Power control device

Abstract

The invention provides a power control device which is suitable for being electrically connected with a power supply device so as to supply power to a power receiving device. In the power control device, a connecting port is electrically connected with the power supply device, a power controller is electrically connected with the connecting port and the power receiving device, a detector is electrically connected with the connecting port to detect a power supply and correspondingly generate a power signal, and a processor is electrically connected with the power controller and the detector. The processor compares the power supply signal with a preset critical point to select to use a preset upper limit value or dynamically set a use upper limit value, the preset upper limit value is greater than the use upper limit value, and the processor correspondingly generates a control signal to the power supply controller based on the preset upper limit value or the use upper limit value; the power supply controller controls a function parameter of the power supply receiving device according to the control signal.

Description

Technical Field

[0001] The present application relates to a power control device capable of controlling the power usage of a power receiving device. Background Art

[0002] Most existing screen hanging lights use a Universal Serial Bus (USB) for power, allowing them to be powered by connecting to a computer's USB port, a USB charger, or a power bank. However, the power supply capabilities of various computer devices, USB chargers, or power banks vary. If the screen hanging light's power consumption exceeds the power supply, uncontrolled power consumption could cause both the power supply and the screen hanging light to lose power, potentially damaging both devices. Summary of the Invention

[0003] The technical problem to be solved by this application is to provide a power control device suitable for being electrically connected to a power supply device, which supplies power to a power receiving device. The power control device includes a connection port, a power controller, a detector, and a processor. The connection port is electrically connected to the power supply device, and the power controller is electrically connected to the connection port and the power receiving device so that the power controller provides power to the power receiving device through the connection port. A detector is electrically connected to the connection port to detect the power and generate a power signal accordingly. The processor is electrically connected to the power controller and the detector. The processor compares the power signal with a preset critical point to select a preset upper limit value or dynamically set a usage upper limit value, and the preset upper limit value is greater than the usage upper limit value. The processor generates a control signal to the power controller based on the preset upper limit value or the usage upper limit value, so that the power controller controls a functional parameter of the power receiving device according to the control signal.

[0004] In summary, the present application proposes a power control device that can directly detect the voltage, current, or power power signal of a power supply device, and is controlled by a processor to calculate and judge the power signal, and to control the power usage of a back-end power receiving device through a power controller, so that the user can avoid power outages or damage to the power supply device and the power receiving device when adjusting the functional parameters of the power receiving device.

[0005] The details of other functions and embodiments of the present application are described below with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0007] Figure 1 is a block diagram of a power control device according to an embodiment of the present application;

[0008] Figure 2 1 is a schematic diagram of a flow chart of a power control device in operation according to an embodiment of the present application;

[0009] Figure 3 FIG. 4 is a block diagram of a power control device according to another embodiment of the present application. DETAILED DESCRIPTION

[0010] The following describes embodiments of the present application with reference to the accompanying drawings. In addition, some components or structures are omitted from the drawings to clearly illustrate the technical features of the present application. In these drawings, the same reference numerals represent the same or similar components or circuits.

[0011] See also Figure 1 As shown, a power control device 10 is suitable for electrically connecting to a power supply device 12, and the power supply device 12 supplies power to a power receiving device 14. This power control device 10 includes a connection port, a power controller 18, a detector 20 and a processor 22. In this embodiment, the connection port is a universal serial bus (USB) connection port 16 (hereinafter referred to as USB connection port 16).

[0012] like Figure 1As shown, in the power control device 10, the USB connection port 16 is electrically connected to the power supply device 12, so that the power provided by the power supply device 12 is provided to the power control device 10 through the USB connection port 16. One end of the power controller 18 is electrically connected to the USB connection port 16, and the other end is electrically connected to the power receiving device 14, so that the power controller 18 controls the power supply and provides the power to the power receiving device 14 through the USB connection port 16. The detector 20 is electrically connected to the USB connection port 16 to detect the power input from the USB connection port 16 and generate a power signal corresponding to the power. In one embodiment, if the detector 20 is a voltage detector, the power signal is a voltage signal; if the detector 20 is a current detector, the power signal is a current signal; if the detector 20 is a power detector, the power signal is a power signal. One end of the processor 22 is electrically connected to the power controller 18, and the other end is electrically connected to the detector 20. The processor 22 is further electrically connected to the USB connection port 16 via a data transmission line 24 to facilitate data transmission. When the processor 22 receives a power signal detected by the detector 20, the processor 22 compares the power signal with a preset threshold and selects to use a preset upper limit or dynamically set a usage upper limit. The preset upper limit is greater than the usage upper limit. For example, when the preset upper limit is 100%, the usage upper limit can be 80%, but the present application is not limited to this. After comparing the power signal with the preset threshold, the processor 22 generates a control signal to the power controller 18 based on the preset upper limit or the usage upper limit. The power controller 18 controls a functional parameter of the power receiving device 14 according to the control signal, so that the functional parameter can be adjusted within the range of the preset upper limit or the usage upper limit.

