CN114977544A - Wireless charging device, device to be charged, charging system, method, and storage medium - Google Patents
Wireless charging device, device to be charged, charging system, method, and storage medium Download PDFInfo
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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
- H02J50/005—Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or 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
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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
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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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- 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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
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Abstract
The embodiment of the application discloses wireless charging device, equipment to be charged, charging system, method and storage medium, and the wireless charging device comprises: a base; wherein, a transmitting coil and a first magnet are arranged in the base; the first magnet is used for aligning and adsorbing a second magnet arranged in the equipment to be charged when the base contacts the equipment to be charged; the distribution shape of the first magnets is a symmetrical shape; the magnetization direction of the first magnet is on the plane where the first magnet is located; and the transmitting coil is used for generating an induction electromagnetic field based on the coil alternating current signal under the condition that the first magnet is aligned with and adsorbed to the second magnet, so that the receiving coil in the equipment to be charged generates a charging electric signal based on the induction electromagnetic field, and the equipment to be charged is charged.
Description
Technical Field
The present disclosure relates to wireless charging technologies, and in particular, to a wireless charging device, a device to be charged, a charging system, a charging method, and a storage medium.
Background
With the development of electronic technology, wireless charging technology is increasingly used for various devices to be charged including batteries, and the devices to be charged are wirelessly charged through a wireless charging device; the wireless charging device generates an induction electromagnetic field through a transmitting coil in the base, so that when equipment to be charged is contacted with the base, an induction electric signal can be generated through the receiving coil and the induction electromagnetic field, and the equipment to be charged is charged; generally, magnets are arranged in the equipment to be charged and the base, so that the base can be adsorbed on the equipment to be charged; however, when the base and the device to be charged are attached together, the relative position between the receiving coil and the transmitting coil is uncertain because the position between the device to be charged and the base is random; and, the magnet can influence the mutual inductance between receiving coil and the induction coil to the charging efficiency of wireless charging has been influenced.
Disclosure of Invention
The embodiment of the application provides a wireless charging device, equipment to be charged, a charging system, a charging method and a storage medium, and improves the charging efficiency of wireless charging.
The technical scheme of the application is realized as follows:
the embodiment of the application provides a wireless charging device, includes:
a transmitting coil and a first magnet are arranged in the base; the first magnet is used for aligning and adsorbing a second magnet arranged in the equipment to be charged when the base contacts the equipment to be charged; the distribution shape of the first magnets is a symmetrical shape; the magnetization direction of the first magnet is on the plane where the first magnet is located; the transmitting coil is used for generating an induction electromagnetic field based on a coil alternating current signal under the condition that the first magnet is aligned to and adsorbed by the second magnet, so that a receiving coil in the equipment to be charged generates a charging electric signal based on the induction electromagnetic field, and the equipment to be charged is charged.
The embodiment of the application provides a wait to charge equipment, includes:
a receiving coil, a second magnet and a receiving circuit; the second magnet is used for aligning and adsorbing the first magnet arranged in the base when the equipment to be charged contacts the base of the wireless charging device; the distribution shape of the second magnets is a symmetrical shape; the magnetization direction of the second magnet is on the plane where the second magnet is located; the receiving coil is used for performing electromagnetic induction on a coil alternating current signal of a transmitting coil in the wireless charging device under the condition that the first magnet is aligned with and adsorbs the second magnet, so as to generate an induced electric signal; the receiving circuit is used for converting the induced electrical signal into a charging electrical signal; and charging the equipment to be charged through the charging electric signal.
An embodiment of the present application provides a charging system, including:
the charging system comprises a wireless charging device and equipment to be charged; the wireless charging device comprises a base; a transmitting coil and a first magnet are arranged in the base; the device to be charged comprises a receiving coil, a second magnet and a receiving circuit; the first magnet is used for aligning and adsorbing the second magnet when the base contacts the equipment to be charged; the distribution shape of the first magnets and the distribution shape of the second magnets are symmetrical; the magnetization direction of the first magnet is on the plane where the first magnet is located; the magnetization direction of the second magnet is on the plane where the second magnet is located; the transmitting coil is used for generating an induction electromagnetic field based on a coil alternating current signal under the condition that the first magnet is aligned with and attracted to the second magnet; the receiving coil is used for generating an induced electric signal based on the induced electromagnetic field under the condition that the first magnet is aligned with and attracted to the second magnet; the receiving circuit is used for converting the induced electrical signal into a charging electrical signal; and charging the equipment to be charged through the charging electric signal.
The embodiment of the application provides a charging method, which is applied to the wireless charging device and comprises the following steps:
generating a coil alternating current signal based on an alternating current signal provided by a power supply, and transmitting the coil alternating current signal to a transmitting coil; under the condition that a first magnet is aligned with and adsorbs a second magnet in the equipment to be charged, generating an induction electromagnetic field based on the coil alternating current signal through a transmitting coil, and enabling a receiving coil in the equipment to be charged to generate a charging electric signal based on the induction electromagnetic field, so that the equipment to be charged is charged; the distribution shape of the first magnets is a symmetrical shape; the magnetization direction of the first magnet is on the plane where the first magnet is located.
The embodiment of the application provides a charging method, which is applied to the device to be charged and comprises the following steps:
generating an induced electric signal based on an induced electromagnetic field of a transmitting coil in a wireless charging device through a receiving coil under the condition that the second magnet is aligned with and adsorbs the first magnet; the distribution shape of the second magnets is a symmetrical shape; the magnetization direction of the second magnet is on the plane where the second magnet is located; converting the induced electrical signal into a charging electrical signal through a receiving circuit; and charging the equipment to be charged through the charging electric signal.
The embodiment of the application provides a wireless charging device, which comprises a first memory, a second memory and a charging control unit, wherein the first memory is used for storing executable instructions; a first processor, the first processor comprising: a device control chip; the charging method is used for realizing the charging method on the side of the wireless charging device when the executable instructions stored in the first memory are executed.
The embodiment of the application provides a device to be charged, which comprises a second memory, a first storage and a second storage, wherein the second memory is used for storing executable instructions; a second processor, the second processor comprising: a device control chip; the charging method is used for realizing the charging method of the device to be charged when the executable instructions stored in the second memory are executed.
The embodiment of the application provides a storage medium which stores one or more programs, and the one or more programs can be executed by one or more first processors to realize a charging method on a wireless charging device side.
The embodiment of the application provides a storage medium, wherein one or more programs are stored in the storage medium and can be executed by one or more second processors to realize a charging method on a device to be charged.
