Intelligent charging wire

Abstract

The embodiment of the utility model discloses an intelligent charging wire, which comprises a switch module, a display module and a main control module, and is characterized in that the main control module is connected with the switch module and the display module; wherein the main control module is used for detecting charging parameters and controlling the working state of the switch module and the display state of the display module based on a detection result; the switch module is used for changing the working state according to the control signal of the main control module and controlling the charging current to be conducted or cut off; the display module is used for displaying the charging state based on the detection result of the main control module.

Description

Technical Field

[0001] The utility model relates to the field of intelligent control, in particular to an intelligent charging cable. Background Art

[0002] In the related art, due to the different design standards and manufacturing processes of charging cables, charging cables may sometimes become dangerous due to excessive current and heat. In most cases, users can only detect abnormalities when the charging cable terminals are melted or the mobile phone socket is burned, which can easily cause unnecessary losses. Moreover, when the device is charging, it is difficult for users to intuitively understand the charging status of the device. Utility Model Content

[0003] In view of this, an embodiment of the present invention provides a smart charging cable.

[0004] The technical solution of the utility model embodiment is achieved as follows:

[0005] An embodiment of the present application provides a smart charging cable, which includes: a switch module, a display module and a main control module, wherein the main control module is connected to the switch module and the display module respectively; wherein the main control module is used to detect charging parameters, and control the working state of the switch module and the display state of the display module based on the detection results; the switch module is used to change the working state according to the control signal of the main control module, and control the charging current to be turned on or off; and the display module is used to display the charging state based on the detection result of the main control module.

[0006] In the above scheme, the display module includes: multiple display sub-modules, and the multiple display sub-modules are connected to the main control module; the multiple display sub-modules are used to light up cyclically or turn off completely under the control of the main control module; wherein the number of the display sub-modules that light up cyclically corresponds to the charging parameters under the charging state.

[0007] In the above solution, the smart charging cable further includes: a first port connected to the main control module and the switch module, used to connect to a power source; and a second port connected to the switch module, used to connect to a charging device.

[0008] In the above scheme, the switch module includes: a first switch tube, a second switch tube, a third switch tube, a first resistor and a second resistor; wherein the drain of the first switch tube is connected to the second port, the gate of the first switch tube is connected to the gate of the second switch tube, and the source of the first switch tube is connected to the source of the second switch tube; the drain of the second switch tube is connected to the first port, and the gate of the second switch tube is connected to the drain of the third switch tube; the gate of the third switch tube is connected to one end of the first resistor, and the source of the third switch tube is grounded; the other end of the first resistor is connected to the main control module; one end of the second resistor is grounded, and the other end of the second resistor is connected to the source of the third switch tube.

[0009] In the above scheme, the first port and the second port include multiple communication pins; the smart charging cable also includes: a protocol identification module; the protocol identification module is respectively connected to the multiple communication pins of the first port, the multiple communication pins of the second port and the main control module, and is used to identify the charging protocol of the power source and the charging device, and send the protocol identification result to the main control module.

[0010] In the above solution, the main control module is also used to control the switch module to change the working state so as to cut off the charging current when it is detected that the charging parameter is greater than the charging parameter specified in the charging protocol.

[0011] In the above solution, the display module also includes: multiple current limiting resistors, each display submodule corresponds to a current limiting resistor; one end of each current limiting resistor is connected to the corresponding display submodule, and the other end of each current limiting resistor is connected to the main control module.

[0012] In the above solution, the smart charging cable also includes:

[0013] A power supply module, the power supply module comprising: a first transistor, a second transistor, a third transistor, a third resistor, a first capacitor, a second capacitor and a power supply chip; wherein the negative electrode of the first transistor is connected to the negative electrode of the second transistor, and the positive electrode of the first transistor is connected to the second port; the negative electrode of the second transistor is connected to one end of the third resistor, and the positive electrode of the second transistor is connected to the first port; the other end of the third resistor is connected to the input pin of the power supply chip; one end of the first capacitor is connected to the input pin of the power supply chip, and the other end of the first capacitor is grounded; the ground pin of the power supply chip is grounded, and the output pin of the power supply chip is connected to the positive electrode of the third transistor, and the power supply chip is used to power the main control module and the protocol identification module;

[0014] One end of the second capacitor is connected to the positive electrode of the third transistor, and the other end of the second capacitor is grounded; the negative electrode of the third transistor is connected to the main control module and the protocol identification module.

