Correction circuit, charging circuit, power adapter, power module and electronic equipment

Abstract

The utility model relates to a correction circuit, a charging circuit, a power adapter, a power module and electronic equipment, the correction circuit is connected between a power supply and a power output module, and the correction circuit comprises a first end connected with the power supply and a second end connected with the power output module; the rectifier bridge is arranged between the first end and the second end; and the first correction module is arranged between the rectifier bridge and the first end, the first correction module comprises a first correction piece and a second correction piece, and the first correction piece and the second correction piece are used for filtering current harmonics of different frequencies. According to the passive correction circuit, the first correction module is arranged between the rectifier bridge and the first end to correct the current waveform input to the correction circuit, and the first correction piece and the second correction piece are respectively used for correcting, smoothing and absorbing current harmonics of different frequencies, so that the influence of current distortion is reduced, and the output power of the passive correction circuit is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of power supply technology, and in particular to a correction circuit, a charging circuit, a power adapter, a power module and an electronic device. Background Art

[0002] Switching power supplies have the advantages of high efficiency, wide voltage range and high power, and are widely used in electrical equipment. However, its negative effects are gradually emerging with a large number of applications: in the switching power supply circuit, direct filtering after rectification is generally used to provide DC power to the subsequent circuit. This method will cause serious distortion of the current waveform in the power supply line, and the resulting harm may threaten personal safety.

[0003] In order to solve the adverse effects caused by current distortion, the current waveform in the power supply line needs to be corrected to a sinusoidal shape and the same as the input mains voltage waveform. Utility Model Content

[0004] In order to overcome the problems existing in the related art, the present disclosure provides a correction circuit, a charging circuit, a power adapter, a power module and an electronic device.

[0005] According to a first aspect of an embodiment of the present disclosure, a correction circuit is provided, wherein the correction circuit is connected between a power supply and a power output module, and wherein the correction circuit comprises: a first end connected to the power supply and a second end connected to the power output module; a rectifier bridge disposed between the first end and the second end; and a first correction module, wherein the first correction module is disposed between the rectifier bridge and the first end, and wherein the first correction module comprises a first correction component and a second correction component, wherein the first correction component and the second correction component are used to filter current harmonics of different frequencies.

[0006] In some embodiments, the first correction module includes: a third correction component, the third correction component is arranged between the rectifier bridge and the first end, and the third correction component is used to filter current harmonics of different frequencies together with the first correction component and the second correction component.

[0007] In some embodiments, the correction circuit includes a first subcircuit and a second subcircuit connected between the first end and the rectifier bridge; the first subcircuit is connected to the live wire of the power supply; the second subcircuit is connected to the neutral wire of the power supply; the first correction component includes a first inductor and a second inductor, and the first inductor and the second inductor are respectively arranged in the first subcircuit and the second subcircuit; the second correction component includes a third inductor and a fourth inductor, and the third inductor and the fourth inductor are respectively arranged in the first subcircuit and the second subcircuit, wherein the first inductor is arranged relative to the second inductor so that the magnetic flux generated by the common-mode current flowing from the first end to the rectifier bridge in the first inductor and the magnetic flux generated in the second inductor cancel each other out; the third inductor and the fourth inductor are arranged relative to each other so that the magnetic flux generated by the common-mode current flowing from the first end to the rectifier bridge in the third inductor and the magnetic flux generated in the fourth inductor cancel each other out.

[0008] In some embodiments, the third correction component is a capacitor, one end of the third correction component is connected between the first inductor and the second inductor, and the other end of the third correction component is connected between the third inductor and the fourth inductor.

[0009] In some embodiments, the correction circuit includes: a second correction module, and the second correction module is arranged between the rectifier bridge and the second end.

[0010] In some embodiments, the correction circuit includes a third sub-circuit and a fourth sub-circuit connected to the second end and the rectifier bridge; the second correction module includes a capacitor group, one end of the capacitor group is arranged in the third sub-circuit, and the other end of the capacitor group is arranged in the fourth sub-circuit.

[0011] In some embodiments, the second correction module includes a fifth inductor, and the fifth inductor is disposed in the third sub-circuit.

[0012] In some embodiments, the capacitor group includes a first capacitor group and a second capacitor group, the first capacitor group is arranged between the rectifier bridge and the fifth inductor, and the second capacitor group is arranged between the fifth inductor and the second end.

