CN109347154B - Lithium battery charging and discharging drive protection system - Google Patents
Lithium battery charging and discharging drive protection system Download PDFInfo
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- CN109347154B CN109347154B CN201811091340.4A CN201811091340A CN109347154B CN 109347154 B CN109347154 B CN 109347154B CN 201811091340 A CN201811091340 A CN 201811091340A CN 109347154 B CN109347154 B CN 109347154B
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- 238000007599 discharging Methods 0.000 title claims abstract description 105
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 64
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 64
- 238000001514 detection method Methods 0.000 claims abstract description 98
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 12
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- 238000005516 engineering process Methods 0.000 description 2
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- 239000003792 electrolyte Substances 0.000 description 1
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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
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Abstract
The present case discloses a lithium cell charge-discharge drive protection system, includes the chip by power module, program-controlled module and battery charge-discharge management module synthesis, program-controlled module is connected with charge-discharge current detection module, short circuit detection module, battery temperature monitoring module, charge-discharge drive module and a plurality of external interface, integrated voltage detection module and the balanced module that is used for balanced each single section electricity core to store the electric quantity in the battery charge-discharge management module. The lithium battery charging and discharging driving protection system provided by the embodiment of the application is an integrated circuit chip system which is simple in peripheral circuit, complete in protection function, low in power consumption, improved in reliability, enhanced in function, programmable in control, enhanced in confidentiality and reduced in cost.
Description
Technical Field
The invention relates to the technical field of charging protection, in particular to a lithium battery charging and discharging driving protection system.
Background
With the continuous development of household appliances of dust collectors and garden tools, users have more and more high acceptance of wireless products, and portable products are derived. Among them, lithium battery products are the trend of future battery development due to their excellent characteristics of small volume, high energy density, long cycle life, fast charge and discharge, long storage life, no memory effect, green environmental protection, low self-discharge rate, etc. In recent years, more and more portable products employ a lithium battery as a main power source, such as a dust collector, a gardening tool, and the like.
Due to the chemical characteristics of lithium batteries, in the case of over-discharge of the batteries, the electrolyte is decomposed to deteriorate the battery characteristics, and over-charging may cause the shortening of the battery life, the severe deterioration of the battery performance, or even the explosion. Therefore, in order to ensure the performance, service life, use safety and the like of the lithium batteries, all the lithium batteries need a protection circuit to realize a series of protection functions such as overcharge, overdischarge, overcurrent and the like when in use.
The basic functions of the lithium battery protection control circuit include overvoltage charging protection, overvoltage discharging protection, discharging overcurrent protection and short circuit protection. In addition, the lithium battery may cause voltage inconsistency among the single batteries after long-term normal charging and discharging, and a power equalization technology is required to perform equalization operation on the single batteries in the storage battery.
The lithium battery protection circuit commonly used at present generally comprises a lithium battery protection integrated circuit chip AFE/DFE, a main control MCU and a driving circuit thereof, a power supply circuit, an electric quantity state display circuit, a switch key detection circuit, a charging MOS and driving circuit, a discharging MOS and driving circuit and the like. The lithium battery protection integrated circuit chip AFE/DFE monitors the voltage of the battery and communicates with the main control MCU; and the master control MCU controls the on-off speed regulation of the charging and discharging MOS through the MOS drive circuit according to the current charging and discharging state and the battery voltage.
For example, the chinese patent application No. 201711158460.7 entitled ASIC chip system for lithium battery protection control has low integration level, limited functions, and no programmability, so the present invention is improved based on the prior patent application.
Disclosure of Invention
Aiming at the defects in the technology, the invention provides a lithium battery charging and discharging drive protection system, which is an integrated circuit chip system specially aiming at a lithium battery power supply system, and has the advantages of simple peripheral circuit, perfect protection function, low power consumption, improved reliability, enhanced function, programmable control, enhanced confidentiality and reduced cost.
