JPH06101324B2 - Lead acid battery and manufacturing method thereof - Google Patents

Description

TECHNICAL FIELD The present invention relates to a lead storage battery and a method for manufacturing the same.

2. Description of the Related Art Conventionally, in a so-called monoblock lead acid battery in which a plurality of cell chambers are formed in one battery case and cells (electrode groups) are housed in each cell chamber, an electrode group is housed in each cell chamber. The electrodes of the same polarity are connected in parallel in the same cell chamber, the electrodes of different polarity are connected to adjacent cells across the cell partition wall, and the electrode groups in both ends of the cell chamber are fixed to the outer surface of the battery case side wall. It is necessary to make connections between positive and negative battery terminal plates, and many methods have been proposed in the past. However, in both methods, the connection part is made mainly of alloy, and especially the connection between the battery terminal plate of the battery case and the battery output end is performed by parallel connection of the same polarity electrode plates in the same cell chamber and cell partition. After the series connection of the different polar plates with the adjacent cells across the wall is completed, the connections are made using a lead alloy using a soldering iron or the like. Therefore, the weight of the battery becomes heavy, and it is difficult to control the temperature of the soldering iron and maintain the accuracy of soldering, and it is difficult to achieve uniform quality and weight reduction, and the work is a separate process. It had a drawback that it lacked in productivity.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention The present invention is, in the production of the above-described conventional lead-acid battery, parallel connection of polar plates of the same polarity in the same cell chamber, and series connection of polar plates of different polarities between adjacent cells, or a battery case. A new lead storage battery that solves the problem that the battery terminal plate and the electrode group are connected using a lead alloy, which makes it difficult to maintain the accuracy of the product and hinders uniform quality and weight reduction. , And its purpose is to provide a manufacturing method thereof.

Means for Solving the Problems In order to solve the above-mentioned problems, the lead-acid battery of the present invention has a plurality of positive and negative electrode plates provided with ears in each cell chamber arranged in a row in a battery case. The electrode ears of the electrode group consisting of are parallel to the cell chamber partition wall or the side wall of the battery case parallel to the cell chamber partition wall in a line, and the ears upper end is above the upper end of the wall. Is connected to the upper end of the electrode plate ears of different polarity adjacent to the center of the upper wall of the wall and adjacent to the cell chamber partition wall by the same type of metal plate for connection, and the side wall of the battery case. The difference between the upper end portion of the electrode plate ear portion adjacent to the upper side and the upper end portion of the battery terminal plate fixed to the outer surface of the battery case side wall is different from or the same as the connecting metal plate. When connected, these connecting metal plates are arranged in a line.

In addition, parallel connection of the electrode groups housed in advance in the cell chamber and series connection between adjacent cells, or connection between the electrode group and the battery terminal plate fixed to the outer surface of the side wall of the battery case is performed by using a connecting metal plate. The objects are easily achieved by constructing the above battery by connecting in several steps.

Action The present invention achieves weight reduction and size reduction of the cell chamber and inter-cell connection of the electrode group by the above configuration,
Since the battery terminal board can be connected at the same time, the manufacturing process can be shortened and the quality can be made uniform.

Embodiment FIG. 1 shows an embodiment of the present invention. FIG. 1 (a) is a left side view of a lead storage battery according to the present invention, (b) is a partial sectional view of the front, and (c) is a right side view. FIG. 2 is a cross-sectional view, and FIG. 2 is a perspective view showing the lead-acid battery with the battery case lid removed, in which two positive electrode plates and three negative electrode plates are used with a separator interposed therebetween. A storage battery with a voltage of 12V and a nominal capacity of 2AH is formed by six electrode groups.

S ₁ to S ₆ are cell chambers, 1 is a positive electrode plate that constitutes an electrode group, 2 is also a negative electrode plate, and the lattice body of each main component is formed of a Pb-Ca-Sn alloy, Each has ear portions 1'and 2'and protrudes upward from the electrode plate portion. Three
Is a separator, and 4 is a battery terminal plate in which brass is plated with Sn (tin). The ears 1 ′, 2 ′ of the positive electrode plate 1 and the negative electrode plate 2 of each cell chamber of S ₂ to S ₅ are arranged in parallel with the cell chamber partition wall, and the upper ends of the ears are located above the upper end of the partition wall. The metal plates 5 ₁ to 5 ₅ are connected between the upper ends of the electrode plate ear portions of different polarities, which project and project toward the center of the upper end of the wall and which are adjacent to each other above the cell chamber partition wall. Further, in the cell chambers of S ₁ and S ₆ at both ends, the pole ears of one pole protruding above the side wall of the battery case and the outer surface of the side wall of the battery case are fixed, and the upper end is above the side wall of the battery case. The protruding battery terminal plate 4 is connected by a connecting metal plate ₅₀ or 5 ₆ .

