CN112863838B - Multi-receiving self-adaptive wireless charging transmitting coil - Google Patents

Multi-receiving self-adaptive wireless charging transmitting coil Download PDF

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Publication number
CN112863838B
CN112863838B CN202110015747.4A CN202110015747A CN112863838B CN 112863838 B CN112863838 B CN 112863838B CN 202110015747 A CN202110015747 A CN 202110015747A CN 112863838 B CN112863838 B CN 112863838B
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China
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coil
relay
coils
charging
state
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CN112863838A (en
Inventor
强浩
薛宇飞
吴振裕
肖菲杭
牛辉
张柯炜
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Changzhou University
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Changzhou University
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/40—Structural association with built-in electric component, e.g. fuse
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/40—Structural association with built-in electric component, e.g. fuse
    • H01F27/402—Association of measuring or protective means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/42—Circuits specially adapted for the purpose of modifying, or compensating for, electric characteristics of transformers, reactors, or choke coils
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The invention relates to a multi-receiving self-adaptive wireless charging transmitting coil, which comprises a region detection and state detection module, a central processing unit and a coil adjusting module; the area detection and state detection module is used for detecting the position of the equipment to be charged and the charging state of the equipment to be charged in the charging area, the area detection and state detection module is connected with the central processing unit in a signal mode and used for sending the position of the equipment to be charged and the charging state of the equipment to be charged in the charging area to the central processing unit, the central processing unit is connected with the coil adjusting module in a signal mode, and the coil adjusting module is used for controlling the state of the relay. The invention can efficiently and energy-effectively complete the switching and power control of the transmitting coil.

