CN201349139Y - Induction type wireless charging device - Google Patents

Induction type wireless charging device Download PDF

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Publication number
CN201349139Y
CN201349139Y CNU2008202140444U CN200820214044U CN201349139Y CN 201349139 Y CN201349139 Y CN 201349139Y CN U2008202140444 U CNU2008202140444 U CN U2008202140444U CN 200820214044 U CN200820214044 U CN 200820214044U CN 201349139 Y CN201349139 Y CN 201349139Y
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primary
inductive
unit
secondary
circuit
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CNU2008202140444U
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Chinese (zh)
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保善军
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比亚迪股份有限公司
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Publication of CN201349139Y publication Critical patent/CN201349139Y/en

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Abstract

The utility model relates to an induction type wireless charging device, which comprises a primary unit and a secondary unit, wherein the primary unit consists of an oscillation circuit, a primary induction module, a controller, an electric current detecting circuit, and the secondary unit includes a secondary induction module, a rectifier filter circuit and a magnetic-sensing unit. Besides, the oscillation circuit is connected with the primary induction module, the electric current detecting circuit collects electric current signals of the primary induction module and sends the collected current signals to the controller, and the controller receives the electric current signals collected by the electric current detecting circuit, generates control signals according to the electric current signals and controls generation of electromagnetic field of the primary induction module. The induction type wireless charging device can timely control the primary induction module to be in a standby state and effectively reduce power consumption of the device.

