Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Cell enclosure structure – e.g. – housing – casing – container,...
Reexamination Certificate
2001-01-22
2003-05-06
Kalafut, Stephen (Department: 1745)
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Cell enclosure structure, e.g., housing, casing, container,...
C429S180000, C429S177000, C029S623200
Reexamination Certificate
active
06558837
ABSTRACT:
INTRODUCTION
The present invention relates to the structure for a battery including a primary, a secondary, a fuel cell or a combination battery. In particular, it relates to the placement of the positive and negative terminals on the side wall(s) of the casing for a battery.
BACKGROUND OF THE INVENTION
Previously, batteries, such as the sealed lead-acid storage batteries, have a structure shown in
FIG. 1. A
sealed lead-acid storage battery comprises a casing
10
′, a main cover
60
′ and a top cover
90
′. In the casing, positive and negative plates
31
′ and
42
′ are arranged alternatively with separators
21
′ therebetween. All of the positive plates
31
′ are connected in parallel to a positive post
35
′. All the negative plates
42
′ are connected in parallel to a negative post
46
′. The main cover
60
′ is fixed onto the casing
10
′ and sealed with an adhesive resin. The positive and negative posts
35
′ and
46
′ respectively go through openings
67
′ and
68
′ in the main cover
60
′ and are welded respectively to positive and negative terminal lugs
37
′ and
48
′, the lower part of which occupy larger areas than the posts for the terminals. An adhesive resin is used to fill in the gaps between openings
67
′ and
68
′ and the positive and negative terminals. The casing is filled with an electrolyte through an opening on the main cover which is then covered with a rubber safety valve
23
′. One of the drawbacks of the prior art battery is that two steps are necessary to seal the battery: one to seal the main cover
60
′ to the casing and the second to seal openings for the terminal lugs
37
′ and
48
′ on the main cover
60
′. A second drawback is that terminals
37
′ and
48
′ located on the main cover and top cover
90
′ are prone to be short-circuited by a metal object which may have fallen onto the top of the battery. Further, connections to the battery can only be made on the top of the battery, and extra space is necessary to accommodate the terminals.
SUMMARY OF THE INVENTION
To overcome the above mentioned drawbacks of the prior art batteries, a battery with terminals positioned on the side wall(s) of the casing below the main cover for the battery is provided. By placing the terminals on the side walls of the casing, the possibility of being short circuited by fallen metal objects is eliminated to increase safety in operation, the connections to the battery is easier to make and the space needed for storage of the battery or installation is reduced. At the same time, the two steps necessary for sealing the battery is reduced to one step.
To achieve these goals, (1) The positive and negative terminals are fixed on the opposite side wall(s) of the casing and respectively connected to the positive and negative posts which are connected to the positive and negative terminals through slots located in the side wall(s) of the main cover; (2) After the plates and terminals are properly connected, the main cover can then be fixed onto the casing and sealed thereto with an adhesive.
The invention is also directed to a method of manufacturing a battery with side flanking terminals. The method comprises placing the positive and negative terminals in the side wall(s) of a battery and connecting the terminals respectively to the positive and negative posts to which the positive and negative plates are respectively connected in parallel arrangements. Then sealing the main cover onto the casing with an adhesive.
REFERENCES:
patent: 2132793 (1938-10-01), Kyle
patent: 4563402 (1986-01-01), Kobayashi et al.
patent: 4898796 (1990-02-01), Furukawa et al.
patent: 5599641 (1997-02-01), Ching, Jr. et al.
Kalafut Stephen
Morgan & Finnegan , LLP
Xiongtao Power Supply Technology Co., Ltd.
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