CN106712159A - Lithium battery fast charging and discharging device and lithium battery fast charging and discharging method - Google Patents
Lithium battery fast charging and discharging device and lithium battery fast charging and discharging method Download PDFInfo
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- CN106712159A CN106712159A CN201611051898.0A CN201611051898A CN106712159A CN 106712159 A CN106712159 A CN 106712159A CN 201611051898 A CN201611051898 A CN 201611051898A CN 106712159 A CN106712159 A CN 106712159A
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 202
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 202
- 238000007600 charging Methods 0.000 title claims abstract description 138
- 238000007599 discharging Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000005070 sampling Methods 0.000 claims abstract description 11
- 230000005611 electricity Effects 0.000 claims description 14
- 238000001514 detection method Methods 0.000 claims description 6
- 230000002265 prevention Effects 0.000 claims description 6
- 230000003247 decreasing effect Effects 0.000 claims description 5
- 235000019504 cigarettes Nutrition 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 5
- 238000005259 measurement Methods 0.000 description 3
- 238000005121 nitriding Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010277 constant-current charging Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
-
- H02J7/0072—
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00302—Overcharge protection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00304—Overcurrent protection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00306—Overdischarge protection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
- H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention relates to a lithium battery fast charging and discharging device and a lithium battery fast charging and discharging method. The lithium battery fast charging and discharging device comprises a rechargeable lithium battery pack, an MCU main control system, a DC-DC boosting module, a battery protection module, a lithium battery charging module, and a sampling resistor. The MCU main control system is connected with the DC-DC boosting module and the lithium battery charging module. The sampling resistor is connected with the battery protection module and the rechargeable lithium battery. The DC-DC boosting module is connected with the lithium battery charging module. The lithium battery charging module is connected with the input end of the lithium battery. The output end of the lithium battery is connected with a discharging management module. The MCU main control system is used to control the battery protection module, the DC-DC boosting module, the lithium battery charging module, and the discharging management module. The lithium battery charging module is used for charging the rechargeable lithium battery pack. The high-rate lithium battery is cooperated with a fast charging technology, and the lithium battery can be fully charged in about ten minutes, and therefore use of users is greatly facilitated, and the lithium battery fast charging and discharging device and the lithium battery fast charging and discharging method are really used for emergency situations.
Description
Technical field
The invention belongs to electronic technology field, a kind of lithium battery fast charging and discharging device and method is specifically related to.
Background technology
With the development of current electronic technology, the digital product update speed such as MP3, MP4, mobile phone, palm PC pole
It is quick, emerges in an endless stream.The function of each electronic product enrich constantly and screen continuous increase so that power consumption at double
Increase, however the increase that the electricity of battery but cannot be at double, cause the use time of mobile phone to shorten, bring work and life to user
Inconvenient and trouble in work.For such situation, the charger baby for being specifically used to be charged to electronic products such as mobile phones is arisen at the historic moment.
Existing charger baby is all come accumulation of energy, and in order to limit caloric value of the battery in charging process, to protect using battery
Card security and service life, charging current will be strictly controlled when being charged to battery.According to the difference of battery capacity,
Its charging interval was from 8-10 hours.There is charging interval too long of defect, user will carry full of once electricity and go out to wait
Treat for a long time, to cause waste of time, many inconveniences are brought to user.The charger baby product generally existing of current market
The slow problem of charging rate, capacity is bigger, and this problem is more prominent.When user is actually used, often interim just discovery needs
Charge, could be full of within several hours again etc., it is impossible to play interim emergent effect.And existing quick charge treasured on the market
Charging rate improves limited, it is impossible to reach the demand of people, does not also provide the solution of compatible tradition charging modes.So
It is badly in need of a kind of compatible common charging modes and can be to the device of lithium battery fast charging and discharging.