To achieve these objects and other advantages in accordance with the present invention, the present invention is implemented by the following solutions:
the invention provides a lithium battery charging and discharging drive protection system which comprises a chip synthesized by a power supply module, a program control module and a battery charging and discharging management module, wherein the program control module is connected with a charging and discharging current detection module, a short circuit detection module, a battery temperature monitoring module, a charging and discharging drive module and a plurality of external interfaces, and a voltage detection module and a balancing module for balancing the stored electric quantity of each single battery cell are integrated in the battery charging and discharging management module.
Preferably, a software interface for providing programmable download control is arranged on the chip.
Preferably, the input end of the power supply module is connected with the lithium battery, the output end of the power supply module is respectively connected with the program control module, the battery charge-discharge management module and the peripheral circuit module of the chip through an LDO output module, and the peripheral circuit module is connected to the external interface.
Preferably, the chip provides a control signal of the charge and discharge driving module, and the charge and discharge driving module controls the charge and discharge process of the lithium battery;
the charging and discharging driving module comprises a plurality of paths of charging MOS tube driving modules and a plurality of paths of discharging MOS tube driving modules, the charging and discharging driving module comprises a P-type MOS tube driving module and an N-type MOS tube driving module, and the charging and discharging driving module has a charging and discharging mode regulated by PWM;
the charging MOS tube driving module provides charging management for the lithium battery, and the discharging MOS tube driving module provides discharging management for the lithium battery.
Preferably, the external interface is connected with a general I/O module, a switch button for controlling a switch gear, a charging and discharging display module, a communication module for communicating with the external module, and an electric quantity display module.
Preferably, the electric quantity display module is used for displaying the electric quantity of the battery cell; the electric quantity display mode is step electric quantity display or percentage digital electric quantity display of a plurality of LED lamps.
Preferably, the voltage detection module and the balancing module are respectively connected with the battery cores, and the output end of the voltage detection module and the control end of the balancing module are respectively connected with the program control module.
Preferably, battery power detection module, short circuit detection module, current detection module and battery temperature monitoring module are integrated inside the battery charge-discharge management module, battery power detection module, short circuit detection module, current detection module and battery temperature monitoring module's input with the lithium cell is connected, battery power detection module, short circuit detection module, current detection module and battery temperature monitoring module's output with programme-controlled module connects.
Preferably, battery power detection module, short circuit detection module, current detection module and battery temperature monitoring module are in as independent module setting battery charge and discharge management module is outside, battery power detection module, short circuit detection module, current detection module and battery temperature monitoring module's input with the lithium cell is connected, battery power detection module, short circuit detection module, current detection module and battery temperature monitoring module's output with programme-controlled module connects.
The invention at least comprises the following beneficial effects:
the lithium battery charging and discharging drive protection system provided by the invention has the functions of single-section overcharge protection, single-section overdischarge protection, charging overcurrent protection, discharging overcurrent protection, short-circuit protection, a battery temperature monitoring module, a communication module, a switch key, a charging and discharging display module, an electric quantity display module, a PWM (pulse width modulation) output module, an LDO (low dropout regulator) output module, a multi-path charging and discharging MOS (metal oxide semiconductor) tube drive module, an equalizing circuit module and the like, and is an integrated circuit chip system with simple peripheral circuit, complete protection function, low power consumption, improved reliability, enhanced function, programmable control, enhanced confidentiality and reduced cost. Is particularly suitable for the requirements of products such as dust collector household appliances/garden tools and the like on rechargeable lithium batteries and low power consumption.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a chip architecture diagram of a lithium battery charging and discharging driving protection system according to the present invention;
FIG. 2 is a block diagram of a protection system of the present invention;
FIG. 3 is a schematic diagram of an embodiment of a protection system according to the present invention;
in the figure: 100. a lithium battery; 200. a battery charge and discharge management module (AFE/DFE); 210. a single-node voltage detection module; 220. a balancing module; 230. a battery power detection module; 240. a battery temperature monitoring module; 250. a charge and discharge current detection module; 260. a short circuit detection module; 300. a program control Module (MCU); 310. an external interface; 400. a power supply module; 410. an LDO output; 500. a peripheral circuit; 510. a charging MOS tube driving module; 520. a discharge MOS tube driving module; 530. an electric quantity display module; 540. a general purpose I/O module; 550. a switch key and a charge-discharge display module; 560. a communication module; 600. and (5) a human-computer interaction interface.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
The lithium battery charging and discharging driving protection system comprises a program control Module (MCU)300, a battery charging and discharging management module (AFE/DFE)200 and a power module 400, wherein the power module 400 is used for providing a stable power supply and supplying power to the program control Module (MCU)300 and the battery charging and discharging management module (AFE/DFE) 200.
