Wireless charging method, tire pressure sensor, and storage medium

Abstract

The application discloses a wireless charging method, a tire pressure sensor and a storage medium. The wireless charging method comprises the following steps: during the process of charging a battery by a wireless charging receiving chip, continuously acquiring state data of the battery by a power management chip; and if the state data meets a preset abnormal condition, performing a corresponding preset charging protection task by the power management chip. According to the scheme, the power management chip is introduced into the tire pressure sensor, the state of the battery is monitored, and when the state data of the battery meets the preset abnormal condition, the corresponding preset charging protection task is performed by the power management chip, so that the tire pressure sensor is further damaged in the wireless charging process, and the safety of the tire pressure sensor in the wireless charging process is ensured.

Description

Technical Field

[0001] This application relates to the field of tire pressure sensor technology, and in particular to a wireless charging method, a tire pressure sensor, and a storage medium. Background Technology

[0002] Tire pressure sensors are used to monitor tire pressure and are installed inside the tires. Due to their unique installation location, it has historically been difficult to charge tire pressure sensors, which needed to be replaced once the battery was depleted.

[0003] A new type of tire pressure sensor has emerged that supports wireless charging, integrating hardware that allows charging without removing the tire. However, since the wireless charging process doesn't involve direct contact with the tire pressure sensor, issues such as incompatible external wireless charging coils or power supplies, or misaligned coils, can damage the sensor. In short, tire pressure sensors are at risk of damage from wireless charging. Summary of the Invention

[0004] The main objective of this application is to provide a wireless charging method, a tire pressure sensor, and a storage medium, aiming to solve or improve the problem that tire pressure sensors are at risk of being damaged by wireless charging.

[0005] To achieve the above objectives, this application provides a wireless charging method applied to a tire pressure sensor. The tire pressure sensor includes a wireless charging receiver chip, a power management chip, and a battery. The wireless charging method includes: During the charging process of the wireless charging receiver chip, the power management chip continuously acquires the status data of the battery. If the status data meets the preset abnormal conditions, the corresponding preset charging protection task will be executed through the power management chip.

[0006] Optionally, the status data includes temperature data. After the step of continuously acquiring the battery status data through the power management chip during the wireless charging receiver chip's charging process, and before the step of executing a corresponding preset charging protection task through the power management chip if the status data meets preset abnormal conditions, the method further includes: If the temperature data is between a preset first threshold and a preset second threshold, then the temperature data is determined to meet a preset first abnormal condition, wherein the preset second threshold is greater than the preset first threshold, and the preset second threshold is the highest design temperature of the tire pressure sensor; If the temperature data exceeds the preset second threshold, then the temperature data is determined to meet the preset second abnormal condition; The step of executing a corresponding preset charging protection task through the power management chip if the status data meets preset abnormal conditions includes: If the temperature data meets the preset first abnormal condition, the power management chip reduces the charging power of the wireless charging receiver chip to the battery, so as to lower the temperature of the battery. If the temperature data meets the preset second abnormal condition, the power management chip will stop the wireless charging receiver chip from charging the battery, so as to reduce the temperature of the battery.

[0007] Optionally, the status data includes voltage data. After the step of continuously acquiring the battery status data through the power management chip during the wireless charging receiver chip's charging process, and before the step of executing a corresponding preset charging protection task through the power management chip if the status data meets preset abnormal conditions, the method further includes: If the voltage data is between a preset third threshold and a preset fourth threshold, then the voltage data is determined to meet a preset third abnormal condition, wherein the preset fourth threshold is greater than the preset third threshold; If the voltage data exceeds the preset fourth threshold, then the voltage data is determined to meet the preset fourth abnormal condition; The step of executing a corresponding preset charging protection task through the power management chip if the status data meets preset abnormal conditions includes: If the voltage data meets the preset third abnormal condition, the power management chip will reduce the voltage at which the wireless charging receiver chip charges the battery. If the voltage data meets the preset fourth abnormal condition, the power management chip will stop the wireless charging receiver chip from charging the battery.

[0008] Optionally, the status data includes current data. After the step of continuously acquiring the battery status data through the power management chip during the wireless charging receiver chip's charging process, and before the step of executing a corresponding preset charging protection task through the power management chip if the status data meets preset abnormal conditions, the method further includes: If the current data is between a preset fifth threshold and a preset sixth threshold, then the current data is determined to meet a preset fifth abnormal condition, wherein the preset sixth threshold is greater than the preset fifth threshold; If the current data exceeds the preset sixth threshold, then the current data is determined to meet the preset sixth abnormal condition; The step of executing a corresponding preset charging protection task through the power management chip if the status data meets preset abnormal conditions includes: If the current data meets the preset fifth abnormal condition, the power management chip will reduce the current supplied by the wireless charging receiver chip to the battery. If the current data meets the preset sixth abnormal condition, the power management chip will stop the wireless charging receiver chip from charging the battery.

[0009] Optionally, the power management chip is connected to an external resistor, and the step of reducing the charging current of the wireless charging receiver chip to the battery through the power management chip includes: The power management chip adjusts the resistance value of the external resistor based on the current data to reduce the charging current of the wireless charging receiver chip to the battery.

[0010] Optionally, the tire pressure sensor is communicatively connected to the vehicle, and the wireless charging method further includes: Generate charging status information based on the status data; The charging status information is sent to the vehicle so that the vehicle can receive and push the charging status information.

[0011] Optionally, the wireless charging method further includes: If the status data meets the preset abnormal conditions, then the corresponding abnormal type is determined; Generate alarm notification information based on the anomaly type; The alarm notification information is sent to the vehicle so that the vehicle can receive and push the alarm notification information.

