WO2005124963A2 - Energy storage device - Google Patents

Energy storage device Download PDF

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Publication number
WO2005124963A2
WO2005124963A2 PCT/EP2005/006676 EP2005006676W WO2005124963A2 WO 2005124963 A2 WO2005124963 A2 WO 2005124963A2 EP 2005006676 W EP2005006676 W EP 2005006676W WO 2005124963 A2 WO2005124963 A2 WO 2005124963A2
Authority
WO
WIPO (PCT)
Prior art keywords
battery
energy storage
storage device
electrical
control device
Prior art date
Application number
PCT/EP2005/006676
Other languages
German (de)
French (fr)
Other versions
WO2005124963A3 (en
Inventor
Gert Willner
Original Assignee
A1. Light And More Lichttechnik Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by A1. Light And More Lichttechnik Gmbh filed Critical A1. Light And More Lichttechnik Gmbh
Publication of WO2005124963A2 publication Critical patent/WO2005124963A2/en
Publication of WO2005124963A3 publication Critical patent/WO2005124963A3/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
    • F21L4/00—Electric lighting devices with self-contained electric batteries or cells
    • F21L4/08—Electric lighting devices with self-contained electric batteries or cells characterised by means for in situ recharging of the batteries or cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/247—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for portable devices, e.g. mobile phones, computers, hand tools or pacemakers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the invention relates to a rechargeable, electrical energy storage device according to the preamble of claim 1.
  • an elaborate charger is dispensed with by means of an electronic regulating and control device integrated in the energy storage device and adapted to the battery cells used.
  • Any accumulator cells can also be used can be, even those that can not be used for ordinary applications, for example, because they require a specific charging process.
  • Simple small electrical devices such as flashlights, electric children's toys, remote controls, portable sound recording and / or reproducing devices usually have a battery compartment for receiving one or more batteries, the dimensions of which are matched to the arrangement and number of batteries that is required to get the desired capacity and voltage. Electrical taps are arranged in the battery compartment and can be electrically connected to the poles of the batteries.
  • battery cells in battery form are available for such devices, which can be inserted into the battery compartment instead of the batteries and can be charged by means of a special charger. For charging, these battery cells must be removed from the battery compartment and placed in the charger.
  • the disadvantage of this is that, on the one hand, special chargers are required, which due to their dimensions and due to their fixed operating voltage cannot easily be carried on holiday trips, for example, or cannot be used for optional recharging of the battery cells on the power grid and in automobiles.
  • the shape of the battery only allows the use of a few specific material combinations for the rechargeable battery cells, which predominantly have a low specific energy density and usually have the additional disadvantage of a memory effect, which is particularly disadvantageous in particular in the case of flashlights which are available for emergencies and are rarely used.
  • flashlights which contain integrated battery cells and an integrated charger and can be plugged directly into an AC socket, and such flashlights for plugging into the cigar lighter in automobiles.
  • a rechargeable flashlight which has a housing with a charging circuit fixed therein and not releasably in everyday use, as well as in the housing fixedly and non-releasably arranged rechargeable battery cells in everyday use. It is provided that the charging circuit is connected directly to the AC network, for example by means of a mains cable.
  • Flashlights of this type have the disadvantage that they can be charged either only on the AC power supply or only on board an automobile and, moreover, have a protruding electrical plug or an external electrical socket, which represents a potential point of damage and interferes with the use of the flashlight , Such flashlights have to be completely replaced if the plug or a battery cell is damaged, as a result of which the operating cost advantage compared to a flashlight with batteries is eliminated.
  • flashlights are known in which one or more battery cells are arranged, which can be charged via the flashlight housing, for example by means of electrical contact rings on the outer circumference of the handle, when the flashlight is inserted into a charger having a holding device.
  • the disadvantage of this is the special charger in connection with a torch housing which is very complex to construct, whereby in particular the advantage of the low purchase costs of commercially available, battery-operated torches is eliminated.
  • a flashlight with integrated battery cells is known from WO 01/98705 A1, in which the energy for recharging the battery cells is transferred from a charger to the battery cells by means of an inductive transmission device.
  • a disadvantage of such a flashlight is the high cost of acquisition compared to a conventional, battery-operated flashlight. The high investment does not pay off, especially in the case of flashlights which are only available for emergencies, since the battery cells cannot be replaced and the entire flashlight must therefore always be replaced in the case of degenerated battery cells.
  • the invention is therefore based on the object of developing an electrical energy storage device which can be recharged using the simplest of means and which also makes it possible to use sensitive battery cells which have a high specific energy density, in particular in normally battery-operated flashlights and small electrical devices.
  • the electronic regulating and control device Due to the use of an electronic regulating and control device integrated in the energy storage device and controlling the charging process by regulating at least the charging current and / or the charging voltage when recharging the accumulator cell, no special charger is required for recharging the accumulator cell.
  • the electronic regulating and control device can be connected with its input to a commercially available power pack or directly, for example by means of a cable or via an adapter, to a cigar lighter in an automobile.
  • the regulating and control device which is adapted to the type of the battery cell and which regulates the charging current and / or the charging voltage in accordance with the battery cell, allows the use of a simple power supply unit that can be connected to the AC network for recharging the battery cell.
  • the advantage of conventional flashlights can be used, which are easy to manufacture and are available in many different variants on the market adapted to special applications, the energy storage device according to the invention being inserted into the battery compartment of the flashlight and the flashlight being able to be operated as usual.
  • special handling special for example with regard to the charging process sensitive battery cells
  • the regulating and control device which monitors the charging process and is usually arranged in a special charger that is matched to a specific battery type, has been relocated to the energy storage device in order to deal with such Simplify battery cells and make them safer, especially with regard to a possible risk of explosion which occurs when some battery cells are connected to an incorrect charger.
  • the battery compartments of commercially available flashlights have essentially only 4 or 5 different diameters, and depending on the voltage required by the lamp, certain lengths, which correspond to the sum of the individual lengths of the batteries, which are to be arranged in series, in order to achieve the required operating voltage for the lamp to obtain.
  • the energy storage device according to the invention only has to be manufactured in a limited number of different dimensions in order to be usable for all commercially available flashlights. As a result, particularly low manufacturing costs of such energy storage devices can be achieved.
  • battery cells Due to the integrated electronic regulating and control device for controlling the charging process, battery cells can be used which have a considerably higher capacity than conventional batteries or commercially available accumulators, but which have to be recharged according to a certain method, so that the battery life remains the same as for batteries lower total weight, or with a constant total weight due to the higher specific energy density, a longer period of use compared to battery operation can be achieved.
  • no special chargers are required, since the regulating and control device is matched to the battery cells used, so that a simple power supply unit is sufficient for recharging the energy storage device.
  • the regulating and control device can be a rectifier when using an AC power supply unit or contain a diode circuit to protect against polarity reversal in a DC power supply or a combination of both for the use of any power supply unit, the power supply unit not having to contain any special electronic circuit.
  • the electronic regulating and control device and the accumulator cell can be enveloped and held together, for example by means of a shrink tube or the like.
  • An advantageous embodiment of the invention is characterized by a housing which accommodates the battery cell and the electronic regulating and control device and which has an external dimension adapted to the cross section, for example the diameter and / or length of a battery compartment of the electrical device, such as a flashlight, and on the outside Housing arranged, connected to the poles of the battery cell and their position adapted to the position of the electrical taps arranged in the battery compartment of the flashlight.