As shown in fig. 1, the chip architecture of the protection system is a chip main architecture formed by combining two parts, namely a battery charging and discharging management module (AFE/DFE)200 and a program control Module (MCU) 300.
< example one >
As shown in fig. 1-3, the program control unit (MCU)300 is communicatively connected to a multi-channel charging MOS transistor driving module 510, a general I/O module 540, a multi-channel discharging MOS transistor driving module 520, a battery level detecting module 230, a switch button and charging/discharging display module 550 for controlling switching, gear shifting, charging/discharging display, a communication module 560 for communication, and a charging/discharging current detecting module 250 for overcurrent protection.
As a further preferable embodiment of the above-mentioned lithium battery charging and discharging driving protection system, a battery voltage detection module 210 and an equalization module 220 for equalizing the electric quantity of each single cell are integrated in the battery charging and discharging management module (AFE/DFE) 200.
One end of the single-cell voltage detection module 210 is connected to the positive electrode of the single-cell, and is configured to read the single-cell voltage. Meanwhile, the single-cell voltage detection module 210 is configured to detect a limit value of a voltage of a single cell during a charging and discharging process.
The input end of the battery power detection module 230 is connected to the lithium battery 100, and the output end of the battery power detection module 230 is connected to the program control unit (MCU) 300.
The equalization module 220 is connected with each battery cell, and an output end of the equalization module 220 is connected with a program control unit (MCU)300 and used for controlling the electric quantity equalization current of the battery cell.
As a further preferable mode of the foregoing embodiment, the chip provides a control signal of the charge and discharge driving module, and the charge and discharge driving module controls a charge and discharge process of the lithium battery; the lithium battery charging and discharging driving protection system further comprises an electric quantity display module 530. The input end of the electric quantity display module 530 is connected with a program control unit (MCU) 300; the program control unit (MCU)300 controls the power display module 530 to display the power. The electric quantity display mode is step electric quantity display or percentage digital electric quantity display of a plurality of LED lamps.
As a further preferable mode of the foregoing embodiment, the charging and discharging driving module includes a multi-path charging MOS transistor driving module 510 and a multi-path discharging MOS transistor driving module 520, and the charging MOS transistor driving module 510 includes a P-type MOS transistor driving module and an N-type MOS transistor driving module, which are one-path or multi-path charging management modules and have a charging mode of PWM adjustment.
The discharge MOS tube driving module 520 comprises a P-type MOS tube driving module and an N-type MOS tube driving module; the system is a one-way or multi-way discharge management module and can have a discharge mode regulated by PWM.
As a further preferred mode of the foregoing embodiment, the lithium battery charging/discharging driving protection system further includes an LDO output 410 module. The input of the LDO output 410 module is connected to the power module 400 for providing a high precision voltage power supply. The input end of the power module 400 is connected with the lithium battery 100, the output end of the power module 400 is respectively connected with the program control module 300, the battery charging and discharging management module 200 and the peripheral circuit module 500 of the chip through the LDO output module 410, and the peripheral circuit module 500 is connected to the external interface 310.
As a further preferred embodiment of the foregoing embodiment, the chip is provided with a software interface for providing programmable download control, an external control program can be downloaded into the chip through the software interface, and the chip executes a corresponding command according to the downloaded external control program.
As a further preferred feature of the above embodiment, the lithium battery charge/discharge drive protection system further includes a short circuit detection module 260.
