WO2021249142A1 - 无线充电线圈组件及充电设备 - Google Patents

无线充电线圈组件及充电设备 Download PDF

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Publication number
WO2021249142A1
WO2021249142A1 PCT/CN2021/094661 CN2021094661W WO2021249142A1 WO 2021249142 A1 WO2021249142 A1 WO 2021249142A1 CN 2021094661 W CN2021094661 W CN 2021094661W WO 2021249142 A1 WO2021249142 A1 WO 2021249142A1
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WO
WIPO (PCT)
Prior art keywords
wireless charging
pcb
charging coil
coil assembly
pad
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PCT/CN2021/094661
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English (en)
French (fr)
Inventor
管恩平
王家俊
周进京
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深圳市云顶信息技术有限公司
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Publication of WO2021249142A1 publication Critical patent/WO2021249142A1/zh

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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
    • 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
    • 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

Definitions

  • This application relates to the field of wireless charging technology, for example, to a wireless charging coil assembly and a charging device.
  • wireless charging components have low charging efficiency for small-sized products and poor user experience.
  • the reason is the small size of the protective product itself.
  • the wireless receiving coil is placed inside the personal protective product. Due to the small internal space of the personal protective product, the diameter of the receiving coil is small, and the distance between the receiving coil and the transmitting coil is long, so Wireless charging has high transmission loss and low efficiency, and due to the small diameter of the coil, it cannot be adapted to chargers that meet the Qi wireless charging standard.
  • the present application provides a wireless charging coil assembly and charging equipment, which are suitable for small electronic products and improve charging efficiency.
  • a wireless charging coil assembly which includes a first pad, a second pad and a multilayer PCB wiring layer; at least two PCB wiring layers in the multilayer PCB wiring layer are provided with coils, and at least two layers The coils corresponding to the PCB trace layer are connected in series with each other to form a wireless charging coil; the wireless charging coil includes a first end and a second end, the first end is connected to the first pad, and the second end is connected to the The second pad is connected.
  • a charging device including the above-mentioned wireless charging coil assembly, and further including a frame, the wireless charging coil assembly and the frame are an integrated design structure, and the wireless charging coil assembly is embedded in the housing
  • the coil of the wireless charging coil assembly is directly connected with the wireless charging receiving device or the wireless charging transmitting device; or, it further includes a rack, and the wireless charging coil assembly is directly connected to the outer surface of the rack.
  • FIG. 1 is a schematic diagram of an embodiment of the wireless charging coil assembly of this application
  • FIG. 2 is a schematic diagram of the multilayer structure of the wireless charging coil assembly of this application.
  • FIG. 3 is a schematic diagram of some parts of an embodiment of the wireless charging coil assembly of this application.
  • Figure 4 is an enlarged view of A in Figure 3;
  • Figure 5 is a bottom view of the wireless charging coil assembly in Figure 3;
  • FIG. 6 is a schematic diagram of an implementation manner of the charging device of this application.
  • Fig. 7 is an exploded view of the charging device in Fig. 6.
  • 100-wireless charging coil assembly 110-PCB lead layer; 111-first pad; 112-second pad; 120-PCB wiring layer; 121-PCB first wiring layer; 122-PCB first wiring layer Two wiring layers; 130-coil; 131-first coil; 1311-third end; 1312-fourth end; 132-second coil; 1321-fifth end; 1322-sixth end; 140-wireless charging coil 141-first end; 142-second end; 150-PCB substrate layer; 160-flying wire; 200-charging equipment; 210-waterproof glue; 220-magnetic sheet; 230-mounting frame; 231-sealing groove; 232 -Sealing ring.
  • the directional indication is only used to explain in a certain posture (as shown in the figure) If the relative positional relationship, movement situation, etc. of the multiple components below, if the specific posture changes, the directional indication will also change accordingly.
  • FIG. 1 is a schematic diagram of an embodiment of the multilayer structure of the wireless charging coil assembly of this application.
  • the wireless charging coil assembly 100 includes a first pad 111, a second pad 112, and a multilayer printed circuit board (Printed Circuit Board, PCB) wiring layer 120.
  • the PCB wiring layer 120 is provided with a coil 130 ,
  • the multilayer coils 130 are connected in series with each other to form a wireless charging coil 140.
  • the wireless charging coil 140 includes a first end 141 and a second end 142.
  • the first end 141 is connected to the first pad 111, and the second end 142 is connected to the second pad 112 to form a complete wireless charging coil 140. structure.
  • the wireless charging coil assembly 140 includes a first pad 111, a second pad 112, and a multilayer PCB trace layer 120; at least two PCB trace layers in the multilayer PCB trace layer 120 120 is provided with a coil 130.
