CN105305650A - Wireless charging method and device, wireless charger and wearable device - Google Patents
Wireless charging method and device, wireless charger and wearable device Download PDFInfo
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- CN105305650A CN105305650A CN201510776867.0A CN201510776867A CN105305650A CN 105305650 A CN105305650 A CN 105305650A CN 201510776867 A CN201510776867 A CN 201510776867A CN 105305650 A CN105305650 A CN 105305650A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention provides a wireless charging method and device, a wireless charger and a wearable device. The method comprises the steps as follows: a periodic load pulse is transmitted through a first coil on the wearable device, so that the wireless charger charges the wearable device after detecting the load pulse through a second coil; whether battery power of the wearable device is fully charged or not is detected when the wearable device is in a charged state; and if the battery power is fully charged, a modulation is carried out on the load pulse to obtain a load modulation signal, so as to inform the wireless charger that charging is ended through the load modulation signal. According to the technical scheme provided by the invention, a communication instruction between the wireless charger and an intelligent wear device in the charging process can be identified by the periodic load pulse of the wearable device and the pulse modulation signal corresponding to the load pulse; and wireless charging of the wearable device can be achieved only by relatively few peripheral devices.
Description
Technical field
The application relates to wireless charging technical field, particularly relates to a kind of wireless charging method, device, wireless charger and wearable device.
Background technology
Along with the progress of technology and the transition of user's request, the form of Intelligent worn device and application are also in continuous change, and the mode that Intelligent worn device of the prior art is charged by Interface realization be unfavorable for the outward appearance innovation of Intelligent worn device and realize the demand of waterproof.The wireless charging standard of prior art comprises following three kinds: Qi standard, wireless charging alliance (PowerMattersAlliance, referred to as PMA) standard, wireless power alliance (AllianceforWirelessPower, referred to as A4WP) standard, above-mentioned three kinds of wireless charging standards need special wireless charging protocol chip to control charging process, therefore more peripheral components is needed, and the inner space of Intelligent worn device is less, by the wireless charging protocol chip required for above-mentioned standard and peripheral components, wireless charging is not realized to Intelligent worn device.
Summary of the invention
In view of this, the application provides a kind of new technical scheme, can to Intelligent worn device wireless charging.
For achieving the above object, the application provides technical scheme as follows:
According to the first aspect of the application, propose a kind of wireless charging method, be applied on wearable device, comprise:
Periodic load pulse is sent, for wireless charger by after the second Coil Detector to described load pulse being the charging of described wearable device by the first coil on described wearable device;
Carry out in the process of charged state at described wearable device, whether the battery electric quantity detecting described wearable device completely fills;
If described battery electric quantity completely fills, described load pulse is modulated, obtains load modulation signal, to be notified that by described load modulation signal the charging of described wireless charger terminates.
According to the second aspect of the application, propose a kind of wireless charging method, be applied on wireless charger, comprise:
If the second Coil Detector passing through described wireless charger, to the periodic load pulse from the first coil on wearable device, controls described wearable device and enters charged state;
In described charged state, determine whether the load modulation signal from described wearable device to be detected;
If described load modulation signal detected, control the wireless charging of described wireless charger stopping to described wearable device.
According to the third aspect of the application, propose a kind of wireless charging device, be applied on wearable device, comprise:
First sending module, for sending periodic load pulse by the first coil on described wearable device, for wireless charger by after the second Coil Detector to described load pulse being the charging of described wearable device;
First detection module, carry out in the process of charged state for the load pulse sent by described first sending module at described wearable device, whether the battery electric quantity detecting described wearable device completely fills;
Signal madulation module, if described first detection module detects that described battery electric quantity completely fills, described load pulse is modulated, obtain load modulation signal, described load pulse is sent to described wireless charger by described first coil, to be notified that by described load modulation signal the charging of described wireless charger terminates.
