CN107248775B - Wireless charging method and mobile terminal - Google Patents
Wireless charging method and mobile terminal Download PDFInfo
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- CN107248775B CN107248775B CN201710552306.1A CN201710552306A CN107248775B CN 107248775 B CN107248775 B CN 107248775B CN 201710552306 A CN201710552306 A CN 201710552306A CN 107248775 B CN107248775 B CN 107248775B
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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
- H02J7/007188—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
- H02J7/007192—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature
Abstract
The embodiment of the invention discloses a wireless charging method and a mobile terminal. The method comprises the following steps: controlling n charging coils of the m parallel charging coils to charge, and respectively detecting the temperature of the area where the m parallel charging coils are located; respectively acquiring a first type of charging coil corresponding to an area where the temperature of the area where the m parallel charging coils are located exceeds the respective set threshold temperature, and a second type of charging coil corresponding to an area where the temperature of the area where the m parallel charging coils are located does not exceed the respective set threshold temperature; and controlling the charging coil which is being charged in the first type of charging coil to stop charging, and controlling the uncharged charging coil in the second type of charging coil to replace the charging coil which stops charging in the first type of charging coil to charge. According to the embodiment of the invention, the charging efficiency is ensured, and meanwhile, the problems that the temperature of a local area is too high, and other electronic components are lost or even failed are avoided.
Description
Technical Field
The embodiment of the invention relates to the field of communication, in particular to a wireless charging method of a terminal and a mobile terminal.
Background
Currently, Wireless charging technology (Wireless charging technology) is increasingly applied to various mobile terminals such as mobile phones and palm computers.
When the mobile terminal is charged by using a wireless charging technology, a charging coil in the mobile terminal is conducted with a charging IC to perform charging operation and generate current, and the current is transmitted to a battery of the mobile terminal so as to realize charging. During charging, the charging coil generates heat due to the transmission current. Especially when needs quick charge, if only utilize a charging coil to charge, this charging coil need operate with great power and transmit great electric current, cause the charging coil to generate heat more seriously, probably because of the regional high temperature in this charging coil place causes the loss of other electronic components in this region even inefficacy. Moreover, if the mobile terminal locally heats seriously, the user may think that the terminal quality is not good, and worry about the potential safety hazard of the terminal, thereby influencing the user experience.
Therefore, the wireless charging method in the prior art has the problem of causing the loss and even the failure of electronic components. Moreover, there is also a problem of poor user experience.
Disclosure of Invention
The invention provides a wireless charging method and a mobile terminal, and aims to solve the problem that the existing mobile terminal is high in local temperature and easy to damage the mobile terminal during charging.
In a first aspect, a wireless charging method for a terminal is provided, and is applied to a mobile terminal, where the mobile terminal includes m charging coils connected in parallel, and a region where each charging coil is located is provided with a threshold temperature, respectively, and the method includes:
controlling n charging coils of the m parallel charging coils to charge, and respectively detecting the temperature of the area where the m parallel charging coils are located, wherein n is more than 0 and less than m;
respectively acquiring a first type of charging coil corresponding to an area where the temperature of the area where the m parallel charging coils are located exceeds the respective set threshold temperature, and a second type of charging coil corresponding to an area where the temperature of the area where the m parallel charging coils are located does not exceed the respective set threshold temperature;
and controlling the charging coil which is being charged in the first type of charging coil to stop charging, and controlling the uncharged charging coil in the second type of charging coil to replace the charging coil which stops charging in the first type of charging coil to charge.
In a second aspect, a wireless charging method for a terminal is further provided, where the method is applied to a mobile terminal, and the mobile terminal includes at least 2 sets of charging coils connected in parallel, and the method includes:
respectively detecting the charging current and the temperature of the area of the at least 2 groups of charging coils which are connected in parallel during charging;
and adjusting the charging current of each group of charging coils in the at least 2 groups of charging coils connected in parallel until the average temperature of the area where the at least 2 groups of charging coils connected in parallel are located tends to be the same.
In a third aspect, a mobile terminal is further provided, where the mobile terminal includes m charging coils connected in parallel, an area where each charging coil is located is respectively provided with a threshold temperature, and the mobile terminal includes:
the first control module is used for controlling n charging coils in the m parallel charging coils to charge;
the first detection module is used for respectively detecting the temperature of the area where the m parallel charging coils are located, wherein 0< n < m;
the acquiring module is used for respectively acquiring a first type of charging coil corresponding to an area where the temperature of the area where the m parallel charging coils are located exceeds the respective set threshold temperature, and a second type of charging coil corresponding to an area where the temperature of the area where the m parallel charging coils are located does not exceed the respective set threshold temperature;
the first control module is further used for controlling the charging coil which is being charged in the first type of charging coil to stop charging, and controlling the charging coil which is not charged in the second type of charging coil to replace the charging coil which stops charging in the first type of charging coil to charge.
In a fourth aspect, there is also provided a mobile terminal including at least 2 sets of charging coils connected in parallel, the mobile terminal including:
the second detection module is used for respectively detecting the charging current of the at least 2 groups of charging coils connected in parallel during charging and the temperature of the area where the charging coils are located;
the second control module is used for adjusting the charging current of each group of charging coils in the at least 2 groups of charging coils connected in parallel until the average temperature of the area where the at least 2 groups of charging coils connected in parallel are located tends to be the same.
In the embodiment of the invention, the plurality of charging coils are arranged in the mobile terminal, the first type of charging coils and the second type of charging coils are respectively determined according to the temperature of the area where the plurality of charging coils are located, the uncharged second type of charging coils are controlled to replace the charging coils of the first type which are being charged, the charging current of each group of charging coils is adjusted according to the charging current of each group of charging coils and the temperature of the area where the charging coils are located, the temperature of the area where each group of charging coils are located is adjusted, the temperature values of all areas in the mobile terminal are relatively balanced, and therefore, the problems that the local area temperature of the mobile terminal is too high, and the loss and even failure of other electronic components are caused are avoided while the charging efficiency is ensured.
