CN108649626A - A kind of lithium battery charging current Voltage Feedback system - Google Patents
A kind of lithium battery charging current Voltage Feedback system Download PDFInfo
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- CN108649626A CN108649626A CN201810394568.4A CN201810394568A CN108649626A CN 108649626 A CN108649626 A CN 108649626A CN 201810394568 A CN201810394568 A CN 201810394568A CN 108649626 A CN108649626 A CN 108649626A
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- 238000007600 charging Methods 0.000 title claims abstract description 44
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 29
- 238000005070 sampling Methods 0.000 claims abstract description 23
- 238000006243 chemical reaction Methods 0.000 claims abstract description 14
- 238000004088 simulation Methods 0.000 claims abstract description 4
- 230000005611 electricity Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000009776 industrial production Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000002427 irreversible effect Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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- H02J7/0077—
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- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a kind of lithium battery charging current Voltage Feedback systems, including recommend power supply module, BUCK charging circuits, processor, current-voltage sampling module, AD conversion module and flyback sourse；Power supply module is recommended, for providing constant voltage source to BUCK charging circuits；BUCK charging circuits, for charging the battery；Voltage and current sampling module, charging voltage and charging current for acquiring load in real time, AD conversion module is input to by collected voltage signal, current signal；AD conversion module, for the voltage and current signal of simulation to be transformed into digital output to processor；Processor, the switch of the middle MOS pipes of the PWM drive waveform BUCK charging circuits for exporting different duty；Flyback sourse, for being processor and current-voltage sampling module for power supply.This system can effectively ensure the safe and stable operation of lithium battery, and reliability is high, function is more and flexible and convenient.
Description
Technical field
The present invention relates to technical field of lithium batteries, especially a kind of lithium battery charging current Voltage Feedback system.
Background technology
Environmental pollution and energy crisis become the two large problems developed instantly, therefore motorcar electric technology is with its green ring
The unique advantages such as guarantor, energy-saving and emission-reduction have obtained extensive research.Key point of the battery as motorcar electric technology, property
There can be significant impact to the safe to use and development prospect of electric vehicle.The common battery of automobile is lithium battery, to lithium electricity
The heat management in pond is an emphasis of safety monitoring.
The advantages that lithium battery is high with its energy density, service life is long, environmentally protective, in communications and transportation and industrial production etc.
Field is all widely used.However, lithium battery is during charge and discharge cycles use, by temperature, self-discharge rate, depth of discharge,
The influence of the factors such as discharge-rate, capacity and service life constantly decay.When battery capacity falls to the 70% of initial capacity, electricity
The performance in pond will be unable to meet power supply technique requirement, it is necessary to be maintained or replaced, otherwise can be brought to industrial production serious
Harm.Therefore, it is necessary to which the remaining life to lithium battery is analyzed and researched, hold to maximally utilise the remaining of battery
Amount ensures enterprise safety operation.
Lithium battery has many advantages, such as environmentally protective, recycles that a year limit for length, storage yield is high, volume weight is small, conduct
One of important emerging energy is widely used in the industrial production.Battery pack can go out in On The Cycle Working Process
Now as monomer temperature is excessively high, electric current is excessive, overdischarge and situations such as overcharge, and then leads to the lost of life of battery, or even draws
Send out the safety accidents such as battery explosion.It is therefore desirable to the operating statuses to lithium battery monitor and manage in real time, to improve confession
The reliability and the degree of automation of electric system, guarantee safe production.
Irreversible consumption will not occur for ideal lithium battery, cycle charge discharge electric process, and battery life will not decay.But it is real
On border, extremely complex physical-chemical reaction can occur in charge and discharge process for inside battery.Certain reactions can cause active matter
The irreversible consumption of matter, necessarily causes the efficiency for charge-discharge of battery to substantially reduce, the capacity and service life rapid decay of battery.At present
Unspecial accumulator is used in photovoltaic system, therefore some defects of lead-acid accumulator itself, as overcharging resisting and resistance to mistake are put
Energy force difference is all the more apparent in photovoltaic generating system.Since photovoltaic generating system randomness is strong, stability is poor, therefore is difficult to protect
It demonstrate,proves accumulator and carries out regularly charge and discharge.
