CN201174090Y - Power supply adapter for notebook computer - Google Patents

Abstract

The utility model relates to a notebook computer power supply adapter, which mainly receives the signal detected by an output voltage and current detecting module through a programmable controller, controls a variable voltage power circuit to control the voltage and the current output by an output plug, and is matched with the power supply requirements of notebook computers with different brands and models; the programmable controller is started by a wake-up circuit, so that the power supply adapter has the functions of automatic energy saving and restarting control when no load exists; and an independent 5VDC output is provided, and the operation of supplying power to various types of high-power interface equipment can be realized by matching with a mode of a replaceable plug.

Description

Notebook computer power adapter

technical field

The utility model relates to a power supply adapter for a notebook computer, especially a kind of notebook computer that can provide power supply for different brands or different types of operation, zero standby energy consumption, and can provide power supply for various types of high power The power supply adapter for the operation of the interface device.

Background technique

At present, the power supply adapters attached to notebook computers on the market are all designed for a single model. Therefore, users often feel troubled by having to carry a bulky computer power adapter when carrying a notebook computer between work and home. Therefore, many users will purchase additional computer power adapters and place them in two places to reduce the inconvenience of carrying.

However, for users who purchase a dedicated power adapter for a single model, they may not be able to use it when replacing a new notebook computer because of the different specifications of the new model, so they must re-purchase a matching power adapter, resulting in additional s expenses. Merchants who sell notebook computer power adapters also need to have various power adapters because they need to match notebook computers of different brands and models, causing additional purchase costs and troubles in inventory management. Therefore, there is a demand for one-to-many general-purpose computer power supply adapters in the market.

The mainstream product of the existing one-to-many general-purpose computer power supply adapter is the iGo series of the Mobility Company of the United States. The series of products use replaceable adapters to cooperate with different brands of notebook computers, and the resistors are arranged in the adapters. Bridge or other electronic components such as capacitors, inductors, etc. to control the output voltage of the notebook computer power adapter, so as to achieve a one-to-many function. However, the disadvantages of this design are: the internal structure of the adapter is relatively complicated, the production is not easy, and the production cost is relatively high.

Some products use various switches to set the output voltage, and use replaceable adapters to match different brands of notebook computers. However, users of this design have to judge the voltage by themselves. If the wrong voltage setting is selected, it may not work, or cause trouble and danger of damaging the notebook computer.

In addition, the general way to use the notebook computer power adapter is to insert an alternating current (AC) power cord into an AC socket, and then insert a direct current (DC) power supply plug into the notebook computer for use. When the vast majority of users are not using the notebook computer, they will cover the panel to put the notebook computer into a sleep state; if the user normally carries the notebook computer between the home and the workplace, an additional power supply will be purchased. And when the notebook computer is moved to another place, the AC power cord is often not pulled out from the socket or the AC socket power is turned off. As long as the power adapter is connected to the AC power supply, even if there is no load at the DC output end, the circuit is still in standby operation, and the average standby power consumption is about 0.5W~1W, resulting in unnecessary energy waste.

In addition, because notebook computers tend to shrink in size, the appeal of appearance turns to ultra-thin, and the number of Universal Serial Bus (USB) ports required for peripheral connection on the notebook computer body is also reduced accordingly, causing users to have to Add an external USB hub (HUB) to connect peripheral devices, and the standard USB power supply specification is only 5VDC500mA per USB port, so when using an external USBHUB, this 500mA power supply will be shared by all ports, resulting in some high power requirements for connections Devices such as mobile hard drives, external optical drives, external speakers, etc. are often unusable due to insufficient power, so many high-end USBHUBs will be equipped with an independent power adapter, but this also requires users to carry an extra one The hassle with the power adapter.

Contents of the invention

In order to solve the above-mentioned defects, the main purpose of this utility model is to provide a power supply adapter for notebook computers, which can automatically set the output voltage of the power supply adapter without putting electronic components such as resistors, bridges, capacitors, and inductors in the adapter. With the universal mode with replaceable plugs, it can provide power supply for the operation of notebook computers of different brands or models.

