CN209634315U - A kind of charging wake-up circuit - Google Patents
A kind of charging wake-up circuit Download PDFInfo
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- CN209634315U CN209634315U CN201920293559.6U CN201920293559U CN209634315U CN 209634315 U CN209634315 U CN 209634315U CN 201920293559 U CN201920293559 U CN 201920293559U CN 209634315 U CN209634315 U CN 209634315U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
The utility model provides a kind of charging wake-up circuit, is suitable for new energy car battery management system, specific structure includes: suspend mode unit and wakeup unit；Wherein: the input terminal of the suspend mode unit is connected with power supply unit, and the output end of the suspend mode unit is connected with the control terminal of the wakeup unit, and the input terminal of the wakeup unit is connected with power supply, and the output end of the wakeup unit is connected with Vehicular charger；The suspend mode unit is used for when rising edge occurs in the power transmission signal received, is controlled the wakeup unit and is waken up the Vehicular charger.The utility model is using suspend mode unit when receiving the power transmission signal for rising edge occur, and control wakeup unit wakes up Vehicular charger, it is ensured that new energy car battery management system can be waken up again after entering suspend mode.The realization of only remote reserved charging lays the foundation, and can also save unnecessary waste of energy.
Description
Technical field
The utility model relates to new energy car battery administrative skill field more particularly to a kind of charging wake-up circuits.
Background technique
In recent years, new-energy automobile is quickly grown, and new energy car battery management system matched with its has also obtained fastly
Speed development.
Currently, although most of new energy car battery management system is waken up when being charged using international exchange by CC,
Without being waken up using CP；But also some new energy car battery management system wakes up using CP.But actually answering
In, especially in remote reserved charging, new energy car battery management system otherwise once enter suspend mode, can not just call out
It wakes up, new energy battery management system can only be reactivated by the way of pulling out charging gun and reinserting to wake up again
System；It is exactly to be always held at working condition, causes unnecessary energy waste.
Therefore, though using CP wake up new-energy automobile management system there is also work as new energy car battery management system
Into after suspend mode, the problem of can not waking up again.
Utility model content
In view of this, the utility model embodiment provides a kind of charging wake-up circuit, to solve to work as new energy car battery
After management system enters suspend mode, the problem of can not waking up again.
To achieve the above object, the utility model embodiment provides the following technical solutions:
A kind of charging wake-up circuit is suitable for new energy car battery management system, comprising: suspend mode unit and wake-up are single
Member；Wherein:
The input terminal of the suspend mode unit is connected with power supply unit, receives power transmission signal；
The output end of the suspend mode unit is connected with the control terminal of the wakeup unit；
The input terminal of the wakeup unit is connected with power supply；
The output end of the wakeup unit exports wake-up signal to Vehicular charger；And when the power transmission signal goes out
When existing rising edge, the wake-up signal is the high level that can wake up the Vehicular charger.
Preferably, when the power transmission signal charging gun access phase or interrupt after again the charging stage occur on
Rise along when, the wake-up signal is the high level that can wake up the Vehicular charger.
Preferably, when the power transmission signal is in the impulse transfer stage, the waveform of the wake-up signal follows institute
The waveform for stating power transmission signal is converted.
Preferably, when the power transmission signal is in interrupt phase, the wake-up signal is to make the vehicle-mounted charge
Machine enters the low level of dormant state.
Preferably, the suspend mode unit, comprising: time delay module, first switch module and transmission branch；Wherein:
The input terminal of the time delay module is connected with the input terminal of the transmission branch, and tie point is as the suspend mode unit
Input terminal；
The output end of the time delay module is connected with the control terminal of the first switch module；
The first end of the first switch module is grounded；
The second end of the first switch module is connected with the output end of the transmission branch, and tie point is as the suspend mode
The output end of unit；
After there is rising edge in the power transmission signal maintain high level preset duration in, the transmission branch it is defeated
Outlet exports the output end of conductivity control signal to the suspend mode unit；When the power transmission signal keeps the duration of high level
After reaching preset duration, the signal of the time delay module output controls the first switch module action, makes described first to open
The second end for closing module exports the control terminal of delay control signal to the first switch module.