[0013] In some embodiments, the correction circuit further includes a protection module, which is disposed between the first correction module and the first end, and is used to control the current flowing into the correction circuit to be within a safe current range.

[0014] In some embodiments, the protection module includes one or more of a thermistor and a fuse.

[0015] According to a second aspect of an embodiment of the present disclosure, a charging circuit is provided, and the charging circuit includes: the voltage transformation circuit described in any one of the first aspects.

[0016] According to a third aspect of an embodiment of the present disclosure, a power adapter is provided, and the power adapter includes: the voltage conversion circuit described in any one of the first aspect, or the charging circuit described in the second aspect.

[0017] According to a fourth aspect of an embodiment of the present disclosure, a power supply module is provided, and the power supply module includes: the voltage conversion circuit described in any one of the first aspect, or the charging circuit described in the second aspect.

[0018] According to a fifth aspect of an embodiment of the present disclosure, an electronic device is provided, comprising the correction circuit described in any one of the first aspects.

[0019] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: the present disclosure corrects the current waveform input to the correction circuit by providing a first correction module between the rectifier bridge and the first end, and corrects, smoothes and absorbs current harmonics of different frequencies through the first correction component and the second correction component respectively, thereby enhancing the harmonic processing capability of the correction circuit, expanding the harmonic margin of the correction circuit, reducing the impact of current distortion, and improving the output power of the passive correction circuit.

[0020] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0022] Figure 1 is a schematic diagram showing a correction circuit according to an exemplary embodiment.

[0023] Figure 2 is a schematic diagram of a charging circuit according to an exemplary embodiment.

[0024] Figure 3 The figure is a schematic diagram showing the connection between an electronic device and a charging circuit according to an exemplary embodiment. DETAILED DESCRIPTION

[0025] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0026] In related technologies, the number of harmonics injected into the power grid can be reduced by adding filters in the rectifier circuit, and high-order harmonics can be filtered out using low-pass filters, which is passive power factor correction technology. Ideally, only the 50Hz fundamental wave can be retained. However, in practical applications, this method is less efficient in improving the power factor of equipment and is not suitable for high-power solutions because the added capacitors and inductors will cause losses in efficiency, size, and weight.

[0027] In order to solve the above technical problems, according to an embodiment of the present disclosure, a correction circuit is provided, wherein the correction circuit includes: a first end connected to the power supply and a second end connected to the power output module; a rectifier bridge, arranged between the first end and the second end; a first correction module, wherein the first correction module is arranged between the rectifier bridge and the first end, and the first correction module includes a first correction component and a second correction component, wherein the first correction component and the second correction component are used to filter current harmonics of different frequencies.

[0028] The present invention corrects the current waveform input to the correction circuit by arranging a first correction module between the rectifier bridge and the first end, and corrects, smoothes and absorbs current harmonics of different frequencies through the first correction component and the second correction component respectively, thereby enhancing the harmonic processing capability of the correction circuit and expanding the harmonic margin of the correction circuit to reduce the impact of current distortion and improve the output power of the passive correction circuit.

[0029] It can be understood that the voltage conversion circuit, charging circuit and power adapter involved in the present disclosure can be applicable to charging electrical devices.

[0030] It is understandable that the power-consuming device involved in the present disclosure is a device with a rechargeable power supply. For example, the power-consuming device may be a handheld device with a battery, a vehicle-mounted device, etc. At present, some examples of power-consuming devices are: smart phones (Mobile Phones), pocket personal computers (Pocket Personal Computers, PPCs), handheld computers, personal digital assistants (Personal Digital Assistants, PDAs), laptops, tablet computers, wearable devices, vehicle-mounted devices, or motor vehicles with rechargeable power supplies, etc. In addition, when it is a vehicle-to-everything (V2X) communication system, the terminal device may also be a vehicle-mounted device. It should be understood that the embodiments of the present disclosure do not limit the specific technology and specific device form adopted by the power-consuming device.

[0031] It can be understood that the correction circuit can be a correction circuit for improving the power factor of the circuit.

[0032] In some embodiments, Figure 1 As shown, the correction circuit can be connected between the power supply and the power output module.

[0033] The correction circuit may include a first terminal 10 , a second terminal 20 , a rectifier bridge BD1 , and a first correction module.

