Wireless charging control method, device, equipment, medium and program product
By adjusting the voltage limit of the wireless charging transmitter to adapt to changes in charging power, the safety hazard caused by excessive operating voltage of the wireless charging receiver is resolved, thus improving the user experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- BEIJING XIAOMI MOBILE SOFTWARE CO LTD
- Filing Date
- 2024-11-22
- Publication Date
- 2026-05-26
AI Technical Summary
During wireless charging, the fixed voltage limit of the wireless charging transmitter leads to excessive operating voltage at the wireless charging receiver, posing a safety hazard and resulting in a poor user experience.
By responding to charging power-related information from the wireless charging receiver, the voltage limit is adjusted from a first voltage limit to a second voltage limit to adapt to changes in charging power and prevent the operating voltage from overshooting.
It effectively reduces the operating voltage of the wireless charging receiver, avoids safety hazards, and improves the user experience.
Smart Images
Figure CN122092452A_ABST
Abstract
Description
Technical Field
[0001] This disclosure relates to the field of wireless charging, specifically to a wireless charging control method, apparatus, device, medium, and program product. Background Technology
[0002] In recent years, with the rapid development of charging technology, wireless charging, which enables power transfer without cables, has been widely used in people's daily lives, improving the convenience and flexibility of charging. During wireless charging, the wireless charging transmitter (TX) charges the wireless charging receiver (RX) by generating a magnetic field or radio waves.
[0003] However, by using related technologies to control the wireless charging process, the voltage limit value of the wireless charging transmitter is always kept at a large fixed value, which can easily cause the operating voltage of the wireless charging receiver to be too high, thus leading to safety hazards and a poor user experience. Summary of the Invention
[0004] To overcome the problems existing in related technologies, this disclosure provides a wireless charging control method, apparatus, device, medium, and program product.
[0005] According to a first aspect of the present disclosure, a wireless charging control method is provided, the wireless charging control method comprising:
[0006] In response to connection with a wireless charging receiver, the wireless charging receiver is charged with a first voltage limit value;
[0007] In response to the charging power related information of the wireless charging receiver meeting a preset voltage reduction condition, the wireless charging receiver is charged with a second voltage limit value. The charging power related information can characterize the charging power of the wireless charging receiver, and the second voltage limit value is less than the first voltage limit value.
[0008] In some embodiments of this disclosure, the charging power related information includes received power information, which includes received power values at multiple different times.
[0009] In some embodiments of this disclosure, the preset voltage reduction condition includes: a preset number of received power values being lower than a preset power value; or,
[0010] The average of the received power values at multiple different times is lower than the preset power value.
[0011] In some embodiments of this disclosure, the charging power-related information includes offset information of the wireless charging receiver relative to the wireless charging transmitter, the offset information including the offset size of the wireless charging receiver relative to the wireless charging transmitter, and the preset voltage reduction condition including: the offset size is greater than a preset size; or...
[0012] The charging power related information includes the temperature value of the wireless charging receiver, and the preset voltage reduction condition includes: the temperature value is higher than a preset temperature threshold.
[0013] In some embodiments of this disclosure, charging the wireless charging receiver with a second voltage limit value includes: determining the second voltage limit value based on the charging power related information, and charging the wireless charging receiver with the second voltage limit value.
[0014] In some embodiments of this disclosure, when the charging power-related information includes received power information, determining the second voltage limit value based on the charging power information includes:
[0015] Based on the received power information, the second voltage limit value is determined.
[0016] In some embodiments of this disclosure, when the received power information includes received power values at multiple different times within a preset time period, determining the second voltage limit value based on the received power information includes:
[0017] In response to the fact that all the received power values are within the same preset power range, the preset voltage limit value corresponding to the preset power range is determined as the second voltage limit value;
[0018] The preset power range is set in sequence with multiple preset power ranges. In two adjacent preset power ranges, the maximum value of one preset power range is less than the minimum value of the other preset power range. Different preset power ranges correspond to different preset voltage limits. The preset power range with the larger maximum value corresponds to a larger preset voltage limit.
[0019] In some embodiments of this disclosure, the difference between the preset voltage limit values corresponding to adjacent preset power ranges is the same.
[0020] In some embodiments of this disclosure, the step of charging the wireless charging receiver with a first voltage limit value in response to connection to the wireless charging receiver includes:
[0021] In response to connecting to the wireless charging receiver, protocol authentication is performed with the wireless charging receiver;
[0022] In response to the successful authentication of the protocol, a first voltage limit value corresponding to the wireless charging receiver is determined and the wireless charging receiver is charged using the first voltage limit value.
[0023] In some embodiments of this disclosure, the wireless charging control method further includes:
[0024] In response to the successful authentication of the protocol, based on the first voltage limit value, a preset voltage limit value corresponding to a plurality of preset power ranges is determined.
[0025] In some embodiments of this disclosure, the wireless charging control method further includes:
[0026] In response to reconnection after disconnection from the wireless charging receiver, the first voltage limit value is re-determined.
[0027] According to a second aspect of the present disclosure, a wireless charging control device is provided, the wireless charging control device comprising:
[0028] A charging module, the charging module being configured to charge the wireless charging receiver at a first voltage limit value in response to connection with the wireless charging receiver;
[0029] A step-down module is provided, which is used to charge the wireless charging receiver with a second voltage limit value in response to the charging power related information of the wireless charging receiver meeting a preset step-down condition. The charging power related information can characterize the charging power of the wireless charging receiver, and the second voltage limit value is less than the first voltage limit value.
