JPH03224873A - Fitting structure of electricity double layer condenser on vehicle - Google Patents

Abstract

PURPOSE:To do without a new installation space and increase the quality of shock-proof and also save the quantity of wiring, by providing an electricity double layer condenser at the inside of a car body structure having a space already. CONSTITUTION:A car body structure, for example, a bonnet panel 3 is fitted with a sound-arresting material 2 at its back. In this instance, an electricity double layer condenser 1 is embedded at the inside of the sound-arresting material 2. And the electricity double layer condenser 1 is covered with a surface skin material 4, and also supported with pressing clips 5 and bonnet reinforcements 6 so as to prevent falling down. As a result, the electricity double layer condenser 1 is furnished by utilizing part of a space which is occupied with the sound-arresting material 2, and without requiring a space anew.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a structure for mounting an electric double layer capacitor used as a power supply device or the like in a vehicle while saving space inside the vehicle.

[Conventional technology]

Electric double layer capacitors are known as capacitors that have a large capacity despite their small volume. Unlike batteries, electric double layer capacitors have the advantage of being able to be charged in a short time and requiring no maintenance. Therefore,
It is often used as a backup power supply or emergency power supply. In recent years, as the performance of electric double layer capacitors has improved, consideration has been given to mounting electric double layer capacitors in vehicles as part of a power supply device for a vehicle electrical load. When mounting, space not previously occupied by any member (
Of course, if the electric double-layer capacitor is used for mounting, an additional space in the car will be used for the volume of the electric double layer capacitor.

[Problem to be solved by the invention]

However, if the system was implemented in a way that used up space that was previously unused, the problem was that the already narrow space inside the car would become even narrower. The present invention aims to solve these problems.

[Means to solve the problem]

In order to solve the above problems, the electric double layer capacitor mounting structure in a vehicle of the present invention is such that the electric double layer capacitor is disposed in a vehicle body structure that already occupies space. Note that the vehicle body structure includes, for example, a bonnet dash board, a roof, a floor, and the like.

[For production]

Saving space by embedding electric double layer capacitors into the vehicle body structure, which already occupies space, allows them to be placed without sacrificing new space that remains unused. becomes possible.