Battery power detection module 230, short circuit detection module 260, current detection module 250 and battery temperature monitoring module 240 are integrated inside the battery charge-discharge management module, battery power detection module, short circuit detection module, current detection module and battery temperature monitoring module's input with the lithium cell is connected, battery power detection module, short circuit detection module, current detection module and battery temperature monitoring module's output with programme-controlled module connects.
When the battery power detection module 230 is integrated inside the battery charging and discharging management module (AFE/DFE)200, the battery power detection module 230 outputs the detected cell power data to the program control unit (MCU)300 in real time; the program control Module (MCU)300 calculates the battery power through its internal software algorithm.
The battery temperature monitoring module 240 is integrated inside the battery charging and discharging management module (AFE/DFE)200, and the output end is connected to the program control Module (MCU)300 for detecting the cell temperature.
The charging and discharging current detection module 250 is integrated inside the battery charging and discharging management module (AFE/DFE)200, and the output end is connected with the program control Module (MCU)300 for detecting the charging and discharging current; the output end of which is connected with a program control Module (MCU) 300.
The short circuit detection module 260 is integrated inside the battery charge and discharge management module (AFE/DFE)200, and its input terminal is connected to the charge and discharge current detection module 250 integrated inside it, and its input terminal is connected to the charge and discharge current detection module 250; the output end is connected with a program control Module (MCU) 300; the program control unit (MCU)300 is configured to set a protection current and a protection time of the short circuit detection module 260.
< example two >
One difference from the embodiment is that, as shown by the dotted circle in fig. 2, the battery power detection module, the short circuit detection module, the current detection module, and the battery temperature monitoring module are disposed as independent modules outside the battery charging and discharging management module, the input terminals of the battery power detection module, the short circuit detection module, the current detection module, and the battery temperature monitoring module are connected to the lithium battery, and the output terminals of the battery power detection module, the short circuit detection module, the current detection module, and the battery temperature monitoring module are connected to the program control module.
< detailed description of the invention >
As shown in fig. 3, a specific example of the present invention is given below in conjunction with the above-described embodiment.
The lithium battery charging and discharging drive protection system is connected with a plurality of lithium batteries 100, and each battery has a single detection wire connected to a chip pin. The human-computer interface 600 is connected with the lithium battery charging and discharging driving protection system, and comprises external input, display output and other parts, such as: the switch button and charge/discharge display module 550 is exemplified by button input and charge/discharge display, and the power display module 530 is exemplified by LED display or digital output. The multi-path charging MOS transistor driving module 510 may implement a function of charging the electric core of the lithium battery 100 through chip control, and includes one or more paths of P-type MOS transistor driving modules or N-type MOS transistor driving modules, and may have a charging mode adjusted by PWM; the multi-path discharging MOS transistor driving module 520 includes one or more paths of MOS driving modules, which include one or more paths of P-type MOS transistor driving modules or N-type MOS transistor driving modules, and may have a discharging mode adjusted by PWM; can drive a plurality of circuits of motors, and is particularly suitable for the household dust collector/gardening tool with double motors.
The charging and discharging protection and control of the lithium battery 100 are mainly controlled and realized by a lithium battery charging and discharging driving protection system.
In a charging state, the multi-path charging MOS transistor driving module 510 communicates with the program control Module (MCU)300, the program control Module (MCU)300 sets a voltage value acquired by the single-node voltage detection module 210 according to a program, and the program control Module (MCU)300 outputs a corresponding PWM duty ratio to one or more paths of charging MOS driving circuit portions according to current settings to control a charging mode. And when the cell voltage is higher than a preset value, controlling the P-type MOS tube driving module or the N-type MOS tube driving module to stop charging. The battery charging/discharging management module (AFE/DFE)200 also includes hardware circuits that also stop charging when a single node is over-voltage.
A charging and discharging current detection module 250, which may be integrated inside the battery charging and discharging management module (AFE/DFE)200 or may be an independent module, and an output terminal of the charging and discharging current detection module is connected to the program control unit (MCU)300 and is configured to detect the charging and discharging current; the output end of which is connected with a program control Module (MCU) 300. The charging and discharging current detection module 250 outputs the charging current to the program control Module (MCU)300 in real time, and the program control Module (MCU)300 sets the charging current according to a program, detects the charging current, and determines whether the charging is finished to protect the lithium battery 100 by determining the charging cut-off current.
