CN209516747U - Electric energy receives circuit and wireless charging system - Google Patents
Electric energy receives circuit and wireless charging system Download PDFInfo
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- CN209516747U CN209516747U CN201920285490.2U CN201920285490U CN209516747U CN 209516747 U CN209516747 U CN 209516747U CN 201920285490 U CN201920285490 U CN 201920285490U CN 209516747 U CN209516747 U CN 209516747U
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Abstract
It discloses a kind of electric energy and receives circuit and wireless charging system.The bridge arm midpoint that rectification circuit is connected to by the way that at least one rectifier cell is arranged forms auxiliary power supply circuit, at least one rectifier cell of the auxiliary power supply circuit multiplexer rectification circuit, which is rectified, is powered using obtaining direct current as control circuit.Not needing setting reverse-filling diode as a result, can prevent battery power from flowing backward, it is possible to reduce the electric energy loss of reverse-filling diode when charging normal.
Description
Technical field
The utility model relates to power electronics fields, and in particular to a kind of electric energy receives circuit and wireless charging system
System.
Background technique
Electronic electric equipment generally requires it could be maintained to work normally to built-in battery charging.It usually requires various each
The charging cable of sample connects adapter or commercial power socket, the battery of equipment could be given to charge.Wireless power transmission technology is gradually general
And when electric energy receiving coil built in electronic electric equipment and circuit, equipment need to be only placed on around electric energy transmission device
It can charge the battery, facilitate entire charging process.Meanwhile it is hidden safely to also avoid various charging cable brings
Suffer from, can also accomplish electrical equipment airtight waterproof, greatly improve the safety that electrical equipment uses.
Existing electric energy receives circuit and generallys use framework as shown in Figure 1.Electric energy transmitting is placed in when electric energy receives circuit
When around coil, the coil that electric energy receives circuit is inducted high-frequency alternating current, becomes direct current, auxiliary power supply electricity by rectification circuit
Road takes electricity after rectification circuit, powers to control circuit.Control circuit control rectification circuit or other components make rectification circuit
It exports suitable DC voltage or electric current charges the battery, setting reverse-filling diode Dp is for preventing electricity after charging
Pond electric energy flows backward to auxiliary power supply circuit.
Although however, can prevent electric energy from flowing backward to auxiliary power supply electricity after charging by the way that reverse-filling diode is arranged
Road, but also will increase the cost of the loss of electric energy and circuit when charging normal.
Utility model content
In view of this, receiving circuit and wireless charging system the purpose of this utility model is to provide a kind of electric energy can save
Save the electric energy loss of the reverse-filling diode when charging normal.
In a first aspect, the utility model embodiment provides a kind of electric energy reception circuit, the electric energy receives circuit and includes:
Receiving side resonance circuit；
There is rectification circuit at least one bridge arm midpoint to be connected to the receiving side resonance circuit；
Control circuit；And
Auxiliary power supply circuit is connected at least one described bridge arm midpoint, is configured as being multiplexed the rectification circuit extremely
A few rectifier cell is rectified to obtain direct current as control circuit power supply.
Preferably, the rectification circuit includes:
First rectifier cell is connected between the first end of the receiving side resonance circuit and the first end of battery；
Second rectifier cell is connected between the first end and second end of the receiving side resonance circuit；And
First bridge arm midpoint is connected to the first end of the receiving side resonance circuit, be located at first rectifier cell with
Between second rectifier cell.
Preferably, the auxiliary power supply circuit includes:
Third rectifier cell is connected between first bridge arm midpoint and the second end of the receiving side resonance circuit；
The second rectifier cell that the third rectifier cell is multiplexed the rectification circuit is rectified to obtain direct current and be
The control circuit power supply.
Preferably, first rectifier cell and second rectifier cell are diode or controlled switching element.
Preferably, the third rectifier cell is diode, and the diode power of the third rectifier cell is less than institute
State the power of the first rectifier cell and second rectifier cell.
