DISPOSITIF DE CHARGE POUR UN ACCUMULATEUR

Un dispositif destiné à charger un accumulateur 1 comporte notamment, un circuit de génération de tension 25 branché à un dispositif 24 sensible à la température de l'accumulateur, et un circuit de génération de courant 27 branché à un dispositif 26 sensible à la température ambiante. Ces circuits commandent le circuit de commutation 23 qui commande la charge de l'accumulateur. Cette configuration assure une charge optimale en dépit des variations de la température ambiante et de la température de l'accumulateur. (CF DESSIN DANS BOPI) A diode is disposed in the vicinity of a rechargeable battery. A current is applied to the diode from a current generating circuit. The current generating circuit comprises a thermistor which is responsive to the ambient temperature, so that a current associated with the ambient temperature is applied from the current generating circuit to the diode. The diode gives rise to a forward voltage drop, which is changeable as a function of the battery temperature. Accordingly, the forward voltage drop across the diode is changeable as a function of the ambient temperature and the battery temperature. The forward voltage drop across the diode is amplified to be used as a reference voltage. On the other hand, the rechargeable battery is supplied with a charging current from a power supply through a thyristor. The gate electrode of the thyristor is connected to receive the reference voltage and the cathode of the thyristor is connected to the battery. Accordingly, the thyristor is turned off if and when the difference between the reference voltage and the battery voltage becomes smaller than the switching voltage of the thyristor.