Charging control method of mobile power supply

Abstract

The invention discloses a charging control method for a mobile power supply, and the method comprises the steps: determining the maximum output total power of the mobile power supply through obtaining a charging input connection state; meanwhile, communication information of the wireless charging equipment is collected, and the total power required by simultaneous charging of all the equipment is calculated; then, comparing the two power values, and distributing initial charging power for the equipment; in order to further optimize, a charging power rate index is calculated, a power adjusting gradient is set to determine an optimal charging power rate interval, and in the interval, a current optimal charging power rate value is calculated, and the charging power is adjusted; according to the scheme, the power can be dynamically adjusted according to the charging state, the equipment requirement and the charging efficiency, the charging efficiency is ensured, overload of the mobile power supply is avoided, and the service life is prolonged; and meanwhile, the intelligent power distribution enables a plurality of devices to finish charging at the same time, so that the use convenience and satisfaction of users are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of mobile power supplies, and in particular to a charging control method of a mobile power supply. Background Art

[0002] With the widespread use of portable electronic wireless charging devices such as smartphones, tablets, and wireless headphones, users have put forward higher requirements for the battery life of wireless charging devices. However, the built-in battery capacity of these wireless charging devices is limited and cannot meet the needs of long-term use. Mobile power supplies have emerged as an effective solution to this problem. Mobile power supplies store electrical energy and provide power support to electronic wireless charging devices when the power is low, greatly extending the use time of wireless charging devices.

[0003] The Chinese invention patent with patent application number 202410314954.3 discloses a wireless charging output method for a mobile power supply: determining first power information according to the charging input connection status of the mobile power supply; obtaining first required power information and charging required information according to the wireless charging communication information with the first wireless charging device; calculating first total required power information according to the first required power information; judging whether the first power information is greater than the first total required power information; if so, setting the charging power of the first wireless charging device according to the first required power information; if not, setting the charging power of the first wireless charging device according to the charging required information; the present invention not only ensures that the mobile power supply charges multiple wireless charging devices at the same time, but also ensures the charging efficiency of each wireless charging device, thereby improving the user experience.

[0004] Although this method has made significant progress in charging efficiency, wireless charging device compatibility, and power distribution uniformity, there are still some problems. For example, the charging power is simply matched by the power threshold of the power source and the rated power of the wireless charging device being charged, but the actual charging time, that is, the efficiency, is unknown. Factors such as the position between the wireless charging device being charged and the power source, the collection shell barrier, etc., make the actual charging time still long even if the solution with patent application number 202410314954.3 matches the corresponding power. Summary of the invention

[0005] The present application provides a charging control method for a mobile power supply, which dynamically adjusts the charging power of a charging wireless charging device to find the optimal charging power for each wireless charging device, improves the charging efficiency, and ensures that the mobile power supply can charge multiple wireless charging devices simultaneously within a preset power range.

[0006] The present application provides a charging control method for a mobile power supply, comprising: S1, obtaining charging input connection status information and determining first output power information; wherein the first output power information is the maximum total output power that the mobile power supply can provide to all connected wireless charging devices in real time; S2, obtaining wireless charging communication information of the wireless charging device, and calculating first total required power information; wherein the first total required power information refers to the total power required for all wireless charging devices to charge simultaneously when connected to the wireless charging device; S3, comparing the first output power information with the first total required power information, and allocating an initial charging power; S4, calculating the charging power rate index, setting the charging power adjustment gradient, and obtaining the optimal charging power rate index range; wherein the charging power adjustment gradient is two upper and lower power test points set based on the current charging power of the wireless charging device.

[0007] S5, calculating the current optimal charging power rate value within the optimal charging power rate index range, and adjusting the charging power.

[0008] Preferably, the S4 comprises: S4A, the mobile power supply records the power increase of each wireless charging device every n seconds and calculates the charging power rate index; S4B, for each wireless charging device, two upper and lower charging power gradients are set based on its current charging power; S4C, charging for n seconds at these two charging powers respectively, comparing the charging power rate indexes at the three charging power points, and determining the optimal charging power rate index range for each wireless charging device.

