on both sides thereof.

  The above IC chip, relay terminal board, and a plurality of pin terminals are connected by a bonding wire group 28a (bonding wire 28). In operation, the sine wave voltage circuit 40 (driving circuit of the IC chip 38 for the oscillator and driving circuit / amplitude detecting circuit) applies pressure to the diaphragm 43 which is forcibly vibrated by an instruction signal from the control circuit (CPU 125 shown in FIG. 8). When the pressure is reduced or reduced, an output signal from the amplitude circuit of the IC chip 38 for the drive circuit / detection circuit that detects the amplitude according to the output signal is input to the control circuit (CPU 125). The control circuit (CPU 125) reads out from the ROM (temperature characteristic data) from the output signal from the temperature sensor, and performs feedback control based on the pressure value in the pipe of the fluid flow path.

  Note that if a thin pipe (capillary) is placed between the hydrogen storage alloy container housing and the on-off valve, the pressure when the pressure adjustment valve is driven is reduced by the pressure loss when hydrogen passes through. However, the load can be reduced.

  FIG. 3 is an external perspective view showing an example in which the above-described fuel cell unit 20 and hydrogen storage alloy container casing 18 are joined and assembled.

  As described above, the fuel cell unit 20 is mounted on the hydrogen storage alloy container housing 18 and sealed with an ultraviolet curing adhesive (not shown). The fuel cell unit 20 has a cathode electrode covered with stainless steel provided with a plurality of vent holes 51 exposed on the upper surface of the fuel cell. Furthermore, a plurality of protrusions 52 a, 52 b, 52 c are provided on the upper surface of the fuel cell unit 20.

  The main body of the fuel cell system is coupled by the hydrogen storage alloy container casing 18 and the fuel cell unit 20. In FIG. 3, an opening for allowing air to pass between the protrusions 52b and 52c in the foreground (for example, a space (air can flow) when the fuel cell system is inserted into the portable battery storage chamber). An air inlet 55 is provided on the line where the air inlet 55 and the projection of the cooling fin 54 intersect, and a chamfer with a radius of about 0.3 to 1 mm is provided between the openings. Similar chamfering (with a radius of about 0.3 to 1 mm) is also provided at the edge portion of the protruding projecting portion end.

  Furthermore, a plurality of cooling fins 54 that are formed in a strip-like shape on the front surface of the fuel cell system are provided. An air suction port 57, a hydrogen discharge port 58, and a hydrogen supply port 59 are provided in the recesses of these cooling fins 54.

  In such a configuration, when the fuel cell system is inserted into a battery storage chamber (not shown), an air inlet 55 on the fuel cell system side and a cell lid (not shown) in which the malt plane is joined are shown. , Separated by a desired interval. Air sucked from the malt plane of the battery lid and passed through the air inlet 55 is sucked into the plurality of vent holes 51 provided. At this time, as shown in FIG. 3, by chamfering the protrusions of the air inlet 55 and the protrusions of the cooling fins 54, the inflowing air swirls at the outlet of the air inlet 55 (cavitation phenomenon). Can be reduced.

  4 is a cross-sectional view showing the structure of the fuel cell unit. FIG. 4B is a cross-sectional view near one end, and FIG. 4B is a cross-sectional view near the other end.

  The fuel cell unit 20 includes, for example, a polymer solid electrolyte membrane 61 made of a plate material of about 75 to 100 μm, an anode side electrode plate 62, a first metal plate 64 made of stainless steel of about 0.5 to 1 mm, a cathode A side electrode plate 63 and a second metal plate 66 made of a magnetic material of about 0.5 to 1 mm, for example, are provided. The second metal plate 66 has a plurality of ventilation holes (air suction holes 67) formed by etching.

  In the gap (space) between the solid polymer electrolyte membrane 61 disposed on the first metal plate 64 and the inner side wall of the first metal plate 64, a film magnet layer 71a magnetized in the thickness direction is formed. It is glued. In the film magnet layer 71a, a film layer made of a rare earth magnet such as SmCo and the first metal plate 64 are bonded together with an ultraviolet curable adhesive.

