CN108599392B - Wireless charging method and device and computer readable storage medium - Google Patents
Wireless charging method and device and computer readable storage medium Download PDFInfo
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- CN108599392B CN108599392B CN201810385413.4A CN201810385413A CN108599392B CN 108599392 B CN108599392 B CN 108599392B CN 201810385413 A CN201810385413 A CN 201810385413A CN 108599392 B CN108599392 B CN 108599392B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/90—Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
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Abstract
The invention discloses a wireless charging method, a wireless charging device and a computer readable storage medium, and belongs to the technical field of wireless. The method comprises the following steps: polling each working frequency in a working frequency range at a set period, and controlling a transmitting coil to transmit an analog pulse at the polled current working frequency, wherein the working frequency range comprises two or more working frequencies; if the change value of the electrical characteristic parameter value corresponding to the transmitting coil is determined to meet the set condition in the transmitting period of the analog pulse, controlling the transmitting coil to transmit the digital pulse at the current working frequency; and identifying a charging load according to the received feedback signal of the digital pulse, and wirelessly charging the identified charging load. Therefore, the wireless charging transmitting equipment can adaptively identify wireless loads at different distances, wireless charging is carried out, and the application range and flexibility of wireless charging are improved.
Description
Technical Field
The present invention relates to the field of wireless technologies, and in particular, to a wireless charging method and apparatus, and a computer-readable storage medium.
Background
Wireless charging technology (Wireless charging technology) is derived from Wireless power transmission technology, and electromagnetic induction type magnetic resonance, electric field coupling and the like can be adopted, energy is transmitted between a Wireless charging transmitting device and a charging load through a magnetic field or an electric field, and the Wireless charging transmitting device and the charging load are not connected through a wire, for example, a mobile phone is charged.
At present, in order to identify whether a charging load is in an effective charging range, a Wireless charging transmitting device may periodically transmit an energy pulse with a fixed frequency, which is called ping in a Wireless charging alliance (WPC), and this method is only applicable to charging loads with a small distance, such as a transmission distance of 2-8mm, but in other occasions requiring Wireless charging, sometimes a relatively large transmission distance is required, such as 30mm or even 50mm, and at this time, this method for identifying a charging load cannot be applied.
Disclosure of Invention
The embodiment of the invention provides a wireless charging method, a wireless charging device and a computer readable storage medium. The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview and is intended to neither identify key/critical elements nor delineate the scope of such embodiments. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is presented later.
According to a first aspect of the embodiments of the present invention, there is provided a wireless charging method, including:
polling each working frequency in a working frequency range at a set period, and controlling a transmitting coil to transmit an analog pulse at the polled current working frequency, wherein the working frequency range comprises two or more working frequencies;
if the change value of the electrical characteristic parameter value corresponding to the transmitting coil is determined to meet the set condition in the transmitting period of the analog pulse, controlling the transmitting coil to transmit the digital pulse at the current working frequency;
and identifying a charging load according to the received feedback signal of the digital pulse, and wirelessly charging the identified charging load.
In an embodiment of the present invention, before polling each operating frequency in the operating frequency range at the set period, the method further includes:
and configuring and storing the working frequency range according to the resonance frequency of the transmitting coil and the energy of the analog pulse corresponding to the resonance frequency.
In an embodiment of the present invention, the determining that the variation value of the electrical characteristic parameter value corresponding to the transmitting coil satisfies a setting condition includes:
when a first change value of a current value corresponding to the transmitting coil is larger than zero, determining that the change value meets a set condition;
when a second change value of the voltage value corresponding to the transmitting coil is smaller than zero, determining that the change value meets a set condition;
and when the first change value is larger than zero and the second change value is smaller than zero, determining that the change value meets a set condition.
In an embodiment of the present invention, after the controlling the transmitting coil to transmit the digital pulse at the current operating frequency, the method further includes:
ceasing polling each operating frequency in the operating frequency range.
According to a second aspect of the embodiments of the present invention, there is provided an apparatus for wireless charging, including:
the first transmission driving unit is used for polling each working frequency in a working frequency range in a set period and controlling the transmission coil to transmit an analog pulse at the polled current working frequency, wherein the working frequency range comprises two or more working frequencies;
the second transmitting driving unit is used for controlling the transmitting coil to transmit digital pulses at the current working frequency if the change value of the electrical characteristic parameter value corresponding to the transmitting coil is determined to meet the set condition in the transmitting period of the analog pulses;
and the identification charging unit is used for identifying a charging load according to the received feedback signal of the digital pulse and wirelessly charging the identified charging load.