[0009] Preferably, the S5 comprises: S5A, subdividing the power adjustment gradient into half gradients within the optimal charging power rate index interval, and repeating the steps of S4C to further subdivide the power test points; S5B, based on S5A, sets the half gradient to a quarter gradient, and obtains the current optimal charging power rate value through slope calculation; S5C, adding the optimal charging power rate value of each wireless charging device to obtain a sum of the optimal charging power rate values; wherein the sum of the optimal charging power rate values ​​is the sum of the optimal charging power rate values ​​of all wireless charging devices; S5D, if the optimal charging power rate value exceeds the first output power information of the mobile power source, starting from the wireless charging device with the highest charging power rate index, adjust the charging power of each device one by one, and search for the optimal value along its power change path toward the low power direction; S5E: If the adjusted optimal charging power rate still exceeds the first output power information and the power of any device cannot be further reduced without affecting its normal charging, the charging power of all wireless charging devices is reduced proportionally until the total power meets the first output power information.

[0010] Preferably, the S5 further includes: S51, real-time monitoring of the connection status of the wireless charging device, including the addition of a new wireless charging device and the removal of an existing wireless charging device; S52, when the wireless charging device connected to the mobile power source changes, recalculate the first output power information and the second total required power information of the current mobile power source; wherein the second total required power information is the total power required when the current wireless charging devices use their respective required powers to charge at the same time after the wireless charging devices connected to the mobile power source are temporarily removed from the connection; S53, evaluating a linear index of a power efficiency value change of a wireless charging device currently connected to the mobile power source during a charging process after a temporary access removal change occurs to the wireless charging device; S54, setting a linear index threshold, when the linear index of the wireless charging device connected to the mobile power source is higher than the threshold, determining and adjusting the optimal charging power rate of the wireless charging device higher than the threshold; S55, for the newly added wireless charging device, allocating charging power to it according to the first output power information of the current mobile power source, the remaining power, and the optimal charging power rate value required by the new wireless charging device; S56, continuously monitor the connection status of the wireless charging device in real time, and repeat the above steps when a new wireless charging device is added or removed.

[0011] Preferably, the S53 includes: power efficiency value = (output charging power / input power) × 100%, the output charging power refers to the charging power actually provided by the wireless charging device to the battery, and the input power refers to the total power provided by the mobile power supply to the wireless charging device; the linear index is used to evaluate the linearity of the change in the power efficiency value of the wireless charging device, and the larger the value, the higher the linearity.

[0012] Preferably, the S54 includes: S541, dividing the wireless charging devices into a good linear group and a nonlinear group according to the linear index threshold; S542, when a wireless charging device is newly added or removed, calculating an optimal charging power rate value required by the wireless charging device; S543, for the linear excellent group after the wireless charging device is newly added or removed, first determine the linear index and the optimal charging power rate value ratio of each wireless charging device, and then calculate the power that should be allocated to each wireless charging device; S544, arranging the wireless charging devices in the excellent linearity group in descending order according to the linearity index, and allocating power in sequence, so as to ensure that the wireless charging devices with large linearity index obtain the required power first; S545, when the allocated power of the excellent linear group exceeds its tolerance limit, select the wireless charging device with the largest linear index from the nonlinear group for power allocation; S546, continuously monitor the connection status of the wireless charging device in real time, and when a new wireless charging device is added or removed, repeat the above steps to adjust the power.

[0013] Preferably, the S543 includes: the power to be allocated to each wireless charging device = linear index * optimal charging power rate value ratio; optimal charging power rate value ratio = optimal charging power rate value of the wireless charging device / sum of optimal charging power rate values ​​of all wireless charging devices in the linear excellent group. The power to be allocated to each wireless charging device determines the share of each wireless charging device in the sum of the optimal charging power rate values ​​in the linear excellent group after it is newly added or removed.

[0014] Preferably, the S541 includes: S5411, when there are multiple newly added wireless charging devices, it is necessary to calculate the optimal charging power rate of these newly added devices; S5412, using the adjustable power of the wireless charging devices in the nonlinear group as the initial power allocated to the newly added wireless charging device, using the adjustable power of the excellent linear group as the change value of the gradient power, and calculating the linearity index of the newly added wireless charging device using the three power points obtained; S5413, for the wireless charging device newly added to the excellent linearity group, power allocation is performed according to S543; S5414: For a wireless charging device newly added to the nonlinear group, a half gradient and a quarter gradient are calculated to determine an optimal charging power rate value of the wireless charging device.

[0015] Preferably, the S5412 includes: the adjustable power is the power that can be allocated to the newly added wireless charging device by the current nonlinear group and the linear excellent group; the three power points are initial power, initial power+gradient power change value, and initial power-gradient power change value.