The embodiment of the application has the following beneficial effects:
the embodiment of the application discloses a wireless charging device, equipment to be charged, a charging system, a charging method and a storage medium, wherein the wireless charging device comprises a base; wherein, a transmitting coil and a first magnet are arranged in the base; the first magnet is used for aligning and adsorbing a second magnet arranged in the equipment to be charged when the base contacts the equipment to be charged; the distribution shape of the first magnets is a symmetrical shape; the magnetization direction of the first magnet is on the plane where the first magnet is located; the transmitting coil is used for generating an induction electromagnetic field based on a coil alternating current signal under the condition that the first magnet is aligned with and adsorbs the second magnet, so that a receiving coil in the equipment to be charged generates a charging electric signal based on the induction electromagnetic field, and the equipment to be charged is charged; the distribution shape of the first magnets in the base is a symmetrical shape, and the magnetic attraction of the first magnets to the second magnets is symmetrically distributed, so that the first magnets can be attracted and aligned with the second magnets, and the transmitting coil and the receiving coil are aligned; and because the magnetization direction of first magnet is on the plane that first magnet place, has increased the magnetic attraction between first magnet and the second magnet, under the first magnet is in the condition of aiming at the absorption second magnet, has reduced the mutual inductance's between receiving coil and the transmitting coil influence, has improved wireless charging efficiency.
Drawings
Fig. 1 is a schematic structural diagram of a charging system in the related art;
fig. 2 is a first graph of a magnetic attraction force provided by an embodiment of the present application;
fig. 3 is a first schematic structural diagram of a base according to an embodiment of the present disclosure;
FIG. 4 is a graph of magnetic field strength provided by an embodiment of the present application;
FIG. 5a is a graph of mutual inductance and coupling coefficient for a Z-axis magnetization direction according to an embodiment of the present application;
FIG. 5b is a graph showing the mutual inductance and coupling coefficient of the magnetization directions of the XY axes according to the embodiment of the present application;
fig. 6 is a graph illustrating a second graph of a magnetic attraction force according to an embodiment of the present disclosure;
fig. 7 is a graph three illustrating a magnetic attraction force provided by the embodiment of the present application;
fig. 8 is a second schematic structural diagram of a base according to an embodiment of the present disclosure;
fig. 9 is a schematic structural diagram of a base according to an embodiment of the present application;
fig. 10 is a first schematic structural diagram of a device to be charged according to an embodiment of the present disclosure;
fig. 11 is a schematic structural diagram of a device to be charged according to an embodiment of the present application;
fig. 12 is a schematic structural diagram of a device to be charged according to an embodiment of the present application;
fig. 13 is a schematic structural diagram of a device to be charged according to an embodiment of the present application;
fig. 14 is a first flowchart illustrating a charging method according to an embodiment of the present disclosure;
fig. 15 is a second flowchart illustrating a charging method according to an embodiment of the present application;
fig. 16 is a sixth schematic structural diagram of a wireless charging device according to an embodiment of the present application;
fig. 17 is a schematic structural diagram five of a device to be charged according to an embodiment of the present application.
Detailed Description
The wireless charging technology is derived from a wireless power transmission technology, and wireless charging modes are mainly divided into an electromagnetic induction type (or magnetic coupling type), a radio wave type and an electromagnetic resonance type according to different wireless charging principles. Currently, the mainstream Wireless charging standards include Qi standard, Power Materials Alliance (PMA) standard, Wireless Power Alliance (Alliance for Wireless Power, A4WP), and the like; the Qi standard and the PMA standard both use an electromagnetic induction type for wireless charging, and the A4WP standard uses an electromagnetic resonance type for wireless charging. In the embodiment of the application, the wireless charging technology for the device to be charged adopts an electromagnetic induction type, the wireless transmitting device (such as a wireless charging base) and the device to be charged transmit energy through a magnetic field, and the wireless transmitting device and the device to be charged are connected without a charging cable, so that the battery in the device to be charged can be charged, and the charging is more convenient.
The device to be charged may refer to a terminal, which may include, but is not limited to, a device configured to receive/transmit communication signals via a wireline connection (e.g., via a Public Switched Telephone Network (PSTN), a Digital Subscriber Line (DSL), a Digital cable, a direct cable connection, and/or another data connection/Network) and/or via a Wireless interface (e.g., a Wireless Local Area Network (WLAN) for a cellular Network, a Digital television Network such as a Digital Video Broadcasting-Handheld (DVB-H) Network, a satellite Network, an Amplitude Modulation-Frequency Modulation (AM-FM) broadcast transmitter, and/or a Wireless interface of another communication terminal). Among them, a terminal configured to communicate through a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal", and/or a "mobile terminal", where the mobile terminal includes, but is not limited to, a mobile terminal device such as a mobile phone, a tablet computer, a notebook computer, a palm top computer, a Personal Digital Assistant (PDA), a Portable Media Player (PMP), a navigation device, and the like, and may also include a fixed terminal device such as a Digital TV, a desktop computer, and the like. In addition, the device to be charged used in the embodiment of the present application may further include a mobile power supply, and the mobile power supply may store the received charging energy to provide energy to other devices to be charged. In the embodiments of the present application, this is not limited.
Referring to fig. 1, a schematic diagram of a composition structure of a charging system 10 provided in the related art is shown; as shown in fig. 1, the charging system 10 includes a wireless charging apparatus and a device to be charged 102; the wireless charging device comprises a base 101; the base 101 and the to-be-charged device 102 are provided with the magnets, so that when the base 101 and the to-be-charged device 102 in the wireless charging device are attached together, the receiving coil in the to-be-charged device induces the induced electromagnetic field of the transmitting coil in the base 101 to generate an induced electric signal, and the to-be-charged device 102 is charged through the induced electric signal.
In the embodiment of the application, the magnet may influence the mutual inductance between the receiving coil and the transmitting coil; when the base 101 and the device to be charged 102 are attached together, the relative positions are random, which causes the relative positions of the receiving coil in the device to be charged 102 and the transmitting coil in the base 101 to be random, so that if the receiving coil and the transmitting coil are not aligned; thereby affecting the charging efficiency of the device to be charged 102.
Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
The embodiment of the application provides a wireless charging device, and wireless charging device includes: a base; the base is provided with a transmitting coil and a first magnet; the first magnet is used for aligning and adsorbing a second magnet arranged in the equipment to be charged when the base contacts the equipment to be charged; the distribution shape of the first magnets is a symmetrical shape; the magnetization direction of the first magnet is on the plane where the first magnet is located; and the transmitting coil is used for generating an induction electromagnetic field based on a coil alternating current signal under the condition that the first magnet is aligned with and adsorbs the second magnet, so that a receiving coil in the equipment to be charged generates a charging electric signal based on the induction electromagnetic field, and the equipment to be charged is charged.
It should be noted that the symmetric shape may be an axisymmetric pattern, a rotationally symmetric pattern, or a centrosymmetric pattern, which is not limited in this embodiment of the present application.
In the embodiment of the present application, the relative distribution positions of the first magnet and the transmitting coil may be: the distribution area of the transmitting coil surrounds the distribution area corresponding to the distribution shape of the first magnet; alternatively, the distribution area of the transmitting coil is surrounded by the distribution area corresponding to the distribution shape of the first magnet, for example, but the embodiment of the present application is not limited thereto.
