CN105305520B - Charging circuit and electric vehicle - Google Patents
Charging circuit and electric vehicle Download PDFInfo
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- CN105305520B CN105305520B CN201410369772.2A CN201410369772A CN105305520B CN 105305520 B CN105305520 B CN 105305520B CN 201410369772 A CN201410369772 A CN 201410369772A CN 105305520 B CN105305520 B CN 105305520B
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention is suitable for electric automobiles, provides charging circuit and electric vehicle；The charging circuit includes RF receiving circuit, control module, discharge switching circuit；The RF receiving circuit receives the first radiofrequency signal sent by the charger during charger charges to battery by antenna, discharge instruction signal is demodulated from first radiofrequency signal, and exports the discharge instruction signal to the control module；The control module generates electric discharge instruction when detecting the discharge instruction signal, and exports the electric discharge instruction to the discharge switching circuit；The discharge switching circuit is detecting the discharge loop that the battery is connected to load when the electric discharge instruction.By the way that during charger charges to battery, at intervals to battery discharge, realization repairs battery while charging to battery.
Description
Technical field
The invention belongs to electric automobiles more particularly to charging circuits and electric vehicle.
Background technology
Electric vehicle, including electric bicycle, battery-operated motor cycle and electric unicycle；Since it is not suitable for fuel, using can
The battery of charging is realized Green Travel, is more had been favored by people as drive energy.Before using electric vehicle, all need
It to charge to battery, wait for, full of after enough electricity, to go on a journey.
The electric vehicle that the prior art provides is required for using battery；The service life of battery is limited, and with using
Number increases, and battery performance can continuously decrease until failure.
Invention content
It is right with while to the battery charging of electric vehicle the purpose of the present invention is to provide charging circuit and electric vehicle
The battery carries out battery reparation.
On the one hand, the present invention provides a kind of charging circuit；The charging circuit include RF receiving circuit, control module,
Discharge switching circuit；The control module is electrically connected with the RF receiving circuit and the discharge switching circuit respectively；
The RF receiving circuit, for being received by the charging by antenna during charger charges to battery
The first radiofrequency signal that device is sent, demodulates discharge instruction signal from first radiofrequency signal, and to the control module
Export the discharge instruction signal；
The control module, for generating electric discharge instruction when detecting the discharge instruction signal, and to the electric discharge
Switching circuit exports the electric discharge instruction；
The discharge switching circuit, for detecting that the battery is connected when the electric discharge instruction returns the electric discharge of load
Road.
On the one hand, the present invention provides a kind of electric vehicle, and the electric vehicle includes above-mentioned charging circuit.
Beneficial effects of the present invention：During charger charges to the battery of electric vehicle, charger can be between battery
The electric signal of high potential and the electric signal of low potential are exported every property；In charger to the of short duration phase of the electric signal of battery low potential
Between, charger sends the first radiofrequency signal for carrying discharge instruction signal by its radio-frequency module to electric vehicle；In electric vehicle
Receiver Module can demodulate discharge instruction signal from first radiofrequency signal and be exported to control module, and then control mould
Block be engraved in this it is of short duration during control the discharge switching circuit battery is connected to load discharge loop, to battery discharge.It is logical
It crosses during charger charges to battery, at intervals to battery discharge, realizes while charging to battery to battery
It is repaired.
Description of the drawings
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description be only the present invention some
Embodiment for those of ordinary skill in the art without having to pay creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is the composite structural diagram of charging circuit provided in an embodiment of the present invention；
Fig. 2 is a kind of composite structural diagram of charging circuit provided in an embodiment of the present invention；
Fig. 3 is the physical circuit figure of switching circuit of power supply 1；
Fig. 4 is a kind of optimization composite structural diagram of charging circuit provided in an embodiment of the present invention；
Fig. 5 is a kind of physical circuit figure of delay circuit 46；
Fig. 6 is another optimization composite structural diagram of charging circuit provided in an embodiment of the present invention；
Fig. 7 is the physical circuit figure of starting switch circuit 3.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.In order to illustrate technical solutions according to the invention, illustrated below by specific embodiment.
Fig. 1 shows the composed structure of charging circuit provided in an embodiment of the present invention, for ease of description, illustrate only with
The relevant part of the embodiment of the present invention.
Charging circuit provided in an embodiment of the present invention, as described in Figure 1, the charging circuit include RF receiving circuit 4, control
Molding block 2, discharge switching circuit 5；The control module 2 respectively with the RF receiving circuit 4 and the discharge switching circuit 5
Electrical connection.