In an embodiment of the present invention, the apparatus further includes:
and the configuration unit is used for configuring and storing the working frequency range according to the resonant frequency of the transmitting coil and the energy of the analog pulse corresponding to the resonant frequency.
In an embodiment of the present invention, the second transmitting driving unit is specifically configured to determine that a first variation value of a current value corresponding to the transmitting coil is greater than zero, where the variation value meets a set condition; when a second change value of the voltage value corresponding to the transmitting coil is smaller than zero, determining that the change value meets a set condition; and when the first change value is larger than zero and the second change value is smaller than zero, determining that the change value meets a set condition.
In an embodiment of the present invention, the apparatus further includes:
and the control unit is used for stopping polling each working frequency in the working frequency range after the transmitting coil is controlled to transmit the digital pulse at the current working frequency.
According to a third aspect of the embodiments of the present invention, there is provided an apparatus for wireless charging, configured to wirelessly charge a transmitting device, including:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to:
polling each working frequency in a working frequency range at a set period, and controlling a transmitting coil to transmit an analog pulse at the polled current working frequency, wherein the working frequency range comprises two or more working frequencies;
if the change value of the electrical characteristic parameter value corresponding to the transmitting coil is determined to meet the set condition in the transmitting period of the analog pulse, controlling the transmitting coil to transmit the digital pulse at the current working frequency;
and identifying a charging load according to the received feedback signal of the digital pulse, and wirelessly charging the identified charging load.
According to a fourth aspect of embodiments of the present invention, there is provided a computer readable storage medium having stored thereon computer instructions which, when executed by a processor, implement the steps of the above-described method.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
in the embodiment of the invention, the wireless charging and transmitting equipment transmits the simulation pulse ping at the converted working frequency, and if the transmitting coil is controlled to transmit the simulation pulse at the current working frequency, when an object is determined to be placed on the transmitting interface, the wireless load is identified based on the current working frequency, and wireless charging is carried out.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a block diagram illustrating a wireless charging system in accordance with an exemplary embodiment;
fig. 2 is a flow chart illustrating a wireless charging method according to an example embodiment;
FIG. 3 is a flow chart illustrating a wireless charging method according to an exemplary embodiment;
FIG. 4 is a schematic diagram illustrating an analog pulse in wireless charging, according to an example embodiment;
FIG. 5 is a block diagram illustrating a wireless charging device in accordance with an exemplary embodiment;
fig. 6 is a block diagram illustrating a wireless charging device according to an example embodiment.
Detailed Description
The following description and the drawings sufficiently illustrate specific embodiments of the invention to enable those skilled in the art to practice them. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The scope of embodiments of the invention encompasses the full ambit of the claims, as well as all available equivalents of the claims. Embodiments may be referred to herein, individually or collectively, by the term "invention" merely for convenience and without intending to voluntarily limit the scope of this application to any single invention or inventive concept if more than one is in fact disclosed. Herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed. The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the structures, products and the like disclosed by the embodiments, the description is relatively simple because the structures, the products and the like correspond to the parts disclosed by the embodiments, and the relevant parts can be just described by referring to the method part.
The wireless charging system includes: the wireless charging transmitting device and the charging load are connected through a wire, and energy is transmitted between the wireless charging transmitting device and the charging load through a magnetic field. In the embodiment of the invention, the wireless charging transmitting equipment can adaptively identify the wireless loads at different distances to perform wireless charging, so that the charging loads can be wirelessly charged in multiple scenes, and the application range and flexibility of the wireless charging are improved.
Fig. 1 is a block diagram illustrating a wireless charging system according to an exemplary embodiment. As shown in fig. 1, the wireless charging system may include: wireless charging transmitting device 100 and charging load 200.
The wireless charging transmitting device 100 and the charging load 200 transmit energy through a magnetic field, and the wireless charging transmitting device and the charging load are not connected through a wire. The wireless charging may include: mobile communication device, palm computer, intelligent stereo set, intelligent wearing equipment and so on.
The process of charging may include: the wireless charging transmitting device 100 can control the transmitting coil to transmit the analog pulse to perform the analog ping, receive the feedback signal of the analog ping, continue to make the transmitting coil to transmit the digital pulse to perform the digital ping, then identify and configure the charging load 200 according to the feedback signal of the digital ping, and finally wirelessly charge the identified charging load 200.