[0030] According to a third aspect of the present disclosure, an electronic device is provided, the electronic device comprising:
[0031] processor;
[0032] Memory used to store processor-executable instructions;
[0033] The processor is configured to perform the wireless charging control method as described in the first aspect.
[0034] According to a fourth aspect of the present disclosure, a non-transitory computer-readable storage medium is provided, wherein when instructions in the storage medium are executed by a processor of an electronic device, the electronic device is enabled to perform the wireless charging control method as described in the first aspect.
[0035] According to a fifth aspect of the present disclosure, a computer program product is provided, including a computer program that, when executed by a processor, implements the wireless charging control method as described in the first aspect.
[0036] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects: using the charging power of the wireless charging receiver as the basis for whether the preset voltage reduction condition is met, so that the voltage limit value of the wireless charging transmitter can be adapted to the charging power of the wireless charging receiver. By adjusting the first voltage limit value to the second voltage limit value, the operating voltage of the wireless charging receiver is reduced, avoiding the safety hazards caused by the overshoot of the operating voltage of the wireless charging receiver and improving the user experience.
[0037] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description
[0038] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.
[0039] Figure 1 This is a flowchart illustrating a wireless charging control method according to an exemplary embodiment.
[0040] Figure 2 This is a flowchart illustrating, according to an exemplary embodiment, charging the wireless charging receiver with a first voltage limit value in response to connection with the wireless charging receiver.
[0041] Figure 3 This is a flowchart illustrating a wireless charging control method according to another exemplary embodiment.
[0042] Figure 4 This is a block diagram of a wireless charging control device according to an exemplary embodiment.
[0043] Figure 5 This is a block diagram of an electronic device according to an exemplary embodiment.
[0044] In the picture:
[0045] 10-Charging module; 20-Step-down module; 101-Processing component; 102-Memory; 103-Power component; 104-Multimedia component; 105-Audio component; 106-Input / output interface; 107-Sensor component; 108-Communication component; 109-Processor. Detailed Implementation
[0046] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the invention as detailed in the appended claims.
[0047] In recent years, with the rapid development of charging technology, wireless charging methods such as in-vehicle wireless charging and wireless power banks, which can transfer electrical energy from the power source to the device to be charged without the need for cable connection, have been widely used in people's daily lives, improving the convenience and flexibility of charging.
[0048] In related technologies, during wireless charging, the wireless charging transmitter (TX end) charges the wireless charging receiver (RX end) by generating a magnetic field or radio waves. After the wireless charging transmitter and receiver are connected, the voltage limit of the wireless charging transmitter remains at a fixed value throughout the charging process.
[0049] However, when using related technologies to control the wireless charging process, if the voltage limit value of the wireless charging transmitter remains fixed, when the charging power of the wireless charging receiver decreases due to factors such as offset or temperature rise, it can easily cause the operating voltage of the wireless charging receiver to surge. Furthermore, excessive operating voltage can lead to safety hazards in the chips and other components of the wireless charging receiver, resulting in a poor user experience.
[0050] Based on this, an exemplary embodiment of this disclosure provides a wireless charging control method. When connected to a wireless charging receiver, the method charges the receiver with a first voltage limit value. When the charging power information of the wireless charging receiver meets a preset voltage reduction condition, the method charges the receiver with a second voltage limit value lower than the first voltage limit value. This achieves control over the voltage limit value of the wireless charging transmitter during the wireless charging process. By using the charging power of the wireless charging receiver as the basis for whether the preset voltage reduction condition is met, the voltage limit value of the wireless charging transmitter can be adapted to the charging power of the wireless charging receiver. By adjusting the first voltage limit value to the second voltage limit value, the operating voltage of the wireless charging receiver is reduced, avoiding safety hazards caused by voltage surges and improving the user experience.
[0051] In one exemplary embodiment, a wireless charging control method is provided, applied to a wireless charging transmitter, i.e., a TX end. The wireless charging transmitter may include, for example, a vehicle-mounted wireless charging transmitter, a wireless power bank, a vertical charging stand, or other devices or equipment capable of wirelessly transmitting electrical energy. (See reference) Figure 1 As shown, the wireless charging control method includes:
[0052] S100, in response to connecting to the wireless charging receiver, charges the wireless charging receiver with a first voltage limit value.
[0053] In step S100, the wireless charging receiver may include charging devices such as mobile phones and tablets. When the wireless charging transmitter is connected to the wireless charging receiver, it means that the user has placed the wireless charging receiver in the charging position. The wireless charging transmitter can transmit power to the wireless charging receiver wirelessly. At this time, the wireless charging transmitter charges the wireless charging receiver with a first voltage limit value.
[0054] For example, if the wireless charging receiver and the wireless charging transmitter are charged by electromagnetic induction, the wireless charging transmitter and the wireless charging receiver are connected when the wireless charging receiver comes into contact with the wireless charging transmitter, or when the wireless charging receiver is installed in the wireless charging transmitter so that the charging coil of the wireless charging receiver is aligned with the charging coil of the wireless charging transmitter.
