Power adapter
By adjusting the voltage of the power adapter through feedback signals from an optocoupler and combining it with a fast charging chip to achieve high power output, the problem of low charging efficiency and poor compatibility of traditional power adapters is solved, thus improving charging efficiency and compatibility.
Patent Information
- Application Number
- CN202520281897.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-20
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-02-20
AI Technical Summary
Traditional power adapters have low charging efficiency and cannot dynamically adjust voltage according to different terminal devices, resulting in poor compatibility.
An optocoupler is used to feed back the signal to the PWM chip to adjust the duty cycle. Combined with a fast charging chip to support high power output, dynamic voltage matching is achieved.
It improves charging efficiency and compatibility, and can adapt to the charging needs of different terminal devices.
Smart Images
Figure CN223744420U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to charging technical field especially relates to a power adapter. BACKGROUND
[0002] In the related art, the traditional power adapter not only has low charging efficiency, but also cannot adjust the charging voltage in time according to different terminal devices, and has poor compatibility. INVENTION CONTENTS
[0003] The utility model discloses a power adapter that can dynamically adjust according to different terminal devices, improve compatibility, and also improve charging efficiency.
[0004] The utility model discloses a power adapter that can dynamically adjust according to different terminal devices, improve compatibility, and also improve charging efficiency.
[0005] The utility model discloses a power adapter, including: input module, adjustment module including feedback unit, the feedback unit includes PWM chip U1, photoelectric coupler U2B, photoelectric coupler U2A and resistance R10, the PWM chip U1 with input module electricity is connected, photoelectric coupler U2B with the PWM chip U1 electricity is connected, photoelectric coupler U2A with the first end of resistance R10 electricity is connected, photoelectric coupler U2B with photoelectric coupler U2A electricity is connected, main control module includes fast charging chip U1A, fast charging chip U1A with the second end of resistance R10 electricity is connected.
[0006] The input module includes a primary filter unit, the primary filter unit includes a bridge rectifier BD1, a capacitor EC1, an inductor L2, an inductor L1 and a capacitor EC2, the bridge rectifier BD1 is respectively connected with the first end of the capacitor EC1 and the first end of the inductor L1, the second end of the capacitor EC1 is connected with the first end of the inductor L2, the second end of the inductor L1 is connected with the first end of the capacitor EC2, and the second end of the inductor L2 is connected with the second end of the capacitor EC2.
[0007] The input module further includes a transformer unit, the transformer unit includes a transformer T1A and a chip U4, the transformer T1A is connected with the second end of the inductor L1, and the chip U4 is connected with the transformer T1A.
[0008] The transformer unit further includes a transformer T1B, a diode D1 and a resistor R1, the transformer T1B is connected with the first end of the diode D1, the second end of the diode D1 is connected with the first end of the resistor R1, and the second end of the resistor R1 is connected with the PWM chip U1.
[0009] The master control module further comprises a MOS tube Q1 and a resistor R2A, a first end of the MOS tube Q1 is electrically connected with a second end of the resistor R10, a second end of the MOS tube Q1 is electrically connected with a first end of the resistor R2A, and a second end of the resistor R2A is electrically connected with the fast charging chip U1A.
[0010] The master control module further comprises an output port, and the output port is electrically connected with the fast charging chip U1A.
[0011] The voltage conversion unit further comprises a capacitor EC3, a first end of the capacitor EC3 is electrically connected with the PWM chip U1, and a second end of the capacitor EC3 is grounded.
[0012] The voltage conversion unit further comprises a capacitor EC4, a first end of the capacitor EC4 is electrically connected with the chip U4, and a second end of the capacitor EC4 is grounded.
[0013] The input module further comprises a resistor R3 and a resistor R2, a first end of the resistor R3 is electrically connected with a second end of the inductor L1, a second end of the resistor R3 is electrically connected with a first end of the resistor R2, and a second end of the resistor R2 is electrically connected with the fast charging chip U1.