[0034] The rectifier bridge BD1 may be disposed between the first end 10 and the second end 20, and the first correction module may be disposed between the rectifier bridge BD1 and the first end 10. The power source may be an AC power source.

[0035] The rectifier bridge BD1 can convert AC power into DC power.

[0036] Exemplarily, the rectifier bridge BD1 can be composed of four diodes, which are arranged in a bridge circuit, and the unidirectional conduction characteristics of the diodes are used to make the current flow in only one direction. In the positive half cycle of the alternating current, the rectifier bridge BD1 allows the current to flow only from two diodes to the other two diodes, thereby outputting unidirectional direct current. Similarly, in the negative half cycle, the current can only flow in the reverse direction. In this way, the rectifier bridge BD1 converts the fluctuation of the alternating current into a stable flow of direct current.

[0037] The first end 10 can be connected to a power source, and the second end 20 can be connected to a power output module. The current of the power source can flow into the correction circuit from the first end 10 , and flow through the first correction module and the rectifier bridge BD1 and out of the correction circuit from the second end 20 .

[0038] The first correction module may include a first correction component 41 and a second correction component 42 , and the first correction component 41 and the second correction component 42 may filter current harmonics of different frequencies respectively.

[0039] Exemplarily, the first correction component 41 and the second correction component 42 can be inductors, and the first correction component 41 and the second correction component 42 can use the characteristic that the current in the inductor cannot change suddenly to reduce the phase difference between the fundamental current and the voltage of the AC input, smooth the current curve, and thus improve the power factor. By configuring the first correction component 41 and the second correction component 42 to have different inductance values, the first correction component 41 and the second correction component 42 can filter current harmonics of different frequencies respectively, thereby enhancing the harmonic processing capability of the correction circuit, expanding the harmonic margin of the correction circuit, reducing the impact of current distortion, and improving the output power of the passive correction circuit.

[0040] The present invention corrects the current waveform input to the correction circuit by providing a first correction module between the rectifier bridge BD1 and the first end 10, and corrects, smoothes and absorbs current harmonics of different frequencies through the first correction component 41 and the second correction component 42, thereby enhancing the harmonic processing capability of the correction circuit, expanding the harmonic margin of the correction circuit, reducing the impact of current distortion, and improving the output power of the passive correction circuit.

[0041] In some embodiments, Figure 1 As shown, the first correction module may include a third correction member 43 .

[0042] The third correction component 43 can be arranged between the rectifier bridge BD1 and the first end 10, and the third correction component 43, the first correction component 41 and the second correction component 42 can filter current harmonics of different frequencies. Exemplarily, the first correction component 41 can filter and absorb low-frequency current harmonics, the second correction component 42 can filter and absorb high-frequency harmonics, and the third correction component 43 can filter and absorb medium-frequency harmonics.

[0043] The present invention corrects the current waveform input to the correction circuit by providing a first correction module between the rectifier bridge BD1 and the first end 10, and corrects, smoothes and absorbs current harmonics of different frequencies through the first correction component 41, the second correction component 42 and the third correction component 43 respectively, thereby further enhancing the harmonic processing capability of the correction circuit, further expanding the harmonic margin of the correction circuit, reducing the impact of current distortion, and improving the output power of the passive correction circuit.

[0044] In some embodiments, the correction circuit may include a first sub-circuit 11 and a second sub-circuit 12 connected between the first terminal 10 and the rectifier bridge BD1 .

[0045] The first sub-circuit 11 can be connected to the live wire of the power supply, and the second sub-circuit 12 can be connected to the neutral wire of the power supply.

[0046] The first correction component 41 may include a first inductor L1 and a second inductor L2, which may be respectively arranged in the first subcircuit 11 and the second subcircuit 12, and the second correction component 42 may include a third inductor L3 and a fourth inductor L4, which may be respectively arranged in the first subcircuit 11 and the second subcircuit 12.

[0047] The first correction component 41 and the second correction component 42 utilize the characteristic that the current in the inductor cannot change suddenly to reduce the phase difference between the fundamental current and voltage of the AC input, smooth the current curve, and thus improve the power factor. By configuring the first correction component 41 and the second correction component 42 to have different inductance values, the first correction component 41 and the second correction component 42 can filter current harmonics of different frequencies respectively, thereby enhancing the harmonic processing capability of the correction circuit, expanding the harmonic margin of the correction circuit, reducing the impact of current distortion, and improving the output power of the passive correction circuit.

