CN106786930B - Multi-device wireless charging method and system - Google Patents

Multi-device wireless charging method and system Download PDF

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CN106786930B
CN106786930B CN201611255307.1A CN201611255307A CN106786930B CN 106786930 B CN106786930 B CN 106786930B CN 201611255307 A CN201611255307 A CN 201611255307A CN 106786930 B CN106786930 B CN 106786930B
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charging
mobile device
mobile
mobile equipment
satisfy
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CN106786930A (en
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江琪
赵毓斌
须成忠
王晓东
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Shenzhen Institute of Advanced Technology of CAS
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Shenzhen Institute of Advanced Technology of CAS
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    • H02J7/025—
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially

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Abstract

The invention provides a multi-device wireless charging method and a multi-device wireless charging system, wherein the method comprises the following steps: sensing whether a mobile device is in a charging area of a charging panel; when the mobile equipment is sensed in the charging area of the charging panel, further judging whether the mobile equipment is charged; when the mobile equipment is judged to be charged, further judging whether the mobile equipment leaves a charging area; when judging that no mobile equipment leaves the charging area, further judging whether the mobile equipment is newly accessed; when the mobile equipment is judged to be newly accessed, the charging panel starts charging initialization, current data of the mobile equipment, sent by the mobile equipment through Bluetooth, are obtained again, a charging mode is selected according to the obtained current data of the mobile equipment, the charging mode selected by the access and the leaving of the mobile equipment is given, and the priority and different charging modes are divided according to the current data of the mobile equipment, sent by the mobile equipment through Bluetooth.

Description

Multi-device wireless charging method and system
Technical Field
The invention relates to the technical field of magnetic resonance wireless charging, in particular to a multi-device wireless charging method and system.
Background
Currently, the wireless charging technology mainly includes four basic modes, i.e., an electromagnetic induction mode, a magnetic resonance mode, an electric field coupling mode, and a radio wave mode. Currently, the most mature and common is electromagnetic induction type, and the technology thereof is to apply the electromagnetic induction principle, wherein alternating current flows through a transmitting coil to generate a changing magnetic field, and the transmitting coil generates current under the changing magnetic field, so as to charge a receiving device. The magnetic resonance type technology also applies the electromagnetic induction principle, and the same transmitting and receiving frequency is used for achieving the resonance effect so as to enhance the transmission efficiency. The electric field coupling technology principle is that transmitted electric energy is transferred to a receiver through an electric field, and the electric energy is transmitted by using an induced electric field generated by two groups of asymmetric dipoles coupled in the vertical direction. The principle of the radio wave technology is to convert electromagnetic waves into current and transmit the current through a circuit, but the radio wave technology has the defects of small transmission distance, low conversion efficiency, large radiation and the like.
The prior art is as follows: the principle of various charging panels such as a three-star vertical wireless charging panel and an Apple watch wireless charger is that electromagnetic induction charging is basically performed, charging equipment and the charging panel need to be attached, along with the continuous development and evolution of wireless charging technology, the research direction of various large companies is changed into that the charging panel can charge multiple mobile equipment in any direction and in a proper distance, and the existing attached wireless charging product cannot meet the requirements of people.
The magnetic resonance wireless charging technology is one of the mainstream technologies of wireless charging, and has the advantages of long transmission distance, high efficiency and the like. With the release of the WPC1.2 specification, the current market starts to be changed from a magnetic induction technology to a magnetic resonance wireless charging technology, which mainly charges mobile smart devices, wearable devices, low-power small devices, and the like. The magnetic resonance wireless charging technology product can be manufactured into a charging panel (containing single or multiple coil transmission), can charge multiple receiving devices simultaneously, and becomes the future development direction of the wireless charging market. The charging efficiency of a charging receiver device is closely related to the position of the charging plate, which is a transmitter made up of a plurality of coils, each coil having a different degree of magnetic induction from the receiver device in the active charging area. In order to better manage the multi-device wireless charging, a multi-device wireless charging scheme needs to be provided, so that the wireless charging system is more intelligent, efficient and safe.
Since the multi-device wireless charging technology is researched at home and abroad in these years, the application fields in the future are mainly mobile intelligent devices, wearable devices, small low-power devices and the like. From the perspective of a multi-device charging scheme by a multi-coil charging plate, the following papers and patents exist:
an example of charging multiple Devices with a multi-coil charging plate under magnetic resonance is described in the paper (Wireless Power Hotspot at Charges All of the raw Devices), where the coil frequencies of the charging plate (transmitting) and the device receiving the charging are the same to achieve resonance to improve charging efficiency. In the paper, the transmission and the reception adopt the information transfer by the aid of the intra-band communication, each channel is estimated, and then the voltage of a transmitting coil is controlled by the aid of a maximum power transmission algorithm mentioned in the paper. This example gives our research reference directions and demonstrates the feasibility of multi-device wireless charging, but there are many scenarios on charging system management and methods that require our further research and exploration.
Patent (EP2654049) is a solution that discloses a multi-device wireless charging system. By dividing the periphery of the charging pad into a charging area, a possible charging area and an impossible charging area, the mobile devices in the charging area are grouped into one group, and the mobile devices in the possible charging area are grouped into one group, which is a charging mode. Another mode is to group devices in the charging pad frequency region and charge mobile devices of different frequencies in a time-division manner. Charging selection is also performed according to the electric quantity of the mobile equipment. The mobile device charging method has the advantages that the charging of multiple devices is divided into the priority levels, the proper charging scheme is selected according to different conditions, the charging efficiency is reduced by considering the time division charging of the mobile devices with different frequencies, and the specific priority level problem is not solved when the mobile devices meet various conditions.
Because a single wireless charging technology has been developed more maturely, many companies have been studied at home and abroad in the multi-device wireless charging technology, and the existing papers and patents only propose some simple solutions on the charging solutions, but do not provide a good system and a set of solutions.