The content of the invention
For the defect of prior art, the present invention is intended to provide a kind of lithium battery fast charging and discharging device and method, can be with
Realization is automatically selected for different external connection power supply carries out quick mode to chargeable lithium cell group or general mode charges, and can
Quick charge is carried out to it with Intelligent Recognition external charging equipment.
To solve the above problems, the technical scheme that the present invention is provided is as follows：
In a first aspect, the invention provides a kind of lithium battery fast charging and discharging device, including chargeable lithium cell group, MCU
Master control system, DC-DC boost modules, battery protection module, lithium cell charging module, electric discharge management module and sampling resistor；
The MCU master control systems are connected with DC-DC boost modules and lithium cell charging module respectively；The sampling resistor
It is respectively connecting to battery protection module and chargeable lithium cell group；The DC-DC boost modules are connected to the lithium cell charging
Module；The lithium cell charging module is connected with the input of chargeable lithium cell group；The output of the chargeable lithium cell group
End is connected to the electric discharge management module；
The MCU master control systems are used to control the battery protection module, DC-DC boost modules, lithium cell charging module
And electric discharge management module work；
The lithium cell charging module is used to charge chargeable lithium cell group.
Alternatively, described device also includes charging selecting module and electric discharge management module；
The input of the charging selecting module include for connect external power adapter 15V inputs, be used for
Connect the 5V inputs and the 12V inputs for connecting automobile cigarette lighter of USB power source；
It is defeated that the output end of the electric discharge management module includes 1A current output terminals, 2A current output terminals and 2.4A electric currents
Go out end；
The charging selecting module is used to recognize the type of external power source, by judged result select normal charging mode or
Fast charge mode；
The electric discharge management module is used to recognize the type of external electric equipment, by judged result select 1A or 2A or
2.4A discharges external electric equipment.
Alternatively, the MCU master control systems, battery protection module, sampling resistor and chargeable lithium cell group are constituted back
Road is put for being overshooted to chargeable lithium cell group, excessively, the protection of excessively stream；
Monolithic lithium battery is pressed in the range of 3.0V to 4.2V in MCU master control systems detect chargeable lithium cell group
When, MCU master control systems control battery protection module is stopped, and is charged normal chargeable lithium cell group；
When MCU master control systems detect in chargeable lithium cell group monolithic lithium battery voltage voltage is more than 4.35V, MCU
Master control system control battery protection module carries out overshoot protection；
When MCU master control systems detect in chargeable lithium cell group monolithic lithium battery voltage voltage is less than 2.30V, MCU
Master control system control battery protection module carries out Cross prevention；
When the charging current that MCU master control systems detect chargeable lithium cell group is more than 6A, MCU master control systems control electricity
Pond protection module carries out overcurrent protection.
Alternatively, the MCU master control systems include charging current adjustment module, for the dutycycle by adjusting PMW
Mode adjusts the charging current of pulse output.
Alternatively, the MCU master control systems also including battery electric quantity detection module and are connected with LED light, based on
The capacity of the charging and discharging of chargeable lithium cell group is calculated, the current of chargeable lithium cell group is pointed out by the LED light
Dump energy.
Alternatively, the DC-DC boost modules are used for voltage as the external power supply of 5V is promoted to 12V.
Alternatively, the lithium cell charging module includes pre-charge control unit, constant-current charge control unit and constant pressure
Charging control unit；
The pre-charge control unit is used for the monolithic lithium battery in MCU master control systems detect chargeable lithium cell group
Line precharge is entered to it when pressure is less than 3.0V, its charging current is the 1/6 of constant-current charge electric current；
The constant-current charge control unit is used for the monolithic lithium battery in MCU master control systems detect chargeable lithium cell group
Voltage carries out constant-current charge when being more than 3.0V to it, and its charging current is that 4A to 6A is adjustable；
The constant-voltage charge control unit is used for the monolithic lithium in MCU master control systems detect chargeable lithium cell group voltage
Cell voltage carries out constant-voltage charge when being equal to charge cutoff voltage to it, when its charging current reduces from constant-current charge electric current
To constant-current charge electric current 1/10 when stop charge.
