CN106537726B - A switching circuit for vehicle power supply and super capacitor power supply based on vehicle power supply - Google Patents
A switching circuit for vehicle power supply and super capacitor power supply based on vehicle power supply Download PDFInfo
- Publication number
- CN106537726B CN106537726B CN201680001301.3A CN201680001301A CN106537726B CN 106537726 B CN106537726 B CN 106537726B CN 201680001301 A CN201680001301 A CN 201680001301A CN 106537726 B CN106537726 B CN 106537726B
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- Prior art keywords
- power supply
- super capacitor
- vehicle
- switch
- resistance
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
A kind of vehicle electricity based on vehicle power supply and super capacitor power switching circuit, after vehicle electricity power down, system power supply can immediately be switched to super capacitor (3) power supply, switching between vehicle electricity and super capacitor (3) does not need to increase additional device and circuit, does not need logic control bring uncertainty yet, therefore the vehicle electricity and the circuit structure of super capacitor power switching circuit based on vehicle power supply are simple, and circuit is stable.
Description
Technical field
The invention belongs to mobile unit technical fields more particularly to a kind of vehicle electricity based on vehicle power supply and super capacitor to supply
Electrical switching circuit.
Background technique
Vehicle electronic device includes car audio system, navigation system, vehicle information system and vehicle-mounted household appliances etc., extensively
It applies in daily life generally.
Now, when after vehicle electricity Vbat power down, it is super that system immediately can be switched to backup power source in vehicle electronic device
Capacitances to supply power, to achieve the purpose that the storage for protecting equipment critical data.
But there are circuit structure complexity for existing power switching circuit, in addition, since existing circuit uses metal-oxide-semiconductor
Etc. the device for being also easy to produce uncertain factor, cause circuit unstable.
Summary of the invention
The embodiment of the present invention is designed to provide a kind of vehicle electricity based on vehicle power supply and super capacitor power switching electricity
Road, it is intended to solve the problems, such as that present power switching circuit is complicated there are circuit structure and circuit is unstable.
The embodiments of the present invention are implemented as follows, a kind of vehicle electricity based on vehicle power supply and super capacitor power switching electricity
Road, connects the system of being powered, and the vehicle electricity based on vehicle power supply includes: with super capacitor power switching circuit
It is connected to power supply and the vehicle electricity input DC-DC module being powered between system；
It is sequentially connected in series in the super capacitor being powered between the input terminal of system and ground, inductance L1 and metal-oxide-semiconductor Q2；
The vehicle electricity based on vehicle power supply and super capacitor power switching circuit further include diode D1, resistance R11 and
Charging management chip U1；
The anode of the diode D1 connects the source electrode of the metal-oxide-semiconductor Q2, and the cathode of the diode D1 meets the metal-oxide-semiconductor Q2
Drain electrode, the resistance R11 is connected to the output end of vehicle electricity input DC-DC module and between super capacitor, described to fill
The input terminal IN and reset terminal RS of electric managing chip U1 connect the both ends of the resistance R11 respectively, the charging management chip U1's
Output end DR connects the grid of the metal-oxide-semiconductor Q2.
In above structure, the vehicle electricity based on vehicle power supply and super capacitor power switching circuit further include overvoltage protection
Module, the overvoltage protective module include:
Controllable accurate source of stable pressure U2, resistance R1, resistance R16, first switch tube and second switch；
The input of the first switch tube terminates the resistance R11, the output termination described second of the first switch tube
The control terminal of switching tube, the control of the first switch tube terminate the cathode of the controllable accurate source of stable pressure U2, the resistance R16
And resistance R1 is serially connected between the input terminal of the first switch tube and the anode of controllable accurate source of stable pressure U2, the controllable accurate
The reference pole of source of stable pressure U2 connects the public connecting end of the resistance R16 and resistance R1, and the hot end of the second switch is same
When connect the output end of vehicle electricity input DC-DC module and the enable end EN of the charging management chip U1, the second switch
The cold end of pipe is grounded.
In above structure, the first switch tube uses triode Q1, the transmitting extremely first switch of the triode Q1
The input terminal of pipe, the output end of the current collection extremely first switch tube of the triode Q1, the base stage of the triode Q1 are first
The control terminal of switching tube.
In above structure, the second switch uses triode Q3, the current collection extremely second switch of the triode Q3
The hot end of pipe, the cold end of the transmitting extremely second switch of the triode Q3, the base stage of the triode Q3 are
The control terminal of second switch.
In above structure, the vehicle electricity based on vehicle power supply and super capacitor power switching circuit further include surpassing with described
The capacitor C10 of grade capacitor parallel connection.
