CN109347154A - Charging and discharging lithium battery drives protection system - Google Patents
Charging and discharging lithium battery drives protection system Download PDFInfo
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- CN109347154A CN109347154A CN201811091340.4A CN201811091340A CN109347154A CN 109347154 A CN109347154 A CN 109347154A CN 201811091340 A CN201811091340 A CN 201811091340A CN 109347154 A CN109347154 A CN 109347154A
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- 238000007599 discharging Methods 0.000 title claims abstract description 75
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 65
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 65
- 238000001514 detection method Methods 0.000 claims abstract description 69
- 230000005611 electricity Effects 0.000 claims abstract description 36
- 238000012544 monitoring process Methods 0.000 claims abstract description 25
- 230000002093 peripheral effect Effects 0.000 claims abstract description 14
- 239000004065 semiconductor Substances 0.000 claims description 37
- 238000004891 communication Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000003786 synthesis reaction Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 5
- 230000002708 enhancing effect Effects 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000010010 raising Methods 0.000 abstract description 2
- 239000000428 dust Substances 0.000 description 5
- 238000007689 inspection Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000003993 interaction Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- H02J7/0021—
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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
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
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- H02J7/0026—
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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
- 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
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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
- 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
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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
- 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
Abstract
This case discloses a kind of charging and discharging lithium battery driving protection system; including the chip synthesized by power module, program control module and battery charging and discharging management module; the program control module is connected with charging and discharging currents detection module, short-circuit detecting module, battery temperature monitoring modular, charge and discharge Electric drive module and several external interfaces, and voltage detection module and the balance module for balanced each single-unit battery core storage electricity are integrated in the battery charging and discharging management module.Charging and discharging lithium battery provided by present application example drives protection system, is that a kind of peripheral circuit is simple, defencive function is perfect, low in energy consumption, reliability raising, function enhancing, PLC technology, the integrated circuit chip system that confidentiality enhances, cost reduces.
Description
Technical field
The present invention relates to charge protection technical fields, it is more particularly related to which a kind of charging and discharging lithium battery drives
Protection system.
Background technique
With the continuous development of dust catcher household electrical appliances and garden instrument, user is higher and higher to the approval of wireless product, then
Derive portable class product.Wherein, lithium battery class product is small in size with its, energy density is high, has extended cycle life, quick charge and discharge
Electricity, storage life length, memory-less effect, the environmentally protective excellent characteristics such as low with self-discharge rate are the trend of the following battery development
Place.In recent years, more and more portable products are using lithium battery as main power source, such as dust catcher and garden instrument
Deng.
Due to the chemical characteristic of lithium battery, for battery in the case of over-discharge, electrolyte causes battery special because of decomposition
Property deterioration, and overcharge and will cause the shortening of battery life, battery performance is seriously destroyed, or even is exploded.It is positive because
In this way, to guarantee the performance of lithium battery, service life and using security problems, all lithium batteries using when require a protection
Circuit come realize overcharge, over-discharge, a series of defencive function such as overcurrent.
The basic function of li-ion cell protection control circuit includes overvoltage charge protection, and overvoltage discharge prevention discharged
Stream protection, short-circuit protection.In addition, lithium battery may cause after normal charge and discharge for a long time each monocell it
Between voltage it is inconsistent, need using electric quantity balancing technology come in battery monocell carry out equalization operation.
Currently used lithium battery protection circuit, generally by lithium battery protection integrated circuit chip AFE/DFE, main control MCU
And its driving circuit, power circuit, state of charge display circuit, switch key detection circuit, charging and are put MOS and driving circuit
Electric MOS and driving circuit etc. are constituted.Lithium battery protection integrated circuit chip AFE/DFE monitors the voltage of battery, and and main control MCU
Communication;Main control MCU controls the on-off tune of charge and discharge MOS by MOS drive circuit according to current charging and discharging state and cell voltage
Speed.
