CN203707842U - Emergent special multifunctional mobile power supply dormancy circuit - Google Patents

Emergent special multifunctional mobile power supply dormancy circuit Download PDF

Info

Publication number
CN203707842U
CN203707842U CN201420045639.7U CN201420045639U CN203707842U CN 203707842 U CN203707842 U CN 203707842U CN 201420045639 U CN201420045639 U CN 201420045639U CN 203707842 U CN203707842 U CN 203707842U
Authority
CN
China
Prior art keywords
circuit
power supply
operational amplifier
mobile power
power source
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.)
Expired - Fee Related
Application number
CN201420045639.7U
Other languages
Chinese (zh)
Inventor
王涛
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.)
BAODING ORIGINAL MECHANICAL AND ELECTRICAL TECHNOLOGY SERVICE Co Ltd
Original Assignee
BAODING ORIGINAL MECHANICAL AND ELECTRICAL TECHNOLOGY SERVICE Co Ltd
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 BAODING ORIGINAL MECHANICAL AND ELECTRICAL TECHNOLOGY SERVICE Co Ltd filed Critical BAODING ORIGINAL MECHANICAL AND ELECTRICAL TECHNOLOGY SERVICE Co Ltd
Priority to CN201420045639.7U priority Critical patent/CN203707842U/en
Application granted granted Critical
Publication of CN203707842U publication Critical patent/CN203707842U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model discloses an emergent special multifunctional mobile power supply dormancy circuit. The circuit comprises a mobile power supply charging loop L1. The mobile power supply charging loop L1 is connected in series to a current detection resistor R1. A high potential end of the current detection resistor R1 is connected to an in-phase input terminal of an operational amplifier A1. An inverting input terminal of the operational amplifier A1 is connected to a reference voltage generation circuit. An output terminal of the operational amplifier A1 is connected to a signal input terminal of an electronic switch. An output terminal of the electronic switch is connected in series to a power supply loop L2 of a lithium-battery mobile power supply auxiliary circuit. By using the circuit of the utility model, when charging is not performed, auxiliary circuits related to charging, such as a charging protection circuit and the like, are cut off so that electric energy and equipment losses are reduced; a utilization rate of lithium-battery mobile power supply electric energy is increased and power supply performance is increased too. The circuit possesses the following characteristics that the circuit structure is simple; working is reliable; working efficiency is high and so on.