In the discharging state, the multi-path charging MOS transistor driving module 510 stops outputting the driving signal, and the program control Module (MCU)300 controls to output the corresponding PWM duty ratio to the one-path or multi-path discharging MOS driving circuit portion according to the current gear, so as to control the speed regulation and soft start of the one-path or multi-path discharging MOS driving circuit portion. The charging and discharging current detection module 250 outputs the discharging current to the program control Module (MCU)300, and the program control Module (MCU)300 detects the discharging current according to the program setting and performs discharging overcurrent protection according to the program setting. The protection current and the protection time of the short-circuit detection circuit are set by a program and controlled by a program control Module (MCU)300, and the discharge circuits are all short-circuit protected. The short circuit detection circuit is connected with the program control Module (MCU)300 and the discharge current detection module, the current discharge current is transmitted to the program control Module (MCU)300 in real time, and the program control Module (MCU)300 judges whether the current needs to be protected according to a program and timely closes one or more output MOS driving parts.
The battery temperature monitoring module 240 may be integrated inside the battery charging and discharging management module (AFE/DFE)200, or may be an independent module, and an output end of the battery temperature monitoring module is connected to the program control unit (MCU)300, and is configured to detect the cell temperature. The battery temperature monitoring module 240 may be connected to the peripheral circuit 500 of the battery temperature monitoring module 240 via temperature sensing components such as NTC, and the program control Module (MCU)300 may determine whether to stop charging or discharging according to the detected temperature data, so as to ensure the safety of the battery cell and the system.
The lithium battery charging and discharging driving protection system further has a battery power detection function, and the battery power detection module 230 may be integrated inside the battery charging and discharging management module (AFE/DFE)200, or may be an independent module, and its output end is connected to the program control unit (MCU) 300. When integrated inside the battery charging and discharging management module (AFE/DFE)200, the battery power detection module 230 outputs the detected cell power data to the program control Module (MCU)300 in real time; when the battery is used as an independent module, the program control Module (MCU)300 is connected to the output end of the battery power detection module 230, the battery power detection module 230 transmits the detected battery voltage information to the program control Module (MCU)300, and the program control Module (MCU)300 calculates the battery power through its internal software algorithm. The program control Module (MCU)300 transmits data to the electric quantity display module 530 according to a program, and meanwhile, the communication module 560 outputs digital electric quantity data, and the man-machine interaction module displays electric quantity, so that a user can know the state of the electric core in real time.
The equalization circuit module is connected with the battery charging and discharging management module (AFE/DFE)200 and the program control Module (MCU)300, and can simultaneously detect the charging state of the lithium battery 100 through the battery charging and discharging management module (AFE/DFE)200 and output the detected state of the electric core of the lithium battery 100 to the program control Module (MCU) 300; when one battery with the highest voltage reaches the equalization point, the program control Module (MCU)300 controls to shunt discharge to the battery, so as to reduce the charging speed, and as the charging progresses, the battery continues to shunt discharge to other batteries reaching the equalization point, thereby gradually achieving the balance of electric quantity of all the batteries.
The invention provides a lithium battery charging and discharging drive protection system, which comprises a program control Module (MCU) 300; a battery charge and discharge management module (AFE/DFE)200 and a power module 400. The program control Module (MCU)300 is further connected to a multi-charging MOS transistor driving module 510, a multi-discharging MOS transistor driving module 520, a general I/O module 540, a battery temperature monitoring module 240, a switch button for controlling a switch gear and a display state, a charging/discharging display module 550, a communication module 560 for communication, a current detection module for detecting a charging/discharging current, a battery power detection module 230, and a power display module 530, respectively; a battery charging and discharging management module (AFE/DFE)200, which includes a battery voltage detection module 210, a battery power detection module 230, an equalization module 220 for equalizing the power of each single cell, a current detection module for detecting charging and discharging current, and a battery temperature monitoring module 240; and a power module 400 connected to each module for providing a stable power.