Disclosure of Invention
The present invention is directed to overcome the above-mentioned deficiencies of the prior art, and provides a multi-device wireless charging method and system based on a multi-device wireless charging technology, which aims to enable a mobile device to select a proper charging mode within a charging range of a charging pad according to a state of the charging pad, a state of electric quantity of the charging device, a position of the charging device, and access and exit of the mobile device, so as to protect the charging pad and the mobile device, improve charging efficiency, and achieve intelligent charging.
The invention is realized in such a way that a multi-device wireless charging method comprises the following steps:
sensing whether a mobile device is in a charging area of a charging panel;
when the mobile equipment is sensed to be in the charging area of the charging plate, further judging whether the mobile equipment is in charging;
when the mobile equipment is judged to be charged, further judging whether the mobile equipment leaves a charging area;
when judging that no mobile equipment leaves the charging area, further judging whether the mobile equipment is newly accessed;
when the mobile equipment is judged to be newly accessed, the charging panel starts charging initialization and acquires the current data of the mobile equipment sent by the mobile equipment through Bluetooth again, wherein the current data of the mobile equipment comprises the electric quantity, the temperature and the charging current value of a battery of the mobile equipment;
and selecting a charging mode according to the acquired current data of the mobile equipment, wherein the charging mode comprises a safe mode, an emergency mode, a quick charging mode and a power maximization transmission mode.
Further, when the mobile device is sensed in the charging area of the charging panel, the step of further determining whether the mobile device is charging further includes:
when no mobile device is judged to be charged, the charging panel enters a sleep state.
Further, when it is determined that the mobile device is charging, the step of further determining whether the mobile device leaves the charging area further includes:
and when the mobile equipment leaves the charging area, starting charging initialization by the charging panel, and re-acquiring the current data of the mobile equipment, which is sent by the mobile equipment through Bluetooth, so as to select a charging mode according to the acquired current data of the mobile equipment.
Further, when it is determined that no mobile device leaves the charging area, the step of further determining whether the mobile device is a newly accessed mobile device further includes:
and when the mobile device is judged not to be newly accessed, acquiring the current data of the mobile device, which is sent by the mobile device through Bluetooth, so as to select a charging mode according to the acquired current data of the mobile device.
Further, the step of selecting a charging mode according to the acquired current data of the mobile device specifically includes:
judging the temperature T of the charging plateiWhether or not T is satisfiedi>T0，If so, entering a safe mode, the charging pad executing a first power distribution algorithm that evenly distributes voltage to each coil on the charging pad, wherein T0A temperature threshold at which high power transfer of electrical energy to the charging plate results in heating;
if the temperature T of the charging plateiDoes not satisfy Ti>T0Then further judging the temperature T of the mobile equipmentRWhether or not T is satisfiedR>T1，If so, entering a safe mode, the charging pad executing a first power distribution algorithm that evenly distributes voltage to each coil on the charging pad, wherein T1A temperature threshold for the mobile device that causes heating of a coil or battery or voltage regulation module in case of some fast charging;
if the temperature T of the mobile deviceRDoes not satisfy TR>T1，Further judging the electric quantity W of the mobile equipmentiWhether or not to satisfy Wi<W0If yes, entering into emergency mode, executing second power distribution algorithm giving priority to charging for one or more mobile devices, wherein W0A low battery threshold set for a charging pad to preferentially charge the mobile device;
if the electric quantity W of the mobile equipmentiDoes not satisfy Wi<W0，Further determining the charging current I of the mobile deviceiWhether or not to satisfy Ii>ImIf yes, further judging the current electric quantity W of the mobile equipmentiWhether or not to satisfy Wi>W1If yes, entering a power maximization transmission mode, and executing a third power distribution algorithm for distributing corresponding voltages to each coil on the charging plate so as to maximize the received power of the mobile equipment, wherein ImA current threshold value W for the mobile device to be attached to the charging pad1An electric quantity threshold value for the mobile equipment under the condition that quick charging or charging is not required;
if the charging current I of the mobile deviceiDoes not satisfy Ii>ImEntering a power maximization transmission mode, and executing a third power distribution algorithm for distributing corresponding voltages to coils on the charging plate so that the received power of the mobile equipment is maximized;
if the current electric quantity W of the mobile equipmentiDoes not satisfy Wi>W1Then enter a fast charge mode and execute a fourth power allocation algorithm that gives a fast charge to one or more of the mobile devices.
Correspondingly, the invention also provides a multi-device wireless charging system, which comprises a charging panel provided with a plurality of coils and a plurality of mobile devices, wherein the charging panel comprises:
the sensing module is used for sensing whether a mobile device is in a charging area of the charging panel or not;
the first judgment module is used for further judging whether mobile equipment is charged or not when the induction module senses that the mobile equipment is in the charging area of the charging plate;
the second judging module is used for further judging whether the mobile equipment leaves the charging area or not when the first judging module judges that the mobile equipment is charged;
a third determining module, configured to further determine whether the mobile device is a newly accessed mobile device when the second determining module determines that no mobile device leaves the charging area;
the charging initialization module is used for starting charging initialization when the third judgment module judges that the mobile device is newly accessed;
the acquisition module is used for reacquiring the current data of the mobile equipment, which is sent by the mobile equipment through Bluetooth, after the charging initialization module starts the charging initialization, wherein the current data of the mobile equipment comprises the electric quantity, the temperature and the charging current value of a battery of the mobile equipment;
the selection module is used for selecting a charging mode according to the current data of the mobile equipment acquired by the acquisition module, wherein the charging mode comprises a safety mode, an emergency mode, a quick charging mode and a power maximization transmission mode.
Further, when the first judging module judges that no mobile device is charged, the charging panel enters a sleep state.
Further, when the second determination module determines that the mobile device leaves the charging area, the charging panel starts charging initialization and reacquires the current data of the mobile device sent by the mobile device through bluetooth, so as to select a charging mode according to the acquired current data of the mobile device.