Drawings
Fig. 1 is a flowchart illustrating steps of a wireless charging method according to a first embodiment of the invention;
fig. 2 is a schematic distribution diagram of a plurality of charging coils in a mobile terminal according to a first embodiment of the present invention;
FIG. 3 is a schematic diagram of a control circuit for a plurality of charging coils according to an embodiment of the present invention;
fig. 4 is a flowchart illustrating a wireless charging method according to an embodiment of the invention;
fig. 5 is a flowchart illustrating steps of a wireless charging method according to a second embodiment of the present invention;
fig. 6 is a flowchart illustrating another wireless charging method according to a second embodiment of the present invention;
fig. 7 is a schematic diagram illustrating a distribution of a plurality of charging coils in a mobile terminal according to a second embodiment of the present invention;
fig. 8 is a schematic diagram of a control circuit of a plurality of charging coils according to a second embodiment of the present invention;
fig. 9 is a flowchart illustrating a wireless charging method according to a second embodiment of the present invention;
fig. 10 is a block diagram of a mobile terminal according to a third embodiment of the present invention;
fig. 11 is a block diagram of a mobile terminal according to a fourth embodiment of the present invention;
fig. 12 is a block diagram of a mobile terminal according to another embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Example one
Fig. 1 is a flowchart of steps of a wireless charging method according to an embodiment of the present invention, where the method is applied to a mobile terminal, where the mobile terminal includes m charging coils connected in parallel, and an area where each charging coil is located is respectively provided with a threshold temperature, and the method specifically includes the following steps:
step S10, controlling n charging coils of m parallel charging coils to charge, and detecting the temperature of the area where the m parallel charging coils are located, where 0< n < m (m and n are both positive integers).
It should be noted that the mobile terminal may specifically include a mobile phone, a palm computer, a tablet computer, and the like. M parallel charging coils may be provided in the mobile terminal. The specific value of m can be set by those skilled in the art according to actual needs, wherein 0< n < m.
In the concrete implementation, can control n charging coil among the m charging coil and charge, in the charging process, can detect the temperature value in this n charging coil place region according to predetermined time interval.
In practical applications, a charging IC may be further disposed in the mobile terminal, and the charging IC is respectively connected in series with the m charging coils. When the charging IC is conducted with the charging coil, the mobile terminal can be charged. The charging IC may include a charging Integrated Circuit (IC). The charging IC can have the functions of adjusting input voltage and current, monitoring circuit overheating and current overcurrent, automatically disconnecting circuit connection and the like.
Preferably, 1 thermistor is disposed in each of the regions where the m parallel charging coils are located, and the step of detecting the temperature of each of the regions where the m parallel charging coils are located in step S10 includes the steps of:
step S101, detecting m resistance values of m thermistors respectively;
step S102, inquiring m temperatures corresponding to the m resistance values, and respectively taking the m temperatures as the temperatures of the areas where the m parallel charging coils are located.
Specifically, 1 thermistor is respectively arranged in the mobile terminal for the area where m parallel charging coils are located. For example, a thermistor is disposed on the inner surface of the housing of the mobile terminal corresponding to the area where each charging coil is located. The thermistor has a characteristic in which a resistance value changes according to a temperature change, and a certain temperature value generally corresponds to a certain resistance value. Of course, in practical applications, a plurality of thermistors may be provided for 1 zone.
The charging coil that is being charged generates heat due to the transmission current, which causes the temperature of the area where the charging coil is located to increase. By polling the resistance of each thermistor, the corresponding temperature can be inquired, and the inquired temperature can be used as the temperature of the area where the charging coil is located.
Step S11, respectively acquiring a first type of charging coil corresponding to an area where the temperature of the m parallel charging coils exceeds the respective set threshold temperature, and a second type of charging coil corresponding to an area where the temperature of the m parallel charging coils does not exceed the respective set threshold temperature.
It should be noted that, because of different heat dissipation conditions of each area inside the mobile terminal, different threshold temperatures may be set correspondingly for different areas of the mobile terminal where each charging coil is located. For example, when a user holds a mobile terminal, a lower threshold temperature is set for an area touched by the palm of the hand, and a higher threshold temperature is set for an area touched by the finger of the hand. For another example, a lower threshold temperature is set for an area with a poor heat dissipation condition inside the mobile terminal.
After obtaining the temperature of the area where each charging coil is located, the temperature of each area may be compared with the threshold temperature set for each area, and it may be determined whether the temperature exceeds the threshold temperature of the area where the charging coil is located. When the temperature of one or more regions exceeds the respective set threshold temperature, the charging coil corresponding to the one or more regions can be determined as the first type of charging coil. When the temperature of one or more regions does not exceed the respective set threshold temperature, the charging coils corresponding to the one or more regions can be determined as the second type of charging coils.
In practical applications, the temperature of the region where each charging coil is located may be detected within a certain time after charging, or may be detected periodically.
And step S12, controlling the charging coil which is being charged in the first type of charging coil to stop charging, and controlling the charging coil which is not charged in the second type of charging coil to replace the charging coil which is stopped to be charged in the first type of charging coil to charge.
Specifically, after the first type of charging coil and the second type of charging coil are determined, the first type of charging coil can be controlled to stop charging. And moreover, a charging coil which is not charged currently in the second type of charging coil can be searched, and the charging coil is adopted to replace the first type of charging coil which stops charging for charging.