In the embodiment of the present invention, the wireless charging and transmitting device 100 transmits the analog pulse ping at the changed operating frequency, and if it is determined that an object is placed on the transmitting interface when the transmitting coil is controlled to transmit the analog pulse at the current operating frequency, the digital pulse ping may be transmitted based on the current operating frequency to further identify the charging load 200, and perform wireless charging. For example: when the wireless charging transmitting device 100 transmits the simulation pulse ping at the first working frequency, it can be determined that an object is placed on the transmitting interface, and thus it is recognized that the charging load 200 at a distance of 2-8mm is wirelessly charged. If the wireless charging transmitting device 100 transmits the analog pulse ping at the second operating frequency, it may be determined that an object is placed on the transmitting interface, and thus it is recognized that the charging load 200 is located at a distance of 10-20mm for wireless charging. Alternatively, if the wireless charging transmitting device 100 transmits the simulation pulse ping at the third operating frequency, it may be determined that an object is placed on the transmitting interface, and thus it is recognized that the charging load 200 at a distance of 30-50mm is wirelessly charged. The third working frequency is greater than the second working frequency, and the second working frequency is greater than the first working frequency.
Therefore, the wireless charging transmitting equipment can adaptively identify wireless loads at different distances and perform wireless charging, so that the charging loads can be wirelessly charged in multiple scenes, and the application range and flexibility of wireless charging are improved.
Based on the wireless charging system, a method of wireless charging may be specifically described.
Fig. 2 is a flow chart illustrating a wireless charging method according to an example embodiment. As shown in fig. 2, the wireless charging process includes:
step 201: and polling each working frequency in the working frequency range at a set period, and controlling the transmitting coil to transmit the analog pulse at the polled current working frequency.
The wireless charging transmitting device may pre-store an operating frequency range. The operating frequency range includes two or more operating frequencies. In general, the operating frequency range may be configured according to the performance of a transmitting coil in the wireless charging and transmitting device and the self-adaptive distance requirement, and specifically may include: and configuring and storing the working frequency range according to the resonance frequency of the transmitting coil and the energy of the analog pulse corresponding to the resonance frequency. Or, according to the resonance frequency of the transmitting coil and the set distance, configuring and storing the working frequency range.
For example: the resonant frequency of the transmitting coil is f, and the energy of the corresponding analog pulse is p, so that the required energy can be set to gradually increase, for example, the first energy p1 ═ p (1+ 10%), the second energy p2 ═ p (1+ 20%), and the fifth energy p5 ═ p (1+ 50%) …. Thus, each required energy corresponds to an operating frequency f1, f2 … f 5. Thus, the operating frequency range of the configuration may be (f, f1, f2 … f 5). Of course, without being limited thereto, the incremental proportion of the required energy may be 1% -20%, and the maximum energy may be defined according to the performance of the transmitting coil. Not specifically listed.
Alternatively, the required distances may be divided into 0-5mm, 5-10,10-15mm …, 45-50mm, so that the energy of the corresponding analog pulse is p1, p2 … n, and the corresponding operating frequency is f1, f2 … fn. Thus, the operating frequency range of the configuration may be (f, f1, f2 … fn). The division of the distance is also not limited thereto, and for example, division is performed at intervals of 2 to 10 mm.
After the working frequency range is configured and stored, the wireless charging transmitting device can set each working frequency in the periodic polling working frequency range in the process of performing the simulation ping, and control the transmitting coil to transmit the simulation pulse according to the polled current working frequency.
The set period may be t ', so that, every interval t', one working frequency is obtained from the working frequency range, determined as the current working frequency, and the transmitting coil is controlled to transmit the simulation pulse at the current working frequency to simulate ping. The transmission period of the analog pulse may be t, typically t < t'. I.e. the emission period is smaller than the set period.
The operating frequency ranges have two or more operating frequencies and may be sorted by size so that each operating frequency in the operating frequency range may be polled in order of magnitude or magnitude. Alternatively, each operating frequency in the range of one or two polling operating frequencies may be spaced according to other rules, for example.
Step 202: and if the change value of the electrical characteristic parameter value corresponding to the transmitting coil is determined to meet the set condition in the transmitting period of the analog pulse, controlling the transmitting coil to transmit the digital pulse at the current working frequency.