Alternatively, the monolithic lithium battery capacity scope that the chargeable lithium cell group is between 2000mAH to 2200AH,
Include that the connected mode between 2 pieces or 3 pieces of batteries, the monolithic lithium battery is series connection altogether.
A kind of lithium battery quick charge device that the present invention is provided, high-rate lithium battery is coordinated using rapid nitriding,
The compatible various types of external power sources of the present apparatus, such as the charger or onboard charger of special 15V/6A are short by more than ten
Just user can be greatly facilitated with fully charged in minute, really serve emergent effect.The present apparatus is also compatible common
USB charging modes, by automatic detection external power supply type select charge mode automatic charging is carried out to lithium battery group.Simultaneously
The present apparatus also supports the external equipment that Intelligent Measurement mobile phone etc. is electrically charged, and adjust automatically charging current supports high current to mobile phone
Quick charge.It is the real achievable two-way device for filling soon.
Second aspect is as follows the step of the charging method the invention provides a kind of lithium battery method for quickly charging and discharging：
Step S1：When charging selecting module detects external power source to be accessed, the type of external power source described in automatic decision,
And according to the different choice normal charging mode or fast charge mode of type；
Step S2：If the selection in step S1 is normal charging mode, boosted to using DC-DC boost modules
After 12V, lithium cell charging module is controlled to fill the constant current that chargeable lithium cell group carries out size of current 1A by MCU master control systems
Electricity；
Step S3：If the selection in step S1 is fast charge mode, chargeable lithium electricity is detected by MCU master control systems
The voltage swing of monolithic lithium battery in the group of pond；
Step S4：Line precharge is entered to it when the monolithic lithium battery voltage detected in step S3 is less than 3.0V, it fills
Electric size of current is the 1/6 of constant-current charge electric current；When the monolithic lithium battery voltage detected in step S3 is more than 3.0V to it
Constant-current charge is carried out, its charging current is that 4A to 6A is adjustable；When the monolithic lithium battery voltage detected in step S3 is equal to
Constant-voltage charge is carried out to it during charge cutoff voltage, when its charging current is decreased to constant-current charge electricity from constant-current charge electric current
Stream 1/10 when stop charge.
Alternatively, in the step S3 in MCU master control systems detect chargeable lithium cell group monolithic lithium battery voltage
Overshoot protection is carried out to it during more than 4.35V, the monolithic lithium battery voltage in MCU master control systems detect chargeable lithium cell group
Cross prevention is carried out to it during less than 2.30V.
A kind of lithium battery fast charge method that the present invention is provided, high-rate lithium battery is coordinated using technology is filled soon, is coordinated
Special charger or automobile-used converter just can greatly facilitate user, really within short more than ten minutes with fully charged
Serve emergent effect.This product also supports that Intelligent Measurement mobile phone etc. is electrically charged equipment, adjust automatically charging current, branch simultaneously
High current is held to mobile phone quick charge.It is real two-way to fill product soon.And utilize battery voltage to dump energy into certain
Corresponding relation calculates the dump energy of battery pack and using four LEDs as instruction.
Brief description of the drawings
In order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art, below will be to specific
The accompanying drawing to be used needed for implementation method or description of the prior art is briefly described.In all of the figs, similar element
Or the general reference by being similar in part is identified.In accompanying drawing, each element or part might not draw according to actual ratio.
Fig. 1 shows a kind of structure chart of lithium battery fast charging and discharging device that the embodiment of the present invention one is provided；
Fig. 2 shows a kind of DC-DC boost modules of lithium battery fast charging and discharging device that the embodiment of the present invention one is provided
Structural representation；
Fig. 3 shows a kind of flow chart of lithium battery method for quickly charging and discharging that the embodiment of the present invention one is provided.