Preferably, the time delay module, comprising: first resistor, second resistance and capacitor；Wherein, the second resistance and
The capacitor is in parallel, and one end ground connection of the parallel connection, the other end of the parallel connection is connected with one end of the first resistor, connects
Output end of the point as the time delay module；Input terminal of the other end of the first resistor as the time delay module；
The first switch module, comprising: first switch tube；The control terminal of the first switch tube is opened as described first
The control terminal of module is closed, first end of the first end of the first switch tube as the first switch module, described first opens
Close second end of the second end of pipe as the first switch module；
The transmission branch, comprising: 3rd resistor；Input of the one end of the 3rd resistor as the transmission branch
End, output end of the other end of the 3rd resistor as the transmission branch.
Preferably, the wakeup unit, comprising: second switch module and third switch module；Wherein:
Control terminal of the control terminal of the second switch module as the wakeup unit；The of the second switch module
Two ends are connected with the control terminal of the third switch module；The first end of the second switch module is grounded；
Input terminal of the first end of the third switch module as the wakeup unit；The of the third switch module
Output end of two ends as the wakeup unit；
When the second switch module receives conductivity control signal, the third switch module conducting；Described second opens
When pass module receives shutdown control signal, the third switch module shutdown.
Preferably, the second switch module, comprising: the 4th resistance, the 5th resistance, the 6th resistance and second switch；
Wherein:
Control terminal of the one end of 4th resistance as the second switch module；
The other end of 4th resistance is connected with one end of the 5th resistance, tie point and the second switch
Control terminal is connected；
The other end of 5th resistance is connected with the first end of the second switch, and tie point is opened as described second
Close the first end of module；
The second end of the second switch is connected with one end of the 6th resistance；The other end of 6th resistance is made
For the second end of the second switch module.
Preferably, the third switch module, comprising: the 7th resistance, the 8th resistance and third switching tube；Wherein:
One end of 7th resistance is connected with the control terminal of the third switching tube, and tie point is switched as the third
The control terminal of module；
The other end of 7th resistance is connected with one end of the 8th resistance, tie point and the third switching tube
First end is connected；
First end of the other end of 8th resistance as the third switch module；The second of the third switching tube
Hold the second end as the third switch module.
Preferably, further includes: the diode being set between the power supply unit and the input terminal of the suspend mode unit；Its
In:
The anode of the diode is connected with the power supply unit, and the cathode of the diode is defeated with the suspend mode unit
Enter end to be connected.
In terms of existing technologies, the utility model is receiving the power transmission for rising edge occur using suspend mode unit
When signal, control wakeup unit wakes up Vehicular charger, it is ensured that new energy car battery management system enters after suspend mode can be by
It wakes up again.The realization of only remote reserved charging lays the foundation, and can also save unnecessary waste of energy.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 is a kind of schematic diagram for the wake-up circuit that charges disclosed in the utility model embodiment；
Fig. 2 is the waveform of power transmission signal AC_CP and wake-up signal AC_CP_WakeUp in the utility model embodiment
Schematic diagram；
Fig. 3 is a kind of schematic diagram of embodiment of suspend mode unit 110 disclosed in another embodiment of the utility model；
Fig. 4 is a kind of schematic diagram of implementation of time delay module 111 disclosed in another embodiment of the utility model；
Fig. 5 is a kind of schematic diagram of embodiment of wakeup unit 120 disclosed in another embodiment of the utility model；
Fig. 6 is a kind of schematic diagram of implementation of second switch module 121 disclosed in another embodiment of the utility model；
Fig. 7 is a kind of schematic diagram of implementation of third switch module 122 disclosed in another embodiment of the utility model；
Fig. 8 is a kind of schematic diagram for the wake-up circuit that charges disclosed in another embodiment of the utility model.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing and have
Body embodiment is described in further detail the utility model.
