CN114825672A - Wireless charging method and electronic equipment - Google Patents
Wireless charging method and electronic equipment Download PDFInfo
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- CN114825672A CN114825672A CN202210433175.6A CN202210433175A CN114825672A CN 114825672 A CN114825672 A CN 114825672A CN 202210433175 A CN202210433175 A CN 202210433175A CN 114825672 A CN114825672 A CN 114825672A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
- H02J7/00036—Charger exchanging data with battery
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00309—Overheat or overtemperature protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
Abstract
The invention provides a wireless charging method and electronic equipment, wherein the wireless charging method comprises the following steps: the method comprises the steps that the electronic equipment collects the temperature of a battery in the charging process; when the battery temperature is greater than or equal to the temperature protection threshold value, the electronic equipment sends a charging pause instruction to the wireless power transmitting equipment; during the charging suspension, when the reduction amplitude of the battery temperature within the preset time period is less than or equal to the first temperature threshold, the electronic device sends a charging resuming instruction to the wireless power transmitting device. When the battery temperature is higher than or equal to the temperature protection threshold value, the control module sends a charging pause instruction to the wireless power transmitting equipment, so that the safety problem caused by overhigh battery temperature can be avoided. During the charging suspension, when the reduction amplitude of the battery temperature within the preset time period is less than or equal to the first temperature threshold, the control module sends a charging resuming instruction to the wireless power transmitting equipment. The charging time can be prevented from being too long when the battery is restarted after the charging is suspended, and the charging efficiency is improved.
Description
Technical Field
The present invention relates to the field of wireless charging, and in particular, to a wireless charging method and an electronic device.
Background
Along with the progress of technology, the application of wireless charging in small-size electronic equipment is more and more common, especially along with Apple watch of Apple company supports wireless charging, and in intelligent wearing equipment, wireless charging technology has pulled open the industrialization process.
In the wireless mode of charging of current intelligent wearing equipment, often adopt the wireless charging of electromagnetic induction formula, the wireless charging of electromagnetic induction formula will lead to a large amount of thermal production, and this is especially outstanding in miniaturized intelligent wearing equipment (for example intelligent wrist-watch). If the equipment battery if the high temperature will lead to battery life to reduce, arouse equipment to burn out and cause the accident even, current battery all is provided with the protection temperature that charges, and when the battery temperature reachd preset the temperature, equipment will control wireless transmitting terminal that charges no longer for battery charging. However, if the battery charging time is too long, the use experience of the device will be affected. In the prior art, a scheme for improving charging efficiency when charging is resumed after wireless charging is suspended is not provided, so that the purpose of quick charging is achieved.
Disclosure of Invention
An object of the embodiments of the present invention is to provide a wireless charging method and an electronic device, which can suspend charging when a battery temperature reaches a protection temperature, and resume charging when the battery temperature decreases, and simultaneously meet requirements for safety and fast charging.
An embodiment of the present application provides an electronic device, and the electronic device includes:
a battery;
a wireless power receiving circuit for receiving power from a wireless power transmitting apparatus;
a charging circuit for charging the battery according to the power received by the wireless power receiving circuit;
the temperature sensor is used for acquiring the temperature of the battery;
the control module is used for sending a charging pause instruction to the wireless power transmitting equipment when the temperature of the battery is greater than or equal to the temperature protection threshold value during charging; and during the charging suspension, when the reduction amplitude of the battery temperature in a preset time period is less than or equal to a first temperature threshold value, the control module sends a charging resuming instruction to the wireless power transmission device.
According to the electronic device of the invention, the charging process of the electronic device comprises a plurality of charging cycles, and the charging cycles refer to the period from the charging start to the charging suspension and then to the charging resumption.
According to the electronic device, the control module is further used for obtaining a battery temperature change curve in a pause charging period in the first charging period, calculating a sampling point with the maximum slope change in the temperature change curve, and taking the battery temperature corresponding to the sampling point as a second temperature threshold;
the control module is further configured to send a suspend charging instruction to the wireless power transmitting device in each charging period after the first charging period when the battery temperature is greater than or equal to the temperature protection threshold, and send a resume charging instruction to the wireless power transmitting device when the battery temperature during the suspend charging is less than or equal to the second temperature threshold.
According to the electronic equipment, the control module is further used for obtaining a battery temperature change curve in a charging pause period in the first charging period, calculating a sampling point with the maximum slope change in the temperature change curve, and taking the time from sending a charging pause instruction to the sampling point as the battery cooling time;
the control module is further configured to send a suspend charging instruction to the wireless power transmitting device in each charging period after the first charging period when the battery temperature is greater than or equal to the temperature protection threshold, and send a resume charging instruction to the wireless power transmitting device after a suspend charging time during the suspend charging reaches the battery cooling time.
