CN208767836U - A kind of battery management system - Google Patents
A kind of battery management system Download PDFInfo
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- CN208767836U CN208767836U CN201821740482.4U CN201821740482U CN208767836U CN 208767836 U CN208767836 U CN 208767836U CN 201821740482 U CN201821740482 U CN 201821740482U CN 208767836 U CN208767836 U CN 208767836U
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- battery
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- battery pack
- microprocessor
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- 238000004891 communication Methods 0.000 claims abstract description 34
- 230000001681 protective effect Effects 0.000 claims description 6
- 238000004146 energy storage Methods 0.000 abstract description 14
- 238000012544 monitoring process Methods 0.000 abstract description 10
- 230000005611 electricity Effects 0.000 abstract description 5
- 230000003862 health status Effects 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000000178 monomer Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 2
- 238000013139 quantization Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000005955 Ferric phosphate Substances 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229940032958 ferric phosphate Drugs 0.000 description 1
- 235000003642 hunger Nutrition 0.000 description 1
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 description 1
- 229910000399 iron(III) phosphate Inorganic materials 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000037351 starvation Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to a kind of family energy storage battery management systems; system energy real-time monitoring energy-storage battery voltage, temperature and the electric current; estimate battery charge state, health status and charge/discharge electricity amount; alarm and protection are issued to battery exception and the system failure; balanced single battery energy; with current transformer and monitoring background communication, it is ensured that the safe and stable operation of family energy-storage system.Utility model has the advantages that: the utility model is integrated with battery parameter monitoring, battery power status calculating, alarm and protection, battery pack balancing and communication function; it is full-featured; structure is simple, at low cost, meets family energy-storage system high reliablity, requirement at low cost.
Description
Technical field
The utility model relates to a kind of battery management system, especially a kind of family energy storage battery management system.
Background technique
The development of domestic and international family distributed photovoltaic system has pushed the progress of family energy storage technology, at present family energy storage system
For system mainly using lithium ion battery as energy-storage travelling wave tube, Yao Peibei battery management system guarantees the safe and reliable operation of whole system.
Family is also in the starting stage with energy storage battery management system technology at present, and technology is immature.
Common automobile-used or energy-accumulating power station lithium ion battery management system is mostly second level or three-level structure, and system is multiple
It is miscellaneous, it is at high cost.The battery protecting plate that small-sized lithium electricity scooter is equipped with has a single function, poor reliability.Above-mentioned battery management system is not
Meet the high reliability and high security requirement of family energy storage.
Summary of the invention
The utility model will solve the disadvantage that the above-mentioned prior art, provide a kind of family energy storage battery management system, this is
System energy real-time monitoring energy-storage battery voltage, temperature and electric current, estimation battery charge state, health status and charge/discharge electricity amount are right
Battery is abnormal and the system failure issues alarm and protection, balanced single battery energy, with current transformer and monitoring background communication, it is ensured that
The safe and stable operation of family energy-storage system.
The utility model solves the technical solution of its technical problem use: this battery management system, including battery pack,
Be characterized in: data acquisition module one end is connect with battery pack, and the output end of data acquisition module is connect with microprocessor；Equilibrium model
The input terminal of block is connect with microprocessor, and the other end is connect with battery pack；Power module one end is connect with battery pack group end, another
End is connect with microprocessor, data acquisition module, balance module, communication module respectively；Display module is connect with microprocessor；It protects
Shield module one end is connect with battery pack major loop, and the other end is connect with microprocessor；Communication module is connect with microprocessor.
The data acquisition module includes A/D chip, and A/D chip is separately connected current collection circuit, voltage collection circuit, temperature
Acquisition Circuit is spent, current collection circuit is connect by current sensor with battery pack, and temperature collection circuit passes through temperature sensor
It is connect with battery pack, voltage collection circuit is directly connect with battery pack, and A/D chip power supply interface is connect with power module, and data pass
Defeated interface is connect with microprocessor.Voltage acquisition module is used to acquire the voltage of single battery in battery pack.Pass through microcontroller
Data-interface selects the single battery to be acquired, and exports the analog quantity for monomer battery voltage, due to it is internal oneself through to signal
Level conversion is done, so output can directly carry out AD quantization encoding.Temperature collecting module is to batteries every in battery pack
Temperature be acquired.Current acquisition module is used to acquire loop current during battery pack charge or discharge.