In practical application, mobile terminal is including the IC that charges, and the IC that charges establishes ties with m charging coil respectively, is provided with the switch on the series circuit of the IC that charges and m charging coil respectively.
Preferably, the step of controlling the charging coil being charged in the first type of charging coil to stop charging comprises:
and controlling each switch between each charging coil in the first type of charging coil and the charging IC to disconnect the charging IC.
The step of controlling the uncharged charging coil in the second type of charging coil to replace the charging coil which stops charging in the first type of charging coil to charge comprises the following steps:
and controlling the closing of each switch between the uncharged charging coil in the second type of charging coil and the charging IC so that the charging IC charges the mobile terminal.
In a specific implementation, a switch may be disposed on a connection circuit between the charging IC and the charging coil, and a switch controller that may control the switch to be turned on or off may be disposed in the mobile terminal. When the switch is closed, the charging coil and the charging IC can be conducted to execute the charging operation. When the switch is turned off, the charging coil and the charging IC can be disconnected to suspend the charging operation.
Preferably, the step of controlling the uncharged charging coil in the second type of charging coil to replace the charging coil which stops charging in the first type of charging coil in step S12 includes:
step a, detecting the number x of charging coils which stop charging in a first type of charging coils;
b, sequencing the temperatures of areas where uncharged charging coils in the second type of charging coils are located, and selecting x areas from low temperature to high temperature as areas to be controlled;
and c, controlling the conduction of a charging coil corresponding to the area to be controlled, and charging the mobile terminal.
In a specific implementation, after the charging coil which is being charged in the first type of charging coil is controlled to stop charging, the number x (x is a positive integer) of the charging coils which are stopped to be charged in the first type of charging coil can be detected. In addition, the temperatures of the areas where the uncharged charging coils in the second type of charging coils are located can be sorted from low to high, and x areas with lower temperatures are selected as the areas to be controlled. After the area to be controlled is determined, the charging coil corresponding to the area to be controlled can be controlled to be conducted, so that the mobile terminal is charged.
For example, the mobile terminal includes 9 charging coils, which are respectively distributed in different areas of the mobile terminal. The temperature T of the area where 9 charging coils are positioned1To T9Threshold temperatures T set respectively corresponding to the respective regions1max-T9maxAnd (6) carrying out comparison. And when the charging coil 5 which exceeds the threshold temperature and is being charged is detected currently, controlling the charging coil 5 to stop charging. Sequencing the rest charging coils which do not exceed the threshold temperature and are not charged currently according to the temperature of the area to obtain T9＜T8＜…＜T1And the temperature of the area where the charging coil 9 is located is the lowest, the charging coil 9 can be controlled to be switched on, and the charging coil 5 is replaced for charging.
It should be noted that, when the number of the region where the uncharged charging coils are located in the second type of charging coils is less than x, all uncharged charging coils in the second type of charging coils only need to be turned on, that is, the number of the charging coils turned on in the second type of charging coils is less than x.
In addition, the factor causing the temperature value increase of the area where the charging coil is located may be caused by heat transfer to the current area dissipated by the peripheral charging coils during charging, or by work and heat generation of some electronic component on the area where the charging coil is located, in addition to heat generation of the charging coils themselves during charging. Therefore, even if the charging coil is not currently conducted with the charging IC to perform the charging operation, the temperature value of the area where the charging coil is located may be high due to the above-described factors. Therefore, a charging coil which is not currently charged but is located in an area with a lower temperature value can be selected to replace the first type of charging coil for charging.
According to the embodiment of the invention, the plurality of charging coils are arranged in the mobile terminal, the first type of charging coil and the second type of charging coil are respectively determined according to the temperature of the area where the plurality of charging coils are located, and the uncharged second type of charging coil is controlled to replace the charging first type of charging coil, so that the charging efficiency is ensured, and the problems of high local area temperature, loss and even failure of other electronic components are avoided.
Moreover, according to the embodiment of the invention, the temperature of each area of the mobile terminal can be relatively balanced, the problem of serious local heating is avoided, and the user experience is improved.
In order to provide those skilled in the art with a thorough understanding of the above-described embodiments, reference will now be made to the specific examples shown in fig. 2-4.
Fig. 2 is a schematic distribution diagram of a plurality of charging coils in a mobile terminal according to a first embodiment of the present invention. As can be seen from the figure, 9 charging coils are uniformly distributed on different areas in the mobile terminal, and one charging IC is disposed on the area where the charging coil 1, the charging coil 2 and the charging coil 3 are located.
Fig. 3 is a schematic diagram of a control circuit of a plurality of charging coils according to an embodiment of the present invention. As can be seen from the figure, the charging coils 1 to m are respectively connected with the charging IC through circuits, and the connected circuits are respectively provided with a switch S1To Sm, the closing and opening of the switch is controlled by the controller. When the switch is closed, the charging coil is conducted with the charging IC to perform a charging operation. When the switch is turned off, the charging coil is disconnected from the charging IC, so as to suspend the charging operation. The n switches can be controlled to be closed to control the n charging coils to be charged. Thermistors 1 to m respectively associated with the m charging coils are also arranged in the mobile terminal.
Fig. 4 is a flowchart illustrating a wireless charging method according to an embodiment of the invention.As can be seen from the figure, the threshold temperature T of the area where m charging coils are located can be set first1maxTo Tmmax. Switch S for closing charging coil 1 to charging coil n1To SnThereby, the charging IC is turned on with the charging coils 1 to n, and the charging coils 1 to n perform a charging operation and transmit a current to the charging IC. The CPU of the mobile terminal can poll the resistance value R of the thermistors of the m charging coils1To RmAnd inquiring the temperature value T of the area where each charging coil is located1To Tm. Will T1To TmRespectively with T1maxTo TmmaxAnd (6) comparing.