If Chinese Patent Application No. is 201711158460.7, denomination of invention is li-ion cell protection control asic chip system
System, the integrated level of this chip system is not high, and function is limited, and does not have programmability, therefore the present invention first Shen herein
It please be improved on the basis of patent.
Summary of the invention
Shortcoming present in view of the above technology, the present invention provide a kind of charging and discharging lithium battery driving protection system,
Be it is a kind of specifically for lithium battery power supply system, peripheral circuit is simple, defencive function is perfect, low in energy consumption, reliability improves, function
It can enhancing, PLC technology, the integrated circuit chip system that confidentiality enhances, cost reduces.
In order to realize these purposes and other advantages according to the present invention, the invention is realized by the following technical scheme:
The present invention provides a kind of charging and discharging lithium battery driving protection system, including by power module, program control module and battery
The chip of management of charging and discharging module synthesis, the program control module are connected with charging and discharging currents detection module, short-circuit detecting module, electricity
Pond temperature monitoring module, charge and discharge Electric drive module and several external interfaces are integrated with electricity in the battery charging and discharging management module
Press detection module and the balance module for balanced each single-unit battery core storage electricity.
Preferably, the software interface of the programmable downloading control of an offer is provided on the chip.
Preferably, the power module input terminal connects lithium battery, and the output end of the power module is exported by a LDO
Module is connect with the peripheral circuit module of program control module, battery charging and discharging management module and chip respectively, the peripheral circuit
Module is connected on the external interface.
Preferably, the chip provides the control signal of the charge and discharge Electric drive module, the charge and discharge Electric drive module control
Make the charge and discharge process of the lithium battery;
The charge and discharge Electric drive module includes multichannel charging metal-oxide-semiconductor drive module and multichannel electric discharge metal-oxide-semiconductor drive module, institute
Stating charge and discharge Electric drive module includes p-type metal-oxide-semiconductor drive module and N-type metal-oxide-semiconductor drive module, and the charge and discharge Electric drive module has
The charge and discharge mode that PWM is adjusted;
Wherein, the charging metal-oxide-semiconductor drive module provides Charge Management, the electric discharge metal-oxide-semiconductor driving for the lithium battery
Module provides electric discharge management for the lithium battery.
Preferably, be connected on the external interface general purpose I/O module, for control switch gear switch key and fill
Discharge display module, communication module and electricity quantity display module for communicating with external module.
Preferably, the electricity quantity display module is used to show the electricity of the battery core;Electricity display pattern is multiple LED light
Stepping electricity is shown or percentage figures electricity is shown.
Preferably, the voltage detection module and balance module are connect with each battery core respectively, the voltage detecting
The output end of module and the control terminal of balance module are connect with the program control module respectively.
Preferably, the battery capacity detection module, short-circuit detecting module, current detection module and battery temperature monitoring
Module is integrated in inside the battery charging and discharging management module, the battery capacity detection module, short-circuit detecting module, electric current inspection
The input terminal for surveying module and battery temperature monitoring modular is connect with the lithium battery, the battery capacity detection module, short circuit
The output end of detection module, current detection module and battery temperature monitoring modular is connect with the program control module.
Preferably, the battery capacity detection module, short-circuit detecting module, current detection module and battery temperature monitoring
Module is arranged outside the battery charging and discharging management module as standalone module, the battery capacity detection module, short circuit inspection
The input terminal for surveying module, current detection module and battery temperature monitoring modular is connect with the lithium battery, the battery capacity
Detection module, short-circuit detecting module, output end and the program control module of current detection module and battery temperature monitoring modular
Connection.