[0055] The first voltage limit is the initial upper limit voltage set by the wireless charging transmitter when connecting. For example, it can be the maximum operating voltage the wireless charging transmitter can achieve. When the wireless charging transmitter and receiver are connected, the transmitter's operating voltage is less than or equal to the first voltage limit. The first voltage limit can be adjusted according to the type of wireless charging receiver and charging requirements. To ensure charging efficiency after connection, the first voltage limit is usually set relatively high. If the wireless charging transmitter always charges the wireless charging receiver at the first voltage limit, it will always maintain a full-load fast charging mode.
[0056] S200: In response to the charging power related information of the wireless charging receiver satisfying the preset voltage reduction condition, the wireless charging receiver is charged with a second voltage limit value. The charging power related information can characterize the charging power of the wireless charging receiver, and the second voltage limit value is less than the first voltage limit value.
[0057] In step S200, the wireless charging transmitter can acquire charging power-related information from the wireless charging receiver. This charging power-related information characterizes the charging power of the wireless charging receiver, which is the actual charging power it can achieve during charging. For example, the charging power-related information may include a received power value that directly characterizes the charging power, and may also include offset dimensions or temperature values that indirectly affect the charging power.
[0058] The preset voltage reduction condition can be set according to the type of charging power information and the voltage limit control requirements. When the charging power information of the wireless charging receiver meets the preset voltage reduction condition, it means that the actual charging power of the wireless charging receiver is low. If the wireless charging transmitter continues to charge the wireless charging receiver at the first voltage limit, it will cause the operating voltage of the wireless charging receiver to surge, posing a safety hazard to the chip and other components of the wireless charging receiver. At this time, the wireless charging transmitter charges the wireless charging receiver at a second voltage limit, which is lower than the first voltage limit, thereby reducing the maximum surge voltage of the wireless charging receiver, i.e., the maximum operating voltage, and preventing the operating voltage of the wireless charging receiver from becoming too high. If the wireless charging transmitter charges the wireless charging receiver at the second voltage limit, the charging mode of reduced power fast charging is maintained.
[0059] In this embodiment, when connected to a wireless charging receiver, the receiver is charged with a first voltage limit. When the charging power information of the receiver meets a preset voltage reduction condition, it is charged with a second voltage limit lower than the first voltage limit. This controls the voltage limit of the wireless charging transmitter during the wireless charging process. Using the charging power of the receiver as the basis for determining whether the preset voltage reduction condition is met ensures that the voltage limit of the transmitter matches the charging power of the receiver. By adjusting the first voltage limit to the second voltage limit, the operating voltage of the receiver is reduced, avoiding safety hazards caused by voltage surges and improving the user experience.
[0060] In some embodiments, the charging power related information includes received power information, which includes received power values at multiple different times.
[0061] Received power information is used to characterize the actual charging power received by the wireless charging receiver. This received power information directly represents the charging power of the wireless charging receiver. When the wireless charging receiver is connected to the wireless charging transmitter, the receiver can report the received power information to the transmitter, allowing the transmitter to obtain this information as part of the charging power data.
[0062] The received power information includes multiple received power packets (RPPs) at different times. These RPPs represent the actual charging power received by the wireless charging receiver and can be used to characterize the charging power of the wireless charging receiver. The time range and the number of received power values, i.e., the sampling frequency, can be set according to the type of wireless charging receiver and voltage limit control requirements.
[0063] In this embodiment, the received power information is used as the charging power related information. The received power information can characterize the charging power of the wireless charging receiver, providing a basis for whether the preset voltage reduction condition is met, ensuring the accuracy of the charging power related information, and thus ensuring the protection effect of adjusting the first voltage limit value to the second voltage limit value on the wireless charging receiver.
[0064] In some embodiments, the preset buck condition includes: a preset number of received power values being lower than a preset power value, or the average of received power values at multiple different times being lower than a preset power value.
[0065] If a preset number of received power values are all lower than a preset power value, or the average of received power values at multiple different times is lower than a preset power value, it indicates that the charging power of the wireless charging receiver is low. In this case, the maximum overshoot voltage (i.e., the maximum operating voltage) of the wireless charging receiver needs to be reduced by adjusting the first voltage limit to the second voltage limit to prevent the operating voltage of the wireless charging receiver from becoming too high. Therefore, a preset voltage reduction condition is set as a preset number of received power values being lower than the preset power value, or the average of received power values at multiple different times being lower than the preset power value. For example, if the received power value of the wireless charging receiver at 10 different times is less than 30W, it is determined that the charging power-related information meets the preset voltage reduction condition, and the wireless charging receiver is charged using the second voltage limit. Alternatively, if the average received power value of the wireless charging receiver at 10 different times is less than 30W, it is determined that the charging power-related information meets the preset voltage reduction condition, and the wireless charging receiver is charged using the second voltage limit.
[0066] In this embodiment, a preset number of received power values lower than a preset power value or the average of received power values at multiple different times lower than a preset power value is used as a preset voltage reduction condition. This provides a basis for determining whether charging power-related information meets the preset voltage reduction condition. It can determine whether the first voltage limit value needs to be reduced from the perspective of received power value, so that the voltage limit value of the wireless charging transmitter can be matched with the charging power of the wireless charging receiver. This avoids the safety hazards caused by the overshoot of the working voltage of the wireless charging receiver and improves the user experience.
[0067] In some embodiments, the charging power related information includes the offset information of the wireless charging receiver relative to the wireless charging transmitter, the offset information includes the offset size of the wireless charging receiver relative to the wireless charging transmitter, and the preset step-down condition includes: the offset size is greater than a preset size.