[0016] Preferably, the S541 includes: a good linear group including wireless charging devices having a linear index higher than a preset threshold, and the power efficiency values ​​of these wireless charging devices change closer to linearity, and the good linear group may be one or more groups; a nonlinear group including wireless charging devices having a linear index lower than a preset threshold, and the power efficiency values ​​of these wireless charging devices change nonlinearly.

[0017] One or more technical solutions provided in this application have at least the following technical effects or advantages: By finely managing the output power of the mobile power bank, the charging power of each wireless charging device is dynamically adjusted according to the charging input connection status, the needs of the wireless charging device, and the charging efficiency of the wireless charging device, which not only ensures the charging efficiency, but also effectively avoids the overload of the mobile power bank and prolongs the service life of the mobile power bank. At the same time, the solution can intelligently allocate power, so that multiple wireless charging devices can be charged more nearly at the same time, improving the user experience.

[0018] By monitoring the connection status of wireless charging devices in real time, including the addition of new wireless charging devices and the removal of existing wireless charging devices, the output power of the mobile power supply is dynamically adjusted to meet the changed charging needs. At the same time, by evaluating the linear index of wireless charging devices, the power of wireless charging devices with more linear power efficiency values ​​is adjusted first to ensure the stability of the overall charging efficiency.

[0019] By evaluating the linearity index of wireless charging devices, they are divided into a good linear group and a non-linear group, and the charging power is dynamically adjusted according to the characteristics and needs of the wireless charging device group. The wireless charging devices in the good linear group are relatively insensitive to power adjustment, so power allocation can be prioritized, while the wireless charging devices in the non-linear group have power allocation as needed. By continuously monitoring the connection status of wireless charging devices, the solution can quickly respond to changes in the addition or removal of wireless charging devices, ensuring the continuity and stability of the charging process.

[0020] The adjustable power of the wireless charging devices in the nonlinear group is used as the initial power to allocate to the new devices, and the adjustable power of the linear excellent group is used as the gradient power change value to obtain three power points to calculate the linear index of the new devices. This method not only realizes dynamic power allocation, but also can accurately allocate the new devices to the linear group or nonlinear group according to the linear index, thereby improving the flexibility and adaptability of the charging system. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The figure is a flow chart of a charging control method of a mobile power source according to an embodiment of the present invention. DETAILED DESCRIPTION

[0022] To facilitate the understanding of the present invention, the present application will be described more comprehensively below with reference to the relevant drawings; the drawings show preferred embodiments of the present invention, but the present invention can be implemented in many different forms and is not limited to the embodiments described herein; on the contrary, the purpose of providing these embodiments is to enable a more thorough and comprehensive understanding of the disclosed content of the present invention.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs; the terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the term "and / or" used herein includes any and all combinations of one or more related listed items.

[0024] Embodiment 1: Figure 1 As shown, a charging control method for a mobile power source includes the following steps: S1, obtaining charging input connection status information and determining first output power information.

[0025] The first output power information is the maximum total output power that the mobile power supply can provide to all connected wireless charging devices in real time.

[0026] Specifically, step S1 includes: S1A, determining whether the mobile power supply is currently connected to a charger, and if the mobile power supply is not connected to a charger, using a preset first output power threshold; The first output power threshold is the default output power when the mobile power supply is not connected to a charger.

[0027] S1B, if the mobile power supply is connected to a charger, the current power level of the mobile power supply is detected; S1C, if the power level is lower than the preset power threshold and the charger input power is insufficient to support simultaneous charging and output, the mobile power supply enters the charging state and uses the preset second output power threshold; if the power level subsequently rises and exceeds the low power threshold and the charger input power is sufficient, the mobile power supply exits the charging state and goes to S1D; The second output power threshold is a lower output power set when the mobile power source is being charged and the power level is lower than a certain threshold in order to protect the battery and avoid over-discharge.

[0028] S1D: If the power level is higher than or equal to the preset power level threshold, the mobile power source exits the charging state and uses the preset third output power threshold.

[0029] The third output power threshold is the maximum output power that can be provided when the mobile power source is fully charged or the power level is higher than a certain threshold.

[0030] S2, obtaining wireless charging communication information of the wireless charging device, and calculating first total required power information.

[0031] Among them, the wireless charging device refers to the wireless charging device that is currently connected to the mobile power supply and needs to be charged; the wireless charging device is a wireless charging device such as a mobile phone, tablet, laptop computer, etc. that is connected to the mobile power supply and needs to be charged.