The present invention is include at least the following beneficial effects:
Charging and discharging lithium battery provided by the invention drives protection system, overcharges protection containing single-unit, single-unit Cross prevention, fills
Electric overcurrent protection, electric discharge overcurrent protection, short-circuit protection, battery temperature monitoring modular, communication module, switch key and charge and discharge are aobvious
Show module, electricity quantity display module, PWM output module, LDO output module, multichannel charge and discharge metal-oxide-semiconductor drive module and equalizing circuit
The functions such as module are that a kind of peripheral circuit is simple, defencive function is perfect, low in energy consumption, reliability improves, function enhancing, may be programmed
The integrated circuit chip system that control, confidentiality enhancing, cost reduce.It is especially suitable for the products such as dust catcher household electrical appliances/garden instrument
Requirement to charged lithium cells and low-power consumption.
Further advantage, target and feature of the invention will be partially reflected by the following instructions, and part will also be by this
The research and practice of invention and be understood by the person skilled in the art.
Detailed description of the invention
Fig. 1 is the chip carrier composition that charging and discharging lithium battery of the present invention drives protection system;
Fig. 2 is the module frame chart of protection system of the present invention;
Fig. 3 is the application schematic diagram of protection system of the present invention in embodiment;
In figure: 100, lithium battery;200, battery charging and discharging management module (AFE/DFE);210, single-unit voltage detection module;
220, balance module;230, battery capacity detection module;240, battery temperature monitoring modular;250, charging and discharging currents detect mould
Block;260, short-circuit detecting module;300, program control module (MCU);310, external interface;400, power module;410, LDO is exported;
500, peripheral circuit;510, charge metal-oxide-semiconductor drive module;520, electric discharge metal-oxide-semiconductor drive module;530, electricity quantity display module;
540, general purpose I/O module;550, switch key and charge and discharge display module;560, communication module;600, human-computer interaction interface.
Specific embodiment
Present invention will be described in further detail below with reference to the accompanying drawings, to enable those skilled in the art referring to specification text
Word can be implemented accordingly.
It should be appreciated that such as " having ", "comprising" and " comprising " term used herein are not precluded one or more
The presence or addition of a other elements or combinations thereof.
Charging and discharging lithium battery of the invention drives protection system, including program control module (MCU) 300, battery charging and discharging management
Module (AFE/DFE) 200 and power module 400, power module 400 are program control module (MCU) for providing stabilized power supply
300, battery charging and discharging management module (AFE/DFE) 200 is powered.
As shown in Figure 1, the chip architecture of protection system is battery charging and discharging management module (AFE/DFE) 200 and program-controlled mould
The chip body frame structure of 300 two parts of block (MCU) synthesis.
<embodiment one>
As shown in Figure 1-3, communication link is connected to multichannel charging metal-oxide-semiconductor drive module 510, leads to program control module (MCU) 300 respectively
With I/O module 540, multichannel electric discharge metal-oxide-semiconductor drive module 520, battery capacity detection module 230, it is used for control switch and gear
And the switch key that shows of charge and discharge and charge and discharge display module 550, for the communication module 560 of communication and for overcurrent
The charging and discharging currents detection module 250 of protection.
The charging and discharging lithium battery driving protection system can be for as the further preferred of above embodiment, battery fills
Battery voltage sensing module 210 is integrated in electric discharge management module (AFE/DFE) 200 and for balanced each single-unit battery power
Balance module 220.
210 one end of single-unit voltage detection module is connected with single-unit battery core anode, for reading single-unit voltage.Meanwhile single-unit
Its limit value for being used to detect voltage in single-unit battery core charge and discharge process of voltage detection module 210.
The input terminal of battery capacity detection module 230 is connect with lithium battery 100,230 output end of battery capacity detection module
It is connected with program control module (MCU) 300.
The balance module 220 is connect with each battery core, 220 output end program control module (MCU) of balance module, 300 phase
Even, for controlling battery power euqalizing current.
As the further preferred of above embodiment, the chip provides the control letter of the charge and discharge Electric drive module
Number, the charge and discharge Electric drive module controls the charge and discharge process of the lithium battery;Charging and discharging lithium battery driving protection system is also wrapped
Include electricity quantity display module 530.530 input terminal of electricity quantity display module is connected with program control module (MCU) 300;Program control module (MCU)
300 control electricity quantity display modules 530 are shown.Electricity display pattern is that multiple LED light stepping electricity are shown or percentage figures are electric
Amount display.
