JPH0515721Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to lead-acid batteries, particularly sealed lead-acid batteries.

BACKGROUND ART Conventionally, sealed lead-acid batteries have had configurations as shown in FIGS. 6 to 9. In the figure, 1 is the inner lid,
Reference numeral 4 denotes a battery case, and 5 a terminal plate, which is made of a copper alloy and is partially enclosed within the battery case 4 and partially exposed.
7 is an adhesive, and 8 is an inner wall forming an adhesive pool. Or 6 is a shelf part forming a group of electrode plates, and is made of lead or copper alloy. 5 terminal board is 6
It was connected to the shelf of the electrode plate group by soldering, etc., and was configured as an external terminal.

Problems that the invention attempts to solve This conventional configuration has the following two problems. One of them is the problem shown in FIGS. 6 and 7, when the adhesive is filled up to the upper limit VHI of the inner wall 8 of the adhesive pool of the inner lid 1.
When the battery case 4 incorporating the electrode plate group 6 is inverted and fitted, the adhesive overflows to the outside as shown at 7' in FIG. 7. This is because the shelf portion 6 forming the electrode plate group pushes away the adhesive 7 and causes it to overflow. Also, the other one is Figures 8 and 9.
In the problem shown in the figure, if the adhesive 7 is filled only up to VLI, which is a fairly low position in the adhesive pool 8 of the inner lid 1, one part of the terminal plate 5 as shown in FIG. This is because some areas are not coated with adhesive. In this case, the uncoated portion came into contact with the sulfuric acid content in the lead-acid battery, causing serious problems such as corrosion and cutting.

This invention solves these problems,
The purpose of this method is to control the amount of adhesive filled and to prevent the adhesive from overflowing to the outside and to prevent adhesive-uncovered parts of the terminal board made of copper alloy or the like.

Means for Solving the Problem In order to solve this problem, the present invention provides a lead-acid battery in which a battery case containing a conductive metal and an inner lid are sealed with adhesive. Ribs are provided in some parts to indicate the lowest and highest positions of the adhesive filling amount.

Effects With this configuration, there are problems such as a significant loss of the external commercial value of the battery due to adhesive overflowing to the outside, and serious problems such as corrosion and breakage caused by the parts of the terminal board that are not covered with adhesive. This means that this can be prevented.

Examples Examples of the present invention will be described below in Figures 1 to 5.
This will be explained with reference to the figures. FIG. 1 is a plan view of the back side of an inner lid according to an embodiment of the present invention, and FIG. 2 is a sectional view of the inner lid. FIG. 3 is a partial sectional view after the electrode plate group is housed in the battery case 4 and the terminal plate 5 and the electrode plate group shelf 6 are connected.

In the figure, 2 is a rib that indicates the lowest position of the adhesive filling amount on a part of the inner wall forming the adhesive pool of the inner lid, and 3 is a rib that similarly indicates the highest position.

When sealing the battery case 4 and the inner lid 1 with adhesive,
The adhesive 7 is shown in Figure 2 in the pool of the inner lid 1.
Fill so that the adhesive surface is located between VL (lowest position) and VH (highest position). FIG. 4 shows the state after filling is completed. Next, the battery case in the state shown in FIG. 3 is fitted into the adhesive filler inner lid 1 shown in FIG. 4.
Since the adhesive 7 is controlled in an appropriate amount, the terminal board 5 is completely covered with the adhesive 7, as shown in FIG.
It is possible to simultaneously isolate the terminal board 5 from the internal atmosphere of the battery and seal the battery case 4 and the inner lid 1 without causing adhesive to overflow.

Effects of the invention As described above, according to the invention, ribs are provided on a part of the inner wall of the adhesive pool of the inner lid to indicate the lowest and highest positions of the adhesive filling amount, thereby preventing adhesive from overflowing to the outside. This has the effect of preventing serious problems such as corrosion and cutting of conductive metal terminal plates.

[Brief explanation of the drawing]

Figure 1 is a plan view of the inner lid of the embodiment of the present invention, Figure 2
The figure is a cross-sectional view of the inner lid of the embodiment of the present invention, Figure 3 is a partial cross-sectional view of the battery before the inner lid is sealed, Figure 4 is a cross-sectional view of the inner lid of the embodiment of the present invention filled with adhesive, and Figure 5
The figure is a cross-sectional view of the inner lid and the battery case according to the embodiment of the present invention, FIG. 6 is a cross-sectional view of the conventional example with the inner lid excessively filled with adhesive, and FIG. 7 is a conventional example with adhesive. Figure 8 is a cross-sectional view of a conventional example where the inner lid is filled with too little adhesive and the battery case is joined together. Figure 9 is a conventional example where the adhesive is It is a sectional view of a state in which an insufficiently filled inner lid and a battery case are joined. 1... Inner lid, 2... Rib indicating the lowest position of adhesive filling amount, 3... Rib indicating the highest position of adhesive filling amount, 4... Battery case, 5... Terminal board, 6... Pole Shelf of board group, 7...Adhesive, 8...Inner wall forming adhesive pool.

Claims (1)

[Scope of utility model registration request] In a lead-acid battery in which a battery case containing a conductive metal and an inner lid are sealed with adhesive, ribs are provided in a part of the adhesive pool of the inner lid to indicate the lowest and highest positions of the amount of adhesive filled. A lead-acid battery.