  • a housing it is achieved on the one hand to be able to use one or more battery cells with any shape and any position of the poles for the energy storage device, since only the housing with its external dimensions has to be matched to the dimensions of the battery compartment.
  • contacts for releasable electrical connection of the energy storage device with the electrical taps arranged in the battery compartment can be arranged at any point on the housing regardless of the position of the poles of the battery cell, the Contacts in their position on the housing can be adapted to the position of the electrical taps in the battery compartment.
  • An advantageous embodiment of the invention provides that a shock-absorbing filling is arranged at least between the battery cell and the housing, in order to protect the electronic regulating and control device and the battery cells against damage from shocks and vibrations.
  • Another advantageous embodiment of the invention is characterized by an electrical socket arranged on the housing, connected to the input of the electronic regulating and control device and connectable to the output of the power supply unit, for example via an electrical plug-socket connection.
  • An additional, advantageous embodiment of the invention is characterized by an induction coil arranged in the housing and connected to the input of the electronic regulating and control device for contactless recharging of the battery cells by means of a pulsating electromagnetic field that can be generated by a magnetic field generating device.
  • the induction coil generates an electrical alternating current from the change in the field of the pulsating electromagnetic field generated by the magnetic field generating device, which alternating current can be rectified by a rectifier circuit in the electronic regulating and control device and can be used to charge the battery cell.
  • the magnetic field generating device can be designed as a holding shell or as a stand for the flashlight, so that it serves simultaneously as a storage and as a charging station for the flashlight, the electronic regulating and control device being able to recognize whether the battery cell has a trickle charge, which is the self-discharge compensated, or recharging required.
  • a particularly advantageous embodiment of the invention is characterized by the use of a lithium-ion battery as the battery cell, and an electronic regulating and control device that controls the charging process especially for the lithium-ion battery.
  • the energy storage device allows the use of lithium-ion batteries, since the charging process is controlled by the electronic regulating and control device which is firmly connected to the battery cells within the energy storage device and is adapted to the respective battery type.
  • the electronic regulating and control device is adapted to the higher line voltage compared to conventional accumulators, such as, for example, nickel-cadmium or metal hybrid cells, which additionally prevents the use of lithium-ion accumulators in connection with conventional chargers , so that the handling of the high-performance battery is harmless for the user.
  • conventional accumulators such as, for example, nickel-cadmium or metal hybrid cells
  • the higher weight-specific energy density of the lithium-ion battery enables a higher capacity of the energy storage device and thus a longer period of use of the conventionally constructed flashlight operated with such an energy supply device compared to conventional operation with batteries or other accumulator cells.
  • Especially in connection with a little electricity consuming LED light source in a flashlight results in a very long service life.
  • FIG. 1 shows an electrical energy storage device according to the invention inserted into a battery compartment of a flashlight
  • FIG. 2 shows an electrical energy storage device according to the invention
  • FIG. 3 shows an electrical energy storage device according to the invention connected for recharging to a commercially available power pack
  • Figure 4 is a commercially available flashlight with a battery compartment and batteries arranged therein.
  • a flashlight 1 shown in FIG. 4 has an illuminant 2 and a battery compartment 3 for holding batteries 4.
  • the length of the battery compartment 3 is adapted to the required number of batteries 4, which are necessary in order to connect the operating voltage of the illuminant in series 2 to generate.
  • a battery compartment cover 17 designed as an end cap closes a battery removal opening arranged on the end of the flashlight 1 facing away from the illuminant 2.
  • the diameter of the battery compartment 3 corresponds approximately to the diameter of the batteries 4.
  • electrical taps 5 are arranged directly with the illuminant or via an on / off switch (not shown), which have batteries 6 with the poles 6 inserted in the battery compartment 3 the batteries 4 are in electrical connection to operate the lamp 2.
  • the location of the electrical taps 5 in the battery compartment 3 is matched to the arrangement of the poles 6 on the batteries 4.
  • an electrical energy storage device 7 is arranged in the battery compartment 3 instead of the batteries 4.
  • the electrical energy storage device 7 shown in more detail in FIG. 2 consists of an electronic regulating and control device 8, two accumulator cells 9 arranged in series, and a housing 10 comprising the electronic regulating and control device 8 and the accumulator cells 9.
  • An electrical socket is attached to the housing 11 arranged to connect the electrical energy storage device 7 with a commercially available power supply 12 for recharging the battery cells 9.
  • electrical contacts 13 connected to the poles 6 of the battery cells 9 are arranged such that when the energy storage device 7 is inserted in the battery compartment 3, the electrical contacts 13 are electrically connected to the electrical taps 5.
  • the electronic regulating and control device 8 is connected with its input to the electrical socket 11 and with its output to the poles 6 of the battery cells 9.
  • FIG. 3 it can be seen how the electrical energy storage device 7 is charged via a simple, commercially available power supply unit 12 in that the power supply unit 12 is connected to the electrical energy storage device with the plug 14 arranged at its output and which is plugged into the electrical socket 11 ,
  • the electronic regulating and control device 8 which is connected with its input 15 to the socket 11 and with its output 16 to the poles 6 of the battery cells 9, monitors the charging process by regulating the charging current and the charging voltage.
  • the battery cells 9 are designed as lithium-ion batteries, the electronic regulating and control device 8 first applying a constant charging current and then a constant charging voltage to the battery cells 9. When charging lithium-ion batteries, the battery is charged with permanent charging current. First, the lithium-ion battery is charged with a preset current.
  • the charging current is reduced.
  • the charging current is reduced to such an extent that the cell voltage is not exceeded. It is discharged up to a cell voltage of 2.7V.
  • This minimum discharge voltage can also be monitored by the electronic regulating and control device 8, it being possible for the current flow to be interrupted if the temperature falls below this threshold.
  • One cell corresponds to a nominal voltage of 3.6V, so that with two cells the charging current and the charging voltage are set to a 7.2V battery.
  • the power supply unit does not have to have any special electronics, since the charging process is completely monitored and carried out by the electronic regulating and control device 8 integrated in the electrical energy storage device 7.
  • the power supply unit only has to transform down from the AC voltage to 12V DC voltage or pulsating DC voltage.
  • the electronic regulating and control device 8 integrated in the energy storage device and connected to the accumulator cell or cells is designed for 12V, so that recharging in the automobile or caravan or on a boat is also readily possible via the vehicle electrical system, in particular via the cigar lighter ,
  • the electronic regulating and control device 8 can also be designed to carry out a trickle charge, which is carried out, for example, every 6 hours or when the battery voltage drops below 4.0 V per cell.
  • the invention is commercially applicable in particular in the field of the production of energy storage devices for retrofitting in flashlights.

Abstract

Disclosed is a rechargeable electrical energy storage device (7), particularly for use in a torch (1), comprising at least one accumulator cell and an electric regulation and control device whose output is connected to the electric poles of the accumulator cell. The input of the electronic regulation and control device can be connected to the power supply in order to recharge the accumulator cell.

Description

EnergiespeichervorrichtungEnergy storage device
Die Erfindung betrifft eine wiederaufladbare, elektrische Energiespeichervorrichtung nach dem Oberbegriff des Anspruches 1.The invention relates to a rechargeable, electrical energy storage device according to the preamble of claim 1.