Invention content
A kind of lithium battery charging current is provided the technical problem to be solved by the present invention is to overcome the deficiencies in the prior art
Voltage Feedback system, this system can effectively ensure the safe and stable operation of lithium battery, and reliability is high, function is more and spirit
It is living convenient.
The present invention uses following technical scheme to solve above-mentioned technical problem：
According to a kind of lithium battery charging current Voltage Feedback system proposed by the present invention, including recommend power supply module, BUCK chargings
Circuit, processor, current-voltage sampling module, AD conversion module and flyback sourse；Wherein,
Power supply module is recommended, for providing constant voltage source to BUCK charging circuits；
BUCK charging circuits, for charging the battery；
Voltage and current sampling module, in real time acquire load charging voltage and charging current, by collected voltage signal,
Current signal is input to AD conversion module；
AD conversion module, for the voltage and current signal of simulation to be transformed into digital output to processor；
Processor, the switch of the middle MOS pipes of the PWM drive waveform BUCK charging circuits for exporting different duty；
Flyback sourse, for being processor and current-voltage sampling module for power supply.
Scheme, Current Voltage are advanced optimized as a kind of lithium battery charging current Voltage Feedback system of the present invention
Sampling module includes current sampling circuit and voltage sampling circuit, and voltage sampling circuit includes TLP 521-2 photoelectrical couplers,
One operational amplifier, second operational amplifier, first to fourth capacitance and first are to 3rd resistor, TLP 521-2 photoelectric couplings
One end of the first pin of device and one end of first resistor, the 4th capacitance is separately connected, the other end ground connection of the 4th capacitance, and first
The other end of resistance is separately connected with one end of the second capacitance, the output end of the first operational amplifier, the first operational amplifier
Power end is connect with one end of the first capacitance, the other end of the first capacitance ground connection, the negative input end of the first operational amplifier and the
The other ends of two capacitances, the 7th pin of TLP 521-2 photoelectrical couplers, second resistance one end be separately connected, second resistance it is another
One end is connected to ground, and the 2nd pin of TLP 521-2 photoelectrical couplers is connect with the 3rd pin of TLP 521-2 photoelectrical couplers,
4th pin of TLP 521-2 photoelectrical couplers is connected to ground, the 6th pin of TLP 521-2 photoelectrical couplers and+5V power supplys, the
One end of three capacitances is separately connected, and the other end of third capacitance is connected to ground, the 5th pin of TLP 521-2 photoelectrical couplers with
One end of 3rd resistor, the positive input terminal of second operational amplifier are separately connected, the other end ground connection of 3rd resistor, the second operation
The negative input end of amplifier and the output end of second operational amplifier connect.
Scheme, the first operation are advanced optimized as a kind of lithium battery charging current Voltage Feedback system of the present invention
The model LM358 of amplifier, second operational amplifier.
Scheme is advanced optimized as a kind of lithium battery charging current Voltage Feedback system of the present invention, processor is
Microcontroller.
Scheme is advanced optimized as a kind of lithium battery charging current Voltage Feedback system of the present invention, microcontroller
Model 89C51.
The present invention has the following technical effects using above technical scheme is compared with the prior art：
（1）This system can realize the high-acruracy survey of electric current, voltage signal, ensure that the precision that capacity accumulation calculates；With height
Precision, automation and it is flexible and convenient the advantages that；
（2）This system can effectively ensure the safe and stable operation of lithium battery, and reliability is high, function is more and flexible and convenient.
Description of the drawings
Fig. 1 is the schematic diagram of the present invention.
Specific implementation mode
Technical scheme of the present invention is described in further detail below in conjunction with the accompanying drawings：
As shown in Figure 1, a kind of lithium battery charging current Voltage Feedback system, including recommend power supply module, BUCK charging circuits, place
Manage device, current-voltage sampling module, AD conversion module and flyback sourse；Wherein,
Power supply module is recommended, for providing constant voltage source to BUCK charging circuits；
BUCK charging circuits, for charging the battery；
Voltage and current sampling module, in real time acquire load charging voltage and charging current, by collected voltage signal,
Current signal is input to AD conversion module；
AD conversion module, for the voltage and current signal of simulation to be transformed into digital output to processor；
Processor, the switch of the middle MOS pipes of the PWM drive waveform BUCK charging circuits for exporting different duty；
Flyback sourse, for being processor and current-voltage sampling module for power supply.
Current-voltage sampling module includes current sampling circuit and voltage sampling circuit, and voltage sampling circuit includes TLP
521-2 photoelectrical couplers, the first operational amplifier, second operational amplifier, first to fourth capacitance and first to 3rd resistor,
One end of the first pin of TLP 521-2 photoelectrical couplers and one end of first resistor, the 4th capacitance is separately connected, the 4th capacitance
Other end ground connection, the other end of first resistor is separately connected with one end of the second capacitance, the output end of the first operational amplifier,
The power end of first operational amplifier is connect with one end of the first capacitance, the other end ground connection of the first capacitance, the first operation amplifier
One end difference of the other end of the negative input end of device and the second capacitance, the 7th pin of TLP 521-2 photoelectrical couplers, second resistance
Connection, the other end of second resistance are connected to ground, the 2nd pin and the TLP 521-2 photoelectric couplings of TLP 521-2 photoelectrical couplers
3rd pin of device connects, and the 4th pin of TLP 521-2 photoelectrical couplers is connected to ground, and the 6th of TLP 521-2 photoelectrical couplers the
One end of pin and+5V power supplys, third capacitance is separately connected, and the other end of third capacitance is connected to ground, TLP 521-2 photoelectricity couplings
5th pin of clutch and the positive input terminal of one end of 3rd resistor, second operational amplifier are separately connected, 3rd resistor it is another
End ground connection, the negative input end of second operational amplifier and the output end of second operational amplifier connect.
The model LM358 of first operational amplifier, second operational amplifier.Processor is microcontroller.The type of microcontroller
Number be 89C51.
This system can realize the high-acruracy survey of electric current, voltage signal, ensure that the precision that capacity accumulation calculates；With height
Precision, automation and it is flexible and convenient the advantages that；This system can effectively ensure the safe and stable operation of lithium battery, reliably
Property it is high, function is more and flexible and convenient.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
The specific implementation of the present invention is confined to these explanations.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, several simple deductions or replacement can also be made, all shall be regarded as belonging to the present invention's
Protection domain.
Claims (5)
1. a kind of lithium battery charging current Voltage Feedback system, which is characterized in that including recommending power supply module, BUCK charging electricity
Road, processor, current-voltage sampling module, AD conversion module and flyback sourse；Wherein,
Power supply module is recommended, for providing constant voltage source to BUCK charging circuits；
BUCK charging circuits, for charging the battery；
Voltage and current sampling module, in real time acquire load charging voltage and charging current, by collected voltage signal,
Current signal is input to AD conversion module；
AD conversion module, for the voltage and current signal of simulation to be transformed into digital output to processor；
Processor, the switch of the middle MOS pipes of the PWM drive waveform BUCK charging circuits for exporting different duty；
Flyback sourse, for being processor and current-voltage sampling module for power supply.
2. a kind of lithium battery charging current Voltage Feedback system according to claim 1, which is characterized in that Current Voltage is adopted
Egf block includes current sampling circuit and voltage sampling circuit, and voltage sampling circuit includes TLP 521-2 photoelectrical couplers, first
Operational amplifier, second operational amplifier, first to fourth capacitance and first are to 3rd resistor, TLP 521-2 photoelectrical couplers
The first pin and one end of one end of first resistor, the 4th capacitance be separately connected, the other end ground connection of the 4th capacitance, the first electricity
The other end of resistance is separately connected with one end of the second capacitance, the output end of the first operational amplifier, the electricity of the first operational amplifier
Source is connect with one end of the first capacitance, the other end ground connection of the first capacitance, the negative input end of the first operational amplifier and second
The other end of capacitance, the 7th pin of TLP 521-2 photoelectrical couplers, second resistance one end be separately connected, second resistance it is another
End is connected to ground, and the 2nd pin of TLP 521-2 photoelectrical couplers is connect with the 3rd pin of TLP 521-2 photoelectrical couplers, TLP
4th pin of 521-2 photoelectrical couplers is connected to ground, the 6th pin and+5V power supplys, the third electricity of TLP 521-2 photoelectrical couplers
One end of appearance is separately connected, and the other end of third capacitance is connected to ground, the 5th pin and third of TLP 521-2 photoelectrical couplers
One end of resistance, the positive input terminal of second operational amplifier are separately connected, the other end ground connection of 3rd resistor, the second operation amplifier
The negative input end of device and the output end of second operational amplifier connect.
3. a kind of lithium battery charging current Voltage Feedback system according to claim 2, which is characterized in that the first operation is put
The model LM358 of big device, second operational amplifier.
4. a kind of lithium battery charging current Voltage Feedback system according to claim 1, which is characterized in that processor is single
Piece machine.
5. a kind of lithium battery charging current Voltage Feedback system according to claim 4, which is characterized in that the type of microcontroller
Number be 89C51.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810394568.4A CN108649626A (en) | 2018-04-27 | 2018-04-27 | A kind of lithium battery charging current Voltage Feedback system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810394568.4A CN108649626A (en) | 2018-04-27 | 2018-04-27 | A kind of lithium battery charging current Voltage Feedback system |
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| CN108649626A true CN108649626A (en) | 2018-10-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110421244A (en) * | 2019-08-27 | 2019-11-08 | 无锡海菲焊接设备有限公司 | The welding control system of percussion welder |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7777455B1 (en) * | 2007-06-19 | 2010-08-17 | Linear Technology Corporation | Switching battery charger with programmable current control and power control |
| CN104184198A (en) * | 2014-09-16 | 2014-12-03 | 哈尔滨恒誉名翔科技有限公司 | Super capacitor charger based on STM 32F407IG |
| CN105048613A (en) * | 2015-09-02 | 2015-11-11 | 泉州市海通电子设备有限公司 | Electric vehicle intelligent charger |
| CN205524067U (en) * | 2016-03-15 | 2016-08-31 | 中能东道集团有限公司 | Electric motor car group battery voltage acquisition circuit |
| CN206908373U (en) * | 2017-07-20 | 2018-01-19 | 重庆永翕光电科技有限公司 | A kind of double BUCK charge controllers of lithium battery |
| CN107846054A (en) * | 2017-10-27 | 2018-03-27 | 华北电力大学 | A kind of lithium battery intelligent charger based on PIC16F883 |
-
2018
- 2018-04-27 CN CN201810394568.4A patent/CN108649626A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7777455B1 (en) * | 2007-06-19 | 2010-08-17 | Linear Technology Corporation | Switching battery charger with programmable current control and power control |
| CN104184198A (en) * | 2014-09-16 | 2014-12-03 | 哈尔滨恒誉名翔科技有限公司 | Super capacitor charger based on STM 32F407IG |
| CN105048613A (en) * | 2015-09-02 | 2015-11-11 | 泉州市海通电子设备有限公司 | Electric vehicle intelligent charger |
| CN205524067U (en) * | 2016-03-15 | 2016-08-31 | 中能东道集团有限公司 | Electric motor car group battery voltage acquisition circuit |
| CN206908373U (en) * | 2017-07-20 | 2018-01-19 | 重庆永翕光电科技有限公司 | A kind of double BUCK charge controllers of lithium battery |
| CN107846054A (en) * | 2017-10-27 | 2018-03-27 | 华北电力大学 | A kind of lithium battery intelligent charger based on PIC16F883 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110421244A (en) * | 2019-08-27 | 2019-11-08 | 无锡海菲焊接设备有限公司 | The welding control system of percussion welder |
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Application publication date: 20181012 |