Another object of the present utility model is to provide a power supply adapter for a notebook computer. When the power supply adapter has no output, it will automatically shut down, and the function of restarting the output when there is a need to achieve zero standby energy consumption and improve product efficiency. Environmental protection performance, automatically saving electricity bills for users and reducing energy consumption.

Another object of the present invention is to provide a power supply adapter for a notebook computer. The power supply adapter has an independent 5VDC output and can provide power supply for the operation of various types of high-power interface devices with a replaceable plug.

The power supply adapter of the notebook computer of the present invention includes: a power switch for connecting an alternating current power supply; a conversion circuit for receiving the power supplied by the power switch, and converting the alternating current (AC) power into direct current (DC) ) power supply; a variable voltage power supply circuit receives the DC power from the conversion circuit, and transforms the DC power to a required voltage; an output voltage and current detection module receives the DC power from the variable voltage power circuit The power supply of the notebook computer is connected to detect the interchangeable joint socket of a notebook computer, which is used to detect the voltage and current required by the notebook computer connected to the output plug of the notebook computer interchangeable joint socket; and a programmable control device, which receives the signal detected by the output voltage and current detection module, and controls the variable voltage power supply circuit to control the voltage and current output by the output plug, and can be used in conjunction with different brands Compare your computer's power requirements with your model.

In addition, the programmable controller controls an optocoupler control circuit, and the optocoupler control circuit controls the power switch to be in an on power supply mode or a power off energy saving mode. The interchangeable connector socket of the notebook computer includes a touch switch module for sensing whether the output plug is inserted into the notebook computer, and the touch switch module is electrically connected to a wake-up circuit for To start the programmable controller, and the wake-up circuit includes a battery pack as a power supply to provide the power demand of the programmable controller in the energy-saving mode, so that the power supply adapter of the present utility model is When there is no load (no output), it has the function of automatic energy saving and restart control.

The conversion circuit is further electrically connected to a 5V constant voltage power supply circuit to output a 5V DC power supply; a 5V output voltage and current detection module receives the power from the 5V constant voltage power supply circuit and is connected to the detection module. A 5V interchangeable joint socket is used to detect the voltage and current required by the load connected to the output plug of the 5V interchangeable joint socket, and inform the programmable controller so as to provide power supply to various types of high voltage around the notebook computer Operation of electrical equipment.

Compared with the prior art, the utility model has the advantages that, on the one hand, the power supply adapter of the notebook computer does not need to put resistors, bridges, capacitors, inductors and other electronic components in the adapter, and the digital signal is controlled by the programming of the programmable controller. The identification technology automatically sets the output voltage of the power adapter, and with the universal mode with replaceable plugs, it can provide power for the operation of notebook computers of different brands and models.

On the other hand, by using the wake-up circuit and the battery pack as the power supply for intelligent energy saving, it will automatically shut down when there is no output from the adapter, and the function of restarting the output through the programmable controller can achieve zero standby energy consumption and improve the environmental protection performance of the product. , Automatically save electricity bills for users and reduce energy consumption. And through the built-in independent 5VDC output, combined with the universal mode with replaceable plugs, it can provide power for the operation of various types of high-power interface devices.

Description of drawings

Fig. 1 is the system block diagram of the power supply adapter of the utility model embodiment;

Fig. 2 to Fig. 5 are the circuit diagrams of Fig. 1 of the embodiment of the utility model respectively.

Detailed ways

The above-mentioned and other technical features and advantages of the present invention will be described in more detail below in conjunction with the accompanying drawings.

