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PTC device and electric device containing same

A technology for electrical equipment and PTC components, applied in the field of PTC devices, can solve problems such as reliability reduction

Active Publication Date: 2011-06-08
TYCO ELECTRONICS JAPAN GK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Regardless of the embodiment where the PTC component is used on a battery pack, or in any other basic case of electrical equipment, this reduction in reliability is undesirable when the PTC component is used as a circuit protection device

Method used

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  • PTC device and electric device containing same
  • PTC device and electric device containing same
  • PTC device and electric device containing same

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Embodiment Construction

[0048] Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings. Throughout the drawings, elements denoted by the same reference numerals are used to denote elements having substantially the same function.

[0049] The PTC component used in the PTC device according to the present invention is well known, and the laminated PTC elements and metal electrodes and the like constituting the PTC component are also well known. The term "PTC component" is used to indicate the general meaning of the term; and it is particularly preferred that the PTC component comprises: a PTC element formed of a so-called PTC structure (ie, a polymer PTC element) in a stacked shape; A first metal electrode (in particular a foil electrode) and a second metal electrode (in particular a foil electrode) on the main surface. Moreover, polymer PTC elements are composed of so-called conductive polymer structures in which conductive fillers (such as carbo...

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Abstract

Provided is a PTC device in which deterioration of the reliability of a PTC element is restrained as much as possible. Said PTC device is comprised of a PTC element (14), which is comprised of a laminar PTC element and metal electrodes provided on either side thereof, and a retaining metal layer retaining insulation layer (12), which is comprised of an insulation layer (16) and a metal layer (18) provided on one of the primary surfaces of the insulation layer, wherein one of the metal electrodes of the PTC element is provided on the metal layer to electrically connect them together.

Description

technical field [0001] The present invention relates to a PTC device comprising a PTC component, and more particularly to a PTC device comprising a polymer PTC component used as a circuit protection device, and an electric or electronic device comprising such a device. Background technique [0002] Polymer PTC (Positive Temperature Coefficient) parts are widely used in various electric or electronic devices for preventing failure of important elements constituting the devices if an extremely large current flows in a power circuit or the like. Such components are known per se and typically comprise a PTC element, usually in laminated form, consisting of a polymer structure comprising a polymer with conductive filler dispersed therein and a metal electrode (eg a metal foil electrode). , the metal electrodes are arranged on the facing main surfaces of the PTC element. [0003] For example, PTC components are used in rechargeable battery packs as electrical equipment. The batt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01C7/02H01M2/34
CPCH01M2200/106H01C7/02Y02E60/10H01M50/572
Inventor 小山洋幸
Owner TYCO ELECTRONICS JAPAN GK
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