TWI675274B - Smart power supply system and method thereof - Google Patents

Abstract

An intelligent power supply system connects a power source through an input terminal to provide power to a control module, so that the control module can receive an application voltage range from an electronic product. The control module controls the power module according to the application voltage range, so that the output terminal The output voltage value is gradually increased from low to high according to the application voltage range. During the process, the input voltage value, input current value and output voltage value at the input end are detected, and the corresponding input power is calculated, and the output voltage value is stored one by one. And its corresponding input power, and then, the power module is controlled according to the output voltage value corresponding to the minimum input power of the stored input powers, so that the output voltage value at the output end is the optimal voltage value. Therefore, waste heat and energy costs can be reduced.

Description

Intelligent power supply system and method

The invention relates to a power supply system and a method thereof, in particular to an intelligent power supply system and a method thereof.

Except for dry and simple electronic products that use dry batteries, most electronic products use power supplies or transformers to obtain electricity. Most of these power supplies or transformers convert AC power provided by the city power to DC power, and then pass through The steps of filtering and voltage conversion generate a stable DC voltage to provide power for the use of electronic products.

With the development of environmental protection concepts, in the field of power technology, improving power efficiency is an important trend. It is known that the power supply uses its structure and selected components to improve power efficiency. Therefore, the output voltage of the power supply cannot be automatically adjusted for different electronic products, so that the overall efficiency of the power supply cannot be further improved.

In summary, it can be known that there is a problem in the prior art that the power supply cannot automatically adjust the output voltage for different electronic products. Therefore, it is necessary to propose improved technical means to solve this problem.

The invention discloses an intelligent power supply system and a method thereof.

First, the present invention discloses an intelligent power supply system including: an input terminal, a power module, an output terminal and a control module, the power module is connected to the input terminal, the output terminal is connected to the power module, the control module is connected to the input terminal, Power module and output. The input terminal is connected to a power source to provide power; the control module receives the power to receive an application voltage range from an electronic product, and controls the power module according to the application voltage range so that the output voltage value at the output terminal is based on the application voltage. The range is gradually increased from low to high; in the process of gradually increasing the output voltage value from low to high according to the application voltage range, the control module detects the input voltage value and input current value of the input terminal and the output voltage value of the output terminal and calculates Corresponding input power, and successively store the output voltage value and its corresponding input power; when the output voltage value is the maximum value of the application voltage range and the control module stores the output voltage value and its corresponding input power, the control module The output voltage corresponding to the minimum input power of these input powers controls the power module so that the output voltage value at the output end is the optimal voltage value.

Then, the present invention discloses a method for smart power supply, the steps of which include: providing a smart power supply system, including: an input terminal, a power module, an output terminal and a control module, the input terminal is connected to the power module, and the power module The group is connected to the output terminal, and the control module is connected to the input terminal, the power module and the output terminal; the input terminal is connected to the power supply to provide power to the control module; the control module receives the application voltage range from the electronic product, and according to the application voltage range Control the power module so that the output voltage value of the output terminal is gradually increased from low to high according to the application voltage range; during the process of the output voltage value is gradually increased from low to high according to the application voltage range, the control module detects the input voltage of the input terminal Value and input current value and output voltage value at the output end, and calculate the corresponding input power, and store the output voltage value and its corresponding input power one by one; and when the output voltage value is the maximum value of the application voltage range and the control module stores the output After the voltage value corresponds to the input power, the control module The minimum input power of the power value corresponding to the output voltage control power module, so that the output voltage value of the optimum value of the voltage output terminal.

The system and method disclosed in the present invention are as above. The difference from the prior art is that the present invention controls the power module through the control module through the application voltage range transmitted by the electronic product to gradually increase the output voltage value, and detects in the process. Measure the input voltage value, input current value and output voltage value, calculate the input power, store the output voltage value and the corresponding input power, and then control the power module based on the output voltage value corresponding to the minimum input power of the stored input power Group so that the output voltage value at the output is the optimal voltage value.

Through the above technical means, the present invention can achieve the technical effects of reducing waste heat and saving energy costs.

In the following, the embodiments of the present invention will be described in detail with reference to the drawings and examples, so as to fully understand and implement the implementation process of how the present invention applies technical means to solve technical problems and achieve technical effects.