Preferably, the rectification circuit includes:
First rectifier cell is connected between the first end of the receiving side resonance circuit and the first end of battery；
Second rectifier cell is connected between the second end of the receiving side resonance circuit and the first end of battery；
Third rectifier cell is connected between the first end of the receiving side resonance circuit and the second end of battery；
4th rectifier cell is connected between the second end of the receiving side resonance circuit and the second end of battery；
First bridge arm midpoint is connected to the first end of the receiving side resonance circuit, be located at first rectifier cell with
Between the third rectifier cell；And
Second bridge arm midpoint is connected to the second end of the receiving side resonance circuit, be located at second rectifier cell with
Between 4th rectifier cell.
Preferably, the auxiliary power supply circuit includes:
5th rectifier cell is connected between first bridge arm midpoint and the second end of battery；And
6th rectifier cell is connected between second bridge arm midpoint and the second end of battery；
5th rectifier cell and the 6th rectifier cell are multiplexed the third rectifier cell and the of the rectification circuit
Four rectifier cells are rectified to obtain direct current as control circuit power supply.
Preferably, first rectifier cell, second rectifier cell, the third rectifier cell and described 4th whole
Fluid element is diode or controlled switching element.
Preferably, the 5th rectifier cell and the 6th rectifier cell are diode, and the 5th rectifier cell
It is less than first rectifier cell, second rectifier cell, described the with the power of the diode of the 6th rectifier cell
The power of three rectifier cells and the 4th rectifier cell.
Second aspect, the utility model embodiment provide a kind of wireless charging system, the system comprises:
Electric energy transmitting circuit is configured as transmitting electric energy；And
Electric energy as described in relation to the first aspect receives circuit, and the electric energy for being configured as receiving the electric energy transmitting circuit transmitting is
Battery charging.
The bridge that the technical solution of the utility model embodiment is connected to rectification circuit by the way that at least one rectifier cell is arranged
Arm midpoint forms auxiliary power supply circuit, at least one rectifier cell of the auxiliary power supply circuit multiplexer rectification circuit is rectified
It is powered using obtaining direct current as control circuit.Not needing setting reverse-filling diode as a result, can prevent battery power from flowing backward, can
To save the electric energy loss of the reverse-filling diode when charging normal.
Detailed description of the invention
By referring to the drawings to the description of the utility model embodiment, the above-mentioned and other mesh of the utility model
, feature and advantage will be apparent from, in the accompanying drawings:
Fig. 1 is that the electric energy of the prior art receives the circuit diagram of circuit；
Fig. 2 is a kind of structural schematic diagram of embodiment wireless charging system of the utility model；
Fig. 3 is the circuit diagram that the utility model first embodiment electric energy receives circuit；
Fig. 4 is the circuit diagram that the utility model second embodiment electric energy receives circuit；
Fig. 5 is the circuit diagram that the utility model 3rd embodiment electric energy receives circuit；
Fig. 6 is the circuit diagram that the utility model fourth embodiment electric energy receives circuit.
Specific embodiment
The utility model is described below based on embodiment, but the utility model is not restricted to these implementations
Example.It is detailed to describe some specific detail sections below in the datail description of the utility model.To those skilled in the art
The utility model can also be understood completely in the description of part without these details for member.In order to avoid obscuring the utility model
Essence, there is no narrations in detail for well known method, process, process, element and circuit.
In addition, it should be understood by one skilled in the art that provided herein attached drawing be provided to explanation purpose, and
What attached drawing was not necessarily drawn to scale.
It will also be appreciated that in the following description, " circuit " refers to be passed through electrically by least one element or sub-circuit
The galvanic circle that connection or electromagnetism connect and compose.When title element or the " connection of another element of circuit " being connected to " or element/circuit
" between two nodes when, it, which can be, is directly coupled or connected another element or there may be intermediary element, element it
Between connection can be physically, in logic or its combination.On the contrary, when claiming element " being directly coupled to " or " directly connecting
Be connected to " another element when, it is meant that the two be not present intermediary element.
Unless the context clearly requires otherwise, "include", "comprise" otherwise throughout the specification and claims etc. are similar
Word should be construed as the meaning for including rather than exclusive or exhaustive meaning；That is, be " including but not limited to " contains
Justice.
In the description of the present invention, it should be understood that term " first ", " second " etc. are used for description purposes only,
It is not understood to indicate or imply relative importance.In addition, in the description of the present invention, unless otherwise indicated, it is " more
It is a " it is meant that two or more.
