JP2005276576A - Fuel cell device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fuel cell valve driving device capable of ensuring a smooth flow of a fluid with a large valve opening area.
In a fuel cell apparatus, an assembly in which a cell stack 10, a terminal, and an insulator are fastened by end plates 20 and 30; and an opening that leads to a flow path of the cell stack, the opposite side of the opening And a valve 62 having a valve body for closing the opening of the inlet / outlet member, and a valve 62 having a valve body for closing the opening of the inlet / outlet member. A torsion bar 63 to be moved, a mechanism member 64 mechanically connected to the torsion bar, and a drive member 65 to rotate the torsion bar via the mechanism member by rotating are provided.
[Selection] Figure 1

Description

  The present invention relates to a fuel cell device having a valve that opens and closes a flow passage leading to a fuel cell, and more particularly to a valve drive device for a fuel cell that has a large valve opening area and can ensure a smooth flow of fluid.

  The power generation of the fuel cell is stopped by stopping the supply of fuel gas and air. The supply of fuel gas or air is stopped by controlling a valve provided in the flow path leading to the fuel cell. As a fuel cell system that effectively stops the power generation of the fuel cell by controlling the valve, the pressure in the combustor is temporarily increased to the primary pressure of the hydrogen separation membrane device by operating the valve, and then the pressurized high-pressure combustion Using the exhaust gas as the purge gas, purge the primary and secondary sides of the hydrogen separation membrane device, and monitor the exhaust air temperature at the exhaust air inlet of the combustor until the exhaust air temperature reaches a predetermined value or more. Some continue to supply air to the combustor. According to this, purging performed when the system is stopped can be effectively performed with a realistic configuration (see Patent Document 1).

  A first step of shutting off the external load, supplying fuel gas to the fuel electrode side, stopping the supply of air on the oxidizer electrode side that is not sealed by valve operation, and applying an internal load; There is a fuel cell stopping method in which when the voltage drops to a predetermined voltage, the supply of hydrogen is stopped by valve operation, the internal load is shut off, and the second step of sealing the oxidant electrode is performed. According to this, a decrease in catalytic ability can be prevented without causing performance deterioration of some batteries (see Patent Document 2).

JP 2002-93449 A JP-A-6-333586

  However, Patent Document 1 and Patent Document 2 do not describe anything about the type of valve or its driving method. Usually, air needs to be supplied in much larger quantities than fuel gas. In a fuel cell system equipped with a polymer electrolyte fuel cell, in order to increase the efficiency of the entire system, it is necessary to flow a large amount of air and to keep pump power as low as possible. Therefore, the flow path is designed to be as thick as possible to reduce the pressure loss. The valve disposed in such a flow path must have a large opening area and ensure a smooth flow of fluid.

  On the other hand, the valve needs a closing function to block the flow as a basic function, but these performances have advantages and disadvantages depending on the type of the valve. For example, a solenoid valve has the advantages of fast operation, excellent operating durability, and good closing performance, but it is weak in the reverse direction (when pressure is applied to push up the valve) and is kept open. In order to achieve this, there is a disadvantage in that a holding current must be kept flowing. In addition, the ball valve does not require an electric current to maintain the open state, has the advantages of a relatively large diameter and low flow resistance, but has the disadvantage that the operation is not as fast as the solenoid valve and the operation durability is poor. There is.

  A first object of the present invention is to provide a valve driving device for a fuel cell that has a large valve opening area and can ensure a smooth flow of fluid.

  A second object of the present invention is to provide a valve driving device for a fuel cell that can make use of the advantages of the valve.

  In a first aspect of the present invention, in a fuel cell device, a cell stack having a fluid flow path, a pair of terminals arranged in a stacking direction at both ends of the cell stack, and an outer side of the terminal A pair of insulators, an opening that communicates with the flow path, a pair of end plates that are sandwiched and fastened from the outside of the terminal while being insulated from the terminal, and that communicates with the flow path And a conduit member inserted through the opening, a flow path leading to the conduit member, and an opening mechanically connected to the conduit member from the outside of the end plate, opposite to the opening A valve having a valve body for closing the opening of the conduit member, and an inlet / outlet member having a through-hole, a rod portion for inserting the through-hole, A torsion bar that mechanically connects with the head part and moves the valve in the axial direction of the rod part by rotating, a mechanism member mechanically connected to the torsion bar, and the mechanism member And a drive member that mechanically connects and rotates the torsion bar by rotating through the mechanism member.

