Abstract:
A multi-battery automatic charging circuit with individual regulator is further provided with one secondary or more than one output interface to convert an AC source via a rectifier into a DC charging source, thus to supply power to an external rechargeable device or a DC load of different voltage through a tap of the circuit specific voltage; or alternatively, a primary battery, or a rechargeable battery provided with storage capacity, or any other rechargeable device generally available in the market is placed in the battery holder provided otherwise for the placement of rechargeable batteries to charge the external rechargeable device or to supply power to a DC load.

Description:
BACKGROUND OF THE INVENTION 
   (a) Field of the Invention 
   The present invention is related to an improvement of a Individually Adjustable Type Automatic Charging Circuit For Multiple Batteries disclosed in U.S. patent application Ser. No. 09/156,618 (U.S. Pat. No. 6,097,174) by further providing one secondary or more than one output interface to convert an AC source via a rectifier into a DC charging source, thus to supply power to an external rechargeable device or a DC load of different voltage through a tap of the circuit specific voltage; or alternatively, a primary battery, or a rechargeable battery provided with storage capacity, or any other rechargeable device generally available in the market is placed in the battery holder provided otherwise for the placement of rechargeable batteries to charge the external rechargeable device or to supply power to a DC load. 
   (b) Description of the Prior Art 
   The conventional charger can only charge one type of rechargeable battery alone. When two or more than two batteries of difference end voltages due to different residual capacity are charged in parallel not at the same time, the battery placed in the charger at a later time will be charged first, and the one placed earlier and having been charged for a certain time will be delayed in charging due to the voltage difference. 
   SUMMARY OF THE INVENTION 
   The primary purpose of the present invention is to provide one secondary or more than one output interface to convert AC source via a rectifier into DC charging source, thus to supply power to an external rechargeable device or a DC load of different voltage through a tap of the circuit specific voltage; or alternatively, a primary battery, or a rechargeable battery provided with storage capacity, or any other rechargeable device generally available in the market is placed in the battery holder provided otherwise for the placement of rechargeable batteries to charge the external rechargeable device or to supply power to a DC load. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
       FIG. 1  is a schematic view showing a serial circuit of the present invention. 
   

   DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
   A multi-battery automatic charging circuit with individual regulator of the present invention as illustrated in  FIG. 1  is related to a DC source or one that is controlled by a regulator, or one that is converted from AC of the prior art, comprised of:
         an AC transformer  100 : with its primary side provided for AC input and the secondary side for AC output; and the AC transformer  100  is provided as an optional as required by the circuit while an input AC source may be forthwith used;   an AC limit resistance  101 : a capacitor or an inductive resistance to prevent shortage on the load side, or a hybrid AC limit resistance comprised of those two types or more than two types including the capacitor resistance and inductive resistance, to be connected in series on the AC source side of the transformer or between the AC source and a rectifier  102  in the absence of a limit resistance at the terminal of the DC source;   a filter capacitor  800 : related to an optional device, comprised of a conventional capacitor;   a DC limit resistance  101 ′: related to an optional device; when the source relates to a DC source, or that converted from AC via the rectifier  102  and the filter capacitor  800 , and the AC limit resistance  101  is not provided in series on the AC side, a DC limit resistance comprised of a resistance, or an active transistor and a drive circuit is connected in series between the DC source and the load side, or the a conventional regulator circuit or regulator IC is provided before the output.       

