CN102738530A - Wireless charging method of mobile terminal and wireless charging device - Google Patents
Wireless charging method of mobile terminal and wireless charging device Download PDFInfo
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- CN102738530A CN102738530A CN2012102265493A CN201210226549A CN102738530A CN 102738530 A CN102738530 A CN 102738530A CN 2012102265493 A CN2012102265493 A CN 2012102265493A CN 201210226549 A CN201210226549 A CN 201210226549A CN 102738530 A CN102738530 A CN 102738530A
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E60/10—Energy storage using batteries
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Abstract
The invention relates to a wireless charging method of a mobile terminal and a wireless charging device. The method comprises the following steps of sending a detection signal to a charging interface of the wireless charging device; judging whether a resonance response signal corresponding to the detection signal is received or not, if so, sending a charging signal to the charging interface; judging whether a charging response signal corresponding to the charging signal is received or not, if so, carrying out wireless charging to the corresponding mobile terminal; and if not, sending a pre-charging signal to the charging interface. The invention also relates to the wireless charging device. According to the wireless charging method and the wireless charging device, through a pre-charging set, an over-discharging mobile terminal can also be charged through the wireless charging device.
Description
Technical field
The present invention relates to the field of power management of portable terminal, more particularly, relate under a kind of situation of the battery over-discharge at portable terminal, wireless charging method and wireless charging device that portable terminal is charged.
Background technology
The charging process of the battery of general portable terminal all receives the control of the power management module of portable terminal, accomplishes charging process through stages such as constant current charge, constant voltage charges respectively.But portable terminal is excessively using or is using for a long time under the situation of (portable terminal at non-working condition time can work under the pattern of a low energy consumption), and the cell voltage of portable terminal can drop to below the start voltage, and at this moment power management module can't start.When the battery that uses wired charger to overdischarge charges; The overdischarge charging circuit that needs an independent hardware logic electric circuit to form carries out precharge to this battery; Make cell voltage be elevated to greater than after the start voltage; Power management module just can start, and follow-up charging process is controlled through power management module.
And under the situation that the employing wireless charger charges; In the process that wireless charger and portable terminal were shaken hands before charging; If cell voltage is lower than start voltage, power management module can not be opened, and portable terminal can't be responded to wireless charger like this.Specifically, by existing wireless charging agreement, when portable terminal is placed on when charging on the wireless charger; Wireless charger can send an electromagnetic field signal; Wait the response of standby communication terminal then, but because the overdischarge of battery of mobile terminal, portable terminal can't send it back induction signal to wireless charger; At this moment wireless charger can think that what charge is not portable terminal; Just can not dispose corresponding transmission power, can not launch the wireless charging signal yet and charge, thereby cause the portable terminal of overdischarge to charge through wireless charger for this portable terminal.
Die, be necessary to provide a kind of wireless charging method and wireless charging device of portable terminal, to solve the existing in prior technology problem.
Summary of the invention
The technical problem that the present invention will solve is; The defective that can't charge through wireless charger to the portable terminal of existing overdischarge; Provide a kind of can be under the situation of the battery over-discharge of portable terminal, wireless charging method and wireless charging device that portable terminal is charged.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of wireless charging method of portable terminal, comprising step:
Send the charging inlet of detection signal to wireless charging device, judge whether to receive and the corresponding resonance response signal of said detection signal, if then send charging signals to said charging inlet;
Judge whether to receive and the said charging signals back-signalling that charges accordingly, if then wireless charging is carried out at the corresponding mobile terminal, otherwise send precharging signal to said charging inlet.
In the wireless charging method of portable terminal of the present invention; Said step " is sent the charging inlet of detection signal to wireless charging device; judge whether to receive and the corresponding resonance response signal of said detection signal, if then send charging signals to said charging inlet " and being comprised:
Every at a distance from one first setting-up time; Send the charging inlet of detection signal to wireless charging device; As receive and the corresponding resonance response signal of said detection signal, then send charging signals to charging inlet, otherwise continue to send the charging inlet of said detection signal to said wireless charging device.
In the wireless charging method of portable terminal of the present invention; Said step " judges whether to receive and the said charging signals back-signalling that charges accordingly; if then wireless charging is carried out at the corresponding mobile terminal, otherwise send precharging signal to said charging inlet " and comprising:
In second setting-up time, judge whether to receive and the said charging signals back-signalling that charges accordingly, if then wireless charging is carried out at the corresponding mobile terminal, otherwise send precharging signal to said charging inlet; Said charging back-signalling comprises the charge power information of said portable terminal.
