Dual power adapter

Abstract

The utility model discloses a dual power adapter, including the shell, be provided with first power input interface, second power input interface, power switch module, filter circuit, voltage stabilizing circuit and output interface in the shell. First power input interface and second power input interface are electric connection with the two power of outside respectively, filter circuit is used to filter processing to the power of input, voltage stabilizing circuit is used to voltage stabilizing processing to the power after filtering, the output interface is used for the stable power output to the power utilization equipment, the utility model relates to power adapter technical field, through dual power input design and intelligent switch module, realize millisecond level power switch, seamless link up standby power when main power failure, ensure the critical equipment continuous operation, effectively avoid the loss such as data loss, equipment damage caused by power failure, especially applicable to medical treatment, communication, finance and other extremely high scene of power stability requirement.

Description

Technical Field

[0001] This utility model relates to the field of power adapter technology, specifically a dual power adapter. Background Technology

[0002] With the continuous development of technology, electronic devices are being used more and more widely, and the requirements for power adapters are also getting higher and higher. In some special occasions, such as hospitals, communication base stations, and financial institutions, the requirements for the stability and reliability of power supply are extremely high. Once the power supply fails, it may lead to serious consequences. Traditional single power adapters cannot provide a continuous and stable power supply to the equipment in time when encountering power failure, which can easily cause equipment downtime, data loss and other problems.

[0003] To address these issues, some dual-power adapters have emerged on the market. However, existing dual-power adapters still have some shortcomings in structural design and functional implementation. For example, some dual-power adapters have slow switching speeds, resulting in brief power outages during power switching, which affects the normal operation of the equipment. Some dual-power adapters have poor heat dissipation performance, which can easily lead to overheating after prolonged use, reducing the adapter's lifespan and reliability. Furthermore, some dual-power adapters have poor compatibility, only applicable to specific types of equipment, and cannot meet diverse market demands.

[0004] Therefore, this utility model provides a dual power adapter to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a dual power adapter, which solves the aforementioned problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a dual power adapter, comprising a housing, inside which are disposed a first power input interface, a second power input interface, a power switching module, a filtering circuit, a voltage regulating circuit, and an output interface. The first power input interface and the second power input interface are electrically connected to two external power sources, respectively. The power switching module is used to switch between the two power sources. The filtering circuit is used to filter the input power. The voltage regulating circuit is used to regulate the voltage of the filtered power. The output interface is used to output stable power to the electrical device.

[0007] Preferably, the power switching module includes a first relay, a second relay, a controller, and a voltage detection circuit. The input terminal of the first relay is electrically connected to a first power input interface, and its output terminal is electrically connected to a filter circuit. The input terminal of the second relay is electrically connected to a second power input interface, and its output terminal is electrically connected to the filter circuit. The controller is electrically connected to the first relay, the second relay, and the voltage detection circuit. The voltage detection circuit detects the voltage at both the first and second power input interfaces. When the voltage detection circuit detects that the voltage at the first power input interface is normal, but the voltage at the second power input interface is abnormal, the controller controls the first relay to close and the second relay to open, allowing the first power input interface to supply power to the device. When the voltage detection circuit detects that the voltage at the second power input interface is normal, but the voltage at the first power input interface is abnormal, the controller controls the second relay to close and the first relay to open, allowing the second power input interface to supply power to the device. When the voltage detection circuit detects that the voltages at both the first and second power input interfaces are normal, the controller can select one of the power sources to supply power to the device according to preset rules. For example, it can select a power source with a higher voltage or switch between the two power sources at certain time intervals.

[0008] Preferably, the filter circuit includes a common-mode inductor, a differential-mode inductor, a capacitor, and a resistor. The two input terminals of the common-mode inductor are electrically connected to the output terminals of the first relay and the second relay, respectively, and the two output terminals are electrically connected to the input terminals of the differential-mode inductor, respectively. The output terminal of the differential-mode inductor is grounded through a filter network composed of a capacitor and a resistor. Simultaneously, the output terminal of the differential-mode inductor is also electrically connected to the input terminal of the voltage regulator circuit. The common-mode inductor is used to suppress common-mode interference, and the differential-mode inductor is used to suppress differential-mode interference. The filter network composed of the capacitor and resistor further filters noise in the power supply, thereby improving the purity of the power supply and providing a stable and reliable power supply for electrical equipment.

