Power supply control system and power supply control method of energy-saving display equipment

Abstract

The invention discloses a power supply control system and a power supply control method for energy-saving display equipment. The power supply control system comprises a power supply module, a power supply current monitoring module, a main circuit module and a battery module, the power supply module is electrically connected with the power supply current monitoring module. The power supply current monitoring module is electrically connected with the main circuit module and the battery module. The power supply current monitoring module is used for monitoring output current output to the main circuit module by the power supply module and controlling the power supply module to independently supply power to the main circuit module or controlling the power supply module to supply power to the main circuit module and the battery module at the same time according to the magnitude of the output current; or the control power module and the battery module are connected in parallel to supply power to the main circuit module. Therefore, the output current of the power supply module is the optimal efficiency point under the assistance of the battery module, so that energy conservation is realized.

Description

Technical Field

[0001] This invention relates to the technical field of display devices, and in particular to a power control system and power control method for an energy-saving display device. Background Technology

[0002] Most power modules in traditional display devices cannot achieve adaptive load adjustment. Their inherent transformer design (hysteresis loss), switching transistor drive, output rectification and other factors often cause the conversion efficiency curve to show a steep downward trend in the low load area. When the load rate is below 50%, the power efficiency drops by 18-22% from the optimal operating point.

[0003] Inefficient power supplies generate more waste heat, which not only wastes more electrical resources but also causes internal components (such as capacitors and transistors) to operate at higher temperatures, affecting the lifespan of the power supply. At the same time, the internal fan of the power supply needs to run at a higher speed to dissipate heat, resulting in greater noise. Summary of the Invention

[0004] The purpose of this invention is to provide a power control system and power control method for an energy-saving display device, which has the advantage of maintaining the power supply at its optimal efficiency range to achieve energy saving.

[0005] To achieve the above objectives, the solution of the present invention is: A power control system for an energy-saving display device includes a power module, a power supply current monitoring module, a main circuit module, and a battery module. The power module is electrically connected to the power supply current monitoring module, and the power supply current monitoring module is electrically connected to the main circuit module and the battery module respectively. The power supply current monitoring module is used to monitor the output current of the power module to the main circuit module, and control the power module to independently supply power to the main circuit module, or control the power module to supply power to both the main circuit module and the battery module at the same time, or control the power module and the battery module to supply power to the main circuit module in parallel, based on the magnitude of the output current.

[0006] Furthermore, the battery module includes a rechargeable battery, a charging management module, and a discharging management module; the rechargeable battery is electrically connected to the power supply current monitoring module through the charging management module, and is electrically connected to the main circuit module through the discharging management module; at the same time, the discharging management module is also electrically connected to the power supply circuit monitoring module.

[0007] The present invention also provides a power control method for an energy-saving display device, employing the aforementioned power control system; the power control method includes the following steps: Step 1: Equipment operation. The power supply module supplies power to the main circuit module through the power supply circuit monitoring module, and the power supply circuit monitoring module obtains the output current of the power supply module. Step 2: The power supply circuit monitoring module periodically judges the output current and the optimal operating current range; When the output current is within the optimal operating current range, the power supply module only supplies power to the main circuit module; otherwise, it determines whether the output current is less than the optimal operating current range. When the output current is less than the optimal operating current range, the charging management module is activated, causing the power module to charge the rechargeable battery simultaneously, thereby increasing the output current of the power module to the optimal operating current range; otherwise, the discharging management module is activated, causing the rechargeable battery to discharge and supply power to the main circuit module in parallel with the power module, thereby reducing the output current of the power module to the optimal operating current range.

[0008] Furthermore, during the charging and discharging of the rechargeable battery, the battery module power is monitored by a charging management chip to prevent the main circuit from being powered when the battery module is depleted.

[0009] Furthermore, the timed judgment is performed once every 30 seconds or 1 minute.

[0010] By adopting the above technical solution, a power supply circuit monitoring module and a battery module are added to the traditional display setup. When the output current of the power supply module to the main circuit module is less than the optimal efficiency point (optimal operating current range), charging of the battery module is initiated to increase the output current, thereby improving power efficiency and bringing it close to or equal to the optimal efficiency point, thus achieving energy saving. Excess energy can also be stored in the battery module. When the output current of the power supply module is greater than the optimal efficiency point, the battery module is initiated to discharge. By simultaneously supplying power to the load of the main circuit module, the output current of the power supply module can be reduced, bringing the power efficiency close to or equal to the optimal efficiency point, achieving energy saving. Attached Figure Description

[0011] Figure 1 This is the system frame of an embodiment of the present invention; Figure 2 This is a flowchart of a method according to an embodiment of the present invention. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0013] like Figure 1 As shown, a power control system for an energy-saving display device includes a power module, a power supply current monitoring module, a main circuit module, and a battery module.

[0014] The power module is electrically connected to the power supply current monitoring module, and the power supply current monitoring module is electrically connected to the main circuit module and the battery module respectively. The power supply current monitoring module is used to monitor the output current of the power module to the main circuit module, and control the power module to independently supply power to the main circuit module, or control the power module to supply power to both the main circuit module and the battery module at the same time, or control the power module and the battery module to supply power to the main circuit module in parallel, based on the magnitude of the output current.