[0014] The input module further comprises a capacitor C7, a resistor R5 and a diode D2, a first end of the capacitor C7 is electrically connected with a second end of the inductor L1, a second end of the capacitor C7 is electrically connected with a first end of the resistor R5, a second end of the resistor R5 is electrically connected with a first end of the diode D2, and a second end of the diode D2 is electrically connected with the transformer T1A.
[0015] Compared with the prior art, the utility model has at least the following advantages:
[0016] Through the photoelectric coupler U2B and the photoelectric coupler U2A, the signal can be fed back to the PWM chip U1 in real time according to the plugged terminal equipment, so that the PWM chip U1 adjusts the duty cycle, thereby dynamically adjusting the voltage, and further matching different terminal equipment. In addition, the fast charging chip U1A of the application can support high power output, and can improve the charging speed of the terminal equipment. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the technical scheme of the utility model embodiment, the following will be briefly introduced to the drawing needed to be used in the embodiment.
[0018] Figure 1 It is the functional module diagram of the power adapter in the embodiment of the utility model;
[0019] Figure 2The circuit diagram of the power adapter in an embodiment of the utility model. DETAILED DESCRIPTION
[0020] Embodiments of the present application will be described in more detail with reference to the drawings. Although embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.
[0021] It should be understood that although the terms "first", "second", "third", etc. are used to describe various information in the present application, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information without departing from the scope of the present application. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.
[0022] Unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected or integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0023] The technical solutions of the embodiments of the present application will be described in detail below with reference to the drawings.
[0024] Please refer to Figure 1 and Figure 2 A power adapter, comprising: an input module 100, an adjustment module 200 and a master control module 300, the adjustment module 200 comprises a feedback unit, the feedback unit comprises a PWM chip U1, an optoelectronic coupler U2B, an optoelectronic coupler U2A and a resistor R10, the PWM chip U1 is electrically connected with the input module, the optoelectronic coupler U2B is electrically connected with the PWM chip U1, the optoelectronic coupler U2A is electrically connected with the first end of the resistor R10, and the optoelectronic coupler U2B is electrically connected with the optoelectronic coupler U2A; the master control module 300 comprises a fast charging chip U1A, and the fast charging chip U1A is electrically connected with the second end of the resistor R10.
[0025] It should be noted that the optoelectronic coupler U2A and the optoelectronic coupler U2B are one optoelectronic coupler, and through the arrangement of the optoelectronic coupler U2B and the optoelectronic coupler U2A, a signal can be fed back to the PWM chip U1 in real time according to the plugged terminal equipment, so that the PWM chip U1 adjusts the duty ratio, thereby dynamically adjusting the voltage and matching different terminal equipment. In addition, the fast charging chip U1A of the application can support high power output, integrate the PD / QC fast charging protocol, and improve the charging speed of the terminal equipment.
[0026] Please refer to Figure 1 In an embodiment, the input module 100 comprises a primary filter unit, the primary filter unit comprising a bridge rectifier BD1, a capacitor EC1, an inductor L2, an inductor L1 and a capacitor EC2, the bridge rectifier BD1 being electrically connected to a first end of the capacitor EC1 and a first end of the inductor L1 respectively, a second end of the capacitor EC1 being electrically connected to a first end of the inductor L2, a second end of the inductor L1 being electrically connected to a first end of the capacitor EC2, and a second end of the inductor L2 being electrically connected to a second end of the capacitor EC2.
[0027] It should be noted that the bridge rectifier BD1 is used to convert alternating current into direct current, and the capacitor EC1, the inductor L2, the inductor L1 and the capacitor EC2 constitute a filter circuit.
