KR200218022Y1 - An Ador for Notebook Computer - Google Patents

Abstract

The present invention recovers a battery of various portable electronic devices, and more particularly relates to an adapter for a notebook computer that can be charged by receiving AC power and DC power.

The present invention provides a DC input unit for inputting DC power, an AC input unit for inputting AC power, a rectifier for rectifying an AC voltage input from the AC input unit into a DC voltage, a primary filter for filtering rectified voltage, and the filtered primary side voltage. To filter the voltage inputted from the DC input unit or the voltage induced on the secondary side of the transformer, the chopper 17 performing DC / DC conversion. It consists of a charging circuit that charges the rechargeable battery, widening the range of AC / DC input voltage, and making the internal circuit simpler and cheaper, and more diverse in input charging method and output output method. The purpose is to provide an adapter for a notebook computer.

Description

Adapter for notebook computer {An Ad apartment for Notebook Computer}

The present invention recovers a battery of various portable electronic devices, and more particularly relates to an adapter for a notebook computer that can be supplied with AC power and DC power to charge the notebook computer.

The prior art is well known in the Republic of Korea Utility Model Publication No. 1999-0015641, it will be described with reference to the accompanying FIG.

3 is a known circuit diagram of a portable AC / DC combined battery charger according to the above-mentioned Korean Utility Model Publication No. 1999-001541, which includes an AC input unit 301 for inputting an AC voltage and a filter unit 302 for filtering an AC input voltage. A rectifier 303 for rectifying the input AC voltage into a DC voltage, a PWM control IC 304 for adjusting the magnitude of the rectified voltage, a switching unit 305 for inducing energy to a secondary side of a transformer, and a secondary side to a secondary side If the overcurrent occurs in the rectifier 306 and the secondary side of rectifying the rectified voltage, the states of the ERROR AMPLIFIER 307 and SET 9 that control the secondary output by controlling the PWM control IC 304 through the feed back. LED control circuit 308 for displaying and SET 9 for charging the rechargeable battery. In addition, the voltage output from the constant voltage circuit 311 and the constant voltage circuit 311 to maintain the input DC voltage at a constant voltage using a DC power input unit 310 that inputs a DC voltage and a regulator are filtered. A DC / DC converter 313 for controlling the filter unit 312, a TR to adjust the magnitude of the voltage applied to the rectifier 306, and a collector-side output value of the TR to measure the DC / DC converter. And a feedback 314 that provides a TR control range of the (Converter) 313.

According to the above disclosure, since the AC input voltage is 110V to 220V and the DC input voltage is limited to 12V to 24V, the input voltage is limited. In addition, the switching unit 305 and the PWM control IC 304 were used to induce voltage on the secondary side. Accordingly, an error for preventing overvoltage by separately measuring the induced voltage in order to provide a stable induced voltage on the secondary side. It was necessary to add AMPLIFIER 307 as feedback means. Therefore, due to the configuration of the feedback circuit has the complexity of the circuit, the rectifier 306 of the secondary side is also required to reconstruct the secondary voltage already converted to direct current can be seen as an unnecessary element, the input terminal of the power supply method As a result, the output stage is limited to a two-contact output method, and thus there is a problem in that it cannot provide various usage methods.

The present invention has been devised to solve the above problems, wider range of AC / DC input voltage, simpler and cheaper internal circuit, and more diverse in input charging method and output output method. The purpose is to provide an adapter for a notebook computer.

1 is a block diagram of an adapter for a notebook computer according to the present invention.

2 is a circuit diagram of an adapter for a notebook computer according to the present invention.

Figure 3 is a block diagram of a conventional portable AC / DC combined battery charger.

Figure 4 is a perspective view of the adapter for a notebook computer according to the embodiment of the present invention.

In order to achieve the above object, the present invention provides a DC input unit for inputting DC power, an AC input unit for inputting AC power, a rectifier for rectifying an AC voltage input from the AC input unit to a DC voltage, and a primary filter for filtering the rectified voltage. An IPD unit for inducing the filtered primary voltage to the secondary side using a transformer, a secondary filter 16 for filtering a voltage input from the DC input unit or a voltage induced in the secondary side of the transformer, DC / DC Consists of a chopper 17 for converting, a charging circuit for charging a rechargeable battery,

The DC input unit includes a secondary battery input unit receiving DC power from the secondary battery,

The IPD unit is configured to control the energy released to the secondary side of the transformer by controlling the power applied to the transformer using the IPD IC.

Hereinafter, the present invention will be described in detail with reference to the drawings.

1 is a block diagram of a portable multi-power charger according to the present invention, a DC input unit 10 for inputting DC power, a secondary battery input unit 11, an AC input unit 12 for inputting AC power, and the AC input unit ( Rectifier 13 for rectifying the AC voltage input from 12) into a DC voltage, a primary filter 14 for filtering the rectified voltage, and the filtered primary voltage is induced on the secondary side using a transformer and the worldwide voltage Secondary filter for filtering the voltage input from the IPD (Inteligent Power Device) unit, the DC input unit 10 or the DC 9V square battery input unit 11 that can be used as an input voltage or the voltage induced on the secondary side of the transformer (16), a chopper 17 for DC / DC conversion, a charging circuit 18 for charging, and a SET 19 for charging battery.