In embodiments of the present invention, it includes antenna that charger, which has radio-frequency module, the RF receiving circuit 4,；The charging
When device sends radiofrequency signal by its radio-frequency module, the RF receiving circuit 4 in electric vehicle can be believed the radio frequency by its antenna
It number is coupled to receive.During charger charges to the battery of electric vehicle, the charger electricity exported to battery charging
Signal is made of the electric signal of high potential and the signal of low potential；If the electric signal that charger is exported to battery is low electricity
Position, it represents and does not charge to battery；In embodiments of the present invention, in order to while charging to battery, battery is carried out to battery
It repairs, the charger is in charging process, and while the electric signal of the low potential exported to battery, which is penetrated by it
Frequency module sends the first radiofrequency signal for carrying discharge instruction signal to electric vehicle.
Referring to Fig. 1, for the RF receiving circuit 4 that the charging circuit includes, the RF receiving circuit 4 is used for：
The first radiofrequency signal that charger is sent by antenna reception by the charger during charging to battery, from described first
Discharge instruction signal is demodulated in radiofrequency signal, and exports the discharge instruction signal to the control module 2.
In the present embodiment, the RF receiving circuit 4 can solve the first radiofrequency signal received by antenna
It adjusts, discharge instruction signal is demodulated from the first radiofrequency signal for carrying discharge instruction signal.A preferred implementation as demodulation
Mode, the RF receiving circuit 4 carry out centered on carrier frequency the first radiofrequency signal received by antenna successively
Frequency carries out bandpass filtering, signal amplification, the carrier wave demodulation of removal carrier wave, signal demodulation, signal adjustment, obtains electric discharge instruction letter
Number.
Referring to Fig. 1, for the control module 2 that the charging circuit includes, the control module 2 is used for：Detecting
Electric discharge instruction is generated when stating discharge instruction signal, and exports the electric discharge instruction to the discharge switching circuit 5.
In embodiments of the present invention, during charging to battery, can intermittently stop to battery charging (charger
The electric signal of the low potential intermittently exported to battery)；In the electric signal of low potential that charger starts to export to battery
Meanwhile the charger can also send the first radiofrequency signal for carrying discharge instruction signal to electric vehicle；In turn, stopping to right
The tempus intercalare of battery charging, control module 2 can receive the discharge instruction signal of the output of RF receiving circuit 4；Control module 2
Electric discharge instruction can be generated in time when detecting the discharge instruction signal, the electric discharge instruction is exported to discharge switching circuit 5, with
So that the battery is connected to the discharge loop of load discharge in discharge switching circuit 5 in time, discharge battery.
Referring to Fig. 1, for the discharge switching circuit 5 that the charging circuit includes, the discharge switching circuit 5 is used for：
Detect the discharge loop that the battery is connected to load when the electric discharge instruction.
In embodiments of the present invention, discharge switching circuit 5 is electrically connected with control module 2, and discharge switching circuit 5 is being examined
Electric discharge instruction is measured, timely turn-on battery is to the discharge loop of load discharge, to battery discharge.As a specific implementation mode,
There is discharge switching circuit 5 multiple switch module, each external different loads of switch module, the charging circuit to put detecting
When electricity instruction, the specified one or more switch modules of the electric discharge instruction are pointedly connected, and then pass through specified switch
Module pointedly selects load blocks, by the load blocks of selection to battery discharge.Therefore, if different loads module institute
The electric current needed is different, and the mode of given load module can be instructed according to the electric discharge, realizes the electric discharge of different electric currents.
So in embodiments of the present invention, since during charger charges the battery, charger can be to electricity
Export to cell compartment the electric signal of high potential and the electric signal of low potential；It is charged to battery by the electric signal of the high potential；
In electric signal of the charger to battery low potential, represents and do not charge to battery.In charger not to the of short duration phase of battery charging
Between (i.e. charger continues the electric signal to battery low potential in the of short duration period), charger is by its radio-frequency module to electric vehicle
Send the first radiofrequency signal for carrying discharge instruction signal；Accordingly, the Receiver Module in electric vehicle first can be penetrated from this
Demodulated in frequency signal discharge instruction signal and to control module 2 export, and then control module 2 be engraved in this it is of short duration during control
Discharge loop of the battery to load is connected in discharge switching circuit 5, to battery discharge.Pass through what is charged to battery in charger
In the process, at intervals to battery discharge, realization repairs battery while charging to battery.
As a preferred embodiment, the discharge switching circuit 5 includes metal-oxide-semiconductor；The discharge switching circuit 5 is specifically used
In：The metal-oxide-semiconductor is connected when the electric discharge instructs, with the battery by the metal-oxide-semiconductor of conducting to the load discharge.
In the preferred embodiment, it since metal-oxide-semiconductor has low-power and can bear the characteristic of larger current, is putting
It is added to metal-oxide-semiconductor in electric switch circuit 5, controlling discharge loop by the metal-oxide-semiconductor of addition, (battery returns the electric discharge of load discharge
Road) on or off.
