CN103746424A - Application of lithium iron phosphate battery in mobile power supply - Google Patents

Application of lithium iron phosphate battery in mobile power supply Download PDF

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Publication number
CN103746424A
CN103746424A CN201410008831.3A CN201410008831A CN103746424A CN 103746424 A CN103746424 A CN 103746424A CN 201410008831 A CN201410008831 A CN 201410008831A CN 103746424 A CN103746424 A CN 103746424A
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China
Prior art keywords
circuit
output
battery
control circuit
electrically connected
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Pending
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CN201410008831.3A
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Chinese (zh)
Inventor
蓝艳华
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Xiamen Fulongyuan Electronic Science & Technology Co Ltd
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Xiamen Fulongyuan Electronic Science & Technology Co Ltd
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Priority to CN201410008831.3A priority Critical patent/CN103746424A/en
Publication of CN103746424A publication Critical patent/CN103746424A/en
Pending legal-status Critical Current

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Abstract

The invention provides application of a lithium iron phosphate battery in a mobile power supply. In the application, the lithium iron phosphate battery has capacity of 25A and reference voltage of 2.5-3.6V. The mobile power supply comprises a circuit board which is electrically connected with the lithium iron phosphate battery; the circuit board comprises a battery protective circuit, a booster circuit, a charging control circuit, an MCU control circuit, an electric quantity display circuit, an output interface circuit and a USB interface; the battery protective circuit is connected with a rechargeable battery; the battery protective circuit is connected with the booster circuit and the charging control circuit; the charging control circuit is connected with the MCU control circuit; the MCU control circuit is connected with the electric quantity display circuit and the booster circuit; the booster circuit is connected with the output interface circuit; the output interface circuit is connected with the USB interface. The charging ability and times of the mobile power supply adopting the lithium iron phosphate battery for a smart phone or a tablet personal computer are greatly increased, and the mobile power supply is very suitable for being used as a temporary mobile power supply outdoor to use for a long time.

Description

The application of ferric phosphate lithium cell in portable power source
Technical field
The present invention relates to battery applications field, the particularly application of a kind of ferric phosphate lithium cell in portable power source.
Background technology
A kind of portable charger that integrates power supply and charge function of portable power source, can charge or standby power supply whenever and wherever possible to digital equipments such as mobile phones.Generally by lithium battery or battery that can store electrical energy as charge storage unit.The features such as this class battery has large capacity, multipurpose conventionally, volume is little, the life-span is long and safe and reliable are can be whenever and wherever possible for the multiple digital product such as mobile phone, MP3, MP4, digital camera, PDA, palmtop PC, handheld device is powered or the functional product of standby charging.
Along with the product of smart mobile phone and panel computer class emerges rapidly, but just due to its frivolous portable design, the volume of its internal battery is restricted, thereby has affected the capacity of battery; And the advantage of these intelligent series products biases toward mobile application, make electric weight expend acceleration, often use and even within several hours, just need charging half a day, cause user's use to cause very large inconvenience.
For solving the problems of the technologies described above, Chinese patent Granted publication number is CN202586433U, Granted publication day is on December 5th, 2012, name is called portable power source, a kind of portable power source that is applied to apple series product is disclosed, the portable power source that extends the service time of the intelligent artifacts such as iPad, iPhone, it comprises movable power shell, be arranged at rechargeable battery and circuit board in movable power shell, input charging adapter, for rechargeable battery and circuit board provide charge power supply, described circuit board comprises battery protecting circuit, booster circuit, charge switch circuit, voltage stabilizing circuit, status circuit, single chip machine controlling circuit, electric quantity display circuit and output interface circuit, the input of described battery protecting circuit is electrically connected on rechargeable battery, the output of described battery protecting circuit is electrically connected on the input of booster circuit and the input of charge switch circuit, the output of described charge switch circuit is electrically connected on the input of voltage stabilizing circuit, the output of described voltage stabilizing circuit and the output of status circuit are electrically connected on the input of single chip machine controlling circuit, the output of described single chip machine controlling circuit is electrically connected on the input of electric quantity display circuit and the input of booster circuit, the output of described booster circuit is electrically connected on output interface circuit, described output interface circuit connects the first external equipment to be charged, when the circuit board of input charging adapter and portable power source is during in connection status, the output of described input charging adapter is also electrically connected on the input of charge switch circuit.
This rechargeable battery is general in this specification, and what adopt is lithium battery, and this lithium battery is specifically comprised of single battery core, and its specification is 2500/3.7V.Therefore this battery capacity is little, and in this specification, further instruction can be selected external power charging (can referring to the 0032nd section, this specification).
Application publication number is CN103000937A, date of publication is 2013.03.27, denomination of invention is pure electric automobile ferric phosphate lithium cell, it discloses the application of ferric phosphate lithium cell at pure electric automobile, it can well increase the cell voltage of electric automobile, can reduce the fit quantity of battery pack, when guaranteeing voltage, also reduce battery pack and occupy vehicle interior volume.
Applicant finds, portable power source in prior art there is no use ferric phosphate lithium cell, the former a kind of application belonging in automobile of ferric phosphate lithium cell, comprise that prior art has disclosed can be applied on electric automobile, but the few expects a kind of application of the present invention.
Summary of the invention
Given this, technical problem to be solved by this invention is to provide a kind of application that a kind of the few expect.
Concrete technical scheme is:
The application of a kind of ferric phosphate lithium cell in portable power source.
Further, described ferric phosphate lithium cell is to have the ferric phosphate lithium cell that 25A capacity, reference voltage are 2.5-3.6V.
Further, described portable power source comprises the circuit board that is electrically connected to this ferric phosphate lithium cell, described circuit board comprises battery protecting circuit, booster circuit, charging control circuit, MCU control circuit, electric quantity display circuit, output interface circuit and USB interface, the input of described battery protecting circuit is electrically connected on rechargeable battery, the output of described battery protecting circuit is electrically connected on the input of booster circuit and the input of charging control circuit, the output of described charging control circuit is electrically connected on the input of MCU control circuit, the output of described MCU control circuit is electrically connected on the input of electric quantity display circuit and the input of booster circuit, the output of described booster circuit is electrically connected on output interface circuit, the output of described output interface circuit is electrically connected to USB interface.
Further, described USB interface is 3, and wherein 1 is the USB interface of output 2A electric current, 2 USB interface for output 1A electric current.
Further, described MCU control circuit is comprised of single-chip microcomputer HT46R066B and peripheral circuit thereof.
Further, described booster circuit is comprised of boost chip SY7208 and peripheral circuit thereof.
Advantage of the present invention is:
Application by ferric phosphate lithium cell in portable power source, because ferric phosphate lithium cell, there is large capacity, internal resistance is low, efficiency is high, the feature such as safer (not spontaneous combustion, do not explode, impact resistance), be applied to after portable power source, making portable power source is that charging ability and the charging times of smart mobile phone or panel computer increases greatly, and the interim portable power source of very convenient outdoor conduct uses for a long time.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of the portable power source applied of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the preferred embodiment of the invention, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
The application of a kind of ferric phosphate lithium cell in portable power source.In this application, described ferric phosphate lithium cell is to have the ferric phosphate lithium cell that 25A capacity, reference voltage are 2.5-3.6V.
Referring to Fig. 1, described portable power source comprises the circuit board 2 that is electrically connected to this ferric phosphate lithium cell 1, described circuit board 2 comprises battery protecting circuit 21, booster circuit 22, charging control circuit 23, MCU control circuit 24, electric quantity display circuit 25, output interface circuit 26 and USB interface 27, the input of described battery protecting circuit 21 is electrically connected on rechargeable battery 1, the output of described battery protecting circuit 21 is electrically connected on the input of booster circuit 22 and the input of charging control circuit 23, the output of described charging control circuit 23 is electrically connected on the input of MCU control circuit 24, the output of described MCU control circuit 24 is electrically connected on the input of electric quantity display circuit 25 and the input of booster circuit 22, the output of described booster circuit 22 is electrically connected on output interface circuit 26, the output of described output interface circuit 26 is electrically connected to USB interface 27,
Further, described USB interface 27 is 3, and wherein 1 is the USB interface of output 2A electric current, 2 USB interface for output 1A electric current.Product of the present invention has 3 USB mouths, can give three load chargings simultaneously, and maximum charging current can reach 4A.
Further, described MCU control circuit 24 is comprised of single-chip microcomputer HT46R066B and peripheral circuit thereof.
Further, described booster circuit 22 is comprised of boost chip SY7208 and peripheral circuit thereof.
Preferably, described electric quantity display circuit 25 is mainly comprised of several light-emitting diodes.Its role is to: the state of charge of portable power source under the state of charge of portable power source and charged state while showing normal operating conditions, it is controlled and shown by MCU control circuit.
Wherein, the effect of described battery protecting circuit 21 is: lithium battery is risen overcharge, cross put, overcurrent protection; The effect of described booster circuit 22 is: the voltage 2.5-3.6V of rechargeable battery is boosted to 5V voltage stabilizing output; The effect of described charging control circuit 23 is: rechargeable battery is carried out to trickle, constant current, the Charge Management of constant voltage mode; The effect of described MCU control circuit 24 is: manages each operating state of whole circuit, comprises the control of charging control circuit, and the monitoring of electric discharge overcurrent, the indication of electric weight is controlled.
To have on ferric phosphate lithium cell application that 25A capacity, reference voltage are 2.5-3.6V and portable power source, this ferric phosphate lithium cell internal resistance low (0.9 milliohm) efficiency is high, the advantage having comprises following part, this ferric phosphate lithium cell has advantages of, thereby also makes whole portable power source tool have the following advantages:
1, security performance
P-O key in LiFePO4 crystal is firm, be difficult to decompose, even if also can be as cobalt acid lithium at high temperature or while overcharging structural breakdown heating or form strong oxidizing property material, so have good fail safe.
2, the life-span improves
Ferric phosphate lithium cell refers to the lithium ion battery as positive electrode with LiFePO4.Lithium iron phosphate dynamic battery, cycle life reaches more than 2000 times, and standard charging (5 hour rate) is used, and can reach 2000 times.
3, repid discharge
Electric current 4A fast charging and discharging greatly, charges in 60 minutes and can make battery be full of, and maximum starting current can reach 4A.
4, high-temperature behavior
LiFePO4 electric heating peak value can reach 350 ℃-500 ℃.Operating temperature range broad (20 ℃-75 ℃).
5, without memory
Chargeable battery is often being worked in being full of under the condition not discharging, and capacity can be rapidly lower than rated capacity value, and this phenomenon is called memory effect.As ni-mh, nickel-cadmium cell, have Memorability, and ferric phosphate lithium cell is without this phenomenon, battery, no matter in what state, can, with filling with use, need not first discharge and recharge.
6, weight is slim and graceful
Volume with the ferric phosphate lithium cell of equal-specification capacity is 2/3 of poly-lithium battery volume, and weight is 1/3 of poly-lithium battery.
7, environmental protection and energy saving
This battery is containing any heavy metal and rare metal (Ni-MH battery needs rare metal), nontoxic (SGS authentication by), pollution-free, meets European RoHS regulation, no matter produce and use in, all pollution-free.
8, battery performance
Lithium iron phosphate positive material is made the high capacity lithium ion battery use of more easily connecting.There is the advantages such as nontoxic, pollution-free, security performance is good, raw material wide material sources, low price, and the life-span is long.
Finally, this ferric phosphate lithium cell is applied to this portable power source, and its good battery performance having can be simplified the structure of circuit board, and greatly improve portable power source is charging ability and the charging times that mobile phone or panel computer charge simultaneously.
The concrete course of work of portable power source of application is as follows:
Portable power source can be for the instant charging of smart mobile phone and panel computer, the smart mobile phone of take below illustrates as example: first, the charging inlet of smart mobile phone is connected with USB interface, by rechargeable battery, boost to 5V voltage stabilizing and export output interface circuit to and carry out smart mobile phone to charge, then MCU control circuit is controlled electric quantity display circuit and is shown in real time charged state.Battery protecting circuit and charging control circuit carry out omnidistance charging process constant pressure and flow, prevent overcurrent protection.
After ferric phosphate lithium cell has discharged, can take out and charge separately.The technology charging the battery can be used the attainable mode of those skilled in the art's routine.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