In the wireless charging method of portable terminal of the present invention, said step " is sent precharging signal to said charging inlet " and is comprised step before:
One count value is set, less than said set point, sends precharging signal to said charging inlet like said count value, count value adds one simultaneously; Equal said set point like said count value, the then said count value of initialization, and continuation is sent the extremely charging inlet of said wireless charging device of said detection signal.
In the wireless charging method of portable terminal of the present invention, said precharging signal is a plurality of charging signals of or space, the current strength of said precharging signal be normal charging current current strength 10% to 50%.
In the wireless charging method of portable terminal of the present invention, the wireless charging method of said portable terminal also comprises step:
Receive the power adjustment signal of said portable terminal, according to said power adjustment signal, adjustment is to the power of said portable terminal wireless charging.
In the wireless charging method of portable terminal of the present invention, the wireless charging method of said portable terminal also comprises step:
Receive the charging completion signal of said portable terminal, stop simultaneously said portable terminal is carried out wireless charging.
The invention still further relates to a kind of wireless charging device, comprising: charging inlet is used to place portable terminal to be charged; Detection module is used to send detection signal to said charging inlet; Judge module is used for basis and the corresponding resonance response signal of said detection signal, sends charging signals to said charging inlet; Charging module is used for basis and the said charging signals back-signalling that charges accordingly, and said portable terminal is carried out wireless charging; Pre-charge module is used for receiving said resonance response signal when said judge module, when said charging module does not receive said charging back-signalling, sends precharging signal to said charging inlet; And counting module: be used to control said pre-charge module and send said precharging signal.
In wireless charging device of the present invention, said precharging signal is a plurality of charging signals of or space, the current strength of said precharging signal be normal charging current current strength 10% to 50%.
In wireless charging device of the present invention, said wireless charging device also comprises:
Power regulation module is used for the power adjustment signal according to said portable terminal, and adjustment is to the power of said portable terminal wireless charging; And
Module is accomplished in charging, is used for the charging completion signal according to said portable terminal, stops said portable terminal is carried out wireless charging;
Said charging back-signalling comprises the charge power information of said portable terminal.
The wireless charging method and the wireless charging device of the portable terminal of embodiment of the present invention; Has following beneficial effect: also can charge through the precharge portable terminal of overdischarge that is arranged so that, avoid existing wireless charging device can't carry out the technical problem of wireless charging to the portable terminal of overdischarge through wireless charging device.
Simultaneously the wireless charging method of portable terminal of the present invention and the wireless charging device charging signals that adopts short time, little electric current both can be realized effective charging to the battery precharge that circulates, and can avoid again battery is produced infringement.Realize intelligent charge, outage according to charging back-signalling, power adjustment signal and the charging completion signal of portable terminal simultaneously, prevent to overcharge the damage battery portable terminal.
Description of drawings
To combine accompanying drawing and embodiment that the present invention is described further below, in the accompanying drawing:
Fig. 1 is the flow chart of preferred embodiment of the wireless charging method of portable terminal of the present invention;
Fig. 2 is the practical implementation flow chart of preferred embodiment of the wireless charging method of portable terminal of the present invention;
Fig. 3 is the practical implementation flow chart of wireless charging device side of preferred embodiment of the wireless charging method of portable terminal of the present invention;
Fig. 4 be portable terminal of the present invention the wireless charging method preferred embodiment mobile terminal side the practical implementation flow chart;
Fig. 5 is the structural representation of the preferred embodiment of wireless charging device of the present invention.
Wherein, description of reference numerals is following:
30, portable terminal;
31, charging inlet;
32, detection module;
33, judge module;
34, charging module;
35, pre-charge module;
36, counting module;
37, power regulation module;
38, module is accomplished in charging.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Please see figures.1.and.2, Fig. 1 is the flow chart of preferred embodiment of the wireless charging method of portable terminal of the present invention, and Fig. 2 is the practical implementation flow chart of preferred embodiment of the wireless charging method of portable terminal of the present invention.The wireless charging method of this portable terminal comprises:
Step 101, the charging inlet of transmission detection signal to wireless charging device judges whether to receive and the corresponding resonance response signal of said detection signal, if then send charging signals to said charging inlet;
Step 102 judges whether to receive and the said charging signals back-signalling that charges accordingly, if then wireless charging is carried out at the corresponding mobile terminal, otherwise send precharging signal to said charging inlet.