According to the fourth aspect of the application, propose a kind of wireless charging device, be applied on wireless charger, comprise:
First control module, if for the second Coil Detector by described wireless charger to the periodic load pulse from the first coil on wearable device, control described wearable device and enter charged state;
First determination module, for the described charged state controlled in described first control module, determines whether the load modulation signal from described wearable device to be detected;
Second control module, if determine described load modulation signal to be detected for described first determination module, controls the wireless charging of described wireless charger stopping to described wearable device.
According to the 5th aspect of the application, propose a kind of wearable device, described wearable device comprises:
First coil, for sending periodic load pulse, for wireless charger by after the second Coil Detector to described load pulse being the charging of described wearable device;
Battery management chip, for carrying out in the process of charged state at described wearable device, whether the battery electric quantity detecting described wearable device completely fills;
First microprocessor, if detect that described battery electric quantity completely fills for described battery management chip, control signal modulation module is modulated described load pulse, obtains load modulation signal, to be notified that by described load modulation signal the charging of described wireless charger terminates.
According to the 6th aspect of the application, propose a kind of wireless charger, described wireless charger comprises:
Second coil, for detecting the periodic load pulse from the first coil on wearable device;
Second microprocessor, for entering charged state at described second Coil Detector to controlling described wearable device during described load pulse, in described charged state, determines whether the load modulation signal from described wearable device to be detected; If described load modulation signal detected, control the wireless charging of described wireless charger stopping to described wearable device.
From above technical scheme, the application achieves and utilizes the periodic load pulse of wearable device and pulse-modulated signal corresponding to load pulse to identify the communication instruction between wireless charger and Intelligent worn device when charging, due to the characteristic that load pulse is wearable device self, therefore wearable device does not need extra circuit to produce load pulse, therefore the wireless charging that less peripheral components can realize wearable device is only needed, circuit is simple and to take volume little, therefore the wearable device to the strict low-power consumption of circuit volume requirement is applicable to.
Accompanying drawing explanation
The structural representation of wearable device of Fig. 1 for providing according to the present invention one exemplary embodiment;
The structural representation of wireless charger of Fig. 2 for providing according to the present invention one exemplary embodiment;
The schematic flow sheet of wireless charging method of Fig. 3 A for providing according to the present invention one exemplary embodiment;
The schematic diagram of load pulse of Fig. 3 B for providing according to the present invention one exemplary embodiment;
The schematic diagram of load modulation signal of Fig. 3 C for providing according to the present invention one exemplary embodiment;
The schematic flow sheet of wireless charging method of Fig. 4 A for providing according to the another exemplary embodiment of the present invention;
The schematic diagram that Fig. 4 B is the direct impulse that provides wireless charger to launch according to the another exemplary embodiment of the present invention;
Fig. 5 is for according to the present invention's schematic flow sheet of wireless charging method of providing of an exemplary embodiment again;
The schematic flow sheet of wireless charging method of Fig. 6 for providing according to another exemplary embodiment of the present invention;
The structural representation of wireless charging device of Fig. 7 for providing according to the present invention one exemplary embodiment;
The structural representation of wireless charging device of Fig. 8 for providing according to the another exemplary embodiment of the present invention;
Fig. 9 is for according to the present invention's structural representation of wireless charging device of providing of an exemplary embodiment again;
The structural representation of wireless charging device of Figure 10 for providing according to another exemplary embodiment of the present invention.
Embodiment
Here will be described exemplary embodiment in detail, its sample table shows in the accompanying drawings.When description below relates to accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawing represents same or analogous key element.Execution mode described in following exemplary embodiment does not represent all execution modes consistent with the application.On the contrary, they only with as in appended claims describe in detail, the example of apparatus and method that some aspects of the application are consistent.
Only for describing the object of specific embodiment at term used in this application, and not intended to be limiting the application." one ", " described " and " being somebody's turn to do " of the singulative used in the application and appended claims is also intended to comprise most form, unless context clearly represents other implications.It is also understood that term "and/or" used herein refer to and comprise one or more project of listing be associated any or all may combine.
