Charging abnormality detection circuit and charging abnormality detection method

Abstract

The present application provides a charging abnormality detection circuit and a charging abnormality detection method. The charging abnormality detection circuit is configured in a first electronic device, and includes an image processing unit and a power transmission unit. The power transmission unit is electrically connected to the image processing unit. The power transmission unit is configured to provide a charging process performed by the first electronic device on a second electronic device, and detect whether the charging process has an abnormality. In response to the power transmission unit detecting an abnormal charging condition during the charging process, the power transmission unit is configured to generate and store a charging abnormality record.

Description

Technical Field

[0001] This invention relates to a charging circuit and a charging method, and more particularly to a charging circuit and a charging method for monitoring whether abnormal conditions occur during the charging process. Background Technology

[0002] Whether for work or entertainment, the time spent using electronic products is showing a significant upward trend. Therefore, whether electronic products support fast charging has become an important factor for consumers to consider when purchasing them.

[0003] The latest Universal Serial Bus (USB) features Power Delivery (PD), allowing users to connect two electronic devices using a USB port and cable to charge the other. However, if overcharging occurs, the user is unaware of the error, and continued use of the device can lead to permanent damage.

[0004] Therefore, it is necessary to design a new charging circuit and charging method to monitor whether abnormal conditions occur during the charging process, in order to overcome the above-mentioned defects. Summary of the Invention

[0005] The purpose of this invention is to provide a charging anomaly detection circuit and a charging anomaly detection method in light of the prior art.

[0006] To achieve the above objectives, the present invention provides a charging anomaly detection circuit, configured in a first electronic device, the anomaly detection circuit comprising: an image processing unit; and

[0007] A power transmission unit is electrically connected to the image processing unit. The power transmission unit is configured to provide the charging process of the first electronic device to the second electronic device and to detect whether the charging process is abnormal.

[0008] In response to an abnormal charging condition detected by the power transmission unit during the charging process, the power transmission unit is configured to generate and store a charging abnormality record.

[0009] Preferably, the image processing unit is configured to acquire and store the charging anomaly record from the power transmission unit, and to display the charging anomaly record via a menu on the screen of the first electronic device and / or a display operation interface of the second electronic device.

[0010] Preferably, the power transmission unit includes a register for storing the charging anomaly record, and the image processing unit is configured to retrieve and store the charging anomaly record from the register.

[0011] Preferably, the image processing unit sends instructions based on a display data channel command interface to transmit the abnormal charging record to the second electronic device and display the abnormal charging record according to the request instruction of the second electronic device.

[0012] Preferably, the power transmission unit includes a control unit, a voltage detection unit, and a current detection unit;

[0013] The control unit is electrically connected to the voltage detection unit and the current detection unit. The voltage detection unit is configured to detect the charging voltage during the charging process to generate a voltage detection signal, and the current detection unit is configured to detect the charging current during the charging process to generate a current detection signal.

[0014] The control unit is configured to determine whether the voltage detection signal is greater than the voltage threshold. When the voltage detection signal is greater than the voltage threshold, the control unit determines that the charging abnormality has occurred and generates a voltage abnormality record.

[0015] The control unit is also configured to determine whether the current detection signal is greater than the current threshold. When the current detection signal is greater than the current threshold, the control unit determines that the charging abnormality has occurred and generates a current abnormality record, wherein the charging abnormality record includes the voltage abnormality record and the current abnormality record.

[0016] Preferably, the power transmission unit further includes a control unit, a temperature detection unit, and a short-circuit detection unit; the control unit is electrically connected to the temperature detection unit and the short-circuit detection unit.

[0017] The temperature detection unit is configured to detect the temperature during the charging process to generate a temperature detection signal. The control unit is configured to determine whether the temperature detection signal is greater than a temperature threshold. When the temperature detection signal is greater than the temperature threshold, the control unit determines that an abnormal charging condition has occurred and generates a temperature abnormality record.

[0018] The short circuit detection unit is configured to detect whether a short circuit occurs during the charging process of the first electronic device to the second electronic device. When the short circuit detection unit detects a short circuit during the charging process, the control unit determines that the charging abnormality has occurred and generates a short circuit abnormality record, wherein the charging abnormality record also includes the temperature abnormality record and the short circuit abnormality record.

[0019] Preferably, the charging anomaly detection circuit further includes an electrical connection unit and a protection unit. The electrical connection unit is electrically connected to the second electronic device via a charging cable, and the protection unit is electrically connected between the electrical connection unit and the power transmission unit.

[0020] When an abnormal charging condition occurs during the charging process, the protection unit transmits a charging abnormality signal to the power transmission unit.

[0021] Preferably, the charging anomaly detection circuit further includes a wireless charging transmitter and a protection unit, and the second electronic device includes a wireless charging receiver.

[0022] The wireless charging transmitter and the wireless charging receiver communicate via a resonant wireless transmission mechanism during the charging process. The protection unit is electrically connected to the wireless charging transmitter and the power transmission unit. When an abnormal charging condition occurs during the charging process, the protection unit transmits a charging abnormality signal to the power transmission unit.