[0013] When the processor 22 compares the power signal with a preset critical point, if the power signal does not reach the preset critical point, the processor 22 selects to use the preset upper limit value, so that the power controller 18 can adjust the functional parameters of the power receiving device 14 according to the control signal within the range of the preset upper limit value. If the power signal reaches the preset critical point, the processor 22 selects to set the upper limit value and use this upper limit value instead of the preset upper limit value, so that the power controller 18 can adjust the functional parameters of the power receiving device 14 according to the control signal within the range of the upper limit value, and can only adjust the functional parameters to the upper limit value.

[0014] In one embodiment, if Figure 1 As shown, the processor 22 is further electrically connected to a user controller 30, allowing the user to adjust the functional parameters of the power receiving device 14 within a preset upper limit range or within a use upper limit range via the user controller 30. In one embodiment, the user controller 30 can be a computer, a mobile phone, a button, a knob, or a remote control, but the present application is not limited thereto.

[0015] In one embodiment, the power signals compared by processor 22 are primarily voltage values. If the detector 20 used is a current detector, upon receiving the current signal, processor 22 will calculate and convert the current signal into a voltage value for comparison. Similarly, if the detector 20 used is a power detector, upon receiving the power signal, processor 22 will calculate and convert the power signal into a voltage value for subsequent comparison.

[0016] like Figure 1 As shown, when the power receiving device 14 is powered on, the processor 22 loads the previous usage upper limit value from the last time the device was powered off. It then gradually increases the function parameter of the power receiving device 14 from zero to the previous usage upper limit value. The processor 22 compares the power signal with a preset critical point. If it is determined that the power signal has not reached the preset critical point during this period, the processor 22 automatically adjusts the setting value of the power receiving device 14 to the previous usage upper limit value. If the power signal reaches the preset critical point before the function parameter is gradually adjusted to the previous usage upper limit value, the processor 22 sets the setting value corresponding to the function parameter at that time as the usage upper limit value, thereby serving as the upper limit of the adjustable function parameter of the power receiving device 14.

[0017] In one embodiment, when the power receiving device 14 is a light bar or a USB monitor, the function parameter is a brightness parameter to adjust the brightness level of the light bar or USB monitor. When the power receiving device 14 is a USB fan, the function parameter is an intensity parameter to adjust the rotation intensity level of the USB fan.

[0018] In one embodiment, the processor 22 may be, but is not limited to, a central processing unit (CPU), a microcontroller unit (MCU), a microprocessor (Microprocessor), a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a system on a chip (SOC), or other similar components or combinations thereof.

[0019] Please also see Figure 1 and Figure 2As shown, the power receiving device 14 is used as an example of a screen hanging lamp. When the brightness of the power receiving device 14 (screen hanging lamp) is to be adjusted, as shown in step S10, the user adjusts the power receiving device 14 (screen hanging lamp) to increase the brightness. As shown in step S12, the detector 20 detects the power supply and transmits the corresponding power signal to the processor 22. As shown in step S14, the processor 22 determines whether the power signal has reached the preset critical point. If the power signal has not reached the preset critical point, as shown in step S16, the brightness is adjusted, and the functional parameter (brightness parameter) is adjusted to the brightness desired by the user. If the power signal has reached the preset critical point, as shown in step S18, the set value corresponding to the power supply device 12 can provide at this time is set as the new upper limit of usage, so that the power controller 18 controls the functional parameters of the power receiving device 14 according to the control signal and can be adjusted within the range of the new upper limit of usage. Next, as shown in step S20, the power receiving device 14 (screen hanging lamp) is adjusted to reduce its brightness so that the brightness (functional parameter) falls within the new upper limit range. The functional parameter can only be adjusted to this new upper limit. Finally, as shown in step S22, because the detector 20 continuously detects power changes in the power supply device 12, when the processor 22 determines that the power signal has left the preset critical point, the processor 22 cancels the aforementioned new upper limit and returns the power receiving device 14 to the original preset upper limit.