In this application, the terms "include", "comprise" or any other variant thereof is intended to cover non-exclusive inclusion,
So that the process, method, article or equipment for including a series of elements not only includes those elements, but also including not having
The other element being expressly recited, or further include for elements inherent to such a process, method, article, or device.Do not having
There is the element limited in the case where more limiting by sentence "including a ...", it is not excluded that in the mistake including the element
There is also other identical elements in journey, method, article or equipment.
In order to solve the problem of can not to wake up again after new energy car battery management system enters suspend mode, this implementation
Example discloses a kind of charging wake-up circuit, such as Fig. 1, and specific structure includes: suspend mode unit 110 and wakeup unit 120；Wherein:
The input terminal of suspend mode unit 110 is connected with power supply unit, output end and the wakeup unit 120 of suspend mode unit 110
Control terminal is connected, and the input terminal of wakeup unit 120 is connected with power supply, and the output end of wakeup unit 120 is connected with Vehicular charger.
Specific working principle are as follows:
After charging gun is connect with charging interface, power transmission signal that power supply unit is exported to suspend mode unit 110
AC_CP initially enters charging gun access phase, and at this stage occur first rising edge when, suspend mode unit 110 output lead
Logical control signal V1；After wakeup unit 120 receives conductivity control signal V1, itself forms access, the power supply of out-put supply
Voltage, and then wake-up signal AC_CP_WakeUp is made to become high level from low level；Vehicular charger is receiving high level
It is waken up after wake-up signal AC_CP_WakeUp.
Specifically, may refer to Fig. 2:
In the preset duration for maintaining high level after rising edge occurs in power transmission signal AC_CP, wakeup unit 120 is exported
Wake-up signal AC_CP_WakeUp be always maintained at high level；When power transmission signal AC_CP keeps the duration of high level to reach
After the preset duration, if power transmission signal AC_CP is still maintained at high level, power transmission signal AC_CP enters
Interrupt phase；If power transmission signal AC_CP becomes low level, and in N number of preset duration later, power transmission letter
Number AC_CP remains that the preset duration is high level, next preset duration is low level mechanical periodicity, then
Power transmission signal AC_CP enters the pulse change stage.
No matter power transmission signal AC_CP is in interrupt phase or pulse change stage, as long as it keeps high level
After duration reaches the preset duration, output is turned off control signal V2 by suspend mode unit 110；It is received in wakeup unit 120
After shutdown control signal V2, itself forms open circuit, and the wake-up signal AC_CP_WakeUp of output becomes low level from high level；Vehicle
It carries charger and enters suspend mode after receiving low level wake-up signal AC_CP_WakeUp.
If power transmission signal AC_CP is in the pulse change stage, when power transmission signal AC_CP is high level,
Suspend mode unit 110 exports conductivity control signal V1, and after wakeup unit 120 receives conductivity control signal V1, itself forms access,
The wake-up signal AC_CP_WakeUp of output is high level；And when power transmission signal AC_CP is low level, suspend mode unit
110 output shutdown control signal V2, after wakeup unit 120 receives shutdown control signal V2, itself forms open circuit, and output is called out
The signal AC_CP_WakeUp that wakes up is low level；It is possible thereby to be inferred to, when power transmission signal AC_CP is in the pulse change stage
When, it realizes wake-up signal AC_CP_WakeUp and is followed for what power transmission signal AC_CP waveform changed；Also, wake up letter
Number AC_CP_WakeUp is this stage achieves the mechanical periodicities of low and high level, then Vehicular charger can be filled in this stage
Electricity.
If power transmission signal AC_CP enters interrupt phase, when it rising edge occurs again, suspend mode unit 110 is defeated
Conductivity control signal V1 out after wakeup unit 120 receives conductivity control signal V1, itself forms access, the wake-up letter of output
Number AC_CP_WakeUp is high level；After receiving the wake-up signal AC_CP_WakeUp of high level, Vehicular charger is by again
Secondary wake-up, power transmission signal AC_CP charging stage again after entering the interrupt；Hereafter by the control process with the pulse change stage
It is identical.
