JPH0145943B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention comprises an intermediate pole pole for inter-cell connection, which is used to electrically connect groups of electrode plates in adjacent cell chambers to each other by penetrating a partition wall in a monoblock storage battery or the like. The present invention relates to a method of forming a strap and an intermediate pole used in the formation.

Generally, the strap passes through a plurality of electrode plate lugs 3 of the same polarity of the electrode plate group 2 laminated in the penetration groove of the comb-like jig 1 and enters the recess 4 of the jig 1 as shown in the first figure. It is then manufactured by heating and melting the intermediate pole post 5 inserted into one end of the recess 4 while supplementing lead as necessary with a burner, etc., and welding each pole plate lug 3 together. Ru. However, conventionally, the angle θ between the strap 6 and the intermediate pole 5 formed as shown in the second figure is 90 degrees, and the protrusion 7 provided on the intermediate pole 5 allows the electrode plate group 2 to be connected to the cells of the battery case 8. Room 9
When storing the plate group 2 inside the cell, it gets caught on the partition wall 10 and cannot be stored easily, so the electrode plate group 2 must be pushed out to some extent by the flexible partition wall 10 or the intermediate pole column 5 may be pushed down a little towards the inside of the cell chamber. was pushed into cell room 9. For this reason, the workability is poor, and when the intermediate pole column 5 is pushed down when stored and returned to its original state when welding with the adjacent opposing intermediate pole column, a great deal of stress is applied to the lower part of the intermediate pole column, resulting in mechanical damage. There were drawbacks such as the risk of weakening.

Furthermore, as shown in the third figure, the intermediate pole column 5 inserted into the jig 1 when forming the strap is integrally provided with its lower part standing upright on the side edge of the pedestal 11 whose bottom surface is horizontal. It tends to fall to the side (in the direction of arrow A), which impairs the workability of forming the strap.

The first invention aims to improve the workability of strap formation and to facilitate the storage of a group of electrode plates into a cell chamber. In a method for forming a strap including an intermediate pole post in which the ears are welded together with the intermediate pole post in the recess to form the strap, the angle between the intermediate pole post and the formed strap is
The second invention is characterized in that the upright plate-like body of the intermediate pole column is inserted into the recess at an angle of less than 90 degrees and welded to the pole plate ear, and the second invention is used for forming the strap. The present invention is characterized in that the intermediate pole pillar is formed integrally with a pedestal having an inclined surface on the bottom thereof.

An embodiment of the present invention will be described in detail below based on the drawings. As shown in the fourth figure, the intermediate pole column 20 has a protrusion 21 on the side surface of a plate-like body 27, and the plate-like body 27 is implanted at the side end of the upper surface of the pedestal 22. The pedestal 22 has a bottom surface 23 formed as an inclined surface so that it is thicker on the side where the plate-like body 27 is installed and becomes thinner as the distance from the plate-like body 27 increases. For example, the pedestal 22 has a thickness A of 3 mm on the side of the plate-like body 27, a thickness B of the other thin end of the pedestal 22 of 2 mm, and a length L.
is formed to 9mm. When the intermediate pole column 20 formed in this way is inserted and placed in one end of the recess 4 of the comb-like jig 1, a plate-like body 27 is formed as shown in the fifth figure.
is arranged so as to be inclined with respect to the bottom surface of the recess of the jig so as to cover the pedestal 22, so that it is placed in a well-balanced manner and does not fall over as in the conventional case. Then, the plurality of same-polarity electrode plate lugs 25 of the electrode plate group 24 housed in the recess 4 and the intermediate pole post 20 are connected to each other through the penetration groove formed on the bottom surface of the recess 4 of the jig 1. They are heated with a burner while supplementing with lead and welded together to form a strap with an intermediate pole post 20.
The formed strap 26 has an angle θ of 90 with respect to the plate-shaped body 27 of the inclined intermediate pole column 20 as shown in FIG.
For example, it is about 83.5 degrees. Therefore, when the electrode plate group 24 is stored in the cell chamber 9 of the battery case 8, the protrusion 21 of the intermediate pole column 20 only slightly touches the partition wall 10, so that the electrode plate group 24 can be stored without any practical problem. It is. Incidentally, if the lower part of the protrusion 21 of the intermediate pole column 20 is rounded as shown in FIG. 7, the storage operation will be made easier.

Then, the electrode plate group 24 housed in the cell chamber 9 raises the inclined intermediate pole column 20 to stand upright, and the partition wall 10
The electrode plates are inserted through a hole drilled into a recess formed in an intermediate pole column of a group of electrode plates housed in an adjacent cell chamber, and are fused and joined to each other by resistance welding or the like.

Note that the method of arranging the plate-shaped body of the intermediate pole pillar in the recess at an angle is not limited to the method shown in the above embodiment, and for example, the plate-shaped body tilted at an angle of less than 90 degrees is placed on a conventional pedestal with a horizontal lower surface. The plate-shaped body may be implanted by casting in one piece so that when it is placed in the recess of the jig, the plate-like body will be inclined. Alternatively, an inclined surface may be formed at one end of the bottom of the recess of the jig, and the inclined surface may be formed. Various methods can be adopted, such as arranging a pedestal on the plate so that the plate-like body is inclined.

As described above, according to the present invention, the work of storing the electrode plate group in the cell chamber of the battery case can be carried out extremely easily, and the workability thereof is improved, and the workability of forming the strap is also improved.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of the conventional method, Fig. 2 is a state diagram showing the operation of storing the electrode plate group into the cell chamber, Fig. 3 is a side view of the conventional intermediate pole column, and Fig. 4 is the embodiment of the present invention. FIG. 5 is an explanatory diagram of the method of the present invention; FIG. 6 is a state diagram showing the operation of storing the electrode plate group into the cell chamber; FIG. 7 is another embodiment of the present invention. FIG. 1... Jig, 2, 24... Plate group, 3, 25...
... Pole plate lug, 4 ... Recess, 5, 20 ... Intermediate pole column,
6, 26...Strap, 7, 21...Protrusion.

Claims (1)

[Claims] 1. The jig 1 includes a recess 4 that opens upward and the recess 4.
The tab 2 of the electrode plate is inserted into the recess 4 of the jig 1 through the through groove.
The intermediate pole column 20 consists of a base, a plate-shaped body implanted at the side end of the upper surface of the base, and a protrusion 21 protruding from the side surface of the plate-shaped body, An intermediate pole column in which the intermediate pole column 20 is inserted from above the opening of the recess 4 of the jig 1, the plate-like body of the intermediate pole column 20 is inclined, and the intermediate pole column is placed at one end in the recess 4. It consists of an insertion step, and a strap forming step of welding the ears 25 and the middle pole post 20 inserted into the recesses 4 to each other to form the strap 26. Each of the above steps includes the ear inserting step, the middle pole inserting A strap with an intermediate pole, in which the steps are performed in the order of the strap forming step, or the intermediate pole inserting step, the lug insertion step, and the strap forming step, or the ear inserting step and the intermediate pole inserting step are performed simultaneously and then the strap forming step. How to form. 2 It has a pedestal 22, a plate-like body 27, and a protruding part 21, the bottom surface 23 of the pedestal 22 is an inclined surface, and the protruding part 21 is formed on the side surface of the plate-like body 27, and the side end of the upper surface of the pedestal 22 An intermediate pole column characterized in that a plate-like body 27 is implanted in the middle pole column.