[0023] To achieve the above objectives, the present invention provides a charging anomaly detection method, applied to a first electronic device, the charging anomaly detection method comprising:

[0024] The charging process of the first electronic device to the second electronic device is monitored through the power transmission unit; and

[0025] In response to the power transmission unit detecting an abnormal charging condition during the charging process, the power transmission unit generates and stores a charging abnormality record.

[0026] Preferably, the charging anomaly detection method further includes: acquiring and storing the charging anomaly record from the power transmission unit through the image processing unit, and displaying the charging anomaly record through a menu on the screen of the first electronic device and / or the display operation interface of the second electronic device.

[0027] Preferably, the power transmission unit includes a register for storing the charging anomaly record, and the charging anomaly record is retrieved from the register by an image processing unit.

[0028] Preferably, the charging anomaly detection method further includes: sending an instruction through an image processing unit based on a display data channel / command interface, so as to transmit the abnormal charging record to the second electronic device according to the request instruction of the second electronic device, and the second electronic device displays the abnormal charging record.

[0029] Preferably, the power transmission unit monitors the charging process by:

[0030] The voltage detection unit of the power transmission unit detects the charging voltage during the charging process to generate a voltage detection signal; the current detection unit of the power transmission unit detects the charging current during the charging process to generate a current detection signal.

[0031] The control unit of the power transmission unit determines whether the voltage detection signal is greater than a voltage threshold. When the voltage detection signal is greater than the voltage threshold, the control unit determines that a charging abnormality has occurred and generates a voltage abnormality record. The control unit also determines whether the current detection signal is greater than a current threshold. When the current detection signal is greater than the current threshold, the control unit determines that a charging abnormality has occurred and generates a current abnormality record, wherein the charging abnormality record includes both the voltage abnormality record and the current abnormality record.

[0032] Preferably, the power transmission unit monitoring the charging process further includes:

[0033] The temperature detection unit of the power transmission unit detects the temperature during the charging process to generate a temperature detection signal; the control unit of the power transmission unit determines whether the temperature detection signal is greater than a temperature threshold; when the temperature detection signal is greater than the temperature threshold, the control unit determines that an abnormal charging condition has occurred and generates a temperature abnormality record.

[0034] The short circuit detection unit of the power transmission unit detects whether a short circuit occurs during the charging process; when a short circuit occurs during the charging process, the control unit determines that the charging abnormality has occurred and generates a short circuit abnormality record, wherein the charging abnormality record also includes the temperature abnormality record and the short circuit abnormality record.

[0035] Preferably, the first electronic device performs the charging process on the second electronic device via an electrical connection unit and a charging cable;

[0036] When an abnormal charging condition occurs during the charging process, the protection unit of the first electronic device transmits a charging abnormality signal to the power transmission unit.

[0037] Preferably, the charging process is carried out between the first electronic device and the second electronic device via a resonant wireless transmission mechanism;

[0038] When an abnormal charging condition occurs during the charging process, the protection unit of the first electronic device transmits a charging abnormality signal to the power transmission unit.

[0039] Compared with existing technologies, the charging anomaly detection circuit and method provided by this invention allow the user to be aware of any abnormalities during the charging process of an electronic device. When the user detects an abnormality, they can immediately stop the charging process to prevent damage to the electronic device. Attached Figure Description

[0040] Figure 1 This is a functional block diagram of a first embodiment of the charging anomaly detection circuit of the present invention;

[0041] Figure 2 This is a functional block diagram of a second embodiment of the charging anomaly detection circuit of the present invention;

[0042] Figure 3 This is a functional block diagram of a third embodiment of the charging anomaly detection circuit of the present invention;

[0043] Figure 4 This is a functional block diagram of a fourth embodiment of the charging anomaly detection circuit of the present invention;

[0044] Figure 5 This is a functional block diagram of the fifth embodiment of the charging anomaly detection circuit of the present invention;

[0045] Figure 6 This is a functional block diagram of the sixth embodiment of the charging anomaly detection circuit of the present invention;

[0046] Figure 7 This is a flowchart of the first embodiment of the charging anomaly detection method of the present invention;

[0047] Figure 8 This is a flowchart of a second embodiment of the charging anomaly detection method of the present invention. Detailed Implementation

[0048] To provide a further understanding of the purpose, structure, features, and functions of the present invention, detailed descriptions are provided below with reference to specific embodiments.

[0049] Certain terms are used in the specification and claims to refer to specific elements. It will be understood by those skilled in the art that manufacturers may use different names to refer to the same element. This specification and claims do not distinguish elements by differences in name, but rather by differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to".

[0050] It should be understood that while terms such as "first," "second," and "third" may be used in this document to describe various components or signals, these components or signals should not be limited by these terms. These terms are primarily used to distinguish one component from another, or one signal from another. Furthermore, the term "or" as used herein should, as appropriate, include any combination of one or more of the associated listed items.

[0051] Figure 1 This is a functional block diagram of a first embodiment of the charging anomaly detection circuit of the present invention. See also... Figure 1 The charging anomaly detection circuit is configured in the first electronic device 10. The charging anomaly detection circuit includes a power transmission unit 1, an image processing unit 2, and an electrical connection unit 3. The power transmission unit 1 is electrically connected to the image processing unit 2 and the electrical connection unit 3.

