CN103795115B - A kind of portable car-mounted stand-by power supply - Google Patents

A kind of portable car-mounted stand-by power supply Download PDF

Info

Publication number
CN103795115B
CN103795115B CN201410038944.8A CN201410038944A CN103795115B CN 103795115 B CN103795115 B CN 103795115B CN 201410038944 A CN201410038944 A CN 201410038944A CN 103795115 B CN103795115 B CN 103795115B
Authority
CN
China
Prior art keywords
transistor
lithium battery
interchanger
power supply
output
Prior art date
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.)
Active
Application number
CN201410038944.8A
Other languages
Chinese (zh)
Other versions
CN103795115A (en
Inventor
罗玉涛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
South China University of Technology SCUT
Original Assignee
South China University of Technology SCUT
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by South China University of Technology SCUT filed Critical South China University of Technology SCUT
Priority to CN201410038944.8A priority Critical patent/CN103795115B/en
Publication of CN103795115A publication Critical patent/CN103795115A/en
Application granted granted Critical
Publication of CN103795115B publication Critical patent/CN103795115B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems

Abstract

The invention discloses a kind of portable car-mounted stand-by power supply, comprise lithium battery, switch, super capacitor, the first interchanger, the 2nd DC/DC module, voltage sample link and controller; The input of the first interchanger is be connected with charge power supply, and the output of the first interchanger is connected with lithium battery; Lithium battery is connected with super capacitor by switch, and super capacitor is connected with the input of the 2nd DC/DC module, and the output of the 2nd DC/DC module is that the output interface of stand-by power supply is connected with vehicle startup system; Controller respectively with the first interchanger and the 2nd DC/DC model calling; Controller is also detected by voltage sample link and is connected with the output of the 2nd DC/DC module.The present invention is by lithium battery and super capacitor as electricity memory cell, and because stand-by power supply of the present invention have employed the life-span is long and power density is high super capacitor and the little lithium battery of volume, therefore stand-by power supply of the present invention has the advantage that the life-span is grown and volume is little.