[0012] Optionally, the wireless charging method further includes: When the wireless charging receiver chip detects an external wireless charging coil based on impedance matching, it sends a charging enable command to the power management chip. The power management chip receives the charging enable command and controls the wireless charging receiver chip to charge the battery according to the charging enable command.

[0013] This application also proposes a tire pressure sensor, which includes a memory, a processor, and a wireless charging program stored in the memory and executable on the processor. When the wireless charging program is executed by the processor, it implements the steps of the wireless charging method described above.

[0014] This application also proposes a computer-readable storage medium storing a wireless charging program, which, when executed by a processor, implements the steps of the wireless charging method described above.

[0015] The wireless charging method, tire pressure sensor, and storage medium proposed in this application mainly involve the power management chip continuously acquiring battery status data during the charging process of the battery by the wireless charging receiving chip. If the status data meets preset abnormal conditions, the power management chip executes a corresponding preset charging protection task. Based on this application's solution, a power management chip is introduced into the tire pressure sensor, enabling monitoring of the battery status. Furthermore, when the battery status data meets preset abnormal conditions, the power management chip executes a corresponding preset charging protection task to prevent further damage to the tire pressure sensor during wireless charging, ensuring the safety of the tire pressure sensor during the wireless charging process. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the functional modules of the tire pressure sensor belonging to the wireless charging device of this application; Figure 2 This is a schematic flowchart of a first exemplary embodiment of the wireless charging method of this application; Figure 3 is a schematic flowchart of a second exemplary embodiment of the wireless charging method of this application; Figure 4 is a schematic flowchart of a third exemplary embodiment of the wireless charging method of this application; Figure 5 is a schematic flowchart of the fourth exemplary embodiment of the wireless charging method of this application; Figure 6 This is a schematic diagram of the fifth exemplary embodiment of the wireless charging method of this application; Figure 7 This is a schematic diagram of the sixth exemplary embodiment of the wireless charging method of this application; Figure 8 This is a schematic flowchart of the seventh exemplary embodiment of the wireless charging method of this application; Figure 9 This is a schematic diagram of the eighth exemplary embodiment of the wireless charging method of this application; Figure 10 This is a schematic diagram of some functional modules of the wireless charging transmitter and receiver involved in the wireless charging method of this application; Figure 11 This is a schematic diagram of the wireless charging receiver chip and external circuit involved in the wireless charging method of this application. Figure 12 This is a schematic diagram of the power management chip and external circuit involved in the wireless charging method of this application.

[0017] Explanation of icon numbers:

[0018] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0020] The main solution of this application embodiment is as follows: during the charging process of the battery by the wireless charging receiver chip, the power management chip continuously acquires the battery's status data; if the status data meets preset abnormal conditions, the power management chip executes a corresponding preset charging protection task. Based on this application solution, a power management chip is introduced into the tire pressure sensor, realizing the monitoring of the battery status, and when the battery status data meets preset abnormal conditions, the power management chip executes a corresponding preset charging protection task to avoid further damage to the tire pressure sensor during the wireless charging process, ensuring the safety of the tire pressure sensor during the wireless charging process.

[0021] Specifically, refer to Figure 1 , Figure 1 This is a schematic diagram of the functional modules of the tire pressure sensor of this application. The tire pressure sensor can be wirelessly charged.

[0022] In this embodiment, the tire pressure sensor includes at least an output module 110, a processor 120, a memory 130, and a communication module 140. Besides... Figure 1 The functional modules shown include a wireless charging receiver chip, a power management chip, and a battery.

[0023] The memory 130 stores the operating system and wireless charging program. The tire pressure sensor can store battery status data, preset abnormal conditions, preset charging protection tasks, and other information in the memory 130. The output module 110 can be a display screen, etc. The communication module 140 can include a WIFI module, a mobile communication module, and a Bluetooth module, etc., and communicates with external devices or servers through the communication module 140.

[0024] When the wireless charging program in memory 130 is executed by the processor, it performs the following steps: During the charging process of the wireless charging receiver chip, the power management chip continuously acquires the status data of the battery. If the status data meets the preset abnormal conditions, the corresponding preset charging protection task will be executed through the power management chip.

[0025] Furthermore, when the wireless charging program in memory 130 is executed by the processor, it also performs the following steps: If the temperature data is between a preset first threshold and a preset second threshold, then the temperature data is determined to meet a preset first abnormal condition, wherein the preset second threshold is greater than the preset first threshold, and the preset second threshold is the highest design temperature of the tire pressure sensor; If the temperature data exceeds the preset second threshold, then the temperature data is determined to meet the preset second abnormal condition; Furthermore, when the wireless charging program in memory 130 is executed by the processor, it also performs the following steps: If the temperature data meets the preset first abnormal condition, the power management chip reduces the charging power of the wireless charging receiver chip to the battery, so as to lower the temperature of the battery. If the temperature data meets the preset second abnormal condition, the power management chip will stop the wireless charging receiver chip from charging the battery, so as to reduce the temperature of the battery.

[0026] Furthermore, when the wireless charging program in memory 130 is executed by the processor, it also performs the following steps: If the voltage data is between a preset third threshold and a preset fourth threshold, then the voltage data is determined to meet a preset third abnormal condition, wherein the preset fourth threshold is greater than the preset third threshold; If the voltage data exceeds the preset fourth threshold, then the voltage data is determined to meet the preset fourth abnormal condition; Furthermore, when the wireless charging program in memory 130 is executed by the processor, it also performs the following steps: If the voltage data meets the preset third abnormal condition, the power management chip will reduce the voltage at which the wireless charging receiver chip charges the battery. If the voltage data meets the preset fourth abnormal condition, the power management chip will stop the wireless charging receiver chip from charging the battery.