It should be noted that in the present embodiment, the low and high level of power transmission signal AC_CP is intended merely to distinguish two kinds
Power transmission signal AC_CP can also in other ways distinguish two kinds of power transmission signal AC_CP, as long as therefore
It is within the protection scope of the present utility model for the mode of distinguishing two kinds of power transmission signal AC_CP.
It should be noted that similarly, as long as the mode for being used to distinguish two kinds of wake-up signal AC_CP_WakeUp also exists
In the protection scope of the utility model.
In terms of existing technologies, the utility model is receiving the power transmission for rising edge occur using suspend mode unit
When signal, control wakeup unit wakes up Vehicular charger, and realization enters after suspend mode again new energy car battery management system
Secondary wake-up.It not only can lay the foundation for the realization of remote reserved charging, the waste of unnecessary electric energy can also be saved.
Optionally, such as Fig. 3, in another embodiment of the utility model, a kind of embodiment of suspend mode unit 110 has
Body includes: time delay module 111, first switch module 112 and transmission branch 113；Wherein:
The input terminal of time delay module 111 is connected with the input terminal of transmission branch 113, and tie point is as suspend mode unit 110
Input terminal；The output end of time delay module 111 is connected with the control terminal of first switch module 112.
The first end of first switch module 112 is grounded, and the second end of first switch module 112 is defeated with transmission branch 113
Outlet is connected, output end of the tie point as suspend mode unit 110.
Specific working principle are as follows:
In the preset duration for maintaining high level after rising edge occurs in power transmission signal AC_CP, transmission branch 113
Export the output end of high level signal to suspend mode unit 110；At the same time, due to the time-lag action of time delay module 111, output
Delay control signal V3 to 112 control terminal of first switch module is low level, then first switch module 112 forms open circuit；Institute
It is the high level signal that transmission branch 113 exports, namely conducting control letter with the signal that the output end of suspend mode unit 110 exports
Number V1.
After the duration of power transmission signal AC_CP holding high level reaches the preset duration, due to time delay module
111 time-lag action, the delay control signal V3 variation for receiving first switch module 112 is high level, then first switch
Module 112 forms access, the current potential of its second end (output end of transmission branch 113) is pulled low to ground, and then make transmission branch
113 output low level signals, namely shutdown control signal V2.Because of the time-lag action of time delay module 111, power transmission letter
Number AC_CP keep the duration of high level reach the preset duration and change be a preset duration after low level it
Interior, time delay module 111 can also make delay control signal V3 slowly fall to low level by high level, control first switch module
112 maintain channel status in certain time length；When delay control signal V3 is not enough to that first switch module 112 is maintained to be connected,
Since power transmission signal AC_CP has been transformed to low level, so the output of transmission branch 113 will also become low level, in turn
Suspend mode unit is set to maintain output shutdown control signal V2, until power transmission signal AC_CP is transformed to the high level in next period.
It should be noted that the delay that the generation of time delay module 111 can be set is identical as the preset duration, so as to wake up
Signal AC_CP_WakeUp is identical in the period in pulse change stage with power transmission signal AC_CP；In practical application, only
Guarantee that the rising edge of the two corresponds to each other.
In addition, it should also be noted that, in the present embodiment, the low and high level of delay control signal V3 is intended merely to distinguish
Two kinds of delay control signal V3 can also in other ways distinguish two kinds of time delayed signals, as long as can be realized for
The mode of one switch module 112 accordingly controlled is within the protection scope of the present utility model.
Wherein, optionally, Fig. 4 show a kind of implementation of time delay module 111, specifically includes: first resistor R1,
Two resistance R2 and capacitor C；Wherein:
Second resistance R2 and capacitor C are in parallel, one end ground connection in parallel, one end phase of the other end in parallel and first resistor R1
Even, output end of the tie point as time delay module 111；Input terminal of the other end of first resistor R1 as time delay module 111.
