JPH0129022B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention uses a plurality of batteries to eliminate the adverse effects on electronic equipment etc. caused by variations in battery terminal voltage during startup at low temperatures. The present invention relates to an effective in-vehicle multi-power battery that can solve the problem.

[Conventional technology]

When starting an engine at low temperatures, the battery terminal voltage drops significantly due to the reduced capacity of the battery and the large current flowing to the starter. Recently, many electronic devices, particularly microprocessors, are used for various controls and processes in automobiles, and voltage fluctuations at the time of starting can have an adverse effect on these devices, such as malfunction.

In contrast, in the past, it was decided to strengthen the voltage stabilizing circuit of the desired device and supply the necessary voltage to prevent malfunction or adverse effects on the device even under the worst conditions.

[Problem to be solved by the invention]

However, it is thought that more and more electronic devices will be installed in automobiles in the future, and the load on batteries will increase accordingly, requiring more and more stable power supply circuits, which will lead to an increase in costs. In addition, since the battery voltage is stable during normal engine operation,
Strengthening the power supply circuit of equipment is not efficient.

SUMMARY OF THE INVENTION An object of the present invention is to provide an in-vehicle multi-power battery that can satisfactorily solve the above-mentioned problems.

[Means to solve the problem]

That is, the present invention advantageously supplies voltage to the starter and desired equipment from separate batteries in order to prevent fluctuations in battery voltage caused by the rotation of the starter motor during startup from adversely affecting electronic equipment. Two or more batteries with different capacities that can be used independently are built into one battery case, and a common grounding terminal is provided, thereby providing a multi-terminal type battery that is advantageous when wiring.

Embodiment The present invention will be described below with reference to an embodiment shown in the drawings. FIG. 1 is a schematic diagram of the structure of a three-terminal dual-power battery according to the present invention, and FIG. 2 is a schematic diagram of its external shape. Conventionally, in the case of a 12V battery, 12V is obtained by connecting six pairs of electrodes inserted in each cell in series, but in the example in Figure 1, Case 1 has a total of 12V. cells 21~
26, 31-36, the upper six cells 21-26 in FIG. 1 constitute one set, and the lower six cells 31-36
36 becomes one set, and two sets of 12V voltage are obtained.

Here, the six cells 21 to 26 on the upper side all have a smaller volume than the six cells 31 to 36 on the lower side. In other words, the six smaller cells 21 to 26 form one set on the small capacity side, and the six larger cells 31 to 36 form one set on the large capacity side, making it possible to take out 12V voltages of different capacities from two sides. It is. Each cell 21-3
6, 31 to 36 include a pair of electrodes 2a, 2b constituting a storage battery for extracting electrical energy.
and 3a, 3b are provided. The six smaller pairs of electrode plates 2a, 2b are connected in series between the upper cells, and the outermost electrode of one of the six pairs of electrode plates 2a, 2b is connected to the case 1. An output terminal A led out to the outside is connected. On the other hand, the six larger pairs of electrode plates 3a, 3b
are also connected in series between the cells on the lower side, and are further connected to the extreme pole of one of the six pairs of electrode plates 3a and 3b, as shown in FIG. Output terminal B shown is connected.

The common terminal C, like the two output terminals A and B, is led out to the outside of the case 1. This common terminal C
is the other extreme electrode of the set consisting of the six pairs of electrode plates 2a and 2b arranged in the cells 21 to 26 with small capacity, and the six pairs of electrode plates arranged in the cells 31 to 36 with large capacity. It is connected to both the other extreme pole of the group consisting of 3a and 3b.

That is, the two output terminals A and B are connected to the upper six pairs of electrode plates 2a and 2b and the lower six pairs of electrode plates 3, respectively.
It is possible to take out the voltage more independently from the electrodes a and 3b, and the common terminal C can be used as a common ground terminal for the six pairs of electrode plates 2a and 2b and the six pairs of electrode plates 3a and 3b.

Now, when considering the voltage drop when starting the engine, the time required to start the engine is short, so the capacity of the battery for backing up electronic equipment may be small. Therefore, in FIG. 1, the two sets of cells on the upper and lower sides do not need to have the same volume, and the cells on the backup side (upper side) can be advantageous in terms of volume and space by having a small volume. Therefore, the first
In the illustrated embodiment, terminal A is used for electronic equipment, terminal B is used for a starter motor, and terminal C is commonly used as a grounding terminal as described above.

With the above structure, it is more advantageous in terms of space than installing two individual batteries, and without increasing the external dimensions of the conventional single battery, the two batteries are not affected by each other's loads. This means that the batteries can be used simultaneously in parallel. Furthermore, the common terminal C allows the number of wiring steps to be reduced compared to mounting two individual batteries.

In the above embodiment, a battery that supplies two power supplies has been described, but it is also possible to use three or more power supplies.

〔Effect of the invention〕

The effects of the present invention are as follows.

(1) Since there are two output terminals that can independently output voltage, it is possible to prevent the in-vehicle devices connected to each terminal from having adverse effects on each other. Therefore, it is possible to prevent adverse effects on electronic equipment due to engine starting.

(2) A three-terminal battery is more advantageous in terms of space than two independent batteries.

(3) The stabilized power supply circuit for electronic equipment can be simplified.

(4) Since it is possible to use cells of a size that corresponds to the power consumption, space can be used more efficiently without waste.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of the structure of a two-electrode source type three-terminal battery according to the present invention, and FIG. 2 is a top view of the battery shown in FIG. 1. 1... Case, 2a, 2b... Small capacity side electrode pair, 3
a, 3b...Pair of electrodes on the large capacity side, A...Output terminal on the small capacity side, B...Output terminal on the large capacity side, C...Common terminal.

Claims (1)

[Claims] 1 Case 1, multiple pairs of electrodes 2a, 2b, 3a,
3b, has two output terminals A and B, and a common terminal C, and the case has cells 21 to 26 with a first volume and a cell 31 with a second volume larger than the first volume.
-36, and the plurality of pairs of electrodes constitute a storage battery.
One output terminal extracts voltage independently from multiple pairs of electrodes, the common terminal serves as a common ground terminal for multiple pairs of electrodes, and at least one pair of multiple pairs of electrodes is arranged in each cell. The two output terminals and the common terminal are led out to the outside of the case, and one of the two output terminals is connected to the cells 31 to 36 having the second volume.
The cells 21 to 3 are connected to one pole of a pair of electrodes 3a and 3b arranged in the cells 21 to 3, the other having a first volume.
The common terminal is connected to one pole of the pair of electrodes 2a, 2b arranged in the cell having the second volume, and the common terminal is connected to the other pole of the pair of electrodes arranged in the cell having the second volume and the cell having the first volume. An automotive multi-power battery connected to the other pole of the pair of electrodes placed inside the battery.