In the embodiment of the present application, the magnetic attraction force between the first magnet and the second magnet includes a planar magnetic attraction force on an adsorption plane between the first magnet and the second magnet, and a perpendicular magnetic attraction force perpendicular to the adsorption plane; wherein, the planar attraction can align the first magnet and the second magnet, and the vertical magnetic attraction can stably attract the first magnet and the second magnet together.
Referring to fig. 2, fig. 2 shows a graph of perpendicular magnetic attraction forces for different magnetization directions. As shown in fig. 2, the abscissa is the magnet pitch in mm; the ordinate is vertical magnetic attraction and the unit is N; the solid line indicates the direction in which the magnetization direction points to the plane of the magnet (XY-axis direction); the dotted line indicates that the magnetization direction is directed in the direction perpendicular to the plane of the magnet (Z-axis direction); as can be seen from fig. 2, the perpendicular magnetic attraction force of the XY-axis magnetized magnet is larger than that of the Z-axis magnetized magnet.
In the embodiment of the present application, the second magnet is shaped in a symmetrical shape, and in the case where the relative distribution positions of the second magnet and the receiving coil are the same as the relative distribution positions of the first magnet and the transmitting coil, the magnetic attraction force between the first magnet and the second magnet will align the first magnet and the second magnet in accordance with the distribution shape, and thus, the distribution area of the receiving coil and the distribution area of the transmitting coil are aligned at the center.
In the embodiment of the present application, the magnetization direction of the first magnet may be along a plane in which the distribution region of the first magnet is located. Here, the magnetization direction of the first magnet may be perpendicular to an edge line of the distribution shape of the first magnet; alternatively, the magnetization direction of the first magnet may be directed to the center of the distribution shape of the first magnet; the embodiments of the present application are not limited thereto.
Illustratively, as shown in fig. 3, a transmitting coil 3011 and a first magnet 3012 are disposed in the base 301; the first magnet 3012 is used for aligning and adsorbing a second magnet arranged in the device to be charged when the base 301 contacts the device to be charged; the first magnets 3012 are distributed in a ring shape, and transmitting coils 3011 are distributed in the ring; the magnetization direction of the first magnet points to the center of the ring.
It can be understood that, the distribution shape of the first magnets in the base is a symmetrical shape, so that the first magnets can align and adsorb the second magnets, the transmitting coil and the receiving coil are aligned, and the wireless charging efficiency is improved; in addition, because the magnetization direction of the first magnet is on the plane of the first magnet, the vertical magnetic attraction between the first magnet and the second magnet is increased, so that the first magnet and the second magnet are stably adsorbed, and the relative position change is not easy to occur in the charging process; meanwhile, under the condition that the first magnet is aligned with and adsorbs the second magnet, the influence on mutual inductance between the receiving coil and the transmitting coil is reduced, and the wireless charging efficiency is improved.
In some embodiments of the present application, a direction of the first magnetic pole of the first magnet is directed to a center of the distribution shape of the first magnet; the direction of the second magnetic pole of the first magnet is opposite to the direction of the first magnetic pole of the first magnet.
In the embodiment of the application, the magnetization directions of the first magnet are the N pole direction and the S pole direction; wherein, the N pole direction is opposite to the S pole direction.
In the embodiment of the present application, the N-pole direction of the first magnet may be directed to the center of the distribution shape of the first magnet, or the S-pole direction of the first magnet may be directed to the center of the distribution shape of the first magnet, which is not limited in the embodiment of the present application.
In this application embodiment, a magnetization direction of the first magnet points to the center of the distribution shape of the first magnet, and thus, the first magnet and the second magnet can align the first magnet and the second magnet to be adsorbed through the magnetic attraction force pointing to the magnetization direction, thereby realizing the alignment of the transmitting coil and the receiving coil, and further improving the wireless charging efficiency.
In some embodiments of the present application, the first magnet is required to satisfy at least one of:
under the condition that the first magnet and the second magnet are aligned and adsorbed, the magnetic attraction force between the first magnet and the second magnet is larger than or equal to a preset magnetic force value; the magnetic field intensity of the first magnet is smaller than a preset magnetic field intensity value; under the condition that the first magnet and the second magnet are aligned and adsorbed, the mutual inductance coefficient between the receiving coil and the transmitting coil is larger than a preset mutual inductance value; the coupling coefficient between the receiving coil and the transmitting coil is larger than a preset coupling value.
In the embodiment of the present application, the preset magnetic force value may include a planar magnetic force value and a vertical magnetic force value; the size of the preset magnetic force value can be determined according to factors such as the size, the weight and the shape of the base and the device to be charged, and therefore the embodiment of the application is not limited.
It should be noted that the planar magnetic attraction between the first magnet and the second magnet needs to be greater than or equal to the planar magnetic force value to sufficiently drive the relative position between the base and the device to be charged to be adjusted, so as to achieve alignment between the transmitting coil and the receiving coil; perpendicular magnetic attraction between first magnet and the second magnet needs be greater than or equal to perpendicular magnetic force value to make stable absorption between base and the equipment of treating charging, difficult emergence displacement.
In the embodiment of the present application, since there is a magnetic field around the first magnet, and the magnetic field of the first magnet may have a certain safety effect on devices around the first magnet, such as a transmitting coil, etc., it is necessary to make the magnetic field strength of the first magnet smaller than the predetermined magnetic field strength value.
Referring to fig. 4, fig. 4 shows a graph of magnetic field strength; taking the N52SH magnet as an example, the first magnet is 3mm thick and the second magnet is 0.3mm thick, as shown in fig. 4, the abscissa is the distance to the magnet in mm; the ordinate is the magnetic field strength, and the unit is H; different curves indicate different magnetization directions, wherein the solid line indicates the magnetization directions in the plane (XY-axis direction) of the magnet; the dotted line indicates that the magnetization direction is directed in a direction (Z-axis direction) perpendicular to the plane of the magnet; as can be seen from the figure, the magnetic field intensity around the magnet whose magnetization direction is the XY axis direction is smaller than the magnetic field intensity around the magnet whose magnetization direction is the Z axis direction.
In the embodiment of the application, the base charges the device to be charged through mutual inductance between the transmitting coil and the receiving coil, so that the influence of the first magnet on the mutual inductance needs to be reduced; here, the mutual inductance may be characterized by a mutual inductance coefficient and a coupling coefficient.
In the embodiment of the application, the larger the mutual inductance coefficient and the coupling coefficient are, the better the induction effect of the receiving coil on the induction electromagnetic field is, and the higher the wireless charging efficiency is; here, the mutual inductance between the receiving coil and the transmitting coil needs to be greater than a preset mutual inductance value, and the coupling coefficient between the receiving coil and the transmitting coil is greater than the preset coupling value, so as to ensure the charging efficiency of the device to be charged.