Bei der gestaltungsgemäßen Vorrichtung wird mittels einer in die Energiespeichervorrichtung integrierten und auf die verwendeten Akkumulatorzellen angepassten elektronischen Regel- und Steuervorrichtung auf ein aufwändiges Ladegerät verzichtet. Darüber hinaus können beliebige Akkumulatorzellen verwendet werden können, auch solche, welche für gewöhnliche Anwendungen nicht verwendbar sind, da sie beispielsweise ein bestimmtes Ladeverfahren benötigen.In the device according to the design, an elaborate charger is dispensed with by means of an electronic regulating and control device integrated in the energy storage device and adapted to the battery cells used. Any accumulator cells can also be used can be, even those that can not be used for ordinary applications, for example, because they require a specific charging process.
Einfache elektrische Kleingeräte, wie beispielsweise Taschenlampen, elektrisches Kinderspielzeug, Fernbedienungen, tragbare Tonaufnahme- und / oder -Wiedergabegeräte weisen meist ein Batteriefach zur Aufnahme einer oder mehrerer Batterien auf, welches in seinen Abmessungen auf die Anordnung und Anzahl der Batterien abgestimmt ist, die erforderlich ist, um die gewünschte Kapazität und Spannung zu erhalten. In dem Batteriefach sind elektrische Abgriffe angeordnet, welche mit den Polen der Batterien elektrisch verbindbar sind. Zur Verringerung der Betriebskosten sind für derartige Geräte Akkumulatorzellen in Batterieform erhältlich, welche anstelle der Batterien in das Batteriefach einlegbar sind und mittels eines speziellen Ladegeräts aufladbar sind. Zum Aufladen müssen diese Akkumulatorzellen aus dem Batteriefach herausgenommen und in das Ladegerät eingelegt werden. Nachteilig hieran ist, dass einerseits spezielle Ladegeräte benötigt werden, welche aufgrund ihrer Abmessungen und aufgrund ihrer festen Betriebsspannung nicht ohne weiteres beispielsweise auf Urlaubsreisen mitgeführt, oder nicht zum wahlweisen Wiederaufladen der Akkumulatorzellen am Stromnetz und in Automobilen verwendet werden können. Darüber hinaus erlaubt die Batterieform nur die Verwendung weniger bestimmter Materialkombinationen für die Akkumulatorzellen, welche überwiegend eine geringe spezifische Energiedichte und meist den zusätzlichen Nachteil eines Memoryeffekts aufweisen, was insbesondere bei für Notfälle bereitgehaltenen und nur selten benutzten Taschenlampen besonders nachteilig ist.Simple small electrical devices, such as flashlights, electric children's toys, remote controls, portable sound recording and / or reproducing devices usually have a battery compartment for receiving one or more batteries, the dimensions of which are matched to the arrangement and number of batteries that is required to get the desired capacity and voltage. Electrical taps are arranged in the battery compartment and can be electrically connected to the poles of the batteries. In order to reduce the operating costs, battery cells in battery form are available for such devices, which can be inserted into the battery compartment instead of the batteries and can be charged by means of a special charger. For charging, these battery cells must be removed from the battery compartment and placed in the charger. The disadvantage of this is that, on the one hand, special chargers are required, which due to their dimensions and due to their fixed operating voltage cannot easily be carried on holiday trips, for example, or cannot be used for optional recharging of the battery cells on the power grid and in automobiles. In addition, the shape of the battery only allows the use of a few specific material combinations for the rechargeable battery cells, which predominantly have a low specific energy density and usually have the additional disadvantage of a memory effect, which is particularly disadvantageous in particular in the case of flashlights which are available for emergencies and are rarely used.
Darüber hinaus sind Taschenlampen bekannt, welche integrierte Akkumulatorzellen sowie ein integriertes Ladegerät enthalten und direkt in eine Wechselstromsteckdose einsteckbar sind, sowie derartige Taschenlampen zum Einstecken in den Zigarrenanzünder in Automobilen. So ist beispielsweise aus DE 100 00 770 A1 eine derartige wiederaufladbare Taschenlampe bekannt, welche ein Gehäuse mit darin fest und im alltäglichen Gebrauch nicht lösbar angeordneter Ladeschaltung, sowie ebenso in dem Gehäuse fest und im alltäglichen Gebrauch nicht lösbar angeordneten Akkumulatorzellen aufweist. Dabei ist vorgesehen, die Ladeschaltung beispielsweise mittels eines Netzkabels direkt mit dem Wechselstromnetz zu verbinden. Derartige Taschenlampen weisen den Nachteil auf, dass sie entweder nur am Wechselstromnetz, oder nur an Bord eines Automobils aufgeladen werden können und darüber hinaus einen abstehenden elektrischen Stecker oder eine außen liegende elektrische Buchse aufweisen, was eine potentielle Schadenstelle darstellt und beim Umgang mit der Taschenlampe stört. Solche Taschenlampen müssen bei einer Beschädigung des Steckers oder einer Akkumulatorzelle vollständig ausgetauscht werden, wodurch der Betriebskostenvorteil gegenüber einer Taschenlampe mit Batterien entfällt.In addition, flashlights are known which contain integrated battery cells and an integrated charger and can be plugged directly into an AC socket, and such flashlights for plugging into the cigar lighter in automobiles. For example from DE 100 00 770 A1 Such a rechargeable flashlight is known, which has a housing with a charging circuit fixed therein and not releasably in everyday use, as well as in the housing fixedly and non-releasably arranged rechargeable battery cells in everyday use. It is provided that the charging circuit is connected directly to the AC network, for example by means of a mains cable. Flashlights of this type have the disadvantage that they can be charged either only on the AC power supply or only on board an automobile and, moreover, have a protruding electrical plug or an external electrical socket, which represents a potential point of damage and interferes with the use of the flashlight , Such flashlights have to be completely replaced if the plug or a battery cell is damaged, as a result of which the operating cost advantage compared to a flashlight with batteries is eliminated.
Zusätzlich sind Taschenlampen bekannt, in welchen eine oder mehrere Akkumulatorzellen angeordnet sind, welche über das Taschenlampengehäuse, beispielsweise durch elektrische Kontaktringe am Außenumfang des Handgriffes, aufladbar sind, wenn die Taschenlampe in ein eine Haltevorrichtung aufweisendes Ladegerät eingelegt wird. Nachteilig hieran ist das spezielle Ladegerät in Verbindung mit einem sehr aufwändig zu konstruierenden Taschenlampengehäuse, wodurch insbesondere der Vorteil der günstigen Anschaffungskosten von handelsüblichen, batteriebetriebenen Taschenlampen entfällt.In addition, flashlights are known in which one or more battery cells are arranged, which can be charged via the flashlight housing, for example by means of electrical contact rings on the outer circumference of the handle, when the flashlight is inserted into a charger having a holding device. The disadvantage of this is the special charger in connection with a torch housing which is very complex to construct, whereby in particular the advantage of the low purchase costs of commercially available, battery-operated torches is eliminated.
Aus US 4,357,648 ist eine wiederaufladbare Taschenlampe bekannt, bei der in einer das Batteriefach verschließenden, rückwärtigen Endkappe des Gehäuses ein Ladegerät integriert ist. Dadurch können in das Batteriefach konventionelle Akkumulatorzellen anstelle von Batterien eingesetzt und in der Taschenlampe aufgeladen werden. Dabei ist vorgesehen, das Kabel eines konventionellen Netzteils in eine an der Endkappe angeordnete Buchse einzustecken. Ebenso ist vorgesehen, konventionelle, batteriebetreibene Taschenlampen durch Ersatz der rückwärtigen Endkappe durch eine Endkappe mit integriertem Ladegerät in eine wiederaufladbare Taschenlampe umzurüsten.From US 4,357,648 a rechargeable flashlight is known in which a charger is integrated in a rear end cap of the housing which closes the battery compartment. As a result, conventional battery cells can be inserted into the battery compartment instead of batteries and charged in the flashlight. It is intended to insert the cable of a conventional power supply unit into a socket arranged on the end cap. It is also provided Convert conventional, battery operated flashlights into a rechargeable flashlight by replacing the rear end cap with an end cap with an integrated charger.