  A hydrogen injection port 65 is formed on the first metal plate 64, and a plurality of positioning pins 72a are provided upright. The solid polymer electrolyte membrane 61, the anode side electrode plate 62, and the cathode side electrode plate 63 are laminated, and a bush 75a made of an insulating material is embedded in the second metal plate 66.

  As an assembling procedure, the bush 75a of the second metal plate 66 is inserted into the positioning pin 72a, whereby the first metal plate 64 and the second metal plate 66 are coupled by the attractive force of the film magnet layer 71a. Therefore, the polymer solid electrolyte membrane 61, the anode side electrode plate 62, and the cathode side electrode plate 63 have a structure in which pressure is applied to each other.

  In this fuel cell system, as described above, both ends of the unit are sealed with a sealing material made of a synthetic resin or a rubber material so that the outer shape is a rectangular shape, and a plurality of protrusions are formed on the upper surface. Furthermore, a concave surface is formed on the upper surface of the hydrogen storage alloy container casing along the longitudinal direction of the fuel cell, and the depth of the concave surface is the upper surface of the heat insulating member 19 or the upper surface of the second glass substrate 12. The exposed hole position of the piping path B22 and the hydrogen inlet 65 are joined with an ultraviolet curable adhesive.

  In this way, a recess is provided on the upper surface of the hydrogen storage alloy container housing, the fuel cell unit is inserted into the recess, both sides of the synthetic resin portion are press-fitted, and bonded with a small screw or an adhesive (not shown). A plurality of protrusions are exposed. As described above, the protrusions are formed on the fuel cell unit 20 to facilitate the assembly.

  Further, by appropriately selecting the attractive force of the film magnet layer 71a, the amount of pressurization is adjusted from the laminated structure of the polymer solid electrolyte membrane 61, the anode side electrode plate 62 and the cathode side electrode plate 63, The first and second metal plates 64 and 65 can be integrated. In this case, the second metal plate 66 includes a plurality of slits 68 having a bending action and a pressing portion 69 that presses against the cathode side electrode plate 63.

  As described above, in the second metal plate 66, the pressing portion 69 is partially provided, so that the peripheral surface to the cathode side electrode plate 63 is uniformly brought into a secondary processing surface. Thus, flatness can be maintained.

  Further, the fuel cell system is inserted into a battery storage chamber (not shown) so that the amount of pressurization does not increase or decrease due to the contact pressure between the protrusion of the fuel cell system and the guide surface on the inner surface of the battery storage chamber. Further, a plurality of positioning pins are provided upright on the upper surface of the hydrogen storage alloy container casing 18, and a plurality of fitting holes are provided in the first metal plate 64 or the synthetic resin portion in the fuel cell unit 20. After the fitting hole in the battery cell unit is inserted along the positioning pin 72a of the hydrogen storage alloy container housing, the hydrogen storage alloy container housing 18 and the fuel cell unit 20 are joined by bonding with an ultraviolet curable adhesive. This enables accurate positioning.

  FIG. 4B shows the vicinity of the other end of the fuel cell unit shown in FIG.

  The structure of the other end is substantially the same shape as the structure of the fuel cell unit 20 shown in FIG. Therefore, the same reference numbers are used except that the reference number a is replaced with b in the same components as in FIG. 4A, and the description thereof is omitted here. However, the protrusion on the upper surface is the entire surface in the width direction, and no step is provided as an air inlet.

  FIG. 5 is a block configuration diagram of two types of fuel cell systems in the first embodiment.

  In FIG. 5A, a hydrogen storage alloy container 80 is provided in the hydrogen storage alloy container casing 18 described above. An open / close valve 81, a detection pressure sensor 82, a safety valve 83, a pressure adjustment valve 84, and an auxiliary pressure adjustment valve 85 are disposed from the hydrogen storage alloy container 80 through a piping path A (not shown). The pressure adjustment valve 84 and the auxiliary pressure adjustment valve 85 are connected to the fuel cell 86 via a piping path B (not shown).