[0048] And because when a changing current flows through the inductor, the inductor will generate a back electromotive force, the direction of which prevents the current from changing, thereby reducing the peak current passing through the inductor, thereby making the sharper current harmonics smooth. Also due to its characteristic of generating reverse induced electromotive force, after the voltage input to the correction circuit reaches its peak value, a certain voltage difference can still be maintained across the inductor, thereby increasing the current conduction angle.

[0049] Among them, the first inductor L1 and the second inductor L2 are arranged opposite to each other so that the magnetic flux generated by the common-mode current flowing from the first end 10 to the rectifier bridge BD1 in the first inductor L1 and the magnetic flux generated in the second inductor L2 offset each other, and the third inductor L3 and the fourth inductor L4 are arranged opposite to each other so that the magnetic flux generated by the common-mode current flowing from the first end 10 to the rectifier bridge BD1 in the third inductor L3 and the magnetic flux generated in the fourth inductor L4 offset each other.

[0050] Through the above configuration, the magnetic flux generated by the common-mode current flowing through the first correction component 41 and the second correction component 42 can be superimposed on each other, so that there is a large inductance, which can suppress the common-mode current flowing into the correction circuit and prevent the common-mode current from affecting other electronic components. When the differential-mode current flows through the first correction component 41 and the second correction component 42, the magnetic flux in the first correction component 41 and the second correction component 42 cancel each other out, and there is almost no inductance, so the differential-mode current can pass without attenuation. Therefore, the first sub-circuit 11 and the second sub-circuit 12 can effectively suppress the common-mode interference signal and transmit the differential-mode signal normally. Exemplarily, the differential-mode signal can be 220V AC.

[0051] In some embodiments, Figure 1As shown, the third correction component 43 can be a capacitor, which can filter and absorb current harmonics. One end of the third correction component 43 can be connected between the first inductor L1 and the second inductor L2, and the other end of the third correction component 43 is connected between the third inductor L3 and the fourth inductor L4.

[0052] By making the first correction component 41, the second correction component 42 and the third correction component 43 form an inductor-capacitor-inductor circuit, the filtering effect of the correction component on current harmonics can be improved. And by making the first correction component 41, the second correction component 42 and the third correction component 43 correct, smooth and absorb current harmonics of different frequencies respectively, the harmonic processing capability of the correction circuit is further enhanced, and the harmonic margin of the correction circuit is further expanded to reduce the influence of current distortion and improve the output power of the passive correction circuit.

[0053] The first correction component 41 can filter and absorb low-frequency current harmonics, the second correction component 42 can filter and absorb high-frequency harmonics, and the third correction component 43 can filter and absorb intermediate-frequency harmonics.

[0054] In some embodiments, Figure 1 As shown, the correction circuit may include: a second correction module.

[0055] The second correction module can be arranged between the rectifier bridge BD1 and the second end 20. The second correction module and the first correction module can perform multiple correction processes on the current flowing into the correction circuit, thereby further enhancing the current harmonic processing capability of the correction circuit.

[0056] And the first correction module and the second correction module are respectively arranged on both sides of the rectifier bridge BD1. Since the current waveform will be superimposed in the rectifier bridge BD1 after the current passes through the rectifier bridge BD1, thereby generating new current harmonics and current distortion, the second correction module arranged between the rectifier bridge BD1 and the second end 20 can further filter the current harmonics, enhance the harmonic processing capability of the correction circuit, further expand the harmonic margin of the correction circuit, reduce the impact of current distortion, and improve the output power of the passive correction circuit.

[0057] In some embodiments, Figure 1 As shown, the correction circuit may include a third subcircuit 21 and a fourth subcircuit 22 connected to the second terminal 20 and the rectifier bridge BD1. The third subcircuit 21 and the fourth subcircuit 22 may be two output branches of the rectifier bridge BD1. The current flowing into the correction circuit from the first terminal 10 may flow into the rectifier bridge BD1 from the first subcircuit 11 and the second subcircuit 12, and then flow out of the rectifier bridge BD1 from the third subcircuit 21 and the fourth subcircuit 22 and flow to the second terminal 20.

[0058] The second correction module may include a capacitor group, one end of the capacitor group may be arranged in the third sub-circuit 21 , and the other end of the capacitor group may be arranged in the fourth sub-circuit 22 .