Nachteilig hieran ist, dass hierzu ein teurer und aufwändiger Umbau der konventionellen, batteriebetriebenen Taschenlampe erforderlich ist, bei dem die das Batteriefach verschließende Endkappe des Gehäuses durch eine auf das Gehäuse passende Endkappe mit darin integriertem Ladegerät ersetzt wird. Dies setzt voraus, dass die auszutauschenden Endkappen die gleichen Mittel zum Verschließen des Batteriefachs, sowie die gleiche Anordnung von elektrischen Abgriffen und Kontakten aufweisen. Darüber hinaus ist es mit einem erheblichen Aufwand verbunden, die Taschenlampe so umzurüsten, dass ein Aufladen der in das Batteriefach eingelegten Akkumulatorzellen ohne Betreiben des Leuchtmittels, also bei durch den Ein/Ausschalter unterbrochenem Stromkreis möglich ist. Zusätzlich verbleibt der Nachteil einer beschränkten Materialwahl für die Akkumulatorzellen, was einerseits durch die Batterieform, und andererseits durch das Ladeverfahren des in die Endkappe integrierten, von den Akkumulatorzellen unabhängigen Ladegeräts bedingt ist. Des weiteren verbleibt der oben beschriebene Nachteil einer außen an der Endkappe angeordneten elektrischen Buchse.The disadvantage of this is that this requires an expensive and time-consuming modification of the conventional, battery-operated flashlight, in which the end cap of the housing which closes the battery compartment is replaced by an end cap which fits the housing and has a charger integrated therein. This presupposes that the end caps to be replaced have the same means for closing the battery compartment and the same arrangement of electrical taps and contacts. In addition, it is associated with considerable effort to convert the flashlight in such a way that it is possible to charge the battery cells inserted into the battery compartment without operating the illuminant, that is to say when the circuit is interrupted by the on / off switch. In addition, there remains the disadvantage of a limited choice of materials for the rechargeable battery cells, which is due on the one hand to the shape of the battery and on the other hand to the charging method of the charger integrated in the end cap and independent of the rechargeable battery cells. Furthermore, the above-described disadvantage of an electrical socket arranged on the outside of the end cap remains.
Aus WO 01/98705 A1 ist eine Taschenlampe mit integrierten Akkumulatorzellen bekannt, bei der die Energie zum Wiederaufladen der Akkumulatorzellen von einem Ladegerät mittels einer induktiven Übertragungsvorrichtung auf die Akkumulatorzellen übertragen wird. Nachteilig an einer deratigen Taschenlampe sind die gegenüber einer konventionellen, batteriebetreibenen Taschenlampe hohen Anschaffungskosten. Die hohe Investition zahlt sich insbesondere bei nur für den Notfall bereitgehaltenen Taschenlampen nicht aus, da die Akkumulatorzellen nicht auswechselbar sind und somit bei degenerierten Akkumulatorzellen immer die gesamte Taschenlampe ausgewechselt werden muss. Der Erfindung liegt daher die Aufgabe zugrunde, eine elektrische Energiespeichervorrichtung zu entwickeln, diemit einfachsten Mitteln wiederaufladbar ist und die auch die Verwendung von empfindlichen, aber eine hohe spezifische Energiedichte aufweisenden Akkumulatorzellen, insbesondere in normalerweise batteriebetriebenen Taschenlampen und elektrischen Kleingeräten ermöglicht.A flashlight with integrated battery cells is known from WO 01/98705 A1, in which the energy for recharging the battery cells is transferred from a charger to the battery cells by means of an inductive transmission device. A disadvantage of such a flashlight is the high cost of acquisition compared to a conventional, battery-operated flashlight. The high investment does not pay off, especially in the case of flashlights which are only available for emergencies, since the battery cells cannot be replaced and the entire flashlight must therefore always be replaced in the case of degenerated battery cells. The invention is therefore based on the object of developing an electrical energy storage device which can be recharged using the simplest of means and which also makes it possible to use sensitive battery cells which have a high specific energy density, in particular in normally battery-operated flashlights and small electrical devices.
Diese Aufgabe wird durch eine Energiespeichervorrichtung nach Anspruch 1 gelöst.This object is achieved by an energy storage device according to claim 1.
Durch die Verwendung einer in die Energiespeichervorrichtung integrierten, den Ladevorgang durch Regelung mindestens des Ladestroms und/oder der Ladespannung beim Wiederaufladen der Akkumulatorzelle steuernden elektronischen Regel- und Steuervorrichtung wird kein spezielles Ladegerät zum Wiederaufladen der Akkumulatorzelle benötigt. Zum Wiederaufladen der Akkumulatorzelle ist die elektronische Regel- und Steuervorrichtung mit ihrem Eingang mit einem handelsüblichen Netzteil oder direkt, beispielsweise mittels eines Kabels oder über einen Adapter mit einem Zigarrenanzünder in einem Automobil verbindbar. Die an den Typ der Akkumulatorzelle angepasste Regel- und Steuervorrichtung, welche auf die Akkumulatorzelle abgestimmt den Ladestrom und/oder die Ladespannung regelt, erlaubt die Verwendung eines einfachen, mit dem Wechselstromnetz verbindbaren Netzteils zum Wiederaufladen der Akkumulatorzelle. Somit kann der Vorteil der herkömmlichen Taschenlampen genutzt werden, welche einfach herstellbar und in vielen verschiedenen an spezielle Anwendungsfälle angepassten Varianten auf dem Markt erhältlich sind, wobei die erfindungsgemäße Energiespeichervorrichtung in das Batteriefach der Taschenlampe eingelegt, und die Taschenlampe wie gewohnt betrieben werden kann. Für den Benutzer tritt die Problematik des besonderen Umgangs mit speziellen, beispielsweise in Bezug auf das Ladeverfahren empfindlichen Akkumulatorzellen nicht zutage, da die Regel- und Steuervorrichtung, welche den Ladevorgang überwacht und üblicherweise in einem speziellen, auf einen bestimmten Akkutyp abgestimmten Ladegerät angeordnet ist, in die Energiespeichervorrichtung verlagert ist, um den Umgang mit derartigen Akkumulatorzellen zu vereinfachen und sicherer zu gestalten, insbesondere im Hinblick auf eine mögliche Explosionsgefahr, welche bei der Verbindung mancher Akkumulatorzellen mit einem falschen Ladegerät auftritt. Die Batteriefächer von marktüblichen Taschenlampen weisen dabei im wesentlichen nur 4 oder 5 verschiedene Durchmesser auf, und je nach von dem Leuchtmittel benötigter Spannung bestimmte Längen, die der Summe der Einzellängen der Batterien entspricht, die in Serie anzuordnen sind, um die benötigte Betriebsspannung für das Leuchtmittel zu erhalten. Dadurch muss die erfindungsgemäße Energiespeichervorrichtung nur in einer begrenzten Anzahl von verschiedenen Abmessungen hergestellt werden, um für sämtliche marktüblichen Taschenlampen verwendbar zu sein. Hierdurch sind besonders günstige Herstellungskosten derartiger Energiespeichervorrichtungen erzielbar. Durch die integrierte elektronische Regel- und Steuervorrichtung zur Steuerung des Ladevorgangs können Akkumulatorzellen verwendet werden, welche eine wesentlich höhere Kapazität, als herkömmliche Batterien oder marktübliche Akkumulatoren aufweisen, aber nach einem bestimmten Verfahren wiederaufgeladen werden müssen, so dass bei gleich bleibender Einsatzdauer wie mit Batterien ein geringeres Gesamtgewicht, oder bei gleich bleibendem Gesamtgewicht wegen der höheren spezifischer Energiedichte eine längere Einsatzdauer gegenüber dem Batteriebetrieb erzielt werden kann. Darüber hinaus werden keine speziellen Ladegeräte benötigt, da die Regel- und Steuervorrichtung auf die verwendeten Akkuzellen abgestimmt ist, so dass ein einfaches Netzteil zum Wiederaufladen der Energiespeichervorrichtung ausreicht. Die Regel- und Steuervorrichtung kann dabei je nach zu verwendendem Netzteil einen Gleichrichter bei Verwendung eines Wechselstrom abgebenden Netzteils oder eine Diodenschaltung zum Schutz gegen Verpolung bei