CN110450654A - Cell management system of electric automobile charging wake-up circuit - Google Patents
Cell management system of electric automobile charging wake-up circuit Download PDFInfo
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- CN110450654A CN110450654A CN201910846931.6A CN201910846931A CN110450654A CN 110450654 A CN110450654 A CN 110450654A CN 201910846931 A CN201910846931 A CN 201910846931A CN 110450654 A CN110450654 A CN 110450654A
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- 239000004065 semiconductor Substances 0.000 claims abstract description 109
- 239000003990 capacitor Substances 0.000 claims abstract description 28
- 239000013256 coordination polymer Substances 0.000 claims abstract description 18
- 230000002618 waking effect Effects 0.000 claims abstract description 6
- 238000007726 management method Methods 0.000 claims description 40
- 230000005611 electricity Effects 0.000 claims description 8
- 230000002045 lasting effect Effects 0.000 claims description 3
- 230000003068 static effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 2
- 230000005059 dormancy Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
-
- 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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- 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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- 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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The present invention relates to new energy vehicle field more particularly to a kind of battery management systems of electric car.A kind of cell management system of electric automobile charging wake-up circuit, including controlling signal processing circuit Z3 and wake-up signal output circuit Z1, control signal processing circuit Z3 includes the grid G of the capacitor C1 of sequential series, diode D1 and metal-oxide-semiconductor Q1, and the resistance R1 of ground connection is parallel between capacitor C1 and diode D1；The capacitor C2 of ground connection is also parallel between diode D1 and the grid G of metal-oxide-semiconductor Q1；Wake-up signal output circuit Z1 includes metal-oxide-semiconductor Q2, and the source S of metal-oxide-semiconductor Q2 is connected with vehicle-mounted accessory power supply, and the grid G of metal-oxide-semiconductor Q2 is connected with the drain D of metal-oxide-semiconductor Q1, and the drain D of metal-oxide-semiconductor Q2 is connected to battery management system BMS.The present invention controls the vehicle-mounted accessory power supply for waking up BMS using CP signal by the combination of metal-oxide-semiconductor, and in the dormant state, this circuit static power consumption is almost 0, realize energy-saving and environment-friendly target, structure low in cost is simple, on signal source without influence, has extensive application value.
Description
Technical field
The present invention relates to new energy vehicle field more particularly to a kind of battery management systems of electric car.
Background technique
According to national standard GBT 18487.1-2015 " electric car conduction charging system part 1 General Requirement " such as Fig. 1
Shown, trickle charge stake is with Vehicular charging interface in addition to exchange cable is connect, and there is also two identification signal ports, respectively CP signal
(Control Pilot controls signal) and CC signal (Connection Confirm charging connection signal), wherein between CC and PE
For purely, CP is PWM wave.After charging gun is inserted into vehicle interface, BMS is waken up first, passes through the electricity of contrasting detection point 3
Pressure value, judges whether CC signal meets the requirements, and judges charging pile cable power supply capacity, while BMS passes through input detection inspection
The duty ratio of the PWM wave of measuring point 2 determines the charging pile output power, BMS control closure S2 switch, charging pile after the completion of configuration
Closure, vehicle start to charge K1, K2 switch in succession.
Since electric car trickle charge new national standard increases a kind of protective device, the protection between power grid and Vehicular charger
Device, which carries out certain charging, to be made can control.This results in battery management system (BMS) can not be when needing to charge by usually only
There is the low pressure accessory power supply of the Vehicular charger of 12V to wake up.The wake source of existing most of BMS both is from CC signal, and CC
Signal itself is to belong to passive signal, and BMS itself is needed to remain certain voltage monitoring CC signal, thus when BMS is in
There is still a need for a part of quiescent current is retained for CC signal when dormant state, dormancy power consumption is generated, simultaneously because CC signal itself
The identification of charge cable tolerance electric current is had both, this wake-up mode can have some impact on accuracy of identification.
