CN203278304U - Lithium iron phosphate emergency power supply with preheating function - Google Patents
Lithium iron phosphate emergency power supply with preheating function Download PDFInfo
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- CN203278304U CN203278304U CN2013202262902U CN201320226290U CN203278304U CN 203278304 U CN203278304 U CN 203278304U CN 2013202262902 U CN2013202262902 U CN 2013202262902U CN 201320226290 U CN201320226290 U CN 201320226290U CN 203278304 U CN203278304 U CN 203278304U
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Abstract
The utility model discloses a lithium iron phosphate emergency power supply with a preheating function. The lithium iron phosphate emergency power supply comprises a lithium iron phosphate battery (101), a polyimide electrothermal sheet preheating module (102), a 12V start output module (103), a 5V voltage regulator circuit (104), a 5V universal serial bus (USB) output module (105), a micro-control unit (MCU) control circuit (106), an LCD display module (107), a charger (108), a charging control module (109) and a temperature detection module (110). The lithium iron phosphate emergency power supply has the advantages that the lithium iron phosphate battery can be preheated when the temperature of the lithium iron phosphate battery is detected to be low, and the problem that the discharging efficiency is low when the lithium iron phosphate battery emergency power supply is used in a low-temperature environment is solved.
Description
Technical field
The utility model belongs to power technique fields, relates to especially a kind of LiFePO4 emergency power supply with preheat function.
Background technology
Ferric phosphate lithium cell refers to the lithium ion battery of LiFePO4 as positive electrode, it has plurality of advantages, (1) improvement of fail safe, P-O key in the LiFePO4 crystal is firm, be difficult to decompose, even if also can be as cobalt acid lithium at high temperature or when overcharging structural breakdown heating or form the strong oxidizing property material, therefore have good fail safe.(2) improvement in life-span, the cycle life of long-life lead-acid battery are 300 left and right, and be the highest also with regard to 500 times, and 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.The lead-acid battery of homogenous quantities mostly was for 1～1.5 year most service time, and ferric phosphate lithium cell will reach 7～8 years useful life under similarity condition.(3) large capacity, have than the larger capacity of common batteries (plumbic acid etc.).(4) memory-less effect, chargeable battery is worked often being in to be full of under the condition that does not discharge, capacity can be rapidly lower than the rated capacity value, this phenomenon is called memory effect, have Memorability as ni-mh, nickel separation cell, and ferric phosphate lithium cell is without this phenomenon, no matter battery is in any state, can be with filling with use, need not first discharge and recharge.(5) volume of lightweight ferric phosphate lithium cell with the equal-specification capacity is 2/3 of lead-acid battery volume, and weight is 1/3 of lead-acid battery.(6) environmental protection, this kind battery does not contain any heavy metal and rare metal, and is nontoxic, pollution-free, meets European RoHS regulation, is absolute environmental protection battery.But exist a large amount of lead in lead-acid battery, if deal with improperly, will enough become secondary pollution to environment after it is discarded, and LiFePO 4 material is all pollution-free no matter in producing and using.
In the automobile power source technical field, high security and stability because automobile needs need to provide a kind of stand-by power supply of safety and stability as the automobile emergency power supply.At present automobile, truck need to be provided by the storage battery that automobile carries 12V voltage when engine start, and when the storage battery of car can't use, automobile just can't start, and the storage battery that just can replace automobile to carry with emergency power supply at this moment starts up the car.The advantageous characteristic of answering ferric phosphate lithium cell to have makes it become the better choosing of automobile standby power supply.In operating position, ferric phosphate lithium cell actual discharge performance at low temperatures far below the discharge performance under normal temperature, and descends along with the decline of temperature.When spending lower than 10, discharge capability is only the 70%-80% under room temperature; When-20 spent, discharge capability was only 10%～20% under room temperature; Only remain 2% when-30 spend.
Therefore, for the defects that exists in present prior art, be necessary to study in fact, so that a kind of scheme to be provided, solve the defective that exists in prior art, avoid causing the ferric phosphate lithium cell emergency power supply when the environment of low temperature uses, the problem that discharging efficiency is low.
The utility model content
For addressing the above problem, the purpose of this utility model is to provide a kind of LiFePO4 emergency power supply with preheat function, by detecting the temperature of ferric phosphate lithium cell, carry out preheating when lower temperature, solved the ferric phosphate lithium cell emergency power supply when the environment of low temperature uses, the problem that discharging efficiency is low.
For achieving the above object, the technical solution of the utility model is:
a kind of LiFePO4 emergency power supply with preheat function, comprise ferric phosphate lithium cell, further comprise polyimides electric heating piece warm-up block, 12V opens the jumping output module, 5V voltage stabilizing circuit, 5V general-purpose serial bus USB output module, micro-control unit MCU control circuit, the LCD display module, charger, charge control module and temperature detecting module, the output of described ferric phosphate lithium cell connects the input of temperature detecting module and the first input end of 5V voltage stabilizing circuit, the output of described 5V voltage stabilizing circuit connects the input of 5VUSB output module, the output of described temperature detecting module connects the second input of MCU control circuit, the first input end of described MCU control circuit connects the output of phosphoric acid iron hammer battery, the 3rd input of described MCU control circuit connects the first output of charge control module, the first output of described MCU control circuit connects the second input of 5V voltage stabilizing circuit, the second output of described MCU control circuit connects the input of polyimides electric heating piece warm-up block, described polyimides electric heating piece warm-up block is connected with described ferric phosphate lithium cell contact, the 3rd output of described MCU control circuit connects the first input end of charge control module, the 4th output of described MCU control circuit connects the input of LCD display module, the output of described charger is connected with the second input of described charge control module, the second output of described charge control module connects the input of ferric phosphate lithium cell.
Preferably, described MCU control circuit adopts singlechip chip EM78P260, its pin P52 is first input end, pin P52 is the second input, pin P64 is the 3rd input, and pin P57 is the first output, and pin P54 is the second output, pin P62 is the 3rd output, and pin P70 is the 4th output.
preferably, described polyimides electric heating piece warm-up block further comprises polyimides electric heating piece JP, the 11 resistance R 11, the 19 resistance R 19, the 22 resistance R 22, the 23 resistance R 23, the 6th metal-oxide-semiconductor Q6, one pin of described polyimides electric heating piece connects the output of ferric phosphate lithium cell, another pin of described polyimides electric heating piece connects the drain electrode of the 6th metal-oxide-semiconductor Q6, the source ground of described the 6th metal-oxide-semiconductor Q6, one end of described the 22 resistance R 22 connects 64 pins of singlechip chip EM78P260, the emitter of one end of described the 23 resistance R 23 and the 7th triode Q7 connects the 5V output voltage of 5V voltage stabilizing circuit, the other end of described the 22 resistance R 22 and the 23 resistance R 23 connects the base stage of the 7th triode Q7, the collector electrode of described the 7th triode Q7 connects the end of the 19 resistance R l9 and the end of the 11 resistance R ll, the other end of described the 11 resistance R ll connects the grid of the 6th metal-oxide-semiconductor, the source ground of the other end of described the 19 resistance and the 6th triode.
preferably, 5V voltage stabilizing circuit further comprises the second diode D2, the 4th capacitor C 4, integrated voltage-stabilized chip LM2596, the 3rd diode D3, inductance L and the 5th capacitor C 5, the anodic bonding I2V of described the second diode D2 opens the positive output terminal of jumping output module, the negative electrode of described the second diode D2 connects an end of the 4th capacitor C 4, the common port of described the second diode D2 and the 4th capacitor C 4 connects the first pin input end of LM2596, the output of described LM2596 connects the negative electrode of the 3rd diode D3 and an end of inductance L, the other end of described inductance L, one end of the feedback end of LM2596 and the 5th electric capacity links together as the output of 5V voltage stabilizing circuit, the other end of described the 4th electric capacity, the grounding pin of LM2596 and enable pin, the other end ground connection of the anode of the 3rd diode D3 and the 5th capacitor C 5.
preferably, described charge control module further comprises the second resistance R 2, the 3rd resistance R 3, the 8th resistance R 8, the 9th resistance R 9, the 12 resistance R I2, the 30 resistance R 30, the 31 resistance R 31, the first diode Dl, the first triode Q1, the 3rd triode Q3, the first capacitor C l, the output of one end connecting charger of the emitter of described the first triode Q1 and the second resistance R 2, the base stage of described the first triode Q1 is connected with the other end of the second resistance R 2 and an end of the 3rd resistance R 3, the other end of described the 3rd resistance R 3 connects the collector electrode of the 3rd triode Q3, the base stage of described the 3rd triode Q3 connects the 12 resistance R 12, the end of the 9th resistance R 9 and the first capacitor C l, the other end of described the 9th resistance R 9 is connected with the pin P64 of singlechip chip EM78P260, one end of the collector electrode of described the first triode Q1 and the 8th resistance R 8, one end of the 30 resistance R 30 and the anodic bonding of the first diode Dl, the other end of described the 30 resistance R 30 is connected with an end of the 31 resistance R 31, the negative electrode of described the first diode Dl connects the charging end of ferric phosphate lithium cell, the common port of described the 30 resistance R 30 and the 31 resistance R 31 connects the pin P62 of singlechip chip EM78P260, described the 8th resistance R 8, the 31 resistance R 31, the collector electrode of the 3rd triode Q3, the other end of the 12 resistance R 12, the other end ground connection of the first capacitor C l.
Compared with prior art, the utlity model has following beneficial effect:
(1) by warm-up block, ferric phosphate lithium cell is heated, improved the service efficiency of ferric phosphate lithium cell;
(2) the MCU control circuit can accurately detect the state of ferric phosphate lithium cell, charges accordingly or output action;
(3) 5V voltage stabilizing circuit, stable output, efficient is high.
Description of drawings
Fig. 1 is the theory diagram with the LiFePO4 emergency power supply of preheat function of the utility model embodiment;
Fig. 2 is the circuit structure diagram with the polyimides electric heating piece warm-up block in the LiFePO4 emergency power supply of preheat function of the utility model embodiment;
Fig. 3 is the circuit structure diagram with the metal-oxide-semiconductor protection module in the LiFePO4 emergency power supply of preheat function of the utility model embodiment;
Fig. 4 is the circuit structure diagram with the 5V voltage stabilizing circuit in the LiFePO4 emergency power supply of preheat function of the utility model embodiment;
Fig. 5 is the circuit structure diagram with the charge control module in the LiFePO4 emergency power supply of preheat function of the utility model embodiment.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
On the contrary, the utility model contain any by claim definition make on marrow of the present utility model and scope substitute, modification, equivalent method and scheme.Further, in order to make the public, the utility model is had a better understanding, in hereinafter details of the present utility model being described, detailed some specific detail sections of having described.Do not have for a person skilled in the art the description of these detail sections can understand the utility model fully yet.
with reference to figure 1, be depicted as the theory diagram with the LiFePO4 emergency power supply of preheat function of the utility model embodiment, it comprises ferric phosphate lithium cell 101, polyimides electric heating piece warm- up block 102, 12V opens and jumps output module 103, 5V voltage stabilizing circuit 104, 5V USB (UniveTsal Serial BUS, USB) output module 105, micro-control unit (MicTo Control Unit, MCU) control circuit 106, liquid crystal display (Liquid CTystal Display, LCD) display module 107, charger 108, charge control module 109 and temperature detecting module HO, the output of ferric phosphate lithium cell 101 connects the input of temperature detecting module HO and the first input end of 5V voltage stabilizing circuit 104, the output of 5V voltage stabilizing circuit 104 connects the input of 5VUSB output module 105, the output of temperature detecting module 11O connects the second input of MCU control circuit 106, the output of the first input end ferric phosphate lithium cell 101 of MCU control circuit 106, the 3rd input of MCU control circuit 106 connects the first output of charge control module 109, the first output of MCU control circuit 106 connects the second input of 5V voltage stabilizing circuit 104, the second output of MCU control circuit 106 connects the input of polyimides electric heating piece warm-up block 102, polyimides electric heating piece warm-up block 102 is connected with the ferric phosphate lithium cell contact, the 3rd output of MCU control circuit 106 connects the first input end of charge control module 109, the 4th output of MCU control circuit 106 connects the input of LCD display module 107, the output of charger 108 is connected with the second input of charge control module 109, the second output of charge control module 109 connects the input of ferric phosphate lithium cell 101.
By above annexation, ferric phosphate lithium cell 101,5V voltage stabilizing circuit 104 and 5VUSB output module form the output loop of one road 5VUSB interface; Ferric phosphate lithium cell 101 and l2V open and jump output module 103 composition 12V output loops; Charger 108, charge control module 109 and ferric phosphate lithium cell 101 form charge circuit; Ferric phosphate lithium cell 101, temperature detecting module 106, MCU control circuit 106 and polyimides electric heating piece warm-up block 102 form the preheating circuit of ferric phosphate lithium cell 101.The working method in each loop is carried out regulating and controlling by MCU control circuit 106, and its state shows by the LCD display module.Ferric phosphate lithium cell 101 forms by the more piece ferric phosphate lithium cell is monomer series-connected, and it provides the 12V Voltage-output.During lower than 12.7V, by the detection of MCU control circuit 106, LCD display module 107 needs charging to show when cell voltage; When after ferric phosphate lithium cell charging to its voltage during higher than 14.5V, by the detection of MCU control circuit 106, LCD display module 107 charges full the demonstration.
In a concrete application example, referring to Fig. 2, MCU control circuit 106 adopts singlechip chip EM78P260, its pin P52 is first input end, and pin P54 is the second input, and pin P64 is the 3rd input, pin P57 is the first output, pin P54 is the second output, and pin P62 is the 3rd output, and pin P70 is the 4th output.
referring to Fig. 3, polyimides electric heating piece warm-up block (102) further comprises the polyimides electric heating piece, the 11 resistance R 11, the 19 resistance R 19, the 22 resistance R 22, the 23 resistance R 23, the 6th metal-oxide-semiconductor Q6, one pin of polyimides electric heating piece connects the output of ferric phosphate lithium cell, another pin of polyimides electric heating piece connects the drain electrode of the 6th metal-oxide-semiconductor Q6, the source ground of the 6th metal-oxide-semiconductor Q6, one end of the 22 resistance R 22 connects 64 pins of singlechip chip EM78P260, the emitter of one end of the 23 resistance R 23 and the 7th triode Q7 connects the 5V output voltage of 5V voltage stabilizing circuit (104), the other end of the 22 resistance R 22 and the 23 resistance R 23 connects the base stage of the 7th triode Q7, the collector electrode of the 7th triode Q7 connects an end of the 19 resistance R 19 and the end of the 11 resistance R ll, the other end of the 11 resistance R 11 connects the grid of the 6th metal-oxide-semiconductor, the source ground of the other end of the 19 resistance R l9 and the 6th triode.The polyimides electric heating piece is by the moulding of heating resistor sheet, and the emission resistor disc is wrapped in the outside of ferric phosphate lithium cell, with ferric phosphate lithium cell surface applying.When the MCU chip detection is spent lower than 10 to the temperature of ferric phosphate lithium cell, start heater circuit the polyimides electric heating piece is heated, be heated to 15 stopped heatings when spending.Because in battery operated process, itself can heat radiation, therefore do not need temperature with battery to add to too high, in order to avoid affect the useful life of ferric phosphate lithium cell.
referring to Fig. 4, 5V voltage stabilizing circuit 104 further comprises the second diode D2, the 4th capacitor C 4, integrated voltage-stabilized chip LM2596, the 3rd diode D3, inductance L and the 5th capacitor C 5, the anodic bonding 12V of the second diode D2 opens the positive output terminal of jumping output module 103, the negative electrode of the second diode D2 connects an end of the 4th capacitor C 4, the common port of the second diode D2 and the 4th capacitor C 4 connects the first pin input end of LM2596, the output of LM2596 connects the negative electrode of the 3rd diode D3 and an end of inductance L, the other end of inductance L, one end of the feedback end of LM2596 and the 5th electric capacity links together as the output of 5V voltage stabilizing circuit 104, the other end of the 4th electric capacity, the grounding pin of LM2596 and enable pin, the other end ground connection of the anode of the 3rd diode D3 and the 5th capacitor C 5.
referring to Fig. 5, charge control module 109 further comprises the second resistance R 2, the 3rd resistance R 3, the 8th resistance R 8, the 9th resistance R 9, the 12 resistance R 12, the 30 resistance R 30, the 31 resistance R 31, the first diode Dl, the first triode Q1, the 3rd triode Q3, the first capacitor C l, the output of one end connecting charger 108 of the emitter of the first triode Q1 and the second resistance R 2, the base stage of the first triode Q1 is connected with the other end of the second resistance R 2 and an end of the 3rd resistance R 3, the other end of the 3rd resistance R 3 connects the collector electrode of the 3rd triode Q3, the base stage of the 3rd triode Q3 connects the 12 resistance R l2, the end of the 9th resistance R 9 and the first capacitor C l, the other end of the 9th resistance R 9 is connected with the pin P64 of singlechip chip EM78P260, one end of the collector electrode of the first triode Q1 and the 8th resistance R 8, one end of the 30 resistance R 30 and the anodic bonding of the first diode Dl, the other end of the 30 resistance R 30 is connected with an end of the 31 resistance R 31, the negative electrode of the first diode Dl connects the charging end of phosphoric acid iron hammer battery 101, the common port of the 30 resistance R 30 and the 31 resistance R 31 connects the pin P62 of singlechip chip EM78P260, the 8th resistance R 8, the 31 resistance R 31, the collector electrode of the 3rd triode Q3, the other end of the 12 resistance R 12, the other end ground connection of the first capacitor C l.
The above is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection range of the present utility model.
Claims (5)
1. LiFePO4 emergency power supply with preheat function, comprise ferric phosphate lithium cell (101), it is characterized in that, further comprise polyimides electric heating piece warm-up block (102), 12V opens and jumps output module (103), 5V voltage stabilizing circuit (104), 5V general-purpose serial bus USB output module (105), micro-control unit MCU control circuit (106), LCD display module (107), charger (108), charge control module (109) and temperature detecting module (110), the output of described ferric phosphate lithium cell (101) connects the input of temperature detecting module (110) and the first input end of 5V voltage stabilizing circuit (104), the output of described 5V voltage stabilizing circuit (104) connects the input of 5V general-purpose serial bus USB output module (105), the output of described temperature detecting module (110) connects the second input of MCU control circuit (106), the first input end of described MCU control circuit (106) connects the output of ferric phosphate lithium cell (101), the 3rd input of described MCU control circuit (106) connects the first output of charge control module (109), the first output of described MCU control circuit (106) connects the second input of 5V voltage stabilizing circuit (104), the second output of described MCU control circuit (106) connects the input of polyimides electric heating piece warm-up block (102), described polyimides electric heating piece warm-up block (102) is connected with described ferric phosphate lithium cell contact, the 3rd output of described MCU control circuit (106) connects the first input end of charge control module (109), the 4th output of described MCU control circuit (106) connects the input of LCD display module (107), the output of described charger (108) is connected with the second input of described charge control module (109), the second output of described charge control module (109) connects the input of ferric phosphate lithium cell (101).
2. the LiFePO4 emergency power supply with preheat function according to claim 1, it is characterized in that, described MCU control circuit (106) adopts singlechip chip EM78P260, its pin P52 is first input end, and pin P52 is the second input, and pin P64 is the 3rd input, pin P57 is the first output, pin P54 is the second output, and pin P62 is the 3rd output, and pin P70 is the 4th output.
3. the LiFePO4 emergency power supply with preheat function according to claim 2, it is characterized in that, described polyimides electric heating piece warm-up block (102) further comprises polyimides electric heating piece JP, the 11 resistance R ll, the 19 resistance R 19, the 22 resistance R 22, the 23 resistance R 23, the 6th MOS pipe Q6, one pin of described polyimides electric heating piece connects the output of ferric phosphate lithium cell, another pin of described polyimides electric heating piece connects the drain electrode of the 6th metal-oxide-semiconductor Q6, the source ground of described the 6th metal-oxide-semiconductor Q6, one end of described the 22 resistance R 22 connects 64 pins of singlechip chip EM78P260, the emitter of one end of described the 23 resistance R 23 and the 7th triode Q7 connects the 5V output voltage of 5V voltage stabilizing circuit (104), the other end of described the 22 resistance R 22 and the 23 resistance R 23 connects the base stage of the 7th triode Q7, the collector electrode of described the 7th triode Q7 connects the end of the 19 resistance R l9 and the end of the 11 resistance R ll, the other end of described the 11 resistance R ll connects the grid of the 6th metal-oxide-semiconductor, the source ground of the other end of described the 19 resistance and the 6th triode.
4. according to claim 2 or 3 described LiFePO4 emergency power supplies with preheat function, it is characterized in that, 5V voltage stabilizing circuit (104) further comprises the second diode D2, the 4th capacitor C 4, integrated voltage-stabilized chip LM2596, the 3rd diode D3, inductance L and the 5th capacitor C 5, the anodic bonding 12V of described the second diode D2 opens the positive output terminal of jumping output module (103), the negative electrode of described the second diode D2 connects an end of the 4th capacitor C 4, the common port of described the second diode D2 and the 4th capacitor C 4 connects the first pin input end of LM2596, the output of described LM2596 connects the negative electrode of the 3rd diode D3 and an end of inductance L, the other end of described inductance L, one end of the feedback end of LM2596 and the 5th electric capacity links together as the output of 5V voltage stabilizing circuit (104), the other end of described the 4th electric capacity, the grounding pin of LM2596 and enable pin, the other end ground connection of the anode of the 3rd diode D3 and the 5th capacitor C 5.
5. according to claim 2 or 3 described LiFePO4 emergency power supplies with preheat function, it is characterized in that, described charge control module (109) further comprises the second resistance R 2, the 3rd resistance R 3, the 8th resistance R 8, the 9th resistance R 9, the 12 resistance R 12, the 30 resistance R 30, the 31 resistance R 31, the first diode Dl, the first triode Q1, the 3rd triode Q3, the first capacitor C l, the output of one end connecting charger (108) of the emitter of described the first triode Q1 and the second resistance R 2, the base stage of described the first triode Q1 is connected with the other end of the second resistance R 2 and an end of the 3rd resistance R 3, the other end of described the 3rd resistance R 3 connects the collector electrode of the 3rd triode Q3, the base stage of described the 3rd triode Q3 connects the 12 resistance R 12, the end of the 9th resistance R 9 and the first capacitor C l, the other end of described the 9th resistance R 9 is connected with the pin P64 of singlechip chip EM78P260, one end of the collector electrode of described the first triode Q1 and the 8th resistance R 8, one end of the 30 resistance R 30 and the anodic bonding of the first diode Dl, the other end of described the 30 resistance R 30 is connected with an end of the 31 resistance R 31, the negative electrode of described the first diode D1 connects the charging end of ferric phosphate lithium cell (101), the common port of described the 30 resistance R 30 and the 31 resistance R 31 connects the pin P62 of singlechip chip EM78P260, described the 8th resistance R 8, the 31 resistance R 31, the collector electrode of the 3rd triode Q3, the other end of the 12 resistance R l2, the other end ground connection of the first capacitor C l.
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| CN2013202262902U CN203278304U (en) | 2013-04-28 | 2013-04-28 | Lithium iron phosphate emergency power supply with preheating function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103795150A (en) * | 2014-03-07 | 2014-05-14 | 山东圣阳电源股份有限公司 | Hybrid energy storage system and application method thereof |
| CN104393367A (en) * | 2013-11-28 | 2015-03-04 | 东莞市云帆电子科技有限公司 | Preheating system of automobile emergency start power supply |
-
2013
- 2013-04-28 CN CN2013202262902U patent/CN203278304U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104393367A (en) * | 2013-11-28 | 2015-03-04 | 东莞市云帆电子科技有限公司 | Preheating system of automobile emergency start power supply |
| CN103795150A (en) * | 2014-03-07 | 2014-05-14 | 山东圣阳电源股份有限公司 | Hybrid energy storage system and application method thereof |
| CN103795150B (en) * | 2014-03-07 | 2016-04-20 | 山东圣阳电源股份有限公司 | A kind of mixed energy storage system and application process thereof |
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