einem Gleichstrom abgebenden Netzteil oder eine Kombination aus beidem zur Verwendung beliebiger Netzteile enthalten, wobei das Netzteil keine spezielle elektronische Schaltung enthalten muss. Die elektronische Regel- und Steuervorrichtung und die Akkumulatorzelle können dabei beispielsweise mittels eines Schrumpfschlauches oder ähnlichem gemeinsam umhüllt und zusammengehalten werden. Zusätzlich kann durch die Integration der mit einem Netzteil oder einem Ladekabel verbindbaren elektronische Regel- und Steuervorrichtung in die Energiespeichervorrichtung auf eine Anordnung von Steckern und dergleichen außen an der Taschenlampe verzichtet werden, wodurch einerseits die Gefahr einer Beschädigung der Taschenlampe verringert wird, und andererseits kostspielige und aufwändige Modifikationen konventioneller Taschenlampen vermieden werden können.Due to the use of an electronic regulating and control device integrated in the energy storage device and controlling the charging process by regulating at least the charging current and / or the charging voltage when recharging the accumulator cell, no special charger is required for recharging the accumulator cell. To recharge the battery cell, the electronic regulating and control device can be connected with its input to a commercially available power pack or directly, for example by means of a cable or via an adapter, to a cigar lighter in an automobile. The regulating and control device, which is adapted to the type of the battery cell and which regulates the charging current and / or the charging voltage in accordance with the battery cell, allows the use of a simple power supply unit that can be connected to the AC network for recharging the battery cell. Thus, the advantage of conventional flashlights can be used, which are easy to manufacture and are available in many different variants on the market adapted to special applications, the energy storage device according to the invention being inserted into the battery compartment of the flashlight and the flashlight being able to be operated as usual. For the user, there is the problem of special handling special, for example with regard to the charging process sensitive battery cells, since the regulating and control device, which monitors the charging process and is usually arranged in a special charger that is matched to a specific battery type, has been relocated to the energy storage device in order to deal with such Simplify battery cells and make them safer, especially with regard to a possible risk of explosion which occurs when some battery cells are connected to an incorrect charger. The battery compartments of commercially available flashlights have essentially only 4 or 5 different diameters, and depending on the voltage required by the lamp, certain lengths, which correspond to the sum of the individual lengths of the batteries, which are to be arranged in series, in order to achieve the required operating voltage for the lamp to obtain. As a result, the energy storage device according to the invention only has to be manufactured in a limited number of different dimensions in order to be usable for all commercially available flashlights. As a result, particularly low manufacturing costs of such energy storage devices can be achieved. Due to the integrated electronic regulating and control device for controlling the charging process, battery cells can be used which have a considerably higher capacity than conventional batteries or commercially available accumulators, but which have to be recharged according to a certain method, so that the battery life remains the same as for batteries lower total weight, or with a constant total weight due to the higher specific energy density, a longer period of use compared to battery operation can be achieved. In addition, no special chargers are required, since the regulating and control device is matched to the battery cells used, so that a simple power supply unit is sufficient for recharging the energy storage device. Depending on the power supply unit to be used, the regulating and control device can be a rectifier when using an AC power supply unit or contain a diode circuit to protect against polarity reversal in a DC power supply or a combination of both for the use of any power supply unit, the power supply unit not having to contain any special electronic circuit. The electronic regulating and control device and the accumulator cell can be enveloped and held together, for example by means of a shrink tube or the like. In addition, by integrating the electronic regulating and control device that can be connected to a power supply unit or a charging cable into the energy storage device, an arrangement of plugs and the like on the outside of the flashlight can be dispensed with, which on the one hand reduces the risk of damage to the flashlight and on the other hand costs and elaborate modifications of conventional flashlights can be avoided.
Eine vorteilhafte Ausgestaltung der Erfindung ist gekennzeichnet durch ein die Akkumulatorzelle und die elektronische Regel- und Steuervorrichtung aufnehmendes Gehäuse mit an den Querschnitt, beispielsweise den Durchmesser und/oder die Länge eines Batteriefachs des elektrischen Geräts, wie etwa einer Taschenlampe angepassten Außenabmessungen, sowie außen an dem Gehäuse angeordneten, mit den Polen der Akkumulatorzelle verbundenen und in ihrer Position an die Lage der in dem Batteriefach der Taschenlampe angeordneten elektrischen Abgriffe angepassten elektrischen Kontakten. Durch die Verwendung eines Gehäuses wird einerseits erreicht, eine oder mehrere Akkumulatorzellen mit einer beliebigen Form und beliebiger Lage der Pole für die Energiespeichervorrichtung verwenden zu können, da nur das Gehäuse mit seinen Außenabmessungen auf die Abmessungen des Batteriefachs abgestimmt sein muss. Andererseits können am Gehäuse an beliebiger Stelle unabhängig von der Lage der Pole der Akkumulatorzelle Kontakte zur lösbaren elektrischen Verbindung der Energiespeichervorrichtung mit den in dem Batteriefach angeordneten elektrischen Abgriffen angeordnet werden, wobei die Kontakte in ihrer Lage an dem Gehäuse an die Lage der elektrischen Abgriffe in dem Batteriefach angepasst werden können.An advantageous embodiment of the invention is characterized by a housing which accommodates the battery cell and the electronic regulating and control device and which has an external dimension adapted to the cross section, for example the diameter and / or length of a battery compartment of the electrical device, such as a flashlight, and on the outside Housing arranged, connected to the poles of the battery cell and their position adapted to the position of the electrical taps arranged in the battery compartment of the flashlight. By using a housing, it is achieved on the one hand to be able to use one or more battery cells with any shape and any position of the poles for the energy storage device, since only the housing with its external dimensions has to be matched to the dimensions of the battery compartment. On the other hand, contacts for releasable electrical connection of the energy storage device with the electrical taps arranged in the battery compartment can be arranged at any point on the housing regardless of the position of the poles of the battery cell, the Contacts in their position on the housing can be adapted to the position of the electrical taps in the battery compartment.
Eine vorteilhafte Ausgestaltung der Erfindung sieht vor, dass mindestens zwischen der Akkumulatorzelle und dem Gehäuse eine stoßabsorbierende Füllung angeordnet ist, zum Schutz der elektronischen Regel- und Steuervorrichtung sowie der Akkumulatorzellen gegen Beschädigung durch Stöße und Vibrationen.An advantageous embodiment of the invention provides that a shock-absorbing filling is arranged at least between the battery cell and the housing, in order to protect the electronic regulating and control device and the battery cells against damage from shocks and vibrations.