Description

Multi-receiving self-adaptive wireless charging transmitting coil
Technical Field
The invention relates to a multi-receiving self-adaptive wireless charging transmitting coil.
Background
In recent years, with the continuous popularization of supporting wireless charging devices, the performance and quality requirements of various wireless charging devices are gradually improved, and the conventional one-to-one charging manner cannot meet the daily use requirements of people. Under user's scene, the condition that a plurality of equipment such as cell-phone, wrist-watch, earphone need charge simultaneously is frequent, and traditional wireless charger of one-to-one is not enough to satisfy user's demand in this kind of scene, seriously influences wireless convenience of charging. One-to-many wireless power designs have evolved to allow multiple devices to be charged simultaneously. Considering that the power of different devices is different, how to coordinate the power and the frequency of different coils and how to improve the transmission efficiency of a power supply is a primary problem to be solved in the wireless charging application field.
Disclosure of Invention
The invention aims to solve the technical problems that: how to efficiently and energy-effectively complete the switching and power control of the transmitting coil. To overcome these problems, the present invention provides a multi-receive adaptive wireless charging transmit coil.
The technical scheme adopted by the invention for solving the technical problems is as follows: the device comprises a region detection and state detection module, a central processing unit, a coil adjustment module and a relay; the area detection and state detection module is used for detecting the position of the equipment to be charged in the charging area and the charging state of the equipment to be charged, and is connected with the central processing unit in a signal manner, and is used for sending the position of the equipment to be charged in the charging area and the charging state of the equipment to be charged to the central processing unit, and the central processing unit is connected with the coil adjustment module in a signal manner, and the coil adjustment module is used for controlling the state of the relay;
the transmitting coil comprises a plurality of groups of regular hexagon plane coils, each group of plane coils is adjacently arranged, and each group of plane coils consists of three circles of regular hexagon closed coils which are concentrically arranged; the relay (2, 3, 7, 8, 12, 13) is arranged on the inner ring coil, the relay on the inner ring coil comprises a movable contact and two fixed contacts, one of the movable contact and the two fixed contacts is connected in series inside the inner ring coil, and the other of the two fixed contacts is connected with the relay fixed contact on the adjacent inner ring coil;
the relay (1, 4, 6, 9, 11, 14) is arranged on the middle coil, the relay on the middle coil comprises a movable contact and two fixed contacts, one of the movable contact and the two fixed contacts is connected in series inside the middle coil, and the other of the two fixed contacts is connected with the relay fixed contact on the adjacent middle coil;
and a relay (5, 10, 15) is arranged between the adjacent outer ring coils, and the relay between the adjacent outer ring coils comprises a movable contact and a stationary contact.
Further, the three-turn regular hexagonal closed coil has the same line spacing. So that it can be better connected and aligned with adjacent coils.
Further, each group of planar coils is on the same horizontal plane. All coils are on the same plane, so that connection between the coils is convenient.
Drawings
The invention will be further described with reference to the drawings and examples.
Fig. 1 is a block diagram of a multi-receive adaptive wireless charging transmit coil of the present invention;
FIG. 2 is a single coil operating block diagram of a multiple receive adaptive wireless charging transmit coil of the present invention;
FIG. 3 is a schematic diagram of multiple coil modes of operation of the multiple receive adaptive wireless charging transmit coil of the present invention;
FIG. 4 is a block diagram of the operation of multiple coils of the multiple receive adaptive wireless charging transmit coil of the present invention;
FIG. 5 is a graph showing the effect of the multi-receiver adaptive wireless charging transmitting coil of the present invention in a single coil power transmission mode;
FIG. 6 is a graph showing the power transmission effect of the multi-receiver adaptive wireless charging transmitting coil of the present invention in two coils in the operation mode;
fig. 7 is a diagram showing the effect of coil power transmission in three coil operation modes of the multi-receiving adaptive wireless charging transmitting coil of the present invention.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the invention and therefore show only the structures which are relevant to the invention.
As shown in fig. 1: the listed 3 transmitting coils are formed by arranging 3 small regular hexagonal coils;
the transmitting coil I is formed by arranging 3 small regular hexagonal coils, and each layer of coil is connected with the resonant capacitors 19, 20 and 21 in a parallel mode.
The movable contact and one fixed contact of the relay 7 are connected in series in the first layer of coil, and the other fixed contact of the relay 7 is connected with one fixed contact of the relay 3; the movable contact of the relay 8 is connected in series with one stationary contact in the first layer coil, and the other stationary contact of the relay 8 is connected with one stationary contact of the relay 12.
The movable contact and one fixed contact of the relay 6 are connected in series in the second layer of coil, and the other fixed contact of the relay 6 is connected with one fixed contact of the relay 4; the movable contact of the relay 9 is connected in series with one stationary contact in the second layer coil, and the other stationary contact of the relay 9 is connected with one stationary contact of the relay 11.
The second transmitting coil is formed by arranging 3 small regular hexagonal coils, and each layer of coil is connected with the resonant capacitors 22, 23 and 24 in a parallel mode.
The movable contact and one fixed contact of the relay 12 are connected in series in the first layer of coil, and the other fixed contact of the relay 12 is connected with one fixed contact of the relay 8; the movable contact of the relay 13 is connected in series with one stationary contact in the first layer coil, and the other stationary contact of the relay 13 is connected with one stationary contact of the relay 2.
The movable contact and one fixed contact of the relay 11 are connected in series in the second layer of coil, and the other fixed contact of the relay 11 is connected with one fixed contact of the relay 9; the movable contact of the relay 14 is connected in series with one stationary contact in the second layer coil, and the other stationary contact of the relay 14 is connected with one stationary contact of the relay 1.
The transmitting coil three is formed by arranging 3 small regular hexagonal coils, and each layer of coil is connected with the resonance capacitors 16, 17 and 18 in a parallel mode.
The movable contact and one fixed contact of the relay 2 are connected in series in the first layer of coil, and the other fixed contact of the relay 2 is connected with one fixed contact of the relay 13; the movable contact of the relay 3 is connected in series with one stationary contact in the first layer coil, and the other stationary contact of the relay 3 is connected with one stationary contact of the relay 7.
The movable contact and one fixed contact of the relay 1 are connected in series in the second layer of coil, and the other fixed contact of the relay 1 is connected with one fixed contact of the relay 14; the movable contact of the relay 4 is connected in series with one stationary contact in the second layer coil, and the other stationary contact of the relay 4 is connected with one stationary contact of the relay 6.
The relay 10 is arranged between the third layer coils of the first transmitting coil and the second transmitting coil, and the movable contact and the stationary contact of the relay 10 are respectively connected with the third layer coils of the first transmitting coil and the second transmitting coil.
The relay 15 is arranged between the third layer coils of the second transmitting coil and the third transmitting coil, and the movable contact and the stationary contact of the relay 15 are respectively connected with the third layer coils of the second transmitting coil and the third transmitting coil.