Fig. 2 is a kind of structural schematic diagram of embodiment wireless charging system of the utility model.As shown in Fig. 2, wireless charging
System includes that electric energy transmitting circuit 1 and electric energy receive circuit 2.Electric energy transmitting circuit 1 includes inverter circuit 11 and emitting side resonance
Circuit 12.Radio energy receiving end 2 includes receiving side resonance circuit 21 and rectification circuit 22.Emitting side resonance circuit 12 and reception
Side resonance circuit 21 is intercoupled in a non-contact manner by the alternating magnetic field of resonant frequency, to realize that radio energy passes
It passs.Rectification circuit 22 is used to be converted in the alternating current that receiving side resonance circuit 21 is generated in response to alternating magnetic field direct current as electricity
Pond charging.
It should be understood that the electric energy transmitting circuit 1 that Fig. 2 is provided is only a kind of implementation of the present embodiment, the energy of other forms
Enough the circuit that circuit 2 intercouples is received with the electric energy in a non-contact manner by the alternating magnetic field of resonant frequency to be ok
Electric energy transmitting circuit as the utility model embodiment.
The present embodiment emits electric energy by electric energy transmitting circuit, and electric energy receives the circuit reception electric energy and charges for battery,
To realize wireless charging.
In one embodiment, it is as shown in Figure 3 to receive circuit for electric energy.Fig. 3 is that the utility model first embodiment electric energy connects
Receive the circuit diagram of circuit.As shown in figure 3, it includes receiving to survey resonance circuit 21, rectification circuit 22, auxiliary power supply that electric energy, which receives circuit,
Circuit 23 and battery 24.The auxiliary power supply circuit 23 is configured as being multiplexed at least one rectifier cell of the rectification circuit
It is rectified and is powered using obtaining direct current as control circuit (not shown).
In the present embodiment, receiving side resonance circuit 21 includes coil L, inductance L1 and capacitor C1.Wherein, inductance L1 and electricity
Hold C1 and forms resonant network.Resonance circuit 21 can incude the alternating magnetic field that the electric energy transmitting circuit generates as a result, to obtain
Corresponding alternating voltage.
In the present embodiment, rectification circuit 22 is Half bridge rectifier circuit, including the first rectifier cell and the second rectifier cell.
Wherein first rectifier cell is diode D1, and second rectifier cell is diode D2.Wherein, diode D1 is connected to
Between the first end a1 of receiving side resonance circuit 21 and the first end b1 of battery, diode D2 Opposite direction connection is in receiving side resonance electricity
Between the first end a1 and second end a2 on road 21.The rectification circuit 22 has a bridge arm midpoint, i.e., between D1 and D2
The first bridge arm midpoint d1.
Specifically, when charging normal, when the first end a1 output of receiving side resonance circuit 21 is forward current, electric current
The first end b1 of battery 24 is flowed to by diode D1, and receiving side resonance circuit 21 is finally back to by the second end b2 of battery 24
Second end a2.The closed circuit for flowing through battery 24 is formed at this time, can be charged to battery 24.In receiving side resonance
When the second end a2 output of circuit 21 is forward current, circuit is back to the first of receiving side resonance circuit 21 by diode D2
A1 is held, at this point, not charging to battery 24.It is charged by way of Half bridge rectifier to battery 24 as a result,.
After charging, due to the characteristic of diode unilateral conduction, diode D1 can prevent the electric energy of battery 24 from falling
It fills.It can prevent battery power from flowing backward thus, it is possible to not need setting reverse-filling diode, it is possible to reduce to prevent when charging normal
Flow backward the power consumption of diode and the cost of circuit design.