As the further preferred of above embodiment, charge and discharge Electric drive module includes multichannel charging metal-oxide-semiconductor drive module
510 and multichannel discharge metal-oxide-semiconductor drive module 520, the charging metal-oxide-semiconductor drive module 510 include p-type metal-oxide-semiconductor drive module and N
Type metal-oxide-semiconductor drive module is one or more charge management module, the charge mode adjusted with PWM.
The electric discharge metal-oxide-semiconductor drive module 520 includes p-type metal-oxide-semiconductor drive module and N-type metal-oxide-semiconductor drive module;It is one
Road or multichannel electric discharge management module, can have the discharge mode of PWM adjusting.
As the further preferred of above embodiment, charging and discharging lithium battery driving protection system further includes LDO output 410
Module.The input terminal that LDO exports 410 modules is connected with power module 400, for providing the power supply of high-accuracy voltage.The electricity
400 input terminal of source module connects lithium battery 100, the output end of the power module 400 by LDO output module 410 respectively with
The peripheral circuit module 500 of program control module 300, battery charging and discharging management module 200 and chip connects, the peripheral circuit mould
Block 500 is connected on the external interface 310.
As the further preferred of above embodiment, the soft of the programmable downloading control of an offer is provided on the chip
Part interface, peripheral control program can be downloaded in chip by the software interface, chip according to the peripheral control program of downloading into
Row executes the corresponding command.
As the further preferred of above embodiment, it further includes short-circuit detecting mould that charging and discharging lithium battery, which drives protection system,
Block 260.
The battery capacity detection module 230, short-circuit detecting module 260, current detection module 250 and battery temperature prison
Survey module 240 be integrated in inside the battery charging and discharging management module, the battery capacity detection module, short-circuit detecting module,
The input terminal of current detection module and battery temperature monitoring modular is connect with the lithium battery, and the battery capacity detects mould
Block, short-circuit detecting module, current detection module and battery temperature monitoring modular output end connect with the program control module.
When battery capacity detection module 230 is integrated in 200 inside battery charging and discharging management module (AFE/DFE), battery
The battery power data that electric power detection module 230 will test are exported in real time to the program control module (MCU) 300;Program control module
(MCU) 300 battery capacity is calculated by internal software algorithm.
Battery temperature monitoring modular 240 is integrated in inside battery charging and discharging management module (AFE/DFE) 200, output end with
Program control module (MCU) 300 is connected, for detecting battery core temperature.
The charging and discharging currents detection module 250 is integrated in inside battery charging and discharging management module (AFE/DFE) 200, defeated
Outlet is connected with program control module (MCU) 300, for detecting charging and discharging currents;Its output end is connected with program control module (MCU) 300.
Short-circuit detecting module 260 is integrated in inside battery charging and discharging management module (AFE/DFE) 200, input terminal and its
The charging and discharging currents detection module 250 being internally integrated is connected, and input terminal is connected with journey charging and discharging currents detection module 250;Output
End is connected with program control module (MCU) 300;The protection of the setting short-circuit detecting module 260 in the program control module (MCU) 300
Electric current and guard time.
<embodiment two>
With embodiment one the difference lies in that as shown in the virtual coil in Fig. 2, the battery capacity detection module, short circuit inspection
Module, current detection module and battery temperature monitoring modular is surveyed to be arranged as standalone module in battery charging and discharging management mould
Outside block, the battery capacity detection module, short-circuit detecting module, current detection module and battery temperature monitoring modular it is defeated
Enter end to connect with the lithium battery, the battery capacity detection module, short-circuit detecting module, current detection module and battery temperature
The output end of degree monitoring modular is connect with the program control module.