Description

A kind of portable car-mounted stand-by power supply
Technical field
The present invention relates to DC power supply field, particularly the portable car-mounted stand-by power supply of one.
Background technology
Along with the raising of China's economic level, automobile enters average family, as the daily vehicles of one.In automobile use procedure, often exist because storage battery power shortage or wintry weather cold cause automobile starting difficulty even can not start, bring larger trouble.Portable car-mounted stand-by power supply can provide startup power supply for automobile, in case of emergency, stand-by power supply can be connected to the start up system of automobile, thus starts automobile.In addition, stand-by power supply can also be mobile power supply equipment, solve because of open air drive a vehicle for a long time make mobile device can not obtain in time charge problem.At present, portable car-mounted stand-by power supply major part on market adopts lead acid accumulator to power, when automobile starting, battery needs to bear larger starting current, battery life is caused to reduce, therefore also the having a greatly reduced quality with regard to performance of battery, and it is comparatively large to meet the battery volume that automobile directly starts, and price is also more expensive.
Summary of the invention
The shortcoming that the object of the invention is to overcome prior art, with not enough, provide a kind of long service life and the little portable car-mounted stand-by power supply of volume, enables automobile carry out emergency starting when original automobile storage battery cisco unity malfunction.
Object of the present invention is achieved through the following technical solutions: a kind of portable car-mounted stand-by power supply, comprises lithium battery, super capacitor, the first interchanger, the 2nd DC/DC module, voltage sample link and controller;
The input of described first interchanger is that the charging inlet of stand-by power supply is connected with charge power supply, and the output of described first interchanger is connected with lithium battery; Described lithium battery is connected with super capacitor by switch, and described super capacitor is connected with the input of the 2nd DC/DC module, and the output of described 2nd DC/DC module is that the output interface of stand-by power supply is connected with vehicle startup system; Described controller respectively with the first interchanger and the 2nd DC/DC model calling, for a DC/DC module and the 2nd DC/DC module provide control signal; Controller is also detected by voltage sample link and is connected with the output of the 2nd DC/DC module, is detected the output voltage of the 2nd DC/DC module output by voltage sample link.
Preferably, described first interchanger is a DC/DC module, and a described DC/DC module is buck circuit, and the voltage that charge power supply provides is by supplying lithium cell charging after buck circuit step-down, and described buck circuit comprises transistor T 1, diode D 1and inductance L 1;
Described transistor T 1collector electrode be connected with the output plus terminal of charge power supply; Described transistor T 1emitter pass through inductance L 1be connected with lithium battery anode, the negative terminal of described lithium battery is connected and ground connection with the output negative terminal of charge power supply;
Described diode D 1negative electrode and transistor T 1emitter connect, described diode D 1plus earth; Described transistor T 1base stage be connected with controller.
Preferably, described 2nd DC/DC module is booster circuit, and described booster circuit comprises transistor T 2, diode D 2, inductance L 2with electric capacity C 2;
Inductance L is passed through in one end that described super capacitor is connected with switch 2with transistor T 2collector electrode connects, the negative terminal of another termination lithium battery of described super capacitor, described transistor T 2collector electrode and diode D 2anode connect; Described diode D 2negative electrode connect electric capacity C 2one end, as the output plus terminal of the 2nd DC/DC module, be connected with the input anode of vehicle startup system; Described electric capacity C 2other end ground connection, as the output negative terminal of the 2nd DC/DC module, be connected with the input negative terminal of vehicle startup system;
Described transistor T 2emitter connect the negative terminal of lithium battery; Described transistor T 2base stage be connected with controller.
Further, described voltage sample link comprises resistance R 1with resistance R 2, diode D in described 2nd DC/DC module 2negative electrode contact resistance R successively 1with resistance R 2rear ground connection, described resistance R 1with resistance R 2the one end connected is connected with controller.
Preferably, also comprise the second interchanger be connected with lithium battery, described lithium battery is connected with external equipment, for external equipment is powered by described second interchanger.
Further, described second interchanger is booster circuit, comprises transistor T 3, diode D 3, inductance L 3with electric capacity C 3;
Described transistor T 3collector electrode pass through inductance L 3be connected with the anode of lithium battery, described transistor T 3collector electrode and diode D 3anode connect; Diode D 3negative electrode connect electric capacity C 3one end, as the output plus terminal of the second interchanger, be connected with the input anode of external equipment, described electric capacity C 3the other end be connected and ground connection with the negative terminal of lithium battery, as the output negative terminal of the second interchanger, be connected with the input negative terminal of external equipment;
Described transistor T 3emitter and ground connection;
Described transistor T 3base stage be connected with controller.
Further, described second interchanger is reduction voltage circuit, comprises transistor T 31, diode D 31, inductance L 31with electric capacity C 31;