In some embodiments of the present application, in the case where the first magnet and the second magnet are aligned for attraction, the magnet spacing between the first magnet and the second magnet is inversely related to the magnetic attraction force; the magnet distance between the first magnet and the second magnet is positively correlated with the mutual inductance coefficient; the magnet spacing between the first magnet and the second magnet is positively correlated with the coupling coefficient.
In the embodiment of the present application, in the case where the first magnet and the second magnet are attracted in alignment, the larger the magnet pitch between the first magnet and the second magnet, the smaller the magnetic attractive force between the first magnet and the second magnet; the larger the magnet spacing between the first magnet and the second magnet, the larger the mutual inductance and coupling coefficient.
Referring to fig. 5a and 5b, fig. 5a shows a graph of mutual inductance and coupling coefficient for the Z-axis magnetization direction; as shown in fig. 5a, the abscissa is the magnet spacing in mm; the first ordinate is the mutual inductance coefficient in μ H; the second ordinate is the coupling coefficient; it can be seen that the mutual inductance decreases significantly with decreasing magnet spacing, with a substantially constant coupling coefficient; FIG. 5b shows a graph of the mutual inductance and coupling coefficient for the XY axis magnetization directions; as shown in fig. 5b, the abscissa is the magnet spacing in mm; the first ordinate is the mutual inductance coefficient, with the unit being muH; the second ordinate is the coupling coefficient; it can be seen that the mutual inductance and coupling coefficient decrease slowly with decreasing magnet spacing; it is obvious that in the case of a magnet having the XY axis direction as the magnetization direction, the mutual inductance and coupling coefficient between the coils are less affected when the magnet pitch is 3mm or less. And, the mutual inductance of the XY axis magnetization is higher than the mutual inductance of the Z axis magnetization at the same magnet pitch; the coupling coefficient of the XY axis magnetization is higher than that of the Z axis magnetization.
In some embodiments of the present application, the thickness of the first magnet is positively correlated to the magnetic attraction force.
Here, the thicker the thickness of the first magnet is, the greater the magnetic attractive force between the first magnet and the second magnet is; the thinner the thickness of the first magnet is, the smaller the magnetic attraction force between the first magnet and the second magnet is; that is, in order to ensure stable attraction between the first magnet and the second magnet, the thickness of the first magnet needs to be sufficiently thick.
Referring to fig. 6, the magnet material is N48SH, the magnetization direction is the z-axis direction, and the thickness of the second magnet is 0.3 mm; the magnetic attraction force curve in fig. 6 shows the influence of the magnet pitch, the magnet thickness on the vertical magnetic attraction force; as shown in fig. 6, the ordinate is the magnet spacing in mm; the abscissa is vertical magnetic attraction and the unit is N; the different curves in fig. 6 represent different thicknesses of the first magnet; as can be seen from fig. 6, in the first magnet of any one thickness, the magnet pitch is gradually changed from 5mm to 2.5mm, the vertical magnetic attraction force is gradually increased, and the magnetic attraction force is larger the thicker the thickness is.
In some embodiments of the present application, the thickness of the second magnet is 0.3mm, the vertical magnetic force value is 5N, the thickness of the first magnet should be greater than 2.5mm, and the magnet spacing is less than or equal to 3 mm.
In some embodiments of the present application, the magnetic attraction forces of magnets of different materials are different in magnitude.
Referring to fig. 7, the magnetic attractive force curve of fig. 7 shows the influence of the magnet material, the magnet spacing, on the vertical magnetic attractive force; as shown in fig. 7, the ordinate is the vertical magnetic attraction force in units of N; the abscissa is the magnet spacing in mm; different curves represent different magnet specifications; as can be seen from fig. 7, the magnetic attraction force of the magnet made of N52SH is larger than that of the magnet made of N48SH, and the difference between the two magnetic attraction forces becomes more significant as the magnet pitch becomes smaller.
In the embodiment of the application, the magnetization direction of the magnet is the XY axis direction; if the thickness of the second magnet is 0.3mm, the thickness of the first magnet can be greater than or equal to 2.5 mm; under the condition that the first magnet and the second magnet are aligned and adsorbed, the distance between the magnets is 3mm, and the distance between the transmitting coil and the receiving coil is 5 mm; therefore, the influence of the magnet on mutual inductance is reduced while the vertical magnetic attraction is ensured to be more than 5N; in addition, the material of the first magnet and the second magnet can be N52SH, so that the magnetic attraction between the magnets is further improved, and the base and the device to be charged are ensured to be stably adsorbed.
In some embodiments of the present application, the distribution area corresponding to the distribution shape of the first magnet surrounds the distribution area of the transmitting coil.
In the embodiment of the application, the first magnets are distributed around the transmitting coil, so that the influence of the magnets on mutual inductance between the coils can be reduced; the larger the distance between the first magnet and the transmitting coil is, the smaller the influence of the magnet is.
In some embodiments of the present application, the spacing between the first magnet and the transmitter coil is 6 mm.
In some embodiments of the present application, the distribution shape of the first magnet is in the shape of a first circular ring.
In the embodiment of the application, the magnetization direction of the first magnet points to the center of the first circular ring; thus, the center of the magnetic moment of the first magnet is the center of the first ring.
In some embodiments of the present application, the first magnet may be a first ring-shaped magnet formed of a complete magnet block.
Referring to fig. 8, fig. 8 shows a base 801, the base 801 comprising a transmitting coil 8011 and a first magnet 8012; the first magnet 8012 is a first ring-shaped magnet, and the transmitting coil is surrounded by the first magnet.
In some embodiments of the present application, the first magnet comprises: m magnet blocks; the m magnet blocks are arranged at equal intervals according to the shape of the first circular ring; wherein m is a positive integer greater than or equal to 3.
Illustratively, m is equal to 10; as shown in fig. 9, the base 901 includes a transmitting coil 9011 and a first magnet 9012; the first magnets 9012 are formed by 10 magnet blocks arranged at equal intervals in a first annular shape, and the first magnets 9012 are distributed around the transmitting coil 9011.
In some embodiments of the present application, m is equal to 36, and the 36 magnet blocks are arranged at equal intervals in the shape of a first circular ring; wherein the space between the magnet blocks is 0.42 mm.
In the embodiment of the present application, the value of m and the interval between the magnet blocks may be set as needed, and the embodiment of the present application is not limited thereto.
In some embodiments of the present application, m magnet pieces are spliced to form a first magnet; as shown in fig. 3, the first magnet 3012 includes 36 magnet blocks, and the 36 magnet blocks are joined to form a first annular magnet.
It can be understood that the m magnet blocks can be freely spliced into various symmetrical shapes, the arrangement flexibility of the distribution shape of the first magnet is increased, and the arrangement cost is reduced.