[0068] The offset information between the wireless charging receiver and the wireless charging transmitter characterizes the deviation between their current relative positions compared to their standard relative positions during normal charging, indirectly representing the charging power of the receiver. Understandably, a larger positional deviation indicates a lower alignment between the charging coils of the receiver and the transmitter, resulting in lower charging power. This offset information, as a component related to charging power, can be obtained through the position detection function of the wireless charging transmitter or other detection devices.
[0069] The offset information includes the offset size of the wireless charging receiver relative to the wireless charging transmitter. The offset size is the size of the deviation between the current relative position of the wireless charging receiver and the wireless charging transmitter and the standard relative position during normal charging. It can be used as a charging power related information to characterize the charging power of the wireless charging receiver.
[0070] If the offset size is greater than the preset size, it means that the charging power of the wireless charging receiver is low. It is necessary to reduce the maximum overshoot voltage of the wireless charging receiver, i.e. the maximum operating voltage, by adjusting the first voltage limit value to avoid the operating voltage of the wireless charging receiver being too high. Therefore, the offset size being greater than the preset size can be used as the preset voltage reduction condition.
[0071] In this embodiment, the offset information of the wireless charging receiver relative to the wireless charging transmitter is used as the charging power related information. The offset information can characterize the charging power of the wireless charging receiver. The offset size being greater than a preset size is used as a preset voltage reduction condition, which provides a basis for whether the charging power related information meets the preset voltage reduction condition. It can determine whether the first voltage limit value needs to be reduced from the dimension of the offset size, so that the voltage limit value of the wireless charging transmitter can be adapted to the charging power of the wireless charging receiver, avoiding the safety hazards caused by the overshoot of the working voltage of the wireless charging receiver and improving the user experience.
[0072] In some embodiments, charging power-related information includes the temperature value of the wireless charging receiver, and the preset voltage reduction condition includes: the temperature value is higher than a preset temperature threshold.
[0073] The temperature of a wireless charging receiver indirectly indicates its charging power. Generally, a higher temperature means a longer charging time and a more complete charge, necessitating a reduction in charging power. When connected to a wireless charging transmitter, the receiver reports its temperature to the transmitter, providing the transmitter with information related to the charging power.
[0074] If the temperature value is higher than the preset temperature threshold, it means that the charging power of the wireless charging receiver is low. It is necessary to reduce the maximum overshoot voltage of the wireless charging receiver, i.e. the maximum operating voltage, by adjusting the first voltage limit value to avoid the operating voltage of the wireless charging receiver being too high. Therefore, the temperature value being higher than the preset temperature threshold can be used as the preset voltage reduction condition.
[0075] In this embodiment, the temperature value of the wireless charging receiver is used as the charging power related information, and the temperature value being higher than a preset temperature threshold is used as a preset voltage reduction condition. This provides a basis for determining whether the charging power related information meets the preset voltage reduction condition. It can determine whether the first voltage limit value needs to be reduced from the perspective of temperature value, so that the voltage limit value of the wireless charging transmitter can be matched with the charging power of the wireless charging receiver, avoiding the safety hazards caused by the overshoot of the working voltage of the wireless charging receiver and improving the user experience.
[0076] It should be noted that, for example, when wireless charging receivers such as mobile phones undergo jungle testing (a charging offset test), they control the offset between the wireless charging receiver and the wireless charging transmitter to reduce the charging power of the receiver and test the voltage increase at the receiver. This may result in excessively high operating voltage at the receiver, posing a safety hazard to the receiver's chips and other components. Therefore, the wireless charging control method of this application can also determine whether a preset voltage reduction condition is met based on the offset information, thus solving problems such as damage to the wireless charging receiver chip caused by jungle testing.
[0077] In some embodiments, charging the wireless charging receiver with a second voltage limit value includes: determining a second voltage limit value based on charging power-related information, and charging the wireless charging receiver with the second voltage limit value.
[0078] When the charging power information meets the preset voltage reduction conditions and the first voltage limit needs to be lowered, a second voltage limit lower than the first voltage limit is determined based on the charging power information. The wireless charging receiver is then charged using this second voltage limit. Subsequent charging of the wireless charging receiver using this second voltage limit reduces its operating voltage. Because the charging power information is used to determine the second voltage limit, it ensures that the second voltage limit is compatible with the charging power of the wireless charging receiver.
[0079] In this embodiment, a second voltage limit is determined based on charging power-related information, and the wireless charging receiver is charged using this second voltage limit. This reduces the first voltage limit, allowing the wireless charging receiver to be charged subsequently using a second voltage limit lower than the first voltage limit. This lowers the operating voltage of the wireless charging receiver and ensures that the second voltage limit is compatible with the charging power of the wireless charging receiver. This guarantees the stability of the charging process after the voltage limit is reduced, avoids safety hazards caused by the overshooting of the wireless charging receiver's operating voltage, and improves the user experience.
[0080] In some embodiments, when the charging power-related information includes received power information, determining a second voltage limit value based on the charging power information includes: determining a second voltage limit value based on the received power information.
[0081] As mentioned earlier, when the charging power-related information includes received power information, the received power information characterizes the charging power of the wireless charging receiver and serves as the basis for determining whether the preset voltage reduction condition is met. In this case, when determining the second voltage limit value based on the charging power information, the second voltage limit value can also be determined based on the received power information, ensuring that the second voltage limit value is compatible with the received power information.