[0032] Specifically, the mobile power supply wirelessly communicates with each connected wireless charging device to obtain its wireless charging demand information; the power demand information of all wireless charging devices is added together to obtain the total power (first total power demand information) required for all wireless charging devices to be charged simultaneously when connected to the wireless charging device.

[0033] S3: Compare the first output power information with the first total required power information, and allocate initial charging power.

[0034] The initial charging power is set based on the remaining power of the wireless charging device and the current charging rate requirement of the wireless charging device, so that the charging completion time of the wireless charging devices is similar.

[0035] Specifically, step S3 includes: S3A, comparing the first output power information of the mobile power source with the first total required power information of all wireless charging devices S3B, if the first output power information is greater than the first total required power information, setting the charging power according to the required power information of each wireless charging device; S3C: If the first output power information is not greater than the first total required power information, the charging power of each wireless charging device is allocated based on the remaining power, charging rate requirement and total required power information of the wireless charging device and on the principle of similar charging completion time.

[0036] S4, calculating the charging power rate index, setting the charging power adjustment gradient, and obtaining the optimal charging power rate index range.

[0037] Among them, the charging power adjustment gradient is two upper and lower power test points set based on the current charging power of the wireless charging device.

[0038] Specifically, step S4 includes: S4A, the mobile power supply records the power increase of each wireless charging device every n seconds and calculates the charging power rate index; Among them, n seconds is the time interval used to calculate the charging power rate index; the charging power rate index is the ratio of the percentage of increase in the power of the wireless charging device to the current charging power, which is used to evaluate the charging efficiency.

[0039] S4B, for each wireless charging device, two upper and lower charging power gradients are set based on its current charging power; S4C, charging at these two charging powers for n seconds respectively, comparing the charging power rate indexes at the three charging power points, and determining the optimal charging power rate index range for each wireless charging device; For example, set the initial charging power (such as 40w), and then charge according to the gradient (such as 30w, 50w), 30w for n seconds, 50w for n seconds, and obtain the optimal charging power rate index range of the wireless charging device through the charging power rate index of the three points; if the upward adjustment gradient exceeds the maximum power threshold allowed by the current mobile power supply, take the current possible maximum value, and set it downward according to the gradient; the gradient adjustment between different wireless charging devices is not adjusted up and down at the same time, but is completed crosswise, basically maintaining the total power of multiple wireless charging devices (the first total required power information) near the preset maximum power value of the mobile power supply.

[0040] S5, calculating the current optimal charging power rate value within the optimal charging power rate index range, and adjusting the charging power.

[0041] The current optimal charging power rate value refers to a specific power value that makes the wireless charging device charge most efficiently.

[0042] Specifically, step S5 includes: S5A, subdividing the power adjustment gradient into half gradients within the optimal charging power rate index interval, and repeating the steps of S4C to further subdivide the power test points; For example, within the determined optimal charging power rate index range, the power gradient is further subdivided (such as taking the middle value of 40W and the middle value of 30W and 50W, 35W and 45W), and repeating the test process to narrow the optimal charging power rate value range.

[0043] S5B, based on S5A, sets the half gradient to a quarter gradient, and obtains the current optimal charging power rate value through slope calculation; Specifically, on the basis of the one-half gradient, the power gradient is further subdivided (such as taking the middle values ​​of 37.5w and 42.5w between 35w and 40w, and 40w and 45w), and the optimal charging power rate value is determined by slope calculation (i.e. comparing the exponential change rate of the charging power rate at different power points).

[0044] S5C, adding the optimal charging power rate value of each wireless charging device to obtain the sum of the optimal charging power rate values.

[0045] The optimal charging power rate value is the sum of the optimal charging power rate values ​​of all wireless charging devices.

[0046] Specifically, the optimal charging power rate values ​​of each wireless charging device are added together to obtain the optimal charging power rate value sum, and then the sum is compared with the current first output power information of the mobile power source.

[0047] S5D, if the optimal charging power rate value exceeds the first output power information of the mobile power source, starting from the wireless charging device with the highest charging power rate index, adjust the charging power one by one, and find the optimal value along its power change path toward the low power direction.

[0048] Among them, it is necessary to set a minimum power value for each wireless charging device to ensure that the wireless charging device will not be unable to charge normally due to too low power; the power change dotted line is a possible path for power adjustment of the wireless charging device, which is used to find the optimal charging power of the wireless charging device while keeping the total power (the first total required power information) not exceeding the first output power information.