  • the coils 130 corresponding to the at least two PCB wiring layers 120 are connected in series to form a wireless charging coil 140; the wireless charging coil 140 includes a first end 141 and a second end 142. One end 141 is connected to the first pad 111, and the second end 142 is connected to the second pad 112.
  • the wireless charging coil assembly 140 includes a first pad 111, a second pad 112, and at least two PCB trace layers 120; at least two of the PCB trace layers 120 are provided with coils 130, The coils 130 are connected in series to form a wireless charging coil 140; the wireless charging coil 140 includes a first end 141 and a second end 142. The first end 141 is connected to the first pad 111, and the first end 141 is connected to the first pad 111. The two ends 142 are connected to the second pad 112.
  • a coil is arranged on the PCB wiring layer, and the multilayer coils are connected in series to form a wireless charging coil.
  • the wireless charging coil includes a first terminal and a second terminal. The first end is connected to the first pad, and the second end is connected to the second pad to form a three-dimensional structure with a multilayer wireless charging coil, suitable for small electronic products, with high charging efficiency and adaptability Strong wireless charging coil assembly.
  • This embodiment does not limit the number of first ends 141 and second ends 142 on the wireless charging coil 140, nor does it limit the number of first pads 111 and second pads 112; it also does not limit the PCB layout of the wireless charging coil assembly 100.
  • the number of wire layers 120 does not limit the number of coils 130 provided on the PCB wire layer 120.
  • the multilayer PCB wire layer 120 can be two or more layers, which can be increased or decreased as needed during the application process. As long as the function of forming a complete wireless charging coil 140 can be satisfied.
  • each layer of coils 130 is connected in series to form the wireless charging coil 140 through a combination of one or more of vias, blind holes, and buried holes; both ends of the wireless charging coil 140 pass through One or a combination of one or more of a line, a via hole, a blind hole, and a buried hole are connected to the first pad 111 and the second pad 112; the via hole, the blind hole and the The buried holes are all metallized.
  • each layer of coils 130 is connected in series to form a wireless charging coil 140 through a combination of one or more of metallized vias, blind holes, and buried blind holes.
  • the two ends of the wireless charging coil 140 pass through lead wires.
  • a combination of one or more of vias, blind vias, and buried vias, all of which have been metallized, are connected to the first pad 111 and the second pad 112, thereby making the wireless charging coil assembly 100 has compact structure, stable and reliable connection, overall appearance and good integration.
  • the PCB trace layer 120 includes a PCB first trace layer 121 and a PCB second trace layer 122, the PCB first trace layer 121 is provided with a first coil 131, and the PCB second trace layer A second coil 132 is provided on the wiring layer 122;
  • the first coil 131 includes a third end 1311 and a fourth end 1312, the third end 1311 is located outside the first coil 131, and the fourth end 1312 is located inside the first coil 131, so The first end passes through the second wiring layer of the PCB and the lead layer of the PCB, and is connected to the first pad;
  • the second coil 132 includes a fifth end 1321 and a sixth end 1322, the fifth end 1321 is located outside the second coil 132, and the sixth end 1322 is located inside the second coil 132, so The fourth end passes through the second wiring layer of the PCB and is connected to the fifth end 1321, so that the first coil 131 and the second coil 132 are connected to form the wireless charging coil 140;
  • the sixth terminal 1322 is connected to the second pad 112.
  • the PCB wiring layer 120 includes a PCB first wiring layer 121 and a PCB second wiring layer 122, the PCB first wiring layer 121 is provided with a first coil 131, and the PCB A second coil 132 is provided on the second wiring layer 122;
  • the first coil 131 includes a third end 1311 and a fourth end 1312, the third end 1311 is located outside the first coil 131, and the fourth end 1312 is located inside the first coil 131, so The third end 1311 passes through the PCB first wiring layer 121 and the PCB lead layer 110, and is connected to the first end 141;
  • the second coil 132 includes a fifth end 1321 and a sixth end 1322, the fifth end 1321 is located outside the second coil 132, and the sixth end 1322 is located inside the second coil 132, so The fifth end 1321 passes through the PCB second wiring layer 122 and is connected to the third end 1311, so that the first coil 131 and the second coil 132 are connected to form the wireless charging coil 140;
  • the sixth end 1322 is connected to the second end 142.
  • it further includes a PCB substrate layer 150 and a PCB lead layer 110.
  • the outside of the PCB substrate layer 150 is provided with insulation, and the first pad 111 and the second pad 112 are provided on the PCB.
  • the wireless charging coil assembly 100 is the PCB substrate layer 150 and the PCB lead layer 110 in order from outside to inside; both ends of the wireless charging coil 140 are connected to the first pad 111 respectively It is connected to the second pad 112.
  • a PCB wiring layer 120 can be provided between the PCB substrate layer 150 and the PCB lead layer 110.
