Abstract:
An integrated induction battery charge apparatus transforms electric energy and magnetic energy according to electromagnetic induction principle to charge an induction charge battery. It integrates the conventional charge batteries to become an induction charge battery so that users may carry only one charge apparatus to charge the induction batteries of different specifications, thereby improve use convenience.

Description:
FIELD OF THE INVENTION  
       [0001]     The present invention relates to an induction battery charge apparatus and particularly to an integrated induction battery charge apparatus.  
       BACKGROUND OF THE INVENTION  
       [0002]     These days, portable electronic devices are very popular, due to their use convenience. However, charging methods still are a troublesome issue remained to be resolved.  
         [0003]     Conventional charging methods generally adopt a conductive charging approach. It is accomplished by connecting metal contacts, to direct electric energy into the battery for charging. Such an approach has charging environment restrictions (such as submerged). It also has to couple with dedicated chargers to match various battery specifications (such as 18.5 V, 15 V, 10 V, etc.), and many interface specifications (such as 5-pin legs, 6-pin legs, 7-pin legs, etc.).  
         [0004]     When charging is required, a dedicated charging dock or dedicated DC power supply has to be provided. If the batteries of multiple number of portable electronic devices require charging, users have to prepare many types of dedicated chargers. This is very inconvenient.  
       SUMMARY OF THE INVENTION  
       [0005]     In view of the problems set forth above, the primary object of the invention is to provide an integrated induction battery charge apparatus. It is charged by induction. It can perform charging in environments where conventional conductive chargers can&#39;t. And it also can charge batteries of different interface specifications.  
         [0006]     In order to achieve the foregoing object, the integrated induction battery charge apparatus according to the invention includes a first induction module, a second induction module, a detection module, an activation module, a rectification module and a filter module. After the charge apparatus has detected the induction battery, it starts the charging process. The second induction module at the battery end detects an AC voltage, which is rectified and filtered, and a DC voltage is generated to charge the battery. Through induction charging without contacts, it can perform a charging process in the environments (such as submerged) where conventional conductive charge methods can&#39;t be performed.  
         [0007]     The second induction module is at the battery end to enable the induction charge apparatus to charge induction batteries of different specifications. Hence users need to carry only one type of charger. This resolves the problem of preparing dedicated chargers for different specifications of batteries. This is more convenient.  
         [0008]     The foregoing, as well as additional objects, features and advantages of the invention will be more readily apparent from the following detailed description, which proceeds with reference to the accompanying drawings. 
     
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0009]     The invention will become more fully understood from the detailed description given herein below illustration only, and thus are not limitative of the present invention, and wherein:  
         [0010]      FIG. 1  is a functional block diagram of the invention; and  
         [0011]      FIG. 2  is a circuit diagram of the invention. 
     
    
     DESCRIPTION OF THE PREFERRED EMBODIMENT  
       [0012]     Refer to  FIG. 1  for a functional block diagram of the invention. The integrated induction battery charge apparatus according to the invention aims at employing electromagnetic induction principles, to charge chargeable batteries. It includes a detection module  10 , an activation module  20 , a first induction module  30 , a second induction module  60 , a rectification module  70 , a filter module  80  and a charge battery  90 .  
         [0013]     The detection module  10  is located at a charging end  50 , to send a detection signal to a battery end  100  and receive a response signal, to indicate the presence of the charge battery  90 , and generate an activation signal to start the charging process. The module uses the detection approach to control the electromagnetic induction charge process and to prevent the charging end  50  from continuously sending out induction electromagnetic waves when the charging process stops. Further, it uses the detection approach to avoid causing interference to the signal transmission or receiving devices in the surrounding area, and also to avoid causing a harmful effect to the human body. The detection module  10  detects by electromagnetic induction or piezoelectric induction.  
         [0014]     The activation module  20  is connected to the detection module  10 . After having received the activation signal, a charge power supply is set ON to provide the required electric power for the first induction module  30 . The activation module  20  consists of at least one metal-oxide-semiconductor (MOS) transistor. The activation signal triggers and turns on a MOS transistor switch, to provide the required electric power for the first induction module  30 .  
         [0015]     The first induction module  30  is connected to the activation module  20 , and may include an induction coil. When the charge switch is turned on, the first induction module  30  transforms input electric energy to magnetic energy.  
         [0016]     The second induction module  60  is located with the charge battery  90  in an integrated manner. It transforms the induction magnetic field generated by the first induction module  30  to induction voltage. The second induction module  60  may include an induction coil with the coil ring number set according to the required charge voltage of various charge batteries so that the induction voltage meeting the requirements of various charge batteries may be generated. Hence, one charge dock may charge multiple number of batteries at various required voltages according to battery specifications.  
         [0017]     The rectification module  70  is connected to the second induction module  60  for rectifying the AC voltage generated by the second induction module  60  by induction to become an AC voltage. As the induction voltage on the second induction module  60  at the battery end  100  is an AC voltage, and the charge battery  90  requires a DC voltage for charging, the rectification module  70  is needed to transform the AC voltage to a DC voltage. The rectification module  70  may include a bridge rectifier.  
         [0018]     The filter module  80  is connected to the rectification module  70 . As the direct current, after rectification, is not stable, the filter module  80  can improve the DC waveform, so that it becomes a desired DC voltage to enhance charging quality and efficiency. The filter module  80  may be a circuit consisting of at least one inductor and one capacitor coupling in parallel.  
         [0019]     Refer to  FIG. 2  for the circuit diagram of the invention. First, the power supply end inputs an AC voltage; the detection module detects and triggers the activation module  20 , which consists of MOS transistors  21  and  22 . As the AC voltage has different positive and negative half cycles, the MOS transistors  21  and  22  form two different circuits, and through the first induction module  30  generate an alternate induction magnetic field. The first induction module  30  may include an induction coil  31 .  
         [0020]     Next, the second induction module  60  receives the alternate induction magnetic field, and according to the electromagnetic induction principle, the alternate induction magnetic field is transformed to an induction AC voltage. The second induction module  60  may include an induction coil  61 . The level of the induction voltage depends on the number of coil rings of the second induction module  60 .  
         [0021]     Then the induction AC voltage is rectified by the rectification module  70 . The rectification module  70  may consist of diodes  71  and  72 . Then is filtered by the filter module  80 . The filter module  80  may consist of an inductor  81  and a capacitor  82  coupling in parallel.  
         [0022]     When the induction AC voltage is at the positive half cycle, the rectification diode  71  is conductive, and the positive half cycle power supply passes through the circuit of the rectification diode  71 . Through the inductor  81  and the capacitor  82 , the DC waveform may be improved. When the rectification diode  72  is conductive, and the negative half cycle power supply passes through the circuit of the rectification diode  72 , and through the inductor  81  and the capacitor  82 , the DC waveform may be improved.  
         [0023]     The voltage after rectification is stored in the capacitor  82 . By means of discharge principle of the capacitor  82 , it charges the charge battery. When the voltage of the charge battery is saturated, the capacitor  82  and the charge battery reach the same potential, then the capacitor  80  stops the charging process. Hence there is no risk of overcharging the charge battery.  
         [0024]     By means of the integrated induction battery charge apparatus set forth above, a plurality of batteries of various specifications may be charged through one charge apparatus. The induction charge process also may be implemented with less restriction of the charge environment. Thus it is more convenient.  
         [0025]     While the preferred embodiment of the invention has been set forth for the purpose of disclosure, modifications of the disclosed embodiment of the invention as well as other embodiments thereof may occur to those skilled in the art. Accordingly, the appended claims are intended to cover all embodiments, which do not depart from the spirit and scope of the invention.