Charging circuit, charging device and electronic equipment

Abstract

The utility model relates to a charging circuit, a charging device and electronic equipment, and the charging circuit comprises an input positive electrode end and an input negative electrode end which are used for connecting an external power supply; the input end of the controlled switch circuit is connected with the input positive electrode end and the input negative electrode end, and the output end of the controlled switch circuit is used for supplying power to the electronic equipment; the control unit is provided with a first detection end, a second detection end and a control end, the first detection end is connected with the input positive electrode end, the second detection end is connected with the input negative electrode end, and the control end is connected with the controlled switch circuit to control the controlled switch circuit to be switched and conducted. The first communication end is used for communication between the electronic device and the outside. The control unit is used for detecting whether the external power supply connected with the input positive electrode end and the input negative electrode end is in positive connection or reverse connection, so that the number of pins used for being connected with the external power supply is effectively reduced, and corrosion and burning loss caused by dense and more pins during high-voltage charging are further avoided.

Description

Technical Field

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

[0002] Some USB (Universal Serial Bus) interfaces feature a reversible plug-in function, but as the interface becomes more widely used, many problems have emerged. Port corrosion and burning is the most common problem in the industry, because the pins in the interface are densely packed and numerous, which are prone to corrosion and burning during high-voltage charging. Utility Model Content

[0003] In order to overcome the problems existing in the related art, the present disclosure provides a charging circuit, a charging device and an electronic device.

[0004] According to a first aspect of an embodiment of the present disclosure, a charging circuit is provided, characterized in that it is applied to an electronic device, comprising:

[0005] An input positive terminal and an input negative terminal, wherein the input positive terminal and the input negative terminal are used to connect to an external power source;

[0006] A controlled switch circuit, wherein the input end of the controlled switch circuit is respectively connected to the input positive end and the input negative end, and the output end of the controlled switch circuit is used to power the electronic device; a control unit, wherein the control unit has a first detection end, a second detection end and a control end, the first detection end is connected to the input positive end, the second detection end is connected to the input negative end, and the control end is connected to the controlled switch circuit to control the controlled switch circuit to switch on;

[0007] The first communication terminal is used for the electronic device to communicate with the outside.

[0008] In some embodiments, the first communication terminal is located between the input positive terminal and the input negative terminal, and the first communication terminal is used for voltage regulation communication.

[0009] In some embodiments, further comprising a converter;

[0010] The input end of the converter is connected to the output end of the controlled switch circuit.

[0011] In some embodiments, the controlled switch circuit includes a first controlled switch and a second controlled switch;

[0012] The input terminal of the first controlled switch is connected to the input positive terminal;

[0013] An input terminal of the second controlled switch is connected to the input negative terminal.

[0014] In some embodiments, the control end includes a first control end and a second control end;

[0015] The first control terminal is connected to the first controlled switch;

[0016] The second control terminal is connected to the second controlled switch.

[0017] In some embodiments, the first controlled switch is a single-pole multi-throw switch, and / or the second controlled switch is a single-pole multi-throw switch.

[0018] In some embodiments, at least two output terminals of the first controlled switch are respectively connected to the positive and negative input terminals of the converter; and / or

[0019] At least two output terminals of the second controlled switch are respectively connected to the positive and negative electrodes of the input terminal of the converter.

[0020] In some embodiments, the first controlled switch and the second controlled switch are both single-pole triple-throw switches.

[0021] In some embodiments, the first output terminal and the third output terminal of the first controlled switch are connected to the positive input terminal and the negative input terminal of the converter, respectively;

[0022] The first output terminal and the third output terminal of the second controlled switch are connected to the positive input terminal and the negative input terminal of the converter respectively;

[0023] When the control unit detects that the input positive terminal is charged, the control unit controls the first output terminal of the first controlled switch to be connected to the input positive terminal, and the third output terminal of the second controlled switch to be connected to the input negative terminal;

[0024] When the control unit detects that the input negative terminal is charged, the third output terminal of the first controlled switch is controlled to be connected to the input positive terminal, and the first output terminal of the second controlled switch is controlled to be connected to the input negative terminal.

