CN206619665U - A kind of long-range lithium titanate battery intelligent management system - Google Patents
A kind of long-range lithium titanate battery intelligent management system Download PDFInfo
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- CN206619665U CN206619665U CN201720443014.XU CN201720443014U CN206619665U CN 206619665 U CN206619665 U CN 206619665U CN 201720443014 U CN201720443014 U CN 201720443014U CN 206619665 U CN206619665 U CN 206619665U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The utility model belongs to lithium titanate battery control system technical field, and in particular to a kind of long-range lithium titanate battery intelligent management system.A kind of long-range lithium titanate battery intelligent management system, it is made up of central processing unit 1, data acquisition module 2, equalization control module 3, thermal management module 4, charge and discharge control module 5, data memory module 6, display panel module 7 and remote monitoring module 8, described central processing unit is connected with several data acquisition modules, equalization control module, thermal management module, charge and discharge control module, data memory module, display panel module and remote monitoring module respectively, and several data acquisition modules are connected with several corresponding lithium titanate battery modules 9 respectively.System architecture described in the utility model is simple, it is convenient to realize, can carry out automatic detection collection to the various working status parameters of lithium titanate battery group in the course of the work.
Description
Technical field
The utility model belongs to lithium titanate battery control system technical field, and in particular to a kind of long-range lithium titanate battery intelligence
Can management system.
Background technology
Existing much equipment, such as fork truck, by storage battery power supply come work, and these equipment are operationally, its
Position is often moved, therefore, is detected often more difficult to battery condition on the move.Existing monitoring side
Method is typically that will carry out related every detection to battery again after equipment is stopped.So battery can not be carried out in real time
Management, if exception occurs in working condition for battery.Such as heavy-current discharge, and just it is detected after end-of-job,
The best opportunity of battery service is often missed, or even has just detected after some battery cells of composition battery are scrapped different
Normal situation, thus can not Accurate Estimation go out the health status of battery, influence the maintenance to battery.Therefore complete set is needed
Remote supervisory and control(ling) equipment.
Remote supervisory and control(ling) equipment includes data acquisition, data transfer, the part of remote monitoring center three.Wherein part of data acquisition
It is main to complete to gather the data of monitored object accurately, in real time, mainly gather the cell voltage, battery current, temperature of battery pack
The data such as degree, battery SOC, CAN of the data acquisition function mainly by battery management system BMS and autonomous Design is complete
Into.The function of TCP data segment is mainly data that part of data acquisition is collected passing in monitoring accurately and timely
The heart, is realized by GPRS wireless transport modules.The major function of Surveillance center is the number passed over to data transmission module
According to being parsed, then shown in real time on monitoring interface respectively and data are saved in database, while one can be utilized
A little algorithms carry out after-treatment to data.
BMS plays an important roll for battery apparatus, up to hundreds and thousands of, the battery that General System is installed, in order to
These batteries, which are control effectively, can all install a set of battery management system.The main function of battery management system has：Monitoring
The information such as battery cell voltage, assembled battery total voltage, battery current, temperature, and carry out equal between each cell in battery bag
Weighing apparatus control, battery temperature and environment temperature control, charge and discharge control, SOC estimations, data display, remote data monitoring etc..One
Efficiently multiple functional BMS improves battery pack power utilization rate for optimization battery performance, increases battery continual mileage, prolongs
Long service time of battery, the safety in utilization for improving battery is all significant.
Utility model content
The purpose of this utility model is to provide a kind of long-range lithium titanate battery intelligent management system.
What the purpose of this utility model was realized in：
A kind of long-range lithium titanate battery intelligent management system, by central processing unit 1, data acquisition module 2, Balance route mould
Block 3, thermal management module 4, charge and discharge control module 5, data memory module 6, display panel module 7 and remote monitoring module 8 are constituted,
Described central processing unit respectively with several data acquisition modules, equalization control module, thermal management module, charge and discharge control mould
Block, data memory module, display panel module and remote monitoring module connection, if several data acquisition modules respectively with it is corresponding
Dry lithium titanate battery module 9 is connected.