[0015] By adding a power supply circuit monitoring module and a battery module to the traditional display setup, when the power module's output current to the main circuit module is less than the optimal efficiency point (optimal operating current range), charging of the battery module is initiated to increase the output current, thereby improving power efficiency and bringing it close to or equal to the optimal efficiency point—that is, reaching the highest operating efficiency range—thus achieving energy savings. Excess energy can also be stored in the battery module. When the power module's output current exceeds the optimal efficiency point, the battery module is initiated to discharge. By simultaneously supplying power to the load of the main circuit module, the power module's output current is reduced, bringing the power efficiency close to or equal to the optimal efficiency point, achieving energy savings.

[0016] In this embodiment, the battery module includes a rechargeable battery, a charging management module, and a discharging management module; the rechargeable battery is electrically connected to the power supply current monitoring module through the charging management module, and is electrically connected to the main circuit module through the discharging management module; at the same time, the discharging management module is also electrically connected to the power supply circuit monitoring module.

[0017] Therefore, the charging management module and the discharging management module can be activated to charge or discharge the battery based on the power supply current monitoring module's judgment of the power module's output current.

[0018] The power supply current monitoring module can use a common power supply current monitoring circuit, which generally measures the current by sensing the voltage drop across a resistor.

[0019] Meanwhile, battery life must be considered during charging and discharging to prevent the main circuit from receiving power when the battery is depleted. This can be achieved by monitoring battery level through a charging management chip. A preset setting can be used to prevent power supply to the main circuit when the battery level drops below 50%. Alternatively, the charging management chip can be configured to set a range of battery levels that allow external charging.

[0020] See Figure 2The present invention provides a power control method for an energy-saving display device, employing the aforementioned power control system; the power control method includes the following steps: Step 1: Equipment operation. The power supply module supplies power to the main circuit module through the power supply circuit monitoring module, and the power supply circuit monitoring module obtains the output current of the power supply module. Step 2: The power supply circuit monitoring module periodically judges the output current and the optimal operating current range; When the output current is within the optimal operating current range, the power supply module only supplies power to the main circuit module; otherwise, it determines whether the output current is less than the optimal operating current range. When the output current is less than the optimal operating current range, the charging management module is activated, causing the power module to charge the rechargeable battery simultaneously, thereby increasing the output current of the power module to the optimal operating current range; otherwise, the discharging management module is activated, causing the rechargeable battery to discharge and supply power to the main circuit module in parallel with the power module, thereby reducing the output current of the power module to the optimal operating current range.

[0021] The optimal operating current range can be obtained from the device power efficiency diagram of the display device.

[0022] The timed judgment can be performed every 30 seconds or 1 minute, and the specific interval can be adjusted as needed.

[0023] The above description is merely a preferred embodiment of the present invention, and the scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, equivalent changes and modifications without departing from the principle of the present invention should still fall within the scope of protection of the present invention.

[0024] In the description of the embodiments of this application, it should be understood that the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships commonly used when the product is in use, or the orientations or positional relationships commonly understood by those skilled in the art. These are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In the description of this application, "a plurality of" and "several" mean two or more, unless otherwise explicitly specified.

Claims

1. A power control system for an energy-saving display device, characterized in that: It includes a power supply module, a power supply current monitoring module, a main circuit module, and a battery module; The power module is electrically connected to the power supply current monitoring module, and the power supply current monitoring module is electrically connected to the main circuit module and the battery module respectively. The power supply current monitoring module is used to monitor the output current of the power module to the main circuit module, and control the power module to independently supply power to the main circuit module, or control the power module to supply power to both the main circuit module and the battery module at the same time, or control the power module and the battery module to supply power to the main circuit module in parallel, based on the magnitude of the output current.

2. The power control system of an energy-saving display device according to claim 1, characterized in that: The battery module includes a rechargeable battery, a charging management module, and a discharging management module; the rechargeable battery is electrically connected to the power supply current monitoring module through the charging management module, and is electrically connected to the main circuit module through the discharging management module; at the same time, the discharging management module is also electrically connected to the power supply circuit monitoring module.

3. A power control method of an energy-saving display device, characterized by: The power control system as described in claim 1 is employed; the power control method includes the following steps: Step 1: Equipment operation. The power supply module supplies power to the main circuit module through the power supply circuit monitoring module, and the power supply circuit monitoring module obtains the output current of the power supply module. Step 2: The power supply circuit monitoring module periodically judges the output current and the optimal operating current range; When the output current is within the optimal operating current range, the power supply module only supplies power to the main circuit module; otherwise, it determines whether the output current is less than the optimal operating current range. When the output current is less than the optimal operating current range, the charging management module is activated, causing the power module to charge the rechargeable battery simultaneously, thereby increasing the output current of the power module to the optimal operating current range; otherwise, the discharging management module is activated, causing the rechargeable battery to discharge and supply power to the main circuit module in parallel with the power module, thereby reducing the output current of the power module to the optimal operating current range.

4. The power control method of an energy-saving display device according to claim 3, characterized in that: During the charging and discharging of the rechargeable battery, the battery module power is monitored by the charging management chip to prevent the main circuit from being powered when the battery module is depleted.

5. The power control method of an energy-saving display device according to claim 3, characterized in that: The timed judgment is executed once every 30 seconds or 1 minute.

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