Self-adaptive power adapter and adjusting method thereof

Abstract

A self-adaptive power adapter is characterized in that an input module converts received alternating current into direct current with stable voltage, and a main control module generates a first control signal which is in a first proportional relation with target charging voltage and a second control signal which is in a second proportional relation with target charging current according to a charging request sent by a charging interface; the multi-mode conversion module is driven to dynamically convert in a step-up or step-down mode based on the first control signal, the input voltage is converted into the output voltage matched with the target charging voltage, and the second control signal can drive the output adjusting module to adjust the output current into the output current matched with the target charging circuit. Determining that the output voltage and the output current are matched with the charging demand of the to-be-charged equipment; furthermore, the second control signal is dynamically optimized in combination with the target charging current upper limit of the to-be-charged equipment, so that overload or thermal runaway is prevented, and high efficiency, safety and reliability of the charging process are ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of power supply, and in particular relates to an adaptive power adapter and a regulating method thereof. Background Art

[0002] In practical applications, electronic devices usually need to be charged through a power adapter. Specifically, during the charging process, the electronic device can be connected to the power adapter through a charging interface, the power adapter can be connected to an external power source, the power adapter can perform voltage reduction and other processing on the charging power output by the external power source, and output the processed charging power to the electronic device through the charging interface to charge the electronic device.

[0003] However, there are many adapters with different output powers on the market. Since different electronic devices have different requirements for charging power, how to reasonably control the charging power output by the adapter according to the requirements of the electronic devices and ensure the efficiency, safety and reliability of the charging process has become a technical problem that needs to be solved urgently. Summary of the invention

[0004] In view of this, an embodiment of the present invention provides an adaptive power adapter and an adjustment method thereof, aiming to provide a power adapter that can adaptively adjust and accurately control the output power to meet the charging power requirements of different electronic devices while ensuring the efficiency, safety and reliability of the charging process.

[0005] A first aspect of an embodiment of the present invention provides an adaptive power adapter, comprising: an input module, a main control module, a multi-mode conversion module, an output regulation module and a charging interface; the input module is used to receive alternating current and convert the alternating current into direct current with a stable input voltage; the main control module is used to receive a charging request sent by a device to be charged through the charging interface, and generate a first control signal in a first proportional relationship with a target charging voltage according to the charging request, the first control signal is used to control the multi-mode conversion module to dynamically convert in a boost or buck mode; a second control signal in a second proportional relationship with a target charging current is generated according to the charging request, and the second control signal is dynamically optimized in combination with the target charging current upper limit of the device to be charged; a first control signal is sent to the multi-mode conversion module, and a second control signal is sent to the output regulation module; the multi-mode conversion module is connected to the input module and the main control module, and is used to convert the input voltage into an output voltage matching the target charging voltage according to the first control signal; the output regulation module is connected to the main control module, and is used to adjust the input current to an output current matching the target charging current according to the second control signal; the charging interface is used to transmit the output voltage and the output current to the device to be charged.

[0006] In one embodiment, the input module includes an AC-DC converter.

[0007] In one embodiment, the main control module is used to receive a charging request sent by a device to be charged through a charging interface, parse the target charging parameters carried in the charging request, extract the target charging voltage and the target charging current; generate a first control signal according to the target charging voltage, and generate a second control signal according to the target charging current.

[0008] In one embodiment, the multi-mode conversion module includes a mode selection circuit and a voltage conversion circuit; The mode selection circuit is connected to the main control module and is used to dynamically select and activate a voltage conversion circuit suitable for a target charging voltage according to a first control signal; the voltage conversion circuit is used to convert the output voltage to obtain the target charging voltage.

[0009] In one embodiment, the first control signal is expressed as: ;in, is the first proportionality coefficient, which is an integer greater than or equal to 1. is the target charging voltage, is the input voltage.

[0010] In one embodiment, the voltage conversion circuit includes a boost conversion circuit and a buck conversion circuit.

[0011] In one embodiment, the output regulation module includes a transistor and a driving circuit, the control end of the transistor is connected to the main control module through the driving circuit, and the driving circuit receives the second control signal and adjusts the bias current of the transistor to adjust the output current to the target charging current.

[0012] In one embodiment, the power adapter further includes a protection module for monitoring the operating status of the power adapter and stopping outputting the charging voltage in an abnormal situation to protect the power adapter and the device to be charged.