According to the electronic device of the present invention, the control module is further configured to send a charging stop instruction to the wireless power transmitting device when the battery is charged.
The invention also provides a wireless charging method, which comprises the following steps:
the method comprises the steps that the electronic equipment collects the temperature of a battery in the charging process;
when the battery temperature is greater than or equal to the temperature protection threshold value, the electronic equipment sends a charging pause instruction to the wireless power transmitting equipment;
during the charging suspension, when the reduction amplitude of the battery temperature within the preset time period is less than or equal to the first temperature threshold, the electronic device sends a charging resuming instruction to the wireless power transmitting device.
According to the wireless charging method, the charging process of the electronic equipment comprises a plurality of charging cycles, wherein the charging cycles refer to the period from charging starting to charging suspending and charging resuming.
According to the wireless charging method, the method further comprises the following steps: the electronic equipment acquires a battery temperature change curve during the charging suspension period in the first charging period, calculates a sampling point with the maximum slope change in the temperature change curve, and takes the battery temperature corresponding to the sampling point as a second temperature threshold;
the electronic device sends a suspend charging instruction to the wireless power transmitting device when the battery temperature is greater than or equal to a temperature protection threshold in each charging cycle after the first charging cycle, and sends a resume charging instruction to the wireless power transmitting device when the battery temperature during suspend charging is less than or equal to a second temperature threshold.
According to the wireless charging method, the method further comprises the following steps:
the electronic equipment acquires a battery temperature change curve in a charging pause period in a first charging period, calculates a sampling point with the maximum slope change in the temperature change curve, and acquires the time from the sending of a charging pause instruction to the sampling point as the battery cooling time;
the electronic device transmits a suspend charging instruction to the wireless power transmission device when the battery temperature is greater than or equal to the temperature protection threshold in each charging period after the first charging period, and transmits a resume charging instruction to the wireless power transmission device when a suspend charging time during the suspend charging reaches a battery cooling time.
According to the wireless charging method, the method further comprises the following steps:
and when the battery is charged, the electronic equipment sends a charging stopping instruction to the wireless power transmitting equipment.
In the embodiment of the application, the charging circuit of the electronic equipment charges the battery according to the power received by the wireless power receiving circuit, the temperature sensor collects the temperature of the battery in the charging process in real time, and when the temperature of the battery is greater than or equal to the temperature protection threshold value, the control module sends a charging suspension instruction to the wireless power transmitting equipment, so that the safety problem caused by overhigh temperature of the battery can be avoided. And during the charging suspension, when the reduction amplitude of the battery temperature in a preset time period is less than or equal to a first temperature threshold value, the control module sends a charging resuming instruction to the wireless power transmitting equipment. When charging is suspended, the battery is naturally cooled, the temperature is reduced, and because the temperature reduction amplitude of the battery in unit time is smaller and smaller when the battery is naturally cooled, in order to improve the charging efficiency, the threshold value (first temperature threshold value) of the temperature reduction amplitude of the battery in unit time is set.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a block diagram of an electronic device provided by one embodiment of the invention;
FIG. 2 is a diagram illustrating a change in battery temperature during wireless charging of an electronic device according to the prior art;
FIG. 3 is a schematic diagram illustrating a change in battery temperature during wireless charging of an electronic device according to an embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating a variation in battery temperature during wireless charging of an electronic device according to another embodiment of the present invention;
FIG. 5 is a flowchart of an embodiment of an application of a wireless charging method performed by an electronic device according to the present invention;
FIG. 6 is a flowchart of another embodiment of an application of a wireless charging method performed by an electronic device according to the present invention;
fig. 7 is a flowchart of a wireless charging method according to an embodiment of the present invention;
fig. 8 is a flowchart of another wireless charging method according to an embodiment of the present invention;
fig. 9 is a flowchart of another wireless charging method according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The wireless power transmitting device is configured to wirelessly charge the electronic device by magnetic induction, and the wireless power transmitting device may be a charging base adapted to the electronic device or a charging platform. The electronic device may be any electronic device comprising a receiving coil, such as a smart watch, a smart phone, etc. When charging is carried out, the transmitting coil of the wireless power transmitting equipment is overlapped with and aligned with the receiving coil of the electronic equipment, the transmitting coil of the wireless power transmitting equipment converts a high-frequency alternating-current signal into a magnetic field, the receiving coil of the electronic equipment converts the high-frequency alternating-current signal into electric energy after inducing the magnetic field, and then the electric energy is charged by a battery after rectification and filtering.
