Mobile phone intelligent charging and discharging system and control method thereof
By integrating a wireless power transceiver module and a control module into the phone case, the energy flow is dynamically managed, solving the problem that existing mobile phone charging systems cannot be intelligently controlled. This achieves intelligent charging and discharging management and improves the efficiency of mobile phone battery usage.
Patent Information
- Application Number
- CN202511329250.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-17
- Publication Date
- 2025-11-21
AI Technical Summary
Existing mobile phone charging systems cannot intelligently control charging and discharging based on battery status in a timely manner, resulting in insufficient intelligence in charging and discharging and failing to effectively solve the problem of insufficient mobile phone battery.
By combining a wireless power transceiver module with a phone case battery module, the energy flow is dynamically managed through the phone case control module, and charging and discharging strategy commands are generated in conjunction with the phone control application to achieve intelligent control of wireless charging and discharging.
It enables intelligent energy transfer between the phone case battery module and the phone, and can automatically adjust the charging and discharging mode according to the battery status, improving the intelligence and efficiency of charging.
Smart Images
Figure CN120999839A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of mobile phone charging and discharging technology, specifically to a mobile phone intelligent charging and discharging system and its control method. Background Technology
[0002] With the rapid development of mobile communication technology, smartphones have become the core tool for people's daily life, work and entertainment. Phone cases are used to protect phones from accidental drops and collisions, and to prevent the screen and back panel from scratching. They have evolved from a simple anti-drop tool into an essential accessory that combines functionality, fashion and personality.
[0003] With the diversification of mobile phone cases, in order to address the pain point of insufficient battery life of mobile phones, power banks are often combined with mobile phone cases. By setting up a battery integrated circuit inside the phone case, the phone can be charged, thus improving its battery life. However, when using the battery in the phone case to charge the phone, the phone's battery level needs to be monitored first. When the battery level is low, the battery switch needs to be manually turned on, and the phone and case charge through contact. Manually controlling charging and stopping the charging process cannot provide timely replenishment of the phone's power. Furthermore, existing external charging systems cannot actively control charging and discharging based on the phone's battery status, making their charging and discharging control insufficiently intelligent. In view of this, this solution proposes a smart mobile phone charging and discharging system and its control method to solve the above problems. Summary of the Invention
[0004] To address the shortcomings of existing technologies, this invention provides a smart charging and discharging system for mobile phones and its control method, solving the problems mentioned in the background section.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a mobile phone intelligent charging and discharging system, comprising: The phone case itself integrates the following components: Phone case battery module; A wireless power transceiver module is configured between the phone case battery module and the phone to establish a two-way wireless power transmission channel between the phone case battery module and the phone. The phone case control module is communicatively connected to the wireless power transceiver module. The system also includes: A mobile control application used to generate and transmit charging and discharging strategy instructions; The phone case control module is configured as follows: Receive and parse charging and discharging strategy instructions from the mobile control application; Based on the intent of the instruction, a charge / discharge control signal is generated; The wireless power transceiver module is driven by the charging and discharging control signal to dynamically manage the flow and transmission status of energy between the phone case battery module, the phone, and the external environment.
[0006] Preferably, the charging / discharging strategy instruction includes an event-triggered strategy, and the phone case control module is configured as follows: Continuously monitor the battery status broadcast on the mobile device; When the phone battery level drops to a preset first threshold, a first control signal is automatically generated. The first control signal drives the wireless power transceiver module to enter the first working mode, transmitting energy from the phone case battery module to the phone.
[0007] Preferably, the charging / discharging strategy instruction includes a strategy triggered based on the external power supply access status, and the phone case control module is configured as follows: Monitor the status of the charging port on the mobile phone; When the system detects that the phone is connected to a wired external power source and the phone battery is fully charged, it automatically generates a second control signal. The second control signal drives the wireless power transceiver module into the second working mode, switching the energy transmission direction to obtain energy from the mobile phone and charge the phone case battery module.
[0008] Preferably, the charging / discharging strategy instruction includes a strategy triggered by a wireless energy field, and the phone case control module is configured to: Listen for the presence of an external wireless charging field; When it is detected that the mobile phone is in an external wireless charging field and the mobile phone battery is fully charged, a third control signal is automatically generated. The third control signal drives the wireless power transceiver module into a third working mode, configuring it as a receiver to capture energy from an external wireless charging field and charge the phone case battery module.
[0009] Preferred options also include: The mobile phone control application is further configured to establish a two-way data synchronization channel; The phone case control module is further configured as follows: Through the bidirectional data synchronization channel, the real-time status parameters of the phone case battery module are actively reported to the mobile phone control application. The mobile phone control application dynamically generates and visualizes the charging and discharging recommendation strategy for the phone case body based on the received status parameters.