In embodiments of the present invention, after vehicle electricity power down, system power supply can immediately be switched to super capacitor power supply, vehicle electricity
Switching between backup power source super capacitor does not need to increase additional device and circuit, does not need logic control bring yet
Uncertainty, therefore the circuit structure of the power switching circuit is simple, and circuit is stable.
Detailed description of the invention
Fig. 1 is the structure of the vehicle electricity based on vehicle power supply and super capacitor power switching circuit provided in an embodiment of the present invention
Figure.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention 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.
Fig. 1 shows the vehicle electricity provided in an embodiment of the present invention based on vehicle power supply and super capacitor power switching circuit
Structure, for ease of description, only parts related to embodiments of the present invention are shown.
A kind of vehicle electricity based on vehicle power supply and super capacitor power switching circuit connect the system of being powered 1, described to be based on vehicle
Carry power supply vehicle electricity include: with super capacitor power switching circuit
It is connected to power supply and the vehicle electricity input DC-DC module 2 being powered between system 1；
It is sequentially connected in series in the super capacitor 3 being powered between the input terminal of system and ground, inductance L1 and metal-oxide-semiconductor Q2；
The vehicle electricity based on vehicle power supply and super capacitor power switching circuit further include diode D1, resistance R11 and
Charging management chip U1；
The anode of the diode D1 connects the source electrode of the metal-oxide-semiconductor Q2, and the cathode of the diode D1 meets the metal-oxide-semiconductor Q2
Drain electrode, the resistance R11 is connected to the output end of vehicle electricity input DC-DC module 2 and between super capacitor 3, described
The input terminal IN and reset terminal RS of charging management chip U1 meet the both ends of the resistance R11, the charging management chip U1 respectively
Output end DR connect the grid of the metal-oxide-semiconductor Q2.
As an embodiment of the present invention, the vehicle electricity based on vehicle power supply further includes with super capacitor power switching circuit
Overvoltage protective module, the overvoltage protective module include:
Controllable accurate source of stable pressure U2, resistance R1, resistance R16, first switch tube 4 and second switch 5；
The input of the first switch tube 4 terminates the resistance R11, the output termination of the first switch tube 4 described the
The control terminal of two switching tubes 5, the control of the first switch tube 4 terminate the cathode of the controllable accurate source of stable pressure U2, the electricity
Resistance R16 and resistance R1 be serially connected between the input terminal of the first switch tube 4 and the anode of controllable accurate source of stable pressure U2, it is described can
The reference pole of control precision voltage regulator U2 connects the public connecting end of the resistance R16 and resistance R1, the height electricity of the second switch 5
Position end connects the output end of vehicle electricity input DC-DC module and the enable end EN of the charging management chip U1 simultaneously, and described the
The cold end of two switching tubes 5 is grounded.
As an embodiment of the present invention, the first switch tube 4 uses triode Q1, and the transmitting of the triode Q1 is extremely
The input terminal of first switch tube 4, the output end of the current collection of the triode Q1 extremely first switch tube 4, the triode Q1's
Base stage is the control terminal of first switch tube 4.
As an embodiment of the present invention, the second switch 5 uses triode Q3, and the current collection of the triode Q3 is extremely
The hot end of second switch 5, the cold end of the transmitting extremely second switch 5 of the triode Q3, the triode
The base stage of Q3 is the control terminal of second switch 5.
As an embodiment of the present invention, the vehicle electricity based on vehicle power supply further includes with super capacitor power switching circuit
The capacitor C10 in parallel with the super capacitor 3.
The purpose that overvoltage protective module is arranged is: super capacitor 3 must operate in specified voltage range, so necessary
The voltage of super capacitor 3 is protected.Protection sets super electricity by resistance R1, resistance R16, controllable accurate source of stable pressure U2
The voltage for holding 3 both ends, when voltage is more than setting value, the KA of controllable accurate source of stable pressure U2 can be connected, thus triode Q1
It can be connected, the voltage of CHAR_EN is just input voltage, such triode Q3 will be connected, and then charging management chip U1 makes
Energy end EN ground connection, charging management chip U1 stop working, to achieve the purpose that the both end voltage for protecting super capacitor 3.