Equally there is fraction Scheme Choice CP signal as wake source in the prior art, CP itself is the friendship an of ± 12V
Signal is flowed, since CP signal is a PWM wave when in the prior art using CP signal as wake source, there are rising edges and decline
Edge, usual settling mode are that an independent edge triggered flip flop is used to need many chips to cooperate touching as signal capture unit
Hair, and then activate back-end circuit to provide control signal again and wake up BMS, this kind of mode higher cost, and chip cooperation triggering is
It needs to be constantly in standby mode, equally will increase BMS dormancy power consumption in this way.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of cell management system of electric automobile charging wake-up circuits, should
Charging wake-up circuit controls the vehicle-mounted accessory power supply for waking up BMS using CP signal by the combination of metal-oxide-semiconductor, in suspend mode shape
Under state, this circuit static power consumption is almost 0, realizes energy-saving and environment-friendly target, structure low in cost is simple, to signal source without shadow
It rings, there is extensive application value.
The wake-up circuit the present invention is implemented as follows: a kind of cell management system of electric automobile charges, is made by CP signal
It is controlled for signal source and wakes up battery management system BMS, including control signal processing circuit Z3 and wake-up signal output circuit Z1,
The control signal processing circuit Z3 includes the grid G of the capacitor C1 of sequential series, diode D1 and metal-oxide-semiconductor Q1, described
The resistance R1 of ground connection is parallel between capacitor C1 and the anode A of diode D1；The cathode K's and metal-oxide-semiconductor Q1 of the diode D1
The capacitor C2 of ground connection, the source S ground connection of metal-oxide-semiconductor Q1 are also parallel between source S；
The wake-up signal output circuit Z1 includes metal-oxide-semiconductor Q2, and the source S of the metal-oxide-semiconductor Q2 is connected with vehicle-mounted accessory power supply,
The grid G of metal-oxide-semiconductor Q2 is connected with the drain D of metal-oxide-semiconductor Q1, and the drain D of metal-oxide-semiconductor Q2 exports high level signal to battery management system
Wake-up signal of the BMS as battery management system BMS；
The metal-oxide-semiconductor Q1 is NMOS, and the metal-oxide-semiconductor Q2 is PMOS.
It further include filter circuit Z5, the filter circuit Z5 includes resistance R7, diode D3 and capacitor C3, the diode
D3 cathode K is connected with battery management system BMS, and the anode A of diode D3 is connected by resistance R7 with the drain D of metal-oxide-semiconductor Q2, institute
The one end capacitor C3 ground connection other end is stated to be connected in parallel between the anode A of diode D3 and resistance R7.
It further include waking up holding circuit Z2 and releasing wake-up circuit Z4,
The wake-up holding circuit Z2 is connected between the drain D of metal-oxide-semiconductor Q2 and the grid G of metal-oxide-semiconductor Q1, the drain D of metal-oxide-semiconductor Q2
Pass through the wake-up holding circuit Z2 grid G for being loaded into metal-oxide-semiconductor Q1 lasting simultaneously after exporting high level signal；
The releasing wake-up circuit Z4 includes metal-oxide-semiconductor Q3, the drain D of the metal-oxide-semiconductor Q3 and the output end for waking up holding circuit Z2
It being connected in parallel in the grid G of metal-oxide-semiconductor Q1, the grid G of metal-oxide-semiconductor Q3 is connected with the lower electric signal delivery outlet of battery management system BMS,
The source S of metal-oxide-semiconductor Q3 is grounded；The metal-oxide-semiconductor Q3 is NMOS.
The wake-up holding circuit Z2 includes the anode A and metal-oxide-semiconductor Q2 of diode D2 and resistance R6, the diode D2
Drain D is connected, and the resistance R6 is connected between the grid G of metal-oxide-semiconductor Q1 and the cathode K of diode D2.
It further include having the first bleeder circuit in the wake-up signal output circuit Z1, first bleeder circuit includes resistance
R4 and resistance R5, the one end the resistance R4 are connected with vehicle-mounted accessory power supply, after the other end of resistance R4 is in parallel with resistance R5 with MOS
The grid G of pipe Q2 is connected, and the other end of the resistance R5 is connected with the drain D of metal-oxide-semiconductor Q1.
Further include having the second bleeder circuit in the control signal processing circuit Z3, second bleeder circuit for reducing
CP signal is finally loaded into the voltage of the grid G of metal-oxide-semiconductor Q1.
Second bleeder circuit includes resistance R2 and resistance R3, the cathode K phase of the one end the resistance R2 and diode D1
Even, it is connected after the other end of resistance R2 is in parallel with resistance R3 with the grid G of metal-oxide-semiconductor Q1, the other end ground connection of the resistance R3；Institute
Capacitor C2 is stated to be connected in parallel between the cathode K of diode D1 and ground.