Please refer to "Figure 1" and "Figure 2" first, "Figure 1" is a system block diagram of an embodiment of the intelligent power supply system of the present invention, and "Figure 2" is a smart type of "Figure 1" The power supply system executes a method flowchart of an embodiment of a smart power supply method. The intelligent power supply system 100 includes: an input terminal 102, a power module 104, an output terminal 106, and a control module 108. The power module 104 is connected to the input terminal 102, the output terminal 106 is connected to the power module 104, and the control module 108 is connected to input. Terminal 102, power module 104 and output terminal 106 (ie step 210). The power module 104 may include: an electromagnetic interference (EMI) filter circuit 40, a primary-side rectification filter circuit 42, a transformer circuit 44 and a secondary-side rectification filter circuit 46, and the EMI filter circuit 40 is connected to the input terminal 102, The primary-side rectification and filtering circuit 42 is connected to the EMI filter circuit 40, the voltage transformation circuit 44 is connected to the primary-side rectification filter circuit 42, and the secondary-side rectification and filtering circuit 46 is connected to the voltage transformation circuit 44.

In this embodiment, the smart power supply method executed by the smart power supply system 100 may include the following steps: the input end is connected to a power source to provide power to the control module (step 220); the control module receives the power from the electronic product. Apply the voltage range, and control the power module according to the voltage range from the application, so that the output voltage value at the output end is gradually increased according to the application voltage range (step 230); the output voltage value is gradually adjusted according to the application voltage range from low to high During the ascent process, the control module detects the input voltage value, the input current value and the output voltage value of the output terminal, calculates the corresponding input power, and stores the output voltage value and its corresponding input power one by one (step 240); And after the output voltage value is the maximum value of the application voltage range and the control module stores the output voltage value and its corresponding input power, the control module controls the power module according to the output voltage value corresponding to the minimum input power of the stored input power. Group so that the output voltage value at the output terminal is the optimal voltage value (step 250)

In step 220, the input terminal 102 can be connected to a mains power or a general DC power source (ie, a power source, not shown) to provide power to the control module 108, so that the control module 108 can perform subsequent steps 230 to 250. In step 230, when the smart power supply system 100 is connected to the electronic product 50, the control module 108 can receive the application voltage range from the electronic product 50 and control the power module 104 according to the application voltage range so that the output terminal 106 The output voltage value gradually increases from low to high according to the application voltage range. In more detail, when the control module 108 receives power from the input terminal 102, it can detect whether the smart power supply system 100 is connected to the electronic product 50. If the control module 108 detects that the smart power supply system 100 is connected to the electronic product 50, When the electronic product 50 has the information transmission interface 52, if the control module 108 detects that the electronic product 50 has the information transmission interface 52, the control module 108 can obtain it from the electronic product 50 through the information transmission interface 52. The electronic product 50 has an application voltage range, but this embodiment is not intended to limit the present invention. For example, when the smart power supply system 100 is connected to the electronic product 50, the electronic product 50 can transmit the application voltage range it has from the information transmission interface 52 to the control module 108. The information transmission interface 52 may be, but is not limited to, a Universal Asynchronous Receiver / Transmitter (UART) or an Inter-Integrated Circuit (I ² C). In other words, the electronic product 50 Built-in storage unit is used to store its application voltage range (that is, its applicable voltage range). When the control module 108 detects that the electronic product 50 has an information transmission interface 52, the electronic product 50 can be passively controlled by the control module 108 obtains the application voltage range stored by the electronic product 50 through the information transmission interface 52; or when the smart power supply system 100 is connected to the electronic product 50, the electronic product 50 can actively transmit its stored application voltage range to the control module 108.

After the control module 108 receives the application voltage range from the electronic product 50, the control module 108 can control the power supply module 104 according to the application voltage range, so that the output voltage value of the output terminal 106 is gradually adjusted from low to high within the application voltage range. The output voltage value of the output terminal 106 can be adjusted at equal intervals or unequal intervals. The interval can be, but is not limited to, 0.1 volts (Voltage, V), which can be adjusted according to actual needs. In this embodiment, for a method of controlling the power module 104 by the control module 108 according to the application voltage range, please refer to the following description. In this embodiment, since the power received by the input terminal 102 is AC power (that is, mains power), the EMI filter circuit 40 can be used to receive AC signals from the power source and filter out noise from the AC signals to suppress the AC signals. High-frequency interference affects the electronic product 50; the primary-side rectification filter circuit 42 can be used to rectify and filter the AC signal from the EMI filter circuit 40 to output a DC signal, and adjust it according to the pulse width output by the control module 108 Variable (Pulse Width Modulation, PWM) signal (which can be adjusted according to the application voltage range) controls the DC signal and transmits the primary-side voltage signal to the transformer circuit 44; the transformer circuit 44 can be used for the primary-side rectification filter circuit The primary voltage number of 42 is used to perform the voltage transformation procedure (ie, boost or step down) to output the secondary voltage signal; the secondary-side rectification and filtering circuit 46 can be used according to the control of the control module 108 (depending on the range from the application voltage) Adjust) rectify and filter the secondary-side voltage signal from the transformer circuit 44 to output a specific signal (ie, the output end 106 (the expected output voltage value, which falls within the application voltage range) to the output terminal 106 for the output terminal 106 to output.

