JPH088094B2 - High temperature battery equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a high temperature battery device capable of firmly and simply establishing electrical connection between electrodes of a single battery and between electrodes and an interconnection.

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

However, in the conventional series connection of the electrodes of the unit cells or parallel connection of the unit electrodes and the current-drawing conductor called interconnection, the method of connecting the lead wires drawn out from each electrode is adopted. Therefore, there is a problem that connection wiring becomes complicated and erroneous wiring may occur, and it takes time and effort to connect the wiring, resulting in poor work efficiency. Also, since the lead wire is long, the electric resistance is large and the capacity is reduced. There was a problem that was the cause.

(Problems to be Solved by the Invention) The present invention solves the above-mentioned conventional problems, and makes it possible to easily connect electrodes of an individual battery or electrodes and interconnections with each other, and also has high connection strength. The present invention has been completed with the object of providing a high-temperature battery device which can be manufactured and which does not cause a capacity reduction due to a low wiring resistance.

(Means for Solving the Problems) The present invention made in order to solve the above problems is a plate-shaped electrode in which electrodes of a large number of single cells arranged and housed in a heat insulating container are used as plate-shaped electrodes. A high temperature battery device is characterized in that the contact piece with the plate-like electrode is connected with a metal fitting having a U-shaped cross section at both ends.
According to the present invention, the electrodes of a large number of unit cells arranged and housed in a heat-insulating container are used as plate-shaped electrodes, and the required contact between the plate-shaped electrode and the interconnection is at both ends. A second aspect of the present invention is a high-temperature battery device characterized in that the high-temperature battery device is characterized in that it is connected with a connecting metal fitting having a U-shaped cross section that is bent and formed.

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

In the figure, (1) is a heat-insulating container in which a large number of sodium-sulfur cell (2) are arranged and housed.
Is a plate-shaped plate of the adjacent cells (2) and (2) which are housed in the heat-insulating container (1) so that the positive and negative plate-shaped electrodes (3) protruding from the upper surface are on the upper side. The electrodes (3), (3) and the required electrode (3) and the interconnection (4) which is a current lead wire have contact pieces (5a), (5a) corresponding to the plate-like electrode (3) at both ends. The section formed by bending is electrically connected by a U-shaped connecting fitting (5). The arrangement of the unit cells (2) in the embodiment is such that three unit cells (2) are connected in series, the series groups are arranged in six columns in parallel, and the battery groups connected by the interconnection (4) are one block body. And is arranged and housed in a plurality of heat insulating containers (1) of such a block body.
The contact piece (5a) of the connecting fitting (5) is simply and firmly connected to each plate-shaped electrode (3) by spot welding, bolting, or the like, and particularly, the plate-shaped electrode (3). The connection metal fitting (5) is attached at an angle to the interconnection (4) so as to absorb the thermal expansion of the interconnection (4) during the use of the battery device. There is.

(Operation) In the structure configured as described above, the plate-like electrodes (3) and (3) of the unit cell (2) and the electrical connection between the plate-like electrode (3) and the interconnection (4). The connection is performed by interposing a connecting piece (5) having a U-shaped cross section in which contact pieces (5a) in close contact with the plate-like electrode (3) and the interconnection (4) are bent and formed at both ends. Therefore, the wiring is simpler than the conventional connection by a lead wire or the like, the possibility of forming the wiring is eliminated, and the wiring resistance is reduced because the connection is made in a short distance.
Further, the plate piece electrode (3) and the contact piece (5a) or the plate piece electrode (3) and the interconnection (4) can be connected by spot welding, bolting, etc. Not only can this be done efficiently, but the connection strength will also be greatly improved. Further, the connection between the plate-shaped electrode (3) and the interconnection (4) is angled so that the connecting metal fitting (5) is not the shortest distance with respect to the interconnection (4) as in the embodiment. If it is installed with the connection metal fittings (5) absorbing the extension of the interconnection (4) even if the interconnection (4) thermally expands during operation at high temperature, This will surely prevent the occurrence of breakage in the part.

(Effects of the Invention) As is apparent from the above description, the present invention uses the electrode of a large number of cells arranged and housed in a heat insulating container as a plate-shaped electrode and has contact pieces bent and formed at both ends. By using a metal fitting with a U-shaped cross section, the required electrodes can be connected to each other or the electrodes and the interconnections can be connected very easily and efficiently without miswiring, and the joint strength is also high. There are many advantages such as capacity reduction due to resistance can be prevented as much as possible.

Therefore, the present invention is extremely high in that it contributes to industrial development as a high-temperature battery device that eliminates the conventional problems.

[Brief description of drawings]

FIG. 1 is a plan view of an essential part showing an embodiment of the present invention, and FIG. 2 is a side view of the same. (1): Insulating container, (2): Single cell, (3): Plate-shaped electrode, (4): Interconnection, (5): Metal fitting for connection, (5a): Contact piece.

Claims (2)

[Claims] 1. A plate piece electrode (3) comprising a plurality of unit cell electrodes arranged and housed in a heat insulating container (1), said plate piece being provided between required plate piece electrodes (3), (3). A high temperature battery device, characterized in that contact pieces (5a), (5a) for contacting with the electrode (3) are connected by connecting metal fittings (5) having U-shaped cross sections which are bent at both ends. 2. A plurality of unit cell electrodes arranged and housed in a heat-insulating container (1) are used as plate-shaped electrodes (3), and the space between the required plate-shaped electrodes (3) and the interconnection (4) is used. Characterized in that the contact pieces (5a) and (5a) between the plate-shaped electrode (3) and the interconnection (4) are connected by a connecting metal fitting (5) having a U-shaped cross section that is bent and formed at both ends. High temperature battery device.