[0082] In this embodiment, when the charging power-related information includes the received power information, a second voltage limit value is determined based on the received power information. This achieves the goal of determining the second voltage limit value based on the charging power-related information, providing a target for adjusting the first voltage limit value. Using the received power information as the basis for determining the second voltage limit value ensures that the second voltage limit value is compatible with the received power information, fully considering the impact of the received power information on the required degree of voltage limit reduction. This guarantees the stability of charging at the second voltage limit value, avoids safety hazards caused by the overshoot of the wireless charging receiver's operating voltage, and improves the user experience.
[0083] In some embodiments, when the received power information includes received power values at multiple different times within a preset time period, determining a second voltage limit value based on the received power information includes: in response to all received power values being within the same preset power range, determining a preset voltage limit value corresponding to the preset power range as the second voltage limit value. Here, multiple preset power ranges are sequentially set, and in two adjacent preset power ranges, the maximum value of one preset power range is less than the minimum value of the other preset power range. Different preset power ranges correspond to different preset voltage limit values, with the preset power range having a larger maximum value corresponding to a larger preset voltage limit value.
[0084] As described above, when the received power information includes received power values at multiple different moments within a preset time period, taking a preset number of received power values being lower than a preset power value or the average value of the received power values at multiple different moments being lower than the preset power value as a preset step-down condition, and charging the wireless charging receiver with a second voltage limit value when the preset step-down condition is satisfied. In this case, when determining the second voltage limit value according to the received power information, when all the received power values are within the same preset power range, the preset voltage limit value corresponding to this preset power range can be determined as the second voltage limit value, providing a basis for the adjustment of the first voltage limit value.
[0085] A plurality of preset power ranges are sequentially set. Among two adjacent preset power ranges, the maximum value of one preset power range is less than the minimum value of the other preset power range, that is, there is no overlapping interval for each preset power range, so that the received power value can only be within one preset power range. Different preset power ranges correspond to different preset voltage limit values. The larger the maximum value, the larger the preset voltage limit value corresponding to the preset power range. When all the received power values are within one preset power range, the preset voltage limit value corresponding to when all the received power values are within another preset power range is different, and the higher the preset power range, the larger the corresponding preset voltage limit value.
[0086] Exemplarily, the preset power value is 30W, and two preset power ranges are set, which are (0 - 12W) and [12W, 30W) respectively. The second voltage limit value corresponding to the preset power range of (0 - 12W) is Z, and the second voltage limit value corresponding to the preset power range of [12W, 30W) is Y, and Z < Y. It should be noted that at this time, if all the received power values are within the power range of [30W, 50W], that is, greater than the preset power value, then the charging power related information does not satisfy the preset step-down condition, and the wireless charging transmitter can continue to charge the wireless charging receiver with the first voltage limit value X, and X > Y.
[0087] In this embodiment, in the case where the received power information includes received power values at multiple different moments within a preset time period, when all the received power values are within the same preset power range, the preset voltage limit value corresponding to this preset power range is determined as the second voltage limit value, realizing the determination of the second voltage limit value and providing a target for the adjustment of the first voltage limit value. Configuring the preset power ranges so that different preset power ranges correspond to different preset voltage limit values, and the larger the maximum value, the larger the preset voltage limit value corresponding to the preset power range, can provide multiple levels for the second voltage limit value, making the second voltage limit value adapt to the power range of the received power value of the wireless charging receiver, fully considering the influence of the power range where the received power value is located on the requirement for the degree of voltage limit reduction, ensuring the stability of charging with the second voltage limit value, and improving the user experience.
[0088] In some embodiments, the difference between the preset voltage limit values corresponding to adjacent preset power ranges is the same.
[0089] The difference between the preset voltage limit values corresponding to adjacent preset power ranges is set to be the same, so that when the received power value changes from one preset power range to an adjacent preset power range, the change value of the second voltage limit value is the same. This allows the second voltage limit value to correspond to a relatively stable change trend when the received power value of the wireless charging receiver changes significantly.
[0090] In this embodiment, the difference between the preset voltage limit values corresponding to adjacent preset power ranges is set to be the same, so that when the second voltage limit value changes with the preset power range in which the preset power value is located, it can correspond to a relatively stable change trend. This avoids the second voltage limit value changing too much, which would cause insufficient working voltage control accuracy or response speed of the wireless charging receiver. This ensures the stability of continuous charging with changing second voltage limit values and improves the user experience.
[0091] In some embodiments, reference Figure 2 As shown, in response to connecting to a wireless charging receiver, charging the wireless charging receiver with a first voltage limit value includes:
[0092] S110, in response to connecting to the wireless charging receiver, performs protocol authentication with the wireless charging receiver.
[0093] In step S110, when the wireless charging transmitter is connected to the wireless charging receiver, protocol authentication is performed with the wireless charging receiver. The protocol authentication is used to identify the ID and other identifiers of the wireless charging receiver to authenticate the wireless charging receiver, so that the wireless charging transmitter can determine whether the wireless charging receiver is compatible with the wireless charging transmitter, and the wireless charging receiver can determine whether the wireless charging transmitter is compatible with the wireless charging receiver.
[0094] S120. In response to successful protocol authentication, determine a first voltage limit value corresponding to the wireless charging receiver and charge the wireless charging receiver using the first voltage limit value.