Fig. 1 is a block diagram of an electronic device provided by an embodiment of the invention. The electronic device 100 includes a battery 10, a receiving coil 20, a wireless power receiving circuit 30, a charging circuit 40, a temperature sensor 50, and a control module 60.
Wherein the wireless power receiving circuit 30 is connected to the receiving coil 20 for receiving power from the wireless power transmitting apparatus and transmitting the power to the charging circuit 40, the wireless power receiving circuit 30 may include at least a ac-dc converting circuit for converting ac power into dc power that can be supplied to the battery 10.
A charging circuit 40 for charging the battery 10 according to the power received by the wireless power receiving circuit 30. The charging circuit 40 is used for controlling parameters such as current and voltage during charging according to instructions of the control module 60, and for example, the battery 10 may be charged by constant voltage, constant current, eddy current, and the like.
And a temperature sensor 50 for collecting the temperature of the battery 10. The Temperature sensor 50 may employ an NTC (Negative Temperature Coefficient) thermistor in close contact with the battery 10, and when the Temperature of the battery 10 changes, the resistance value of the NTC thermistor changes, so that the Temperature of the battery 10 can be obtained by measuring the resistance value.
And a control module 60 for transmitting a charge suspension instruction to the wireless power transmitting apparatus when the temperature of the battery 10 is greater than or equal to the temperature protection threshold value at the time of charging. And during the suspended charging, when the reduction range of the temperature of the battery 10 within the preset time period is less than or equal to the first temperature threshold, the control module 60 transmits a charge resuming instruction to the wireless power transmitting apparatus. The electronic device 100 may communicate with the wireless power transmitting device, for example, a communication protocol based on a wireless charging standard, which may be a Qi standard or a PMA standard, so that the electronic device 100 may control the transmission power and the transmission state of the wireless power transmitting device.
In the embodiment of the present application, the charging circuit 40 of the electronic device 100 charges the battery 10 according to the power received by the wireless power receiving circuit 30, the temperature sensor 50 collects the temperature of the battery 10 in the charging process in real time, and when the temperature of the battery 10 is greater than or equal to the temperature protection threshold, the control module 60 sends a charging suspension instruction to the wireless power transmitting device, so as to avoid the safety problem caused by the over-high temperature of the battery 10. Where the temperature protection threshold is the temperature protection threshold of the battery 10, the temperature protection threshold of the battery 10 is usually a fixed value given by the manufacturer of the battery 10, and in order to avoid damaging the battery 10, when the temperature of the battery 10 reaches the temperature protection threshold, the charging is suspended. When the wireless power transmitting apparatus suspends charging, the battery 10 will naturally cool, and the temperature of the battery 10 naturally decreases. When the temperature of the battery 10 is lowered to a certain degree, the wireless power transmitting apparatus may charge the battery 10 again. The control module 60 is also configured to send a stop charging instruction to the wireless power transmitting apparatus when the battery 10 is completely charged.
In the prior art, a high temperature threshold and a low temperature threshold are usually set, when the battery rises to the high temperature threshold, the charging is suspended, and when the battery cools to the low temperature threshold, the wireless power transmitting apparatus charges the battery again. Fig. 2 is a diagram illustrating a change in battery temperature when the electronic device 100 is wirelessly charged in the related art. As shown in fig. 2, when the battery is charged, the temperature of the battery first rises rapidly, then when a certain temperature is reached, the temperature rise tends to be slow, when a high temperature threshold (50 degrees celsius as shown in fig. 2) is reached, the wireless power transmitting device suspends charging, the battery of the electronic device 100 cools naturally, the temperature of the battery first drops rapidly and then drops slowly, and when a low temperature threshold (e.g., 38 degrees celsius as shown in fig. 2) is reached, the wireless power transmitting device restarts to charge the battery again. It can be seen that when charging is suspended, the battery temperature is rapidly cooled (fast change region) and then slowly cooled (slow change region). The battery cooling system is influenced by environmental factors such as weather and seasons, the environmental temperature is different, and the temperature change curve of the battery during cooling is different. If the value of the low temperature threshold is too low, the battery may not be cooled to the temperature threshold for a long time in an environment with a high temperature, or the battery temperature may not be cooled to the temperature threshold at all, so that the battery cannot be charged. If the low-temperature threshold is set to be too high, the battery is rapidly cooled to the low-temperature threshold, the wireless power transmitting equipment is started immediately after the battery is cooled for a short time, the battery is rapidly heated to the high-temperature threshold, and charging is suspended again, so that the charging time is too short, and rapid charging cannot be finished.
