CN108761337A - A kind of lithium battery management system - Google Patents
A kind of lithium battery management system Download PDFInfo
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- CN108761337A CN108761337A CN201810415109.XA CN201810415109A CN108761337A CN 108761337 A CN108761337 A CN 108761337A CN 201810415109 A CN201810415109 A CN 201810415109A CN 108761337 A CN108761337 A CN 108761337A
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 19
- 238000001514 detection method Methods 0.000 claims abstract description 43
- 239000000178 monomer Substances 0.000 claims abstract description 30
- 238000004891 communication Methods 0.000 claims abstract description 25
- 230000005540 biological transmission Effects 0.000 claims description 21
- 230000005611 electricity Effects 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 11
- 238000007667 floating Methods 0.000 claims description 9
- 238000011156 evaluation Methods 0.000 claims description 7
- 230000036541 health Effects 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 5
- 230000004888 barrier function Effects 0.000 claims description 2
- 230000006866 deterioration Effects 0.000 claims description 2
- 238000007689 inspection Methods 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 230000006872 improvement Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 208000032953 Device battery issue Diseases 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003862 health status Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
A kind of lithium battery management system provided by the invention includes battery pack, battery acquisition module, background processor, the battery pack includes multiple single batteries, the battery acquisition module includes battery pack collector and multiple single battery collectors, multiple single battery collectors connect one to one with each single battery, the battery pack collector is attached with battery pack, mode is connect by radio communication with background processor respectively for the battery collector and battery pack collector, the single battery collector is for acquiring single battery data information, the battery pack collector is used to acquire the data information of the battery pack, the background processor further includes fault detection unit to collect monomer battery voltage, single battery temperature, battery voltage and battery pack current are to carry out fault detect and judgement.
Description
Technical field
The present invention relates to electronic monitoring technical fields, more specifically to a kind of lithium battery management system.
Background technology
In recent years, domestic multiple commercial vendors sequentially release various products for battery testing system and battery failures detection,
The battery of BMMS accumulator monitorings management system, ten thousand Smartcom Automation Co., Ltd of Shenzhen such as including Yi Tuo Science and Technology Ltd.s
Monitor expert maintenance system etc..
But above-mentioned battery monitoring system use is to have line monitoring method, mounting box is safeguarded all extremely difficult and logical
The internal resistance progress fault detect for measuring battery is crossed, cost is excessively high, and the internal resistance of cell is small to arrive milliohm rank, and measurement accuracy also is difficult to reach
It is required that.
Invention content
In view of this, the purpose of the present invention is to provide a kind of lithium battery management system, to improve monitoring accuracy and detection
Efficiency reduces workload.
To achieve the above object, the present invention provides following technical solutions:Including:A kind of lithium battery management system, it is special
Sign is, including:Battery pack, battery acquisition module, background processor, the battery pack includes multiple single batteries, described
Battery acquisition module includes battery pack collector and multiple single battery collectors, and multiple single battery collectors are electric with each monomer
Pond connects one to one, and the battery pack collector is attached with battery pack, the battery collector and battery pack collector
Mode is connect by radio communication with background processor respectively,
For acquiring single battery data information, single battery data information includes the single battery collector:Monomer
Cell voltage and single battery temperature;
The battery pack collector is used to acquire the data information of the battery pack, and the battery pack data information includes:
Battery voltage, battery pack current;
The background processor further includes fault detection unit to collect monomer battery voltage, single battery temperature, electricity
Pond group voltage and battery pack current;
The fault detection unit is modified the battery pack current being collected into comprising according to drift calibration parameter β
And normalized current IMark+Configure current parameters αElectric current+, αElectric current+=IMark+/ISchool- β, wherein correcting current IRepair+=(IIt surveys-β)×αElectric current+;
The fault detection unit is collected it after battery pack current is modified, cooperation monomer battery voltage, single battery temperature, electricity
Pond group voltage is to carry out fault detect and judgement.
