charging controller, the input end of the charging controller is connected with the output end of the AC adapter, the output end of the charging controller is connected with the positive and negative electrodes of the rechargeable battery pack, and the positive and negative electrodes of the rechargeable battery pack are respectively connected with the positive and negative input ends of the notebook computer power supply.

the portable fan type notebook computer power supply device adopts a lithium ion battery as a rechargeable battery, a charging controller adopts a charging control circuit mainly composed of a singlechip S3F84K4, an output anode of an AC adapter is connected with a constant current source circuit, and the constant current source circuit the output is connected to the anode of the lithium IOn battery pack, the control end of the constant current source circuit is connected to the corresponding I/O output interface of the singlechip S3F84K4, the anode of the lithium ion battery pack is provided with a voltage signal detection circuit connected to the corresponding io input interface of the singlechip S3F84K4, and the cathode of the lithium ion battery pack there is a constant voltage source circuit connected to the corresponding I/O interface of the SCM S3F84K4.

in the portable fan type notebook computer power supply device, a rechargeable battery adopts a nickel-hydrogen battery, a charging control circuit in a charging controller adopts a MAX713 series rapid charging management chip, the output positive electrode of an AC adapter is connected with the collector electrode of a transistor VT1, and the transistor the emitter of VT1 is connected to the two legs of MAX713 via diode VD, the two legs of MAX713 are simultaneously connected to the positive electrode of Ni-MH battery pack, the base of transistor VT1 is connected to the collector of transistor VT2, the emitter of transistor VT2 is connected to the 14 legs of MAX713, and the base of transistor VT2 is connected to connected to pins 5 and 15 of MAX713, the base of transistor VT2 is connected to the output anode of AC adapter through resistor R1, pin 5 of MAX713 is connected to the cathode of rechargeable battery through capacitor C2, and the cathode of rechargeable battery is connected to the output cathode of AC adapter through resistor R7. the negative pole of AC output and the positive pole of rechargeable battery are respectively connected to the positive and negative input terminals of notebook computer power supply.

for the portable fan type notebook computer power supply device, the AC adapter supplies power to the fan control circuit after stabilizing the voltage through the regulated power supply circuit 7805, and the heat dissipation fans are one, two or three.

1.portable fan type notebook computer power supply device, which contains lithium ion or nickel hydrogen battery pack and charging control circuit, charges the rechargeable battery pack when the notebook computer is not in operation, and uses it as a heat sink when the notebook computer is in operation. to provide power supply for notebook computers, truly realize the portability and mobility of notebook computers, give full play to its role.

2.portable fan type notebook computer power supply device is light, novel and reasonable in structural design.it uses advanced electronic control circuit to charge the battery, which can not only play a role in daily life and work, but also play a role in tourism, exploration and field work. has unique application advantages.

4.description of drawings:

fig.1:schematic block diagram of power supply device for portable fan notebook computer

fig.2:schematic diagram of charging control circuit for power supply device using lithium ion battery

fig.3:schematic diagram of power supply arrangement of portable fan notebook computer

fig.4:schematic diagram of charging control circuit of Ni-MH battery for power supply device

embodiment 1:refer to the schematic block diagram of the portable fan type notebook computer power supply device of fig.1 and the schematic structural arrangement of fig.3. The fan type notebook computer power supply device comprises a heat dissipation base 1 for mounting a computer heat dissipation fan 6, and a power supply the AC adapter 2 of the power supply and control circuit 5, a rechargeable battery pack 3 and a charging controller 4 are combined and arranged in the frame of the heat dissipation seat 1, the input end of the charging controller 4 is connected with the output end of the AC adapter 2, and the output end of the charging controller 4 is connected with rechargeable electricity the positive and negative electrodes of the pool group 3, and the positive and negative electrodes of the rechargeable battery group 3 are respectively connected with the positive and negative input ends of the notebook computer power supply; One-way output of the AC adapter 2 is connected with a fan power supply and a control circuit 5, and the fan power supply and the control circuit 5 provide for working power supply and control the work of the cooling fan, cooling fan 6 working power supply is provided by the integrated circuit 7805 composed of regulated power supply circuit (this part of the circuit is omitted); The AC adapter 2 outputs simultaneously-the power supply passes through the charging control power road to charge lithium ion rechargeable battery pack.