Considering that the battery is naturally cooled, the temperature of the battery is quickly cooled and then slowly cooled. Based on this characteristic, in the embodiment of the present application, instead of setting a fixed low temperature threshold, a threshold of the temperature drop amplitude of the battery per unit time is set, that is, when the drop amplitude of the battery within a preset time period is less than or equal to the first temperature threshold, the wireless power transmitting apparatus is controlled to charge the battery again.
Fig. 3 is a schematic diagram illustrating a change in battery temperature when the electronic device 100 is wirelessly charged according to an embodiment of the present invention. As shown in fig. 3, the charging process of the electronic device 100 includes a plurality of charging cycles, only 6 charging cycles (T1-T6) are shown in fig. 3, and in practice, the charging process of the electronic device 100 may include more than 1 charging cycle. The charging cycle is a period from the start of charging to the suspension of charging and then to the resumption of charging. That is, when the electronic device 100 suspends charging from the start of charging until the battery reaches the high temperature protection threshold, and then the battery temperature decreases to the preset threshold, the process of restarting charging is referred to as one charging cycle. As shown in fig. 3, in this embodiment, in each charging cycle, the electronic device 100 starts charging until the battery temperature reaches the temperature protection threshold (50 degrees celsius), suspends charging, then the battery cools naturally, and when the temperature of the battery cooled in 30 seconds is less than 0.5 degrees, the wireless power transmitting device is controlled to start charging again. When the battery is temporarily stopped to be charged, the battery is rapidly cooled firstly and then slowly cooled, and the reduced temperature in the same time period is less and less, so that the threshold value of the reduction amplitude of the battery temperature in the preset time period can be preset, and when the reduction amplitude of the battery temperature in the preset time period is less than or equal to the threshold value, the wireless power transmitting equipment is controlled to start charging again, the battery is prevented from being cooled for a long time, the battery charging time can be shortened, the charging efficiency is improved, and the influence of the environmental temperature is avoided. The present embodiment sets the condition for the electronic device 100 to send the resume charging instruction to be that the temperature of the battery cooled in 30 seconds is less than 0.5 degrees, and may also set to decrease by 1 degree in 1 minute. Since the electronic device 100 periodically samples the battery temperature, the preset time period may be set equal to 1 or more battery temperature sampling periods, for example, the battery temperature sampling period of the electronic device 100 is 5s, which may preset a battery cooling threshold within 5s, or battery cooling thresholds within 10s, 15s, and 20 s. Compared with the prior art, the embodiment does not set a fixed low-temperature threshold value for recovering charging, but sets a temperature drop amplitude in a preset time period, so that the problem that the low-temperature threshold value is too high or too low to complete quick charging or cannot reach the low-temperature threshold value is avoided, and the charging efficiency is favorably improved.
Fig. 4 is a schematic diagram illustrating a change in battery temperature when the electronic device 100 is wirelessly charged according to another embodiment of the invention. In this embodiment, the control module is further configured to obtain a battery temperature variation curve during a charging pause period in the first charging period, calculate a sampling point with the maximum slope variation in the temperature variation curve, and use a battery temperature corresponding to the sampling point as the second temperature threshold. And the control module is further used for sending a charging pause instruction to the wireless power transmitting equipment when the battery temperature is greater than or equal to the temperature protection threshold value in each charging period after the first charging period, and sending a charging resume instruction to the wireless power transmitting equipment when the battery temperature during the charging pause period is less than or equal to the second temperature threshold value. As shown in fig. 4, in the initial charging period (T1), the threshold for the battery to resume charging may adopt the threshold condition as shown in fig. 3, that is, the temperature cooled in 30 seconds is less than 0.5 degrees; when the first charging period (T1) is finished, the control module acquires a battery temperature change curve in a charging pause period in the first charging period, and calculates a sampling point with the maximum slope change in the temperature change curve, wherein the point with the maximum slope is calculated as an X point, and the corresponding battery temperature is 43.2 ℃; in each charging cycle (T2, T3, T4 … …) after the first charging cycle (T1), the battery temperature threshold for resuming charging is set to 43.2 degrees celsius, and the control module transmits a resume charging instruction to the wireless power transmitting apparatus when the battery temperature sampled by the electronic apparatus 100 is less than or equal to 43.2 degrees celsius. The control module is further used for sending a charging pause instruction to the wireless power transmitting equipment in each charging period after the first charging period when the battery temperature is greater than or equal to the temperature protection threshold value, and sending a charging recovery instruction to the wireless power transmitting equipment when the battery temperature during the charging pause is less than or equal to the second temperature threshold value.