Described transistor T 31collector electrode be connected with the anode of lithium battery;
Described transistor T 31emitter respectively with diode D 31negative electrode and inductance L 31one end connect, described inductance L 31the other end as the output plus terminal of the second interchanger, be connected with the input anode of external equipment; Described diode D 31anode connect the negative terminal of lithium battery and ground connection, as the output negative terminal of the second interchanger, be connected with the input negative terminal of external equipment;
Described transistor T 31base stage be connected with controller.
Further, described second interchanger is reduction voltage circuit, comprises voltage stabilizing chip 7805, and the described input of voltage stabilizing chip 7805 is connected with the anode of lithium battery, the output of described voltage stabilizing chip 7805, as the output plus terminal of the second interchanger, is connected with the input anode of external equipment; The negative terminal of the ground connection termination lithium battery of described 7805 and ground connection, as the output negative terminal of the second interchanger, be connected with the input negative terminal of external equipment.
Further, described second interchanger is DC/AC inverter circuit, and described DC/AC inverter circuit comprises transistor T 33, transistor T 34, diode D 33, diode D 34with centre-tapped transformer T r;
Described transistor T 33with transistor T 34collector electrode respectively with centre-tapped transformer T rtwo input ports connect, described transistor T 33collector electrode by diode D 33be connected with its emitter, described transistor T 34collector electrode by diode D 34be connected with its emitter, described transistor T 33emitter and transistor T 34emitter be all connected and ground connection with the negative terminal of lithium battery; Described transistor T 33base stage and transistor T 34base stage respectively with control connection;
Described centre-tapped transformer T rcentre cap be connected with the anode of lithium battery; Described centre-tapped transformer T routput be the output of the second interchanger, be connected with the input of external equipment.
Preferably, the described charge power supply for lithium cell charging is vehicle-mounted cigarette lighter.
Wherein operation principle of the present invention is as follows:
Stand-by power supply of the present invention before the use, first charge power supply outside on connecting on charging inlet, charge power supply is that lithium battery in stand-by power supply charges by the first interchanger, the vehicle-mounted cigarette lighter that wherein can automobile be utilized to carry when automobile normal running as charge power supply for lithium battery charges.When user is when storage battery electricity exhausts or the lower storage battery of winter temperature can not reach startup demand, the closed switch be connected between lithium battery and super capacitor, lithium battery is made to be super capacitor charging, after super capacitor charging complete, cut-off switch, isolation lithium battery, makes super capacitor separately for vehicle startup system is powered, and ensures the normal startup of vehicle startup system.After the present invention second interchanger output interface connects external equipment in addition, for external equipment carries out emergency service after lithium battery carries out voltage transformation by the second interchanger.
The present invention has following advantage and effect relative to prior art:
(1) in portable car-mounted stand-by power supply of the present invention, by lithium battery and super capacitor as electricity memory cell, when automobile carry storage battery electricity exhaust or the lower storage battery of winter temperature can not reach startup demand time, the switch of lithium battery and super capacitor is connected in closed stand-by power supply, lithium electrical measurement is made to be super capacitor charging, after super capacitor is full of electricity, cut-off switch, super capacitor by the 2nd DC/DC module separately for vehicle startup system provides larger starting current.Larger starting current can be provided due to super capacitor and there is life-span long advantage, therefore can avoid the defect of battery life end under big current, extend the useful life of stand-by power supply of the present invention.In addition because stand-by power supply of the present invention have employed the lithium battery of high power density super capacitor and small volume, therefore stand-by power supply of the present invention also has the better and advantage that volume is less of performance.
(2) controller of stand-by power supply of the present invention is connected with the output of the 2nd DC/DC module by voltage sample link, then the size of real-time detection the 2nd DC/DC module output voltage is transistor T according to the adjustment controller that the size of the 2nd DC/DC module output voltage is real-time 2the duty ratio of the pwm control signal provided, make stand-by power supply of the present invention can the direct voltage of stable output to vehicle startup system, ensure that vehicle startup system can start normally.
(3) lithium battery of stand-by power supply of the present invention also connects external equipment by the second interchanger, therefore the mobile device that the present invention can use for user charges timely, solution is driven a vehicle for a long time because of open air and is made mobile device can not obtain the problem of charging in time, brings great convenience to user.The present invention can realize powering to the external equipment of different voltage requirements by the second interchanger that choice for use is different in addition, as when the second interchanger is DC/AC inverter circuit in the present invention, 220V alternating current can be provided to external equipment.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the portable car-mounted stand-by power supply of the present invention.
