JPH04147565A - High-temperature battery device - Google Patents

Abstract

PURPOSE:To perform easy connection between both electrodes or between the electrode and an interconnection, enhance connecting strength and still reduce wiring resistance by forming the electrodes as plate electrodes for connection between the plate electrodes with connection fittings U-shaped in cross section which have contact pieces bent at both ends. CONSTITUTION:Cells 2 are housed in an insulated container 1 with positive and negative plate electrodes 3, protruded from the upper faces, located upward, and the plate electrodes 3, 3 of the adjacent cells 2, 2 as well as the electrode 3 and an interconnection 4 as a current extension line are electrically connected with connection fittings 5 U-shaped in cross section which have the contact pieces 5a, 5a, corresponding to the plate electrode 3, bent at both ends. For the connection between the plate electrode 3 and the interconnection 4, an angle is provided to absorb the thermal expansion of the interconnection 4 during using.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a high-temperature battery device that can firmly and simply make electrical connections between electrodes of single cells and between electrodes and interconnections. .

(Prior art) A high-temperature battery device is a device in which a large number of cells, such as sodium-sulfur cells, are arranged in an insulated container kept at a high temperature of about 300 to 350°C, and can generate a large amount of electric power. It is attracting attention as a battery device that can be stored. The plurality of single cells are combined and electrically connected in series or in parallel in various patterns based on specifications corresponding to the capacity and purpose of use of the battery device.

However, in the conventional series connection of the electrodes of a single cell or the parallel connection of the electrodes of a single cell and a current drawing conductor called an interconnection, a method is adopted in which the lead wires drawn out from each electrode are connected. The connection wiring is complicated, which may cause incorrect wiring, and the wiring is time-consuming and reduces work efficiency.Also, the long lead wires have high electrical resistance, which can lead to a decrease in capacity. There was a problem with this being a contributing factor.

(Problems to be Solved by the Invention) The present invention solves the above-mentioned conventional problems, and makes it possible to easily connect the electrodes of single cells or between the electrodes and the interconnection, and to achieve high connection strength. This was completed with the aim of providing a high-temperature battery device that can be used in a high-temperature battery, and that also has low wiring resistance and does not cause a decrease in capacity.

(Means for Solving the Problems) The present invention, which has been developed to solve the above-mentioned problems, uses the electrodes of a large number of single cells arranged and housed in a heat insulating container as plate-shaped electrodes. A first aspect of the present invention provides a high-temperature battery device characterized in that the electrodes are connected by a connection fitting having a U-shaped cross section and a contact piece with the plate-shaped electrode being bent at both ends.
In this invention, the electrodes of a large number of single cells arranged and housed in a heat insulating container are used as plate-shaped electrodes, and contact pieces between the plate-shaped electrode and the interconnection are connected at both ends between the required plate-shaped electrode and the interconnection. A second invention provides a high-temperature battery device characterized in that the high-temperature battery device is connected using a connecting metal fitting having a U-shaped cross section and bent at the top.

(Example) Next, the present invention will be described in detail with reference to the illustrated embodiments.

In the figure, (1) is a large number of sodium-sulfur cells (2)
The cells (2) are housed in the heat insulating container (1) with the positive and negative plate-shaped electrodes (3) protruding from the top facing upward. The plate-like electrodes (3) of the adjacent cells (2), (2), (3) comrades and required electric currents 8i (3) and the interconnection (4), which is a current lead wire, are connected to the plate-like electrodes (3). The contact pieces (5a), (5a) corresponding to 3) have bent cross sections at both ends and are electrically connected by a U-shaped connection fitting (5). Single cell in the example (
In the arrangement 2), three cells (2) are connected in series, and the series groups are arranged in six rows in parallel, and the battery groups connected by interconnection (4) are configured as one block. A plurality of blocks are arranged and stored in a heat insulating container (1), and
The contact piece (5a) of the connection fitting (5) is easily and firmly connected to each plate-shaped electrode (3) by spot welding or bolt tightening, and in particular, the plate-shaped electrode (3) In connection with the interconnection (4), the connection fitting (5) is attached at an angle to the interconnection (4) so as to absorb thermal expansion of the interconnection (4) during use of the battery device. There is.

(Function) In the device configured as above, the cell (2)
plate-shaped electrode (3), (3) comrades and plate-shaped electrode (3)
) and the interconnection (4) are connected in a U-shaped cross-section with a contact piece (5a) in close contact with the plate-shaped electrode (3) and the interconnection (4) bent at both ends. Since this is done by interposing the metal fitting (5), the wiring is simpler than the conventional connection using lead wires, etc., there is no risk of erroneous wiring, and the wiring resistance is reduced because the connection is made over a short distance. In addition, the connection between the plate-shaped electrode (3) and the contact piece (5a) or the plate-shaped electrode (3) and the interconnection (4) can be made by spot welding, bolt tightening, etc. Not only can this be done efficiently, but the connection strength can also be greatly improved. Furthermore, plate-like electrodes (3
) and the interconnection (4), as in the example, so that the connection fitting (5) is not attached at the shortest distance to the interconnection (4), but at an angle to allow a margin. For example, even if the interconnection (4) expands thermally during operation at high temperatures, the connecting fitting (5) will absorb the extended bone of the interconnection (4), thereby reliably preventing damage to the connection part. I will do it.

(Effects of the Invention) As is clear from the above description, the present invention uses a plate-like electrode as the electrode of a large number of cells arranged and housed in a heat insulating container, and a contact piece is bent at both ends. By simply using a connection wire with a U-shaped cross section, it is possible to connect the desired electrodes or electrodes and interconnections extremely easily and efficiently without wiring errors, and the bonding strength is high. There are many advantages such as being able to prevent capacitance reduction due to wiring resistance as much as possible.

Therefore, the present invention greatly contributes to the development of industry as a high-temperature battery device that eliminates the problems of the conventional technology.

[Brief explanation of drawings]

FIG. 1 is a plan view of essential parts showing an embodiment of the present invention, and FIG. 2 is a side view of the same. (1): Heat insulating container, (2): Cell, (3): Plate electrode, (4): Interconnection, (5): Connection fitting 1, (5a): Contact piece.

Claims (1)

[Claims] 1. The electrodes of a large number of single cells arranged and housed in a heat insulating container (1) are used as plate-like electrodes (3) to form the required plate-like electrodes (3).
) and (3) is a contact piece (5a) with the plate-shaped electrode (3).
, (5a) are connected by connecting fittings (5) having a U-shaped cross section and bent at both ends. 2. The electrodes of a large number of single cells arranged and housed in a heat insulating container (1) are used as plate-like electrodes (3) to form the required plate-like electrodes (3).
) and the interconnection (4).
) and a contact piece (5a) between the interconnection (4),
A high-temperature battery device characterized in that (5a) is connected by a connection fitting (5) having a U-shaped cross section and bent at both ends.