Term first, second, third, etc. may be adopted although should be appreciated that to describe various information in the application, these information should not be limited to these terms.These terms are only used for the information of same type to be distinguished from each other out.Such as, when not departing from the application's scope, the first information also can be called as the second information, and similarly, the second information also can be called as the first information.Depend on linguistic context, word as used in this " if " can be construed as into " ... time " or " when ... time " or " in response to determining ".
The structural representation of wearable device of Fig. 1 for providing according to the present invention one exemplary embodiment; As shown in Figure 1, wearable device comprises: the first coil 11, charging management chip 12, rechargeable battery 13, first microprocessor 14 and motor 15; Wherein, when wearable device is not charged by the first coil 11 pairs of rechargeable batteries 13, charging management chip 12 is powered for first microprocessor 14 by rechargeable battery 13, wherein, charging management chip 12 can comprise low pressure difference linear voltage regulator (LowDropoutLineraRegulators, referred to as LDO) function and Charge Management function; When wearable device is in charged state, charging management chip 12 is charged for rechargeable battery 13 by the first coil 11, and powers for first microprocessor 14.
Because wearable device has the characteristic periodically waking dormancy up, therefore wearable device can form periodic load pulse, can, using the identify label of periodic load pulse as wireless charger identification wearable device, be its charging after identifying wearable device for wireless charger according to this load pulse.
In one embodiment, wearable device can also comprise motor 15 or load-modulate circuit, when charging management chip 12 detects that the electricity of rechargeable battery 13 is full of, charging management chip 12 can send an index signal to first microprocessor 14, make first microprocessor 14 control motor 15 according to this index signal to be switched in alternation in the mode at setting-up time interval and the mode that disconnects is modulated load pulse, wherein, setting-up time interval can be the time span of millisecond magnitude.In another embodiment, by the initiatively modulation of formation to load current of load-modulate circuit (not shown), specific modulation waveform can be formed, notice wireless charger complete charge; Wireless charger is by detecting this specific load waveform, complete charge.
The structural representation of wireless charger of Fig. 2 for providing according to the present invention one exemplary embodiment; As shown in Figure 2, wireless charger can comprise: the second coil 21, second microprocessor 22, switch mosfet 23 and filter circuit 24.Wherein, microprocessor 23 can detect the load pulse from wearable device by periodically emission detection pulse.
When wearable device is placed on wireless charger, the load pulse of the constant cycle that wireless charger can detect, wireless charger keeps acquisition mode, and connects switch mosfet 23, to pass through the second coil 21 for wearable device charging; In addition, filter circuit 24 can be used for filtering and flow through the noise current of the second coil 21.In addition, if the current value of the load pulse that the second microprocessor 22 detects is constant and is greater than a predetermined threshold value, now can determine wireless charger is provided with foreign matter, second microprocessor 22 can control switch mosfet 23 and turn off, thus realize the function of foreign bodies detection (FOD), in this case, wireless charger can keep the state of lasting emission detection pulse, thus guarantees follow-uply can wearable device be detected.
Known by the description of foregoing circuit, the application can make full use of the own characteristic of the hardware circuit of wearable device, the communication identification of wireless charger and Intelligent worn device can be realized by load pulse and direct impulse, and the circuit of wearable device and wireless charger is simple, take volume little, be therefore applicable to the wearable device to the strict low-power consumption of circuit volume requirement.
The application is further detailed by the following example below in conjunction with above-mentioned Fig. 1 and Fig. 2:
The schematic flow sheet of wireless charging method of Fig. 3 A for providing according to the present invention one exemplary embodiment, the schematic diagram of load pulse of Fig. 3 B for providing according to the present invention one exemplary embodiment, the schematic diagram of load modulation signal of Fig. 3 C for providing according to the present invention one exemplary embodiment; As shown in Figure 3A, comprise the steps:
Step 301, sends periodic load pulse by the first coil on wearable device, is wearable device charging for wireless charger after passing through the second Coil Detector to load pulse.
