WO2014176835A1 - 无线电能传输系统、发射端、接收端及其唤醒方法 - Google Patents

无线电能传输系统、发射端、接收端及其唤醒方法 Download PDF

Info

Publication number
WO2014176835A1
WO2014176835A1 PCT/CN2013/080762 CN2013080762W WO2014176835A1 WO 2014176835 A1 WO2014176835 A1 WO 2014176835A1 CN 2013080762 W CN2013080762 W CN 2013080762W WO 2014176835 A1 WO2014176835 A1 WO 2014176835A1
Authority
WO
WIPO (PCT)
Prior art keywords
magnetic field
transmitting end
control module
receiving end
transmission system
Prior art date
Application number
PCT/CN2013/080762
Other languages
English (en)
French (fr)
Inventor
李聃
董秀莲
龙海岸
Original Assignee
海尔集团技术研发中心
海尔集团公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 海尔集团技术研发中心, 海尔集团公司 filed Critical 海尔集团技术研发中心
Publication of WO2014176835A1 publication Critical patent/WO2014176835A1/zh

Links

Classifications

    • 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
    • H02J50/10—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
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/60—Circuit arrangements or systems for wireless supply or distribution of electric power responsive to the presence of foreign objects, e.g. detection of living beings
    • 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

Definitions

  • Radio energy transmission system transmitting end, receiving end and wake-up method thereof
  • the present invention relates to the field of radio energy transmission technologies, and in particular, to a radio energy transmission system, a transmitting end, a receiving end, and a wake-up method thereof.
  • the transmitting end of the existing wireless charging system also performs continuous energy emission without the receiving end, causing energy loss, and the electromagnetic radiation interference to the external environment is also increased, which is difficult to meet the requirements of the energy efficiency level of the electrical product, so the system must There is a standby state. In standby mode, the system does not emit energy or emit a small amount of energy. Once the receiving end is placed on the transmitting end or within the predetermined receiving range, the system must be able to wake from the standby state to the working state.
  • Standby wake-up usually has several methods such as manual switch control, contact switch control, intermittent energy emission wake-up according to feedback, and independent communication module.
  • the manual switch control causes the transmitting end system to shift from the standby state to the working state.
  • the transmitting end power can be completely turned off when the receiving end does not work. This method does not emit energy at all, but the user needs to manually open the switch, and cannot automatically sense. The effect is not smart enough.
  • the transmitting end of the wireless charging system uses intermittent energy emission. According to the change of the voltage/current of the transmitting coil or the digital communication, it is judged whether there is a receiving end. In this way, although the intelligence is high, it will cause energy loss during standby, and the power consumption is higher. Big.
  • the use of a separate communication module requires continuous power supply to the module. Summary of the invention
  • the object of the present invention is to provide a radio energy transmission system, a transmitting end, a receiving end and a wake-up method thereof, which can realize sensitive and reliable intelligent standby wake-up.
  • the invention discloses a radio energy transmission system, comprising a receiving end and a transmitting end, wherein the transmitting end comprises a power module and a control module,
  • the receiving end comprises a magnetic component
  • the transmitting end further includes a magnetic field sensing module.
  • the magnetic field sensing module is configured to sense a magnetic field change caused by the magnetic component, and transmit the signal of the magnetic field change to the control module, and the control module controls the transmitting end according to the signal of the magnetic field change It is working or standby.
  • the power module only supplies power to the control module and the magnetic field sensing module.
  • the power module only supplies power to the control module and the magnetic field sensing module, and the control module stops the pulse width modulation output.
  • the magnetic field sensing module includes a magnetic sensor disposed at a predetermined position of the transmitting coil of the transmitting end or at a circuit portion of the transmitting end.
  • the magnetic sensor is connected to the circuit portion of the transmitting end by a wire or directly to the circuit portion of the transmitting end.
  • the magnetic member is disposed at a predetermined position of the receiving coil of the receiving end or at a circuit portion of the receiving end at a single point or a plurality of points.
  • the invention also discloses a transmitting end of a radio energy transmission system, and the transmitting end comprises a power module and a control module, The transmitting end further includes a magnetic field sensing module, wherein the magnetic field sensing module is configured to sense a magnetic field change, and transmit the signal of the magnetic field change to the control module.
  • the control module controls the transmitting end to be in an active state or a standby state according to the signal of the magnetic field change.
  • the power module only supplies power to the control module and the magnetic field sensing module.
  • the power module only supplies power to the control module and the magnetic field sensing module, and the control module stops the pulse width modulation output.
  • the present invention further discloses a receiving end of a wireless power transmission system, the receiving end comprising a circuit portion and a receiving coil, wherein the receiving end comprises a magnetic component.
  • the invention further discloses a wake-up method of a wireless power transmission system, wherein the wake-up method comprises: in a standby state, the magnetic sensor of the transmitting end determines whether the receiving end is placed within a predetermined receiving range by sensing a change of the magnetic field, and if not, continuing Maintaining the standby state, and if so, waking up the standby state to enter a working state;
  • the transmitting end performs energy emission to the receiving end
  • the magnetic sensor determines whether the receiving end leaves the predetermined receiving range by sensing a change in the magnetic field. If not, the energy transmission is continued, and if so, the set time is continued, and then the standby state is entered.
  • the radio transmission system, the transmitting end, the receiving end and the waking method thereof provided by the invention can realize sensitive and reliable standby wake-up by radiating a magnetic field sensing module at the transmitting end and placing a magnetic portion at the receiving end, and the volume is small and the cost is low. .
  • FIG. 1 is a block diagram showing the structure of a transmitting end of a wireless power transmission system according to the present invention
  • FIG. 2 is a flow chart of a standby wake-up method of a wireless power transmission system according to the present invention
  • FIG. 3a is a schematic diagram of a first structure of a transmitting end of a wireless power transmission system according to the present invention
  • FIG. 3b is a wireless power transmission system according to the present invention.
  • FIG. 3c is a top plan view of a third structure of a transmitting end of a wireless power transmitting system according to the present invention
  • Figure 3d is a side elevational view of a third configuration of the transmitting end of the wireless power transmission system in accordance with the present invention.
  • FIG. 4 is a block diagram showing the structure of a receiving end of a wireless power transmission system according to the present invention.
  • FIG. 1 is a block diagram showing the structure of a transmitting end of a wireless power transmission system in accordance with the present invention.
  • the present invention provides a radio energy transmission system (referred to as a system), comprising a receiving end and a transmitting end, the receiving end comprises a magnetic component, the transmitting end comprises a power module 10 and a control module 12; and the transmitting end further comprises a magnetic field sensing
  • the magnetic field sensing module 11 is configured to sense a magnetic field change caused by the magnetic component, and transmit a signal of the magnetic field change to the control module 12, and the control module 12 controls the transmitting end according to the signal of the magnetic field change. It is working or standby.
  • the radio energy transmission system can be used to wirelessly charge the receiving end through the transmitting end.
  • the transmitting end of the wireless charging system includes the power module 10 and the control module 12 existing in the general wireless charging system structure.
  • the drive module 13, the inverter module 15, the feedback module 14, and the resonance module 16 further include a magnetic field sensing module 11.
  • the magnetic field sensing module 11 outputs a level change or voltage change signal by sensing a magnetic field change, and transmits the signal to the control module 12.
  • the control module 12 controls whether the transmitting end should be in a working state or in a standby state according to a signal of a magnetic field change.
  • the power module 10 when the control module 12 controls the transmitting end to be in the standby state, the power module 10 only supplies power to the control module 12 and the magnetic field sensing module 11. More preferably, the control module 12 simultaneously stops the pulse width modulation (PC, at this time, the transmitting coil is not available. Energy emission, which enables low standby power consumption of the system.
  • PC pulse width modulation
  • the magnetic field sensing module 11 mainly includes a magnetic sensor (such as a Hall sensor) and a peripheral circuit.
  • the magnetic sensor can be a digital sensor or an analog sensor, and the digital sensor outputs a level change signal to simulate a sensor output voltage change signal.
  • the magnetic sensor is disposed at a predetermined position of the transmitting coil of the transmitting end or at a circuit portion of the transmitting end. Usually, the magnetic sensor is connected to the circuit portion of the transmitting end through the wire or directly to the circuit portion of the transmitting end.
  • the magnetic component is usually made of a magnetic material such as a material such as neodymium iron boron.
  • the magnetic member may be disposed at a predetermined position of the receiving coil of the receiving end at a single point or a plurality of points or at a circuit portion of the receiving end, that is, a predetermined position in the receiving coil may be set at a single point or multiple points, or a predetermined vicinity of the receiving coil may be set. The position can also be set on the circuit part of the receiving end.
  • the magnetic member may be in various forms and shapes such as a cylindrical shape, a rectangular parallelepiped or a receiving coil shield.
  • the sensitivity of the magnetic sensor and the magnetic strength of the magnetic material are based on the transmitting coil of the transmitting end and the receiving coil of the receiving end at a normal working distance, and the transmitting end can sense the receiving end as appropriate.
  • the sensing distance should not be too far, and it is easy to cause false start; the sensing distance should not be too close. Otherwise, the receiver cannot be woken up from the standby state when it is placed.
  • FIG. 2 is a flow chart of a standby wake-up method of a wireless power transmission system in accordance with the present invention. As shown in FIG. 2, the present invention further provides a wake-up method of the wireless power transmission system, where the wake-up method includes:
  • the radio energy transmission system After the initialization of the charger is completed, the radio energy transmission system enters the standby state, and the magnetic field sensing module 11 of the transmitting end determines whether the receiving end is placed in the predetermined receiving range by sensing the magnetic field change, and if not, continues to maintain the standby state, if , wake up the standby state and enter the working state.
  • the transmitting end transmits energy to the receiving end.
  • determining whether the receiving end is a legitimate receiving end if yes, the transmitting end transmits energy to the legal receiving end, if not, prompting the foreign object, and the magnetic sensor determines whether the foreign object is taken away by sensing the magnetic field change. If yes, go to standby.
  • the "legal receiving end" is a receiving end containing a magnetic member, not a separate magnetic member or other item containing a magnetic member.
  • Judging whether the receiving end is a "legal receiving end" can be judged by distinguishing the magnetic variation strength between the legal receiving end and the non-legal receiving end, and can also be judged by the signal confirmation of the transmitting end and the receiving end, and is commonly used in the field. Other ways of judging.
  • the magnetic field sensing module 11 determines whether the receiving end leaves the predetermined receiving range by sensing a change of the magnetic field. If not, the energy transmission is continued. If yes, the set time is continued, and then the standby state is entered.
  • the control module 12 controls whether the transmitting end is in an active state or a standby state. When no receiving end is placed in a predetermined receiving range, the transmitting is in a standby state, when the receiving end is placed in a predetermined receiving range or the receiving end just takes a short time. During the time (ie, set time), the system is in the working state. After a period of time (ie, set time) after the receiving end is taken away, the system enters a standby state, which is determined by the control module 12.
  • the control module 12 controls the power module 10 to supply power to all modules, and
  • the control module 12 outputs pulse width modulation (PWM) to the drive module 13, which transmits energy to the receiving end.
  • PWM pulse width modulation
  • the power module 10 at the transmitting end only supplies power to the control module 12 and the magnetic field sensing module 11, and the control module 12 stops the PWM output, and the transmitting coil has no energy emission, so that the system can achieve low standby power. Consumption.
  • the wireless energy transmission system and the wake-up method thereof of the present invention can realize sensitive and reliable standby wake-up by adding a magnetic field sensing module 11 at the transmitting end and adding a magnetic component at the receiving end, and the magnetic sensor technology of the magnetic field sensing module 11 is mature and volume. Small, low cost, relatively small impact on the volume and cost of the transmitting end, increased magnetic material volume is small, cost is also low, easy to add in the receiving end.
  • the present invention can achieve low standby power consumption of the system by supplying power only to the control module 12 and the magnetic field sensing module 11 in the standby mode, and the control module 12 stops the P output.
  • Figure 3a is a schematic illustration of a first configuration of a transmitting end of a wireless power transmission system in accordance with the present invention
  • Figure 3b is a schematic illustration of a second configuration of a transmitting end of a wireless power transmitting system in accordance with the present invention
  • Figure 3c is a diagram of a wireless power transmission in accordance with the present invention
  • Figure 3d is a side elevational view of a third configuration of the transmitting end of the wireless power transmitting system in accordance with the present invention.
  • the present invention further provides a transmitting end of a radio energy transmission system, where the transmitting end comprises a power module 10 and a control module 12, and the transmitting end further comprises a magnetic field sensing module 11 and a magnetic field sensing module 11
  • the signal is used to sense the change of the magnetic field, and the signal of the change of the magnetic field is transmitted to the control module 12, and the control module 12 controls the transmitting end to be in an active state or a standby state according to the signal of the change of the magnetic field.
  • the transmitting end of the wireless charging system includes a power module 10, a control module 12, a driving module 13, an inverter module 15, a feedback module 14, and a resonance module 16 existing in the general wireless charging system structure, and further includes a magnetic field sensing module 11.
  • the magnetic field sensing module 11 outputs a level change or voltage change signal by sensing a magnetic field change, and transmits the signal to the control module 12.
  • the control module 12 controls whether the transmitting end should be in an active state or in a standby state according to a signal of a magnetic field change.
  • the power module 10 only supplies power to the control module 12 and the magnetic field sensing module 11. More preferably, the control module 12 simultaneously stops the pulse width modulation (PC, at this time, the transmitting coil is not available. Energy emission, which enables low standby power consumption of the system.
  • the magnetic field sensing module 11 mainly includes a magnetic sensor 31 (for example, a Hall sensor) 31 and a peripheral circuit. As shown in FIGS. 3a to 3d, the magnetic sensor 31 is disposed at a predetermined position of the transmitting coil 32 at the transmitting end or a circuit portion 33 provided at the transmitting end. on. Further, the magnetic sensor 31 is connected to the circuit portion 33 of the transmitting end by a wire or directly to the circuit portion 32 of the transmitting end.
  • a magnetic sensor 31 for example, a Hall sensor
  • the magnetic sensor 31 may be disposed on the circuit portion 32 of the transmitting end and directly in contact with the circuit portion 32 of the transmitting end, as shown in FIG. 3b, the magnetic sensor The predetermined position in the transmitting coil 32 can also be set and electrically connected to the circuit portion 33 of the transmitting end by a wire.
  • the magnetic sensor 31 can also be in the circuit portion 33 of the transmitting end and directly in contact with the circuit portion 33 of the transmitting end.
  • the magnetic sensor 31 can be a digital sensor or an analog sensor, and the digital sensor outputs a level change signal to simulate a sensor output voltage change signal.
  • the receiving end is a legitimate receiving end, and if so, the transmitting end transmits energy to the legal receiving end, and if not, prompts the foreign object, and the magnetic sensor changes by the induced magnetic field. Determine whether the foreign object is removed, and if so, enter the standby state.
  • the "legal receiving end” is a receiving end containing a magnetic member, rather than a separate magnetic member or other item containing a magnetic member. Judging whether the receiving end is a "legal receiving end” can be judged by distinguishing the magnetic variation strength between the legal receiving end and the non-legal receiving end, and can also be judged by the signal confirmation of the transmitting end and the receiving end, and is commonly used in the field. Other ways of judging.
  • the control module 12 controls whether the transmitting end is in the working state or the standby state. When no receiving end is placed in the predetermined receiving range, the transmitting end is in the standby state, and when there is a magnetic component instead of the legal receiving end containing the magnetic component, the predetermined receiving end is placed in the predetermined state. When the receiving range is within, the foreign object is prompted, and when the legal receiving end is placed within the predetermined receiving range or the legal receiving end has just taken away for a short time (ie, the set time), the system is in the working state, when the legal receiving is performed. After a period of time (ie, set time), the system enters the standby state again, and the set time is determined by the control module 12.
  • the control module 12 controls the power module 10 to supply power to all modules, and the control module 12 outputs pulse width modulation (PWM) to the drive module 13, which transmits energy to the receiving end.
  • PWM pulse width modulation
  • the power module 10 at the transmitting end only supplies power to the control module 12 and the magnetic field sensing module 11, and the control module 12 stops the PWM output, and the transmitting coil has no energy emission, so that the system can achieve low standby power. Consumption.
  • the transmitting end of the radio energy transmission system of the present invention can realize sensitive and reliable standby wake-up by adding the magnetic field sensing module 11, and the magnetic sensor technology of the magnetic field sensing module 11 is mature, small in size, low in cost, and volume and cost to the transmitting end. The impact is relatively small.
  • the present invention can achieve low standby power consumption of the system by supplying power only to the control module 12 and the magnetic field sensing module 11 in the standby mode, and the control module 12 stops the PWM output.
  • FIG. 4 is a block diagram showing the structure of a receiving end of a wireless power transmission system in accordance with the present invention.
  • the present invention further provides a receiving end of a radio energy transmission system, the receiving end comprising a circuit portion 43 and The coil 42 is received and includes a magnetic member 41.
  • the magnetic member 41 is disposed at a predetermined position of the receiving coil 42 at the receiving end or at the circuit portion 43 of the receiving end at a single point or a plurality of points.
  • the magnetic member 41 is usually made of a magnetic material, such as a material such as neodymium iron boron, which may be disposed at a predetermined position in the receiving coil, or at a predetermined position near the receiving coil, or may be disposed on the circuit portion of the receiving end.
  • the magnetic member may be in various forms and shapes such as a cylindrical shape, a rectangular parallelepiped or a receiving coil shield.
  • the receiving end of the wireless power transmission system of the present invention increases the size of the magnetic component, is low in cost, and is easy to add in the receiving end.

Abstract

一种无线电能传输系统及其发射端和接收端。该无线电能传输系统包含接收端和发射端。发射端包含电源模块（10）和控制模块（12），接收端包含磁性部件。发射端还包含磁场感应模块（11），其用于感应磁性部件所带来的磁场变化，并将磁场变化的讯号传递给控制模块（12），控制模块（12）根据磁场变化的讯号控制发射端为工作状态或者待机状态。该无线电能传输系统及其发射端和接收端可以实现待机唤醒，并且体积较小，成本较低。

Description

无线电能传输系统、 发射端、 接收端及其唤醒方法 技术领域
本发明涉及无线电能传输技术领域， 尤其涉及一种无线电能传输系统、 发 射端、 接收端及其唤醒方法。
背景技术
现有的无线充电系统发射端在没有接收端的情况下也进行持续能量发射， 造成能量损失， 同时对外界环境的电磁辐射干扰也会增大， 难以满足电器产品 能效等级的要求， 因此系统必须要有待机状态。 在待机状态下， 系统对外不发 射能量或发射少量的能量。一旦有接收端放置在发射端上或者预定接收范围内， 系统要能够从待机状态进行唤醒到工作状态。
待机唤醒一般有手动开关控制、 接触式开关控制、 间歇式能量发射根据反 馈进行唤醒、 独立的通讯模块等几种方式。
手动开关控制使发射端系统从待机状态转到工作状态， 可以在接收端不进 行工作时完全关掉发射端电源， 这种方式完全不对外发射能量， 但是需要用户 手动打开开关， 不能自动感应， 效果上不够智能。
采用接触式开关控制， 待机时只需要给开关提供微弱电能， 接收端放置在 发射端上时， 自动触发发射端上的接触式开关， 进行待机唤醒， 但是这种方式 要求接收端和发射端进行紧密接触才能实现， 而且容易引起误操作。
无线充电系统发射端采用间歇式能量发射，根据发射线圈电压 /电流的变化 或者采用数字通讯来判断有没有接收端， 这种方式智能虽然识别程度高， 但是 会造成待机时能量损失， 功耗较大。采用独立的通讯模块需要给模块持续供电， 发明内容
本发明的目的在于提供一种无线电能传输系统、 发射端、 接收端及其唤醒 方法， 能够实现灵敏可靠智能的待机唤醒。
本发明公开一种无线电能传输系统， 包含接收端和发射端， 所述发射端包 含电源模块和控制模块，
所述接收端包含磁性部件；
所述发射端还包含磁场感应模块，
所述磁场感应模块用于感应所述磁性部件所带来的磁场变化， 并将所述磁 场变化的讯号传递给所述控制模块， 所述控制模块根据所述磁场变化的讯号控 制所述发射端为工作状态或者待机状态。
优选地， 当所述控制模块控制所述发射端为待机状态时， 所述电源模块只 给所述控制模块和所述磁场感应模块供电。
优选地， 当所述控制模块控制所述发射端为待机状态时， 所述电源模块只 给所述控制模块和所述磁场感应模块供电， 并且所述控制模块停止脉冲宽度调 制输出。
优选地， 所述磁场感应模块包含磁性传感器， 所述磁性传感器设置在所述 发射端的发射线圈的预定位置或者设置在所述发射端的电路部分上。
优选地， 所述磁性传感器通过导线与所述发射端的电路部分连接或者直接 与所述发射端的电路部分接触。
优选地， 所述磁性部件以单点或多点设置在所述接收端的接收线圈的预定 位置或者设置在所述接收端的电路部分上。
本发明还公开了一种无线电能传输系统的发射端， 所述发射端包含电源模 块和控制模块， 所述发射端还包含磁场感应模块， 所述磁场感应模块用于感应磁场变化， 并将所述磁场变化的讯号传递给所述控制模块，
所述控制模块根据所述磁场变化的讯号控制所述发射端为工作状态或者待 机状态。
优选地， 当所述控制模块控制所述发射端为待机状态时， 所述电源模块只 给所述控制模块和所述磁场感应模块供电。
优选地， 当所述控制模块控制所述发射端为待机状态时， 所述电源模块只 给所述控制模块和所述磁场感应模块供电， 并且所述控制模块停止脉冲宽度调 制输出。
本发明又公开了一种无线电能传输系统的接收端， 所述接收端包含电路部 分和接收线圈， 其特征在于， 所述接收端包含磁性部件。
本发明又公开了一种无线电能传输系统的唤醒方法， 所述唤醒方法包含： 在待机状态时， 发射端的磁性传感器通过感应磁场变化判断接收端是否放 置在预定接收范围内， 若否， 则继续保持所述待机状态， 若是， 唤醒所述待机 状态进入工作状态；
在所述工作状态中， 所述发射端进行能量发射给所述接收端；
所述磁性传感器通过感应磁场变化判断所述接收端是否离开所述预定接收 范围， 若否， 则继续进行能量发射， 若是， 则持续设定时间， 然后进入所述待 机状态。
优选地， 在进入所述工作状态时， 判断所述接收端是否合法的接收端， 若 是， 则所述发射端进行能量发射给合法的所述接收端， 若否， 则提示异物， 并 且所述磁性传感器通过感应磁场变化判断所述异物是否取走， 若是， 则进入所 述待机状态。 本发明提供的无线电传输系统、 发射端、 接收端及其唤醒方法， 通过在发 射端放射磁场感应模块， 在接收端放置磁性部分， 可以实现灵敏可靠的待机唤 醒， 而且体积较小、 成本较低。
附图说明
图 1是根据本发明的无线电能传输系统的发射端的结构框图；
图 2是根据本发明的无线电能传输系统的待机唤醒方法的流程图； 图 3a是根据本发明的无线电能传输系统的发射端的第一结构的示意图； 图 3b是根据本发明的无线电能传输系统的发射端的第二结构的示意图； 图 3c 是根据本发明的无线电能传输系统的发射端的第三结构的俯视示意 图；
图 3d 是根据本发明的无线电能传输系统的发射端的第三结构的侧视示意 图；
图 4是根据本发明的无线电能传输系统的接收端的结构示意图。
具体实施方式
下面结合附图并通过具体实施方式来进一歩说明本发明的技术方案。 可以 理解的是， 此处所描述的具体实施例仅仅用于解释本发明， 而非对本发明的限 定。 另外还需要说明的是， 为了便于描述， 附图中仅示出了与本发明相关的部 分而非全部内容。
图 1是根据本发明的无线电能传输系统的发射端的结构框图。如图 1所示， 本发明提供一种无线电能传输系统（简称系统）， 包含接收端和发射端， 接收端 包含磁性部件， 发射端包含电源模块 10和控制模块 12 ; 发射端还包含磁场感 应模块 11， 磁场感应模块 11用于感应磁性部件所带来的磁场变化， 并将磁场 变化的讯号传递给控制模块 12， 控制模块 12根据磁场变化的讯号控制发射端 为工作状态或者待机状态。
其中， 无线电能传输系统通过发射端可以用来对接收端进行无线充电， 从 图 1中可以看出， 无线充电系统的发射端除包括一般无线充电系统结构中存在 的电源模块 10、 控制模块 12、 驱动模块 13、 逆变模块 15、 反馈模块 14及谐振 模块 16外， 还包括磁场感应模块 11。 磁场感应模块 11通过感应磁场变化输出 电平变化或电压变化讯号， 并将此讯号传递至控制模块 12， 控制模块 12根据 磁场变化的讯号控制发射端应该处于工作状态还是处于待机状态。
优选地， 当控制模块 12控制发射端为待机状态时， 电源模块 10只给控制 模块 12和磁场感应模块 11供电， 更优选地， 控制模块 12同时停止脉冲宽度调 制 （P C , 此时发射线圈无能量发射， 这样可以实现系统的低待机功耗。
磁场感应模块 11主要包含磁性传感器（例如霍尔传感器）及外围电路， 磁 性传感器可以为数字型传感器或者模拟型传感器， 数字型传感器输出电平变化 讯号， 模拟传感器输出电压变化讯号。 磁性传感器设置在发射端的发射线圈的 预定位置或者设置在发射端的电路部分上， 通常磁性传感器通过导线与发射端 的电路部分连接或者直接与发射端的电路部分接触。
磁性部件通常由磁性材料制成， 例如汝铁硼等材料。 磁性部件可以以单点 或多点设置在接收端的接收线圈的预定位置或者设置在接收端的电路部分上， 即可以单点或多点设置在接收线圈中的预定位置， 或者设置接收线圈附近的预 定位置， 还可以设置在接收端的电路部分上。 磁性部件可以为圆柱形、 长方体 或者是接收线圈屏蔽层等各种形式和形状。
另外， 需要注意的是， 磁性传感器的灵敏度以及磁性材料的磁性强度要根 据发射端的发射线圈和接收端的接收线圈在正常工作距离下， 发射端能够感应 出接收端为适宜。 感应距离不能太远， 容易造成误启动； 感应距离也不能太近， 不然接收端放置时不能从待机状态中唤醒。
图 2是根据本发明的无线电能传输系统的待机唤醒方法的流程图。 如图 2 所示， 本发明还提供该无线电能传输系统的唤醒方法， 该唤醒方法包含：
S201歩骤： 在充电器初始化完成， 无线电能传输系统进入待机状态后， 发 射端的磁场感应模块 11 通过感应磁场变化判断接收端是否放置在预定接收范 围内， 若否， 则继续保持待机状态， 若是， 唤醒待机状态进入工作状态。
S202歩骤， 在工作状态中， 发射端进行能量发射给接收端。 优选地， 在工 作状态中， 判断接收端是否合法的接收端， 若是， 则发射端进行能量发射给合 法的接收端， 若否， 则提示异物， 并且磁性传感器通过感应磁场变化判断异物 是否取走， 若是， 则进入待机状态。 这里， "合法的接收端"为含有磁性部件的 接收端， 而非单独的磁性部件或者含有磁性部件的其他物品。 判断接收端是否 "合法的接收端"，可以通过区分合法的接收端和非合法的接收端的磁性变化强 度来进行判断， 也可以通过发射端和接收端的信号确认来进行判断， 以及采用 本领域常用的其他判断方式。
S203歩骤， 磁场感应模块 11通过感应磁场变化判断接收端是否离开预定 接收范围， 若否， 则继续进行能量发射， 若是， 则持续设定时间， 然后进入待 机状态。
其中， 控制模块 12控制发射端处于工作状态还是待机状态， 当没有接收端 放置在预定接收范围时， 发射处于待机状态， 当有接收端放置在预定接收范围 内或者接收端刚拿走很短的时间 （即设定时间） 内， 系统为工作状态， 当接收 端拿走后一段时间 （即设定时间） 后， 系统进入待机状态， 该设定时间由控制 模块 12确定。
在工作状态中， 控制模块 12控制电源模块 10为所有模块进行供电， 并且 控制模块 12输出脉冲宽度调制 （PWM) 到驱动模块 13， 发射线圈发射能量到接 收端。 优选地， 当为待机状态时， 发射端的电源模块 10只给控制模块 12和磁 场感应模块 11供电， 并且控制模块 12停止 PWM输出， 此时发射线圈无能量发 射， 这样可以实现系统的低待机功耗。
本发明的无线电能传输系统及其唤醒方法通过在发射端增加设置磁场感应 模块 11， 在接收端增加设置磁性部件， 可以实现灵敏可靠的待机唤醒， 而且磁 场感应模块 11的磁性传感器技术成熟、 体积小、 成本较低， 对发射端的体积及 成本影响都比较小， 增加的磁性材料体积也小、 成本也较低， 易于在接收端中 添加。 另外， 本发明通过在待机模式时只给控制模块 12和磁场感应模块 11供 电， 并且控制模块 12停止 P丽输出， 可以实现系统的低待机功耗。
图 3a是根据本发明的无线电能传输系统的发射端的第一结构的示意图； 图 3b是根据本发明的无线电能传输系统的发射端的第二结构的示意图； 图 3c是 根据本发明的无线电能传输系统的发射端的第三结构的俯视示意图； 图 3d是根 据本发明的无线电能传输系统的发射端的第三结构的侧视示意图。
如图 1和图 3a-图 3d所示，本发明还提供一种无线电能传输系统的发射端， 发射端包含电源模块 10和控制模块 12， 发射端还包含磁场感应模块 11， 磁场 感应模块 11用于感应磁场变化， 并将磁场变化的讯号传递给控制模块 12， 控 制模块 12根据磁场变化的讯号控制发射端为工作状态或者待机状态。
无线充电系统的发射端除包括一般无线充电系统结构中存在的电源模块 10、 控制模块 12、 驱动模块 13、 逆变模块 15、 反馈模块 14及谐振模块 16夕卜， 还包括磁场感应模块 11。 磁场感应模块 11通过感应磁场变化输出电平变化或 电压变化讯号， 并将此讯号传递至控制模块 12， 控制模块 12根据磁场变化的 讯号控制发射端应该处于工作状态还是处于待机状态。 优选地， 当控制模块 12控制发射端为待机状态时， 电源模块 10只给控制 模块 12和磁场感应模块 11供电， 更优选地， 控制模块 12同时停止脉冲宽度调 制 （P C , 此时发射线圈无能量发射， 这样可以实现系统的低待机功耗。
磁场感应模块 11主要包含磁性传感器 31 (例如霍尔传感器） 31及外围电 路， 如图 3a-图 3d所示， 磁性传感器 31设置在发射端的发射线圈 32的预定位 置或者设置在发射端的电路部分 33上。 进一歩地， 磁性传感器 31通过导线与 发射端的电路部分 33连接或者直接与发射端的电路部分 32接触。
当发射端的电路部分 33和发射线圈 32分离时， 如图 3a所示， 磁性传感器 31可以设置在发射端的电路部分 32上，并且直接与发射端的电路部分 32接触， 如图 3b所示， 磁性传感器 31也可以设置发射线圈 32中的预定位置， 并且通过 导线与发射端的电路部分 33电连接。当发射端的电路部分 33和发射线圈 32重 叠放置， 如图 3c和图 3d所示， 磁性传感器 31也可以在发射端的电路部分 33， 并直接与发射端的电路部分 33接触。
其中， 磁性传感器 31可以为数字型传感器或者模拟型传感器， 数字型传感 器输出电平变化讯号， 模拟传感器输出电压变化讯号。
下面为无线电能传输系统的发射端的工作方法流程：在充电器初始化完成， 无线电能传输系统进入待机状态后，发射端的磁场感应模块 11通过感应磁场变 化判断接收端是否放置在预定接收范围内， 若否， 则继续保持待机状态， 若是， 唤醒待机状态进入工作状态； 在工作状态中， 发射端进行能量发射给接收端； 磁场感应模块 11通过感应磁场变化判断接收端是否离开预定接收范围， 若否， 则继续进行能量发射， 若是， 则持续设定时间， 然后进入待机状态。 优选地， 在工作状态中， 需要先判断接收端是否合法的接收端， 若是， 则发射端进行能 量发射给合法的接收端， 若否， 则提示异物， 并且磁性传感器通过感应磁场变 化判断异物是否取走， 若是， 则进入待机状态。 这里， "合法的接收端"为含有 磁性部件的接收端， 而非单独的磁性部件或者含有磁性部件的其他物品。 判断 接收端是否 "合法的接收端"， 可以通过区分合法的接收端和非合法的接收端的 磁性变化强度来进行判断，也可以通过发射端和接收端的信号确认来进行判断， 以及采用本领域常用的其他判断方式。
其中， 控制模块 12控制发射端处于工作状态还是待机状态， 当没有接收端 放置在预定接收范围内时， 发射端处于待机状态， 当有磁性部件而非含有磁性 部件的合法的接收端放置在预定接收范围内时， 则提示异物， 而当合法的接收 端放置在预定接收范围内或者合法的接收端刚拿走很短的时间 （即设定时间） 内， 系统为工作状态， 当合法的接收端拿走后一段时间 （即设定时间） 后， 系 统又进入待机状态， 该设定时间由控制模块 12确定。
在工作状态中， 控制模块 12控制电源模块 10为所有模块进行供电， 并且 控制模块 12输出脉冲宽度调制 （PWM) 到驱动模块 13， 发射线圈发射能量到接 收端。 优选地， 当为待机状态时， 发射端的电源模块 10只给控制模块 12和磁 场感应模块 11供电， 并且控制模块 12停止 PWM输出， 此时发射线圈无能量发 射， 这样可以实现系统的低待机功耗。
本发明的无线电能传输系统的发射端通过增加设置磁场感应模块 11， 可以 实现灵敏可靠的待机唤醒， 而且磁场感应模块 11的磁性传感器技术成熟、体积 小、 成本较低， 对发射端的体积及成本影响都比较小。 另外， 本发明通过在待 机模式时只给控制模块 12和磁场感应模块 11供电， 并且控制模块 12停止 PWM 输出， 可以实现系统的低待机功耗。
图 4是根据本发明的无线电能传输系统的接收端的结构示意图。 如图 4所 示， 本发明又提供一种无线电能传输系统的接收端， 接收端包含电路部分 43和 接收线圈 42， 而且包含磁性部件 41。 磁性部件 41以单点或多点设置在接收端 的接收线圈 42的预定位置或者设置在接收端的电路部分 43上。磁性部件 41通 常由磁性材料制成， 例如汝铁硼等材料， 可以设置在接收线圈中的预定位置， 或者设置接收线圈附近的预定位置， 还可以设置在接收端的电路部分上。 磁性 部件可以为圆柱形、 长方体或者是接收线圈屏蔽层等各种形式和形状。
本发明的无线电能传输系统的接收端增加设置磁性部件体积小、成本较低， 易于在接收端中添加。
以上所述仅为本发明的较佳实施例， 并不用以限制本发明， 凡在本发明的 精神和原则之内， 所作的任何修改、 等同替换、 改进等， 均应包含在本发明的 保护范围之内。

Claims

WO 2014/176835 权 |j 要 求 书 PCT/CN2013/080762
1、 一种无线电能传输系统， 包含接收端和发射端， 所述发射端包含电源模 块和控制模块， 其特征在于，
所述接收端包含磁性部件；
所述发射端还包含磁场感应模块， 所述磁场感应模块用于感应所述磁性部 件所带来的磁场变化， 并将所述磁场变化的讯号传递给所述控制模块，
所述控制模块根据所述磁场变化的讯号控制所述发射端为工作状态或者待 机状态。
2、 根据权利要求 1所述的无线电能传输系统， 其特征在于， 当所述控制模 块控制所述发射端为待机状态时， 所述电源模块只给所述控制模块和所述磁场 感应模块供电。
3、 根据权利要求 2所述的无线电能传输系统， 其特征在于， 当所述控制模 块控制所述发射端为待机状态时， 所述电源模块只给所述控制模块和所述磁场 感应模块供电， 并且所述控制模块停止脉冲宽度调制输出。
4、 根据权利要求 1所述的无线电能传输系统， 其特征在于， 所述磁场感应 模块包含磁性传感器， 所述磁性传感器设置在所述发射端的发射线圈的预定位 置或者设置在所述发射端的电路部分上。
5、 根据权利要求 4所述的无线电能传输系统， 其特征在于， 所述磁性传感 器通过导线与所述发射端的电路部分连接或者直接与所述发射端的电路部分接 触。
6、 根据权利要求 1所述的无线电能传输系统， 其特征在于， 所述磁性部件 以单点或多点设置在所述接收端的接收线圈的预定位置或者设置在所述接收端 的电路部分上。
7、一种无线电能传输系统的发射端，所述发射端包含电源模块和控制模块， 其特征在于，
所述发射端还包含磁场感应模块， 所述磁场感应模块用于感应磁场变化， 并将所述磁场变化的讯号传递给所述发射端的控制模块，
所述控制模块根据所述磁场变化的讯号控制所述发射端为工作状态或者待 机状态。
8、 根据权利要求 7所述的无线电能传输系统的发射端， 其特征在于， 当所 述控制模块控制所述发射端为待机状态时， 所述电源模块只给所述控制模块和 所述磁场感应模块供电。
9、 根据权利要求 8所述的无线电能传输系统的发射端， 其特征在于， 当所 述控制模块控制所述发射端为待机状态时， 所述电源模块只给所述控制模块和 所述磁场感应模块供电， 并且所述控制模块停止脉冲宽度调制输出。
10、 一种无线电能传输系统的接收端， 所述接收端包含电路部分和接收线 圈， 其特征在于， 所述接收端包含磁性部件。
11、 一种无线电能传输系统的唤醒方法， 其特征在于， 所述唤醒方法包含: 在待机状态时， 发射端的磁性传感器通过感应磁场变化判断接收端是否放 置在预定接收范围内， 若否， 则继续保持所述待机状态， 若是， 唤醒所述待机 状态进入工作状态；
在所述工作状态中， 所述发射端进行能量发射给所述接收端；
所述磁性传感器通过感应磁场变化判断所述接收端是否离开所述预定接收 范围， 若否， 则继续进行能量发射， 若是， 则持续设定时间， 然后进入所述待 机状态。
12、 根据权利要求 11所述的无线电能传输系统的唤醒方法， 其特征在于， 在进入所述工作状态时， 先判断所述接收端是否合法的接收端， 若是， 则所述 发射端进行能量发射给合法的所述接收端， 若否， 则提示异物， 并且所述磁性 传感器通过感应磁场变化判断所述异物是否取走， 若是， 则进入所述待机状态 (
PCT/CN2013/080762 2013-04-28 2013-08-02 无线电能传输系统、发射端、接收端及其唤醒方法 WO2014176835A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201310156998.XA CN104124772B (zh) 2013-04-28 2013-04-28 无线电能传输系统、发射端、接收端及其唤醒方法
CN201310156998.X 2013-04-28

Publications (1)

Publication Number Publication Date
WO2014176835A1 true WO2014176835A1 (zh) 2014-11-06

Family

ID=51770083

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2013/080762 WO2014176835A1 (zh) 2013-04-28 2013-08-02 无线电能传输系统、发射端、接收端及其唤醒方法

Country Status (2)

Country Link
CN (1) CN104124772B (zh)
WO (1) WO2014176835A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11782109B2 (en) 2020-08-26 2023-10-10 Siemens Healthcare Gmbh Wireless power feedback loop and control system for wireless coil in MRI system

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6660531B2 (ja) * 2014-10-31 2020-03-11 パナソニックＩｐマネジメント株式会社 異物検出装置
CN105703455B (zh) * 2014-11-26 2019-02-12 天宝电子（惠州）有限公司 一种可检测异物的高效率无线充电器
CN105759682A (zh) * 2016-02-03 2016-07-13 深圳市有方科技股份有限公司 一种无线唤醒系统、方法、控制设备及受控设备
CN106130194B (zh) * 2016-09-05 2019-06-07 青岛鲁渝能源科技有限公司 无线电能传输系统以及无线电能传输控制方法
CN106451812A (zh) * 2016-12-05 2017-02-22 青岛鲁渝能源科技有限公司 无线电能传输系统唤醒、休眠控制方法
CN107546803A (zh) * 2017-09-08 2018-01-05 广东虹勤通讯技术有限公司 一种无线充电设备、无线充电系统及方法
CN114123532A (zh) * 2021-10-22 2022-03-01 信利半导体有限公司 低功耗无线充电的控制方法及控制系统

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101971453A (zh) * 2007-05-08 2011-02-09 莫琼移动股份有限公司 用于便携式设备的感应充电的系统和方法
CN202042924U (zh) * 2011-05-13 2011-11-16 天瑞企业股份有限公司 非接触式充电装置
CN102752914A (zh) * 2012-06-01 2012-10-24 广州市宇飞电子有限公司 一种照明灯

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012121184A1 (ja) * 2011-03-10 2012-09-13 日本電気株式会社 移動体への非接触給電システム
CN102412605B (zh) * 2011-11-11 2014-01-01 安徽旗翔科技发展有限公司 带有投切和节能功能的充电设备及其投切和节能的方法
CN202872474U (zh) * 2012-09-26 2013-04-10 惠州市华阳多媒体电子有限公司 一种投影仪无线充电器

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101971453A (zh) * 2007-05-08 2011-02-09 莫琼移动股份有限公司 用于便携式设备的感应充电的系统和方法
CN202042924U (zh) * 2011-05-13 2011-11-16 天瑞企业股份有限公司 非接触式充电装置
CN102752914A (zh) * 2012-06-01 2012-10-24 广州市宇飞电子有限公司 一种照明灯

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11782109B2 (en) 2020-08-26 2023-10-10 Siemens Healthcare Gmbh Wireless power feedback loop and control system for wireless coil in MRI system

Also Published As

Publication number Publication date
CN104124772B (zh) 2018-11-20
CN104124772A (zh) 2014-10-29

Similar Documents

Publication Publication Date Title
WO2014176835A1 (zh) 无线电能传输系统、发射端、接收端及其唤醒方法
JP6352342B2 (ja) 無線電力送信のための装置、方法、コンピュータプログラム及び記憶媒体
KR101807335B1 (ko) 무선 전력 수신기 및 무선 전력 수신기의 슬립 모드 설정 방법
ES2912302T3 (es) Procedimiento para transmitir una señal mediante un transmisor de potencia inalámbrico y transmisor de potencia inalámbrico
KR102023548B1 (ko) 무선 전력 송신기, 무선 전력 수신기 및 각각의 제어 방법
KR102039375B1 (ko) 무선 전력 송신기 및 그 제어 방법
EP3282546B1 (en) Wireless power transmitting unit, wireless power receiving unit, and control methods thereof
KR102187962B1 (ko) 무선 충전에서 수신기 검출을 위한 로드 변화 감지 방법 및 무선 전력 송신기
CN106063075B (zh) 谐振调谐感应充电器中的充电电流监测或控制
EP2454799B1 (en) Inductive power transfer
US9257856B2 (en) Wireless power transmitter and method of controlling the same
JP2019083683A (ja) 共振型無線電力伝送システムにおける無線電力伝送制御方法、それを用いる無線電力送信装置、及びそれを用いる無線電力受信装置
KR101318688B1 (ko) 무선 충전 제어 시스템 및 그 제어 방법
KR101897634B1 (ko) 무선 전력 송신기, 무선 전력 수신기 및 각각의 제어 방법
US20130225082A1 (en) Apparatus and method for wireless power transmission
KR20140143104A (ko) 무선 충전에서의 수신기 검출을 위한 로드 변화 발생 방법 및 무선 전력 수신기
KR20150098575A (ko) 무선 전력 송신기 및 무선 전력 송신기의 제어 방법
KR102039495B1 (ko) 무선 전력 송신기 및 그 제어 방법
CN107408844A (zh) 用于在无线充电系统中生成无线功率接收器的负载的方法和无线功率接收器
KR20140008975A (ko) 무선 전력 송신기, 무선 전력 수신기 및 각각의 제어 방법
KR20240015704A (ko) 무선 전력 송신기 및 무선 전력 수신기와 그 동작 방법
KR20150098222A (ko) 무선 충전에서의 로드 검출 방법
JP2009213294A (ja) 非接触充電器
CN104659928A (zh) 一种无线充电发射电路及装置
KR200453596Y1 (ko) 무선 전력전송을 이용한 수족관 및 조명장치

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13883762

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13883762

Country of ref document: EP

Kind code of ref document: A1