Described central processing unit is the MCU of 16, and data acquisition module includes FPGA10, and the FPGA is connected with ADC
Data acquisition module 11 and clock distribution block 12, the adc data acquisition module are connected with clock distribution block, and FPGA also connects
It is connected to EPROM13, cpci bus 14 and CPCIe buses 15；FPGA is also circumscribed with DDR2 memory planes 16；The cpci bus is
J1CPCI, CPCIe bus are PXIe XJ3 or XJ4；The FPGA is also associated with trigger 17；The FPGA also connects with backboard
Device 18 is connect to be connected；The FPGA is XilinxV5FPGA.
Described equalization control module includes the interior equalization control module of Homogeneity between groups control module, group, group self-energy transfer
Energy transfer module between module and group, group self-energy shift module is connected by bus in group with each lithium titanate battery module,
It is provided with group and switchs between bus and each lithium titanate battery module in group；Equalization control module in each group with switching in group
Connection, controls the disconnection of switch and closure in each group；Energy transfer module passes through bus between group and each lithium titanate electricity between group
Bus is connected in the group of pond group, is provided with switch, Homogeneity between groups control module between group in each group between bus and group between bus
Switch and be connected between each group, control disconnection and the closure switched between each group.
Thermal management module includes heating system and cooling system, and heating system includes electrical-heating film and power supply, electrical heating
Film is located between adjacent lithium titanate battery module, and power supply is powered to electrical-heating film；Cooling system includes cooling water, circulation fluid
Body runner and water pump, circulating liquid runner are located between adjacent lithium titanate battery module；It is installed in lithium titanate battery module
Multiple temperature sensors are connected with central processing unit；Switch is each equipped between electrical-heating film and power supply, each switch is equal
Individually it is connected with equalization control module in the group of equalization control module；The circulating liquid runner in the form of sheets structure microchannel put down
Row body, is provided with multiple separate pipelines inside the parallel body of microchannel；Valve is mounted on each circulating liquid runner,
Each valve is individually connected with equalization control module in the group of equalization control module；In the different circulating liquid runner
Cooling water is using flowing to identical setting or using flowing to different settings or using both mixing；The cooling water is stored in
In self-contained water reservoir, water pump is used to extract the cooling water in water tank, and cooling water flows along circulation flow channel for liquids.
Described remote monitoring module includes switching value input circuit, and the value of input switch amount is gathered to central processing unit；
Keying signal collection circuit, communication baud rate and module's address are set by toggle switch；Communication interface circuit, using based on
On-off signal data are uploaded to equalization control module by the RS-485 communication modes of Modbus agreements by central processing unit,
Switching value data is received from equalization control module, and real-time Communication for Power is kept with equalization control module；Switching value output circuit, center
Processor receives the output switch parameter control information that equalization control module is sent, and the work of controlling switch by communication interface circuit
Make state, switching value input circuit is made up of the shaping being sequentially connected in series, delay circuit and optical coupling isolation circuit.
Described lithium titanate battery module is connected using series-parallel system.
The beneficial effects of the utility model are：System architecture described in the utility model is simple, it is convenient to realize, can be to metatitanic acid
Lithium battery group various working status parameters in the course of the work carry out automatic detection collection, and by the information transfer of collection to rear
Side's control computer, staff can understand lithium titanate battery group current operating state in time by rear computer, when lithium titanate electricity
Pond group can be adjusted in time when occurring abnormal, the remote monitoring and administration to lithium titanate battery group be realized, especially when lithium titanate battery group
Apply when being powered in fields such as communication base station, redundant electrical power, emergency power supply, military industry equipments for large scale equipment, can be timely and effective
Ensure the normal power supply of electrical equipment.
Brief description of the drawings
Fig. 1 is overall structure figure of the present utility model；
Fig. 2 is data acquisition module block structural diagram of the present utility model.
