CN104914383B - Battery health detection module and system and the battery with the detection module - Google Patents
Battery health detection module and system and the battery with the detection module Download PDFInfo
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- CN104914383B CN104914383B CN201510362567.8A CN201510362567A CN104914383B CN 104914383 B CN104914383 B CN 104914383B CN 201510362567 A CN201510362567 A CN 201510362567A CN 104914383 B CN104914383 B CN 104914383B
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Abstract
A kind of battery health detection module provided by the invention and the battery with the detection module, solve the problems, such as the health status monitoring of each single battery in battery pack, the voltage of single battery in battery pack, electric current, battery capacity and state of temperature are monitored, and detection module is made of one to form the integrated battery with detection module with each single battery；A kind of battery health detecting system is also provided, the measurement of detection module acquirement, record data are wirelessly sent to external data and receive control system, control system is received by external data to be analyzed and processed, even if battery pack has sealed, nor affect on external data and receive monitoring of the control system to each single battery health status in battery pack.The battery health detection module of the present invention includes current sense amplifier circuit, battery voltage detector circuit, temperature sensing amplifier circuit, RTC time controller and micro-control unit, module for power supply circuit.
Description
Technical field
The present invention relates to battery condition detection and administrative skill fields, and mould is detected more particularly to a kind of battery health
Block and system and the battery with the detection module.
Background technology
The battery pack for being presently used for offer electrical source of power has penetrated into the various aspects of public life, various to be based on filling
Electric tool, electric vehicle, uninterruptible power supply, communication base station backup battery etc. of electricity are in extensive use, especially with electricity
The development of motor-car, large capacity rechargeable battery are widely used, and must be made in the application by more piece single battery to form battery pack
Power source for vehicle.In practical applications, it is necessary to detect the current electric quantity of battery pack, the temperature of battery pack, voltage, electric current
Data understand the working condition of battery pack, and further requirement is exactly caused by it is to be understood that battery pack increases with usage time
Ageing of performance situation.Different battery types are also different to the safety requirements of temperature in use, charge and discharge.For energy density spy
Not high lithium battery is just necessarily required to overcharging, over-discharge will have more accurate measurement, above-mentioned two situations occurs
When cut off charge and discharge electric channel immediately, the more perfect effective measurement for requiring to include own temperature when working battery.It is presented above
Although being said to battery pack, actually these measurements will be directed to the charging and discharging state of each single battery in battery pack
Detection, no matter there is overcharge or overdischarge in which section single battery in battery pack, and batteries management system is all necessary
It is considered as abnormal signal, sends out shutdown instruction.Although manufacturer is usually when battery pack is dispatched from the factory to the single battery of battery pack
Selection, adaptation, the consistency of single battery parameter as possible in holding group have been carried out, but single battery is more in group, more not
Easy perfect match, and over time, differentiating phenomenon can occur for single battery parameter in battery pack, reduce electricity on the whole
The efficiency for charge-discharge of pond group due to the Parameters variation of individual monomers battery, causes the service life of battery pack to shorten.Problem above
It is particularly evident for lithium battery, significantly limit the energy efficiency levels and service life of lithium battery group.Solve battery
Overcharge, overdischarge, temperature anomaly and single battery state inconsistence problems be each battery pack factory core technology and
The performance of product core competitiveness, and the measurement of battery status is various manufacturers' technical problems to be solved first.
Traditional battery status detecting system be it is every section lithium battery on added with overcharge and overdischarge detection circuit, so
This group of signal is connected to external cell management system (BMS) with bus afterwards.When battery in battery pack is large number of, wired bus
Connection there is the problem of wiring is cumbersome, complicated, scalability is weak, while circuit is also easily damaged.Due to battery structure, volume
Limitation, traditional single battery can only measure electricity without battery power detection circuit using battery pack as an entirety
Pond electricity, therefore be difficult each electric quantity of single batteries situation of reflection, aging can not be positioned serious single battery.Such as
Detection, which is found out aged monomer battery and given, not in time adjusts, and the capacity of battery pack will become smaller, and efficiency is lower, and the service life will shorten,
Influence the highly effective and safe operation of entire battery pack.Since the serious single battery simple identification of aging in battery pack can not be gone out
Come, so it is difficult to extend the purpose of the working life of battery pack by carrying out daily maintenance to aged battery to cause, especially
Be lithium battery group in many cases cost account for entire product more than half.Therefore apparent waste is caused.