Description

感应式无线充电装置技术领域本实用新型涉及充电装置领域,特别涉及一种感应式无线充电装置。 Inductive wireless charging TECHNICAL FIELD The present invention relates to the art charging apparatus, and particularly relates to an inductive wireless charging device. 背景技术便携式电子产品具有便于携带、使用方便等优点,手机、PDA 、 MP3 播放器等大量的便携式电子设备均使用充电电池, 一旦电池电量耗尽,就需要及时充电。 Portable electronic products are easy to carry, and easy to use, mobile phone, PDA, MP3 players and other portable electronic devices are a lot of use rechargeable batteries, once the battery runs out, you need to charge it in time. 目前通常使用的充电器在工作时都是通过导体(电源线)与负载相连接,而各个厂商生产的充电器接口各不相同,因此可能存在电安全问题,而且经常会出现插接时接头接触不良,特别是在长期使用后,可能产生接触不良等现象或故障;其次不同设备的充电接口不同,不能通用,如果用户需要对多个设备同时充电,就要连接多个充电器,造成了使用的不便。 Commonly used today charger operation is by a conductor (power supply line) is connected to the load, and each manufacturers charger interface varies, thus there may be electrical safety issues, and often occur when the joint contact plug bad, especially after long-term use may produce poor contact phenomena or failures; secondly different charging port on the device, can not be universal, if the user needs to charge multiple devices at the same time, it is necessary to connect multiple chargers, resulting in the use inconvenience. 于是一种感应式无线充电装置应运而生,利用一充电端产生一感应磁场对充电电池进行充电。 Thus an inductive wireless charging device emerged, rechargeable battery charged by a charging terminal generating an induced magnetic field. 此充电装置包括: 一电源,用以提供电能; 一检测模块,位于充电端,用以检测充电电路,并在充电电池存在时发出一激活信号; 一激活模块,连接于检测模块,用以接收激活信号后,导通一电源开关;及一感应模块,连接于激活模块,以电磁感应将电能所提供的电能转换为磁能。 This charging apparatus comprising: a power source for providing electrical energy; a detection module, located in the charging terminal for charging detection circuit, and emits an activation signal when the presence of the rechargeable battery; an activation module, connected to the detection module for receiving after activation signal, a power switch is turned on; and a sensing module, connected to the activation module, convert electric energy to the electromagnetic induction power provided by the magnetic energy. 其中,感应模块由一感应线圈组成,检测模块检测方式为电磁感应检测方式或压电感应检测方式,激活模块由金属氧化半导体开关组成。 Wherein the sensor module is composed of an induction coil, the detection module detects an electromagnetic induction method is the detection method or detection method of the piezoelectric sensor, the activation module consisting of a metal oxide semiconductor switches. 现有感应式无线充电装置对充电电池的充电状态无法实施有效监控。 Conventional inductive wireless charging device charging state for the rechargeable battery can not effectively monitor. 当充电电池充完电后,上述无线充电装置仍然处于工作状态,造成了能量的浪费。 After charging the battery, the charging, the wireless charging device is still active, resulting in a waste of energy. 同时,对于不可进行充电的非法物件缺乏充电管理,有可能会造成对不可进行充电的非法物件充电,从而导致感应式无线充电装置发热,能源的浪费。 At the same time, the object can not be charged for the illegal charging of a lack of management, there is likely to result in not charging charging illegal items, resulting in a waste of inductive wireless charging device heating, energy. 实用新型内容有鉴于此,本实用新型解决现有无线充电装置功耗较高的不足,提供了一种感应式无线充电装置,该充电装置以感应的方式有效地进行电能传输, 且装置功耗较低。 SUMMARY Accordingly, the present invention is to solve the conventional high-power wireless charging apparatus is insufficient, there is provided a wireless inductive charging device, the charging device inductively transfer power efficiently, and the power means low. 为达到上述目的,本实用新型的技术方案具体是这样实现的-一种感应式无线充电装置,包括可操作产生电磁场的初级单元;以及至少一个与初级单元分离,且适用于当所述初级单元相接近时,与所述初级单元相耦合,以接收功率的次级单元,其中:所述初级单元包括振荡电路、电流检测电路、初级感应模块、控制器;所述振荡电路和初级感应模块相连接; 所述电流检测电路采集所述初级感应模块中的电流信号并将所述电流信号送至控制器;所述控制器接收来自电流检测电路采集的电流信号,并根据所述电流信号生成控制信号,控制初级感应模块是否产生电磁场;所述次级单元包括用于接收功率的次级感应模块、整流滤波电路;所述整流滤波电路连接在次级感应模块和充电电池之间;所述充电电池的充电管理电路与次级感应模块的控制端相连接, To achieve the above object, the technical solution of the present invention is particularly achieved - an inductive wireless charging apparatus, comprising a primary unit operable to generate an electromagnetic field; and at least one separable from the primary unit, and adapted to when the primary unit when close, coupled with the primary unit to the secondary unit receives power, wherein: the primary unit comprises an oscillation circuit, a current detection circuit, a primary sensor module controller; the oscillation circuit and the primary phase sensing module ; said primary current detecting circuit acquiring the current sensing module signal and said current signal to the controller; wherein the controller receives the current signal from the current detection circuit acquired, and generating a control signal according to the current signal, the control module is the primary sensor generating an electromagnetic field; the secondary unit comprises a secondary inductive means for receiving power, the rectifier filter circuit; a rectifying and filtering circuit connected between the secondary inductive module and a rechargeable battery; the charge battery charge management circuit connected to the control terminal of the secondary sensing module, 述充电管理电路生成控制信号以控制次级感应模块是否接收功率。 Said charge management circuit generates control signals to control the secondary inductive power module is received. 本实用新型通过电流检测电路采集初级感应模块的电流信号,由控制器进行处理,经控制器上的通用输入输出输出高低电平控制信号,控制初级感应模块是否产生电磁场,从而实现当充电完成时,初级感应模块及时地处于待机状态,可以有效地降低装置的功耗。 The present invention current signal by the current detecting circuit primary inductive acquisition module, for processing by the controller, via the general purpose input output high on the low-level control signal controller, the control module is generating an electromagnetic field of the primary induction, when charging is complete in order to achieve primary sensing module in a timely manner in the standby state, power consumption of the device can be effectively reduced. 附图说明图l为本实用新型包括一初级单元的一实施例的原理示意图;图2为图1所示实施例初级单元及次级单元的原理示意图;图3为本实用新型包括一初级单元的另一实施例的原理示意图;图4为本实用新型的结构示意图; L schematic diagram of the principles of the present invention comprises an embodiment of a primary unit; FIG. 2 is a simplified schematic embodiment shown in FIG. 1 the primary unit and secondary unit of the embodiment; FIG. 3 includes a new primary unit of the present practical principle schematic of another embodiment; FIG. 4 schematic utility of the present novel configuration;

图5为本实用新型包括两个初级感应模块的一实施例的原理示意图。 Figure 5 Schematic a new embodiment includes two primary inductive modules present invention. 本实用新型的目的的实现、功能特点及优点将结合实施例,参照附图做进一歩说明。 Implementation, features and advantages of the object of the present invention with reference to examples, the drawings described with reference made into a ho.

具体实施方式 Detailed ways

请参阅图l,本实用新型一实施例的感应式无线充电装置包括可操作产生电磁场的初级单元l;以及至少一个与初级单元l分离,且适用于当所述初级单元l相接近时,与所述初级单元l相耦合,以接收功率的次级单元2。 Referring to FIG. L, the present invention is a wireless inductive charging apparatus embodiment includes means operable to generate a primary electromagnetic field l; and at least one separable from the primary unit l, and when applied to the primary unit when close to l, and l is coupled to the primary unit to the secondary unit receives the power 2.

