WO2007090386A1 - Dispositif pour l'inversion automatique de la tension d'une batterie polarisée - Google Patents

Dispositif pour l'inversion automatique de la tension d'une batterie polarisée Download PDF

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Publication number
WO2007090386A1
WO2007090386A1 PCT/DE2007/000245 DE2007000245W WO2007090386A1 WO 2007090386 A1 WO2007090386 A1 WO 2007090386A1 DE 2007000245 W DE2007000245 W DE 2007000245W WO 2007090386 A1 WO2007090386 A1 WO 2007090386A1
Authority
WO
WIPO (PCT)
Prior art keywords
fets
battery
channel mos
mos
terminals
Prior art date
Application number
PCT/DE2007/000245
Other languages
German (de)
English (en)
Inventor
Peter Erwin
Jürgen SARTOR
Original Assignee
Weinmann Geräte für Medizin GmbH & Co. KG
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 Weinmann Geräte für Medizin GmbH & Co. KG filed Critical Weinmann Geräte für Medizin GmbH & Co. KG
Publication of WO2007090386A1 publication Critical patent/WO2007090386A1/fr

Links

Classifications

    • 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
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0034—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using reverse polarity correcting or protecting circuits

Definitions

  • the invention relates to a device for supplying energy to an electrical load with energy of a DC voltage source, which is taken from at least one battery and the polungsunoren connection of the battery has a Polwender which is at least partially formed of semiconductor elements.
  • batteries In particular, in the field of portable devices is often a power supply using batteries. These may be disposable batteries or rechargeable batteries, so called accumulators. Often, the batteries have standardized battery contacts that allow the batteries to be inserted into battery holders in both a correct and a wrong polarity. If the batteries are inserted with the wrong polarity, the supplied battery voltage with the opposite polarity will reach a connected -. O _
  • the object of the present invention is to construct a device of the type mentioned in the introduction in such a way that occurring losses are reduced.
  • the semiconductor elements are designed as MOS FETs.
  • this relates to the operating current-carrying semiconductor elements.
  • MOS-FETs By using the MOS-FETs, it is possible to provide an extremely simple electronic circuit that uses the polarity of incorrectly connected batteries in the correct direction with almost no loss.
  • the MOS-FET transistors allow a nearly lossless switch function, so that when compared with conventional diodes only a negligible voltage drops across the circuit.
  • a typical residual resistance of a MOS-FET is in the range of 25 milliohms. This results in a load Ström of about one ampere only 50 millivolts of loss voltage arise.
  • the pole turner built up from the MOS FETs does not require any operating current itself, so that an efficiency of almost 100% is realized.
  • a structure of the Polwenders can be done to save space in a simple manner and with commercially available transistor pairs. It is also possible to manufacture the Polwender already manufacturer as a compact component that requires only a small footprint and has four ports.
  • the Polwender invention can be used for all conventional battery voltages.
  • a simple and inexpensive circuit construction is provided by using four MOS-FETs.
  • Proper electronic functionality is achieved by using two N-channel MOS FETs and two P-channel MOS FETs, preferably complementary.
  • the pole turner has a symmetrical circuit structure.
  • a simple circuit construction is achieved, in particular, in that the MOS-FET transistors T1, T2, T3 and T4 are connected with their source and drain terminals forming a closed circuit.
  • the two N-channel MOS FETs and the two P-channel MOS FETs are each arranged next to one another.
  • the facing terminals of the N-channel MOS FETs provide the negative supply terminal to the load.
  • the mutually facing terminals of the P-channel MOS-FETs provide the positive supply terminal for the consumer.
  • a connection of the battery or the accumulator is effected in that connections are provided for the battery at the connections between in each case one of the N-channel MOS FETs and one of the P-channel MOS FETs.
  • the supply terminals for the battery are additionally connected in each case to both gates of the circuitry-oppositely arranged MOS-FETs.
  • a preferred application is that the Polwender is designed for use in the field of a medical device.
  • 1 is a circuit diagram of a built-up of four MOS-FETs Polwenders
  • Fig. 3 is a plan view of a device with portable power supply and Fig. 4 shows another device with battery compartment and removed battery compartment cover.
  • FIG. 1 shows a polarity reverser (1) which serves to supply a supply voltage provided by a battery (2) with a predetermined polarity to a load (3).
  • the battery (2) is in this case connected to the terminals a) and c) of the polarity reverser (1).
  • the consumer (3) is connected to the terminals b) and d) of the polarity reverser.
  • the pole turner (1) has four transistors Tl, T2, T3 and T4.
  • the transistors Tl and T4 are as N-
  • the P-channel transistor T3 remains blocked because at any time via the terminal a) at its gate opposite its source terminal b) a voltage is applied which is either greater than or equal to zero.
  • a voltage is applied which is either greater than or equal to zero.
  • the diode becomes conductive, therefore, the terminal d) assumes approximately the negative potential of the battery of terminal c).
  • the same potential, which is at the terminal a) is also applied to the gate terminal of the N-channel transistor T4.
  • the transistor T4 is also controlled by, so that its own diode is bridged and at the terminal d) the same potential as at the terminal c) is applied.
  • the N-channel transistor Tl remains blocked, since at any time via the terminal c) at its gate opposite its source terminal d) is applied a voltage which is either less than or equal to zero.
  • the positive potential from terminal c) is present at terminal b) and the more negative potential from terminal c) at terminal d).
  • the through-connected state of the transistors is maintained until the voltage between the terminals a) and c) has fallen below the gate threshold voltage of the transistors. With such a decrease, the transistors are turned off.
  • the battery (2) or a series connection of several batteries (2) in any polarity is connected to the battery contact of the circuit.
  • VBAT is the pole-reversed positive pole and GND the corresponding negative pole.
  • the circuit here has two inputs and two outputs, which are composed of two MOS-FET pairs Vl, consisting of VlA and VlB in one component, and V2, consisting of V2A and V2B in one component.
  • the components of the circuit according to the invention which are framed by a frame (4), serve the Pol Listewuntation.
  • the pole turner (1) can be realized in a component with four terminals.
  • each battery (2) associated with a pole reverser (1) when using at least two batteries (2), each battery (2) associated with a pole reverser (1) according to the invention.
  • the number of Polwender (1) here is always equal to the number of batteries (2) to ensure a Polassemble for each battery (2).
  • a series connection of the batteries (2) is realized in that the individual inverters (2) associated Polwender (1) are constructed in a series circuit. This allows the power supply of a consumer regardless of the polarity of the batteries used (2). The user of a device in which the circuit according to the invention finds use can therefore insert the batteries (2) in any polarity.
  • This circuit is executed, for example, in that one cable from the positive pole and one cable from the negative pole are routed from each battery (2) to a circuit board where they are connected to the board via a plug. In the area of the board is each battery (2) associated with a Polwender (1).
  • the invention of FIG. 3 finds application in powering a portable device that allows a user to determine body parameters.
  • the device consists of a housing upper shell (10) made of plastic with a recess for a display (6) and recesses for control buttons (7).
  • the socket is for receiving a sensor cable.
  • the socket (5) can be equipped as a receiving module for a radio transmission of sensor signals.
  • an interface (13) for data transfer is arranged according to FIG. 4.
  • a receiving device (15) for a power supply (14), for example accumulators, is located on the rear side.
  • a cover (11) closes the Receiving device (15) for the power supply (14).
  • the dimensions of the device according to the invention are preferably less than 25 cm in length and less than 20 cm in depth and less than 20 cm in width.
  • the volume of the device is preferably less than 1500 cc.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

