Panasonic Corporation

Panasonic Intellectual Property Management Co., Ltd.

Yoshinari Nagata

Takeshi Imamura

Toshiharu Saito

Toshihisa Miura

Hiroki Takeoka

Masahito Sano

Tetsuo Tanaka

Satoshi Hosokawa

Kazuo Ogawa

A metallized film capacitor includes a dielectric film, a first metal film electrode disposed on a surface of the dielectric film, and a second metal film electrode facing the first metal film electrode across the dielectric film. The first metal film electrode includes first and second large electrode parts separated from each other by a first slit, and a fuse provided in the first slit and connected to the first and second large electrode parts. The first metal film electrode includes an aluminum part and an aluminum-zinc part. The aluminum part contains substantially only aluminum. The aluminum-zinc part mainly contains zinc and further contains aluminum. The aluminum-zinc part is disposed at least around the first fuse.

Metallized film capacitor

A case mold type capacitor is formed of multiple metalized film capacitors connected together in parallel and rigidly accommodated with molding resin within a case. The multiple metalized film capacitors are divided into a first block and a second block, and P-poles of each block confront each other, and N-poles thereof also confront each other. Bus-bars including a connection terminal for external connection at an end are connected to respective P-poles and N-poles of each block. The bus-bars connected to the P-poles are coupled together, and the bus-bars connected to the N-poles are coupled together. Each one of the bus-bars includes a section located on the opening side of the case with respect to the blocks. The bus-bars connected to the P-poles overlap in part, and the bus-bars connected to the N-poles also overlap in part.

Case mold type capacitor

A metalized film capacitor capable of exhibiting stable performance in a wide temperature range is provided. The metalized film capacitor has an elliptical cross sectional shape having a major axis of 60 mm or above. In this capacitor, offset for shifting in the width direction of a pair of metalized film is set to 1.2 mm or above. Since the bonding state between metal vapor-deposited electrode and metal sprayed electrode formed on the end surface is stable, a stable contact between metal sprayed electrode and dielectric film is maintained, thereby preferably maintaining tan &#x3c3;and exhibiting excellent performance even if the use temperature range is increased and the thermal stress is increased.

Metalized film capacitor, case mold type capacitor using the same, inverter circuit, and vehicle drive motor drive circuit

A case molded capacitor has a metallized film capacitor, a pair of bus bars, a resin-made internal case, molding resin, a metal external case, and a buffer material layer. The bus bars are each connected to respective one of electrodes of the metallized film capacitor. The internal case contains the metallized film capacitor. The metallized film capacitor is submerged with molding resin in the internal case so as to expose parts of the bus bars. The external case contains the internal case and both cases are connected at a connecting part. A buffer material layer is put in a gap made at least at a part between the internal case and the external case.

Growing community of inventors

Toyama, Japan

Yoshinari Nagata