In a preferred embodiment, the fault detection unit is modified battery voltage comprising according to standard
Normal voltage VMarkAnd calibration voltage VSchoolCalculate voltage calibration parameter alphaVoltage, wherein correcting voltage VIt corrects=VIt surveys×αVoltage, the failure
After detection unit collects it battery pack current and battery voltage is modified, cooperation single battery temperature, single battery electricity
Pressure is to carry out fault detect and judgement.
In a preferred embodiment, the fault detection unit detection battery voltage and the single battery electricity in battery pack
The difference of the sum of pressure judges to export battery pack connecting fault, when the two difference is less than or equal to when the two difference is more than preset value
When preset value, judge to export battery pack connection normally.
In a preferred embodiment, when the fault detection unit detect monomer battery voltage value be 0, then judge to export
Single battery connecting fault;When detecting that monomer battery voltage value is higher than charge threshold, it is judged as overcharge;When detecting list
When body battery voltage value is less than discharge threshold, it is judged as overdischarge;When monomer battery voltage value is in floating charge range, detection is continuous
Time in floating charge range, upon this detection between be more than preset value when, be judged as floating charge overlong time;When detect monomer electricity
When cell voltage value is in not enough power supply, detection continuously be in state time, upon this detection between be more than preset value when, be judged as
It does not charge for a long time after electric discharge.
In a preferred embodiment, the fault detection unit further includes battery pack health Evaluation step:Carry out one
Secondary complete discharge;The threshold value T of complete discharge time t is obtained according to discharge current or discharge power enquiry of historical data archivesm;Root
The threshold value δ of battery power discharge average voltage undulating value is obtained according to complete discharge time enquiry of historical data archives1;When complete electric discharge
Time T > TmWhen, judge that battery capacity keeps good, when battery capacity keeps good, when battery power discharge voltage is equal
The undulating value δ of value2< δ1When, battery pack balancing is judged, as the undulating value δ of battery power discharge average voltage2> δ1When, judge
It is unbalanced to go out battery pack, at this time when determine have in the recent period carry out super-high-current electric discharge when, assessed from historical performance obtained in data it is close
Phase heavy-current discharge is to battery performance assessment result, to judge battery pack overall performance well but between single battery
Occur unbalanced, find unbalanced monomer, and suggests that user carries out balance charge/discharge;It is recent without carrying out super-high-current when determining
When electric discharge, the further discharge voltage mean value undulating value δ of more each single battery3And δ1Judge to deviate battery pack average state
Single battery finds unbalanced list to judge that battery pack overall performance is good but it is unbalanced to occur between single battery
Body, and suggest that user carries out balance charge/discharge.
In a preferred embodiment, the battery pack health Evaluation step further includes working as complete discharge time T < Tm
When, judge that battery capacity declines, further judges the undulating value δ of battery power discharge average voltage at this time2< δ1, judge electricity
Pond group is balanced, further judges that each battery cell deteriorates seriously in battery pack;When battery power discharge average voltage
Undulating value δ2> δ1When, judge that battery pack is unbalanced, at this time when determination has in the recent period carries out super-high-current electric discharge, from history
It can assess to obtain in data and be large current discharge in the recent period to battery performance assessment result, to judge that battery pack overall performance is bad
Change and occur unbalanced between each single battery, find backward single battery, and suggests that user replaces and fall behind single battery.
In a preferred embodiment, the single battery collector includes:Power circuit, voltage acquisition unit, temperature are adopted
Collect unit, wireless transmission unit, wherein:The power circuit is used to provide power supply for single battery collector;The voltage is adopted
Collection unit is used to acquire the cell voltage of the single battery;The temperature collecting cell is used to acquire the electricity of the single battery
Pond temperature;The wireless transmission unit is used for the cell voltage of the single battery and battery temperature is square by radio communication
Formula is sent to background processor.