Further, when the third judgment module judges that the mobile device is not a newly accessed mobile device, the current data of the mobile device, which is sent by the mobile device through bluetooth, is acquired, so that a charging mode is selected according to the acquired current data of the mobile device.
Further, the selection module further comprises:
a first judging unit, configured to judge a temperature T of the charging pad according to the current data of the mobile device acquired by the acquiring moduleiWhether or not T is satisfiedi>T0；
A first selection unit for determining the temperature T of the charging plate at the first determination unitiSatisfy Ti>T0When a safe mode is selected, the charging plate executes a power distribution algorithm for evenly distributing voltage to each coil on the charging plate, wherein T0A temperature threshold at which high power transfer of electrical energy to the charging plate results in heating;
a second determination unit for determining the temperature T of the charging plate at the first determination unitiDoes not satisfy Ti>T0Then further judging the temperature T of the mobile equipmentRWhether or not T is satisfiedR>T1；
A second selection unit that selects the second menuIs used for judging the temperature T of the mobile equipment in the second judging unitRSatisfy TR>T1When the mobile device is in a safe mode, the charging board executes a power distribution algorithm for evenly distributing voltage to each coil on the charging board, wherein T1 is a temperature threshold value of the mobile device, which causes the coil or the battery or the voltage stabilizing module to generate heat under certain fast charging conditions;
a third determination unit configured to determine the temperature T of the mobile device at the second determination unitRDoes not satisfy TR>T1Then further judging the electric quantity W of the mobile equipmentiWhether or not to satisfy Wi<W0；
A third selection unit, configured to determine the electric quantity W of the mobile device at the third determination unitiSatisfies Wi<W0When the mobile device is in the emergency mode, the execution power distribution algorithm giving priority to charging to one or more mobile devices is selected, wherein W0A low battery threshold set for the charging pad to charge the mobile device preferentially;
a fourth judging unit, configured to judge the electric quantity W of the mobile device at the third judging unitiDoes not satisfy Wi<W0If so, further determining the charging current I of the mobile deviceiWhether or not to satisfy Ii>Im；
A fourth selecting unit configured to determine the charging current I of the mobile device when the fourth determining unit determines that the mobile device is in the charging current IiDoes not satisfy Ii>ImWhen the mobile equipment is in a maximum power transmission mode, executing an execution power distribution algorithm for distributing corresponding voltage to each coil of a charging plate so as to maximize the received power of the mobile equipment;
a fifth judging unit for judging the charging current I of the mobile device when the fourth judging unit judgesiSatisfy Ii>ImThen further determining the current of the mobile deviceElectric quantity WiWhether or not to satisfy Wi>W1Wherein, ImA current threshold for a conformable charging of the mobile device on the charging pad;
a fifth selection unit, configured to determine the current electric quantity W of the mobile device when the fifth determination unit determines that the current electric quantity W of the mobile device is not equal to the current electric quantity WiSatisfies Wi>W1Then, selecting to enter a power maximization transmission mode, and executing an execution power distribution algorithm for distributing corresponding voltages to each coil on the charging plate so as to maximize the received power of the mobile device, wherein W is1An electric quantity threshold value for the mobile equipment under the condition that quick charging or charging is not required;
the fifth selecting unit is further configured to determine the current electric quantity W of the mobile device when the fifth determining unit determines that the current electric quantity W of the mobile device isiDoes not satisfy Wi>W1And selecting to enter a quick charging mode, and executing an execution power distribution algorithm giving quick charging to one or more mobile devices.
The embodiment of the invention has the following beneficial effects:
whether a mobile device is charged, whether a new mobile device is accessed into or out of a charging area is judged by sensing the mobile device, if the mobile device is accessed into or out of the charging area, charging initialization average distribution voltage is started to a plurality of coils on a charging plate to obtain current data of the mobile device, and a corresponding charging mode is selected according to the current data of the mobile device sent by the mobile device through Bluetooth The charging efficiency is improved and the intelligent charging is realized.
Drawings
Fig. 1 is a flowchart illustrating a multi-device wireless charging method according to a first embodiment of the present invention.
Fig. 2 is a flowchart illustrating a multi-device wireless charging method according to a second embodiment of the present invention.
Fig. 3 is a schematic flow chart of an embodiment of step 105 in fig. 1.
Fig. 4 is a schematic structural diagram of a multi-device wireless charging system according to a third embodiment of the present invention.
Fig. 5 is a schematic structural view of the charging plate in fig. 4.
Fig. 6 is a schematic diagram of a structure of a selection module of the charging pad of fig. 5.
Fig. 7 is an operation diagram of a multi-device wireless charging system according to a fourth embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example one
Referring to fig. 1, fig. 1 is a schematic flowchart illustrating a multi-device wireless charging method according to a first embodiment of the present invention. As shown in fig. 1, the multi-device wireless charging method includes:
s101, sensing whether a mobile device exists in a charging area of a charging panel;
s102, when the mobile equipment is sensed to be in the charging area of the charging panel, further judging whether the mobile equipment is in the charging state;
as an optional implementation manner, when it is sensed that there is a mobile device in the charging area of the charging pad, the step of further determining whether there is a mobile device in the charging process further includes:
when no mobile device is judged to be charged, the charging panel enters a sleep state.
S103, when the mobile equipment is judged to be charged, further judging whether the mobile equipment leaves a charging area;
as an optional implementation manner, when it is determined that there is a mobile device in the charging area, the step of further determining whether there is a mobile device leaving the charging area further includes:
and when the mobile equipment leaves the charging area, starting charging initialization by the charging panel, and re-acquiring the current data of the mobile equipment, which is sent by the mobile equipment through Bluetooth, so as to select a charging mode according to the acquired current data of the mobile equipment.
