Charging wake-up system, method, mobile device, and charging plug

Abstract

The application provides a charging wake-up system, method, mobile device and charging plug. The charging wake-up system of the mobile device comprises: a charging interface arranged on the mobile device and configured to be physically plugged with a charging plug on a charger; a wake-up module connected to the charging interface and configured to output a wake-up signal when the charging plug is physically plugged with the charging interface; and a control module connected to the wake-up module and configured to control the mobile device to enter a charging state and prohibit the mobile device from moving in response to the wake-up signal. Based on the above, the problems that the existing charging wake-up system of the mobile device cannot make the mobile device enter the charging state when the charger is in a shutdown state or the physical resistance signal is inaccurate and the charging cable or charger is dragged due to the misoperation of the mobile device are solved, and the reliability of the system is enhanced.

Description

Technical Field

[0001] This application relates to the field of mobile device applications, specifically to a charging wake-up system, method, mobile device, and charging plug. Background Technology

[0002] In the field of mobile device applications, when a lithium battery system is connected to an external charger for charging, in order to prevent accidental dragging due to the charging cable not being unplugged, it is necessary to identify the physical connection status between the mobile device and the charger and reliably control the mobile device to a non-movable state.

[0003] To meet this requirement, existing technologies typically use a specific physical resistance signal configured in the charging interface as a charging connection confirmation signal, or use a low-voltage auxiliary power supply actively provided by the charger after it is powered on, or periodic communication messages, as the basis for determining that the charger has been connected and the device has entered the charging state. However, if the physical resistance signal is inaccurate, or the charger is powered off, or the power switch is not turned on, the charger cannot provide an electrical signal or communication message that can be recognized by the mobile device. Therefore, even when the charger is connected to the mobile device, the mobile device may remain in a drivable state because it cannot recognize the charging connection, leading to accidental dragging of the charging cable and charger by the mobile device. In summary, the charging wake-up system for mobile devices in related technologies suffers from problems such as the inability to put the mobile device into a charging state due to the charger being powered off or the physical resistance signal being inaccurate, and the charging cable being dragged. Summary of the Invention

[0004] In view of this, this application aims to provide a charging wake-up system, method, mobile device, and charging plug to solve related technical problems.

[0005] In a first aspect, this application provides a charging wake-up system for a mobile device, comprising: The charging port, located on the mobile device, is configured to physically plug into the charging plug on the charger. The wake-up module, connected to the charging interface, is configured to output a wake-up signal when the charging plug and the charging interface are physically plugged in. The control module, connected to the wake-up module, is configured to control the mobile device to enter a charging state and prevent the mobile device from moving in response to a wake-up signal.

[0006] Optionally, the charging interface includes at least a first pin and a second pin; The wake-up module includes a shorting component, wherein, When the charging plug is physically plugged into the charging interface, the shorting component shorts the first and second pins to generate a wake-up signal.

[0007] Optionally, the charging interface includes at least a first pin and a second pin; The wake-up module includes a power conversion unit. The input of the power conversion unit is connected to a first pin and a second pin and is configured to output a wake-up signal when the first pin and the second pin are shorted.

[0008] Optionally, the control module is configured to disconnect the power supply circuit of the mobile device's drive system in response to the mobile device entering a charging state, thereby disabling the drive system.

[0009] Optionally, the power supply circuit includes a discharge relay; the control module is configured to control the discharge relay to disconnect, thereby disabling the drive system.

[0010] Optionally, the control module is also configured to enter a sleep state after a preset time in response to detecting a full charge signal indicating that the mobile device has finished charging.

[0011] Optionally, the control module is also configured to maintain a standby state in response to the absence of a fully charged signal indicating that the mobile device has completed charging.

[0012] Secondly, this application also provides a charging wake-up method for a mobile device. The mobile device includes a charging interface, a wake-up module, and a control module. The wake-up module is connected to the charging interface, and the control module is connected to the wake-up module. The control module is used to perform the following steps: When the charging interface is physically plugged into the charging plug on the charger, the wake-up signal output by the wake-up module is obtained; In response to a wake-up signal, the mobile device is controlled to enter a charging state, and movement of the mobile device is prohibited while it is charging.

[0013] Secondly, this application also provides a mobile device, comprising: Power battery; Drive system, connected to power battery; The wake-up system of the mobile device as described in the first aspect is connected to the power battery and the drive system.

[0014] Thirdly, this application also provides a charging plug for physically connecting to the charging interface of a mobile device, the mobile device including a wake-up module configured to output a wake-up signal in response to the physical connection action, the charging plug including: main body; A shorting component, disposed on the main body, is configured to short at least two pins of the charging interface when the charging plug is physically plugged into the charging interface, thereby triggering the wake-up module to output a wake-up signal.