Preferably, microprocessor is also connected with SD card module, for system upgrade in microprocessor.
Microprocessor (MCU) reads any monomer battery voltage for gating, and reads current acquisition module output
The signal of signal and temperature collecting module output, collected signal is all the voltage signal of analog quantity.Microprocessor first can
These collected signals are AD converted.Microprocessor calculates in real time according to collected voltage, electric current, temperature data
SOC, SOH, the charge/discharge electricity amount of battery, for assessing battery pack power state.Microprocessor controls balance module, in battery pack
Consistency starts when exceeding threshold value, improves battery performance in time.Microprocessor module also controls display module, and with communication
Module connection, realizes and carries out data exchange with external management system.It is finally connect with protective module, control battery set charge/discharge returns
Road on-off, real-time guard battery pack, whether monitoring battery pack is in short-circuit protection state, and the reset system that can prescribe a time limit.
Balance module is connect with battery pack, and for every batteries parallel connection, equalization channel, balanced way are power resistor all the way
In conjunction with the energy dissipation mode of MOS switch pipe, structure is simple, and avoiding the existing accidentally equilibrium of active equalization mode causes battery to damage
Bad risk；Balance module control terminal is connect with microprocessor, when battery cell consistency exceeds threshold value, micro process starting
Balance module discharges to the higher battery of energy.
Power module is DC/DC type power conversion circuit, and effect is that assembled battery total voltage is reduced to system need of work
Voltage, and for system work reliable and stable output voltage is provided.Power module by battery voltage be transformed to multichannel 5V and
After 3.3V, exported respectively to MCU, acquisition module, communication module and SD card module.
Protective module occurs overcharging in single battery, over-discharge, overcurrent, short circuit, it is too high or too low for temperature situations such as, according to
The control signal that MCU is issued, the charging and discharging circuit on-off for controlling battery pack realize protection.The switch for controlling major loop uses big function
The D.C. contactor of rate, contact completely cut off air sealing, long service life.MCU real-time monitoring short-circuit protection state, if in short
Road guard mode can reset system by reset button.
Communication Module Design three kinds of telecommunication circuits, respectively CAN, RS485 and wireless communication, to adapt to external management system
The different communication requirement of system.The inner parameter of management system can be configured by these communication interfaces, and can be real
When with PCS, other communications, inform the state of current battery.Wherein, CAN is used for and other management systems or PC
Machine communication, is used for transmission data or programming program；RS485 transmits control instruction and status data for communicating with PCS；Wirelessly
Communication is for exchanging data with server communication.Communication module passes through communication interface board and external connection.
Display module is mainly made of LED light and divider resistance, and the LED light including 4 different colours is respectively used to
Indicate the system failure, charged state, discharge condition and standby mode.When alarming and protecting occur in system, red LED lamp is bright；
When system is in charged state, green rechargeable LED lamp is bright；When system is in discharge condition, green electric discharge LED light is bright；At system
When standby mode, blue LED lamp is bright.
Utility model has the advantages that: the utility model is integrated with battery parameter monitoring, battery power status calculates, report
Alert and protection, battery pack balancing and communication function, full-featured, structure is simple, at low cost, and it is reliable to meet family energy-storage system
Property high, requirement at low cost.
Detailed description of the invention
Fig. 1 is circuit system structure chart；
Fig. 2 is data acquisition module circuit structure diagram.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing:
This battery management system, including battery pack, it is characterized in that: data acquisition module one end is connect with battery pack, number
It is connect according to the output end of acquisition module with microprocessor；The input terminal of balance module is connect with microprocessor, the other end and battery
Group connection；Power module one end is connect with battery pack group end, the other end respectively with microprocessor, data acquisition module, equilibrium model
Block, communication module connection；Display module is connect with microprocessor；Protective module one end is connect with battery pack major loop, the other end
It is connect with microprocessor；Communication module is connect with microprocessor.
