# US 12,119,177 B2 · Capacitor with seat plate

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- Number: US 12,119,177 B2
- Document ID: US12119177B2
- Status: Granted
- Kind: B2
- Application number: 17/649,799
- Filed: 2022-02-03
- Published: 2022-05-19
- Granted: 2024-10-15
- Earliest claimed: 2019-08-30
- Assignees: Panasonic Intellectual Property Management Co., Ltd.
- Applicants: Panasonic Intellectual Property Management Co., Ltd.
- Inventors: Hisao Nagara
- Web page: https://patentgrep.com/patent/US12119177B2

## CPC

- H01G 2/02: Mountings
- H01G 2/106: {Fixing the capacitor in a housing}
- H01G 9/0003: {Protection against electric or thermal overload; cooling arrangements; means for avoiding the formation of cathode films (H01G9/12 takes precedence)}
- H01G 9/012: specially adapted for solid capacitors
- H01G 9/10: Sealing, e.g. of lead-in wires
- H01G 2/103: {Sealings, e.g. for lead-in wires; Covers}
- H01G 9/145: Liquid electrolytic capacitors (H01G11/00 takes precedence)
- H01G 9/15: Solid electrolytic capacitors (H01G11/00 takes precedence)
- H01G: CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE (selection of specified materials as dielectric H01B3/00; capacitors having potential barriers H10D1/62, H10K10/10)

## Abstract

A capacitor with a seat plate includes a capacitor main body and a seat plate that holds the capacitor main body. The capacitor main body includes a capacitor element, a case having an opening for housing the capacitor element, a sealing member that closes the opening of the case, and a plurality of lead terminals each penetrating the sealing member and the seat plate. The seat plate includes a heat dissipation member, and has a first surface and a second surface opposite to the first surface. The heat dissipation member is exposed at the first surface and the second surface. The capacitor element is disposed at a side close to the second surface of the seat plate. The case is in contact with a region of the heat dissipation member. The region of the heat dissipation member is exposed at the second surface.

## Claims

### Claim 1

A capacitor with a seat plate, the capacitor comprising:
a capacitor main body; and
the seat plate that holds the capacitor main body, wherein:
the capacitor main body includes:
a capacitor element,
a case having an opening for housing the capacitor element,
a sealing member that closes the opening of the case, and
a plurality of lead terminals each penetrating the sealing member and the seat plate,
the seat plate includes a heat dissipation member, the seat plate including a base part and a support wall that extends from the base part along a peripheral surface of the case, the base part having a first surface and a second surface opposite to the first surface,
the capacitor element is disposed at a side close to the second surface of the seat plate,
a part of the heat dissipation member is disposed in the support wall and is in contact with the case, and
the heat dissipation member is exposed at the first surface of the base part.

### Claim 2 (depends on 1)

The capacitor with a seat plate according to claim 1, wherein:
the plurality of lead terminals include a cathode lead terminal, and
the cathode lead terminal is in contact with the heat dissipation member.

### Claim 3 (depends on 2)

The capacitor with a seat plate according to claim 2, wherein a thermal conductivity of the heat dissipation member is higher than a thermal conductivity of the cathode lead terminal.

### Claim 4 (depends on 1)

The capacitor with a seat plate according to claim 1, wherein the capacitor element includes:
an anode body including a dielectric layer,
a cathode body, and
a solid electrolyte disposed between the anode body and the cathode body.

### Claim 5 (depends on 1)

The capacitor with a seat plate according to claim 1, wherein the capacitor element further includes an electrolytic solution.

### Claim 6

A capacitor with a seat plate, the capacitor comprising:
a capacitor main body; and
the seat plate that holds the capacitor main body, wherein:
the capacitor main body includes:
a capacitor element,
a case having an opening for housing the capacitor element,
a sealing member that closes the opening of the case, and
a plurality of lead terminals each penetrating the sealing member and the seat plate,
the seat plate includes a heat dissipation member, the seat plate having a first surface and a second surface opposite to the first surface,
the heat dissipation member is exposed at the first surface and the second surface,
the capacitor element is disposed at a side close to the second surface of the seat plate,
the case is in contact with a region of the heat dissipation member, the region of the heat dissipation member being exposed at the second surface,
the plurality of lead terminals include a cathode lead terminal, and
the cathode lead terminal is in contact with the heat dissipation member.

### Claim 7 (depends on 6)

The capacitor with a seat plate according to claim 6, wherein a thermal conductivity of the heat dissipation member is higher than a thermal conductivity of the cathode lead terminal.

### Claim 8 (depends on 6)

The capacitor with a seat plate according to claim 6, wherein the capacitor element includes:
an anode body including a dielectric layer,
a cathode body, and
a solid electrolyte disposed between the anode body and the cathode body.

### Claim 9 (depends on 6)

The capacitor with a seat plate according to claim 6, wherein the capacitor element further includes an electrolytic solution.