[0052] For example, the first electronic device 10 is a display, the power delivery unit 1 is a USB Power Delivery IC, and the image processing unit 2 is the display's control chip. The display's control chip includes an image scaling circuit, an analog-to-digital converter (ADC) circuit, a phase-locked loop (PLL) circuit, and an on-screen display (OSD) circuit. The display's control chip is electrically connected to the display's driver chip. The control chip is responsible for receiving signals from the computer and for converting and processing image signals, while the driver chip is responsible for outputting and displaying image signals. The output signal from the driver chip is transmitted to the display panel. The electrical connection unit 3 is a USB Type-C port. The second electronic device 20 is a laptop computer. The electrical connection unit 201 of the second electronic device 20 is a USB Type-C port, and the charging cable is a USB Type-C cable. When the two ends of the charging cable are connected to the electrical connection unit 3 of the first electronic device 10 and the electrical connection unit 201 of the second electronic device 20 respectively, the power transmission unit 1 is configured to provide the charging process of the first electronic device 10 to the second electronic device 20.

[0053] The power transmission unit 1 is configured to detect whether a charging abnormality occurs during the charging process of the first electronic device 10 to the second electronic device 20. In response to the power transmission unit 1 detecting a charging abnormality during the charging process, the power transmission unit 1 is configured to generate and store a charging abnormality record.

[0054] The power delivery unit 1 includes a control unit 11, a voltage detection unit 12, a current detection unit 13, and a temporary register 14, with the control unit 11 electrically connected to the voltage detection unit 12, the current detection unit 13, and the temporary register 14. The control unit 11 may be, for example, a programmable logic controller circuit, a microprocessor circuit, a microcontroller circuit, a field-programmable gate array (FPGA), a complex programmable logic device (CPLD), an application-specific integrated circuit (ASIC), or other processors or controllers with signal processing capabilities.

[0055] The voltage detection unit 12 is a voltage detection circuit, configured to detect the charging voltage of the charging process performed by the first electronic device 10 on the second electronic device 20 to generate a voltage detection signal. The control unit 11 is configured to determine whether the voltage detection signal is greater than a voltage threshold. When the voltage detection signal is greater than the voltage threshold, the control unit 11 determines that a charging abnormality has occurred and generates a voltage abnormality record; in other words, the charging abnormality is an overvoltage, and the control unit 11 stores the voltage abnormality record in the temporary register 14. In one embodiment, the voltage detection unit 12 determines whether a charging abnormality has occurred earlier than the current detection unit 13. In one embodiment, the current detection unit 13 determines whether a charging abnormality has occurred earlier than the voltage detection unit 12. In one embodiment, the voltage detection unit 12 and the current detection unit 13 determine whether a charging abnormality has occurred simultaneously.

[0056] The current detection unit 13 is a current detection circuit, configured to detect the charging current of the first electronic device 10 charging the second electronic device 20 to generate a current detection signal. The control unit 11 is configured to determine whether the current detection signal is greater than a current threshold. When the current detection signal is greater than the current threshold, the control unit 11 determines that an abnormal charging condition has occurred and generates a current abnormality record. In other words, the abnormal charging condition is an overcurrent, and the control unit 11 stores the current abnormality record in the temporary register 14. In one embodiment, the first electronic device 10 may also be equipped with only one of the voltage detection unit 12 and the current detection unit 13.

[0057] When overvoltage and overcurrent occur during the charging process of the first electronic device 10 to the second electronic device 20, the charging anomaly record stored in the temporary register 14 includes both voltage and current anomaly records. The image processing unit 2 is configured to retrieve and store the charging anomaly record from the temporary register 14 of the power transmission unit 1. After the image processing unit 2 retrieves the charging anomaly record from the temporary register 14 of the power transmission unit 1, the image processing unit 2 displays the charging anomaly record through one or more of the display menu on the screen of the first electronic device 10 and the display operation interface of the second electronic device 20.

[0058] For example, the first electronic device 10 is a display, and the display includes shortcut keys. When a user or maintenance personnel triggers the shortcut keys of the first electronic device 10, the image processing unit 2 of the first electronic device 10 activates via the Inter-Integrated Circuit (I2C) bus. 2 C) The charging error record is retrieved from the temporary storage 14 of the power transmission unit 1. Next, the image processing unit 2 activates the on-screen display (OSD) menu on the display screen, and the on-screen display menu displays the charging error record. Users or maintenance personnel can then determine which charging errors occurred during the charging process of the first electronic device 10 to the second electronic device 20 by viewing the charging error record displayed in the on-screen display menu.

[0059] For example, the first electronic device 10 is a monitor, and the second electronic device 20 is a laptop computer. The laptop computer has a monitor operation interface 202 installed and includes shortcut keys. The monitor operation interface is an application, and the user can adjust various parameter settings of the first electronic device 10 through the monitor operation interface, such as contrast, color, brightness, and resolution. When the user or maintenance personnel trigger the shortcut key of the second electronic device 20, the second electronic device 20 sends a request command to the first electronic device 10. Then, the image processing unit 2 of the first electronic device 10 sends a command to the second electronic device 20 based on the request command sent by the second electronic device 20, using the Display Data Channel Command Interface (DDC / CI command). In one embodiment, the user can set the above-mentioned shortcut key through the keyboard and / or mouse hotkey combination of the second electronic device 20 to send a request command to the first electronic device 10. When the second electronic device 20 receives the command from the first electronic device 10, the monitor operation interface 202 of the second electronic device 20 displays a charging error record. Users or maintenance personnel can learn from the abnormal charging records displayed on the display interface 202 that there is an abnormality in the charging process of the first electronic device 10 to the second electronic device 20.