  In a second aspect of the present invention, in the fuel cell device, a cell stack having a fluid flow passage, a pair of terminals arranged in the stacking direction at both ends of the cell stack, and the outside of the terminal A pair of insulators arranged, an opening communicating with the flow passage, a pair of end plates fastened by being sandwiched from the outside of the insulator, and communicating with the flow passage and being inserted through the opening An inlet / outlet member having a conduit member and a flow path leading to the conduit member, having an opening mechanically connected to the conduit member from the outside of the end plate, and having a through hole on the opposite side of the opening And a valve having a rod portion for inserting the through hole and a valve body for closing the opening of the inlet / outlet member, and mechanically connected to the rod portion. And a torsion bar that moves the valve in the axial direction of the rod portion by rotating, a mechanism member mechanically connected to the torsion bar, and mechanically connected to the mechanism member and rotated. And a drive member for rotating the torsion bar via the mechanism member.

  In a third aspect of the present invention, in the fuel cell device, a cell stack having a fluid flow path, a pair of terminals arranged in the stacking direction at both ends of the cell stack, and outside the terminal A pair of insulators arranged, an opening communicating with the flow passage, a pair of end plates fastened by being sandwiched from the outside of the insulator, and communicating with the flow passage and being inserted through the opening An inlet / outlet member having a conduit member and a flow path leading to the conduit member, having an opening mechanically connected to the conduit member from the outside of the end plate, and having a through hole on the opposite side of the opening And a valve having a rod portion for inserting the through hole and a valve body for closing the opening of the inlet / outlet member, and mechanically connected to the rod portion. And a torsion bar that moves the valve in the axial direction of the rod portion by rotating, a mechanical member mechanically connected to the torsion bar, mechanically connected to the mechanical member, and slid A drive member for rotating the torsion bar via the mechanism member, and a spring mechanically connected to the torsion bar and assisting the rotation of the torsion bar at least when the drive member is not driven And.

  According to the present invention (Claims 1 to 3), since a valve having a large opening area can be employed, a smooth fluid flow can be ensured.

  According to the present invention (Claim 3), it is not necessary to supply power to the drive member after pushing or pulling back with the assistance of the spring, so that the advantages of the drive member (solenoid) can be utilized.

  A fuel cell device according to Embodiment 1 of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view schematically showing a configuration of a fuel cell device according to Embodiment 1 of the present invention. FIG. 2 is a partial cross-sectional view schematically showing the configuration of the valve portion of the fuel cell device according to Embodiment 1 of the present invention. FIG. 3 is a partial cross-sectional view schematically showing a modification of the configuration of the valve portion of the fuel cell device according to Embodiment 1 of the present invention.

  The fuel cell device 1 is a device having a solid polymer electrolyte fuel cell, and is mounted on, for example, a fuel cell vehicle. However, it may be used other than an automobile.

  The fuel cell device 1 includes a cell stack 10, a cover plate 12, a terminal 13, an insulator 14, a first end plate 20, a second end plate 30, a pressure plate 40, and a tension plate 50. , A bolt 51, a conduit member 60, an inlet / outlet member 61, a valve 62, a torsion bar 63, a mechanism member 64, and a drive member 65 (see FIGS. 1 and 2).

  The cell stack 10 has separators (not shown) at both ends of a membrane-electrode assembly (not shown) in which electrodes (fuel electrode, air electrode; not shown) are arranged on both surfaces of an electrolyte membrane (not shown). Is formed of a stacked body of cells 11 (see FIG. 1). The cell 11 has a flow groove (not shown) for supplying a fluid to the electrode, and has a flow passage (flow passage 10a of the cell stack) that leads from the flow groove to the outside (see FIG. 2). A cover plate 12, a terminal 13, and an insulator 14 are stacked in order from the side closer to the cell stack 10 at both ends in the stacking direction of the cell stack 10. 2 shows a laminated structure of the cover plate 12, the terminal 13, and the insulator 14 only on the first end plate 20 side, the same applies to the second end plate 30 side.

  The cover plate 12 is a conductive member for lowering the contact resistance between the cell stack 10 and the terminal 13, and has an opening 12 a at a position corresponding to the flow path 10 a of the cell stack 10. The terminal 13 is a metal fitting or terminal for taking out electric power from the cell stack 10, and has a terminal portion 13a for inserting the hole 50a of the tension plate 50. The terminal 13 on the first end plate 20 side has a conduit member. A housing portion (not shown) for housing 60 is provided. The insulator 14 is an insulator that insulates between the terminal 13 and the first end plate 20. The insulator 14 on the first end plate 20 side accommodates a housing portion (not shown) for housing the conduit member 60. ).