Among them, the primary-side rectifier and filter circuit 42 may include a bridge rectifier, a filter capacitor, and a transistor switching unit. The bridge rectifier is connected to the filter capacitor, and the filter capacitor is connected to the transistor switch unit. The signal is rectified to DC the AC signal; the filter capacitor can be used to filter the DC AC signal (that is, to smooth the waveform of the DC AC signal) to output the DC signal; the transistor switching unit can pass through the control module 108. The output PWM signal is switched to enable the DC signal to be converted into a primary-side voltage signal. However, this embodiment is not intended to limit the present invention, and may be adjusted according to the actual situation.

For example, the power received by the input terminal 102 may be DC. Therefore, the EMI filter circuit 40 may be used to receive a DC signal from the power source and filter out noise from the DC signal to reduce the source of electromagnetic interference; the primary-side rectification filter circuit 42 can be used to rectify and filter the DC signal from the EMI filter circuit 40, and control the DC signal according to the PWM signal output by the control module 108 (which can be adjusted according to the application voltage range) to transmit the primary voltage signal The pre-transformation circuit 44; the transformer circuit 44 may be used to perform a transformation procedure (ie, boost or buck) on the primary voltage number from the primary-side rectification filter circuit 42 to output a secondary-side voltage signal; secondary-side rectification The filter circuit 46 can be used to rectify and filter the secondary-side voltage signal from the transformer circuit 44 according to the control of the control module 108 (which can be adjusted according to the application voltage range) to output a specific signal (that is, the expected output of the output terminal 106) (The output voltage value is within the application voltage range) to the output terminal 106 for the output terminal 106 to output.

In step 240, the control module 108 can detect the input voltage value and input current value of the input terminal 102 and the output voltage value of the output terminal 106 during the process of gradually increasing the output voltage value from low to high according to the application voltage range. The corresponding input power is calculated, and the output voltage value and its corresponding input power are successively stored. The input power is the product of the input voltage and the input current.

In this embodiment, since the intelligent power supply system 100 may be, but is not limited to, an isolated power supply device, the control module 108 may include a primary-side control sub-module 30, a digital isolator 31, and a secondary The secondary control sub-module 32 and the primary control sub-module 30 are used to detect the input voltage value and input current value of the input terminal 102 and control the power supply module 104 to further control the output voltage value of the output terminal 106. The secondary side control The secondary module 32 is used to detect the output voltage value of the output terminal 106 and transmit the application voltage range from the electronic product 50 to the digital isolator 31. The digital isolator 31 digitizes the application voltage range and transmits it to the primary control time. Module 30.

In step 250, after the output voltage value is the maximum value of the application voltage range and the control module 108 stores the output voltage value (that is, the maximum value of the application voltage range) and the corresponding input power, the control module 108 according to the stored The output voltage value corresponding to the minimum input power of these input powers controls the power supply module 104 so that the output voltage value of the output terminal 106 is the optimal voltage value, and the output voltage value of the output terminal 106 is maintained as the optimal voltage value. In order to achieve the technical effect of reducing waste heat and saving energy costs. For details, please refer to "Figure 3". "Figure 3" is a graph of one of the input power and output voltage values of the intelligent power supply system of "Figure 1". Among them, the horizontal axis and the vertical axis They are the output voltage value and the input power. The input power is expressed in Watts (W). According to the "Figure 3", the application voltage range of this embodiment can be 9V to 18V (that is, the minimum value of the output voltage is 9V and the maximum value is 18V). According to different output voltage values, the intelligent power supply system 100 Have different input power; and have the smallest input power when the output voltage value is 11V. Therefore, the control module 108 controls the power module 104 according to the output voltage value (ie, 11V) corresponding to the minimum input power, so that the output voltage value of the output terminal 106 is the optimal voltage value (ie, 11V), and maintains the output terminal 106 The output voltage value is the optimal voltage value (that is, 11V). It should be noted that the control module 108 does not need to draw a graph of input power and output voltage in the process of finding the minimum input power. This section is for the convenience of explaining how the control module 108 finds the optimal voltage value. The graph of the output voltage value will be explained.

