CN207772912U - Battery management system - Google Patents
Battery management system Download PDFInfo
- Publication number
- CN207772912U CN207772912U CN201721366620.2U CN201721366620U CN207772912U CN 207772912 U CN207772912 U CN 207772912U CN 201721366620 U CN201721366620 U CN 201721366620U CN 207772912 U CN207772912 U CN 207772912U
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- China
- Prior art keywords
- module
- management system
- battery management
- battery
- accumulator group
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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
- 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
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a kind of battery management systems to manage an accumulator group, battery management system includes micro-control unit, communication module, energy supply control module and system control module, communication module includes serial data communication interface module, first bus module and the second bus module, serial data communication interface module is used to run the condition monitoring of battery management system, program is demarcated and parameter revision, a basic detecting unit and an engine hydraulic mechanical component for first bus module and an electricity consumption motor is electrically connected, second bus module gives the parameter real-time report of the battery of the accumulator group detected to a core electron control unit and a motor micro-control unit.The battery management system of the utility model has the second bus mould of the battery status of real-time report accumulator group, realizes the real time monitoring to accumulator group and control.
Description
【Technical field】
The utility model is in relation to a kind of battery management system, espespecially a kind of battery management system with real-time monitoring and control
System.
【Background technology】
As the accumulator of storing up electricity tool, i.e., the secondary cell described in usual people, either usage history is most long, answers
With widest lead-acid battery, or the high performance lithium ion battery with more development space that the nearly more than ten years just grow up,
What is be most afraid of in use is exactly overcharge and overdischarge.Once overcharging, overdischarge, battery will damage, and capacity reduces, and the service life subtracts
It is few.Under serious situation, it also occur that explosion and catching fire.Especially lithium ion battery, the deflagration phenomenon usually occurred,
It is essentially all to be come caused by over-charging of battery, overdischarge.Therefore, accumulator is in use, that I guess batteries, all
Battery management is carried out, battery management system will be configured.This is to ensure battery safe to use, performance and service life
Essential measure.
Battery is in groups in use, be easier there is a phenomenon where overcharging, overdischarge, root is all battery with two side terminals
Come caused by error.Single battery in accumulator group uses characteristic due to the manufacture of battery and the difference of use condition
Between having differences property, the i.e. voltage of battery, capacity, internal resistance and self-discharge rate, in different temperatures, different charge-discharge magnification, no
Under same state-of-charge, the different use conditions using course etc., it is different.And existing between single battery these are poor
It is different, if not obtaining due control during charge and discharge, it will further increased, and then percentage of batteries is caused to be sent out
It is raw overcharge, overdischarge phenomenon, cause the capacity of accumulator group and the drastically decline in service life, finally cause the generation of accident.This is
The problem that accumulator occurs in use.For this purpose, in recent ten years, many experts and scholars both domestic and external, the system of vast accumulator
The person of making and user, Efforts To Develop aim to solve the problem that the research of the brought harm of battery consistency error, have developed various
The battery management system (BMS) of various kinds.Up to now, the domestic and international battery management system (BMS) seen in the prior art, one
As all have the function of high-low pressure, high/low temperature and cross the multinomial GPF (General Protection False such as flow short-circuit and lay in the measurement function of electricity, there are many
Battery management system (BMS) the also equalization function with so-called battery.It is few to make us but in terms of actual using effect
Satisfied battery management system (BMS).Some battery management systems (BMS) be in terms of handling electronic technology there are the problem of,
Besides there are problems for theory and battery management strategy to battery management system (BMS).Electric automobiles are just increasingly at present
Fast development, it is comparable under the development of battery still there is bottleneck, be not durable, short life, high use cost the problems such as need
It solves, and is not careful the accident of also occurring that, or even Fire explosion occurs.
Therefore, in the prior art above-mentioned to solve it is necessory to be improved to traditional battery management system (BMS)
Defect.
【Utility model content】
The main purpose of the utility model is to provide one kind in accordance with scientific idea and practical and effective battery management system
(BMS) is united to solve defect in the prior art.