[0060] Figure 2This is a functional block diagram of a second embodiment of the charging anomaly detection circuit of the present invention. See also... Figure 2 The charging anomaly detection circuit includes a power transmission unit 1, an image processing unit 2, an electrical connection unit 3, and a protection unit 4. The power transmission unit 1 is electrically connected to the image processing unit 2 and the protection unit 4, and the electrical connection unit 3 is electrically connected to the protection unit 4. It should be noted that the charging anomaly detection circuit of the second embodiment differs from that of the first embodiment in that the charging anomaly detection circuit of the second embodiment further includes a protection unit 4, which is electrically connected between the power transmission unit 1 and the electrical connection unit 3. The remaining identical descriptions will not be repeated.

[0061] When a charging abnormality occurs during the charging process of the first electronic device 10 to the second electronic device 20, the image processing unit 2 displays a charging abnormality record through one or more of the display menu on the screen of the first electronic device 10 and the display operation interface 202 of the second electronic device 20, and the protection unit 4 transmits a charging abnormality signal to the power transmission unit 1.

[0062] Protection unit 4 is a display protection circuit, which internally includes overvoltage protection circuit and overcurrent protection circuit. Protection unit 4 also includes control pins and fault pins. The user adjusts the overvoltage protection threshold and overcurrent protection threshold via the control pins. When protection unit 4 detects one or more of overvoltage and overcurrent during the charging process, the fault pin of protection unit 4 transmits a charging abnormality signal to power transmission unit 1. In one embodiment, power transmission unit 1 can be electrically connected to electrical connection unit 3 via a USB voltage line (Vbus). In one embodiment, power transmission unit 1 can be electrically connected to electrical connection unit 3 via data transmission lines (Tx / Rx). In one embodiment, power transmission unit 1 can be electrically connected to protection unit 4 via a channel configuration line (CC), and protection unit 4 can be electrically connected to electrical connection unit 3 via a channel configuration line.

[0063] Figure 3 This is a functional block diagram of a third embodiment of the charging anomaly detection circuit of the present invention. See also... Figure 3The charging anomaly detection circuit includes a power transmission unit 1, an image processing unit 2, and an electrical connection unit 3. The power transmission unit 1 is electrically connected to the image processing unit 2 and the electrical connection unit 3. The power transmission unit 1 includes a control unit 11, a register 14, a temperature detection unit 15, and a short circuit detection unit 16. The control unit 11 is electrically connected to the register 14, the temperature detection unit 15, and the short circuit detection unit 16. The temperature detection unit 15 is a temperature detection circuit configured to detect the temperature during the charging process of the first electronic device 10 to the second electronic device 20 to generate a temperature detection signal. The control unit 11 is configured to determine whether the temperature detection signal is greater than a temperature threshold. When the temperature detection signal is greater than the temperature threshold, the control unit 11 determines that a charging anomaly has occurred and generates a temperature anomaly record, which is stored in the register 14.

[0064] The short-circuit detection unit 16 is a short-circuit detection circuit configured to detect whether a short circuit occurs during the charging process of the first electronic device 10 to the second electronic device 20. When the short-circuit detection unit 16 detects a short circuit during the charging process, the control unit 11 determines that an abnormal charging condition has occurred and generates a short-circuit abnormality record, which is stored in the temporary register 14. In one embodiment, the temperature detection unit 15 determines whether an abnormal charging condition has occurred earlier than the short-circuit detection unit 16. In another embodiment, the short-circuit detection unit 16 determines whether an abnormal charging condition has occurred earlier than the temperature detection unit 15. In yet another embodiment, the temperature detection unit 15 and the short-circuit detection unit 16 determine whether an abnormal charging condition has occurred simultaneously.

[0065] For example, when the short-circuit detection unit 16 detects a short circuit between the Vbus pin and the CC1 pin of the electrical connection unit 3, or a short circuit between the Vbus pin and the SBU pin, the control unit 11 determines that a charging abnormality has occurred and generates a short-circuit abnormality record. In one embodiment, the first electronic device 10 may also be provided with any combination of at least one of the temperature detection unit 15, the short-circuit detection unit 16, the voltage detection unit 12, and the current detection unit 13.

[0066] When the charging abnormality includes both temperature abnormality and short circuit, the charging abnormality record stored in the temporary storage 14 includes both temperature abnormality record and short circuit abnormality record. After the image processing unit 2 obtains the temperature abnormality record and short circuit abnormality record from the temporary storage 14 of the power transmission unit 1, the image processing unit 2 displays the temperature abnormality record and short circuit abnormality record through one or more of the display menu on the screen of the first electronic device 10 and the display operation interface 202 of the second electronic device 20.