[0013] In one embodiment, the power adapter further includes an identification module, which is connected to the main control module and is used to support multiple smart charging protocols.

[0014] The second aspect of the embodiment of the present application further provides a method for adjusting an adaptive power adapter, which is applied to the adaptive adjusting power adapter of the first aspect above, and the method comprises: receiving a charging request sent by a device to be charged through a charging interface, generating a first control signal in a first proportional relationship with a target charging voltage according to the charging request, and driving the multi-mode conversion module to dynamically convert between a boost mode and a buck mode; generating a second control signal in a second proportional relationship with a target charging current according to the charging request; and dynamically optimizing the second control signal in combination with a target charging current upper limit of the device to be charged; A first control signal is sent to the multi-mode conversion module, and a second control signal is sent to the output regulation module, so that the multi-mode conversion module converts the stable voltage into an output voltage matching the target charging voltage according to the first control signal, and the output regulation module adjusts the output current into an output current matching the target charging current according to the second control signal; wherein the stable voltage is the voltage at which the input module converts the received alternating current into direct current, and the output voltage and the output current are transmitted to the device to be charged by the charging interface.

[0015] The beneficial effects of the embodiments of the present application are as follows: the input module converts the received alternating current into direct current with a stable voltage, and the main control module generates a first control signal in a first proportional relationship with the target charging voltage and a second control signal in a second proportional relationship with the target charging current according to the charging request sent by the charging interface, and the first control signal can drive the multi-mode conversion module to dynamically convert in a boost or buck mode to convert the input voltage into an output voltage matching the target charging voltage, and the second control signal can drive the output regulation module to adjust the output current to an output current matching the target charging current, so as to ensure that the output voltage and the output current match the charging requirements of the device to be charged; further, by combining the target charging current upper limit of the device to be charged, the second control signal is dynamically optimized to prevent overload or thermal runaway, so as to ensure the efficiency, safety and reliability of the charging process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 A schematic block diagram of an adaptive power adapter provided in accordance with an embodiment of the present invention; Figure 2 A schematic block diagram of a multi-mode conversion module provided in an embodiment of the present application; Figure 3 A schematic block diagram of an output regulation module provided in an embodiment of the present application; Figure 4 A schematic block diagram of an adaptive power adapter provided in another embodiment of the present application; Figure 5 A schematic diagram of a flow chart of a method for adjusting an adaptive power adapter provided in an embodiment of the present application. DETAILED DESCRIPTION

[0018] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0020] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0021] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0022] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0023] In the description of the embodiments of the present application, the term "multi-frame" refers to more than two (including two).

[0024] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0025] An embodiment of the present invention provides an adaptive power adapter, which can adaptively adjust and accurately control output power according to the requirements of different electronic devices for charging power.

[0026] See also Figure 1 As shown, Figure 1 A schematic block diagram of an adaptive power adapter provided in an embodiment of the present application. Figure 1 It can be known that the adaptive power adapter provided in the embodiment of the present application includes: an input module 100, a main control module 200, a multi-mode conversion module 300, an output regulation module 400 and a charging interface 500.

[0027] The input module 100 is used to receive alternating current and convert the alternating current into direct current with a stable voltage. The main control module 200 is used to receive a charging request sent by the device to be charged through the charging interface 500, and generate a first control signal in a first proportional relationship with the target charging voltage according to the charging request, and control the multi-mode conversion module 300 to dynamically convert in a boost or buck mode through the first control signal; the main control module 200 is also used to generate a second control signal in a second proportional relationship with the target charging current according to the charging request, and dynamically optimize the second control signal in combination with the target charging current upper limit of the device to be charged; send a first control signal to the multi-mode conversion module 300, and send a second control signal to the output regulation module 400; the multi-mode conversion module 300 is connected to the input module 100 and the main control module 200, and is used to convert the stable voltage into an output voltage matching the target charging voltage according to the first control signal; the output regulation module 400 is connected to the main control module 200, and is used to adjust the output current to an output current matching the target charging current according to the second control signal; the charging interface 500 is used to transmit the output voltage and the output current to the device to be charged.