  The on-off valve 81 is a hydrogen replenishing on-off valve having a valve mechanism that opens when connected to the piping path A and closes when the connection is released. The safety valve 83 is connected between the detection pressure sensor 82 and the outside air port, and is configured by a known electrostatic drive type microvalve or a diaphragm of a thermally deformable conductive material (for example, a shape memory alloy material), It has a switch function that can be turned on (opens the valve) or off (closes the valve).

  5B, from the hydrogen storage alloy container 90, the first and second on-off valves 91 and 92, the first and second detection pressure sensors 93 are connected via a piping path A (not shown). And 94 are arranged. The first and second safety valves 95 and 96 are arranged between the first and second detection pressure sensors 93 and 94 and the outside air port. Further, first and second pressure regulating valves 97 and 98 are arranged between the first and second detection pressure sensors 93 and 94 and the fuel cell 99.

  Next, replenishment of hydrogen to the hydrogen storage alloy container and operation at the time of driving the fuel cell will be described.

  Referring to FIG. 5 (b), the above-described hydrogen supply cylinder is connected to a hydrogen supply port having a mechanism that opens the valve when the hydrogen storage alloy container 90 is detachably connected when hydrogen is not shown. Then, hydrogen is supplied to and stored in the hydrogen storage alloy in the hydrogen storage alloy container 90 through the hydrogen supply port. The replenished hydrogen is stored in the hydrogen storage alloy, and is connected to the piping path from the first and second on-off valves 91 and 92 to the fuel cell 99 in a state where the piping path and the on-off valve and the subsequent valves are shut off. Residual hydrogen gas is present. When the power switch of the portable device is turned on, the first and second on-off valves 91 and 92 are opened and stored in the hydrogen storage alloy, but supplied to the pressure adjustment valve and mixed with the remaining hydrogen gas to store the hydrogen. It is the same as the internal pressure in the alloy.

  Next, output signals from the detectors of the first and second detection pressure sensors 93 and 94 are stored in a temperature characteristic table (for example, the table in FIG. 6A) stored in a memory (ROM) (not shown). Convert the pressure to the pressure adjustment valve. When the hydrogen fuel cell operates, the fuel cell 99 starts operating when the hydrogen gas pressure to the fuel cell 99 reaches 0.1 MPa. In the example (Company A) shown in FIG. 5A, the hydrogen stored in the hydrogen storage alloy to replenish the consumed hydrogen has an on-off valve. From the on-off valve 81, a detection pressure sensor 82, a pressure The fuel cell 86 is supplied to the fuel cell 86 via the regulating valve 84 in order. The fuel cell 86 continuously operates while keeping the hydrogen pressure on the fuel cell 86 side constant, and stably supplies power to a portable device (not shown). In this case, the detection pressure sensor 82 and the safety valve 81 are directly connected. In the table of FIG. 6A, management data to be managed such as hydrogen storage alloy type, hydrogen storage amount, number of safety valves and flow paths, electric capacity, in-pipe pressure limit value, pressure sensor sensitivity, and manufacturing date are stored. ing. Furthermore, when calculating the discharge flow rate of the pressure regulating valve based on the table of FIG. 6A, the differential pressure between the measured value output from the detection pressure sensor and the measured value output from the pressure regulating valve is calculated. It can be detected by seeking.

  In this embodiment, in order to reduce the load applied to the pressure regulating valve by the high-pressure hydrogen gas, in the example (Company B) shown in FIG. 6B, a plurality (here, two) of on-off valves 91 and 92 are detected. Pressure sensors 93 and 94 and pressure regulating valves 97 and 98 are arranged in parallel. First and second detection pressure sensors 93 and 94 are directly connected to the first and second safety valves 95 and 96, respectively. The first and second safety valves 95 and 96 are connected to the outside air port. The first and second on-off valves 94 and 92 and the first and second safety valves 95 and 96 are composed of a known electrostatic drive type micro valve or a heat-deformed conductive material (for example, a shape memory alloy material). Each valve is opened by the operation of a diaphragm having a switch function that can be turned on (opens the valve) or off (closes the valve). As another example (Company C), when the second safety valve is not used, it is formed as a dummy.