[0027] Furthermore, when the wireless charging program in memory 130 is executed by the processor, it also performs the following steps: If the current data is between a preset fifth threshold and a preset sixth threshold, then the current data is determined to meet a preset fifth abnormal condition, wherein the preset sixth threshold is greater than the preset fifth threshold; If the current data exceeds the preset sixth threshold, then the current data is determined to meet the preset sixth abnormal condition; Furthermore, when the wireless charging program in memory 130 is executed by the processor, it also performs the following steps: If the current data meets the preset fifth abnormal condition, the power management chip will reduce the current supplied by the wireless charging receiver chip to the battery. If the current data meets the preset sixth abnormal condition, the power management chip will stop the wireless charging receiver chip from charging the battery.

[0028] Furthermore, when the wireless charging program in memory 130 is executed by the processor, it also performs the following steps: The power management chip adjusts the resistance value of the external resistor based on the current data to reduce the charging current of the wireless charging receiver chip to the battery.

[0029] Furthermore, when the wireless charging program in memory 130 is executed by the processor, it also performs the following steps: Generate charging status information based on the status data; The charging status information is sent to the vehicle so that the vehicle can receive and push the charging status information.

[0030] Furthermore, when the wireless charging program in memory 130 is executed by the processor, it also performs the following steps: If the status data meets the preset abnormal conditions, then the corresponding abnormal type is determined; Generate alarm notification information based on the anomaly type; The alarm notification information is sent to the vehicle so that the vehicle can receive and push the alarm notification information.

[0031] Furthermore, when the wireless charging program in memory 130 is executed by the processor, it also performs the following steps: When the wireless charging receiver chip detects an external wireless charging coil based on impedance matching, it sends a charging enable command to the power management chip. The power management chip receives the charging enable command and controls the wireless charging receiver chip to charge the battery according to the charging enable command.

[0032] In this embodiment, a power management chip is introduced into the tire pressure sensor to monitor the battery status. When the battery status data meets the preset abnormal conditions, the power management chip executes the corresponding preset charging protection task to prevent further damage to the tire pressure sensor during the wireless charging process and ensure the safety of the tire pressure sensor during the wireless charging process.

[0033] Reference Figure 2The first embodiment of the wireless charging method of this application provides a flowchart. The wireless charging method is applied to a tire pressure sensor, which includes a wireless charging receiver chip, a power management chip, and a battery. The wireless charging method includes: Step S10: During the charging process of the battery by the wireless charging receiver chip, the power management chip continuously acquires the battery's status data.

[0034] Specifically, existing tire pressure sensors are at risk of being damaged by wireless charging. To improve the safety of tire pressure sensors during wireless charging, this embodiment proposes a tire pressure sensor that integrates a wireless charging receiver chip, a power management chip, and a battery, as summarized below: Wireless charging receiver chip: This is a key component in the tire pressure sensor, used to receive wireless charging signals. The wireless charging receiver chip receives radio electromagnetic signals emitted by an external wireless charging coil and converts them into electrical energy to charge the battery inside the tire pressure sensor. This allows the tire pressure sensor to perform wireless charging without physically connecting to or removing the tire.

[0035] Power Management Chip: The power management chip is a component used to monitor and manage the battery and the wireless charging process. It is responsible for processing information such as the battery's state of charge, battery level, and temperature. During wireless charging, the power management chip continuously acquires battery status data and may take corresponding measures, such as over-temperature protection and over-charge protection, to ensure that the battery operates safely.

[0036] Battery: The tire pressure sensor contains an internal battery, which provides the power needed for the sensor to operate. By storing energy in the battery during wireless charging, the tire pressure sensor can operate for extended periods without battery replacement.

[0037] In a tire pressure sensor, the wireless charging receiver chip receives wireless charging signals and converts them into electrical energy to charge the battery within the sensor. Simultaneously, the power management chip monitors the battery's status, continuously acquiring battery status data. This status data can include one or more of the following: battery temperature, battery charge level, charging voltage, and charging current. In other words, the status data characterizes the real-time status of the tire pressure sensor, including information such as temperature, charge level, charging voltage, and current, providing a data foundation for safe charging of the tire pressure sensor.

[0038] Step S20: If the status data meets the preset abnormal conditions, the corresponding preset charging protection task is executed through the power management chip.

[0039] Specifically, preset charging protection tasks refer to a series of protective measures pre-set during the tire pressure sensor charging process. These preset charging protection tasks are based on preset abnormality types, such as battery overheating, excessive voltage, excessive current, and abnormal power levels.

[0040] During the wireless charging receiver chip's charging of the battery, the power management chip continuously determines whether preset abnormal conditions are met based on the acquired status data. For example, it might perform threshold comparisons based on the status data to determine if preset abnormal conditions are met; or it might perform logical matching based on the status data to determine if preset abnormal conditions are met; or it might perform model analysis based on the status data to determine if preset abnormal conditions are met. It is understandable that, since the status data can include one or more of the following: battery temperature data, battery charge data, charging voltage data, and charging current data, the corresponding abnormality type for the preset abnormal conditions can also be one or more of the following: temperature abnormality, charge abnormality, voltage abnormality, and current abnormality.

[0041] If the status data meets the preset abnormal conditions, the power management chip will be triggered to execute the corresponding preset charging protection tasks, such as stopping charging, issuing an alarm, or reducing charging power (voltage or current), to protect the battery and tire pressure sensor from potential damage.

[0042] In this embodiment, a power management chip is introduced into the tire pressure sensor to monitor the battery status. When the battery status data meets the preset abnormal conditions, the power management chip executes the corresponding preset charging protection task to prevent further damage to the tire pressure sensor during the wireless charging process and ensure the safety of the tire pressure sensor during the wireless charging process.