[0025] In some embodiments, when the control unit detects that both the input positive terminal and the input negative terminal are not powered, the second output terminal of the first controlled switch is controlled to be connected to the input positive terminal, and the second output terminal of the second controlled switch is controlled to be connected to the input negative terminal.

[0026] According to a second aspect of an embodiment of the present disclosure, a charging device is provided, comprising a charging circuit as described in any one of the embodiments of the first aspect above.

[0027] According to a third aspect of the embodiments of the present disclosure, there is provided an electronic device, comprising a charging circuit as described in any one of the embodiments of the first aspect above;

[0028] Or include a charging device as described in any embodiment of the second aspect above.

[0029] In some embodiments, further comprising a charging port;

[0030] The pins of the charging port only include the input positive terminal, the first communication terminal and the input negative terminal.

[0031] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: The present disclosure provides a charging circuit, which detects whether the external power source connected to the input positive terminal and the input negative terminal is positively connected or reversely connected by setting a control unit, that is, detects whether the input positive terminal is charged or the input negative terminal is charged; the control unit controls the controlled switch circuit to switch on according to the detection result, so that the external power supply supplies power to the electronic device. The present disclosure effectively reduces the number of pins used to connect to the external power supply, thereby avoiding corrosion and burning caused by dense and large number of pins during high-voltage charging.

[0032] 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

[0033] 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.

[0034] Figure 1 is a structural schematic diagram of a charging circuit according to an exemplary embodiment;

[0035] Figure 2 is a structural diagram showing a forward connection of a charging circuit according to an exemplary embodiment;

[0036] Figure 3 is a structural schematic diagram showing a reverse connection of a charging circuit according to an exemplary embodiment;

[0037] Figure 4 is a schematic structural diagram of a charging device according to an exemplary embodiment;

[0038] Figure 5 is a structural schematic diagram showing a forward connection of a charging device according to an exemplary embodiment;

[0039] Figure 6 The figure is a schematic diagram of a structure of reverse connection of a charging device according to an exemplary embodiment.

[0040] Reference numerals:

[0041] 1. Charging circuit;

[0042] 11. Input positive terminal; 12. First communication terminal; 13. Input negative terminal;

[0043] 14. controlled switch circuit; 141 a first controlled switch; 142 a second controlled switch;

[0044] 15, control unit; 151, first detection terminal; 152, second detection terminal; 153, control terminal; 1531, first control terminal; 1532, second control terminal;

[0045] 16. Converter;

[0046] 2. Power supply circuit;

[0047] 21. Output positive terminal; 22. Second communication terminal; 23. Output negative terminal; 24. Identification module;

[0048] 3. Charging device; 31. PIN1 pin; 32. CC1 pin; 33. PIN2 pin;

[0049] 4. Charging plug; 41. VBUS pin; 42. CC2 pin; 43. GND pin. DETAILED DESCRIPTION

[0050] 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.

[0051] In the related art, some USB interfaces are provided with two rows of pins in order to realize the "positive and negative insertion" function that can be inserted on both sides. The two rows of pins are arranged opposite to each other. In the same direction, the arrangement order of each pin in one row is opposite to the arrangement order of each pin in the other row, that is, the two rows of pins are 180 degrees flipped symmetrically, and matched. The plug is provided with a row of pins, and the arrangement order of each pin in this row of pins matches the arrangement order of one row of pins in the interface. Therefore, when the plug is inserted into the interface, no matter it is inserted forward or backward, there is a unique row of pins in the interface that matches a row of pins in the plug, thereby realizing the "positive and negative insertion" function that can be inserted on both sides. However, this connection method requires a large number of densely arranged pins in the interface, which makes it easy to corrode and burn during high-voltage charging.

[0052] In order to solve the above technical problems, the present disclosure provides a charging circuit, a charging device 3 and an electronic device.

[0053] According to a first aspect of an embodiment of the present disclosure, a charging circuit 1 is provided. Figure 1 As shown, the charging circuit 1 is applied to an electronic device, and comprises: an input positive terminal 11 , an input negative terminal 13 , a controlled switch circuit 14 and a control unit 15 .

