CN207753126U - A kind of lithium battery management system - Google Patents
A kind of lithium battery management system Download PDFInfo
- Publication number
- CN207753126U CN207753126U CN201820093227.9U CN201820093227U CN207753126U CN 207753126 U CN207753126 U CN 207753126U CN 201820093227 U CN201820093227 U CN 201820093227U CN 207753126 U CN207753126 U CN 207753126U
- Authority
- CN
- China
- Prior art keywords
- module
- circuit
- lithium battery
- management system
- battery management
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- 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
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The utility model discloses a kind of lithium battery management systems, it includes a central processing module and one or more local measurement modules, each local measurement module be respectively connected with one by lithium battery group at battery pack, and each local measurement module is connect by RS485 buses with the central processing module；The local measurement module includes main control module, charging module, balance module, data acquisition module and the electricity computing module being connect respectively with main control module.The advantages that lithium battery management system provided by the utility model uses two-step evolution structure, and using modularization, distributed design, has reasonable design, and scalability is strong, and man-machine interaction is good.
Description
Technical field
The utility model is related to a kind of lithium battery management systems, more particularly to one kind being applied to electric vehicle solar recharging phase
Close the lithium battery management system of equipment.
Background technology
With the development of society, lithium battery be widely used in the every field of production and living it is general, the application of lithium battery with
Management becomes a kind of very crucial technology in various equipment developments.Since the beginning of this century, lithium battery production is obtained with research
Very big breakthrough, because of many good advantages that it possesses, such as discharge voltage is stablized, and self-discharge rate is low, operating temperature range
Width, memory-less effect, storage life is long, light-weight, it is small the features such as, at leisure instead of traditional nickel-cadmium storage battery
And lead-acid accumulator, it is more and more wider in the application field of social production and life, become the power battery of current mainstream.Due to
In lithium battery interior, chemical reaction is extremely complex, therefore people are while constantly improve battery self performance, also to electricity
The administrative skill in pond and using constantly being studied, to increase the service life of battery, improves battery efficiency, maximally plays
Battery performance.For this purpose, battery management system (Battery Management System, BMS) comes into being, battery management system
Operating status of the system for dynamically monitoring battery unit and battery pack, can accurately calculate the remaining capacity of battery, to electricity
Charge and discharge protecting is implemented in pond, it is promoted to be in optimum Working, reduces operating cost, improves service life.Currently, being applied to
It is relatively low, system various parameters to there is scalability for the lithium battery management system of electric vehicle solar recharging relevant device
Measure the defects of inaccurate, man-machine interaction is poor.
Utility model content
In order to overcome the deficiencies of the prior art and there are the problem of, the utility model provides a kind of lithium battery management system, should
The advantages that lithium battery management system has reasonable design, and scalability is strong, and systematic parameter accuracy is high.
The utility model is achieved through the following technical solutions：A kind of lithium battery management system a comprising centre
Manage module and one or more local measurement module, each local measurement module be respectively connected with one by lithium battery group at battery pack
And each local measurement module is connect by RS485 buses with the central processing module；
The local measurement module includes main control module, the charging module that is connect respectively with main control module, balance module,
Data acquisition module and electricity computing module；
The local measurement module is used to carry out DATA REASONING to battery pack, and the central processing module is total by RS485
Line communication mode is managed and controls to local measurement module, to realize monitoring and management to battery pack.
Preferably, the data acquisition module includes the voltage acquisition module being connect respectively with the main control module, electricity
Flow acquisition module and temperature collecting module.
Preferably, the voltage acquisition module includes the voltage collection circuit and photoelectric isolating circuit of interconnection, institute
It states voltage collection circuit and the lithium battery respectively gone here and there in battery pack is first subjected to voltage data acquisition respectively, then each battery pack is carried out
Voltage data acquire, then as photoelectric isolating circuit will acquire obtained by voltage data be transferred on the main control module, finally
Central processing module obtains the voltage parameter of battery pack by RS485 buses from main control module.
Preferably, the temperature information of battery pack is transmitted to the master by the temperature collecting module by photoelectric isolating circuit
Control module.