When the temperature value of an area where a certain charging coil is located exceeds the threshold temperature set by the area, the charging coil can be determined as a first type of charging coil.
When the temperature value of an area where a certain charging coil is located does not exceed the threshold temperature set by the area, the charging coil can be determined as a second type of charging coil. And selecting x areas with the lowest temperature from the areas where the uncharged charging coils in the second type of charging coils are located according to the number x of the charging coils which stop charging in the first type of charging coils.
And controlling x charging coils which are being charged in the first type of charging coils to stop charging, and controlling the charging coils corresponding to the x regions with the lowest temperature to be switched on so as to replace the x charging coils which are stopped to be charged for charging.
Example two
Fig. 5 is a flowchart illustrating steps of a wireless charging method according to a second embodiment of the present invention, where the method is applied to a mobile terminal, where the mobile terminal includes at least 2 sets of charging coils connected in parallel, and the method specifically includes the following steps:
and step S20, respectively detecting the charging current and the temperature of the area when at least 2 groups of charging coils connected in parallel are charged.
In the concrete implementation, can control at least 2 parallelly connected charging coil groups (each charging coil group includes a plurality of parallelly connected charging coil groups) and charge, in the charging process, can detect the charging current of each charging coil group and the regional temperature in charging coil place according to predetermined time interval.
Preferably, at least 2 groups of charging coils connected in parallel are provided with a thermistor in the area where each charging coil is located, and step S20 includes the following steps:
d, detecting the charging current of each charging coil in at least 2 groups of charging coils connected in parallel and the temperature of the area where each charging coil is located;
step e, calculating the average charging current of each group of charging coils according to the charging current of each group of charging coils, and taking the average charging current as the charging current of each group of charging coils;
and f, calculating the average temperature of the area where each group of charging coils are located according to the temperature of the area where each group of charging coils are located, and taking the average temperature as the temperature of the area where each group of charging coils are located.
Specifically, the charging current of each charging coil in each group of charging coils is detected respectively, and the temperature of the area where each charging coil is located is detected.
And respectively calculating the average value of the charging current of each charging coil belonging to the same group of charging coils as the charging current of each group of charging coils.
And respectively calculating the average value of the temperatures of the charging coils belonging to the same group of charging coils as the temperature of the area where each group of charging coils is located.
For example, the mobile terminal includes charging coil 1 to charging coil 6, where charging coil 1 to charging coil 3 belong to charging coil group a, and charging coil 4 to charging coil 6 belong to charging coil group B. The temperature value of the area where each charging coil is located is T1To T6Calculating a temperature value T1To T3Average value of (A) T1-3Calculating a temperature value T4To T6Average value of (A) T4-6Will T1-3And T4-6Respectively as the temperature of the corresponding areas of the charging coil group A and the charging coil group B; charging current of each charging coil is I1To I6Calculating the current value I1To I3Average value of (1)1-3Calculating the current value I4To I6Average value of (1)4-6Will beI1-3And I4-6Respectively as charging currents corresponding to the charging coil group A and the charging coil group B.
It should be noted that when there is no charging coil, it does not calculate the average value of the set of charging currents. For example, in charging coil group A, I1When the current value is 0, the charging current of the charging coil group A is a current value I2And I3Average value of (a).
Step S21, adjusting the charging current of each charging coil of at least 2 groups of charging coils connected in parallel until the average temperature of the area where at least 2 groups of charging coils connected in parallel are located tends to be the same.
In specific implementation, the current of each group of charging coils can be adjusted according to the charging current of each group of charging coils and the temperature of the area where the charging coils are located. For example, the charging current of a certain set of charging coils with a higher temperature in the area is reduced, while the charging current of a certain set of charging coils with a lower temperature in the area is increased, so that the total charging current of the mobile terminal is kept unchanged.
In practical applications, one or more charging ICs may be further disposed in the mobile terminal, and each charging IC may be connected in series with a set of charging coils. The mobile terminal can be further internally provided with a controller, and the charging IC controller can control the maximum charging current of the charging IC, so that the charging current of each group of charging coils connected with the charging IC in series is controlled to be reduced or increased.
Preferably, as shown in fig. 6, the step S21 includes the steps of:
step S211, calculating the average charging current of each group of charging coils when at least 2 groups of charging coils connected in parallel are charged;
step S212, determining at least 2 charging coil groups with charging current larger than average charging current in parallel connection as a first type of charging coil group;
step S213, determining at least 2 charging coil groups with charging current smaller than the average charging current in the parallel charging coils as a second type of charging coil group;
step S214, the charging current of the first type of charging coil assembly is reduced, and the charging current of the second type of charging coil assembly is increased.
In a specific implementation, the average charging current of each group of charging coils is calculated according to the charging current of each group of charging coils. And determining the charging coils with the charging current larger than the average charging current of each group of charging coils as a first charging coil group, and determining the charging coils with the charging current smaller than the average charging current of each group of charging coils as a second charging coil group.
Because the charging current of the first type of charging coil group is large, the temperature of the area where the first type of charging coil group is located is relatively high, and the charging current of the second type of charging coil group is small, the temperature of the area where the second type of charging coil group is located is relatively low. Therefore, the charging current of the first type of charging coil group can be reduced, and the charging current of the second type of charging coil group can be increased, so that the average temperature of the area where the groups of charging coils are located tends to be the same. It should be noted that, in the embodiment of the present invention, the temperature tends to be the same, that is, the error from the average temperature of the area where each set of charging coils is located is within ± 2 degrees.