As a preferred embodiment of the present invention can be configured with a circuit as shown in Figure 2, the operation of each part will be described.

(1) DC input unit 10, 11: DC voltage is applied by using DC power supply or secondary battery between 7 ~ 30V.

(2) Secondary filter 16: composed of resistors R5, capacitors C7 and C8, zener diodes D4 and filters the voltage induced on the secondary side of the DC input or transformer to chopper 17. Output

(3) Chopper 17: IC1, resistors (R6, R7, R8, R9), capacitors (C9, C10), inductors (L1), diodes (D6), and zener diodes (D5) that control DC / DC conversion. The DC-to-DC conversion of the voltage filtered by the secondary filter is configured to output to the charging circuit (18).

(4) Charging circuit 18: IC2 which applies a constant voltage to the rechargeable battery and checks the state of charge to control charging, resistors R10, R11, R12, R13, R14, and capacitor C11 for the driving environment of IC2. , C12, C13, C14, light emitting diodes (LED1, LED2) indicating the state of charge of the rechargeable battery, transistor (Q2) for amplifying the current input from the chopper according to the control value of the IC2 to apply the charging current to the rechargeable battery And resistors R15, R16, R17, R18, and R19, capacitors C15 and C16, and zener diode D6 to apply a charging current to the rechargeable battery.

(5) AC input unit 12: AC power between 85 ~ 265V is applied to the system. Fuse F1 and varistor ZNR1 are connected to prevent surge voltage.

(6) Rectifier 13: A rectifier circuit D1 composed of four diodes is configured to rectify the AC voltage applied from the AC input unit to a DC voltage.

(7) Primary filter 14: Capacitors C1 and C2 are connected in parallel to filter the DC voltage rectified in the rectifier.

(8) IPD section 15: Q1, which is an IPD (Intelligent Power Device) serving as an AC / DC converter and used for primary side control of the switching power supply; It is composed of resistors (R1, R2, R3, R4), capacitors (C3, C4, C5, C6) and diodes (D2, D3) that apply energy to the transformer by switching under the control of Q1. Energy is applied, and the energy induced in the secondary side of the transformer is charged in the rechargeable battery through the processes of (2) to (4).

4 shows an embodiment of the present invention, the adapter 40 for a notebook computer has an AC cord connection part 45 connecting a notebook computer connection part 41, a secondary battery mounting part 42, an AC power cord 46, It is composed of a DC cord connecting portion 43 for connecting the cigar jack 44 cord connecting with the DC power of the vehicle.

In other words, in a car that is supplied with free volts in a general home that provides AC power of 85 to 265 V, it is connected to the power connection of the notebook computer through a laptop adapter and charged, or in a car that provides DC power of 7 to 30 V. Jack is supplied with DC power from the car and connected to the notebook computer through the notebook computer adapter to charge. In addition, a secondary battery may be mounted on an adapter for a notebook computer to charge the notebook computer using the secondary battery.

As another embodiment of the present invention in FIG. 4, an adapter for a notebook computer is provided, and it is apparent that an adapter for a notebook computer for supplying power to a notebook computer using a jack in a general adapter method is apparent.

As another embodiment of the present invention, the rechargeable battery may be charged by directly attaching the rechargeable battery to the adapter for the notebook computer.

In addition, in the practice of the present invention is not limited to the notebook computer adapter for the notebook computer, it can be applied to a portable electronic device used to charge the battery, such as a cassette player.

As described above, the present invention extends the input range of AC power to 85 to 265V by using an IPD (Intellingent Power Device) as a primary AC / DC converter, enabling world wide power input, and having a low price. In addition, miniaturization is possible.

The chopper used as the secondary DC / DC converter extends the DC input voltage range to 7 ~ 30V and can receive DC power from a wider variety of DC power supplies, not limited to automotive power supplies.

When the secondary battery can be mounted in the DC power input unit and the power cannot be supplied using the cord, the secondary battery can be used to supply the power.

Claims (3)

A DC input unit for inputting DC power, an AC input unit for inputting AC power, a rectifier for rectifying the AC voltage input from the AC input unit into a DC voltage, a primary filter for filtering the rectified voltage, and the filtered primary voltage transformer. The secondary filter 16 for filtering the voltage input from the DC input unit or the voltage induced on the secondary side of the transformer, the chopper 17 for DC / DC conversion, and the rechargeable battery. Adapter for notebook computer, characterized in that consisting of a charging circuit for charging. The method according to claim 1, And the DC input unit comprises a secondary battery input unit receiving a DC power from the secondary battery. The method according to claim 1, And the IPD unit controls power applied to the transformer by using an IPD IC to control energy induced in the secondary side of the transformer.