In addition, the intelligent power supply system 100 may further include a protection module 109, which is connected to the power module 104 and the control module 108. When the protection module 109 detects that the power module 104 generates an abnormal state, it transmits an abnormal signal to the control module. 108, to enable the control module 108 to turn off the power module 104 for a specific time (that is, the power module 104 cannot operate in a specific time. In this embodiment, the control module 108 can control the power module 104 through a PWM signal to make the power supply The module 104 cannot operate); and the protection module 109 detects whether the power module 104 still generates an abnormal state after a certain period of time, and if so, transmits an abnormal signal to the control module 108 to cause the control module 108 to turn off the power module A specific time; if not, a recovery signal is transmitted to the control module 108, so that the control module 108 turns on the power module 104 (in this embodiment, the control module 108 can control the power module 104 through a PWM signal, so that The power module 104 resumes operation), so that the intelligent power supply system 100 normally supplies power to the electronic products 50. The abnormal state may be, but is not limited to, an excessively high temperature or an overcurrent state.

In summary, the difference between the present invention and the prior art is that the power module is controlled by the control module through the application voltage range transmitted by the electronic product to gradually increase the output voltage value and detect the input voltage in the process. Value, input current value, and output voltage value, and calculate the input power, store the output voltage value and the corresponding input power, and then control the power module based on the output voltage value corresponding to the minimum input power of the stored input power to The output voltage value at the output end is made to be the optimal voltage value. By this technical means, the problems existing in the prior art can be solved, and the technical effect of reducing waste heat and saving energy cost can be achieved.

Although the present invention is disclosed in the foregoing embodiments as above, it is not intended to limit the present invention. Any person skilled in similar arts can make some modifications and retouches without departing from the spirit and scope of the present invention. The scope of patent protection shall be determined by the scope of the patent application attached to this specification.

30‧‧‧Primary Control Sub Module

31‧‧‧Digital Isolator

32‧‧‧ secondary control sub-module

40‧‧‧ electromagnetic interference filter circuit

42‧‧‧Primary rectifier filter circuit

44‧‧‧Transformer circuit

46‧‧‧Secondary rectification filter circuit

50‧‧‧Electronic products

52‧‧‧ Information Transmission Interface

100‧‧‧ Smart Power Supply System

102‧‧‧input

104‧‧‧Power Module

106‧‧‧output

108‧‧‧Control Module

109‧‧‧Protection Module

Step 210‧‧‧ provides an intelligent power supply system including: an input terminal, a power module, an output terminal and a control module, the input terminal is connected to the power module, the power module is connected to the output terminal, and the control module is connected to the input terminal, Power module and output

Step 220‧‧‧ Input terminal is connected to power to provide power to the control module

Step 230‧‧‧ The control module receives the application voltage range from the electronic product, and controls the power module according to the application voltage range, so that the output voltage value of the output terminal is gradually increased according to the application voltage range from low to high.

Step 240‧‧‧ In the process of gradually increasing the output voltage value from low to high according to the application voltage range, the control module detects the input voltage value and input current value of the input terminal and the output voltage value of the output terminal, and calculates the corresponding input. Power, and successively store the output voltage value and its corresponding input power

Step 250‧‧‧ When the output voltage value is the maximum value of the application voltage range and the control module stores the output voltage value and the corresponding input power, the control module outputs the output corresponding to the minimum input power of the stored input power. The voltage value controls the power module so that the output voltage value at the output end is the optimal voltage value

FIG. 1 is a system block diagram of an embodiment of a smart power supply system according to the present invention. FIG. 2 is a method flowchart of an embodiment of the smart power supply system of FIG. 1 executing a smart power supply method. Fig. 3 is a graph showing one embodiment of the input power and output voltage values of the intelligent power supply system of Fig. 1.

Claims (10)