Eine andere vorteilhafte Ausgestaltung der Erfindung ist gekennzeichnet durch eine an dem Gehäuse angeordnete, mit dem Eingang der elektronischen Regel- und Steuervorrichtung verbundene und mit dem Ausgang des Netzteils beispielsweise über eine elektrische Stecker-Buchse-Verbindung verbindbare elektrische Buchse.Another advantageous embodiment of the invention is characterized by an electrical socket arranged on the housing, connected to the input of the electronic regulating and control device and connectable to the output of the power supply unit, for example via an electrical plug-socket connection.
Eine zusätzliche, vorteilhafte Ausgestaltung der Erfindung ist gekennzeichnet durch eine in dem Gehäuse angeordnete, mit dem Eingang der elektronischen Regel- und Steuereinrichtung verbundene Induktionsspule zum berührungslosen Wiederaufladen der Akkumulatorzellen mittels eines von einer Magnetfelderzeugungsvorrichtung erzeugbaren, pulsierenden elektromagnetischen Feldes. Die Induktionsspule erzeugt aus der Feldänderung des von der Magnetfelderzeugungsvorrichtung erzeugten, pulsierenden elektromagnetischen Feldes einen elektrischen Wechselstrom, der von einer Gleichrichterschaltung in der elektronische Regel- und Steuervorrichtung gleichgerichtet und zum Aufladen der Akkumulatorzelle verwendet werden kann. Dabei kann die Magnetfelderzeugungsvorrichtung als eine Halteschale oder als ein Ständer für die Taschenlampe ausgeführt sein, so dass sie gleichzeitig als Ablage und als Ladestation für die Taschenlampe dient, wobei die elektronische Regel- und Steuervorrichtung erkennen kann, ob die Akkuzelle eine Erhaltungsladung, welche die Selbstentladung kompensiert, oder eine Wiederaufladung benötigt. Eine besonders vorteilhafte Ausgestaltung der Erfindung ist gekennzeichnet durch die Verwendung eines Lithium-Ionen-Akkumulators als Akkumulatorzelle, sowie einer den Ladevorgang speziell für den Lithium-Ionen-Akkumulator steuernden elektronische Regel- und Steuervorrichtung. In den meisten alltäglichen Anwendungsfällen steht einer Verwendung von Lithium-Ionen-Akkumulatoren entgegen, dass diese ein besonderes Ladeverfahren benötigen, bei dem zunächst mit einem konstanten Ladestrom bis zum Erreichen einer bestimmten Zellenspannung und anschließend mit einer konstanten Ladespannung bis zum Erreichen einer zulässigen maximalen Zellenspannung geladen wird. Bei einer Nichteinhaltung dieses Ladeverfahrens besteht die Gefahr einer mit einer Explosion verbundenen Zerstörung des Lithium-Ionen-Akkumulators. Die erfindungsgemäße Energiespeichervorrichtung erlaubt die Verwendung von Lithium-Ionen- Akkumulatoren, da das Ladeverfahren von der innerhalb der Energiespeichervorrichtung fest mit den Akkumulatorzellen verbundenen und auf den jeweiligen Akkutyp angepassten elektronischen Regel- und Steuervorrichtung gesteuert wird. Darüber hinaus wird die elektronische Regel- und Steuervorrichtung an die im Vergleich zu herkömmlichen Akkumulatoren, wie beispielsweise Nickel- Cadmium- oder Metall-Hybrid-Zellen höhere Zeilenspannung, welche einer Verwendung von Lithium-Ionen-Akkumulatoren in Verbindung mit herkömmlichen Ladegeräten zusätzlich entgegensteht, angepasst, so dass der Umgang mit dem Hochleistungsakku für den Anwender ungefährlich ist. Insbesondere durch die Verwendung einer oder mehrerer in Serie oder parallel angeordneter Lithium-Ionen- Akkumulatorzellen lässt sich aufgrund der höheren gewichtsspezifischen Energiedichte des Lithium-Ionen-Akkumulators eine höhere Kapazität der Energiespeichervorrichtung und somit eine längere Einsatzdauer der herkömmlich aufgebauten, mit einer derartigen Energieversorgungsvorrichtung betriebenen Taschenlampe im Vergleich zum konventionellen Betrieb mit Batterien oder anderen Akkumulatorzellen erreichen. Insbesondere in Verbindung mit einer wenig Strom konsumierenden LED-Leuchtquelle in einer Taschenlampe ergibt sich so eine sehr hohe Betriebsdauer.An additional, advantageous embodiment of the invention is characterized by an induction coil arranged in the housing and connected to the input of the electronic regulating and control device for contactless recharging of the battery cells by means of a pulsating electromagnetic field that can be generated by a magnetic field generating device. The induction coil generates an electrical alternating current from the change in the field of the pulsating electromagnetic field generated by the magnetic field generating device, which alternating current can be rectified by a rectifier circuit in the electronic regulating and control device and can be used to charge the battery cell. The magnetic field generating device can be designed as a holding shell or as a stand for the flashlight, so that it serves simultaneously as a storage and as a charging station for the flashlight, the electronic regulating and control device being able to recognize whether the battery cell has a trickle charge, which is the self-discharge compensated, or recharging required. A particularly advantageous embodiment of the invention is characterized by the use of a lithium-ion battery as the battery cell, and an electronic regulating and control device that controls the charging process especially for the lithium-ion battery. In most everyday applications, the use of lithium-ion batteries is precluded by the fact that they require a special charging process in which they are charged first with a constant charging current until a specific cell voltage is reached and then with a constant charging voltage until a permissible maximum cell voltage is reached becomes. If this charging procedure is not followed, there is a risk that the lithium-ion battery will be destroyed by an explosion. The energy storage device according to the invention allows the use of lithium-ion batteries, since the charging process is controlled by the electronic regulating and control device which is firmly connected to the battery cells within the energy storage device and is adapted to the respective battery type. In addition, the electronic regulating and control device is adapted to the higher line voltage compared to conventional accumulators, such as, for example, nickel-cadmium or metal hybrid cells, which additionally prevents the use of lithium-ion accumulators in connection with conventional chargers , so that the handling of the high-performance battery is harmless for the user. In particular, by using one or more lithium-ion battery cells arranged in series or in parallel, the higher weight-specific energy density of the lithium-ion battery enables a higher capacity of the energy storage device and thus a longer period of use of the conventionally constructed flashlight operated with such an energy supply device compared to conventional operation with batteries or other accumulator cells. Especially in connection with a little electricity consuming LED light source in a flashlight results in a very long service life.
Kurzbeschreibung der Zeichnung, in der zeigen:Brief description of the drawing, showing:
Figur 1 eine in ein Batteriefach einer Taschenlampe eingesetzte erfindungsgemäße elektrische Energiespeichervorrichtung,FIG. 1 shows an electrical energy storage device according to the invention inserted into a battery compartment of a flashlight,
Figur 2 eine erfindungsgemäße elektrische Energiespeichervorrichtung,FIG. 2 shows an electrical energy storage device according to the invention,
Figur 3 eine zum Wiederaufladen an ein handelsübliches Netzteil angeschlossene erfindungsgemäße elektrische Energiespeichervorrichtung, sowie3 shows an electrical energy storage device according to the invention connected for recharging to a commercially available power pack, and
Figur 4 eine handelsübliche Taschenlampe mit einem Batteriefach und darin angeordneten Batterien.Figure 4 is a commercially available flashlight with a battery compartment and batteries arranged therein.