所述初级单元包括振荡电路IO、电流检测电路12、初级感应模块ll、控制器13;所述振荡电路10和初级感应模块11相连接;所述电流检测电路12采集所述初级感应模块l 1中的电流信号并将所述电流信号送至控制器13;所述控 The primary unit includes an oscillation circuit the IO, the current detection circuit 12, the primary sensor module ll, the controller 13; the oscillation circuit 10 and the sensing module 11 is connected to the primary; the current detection circuit 12 to the primary inductive acquisition module l 1 the current signal and said current signal to the controller 13; the control

制器13接收来自电流检测电路12采集的电流信号,并根据所述电流信号生成控制信号,控制初级感应模块ll是否产生电磁场。 System 13 receives the current signal from the current detection circuit acquired 12, and according to the current signal to generate a control signal that controls whether the primary ll sensing module generates an electromagnetic field.

请一并参阅图2,初级感应模块包括初级可控开关110、发射感应线圈112。 Referring to FIG. 2, the primary inductive controllable switch 110 includes a primary module, transmitting the induction coil 112. 其中,初级可控开关110的输入端与振荡电路10相连;初级可控开关110的输出端与发射感应线圈112相连;初级可控开关110的控制端与控制器13的输出端相连接;所述电流检测电路12与发射感应线圈112相连;控制器13根据电流检测电路12采集的电流信号,控制初级可控开关110导通或截止,从而控制发射感应线圈112是否工作产生电磁场。 Wherein the primary input terminal of the controllable switch 10 is connected to the oscillation circuit 110; primary controllable switch coupled to the output terminal of the induction coil 110 and the emitter 112; a control terminal of the controllable primary switch 110 and the output terminal 13 is connected to the controller; the said current detection circuit 12 and the transmitter 112 is connected to the induction coil; and a controller 13 in accordance with the current signal detection circuit 12 is acquired, controlling the primary controllable switch 110 is turned on or off, thereby controlling the emission induction coil 112 generates an electromagnetic field is working.

如图4所示,在本实施例中,所述初级单元l被安置于具有一定面积的平板100'内,尤其发射感应线圈112分布于整个平板100'表面,能够提供足够大的充电区域使次级单元2在整个充电区域内都能接收到有效的能量。 4, in the present embodiment, the primary unit is disposed to the plate l having an area 100 'of the particular transmitter inductive coil 112 distributed throughout the plate 100' surface, capable of providing a sufficiently large area so the charging secondary unit 2 can receive an effective energy in the entire charge region.

振荡电路10将电源11提供的直流电转化为高频的交流电,并输出至发射感应线圈112,所述振荡电路10可以是常见的PWM逆变电路或专用的无线功率所述电流检测电路12由电流检测IC及其外围电路组成,如常见的 Oscillation circuit 10 convert DC power supply 11 provides a high frequency alternating current, and outputs to the transmitter inductive coil 112, the oscillation circuit 10 may be a common or a dedicated PWM inverter circuit of the wireless power current by the current detecting circuit 12 detection IC and its peripheral circuit, such as the common

MAX41XX系列。 MAX41XX series.

所述控制器13为本领域技术人员公知的单片机,有很多种选择,本实施例中优选型号W78LE365A的芯片。 The controller 13 is well known to those skilled in the microcontroller, there are many options, in the preferred embodiment of the chip type W78LE365A present embodiment.

本实施例中的次级单元包括用于接收功率的次级感应模块21、整流滤波电路22;次级感应模块包括接收感应线圈210、次级可控开关212。 The secondary unit comprises a secondary embodiment of the means for sensing the received power 21 of the present embodiment, the rectifier filter circuit 22; a secondary sensor module 210 includes a receiver induction coil, a secondary controllable switch 212.

其中次级可控开关212连接在接收感应线圈210与整流滤波电路22之间;整流滤波电路22的输出端与充电电池3相连接;次级可控开关212的控制端与充电电池3的充电管理电路31相连接,充电管理电路31生成控制信号以控制次级感应模块21是否接收功率。 Wherein the secondary controllable switch 212 is connected between the induction coil 210 receives the rectifier filter circuit 22; an output terminal of the rectifier and filter circuit 22 is connected to the rechargeable battery 3; charge control terminal controllable switch 212 of the secondary battery 3 with the charging management circuit 31 is connected to the charge management circuit 31 generates a control signal to control module 21 has received the secondary inductive power.

所述接收感应线圈210包括接收线圈及其匹配电容;该匹配电容可以与接收线圈并联,也可以和接收线圈串联,只要和接收线圈组成谐振结构即可。 The receiver 210 includes a receiving coil induction coil and the matching capacitors; the matching capacitance can be connected in parallel with the receiving coil, and receiving coil may be connected in series, as long as the receiver coils and the resonant structure results.

所述的整流滤波电路22由整流二极管、稳压二极管、滤波电容等构成。 The rectifier smoothing circuit 22 composed of a rectifier diode, a zener diode, a filter capacitor and the like. 该整流滤波电路23还可具有稳压作用,即整流滤波电路23可以包括DC-DC转换电路。 The rectifier and filter circuit 23 may also have the role of regulator, i.e. the rectifier filter circuit 23 may include a DC-DC converter circuit. 具体电路结构为本领域技术人员公知常识。 Specific circuit configuration known to those skilled in the common general knowledge.

所述次级单元2可以是接收感应线圈210、整流滤波电路23、次级可控开关212组成的薄片,薄片具有较小的尺寸以外置附件的形式连接到充电设备, 或直接集成到充电设备内部。 2 the secondary unit may be received induction coil 210, rectifier and filter circuit 23, the controllable switch 212 composed of a secondary sheet, the sheet having a smaller size connected to the charging device in the form of an external attachment or directly integrated into the charging device internal.

请参阅图3所示,在上述实施例的基础上,更进一步提出了另一感应式无线充电装置。 Please refer to FIG. 3, in the above embodiment, the further proposed another inductive wireless charging device. 所述充电装置的初级单元还包括磁感应单元14,所述次级单元还包括磁敏单元24。 The primary unit comprises a charging device further magnetic sensing unit 14, the secondary unit 24 further includes a magnetic sensing means. 所述磁敏单元24可与磁感应单元14相耦合,所述磁感应单元14的输出端与控制器13相连接,所述控制器13接收来自磁感应单元14的输出信号及电流检测电路12采集的电流信号,并根据上述信号生成控制信号, 控制初级感应模块是否产生电磁场。 The magnetic sensing unit 24 may be connected to the output terminal 13 and a controller coupled to the magnetic sensing unit 14, the magnetic induction unit 14, the controller 13 receives the current signal and the current output from the detection circuit 12 of the magnetic induction unit 14 acquired signal, and generating a control signal based on the signal, the control module if the primary inductive electromagnetic field is generated.

所述磁感应单元16可以为霍尔开关等本领域技术人员公知的磁敏器件。 The magnetic sensing unit 16 may be a Hall switch or the like well known to those skilled in the magnetosensitive device. /为了保证当附着有次级单元的充电设备放置在平板上即可由相应的发射感应线圈112工作为充电设备进行良好地充电,在发射感应线圈112的附近可以布置多个磁感应单元14,多个磁感应单元14所构成的感应区域覆盖该发射感应线圈112所占平板的区域。 / In order to ensure that when the secondary unit is attached to the charging device is placed on the plate to be well charged by the charging device to transmit a respective induction coil 112 is operated in the vicinity of the induction coil 112 may transmit a plurality of magnetic sensing units 14 are arranged, a plurality of sensing area of ​​the magnetic induction unit 14 is constituted to cover the emitter region 112 occupied by the induction coil plate. 当然,所述初级单元还可以包括电源ll,用以提供电能。 Of course, the primary unit may further include a power source ll, to provide electrical power. 所述电源与震荡电路相连接,电源11为振荡电路10及其它电路提供电能。 The oscillator circuit is connected to the power supply, the power supply 11 provides power to the oscillation circuit 10 and other circuits. 当然,电源ll可以是独立的适配器,将220V的市电转化为12V直流电,也可以是为后级电路提供电能的电源转换电路。 Of course, the power supply may be a separate adapter ll, 220V mains is converted to 12V DC, and may be supplying power to the rear stage circuit power conversion circuit. 基于第一实施例基础上提出了感应式无线充电装置的另一实施例,本实施例的充电装置包括上述第一实施例的所有部件外,次级单元还可以包括充电接口,充电接口连接在整流滤波电路23与充电电池3之间,所述充电接口具有与充电设备一致的接口类型,或者所述的充电接口提供次级单元与充电设备内部电路连接的节点。 Another embodiment is proposed based on a first wireless inductive charging apparatus according to embodiments based on the embodiments, the present embodiment includes a charging device according to all the above-described first embodiment, the secondary unit may further include a charging port, charging the interface rectifying and filtering circuit 23 and between the rechargeable battery 3, the charging interface having the interface coincides with the type charging device, or the secondary charging unit interface provides the internal circuit node connected to the charging device. 当然,初级单元可以包括多个初级感应模块。 Of course, the primary unit may include a plurality of primary inductive modules. 请参阅图5,基于第一实施例的基础上提出了感应式无线充电装置的另一实施例。 Refer to FIG. 5, on the basis of the first embodiment based on the embodiment of the proposed wireless inductive charging apparatus further embodiment. 在本实施例中,初级单元包括有两个初级感应模块,第一初级感应模块包括第一初级可控开关IIO 和第一发射感应线圈112,第二初级感应模块包括第二初级可控开关110'和第二发射感应线圈112'。 In the present embodiment, there are two primary unit comprises a primary sensor module, the sensing module comprises a first primary controllable switch IIO first primary inductive coil 112 and a first transmitter, the second primary sensing module 110 comprises a second primary controllable switch 'inductive coil 112 and the second transmit'. 相应的,初级单元包括用于采集第一初级感应模块中电流信号的第一电流检测电路12及用于采集第二初级感应模块中电流信号的第二电流检测电路12'电流检测电路12。 Accordingly, the primary unit comprising a first current detecting circuit for acquiring a first module in the primary inductive current signal detecting circuit of the second current in the second primary sensing module 12 and the current signal 12 for collecting 'the current detecting circuit 12. 当然,初级单元可以包括多个磁感应单元(14、 14')。 Of course, the primary unit may include a plurality of magnetic induction units (14, 14 '). 多个磁感应单元(14、 14')分别置于多个初级感应模块发射感应线圈(112、 112')的附近。 A plurality of magnetic sensing units (14, 14 ') are respectively disposed a plurality of primary inductive means for transmitting inductive coil (112, 112' near) a. 第一、第二电流检测电路(12、 12')分别用于采集第一初级感应模块、 第二初级感应模块中的发射线圈(112、 112')的电流信号,并将该电流信号8送至控制器13,控制器根据电流信号的变化分别控制初级感应模块中的第一 First and second current detection circuits (12, 12 ') are used to capture a first primary sensing module, transmitting coils (112, 112 in the second primary sensing module' current signal), and feeding the current signal 8 to the controller module sensing a first primary controller 13 changes the current control signal, respectively,

初级可控开关110及第二初级可控开关110'的导通和截止。 Primary controllable switch 110 and the second primary controllable switch 110 'is turned on and off.

本实用新型的工作过程如下: The present invention works as follows:

请参阅图1至图4,当附着有次级单元的一个充电设备200放置于包含有初级单元1的平板100上时,次级单元2中的磁敏单元24与初次单元中磁感应单元14相耦合,例如,磁敏单元24采用磁铁,磁感应单元14采用霍尔开关,霍尔开关感应到磁铁的磁力,从而产生一个变化的电平信号600传送给控制器13, 控制器13对此信号600进行处理后,判断出为有效充电设备200放置在感应式无线充电装置内,进而生成控制信号610,控制初级单元l中的初级可控开关IIO闭合,使得发射感应线圈112产生电磁场。 Please refer to FIG. 1 to FIG. 4, when the secondary unit is attached to a charging apparatus 200 when placed on a flat plate 100 comprising a primary unit and the secondary unit 2 and the first unit magnetic sensing unit 24 sensing unit 14 relative to the magnetic coupling, e.g., using magnetic sensing magnet unit 24, the magnetic induction unit 14 is a Hall switch, Hall switch senses the magnetic force of the magnet, resulting in a change in the level of signal 600 to the controller 13, the controller 13 this signal 600 after processing, it is determined to be valid in the charging apparatus 200 is placed within the inductive wireless charging means further generates a control signal 610, the primary control unit l of the primary IIO controllable switch is closed, so that the induction coil 112 generates an electromagnetic field emitted.

此时,初次单元1发射的电能由次级单元2接收并转化,从而给充电设备200中的充电电池3进行充电。 At this time, the primary power unit 1 is received by the secondary unit 2 and conversion, thereby charging the rechargeable battery 200 to the charging device 3. 具体的,次级单元2中的接收感应线圈210从发射感应线圈112感应并接收电能。 Specifically, the secondary unit 2 receives the induction coil 210 and receiving power from the inductive coil 112 induced emission.

接收感应线圈210接收的电能经过整流滤波电路22的整流、滤波和稳压处理后变为5V左右的直流电,为充电设备200提供电能,从而进行无线电能传输。 Reception induction coil 210 receives the power rectifier filter circuit 22 after the rectifier, filter and regulator process becomes about 5V DC, providing electrical energy to the charging apparatus 200, thereby performing wireless power transmission.

当充电设备200充电完成后,即充电电池3处于电量饱和状态,充电电池3 的充电管理电路31检测到电池的上述状态,生成一充电状态信号,根据该充电完成状态信息控制次级可控开关212断开,从而接收感应线圈210与充电电池3断开连接,使得初级单元1中的发射感应线圈112与次级单元2中的接收感应线圈210的互感发生变化,导致发射感应线圈112的电流发生一较大的变化。 After the completion of charging the charging apparatus 200, i.e., the rechargeable battery 3 is in charge saturation, the rechargeable battery 3 to charge management circuit 31 detects the above state of the battery state of charge to generate a signal to control the controllable switch based on the secondary charge complete state information 212 is disconnected, the induction coil 210 so as to receive the charge of the battery 3 is disconnected, so that the primary unit in the second reception induction coil in an induction coil 112 and the secondary emission unit 210 of the mutual inductance changes, resulting in the emission current of the induction coil 112 a big change. 位于初级单元1中的电流检测电路12实时检测到发射感应线圈112电流的变化,并将此信号410反馈给控制器13,由控制器13进行判断并生成控制信号420 控制与该发射感应线圈112相连接的初级可控开关110断开,从而关闭发射感应线圈112,发射感应线圈112不再消耗功率对外输出能量。 1 on the primary unit in real time a current detection circuit 12 detects a change in emission current induction coils 112, 410 and this signal is fed back to the controller 13, it is judged by the controller 13 and generates a control signal 420 to control the induction coil 112 of the transmitter controllable switch 110 is connected to the primary is disconnected, thereby closing the transmitter inductive coil 112, the induction coil 112 is no longer transmitting the power consumption of the external energy output. 也就是说,在充电电池3充电结束时,发射感应线圈112及时处于待机状态,降低了充电装置的功耗。 That is, when charging the battery charging end 3, the induction coil 112 transmit timely in the standby state, power consumption is reduced charging device. 当附着有次级单元的多个充电设备放置于包含有初级单元i的平板ioo上时,请参阅图5,以初级单元包含了两个初级感应模块为例,当第一充电设备放置在平板100上待充电时,第一磁感应单元14和充电设备200中的磁敏单元24相耦合,生成相应信号600送至控制器15,控制器生成控制信号610控制第一初级感应模块中的初级可控开关IIO,从而第一初级感应模块工作产生电磁场。 When attached to a plurality of charging apparatus when placed in a secondary unit comprising a primary unit i ioo the plate, see Figure 5, the primary unit contains two primary sensing module, for example, when the charging device is placed in the first flat plate to be charged, the magnetic sensing unit 24 coupled to the first magnetic sensing unit 14 and the charging device 200, 600 generates a corresponding signal 100 to the controller 15, the controller generates a control signal to control the first primary inductor 610 of the primary module may be control switch IIO, so that the first primary work sensing module generates an electromagnetic field. 当第二充电设备放置在平板100上待充电时,第二磁感应单元14'和充电设备中的磁敏单元24,相耦合,生成相应信号600'送至控制器15,控制器生成控制信号610'控制第二初级感应模块中的初级可控开关110',从而第二初级感应模块工作产生电磁场。 When the second charging device is placed on the plate 100 to be charged, a second magnetic induction unit 14 'and the magnetic sensing element in the charging device 24, is coupled to generate a corresponding signal 600' is supplied to the controller 15, the controller 610 generates a control signal 'primary controllable switch 110 controls the second primary sensing module', so that the second primary work sensing module generates an electromagnetic field. 当其中的任一充电设备充电完成后,即充电电池(3、 3')处于电量饱和状态,充电电池的充电管理电路(31、 31,)检测到电池的上述状态,生成相应的充电状态信号(510、 510'),根据该充电完成状态信息控制次级可控开关(212、 212,)断开。 When a charging device according to any one of the charging is completed, i.e., the rechargeable battery (3, 3 ') in charge saturation, the rechargeable battery charge management circuit (31, 31) to said detected state of the battery, generating a signal corresponding to a state of charge (510, 510 '), the charging is completed based on the state information of the secondary control controllable switch (212, 212) is disconnected. 初级单元中的多个初级感应模块相互独立,每个初级感应模块都有与其相连接的电流检测电路(12、 12'),电流检测电路(12、 12')能及时相应发射感应线圈(112、 112,)中的电流变化,生成检测信号(410、 410,),控制器15根据各路检测信号(410、 410')生成控制信号(420、 420'),在充电设备完成充电后,及时将已经完成充电的充电设备所对应的发射感应线圈调整至待机状态。 A plurality of the primary unit primary inductive independent modules, each module has a primary sensor connected thereto a current detection circuit (12, 12 '), a current detection circuit (12, 12') to promptly transmit a respective induction coil (112 current change 112,) and generates a detection signal (410, 410), the controller 15 'a control signal (420, 420) generates a') detecting the brightest signal (410, 410 according to, after the completion of charging in the charging device, promptly completed a charging device corresponding transmit induction coil adjusted to the standby state. 相比于现有技术,本实用新型的感应式无线充电装置具有如下优点: 1、充电设备身份识别及定向供电:所述的初级单元置于一可以支持多个充电设备同时充电的平板,其上分布有多个发射感应线圈,每个线圈都对应一个独立的可控开关,由控制器根据发射感应线圈中的电流变化控制导通和关断。 Compared to the prior art, the present invention wireless inductive charging apparatus has the following advantages: 1, the charging device identification and orientation of the power supply: the primary unit is placed may support a plurality of charging devices while charging plate, which a plurality of distributed emission induction coils, each coil corresponds to a separate controllable switch, the control is turned on in accordance with a change in emission current in the induction coil by a controller and turned off. 当充电设备放置于包含有初级单元平板表面时,磁感应单元和充电设备上的磁敏单元相耦合,感应出充电设备并将充电设备的位置信息提供给控制器,由控制器判断充电设备的位置并导通与其所处位置所在发射感应线圈相连接的可控开关,为充电设备供电。 When the charging device is placed in the primary unit comprises a flat surface, the magnetic sensing element and a magnetic sensing unit coupled to the charging device, the charging information of the position sensing device and the charging device to the controller, the controller determines the position of the charging device and turns its transmitter location where a controllable switch connected to an induction coil, a charging power supply apparatus.

此时与处于其它位置的感应发射线圈相连接的初级可控开关仍处于断开装置,从而处于其他位置的感应发射线圈不工作,处于待机状态,从而实现充电装置定向供电。 At this time, the primary inductive transmitter coil and a controllable switch in the other position is connected to the device is still disconnected, so that the position of the other coil in the inductive transmitter is not working, in the standby state, power supply to achieve a charging device orientation.

2、充电过程实时控制及低功耗状:所述次级可控开关在充电过程中处于导通状态,当接收到充电设备充电结束的控制信号时,次级可控开关断开, 从而接收感应线圈与充电电池部分断开连接,实现对充电过程的控制。 2, real-time control the charging process and the low power consumption: the secondary controllable switch in the conductive state during the charging process, when the control signal is received the end of charging the charging device, the secondary controllable switch is turned off, so as to receive induction coil and the charging of the battery is disconnected, to achieve control of the charging process.

当充电完成后,接收感应线圈与充电电池断开连接,位于初级单元的发射感应线圈与接收感应线圈的互感发生变化,并导致发射感应线圈的电流发生变化,电流检测电路实时检测到发射感应线圈电流的变化,并将此信息反馈给控制器,控制器根据发射感应线圈中电流的变化判断并控制相应的初级可控开关断开,从而关闭对应的发射感应线圈,实现充电结束时及时让发射感应线圈处于待机状态,降低系统功耗。 When fully charged, the charging of the battery receiving induction coil is disconnected, the mutual inductance on the primary induction coil and the transmitting unit changes the reception induction coil, the induction coil and cause the emission current changes, the current detection circuit to transmit real-time detection induction coil change in current, and feeds back this information to the controller, the controller determines and controls the respective primary controllable switch off according to a variation in emission currents of the induction coil, thereby closing the corresponding transmitter induction coil, realized in time for the end of charge emission the induction coil is in the standby state, to reduce system power consumption.

由上述可知,充电结束后,发射感应线圈和接收感应线圈均被关闭,即使充电设备仍位于平板上,也不会重复充电,从而保证了充电设备的安全。 From the foregoing, after the completion of charging, inductive transmitting coil and the receiving induction coil are closed, even if the charging device is still positioned on the plate, is not rechargeable, thus ensuring the safety of the charging device.

以上所述仅为本实用新型的优选实施例,并非因此限制本实用新型的专利范围,凡是利用本实用新型说明书及附图内容所作的等效结构或等效流程变换,或直接或间接运用在其他相关的技术领域,均同理包括在本实用新型的专利保护范围内。 The above embodiments merely preferred embodiments of the present invention, not intended to limit the patent scope of the present invention, all utilize the present invention disclosure and drawings taken equivalent structures or equivalent process, directly or indirectly used in other related technical fields shall fall within the scope of the patent protection of the present invention.

Claims (9)

1、一种感应式无线充电装置,包括可操作产生电磁场的初级单元;以及至少一个与初级单元分离,且适用于当所述初级单元相接近时,与所述初级单元相耦合,以接收功率的次级单元,其特征在于: 所述初级单元包括振荡电路、电流检测电路、初级感应模块、控制器;所述振荡电路和初级感应模块相连接;所述电流检测电路采集所述初级感应模块中的电流信号并将所述电流信号送至控制器;所述控制器接收来自电流检测电路采集的电流信号,并根据所述电流信号生成控制信号,控制初级感应模块是否产生电磁场; 所述次级单元包括用于接收功率的次级感应模块、整流滤波电路;所述整流滤波电路连接在次级感应模块和充电电池之间;所述充电电池的充电管理电路与次级感应模块的控制端相连接,所述充电管理电路生成控制信号以控制次级感应模 1, an inductive wireless charging apparatus, comprising a primary unit operable to generate an electromagnetic field; and at least one separable from the primary unit, and adapted to the primary unit when close, coupled with the primary unit to receive power the secondary unit, wherein: the primary unit comprises an oscillation circuit, a current detection circuit, a primary sensor module, a controller; and the oscillation circuit is connected to the primary sensing module; the current detection circuit of the primary inductive acquisition module the current signal and said current signal to the controller; wherein the controller receives the current signal from the current detection circuit acquired, and generating a current signal according to the control signal, the control module if the primary inductive generating an electromagnetic field; the secondary level sensing means includes a secondary means for receiving power, the rectifier filter circuit; a rectifying and filtering circuit connected between the secondary inductive module and a rechargeable battery; said control terminal of the battery charging circuit and the secondary inductive charge management module is connected, the charge management circuit generates control signals to control the secondary inductive mode 是否接收功率。 Whether the received power.
2、 根据权利要求l所述的感应式无线充电装置,其特征在于,所述初级感应模块包括发射感应线圈、初级可控开关;初级可控开关的输入端与振荡电路相连;初级可控开关的输出端与发射感应线圈相连;初级可控开关的控制端与控制器的输出端相连接;所述电流检测电路与发射感应线圈相连;控制器根据电流检测电路采集的电流信号,控制初级可控开关导通或截止。 2. The inductive wireless charging device according to claim l, wherein said sensing module comprises a transmitter primary induction coil, primary controllable switch; controllable switch coupled to the primary input terminal of the oscillation circuit; primary controllable switch the output terminal of the induction coil connected to the transmitter; a control terminal and the output terminal of the primary controller is connected to a controllable switch; the current detection circuit connected to the transmitter induction coil; and a controller in accordance with the current signal detection circuit acquired, the primary control can be the control switch is turned on or off.
3、 根据权利要求l所述的感应式无线充电装置,其特征在于,所述次级感应模块包括接收感应线圈、次级可控开关;所述次级可控开关连接在接收感应线圈与整流滤波电路之间;次级可控开关的控制端与充电电池的充电管理电路相连接,所述充电管理电路生成控制信号控制次级可控开关导通或截止。 3, the inductive wireless charging device according to claim l, wherein said receiving module comprises an induction secondary inductive coil, a secondary controllable switch; controllable switch connected to the secondary induction coil receiving the rectifier between the filter circuit; a control terminal of the rechargeable battery and the secondary charge management circuit controllable switch is connected, the charge management circuit generates control signals for controlling the secondary controllable switch turned on or off.
4、 根据权利要求l所述的感应式无线充电装置,其特征在于:所述初级单元还包括电源,用以提供电能;所述电源与振荡电路相连接。 4. The inductive wireless charging device according to claim l, wherein: the primary unit further comprises a power supply for providing electric power; a power supply is connected to the oscillation circuit.
5、 根据权利要求l所述的感应式无线充电装置,其特征在于,所述初级单元还包括磁感应单元,所述次级单元还包括磁敏单元;所述磁敏单元可与磁感应单元相耦合;所述磁感应单元的输出端与控制器相连接,所述控制器接收来自磁感应单元的输出信号及电流检测电路采集的电流信号,并根据上述信号生成控制信号,控制初级感应模块是否产生电磁场。 5. The inductive wireless charging device according to claim l, wherein the primary unit further comprises a magnetic induction unit, the secondary unit further comprises a magnetic sensing unit; the magnetic sensing means may be coupled to the magnetic induction unit ; output of the magnetic induction unit is connected to the controller, the controller receives a signal and a current signal output from the current detection circuit acquired magnetic induction unit, and generating a control signal based on the signal, the control module if the primary inductive electromagnetic field is generated.
6、 根据权利要求5所述的感应式无线充电装置,其特征在于,所述磁感应单元为霍尔开关,所述磁敏单元为磁铁。 6. The inductive wireless charging device according to claim 5, wherein said magnetic sensing means is a Hall switch, the magnetic sensing means is a magnet.
7、 根据权利要求l所述的感应式无线充电装置,其特征在于,初级单元包括多个初级感应模块,以及和多个初级感应模块一一对应的多个电流检测电路;所述电流检测电路采集与其相连接的初级感应模块中的电流信号并将所述电流信号送至控制器,所述控制器分别接收来自电流检测电路采集的电流信号,并根据所述电流信号生成控制信号,控制与电流检测电路相对应的初级感应模块是否产生电磁场。 7. The inductive wireless charging device according to claim l, characterized in that the primary current detecting circuit unit includes a plurality of primary inductive plurality of modules, and the modules, and a plurality of primary inductive one correspondence; the current detection circuit primary inductive acquisition module connected thereto is a current signal and said current signal to a controller, the controller receives a current signal from the current detection circuit acquired, and based on the current signal to generate a control signal, and control whether the current detection circuit corresponding to the primary sensing module generates an electromagnetic field.
8、 根据权利要求6所述的感应式无线充电装置,其特征在亍,所述初级单元还包括多个磁感应单元。 8. The apparatus of claim inductive wireless charging to claim 6, characterized in that the right foot, the primary unit further comprises a plurality of magnetic sensing units.
9、 根据权利要求l所述的感应式无线充电装置,其特征在于,次级单元还包括充电接口,充电接口连接在整流滤波电路与充电电池之间。 9. The wireless inductive charging apparatus as claimed in claim l, characterized in that the secondary unit further comprises a charging port, charging interface connected between the rectifying and filtering circuit with a rechargeable battery.
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