Second bleeder circuit includes resistance R2 and resistance R3, the cathode K phase of the one end the resistance R2 and diode D1
Even, it is connected after the other end of resistance R2 is in parallel with resistance R3 with the grid G of metal-oxide-semiconductor Q1, the other end ground connection of the resistance R3；Institute
Capacitor C2 is stated to be connected in parallel between the grid G and ground of metal-oxide-semiconductor Q1.
Further include having third bleeder circuit in the releasing wake-up circuit Z4, the third bleeder circuit include resistance R8 and
Resistance R9, the one end the resistance R8 are connected with the lower electric signal delivery outlet of battery management system BMS, the other end and electricity of resistance R8
It is connected after resistance R9 is in parallel with the grid G of metal-oxide-semiconductor Q3, the other end ground connection of the resistance R9.
Cell management system of electric automobile charging wake-up circuit of the present invention is by the combination of metal-oxide-semiconductor using CP signal to wake-up
The vehicle-mounted accessory power supply of BMS is controlled, and in the dormant state, this circuit static power consumption is almost 0, completely by universal elements
Composition wakes up holding circuit and highly stable can provide wake-up voltage for BMS after releasing wake-up circuit being provided with, and
It realizes and automatically terminates after charging complete, realize energy-saving and environment-friendly target, structure low in cost is simple, on signal source without influence,
With extensive application value.
Detailed description of the invention
Fig. 1 is that the electric car charge control in existing national standard guides circuit diagram；
Fig. 2 is 1 circuit diagram of embodiment of cell management system of electric automobile of the present invention charging wake-up circuit；
Fig. 3 is the circuit diagram of the embodiment of the present invention 2；
Fig. 4 is the workflow block diagram of cell management system of electric automobile of the present invention charging wake-up circuit.
Specific embodiment
Present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate the present invention
Rather than it limits the scope of the invention.In addition, it should also be understood that, after having read the content of the invention stated, those skilled in the art
Member can make various changes or modifications the present invention, and such equivalent forms equally fall within the application the appended claims and limited
Range.
Embodiment 1
The wake-up circuit as shown in Fig. 2, a kind of cell management system of electric automobile charges is called out by CP signal as signal source control
Wake up battery management system BMS, including control signal processing circuit Z3 and wake-up signal output circuit Z1,
The control signal processing circuit Z3 includes the grid G of the capacitor C1 of sequential series, diode D1 and metal-oxide-semiconductor Q1, described
The resistance R1 of ground connection is parallel between capacitor C1 and the anode A of diode D1；The cathode K's and metal-oxide-semiconductor Q1 of the diode D1
The capacitor C2 of ground connection, the source S ground connection of metal-oxide-semiconductor Q1 are also parallel between source S；CP signal is coupled to diode by capacitor C1
D1 anode A, capacitor C2 are connected in parallel between the cathode K of diode D1 and ground, and the half-wave signa after diode D1 copped wave is rectified into
One more gentle direct current signal provides driving voltage Vgs to the grid G of metal-oxide-semiconductor Q1；Metal-oxide-semiconductor Q1 described herein is NMOS.
In the present embodiment, in order to improve the service life of metal-oxide-semiconductor Q1, further include in the control signal processing circuit Z3
There is the second bleeder circuit, second bleeder circuit is finally loaded into the voltage of the grid G of metal-oxide-semiconductor Q1 for reducing CP signal；
Second bleeder circuit includes resistance R2 and resistance R3, and the one end the resistance R2 is connected with the cathode K of diode D1, resistance R2
The other end it is in parallel with resistance R3 after be connected with the grid G of metal-oxide-semiconductor Q1, the other end of the resistance R3 is grounded；The capacitor C2
It is connected in parallel between the cathode K of diode D1 and ground；Direct current signal after rectification is using the partial pressure of resistance R2 and R3 to metal-oxide-semiconductor Q1
Grid G provide driving voltage Vgs；
The wake-up signal output circuit Z1 includes metal-oxide-semiconductor Q2, and the source S of the metal-oxide-semiconductor Q2 is connected with vehicle-mounted accessory power supply,
The grid G of metal-oxide-semiconductor Q2 is connected with the drain D of metal-oxide-semiconductor Q1, and the drain D of metal-oxide-semiconductor Q2 exports high level signal to battery management system
Wake-up signal of the BMS as battery management system BMS；Metal-oxide-semiconductor Q2 described herein is PMOS, and b point original state is high level
Metal-oxide-semiconductor Q2 is in close state, and is pulled to 0 by b point current potential after the drain D driving of metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q2 is opened, metal-oxide-semiconductor Q2
Drain D can export high level signal to battery management system BMS, realize wake-up to BMS.