The data acquisition module includes A/D chip, and A/D chip is separately connected current collection circuit, voltage collection circuit, temperature
Acquisition Circuit is spent, current collection circuit is connect by current sensor with battery pack, and temperature collection circuit passes through temperature sensor
It is connect with battery pack, voltage collection circuit is directly connect with battery pack, and A/D chip power supply interface is connect with power module, and data pass
Defeated interface is connect with microprocessor.AD conversion chip is the sixteen bit ADS1110 chip of Texas Instrument.
Voltage acquisition module is used to acquire the voltage of single battery in battery pack, selects to adopt by I2C data-interface
The single battery of collection exports the analog quantity for monomer battery voltage, since level conversion has been done to signal in inside, so defeated
AD quantization encoding can be directly carried out out.Temperature collecting module is acquired to the temperature of batteries every in battery pack, temperature
Sensing uses the thermistor (NTC) of negative temperature coefficient.Current acquisition module is used to acquire battery pack charge or discharge process
Middle loop current, is acquired using current divider, and precision is high, low offset, and output area is 0~75mV analog quantity, so by amplification
After be AD converted.
Microprocessor is also connected with SD card module, for system upgrade in microprocessor.
Microprocessor (MCU) be Freescale MC9S12XET256 chip, input power 5V, by I2C interface with
Voltage acquisition module connection reads any monomer battery voltage for gating, and reads the signal of current acquisition module output
With the signal of temperature collecting module output, collected signal is all the voltage signal of analog quantity.Microprocessor first can be to this
A little collected signals are AD converted.Microprocessor calculates battery according to collected voltage, electric current, temperature data in real time
SOC, SOH, charge/discharge electricity amount, for assessing battery pack power state.Microprocessor controls balance module, consistent in battery pack
Property exceed threshold value when start, improve battery performance in time.Microprocessor module also controls display module, and and communication module
Connection is realized and carries out data exchange with external management system.It is finally connect with protective module, control battery set charge/discharge circuit is logical
Disconnected, whether real-time guard battery pack, monitoring battery pack is in short-circuit protection state, and the reset system that can prescribe a time limit.
Balance module is connect with battery pack, and for every batteries parallel connection, equalization channel, balanced way are power resistor all the way
In conjunction with the energy dissipation mode of MOS switch pipe, structure is simple, and avoiding the existing accidentally equilibrium of active equalization mode causes battery to damage
Bad risk；Balance module control terminal is connect with microprocessor, when battery cell consistency exceeds threshold value, micro process starting
Balance module discharges to the higher battery of energy.
Power module is DC/DC type power conversion circuit, and effect is that assembled battery total voltage is reduced to system need of work
Voltage, such as 5V, and for system work reliable and stable output voltage is provided.The power supply of system is provided by whole group battery, according to
The ferric phosphate lithium cells of 16 strings calculate, and total voltage highest can achieve 59.2V or so.Power module is by 59.2V voltage transformation
After multichannel 5V and 3.3V, exported respectively to MCU, data acquisition module, communication module and SD card module.
Protective module occurs overcharging in single battery, over-discharge, situations such as crossing flow short-circuit, is too high or too low for temperature, according to MCU
The control signal of sending, the charging and discharging circuit on-off for controlling battery pack realize protection.The switch of major loop is controlled using high-power
D.C. contactor, electric shock starvation sealing, long service life.MCU real-time monitoring short-circuit protection state, if in short circuit
Guard mode can reset system by reset button.
Communication Module Design three kinds of telecommunication circuits, respectively CAN, RS485 and wireless communication, to adapt to external management system
The different communication requirement of system.The inner parameter of management system can be configured by these communication interfaces, and can be real
When with PCS, other communications, inform the state of current battery.Wherein, CAN is used for and other management systems or PC
Machine communication, is used for transmission data or programming program；RS485 transmits control instruction and status data for communicating with PCS；Wirelessly
Communication is for exchanging data with server communication.Communication module passes through communication interface board and external connection.