[0054] The input positive terminal 11 and the input negative terminal 13 are used to connect to an external power source; the input terminal of the controlled switch circuit 14 is connected to the input positive terminal 11 and the input negative terminal 13 respectively, and the output terminal of the controlled switch circuit 14 is used to power the electronic device; the control unit 15 has a first detection terminal 151, a second detection terminal 152 and a control terminal 153, the first detection terminal 151 is connected to the input positive terminal 11, the second detection terminal 152 is connected to the input negative terminal 13, and the control terminal 153 is connected to the controlled switch circuit 14 to control the controlled switch circuit 14 to switch on. The first communication terminal 12, the first communication terminal 12 is used for the electronic device to communicate with the outside.

[0055] In the embodiment of the present disclosure, when the input positive terminal 11 and the input negative terminal 13 are connected to an external power supply, the control unit 15 detects whether the external power supply to which the input positive terminal 11 and the input negative terminal 13 are connected is positively connected or reversely connected, that is, the first detection terminal 151 detects whether the input positive terminal 11 is charged, and / or the second detection terminal 152 detects whether the input negative terminal 13 is charged; the control unit 15 controls the controlled switch circuit 14 to switch on through the control terminal 153 according to the detection result, so that the external power supply supplies power to the electronic device.

[0056] In the embodiment of the present disclosure, the first communication terminal 12 is located between the input positive terminal 11 and the input negative terminal 13, and the first communication terminal 12 is used for voltage regulation communication.

[0057] In some embodiments, between the electronic device adapted by the present disclosure and the external power supply, the electronic device informs the external power supply through the first communication terminal 12 of the maximum power output supported by the electronic device so that the external power supply can adjust the power transmission accordingly, which helps to avoid overload or incompatibility and provide safer and more efficient charging.

[0058] In the embodiments of the present disclosure, Figure 1 As shown, in the power supply circuit 2 adapted to the present disclosure, an output positive terminal 21 , an output negative terminal 23 and a second communication terminal 22 are provided correspondingly; the second communication terminal 22 is located between the output positive terminal 21 and the output negative terminal 23 .

[0059] In some embodiments, in the charging circuit 1, the arrangement positions of the input positive terminal 11 and the input negative terminal 13 are symmetrical about the center of the first communication terminal 12; and in the power supply circuit 2, the arrangement positions of the output positive terminal 21 and the output negative terminal 23 are symmetrical about the center of the second communication terminal 22. Therefore, whether the charging circuit 1 and the power supply circuit 2 are positively connected (the input positive terminal 11 is connected to the output positive terminal 21, and the input negative terminal 13 is connected to the output negative terminal 23) or reversely connected (the input negative terminal 13 is connected to the output positive terminal 21, and the input positive terminal 11 is connected to the output negative terminal 23), the first communication terminal 12 and the second communication terminal 22 can be connected.

[0060] In some embodiments, an external power supply is provided with a power supply circuit 2 for current output (Source), and an electronic device is provided with current input (Sink). During the charging process, the power supply circuit 2 of the external power supply is connected to the charging circuit 1 of the electronic device, that is, the output positive terminal 21 is connected to the input positive terminal 11, the second communication terminal 22 is connected to the first communication terminal 12, and the output negative terminal 23 is connected to the input negative terminal 13 in the positive connection case, or the output positive terminal 21 is connected to the input negative terminal 13, the second communication terminal 22 is connected to the first communication terminal 12, and the output negative terminal 23 is connected to the input positive terminal 11 in the reverse connection case.

[0061] The power supply circuit 2 is provided with an identification module 24 , which is respectively connected to the output positive terminal 21 and the second communication terminal 22 , and the identification module 24 performs voltage regulation communication with the electronic device via the second communication terminal 22 and the first communication terminal 12 .

[0062] In some embodiments, the identification module 24 may be an Emark chip.

[0063] It should be noted here that although the above embodiment introduces a charging circuit 1 of the present disclosure as a current input (Sink) end, the present disclosure is not limited to this. Those skilled in the art may use a charging circuit 1 of the present disclosure as a current output (Source) end to power other electronic devices according to actual conditions.

[0064] In some embodiments, a converter 16 is further included; the input end of the converter 16 is connected to the output end of the controlled switch circuit 14. The converter 16 is used to adjust the input or output voltage and / or current.