Fig. 2 shows a kind of composed structures of charging circuit provided in an embodiment of the present invention only to show for ease of description
With relevant part of the embodiment of the present invention.
As a preferred embodiment of the present invention, as described in Figure 2, the charging circuit further includes the switching circuit of power supply；
There is the switching circuit of power supply the first controlled end, the second controlled end and feeder ear, the control module 2 to have power end and guarantor
Hold end；The described first controlled termination RF receiving circuit 4 of the switching circuit of power supply, the institute of the switching circuit of power supply
It states the second controlled end and feeder ear correspondence connects the holding end of the control module 2 and the power end.The radio frequency
Receiving circuit 4 is additionally operable to：It is received by the antenna match when the charger starts to charge to the battery and is filled by described
The second radiofrequency signal that electric appliance is sent, demodulates power supply signal, to the switching circuit of power supply from second radiofrequency signal
Export the power supply signal.The switching circuit of power supply is used for：The power supply signal is being received from first controlled end
During from the feeder ear export first power supply signal, be additionally operable to receive from second controlled end when keeping signal
The second source signal is exported from the feeder ear.The control module 2 is additionally operable to：First is being detected from the power end
The holding signal is generated when power supply signal, and the holding signal is exported from the holding end to the charging circuit.
In embodiments of the present invention, wireless connection has been established between the charging circuit and charger；The charging
When device starts to charge to the battery, charger can send the second radiofrequency signal, electric vehicle by the radio-frequency module to electric vehicle
Second radiofrequency signal can be coupled to receive by the RF receiving circuit 4 in charging circuit.
As one specific implementation mode of the embodiment of the present invention, after charger is electrically connected with electric vehicle, pass through the charging
Device charges to the battery of electric vehicle.While starting to charge to the battery, radio-frequency module which has by it to
Charging circuit sends out the second radiofrequency signal.The charging circuit couples second radiofrequency signal by RF receiving circuit 4
It receives.In this way, charger can carry data by second radiofrequency signal, the RF receiving circuit 4 of electric vehicle can from this second
The data that carrying is demodulated in radiofrequency signal receive the data by control module 2；Control module 2 can execute phase according to the data
It should act.
It is worth noting that for the RF receiving circuit 4 that the charging circuit includes, the RF receiving circuit 4
With the second radiofrequency signal for receiving charger transmission, power supply signal is demodulated from second radiofrequency signal, to the power supply
Switching circuit 1 exports the power supply signal.It is used it should be noted that the radio-frequency module in charger sends the second radiofrequency signal
Modulation system (including modulating frequency) and the charging circuit include RF receiving circuit 4 used in demodulation mode (packet
Include frequency, demodulation frequency, which is identical with modulating frequency used in the radio-frequency module in charger) when matching it is corresponding
's.In this way, RF receiving circuit 4 can carry out relatively high power to the second radiofrequency signal that the radio-frequency module in charger is sent
It is coupled to receive.
Specifically in embodiments of the present invention, after device to be charged is electrically connected with electric vehicle, by the charger to electric vehicle
Battery charging when, charger can be sent to electric vehicle by its radio-frequency module and carry the second radiofrequency signal of power supply signal.
Electric vehicle receives second radiofrequency signal by its RF receiving circuit 4, and is demodulated for telecommunications from second radiofrequency signal
Number；The RF receiving circuit 4 exports the power supply signal simultaneously to control module 2 and switching circuit of power supply 1.At this moment, if control
Module 2 does not work on power, cannot receive the power supply signal；For the charging process in charger to the battery of electric vehicle
In, control module 2 is capable of the data (such as charger detect battery capacity) that real-time reception charger is sent, and need to start
Control module 2 is worked on power in time when charging to battery.
In turn, the embodiment of the present invention is added to switching circuit of power supply 1 in electric vehicle, and the switching circuit of power supply 1 has
First controlled end CTL1, the first controlled end CTL1 connects the RF receiving circuit 4.The switching circuit of power supply 1 is from first
Controlled end CTL1 is received and is exported first power supply signal from the feeder ear P in a period of the power supply signal.
Specifically in example in real time of the invention, the switching circuit of power supply 1 is defeated to RF receiving circuit 4 from the first controlled end CTL1
The power supply signal gone out is received, and constant conduction battery is to control module 2 within the period for persistently receiving the power supply signal
Power supply, by the battery to the control module 2 power；I.e. during charging to battery by charger, there is the confession
Electric signal triggers the powering on to the control module 2 of switching circuit of power supply 1, and control module 2 after the power is turned on can receive radio frequency
Receiving circuit 4 export data (such as：Electricity is acquired by charger, receiving the charger by the RF receiving circuit 4 sends
The electricity).But should be noted that, duration of the power supply signal parsed due to RF receiving circuit 4 be it is limited, into
And the first power supply signal exported by power supply signal triggering switching circuit of power supply 1, the duration of first power supply signal
It is limited.