Preferably, the current acquisition module includes charge/discharge control circuit, charging control circuit, current sample and amplification
Circuit and over-current detection and protection circuit, the charge/discharge control circuit, charging control circuit one end with the battery
The positive output end B+ of group, the charging control circuit pass sequentially through charging control switch, discharge control switch and the electric current
It sampling and amplifying circuit connection, the over-current detection and protection circuit and the charge/discharge control circuit and current sample and puts
Big circuit is all connected with, and the charge/discharge control circuit is also connect with the discharge control switch, the negative output terminal B- of the battery pack
Be all connected with the over-current detection and protection circuit, current sample and amplifying circuit, the over-current detection and protection circuit also with
Common node J1 connections between discharge control switch and charging control switch.
Further, the current acquisition module is including further including having regulator circuit, the regulator circuit and control of discharge electricity
Common node J2 connections between road and charging control circuit；The over-current detection and protection circuit also by diode with it is described
Common node J1 connections.
Preferably, the master control IC in the over-current detection and protection circuit is the IC S- of Seiko Semiconductor Co., Ltd
8211DAJ-M5T1x；The charging control switch is D.C. contactor with discharge control switch.
Preferably, the equilibrium model master control IC in the block is the S-8241ADTMC- of Seiko Semiconductor Co., Ltd
GDTT2x。
Lithium battery management system provided by the utility model, with two-step evolution structure, respectively central processing module
With local measurement module, central processing module and local measurement module realize communication connection by the form of RS485 buses, adopt
With modularization, distributed design, reasonable design, scalability is strong, and man-machine interaction is good；In addition, voltage acquisition module exists
When measuring voltage parameter, first measured as unit of going here and there, then measured as unit of battery pack, finally by Phototube Coupling
Voltage parameter is transmitted to main control module by circuit, in addition, current acquisition module is all made of with balance module measures essence with good
The electronic component of degree, so that the utility model has many advantages, such as that high certainty of measurement, transmission data are safe and reliable.
Description of the drawings
Fig. 1 is the schematic block circuit diagram of lithium battery management system described in the utility model.
Fig. 2 is the schematic block circuit diagram of local measurement module described in the utility model embodiment.
Fig. 3 is the circuit diagram of voltage sample module and temperature sampling module described in the utility model embodiment.
Fig. 4 is the circuit diagram of balance module described in the utility model embodiment.
Fig. 5 is the schematic block circuit diagram of current acquisition module described in the utility model embodiment.
Specific implementation mode
For the ease of the understanding of those skilled in the art, below in conjunction with the drawings and specific embodiments to the utility model make into
One step is described in detail.
As shown in attached drawing 1-2, a kind of lithium battery management system a comprising central processing module and one or more are originally
Ground measurement module, each local measurement module be respectively connected with one by lithium battery group at battery pack and each local measurement module pass through
RS485 buses are connect with the central processing module；
The local measurement module includes main control module, the charging module that is connect respectively with main control module, balance module,
Data acquisition module and electricity computing module；
The local measurement module is used to carry out DATA REASONING to battery pack, and the central processing module is total by RS485
Line communication mode is managed and controls to local measurement module, to realize monitoring and management to battery pack.
In the present embodiment, the data acquisition module includes the voltage acquisition mould being connect respectively with the main control module
Block, current acquisition module and temperature collecting module.
In the utility model embodiment, the central processing module is as host computer, and the battery information of battery pack is (such as electricity
The information such as pond group total voltage, single string of batteries voltage, charging and discharging currents, temperature and electric current), can be displayed in central processing module
On the display of setting, and the control instruction of management is detected also by center to battery pack for controlling local measurement module
Processing module is sent out.The main control module can be the master control mould being made of MCU.The central processing module, master control mould
Block, charging module and electricity computing module etc. are the achievable function module of the prior art, and this will not be detailed here.
The data acquisition module and balance module are further described below：
The voltage acquisition module includes the voltage collection circuit and photoelectric isolating circuit of interconnection, and the voltage is adopted
The lithium battery respectively gone here and there in battery pack is first carried out voltage data acquisition by collector respectively, then carries out voltage data to each battery pack
Acquisition, then as photoelectric isolating circuit will acquire obtained by voltage data be transferred on the main control module, last central processing
Module obtains the voltage parameter of battery pack by RS485 buses from main control module.In addition, the temperature collecting module passes through photoelectricity
The temperature information of battery pack is transmitted to the main control module by isolation circuit, last central processing module by RS485 buses from
Main control module obtains the voltage parameter of battery pack.