  • FIG. 2 is a schematic diagram of another embodiment of the multilayer structure of the wireless charging coil assembly of this application
  • FIG. 3 is a schematic diagram of some components in an embodiment of the wireless charging coil assembly of this application
  • FIG. 4 is the position A in FIG. 3
  • Figure 5 is a bottom view of the wireless charging coil assembly in Figure 3, referring to Figures 1 to 5,
  • the wireless charging coil assembly 100 is a multi-layer structure as a whole, with a PCB substrate layer 150 and PCB in turn from the outside to the inside
  • the first wiring layer 121, the PCB second wiring layer 122, the PCB lead layer 110, and optionally, the outside of the PCB substrate layer 150 are insulated to ensure that the wireless charging coil assembly 100 has good reliability.
  • the PCB first wiring layer 121 is provided with a first coil 131
  • the PCB second wiring layer 122 is provided with a second coil 132
  • the PCB lead layer 110 is provided with a first pad 111 and a second pad 112.
  • a pad 111 and a second pad 112 are connected in series through the first coil 131 and the second coil 132.
  • the first coil 131 includes a third end 1311 and a fourth end 1312, the third end 1311 is located outside the first coil 131, the fourth end 1312 is located inside the first coil 131, and the third end 1311 passes through the second trace of the PCB
  • the layer 122 and the PCB lead layer 110 are connected to the first pad 111 to connect the first coil 131 to the first pad 111.
  • the second coil 132 includes a fifth end 1321 and a sixth end 1322, the fifth end 1321 is located outside the second coil 132, the sixth end 1322 is located inside the second coil 132, and the second end 142 passes through the second trace of the PCB
  • the layer 122 is connected to the fifth end 1321, and the sixth end 1322 is connected to the second pad 112 through the PCB lead layer 110, thereby connecting the first coil 131, the second coil 132, the first pad 111 and the second pad 112 Connected in series is a wireless charging coil assembly 100 with a double-layer wireless charging coil 140 and high charging efficiency.
  • the wireless charging coil assembly 100 After the double-layer wireless charging coil assembly 100 is electrically connected to the transmitting circuit or the receiving circuit, sufficient magnetic induction is generated in the wireless charging coil assembly 100 to ensure the charging efficiency of the wireless charging coil assembly 100.
  • the wireless charging coil assembly 100 provided in this embodiment has a smaller volume and a higher charging efficiency.
  • the first coil 131 is formed on the copper foil on the inner side of the PCB substrate layer 150 by means of image transfer
  • the second coil 132 is formed on the inner copper foil on the second wiring layer 122 of the PCB by means of image transfer.
  • the process of the hard circuit board forms the wireless charging coil 140 on the PCB, so that the wireless charging coil assembly 100 has a compact structure and high space utilization.
  • the second wiring layer 122 of the PCB and the PCB lead layer 110 are preset with perforations for connecting the first coil 131 or the second coil 132, the first pad 111, the second pad 112, and the first coil 131 , And the second coil 132 are connected by a flying wire 160.
  • the flying lead 160 is located on the top of the first coil 131 and the second coil 132, and the connection structure is simple and compact.
  • the perforation is filled with conductive glue, and the conductive glue is cured to connect the adjacent flying lead 160 and the first coil 131, or the flying lead 160 and the second coil 132 through the step of heating and drying, so that the first pad 111 and the second coil are cured.
  • the two pads 112, the flying lead 160, the first coil 131, and the second coil 132 are connected as an integral structure.
  • multiple sets of three-dimensionally distributed first coils 131 and/or second coils 132 are connected in series between the PCB substrate layer 150 and the PCB lead layer 110 to form a multilayer wireless charging coil 140 structure to ensure the wireless charging coil
  • the 140 can generate sufficient inductance when adapting small-sized components to ensure that the wireless charging coil assembly 100 can reliably and efficiently complete the charging operation.
  • the wireless charging coil assembly 100 of the present application can be adapted to the Qi charging standard wireless charging device, and the diameter of the wireless charging coil 140 can also be adjusted according to actual use needs, so that the wireless charging coil 140 can be compatible with the corresponding wireless transmitting device or wireless receiving device. match.
  • the wireless charging coil assembly 100 of the present application can be compatible with wireless charging devices of multiple standards, and the diameter of the wireless charging coil 140 can be adjusted according to actual needs during the application process.
  • the versatility of the wireless charging coil assembly 100 of the present application can be improved.
  • the diameter of the wireless charging coil 140 is maximized during the application process.
  • the contact distance between the coil and the charging device is designed to minimize the diameter of the wireless charging coil 140 of the wireless charging coil assembly 100 of the present application, and the distance between the wireless charging coil assembly 100 and the charging device is minimized, thereby ensuring the charging efficiency , To shorten the charging time and improve the user experience.
  • a protective sheet is further provided on the outside of the wireless charging coil assembly 100.