It is worth noting that for the whole process that guarantee monitoring charger charges to battery, it need to ensure that the control module 2 is held
It is continuous to work on power；Therefore in embodiments of the present invention, the control module 2 also have power end and keep end, the power end and
The holding end is electrically connected with the charging circuit respectively；The control module 2 is detecting the charging from the power end
It is generated when the first power supply signal of circuit output and keeps signal, the holding letter is exported from the holding end to the charging circuit
Number.
In embodiments of the present invention, even if the duration of first power supply signal is also limited, pass through first electricity
After source signal starts control module 2, control module 2 after the power is turned on remains able to detect that switching circuit of power supply 1 exports the
One power supply signal.Before or while RF receiving circuit 4 stops exporting power supply signal to switching circuit of power supply 1, control module 2
It need to be exported to switching circuit of power supply 1 and keep signal, and continued output and keep signal.
It is worth noting that for the switching circuit of power supply 1, Fig. 2 is participated in, the switching circuit of power supply 1 also has the
Two controlled end CTL2 and feeder ear P, the second controlled end CTL2 and the feeder ear P correspond to the guarantor for connecing the control module 2
Hold end and power end.In embodiments of the present invention, the switching circuit of power supply 1 is receiving the confession from the first controlled end CTL1
First power supply signal is exported from the feeder ear P in a period of electric signal, is then received from the second controlled end CTL2
To when the holding signal second source signal is exported from the feeder ear P.
It should be noted that the first power supply signal and second source signal can be identical or different power supply signal.As one
Specific implementation mode, the electric current of first power supply signal are less than the electric current of the second source signal；Switching circuit of power supply 1 exists
First power supply signal is exported to control module 2 during detecting power supply signal, only tentatively starts the part of control module 2
Function (including the first power supply signal of detection and generate keep signal this function), and then the output of switching circuit to be powered 1 second
When power supply signal powers to control module 2, control module 2 enables other functions.
Specifically in embodiments of the present invention, the feeder ear P and the power end of control module 2 of the switching circuit of power supply 1 are
Electrical connection, the switching circuit of power supply 1 can export the first power supply signal by its feeder ear P to the power end of control module 2
With second source signal.In addition, the second controlled end CTL2 of the switching circuit of power supply 1 and the holding end of control module 2 are electricity
Connection, the switching circuit of power supply 1 can detect the holding letter that control module 2 exports by its second controlled end CTL2
Number.
In turn, before or while RF receiving circuit 4 stops exporting power supply signal to switching circuit of power supply 1, the confession
Electric switch circuit 1 can detect that the holding signal that control module 2 exports, the switching circuit of power supply 1 are detecting holding letter
Number when from the feeder ear P export the second source signal；Until holding letter is not detected in the switching circuit of power supply 1
Number, the switching circuit of power supply 1 stops power supply of the battery to the control module 2.
As a specific implementation mode, after module 2 to be controlled works on power, control module 2 connects from RF receiving circuit 4
The electricity (electricity that charger detects battery progress electric power detection in charging) that charger is sent is received, is controlled simultaneously
Module 2 also voluntarily detects the electricity of battery；Control module 2 is compared the electricity detected with the electricity that charger is sent,
Determined whether to disconnect charging of the charger to battery according to comparison result；Such as：When charger simultaneously charges to multiple batteries,
If one or more battery has been filled with, and exists simultaneously one or more battery underfill, then charger is sent out to control module 2
(battery capacity that i.e. charger detects is the electricity sent：The electricity average value for all batteries that charger charges simultaneously) it can be small
In control module 2 directly to have been filled with battery detecting when detected electricity, therefore, control module 2 will disconnect to having filled
The charge circuit of full battery charging is held on the charge circuit of the battery charging of underfill.
Fig. 3 shows that the physical circuit of switching circuit of power supply 1 provided in an embodiment of the present invention only shows for ease of description
Go out and the relevant part of the embodiment of the present invention.
As a preferred embodiment of the present invention, as shown in figure 3, the switching circuit of power supply 1 includes：Battery, the one or two pole
Pipe D1, the second diode D2, third diode D3, first resistor R1, second resistance R2,3rd resistor R3, first switch pipe 11
With second switch pipe 12；
The anode of the first diode D1 is the first controlled end CTL1 of the switching circuit of power supply 1, the described 2nd 2
The anode of pole pipe D2 is the second controlled end CTL2 of the switching circuit of power supply 1, the cathode of the first diode D1 and described
The cathode of second diode D2 connects the first end of the first resistor R1, the control terminal of the first switch pipe 11, high potential
The end second end for meeting the first resistor R1 corresponding with cold end, the second end and ground of the second resistance R2, described second
The control terminal of switching tube 12, hot end and cold end correspond to the first end for meeting the second resistance R2, the battery and the
The first end and second end correspondence of the anode of three diode D3, the 3rd resistor R3 connects the battery and the second resistance R2
First end, the cathode of the third diode D3 is the feeder ear P of the switching circuit of power supply 1.