Wherein, the sampling point with the maximum slope change is calculated by adopting the following method: if the difference between the slope of a certain sampling point and the slope of the previous sampling point is the maximum of all the sampling points, the sampling point is the sampling point with the maximum slope change; or obtaining the slope of a first straight line formed by a certain sampling point and a previous sampling point and the slope of a second straight line formed by the sampling point and a next sampling point, calculating the slope difference between the first straight line and the second straight line, and if the slope difference between the first straight line and the second straight line corresponding to the certain sampling point is the maximum of all the sampling points, determining that the sampling point has the maximum slope change. In the embodiment, through the sampling point with the maximum slope change, the sampling point with the sudden temperature change in the temperature change curve during the cooling of the battery can be found, and after the sudden change sampling point, the temperature of the battery is slowly reduced. Therefore, in the subsequent charging period, when the battery temperature is cooled to the battery temperature corresponding to the abrupt change sampling point, the charging recovery instruction is sent to the wireless power transmitting equipment, the rapid change area in the battery cooling process can be utilized to the maximum extent, the battery is immediately recovered to be charged after the rapid cooling of the battery is finished, the battery can be prevented from being cooled for a long time, the charging time of the battery can be shortened, and the charging efficiency is improved.
In some embodiments, the control module is further configured to obtain a temperature variation curve of the battery during the charging pause period in the first charging period, calculate a sampling point of the temperature variation curve where the slope changes most, and take a time from the issuance of the charging pause instruction to the sampling point as the cooling time of the battery. And the control module is further used for sending a charging pause instruction to the wireless power transmitting equipment when the temperature of the battery is greater than or equal to the temperature protection threshold value in each charging period after the first charging period, and sending a charging resume instruction to the wireless power transmitting equipment when the charging pause time during the charging pause time reaches the battery cooling time. Referring to fig. 4, in the initial charging period (T1), the threshold for the battery to resume charging may adopt the threshold condition shown in fig. 3, that is, the temperature cooled in 30 seconds is less than 0.5 degrees; when the first charging period (T1) is over, the control module obtains a battery temperature change curve in a charging pause period in the first charging period, and calculates a sampling point with the maximum slope change in the temperature change curve, the point with the maximum slope is calculated as an X point, and the time between the electronic device 100 sending a charging pause instruction in the charging period and the sampling point X is T1; in each charging cycle (T2, T3, T4 … …) after the first charging cycle (T1), the control module issues a suspend charging instruction when the battery temperature reaches a temperature protection threshold due to charging, and when the suspend charging time reaches T1, the control module transmits a resume charging instruction to the wireless power transmitting apparatus. Since the ambient temperature remains substantially constant during a single charge, the temperature change as the battery cools is substantially the same. In the embodiment, the sampling point of the temperature mutation in the temperature change curve when the battery is cooled is found out through the sampling point with the maximum slope change; and calculating the time required for the battery to be cooled to the temperature of the temperature abrupt change sampling point from the battery temperature protection threshold value as the battery cooling time, and in the subsequent charging period, after the control module sends a charging pause instruction, sending a charging resume instruction to the wireless power transmitting equipment to request to resume charging after the charging pause time reaches the battery cooling time. Thereby in battery cooling process, need not constantly to monitor battery temperature, only need arrive battery cooling time and request promptly to resume charging, be favorable to reducing the consumption, make the battery lower the temperature more fast to can the maximize utilize the rapid change district of battery cooling in-process, resume charging immediately after the battery rapid cooling finishes, can avoid waiting for the battery cooling for a long time, thereby can shorten battery charge time, promote charge efficiency.
Fig. 5 is a flowchart of an application embodiment of a wireless charging method performed by an electronic device according to the present invention. The method comprises the following steps:
in step S501, the electronic device starts wireless charging.
In step S502, the temperature sensor of the electronic device detects the temperature of the battery.
In step S503, whether the battery temperature is greater than or equal to the temperature protection threshold value. The temperature protection threshold is a temperature protection threshold of the battery. If yes, go to step S504, otherwise, go to step S503.
In step S504, the electronic device sends a charging suspension instruction to the wireless power transmitting device.
In step S505, the wireless power transmitting apparatus suspends transmitting power.
In step S506, the electronic device determines whether to perform the first charging cycle. The charging cycle refers to a period from the start of charging to the suspension of charging, and then to the resumption of charging, and the charging process of the electronic device may include a plurality of charging cycles. If yes, go to step S507, otherwise go to step S508.