[0010] Preferably, the mobile phone control application provides an interactive interface to receive user confirmation or modification instructions for the suggested strategy, and sends the final determined charging and discharging strategy instruction to the mobile phone case control module through the bidirectional data synchronization channel.
[0011] A control method for a mobile phone intelligent charging and discharging system, used to control the mobile phone intelligent charging and discharging system, the method comprising: Strategy delivery steps: The mobile phone generates charging and discharging strategy instructions and sends them to the phone case control module; Status monitoring steps: The phone case control module and the mobile phone work together to continuously monitor predefined trigger events; Decision execution steps: When the monitored event matches the conditions in the policy instruction, the phone case control module determines the target energy transmission mode and drives the wireless energy transceiver module to perform the corresponding energy flow control operation.
[0012] Preferably, the decision execution step includes multiple energy transfer modes, wherein: In the first mode, control the flow of energy from the phone case battery module to the phone battery; In the second mode, energy is controlled to flow wirelessly in reverse from the fully charged phone to the phone case battery module. In the third mode, energy is controlled to flow directly from the external wireless charging field to the phone case battery module.
[0013] Preferred options also include: Safety closed-loop control steps: Key performance parameters are monitored in real time during energy transfer. The monitored parameters are compared with safety thresholds; When any parameter exceeds the safety threshold, an interrupt signal is generated and the safety protocol is executed first, overriding the currently executing charging and discharging strategy, and adjusting or stopping energy transfer.
[0014] Preferably, the policy instruction generated in the policy issuance step is one or more conditional rules with priority; The decision execution steps include arbitrating multiple conditional rules that are triggered simultaneously according to their priority, and executing the energy transfer mode corresponding to the rule with the highest priority.
[0015] This invention discloses a charging phone case, which has the following beneficial effects: (1) By adding a wireless power transceiver module, the present invention enables the phone case battery module to wirelessly charge the phone through the interaction between the wireless power transceiver module and the phone case battery module, and enables the phone case battery module to execute charging and discharging control strategies through the phone control application, making the charging and discharging system more intelligent.
[0016] (2) The mobile phone case control module of the present invention can monitor the existence of the external wireless charging field. When it is detected that the mobile phone is in the external wireless charging field and the mobile phone battery is fully charged, the mobile phone case control module drives the wireless energy transceiver module to switch to receiving mode and capture energy from the external wireless charging field to charge the mobile phone case battery module. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a block diagram of the system configuration of the present invention.
[0019] Figure 2 This is a flowchart illustrating the charging and discharging operation of the present invention.
[0020] In the diagram: 100, phone case body; 110, phone case battery module; 120, wireless power transceiver module; 130, phone case control module; 200, phone terminal; 210, phone control application. Detailed Implementation
[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. To better understand the above technical solutions, the above technical solutions will be described in detail below with reference to the accompanying drawings and specific embodiments.
[0022] refer to Figure 1 and Figure 2 As shown; Example 1: This invention discloses a smart charging and discharging system for mobile phones, comprising: The phone case body 100 integrates the following internal components: Phone case battery module 110; A wireless power transceiver module 120 is configured between the phone case battery module 110 and the mobile phone terminal 200 to establish a bidirectional wireless power transmission channel between the phone case battery module 110 and the mobile phone terminal 200. The mobile phone case control module 130 is communicatively connected to the wireless power transceiver module 120; It should be noted that the wireless power transceiver module 120 consists of a power switching network, an LC resonant network, and a gate driver; The power switching network consists of four or more MOSFETs (metal-oxide-semiconductor field-effect transistors) forming an H-bridge (full-bridge) or half-bridge structure. The gates of these MOSFETs are controlled by gate drivers. The power switching network is directly connected to the positive and negative terminals of the mobile phone case battery module 110 as the energy input or output terminal, and its output terminal is connected to the LC resonant network. An LC resonant network serves as both a transmitting and receiving antenna for energy. In transmitting mode, the LC resonant network generates an alternating magnetic field through resonance; in receiving mode, it captures the energy of an external magnetic field through resonance. One end of the LC resonant network is connected to the output of a power switching network, while the other end is grounded or connected to another phase of the power switching network. The capacitor (C) and coil (L) are connected in series or parallel resonance, and the choice of topology depends on the target power and efficiency.
[0023] The gate driver is located between the phone case control module 130 and the power switch network. Since the PWM (Pulse Width Modulation) signal generated by the phone case control module 130 has weak voltage and current capabilities, it cannot directly and quickly drive the gate capacitance of the MOSFET. The function of the gate driver is to amplify the PWM signal of the phone case control module 130, provide a sufficiently large voltage and current, and turn the MOSFET on and off at a very high speed, thereby reducing switching losses and improving system efficiency. The phone case control module 130 outputs the PWM signal to the gate driver through the general-purpose input / output pin.