<specific implementation process>
As shown in figure 3, specific embodiments of the present invention are given below in conjunction with above embodiment.
Charging and discharging lithium battery driving protection system is connected with several 100 battery cores of section lithium battery, and every economize on electricity core has single-unit inspection
It surveys conducting wire and is connected to chip pin.Human-computer interaction interface 600 is connect with charging and discharging lithium battery driving protection system, comprising external defeated
Enter and show the parts such as output, such as: switch key and 550 example of charge and discharge display module are aobvious for key-press input and charge and discharge
Show, 530 example of electricity quantity display module is that LED is shown or numeral output etc..Multichannel charging metal-oxide-semiconductor drive module 510 can pass through core
Piece control is realized to 100 battery core charge function of lithium battery comprising one or more p-type metal-oxide-semiconductor drive module or N-type metal-oxide-semiconductor
Drive module, while can have the charge mode of PWM adjusting;Multichannel electric discharge metal-oxide-semiconductor drive module 520 includes one or more
MOS drive module comprising one or more p-type metal-oxide-semiconductor drive module or N-type metal-oxide-semiconductor drive module can have simultaneously
The discharge mode that PWM is adjusted;If main line motor can be driven, it is especially suitable for dust catcher household electrical appliances/garden instrument of bi-motor.
The charge and discharge protecting of lithium battery 100 and control mainly by charging and discharging lithium battery driving protection system control and are realized
's.
Under charged state, multichannel charging metal-oxide-semiconductor drive module 510 is communicated with program control module (MCU) 300, program control module
(MCU) 300 voltage value that will be acquired according to program setting, real-time detection single-unit voltage detection module 210, program control module (MCU)
300 answer PWM duty cycle to give one or more MOS drive circuit part of charging according to current setting output phase, control charging modes.
When battery core voltage is higher than preset value, controls p-type metal-oxide-semiconductor drive module or N-type metal-oxide-semiconductor drive module stops charging.Battery fills
It discharges management module (AFE/DFE) 200 while including hardware circuit, control circuit stopping equally when single-unit over-voltage and is filled
Electricity.
Charging and discharging currents detection module 250 can integrate inside battery charging and discharging management module (AFE/DFE) 200,
It can be standalone module, output end is connected with program control module (MCU) 300, for detecting charging and discharging currents;Its output end and journey
Module (MCU) 300 is controlled to be connected.Charging and discharging currents detection module 250 exports the electric current of charging in real time to program control module (MCU)
300, program control module (MCU) 300 will detect size of current and go to carry out charging overcurrent protection, and pass through judgement according to program setting
Charging cut-off current is to determine whether charging terminates protection lithium battery 100.
Under discharge condition, multichannel charging metal-oxide-semiconductor drive module 510 stops output drive signal, program control module (MCU) 300
According to current gear control output phase answer PWM duty cycle give one or more electric discharge MOS drive circuit part, control its speed regulation and
The states such as soft start.Charging and discharging currents detection module 250 exports discharge current to program control module (MCU) 300, program control module
(MCU) 300 discharge current value will be detected, electric discharge overcurrent protection is carried out according to program setting according to program setting.Short-circuit detecting electricity
The protective current and guard time on road are controlled by program setting by program control module (MCU) 300, and discharge loop has short-circuit protection.
Short-circuit detecting circuit is connected with program control module (MCU) 300 and discharge current detection module, is in real time transferred to present discharge electric current
Program control module (MCU) 300, whether program control module (MCU) 300 needs to protect according to programmed decision current flow, and closes in time
One or more output mos drive part.
Battery temperature monitoring modular 240 can integrate inside battery charging and discharging management module (AFE/DFE) 200,
It can be standalone module, output end is connected with program control module (MCU) 300, for detecting battery core temperature.Battery temperature monitors mould
240 peripheral circuit 500 of block can connect the temperature-sensitives component such as NTC, and program control module (MCU) 300 will be according to program setting, according to detecting
Temperature data, judge whether to need to stop charge or discharge, guarantee battery core and system safety.