In the present embodiment, auxiliary power supply circuit 23 is configured as being multiplexed at least one rectification member of the rectification circuit 22
Part, which is rectified, is powered using obtaining direct current as control circuit.Specifically, auxiliary power supply circuit 23 includes third rectifier cell, filter
Wave capacitor C2 and DC-DC converter 23a.The third rectifier cell is diode D3.The diode D3 is connected to
Between one bridge arm midpoint d1 and the second end a2 of the receiving side resonance circuit 21, it is multiplexed the diode D2 of the rectification circuit 22
It is rectified to obtain direct current.Filter capacitor C2 can filter out the alternating current in electric current, obtain smoother direct current.Directly
The DC power conversion that stream-DC converter 23a is used to will acquire is the voltage for being suitble to control circuit, is supplied for the control circuit
Electricity.Specifically, when the first end a1 output of receiving side resonance circuit 21 is forward current, electric current is back to by diode D3
The second end a2 of receiving side resonance circuit 21.The closed circuit for flowing through auxiliary power supply circuit 23, auxiliary power supply are formed at this time
The available electric energy of circuit 23 powers to control circuit.It is forward current in the second end a2 output of receiving side resonance circuit 21
When, circuit is back to the first end a1 of receiving side resonance circuit 21 by diode D2, at this point, auxiliary power supply circuit 23 does not obtain
Electric energy does not need to power to control circuit.Auxiliary power supply circuit 23 can obtain electric energy pair by way of Half bridge rectifier as a result,
Control circuit power supply.
In the present embodiment, it further includes filter capacitor C3 that the electric energy, which receives circuit 2, in parallel with the battery, for filtering
Except the alternating current in electric current, smoother direct current is obtained as battery charging.
Preferably, the diode D3 is low-power diode, i.e., the power of diode D3 is less than the first rectification member
The power of part and second rectifier cell, it is possible to reduce the energy consumption of auxiliary power supply circuit.
In the present embodiment, the control circuit is configured as that the electric energy is received circuit 2 in a manner of wireless telecommunications
The information such as the voltage and power that receive feedback is to electric energy transmitting circuit, and electric energy transmitting circuit is by adjusting transmitting coil magnetic field
The DC voltage or electric current that power exports after the rectification circuit to control electric energy reception circuit charge the battery.
Preferably, the wireless communication mode can be the wireless communication modes such as bluetooth, WiFi, ZigBee or NB-IoT.
In one embodiment, the diode D1 and D2 in rectification circuit 22 can be replaced with into controllable switch element.Institute
Stating controllable switch element can be using various existing electrically controllable switching device, for example, metal oxide semiconductor field-effect is brilliant
Body pipe (MOSFET), bipolar junction transistor (BJT), alternatively, insulated gate bipolar transistor (IGBT).It is specific as shown in Figure 4.
Fig. 4 is the circuit diagram that the utility model second embodiment electric energy receives circuit.As shown in figure 4, electric energy receives circuit
Including receiving side resonance circuit 21, rectification circuit 22, auxiliary power supply circuit 23 and battery 24.23 quilt of auxiliary power supply circuit
Be configured to be multiplexed the rectification circuit at least one rectifier cell rectified using obtain direct current as control circuit (in figure not
Show) power supply.
Unlike receiving circuit from electric energy shown in Fig. 3, the electric energy of the present embodiment is received in the rectification circuit 22 of circuit
Diode D1 and D2 replace for controllable switch element Q1 and Q2.Wherein, controllable switch element Q1 is connected to receiving side resonance
Between the first end a1 of circuit 21 and the first end b1 of battery, controllable switch element Q2 is connected to the of receiving side resonance circuit 21
Between one end a1 and second end a2.The rectification circuit 22 have a bridge arm midpoint, i.e., first between Q1 and Q2
Bridge arm midpoint d1.
In the present embodiment, control circuit can be received electric energy reception circuit 2 by way of wireless telecommunications
Voltage and the information such as power feedback to electric energy transmitting circuit, electric energy transmitting circuit by adjust the power in transmitting coil magnetic field come
The DC voltage or electric current exported after the rectification circuit of control electric energy reception circuit charges the battery；Alternatively, control circuit can
It is exported after rectification circuit to control electric energy reception circuit by the turn-on and turn-off for controlling controllable switch element Q1 and Q2
DC voltage or electric current charge the battery.
It should be understood that the diode D1 and D2 in rectification circuit 22 be also possible to by it is therein any one replace with and controllably open
Close element.
Preferably, rectification circuit 22 can be the rectification circuit of other forms, such as full bridge rectifier, specific such as Fig. 5
It is shown.
Fig. 5 is the circuit diagram that the utility model 3rd embodiment electric energy receives circuit.As shown in figure 5, electric energy receives circuit
Including receiving side resonance circuit 21, rectification circuit 22, auxiliary power supply circuit 23 and battery 24.23 quilt of auxiliary power supply circuit
Be configured to be multiplexed the rectification circuit at least one rectifier cell rectified using obtain direct current as control circuit (in figure not
Show) power supply.