In practical application, an adjusting current with a small current value can be set to tentatively adjust the current of each charging coil, and when the temperature of each area still has a difference, a new round of current adjustment is performed until the temperature difference of each area is small or no difference exists. Through the dynamic current adjustment of multiple cycles, the temperature of each area tends to be the same.
In the embodiment of the invention, the charging current of each group of charging coils is adjusted according to the charging current of each group of charging coils and the temperature of the area where the charging coils are located, so that the temperature value of each area in the mobile terminal is relatively balanced, and the problem of local serious heating is avoided, thereby ensuring the charging efficiency and avoiding the problems of loss and even failure of other electronic components caused by overhigh temperature of the local area of the mobile terminal.
In order to provide those skilled in the art with a thorough understanding of the above-described embodiments, reference will now be made to the specific examples shown in fig. 7 to 9.
Fig. 7 is a schematic diagram illustrating a distribution of a plurality of charging coils in a mobile terminal according to a second embodiment of the present invention. The mobile terminal comprises a mobile terminal body, wherein a charging area 1 and a charging area 2 are distributed on the upper portion and the lower portion of the mobile terminal body respectively, a charging IC1 and a group of charging coils are distributed in the charging area 1, the group of charging coils comprises a charging coil 1 to a charging coil 3, a charging IC2 and another group of charging coils are distributed in the charging area 2, and the group of charging coils comprises a charging coil 4 to a charging coil 6.
Fig. 8 is a schematic control circuit diagram of a plurality of charging coils according to a second embodiment of the present invention. Charging coil 1 to charging coil 3 are connected with charging IC1 respectively, and charging coil 4 to charging coil 6 are connected with charging IC2 respectively, and each charging coil switches on with charging IC in order to carry out the operation of charging. Thermistors 1 to 6 respectively associated with the respective charging coils are also provided in the mobile terminal. The charging ICs 1, 2 configure their maximum charging current through the controller to limit the current to each set of charging coils.
Fig. 9 is a flowchart illustrating a wireless charging method according to a second embodiment of the present invention. First, the current I of the charging IC1 and the charging IC2 is set1And I2Since the charging coils 1 to 3 are connected to the charging IC1, respectively, the current of the charging coils 1 to 3 flows into the charging IC 1; since the charging coils 4 to 6 are connected in series with the charging IC2, respectively, the current of the charging coils 4 to 6 flows into the charging IC 2.
The processor of the mobile terminal polls the resistance value R of the thermistor of each charging coil1To R6And obtaining corresponding temperature value T according to the resistance value query1To T6。
Temperature value T for the region in which charging coil 1 to charging coil 3 are located within charging region 11To T3Calculating T1To T3Is obtained as the temperature T of the charging area 11-3. Temperature value T for the region in which charging coil 4 to charging coil 6 are located within charging region 24To T6Calculating T4To T6Is obtained as the temperature T of the charging area 24-6。
When T is1-3＞T4-6And, the average charging current of charging coil 1 to charging coil 3 is greater than the average charging current of charging coil 4 to charging coil 6, can tentatively reduce the maximum charging current of IC1 that charges through the controller this moment to and, improve the maximum charging current of IC2 that charges, thereby reduce the charging current of charging coil 1 to charging coil 3, and improve the charging current of charging coil 4 to charging coil 6. After the current regulation, the temperature value T can be detected again1To T6，T1-3And T4-6In the difference, the maximum passing current of the charging IC1 is again decreased, and the maximum passing current of the charging IC2 is increased until T1-3And T4-6Tend to be the same between them.
EXAMPLE III
Fig. 10 is a block diagram of a mobile terminal according to an embodiment of the present invention, where the mobile terminal 300 shown in fig. 10 includes m charging coils connected in parallel, a region where each charging coil is located is respectively provided with a threshold temperature, and the mobile terminal 300 may specifically include the following modules:
the first control module 301 is configured to control n charging coils of the m charging coils connected in parallel to perform charging;
the first detection module 302 is configured to detect temperatures of areas where m charging coils connected in parallel are located, where 0< n < m;
the obtaining module 303 is configured to obtain a first type of charging coil corresponding to an area where the m parallel charging coils are located and the temperature of the area exceeds a respective set threshold temperature, and obtain a second type of charging coil corresponding to an area where the m parallel charging coils are located and the temperature of the area does not exceed the respective set threshold temperature;
the first control module 301 is further configured to control a charging coil, which is being charged, in the first type of charging coil to stop charging, and control a charging coil, which is not being charged, in the second type of charging coil to replace the charging coil, which is being stopped to charge, in the first type of charging coil to charge.
As a preferred embodiment of the present invention, 1 thermistor is respectively disposed in an area where m charging coils connected in parallel are located, and the first detection module 302 includes: the resistance detection submodule and the temperature query submodule.
The resistance detection submodule is used for respectively detecting m resistance values of the m thermistors;
and the temperature query submodule is used for querying m temperatures corresponding to the m resistance values and respectively taking the m temperatures as the temperatures of the areas where the m parallel charging coils are located.
Preferably, the first control module 301 is specifically configured to:
detecting the number x of charging coils which stop charging in the first type of charging coils;
sorting the temperatures of areas where uncharged charging coils in the second type of charging coils are located in a high-low mode, and selecting x areas from low temperatures to high temperatures as areas to be controlled;
and controlling the conduction of a charging coil corresponding to the area to be controlled, and charging the mobile terminal.
It should be noted that, the mobile terminal 300 provided in the embodiment of the present invention is capable of implementing each step of the wireless charging method in the first embodiment, and the working principle and the mode thereof are all correspondingly applicable, and are not described herein again.