[0049] S5E: If the adjusted optimal charging power rate still exceeds the first output power information and the power of any device cannot be further reduced without affecting its normal charging, the charging power of all wireless charging devices is reduced proportionally until the total power meets the first output power information.

[0050] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages: By finely managing the output power of the mobile power bank, the charging power of each wireless charging device is dynamically adjusted according to the charging input connection status, the needs of the wireless charging device, and the charging efficiency of the wireless charging device, which not only ensures the charging efficiency, but also effectively avoids the overload of the mobile power bank and prolongs the service life of the mobile power bank. At the same time, the solution can intelligently allocate power, so that multiple wireless charging devices can be charged more nearly at the same time, improving the user experience.

[0051] Embodiment 2: The above embodiment 1 ensures charging efficiency and avoids overload by dynamically adjusting the output power, and intelligently allocates power to optimize the charging experience of multiple wireless charging devices. If a temporary wireless charging device is added during the charging process, the optimal charging power rate value of the wireless charging device needs to be adjusted when the first output power information is rated; if the optimal charging power rate value of all wireless charging devices is adjusted, the overall charging power may work under low charging efficiency. At this time, the following solution is proposed to solve the problem of temporary wireless charging devices joining.

[0052] In some embodiments, step S5 further includes: S51, real-time monitoring of the connection status of the wireless charging device, including the addition of a new wireless charging device and the removal of an existing wireless charging device.

[0053] S52: When the wireless charging device connected to the mobile power source changes, the first output power information and the second total required power information of the current mobile power source are recalculated.

[0054] Among them, the second total required power information is the total power required when the current wireless charging device uses the first total required power information to charge after the wireless charging device connected to the mobile power supply undergoes a temporary access removal change (the total power required when the current wireless charging device uses its respective required power to charge at the same time after the wireless charging device connected to the mobile power supply undergoes a temporary access removal change).

[0055] S53, evaluating a linear exponential change in a power efficiency value of a wireless charging device currently connected to the mobile power source during a charging process after a temporary access removal change occurs to the wireless charging device.

[0056] Among them, the power efficiency value = (output charging power / input power) × 100%, the output charging power refers to the charging power actually provided by the wireless charging device to the battery, and the input power is the total power provided by the mobile power supply to the wireless charging device; the linearity index is used to evaluate the linearity of the change in the power efficiency value of the wireless charging device. The larger the value, the higher the linearity.

[0057] Specifically, by evaluating the linear index of the change in power efficiency value, it is identified which wireless charging devices' charging efficiency is more sensitive to power changes (i.e., the nonlinear change is larger) and which wireless charging devices' charging efficiency is relatively insensitive to power changes (i.e., the linear change is larger).

[0058] S54, setting a linear index threshold, when the linear index of the wireless charging device connected to the mobile power source is higher than the threshold, determining and adjusting the optimal charging power rate of the wireless charging device higher than the threshold.

[0059] The setting of the linear index threshold must ensure that the adjusted power distribution does not exceed the output range of the mobile power supply to avoid overload or damage, and comprehensively consider multiple factors such as the output capacity of the mobile power supply, the charging characteristics of the wireless charging device, and the stability of the overall charging efficiency. In actual applications, it is necessary to determine the most appropriate threshold through debugging to achieve the best power adjustment effect and charging efficiency.

[0060] Specifically, after calculating the linear index of the power efficiency value change of each wireless charging device, all wireless charging devices are traversed, their linear indexes are calculated, and wireless charging devices whose linear indexes are greater than the linear index threshold are selected. These devices are more sensitive to power changes and need to be adjusted first. The power is reduced in descending order according to the linear index to ensure the stability of the overall charging efficiency.

[0061] For example, assuming there are n wireless charging devices, the linear index of each wireless charging device is Li (i=1,2,...,n), and the linear index threshold is set to Lth; when a new wireless charging device is added, all wireless charging devices are traversed to calculate their linear indexes Li; wireless charging devices with Li>Lth are selected, and the power is reduced in ascending order according to the linear index until the new wireless charging device can be connected and the overall charging efficiency remains stable.

[0062] S55: For the newly added wireless charging device, charging power is allocated to it according to the first output power information of the current mobile power source, the remaining power, and the optimal charging power rate value required by the new wireless charging device.

[0063] The remaining power is the power of the difference between the first output power information and the second total required power information of all currently connected wireless charging devices (including newly added wireless charging devices) (note that when calculating the remaining power, the power adjustment of some wireless charging devices should have been considered).