In the preferred embodiment, when charger starts the battery charging to electric vehicle, charger can pass through its radio frequency mould
Block sends the second radiofrequency signal for carrying power supply signal.The RF receiving circuit 4 of charging circuit is to second radio frequency in electric vehicle
Signal is coupled to receive, and the power supply signal of high potential is demodulated from the second radiofrequency signal being coupled to receive；Radio frequency reception
Circuit 4 exports the power supply signal demodulated to switching circuit of power supply 1.
And then the switching circuit of power supply 1 receives the power supply signal of the high potential from the first controlled end CTL1；High potential
Power supply signal first switch pipe 11 can be connected, the second end of second resistance R2 is pulled down to low potential (being equivalent to ground connection), after
And second switch pipe 12 is also switched on, the battery hot end Jing Guo second switch pipe 12 and cold end, third diode successively
D3 exports the first power supply signal from feeder ear P；By first power supply signal, module 2 is powered in order to control, starts control module 2.
And then the control module 2 to work on power can detect power end (the feeder ear P of the power end and switching circuit of power supply 1
Electrical connection), detect whether that there are the first power supply signals；And then control module 2 is when detecting first power supply signal, it is raw in time
At holding signal, and from holding end the holding signal is exported to the second controlled end CTL2 of switching circuit of power supply 1.
Since the switching circuit of power supply 1 is in a period of persistently receiving the power supply signal, can continue to control mould
Block 2 exports first power supply signal；To avoid causing because of the interruption of the power supply signal stopping exporting institute to control module 2
State the first power supply signal；To which before terminating during the power supply signal, switching circuit of power supply 1 need to be from the second controlled end
CTL2 receives holding signal, continues that first switch pipe 11 is connected by the holding signal, and then second switch pipe 12 is connected,
It keeps keeping power supply of the battery to control module 2 in the duration of signal；Accordingly even when described for telecommunications stopping receiving
After number, switching circuit of power supply 1 can persistently receive the holding signal that control module 2 exports from the second controlled end CTL2, continue
It powers from feeder ear P to control module 2, forms closed-loop control.When control module 2 wishes to be stopped, can stop from holding
It holds the second controlled end CTL2 outputs to switching circuit of power supply 1 to keep signal, disconnects power supply of the battery to control module 2.
As a specific implementation mode of this preferred embodiment, the first switch pipe 11 is NPN type triode Q1；It is described
The base stage of NPN type triode Q1, collector and emitter correspond to the control terminal of the first switch pipe 11, hot end and low
Potential end.
As a specific implementation mode of this preferred embodiment, the first switch pipe 11 is N-type metal-oxide-semiconductor, the N-type
Grid, drain electrode and the source electrode of metal-oxide-semiconductor correspond to control terminal, hot end and the cold end of the first switch pipe 11.
As a specific implementation mode of this preferred embodiment, the second switch pipe 12 is PNP type triode Q2；It is described
The base stage of PNP type triode Q2, collector and emitter correspond to the control terminal of the first switch pipe 11, hot end and low
Potential end.
As a specific implementation mode of this preferred embodiment, the first switch pipe 11 is p-type metal-oxide-semiconductor, the p-type
Grid, drain electrode and the source electrode of metal-oxide-semiconductor correspond to control terminal, hot end and the cold end of the first switch pipe 11.
Fig. 4 shows a kind of optimization composed structure of charging circuit provided in an embodiment of the present invention, for ease of description, only
It shows and the relevant part of the embodiment of the present invention.
As another preferred embodiment of the present invention, as shown in figure 4, the RF receiving circuit 4 includes radio demodulating circuit
With delay circuit 46；The delay circuit 46 be serially connected in the first of the radio demodulating circuit and the switching circuit of power supply 1 by
Between control end CTL1.
In the preferred embodiment, when charger starts the battery charging to electric vehicle, charger can pass through its radio frequency mould
Block sends the second radiofrequency signal for carrying power supply signal.The RF receiving circuit 4 of charging circuit is to second radio frequency in electric vehicle
Signal is coupled to receive, and the power supply signal of high potential is demodulated from the second radiofrequency signal being coupled to receive；But if
The duration of the power supply signal is shorter, and control module 2 could not complete to power within the duration of power supply signal, from power end
It detects the first power supply signal and generates holding signal, and then switching circuit of power supply 1 can not be within the duration of power supply signal
The holding signal of the feedback of control module 2 is received, battery can not be controlled by the holding signal and continues to power to control module 2.