Le dispositif selon la présente invention sert à alimenter un récepteur électrique en courant fourni par une source de tension continue de polarité correcte. La tension est prélevée à au moins une batterie. Ce dispositif comporte, pour la connexion de la batterie indépendamment de la polarité, un inverseur de pôles formé au moins partiellement par des éléments semi-conducteurs. Les éléments semi-conducteurs sont constitués par des MOS-FET.
PCT/DE2007/000245 2006-02-09 2007-02-08 Dispositif pour l'inversion automatique de la tension d'une batterie polarisée WO2007090386A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006006209 2006-02-09
DE102006006209.4 2006-02-09

Publications (1)

Publication Number Publication Date
WO2007090386A1 true WO2007090386A1 (fr) 2007-08-16

Family

ID=38230116

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2007/000245 WO2007090386A1 (fr) 2006-02-09 2007-02-08 Dispositif pour l'inversion automatique de la tension d'une batterie polarisée

Country Status (1)

Country Link
WO (1) WO2007090386A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015002718A1 (fr) * 2013-07-01 2015-01-08 Apple Inc. Circuit de détection de polarité
AT16411U1 (de) * 2015-04-27 2019-08-15 Tridonic Gmbh & Co Kg Leuchtmittel-Konverter mit Verpolschutzschaltung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4423456A (en) * 1981-11-13 1983-12-27 Medtronic, Inc. Battery reversal protection
US5623550A (en) * 1995-03-08 1997-04-22 Etymotic Research, Inc. Battery power supply circuit which supplies correct power polarity irrespective of battery orientation
DE10042583A1 (de) * 2000-08-30 2002-03-28 Infineon Technologies Ag Verpolschutzschaltung
EP1564618A1 (fr) * 2004-02-14 2005-08-17 Jungheinrich Aktiengesellschaft Circuit pour la correction du facteur de puissance dans alimentations de puissance à découpage, chargeurs et similaires.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4423456A (en) * 1981-11-13 1983-12-27 Medtronic, Inc. Battery reversal protection
US5623550A (en) * 1995-03-08 1997-04-22 Etymotic Research, Inc. Battery power supply circuit which supplies correct power polarity irrespective of battery orientation
DE10042583A1 (de) * 2000-08-30 2002-03-28 Infineon Technologies Ag Verpolschutzschaltung
EP1564618A1 (fr) * 2004-02-14 2005-08-17 Jungheinrich Aktiengesellschaft Circuit pour la correction du facteur de puissance dans alimentations de puissance à découpage, chargeurs et similaires.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015002718A1 (fr) * 2013-07-01 2015-01-08 Apple Inc. Circuit de détection de polarité
US9506955B2 (en) 2013-07-01 2016-11-29 Apple Inc. Polarity sensing circuit
AT16411U1 (de) * 2015-04-27 2019-08-15 Tridonic Gmbh & Co Kg Leuchtmittel-Konverter mit Verpolschutzschaltung

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