[0028] In this embodiment, the multi-mode conversion module 300 and the output regulation module 400 respectively regulate the output voltage and the output current according to the target charging voltage and the target charging current, so as to ensure that the output charging voltage and the charging current meet the charging requirements of the device to be charged. The main control module 200 is set to generate a first control signal according to the charging request, and the multi-mode conversion module 300 is controlled to dynamically switch between the boost mode or the buck mode according to the target charging voltage, so as to improve the adaptability of the power adapter to a wide range of voltages and ensure the efficient charging process. The main control module 200 is combined with the target charging current upper limit of the device to be charged to dynamically optimize the second control signal to ensure that the output regulation module 400 regulates the output current to solve the overload or thermal runaway problems that may exist in the charging process, so as to ensure the safety and reliability of the charging process.

[0029] In a specific application, the input module 100 includes an AC-DC converter. The AC-DC converter converts the alternating current into a direct current of a stable power source to ensure that a signal with a stable voltage is provided for subsequent module processing. Specifically, the embodiments of the present application do not impose any limitation on the AC-DC converter. In one embodiment, the main control module 200 is used to receive a charging request sent by the device to be charged through the charging interface 500, parse the target charging parameters carried in the charging request, extract the target charging voltage and the target charging current; generate a first control signal according to the target charging voltage, and generate a second control signal according to the target charging current.

[0030] Specifically, the charging request includes a target charging voltage and a target charging current.

[0031] Exemplarily, the first control signal may be expressed as: ;in, is the first proportionality coefficient, which is an integer greater than or equal to 1. Preferably, when the difference between the input voltage and the target charging voltage is small, The value of is 1, that is, the first control signal can be obtained by calculating the ratio of the input voltage to the target charging voltage, which is expressed as: / ,in, is the target charging voltage, is the input voltage. When the difference between the input voltage and the target charging voltage is large, Take an integer greater than 1 to improve the efficiency of voltage regulation. For example, if the input voltage is low ( Less than ),Right now Greater than 1, it means that boost is needed; if the input voltage is high ( Greater than ),Right now Less than 1 indicates that the pressure needs to be reduced.

[0032] The main control module 200 sends the first control signal to the multi-mode conversion module 300, and the multi-mode conversion module 300 selects an appropriate voltage conversion mode according to the first control signal, and adjusts the duty cycle of the switch element in the voltage conversion circuit based on the first control signal. The duty cycle is the proportion of the time that the switch element (such as MOSFET) is turned on to the entire cycle. By adjusting the duty cycle of the switch element, the output voltage can be controlled and the input voltage can be converted into a target charging voltage.

[0033] In one embodiment, see Figure 2 As shown, Figure 2 A schematic block diagram of a multi-mode conversion module provided in an embodiment of the present application. Figure 2It can be seen that the multi-mode conversion module 300 includes a mode selection unit 301 and a voltage conversion circuit 302; wherein the mode selection unit 301 is connected to the main control module 200, and is used to dynamically select and activate the voltage conversion circuit 302 suitable for the target charging voltage according to the first control signal; the voltage conversion circuit 302 includes a boost circuit and a buck circuit, which are used to convert the output voltage to obtain the target charging voltage.

[0034] Wherein, when the first control signal is greater than 1, the mode selection unit 301 triggers the boost circuit to work, and at this time, the duty cycle of the switch element in the boost circuit will increase, so as to increase the output voltage to the target voltage; when the first control signal is less than 1, the mode selection unit 301 triggers the buck circuit to work, and at this time, the duty cycle of the switch element in the buck circuit will decrease, so as to reduce the output voltage to the target voltage. For example, in the boost circuit, the duty cycle of the switch element is expressed as: D=1- ; In the step-down circuit, the duty cycle of the switching element is expressed as: D = .

[0035] Exemplarily, the voltage boost circuit and the voltage buck circuit are DC-DC converters.

[0036] In one embodiment, see Figure 3 As shown, Figure 3 A schematic block diagram of an output regulation module provided in an embodiment of the present application. Figure 3 It can be seen that the output regulation module 400 includes a transistor 401 and a driving circuit 402. The control end of the transistor 401 is connected to the main control module 200 through the driving circuit 402. The driving circuit 402 receives the second control signal and adjusts the bias current of the transistor 401 to adjust the output current to the target charging current.