Description

A kind of emergent special-purpose multifunctional portable power source dormant circuit
Technical field
The utility model relates to a kind of emergent special-purpose multifunctional portable power source dormant circuit.
Background technology
Lithium battery mobile power has conveniently moving, ground feature is easy to carry, near can be, there is no the interim emergency service of equipment of power supply, its main application is energy emergency starting automobile when cannot starting automobile for automobile storage battery power shortage, the functions such as inflator pump and emergency power supply, outdoor lighting are combined, be one of product of outdoor trip indispensability simultaneously.Can also give the household electrical appliance power supplies such as notebook and mobile phone simultaneously.
But because its power supply is lithium battery; the electric power storage of lithium battery institute can be limited, restricted its power supply performance, therefore; improve the utilance of electric energy as far as possible; to improve its power supply performance, but, in use; because its auxiliary circuit (charge protector etc.) is also in running order in the time not charging; consume electric energy always, reducing the utilance of its electric energy, affecting its power supply performance.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of emergent special-purpose multifunctional portable power source dormant circuit, and it has, and circuit structure is simple, reliable operation, operating efficiency high.The utility model can cut off charge protector etc. and the relevant auxiliary circuit of charging in the time not charging, thereby reduces electric energy and equipment loss, improves the utilance of lithium battery mobile power electric energy, thereby improves its power supply performance.
For solving the problems of the technologies described above, technical solution adopted in the utility model is:
Comprise lithium battery, portable power source charge circuit L1, portable power source charge circuit L1 serial connection current sense resistor R1, the hot end of current sense resistor R1 is connected with the in-phase input end of operational amplifier A 1, the inverting input of operational amplifier A 1 is connected with reference voltage generating circuit, the output of operational amplifier A 1 is connected with the signal input part of electronic switch, and the output of electronic switch is series at the current supply circuit L2 of lithium battery mobile power auxiliary circuit.
The utility model further improves and is:
Reference voltage generating circuit is resistor voltage divider circuit.
Resistor voltage divider circuit is: between the positive V+ of power supply and power-V-, connect successively R2 and R3, the inverting input of operational amplifier A 1 is connected with the node between R2 and R3.
The electronic valve device of electronic switch is NPN type switch triode Q.
The beneficial effect that adopts technique scheme to produce is:
Comprise lithium battery, portable power source charge circuit L1, portable power source charge circuit L1 serial connection current sense resistor R1, the hot end of current sense resistor R1 is connected with the in-phase input end of operational amplifier A 1, the inverting input of operational amplifier A 1 is connected with reference voltage generating circuit, the output of operational amplifier A 1 is connected with the signal input part of electronic switch, and the output of electronic switch is series at the current supply circuit L2 of lithium battery mobile power auxiliary circuit.Judge that by voltage comparator whether lithium battery mobile power is in charged state, circuit structure is simple, reliable operation, in the time detecting it in uncharged state, voltage comparator output low level control electronic switch cuts off the power supply of lithium battery mobile power auxiliary circuit, reduce electric energy and equipment loss, improve the utilance of lithium battery mobile power electric energy, thereby improve its power supply performance; Reference voltage generating circuit is resistor voltage divider circuit, and circuit structure is simple and practical; The electronic valve device of electronic switch is NPN type switch triode Q, and the supply current of lithium battery mobile power auxiliary circuit is little, and adopting triode Q is electronic valve device, and cost is low, and power consumption is little.Therefore, it have that circuit structure is simple, reliable operation, operating efficiency high.
Accompanying drawing explanation
Fig. 1 is electrical block diagram of the present utility model.
Embodiment
Embodiment is as shown in Figure 1 known, comprise lithium battery, portable power source charge circuit L1, portable power source charge circuit L1 serial connection current sense resistor R1, its resistance is 5 Europe, the hot end of current sense resistor R1 is connected with the in-phase input end of operational amplifier A 1, the inverting input of operational amplifier A 1 is connected with reference voltage generating circuit, the reference voltage of its generation is set as 0.3V, the output of operational amplifier A 1 is connected with the signal input part of electronic switch, and the output of electronic switch is series at the current supply circuit L2 of lithium battery mobile power auxiliary circuit.Reference voltage generating circuit is resistor voltage divider circuit.
Resistor voltage divider circuit is: between the positive V+ of power supply and power-V-, connect successively R2 and R3, the inverting input of operational amplifier A 1 is connected with the node between R2 and R3.
The electronic valve device of electronic switch is NPN type switch triode Q.
Operation principle:
Be series at the inverting input of reference voltage (about 0.3V) the input operational amplifier A1 that the R2 between the positive V+ of power supply and power-V-and the node between R3 produce, in the time that lithium battery mobile power charges, portable power source charge circuit L1 can produce charging current (being greater than 60 milliamperes), thereby making current sense resistor R1(resistance is 5 Europe) two ends generation voltage drop, the in-phase input end of this voltage input operational amplifier A1, higher than reference voltage, operational amplifier A 1 is exported high level signal, make NPN type switch triode Q in conducting state, thereby make the current supply circuit L2 conducting of lithium battery mobile power auxiliary circuit, automatically be power supply auxiliary circuit power supply, in the time that lithium battery mobile power is uncharged, its circuit working state is contrary, and the current supply circuit L2 of lithium battery mobile power auxiliary circuit is disconnected, and is power supply auxiliary circuit power-off automatically.