[0067] Figure 4This is a functional block diagram of the fourth embodiment of the charging anomaly detection circuit of the present invention. Figure 4 and Figure 3 The difference is that the charging abnormality detection circuit also includes a protection unit 4, which is electrically connected between the power transmission unit 1 and the electrical connection unit 3.

[0068] Protection unit 4 is a display protection circuit, which internally includes a high-temperature protection circuit and a short-circuit protection circuit. Protection unit 4 also includes control pins and fault pins. The user adjusts the temperature protection threshold via the control pins. When protection unit 4 detects one or more of the following during the charging process: overheating or a short circuit, the fault pin of protection unit 4 transmits a charging abnormality signal to power transmission unit 1. In one embodiment, power transmission unit 1 can be electrically connected to electrical connection unit 3 via a USB voltage line (Vbus). In one embodiment, power transmission unit 1 can be electrically connected to electrical connection unit 3 via data transmission lines (Tx / Rx). In one embodiment, power transmission unit 1 can be electrically connected to protection unit 4 via a channel configuration line (Channel Configuration, CC), and protection unit 4 can be electrically connected to electrical connection unit 3 via a channel configuration line.

[0069] Figure 5 This is a functional block diagram of the fifth embodiment of the charging anomaly detection circuit of the present invention. See also... Figure 5The charging anomaly detection circuit includes a power transmission unit 1, an image processing unit 2, an electrical connection unit 3, and a protection unit 4. The power transmission unit 1 is electrically connected to the image processing unit 2 and the protection unit 4, while the electrical connection unit 3 is electrically connected to the protection unit 4. The power transmission unit 1 includes a control unit 11, a voltage detection unit 12, a current detection unit 13, a register 14, a temperature detection unit 15, and a short circuit detection unit 16. The control unit 11 is electrically connected to the voltage detection unit 12, the current detection unit 13, the register 14, the temperature detection unit 15, and the short circuit detection unit 16. The protection unit 4 is electrically connected between the power transmission unit 1 and the electrical connection unit 3. When the power transmission unit 1 detects an anomaly in the charging process of the first electronic device 10 to the second electronic device 20, the control unit 11 determines that an abnormal charging condition has occurred and generates a charging anomaly record. The control unit 11 stores the charging anomaly record in the register 14. The charging anomaly condition is one or more of overvoltage, overcurrent, high temperature, and short circuit. In one embodiment, the first electronic device 10 may also be provided with any combination of at least one of the voltage detection unit 12, current detection unit 13, temperature detection unit 15, and short circuit detection unit 16, and the order in which they judge abnormal charging conditions can be arbitrarily adjusted or performed synchronously. In one embodiment, the aforementioned electrical connection unit 3 may be a High Definition Multimedia Interface (HDMI), a Digital Visual Interface (DVI), a DisplayPort (DP), or a high-performance Internet cable (CAT 5 / 5e / 6 / 6A / 7).

[0070] Protection unit 4 is a display protection circuit, which internally includes overvoltage protection circuit, overcurrent protection circuit, high temperature protection circuit, and short circuit protection circuit. Protection unit 4 also includes control pins and fault pins. The user can adjust the overvoltage protection threshold, overcurrent protection threshold, and temperature protection threshold via the control pins. When protection unit 4 detects one or more of the following during the charging process: overvoltage, overcurrent, overtemperature, or short circuit, the fault pin of protection unit 4 transmits a charging abnormality signal to power transmission unit 1.

[0071] Figure 6 This is a functional block diagram of a sixth embodiment of the charging anomaly detection circuit of the present invention. See also... Figure 6The charging anomaly detection circuit includes a power transmission unit 1, an image processing unit 2, a protection unit 4, and a wireless charging transmitter 5. The power transmission unit 1 is electrically connected to the image processing unit 2 and the protection unit 4, while the wireless charging transmitter 5 is electrically connected to the protection unit 4. The wireless charging transmitter 5 includes, for example, a processor, a radio frequency (RF) circuit, a baseband circuit, a media access control (MAC) circuit, and a transmitting antenna. The processor is connected to the MAC circuit, which is connected to the baseband circuit, which is connected to the RF circuit, and the RF circuit is connected to the transmitting antenna. The signal output by the processor is processed sequentially by the MAC circuit, the baseband circuit, and the RF circuit to generate an RF signal, which is then transmitted by the transmitting antenna.

[0072] The second electronic device 20 includes a wireless charging receiver 203, which includes, for example, a processor, a radio frequency circuit, a baseband circuit, a media access control circuit, and a receiving antenna. The processor is connected to the media access control circuit, which is connected to the baseband circuit, which is connected to the radio frequency circuit, and the radio frequency circuit is connected to the receiving antenna.

[0073] The wireless charging transmitter 5 of the first electronic device 10 and the wireless charging receiver 203 of the second electronic device 20 conduct the charging process via a resonant wireless transmission mechanism. When the power transmission unit 1 detects an abnormal charging condition, it is configured to generate and store a charging abnormality record. In one embodiment, the wireless charging transmitter 5 may include wireless communication protocols such as Wi-Fi, Bluetooth, Zigbee, Thread, Z-Wave, and Matter.