Step 302, carries out in the process of charged state at wearable device, whether the battery electric quantity detecting wearable device completely fills.
Step 303, if battery electric quantity completely fills, modulates load pulse, obtains load modulation signal, to be terminated by the charging of load modulation signal notice wireless charger.
In step 301, load pulse can see shown in Fig. 3 B, and in one embodiment, the cycle of load pulse can be determined according to the type of wearable device or model, and and consult between corresponding wireless charger, the size of the application to the cycle of load pulse does not limit.
In step 302, in one embodiment, whether the electricity that can detect the rechargeable battery 13 of wearable device by the charging management chip 12 shown in above-mentioned Fig. 1 is full of.
In step 303, in one embodiment, by the mode controlling the motor of wearable device and to be switched in alternation in the mode at setting-up time interval and disconnect, load pulse can be modulated; In another embodiment, can be modulated load pulse by the load-modulate circuit of wearable device, form the load modulation signal of setting.Load modulation signal can see shown in Fig. 3 C, be modulated to example by the mode controlling motor 15 and to be switched in alternation in the mode at setting-up time interval and disconnect to the load pulse shown in Fig. 3 B with first microprocessor 14 to be described, when charging management chip 12 detects that rechargeable battery 13 completely fills, first microprocessor 14 controls motor 15 and vibrates twice, thus form the load-modulate of a big current, and then load modulation signal is illustrated in the mode of Fig. 3 C.
Seen from the above description, the embodiment of the present invention is achieved by above-mentioned steps 301-step 303 and utilizes the periodic load pulse of wearable device and pulse-modulated signal corresponding to load pulse to identify communication instruction between wireless charger and Intelligent worn device when charging, due to the characteristic that load pulse is wearable device self, therefore wearable device does not need extra circuit to produce load pulse, therefore the wireless charging that less peripheral components can realize wearable device is only needed, circuit is simple and to take volume little, therefore the wearable device to the strict low-power consumption of circuit volume requirement is applicable to.
The schematic flow sheet of wireless charging method of Fig. 4 A for providing according to the another exemplary embodiment of the present invention, the schematic diagram that Fig. 4 B is the direct impulse that provides wireless charger to launch according to the another exemplary embodiment of the present invention; As shown in Figure 4 A, comprise the steps:
Step 401, if by the second Coil Detector of wireless charger to the periodic load pulse from the first coil on wearable device, controls wearable device and enters charged state;
Step 402, in charged state, determines whether the load modulation signal from wearable device to be detected;
Step 403, if load modulation signal detected, controls the wireless charging of wireless charger stopping to wearable device.
The related description of the load pulse in above-mentioned steps 401 and the load modulation signal in step 402 see the related description of above-mentioned Fig. 3 A illustrated embodiment, can be not described in detail in this.
In step 403, in one embodiment, can control the wireless charging of wireless charger stopping to wearable device by the switch 23 disconnected in above-mentioned Fig. 2, such as, the second microprocessor 22 is by sending a low level with the shutoff of control switch 23 to switch 23.As shown in Figure 4 B, the direct impulse that wireless charger is launched can be intermittent with setting cycle change, and such as, setting cycle is 100KHz.
In the present embodiment, the embodiment of the present invention passes through the second Coil Detector of wireless charger to the periodic load pulse from the first coil on wearable device, control wearable device and enter charged state, if load modulation signal detected in charged state, control the wireless charging of wireless charger stopping to wearable device, thus achieve and identify communication instruction between Intelligent worn device when charging by load pulse and pulse-modulated signal corresponding to load pulse, thus wireless charger can be made not need extra peripheral components can carry out wireless charging to wearable device, thus only need comparatively simple circuit structure to realize when improving wireless charger, reduce the hardware cost of wireless charger.
