JPH0797505B2 - Vehicle battery - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle battery, and more particularly to a vehicle battery that can cope with a large-capacity load for a short time and can effectively prevent the G pulse of the alternator from occurring.

[Prior Art] Since a large current flows in a relatively short time when a vehicle starter is started, the battery voltage drops significantly. In order to suppress the voltage drop at this time, it is sufficient to increase the battery capacity, but increasing the battery capacity in order to cope with a large current for a short time cannot be adopted because it leads to an increase in size and cost.

When the active material on the electrode plate inside the battery falls off, the battery is opened, and a high-voltage G pulse appears at the output terminal of the alternator that supplies current to the battery.

[Problems to be solved by the invention]

Therefore, it is conceivable to provide a capacitor in order to supply a large current for a short time without lowering the voltage and to effectively absorb the G pulse, but for this purpose, a relatively large capacity is used. There is a problem that it is difficult to mount on a vehicle that requires a large capacitor and has a limited space.

The present invention is intended to solve the above problems, and to provide an inexpensive vehicle battery capable of effectively preventing a voltage drop and a G pulse at the time of supplying a large current without providing a large capacitor separately. With the goal.

[Means for solving problems]

The structure of the present invention will be described with reference to FIG. 1. The outer periphery of the housing 61 of the vehicle battery 6 is wound around by alternately laminating the dielectric films 1 and the film electrodes 2 and 3, and one film electrode 2 is arranged. Further, the film-like electrode 3 connected to the positive electrode 4 of the battery 6 and the remaining film-shaped electrode 3 is connected to the negative electrode 5 of the battery 6.

[Action, effect]

According to the vehicle battery having the above structure, the film electrodes 2 and 3 facing each other with the dielectric film 1 interposed therebetween constitute a capacitor connected in parallel to the battery, and the capacitor is quickly discharged under a large load for a short time. To suppress the decrease in battery voltage,
Further, the G pulse is absorbed and reduced by the capacitor.

Further, according to the present invention, a wide electrode area can be secured by alternately winding dielectric films and film electrodes on the outer periphery of the housing, and a large-capacity capacitor can be realized inexpensively without requiring an installation space. You can

〔Example〕

In FIG. 1, film electrodes 2 and 3 sandwiching a dielectric film 1 are alternately laminated on the outer periphery of a side of a housing 61 of a vehicle battery 6, and the electrodes 2 are connected to each other to form a battery 6.
Are connected to the positive electrode 4, the electrodes 3 are connected to each other, and are connected to the negative electrode 5 of the battery 6. The dielectric film 1 and the film electrodes 2 and 3 are made of a sulfuric acid-resistant insulating resin such as AB.
It is covered with a resin layer such as S resin and fixed to the housing 61.

The dielectric film 1 and the film electrodes 2 and 3 are stacked and wound around the outer circumference of the housing 61. This is shown in FIGS.
Shown in the figure. In FIG. 2, the dielectric film 1 is electrolytic paper impregnated with an electrolytic solution mainly composed of ammonium borate, and the film electrodes 2 and 3 are aluminum foils. The dielectric film 1 and the film electrodes 2 and 3 are laminated with their side edges slightly displaced, and are wound around the outer periphery of the housing 61 as shown in FIG.

The side edges (FIG. 4) of the above-mentioned film electrodes 2 and 3 protruding in the vertical direction in the state of being wound every other are connected by caulking to each other, and these are connected to the positive electrode or the negative electrode by the lead wires 21 and 31. Connect (Fig. 1).

With such a structure, a large-capacity capacitor of several quadrats is formed between the film electrodes, and a large capacitor is not provided as a separate body, and a small space can be inexpensively provided in a small space at a low cost due to a large current for a short time during starter startup. It can be effectively prevented.

In the above-mentioned embodiment, since the film electrodes are connected to each other by caulking all around, the electric resistance of the connecting portion can be reduced.

In the above embodiment, a so-called electrolytic capacitor having a small size and a large capacity is formed between the film electrodes, but a dielectric resin film may be used as the dielectric film to form the film capacitor.

[Brief description of drawings]

1 is a partial cross-sectional side view of a battery, FIG. 2 is a perspective view in which a dielectric film and a film electrode are stacked, and FIG. 3 is a perspective view in which a dielectric film and a film electrode are wound around a battery housing. FIG. 4 is a partial sectional side view of the battery. 1 ... Dielectric film 2, 3 ... Membrane electrode 4 ... Positive electrode 5 ... Negative electrode 6 ... Battery 61 ... Battery housing 7 ... Resin layer

Claims (2)

[Claims] 1. A dielectric film and a film electrode are alternately stacked and wound around the outer circumference of a vehicle battery housing, and every other film electrode is connected to the positive electrode of the battery and the remaining film electrodes are connected to the battery. A vehicle battery characterized by being connected to the negative electrode. 2. The vehicle battery according to claim 1, wherein the dielectric film is made of electrolytic paper and the film electrode is made of aluminum foil.