Fuse, battery pack using the fuse, and method of manufacturing the fuse
First Claim
Patent Images
1. A fuse comprising:
- a substrate;
a first lead terminal disposed on the substrate, the first lead terminal having a top surface and an end face;
a second lead terminal disposed on the substrate, the second lead terminal having a top surface and an end face;
a first intermediate layer formed on the top surface of the first lead terminal;
a second intermediate layer formed on the top surface of the second lead terminal; and
a fuse element made of a fusible member and coupled to the first and second lead terminals through the first intermediate layer and the second intermediate layer such that the fuse element spans the first and second lead terminals,wherein the first and second lead terminals are arranged such that the end face of the first lead terminal and the end face of said second lead terminal oppose each other, with a gap separating the end face of the first lead terminal from the end face of the second lead terminal, andwherein the first intermediate layer is disposed at a predetermined distance, which is more than zero, from the intersection between the top surface of the first lead terminal and the end face of the first lead terminal.
1 Assignment
0 Petitions
Accused Products
Abstract
A fuse has a pair of lead terminals disposed on a substrate, an intermediate layers for welding formed on the surface of at least one of the lead terminals, and a fuse element. The fuse element is welded to the pair of lead terminals through the intermediate layer so as to span the same. Further, the intermediate layer is formed on at least one of the lead terminals except a face thereof opposing each other. Owing to this configuration, after the fuse has melted down, the melted fuse element is prevented from being spread out into the space between the opposing faces of the lead terminals and insulation therebetween is secured.
28 Citations
25 Claims
-
1. A fuse comprising:
-
a substrate; a first lead terminal disposed on the substrate, the first lead terminal having a top surface and an end face; a second lead terminal disposed on the substrate, the second lead terminal having a top surface and an end face; a first intermediate layer formed on the top surface of the first lead terminal; a second intermediate layer formed on the top surface of the second lead terminal; and a fuse element made of a fusible member and coupled to the first and second lead terminals through the first intermediate layer and the second intermediate layer such that the fuse element spans the first and second lead terminals, wherein the first and second lead terminals are arranged such that the end face of the first lead terminal and the end face of said second lead terminal oppose each other, with a gap separating the end face of the first lead terminal from the end face of the second lead terminal, and wherein the first intermediate layer is disposed at a predetermined distance, which is more than zero, from the intersection between the top surface of the first lead terminal and the end face of the first lead terminal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 24)
-
-
15. A pack battery comprising:
-
a battery; a body housing the battery; a wiring led out from the body and electrically connected to the battery; and a fuse including; a substrate; a first lead terminal disposed on the substrate, the first lead terminal having a top surface and an end face; a second lead terminal disposed on the substrate, the second lead terminal having a top surface and an end face; a first intermediate layer formed on the top surface of the first lead terminal; a second intermediate layer formed on the top surface of the second lead terminal; and a fuse element made of a fusible member and coupled to the first and second lead terminals through the first intermediate layer and the second intermediate layer so as to span the first and second lead terminals, wherein the first and second lead terminals are arranged such that the end face of the first lead terminal and the end face of said second lead terminal oppose each other, with a gap separating the end face of the first lead terminal from the end face of the second lead terminal, and wherein the first intermediate layer is disposed at a predetermined distance, which is more than zero, from the intersection between the top surface of the first lead terminal and the end face of the first lead terminal. - View Dependent Claims (16, 17, 18, 19, 23)
-
-
20. A method of manufacturing a fuse comprising:
-
A) bonding a first lead terminal and a second lead terminal on a substrate; B) forming a first intermediate layer on a top surface of the first lead terminal, and a second intermediate layer on a top surface of the second lead terminal; and C) welding the fuse element to the first intermediate layer and the second intermediate layer such that the fuse element spans the first and second lead terminals, wherein the first and second lead terminals are arranged such that an end face of the first lead terminal and an end face of the second lead terminal oppose each other, with a gap separating the end face of the first lead terminal from the end face of the second lead terminal, and wherein the first intermediate layer is formed on the top surface of the first lead terminal at a predetermined distance, which is more than zero, from the intersection between the top surface of the first lead terminal and the end face of the first lead terminal. - View Dependent Claims (21, 22, 25)
-
Specification