Fig. 5 is for according to the present invention's schematic flow sheet of wireless charging method of providing of an exemplary embodiment again; The present embodiment carries out overcurrent protection to wireless charger carry out exemplary illustration how to detect when the internal circuit of wearable device exists exception or short circuit, and the present embodiment composition graphs 2 is described, and as shown in Figure 5, comprises the steps:
Step 501, whether detection flows through the load current of the second coil of wireless charger more than the first predetermined threshold value, if load current is more than the first predetermined threshold value, performs step 502, if load current overcurrent, performs step 504.
Step 502, if load current is not more than the first predetermined threshold value, determine whether the charging mark of wireless charger represents that wireless charger charging terminates, if charging mark represents chargeable state, perform step 503, if charging mark represents charging done state, by whether following detection wireless charger embodiment illustrated in fig. 6 is placed with foreign matter, first can not describe in detail at this.
Step 503, if charging mark represents chargeable state, control wearable device and enter charged state, and charge to wearable device according to the mode of above-mentioned Fig. 4 A illustrated embodiment, flow process terminates.
Step 504, if load current is more than the first predetermined threshold value, determines that wireless charger is in charging abnormality.
Step 505, stops the wireless charging to wearable device, and charging mark is set to the done state that charges.
In step 501, after second microprocessor 22 can carry out filtering by filter circuit 24 to the electric current flowing through the second coil 21, determine that whether the load current flowing through the second coil 21 is more than the first predetermined threshold value, in one embodiment, the scope of the load current that the second microprocessor 22 can set when a wearable device charges normal determines the first predetermined threshold value, if exceed this first predetermined threshold value can determine load current overcurrent.
In step 502, in one embodiment, charging mark (EndFlag) can be set to 0 when representing chargeable state, when the second microprocessor 22 needs to terminate the charged state to wearable device, this charging mark is set to 1.In one embodiment, when wireless charger does not receive the load pulse from wearable device, represent that wearable device has been removed from wireless charger or wireless charger does not place wearable device, now this charging mark can be set to 0.
In step 504 and step 505; when there is exception or short circuit in the internal circuit of wearable device; wireless charger can detect that load current is bigger than normal; such as; second microprocessor 22 detects that load current is greater than a predetermined threshold value; now the second microprocessor 22 can judge that wearable device occurs that charging is abnormal; can not be damaged by larger electric current in order to ensure wearable device; second microprocessor 22 can turn off by control switch 23, thus realizes the overcurrent protection function to wearable device.
In the present embodiment; by detecting the load current whether overcurrent flowing through the second coil of wireless charger; when load current overcurrent; stop the wireless charging to wearable device; thus wearable device can be protected can not to be damaged by larger electric current, extend the useful life of wearable device.
The schematic flow sheet of wireless charging method of Fig. 6 for providing according to another exemplary embodiment of the present invention; The present embodiment wireless charger is placed with foreign matter carries out exemplary illustration how to detect, and the present embodiment composition graphs 2 is described, and as shown in Figure 6, comprises the steps:
Step 601, if the periodic load pulse from the first coil on wearable device do not detected by the second coil of wireless charger, is set to chargeable state by the charging of wireless charger mark.
Step 602, determines that whether the load current flowing through the second coil is more than the second predetermined threshold value, if current value is more than the second predetermined threshold value, performs step 603, if current value is not more than the second predetermined threshold value, continues emission detection pulse;
Step 603, if current value is more than the second predetermined threshold value, determines wireless charger is provided with foreign matter.
Step 604, controls wireless charger and stops, to wearable device charging, keeping wireless charger to be in the state of lasting emission detection pulse.
The associated description of step 601 see the description of above-mentioned steps 502, can be not described in detail in this.
In step 602 and step 603, if when EndFlag==0, second microprocessor 22 still can detect the load current flowed through on the second coil 21, and flow through the load current of the second coil 21 more than the second predetermined threshold value, now can determine wireless charger is placed with metal derby etc., induction due to this metal derby causes the load current flowing through the second coil 21 to increase, and this load current is constant current, thus can determine wireless charger is provided with foreign matter.
Direct impulse in step 604 see shown in above-mentioned Fig. 4 B, can be not described in detail in this.