Specific embodiment
A kind of lithium battery fast charging and discharging device of the invention is described further with reference to specific embodiment：
Referring to shown in accompanying drawing 1, the embodiment of the invention provides a kind of lithium battery fast charging and discharging device, including chargeable lithium
Battery pack 7, MCU master control systems 1, DC-DC boost modules 3, battery protection module 5, lithium cell charging module 2 and sampling resistor
8；
The MCU master control systems 1 are connected with DC-DC boost modules 3 and lithium cell charging module 2 respectively；The sampling
Resistance 8 is respectively connecting to battery protection module 5 and chargeable lithium cell group 7；The DC-DC boost modules 3 are connected to the lithium
Battery charging module 2；The lithium cell charging module 2 is connected with the input of chargeable lithium cell group 7；The chargeable lithium electricity
The output end of pond group 7 is connected to the electric discharge management module 6；
The MCU master control systems 1 are used to control the battery protection module 5, DC-DC boost modules 3, lithium cell charging mould
Block 2 and electric discharge management module 6 work；
The lithium cell charging module 2 is used to charge chargeable lithium cell group 7.
In the present embodiment, described device also includes charging selecting module 4 and electric discharge management module 6；
The input of the charging selecting module 4 include for connect external power adapter 15V inputs, be used for
Connect the 5V inputs and the 12V inputs for connecting automobile cigarette lighter of USB power source；
The output end of the electric discharge management module 6 includes 1A current output terminals, 2A current output terminals and 2.4A electric currents
Output end；
The charging selecting module 4 is used to recognize the type of external power source, and normal charging mode is selected by judged result
Or fast charge mode；
The electric discharge management module 6 is used to recognize the type of external electric equipment, by judged result select 1A or 2A or
2.4A discharges external electric equipment.
In the present embodiment, the MCU master control systems 1, battery protection module 5, sampling resistor 8 and chargeable lithium cell group
7 composition loops to chargeable lithium cell group 7 for being overshooted, mistake is put and the protection of excessively stream；
Monolithic lithium battery is pressed in the range of 3.0V to 4.2V in MCU master control systems 1 detect chargeable lithium cell group 7
When, the control battery protection module 5 of MCU master control systems 1 is stopped, and is charged normal chargeable lithium cell group 7；
When monolithic lithium battery voltage voltage is more than 4.35V during MCU master control systems inspection 1 measures chargeable lithium cell group 7,
The control battery protection module 5 of MCU master control systems 1 carries out overcharging protection；
When MCU master control systems 1 detect in chargeable lithium cell group 7 monolithic lithium battery voltage voltage is less than 2.30V,
The control battery protection module 5 of MCU master control systems 1 carries out Cross prevention；
When the charging current that MCU master control systems 1 detect chargeable lithium cell group 7 is more than 6A, MCU master control systems 1 are controlled
Battery protection module processed 5 carries out overcurrent protection.
Battery protection module 5 uses S-8261ABPMD chips in the present embodiment, realizes the mistake to chargeable lithium cell group 7
Punching, mistake are put, the defencive function of excessively stream.Its overcharged voltage is set to 4.35V, overdischarge pressure and is set to 2.30V.
In the present embodiment, the MCU master control systems 1 include charging current adjustment module, for the duty by adjusting PMW
The mode of ratio adjusts the charging current of pulse output.
In the present embodiment, the MCU master control systems 1 also include battery electric quantity detection module and are connected with LED light, use
In the capacity of the charging and discharging for calculating chargeable lithium cell group, chargeable lithium cell group is pointed out by the LED light
Current residual electricity.
