Disclosed here is a capacitive deionization device for removing ions from a target solution. The capacitive deionization device includes a first porous electrode, a second porous electrode, a first header plate, a second header plate, and a sealant. The second porous electrode is disposed below and spaced from the first porous electrode. The first header plate is disposed on the first porous electrode. The first header plate defines an input flow channel that is in fluidic communication with the first porous electrode. The second header plate is disposed below the second porous electrode. The second header plate defines an output flow channel that is in fluidic communication with the second porous electrode. The sealant is disposed between the first header plate and the second header plate and surrounds the first porous electrode and the second porous electrode.

A seal plate (2) seals an opening part of a capacitor case (an exterior case 52) and includes a main body part (4) including a through-hole (8) for discharging a gas (G) in the capacitor case, a pressure valve (12) arranged to cover the through-hole and including a valve body part (26) allowing passage of the gas, a storage part (16) formed in the through-hole to receive the valve body part expanded due to a pressure in the capacitor case, and a stopper (stopper wall 10) that includes an opening part (20) for discharging the gas passing through the valve body part and that comes into contact with a portion of the valve body part in the storage part to deform the valve body part. This achieves an increase in gas permeability of the pressure valve and a high operating pressure maintained in the pressure valve.

A seal plate (2) seals an opening part of a capacitor case (an exterior case 52) and includes a main body part (4) including a through-hole (8) for discharging a gas (G) in the capacitor case, a pressure valve (12) arranged to cover the through-hole and including a valve body part (26) allowing passage of the gas, a storage part (16) formed in the through-hole to receive the valve body part expanded due to a pressure in the capacitor case, and a stopper (stopper wall 10) that includes an opening part (20) for discharging the gas passing through the valve body part and that comes into contact with a portion of the valve body part in the storage part to deform the valve body part. This achieves an increase in gas permeability of the pressure valve and a high operating pressure maintained in the pressure valve.

A valve structural body that is easy to attach to a container is for a power storage device, and includes a casing in which a passage through which gas generated inside of the container is discharged to the outside of the container is formed, and a valve mechanism that is accommodated in the casing and allows the gas to pass through the passage to the outside of the container via the passage if the internal pressure of the container has risen due to the gas generated inside of the container. The casing includes a first plane, and a second plane that is parallel to the first plane.

A solid electrolytic capacitor is provided that includes a capacitor element having a valve action metal base with a porous portion on a first main surface of a core portion, a dielectric layer disposed on a surface of the porous portion, a solid electrolyte layer disposed on the dielectric layer, and a conductor layer disposed on the solid electrolyte layer. Moreover, the capacitor includes a sealing layer that seals a first main surface of the capacitor element, a cathode outer electrode electrically connected to the conductor layer, and an anode outer electrode electrically connected to the valve action metal base. The sealing layer and the cathode outer electrode are disposed on the conductor layer and a cathode through-electrode extends through the sealing layer on the conductor layer. The conductor layer and the cathode outer electrode are connected to each other with the cathode through-electrode interposed therebetween.

A solid electrolytic capacitor is provided that includes a capacitor element having a valve action metal base with a porous portion on a first main surface of a core portion, a dielectric layer disposed on a surface of the porous portion, a solid electrolyte layer disposed on the dielectric layer, and a conductor layer disposed on the solid electrolyte layer. Moreover, the capacitor includes a sealing layer that seals a first main surface of the capacitor element, a cathode outer electrode electrically connected to the conductor layer, and an anode outer electrode electrically connected to the valve action metal base. The sealing layer and the cathode outer electrode are disposed on the conductor layer and a cathode through-electrode extends through the sealing layer on the conductor layer. The conductor layer and the cathode outer electrode are connected to each other with the cathode through-electrode interposed therebetween.

An electronic control device includes: a circuit board to which electronic components are mounted; an electrolytic capacitor that is mounted to the circuit board, and includes a bottom facing the circuit board, and includes a pressure reduction mechanism disposed in the bottom and structured to release internal pressure of the electrolytic capacitor; and a housing containing the circuit board. The housing includes a pocket that opens at a position to face the electrolytic capacitor mounted to the circuit board and contains the electrolytic capacitor. The pocket includes in its inner periphery a bottom wall surface and a side wall surface that surround the electrolytic capacitor. The electrolytic capacitor is covered by heat dissipation material filling a space between the pocket and a part of the electrolytic capacitor wherein the part faces the bottom wall surface and the side wall surface of the pocket.

An electronic control device includes: a circuit board to which electronic components are mounted; an electrolytic capacitor that is mounted to the circuit board, and includes a bottom facing the circuit board, and includes a pressure reduction mechanism disposed in the bottom and structured to release internal pressure of the electrolytic capacitor; and a housing containing the circuit board. The housing includes a pocket that opens at a position to face the electrolytic capacitor mounted to the circuit board and contains the electrolytic capacitor. The pocket includes in its inner periphery a bottom wall surface and a side wall surface that surround the electrolytic capacitor. The electrolytic capacitor is covered by heat dissipation material filling a space between the pocket and a part of the electrolytic capacitor wherein the part faces the bottom wall surface and the side wall surface of the pocket.

A mounting structure for mounting an electrolytic capacitor on a printed circuit board (PCB) of an airbag electronic control unit (ECU) includes a cap for receiving a lead end of the capacitor. The cap includes openings for receiving electrical leads of the capacitor. The cap supports electrical connectors, which electrically contact the electrical leads when a lead end of the capacitor is installed in the cap. The electrical connectors include portions for interfacing with the PCB to electrically connect the electrical connectors to the PCB. The cap also includes a vent that provides fluid communication from inside the cap to outside the cap. The vent is configured to vent dielectric liquids and gases discharged from the lead end of the capacitor during thermal cycles and/or charging cycles of the capacitor.

A mounting structure for mounting an electrolytic capacitor on a printed circuit board (PCB) of an airbag electronic control unit (ECU) includes a cap for receiving a lead end of the capacitor. The cap includes openings for receiving electrical leads of the capacitor. The cap supports electrical connectors, which electrically contact the electrical leads when a lead end of the capacitor is installed in the cap. The electrical connectors include portions for interfacing with the PCB to electrically connect the electrical connectors to the PCB. The cap also includes a vent that provides fluid communication from inside the cap to outside the cap. The vent is configured to vent dielectric liquids and gases discharged from the lead end of the capacitor during thermal cycles and/or charging cycles of the capacitor.