[0043] Furthermore, referring to Figure 3a , Figure 3b The second embodiment of the wireless charging method of this application provides a flowchart, based on the above. Figure 2 In the illustrated embodiment, the status data includes temperature data. Step S10, after the power management chip continuously acquires the battery's status data during the wireless charging receiver chip's charging process, and step S20, before the power management chip executes the corresponding preset charging protection task if the status data meets preset abnormal conditions, further includes: Step S011: If the temperature data is between a preset first threshold and a preset second threshold, then the temperature data is determined to meet a preset first abnormal condition, wherein the preset second threshold is greater than the preset first threshold, and the preset second threshold is the highest design temperature of the tire pressure sensor. Step S012: If the temperature data exceeds the preset second threshold, then the temperature data is determined to meet the preset second abnormal condition.

[0044] Specifically, abnormal battery temperature can lead to decreased performance or even damage to the tire pressure sensor. By pre-setting temperature thresholds, the power management chip can take timely protective measures when the temperature exceeds the safe range, preventing damage to the tire pressure sensor. Furthermore, this embodiment has two pre-set temperature thresholds: a first preset threshold and a second preset threshold. The second preset threshold is greater than the first preset threshold, and it represents the maximum design temperature of the tire pressure sensor, determined by the sensor's product parameters. If the temperature exceeds the maximum design temperature, the tire pressure sensor will be damaged.

[0045] More specifically, if the temperature data falls between a preset first threshold and a preset second threshold, then the temperature data is determined to meet a preset first anomaly condition. For example, if the temperature data is 130°C, which exceeds the preset first threshold (125°C) but does not exceed the preset second threshold (150°C), then the temperature data is determined to meet the preset first anomaly condition.

[0046] If the temperature data exceeds the preset second threshold, then the temperature data is determined to meet the preset second abnormal condition. For example, if the temperature data is 155°C, which exceeds the preset second threshold (150°C), then the temperature data is determined to meet the preset second abnormal condition.

[0047] The step S20, "If the status data meets the preset abnormal conditions, then the corresponding preset charging protection task is executed through the power management chip," is further refined to include: Step S211: If the temperature data meets the preset first abnormal condition, the power management chip reduces the charging power of the wireless charging receiver chip to the battery, so as to lower the temperature of the battery. Step S212: If the temperature data meets the preset second abnormal condition, the power management chip stops the wireless charging receiver chip from charging the battery, so as to reduce the temperature of the battery.

[0048] Specifically, if the temperature data is determined to meet a preset first abnormal condition, the power management chip can reduce the charging power of the wireless charging receiver chip to the battery, slowing down the charging rate and thus lowering the battery temperature. Reducing the charging power of the wireless charging receiver chip typically means lowering / decreasing the charging voltage / current to the battery, thereby reducing the intensity of the electromagnetic field and thus reducing the transmitted power density. This is a relatively mild protective measure designed to prevent the battery temperature from rising further.

[0049] If the temperature data is determined to meet a preset second abnormal condition, the power management chip can stop the wireless charging receiver chip from charging the battery. This is a more urgent protective measure designed to immediately stop battery charging to prevent the temperature from rising further to a level that could damage the battery or tire pressure sensor.

[0050] The combination of reducing charging power and stopping charging provides a tiered temperature anomaly handling strategy, taking different protective measures according to different temperature levels to ensure that the power management chip responds to temperature anomalies in a targeted manner, thus protecting the tire pressure sensor and battery.

[0051] In this embodiment, by monitoring temperature data, abnormal situations are identified and corresponding measures are taken, such as reducing charging power or stopping charging. This ensures that the tire pressure sensor operates within a safe range and effectively prevents the risk of overheating.

[0052] Furthermore, referring to Figure 4a , Figure 4b The third embodiment of the wireless charging method in this application provides a flowchart, based on the above. Figure 2 In the illustrated embodiment, the status data includes voltage data. Step S10, after the power management chip continuously acquires the battery's status data during the wireless charging receiver chip's charging process, and step S20, before the power management chip executes the corresponding preset charging protection task if the status data meets preset abnormal conditions, further includes: Step S021: If the voltage data is between a preset third threshold and a preset fourth threshold, then the voltage data is determined to meet a preset third abnormal condition, wherein the preset fourth threshold is greater than the preset third threshold. Step S022: If the voltage data exceeds the preset fourth threshold, then the voltage data is determined to meet the preset fourth abnormal condition.

[0053] Specifically, excessive voltage can lead to overcharging of the tire pressure sensor's battery, triggering an overcharge electrolytic reaction, increasing battery temperature, reducing battery life, and even causing safety risks (such as battery swelling, leakage, and fire). Therefore, it is necessary to control the voltage to prevent battery overcharging and ensure the safe and reliable wireless charging process of the tire pressure sensor.

[0054] By pre-setting voltage thresholds, the power management chip can take timely protective measures when the voltage exceeds the safe range, preventing damage to the tire pressure sensor. Furthermore, this embodiment has two pre-set voltage thresholds: a third preset threshold and a fourth preset threshold. The fourth preset threshold is greater than the third preset threshold and can be the maximum design voltage of the tire pressure sensor, which is determined based on the product parameters of the tire pressure sensor. If the voltage exceeds the maximum design voltage, the tire pressure sensor will be damaged. Of course, the fourth preset threshold can also be set to a value lower than the maximum design voltage according to actual needs.

[0055] More specifically, if the voltage data falls between a preset third threshold and a preset fourth threshold, then the voltage data is determined to meet the preset third abnormal condition. For example, if the voltage data is 6.8V, exceeding the preset third threshold (6.6V) but not exceeding the preset fourth threshold (7.1V), then the voltage data is determined to meet the preset third abnormal condition.

