CN104158266B - A kind of vehicle mounted battery management system - Google Patents
A kind of vehicle mounted battery management system Download PDFInfo
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- CN104158266B CN104158266B CN201410437785.9A CN201410437785A CN104158266B CN 104158266 B CN104158266 B CN 104158266B CN 201410437785 A CN201410437785 A CN 201410437785A CN 104158266 B CN104158266 B CN 104158266B
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- 238000013500 data storage Methods 0.000 claims abstract description 17
- 238000012545 processing Methods 0.000 claims abstract description 12
- 238000007599 discharging Methods 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims description 16
- 230000008569 process Effects 0.000 claims description 12
- 238000005259 measurement Methods 0.000 claims 1
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Abstract
The present invention provides a kind of vehicle mounted battery management system, is applied to electric-vehicle-mounted technical field of battery management, and this vehicle mounted battery management system includes: gather the voltage acquisition unit of battery core magnitude of voltage；Gather the current acquisition unit of charging and discharging currents value；Gather the temperature collecting cell of battery core temperature value；The data storage cell of storage initial data；Initial data is processed the data processing unit obtaining secondary data；Secondary data is sent the CAN communication unit to entire car controller；For search WIFI access point in real time, and send the WIFI communication unit of initial data to WIFI access point.The present invention can effectively solve the problem that the various status informations of Vehicular accumulator cell during network failure are lost, and has the advantages such as fast, the high and low cost of quality of data transmission bauds.
Description
Technical field
The present invention relates to technical field of battery management, in particular it relates to a kind of vehicle mounted battery management system.
Background technology
Vehicle-mounted BMS (Battery Management System, battery management system) is for managing and safeguard the car of electric motor car
Carry accumulator battery so that it is steady operation.Accumulator battery in electric motor car, is the most all to be concatenated by a lot of cells
Be operated, after set of cells comes into operation, the actual capacity of each cell always from equilibrium state progressively to unbalanced
State development, a vital task of vehicle-mounted BMS carries out equilibrium treatment to all cells exactly.
Vehicle-mounted BMS monitors the voltage of cell, electric current, temperature for the moment, carries out detection of electrical leakage, heat management, battery
Balanced management, warning reminding, calculating residual capacity and discharge power, report SOH (State of Health, battery health shape
Condition) and SOC (State of Charge, charged state), voltage x current and temperature according to battery control peak power output
To obtain maximum range, and control charger and carry out the charging of optimum current, and with entire car controller, car-mounted display
System, charger, external service platforms etc. carry out real-time communication.
Existing vehicle-mounted BMS is usually initial datas such as gathering the voltage of cell, electric current, temperature, then according to necessarily
Data processing policy initial data carried out process form secondary data, then by CAN, secondary data is sent to the most whole
Vehicle controller, or it is sent to external service platforms by 3G communication, then, entire car controller is by analyzing secondary
Data are optimized driving and prevent overdischarge etc. from processing, and external service platforms then analyzes Vehicular accumulator cell by secondary data
The duty of group and performance variation tendency.But 3G radio communication exists, and cost is high, transmission speed is slow, be unsuitable for transmitting number greatly
The shortcomings such as the data according to amount, limit the communication function of vehicle-mounted BMS and external service platforms, additionally, due to vehicle-mounted BMS fortune
Row process is that secondary data is transferred to external service platforms, external service platforms can not get the voltage of cell, electric current,
The initial datas such as temperature, are unfavorable for subsequent data analysis, and once 3G network break down, and secondary data sends and do not goes out,
Various initial datas the most do not preserve, various status informations (voltage of cell, electric current, the temperature etc. of Vehicular accumulator cell
Initial data) will lose, the various status informations of Vehicular accumulator cell when causing external service platforms cannot grasp network failure,
Cannot accurately analyze duty and the performance variation tendency of Vehicular accumulator cell group.
Summary of the invention
The main purpose of the embodiment of the present invention is to provide a kind of vehicle mounted battery management system, to solve network event in prior art
The problem that during barrier, the various status informations (initial data such as the voltage of cell, electric current, temperature) of Vehicular accumulator cell are lost.