The embodiment of the application provides a wait battery charging outfit, includes: a receiving coil, a second magnet and a receiving circuit; the second magnet is used for aligning to the first magnet arranged in the adsorption base when the equipment to be charged contacts the base of the wireless charging device; the distribution shape of the second magnets is a symmetrical shape; the magnetization direction of the second magnet is on the plane where the second magnet is located; the receiving coil is used for performing electromagnetic induction on a coil alternating current signal of the transmitting coil in the wireless charging device under the condition that the first magnet is aligned with and adsorbs the second magnet, so that an induced electrical signal is generated; the receiving circuit is used for converting the induced electrical signal into a charging electrical signal; and charging the equipment to be charged through the charging electric signal.
In this application embodiment, the receiving coil is an alternating current signal based on an induced electrical signal generated by electromagnetic induction, and the receiving circuit can convert the alternating current signal into a direct current signal, and use the direct current signal as a charging electrical signal, so as to charge the device to be charged.
In this application embodiment, the magnetic attraction between first magnet and the second magnet can make base and the equipment of waiting to charge adsorb together, keeps relative position fixed.
It should be noted that the shape of the second magnet may be a symmetrical shape; here, the symmetric shape may be an axisymmetric pattern, a rotationally symmetric pattern, or a centrosymmetric pattern, and the embodiment of the present application is not limited thereto.
In the embodiment of the present application, the relative distribution positions of the second magnet and the receiving coil may be: the distribution area of the receiving coil surrounds the distribution area corresponding to the distribution shape of the second magnet; alternatively, the distribution area of the receiving coil is surrounded by the distribution area corresponding to the distribution shape of the second magnet, for example, but the embodiment of the present application is not limited thereto.
In the embodiment of the present application, the magnetic attraction force between the first magnet and the second magnet is described in detail on the wireless charging device side, and is not described herein again.
In the embodiment of the present application, in the case where the second magnet has a symmetrical shape and the relative distribution positions of the second magnet and the receiving coil are the same as the relative distribution positions of the first magnet and the transmitting coil, the magnetic attraction force between the first magnet and the second magnet will align the first magnet and the second magnet in accordance with the distribution shape, and thus, the distribution area of the receiving coil and the distribution area of the transmitting coil are aligned with each other.
In the embodiment of the present application, the magnetization direction of the second magnet may be along a plane in which the distribution region of the second magnet is located. Here, the magnetization direction of the second magnet may be perpendicular to the edge line of the distribution shape of the first magnet; alternatively, the magnetization direction of the second magnet may be directed to the center of the distribution shape of the second magnet; the embodiments of the present application are not limited thereto.
For example, as shown in fig. 10, a receiving coil 10021 and a second magnet 10022 are provided in the device to be charged 1002; the second magnets 10022 are distributed in the shape of a circular ring, and receiving coils 10021 are distributed inside the circular ring; the magnetization direction of the second magnet 10022 is directed toward the center of the ring.
It can be understood that, because the distribution shape of the second magnets in the device to be charged is a symmetrical shape, the second magnets can align and adsorb the first magnets, so that the transmitting coil and the receiving coil are aligned, and the wireless charging efficiency is improved; in addition, because the magnetization direction of the second magnet is on the plane where the second magnet is located, the vertical magnetic attraction between the first magnet and the second magnet is increased, so that the first magnet and the second magnet are stably adsorbed, and the relative position change is not easy to occur in the charging process; meanwhile, under the condition that the second magnet is aligned to and adsorbs the first magnet, the influence on mutual inductance between the receiving coil and the transmitting coil is reduced, and the wireless charging efficiency is improved.
In some embodiments of the present application, the direction of the first magnetic pole of the second magnet is directed to the center of the distribution shape of the second magnet; the direction of the second magnetic pole of the second magnet is opposite to the direction of the first magnetic pole of the first magnet.
In some embodiments of the present application, the second magnet is required to satisfy at least one of:
under the condition that the first magnet and the second magnet are aligned and adsorbed, the magnetic attraction force between the first magnet and the second magnet is greater than or equal to a preset magnetic force value; the magnetic field intensity of the first magnet is smaller than a preset magnetic field intensity value; under the condition that the first magnet and the second magnet are aligned and adsorbed, the mutual inductance coefficient between the receiving coil and the transmitting coil is larger than a preset mutual inductance value; the coupling coefficient between the receiving coil and the transmitting coil is larger than a preset coupling value.
Here, the preset magnetic force value, the mutual inductance between the receiving coil and the transmitting coil, and the influence of the magnet distance between the first magnet and the second magnet on the magnetic attraction force, the mutual inductance coefficient, and the coupling coefficient, and the influence of the magnet material on the magnetic attraction force are all described on the wireless charging device side, and are not described herein again.
In this embodiment of the application, because there is a magnetic field around the second magnet, and the magnetic field of the second magnet may cause a certain safety influence on devices, such as a receiving coil, around the second magnet in the device to be charged, the magnetic field strength of the second magnet needs to be smaller than the preset magnetic field strength value.
In some embodiments of the present application, the thickness of the second magnet is positively correlated to the magnetic attraction force.
In the embodiment of the present application, when the thickness of the first magnet is a fixed value, the thicker the thickness of the second magnet is, the larger the magnetic attraction force between the first magnet and the second magnet is; the thinner the thickness of the first magnet is, the smaller the magnetic attraction force between the first magnet and the second magnet is; therefore, in order to ensure stable attraction between the first magnet and the second magnet, the thickness of the second magnet needs to be sufficiently thick.
In some embodiments of the present application, the thickness of the second magnet is less than or equal to the thickness of the receiving coil.
In this embodiment, if the thickness of the second magnet is smaller than that of the receiving coil, the second magnet is added to the device to be charged, so that the thickness of the device to be charged is not increased, and the size of the device to be charged is not affected.
Illustratively, the thickness of the receiving coil of the device to be charged is 0.3mm, and then the thickness of the second magnet should be less than or equal to 0.3mm, and in order to ensure the magnetic attraction force between the first magnet and the second magnet, the maximum value of the thickness of the receiving coil is 0.3mm as the thickness of the second magnet.
In some embodiments of the present application, the distribution area corresponding to the distribution shape of the second magnet surrounds the distribution area of the receiving coil.
In the embodiment of the application, the second magnets are distributed around the receiving coil, so that the influence of the magnets on mutual inductance between the coils can be reduced; the larger the distance between the second magnet and the receiving coil is, the smaller the influence of the magnet is.
In some embodiments of the present application, the spacing between the second magnet and the receiving coil is 6 mm.
In some embodiments of the present application, the distribution shape of the second magnet is in the shape of a second circular ring.
In the embodiment of the application, the magnetization direction of the second magnet points to the center of the second circular ring; thus, the center of the magnetic moment of the second magnet is the center of the second ring.
In some embodiments of the present application, the second magnet may be a second ring-shaped magnet formed of a complete magnet block.