Please refer to FIG. 1 , which is a system block diagram of a power supply adapter for a notebook computer according to an embodiment of the present invention, and the circuit diagrams of the embodiment of the present invention are shown in FIGS. 2-5 . The power supply adapter includes: a power switch 12 for connecting an alternating current power source 11; a conversion circuit 13 for receiving the power supplied by the power switch 12, and converting the alternating current (AC) power into direct current (DC) ) power supply; a variable voltage power supply circuit 14, which receives the direct current power supply from the conversion circuit 13, and transforms the direct current power supply to a required voltage; an output voltage and current detection module 15, which receives the described can The power supply from the variable voltage power supply circuit is connected to detect a notebook computer interchangeable joint socket 16, which is used to detect the output plug 31 of the notebook computer interchangeable joint socket 16 that is connected to the notebook computer. voltage and current; and a programmable controller 17, which receives the signal detected by the output voltage and current detection module 15, and controls the variable voltage power supply circuit 14 to control the output plug 31 The output voltage and current can be used in conjunction with the power requirements of different brands and models of pen computers.

In addition, the programmable controller 17 controls an optocoupler control circuit 18, and the optocoupler control circuit 18 controls the power switch 12 to be in an on power supply mode or a power off energy saving mode. The notebook computer interchangeable joint socket 16 includes a touch switch module 161 for sensing whether the output plug 31 is inserted into the notebook computer, and the touch switch module 161 is electrically connected to a The wake-up circuit 19 is used to start the programmable controller 17 .

The action of the utility model is to use the programmable controller 17 to carry out circuit detection control (as shown in Figure 2), when the programmable controller 17 is started and is in normal working condition, the light will be turned on. The transistor Q7 of the coupling control circuit 18, and then turns on the bidirectional thyristor Q6 of the power switch 12 so that the AC power supply 11 can be connected to the ports HOT1 and HOT2 to allow the AC power input to generate the output of the back-end DC power supply. When the optocoupler U9 of the optocoupler control circuit 18 is not conducting, the bidirectional thyristor Q6 circuit of the power switch 12 stops conducting, so that the circuit connection ports HOT1 and HOT2 are in the AC power cut-off state , thereby saving energy consumption.

In terms of restarting the AC power input in the energy-saving mode, the interchangeable joint socket 16 of the notebook computer of the present invention includes a touch switch module 161, for example, a built-in electronic induction switch S1 (as shown in FIG. 5 ), when the user inserts the DC output plug 31 into the notebook computer, the electronic inductive switch S1 is triggered to generate a START signal to turn on the transistor Q9 in the wake-up circuit 19 because the user's hand touches the output plug 31 Wake up the programmable controller 17, so the transistor Q7 of the optocoupler control circuit 18 is turned on, and then the bidirectional thyristor Q6 circuit is turned on to connect the ports HOT1 and HOT2 to allow the AC power supply 11 to input, and once it is started, the The programmable controller 17 immediately begins to set the output detection. If the notebook computer is in a dormant state, the user only needs to lightly touch the output plug 31 with his hand before restarting the computer to wake up the programmable controller 17, start to connect the AC power supply 11 and start the output detection automatic setting. Certainly.

Once the programmable controller 17 is woken up, the touch switch module 161 stops working because the transistor Q10 in the wake-up circuit 19 is turned on, so even if the user touches the output plug 31 again The electronic inductive switch S1 will not have any response, and the circuit will return to normal function only after the AC power supply 11 is cut off.

And described wake-up circuit 19 also comprises a battery pack 191 as power supply, in order to provide the electricity demand of described programmable controller 17 under energy-saving mode, make the power supply adapter of the present utility model have no load (no output) It has the function of automatic energy saving and restart control. Because the operating current of the programmable controller 17 will be less than 5uAH, so a group of replaceable battery packs 191 (such as AAA alkaline batteries) can be installed in the adapter of the present utility model to provide the programmable controller 191 as a power supply. The dormant power demand of the controller 17 in the energy-saving mode, when the programmable controller 17 is in a normal working condition, the backup power supply will turn off the transistor Q9 due to the conduction of the transistor Q10, and stop the output of the battery pack 191 to Save electricity. According to this circuit design, a group of 1500mAHAAA alkaline batteries can supply the programmable controller with a service life of more than 175 years.