Fig. 2 is circuit theory diagrams when the second interchanger is booster circuit in the portable car-mounted stand-by power supply of the present invention.
Fig. 3 is circuit theory diagrams when the second interchanger is reduction voltage circuit in the portable car-mounted stand-by power supply of the present invention.
Fig. 4 is circuit theory diagrams when the second interchanger is voltage stabilizing chip in the portable car-mounted stand-by power supply of the present invention.
Fig. 5 is circuit theory diagrams when the second interchanger is inverter circuit in the portable car-mounted stand-by power supply of the present invention.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment 1
As shown in Figure 1, present embodiment discloses a kind of portable car-mounted stand-by power supply, comprise lithium battery 2, switch 3, super capacitor 4, first interchanger 1, the 2nd DC/DC module 5, voltage sample link, controller 9 and the second interchanger 7;
The input of the first interchanger 1 is that the charging inlet 10 of stand-by power supply is connected with charge power supply, and the output of the first interchanger 1 is connected with lithium battery 2; Lithium battery 2 is connected with super capacitor 4 by switch 3, super capacitor 4 is connected with the input of the 2nd DC/DC module 5, the output of the 2nd DC/DC module is that the output interface 6 of stand-by power supply is connected with vehicle startup system, super capacitor 4 by the 2nd DC/DC module by electricity transmission to vehicle startup system; The input of the second interchanger 7 is connected with lithium battery, and lithium battery is connected with external equipment by the second interchanger, is the power supplies such as the mobile device that external user is conventional.Controller 9 is connected with the first interchanger 1, the 2nd DC/DC module 5 and the second interchanger 7 respectively, is respectively the first interchanger 1, the 2nd DC/DC module 5 and the second interchanger 7 and provides control signal; Controller 9 is also detected by voltage sample link and is connected with the output of the 2nd DC/DC module 5, is detected the output voltage of the 2nd DC/DC module 5 output by voltage sample link.
The first interchanger wherein in the present embodiment is a DC/DC module, and charge power supply is 12V direct current vehicle-mounted cigarette lighter, provides the direct voltage of 12V; When needs charge to lithium battery 2, charge power supply is connected with charging inlet 10.The first interchanger 1 in certain the present embodiment also can be AC/DC module, and now charge power supply can be alternating current charging power supply.
In the present embodiment when switch 3 is in disconnection, first charge power supply is that lithium battery 2 charges by a DC/DC module, when automobile carry storage battery electricity exhaust or the lower storage battery of winter temperature can not reach startup demand time, the switch 3 of lithium battery 2 and super capacitor 4 is connected in closed stand-by power supply, lithium battery 2 discharges and charges for super capacitor 4, when super capacitor 4 is full of cut-off switch 3 a little, to isolate lithium battery 2, then super capacitor 4 starts electric discharge, the voltage that super capacitor 4 exports is sent to vehicle startup system by the 2nd DC/DC module 5, can normally start to make vehicle startup system.
In the present embodiment, stand-by power supply is used for starting the vehicle startup system of general car, because general car starts the voltage only needing 12V, therefore have employed the lithium battery 2 of 1 joint 3.7V in the present embodiment, as shown in Figure 2, one DC/DC module is buck circuit, the voltage that the DC charging power supply of 12V provides charges by supplying lithium battery 2 after buck circuit step-down, and wherein buck circuit comprises transistor T 1, diode D 1and inductance L 1.Transistor T 1collector electrode be connected with the output plus terminal of charge power supply; Transistor T 1emitter pass through inductance L 1be connected with lithium battery anode, the negative terminal of lithium battery is connected and ground connection with the output negative terminal of charge power supply; Diode D 1negative electrode and transistor T 1emitter connect, diode D 1plus earth; Transistor T 1base stage be connected with controller, provide pwm control signal to transistor T by controller 1.When the switch 3 be connected with lithium battery is in off-state, vehicle-mounted cigarette lighter on charging inlet 10 connects, the direct voltage of the 12V that vehicle-mounted cigarette lighter exports is by charging to lithium battery 2 after buck circuit step-down.In lithium battery 2 charging process, the pass before the input voltage of a DC/DC module and output voltage is:
V o1＝q 1V i；
Q 1for controller 9 is transistor T 1the duty ratio of the pwm control signal provided;
q 1 = V o 1 V i ;
Wherein V ifor the voltage of buck circuit input, i.e. the voltage of charge power supply output, V o1for the voltage exported after buck circuit step-down, in the present embodiment V ifor 12V, V o1for 5V, therefore the present embodiment middle controller 9 is supplied to transistor T 1pWM controller 9 be transistor T 1duty ratio is provided to be the duty ratio q of pwm signal signal 1be 512.
The voltage that in the present embodiment, super capacitor 4 exports needs vehicle startup system just can be made to start after boosting, and therefore in the present embodiment, the 2nd DC/DC module 5 is booster circuit, and this booster circuit comprises transistor T 2, diode D 2, inductance L 2with electric capacity C 2; Inductance L is passed through in one end that super capacitor is connected with switch 2with transistor T 2collector electrode connects, super capacitor other end ground connection, transistor T 2collector electrode and diode D 2anode connect; Diode D 2negative electrode connect electric capacity C 2one end, as the output plus terminal of the 2nd DC/DC module 5, be connected with the input anode of vehicle startup system; Electric capacity C 2another termination ground connection, as the output negative terminal of the 2nd DC/DC module 5, be connected with the input negative terminal of vehicle startup system; Transistor T 2emitter connect the negative terminal of lithium battery; Transistor T 2base stage be connected with controller;