[0015] In the above solution, the smart charging cable includes a plurality of second ports, and the display module is further used to display the charging status of the plurality of second ports.

[0016] In the above solution, the first port and the second port are Universal Serial Bus USB interfaces.

[0017] The smart charging cable provided by the embodiment of the utility model includes: a switch module, a display module and a main control module, and the main control module is connected to the switch module and the display module respectively. Among them, the main control module is used to detect the charging parameters, and control the working state of the switch module and the display state of the display module based on the detection results. The switch module is used to change the working state according to the control signal of the main control module, and control the charging current to be turned on or off. The display module is used to display the charging status based on the detection results of the main control module. The embodiment of the utility model detects the charging parameters through the main control module on the charging line, controls the on and off of the switch module based on this, and cuts off the power when the charging parameters are abnormal, which can improve the safety of the use of the charging line. And the main control module can also control the display module to display the charging status of the device in real time, so that the user can intuitively understand the charging status of the device, which improves the user's experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings herein are incorporated into the specification and constitute a part of the specification. These drawings illustrate embodiments consistent with the present application and are used together with the specification to illustrate the technical solution of the present application.

[0019] Figure 1 A schematic diagram of the structure of a smart charging cable provided by an embodiment of the utility model;

[0020] Figure 2 A schematic diagram of the structure of a smart charging cable provided by an embodiment of the utility model;

[0021] Figure 3 A schematic diagram of the structure of a smart charging cable provided by an embodiment of the utility model;

[0022] Figure 4 A schematic diagram of the structure of a smart charging cable provided by an embodiment of the utility model;

[0023] Figure 5 A schematic diagram of the structure of a smart charging cable provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0024] In order to make the purpose, design and advantages of the present application clearer, the design of the present application is further elaborated in detail below in conjunction with the drawings and embodiments. The described embodiments should not be regarded as limiting the present application. All other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of this application.

[0025] In the following description, reference is made to "some embodiments", which describe a subset of all possible embodiments, but it is understood that "some embodiments" may be the same subset or different subsets of all possible embodiments, and may be combined with each other without conflict. The terms "first / second" are merely used to distinguish similar objects and do not represent a specific ordering of the objects. It is understood that "first / second" may be interchanged with a specific order or sequence where permitted, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein are only for the purpose of describing this application and are not intended to limit this application.

[0027] In the related art, due to the different design standards and manufacturing processes of charging cables, charging cables may sometimes generate heat due to excessive current and become dangerous. In most cases, users can only detect abnormalities when the charging cable terminals are melted or the mobile phone socket is burned, which can easily cause unnecessary losses. Moreover, when the device is charging, it is difficult for users to intuitively understand the charging status of the device.

[0028] In view of this, the utility model designs an intelligent charging cable, which can cut off the power in time when an abnormality occurs in the charging cable, improve the safety of the charging cable, and display the charging status and charging parameters of the device in real time to enhance the user experience.

[0029] Figure 1 This is a schematic diagram of the structure of a smart charging cable provided by an embodiment of the utility model. Figure 1 As shown, the smart charging cable 1 includes:

[0030] A switch module 13, a display module 12 and a main control module 11, wherein the main control module 11 is connected to the switch module 13 and the display module 12 respectively; wherein,

[0031] The main control module 11 is used to detect charging parameters and control the working state of the switch module 13 and the display state of the display module 12 based on the detection results;

[0032] The switch module 13 is used to change the working state according to the control signal of the main control module 11, and control the charging current to be turned on or off;

[0033] The display module 12 is used to display the charging status based on the detection result of the main control module 11 .

[0034] In some embodiments, the above-mentioned smart charging cable can charge electronic devices such as laptops, mobile phones, tablet computers, etc., and can also be used as a data transmission cable.