  Here, in the case of Company B, after a predetermined time when hydrogen gas is divided, when the pressure sensor for detection reaches a desired value, the first on-off valve 91 is closed and the second on-off valve 92 is opened. The second detection pressure sensor 94 performs monitoring. The first and second on-off valves 95 and 96 repeat the on / off operation based on the monitoring of the detection pressure sensor. When the pressure sensor for detection reaches a desired hydrogen gas pressure, the pressure regulating valve starts to control so that the pressure in the fuel cell is 0.1 MPa. Furthermore, it is also possible to use a plurality of on-off valves at the same time to protect the pressure regulating valve.

  In such a configuration in which the on / off operation is repeated, it is desirable that a chip such as a CPU or an analog switch is embedded in the second silicon substrate.

  Next, the voltage applied from the pressure sensor for detection on the silicon substrate to the pressure regulating valve will be described with reference to FIG.

As shown in FIG. 7, an AB5 type LaNi5 or AB2 type alloy, which is a fuel storage alloy material, will be described as an example. The temperature characteristics of these alloy materials vary depending on the manufacturer and the type manufactured by the same manufacturer. In the present embodiment, by determining the voltage to be applied to the piezoelectric adjustment valve based on the table of temperature characteristics, an error value due to the fuel storage alloy material (for example, temperature characteristics of hydrogen storage alloys manufactured by A company and B company). Can be corrected under the current operating temperature of 35 ° C. (In this case, it is 0.25 MPa for Company A and 0.40 MPa for Company B at 20 ° C., and the limit value is 1 MPa for both Company A and Company B.)
The pressure reference temperature for the remaining amount display is set to 27 ° C. For example, in information devices such as single-lens reflex digital cameras powered by fuel cells such as hydrogen and methanol, display lighting devices using EL (electroluminescence) elements and LEDs (light emitting diodes) consume much power, and lighting display control Becomes difficult to use. Alternatively, if the user tries to take a picture in actual use (for example, when waiting for a shutter chance), including a shooting preparation operation such as detection of attachment / detachment of the interchangeable lens by communication between the interchangeable lens and the camera body, the user The automatic control of fuel cell remaining amount display and device operable time display by attitude control that relied on the digital camera side does not match the user's intention. There is.

  From the above, when the remaining amount is displayed, the temperature at the current environmental use is set to 35 degrees because it is not affected by the temperature characteristics as much as possible.

  Here, the property required of the hydrogen storage alloy material is that the reaction is fast and there is hysteresis between the storage pressure and the release equilibrium pressure, and the object is to correct an error caused by a difference in the material. There is a temperature difference between the place where the temperature sensor is arranged and the internal pressure temperature of the piping path A from the hydrogen storage alloy container housing and the internal pressure temperature difference of the pressure sensor. It is difficult to measure and display the remaining amount each time the electronic device is used. The initial value is 20 ° C., and the remaining amount display value is obtained from the pressure sensor value of 27.5 ° C. which is the average (for example, the instruction from the CPU is 27 ° C. within a predetermined group range) by a PCT diagram. The remaining amount display error can be suppressed without being affected by the overpressure due to the temperature change.

  Here, the average value and grouping (a method in which the temperature measurement range is preliminarily plotted every 2 ° C to 3 ° C to determine the measurement points and the upper and lower ranges are regarded as measurement points) can be pre- The memory capacity of the memory that stores the pressure diagram for each measured temperature can be reduced. Alternatively, although not shown in the figure, the position where the temperature sensor is arranged even when a pressure sensor that joins a diaphragm from a plurality of drive electrode plates using a plurality of oscillators is built in the wall in the hydrogen storage alloy container. There is a temperature difference in the hydrogen storage alloy container covered with metal material. The pair of drive electrode plates in the hydrogen storage alloy container are arranged apart from each other, and can be switched to a differential output signal when the remaining amount decreases. Thus, since there is a difference in the environment, a temperature table of an average value of the current use environment temperature of 35 ° C. and the normal temperature of 20 ° C. used for the temperature characteristics is used.

