JPS5931006Y2 - Anode plate for lead acid battery - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an improvement of anode plates for lead-acid batteries.

Conventionally, lead-acid batteries using paste-type electrode plates had a structure in which the anode plate was inserted between flat glass mats, but as the life of the anode active material became finer, the glass mat mesh was inserted. If removed, the battery may fall off, significantly impairing battery life characteristics.
Furthermore, short circuits due to the swollen active material and cathode active material that have fallen off significantly impair battery life characteristics.

On the other hand, a clad lead-acid battery has been used as a structure to eliminate such drawbacks, but it has drawbacks such as a very complicated manufacturing process and a high manufacturing cost.

The present invention eliminates the above-mentioned drawbacks, adopts the advantages of the clad type structure, simplifies the process, and provides an anode plate for lead-acid batteries that can be automatically mass-produced.

1 is an active material holder woven from glass fiber, 2 is a weft, and 3 is a weft thread.
is a warp, 4 is a welding hole in which the mesh of the glass woven fabric has been enlarged in advance, and a synthetic resin frame 5 made of polyethylene, polypropylene, etc.
It is knitted in a state that matches the pitch of

6 is a lead grid body, 7 is an active material, and 8 is a welded part.

In the present invention, a lead grid body 6 is filled with an active material 7, and the active material holder 1 and the synthetic resin frame 5 are welded by heat welding or ultrasonic welding to form a welded part 8 and are integrated.

In the thus obtained anode plate, the molten resin of the synthetic resin frame 5 sufficiently flows out through the enlarged welding holes 4, entangles with the fibers of the glass woven cloth, and solidifies, so that the welding force is higher than that of conventional glass woven cloth. It increased by 1.5 to 2 times.

The anode plate according to the present invention is ideal for lead-acid batteries for electric vehicles, forklifts, and trolleys that are used for deep charging and discharging.

As mentioned above, the present invention has a structure that prevents the active material from falling off and short circuits, so the battery life characteristics are significantly improved compared to lead-acid batteries that use conventional paste-type electrode plates, and lead-acid batteries that use clad-type electrode plates. Compared to storage batteries, the manufacturing process is simpler, and the price can be significantly lowered, so it has great practical value.

[Brief explanation of drawings]

FIG. 1 is a front view of an active material holder according to the present invention, FIG. 2 is a front view of an anode plate according to the present invention, and FIG. 3 is a sectional view taken along line AA' in FIG. 2. 1 is an active material holder, 4 is a welding hole, 5 is a resin frame rib, 6 is a lead grid, and 8 is a welded part.

Claims (1)

[Scope of utility model registration request] In a substrate that integrates a synthetic resin frame filled with an active material and a lead alloy lattice, meshes are formed in advance on the part of the active material holder made of woven or nonwoven fabric that comes into contact with the surface of the synthetic resin frame to be thermally welded. An anode plate for a lead-acid battery, which is enlarged and the heat-welded portion is heat-welded to the surface of a synthetic resin frame.