In the embodiment of the present invention, a plurality of charging coils are arranged in the mobile terminal 300, and according to the temperature of the area where the plurality of charging coils are located, the first type of charging coil and the second type of charging coil are respectively determined, and the uncharged second type of charging coil is controlled to replace the charging first type of charging coil, so that the charging efficiency is ensured, and meanwhile, the problems of excessive temperature in a local area, and loss and even failure of other electronic components are avoided. Moreover, according to the embodiment of the invention, the temperature of each area of the mobile terminal 300 can be relatively balanced, the problem of serious local heating is avoided, and the user experience is improved.
Example four
Fig. 11 is a block diagram of a mobile terminal according to a fourth embodiment of the present invention, where the mobile terminal 400 shown in fig. 11 includes at least 2 sets of charging coils connected in parallel, and the mobile terminal temperature detection module 301 may specifically include the following modules:
the second detection module 401 is configured to detect charging currents of at least 2 groups of charging coils connected in parallel during charging and a temperature of an area where the charging coils are located;
the second control module 402 is configured to adjust charging currents of at least 2 groups of charging coils connected in parallel until average temperatures of areas where the at least 2 groups of charging coils connected in parallel are about the same.
As a preferred embodiment of the present invention, at least 2 groups of charging coils connected in parallel are provided with a thermistor in an area where each charging coil is located, and the second detection module is specifically configured to:
detecting the charging current of each charging coil in at least 2 groups of charging coils connected in parallel and the temperature of an area where each charging coil is located;
calculating the average charging current of each group of charging coils according to the charging current of each group of charging coils, and taking the average charging current as the charging current of each group of charging coils;
and calculating the average temperature of the region of each group of charging coils according to the temperature of the region of each group of charging coils, wherein the average temperature is used as the temperature of the region of each group of charging coils.
As a preferred embodiment of the present invention, the second control module 402 is specifically configured to:
calculating the average charging current of each group of charging coils when at least 2 groups of charging coils connected in parallel are charged;
determining at least 2 charging coil groups with charging current larger than the average charging current in the parallel charging coils as a first type of charging coil group;
determining at least 2 charging coil groups with charging current smaller than the average charging current in the parallel-connected charging coils as a second type of charging coil group;
the charging current of the first type of charging coil group is reduced, and the charging current of the second type of charging coil group is improved.
It should be noted that, the mobile terminal 400 provided in the embodiment of the present invention can implement each step of the wireless charging method in the second embodiment, and the working principle and the mode thereof are all correspondingly applicable, and are not described herein again.
In the embodiment of the invention, the charging current of each group of charging coils is adjusted according to the charging current of each group of charging coils and the temperature of the area where the charging coils are located, so that the temperature of each area in the mobile terminal is relatively balanced, and the problems of high temperature of the local area of the mobile terminal, loss and even failure of other electronic components are avoided while the charging efficiency is ensured. Moreover, according to the embodiment of the invention, the temperature of each area of the mobile terminal can be relatively balanced, the problem of serious local heating is avoided, and the user experience is improved.
Fig. 12 is a block diagram of a mobile terminal according to another embodiment of the present invention. The mobile terminal 500 shown in fig. 12 includes: at least one processor 501, memory 502, at least one network interface 504, and other user interfaces 503. The various components in the mobile terminal 500 are coupled together by a bus system 505. It is understood that the bus system 505 is used to enable connection communications between these components. The bus system 505 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled as bus system 505 in FIG. 5.
The user interface 503 may include, among other things, a display, a keyboard, or a pointing device (e.g., a mouse, trackball, touch pad, or touch screen, among others.
It is to be understood that the memory 502 in embodiments of the present invention may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile memory may be a Read-only memory (ROM), a programmable Read-only memory (PROM), an erasable programmable Read-only memory (erasabprom, EPROM), an electrically erasable programmable Read-only memory (EEPROM), or a flash memory. The volatile memory may be a Random Access Memory (RAM) which functions as an external cache. By way of example, but not limitation, many forms of RAM are available, such as static random access memory (staticiram, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (syncronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM ), Enhanced Synchronous DRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), and direct memory bus RAM (DRRAM). The memory 502 of the subject systems and methods described in connection with the embodiments of the invention is intended to comprise, without being limited to, these and any other suitable types of memory.
In some embodiments, memory 502 stores elements, executable modules or data structures, or a subset thereof, or an expanded set thereof as follows: an operating system 5021 and application programs 5022.
The operating system 5021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, and is used for implementing various basic services and processing hardware-based tasks. The application 5022 includes various applications, such as a media player (MediaPlayer), a Browser (Browser), and the like, for implementing various application services. The program for implementing the method according to the embodiment of the present invention may be included in the application program 5022.
In the embodiment of the present invention, the mobile terminal 500 includes m charging coils connected in parallel, an area where each charging coil is located is provided with a threshold temperature, and the processor 501 is configured to control n charging coils of the m charging coils connected in parallel to charge and detect the temperature of the area where the m charging coils connected in parallel are located, where 0< n < m, by calling a program or an instruction stored in the memory 502, specifically, the program or the instruction stored in the application 5022; respectively acquiring a first type of charging coil corresponding to an area where the temperature of the area where the m parallel charging coils are located exceeds the respective set threshold temperature, and a second type of charging coil corresponding to an area where the temperature of the area where the m parallel charging coils are located does not exceed the respective set threshold temperature; and controlling the charging coil which is being charged in the first type of charging coil to stop charging, and controlling the uncharged charging coil in the second type of charging coil to replace the charging coil which stops charging in the first type of charging coil to charge.
The method disclosed by the above-mentioned embodiments of the present invention may be applied to the processor 501, or implemented by the processor 501. The processor 501 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 501. The processor 501 may be a general-purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, or discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 502, and the processor 501 reads the information in the memory 502 and completes the steps of the method in combination with the hardware.