In the present embodiment, receiving side resonance circuit 21 includes coil L, inductance L1 and capacitor C1.Wherein, inductance L1 and electricity
Hold C1 and forms resonant network.Resonance circuit 21 can incude the alternating magnetic field that the electric energy transmitting circuit generates as a result, to obtain
Corresponding alternating voltage.
In the present embodiment, rectification circuit 22 be full bridge rectifier, including the first rectifier cell, the second rectifier cell,
Third rectifier cell and the 4th rectifier cell.Wherein, first rectifier cell, the second rectifier cell, third rectifier cell
And the 4th rectifier cell be respectively diode D1, D2, D3 and D4.Wherein, diode D1 is connected to the receiving side resonance electricity
Between the first end a1 on road 21 and the first end b1 of battery.Diode D2 is connected to the second end of the receiving side resonance circuit 21
Between a2 and the first end b1 of battery.First end a1 and battery of the diode D3 Opposite direction connection in the receiving side resonance circuit 21
Second end b2 between.Diode D4 Opposite direction connection is in the second end a2 of the receiving side resonance circuit 21 and the second end of battery
Between b2.For the tool of rectification circuit 22 there are two bridge arm midpoint, the first bridge arm midpoint d1 is connected to the receiving side resonance circuit
21 first end a1, between diode D1 and diode D3.Second bridge arm midpoint d2 is connected to the receiving side resonance electricity
The second end a2 on road 21, between the diode D2 and the diode D4.
Specifically, when charging normal, when the first end a1 output of receiving side resonance circuit 21 is forward current, electric current
The first end b1 of battery 24 is flowed to by diode D1, is finally back to reception by diode D4 by the second end b2 of battery 24
The second end a2 of side resonance circuit 21.The closed circuit for flowing through battery 24 is formed at this time, can be charged to battery 24.
When the second end a2 output of receiving side resonance circuit 21 is forward current, electric current flows to the first of battery 24 by diode D2
B1 is held, is finally back to the first end a1 of receiving side resonance circuit 21 by diode D3 by the second end b2 of battery 24.At this time
The closed circuit for flowing through battery 24 is formed, can be charged to battery 24.Rectification circuit 22 may be implemented to dock as a result,
The electric energy received carries out full-bridge rectification to charge to battery 24.
After charging, due to the characteristic of diode unilateral conduction, diode D1 and D2 can prevent the electricity of battery 24
It can flow backward.It can prevent battery power from flowing backward thus, it is possible to not need setting reverse-filling diode, it is possible to reduce charging normal
When reverse-filling diode power consumption.
In the present embodiment, auxiliary power supply circuit 23 is configured as being multiplexed at least one rectification member of the rectification circuit 22
Part, which is rectified, is powered using obtaining direct current as control circuit.Specifically, auxiliary power supply circuit 23 includes the 5th rectifier cell, the
Six rectifier cells, capacitor C2 and DC-DC converter 23a.Wherein, the 5th rectifier cell and the 6th rectifier cell
For diode D5 and D6.The diode D5 is connected to the second end of the first bridge arm midpoint d1 Yu the receiving side resonance circuit 21
Between a2, the diode D6 is connected between the second bridge arm midpoint d2 and the second end a2 of the receiving side resonance circuit 21,
The diode D3 and D4 for being multiplexed the rectification circuit 22 form full-bridge rectification and are powered using obtaining direct current as control circuit.
Preferably, the diode D5 and D6 is low-power diode, i.e. the power of diode D5 and D6 is whole less than first
Fluid element, the second rectifier cell, third rectifier cell and the 4th rectifier cell power, circuit design can be reduced in this way
Cost reduces the energy consumption of auxiliary power supply circuit.
Specifically, receiving side resonance circuit 21 first end a1 output be forward current when, electric current by diode D5,
D4 is back to the second end a2 of receiving side resonance circuit 21.The closed circuit for flowing through auxiliary power supply circuit 23 is formed at this time,
The available electric energy of auxiliary power supply circuit 23 powers to control circuit.It is positive in the second end a2 output of receiving side resonance circuit 21
When to electric current, circuit is back to the first end a1 of receiving side resonance circuit 21 by diode D6, D3, at this point, auxiliary power supply is electric
Road 23 does not obtain electric energy, does not need to power to control circuit.Auxiliary power supply circuit 23 can be by way of full-bridge rectification as a result,
Electric energy is obtained to power to control circuit.