  The first end plate 20 is a plate arranged at a distance from the pressure plate 40, and applies a pressing pressure of an elastic member (not shown) disposed between the first end plate 20 and the pressure plate 40. receive. A side end of the first end plate 20 has a plurality of holes (not shown) that are screwed into the bolts 51. The first end plate 20 has an opening (not shown) through which the conduit member 60 is inserted. The first end plate 20 has a support portion 20a that rotatably supports the shaft portion 63b of the torsion bar 63 at a predetermined position, and the support portion 20b that rotatably supports the screw 64a at a predetermined position. And a support portion 20c that is supported by the driving member 65 at a predetermined position.

  The second end plate 30 is a plate that receives a pressing pressure from the cell laminate 10 side, and is in contact with an insulator (corresponding to the insulator 14). The side end of the second end plate 30 has a plurality of holes (not shown) that are screwed into the bolts 51.

  The pressure plate 40 pushes the cell stack 10 to the second end by pressing an elastic member (for example, a compression coil spring, a disc spring, etc .; not shown) disposed between the first end plate 20 and the pressure plate 40. It is a plate pressed against the plate 30 side.

  The tension plate 50 is a flat plate for fastening the first end plate 20 and the second end plate 30. The tension plate 50 is arranged in the stacking direction outside the cell stack 10, and is first bolted 51. A plurality of holes (not shown) for fastening to side ends of the end plate 20 and the second end plate 30 are provided.

  The bolt 51 is an attachment member for attaching the tension plate 50 to the first end plate 20 and the second end plate 30. The bolt 51 passes through a hole (not shown) of the tension plate 50 and is attached to the first end plate 20. And the second end plate 30 at the side end holes (not shown).

  The conduit member 60 is a tubular member that communicates with the flow passage 10a of the cell stack 10 from the outside, and is inserted through an opening (not shown) of the first end plate 20 to accommodate the terminal 13 and the accommodating portion of the insulator 14 (see FIG. (Not shown). The conduit member 60 has a seal member 60 a that is in contact with the cover plate 12 and is in contact with the periphery of the opening of the cover plate 12. The conduit member 60 has a leading end protruding from an opening (not shown) of the first end plate 20, and a sealing member 60 b for sealing between the opening 61 a of the entrance / exit member 61 in the vicinity of the leading end. (See FIG. 2).

  The inlet / outlet member 61 is a cylindrical member through which an inflow fluid (fuel gas, air) or an outflow fluid (fuel gas) flows (see FIG. 1). The entrance / exit member 61 is not only applied to the entrance side and the exit side, but may be applied only to the entrance side or only to the exit side. In FIG. 1, an air inlet / outlet member 61 is shown, with the upper stage being an air supply port and the lower stage being an air exhaust port. In FIG. 1, the fuel gas inlet / outlet member 61 is omitted, but the second end plate 30 may have the same configuration as the air inlet / outlet member 61. One end of the inlet / outlet member 61 has an opening 61a for connecting to the conduit member 60 as a flow path, and the other end has a hole (not shown) for fluid inflow or outflow. A portion facing the opening 61a has a through hole 61b for the rod portion 62a of the valve 62 to slide, and a seal member 61c for sealing between the through hole 61b and the rod portion 62a. In FIG. 2, an O-ring is used for the seal member 61c, but a bellows (61c in FIG. 3) can also be used. The O-ring is low in cost, but has a drawback of stick-slip and the valve 62 does not move smoothly. The bellows (61c in FIG. 3) is expensive, but it moves smoothly and has high reliability. The joining of the bellows (61c in FIG. 3) with the valve 62 and the inlet / outlet member 61 is achieved by adhesion, pressure bonding or the like. When the pressure difference between the inside and the outside is large, the bellows material may be resin or metal instead of ordinary rubber. The entrance / exit member 61 has a support portion 61d that rotatably supports the shaft portion 63b of the torsion bar 63 at a predetermined position.