[0056] If the voltage data exceeds the preset fourth threshold, then the voltage data is determined to meet the preset fourth abnormal condition. For example, if the voltage data is 7.3V, which exceeds the preset fourth threshold (7.1V), then the voltage data is determined to meet the preset fourth abnormal condition.

[0057] The step S20, "If the status data meets the preset abnormal conditions, then the corresponding preset charging protection task is executed through the power management chip," is further refined to include: Step S221: If the voltage data meets the preset third abnormal condition, the power management chip reduces the voltage of the wireless charging receiver chip charging the battery. Step S222: If the voltage data meets the preset fourth abnormal condition, the power management chip stops the wireless charging receiver chip from charging the battery.

[0058] Specifically, if the voltage data is determined to meet a preset third abnormal condition, the power management chip can reduce the voltage supplied to the battery by the wireless charging receiver chip. This is a relatively mild protective measure designed to prevent the battery voltage from rising further.

[0059] If the voltage data is determined to meet the preset fourth abnormal condition, the power management chip can stop the wireless charging receiver chip from charging the battery. This is a more urgent protective measure designed to immediately stop battery charging to prevent the voltage from rising further to a level that could damage the battery or tire pressure sensor.

[0060] The combination of voltage reduction and charging cessation provides a tiered voltage anomaly handling strategy, employing different protection measures based on different voltage levels to ensure that the power management chip responds specifically to voltage anomalies, thus safeguarding the tire pressure sensor and battery.

[0061] In this embodiment, by monitoring voltage data, abnormal situations are identified and corresponding measures are taken, such as reducing the charging voltage or stopping charging. This ensures that the tire pressure sensor operates within a safe range and effectively prevents the risk of overpressure.

[0062] Furthermore, referring to Figure 5a , Figure 5b The fourth embodiment of the wireless charging method in this application provides a flowchart, based on the above. Figure 2 In the illustrated embodiment, the status data includes current data. Step S10, after the power management chip continuously acquires the battery's status data during the wireless charging receiver chip's charging process, and step S20, before the power management chip executes the corresponding preset charging protection task if the status data meets preset abnormal conditions, further includes: Step S031: If the current data is between a preset fifth threshold and a preset sixth threshold, then the current data is determined to meet a preset fifth abnormal condition, wherein the preset sixth threshold is greater than the preset fifth threshold; Step S032: If the current data exceeds the preset sixth threshold, then the current data is determined to meet the preset sixth abnormal condition.

[0063] Specifically, excessive current may overcharge the tire pressure sensor's battery, triggering an overcharge electrolytic reaction, increasing battery temperature, reducing battery life, and even causing safety risks (such as battery swelling, leakage, and fire). Therefore, it is necessary to control the current to prevent battery overcharging and ensure the safe and reliable wireless charging process of the tire pressure sensor.

[0064] By pre-setting current thresholds, the power management chip can take timely protective measures when the current exceeds the safe range, preventing damage to the tire pressure sensor. Furthermore, this embodiment has two pre-set current thresholds: a fifth preset threshold and a sixth preset threshold. The sixth preset threshold is greater than the fifth preset threshold and can be the maximum design current of the tire pressure sensor, which is determined by the product parameters of the tire pressure sensor. If the current exceeds the maximum design current, the tire pressure sensor will be damaged. Of course, the sixth preset threshold can also be set to a value lower than the maximum design current according to actual needs.

[0065] More specifically, if the current data falls between a preset fifth threshold and a preset sixth threshold, then the current data is determined to meet the preset fifth abnormal condition. For example, if the current data is 1.4A, which exceeds the preset fifth threshold (1.3A) but does not exceed the preset sixth threshold (1.5A), then the current data is determined to meet the preset fifth abnormal condition.

[0066] If the current data exceeds the preset sixth threshold, then the current data is determined to meet the preset sixth abnormal condition. For example, if the current data is 1.6A, which exceeds the preset fourth threshold (1.5A), then the current data is determined to meet the preset sixth abnormal condition.

[0067] The step S20, "If the status data meets the preset abnormal conditions, then the corresponding preset charging protection task is executed through the power management chip," is further refined to include: Step S231: If the current data meets the preset fifth abnormal condition, then the power management chip reduces the current of the wireless charging receiver chip charging the battery. Step S232: If the current data meets the preset sixth abnormal condition, the power management chip stops the wireless charging receiver chip from charging the battery.

[0068] Specifically, if the current data is determined to meet the preset fifth abnormal condition, the power management chip can reduce the charging current from the wireless charging receiver chip to the battery. This is a relatively mild protection measure designed to prevent the battery current from increasing further.

[0069] If the current data is determined to meet the preset sixth abnormal condition, the power management chip can stop the wireless charging receiver chip from charging the battery. This is a more urgent protective measure designed to immediately stop battery charging to prevent the current from increasing further to a level that could damage the battery or tire pressure sensor.

[0070] The combination of reducing current and stopping charging provides a tiered current anomaly handling strategy, taking different protective measures according to different current levels to ensure that the power management chip responds to current anomalies in a targeted manner, thus protecting the tire pressure sensor and battery.

[0071] In this embodiment, by monitoring current data, abnormal situations are identified and corresponding measures are taken, such as reducing the charging current or stopping charging. This ensures that the tire pressure sensor operates within a safe range and effectively prevents the risk of overcurrent in the tire pressure sensor.

[0072] Furthermore, referring to Figure 6The fifth embodiment of the wireless charging method in this application provides a flowchart. Based on the embodiment shown in Figure 5 above, the power management chip is connected to an external resistor, and the step S231 of "reducing the charging current of the wireless charging receiver chip to the battery through the power management chip" is further refined, including: Step S2311: The power management chip adjusts the resistance value of the external resistor according to the current data to reduce the charging current of the wireless charging receiver chip to the battery.