In the present embodiment, capacitor C2 is filter capacitor, for filtering out the alternating current in electric current, is obtained smoother straight
Galvanic electricity.
In the present embodiment, the control circuit is configured as that the electric energy is received circuit 2 in a manner of wireless telecommunications
The information such as the voltage and power that receive feedback is to electric energy transmitting circuit, and electric energy transmitting circuit is by adjusting transmitting coil magnetic field
The DC voltage or electric current that power exports after the rectification circuit to control electric energy reception circuit charge the battery.
In the present embodiment, it further includes filter capacitor C3 that the electric energy, which receives circuit 2, in parallel with the battery 24, is used for
The alternating current in electric current is filtered out, obtains smoother direct current as the battery 24 charging.
In one embodiment, diode D1, D2, D3 and D4 in Fig. 5 in rectification circuit 22 can be replaced with controllably
Switch element.The controllable switch element can use various existing electrically controllable switching devices, for example, metal oxide is partly led
Body field effect transistor (MOSFET), bipolar junction transistor (BJT), alternatively, insulated gate bipolar transistor (IGBT).Specifically such as
Shown in Fig. 6.
Fig. 6 is the circuit diagram that the utility model fourth embodiment electric energy receives circuit.As shown in fig. 6, electric energy receives circuit
Including coil L, rectification circuit 22, auxiliary power supply circuit 23 and battery 24.The auxiliary power supply circuit 23 is configured as being multiplexed
At least one rectifier cell of the rectification circuit, which is rectified, is powered using obtaining direct current as control circuit (not shown).
Unlike receiving circuit from electric energy shown in fig. 5, the electric energy of the present embodiment is received in the rectification circuit 22 of circuit
Diode D1, D2, D3 and D4 replace for controllable switch element Q1, Q2, Q3 and Q4.Specifically, rectification circuit 22 is full-bridge
Rectification circuit, including controllable switch element Q1, Q2, Q3 and Q4.Wherein, controllable switch element Q1 is connected to the receiving side resonance
Between the first end a1 of circuit 21 and the first end b1 of battery.Controllable switch element Q2 is connected to the receiving side resonance circuit 21
Second end a2 and battery first end b1 between.Controllable switch element Q3 is connected to the first of the receiving side resonance circuit 21
It holds between the a1 and second end b2 of battery.Controllable switch element Q4 be connected to the second end a2 of the receiving side resonance circuit 21 with
Between the second end b2 of battery.For the tool of rectification circuit 22 there are two bridge arm midpoint, the first bridge arm midpoint d1 is connected to described connect
The first end a1 for receiving side resonance circuit 21, between controllable switch element Q1 and Q3.Second bridge arm midpoint d2 is connected to described
The second end a2 of receiving side resonance circuit 21, between the controllable switch element Q2 and Q4.
In the present embodiment, control circuit can be received electric energy reception circuit 2 by way of wireless telecommunications
Voltage and the information such as power feedback to electric energy transmitting circuit, electric energy transmitting circuit by adjust the power in transmitting coil magnetic field come
The DC voltage or electric current exported after the rectification circuit of control electric energy reception circuit charges the battery；Alternatively, control circuit can
After controlling the rectification circuit that electric energy receives circuit by the turn-on and turn-off for controlling controllable switch element Q1, Q2, Q3 and Q4
The DC voltage or electric current of output charge the battery.
It should be understood that diode D1, D2, D3 and D4 in rectification circuit 22 be also possible to by it is therein any one replace with
Controllable switch element.