Referring to fig. 11, fig. 11 shows a device to be charged 1102, the device to be charged 1102 including a receiving coil 11021 and a second magnet 11022; the second magnet 11022 is a second annular magnet, and the receiving coil 11021 is surrounded by the second magnet 11022.
In an embodiment of the present application, the second magnet includes: n magnet blocks; the n magnet blocks are arranged in a second circular ring shape.
Illustratively, n equals 8; a device to be charged 1202 shown in fig. 12, including a receiving coil 12021 and a second magnet 12022; the second magnet 12022 is formed by 8 magnet blocks arranged in a second circular ring shape, wherein the 8 magnet blocks are arranged non-uniformly, and the distances between the 8 magnet blocks are different; the second magnets 12022 are distributed around the receiving coil 12021.
In some embodiments of the present application, the second magnet comprises: n magnet blocks; the n magnet blocks are arranged at equal intervals according to the shape of the second circular ring; wherein n is a positive integer greater than or equal to 3.
Illustratively, n equals 10; the device to be charged 1302 shown in fig. 13 includes a receiving coil 13021 and a second magnet 13022; the second magnets 13022 are arranged by 10 magnet blocks at equal intervals in a second circular ring shape, and the second magnets 13022 are distributed around the receiving coil 13021.
In the embodiment of the present application, the value of n and the interval between the magnet blocks may be set as needed, and the embodiment of the present application is not limited thereto.
In some embodiments of the present application, n is equal to 36, and the 36 magnet blocks are arranged at equal intervals in the shape of a second circular ring; wherein the space between the magnet blocks is 0.42 mm.
In some embodiments of the present application, n magnet pieces are spliced to form a second magnet; as shown in fig. 10, the second magnet 10022 includes 36 magnet pieces, and the 36 magnet pieces are joined to form a second annular magnet.
It can be understood that the n magnet blocks can be freely spliced into various symmetrical shapes, the arrangement flexibility of the distribution shape of the second magnet is increased, and the arrangement cost is reduced.
Based on the wireless charging device and the equipment to be charged, the embodiment of the application provides a charging system, which comprises a base and the equipment to be charged; the wireless charging device comprises a base; the base is provided with a transmitting coil and a first magnet; the device to be charged comprises a receiving coil, a second magnet and a receiving circuit; wherein,
the first magnet is used for aligning and adsorbing the second magnet when the base contacts the equipment to be charged; the distribution shape of the first magnets and the distribution shape of the second magnets are symmetrical; the magnetization direction of the first magnet is on the plane where the first magnet is located; the magnetization direction of the second magnet is on the plane where the second magnet is located; the transmitting coil is used for generating an induced electromagnetic field based on a coil alternating current signal under the condition that the first magnet is aligned with and adsorbs the second magnet; the receiving coil is used for generating an induced electric signal based on the induced electromagnetic field under the condition that the first magnet is aligned with and adsorbs the second magnet; the receiving circuit is used for converting the induced electrical signal into a charging electrical signal; and charging the equipment to be charged through the charging electric signal.
It can be understood that the base and the device to be charged can be attracted together through the magnetic attraction force between the first magnet and the second magnet, and the distribution shapes of the first magnet and the second magnet are both symmetrical shapes, so that when the first magnet and the second magnet are attracted together, the center of the distribution shape of the first magnet is aligned with the distribution center of the second magnet, and therefore the transmitting coil is aligned with the receiving coil, and therefore the wireless charging efficiency is improved; and the magnetization directions of the first magnet and the second magnet are both XY-axis directions, so that the magnetic attraction between the first magnet and the second magnet is improved, the influence on mutual inductance between coils is reduced, and the safety of other devices around the magnets is ensured.
In some embodiments of the present application, the wireless charging device further comprises an adapter; the base and the adapter are connected through a wire; the adapter is used for converting an alternating current signal provided by a power supply into a direct current signal; and generating a coil alternating current signal based on the direct current signal, and transmitting the coil alternating current signal to the transmitting coil.
In the embodiment of the application, the wireless charging device comprises an adapter and a base, wherein the adapter and the base are connected through a wire; the adapter is used for converting an alternating current signal provided by a power supply into a coil alternating current signal.
In the embodiment of the present application, the adapter may include: the device comprises an alternating current-direct current conversion module, a direct current voltage conversion module, an inverse rectifier bridge, a micro control module and an emission control module; the alternating current-direct current conversion module is used for converting an alternating current signal provided by a power supply into a direct current signal and inputting the direct current signal into the inverse rectifier bridge; the transmitting control module is used for acquiring the charging state information of the equipment to be charged; feeding back the charging state information to the micro control module, generating a control signal based on the charging state information, and sending the control signal to the inverse rectifier bridge; the micro-control module is used for generating a voltage regulating signal according to the charging state information and sending the voltage regulating signal to the direct-current voltage conversion module; the direct current voltage conversion module is used for regulating the voltage of the direct current signal according to the voltage regulating signal to obtain a regulated direct current signal and transmitting the regulated direct current signal to the inverse rectifier bridge; the inverse rectifier bridge is used for adjusting a switching circuit in the inverse rectifier bridge according to the control signal so as to obtain a voltage-regulated coil alternating current signal; the coil alternating current signal is transmitted to the transmitting coil.
It should be noted that, regarding the arrangement of the first magnet and the arrangement of the second magnet, detailed descriptions have been made on the wireless charging device side and the device to be charged, respectively, and are not repeated herein.
An embodiment of the present application provides a charging method, which is applied to the above wireless charging apparatus, and as shown in fig. 14, the method may include: S101-S102.
S101, generating a coil alternating current signal based on an alternating current signal provided by a power supply, and transmitting the coil alternating current signal to a transmitting coil;
s102, under the condition that a first magnet is aligned to and attached to a second magnet, an induction electromagnetic field is generated through a transmitting coil based on a coil alternating current signal, a receiving coil in equipment to be charged generates a charging electric signal based on the induction electromagnetic field, and therefore the equipment to be charged is charged; the distribution shape of the first magnets is a symmetrical shape; the magnetization direction of the first magnet is on the plane of the first magnet.
In this application embodiment, the wireless charging device can generate a coil alternating current signal based on an alternating current signal provided by a power supply through the adapter, and transmit the coil alternating current signal to the transmitting coil, so that the transmitting coil can generate an induction electromagnetic field based on the alternating current signal, and the device to be charged is charged through the induction electromagnetic field.
In the embodiment of the application, under the condition that the first magnet adsorbs the second magnet, the device to be charged is enabled to pass through the receiving coil, a charging electric signal can be generated based on the induced electromagnetic field, and the device to be charged is charged through the charging electric signal.
In this application embodiment, the distribution shape of first magnet is the symmetry shape to make first magnet can aim at and adsorb the second magnet, thereby make the receiving coil of waiting to charge equipment and the transmitting coil alignment of wireless charging device, improve charging efficiency.