【Example】

Embodiments of the present invention will be described in detail below with reference to the drawings. (First Embodiment) FIG. 1 shows a first embodiment of the present invention. In this embodiment, the hood is selected as the vehicle body structure in which the electric double layer capacitor is disposed, and the electric double layer capacitor is embedded and mounted in the sound insulating material attached to the back side of the bonnet. In FIG. 1, 1 is an electric double layer capacitor, 2 is a sound insulating material, 3 is a bonnet panel, 4 is a skin material, 5 is a holding clip, and 6 is a bonnet rain hose. As the electric double layer capacitor 1, a thin flat plate is used. A sound insulating material 2 is conventionally attached to the back surface of the bonnet panel 3 in order to reduce engine noise leaking to the outside, and an electric double layer capacitor 1 is embedded in the sound insulating material 2. Cover it with a skin material 4 and hold it with a holding clip 5 to prevent it from falling. Securely support with bonnet rain hose 6. In this way, since a part of the space conventionally occupied by the sound insulating material 2 is used for mounting, the sound insulating material 2 can be mounted without requiring additional space. However, since the sound insulating material 2 is reduced by the volume of the electric double layer capacitor 1, the sound insulating function may be degraded, but in order to compensate for this, the amount of sound insulating material 2 above and below the electric double layer capacitor 1 is increased. Good too. However, the electric double layer capacitor 1, as described later,
Since it is made of rubber or a paste-like substance, it has good sound insulation properties, although it is not as good as the sound insulation material 2. Therefore, the volume of the sound insulating material 2 that is increased vertically may be smaller than the volume of the electric double layer capacitor 1. Therefore, compared to the case where an electric double layer capacitor is mounted in a new space that has not been previously used, it can be mounted in a substantially smaller space. Furthermore, since the sound insulating material 2 generally also has a vibration absorbing function, vibrations of the vehicle are less likely to be transmitted to the electric double layer capacitor 1 that is mounted surrounded by the sound insulating material 2, thereby improving earthquake resistance. Next, the structure of the electric double layer capacitor 1 will be explained. FIG. 3 shows a known basic cell of an electric double layer capacitor. In FIG. 3, C is a basic cell, 11 is a current collector, 1
2 is a polarizable electrode, 13 is a separator, and 14 is a gasket. For example, conductive rubber is used for the current collector 11. The polarizable electrode 12 is, for example, a paste made by mixing activated carbon powder and an electrolytic solution (eg, dilute sulfuric acid). Separator 13 is a plastic film that allows ions to pass through but is non-conductive. The gasket 14 is for insulating the polarizable electrode 12 from the surroundings, and is made of, for example, insulating rubber. The current collector 11 and the gasket 14 are bonded together by vulcanization or the like, and house and hold the polarizable electrode 12 therein. A large capacitance can be obtained between the current collectors 11 above and below such a basic cell C. FIG. 4 shows a flat electric double layer capacitor. Third
A desired number of basic cells C as shown in the figure are connected in a desired connection form and housed in a flat insulating case to form a flat electric double layer capacitor 1. In order to obtain the desired capacitance and withstand voltage of the electric double layer capacitor 1, several basic cells C may be connected in combination, an example of which is shown below. FIG. 5 shows an example of a basic cell connection configuration for obtaining a capacitor with a desired capacity and withstand voltage. 'r+, T2 are terminals of the electric double layer capacitor 1. If it is desired to increase the withstand voltage of the electric double layer capacitor 1, the basic cells C may be connected in series. If it is desired to increase the capacity, the basic cells C may be connected in parallel. By doing this, the desired capacity. A capacitor with a desired withstand voltage can be obtained. In Figure 5, three basic cells C are connected in series.
The pairs are connected in parallel. (Second Embodiment) FIG. 2 shows a second embodiment of the present invention. This embodiment is an example in which a dash board is selected as the vehicle body structure in which an electric double layer capacitor is disposed, and the electric double layer capacitor is disposed inside the sound insulating material. In FIG. 2, the numbers correspond to those in FIG. Further, 7 is a dash panel, 8 is a vehicle interior base material, 9 is a skin material, and 10 is a stopper. The left side of the figure is the engine room side, and the right side is the passenger compartment side. Conventionally, the dash panel 7 is equipped with sound insulating material 2 in order to reduce engine noise leaking from the engine compartment into the passenger compartment.
is installed. In this embodiment, an electric double layer capacitor 1 is embedded and mounted in the sound insulating material 2. An electric double layer capacitor l is embedded in a sound insulating material 2, covered with a skin material 9, and attached to a dash panel 7 with a fastener 10. In this way, as in the first embodiment, it is possible to mount the electric double layer capacitor 1 without using additional space for its volume. Sound insulation materials in vehicles are usually mounted in the form of thin flat plates, so flat electric double layer capacitors can be mounted in sound insulation materials in most parts, not just the hood or dash board. I can do it. FIG. 6 is a diagram illustrating a mounting location of a sound insulating material in a vehicle. Sound-insulating materials are also installed on the doors and roof, as well as the hood and dash panel. (Third Embodiment) FIG. 7 shows a third embodiment of the present invention. In this system, the roof and floor are selected as the vehicle body structure, and an electric double layer capacitor is placed in the space inside the structure. In Figure 7, 15 is a vehicle such as a bus, 16
is the roof of the vehicle, and 17 is the floor of the vehicle. In a relatively large vehicle 15 such as a bus, the roof 16 and floor 17 themselves are large in size compared to ordinary passenger cars, and the interior of these structures is large enough to accommodate electric double layer capacitors. You can find space for FIG. 8 is a partial sectional view of the roof 16 of the vehicle 15 provided with an electric double layer capacitor, taken along the line A-A. 18 is an outer plate, 19 is a side member, and 20 is a cross member 21 is an inner plate. A basic cell C is arranged in a space surrounded by a side member 19 and a cross member 20. Although FIG. 8 shows the basic cell C fixed to the inner (lower side in the figure) side member 19, it may be fixed to the outer side member 19. The basic cell C arranged on the roof 16 is used for lighting inside the vehicle,
It can be used as a power source for roof marker lamps, rear view cameras, refrigerators, etc. FIG. 9 is a partial sectional view of the floor 17 of the vehicle 15 in which the electric double layer capacitor is inserted, taken along the line BB. 22 is a floor material, 23 is a cross member, and 24 is a frame side member. Floor material 22. Cross member 23. A basic cell C is arranged in a space surrounded by a frame side member 24. Although FIG. 9 shows the basic cell C fixed to the floor material 22, it may also be fixed to the frame side member 24. The basic cell C disposed on the floor 17 can be used as a power source for all electrical loads of the vehicle. (Fourth Example) A fourth example is a case where a thick wall filled with a heat insulating material is selected as the vehicle body structure in which the electric double layer capacitor is disposed. For example, in a refrigerator car, a large refrigerator is connected to the back of the cabin, and the walls of this refrigerator are filled with a thick layer of insulating material (eg, urethane foam) to insulate the refrigerator from the outside world. One idea is to focus on this thick layer of heat insulating material and embed the electric double layer capacitor therein. FIG. 10 shows such an embodiment, where 25 is a refrigerated truck;
25-1 is a refrigerator, and 26 is a wall. Figure 11 shows wall 2
6 is a partial sectional view taken along the line CC in FIG. 10, 27 is an outer plate, 28 is an inner plate, and 29 is a heat insulating material. The thickness of the filled multi-insulating material 29 is usually 30 to 50 mm.
To some extent, the basic cell C having a thickness of 1 to 2 mm can be embedded in the heat insulating material 29. Activated carbon is used for the polarizable electrode of the basic cell C, but activated carbon also has heat insulating properties, so even if the basic cell C is embedded in the heat insulating material 29, it will impair the cold retention properties of the refrigerator 25-1. Never. Further, when foamed urethane is used as the heat insulating material 29, it acts as a shock absorbing material, so that the shock applied to the basic cell C when the refrigerating vehicle 25 vibrates is softened. The charge charged in the basic cell C can be used for lighting the inside of the refrigerator, etc. 2