[0037] The second control signal is expressed as: ,in, is the control coefficient, In practical applications, in order to avoid overcharging or overcurrent, a target charging current upper limit is set. When the target charging current is greater than the target charging current upper limit, the second control signal needs to be dynamically adjusted according to the target charging current upper limit, that is, , and at this time The value range of is greater than 0 and less than or equal to 1, so as to ensure that the charging current is limited within a safe range; when the target charging current is less than the target charging current upper limit, there is no need to adjust the current limit, and the second control signal is directly generated according to the target charging current.

[0038] The main control module 200 sends an adjustment instruction to the drive circuit 402 through the second control signal. After receiving the signal, the drive circuit 402 adjusts the bias current of the transistor 401 according to the second control signal. The working state of the transistor 401 determines the path through which the current passes. When the second control signal increases, the conduction state of the transistor 401 is enhanced, the current path becomes wider, and the output current increases; when the second control signal decreases, the conduction state of the transistor 401 is weakened, and the output current decreases. By adjusting the bias current of the transistor 401 according to the second control signal, the output current can be accurately controlled to ensure that it meets the requirements of the target charging current.

[0039] The output current is adjusted according to the second control signal sent by the main control module by using the cooperation of transistors and drive circuits through the output regulation module. The second control signal is proportional to the target charging current and can be dynamically optimized according to the target charging current upper limit. In this way, it can ensure that the charging current is always kept within a safe range, avoiding the risk of overcurrent and overcharging, while achieving precise charging control.

[0040] The beneficial effects of the embodiments of the present application are as follows: the input module converts the received alternating current into direct current with a stable voltage, and the main control module generates a first control signal in a first proportional relationship with the target charging voltage and a second control signal in a second proportional relationship with the target charging current according to the charging request sent by the charging interface, and the first control signal can drive the multi-mode conversion module to dynamically convert in a boost or buck mode to convert the input voltage into an output voltage matching the target charging voltage, and the second control signal can drive the output regulation module to adjust the output current to an output current matching the target charging current, so as to ensure that the output voltage and the output current match the charging requirements of the device to be charged; further, by combining the target charging current upper limit of the device to be charged, the second control signal is dynamically optimized to prevent overload or thermal runaway, so as to ensure the efficiency, safety and reliability of the charging process.

[0041] Also, see Figure 4 As shown, Figure 4 A schematic block diagram of an adaptive power adapter provided by another embodiment of the present application. Figure 4 It can be seen that the power adapter also includes a protection module 600, which is used to monitor the operating status of the power adapter and stop outputting the charging voltage in abnormal situations to protect the power adapter and the device to be charged.

[0042] Furthermore, the power adapter also includes an identification module (not shown in the figure), which is connected to the main control module and is used to support multiple smart charging protocols.

[0043] See also Figure 5 , Figure 5A flowchart of a method for adjusting an adaptive power adapter provided in an embodiment of the present application. Figure 1 or Figure 4 The adaptive power adapter shown in the embodiment. The adjustment method of the adaptive power adapter includes the following steps: S501: receiving a charging request sent by a device to be charged through a charging interface, and generating a first control signal in a first proportional relationship with a target charging voltage according to the charging request, so as to drive a multi-mode conversion module to dynamically convert between a boost mode and a buck mode.

[0044] S502: Generate a second control signal in a second proportional relationship with the target charging current according to the charging request, and dynamically optimize the second control signal in combination with the target charging current upper limit of the device to be charged.

[0045] S503: Send a first control signal to the multi-mode conversion module, and send a second control signal to the output regulation module, so that the multi-mode conversion module converts the stable voltage into an output voltage matching the target charging voltage according to the first control signal, and the output regulation module adjusts the output current to an output current matching the target charging current according to the second control signal; wherein the stable voltage is the voltage at which the input module converts the received alternating current into direct current, and the output voltage and output current are transmitted to the device to be charged by the charging interface.

[0046] Specifically, the specific implementation process of the above steps can be referred to Figures 1 to 4 The specific description of the corresponding part will not be repeated here.