In a preferred embodiment, the battery pack collector includes:Battery voltage collector and battery pack current are adopted
Storage, the battery voltage collector include power circuit, voltage acquisition unit, wireless transmission unit, the power circuit
For providing power supply for battery voltage collector;The voltage acquisition unit is for acquiring the battery voltage;The nothing
Line transmission unit is for by battery voltage, mode to be sent to background processor by radio communication;The battery pack current acquisition
Device includes power circuit, current acquisition unit, wireless transmission unit, and the power circuit is used to carry for battery pack current collector
Power supply source;The current acquisition unit is for acquiring the battery pack current;The wireless transmission unit is used for battery pack electricity
Stream is sent to background processor by communication.
In a preferred embodiment, the background processor further includes radio receiving unit, power circuit and fault alarm
Unit, the power circuit are used to provide power supply for background processor;The radio receiving unit is adopted to receive single battery
Battery information transmitted by the wireless transmission unit of storage, battery voltage collector and battery pack current collector, the event
Hinder alarm unit to receive the judgement information of fault detection unit and carry out corresponding fault alarm.
In a preferred embodiment, the communication using 433M wireless modes, Sub 1G communications,
WIFI communications or Bluetooth wireless communication mode.
It can be seen from the above technical scheme that the present invention realizes to a monomer electricity battery pack using wireless monitor mode
Cell voltage, the major parameters such as single battery temperature, battery voltage, battery pack current carry out real time on-line monitoring.The present invention adopts
Wire transmission is replaced with wireless communication, simplifies system, is easy to structure expansion.The failure detection schemes of the present invention are proposed for sentencing
Three basic parameters of disconnected battery pack health status:Complete discharge time, the steep undulating value for dropping voltage and discharge voltage mean value, and
Combination failure differentiates flow to more convenient carry out fault detect and judgement, and fault detect need not measure battery
Cost is greatly saved in internal resistance.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is a kind of lithium battery management system structural schematic diagram provided in an embodiment of the present invention;
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other
Embodiment shall fall within the protection scope of the present invention.
A kind of lithium battery management system as shown in Figure 1, including:Battery pack, battery acquisition module, background processor, it is described
Battery pack includes multiple single batteries, enumerates 2 single batteries in this present embodiment, it is notable that in other implementations
In example, the quantity of single battery can be 3, can also be more than 3, system that the present invention is not limited thereto.The battery is adopted
Collection module includes battery pack collector and 2 single battery collectors, and multiple single battery collectors are a pair of with each single battery one
It should connect.The single battery collector includes:Power circuit, voltage acquisition unit, temperature collecting cell, wireless transmission are single
Member, wherein:The power circuit is used to provide power supply for single battery collector;The voltage acquisition unit is described for acquiring
The cell voltage of single battery;The temperature collecting cell is used to acquire the battery temperature of the single battery;The wireless hair
Send unit for mode to be sent to background process by radio communication by the cell voltage of the single battery and battery temperature
Device.The battery pack collector includes:Battery voltage collector and battery pack current collector, the battery voltage acquisition
Device includes power circuit, voltage acquisition unit, wireless transmission unit, and the power circuit is used to carry for battery voltage collector
Power supply source;The voltage acquisition unit is for acquiring the battery voltage;The wireless transmission unit is used for battery pack electricity
Mode is sent to background processor to pressure by radio communication;The battery pack current collector includes power circuit, current acquisition
Unit, wireless transmission unit, the power circuit are used to provide power supply for battery pack current collector;The current acquisition unit
For acquiring the battery pack current;The wireless transmission unit is for by battery pack current, mode to be sent to by radio communication
Background processor.The background processor further includes radio receiving unit, power circuit and fault alarm unit, the power supply electricity
Road is used to provide power supply for background processor;The radio receiving unit is receiving single battery collector, battery voltage
Battery information transmitted by the wireless transmission unit of collector and battery pack current collector, the fault alarm unit is connecing
It receives the judgement information of fault detection unit and carries out corresponding fault alarm.The mode of fault alarm may include live jingle bell,
The modes such as bright light, short message, Email notify user.
In the present invention, the communication using 433M wireless modes, Sub 1G communications, WIFI without
Line communication mode or Bluetooth wireless communication mode.