The conversion circuit 13 is further electrically connected to a 5V constant voltage power supply circuit 21 for outputting a 5V DC power supply; a 5V output voltage and current detection module 22 receives the power from the 5V constant voltage power supply circuit 21, And connect and detect a 5V interchangeable connector socket 23, in order to detect the voltage and current required by the load connected to the output plug 32 of the 5V interchangeable connector socket 23, and inform the programmable controller 17, so as to provide power Supply the operation of various types of high power equipment around the notebook computer.

The utility model detects the output current value of the output voltage and current detection module 15 and the 5V output voltage and current detection module 22 at the same time. When the circuit has an output and the current value is greater than the set value, the The programmable controller 17 will continue to turn on the input of the AC power supply 11 to maintain the normal working state of the circuit. When the output current is lower than the default value, the programmable controller 17 will start the energy-saving mode.

Moreover, the programmable controller 17 described in the utility model keeps monitoring and detecting the output plugs 31 and 32 of the DC at any time. When there is current output, the programmable controller 17 will keep the optocoupler control The transistor Q7 of the circuit 18 is turned on continuously, but if no current output is detected within the preset time, the programmable controller 17 will automatically enter the energy-saving mode and disconnect the optocoupler The control circuit 18 turns off the bidirectional thyristor Q6 at the input end of the AC power supply 11, so as to realize zero standby power consumption.

The above description is only illustrative, rather than restrictive, of the present invention. Those of ordinary skill in the art understand that many modifications and changes can be made without departing from the spirit and scope defined by the following appended claims. Or equivalent, but all will fall within the protection domain of the present utility model.

Claims (6)

1. the power supply adapter of a mobile computer, it is characterized in that: it comprises:

One power switch (12), it is in order to insert an alternating-current power supply (11);

One change-over circuit (13), it is connected with described power switch (12), and alternating-current power supply is converted to dc power supply;

One variable voltage power circuit (14), it is connected with described change-over circuit (13), is required voltage with the dc power supply transformation;

One output voltage current detecting module (15), it is connected with described variable voltage power circuit (14), and detecting also connects the interchangeable terminal fitting of a mobile computer (16), connects required voltage of mobile computer and electric current in order to the output plug (31) of detecing the interchangeable terminal fitting of the described mobile computer of side (16); And

One Programmable Logic Controller (17), it is connected with described variable voltage power circuit (14) with described output voltage current detecting module (15) respectively.

2. power supply adapter according to claim 1, it is characterized in that: described Programmable Logic Controller (17) connects and controls an optocoupler control circuit (18), is connected and controlled described power switch (12) by described optocoupler control circuit (18) to be in the powering mode of conducting or the energy saver mode of outage.

3. power supply adapter according to claim 1 is characterized in that: the interchangeable terminal fitting of described mobile computer (16) comprises a touch switch module (161), whether inserts mobile computer in order to respond to described output plug (31).

4. power supply adapter according to claim 3 is characterized in that: the touch switch module (161) of the interchangeable terminal fitting of described mobile computer (16) is electrically connected to a wake-up circuit (19), in order to start described Programmable Logic Controller (17).

5. power supply adapter according to claim 4 is characterized in that: described wake-up circuit (19) comprises an electric battery (191) as power supply, in order to the need for electricity of described Programmable Logic Controller (17) under energy saver mode to be provided.

6. power supply adapter according to claim 1 is characterized in that: described change-over circuit (13) further be electrically connected a 5V constant voltage power supply circuit (21) in order to output 5V dc power supply; One 5V output voltage current detecting module (22), receive the power supply that described 5V constant voltage power supply circuit (21) transmits, and connection is also detected the interchangeable terminal fitting of a 5V (23), in order to the output plug (32) of detecing the interchangeable terminal fitting of the described 5V of side (23) connect required voltage of load and electric current, and inform described Programmable Logic Controller (17).

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