[0024] The phone case control module 130 is responsible for executing control algorithms, determining operating modes, processing communication protocols, and implementing safety protection. In this design, a sensing and monitoring circuit is also included to provide real-time system status data to the phone case control module 130, enabling closed-loop control and safety protection. The sensing and monitoring circuit includes a current sensing amplifier (with a series sampling resistor or a Hall sensor), a voltage divider circuit, and an NTC temperature sensor. Their outputs are connected to the analog-to-digital converter pins of the phone case control module 130.
[0025] The system also includes: Mobile phone control application 210 is used to generate and transmit charging and discharging strategy instructions; The phone case control module 130 is configured as follows: Receive and parse charging and discharging strategy instructions from the mobile phone control application 210; Based on the intent of the charge / discharge strategy command, generate charge / discharge control signals; The wireless power transceiver module 120 is driven by charge and discharge control signals to dynamically manage the flow and transmission status of energy between the phone case battery module 110, the mobile phone 200, and the external environment.
[0026] It should be noted that the phone case control module 130 is connected to the sensing and monitoring circuit (used to detect current, voltage, temperature and remaining power) through the analog-to-digital converter pin; it is connected to the communication module (Bluetooth) of the mobile phone 200 through the UART / SPI / I2C interface and interacts with the mobile phone control application 210.
[0027] When calculating the remaining power of the phone case battery module 110 after charging, the phone case control module 130 first records the initial remaining power of the phone case battery module 110. Then, the phone case control module 130 periodically samples the current and performs numerical integration calculations; expressed as: (1); Here, SOC0 represents the initial remaining power of the phone case battery module 110. This indicates the rated capacity of the phone case battery module 110. This represents the instantaneous current sampled by the phone case control module 130 when the phone case battery module 110 is in charging mode. A positive number indicates that the phone case battery module 110 is in discharge mode. It is a negative number; t represents time.
[0028] Specifically, a two-way data synchronization channel is established in the mobile phone control application 210. The status parameters of the mobile phone case battery module 110 are obtained in real time through the two-way data synchronization channel, and multiple event triggering conditions are arbitrated based on preset priority rules to generate dynamic charging and discharging strategy instructions. The wireless power transceiver module 120 switches between the following modes according to the instructions: First working mode: Energy flows from the phone case battery module 110 to the phone 200; Second working mode: Energy flows in reverse from the fully charged mobile phone end 200 to the mobile phone case battery module 110; The third working mode: Capture energy from an external wireless charging field to charge the phone case battery module 110.
[0029] Additionally, a charging stage flag is set in the bidirectional data synchronization channel. Based on this charging stage flag, the phone case control module 130 delays the activation of the second working mode to avoid entering the trickle stage at the end of charging. More specifically, the charge / discharge strategy includes three operating modes: The first type includes event-triggered charging / discharging strategy instructions, whereby the phone case control module 130 is configured as follows: Continuously monitor the battery status broadcast on the mobile device (200); When the phone battery level drops to a preset first threshold, a first control signal is automatically generated. The wireless power transceiver module 120 is driven to enter the first working mode by the first control signal, and power is transmitted from the phone case battery module 110 to the mobile phone 200.
[0030] The second type includes charging and discharging strategy instructions based on external power supply access status, and the phone case control module 130 is configured as follows: Monitor the status of the charging port on the mobile phone (200V). When the system detects that the phone is connected to a wired external power source and the phone battery is fully charged, it automatically generates a second control signal. The second control signal drives the wireless power transceiver module 120 to enter the second working mode, switching the energy transmission direction to obtain energy from the mobile phone 200 and charge the mobile phone case battery module 110. It should be noted that after the mobile phone 200 is fully charged by the wired external power supply, the wired external power supply can continue to transmit power to the mobile phone 200. The transmitted power is then used to charge the mobile phone case battery module 110 inside the mobile phone case through reverse charging within the mobile phone 200.
[0031] The third type includes charging and discharging strategy instructions based on wireless energy field triggering strategies, whereby the phone case control module 130 is configured as follows: Listen for the presence of an external wireless charging field; When it is detected that the mobile phone 200 is in an external wireless charging field and the mobile phone battery is fully charged, a third control signal is automatically generated. The wireless power transceiver module 120 is driven into a third operating mode by a third control signal, and configured as a receiver to capture the energy of the external wireless charging field and charge the phone case battery module 110.
[0032] It should be noted that the three charging and discharging strategies are implemented by the phone case control module 130 by controlling the switching timing of the MOSFETs in the power switching network to change the direction of energy flow. Mode 1: Transmission mode, which is for charging the phone; Command reception: The phone case control module 130 receives the command "charge the phone" from the phone control application 210.
[0033] Mode Configuration: The phone case control module 130 configures the power switch network to full-bridge / half-bridge inverter mode.
[0034] PWM drive: The phone case control module 130 generates a complementary PWM signal of a specific frequency (100-205kHz), which is amplified by the gate driver and then drives the two sets of MOSFETs on the diagonal of the H bridge respectively.