It should be noted that, regarding the arrangement of the first magnet and the arrangement of the second magnet, detailed descriptions have been made on the wireless charging device side and the device to be charged, respectively, and are not repeated herein.
An embodiment of the present application provides a charging method, which is applied to the above device to be charged, and as shown in fig. 15, the method may include: S201-S203.
S201, generating an induced electric signal based on an induced electromagnetic field of a transmitting coil through a receiving coil under the condition that a second magnet is aligned with and adsorbs a first magnet; the distribution shape of the second magnets is a symmetrical shape, and the magnetization directions of the second magnets are on the plane where the second magnets are located;
s202, converting the induction electric signal into a charging electric signal through a receiving circuit;
and S203, charging the device to be charged through the charging electric signal.
It should be noted that, regarding the charging method executed by the device to be charged in S201 to S203, the description has been already made on the side of the device to be charged, and details are not repeated here.
In some embodiments of the present application, the device to be charged further comprises a battery; and the equipment to be charged charges the battery through the charging electric signal, so that the equipment to be charged is charged.
It should be noted that, regarding the arrangement of the first magnet and the arrangement of the second magnet, detailed descriptions have been made on the wireless charging device side and the device to be charged, respectively, and are not repeated herein.
Fig. 16 is a schematic structural diagram of a wireless charging device according to an embodiment of the present application. As shown in fig. 16, the wireless charging device 21 includes: a first memory 211 and a first processor 212; the first memory 211 and the first processor 212 are connected by a communication bus 213. A first memory 211 for storing executable instructions; the first processor 212, which includes a device control chip (not shown in fig. 16), is configured to implement the charging method described above when executing the executable instructions stored in the first memory 211.
Fig. 17 is a schematic structural diagram of a device to be charged according to an embodiment of the present application. As shown in fig. 17, the device to be charged 22 includes: a second memory 221 and a second processor 222; the second memory 221 and the second processor 222 are connected by a communication bus 223. A second memory 221 for storing executable instructions; the second processor 222, which includes a communication control chip (not shown in fig. 17), is configured to implement the charging method described above when executing the executable instructions stored in the second memory 221.
Embodiments of the present application provide a computer program product or computer program comprising computer instructions stored in a computer readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the charging method described in the embodiment of the present application.
The embodiment of the present application provides a computer-readable storage medium storing executable instructions, and when the executable instructions are executed by a first processor, the charging method applied to a wireless charging device provided by the embodiment of the present application is implemented, or when the executable instructions are executed by a second processor, the charging method applied to a device to be charged provided by the embodiment of the present application is implemented.
In some embodiments, the computer-readable storage medium may be memory such as FRAM, ROM, PROM, EPROM, EEPROM, flash, magnetic surface memory, optical disk, or CD-ROM; or may be various devices including one or any combination of the above memories.
In some embodiments, the executable instructions may be in the form of a program, software module, script, or code written in any form of programming language, including compiled or interpreted languages, or declarative or procedural languages, and it may be deployed in any form, including as a stand-alone program or as a module, component, subroutine, or other unit suitable for use in a computing environment.
By way of example, executable instructions may correspond, but do not necessarily have to correspond, to files in a file system, and may be stored in a portion of a file that holds other programs or data, such as in one or more scripts in a hypertext Markup Language (HTML) document, in a single file dedicated to the program in question, or in multiple coordinated files (e.g., files that store one or more modules, sub-programs, or portions of code).
As an example, executable instructions may be deployed to be executed on one computing device or on multiple computing devices located at one site or distributed across multiple sites and interconnected by a communication network.
In summary, according to the embodiments of the present application, the wireless charging device, the device to be charged, the charging system, the method, and the storage medium provided in the embodiments of the present application can automatically align the first magnet and the second magnet; therefore, the receiving coil in the equipment to be charged and the transmitting coil in the base can be automatically aligned, and the charging efficiency is improved; and, owing to set up the first generation module beyond the alternating current-direct current conversion module in the adapter, made in the base reduce first generation module to reduce the volume and the weight of base, so, increased the adsorption affinity between base and the equipment of waiting to charge, convenience of customers treats the equipment of waiting to charge while using.
The above description is only an example of the present application, and is not intended to limit the scope of the present application. Any modification, equivalent replacement, and improvement made within the spirit and scope of the present application are included in the protection scope of the present application.
Claims (24)
1. A wireless charging device, comprising: a base;
a transmitting coil and a first magnet are arranged in the base;
the first magnet is used for aligning and adsorbing a second magnet arranged in the equipment to be charged when the base contacts the equipment to be charged; the distribution shape of the first magnets is a symmetrical shape; the magnetization direction of the first magnet is on the plane where the first magnet is located;
the transmitting coil is used for generating an induction electromagnetic field based on a coil alternating current signal under the condition that the first magnet is aligned with and adsorbed to the second magnet, so that a receiving coil in the equipment to be charged generates a charging electric signal based on the induction electromagnetic field, and the equipment to be charged is charged.
2. The wireless charging apparatus of claim 1,
the direction of the first magnetic pole of the first magnet points to the center of the distribution shape of the first magnet; the direction of the second magnetic pole of the first magnet is opposite to the direction of the first magnetic pole of the first magnet.
3. The wireless charging apparatus according to claim 1 or 2, wherein the first magnet satisfies at least one of:
under the condition that the first magnet and the second magnet are aligned and adsorbed, the magnetic attraction force between the first magnet and the second magnet is larger than or equal to a preset magnetic force value;
the magnetic field intensity of the first magnet is smaller than a preset magnetic field intensity value;
under the condition that the first magnet and the second magnet are aligned and adsorbed, the mutual inductance coefficient between the receiving coil and the transmitting coil is larger than a preset mutual inductance value; and the coupling coefficient between the receiving coil and the transmitting coil is larger than a preset coupling value.
4. The wireless charging apparatus of claim 3,
in the case where the first magnet and the second magnet are attracted in alignment, the magnet spacing between the first magnet and the second magnet is inversely related to the magnetic attraction force; the magnet spacing between the first magnet and the second magnet is positively correlated with the mutual inductance; a magnet pitch between the first magnet and the second magnet is positively correlated with the coupling coefficient.
5. The wireless charging apparatus of claim 3,
the thickness of the first magnet is positively correlated with the magnetic attraction force.
6. The wireless charging apparatus according to any one of claims 1 to 5,
the distribution area corresponding to the distribution shape of the first magnet surrounds the distribution area of the transmitting coil.
7. The wireless charging apparatus of claim 6,
the distribution shape of the first magnets is in a first annular shape.
8. The wireless charging apparatus of claim 7,
the first magnet includes: m magnet blocks; the m magnet blocks are arranged at equal intervals according to the shape of the first ring; or the m magnet blocks are spliced to form the first magnet; wherein m is a positive integer greater than or equal to 3.
