JPH0749725Y2 - Battery assembly terminal connection - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal connecting body of a battery pack for high current discharge.

[0002]

2. Description of the Related Art As shown in FIG. 2, a conventional terminal connecting body of the above-mentioned assembled battery comprises a plurality of hermetically sealed Ni-Cd storage batteries A arranged so that their opposite terminals are opposite to each other. One connection plate b made of a thin nickel plate is passed between the anode terminal surface of the battery at one end and the cathode terminal surface of the battery at the other end, which are lined up in the same icicle position, and spot welded at both ends. Further, another connecting plate b made of a thin nickel plate is laid on the upper surface of the connecting plate b, and both ends thereof are spot-welded to one end of the connecting plate b in the lower layer to carry a large current. The inter-battery connecting body B is provided, and a connecting plate b made of a thin nickel plate is spot-welded at one end to the cathode terminal of the battery A at one end facing the other direction, and another one is connected to the connecting plate b. Thin connecting plates b of the same material are stacked and one end thereof is connected to the connecting plate B of the lower layer. A cathode terminal connecting body C for taking out a large discharge current is provided by spot welding on one end, and a connecting plate b, b made of two nickel plates is similarly formed on the cathode terminal of the battery A on the other end as well. In order to form a battery pack by providing a cathode terminal connection body D for taking out a large discharge current, the lead wire E, on the upper surface of the negative and anode terminal connection bodies C and D at both ends of the battery pack is used. It is used by soldering F. × indicates spot welding.

[0003] In making the above-mentioned conventional terminal connecting bodies C and D of the assembled battery, it is general practice to sequentially spot-weld two connecting plates to the negative and positive terminals of the respective batteries A and A. . The reason is that if two connecting plates b, b are overlaid on the terminals of each battery and spot welded at once, a large spot current is required, which may cause inconvenience such as a hole in the battery lid. .

[0004]

In each terminal connection body C, D of the above-mentioned assembled battery for large current discharge, the two connection plates b, b are connected at one end to an anode terminal or a cathode terminal. However, since the current-carrying area is small, there is a disadvantage that the terminal connectors C and D generate heat when a large current flows during discharging. Then, the other end side of the two connecting plates of each of the terminal connecting bodies C and D was also spot-welded to each other to increase the energization area of the two connecting bodies. , D on the outer surface, that is, on the upper connecting plate, the lead wire E
It was confirmed that the solder paste became poor when it was tried to be soldered. Therefore, it is desired that the lead wire can be easily soldered to the terminal connection body of the assembled battery and that heat generation due to discharge of a large current can be prevented.

[0005]

DISCLOSURE OF THE INVENTION The present invention provides a terminal connecting body for an assembled battery which satisfies the above-mentioned needs, and has a structure of an assembled battery composed of a plurality of batteries. Spot welding one end of two thin connecting plates to each of the anode terminal and the cathode terminal of the battery at the other end,
In addition, the opposing surfaces of the other ends are connected by solder.

[0006]

SUMMARY OF Invention The present invention terminal connection member is therefor between the two superimposed connection plate and the other end surface facing are connected by soldering as a large area, if heat generation in the discharge of a large current is eliminated
Not only in the case, but when the lead wire is soldered on the upper surface, the solder paste is good, and good soldering can be performed.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the terminal connection body of the assembled battery of the present invention will be described with reference to the accompanying drawings. For convenience of explanation, an example in which two batteries are used as an assembled battery will be described.

FIG. 1 shows an embodiment thereof, and 1 shows a sealed nickel-cadmium storage battery. Two such batteries 1,
1. A thin connecting plate 2 made of a nickel plate is passed between the anode terminal of the battery 1 at one end and the cathode terminal of the battery 1 at the other end, with one of them facing each other and one of them facing in the same position. , Spot welding the respective battery terminals at both ends (marked with an X, the same applies below), stacking a connection plate 2 made of a thin nickel plate on top of it, and connecting both ends to the connection plate 2 below it. The intermediate connection body 3 was provided by spot welding. One end of a connection plate 2 made of a thin nickel plate is spot-welded to the cathode terminal of one end of the assembled battery facing the other side of the battery 1, and further, a connection plate 2 made of the same material is stacked thereon. One end thereof was spot-welded to one end of the connection plate 2 as the lower layer. According to the present invention, further, solder is poured from the other end side of the two connection plates 2, 2 which are stacked to each other to the opposing surfaces thereof, and the opposing surfaces of the other ends are connected by the solder 4. In that case, a relatively large area of soldering can be obtained. If you wish, solder a larger area,
It is preferable to perform soldering between substantially the entire opposing surfaces of the connection plates 2 and 2. Thus, the cathode terminal connection body 5 of the present invention was constructed.

Further, one end of a connection plate 2 made of a thin nickel plate is spot-welded to an anode terminal of the other end of the assembled battery facing the other side of the battery, and further, a connection plate 2 made of the same material is formed on the connection plate 2. , And one end thereof was spot-welded to one end of the connection plate 2 as the lower layer. Further, according to the present invention, these two
The pair of connection plates 2 and 2 are separated from each other from the other end side .
Flowing solder between facing surfaces, between the other end surface facing the solder 4
Connect with. Preferably, soldering is performed on substantially the entire opposing surfaces of the connection plates 2 and 2. Thus, the cathode terminal connection body 6 of the present invention was constructed.

Thus, the negative and positive electrode terminal connecting bodies 5 and 6 of the assembled battery of the present invention constructed as described above are soldered with lead wires 7 and 8 on their respective upper surfaces upon use thereof. Since the opposite surfaces of the other ends of the connection plates 2 and 2 of the connection bodies 5 and 6 that are stacked two by one are connected to each other by soldering 4 and 4, the solder paste to the respective upper surfaces thereof is provided . Good and good connection.

The negative and positive electrode terminal connection bodies 5 and 6 of the present invention
Even if a large current is discharged from the assembled battery equipped with, the two connecting plates 2 and 2 of each of the terminal connecting bodies 5 and 6 are
Since the relatively large area is soldered 4 between the facing surfaces , the terminal connecting bodies 5 and 6 do not generate heat during discharging,
Suitable for long term use.

[0012]

As described above, according to the present invention, in an assembled battery composed of a plurality of batteries, two sheets are thinly stacked on each of the anode terminal of the battery at one end and the cathode terminal of the battery at the other end. Spot weld one end of the connecting plate, and the other end
Since the terminal connecting body is formed by connecting the facing surfaces of the above with solder, not only the lead wire can be easily and satisfactorily soldered on the upper surface of the connection plate which is soldered to each other , but also a large discharge is generated during its use. The terminal connection body does not generate heat when a current is applied, and thus the terminal connection body can be used stably and satisfactorily.

[Brief description of drawings]

FIG. 1 is a side view of an example of implementation of a terminal connecting body of an assembled battery of the present invention.

FIG. 2 is a side view of a terminal connection body of a conventional assembled battery.

[Explanation of symbols] 1 battery 2 connection plate 4
Solder, soldering 5 Cathode terminal connection body 6 Anode terminal connection body

Claims (1)

[Scope of utility model registration request] 1. An assembled battery comprising a plurality of batteries,
A set formed by spot welding one end of two thin connecting plates to each of the anode terminal of the battery at one end and the cathode terminal of the battery at the other end, and connecting the facing surfaces at the other end with solder. Battery terminal connection.