[0020] See also Figure 3As shown, a power control device 10 includes a connection port, a power controller 18, a detector 20, a processor 22, and a power delivery controller 28. In this embodiment, the connection port is a Universal Serial Bus Type-C (USB Type-C) port 26 (hereinafter referred to as USB Type-C port 26). In the power control device 10, the USB Type-C port 26 is electrically connected to the power supply device 12, so that power provided by the power supply device 12 is provided to the power control device 10 via the USB Type-C port 26. One end of the power controller 18 is electrically connected to the USB Type-C port 26, and the other end is electrically connected to the power receiving device 14. The power controller 18 controls the power supply and provides power to the power receiving device 14 through the USB Type-C port 26 and the power controller 18. The detector 20 is electrically connected to the USB Type-C port 26 to detect the power input from the USB Type-C port 26 and generate a power signal corresponding to the power supply. One end of the processor 22 is electrically connected to the power controller 18 and the other end is electrically connected to the detector 20. The processor 22 is further electrically connected to the USB Type-C port 26 via a data transmission line 24 to facilitate data transmission. The power transmission controller 28 is electrically connected to the USB Type-C port 26 at one end and to the processor 22 at the other end. The power transmission controller 28 generates a preset threshold value based on a transmission handshake message. When the processor 22 receives a power signal detected by the detector 20, it compares the power signal with the preset threshold value and selects to use a preset upper limit value or dynamically set a usage upper limit value, where the preset upper limit value is greater than the usage upper limit value. If the power signal does not reach the preset threshold value, the processor 22 selects to use the preset upper limit value and generates a control signal based on the preset upper limit value to the power controller 18, so that the power controller 18 controls the functional parameters of the power receiving device 14 to be adjusted within the preset upper limit value range according to the control signal. When the power signal reaches a preset critical point, the processor 22 selects to set an upper limit value and uses this upper limit value to replace the preset upper limit value, and generates a control signal to the power controller 18 based on the upper limit value, so that the power controller 18 controls the functional parameters of the power receiving device 14 according to the control signal to be adjusted within the range of the upper limit value, and the functional parameters can only be adjusted to the upper limit value at most.

[0021] In one embodiment, if Figure 3 As shown, the processor 22 is also electrically connected to a user controller 30 , so as to allow the user to adjust the functional parameters of the power receiving device 14 within a preset upper limit range or within a use upper limit range through the user controller 30 .

[0022] In one embodiment, the processor 22 further includes a built-in level comparison table (not shown). Upon receiving the preset critical point, the processor 22 can generate a corresponding upper limit based on the preset critical point and the level comparison table. For example, if the level comparison table is a brightness comparison table, the power consumption and brightness level at the preset critical point are shown in Table 1 below. The processor 22 can then query the brightness comparison table based on the power consumption at the preset critical point and the brightness level to determine the corresponding brightness level, and use this brightness level as the upper limit.

[0023] Table 1

[0024] Brightness level (%) Power consumption (W) 10 0.9 20 1.3 30 1.6 40 1.9 50 2.3 60 2.7 70 3.1 80 3.5 90 3.8 100 4.3

[0025] like Figure 3 As shown, when the power receiving device 14 is turned on, the processor 22 calculates the amount of power that the power supply device 12 can provide based on the transmission handshake information. Subsequently, the processor 22 loads a previous usage upper limit value before the last shutdown. If the power setting corresponding to the previous usage upper limit value is within the range of power that the power supply device 12 can provide, the processor 22 sets the previous usage upper limit value as the latest usage upper limit value, and automatically adjusts the function parameters to the previous usage upper limit value. If the power setting corresponding to the previous usage upper limit value exceeds the power range, the usage upper limit value is adjusted to the setting corresponding to the power that the power supply device 12 can provide as the new usage upper limit value, and the function parameters are adjusted to the latest usage upper limit value instead of the previous usage upper limit value.

[0026] Please also see Figure 2 and Figure 3 As shown, Figure 3 When the user adjusts the brightness of the power receiving device 14 (screen hanging lamp), the steps of the power control device 10 shown are the same as those of the power control device 10 shown in FIG. Figure 2 The processes shown are the same, so please refer to the above detailed description and will not be repeated here.

[0027] In one embodiment, please also refer to Figure 1 or Figure 3 As shown, power supply device 12 is a computer device that provides power to power receiving device 14 via power control device 10. In this case, the computer device has built-in application software (application program) that can adjust the functional parameters of power receiving device 14. Processor 22 transmits data related to the functional parameter adjustment to the computer device via USB port 16 or USB Type-C port 26, allowing the functional parameters to be adjusted via the application software. Furthermore, processor 22 can transmit the currently set preset upper limit or usage upper limit to the application software, and the application software can simultaneously limit the user's usage parameter range (adjustable range) for adjusting the functional parameters.

[0028] In summary, the present application proposes a power control device that can directly detect the voltage, current or power power signal of a power supply device, and is controlled by a processor to calculate and judge the power signal, and control the power usage of a rear-end power receiving device (for example, a screen hanging lamp, a USB screen or a USB fan) through a power controller, so that the user can avoid power outage or damage to the power supply device and the power receiving device when adjusting the functional parameters of the power receiving device.

