CN100552591C - Voltage regulation system and method thereof - Google Patents

Abstract

The invention discloses a voltage adjusting system and a method thereof. The first power supply unit transmits a first power supply having a reference voltage to a device body of the portable device as a working power supply of the device body, and the second power supply unit transmits a second power supply to the voltage regulator. The voltage regulator adjusts the second power supply into a working power supply according to the reference voltage and transmits the working power supply to the device main body, so that the first power supply unit and the second power supply unit simultaneously supply power to the portable device.

Description

Voltage regulation system and method thereof

technical field

The present invention is a voltage regulation system and its method, especially about using a voltage regulator to allow a lower-power second power source to simulate a higher-power first power source, so that both the first power source and the second power source can be used as portable devices working power supply.

Background technique

Due to the emphasis on environmental protection issues, the use of electronic products combined with green energy is becoming more and more enthusiastic. Among them, fuel cells have high efficiency and low pollution, and can be designed as small batteries for use in portable devices. However, the disadvantage of fuel cells is power lower. Therefore, devices that require a higher power supply, such as portable devices such as notebook computers, still mostly use a higher power lithium battery to supply power.

Please refer to FIG. 1 , which is a schematic diagram of the appearance of a notebook computer equipped with a lithium battery in the prior art. In the figure, a notebook computer 11 and a lithium battery 12 are included, and the notebook computer 11 is electrically connected to the lithium battery 12 by using its accommodating space. The lithium battery 12 has a voltage of 10-70 watts and is used to drive the notebook computer 11 into the working mode. By using a notebook computer with a lithium battery, the mobility of use can be improved, and the functions of the notebook computer are quite diversified nowadays. In order to provide better sound and light effects or processing performance, it is often necessary to increase its power consumption. However, Lithium batteries have limited power, increasing power consumption will shorten the use time of lithium batteries, causing inconvenience in use.

Therefore, a voltage regulation system and method thereof are designed, which are used in portable devices, and a voltage regulator (voltage regulator) allows a lower-power second power source to simulate a higher-power first power source, so that the two The power supply has the same voltage and is delivered to the portable device. Thereby, the present invention can utilize the first power source and the second power source as the working power source of the portable device, thereby increasing the battery life of the portable device.

Contents of the invention

The main purpose of the present invention is to provide a voltage regulation system and its method, which is to provide the first power supply unit and the second power supply unit to perform power supply operation at the same time, and solve the problem of insufficient voltage of the second power supply unit by the voltage regulator, increasing the Endurance of the first power supply unit. The reason is that, to achieve the above purpose, the voltage regulation system according to the present invention at least includes a first power supply unit, a second power supply unit and a voltage regulator.

As mentioned above, according to the first power supply unit of the present invention, the first power supply with the reference voltage is transmitted to the device body of the portable device as the working power supply, and the second power supply unit transmits the second power supply to the voltage Regulator. The voltage regulator adjusts the second power supply according to the reference voltage, so as to generate the working power supply with the reference voltage for sending to the main body of the device. Through the above, the first power supply unit and the second power supply unit can be used to provide the working power required by the portable device at the same time, so as to increase the battery life of the first power supply unit.

Moreover, according to the voltage regulation system of the present invention, a power supply relationship is provided, mainly using the portable device to receive the AC power to provide the AC power signal, and using the second power of the second power unit to provide the substitute power signal. The power supply relationship controls the opening (ON) or closing (OFF) of the first switch and the second switch through the AC power signal and the substitute power signal, wherein, in the state where the AC power signal is not provided, the first switch is turned on, The first power supply can be used as a working power supply. When more than one of the AC power signal and the substitute power signal is provided, the second switch is turned on. Especially in the state where the AC power signal is not provided and the substitute power signal is provided, the first power source and the second power source can be used as working power sources together.

Description of drawings

FIG. 1 is a schematic diagram of the appearance of a conventional notebook computer equipped with a lithium battery;

Fig. 2 is a schematic diagram of a voltage regulation system of the present invention;

Fig. 3 is a schematic diagram of a power supply relationship of the present invention;

Fig. 4 is a schematic diagram of a voltage regulation system sharing an input terminal with an AC power supply according to the present invention;

FIG. 5 is a schematic diagram of a voltage regulation system having an input terminal different from that of an AC power supply according to the present invention;

FIG. 6 is a flow chart of the steps of the voltage adjustment method according to the present invention.

Brief description of the figure number:

11: Notebook computer; 12: Lithium battery;

21: the first power supply unit; 22: the main body of the device;

23: Second power supply unit; 24: Voltage regulator;

25: Reference voltage; 31: AC power signal;

32: Substitute power supply signal; 33: Second switch;

34: first switch; 41: charging unit;

51: node; 610-640: step process.

Detailed ways

In order to enable the examiner to have a further understanding and understanding of the structural features and the achieved effects of the present invention, I would like to provide a preferred embodiment and a detailed description, as follows:

Please refer to FIG. 2 , which is a schematic diagram of a voltage regulation system of the present invention, which is used in a portable device, so that the first power supply unit and the second power supply unit simultaneously supply power to the main body of the device. In the figure, a first power supply unit 21 , a device main body 22 , a second power supply unit 23 and a voltage regulator 24 are included. The first power supply unit 21 transmits the first power to the device main body 22 as the working power of the device main body 22. The device main body 22 can enter the working mode by the working power supply. The first power supply unit 21 can be a lithium battery, and the first power supply The voltage is a reference voltage 25 . In addition, the second power supply unit 23 can be installed in the portable device, or can be electrically connected to the portable device through an adapter interface, so as to transmit the second power supply to the voltage regulator 34. The second power supply unit 23 can be The fuel cell. The voltage regulator 24 is electrically connected to the first power supply unit 21 , the second power supply unit 23 and the device main body 22 , receives the second power supply, and obtains the reference voltage 25 through the first power supply of the first power supply unit 21 . The voltage regulator 24 uses the reference voltage 25 to adjust the voltage of the second power source, thereby generating the working power with the reference voltage 25 , and then the voltage regulator 24 transmits the working power to the device main body 22 .