[0028] Please refer to Figure 2 In an embodiment, the input module 100 further comprises a voltage transformation unit, the voltage transformation unit comprising a transformer T1A and a chip U4, the transformer T1A being electrically connected to the second end of the inductor L1, and the chip U4 being electrically connected to the transformer T1A. Specifically, the voltage transformation unit further comprises a transformer T1B, a diode D1 and a resistor R1, the transformer T1B being electrically connected to a first end of the diode D1, a second end of the diode D1 being electrically connected to a first end of the resistor R1, and a second end of the resistor R1 being electrically connected to the PWM chip U1.
[0029] It should be noted that the transformer T1A and the transformer T1B are the same transformer. The diode D1 is used for protecting the circuit, and the resistor R1 is a current-limiting resistor.
[0030] Please refer to Figure 2 In an embodiment, the main control module 300 further comprises a MOS tube Q1 and a resistor R2A, a first end of the MOS tube Q1 being electrically connected to a second end of the resistor R10, a second end of the MOS tube Q1 being electrically connected to a first end of the resistor R2A, and a second end of the resistor R2A being electrically connected to the fast charging chip U1A.
[0031] It should be noted that the resistor R2A is a voltage dividing resistor.
[0032] Please refer to Figure 2In an embodiment, the master module 300 further comprises an output port, which is electrically connected with the fast charging chip U1A.
[0033] It should be noted that the output port is a TYPE-C interface.
[0034] Please refer to Figure 2 In an embodiment, the voltage conversion unit further comprises a capacitor EC3, a first end of the capacitor EC3 is electrically connected with the PWM chip U1, and a second end of the capacitor EC3 is grounded.
[0035] It should be noted that the capacitor EC3 is a filter capacitor.
[0036] Please refer to Figure 2 In an embodiment, the voltage conversion unit further comprises a capacitor EC4, a first end of the capacitor EC4 is electrically connected with the chip U4, and a second end of the capacitor EC4 is grounded.
[0037] It should be noted that the capacitor EC4 is a filter capacitor.
[0038] Please refer to Figure 2 In an embodiment, the input module 100 further comprises a resistor R3 and a resistor R2, a first end of the resistor R3 is electrically connected with a second end of the inductor L1, a second end of the resistor R3 is electrically connected with a first end of the resistor R2, and a second end of the resistor R2 is electrically connected with the fast charging chip U1.
[0039] It should be noted that the resistor R3 and the resistor R2 are current limiting resistors for protecting the circuit.
[0040] Please refer to Figure 2 In an embodiment, the input module 100 further comprises a capacitor C7, a resistor R5 and a diode D2, a first end of the capacitor C7 is electrically connected with a second end of the inductor L1, a second end of the capacitor C7 is electrically connected with a first end of the resistor R5, a second end of the resistor R5 is electrically connected with a first end of the diode D2, and a second end of the diode D2 is electrically connected with the transformer T1A.
[0041] It should be noted that the diode D2 prevents reverse voltage or back surge voltage in the circuit from damaging other elements, the capacitor C7 is a filter capacitor, and the resistor R5 is a current limiting resistor.
[0042] The circuit principle of the present application is described as follows:
[0043] An external power supply inputs an alternating voltage of 100 to 240V, which is rectified into a direct current voltage by the bridge rectifier BD1, and then filtered by the primary filter unit into a direct current voltage of 150 to 300V,
[0044] Then the PWM chip U1 controls the 4th and 5th pins of the transformer T1A to generate high-frequency pulses, while driving the 1st and 2nd pins of the transformer T1B to induce low-voltage alternating current, which is rectified by the diode D1 into direct current voltage and filtered by the capacitor EC3 to output. Then the 7th and 8th pins of the transformer T1A generate low-voltage alternating current, which is rectified by the chip U4 and filtered by the capacitor EC4 to output smooth low-voltage direct current to the fast charging chip U1A and the MOS tube Q1.
[0045] The fast charging chip U1A integrates the PD / QC fast charging protocol, which can provide high power to charge the terminal device when the output port is connected to the terminal device for charging.
