JPS59217942A - Manufacturing method for storage battery - Google Patents

Abstract

PURPOSE:To prevent the generation of liquid shortcircuit by thermally depositing and integrating a container and a cover using a heat plate body on which a guide body made of heat-resistant synthetic resin is mounted, to be used for fitting an expected part of thermal deposition of a container on the surface of the heat plate body that faces to said expected part of thermal deposition of the container. CONSTITUTION:A heat plate 4 for a cover that melts the expect part 3a of thermal deposition, the cover 3 is mounted on top of a heat plate 1 made of iron that builts in a heater 2. A guide body 6 made of heat-resistant synthetic resin in which a tapered groove 6a used for fitting the upper part 5a of the container partition wall and the upper part 5b of an outer wall to become the expected parts of thermal deposition of the container is mounted on the bottom. After the heat plate 1 is inserted between the container 5 that houses an assembled element and the cover 3, the upper parts 5a and 5b are fit in the groove 6a and the upper parts 5a and 5b are melted. On the other hand, after the part 3a is melted, the heat plate 1 is removed and the expected part 3a of thermal deposition and the upper parts 5a and 5b are deposited and integrated. As a result, a storage battery can accurately be thermally deposited and integrated and the generation of liquid shortcircuit can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a storage battery manufacturing method in which a battery case and a lid are integrated by thermal welding using a hot plate.

Conventionally, the hot plate used in this type of manufacturing method has a flat surface where it touches the battery case partition wall, and when pressure is applied to this surface and thermal melting is performed, the partition wall melts due to the heat and pressure, causing the partition wall to bend. However, when bonded to the lid, the welded surface may be misaligned, resulting in poor airtightness, which may cause a liquid junction, and the battery cannot function as a battery.

The present invention eliminates the above drawbacks.

In order to achieve the above object, the present invention provides a storage battery manufacturing method in which a battery case and a lid are integrated by thermal welding by melting the welding portions of both using a hot plate, and in which the hot plate faces the side of the battery case where the welding portion is to be welded. This is a storage battery manufacturing method that integrates the battery case welding and welding on the surface.

One embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 denotes an iron hot plate with a built-in heater 2, a lid hot plate 4 for melting the welding portion 3a of the lid 3 is attached to the upper surface, and a lower surface As shown in FIGS. 5 and 6, the upper surface dimensions of the battery case 5 are IU, and the tapered groove 6a is used to fit the battery case partition wall upper part 5a and the battery case outer wall upper part 5b, which are the tank welding parts.
In this example, a kite body 6 made of heat-resistant resin such as polytetrafluoroethylene resin is attached. The bottom surface 6a-1 of the tapered groove 6a is made thin in order to conduct heat from the hot plate 1.

As shown in Figure 1, the battery case 5 and M that house the electrode plates are
After inserting the heating plate 1 between the parts 3 and 3, as shown in FIG. On the other hand, it is brought into a molten state by the heat of the plate 1.

The portion 3a of the lid 3 to be welded is melted with the hot plate 4 for the lid, and then the hot plate 1 is removed and the portions 3a and 5a of the lid 3 and the battery case 5 to be welded are melted.

5b are welded and integrated. Even if the welding parts sa and sb of the battery case 5 are to be deformed when the parts sa and sb are melted, the deformation is prevented by the Dever groove 6a of the guide body 6, and the battery case 5 and the lid 3 are fixed as shown in FIG. As shown, the welded surfaces are reliably integrated by heat welding without shifting. In addition, in FIG. 3 1, 7 is a welded part between the part 3a to be welded and the parts 5a and 5b.

As described above, according to the present invention, thermal welding is carried out without any misalignment of the welding surfaces during thermal welding of the battery case and the lid, and therefore, there is no possibility of causing a liquid junction. It has great industrial value.

[Brief explanation of drawings]

The first factor is a state diagram in which a hot plate is inserted between the electric phase and the lid according to one embodiment of the present invention [61], and FIG. 2 is the same [. Fig. 3 shows the melting state of the parts to be welded on the battery case and the lid. Fig. 3 is the same (a cross-sectional view of the main part of the completed battery, Fig. 4 is a cross-sectional view of the guide body in Fig. 1). l is the hot plate, 3 is the lid, 3a is the part to be welded, 4 is the heating plate for the lid, 5 is the battery case. 5a is the electric grid/partition top, 5b is the stamping! The top of the outer wall. 6 is the kite rest, 6a is the taper dq. Patent applicant's Fig. 4

Claims (1)

[Claims] In a storage battery manufacturing method in which a battery case and a lid are integrated by thermally welding the parts to be welded together using a hot plate, the part to be welded to the battery case is fitted onto the surface of the hot plate facing the part to be welded to the battery case. A storage battery manufacturing method characterized in that a battery case and a lid are integrated by thermal welding using a hot plate body to which a guide body of heat-resistant synthetic resin is attached for insertion.