[0074] Protection unit 4 is a display protection circuit, which includes overvoltage protection circuit and overcurrent protection circuit. Protection unit 4 also includes control pins and fault pins. The user can adjust the overvoltage protection threshold and overcurrent protection threshold via the control pins. When protection unit 4 detects one or more of overvoltage and overcurrent during the charging process, the fault pin of protection unit 4 sends a charging abnormality signal to power transmission unit 1.

[0075] After obtaining the charging abnormality record from the power transmission unit 1, the image processing unit 2 displays the charging abnormality record through one or more of the display menu on the screen of the first electronic device 10 and the display operation interface 202 of the second electronic device 20.

[0076] Figure 7 This is a flowchart of a first embodiment of the charging anomaly detection method of the present invention. See also... Figure 7In step S101, the voltage detection unit 12 of the power transmission unit 1 detects the charging voltage of the charging process of the first electronic device 10 to the second electronic device 20 to generate a voltage detection signal.

[0077] In step S102, the charging current of the charging process of the first electronic device 10 to the second electronic device 20 is detected by the current detection unit 13 of the power transmission unit 1 to generate a current detection signal.

[0078] In step S103, the control unit 11 of the power transmission unit 1 determines whether the voltage detection signal is greater than the voltage threshold. If yes, proceed to step S104; otherwise, proceed to step S105.

[0079] In step S104, the control unit 11 determines that a charging abnormality has occurred and generates a voltage abnormality record, and stores the voltage abnormality record in the temporary storage 14 of the power transmission unit 1.

[0080] In step S105, the control unit 11 determines whether the current detection signal is greater than the current threshold. If yes, proceed to step S106; otherwise, return to step S101. In one embodiment, step S102 may be located between steps S103 and S105.

[0081] In step S106, the control unit 11 determines that an abnormal charging condition has occurred and generates an abnormal current record, and stores the abnormal current record in the temporary register 14.

[0082] Step S107 follows step S106. In step S107, the image processing unit 2 retrieves and stores the current abnormality record from the temporary storage unit 14.

[0083] In step S108, the image processing unit 2 displays the current abnormality record through one or more of the menu displayed on the screen of the first electronic device 10 and the display operation interface 202 of the second electronic device 20. Specifically, the image processing unit 2 sends a command to the second electronic device 20 based on the request command from the second electronic device 20, using the display data channel / command interface. When the second electronic device 20 receives the command from the image processing unit 2, the display operation interface 202 of the second electronic device 20 displays the current abnormality record.

[0084] Step S109 follows step S104. In step S109, the control unit 11 determines whether the current detection signal is greater than the current threshold. If yes, proceed to step S110; otherwise, proceed to step S111.

[0085] In step S110, the control unit 11 determines that an abnormal charging condition has occurred and generates an abnormal current record, and stores the abnormal current record in the temporary register 14.

[0086] In step S111, the image processing unit 2 retrieves and stores the voltage anomaly record from the temporary storage unit 14. In one embodiment, step S111 may be located between steps S104 and S109.

[0087] Step S112 follows step S110. In step S112, the image processing unit 2 displays voltage and current abnormality records through one or more of the menu displayed on the screen of the first electronic device 10 and the display operation interface 202 of the second electronic device 20. Specifically, the image processing unit 2 sends instructions to the second electronic device 20 based on the request instructions from the second electronic device 20, using the display data channel / command interface. When the second electronic device 20 receives the instructions from the image processing unit 2, the display operation interface 202 of the second electronic device 20 displays the voltage and current abnormality records.

[0088] Step S113 follows step S111. In step S113, the image processing unit 2 displays a voltage abnormality record through one or more of the menu displayed on the screen of the first electronic device 10 and the display operation interface 202 of the second electronic device 20. Specifically, the image processing unit 2 sends a command to the second electronic device 20 based on a request command from the second electronic device 20, using the display data channel / command interface. When the second electronic device 20 receives the command from the image processing unit 2, the display operation interface 202 of the second electronic device 20 displays the voltage abnormality record.

[0089] Figure 8 This is a flowchart of a second embodiment of the charging anomaly detection method of the present invention. See also... Figure 8 In step S201, the temperature of the charging process of the first electronic device 10 to the second electronic device 20 is detected by the temperature detection unit 15 of the power transmission unit 1 to generate a temperature detection signal.

[0090] In step S202, the control unit 11 of the power transmission unit 1 determines whether the temperature detection signal is greater than the temperature threshold. If yes, proceed to step S203; otherwise, proceed to step S204.

[0091] In step S203, the control unit 11 determines that an abnormal charging condition has occurred and generates a temperature abnormality record, and stores the temperature abnormality record in the temporary storage 14 of the power transmission unit 1.

[0092] In step S204, the short-circuit detection unit 16 of the power transmission unit 1 detects whether a short circuit has occurred during the charging process of the first electronic device 10 to the second electronic device 20. If yes, proceed to step S205; otherwise, return to step S201.

[0093] In step S205, the control unit 11 determines that a charging abnormality has occurred and generates a short circuit abnormality record, and stores the short circuit abnormality record in the temporary register 14.

[0094] In step S206, the short circuit anomaly record is obtained from the temporary storage unit 14 and stored by the image processing unit 2.