[0046] The scheme of the present application has been described in detail above with reference to the drawings. In the above embodiments, the description of each embodiment is focused on, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments. It should also be known by those skilled in the art that the actions and modules involved in the specification are not necessarily required by the present application. In addition, it can be understood that the steps in the method of the embodiments of the present application can be adjusted, combined and reduced in sequence according to actual needs, and the modules in the device of the embodiments of the present application can be combined, divided and reduced according to actual needs.
[0047] The above has described various embodiments of the present application, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments. The choice of terms used herein is intended to best explain the principles, practical application or improvement of technology in the market of the embodiments, or to enable other ordinary skilled in the art to understand the embodiments disclosed herein.
Claims
1. A power adapter, characterized by, The utility model relates to a kind of fast charging device, including: Input module; Adjustment module, including feedback unit, the feedback unit includes PWM chip U1, photoelectric coupler U2B, photoelectric coupler U2A and resistance R10, the PWM chip U1 is electrically connected with the input module, the photoelectric coupler U2B is electrically connected with the PWM chip U1, the photoelectric coupler U2A is electrically connected with the first end of resistance R10, the photoelectric coupler U2B is electrically connected with the photoelectric coupler U2A; Master module, including fast charging chip U1A, the fast charging chip U1A is electrically connected with the second end of resistance R10.
2. The power adapter of claim 1, wherein, The input module includes a primary filter unit, the primary filter unit includes a bridge rectifier BD1, a capacitor EC1, an inductor L2, an inductor L1 and a capacitor EC2, the bridge rectifier BD1 is electrically connected with the first end of the capacitor EC1 and the first end of the inductor L1 respectively, the second end of the capacitor EC1 is electrically connected with the first end of the inductor L2, the second end of the inductor L1 is electrically connected with the first end of the capacitor EC2, the second end of the inductor L2 is electrically connected with the second end of the capacitor EC2.
3. The power adapter of claim 2, wherein, The input module further includes a transformer unit, the transformer unit includes a transformer T1A and a chip U4, the transformer T1A is electrically connected with the second end of the inductor L1, and the chip U4 is electrically connected with the transformer T1A.
4. The power adapter of claim 3, wherein, The transformer unit further includes a transformer T1B, a diode D1 and a resistor R1, the transformer T1B is electrically connected with the first end of the diode D1, the second end of the diode D1 is electrically connected with the first end of the resistor R1, and the second end of the resistor R1 is electrically connected with the PWM chip U1.
5. The power adapter of claim 1, wherein, The master module further includes a MOS tube Q1 and a resistor R2A, the first end of the MOS tube Q1 is electrically connected with the second end of the resistance R10, the second end of the MOS tube Q1 is electrically connected with the first end of the resistor R2A, and the second end of the resistor R2A is electrically connected with the fast charging chip U1A.
6. The power adapter of claim 5, wherein, The master module further includes an output port, and the output port is electrically connected with the fast charging chip U1A.
7. The power adapter of claim 3, wherein, The transformer unit further includes a capacitor EC3, the first end of the capacitor EC3 is electrically connected with the PWM chip U1, and the second end of the capacitor EC3 is grounded.
8. The power adapter of claim 3, wherein, The transformer unit further includes a capacitor EC4, the first end of the capacitor EC4 is electrically connected with the chip U4, and the second end of the capacitor EC4 is grounded.
9. The power adapter of claim 2, wherein, The input module further includes a resistor R3 and a resistor R2, the first end of the resistor R3 is electrically connected with the second end of the inductor L1, the second end of the resistor R3 is electrically connected with the first end of the resistor R2, and the second end of the resistor R2 is electrically connected with the fast charging chip U1.
10. The power adapter of claim 9, wherein, The input module further comprises a capacitor C7, a resistor R5 and a diode D2, a first end of the capacitor C7 is electrically connected with the second end of the inductor L1, a second end of the capacitor C7 is electrically connected with a first end of the resistor R5, a second end of the resistor R5 is electrically connected with a first end of the diode D2, and a second end of the diode D2 is electrically connected with the transformer T1A.