Specifically, the electronic device may record the number of times of suspending charging, and if the charging is suspended for the first time, the charging period is the first charging period. The electronic device may determine whether to perform the first charging cycle according to whether or not a second temperature threshold described below is stored. The second temperature threshold is the battery temperature corresponding to the sampling point with the maximum slope change in the battery temperature change curve in the charging suspension period in the first charging period.
In step S507, the electronic device determines that the reduction amplitude of the battery temperature in the preset time period is less than or equal to a first temperature threshold. If yes, go to step S509, otherwise, continue to step S507.
In step S508, the electronic device determines whether the battery temperature is less than or equal to a second temperature threshold. If yes, go to step S510, otherwise, go to step S508.
In step S509, the electronic device obtains a battery temperature variation curve during the charge suspension period in the first charging period, calculates a sampling point with the maximum slope variation in the battery temperature variation curve during the charge suspension period, and stores the battery temperature corresponding to the sampling point as the second temperature threshold. And then proceeds to step S510.
In step S510, the electronic device sends a charging resuming instruction to the wireless power transmitting device. In the first charging period, step S509 and step S510 may be performed simultaneously. That is, the electronic device calculates a sampling point with the maximum slope change in the battery temperature change curve during the charging suspension period while sending the charging resuming instruction to the wireless power transmitting device, and stores the battery temperature corresponding to the sampling point as the second temperature threshold.
In step S511, the wireless power transmitting apparatus resumes the transmission power. And then returns to step S503.
During the charging of the battery, the electronic equipment continuously judges whether the electric quantity of the battery is full, and if the electric quantity of the battery is full, the electronic equipment sends a charging stopping instruction to the wireless power transmitting equipment.
Fig. 6 is a flowchart of another application embodiment of the wireless charging method performed by the electronic device provided in the present invention. The method comprises the following steps:
in step S601, the electronic device starts wireless charging.
In step S602, a temperature sensor of the electronic device detects a temperature of the battery.
Step S603, whether the battery temperature is greater than or equal to the temperature protection threshold. The temperature protection threshold is a temperature protection threshold of the battery. If yes, go to step S604, otherwise continue to determine.
In step S604, the electronic device sends a charging suspension instruction to the wireless power transmitting device.
In step S605, the wireless power transmitting apparatus suspends transmitting power.
In step S606, the electronic device determines whether to perform the first charging cycle. The charging cycle refers to a period from the start of charging to the suspension of charging, and then to the resumption of charging, and the charging process of the electronic device may include a plurality of charging cycles. If yes, the process proceeds to step S607, otherwise, the process proceeds to step S608.
Specifically, the electronic device may record the number of times of suspending charging, and if the charging is suspended for the first time, the charging period is the first charging period. The electronic device may determine whether to perform the first charging cycle based on whether the battery cooling time described below is stored. The battery cooling time is the time from the sending of a charging pause instruction to the sampling point with the maximum slope change in the battery temperature change curve during the charging pause period of the electronic equipment in the first charging period, and the battery cooling time is obtained in the first charging period and stored in the electronic equipment.
In step S607, the electronic device determines that the reduction amplitude of the battery temperature in the preset time period is less than or equal to the first temperature threshold. If yes, go to step S609, otherwise, continue to step S607.
In step S608, the electronic device determines whether the charging pause time reaches the battery cooling time. If yes, go to step S610, otherwise, go to step S608.
In step S609, the electronic device obtains a battery temperature variation curve during the charging suspension period in the first charging period, calculates a sampling point with the maximum slope variation in the battery temperature variation curve during the charging suspension period, obtains a time from sending the charging suspension instruction to the sampling point, and records the time as the battery cooling time of the subsequent charging period. And then proceeds to step S810.
In step S610, the electronic device sends a resume charging instruction to the wireless power transmitting device. In the first charging period, step S610 and step S609 may be performed simultaneously. That is, the electronic device calculates a sampling point with the maximum slope change in the battery temperature change curve during the charging suspension period while sending the charging resuming instruction to the wireless power transmitting device, and stores the battery temperature corresponding to the sampling point as the second temperature threshold.
In step S611, the wireless power transmitting apparatus restores the transmission power. And then returns to step S603.
During the charging of the battery, the electronic equipment continuously judges whether the electric quantity of the battery is full, and if the electric quantity of the battery is full, the electronic equipment sends a charging stopping instruction to the wireless power transmitting equipment.