9. An apparatus to be charged, comprising: a receiving coil, a second magnet and a receiving circuit;
the second magnet is used for aligning and adsorbing the first magnet arranged in the base when the equipment to be charged contacts the base of the wireless charging device; the distribution shape of the second magnets is a symmetrical shape; the magnetization direction of the second magnet is on the plane where the second magnet is located;
the receiving coil is used for performing electromagnetic induction on a coil alternating current signal of a transmitting coil in the wireless charging device under the condition that the first magnet is aligned with and attracted to the second magnet, so as to generate an induced electric signal;
the receiving circuit is used for converting the induced electrical signal into a charging electrical signal; and charging the equipment to be charged through the charging electric signal.
10. A device to be charged according to claim 9,
the direction of the first magnetic pole of the second magnet points to the center of the distribution shape of the second magnet; the direction of the second magnetic pole of the second magnet is opposite to the direction of the first magnetic pole of the second magnet.
11. A device to be charged according to claim 9 or 10, wherein the second magnet satisfies at least one of:
under the condition that the first magnet and the second magnet are aligned and adsorbed, the magnetic attraction force between the first magnet and the second magnet is larger than or equal to a preset magnetic force value;
the magnetic field intensity of the second magnet is smaller than a preset magnetic field intensity value;
under the condition that the first magnet and the second magnet are aligned and adsorbed, the mutual inductance between the receiving coil and the transmitting coil is larger than a preset mutual inductance value; and the coupling coefficient between the receiving coil and the transmitting coil is larger than a preset coupling value.
12. A device to be charged according to claim 11,
under the condition that the first magnet and the second magnet are in aligned adsorption, the magnet spacing between the first magnet and the second magnet is inversely related to the magnetic attraction force; a magnet spacing between the first magnet and the second magnet is positively correlated with the mutual inductance; a magnet pitch between the first magnet and the second magnet is positively correlated with the coupling coefficient.
13. A device to be charged according to claim 12,
the thickness of the second magnet is positively correlated with the magnetic attraction force;
the thickness of the second magnet is less than or equal to the thickness of the receiving coil.
14. A device to be charged according to any of claims 9-13,
the distribution area corresponding to the distribution shape of the second magnet surrounds the distribution area of the receiving coil.
15. A device to be charged according to claim 14,
the distribution shape of the second magnets is in a second ring shape.
16. A device to be charged according to claim 15,
the second magnet includes: n magnet blocks; the n magnet blocks are arranged at equal intervals according to the shape of the second circular ring, or the n magnet blocks are spliced to form the second magnet; wherein n is a positive integer greater than or equal to 3.
17. An electrical charging system, comprising: the charging system comprises a wireless charging device and equipment to be charged;
the wireless charging device comprises a base; a transmitting coil and a first magnet are arranged in the base;
the equipment to be charged comprises a receiving coil, a second magnet and a receiving circuit; wherein,
the first magnet is used for aligning and adsorbing the second magnet when the base contacts the equipment to be charged; the distribution shape of the first magnets and the distribution shape of the second magnets are both symmetrical; the magnetization direction of the first magnet is on the plane where the first magnet is located; the magnetization direction of the second magnet is on the plane where the second magnet is located;
the transmitting coil is used for generating an induction electromagnetic field based on a coil alternating current signal under the condition that the first magnet is aligned with and attracted to the second magnet;
the receiving coil is used for generating an induced electric signal based on the induced electromagnetic field under the condition that the first magnet is aligned with and attracted to the second magnet;
the receiving circuit is used for converting the induced electrical signal into a charging electrical signal; and charging the equipment to be charged through the charging electric signal.
18. The charging system of claim 17,
the wireless charging device further comprises an adapter; the base and the adapter are connected through a wire;
the adapter is used for converting an alternating current signal provided by a power supply into a direct current signal; and generating a coil alternating current signal based on the direct current signal, and transmitting the coil alternating current signal to the transmitting coil.
19. A charging method applied to the wireless charging apparatus according to any one of claims 1 to 8, comprising:
generating a coil alternating current signal based on an alternating current signal provided by a power supply, and transmitting the coil alternating current signal to a transmitting coil;
under the condition that a first magnet is aligned with and adsorbs a second magnet in the equipment to be charged, generating an induction electromagnetic field based on the coil alternating current signal through a transmitting coil, and enabling a receiving coil in the equipment to be charged to generate a charging electric signal based on the induction electromagnetic field, so that the equipment to be charged is charged; the distribution shape of the first magnets is a symmetrical shape; the magnetization direction of the first magnet is on the plane where the first magnet is located.
20. A charging method, applied to the device to be charged according to any one of claims 9 to 16, comprising:
under the condition that the second magnet is aligned to and attached to the first magnet, generating an induced electric signal through a receiving coil based on an induced electromagnetic field of a transmitting coil in a wireless charging device; the distribution shape of the second magnets is a symmetrical shape; the magnetization direction of the second magnet is on the plane where the second magnet is located;
converting the induced electrical signal into a charging electrical signal through a receiving circuit;
and charging the equipment to be charged through the charging electric signal.
21. A wireless charging device, comprising:
a first memory for storing executable instructions;
a first processor, the first processor comprising: a device control chip; for implementing the method of claim 19 when executing executable instructions stored in the first memory.
22. An apparatus to be charged, comprising:
a second memory for storing executable instructions;
a second processor, the second processor comprising: a communication control chip; for implementing the method of claim 20 when executing executable instructions stored in the second memory.
23. A storage medium storing one or more programs, the one or more programs executable by one or more first processors to implement the method of claim 19.
24. A storage medium storing one or more programs, the one or more programs executable by one or more second processors to implement the method of claim 20.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110190028.6A CN114977544A (en) | 2021-02-18 | 2021-02-18 | Wireless charging device, device to be charged, charging system, method, and storage medium |
| PCT/CN2022/072491 WO2022174707A1 (en) | 2021-02-18 | 2022-01-18 | Wireless charging apparatus, device to be charged, charging system and method, and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110190028.6A CN114977544A (en) | 2021-02-18 | 2021-02-18 | Wireless charging device, device to be charged, charging system, method, and storage medium |
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| CN114977544A true CN114977544A (en) | 2022-08-30 |
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| WO2015161370A1 (en) * | 2014-04-26 | 2015-10-29 | Elix Wireless Charging Systems Inc. | Magnetic field configuration for a wireless energy transfer system |
| CN212162859U (en) * | 2020-05-27 | 2020-12-15 | 陈涛 | Portable electronic equipment protective sheath |
| CN112290636A (en) * | 2020-11-05 | 2021-01-29 | 伍本国 | Multi-magnetic-pole positioning wireless flash charger |
| CN112350412A (en) * | 2020-11-25 | 2021-02-09 | 伍本国 | Scheme for replacing apple with S, N magnetic poles on 4-square-millimeter plane |
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