CN204231033U - Wireless electric energy transmission device - Google Patents
Wireless electric energy transmission device Download PDFInfo
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- CN204231033U CN204231033U CN201420422276.4U CN201420422276U CN204231033U CN 204231033 U CN204231033 U CN 204231033U CN 201420422276 U CN201420422276 U CN 201420422276U CN 204231033 U CN204231033 U CN 204231033U
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Abstract
The utility model discloses a kind of wireless electric energy transmission device, this wireless electric energy transmission device comprises: comprise GMR switch module and the transmitting terminal system being connected to GMR switch module; Wherein, GMR switch module for detecting the magnetic field of permanent magnet in radio energy receiving device, and when magnetic field being detected, sends digital quantity signal to transmitting terminal system; Transmitting terminal system is used for after receiving the digital quantity signal from GMR switch module, to radio energy receiving device electric energy transmitting.The utility model, by using GMR switch module in wireless electric energy transmission device, makes transmitting terminal system receiving device can be detected at a distance, thus achieves waking up at a distance of wireless receiving device; By supporting the use of permanent magnet in GMR switch module in transmitting terminal system and receiving device, ensure that the reliability of wireless receiving device is waken up, thus avoid the system safety problem that magnetic interference causes caused by transmitting terminal system false wake-up.
Description
Technical field
The utility model relates to wireless power transmission field, specifically, relates to a kind of wireless electric energy transmission device.
Background technology
The Starting mode of existing radio energy transmission system mainly contains mains switch and starts, the modes such as remote controller startup, but, because the transmitting terminal of radio energy transmission system and receiving end device are separated from each other, therefore, existing transmitting end device is all be in hiding state or be placed in shelter, like this, just make the mains switch inconvenience of transmitting end device touched, and for the mode that remote controller starts, it can increase the triviality that system starts, and, there is the problem strong to the dependence of remote controller in the mode started that uses a teleswitch, once remote controller is lost, to cause starting transmitting end device, thus radio energy transmission system cannot be started.
Therefore, in order to solve the problem, need badly and make existing radio energy transmission system possess a kind of arousal function automatically, thus enable system self-starting, in the prior art then mainly by using the mode comprising the circuit of capacitive approach switch or Hall switch to make system automatically start, namely, capacitive approach switch or Hall switch detect wireless receiving device (such as mobile phone etc.) close to after, just in the mode of digital signal, system is started automatically, but, this automatic wake-up circuit ubiquity of the prior art misoperation and is waken up and wake up apart from the shortcoming such as near, when it is for powerful radio energy transmission system, very large potential safety hazard will be caused for system false wake-up, waking distance up then can cause system not start not.
For in correlation technique automatic wake-up circuit exist poor reliability, wake up apart near problem, at present effective solution is not yet proposed.
Utility model content
For in correlation technique automatic wake-up circuit exist poor reliability, wake up apart near problem, the utility model proposes a kind of wireless electric energy transmission device, transmitting terminal system can be made receiving device to be detected at a distance, thus realize waking up at a distance of wireless receiving device; And supporting the use by permanent magnet in GMR switch module in transmitting terminal system and receiving device, ensure that the reliability of wireless receiving device is waken up, thus avoid the safety problem caused by transmitting terminal system false wake-up that interference causes.
The technical solution of the utility model is achieved in that
According to an aspect of the present utility model, provide a kind of wireless electric energy transmission device.
This wireless electric energy transmission device comprises giant magnetoresistance (GMR) switch module and is connected to the transmitting terminal system of GMR switch module;
Wherein, GMR switch module for detecting the magnetic field of permanent magnet in radio energy receiving device, and when magnetic field being detected, sends digital quantity signal to transmitting terminal system;
Transmitting terminal system is used for after receiving the digital quantity signal from GMR switch module, to radio energy receiving device electric energy transmitting.