[0059] The capacitor bank may include multiple capacitors, for example, Figure 1 As shown, the capacitor group may include a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5 and a sixth capacitor C6. The capacitors may have filtering and absorption effects on current harmonics.

[0060] Furthermore, by providing a plurality of capacitors between the second end 20 and the rectifier bridge BD1, the capacitance parameter requirements that originally required a large capacitor with a larger volume can be met, thereby enhancing the harmonic processing capability of the correction circuit, further expanding the harmonic margin of the correction circuit, reducing the volume of the correction circuit, reducing the impact of current distortion, and improving the output power of the passive correction circuit.

[0061] In some embodiments, Figure 1 As shown, the second correction module may include a fifth inductor L5 , and the fifth inductor L5 may be disposed in the third sub-circuit 21 .

[0062] The third correction component 43 can utilize the characteristic that the current in the inductor cannot change suddenly to reduce the phase difference between the fundamental current and voltage of the AC input, so as to smooth the current curve and thus improve the power factor. After the current passes through the rectifier bridge BD1, the current waveform will be superimposed in the rectifier bridge BD1, thereby generating new current harmonics and current distortion. Therefore, the fifth inductor L5 arranged between the rectifier bridge BD1 and the second end 20 can further filter the current harmonics, enhance the harmonic processing capability of the correction circuit, and further expand the harmonic margin of the correction circuit to reduce the impact of current distortion and improve the output power of the passive correction circuit.

[0063] And because when a changing current flows through the inductor, the inductor will generate a back electromotive force, the direction of which prevents the current from changing, thereby reducing the peak current passing through the inductor, thereby making the sharper current harmonics smooth. Also due to its characteristic of generating reverse induced electromotive force, after the voltage input to the correction circuit reaches its peak value, a certain voltage difference can still be maintained across the inductor, thereby increasing the current conduction angle.

[0064] In some embodiments, Figure 1 As shown, the capacitor group may include a first capacitor group C1 and a second capacitor group C2. The first capacitor group C1 may be disposed between the rectifier bridge BD1 and the fifth inductor L5. The second capacitor group C2 may be disposed between the fifth inductor L5 and the second end 20.

[0065] After the current passes through the rectifier bridge BD1, the current waveform will be superimposed in the rectifier bridge BD1, thereby generating new current harmonics. Since the superimposed current harmonics have a higher amplitude, the second correction module arranged between the rectifier bridge BD1 and the fifth inductor L5 can first limit the current amplitude and perform preliminary filtering on the current harmonics to prevent the current harmonic amplitude from exceeding the effective range of the fifth inductor L5, thereby enhancing the harmonic processing capability of the correction circuit and further expanding the harmonic margin of the correction circuit to reduce the impact of current distortion and improve the output power of the passive correction circuit.

[0066] In some embodiments, Figure 1 As shown, the correction circuit may further include a protection module, which may be disposed between the first correction module and the first end 10, and the protection module may be used to control the current flowing into the correction circuit to be within a safe current range. Exemplarily, when the current flowing into the correction circuit is too large, the protection module may limit the current amplitude or disconnect the correction circuit from the power supply, thereby protecting the electronic components in the circuit.

[0067] In some embodiments, Figure 1 As shown, the protection module may include one or more of a thermistor and a fuse F1.

[0068] Exemplarily, the protection module may include a first thermistor RT1 and a second thermistor RT2, and the first thermistor RT1 and the second thermistor RT2 may be negative temperature coefficient thermistors. When the correction circuit is connected to the power supply, the resistance of the first thermistor RT1 and the second thermistor RT2 is relatively large, so that the thermistors can weaken the current flowing through the correction circuit.

[0069] When the correction circuit is connected to the power supply when the AC power supply is at the peak voltage, the power supply will generate a large impact current to the correction circuit, and the thermistor can reduce the input voltage waveform distortion of the power port. Therefore, the first thermistor RT1 and the second thermistor RT2 can be set in the first sub-circuit 11 connected to the live wire of the power supply.

[0070] Exemplarily, the protection module may further include a fuse F1. When the current in the correction circuit is too large, the fuse F1 may be blown to disconnect the correction circuit from the power supply, thereby protecting the electronic components in the circuit.

[0071] Based on the same concept, Figure 2 As shown, the embodiment of the present disclosure also provides a charging circuit.