The background processor further includes fault detection unit to collect monomer battery voltage, single battery temperature, electricity
Pond group voltage and battery pack current;The fault detection unit is modified the battery pack current being collected into comprising according to
Drift calibration parameter β and normalized current IMark+Configure current parameters αElectric current+, αElectric current+=IMark+/ISchool- β, wherein correcting current IRepair+=
(IIt surveys-β)×αElectric current+;The fault detection unit is modified battery voltage comprising according to standard voltage VMarkAnd
Calibration voltage VSchoolCalculate voltage calibration parameter alphaVoltage, wherein correcting voltage VIt corrects=VIt surveys×αVoltage, the fault detection unit is to it
After collection battery pack current and battery voltage are modified, cooperation single battery temperature, monomer battery voltage are to carry out failure
Detection and judgement.
The mode of fault detect and judgement of the present invention includes mainly following several:
1, the difference of the sum of monomer battery voltage in the fault detection unit detection battery voltage and battery pack, when
When the two difference is more than preset value, judge to export battery pack connecting fault, when the two difference is less than or equal to preset value, judge defeated
It is normal to go out battery pack connection.
2, when the fault detection unit detect monomer battery voltage value be 0, then judge export single battery connection therefore
Barrier.
3, when detecting that monomer battery voltage value is higher than charge threshold, it is judged as overcharge.
4, when detecting that monomer battery voltage value is less than discharge threshold, it is judged as overdischarge.
5, when monomer battery voltage value is in floating charge range, detection is continuously in the time of floating charge range, when detecting
When time is more than preset value, it is judged as floating charge overlong time.
6, when detecting that monomer battery voltage value is in not enough power supply, detection is continuously in the time of state, works as detection
When being more than preset value to the time, do not charge for a long time after being judged as electric discharge.
7, by judge single battery case temperature whether in normal range (NR) with temperature failure.
The fault detection unit further includes battery pack health Evaluation step:Carry out a complete discharge;According to putting
Electric current or discharge power enquiry of historical data archives obtain the threshold value T of complete discharge time tm;It is looked into according to complete discharge time
Ask the threshold value δ that historical data archives obtain battery power discharge average voltage undulating value1;As complete discharge time T > TmWhen, judge
Battery capacity keeps good, when battery capacity keeps good, as the undulating value δ of battery power discharge average voltage2< δ1
When, battery pack balancing is judged, as the undulating value δ of battery power discharge average voltage2> δ1When, judge that battery pack is unbalanced, this
When determine in the recent period have carry out super-high-current electric discharge when, from historical performance assess data in obtain in the recent period heavy-current discharge to battery
Group performance evaluation result is found not to judge that battery pack overall performance is good but it is unbalanced to occur between single battery
Balanced monomer, and suggest that user carries out balance charge/discharge;When determining in the recent period without carrying out super-high-current electric discharge, further relatively
The discharge voltage mean value undulating value δ of each single battery3And δ1The single battery for deviateing battery pack average state is judged, to judge
It is good but occur unbalanced between single battery to go out battery pack overall performance, finds unbalanced monomer, and suggest user's progress
Balance charge/discharge.
The battery pack health Evaluation step further includes working as complete discharge time T < TmWhen, judge battery capacity
Decline, further judges the undulating value δ of battery power discharge average voltage at this time2< δ1, judge battery pack balancing, further sentence
Break and each battery cell in battery pack and deteriorate seriously;As the undulating value δ of battery power discharge average voltage2> δ1When, judge
It is unbalanced to go out battery pack, at this time when determine have in the recent period carry out super-high-current electric discharge when, assessed from historical performance obtained in data it is close
Phase heavy-current discharge is to battery performance assessment result, to judge between the deterioration of battery pack overall performance and each single battery
Occur unbalanced, find backward single battery, and suggests that user replaces and fall behind single battery.