Wherein, GMR switch module comprises GMR transducer, signal processor, comparator, wherein,
GMR transducer is connected to signal processor, for detecting the magnetic field intensity from permanent magnet, and exports analog signals to signal processor based on magnetic field intensity;
Signal processor is connected to comparator, for receiving the analog signals from GMR transducer, and carrying out analog-to-digital conversion to analog signals, obtaining digital quantity signal, and exporting digital quantity signal to comparator;
Comparator is connected to transmitting terminal system, for receiving the digital quantity signal from signal processor, and digital quantity signal and predetermined threshold are compared, when comparative result be digital quantity signal higher than predetermined threshold, export digital quantity signal to transmitting terminal system.
Wherein, transmitting terminal system comprises processor and wireless power transmission module, wherein,
Processor is connected to GMR switch module, for receiving the digital quantity signal from GMR switch module, waking the transmitting terminal system being in holding state up, and digital quantity signal is sent to wireless power transmission module;
Wireless power transmission module, for based on digital quantity signal, to radio energy receiving device electric energy transmitting.
Wherein, processor is micro-control unit (MCU).
The utility model, by using GMR switch module in wireless electric energy transmission device, makes transmitting terminal system receiving device can be detected at a distance, thus achieves waking up at a distance of wireless receiving device; By supporting the use of permanent magnet in GMR switch module in transmitting terminal system and receiving device, ensure that the reliability of wireless receiving device is waken up, thus avoid the system safety problem that magnetic interference causes caused by transmitting terminal system false wake-up.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the block diagram of the wireless electric energy transmission device according to the utility model embodiment;
Fig. 2 is the fundamental diagram of the wireless electric energy transmission device according to the utility model embodiment;
Fig. 3 is the GMR switch module fundamental diagram according to the utility model embodiment;
Fig. 4 is the fundamental diagram of the wireless electric energy transmission device according to the utility model one specific embodiment;
Fig. 5 is the workflow diagram of the wireless electric energy transmission device according to the utility model embodiment;
Fig. 6 is the GMR switch module fundamental diagram according to the utility model one specific embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, the every other embodiment that those of ordinary skill in the art obtain, all belongs to the scope of the utility model protection.
According to embodiment of the present utility model, provide a kind of wireless electric energy transmission device.
As shown in Figure 1, comprise according to the wireless electric energy transmission device of the utility model embodiment:
This wireless electric energy transmission device comprises GMR switch module 11 and is connected to the transmitting terminal system 12 of GMR switch module;
Wherein, GMR switch module 11 for detecting the magnetic field of permanent magnet in radio energy receiving device, and when magnetic field being detected, sends digital quantity signal to transmitting terminal system 12;
Transmitting terminal system 12 for after receiving the digital quantity signal from GMR switch module 11, to radio energy receiving device electric energy transmitting.
By such scheme of the present utility model, transmitting terminal system can be made receiving device to be detected at a distance, thus realize waking up at a distance of wireless receiving device; And supporting the use by permanent magnet in GMR switch module in transmitting terminal system and receiving device, ensure that the reliability of wireless receiving device is waken up, thus avoid the safety problem caused by transmitting terminal system false wake-up that interference causes.
In the above-described embodiments, GMR switch module is as a kind of novel proximity test device, a digital quantity switching signal can be provided by the change detecting faint magnetic field intensity, and this digital quantity switching signal is sent to transmitting terminal system, therefore, when the permanent magnet range transmission end system of receiving terminal electrical equipment is far away, GMR switch module also can detect the existence of permanent magnet, can be so just that transmitting terminal system also can detect the close of receiving device in larger distance, thus avoid the problem waking hypotelorism up to radio energy current-collecting device.
Wherein, in one embodiment, GMR switch module can comprise GMR transducer (not shown), signal processor (not shown), comparator (not shown), wherein,
GMR transducer can be connected to signal processor, and for detecting the magnetic field intensity from permanent magnet, and export analog signals to signal processor based on magnetic field intensity;
Signal processor then can be connected to comparator, for receiving the analog signals from GMR transducer, and carrying out analog-to-digital conversion to analog signals, obtaining digital quantity signal, and exporting digital quantity signal to comparator;
Comparator is then connected to transmitting terminal system 12, for receiving the digital quantity signal from signal processor, and digital quantity signal and predetermined threshold are compared, when comparative result be digital quantity signal higher than predetermined threshold, export digital quantity signal to transmitting terminal system 12.
And in another embodiment, transmitting terminal system 12 can comprise processor (not shown) and wireless power transmission module (not shown), wherein,
Processor is connected to GMR switch module, for receiving the digital quantity signal from GMR switch module, when receiving digital quantity signal, the transmitting terminal system 12 being in holding state being waken up, and digital quantity signal is sent to wireless power transmission module;
Wireless power transmission module, then for based on digital quantity signal, to radio energy receiving device electric energy transmitting.
Wherein, in one embodiment, processor is MCU.
In order to better understand the technical solution of the utility model, the fundamental diagram below in conjunction with wireless electric energy transmission device is described in detail.
As shown in Figure 2, transmitting terminal system beginning is in holding state, and when receiving terminal system from afar near or when being positioned in transmitting terminal system, GMR switch module then can detect the close of receiving terminal system, and send digital quantity signal (being called on-off model here) to transmitting terminal system, and the processor of transmitting terminal system (being MCU here) is when receiving the digital quantity signal (being called wake-up signal here) from GMR switch module, the transmitting terminal system be under holding state will be waken up, and transmitting terminal system is in order to better transmission receiving end device being carried out to radio energy, also whether can put into receiving end device and judge, when determining that receiving terminal current-collecting device is placed into, transmitting terminal system starts the transmission carrying out radio energy to receiving terminal system, and receiving terminal current-collecting device is when receiving the electric energy from transmitting terminal system, also startup can be waken up from holding state.
Wherein, for GMR switch module, in one embodiment, GMR switch module can be positioned in transmitting terminal system, it can be made up of GMR transducer and peripheral circuit, GMR switch module fundamental diagram as shown in Figure 3, GMR transducer is for detecting the magnetic field intensity of the permanent magnet from receiving terminal electrical equipment, wherein, permanent magnet is positioned in receiving end device, GMR transducer exports analog signals to peripheral circuit based on the magnetic field intensity detected, and due to the wake-up signal of transmitting terminal system be digital quantity signal, but the signal that GMR transducer sends is analog signals, therefore, peripheral circuit needs amplify the analog signals from GMR transducer and compare process, transmitting terminal system is exported to after making it be converted into digital quantity signal, wherein, in actual applications, peripheral circuit can carry out amplification process to the analog signals from GMR transducer received, it is made to be converted into digital quantity signal, and the mode by digital quantity signal is compared with the threshold value preset, when comparative result be digital quantity signal higher than the threshold value preset, by GMR switch module, digital quantity signal is sent to the processor (being MCU) of transmitting terminal system here.
And the processor of transmitting terminal (being MCU here) is after receiving digital quantity signal, then digital quantity signal is sent to the wireless power transmission module of transmitting terminal system, and wireless power transmission module will carry out the transmission of electric energy to radio energy current-collecting device based on digital quantity signal.
In addition, conveniently understand the technical solution of the utility model, the block diagram below in conjunction with wireless electric energy transmission device is as shown in Figure 4 described in detail the technical solution of the utility model.
As can be seen from Figure 4, transmitting terminal system not only comprises power module, control module (being MCU processor here), driver module, outside inversion module and feedback module, also comprises GMR switch module.
It is in running order or holding state that control module then controls whole system, when there being receiving device to carry out work or receiving device just left moment (when GMR switch module senses the changes of magnetic field of receiving terminal magnetic material) of transmitting terminal system, system is then operating state; After receiving device leaves transmitting terminal system a period of time, system then enters holding state, and the concrete time wherein is then determined by the transmitting coil residual amount of energy of control module and resonance modules.
Concrete, when under transmitting terminal system is in running order, power module is all module for power supply of system, control module then for output pulse width modulation (PWM) ripple to driver module, transmitting coil is then for transferring energy to receiving terminal;
And when transmitting terminal system is under holding state, the controlled module of power module controlled, and only powers to control module and GMR switch module, stops as other module for power supply, control module then also can stop the output of PWM waveform, makes transmitting coil stop emitted energy.
For the control module of system, it mainly carrys out decision-making system by the state of GMR switch module is answer in running order or holding state, flow chart as shown in Figure 5, system judges normally work or be in holding state by the change of magnetic induction intensity, specifically, first need to carry out initialization to transmitting terminal system (being charger) here, system is made to enter standby phase, then, system is by the change of magnetic induction intensity, judge whether receiving device has been placed in supply district, if judged result is no, then system keeps holding state, contrary, if judged result is yes, then the transmitting terminal system be under holding state is waken up, and receiving device is carried out to the transmission of radio energy, and in transmitting procedure, system then can be monitored the change of magnetic induction intensity, when determining that receiving device is not in supply district, system enters holding state after waiting for blink, and wherein, the concrete time of wait is then determined by the transmitting coil residual amount of energy of control module and resonance modules.
Wherein, system is when the change by magnetic induction intensity judges normally work or be in holding state, concrete operation is then come by GMR switch module and control module, wherein, GMR switch module exports low and high level or high-low voltage to control module by the power in magnetic field responding to receiving device, and control module then can judge that system is should in running order or holding state accordingly.
And for GMR switch module, as shown in Figure 6, in the present embodiment, GMR switch module comprises GMR sensor unit, signal amplification unit circuit, default threshold signal, sampled signal comparison circuit and signal processing unit to its theory diagram;
When transmitting coil and receiving coil are in normal range of operation, first the GMR sensor unit of GMR switch module detects the magnetic flux density change of the magnetic material of receiving device, and export analog signals and amplify to signal amplification unit circuit, then sampled signal comparison circuit then can be sampled to the analog signals after amplification, and itself and predetermined threshold signal are made comparisons, then, signal can be sent to signal processing unit by sampling comparison circuit, analog signals is then obtaining the digital quantity signal of a low and high level after signal processing unit processes, and be sent to MCU control module, and MCU control unit is after receiving this digital quantity signal, control whole system is in holding state or normal operating conditions.
Wherein, the magnetic material (permanent magnet) of receiving device is positioned at receiving terminal, and it can be placed in certain position near receiving coil, and GMR switch module is then placed in transmitting terminal system.
The sensitivity of GMR switch module and the magnetic field intensity of receiving terminal magnetic material then will judge according to the scope of transmitting coil and the normal operating distance of receiving coil, in actual applications, can sense that receiving device is for the best with transmitting terminal system.Wherein, distance of reaction can not be too far away, otherwise easily cause misoperation; Distance of reaction also should not be too near, otherwise not easily wake up from holding state when receiving terminal is placed.
In sum, by means of technique scheme of the present utility model, by using GMR switch module in wireless electric energy transmission device, make transmitting terminal system the Weak magentic-field change of permanent magnet in receiving device can be detected at a distance, thus achieve waking up at a distance of wireless receiving device, possess stronger practicality; By supporting the use of permanent magnet in GMR switch module in transmitting terminal system and receiving device, reduce the possibility of transmitting terminal system error starting, thus ensure that the fail safe of wireless transmitting system, and ensure that the reliability of wireless receiving device is waken up.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (4)
1. a wireless electric energy transmission device, is characterized in that, comprises giant magnetoresistance GMR switch module and the transmitting terminal system being connected to described GMR switch module;
Wherein, described GMR switch module for detecting the magnetic field of permanent magnet in radio energy receiving device, and when described magnetic field being detected, sends digital quantity signal to described transmitting terminal system;
Described transmitting terminal system is used for after receiving the digital quantity signal from GMR switch module, to described radio energy receiving device electric energy transmitting.
2. wireless electric energy transmission device according to claim 1, is characterized in that, described GMR switch module comprises GMR transducer, signal processor, comparator, wherein,
Described GMR transducer is connected to described signal processor, for detecting the magnetic field intensity from described permanent magnet, and exports analog signals to described signal processor based on described magnetic field intensity;
Described signal processor is connected to described comparator, for receiving the described analog signals from described GMR transducer, and carrying out analog-to-digital conversion to described analog signals, obtaining digital quantity signal, and exporting described digital quantity signal to described comparator;
Described comparator is connected to described transmitting terminal system, for receiving the digital quantity signal from described signal processor, and described digital quantity signal and predetermined threshold are compared, when comparative result be digital quantity signal higher than predetermined threshold, export described digital quantity signal to transmitting terminal system.
3. wireless electric energy transmission device according to claim 1, is characterized in that, described transmitting terminal system comprises processor and wireless power transmission module, wherein,
Described processor is connected to described GMR switch module, for receiving the digital quantity signal from GMR switch module, wakes the transmitting terminal system being in holding state up, and described digital quantity signal is emitted to described wireless power transmission module;
Described wireless power transmission module, for based on described digital quantity signal, to described radio energy receiving device electric energy transmitting.
4. wireless electric energy transmission device according to claim 3, is characterized in that, described processor is micro-control unit MCU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201420422276.4U CN204231033U (en) | 2014-07-29 | 2014-07-29 | Wireless electric energy transmission device |
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| CN201420422276.4U CN204231033U (en) | 2014-07-29 | 2014-07-29 | Wireless electric energy transmission device |
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| CN204231033U true CN204231033U (en) | 2015-03-25 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105515382A (en) * | 2016-02-06 | 2016-04-20 | 青岛鲁渝能源科技有限公司 | Voltage stability control circuit of wireless power supply system |
| CN106451812A (en) * | 2016-12-05 | 2017-02-22 | 青岛鲁渝能源科技有限公司 | Awakening and sleeping control methods for wireless power transmission system |
| CN107942396A (en) * | 2017-12-08 | 2018-04-20 | 青岛众海汇智能源科技有限责任公司 | Metal detection alignment system and detecting and positioning method |
| CN118017712A (en) * | 2024-04-10 | 2024-05-10 | 荣耀终端有限公司 | Wireless charging circuit, control method and electronic equipment |
-
2014
- 2014-07-29 CN CN201420422276.4U patent/CN204231033U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105515382A (en) * | 2016-02-06 | 2016-04-20 | 青岛鲁渝能源科技有限公司 | Voltage stability control circuit of wireless power supply system |
| CN106451812A (en) * | 2016-12-05 | 2017-02-22 | 青岛鲁渝能源科技有限公司 | Awakening and sleeping control methods for wireless power transmission system |
| CN107942396A (en) * | 2017-12-08 | 2018-04-20 | 青岛众海汇智能源科技有限责任公司 | Metal detection alignment system and detecting and positioning method |
| CN118017712A (en) * | 2024-04-10 | 2024-05-10 | 荣耀终端有限公司 | Wireless charging circuit, control method and electronic equipment |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20220824 Address after: Room 201, Building A, No. 1, Qianwan 1st Road, Qianhai Shenzhen-Hong Kong Cooperation Zone, Shenzhen, Guangdong, 518102 (in Shenzhen Qianhai Commercial Secretary Co., Ltd.) Patentee after: SHENZHEN QIANHAI ZHENTAI COMMUNICATION TECHNOLOGY CO.,LTD. Address before: 266101 B2, 5th floor, block B, No.1 keyuanwei 1st Road, Laoshan District, Qingdao City, Shandong Province Patentee before: QINGDAO ZHONGHAI HUIZHI ENERGY TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right |