[0015] Based on the above, the mobile device charging wake-up system provided in this application constructs a locally autonomous charging connection mechanism that does not rely on an external charger for power supply. This is achieved by setting a wake-up module that outputs a wake-up signal when a physical insertion action occurs, and a control module that controls the mobile device to enter the charging state and prevents movement based on the wake-up signal. This solves the problems of existing mobile device charging wake-up systems, such as the inability to put the mobile device into the charging state when the charger is off or the physical resistance signal is inaccurate, and the problem of the charging cable or charger being dragged due to accidental operation of the mobile device, thus enhancing the reliability of the system. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the charging wake-up system for a mobile device provided in an embodiment of this application.

[0018] Figure 2 This is another schematic diagram of the charging wake-up system for a mobile device provided in an embodiment of this application.

[0019] Figure 3 This is another schematic diagram of the charging wake-up system for a mobile device provided in an embodiment of this disclosure.

[0020] Figure 4 This is a schematic flowchart of a charging and waking-up method for a mobile device provided in an embodiment of this disclosure.

[0021] Figure 5 This is a schematic diagram of the structure of a mobile device provided in an embodiment of this disclosure.

[0022] Figure 6 This is a schematic diagram of the structure of the charging plug provided in an embodiment of this disclosure. Detailed Implementation

[0023] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0024] Where there is no conflict, the various embodiments of this disclosure and the features thereof in the embodiments may be combined with each other.

[0025] As used herein, the term “and / or” includes any and all combinations of one or more related enumerated entries.

[0026] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this disclosure. As used herein, the singular forms “a” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will also be understood that when the terms “comprising” and / or “made of” are used in this specification, the presence of the stated feature, integral, step, operation, element, and / or component is specified, but the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof is not excluded. Words such as “connected” or “linked” are not limited to physical or mechanical connections but can include electrical connections, whether direct or indirect.

[0027] Unless otherwise specified, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art. It will also be understood that terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and this disclosure, and will not be interpreted as having an idealized or overly formal meaning, unless expressly so defined herein.

[0028] Currently, in lithium battery charging management scenarios for mobile devices such as industrial vehicles, to prevent accidental vehicle startup due to unplugged charging cables leading to the dragging of charging equipment, it is typically necessary to verify whether the charging cable remains physically connected to the vehicle. In related technologies, lithium battery systems with fast charging capabilities often utilize a specific resistance signal from the CC2 (Charge ConnectionConfirm 2) pin of the charging interface as a charging connection confirmation signal. For slow charging systems, however, they generally rely on a 12V electrical signal or communication message actively provided by the charger as the condition for entering the charging state. Both approaches involve the external charging device sending an electrical identifier to the vehicle; the battery management system only controls the vehicle to enter charging mode and restricts the drive system's operation upon receiving this identifier.

[0029] However, when the charger is off, such as when the user inserts the charging plug into the vehicle's charging port without turning on the charger's power switch, the aforementioned method relying on external signals will fail. In this situation, the charger cannot output a 12V electrical signal or communication message, the battery management system cannot detect that the plug is physically connected, the vehicle will not enter charging mode, and the drive system may still be in an operational mode. If the operator accidentally starts the vehicle under these circumstances, they will drag the charging cable and charger, causing a safety accident. Furthermore, in some fast charging systems, the CC2 resistance signal needs to be converted from an analog signal. If the conversion accuracy is insufficient or the contact resistance changes, it may also lead to incorrect connection status recognition, preventing the system from correctly entering charging mode and leaving a dragging risk.

[0030] In summary, the existing charging connection status detection chain is designed to rely solely on the electrical signal or reference impedance provided by the charger as the trigger source. The mobile device's own control unit fails to independently respond to the mechanical event of the physical insertion of the charging plug. When external power is not ready or the signal transmission circuit malfunctions, the entire wake-up chain is broken. Furthermore, after a full charge, the battery management system in related technologies remains in standby mode for an extended period, continuously consuming battery energy. Directly cutting off power or prematurely entering sleep mode may disrupt final processing steps such as equalization maintenance, and users cannot easily distinguish whether the system enters sleep mode after a normal full charge or remains in standby mode due to a fault interruption.

[0031] To address the aforementioned issues, this application provides a charging wake-up system for mobile devices. A wake-up module is integrated within the mobile device, capable of actively responding to the physical insertion of the charging plug. It directly generates a wake-up signal by utilizing the electrical state changes resulting from insertion, eliminating reliance on active signals or analog resistance values ​​provided by the charger. Upon receiving this wake-up signal, the control module initiates charging and deactivates the drive system, electrically cutting off the power supply to the mobile device and preventing movement. Furthermore, by incorporating a delayed sleep mode after full charging and a standby mechanism to maintain standby status before full charging, long-term standby power consumption is reduced, and a discernible state distinction is provided to indicate whether the charging process is complete. Therefore, even if the charger is completely powered off, outputs no electrical signals or messages, or the CC2 resistance value is inaccurate, the system can still identify the charging plug connection and continue charging the mobile device. This not only prevents dragging accidents and ensures charging safety during charging but also optimizes energy efficiency and makes fault status observable.

