FR2521792A1 - DEVICE FOR CHARGING BATTERIES - Google Patents

Abstract

THE INVENTION CONCERNS A DEVICE FOR CHARGING BATTERIES OF DIFFERENT NOMINAL CAPACITIES FROM A STANDARD CONSTANT CURRENT CHARGER, PRESENTING A POWER SUPPLY TRANSFORMER 4 AND A RECTIFIER 5 EQUIPPED WITH A REGULATOR 7. ACCORDING TO THE INVENTION, BEFORE THE BATTERIES TO BE CHARGED 3 A PROGRAMMING MODULE 2 IS INTERPOSED INTO THE BATTERIES WHICH, WHEN CONNECTED TO CHARGER 1, AUTOMATICALLY ADAPTS THIS TO THE CHARGING CURRENT NECESSARY FOR THE BATTERIES. TO THE PROGRAMMING MODULE 2 IS ADDED A 12 SEQUENCE CONTROL THAT RECEIVES ITS OPERATING VOLTAGE FROM CHARGER 1 AND WHICH CONTROLS A MAINTENANCE CHARGING CIRCUIT. APPLICATION TO CHARGERS FOR BATTERIES OF VARIOUS CAPACITIES.

Description

The invention relates to a device for charging batteries of

  different nominal capacities from a

  standard constant current charger with a transfor-

  power supply and a rectifier equipped with a regulator.

  In order to charge batteries of different nominal capacities and operating with a maintenance charge, it is known to manually switch the charger on the capacity necessary for the type of battery to be charged.

  and, for operation with a maintenance charge, to

  again on the maintenance charge current through the battery voltage (US Patent 3,278,823) When switching the charger on the capacity necessary for the type

  of the battery in question, there is a risk of

  their false, which means that the battery is charged

  enough or excessively, the new switching on the maintenance charge current through the voltage

  the battery is not reliable either because in the event of

  certain battery cells, the voltage corresponding to

  to a fully charged battery is not reached

  and switching does not happen at all.

  This is why the invention aims to provide, for rechargeable batteries having different nominal capacities, a device which on the one hand adapts completely.

  the type of battery considered to a standard charger to

  and, on the other hand, for operation with a maintenance charge, ensures a new commutation

  the maintenance charge current at a prescribed time.

  This problem is solved, according to the invention, thanks to the fact that before the batteries to be charged is interposed a

  programming module built into batteries and which,

  that it is connected to the charger, automatically adpate that

  aware of the charge required by the batteries, and thanks

  the fact that the programming module is accompanied by a

  sequence command that receives from the charger its service voltage

  and which controls a maintenance charge circuit.

  The advantages obtained thanks to the invention reside in particular in the fact that, the programming module according to the invention being an assistant to the rechargeable battery,

  charging current of a standard charger is suitable for

  tomatically to the type of battery in question and that

  following, the switching on the maintenance charge current

  is performed independently of the battery voltage.

  With a single charger, you can load a large number

  batteries with the most diverse nominal capacities

  his. An exemplary embodiment of the invention is described more precisely below with the aid of the drawings on which

  Figure 1 shows the assembly of a first example

full of execution and

  Figure 2 the installation of another example of

embodiment of the invention.

  As can be seen in Figure 1, the provision

  It consists of two units, namely the module of

  constant current g and the programming module 2

  followed by the battery 3 The constant current charge module

  it is formed of a power transformer 4, a

  rectifier 5, a filter capacitor 6 and a

  integrated dimmer connected as regulator to const 7 and followed by a resistor 8 which adjusts the regulator 7 to the lowest charge current to be provided. The supply transformer 4 and the rectifier 5 and the regulator 7 must be dimensioned such that the constant current charger 1 is able to provide the strongest

  charging current to be expected and the charging voltage corresponding to

  for batteries to be charged differently

  can be coupled to the programming module 2 by

  via a three-conductor output circuit 9.

  The programming module 2, after which the rechargeable battery 3 is connected, consists essentially of a resistor 10, a resistor connected thereto following the first and a sequence control 12 which controls the

  maintenance charge current and includes as essential element

  a timer connected in parallel in the charging circuit between the two resistors 10 and 11 The resistor 10 is sized according to the type of battery in question so that when the charger is connected, it can pass either the normal current charging is still an increased charging current for a corresponding fast charge

  the nominal capacity of the battery in question.

  11 is sized for maintenance charge operation in accordance with the maintenance charge current required in each case When programming module 2 is connected to constant current charging module 1,

  the resistor 10 is connected in parallel with the resistor 8.

  Automatically, the constant current load module 1 is programmed on the charging current required by the battery

  and the timer 12 shunts the resistance 11 and the short-

  The timer 12 receives from the load module 1 the

  required operating voltage, and the charging time

  In advance, the timer 12 is counted from the moment when the programming module 2 is connected to the load module 1. After the time set for the normal or fast load has expired, the timer 12 switches to the

  operation with the maintenance charge

  circuit or the shunt of the resistor 11 are removed and now the resistors 10 and it program the connected load module 1 on the charging current required for the maintenance charge A diode 13 prevents current from being taken from the battery charged, for the timer

  12 The programming is done by the third driver.

  Figure 2 shows another advance execution.

  tagger of the invention idea and more specifically, here, the sequence control 12 which controls the maintenance charge current is added to the charger 1 The sequence command

  essentially consists of an optocoupler 14, a

  15 and a clock 16 The operation is as follows

  before: when the programming module 2 is plugged into the load module 1, the optocoupler 14 sets the timer 15 to zero via the reset connection and starts it for the "charging" mode. permanent "After the time set in the timer 15, for example

  14 hours for normal charge, the mode of "permanent charge"

  As timer 15 switches off the optocoupler 14 via another timer output, the clock is released and then assumes, to the rhythm of the timer.

  of its programmed cyclical report, the mode "charge d'entre-

  in which the clock 16 plugs and disconnects the opto-

  coupler 14 periodically With this embodiment, it does not switch resistance in the programming module 2.

Claims (1)

1 Device for charging batteries of different nominal capacities from a standard constant current charger having a power transformer and a rectifier equipped with a regulator, characterized in that before the batteries to charge (3) is interposed a programming module (2) integrated in the batteries and which, when connected to the charger (1) automatically adapts it to the charging current required by the batteries and in that the programming module (2) is accompanied by a sequence control (12) which receives from the charger (1) its operating voltage and which controls a maintenance load circuit. 2 Device according to claim 1, characterized in that the programming module (2) has two resistors (10, 11) associated with the batteries (3) and which, when the programming module (2) is connected to the battery (2), geur (1) are connected in parallel with a resistor (8) of the charger and set the charger to the charge current required by the batteries. 3 Device according to one of claims 1 and 2, characterized in that between the two resistors (10, 11) of the programming module (2) is connected, in parallel with the charging circuit, a timer (12) which receives from the charger (1) its operating voltage. Device according to claim 1, characterized in that the sequence control (12) which controls the maintenance charge current is added to the charger (1). Device according to one of the claims   1 and 4, characterized in that the sequence control (12)   essentially consists of an optocoupler (14), a half   nuterie (15) and a clock (16) which are connected in para-   It is connected to the constant current charging circuit.