In the present embodiment, in order to improve the service life of metal-oxide-semiconductor Q2, further include in the wake-up signal output circuit Z1
There is the first bleeder circuit, first bleeder circuit includes resistance R4 and resistance R5, and the one end the resistance R4 and vehicle-mounted auxiliary are electric
Source is connected, and is connected after the other end of resistance R4 is in parallel with resistance R5 with the grid G of metal-oxide-semiconductor Q2, the other end of the resistance R5 and
The drain D of metal-oxide-semiconductor Q1 is connected.
In the present invention, in order to guarantee metal-oxide-semiconductor Q2 drain D output signal stability, the management of this batteries of electric automobile
System charging wake-up circuit further includes filter circuit Z5, and the filter circuit Z5 includes resistance R7, diode D3 and capacitor C3, institute
The cathode K for stating diode D3 is connected with battery management system BMS, and the anode A of diode D3 passes through the leakage of resistance R7 and metal-oxide-semiconductor Q2
Pole D series connection, the one end capacitor C3 ground connection other end are connected in parallel between the anode A of diode D3 and resistance R7.
In addition, it is contemplated that CP signal may be subjected to interference effect and fluctuate in battery charging process, cause to wake up
Signal it is unstable, this cell management system of electric automobile charging wake-up circuit further include wake up holding circuit Z2 and release wake up
Circuit Z4；
The wake-up holding circuit Z2 is connected between the drain D of metal-oxide-semiconductor Q2 and the grid G of metal-oxide-semiconductor Q1, the drain D of metal-oxide-semiconductor Q2
Pass through the wake-up holding circuit Z2 grid G for being loaded into metal-oxide-semiconductor Q1 lasting simultaneously after exporting high level signal, forms a feedback
Circuit；
The releasing wake-up circuit Z4 includes metal-oxide-semiconductor Q3, the drain D of the metal-oxide-semiconductor Q3 and the output end for waking up holding circuit Z2
It being connected in parallel in the grid G of metal-oxide-semiconductor Q1, the grid G of metal-oxide-semiconductor Q3 is connected with the lower electric signal delivery outlet of battery management system BMS,
The source S of metal-oxide-semiconductor Q3 is grounded；The metal-oxide-semiconductor Q3 is NMOS, after the lower electric signal that metal-oxide-semiconductor Q3 receives BMS is opened, the electricity of a point
Position is pulled to 0, so that metal-oxide-semiconductor Q1 is closed, b point is restored to high level, and metal-oxide-semiconductor Q2 closes the charging wake-up for terminating this BMS.
It in the present embodiment, further include having in the releasing wake-up circuit Z4 in order to improve the service life of metal-oxide-semiconductor Q3
Three bleeder circuits, the third bleeder circuit include resistance R8 and resistance R9, the one end the resistance R8 and battery management system BMS
Lower electric signal delivery outlet be connected, the other end of resistance R8 is connected with after resistance R9 parallel connection with the grid G of metal-oxide-semiconductor Q3, the electricity
Hinder the other end ground connection of R9.
It is illustrated in figure 4 the workflow frame of cell management system of electric automobile charging wake-up circuit various pieces of the present invention
Figure, capacitor C1 are ac coupling capacitor；The main element of Z1 is PMOS tube, and PMOS tube is as switch control from vehicle 12V
Power supply of the vehicle-mounted accessory power supply to BMS, control terminal are driven by the signal that Z3 is generated, and figure midpoint b original state is high level.Z2 is
Feedback loop is exported, for locking state of a control.The control signal source of Z3 is the exchange PWM wave of CP signal port output, by two
Pole pipe D1 is rectified by signal copped wave, then by capacitor C2, and the voltage of a point as shown in the figure is made to reach the cut-in voltage of NMOS tube Q1,
B point current potential is pulled to ground potential after Q1 is opened.Z4 is wake-up signal reset circuit, generates telecommunications under a high level by BMS
Number, lock the status releasing of entire wake-up circuit.Z5 is filter circuit.