It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or any combination thereof. For a hardware implementation, the processing units may be implemented in one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, micro-controllers, microprocessors, other electronic units configured to perform the functions of the present application, or a combination thereof.
For a software implementation, the techniques of an embodiment of the invention may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions of the embodiments of the invention. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.
Preferably, 1 thermistor is respectively disposed in an area where the m parallel charging coils are located, and the processor 501 is further configured to: respectively detecting m resistance values of the m thermistors; and inquiring m temperatures corresponding to the m resistance values, and respectively taking the m temperatures as the temperatures of the areas where the m parallel charging coils are located.
Preferably, the processor 501 is further configured to: detecting the number x of charging coils which stop charging in the first type of charging coils; sorting the temperatures of areas where uncharged charging coils in the second type of charging coils are located in a high-low mode, and selecting x areas from low temperatures to high temperatures as areas to be controlled; and controlling the conduction of a charging coil corresponding to the area to be controlled, and charging the mobile terminal.
It should be noted that, the mobile terminal 500 provided in the embodiment of the present invention is capable of implementing each process step of the wireless charging method in the first embodiment and the second embodiment, and the working principle and the mode thereof are correspondingly applicable, and are not described herein again.
In the embodiment of the present invention, a plurality of charging coils are arranged in the mobile terminal 500, and according to the temperature of the area where the plurality of charging coils are located, the first type of charging coil and the second type of charging coil are respectively determined, and the uncharged second type of charging coil is controlled to replace the charging first type of charging coil, so that the charging efficiency is ensured, and meanwhile, the problems of excessive temperature in a local area, and loss and even failure of other electronic components are avoided. Moreover, according to the embodiment of the invention, the temperature of each area of the mobile terminal 500 can be relatively balanced, the problem of serious local heating is avoided, and the user experience is improved.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units 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 (which may be a personal computer, a server, or a network 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: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. The wireless charging method is applied to a mobile terminal, and is characterized in that the mobile terminal comprises m charging coils and a charging IC which are connected in parallel, the charging IC is respectively connected with the m charging coils in series, a switch is respectively arranged on the charging IC and a series circuit of the m charging coils, and a threshold temperature is respectively arranged in an area where each charging coil is located, and the method comprises the following steps:
controlling n charging coils of the m parallel charging coils to charge, and respectively detecting the temperature of the area where the m parallel charging coils are located, wherein n is more than 0 and less than m;
respectively acquiring a first type of charging coil corresponding to an area where the temperature of the area where the m parallel charging coils are located exceeds the respective set threshold temperature, and a second type of charging coil corresponding to an area where the temperature of the area where the m parallel charging coils are located does not exceed the respective set threshold temperature;
controlling a charging coil which is being charged in the first type of charging coil to stop charging, and controlling an uncharged charging coil in the second type of charging coil to replace the charging coil which is stopped to be charged in the first type of charging coil to charge;
the step of controlling the charging coil which is being charged in the first type of charging coil to stop charging comprises the following steps:
controlling each switch between each charging coil in the first type of charging coil and the charging IC to disconnect the charging IC;
the step of controlling the uncharged charging coil in the second type of charging coil to replace the charging coil which stops charging in the first type of charging coil to charge comprises the following steps:
controlling the closing of each switch between the uncharged charging coil in the second type of charging coil and the charging IC;
the step of controlling the uncharged charging coil in the second type of charging coil to replace the charging coil which stops charging in the first type of charging coil to charge comprises the following steps:
detecting the number x of charging coils which stop charging in the first type of charging coils;
sorting the temperatures of areas where uncharged charging coils in the second type of charging coils are located in a high-low mode, and selecting x areas from low temperatures to high temperatures as areas to be controlled;
and controlling the charging coil corresponding to the area to be controlled to be conducted, and charging the mobile terminal.
2. The method according to claim 1, wherein the m parallel charging coils are respectively provided with 1 thermistor in their areas, and the step of respectively detecting the temperatures of the m parallel charging coils comprises:
respectively detecting m resistance values of the m thermistors;
and inquiring m temperatures corresponding to the m resistance values, and respectively taking the m temperatures as the temperatures of the areas where the m parallel charging coils are located.
3. A wireless charging method is applied to a mobile terminal and is characterized in that the mobile terminal comprises at least 2 groups of charging coils which are connected in parallel, wherein each group of charging coils comprises a plurality of charging coils which are connected in parallel; the method comprises the following steps:
respectively detecting the charging current and the temperature of the area of the at least 2 groups of charging coils which are connected in parallel during charging;
adjusting the charging current of each group of charging coils in the at least 2 groups of charging coils connected in parallel until the average temperature of the area where the at least 2 groups of charging coils connected in parallel are located tends to be the same;
the area of each charging coil in at least 2 groups of charging coils connected in parallel is provided with a thermistor respectively, the step of detecting the charging current and the temperature of at least 2 groups of charging coils connected in parallel when charging respectively comprises:
detecting the charging current of each charging coil in the at least 2 groups of charging coils connected in parallel and the temperature of the area where each charging coil is located;
calculating the average charging current of each group of charging coils according to the charging current of each group of charging coils, wherein the average charging current is used as the charging current of each group of charging coils;
calculating the average temperature of the region of each group of charging coils according to the temperature of the region of each group of charging coils, wherein the average temperature is used as the temperature of the region of each group of charging coils;
the step of adjusting the charging current of each charging coil of the at least 2 groups of charging coils connected in parallel comprises:
calculating the average charging current of each group of charging coils when the at least 2 groups of charging coils connected in parallel are charged;
determining a charging coil group with a charging current larger than the average charging current in the at least 2 groups of charging coils connected in parallel as a first charging coil group;
determining a charging coil group with a charging current smaller than the average charging current in the at least 2 groups of charging coils connected in parallel as a second type of charging coil group;
and reducing the charging current of the first type of charging coil group and improving the charging current of the second type of charging coil group.
