Energy Storage Mobile Charging Adapter and Energy Storing Method For the Same

An energy storing method for an energy-storage movable charging adapter comprising the steps of:

• isolating and converting AC/DC;
• protecting lithium battery;
• and recharging and adapting;
• wherein
• isolating and converting AC/DC:
• rectifying and filtering a commercial power into DC power, a positive electricity is supplied form a positive terminal of the DC power to a collector of a transistor Q2 through a primary coil of an isolating transformer, and is supplied to a base of Q2 through a resistor to increase a current of the collector of Q2, the current in the primary coil is exponentially increased, at the same time, a positive voltage induced by a positive feedback coil in the isolating transformer is supplied to the base of Q2 to conduct Q2 more quickly, a current flowing out of an emitter of Q2 flows back to a negative terminal of the DC electricity, when a voltage drop caused by a current on a resistor R3 is greater than a base conduction voltage of the transistor Q1, a conduction of Q1 causes a decrease of a base electric potential of Q2 and a current in the collector and the primary coil, and a voltage turnover of both ends of the positive feedback coil, and further accelerates a cutoff of Q2, at this moment, a magnetic energy stored in a magnetic core of the isolating transformer generates an induced electromotive force at the secondary side, and after the induced electromotive force is rectified and filtered, it will be transmitted to the lithium battery protection circuit board 4 and the charging adapter circuit board 5, when the magnetic energy stored in the isolating transformer is released until a reverse voltage of the positive feedback coil is not enough to cut off Q2, a current flowing through the resistor R1 will re-conduct Q2 to start a new circulation, thus, Q2 works in a switching state to make the AC/DC isolated converter circuit continuously output an isolated DC electricity to the following lithium battery protection circuit and charging adapter circuit.
• protecting lithium battery:
• a positive terminal of the AC/DC isolated converter circuit board is connected to a positive electrode of the lithium chargeable battery, and a negative terminal is connected to a negative electrode of the lithium chargeable battery through a switch circuit U2, the positive and negative electrodes of the lithium chargeable battery are connected to testing terminals of the circuit IC1, when a voltage outputted from the AC/DC isolated converter circuit board is greater than a voltage of the lithium chargeable battery, the lithium chargeable battery can be recharged, when a voltage of the testing terminals of IC1 is greater than a predetermined voltage thereof, U2 can be cut off by a control terminal of IC1, thus terminating recharging the lithium chargeable battery to prevent over-charge, the lithium chargeable battery also supplies power to the charging adapter circuit though U2, when the voltage of the lithium chargeable battery is smaller than the predetermined voltage of IC1, IC1 also cuts off U2 through the control terminal thereof, thus preventing over-discharge of the lithium chargeable battery.
• changing and adapting:
• a PWM pulse generated from the circuit IC2 makes the field effect transistor Q3 work in a switching state, when the field effect transistor Q3 is conducted, a DC positive current supplied from the AC/DC isolated converter circuit or the lithium battery protection circuit flows to the negative terminal through the coil L1 and the field effect transistor Q3, the coil L1 stores magnetic energy, when the field effect transistor Q3 is cut off, the magnetic energy stored in the magnetic core of L1 is converted into an electromotive force, the electromotive force is superposed to a DC voltage supplied from an input terminal in the same direction to recharge a capacitor C7 by a rectifier diode D6 with a higher voltage and supply electric power to the charging adapter jack, after flowing through an outside load and then back to the negative terminal of the charging adapter jack, the electric power flows through the resistor R9 and then back to the negative electrode of the input terminal, when the voltage of the two terminals of the charging adapter jack changes, the changing will be feedback to the voltage testing terminal of IC2 through the resistor, IC2 will change a pulse width of Q3, so as to keep an output voltage stable, when a voltage drop caused by a current flowing through the resistor and then back to the input terminal exceeds a certain predetermined value of the current testing terminal of IC2, IC2 will also change the pulse width of Q3, so as to decrease an output voltage, thus keeping an output current at a certain predetermined value, thereby, the output voltage and current of the charging adapter jack are kept at certain predetermined values, thus realizing charging and adapting.