Fig. 7 is a flowchart of a wireless charging method according to an embodiment of the present invention. The wireless charging method is applied to the electronic device shown in fig. 1. The wireless charging method comprises the following steps:
s701, the electronic equipment collects the temperature of the battery in the charging process.
S702, when the battery temperature is greater than or equal to the temperature protection threshold, the electronic device sends a suspend charging instruction to the wireless power transmitting device.
And S703, during the charging suspension, when the reduction amplitude of the battery temperature in the preset time period is less than or equal to the first temperature threshold, the electronic equipment sends a charging resuming instruction to the wireless power transmitting equipment. The charging process of the electronic device may include a plurality of charging cycles, where a charging cycle refers to a period from the start of charging to the suspension of charging, and then to the resumption of charging.
In some embodiments, the wireless charging method further comprises: and when the battery is charged, the electronic equipment sends a charging stopping instruction to the wireless power transmitting equipment.
Fig. 8 is a flowchart of another wireless charging method according to an embodiment of the present invention. The wireless charging method is applied to the electronic device shown in fig. 1. The wireless charging method comprises the following steps:
s801, collecting the temperature of the battery by the electronic equipment in the charging process.
And S802, when the temperature of the battery is greater than or equal to the temperature protection threshold value, the electronic equipment sends a charging pause instruction to the wireless power transmitting equipment.
S803, during the suspension of charging, when the decrease amplitude of the battery temperature within the preset time period is less than or equal to the first temperature threshold, the electronic device sends a resume charging instruction to the wireless power transmitting device. The charging process of the electronic device may include a plurality of charging cycles, where a charging cycle refers to a period from the start of charging to the suspension of charging, and then to the resumption of charging.
S804, the electronic device obtains a battery temperature change curve during the charging suspension period in the first charging period, calculates a sampling point with the maximum slope change in the temperature change curve, and takes the battery temperature corresponding to the sampling point as a second temperature threshold.
S805, the electronic device sends a suspend charging instruction to the wireless power transmitting device when the battery temperature is greater than or equal to the temperature protection threshold in each charging cycle after the first charging cycle, and sends a resume charging instruction to the wireless power transmitting device when the battery temperature during suspend charging is less than or equal to the second temperature threshold.
Fig. 9 is a flowchart of another wireless charging method according to an embodiment of the present invention. The wireless charging method is applied to the electronic device shown in fig. 1. The wireless charging method comprises the following steps:
s901, the electronic equipment collects the temperature of the battery in the charging process.
And S902, when the battery temperature is greater than or equal to the temperature protection threshold value, the electronic equipment sends a charging pause instruction to the wireless power transmitting equipment.
And S903, during the charging suspension, when the reduction amplitude of the battery temperature in a preset time period is less than or equal to a first temperature threshold value, the electronic equipment sends a charging resuming instruction to the wireless power transmitting equipment. The charging process of the electronic device may include a plurality of charging cycles, where a charging cycle refers to a period from the start of charging to the suspension of charging, and then to the resumption of charging.
S904, the electronic device obtains a battery temperature change curve in a charging pause period in the first charging period, calculates a sampling point with the maximum slope change in the temperature change curve, and obtains the time from the sending of a charging pause instruction to the sampling point as the cooling time of the battery.
S905, in each charging period after the first charging period, the electronic device sends a charge suspending instruction to the wireless power transmitting device when the battery temperature is greater than or equal to the temperature protection threshold, and sends a charge resuming instruction to the wireless power transmitting device when the charge suspending time during the charge suspending period reaches the battery cooling time.
In summary, in the embodiment of the present application, the charging circuit of the electronic device charges the battery according to the power received by the wireless power receiving circuit, the temperature sensor collects the temperature of the battery in the charging process in real time, and when the battery temperature is greater than or equal to the temperature protection threshold, the control module sends the charging suspension command to the wireless power transmitting device, so that the safety problem caused by the overhigh battery temperature can be avoided. And during the charging suspension, when the reduction amplitude of the battery temperature in a preset time period is less than or equal to a first temperature threshold value, the control module sends a charging resuming instruction to the wireless power transmitting equipment. When charging is suspended, the battery is naturally cooled, the temperature is reduced, and because the temperature reduction amplitude of the battery in unit time is smaller and smaller when the battery is naturally cooled, in order to improve the charging efficiency, the threshold value (first temperature threshold value) of the temperature reduction amplitude of the battery in unit time is set.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative and, for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, the functional modules in the embodiments of the present invention may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk, and various media capable of storing program codes.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An electronic device, the electronic device comprising:
a battery;
a wireless power receiving circuit for receiving power from a wireless power transmitting apparatus;
a charging circuit for charging the battery according to the power received by the wireless power receiving circuit;
the temperature sensor is used for acquiring the temperature of the battery;
the control module is used for sending a charging pause instruction to the wireless power transmitting equipment when the battery temperature is greater than or equal to a temperature protection threshold value during charging; and during charging suspension, when the reduction amplitude of the battery temperature in a preset time period is less than or equal to a first temperature threshold value, the control module sends a charging resuming instruction to the wireless power transmitting equipment.