It should be noted that the resistance value of first resistor R1 and second resistance R2 are equal in the present embodiment, and it is 1 Μ Ω, electricity
The capacitance for holding C is 1nF, can also choose corresponding first resistor R1, second resistance R2 and capacitor C according to actual needs, herein
With no restrictions.
Specific working principle are as follows:
In the preset duration that power transmission signal AC_CP maintains high level after there is rising edge, first resistor R1 and
There is electric current to flow through on second resistance R2, generate partial pressure, the partial pressure that wherein second resistance R2 is generated is capacitor C charging, is delayed at this time
The delay control signal V3 of 111 output end of module output is low level.
After power transmission signal AC_CP keeps the duration of high level to reach the preset duration, capacitor C charges to obtain
Voltage it is higher, make 111 output end of time delay module export delay control signal V3 high level.
It should be noted that the charging time of capacitor C, the i.e. slow liter delay of time delay module 111, with the preset time phase
Deng；In practical application, the discharge time of capacitor C, the i.e. delay of releasing of time delay module 111 can be set, also with it is described default when
Between it is equal.
Specifically, if when power transmission signal AC_CP is in the pulse change stage, power transmission signal AC_CP's
Frequency is 1KHz, and duty ratio 50%, then it is 0.5ms that it, which maintains the preset duration of low and high level identical,.Capacitor C in this way
Charging time it is identical with discharge time, it is ensured that after a cycle, the voltage of capacitor C is 0, that is, is guaranteed will
In the next cycle of progress, the voltage change of capacitor C is identical as the voltage change in upper a cycle；Meanwhile preset duration
It is set as 0.5ms, also ensures capacitor C after charging, voltage is greater than the threshold of first switch module 112 within a certain period of time
Threshold voltage；It not only can realize that the periodicity of first switch module 112 switches off and on, wake-up signal also may be implemented
AC_CP_WakeUp is followed completely to power transmission signal AC_CP's.
Optionally, a kind of implementation of first switch module 112, specifically includes: first switch tube Q1；Wherein:
Control terminal of the control terminal of first switch tube Q1 as first switch module 112, the first end of first switch tube Q1
As the first end of first switch module 112, second end of the second end of first switch tube Q1 as first switch module 112.
When the control terminal of first switch tube Q1 receives the delay control signal V3 of high level, first switch tube Q1 is led
It is logical, and export shutdown control signal V2.
When the control terminal of first switch tube Q1 receives low level delay control signal V3, first switch tube Q1 is not led
It is logical, shutdown control signal V2 is not exported.
Optionally, first switch tube Q1 is N-type metal-oxide semiconductor fieldeffect transistor (N-Metal-Oxide-
Semiconductor, NMOS).
Optionally, a kind of implementation of transmission branch 113, specifically includes: 3rd resistor R3；Wherein:
Input terminal of the one end of 3rd resistor R3 as transmission branch 113, the other end of 3rd resistor R3 is as transmission branch
The output end on road 113.
It should be noted that in the present embodiment, the resistance value of 3rd resistor R3 is 100K Ω, it is also possible to according to reality
Border needs to choose corresponding 3rd resistor R3, herein with no restrictions.
Remaining structure and working principle are same as the previously described embodiments, and details are not described herein again.
Optionally, such as Fig. 5, in another embodiment of the utility model, a kind of embodiment of wakeup unit 120 has
Body includes: second switch module 121 and third switch module 122；Wherein:
Control terminal of the control terminal of second switch module 121 as wakeup unit 120；The second of second switch module 121
End is connected with the control terminal of third switch module 122；The first end of second switch module 121 is grounded.
Input terminal of the first end of third switch module 122 as wakeup unit 120；The second of third switch module 122
Hold the output end as wakeup unit 120.
