Over-current protection device
US-2024387080-A1 · Nov 21, 2024 · US
Over-current protection device
US9401234B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9401234-B2 |
| Application number | US-201414186224-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 21, 2014 |
| Priority date | Mar 22, 2013 |
| Publication date | Jul 26, 2016 |
| Grant date | Jul 26, 2016 |
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- Title
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- Abstract
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Abstract
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An over-current protection device comprises a PTC device, first and second electrodes, a first welding metal plate and a second welding metal plate. The PTC device comprises a first conductive layer, at second conductive layer and a PTC polymeric material layer laminated therebetween. The first electrode electrically connects to the first conductive layer. The second electrode electrically connects to the second conductive layer and is separated from the first electrode. The first welding metal plate is formed on an upper surface of the device and connects to the first electrode. The second welding metal plate is formed on the upper surface or a lower surface of the device and connects to the second electrode. The first and second welding metal plates are placed at two opposite ends of the strip-like structure, and each of them has a thickness sufficient to withstand spot-welding without significant resultant damage to the PTC device.
First claim
Opening claim text (preview).
We claim: 1. An over-current protection device; comprising: a substrate comprising a first bonding pad, a second bond pad, a third bonding pad and a fourth bonding pad; a resistive device of a strip-like structure having an upper surface, a lower surface and four lateral planar surfaces, the resistive device comprising a PTC device, a first electrode and a second electrode, the PTC device comprising a first conductive layer, a second conductive layer and a PTC polymeric material layer laminated therebetween, the first electrode electrically connecting to the first conductive layer, the second electrode electrically connecting to the second conductive layer and being separated from the first electrode; a first welding metal plate formed on the substrate at one end and electrically connected to the first electrode; and a second welding metal plate formed on the substrate at another end and electrically connected to the second electrode; wherein the first bonding pad is configured to connect to the first welding metal plate, the second bonding pad is configured to connect to the second welding metal plate, the third bonding pad is disposed on a lower surface of the resistive device and is configured to connect to the first electrode, the fourth bonding pad is disposed on the lower surface of the resistive device and is configured to connect to the second electrode; wherein the first and third bonding pads are electrically connected, and the second and fourth bonding pads are electrically connected; wherein each of the first and second welding metal plates has a thickness sufficient to withstand spot-welding without significant resultant damage. 2. The over-current protection device of claim 1 , wherein the substrate comprises epoxy containing fiberglass or a flexible printed circuit.
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Classifications
- H01C7/021Primary
formed with two or more layers · CPC title
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- What does patent US9401234B2 cover?
- An over-current protection device comprises a PTC device, first and second electrodes, a first welding metal plate and a second welding metal plate. The PTC device comprises a first conductive layer, at second conductive layer and a PTC polymeric material layer laminated therebetween. The first electrode electrically connects to the first conductive layer. The second electrode electrically conn…
- Who is the assignee on this patent?
- Tseng Chun Teng, Chen Cheng Hsiang, Li Pin Syuan, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification H01C7/021. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jul 26 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).