  • the protective sheet is a thin-walled part that is transparent or has a color or pattern, which protects the wireless charging coil assembly 100 and has aesthetics. So that users have a good experience.
  • the wireless charging coil assembly 100 further includes a housing, the wireless charging coil 140 is arranged outside the housing, and the first pad 111 and the second pad 112 are arranged on the housing. in vivo.
  • FIG. 6 is a schematic diagram of an embodiment of the charging device provided by this application.
  • FIG. 7 is an exploded view of the charging device in FIG. 6.
  • the charging device 200 includes the wireless charging coil assembly 100 of any one of the above , It also includes a housing (not shown in the figure).
  • the wireless charging coil assembly 100 and the housing are an integrated design structure, so that the wireless charging coil assembly 100 is embedded in the housing, so that the wireless charging coil 140 of the wireless charging coil assembly 100 It can be directly connected to a wireless charging receiving device or a wireless charging transmitting device, reducing the distance between the wireless charging coil assembly 100 and the charging device 200, and improving the charging efficiency of the wireless charging coil assembly 100.
  • the charging device 200 includes the wireless charging coil assembly 100 of any one of the above, and further includes a frame, the wireless charging coil assembly 100 and the frame are an integrated design structure, and the wireless charging coil assembly 100 is embedded in the housing, so that the coil of the wireless charging coil assembly 100 can be directly connected to a wireless charging receiving device or a wireless charging transmitting device; or, it also includes a rack, and the wireless charging coil assembly is directly connected to On the outer surface of the frame.
  • the wireless charging coil assembly 100 and the housing are connected to form an integrated structure by bonding, clamping or threading; a magnetic sheet 220 is also provided on the inward side of the wireless charging coil assembly 100.
  • the magnetic sheet 220 is connected to the housing, and the magnetic sheet 220 is used to enhance the inductance generated by the wireless charging coil 140 when energized, and improve the performance of the wireless charging coil assembly 100.
  • the charging device 200 includes a housing (not shown), and the wireless charging coil assembly 100 is directly connected to the outer surface of the housing, so that the diameter of the wireless charging coil 140 in the wireless charging coil assembly 100 on the housing is Maximize, ensure high-efficiency wireless charging design for small-size products.
  • the diameter of the brush handle is small, and the wireless charging coil assembly 100 is directly arranged inside the housing.
  • the diameter of the wireless charging coil 140 is limited by the inner diameter of the brush handle, and it is difficult to connect the wireless charging coil 140 The larger the diameter of, seriously affects the efficiency of wireless charging.
  • due to the wall thickness of the housing the distance between the wireless charging coil assembly 100 and the charging device 200 is increased.
  • the charging device 200 further includes an overall cylindrical mounting frame 230, and the wireless charging coil assembly 100 is adhered to the end of the mounting frame 230 by waterproof glue 210 to maximize the coil diameter to ensure wireless charging performance.
  • the mounting frame 230 is also provided with a sealing groove 231, and a sealing ring 232 is provided in the sealing groove 231, so that after the mounting frame 230 is fitted with the host, it has a waterproof function and ensures the working of the wireless charging coil assembly 100 and the host reliability.
  • the present application maximizes the design of the coil and makes full use of the three-dimensional space in a limited space to form a multilayer wireless charging coil structure, and the wireless charging coil assembly 100 is directly connected to the outside of the charging device 200 housing to enable wireless charging.
  • the distance is minimized, thereby solving the problem of stable and efficient wireless charging of small-sized electronic products, and the diameter of the wireless charging coil 140 in the wireless charging coil assembly 100 is made It is compatible with the Qi wireless charging standard, which greatly improves the types of wireless chargers that the charging device 200 of the present application can adapt to, and is convenient for operators to use.

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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

本申请公开了一种无线充电线圈组件及充电设备，无线充电线圈组件包括第一焊盘、第二焊盘和多层印制电路板PCB走线层；多层PCB走线层中至少两层PCB走线层设有线圈，至少两层PCB走线层对应的线圈之间相互串联形成无线充电线圈；无线充电线圈包括第一端和第二端，第一端与第一焊盘连接，第二端与第二焊盘连接。

Description

无线充电线圈组件及充电设备
本申请要求在2020年06月08日提交中国专利局、申请号为202010512599.2的中国专利申请的优先权，该申请的全部内容通过引用结合在本申请中。
技术领域
本申请涉及无线充电技术领域，例如涉及一种无线充电线圈组件及充电设备。
背景技术
随着技术的发展，无线充电在个人护理类产品上的应用也越来越广泛。但无线充电组件对于小尺寸的产品充电效率低，使用体验差。究其原因是个护类产品自身尺寸小，相关技术中将无线接收线圈放置在个护产品内部，由于个护产品内部空间狭小，接收线圈的直径小，而且接收线圈距离发射线圈的距离远，使得无线充电传输损耗大，效率低，并且由于线圈直径小不能与符合Qi无线充电标准的充电器适配。
因此，如何在狭小空间内，小尺寸产品上设计无线充电组件成为行业关注的焦点。
发明内容
本申请提供一种无线充电线圈组件及充电设备，以适用于小型电子产品，提高充电效率。
提供一种无线充电线圈组件，包括第一焊盘、第二焊盘和多层PCB走线层；所述多层PCB走线层中的至少两层PCB走线层设有线圈，至少两层PCB走线层对应的线圈之间相互串联形成无线充电线圈；所述无线充电线圈包括第一端和第二端，所述第一端与所述第一焊盘连接，所述第二端与所述第二焊盘连接。
还提供一种充电设备，包括上述的无线充电线圈组件，还包括机架，所述无线充电线圈组件与所述机架为整体化设计结构，所述无线充电线圈组件嵌设在所述壳体中，使得所述无线充电线圈组件的线圈直接与无线充电接收装置或无线充电发射装置连接；或者，还包括机架，所述无线充电线圈组件直接连接在所述机架的外表面上。
附图说明
图1为本申请无线充电线圈组件的一种实施方式的示意图；
图2为本申请无线充电线圈组件的多层结构的示意图；
图3为本申请无线充电线圈组件的一种实施方式部分部件的示意图；
图4为图3中A处的放大图；
图5为图3中无线充电线圈组件的仰视图；
图6为本申请充电设备的一种实施方式的示意图；
图7为图6中充电设备的爆炸图。
图中：100-无线充电线圈组件；110-PCB引线层；111-第一焊盘；112-第二焊盘；120-PCB走线层；121-PCB第一走线层；122-PCB第二走线层；130-线圈；131-第一线圈；1311-第三端；1312-第四端；132-第二线圈；1321-第五端；1322-第六端；140-无线充电线圈；141-第一端；142-第二端；150-PCB基板层；160-飞线；200-充电设备；210-防水胶；220-磁片；230-安装架；231-密封槽；232-密封圈。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述，所描述的实施例仅仅是本申请的一部分实施例，而不是全部的实施例。
若本申请实施例中有涉及方向性指示(诸如根据上、下、左、右、前、后……)，则该方向性指示仅用于解释在某一特定姿态(根据附图所示)下多个部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。
另外，若本申请实施例中有涉及“第一”、“第二”等的描述，则该“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。另外，多个实施例之间的技术方案可以相互结合，但是必须是以能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本申请要求的保护范围之内。
图1为本申请无线充电线圈组件的多层结构的一种实施方式的示意图。参考图1，无线充电线圈组件100包括第一焊盘111、第二焊盘112和多层印制电 路板(Printed Circuit Board，PCB)走线层120，PCB走线层120上设有线圈130，多层线圈130之间相互串联形成无线充电线圈140。无线充电线圈140包括第一端141和第二端142，第一端141与第一焊盘111连接，第二端142与第二焊盘112连接，以形成用于构成无线充电线圈140的完整结构。
在一实施例中，无线充电线圈组件140包括第一焊盘111、第二焊盘112和多层PCB走线层120；所述多层PCB走线层120中的至少两层PCB走线层120设有线圈130，所述至少两层PCB走线层120对应的线圈130之间相互串联形成无线充电线圈140；所述无线充电线圈140包括第一端141和第二端142，所述第一端141与所述第一焊盘111连接，所述第二端142与所述第二焊盘112连接。
在一实施例中，无线充电线圈组件140包括第一焊盘111、第二焊盘112和至少两层PCB走线层120；所述PCB走线层120中至少其中两层设有线圈130，所述线圈130之间相互串联形成无线充电线圈140；所述无线充电线圈140包括第一端141和第二端142，所述第一端141与所述第一焊盘111连接，所述第二端142与所述第二焊盘112连接。
通过设置第一焊盘、第二焊盘和至少两层PCB走线层，PCB走线层上设置线圈，多层线圈之间相互串联形成无线充电线圈，无线充电线圈包括第一端和第二端，第一端与第一焊盘连接，第二端与第二焊盘连接形成一种立体结构的具有多层无线充电线圈的，适用于小型电子产品的，充电效率高，且适配性强的无线充电线圈组件。
本实施例不限制无线充电线圈140上第一端141和第二端142的数量，也不限制第一焊盘111和第二焊盘112的数量；还不限制无线充电线圈组件100中PCB走线层120的数量，也不限制PCB走线层120上设置的线圈130的数量，多层PCB走线层120可以是两层及两层以上，在应用过程中可根据需要进行增加或减少，只要能够满足构成完整无线充电线圈140的功能即可。
在一实施例中，每层线圈130之间通过过孔、盲孔、埋孔中的一种或多种的组合串联形成所述无线充电线圈140；所述无线充电线圈140的两端通过走线、过孔、盲孔、埋孔中的一种或多种的组合，与所述第一焊盘111和所述第二焊盘112连接；所述过孔、所述盲孔和所述埋孔均经过金属化处理。
可选地，每层线圈130之间通过经过金属化处理的过孔、盲孔、埋盲孔中的一种或多种的组合串联形成无线充电线圈140，无线充电线圈140的两端通过引线，以及均经过金属化处理的过孔、盲孔、埋孔中的一种或多种的组合，与所述第一焊盘111、所述第二焊盘112连接，从而使得无线充电线圈组件100结构紧凑，连接稳定可靠，整体美观具有良好的一体性。
在一实施例中，PCB走线层120包括PCB第一走线层121和PCB第二走线层122，所述PCB第一走线层121上设有第一线圈131，所述PCB第二走线层122上设有第二线圈132；
所述第一线圈131包括第三端1311和第四端1312，所述第三端1311位于所述第一线圈131的外侧，所述第四端1312位于所述第一线圈131的内侧，所述第一端穿过所述PCB第二走线层和所述PCB引线层，与所述第一焊盘连接；
所述第二线圈132包括第五端1321和第六端1322，所述第五端1321位于所述第二线圈132的外侧，所述第六端1322位于所述第二线圈132的内侧，所述第四端穿过所述PCB第二走线层与所述第五端1321连接，以使得所述第一线圈131与所述第二线圈132连接形成所述无线充电线圈140；
所述第六端1322与所述第二焊盘112连接。
在一实施例中，所述PCB走线层120包括PCB第一走线层121和PCB第二走线层122，所述PCB第一走线层121上设有第一线圈131，所述PCB第二走线层122上设有第二线圈132；
所述第一线圈131包括第三端1311和第四端1312，所述第三端1311位于所述第一线圈131的外侧，所述第四端1312位于所述第一线圈131的内侧，所述第三端1311穿过所述PCB第一走线层121和所述PCB引线层110，与所述第一端141连接；
所述第二线圈132包括第五端1321和第六端1322，所述第五端1321位于所述第二线圈132的外侧，所述第六端1322位于所述第二线圈132的内侧，所述第五端1321穿过所述PCB第二走线层122与所述第三端1311连接，以使得所述第一线圈131与所述第二线圈132连接形成所述无线充电线圈140；
所述第六端1322与所述第二端142连接。
在一实施例中，还包括PCB基板层150和PCB引线层110，所述PCB基板层150的外侧为绝缘设置，所述第一焊盘111和所述第二焊盘112设置在所述PCB引线层110上，所述无线充电线圈组件100从外到内依次为所述PCB基板层150和所述PCB引线层110；所述无线充电线圈140的两端分别与所述第一焊盘111和所述第二焊盘112连接。所述PCB基板层150和所述PCB引线层110之间能够设置PCB走线层120。
图2为本申请无线充电线圈组件的多层结构的另一种实施方式的示意图，图3为本申请无线充电线圈组件的一种实施方式中部分部件的示意图，图4为图3中A处的放大图，图5为图3中无线充电线圈组件的仰视图，参考图1至图5，无线充电线圈组件100，整体为多层结构，从外到内依次设有PCB基板层 150、PCB第一走线层121、PCB第二走线层122、PCB引线层110，可选地，PCB基板层150的外侧为绝缘设置，保障无线充电线圈组件100具有良好的可靠性。PCB第一走线层121上设有第一线圈131，PCB第二走线层122上设有第二线圈132，PCB引线层110上设有第一焊盘111和第二焊盘112，第一焊盘111、第二焊盘112通过第一线圈131和第二线圈132串联导通。第一线圈131包括第三端1311和第四端1312，第三端1311位于第一线圈131的外侧，第四端1312位于第一线圈131的内侧，第三端1311穿过PCB第二走线层122和PCB引线层110，与第一焊盘111连接，从而将第一线圈131与第一焊盘111连接。第二线圈132包括第五端1321和第六端1322，第五端1321位于第二线圈132的外侧，第六端1322位于第二线圈132的内侧，第二端142穿过PCB第二走线层122与第五端1321连接，第六端1322穿过PCB引线层110与第二焊盘112连接，从而将第一线圈131、第二线圈132、第一焊盘111和第二焊盘112串联为具有双层无线充电线圈140的，且充电效率高的无线充电线圈组件100。在一实施例中，在将双层无线充电线圈组件100与发射电路或接收电路电性连接后，使得无线充电线圈组件100内产生足够大的磁感，保障无线充电线圈组件100的充电效能，相较于普通单层无线充电线圈，本实施例提供的无线充电线圈组件100体积更小，充电效率更高。
可选地，通过影像转移手段在PCB基板层150内侧的铜箔上形成第一线圈131，通过影像转移手段在PCB第二走线层122上内侧的铜箔上形成第二线圈132，通过制造硬质电路板的工艺在PCB上形成无线充电线圈140，使得无线充电线圈组件100的结构紧凑，空间利用率高。
可选地，PCB第二走线层122、PCB引线层110上预设有用于连接第一线圈131或第二线圈132的穿孔，第一焊盘111、第二焊盘112、第一线圈131、和第二线圈132通过飞线160连接。飞线160位于第一线圈131和第二线圈132的顶部，连接结构简单紧凑。在穿孔内填充有导电胶，通过加热烘干的步骤使得导电胶固化连接相邻的飞线160与第一线圈131，或飞线160与第二线圈132，进而使得第一焊盘111、第二焊盘112、飞线160、第一线圈131、和第二线圈132连接为一体式结构。
可选地，PCB基板层150与PCB引线层110之间串联有多组呈立体式分布的第一线圈131和/或第二线圈132，进而形成多层无线充电线圈140结构，保障无线充电线圈140在适配小尺寸零部件时能够产生足够的电感，保障无线充电线圈组件100能够可靠、高效的完成充电作业。
本申请的无线充电线圈组件100能够适配Qi充电标准的无线充电装置，也可根据实际使用需要调整无线充电线圈140的直径，使得无线充电线圈140与 对应的无线发射装置或无线接收装置能够适配。在一实施例中，使得本申请的无线充电线圈组件100能够兼容多种标准的无线充电装置，在应用过程中可根据实际需要调整无线充电线圈140的直径的大小。可提高本申请的无线充电线圈组件100的通用性。
可选地，无线充电线圈140在应用过程中线圈直径做最大化处理。线圈与充电装置的接触距离做最小化设计，从而使得本申请的无线充电线圈组件100的无线充电线圈140的直径最大化，无线充电线圈组件100与充电装置的距离最小化，进而保障了充电效率，缩小充电时间，提升使用者操作体验。
可选地，在无线充电线圈组件100的外部还设置有防护薄片，防护薄片为透明或具有色彩或图案的薄壁部件，在对无线充电线圈组件100起到防护作用的同时兼具美观性，使得使用者具有良好的使用体验。
在一实施例中，无线充电线圈组件100还包括壳体，所述无线充电线圈140设置在所述壳体的外部，所述第一焊盘111、和所述第二焊盘112设置在壳体内。
图6为本申请提供的充电设备的一种实施方式的示意图，图7为图6中充电设备的爆炸图，参考图5和图6，充电设备200包括上述任一项的无线充电线圈组件100，还包括壳体(图中未示)，无线充电线圈组件100与壳体为整体化设计结构，使得无线充电线圈组件100嵌设在壳体中，使得无线充电线圈组件100的无线充电线圈140能够直接与无线充电接收装置或无线充电发射装置连接，缩小无线充电线圈组件100与充电设备200之间的距离，提升无线充电线圈组件100的充电效率。
在一实施例中，充电设备200包括上述任一项的无线充电线圈组件100，还包括机架，所述无线充电线圈组件100与所述机架为整体化设计结构，所述无线充电线圈组件100嵌设在所述壳体中，使得所述无线充电线圈组件100的线圈能够直接与无线充电接收装置或无线充电发射装置连接；或者，还包括机架，所述无线充电线圈组件直接连接在所述机架的外表面上。
在一个实施例中，无线充电线圈组件100与壳体之间通过粘接或卡接或螺纹连接为一体式结构；在无线充电线圈组件100向内的一侧还设有磁片220，磁片220与壳体连接，磁片220用于增强无线充电线圈140通电产生的电感，提升无线充电线圈组件100的效能。
在另一个实施例中，充电设备200包括壳体(图中未示)，无线充电线圈组件100直接连接在壳体的外表面，使得壳体上无线充电线圈组件100中无线充电线圈140的直径最大化，保障小尺寸产品的高效无线充电设计。在做电动牙刷产品设计时，刷柄的直径较小，直接将无线充电线圈组件100设置在壳体 内侧，一方面无线充电线圈140的直径受刷柄内径的限制，很难将无线充电线圈140的直径做大，严重影响无线充电效率，另一方面由于壳体的壁厚，增大了无线充电线圈组件100与充电设备200之间的距离。由无线充电的理论可知，在一定范围内，无线充电距离一定时，无线充电线圈140的直径越大，充电效率越高；在无线充电线圈140的直径一定时，无线充电距离越小，充电效率越高。
在一个实施例中，充电设备200还包括整体呈柱状的安装架230，无线充电线圈组件100通过防水胶210粘接在安装架230的端部，使得线圈直径最大化，以保障无线充电效能。安装架230上还设有密封槽231，密封槽231内设有密封圈232，从而使得在将安装架230与主机进行适配安装后，具有防水功能，保障无线充电线圈组件100和主机工作的可靠性。
由上述可知，本申请通过将线圈最大化设计，以及在有限空间内充分利用立体空间形成多层无线充电线圈结构，又将无线充电线圈组件100直接连接在充电设备200壳体的外部使得无线充电距离最小化，进而解决了小尺寸电子产品进行稳定、高效的无线充电的问题，又通过设置能够与小尺寸电子产品连接的安装架230，使得无线充电线圈组件100中的无线充电线圈140的直径与Qi无线充电标准兼容，大大提升了本申请充电设备200可以适配的无线充电器种类，便于操作人员的使用。
以上所述实施例的多个技术特征可以进行任意组合，为使描述简洁，未对上述实施例中的多个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。

Claims (11)

  1. 一种无线充电线圈组件，包括第一焊盘、第二焊盘和多层印制电路板PCB走线层；
    所述多层PCB走线层中的至少两层PCB走线层设有线圈，所述至少两层PCB走线层对应的线圈之间相互串联形成无线充电线圈；
    所述无线充电线圈包括第一端和第二端，所述第一端与所述第一焊盘连接，所述第二端与所述第二焊盘连接。
  2. 根据权利要求1所述的无线充电线圈组件，还包括壳体，所述无线充电线圈设置在所述壳体的外部，所述第一焊盘和所述第二焊盘设置在所述壳体内。
  3. 根据权利要求2所述的无线充电线圈组件，其中，所述至少两层PCB走线层对应的线圈之间通过过孔、盲孔、埋孔中的一种或多种的组合串联形成所述无线充电线圈；
    所述无线充电线圈的两端通过走线、过孔、盲孔、埋孔中的一种或多种的组合，与所述第一焊盘和所述第二焊盘连接；
    所述过孔、所述盲孔和所述埋孔均经过金属化处理。
  4. 根据权利要求3所述的无线充电线圈组件，还包括：PCB引线层，所述至少两层PCB走线层包括PCB第一走线层和PCB第二走线层，所述PCB第一走线层上设有第一线圈，所述PCB第二走线层上设有第二线圈；
    所述第一线圈包括第三端和第四端，所述第三端位于所述第一线圈的外侧，所述第四端位于所述第一线圈的内侧，所述第三端穿过所述PCB第一走线层和所述PCB引线层，与所述第一端连接；
    所述第二线圈包括第五端和第六端，所述第五端位于所述第二线圈的外侧，所述第六端位于所述第二线圈的内侧，所述第五端穿过所述PCB第二走线层与所述第三端连接，以使得所述第一线圈与所述第二线圈连接形成所述无线充电线圈；
    所述第六端与所述第二端连接。
  5. 根据权利要求4所述的无线充电线圈组件，还包括：PCB基板层，所述PCB基板层的外侧为绝缘设置，所述第一焊盘和所述第二焊盘设置在所述PCB引线层上，所述无线充电线圈组件从外到内依次为所述PCB基板层和所述PCB引线层；所述无线充电线圈的两端分别与所述第一焊盘和所述第二焊盘连接。
  6. 根据权利要求5所述的无线充电线圈组件，所述PCB基板层和所述PCB引线层之间设置PCB走线层。
  7. 根据权力要求1至6中任一项所述的无线充电线圈组件，其中，所述无线充电线圈组件适配Qi充电标准的无线充电装置。
  8. 根据权力要求1至7中任一项所述的无线充电线圈组件，其中，所述无线充电线圈组件的外部设有防护薄片，所述防护薄片为透明或具有色彩或具有图案的薄壁部件。
  9. 一种充电设备，包括权利要求1至8中任一项所述的无线充电线圈组件，
    还包括机架，所述无线充电线圈组件与所述机架为整体化设计结构，所述无线充电线圈组件嵌设在所述壳体中，使得所述无线充电线圈组件的线圈直接与无线充电接收装置或无线充电发射装置连接；或者，
    还包括机架，所述无线充电线圈组件直接连接在所述机架的外表面上。
  10. 根据权利要求9所述的充电设备，其中，所述无线充电线圈组件与所述壳体之间通过粘接或卡接或螺纹连接为一体式结构；所述无线充电线圈组件向内的一侧还设有磁片，所述磁片与所述壳体连接。
  11. 根据权利要求10所述的充电设备，还包括整体呈柱形的安装架，所述无线充电线圈组件通过防水胶粘接在所述安装架的端部，所述安装架上还设有密封槽，所述密封槽内设有密封圈。
PCT/CN2021/094661 2020-06-08 2021-05-19 无线充电线圈组件及充电设备 WO2021249142A1 (zh)

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CN112735770B (zh) * 2020-12-25 2022-11-18 上海安费诺永亿通讯电子有限公司 双层无线充电线圈和充电设备

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