[0032] It should be noted that the charging wake-up system of this application is widely applicable to any mobile device that can be physically connected to a charging plug via a charging interface, relies on a rechargeable power source, and has a drive system, including but not limited to: industrial electric vehicles (such as forklifts, electric pallet trucks, and stackers), electric vehicles and low-speed electric vehicles (such as pure electric vehicles, plug-in hybrid electric vehicles, and golf carts), and other electric mobile platforms (such as automated guided vehicles, electric cleaning equipment, and electric construction machinery). It is particularly suitable for slow charging systems that rely on the charger to actively provide confirmation signals, aiming to solve the problem of dragging accidents caused by the inability to recognize the charging connection status due to the charger being turned off or lacking a signal.

[0033] See Figure 1 , Figure 1 This is a schematic diagram of the charging wake-up system for a mobile device provided in this application. The charging wake-up system 100 includes: a charging interface 110, a wake-up module 120, and a control module 130.

[0034] The charging interface is located on the mobile device and is configured to physically connect with the charging plug on the charger (not shown). The wake-up module is connected to the charging interface and is configured to output a wake-up signal when the charging plug and the charging interface are physically connected. The control module 130 is connected to the wake-up module and is configured to control the mobile device to enter the charging state and prevent the mobile device from moving in response to the wake-up signal.

[0035] In one embodiment, a charging plug generally refers to a connector component used to deliver electrical power from an external power source to a mobile device, which can be physically connected to a charging interface on the mobile device via a plug-in manner. A charging interface generally refers to an interface assembly used to receive a charging plug and establish a mechanical and electrical connection thereto. For example, it may include, but is not limited to, multi-pin sockets with multiple pins, terminal blocks, or other interface structures that achieve conductive contact, or combinations thereof.

[0036] The charging interface is configured to physically connect with the charging plug. In this application, "physical connection" refers to the physical state in which the conductive part of the charging plug is fully inserted into the corresponding hole of the charging interface, so that the conductor on the charging plug side and the corresponding pin on the charging interface side are mechanically in contact and form an electrical path.

[0037] In one embodiment, the wake-up module generally refers to a circuit or functional unit capable of generating a wake-up signal in response to the physical insertion of the charging plug and the charging interface. The wake-up signal generally refers to any electrical signal used to trigger the control module 130 and switch the mobile device from a non-charging state to a charging state. For example, it may include, but is not limited to, voltage signals, current signals, pulse signals, or digital communication message signals, or combinations thereof.

[0038] The wake-up module is configured to output a wake-up signal in response to the physical insertion of the charging plug and the charging interface. There are several ways to achieve this function. In one implementation, the input circuit inside the wake-up module is electrically disconnected when the charging interface is not inserted. When the plug is inserted, the conductive structure inside the plug bridges two or more specific pins on the charging interface, so that the input of the wake-up module forms a complete closed loop.

[0039] In one embodiment, the control module 130 may specifically include a battery management system, which generally refers to a management system for charging, discharging, monitoring the state, protecting, and controlling the battery of a mobile device. For example, it may include, but is not limited to, a battery management circuit board with an integrated microcontroller, a distributed battery management unit, or other control devices with charging wake-up logic, or combinations thereof. Furthermore, in other embodiments of this disclosure, the control module 130 may also be implemented by the vehicle controller of the mobile device or a separate logic control unit, whose function is to receive a wake-up signal and perform charging state switching according to preset logic.

[0040] The control module 130 is configured to control the mobile device to enter a charging state and prevent the mobile device from moving in response to a wake-up signal. Specific means of implementing the above control function may include: at the hardware level, the core of the control module 130 can be a microcontroller with a dedicated wake-up signal receiving pin; at the software or logic level, the microcontroller's internal program is set to trigger an interrupt handling routine when the voltage level on the pin changes from a first state (e.g., low level) to a second state (e.g., high level). This routine first switches the system state from standby or hibernation to charging state. Further, this switching action triggers the battery management system to send a specific control command through its general-purpose input / output port to drive the relevant actuators, thereby cutting off the path for the drive system to obtain power and preventing the mobile device from moving.