The monocell terminal voltage of single string of batteries in battery pack is to implement battery dump energy calculating, the choosing of charging and discharging state
It selects and a Main Basiss of operating status assessment has sought to one so to the precondition that battery pack group is monitored
A rational monocell terminal voltage measurement method.However since battery in battery pack number is more, total voltage is relatively high, and measures
Required precision it is high, thus the difficulty for implementing voltage measurement is bigger, this is also that battery management system in the prior art measures
Not high one of the reason of precision.To solve this technical problem, this battery management system is to go here and there the distributed knot of module more
Structure designs, and the operation principle of voltage monitoring scheme is：First, as unit of single string of batteries, carrying out voltage measurement, (string number is number
Between 1 to 16 string), voltage measurement then is carried out to each battery pack again.
The physical circuit of voltage acquisition module and temperature collecting module in the present embodiment is as shown in Fig. 3.The present embodiment
In, the function of temperature collecting module is that (component in Fig. 3 marked as KT is temperature by 70 DEG C of (normally closed) temperature switches
Degree switch) realize.The temperature switch of temperature acquisition is used for there are one being all connected in each battery pack.
As preferred embodiment, the equilibrium model master control IC in the block is the S- of Seiko Semiconductor Co., Ltd
The physical circuit figure of 8241ADTMC-GDTT2x, balance module are as shown in Fig. 4.Implementing the lithium ion battery to being connected in series with
When group charging, because of the difference of each unit chemical characteristic in battery pack, if some element cells are fully charged, but other lists
But there are no chargings to finish for first battery, and the generation of this battery unit that will be fully charged overcharges electrical phenomena, this will be to lithium
Ion battery influences very big.In contrast, if those lithium ion batteries cannot long-term full charge, and internal resistance can be increased, reduced
The capacity of lithium ion battery leads to being easily damaged for lithium ion battery.And solve some of lithium ion battery in charging process
Undercharge and a most efficient method for overcharging problem, exactly implement to allow equalizing charge of battery all batteries
To reach balanced consistent state.It, can be in charge and discharge process according to each list detected using the balance module in the present embodiment
The voltage value of body battery, carries out to needing balanced single battery dynamic equalization electric discharge, with to the economize on electricity cell voltage be managed with
Control.
As preferred embodiment, the current acquisition module is as shown in Fig. 5 comprising has charge/discharge control circuit, fills
Electric control circuit, current sample and amplifying circuit and over-current detection and protection circuit, the charge/discharge control circuit, charging control
With the positive output end B+ of the battery pack, the charging control circuit passes sequentially through charge control and opens for one end of circuit processed
Pass, discharge control switch are connect with the current sample and amplifying circuit, and the over-current detection and protection circuit are put with described
Electric control circuit and current sample and amplifying circuit are all connected with, and the charge/discharge control circuit also connects with the discharge control switch
It connects, negative output terminal B- and the over-current detection and protection circuit, the current sample and amplifying circuit of the battery pack are all connected with, institute
It states over-current detection and common node J1 of the circuit also between discharge control switch and charging control switch is protected to connect.
Preferably, it further includes having regulator circuit that the current acquisition module, which includes, the regulator circuit and control of discharge electricity
Common node J2 connections between road and charging control circuit, the regulator circuit are used to provide to over-current detection and protection circuit steady
Fixed operating voltage；In addition, the over-current detection and protection circuit are also connect by diode with the common node J1.
In the present embodiment, the master control IC in the over-current detection and protection circuit is mistake described in Seiko Semiconductor Co., Ltd
Master control IC in stream detection and protection circuit is the IC S-8211DAJ-M5T1x of Seiko Semiconductor Co., Ltd.In addition, in electricity
In stream sampling and amplifying circuit, is constituted using attached current divider outside FL-2 and realize current sample, it is real using TI company's Ts LC27L7CDR
Existing amplifier.