2. The electronic device of claim 1,
the charging process of the electronic equipment comprises a plurality of charging cycles, wherein the charging cycles refer to the period from charging starting to charging suspending and charging resuming.
3. The electronic device of claim 2,
the control module is further used for acquiring a battery temperature change curve in a pause charging period in the first charging period, calculating a sampling point with the maximum slope change in the temperature change curve, and taking the battery temperature corresponding to the sampling point as a second temperature threshold;
the control module is further configured to, in each charging cycle after the first charging cycle, send a suspend charging instruction to the wireless power transmitting apparatus when the battery temperature is greater than or equal to the temperature protection threshold, and send a resume charging instruction to the wireless power transmitting apparatus when the battery temperature during suspend charging is less than or equal to the second temperature threshold.
4. The electronic device of claim 2,
the control module is also used for acquiring a battery temperature change curve in a charging pause period in the first charging period, calculating a sampling point with the maximum slope change in the temperature change curve, and taking the time from the sending of a charging pause instruction to the sampling point as the battery cooling time;
the control module is further configured to send a charging pause instruction to the wireless power transmitting device in each charging period after the first charging period when the battery temperature is greater than or equal to the temperature protection threshold, and send a charging resume instruction to the wireless power transmitting device after the charging pause time during the charging pause reaches the battery cooling time.
5. The electronic device of claim 1, wherein the control module is further configured to send a stop charging instruction to the wireless power transmitting device when the battery is charged.
6. A wireless charging method, the method comprising:
the method comprises the steps that the electronic equipment collects the temperature of a battery in the charging process;
when the battery temperature is greater than or equal to a temperature protection threshold value, the electronic equipment sends a charging pause instruction to the wireless power transmitting equipment;
during charging suspension, when the reduction amplitude of the battery temperature in a preset time period is smaller than or equal to a first temperature threshold value, the electronic equipment sends a charging resuming instruction to the wireless power transmitting equipment.
7. The wireless charging method according to claim 6,
the charging process of the electronic equipment comprises a plurality of charging cycles, wherein the charging cycles refer to the period from charging starting to charging suspending and charging resuming.
8. The wireless charging method of claim 7, further comprising:
the electronic equipment acquires a battery temperature change curve during the charging suspension period in the first charging period, calculates a sampling point with the maximum slope change in the temperature change curve, and takes the battery temperature corresponding to the sampling point as a second temperature threshold value;
the electronic device sends a charging pause instruction to the wireless power transmitting device when the battery temperature is greater than or equal to the temperature protection threshold value in each charging period after the first charging period, and sends a charging resume instruction to the wireless power transmitting device when the battery temperature during the charging pause is less than or equal to the second temperature threshold value.
9. The wireless charging method of claim 7, further comprising:
the electronic equipment acquires a battery temperature change curve in a charging pause period in a first charging period, calculates a sampling point with the maximum slope change in the temperature change curve, and acquires the time from the sending of a charging pause instruction to the sampling point as the battery cooling time;
and in each charging period after the first charging period, the electronic equipment sends a charging pause instruction to the wireless power transmitting equipment when the battery temperature is greater than or equal to the temperature protection threshold value, and sends a charging resume instruction to the wireless power transmitting equipment when the charging pause time during the charging pause reaches the battery cooling time.
10. The wireless charging method of claim 6, further comprising:
and when the battery is charged, the electronic equipment sends a charging stopping instruction to the wireless power transmitting equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210433175.6A CN114825672A (en) | 2022-04-24 | 2022-04-24 | Wireless charging method and electronic equipment |
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| CN202210433175.6A CN114825672A (en) | 2022-04-24 | 2022-04-24 | Wireless charging method and electronic equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117154872A (en) * | 2023-08-01 | 2023-12-01 | 南京汤峰机电有限公司 | Lithium battery charging control method and system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117154872A (en) * | 2023-08-01 | 2023-12-01 | 南京汤峰机电有限公司 | Lithium battery charging control method and system |
| CN117154872B (en) * | 2023-08-01 | 2023-12-29 | 南京汤峰机电有限公司 | Lithium battery charging control method and system |
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