[0095] In step S207, the image processing unit 2 displays a short-circuit fault record via one or more of the menu displayed on the screen of the first electronic device 10 and the display operation interface 202 of the second electronic device 20. Specifically, the image processing unit 2 sends a command to the second electronic device 20 based on a request command from the second electronic device 20, using the display data channel / command interface. When the second electronic device 20 receives the command from the image processing unit 2, the display operation interface 202 of the second electronic device 20 displays the short-circuit fault record.

[0096] Step S208 follows step S203. In step S208, the short-circuit detection unit 16 detects whether a short circuit has occurred during the charging process of the first electronic device 10 to the second electronic device 20. If yes, proceed to step S209; otherwise, proceed to step S210.

[0097] In step S209, the control unit 11 determines that a charging abnormality has occurred and generates a short circuit abnormality record, and stores the short circuit abnormality record in the temporary register 14.

[0098] In step S210, the image processing unit 2 retrieves and stores the temperature anomaly record from the temporary storage unit 14. In one embodiment, step S210 may be located between steps S203 and S208.

[0099] Step S211 follows step S209. The image processing unit 2 displays temperature anomaly records and short-circuit anomaly records via one or more of the menu displayed on the screen of the first electronic device 10 and the display operation interface of the second electronic device 20. Specifically, the image processing unit 2 sends instructions to the second electronic device 20 based on a request instruction from the second electronic device 20, using a display data channel / command interface. When the second electronic device 20 receives the instructions from the image processing unit 2, its display operation interface 202 displays the temperature anomaly records and short-circuit anomaly records.

[0100] In step S212, the image processing unit 2 displays temperature anomaly records through one or more of the menu displayed on the screen of the first electronic device 10 and the display operation interface of the second electronic device 20. Specifically, the image processing unit 2 sends instructions to the second electronic device 20 based on the request instructions from the second electronic device 20, using the display data channel / command interface. When the second electronic device 20 receives the instructions from the image processing unit 2, the display operation interface 202 of the second electronic device 20 displays the temperature anomaly records. In one embodiment, the present invention can execute at least one or more of the following steps in any combination: S103 (determining whether the voltage detection signal is greater than the voltage threshold), S105 (determining whether the current detection signal is greater than the current threshold), S202 (determining whether the temperature detection signal is greater than the temperature threshold), and S204 (determining whether there is a short circuit), and their order can be arbitrarily adjusted or executed synchronously.

[0101] [Beneficial Effects of the Examples]

[0102] One of the beneficial effects of this invention is that the charging anomaly detection circuit and method provided by this invention allow the user to be aware of any abnormalities during the charging process of the electronic device. When the user detects an abnormality, they can stop charging the electronic device to prevent damage.

[0103] In one embodiment, the present invention helps to collect adverse market information when the USB Type-C port of a display product encounters adverse conditions in market and client use, thereby assisting in subsequent analysis and debugging.

[0104] In one embodiment, the present invention proposes a detection circuit and recording method for whether a USB-C monitor with PD power output has experienced voltage / current / temperature / short circuit abnormalities. This allows maintenance units or users to check or be alerted to potential USB Type-C port burnout situations that have occurred, helping to clarify whether it is a problem with the user's operating environment (with PC / NB) or other issues. This will be helpful for the increasing number of USB Type-C PD power supply applications and compatibility / operability conditions.

[0105] The present invention has been described in the above-described embodiments; however, these embodiments are merely examples for implementing the present invention. It must be noted that the disclosed embodiments do not limit the scope of the present invention. Conversely, any modifications and refinements made without departing from the spirit and scope of the present invention are within the scope of patent protection of the present invention.

Claims

1. A charging anomaly detection circuit, configured in a first electronic device, characterized in that, The charging anomaly detection circuit includes: Image processing unit; and A power transmission unit is electrically connected to the image processing unit. The power transmission unit is configured to provide the charging process of the first electronic device to the second electronic device and to detect whether the charging process is abnormal. In response to an abnormal charging condition detected by the power transmission unit during the charging process, the power transmission unit is configured to generate and store a charging abnormality record.

2. The charging anomaly detection circuit as described in claim 1, characterized in that, The image processing unit is configured to acquire and store the charging anomaly record from the power transmission unit, and to display the charging anomaly record via a menu on the screen of the first electronic device and / or a display operation interface of the second electronic device.

3. The charging anomaly detection circuit as described in claim 1, characterized in that, The power transmission unit includes a register for storing the charging anomaly record, and the image processing unit is configured to retrieve and store the charging anomaly record from the register.

4. The charging anomaly detection circuit as described in claim 1, characterized in that, The image processing unit sends instructions based on a display data channel command interface to transmit the abnormal charging record to the second electronic device according to the request instruction of the second electronic device, and the second electronic device displays the abnormal charging record.

5. The charging anomaly detection circuit as described in claim 1, characterized in that, The power transmission unit includes a control unit, a voltage detection unit, and a current detection unit; The control unit is electrically connected to the voltage detection unit and the current detection unit. The voltage detection unit is configured to detect the charging voltage during the charging process to generate a voltage detection signal, and the current detection unit is configured to detect the charging current during the charging process to generate a current detection signal. The control unit is configured to determine whether the voltage detection signal is greater than the voltage threshold. When the voltage detection signal is greater than the voltage threshold, the control unit determines that the charging abnormality has occurred and generates a voltage abnormality record. The control unit is also configured to determine whether the current detection signal is greater than the current threshold. When the current detection signal is greater than the current threshold, the control unit determines that the charging abnormality has occurred and generates a current abnormality record, wherein the charging abnormality record includes the voltage abnormality record and the current abnormality record.

6. The charging anomaly detection circuit as described in claim 1, characterized in that, The power transmission unit further includes a control unit, a temperature detection unit, and a short-circuit detection unit; the control unit is electrically connected to the temperature detection unit and the short-circuit detection unit. The temperature detection unit is configured to detect the temperature during the charging process to generate a temperature detection signal. The control unit is configured to determine whether the temperature detection signal is greater than a temperature threshold. When the temperature detection signal is greater than the temperature threshold, the control unit determines that an abnormal charging condition has occurred and generates a temperature abnormality record. The short circuit detection unit is configured to detect whether a short circuit occurs during the charging process of the first electronic device to the second electronic device. When the short circuit detection unit detects a short circuit during the charging process, the control unit determines that the charging abnormality has occurred and generates a short circuit abnormality record, wherein the charging abnormality record also includes the temperature abnormality record and the short circuit abnormality record.

7. The charging anomaly detection circuit as described in claim 1, characterized in that, It also includes an electrical connection unit and a protection unit. The electrical connection unit is electrically connected to the second electronic device via a charging cable, and the protection unit is electrically connected between the electrical connection unit and the power transmission unit. When an abnormal charging condition occurs during the charging process, the protection unit transmits a charging abnormality signal to the power transmission unit.

8. The charging anomaly detection circuit as described in claim 1, characterized in that, It also includes a wireless charging transmitter and a protection unit, and the second electronic device includes a wireless charging receiver. The wireless charging transmitter and the wireless charging receiver communicate via a resonant wireless transmission mechanism during the charging process. The protection unit is electrically connected to the wireless charging transmitter and the power transmission unit. When an abnormal charging condition occurs during the charging process, the protection unit transmits a charging abnormality signal to the power transmission unit.

9. A method for detecting charging anomalies, applied to a first electronic device, characterized in that, The charging anomaly detection method includes: The charging process of the first electronic device to the second electronic device is monitored through the power transmission unit; and In response to the power transmission unit detecting an abnormal charging condition during the charging process, the power transmission unit generates and stores a charging abnormality record.

10. The charging anomaly detection method as described in claim 9, characterized in that, It also includes: acquiring and storing the charging anomaly record from the power transmission unit via the image processing unit, and displaying the charging anomaly record via a menu on the screen of the first electronic device and / or a display operation interface of the second electronic device.

11. The charging anomaly detection method as described in claim 9, characterized in that, The power transmission unit includes a register for storing the charging anomaly record, and an image processing unit retrieves the charging anomaly record from the register.

12. The charging anomaly detection method as described in claim 9, characterized in that, It also includes: sending instructions via an image processing unit based on a display data channel / command interface, so as to transmit the abnormal charging record to the second electronic device and display the abnormal charging record according to the request instruction of the second electronic device.

13. The charging anomaly detection method as described in claim 9, characterized in that, The power transmission unit monitors the charging process including: The charging voltage during the charging process is detected by the voltage detection unit of the power transmission unit to generate a voltage detection signal. The charging current during the charging process is detected by the current detection unit of the power transmission unit to generate a current detection signal. The control unit of the power transmission unit determines whether the voltage detection signal is greater than the voltage threshold; when the voltage detection signal is greater than the voltage threshold, the control unit determines that the charging abnormality has occurred and generates a voltage abnormality record; the control unit also determines whether the current detection signal is greater than the current threshold. When the current detection signal is greater than the current threshold, the control unit determines that the charging abnormality has occurred and generates a current abnormality record, wherein the charging abnormality record includes the voltage abnormality record and the current abnormality record.

14. The charging anomaly detection method as described in claim 9, characterized in that, The power transmission unit also monitors the charging process, including: The temperature detection unit of the power transmission unit detects the temperature during the charging process to generate a temperature detection signal. The control unit of the power transmission unit determines whether the temperature detection signal is greater than the temperature threshold; when the temperature detection signal is greater than the temperature threshold, the control unit determines that the charging abnormality has occurred and generates a temperature abnormality record. The short circuit detection unit of the power transmission unit detects whether a short circuit occurs during the charging process; when a short circuit occurs during the charging process, the control unit determines that the charging abnormality has occurred and generates a short circuit abnormality record, wherein the charging abnormality record also includes the temperature abnormality record and the short circuit abnormality record.

15. The charging anomaly detection method as described in claim 9, characterized in that, The first electronic device performs the charging process on the second electronic device through an electrical connection unit and a charging cable; When an abnormal charging condition occurs during the charging process, the protection unit of the first electronic device transmits a charging abnormality signal to the power transmission unit.

16. The charging anomaly detection method as described in claim 9, characterized in that, The charging process is carried out between the first electronic device and the second electronic device via a resonant wireless transmission mechanism. When an abnormal charging condition occurs during the charging process, the protection unit of the first electronic device transmits a charging abnormality signal to the power transmission unit.

Images