S104, when judging that no mobile equipment leaves the charging area, further judging whether the mobile equipment is newly accessed;
as an optional implementation manner, when it is determined that no mobile device leaves the charging area, the step of further determining whether the mobile device is a newly-accessed mobile device further includes:
and when the mobile device is judged not to be newly accessed, acquiring the current data of the mobile device, which is sent by the mobile device through Bluetooth, so as to select a charging mode according to the acquired current data of the mobile device.
S105, when the mobile device is judged to be newly accessed, the charging panel starts charging initialization and obtains current data of the mobile device sent by the mobile device through Bluetooth again, wherein the current data of the mobile device comprises the electric quantity, the temperature and the charging current value of a battery of the mobile device;
and S106, selecting a charging mode according to the acquired current data of the mobile equipment, wherein the charging mode comprises a safe mode, an emergency mode, a quick charging mode and a power maximization transmission mode.
As an optional implementation manner, the step of selecting a charging mode according to the acquired current data of the mobile device specifically includes:
judging the temperature T of the charging plateiWhether or not T is satisfiedi>T0，If so, entering a safe mode, the charging pad executing a first power distribution algorithm that evenly distributes voltage to each coil on the charging pad, wherein T0For charging the batteryA temperature threshold value of heat generated by high-power transmission of electric energy by the board;
if the temperature T of the charging plateiDoes not satisfy Ti>T0Then further judging the temperature T of the mobile equipmentRWhether or not T is satisfiedR>T1，If so, entering a safe mode, the charging pad executing a first power distribution algorithm that evenly distributes voltage to each coil on the charging pad, wherein T1A temperature threshold for the mobile device that causes heating of a coil or battery or voltage regulation module in case of some fast charging;
if the temperature T of the mobile deviceRDoes not satisfy TR>T1，Further judging the electric quantity W of the mobile equipmentiWhether or not to satisfy Wi<W0If yes, entering into emergency mode, executing second power distribution algorithm giving priority to charging for one or more mobile devices, wherein W0A low battery threshold set for a charging pad to preferentially charge the mobile device;
if the electric quantity W of the mobile equipmentiDoes not satisfy Wi<W0，Further determining the charging current I of the mobile deviceiWhether or not to satisfy Ii>ImIf yes, further judging the current electric quantity W of the mobile equipmentiWhether or not to satisfy Wi>W1If yes, entering a power maximization transmission mode, and executing a third power distribution algorithm for distributing corresponding voltages to each coil on the charging plate so as to maximize the received power of the mobile equipment, wherein ImA current threshold value W for the mobile device to be attached to the charging pad1An electric quantity threshold value for the mobile equipment under the condition that quick charging or charging is not required;
if the charging current I of the mobile deviceiDoes not satisfy Ii>ImEntering a power maximization transmission mode, and executing a third power distribution algorithm for distributing corresponding voltages to coils on the charging plate so that the received power of the mobile equipment is maximized;
if soThe current electric quantity W of the mobile equipmentiDoes not satisfy Wi>W1Then enter a fast charge mode and execute a fourth power allocation algorithm that gives a fast charge to one or more of the mobile devices.
In the embodiment of the invention, whether the mobile equipment is charged, whether new mobile equipment is accessed into or leaves a charging area is judged by sensing the mobile equipment, if the mobile equipment is accessed into or leaves, the charging initialization average distribution voltage is started to a plurality of coils on the charging panel to obtain the current data of the mobile equipment, and the corresponding charging mode is selected according to the current data of the mobile equipment, which is sent by the mobile equipment through Bluetooth, so that the mobile equipment can select the proper charging mode according to the charging panel state, the charging equipment electric quantity condition, the charging equipment position, the access and leaving conditions of the mobile equipment and the like in the charging range of the charging panel, thereby achieving the purposes of protecting the charging panel and the mobile equipment, improving the charging efficiency and intelligently charging.
Example two
Referring to fig. 2, fig. 2 is a flowchart illustrating a multi-device wireless charging method according to a second embodiment of the present invention.
S201, sensing whether a mobile device exists in a charging area of a charging panel;
s202, when the mobile equipment is sensed to be in the charging area of the charging panel, further judging whether the mobile equipment is in the charging state; when it is determined that no mobile device is being charged, the process proceeds to step S209.
S203, when the mobile equipment is judged to be charged, further judging whether the mobile equipment leaves a charging area; when it is determined that the mobile device leaves the charging area, the process proceeds to step S208.
S204, when judging that no mobile equipment leaves the charging area, further judging whether the mobile equipment is newly accessed; when it is determined that the mobile device is not a newly accessed mobile device, the process proceeds to step S207.
S205, when the mobile device is judged to be newly accessed, the charging panel starts charging initialization and obtains current data of the mobile device sent by the mobile device through Bluetooth again, wherein the current data of the mobile device comprises the electric quantity, the temperature and the charging current value of a battery of the mobile device;
s206, selecting a charging mode according to the acquired current data of the mobile equipment, wherein the charging mode comprises a safe mode, an emergency mode, a quick charging mode and a power maximization transmission mode;
s207, acquiring current data of the mobile equipment, which is sent by the mobile equipment through Bluetooth, so as to select a charging mode according to the acquired current data of the mobile equipment;
s208, starting charging initialization by the charging panel, and acquiring current data of the mobile equipment, which is sent by the mobile equipment through Bluetooth, so as to select a charging mode according to the acquired current data of the mobile equipment;
s209, the charging pad enters a sleep state.