The bridge arm midpoint that the present embodiment is connected to rectification circuit by the way that at least one rectifier cell is arranged forms auxiliary power supply
Circuit, at least one rectifier cell of the auxiliary power supply circuit multiplexer rectification circuit are rectified to obtain direct current as control
Circuit power supply.Not needing setting reverse-filling diode as a result, can prevent battery power from flowing backward, and can save when charging normal
The electric energy loss of reverse-filling diode.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, for this field
For technical staff, the utility model can have various modifications and changes.All institutes within the spirit and principle of the utility model
Any modification, equivalent substitution, improvement and etc. of work, should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of electric energy receives circuit, which is characterized in that the electric energy receives circuit and includes:
Receiving side resonance circuit；
There is rectification circuit at least one bridge arm midpoint to be connected to the receiving side resonance circuit；
Control circuit；And
Auxiliary power supply circuit is connected at least one described bridge arm midpoint, is configured as be multiplexed the rectification circuit at least one
A rectifier cell is rectified to obtain direct current as control circuit power supply.
2. electric energy according to claim 1 receives circuit, which is characterized in that the rectification circuit includes:
First rectifier cell is connected between the first end of the receiving side resonance circuit and the first end of battery；
Second rectifier cell is connected between the first end and second end of the receiving side resonance circuit；And
First bridge arm midpoint is connected to the first end of the receiving side resonance circuit, be located at first rectifier cell with it is described
Between second rectifier cell.
3. electric energy according to claim 2 receives circuit, which is characterized in that the auxiliary power supply circuit includes:
Third rectifier cell is connected between first bridge arm midpoint and the second end of the receiving side resonance circuit；
It is described that the second rectifier cell that the third rectifier cell is multiplexed the rectification circuit, which is rectified to obtain direct current,
Control circuit power supply.
4. electric energy according to claim 2 receives circuit, which is characterized in that first rectifier cell and described second whole
Fluid element is diode or controlled switching element.
5. electric energy according to claim 3 receives circuit, which is characterized in that the third rectifier cell is diode, and
The diode power of the third rectifier cell is less than the power of first rectifier cell and second rectifier cell.
6. electric energy according to claim 1 receives circuit, which is characterized in that the rectification circuit includes:
First rectifier cell is connected between the first end of the receiving side resonance circuit and the first end of battery；
Second rectifier cell is connected between the second end of the receiving side resonance circuit and the first end of battery；
Third rectifier cell is connected between the first end of the receiving side resonance circuit and the second end of battery；
4th rectifier cell is connected between the second end of the receiving side resonance circuit and the second end of battery；
First bridge arm midpoint is connected to the first end of the receiving side resonance circuit, be located at first rectifier cell with it is described
Between third rectifier cell；And
Second bridge arm midpoint is connected to the second end of the receiving side resonance circuit, be located at second rectifier cell with it is described
Between 4th rectifier cell.
7. electric energy according to claim 6 receives circuit, which is characterized in that the auxiliary power supply circuit includes:
5th rectifier cell is connected between first bridge arm midpoint and the second end of battery；And
6th rectifier cell is connected between second bridge arm midpoint and the second end of battery；
5th rectifier cell and the 6th rectifier cell are multiplexed the third rectifier cell of the rectification circuit and the 4th whole
Fluid element is rectified to obtain direct current as control circuit power supply.
8. electric energy according to claim 6 receives circuit, which is characterized in that first rectifier cell, described second whole
Fluid element, the third rectifier cell and the 4th rectifier cell are diode or controlled switching element.
9. electric energy according to claim 7 receives circuit, which is characterized in that the 5th rectifier cell and described 6th whole
Fluid element is diode, and the power of the diode of the 5th rectifier cell and the 6th rectifier cell is less than described first
Rectifier cell, second rectifier cell, the third rectifier cell and the 4th rectifier cell power.
10. a kind of wireless charging system, which is characterized in that the system comprises:
Electric energy transmitting circuit is configured as transmitting electric energy；And
Electric energy as claimed in any one of claims 1-9 wherein receives circuit, is configured as receiving the electric energy transmitting circuit transmitting
Electric energy be battery charging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920285490.2U CN209516747U (en) | 2019-03-06 | 2019-03-06 | Electric energy receives circuit and wireless charging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920285490.2U CN209516747U (en) | 2019-03-06 | 2019-03-06 | Electric energy receives circuit and wireless charging system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209516747U true CN209516747U (en) | 2019-10-18 |
Family
ID=68205035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920285490.2U Active CN209516747U (en) | 2019-03-06 | 2019-03-06 | Electric energy receives circuit and wireless charging system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209516747U (en) |
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2019
- 2019-03-06 CN CN201920285490.2U patent/CN209516747U/en active Active
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