Invention content
The present invention in view of the defects existing in the prior art, provides a kind of battery health detection module and with the inspection
The battery of module is surveyed, the health status monitoring of each single battery in battery pack is solved the problems, such as, to the monomer in battery pack
Voltage, electric current, battery capacity and the state of temperature of battery are monitored, and detection module is made one with each single battery
The battery with detection module that the bodily form is integrally changed；
The present invention also provides a kind of battery health detecting system, measurement that detection module is obtained, record data with
It is wirelessly sent to external data and receives control system, receiving control system by external data is analyzed and processed, even if
Battery pack has sealed, and nor affects on external data and receives control system to the health status of each single battery in battery pack
Monitoring.
The technical scheme is that：
1. a kind of battery health detection module, which is characterized in that including current sense amplifier circuit, cell voltage
Detector circuit, temperature sensing amplifier circuit, RTC time controller, micro-control unit, wireless transceiver and module supply
Circuit；The current sense amplifier circuit, battery voltage detector circuit, temperature sensing amplifier circuit, RTC time control
Device processed, wireless transceiver connect micro-control unit respectively；The current sense amplifier circuit, battery voltage detector circuit,
Temperature sensing amplifier circuit is respectively used to measure electric current, voltage and the temperature of the single battery in battery pack, measures
Temperature, electric current, voltage signal send micro-control unit to, while time data is also sent to microcontroller by RTC time controller
Unit, the micro-control unit are handled and are stored to these measuring signals, and pass through charging, discharge current value to the time
Integral and calculating respectively obtains the charge value that the single battery has charged and the charge value that can be discharged, while judges the monomer electricity
Pond is charging or the percentage of the completion of discharge condition and each charge and discharge and charge and discharge time；And control wireless receiving and dispatching
When device is by obtained voltage, electric current, temperature data and the electricity data being calculated and charge and discharge degree and charge and discharge are measured
Between data sent in the form of wireless；The module for power supply circuit provides satisfactory work electricity for the detection module
Source.
2. the micro-control unit includes MCU microcontrollers, analog-digital converter, data storage, the current sense is put
Big device circuit, battery voltage detector circuit, temperature sensing amplifier circuit connect analog-digital converter, the analog-to-digital conversion respectively
Device connects data storage, and the data storage connects the wireless transceiver；The microcontroller connects the RTC respectively
Time controller and analog-digital converter, data storage, wireless transceiver；The current sense amplifier circuit, battery electricity
Pressure detector circuit, temperature sensing amplifier circuit send analog-to-digital conversion to by obtained temperature, electric current, voltage signal is measured
Device；Analog-digital converter under the control of the micro-controller carries out these measuring signals conversion of the analog signal to digital signal, turns
Conversion end signal is sent after the completion of changing to microcontroller, microcontroller sends write signal to data storage by the measurement of conversion
Data storage is written in data, signals to microcontroller after the completion of data storage storage, microcontroller is controlled after receiving signal
Internal circuit processed carries out next measuring signal conversion storage work, and the data storage storage is converted through analog-digital converter
It obtained voltage, electric current, temperature data and charge and discharge degree and charge and discharge time data and is calculated through microcontroller
Electricity data, and send wireless transceiver to.
3. the temperature sensing amplifier circuit measures battery temperature by the cooperation of temperature sensor, the electricity
Stream sense amplifier circuit measures battery operating current using cordless by the cooperation of magnetic current sensors, institute
The positive and negative end of battery voltage detector circuit connection single battery is stated, the voltage of single battery is measured.
4. the wireless transceiver is RF wireless transceivers, there is PCB invisible antennas.
5. the micro-control unit includes non-volatile data memory, the battery health detection is identified for storing
The numeric address Information ID of module.
6. a kind of battery with battery health detection module, which is characterized in that further include temperature sensor, electric current
Sensor, the temperature sensor are mounted on the outer surface of single battery, and the current sensor is fixed on single battery
On one terminal lead-out wire, the operating current of battery is measured by non-contacting mode, the temperature sensor connects the inspection
The temperature sensing amplifier circuit of module is surveyed, the current sensor connects the current sense amplifier electricity of the detection module
Road；The battery voltage detector circuit in parallel of the detection module is on the two-terminal lead-out wire of single battery.