[0072] In some embodiments, the charging circuit may include a correction circuit 1000 , a main control circuit 1001 , a voltage transformation circuit 1002 , a first port 103 , and a protocol logic module 104 .

[0073] The voltage conversion circuit 1002 can change the voltage of the power supply to the charging voltage required by the power-consuming device.

[0074] The main control circuit 1001 can be used to control the conduction relationship between the correction circuit and the voltage conversion circuit, so as to control the correction circuit to charge the voltage conversion circuit in accordance with the current frequency.

[0075] The protocol logic module 104 is used to manage the charging protocol and control the charging strategy.

[0076] The first port 103 may be used to connect to an electric device to input the current of the power supply into the electric device.

[0077] Based on the same concept, the embodiment of the present disclosure also provides a power adapter. The power adapter can be a device used to convert external power to meet the charging parameter requirements of the power-consuming device.

[0078] The power-consuming device may be a laptop computer, a desktop computer, a mobile phone, a digital broadcast terminal, a message transceiver device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, a translation machine, a watch, a bracelet, and a motor vehicle with a rechargeable power source, etc. It may be any power-consuming device with a rechargeable power source. In the following description, a mobile phone is used as an example, but the present disclosure is not limited thereto.

[0079] In some embodiments, the power adapter may include a charging circuit, and the power adapter may convert the current and voltage of the external power supply into the current and voltage that meet the charging parameter requirements of the power-consuming device. For example, the power adapter may convert 220V AC into 5V-28V DC.

[0080] In some embodiments, the power output by the power adapter may be 67W to 120W.

[0081] Based on the same concept, the embodiment of the present disclosure also provides a power supply module. The power supply module can be a device that converts other forms of energy into electrical energy and provides electrical energy.

[0082] The power module may be a mobile power source, a rechargeable battery built into an electronic device, a storage battery, a fixed charging pile, etc., and may be a device with a charging function. In the following description, a mobile power source is used as an example, but the present disclosure is not limited thereto.

[0083] In some embodiments, the power module may include a charging circuit, and the power module may convert the current and voltage of the external power source into the current and voltage that meet the charging parameter requirements of the power module. Exemplarily, the power module may convert 220V AC into 5V-28V DC.

[0084] Based on the same concept, an embodiment of the present disclosure also provides an electronic device.

[0085] The electronic device may be a laptop computer, a desktop computer, a mobile phone, a digital broadcast terminal, a message transceiver device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, a translation machine, a watch, a bracelet, and a motor vehicle with a rechargeable power source, etc., and may be any electronic device with a rechargeable power source. In the following description, a mobile phone is taken as an example, but the present disclosure is not limited thereto.

[0086] In some embodiments, the electronic device may include a correction circuit and a charging module. The charging circuit may charge the electronic device through the charging module. Exemplarily, the charging module may be a combination of a charging port of the electronic device and a charging-related circuit component. The charging parameters of the electronic device provided by the charging module may match the charging parameters output by the charging circuit, so that the charging module may carry the current and voltage output by the charging circuit, thereby realizing fast charging of the electronic device.

[0087] In some embodiments, Figure 3 As shown, the power adapter 100 may include a primary high-voltage module 101 , a power output module 102 , a first port 103 and a protocol logic module 104 .

[0088] The current of the power supply can be input into the power adapter from the primary high voltage module 101 and then input into the power output module 102 through the voltage conversion circuit 1002. The power consumption device 200 may include a second port 201, a control system 205, a battery module 204, a power management module 202 and a power consumption module 203.

[0089] The first port 103 and the second port 201 can be electrically connected, the power output module 102 can output current from the first port 103 and input current into the power-consuming device through the second port 201, the power management module 202 and the control system 205 are used to manage the battery module 204 and the charging strategy, and the power consumption module 203 can be a functional element that consumes electrical energy and realizes specific functions.

[0090] It is to be understood that in the present disclosure, "plurality" refers to two or more than two, and other quantifiers are similar. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. The singular forms "a", "the" and "the" are also intended to include plural forms, unless the context clearly indicates other meanings.

[0091] It is further understood that the terms "second", "secondary", etc. are used to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other and do not indicate a specific order or degree of importance. In fact, the expressions "secondary", "secondary", etc. can be used interchangeably. For example, without departing from the scope of the present disclosure, the second information may also be referred to as the second information, and similarly, the second information may also be referred to as the second information.