Charging and discharging lithium battery driving protection system also has a battery capacity detection function, battery capacity detection module 230,
Can integrate inside battery charging and discharging management module (AFE/DFE) 200, or standalone module, output end with it is program-controlled
Module (MCU) 300 is connected.When being integrated in 200 inside battery charging and discharging management module (AFE/DFE), battery capacity detects mould
The battery power data that block 230 will test are exported in real time to the program control module (MCU) 300;When as standalone module, journey
Control module (MCU) 300 is connected with 230 output end of battery capacity detection module, the electricity that battery capacity detection module 230 will test
Cell voltage information is sent to program control module (MCU) 300, and program control module (MCU) 300 calculates battery electricity by internal software algorithm
Amount.Program control module (MCU) 300 transfers data to electricity quantity display module 530 according to program, while can pass through communication module 560
Digital electricity data is exported, human-computer interaction module can show electricity, understand battery core state in real time convenient for user.
Equalizing circuit module is connected with battery charging and discharging management module (AFE/DFE) 200 and program control module (MCU) 300, can
100 charged state of lithium battery is detected simultaneously by battery charging and discharging management module (AFE/DFE) 200, will test
The state output of 100 battery core of lithium battery is to program control module (MCU) 300;When a batteries of wherein ceiling voltage reach equilibrium point
When, program control module (MCU) 300 carries out shunting electric discharge to it with regard to control, reduces its charging rate, as charging progresses, can be after
It is continuous that shunting electric discharge is carried out to other batteries for reaching equilibrium point, gradually it is achieved that the electric quantity balancing of whole battery cores.
A kind of charging and discharging lithium battery provided by the invention drives protection system, including program control module (MCU) 300;Battery fills
Discharge management module (AFE/DFE) 200 and power module 400.Wherein, program control module (MCU) 300 is also respectively connected with multichannel and fills
Electric metal-oxide-semiconductor drive module 510, multichannel electric discharge metal-oxide-semiconductor drive module 520, general purpose I/O module 540, battery temperature monitoring modular
240, for the switch key and charge and discharge display module 550 of control switch gear and display state, for the communication mould of communication
Block 560, the current detection module for detecting charging and discharging currents, battery capacity detection module 230 and electricity quantity display module
530;Battery charging and discharging management module (AFE/DFE) 200, it includes battery voltage sensing modules 210, battery capacity detection module
230, for the balance module 220 of balanced each single-unit battery power, the current detection module for detecting charging and discharging currents and
Battery temperature monitoring modular 240;Power module 400 is connect, for providing stabilized power supply with each module.
From the above mentioned, charging and discharging lithium battery provided by present application example drives protection system, is a kind of peripheral circuit letter
It is single, defencive function is perfect, low in energy consumption, reliability raisings, function enhancing, PLC technology, confidentiality enhance, the collection of cost reduction
At circuit chip system.It is especially suitable for the requirements of the products to charged lithium cells and low-power consumption such as dust catcher household electrical appliances/garden instrument.
Although the embodiments of the present invention have been disclosed as above, but its is not only in the description and the implementation listed
With.It can be applied to various suitable the field of the invention completely.It for those skilled in the art can be easily
Realize other modification.Therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is simultaneously unlimited
In specific details and legend shown and described herein.
Claims (9)
1. a kind of charging and discharging lithium battery drives protection system, which is characterized in that including being filled by power module, program control module and battery
The chip of management module of discharging synthesis, the program control module are connected with charging and discharging currents detection module, short-circuit detecting module, battery
Temperature monitoring module, charge and discharge Electric drive module and several external interfaces are integrated with voltage in the battery charging and discharging management module
Detection module and the balance module that electricity is stored for balanced each single-unit battery core.
2. charging and discharging lithium battery as described in claim 1 drives protection system, which is characterized in that be provided with one on the chip
The software interface of programmable downloading control is provided.