  The valve 62 is a valve body that closes the opening 61a (or the opening of the conduit member 60) and stops the supply of fuel gas and air. The valve 62 may be a poppet valve that moves in a direction perpendicular to the opening surface of the conduit member 60. The valve 62 has a rod portion 62 a that slides through the through hole 61 b of the inlet / outlet member 61, and a valve body 62 b that closes the opening 61 a (or the opening portion of the conduit member 60). The rod portion 62a and the valve body 62b are integrally formed. In the vicinity of the tip of the rod portion 62a, there is a connection portion 62c that is mechanically connected to the torsion bar 63. The valve body 62b has a seal portion 62d that comes into contact with the opening 61a (or the opening portion of the conduit member 60) when the conduit member 60 is closed.

  The torsion bar 63 is a member for sliding the valve 62, has a pair of peristaltic portions 63 a that swing by rotation, has a pair of shaft portions 63 b that serve as pivot shafts, and has a mechanism member 64. A crank portion 63c that rotates the entire torsion bar 63 by operation is provided. In FIG. 1, the two valves 62 are driven by one torsion bar 63, but a configuration in which three or more valves are driven may be employed. The tip of the swinging part 63a is mechanically connected to the connecting part 62c of the valve 62. The shaft portion 63b is rotatably supported by the support portion 20a of the first end plate 20 and the support portion 61d of the entrance / exit member 61. The crank portion 63c has a crank shape protruding at a predetermined angle (excluding 0 degrees and 180 degrees) with respect to the direction in which the swinging portion 63a extends, and is rotatably connected to the nut member 64b.

  The mechanism member 64 is a mechanism member for rotating the torsion bar 63. The mechanism member 64 employs a mechanism that does not reverse such as a screw-nut and a worm-worm foil, and has a screw 64a and a nut member 64b in FIG. The screw 64a is rotated by the rotation of the driving member 65, and the tip end portion is rotatably supported by the support portion 20b. The nut member 64b is screwed with the screw 64a, and the position of the nut member 64b moves in the axial direction of the screw 64a by the rotation of the screw 64a, and is mechanically connected to the crank portion 63c of the torsion bar 63.

  The drive member 65 is an electric motor with a speed reducer that rotates the screw 64a, and a motor drive shaft (not shown) and the screw 64a are connected to each other. The drive member 65 is supported by the support portion 20c.

  Next, the opening / closing operation of the valve of the fuel cell device according to Embodiment 1 will be described. Referring to FIG. 1, when the driving member 65 rotates in the first direction, the screw 64a rotates accordingly, and the nut member 64b slides away from the driving member 65. Accordingly, the torsion bar 63 swings. When the part 63a rotates in the direction of pulling up the rod part 62a of the valve 62, the valve 62 is opened, and the fluid can flow. On the other hand, when the driving member 65 rotates in the second direction opposite to the first direction, the screw 64a rotates accordingly, and the nut member 64b slides in a direction approaching the driving member 65, and accordingly, the torsion is performed. When the swinging portion 63a of the bar 63 rotates in a direction to push down the rod portion 62a of the valve 62, the valve 62 and the opening portion 61a (or the opening portion of the conduit member 60) come into contact with each other. It becomes a state where it cannot circulate. When the valve 62 is in the closed state, the torsion bar 63 is pressed against the valve 62 with a torque generated by twisting as much as necessary from the position where the valve 62 and the opening 61a (or the opening of the conduit member 60) are in contact with each other. . The pressing force can be freely set by a stroke from the position where the valve 62 contacts.

  According to the above configuration, since a valve having a large opening area can be employed, a smooth fluid flow can be ensured.

  A fuel cell device according to Embodiment 2 of the present invention will be described with reference to the drawings. FIG. 4 is a perspective view schematically showing a valve opening / closing mechanism used in the fuel cell apparatus according to Embodiment 2 of the present invention.

  The fuel cell device according to the second embodiment is different from the fuel cell device according to the first embodiment in the configuration of the torsion bar, the mechanism member, and the drive member, and has a spring. The configuration other than the torsion bar, the mechanism member, and the drive member is the same as that of the fuel cell device according to Embodiment 1.

  The torsion bar 73 is a member for sliding a valve (corresponding to 62 in FIG. 1), has a pair of peristaltic portions 73a that swing by rotation, and has a pair of shaft portions 73b that serve as pivot shafts. A crank portion 73c that rotates the entire torsion bar 73 by the force of the spring 76, and a rotation portion 73d that rotates the entire torsion bar 73 by the operation of the mechanism member 74. In FIG. 4, two valves are driven by one torsion bar 73, but a configuration in which three or more valves are driven may be employed. The tip of the swinging portion 73a is mechanically connected to a valve connecting portion (corresponding to 62c in FIG. 2). The shaft portion 73b is rotatably supported by a support portion 20a provided on a first end plate (corresponding to 20 in FIG. 1) and a support portion 61d provided on an entrance / exit member. The crank portion 73 c has a crank shape protruding in the direction opposite to the direction in which the swinging portion 73 a extends, and is mechanically connected to the spring 76. The rotating part 73d is mechanically connected to the mechanism member 74 at the tip part.

