JPH0538765U - Battery pack - Google Patents

Abstract

(57) [Summary] [Objective] To provide an assembled battery in which the number of parts is reduced and terminals can be connected efficiently and securely. [Structure] A plurality of unit cells 6 are stacked and terminals 8 or 9 of the same polarity of these unit cells 6 are provided with grooves 10 or 11 aligned in the stacking direction. The terminals 8 or 9 having the same polarity are electrically and mechanically connected by a conductive connecting material 12 or 13 such as solder filled in the grooves 10 or 11.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an assembled battery in which terminals of the same polarity of stacked cells are electrically and mechanically connected in a stacked state.

[0002]

[Prior Art]

 In the conventional battery pack of this type, a plurality of cells are stacked, and homopolar terminals of the same length of each cell are stacked and electrically and mechanically connected by a connecting plate or a connecting cord. It was Such an assembled battery is housed in a sealed battery case to form a sealed lead acid battery.

[0003]

[Problems to be solved by the device]

 However, if a connection plate or the like is used to connect the terminals, the connection can be easily and surely made, but this increases the number of parts and is not preferable for battery production. Further, as batteries become smaller and thinner, the terminals and the spaces between the terminals also become smaller, and the workability of connecting the terminals deteriorates. Furthermore, it is difficult to put the metal bar on the linear terminal, and when the metal bar is put on the terminal, there is a risk of accidentally putting the metal bar on the terminal of another cell and soldering it. There is a risk of short-circuiting.

An object of the present invention is to provide an assembled battery in which the number of parts can be reduced and terminals can be connected efficiently and reliably.

[0005]

[Means for Solving the Problems]

 To explain the configuration of the present invention that achieves the above object, the present invention is a set in which a plurality of cells are stacked and terminals of the same polarity of each cell are electrically and mechanically connected in a stacked state. In the battery, grooves of the same polarity are aligned in the stacking direction, and the terminals of the same polarity are electrically and mechanically connected by a conductive connecting material filled in the grooves. This is characterized.

[0006]

[Action]

 In this way, if grooves are aligned in the stacking direction on each terminal of the same polarity, and each groove is filled with a conductive connecting material to make electrical and mechanical connections, parts such as connecting plates become unnecessary, and the number of parts is reduced. Can be reduced. Further, by filling each groove with a conductive connecting material for connection, the terminals can be efficiently and reliably connected even if the battery is made small and thin.

[0007]

【Example】

 1 to 3 show a first embodiment of an assembled battery according to the present invention. As shown in the figure, in the assembled battery of this embodiment, a laminate of the positive electrode plate 1, the separator 2 and the negative electrode plate 3 is housed in a film battery case 4, and the inlet of the film battery container 4 is sealed with a sealing molded product 5. It has a unit cell 6 configured as described above. The sealing molded product 5 is provided with a safety valve 7 which operates when the pressure of the film battery case 4 rises. The positive electrode plate 1 is provided with a positive electrode terminal 8 and the negative electrode plate 3 is provided with a negative electrode terminal 9, which penetrates the sealing molded product 5 in an airtight manner and is led out to the outside. A plurality of such assembled batteries 6 are stacked.

The terminals 8 and 9 of these unit cells 6 are of the same polarity and are laminated on each other. Grooves 10 and 11 are provided in alignment in the stacking direction on the side surfaces of the terminals 8 or 9 of the same polarity in the longitudinal direction.

The terminals 8 or 9 of the same polarity are electrically and mechanically connected by the conductive connecting members 12 and 13 such as solder and conductive adhesive filled in the grooves 10 and 11.

1 to 3 show a second embodiment of an assembled battery according to the present invention. As shown in the figure, the assembled battery of this embodiment is different from the first embodiment in that the grooves 10 and 11 are provided at the ends of the terminals 8 and 9 in the longitudinal direction. The other points are similar to those of the first embodiment.

[0011]

EFFECT OF THE INVENTION The battery pack according to the present invention as described above is provided with the grooves of the same polarity in the stacking direction, and each groove is filled with the conductive connecting material to electrically and mechanically. Since the connections are made, parts such as a connecting plate are not required, the number of parts can be reduced, and the cost can be reduced. In addition, by filling each groove with a conductive connecting material for connection, even if the battery is made smaller and thinner, the connection between terminals can be made efficiently and reliably.

[Brief description of drawings]

FIG. 1 is a perspective view of a first embodiment of an assembled battery according to the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a front view of the unit cell used in the first embodiment.

FIG. 4 is a front view of a unit cell used in a second embodiment.

FIG. 5 is a perspective view of a second embodiment of an assembled battery according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Positive electrode plate, 2 ... Separator, 3 ... Negative electrode plate, 4 ... Film battery case, 5 ... Sealing molded product, 6 ... Single cell, 7 ... Safety valve, 8
... Positive electrode terminal, 9 ... Negative electrode terminal, 10, 11 ... Groove portion, 12,
13 ... Conductive connecting material.

Claims (1)

[Scope of utility model registration request] 1. An assembled battery in which a plurality of unit cells are stacked, and terminals of the same polarity of each unit cell are electrically and mechanically connected in a stacked state, wherein the terminals of the same polarity have a stacking direction. The battery pack is characterized in that the groove portions are aligned with each other, and the terminals of the same polarity are electrically and mechanically connected by the conductive connecting material filled in the grooves.