JPH11176415A - Lead-acid battery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pole column enabling to locate a terminal in arbitrary position by increasing the latitude of the terminal position in a lead-acid battery. SOLUTION: In a pole column 3 which connects strap, that is, an ear of a plate with a terminal 2, the shaft center on the terminal side of the pole column 3 connecting a terminal bushing with the strap differs from the shaft center on the strap side. When a strap part 1 is formed, burner welding is possible as in conventional cases, even though a molten part for welding the pole column 3 with it exists, and the terminal 2 can be positioned in the immediate overhead direction of the strap part 1, thus the latitude of freedom of the terminal position can be increased.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a pole for connecting a strap and a terminal of a lead storage battery.

[0002]

2. Description of the Related Art A lead-acid battery has a required number of positive plates, negative plates and separators alternately laminated, and the same polar plate ears are connected by a strap to form a plate group, and a pole is joined to the strap. Then, these are housed in a battery case, covered with a lid having terminal bushings for positive and negative electrodes, and the battery case and the lid are joined by heat welding or an adhesive. At this time, the pole is inserted into the terminal bushing, and the terminal bushing and the pole are connected by welding or the like.

[0003] The strap and the pole are manufactured by a cast-on-strap method in which the strap and the pole are integrally formed, or a pole is first manufactured as a separate part, and the pole is formed in a mold. There is a burner welding method in which an additional lead is poured into a mold after inserting the upper end of the electrode plate ear to form a strap, and at the same time, integrate a separate pole as a separate part. The former is a relatively small-capacity battery suitable for mass production, and the latter is mainly used for small-production batteries.

In either system, as shown in FIG. 1, the pole 3 needs to be aligned with the center of the terminal bushing and the center of the pole in order to be inserted into the terminal bushing 2, so that it is an upright cylinder. For this reason, the position of the strap (that is, the ear of the electrode plate) and the position of the terminal have certain restrictions in design.

[0005]

In particular, when there is a terminal position directly above the strap, the cast-on-strap method can easily be manufactured because the strap and the pole are formed simultaneously and integrally. However, with the burner welding method, as shown in FIG.
In order to form a strap 1 by melting a lead alloy such as additional lead and to join a separately prepared pole 3, the pole must have a molten portion 5. For this reason, the terminal could not be arranged directly above the strap.

[0006]

According to the present invention, in a lead-acid battery, the terminals are arranged directly above the strap by making the axis of the pole connecting the strap and the terminal different between the terminal side and the strap side. Needless to say, the terminals can be arranged at arbitrary positions.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on embodiments.

[0008] In FIG. 3, if the pole 3 is different in the position of the center line between the upper part and the lower part, when forming the strap part 1, the fused part 5 for joining the pole 3 is formed. Even so, burner welding can be performed as in the past, and the terminal 2 can be arranged directly above the strap portion 1, so that the degree of freedom of the terminal position can be increased. FIG. 4 is a sectional view of a main part of a battery in which a strap, a pole, and a terminal are burner-welded using the pole of the present embodiment.

In this embodiment, the axis of the pole is made different from the center to the side of the battery. However, the axis can be made different in any of the front, rear, left and right on the plane, and the terminal positions can be arbitrarily arranged. can do.

[0010]

As described above, when the pole according to the present invention is used, the degree of freedom of the terminal position is increased, and the design range of the load device is widened.

[Brief description of the drawings]

FIG. 1 is a side view showing a cross section of a main part of a battery after burner welding with a conventional polar pole.

FIG. 2 is a perspective view showing a conventional burner welding using a pole.

FIG. 3 is a perspective view showing burner welding by a pole according to one embodiment of the present invention.

FIG. 4 is a diagram showing a cross section of a main part of a battery after burner welding with a pole according to one embodiment of the present invention.

[Explanation of symbols]

 1. Strap 2. Terminal 3. Pole 4. Additional lead 5. 5. Fused part for joining pole columns Burner 7. Pole ears

Claims (1)

[Claims] 1. A lead storage battery according to claim 1, wherein the axial center of the pole connecting the strap and the terminal is different between the terminal side and the strap side.