Shown in Figure 2, in the present embodiment, the DC-DC boost modules 3 are used for voltage as the external power supply of 5V is lifted
To 12V.If during the 5V voltages that external power supply type is provided for USB, need to be boosted to 12V could give the present embodiment in can
Charged lithium cells group 7 is charged, and the charging current that it can be provided is 1A.DC-DC described in the present embodiment rises pressing mold
Block 3 is controlled by the PWM of MCU main control chips, and Fig. 2 is the structural representation of DC-DC boost modules 3, the circuit by input inductance L,
Output capacitance C, power switch tube S, power diode D, load RLAnd MCU master control systems 1 are constituted.By control in the present embodiment
The dutycycle of power switch tube S conducting processed, by input voltage VinBoost to Vout.The DC-DC boost modules 3 are responsible for when input
When power supply type is USB power source, it is inputted voltage and 12V is boosted to by 5V.Its maximum output current is 1A.This circuit structure has
There are small volume, light weight, high conversion efficiency.
In the present embodiment, the lithium cell charging module 2 include pre-charge control unit, constant-current charge control unit and
Constant-voltage charge control unit；
The pre-charge control unit is used for the monolithic lithium battery in MCU master control systems 1 detect chargeable lithium cell group 7
Voltage enters line precharge when being less than 3.0V to it, and its charging current is the 1/6 of constant-current charge electric current；
The constant-current charge control unit is used for the monolithic lithium electricity in MCU master control systems 1 detect chargeable lithium cell group 7
Cell voltage carries out constant-current charge when being more than 3.0V to it, and its charging current is that 4A to 6A is adjustable；
The constant-voltage charge control unit is used for the monolithic in MCU master control systems 1 detect the voltage of chargeable lithium cell group 7
Lithium battery voltage carries out constant-voltage charge when being equal to charge cutoff voltage to it, when its charging current subtracts from constant-current charge electric current
As low as constant-current charge electric current 1/10 when stop charge.
In the present embodiment, in order to further improve the charging rate of chargeable lithium cell group, in the MCU master control systems
Voltage comparison module is set, and the Full Charge Capacity voltage for setting monolithic chargeable lithium cell is the first threshold voltage, detection monolithic can fill
The current voltage value of electric lithium battery, compares with the first threshold voltage, when the voltage for detecting monolithic chargeable lithium cell is less than
During the first threshold voltage, electric current charging is fixed to chargeable lithium cell group, size of current is the 1/5 of constant-current charge electric current.
When the voltage for detecting monolithic chargeable lithium cell is less than charge cutoff voltage more than the first threshold voltage, by MCU master controls
The variable current that system control 1 controls lithium cell charging module 2 and PMW modes are carried out to chargeable lithium cell group charges, and electric current is big
Small progressively to reduce with voltage rising, minimum depreciation size of current is the 1/10 of constant-current charge electric current.It is electric when monolithic lithium is detected
When cell voltage has reached charge cutoff voltage, stop charging.
In the present embodiment, the monolithic lithium battery capacity scope that the chargeable lithium cell group 7 is is in 2000mAH to 2200AH
Between, altogether including 2 pieces or 3 pieces of batteries, the connected mode between the monolithic lithium battery is series connection.
A kind of lithium battery quick charge device provided in an embodiment of the present invention, high rate lithium is coordinated using rapid nitriding
Battery, the compatible various types of external power sources of the present apparatus, such as the charger or onboard charger of special 15V/6A are short
Just user can be greatly facilitated with fully charged in short more than ten minutes, really serve emergent effect.The present apparatus also can be simultaneous
Hold common USB charging modes, select charge mode to fill lithium battery group automatically by automatic detection external power supply type
Electricity.The present apparatus also supports the external equipment that Intelligent Measurement mobile phone etc. is electrically charged simultaneously, and adjust automatically charging current supports high current
To mobile phone quick charge.It is the real achievable two-way device for filling soon.
Referring to shown in accompanying drawing 3, the embodiment of the invention provides a kind of lithium battery method for quickly charging and discharging, including：
Step S1：When charging selecting module 4 detects external power source to be accessed, the class of external power source described in automatic decision
Type, and according to the different choice normal charging mode or fast charge mode of type；
Step S2：If the selection in step S1 is normal charging mode, boosted to using DC-DC boost modules 3
After 12V, the constant current of size of current 1A is carried out to chargeable lithium cell group by the control lithium cell charging of MCU master control systems 1 module 2
Charge；
Step S3：If the selection in step S1 is fast charge mode, chargeable lithium is detected by MCU master control systems 1
The voltage swing of monolithic lithium battery in battery pack 7；
Step S4：Line precharge is entered to it when the monolithic lithium battery voltage detected in step S3 is less than 3.0V, it fills
Electric size of current is the 1/6 of constant-current charge electric current；When the monolithic lithium battery voltage detected in step S3 is more than 3.0V to it
Constant-current charge is carried out, its charging current is that 4A to 6A is adjustable；When the monolithic lithium battery voltage detected in step S3 is equal to
Constant-voltage charge is carried out to it during charge cutoff voltage, when its charging current is decreased to constant-current charge electricity from constant-current charge electric current
Stream 1/10 when stop charge.
In the present embodiment, monolithic lithium is electric in MCU master control systems 1 detect chargeable lithium cell group 7 in the step S3
Cell voltage carries out overshoot protection when being more than 4.35V to it, the monolithic lithium in MCU master control systems 1 detect chargeable lithium cell group 7
Cell voltage carries out Cross prevention when being less than 2.30V to it.
The fast charge mode of the lithium cell charging module 2 in the present embodiment is controlled by the PWM mode of MCU main control chips 1.
When starting to charge up if detect monolithic lithium battery voltage it is too low if carry out trickle charge, its size of current is quick constant-current charge
1/6.When reaching monolithic lithium battery voltage and reaching threshold, by keeping charging voltage constant, progressively reduce the side of charging current
Formula is charged, and now MCU main control chips 1 are added in the voltage on monolithic lithium battery by controlling to adjust the dutycycle of PWM, holding
Invariable, with the carrying out of charging process, the lithium concentration inside its positive pole is less and less, and diffusion velocity is gradually reduced,
Electric current is gradually reduced, until electric current is decreased to stop charging during the 1/10 of constant-current charge electric current.
A kind of lithium battery fast charge method provided in an embodiment of the present invention, using the PWM control electric currents of MCU master control systems
Rapid nitriding coordinate high-rate lithium battery, the charging current of 6A is reached as high as in constant-current charging phase, in the present embodiment
The chargeable lithium cell group of common 6600mAH, can complete to charge in 20 minutes.Coordinate 15V/6A special chargers or
The automobile-used converters of 12V just can greatly facilitate user within short more than ten minutes with fully charged, really serve emergent
Effect.In addition the embodiment of the present invention utilizes battery voltage to be calculated into certain corresponding relation with dump energy the residue electricity of battery pack
Four LEDs are measured and utilized as instruction.
Although by reference to preferred embodiment, invention has been described, is not departing from the situation of the scope of the present invention
Under, various improvement can be carried out to it and part therein can be replaced with equivalent.Especially, as long as in the absence of structure punching
Prominent, the every technical characteristic being previously mentioned in each embodiment can combine in any way.The invention is not limited in text
Disclosed in specific embodiment, but all technical schemes including falling within the scope of the appended claims.
Claims (10)
1. a kind of lithium battery fast charging and discharging device, it is characterised in that：Including chargeable lithium cell group, MCU master control systems, DC-
DC boost modules, battery protection module, lithium cell charging module, electric discharge management module and sampling resistor；
The MCU master control systems are connected with DC-DC boost modules and lithium cell charging module respectively；The sampling resistor difference
It is connected to battery protection module and chargeable lithium cell group；The DC-DC boost modules are connected to the lithium cell charging module；
The lithium cell charging module is connected with the input of chargeable lithium cell group；The output end connection of the chargeable lithium cell group
To the electric discharge management module；
The MCU master control systems be used for control the battery protection module, DC-DC boost modules, lithium cell charging module and
Electric discharge management module work；
The lithium cell charging module is used to charge chargeable lithium cell group.