Specifically, the wireless charging method of this portable terminal comprises:
Step 201, the count initialized value forwards step 202 to;
Step 202 through one first setting-up time, is sent the charging inlet of detection signal to wireless charging device, judges whether to receive and the corresponding resonance response signal of this detection signal, then forwards step 203 in this way to, as otherwise repeated execution of steps 202;
Step 203, transmission charging signals are to charging inlet;
Step 204, in second setting-up time, judge whether to receive and this charging signals back-signalling that charges accordingly, then forward step 205 in this way to, as otherwise forward step 206 to;
Step 205, according to the charging back-signalling, portable terminal is carried out wireless charging;
Step 206, whether judge count value, then forward step 207 in this way to less than set point, as otherwise forward step 201 to;
Step 207, transmission precharging signal are to charging inlet, and count value adds one, forwards step 203 to.
Specify the flow process of the wireless charging method of portable terminal of the present invention below in conjunction with Fig. 3 and Fig. 4; Wherein Fig. 3 is the practical implementation flow chart of wireless charging device side of preferred embodiment of the wireless charging method of portable terminal of the present invention, Fig. 4 be portable terminal of the present invention the wireless charging method preferred embodiment mobile terminal side the practical implementation flow chart.
In step 201; The count value zero clearing (initialization) of wireless charging device; This count value is to sending charging signals; And the number of times (promptly to the precharge number of times of same portable terminal) that does not receive corresponding charging back-signalling is added up, and wireless charging device gets into detected state, forwards step 202 to.
In step 202; Wireless charging device is when detected state; (i.e. first setting-up time) is through coil emission one section pulse electromagnetic wave (being detection signal) at set intervals; When connecting the charging inlet of going up wireless charging device if any portable terminal, the coil on the portable terminal can be evoked resonance by this detection signal, detects electric current (promptly with the corresponding resonance response signal of above-mentioned detection signal) thereby on the charge coil of wireless charging device, produce; At this moment wireless charging device is just judged has the portable terminal that need carry out wireless charging to be connected with charging inlet; Forward step 203 to, as not detecting resonance response signal, then repeated execution of steps 202 detects portable terminal to be charged.First setting-up time in this step can be provided with arbitrarily as required.
In step 203, wireless charging device sends charging signals to the portable terminal on the charging inlet, and etc. the response of standby communication terminal, forward step 204 to.
In step 204; In second setting-up time; Judge whether to receive and the above-mentioned charging signals back-signalling that charges accordingly, as receive and then forward step 205 to, all do not receive the charging back-signalling as surpassing second setting-up time; Judge that then the portable terminal that is connected with charging inlet is in over-discharge state, forward step 206 to and carry out precharge.Second setting-up time in this step can be provided with arbitrarily as required.
In step 205,, portable terminal is carried out wireless charging according to the charging back-signalling.This charging back-signalling comprises signal strength information, the sign of portable terminal and the charge power information of portable terminal that portable terminal receives.Wireless charging device carries out wireless charging according to the charge power information configuration charging transmitting power of portable terminal to portable terminal.In the wireless charging process, portable terminal can regularly send charging adjustment signal to wireless charging device, and wireless charging device is according to this adjustment signal adjustment charging transmitting power of charging, to realize using best charge mode to charge.When the battery charge of portable terminal finishes; Portable terminal can send charging completion signal to wireless charging device; At this moment wireless charging device stops portable terminal being charged; And entering detected state (as at this moment detecting the portable terminal that has been full of electricity again, the charging completion signal that sends according to portable terminal will can not charge again).
In step 206; As judge that the portable terminal on the charging inlet is in over-discharge state; At this moment wireless charging device is added up count value; Less than five times (this set point can be adjusted as required accordingly), then the portable terminal on the charging inlet is carried out precharge like count value, forward step 207 to; Equal five times like count value, judge that then this portable terminal can't charge, and forwards step 201 to.Like the battery of portable terminal existing problems itself, can't charge, can cause wireless charging device that portable terminal is carried out precharge repeatedly, the count value here carries out precharge number of times to portable terminal and controls, and avoided the waste of energy in the precharge repeatedly.
In step 207,, make portable terminal can not send the charging back-signalling to wireless charging device because portable terminal is in over-discharge state; So wireless charging signal of a plurality of little electric current (being generally the 10%-50% of normal charging current) of one of wireless charging device use or space; Battery to portable terminal activates and precharge, for example uses 10% of normal charging current size, charges 30 seconds; Stop to charge 10 seconds, repeat a plurality of circulations.Can well avoid the infringement of the charging of long-time, big electric current like this to the battery generation.The normal charging current here is the specified charging current to portable terminal, also can set described in 205 set by step.