  In the case where the remaining capacity is measured using a pair of drive electrode plates in the hydrogen storage alloy container, or in the case where the remaining hydrogen amount is measured by a known strain gauge (Japanese Patent Laid-Open No. 6-33787). In order to obtain the data characteristic table in advance before shipping, the same container as the product is secondarily processed, and the output of the temperature sensor is 20 ° C, 23 ° C, 27 ° C, 30 ° C, 32 ° C, 35 ° C, 40 ° C, The thermomodule is attached to the outer surface of the container so that it can change every 45 ° C. The valve of the hydrogen storage alloy container is opened, the amount of released hydrogen is obtained with a hydrogen flow meter for each temperature, and the amount of remaining hydrogen is obtained through an amplitude voltage circuit from a corresponding pair of drive electrode plates. That is, in the configuration of the fuel cell in FIG. 5A, the relationship of the total consumption time of the fuel cell for each amount of released hydrogen is obtained.

  The remaining amount is displayed as a percentage of the remaining time or (remaining time / total consumption time), and the remaining time is obtained by subtracting the number of times the pressure regulating valve and safety valve are used and the cumulative usage time from the total consumption time. . Further, the PCT coefficient at each temperature is determined, and the correlation (weighting) is determined. The data obtained here (tables in FIGS. 6A and 6B) is stored in the ROM. If it does in this way, the residual amount detection sensor provided in the hydrogen storage alloy container can also be abbreviate | omitted.

  By arranging a thermo module (for example, Peltier element) wiring board in the concave surface of the outer surface of the hydrogen storage alloy container housing made of a stainless steel metal material, the temperature control by the CPU is set to 20 ° C. (room temperature). It can be carried out. As a result, the output signal of the detection pressure sensor can be stabilized. Therefore, only the nearby data can be stored at room temperature (20 ° C.). Therefore, the storage capacity of the memory (for example, ROM) can be greatly reduced.

  Next, with reference to FIGS. 8A and 8B, a description will be given of a combination of a fuel cell system and a remaining amount display of an electronic device in which a secondary battery or a CPU is incorporated.

  The hydrogen storage alloy container housing is formed with a hydrogen storage alloy container 100, an open / close 102 valve, a detection pressure sensor 103, and a pressure adjustment valve 104 disposed on the silicon substrate 101, and further includes a temperature sensor 105. ing. The fuel battery cell 110 includes an anode electrode 111, a cathode electrode 112, and a polymer solid electrolyte membrane 113. A portable electronic device (for example, cradle) 120 includes a CPU 125, a secondary charger (secondary battery) 121 that initially drives the on-off valve 102, the detection pressure sensor 103, and the pressure adjustment valve 104 described above, A current detector for detecting the remaining amount of the secondary battery 121, an imaging unit, an electronic camera or the like (device load unit) 123, a changeover switch 122, and temperature characteristic data (in-pipe pressure limit value for each vendor or model: FIG. 6) (A) and (b) are stored in the memory (storage means) 127, a display unit 128 for displaying the remaining amount of the fuel cell, and an input operation unit 126 including user operation input keys. Yes.

  A piping path from the pressure regulating valve 104 is connected to the anode electrode 111. The CPU (control circuit) 125 monitors the output signal of the temperature sensor 105 embedded in the silicon substrate 101. Moreover, the remaining amount display of the fuel cell 110 and the current value of the device load unit 123 are monitored. When the fuel cell 110 is connected to the electronic device 120, the CPU 125 can detect the remaining amount from the output signal of the device load unit 123 by the changeover switch (SW) 122. However, by ignoring here, the output signal from the pressure sensor 103 for detection and the output signal from the temperature sensor 105 are given priority, and the hydrogen storage alloy container of company B specified by the user stored in the memory 127 is AB5. Based on the type and temperature characteristics of the type hydrogen storage alloy container, the remaining amount calculation value of the data (tables (a) and (b) of FIG. 6) is used to display on the display unit (display) 128. Thereby, the user can confirm.

  For example, in the example shown in FIG. 9A, the hydrogen storage alloy 131 and methanol 132 are displayed on the display unit 128. However, when the user operates the operation input unit 126, for example, FIG. As shown in FIG. 5, the AB5 type hydrogen alloy 133 and the AB2 type hydrogen alloy 134 can be selected and displayed.