Embodiment
Long-range lithium titanate battery intelligent management system structure is as shown in Figure 1.By central processing unit 1, data acquisition module 2,
Equalization control module 3, thermal management module 4, charge and discharge control module 5, data memory module 6, display panel module 7 and remote monitoring
Module 8 is constituted, described central processing unit respectively with several data acquisition modules, equalization control module, thermal management module, fill
Control of discharge module, data memory module, display panel module and remote monitoring module connection, several data acquisition modules difference
Connected with several corresponding lithium titanate battery modules 9.Its course of work is：(1) data collecting module collected lithium titanate first
Battery essential information (mainly includes lithium titanate battery voltage, lithium titanate battery electric current, lithium titanate battery temperature and environment temperature)；
(2) and then the data that acquisition module is gathered are sent to CPU and carry out analysis calculating, calculate the data such as the SOC of lithium titanate battery；
(3) judge what working condition lithium titanate battery is now arranged according to the result of processing data, if reaching critical value needs pair
Lithium titanate battery, which is managed, is issued by program control instruction, utilizes lithium titanate battery equalization control module, charge and discharge control mould
Block and thermal management module are managed control to lithium titanate battery；(4) by the lithium titanate battery essential information collected and calculating
The information such as SOC be sent to data display equipment and remote monitoring center in real time.The wherein accurate gathered data of data acquisition module
It is the basis that other modules are correctly performed, central processing unit is the brain of lithium titanate battery management system, carries out various tasks
Scheduling, determines to carry out any regulation and control to lithium titanate battery group.Balance module, thermal management module, charge and discharge control module are performed
The instruction that central processing unit is sent, regulates and controls to lithium titanate battery group.
Described central processing unit is the MCU of 16, and data acquisition module includes FPGA10, and the FPGA is connected with ADC
Data acquisition module 11 and clock distribution block 12, the adc data acquisition module are connected with clock distribution block, and FPGA also connects
It is connected to EPROM13, cpci bus 14 and CPCIe buses 15；FPGA is also circumscribed with DDR2 memory planes 16；The cpci bus is
J1CPCI, CPCIe bus are PXIe XJ3 or XJ4；The FPGA is also associated with trigger 17；The FPGA also connects with backboard
Device 18 is connect to be connected；The FPGA is XilinxV5FPGA.Data acquisition module, data acquisition module mainly gathers lithium titanate battery
Essential information, data acquisition is most important and most basic function in BMS, be carry out SOC estimation and Balance route management
Basis, only precise acquisition information they could normal work.It is generally necessary to gather lithium titanate battery voltage, lithium titanate battery electricity
The information such as stream and environment temperature.Lithium ion lithium titanate battery is more sensitive to voltage and temperature, the high-voltage value of normal range of operation
It is smaller with low voltage value difference, so each monomer lithium titanate battery voltage is gathered, every lmin collections once, the essence of collection
Degree will reach 0.005V；Monomer lithium titanate battery temperature is also monitored simultaneously, and collection period is lmin, and acquisition precision is 0.5 DEG C；
Lithium titanate battery group is series connection, as long as so the total current of collection lithium titanate battery group, is gathered once, the essence of collection every ls
Spend for 0.5A.
Central processing unit SOC estimates that a BMS vital task is exactly to carry out SOC estimations, by central processing unit according to adopting
The information of collection is calculated and obtained.Most common SOC estimation method is current integration method in current BMS, and others also have open-circuit voltage
Method, extended Kalman filter, neural network etc..
1) current integration method becomes due to requiring no knowledge about lithium titanate battery internal chemical course of reaction, lithium titanate battery state
Situations such as change, thus easily operated realization, but this method needs very high current measurement precision, and over time, SOC
Estimation error will constantly add up increase, cause estimation it is inaccurate；
2) open circuit voltage method be in lithium titanate battery when not in use, measure the SOC and lithium titanate battery of lithium titanate battery
The corresponding relation of open-circuit voltage, then estimates SOC by the open-circuit voltage of lithium titanate battery, thus can only without startup when
Time is used, and initial SOC is calibrated.
3) extended Kalman filter is that lithium titanate battery is regarded as a dynamical system, during SOC is numerous state parameters
One, SOC is calculated by the iteration constantly estimated, measured.Because rectification error ability is strong, shortcoming is that the algorithm is needed
Matrix computations are wanted to require higher to the arithmetic speed of processor.