To achieve the goals above, the utility model battery management system adopts the following technical scheme that：A kind of battery management
To manage an accumulator group, the battery management system includes micro-control unit, is electrically connected the micro-control unit system
Communication module, the system that is electrically connected the energy supply control module of the micro-control unit and is electrically connected the micro-control unit
Control module, the communication module include the serial data communication interface module that the micro-control unit is electrically connected,
One bus module and the second bus module, the serial data communication interface module are used to run the state prison of battery management system
One basic detecting unit (BMU) of control, program calibration and parameter revision, first bus module and an electricity consumption motor and a hair
Motivation Hydromechanical Unit (HMU) is electrically connected, and second bus module is high-speed bus, by the accumulator group detected
Remaining capacity, voltage, electric current, the temperature parameter real-time report of battery are micro- to a core electron control unit (VCU) and a motor
Control unit (MCU).
Further, the communication module further includes third bus module, and it is vehicle-mounted that the third bus module is electrically connected one
Monitoring system, the third bus module are high-speed bus, and the details of accumulator group are sent to vehicle-mounted monitoring system, complete
It is shown and the functions such as fault alarm at the data of the state of accumulator group, data is provided for the maintenance and replacement of accumulator group.
Further, second bus module and the third bus module are all made of the mode and micro-control unit of isolation
It is attached.
Further, the battery management system connects a motor, and the motor is real-time by first bus module
The real-time status of the battery of accumulator group is solved, and according to circumstances adjusts charge mode, the charge mode includes constant-current charge mould
Formula and constant voltage constant current charging pattern.
Further, the constant current charging mode is the charging voltage for adjusting motor, adjusts the series-connected cell of accumulator group
Voltage, and then the electric current in charging process is made to remain unchanged.
Further, the constant voltage constant current charging pattern is to keep voltage constant, and current control exists in charging process
In a certain range.
Further, the charge mode further includes trickle charge pattern, and the trickle charge pattern is that holding one is opposite
One recovery of chemical substance of small charging current to the inside of accumulator group for the charging current of constant voltage constant current charging mode
Then process uses constant voltage constant current charging pattern to be carried out for accumulator group again after the terminal voltage of battery increases to a certain numerical value
Charging.
Further, the battery management system estimates that mode, the SOC estimation modes are measured plus turned using AH using SOC
The modified method of point estimates SOC, depends on the current monitoring function of battery management system, accurately draws SOC-OCV
Curve is simultaneously modified SOC estimation results.
Further, the battery management system calculates SOC and SOH using Kalman filtering method, in conjunction in accumulator group
The load voltage of single battery and the integrated value of electric current carry out dynamic estimation to SOC.
Further, the energy supply control module includes being electrically connected the micro-control unit to provide power source conversion function
Power conversion module, the indicating lamp module to provide instruction function and the hardware watchdog module to monitoring and reset, institute
It states power conversion module and is directly electrically connected an out-put supply module, an externally fed power supply carries out electricity by power conversion module
Source is converted, and the out-put supply module exports power supply to basic detecting unit (BMU) and engine hydraulic mechanical component (HMU)
With driving motor.
Compared with prior art, the battery management system of the utility model has the second bus module, second bus
Module is high-speed bus, by the remaining capacity of the battery of the accumulator group detected, voltage, electric current, temperature parameter real-time report
To a core electron control unit and a motor micro-control unit, the real time monitoring to accumulator group and control are realized.
【Description of the drawings】
Fig. 1 is the system architecture diagram of the utility model battery management system.
【Specific implementation mode】
Referring to FIG. 1, the utility model battery management system 100 is managing the accumulator group of carload, the accumulator
Group is applicable to electric vehicle (pure electric vehicle/hybrid power/fast charge quick change), energy-accumulating power station (solar power station/wind light mutual complementing
Power generation) and communication base station (USP stand-by power supplies/Switching Power Supply) etc..The battery management system 100 include micro-control unit 10,
It is electrically connected the communication module 20 of the micro-control unit 10, is electrically connected the energy supply control module of the micro-control unit 10
30, it is electrically connected the system control module 40 of the micro-control unit 10 and is electrically connected the input mould of the micro-control unit 10
Block 50.
