JPH054687Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) The present invention relates to storage batteries for various vehicles.

(Prior Art) As shown in FIGS. 1 and 2, a cell indirection device in a conventional storage battery includes bipolar plate groups D, which are housed in cell chambers C on both sides of a partition wall B that partitions the inside of a battery case A.
A cathode strap G connects the negative and anode ear rows E and F of D, respectively, and is arranged in a line on both sides of the partition wall B.
and anode strap H, from which conductor base pieces I, I are connected, for example, by horizontally protruding inwardly, and to each base piece I, extending perpendicularly to its upper surface, the partition wall B is connected.
Resistance welding is performed by applying the tip P of a welding gun to the intercell connecting ears K, K, which are arranged close to each other on both sides of the partition wall B, through the through hole M provided in the partition wall B. They are connected to each other by such means. In the drawings, Q indicates a container lid, and R and R' indicate negative and anode terminals.

(Problems to be Solved by the Invention) According to the above-mentioned conventional cell-to-cell connection device, the cell-to-cell connection ears K, K extend upright on the upper surfaces of the base pieces I, I, and the ears K ,K facing the upper part of the partition wall B
Because of the configuration in which the through hole M is provided, for example, during gun welding, the tip of the welding gun P applied to the ears K, K may collide with the upper surface of the conductor base pieces I, I below. In order to prevent this, it is necessary to increase the height h of the ears K and K from the substrate I to the through hole M, and accordingly, the height to the upper edge of the partition wall B also increases, making it necessary to increase the height of the storage battery. This is accompanied by the inconvenience of an unavoidable increase in height.

(Means for Solving the Problems) The present invention solves the above-mentioned disadvantages of the device, and can reduce the height from the substrate to the through hole.
Therefore, the present invention provides an intercell connection device that can reduce the height of the partition wall and provide a storage battery with a relatively low height. Connect the anode ear rows respectively,
Further, conductor base pieces are connected to the cathode straps and anode straps that are arranged in a line on both sides of the partition wall by protruding laterally, and the inter-cell connection tabs connected to each of the base pieces are connected to the partition wall. In a storage battery that faces each other through a provided through hole and is connected to each other by resistance welding through the through hole, the welding gun does not hit the conductor base piece from the tip of the conductor base piece through the through hole of the partition wall. The two cell-to-cell connection tabs connected to the respective conductor base pieces are placed facing each other through the through-holes, and in this state, they are connected to each other through the through-holes. .

(Example) One row of the present invention will be explained based on FIGS. 3 to 6 of the accompanying drawings.

In the drawings, reference numeral 1 indicates a synthetic resin battery case, and the interior of the battery case 1 is divided into six cell chambers 3 by partition walls 2, each of which contains a group of electrode plates 4. On the upper surface of the electrode plate group 4 of each chamber 3, cathode lug rows 5 and anode lug rows 6 are arranged protrudingly on both sides alternately, and the respective lug rows 5 and 6 connect the respective lug rows to each other at their tips. and the cathode strap 7 and the anode strap 8
are arranged in a line on both sides of each partition wall 2, and the cathode straps 7 and anode straps 8, which oppose each other via each partition wall 2 in the middle, are connected between cells according to the present invention as described below. For convenience of explanation, the connection between the pair of cells will be described below.

That is, from the cathode straps 7 and the anode straps 8 on both sides of the partition wall 2, the conductor base pieces 9,
Connect 9. According to the present invention, the through hole 10 provided in the partition wall 2 is provided at a position shifted inward from the tip of each conductor base piece 9, and each conductor base piece 9
Then, plate-shaped intercell connecting ears 11, 11 were connected to each side of the partition wall 2 so as to be close to each other and stand up inwardly and upwardly so as to extend to the through hole 10 thereof. Thus, the two ear pieces 11, 11 facing each other on both sides through the through hole 10 of the partition wall 2,
For example, by applying the tip of a welding gun and applying pressure from the outside, welding them together by resistance welding in the through hole 10 using a conventional method, and attaching both the ear pieces 11, 11 to the circumferential surface of the partition wall 2 on the outer periphery of the through hole 10 in an air-liquid tight manner. It concludes to. Thus, according to the present invention, the welding gun does not hit the base pieces 9, 9 during welding, and the welding of the ear pieces 11, 11 can be performed smoothly and efficiently. or,
Further advantageously, the through hole 10 is formed in the base piece 9,
Since it is provided on the side of the base piece 9 rather than directly above it, the vertical distance between the through hole 10 and the base piece 9, that is, the height h, can be made small, and the height of the partition wall 2 can be configured to be lower than that in conventional devices. , a relatively short and compact storage battery can be created.

In the drawings, reference numeral 12 denotes a downward facing circumferential wall which is heat-sealed to the upper edge 1a of the circumferential wall of the battery case 1 and the upper edge 2a of each partition wall 2 by a conventional method on the upper surface of the battery case 1. 13 and partition walls 14 on the back surface, and a rectangular housing-shaped lid body having a flat top wall 15. usually,
Preferably, the conductor base piece 9 and the lug piece 11 are formed as a pair of molded members, as in the conventional case.

(Effect of the invention) According to the invention, when connecting the cathode and anode straps on both sides of the partition wall through the through-holes, the conductor base piece connected laterally to each strap is connected to the partition wall. A through hole is provided at a side position away from the tip of the base piece so that the welding gun does not hit the conductor base piece, and a lug piece for connection between both cells connected to each conductor base piece faces the through hole. Therefore, when connecting these two ear pieces with a welding gun through this through hole, the connecting tool does not hit the conductor base piece, allowing a smooth and good connection between the cells, and the position of the through hole can be adjusted as necessary. This has the effect of reducing the height of the partition wall and making it possible to create a short battery.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway plan view of a conventional storage battery, FIG. 2 is a sectional view taken along the line -- in FIG. Fig. 3 is a partially cutaway plan view of the storage battery, Fig. 4 is a sectional view taken along the - line of Fig. 3, and Fig. 5 is a - of Fig. 3.
6 shows a cross-sectional view taken along the line -- of FIG. 3. 1...Battery container, 2...Partition wall, 3...Cell chamber, 4...
... Electrode plate group, 7 ... Cathode strap, 8 ... Anode strap, 9 ... Conductor base piece, 10 ... Through hole, 1
1... Ledge piece for inter-cell connection, h... Vertical distance and height between the base piece and the through hole.

Claims (1)

[Scope of utility model registration request] Connect the negative and anode ear rows of the bipolar plate groups housed in the cell chambers on both sides of the partition wall that partitions the inside of the battery case, respectively, and connect the cathode strap and anode strap that are arranged in a line on both sides of the partition wall. The conductor base pieces are connected to each other by protruding laterally, and the inter-cell connecting ears connected to each base piece are made to face each other through a through hole provided in the partition wall, and are connected to each other through the through hole by resistance welding. In the connected storage battery, the through hole in the partition wall is provided at a position that is removed from the tip of the conductor base piece to the side so that the welding gun does not hit the conductor base piece, and both A storage battery in which the inter-cell connection tabs are made to face each other through the through-hole, and are connected to each other through the through-hole in this state.