Display module is mainly made of LED light and divider resistance, and the LED light including 4 different colours is respectively used to
Indicate the system failure, charged state, discharge condition and standby mode.When alarming and protecting occur in system, red LED lamp is bright；
When system is in charged state, green rechargeable LED lamp is bright；When system is in discharge condition, green electric discharge LED light is bright；At system
When standby mode, blue LED lamp is bright.
In addition to the implementation, the utility model can also have other embodiments.It is all to use equivalent replacement or equivalent change
The technical solution to be formed is changed, the protection scope of the requires of the utility model is all fallen within.
Claims (3)
1. a kind of battery management system, including battery pack, it is characterized in that: data acquisition module one end is connect with battery pack, data
The output end of acquisition module is connect with microprocessor；The input terminal of balance module is connect with microprocessor, the other end and battery pack
Connection；Power module one end is connect with battery pack group end, the other end respectively with microprocessor, data acquisition module, balance module,
Communication module connection；Display module is connect with microprocessor；Protective module one end is connect with battery pack major loop, the other end with it is micro-
Processor connection；Communication module is connect with microprocessor.
2. battery management system according to claim 1, it is characterized in that: the data acquisition module includes A/D chip, AD
Chip is separately connected current collection circuit, voltage collection circuit, temperature collection circuit, and current collection circuit passes through current sensor
It is connect with battery pack, temperature collection circuit is connect by temperature sensor with battery pack, and voltage collection circuit is directly and battery pack
Connection, A/D chip are connect with power module, microprocessor respectively.
3. battery management system according to claim 1 or 2, it is characterized in that: microprocessor is also connected with SD card module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821740482.4U CN208767836U (en) | 2018-10-26 | 2018-10-26 | A kind of battery management system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821740482.4U CN208767836U (en) | 2018-10-26 | 2018-10-26 | A kind of battery management system |
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| Publication Number | Publication Date |
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| CN208767836U true CN208767836U (en) | 2019-04-19 |
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| CN201821740482.4U Active CN208767836U (en) | 2018-10-26 | 2018-10-26 | A kind of battery management system |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110137582A (en) * | 2019-04-26 | 2019-08-16 | 江西赣锋电池科技有限公司 | A kind of battery cluster balance on-line method and system in battery energy storage system |
| CN112937368A (en) * | 2019-12-11 | 2021-06-11 | 广州汽车集团股份有限公司 | Driving balancing method and device for vehicle battery and vehicle |
| CN113872306A (en) * | 2021-11-08 | 2021-12-31 | 东华理工大学 | Online health condition evaluation method for photovoltaic energy storage battery |
-
2018
- 2018-10-26 CN CN201821740482.4U patent/CN208767836U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110137582A (en) * | 2019-04-26 | 2019-08-16 | 江西赣锋电池科技有限公司 | A kind of battery cluster balance on-line method and system in battery energy storage system |
| CN110137582B (en) * | 2019-04-26 | 2020-09-22 | 江西赣锋锂电科技有限公司 | Online balancing method for battery clusters in battery energy storage system |
| CN112937368A (en) * | 2019-12-11 | 2021-06-11 | 广州汽车集团股份有限公司 | Driving balancing method and device for vehicle battery and vehicle |
| CN113872306A (en) * | 2021-11-08 | 2021-12-31 | 东华理工大学 | Online health condition evaluation method for photovoltaic energy storage battery |
| CN113872306B (en) * | 2021-11-08 | 2023-04-18 | 东华理工大学 | Online health condition evaluation method for photovoltaic energy storage battery |
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Address after: Building 5, 5th Floor, No. 6 Xiyuan 9th Road, Sandun Town, Xihu District, Hangzhou City, Zhejiang Province, 310030 Patentee after: Hangzhou Kegong Electronic Technology Co.,Ltd. Address before: Building 5, 3rd Floor, No. 6 Xiyuan Fifth Road, Xihu Science and Technology Park, Xihu District, Hangzhou City, Zhejiang Province, 310030 Patentee before: HANGZHOU KEGONG ELECTRONIC TECHNOLOGY CO.,LTD. |