[0095] In step S120, when the protocol authentication is successful, it means that the wireless charging transmitter and the wireless charging receiver are compatible with each other and can transmit power and data information between the wireless charging transmitter and the wireless charging receiver. Then, a first voltage limit value corresponding to the wireless charging receiver is determined and the wireless charging receiver is charged with the first voltage limit value.
[0096] In this embodiment, when the wireless charging transmitter and the wireless charging receiver are connected, protocol authentication is performed with the wireless charging receiver. Upon successful authentication, a first voltage limit value corresponding to the wireless charging receiver is determined, and the wireless charging receiver is charged using this first voltage limit value. This enables the wireless charging transmitter to charge the wireless charging receiver using the first voltage limit value. Protocol authentication allows for the identification of the wireless charging receiver, determining whether the wireless charging transmitter and receiver are compatible, and ensuring the stability of charging the wireless charging receiver using the first voltage limit value.
[0097] In some embodiments, the wireless charging control method further includes: in response to successful protocol authentication, determining a preset voltage limit value that corresponds one-to-one with a plurality of preset power ranges based on a first voltage limit value.
[0098] As mentioned earlier, when determining the second voltage limit value based on the received power information, it is necessary to determine the second voltage limit value based on the preset voltage limit value corresponding to the preset power range in which each received power value is located. When the protocol authentication between the wireless charging transmitter and the wireless charging receiver is successful, the preset voltage limit value corresponding to multiple preset power ranges can be determined based on the determined first voltage limit value, so that the correspondence between the preset power range and the preset voltage limit value can be used as the basis for determining the second voltage limit value.
[0099] In this embodiment, when the protocol authentication between the wireless charging transmitter and the wireless charging receiver is successful, a preset voltage limit value corresponding to multiple preset power ranges is determined based on the determined first voltage limit value. This provides a basis for determining the second voltage limit value and ensures that the correspondence between the preset power range and the preset voltage limit value can be adapted to the first voltage limit value. This guarantees the voltage limit value reduction effect under different preset power ranges and further improves the stability when charging with the second voltage limit value.
[0100] It should be noted that the wireless charging transmitter can also collect charging power-related information such as received power information or temperature value from the wireless charging receiver when the protocol authentication is successful. This allows the acquisition of charging power-related information when it is determined that the wireless charging transmitter and the wireless charging receiver are compatible, providing a basis for whether the preset voltage reduction conditions are met.
[0101] In some embodiments, the wireless charging control method further includes: re-determining a first voltage limit value in response to reconnection after disconnection from the wireless charging receiver.
[0102] If the wireless charging transmitter and the wireless charging receiver are disconnected and then reconnected, the first voltage limit value is redefined and the wireless charging receiver is charged using the redefined first voltage limit value. The charging power information of the wireless charging receiver is then reassessed to see if it meets the preset voltage reduction condition. If the preset voltage reduction condition is met, the first voltage limit value is adjusted to the second voltage limit value, so that the wireless charging transmitter and the wireless charging receiver can execute the above wireless charging control method according to the redefined first voltage limit value after reconnection.
[0103] In this embodiment, when the wireless charging transmitter and the wireless charging receiver are disconnected and then reconnected, the first voltage limit value is redefined so that the wireless charging transmitter and the wireless charging receiver can control the voltage limit value according to the redefined first voltage limit value after reconnection. This ensures that each charging control process can be adapted to the current connection scenario and conditions, guaranteeing the accuracy and adaptability of the wireless charging control method.
[0104] In one exemplary embodiment, a wireless charging control method is provided, applied to a wireless charging transmitter, with reference to... Figure 3 As shown, the wireless charging control method includes:
[0105] S1. In response to connecting to the wireless charging receiver, perform protocol authentication with the wireless charging receiver.
[0106] S2. In response to successful protocol authentication, determine the first voltage limit value corresponding to the wireless charging receiver, and charge the wireless charging receiver with the first voltage limit value.
[0107] S3. Based on the first voltage limit value, determine the preset voltage limit value that corresponds one-to-one with multiple preset power ranges;
[0108] S4. In response to a preset number of received power values at different times within a preset time period being lower than a preset power value, and all received power values being within the same preset power range, the preset voltage limit value corresponding to the preset power range is determined as the second voltage limit value.
[0109] S5. Charge the wireless charging receiver with the second voltage limit value.
[0110] In this embodiment, when connected to a wireless charging receiver, the receiver is charged with a first voltage limit value. When the receiver's power value meets a preset voltage reduction condition, it is charged with a second voltage limit value. This controls the voltage limit value of the wireless charging transmitter during the wireless charging process. Using the charging power of the receiver as the criterion for meeting the preset voltage reduction condition ensures that the voltage limit value of the transmitter matches the charging power of the receiver. By adjusting the first voltage limit value to the second voltage limit value, the operating voltage of the receiver is reduced, avoiding safety hazards caused by voltage surges and improving the user experience.
[0111] In one exemplary embodiment, a wireless charging control device is provided, applied to a wireless charging transmitter, with reference to... Figure 4 As shown, the wireless charging control device includes a charging module 10 and a step-down module 20. The charging module 10 is used to charge the wireless charging receiver at a first voltage limit value in response to being connected to the wireless charging receiver. The step-down module 20 is used to charge the wireless charging receiver at a second voltage limit value in response to the charging power related information of the wireless charging receiver meeting a preset step-down condition. The charging power related information can characterize the charging power of the wireless charging receiver, and the second voltage limit value is less than the first voltage limit value.