  The mechanism member 74 is an arm-shaped mechanism member for rotating the torsion bar 73. One end of the mechanism member 74 is foldably connected to the tip end of the rotating portion 73d of the torsion bar 73, and the other end of the mechanism member 74 is foldably connected to the drive shaft 75a of the drive member 75.

  The drive member 75 is a solenoid that moves the drive shaft 75a in the axial direction by the attractive force of the electromagnet. The tip of the drive shaft 75 is connected to the other end of the mechanism member 74 so as to be bent. The drive member 75 is supported by a support portion (corresponding to 20c in FIG. 1) provided on the first end plate.

  The spring 76 is a tension coil spring that assists the rotation of the torsion bar 73. One end of the spring 76 is mechanically connected (hooked) to the crank portion 73c of the torsion bar 73, and the other end of the spring 76 is provided on a first end plate (corresponding to 20 in FIG. 1). It is mechanically connected (hanged) to the support portion 20d. The spring 76 is fully extended when the spring 76 and the crank portion 73c are parallel to each other, and the swinging portion 73a is a first end plate (corresponding to 20 in FIG. 1) from the line connecting the crank portion 73c and the support portion 20d. Shrinks when pivoted to the side and the opposite side. The valve (62 in FIG. 2) is moved by the contraction action of the spring 76 when the swinging portion 73a rotates toward the first end plate (corresponding to 20 in FIG. 1) from the line connecting the crank portion 73c and the support portion 20d. The opening part of the conduit member (60 in FIG. 2) is pressed to be closed. On the other hand, due to the contraction of the spring 76 when the swinging portion 73a rotates in the direction opposite to the first end plate (corresponding to 20 in FIG. 1) from the line connecting the crank portion 73c and the support portion 20d, the valve (FIG. 2 of 62) opens away from the opening of the conduit member (60 of FIG. 2). Thereby, it is stable in either the open state or the closed state.

  Next, the opening / closing operation of the valve of the fuel cell device according to Embodiment 2 will be described.

  Referring to FIG. 4, the peristaltic part 73a rotates toward the first end plate (corresponding to 20 in FIG. 1) from the line connecting the crank part 73c and the support part 20d, and the valve (FIG. 2) 62) presses the opening of the conduit member (60 in FIG. 2) and is in the closed state, the drive member 75 pushes out the drive shaft 75a, thereby pushing out the mechanism member 74 and pushing out the mechanism member 74. As a result, the swinging portion 73a rotates in the direction opposite to the first end plate (corresponding to 20 in FIG. 1), and accordingly the swinging portion 73a of the torsion bar 73 corresponds to the rod portion of the valve (corresponding to 61a in FIG. 2). ) In the direction of pulling up, the valve is opened, and the fluid can flow. Here, the drive shaft 75a is pushed out before and after the spring 76 and the crank portion 73c are parallel to each other. After the drive shaft 75a is pushed out, the rotation of the torsion bar 73 is assisted by the contraction action of the spring 76. Therefore, it is not necessary to supply power to the drive member 75.

  On the other hand, the swinging portion 73a rotates to the side opposite to the first end plate (corresponding to 20 in FIG. 1) from the line connecting the crank portion 73c and the support portion 20d, and the valve (FIG. 62) is in the open state away from the opening of the conduit member (60 in FIG. 2), the drive member 75 pulls back the drive shaft 75a, the mechanism member 74 is pulled back, and the mechanism member 74 is pulled back. The swinging portion 73a rotates toward the first end plate (corresponding to 20 in FIG. 1), and accordingly, the swinging portion 73a of the torsion bar 73 pushes down the rod portion of the valve (corresponding to 61a in FIG. 2). By rotating, the valve is closed and the fluid can flow. Here, the drive shaft 75a is pulled back before and after the spring 76 and the crank portion 73c are parallel to each other. After the drive shaft 75a is pulled back, the rotation of the torsion bar 73 is assisted by the contraction action of the spring 76. Therefore, it is not necessary to supply power to the drive member 75.