Eine in Figur 4 dargestellte Taschenlampe 1 verfügt über ein Leuchtmittel 2 und ein Batteriefach 3 zur Aufnahme von Batterien 4. Dabei ist die Länge des Batteriefachs 3 an die benötigte Anzahl von Batterien 4 angepasst, die notwendig sind, um in Serie geschaltet die Betriebsspannung des Leuchtmittels 2 zu erzeugen. Ein als Endkappe ausgeführter Batteriefachdeckel 17 verschließt dabei eine auf der dem Leuchtmittel 2 abgewandten Ende der Taschenlampe 1 angeordnete Batterieentnahmeöffnung. Der Durchmesser des Batteriefachs 3 entspricht etwa dem Durchmesser der Batterien 4. In dem Batteriefach 3 sind mit dem Leuchtmittel direkt oder über einen nicht dargestellten Ein-/Ausschalter verbundene elektrische Abgriffe 5 angeordnet, welche bei in das Batteriefach 3 eingelegten Batterien 4 mit den Polen 6 der Batterien 4 in elektrischer Verbindung stehen, um das Leuchtmittel 2 zu betreiben. Die Lage der elektrischen Abgriffe 5 in dem Batteriefach 3 ist dabei auf die Anordnung der Pole 6 an den Batterien 4 abgestimmt.A flashlight 1 shown in FIG. 4 has an illuminant 2 and a battery compartment 3 for holding batteries 4. The length of the battery compartment 3 is adapted to the required number of batteries 4, which are necessary in order to connect the operating voltage of the illuminant in series 2 to generate. A battery compartment cover 17 designed as an end cap closes a battery removal opening arranged on the end of the flashlight 1 facing away from the illuminant 2. The diameter of the battery compartment 3 corresponds approximately to the diameter of the batteries 4. In the battery compartment 3, electrical taps 5 are arranged directly with the illuminant or via an on / off switch (not shown), which have batteries 6 with the poles 6 inserted in the battery compartment 3 the batteries 4 are in electrical connection to operate the lamp 2. The location of the electrical taps 5 in the battery compartment 3 is matched to the arrangement of the poles 6 on the batteries 4.
Bei der in Figur 1 dargestellten Taschenlampe 1 ist anstelle der Batterien 4 eine erfindungsgemäße elektrische Energiespeichervorrichtung 7 in dem Batteriefach 3 angeordnet.In the flashlight 1 shown in FIG. 1, an electrical energy storage device 7 according to the invention is arranged in the battery compartment 3 instead of the batteries 4.
Die in Figur 2 genauer dargestellte elektrische Energiespeichervorrichtung 7 besteht aus einer elektronischen Regel- und Steuervorrichtung 8, zwei in Serie angeordneten Akkumulatorzellen 9, sowie einem die elektronische Regel- und Steuervorrichtung 8 und die Akkumulatorzellen 9 umfassenden Gehäuse 10. An dem Gehäuse ist eine elektrische Buchse 11 angeordnet, zur Verbindung der elektrischen Energiespeichervorrichtung 7 mit einem handelsüblichen Netzteil 12 zum Wiederaufladen der Akkumulatorzellen 9. Außen an dem Gehäuse 10 sind mit den Polen 6 der Akkumulatorzellen 9 verbundene elektrische Kontakte 13 derart angeordnet, dass bei in das Batteriefach 3 eingelegter Energiespeichervorrichtung 7 die elektrischen Kontakte 13 mit den elektrischen Abgriffen 5 elektrisch verbunden sind. Die elektronische Regel- und Steuervorrichtung 8 ist mit ihrem Eingang mit der elektrischen Buchse 11 und mit ihrem Ausgang mit den Polen 6 der Akkumulatorzellen 9 verbunden.The electrical energy storage device 7 shown in more detail in FIG. 2 consists of an electronic regulating and control device 8, two accumulator cells 9 arranged in series, and a housing 10 comprising the electronic regulating and control device 8 and the accumulator cells 9. An electrical socket is attached to the housing 11 arranged to connect the electrical energy storage device 7 with a commercially available power supply 12 for recharging the battery cells 9. Outside on the housing 10, electrical contacts 13 connected to the poles 6 of the battery cells 9 are arranged such that when the energy storage device 7 is inserted in the battery compartment 3, the electrical contacts 13 are electrically connected to the electrical taps 5. The electronic regulating and control device 8 is connected with its input to the electrical socket 11 and with its output to the poles 6 of the battery cells 9.
In Figur 3 ist zu erkennen, wie die elektrische Energiespeichervorrichtung 7 über ein einfaches, handelsübliches Netzteil 12 aufgeladen wird, indem das Netzteil 12 mit dem an seinem Ausgang angeordneten Stecker 14, der in die elektrische Buchse 11 gesteckt wird, mit der elektrischen Energiespeichervorrichtung verbunden wird. Dabei überwacht die elektronische Regel- und Steuervorrichtung 8, welche mit ihrem Eingang 15 mit der Buchse 11 , und mit ihrem Ausgang 16 mit den Polen 6 der Akkumulatorzellen 9 verbunden ist, den Ladevorgang durch Regelung des Ladestroms und der Ladespannung. Die Akkumulatorzellen 9 sind dabei als Lithium-Ionen-Akkus ausgeführt, wobei die elektronische Regel- und Steuervorrichtung 8 zunächst einen konstanten Ladestrom und anschließend eine konstante Ladespannung an die Akkumulatorzellen 9 anlegt. Beim Laden von Lithium-Ionen-Akkus wird mit Dauerladestrom geladen. Zunächst wird der Lithium-Ionen-Akku mit einem voreingestellten Strom geladen. Erreicht die Akkuspannung die Ladeschlussspannung von 4,2V pro Zelle, wird der Ladestrom verringert. Der Ladestrom wird entsprechend der Ladespannung soweit reduziert, dass die Zellenspannung nicht überschritten wird. Entladen wird bis zu einer Zellenspannung von 2,7V. Auch diese minimale Entladespannung kann von der elektronischen Regel- und Steuervorrichtung 8 überwacht werden, wobei der Stromfluss bei Unterschreiten dieser Schwelle gegebenenfalls unterbrochen werden kann. Eine Zelle entspricht dabei einer Nennspannung von 3,6V, so dass bei zwei Zellen der Ladestrom und die Ladespannung auf einen 7,2V Akku eingestellt sind. Dabei muss das Netzteil keine spezielle Elektronik aufweisen, da der Ladevorgang vollständig von der in die elektrische Energiespeichervorrichtung 7 integrierten elektronischen Regel- und Steuervorrichtung 8 überwacht und ausgeführt wird. Das Netzteil muss somit nur von der Wechselspannung auf 12V Gleichspannung oder pulsierende Gleichspannung herunter transformieren. Dabei ist die in die Energiespeichervorrichtung integrierte und mit der oder den Akkumulatorzellen verbundene elektronische Regel- und Steuervorrichtung 8 auf 12V ausgelegt, so dass auch ein Wiederaufladen im Automobil oder Caravan oder auf einem Boot über das Bordnetz, insbesondere über den Zigarrenanzünder, ohne weiteres möglich ist.In FIG. 3 it can be seen how the electrical energy storage device 7 is charged via a simple, commercially available power supply unit 12 in that the power supply unit 12 is connected to the electrical energy storage device with the plug 14 arranged at its output and which is plugged into the electrical socket 11 , The electronic regulating and control device 8, which is connected with its input 15 to the socket 11 and with its output 16 to the poles 6 of the battery cells 9, monitors the charging process by regulating the charging current and the charging voltage. The battery cells 9 are designed as lithium-ion batteries, the electronic regulating and control device 8 first applying a constant charging current and then a constant charging voltage to the battery cells 9. When charging lithium-ion batteries, the battery is charged