In the process of simulating ping, the wireless charging transmitting equipment can determine that a metal substance is placed on the transmitting interface when the electric characteristic parameter value corresponding to the transmitting coil changes, so that if the change value of the electric characteristic parameter value corresponding to the transmitting coil meets the set condition in the transmitting period t of the simulation pulse, the wireless charging transmitting equipment can determine that the substance is on the transmitting interface and can carry out digital ping by transmitting the digital pulse. Therefore, when the change value of the electrical characteristic parameter value corresponding to the transmitting coil is determined to meet the set condition, the transmitting coil is controlled to transmit the digital pulse at the current working frequency.
Wherein, the electrical characteristic parameter value corresponding to the transmitting coil may include: one or two of the current value and the voltage value, so that determining that the variation value of the electrical characteristic parameter value corresponding to the transmitting coil satisfies the set condition may include: when a first change value of a current value corresponding to the transmitting coil is larger than zero, determining that the change value meets a set condition; when a second change value of the voltage value corresponding to the transmitting coil is smaller than zero, determining that the change value meets a set condition; and when the first change value is larger than zero and the second change value is smaller than zero, determining that the change value meets the set condition.
Step 203: and identifying the charging load according to the received feedback signal of the digital pulse, and wirelessly charging the identified charging load.
The wireless charging transmitting device identifies the charging load through digital ping, and then the wireless charging transmitting device can wirelessly charge the identified charging load.
Therefore, in the embodiment of the invention, the wireless charging transmitting device transmits the simulation pulse ping at the changed working frequency, and if the transmitting coil is controlled to transmit the simulation pulse at the current working frequency, when an object is determined to be placed on the transmitting interface, the wireless load is identified based on the current working frequency, and wireless charging is carried out.
Of course, after the charging load has been identified and the identified charging load is wirelessly charged, in another embodiment of the present invention, polling of each operating frequency in the range of operating frequencies may be stopped. Therefore, the flow is saved, and the occupation of resources is reduced. After a charging load is charged, each working frequency in the polling working frequency range can be continuously polled, the simulation ping and the digital ping are continuously carried out, and the charging load is identified to carry out wireless charging.
The following operational flows are grouped into specific embodiments to illustrate the methods provided by the embodiments of the present disclosure.
In this embodiment, the operating frequency range may be configured and stored according to the resonant frequency of the transmitting coil and the energy of the analog pulse corresponding to the resonant frequency, and may be (f, f1, f2 … f5), wherein each operating frequency may be arranged from small to large, i.e., fmin and f5 max.
Fig. 3 is a flow chart illustrating a wireless charging method according to an example embodiment. As shown in fig. 3, the wireless charging process is as follows:
step 301: and polling each working frequency in the working frequency range in a set period according to the sequence from small to large, and determining the polled working frequency as the current working frequency.
Step 302: and controlling the transmitting coil to transmit the analog pulse at the current working frequency.
The wireless charging transmitting device performs a ping simulation.
Step 303: determine whether a variation value of an electrical characteristic parameter value corresponding to the transmitting coil satisfies a set condition during a transmitting period of the analog pulse? If yes, go to step 304, otherwise, go back to step 301.
The set period of polling is t', and the transmission period of the analog pulse can be t, and the corresponding diagram of the analog pulse can be shown in fig. 4. That is, fig. 4 is a schematic diagram illustrating an analog pulse in wireless charging according to an exemplary embodiment. As shown in fig. 4, the transmission period t corresponding to each pulse is smaller than the set period t' of polling, and in the polling process, each operating frequency is not consistent, so that the transmission period t corresponding to each pulse is also different.
In the transmitting period t of the current analog pulse corresponding to the current working frequency, when a first change value of a current value corresponding to the transmitting coil is greater than zero, determining that the change value meets a set condition, and executing step 304; or, when the second variation value of the voltage value corresponding to the transmitting coil is less than zero, determining that the variation value meets the set condition, and executing step 304; alternatively, when the first variation value is greater than zero and the second variation value is less than zero, it is determined that the variation value satisfies the set condition, and step 304 may be executed.
Step 304: and controlling the transmitting coil to transmit digital pulses at the current working frequency.
And performing digital ping between the wireless charging transmitting device and the charging load.
Step 305: and identifying the charging load according to the received feedback signal of the digital pulse, and wirelessly charging the identified charging load.
The charging load is further identified and configured through digital ping, and then the identified charging load is wirelessly charged.