Embodiment 2
The wake-up circuit as shown in figure 3, a kind of cell management system of electric automobile charges, the difference of embodiment 2 and embodiment 1 exist
In second bleeder circuit includes resistance R2 and resistance R3, and the one end the resistance R2 is connected with the cathode K of diode D1, electricity
The other end for hindering R2 is connected with after resistance R3 parallel connection with the grid G of metal-oxide-semiconductor Q1, the other end ground connection of the resistance R3；The electricity
Hold C2 to be connected in parallel between the grid G and ground of metal-oxide-semiconductor Q1.
Claims (9)
- The wake-up circuit 1. a kind of cell management system of electric automobile charges, is controlled as signal source by CP signal and wakes up cell tube Reason system BMS, it is characterized in that: include control signal processing circuit Z3 and wake-up signal output circuit Z1,The control signal processing circuit Z3 includes the grid G of the capacitor C1 of sequential series, diode D1 and metal-oxide-semiconductor Q1, described The resistance R1 of ground connection is parallel between capacitor C1 and the anode A of diode D1；The cathode K's and metal-oxide-semiconductor Q1 of the diode D1 The capacitor C2 of ground connection, the source S ground connection of metal-oxide-semiconductor Q1 are also parallel between source S；The wake-up signal output circuit Z1 includes metal-oxide-semiconductor Q2, and the source S of the metal-oxide-semiconductor Q2 is connected with vehicle-mounted accessory power supply, The grid G of metal-oxide-semiconductor Q2 is connected with the drain D of metal-oxide-semiconductor Q1, and the drain D of metal-oxide-semiconductor Q2 exports high level signal to battery management system Wake-up signal of the BMS as battery management system BMS；The metal-oxide-semiconductor Q1 is NMOS, and the metal-oxide-semiconductor Q2 is PMOS.
- The wake-up circuit 2. cell management system of electric automobile as described in claim 1 charges, it is characterized in that: further including filtered electrical Road Z5, the filter circuit Z5 include resistance R7, diode D3 and capacitor C3, the diode D3 cathode K and battery management system The BMS that unites is connected, and diode D3 anode A is connected by resistance R7 with the drain D of metal-oxide-semiconductor Q2, and the one end capacitor C3 ground connection is another End is connected in parallel between the anode A of diode D3 and resistance R7.
- The wake-up circuit 3. cell management system of electric automobile as claimed in claim 1 or 2 charges, it is characterized in that: further including calling out Wake up holding circuit Z2 and releasing wake-up circuit Z4,The wake-up holding circuit Z2 is connected between the drain D of metal-oxide-semiconductor Q2 and the grid G of metal-oxide-semiconductor Q1, the drain D of metal-oxide-semiconductor Q2 Pass through the wake-up holding circuit Z2 grid G for being loaded into metal-oxide-semiconductor Q1 lasting simultaneously after exporting high level signal；The releasing wake-up circuit Z4 includes metal-oxide-semiconductor Q3, the drain D of the metal-oxide-semiconductor Q3 and the output end for waking up holding circuit Z2 It being connected in parallel in the grid G of metal-oxide-semiconductor Q1, the grid G of metal-oxide-semiconductor Q3 is connected with the lower electric signal delivery outlet of battery management system BMS, The source S of metal-oxide-semiconductor Q3 is grounded；The metal-oxide-semiconductor Q3 is NMOS.
- The wake-up circuit 4. cell management system of electric automobile as claimed in claim 3 charges, it is characterized in that: the wake-up is kept Circuit Z2 includes diode D2 and resistance R6, and the anode A of the diode D2 is connected with the drain D of metal-oxide-semiconductor Q2, the resistance R6 It is connected between the grid G of metal-oxide-semiconductor Q1 and the cathode K of diode D2.
- The wake-up circuit 5. cell management system of electric automobile as claimed in claim 3 charges, it is characterized in that: the wake-up signal It further include having the first bleeder circuit in output circuit Z1, first bleeder circuit includes resistance R4 and resistance R5, the resistance The one end R4 is connected with vehicle-mounted accessory power supply, is connected after the other end of resistance R4 is in parallel with resistance R5 with the grid G of metal-oxide-semiconductor Q2, institute The other end for stating resistance R5 is connected with the drain D of metal-oxide-semiconductor Q1.
- The wake-up circuit 6. cell management system of electric automobile as claimed in claim 3 charges, it is characterized in that: the control signal It further include having the second bleeder circuit in processing circuit Z3, second bleeder circuit is finally loaded into MOS for reducing CP signal The voltage of the grid G of pipe Q1.