Lithium battery management system provided by the present invention is described in detail above.Each embodiment is adopted in specification
Described with progressive mode, each embodiment focuses on the differences from other embodiments, each embodiment it
Between identical similar portion just to refer each other.For the device disclosed in the embodiment, due to itself and method disclosed in embodiment
Corresponding, so description is fairly simple, reference may be made to the description of the method.It should be pointed out that being led for this technology
For the those of ordinary skill in domain, without departing from the principle of the present invention, can also to the present invention carry out it is several improvement and
Modification, these improvement and modification are also fallen within the protection scope of the claims of the present invention.
It should also be noted that, in the present specification, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only that
A little elements, but also include other elements that are not explicitly listed, or further include for this process, method, article or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except there is also other identical elements in the process, method, article or apparatus that includes the element.
Claims (10)
1. a kind of lithium battery management system, which is characterized in that including:Battery pack, battery acquisition module and background processor, it is described
Battery pack includes multiple single batteries, and the battery acquisition module includes battery pack collector and the acquisition of multiple single batteries
Device, multiple single battery collectors connect one to one with each single battery, and the battery pack collector is connected with battery pack
It connects, mode is connect by radio communication with background processor respectively for the battery collector and battery pack collector;
For acquiring single battery data information, single battery data information includes the single battery collector:Single battery
Voltage and single battery temperature;
For acquiring battery pack data information, the battery pack data information includes the battery pack collector:Battery voltage
And battery pack current;
The background processor further includes fault detection unit to collect monomer battery voltage, single battery temperature, battery pack
Voltage and battery pack current;
The fault detection unit is modified the battery pack current being collected into comprising according to drift calibration parameter β and mark
Quasi- electric current IMark+Configure current parameters αElectric current+, αElectric current+=IMark+/ISchool- β, wherein correcting current IRepair+=(IIt surveys-β)×αElectric current+;
The fault detection unit is collected it after battery pack current is modified, and coordinates monomer battery voltage, single battery
Temperature, battery voltage are to carry out fault detect and judgement.
2. lithium battery management system according to claim 1, which is characterized in that the fault detection unit is to battery pack electricity
Pressure is modified comprising according to standard voltage VMarkAnd calibration voltage VSchoolCalculate voltage calibration parameter alphaVoltage, wherein correcting
Voltage VIt corrects=VIt surveys×αVoltage, after the fault detection unit collects it battery pack current and battery voltage is modified, and
Coordinate single battery temperature, monomer battery voltage to carry out fault detect and judgement.
3. lithium battery management system according to claim 2, which is characterized in that the fault detection unit detects battery pack
The difference of the sum of monomer battery voltage in voltage and battery pack judges to export battery pack when the two difference is more than preset value
Connecting fault judges to export battery pack connection normally when the two difference is less than or equal to preset value.
4. lithium battery management system according to claim 2, which is characterized in that when the fault detection unit detects list
Body battery voltage value is 0, then judges to export single battery connecting fault;When detect monomer battery voltage value be higher than charge threshold
When, it is judged as overcharge;When detecting that monomer battery voltage value is less than discharge threshold, it is judged as overdischarge;Single battery electricity
When pressure value is in floating charge range, detection continuously be in floating charge range time, upon this detection between be more than preset value when, be judged as
Floating charge overlong time;When detecting that monomer battery voltage value is in not enough power supply, detection is continuously in the time of state, works as inspection
When measuring the time more than preset value, do not charge for a long time after being judged as electric discharge.
5. lithium battery management system according to claim 4, which is characterized in that the fault detection unit further includes battery
Group health Evaluation step:Carry out a complete discharge;It is obtained according to discharge current or discharge power enquiry of historical data archives
Obtain the threshold value T of complete discharge time tm;It is equal that battery power discharge voltage is obtained according to complete discharge time enquiry of historical data archives
It is worth the threshold value δ of undulating value1;As complete discharge time T > TmWhen, judge that battery capacity keeps good, when battery capacity is kept
When good, as the undulating value δ of battery power discharge average voltage2< δ1When, battery pack balancing is judged, when battery power discharge voltage
The undulating value δ of mean value2> δ1When, judge that battery pack is unbalanced, at this time when determination has in the recent period carries out super-high-current electric discharge, from
Historical performance is assessed to obtain in data and is large current discharge in the recent period to battery performance assessment result, to judge battery pack entirety
It is functional but occur unbalanced between single battery, unbalanced monomer is found, and suggest that user carries out balance charge/discharge;When
When determining in the recent period without carrying out super-high-current electric discharge, the further discharge voltage mean value undulating value δ of more each single battery3And δ1
The single battery for deviateing battery pack average state is judged, to judge battery pack overall performance well but between single battery
Occur unbalanced, find unbalanced monomer, and suggests that user carries out balance charge/discharge.