As making portable terminal reach start voltage through above-mentioned pre-charge process, then portable terminal can generate corresponding charging back-signalling to follow-up charging signals, thereby gets into normal charged state (of step 205).After having sent precharging signal, count value adds one, forwards step 203 to.
Here owing to the portable terminal that can't charge possibly also be positioned on the charging inlet; Therefore can set long stopping detection time or wait for that the user carries out reset operation; To avoid wireless charging device to enter into pre-charge state by detected state repeatedly, cause the waste of energy.
The invention still further relates to a kind of wireless charging device, as shown in Figure 4, Fig. 4 is the structural representation of the preferred embodiment of wireless charging device of the present invention.This wireless charging device comprises charging inlet 31, detection module 32, judge module 33, charging module 34, pre-charge module 35, counting module 36, power regulation module 37 and charging completion module 38.Charging inlet 31 is used to place portable terminal to be charged 30; Detection module 32 is used to send detection signal to charging inlet 31; Judge module 33 is used for basis and the corresponding resonance response signal of detection signal, sends charging signals to charging inlet 31; Charging module 34 is used for basis and the charging signals back-signalling that charges accordingly, and portable terminal 30 is carried out wireless charging; Pre-charge module 35 is used for receiving resonance response signal when judge module 33, when charging module 34 does not receive the charging back-signalling, sends precharging signal to charging inlet 31; Counting module 36 is used to control pre-charge module 35 and sends precharging signal; Power regulation module 37 is used for the power adjustment signal according to portable terminal 30, and adjustment is to the power of portable terminal 30 wireless chargings; Charging is accomplished module 38 and is used for the charging completion signal according to portable terminal 30, stops portable terminal 30 is carried out wireless charging.
When wireless charging device of the present invention used, detection module 32 whenever sent on detection signal to the charging inlet 31 at a distance from a setting-up time; Then judge module 33 detect portable terminals 30 that send with the corresponding resonance response signal of detection signal, detect this resonance response signal like judge module 33, promptly send charging signals to charging inlet 31.
Charging module 34 is in second setting-up time subsequently; Detect portable terminal 30 that send with the charging signals back-signalling that charges accordingly; And portable terminal 30 being carried out wireless charging according to this charging back-signalling, this charging back-signalling comprises signal strength information, the sign of portable terminal 30 and the charge power information of portable terminal 30 that portable terminal 30 receives.Charging module 34 carries out wireless charging according to the charge power information configuration charging transmitting power of portable terminal 30 to portable terminal 30 simultaneously.In the wireless charging process, portable terminal 30 can regularly send charging to power regulation module 37 and adjust signal, and power regulation module 37 is according to the charging transmitting power of this charging adjustment signal adjustment charging module 34, to realize using best charge mode to charge.When the battery charge of portable terminal 30 finishes; Portable terminal 30 can send charging completion signal to charging and accomplish module 38; At this moment charging module 34 stops portable terminal 30 is charged; And wireless charging device gets into detected state (as at this moment detecting the portable terminal 30 that has been full of electricity again, according to the charging completion signal that portable terminal 30 sends, charging module 34 will can not charge again).
Like charging module 34 in second setting-up time; Do not detect the charging back-signalling; Judge that then the portable terminal 30 that is connected with charging inlet 31 is in over-discharge state or portable terminal 30 can't charge; At this moment 36 pairs of judge modules 33 of counting module receive resonance response signal, and charging module 34 does not receive the number of times (promptly to same portable terminal 30 precharge number of times) of charging back-signalling and adds up, and sends precharging signals with control pre-charge module 35.Like the count value of counting module 36 less than set point; Then the portable terminal 30 on 35 pairs of charging inlets 31 of pre-charge module carries out precharge; Count value like counting module 36 equals set point, then judges the battery existing problems of this portable terminal 30 itself, can't charge.
When the count value of counting module 36 during less than set point; Judge that then portable terminal 30 is in over-discharge state, at this moment pre-charge module 35 uses the wireless charging signal of or a plurality of short time of space, little electric current, and the battery of portable terminal 30 is activated and precharge; For example use 10% of normal charging current; Charged 30 seconds, and stopped to charge 10 seconds, repeat a plurality of circulations.As making portable terminal 30 reach start voltage through above-mentioned pre-charge process, then portable terminal 30 can generate corresponding charging back-signalling to follow-up charging signals, thereby charging module 34 can carry out wireless charging to portable terminal 30 normally.After pre-charge module 35 had sent precharging signal, the count value of counting module 36 added one.