7. the battery health detection module and temperature sensor, current sensor and single battery are encapsulated as one
Body has two terminals of positive and negative anodes on single battery packaging body, for the connection between multiple single batteries.
8. a kind of battery health detecting system, which is characterized in that including several described battery health will be carried
The single battery of detection module be cascaded composition battery pack and external data receive control system, the battery string formation
Connection connection load and external data receive control system, and the external data receives control system and includes wireless transceiver, outside
Data receiver control module and control switch, and the external data receives control module and receives battery health by wireless transceiver
The voltage of each single battery that condition detection module is sent, electric current, the measurement data of temperature and the electricity number that is calculated
According to, charge and discharge degree and charge and discharge time data, record analysis monitoring is carried out to the information received, if some battery exists
The abnormal conditions such as overcharge, overdischarge, temperature exceeding standard then send out control signal, by the way that switch is controlled to disconnect battery-powered time
Road sends abnormal signal prompting battery failure.
9. the external data receives control system and the reading signal for reading battery status, signal is sent first, in accordance with sequence
In comprising identification information ID, when identical with the ID in battery health detection module, then read the shape of corresponding single battery
State information is simultaneously handled.
10. the control switch is power switch.
The technique effect of the present invention：
After 1. the battery health detection module of the present invention can dispatch from the factory to rechargeable battery, completely filled after hundreds of times
The electric discharge course of work, performance gradually degrade until the life course of its failure is measured and recorded.Wirelessly by this
A little data are sent to external battery applications system.The battery behavior curve and service life curve provided by battery production factory,
Comprehensive actual use history, can be supplied to outer application system by the carrying load ability of battery and life expectancy at any time.
2. external data receives the complete health status that control system wirelessly reads batteries monomer battery
Information (cell voltage, electric current, temperature, electricity, charge and discharge degree and cell degradation degree), is realized by the way of wireless connection
External data receives control system and per the reliable communication between batteries state detection module.Cloth is not present in wireless communication way
Line problem, maintenance cost is low, can spread.Battery pack configuration becomes very flexible, influences cost, the wiring of reliability is not deposited
.The detection module that each battery carries is detected battery status, and battery status is wirelessly sent to
Situations such as external data receives control system, and external data receives control system processing overcharge, overdischarge and temperature anomaly is simultaneously
Necessary safeguard measure is performed, when cell degradation is serious, user is reminded to be carried out to battery again with reciprocity maintenance work.
3. each single battery with battery health detection module of the present invention has unique number ID marks
Know, system is facilitated to do the complete documentation from dispatching from the factory to scrapping to the single battery for carrying identification number, pass through filling every time to battery
The state of electric discharge and the complete documentation of time obtain actual battery electricity and completed cell health status table, to battery health shape
Condition table is analyzed, and facilitates the digestion period of system prediction battery, accurately provides actual battery electricity, and being capable of fast and easy
Degradation failure battery is positioned, and degradation failure single battery is handled in time, extends the service life of battery pack.
4. the current measurement of battery health detection module of the present invention and charging and discharging currents detection are using magnetic current sense
Device carries out off-line type measurement, can facilitate the measurement record for carrying out electric current in real time, and pass through calculating to be accurately obtained list
The electricity of body battery.Traditional electrokinetic cell system cannot detect the electricity of each monomer, and current measurement mode is in electricity
Bonus point leakage resistance in road since electric current is very big in electrokinetic cell system, can consume very big the resistance of resistance value very little
Energy, while the resistance of resistance value very little is also not easy accurately to control resistance value.It is measured using magnetic current sensors measurement method
Electric current, sensor are detached with battery, can accomplish not influencing current measurement precision, do not increase additional energy loss, and can be accurate
Really obtain the electricity of single battery.
5. the battery health detecting system in the present invention makes the single battery in battery pack under microcontroller control
The state of itself can be recorded automatically, from electricity and data record is reported, even detaching or exchanging battery pack with former application system,
The integrality of these records is nor affected on, battery pack is independent individual.The mode wirelessly linked up realizes external data reception
Separation between control module and battery pack；The communication of all above data is all based on applications of wireless technology to per batteries
State detection module, even battery pack has sealed, nor affect on battery management system and wirelessly read to obtain single battery
From the self health status data of report.