As an optional implementation manner, the step of selecting a charging mode according to the acquired current data of the mobile device specifically includes:
judging the temperature T of the charging plateiWhether or not T is satisfiedi>T0，If so, entering a safe mode, the charging pad executing a first power distribution algorithm that evenly distributes voltage to each coil on the charging pad, wherein T0A temperature threshold at which high power transfer of electrical energy to the charging plate results in heating;
if the temperature T of the charging plateiDoes not satisfy Ti>T0Then further judging the temperature T of the mobile equipmentRWhether or not T is satisfiedR>T1，If so, entering a safe mode, the charging pad executing a first power distribution algorithm that evenly distributes voltage to each coil on the charging pad, wherein T1A temperature threshold for the mobile device that causes heating of a coil or battery or voltage regulation module in case of some fast charging;
if the temperature T of the mobile deviceRDoes not satisfy TR>T1，Further judging the electric quantity W of the mobile equipmentiWhether or not to satisfy Wi<W0If yes, entering into emergency mode, executing second power distribution algorithm giving priority to charging for one or more mobile devices, wherein W0A low battery threshold set for a charging pad to preferentially charge the mobile device;
if the electric quantity W of the mobile equipmentiDoes not satisfy Wi<W0，Further determining the charging current I of the mobile deviceiWhether or not to satisfy Ii>ImIf yes, further judging the current electric quantity W of the mobile equipmentiWhether or not to satisfy Wi>W1If yes, entering a power maximization transmission mode, and executing a third power distribution algorithm for distributing corresponding voltages to each coil on the charging plate so as to maximize the received power of the mobile equipment, wherein ImA current threshold value W for the mobile device to be attached to the charging pad1An electric quantity threshold value for the mobile equipment under the condition that quick charging or charging is not required;
if the charging current I of the mobile deviceiDoes not satisfy Ii>ImEntering a power maximization transmission mode, and executing a third power distribution algorithm for distributing corresponding voltages to coils on the charging plate so that the received power of the mobile equipment is maximized;
if the current electric quantity W of the mobile equipmentiDoes not satisfy Wi>W1Then enter a fast charge mode and execute a fourth power allocation algorithm that gives a fast charge to one or more of the mobile devices.
In the embodiment of the invention, whether the mobile equipment is charged, whether new mobile equipment is accessed into or leaves a charging area is judged by sensing the mobile equipment, if the mobile equipment is accessed into or leaves, the charging initialization average distribution voltage is started to a plurality of coils on the charging panel to obtain the current data of the mobile equipment, and the corresponding charging mode is selected according to the current data of the mobile equipment, which is sent by the mobile equipment through Bluetooth, so that the mobile equipment can select the proper charging mode according to the charging panel state, the charging equipment electric quantity condition, the charging equipment position, the access and leaving conditions of the mobile equipment and the like in the charging range of the charging panel, thereby achieving the purposes of protecting the charging panel and the mobile equipment, improving the charging efficiency and intelligently charging.
EXAMPLE III
Referring to fig. 3, fig. 3 is a schematic flowchart of an embodiment of the charging mode selection in step 105 in fig. 1, which includes the following steps:
firstly, the temperature T of the charging plate is judgediWhether or not T is satisfiedi>T0Step S300, if yes, entering the safety mode of step S306, and the charging board executing the first power distribution algorithm of step S307 for equally distributing the voltage to each coil on the charging board, wherein T is0A temperature threshold at which high power transfer of electrical energy to the charging plate results in heating;
if the temperature T of the charging plateiDoes not satisfy Ti>T0Then entering into the judgment of the temperature T of the mobile equipmentRWhether or not T is satisfiedR>T1If yes, the method proceeds to the safety mode of step S306, and the charging pad performs the first power distribution algorithm of step S307 for evenly distributing the voltage to each coil on the charging pad, where T is1A temperature threshold for the mobile device that causes heating of a coil or battery or voltage regulation module in case of some fast charging; if the temperature T of the mobile deviceRDoes not satisfy TR>T1，Entering into the judgment of the electric quantity W of the mobile equipmentiWhether or not to satisfy Wi<W0Step S302, if yes, the method proceeds to the emergency mode of step S308, and a second power allocation algorithm for giving priority to charging to one or more mobile devices is executed in step S309, where W is0A low battery threshold set for a charging pad to preferentially charge the mobile device;
if the electric quantity W of the mobile equipmentiDoes not satisfy Wi<W0，Entering into judging the charging current I of the mobile equipmentiWhether or not to satisfy Ii>ImStep S303, if yes, determining the current electric quantity W of the mobile deviceiWhether or not to satisfy Wi>W1Step S304, if yes, entering the power maximization transmission mode of step S310, and executing a third power allocation algorithm of step S311 to allocate corresponding voltages to the coils on the charging pad, so that the received power of the mobile device is maximized, wherein ImA current threshold value W for the mobile device to be attached to the charging pad1An electric quantity threshold value for the mobile equipment under the condition that quick charging or charging is not required; if the charging current I of the mobile deviceiDoes not satisfy Ii>ImThen, the mobile device enters the power maximization transmission mode of step S310, and executes a third power allocation algorithm of step S311 to allocate corresponding voltages to the coils on the charging pad, so that the received power of the mobile device is maximized;
if the current electric quantity W of the mobile equipmentiDoes not satisfy Wi>W1Then, the method goes to the fast charging mode of step S312, and executes a fourth power allocation algorithm of step S313 to give fast charging to one or more of the mobile devices.
In this embodiment, a corresponding charging mode is selected according to current data of the mobile device sent by the mobile device, so that the mobile device can select a proper charging mode within a charging range of the charging pad according to a state of the charging pad, an electric quantity condition of the charging device, a position of the charging device, access and exit conditions of the mobile device, and the like, thereby achieving the purposes of protecting the charging pad and the mobile device, improving charging efficiency and intelligently charging.