[0029] The embodiments and / or implementation methods described above are only used to illustrate the preferred embodiments and / or implementation methods for realizing the technology of the present application, and do not impose any form of limitation on the implementation methods of the technology of the present application. Any person skilled in the art may make slight changes or modifications to other equivalent embodiments without departing from the scope of the technical means disclosed in the content of the present application, but they should still be regarded as technologies or embodiments that are essentially the same as those of the present application.

Claims

1. A power control device, adapted to be electrically connected to a power supply device, wherein the power supply device supplies power to a power receiving device, wherein: The power control device comprises: a connection port, electrically connected to the power supply device; a power controller electrically connected to the connection port and the power receiving device, so that the power controller provides the power to the power receiving device through the connection port; a detector electrically connected to the connection port to detect the power supply and generate a power signal accordingly; as well as A processor is electrically connected to the power controller and the detector. The processor compares the power signal with a preset critical point to select a preset upper limit value or a dynamically set upper limit value for use, and the preset upper limit value is greater than the upper limit value for use. The processor generates a control signal to the power controller based on the preset upper limit value or the upper limit value for use, so that the power controller controls the functional parameters of the power receiving device according to the control signal.

2. The power control device according to claim 1, characterized in that: When the power signal does not reach the preset critical point, the preset upper limit value is selected for use, so that the power controller controls the functional parameters of the power receiving device to be adjusted for use within the range of the preset upper limit value according to the control signal; and when the power signal reaches the preset critical point, the usage upper limit value is selected for setting, so that the power controller controls the functional parameters of the power receiving device to be adjusted for use within the range of the usage upper limit value according to the control signal.

3. The power control device according to claim 2, characterized in that: When the power receiving device is turned on, the processor loads the previous usage upper limit value before the last shutdown, and increases the functional parameter of the power receiving device in stages from zero to the previous usage upper limit value. If it is determined that the power signal during this period has not reached the preset critical point, the processor automatically adjusts it to the previous usage upper limit value; and if the power signal has reached the preset critical point before the functional parameter is adjusted to the previous usage upper limit value, the set value corresponding to the functional parameter at this time is set as the usage upper limit value.

4. The power control device according to claim 2, characterized in that: The connection port is a USB connection port.

5. The power control device according to claim 4, characterized in that: When the power receiving device is a screen hanging lamp or a USB screen, the functional parameter is a brightness parameter; or when the power receiving device is a USB fan, the functional parameter is an intensity parameter.

6. The power control device according to claim 2, characterized in that: The connection port is a USB Type-C connection port.

7. The power control device according to claim 6, characterized in that: The device further includes a power transmission controller electrically connected to the USB Type-C connection port and the processor, and the power transmission controller generates the preset critical point according to the transmission handshake information.

8. The power control device according to claim 7, characterized in that: The processor further has a built-in level comparison table. When the processor receives the preset critical point, the processor generates the corresponding usage upper limit value according to the preset critical point and the level comparison table.

9. The power control device according to claim 8, characterized in that: When the power receiving device is turned on, the processor calculates the amount of power that the power supply device can provide based on the transmission handshake information. After the processor loads the previous usage upper limit value before the last shutdown, when the power setting corresponding to the previous usage upper limit value is within the range of the power, the previous usage upper limit value is set as the usage upper limit value. When the power setting corresponding to the previous usage upper limit value exceeds the range of the power, the usage upper limit value is adjusted to the setting value corresponding to the amount of power that the power supply device can provide.

10. The power control device according to claim 6, characterized in that: When the power receiving device is a screen hanging lamp or a USB screen, the functional parameter is a brightness parameter; or when the power receiving device is a USB fan, the functional parameter is an intensity parameter.

11. The power control device according to claim 1, wherein: It further includes a data transmission line electrically connecting the connection port and the processor.

12. The power control device according to claim 1, wherein: The detector is a voltage detector, and the power signal is a voltage signal.

13. The power control device according to claim 1, wherein: The detector is a current detector, and the power signal is a current signal.

14. The power control device according to claim 1, wherein: The detector is a power detector, and the power signal is a power signal.

15. The power control device according to claim 1, wherein: When the power supply device is a computer device, the computer device has built-in application software that adjusts the functional parameters of the power receiving device. The processor transmits relevant data to the computer device through the connection port so that the functional parameters can be adjusted by the application software. The processor also transmits the currently set preset upper limit value or the usage upper limit value to the application software, and at the same time, the application software limits the user's adjustment of the usage parameter range of the functional parameter.

16. The power control device according to claim 2, characterized in that: The device further includes a user controller electrically connected to the processor, so as to adjust the functional parameter of the power receiving device within the range of the preset upper limit value or the range of the use upper limit value through the user controller.

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