Voltage sample link comprises resistance R 1with resistance R 2, diode D in the 2nd DC/DC module 5 2negative electrode contact resistance R successively 1with resistance R 2rear ground connection, resistance R 1with resistance R 2the one end connected is connected with controller 9.Controller 9 is according to resistance R 2on voltage can detect the output voltage of the 2nd DC/DC module.
When automobile needs emergency starting, first Closing Switch 3, now charged lithium battery 2 charges for super capacitor 4, after super capacitor 4 is full of electricity, cut-off switch, super capacitor 4 starts electric discharge, and its voltage exported is input to vehicle startup system, for vehicle startup system provides the big current needed for startup after the 2nd DC/DC module 5 is boosted.Larger starting current can be provided due to super capacitor 4 and there is life-span long advantage, therefore can avoid the reduction of battery life under big current, extend the useful life of the present embodiment stand-by power supply.Wherein in the process of super capacitor 4 output voltage, the pass that the input voltage of the 2nd DC/DC module 5 and output voltage meet is:
V o = 1 1 - q 2 V c ;
Q 2for controller 9 is transistor T 2the duty ratio of the pwm control signal provided;
q 2 = 1 - V c V 0 ;
Wherein V cfor the output voltage of super capacitor 4, i.e. the input voltage of the 2nd DC/DC module 5, V oit is the output voltage of the 2nd DC/DC module 5; Because super capacitor 4 is in discharge process, its voltage is along with the minimizing of capacity, and both end voltage also can decline, and in order to keep output voltage constant, then the multiple that boosts also needs to change, i.e. duty ratio q 2change.The present embodiment middle controller 9 is by resistance R in voltage sample link 2on voltage detecting go out the change of the output voltage of the 2nd DC/DC module 5, then according to the adjustment duty ratio q that the change of the 2nd DC/DC module 5 output voltage is real-time 2value, to obtain stable 12V VD supply vehicle startup system, ensure that vehicle startup system can start normally.
Owing to have employed the lithium battery 2 of a joint 3.7V in the present embodiment, the voltage that it can provide does not reach the 5V voltage required for external equipment, therefore as shown in Figure 2, the second converter 7 for powering for the external equipment such as mobile phone, MP3 in the present embodiment is booster circuit, and this booster circuit comprises transistor T 3, diode D 3, inductance L 3with electric capacity C 3; Transistor T 3collector electrode pass through inductance L 3be connected with the anode of lithium battery, transistor T 3collector electrode and diode D 3anode connect; Diode D 3negative electrode connect electric capacity C 3one end, as the output plus terminal of the second interchanger, be connected with the input anode of external equipment, electric capacity C 3the other end be connected and ground connection with the negative terminal of lithium battery, as second exchange output negative terminal, be connected with the input negative terminal of external equipment; Wherein the output of the second interchanger 7 can make USB interface pattern, charges with USB data line easy to use.Transistor T 3emitter be connected and ground connection with the negative terminal of lithium battery; Transistor T 3base stage be connected with controller, provide pwm control signal by controller.When the output of the second interchanger 7 connects external equipment, lithium battery 2 by the second interchanger 7 for external equipment is powered.Wherein lithium battery 2 for external equipment power time, the input voltage in the second interchanger 7 and the pass of output voltage are:
V o 2 = 1 1 - q 3 V i 1 ;
Wherein q 3for controller 9 is transistor T 3the duty ratio of the pwm control signal provided;
q 3 = 1 - V i 1 V o 2 ;
Wherein V i1for the output voltage of lithium battery 2, i.e. the input voltage of the second interchanger 7, V o2be the output voltage of the second interchanger 7, wherein V in the present embodiment o2for 5V, it is the supply voltage that common mobile device is conventional.
Embodiment 2
Present embodiment discloses a kind of portable car-mounted stand-by power supply, difference from Example 1 is, the stand-by power supply of the present embodiment is used for starting the vehicle startup system of lorry, startup due to lorry generally needs the voltage of 24V, therefore as shown in Figure 3, the lithium battery 2 that have employed 2 joint 3.7V in the present embodiment is connected.
Wherein the present embodiment stand-by power supply and embodiment 1 are except the quantity of the battery used is different, and their difference is only the second interchanger 7 part, the circuit composition structure of other part and annexation all identical with embodiment 1.
The voltage that can provide due to two joint 3.7V lithium batteries 2 has exceeded the 5V voltage required for common mobile device, therefore in this situation, adopt in the present embodiment be connected with lithium battery 2 for providing voltage to be reduction voltage circuit to the second interchanger 7 of external equipment, as shown in Figure 3, this reduction voltage circuit comprises transistor T 31, diode D 31, inductance L 31with electric capacity C 31; Transistor T 31collector electrode be connected with the anode of lithium battery; Transistor T 31emitter respectively with diode D 31negative electrode and inductance L 31one end connect, inductance L 31the other end as the output plus terminal of the second interchanger, be connected with the input anode of external equipment; Diode D 31anode lithium battery negative terminal connect and ground connection, as the output negative terminal of the second interchanger 7, is connected with the input negative terminal of external equipment, wherein the second interchanger output as stand-by power supply connection external equipment the second output interface 8; Transistor T 31base stage be connected with controller.Wherein lithium battery 2 for external equipment power time, in the second interchanger 7, the pass of input voltage and output voltage is:
V′ o2＝q 31V′ i1；
Wherein q 31for controller 9 is transistor T 31the duty ratio of the pwm control signal provided;
q 31 = V o 2 ′ V i 1 ′ ;
Wherein V ' i1for the output voltage of lithium battery, i.e. the input power of the second interchanger 7, V ' o2be the output voltage of the second interchanger 7, wherein V ' in the present embodiment o2for 5V, it is the supply voltage that common mobile device is conventional.
In addition because lithium battery in the present embodiment 2 is 2 joint 3.7V's, and the vehicle startup system of lorry needs the voltage of 24V, therefore the present embodiment middle controller 9 size of exporting to the pwm control signal duty ratio of the 2nd DC/DC module 5 adjusts, by the output voltage stabilization of the 2nd DC/DC module 5 on direct current 24V according to relation between the input voltage of duty ratio disclosed in embodiment 1 and the 2nd DC/DC module 5 and output voltage.
Embodiment 3
Present embodiment discloses a kind of portable car-mounted stand-by power supply, the present embodiment difference from Example 1 is, the stand-by power supply of the present embodiment is used for starting the vehicle startup system of lorry, startup due to lorry generally needs the voltage of 24V, therefore as shown in Figure 4, the lithium battery 2 that have employed 3 joint 3.2V in the present embodiment is connected.
Wherein the present embodiment and embodiment 1 are except the quantity of the battery used is different, and their difference is only the second interchanger 7 part, the circuit composition structure of other part and annexation all identical with embodiment 1.The second interchanger 7 wherein in the present embodiment comprises voltage stabilizing chip 7805, and the input of voltage stabilizing chip 7805 is connected with the anode of lithium battery, and the output of voltage stabilizing chip 7805, as the output plus terminal of the second interchanger 7, is connected with the input anode of external equipment; The negative terminal of the earth terminal lithium battery of 7805 connects and ground connection, as the output negative terminal of the second interchanger 7, is connected with the input negative terminal of external equipment.The present embodiment is by the 5V direct voltage of voltage stabilizing chip 7805 stable output.
In addition because lithium battery in the present embodiment 2 is 3 joint 3.2V's, and the vehicle startup system of lorry needs the voltage of 24V, therefore the same manner as in Example 2, the size that the present embodiment middle controller 9 exports to the pwm control signal duty ratio of the 2nd DC/DC module 5 adjusts, by the output voltage stabilization of the 2nd DC/DC module 5 on direct current 24V according to relation between the input voltage of duty ratio disclosed in embodiment 1 and the 2nd DC/DC module 5 and output voltage equally.
Embodiment 4
Present embodiment discloses a kind of portable car-mounted stand-by power supply, the present embodiment adopts the lithium battery of three joint 3.2V in the same manner as in Example 3, and wherein the difference of the present embodiment and embodiment 3 is only the second interchanger 7 part.
Second interchanger 7 of the present embodiment is DC/AC inverter circuit, and DC/AC inverter circuit comprises transistor T 33, transistor T 34, diode D 33, diode D 34with centre-tapped transformer T r; Transistor T 33with transistor T 34collector electrode respectively with centre-tapped transformer T rtwo input ports connect, transistor T 33collector electrode by diode D 33be connected with its emitter, transistor T 34collector electrode by diode D 34be connected with its emitter, transistor T 33emitter and transistor T 34emitter be all connected and ground connection with the negative terminal of lithium battery; Transistor T 33base stage and transistor T 34base stage respectively with control connection; Centre-tapped transformer T rcentre cap be connected with the anode of lithium battery; Centre-tapped transformer T routput be the output of the second interchanger, be connected with the input of external equipment, for external equipment provides 220V alternating current.Wherein the present embodiment is by controller 9 couples of transistor T 33with transistor T 34carry out driven, at transistor T 33during driving, there is positive half cycle current by centre-tapped transformer T rwinding, at transistor T 34during driving, there is the electric current of negative half period by centre-tapped transformer T rwinding, thus provide 220V alternating current at output port.
Because lithium battery in the present embodiment is 3 joint 3.2V's, and the vehicle startup system of lorry needs the voltage of 24V, therefore the same with 3 with embodiment 2, the size that the present embodiment middle controller 9 exports to the pwm control signal duty ratio of the 2nd DC/DC module 5 adjusts, by the output voltage stabilization of the 2nd DC/DC module 5 on direct current 24V according to relation between the input voltage of duty ratio disclosed in embodiment 1 and the 2nd DC/DC module and output voltage equally.
Above-described embodiment is the present invention's preferably execution mode, but embodiments of the present invention are not restricted to the described embodiments, the voltage swing that such as, in the present invention the second interchanger provides according to lithium battery and the size of external equipment required voltage select the circuit adopting boosting or step-down, or also can connect boosting and step-down two kinds of circuit on lithium battery simultaneously, use to be supplied to the different external equipment of various voltage swing demand.In the present invention, the voltage of lithium battery quantity required for actual vehicle startup system is selected in addition.Change, the modification done under other any does not deviate from Spirit Essence of the present invention and principle, substitute, combine, simplify, all should be the substitute mode of equivalence, be included within protection scope of the present invention.