Example four
Referring to fig. 4, fig. 4 is a schematic structural diagram of a multi-device wireless charging system according to a third embodiment of the present invention. As shown in fig. 4, the multi-device wireless charging system includes a charging panel 1 provided with a plurality of coils 10 and a plurality of mobile devices 2, wherein, as shown in fig. 5, the charging panel 1 includes:
the sensing module 11 is used for sensing whether the mobile device 2 exists in the charging area of the charging panel 1 or not;
a first judging module 12, where the first judging module 12 is configured to further judge whether the mobile device 2 is charging when the sensing module 11 senses that the mobile device 2 is in the charging area of the charging panel 1;
a second judging module 13, where the second judging module 13 is configured to further judge whether the mobile device 2 leaves the charging area when the first judging module 12 judges that the mobile device 2 is charging;
a third determining module 14, where the third determining module 14 is configured to further determine whether the mobile device 2 is a newly accessed mobile device 2 when the second determining module 13 determines that no mobile device 2 leaves the charging area;
a charging initialization module 15, where the charging initialization module 15 is configured to start charging initialization when the third determination module 14 determines that the mobile device 2 is newly accessed;
the obtaining module 16 is configured to obtain current data of the mobile device 2 sent by the mobile device 2 through bluetooth again after the charging initialization module 15 starts charging initialization, where the current data of the mobile device 2 includes an electric quantity, a temperature, and a charging current value of a battery of the mobile device;
a selecting module 17, where the selecting module 17 is configured to select a charging mode according to the current data of the mobile device 2 acquired by the acquiring module 16, where the charging mode includes a safety mode, an emergency mode, a fast charging mode, and a power maximization transmission mode.
When the first judging module 12 judges that no mobile device 2 is charging, the charging panel 1 enters a sleep state.
When the second determining module 13 determines that the mobile device leaves the charging area, the charging panel 1 starts charging initialization, and obtains the current data of the mobile device 2 sent by the mobile device 2 through bluetooth again, so as to select a charging mode according to the obtained current data of the mobile device 2.
When the third determining module 14 determines that the mobile device 2 is not a newly accessed mobile device 2, the current data of the mobile device 2 sent by the mobile device 2 through bluetooth is acquired, so that a charging mode is selected according to the acquired current data of the mobile device 2.
As shown in fig. 6, the selecting module 17 further includes:
a first determining unit 170, where the first determining unit 170 is configured to determine the temperature T of the charging plate 1 according to the current data of the mobile device 2 acquired by the acquiring module 16iWhether or not T is satisfiedi>T0；
A first selecting unit 171, the first selecting unit 171 being configured to determine the temperature T of the charging plate 1 at the first determining unit 170iSatisfy Ti>T0When the safe mode is selected, the charging pad 1 executes a first power distribution algorithm that distributes the voltage evenly to the individual coils on the charging pad 1, where T0A temperature threshold at which high power transmission of electric energy to the charging pad 1 causes heat generation;
a second determination unit 172, the second determination unit 172 being configured to determine the temperature T of the charging plate 1 at the first determination unit 170iDoes not satisfy Ti>T0Then further determining the temperature T of the mobile device 2RWhether or not T is satisfiedR>T1；
A second selecting unit 173, wherein the second selecting unit 173 is used for judging the temperature T of the mobile device 2 in the second judging unit 172RSatisfy TR>T1When the mobile device 2 is in a fast charging state, the mobile device selects to enter a safe mode, and the charging pad 1 executes a first power distribution algorithm for evenly distributing voltage to each coil on the charging pad 1, wherein T1 is a temperature threshold value for the mobile device 2 to cause the coil or the battery or the voltage stabilizing module to generate heat under certain fast charging conditions;
a third judging unit 174, wherein the third judging unit 174 is configured to judge the temperature T of the mobile device 2 at the second judging unit 172RDoes not satisfy TR>T1Then, the electric quantity W of the mobile device 2 is further judgediWhether or not to satisfy Wi<W0；
A third selecting unit 175, wherein the third selecting unit 175 is configured to determine the third determining unit 174Electric quantity W of mobile device 2iSatisfies Wi<W0Then, the mobile device 2 is selected to enter into the emergency mode, and a second power allocation algorithm is executed to give priority to charging to one or more mobile devices 2, where W0A low battery threshold set for the charging pad 1 to charge the mobile device 2 preferentially;
a fourth judging unit 176, wherein the fourth judging unit 176 is configured to judge the power amount W of the mobile device 2 at the third judging unit 174iDoes not satisfy Wi<W0If so, further determining the charging current I of the mobile device 2iWhether or not to satisfy Ii>Im；
A fourth selecting unit 177, wherein the fourth selecting unit 177 is configured to select the charging current I of the mobile device 2 when the fourth determining unit 176 determines that the charging current I is lower than the predetermined valueiDoes not satisfy Ii>ImWhen the mobile device 2 is in the maximum power transmission mode, a third power distribution algorithm is selected to enter the maximum power transmission mode, and corresponding voltage is distributed to each coil of the charging plate, so that the received power of the mobile device 2 is maximized;
a fifth judging unit 178, wherein the fifth judging unit 178 is used for judging the charging current I of the mobile device 2 when the fourth judging unit 177iSatisfy Ii>ImThen, the current electric quantity W of the mobile device 2 is further judgediWhether or not to satisfy Wi>W1Wherein, ImA current threshold value for the mobile device 2 to be charged in a fitting manner on the charging pad 1;
a fifth selecting unit 179, wherein the fifth selecting unit 179 is used when the fifth judging unit 178 judges the current electric quantity W of the mobile device 2iSatisfies Wi>W1Then, a third power distribution algorithm is selected to enter a power maximization transmission mode, and corresponding voltages are distributed to the coils on the charging plate, so that the received power of the mobile device 2 is maximized, wherein W is1An electric quantity threshold value for the mobile device 2 under the condition that quick charging or charging is not required;
the fifth selecting unit 179 is further configured to determine the mobile device when the fifth determining unit 178 determines that the mobile device is movedCurrent amount of electricity W of standby 2iDoes not satisfy Wi>W1And then, selecting to enter a fast charging mode, and executing a fourth power distribution algorithm for giving fast charging to one or more mobile devices 2.