[0035] In some embodiments, the main control module 11 may be a central processing unit (CPU), a digital signal processor (DSP), a microcontroller unit (MCU) or a field-programmable gate array (FPGA).

[0036] In some embodiments, the charging parameters detected by the main control module 11 may include the charging voltage and the charging current. Based on the charging parameters, the main control module 11 can determine whether the current charging state is abnormal. When the charging voltage or the charging current is too large, the switch module 13 is controlled to change the working state to cut off the charging current. During normal charging, the switch module is controlled to maintain a working state that allows current to flow.

[0037] In some embodiments, when the charging device is connected to the smart charging cable for charging, the main control module 11 can control the display module to change the display state according to the detected charging parameters to reflect the current charging state of the electronic device. The charging state may include the charging voltage value, whether it is fully charged, and whether it is charging, etc. The display module can display different charging states by flashing, always on, and off.

[0038] In some embodiments, the display module 12 may be a light-emitting array composed of a plurality of light-emitting diodes, and the main control module 11 controls the light-emitting state of the light-emitting diodes based on the real-time charging state. For example, if the current charging voltage is 5V, 5 light-emitting diodes may be controlled to light up in a cycle to indicate that charging is in progress. For another example, if the electronic device is fully charged at this time, all light-emitting diodes may be turned off. In some examples, the display module 12 may also be a display screen, and the words "charging, charging voltage 5V" or "charged" may be displayed on the display screen to indicate the charging state. Furthermore, since the main reason for the heating of the charging line is excessive current, the main control module 11 may determine whether the current charging state is abnormal based on the charging current in the charging parameters. Generally, the charging current will not exceed the charging current specified in the charging protocol. For example, the charging protocol specifies that the charging parameter is 5V / 2A. If the charging current reaches 5A at this time, it obviously exceeds the charging current specified in the charging protocol. At this time, the main control module will control the switch module 13 to cut off the charging current to avoid danger or damage to the charging device.

[0039] The smart charging cable provided by the embodiment of the utility model includes: a switch module, a display module and a main control module, and the main control module is connected to the switch module and the display module respectively. Among them, the main control module is used to detect the charging parameters, and control the working state of the switch module and the display state of the display module based on the detection results. The switch module is used to change the working state according to the control signal of the main control module, and control the charging current to be turned on or off. The display module is used to display the charging state based on the detection results of the main control module. The embodiment of the utility model detects the charging parameters through the main control module on the charging line, controls the on and off of the switch module based on this, and cuts off the power when the charging parameters are abnormal, which can improve the safety of the use of the charging line. And the main control module can also control the display module to display the charging status of the device in real time, so that the user can intuitively understand the charging status of the device, which improves the user's experience.

[0040] Figure 2 A schematic diagram of the structure of a smart charging cable provided by an embodiment of the utility model is shown in FIG. Figure 2 shown.

[0041] In some embodiments, the display module 12 includes: multiple display sub-modules, and the multiple display sub-modules are connected to the main control module 11; the multiple display sub-modules are used to cyclically light up or turn off under the control of the main control module; wherein the number of the display sub-modules that are cyclically lit corresponds to the charging parameters under the charging state.

[0042] In some embodiments, the display submodule can be a light-emitting diode, a display screen, or other device that can emit light or be used for display, and the main control module 11 can control the display state of the display submodule by changing the output voltage to the display submodule. Exemplarily, for example, when the charging voltage is 5V, the main control module can output five high-level signals correspondingly to control the five display submodules to light up respectively. Specifically, the output high-level signal can also be changed to a periodic pulse wave to achieve the effect of cyclic lighting of the five display submodules. In some cases, when the electronic device is fully charged, the main control module 11 can control all the display submodules to turn off. It can be understood that when the electronic device is fully charged, it will enter the trickle charging mode, and the charging current will become smaller. Based on this, the main control module can determine the charging mode of the electronic device, and whether it is fully charged / charging, and can also determine whether the device is fully charged by other means.

[0043] Based on the above embodiments, by displaying the charging status of the electronic device through a plurality of display submodules, the user can intuitively understand the charging status of the electronic device, thereby improving the user's usage experience.