2. a kind of lithium battery fast charging and discharging device according to claim 1, it is characterised in that：Described device also includes filling
Electric selecting module and electric discharge management module；
The input of the charging selecting module include for connect external power adapter 15V inputs, for connecting
The 5V inputs of USB power source and the 12V inputs for connecting automobile cigarette lighter；
The output end of the electric discharge management module includes the output of 1A current output terminals, 2A current output terminals and 2.4A electric currents
End；
The charging selecting module is used to recognize the type of external power source, and normal charging mode or quick is selected by judged result
Charge mode；
The electric discharge management module is used to recognize the type of external electric equipment, and 1A or 2A or 2.4A pairs are selected by judged result
External electric equipment is discharged.
3. a kind of lithium battery fast charging and discharging device according to claim 1, it is characterised in that：The MCU master control systems,
Battery protection module, sampling resistor and chargeable lithium cell group constitute loop be used to overshooting chargeable lithium cell group,
Cross put, the protection of excessively stream；
When MCU master control systems are detected monolithic lithium battery is pressed in the range of 3.0V to 4.2V in chargeable lithium cell group when, MCU
Master control system control battery protection module is stopped, and is charged normal chargeable lithium cell group；
When MCU master control systems detect in chargeable lithium cell group monolithic lithium battery voltage voltage is more than 4.35V, MCU master controls
System control battery protection module carries out overshoot protection；
When MCU master control systems detect in chargeable lithium cell group monolithic lithium battery voltage voltage is less than 2.30V, MCU master controls
System control battery protection module carries out Cross prevention；
When the charging current that MCU master control systems detect chargeable lithium cell group is more than 6A, MCU master control systems control battery is protected
Shield module carries out overcurrent protection.
4. a kind of lithium battery fast charging and discharging device according to claim 1, it is characterised in that：The MCU master control systems
Including charging current adjustment module, the charging current for adjusting pulse output by way of the dutycycle for adjusting PMW.
5. a kind of lithium battery fast charging and discharging device according to claim 1, it is characterised in that：The MCU master control systems
Also include battery electric quantity detection module and being connected with LED light, the charging and discharging for calculating chargeable lithium cell group
Capacity, the current residual electricity of chargeable lithium cell group is pointed out by the LED light.
6. a kind of lithium battery fast charging and discharging device according to claim 1, it is characterised in that：The DC-DC rises pressing mold
Block is used for voltage as the external power supply of 5V is promoted to 12V.
7. a kind of lithium battery fast charging and discharging device according to claim 1, it is characterised in that：The lithium cell charging mould
Block includes pre-charge control unit, constant-current charge control unit and constant-voltage charge control unit；
It is small that the pre-charge control unit is used for the monolithic lithium battery voltage in MCU master control systems detect chargeable lithium cell group
Line precharge is entered to it when 3.0V, its charging current is the 1/6 of constant-current charge electric current；
The constant-current charge control unit is used for the monolithic lithium battery voltage in MCU master control systems detect chargeable lithium cell group
Constant-current charge is carried out to it during more than 3.0V, its charging current is that 4A to 6A is adjustable；
The constant-voltage charge control unit is used for the monolithic lithium battery in MCU master control systems detect chargeable lithium cell group voltage
Voltage carries out constant-voltage charge when being equal to charge cutoff voltage to it, when its charging current is decreased to perseverance from constant-current charge electric current
Current charge electric current 1/8 when stop charge.
8. a kind of lithium battery fast charging and discharging device according to claim 1, it is characterised in that：The chargeable lithium cell
Between 2000mAH to 2200AH, altogether including 2 pieces or 3 pieces of batteries, the monolithic lithium is electric for the monolithic lithium battery capacity scope that group is
Connected mode between pond is series connection.