[0073] Specifically, the power management chip provides pins or interfaces to connect to an external resistor, allowing adjustment of the resistor's value. The power management chip determines a target resistance value based on current data, then increases the external resistor's value to approach or equal the target value. This effectively changes the total resistance of the battery charging circuit; the increased resistance leads to a decrease in current. In this way, the current drawn by the wireless charging receiver chip to charge the battery is reduced.

[0074] In this embodiment, by adjusting the external resistor through the power management chip, the current drawn by the wireless charging receiver chip to charge the battery can be effectively reduced, thereby improving the stability and safety of the charging process.

[0075] Furthermore, referring to Figure 7 The sixth embodiment of the wireless charging method of this application provides a flowchart, based on the above. Figure 2 In the embodiment shown, the tire pressure sensor is communicatively connected to the vehicle, and the wireless charging method further includes: Step S041: Generate charging status information based on the status data; Step S042: Send the charging status information to the vehicle so that the vehicle can receive and push the charging status information.

[0076] Specifically, the status data may include one or more of the following: battery temperature data, battery charge data, charging voltage data, and charging current data. The tire pressure sensor can generate charging status information based on one or more of the above status data. In other words, the charging status information represents at least one of the following: battery temperature, battery charge, charging voltage, and charging current.

[0077] Furthermore, based on the communication connection between the tire pressure sensor and the vehicle, the tire pressure sensor sends charging status information to the vehicle, and the vehicle receives the charging status information accordingly. It is understood that the charging status information may include descriptions of battery temperature, and / or battery charge level, and / or charging voltage, and / or charging current.

[0078] When a vehicle receives charging status information, it will push the charging status information to the user so that the user can understand its content. The specific push methods can be: (1) Instrument panel display: The charging status information can be displayed to the driver through the vehicle's instrument panel. (2) In-vehicle infotainment system: The charging status information can be displayed on the vehicle's infotainment system, providing more details and visualization effects, so that the user can easily obtain the information. (3) Mobile application notification: The vehicle can connect to a mobile application and send a notification to the mobile application so that the user can view the charging status information on the mobile phone. (4) Diagnostic device notification: The vehicle can connect to a diagnostic device and send a notification to the diagnostic device so that the user can view the charging status information on the diagnostic device. (5) Sound or visual push: Under certain circumstances, the vehicle can remind the user of changes in the charging status through sound or visual means. (6) Remote monitoring system: Some vehicles may have a remote monitoring system, and the user can access the vehicle information through the Internet. In this way, the user can monitor the charging status information from a remote location.

[0079] The aforementioned push notification method enables the vehicle's driver or system to monitor the charging status of the tire pressure sensor in real time, so as to take necessary measures or monitor the battery status.

[0080] In this embodiment, based on the communication connection between the tire pressure sensor and the vehicle, the vehicle can obtain the charging status information of the tire pressure sensor. Relevant users can understand the charging status of the tire pressure sensor at any time and take necessary measures when abnormal charging is detected, thereby improving the safety and reliability of the wireless charging process of the tire pressure sensor.

[0081] Furthermore, referring to Figure 8 The seventh embodiment of the wireless charging method of this application provides a flowchart, based on the above. Figure 7 In the embodiment shown, the wireless charging method further includes: Step S051: If the status data meets the preset abnormal conditions, then determine the corresponding abnormal type. Step S052: Generate alarm notification information based on the anomaly type; Step S053: Send the alarm notification information to the vehicle so that the vehicle can receive and push the alarm notification information.

[0082] Specifically, if the status data does not meet the preset abnormal conditions, the charging status information can be sent to the vehicle in the manner described in the sixth embodiment of the wireless charging method of this application, so that the vehicle can receive and push the charging status information. However, if the status data meets the preset abnormal conditions, an alarm should be issued to the user in a timely manner so that the user can take appropriate measures to avoid damage to the tire pressure sensor or other hardware.

[0083] More specifically, since the status data can include one or more of the following: battery temperature data, battery charge data, charging voltage data, and charging current data, the corresponding anomaly type for the preset abnormal condition can also be one or more of the following: temperature anomaly, charge anomaly, voltage anomaly, and current anomaly. Therefore, if the status data meets the preset abnormal condition, the anomaly type corresponding to the preset abnormal condition can be determined.

[0084] Furthermore, the tire pressure sensor can generate corresponding alarm messages based on the type of anomaly. For example, when the anomaly type is temperature anomaly, it can generate a corresponding temperature anomaly alarm message; similarly, when the anomaly type is voltage and current anomaly, it can generate corresponding voltage and current anomaly alarm messages.

[0085] Then, based on the communication connection between the tire pressure sensor and the vehicle, the tire pressure sensor sends an alarm message to the vehicle, and the vehicle receives the alarm message accordingly.

[0086] When a vehicle receives charging status information, it will push charging status information to the user so that the user can understand its content. The specific push methods may be: (1) dashboard display; (2) in-vehicle infotainment system; (3) mobile application notification; (4) diagnostic equipment notification; (5) sound or visual push; (6) remote monitoring system.

[0087] The aforementioned push notification method enables the vehicle's driver or system to understand the type of abnormality of the tire pressure sensor in real time, so as to take necessary measures or monitor the battery status.

[0088] In this embodiment, based on the communication connection between the tire pressure sensor and the vehicle, the vehicle can obtain alarm information from the tire pressure sensor. Relevant users can receive alarms when they detect charging abnormalities and take necessary measures to improve the safety and reliability of the wireless charging process of the tire pressure sensor.