  Alternatively, the list display of FIG. 9 can be displayed as shown in FIGS. 9C and 9D, but it is difficult for the user to select the attached fuel cell from such a list display. It can be considered. Therefore, when manufacturing the device load unit 123, it is desirable to store permission data of the types of hydrogen storage alloys that can be used by the device load unit 123 in the memory 127.

  At startup when the operation start signal of the device load unit 123 is input, the CPU 125 operates the secondary battery 121. That is, as shown in FIG. 8B, the fuel cell 110 is connected to the secondary battery 121 by the changeover switch 122 during charging. In the case of a cradle that is a portable device, a device load unit (for example, an electronic camera) 123 is mounted, and when the fuel cell 110 operates, the CPU 125 operates the changeover switch 122 and the secondary battery 121 is inactive. To do. Then, the control of the pressure regulating valve 104 and the fuel cell 110 are in an operating state, and the device load unit 123 operates. In such a case, there is an advantage that the CPU 125 can be used even outdoors without an outlet by using only the fuel cell 110 or using the fuel cell 110 and the secondary battery 121 together.

(Second Embodiment)
Next, a second embodiment of the present invention will be described.

  When the fuel cell unit is configured as shown in FIGS. 4A and 4B, the shape of the first metal plate 64 and the second metal plate 66 is determined by the internal pressure due to the internal pressure. Due to the deformation of the plate 64 and the second metal plate 66, there is a possibility that poor contact between the anode side electrode plate 62 or the cathode side electrode plate 63 may occur. In this case, the contact area between the first metal plate 64 or the second metal plate 66 and the anode side electrode plate 62 or the cathode side electrode plate 63 greatly depends on the occupied area of the vent holes of the second metal plate 66. The In general, the second metal plate 66 is about 1/3 to 1/2 of the first metal plate 64.

  For this reason, in 2nd Embodiment, the fuel cell unit is comprised as follows.

  FIG. 10 shows the structure of a fuel cell unit according to the second embodiment of the present invention, where (a) is a perspective view showing the second metal plate side, and (b) is the first metal plate. It is a perspective view which shows the side.

  The above-described polymer solid electrolyte membrane and the anode side electrode plate and cathode side electrode plate made of a conductive porous material are laminated and integrated. Further, when the fuel cell unit sandwiched between the first metal plate and the second metal plate is assembled, the flatness of the first metal plate and the second metal plate 5 is required.

  For example, the second metal plate (stainless steel) 151 having a thickness of 0.1 mm has a vent 153 formed by etching into a shape as shown in the figure, and the upper cover 150 is not provided with the vent 153. Combined on top of each other. By forming in this way, the flatness of the second metal plate having a depth of 0.1 mm can be ensured, and the second metal plate can be configured accurately without variation.

  A rectangular opening 153 is formed at the center of the upper cover 150. The opening 153 is an opening for sending air into the vent 153 of the second metal plate 151. A stepped portion 155 is formed in connection with the opening 152. A straight line portion where the step portion 155 and the side surface portion 159 intersect with each other has a smooth spherical shape with a radius of about 1 mm. Similarly, the straight portion where the side surface portion 156 on both sides of the stepped portion 155 intersects with the upper surface has a smooth spherical shape with a radius of about 0.5 mm.

  As described above, the first protrusion 161 and the second protrusion 162 are provided on both sides of the step 155 by forming the step 155 in the portion in front of the center. The height of the second protrusion 162 is about 0.5 mm higher than that of the first protrusion 161, which is a step. These serve as a guide surface when the fuel cell system is inserted into a battery storage chamber of a portable device (not shown), and air sucked from the battery lid is supplied from the step portion 155 and the opening 152 to the second metal plate 151. To the air vent 153.

  The surface of the opening 152 may be replaced with the surface of the opening 152 having a shape in which about 100 small holes such as a circle, a triangle, and a rectangle are dispersed, and the air may be easily deformed by sucking air from many holes. It is.

