CN109347154A - Charging and discharging lithium battery drives protection system - Google Patents

Charging and discharging lithium battery drives protection system Download PDF

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Publication number
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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CN
China
Prior art keywords
module
battery
charging
discharging
lithium battery
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Granted
Application number
CN201811091340.4A
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Chinese (zh)
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CN109347154B (en
Inventor
倪祖根
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lake Electric Green Energy Technology Suzhou Co Ltd
Kingclean Electric Co Ltd
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Kingclean Electric Co Ltd
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Application filed by Kingclean Electric Co Ltd filed Critical Kingclean Electric Co Ltd
Priority to CN201811091340.4A priority Critical patent/CN109347154B/en
Priority to PCT/CN2018/112749 priority patent/WO2020056851A1/en
Publication of CN109347154A publication Critical patent/CN109347154A/en
Application granted granted Critical
Publication of CN109347154B publication Critical patent/CN109347154B/en
Active legal-status Critical Current
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Classifications

    • H02J7/0021
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0013Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • H02J7/0014Circuits for equalisation of charge between batteries
    • H02J7/0026
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00302Overcharge protection
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00304Overcurrent protection
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00306Overdischarge 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

Charging and discharging lithium battery drives protection system
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.
CN201811091340.4A 2018-09-19 2018-09-19 Lithium battery charging and discharging drive protection system Active CN109347154B (en)

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PCT/CN2018/112749 WO2020056851A1 (en) 2018-09-19 2018-10-30 Charge-discharge drive and protection system for lithium battery

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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
CN114035026A (en) * 2021-11-05 2022-02-11 银芯微(无锡)科技有限公司 Micro control unit chip for battery management system and chip abnormity detection method

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