Description of the drawings
Fig. 1 is the battery health detection module of the present invention and the embodiment schematic diagram being connect with single battery.
Fig. 2 is the battery schematic diagram with battery health detection module of the present invention.
Fig. 3 is the battery health detecting system schematic diagram of the present invention.
Reference numeral lists as follows：1- single batteries, 2- detection modules, 3- temperature sensors, 4- magnetic current sensors, 5-
Antenna, 6-RTC time controllers, 7- current sense amplifiers, 8- temperature sensing amplifiers, 9- battery voltage detectors, 10- moulds
Block power supply circuit, 11-MCU microcontrollers, 12- analog-digital converters, 13- data storages, 14RF transceivers.
Specific embodiment
The embodiment of the present invention is described in further detail below in conjunction with attached drawing.
It is as shown in Figure 1, former for battery health detection module of the invention and the embodiment being connect with single battery
Reason figure.A kind of battery health detection module, including current sense amplifier circuit 7, battery voltage detector circuit 9, temperature
Spend sense amplifier circuit 8, RTC time controller (real-time clock) 6, module for power supply circuit 10 and micro-control unit, micro-control
Unit processed includes MCU microcontrollers 11, analog-digital converter (analog/digital signal conversion device and data-interface) 12, data storage
Device 13, RF transceivers 14；Wherein, RF transceivers include PCB invisible antennas.Module for power supply circuit is by the battery that itself is connected
Entire detection module provides satisfactory working power；Current sense amplifier circuit, battery voltage detector circuit, temperature
Sense amplifier circuit connects analog-digital converter, analog-digital converter connection data storage respectively, and data storage connection RF is received
Send out device；Microcontroller connects RTC time controller and analog-digital converter, data storage, RF transceivers respectively；Temperature sensing
Device cooperation temperature sensing amplifier circuit measures battery temperature, magnetic current sensors cooperation current sense amplifier circuit
Battery operating current is measured, the battery voltage detector circuit for being added in battery both ends measures the voltage of battery,
It measures obtained temperature, electric current, voltage signal and sends analog-digital converter to；Analog-digital converter is under the control of the micro-controller to this
A little measuring signals are converted, and conversion end signal is sent after converting to microcontroller, microcontroller send write signal to
Data storage is written in the measurement data of conversion by data storage, and microcontroller is signaled to after the completion of data storage storage
Device, control internal circuit carries out next measuring signal conversion storage work after microcontroller receives signal.Measures conversion
Electric current Value Data also is able to be sent to microcontroller by analog-digital converter, while the time data of RTC time controller is also sent
To microcontroller, the microcontroller identification positive and negative to current data is known that battery is in charged state or electric discharge shape
State, microcontroller to time and current value be calculated the charge value of battery, while can also access filling every time for battery
The state of electric discharge and charge and discharge time；When sending out data, microcontroller control RF transceivers by data storage voltage,
Electric current, the measurement data of temperature and electricity in microcontroller and charge and discharge degree and charge and discharge time data are sent to RF transmitting-receivings
Device, RF transceivers are sent by antenna in the form of wireless.
In Fig. 1, on the single battery 1 that connect of battery health detection module of the present invention, further including temperature sensing
Device 3, current sensor 4, temperature sensor 3 are mounted on the outer surface of single battery 1, and current sensor 4 is magnetic current sense
Device is fixed on a terminal lead-out wire of single battery 1, and the operating current of battery, temperature are measured by non-contacting mode
The temperature sensing amplifier circuit of sensor connecting detection module, the current sense amplifier of current sensor connecting detection module
Circuit；The battery voltage detector circuit in parallel of detection module is in the both ends lead-out wire of single battery.
As shown in Fig. 2, it is the battery schematic diagram with battery health detection module of the present invention.By battery health shape
Condition detection module 2 is fixed on the upper surface of single battery 1, and temperature sensor, current sensor and single battery are encapsulated
It is integrated, there are two terminals of positive and negative anodes, for the connection between multiple single batteries on single battery packaging body.