[0065] In the embodiment of the present disclosure, the converter 16 is a DC-DC converter 16 , and the DC-DC converter 16 converts the direct current input from the controlled switch circuit 14 into direct current adapted to the electronic device.

[0066] In the embodiment of the present disclosure, the controlled switch circuit 14 includes a first controlled switch 141 and a second controlled switch 142; the input end of the first controlled switch 141 is connected to the input positive terminal 11; the input end of the second controlled switch 142 is connected to the input negative terminal 13. The first controlled switch 141 and the second controlled switch 142 are respectively set to switch on the input positive terminal 11 and the input negative terminal 13.

[0067] Matchingly, the control end 153 of the control unit 15 includes a first control end 1531 and a second control end 1532; the first control end 1531 is connected to the first controlled switch 141 to control the switching and conduction of the first controlled switch 141; the second control end 1532 is connected to the second controlled switch 142 to control the switching and conduction of the second controlled switch 142.

[0068] In the embodiment of the present disclosure, the first controlled switch 141 is a single-pole multi-throw switch.

[0069] In the embodiment of the present disclosure, the second controlled switch 142 is a single-pole multi-throw switch.

[0070] In some embodiments, at least two output terminals of the first controlled switch 141 are connected to the positive and negative input terminals of the converter 16 , respectively.

[0071] In some embodiments, at least two output terminals of the second controlled switch 142 are respectively connected to the positive and negative input terminals of the converter 16 .

[0072] The control unit 15 controls the switching and conduction of the first controlled switch 141 to connect the output positive terminal 21 to the positive or negative input terminal of the converter 16. Correspondingly, the control unit 15 controls the switching and conduction of the second controlled switch 142 to connect the output negative terminal 23 to the negative or positive input terminal of the converter 16. This enables the external power supply to power the electronic device in either positive or reverse connection.

[0073] In some embodiments, the first controlled switch 141 and the second controlled switch 142 are both single-pole triple-throw switches.

[0074] like Figure 1 As shown, the first output terminal and the third output terminal of the first controlled switch 141 are respectively connected to the positive input terminal and the negative input terminal of the converter 16; the first output terminal and the third output terminal of the second controlled switch 142 are respectively connected to the positive input terminal and the negative input terminal of the converter 16.

[0075] When the second output end of the first controlled switch 141 is connected, the first controlled switch 141 is in an off state; when the second output end of the second controlled switch 142 is connected, the second controlled switch 142 is in an off state.

[0076] When there is no current input to the charging circuit 1, that is, when the control unit 15 detects that both the input positive terminal 11 and the input negative terminal 13 are not powered, the second output terminal of the first controlled switch 141 and the second output terminal of the second controlled switch 142 are controlled to be connected respectively; at this time, the first controlled switch 141 and the second controlled switch 142 are both in the disconnected state, and the input positive terminal 11 and the input negative terminal 13 are both disconnected from the converter 16.

[0077] like Figure 2 and Figure 5 As shown, when the power supply circuit 2 is positively connected to the charging circuit 1, the output positive terminal 21 (VBUS) is connected to the input positive terminal 11, the second communication terminal 22 is connected to the first communication terminal 12, and the output negative terminal 23 (GND) is connected to the input negative terminal 13; wherein, the second communication terminal 22 is connected to the first communication terminal 12 to form a CC channel, and the current output (Source) terminal detects the insertion through the TypeC insertion detection on the CC channel, and powers on the output positive terminal 21. At this time, the control unit 15 detects that the input positive terminal 11 is charged, and controls the first output terminal of the first controlled switch 141 to be connected to the input positive terminal 11, and the third output terminal of the second controlled switch 142 to be connected to the input negative terminal 13; that is, the output positive terminal 21 and the output negative terminal 23 of the power supply circuit 2 are respectively connected to the positive and negative poles of the input terminal of the converter 16, so as to realize power supply to the electronic device.

