Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Cell enclosure structure – e.g. – housing – casing – container,...
Patent
1984-11-27
1986-01-07
Skapars, Anthony
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Cell enclosure structure, e.g., housing, casing, container,...
429181, 429185, 429225, 429184, H01M 230
Patent
active
045634025
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to a lead storage battery and particularly to improvements in a closed type lead storage battery having a plastic container, wherein the construction of the bond between the terminal poles and a cover for the plastic container is improved to provide a leakproof lead storage battery.
In lead storage batteries using dilute sulfuric acid as the electrolyte, leakage of the electrolyte is the most detestable problem as it damages not only the battery itself but also the equipment which uses the battery.
Such a leakage phenomenon takes place mainly (1) between the plastic container and the cover, (2) around the terminal poles of the battery, and (3) between the cells in the case of the monoblock battery. Thus, prevention of this leakage phenomenon has been a long-standing problem in lead storage batteries, but no preventive method has been found which is simple and yet reliable.
A conventional method of bonding the terminal poles to the cover will now be described with reference to the drawings.
As shown in FIG. 1, there is a step of filling a bonding agent 8 into a recess in the back of a cover 5 in which a U-shaped connector 11 connecting cells is embedded, and into an annular recess in an outer peripheral portion bonded to a plastic container 1, and there is a subsequent step of invertedly fitting the plastic container 1 having inserted therein a group of plates 2 over the cover 5 lying with its back side directed upward, and then bonding them together. At this time, a terminal pole 3 is not embedded in the bonding agent 8 but projects outwardly through a pole hole 12 in the cover 5. After going through the step of curing said bonding agent, the battery is brought back to its normal position, as shown in FIG. 2. Then, a rubber packing 13 is fitted on the terminal pole 3 so that a bonding agent 14 for fixing the terminal pole 3 to the cover 5 cannot fall down through the pole hole 12 onto the group of plates 2 on the cell chamber side. The front end of the terminal pole is then soldered to a Faston tab terminal 7. After the step of filling the bonding agent 14 into the recess has been performed, the bonding agent 14 is cured to thereby bond the terminal pole and the cover together.
However, this method of producing batteries requires that the operation of bonding the terminal poles to the cover to be performed in two stages, i.e., on the U-shaped connector portion connecting the cells and on the terminal pole portion; thus, not only is the number of steps excessive but also it takes a long time for the bonding agent to cure. Therefore, there has been a disadvantage that too much time is taken for completion of the battery.
SUMMARY OF THE INVENTION
The present invention is a lead storage battery wherein a terminal connected at one end thereof to a pole of a group of plates housed in a plastic container and projecting at the other end thereof upward through an end of a cover is partly embedded in a bonding agent which fixes said plastic container and said cover together, and defined between a terminal receiving recess formed in said plastic container and a terminal bend inserted in said terminal receiving recess and positioned below said bonding agent is a space which prevents the two from overall surface contact.
According to the invention, at the same time as the plastic container and cover are bonded together, the terminal poles and cover are bonded together, so that the fixing of the terminal poles to the cover can be easily and economically effected and, moreover, the following effects can be attained.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a sectional view of an electrolytic cell placed upside down in a conventional method of producing lead storage batteries;
FIG. 2 is a sectional view showing the storage battery in normal position, with the terminal poles and cover fixed together by a bonding agent in accordance with the conventional method;
FIG. 3 is an exploded perspective view of the plastic container and cover of a lead storage batt
REFERENCES:
patent: 3808073 (1974-04-01), Navarre
patent: 4448863 (1984-05-01), Terrell
Kobayashi Kenji
Uchida Yasuhiko
Utsunomiya Tsuyoshi
Matsushita Electric - Industrial Co., Ltd.
Skapars Anthony
LandOfFree
Lead storage battery with improved bond between the terminal pol does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Lead storage battery with improved bond between the terminal pol, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lead storage battery with improved bond between the terminal pol will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-111583