An intelligent power supply system includes: an input terminal connected to a power supply for providing power; a power module connected to the input terminal; an output terminal connected to the power module; and a control module, The input terminal, the power module and the output terminal are connected to receive the power to receive an application voltage range from an electronic product, and control the power module according to the application voltage range so that the output terminal An output voltage value is gradually increased from low to high according to the application voltage range; wherein, in a process in which the output voltage value is gradually increased from low to high according to the application voltage range, the control module detects an input voltage at the input terminal. Value and an input current value and the output voltage value of the output terminal, and calculate a corresponding input power, and store the output voltage value and the corresponding input power one by one; when the output voltage value is the maximum of the application voltage range Value and the control module stores the output voltage value and the corresponding input power, the control module according to the stored inputs The minimum input power ratio corresponding to an output voltage value of the power control module, so that the output voltage of the output terminal of the voltage value of an optimum value. According to the intelligent power supply system of the first patent application scope, the control module is also used to detect whether the intelligent power supply system is connected to the electronic product; if the control module detects the intelligent power supply When the system is connected to the electronic product, it is further detected whether the electronic product has an information transmission interface; if the control module detects that the electronic product has the information transmission interface, the control module uses the information transmission interface from the information transmission interface to The electronic product obtains the application voltage range that the electronic product has. The intelligent power supply system according to item 1 of the scope of patent application, wherein when the intelligent power supply system is connected to the electronic product, the electronic product transmits the application voltage range it has from an information transmission interface to the control module. . According to the intelligent power supply system of the first patent application scope, the control module includes a primary-side control sub-module, a digital isolator and a secondary-side control sub-module. The secondary control sub-module is used to detect the input voltage value and the input current value of the input terminal and to control the power module to further control the output voltage value of the output terminal. The secondary-side control sub module is used to detect The output voltage value at the output terminal and the application voltage range from the electronic product are transmitted to the digital isolator. The digital isolator digitizes the application voltage range and transmits it to the primary control sub-module. According to the intelligent power supply system of the first patent application scope, the intelligent power supply system further includes a protection module, which is connected to the power module and the control module. When the protection module detects the power module When the group generates an abnormal state, an abnormal signal is transmitted to the control module to cause the control module to turn off the power module for a specific time; and after the specific time has elapsed, the protection module detects whether the power module is still The abnormal state is generated, if yes, the abnormal signal is transmitted to the control module, so that the control module turns off the power module for the specific time; if not, a recovery signal is transmitted to the control module, so that the control module The group turns on the power module so that the intelligent power supply system can supply power to the electronic product normally. A smart power supply method includes the steps of: providing a smart power supply system including: an input terminal, a power module, an output terminal, and a control module; the input terminal is connected to the power module, and A power module is connected to the output terminal, and the control module is connected to the input terminal, the power module and the output terminal; the input terminal is connected to a power source to provide a power to the control module; the control module receives from a An application voltage range of the electronic product, and the power module is controlled according to the application voltage range, so that an output voltage value of the output terminal is gradually increased from low to high according to the application voltage range; the output voltage value is based on the application In the process of gradually increasing the voltage range from low to high, the control module detects an input voltage value and an input current value of the input terminal and the output voltage value of the output terminal, and calculates a corresponding input power, and successively Storing the output voltage value and the corresponding input power; and when the output voltage value is the maximum value of the application voltage range and the control module After storing the output voltage value and the corresponding input power, the control module controls the power module according to the output voltage value corresponding to the minimum input power of the stored input power, so that the output voltage value at the output terminal is An optimal voltage value. The smart power supply method according to item 6 of the patent application scope, wherein the smart power supply method further includes: the control module detects whether the smart power supply system is connected to the electronic product; if the control module detects When the smart power supply system is connected to the electronic product, it is further detected whether the electronic product has an information transmission interface; and if the control module detects that the electronic product has the information transmission interface, the control module uses The information transmission interface obtains the application voltage range that the electronic product has from the electronic product. The smart power supply method according to item 6 of the scope of patent application, wherein the smart power supply method further includes: when the smart power supply system is connected to the electronic product, the electronic product transmits its own information from an information transmission interface. The application voltage range is given to the control module. The intelligent power supply method according to item 6 of the patent application scope, wherein the control module includes a primary-side control sub-module, a digital isolator, and a secondary-side control sub-module. The secondary control sub-module is used to detect the input voltage value and the input current value of the input terminal and to control the power module to further control the output voltage value of the output terminal. The secondary-side control sub module is used to detect The output voltage value at the output terminal and the application voltage range from the electronic product are transmitted to the digital isolator. The digital isolator digitizes the application voltage range and transmits it to the primary control sub-module. According to the smart power supply method according to item 6 of the patent application scope, wherein the smart power supply system further includes a protection module, connecting the power module and the control module, the smart power supply method further includes: when When the protection module detects that the power module generates an abnormal state, it transmits an abnormal signal to the control module, so that the control module turns off the power module for a specific time; and the protection mode is passed after the specific time elapses. The group detects whether the power module still generates the abnormal state, and if so, transmits the abnormal signal to the control module, so that the control module turns off the power module for the specific time; if not, transmits a recovery signal to The control module enables the control module to turn on the power module, so that the intelligent power supply system can normally supply power to the electronic product.