   The multi-battery automatic charging circuit with individual regulator of the present invention includes:
         a Zener regulator  900 : comprised of a Zener diode or any other regulator electronic circuit, and connected in parallel to both sides of the individual regulator series circuit;   an individual regulator circuit in series includes:
           a divider regulator  1100 ,  1200 ,  1300 ,  1400 ,  1500 ,  1600 : comprised of a positive going diode or a Zener diode connected in series; two or more than two units of a charging connector or battery holder being provided to match two or more than two storage units, and allowing individual or simultaneous placement of batteries to be charged or removed as desired; and   a primary bias resistances  1110 ,  1201 ,  1301 ,  1401 ,  1501 ,  1601 : to be provided as optional depending on the charging voltage required; comprised of a resistance to be connected in series with the corresponding divider regulator  1100 ,  1200 ,  1300 ,  1400 ,  1500 ,  1600  in series in the sequence of  1100 ,  1101 ,  1200 ,  1201 ,  1300 ,  1301  . . .  1600 ,  1601  to form a graded divider circuit; wherein,  1100  and  1101  being connected in series to become a first individual regulator unit;  1200  and  1201 , the second;  1300  and  1301 , the third;  1400  and  1401 , the fourth;  1500  and  1501 , the fifth; and  1600  and  1601 , the sixth individual regulator unit with all the six individual regulator units connected in series while both ends of each individual regulator unit are connected to the storage unit comprised of a battery, charging connector, or the battery holder to provide charging voltage;   
           an HV output tap  107 : related to the higher charging voltage outputted from both ends of each of two or more than two of those dividers regulator  1100 ,  1200 ,  1300 ,  1400 ,  1500 ,  1600 , and a diode  108  may be connected in series to the output end to prevent inverse discharging when required;   a negative going output diode  105 : provided between each storage unit and the output end of the HV output tap  107 , connected in series to the positive-going series output polarity of the storage unit comprised of a battery, charging connector or battery holder in the positive direction of the output current, so to execute external power output from the battery in the storage unit;   a diverter resistance  103 : to be connected in parallel with both ends of the individual regulator circuit when the charging current supplied by each charging connector must be of different rated amperage, so to relatively allot the amperage respectively outputted to the diverter resistance  103  and the individual regulator circuit connected in parallel with the diverter resistance  103 ; to further prevent inverse discharging by the storage unit via the diverter resistance  103 , the positive polarity of a diode  104  is first connected in series with the individual regulator circuit to be connected in parallel with the diverter resistance while another end of the diode  104  is connected in parallel with the diverter resistance  103 ; and the diverter resistance  103  is provided as an optional depending on the functional requirements.       

   The multi-battery automatic charging circuit with individual regulator comprised of those circuit devices as described above maybe forthwith comprised of any Pb, NiH, NiZn, NiFe, Li battery or any other device with storage and discharging capacity, or comprised of multiple storage units  310 ,  320 ,  330 ,  340 ,  350 ,  360  formed by multiple charging connectors or battery holders matching those batteries described above. 
   Depending on the following optional functions, additional devices maybe provided to the multi-battery automatic charging circuit with individual regulator including:
         a diode  106 ,  108  to prevent inverse discharging: to be connected in series to each storage unit depending on the direction of the charging current of each of those storage units  310 ,  320 ,  330 ,  340 ,  350 ,  360  to prevent inverse discharging; and may be or may not be provided depending on the requirements of the circuit;   multiple light emit display circuits  210 ,  220 ,  230 ,  240 ,  250 ,  260 : each comprised of an LED or bulb that converts electric energy into optical energy as may be required respectively by multiple matching limit resistances  1103 ,  1203 ,  1303 ,  1403 ,  1503 ,  1603  connected in series.       

   In the individual regulator circuit described above that may be provided with an optional light emit display circuit to display the charging status of the storage unit, the light emit display circuit displays at a lux in relation to the changed terminal voltage in the storage unit; wherein, the light emit display circuits  210 ,  220 ,  230 ,  240 ,  250 ,  260  are connected to the individual regulator circuit as follows:
         (1) to be directly connected in parallel with the battery or the charging connector or the battery holder of the storage unit; or   (2) alternatively, an additional secondary bias resistances,  1102 ,  1202 ,  1302 ,  1402 ,  1502 ,  1602  is connected in series to each individual regulator circuit to regulate the drive bias set for the respectively light emit display circuits  210 ˜ 260  as required.       

   Those primary bias resistances  1101 ,  1201 ,  1301 ,  1401 ,  1501  and  1601 , secondary bias resistances  1102 ,  1202 ,  1302 ,  1402 ,  1502  and  1602 , limit resistances  1103 ,  1203 ,  1303 ,  1403 ,  1503  and  1603  and diverter resistance  103  may be as applicable comprised of conventional resistances, or that provided with positive temperature coefficient (PTC) or negative temperature coefficient (NTC). 
   Furthermore, those individual regulators connected in series may be made into a circuit connected in series and parallel including two or more than two sets each comprised of an individual regulator and a storage unit, or charging connector or battery holder connected in series. 
   The successful development of various types of portable electric appliances in recent years, the demand of disposal consumer battery is on the increase. However, the disposal battery is expensive and a source of environmental pollution. The multi-battery automatic charging circuit with individual regulator of the present invention is designed with two or more than two charging connectors or battery holders to charge one battery or multiple batteries of different residual capacity with the individual regulator allowing individual battery to be charged or removed as desired like a cafeteria to serve customers of different needs at different time, thus to make charging batteries even more convenient. Therefore, this application for a utility patent is duly filed accordingly.