[0078] like Figure 3 and Figure 6 As shown, when the power supply circuit 2 is reversely connected to the charging circuit 1, the output positive terminal 21 (VBUS) is connected to the input negative terminal 13, the second communication terminal 22 is connected to the first communication terminal 12, and the output negative terminal 23 (GND) is connected to the input positive terminal 11; wherein, the second communication terminal 22 is connected to the first communication terminal 12 to form a CC channel, and the current output (Source) terminal detects the insertion through the TypeC insertion detection on the CC channel, and powers on the output positive terminal 21. At this time, the control unit 15 detects that the input negative terminal 13 is charged, and controls the third output terminal of the first controlled switch 141 to be connected to the input positive terminal 11, and the first output terminal of the second controlled switch 142 to be connected to the input negative terminal 13; that is, the output positive terminal 21 and the output negative terminal 23 of the power supply circuit 2 are respectively connected to the positive and negative poles of the input terminal of the converter 16, so as to realize power supply to the electronic device.

[0079] The control unit 15 performs voltage detection on the input positive terminal 11 and the input negative terminal 13 through the first detection terminal 151 and the second detection terminal 152 respectively to determine whether the input positive terminal 11 is charged or the input negative terminal 13 is charged.

[0080] Therefore, compared with the traditional 24-pin Type-C interface, the present disclosure only needs three pins (input positive terminal 11, first communication terminal 12 and input negative terminal 13) to realize the "positive and negative plugging" function, effectively reducing the number of pins and expanding the interval between pins in a limited space to avoid corrosion and burning caused by a large number of pins due to dense arrangement during high-voltage charging, so as to adapt to the high-voltage charging mode of PD standard 48V. And reduce the manufacturing cost.

[0081] It should be noted here that, although the above embodiment introduces a charging circuit 1 of the present disclosure, which is used to power an adapted electronic device, the present disclosure is not limited thereto, and the present disclosure can have a corresponding data transmission function by adding a data terminal.

[0082] In another embodiment of the present disclosure, a first data positive terminal and a first data negative terminal are further included, and the first data positive terminal and the first data negative terminal are respectively connected to corresponding pins of the electronic device processor through a controlled switch circuit 14. The first data positive terminal and the first data positive terminal are used for data transmission with an external electronic device.

[0083] In another embodiment of the present disclosure, a second data positive terminal and a second data negative terminal are correspondingly provided in the power supply circuit 2 adapted to the present disclosure, and the external electronic device transmits data with the electronic device adapted to the present disclosure through the power supply circuit 2.

[0084] Among them, in the charging circuit 1, the layout positions of the first data positive terminal and the first data negative terminal are symmetrical about the center of the first communication terminal 12; matchingly, in the power supply circuit 2, the layout positions of the second data positive terminal and the second data negative terminal are symmetrical about the center of the second communication terminal 22.

[0085] In some embodiments, in the charging circuit 1, the input positive terminal 11, the first data positive terminal, the first communication terminal 12, the first data negative terminal and the input negative terminal 13 are arranged along a straight line; matchingly, in the power supply circuit 2, the output positive terminal 21, the second data positive terminal, the second communication terminal 22, the second data negative terminal and the output negative terminal 23 are arranged along a straight line.

[0086] In some embodiments, when the control unit 15 detects that the input positive terminal 11 or the input negative terminal 13 is energized, the control unit 15 controls the controlled switch circuit 14 to switch on through the control terminal 153, that is, controls the first data positive terminal and the first data negative terminal to be positively connected or reversely connected to the corresponding two pins of the processor respectively, so that when an external electronic device is connected through the power supply circuit 2, data transmission can be achieved regardless of positive or negative connection.

[0087] In some embodiments, the controlled switch circuit 14 further includes a third controlled switch and a fourth controlled switch; the input end of the third controlled switch is connected to the first data positive terminal; the input end of the fourth controlled switch is connected to the first data negative terminal.

[0088] Matchingly, the control end 153 of the control unit 15 includes a third control end 153 and a fourth control end 153; the third control end 153 is connected to the third controlled switch to control the switching and conduction of the third controlled switch; the fourth control end 153 is connected to the fourth controlled switch to control the switching and conduction of the fourth controlled switch.

[0089] In some embodiments, the third controlled switch is a single-pole multi-throw switch.

[0090] In some embodiments, the fourth controlled switch is a single-pole multi-throw switch.

[0091] Wherein, at least two output terminals of the third controlled switch are respectively connected to two corresponding pins of the processor.