Working principle:
After vehicle electricity input equipment carries out DC-DC conversion, mono- tunnel VIN powers directly to the system that is powered 1, gives super electricity all the way
Hold 3 chargings, and the Vcap of super capacitor 3 directly connects on VIN, serves as VIN persistently to quilt by Vcap after vehicle electricity power down
Power supply system 1 is powered.Emphasis in this scheme is that we charge to the cathode Vcap- of super capacitor 3, even if being switched in this way
When super capacitor electricity be not full of, the voltage of the positive Vcap of super capacitor 3 is equal with the voltage of VIN always (opposite
In GND), thus system will not just it start to work when the electricity of super capacitor 3 is charged to system minimum.
In normal work, VIN a part charges to the Vcap of super capacitor 3, opens to the power supply of system 1, a part is powered
When beginning to charge, the voltage of the Vcap- of super capacitor 3 and the voltage of Vcap are equal, with lasting charging, final Vcap-'s
Almost equal when the voltage of voltage and GND, the energy of super capacitor 3 reaches maximum at this time；It is super when vehicle electricity power down
Capacitor 3 continues to power to the system that is powered 1 by diode D1, to achieve the purpose that the storage for protecting system-critical data.
As an embodiment of the present invention, charging management chip U1 uses MP24894GJ chip.
Specifically:
Charging management system of the MP24894GJ chip as super capacitor 3 is used in the embodiment of the present invention, VIN power supply is
It is connected on the DC-DC of system power supply to system power supply.Chip is by the voltage (200mV) between pin IN and RS, by interior
The error amplifier in portion exports PWM waveform to control DR pin to control opening and turning off for external metal-oxide-semiconductor Q2.
Charging:
When the voltage between IN and RS is less than 200mV (V=R11*Io), DR exports PWM waveform, opens metal-oxide-semiconductor Q2, DC_
IN voltage charges to super capacitor 3 by inductance L1, when electric current Io is greater than 200Mv/R11, the PWM wave of DR output
Shape is closed, and inductance L1 carries out afterflow charging by resistance R11, super capacitor 3, and when Io electric current is less than 200Mv/R11, DR is again
It exports PWM waveform and opens metal-oxide-semiconductor Q2, charge again, by duplicate dynamic adjustment process, can finally reach constant current to super
Grade capacitor 3 charges.
Electric discharge:
After vehicle electricity power down because Vcap be connect by resistance with VIN, even if after vehicle electricity power down,
Vcap can immediately pass through resistance R11 to VIN continued power, can continue to the work of system.Discharge loop are as follows: Vcap → R11
→ VIN → system → GND → D1 → L1 → super capacitor → Vcap.
In embodiments of the present invention, after vehicle electricity power down, system power supply can immediately be switched to super capacitor power supply, vehicle electricity
Switching between backup power source super capacitor does not need to increase additional device and circuit, does not need logic control bring yet
Uncertainty, therefore the circuit structure of the power switching circuit is simple, and circuit is stable.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (4)
1. a kind of vehicle electricity based on vehicle power supply and super capacitor power switching circuit, connect the system of being powered, which is characterized in that institute
State the vehicle electricity based on vehicle power supply includes: with super capacitor power switching circuit
It is connected to power supply and the vehicle electricity input DC-DC module being powered between system；
It is sequentially connected in series in the super capacitor being powered between the input terminal of system and ground, inductance L1 and metal-oxide-semiconductor Q2；
The vehicle electricity based on vehicle power supply and super capacitor power switching circuit further include diode D1, resistance R11 and charging
Managing chip U1；
The anode of the diode D1 connects the source electrode of the metal-oxide-semiconductor Q2, and the cathode of the diode D1 connects the leakage of the metal-oxide-semiconductor Q2
Pole, the resistance R11 are connected between the output end and super capacitor of the vehicle electricity input DC-DC module, the Charge Management
The input terminal IN and reset terminal RS of chip U1 connect the both ends of the resistance R11, the output end of the charging management chip U1 respectively
DR connects the grid of the metal-oxide-semiconductor Q2；
The vehicle electricity based on vehicle power supply and super capacitor power switching circuit further include overvoltage protective module, and the over-voltage is protected
Protecting module includes:
Controllable accurate source of stable pressure U2, resistance R1, resistance R16, first switch tube and second switch；
The input of the first switch tube terminates the reset terminal RS of the charging management chip U1, the output of the first switch tube
The control terminal of the second switch is terminated, the control of the first switch tube terminates the yin of the controllable accurate source of stable pressure U2
Pole, the resistance R16 and resistance R1 be serially connected in the first switch tube input terminal and controllable accurate source of stable pressure U2 anode it
Between, the reference pole of the controllable accurate source of stable pressure U2 connects the public connecting end of the resistance R16 and resistance R1, the second switch
The hot end of pipe connects the output end of the vehicle electricity input DC-DC module and the enable end of the charging management chip U1 simultaneously
EN, the cold end ground connection of the second switch.