When the count value of counting module 36 equals set point, the count value zero clearing (initialization) of counting module 36, wireless charging device turns back to detected state.Here because the portable terminal 30 that can't charge possibly also be positioned on the charging inlet 31; Therefore can set long stopping detection time or wait for that the user carries out reset operation; To avoid wireless charging device to enter into pre-charge state by detected state repeatedly, cause the waste of energy.
The wireless charging method of portable terminal of the present invention and wireless charging device also can charge through wireless charging device through the precharge portable terminal of overdischarge that is arranged so that, have avoided existing wireless charging device can't carry out the technical problem of wireless charging to the portable terminal of overdischarge.Precharge has simultaneously guaranteed to charge effectively with being provided with of charging normal, and avoids overcharging the damage battery.
The above is merely embodiments of the invention; Be not so limit claim of the present invention; Every equivalent structure transformation that utilizes specification of the present invention and accompanying drawing content to be done, or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (10)
1. the wireless charging method of a portable terminal is characterized in that, comprises step:
Send the charging inlet of detection signal to wireless charging device, judge whether to receive and the corresponding resonance response signal of said detection signal, if then send charging signals to said charging inlet;
Judge whether to receive and the said charging signals back-signalling that charges accordingly, if then wireless charging is carried out at the corresponding mobile terminal, otherwise send precharging signal to said charging inlet.
2. the wireless charging method of portable terminal according to claim 1; It is characterized in that; Said step " is sent the charging inlet of detection signal to wireless charging device; judge whether to receive and the corresponding resonance response signal of said detection signal, if then send charging signals to said charging inlet " and being comprised:
Every at a distance from one first setting-up time; Send the charging inlet of detection signal to wireless charging device; As receive and the corresponding resonance response signal of said detection signal, then send charging signals to charging inlet, otherwise continue to send the charging inlet of said detection signal to said wireless charging device.
3. the wireless charging method of portable terminal according to claim 1; It is characterized in that; Said step " judges whether to receive and the said charging signals back-signalling that charges accordingly; if then wireless charging is carried out at the corresponding mobile terminal, otherwise send precharging signal to said charging inlet " and comprising:
In second setting-up time, judge whether to receive and the said charging signals back-signalling that charges accordingly, if then wireless charging is carried out at the corresponding mobile terminal, otherwise send precharging signal to said charging inlet; Said charging back-signalling comprises the charge power information of said portable terminal.
4. the wireless charging method of portable terminal according to claim 1 is characterized in that, said step " is sent precharging signal to said charging inlet " and comprised step before:
One count value is set, less than said set point, sends precharging signal to said charging inlet like said count value, count value adds one simultaneously; Equal said set point like said count value, the then said count value of initialization, and continuation is sent the extremely charging inlet of said wireless charging device of said detection signal.
5. the wireless charging method of portable terminal according to claim 1; It is characterized in that; Said precharging signal is a plurality of charging signals of or space, the current strength of said precharging signal be normal charging current current strength 10% to 50%.
6. the wireless charging method of portable terminal according to claim 1 is characterized in that, the wireless charging method of said portable terminal also comprises step:
Receive the power adjustment signal of said portable terminal, according to said power adjustment signal, adjustment is to the power of said portable terminal wireless charging.
7. the wireless charging method of portable terminal according to claim 1 is characterized in that, the wireless charging method of said portable terminal also comprises step:
Receive the charging completion signal of said portable terminal, stop simultaneously said portable terminal is carried out wireless charging.
8. a wireless charging device is characterized in that, comprising:
Charging inlet is used to place portable terminal to be charged;
Detection module is used to send detection signal to said charging inlet;
Judge module is used for basis and the corresponding resonance response signal of said detection signal, sends charging signals to said charging inlet;
Charging module is used for basis and the said charging signals back-signalling that charges accordingly, and said portable terminal is carried out wireless charging;
Pre-charge module is used for receiving said resonance response signal when said judge module, when said charging module does not receive said charging back-signalling, sends precharging signal to said charging inlet; And
Counting module: be used to control said pre-charge module and send said precharging signal.
9. wireless charging device according to claim 8 is characterized in that, said precharging signal is a plurality of charging signals of or space, the current strength of said precharging signal be normal charging current current strength 10% to 50%.
10. wireless charging device according to claim 8 is characterized in that, said wireless charging device also comprises:
Power regulation module is used for the power adjustment signal according to said portable terminal, and adjustment is to the power of said portable terminal wireless charging; And
Module is accomplished in charging, is used for the charging completion signal according to said portable terminal, stops said portable terminal is carried out wireless charging;
Said charging back-signalling comprises the charge power information of said portable terminal.
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