[0041] The charging state triggering condition in this application is entirely based on the mechanical action itself, and does not depend on whether the charger is powered on or whether its internal control logic is working properly. By directly generating a wake-up signal through a physical plug-in action, a highly reliable prerequisite is provided for the control module 130 to enter the charging state. Even if the charger power switch is completely off and no 12V constant power or communication handshake message can be provided, as long as the charging plug completes the physical connection, the wake-up module will generate a wake-up signal.

[0042] Based on the above method, the control module 130 can sense in real time that the charging connection has been completed, thereby enabling the mobile device to enter the charging state and cutting off the drive. This effectively solves the problems of the mobile device being unable to enter the charging state when the charger is in the off state or the physical resistance signal is inaccurate, as well as the problem of the charging cable or charger being dragged due to accidental operation of the mobile device, thus enhancing the reliability of the system.

[0043] To further clarify the specific mechanism of wake-up signal generation, this application also provides a preferred embodiment. As mentioned above, the wake-up module can have various implementations; in a preferred embodiment, see [reference needed]. Figure 2 , Figure 2 This is another structural diagram of the charging wake-up system for mobile devices provided in this application. The charging wake-up system 100 includes: a charging interface 110, a wake-up module 120, and a control module 130.

[0044] The charging interface 110 is located on the mobile device and is configured to physically connect with the charging plug on the charger; the wake-up module 120 is connected to the charging interface 110 and is configured to output a wake-up signal when the charging plug is physically connected to the charging interface 110; the control module 130 is connected to the wake-up module 120 and is configured to control the mobile device to enter the charging state and prevent the mobile device from moving in response to the wake-up signal.

[0045] Optionally, the charging interface 110 includes at least a first pin 111 and a second pin 112; the wake-up module 120 includes a shorting component 121 (not shown).

[0046] When the charging plug is physically plugged into the charging interface 110, the shorting component 121 shorts the first pin 111 and the second pin 112 to generate a wake-up signal.

[0047] Specifically, the physical shorting action of the first pin 111 and the second pin 112 forms a signal loop inside the charging interface 110. The connection state of this loop itself constitutes the aforementioned wake-up signal in the form of level change, so that the wake-up signal is completely determined by the mechanical connection state of the contacts, without any analog quantity (such as resistance value) measurement and conversion in between.

[0048] In one embodiment, the shorting component 121 that achieves the shorting can have various structures. For example, it can be a metal shorting bridge piece disposed on the conductive connection part of the charging plug, which presses against the terminals of the first pin 111 and the second pin 112 when inserted; or it can be an elastic contact piece disposed at the socket end that is pushed by the front end of the charging plug, so that it bends and connects the two originally separate fixed contacts during the insertion action.

[0049] Based on the above method, the wake-up signal is triggered by the insertion action between the charging plug and the charging interface 110, without relying on any electrical signals or communication messages provided by the charger side, nor requiring measurement and conversion of the analog resistance signal. This avoids misjudgment of the charging connection status caused by changes in contact resistance, insufficient signal conversion accuracy, or lack of external power supply, effectively improving the reliability and accuracy of the system in identifying the charging connection.

[0050] As another alternative, this application also provides another configuration in which the charging interface 110 includes at least a first pin 111 and a second pin 112; the wake-up module 120 includes a power conversion unit 122, the input of which is connected to the first pin 111 and the second pin 112, and is configured to output a wake-up signal when the first pin 111 and the second pin 112 are shorted.

[0051] Specifically, the power conversion unit 122 obtains input power from the signal loop formed inside the charging interface 110 after the first pin 111 and the second pin 112 are shorted, and starts working. While generating a stable low-voltage working power supply, it also generates a wake-up signal.

[0052] In one embodiment, the power conversion unit 122 may specifically include a DC-DC converter, such as a buck, boost, or buck-boost non-isolated DC-DC converter, or a cascaded combination of multiple converters. The DC-DC converter is configured such that when the first pin 111 and the second pin 112 of the charging interface 110 are shorted due to the physical connection of the charging plug, its input terminal forms a closed loop with the battery pack, thereby obtaining an input voltage and starting operation. The DC-DC converter converts the battery pack voltage into a low-voltage power supply (e.g., 12V) adapted to the operation of the control module 130, and simultaneously generates a wake-up signal, such as an OBC (On-Board Charger) charging wake-up signal, while outputting this low-voltage power supply.

[0053] In other embodiments, the power conversion unit 122 may also include a linear regulator, an isolated power converter, or other voltage conversion circuits. That is, the power conversion unit 122 generally refers to a circuit that obtains input power and outputs voltage and / or generates a wake-up signal by utilizing the closed loop formed when the first pin 111 and the second pin 112 are shorted due to physical insertion. This application does not impose specific limitations on this.

[0054] Based on the above method, the closed loop formed by shorting the pins provides input power to the power conversion unit 122, enabling it to output a wake-up signal simultaneously when starting up. This eliminates the need for an additional independent signal generation circuit, thus improving system integration and reliability.