[0044] Figure 3 A schematic diagram of the structure of a smart charging cable provided by an embodiment of the utility model is shown in FIG. Figure 3 shown.

[0045] In some embodiments, the smart charging cable 1 further includes:

[0046] The first port 2 connected to the main control module 11 and the switch module 13 is used to connect to the power supply 4;

[0047] The second port 3 connected to the switch module 13 is used to connect a charging device 5 .

[0048] In some embodiments, the power source 4 can be an electronic device that can provide charging function, such as a power adapter plug, a mobile power supply, etc., and the charging device 5 can be an electronic device that can be charged, such as a mobile phone, a tablet computer, etc. In some cases, some electronic devices have the function of charging other devices and charging through other devices at the same time, so the above-mentioned power source 4 and the charging device 5 can also be the same type of electronic devices, which is not specifically limited here.

[0049] In some embodiments, the first port 2 and the second port 3 can be Universal Serial Bus (USB) interfaces (including USB-A, USB-B and USB-C), or other types of interfaces. In one case, multiple second ports 3 can be set to meet the needs of charging multiple electronic devices at the same time.

[0050] Based on the above embodiments, multiple ports can be provided to charge multiple devices simultaneously, thereby improving the user experience.

[0051] Figure 4 A schematic diagram of the structure of a smart charging cable provided in an embodiment of the present application is shown in FIG. Figure 4 shown.

[0052] In some embodiments, the switch module comprises:

[0053] A first switch tube Q1, a second switch tube Q2, a third switch tube Q3, a first resistor R1 and a second resistor R2; wherein,

[0054] The drain of the first switch tube Q1 is connected to the second port (V2+ pin), the gate of the first switch tube Q1 is connected to the gate of the second switch tube Q2, and the source of the first switch tube Q1 is connected to the source of the second switch tube Q2;

[0055] The drain of the second switch tube Q2 is connected to the first port (V1+ pin), and the gate of the second switch tube Q2 is connected to the drain of the third switch tube Q3;

[0056] The gate of the third switch tube Q3 is connected to one end of the first resistor R1, and the source of the third switch tube Q3 is grounded;

[0057] The other end of the first resistor R1 is connected to the main control module U2;

[0058] One end of the second resistor R2 is grounded, and the other end of the second resistor R2 is connected to the source of the third switch tube Q3.

[0059] In some embodiments, the first switch tube Q1, the second switch tube Q2 and the third switch tube Q3 can be metal-oxide-semiconductor field-effect transistors (MOSFET), and the first resistor R1 is connected to pin 3 of the main control module U2. The main control module U2 controls the conduction state of the first switch tube Q1, the second switch tube Q2 and the third switch tube Q3 by changing the level of the output of pin 2 to achieve control of the conduction or cutoff of the charging current.

[0060] Based on the above embodiment, a switch module is mainly composed of multiple switch tubes. The conduction state of the switch tube is changed by receiving the high and low levels sent by the main control module to control the on and off of the charging current. The user does not need to operate by himself, and the on and off control of the charging current can be automatically realized, thereby improving the user experience.

[0061] In some embodiments, the first port and the second port include a plurality of communication pins; the smart charging cable further includes: a protocol identification module;

[0062] The protocol identification module is respectively connected to the multiple communication pins of the first port, the multiple communication pins of the second port and the main control module, and is used to identify the charging protocol of the power source and the charging device, and send the protocol identification result to the main control module.

[0063] In some embodiments, Figure 4 As shown, the first port includes multiple communication pins including V1+, CC2, D- and D+, and the second port includes multiple communication pins including V2+, DP, DM and CC1. Pins 3, 4, 5, 6, 7 and 8 of the protocol identification module U1 are respectively connected to the V1+, CC2, D- and D+ pins of the first port and the V2+, DP, DM and CC1 pins of the second port. The protocol identification module identifies the charging protocol between the power supply and the charging device by connecting to the multiple communication pins of the first port and the second port, and sends the identification result to pin 13 of the main control chip through pin 10.