[0009] Preferably, the voltage regulator circuit uses a linear voltage regulator chip or a switching voltage regulator chip. Linear voltage regulator chips have advantages such as stable output voltage and low ripple, and are suitable for applications with high power supply stability requirements. Switching voltage regulator chips have advantages such as high efficiency and low power consumption, and are suitable for applications with high power supply efficiency requirements. According to different application requirements, appropriate voltage regulator chips can be selected to form a voltage regulator circuit.

[0010] Preferably, the adapter's housing is made of a material with good thermal conductivity, such as aluminum alloy, and heat dissipation fins are provided on the surface of the housing to increase the heat dissipation area and improve heat dissipation efficiency. At the same time, a cooling fan is also provided inside the adapter. By rotating the cooling fan, the air circulation is accelerated, and the temperature of the adapter is further reduced.

[0011] Preferably, the adapter is also equipped with indicator lights to indicate the working status of the power supply. For example, when the first power input interface supplies power to the device, the corresponding indicator light will light up; when the second power input interface supplies power to the device, the corresponding indicator light will light up; when the power supply malfunctions, the fault indicator light will light up so that the user can understand the working status of the power supply in a timely manner.

[0012] Beneficial effects

[0013] This invention provides a dual power adapter. Compared with the prior art, it has the following advantages:

[0014] 1. This dual power adapter, through its dual power input design and intelligent switching module, achieves millisecond-level power switching, seamlessly connecting to the backup power supply in the event of a main power failure, ensuring the continuous operation of critical equipment, and effectively avoiding losses such as data loss and equipment damage caused by power outages. It is especially suitable for scenarios with extremely high requirements for power stability, such as medical, communication, and financial industries.

[0015] 2. This dual power adapter integrates multi-stage filtering and voltage regulation circuits and a high-efficiency heat dissipation system, which significantly improves power purity and stability, while reducing operating temperature and extending the life of core components. Combined with intuitive working status indicator lights, it greatly improves ease of use and maintenance efficiency, fully meeting the high-quality power supply requirements of modern electronic devices. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a perspective view of the external structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0019] In the diagram: 1. First power input interface; 2. Second power input interface; 3. Power switching module; 4. Filtering circuit; 5. Voltage regulation circuit; 6. Output interface; 7. First relay; 8. Second relay; 9. Controller; 10. Voltage detection circuit; 11. Common mode inductor; 12. Differential mode inductor; 13. Capacitor; 14. Resistor; 15. Indicator light; 16. Housing. Detailed Implementation

[0020] It should be noted that in the description of the embodiments of this application, the terms "front," "rear," "left," "right," "up," "down," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0021] The present application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0022] Reference Figures 1 to 2 This application provides a dual power adapter, including a housing 16. Inside the housing 16 are a first power input interface 1, a second power input interface 2, a power switching module 3, a filtering circuit 4, a voltage regulator circuit 5, and an output interface 6. The first power input interface 1 and the second power input interface 2 are electrically connected to two external power sources, respectively. The power switching module 3 is used to switch between the two power sources. The filtering circuit 4 is used to filter the input power. The voltage regulator circuit 5 is used to regulate the voltage of the filtered power. The output interface 6 is used to output stable power to the power-consuming equipment.

[0023] The power switching module 3 includes a first relay 7, a second relay 8, a controller 9, and a voltage detection circuit 10. The input terminal of the first relay 7 is electrically connected to the first power input interface 1, and the output terminal is electrically connected to the filter circuit 4. The input terminal of the second relay 8 is electrically connected to the second power input interface 2, and the output terminal is electrically connected to the filter circuit 4. The controller 9 is electrically connected to the first relay 7, the second relay 8, and the voltage detection circuit 10. The voltage detection circuit 10 is used to detect the voltage of the first power input interface 1 and the second power input interface 2.