[0064] Specifically, the charging power is allocated to the new wireless charging device based on the first output power information of the current mobile power source, the remaining power (the first output power information minus the second total required power information of all currently connected wireless charging devices) and the optimal charging power rate value required by the new wireless charging device; a portion of the power is allocated to the newly added device from the wireless charging devices with a large linear index, and for the removed wireless charging devices, the released power is reallocated to other wireless charging devices to try to keep the overall charging efficiency stable.

[0065] S56, continuously monitor the connection status of the wireless charging device in real time, and repeat the above steps when a new wireless charging device is added or removed.

[0066] When a new wireless charging device is added or removed, steps S52 to S55 are repeated. When no new wireless charging device is added or removed and the system is running stably, the process ends.

[0067] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages: By monitoring the connection status of wireless charging devices in real time, including the addition of new wireless charging devices and the removal of existing wireless charging devices, the output power of the mobile power supply is dynamically adjusted to meet the changed charging needs. At the same time, by evaluating the linear index of wireless charging devices, the power of wireless charging devices with more linear power efficiency values ​​is adjusted first to ensure the stability of the overall charging efficiency.

[0068] Embodiment 3: By real-time monitoring of the connection status of wireless charging devices, dynamically adjusting the charging power, and evaluating the linear index of the change in the power efficiency of wireless charging devices, an efficient and flexible response to the change in the power demand of wireless charging devices is achieved, the stability of the charging efficiency is ensured, and the power resources of the mobile power supply are maximized, and the stability and adaptability of the power of the wireless charging devices are enhanced. If multiple wireless charging devices join or exit charging at the same time, if the power of the current charging wireless charging devices is adjusted one by one in a sorted manner, the adjustment range of the wireless charging device with the best linearity will be too large, and the charging stability will be reduced. In order to solve this problem, step S54 of embodiment 2 is further improved.

[0069] In some embodiments, step S54 is specifically: S541, dividing the wireless charging devices into a good linearity group and a nonlinearity group according to the linearity index threshold.

[0070] Among them, the excellent linear group includes wireless charging devices with linear index higher than the preset threshold. The power efficiency values ​​of these wireless charging devices change closer to linearity and are relatively insensitive to power adjustment. The excellent linear group can be one or more groups; the nonlinear group includes wireless charging devices with linear index lower than the preset threshold. The power efficiency values ​​of these wireless charging devices change more nonlinearly and are more sensitive to power adjustment.

[0071] S542: When a wireless charging device is newly added or removed, an optimal charging power rate value required by the wireless charging device is calculated.

[0072] S543, for the linear excellent group after the wireless charging device is newly added or removed, first determine the linear index and the optimal charging power rate value ratio of each wireless charging device, and then calculate the power that should be allocated to each wireless charging device.

[0073] Among them, the calculation formula for the power that each wireless charging device should be allocated is: the power that the wireless charging device should allocate to the first total demand power information = the linear index of the first total demand power information * the proportion of the optimal charging power rate value of the first total demand power information; the proportion of the optimal charging power rate value = the first total demand power information of the optimal charging power rate value of the wireless charging device / the sum of the optimal charging power rate values ​​of all wireless charging devices in the linear excellent group of the first total demand power information (after new addition or removal). The power that each wireless charging device should allocate determines the share of each wireless charging device in the sum of the optimal charging power rate values ​​in the linear excellent group after new addition or removal.

[0074] S544, the wireless charging devices in the excellent linearity group are arranged in descending order according to the linearity index, and the power is allocated in sequence to ensure that the wireless charging devices with large linearity index obtain the required power first.

[0075] S545, when the power allocation of the excellent linear group meets the power demand of the new wireless charging device, select the wireless charging device with the largest linear index from the nonlinear group for power allocation.

[0076] S546, continuously monitor the connection status of the wireless charging device in real time, and when a new wireless charging device is added or removed, repeat the above steps to adjust the power.

[0077] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages: By evaluating the linearity index of wireless charging devices, they are divided into a good linear group and a non-linear group, and the charging power is dynamically adjusted according to the characteristics and needs of the wireless charging device group. The wireless charging devices in the good linear group are relatively insensitive to power adjustment, so power allocation can be prioritized, while the wireless charging devices in the non-linear group have power allocation as needed. By continuously monitoring the connection status of wireless charging devices, the solution can quickly respond to changes in the addition or removal of wireless charging devices, ensuring the continuity and stability of the charging process.

