JPH04264353A - Voltage supplying apparatus for electric apparatus - Google Patents

Abstract

PURPOSE: To form a light and fine power supply apparatus which conforms to various devices by forming a dry battery or a storage battery into forming materials fitted to a cutout of the device. CONSTITUTION: A plurality of dry batteries or storage batteries 2 are aligned in parallel lines arranged adjacently to each other. A contact tube 3 binds each line. An insulating plate 4 and a wire 5 connect the batteries 2 in series, and a free edge of the wire 5 is connected to a contact plate 6. Additionally, a temperature-measuring resistance for a temperature-monitor device is provided, and this is also connected to the contact plate 6. The contact plate 6 is pushed into a holding cutout member 7 of a contactor 8, then are formed into a forming materials (e.g. polyurethane), being fitted to the cutout member 7. The contactor 8 is covered with a cover 10, and the cover 10 is provided with a large number of measuring holes 11 that enable testing probes to be attached for monitoring charging conditions.

Description

[Detailed description of the invention]

0001

FIELD OF INDUSTRIAL APPLICATION This invention relates to a plurality of rechargeable batteries or accumulators that can be mechanically and electrically connected to each other and inserted into a cutout in a device in a non-frictionally engaging manner, such as a portable computer, etc. This invention relates to a voltage supply device for electrical appliances.

0002

BACKGROUND OF THE INVENTION Battery clusters such as those described above are used for virtually any portable electrical appliance powered by batteries. In most cases, the batteries are placed in discrete locations in a plastic cup-shaped housing. Batteries must be placed into such housings using spring contacts so that the size tolerances of each battery manufacturer can be accommodated. There is a risk of the contact being damaged or even destroyed if mechanical vibrations occur, which would lead to malfunction or non-operation of the respective instrument.

It is also known to combine batteries and rechargeable batteries into one package by means of shrink tubing. This essentially results in only one mechanical unit, in particular also making it impossible to adapt the size of the enclosure to the recess in the respective device.

0004

OBJECTS OF THE INVENTION An object of the present invention is to provide a battery enclosure that is light, tight, and individually adaptable to various types of appliances, and that allows reliable contact and degassing of the battery. It's about providing things.

[0005]

This object is achieved according to the invention by foaming the battery or accumulator in a mold into a foam material that fits into the cutout of the device.

[0006]

A foam of this type, which can be made, for example, from a polyurethane foam material, can be shaped with great precision in its external dimensions. In that case, the size tolerance of the battery itself can be smoothed out to some extent. Due to the porous structure of the foamed material, it is very light and can therefore be made significantly lighter in electronics compared to, for example, conventional epoxide resin injection methods.

[0007] It is advantageous if one contact bar is foamed into the foam and left open on the outside. Prior to injection foaming, a number of cells are wired together and the wire ends are collected on this contact bar. The contact bar can be precisely positioned in the mold by means of corresponding recesses or projections. The contact plate can form a protrusion on its inner surface to ensure secure anchoring in the foam. After demolding, the contact plate can be firmly fixed in the foam while being open on the outside so that it can be easily captured and precisely positioned contact is achieved.

In this regard, it is advantageous for the contact bar to have a plurality of insertion holders for the insertion of electrical contact plates connected to the electrical wires. In this way, the contact plate can simply be inserted into the contact bar before refoaming, ie before foam formation.

Furthermore, at least two contact plates can be connected to the temperature-measuring resistor. Temperature-measuring resistors of this type can pick up unacceptable heating, especially during charging. If the voltage supply device is accordingly removed from the appliance and placed in the corresponding charger, it is also possible to perform a temperature monitoring contact action simultaneously with insertion.

When handling the voltage supply device, before inserting it into an appliance or a charger, the state of charge of the voltage supply device can be checked through this measuring hole without removing the protective cover, in order to prevent short circuits due to contact contact. can do. Nevertheless, the protection remains intact and is protected from unexpected contact.

[0011] The end face of the accumulator or battery with the contacts is fitted with a preferably gas-permeable cover plate made of fleece or the like. With this configuration, it can be assumed that even expensive rechargeable batteries can degas, at least under certain conditions. This outgoing gas needs to be able to escape. If gas is difficult to escape, additional holes can be added to facilitate this.

[0012] The cover plate may be provided with a notch for mounting a contact joint plate for connecting the electrodes of adjacent cells.

[0013] In order to position and group the individual cells already before injection of the foam, these cells can be bound together by means of an insulating tube or the like.