[0092] At least two output ends of the fourth controlled switch are respectively connected to two corresponding pins of the processor.

[0093] In some embodiments, the third controlled switch and the fourth controlled switch are both single-pole triple-throw switches.

[0094] In some embodiments, one of the two corresponding pins of the processor is respectively connected to the first output end of the third controlled switch and the first output end of the fourth controlled switch, and the other of the two corresponding pins of the processor is respectively connected to the third output end of the third controlled switch and the third output end of the fourth controlled switch.

[0095] Therefore, when the power supply circuit 2 is positively connected to the charging circuit 1, that is, the second data positive terminal is connected to the first data positive terminal, and the second data negative terminal is connected to the second data negative terminal, the control unit 15 detects that the input positive terminal 11 is energized, and controls the first output terminal of the third controlled switch to be connected, the third output terminal of the fourth controlled switch to be connected, and the first data positive terminal and the first data negative terminal are positively connected to the corresponding two pins of the processor, respectively, to realize data transmission when positively connected.

[0096] When the power supply circuit 2 is reversely connected to the charging circuit 1, that is, the second data positive terminal is connected to the first data negative terminal, and the second data negative terminal is connected to the second data positive terminal, the control unit 15 detects that the input negative terminal 13 is energized, and controls the third output terminal of the third controlled switch to be connected, the first output terminal of the fourth controlled switch to be connected, and the first data positive terminal and the first data negative terminal are reversely connected to the corresponding two pins of the processor, respectively, to realize data transmission when reversed.

[0097] In some embodiments, when the second output terminal of the third controlled switch is connected, the third controlled switch is in an open state; when the second output terminal of the fourth controlled switch is connected, the fourth controlled switch is in an open state.

[0098] When there is no current input to the charging circuit 1, that is, when the control unit 15 detects that both the input positive terminal 11 and the input negative terminal 13 are not powered, the second output terminal of the third controlled switch and the second output terminal of the fourth controlled switch are controlled to be connected respectively; at this time, the third controlled switch and the fourth controlled switch are both in the disconnected state.

[0099] In some embodiments, the first data positive terminals and the first data negative terminals correspond to each other one by one, and more than two pairs are provided.

[0100] The two or more pairs of first data positive terminals and first data negative terminals are used to transmit at least one of a SuperSpeed ​​differential signal or a USB differential signal.

[0101] The charging circuit 1 of the present application can be applicable to any one of Type-C, Type-A, and Type-B.

[0102] Compared with the two rows of pins in the traditional interface, the present invention only needs to arrange a single row of pins (input positive terminal 11, first data positive terminal, first communication terminal 12, first data negative terminal and input negative terminal 13) to realize the "positive and negative insertion" function, effectively reducing the number of pins and reducing manufacturing costs.

[0103] Based on the same inventive concept, according to a second aspect of an embodiment of the present disclosure, a charging device 3 is provided, comprising: a charging circuit 1 as in any embodiment of the first aspect described above.

[0104] The charging device 3 may be a power adapter.

[0105] Figure 4 It is a structural schematic diagram of a charging device 3 according to an exemplary embodiment, wherein the charging device 3 is provided with a PIN1 pin 31, a CC1 pin 32 and a PIN2 pin 33; the PIN1 pin 31, the CC1 pin 32 and the PIN2 pin 33 are respectively connected to the input positive terminal 11, the first communication terminal 12 and the input negative terminal 13.

[0106] The charging plug 4 matched with the charging device 3 is provided with a VBUS pin 41, a CC2 pin 42 and a GND pin 43; the VBUS pin 41, the CC2 pin 42 and the GND pin 43 are respectively connected to the output positive terminal 21, the second communication terminal 22 and the output negative terminal 23.

[0107] Based on the same inventive concept, according to a third aspect of an embodiment of the present disclosure, there is provided an electronic device, comprising: a charging circuit 1 as in any one of the embodiments of the first aspect described above.

[0108] In some embodiments, the electronic device includes the charging device 3 of any one of the second embodiments described above.

[0109] In some embodiments, the electronic device includes a charging port, and the pins of the charging port only include an input positive terminal 11, a first communication terminal 12, and an input negative terminal 13. Compared with the existing charging port with more pins, the embodiment of the present disclosure includes only three pins, thereby increasing the spacing between the pins in the limited port space, effectively avoiding corrosion and burning of the port, and having a lower cost.