As shown in figure 3, the battery health detecting system schematic diagram for the present invention.A kind of battery health detection system
System, including by several Suo Shu with battery health detection module single battery be cascaded composition battery pack with
And external data receives control system, battery pack receives control system with load and external data and is connected in series with, and external data connects
It receives control system and includes wireless transceiver, external data reception control module and control switch, the control switch selection power
Switch, external data receive each monomer that control module receives the transmission of battery health detection module by wireless transceiver
The voltage of battery, electric current, the measurement data of temperature and the electricity data, charge and discharge degree and the charge and discharge time number that are calculated
According to record analysis monitoring being carried out to the information received, if there are overcharge, overdischarge, temperature exceeding standard etc. are different for some battery
Reason condition then sends out control signal, and disconnecting battery-powered circuit by power switch protects or send to battery pack
Abnormal signal prompts battery failure.
Each battery health detection module has the ID of oneself, i.e., each module has the numeric address letter of oneself
Breath numeric address information is written in the non-volatile data memory of each module, and numeric address information can be by wireless
Mode is sent to external data and receives control system, is known that by the numeric address information in read module data storage
The numeric address information of corresponding battery.The external data receives control system and sends reading battery status first, in accordance with sequence
Reading signal, comprising identification information ID in signal, when identical with the ID in battery health detection module, then read phase
It answers the status information of single battery and is handled.
The external data of the present invention receives control system and includes more battery RF signal transmitting and receivings, data analysis record, battery pack
Break-make controls these three critical functions.External data receives control system and receives battery health according to the communication protocol arranged in advance
Simultaneously processing is further processed in the cell health state information of condition detection module transmission.During work, external data receives control
System sends the signal for reading battery health, the information of ID is included in signal, as ID in battery health detection module
When identical with the id information that external data receives control system transmission, battery health detection module examines battery health
Measurement information is sent to external data and receives control system, and external data receives control system and the data of reception are recorded, are counted
It calculates, analysis, the software management system that profession is configured when necessary is managed measurement data；The data of reception are through data analysis meter
Calculation obtains the information such as electricity and electric current, voltage, the temperature of battery pack, and software fills battery health detection module transmission
The information such as electricity, electric discharge, temperature are monitored, if perceived there are warning messages such as overcharge, overdischarge, temperature exceeding standards, outside
Portion's data receiver control system is taken through control power switch and disconnects battery-powered circuit or notify to use fault type
Etc. information, remind user failure is handled.External data receives and control system is sent when reading signal, in sequence
The reading signal for reading battery status is sent, the status information of each single battery is read and is handled.
It should be pointed out that specific embodiment described above can make those skilled in the art that the present invention be more fully understood
It creates, but do not limit the invention in any way is created.Therefore, although this specification and embodiment have carried out the invention
Detailed description, it will be understood by those skilled in the art, however, that still can modify to the invention or equivalent
It replaces；And technical solution and its improvement of all spirit and scope for not departing from the invention, it is encompassed by wound of the present invention
It makes in the protection domain of patent.
Claims (10)
1. a kind of battery health detection module, which is characterized in that including current sense amplifier circuit, battery voltage detection
Device circuit, temperature sensing amplifier circuit, RTC time controller, micro-control unit, wireless transceiver and module for power supply electricity
Road；The current sense amplifier circuit, battery voltage detector circuit, temperature sensing amplifier circuit, RTC time control
Device, wireless transceiver connect micro-control unit respectively；The current sense amplifier circuit, battery voltage detector circuit, temperature
Degree sense amplifier circuit is respectively used to measure electric current, voltage and the temperature of the single battery in battery pack, the temperature measured
Degree, electric current, voltage signal send micro-control unit to, while time data is also sent to microcontroller list by RTC time controller
Member, the micro-control unit are handled and are stored to these measuring signals, and pass through charging, discharge current value to the product of time
Divide to calculate and respectively obtain the charge value that the single battery has charged and the charge value that can be discharged, while judge the single battery
It is charging or the percentage of the completion of discharge condition and each charge and discharge and charge and discharge time；And control wireless transceiver
Obtained voltage, electric current, temperature data and the electricity data being calculated and charge and discharge degree and charge and discharge time will be measured
Data are sent in the form of wireless；The module for power supply circuit provides satisfactory work electricity for the detection module
Source.