[0078] Embodiment 4: The above-mentioned embodiment 3 realizes an efficient and stable charging process by real-time monitoring of the connection status of wireless charging devices, grouping wireless charging devices according to linear indexes, and dynamically adjusting the charging power. However, when power is allocated by the method of embodiment 3, the newly added wireless charging devices may not obtain the optimal power allocation, resulting in low charging efficiency. At the same time, the power requirements of linear group and nonlinear group wireless charging devices may be different. If a unified power allocation strategy is adopted, it may not be able to meet the charging requirements of different wireless charging devices. Based on this problem, further improvements are made to embodiment 3.

[0079] In some embodiments, step S541 further includes: S5411, when there are multiple newly added wireless charging devices, the optimal charging power rate of these newly added devices needs to be calculated.

[0080] S5412, using the adjustable power of the wireless charging devices in the nonlinear group as the initial power allocated to the newly added wireless charging device, using the adjustable power of the excellent linear group as the change value of the gradient power, and calculating the linear index of the newly added wireless charging device using the three power points obtained.

[0081] Among them, the adjustable power is the power that the current nonlinear group and the linear excellent group can allocate to the newly added wireless charging device; the three power points are initial power, initial power + gradient power change value, and initial power - gradient power change value.

[0082] Among them, the newly added wireless charging devices with linear index higher than the preset threshold are allocated to the linear group; and the newly added wireless charging devices with linear index lower than the preset threshold are retained in the non-linear group.

[0083] S5413: For the wireless charging device newly added to the excellent linearity group, power allocation is performed according to S543.

[0084] S5414: For a wireless charging device newly added to the nonlinear group, a half gradient and a quarter gradient are calculated to determine an optimal charging power rate value of the wireless charging device.

[0085] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages: The adjustable power of the wireless charging devices in the nonlinear group is used as the initial power to allocate to the new devices, and the adjustable power of the linear excellent group is used as the gradient power change value to obtain three power points to calculate the linear index of the new devices. This method not only realizes dynamic power allocation, but also can accurately allocate the new devices to the linear group or nonlinear group according to the linear index, thereby improving the flexibility and adaptability of the charging system.

[0086] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A charging control method for a mobile power source, characterized in that: include: S1, obtaining charging input connection status information and determining first output power information; wherein the first output power information is the maximum total output power that the mobile power supply can provide to all connected wireless charging devices in real time; S2, obtaining wireless charging communication information of the wireless charging device, and calculating first total required power information; wherein the first total required power information refers to the total power required for all wireless charging devices to charge simultaneously when connected to the wireless charging device; S3, comparing the first output power information with the first total required power information, and allocating an initial charging power; S4, calculating the charging power rate index, setting the charging power adjustment gradient, and obtaining the optimal charging power rate index range; wherein the charging power adjustment gradient is two upper and lower power test points set based on the current charging power of the wireless charging device; S5, calculating the current optimal charging power rate value within the optimal charging power rate index range, and adjusting the charging power.

2. A charging control method for a mobile power source as claimed in claim 1, characterized in that: The S4 comprises: S4A, the mobile power supply records the power increase of each wireless charging device every n seconds and calculates the charging power rate index; S4B, for each wireless charging device, two upper and lower charging power gradients are set based on its current charging power; S4C, charging for n seconds at these two charging powers respectively, comparing the charging power rate indexes at the three charging power points, and determining the optimal charging power rate index range for each wireless charging device.

3. A charging control method for a mobile power source as claimed in claim 1, characterized in that: The S5 comprises: S5A, subdividing the power adjustment gradient into half gradients within the optimal charging power rate index interval, and repeating the steps of S4C to further subdivide the power test points; S5B, based on S5A, sets the half gradient to a quarter gradient, and obtains the current optimal charging power rate value through slope calculation; S5C, adding the optimal charging power rate value of each wireless charging device to obtain a sum of the optimal charging power rate values; wherein the sum of the optimal charging power rate values ​​is the sum of the optimal charging power rate values ​​of all wireless charging devices; S5D, if the optimal charging power rate value exceeds the first output power information of the mobile power source, starting from the wireless charging device with the highest charging power rate index, adjust the charging power of each device one by one, and search for the optimal value along its power change path toward the low power direction; S5E: If the adjusted optimal charging power rate still exceeds the first output power information and the power of any device cannot be further reduced without affecting its normal charging, the charging power of all wireless charging devices is reduced proportionally until the total power meets the first output power information.