[0089] Furthermore, referring to Figure 9 The eighth embodiment of the wireless charging method in this application provides a flowchart, based on the above. Figure 2 In the embodiment shown, the wireless charging method further includes: Step S061: When the wireless charging receiver chip detects an external wireless charging coil based on impedance matching, it sends a charging enable command to the power management chip through the wireless charging receiver chip. Step S062: Receive the charging enable command through the power management chip, and control the wireless charging receiver chip to charge the battery according to the charging enable command.

[0090] Specifically, the principle behind how a wireless charging receiver chip detects an external charging coil through impedance matching is based on the physical characteristics of radio wave transmission. When an external wireless charging coil emits radio waves, these waves propagate through space and induce a current in the wireless charging receiver chip. This induced current causes a change in the chip's circuitry. Impedance matching refers to adjusting the resistance of the wireless charging receiver chip to maximize the induced current.

[0091] The current sensing effect is strongest when the resistance of the wireless charging receiver chip matches the resistance of the external wireless charging coil, because current can be effectively transferred from the external wireless charging coil to the wireless charging receiver chip during matching. By detecting the intensity of the induced current, the wireless charging receiver chip can determine the quality of the impedance matching, thereby detecting the presence of the external wireless charging coil.

[0092] When the wireless charging receiver chip detects an external wireless charging coil based on impedance matching, it sends a charging enable command to the power management chip. This charging enable command is an instruction or signal used to instruct the power management chip to perform a charging operation. Accordingly, the power management chip receives the charging enable command and controls the wireless charging receiver chip to charge the battery based on it.

[0093] In this embodiment, after detecting the external wireless charging coil through impedance matching, wireless charging is enabled in conjunction with the wireless charging receiver chip and the power management chip, thus achieving effective control of wireless charging.

[0094] Furthermore, a ninth embodiment is proposed in conjunction with the first to eighth embodiments of the wireless charging method of this application.

[0095] Specifically, such as Figure 10 As shown, Figure 10 This diagram illustrates some functional modules of the wireless charging transmitter and receiver involved in the wireless charging method of this application. The transmitter can be a portable (or vehicle-mounted) wireless charging transmitter, which the user can place near the tire pressure sensors when needed, allowing the sensors to receive radio electromagnetic signals. Alternatively, the transmitter can be a wireless charging transmitter installed on the parking space floor in a relatively fixed position. Wireless charging can proceed normally when the vehicle is parked in the parking space and the tire pressure sensors are near the device. Notably, the number of wireless charging transmitters installed on the parking space floor can be four, each corresponding to one of the vehicle's four tire pressure sensors. Figure 10As shown, the transmitting end also integrates a corresponding AD / DC conversion unit, drive unit, main control unit, voltage / current detection unit, and wireless charging coil (an external wireless charging coil relative to the receiving end). These units and functional modules work together to provide the electrical energy required for charging the tire pressure sensor. The receiving end refers to the tire pressure sensor installed inside the vehicle's tires, which integrates a corresponding wireless charging coil, wireless charging receiver chip, power management chip, battery, and other system loads. The wireless charging receiver chip may include a corresponding rectifier unit, voltage / current conditioning unit, and main control unit, providing feedback to the transmitting end during the wireless charging process. The power management chip may include a corresponding voltage / current detection unit, temperature detection unit, and power detection unit, enabling the regulation of parameters such as voltage, current, temperature, and power.

[0096] like Figure 11 As shown, Figure 11 This is a schematic diagram of the wireless charging receiver chip U11 and its external circuitry involved in the wireless charging method of this application. Pins 3 (Boot1), 4 (OUT), 17 (Boot2), 6 (COM1), and 15 (COM2) of the wireless charging receiver chip U10 comprehensively control the wireless charging process. Furthermore, the wireless charging receiver chip U10 is connected to the rectifier circuit via interfaces J2 and J3. It is worth noting that, based on... Figure 11 The wireless charging receiver chip U10, the connection method of the external circuit, and the component calibration parameters shown are illustrated. The wireless charging receiver chip U10 can realize multi-coil, high-current wireless charging, and can provide up to 5W power and a maximum charging current of 1.5A to achieve fast charging.

[0097] like Figure 12 As shown, Figure 12 This diagram illustrates the power management chip U12 and its external circuitry involved in the wireless charging method of this application. The power management chip U12 is connected to several external resistors, and its voltage, current, and temperature are controlled via programming. Taking the temperature-controlled matching resistor R28 connected to pin 4 (PRETERM) of the power management chip U12 as an example, its preferred resistance is 2K ohms. Combined with the power management chip U12, the temperature-controlled matching resistor R28, and the programming method, temperature control during the wireless charging process can be achieved. Figure 12The diagram shows the power management chip U12, the connection method of the external circuit, and the component calibration parameters. The power management chip U12 can achieve charging voltage regulation with an accuracy of 1%, charging current regulation with an accuracy of 10%, input overvoltage protection with a voltage threshold of 6.6V or 7.1V, thermal regulation protection with a temperature threshold of 125°C, and thermal shutdown protection with a temperature threshold of 150°C. Additionally, pin 10 (OUT) of the power management chip U12 and its corresponding external circuitry provide short-circuit protection, and pin 7 (ISET) and its corresponding external circuitry provide short-circuit detection. Furthermore, the power management chip U12 can be programmed with termination and pre-charge thresholds to determine when to stop charging.

[0098] In this embodiment, a power management chip is introduced into the tire pressure sensor to monitor the battery status. The power management chip can identify abnormalities during the wireless charging process and make corresponding decisions to avoid further damage to the tire pressure sensor during the wireless charging process and ensure the safety of the tire pressure sensor during the wireless charging process.

