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Capacitor module

A capacitor and film capacitor technology, applied in capacitors, fixed capacitors, multiple fixed capacitors, etc., can solve the problems of reducing heat generation and small inductance of capacitors, and achieve the effect of reducing inductance

Inactive Publication Date: 2014-03-26
TOYOTA JIDOSHA KK +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In addition to reducing heat generation, there is also the issue of desiring the inductance of the capacitor to be small

Method used

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Examples

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Embodiment Construction

[0019] A capacitor module according to various embodiments of the present invention will be described with reference to the accompanying drawings. figure 1 is an exploded perspective view showing the capacitor module 2 . The capacitor module 2 is a device configured by connecting two capacitors (film capacitors) 3 a and 3 b in parallel to each other. The capacitor module 2 is connected in parallel to, for example, an input side of an inverter in a circuit of a motor drive system of an electric vehicle, and smoothes current. Since a circuit of an electric vehicle handles a large current, a smoothing capacitor also needs to have a large capacity. The capacitor module 2 is configured by connecting a plurality of capacitors 3a and 3b to each other in parallel, and realizes a large capacity.

[0020] figure 2 is a side view showing the capacitor module 2 . image 3 is a plan view showing the capacitor module 2 . By the way, image 3 is a plan view of the capacitor module 2 w...

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Abstract

Disclosed is a capacitor module. The capacitor module (2) includes a first film capacitor (3a), a second film capacitor (3b), and a bus bar (6,7). The first film capacitor (3a) has electrodes at both ends thereof. The second film capacitor has electrodes at both ends thereof. A lateral face of the second film capacitor is provided adjacent to a lateral face of the first film capacitor. The bus bar electrically connects the first film capacitor and the second film capacitor to an external device. The bus bar is connected to the electrodes on one end side of the first film capacitor and the second film capacitor. The bus bar is extended to the other end side through a gap between the first film capacitor and the second film capacitor.

Description

technical field [0001] The invention relates to a capacitor module comprising a plurality of film capacitors. Background technique [0002] In the case where a large-capacity capacitor is required, a large capacity can be achieved by connecting multiple capacitors in parallel with each other. In this specification, a unit configured by connecting a plurality of capacitors in parallel to each other is called a capacitor module. For example, a capacitor used in an electric vehicle's power system requires a large capacity, so a capacitor module is used. Incidentally, a film capacitor is generally used as the capacitor. [0003] Large-capacity film capacitors generate a lot of heat, so techniques for dissipating heat are required. For example, in Japanese Patent Application Publication No. 2012-009499 (JP-2012-009499A), a technology related to a capacitor module having a capacitor configured by winding a film around a core in the shape of a hollow quadrangular prism is disclo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G4/38H01G4/228
CPCH01G4/38H01G2/08H01G4/228Y02T10/70H01G4/385
Inventor 佐佐木宇大
Owner TOYOTA JIDOSHA KK