4) neural network mainly calculates SOC by imitating the change of lithium titanate battery working condition, and this is accomplished by a lot
Lithium titanate battery status data by nervous system learn lithium titanate battery state change process, and data precision will height,
Not so mistake is easily produced.
The lithium titanate battery management system of monitoring calculates real-time SOC and first using open circuit voltage method calibration using ampere-hour method
Beginning SOC, the system designed using this patent is verified by uploading data to Surveillance center using expanded Kalman filtration algorithm
SOC.The SOC of lithium titanate battery bag is calculated according to the data collected, the minimum lithium titanate battery of capacity, Ran Houqi are found out in sequence
His lithium titanate battery capacity is compared with it, and whether see needs to carry out Balance route.
Described equalization control module includes the interior equalization control module of Homogeneity between groups control module, group, group self-energy transfer
Energy transfer module between module and group, group self-energy shift module is connected by bus in group with each lithium titanate battery module,
It is provided with group and switchs between bus and each lithium titanate battery module in group；Equalization control module in each group with switching in group
Connection, controls the disconnection of switch and closure in each group；Energy transfer module passes through bus between group and each lithium titanate electricity between group
Bus is connected in the group of pond group, is provided with switch, Homogeneity between groups control module between group in each group between bus and group between bus
Switch and be connected between each group, control disconnection and the closure switched between each group.Balanced management module, general power lithium titanate electricity
Pond is all made up of hundreds and thousands of lithium titanate batteries, and each lithium titanate battery is in production process because material and production technology
Influence can having differences property, the difference of working environment will also result in otherness during use.After long-time use, by
In the aging and the influence of environment of material, this species diversity can be increasing.This can influence the work of overall lithium titanate battery group to imitate
Rate and service life.During electric discharge, when some lithium titanate battery reaches electric discharge minimum, even if other lithium titanate batteries can be with
Continue to discharge, electric discharge must also stop.Conversely, when charging, when some lithium titanate battery voltage has reached that voltage is maximum
Value, even if other lithium titanate batteries are not full of also, charging must also stop.Because electric discharge is with that minimum metatitanic acid of voltage
Lithium battery is standard, and charging is using voltage highest lithium titanate battery as standard.If difference will result in greatly very much between them
Operating efficiency is very low, it is therefore desirable to carry out lithium titanate battery Balance route, makes the difference between lithium titanate battery as far as possible small.At present
The conventional equalization methods of lithium ion lithium titanate battery are to carry out electric discharge and electric capacity progress energy transfer using resistance.
Charge and discharge control module, in order to prevent overcharging, lithium lithium titanate battery will be charged stage by stage, be generally divided into 4
Stage：
1) trickle charge, the lithium titanate battery that trickle charge is discharged completely primarily directed to those electricity, general voltage is low
Lithium titanate battery is considered as in 3V to be discharged, it is necessary to carry out trickle charge to lithium titanate battery precharge, trickle charge
It is to be charged with 0.1A constant current.
2) constant-current charge, when lithium titanate battery voltage reaches the limit value of constant-current charge, it is possible to increase electric current from trickle
Charging is switched to constant-current charge state, and the electric current of general constant-current charge is between 0.2~2A, and this is the quick charge stage.
3) constant-voltage charge, switches to constant pressure and fills when lithium titanate battery voltage continues and increases and reach the limit value of constant-voltage charge
Electricity, this when, lithium titanate battery was almost filled with, and in order to not damage the performance of lithium titanate battery, preserved constant-voltage charge,
It is gradually reduced with the rise charging current of lithium titanate battery voltage.
4) charging termination, in the later stage of constant-voltage charge, electric current is less and less, until electric current is zero, it is possible to think metatitanic acid
Lithium battery fills with electricity, and charging terminates with regard to this.