with permanent charging current. First, the lithium-ion battery is charged with a preset current. If the battery voltage reaches the final charge voltage of 4.2 V per cell, the charging current is reduced. The charging current is reduced to such an extent that the cell voltage is not exceeded. It is discharged up to a cell voltage of 2.7V. This minimum discharge voltage can also be monitored by the electronic regulating and control device 8, it being possible for the current flow to be interrupted if the temperature falls below this threshold. One cell corresponds to a nominal voltage of 3.6V, so that with two cells the charging current and the charging voltage are set to a 7.2V battery. The power supply unit does not have to have any special electronics, since the charging process is completely monitored and carried out by the electronic regulating and control device 8 integrated in the electrical energy storage device 7. The power supply unit only has to transform down from the AC voltage to 12V DC voltage or pulsating DC voltage. In this case, the electronic regulating and control device 8 integrated in the energy storage device and connected to the accumulator cell or cells is designed for 12V, so that recharging in the automobile or caravan or on a boat is also readily possible via the vehicle electrical system, in particular via the cigar lighter ,
Ein zusätzlicher Vorteil von Lithium-Ionen-Akkus ist, dass sie keinen Memoryeffekt aufweisen. Die elektronische Regel- und Steuervorrichtung 8 kann darüber hinaus auf Ausführung einer Erhaltungsladung ausgelegt sein, welche beispielsweise alle 6 Stunden oder wenn die Akkuspannung auf unter 4,0V pro Zelle abfällt ausgeführt wird. Die Erfindung ist insbesondere im Bereich der Herstellung von Energiespeichervorrichtungen zur Nachrüstung in Taschenlampen gewerblich anwendbar. An additional advantage of lithium-ion batteries is that they have no memory effect. The electronic regulating and control device 8 can also be designed to carry out a trickle charge, which is carried out, for example, every 6 hours or when the battery voltage drops below 4.0 V per cell. The invention is commercially applicable in particular in the field of the production of energy storage devices for retrofitting in flashlights.
BezugszahlenlisteLIST OF REFERENCE NUMBERS
1 Taschenlampe1 flashlight
2 Leuchtmittel 3 Batteriefach Batterie2 bulbs 3 battery compartment battery
5 elektrischer Abgriff Pol elektrische Energiespeichervorrichtung 8 elektronische Regel- und Steuervorrichtung Akkumulatorzelle5 electrical tap pole electrical energy storage device 8 electronic regulating and control device battery cell
10 Gehäuse10 housing
11 elektrische Buchse11 electrical socket
12 Netzteil12 power supply
13 elektrischer Kontakt13 electrical contact
14 Stecker des Netzteils14 Power supply connector
15 Eingang der elektronischen Regel- und Steuervorrichtung15 Input of the electronic regulating and control device
16 Ausgang der elektronischen Regel- und Steuervorrichtung 17 Batteriefachdeckel 16 Output of the electronic regulating and control device 17 battery compartment cover

Claims

Patentansprüche claims
1. Energiespeichervorrichtung (7), insbesondere zur Verwendung in einer Taschenlampe (1), dadurch gekennzeichnet, dass die wiederaufladbare, elektrische Energiespeichervorrichtung (7) in ein Batteriefach (3) eines elektrischen Geräts (1) einsetzbar ist und mindestens eine Akkumulatorzelle (9) sowie eine mit ihrem Ausgang (16) mit den elektrischen Polen (6) der Akkumulatorzelle (9) verbundene elektronische Regel- und Steuervorrichtung (8) umfasst, welche zum Wiederaufladen der Akkumulatorzelle (9) mit ihrem Eingang (15) mit einem Netzteil (12) verbindbar ist.1. Energy storage device (7), in particular for use in a flashlight (1), characterized in that the rechargeable, electrical energy storage device (7) can be inserted into a battery compartment (3) of an electrical device (1) and at least one accumulator cell (9) as well as an electronic regulating and control device (8) connected with its output (16) to the electrical poles (6) of the battery cell (9), which for recharging the battery cell (9) with its input (15) with a power supply unit (12 ) is connectable.
2. Energiespeichervorrichtung nach Anspruch 1 , gekennzeichnet durch ein die Akkumulatorzelle (9) und die elektronische Regel- und Steuervorrichtung (8) umschließendes Gehäuse (10) mit an den Querschnitt und/oder die Länge des Batteriefachs (3) einer Taschenlampe (1) angepassten Außenabmessungen, sowie außen an dem Gehäuse (10) angeordneten, mit den Polen (6) der Akkumulatorzelle (9) verbundenen und in ihrer Position an die Lage der in dem Batteriefach (3) der Taschenlampe (1) angeordneten elektrischen Abgriffe (5) angepassten elektrischen Kontakten (13). 2. Energy storage device according to claim 1, characterized by a housing (10) surrounding the battery cell (9) and the electronic regulating and control device (8) with a cross-section and / or the length of the battery compartment (3) of a flashlight (1) External dimensions, as well as on the outside of the housing (10), connected to the poles (6) of the battery cell (9) and adjusted in position to the position of the electrical taps (5) arranged in the battery compartment (3) of the flashlight (1) electrical contacts (13).
3. Energiespeichervorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass mindestens zwischen der Akkumulatorzelle (9) und dem Gehäuse (10) eine stoßabsorbierende Füllung angeordnet ist.3. Energy storage device according to claim 2, characterized in that a shock absorbing filling is arranged at least between the battery cell (9) and the housing (10).
4. Energiespeichervorrichtung nach Anspruch 2 oder 3, gekennzeichnet durch eine an dem Gehäuse (10) angeordnete, mit dem Eingang der elektronischen Regel- und Steuervorrichtung (8) verbundene und mit dem Ausgang (14) des Netzteils (12) verbindbare elektrische Buchse (11).4. Energy storage device according to claim 2 or 3, characterized by an arranged on the housing (10), with the input of the electronic regulating and control device (8) connected and with the output (14) of the power supply unit (12) connectable electrical socket (11 ).
5. Energiespeichervorrichtung nach Anspruch 2 oder 3, gekennzeichnet durch eine in dem Gehäuse (10) angeordnete, mit dem Eingang der elektronischen Regel- und Steuereinrichtung (8) verbundene Induktionsspule zum berührungslosen Wiederaufladen mittels eines von einer Magnetfelderzeugungsvorrichtung erzeugbaren, pulsierenden elektromagnetischen Feldes.5. Energy storage device according to claim 2 or 3, characterized by an arranged in the housing (10), with the input of the electronic regulating and control device (8) connected induction coil for contactless recharging by means of a pulsating electromagnetic field that can be generated by a magnetic field generating device.
6. Energiespeichervorrichtung nach einem der vorhergehenden Ansprüche, gekennzeichnet durch die Verwendung eines Lithium-Ionen-Akkumulators als Akkumulatorzelle (9). 6. Energy storage device according to one of the preceding claims, characterized by the use of a lithium-ion battery as the battery cell (9).
PCT/EP2005/006676 2004-06-22 2005-06-21 Energy storage device WO2005124963A2 (en)

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