[0110] Among them, the electronic device can be a mobile phone, a computer, a digital broadcast electronic device, a message sending and receiving 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 other wearable devices, etc.

[0111] 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.

[0112] It is further understood that the terms "first", "second", etc. are used to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other, and do not indicate a specific order or degree of importance. In fact, the expressions "first", "second", etc. can be used interchangeably. For example, without departing from the scope of the present disclosure, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information.

[0113] 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.

[0114] 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.

[0115] 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.

[0116] 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 variations, uses or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or customary technical means in the art that are not disclosed in the present disclosure. The specification and examples are to be regarded as exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0117] It should be understood that the present disclosure is not limited to the exact 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 appended claims.

Claims

1. A charging circuit, characterized in that: Used in electronic equipment, including: An input positive terminal and an input negative terminal, wherein the input positive terminal and the input negative terminal are used to connect to an external power source; A controlled switch circuit, wherein the input end of the controlled switch circuit is respectively connected to the input positive terminal and the input negative terminal, and the output end of the controlled switch circuit is used to supply power to the electronic device; A control unit, the control unit having a first detection end, a second detection end and a control end, the first detection end is connected to the input positive end, the second detection end is connected to the input negative end, and the control end is connected to the controlled switch circuit to control the controlled switch circuit to switch on; The first communication terminal is used for the electronic device to communicate with the outside.

2. The charging circuit according to claim 1, characterized in that: The first communication end is located between the input positive terminal and the input negative terminal, and the first communication end is used for voltage regulation communication.

3. The charging circuit according to claim 1, characterized in that: Also includes converters; The input end of the converter is connected to the output end of the controlled switch circuit.

4. The charging circuit according to claim 3, characterized in that: The controlled switch circuit comprises a first controlled switch and a second controlled switch; The input terminal of the first controlled switch is connected to the input positive terminal; An input terminal of the second controlled switch is connected to the input negative terminal.

5. The charging circuit according to claim 4, characterized in that: The control end includes a first control end and a second control end; The first control terminal is connected to the first controlled switch; The second control terminal is connected to the second controlled switch.

6. The charging circuit according to claim 5, characterized in that: The first controlled switch is a single-pole multi-throw switch, and / or the second controlled switch is a single-pole multi-throw switch.

7. The charging circuit according to claim 6, characterized in that: At least two output terminals of the first controlled switch are connected to the positive and negative input terminals of the converter respectively; and / or At least two output terminals of the second controlled switch are respectively connected to the positive and negative electrodes of the input terminal of the converter.

8. The charging circuit according to any one of claims 4 to 7, characterized in that: The first controlled switch and the second controlled switch are both single-pole triple-throw switches.

9. The charging circuit according to claim 8, characterized in that: The first output terminal and the third output terminal of the first controlled switch are connected to the positive input terminal and the negative input terminal of the converter respectively; The first output terminal and the third output terminal of the second controlled switch are connected to the positive input terminal and the negative input terminal of the converter respectively; When the control unit detects that the input positive terminal is charged, the control unit controls the first output terminal of the first controlled switch to be connected to the input positive terminal, and the third output terminal of the second controlled switch to be connected to the input negative terminal; When the control unit detects that the input negative terminal is charged, the third output terminal of the first controlled switch is controlled to be connected to the input positive terminal, and the first output terminal of the second controlled switch is controlled to be connected to the input negative terminal.

10. The charging circuit according to claim 8, characterized in that: When the control unit detects that both the input positive terminal and the input negative terminal are not powered, the second output terminal of the first controlled switch is controlled to be connected to the input positive terminal, and the second output terminal of the second controlled switch is controlled to be connected to the input negative terminal.

11. A charging device, characterized in that: The charging circuit comprises any one of claims 1 to 10.

12. An electronic device, characterized in that: A charging circuit comprising any one of claims 1 to 10; Or including the charging device according to claim 11.

13. The electronic device according to claim 12, characterized in that: Also included is a charging port; The pins of the charging port only include the input positive terminal, the first communication terminal and the input negative terminal.

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