Thermal management module includes heating system and cooling system, and heating system includes electrical-heating film and power supply, electrical heating
Film is located between adjacent lithium titanate battery module, and power supply is powered to electrical-heating film；Cooling system includes cooling water, circulation fluid
Body runner and water pump, circulating liquid runner are located between adjacent lithium titanate battery module；It is installed in lithium titanate battery module
Multiple temperature sensors are connected with central processing unit；Switch is each equipped between electrical-heating film and power supply, each switch is equal
Individually it is connected with equalization control module in the group of equalization control module；The circulating liquid runner in the form of sheets structure microchannel put down
Row body, is provided with multiple separate pipelines inside the parallel body of microchannel；Valve is mounted on each circulating liquid runner,
Each valve is individually connected with equalization control module in the group of equalization control module；In the different circulating liquid runner
Cooling water is using flowing to identical setting or using flowing to different settings or using both mixing；The cooling water is stored in
In self-contained water reservoir, water pump is used to extract the cooling water in water tank, and cooling water flows along circulation flow channel for liquids.Thermal management module, titanium
The quality and the operating temperature of lithium titanate battery of acid lithium battery service behaviour have very big relation, when operating temperature is higher, titanium
The energy of acid lithium battery can be discharged fully, but this can shorten the service life of lithium titanate battery；When operating temperature is inclined
When low, the activity reduction electric conductivity of lithium titanate battery chemistry inside is deteriorated, and the resistance of corresponding lithium titanate battery will become
Greatly, the power of internal consumption also just increases so that the energy that lithium titanate battery can be released actually diminishes.Accordingly, it would be desirable to carry out titanium
Acid lithium battery heat management, makes the operating temperature of lithium titanate battery be maintained in most suitable scope.It is general by dry radiating and
Resistant heating is realized.Generally, lithium ion lithium titanate battery operating temperature range is：During charging, -10~45 DEG C；During electric discharge ,-
30~55 DEG C.Optimal operating temperature range is 20~40 DEG C.
Described remote monitoring module includes switching value input circuit, and the value of input switch amount is gathered to central processing unit；
Keying signal collection circuit, communication baud rate and module's address are set by toggle switch；Communication interface circuit, using based on
On-off signal data are uploaded to equalization control module by the RS-485 communication modes of Modbus agreements by central processing unit,
Switching value data is received from equalization control module, and real-time Communication for Power is kept with equalization control module；Switching value output circuit, center
Processor receives the output switch parameter control information that equalization control module is sent, and the work of controlling switch by communication interface circuit
Make state, switching value input circuit is made up of the shaping being sequentially connected in series, delay circuit and optical coupling isolation circuit.
Described lithium titanate battery module is connected using series-parallel system., it is necessary to lithium titanate during lithium titanate battery work
Some state parameters during battery operation are monitored and transmitted.On the one hand progress data are needed to lead between each lithium titanate battery group
Letter, so that the information of voltage and capacity information of each lithium titanate battery group are transmitted, to ensure not having too big difference between them
Property.On the other hand needs upload to information BMS main control chip, and main control chip is other control moulds according to the information received
Block provides the data needed for them, and such as transmission SOC related datas pass to the status information of lithium titanate battery far to controller
Range monitoring module, and upload to Surveillance center.BMS also receives the information that other modules are sended over simultaneously, then according to these
Information makes rational lithium titanate battery control strategy.
Described above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improve and
Retouching also should be regarded as protection domain of the present utility model.Simultaneously for unaccounted structure in this patent, due to said structure all
It is techniques known, therefore omit herein.
Claims (6)
1. a kind of long-range lithium titanate battery intelligent management system, by central processing unit, data acquisition module, equalization control module,
Thermal management module, charge and discharge control module, data memory module, display panel module and remote monitoring module composition, its feature exist
In：Described central processing unit is automatically controlled with several data acquisition modules, equalization control module, thermal management module, charge and discharge respectively
Molding block, data memory module, display panel module and remote monitoring module connection, several data acquisition modules respectively with it is corresponding
Several lithium titanate battery modules connection.
2. a kind of long-range lithium titanate battery intelligent management system according to claim 1, it is characterised in that：Described center
Processor is the MCU of 16, and data acquisition module includes FPGA, and the FPGA is connected with adc data acquisition module and clock point
With module, the adc data acquisition module is connected with clock distribution block, FPGA be also associated with EPROM, cpci bus and
CPCIe buses；FPGA is also circumscribed with DDR2 memory planes；The cpci bus be J1CPCI, CPCIe buses be PXIe XJ3 or
XJ4；The FPGA is also associated with trigger；The FPGA is also connected with back panel connector；The FPGA is XilinxV5FPGA.