[0055] To ensure that the possibility of the mobile device being driven is completely eliminated physically and electrically after it enters the charging state, this solution further limits the control strategy of the control module 130. Optionally, the control module 130 is configured to: in response to the mobile device entering the charging state, control the power supply circuit of the mobile device's drive system to disconnect, so that the drive system is in a disabled state.

[0056] In one embodiment, "drive system" generally refers to the components or systems in a mobile device used to generate driving force to move the device. For example, it may include, but is not limited to, an electric motor and its controller, a hydraulic drive assembly, or combinations thereof. "Disabled state" generally refers to a state in which the drive system is unable to output sufficient driving force to move the mobile device. For example, it may include, but is not limited to, a state in which the drive system is completely de-energized by disconnecting the power supply circuit, a state in which the driver output is forcibly disabled by a control signal, or combinations thereof.

[0057] Based on the above method, by disabling the power supply through hardware, even if the control module 130 experiences extreme software failures such as program crashes or logical malfunctions, the drive motor cannot obtain power because the power supply path of the drive system has been physically cut off, thus providing hardware-level safety protection.

[0058] Regarding the above-mentioned solution of disabling the drive system by disconnecting the power supply circuit, this application provides a preferred embodiment. Optionally, the power supply circuit includes a discharge relay; the control module 130 is configured to control the discharge relay to disconnect, so that the drive system is in a disabled state.

[0059] In one embodiment, a discharge relay generally refers to a switching device disposed in a power supply circuit for cutting off the path of electrical energy flowing to the drive system when controlled to disconnect. For example, it may include, but is not limited to, electromagnetic relays, solid-state relays, or other power switches whose on / off state is determined by a control signal, or combinations thereof.

[0060] A discharge relay is connected in series in the power supply circuit. The control output terminal of the control module 130 is connected to the coil part of the discharge relay and is configured to control the contacts of the discharge relay to open when entering the charging state, thereby making the entire power supply circuit from the battery pack to the drive system disconnected.

[0061] Based on the above method, using a discharge relay as the actuating component can fully utilize the advantages of relays, such as clear on / off states, high contact isolation, ability to withstand large current surges, and controllable costs, thereby improving the reliability and maintainability of the safety disabling function.

[0062] To address the sub-problem of unnecessary power consumption and battery drain caused by the control module 130 remaining in standby mode for an extended period after charging is complete, this solution further optimizes the power management strategy of the control module 130.

[0063] Optionally, the control module 130 is also configured to enter a sleep state after a preset time in response to detecting a full charge signal indicating that the mobile device has finished charging.

[0064] In one embodiment, a full charge signal generally refers to an indication signal that indicates the mobile device's battery has completed charging or reached full charge conditions. For example, it may include, but is not limited to: an internal full charge flag signal generated by the battery management system based on parameters such as battery voltage, current, and temperature; a charging completion indication signal from the charger; or a combination thereof. A sleep state generally refers to a low-power operating mode in which the control module 130 or related modules are located, in which some functions are disabled or their operating frequency is reduced to decrease power consumption. For example, it may include, but is not limited to: disabling the communication interface, stopping some sampling loops, entering a standby low-current mode that retains only minimal wake-up logic, or a combination thereof. A preset time generally refers to the delay time set from receiving the full charge signal to the system entering a sleep state. This preset time can be set according to actual needs; for example, it can be set to five minutes.

[0065] The specific implementation methods for the control module 130 to enter a sleep state after a preset time in response to the detection of a full charge signal indicating that the mobile device is fully charged can include: starting a timer based on an internal real-time clock or hardware timer, completing balancing, data recording, and other finishing operations during the timer, and automatically entering sleep mode after the timer expires; or using a software state machine to jump to a delayed waiting state after full charge, and switching to sleep mode after finishing the finishing operations; or using an independent low-power timer to trigger sleep mode when the timer expires; or using an external delay circuit to start a delay with the full charge signal, and outputting a control signal to trigger sleep mode after the delay expires. These methods can be used individually or in combination, and the preset time can be set according to battery characteristics or user needs.

[0066] Based on the above method, by setting a certain delay, execution time is provided for the final confirmation of the battery status after full charging, equalization management, and historical data storage. This avoids interruption of the system management process or loss of data records due to immediate hibernation. Furthermore, after unnecessary work is completed, the control module 130 can be automatically switched to a very low power hibernation mode, which significantly reduces the ineffective consumption of the battery and optimizes the energy efficiency performance of the system when it is left unattended for a long time.

[0067] In conjunction with the aforementioned full-charge sleep logic, this solution imposes corresponding limitations on the behavior of the control module 130 in non-full-charge situations so that users can accurately distinguish whether the charging process is completed normally or interrupted due to a fault.