[0092] It will be further understood that the terms “center”, “longitudinal”, “lateral”, “front”, “back”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation.

[0093] It can be further understood that, unless otherwise specified, “connection” includes a direct connection without other components between the two, and also includes an indirect connection with other components between the two.

[0094] It is further understood that, although the operations are described in a specific order in the drawings in the embodiments of the present disclosure, it should not be understood as requiring the operations to be performed in the specific order shown or in a serial order, or requiring the execution of all the operations shown to obtain the desired results. In certain environments, multitasking and parallel processing may be advantageous.

[0095] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the utility model disclosed herein. This application is intended to cover any modification, use or adaptation of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary technical means in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the following scope of rights.

[0096] It should be understood that the present disclosure is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the scope of the appended claims.

Claims

1. A correction circuit, characterized in that: The correction circuit is connected between the power supply and the power output module, and the correction circuit includes: a first end connected to the power supply and a second end connected to the power output module; A rectifier bridge, arranged between the first end and the second end; A first correction module, the first correction module is arranged between the rectifier bridge and the first end, the first correction module includes a first correction component and a second correction component, Wherein, the first correction component and the second correction component are used to filter current harmonics of different frequencies.

2. The correction circuit according to claim 1, characterized in that: The first correction module comprises: A third correction component is arranged between the rectifier bridge and the first end, and is used to filter current harmonics of different frequencies together with the first correction component and the second correction component.

3. The correction circuit according to claim 2, characterized in that: The correction circuit includes a first subcircuit and a second subcircuit connected between the first end and the rectifier bridge; The first subcircuit is connected to the live wire of the power supply; The second sub-circuit is connected to the neutral line of the power supply; The first correction element includes a first inductor and a second inductor, and the first inductor and the second inductor are respectively arranged in the first sub-circuit and the second sub-circuit; The second correction element includes a third inductor and a fourth inductor, and the third inductor and the fourth inductor are respectively arranged in the first sub-circuit and the second sub-circuit, The first inductor and the second inductor are arranged opposite to each other so that the magnetic flux generated by the common mode current flowing from the first end to the rectifier bridge in the first inductor and the magnetic flux generated by the second inductor cancel each other out; The third inductor and the fourth inductor are arranged opposite to each other so that the magnetic flux generated by the common-mode current flowing from the first end to the rectifier bridge in the third inductor and the magnetic flux generated by the fourth inductor cancel each other out.

4. The correction circuit according to claim 3, characterized in that: The third correction component is a capacitor, one end of the third correction component is connected between the first inductor and the second inductor, and the other end of the third correction component is connected between the third inductor and the fourth inductor.

5. The correction circuit according to claim 1, characterized in that: The correction circuit comprises: A second correction module is arranged between the rectifier bridge and the second end.

6. The correction circuit according to claim 5, characterized in that: The correction circuit includes a third subcircuit and a fourth subcircuit connected to the second end and the rectifier bridge; The second correction module includes a capacitor group, one end of the capacitor group is arranged in the third sub-circuit, and the other end of the capacitor group is arranged in the fourth sub-circuit.

7. The correction circuit according to claim 6, characterized in that: The second correction module includes a fifth inductor, and the fifth inductor is arranged in the third sub-circuit.

8. The correction circuit according to claim 7, characterized in that: The capacitor group includes a first capacitor group and a second capacitor group, the first capacitor group is arranged between the rectifier bridge and the fifth inductor, and the second capacitor group is arranged between the fifth inductor and the second end.

9. The correction circuit according to claim 1, characterized in that: The correction circuit further includes a protection module, which is disposed between the first correction module and the first end, and is used to control the current flowing into the correction circuit to be within a safe current range.

10. The correction circuit according to claim 9, characterized in that: The protection module includes one or more of a thermistor and a fuse.

11. A charging circuit, characterized in that: include: The correction circuit as claimed in any one of claims 1 to 10; A power output module is connected to the second end of the correction circuit.

12. A power adapter, characterized in that: include: A correction circuit as claimed in any one of claims 1 to 10, or The charging circuit as claimed in claim 11.

13. A power module, characterized in that: include: A correction circuit as claimed in any one of claims 1 to 10, or The charging circuit as claimed in claim 11.

14. An electronic device, characterized in that: Comprising a correction circuit as claimed in any one of claims 1 to 10.

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