By connecting as described above, the electrode groups of the cell chambers S ₁ to S ₆ are electrically connected in series, and as described above.
It constitutes a 12V lead-acid battery. In addition, the connecting metal plate ₅₀
Nos. 5 to ₆ are SPCC (cold rolled steel plates) plated with Sn.

A method of manufacturing such a lead-acid battery includes a positive electrode plate 1 and a negative electrode plate 2.
An electrode group consisting of the separator 3 and the separator 3 is formed, and each electrode group is inserted into each cell chamber S ₁ to S ₆ of the battery case 6 made of ABS resin (acrylonitrile-butadiene-styrene resin) as shown in the figure. Then, the dimensions of the ears 1 ', 2'and the battery terminal plate 4 are trimmed. Thereafter, the battery case 6 including the electrode group is inverted so that the ears 1'and 2'are directed downward. Then, the connecting metal plates 5 ₀ to contact via solder 7 5 _6, then the solder is melted by heating by high frequency induction from the surrounding metal for connecting an electrode plate of the ear portion 1 ', 2' Connect to plates 5 ₁ to 5 ₅ and connect S ₁ and S _{6 at} both ends.
By connecting with the electrode plate ear portion of one electrode of the cell compartment and the battery terminal plate 4 and the connecting metal plate 5 _0, 5 _6, lead-acid battery of the present invention is produced. That is, according to the present invention, polar series connection of the electrode plates between the cells and connection with the battery terminal plate can be performed once.

EFFECTS OF THE INVENTION According to the present invention described above, the space volume for connecting the ears required for the inter-cell connection can be reduced, and therefore the lead storage battery can be downsized, and the cell chambers between the cells and both ends thereof can be reduced. Since the electrode group and the battery terminal plate are connected at the same time, the number of manufacturing steps can be reduced, and since it is performed by inverting the battery case, a small foreign matter does not fall into the cell chamber. Greatly contributes to the improvement of quality and quality.

[Brief description of drawings]

FIG. 1 is a left side view (a), a partial front sectional view (b), and a right side sectional view (c) of a battery according to an embodiment of the present invention, and FIG. It is a perspective view which removes and shows a battery case cover part. 1 ... Positive electrode plate, 2 ... Negative electrode plate, 3 ... Separator, 4 ...
… Battery terminal plate, 5 ₀ to 5 ₆ …… Metal plate for connection, ₆ …… Battery case, 7 …… Solder, S ₁ to S ₆ …… Cell chamber.

Claims (2)

[Claims] 1. An electrode group comprising a plurality of positive and negative electrode plates each having an ear portion is housed in each cell chamber of a battery case having a plurality of cell chambers in a row, and the cell chamber A lead storage battery having a battery terminal plate whose upper end protrudes above the upper end of the battery case side wall is fixed to the outer surface of the battery case side wall parallel to the partition wall, and a plurality of electrode groups housed in each of the cell chambers. The ears of the same polarity electrode plates are arranged in a row in parallel with the cell chamber partition wall or the side wall of the battery case parallel to this partition wall, and the ears upper ends project upward from the upper ends of the walls. Connected to the center of the upper end of the wall by the same type of connecting metal plate between the upper ends of the different polarity electrode plate ears that are adjacent above the cell chamber partition wall and adjacent above the side wall of the battery case. The metal plate for connection is provided between the upper end portion of the matching electrode plate ear and the upper end portion of the battery terminal plate. Different or identical connected by connecting the metal plate, a lead-acid battery of these consolidated metal plate which are arranged in a row state. 2. An electrode group comprising a plurality of positive and negative electrode plates each having an ear portion is provided in each cell chamber of a battery case having a plurality of cell chambers in a row. The ears of the same polarity electrode plate are aligned in parallel with the cell chamber partition wall in a row, and the process of accommodating the ears so that the upper ends of the ears project above the upper end of the wall, and the parallel electrodes to the cell chamber partition wall are stored. The battery terminal plate is fixed to the outer surface of the tank side wall so that the upper end of the battery terminal plate protrudes above the upper end of the battery case side wall, and the upper end portion of the electrode plate ear protruding from the upper end of the cell chamber partition wall is electrically charged. After inverting the tank and turning it downward, the upper ends of the opposite-polarity electrode plate ears that are adjacent to each other through the cell chamber partition wall are brought into contact with the solder provided on the connecting metal plate that is arranged opposite to this, and this By connecting the electrode ears of different polarities with the same type of connecting metal plate by high frequency induction heating In addition, in the cell chambers at both ends, the upper end portion of the ear portion of one electrode group located on the side of the battery case side wall is connected to the upper end portion of the adjacent battery terminal plate via the battery case side wall by the connecting metal plate. A method of manufacturing a lead storage battery, which comprises a step of connecting cells in series.