The drawings showing the embodiments will be explained in more detail.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The illustrated voltage supply device 1 according to the invention has a number of round, rod-shaped, rechargeable batteries 2. For example, three of these batteries are arranged one behind the other in each row, and the batteries are arranged in three adjacent rows. The individual rows are bound together by one insulating tube 3. The contact plate 4 and the wire 5 are for connecting the rechargeable batteries 2 in series, the free end of the wire 5 being connected to the contact plate 6. Furthermore, a temperature monitoring device in the form of a temperature measuring resistor 20 can be provided. These monitoring devices can also be connected to the contact plate 6. These contact plates 6 are pushed into the holding notches 7 of the contact bars 8. The contact bar 8 has an extension 9 for a fixed connection with the foam material molding to be produced. The foamed material molded article will be explained below.

The contact bar 8 is covered by a cover 10. The cover is foldable or retractable or removable when it is desired to insert the voltage supply into an appliance, as indicated by the dashed line.

A number of measuring holes 11 are provided in the cover 10, through which it is possible to attach the test tip of a measuring instrument for determining the state of charge.

Cover plates 13 are attached to the end face 12 of the battery package, and these cover plates have joint plates 14 extending along the upper side, and exhaust holes 15 are provided in these joint plates. Yes, these exhaust holes are made of foamed material molded body 17.
This corresponds to the hole 19 of. The cover plate 13 itself has a cutout 16 to allow the attachment of the contact plate 4.

The foamed material molding 17 can be additionally or alternatively provided with cutouts (not shown). These cutouts open openings (not shown) provided in the insulating tube 3 to facilitate or enable gas release.

The structure described above, shown in FIG. 2, is refilled with a polyurethane molding after insertion into the mold to form a foamed material molding 17. The foamed material molding is shown in the poured state in FIG. 1 and also in the finished state in FIG. 2, but only in dashed lines.

As can be seen from FIG. 1, the foamed material molded body 17
There are retaining cutouts 18 inside, which work together with corresponding holes in the cutout on the instrument side to ensure accurate positioning. If it is necessary to securely fasten the voltage supply device itself to the instrument, for example spring-loaded holding slides can be provided in the area of these recesses 18.

[0022]

From the above description, it is clear that the voltage supply device according to the invention provides a compact and lightweight structure. This construction facilitates handling when inserted into a device or charger, provides greater safety against accidental short circuits, and facilitates control of charge status and charge supply.

[Brief explanation of the drawing]

1 is a perspective view of a completed voltage supply device according to the invention; FIG.

FIG. 2 is an exploded perspective view of the individual components of the voltage supply device according to the invention before foaming;

[Explanation of symbols]

1 Voltage supply device 2 Battery 3 Insulation tube 4 Contact action plate 5 Electric wire 6 Contact plate 7 Push grip part 8 Contact crosspiece 9 Extension part 10 Protective cover 11 Measurement hole 12 End face 13 Cover plate 14 Joint plate 15 Exhaust hole 16 Notch 17 Foamed material molded body 18 Holding notch 19 hole 20 Temperature measurement resistance

Claims (10)

[Claims] 1. In a voltage supply device for an electrical appliance, such as a portable computer, in which a number of rechargeable batteries or accumulators can be mechanically and electrically connected to each other and inserted into a cutout in a non-frictionally engaging manner. , battery or storage battery (2
) is foamed into a foam material body (17) that conforms to the shape of the notch of the device. 2. The voltage supply device according to claim 1, wherein the contact bar (8) is foamed into a foamed material body (17) so that the outside thereof is open. 3. The contact bar (8) has a push-in grip part (
7) The voltage supply device according to claim 2, wherein the voltage supply device has a large number of. 4. Voltage supply device according to claim 3, characterized in that at least two of the electrical contact plates (6) are connected to temperature measuring resistors (20). 5. Voltage supply device according to claim 2, characterized in that the contact bar (8) is covered by a removable protective cover (10) before insertion into the electrical appliance. 6. Voltage supply device according to claim 5, characterized in that a measuring hole (11) is provided in the protective cover (10) in the area of the electrical contact plate (6) of the contact bar (8). 7. The voltage supply according to claim 1, characterized in that a gas-permeable covering plate (13) made of fleece material or the like is attached to the end face (12) of the storage battery or battery (2) where the contact point is located. Device. 8. The voltage supply device according to claim 7, wherein the cover plate (13) has a notch (16) for mounting the contact joint plate (4). 9. Voltage supply device according to claim 1, characterized in that the accumulators or batteries (2) are bound together with an insulating tube (3) or the like before reinjection. 10. Voltage supply device according to claim 9, characterized in that the foam material molding (17) has a cutout exposing an opening in the insulating tube (3).