[0035] Process: The PWM signal turns on MOSFETs Q1 and Q4, while turning off MOSFETs Q2 and Q3. Current flows from the positive terminal of the phone case battery module 110 through MOSFET Q1 to the coil, then to MOSFET Q4, and finally to the negative terminal. In the next half-cycle, the PWM signal flips, turning on MOSFETs Q2 and Q3, and turning off MOSFETs Q1 and Q4, reversing the current direction. This cycle repeats, generating a high-frequency alternating current in the coil. MOSFETs Q1, Q2, Q3, and Q4 are used as electronic switches, representing the four arms of the H-bridge. MOSFET Q1 is the upper arm switch of the P-MOSFET, MOSFET Q2 is the upper arm switch of the P-MOSFET in the other direction, MOSFET Q3 is the lower arm switch of the N-MOSFET, and MOSFET Q4 is the lower arm switch of the N-MOSFET in the other direction. The coil is located in the middle of the four sets of electronic switches. The PWM signal continuously controls the two pairs of switches (MOSFET Q1 / MOSFET Q4 and MOSFET Q2 / MOSFET Q3) to alternately turn on and off, generating a high-frequency alternating current with a constantly changing direction in the coil. In actual operation, it is necessary to ensure that the two switches on the same side cannot be turned on at the same time, otherwise it will cause a direct short circuit between the positive and negative terminals of the power supply and burn out the MOSFET. A delay time needs to be set in the control signal, that is, after one switch is completely turned off, there is a slight delay before the other switch is turned on.
[0036] Resonant emission: The alternating current passes through the LC resonant network and generates an alternating magnetic field at its resonant frequency.
[0037] Energy transfer: This magnetic field is captured by the receiving coil of the internal battery pack of the mobile phone, completing the wireless energy transfer.
[0038] Mode 2: Receiving mode, which charges the phone case itself (100), and has two variations: Scenario 1: Capturing energy from an external wireless charging pad; The phone case control module 130 detects the presence of an external magnetic field (through the voltage induced by the coil) and detects that the phone terminal 200 is fully charged, or receives a command from the phone control application 210; the phone case control module 130 configures the power switch network to synchronous rectifier mode; the external magnetic field induces a high-frequency AC voltage in the LC resonant network; the phone case control module 130 generates a PWM signal that is synchronized with the voltage phase across the coil by detecting the voltage phase across the coil, and controls the MOSFET to turn on and off. Synchronous rectification utilizes the low on-resistance of the MOSFET to reduce voltage drop and heat loss, which significantly improves charging efficiency.
[0039] Process: When the induced voltage is in the positive half-cycle, control MOSFETs Q1 and Q4 to turn on (at this time they are equivalent to low-resistance switches), and direct the positive half-cycle current to the phone case battery module 110; when the induced voltage is in the negative half-cycle, control MOSFETs Q2 and Q3 to turn on, and reverse the negative half-cycle current to the positive direction and direct it to the phone case battery module 110.
[0040] Scenario 2: Recirculating energy from a fully charged phone; The phone case control module 130 receives an energy return command from the phone control application 210, or detects that the phone terminal 200 connected for charging is fully charged; the wireless charging chip inside the phone terminal 200 is activated and enters the transmission mode, and the energy of the battery of the phone terminal 200 is emitted outward through the coil of the phone terminal 200 to emit a magnetic field; the phone case control module 130 of the phone case body 100 detects this magnetic field and then enters the above-mentioned receiving mode, and captures the energy through synchronous rectification and stores it in the phone case battery module 110.
[0041] Specifically, the mobile control application 210 is further configured to establish a two-way data synchronization channel; The phone case control module 130 is further configured as follows: Through a two-way data synchronization channel, the real-time status parameters of the phone case battery module 110 are actively reported to the mobile phone control application 210. Based on the received status parameters, the mobile phone control application 210 dynamically generates and visualizes the charging and discharging recommendation strategy of the mobile phone case body 100.
[0042] Furthermore, the mobile phone control application 210 provides an interactive interface that uses charts and progress bars to display the real-time status parameters (voltage, current, temperature, and remaining battery power) of the phone case. It receives user confirmation or modification instructions for suggested strategies, pushes strategy suggestions in the form of cards or pop-ups, and sends the final determined charging and discharging strategy instructions to the phone case control module 130 through a two-way data synchronization channel.
[0043] It should be noted that the phone case control module 130 integrates a system-level low-power Bluetooth chip or has an external low-power Bluetooth module. The phone case control module 130 connects to the low-power Bluetooth module via a UART serial port and exchanges data using AT commands or a custom serial port protocol.