Claims (10)

1. a portable car-mounted stand-by power supply, comprises lithium battery, it is characterized in that, also comprises switch, super capacitor, the first interchanger, the 2nd DC/DC module, voltage sample link and controller;
The input of described first interchanger is that the charging inlet of stand-by power supply is connected with charge power supply, and the output of described first interchanger is connected with lithium battery; Described lithium battery is connected with super capacitor by switch, and described super capacitor is connected with the input of the 2nd DC/DC module, and the output of described 2nd DC/DC module is that the output interface of stand-by power supply is connected with vehicle startup system; Described controller respectively with the first interchanger and the 2nd DC/DC model calling, for a DC/DC module and the 2nd DC/DC module provide control signal; Controller is also detected by voltage sample link and is connected with the output of the 2nd DC/DC module, is detected the output voltage of the 2nd DC/DC module output by voltage sample link;
The closed switch be connected between lithium battery and super capacitor, makes lithium battery be super capacitor charging, and after super capacitor charging complete, cut-off switch, isolation lithium battery, makes super capacitor separately for vehicle startup system is powered.
2. portable car-mounted stand-by power supply according to claim 1, it is characterized in that, described first interchanger is a DC/DC module, a described DC/DC module is buck circuit, the voltage that charge power supply provides is by supplying lithium cell charging after buck circuit step-down, and described buck circuit comprises transistor T 1, diode D 1and inductance L 1;
Described transistor T 1collector electrode be connected with the output plus terminal of charge power supply; Described transistor T 1emitter pass through inductance L 1be connected with lithium battery anode, the negative terminal of described lithium battery is connected and ground connection with the output negative terminal of charge power supply;
Described diode D 1negative electrode and transistor T 1emitter connect, described diode D 1plus earth; Described transistor T 1base stage be connected with controller.
3. portable car-mounted stand-by power supply according to claim 1, is characterized in that, described 2nd DC/DC module is booster circuit, and described booster circuit comprises transistor T 2, diode D 2, inductance L 2with electric capacity C 2;
Inductance L is passed through in one end that described super capacitor is connected with switch 2with transistor T 2collector electrode connects, and the described super capacitor other end is connected and ground connection with the negative terminal of lithium battery, described transistor T 2collector electrode and diode D 2anode connect; Described diode D 2negative electrode connect electric capacity C 2one end, as the output plus terminal of the 2nd DC/DC module, be connected with the input anode of vehicle startup system; Described electric capacity C 2other end ground connection, as the output negative terminal of the 2nd DC/DC module, be connected with the input negative terminal of vehicle startup system;
Described transistor T 2emitter connect the negative terminal of lithium battery and ground connection; Described transistor T 2base stage be connected with controller.
4. portable car-mounted stand-by power supply according to claim 3, is characterized in that, described voltage sample link comprises resistance R 1with resistance R 2, diode D in described 2nd DC/DC module 2negative electrode contact resistance R successively 1with resistance R 2rear ground connection, described resistance R 1with resistance R 2the one end connected is connected with controller.
5. portable car-mounted stand-by power supply according to claim 1, is characterized in that, also comprises the second interchanger be connected with lithium battery, and described lithium battery is connected with external equipment, for external equipment is powered by described second interchanger.
6. portable car-mounted stand-by power supply according to claim 5, is characterized in that, described second interchanger is booster circuit, comprises transistor T 3, diode D 3, inductance L 3with electric capacity C 3;
Described transistor T 3collector electrode pass through inductance L 3be connected with the anode of lithium battery, described transistor T 3collector electrode and diode D 3anode connect; Diode D 3negative electrode connect electric capacity C 3one end, as the output plus terminal of the second interchanger, be connected with the input anode of external equipment, described electric capacity C 3the other end be connected and ground connection with the negative terminal of lithium battery, as the output negative terminal of the second interchanger, be connected with the input negative terminal of external equipment;
Described transistor T 3emitter be connected and ground connection with the negative terminal of lithium battery;
Described transistor T 3base stage be connected with controller.
7. portable car-mounted stand-by power supply according to claim 5, is characterized in that, described second interchanger is reduction voltage circuit, comprises transistor T 31, diode D 31, inductance L 31with electric capacity C 31;
Described transistor T 31collector electrode be connected with the anode of lithium battery;
Described transistor T 31emitter respectively with diode D 31negative electrode and inductance L 31one end connect, described inductance L 31the other end as the output plus terminal of the second interchanger, be connected with the input anode of external equipment; Described diode D 31anode be connected and ground connection with the negative terminal of lithium battery, as the output negative terminal of the second interchanger, be connected with the input negative terminal of external equipment;
Described transistor T 31base stage be connected with controller.
8. portable car-mounted stand-by power supply according to claim 5, it is characterized in that, described second interchanger is reduction voltage circuit, comprise voltage stabilizing chip 7805, the described input of voltage stabilizing chip 7805 is connected with the anode of lithium battery, the output of described voltage stabilizing chip 7805, as the output plus terminal of the second interchanger, is connected with the input anode of external equipment; The earth terminal of described 7805 is connected and ground connection with the negative terminal of lithium battery, as the output negative terminal of the second interchanger, is connected with the input negative terminal of external equipment.
9. portable car-mounted stand-by power supply according to claim 5, is characterized in that, described second interchanger is DC/AC inverter circuit, and described DC/AC inverter circuit comprises transistor T 33, transistor T 34, diode D 33, diode D 34with centre-tapped transformer T r;
Described transistor T 33with transistor T 34collector electrode respectively with centre-tapped transformer T rtwo input ports connect, described transistor T 33collector electrode by diode D 33be connected with its emitter, described transistor T 34collector electrode by diode D 34be connected with its emitter, described transistor T 33emitter and transistor T 34emitter be all connected and ground connection with the negative terminal of lithium battery; Described transistor T 33base stage and transistor T 34base stage respectively with control connection;
Described centre-tapped transformer T rcentre cap be connected with the anode of lithium battery; Described centre-tapped transformer T routput be the output of the second interchanger, be connected with the input of external equipment.
10. portable car-mounted stand-by power supply according to claim 1, is characterized in that, described charge power supply is vehicle-mounted cigarette lighter.
CN201410038944.8A 2014-01-26 2014-01-26 A kind of portable car-mounted stand-by power supply Active CN103795115B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410038944.8A CN103795115B (en) 2014-01-26 2014-01-26 A kind of portable car-mounted stand-by power supply