The relay 5 is arranged between the third layer of coils of the third transmitting coil and the first transmitting coil, and the movable contact and the fixed contact of the relay 5 are respectively connected with the third layer of coils of the third transmitting coil and the first transmitting coil.
As shown in fig. 2: when the wireless power supply is in the small coil working state, the operation of the mechanical structure control device of the wireless power supply is shown in the figure. In the figure, the relays arranged on the coils are relays in an on state, and the broken line parts grafted between the coils are relays in an off state. In the figure, the solid line portion is the coil in the on state, and the broken line portion is the line in the off state (in the large coil operation mode, the on state and the small coil operation mode are off). The 3 small coils are all provided with independent working circuits, and the coil adjusting and transmitting module can respectively start one small coil, two small coils or 3 small coils to start simultaneously according to actual needs so as to transmit electric energy for the charging equipment.
As shown in fig. 3: when the wireless power supply is in a large coil working state, the connection condition of the coils is shown as the figure. At this time, 4 sides of each of the 3 regular hexagonal small coils, which are close to the outside, are in a working state;
a first layer of large coil:
the relay 7 of the first transmitting coil is in a state of disconnecting the first transmitting coil, and the relay 3 of the third transmitting coil is in a state of disconnecting the third transmitting coil; and the first layer of large coils of the first transmitting coil and the third transmitting coil are in an on state.
The relay 2 of the transmitting coil III is in a state of disconnecting the transmitting coil III, and the relay 13 of the transmitting coil II is in a state of disconnecting the transmitting coil II; and the first layer large coils of the third transmitting coil and the second transmitting coil are in an on state.
The relay 8 of the first transmitting coil is in a state of disconnecting the first transmitting coil, and the relay 12 of the second transmitting coil is in a state of disconnecting the second transmitting coil; and the first layer of large coils of the first transmitting coil and the second transmitting coil are in an on state.
Second layer large coil:
the relay 6 of the first transmitting coil is in a state of disconnecting the first transmitting coil, and the relay 4 of the third transmitting coil is in a state of disconnecting the third transmitting coil; and the first layer of large coils of the transmitting coil I and the transmitting coil III are in an on state.
The relay 1 of the transmitting coil III is in a state of disconnecting the transmitting coil III, and the relay 14 of the transmitting coil II is in a state of disconnecting the transmitting coil II; and the second layer large coil of the third transmitting coil and the second transmitting coil is in an on state.
The relay 11 of the second transmitting coil is in a state of disconnecting the second transmitting coil, and the relay 9 of the first transmitting coil is in a state of disconnecting the first transmitting coil; and the second transmitting coil and the first second large transmitting coil are in an on state.
Third layer large coil:
the relay 5, the relay 10 and the relay 15 are all connected, so that the third layer of coils of the first, second and third transmitting coils are communicated.
Forming a closed loop as shown. Each layer of the coil connects the coil with the resonant capacitor in parallel.
As shown in fig. 4: when the wireless power supply is in a large coil working state, the operation condition of a mechanical structure control device of the wireless power supply is shown in the figure; a relay is arranged on each layer of coils to control the opening and closing of the internal circuit, so that the outer sides of the 3 small coils are connected into a closed loop. At this time, the internal lines of the 3 small coils are in an off state due to the control of the relay, and thus do not participate in the operation. In this state, the coil adjusts the large coil on the outside of the starting of the transmitting module to transmit electrical energy for the charging device.
As shown in fig. 5: when the wireless power supply is in the small-coil operating mode, a single charging device can be charged, and a receiving coil of the charging device is positioned above a corresponding transmitting coil.
The first and third transmitting coils are not operated, the relays 11-14 of the second transmitting coil are on, the relays 5, 10, 15 are off, a closed small coil loop is formed, and when the coils are in an operating state, current passes through the inside.
As shown in fig. 6: when the wireless power supply is in a small-coil working mode, a plurality of charging devices can be charged at the same time, and the receiving coils of the charging devices are positioned above corresponding transmitting coils.
When the coil is in an operating state, current passes through the coil, and the illustrated state is that the wireless power supply charges two devices at the same time.
The first transmitting coil does not work, the second transmitting coil and the third transmitting coil work at the same time, and the relays 11-14 of the second transmitting coil are connected to form a closed small coil loop of the second transmitting coil; the relays 1-4 of the transmitting coil III are connected to form a closed small coil loop of the transmitting coil III; the relays 5, 10, 15 are now open.
The power supply has 3 transmitting coils, and can respectively and independently transmit electric energy for 3 charging devices above the transmitting coils.
The copper wires in the coil are wound by adopting a hexagonal winding method, and the coil has the same appearance as the coil and is regular hexagon.
As shown in fig. 7: when the wireless power supply is in a large coil operating mode, the receiving coil of the charging device is located in the middle region of the whole power supply. When the coil is in an operating state, a current passes through the coil. In this state, the resonant circuits of the three transmitting coils operate simultaneously, and the power of the wireless power supply reaches a maximum.
The working process of the invention is as follows:
the invention has two working modes, namely a small coil working mode and a large coil working mode. The wireless power supply starts a corresponding mode according to the actual requirement.
After the charging equipment is placed in the charging area, the area detection module detects the charging equipment and transmits the position information and the electric quantity information to the coil adjustment transmitting module. The coil adjusting and transmitting module sends out corresponding instructions according to the obtained information, the relay of the corresponding coil is controlled to be opened and closed, and the corresponding coil enters a working state after current is introduced. The bottom of each coil is loaded with a resonant circuit that will transmit electrical energy to the charging device at the appropriate frequency to charge the charging device.
When the charging device is a low-power device such as an earphone, a watch and the like, the wireless power supply starts a small-coil working mode. In the mode, if only one charging device is provided, only the coil in the corresponding area of the device is started, so that unnecessary electric energy consumption is reduced, and the device is more environment-friendly. If a plurality of charging devices are arranged, a plurality of coils can be started to charge the devices at the same time, so that more convenient experience can be brought to users.
If the charging device is a device such as a mobile phone which needs higher charging power, the wireless power supply starts a large coil working mode. With more and more mobile phones and devices supporting wireless charging and wireless rapid charging, the invention can provide two charging modes of low power and high power at the same time. In a large coil working mode, the invention can provide high-power wireless power supply output, save the charging time of a user and provide better experience.
When the charging device completes charging, a signal to stop charging is sent out according to a charging protocol. After receiving the information of stopping charging, the area detection module transmits the information to the coil adjusting and transmitting module. The coil adjusting transmitting module sends a command of stopping work to the relay of the corresponding coil, current in the coil disappears, the transmitting coil stops supplying power, and the charging process is finished.
With the above-described preferred embodiments according to the present invention as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.