By elements structures such as attached current dividers outside TLC27L7CDR, Seiko IC S-8211DAJ-M5T1x, FL-2 in the present embodiment
At current acquisition module, possess good measurement accuracy, be not inserted into loss, the linearity is outstanding, current overload ability ratio
Preferably, at 25 degree Celsius hereinafter, its measurement accuracy can reach ± 0.2%.
Compared with prior art, lithium battery management system provided by the utility model, with two-step evolution structure, respectively
For central processing module and local measurement module, central processing module and local measurement module are real by the form of RS485 buses
It now communicates to connect, uses modularization, distributed design, reasonable design, scalability is strong, and man-machine interaction is good；In addition,
Voltage acquisition module is first measured as unit of going here and there, then measured as unit of battery pack, most when measuring voltage parameter
Voltage parameter is transmitted to by main control module by photoelectric isolating circuit afterwards, in addition, current acquisition module is all made of with balance module
Electronic component with good measurement accuracy, so that the utility model has high certainty of measurement, transmission data safe and reliable
The advantages that.
Above-described embodiment is the preferable realization method of the utility model, is not the restriction to the utility model, not
Under the premise of the utility model design for being detached from the utility model, any obvious replacement is in the protection model of the utility model
Within enclosing.
Claims (10)
1. a kind of lithium battery management system, it is characterised in that：Including a central processing module and one or more local measurements
Module, each local measurement module be respectively connected with one by lithium battery group at battery pack and each local measurement module pass through RS485
Bus is connect with the central processing module；
The local measurement module includes main control module, the charging module that is connect respectively with main control module, balance module, data
Acquisition module and electricity computing module；
The local measurement module is used to carry out DATA REASONING to battery pack, and the central processing module is logical by RS485 buses
Letter mode is managed and controls to local measurement module, to realize monitoring and management to battery pack.
2. lithium battery management system according to claim 1, it is characterised in that：The data acquisition module includes difference
Voltage acquisition module, current acquisition module and the temperature collecting module being connect with the main control module.
3. lithium battery management system according to claim 2, it is characterised in that：The voltage acquisition module includes mutual
The voltage collection circuit and photoelectric isolating circuit of connection, the voltage collection circuit first distinguish the lithium battery respectively gone here and there in battery pack
Voltage data acquisition is carried out, voltage data acquisition then is carried out to each battery pack, then will be obtained by acquisition as photoelectric isolating circuit
Voltage data be transferred on the main control module, last central processing module by RS485 buses from main control module obtain electricity
The voltage parameter of pond group.
4. lithium battery management system according to claim 2, it is characterised in that：The temperature collecting module by photoelectricity every
The temperature information of battery pack is transmitted to the main control module from circuit.
5. lithium battery management system according to claim 2, it is characterised in that：The current acquisition module includes electric discharge
Control circuit, charging control circuit, current sample and amplifying circuit and over-current detection and protection circuit, the control of discharge
Circuit, charging control circuit one end with the positive output end B+ of the battery pack, the charging control circuit passes sequentially through
Charging control switch, discharge control switch are connect with the current sample and amplifying circuit, the over-current detection and protection electricity
Road is all connected with the charge/discharge control circuit and current sample and amplifying circuit, the charge/discharge control circuit also with the electric discharge
Control switch connection, negative output terminal B- and the over-current detection and protection circuit, the current sample and amplification electricity of the battery pack
Road is all connected with, the common node J1 of the over-current detection and protection circuit also between discharge control switch and charging control switch
Connection.
6. lithium battery management system according to claim 5, it is characterised in that：The current acquisition module is including further including
There is regulator circuit, the common node J2 connections between the regulator circuit and charge/discharge control circuit and charging control circuit.
7. lithium battery management system according to claim 6, it is characterised in that：The over-current detection and protection circuit are also logical
Diode is crossed to connect with the common node J1.
8. the lithium battery management system according to any one of claim 5~7, it is characterised in that：The over-current detection
And the IC S-8211DAJ-M5T1x that the master control IC in protection circuit is Seiko Semiconductor Co., Ltd.
9. lithium battery management system according to claim 8, it is characterised in that：The charging control switch and control of discharge
Switch is D.C. contactor.