【Effect of the invention】

As described above, the present invention provides the following effects. ■ Effective use of space Since electric double layer capacitors are installed in the vehicle body structure such as the dash panel and roof, space can be used effectively. ■ Improving seismic resistance When an electric double layer capacitor is buried in sound insulation or heat insulating material that has a vibration absorption function, some of the vibrations of the vehicle are absorbed by those materials. The earthquake resistance of the capacitor is improved. ■ Save the amount of wiring If installed in the vehicle body structure near the electrical load to be supplied,
Since the distance from the electric double layer capacitor to the electric load is short, it is possible to shorten the wiring distance, which would otherwise have to be made thicker to accommodate the load current. Furthermore, since the electric double layer capacitor can be charged with a small current over a long period of time, the charging wiring from the vehicle battery to the electric double layer capacitor only needs to be a thin wire. Therefore, the amount of wiring can be saved compared to the conventional method in which thick wires corresponding to the load current are wired from the vehicle battery to the electrical load.

[Brief explanation of drawings]

Figure 1: First embodiment of the present invention Figure 2: Second embodiment of the present invention Figure 3: Basic cell of electric double layer capacitor Figure 4:
・・Plant electric double layer capacitor FIG. 5 ・Example of basic cell connection form to obtain a capacitor with desired capacity and withstand voltage FIG. 6 ・・Example of mounting location of sound insulation material in a vehicle Figure 7: Third embodiment of the present invention Figure 8: Partial sectional view of the roof Figure 9: Partial sectional view of the floor Figure 10: Fourth embodiment of the present invention Embodiment Fig. 11...In the partial cross-sectional view of the wall, 1 is an electric double layer capacitor, 2 is a sound insulating material,
3 is a bonnet panel, 4 is a skin material, 5 is a holding clip, 6 is a bonnet rain hose, 7 is a dash panel, 8 is a vehicle interior base material, 9 is a skin material, 10 is a stopper, 11 is a current collector, 12 is a polarizable electrode, 13 is a separator, 14 is a gasket, 15 is a bath, 16 is a roof, 17 is a floor, 18 is an outer panel, 19 is a side member, 20 is a cross member, 21 is an inner panel, 22 is a floor material, 23 is a cross member, 24 is a frame side member, 25 is a refrigerator truck,
26 is the wall, 27 is the outer panel, 28 is the inner panel, 29 is the insulation material, C
is the basic cell.

Claims (1)

[Claims] An electric double layer capacitor mounting structure in a vehicle, characterized in that the electric double layer capacitor is disposed in a vehicle body structure that already occupies space.