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410038944.8A CN103795115B (en) 2014-01-26 2014-01-26 A kind of portable car-mounted stand-by power supply

Publications (2)

Publication Number Publication Date
CN103795115A CN103795115A (en) 2014-05-14
CN103795115B true CN103795115B (en) 2016-03-02

Family

ID=50670549

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410038944.8A Active CN103795115B (en) 2014-01-26 2014-01-26 A kind of portable car-mounted stand-by power supply

Country Status (1)

Country Link
CN (1) CN103795115B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104057901B (en) * 2014-06-27 2016-04-27 深圳市金能弘盛能源科技有限公司 A kind of automobile super capacitor module power-supply management system
CN104393356B (en) * 2014-10-24 2017-06-30 新疆希望电子有限公司 A kind of battery and super capacitor mixed energy storage fast charge method
CN105871205A (en) * 2016-05-06 2016-08-17 华南理工大学 Integrated multifunctional power source switching system
CN107546835A (en) * 2016-06-27 2018-01-05 惠州市卡儿酷科技有限公司 power supply assembly and method
US20180372054A1 (en) * 2016-07-08 2018-12-27 Shenzhen Sbase Electronics Technology Co., Ltd. Portable start-up power supply
CN106451718A (en) * 2016-09-14 2017-02-22 河北工业大学 Compound emergency power supply apparatus used for low-temperature start of vehicle
CN106532830A (en) * 2016-11-30 2017-03-22 四川赛尔雷新能源科技有限公司 Multifunctional power supply device
CN106712200B (en) * 2017-01-22 2023-12-29 湖南电将军新能源有限公司 Automobile starting power supply based on super capacitor
DE102017220805A1 (en) * 2017-11-22 2019-05-23 Robert Bosch Gmbh Vehicle device and method for operating a vehicle device
CN111572374A (en) * 2020-04-21 2020-08-25 徐州市恒源电器有限公司 Portable vehicle-mounted energy-storage multifunctional emergency set

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110073635A (en) * 2009-12-24 2011-06-30 두산인프라코어 주식회사 Power transformer for hybrid industrial vehicle
CN203039390U (en) * 2012-12-20 2013-07-03 深圳市宙斯特科技有限公司 Vehicle emergency starting multifunctional mobile power supply
CN203381507U (en) * 2013-05-30 2014-01-08 重庆市星海电子有限公司 Novel energy storage device for vehicle starting
CN203722298U (en) * 2014-01-26 2014-07-16 华南理工大学 Portable vehicle standby power supply

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110073635A (en) * 2009-12-24 2011-06-30 두산인프라코어 주식회사 Power transformer for hybrid industrial vehicle
CN203039390U (en) * 2012-12-20 2013-07-03 深圳市宙斯特科技有限公司 Vehicle emergency starting multifunctional mobile power supply
CN203381507U (en) * 2013-05-30 2014-01-08 重庆市星海电子有限公司 Novel energy storage device for vehicle starting
CN203722298U (en) * 2014-01-26 2014-07-16 华南理工大学 Portable vehicle standby power supply

Also Published As

Publication number Publication date
CN103795115A (en) 2014-05-14

Similar Documents

Publication Publication Date Title
CN103795115B (en) A kind of portable car-mounted stand-by power supply
CN201388079Y (en) Hybrid electric vehicle charger
CN102083665B (en) Power storage device for hybrid or electric motor vehicles, and associated electric power management method thereof
CN105365593A (en) Charge connection device for electric vehicle, and control method thereof
CN106740206A (en) The quick change method and quick-change system of battery of electric vehicle bag
CN206559220U (en) A kind of portable power TED transferred electron device
CN104986047A (en) Control method for low-voltage hybrid vehicle battery system
CN206900195U (en) A kind of electric car combines charging system
CN210941434U (en) Energy management system and vehicle
CN203722298U (en) Portable vehicle standby power supply
CN101944754A (en) Direct current step-up/step-down circuit
CN207074883U (en) A kind of auxiliary source power supply circuit of Portable direct-current input equipment
CN206524651U (en) A kind of Intelligent charge control device of hybrid power passenger car system
CN203691031U (en) Uninterrupted DC power supply
CN203590037U (en) Single switch inverted output secondary wide gain converter
CN202923413U (en) Alternating current (AC) and direct current (DC) charging low voltage power supply control system for full electric vehicle
CN113752885B (en) Electric automobile that can support direct current charging national standard treasured that charges
CN205768752U (en) There is the intelligent DC charging pile system of stand-by power supply
CN103956531A (en) Extra high current peak pulse charging control method for lead-acid storage battery
CN201113516Y (en) Emergency charger for mobile telephone charged by batteries
CN107150607A (en) A kind of intelligent charger
CN219927479U (en) Electric vehicle direct-current charging system and electric vehicle
CN105119331A (en) Vehicle supplementing charging system based on sunlight
CN104917231B (en) A kind of low pressure hybrid power automobile battery system
CN220374305U (en) Low-voltage storage battery charging system

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant