CN202918064U - Novel super capacitor managing system - Google Patents
Novel super capacitor managing system Download PDFInfo
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- CN202918064U CN202918064U CN 201220511328 CN201220511328U CN202918064U CN 202918064 U CN202918064 U CN 202918064U CN 201220511328 CN201220511328 CN 201220511328 CN 201220511328 U CN201220511328 U CN 201220511328U CN 202918064 U CN202918064 U CN 202918064U
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Abstract
The utility model relates to a novel super capacitor managing system, comprising a charging circuit, a balancing circuit, a super capacitor, a voltage stabilizing circuit, an automatic switching module, a control switch and a constant voltage circuit. 5V power supply is connected with the charging circuit, the voltage stabilizing circuit and the automatic switching circuit, output of the charging circuit is connected with the balancing circuit, and output of the balancing circuit is connected with the super capacitor and the automatic switching module; output of the voltage stabilizing circuit is connected with the control switch, the constant voltage circuit and the automatic switching module; output VBAT of the control switch is controlled; and output of the constant current is constant in 3.3V.
Description
Technical field
The utility model relates to a kind of energy-accumulating medium, is specifically related to a kind of Novel super capacitance management system.
Background technology
" Internet of Things concept " is on the basis of " the Internet concept ", its user side is extended and expands between any article and the article, carries out information exchange and a kind of network concept of communicating by letter, and realizes information mutual communication between people and thing, thing and the thing.Transducer is provided on the various real-world objects makes it have wisdom, the wisdom object is by the perception self of operation for embedded system specific program and external information, and perception is the process that people and thing, thing and thing carry out information mutual communication.
The wisdom object uses the connection intelligent terminals such as RS422/485 bus, fieldbus, CAN bus, ZigBee technology to be built into an intelligentized local thing contact system, give local thing connection system configuration corresponding internet interface, be connected on the Internet, realize that just the Internet is to the expansion of Internet of Things.
Mobile network's fast development, the portable terminal-cellphone subscriber who is applicable to the people is developed rapidly, and the function of mobile phone is in continuous enhancing, and movement is interconnected to be popularized, and current people have be unable to do without mobile phone.The appearance of wisdom object, must need to use a kind of mobile terminal device that the wisdom object uses-thing machine that is appropriate to, the difference of thing machine and mobile phone maximum is the object that uses, and causing one of can not be as mobile phone fast-developing bottleneck of thing machine is the battery that the thing machine uses.
The thing machine is to utilize the GSM network, and take gsm module as core, configuration MCU, communication interface and power supply etc. are applied to the mobile communication terminal device of real-world object, although the thing machine is mobile communication terminal device, it is relatively-stationary after installing.The thing machine is the remote controlled terminal for the people, the situation of reflection telemonitoring real-world object.Power supply is the power of all surveillance equipments of real-world object or system, and therefore, the monitoring of power failure (power failure) and warning are the functions of thing machine indispensability.
The thing machine is continued to use at first mobile phone and is adopted lithium battery as energy-accumulating medium, and by the checking of practical application, it is worthless as energy-accumulating medium that the finding machine uses lithium battery.As using the thing machine to report to the police in the city street lamp cable anti-theft alarm, it is few etc. that final because lithium battery low temperature discharges and recharges number of times not, fully, so that thing machine fault in actual application is too many, maintenance capacity is huge; Also because the lithium battery problem has reduced the reliability of equipment, lithium battery becomes one of Main Bottleneck that the thing machine applies in the household safety alarm system, and main cause is:
(1) the complete impulse electricity number of times of lithium battery can only restrict the life-span of equipment about 300 times, causes the maintenance of post facility huge, to such an extent as to the equipment that hindered carries out large scale application;
(2) discharging efficiency of lithium battery and ambient temperature have much relations, can't solve the application of low temperature environment for the equipment of outdoor round-the-clock application.
Super capacitor is that developed recently is planted large capacity energy-storage travelling wave tube fast, compare with common batteries, have the power density height, the characteristics such as the time that discharges and recharges is short, efficient is high, long service life, clean environment firendly, increasingly extensive in the application in the fields such as electric automobile, new forms of energy.
For the mobile terminal device that this real-world object of thing machine uses, super capacitor can replace lithium battery fully as the energy-accumulating medium of thing machine, the two be compared as follows:
1. 5. super capacitor has super wide temperature applicable range, usually can reach-40 ℃～85 ℃; And general battery is
-20℃～60℃。；
2. the super capacitor high rate during charging-discharging is superior, power density (Power Density) be lithium ion battery decades of times with
On;
3. super capacitor discharges and recharges the time weak point, and charging circuit is simple, need not current limliting and discharges and recharges control loop, memory-less effect.
Secondary cell is limited by charging and discharging currents, and the charging interval is long, generally need several hours to tens hours, and double electric layer capacitor is not subjected to charge-current limit, and quickly-chargeable can be full of in several seconds to tens seconds;
4. super capacitor has extra long life, discharges and recharges greater than 500,000 times, is 500 times of Li-Ion battery, be Ni-MH and
1000 times of Ni-Cd battery, if super capacitor is discharged and recharged 20 times every day, use can reach 68 years continuously.
Although super capacitor has many advantages, the application of super capacitor in the thing machine also exists following problem:
How to adopt super capacitor to replace lithium battery applications to the thing machine, break through because the lithium battery limitation causes the in actual applications low bottleneck of reliability of thing machine, this is the direction of art technology research.
The thing machine is that mobile phone is expanded the product that is applied to the wisdom object, and it is fixedly installed on the wisdom object, moves with the movement of wisdom object, has relatively-stationary characteristics; Take data communication as main, take into account voice and video between wisdom object and the thing machine; Because the wisdom of wisdom object is inadequate, the thing machine need to possess from the ability that detects GSM network, power supply, can realize selfreparing or warning to fault, realizes these functions, and energy-accumulating medium is thing machine indispensability.
The energy-accumulating medium of known substance machine is battery, and energy-accumulating medium-lithium battery that mobile phone uses is the foundation that thing machine designer continues to use.Although use lithium battery on the relevant mobile phone supporting to discharge and recharge device all very ripe, but because the thing machine is different from the use object of mobile phone, that is to say: the use of thing machine is to liking the wisdom object, the use of mobile phone is to liking the people, the wisdom of wisdom object also can't be compared with the people at present, there is serious defective in the lithium battery that causes generally using on the mobile phone in the application of thing machine, becomes the bottleneck that promotes thing machine reliability index.
Super capacitor is used for the special market between conventional electric capacity and the battery always, and along with the discovery of how new application, this special market is also in continuous growth.In data-storage applications, super capacitor is replacing battery, comprises 3.3V Memory Backup solid state hard disc (SSD), battery powered Portable industrial and Medical Devices, industrial alarms device and intelligent power meter.
The VBAT of gsm module adopts 3.4V to the single power supply of 4.5V in the thing machine.In some cases, bursting of signal transmission can cause voltage to fall, and at this moment the peak value of current loss can reach 2A, and therefore, power supply must can provide the electric current that enough arrives 2A.
Because the magnitude of voltage of super capacitor very low (3V is following), single super capacitor can not satisfy gsm module required voltage requirement (3.4V is to 4.5V) in the thing machine, therefore, needs two super capacitors to connect and could satisfy.Because the restriction of production technology, super capacitor can't be accomplished the evenly absolute of material in manufacture process, cause the dispersiveness of each super capacitor monomer parameter.The super capacitor of two tandem workings, there is difference in voltage on the different super capacitor monomers, i.e. two kinds of unhealthy conditions of overvoltage and under voltage.Overvoltage condition will shorten the life-span of super capacitor, can blast when serious, and be in the ultracapacitor of under-voltage state, and its capacity can not take full advantage of, and has waste.So must introduce technology of pressure equalization to 2 super capacitance group of series connection that the thing machine uses, with reliability and the utilance of raising super capacitor group, and the useful life of prolongation super capacitor.
A kind of simple solution is to use the Li Erte super capacitor charger scheme of insulting, LTC3226 is a noninductive super capacitor charger, power path controller with backup, use the input power of 2.5-5.5V to the super capacitor charging of two joint series connection, and charge to the super capacitor charging voltage able to programme of 2.5-5.3V.The automatic capacitance balance of this device and voltage clamping function can keep the voltage on the two joint super capacitors to equate.But carefully analyze the voltage clamp circuit of LTC3226, find that it is not suitable for using, and mainly is in the thing machine:
1. the outfit of LTC3226 charge pump is the maximum admissible of a 2.65V for the limiting voltage with any super capacitor two ends
The circuit of predeterminated voltage.Utilizing it to solve the thing machine, to use super capacitor be feasible as the charging of storage medium, if but consider from thing electromechanical source overall system, because LTC3226 is general-purpose device, for the definite application of thing machine parameter, not only need by after capacitance-resistance calculating, the debugging, could determine the peripheral circuit configuration of LTC3226, and use the reasons such as the power of LDO pressurizer of LTC3226 is little can't satisfy the power demands of thing machine, not use the LDO pressurizer of LTC3226 to cause waste.
2. LTC3226's is on the high side.
The utility model content
For above problem the utility model provide a kind of discharge and recharge the time short, efficient is high, the Novel super capacitance management system of long service life, clean environment firendly.
Provide a kind of Novel super capacitance management system in order to overcome the above problems the utility model, it is characterized in that: described super capacitance management module comprises charging circuit, balancing circuitry, super capacitor, voltage stabilizing circuit, automatic switching module, control switch, constant voltage circuit;
5V links to each other with charging circuit, voltage stabilizing circuit and automatic switching module, and the output of charging circuit links to each other with balancing circuitry, and the output of balancing circuitry links to each other with automatic switching module with super capacitor; The output of voltage stabilizing circuit links to each other with control switch, constant voltage circuit and automatic switching module; The output VBAT of control switch is in check; The 3.3V that constant voltage circuit output is constant.
The single-unit super capacitor of described super capacitor is chosen as 30F.
Described charging circuit adopts CN3068, voltage stabilizing circuit to adopt MIC29302BU, automatic switching module and control switch to adopt RF7416, constant voltage circuit to adopt SP6650, balancing circuitry to adopt XC61CN2202MR and XP161A1355PR.
Described charging circuit is comprised of electrochemical capacitor E4, battery management chip P3, electrochemical capacitor E5 and resistance R 6, and the anode of electrochemical capacitor E4 links to each other with the VCC of battery management chip P3 and receives+5V, and the negative terminal of electrochemical capacitor E4 is connected with ground; The FB of battery management chip P3 links to each other with electrochemical capacitor E5 anode with BAT and exports 4.2V, one end of the negative terminal of the TEMP of battery management chip P3, GND, electrochemical capacitor E5, resistance R 6 links to each other and receives ground, and the IR of battery management chip P3 links to each other with the other end of resistance R 6.
Described balancing circuitry is by comparator P6, metal-oxide-semiconductor P7, comparator P8, metal-oxide-semiconductor P9, resistance R 13, resistance R 14, resistance R 15, resistance R 16 forms, BAT+ is connected to the S of metal-oxide-semiconductor P7, one end of resistance R 13, one end of resistance R 14, the anode of super capacitor CA, the other end of resistance R 13 is linked the VIN of comparator P6, the OUT of comparator P6 links the G of metal-oxide-semiconductor P7, the other end of resistance R 14, the negative terminal of the VSS of comparator P6 and super capacitor CA, the D of metal-oxide-semiconductor P7, the S of metal-oxide-semiconductor P9, one end of resistance R 15, the anode of super capacitor CB links to each other, the other end of resistance R 15 links to each other with the VIN of comparator P8, the OUT of comparator P8 links the G of metal-oxide-semiconductor P9, the other end of resistance R 16, the negative terminal of the VSS of comparator P8 and super capacitor CB, the D of metal-oxide-semiconductor P9 links to each other and is connected to ground; Super capacitor is comprised of super capacitor CA and super capacitor CB;
Described voltage stabilizing circuit is comprised of electrochemical capacitor E1, voltage stabilizing chip P1, resistance R 1, resistance R 2, electrochemical capacitor E2, capacitor C 1, resistance R 3, the anode of electrochemical capacitor E1 links to each other with EN with the IN of voltage stabilizing chip P1 and receives+5V, and the ADJ of voltage stabilizing chip P1 links to each other with an end of an end of resistance R 1, resistance R 2; One end of the anode of the OUT of voltage stabilizing chip P1 and the other end of resistance R 2, electrochemical capacitor E2, an end of capacitor C 1, the resistance R 3 output 4.2V stabilized voltage power supply that links to each other, the other end of the other end of the GND of voltage stabilizing chip P1 and the negative terminal of electrochemical capacitor E1, resistance R 1, the negative terminal of electrochemical capacitor E2, capacitor C 1, the other end of resistance R 3 link to each other and receive ground;
Described automatic switching module is comprised of MOS chip P4 and resistance R 7, MOS chip P4 adopts nmos device IRF7416, and the G of MOS chip P4 links to each other with an end of resistance R 7 and receives+5V, the other end ground connection of resistance R 7, the S of MOS chip P4 receives 4.2V, and the D of MOS chip P4 receives BAT+;
