JPH03138857A - Battery - Google Patents

Abstract

PURPOSE:To prevent a short circuit before the usage of a battery, secure safety, and facilitate the work during usage by coating the whole surface of the battery including a terminal plate with an insulating material. CONSTITUTION:A battery is constituted of a positive electrode can 1, a positive electrode tab terminal 2, a negative electrode can 3, and a negative electrode tab terminal 4, and the whole is covered with an insulating film 5. For use, the film on only a lead member may be removed with a sharp knife or sandpaper. If the insulating material is polyurethane or the like, it can be easily removed by the heat of a soldering iron, tips of tab terminals 2 and 4 are mostly connected to an electric circuit by soldering, and these materials can be easily removed by heat as compared with other materials during the soldering work. A short circuit before the usage of the battery is prevented, safety is secured, and the work during usage is facilitated.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to improvements in battery safety.

(Summary of the Invention) The present invention aims to improve the reliability of sealing by applying a coating to the entire battery, such as the enamel coating applied to conductive wires.

[Conventional technology]

Batteries cannot be used unless the electrical leads are removed.
Instead of covering the entire surface with an insulating material, wires have been manufactured in such a way that the terminals are always exposed at the connecting parts.

FIG. 2 shows a battery with tab terminals according to the prior art.

In the figure, 6 parts are covered with insulating vinyl chloride resin, but this is not coated, but merely mechanically attached using heat shrinkability. Other parts, indicated by cross-hatching, have exposed metal.

[Problem to be solved by the invention]

Because the terminals are exposed, if conventional batteries are placed with conductive objects such as wires or nails, or if multiple batteries are placed together, a short circuit may occur, resulting in heat generation, fire, or explosion. There was a risk of causing such problems. In order to avoid this, packaging such as blister packs is used, but this is expensive.

There is an example of a vendor who handled lithium batteries with tab terminals taking a large number of them out of their packaging and setting them to -11, resulting in short circuits, heat generation, and squirting. A system in which the terminal insulation is not removed until use is desirable.

[Means to solve the problem]

In order to solve the above-mentioned problems, the present invention coats the entire battery with an insulating material.

[Effect]

Since the entire battery including the terminals is coated with an insulating material, short circuits such as the above-mentioned problem never occur, and safety is ensured.

When in use, the coating only needs to be removed from the lead portion using a sharp knife, sandpaper, etc.

When the insulating material is polyurethane, polypropylene polyethylene, or polyester, it can be easily removed using heat from a soldering iron or the like. In particular, the tips of tab terminals are often connected to electrical circuits by soldering, and these materials have the advantage of being easier to work with since they can be easily removed by heat compared to other materials. .

Flat batteries are susceptible to short circuits if they are not coated. Therefore, complete coating as in the present invention is a particularly advantageous type of battery.

〔Example〕

FIG. 1 shows an embodiment of the battery with tab terminals of the present invention. In the figure, 1 is a positive electrode can, 2 is a positive electrode tab terminal, 3 is a negative electrode can, 4 is a negative electrode tab terminal, and the whole is covered with an insulating coating 5. In this example, polyurethane was used as the insulating covering material.

FIG. 3 shows an embodiment of the flat battery of the present invention.

In the figure, 11 is a positive terminal plate, and lla is a protrusion of the positive terminal plate, to which a circuit is connected like a tab terminal.

7 is a synthetic resin sealant, I3 is a negative electrode terminal plate, I3a is a projection of the negative electrode terminal plate, and its function is the same as that of lla. 8 is a negative electrode active material, 9 is a separator, and 10 is a positive electrode active material. The active material is impregnated with an electrolyte. The entire battery is covered with an insulating coating 5.

Both the embodiments of Figures 1 and 3 were safe to handle together without extensive additional packaging, and their effectiveness was evident.

〔Effect of the invention〕

As explained above, this invention has the effect of ensuring the safety of the battery before use by coating the entire surface of the battery with an insulating material.

[Brief explanation of the drawing]

FIG. 1 shows an embodiment of the battery with tab terminals of the present invention, (a
), (bl, (C1 and fd) are top views, respectively.
The front view, side view, enlarged sectional view, and Figure 2 are examples of conventional batteries with tab terminals. (a), (bl, Tel, and (
di is a top view, a front view, a side view, and an enlarged sectional view, respectively; FIG. 3 is an embodiment of the flat plate battery of the present invention;
, (bl and (C1 are the plan view 9 front view and enlarged cross-sectional view, respectively.・ ・ 13 ・ Protrusion of positive electrode terminal plate Positive electrode tab terminal Negative electrode can page winding terminal Negative electrode tab terminal Insulation coating Insulation tube Negative electrode active material separator Positive electrode active material Positive electrode terminal plate Negative electrode terminal plate and above

Claims (4)

[Claims] (1) A battery characterized in that the entire surface of the battery including the terminal plate is coated with an insulating material. (2) The battery according to claim 1, wherein the coating material is any one of polyurethane, polypropylene, polyethylene, and polyester. (3) The battery according to claim 1, wherein the battery is button-shaped, coin-shaped, or cylindrical in shape with tab terminals. (4) The battery according to claim 1, wherein the battery has a flat plate shape with a protrusion.