6. lithium battery management system according to claim 5, which is characterized in that the battery pack health Evaluation step
Further include working as complete discharge time T < TmWhen, judge that battery capacity declines, further judges that battery power discharge voltage is equal at this time
The undulating value δ of value2< δ1, judge battery pack balancing, further judge that each battery cell deteriorates sternly in battery pack
Weight;As the undulating value δ of battery power discharge average voltage2> δ1When, judge that battery pack is unbalanced, at this time when determine in the recent period have into
When row super-high-current discharges, obtains and is large current discharge in the recent period to battery performance assessment result from historical performance assessment data,
It is unbalanced to judge to occur between the deterioration of battery pack overall performance and each single battery, backward single battery is found, and build
It discusses user and replaces and fall behind single battery.
7. lithium battery management system according to claim 1, which is characterized in that the single battery collector includes:Electricity
Source circuit, voltage acquisition unit, temperature collecting cell, wireless transmission unit, wherein:The power circuit is used to be single battery
Collector provides power supply;The voltage acquisition unit is used to acquire the cell voltage of the single battery;The temperature acquisition list
Battery temperature of the member for acquiring the single battery;The wireless transmission unit is used for the cell voltage of the single battery
And mode is sent to background processor to battery temperature by radio communication.
8. lithium battery management system according to claim 1, which is characterized in that the battery pack collector includes:Battery
Group voltage collector and battery pack current collector, the battery voltage collector include power circuit, voltage acquisition unit,
Wireless transmission unit, the power circuit are used to provide power supply for battery voltage collector;The voltage acquisition unit is used for
Acquire the battery voltage;Wireless transmission unit is for by battery voltage, mode to be sent to background process by radio communication
Device;The battery pack current collector includes power circuit, current acquisition unit, wireless transmission unit, and power circuit is for being
Battery pack current collector provides power supply;The current acquisition unit is for acquiring the battery pack current;Wireless transmission unit
For by battery pack current, mode to be sent to background processor by radio communication.
9. lithium battery management system according to claim 7 or 8, which is characterized in that the background processor further includes nothing
Line receiving unit, power circuit and fault alarm unit, power circuit are used to provide power supply for background processor;It is described wirelessly to connect
Unit is received to receive the wireless transmission unit of single battery collector, battery voltage collector and battery pack current collector
Transmitted battery information, the fault alarm unit are corresponding former to the judgement information and progress for receiving fault detection unit
Barrier alarm.
10. lithium battery management system according to claim 1, which is characterized in that the communication uses 433M
Wireless mode, Sub 1G communications, WIFI communications or Bluetooth wireless communication mode.
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CN109856563A (en) * | 2019-01-10 | 2019-06-07 | 安徽天帆智能科技有限责任公司 | A kind of radio detection muti-piece battery system |
CN110018421A (en) * | 2019-05-22 | 2019-07-16 | 四川网达科技有限公司 | Battery state monitoring method and system |
CN111123130A (en) * | 2019-12-25 | 2020-05-08 | 北京空间飞行器总体设计部 | Satellite lithium ion battery voltage telemetering health on-orbit autonomous diagnosis method |
CN113325321A (en) * | 2021-07-02 | 2021-08-31 | 阳光电源股份有限公司 | Energy storage system floating charge state battery power failure detection method and energy storage system |
CN113791350A (en) * | 2021-08-06 | 2021-12-14 | 陕西汽车集团股份有限公司 | Battery failure prediction method |
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