[0064] In some embodiments, the identification results mainly include charging parameters such as charging voltage, charging power and charging current specified in the charging protocol. The main control module U2 can determine whether the charging status is abnormal based on the identification results and the charging parameters detected in real time. If the charging status is abnormal, the switch module can be controlled to be cut off to stop charging.

[0065] Based on the above embodiment, the charging protocol of the power source and the charging device is identified through the protocol identification module, and the identification result is sent to the main control module. The main control module can flexibly determine whether the charging status is abnormal according to different charging devices, so that the smart charging cable has stronger versatility and can be adapted to a variety of devices, thereby improving the user experience.

[0066] In some embodiments, the main control module is used to control the switch module to change the working state so as to cut off the charging current when it is detected that the charging parameter is greater than the charging parameter specified in the charging protocol.

[0067] In some embodiments, the charging parameters may include charging voltage, charging current, charging power, etc. When the main control module detects that the real-time charging parameters are greater than the charging parameters specified in the charging protocol, it indicates that the charging state is abnormal, such as short circuit, overload, etc. At this time, the main control module controls the switch module to change the working state and enter the cut-off state, so that the charging current is cut off and the charging process is interrupted.

[0068] Based on the above embodiment, when the real-time charging parameter is greater than the charging parameter specified in the protocol, it can be considered that the charging state is abnormal, and the main control module intervenes in the charging and terminates the charging to avoid danger, thereby improving the safety of the smart charging cable.

[0069] In some embodiments, the display module further includes:

[0070] A plurality of current limiting resistors, each display submodule corresponds to a current limiting resistor; one end of each current limiting resistor is connected to the corresponding display submodule, and the other end of each current limiting resistor is connected to the main control module.

[0071] In some embodiments, Figure 4 As shown, the display submodule includes a first display submodule D3, a second display submodule D4, a third display submodule D5, a fourth display submodule D6, a fifth display submodule D7, a sixth display submodule D8, a seventh display submodule D9, an eighth display submodule D10 and a ninth display submodule D11, and the current limiting resistor includes a first current limiting resistor R4, a second current limiting resistor R4, a third current limiting resistor R4, a fourth current limiting resistor R4 and a fifth current limiting resistor R4.

[0072] Among them, the negative poles of the first display submodule D3 and the third display submodule D5 are connected to pin 4 of the main control module, the positive pole of the first display submodule D3 is connected to one end of the first current limiting resistor R4, the positive pole of the third display submodule D5 is connected to one end of the second current limiting resistor R5, the positive poles of the second display submodule D4 and the fourth display submodule D6 are connected to pin 4 of the main control module, the negative pole of the second display submodule D4 is connected to one end of the first current limiting resistor R4, the negative pole of the fourth display submodule D6 is connected to one end of the second current limiting resistor R5, the other end of the first current limiting resistor R4 is connected to pin 5 of the main control module, and the other end of the second current limiting resistor R5 is connected to pin 6 of the main control module.

[0073] The negative poles of the fifth display submodule D7 and the seventh display submodule D9 are connected to pin 8 of the main control module, the positive pole of the fifth display submodule D7 is connected to one end of the third current limiting resistor R6, the positive pole of the seventh display submodule D9 is connected to one end of the fourth current limiting resistor R7, the positive poles of the sixth display submodule D8 and the eighth display submodule D10 are connected to pin 8 of the main control module, the negative pole of the sixth display submodule D8 is connected to one end of the third current limiting resistor R6, the negative pole of the eighth display submodule D10 is connected to one end of the fourth current limiting resistor R7, the other end of the third current limiting resistor R6 is connected to pin 7 of the main control module, and the other end of the fourth current limiting resistor R7 is connected to pin 9 of the main control module.

[0074] The cathode of the tenth display submodule D11 is grounded, the anode of the tenth display submodule D11 is connected to the fifth current limiting resistor R8, and the other end of the fifth current limiting resistor R8 is connected to the pin 10 of the main control module.

[0075] In some embodiments, the main control chip can send a control signal through pins 4 to 10 to control the display state of the above-mentioned display sub-unit. Specifically, the control signal can be a periodic pulse signal. In practical applications, the number of display sub-modules can be changed according to needs. The connection method can refer to the above-mentioned embodiments and Figure 4 The connection method shown in .