4. A charging control method for a mobile power source as claimed in claim 1, characterized in that: The S5 further includes: S51, real-time monitoring of the connection status of the wireless charging device, including the addition of a new wireless charging device and the removal of an existing wireless charging device; S52, when the wireless charging device connected to the mobile power source changes, recalculate the first output power information and the second total required power information of the current mobile power source; wherein the second total required power information is the total power required when the current wireless charging devices use their respective required powers to charge at the same time after the wireless charging devices connected to the mobile power source are temporarily removed from the connection; S53, evaluating a linear index of a power efficiency value change of a wireless charging device currently connected to the mobile power source during a charging process after a temporary access removal change occurs to the wireless charging device; S54, setting a linear index threshold, when the linear index of the wireless charging device connected to the mobile power source is higher than the threshold, determining and adjusting the optimal charging power rate of the wireless charging device higher than the threshold; S55, for the newly added wireless charging device, allocating charging power to it according to the first output power information of the current mobile power source, the remaining power, and the optimal charging power rate value required by the new wireless charging device; S56, continuously monitor the connection status of the wireless charging device in real time, and repeat the above steps when a new wireless charging device is added or removed.

5. A charging control method for a mobile power source as claimed in claim 4, characterized in that: The S53 includes: power efficiency value = (output charging power / input power) × 100%, where the output charging power refers to the charging power actually provided by the wireless charging device to the battery, and the input power refers to the total power provided by the mobile power supply to the wireless charging device; the linearity index is used to evaluate the linearity of the change in the power efficiency value of the wireless charging device, and the larger the value, the higher the linearity.

6. A charging control method for a mobile power source as claimed in claim 1, characterized in that: The S54 comprises: S541, dividing the wireless charging devices into a good linear group and a nonlinear group according to the linear index threshold; S542, when a wireless charging device is newly added or removed, calculating an optimal charging power rate value required by the wireless charging device; S543, for the linear excellent group after the wireless charging device is newly added or removed, first determine the linear index and the optimal charging power rate value ratio of each wireless charging device, and then calculate the power that should be allocated to each wireless charging device; S544, arranging the wireless charging devices in the excellent linearity group in descending order according to the linearity index, and allocating power in sequence, so as to ensure that the wireless charging devices with large linearity index obtain the required power first; S545, when the allocated power of the excellent linear group exceeds its tolerance limit, select the wireless charging device with the largest linear index from the nonlinear group for power allocation; S546, continuously monitor the connection status of the wireless charging device in real time, and when a new wireless charging device is added or removed, repeat the above steps to adjust the power.

7. A charging control method for a mobile power source as claimed in claim 6, characterized in that: The S543 includes: the power to be allocated to each wireless charging device = linear index * optimal charging power rate value ratio; optimal charging power rate value ratio = optimal charging power rate value of the wireless charging device / sum of optimal charging power rate values ​​of all wireless charging devices in the linear excellent group. The power to be allocated to each wireless charging device determines the share of each wireless charging device in the sum of the optimal charging power rate values ​​in the linear excellent group after it is newly added or removed.

8. A charging control method for a mobile power source as claimed in claim 6, characterized in that: The S541 includes: S5411, when there are multiple newly added wireless charging devices, it is necessary to calculate the optimal charging power rate of these newly added devices; S5412, using the adjustable power of the wireless charging devices in the nonlinear group as the initial power allocated to the newly added wireless charging device, using the adjustable power of the excellent linear group as the change value of the gradient power, and calculating the linearity index of the newly added wireless charging device using the three power points obtained; S5413, for the wireless charging device newly added to the excellent linearity group, power allocation is performed according to S543; S5414: For a wireless charging device newly added to the nonlinear group, a half gradient and a quarter gradient are calculated to determine an optimal charging power rate value of the wireless charging device.

9. A charging control method for a mobile power source as claimed in claim 8, characterized in that: The S5412 includes: the adjustable power is the power that the current nonlinear group and the linear excellent group can allocate to the newly added wireless charging device; the three power points are initial power, initial power+gradient power change value, and initial power-gradient power change value.

10. A charging control method for a mobile power source as claimed in claim 6, characterized in that: The S541 includes: the good linear group includes wireless charging devices with linear index higher than a preset threshold, and the power efficiency values ​​of these wireless charging devices change closer to linearity. The good linear group can be one or more groups; the nonlinear group includes wireless charging devices with linear index lower than a preset threshold, and the power efficiency values ​​of these wireless charging devices change nonlinearly.

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