3. charging and discharging lithium battery as described in claim 1 drives protection system, which is characterized in that the power module input terminal
Connect lithium battery, the output end of the power module by a LDO output module respectively with program control module, battery charging and discharging management
Module and the connection of the peripheral circuit module of chip, the peripheral circuit module are connected on the external interface.
4. charging and discharging lithium battery as claimed in claim 3 drives protection system, which is characterized in that filled described in the chip offer
The control signal for drive module of discharging, the charge and discharge Electric drive module control the charge and discharge process of the lithium battery;
The charge and discharge Electric drive module include multichannel charging metal-oxide-semiconductor drive module and multichannel electric discharge metal-oxide-semiconductor drive module, it is described to fill
Electric discharge drive module includes p-type metal-oxide-semiconductor drive module and N-type metal-oxide-semiconductor drive module, and the charge and discharge Electric drive module has PWM
The charge and discharge mode of adjusting;
Wherein, the charging metal-oxide-semiconductor drive module provides Charge Management, the electric discharge metal-oxide-semiconductor drive module for the lithium battery
Electric discharge management is provided for the lithium battery.
5. charging and discharging lithium battery as claimed in claim 3 drives protection system, which is characterized in that connected on the external interface
There are general purpose I/O module, the switch key for control switch gear and charge and discharge display module, for what is communicated with external module
Communication module and electricity quantity display module.
6. charging and discharging lithium battery as claimed in claim 5 drives protection system, which is characterized in that the electricity quantity display module is used
In the electricity for showing the battery core;Electricity display pattern is that multiple LED light stepping electricity are shown or percentage figures electricity is shown.
7. charging and discharging lithium battery as described in claim 1 drives protection system, which is characterized in that the voltage detection module and
Balance module is connect with each battery core respectively, the output end of the voltage detection module and the control terminal point of balance module
It is not connect with the program control module.
8. charging and discharging lithium battery as described in claim 1 drives protection system, which is characterized in that the battery capacity detects mould
Block, short-circuit detecting module, current detection module and battery temperature monitoring modular are integrated in the battery charging and discharging management module
Inside, the input of the battery capacity detection module, short-circuit detecting module, current detection module and battery temperature monitoring modular
End is connect with the lithium battery, the battery capacity detection module, short-circuit detecting module, current detection module and battery temperature
The output end of monitoring modular is connect with the program control module.
9. charging and discharging lithium battery as described in claim 1 drives protection system, which is characterized in that the battery capacity detects mould
Block, short-circuit detecting module, current detection module and battery temperature monitoring modular are arranged as standalone module to be filled in the battery
Electric discharge management module-external, the battery capacity detection module, short-circuit detecting module, current detection module and battery temperature prison
The input terminal for surveying module is connect with the lithium battery, the battery capacity detection module, short-circuit detecting module, current detection module
And the output end of battery temperature monitoring modular is connect with the program control module.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201811091340.4A CN109347154B (en) | 2018-09-19 | 2018-09-19 | Lithium battery charging and discharging drive protection system |
PCT/CN2018/112749 WO2020056851A1 (en) | 2018-09-19 | 2018-10-30 | Charge-discharge drive and protection system for lithium battery |
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CN111009948A (en) * | 2019-12-26 | 2020-04-14 | 无锡全裕电子科技有限公司 | Lithium battery protection board capable of actively adjusting charging and discharging current and current adjusting mode thereof |
CN113300005A (en) * | 2020-02-21 | 2021-08-24 | Oppo广东移动通信有限公司 | Electric quantity detection device and method and electronic equipment |
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CN114156547A (en) * | 2021-10-27 | 2022-03-08 | 烟台东方电子玉麟电气有限公司 | Lithium battery management system and method |
CN114256932A (en) * | 2021-12-27 | 2022-03-29 | 上海商米科技集团股份有限公司 | Power distribution method and system of charging base |
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