[0068] Optionally, the control module 130 is also configured to maintain a standby state in response to the absence of a fully charged signal indicating that the mobile device has completed charging.

[0069] In one embodiment, standby state generally refers to a state in which the control module 130 (such as a battery management system) or related modules are under normal power supply and do not need to perform the main charging task, but maintain monitoring and response to predetermined events or signals. For example, it may include, but is not limited to: maintaining sensor power supply and communication listening, waiting for external wake-up signals or fault recovery.

[0070] When the charging process is prematurely terminated due to various faults such as overvoltage, overtemperature, or communication interruption of a single cell, and the battery has not reached the full charge standard, the control module 130 will remain in standby mode because it does not receive a full charge signal, and will not enter hibernation mode. Hibernation mode is equivalent to normal charging completion; standby mode without charging is equivalent to an abnormality in the charging process. Users or maintenance personnel can use this to determine whether the lithium battery system has undergone a complete normal charging cycle, which facilitates troubleshooting and maintenance.

[0071] The specific implementation methods for the control module 130 to maintain a standby state in response to the absence of a full charge signal indicating that the mobile device is fully charged can include: continuously monitoring the full charge flag bit based on software logic; if the flag bit is not set within the expected time, it is determined that the device is not fully charged, and the control module 130 remains in standby mode and does not perform a sleep operation; or based on a state machine design, when no full charge signal is received after a charging interruption, the state remains in standby mode, continuously monitoring the battery status and communication signals; or based on a hardware detection circuit, when the full charge signal pin does not trigger a valid level after charging is completed, the control module 130 blocks the sleep command and maintains normal operation mode. All of the above methods can be used individually or in combination, ensuring that the control module 130 always maintains an observable standby state when the device is not fully charged, thus distinguishing between sleep mode after a normal full charge and abnormal interruption.

[0072] Based on the above method, when the system fails to reach full charge due to a fault interruption, it remains in standby mode and will not enter sleep mode. Therefore, users or maintenance personnel can intuitively determine whether the charging process has been completed normally by checking whether the control module 130 is in sleep mode, enhancing the observability and maintainability of the charging status.

[0073] See Figure 3 , Figure 3 This is another structural schematic diagram of the charging wake-up system for mobile devices provided in this application. The charging wake-up system 100 includes: a charging interface 110, a wake-up module 120, and a control module 130.

[0074] The charging interface 110 is located on the mobile device and is configured to physically connect with the charging plug on the charger (not shown). The wake-up module 120 is connected to the charging interface 110 and is configured to output a wake-up signal when the charging plug is physically connected to the charging interface 110. The control module 130 is connected to the wake-up module 120 and is configured to control the mobile device to enter the charging state and prevent the mobile device from moving in response to the wake-up signal.

[0075] Specifically, the charging interface 110 on the mobile device side includes multiple pins, such as CAN1H and CAN1L pins, for CAN communication between the control module 130 and external devices; and power positive and negative pins for transmitting charging current. Pin 2 (i.e., the first pin) and pin 3 (i.e., the second pin) are used to provide a wake-up signal. The input of the power conversion unit 122 (e.g., DC-DC converter) is connected to pins 2 and 3 respectively, and the output of the DC-DC converter is connected to the signal receiving terminal (e.g., the OBC pin) of the control module 130 (e.g., the BMS) to input a wake-up signal to the BMS. The mobile device also includes a battery pack, which is connected to the charging interface 110, the BMS, and a discharge relay via a main circuit. The discharge relay controls the on / off state of the circuit supplying power to the drive system.

[0076] An external charging device (such as a charger) is plugged into the charging interface 110 via a charging plug. The charging plug includes pins corresponding to pins 2 and 3 in the charging interface 110, and these two pins are physically shorted by a shorting component 121. When the charging plug is plugged into the charging interface 110, the input terminal of the DC-DC converter is turned on, and a wake-up signal is input to the OBC pin of the BMS. The BMS performs corresponding charging operations based on the signal, manages the charging process of the battery pack, and performs corresponding control operations, such as controlling the discharge relay to disconnect to prevent the drive system from working.

[0077] In addition, the main circuit typically includes devices such as charging relays, fuses, and current sensors (not shown) connected in series to control the charging circuit and monitor the circuit current. The battery pack is also usually connected to a main relay to control the overall on / off state of the battery pack. The control module 130 is connected to the coils of the charging relay, discharging relay, and main relay via signal lines to control the activation and deactivation of each relay, thereby controlling the charging process.

[0078] See Figure 4 , Figure 4 This is a flowchart illustrating a charging wake-up method for a mobile device provided in an embodiment of this application. The mobile device includes a charging interface, a wake-up module, and a control module. The wake-up module is connected to the charging interface, and the control module is connected to the wake-up module. The control module is used to perform the following steps: Step S41: When the charging interface is physically plugged into the charging plug on the charger, the wake-up signal output by the wake-up module is obtained.

[0079] In one specific implementation, this physical mating process causes a change in the electrical connection state between at least two independent pins within the charging interface, for example, from open to shorted. This change triggers the operation of the wake-up module. Optional forms of the wake-up signal include, but are not limited to, a digital signal transition from low to high, a pulse sequence of a specific frequency, or a power supply voltage valid indicator signal.

[0080] Step S42: In response to the wake-up signal, control the mobile device to enter the charging state, and prevent the mobile device from moving while in the charging state.

[0081] The logic for implementing this control can be implemented in the microcontroller program of the control module (e.g., the battery management system), where a wake-up signal is set as the highest priority trigger event. Once this event is detected, the system state machine is immediately switched to charging mode, and a series of safety operations are executed, including outputting a disconnect command to the switching devices in the power supply circuit.

[0082] It should be noted that the direct detection and signal conversion of the physical insertion action in step S41 provides the control module in step S42 with a charging connection signal that does not depend on any signal from the charger side. This enables the method to reliably establish a charging connection even when the charger is completely powered off and there is no power output to the outside world, thereby solving the dragging risk that may be caused by the inability to identify the charging connection status.

[0083] The following describes a specific application scenario: the operator plugs the electric forklift's charging port into the charger's charging plug. At this time, the charger's power switch is off, and its output terminal has no voltage or communication signal. After physical plugging, the first and second pins of the charging port are physically shorted by the shorting bridge inside the plug, forming a closed circuit.

[0084] The power conversion unit in the wake-up module receives voltage from the battery pack itself at its input, converts the battery voltage to a stable 12V low-voltage power supply, and simultaneously outputs a wake-up signal while supplying power to the battery management system. Upon receiving the wake-up signal, the battery management system triggers its highest-priority internal interrupt, switching the system state from standby mode to charging mode. Then, the battery management system sends a disconnect command to the discharge relay connected in series in the power supply circuit of the drive system through its control output port. The discharge relay reliably disconnects within tens of milliseconds, cutting off the entire power supply path from the battery pack to the drive motor, rendering the forklift completely immobile.

[0085] Simultaneously, the battery management system (BMS) initiates the charging management program normally, opening the charging interface to charge the battery pack. Once the BMS detects a full charge signal indicating completion, it performs battery equalization and records charging history data during a five-minute delay. After five minutes, the BMS forces itself into a deep sleep state, reducing system power consumption to extremely low levels.

[0086] If charging is interrupted due to cell overheating or communication malfunctions, and the battery fails to reach full charge, the battery management system will not receive the full charge signal. In this case, the system will remain in standby mode and will not enter hibernation. Maintenance personnel or operators can determine the situation through the status indicator lights or monitoring interface of the battery management system: if the system is in hibernation, it indicates that the charging process has been completed normally and fully; if the system is still in standby and the battery level is not as expected, it indicates an abnormality in charging and further investigation is required.

[0087] When the operator is ready to start the forklift, the charging plug is unplugged from the charging interface. At this time, the physical short circuit between the first and second pins is released, the input circuit of the wake-up module returns to the disconnected state, the wake-up signal disappears, the battery management system detects the loss of the wake-up signal, executes the state switch to exit the charging state, re-engages the discharge relay, restores the power supply path to the drive system, and the forklift resumes normal driving capability.

[0088] In the aforementioned scenarios, the charging wake-up system of this application transforms the charging safety of forklifts from passively relying on charger signals to a fully autonomous, physically triggered protection mechanism. This eliminates dragging accidents caused by operator negligence or charger shutdown, significantly improving operational safety in industrial settings. Simultaneously, the full-charge delay sleep mode and fault standby hold functions optimize the system's long-term power consumption and provide a basis for determining the charging process's status, reducing diagnostic time during equipment maintenance.

[0089] See Figure 5 , Figure 5 This is a schematic diagram of the structure of a mobile device provided in an embodiment of this application. The mobile device 500 includes: a power battery 510, a drive system 520, and a charging wake-up system 530.

[0090] The drive system 520 is connected to the power battery 510; the charging wake-up system 530 is connected to the power battery 510 and the drive system 520. The charging wake-up system 530 is the charging wake-up system 100 of the mobile device as described above. For details about the charging wake-up system 100 of the mobile device, please refer to the specific description of the relevant technology, which will not be repeated here.

[0091] See Figure 6 , Figure 6This is a schematic diagram of the structure of a charging plug provided in an embodiment of this application. The charging plug 600 is used to physically plug into the charging interface of any of the aforementioned mobile devices. The mobile device includes a wake-up module, which is configured to output a wake-up signal in response to the physical plugging action. The charging plug 600 includes a main body 610 and a shorting component 620.

[0092] The shorting component 620 is disposed on the main body 610 and is configured to short at least two pins of the charging interface when the charging plug 600 is physically plugged into the charging interface, so as to trigger the wake-up module to output a wake-up signal.

[0093] The shorting component 620 is specifically configured to physically engage with electrical contacts (e.g., the first and second pins) on the charging interface when the charging plug is physically inserted into the charging interface, altering the electrical state of the wake-up module inside the mobile device. Specifically, the first and second pins are electrically shorted together, thereby creating a closed electrical circuit for the input of the wake-up module, triggering its output wake-up signal. The charging plug can be a slow charging plug or a fast charging plug. The conductive connection portion of the slow charging plug may not have any specific resistance value resistors or related signal terminals for providing CC2 connection confirmation; instead, it only provides a conductor bridge for creating short-circuit connections of specific pins, achieving perfect coupling with the mobile device-side solution through simple internal shorting wires or shorting contacts.

[0094] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0095] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0096] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0097] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0098] In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0099] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program verification codes, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0100] Furthermore, it should be noted that the combination of the various technical features in this case is not limited to the combination methods described in the claims of this case or the combination methods described in the specific embodiments. All technical features described in this case can be freely combined or combined in any way, unless they contradict each other.

[0101] It should be noted that the above examples are merely specific embodiments of the present invention, and the present invention is obviously not limited to the above embodiments, with many similar variations. All modifications that can be directly derived or conceived by those skilled in the art from the content disclosed in this invention should fall within the protection scope of this invention.

[0102] It should be understood that the terms "first," "second," etc., mentioned in the embodiments of the present invention are used only to more clearly describe the technical solutions of the embodiments of the present invention, and cannot be used to limit the scope of protection of the present invention.

[0103] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A charging wake-up system for a mobile device, characterized in that, include: A charging port, located on the mobile device, is configured to physically connect to a charging plug on a charger. A wake-up module, connected to the charging interface, is configured to output a wake-up signal when the charging plug is physically inserted into the charging interface; A control module, connected to the wake-up module, is configured to control the mobile device to enter a charging state and prevent the mobile device from moving in response to the wake-up signal.

2. The charging wake-up system for a mobile device according to claim 1, characterized in that, The charging interface includes at least a first pin and a second pin; The wake-up module includes a shorting component, wherein... When the charging plug is physically plugged into the charging interface, the shorting component shorts the first pin and the second pin to generate the wake-up signal.

3. The charging wake-up system for a mobile device according to claim 1, characterized in that, The charging interface includes at least a first pin and a second pin; The wake-up module includes a power conversion unit, the input of which is connected to the first pin and the second pin, and is configured to output the wake-up signal when the first pin and the second pin are shorted.

4. The charging wake-up system for a mobile device according to claim 1, characterized in that, The control module is configured to: in response to the mobile device entering a charging state, control the power supply circuit of the mobile device's drive system to disconnect, so that the drive system is in a disabled state.

5. The charging wake-up system for a mobile device according to claim 4, characterized in that, The power supply circuit includes a discharge relay; the control module is configured to control the discharge relay to disconnect, thereby disabling the drive system.

6. The charging wake-up system for a mobile device according to claim 1, characterized in that, The control module is also configured to enter a sleep state after a preset time in response to detecting a full charge signal indicating that the mobile device has completed charging.

7. The charging wake-up system for a mobile device according to claim 1, characterized in that, The control module is also configured to maintain a standby state in response to the absence of a fully charged signal indicating that the mobile device has completed charging.

8. A charging wake-up method for a mobile device, the mobile device comprising a charging interface, a wake-up module, and a control module, wherein the wake-up module is connected to the charging interface, and the control module is connected to the wake-up module, characterized in that, The control module is used to perform the following steps: When the charging interface is physically plugged into the charging plug provided on the charger, the wake-up signal output by the wake-up module is obtained; In response to the wake-up signal, the mobile device is controlled to enter a charging state, and the mobile device is prohibited from moving in the charging state.

9. A mobile device, characterized in that, include: Power battery; The drive system is connected to the power battery; The wake-up system of the mobile device as described in any one of claims 1-7, wherein the power battery and the drive system are connected.

10. A charging plug for physically inserting into a charging interface of a mobile device, the mobile device including a wake-up module configured to output a wake-up signal in response to the physical insertion action, characterized in that... The charging plug includes: main body; A shorting component, disposed on the main body, is configured to short at least two pins of the charging interface when the charging plug is physically plugged into the charging interface, thereby triggering the wake-up module to output the wake-up signal.

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