The communication module 20 includes the serial data communication interface module that the micro-control unit 10 is electrically connected
21 (RS-232 modules), the first bus module 22 (CNA modules), the second bus module 23 (CNA1 modules) and third bus module
24 (CNA2 modules).Wherein, the serial data communication interface module 21 is used to run the state prison of battery management system 100
Control, program calibration and parameter revision etc..First bus module 22 (CNA modules) is making motor (not shown) pass through it
Electrolytic cell manages the real-time status of the battery of system 100, the basic detecting of first bus module 22 (CNA modules) and motor
Unit (BMU) and engine hydraulic mechanical component (HMU) 25 are electrically connected, and realize the basic detecting of micro-control unit 10 and motor
The information exchange of unit (BMU) and engine hydraulic mechanical component (HMU) 25.The basic detecting unit (BMU) of the motor has
There are voltage monitoring, current monitoring, temperature monitoring, insulating monitoring, the functions such as relay status monitoring and SOC estimations.Described second
Bus module 23 (CNA1 modules) is electrically connected the core electron control unit (VCU) and motor micro-control unit (MCU) of motor,
Second bus module 23 (CNA1 modules) is high-speed bus 26, can be by the remaining capacity, voltage, electricity of the battery detected
The parameters such as stream, temperature real-time report is to core electron control unit (VCU) and motor micro-control unit (MCU) 26, in order to two
Person more reasonably takes control strategy.The third bus module 24 (CNA2 modules) is electrically connected vehicle-mounted monitoring system 27,
The third bus module 24 (CNA2 modules) is high-speed bus, can the details of accumulator group be sent to vehicle-mounted monitoring
System 27, the data for completing the state of accumulator group are shown and the functions such as fault alarm, are carried for the maintenance and replacement of accumulator group
For data.Second bus module 23 (CNA1 modules) and the third bus module 24 (CNA2 modules) are all made of isolation
Mode is attached with micro-control unit 10.
The energy supply control module 30 include be electrically connected the micro-control unit 10 providing power source conversion function
Power conversion module 31, the indicating lamp module 32 to provide instruction function and the hardware watchdog module to monitoring and reset
33.The power conversion module 31 is directly electrically connected an out-put supply module 34, and an externally fed power supply (not indicating) passes through
The power supply of power conversion module 31 is converted, and the out-put supply module 34 exports power supply to basic detecting unit (BMU) and hair
Motivation Hydromechanical Unit (HMU) 25 is with driving motor.
The system control module 40 include be electrically connected the micro-control unit 10 storing micro-control unit 10
The memory module 41 of internal data, system clock module 42 and unlatching/closing of relay can be driven and then control electric power storage
The relay driving module 43 of pond group operation.
The input module 50 includes analog input module 51, the digital input module 52 on 4 tunnels and the number on 4 tunnels on 2 tunnels
Output module 53, the analog input module 51, digital input module 52 and digital output module 53 to complete analog quantity and
The input and output of digital quantity.
The utility model battery management system 100 has relatively reasonable charging scheme.Motor passes through the first bus module
22 (CNA modules) understand the real-time status of the battery of accumulator group in real time, and dynamic adjusts charging strategy, and then realize that safety is filled
Electricity.The charging scheme of the utility model battery management system is divided into two stages, respectively constant current charging mode and constant pressure and flow
Charge mode.When accumulator group starts to charge up, using constant current charging mode.So-called constant current charging mode, as adjustment are external
The charging voltage of motor, adjusts the voltage of the series-connected cell of accumulator group, and then the electric current in charging process is made no longer to become
It changes.Under constant current charging mode state, because the ability to accept of battery can slowly become smaller because of the continuation of charging process, Zhi Daochong
When electric block end, the main use of charging current becomes electrolysis water, it may appear that many bubbles, influence battery use state and
Service life, therefore take constant voltage constant current charging pattern.So-called constant voltage constant current charging pattern is to prevent because when constant-voltage charge is initial
Charging current is excessive, leads to temperature abruptly increase and brings grievous injury to accumulator group, and then needing at this time will be electric in charging process
Flow control is in a certain range.Also a kind of boost charge pattern is trickle charge pattern, and so-called trickle charge pattern as exists
Its internal one recovery process of chemical substance, this when is given to need with to a certain degree after to accumulator group discharge process
Relatively small electric current is gone up to charge the battery, after the terminal voltage of battery increases to a certain numerical value, then uses constant pressure and constant again
Current charge pattern uses high current to charge for accumulator group.Under trickle charge mode state, electric current is constant and numerical value is smaller,
As battery status restores, it is necessary to so that the voltage of rectifier is increased with battery status, therefore trickle charge pattern and perseverance
Current charge pattern is more similar.