Please refer to FIG. 3 , and refer to FIG. 4 and FIG. 5 together. FIG. 3 is a schematic diagram of the power supply relationship of the present invention, which is controlled by the controller of the portable device. In the figure, the AC power signal 31 is provided by the AC power source, and the substitute power signal 32 is provided by the voltage regulator 24 shown in FIG. 4 or generated by the voltage value of the node 51 shown in FIG. 5 . When the AC power signal 31 is provided, the first switch 34 is turned off, otherwise, when the AC power signal 31 is not provided, the first switch 34 is turned on. Moreover, when one of the AC power signal 31 or the substitute power signal 32 is provided, the second switch 33 can be turned on. When neither the AC power signal 31 nor the substitute power signal 32 is provided, the second switch 33 is turned off.

Please refer to FIG. 4 , and please refer to FIG. 2 and FIG. 3 together. FIG. 4 is a schematic diagram of a voltage regulation system sharing an input terminal with an AC power source according to the present invention, which is used in a portable device. In the figure, it includes a first switch 34 and a second switch 33 , a first power supply unit 21 , a device main body 22 , a second power supply unit 23 , a voltage regulator 24 and a charging unit 41 . Wherein, when the first switch 34 is in the open state as shown in FIG. . The second power unit 23 transmits the second power to the voltage regulator 24 and activates the voltage regulator 24 . The voltage regulator 24 can adjust the second power supply according to the reference voltage 25 of the first power supply, so that the second power supply becomes the working power supply, thereby providing the substitute power supply signal 32 to turn on the second switch 33, so as to transmit the working power supply to the main body of the device twenty two. Moreover, the first switch 34 and the second switch 33 respectively include at least one transistor and at least one diode, and are turned on or off according to the AC power signal 31 and the substitute power signal 32 respectively. In addition, the charging unit 41 enables the first power supply unit 21 to perform a charging operation through an AC power supply or a second power supply.

Please refer to FIG. 5 , and please refer to FIG. 2 and FIG. 3 together, which is a schematic diagram of a voltage adjustment system with an input terminal different from that of an AC power source according to the present invention, which is used in a portable device. In the figure, the second power unit 23 generates the substitute power signal 32 according to the voltage value of the node 51 to turn on the second switch 33 and transmit the second power to the voltage regulator 24 . The voltage regulator 24 adjusts the voltage of the second power supply to make the second power supply a working power supply with the reference voltage 25. Since the second switch 33 is turned on, the voltage regulator 24 can transmit the working power supply to the device main body 22, thereby making the Both the first power supply and the second power supply can be working power supplies.

According to the voltage adjustment system of the present invention, FIG. 6 is a voltage adjustment method disclosed in the present invention, which is used in a portable device such as a notebook computer. The method includes the following main steps:

Step 610: Transmit the first power to the main body of the device.

Step 620: Provide a reference voltage through the first power supply.

Step 630: Use the reference voltage to adjust the second power supply as the working power supply.

Step 640: Transmit working power to the device main body.

In the above steps, the first power supply is usually provided by a high-power battery such as a lithium battery, and the second power supply is usually provided by a low-power battery such as a fuel cell or a dry battery. In addition, the voltage of the working power supply is equal to the reference voltage of the first power supply .

The above is only a preferred embodiment of the present invention, and is not used to limit the scope of the present invention. All changes and modifications such as shapes, structures, features and principles described in the scope of the patent application for the present invention shall be Included in the patent scope of the present invention.

Claims (15)

1. A voltage regulation system used in a portable device, characterized in that it at least includes: A first power supply unit, which transmits a first power supply to a device main body as a working power supply of the device main body, and the first power supply and the working power supply have a reference voltage; A second power supply unit, transmitting a second power supply; A voltage regulator receives the second power supply, adjusts the second power supply according to the reference voltage, and transmits the adjusted second power supply to the device main body as the working power supply of the device main body. 2. The voltage regulating system according to claim 1, wherein the portable device is a notebook computer. 3. The voltage regulating system according to claim 1, wherein the portable device comprises the device main body. 4. The voltage regulating system according to claim 1, wherein the first power supply unit is a lithium battery. 5. The voltage regulating system according to claim 1, wherein the second power supply unit is a fuel cell. 6. The voltage regulation system as claimed in claim 1, wherein the second power supply has a voltage lower than the reference voltage. 7. The voltage regulating system according to claim 1, wherein the second power supply unit is disposed in the portable device. 8. The voltage adjustment system according to claim 1, wherein the second power supply unit is electrically connected to the portable device through an adapter interface. 9. The voltage regulating system according to claim 1, wherein the first power supply unit and the second power supply unit provide the working power at the same time. 10. A voltage adjustment method used in a portable device, characterized in that it at least includes: Transmitting a first power source to a device body: providing a reference voltage through the first power supply; Using the reference voltage to adjust a second power supply to a working power supply: The working power is transmitted to the main body of the device. 11. The voltage adjusting method according to claim 10, further comprising using a lithium battery to provide the first power source. 12. The voltage regulation method according to claim 10, further comprising using a fuel cell to provide the second power source. 13. The voltage adjusting method according to claim 10, further comprising using a notebook computer as the portable device. 14. The voltage adjustment method according to claim 10, further comprising disposing the device main body in the portable device. 15. The voltage adjusting method according to claim 10, further comprising using the working power supply to provide the reference voltage.

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