[0076] Based on the above embodiments, the charging status of the electronic device can be displayed more accurately through multiple display sub-modules, so that the user can understand the charging status of the electronic device in more detail, thereby improving the user's usage experience.

[0077] like Figure 4 As shown, in some embodiments, the smart charging cable further includes:

[0078] A power supply module, the power supply module comprising: a first transistor D1, a second transistor D2, a third transistor D3, a third resistor R3, a first capacitor C1, a second capacitor C2 and a power supply chip U3; wherein,

[0079] The cathode of the first transistor D1 is connected to the cathode of the second transistor D2, and the anode of the first transistor D1 is connected to the second port (V2+ pin);

[0080] The cathode of the second transistor D2 is connected to one end of the third resistor R3, and the anode of the second transistor D2 is connected to the first port (V1+ pin);

[0081] The other end of the third resistor R3 is connected to the input pin of the power chip U3;

[0082] One end of the first capacitor C1 is connected to the input pin of the power chip U3, and the other end of the first capacitor C1 is grounded;

[0083] The ground pin of the power chip U3 is grounded, the output pin of the power chip U3 is connected to the positive electrode of the third transistor D12, and the power chip U3 is used to power the main control module U2 and the protocol identification module U1;

[0084] One end of the second capacitor C2 is connected to the positive electrode of the third transistor D3, and the other end of the second capacitor C2 is grounded;

[0085] The cathode of the third transistor D12 is connected to the main control module U2 and the protocol identification module U1.

[0086] like Figure 4As shown, the positive electrode of the first transistor D1 is connected to the V2+ pin in the second port, and the negative electrode of the first transistor D1 is connected to one end of the third resistor R3. The positive electrode of the second transistor D2 is connected to the V1+ pin in the first port, the negative electrode of the second transistor is connected to one end of the third resistor R3, and the other end of the third resistor R3 is connected to the input end (3 pin) of the power chip U3. One end of the first capacitor C1 is connected to the input end (3 pin) of the power chip U3, and the other end is grounded. The ground pin (1 pin) of the power chip is grounded, the input pin (2 pin) is connected to the positive electrode of the third transistor D12, and the negative electrode of the third transistor D12 is connected to one pin of the main control module U2 and the protocol identification module U1. One end of the third capacitor C3 is connected to the output end (3 pin) of the power chip U3, and the other end is grounded. The above-mentioned first transistor D1, the second transistor D2 and the third transistor D3 can be diodes, or other components with single-phase conduction characteristics. The above-mentioned power chip U3 can convert the electricity of the power supply and electronic equipment into electricity that can be used by the main control module and the protocol identification module.

[0087] Based on the above embodiment, a power module is added inside the smart charging cable, and the power of the power supply and the electronic device during the charging process can be used to power the entire smart charging cable, without the need for additional batteries or other power storage devices, which is more convenient to use.

[0088] Figure 5 A schematic diagram of the structure of a smart charging cable provided by an embodiment of the utility model is shown in FIG. Figure 5 shown.

[0089] In some embodiments, the smart charging cable includes a plurality of second ports, and the display module 12 is further used to display the charging status of the plurality of second ports.

[0090] In some embodiments, when there are multiple second ports, the display module 12 may use a display screen to simultaneously display the charging status of all the second ports, and in some cases may also use a scrolling display to display the charging status of multiple second ports.

[0091] In some embodiments, the display module 12 includes a plurality of display sub-modules, each second port corresponds to a display sub-module, and each display sub-module can display the charging status of the corresponding second port.

[0092] In some embodiments, the first port and the second port are Universal Serial Bus (USB) interfaces.

[0093] In some embodiments, the interface types of the first port and the second port may be different. For example, the first port may be a USB-A interface and the second port may be a USB-C interface. Alternatively, a plurality of first ports and second ports of different types may be provided.

[0094] It should be noted that, for the description of the same contents in this embodiment and other embodiments, reference can be made to the description in other embodiments and will not be repeated here.

[0095] In this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device that includes the element.