2. battery health detection module according to claim 1, which is characterized in that the micro-control unit includes
MCU microcontrollers, analog-digital converter, data storage, the current sense amplifier circuit, battery voltage detector circuit,
Temperature sensing amplifier circuit connects analog-digital converter respectively, and the analog-digital converter connects data storage, and the data are deposited
Reservoir connects the wireless transceiver；The microcontroller connects the RTC time controller and analog-digital converter, number respectively
According to memory, wireless transceiver；The current sense amplifier circuit, battery voltage detector circuit, temperature sensing amplifier
Circuit sends analog-digital converter to by obtained temperature, electric current, voltage signal is measured；Analog-digital converter is in the control of microcontroller
Under to these measuring signals carry out analog signal arrive digital signal conversion, after converting transmission conversion end signal to micro-control
Device processed, microcontroller send write signal and the measurement data of conversion are written data storage, data storage to data storage
Microcontroller is signaled to after the completion of storage, control internal circuit carries out next measuring signal after microcontroller receives signal
Conversion storage work, voltage, electric current, temperature data and the charge and discharge that the data storage storage is converted to through analog-digital converter
Electric degree and charge and discharge time data and the electricity data being calculated through microcontroller, and send wireless transceiver to.
3. battery health detection module according to claim 2, which is characterized in that the micro-control unit includes non-
Volatile data storage device, for storing the numeric address Information ID for identifying the battery health detection module.
4. the battery health detection module according to one of claims 1 to 3, which is characterized in that the temperature sensing
Amplifier circuit measures battery temperature by the cooperation of temperature sensor, and the current sense amplifier circuit passes through magnetic
The cooperation of current sensor measures battery operating current using cordless, and the battery voltage detector circuit connects
The positive and negative end of single battery is connect, the voltage of single battery is measured.
5. the battery health detection module according to one of claims 1 to 3, which is characterized in that the wireless receiving and dispatching
Device is RF wireless transceivers, has PCB invisible antennas.
6. a kind of band is just like the battery of the battery health detection module described in one of claim 1 to 5, which is characterized in that
Temperature sensor, current sensor are further included, the temperature sensor is mounted on the outer surface of single battery, and the electric current passes
Sensor is fixed on a terminal lead-out wire of single battery, and the operating current of battery is measured by non-contacting mode, described
Temperature sensor connects the temperature sensing amplifier circuit of the detection module, and the current sensor connects the detection module
Current sense amplifier circuit；The battery voltage detector circuit in parallel of the detection module is drawn at the both ends of single battery
On line.
7. the battery according to claim 6 with battery health detection module, which is characterized in that the battery is good for
Health condition detection module and temperature sensor, current sensor and single battery are packaged as a whole, and have on single battery packaging body
There are two terminals of positive and negative anodes, for the connection between multiple single batteries.
8. a kind of battery health detecting system, which is characterized in that including by several as described in one of claim 6 to 7
Single battery with battery health detection module be cascaded composition battery pack and external data receive control
System, the battery pack is connected in series with load and external data receives control system, and the external data receives control system packet
Wireless transceiver is included, external data receives control module and controls switch, the external data reception control module passes through wireless
Transceiver receive the voltage of each single battery that battery health detection module is sent, electric current, temperature measurement data with
And electricity data, charge and discharge degree and the charge and discharge time data being calculated, record analysis prison is carried out to the information received
It surveys, if there are the abnormal conditions such as overcharge, overdischarge, temperature exceeding standard for some battery, sends out control signal, opened by control
Shutdown opens battery-powered circuit or sends abnormal signal prompting battery failure.
9. battery health detecting system according to claim 8, which is characterized in that the external data receives control
System sends the reading signal for reading battery status first, in accordance with sequence, comprising identification information ID in signal, when with battery health
When condition detection mould ID in the block is identical, then reads the status information of corresponding single battery and handled.
10. battery health detecting system according to claim 8, which is characterized in that the control switch is power
Switch.
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| CN201510362567.8A CN104914383B (en) | 2015-06-26 | 2015-06-26 | Battery health detection module and system and the battery with the detection module |
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| CN201510362567.8A CN104914383B (en) | 2015-06-26 | 2015-06-26 | Battery health detection module and system and the battery with the detection module |
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