[0112] In this embodiment, when connected to a wireless charging receiver, the charging module 10 charges the wireless charging receiver at a first voltage limit value. When the charging power information of the wireless charging receiver meets a preset voltage reduction condition, the voltage reduction module 20 charges the wireless charging receiver at a second voltage limit value, thus controlling the voltage limit value of the wireless charging transmitter during the wireless charging process. Using the charging power of the wireless charging receiver as the basis for whether the preset voltage reduction condition is met ensures that the voltage limit value of the wireless charging transmitter is compatible with the charging power of the wireless charging receiver. By adjusting the first voltage limit value to the second voltage limit value, the operating voltage of the wireless charging receiver is reduced, avoiding safety hazards caused by voltage surges and improving the user experience.
[0113] In one embodiment, the charging power related information includes received power information, which includes received power values at multiple different times.
[0114] In one embodiment, the preset voltage reduction condition includes: a preset number of received power values being lower than a preset power value; or, the average of the received power values at multiple different times being lower than the preset power value.
[0115] In one embodiment, the charging power related information includes the offset information of the wireless charging receiver relative to the wireless charging transmitter, the offset information including the offset size of the wireless charging receiver relative to the wireless charging transmitter, and the preset voltage reduction condition including: the offset size is greater than a preset size; or, the charging power related information includes the temperature value of the wireless charging receiver, and the preset voltage reduction condition including: the temperature value is higher than a preset temperature threshold.
[0116] In one embodiment, the step-down module 20 is further configured to: determine a second voltage limit value based on charging power related information, and charge the wireless charging receiver with the second voltage limit value.
[0117] In one embodiment, when the charging power related information includes received power information, the buck module 20 is further configured to: determine a second voltage limit value based on the received power information.
[0118] In one embodiment, when the received power information includes received power values at multiple different times within a preset time period, the step-down module 20 is further configured to: in response to each received power value being within the same preset power range, determine the preset voltage limit value corresponding to the preset power range as the second voltage limit value; wherein, multiple preset power ranges are sequentially set, in two adjacent preset power ranges, the maximum value of one preset power range is less than the minimum value of the other preset power range, different preset power ranges correspond to different preset voltage limit values, and the preset voltage limit value corresponding to the preset power range with the larger maximum value is larger.
[0119] In one embodiment, the difference between the preset voltage limit values corresponding to adjacent preset power ranges is the same.
[0120] In one embodiment, the charging module 10 is further configured to: in response to connecting to the wireless charging receiver, perform protocol authentication with the wireless charging receiver; and in response to successful protocol authentication, determine a first voltage limit value corresponding to the wireless charging receiver and charge the wireless charging receiver with the first voltage limit value.
[0121] In one embodiment, the charging module 10 is further configured to: in response to successful protocol authentication, determine a preset voltage limit value corresponding to a plurality of preset power ranges based on a first voltage limit value.
[0122] In one embodiment, the charging module 10 is further configured to: re-determine the first voltage limit value in response to reconnecting after disconnection from the wireless charging receiver.
[0123] In one exemplary embodiment, an electronic device is provided, with reference to Figure 5As shown, the electronic device may include one or more of the following components: processing component 101, memory 102, power component 103, multimedia component 104, audio component 105, input / output (I / O) interface 106, sensor component 107, and communication component 108.
[0124] Processing component 101 typically controls the overall operation of an electronic device, such as operations associated with display, telephone calls, data communication, camera operation, and recording. Processing component 101 may include one or more processors 109 to execute instructions to perform all or part of the steps of the methods described above. Furthermore, processing component 101 may include one or more modules to facilitate interaction between processing component 101 and other components. For example, processing component 101 may include a multimedia module to facilitate interaction between multimedia component 104 and processing component 101.
[0125] Memory 102 is configured to store various types of data to support the operation of the electronic device. Examples of such data include instructions for any application or method used to operate on the electronic device, contact data, phonebook data, messages, pictures, videos, etc. Memory 102 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.
[0126] Power component 103 provides power to various components of the electronic device. Power component 103 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the electronic device.
[0127] Multimedia component 104 includes a screen that provides an output interface between the electronic device and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touchscreen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may sense not only the boundaries of touch or swipe actions but also the duration and pressure associated with the touch or swipe operation. In some embodiments, multimedia component 104 includes a front-facing camera and / or a rear-facing camera. When the electronic device is in an operating mode, such as a shooting mode or a video mode, the front-facing camera and / or the rear-facing camera may receive external multimedia data. Each front-facing camera and rear-facing camera may be a fixed optical lens system or have focal length and optical zoom capabilities.
[0128] Audio component 105 is configured to output and / or input audio signals. For example, audio component 105 includes a microphone (MIC) configured to receive external audio signals when the electronic device is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 102 or transmitted via communication component 108. In some embodiments, audio component 105 also includes a speaker for outputting audio signals.
[0129] I / O interface 106 provides an interface between processing component 101 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, home buttons, volume buttons, power buttons, and lock buttons.