In the present embodiment, when the charging mark of wireless charger is set to chargeable state, the load current flowing through the second coil is detected, thus can determine whether wireless charger is placed with foreign matter, achieve the function of foreign bodies detection (FOD), guarantee that the normal charging condition of wireless charger is not disturbed.
Pass through above-described embodiment, the application is by utilizing the feature of wearable device circuit self, realize the communication identification of wireless charger and Intelligent worn device, the peripheral circuit of wearable device and wireless charger is simple, take volume little, therefore the application is particularly useful for the wearable electronic product to the strict low-power consumption of circuit volume requirement.
The structural representation of wireless charging device of Fig. 7 for providing according to the present invention one exemplary embodiment; As shown in Figure 7, this wireless charging device can comprise: the first sending module 71, first detection module 72, signal madulation module 73.Wherein:
First sending module 71, for sending periodic load pulse by the first coil on wearable device, is wearable device charging for wireless charger after passing through the second Coil Detector to load pulse;
First detection module 72, for being undertaken in the process of charged state at wearable device by the load pulse that the first sending module 71 sends, whether the battery electric quantity detecting wearable device completely fills;
Signal madulation module 73, if first detection module 72 detects that battery electric quantity completely fills, load pulse is modulated, obtain load modulation signal, load pulse is sent to wireless charger by the first coil, to be terminated by the charging of load modulation signal notice wireless charger.
The structural representation of wireless charging device of Fig. 8 for providing according to the another exemplary embodiment of the present invention; As shown in Figure 8, on above-mentioned basis embodiment illustrated in fig. 7, in one embodiment, signal madulation module 73 comprises:
First modulating unit 731, modulates load pulse for the mode by controlling the motor of wearable device and to be switched in alternation in the mode at setting-up time interval and disconnecting.
In one embodiment, signal madulation module also can comprise:
Second modulating unit 732, modulates load pulse for the load-modulate circuit by wearable device, forms the load modulation signal of setting.
Fig. 9 is for according to the present invention's structural representation of wireless charging device of providing of an exemplary embodiment again; As shown in Figure 9, this wireless charging device can comprise: the first control module 91, first determination module 92, second control module 93.Wherein:
First control module 91, if for the second Coil Detector by wireless charger to the periodic load pulse from the first coil on wearable device, controls wearable device and enters charged state;
First determination module 92, for the charged state controlled in the first control module 91, determines whether the load modulation signal from wearable device to be detected;
Second control module 93, if determine load modulation signal to be detected for the first determination module 92, controls the wireless charging of wireless charger stopping to wearable device.
The structural representation of wireless charging device of Figure 10 for providing according to another exemplary embodiment of the present invention; As Figure 10, on above-mentioned basis embodiment illustrated in fig. 9, device also can comprise:
Whether second detection module 94, for detecting the load current of the second coil flowing through wireless charger more than the first predetermined threshold value;
Second determination module 95, if detect that load current is not more than the first predetermined threshold value for the second detection module 94, determines whether the charging mark of wireless charger represents that wireless charger charging terminates;
If the second determination module 95 determines charging, mark represents chargeable state, and the first control module 91 performs and controls the step that wearable device enters charged state.
In one embodiment, device also can comprise:
3rd determination module 96, if detect that load current is more than the first predetermined threshold value for the second detection module 94, determines that wireless charger is in charging abnormality;
Stop the wireless charging to wearable device second control module 93 is also for being in charging abnormality during at the 3rd determination module 96 wireless charger, and charging mark is set to the done state that charges.
In one embodiment, device also can comprise:
Mark arranges module 97, if for the periodic load pulse from the first coil on wearable device not detected by the second coil of wireless charger, the charging of wireless charger mark is set to chargeable state.
In one embodiment, device also can comprise:
4th determination module 98, for determining that whether the load current flowing through the second coil is more than the second predetermined threshold value;
5th determination module 99, if determine that load current is more than the second predetermined threshold value for the 4th determination module 98, determines wireless charger is provided with foreign matter.
Above-described embodiment is visible, the application is by utilizing the feature of wearable device circuit self, realize the communication identification of wireless charger and Intelligent worn device, the peripheral circuit of wearable device and wireless charger is simple, take volume little, therefore the application is particularly useful for the wearable electronic product to the strict low-power consumption of circuit volume requirement.
Those skilled in the art, at consideration specification and after putting into practice invention disclosed herein, will easily expect other embodiment of the application.The application is intended to contain any modification of the application, purposes or adaptations, and these modification, purposes or adaptations are followed the general principle of the application and comprised the undocumented common practise in the art of the application or conventional techniques means.Specification and embodiment are only regarded as exemplary, and true scope and the spirit of the application are pointed out by claim below.
Also it should be noted that, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, commodity or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, commodity or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, commodity or the equipment comprising described key element and also there is other identical element.
The foregoing is only the preferred embodiment of the application, not in order to limit the application, within all spirit in the application and principle, any amendment made, equivalent replacements, improvement etc., all should be included within scope that the application protects.
Claims (20)
1. a wireless charging method, is applied on wearable device, it is characterized in that, comprising:
Periodic load pulse is sent, for wireless charger by after the second Coil Detector to described load pulse being the charging of described wearable device by the first coil on described wearable device;
Carry out in the process of charged state at described wearable device, whether the battery electric quantity detecting described wearable device completely fills;
If described battery electric quantity completely fills, described load pulse is modulated, obtains load modulation signal, to be notified that by described load modulation signal the charging of described wireless charger terminates.
2. method according to claim 1, is characterized in that, describedly modulates described load pulse, comprising:
The mode be switched in alternation in the mode at setting-up time interval by the motor that controls described wearable device and disconnect is modulated described load pulse.
3. method according to claim 1, is characterized in that, describedly modulates described load pulse, comprising:
By the load-modulate circuit of described wearable device, described load pulse is modulated, form the load modulation signal of setting.
4. a wireless charging method, is applied on wireless charger, it is characterized in that, comprising:
If the second Coil Detector passing through described wireless charger, to the periodic load pulse from the first coil on wearable device, controls described wearable device and enters charged state;
In described charged state, determine whether the load modulation signal from described wearable device to be detected;
If described load modulation signal detected, control the wireless charging of described wireless charger stopping to described wearable device.
5. method according to claim 4, is characterized in that, described method also comprises:
Whether detection flows through the load current of the second coil of described wireless charger more than the first predetermined threshold value;
If described load current does not exceed described first predetermined threshold value, determine whether the charging mark of described wireless charger represents that the charging of described wireless charger terminates;
If described charging mark represents chargeable state, perform the step that the described wearable device of described control enters charged state.
6. method according to claim 5, is characterized in that, described method also comprises:
If described load current exceedes described first predetermined threshold value, determine that described wireless charger is in charging abnormality;
Stop the wireless charging to described wearable device, and described charging mark is set to the done state that charges.
7. method according to claim 4, is characterized in that, described method also comprises:
If the periodic load pulse from the first coil on wearable device do not detected by the second coil of described wireless charger, the charging of described wireless charger mark is set to chargeable state.
8. method according to claim 7, is characterized in that, described method also comprises:
Determine that whether the load current flowing through described second coil is more than the second predetermined threshold value;
If described load current exceedes described second predetermined threshold value, determine described wireless charger is provided with foreign matter.
9. a wireless charging device, is applied on wearable device, it is characterized in that, comprising:
First sending module, for sending periodic load pulse by the first coil on described wearable device, for wireless charger by after the second Coil Detector to described load pulse being the charging of described wearable device;
First detection module, carry out in the process of charged state for the load pulse sent by described first sending module at described wearable device, whether the battery electric quantity detecting described wearable device completely fills;
Signal madulation module, if described first detection module detects that described battery electric quantity completely fills, described load pulse is modulated, obtain load modulation signal, described load pulse is sent to described wireless charger by described first coil, to be notified that by described load modulation signal the charging of described wireless charger terminates.
10. device according to claim 9, is characterized in that, described signal madulation module comprises:
First modulating unit, modulates described load pulse for the mode by controlling the motor of described wearable device and to be switched in alternation in the mode at setting-up time interval and disconnecting.
11. devices according to claim 9, is characterized in that, described signal madulation module comprises:
Second modulating unit, modulates described load pulse for the load-modulate circuit by described wearable device, forms the load modulation signal of setting.
12. 1 kinds of wireless charging devices, are applied on wireless charger, it is characterized in that, comprising:
First control module, if for the second Coil Detector by described wireless charger to the periodic load pulse from the first coil on wearable device, control described wearable device and enter charged state;
First determination module, for the described charged state controlled in described first control module, determines whether the load modulation signal from described wearable device to be detected;
Second control module, if determine described load modulation signal to be detected for described first determination module, controls the wireless charging of described wireless charger stopping to described wearable device.
13. devices according to claim 12, is characterized in that, described device also comprises:
Whether second detection module, for detecting the load current of the second coil flowing through described wireless charger more than the first predetermined threshold value;
Second determination module, if detect that described load current does not exceed described first predetermined threshold value for described second detection module, determines whether the charging mark of described wireless charger represents that the charging of described wireless charger terminates;
If described second determination module determines described charging, mark represents chargeable state, and described first control module performs the step that the described wearable device of described control enters charged state.
14. devices according to claim 13, is characterized in that, described device also comprises:
3rd determination module, if detect that described load current exceedes described first predetermined threshold value for described second detection module, determines that described wireless charger is in charging abnormality;
Described charging mark also for stopping the wireless charging to described wearable device, and is set to the done state that charges by described second control module.
15. devices according to claim 12, is characterized in that, described device also comprises:
Mark arranges module, if for the periodic load pulse from the first coil on wearable device not detected by the second coil of described wireless charger, the charging of described wireless charger mark is set to chargeable state.
16. devices according to claim 15, is characterized in that, described device also comprises:
4th determination module, for determining that whether the load current flowing through described second coil is more than the second predetermined threshold value;
5th determination module, if determine that described load current exceedes described second predetermined threshold value for described 4th determination module, determines described wireless charger is provided with foreign matter.
17. 1 kinds of wearable devices, is characterized in that, described wearable device comprises:
First coil, for sending periodic load pulse, for wireless charger by after the second Coil Detector to described load pulse being the charging of described wearable device;
Battery management chip, for carrying out in the process of charged state at described wearable device, whether the battery electric quantity detecting described wearable device completely fills;
First microprocessor, if detect that described battery electric quantity completely fills for described battery management chip, control signal modulation module is modulated described load pulse, obtains load modulation signal, to be notified that by described load modulation signal the charging of described wireless charger terminates.
18. wearable devices according to claim 17, is characterized in that, described wearable device also comprises:
Motor, modulates described load pulse for the mode be switched in alternation in the mode at setting-up time interval under the control of described first microprocessor and disconnect; And/or,
Pulse modulated circuit, for modulating described load pulse under the control of described first microprocessor, forms the load modulation signal of setting.
19. 1 kinds of wireless chargers, is characterized in that, described wireless charger comprises:
Second coil, for detecting the periodic load pulse from the first coil on wearable device;
Second microprocessor, for entering charged state at described second Coil Detector to controlling described wearable device during described load pulse, in described charged state, determines whether the load modulation signal from described wearable device to be detected; If described load modulation signal detected, control the wireless charging of described wireless charger stopping to described wearable device.
20. wireless chargers according to claim 19, is characterized in that, described wireless charger comprises:
Switch mosfet, for connecting under described second microprocessor-based control, with by described second coil transmissions direct impulse; And be turned off when the current value of the load pulse that described second microprocessor detects is constant and is greater than a predetermined threshold value.
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| CN105305650B (en) | 2019-03-15 |
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