3. a kind of long-range lithium titanate battery intelligent management system according to claim 1, it is characterised in that：Described equilibrium
Control module includes the interior equalization control module of Homogeneity between groups control module, group, organizes energy transfer between self-energy shift module and group
Module, group self-energy shift module is connected by bus in group with each lithium titanate battery module, bus and each metatitanic acid in group
It is provided with group and switchs between lithium battery module；Equalization control module is connected with switch in each group in group, is controlled in each group
The disconnection of switch and closure；Bus connects in the group that energy transfer module passes through bus between group and each lithium titanate battery group between group
Connect, be provided with switch between group in each group between bus and group between bus, the company of switch between Homogeneity between groups control module and each group
Connect, control disconnection and the closure switched between each group.
4. a kind of long-range lithium titanate battery intelligent management system according to claim 1, it is characterised in that：Thermal management module
Including heating system and cooling system, heating system includes electrical-heating film and power supply, and electrical-heating film is located at adjacent lithium titanate
Between battery module, power supply is powered to electrical-heating film；Cooling system includes cooling water, circulating liquid runner and water pump, circulation
Flow channel for liquids is located between adjacent lithium titanate battery module；Multiple temperature sensors in lithium titanate battery module are installed on in
Central processor is connected；Switch is each equipped between electrical-heating film and power supply, the group with equalization control module is each switched
Interior equalization control module is individually connected；The microchannel parallel body of circulating liquid runner structure in the form of sheets, it is parallel in microchannel
Internal portion is provided with multiple separate pipelines；Be mounted on valve on each circulating liquid runner, each valve with it is balanced
Equalization control module is individually connected in the group of control module；Cooling water in different circulating liquid runners, which is used, flows to identical set
Put or using the mixing for flowing to both different settings or use；The cooling water is stored in self-contained water reservoir, and water pump is used for
The cooling water in water tank is extracted, cooling water flows along circulation flow channel for liquids.
5. a kind of long-range lithium titanate battery intelligent management system according to claim 1, it is characterised in that：Described is long-range
Monitoring module includes switching value input circuit, and the value of input switch amount is gathered to central processing unit；Keying signal collection circuit, leads to
Cross toggle switch and communication baud rate and module's address are set；Communication interface circuit is logical using the RS-485 based on Modbus agreements
On-off signal data are uploaded to equalization control module by letter mode by central processing unit, are received and are opened from equalization control module
Data are measured in pass, and keep real-time Communication for Power with equalization control module；Switching value output circuit, central processing unit passes through communication interface electricity
Road receives the output switch parameter control information that equalization control module is sent, and the working condition of controlling switch, On-off signal electricity
It route the shaping being sequentially connected in series, delay circuit and optical coupling isolation circuit composition.
6. a kind of long-range lithium titanate battery intelligent management system according to claim 1, it is characterised in that：Described metatitanic acid
Lithium battery module is connected using series-parallel system.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109120056A (en) * | 2018-09-05 | 2019-01-01 | 北京北交新能科技有限公司 | A kind of rail traffic standard EMU booster battery and case system |
| US11460511B2 (en) * | 2018-02-20 | 2022-10-04 | Sk Innovation Co., Ltd. | Battery management system |
-
2017
- 2017-04-25 CN CN201720443014.XU patent/CN206619665U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11460511B2 (en) * | 2018-02-20 | 2022-10-04 | Sk Innovation Co., Ltd. | Battery management system |
| CN109120056A (en) * | 2018-09-05 | 2019-01-01 | 北京北交新能科技有限公司 | A kind of rail traffic standard EMU booster battery and case system |
| CN109120056B (en) * | 2018-09-05 | 2023-09-22 | 北京北交新能科技有限公司 | Auxiliary storage battery and box system for standard motor train unit for rail transit |
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