The utility model battery management system 100 uses SOC estimations mode to provide support for full-vehicle control, is that vehicle judges
Whether battery can be with the foundation of charge or discharge.The SOC estimations estimate SOC using AH meterings plus the modified method of inflection point
It calculates, depends on the current monitoring function of battery management system 100, accurately draw SOC-OCV curves, and then ensure SOC estimations
Accuracy.For the battery of the accumulator group of hybrid vehicle be typically in it is shallow fill the shallow state put, the utility model electricity
Pond manages system 100 and Kalman filtering algorithm Lay is then used to ensure the error of SOC estimations in a certain range.The SOC estimations
Assume responsibility for the evaluation work of battery management system core --- include the SOC of accumulator group, highest, minimum temperature are maximum, minimum
Charge-discharge electric power, maximum, minimum charging and discharging currents, the analysis of the data such as maximum, minimum module voltage calculate.The estimation of SOC exists
On the basis of Ah counting method, SOC estimation results are modified using the OCV-SOC curves of battery.
The utility model battery management system 100 carries out energy management using management of charging and discharging scheme to vehicle, ensures to store
Battery pack provides maximum energy limit value under conditions of safe handling for vehicle.On pure electric automobile, management of charging and discharging side
Case can also accelerate the energy supply of the battery of accumulator group.On hybrid vehicle, management of charging and discharging can ensure that vehicle energy
Optimal utilization.
The utility model battery management system 100 uses the online equalization methods of low resistance, solves temperature and rises excessively high, control difficulty
Big problem can play battery certain proportionality action in the case where the internal resistance of cell being effectively treated and polarizing voltage influences.This
Utility model uses battery pack heat management pattern to provide good running environment for the operation of accumulator group simultaneously.According to different
The battery temperature characteristic of accumulator group is realized to an air-cooler or is added by the reliable monitoring temperature of battery management system 100
The control of thermal resistance, and then the temperature of the battery of accumulator group is made to be in optimum state.The utility model battery management system 100
Also there is troubleshooting pattern, can accurately carry out breakdown judge and find the unsafe condition in battery operation in time, ensure
The safety of battery operation.Troubleshooting pattern can determine whether fault type, and be directed to respectively 100 faults itself of battery management system and
Battery operation status fault carries out alarm respectively.
The utility model the utility model battery management system 100 is included in power management designing technique, and acquisition module exists
The stand-by power consumption of nA ranks can be possessed under sleep pattern.SOC and SOH is calculated using Kalman filtering method on software, in conjunction with list
The load voltage of body battery and the integrated value of electric current carry out dynamic estimation to SOC, overcome conventional open circuit voltage method and electric current product
Point-score is for a long time due to the prodigious problem of SOC estimation errors caused by battery chemical characteristics variation and cumulative errors.
Claims (10)
1. a kind of battery management system, to manage an accumulator group, the battery management system includes micro-control unit, electrically
The communication module of the micro-control unit is connected, the energy supply control module of the micro-control unit is electrically connected and is electrically connected institute
State the system control module of micro-control unit, it is characterised in that：The communication module includes that the microcontroller is electrically connected
Serial data communication interface module, the first bus module and the second bus module of unit, the serial data communication interface mould
Block is used to run the condition monitoring of battery management system, program calibration and parameter revision, first bus module and an electricity consumption
One basic detecting unit of motor and an engine hydraulic mechanical component are electrically connected, and second bus module is that high speed is total
Line gives the remaining capacity of the battery of the accumulator group detected, voltage, electric current, temperature parameter real-time report to a core electron
Control unit and a motor micro-control unit.