EXAMPLE five
Referring to fig. 7, fig. 7 is a schematic diagram illustrating an operation of a multi-device wireless charging system according to a fourth embodiment of the present invention. As shown in fig. 7, the multi-device wireless charging system includes a charging pad 1 provided with a plurality of coils 10 and 5 mobile devices (mobile device 2-1, mobile device 2-2, mobile device 2-3, mobile device 2-4, mobile device 2-5),
wherein the mobile device 2-1, the mobile device 2-2, the mobile device 2-3 and the mobile device 2-4 are in the charging zone 3 of the charging pad 1, the mobile device 2-5 is not in the charging zone 3 of the charging pad 1,
at the moment, the mobile equipment 2-5 is moved into the charging area 3, the charging panel 1 senses that the mobile equipment 2-5 is moved in, the charging panel 1 enters a charging starting initialization stage, the voltage of each coil of the charging panel 1 is evenly distributed in the state, the current position of each mobile equipment can be roughly judged, the mobile equipment end sends current data through Bluetooth, the charging panel 1 selects a corresponding charging mode according to the fed back data, firstly, whether the temperature of the charging panel 1 is normal or not is judged, the charging panel abnormally enters a safety mode, normally, then, whether the temperature of each mobile equipment is normal or not is judged, the charging panel abnormally also enters the safety mode, and the normally, then, other conditions are judged; if the electric quantity of the mobile equipment end fed back is lower than W0Assume that the power value of mobile device 2-1 is lower than W0The emergency mode is entered to preferentially charge the mobile device 2-1, and similarly, if the electric quantity of a plurality of mobile devices (the mobile device 2-1, the mobile device 2-2, the mobile device 2-3 and the mobile device 2-3) is lower than W0Preferentially charging the three mobile devices;
if the electric quantity of each mobile device is larger than W0Then, whether the charging current of the mobile equipment is larger than I is judgedmSince the mobile device 2-3 is placed on the charging panel 1 and completely attached to a coil, the current I of the mobile device 2-3 is larger than ImIf the current power of the mobile device 2-3 is not greater than W1Entering a quick charging mode to preferentially charge the mobile equipment 2-3, if the electric quantity of the mobile equipment 2-3 is more than W1Entering a power maximizing transmission mode;
if the mobile device 2-4 moves to the position of the non-charging area 3, the sensing module of the charging panel 1 senses that the mobile device 2-4 leaves, the charging panel 1 restarts the charging initialization stage, voltage is averagely distributed to each coil to obtain new data of the mobile device, and then a charging mode is selected;
due to the access of the mobile devices 2-5 and the leaving of the mobile devices 2-4, the battery power will change along with the charging time, and the position will change at any time, so the mobile devices send data through bluetooth at regular time, and the charging panel 1 reselects the charging mode according to the new data.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (8)

1. A multi-device wireless charging method is characterized by comprising the following steps:
sensing whether a mobile device is in a charging area of a charging panel;
when the mobile equipment is sensed to be in the charging area of the charging plate, further judging whether the mobile equipment is in charging;
when the mobile equipment is judged to be charged, further judging whether the mobile equipment leaves a charging area;
when judging that no mobile equipment leaves the charging area, further judging whether the mobile equipment is newly accessed;
when the mobile equipment is judged to be newly accessed, the charging panel starts charging initialization and acquires the current data of the mobile equipment sent by the mobile equipment through Bluetooth again, wherein the current data of the mobile equipment comprises the electric quantity, the temperature and the charging current value of a battery of the mobile equipment;
selecting a charging mode according to the acquired current data of the mobile equipment, wherein the charging mode comprises a safe mode, an emergency mode, a quick charging mode and a power maximization transmission mode;
the step of selecting a charging mode according to the acquired current data of the mobile device specifically includes:
judging the temperature T of the charging plateiWhether or not T is satisfiedi>T0If yes, entering a safe mode, executing a first power distribution algorithm by the charging panel for evenly distributing voltage to each coil on the charging panel, wherein T0A temperature threshold at which high power transfer of electrical energy to the charging plate results in heating;
if the temperature T of the charging plateiDoes not satisfy Ti>T0Then further judging the temperature T of the mobile equipmentRWhether or not T is satisfiedR>T1If yes, entering a safe mode, executing a first power distribution algorithm by the charging panel for evenly distributing voltage to each coil on the charging panel, wherein T1A temperature threshold for the mobile device that causes heating of a coil or battery or voltage regulation module in case of some fast charging;
if the temperature T of the mobile deviceRDoes not satisfy TR>T1Then further judging the electric quantity W of the mobile equipmentiWhether or not to satisfy Wi<W0If yes, entering into emergency mode, executing second power distribution algorithm giving priority to charging for one or more mobile devices, wherein W0A low battery threshold set for a charging pad to preferentially charge the mobile device;
if the electric quantity W of the mobile equipmentiDoes not satisfy Wi<W0，Further determining the charging current I of the mobile deviceiWhether or not to satisfy Ii>ImIf yes, further judging the current electric quantity W of the mobile equipmentiWhether or not to satisfy Wi>W1If yes, entering a power maximization transmission mode, and executing corresponding voltage distribution to each coil on the charging plate so as to facilitate the charging plate to be chargedA third power allocation algorithm for maximizing the received power of the mobile device, wherein ImA current threshold value W for the mobile device to be attached to the charging pad1An electric quantity threshold value for the mobile equipment under the condition that quick charging or charging is not required;
if the charging current I of the mobile deviceiDoes not satisfy Ii>ImEntering a power maximization transmission mode, and executing a third power distribution algorithm for distributing corresponding voltages to coils on the charging plate so that the received power of the mobile equipment is maximized;
if the current electric quantity W of the mobile equipmentiDoes not satisfy Wi>W1Then enter a fast charge mode and execute a fourth power allocation algorithm that gives a fast charge to one or more of the mobile devices.
2. The method of claim 1, wherein the step of further determining whether a mobile device is charging when a mobile device is detected in the charging area of the charging pad further comprises:
when no mobile device is judged to be charged, the charging panel enters a sleep state.