- The wake-up circuit 7. cell management system of electric automobile as claimed in claim 6 charges, it is characterized in that: second partial pressure Circuit includes resistance R2 and resistance R3, and the one end the resistance R2 is connected with the cathode K of diode D1, the other end and electricity of resistance R2 It is connected after resistance R3 is in parallel with the grid G of metal-oxide-semiconductor Q1, the other end ground connection of the resistance R3；The capacitor C2 is connected in parallel on diode Between the cathode K and ground of D1.
- The wake-up circuit 8. cell management system of electric automobile as claimed in claim 6 charges, it is characterized in that: second partial pressure Circuit includes resistance R2 and resistance R3, and the one end the resistance R2 is connected with the cathode K of diode D1, the other end and electricity of resistance R2 It is connected after resistance R3 is in parallel with the grid G of metal-oxide-semiconductor Q1, the other end ground connection of the resistance R3；The capacitor C2 is connected in parallel on metal-oxide-semiconductor Q1 Grid G and ground between.
- The wake-up circuit 9. cell management system of electric automobile as claimed in claim 3 charges, it is characterized in that: the releasing wakes up It further include having third bleeder circuit in circuit Z4, the third bleeder circuit includes resistance R8 and resistance R9, the resistance R8 mono- End be connected with the lower electric signal delivery outlet of battery management system BMS, after the other end of resistance R8 is in parallel with resistance R9 with metal-oxide-semiconductor Q3 Grid G be connected, the other end of resistance R9 ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910846931.6A CN110450654A (en) | 2019-09-09 | 2019-09-09 | Cell management system of electric automobile charging wake-up circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910846931.6A CN110450654A (en) | 2019-09-09 | 2019-09-09 | Cell management system of electric automobile charging wake-up circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110450654A true CN110450654A (en) | 2019-11-15 |
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| CN201910846931.6A Pending CN110450654A (en) | 2019-09-09 | 2019-09-09 | Cell management system of electric automobile charging wake-up circuit |
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| CN110920392A (en) * | 2019-11-19 | 2020-03-27 | 珠海格力电器股份有限公司 | Power supply control circuit, power supply control method and new energy automobile |
| CN112564474A (en) * | 2020-12-15 | 2021-03-26 | 武汉力行远方电源科技有限公司 | Vehicle-mounted auxiliary power supply dormancy and delayed power-off circuit and system |
| CN112615407A (en) * | 2020-12-15 | 2021-04-06 | 潍柴动力股份有限公司 | BMS charging wake-up circuit, power supply method and system |
| CN113246755A (en) * | 2020-02-11 | 2021-08-13 | 武汉路特斯汽车有限公司 | Alternating-current charging control system for low-voltage battery of electric automobile |
| CN113452117A (en) * | 2021-06-30 | 2021-09-28 | 海南小鲨鱼智能科技有限公司 | Charging device |
| CN114179676A (en) * | 2021-08-27 | 2022-03-15 | 淮海机电科技股份有限公司 | Power-off delay circuit based on BMS battery management system and application system |
| CN114301106A (en) * | 2021-04-30 | 2022-04-08 | 华为数字能源技术有限公司 | Wake-up circuit of charging controller, vehicle-mounted charger and new energy automobile |
| CN115402148A (en) * | 2022-11-02 | 2022-11-29 | 江苏正力新能电池技术有限公司 | CP signal processing circuit |
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| CN110920392A (en) * | 2019-11-19 | 2020-03-27 | 珠海格力电器股份有限公司 | Power supply control circuit, power supply control method and new energy automobile |
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| CN114179676A (en) * | 2021-08-27 | 2022-03-15 | 淮海机电科技股份有限公司 | Power-off delay circuit based on BMS battery management system and application system |
| CN114179676B (en) * | 2021-08-27 | 2024-05-28 | 江苏淮海新能源股份有限公司 | Power-down delay circuit and application system based on BMS battery management system |
| CN115402148A (en) * | 2022-11-02 | 2022-11-29 | 江苏正力新能电池技术有限公司 | CP signal processing circuit |
| CN115402148B (en) * | 2022-11-02 | 2023-02-28 | 江苏正力新能电池技术有限公司 | CP signal processing circuit |
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Application publication date: 20191115 |