Claims (4)

1. an emergent special-purpose multifunctional portable power source dormant circuit, comprise lithium battery, portable power source charge circuit L1, it is characterized in that: described portable power source charge circuit L1 serial connection current sense resistor R1, the hot end of described current sense resistor R1 is connected with the in-phase input end of operational amplifier A 1, the inverting input of described operational amplifier A 1 is connected with reference voltage generating circuit, the output of described operational amplifier A 1 is connected with the signal input part of electronic switch, the output of described electronic switch is series at the current supply circuit L2 of lithium battery mobile power auxiliary circuit.
2. the emergent special-purpose multifunctional portable power source dormant circuit of one according to claim 1, is characterized in that described reference voltage generating circuit is resistor voltage divider circuit.
3. the emergent special-purpose multifunctional portable power source dormant circuit of one according to claim 2, it is characterized in that described resistor voltage divider circuit is: between the positive V+ of power supply and power-V-, connect successively R2 and R3, the inverting input of described operational amplifier A 1 is connected with the node between R2 and R3.
4. according to the emergent special-purpose multifunctional portable power source dormant circuit of the one described in arbitrary claim in claim 1-3, the electronic valve device that it is characterized in that described electronic switch is NPN type switch triode Q.
CN201420045639.7U 2014-01-24 2014-01-24 Emergent special multifunctional mobile power supply dormancy circuit Expired - Fee Related CN203707842U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420045639.7U CN203707842U (en) 2014-01-24 2014-01-24 Emergent special multifunctional mobile power supply dormancy circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420045639.7U CN203707842U (en) 2014-01-24 2014-01-24 Emergent special multifunctional mobile power supply dormancy circuit

Publications (1)

Publication Number Publication Date
CN203707842U true CN203707842U (en) 2014-07-09

Family

ID=51058224

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420045639.7U Expired - Fee Related CN203707842U (en) 2014-01-24 2014-01-24 Emergent special multifunctional mobile power supply dormancy circuit

Country Status (1)

Country Link
CN (1) CN203707842U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107017678A (en) * 2017-05-04 2017-08-04 欣旺达电动汽车电池有限公司 A kind of charging controller and its method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107017678A (en) * 2017-05-04 2017-08-04 欣旺达电动汽车电池有限公司 A kind of charging controller and its method

Similar Documents

Publication Publication Date Title
CN203933124U (en) A kind of single interface portable power source, bluetooth keyboard and protective sleeve
CN103490389B (en) Battery protecting circuit and system
CN204290475U (en) Power supply switch circuit and electronic equipment
CN202019219U (en) Multifunctional universal serial bus (USB) charger
CN103762650B (en) A kind of single USB port stand-by power supply based on equilibrium charging technology
CN101778156B (en) Mobile phone capable of charging other mobile phones
CN202050235U (en) Battery reverse-connection protection circuit and lamp
CN203707842U (en) Emergent special multifunctional mobile power supply dormancy circuit
CN203734663U (en) Bluetooth matching circuit based on NFC
CN206099459U (en) A activation circuit for battery management system
CN205123372U (en) Utilize battery charging outfit of WIFI signal
CN204886393U (en) A power control system for intelligent gas meter
CN204046673U (en) A kind of mobile phone with double cell function
CN204290388U (en) A kind of mobile phone over-charge protective device
CN204256137U (en) Electric quantity detecting circuit
CN105262183A (en) Power-saving type USB charging structure
CN206272333U (en) A kind of online adaptive switched power management modules free of discontinuities of DC DC
CN201623513U (en) Electrical energy distributor circuit and mobile terminal
CN204256043U (en) There is the electric quantity detecting circuit of overcurrent protection
CN205336244U (en) Intelligence switch circuit with load electric quantity that charges is full of back intelligence disconnection function
CN104577962A (en) Power supply protection system
CN204559200U (en) Portable power source
CN204706932U (en) To power stable wireless mobile power supply
CN204794042U (en) Overvoltage crowbar of lithium cell constant current quick charge
CN104283245A (en) High-conversion-efficiency mobile power source circuit

Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140709

Termination date: 20150124

EXPY Termination of patent right or utility model