Specific working principle are as follows:
When second switch module 121 receives conductivity control signal V1, itself conducting is controlled, and export low level control
Signal V4 processed, third switch module 122 controls itself conducting after receiving low level control signal V4, and exports high electricity
Flat wake-up signal AC_CP_WakeUp.
When second switch module 121 receives shutdown control signal V2, controls itself and form open circuit, and export high level
Control signal V4, third switch module 122 after receiving the control signal V4 of high level, control itself formed open circuit, and
Export low level wake-up signal AC_CP_WakeUp.
The low and high level for controlling signal V4 is intended merely to control 122 turn-on and turn-off of third switch module, in practical application
It can be not limited in above-mentioned form depending on the concrete condition of third switch module 122.
Optionally, Fig. 6 show a kind of implementation of second switch module 121, specifically includes: the 4th resistance R4,
Five resistance R5, the 6th resistance R6 and second switch Q2；Wherein:
Control terminal of the one end of 4th resistance R4 as second switch module 121；The other end and the 5th of 4th resistance R4
One end of resistance R5 is connected, and tie point is connected with the control terminal of second switch Q2.
The other end of 5th resistance R5 is connected with the first end of second switch Q2, and tie point is as second switch module
121 first end；The second end of second switch Q2 is connected with one end of the 6th resistance R6；The other end conduct of 6th resistance R6
The second end of second switch module 121.
Optionally, second switch Q2 can be NMOS transistor, be also possible to NPN type triode.
It should be noted that the resistance value of the 4th resistance R4, the 5th resistance R5 and the 6th resistance R6 are to select according to actual needs
It takes, herein with no restrictions.
Specific working principle are as follows:
When one end of the 4th resistance R4 receives conductivity control signal V1, due to the first termination of second switch Q2
Ground, and the current potential of conductivity control signal V1 is high level, after the partial pressure of the 4th resistance R4 and the 5th resistance R5, second switch
The control terminal potential of Q2 is still greater than the current potential of its first end, so second switch Q2 is connected, exports low level control signal
V4。
When one end of the 4th resistance R4 receives shutdown control signal V2, since the current potential of shutdown control signal V2 is low
Level, after the partial pressure of the 4th resistance R4 and the 5th resistance R5, the current potential of the control terminal of second switch is not more than second switch
The first end of pipe Q2 exports the control signal V4 of high level so second switch Q2 is not turned on.
Optionally, Fig. 7 show a kind of implementation of third switch module 122, specifically includes: the 7th resistance R7,
Eight resistance R8 and third switching tube Q3；Wherein:
One end of 7th resistance R7 is connected with the control terminal of third switching tube Q3, and tie point is as third switch module Q3's
Control terminal；The other end of 7th resistance R7 is connected with one end of the 8th resistance R8, the first end of tie point and third switching tube Q3
It is connected.
First end of the other end of 8th resistance R8 as third switch module 122；The second end of third switching tube Q3 is made
For the second end of third switch module 122.
Optionally, third switching tube Q3 can be p-type metal-oxide semiconductor fieldeffect transistor (P-Metal-
Oxide-Semiconductor, PMOS), it is also possible to PNP type triode.
It should be noted that the resistance value of the 7th resistance R7 and the 8th resistance R8 is chosen according to actual needs, herein not
It is limited.
Specific working principle are as follows:
When the control terminal of third switch module 122 receives low level control signal V4, i.e. third switching tube Q3's
When control terminal receives low level control signal V4, since the current potential of the control terminal of third switching tube Q3 is low level, so
There is electric current to flow through on 7th resistance R7 and the 8th resistance R8, generates partial pressure.
It is high level, so third is opened because the current potential of the first end of third switching tube Q3 is the partial pressure of the 7th resistance R7
The current potential for closing the control terminal of pipe Q3 is less than the current potential of its first end, i.e. third switching tube Q3 conducting, and exports the wake-up of high level
Signal AC_CP_WakeUp.
When the control terminal of third switch module 122 receives the control signal V4 of high level, i.e. third switching tube Q3's
When control terminal receives the control signal V4 of high level, since the current potential of the control terminal of third switching tube Q3 is high level, so
No electric current flows through on 7th resistance R7 and the 8th resistance R8, does not generate partial pressure.
Because the first end of third switching tube Q3 is connected with the tie point of the 8th resistance R8 and the 7th resistance R7, third
The current potential of the control terminal of switching tube Q3 is equal to the current potential of its first end, i.e. third switching tube Q3 is not turned on, and is exported low level
Wake-up signal AC_CP_WakeUp.
Remaining structure and working principle are same as the previously described embodiments, and details are not described herein again.
Optionally, such as Fig. 8, on the basis of the above embodiments, in another embodiment of the utility model, charging is waken up
The another embodiment of circuit, further includes: diode Z；Wherein:
The anode of diode Z is connected with power supply unit, and the cathode of diode Z is connected with the input terminal of suspend mode unit 110.
It should be noted that increasing diode is that adverse current occurs in order to prevent, power supply unit is damaged, similarly,
It can be substituted with triode, therefore, other devices of adverse current can be prevented within the protection scope of the present utility model.
Remaining structure and working principle are same as the previously described embodiments, and details are not described herein again.
The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new
Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The widest scope consistent with features of novelty.
Claims (10)
1. a kind of charging wake-up circuit is suitable for new energy car battery management system characterized by comprising suspend mode unit
And wakeup unit；Wherein:
The input terminal of the suspend mode unit is connected with power supply unit, receives power transmission signal；
The output end of the suspend mode unit is connected with the control terminal of the wakeup unit；
The input terminal of the wakeup unit is connected with power supply；
The output end of the wakeup unit exports wake-up signal to Vehicular charger；And on the power transmission signal occurs
Rise along when, the wake-up signal is the high level that can wake up the Vehicular charger.
2. charging wake-up circuit according to claim 1, which is characterized in that when the power transmission signal connects in charging gun
When rising edge occurs in the charging stage again after connecing the stage or interrupting, the wake-up signal is that can wake up the vehicle-mounted charge
The high level of machine.
3. charging wake-up circuit according to claim 2, which is characterized in that become when the power transmission signal is in pulse
When changing the stage, the waveform of the wake-up signal follows the waveform of the power transmission signal to be converted.
4. charging wake-up circuit according to claim 2, which is characterized in that when the power transmission signal is in middle faulted-stage
Duan Shi, the wake-up signal are the low level for making the Vehicular charger enter dormant state.
5. charging wake-up circuit according to claim 3 or 4, which is characterized in that the suspend mode unit, comprising: delay mould
Block, first switch module and transmission branch；Wherein:
The input terminal of the time delay module is connected with the input terminal of the transmission branch, and tie point is defeated as the suspend mode unit
Enter end；
The output end of the time delay module is connected with the control terminal of the first switch module；
The first end of the first switch module is grounded；
The second end of the first switch module is connected with the output end of the transmission branch, and tie point is as the suspend mode unit
Output end；
In the preset duration for maintaining high level after rising edge occurs in the power transmission signal, the output end of the transmission branch
Export the output end of conductivity control signal to the suspend mode unit；When the power transmission signal keeps the duration of high level to reach
After preset duration, the signal of the time delay module output controls the first switch module action, makes the first switch mould
The second end of block exports the control terminal of delay control signal to the first switch module.
6. charging wake-up circuit according to claim 5, which is characterized in that the time delay module, comprising: first resistor,
Second resistance and capacitor；Wherein, the second resistance and the capacitor are in parallel, one end ground connection of the parallel connection, the parallel connection
The other end is connected with one end of the first resistor, output end of the tie point as the time delay module；The first resistor
Input terminal of the other end as the time delay module；
The first switch module, comprising: first switch tube；The control terminal of the first switch tube is as the first switch mould
The control terminal of block, first end of the first end of the first switch tube as the first switch module, the first switch tube
Second end of the second end as the first switch module；
The transmission branch, comprising: 3rd resistor；Input terminal of the one end of the 3rd resistor as the transmission branch, institute
State output end of the other end of 3rd resistor as the transmission branch.
7. charging wake-up circuit according to claim 3 or 4, which is characterized in that the wakeup unit, comprising: second opens
Close module and third switch module；Wherein:
Control terminal of the control terminal of the second switch module as the wakeup unit；The second end of the second switch module
It is connected with the control terminal of the third switch module；The first end of the second switch module is grounded；
Input terminal of the first end of the third switch module as the wakeup unit；The second end of the third switch module
Output end as the wakeup unit；
When the second switch module receives conductivity control signal, the third switch module conducting；The second switch mould
When block receives shutdown control signal, the third switch module shutdown.
8. charging wake-up circuit according to claim 7, which is characterized in that the second switch module, comprising: the 4th electricity
Resistance, the 5th resistance, the 6th resistance and second switch；Wherein:
Control terminal of the one end of 4th resistance as the second switch module；
The other end of 4th resistance is connected with one end of the 5th resistance, the control of tie point and the second switch
End is connected；
The other end of 5th resistance is connected with the first end of the second switch, and tie point is as the second switch mould
The first end of block；
The second end of the second switch is connected with one end of the 6th resistance；The other end of 6th resistance is as institute
State the second end of second switch module.
9. charging wake-up circuit according to claim 7, which is characterized in that the third switch module, comprising: the 7th electricity
Resistance, the 8th resistance and third switching tube；Wherein:
One end of 7th resistance is connected with the control terminal of the third switching tube, and tie point is as the third switch module
Control terminal；
The other end of 7th resistance is connected with one end of the 8th resistance, and the first of tie point and the third switching tube
End is connected；
First end of the other end of 8th resistance as the third switch module；The second end of the third switching tube is made
For the second end of the third switch module.
10. charging wake-up circuit according to claim 1, which is characterized in that further include: be set to the power supply unit and
Diode between the input terminal of the suspend mode unit；Wherein:
The anode of the diode is connected with the power supply unit, the input terminal of the cathode of the diode and the suspend mode unit
It is connected.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920293559.6U CN209634315U (en) | 2019-03-08 | 2019-03-08 | A kind of charging wake-up circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920293559.6U CN209634315U (en) | 2019-03-08 | 2019-03-08 | A kind of charging wake-up circuit |
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| CN209634315U true CN209634315U (en) | 2019-11-15 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109774534A (en) * | 2019-03-08 | 2019-05-21 | 上海度普新能源科技有限公司 | A kind of charging wake-up circuit |
| CN111697829A (en) * | 2020-06-30 | 2020-09-22 | 珠海奔图电子有限公司 | High-voltage divider, image forming apparatus, and method for controlling high-voltage divider |
| CN112918408A (en) * | 2021-02-07 | 2021-06-08 | 上海科世达-华阳汽车电器有限公司 | Wake-up circuit and vehicle |
| CN113056387A (en) * | 2021-03-26 | 2021-06-29 | 华为技术有限公司 | Charging control device and method and electric automobile |
-
2019
- 2019-03-08 CN CN201920293559.6U patent/CN209634315U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109774534A (en) * | 2019-03-08 | 2019-05-21 | 上海度普新能源科技有限公司 | A kind of charging wake-up circuit |
| CN109774534B (en) * | 2019-03-08 | 2024-01-30 | 上海度普新能源科技有限公司 | Charging wake-up circuit |
| CN111697829A (en) * | 2020-06-30 | 2020-09-22 | 珠海奔图电子有限公司 | High-voltage divider, image forming apparatus, and method for controlling high-voltage divider |
| CN112918408A (en) * | 2021-02-07 | 2021-06-08 | 上海科世达-华阳汽车电器有限公司 | Wake-up circuit and vehicle |
| CN113056387A (en) * | 2021-03-26 | 2021-06-29 | 华为技术有限公司 | Charging control device and method and electric automobile |
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