JPS6247172Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a sealed laminated alkaline storage battery.

Conventionally, this type of storage battery was constructed by stacking a plurality of finished unit cells, placing the cells in close contact with each other, and covering them with an outer tube. Because the tube is in close contact with each cell, even if each cell is provided with a valve body, it is virtually impossible to exhaust the gas from the cells stacked in the middle, which poses a risk of explosion. It had drawbacks.

The present invention eliminates the above-mentioned drawbacks, and consists of stacking a plurality of unit cell components inside a battery can via a metal partition plate with an insulating packing attached to the circumference, and stacking each insulating packing in close contact with each other. , the metal partition plate is provided with a gas conduction hole that connects each gap of the unit cell components partitioned by an insulating packing,
The opening of the battery can is equipped with a gas exhaust hole and a valve body, and the insulating gasket of the terminal-cum-cover body is closely superimposed on the insulating gasket of the metal partition plate by the terminal-duty lid body having an insulating gasket on the circumference. It is characterized by being hermetically sealed.

To explain the present invention, 1 is a unit cell component consisting of a circular positive electrode 2 made of nickel hydroxide and a circular negative electrode 3 made of cadmium hydroxide, with a separator 4 impregnated with an aqueous solution of sodium hydroxide interposed therebetween. A plurality of these elements 1 are arranged and stacked in a stainless steel battery can 5, and a nylon insulating packing 6 is placed around the circumference between each stacked cell component 1 as shown in FIG. A circular metal partition plate 7 made of stainless steel is interposed. Further, the metal partition plate 7 has gas conduction holes 9 that connect the gaps 8 formed between the cell components 1 and the insulating packing 6 when the cell components 1 are stacked.
is formed. Reference numeral 10 denotes a circular lid that also serves as a terminal and is made of stainless steel. The lid 10 is composed of a lid body 11 and a terminal portion 12 welded to the surface of the lid body 11. The lid body 11 has an exhaust hole 13 in the center. ,
A nylon insulating gasket 14 is attached to the circumferential portion, and the exhaust hole 13 is connected to the terminal portion 12 by a rubber valve 15.
A leaf spring 16 attached to the inner surface normally forms a sealed state, and the exhaust hole 13 opens when the internal gas pressure becomes abnormally high. 17 is a gas exhaust hole provided in the terminal portion 12. Further, the valve body portion includes a terminal portion 12, an exhaust hole 13, a rubber valve 15, and a leaf spring 16.
After the battery components 1 are stacked in the battery can 5 via the metal partition plate 7, the opening of the battery can 5 is hermetically caulked and sealed with the lid 10 which also serves as a terminal, thereby producing the book shown in FIG. Construct a devised storage battery.

Since the present invention has the above-described structure, even if the gas pressure in the unit cell components stacked in the middle becomes abnormally high, the terminal lid located above can be connected via the gas conduction holes in the metal partition plate. Since the valve body of the body works to exhaust gas to the outside, there is no risk of explosion like with conventional products, and the overall thickness is smaller than with conventional products that are made by stacking completed single cells. In addition, it has great practical value, as it requires only one valve body as a safety device, has a simple structure, and can be obtained at low cost.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of the sealed laminated alkaline storage battery of the present invention, and FIG. 2 is a metal partition plate used in the storage battery shown in FIG. 1 is a unit cell component, 5 is a battery can, 6 is an insulating packing, 7 is a metal partition plate, 8 is a void, 9 is a conduction hole, 10 is a lid that also serves as a terminal, 12 is a terminal portion, 13 is an exhaust hole, 15 is a rubber valve, and 16 is a leaf spring.

Claims (1)

[Scope of utility model registration request] A plurality of unit cell components are stacked in a battery can through a metal partition plate with an insulating packing attached to the circumference, and each insulating packing is closely stacked, and the metal partition plate has a unit cell component separated by the insulating packing. A gas conduction hole connecting each gap of the battery components is provided, and the opening of the battery can is equipped with a gas exhaust hole and a valve body, and is connected to the metal partition by a lid body that also serves as a terminal and has an insulating packing on the circumference. A sealed laminated alkaline storage battery in which the insulating packing of the plate and the insulating packing of the terminal/lid are closely stacked and hermetically sealed.