[0047] The beneficial effects of the embodiments of the present application are as follows: the input module converts the received alternating current into direct current with a stable voltage, and the main control module generates a first control signal in a first proportional relationship with the target charging voltage and a second control signal in a second proportional relationship with the target charging current according to the charging request sent by the charging interface, and the first control signal can drive the multi-mode conversion module to dynamically convert in a boost or buck mode to convert the input voltage into an output voltage matching the target charging voltage, and the second control signal can drive the output regulation module to adjust the output current to an output current matching the target charging current, so as to ensure that the output voltage and the output current match the charging requirements of the device to be charged; further, by combining the target charging current upper limit of the device to be charged, the second control signal is dynamically optimized to prevent overload or thermal runaway, so as to ensure the efficiency, safety and reliability of the charging process.

[0048] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into a processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0049] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0050] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. An adaptive power adapter, characterized in that: The power adapter includes an input module, a main control module, a multi-mode conversion module, an output adjustment module and a charging interface; The input module is used to receive alternating current and convert the alternating current into direct current with a stable input voltage; The main control module is used to receive a charging request sent by the device to be charged through the charging interface, and generate a first control signal in a first proportional relationship with a target charging voltage according to the charging request, wherein the first control signal is used to control the multi-mode conversion module to dynamically convert between a boost mode and a buck mode; generate a second control signal in a second proportional relationship with a target charging current according to the charging request, and dynamically optimize the second control signal in combination with the target charging current upper limit of the device to be charged; send the first control signal to the multi-mode conversion module, and send the second control signal to the output regulation module; The multi-mode conversion module is connected to the input module and the main control module, and is used to convert the input voltage into an output voltage matching the target charging voltage according to the first control signal; The output regulating module is connected to the main control module, and is used to regulate the input current to an output current matching the target charging current according to the second control signal; The charging interface is used to transmit the output voltage and the output current to the device to be charged.

2. The adaptive power adapter according to claim 1, characterized in that: The input module includes an AC-DC converter.

3. The adaptive power adapter according to claim 2, characterized in that: The main control module is used to receive a charging request sent by the device to be charged through the charging interface, parse the target charging parameters carried in the charging request, extract the target charging voltage and the target charging current; generate the first control signal according to the target charging voltage, and generate the second control signal according to the target charging current.

4. The adaptive power adapter according to claim 3, characterized in that: The multi-mode conversion module includes a mode selection circuit and a voltage conversion circuit; The mode selection circuit is connected to the main control module and is used to dynamically select and activate a voltage conversion circuit suitable for the target charging voltage according to the first control signal; The voltage conversion circuit is used to convert the output voltage to obtain the target charging voltage.

5. The adaptive power adapter according to claim 4, characterized in that: The first control signal is expressed as: ;in, is the first proportionality coefficient, which is an integer greater than or equal to 1. is the target charging voltage, is the input voltage.

6. The adaptive power adapter according to claim 5, characterized in that: The voltage conversion circuit includes a boost conversion circuit and a buck conversion circuit.

7. The adaptive power adapter according to claim 1, wherein: The output regulation module includes a transistor and a drive circuit. The control end of the transistor is connected to the main control module through the drive circuit. The drive circuit receives the second control signal and adjusts the bias current of the transistor to adjust the output current to the target charging current.

8. The adaptive power adapter according to claim 7, wherein: The power adapter also includes a protection module for monitoring the operating state of the power adapter and stopping outputting the charging voltage in an abnormal situation to protect the power adapter and the device to be charged.

9. The adaptive power adapter according to claim 7, wherein: The power adapter also includes an identification module, which is connected to the main control module and is used to support multiple smart charging protocols.

10. A method for adjusting an adaptive power adapter, characterized in that: Applied to the adaptive regulating power adapter according to any one of claims 1 to 9, the method comprises: Receiving a charging request sent by a device to be charged through a charging interface, and generating a first control signal in a first proportional relationship with a target charging voltage according to the charging request, so as to drive the multi-mode conversion module to dynamically convert between a boost mode and a buck mode; generating a second control signal in a second proportional relationship with the target charging current according to the charging request, and dynamically optimizing the second control signal in combination with the target charging current upper limit of the device to be charged; The first control signal is sent to the multi-mode conversion module, and the second control signal is sent to the output regulation module, so that the multi-mode conversion module converts the stable voltage into an output voltage matching the target charging voltage according to the first control signal, and the output regulation module regulates the output current into an output current matching the target charging current according to the second control signal; wherein the stable voltage is the voltage at which the input module converts the received alternating current into direct current, and the output voltage and the output current are transmitted to the device to be charged by the charging interface.

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