  A flat second metal plate 151 made of a stainless material having a vent 153 and the upper cover 150 made of synthetic resin are joined together by a rivet 163. Rather than mechanical bonding of the rivet 163 or the like, bonding by an adhesive may be used.

  A pair of magnetic materials (for example, stainless steel 304 material) 158 is bonded to the back surface portion 157 of the upper cover 150 with an adhesive in the longitudinal direction. Further, in the vicinity of the magnetic material 158, a positioning hole 156a that is paired with the positioning hole 156b is provided.

  On the other hand, the solid polymer electrolyte membrane, the anode side electrode plate, the cathode side electrode plate, the first metal plate, and the second metal plate have the same area, and a hydrogen flow path is provided in the first metal plate. If formed, it is also a problem to make the depth of the hydrogen flow path uniform.

  In order to solve these problems, a Ni material is laminated on a first metal plate made of a stainless material fitted to the piping path B by mechanical bonding such as hot pressing or rivets and then polymerized. Before bonding, a hydrogen flow path is formed in this Ni material by etching.

  For example, the Ni plate 142 having a thickness of 0.1 mm has a vent as formed in the shape as shown in FIG. 10B by etching, and the first metal plate 141 having only a hole in the piping path B144. Combine on top of each other. By forming in this way, the flatness of the hydrogen flow path 143 having a depth of 0.1 mm of the Ni plate 142 can be ensured and can be configured accurately without variation.

  Further, a pair of film magnet layers 146a and 146b such as a pair of permanent magnet materials in the longitudinal direction are fixed to the first metal plate 141 made of the stainless steel 140 with an adhesive. A pair of metal positioning pins 147q and 147b are erected in the vicinity of the film magnet layers 146a and 146b. The film magnet layers 146a and 146b have a high magnetic force and can be made thin if permanent magnets such as alnico magnets, ferrite magnets, and rare earth magnets (for example, SmC0) are used, but they are expensive. Accordingly, here, a ferrite bonded magnet, a plastic bonded magnet, or a rubber bonded magnet is used.

  Bond magnets are inexpensive and can be used without damage to the magnets because the bond magnets are not exposed on the outer surface. The pound magnet can be bonded to the first metal plate 141 with an epoxy resin. Moreover, it is preferable to coat the surface of the bond magnet for rust prevention or insulation. Furthermore, there is no possibility of making an operation error when assembling the bonded magnet without selecting the direction of the N pole or S pole.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention. For example, although a glass substrate and a silicon substrate which is a semiconductor substrate are joined, the glass substrate can be replaced with a semiconductor substrate, and both the semiconductor substrates can be joined.

  Further, the above-described embodiments include inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements. For example, even if some constituent requirements are deleted from all the constituent requirements shown in the embodiment, the problem described in the column of the problem to be solved by the invention can be solved, and the effect described in the column of the effect of the invention Can be extracted as an invention.