Claims (6)

1. the ferric phosphate lithium cell application in portable power source.
2. application as claimed in claim 1, is characterized in that, described ferric phosphate lithium cell is to have the ferric phosphate lithium cell that 25A capacity, reference voltage are 2.5-3.6V.
3. application as claimed in claim 2, it is characterized in that, described portable power source comprises the circuit board that is electrically connected to this ferric phosphate lithium cell, described circuit board comprises battery protecting circuit, booster circuit, charging control circuit, MCU control circuit, electric quantity display circuit, output interface circuit and USB interface, the input of described battery protecting circuit is electrically connected on rechargeable battery, the output of described battery protecting circuit is electrically connected on the input of booster circuit and the input of charging control circuit, the output of described charging control circuit is electrically connected on the input of MCU control circuit, the output of described MCU control circuit is electrically connected on the input of electric quantity display circuit and the input of booster circuit, the output of described booster circuit is electrically connected on output interface circuit, the output of described output interface circuit is electrically connected to USB interface.
4. application as claimed in claim 3, is characterized in that, described USB interface is 3, and wherein 1 is the USB interface of output 2A electric current, 2 USB interface for output 1A electric current.
5. application as claimed in claim 4, is characterized in that, described MCU control circuit is comprised of single-chip microcomputer HT46R066B and peripheral circuit thereof.
6. application as claimed in claim 5, is characterized in that, described booster circuit is comprised of boost chip SY7208 and peripheral circuit thereof.
CN201410008831.3A 2014-01-08 2014-01-08 Application of lithium iron phosphate battery in mobile power supply Pending CN103746424A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105529772A (en) * 2016-01-15 2016-04-27 泉州市九都电子科技有限公司 Intelligent mobile power supply
CN105842624A (en) * 2015-01-14 2016-08-10 宝创企业股份有限公司 Mobile power device suitable for measuring capacities of other mobile power supplies
CN108054814A (en) * 2017-12-28 2018-05-18 苏州江南航天机电工业有限公司 For the electric power system of epidemic prerention vehicle L30 spraying machines

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202333918U (en) * 2011-12-09 2012-07-11 雷星亮 Portable standby power source
WO2012093923A1 (en) * 2011-01-06 2012-07-12 Syed Sultan Ahmed Green energy generator
CN202586433U (en) * 2012-05-09 2012-12-05 厦门广开电子有限公司 Mobile power supply
CN103107369A (en) * 2013-01-30 2013-05-15 浙江义阳光电科技有限公司 Assembly method of ferric phosphate lithium battery
CN203166552U (en) * 2012-11-27 2013-08-28 比亚迪股份有限公司 Mobile power supply

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012093923A1 (en) * 2011-01-06 2012-07-12 Syed Sultan Ahmed Green energy generator
CN202333918U (en) * 2011-12-09 2012-07-11 雷星亮 Portable standby power source
CN202586433U (en) * 2012-05-09 2012-12-05 厦门广开电子有限公司 Mobile power supply
CN203166552U (en) * 2012-11-27 2013-08-28 比亚迪股份有限公司 Mobile power supply
CN103107369A (en) * 2013-01-30 2013-05-15 浙江义阳光电科技有限公司 Assembly method of ferric phosphate lithium battery

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105842624A (en) * 2015-01-14 2016-08-10 宝创企业股份有限公司 Mobile power device suitable for measuring capacities of other mobile power supplies
CN105529772A (en) * 2016-01-15 2016-04-27 泉州市九都电子科技有限公司 Intelligent mobile power supply
CN108054814A (en) * 2017-12-28 2018-05-18 苏州江南航天机电工业有限公司 For the electric power system of epidemic prerention vehicle L30 spraying machines

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Application publication date: 20140423