CN110061551A - A kind of battery management system and method - Google Patents
A kind of battery management system and method Download PDFInfo
- Publication number
- CN110061551A CN110061551A CN201910488951.0A CN201910488951A CN110061551A CN 110061551 A CN110061551 A CN 110061551A CN 201910488951 A CN201910488951 A CN 201910488951A CN 110061551 A CN110061551 A CN 110061551A
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- Prior art keywords
- battery
- management system
- mbms
- voltage
- bams
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Links
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000012544 monitoring process Methods 0.000 claims abstract description 30
- 238000009825 accumulation Methods 0.000 claims abstract description 13
- 239000000470 constituent Substances 0.000 claims abstract description 4
- 238000007726 management method Methods 0.000 claims description 110
- 238000005265 energy consumption Methods 0.000 claims description 6
- 239000000178 monomer Substances 0.000 claims description 6
- 238000004146 energy storage Methods 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 3
- 238000011067 equilibration Methods 0.000 claims description 3
- 230000003862 health status Effects 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 239000012141 concentrate Substances 0.000 claims 1
- 230000008439 repair process Effects 0.000 abstract description 4
- 238000004891 communication Methods 0.000 abstract description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0016—Circuits for equalisation of charge between batteries using shunting, discharge or bypass circuits
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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 invention discloses a kind of battery management system and method, battery management system includes three-layer pipe reason structure, respectively BAMS, MBMS, BMU；BAMS battery stack management system is connected by communication protocol with PCS energy accumulation current converter for collecting junior's MBMS information；Middle management level of the MBMS management system for monitoring as battery management system, one end are connected by CAN bus with BAMS battery stack management system, and the other end is managed multiple BMU battery management units by CAN bus；BMU battery management unit is used to monitor voltage, the temperature of single battery, is minimum constituent unit.The voltage balancing method of above-mentioned battery management system is to allow the cell voltage in battery pack to reach unanimity by the method for equalization discharge.Electric voltage equalization constructing tactics of the present invention are simple, therefore failure rate is lower and easy to repair.
Description
Technical field
The present invention relates to a kind of management system and method more particularly to a kind of battery management system and methods.
Background technique
With popularizing for electric system application, energy storage device is more and more widely used.Due in energy storage device
Lithium battery it is excessively huge, it usually needs battery management system exercises supervision and optimizes, to safeguard its safety, durability and dynamic
Power.BMS (Battery Management System, battery management system) is the system being managed to battery, is usually had
There is the function of measuring cell voltage, prevents or avoid the unusual conditions such as battery over-discharge, overcharge, excess temperature to occur.In addition,
The function that weighs is a Xiang Gongneng critically important in battery management system, the consistency of battery pack can be safeguarded, to guarantee that battery pack makes
With service life and active volume.
Balance policy used by existing battery management system constructs complexity mostly, and failure rate is higher, is not easy to tie up
It repairs, be easy to cause battery maintenance management insufficient, so as to cause the too fast decaying of battery core, damage, retired.Therefore, practicability is developed more
Strong battery management system is very urgent.
Summary of the invention
In order to solve shortcoming present in above-mentioned technology, the present invention provides a kind of battery management system and methods.
In order to solve the above technical problems, the technical solution adopted by the present invention is that: a kind of battery management system, including three layers
Manage structure, respectively BAMS battery stack management system, MBMS management system for monitoring, BMU battery management unit；BAMS battery pile
Management system is for collecting junior's MBMS information, in real time to battery remaining power, health status into estimating, thus to entire energy storage
Battery carries out the progress that centralized management keeps its safe and reliable；BAMS battery stack management system passes through RS-485 bus or Modbus-
TCP/IP communication agreement is connected with PCS energy accumulation current converter；
Middle management level of the MBMS management system for monitoring as battery management system, for the charge and discharge to battery pack
Journey is managed, and carries out fault alarm and emergency protection processing, guarantees cell safety reliability service；MBMS monitoring management system
One end of system is connected by CAN bus with BAMS battery stack management system, and the other end is by CAN bus to multiple BMU batteries
Administrative unit is managed；
BMU battery management unit is used to monitor voltage, the temperature of single battery, and is supervised by CAN bus superior MBMS
Management system real-time delivery information above is surveyed, is also used to control the electric voltage equalization of single battery, is in battery management system
Minimum constituent unit；
One single battery is in parallel with an energy consumption resistance；By straight between the battery pack that multiple single batteries are formed
Stream bus is connected in series；PCS energy accumulation current converter is connected by conducting wire with DC bus；Between battery pack and PCS energy accumulation current converter
It is disposed with fuse, main contactor, for cutting off current loop when electric current, voltage, the temperature difference are more than threshold value；Fuse with
DC bus between main contactor issues a branch to side and is connected to MBMS management system for monitoring, for realizing MBMS
Detection of the management system for monitoring to electric current, voltage in battery pack；MBMS management system for monitoring is connect by fuse-isolator and master
Tentaculum is connected.
Further, BAMS battery stack management system is communicated by Ethernet with external control system.
Further, dry contact is provided between BAMS battery stack management system and PCS energy accumulation current converter.
Further, 10 batteries are managed as a mould group by a BMU battery management unit；18 mould groups
It is managed as cluster by MBMS management system for monitoring；The battery modules totally 6 cluster, corresponding 6 MBMS management system for monitoring,
6 MBMS management system for monitoring pass through CAN bus and are connected with BAMS battery stack management system.
Further, BAMS battery stack management system is integrated into switch enclosure or individually integrates.
Further, MBMS management system for monitoring is built in high-tension distribution box.
Further, BMU battery management unit is built in mould group.
A kind of voltage balancing method of battery management system, detailed process are as follows:
In whole group battery system, by the otherness of groups of monomer battery voltage of connecting, pass through BAMS battery heap manager
System carries out voltage acquisition, on the basis of " the upper limit threshold voltage " of prior preset charging voltage, any single battery
As long as reach " upper limit threshold voltage " at first in charging and detect with battery difference in adjacent sets, to monomer electricity in organizing
That highest battery is pressed, the energy consumption resistance by being connected in parallel on single battery carries out discharge current, and so on, until voltage
It is an equilibration period that minimum single battery, which reaches " upper limit threshold voltage ",；Battery pack is allowed by the method for equalization discharge
Interior cell voltage reaches unanimity.
Electric voltage equalization constructing tactics of the present invention are simple, therefore failure rate is lower and easy to repair；In addition, this
The system structure of invention and perfect in shape and function, stabilization reliable for operation have wide applicability.
Detailed description of the invention
Fig. 1 is system structure diagram of the invention.
Specific embodiment
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
A kind of battery management system shown in FIG. 1, including three-layer pipe reason structure, respectively BAMS battery stack management system,
MBMS management system for monitoring, BMU battery management unit；BAMS battery stack management system is for collecting junior's MBMS information, in real time
To battery remaining power, health status into estimating, thus to entire energy-storage battery carry out centralized management keep it safe and reliable into
Row；BAMS battery stack management system is the superlative degree of battery management system, for carrying out pool control to entire battery management system
System；BAMS battery stack management system is connected by RS-485 bus or Modbus-TCP/IP communication protocol with PCS energy accumulation current converter
It connects；
Middle management level of the MBMS management system for monitoring as battery management system, for the charge and discharge to battery pack
Journey is managed, and carries out fault alarm and emergency protection processing, guarantees cell safety reliability service；MBMS monitoring management system
One end of system is connected by CAN bus with BAMS battery stack management system, and the other end is by CAN bus to multiple BMU batteries
Administrative unit is managed；
BMU battery management unit is used to monitor voltage, the temperature of single battery, and is supervised by CAN bus superior MBMS
Management system real-time delivery information above is surveyed, is also used to control the electric voltage equalization of single battery, is in battery management system
Minimum constituent unit；
One single battery is in parallel with an energy consumption resistance；By straight between the battery pack that multiple single batteries are formed
Stream bus is connected in series；PCS energy accumulation current converter is connected by conducting wire with DC bus；Between battery pack and PCS energy accumulation current converter
It is disposed with fuse, main contactor, for cutting off current loop when electric current, voltage, the temperature difference are more than threshold value；Fuse with
DC bus between main contactor issues a branch to side and is connected to MBMS management system for monitoring, for realizing MBMS
Detection of the management system for monitoring to electric current, voltage in battery pack；MBMS management system for monitoring is connect by fuse-isolator and master
Tentaculum is connected.In battery system operation, if the analog quantitys such as the voltage of battery, electric current, temperature occur more than safeguard protection
When the case where thresholding, battery management system can be realized Fault Isolation on the spot in the present invention, and problem battery cluster is out of service, together
When report protection information.
BAMS battery stack management system is communicated by Ethernet with external control system.
Dry contact is provided between BAMS battery stack management system and PCS energy accumulation current converter.
10 batteries are managed as a mould group by a BMU battery management unit；18 mould groups as cluster by
MBMS management system for monitoring is managed；Totally 6 cluster, corresponding 6 MBMS management system for monitoring, 6 MBMS are supervised the battery modules
Survey management system passes through CAN bus and is connected with BAMS battery stack management system.
BAMS battery stack management system is integrated into switch enclosure or individually integrates.
MBMS management system for monitoring is built in high-tension distribution box.
BMU battery management unit is built in mould group.
A kind of voltage balancing method of battery management system, detailed process are as follows:
In whole group battery system, by the otherness of groups of monomer battery voltage of connecting, pass through BAMS battery heap manager
System carries out voltage acquisition, on the basis of " the upper limit threshold voltage " of prior preset charging voltage, any single battery
As long as reach " upper limit threshold voltage " at first in charging and detect with battery difference in adjacent sets, to monomer electricity in organizing
That highest battery is pressed, the energy consumption resistance by being connected in parallel on single battery carries out discharge current, and so on, until voltage
It is an equilibration period that minimum single battery, which reaches " upper limit threshold voltage ",；Battery pack is allowed by the method for equalization discharge
Interior cell voltage reaches unanimity.
The present invention has the function of battery system protection, heat management, analog measurement and operation warning function etc., system knot
Structure and perfect in shape and function, stabilization reliable for operation have extensive practical application.In addition, the present invention realizes required for electric voltage equalization
Circuit element number it is few and simple, compared with prior art, say the advantage with highly significant from angle easy to repair, and
And cost is lower, it is not easy to be out of order at runtime.
Above embodiment is not limitation of the present invention, and the present invention is also not limited to the example above, this technology neck
The variations, modifications, additions or substitutions that the technical staff in domain is made within the scope of technical solution of the present invention, also belong to this hair
Bright protection scope.
Claims (8)
1. a kind of battery management system, it is characterised in that: the battery management system includes three-layer pipe reason structure, respectively BAMS
Battery stack management system, MBMS management system for monitoring, BMU battery management unit；The BAMS battery stack management system is for receiving
Collect junior MBMS information, in real time to battery remaining power, health status into estimating, to carry out concentrate tube to entire energy-storage battery
Manage the progress for keeping its safe and reliable；The BAMS battery stack management system is communicated by RS-485 bus or Modbus-TCP/IP
Agreement is connected with PCS energy accumulation current converter；
Middle management level of the MBMS management system for monitoring as battery management system, for the charge and discharge to battery pack
Journey is managed, and carries out fault alarm and emergency protection processing, guarantees cell safety reliability service；The MBMS monitoring pipe
One end of reason system is connected by CAN bus with BAMS battery stack management system, and the other end is by CAN bus to multiple BMU
Battery management unit is managed；
The BMU battery management unit is used to monitor voltage, the temperature of single battery, and is supervised by CAN bus superior MBMS
Management system real-time delivery information above is surveyed, is also used to control the electric voltage equalization of single battery, is in battery management system
Minimum constituent unit；
One single battery is in parallel with an energy consumption resistance；Pass through direct current mother between the battery pack that multiple single batteries are formed
Line is connected in series；The PCS energy accumulation current converter is connected by conducting wire with DC bus；The battery pack and PCS energy accumulation current converter
Between be disposed with fuse, main contactor, for electric current, voltage, the temperature difference be more than threshold value when cut off current loop；It is described
DC bus between fuse and main contactor issues a branch to side and is connected to MBMS management system for monitoring, is used for
Realize detection of the MBMS management system for monitoring to electric current, voltage in battery pack；The MBMS management system for monitoring passes through Fuse Type
Isolator is connected with main contactor.
2. battery management system according to claim 1, it is characterised in that: the BAMS battery stack management system by with
Too net is communicated with external control system.
3. battery management system according to claim 2, it is characterised in that: the BAMS battery stack management system and PCS
Dry contact is provided between energy accumulation current converter.
4. battery management system according to claim 3, it is characterised in that: 10 batteries are as a mould group, by one
BMU battery management unit is managed；18 mould groups are managed as cluster by MBMS management system for monitoring；The battery mould
Totally 6 cluster, corresponding 6 MBMS management system for monitoring, 6 MBMS management system for monitoring pass through CAN bus and BAMS battery pile to group
Management system is connected.
5. battery management system according to claim 4, it is characterised in that: the BAMS battery stack management system is integrated into
It is in switch enclosure or individually integrated.
6. battery management system according to claim 5, it is characterised in that: the MBMS management system for monitoring is built in height
It is press-fitted in electronic box.
7. battery management system according to claim 6, it is characterised in that: the BMU battery management unit is built in mould
In group.
8. a kind of voltage balancing method of battery management system as claimed in claim 7, it is characterised in that: the tool of the method
Body process are as follows:
In whole group battery system, by the otherness of groups of monomer battery voltage of connecting, pass through BAMS battery stack management system
Voltage acquisition is carried out, on the basis of " the upper limit threshold voltage " of prior preset charging voltage, as long as any single battery
When reaching " upper limit threshold voltage " at first in charging and detect with battery difference in adjacent sets, then most to monomer voltage in organizing
That high battery, the energy consumption resistance by being connected in parallel on single battery carry out discharge current, and so on, until voltage is minimum
That single battery reach " upper limit threshold voltage " be an equilibration period；It is allowed in battery pack by the method for equalization discharge
Cell voltage reaches unanimity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910488951.0A CN110061551A (en) | 2019-06-06 | 2019-06-06 | A kind of battery management system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910488951.0A CN110061551A (en) | 2019-06-06 | 2019-06-06 | A kind of battery management system and method |
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| Publication Number | Publication Date |
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| CN110061551A true CN110061551A (en) | 2019-07-26 |
Family
ID=67325562
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110676526A (en) * | 2019-10-11 | 2020-01-10 | 联方云天科技(珠海)有限公司 | Modular battery system with multilayer management system and structure |
| CN110931895A (en) * | 2019-11-27 | 2020-03-27 | 深圳市科陆电子科技股份有限公司 | BMS battery balance maintenance method |
| CN110970914A (en) * | 2019-11-26 | 2020-04-07 | 力神动力电池系统有限公司 | Energy storage system with safety protection function |
| CN111355281A (en) * | 2020-03-26 | 2020-06-30 | 国网江西省电力有限公司电力科学研究院 | Vehicle-mounted movable energy storage system |
| CN111799854A (en) * | 2020-04-07 | 2020-10-20 | 中国铁道科学研究院集团有限公司金属及化学研究所 | Super energy storage battery management system suitable for flash welding machine or postweld heat treatment machine |
| CN111969680A (en) * | 2020-08-10 | 2020-11-20 | 傲普(上海)新能源有限公司 | Optimized BMS passive equalization method |
| CN113852158A (en) * | 2021-09-16 | 2021-12-28 | 零点创新科技有限公司 | Energy storage device of comprehensive energy supply station |
| CN114024349A (en) * | 2021-11-04 | 2022-02-08 | 许继集团有限公司 | Balanced protection control method for series-parallel combined battery cluster |
| CN114639898A (en) * | 2022-03-25 | 2022-06-17 | 南通国轩新能源科技有限公司 | Lithium ion battery energy storage cabin distributed intelligent temperature control system |
| CN114976320A (en) * | 2022-07-29 | 2022-08-30 | 广东采日能源科技有限公司 | Battery management method and battery management system |
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| CN110970914A (en) * | 2019-11-26 | 2020-04-07 | 力神动力电池系统有限公司 | Energy storage system with safety protection function |
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| CN111969680A (en) * | 2020-08-10 | 2020-11-20 | 傲普(上海)新能源有限公司 | Optimized BMS passive equalization method |
| CN113852158A (en) * | 2021-09-16 | 2021-12-28 | 零点创新科技有限公司 | Energy storage device of comprehensive energy supply station |
| CN114024349A (en) * | 2021-11-04 | 2022-02-08 | 许继集团有限公司 | Balanced protection control method for series-parallel combined battery cluster |
| CN114639898A (en) * | 2022-03-25 | 2022-06-17 | 南通国轩新能源科技有限公司 | Lithium ion battery energy storage cabin distributed intelligent temperature control system |
| CN114976320A (en) * | 2022-07-29 | 2022-08-30 | 广东采日能源科技有限公司 | Battery management method and battery management system |
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