[0096] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course can also be implemented by hardware, but in most cases the former is a better implementation method. Based on such an understanding, the technical solution of the utility model in essence or the part of the contribution made to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), including a number of instructions for a terminal device (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods described in each embodiment of the utility model.

[0097] The present invention is described with reference to the flowcharts and / or block diagrams of the methods, devices, and computer program products according to the embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of the processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0098] In addition, in the examples of the present application, "first", "second", etc. are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0099] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A smart charging cable, characterized in that: The smart charging cable includes: a switch module, a display module and a main control module, and the main control module is connected to the switch module and the display module respectively; wherein, The main control module is used to detect charging parameters and control the working state of the switch module and the display state of the display module based on the detection result; The switch module is used to change the working state according to the control signal of the main control module, and control the charging current to be turned on or off; The display module is used to display the charging status based on the detection result of the main control module.

2. The smart charging cable according to claim 1, characterized in that: The display module comprises: A plurality of display submodules, wherein the plurality of display submodules are connected to the main control module; The plurality of display submodules are used to light up or turn off cyclically under the control of the main control module; wherein the number of the display submodules that light up cyclically corresponds to the charging parameters under the charging state.

3. The smart charging cable according to claim 1, characterized in that: The smart charging cable also includes: A first port connected to the main control module and the switch module, used for connecting a power source; The second port connected to the switch module is used to connect a charging device.

4. The smart charging cable according to claim 3, characterized in that: The switch module comprises: a first switch tube, a second switch tube, a third switch tube, a first resistor and a second resistor; wherein, The drain of the first switch tube is connected to the second port, the gate of the first switch tube is connected to the gate of the second switch tube, and the source of the first switch tube is connected to the source of the second switch tube; The drain of the second switch tube is connected to the first port, and the gate of the second switch tube is connected to the drain of the third switch tube; The gate of the third switch tube is connected to one end of the first resistor, and the source of the third switch tube is grounded; The other end of the first resistor is connected to the main control module; One end of the second resistor is grounded, and the other end of the second resistor is connected to the source of the third switch tube.

5. The smart charging cable according to claim 3, characterized in that: The first port and the second port include a plurality of communication pins; the smart charging cable further includes: a protocol identification module; The protocol identification module is respectively connected to the multiple communication pins of the first port, the multiple communication pins of the second port and the main control module, and is used to identify the charging protocol of the power source and the charging device, and send the protocol identification result to the main control module.

6. The smart charging cable according to claim 5, characterized in that: The main control module is further configured to control the switch module to change the working state so as to cut off the charging current when it is detected that the charging parameter is greater than the charging parameter specified in the charging protocol.

7. The smart charging cable according to claim 2, characterized in that: The display module further includes: A plurality of current limiting resistors, each display submodule corresponds to a current limiting resistor; one end of each current limiting resistor is connected to the corresponding display submodule, and the other end of each current limiting resistor is connected to the main control module.

8. The smart charging cable according to claim 3, characterized in that: The smart charging cable also includes: A power module, the power module comprising: a first transistor, a second transistor, a third transistor, a third resistor, a first capacitor, a second capacitor and a power chip; wherein, The cathode of the first transistor is connected to the cathode of the second transistor, and the anode of the first transistor is connected to the second port; The cathode of the second transistor is connected to one end of the third resistor, and the anode of the second transistor is connected to the first port; The other end of the third resistor is connected to the input pin of the power chip; One end of the first capacitor is connected to the input pin of the power chip, and the other end of the first capacitor is grounded; The ground pin of the power chip is grounded, the output pin of the power chip is connected to the positive electrode of the third transistor, and the power chip is used to supply power to the main control module and the protocol identification module; One end of the second capacitor is connected to the positive electrode of the third transistor, and the other end of the second capacitor is grounded; The cathode of the third transistor is connected to the main control module and the protocol identification module.

9. The smart charging cable according to claim 3, characterized in that: The smart charging cable includes a plurality of second ports, and the display module is further used to display the charging status of the plurality of second ports.

10. The smart charging cable according to claim 3, characterized in that: The first port and the second port are Universal Serial Bus (USB) interfaces.

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