[0044] The mobile control application 210 uses the BLE API provided by the mobile operating system 200 to initiate connection, service discovery, and read / write characteristic values. The communication modes between the mobile control application 210 and the mobile case control module 130 include: Data reporting (from phone case control module 130 to phone control application 210): The phone case control module 130 provides a feature value. When new status data is available, the phone case control module 130 actively sends it to the phone control application 210 via notification or instruction (the phone control application 210 subscribes to this feature value). This method is the most efficient and does not require phone polling.
[0045] Sending instructions (from mobile phone control application 210 to mobile phone case control module 130): Mobile phone control application 210 writes data to another characteristic value of mobile phone case control module 130. The data payload adopts a TLV structure and needs to be strictly defined so that both parties can understand it.
[0046] Example 2: This invention discloses a control method for a mobile phone intelligent charging and discharging system, used to control a mobile phone intelligent charging and discharging system as described in Example 1. The method includes: Strategy delivery steps: The mobile terminal 200 generates a charging and discharging strategy command and sends it to the mobile phone case control module 130; It should be noted that, in the policy distribution step, the mobile control application 210 on the mobile terminal 200 generates one or more policy instructions based on user settings, learned habits, and the current status of the mobile terminal 200 and the mobile case body 100, and distributes them to the mobile case control module 130 through a two-way data synchronization channel. The firmware of the mobile case control module 130 has the ability to parse protocols and store rules.
[0047] Status monitoring steps: The phone case control module 130 and the phone terminal 200 work together to continuously monitor predefined trigger events; It should be noted that the status monitoring step involves the phone case control module 130 and the phone terminal 200 continuously monitoring various status variables inside and outside the entire charging and discharging system. These variables serve as the basis for judging the conditions in the execution operation rules. The monitoring content includes: The phone case control module 130 monitors: internal status: voltage, current (charging / discharging), temperature, and remaining power of the phone case battery module 110 of the phone case body 100. external status: presence of an external wireless charging field (detected by the induced voltage on the coil or Qi protocol communication signal).
[0048] Mobile device 200 monitors the status of its battery (whether it's connected to a wired power source or not) and whether it's placed on a wireless charging pad. The mobile device 200 reports its status to the phone case control module 130 in real-time or periodically via a two-way data synchronization channel. The mobile control application 210 sends the battery information of the mobile device 200 to the phone case control module 130 every 5 seconds. The phone case control module 130 aggregates all information to form a complete system status view. The phone case control module 130 operates through hardware interrupts and status flags. When it detects a voltage change at a specific frequency on the coil, it triggers an external interrupt, indicating that external power is connected. When the battery level reported by the mobile device 200 is below 65%, it indicates that the mobile device 200's battery is low.
[0049] The status monitoring step utilizes the analog-to-digital converter, voltage comparator, and GPIO peripherals inside the phone case control module 130 to collect sensor data, and receives data sent from the mobile phone terminal 200 through the communication interface of the phone case control module 130.
[0050] Decision execution steps: When the monitored event matches the conditions in the policy instruction, the phone case control module 130 determines the target energy transmission mode and drives the wireless energy transceiver module 120 to perform the corresponding energy flow control operation.
[0051] It should be noted that the decision execution step is that when the monitoring state changes and the condition of a certain rule is met, the phone case control module 130 decides the action to be executed, namely the target energy transmission mode, and drives the wireless energy transceiver module 120 to perform the corresponding operation.
[0052] Furthermore, the decision-making and execution steps include multiple energy transfer modes, among which: In the first mode, control energy flows from the phone case battery module 110 to the phone battery 200; the phone case control module 130 controls the power switching network of the wireless power transceiver module 120 to enter the full-bridge inverter state, converting the DC power of the phone case battery module 110 into high-frequency AC power, which is then transmitted through the coil.
[0053] In the second mode, control energy flows wirelessly from the fully charged mobile phone 200 battery to the phone case battery module 110 via reverse wireless transmission. The phone case control module 130 first needs to request the mobile phone 200 to enter the wireless transmission mode through the communication channel. After the mobile phone 200 cooperates to start its wireless transmission circuit, the phone case control module 130 then controls the wireless energy transceiver module 120 to enter the synchronous rectification state, and the phone case battery module 110 receives the energy sent by the mobile phone 200.
[0054] In the third mode, control energy flows directly from the external wireless charging field to the phone case battery module 110; the phone case control module 130 controls the wireless energy transceiver module 120 to directly enter the synchronous rectification state to capture the energy of the external wireless charging field.
[0055] It should be noted that the mode switching is achieved by the phone case control module 130 reconfiguring the connection and operation mode (inverting or rectifying) of the MOSFET in the power switching network by changing the timing and phase of the PWM signal output from the GPIO to the gate driver. During the mode switching process, the phone case control module 130 directly controls the wireless power transceiver module 120. Therefore, the firmware of the phone case control module 130 contains a state machine to manage the switching logic and timing between different modes.
[0056] Specifically, it also includes: Safety closed-loop control steps: During energy transfer, the phone case control module 130 monitors key performance parameters in real time, including the phone case battery module 110, power MOSFET temperature (using an NTC thermistor), input / output voltage, and input / output current.
