JPH04351845A - Rechargeable battery - Google Patents

Abstract

PURPOSE:To achieve interchangeability with a dry battery in use. CONSTITUTION:In a hollow cylindrical body having a preliminarily set outer diameter, its inner diameter will be identical with the outer diametrical size of a secondary battery to be stored in the cylindrical body, while the one end is claw-shaped along the bottom R shape of the secondary battery to be stored, and the other end has a recessed part 6 to be fitted to a sealing cap. A fitting 2 press-processed into a predetermined size so as to match the anode terminal of the secondary battery with a predetermined height outer diameter, is mounted on and is stored in the hollow cylindrical body by electric welding, by application or by press-fitting, and the cylindrical body is sealed by a cap having a recessed part 7 to be fitted to the recessed part 6 of the hollow cylindrical body as well as a circular hole for penetrating the fitting 2.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvements in rechargeable batteries that provide compatibility with dry cell batteries in a wide variety of battery applications.

0002

[Prior Art] In recent years, dry batteries have been widely used as a power source for cordless equipment, but due to economical considerations, rechargeable batteries
Secondary batteries, especially nickel-cadmium storage batteries, are becoming popular. However, nickel-cadmium storage batteries D and C types, which are equivalent to AA and AA dry batteries, have a capacity greater than necessary.
Another disadvantage was that it was expensive. So, Jikko 56-25
As disclosed in Japanese Patent No. 494, a method has been proposed in which a nickel-cadmium storage battery having small dimensions and capacity is covered with a plastic outer can to match the standard dimensions of dry batteries.

0003

[Problems to be Solved by the Invention] However, in the former method, after attaching metal fittings to serve as an anode terminal and a cathode terminal to a secondary battery that is smaller than the standard size of a dry battery, a plastic outer can that is divided into two parts is attached. The method involves covering and fixing by adhesion or welding using ultrasonic waves, etc., and there are problems in that the number of parts is large and the assembly work is complicated.

0004

[Means for Solving the Problems] The present invention provides a single unit of a dry battery.
This is a nickel-cadmium storage battery smaller than an AA size, with only the metal fitting that serves as the anode terminal attached, and the outer case is covered.

[0005]

[Operation] Easy assembly work.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an embodiment of a storage battery 1 which is compatible with AA size dry batteries. 1 is an N1200SC type nickel-cadmium storage battery, and a metal fitting 2 is connected to the anode terminal by electric welding, crimping, or press-fitting.

Next, the storage battery 1 in this state is stored in a plastic exterior can 3 from above. Thereafter, a plastic exterior lid 4 is fixed to the exterior can 3. In this case, the outer can 3
The recess 6 provided in the outer lid 4 and the protrusion 7 provided in the outer lid 4 are in a fitted state, and the metal fitting 2 is passed through the metal fitting through hole 8 of the outer lid 4. In this state, the storage battery 1 is
It is pressed by the hanging portion 9 of the exterior lid 4. On the other hand, the outer can 3 has a claw portion 5 at its lower end that follows the bottom R shape of the storage battery 1, and the claw portion 5 prevents the stored storage battery 1 from falling out. Therefore, with such a structure, welding of the outer can 3 using adhesive or ultrasonic waves is not necessary.

FIG. 2 shows an embodiment in which the battery is interchangeable with a single type dry battery. The difference in structure from the embodiment shown in FIG. 1 is that the hanging portion 9 of the exterior lid 4 is formed to be elongated downward. In other words, the hanging part 9 of the outer lid 4 is formed such that the lower part of the hanging part 9 is in contact with the upper part of the single-cell storage battery 1, and the inner lower part of the outer can 3 is It is formed into a U-shaped cross section, and has a claw portion 5 at the lower end of the same shape as the outer can 3 shown in FIG. 1 inside the U-shaped portion 10. Therefore, the storage battery 1
is being pressed by. U-shaped portion 10 of the other outer can 3
The periphery is pressed by the U-shaped portion 10, and the claw portion 5 of the U-shaped portion 10 prevents it from falling off.

[0009]

[Effects of the Invention] As described above, the present invention has the advantage that the number of parts is small and assembly work is simple.
This type of battery can be provided at low cost. The first industrial value is enormous.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing an example of a state where the battery is compatible with AA type dry batteries.

FIG. 2 is an explanatory diagram showing an example of a state in which the battery is compatible with a single type dry battery.

[Explanation of symbols]

1 is a storage battery, 2 is a metal fitting, 3 is an outer can, 4 is an outer lid, 5 is a claw part, 6 is a recessed part, 7 is a convex part, 8 is a metal fitting through hole, 10 is a U
glyph.

Claims (2)

[Claims] Claim 1: An exterior can made of synthetic resin that houses a secondary battery with a metal fitting attached to the anode terminal has a claw portion at the bottom that follows the rounded bottom shape of the secondary battery, and a recess inside the top. The exterior lid is provided with a protrusion that fits into the recess of the exterior can on the outside of the hanging part, and a metal fitting through hole that penetrates the metal fitting in the center part, and the outer can and the exterior lid are connected to the secondary battery. What is claimed is: 1. A rechargeable battery, characterized in that the rechargeable battery is sealed by fitting the concave portion and the convex portion with the metal fitting inserted into the metal fitting through-hole of the external lid while storing the battery in the external can. 2. The rechargeable battery according to claim 1, wherein the inner lower part of the outer can has a U-shaped cross section, and a claw part is formed at the inner lower end to follow the rounded shape of the bottom of the secondary battery. battery.