To solve the problems, such as this, time delay module is added in the RF receiving circuit 4.
In this preferred implementation, the radio demodulating Circuit Matching receives the second radiofrequency signal that charger is sent, from institute
It states in the second radiofrequency signal and demodulates power supply signal.
After waiting for that the radio demodulating circuit completes demodulation and exports power supply signal, which is extended by the delay circuit 46
The duration of electric signal.Specifically, the delay circuit 46 extends the duration of the power supply signal demodulated, to the confession
First controlled end CTL1 of electric switch circuit 1 exports extended power supply signal.It should be noted that being established by cable to confession for delay circuit
The extended power supply signal that powered-down road 1 exports, within the duration of the extended power supply signal, 1 energy of switching circuit of power supply
The holding signal of the feedback of control module 2 is enough received, and then before the duration of power supply signal terminates, high electricity can be passed through
Holding signal conduction first switch pipe 11, the second switch pipe 12 of position, battery can be by the second switch pipes 12 of conducting to control
Module 2 is powered；And then after the duration of power supply signal terminates, the holding signal conduction first for continuing through high potential is opened
Pipe 11, second switch pipe 12 are closed, power supply of the battery by the second switch pipe 12 of conducting to control module 2 is kept.
It should be noted that delay circuit 46, the duration of high level is maintained for extending power supply signal；Therefore, only
Want can to realize the circuit of 46 function of above-mentioned delay circuit, such as integrator delay-time circuit 46.
Fig. 5 shows a kind of physical circuit of delay circuit 46, for ease of description, illustrates only and the embodiment of the present invention
Relevant part.
As a specific implementation mode of this preferred embodiment, as shown in figure 5, the delay circuit 46 includes the 11st electricity
Hold C11, eleventh resistor R11, twelfth resistor R12, thirteenth resistor R13, the 14th resistance R14, comparison amplifier U1 and
Reference power supply VCC1；
The first end of the eleventh resistor R11 is node R _ D；The first end and second end of the eleventh resistor R11
The corresponding normal phase input end for connecing the radio demodulating circuit and the comparison amplifier U1, the first of the 11st capacitance C11
The corresponding with second end normal phase input end and ground for meeting the comparison amplifier U1 in end, the first end of the twelfth resistor R12 with
Second end corresponds to the inverting input for meeting the reference power supply VCC1 and the comparison amplifier U1, the thirteenth resistor R13
First end and second end correspond to and connect the inverting input and ground of the comparison amplifier U1, the of the 14th resistance R14
One end and second end correspond to the first controlled end of the output end and the switching circuit of power supply 1 that meet the comparison amplifier U1
CTL1。
In this embodiment, the delay circuit 46 is in the power supply for receiving the radio demodulating circuit and demodulating
After signal, by the RC delay circuits 46 of the 11st capacitance C11 and eleventh resistor R11 compositions, extend the upper of power supply signal
Edge is risen, and then extends the duration of high potential in power supply signal.And then it is delayed by RC by comparing amplifier U1 corrections
After waveform after circuit, comparison amplifier U1 can export extended power supply signal.It is defeated relative to the radio demodulating circuit
The power supply signal gone out, the extended power supply signal have the longer high potential duration.
Fig. 6 shows another optimization composed structure of charging circuit provided in an embodiment of the present invention, for ease of description,
It illustrates only and the relevant part of the embodiment of the present invention.
In another preferred embodiment of the present invention, as shown in fig. 6, the charging circuit further includes starting switch circuit 3；Institute
Stating starting switch circuit 3 has switch terminals and output end, and the external electric door lock of switch terminals, the output termination is described to be supplied to establish by cable
The first controlled end CTL1 on powered-down road 1；The starting switch circuit 3 detects opening for the electric door lock output from the switch terminals
When dynamic signal, the ON signal of low potential is exported from the output end.
In the preferred embodiment, when driver does not start electric vehicle by electric door lock, which will not export startup
Signal, the starting switch circuit 3 keep not exporting the ON signal of low potential from output end.The output of the starting switch circuit 3
End is electrically connected with the first controlled end CTL1 of the switching circuit of power supply 1.At this time if, switching circuit of power supply 1 from first by
Control end CTL1 receives the power supply signal of high potential, and first switch pipe 11 can be connected, and second switch pipe 12 is then connected with battery
It powers to control module 2.