[0024] The filter circuit 4 includes a common-mode inductor 11, a differential-mode inductor 12, a capacitor 13, and a resistor 14. The two input terminals of the common-mode inductor 11 are electrically connected to the output terminals of the first relay 7 and the second relay 8, respectively, and the two output terminals are electrically connected to the input terminals of the differential-mode inductor 12, respectively. The output terminal of the differential-mode inductor 12 is grounded through a filter network composed of the capacitor 13 and the resistor 14, and the output terminal of the differential-mode inductor 12 is also electrically connected to the input terminal of the voltage regulator circuit 5.

[0025] The voltage regulator circuit 5 uses a linear voltage regulator chip or a switching voltage regulator chip; the adapter housing 16 is made of a material with good thermal conductivity, such as aluminum alloy; heat dissipation fins are provided on the surface of the housing 16 to increase the heat dissipation area and improve heat dissipation efficiency; at the same time, a cooling fan is also provided inside the adapter, and the rotation of the cooling fan accelerates the air circulation and further reduces the temperature of the adapter.

[0026] The adapter is also equipped with an indicator light 15 to indicate the power supply's operating status.

[0027] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0028] Working principle: When the voltage detection circuit 10 detects that the voltage of the first power input interface 1 is normal, but the voltage of the second power input interface 2 is abnormal, the controller 9 controls the first relay 7 to close and the second relay 8 to open, so that the first power input interface 1 supplies power to the electrical device; when the voltage detection circuit 10 detects that the voltage of the second power input interface 2 is normal, but the voltage of the first power input interface 1 is abnormal, the controller 9 controls the second relay 8 to close and the first relay 7 to open, so that the second power input interface 2 supplies power to the electrical device; when the voltage detection circuit 10 detects that the voltages of both the first power input interface 1 and the second power input interface 2 are normal, the controller 9 can select one of the power sources to supply power to the electrical device according to preset rules; the input power is filtered by the filter circuit 4 to remove noise and interference, and then regulated by the voltage regulator circuit 5 to make the output power more stable; the heat dissipation fins of the casing 16 and the internal cooling fan can effectively reduce the temperature of the adapter and improve the service life of the adapter; the indicator light 15 can intuitively display the working status of the power supply, so that users can understand the status of the power supply in a timely manner.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dual power adapter, comprising a housing (16), characterized in that: The housing (16) is internally provided with a first power input interface (1), a second power input interface (2), a power switching module (3), a filter circuit (4), a voltage regulator circuit (5), and an output interface (6). The first power input interface (1) and the second power input interface (2) are electrically connected to two external power sources, respectively. The power switching module (3) includes a first relay (7), a second relay (8), a controller (9), and a voltage detection circuit (10). The input terminal of the first relay (7) is electrically connected to the first power input interface (1), and the output terminal is electrically connected to the filter circuit (4). The input terminal of the second relay (8) is electrically connected to the second power input interface (2), and the output terminal is electrically connected to the filter circuit (4). The controller (9) is electrically connected to the second power input interface (2). The first relay (7), the second relay (8), and the voltage detection circuit (10) are electrically connected. The voltage detection circuit (10) is used to detect the voltage of the first power input interface (1) and the second power input interface (2). The filter circuit (4) includes a common-mode inductor (11), a differential-mode inductor (12), a capacitor (13), and a resistor (14). The two input terminals of the common-mode inductor (11) are electrically connected to the output terminals of the first relay (7) and the second relay (8), respectively. The two output terminals are electrically connected to the input terminals of the differential-mode inductor (12), respectively. The output terminal of the differential-mode inductor (12) is grounded through a filter network composed of the capacitor (13) and the resistor (14). At the same time, the output terminal of the differential-mode inductor (12) is also electrically connected to the input terminal of the voltage regulator circuit (5).

2. A dual power adapter according to claim 1, characterized in that: The voltage regulator circuit (5) uses a linear voltage regulator chip or a switching voltage regulator chip.

3. A dual power adapter according to claim 1, characterized in that: The adapter housing (16) is made of a material with good thermal conductivity. The surface of the housing (16) is provided with heat dissipation fins, and the interior of the housing (16) is provided with a cooling fan.

4. A dual power adapter according to claim 1, characterized in that: The adapter is equipped with an indicator light (15) to indicate the working status of the power supply.

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