[0099] Furthermore, this application also proposes a tire pressure sensor, which includes a memory, a processor, and a wireless charging program stored in the memory and executable on the processor. When the wireless charging program is executed by the processor, it implements the steps of the wireless charging method described above.

[0100] Since this wireless charging program employs all the technical solutions of all the aforementioned embodiments when executed by the processor, it possesses at least all the beneficial effects brought about by all the technical solutions of all the aforementioned embodiments, which will not be elaborated upon here.

[0101] Furthermore, embodiments of this application also propose a computer-readable storage medium storing a wireless charging program, which, when executed by a processor, implements the steps of the wireless charging method described above.

[0102] Since this wireless charging program employs all the technical solutions of all the aforementioned embodiments when executed by the processor, it possesses at least all the beneficial effects brought about by all the technical solutions of all the aforementioned embodiments, which will not be elaborated upon here.

[0103] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0104] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0105] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a tire pressure sensor to execute the methods of each embodiment of this application.

[0106] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A wireless charging method, characterized in that, The wireless charging method is applied to a tire pressure sensor, which includes a wireless charging receiver chip, a power management chip, and a battery. The wireless charging method includes: During the charging process of the wireless charging receiver chip, the power management chip continuously acquires the status data of the battery. If the status data meets the preset abnormal conditions, the corresponding preset charging protection task is executed through the power management chip; Wherein, the status data includes temperature data, and after the step of continuously acquiring the battery status data through the power management chip during the charging process of the battery by the wireless charging receiver chip, and before the step of executing a corresponding preset charging protection task through the power management chip if the status data meets preset abnormal conditions, the method further includes: If the temperature data is between a preset first threshold and a preset second threshold, then the temperature data is determined to meet a preset first abnormal condition, wherein the preset second threshold is greater than the preset first threshold, and the preset second threshold is the highest design temperature of the tire pressure sensor; If the temperature data exceeds the preset second threshold, then the temperature data is determined to meet the preset second abnormal condition; The step of executing a corresponding preset charging protection task through the power management chip if the status data meets preset abnormal conditions includes: If the temperature data meets the preset first abnormal condition, the power management chip reduces the charging power of the wireless charging receiver chip to the battery, so as to lower the temperature of the battery. If the temperature data meets the preset second abnormal condition, the power management chip stops the wireless charging receiver chip from charging the battery, so as to reduce the temperature of the battery. Wherein, the status data includes voltage data, and after the step of continuously acquiring the battery status data through the power management chip during the charging process of the battery by the wireless charging receiver chip, and before the step of executing the corresponding preset charging protection task through the power management chip if the status data meets preset abnormal conditions, the method further includes: If the voltage data is between a preset third threshold and a preset fourth threshold, then the voltage data is determined to meet a preset third abnormal condition, wherein the preset fourth threshold is greater than the preset third threshold; If the voltage data exceeds the preset fourth threshold, then the voltage data is determined to meet the preset fourth abnormal condition; The step of executing a corresponding preset charging protection task through the power management chip if the status data meets preset abnormal conditions includes: If the voltage data meets the preset third abnormal condition, the power management chip will reduce the voltage at which the wireless charging receiver chip charges the battery. If the voltage data meets the preset fourth abnormal condition, the power management chip will stop the wireless charging receiver chip from charging the battery.

2. The wireless charging method as described in claim 1, characterized in that, The status data includes current data. After the step of continuously acquiring the battery status data through the power management chip during the wireless charging receiver chip's charging process, and before the step of executing a corresponding preset charging protection task through the power management chip if the status data meets preset abnormal conditions, the method further includes: If the current data is between a preset fifth threshold and a preset sixth threshold, then the current data is determined to meet a preset fifth abnormal condition, wherein the preset sixth threshold is greater than the preset fifth threshold; If the current data exceeds the preset sixth threshold, then the current data is determined to meet the preset sixth abnormal condition; The step of executing a corresponding preset charging protection task through the power management chip if the status data meets preset abnormal conditions includes: If the current data meets the preset fifth abnormal condition, the power management chip will reduce the current supplied by the wireless charging receiver chip to the battery. If the current data meets the preset sixth abnormal condition, the power management chip will stop the wireless charging receiver chip from charging the battery.

3. The wireless charging method as described in claim 2, characterized in that, The power management chip is connected to an external resistor, and the step of reducing the charging current of the wireless charging receiver chip to the battery through the power management chip includes: The power management chip adjusts the resistance value of the external resistor based on the current data to reduce the charging current of the wireless charging receiver chip to the battery.

4. The wireless charging method as described in claim 1, characterized in that, The tire pressure sensor is communicatively connected to the vehicle, and the wireless charging method further includes: Generate charging status information based on the status data; The charging status information is sent to the vehicle so that the vehicle can receive and push the charging status information.

5. The wireless charging method as described in claim 4, characterized in that, The wireless charging method further includes: If the status data meets the preset abnormal conditions, then the corresponding abnormal type is determined; Generate alarm notification information based on the anomaly type; The alarm notification information is sent to the vehicle so that the vehicle can receive and push the alarm notification information.

6. The wireless charging method as described in claim 1, characterized in that, The wireless charging method further includes: When the wireless charging receiver chip detects an external wireless charging coil based on impedance matching, it sends a charging enable command to the power management chip. The power management chip receives the charging enable command and controls the wireless charging receiver chip to charge the battery according to the charging enable command.

7. A tire pressure sensor, characterized in that, The tire pressure sensor includes a memory, a processor, and a wireless charging program stored in the memory and executable on the processor. When executed by the processor, the wireless charging program implements the steps of the wireless charging method as described in any one of claims 1-6.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a wireless charging program, which, when executed by a processor, implements the steps of the wireless charging method as described in any one of claims 1-6.

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