[0130] Sensor assembly 107 includes one or more sensors for providing state assessments of various aspects of the electronic device. For example, sensor assembly 107 can detect the on / off state of the electronic device, the relative positioning of components such as the display and keypad of the electronic device, changes in the position of the electronic device or a component of the electronic device, the presence or absence of user contact with the electronic device, the orientation or acceleration / deceleration of the electronic device, and temperature changes of the electronic device. Sensor assembly 107 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 107 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, sensor assembly 107 may also include an accelerometer, a gyroscope, a magnetometer, a pressure sensor, or a temperature sensor.
[0131] Communication component 108 is configured to facilitate wired or wireless communication between electronic devices and other devices. Devices can access wireless networks based on communication standards, such as WiFi, 2G, or 3G, or combinations thereof. In one exemplary embodiment, communication component 108 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 108 also includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.
[0132] In an exemplary embodiment, the electronic device may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the wireless charging control method applied to the electronic device described above.
[0133] In one exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 102 including instructions, which can be executed by a processor 109 of an electronic device to perform the wireless charging control method applied to the electronic device described above. For example, the non-transitory computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc. When the instructions in the storage medium are executed by the processor 109 of the electronic device, the electronic device is able to perform the wireless charging control method shown in the above embodiment.
[0134] In one exemplary embodiment, a computer program product is also provided, including a computer program that, when executed by processor 109, implements the wireless charging control method shown in the above embodiments.
[0135] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims.
[0136] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.
Claims
1. A wireless charging control method, characterized in that, The wireless charging control method includes: In response to connection with a wireless charging receiver, the wireless charging receiver is charged with a first voltage limit value; In response to the charging power related information of the wireless charging receiver meeting a preset voltage reduction condition, the wireless charging receiver is charged with a second voltage limit value. The charging power related information can characterize the charging power of the wireless charging receiver, and the second voltage limit value is less than the first voltage limit value.
2. The wireless charging control method according to claim 1, characterized in that, The charging power related information includes received power information, which includes received power values at multiple different times.
3. The wireless charging control method according to claim 2, characterized in that, The preset voltage reduction conditions include: a preset number of received power values being lower than a preset power value; or... The average of the received power values at multiple different times is lower than the preset power value.
4. The wireless charging control method according to any one of claims 1 to 3, characterized in that, The charging power related information includes the offset information of the wireless charging receiver relative to the wireless charging transmitter. The offset information includes the offset size of the wireless charging receiver relative to the wireless charging transmitter. The preset voltage reduction condition includes: the offset size is greater than a preset size; or... The charging power related information includes the temperature value of the wireless charging receiver, and the preset voltage reduction condition includes: the temperature value is higher than a preset temperature threshold.
5. The wireless charging control method according to claim 1, characterized in that, Charging the wireless charging receiver with the second voltage limit value includes: determining the second voltage limit value based on the charging power related information, and charging the wireless charging receiver with the second voltage limit value.
6. The wireless charging control method according to claim 5, characterized in that, When the charging power-related information includes received power information, determining the second voltage limit value based on the charging power information includes: Based on the received power information, the second voltage limit value is determined.
7. The wireless charging control method according to claim 6, characterized in that, When the received power information includes received power values at multiple different times within a preset time period, determining the second voltage limit value based on the received power information includes: In response to the fact that all the received power values are within the same preset power range, the preset voltage limit value corresponding to the preset power range is determined as the second voltage limit value; The preset power range is set in sequence with multiple preset power ranges. In two adjacent preset power ranges, the maximum value of one preset power range is less than the minimum value of the other preset power range. Different preset power ranges correspond to different preset voltage limits. The preset power range with the larger maximum value corresponds to a larger preset voltage limit.
8. The wireless charging control method according to claim 7, characterized in that, The difference between the preset voltage limit values corresponding to adjacent preset power ranges is the same.
9. The wireless charging control method according to any one of claims 1 to 3, characterized in that, The step of responding to connection with a wireless charging receiver and charging the wireless charging receiver with a first voltage limit value includes: In response to connecting to the wireless charging receiver, protocol authentication is performed with the wireless charging receiver; In response to the successful authentication of the protocol, a first voltage limit value corresponding to the wireless charging receiver is determined and the wireless charging receiver is charged using the first voltage limit value.
10. The wireless charging control method according to claim 9, characterized in that, The wireless charging control method further includes: In response to the successful authentication of the protocol, based on the first voltage limit value, a preset voltage limit value corresponding to a plurality of preset power ranges is determined.
11. The wireless charging control method according to any one of claims 1 to 3, characterized in that, The wireless charging control method further includes: In response to reconnection after disconnection from the wireless charging receiver, the first voltage limit value is re-determined.
12. A wireless charging control device, characterized in that, The wireless charging control device includes: A charging module, the charging module being configured to charge the wireless charging receiver at a first voltage limit value in response to connection with the wireless charging receiver; A step-down module is provided, which is used to charge the wireless charging receiver with a second voltage limit value in response to the charging power related information of the wireless charging receiver meeting a preset step-down condition. The charging power related information can characterize the charging power of the wireless charging receiver, and the second voltage limit value is less than the first voltage limit value.
13. An electronic device, characterized in that, The electronic device includes: processor; Memory used to store processor-executable instructions; The processor is configured to perform the wireless charging control method as described in any one of claims 1 to 11.
14. A non-transitory computer-readable storage medium, characterized in that, When the instructions in the storage medium are executed by the processor of the electronic device, the electronic device is able to perform the wireless charging control method as described in any one of claims 1 to 11.
15. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the wireless charging control method as described in any one of claims 1 to 11.