Described control switch is comprised of MOS chip P2, resistance R 4, resistance R 5, electrochemical capacitor E3, MOS chip P2 adopts nmos device IRF7416, one end phase of the G of MOS chip P2 and resistance R 5, connect, the S of MOS chip P2 links to each other with an end of resistance R 4 and receives 4.2V, the D of MOS chip P4 links to each other with the anode of electrochemical capacitor E3 and exports BATT, the negativing ending grounding of electrochemical capacitor E3, and the other end of resistance R 4 and resistance R 5 other ends are connected to PCCTL;
Described constant voltage circuit is by resistance R 8, resistance R 9, capacitor C 2, electrochemical capacitor E6, voltage stabilizing chip P5, inductance L, resistance R 10, capacitor C 3, resistance R 11, resistance R 12, E7 forms, voltage stabilizing chip P5 adopts the SP6650 configuration peripheral components of SIPEX that constant 3.3V is provided, the PVIN of voltage stabilizing chip P5, the ILM anode with electrochemical capacitor E6 that links to each other with SHDN, one end of resistance R 9, one end of resistance R 8 is connected to 4.2V, the other end of resistance R 9 links to each other with an end of capacitor C 2, the other end ground connection of capacitor C 2, the LX of voltage stabilizing chip P5 and an end of inductance L, one end of resistance R 10 links to each other, one end of the other end of inductance L and capacitor C 3, the anode of E7, the VOUT of voltage stabilizing chip P5 links to each other and output 3.3V, the other end of the other end of resistance R 10 and capacitor C 3, one end of resistance R 11 links to each other, the FB of the other end of resistance R 11 and voltage stabilizing chip P5, one end of resistance R 12, the negative terminal of E7, the PGND of voltage stabilizing chip P5, the GND of voltage stabilizing chip P5 links to each other and receives ground.
Beneficial effect: power-supply system is the power source of thing machine, and super capacitance management system is the energy-accumulating medium of power-supply system, and after the input dead electricity of power-supply system, the thing machine relies on the energy storage of super capacitance management system to finish SMS alarm.Adopt super capacitance management system rather than lithium battery to carry out energy storage, make not only applicable adverse circumstances of thing machine, and overcome the restriction in lithium cell charging life-span.
This super capacitance management system has the 3.3V of reserve with the 5V input voltage by conversion and energy storage output and can control the VBAT (3.6-4.2V) of output.Energy-accumulating medium uses the super capacitors of two joint 2.7V to substitute the single-lithium-battery pond, overcome lithium battery as thing machine energy-accumulating medium in the defective aspect life-span and the low temperature.
Description of drawings
Fig. 1 is the composition frame chart of this super capacitance management system;
Fig. 2 is the embodiment circuit diagram of this super capacitance management system.
Embodiment
The utility model will be further described below in conjunction with accompanying drawing.
As shown in Figure 1,
A kind of Novel super capacitance management systemComprise charging circuit, balancing circuitry, super capacitor, voltage stabilizing circuit, automatic switching module, control switch, constant voltage circuit;
5V links to each other with charging circuit, voltage stabilizing circuit and automatic switching module, and the output of charging circuit links to each other with balancing circuitry, and the output of balancing circuitry links to each other with automatic switching module with super capacitor; The output of voltage stabilizing circuit links to each other with control switch, constant voltage circuit and automatic switching module; The output VBAT of control switch is in check; The 3.3V that constant voltage circuit output is constant.
Super capacitor:The calculation of capacity of the super capacitor series connection of two joint 2.7V, in order to dwindle the overall volume of thing machine, it is crucial selecting suitable super capacitor capacity.In order to guarantee that the thing machine externally relies on super capacitor energy-storage to send the SMS alarm signal after the dead electricity, sends at most 16 alarming short messages.Be the average time that sends after tested 1 alarming short message: 1.5s, be the average time that sends continuously: 2.2s, therefore, the time that sends 16 alarming short messages is: 35.2s, thing machine required average current when sending note is: 250mA.35.2sX250mA=8800mAs=8.8As。The voltage range that the thing machine sends note is: 4.2V-3.6V=0.6V; The capacity of two joint serial connected super electric capacity are: 8.8As/0.6V=14.67F rounds and is 15F.Therefore, the single-unit super capacitor is chosen as 30F.
As shown in Figure 2, the main IC model of each several part is: charging circuit (CN3068), voltage stabilizing circuit (MIC29302BU), automatic switching module and control switch (IRF7416), constant voltage circuit (SP6650), balancing circuitry (XC61CN2202MR and XP161A1355PR).
Charging circuit (CN3068):From the cost control design, according to the requirement of VBAT (3.6-4.2V), the single-lithium-battery pond of choice for use maturation charging integrated circuit.Experimental verification: the lithium cell charging integrated circuit of domestic 500 milliamperes of usb compatibles
CN3068Satisfy the design needs fully.
CN3068 is the charger circuit that can carry out to the single-unit chargeable lithium cell constant current/constant voltage charging.This device inside comprises power transistor, does not need outside current sense resistor and choked flow diode during application.CN3068 only needs few peripheral component, and meets the usb bus technical specification, is very suitable for the field of portable use.Hot modulation circuit can be at the power dissipation ratio of device large or ambient temperature chip temperature is controlled in the safe range in higher.Charging current is by a non-essential resistance setting.When the input voltage power down, CN3068 enters the sleep pattern of low-power consumption automatically, and the current drain of battery is less than 3 microamperes at this moment.Other function comprises excessively low latching of input voltage, automatically recharges cell-temperature monitoring and charged state/functions such as charging done state indication.CN3068 adopts the little outline packages of 8 pins (SOP8).
Although CN3068 has the constant voltage charge voltage of inner fixedly 4.2V and can pass through two kinds of patterns of resistance adjustment constant voltage charge voltage of an outside, but in actual use when using non-essential resistance to adjust constant voltage charge voltage, owing to chip internal with outside temperature is inconsistent and reasons such as process deviation during chip production, may cause the deterioration in accuracy of output voltage and temperature coefficient to become large.Simultaneously, because the need outer meeting resistance not only increases material, assembly cost, the more important thing is the difficulty that has increased debugging.Therefore, in the utility model, adopt the inner fixedly constant voltage charge voltage mode of 4.2V of CN3068.
Balancing circuitry (XC61CN2202MR and XP161A1355PR):
Select to adopt the super capacitor series connection of two joint 2.7V, existing two joint 2.7V super capacitor series mould set adopt voltage comparator, NMOSFET and resistance to realize balancing circuitry, but select the comparator of 2.6V in the selection of voltage comparator, therefore, the voltage of two joint 2.7V super capacitor series mould set is 2.6x2=5.2V, is not inconsistent compound machine 4.2V.The precision of the XC61C of TOREX series high accuracy, low power consumption voltage comparator is: ± 2%, reference voltage detection from 1.6V to 6V, stepping 0.1V, operating voltage range 0.7V is to 10.0V.The index of the selection of XC61C model is calculated:
(1) voltage detecting value
Be that the charging voltage of ± 2%, CN3068 is 4.2V according to the precision of XC61C, that is:
The ceiling voltage of two joint serial connected super electric capacity: 4.2Vx (1+2%)=4.284V;
The minimum voltage of two joint serial connected super electric capacity: 4.2Vx (1-2%)=4.116V;
For the ceiling voltages that guarantee two joint serial connected super electric capacity reach 4.2V, therefore, the voltage detecting value of single-unit should be 4.284V/2=2.142V.
(2) the XC61C model is determined
From 1.6V to 6V, stepping 0.1V determines the model of XC61C, so we select 2.2V the most suitable according to reference voltage detection.Concrete model is: XC61CN2202MR.
XP161A1355PR is N MOS power switch, is used with XC61CN2202MR, by the output control XP161A1355PR conducting of XC61CN2202MR, realizes the equilibrium charging of two assistant warden capacitances in series modules.
As shown in Figure 2, the utility model implementation case comprises charging circuit, balancing circuitry, super capacitor, voltage stabilizing circuit, automatic switching module, control switch, constant voltage circuit;
Charging circuit is comprised of electrochemical capacitor E4, battery management chip P3, electrochemical capacitor E5 and resistance R 6, and the anode of electrochemical capacitor E4 links to each other with the VCC of, battery management chip P3 and receives+5V, and the negative terminal of electrochemical capacitor E4 is connected with ground; The FB of battery management chip P3 links to each other with electrochemical capacitor E5 anode with BAT and exports 4.2V, one end of the negative terminal of the TEMP of battery management chip P3, GND, electrochemical capacitor E5, resistance R 6 links to each other and receives ground, and the IR of battery management chip P3 links to each other with the other end of resistance R 6;
Balancing circuitry is by comparator P6, metal-oxide-semiconductor P7, comparator P8, metal-oxide-semiconductor P9, resistance R 13, resistance R 14, resistance R 15, resistance R 16 forms, BAT+ is connected to the S of metal-oxide-semiconductor P7, one end of resistance R 13, one end of resistance R 14, the anode of super capacitor CA, the other end of resistance R 13 is linked the VIN of comparator P6, the OUT of comparator P6 links the G of metal-oxide-semiconductor P7, the other end of resistance R 14, the negative terminal of the VSS of comparator P6 and super capacitor CA, the D of metal-oxide-semiconductor P7, the S of metal-oxide-semiconductor P9, one end of resistance R 15, the anode of super capacitor CB links to each other, the other end of resistance R 15 links to each other with the VIN of comparator P8, the OUT of comparator P8 links the G of metal-oxide-semiconductor P9, the other end of resistance R 16, the negative terminal of the VSS of comparator P8 and super capacitor CB, the D of metal-oxide-semiconductor P9 links to each other and is connected to ground; Super capacitor is comprised of super capacitor CA and super capacitor CB;
Voltage stabilizing circuit is comprised of electrochemical capacitor E1, voltage stabilizing chip P1, resistance R 1, resistance R 2, electrochemical capacitor E2, capacitor C 1, resistance R 3, the anode of electrochemical capacitor E1 links to each other with EN with the IN of voltage stabilizing chip P1 and receives+5V, and the ADJ of voltage stabilizing chip P1 links to each other with an end of an end of resistance R 1, resistance R 2; One end of the anode of the OUT of voltage stabilizing chip P1 and the other end of resistance R 2, electrochemical capacitor E2, an end of capacitor C 1, the resistance R 3 output 4.2V stabilized voltage power supply that links to each other, the other end of the other end of the GND of voltage stabilizing chip P1 and the negative terminal of electrochemical capacitor E1, resistance R 1, the negative terminal of electrochemical capacitor E2, capacitor C 1, the other end of resistance R 3 link to each other and receive ground;
Automatic switching module is comprised of MOS chip P4 and resistance R 7, MOS chip P4 adopts nmos device IRF7416, and the G of MOS chip P4 links to each other with an end of resistance R 7 and receives+5V, the other end ground connection of resistance R 7, the S of MOS chip P4 receives 4.2V, and the D of MOS chip P4 receives BAT+;
Control switch is comprised of MOS chip P2, resistance R 4, resistance R 5, electrochemical capacitor E3, MOS chip P2 adopts nmos device IRF7416, one end phase of the G of MOS chip P2 and resistance R 5, connect, the S of MOS chip P2 links to each other with an end of resistance R 4 and receives 4.2V, the D of MOS chip P4 links to each other with the anode of electrochemical capacitor E3 and exports BATT, the negativing ending grounding of electrochemical capacitor E3, and the other end of resistance R 4 and resistance R 5 other ends are connected to PCCTL;
Constant voltage circuit is by resistance R 8, resistance R 9, capacitor C 2, electrochemical capacitor E6, voltage stabilizing chip P5, inductance L, resistance R 10, capacitor C 3, resistance R 11, resistance R 12, electrochemical capacitor E7 forms, voltage stabilizing chip P5 adopts the SP6650 configuration peripheral components of SIPEX that constant 3.3V is provided, the PVIN of voltage stabilizing chip P5, the ILM anode with electrochemical capacitor E6 that links to each other with SHDN, one end of resistance R 9, one end of resistance R 8 is connected to 4.2V, the other end of resistance R 9 links to each other with an end of capacitor C 2, the other end ground connection of capacitor C 2, the LX of voltage stabilizing chip P5 and an end of inductance L, one end of resistance R 10 links to each other, one end of the other end of inductance L and capacitor C 3, the anode of electrochemical capacitor E7, the VOUT of voltage stabilizing chip P5 links to each other and output 3.3V, the other end of the other end of resistance R 10 and capacitor C 3, one end of resistance R 11 links to each other, the FB of the other end of resistance R 11 and voltage stabilizing chip P5, one end of resistance R 12, the negative terminal of electrochemical capacitor E7, the PGND of voltage stabilizing chip P5, the GND of voltage stabilizing chip P5 links to each other and receives ground.
The utility model possesses following advantage:
1. the utility model adopts the realization of cellular li-ion battery charging management chip to the restriction of two joint super capacitors series connection both end voltage, according to
The requirement of VBAT input voltage range is controlled its charging voltage at 4.2V.And this charging management chip not only shipment amount is large, and price is low.
Equilibrium charging circuit when 2. the utility model adopts voltage comparator and MOSFET to realize two joint super capacitor series connection is according to thing
Machine is limited in 4.2V to two joint super capacitor series connection two ends charging voltages, and we can select to decide the comparator of voltage, and not only precision is high, and price might as well.
The above is preferred embodiment of the present utility model only, is not restricted to the utility model, and for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the claim scope of the present utility model.
Claims (9)
1. Novel super capacitance management system, it is characterized in that: described super capacitance management module comprises charging circuit, balancing circuitry, super capacitor, voltage stabilizing circuit, automatic switching module, control switch, constant voltage circuit;
5V links to each other with charging circuit, voltage stabilizing circuit and automatic switching module, and the output of charging circuit links to each other with balancing circuitry, and the output of balancing circuitry links to each other with automatic switching module with super capacitor; The output of voltage stabilizing circuit links to each other with control switch, constant voltage circuit and automatic switching module; The output VBAT of control switch is in check; The 3.3V that constant voltage circuit output is constant.
2. a kind of Novel super capacitance management system according to claim 1, it is characterized in that: the single-unit super capacitor of described super capacitor is chosen as 30F.
3. a kind of Novel super capacitance management system according to claim 1 is characterized in that: described charging circuit employing CN3068, voltage stabilizing circuit employing MIC29302BU, automatic switching module and control switch employing RF7416, constant voltage circuit employing SP6650, balancing circuitry employing XC61CN2202MR and X voltage stabilizing chip P161A1355PR.
4. according to claim 1 or 3 described a kind of Novel super capacitance management systems, it is characterized in that: described charging circuit is comprised of electrochemical capacitor E4, battery management chip P3, electrochemical capacitor E5 and resistance R 6, the anode of electrochemical capacitor E4 links to each other with the VCC of battery management chip P3 and receives+5V, and the negative terminal of electrochemical capacitor E4 is connected with ground; The FB of battery management chip P3 links to each other with electrochemical capacitor E5 anode with BAT and exports 4.2V, one end of the negative terminal of the TEMP of battery management chip P3, GND, electrochemical capacitor E5, resistance R 6 links to each other and receives ground, and the IR of battery management chip P3 links to each other with the other end of resistance R 6.
5. according to claim 2 or 4 described a kind of Novel super capacitance management systems, it is characterized in that: described balancing circuitry is by comparator P6, metal-oxide-semiconductor P7, comparator P8, metal-oxide-semiconductor P9, resistance R 13, resistance R 14, resistance R 15, resistance R 16 forms, BAT+ is connected to the S of metal-oxide-semiconductor P7, one end of resistance R 13, one end of resistance R 14, the anode of super capacitor CA, the other end of resistance R 13 is linked the VIN of comparator P6, the OUT of comparator P6 links the G of metal-oxide-semiconductor P7, the other end of resistance R 14, the negative terminal of the VSS of comparator P6 and super capacitor CA, the D of metal-oxide-semiconductor P7, the S of metal-oxide-semiconductor P9, one end of resistance R 15, the anode of super capacitor CB links to each other, the other end of resistance R 15 links to each other with the VIN of comparator P8, the OUT of comparator P8 links the G of metal-oxide-semiconductor P9, the other end of resistance R 16, the negative terminal of the VSS of comparator P8 and super capacitor CB, the D of metal-oxide-semiconductor P9 links to each other and is connected to ground; Super capacitor is comprised of super capacitor CA and super capacitor CB.
6. according to claim 2 or 4 described a kind of Novel super capacitance management systems, it is characterized in that: described voltage stabilizing circuit is comprised of electrochemical capacitor E1, voltage stabilizing chip P1, resistance R 1, resistance R 2, electrochemical capacitor E2, capacitor C 1, resistance R 3, the anode of electrochemical capacitor E1 links to each other with EN with the IN of voltage stabilizing chip P1 and receives+5V, and the ADJ of voltage stabilizing chip P1 links to each other with an end of an end of resistance R 1, resistance R 2; One end of the anode of the OUT of voltage stabilizing chip P1 and the other end of resistance R 2, electrochemical capacitor E2, an end of capacitor C 1, the resistance R 3 output 4.2V stabilized voltage power supply that links to each other, the other end of the other end of the GND of voltage stabilizing chip P1 and the negative terminal of electrochemical capacitor E1, resistance R 1, the negative terminal of electrochemical capacitor E2, capacitor C 1, the other end of resistance R 3 link to each other and receive ground.
7. according to claim 2 or 4 described a kind of Novel super capacitance management systems, it is characterized in that: described automatic switching module is comprised of MOS chip P4 and resistance R 7, MOS chip P4 adopts nmos device IRF7416, the G of MOS chip P4 links to each other with an end of resistance R 7 and receives+5V, the other end ground connection of resistance R 7, the S of MOS chip P4 receives 4.2V, and the D of MOS chip P4 receives BAT+.
8. according to claim 2 or 4 described a kind of Novel super capacitance management systems, it is characterized in that: described control switch is comprised of MOS chip P2, resistance R 4, resistance R 5, electrochemical capacitor E3, MOS chip P2 adopts nmos device IRF7416, one end phase of the G of MOS chip P2 and resistance R 5, connect, the S of MOS chip P2 links to each other with an end of resistance R 4 and receives 4.2V, the D of MOS chip P4 links to each other with the anode of electrochemical capacitor E3 and exports BATT, the negativing ending grounding of electrochemical capacitor E3, the other end of resistance R 4 and resistance R 5 other ends are connected to PCCTL.
9. according to claim 2 or 4 described a kind of Novel super capacitance management systems, it is characterized in that: described constant voltage circuit is by resistance R 8, resistance R 9, capacitor C 2, electrochemical capacitor E6, voltage stabilizing chip P5, inductance L, resistance R 10, capacitor C 3, resistance R 11, resistance R 12, E7 forms, voltage stabilizing chip P5 adopts the SP6650 configuration peripheral components of SIPEX that constant 3.3V is provided, the PVIN of voltage stabilizing chip P5, the ILM anode with electrochemical capacitor E6 that links to each other with SHDN, one end of resistance R 9, one end of resistance R 8 is connected to 4.2V, the other end of resistance R 9 links to each other with an end of capacitor C 2, the other end ground connection of capacitor C 2, the LX of voltage stabilizing chip P5 and an end of inductance L, one end of resistance R 10 links to each other, one end of the other end of inductance L and capacitor C 3, the anode of E7, the VOUT of voltage stabilizing chip P5 links to each other and output 3.3V, the other end of the other end of resistance R 10 and capacitor C 3, one end of resistance R 11 links to each other, the FB of the other end of resistance R 11 and voltage stabilizing chip P5, one end of resistance R 12, the negative terminal of E7, the PGND of voltage stabilizing chip P5, the GND of voltage stabilizing chip P5 links to each other and receives ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220511328 CN202918064U (en) | 2012-10-08 | 2012-10-08 | Novel super capacitor managing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220511328 CN202918064U (en) | 2012-10-08 | 2012-10-08 | Novel super capacitor managing system |
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| CN202918064U true CN202918064U (en) | 2013-05-01 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102842966A (en) * | 2012-10-08 | 2012-12-26 | 南京觅丹电子信息有限公司 | Novel super capacitor management system |
| CN103441556A (en) * | 2013-09-17 | 2013-12-11 | 电子科技大学 | Charge-discharge balancer of super capacitor bank and balancing method |
-
2012
- 2012-10-08 CN CN 201220511328 patent/CN202918064U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102842966A (en) * | 2012-10-08 | 2012-12-26 | 南京觅丹电子信息有限公司 | Novel super capacitor management system |
| CN102842966B (en) * | 2012-10-08 | 2014-10-15 | 南京觅丹电子信息有限公司 | Novel super capacitor management system |
| CN103441556A (en) * | 2013-09-17 | 2013-12-11 | 电子科技大学 | Charge-discharge balancer of super capacitor bank and balancing method |
| CN103441556B (en) * | 2013-09-17 | 2015-10-28 | 电子科技大学 | A kind of charge-discharge balancer of super capacitor bank and equalization methods |
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