It can be seen that in this embodiment, the operating frequency may be polled from among f, f1, and f2 … f5, so that the energy of the transmitted analog pulse is different, and the areas of the corresponding transmission interfaces are also different, and thus, the charging loads at different distances may be identified, that is, the wireless charging transmitting device may adaptively identify the wireless loads at different distances to perform wireless charging, and thus, the charging loads may be wirelessly charged in multiple scenarios, and the application range and flexibility of wireless charging are improved.
The following are embodiments of the disclosed apparatus that may be used to perform embodiments of the disclosed methods.
According to the wireless charging process, a wireless charging device can be constructed.
Fig. 5 is a block diagram illustrating a wireless charging device according to an example embodiment. As shown in fig. 5, the apparatus may include: a first emission driving unit 510, a second emission driving unit 520, and an identification charging unit 530, wherein,
a first transmission driving unit 510, configured to poll each operating frequency in an operating frequency range at a set period, and control the transmission coil to transmit the analog pulse at the polled current operating frequency, where the operating frequency range includes two or more operating frequencies.
The second transmission driving unit 520 is configured to control the transmission coil to transmit the digital pulse at the current working frequency if it is determined that the variation value of the electrical characteristic parameter value corresponding to the transmission coil satisfies the set condition in the transmission period of the analog pulse.
And the identification charging unit 530 is configured to identify the charging load according to the received feedback signal of the digital pulse, and wirelessly charge the identified charging load.
In an embodiment of the present invention, the apparatus further includes:
and the configuration unit is used for configuring and storing the working frequency range according to the resonant frequency of the transmitting coil and the energy of the analog pulse corresponding to the resonant frequency.
In an embodiment of the present invention, the second transmitting driving unit 520 is specifically configured to determine that a variation value satisfies a set condition when a first variation value of a current value corresponding to the transmitting coil is greater than zero; when a second change value of the voltage value corresponding to the transmitting coil is smaller than zero, determining that the change value meets a set condition; and when the first change value is larger than zero and the second change value is smaller than zero, determining that the change value meets the set condition.
In an embodiment of the present invention, the apparatus further includes:
and the control unit is used for controlling each working frequency in the polling working frequency range after the transmitting coil is controlled to transmit the digital pulse at the current working frequency.
The following illustrates an apparatus provided by an embodiment of the present disclosure.
Fig. 6 is a block diagram illustrating a wireless charging device according to an example embodiment. As shown in fig. 6, the apparatus includes: the apparatus may include: the first emission driving unit 510, the second emission driving unit 520, and the recognition charging unit 530 may further include: a configuration unit 540 and a control unit 550.
The configuration unit 540 may configure and store the operating frequency range according to the resonant frequency of the transmitting coil and the required adaptive distance, which may be (f, f1, f2 … fn), wherein each operating frequency may be arranged from small to large, i.e., f is minimum and fn is maximum.
In this way, the first transmission driving unit 510 polls each of the operating frequencies in the operating frequency range at a set period in order from small to large, determines the polled operating frequency as the current operating frequency, and then controls the transmission coil to transmit the analog pulse at the current operating frequency.
When the variation value of the electrical characteristic parameter value corresponding to the transmitting coil satisfies the setting condition in the transmitting period of the analog pulse, the second transmitting driving unit 520 may control the transmitting coil to transmit the digital pulse at the current operating frequency. Accordingly, the identification charging unit 530 may perform identification of the charging load according to the received feedback signal of the digital pulse, and wirelessly charge the identified charging load.
While recognizing that the charging unit 530 performs the charging process, the control unit 550 may control the first transmission driving unit 510 to stop polling each operating frequency in the operating frequency range. Therefore, the flow is saved, and the occupation of resources is reduced.
Therefore, in this embodiment, the working frequency can be polled from among f, f1, and f2 … fn, so that the energy of the transmitted analog pulse is different, and the areas of the corresponding transmission interfaces are also different, and thus, the charging loads at different distances can be identified, that is, the wireless charging transmitting device can adaptively identify the wireless loads at different distances to perform wireless charging, and thus, the charging loads can be wirelessly charged in multiple scenes, and the application range and flexibility of wireless charging are improved.
In an embodiment of the present invention, an apparatus for wireless charging is provided, where the apparatus is used for a wireless charging transmitting device, and the apparatus includes:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to:
polling each working frequency in a working frequency range at a set period, and controlling a transmitting coil to transmit an analog pulse at the polled current working frequency, wherein the working frequency range comprises two or more working frequencies;
if the change value of the electrical characteristic parameter value corresponding to the transmitting coil is determined to meet the set condition in the transmitting period of the analog pulse, controlling the transmitting coil to transmit the digital pulse at the current working frequency;
and identifying a charging load according to the received feedback signal of the digital pulse, and wirelessly charging the identified charging load.
According to a fourth aspect of embodiments of the present invention, there is provided a computer readable storage medium having stored thereon computer instructions which, when executed by a processor, implement the steps of the above-described method.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It is to be understood that the present invention is not limited to the procedures and structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (8)
1. A method of wireless charging, comprising:
polling each working frequency in a working frequency range at a set period, and controlling a transmitting coil to transmit an analog pulse at the polled current working frequency, wherein the working frequency range comprises two or more working frequencies;
if the change value of the electrical characteristic parameter value corresponding to the transmitting coil is determined to meet the set condition in the transmitting period of the analog pulse, controlling the transmitting coil to transmit the digital pulse at the current working frequency;
according to the received feedback signal of the digital pulse, identifying a charging load, and wirelessly charging the identified charging load;
and configuring the working frequency range according to the resonance frequency of the transmitting coil and the set distance.
2. The method of claim 1, wherein the determining that the variation of the electrical characteristic parameter value corresponding to the transmitting coil satisfies a set condition comprises:
when the first change value of the current value corresponding to the transmitting coil is larger than zero, determining that the change value of the electrical characteristic parameter value meets a set condition;
when a second variation value of the voltage value corresponding to the transmitting coil is smaller than zero, determining that the variation value of the electrical characteristic parameter value meets a set condition;
or when the first change value is larger than zero and the second change value is smaller than zero, determining that the change value of the electrical characteristic parameter value meets the set condition.
3. The method of claim 1 or 2, wherein said controlling the transmit coil to transmit digital pulses at said current operating frequency further comprises:
ceasing polling each operating frequency in the operating frequency range.
4. An apparatus for wireless charging, comprising:
the first transmission driving unit is used for polling each working frequency in a working frequency range in a set period and controlling the transmission coil to transmit an analog pulse at the polled current working frequency, wherein the working frequency range comprises two or more working frequencies;
the second transmitting driving unit is used for controlling the transmitting coil to transmit digital pulses at the current working frequency if the change value of the electrical characteristic parameter value corresponding to the transmitting coil is determined to meet the set condition in the transmitting period of the analog pulses;
the identification charging unit is used for identifying a charging load according to the received feedback signal of the digital pulse and wirelessly charging the identified charging load;
the device further comprises: and the configuration unit is used for configuring the working frequency range according to the resonance frequency of the transmitting coil and the set distance.
5. The apparatus of claim 4,
the second transmitting driving unit is specifically configured to determine that a variation value of the electrical characteristic parameter value satisfies a set condition when a first variation value of a current value corresponding to the transmitting coil is greater than zero; when a second variation value of the voltage value corresponding to the transmitting coil is smaller than zero, determining that the variation value of the electrical characteristic parameter value meets a set condition; or when the first change value is larger than zero and the second change value is smaller than zero, determining that the change value of the electrical characteristic parameter value meets the set condition.
6. The apparatus of claim 4 or 5, wherein the apparatus further comprises:
and the control unit is used for stopping polling each working frequency in the working frequency range after the transmitting coil is controlled to transmit the digital pulse at the current working frequency.
7. An apparatus for wireless charging, configured to wirelessly charge a transmitting device, comprising:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to:
polling each working frequency in a working frequency range at a set period, and controlling a transmitting coil to transmit an analog pulse at the polled current working frequency, wherein the working frequency range comprises two or more working frequencies;
if the change value of the electrical characteristic parameter value corresponding to the transmitting coil is determined to meet the set condition in the transmitting period of the analog pulse, controlling the transmitting coil to transmit the digital pulse at the current working frequency;
according to the received feedback signal of the digital pulse, identifying a charging load, and wirelessly charging the identified charging load;
and configuring the working frequency range according to the resonance frequency of the transmitting coil and the set distance.
8. A computer-readable storage medium having stored thereon computer instructions, which when executed by a processor, carry out the steps of the method of any one of claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810385413.4A CN108599392B (en) | 2018-04-26 | 2018-04-26 | Wireless charging method and device and computer readable storage medium |
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