[0057] When calculating the power MOSFET temperature, the phone case control module 130 samples the value from the digital-to-analog converter. Since the resistance of the NTC thermistor changes with temperature, the resistance is calculated by measuring the voltage divider, and then the power MOSFET temperature is calculated, expressed as: (2); Where T represents the current temperature, This indicates the reference temperature, set to 25℃. B represents the thermistor coefficient of the NTC thermistor. This indicates the current thermistor value. This indicates the thermistor value at the reference temperature; about The calculation is performed by sampling the voltage divider using an analog-to-digital converter. The calculation is expressed as: (3); in, This indicates the resistance value used to form a voltage divider circuit, connected in series with the NTC thermistor. This indicates the fixed voltage applied to the voltage divider circuit, which can be the power supply voltage or the regulated reference voltage.
[0058] The monitored parameters are compared with safety thresholds; When any parameter exceeds the safety threshold, an interrupt signal is generated and the safety protocol is executed first, overriding the currently executing charging and discharging strategy, and adjusting or stopping energy transfer.
[0059] It should be noted that the safety protocol includes, but is not limited to, reduced power operation, complete cessation of charging, disconnection of battery connection, and sending error codes and alarms to the mobile phone control application 210 via BLE. In implementing the safety protocol, the overcurrent and overvoltage protection circuits are directly designed at the hardware level. Once triggered, the hardware circuit will immediately turn off the MOSFET and then generate an interrupt notification to the mobile phone case control module 130. Furthermore, the analog-to-digital converter of the mobile phone case control module 130 continuously samples the current and voltage. Every 100μs, the mobile phone case control module 130 checks whether the current and voltage values exceed the set safety threshold. If so, the mobile phone case control module 130 immediately stops the PWM output and cuts off the energy transfer.
[0060] Furthermore, the policy instructions generated in the policy issuance step are one or more priority-based conditional rules; The decision execution steps include arbitrating multiple conditional rules that are triggered simultaneously according to their priority, and executing the energy transfer mode corresponding to the highest priority rule.
[0061] As one implementation method, a priority calculation layer is added to the decision-making and execution steps. The phone case control module 130 continuously collects parameters such as the phone's battery status, the remaining power of the phone case battery module 110, and the stability of the external power supply to construct a real-time weight matrix. The weighting factors include urgency (e.g., phone battery below 10% weight = 5, phone case battery below 20% weight = 3), efficiency value (e.g., wireless charging field signal strength > 80% weight = 4), and user preference (preset by the phone control application). When multiple events occur concurrently, the system calculates the weighted total score of each event and executes the mode corresponding to the highest score. For example, a phone battery of 5% + strong wireless field signal (total score 9) will cover the phone case charging demand (total score 3), prioritizing charging the phone.
[0062] This implementation enhances system adaptability and solves the problem of multi-event competition by using a quantitative decision-making model. Simultaneously, the weight matrix is visualized through a two-way data synchronization channel, allowing users to dynamically adjust weight factors within the mobile control application 210 interface, making strategy command generation more tailored to individual scenario needs.
[0063] Specifically, temperature control and dynamic power adjustment are the core components of the charging and discharging management architecture. The system monitors the surface temperature of the phone case battery module and the wireless charging coil in real time through dual temperature sensing channels, while simultaneously acquiring phone battery temperature data through the power management interface at the operating system level. When the temperature at any monitored point exceeds a preset safety threshold (e.g., 45°C), the control module immediately activates a power attenuation algorithm to linearly reduce the wireless power transmission power. Specifically, for every 1°C increase in temperature detected, the output power decreases by 0.5W until the temperature falls back to a safe range. If the temperature continues to rise to a critical threshold (e.g., 55°C), the system triggers a forced charging interruption protection mechanism, suspending all power transmission operations and activating the built-in heat dissipation components. After the temperature sensor feedback value falls below 40°C, charging is gradually resumed at a rate of 10% power increase every 30 seconds to avoid drastic temperature fluctuations.
[0064] The dynamic power allocation logic deeply integrates user behavior perception models and device status analysis. When the mobile control application detects that the screen is on and the phone's battery is below 20%, it indicates that the user is using the device and has an urgent need for charging. At this time, the system automatically removes the regular power limit and increases the wireless charging power to the peak level (e.g., 7.5W). This process is simultaneously linked to the application scenario analysis module. If a high-load application such as a game or video is detected running in the foreground, a dynamic power capping strategy is activated to strictly limit the output power within a safe range (e.g., 3.5W) to control heat accumulation. In the case of external power access, the system implements a multi-source energy coordination mechanism: when a wired charger is connected to the phone, the energy path is automatically switched after the phone is fully charged, so that the phone charges the phone case battery in reverse through the wireless channel; if the phone is on a third-party wireless charger, an energy diversion channel is established, and 40% of the input energy is directly supplied to the phone case battery. This diversion ratio can be adjusted in real time through the application interface.