3. The multi-device wireless charging method of claim 1, wherein when it is determined that there is a mobile device in the charging area, the step of further determining whether there is a mobile device leaving the charging area further comprises:
and when the mobile equipment leaves the charging area, starting charging initialization by the charging panel, and re-acquiring the current data of the mobile equipment, which is sent by the mobile equipment through Bluetooth, so as to select a charging mode according to the acquired current data of the mobile equipment.
4. The multi-device wireless charging method of claim 1, wherein the step of further determining whether the mobile device is a newly accessed mobile device when it is determined that no mobile device leaves the charging area further comprises:
and when the mobile device is judged not to be newly accessed, acquiring the current data of the mobile device, which is sent by the mobile device through Bluetooth, so as to select a charging mode according to the acquired current data of the mobile device.
5. A multi-device wireless charging system comprises a charging panel and a plurality of mobile devices, wherein the charging panel is provided with a plurality of coils, and the charging panel comprises:
the sensing module is used for sensing whether a mobile device is in a charging area of the charging panel or not;
the first judgment module is used for further judging whether mobile equipment is charged or not when the induction module senses that the mobile equipment is in the charging area of the charging plate;
the second judging module is used for further judging whether the mobile equipment leaves the charging area or not when the first judging module judges that the mobile equipment is charged;
a third determining module, configured to further determine whether the mobile device is a newly accessed mobile device when the second determining module determines that no mobile device leaves the charging area;
the charging initialization module is used for starting charging initialization when the third judgment module judges that the mobile device is newly accessed;
the acquisition module is used for reacquiring the current data of the mobile equipment, which is sent by the mobile equipment through Bluetooth, after the charging initialization module starts the charging initialization, wherein the current data of the mobile equipment comprises the electric quantity, the temperature and the charging current value of a battery of the mobile equipment;
the selection module is used for selecting a charging mode according to the current data of the mobile equipment acquired by the acquisition module, wherein the charging mode comprises a safety mode, an emergency mode, a quick charging mode and a power maximization transmission mode;
the selection module further comprises:
a first judging unit, configured to judge a temperature T of the charging pad according to the current data of the mobile device acquired by the acquiring moduleiWhether or not T is satisfiedi>T0；
A first selection unit for determining the temperature T of the charging plate at the first determination unitiSatisfy Ti>T0When a safe mode is selected, the charging plate executes a power distribution algorithm for evenly distributing voltage to each coil on the charging plate, wherein T0A temperature threshold at which high power transfer of electrical energy to the charging plate results in heating;
a second determination unit for determining the temperature T of the charging plate at the first determination unitiDoes not satisfy Ti>T0Then further judging the temperature T of the mobile equipmentRWhether or not T is satisfiedR>T1；
A second selection unit for determining the temperature T of the mobile device at the second determination unitRSatisfy TR>T1When the mobile device is in a safe mode, the charging board executes a power distribution algorithm for evenly distributing voltage to each coil on the charging board, wherein T1 is a temperature threshold value of the mobile device, which causes the coil or the battery or the voltage stabilizing module to generate heat under certain fast charging conditions;
a third determination unit configured to determine the temperature T of the mobile device at the second determination unitRDoes not satisfy TR>T1Then further judging the electric quantity W of the mobile equipmentiWhether or not to satisfy Wi<W0；
A third selection unit, configured to determine the electric quantity W of the mobile device at the third determination unitiSatisfies Wi<W0When the mobile terminal is selected to enter the emergency mode, the mobile terminal executes the giving to one or more mobile devicesExecution of a priority charging power distribution algorithm, wherein W0A low battery threshold set for the charging pad to charge the mobile device preferentially;
a fourth judging unit, configured to judge the electric quantity W of the mobile device at the third judging unitiDoes not satisfy Wi<W0If so, further determining the charging current I of the mobile deviceiWhether or not to satisfy Ii>Im；
A fourth selecting unit configured to determine the charging current I of the mobile device when the fourth determining unit determines that the mobile device is in the charging current IiDoes not satisfy Ii>ImWhen the mobile equipment is in a maximum power transmission mode, executing an execution power distribution algorithm for distributing corresponding voltage to each coil of a charging plate so as to maximize the received power of the mobile equipment;
a fifth judging unit for judging the charging current I of the mobile device when the fourth judging unit judgesiSatisfy Ii>ImThen further judging the current electric quantity W of the mobile equipmentiWhether or not to satisfy Wi>W1Wherein, ImA current threshold for a conformable charging of the mobile device on the charging pad;
a fifth selection unit, configured to determine the current electric quantity W of the mobile device when the fifth determination unit determines that the current electric quantity W of the mobile device is not equal to the current electric quantity WiSatisfies Wi>W1Then, selecting to enter a power maximization transmission mode, and executing an execution power distribution algorithm for distributing corresponding voltages to each coil on the charging plate so as to maximize the received power of the mobile device, wherein W is1An electric quantity threshold value for the mobile equipment under the condition that quick charging or charging is not required;
the fifth selecting unit is further configured to determine the current electric quantity W of the mobile device when the fifth determining unit determines that the current electric quantity W of the mobile device isiDoes not satisfy Wi>W1And selecting to enter a quick charging mode, and executing an execution power distribution algorithm giving quick charging to one or more mobile devices.
6. The multi-device wireless charging system of claim 5, wherein the charging pad enters a sleep state when the first determining module determines that no mobile device is charging.
7. The system according to claim 5, wherein when the second determination module determines that the mobile device leaves the charging area, the charging pad starts charging initialization and re-acquires the current data of the mobile device sent by the mobile device through Bluetooth, so as to select the charging mode according to the acquired current data of the mobile device.
8. The system according to claim 5, wherein when the third determining module determines that the mobile device is not a newly connected mobile device, the third determining module obtains current data of the mobile device sent by the mobile device through Bluetooth, so as to select a charging mode according to the obtained current data of the mobile device.
CN201611255307.1A 2016-12-30 2016-12-30 Multi-device wireless charging method and system Active CN106786930B (en)

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