But after driver starts electric vehicle by electric door lock, which can export enabling signal, and the startup is opened
Powered-down road 3 can export the ON signal of low potential from output end.Even if switching circuit of power supply 1 receives height from the first controlled end CTL1
When the power supply signal of current potential, the OFF signal of the low potential can also end first switch pipe 11, and then second switch pipe 12 is also cut
Only, battery cannot power to control module 2 by second switch pipe 12.
Fig. 7 shows the physical circuit of starting switch circuit 3, for ease of description, illustrates only and the embodiment of the present invention
Relevant part.
As an embodiment of this preferred embodiment, as shown in fig. 7, the starting switch circuit 3 includes the 31st
Resistance R31 and third switching tube 31；
The first end of the 31st resistance R31 is the switch terminals of the starting switch circuit 3, the third switching tube
31 hot end is the output end of the starting switch circuit 3；The control terminal and cold end pair of the third switching tube 31
The second end and ground of the 31st resistance R31 should be connect.
In the present embodiment, when driver closes electric door lock, the switch terminals of the starting switch circuit 3 are hanging, third
Switching tube 31 ends, and the starting switch circuit 3 will not export the ON signal of low potential from output end.
However when driver opens electric door lock, the startup letter of the switch terminals access high potential of the starting switch circuit 3
Number, third switching tube 31 is connected, and the starting switch circuit 3 exports the ON signal of low potential from output end.Starting switch electricity
The output end on road 3 is electrically connected with the first controlled end CTL1 of the switching circuit of power supply 1, even if in switching circuit of power supply 1 from
When one controlled end CTL1 receives the power supply signal of high potential, the ON signal of the low potential can also end first switch pipe 11,
The first switch pipe 11 of cut-off can also end second switch pipe 12, stop battery and power to control module 2.
As a preferred embodiment, the third switching tube 31 is NPN type triode；The base of the NPN type triode
Pole, collector and emitter correspond to control terminal, hot end and the cold end of the third switching tube 31；
Or the third switching tube 31 is N-type metal-oxide-semiconductor, grid, drain electrode and the source electrode of the N-type metal-oxide-semiconductor correspond to institute
State control terminal, hot end and the cold end of third switching tube 31.
The embodiment of the present invention also provides a kind of electric vehicle, and the electric vehicle includes above-mentioned charging circuit.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
The specific implementation of the present invention is confined to these explanations.For those of ordinary skill in the art to which the present invention belongs, exist
Several equivalent substitute or obvious modifications are made under the premise of not departing from present inventive concept, and performance or use is identical, all should
It is considered as belonging to present invention scope of patent protection determined by the appended claims.
Claims (9)
1. a kind of charging circuit；It is characterized in that, the charging circuit includes RF receiving circuit, control module, discharge switch
Circuit；The control module is electrically connected with the RF receiving circuit and the discharge switching circuit respectively；
The RF receiving circuit is sent out for being received by antenna during charger charges to battery by the charger
The first radiofrequency signal sent demodulates discharge instruction signal from first radiofrequency signal, and is exported to the control module
The discharge instruction signal；
The control module, for generating electric discharge instruction when detecting the discharge instruction signal, and to the discharge switch
It discharges and instructs described in circuit output；
The discharge switching circuit, for detecting the discharge loop that the battery is connected to load when the electric discharge instruction；
Wherein, it is described demodulated from first radiofrequency signal discharge instruction signal include to first radiofrequency signal successively
Frequency carries out bandpass filtering, signal amplification, the carrier wave demodulation of removal carrier wave, signal demodulation, signal tune centered on carrier frequency
It is whole, obtain discharge instruction signal；
The charging circuit further includes switching circuit of power supply；The switching circuit of power supply has the first controlled end, the second controlled end
And feeder ear, the control module have power end and keep end；Described first controlled termination institute of the switching circuit of power supply
RF receiving circuit is stated, second controlled end of the switching circuit of power supply and feeder ear correspondence connect the control module
The holding end and the power end；
The RF receiving circuit is additionally operable to connect by the antenna match when the charger starts to charge to the battery
The second radiofrequency signal sent by the charger is received, power supply signal is demodulated from second radiofrequency signal, to the confession
Electric switch circuit exports the power supply signal；
The switching circuit of power supply, in a period of receiving the power supply signal from first controlled end from the confession
Electric end exports the first power supply signal, is additionally operable to receive from second controlled end when keeping signal from feeder ear output the
Two power supply signals；
The control module is additionally operable to generate the holding signal when detecting the first power supply signal from the power end, from
The holding end exports the holding signal to the charging circuit.
2. charging circuit as described in claim 1, which is characterized in that the discharge switching circuit includes metal-oxide-semiconductor；
The discharge switching circuit passes through conducting specifically for the metal-oxide-semiconductor is connected when the electric discharge instructs with the battery
The metal-oxide-semiconductor to the load discharge.