Claims (3)

1. The utility model provides a receiving self-adaptation wireless transmitting coil that charges more, as wireless transmitting terminal that charges which characterized in that: the device comprises a region detection and state detection module, a central processing unit, a coil adjustment module and a relay; the area detection and state detection module is used for detecting the position of the equipment to be charged and the charging state of the equipment to be charged in the charging area, the area detection and state detection module is connected with the central processing unit in a signal manner and used for sending the position of the equipment to be charged and the charging state of the equipment to be charged in the charging area to the central processing unit, the central processing unit is connected with the coil adjusting module in a signal manner, and the coil adjusting module is used for controlling the state of the relay;
the transmitting coil comprises a plurality of groups of regular hexagon plane coils, each group of plane coils are adjacently arranged, and each group of plane coils consists of three circles of regular hexagon closed coils which are concentrically arranged;
the relay (2, 3, 7, 8, 12, 13) is arranged on the inner ring coil, the relay on the inner ring coil comprises a movable contact and two fixed contacts, one of the movable contact and the two fixed contacts is connected in series inside the inner ring coil, and the other of the two fixed contacts is connected with the relay fixed contact on the adjacent inner ring coil;
the relay (1, 4, 6, 9, 11, 14) is arranged on the middle coil, the relay on the middle coil comprises a movable contact and two fixed contacts, one of the movable contact and the two fixed contacts is connected in series inside the middle coil, and the other of the two fixed contacts is connected with the relay fixed contact on the adjacent middle coil;
and a relay (5, 10, 15) is arranged between the adjacent outer ring coils, and the relay between the adjacent outer ring coils comprises a movable contact and a stationary contact.
2. A multi-receive adaptive wireless charging transmit coil as defined in claim 1, wherein: the line spacing of the three regular hexagonal closed coils is the same.
3. A multi-receive adaptive wireless charging transmit coil as defined in claim 2, wherein: each group of planar coils is on the same horizontal plane.
CN202110015747.4A 2021-01-07 2021-01-07 Multi-receiving self-adaptive wireless charging transmitting coil Active CN112863838B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110015747.4A CN112863838B (en) 2021-01-07 2021-01-07 Multi-receiving self-adaptive wireless charging transmitting coil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110015747.4A CN112863838B (en) 2021-01-07 2021-01-07 Multi-receiving self-adaptive wireless charging transmitting coil

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CN112863838A CN112863838A (en) 2021-05-28
CN112863838B true CN112863838B (en) 2023-05-23

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107176045A (en) * 2017-04-28 2017-09-19 中惠创智无线供电技术有限公司 Dynamic induction wireless charging system and the charging system of vehicle for vehicle
CN109733215A (en) * 2018-11-29 2019-05-10 中海阳能源集团股份有限公司 A kind of highway dynamic radio charging system based on solar energy storage one

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107176045A (en) * 2017-04-28 2017-09-19 中惠创智无线供电技术有限公司 Dynamic induction wireless charging system and the charging system of vehicle for vehicle
CN109733215A (en) * 2018-11-29 2019-05-10 中海阳能源集团股份有限公司 A kind of highway dynamic radio charging system based on solar energy storage one

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