  According to the configuration as described above, it is not necessary to supply power to the drive member 75 after the drive shaft 75a is pushed or pulled back with the assistance of the spring 76, so that the advantages of the drive member 75 (solenoid) can be utilized. Can be.

It is the perspective view which showed typically the structure of the fuel cell apparatus which concerns on Embodiment 1 of this invention. It is the fragmentary sectional view which showed typically the structure of the valve | bulb part of the fuel cell apparatus which concerns on Embodiment 1 of this invention. FIG. 6 is a partial cross-sectional view schematically showing a modification of the configuration of the valve portion of the fuel cell device according to Embodiment 1 of the present invention. It is the perspective view which showed typically the valve opening / closing mechanism used in the fuel cell apparatus which concerns on Embodiment 2 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fuel cell apparatus 10 Cell laminated body 10a Flow path 11 Cell 12 Cover plate 12a Opening part 13 Terminal 13a Terminal part 14 Insulator 20 1st end plate 20a, 20b, 20c, 20d Support part 30 2nd end plate 40 Pressure plate 50 Tension plate 50a Hole 51 Bolt 60 Conduit member 60a, 60b Seal member 61 Entrance / exit member 61a Opening 61b Through hole 61c Seal member 61d Support part 62 Valve 62a Rod part 62b Valve element 62c Connection part 62d Seal part 63, 73 Torsion bar 63a 73a Swing part 63b, 73b Shaft part 63c, 73c Crank part 64, 74 Mechanism member 64a Screw 64b Nut member 65, 75 Drive member 73d Rotating part 75a Drive shaft 76 Ring

Claims (3)

A cell stack having a fluid flow path;
A pair of terminals arranged in the stacking direction at both ends of the cell stack;
A pair of insulators arranged outside the terminal;
A pair of end plates that have an opening that leads to the flow passage and are clamped in a state of being insulated from the terminal from the outside of the terminal;
A conduit member that communicates with the flow passage and is inserted through the opening;
An inlet / outlet member having a flow path leading to the conduit member, having an opening mechanically connected to the conduit member from the outside of the end plate, and having a through hole on the opposite side of the opening;
A valve having a rod part for inserting the through hole, and a valve body for closing the opening of the conduit member;
A torsion bar that mechanically connects with the rod part and moves the valve in the axial direction of the rod part by rotating;
A mechanical member mechanically connected to the torsion bar;
A drive member that mechanically connects with the mechanism member and rotates the torsion bar via the mechanism member by rotating;
A fuel cell device comprising: A cell stack having a fluid flow path;
A pair of terminals arranged in the stacking direction at both ends of the cell stack;
A pair of insulators arranged outside the terminal;
A pair of end plates that have an opening that leads to the flow passage and are clamped in a state of being insulated from the terminal from the outside of the terminal;
A conduit member that communicates with the flow passage and is inserted through the opening;
An inlet / outlet member having a flow path leading to the conduit member, having an opening mechanically connected to the conduit member from the outside of the end plate, and having a through hole on the opposite side of the opening;
A valve having a rod part for inserting the through hole, and a valve body for closing the opening of the inlet / outlet member;
A torsion bar that mechanically connects with the rod part and moves the valve in the axial direction of the rod part by rotating;
A mechanical member mechanically connected to the torsion bar;
A drive member that mechanically connects with the mechanism member and rotates the torsion bar via the mechanism member by rotating;
A fuel cell device comprising: A cell stack having a fluid flow path;
A pair of terminals arranged in the stacking direction at both ends of the cell stack;
A pair of insulators arranged outside the terminal;
A pair of end plates that have an opening that leads to the flow passage and are clamped in a state of being insulated from the terminal from the outside of the terminal;
A conduit member that communicates with the flow passage and is inserted through the opening;
An inlet / outlet member having a flow path leading to the conduit member, having an opening mechanically connected to the conduit member from the outside of the end plate, and having a through hole on the opposite side of the opening;
A valve having a rod part for inserting the through hole, and a valve body for closing the opening of the inlet / outlet member;
A torsion bar that mechanically connects with the rod part and moves the valve in the axial direction of the rod part by rotating;
A mechanical member mechanically connected to the torsion bar;
A drive member that mechanically connects to the mechanism member and rotates the torsion bar via the mechanism member by sliding;
A spring mechanically connected to the torsion bar and assisting the rotation of the torsion bar at least when the drive member is not driven;
A fuel cell device comprising:

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