9. a kind of lithium battery method for quickly charging and discharging, it is characterised in that：The step of charging method, is as follows：
Step S1：When charging selecting module detects external power source to be accessed, the type of external power source described in automatic decision, and root
According to the different choice normal charging mode or fast charge mode of type；
Step S2：If the selection in step S1 is normal charging mode, after being boosted to 12V using DC-DC boost modules,
The constant-current charge of size of current 1A is carried out to chargeable lithium cell group by MCU master control systems control lithium cell charging module；
Step S3：If the selection in step S1 is fast charge mode, chargeable lithium cell group is detected by MCU master control systems
The voltage swing of middle monolithic lithium battery；
Step S4：Line precharge is entered to it when the monolithic lithium battery voltage detected in step S3 is less than 3.0V, its electricity that charges
Stream size is the 1/6 of constant-current charge electric current；It is carried out when the monolithic lithium battery voltage detected in step S3 is more than 3.0V
Constant-current charge, its charging current is that 4A to 6A is adjustable；Charged when the monolithic lithium battery voltage detected in step S3 is equal to
Constant-voltage charge is carried out to it during blanking voltage, when its charging current is decreased to constant-current charge electric current from constant-current charge electric current
Stop charging when 1/8.
10. a kind of lithium battery method for quickly charging and discharging according to claim 9, it is characterised in that in the step S3 when
MCU master control systems are detected when monolithic lithium battery voltage is more than 4.35V in chargeable lithium cell group and carry out overshoot protection to it, when
MCU master control systems are detected when monolithic lithium battery voltage is less than 2.30V in chargeable lithium cell group and carry out Cross prevention to it.
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| CN107359663A (en) * | 2017-08-04 | 2017-11-17 | 芯海科技（深圳）股份有限公司 | One kind is based on fast charge agreement MCU control regulators and pressure regulation method |
| CN108923088A (en) * | 2018-08-10 | 2018-11-30 | 必利恩（北京）新能源技术研究有限责任公司 | Battery discharge capability lifting device and method |
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| CN112151888A (en) * | 2020-09-25 | 2020-12-29 | 上海航天计算机技术研究所 | Carrier rocket lithium battery intelligent management equipment |
| CN112398209A (en) * | 2019-08-13 | 2021-02-23 | 北京小米移动软件有限公司 | Wireless charging device, system, control method, terminal device and storage medium |
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| CN112398209B (en) * | 2019-08-13 | 2023-01-03 | 北京小米移动软件有限公司 | Wireless charging device, system, control method, terminal device and storage medium |
| CN110676903A (en) * | 2019-10-08 | 2020-01-10 | 宁波绿光能源集团有限公司 | Control method of separated portable solar system |
| CN110957779B (en) * | 2019-11-28 | 2022-03-18 | 和美（深圳）信息技术股份有限公司 | Lithium battery charging circuit and service robot |
| CN110957779A (en) * | 2019-11-28 | 2020-04-03 | 和美（深圳）信息技术股份有限公司 | Lithium battery charging circuit and service robot |
| CN111371140A (en) * | 2020-03-11 | 2020-07-03 | Oppo广东移动通信有限公司 | Charging control method, charging control device, terminal device and storage medium |
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| CN112151888A (en) * | 2020-09-25 | 2020-12-29 | 上海航天计算机技术研究所 | Carrier rocket lithium battery intelligent management equipment |
| CN112151888B (en) * | 2020-09-25 | 2022-02-15 | 上海航天计算机技术研究所 | Carrier rocket lithium battery intelligent management equipment |
| CN113300431A (en) * | 2021-05-31 | 2021-08-24 | 山东圣阳电源股份有限公司 | Charging method of lithium battery pack and related assembly thereof |
| CN113300431B (en) * | 2021-05-31 | 2023-08-15 | 山东圣阳电源股份有限公司 | Charging method of lithium battery pack and related components thereof |
| CN114578253A (en) * | 2022-05-06 | 2022-06-03 | 大牧人机械(胶州)有限公司 | Method for predicting service life of rechargeable lithium battery of pig farm alarm |
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