From the foregoing, the lithium battery charging/discharging driving protection system provided in the embodiment of the present application is an integrated circuit chip system with simple peripheral circuit, complete protection function, low power consumption, improved reliability, enhanced functions, programmable control, enhanced security, and reduced cost. Is particularly suitable for the requirements of products such as dust collector household appliances/garden tools and the like on rechargeable lithium batteries and low power consumption.
While embodiments of the invention have been disclosed above, it is not intended that they be limited to the applications set forth in the specification and examples. It can be applied to all kinds of fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art. It is therefore intended that the invention not be limited to the exact details and illustrations described and illustrated herein, but fall within the scope of the appended claims and equivalents thereof.
Claims (7)
1. A lithium battery charging and discharging drive protection system is characterized by comprising a chip synthesized by a power supply module, a program control module and a battery charging and discharging management module, wherein the program control module is connected with a charging and discharging current detection module, a short circuit detection module, a battery temperature monitoring module, a charging and discharging drive module and a plurality of external interfaces, and a voltage detection module and a balancing module for balancing the stored electric quantity of each single battery cell are integrated in the battery charging and discharging management module; be provided with a software interface that provides the download control able to programme on the chip, software interface with programme-controlled module connects, voltage detection module and balanced module respectively with each battery core is connected, voltage detection module's the output and balanced module's the control end respectively with programme-controlled module connects, battery power detection module, short circuit detection module, current detection module and battery temperature monitoring module's input with the lithium cell is connected, battery power detection module, short circuit detection module, current detection module and battery temperature monitoring module's output with programme-controlled module connects.
2. The lithium battery charging and discharging drive protection system according to claim 1, wherein an input end of the power module is connected to the lithium battery, an output end of the power module is connected to the program control module, the battery charging and discharging management module and a peripheral circuit module of the chip through an LDO output module, and the peripheral circuit module is connected to the external interface.
3. The lithium battery charging and discharging drive protection system according to claim 1 or 2, wherein the chip provides a control signal of the charging and discharging drive module, and the charging and discharging drive module controls a charging and discharging process of the lithium battery;
the charging and discharging driving module comprises a plurality of paths of charging MOS tube driving modules and a plurality of paths of discharging MOS tube driving modules, the charging and discharging driving module comprises a P-type MOS tube driving module and an N-type MOS tube driving module, and the charging and discharging driving module has a charging and discharging mode regulated by PWM;
the charging MOS tube driving module provides charging management for the lithium battery, and the discharging MOS tube driving module provides discharging management for the lithium battery.
4. The lithium battery charging and discharging driving protection system as claimed in claim 2, wherein the external interface is connected with a general I/O module, a switch button for controlling a switch position, a charging and discharging display module, a communication module for communicating with the external module, and a power display module.
5. The lithium battery charging and discharging drive protection system of claim 4, wherein the electric quantity display module is configured to display the electric quantity of the battery cell; the electric quantity display mode is step electric quantity display or percentage digital electric quantity display of a plurality of LED lamps.
6. The lithium battery charge-discharge drive protection system according to claim 1, wherein the battery charge amount detection module, the short circuit detection module, the current detection module, and the battery temperature monitoring module are integrated inside the battery charge-discharge management module.
7. The lithium battery charge-discharge drive protection system according to claim 1, wherein the battery charge amount detection module, the short circuit detection module, the current detection module, and the battery temperature monitoring module are disposed outside the battery charge-discharge management module as independent modules.
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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| Application Number | Priority Date | Filing Date | Title |
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| CN201811091340.4A CN109347154B (en) | 2018-09-19 | 2018-09-19 | Lithium battery charging and discharging drive protection system |
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| CN109347154A CN109347154A (en) | 2019-02-15 |
| CN109347154B true CN109347154B (en) | 2022-06-17 |
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| CN109347154A (en) | 2019-02-15 |
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