Charger with zero standby power consumption
Through the combined design of PWM control module and auxiliary components, the charger automatically switches to low-energy mode when the device is not connected, solving the standby power consumption problem, realizing zero-power standby and intelligent management, and extending the service life.
Patent Information
- Application Number
- CN202422240657.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-12
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-09-12
AI Technical Summary
Existing chargers still have high standby power consumption when they are not connected to the device or are fully charged, and lack effective load detection mechanisms and intelligent power management, resulting in waste of energy and poor user experience.
The combination design of PWM control module, auxiliary components, switch module, interface module and protocol module is adopted to realize load detection and intelligent power management, automatically switch to low-energy mode, and use the energy stored in the power supply module to maintain the basic operations of the control module and protocol module.
It realizes zero power consumption standby time when the charger is not connected to external devices, reduces power consumption, extends service life, and improves energy transmission efficiency through intelligent management.
Smart Images
Figure CN223156740U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of chargers, in particular to a charger with zero standby power consumption. Background Art
[0002] With the advent of the digital age, electronic devices such as smart phones, tablets, laptops, etc. have become an indispensable part of modern life. These devices usually need to be replenished with power through a charger to ensure their normal operation. However, in actual use, most chargers will still consume a certain amount of power even when not connected to a device or the device is fully charged, which is called standby power consumption.
[0003] Although the standby power consumption is small, due to the large number of chargers and their long-term plugged-in state, the overall energy consumption cannot be ignored. According to the standard IEC62301 formulated by the International Electrotechnical Commission (IEC), when the standby power consumption of a device is below 5 milliwatts (mW), it can be considered to achieve the "zero standby" state. Although the existing technology has enabled many chargers to reduce the standby power consumption to a relatively low level, there is still a long way to reach true zero-power standby.
[0004] Developing a truly zero standby power charger has become the current research focus. Such chargers can not only reduce unnecessary energy waste but also improve the user experience.
[0005] Although the chargers on the current market have significantly improved in conversion efficiency, there is still a high energy loss in the standby state. This is mainly because the traditional charger design lacks an effective load detection mechanism and an intelligent power management scheme. Therefore, it is of great practical significance and technical value to develop a charger that can automatically enter the deep sleep mode when there is no load or after full charge, so as to achieve the goal of near-zero standby power consumption. Summary of the Utility Model
[0006] The purpose of the utility model is to provide a charger with zero standby power consumption to solve the problems raised in the above background art.
[0007] The technical solution of the utility model is: a charger with zero standby power consumption, comprising:
[0008] A PWM control module, used to adjust the output power according to the state of the switch module;
[0009] An auxiliary component, used to adjust the energy according to the output state of the PWM control module;
[0010] A switch module, used to interact with an external device through a protocol module and adjust the operating state of the PWM control module according to the charging state of the external device;
[0011] An interface module for electrically connecting to external devices and a switch module.
[0012] Furthermore, the PWM control module is electrically connected to the auxiliary components through a feedback loop module;
[0013] The PWM control module is electrically connected to port 3 of transformer TIA through the collector of transistor Q7. Port 2 of transformer TIA is connected to an external power supply. Port A of transformer TIA is connected to the auxiliary components and the feedback loop module through diode D1. Port B of transformer TIA is grounded, and port A of transformer TIA is electrically connected to port B of transformer TIA through capacitor C2. At the same time, the PWM control module is grounded through the emitter of transistor Q7.
[0014] Furthermore, the auxiliary components include:
[0015] A voltage-stabilizing charging module M1 electrically connected to the external power supply for stabilizing the output of the external power supply;
[0016] A power supply module M2 electrically connected to the voltage-stabilizing charging module M1 for storing electrical energy and powering the control module M3 and the protocol module;
[0017] A control module M3 for obtaining the charging state of the external device and adjusting the operating state of the switch module according to the charging state of the external device.
[0018] Furthermore, the voltage-stabilizing charging module M1 includes a transistor Q1. The collector of transistor Q1 is connected to the external power supply. The emitter of transistor Q1 is connected to the power supply module M2 through a resistor R2. Resistor R2 is connected to the control module M3. The base of transistor Q1 is connected to the collector of transistor Q1 through a resistor R1. At the same time, the base of transistor Q1 is grounded through a diode ZD1.
[0019] Furthermore, the power supply module M2 includes, but is not limited to, capacitors and batteries.
[0020] Furthermore, the protocol module is electrically connected to the auxiliary components and the switch module through a DC-DC module. At the same time, the DC-DC module is connected to the interface module through a transistor.
[0021] Furthermore, the switch module includes transistors Q2, Q3, and Q4;
[0022] The base of the transistor Q2 is electrically connected to the control module M3, the emitter of the transistor Q2 is electrically connected to the regulated charging module M1, the collector of the transistor Q2 is electrically connected to the DC-DC module, the DC-DC module is electrically connected to the protocol module, and the protocol module is electrically connected to the interface module;
[0023] The emitters of the transistor Q3 and the transistor Q4 are both electrically connected to the resistor R2 and the control module M3. At the same time, the bases of the transistor Q3 and the transistor Q4 are both electrically connected to the control module M3, and the collectors of the transistor Q3 and the transistor Q4 are both electrically connected to the protocol module and the DC-DC module.
[0024] The present utility model provides a charger with zero standby power consumption by means of improvement. Compared with the prior art, it has the following improvements and advantages:
[0025] First: Through the design of the auxiliary components, the charger of the present utility model can automatically switch to the low-power consumption mode when not connected to an external device, and at the same time, utilize the energy stored in the power supply module to maintain the basic operations of the control module and the protocol module, thereby realizing zero-power standby of the charger;
[0026] Second: When the charger of the present utility model is in the standby state, the main power supply path can be cut off through the control module, so that it can only rely on the power supply module to supply power to the control module and the protocol module, thereby effectively reducing the power consumption in the standby state and contributing to energy conservation and emission reduction;
[0027] Third: Since the present utility model avoids unnecessary energy loss in the standby state and reduces the thermal load of the internal components of the circuit, it helps to extend the service life of the charger;
[0028] Fourth: The present utility model monitors the connection state between the interface module and the external device through the protocol module and feeds back the signal to the control module, thereby controlling the start and stop of the PWM control module, and further realizing intelligent management and efficient energy transmission. Description of the Drawings
[0029] The following further explains the present utility model in conjunction with the drawings and embodiments:
[0030] Figure 1 is the circuit diagram of the charger with zero standby power consumption of the present utility model. Detailed Embodiment
[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.
[0032] It should be noted that in the description of the present invention, the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.
[0033] In addition, it should be understood that for the convenience of description, the sizes of the various components shown in the drawings are not drawn according to the actual proportional relationship. For example, the thickness or width of some layers may be exaggerated relative to other layers.
[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined or described in one drawing, it will not be necessary to further discuss and describe it specifically in the description of the subsequent drawings.
[0035] Referring to Figure 1 , this embodiment provides a charger with zero standby power consumption. The charger includes a PWM control module, an auxiliary component, a switch module, an interface module, a protocol module, a feedback loop module, and a DC-DC module. When the charger in this embodiment is connected to an external power supply, the PWM control module, the feedback loop module, the DC-DC module, and the protocol module work together to achieve stable output. When the charger in this embodiment is not connected to an external power supply, that is, the interface module is not electrically connected to an external device, the protocol module confirms this unconnected state and feeds it back to the auxiliary component, that is, power is supplied through the auxiliary component, thereby avoiding unnecessary energy consumption of the DC-DC module and the protocol module in the standby state. It should be noted that when the interface module is electrically connected to an external device, the protocol module provides a signal and the PWM control module operates, thereby avoiding the energy backflow of the DC-DC module to the auxiliary component. That is to say, the charger in this embodiment can achieve zero-power standby, save energy, and at the same time can extend the service life of the charger.
[0036] In this embodiment, there is at least one switch module, interface module, and DC-DC module, and the interface module and the DC-DC module are arranged in one-to-one correspondence. Further, the auxiliary components include a voltage stabilization charging module M1, a power supply module M2, and a control module M3. Among them, the voltage stabilization charging module M1 is electrically connected to an external power supply, and is used to obtain electrical energy from the external power supply and convert it into a form suitable for charging the power supply module M2. The power supply module M2 is electrically connected to the voltage stabilization charging module M1, and as an energy storage unit, it can store electrical energy when the charger is not connected to any external device. That is, when the charger enters the standby state, the power supply module M2 provides energy for the control module M3 and the protocol module to maintain its basic operation and avoid continuously drawing power from the external power supply. It should be noted that the power supply module M2 includes, but is not limited to, capacitors and batteries.
[0037] Further, the control module M3 monitors the charging state of the charger and determines the overall operating mode of the charger in this embodiment according to whether an external device is connected for charging. That is to say, when it is detected that the interface module is not connected to an external device, the control module M3 enables the power supply module M2 to supply power to the control module M3 and the protocol module through the switch module. Conversely, when it is detected that the interface module is connected to an external device, the control module enables the normal charging state in this embodiment through the switch module, that is, to supply power to the external device through the external power supply.
[0038] Specifically, the external power supply is electrically connected to the 2-port of the transformer TIA through a rectifier bridge F1 and a capacitor C1. The 3-port of the transformer TIA is electrically connected to the collector of the transistor Q7. The emitter of the transistor Q7 is grounded. The base of the transistor Q7 is electrically connected to the PWM control module. One end of the PWM control module is grounded, and the other end of the PWM control module is electrically connected to the cathode of the diode D1 and the control module M3 through a feedback loop module.
[0039] The A-port of the transformer TIA is electrically connected to the anode of the diode D1. The cathode of the diode D1 is electrically connected to the capacitor C2, the voltage stabilization charging module M1, and the emitter of the transistor Q2. Among them, the capacitor C2 is electrically connected to the B-port of the transformer TIA, and at the same time, the B-port of the transformer TIA and the capacitor C2 are both grounded. Further, the voltage stabilization charging module M1 includes a transistor Q1. The collector of the transistor Q1 is electrically connected to the external power supply. The emitter of the transistor Q1 is electrically connected to the power supply module M2 through a resistor R2. The resistor R2 is electrically connected to the control module M3. The base of the transistor Q1 is electrically connected to the collector of the transistor Q1 through a resistor R1. At the same time, the base of the transistor Q1 is grounded through a diode ZD1.
[0040] Specifically, in this embodiment, the switch module includes transistors Q2, Q3, and Q4. There are two interface modules and two DC-DC modules. That is, in this embodiment, the DC-DC modules are DC-DC module 1 and DC-DC module 2, and the interface modules are output interface 1 and output interface 2. Since the protocol module is used to monitor the connection status between the interface module and external devices, there are also two protocol modules in this embodiment, namely protocol module M4 and protocol module M5.
[0041] That is to say, the collector of transistor Q2 is electrically connected to DC-DC module 1 and DC-DC module 2. DC-DC module 1 is electrically connected to protocol module M5 and the collector of transistor Q6. The emitter of transistor Q6 is electrically connected to output interface 1. At the same time, the base of transistor Q6 and output interface 1 are both electrically connected to protocol module M5. Protocol module M5 is electrically connected to protocol module M4 and the collector of transistor Q3. Further, DC-DC module 2 is electrically connected to protocol module M4 and the collector of transistor Q5. The emitter of transistor Q5 is electrically connected to output interface 2. At the same time, the base of transistor Q5 and output interface 2 are both electrically connected to protocol module M4. Protocol module M4 is electrically connected to the collector of transistor Q4 and protocol module M4 is grounded. At the same time, the emitter of transistor Q4 is electrically connected to resistor R2, the emitter of transistor Q3, and control module M3, and control module M3 is grounded.
[0042] Specifically, the working process of the charger in this embodiment can be divided into standby operation and charging operation. Further, the standby operation of the charger in this embodiment is as follows:
[0043] When output interface 1 or output interface 2 is not electrically connected to an external device, the charger in this embodiment is in the standby state. That is, the protocol module sends the standby state signal to the feedback loop module through control module M3 to control the PWM control module to enter the intermittent sleep state. At this time, the energy of capacitor C2 is not enough to supply power to DC-DC module 1, DC-DC module 2, protocol module M4, and protocol module M5. That is to say, at this time, power supply module M2 will supply power to DC-DC module 1, DC-DC module 2, protocol module M4, and protocol module M5. That is, control module M3 sends an execution command to make transistor Q2 turn off and transistors Q3 and Q4 turn on, so that DC-DC module 1, DC-DC module 2, protocol module M4, and protocol module M5 are supplied with energy by power supply module M2.
[0044] Further, the charging operation of the charger in this embodiment is as follows:
[0045] When the output interface 1 or the output interface 2 is electrically connected to an external device, the charger in this embodiment is in a working state. That is, the protocol module sends the working state signal to the feedback loop module through the control module M3 to control the activation of the PWM control module and make it exit the intermittent sleep state. At this time, the control module M3 sends an execution command to make the transistor Q2 closed, that is, the capacitor C2 supplies power to the DC-DC module 1, the DC-DC module 2, the protocol module M4, and the protocol module M5. At the same time, the transistor Q3 and the transistor Q4 are turned off, so as to avoid the energy backflow of the DC-DC module 1 and the DC-DC module 2 to the power supply module M2, causing it to malfunction. It should be noted that the capacitor C2 can be supplied power to the power supply module M2 by the regulated charging module M1 through the current limiting of the resistor R2.
[0046] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A charger with zero standby power consumption, characterized in that, It includes: A PWM control module for adjusting the output power according to the state of the switching module; An auxiliary component for adjusting the energy according to the output state of the PWM control module; A switching module for interacting with an external device through a protocol module and adjusting the operating state of the PWM control module according to the charging state of the external device; An interface module for electrically connecting to the external device and the switching module; The PWM control module is electrically connected to the auxiliary component through a feedback loop module; The PWM control module is electrically connected to port 3 of transformer TIA through the collector of transistor Q7. Port 2 of transformer TIA is electrically connected to an external power supply. Port A of transformer TIA is electrically connected to the auxiliary component and the feedback loop module through diode D1. Port B of transformer TIA is grounded, and port A of transformer TIA is electrically connected to port B of transformer TIA through capacitor C2. At the same time, the PWM control module is grounded through the emitter of transistor Q7; The auxiliary component includes: A regulated charging module M1 electrically connected to the external power supply for regulating the output of the external power supply; A power supply module M2 electrically connected to the regulated charging module M1 for storing electrical energy and supplying power to the control module M3 and the protocol module; A control module M3 for obtaining the charging state of the external device and adjusting the operating state of the switching module according to the charging state of the external device; The regulated charging module M1 includes transistor Q1. The collector of transistor Q1 is electrically connected to the external power supply. The emitter of transistor Q1 is electrically connected to the power supply module M2 through resistor R2. Resistor R2 is electrically connected to the control module M3. The base of transistor Q1 is electrically connected to the collector of transistor Q1 through resistor R1. At the same time, the base of transistor Q1 is grounded through diode ZD1.
2. The charger with zero standby power consumption according to claim 1, wherein The power supply module M2 includes, but is not limited to, capacitors and batteries.
3. The charger with zero standby power consumption according to claim 1, characterized in that, The protocol module is electrically connected to the auxiliary component and the switching module through a DC-DC module. At the same time, the DC-DC module is electrically connected to the interface module through a transistor.
4. A charger with zero standby power consumption according to claim 1 or 3, characterized in that, The switching module includes transistor Q2, transistor Q3, and transistor Q4; The base of transistor Q2 is electrically connected to the control module M3. The emitter of transistor Q2 is electrically connected to the regulated charging module M1. The collector of transistor Q2 is electrically connected to the DC-DC module. The DC-DC module is electrically connected to the protocol module. The protocol module is electrically connected to the interface module; The emitters of transistor Q3 and transistor Q4 are both electrically connected to resistor R2 and the control module M3. At the same time, the bases of transistor Q3 and transistor Q4 are both electrically connected to the control module M3. The collectors of transistor Q3 and transistor Q4 are both electrically connected to the protocol module and the DC-DC module.