4. The utility model provides a mobile terminal, its characterized in that, mobile terminal includes m parallelly connected charging coil and the IC that charges, the IC that charges establishes ties with m charging coil respectively, the IC that charges with be provided with the switch on the series circuit of m charging coil respectively, every the region at charging coil place is equipped with threshold temperature respectively, mobile terminal includes:
the first control module is used for controlling n charging coils in the m parallel charging coils to charge;
the first detection module is used for respectively detecting the temperature of the area where the m parallel charging coils are located, wherein 0< n < m;
the acquiring module is used for respectively acquiring a first type of charging coil corresponding to an area where the temperature of the area where the m parallel charging coils are located exceeds the respective set threshold temperature, and a second type of charging coil corresponding to an area where the temperature of the area where the m parallel charging coils are located does not exceed the respective set threshold temperature;
the first control module is further used for controlling a charging coil which is being charged in the first type of charging coil to stop charging, and controlling an uncharged charging coil in the second type of charging coil to replace the charging coil which is stopped to be charged in the first type of charging coil to charge;
controlling the charging coil being charged in the first type of charging coil to stop charging comprises:
controlling each switch between each charging coil in the first type of charging coil and the charging IC to disconnect the charging IC;
the charging coil that control in the second type charging coil that does not charge replaces among the first type charging coil and stops to charge includes:
controlling the closing of each switch between the uncharged charging coil in the second type of charging coil and the charging IC;
the first control module is specifically configured to:
detecting the number x of charging coils which stop charging in the first type of charging coils;
sorting the temperatures of areas where uncharged charging coils in the second type of charging coils are located in a high-low mode, and selecting x areas from low temperatures to high temperatures as areas to be controlled;
and controlling the charging coil corresponding to the area to be controlled to be conducted, and charging the mobile terminal.
5. The mobile terminal according to claim 4, wherein 1 thermistor is respectively disposed in an area where the m parallel charging coils are located, and the first detection module comprises:
the resistance detection submodule is used for respectively detecting m resistance values of the m thermistors;
and the temperature query submodule is used for querying m temperatures corresponding to the m resistance values and respectively taking the m temperatures as the temperatures of the areas where the m parallel charging coils are located.
6. A mobile terminal, characterized in that the mobile terminal comprises at least 2 groups of charging coils connected in parallel, wherein each group of charging coils comprises a plurality of charging coils connected in parallel; the mobile terminal includes:
the second detection module is used for respectively detecting the charging current of the at least 2 groups of charging coils connected in parallel during charging and the temperature of the area where the charging coils are located;
the second control module is used for adjusting the charging current of each group of charging coils in the at least 2 groups of charging coils connected in parallel until the average temperature of the area where the at least 2 groups of charging coils connected in parallel are located tends to be the same;
the area of each charging coil in at least 2 parallelly connected charging coils is provided with thermistor respectively, the second detection module specifically is used for:
detecting the charging current of each charging coil in the at least 2 groups of charging coils connected in parallel and the temperature of the area where each charging coil is located;
calculating the average charging current of each group of charging coils according to the charging current of each group of charging coils, wherein the average charging current is used as the charging current of each group of charging coils;
calculating the average temperature of the region of each group of charging coils according to the temperature of the region of each group of charging coils, wherein the average temperature is used as the temperature of the region of each group of charging coils;
the second control module is specifically configured to:
calculating the average charging current of each group of charging coils when the at least 2 groups of charging coils connected in parallel are charged;
determining a charging coil group with a charging current larger than the average charging current in the at least 2 groups of charging coils connected in parallel as a first charging coil group;
determining a charging coil group with a charging current smaller than the average charging current in the at least 2 groups of charging coils connected in parallel as a second type of charging coil group;
and reducing the charging current of the first type of charging coil group and improving the charging current of the second type of charging coil group.
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| CN112039220B (en) * | 2020-08-24 | 2022-02-25 | 维沃移动通信有限公司 | Electronic equipment assembly, control method thereof and control device of electronic equipment |
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| CN105576781A (en) * | 2015-07-28 | 2016-05-11 | 宇龙计算机通信科技(深圳)有限公司 | Charging control method, terminal, charging base and charging system |
| CN106911190A (en) * | 2017-03-28 | 2017-06-30 | 联想(北京)有限公司 | Wireless charging device, wireless charging temperature control method and robot |
| CN107005143A (en) * | 2014-11-26 | 2017-08-01 | 三菱电机株式会社 | For the Apparatus and method for for the operation of power module for controlling to be made up of switch |
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| KR20140060798A (en) * | 2012-11-12 | 2014-05-21 | 삼성전기주식회사 | Cordless charging apparatus and manufacturing method thereof |
| CN104143861A (en) * | 2013-05-09 | 2014-11-12 | 泰科电子(上海)有限公司 | Non-contact type power supply circuit |
| CN106685098A (en) * | 2016-12-06 | 2017-05-17 | 青岛众海汇智能源科技有限责任公司 | Wireless charging system for sweeper |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107005143A (en) * | 2014-11-26 | 2017-08-01 | 三菱电机株式会社 | For the Apparatus and method for for the operation of power module for controlling to be made up of switch |
| CN105576781A (en) * | 2015-07-28 | 2016-05-11 | 宇龙计算机通信科技(深圳)有限公司 | Charging control method, terminal, charging base and charging system |
| CN106911190A (en) * | 2017-03-28 | 2017-06-30 | 联想(北京)有限公司 | Wireless charging device, wireless charging temperature control method and robot |
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