10. lithium battery management system according to claim 9, it is characterised in that：The equilibrium model master control IC's in the block
For the S-8241ADTMC-GDTT2x of Seiko Semiconductor Co., Ltd.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820093227.9U CN207753126U (en) | 2018-01-19 | 2018-01-19 | A kind of lithium battery management system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820093227.9U CN207753126U (en) | 2018-01-19 | 2018-01-19 | A kind of lithium battery management system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207753126U true CN207753126U (en) | 2018-08-21 |
Family
ID=63153505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820093227.9U Expired - Fee Related CN207753126U (en) | 2018-01-19 | 2018-01-19 | A kind of lithium battery management system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207753126U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108054450A (en) * | 2018-01-19 | 2018-05-18 | 东莞市海拓伟电子科技有限公司 | A kind of lithium battery management system |
| CN109660000A (en) * | 2019-01-08 | 2019-04-19 | 东莞博力威电池有限公司 | A kind of more battery control methods, system and device |
| CN110045665A (en) * | 2019-05-27 | 2019-07-23 | 上海格兆电器有限公司 | A kind of control circuit and its working method for D.C. contactor |
| CN110676923A (en) * | 2019-10-26 | 2020-01-10 | 深圳市阿尓法智慧科技有限公司 | Control circuit for equalizing charge by utilizing solar cell panel |
-
2018
- 2018-01-19 CN CN201820093227.9U patent/CN207753126U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108054450A (en) * | 2018-01-19 | 2018-05-18 | 东莞市海拓伟电子科技有限公司 | A kind of lithium battery management system |
| CN109660000A (en) * | 2019-01-08 | 2019-04-19 | 东莞博力威电池有限公司 | A kind of more battery control methods, system and device |
| CN110045665A (en) * | 2019-05-27 | 2019-07-23 | 上海格兆电器有限公司 | A kind of control circuit and its working method for D.C. contactor |
| CN110045665B (en) * | 2019-05-27 | 2024-03-19 | 上海格兆电器有限公司 | Control circuit for direct current contactor and working method thereof |
| CN110676923A (en) * | 2019-10-26 | 2020-01-10 | 深圳市阿尓法智慧科技有限公司 | Control circuit for equalizing charge by utilizing solar cell panel |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207753126U (en) | A kind of lithium battery management system | |
| CN103633693B (en) | A kind of battery balanced management system | |
| CN109586373A (en) | A kind of method for charging batteries and device | |
| Garche et al. | Battery management systems (BMS) for increasing battery life time | |
| CN104052087A (en) | Intelligent lithium ion battery management system for electric vehicle and balance control method thereof | |
| CN102645638B (en) | SOC (Stress Optical Coefficient) estimating method of lithium battery pack | |
| CN205407331U (en) | Group battery intelligent management system suitable for new forms of energy car | |
| CN108508365A (en) | A kind of lithium ion battery self discharge screening technique | |
| CN102082312B (en) | High-capacity energy storage device | |
| CN204575824U (en) | A kind of batteries of electric automobile parameter acquisition devices | |
| CN107618397A (en) | Battery management system | |
| WO2012100540A1 (en) | Lithium ion battery management system | |
| CN104505892A (en) | Intelligent control system of charging and discharging battery pack | |
| CN106786909B (en) | A kind of equalising control device in groups and control method of energy storage liquid metal cell | |
| CN106655301A (en) | Power management system and method suitable for electric fork-lift truck | |
| CN205621815U (en) | Plumbic acid power battery management system based on PLC | |
| CN108054450A (en) | A kind of lithium battery management system | |
| CN201985550U (en) | Series lithium ion power battery pack with automatic charge-discharge balance | |
| CN204925232U (en) | Accurate detection circuitry of lithium cell group monomer voltage | |
| CN204068383U (en) | A kind of battery management system of mobile energy-accumulating power station | |
| Li et al. | The battery management system construction method study for the power lithium-ion battery pack | |
| CN205029355U (en) | Battery management device based on voltage, electric current and temperature | |
| CN211744085U (en) | Protection circuit and power supply | |
| CN204497784U (en) | Liquid flow energy storage battery charge-discharge control system | |
| CN116418054A (en) | Novel multichannel intelligent lithium ion battery management module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180821 Termination date: 20200119 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |