CN204441985U - Wireless charging device and the wireless charging system with it - Google Patents
Wireless charging device and the wireless charging system with it Download PDFInfo
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- CN204441985U CN204441985U CN201520204317.7U CN201520204317U CN204441985U CN 204441985 U CN204441985 U CN 204441985U CN 201520204317 U CN201520204317 U CN 201520204317U CN 204441985 U CN204441985 U CN 204441985U
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Abstract
The utility model discloses a kind of wireless charging device and have its wireless charging system, wireless charging device comprises: transmitting coil; Receiving coil; The first rectifier bridge be connected with receiving coil; The energy-storage module be connected with the first rectifier bridge; The second rectifier bridge be connected with load with receiving coil respectively; Control the first switch module of the second rectifier bridge, the first switch module is connected with the second rectifier bridge with receiving coil respectively; Pressure release module; Be connected to the second switch module between pressure release module and receiving coil; Voltage sample module is connected with the first rectifier bridge, the output voltage of voltage sample module acquires first rectifier bridge; Control module is connected with second switch module respectively with voltage sample module, the first switch module.The utility model efficiently solves wireless receive coil damage to load when under-voltage, extends the life-span of load and device work.
Description
Technical field
The utility model relates to wireless power taking technical field, particularly a kind of wireless charging device and a kind of wireless charging system.
Background technology
At present, occur increasing magnetic resonance on the market, power taking scheme that magnetic induction is wireless, but these schemes all there is certain leak in design.Such as, when transmitting coil output voltage is not enough, or transmitting coil and receiving coil are at a distance of time too far away, cause receiving coil to be coupled out low voltage, namely under-voltage.And load long-term work is in under-voltage environment, electric current can rise, and burns load, and the under-voltage transistor that also makes is in half conducting, semi-closed state for a long time simultaneously, substantially reduces device lifetime.
Utility model content
The utility model is intended to solve one of technical problem in correlation technique at least to a certain extent.For this reason, an object of the present utility model is to propose a kind of protection load, extends load and the wireless charging device in device work life-span.
Another object of the present utility model is to propose a kind of wireless charging system.
To achieve these goals, comprise according to the wireless charging device of the utility model embodiment: transmitting coil; Receiving coil; The first rectifier bridge be connected with described receiving coil; The energy-storage module be connected with described first rectifier bridge; The second rectifier bridge be connected with load with described receiving coil respectively; Control the first switch module of described second rectifier bridge, described first switch module is connected with described second rectifier bridge with described receiving coil respectively; Pressure release module; Be connected to the second switch module between described pressure release module and described receiving coil; Voltage sample module, described voltage sample module is connected with described first rectifier bridge, the output voltage of the first rectifier bridge described in described voltage sample module acquires; And control module, described control module is connected with described second switch module respectively with described voltage sample module, described first switch module, when the output voltage of described first rectifier bridge is less than predetermined reference voltage, described control module controls described second rectifier bridge by described first switch module and closes, and closed described second switch module enters described pressure release module to make the output current of described receiving coil.
According to the wireless charging device of the utility model embodiment, when the output voltage of described first rectifier bridge is less than predetermined reference voltage, described control module controls described second rectifier bridge by described first switch module and closes, and closed described second switch module enters described pressure release module to make the output current of described receiving coil.This wireless charging device avoids loaded work piece under under-voltage environment, efficiently solves wireless receive coil damage to load when under-voltage, extends the life-span of load and device work.
Further, described voltage sample module comprises: the first resistance, and the first end of described first resistance is connected with the output of described first rectifier bridge; And second resistance, the first end of described second resistance is connected with the second end of described first resistance, second end ground connection of described second resistance, have first node between the first end of described second resistance and the second end of described first resistance, described first node is as the output of described voltage sample module.
Further, described control module comprises: comparator, the first input end of described comparator is connected with the output of described voltage sample module, and the second input of described comparator is connected with described energy-storage module, and the output of described comparator is as the first output of described control module; And inverter, the input of described inverter is connected with the output of described comparator, and the output of described inverter is as the second output of described control module.
Further, described first switch module comprises: the first switching tube, and the control end of described first switching tube is connected with the first output of described control module, and the first end of described first switching tube is connected with described energy-storage module; And first relay, the control end of described first relay is connected with the second end of described first switching tube, and the first end of described first relay is connected with described receiving coil, and the second end of described first relay is connected with described second rectifier bridge.
Further, described second switch module comprises: second switch pipe, and the control end of described second switch pipe is connected with the second output of described control module, and the first end of described second switch pipe is connected with described energy-storage module; And second relay, the control end of described second relay is connected with described receiving coil, and the first end of described second relay is connected with the second end of described second switch pipe, and the second end of described second relay is connected with described pressure release module.
Further, described first switching tube and described second switch pipe are at least one PMOS or at least one triode.
Further, described pressure release module is cement resistor or high-power resistance.
To achieve these goals, comprise according to the wireless charging system of the utility model embodiment: described wireless charging device; And the load to be connected with described wireless charging device.
According to the wireless charging system of the utility model embodiment, avoid loaded work piece under under-voltage environment by wireless charging device, efficiently solve wireless receive coil damage to load when under-voltage, extend the life-span of load and device work.
Accompanying drawing explanation
Fig. 1 is the block diagram of the wireless charging device according to the utility model embodiment;
Fig. 2 is the structural representation of the wireless charging device according to the utility model embodiment; And
Fig. 3 is the schematic diagram of the wireless charging system according to the utility model embodiment.
Embodiment
Be described below in detail embodiment of the present utility model, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.
Below with reference to the accompanying drawings wireless charging device and the wireless charging system of the utility model embodiment are described.
As shown in Figure 1, comprise according to the wireless charging device 1 of the utility model embodiment: transmitting coil 11, receiving coil 12, first rectifier bridge 13, energy-storage module 14, second rectifier bridge 15, first switch module 16, pressure release module 17, second switch module 18, voltage sample module 19 and control module 110.Wherein, the first rectifier bridge 13 is connected with receiving coil 12.Energy-storage module 14 is connected with the first rectifier bridge 13.Second rectifier bridge 15 is connected with load 2 with receiving coil 12 respectively.First switch module 16 controls the second rectifier bridge 15, first switch module 16 and is connected with the second rectifier bridge 15 with receiving coil 12 respectively.Second switch module 18 is connected between pressure release module 17 and receiving coil 12.Voltage sample module 19 is connected with the first rectifier bridge 13, and voltage sample module 19 gathers the output voltage of the first rectifier bridge 13.Control module 110 is connected with second switch module 18 respectively with voltage sample module 19, first switch module 16, when the output voltage of the first rectifier bridge 13 is less than predetermined reference voltage ref, control module 110 controls the second rectifier bridge 15 by the first switch module 16 and closes, and closed second switch module 18 enters pressure release module 17 to make the output current of receiving coil 12.
Further, in an embodiment of the present utility model, as shown in Figure 2, voltage sample module 19 can comprise: the first resistance R1 and the second resistance R2.Wherein, the first end of the first resistance R1 is connected with the output of the first rectifier bridge 13.The first end of the second resistance R2 is connected with second end of the first resistance R1, the second end ground connection of the second resistance R2, have first node J1 between the first end of the second resistance R2 and second end of the first resistance R1, first node J1 is as the output of voltage sample module 19.
Further, in an embodiment of the present utility model, as shown in Figure 2, control module 110 can comprise: comparator 111 and inverter 112.Wherein, the first input end of comparator 111 is connected with the output of voltage sample module 19, second input of comparator 111 is connected with energy-storage module 14, second input terminal voltage of comparator 111 is predetermined reference voltage ref, and the output of comparator 111 is as the first output of control module 110.The input of inverter 112 is connected with the output of comparator 111, and the output of inverter 112 is as the second output of control module 110.Particularly, the first resistance R1 and the output voltage of the second resistance R2 to the first rectifier bridge 13 carry out dividing potential drop, and comparator 111 is selected whether to overturn according to the output voltage of the second input terminal voltage and voltage sample module 19.Wherein, in actual applications, the resistance of the first resistance R1 and the second resistance R2 can set according to the second input terminal voltage of comparator 111.
Further, in an embodiment of the present utility model, as shown in Figure 2, the first switch module 16 can comprise: the first switching tube 161 and the first relay 162.Wherein, the control end of the first switching tube 161 such as PMOS is connected with the first output of control module 110, and the first end of the first switching tube 161 is connected with energy-storage module 14.The control end of the first relay 162 is connected with the second end of the first switching tube 161, and the first end of the first relay 162 is connected with receiving coil 12, and the second end of the first relay 162 is connected with the second rectifier bridge 15.Particularly, the first switching tube 161 is selected whether to open the first relay 162, first relay 162 according to the output level of comparator 111 to control connection between receiving coil 12 and load 2 closed or disconnect.
Further, in an embodiment of the present utility model, as shown in Figure 2, second switch module 18 can comprise: second switch pipe 181 and the second relay 182.Wherein, the control end of second switch pipe 181 such as PMOS is connected with the second output of control module 110, and the first end of second switch pipe 181 is connected with energy-storage module 14.The control end of the second relay 182 is connected with receiving coil 12, and the first end of the second relay 182 is connected with the second end of second switch pipe 181, and the second end of the second relay 182 is connected with pressure release module 17.Particularly, second switch pipe 181 is selected whether to open the second relay 182, second relay 182 according to the output level of inverter 112 to control connection between receiving coil 12 and pressure release module 17 closed or disconnect.Particularly, in an embodiment of the present utility model, pressure release module 17 can be cement resistor or high-power resistance etc.Further, in an embodiment of the present utility model, the first switching tube 161 and second switch pipe 181 can be at least one PMOS or at least one triode etc.
Particularly, in an embodiment of the present utility model, the operation principle of wireless charging device 1 when receiving coil 12 is under-voltage is as follows: when receiving coil 12 under-voltage (voltage is lower than some values), by the first resistance R1 and the second resistance R2, produce the voltage lower than predetermined reference voltage ref.Now, comparator 111 output low level, overturns through inverter 112 simultaneously, and inverter 112 exports high level.Because of comparator 111 output low level, the first switching tube 161 ends.Because the first switching tube 161 ends, the second end output low level of the first switching tube 161, the first relay 162 cuts out, and now, the connection between whole receiving coil 12 and load 2 disconnects.Because inverter 112 exports high level, second switch pipe 181 is opened.Because second switch pipe 181 is opened, therefore the second relay 182 is opened, and now, the electric current of receiving coil 12 carries out pressure release through the second relay 182 and cement resistor/high-power resistance etc.
According to the wireless charging device of the utility model embodiment, when the output voltage of the first rectifier bridge is less than predetermined reference voltage, control module controls the second rectifier bridge by the first switch module and closes, and closed second switch module enters pressure release module to make the output current of receiving coil.This wireless charging device avoids loaded work piece under under-voltage environment, efficiently solves wireless receive coil damage to load when under-voltage, extends the life-span of load and device work.
In order to realize above-described embodiment, the utility model also proposes a kind of wireless charging system, as shown in Figure 3, and the load 2 that this wireless charging system comprises above-mentioned wireless charging device 1 and is connected with wireless charging device 1.
According to the wireless charging system of the utility model embodiment, avoid loaded work piece under under-voltage environment by wireless charging device, efficiently solve wireless receive coil damage to load when under-voltage, extend the life-span of load and device work.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present utility model or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this specification or example and different embodiment or example can carry out combining and combining by those skilled in the art.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In description of the present utility model, the implication of " multiple " is at least two, such as two, three etc., unless otherwise expressly limited specifically.
Describe and can be understood in flow chart or in this any process otherwise described or method, represent and comprise one or more for realizing the module of the code of the executable instruction of the step of specific logical function or process, fragment or part, and the scope of preferred implementation of the present utility model comprises other realization, wherein can not according to order that is shown or that discuss, comprise according to involved function by the mode while of basic or by contrary order, carry out n-back test, this should understand by embodiment person of ordinary skill in the field of the present utility model.
In flow charts represent or in this logic otherwise described and/or step, such as, the sequencing list of the executable instruction for realizing logic function can be considered to, may be embodied in any computer-readable medium, for instruction execution system, device or equipment (as computer based system, comprise the system of processor or other can from instruction execution system, device or equipment instruction fetch and perform the system of instruction) use, or to use in conjunction with these instruction execution systems, device or equipment.With regard to this specification, " computer-readable medium " can be anyly can to comprise, store, communicate, propagate or transmission procedure for instruction execution system, device or equipment or the device that uses in conjunction with these instruction execution systems, device or equipment.The example more specifically (non-exhaustive list) of computer-readable medium comprises following: the electrical connection section (electronic installation) with one or more wiring, portable computer diskette box (magnetic device), random access memory (RAM), read-only memory (ROM), erasablely edit read-only memory (EPROM or flash memory), fiber device, and portable optic disk read-only memory (CDROM).In addition, computer-readable medium can be even paper or other suitable media that can print described program thereon, because can such as by carrying out optical scanner to paper or other media, then carry out editing, decipher or carry out process with other suitable methods if desired and electronically obtain described program, be then stored in computer storage.
Should be appreciated that each several part of the present utility model can realize with hardware, software, firmware or their combination.In the above-described embodiment, multiple step or method can with to store in memory and the software performed by suitable instruction execution system or firmware realize.Such as, if realized with hardware, the same in another embodiment, can realize by any one in following technology well known in the art or their combination: the discrete logic with the logic gates for realizing logic function to data-signal, there is the application-specific integrated circuit (ASIC) of suitable combinational logic gate circuit, programmable gate array (PGA), field programmable gate array (FPGA) etc.
Those skilled in the art are appreciated that realizing all or part of step that above-described embodiment method carries is that the hardware that can carry out instruction relevant by program completes, described program can be stored in a kind of computer-readable recording medium, this program perform time, step comprising embodiment of the method one or a combination set of.
In addition, each functional unit in each embodiment of the utility model can be integrated in a processing module, also can be that the independent physics of unit exists, also can be integrated in a module by two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, and the form of software function module also can be adopted to realize.If described integrated module using the form of software function module realize and as independently production marketing or use time, also can be stored in a computer read/write memory medium.
The above-mentioned storage medium mentioned can be read-only memory, disk or CD etc.Although illustrate and described embodiment of the present utility model above, be understandable that, above-described embodiment is exemplary, can not be interpreted as restriction of the present utility model, those of ordinary skill in the art can change above-described embodiment, revises, replace and modification in scope of the present utility model.
Claims (8)
1. a wireless charging device, is characterized in that, comprising:
Transmitting coil;
Receiving coil;
The first rectifier bridge be connected with described receiving coil;
The energy-storage module be connected with described first rectifier bridge;
The second rectifier bridge be connected with load with described receiving coil respectively;
Control the first switch module of described second rectifier bridge, described first switch module is connected with described second rectifier bridge with described receiving coil respectively;
Pressure release module;
Be connected to the second switch module between described pressure release module and described receiving coil;
Voltage sample module, described voltage sample module is connected with described first rectifier bridge, the output voltage of the first rectifier bridge described in described voltage sample module acquires; And
Control module, described control module is connected with described second switch module respectively with described voltage sample module, described first switch module, when the output voltage of described first rectifier bridge is less than predetermined reference voltage, described control module controls described second rectifier bridge by described first switch module and closes, and closed described second switch module enters described pressure release module to make the output current of described receiving coil.
2. wireless charging device as claimed in claim 1, it is characterized in that, described voltage sample module comprises:
First resistance, the first end of described first resistance is connected with the output of described first rectifier bridge; And
Second resistance, the first end of described second resistance is connected with the second end of described first resistance, second end ground connection of described second resistance, have first node between the first end of described second resistance and the second end of described first resistance, described first node is as the output of described voltage sample module.
3. wireless charging device as claimed in claim 1, it is characterized in that, described control module comprises:
Comparator, the first input end of described comparator is connected with the output of described voltage sample module, and the second input of described comparator is connected with described energy-storage module, and the output of described comparator is as the first output of described control module; And
Inverter, the input of described inverter is connected with the output of described comparator, and the output of described inverter is as the second output of described control module.
4. wireless charging device as claimed in claim 3, it is characterized in that, described first switch module comprises:
First switching tube, the control end of described first switching tube is connected with the first output of described control module, and the first end of described first switching tube is connected with described energy-storage module; And
First relay, the control end of described first relay is connected with the second end of described first switching tube, and the first end of described first relay is connected with described receiving coil, and the second end of described first relay is connected with described second rectifier bridge.
5. wireless charging device as claimed in claim 4, it is characterized in that, described second switch module comprises:
Second switch pipe, the control end of described second switch pipe is connected with the second output of described control module, and the first end of described second switch pipe is connected with described energy-storage module; And
Second relay, the control end of described second relay is connected with described receiving coil, and the first end of described second relay is connected with the second end of described second switch pipe, and the second end of described second relay is connected with described pressure release module.
6. wireless charging device as claimed in claim 5, it is characterized in that, described first switching tube and described second switch pipe are at least one PMOS or at least one triode.
7. wireless charging device as claimed in claim 1, it is characterized in that, described pressure release module is cement resistor or high-power resistance.
8. a wireless charging system, is characterized in that, comprising:
Wireless charging device according to any one of claim 1-7; And
The load be connected with described wireless charging device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520204317.7U CN204441985U (en) | 2015-04-07 | 2015-04-07 | Wireless charging device and the wireless charging system with it |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520204317.7U CN204441985U (en) | 2015-04-07 | 2015-04-07 | Wireless charging device and the wireless charging system with it |
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| CN204441985U true CN204441985U (en) | 2015-07-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105098704A (en) * | 2015-07-06 | 2015-11-25 | 宁波微鹅电子科技有限公司 | Undervoltage protection circuit, undervoltage protection method and wireless power transmission device |
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2015
- 2015-04-07 CN CN201520204317.7U patent/CN204441985U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105098704A (en) * | 2015-07-06 | 2015-11-25 | 宁波微鹅电子科技有限公司 | Undervoltage protection circuit, undervoltage protection method and wireless power transmission device |
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