2. battery management system as described in claim 1, it is characterised in that：The communication module further includes third bus mould
Block, the third bus module are electrically connected a vehicle-mounted monitoring system, and the third bus module is high-speed bus, by accumulator
The details of group are sent to vehicle-mounted monitoring system, and the data for completing the state of accumulator group are shown and fault alarm function, are
The maintenance and replacement of accumulator group provide data.
3. battery management system as claimed in claim 2, it is characterised in that：Second bus module and the third bus
Module is all made of the mode of isolation and micro-control unit is attached.
4. battery management system as claimed in claim 3, it is characterised in that：The battery management system connects a motor, institute
State the real-time status that motor understands the battery of accumulator group by first bus module in real time, and according to circumstances adjustment charging
Pattern, the charge mode include constant current charging mode and constant voltage constant current charging pattern.
5. battery management system as claimed in claim 4, it is characterised in that：The constant current charging mode is to adjust filling for motor
Piezoelectric voltage, adjusts the voltage of the series-connected cell of accumulator group, and then the electric current in charging process is made to remain unchanged.
6. battery management system as claimed in claim 5, it is characterised in that：The constant voltage constant current charging pattern is to keep voltage
It is constant, and in charging process by current control in a certain range.
7. battery management system as claimed in claim 6, it is characterised in that：The charge mode further includes trickle charge mould
Formula, the trickle charge pattern are that charging current small for keeping a charging current with respect to constant voltage constant current charging mode is given
Then one recovery process of chemical substance of the inside of accumulator group is adopted again after the terminal voltage of battery increases to a certain numerical value
It is that accumulator group charges with constant voltage constant current charging pattern.
8. battery management system as claimed in claim 7, it is characterised in that：The battery management system uses the estimation sides SOC
Formula, the SOC estimation modes estimate SOC using AH meterings plus the modified method of inflection point, depend on battery management system
Current monitoring function, accurately draw and SOC-OCV curves and SOC estimation results be modified.
9. battery management system as claimed in claim 8, it is characterised in that：The battery management system uses Kalman filtering
Method calculates SOC and SOH, in conjunction with the load voltage of the single battery in accumulator group and the integrated value of electric current to SOC into Mobile state
Estimation.
10. battery management system as claimed in claim 9, it is characterised in that：The energy supply control module includes being electrically connected
The micro-control unit to provide the power conversion module of power source conversion function, providing the indicating lamp module of instruction function
And the hardware watchdog module to monitoring and reset, the power conversion module are directly electrically connected an out-put supply module, one
Externally fed power supply carries out power supply conversion by power conversion module, and the out-put supply module exports power supply to basic detecting
Unit and engine hydraulic mechanical component are with driving motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721366620.2U CN207772912U (en) | 2017-10-20 | 2017-10-20 | Battery management system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721366620.2U CN207772912U (en) | 2017-10-20 | 2017-10-20 | Battery management system |
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| Publication Number | Publication Date |
|---|---|
| CN207772912U true CN207772912U (en) | 2018-08-28 |
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ID=63219589
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721366620.2U Expired - Fee Related CN207772912U (en) | 2017-10-20 | 2017-10-20 | Battery management system |
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| CN (1) | CN207772912U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110745012A (en) * | 2019-10-30 | 2020-02-04 | 杭州东小西科技有限公司 | Novel hybrid battery topology system |
-
2017
- 2017-10-20 CN CN201721366620.2U patent/CN207772912U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110745012A (en) * | 2019-10-30 | 2020-02-04 | 杭州东小西科技有限公司 | Novel hybrid battery topology system |
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Granted publication date: 20180828 Termination date: 20191020 |