(A) is sectional drawing which shows the structure of the fuel cell system which concerns on the 1st Embodiment of this invention, (b) is the block diagram which showed the example of arrangement | positioning of the board | substrates 30a and 30b for (a). (A) is sectional drawing which shows the structural example of the fuel cell system using the metal plate 12a of stainless metal (stainless steel) instead of the 2nd glass substrate 12 and the heat insulation member 19 which are shown by FIG. 1A (a). FIG. 2B is a configuration diagram illustrating an arrangement example of the terminal substrates 30a and 30b in FIG. 1B (a). It is sectional drawing which shows the detailed structure of the part of the pressure adjustment mechanism of the fuel cell system 10 shown by FIG. 1A (a). It is the external appearance perspective view which showed the example which joined and integrated the fuel cell unit 20 and the hydrogen storage alloy container housing | casing 18. FIG. FIG. 4A is a cross-sectional view showing the structure of a fuel cell unit, FIG. 4A is a cross-sectional view in the vicinity of one end, and FIG. 4B is a cross-sectional view in the vicinity of the other end. It is a block block diagram of two types of fuel cell systems in a 1st embodiment. It is the table | surface showing the data item stored in ROM. It is a figure for demonstrating the applied voltage from the pressure sensor for a detection on a silicon substrate to a pressure regulation valve. It is a block block diagram explaining the combination of the fuel cell system, the secondary battery, and the remaining amount display of the electronic device incorporating CPU. It is the figure which showed the example of a display of the screen of the fuel cell selected by a user's specification. 2A and 2B show a structure of a fuel cell unit according to a second embodiment of the present invention, in which FIG. 1A is a perspective view showing a second metal plate side, and FIG. 2B is a perspective view showing a first metal plate side. FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Fuel cell system, 11 ... 1st glass substrate, 12 ... 2nd glass substrate, 13 ... 1st silicon substrate, 14 ... 2nd silicon substrate, 15 ... Temperature sensor, 16 ... Head amplifier chip (HA) Chip), 17 ... hydrogen storage alloy container, 18 ... hydrogen storage alloy container housing, 19 ... heat insulating member, 20 ... fuel cell unit, 21 ... piping path A, 22 ... piping path B, 24 ... hydrogen supply port, 25 ... Air suction port, 26 ... Fin, 28 ... Bonding wire, 29, 33 ... Pin terminal, 30a, 30b ... Terminal substrate, 43 ... Diaphragm, 44 ... Cavity, 47 ... Relay terminal board, 51 ... Vent, 52a -52c ... projection, 54 ... cooling fin, 55 ... air inlet, 57 ... air inlet, 58 ... hydrogen outlet, 59 ... hydrogen supply port.

Claims (10)

A fuel cell unit that generates electric power using hydrogen as a fuel, a hydrogen storage alloy container housing for supplying hydrogen to the fuel cell unit, a first connection port disposed in the hydrogen storage alloy container housing, In a fuel cell system comprising: a pressure sensor for detection formed on a silicon substrate disposed between the second connection port disposed in the fuel cell, and a pressure control valve;
A fuel cell system characterized in that the hydrogen storage alloy container casing and the fuel cell unit are coupled, and a plurality of protrusions are provided on the upper surface of the fuel cell unit.   2. The glass substrate provided with a protruding pipe path on the upper surface of the hydrogen storage alloy container housing is exposed, and the pipe path and the hydrogen inlet of the fuel cell unit are coupled to each other. Fuel cell system. Having an electrode plate between a first metal plate and a second metal plate disposed in the fuel cell unit;
The contact pressure of the electrode plate is composed of an attractive force between a permanent magnet disposed on the first metal plate and a magnetic material disposed on the second metal plate. Fuel cell system.   4. The first metal plate disposed in the fuel cell unit is provided with a plurality of positioning pins for positioning with the second metal plate. The fuel cell system described.   4. The fuel cell system according to claim 3, wherein an elastically deforming portion having a bending action is formed in the second metal plate.   The fuel cell system according to any one of claims 1 to 3, wherein a fin is formed on the outer surface of the hydrogen-occlusion alloy casing, and a vent is formed in the concave portion of the fin. A fuel cell system according to claim 1;
Further, there are provided a secondary battery, a device load section, a storage means having a pressure Kerr composition isotherm (PCT) coefficient in a plurality of temperature characteristics, the device load section, the secondary battery, and the fuel cell system. A terminal device comprising a switching switch disposed therebetween.   The terminal device according to claim 7, wherein the terminal device is a cradle device on which the device load unit is mounted. A fuel cell unit that generates electric power using hydrogen as a fuel, a hydrogen storage alloy container housing for supplying hydrogen to the fuel cell unit, a first connection port disposed in the hydrogen storage alloy container housing, A pressure sensor for detection formed on a silicon substrate disposed between the second connection port disposed in the fuel cell, a pressure control valve, the hydrogen storage alloy container housing, and the fuel cell A fuel cell unit having a plurality of protrusions formed on the upper surface of the fuel cell unit.
A secondary battery, a device load section, storage means having a pressure-curror composition isotherm (PCT) coefficient in a plurality of temperature characteristics, and between the device load section and the secondary battery and the fuel cell unit. A terminal device having a switching switch disposed;
A fuel cell system comprising:   The fuel cell system according to claim 9, wherein the terminal device is a cradle device on which the device load unit is mounted.

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