3. charging circuit as described in claim 1, which is characterized in that the switching circuit of power supply includes：Battery, the one or two pole
Pipe, the second diode, third diode, first resistor, second resistance, 3rd resistor, first switch pipe and second switch pipe；
The anode of first diode is the first controlled end of the switching circuit of power supply, and the anode of second diode is
The cathode of second controlled end of the switching circuit of power supply, the cathode of first diode and second diode meets institute
The first end of first resistor is stated, control terminal, hot end and the cold end correspondence of the first switch pipe connect first electricity
The second end of resistance, the second end of the second resistance and ground, control terminal, hot end and the cold end of the second switch pipe
The anode of the corresponding first end for connecing the second resistance, the battery and third diode, the first end of the 3rd resistor and
Second end corresponds to the first end for connecing the battery and the second resistance, and the cathode of the third diode is the power switch
The feeder ear of circuit.
4. the charging circuit as described in claim 1, which is characterized in that the RF receiving circuit includes radio demodulating circuit
And delay circuit；The delay circuit be serially connected in the radio demodulating circuit and the switching circuit of power supply the first controlled end it
Between；
The radio demodulating circuit, for being received by the antenna match when the charger starts to charge to the battery
The second radiofrequency signal sent by the charger demodulates power supply signal from second radiofrequency signal；
The delay circuit, the duration for extending the power supply signal demodulated, to the first of the switching circuit of power supply
Controlled end exports extended power supply signal.
5. charging circuit as claimed in claim 4, which is characterized in that the delay circuit includes the 11st capacitance, the 11st
Resistance, twelfth resistor, thirteenth resistor, the 14th resistance, comparison amplifier and reference power supply；
The first end and second end correspondence of the eleventh resistor is connecing the radio demodulating circuit and the comparison amplifier just
Phase input terminal, the first end and second end of the 11st capacitance correspond to the normal phase input end and ground that connect the comparison amplifier,
The first end and second end of the twelfth resistor corresponds to the inverting input for connecing the reference power supply and the comparison amplifier,
The first end and second end of the thirteenth resistor corresponds to the inverting input and ground for connecing the comparison amplifier, and the described 14th
It is first controlled to correspond to the output end and the switching circuit of power supply that connect the comparison amplifier for the first end and second end of resistance
End.
6. charging circuit as described in claim 1, which is characterized in that the charging circuit further includes starting switch circuit；Institute
Stating starting switch circuit has switch terminals and output end, and the external electric door lock of switch terminals, the output termination is described to be supplied to establish by cable
First controlled end on powered-down road；
The starting switch circuit, when for detecting the enabling signal that the electric door lock exports from the switch terminals, from described
Output end exports the ON signal of low potential.
7. charging circuit as claimed in claim 6, which is characterized in that the starting switch circuit include the 31st resistance and
Third switching tube；
The first end of 31st resistance is the switch terminals of the starting switch circuit, the high potential of the third switching tube
End is the output end of the starting switch circuit；Control terminal and the cold end correspondence of the third switching tube connect the described 30th
The second end and ground of one resistance.
8. charging circuit as claimed in claim 7, which is characterized in that the third switching tube is NPN type triode；It is described
The base stage of NPN type triode, collector and emitter correspond to control terminal, hot end and the low potential of the third switching tube
End；
Or the third switching tube is N-type metal-oxide-semiconductor, grid, drain electrode and the source electrode of the N-type metal-oxide-semiconductor correspond to the third
Control terminal, hot end and the cold end of switching tube.
9. a kind of electric vehicle, which is characterized in that the electric vehicle includes claim 1 to 8 any one of them charging circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410369772.2A CN105305520B (en) | 2014-07-30 | 2014-07-30 | Charging circuit and electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410369772.2A CN105305520B (en) | 2014-07-30 | 2014-07-30 | Charging circuit and electric vehicle |
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| Publication Number | Publication Date |
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| CN105305520A CN105305520A (en) | 2016-02-03 |
| CN105305520B true CN105305520B (en) | 2018-08-10 |
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| CN201410369772.2A Active CN105305520B (en) | 2014-07-30 | 2014-07-30 | Charging circuit and electric vehicle |
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| CN112557914A (en) * | 2020-12-21 | 2021-03-26 | 徐工消防安全装备有限公司 | Electric quantity display method and device, controller, engineering machinery and storage medium |
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| CN1251953A (en) * | 1998-10-21 | 2000-05-03 | 钟阳 | Charging method for elongating service life of rechargeable battery |
| CN1421973A (en) * | 2001-11-26 | 2003-06-04 | 河村电器产业株式会社 | Automatic leakage circuit breaker with prevention function of malfunction |
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| CN105305520A (en) | 2016-02-03 |
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