2. the vehicle electricity based on vehicle power supply and super capacitor power switching circuit as described in claim 1, which is characterized in that institute
First switch tube is stated using triode Q1, the input terminal of the transmitting extremely first switch tube of the triode Q1, the triode
The output end of the current collection of Q1 extremely first switch tube, the base stage of the triode Q1 are the control terminal of first switch tube.
3. the vehicle electricity based on vehicle power supply and super capacitor power switching circuit as described in claim 1, which is characterized in that institute
Second switch is stated using triode Q3, the hot end of the current collection extremely second switch of the triode Q3, three pole
The cold end of the transmitting extremely second switch of pipe Q3, the base stage of the triode Q3 are the control terminal of second switch.
4. the vehicle electricity based on vehicle power supply and super capacitor power switching circuit as described in claim 1, which is characterized in that institute
It further includes the capacitor C10 in parallel with the super capacitor that the vehicle electricity based on vehicle power supply, which is stated, with super capacitor power switching circuit.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2016/104552 WO2018082007A1 (en) | 2016-11-04 | 2016-11-04 | Circuit for power supply switching between vehicle battery and supercapacitor, based on on-board power source |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106537726A CN106537726A (en) | 2017-03-22 |
| CN106537726B true CN106537726B (en) | 2019-05-28 |
Family
ID=58335847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680001301.3A Active CN106537726B (en) | 2016-11-04 | 2016-11-04 | A switching circuit for vehicle power supply and super capacitor power supply based on vehicle power supply |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106537726B (en) |
| WO (1) | WO2018082007A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109412253A (en) * | 2018-09-27 | 2019-03-01 | 北京艾博唯科技有限公司 | The electric supply system of uninterruptible power supply, control system and vehicle-mounted board |
| CN111231866A (en) * | 2019-12-31 | 2020-06-05 | 武汉长江通信智联技术有限公司 | Vehicle-mounted power supply circuit and method for realizing power failure protection function based on super capacitor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7786620B2 (en) * | 2008-02-15 | 2010-08-31 | Honeywell International Inc. | Battery supplementing super capacitor energy storage charge and discharge converter |
| CN102904329A (en) * | 2011-07-29 | 2013-01-30 | 富泰华工业（深圳）有限公司 | Power supply management circuit |
| CN103701196A (en) * | 2013-12-13 | 2014-04-02 | 大连现代高技术集团有限公司 | A vehicle power supply capable of compensating for instantaneous power loss of vehicle equipment |
| CN204216598U (en) * | 2014-09-28 | 2015-03-18 | 湖南森泰节能科技有限公司 | Battery charging and discharging device and management circuit |
| CN104813562A (en) * | 2012-10-03 | 2015-07-29 | 法雷奥电机控制系统公司 | Power network for motor vehicles |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6969972B2 (en) * | 2003-06-06 | 2005-11-29 | Texas Instruments Incorporated | Architecture for switching between an external and internal power source |
| CN102364811B (en) * | 2011-10-20 | 2013-10-23 | 江苏大学 | A nickel-carbon supercapacitor activation method and device |
| CN104539042B (en) * | 2014-12-11 | 2017-01-04 | 华为技术有限公司 | A kind of uninterruptible power system |
| CN205092642U (en) * | 2015-11-21 | 2016-03-16 | 黄梁梁 | Charge and discharge of capacitor control circuit |
-
2016
- 2016-11-04 CN CN201680001301.3A patent/CN106537726B/en active Active
- 2016-11-04 WO PCT/CN2016/104552 patent/WO2018082007A1/en not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7786620B2 (en) * | 2008-02-15 | 2010-08-31 | Honeywell International Inc. | Battery supplementing super capacitor energy storage charge and discharge converter |
| CN102904329A (en) * | 2011-07-29 | 2013-01-30 | 富泰华工业（深圳）有限公司 | Power supply management circuit |
| CN104813562A (en) * | 2012-10-03 | 2015-07-29 | 法雷奥电机控制系统公司 | Power network for motor vehicles |
| CN103701196A (en) * | 2013-12-13 | 2014-04-02 | 大连现代高技术集团有限公司 | A vehicle power supply capable of compensating for instantaneous power loss of vehicle equipment |
| CN204216598U (en) * | 2014-09-28 | 2015-03-18 | 湖南森泰节能科技有限公司 | Battery charging and discharging device and management circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018082007A1 (en) | 2018-05-11 |
| CN106537726A (en) | 2017-03-22 |
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