[0065] As one implementation method, the triggering logic of the state monitoring step is further limited to: when the mobile phone is connected to a wired power source, the mobile phone control application 210 analyzes the charging curve in real time and divides it into three stages: fast charging (0-90%), trickle charging (90%-99%), and saturation maintenance (100%). Reverse charging is only started in the saturation maintenance stage. At this time, the mobile phone charger stops working, and the energy flows directly from the external power source through the mobile phone 200 to the mobile phone case battery module 110. Specifically, a "charging stage flag" is set in the bidirectional data synchronization channel. The mobile phone case control module 130 delays the activation time of the second mode accordingly to avoid entering the trickle stage (95%-100% power) at the end of the charging period. If reverse charging is started immediately at this time, the mobile phone charger is still working, resulting in energy path conflict. This implementation method also optimizes the synchronous rectification circuit of the wireless energy transceiver module 120, improves the Q value of the LC resonant network during reverse charging, and dynamically adjusts the Rs resistance value through formula (3) to improve the energy capture efficiency.
[0066] This implementation eliminates energy path conflicts by accurately identifying the charging stage, and improves recycling efficiency by combining hardware optimization. The "phone port status monitoring" step can be expanded into multi-level status detection, making the "timely charging" goal described in the background technology more consistent with actual physical characteristics.
[0067] Example 3: This invention discloses a smart charging phone case, comprising: Phone case body 100; A phone case battery module 110 integrated within the casing; Wireless power transceiver module 120 integrated within the housing; A mobile phone case control module 130 integrated within the casing; The phone case control module 130 has a built-in strategy parser and mode switching controller; A policy parser, configured to interpret high-level instructions from external sources that describe energy management intentions; The mode switching controller is configured to send low-level control commands to the wireless power transceiver module 120 based on the output of the policy parser, enabling it to seamlessly switch between multiple power transmission modes, including at least: the main power supply mode for charging mobile phones, the regenerative charging mode for drawing power from mobile phones, and the bypass charging mode for drawing power from external wireless fields.
[0068] Specifically, the phone case control module 130 further includes a communication adapter layer, configured as follows: Establish communication sessions with the power management services of different mobile phone operating systems; Translate and forward cross-system instructions and data, enabling the policy parser to uniformly process charging and discharging policy instructions from different mobile devices.
[0069] It should be noted that the policy parser processes the charging and discharging policy instructions sent by the mobile phone control application 210 through the communication adaptation layer. The charging and discharging policy instructions use binary instructions. The mode switching controller is responsible for executing decision execution steps. It receives the abstract intent of the policy parser and translates it into a series of precise, time-strict low-level hardware operation commands. When the policy parser issues an instruction to enter the recycling charging mode, the mode switching controller first requests the mobile terminal 200 to start reverse charging through the communication adaptation layer, then controls the MOSFET bridge of the wireless energy transceiver module 120 to switch from the inverter state to the synchronous rectification state, and finally adjusts the timing and parameters of the synchronous rectification. The communication adaptation layer implements the physical and protocol connection of the bidirectional data synchronization channel, which is the basis for the status monitoring step and the policy distribution step. Depending on the operating system, corresponding drivers or adapter plugins are provided.
[0070] As one implementation method, a magnetic field phase detection circuit is added to the wireless power transceiver module 120. When the mobile phone is detected to be receiving wireless power, the phone case automatically switches to slave mode. A synchronization request is sent through a bidirectional data synchronization channel to maintain a fixed phase difference between the transmission frequency of the mobile phone 200 (110-205kHz according to the Qi protocol) and the receiving frequency of the phone case, preferably 90°. A time-division multiplexing strategy is adopted: during the stable period of the external charging field (>30 seconds), the phone case control module 130 alternately activates the receiving function at a 10ms cycle, with the phone case receiving for the first 3ms and the mobile phone receiving for the last 7ms. Phase synchronization is achieved through the temperature compensation algorithm of formula (2) - because the NTC thermistor value RT changes with the coil temperature, the LC resonant network capacitance value is dynamically corrected to maintain a constant phase difference, so that the overall efficiency of the two devices coexisting reaches more than 85%.
[0071] This implementation addresses inter-device interference through hardware collaboration and timing control, preventing the simultaneous activation of the receiving coils on both the phone (200) and the phone case (100) when the phone is placed on a Qi charging pad, thus avoiding magnetic field coupling interference. Users can select either a "collaboration priority" or "phone case priority" strategy in the phone control application interface, enabling more intelligent coverage of multi-device collaboration scenarios.
[0072] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.
Claims
1. A mobile phone intelligent charging and discharging system, characterized in that, include: The phone case body (100) integrates the following internal components: Phone case battery module (110); A wireless power transceiver module (120) is configured between the phone case battery module (110) and the mobile phone (200) to establish a bidirectional wireless power transmission channel between the phone case battery module (110) and the mobile phone (200). The phone case control module (130) is communicatively connected to the wireless power transceiver module (120); The system also includes: A mobile phone control application (210) is used to generate and transmit charging and discharging strategy instructions; The phone case control module (130) is configured as follows: Receive and parse charging and discharging strategy instructions from the mobile phone control application (210); Based on the intent of the instruction, a charge / discharge control signal is generated; The wireless power transceiver module (120) is driven by the charge and discharge control signal to dynamically manage the flow and transmission status of energy between the phone case battery module (110), the mobile phone (200), and the external environment.
2. The intelligent charging and discharging system for mobile phones according to claim 1, characterized in that: The charging and discharging strategy instructions include an event-triggered strategy, and the phone case control module (130) is configured as follows: Continuously monitor the battery status broadcast on the mobile device (200); When the phone battery level drops to a preset first threshold, a first control signal is automatically generated. The first control signal drives the wireless power transceiver module (120) to enter the first working mode, and transmits energy from the phone case battery module (110) to the mobile phone (200).
3. The intelligent charging and discharging system for mobile phones according to claim 1, characterized in that: The charging and discharging strategy instructions include a strategy triggered based on the external power supply access status, and the phone case control module (130) is configured as follows: Monitor the charging port status of the mobile phone (200); When the system detects that the phone is connected to a wired external power source and the phone battery is fully charged, it automatically generates a second control signal. The second control signal drives the wireless power transceiver module (120) to enter the second working mode, switching the energy transmission direction to obtain energy from the mobile phone (200) and charge the mobile phone case battery module (110).
4. The intelligent charging and discharging system for mobile phones according to claim 1, characterized in that: The charging and discharging strategy instructions include a strategy triggered by a wireless energy field, and the phone case control module (130) is configured as follows: Listen for the presence of an external wireless charging field; When it is detected that the mobile phone (200) is in an external wireless charging field and the mobile phone battery is fully charged, a third control signal is automatically generated. The wireless power transceiver module (120) is driven into a third working mode by the third control signal, and configured as a receiver to capture the energy of the external wireless charging field and charge the phone case battery module (110).
5. A mobile phone intelligent charging and discharging system according to claim 1, characterized in that, Also includes: The mobile phone control application (210) is further configured to establish a two-way data synchronization channel; The phone case control module (130) is further configured as follows: Through the bidirectional data synchronization channel, the real-time status parameters of the phone case battery module (110) are actively reported to the mobile phone control application (210); The mobile phone control application (210) dynamically generates and visualizes the charging and discharging recommendation strategy of the mobile phone case body (100) based on the received status parameters.
6. A mobile phone intelligent charging and discharging system according to claim 5, characterized in that: The mobile phone control application (210) provides an interactive interface, receives user confirmation or modification instructions for the suggested strategy, and sends the final determined charging and discharging strategy instruction to the mobile phone case control module (130) through the bidirectional data synchronization channel.
7. A control method for a mobile phone intelligent charging and discharging system, used to control the mobile phone intelligent charging and discharging system according to any one of claims 1-6, characterized in that, The method includes: Strategy delivery steps: The mobile terminal (200) generates a charging and discharging strategy instruction and sends it to the mobile phone case control module (130). Status monitoring steps: The phone case control module (130) and the phone (200) work together to continuously monitor predefined trigger events; Decision execution steps: When the monitored event matches the conditions in the policy instruction, the phone case control module (130) decides the target energy transmission mode and drives the wireless energy transceiver module (120) to perform the corresponding energy flow control operation.
8. The control method for a mobile phone intelligent charging and discharging system according to claim 7, characterized in that: The decision-making and execution steps include multiple energy transfer modes, among which: In the first mode, control the flow of energy from the phone case battery module (110) to the phone end (200) battery; In the second mode, control energy to flow wirelessly from the fully charged mobile phone (200) to the phone case battery module (110). In the third mode, control energy flows directly from the external wireless charging field to the phone case battery module (110).
9. The control method for a mobile phone intelligent charging and discharging system according to claim 7, characterized in that, Also includes: Safety closed-loop control steps: Key performance parameters are monitored in real time during energy transfer. The monitored parameters are compared with safety thresholds; When any parameter exceeds the safety threshold, an interrupt signal is generated and the safety protocol is executed first, overriding the currently executing charging and discharging strategy, and adjusting or stopping energy transfer.
10. The control method for a mobile phone intelligent charging and discharging system according to claim 7, characterized in that: The policy instruction generated in the policy issuance step is one or more priority-based conditional rules; The decision execution steps include arbitrating multiple conditional rules that are triggered simultaneously according to their priority, and executing the energy transfer mode corresponding to the rule with the highest priority.