To achieve these goals, the embodiment of the present invention provides a kind of vehicle mounted battery management system, including:
Voltage acquisition unit, for measuring and gather the battery core magnitude of voltage of each cell in vehicle-mounted accumulator battery；
Current acquisition unit, for measuring and gather the charging and discharging currents value in each cell charge and discharge process described；
Temperature collecting cell, for measuring and gather the battery core temperature value in each cell charge and discharge process described；
Data storage cell, is used for storing initial data, and described initial data includes the battery core voltage of each cell described
Value, charging and discharging currents value and battery core temperature value；
Data processing unit, for processing described initial data according to default data processing policy, obtains two numbers
According to；
CAN communication unit, for sending described secondary data to entire car controller by CAN；
WIFI communication unit, for search WIFI access point in real time, after searching WIFI access point and being successfully established connection,
The initial data of storage in described data storage cell is sent to described WIFI access point.
By means of technique scheme, the present invention increases data storage cell and WIFI communication unit in vehicle mounted battery management system
Unit, in order to store the initial datas such as the battery core magnitude of voltage of cell, charging and discharging currents value and battery core temperature value, and passes through WIFI
Initial data is sent by technology, and compared to prior art, the present invention can effectively solve Vehicular accumulator cell during network failure
The problem lost of various status informations (initial data such as the voltage of cell, electric current, temperature), additionally, due to adopt
By WiFi technology, the present invention can quickly send the initial data of big data quantity, has the high and low cost of data transmission quality
Etc. advantage.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, institute in embodiment being described below
The accompanying drawing used is needed to be briefly described, it should be apparent that, the accompanying drawing in describing below is only some enforcements of the present invention
Example, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to attached according to these
Figure obtains other accompanying drawing.
Fig. 1 is the vehicle mounted battery management system structured flowchart that the present invention provides.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clearly and completely
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on this
Embodiment in invention, the every other reality that those of ordinary skill in the art are obtained under not making creative work premise
Execute example, broadly fall into the scope of protection of the invention.
The present invention provides a kind of vehicle mounted battery management system, as it is shown in figure 1, this system includes:
Voltage acquisition unit 11, for measuring and gather the battery core magnitude of voltage of each cell in vehicle-mounted accumulator battery.
Current acquisition unit 12, for measuring and gather the charging and discharging currents value in each cell charge and discharge process.
Temperature collecting cell 13, for measuring and gather the battery core temperature value in each cell charge and discharge process.
Data storage cell 14, is used for storing initial data, and initial data includes the battery core magnitude of voltage of each cell, fills
Discharge current value and battery core temperature value.
Data processing unit 15, for processing described initial data according to default data processing policy, obtains secondary
Data.
CAN communication unit 16, for sending described secondary data to entire car controller by CAN.
WIFI communication unit 17, for search WIFI access point in real time, when searching WIFI access point and being successfully established connection
After, send the initial data of storage in data storage cell 14 to WIFI access point.
Compared to prior art, the present invention increases data storage cell and WIFI communication unit in vehicle mounted battery management system,
In order to store the initial datas such as the battery core magnitude of voltage of cell, charging and discharging currents value and battery core temperature value, and pass through WIFI
Initial data is sent by technology, can effectively solve various status informations (the monomer electricity of Vehicular accumulator cell during network failure
The initial datas such as the voltage in pond, electric current, temperature) problem lost, additionally, due to have employed WiFi technology, energy of the present invention
Enough initial datas quickly sending big data quantity, have the advantages such as the high and low cost of data transmission quality.
In the present invention, set up the process being connected and transmitting data between WIFI communication unit with WIFI access point and lead to based on WIFI
Letter technology, does not repeats them here.When being embodied as the present invention, the connection password of WIFI access point can be pre-set, and should
Password is saved in WIFI communication unit, and when password authentification success, WIFI communication unit is successfully established with WIFI access point
Connect and transmit initial data.
In a kind of preferred embodiment, it is successfully established the WIFI access point being connected with WIFI communication unit and is arranged at external service
In platform, in this embodiment, external service platforms receives not only by WIFI access point and (includes network in any case
During fault) the various status informations of Vehicular accumulator cell, and also the initial data received is more abundant compared to secondary data complete
Face, such that it is able to more accurately analyze duty and the performance variation tendency of Vehicular accumulator cell group.
In a kind of preferred embodiment, the vehicle mounted battery management system that the present invention provides can also include: 3G communication unit,
For described secondary data being sent to external service platforms in real time by 3G network.That is, the present invention in on-vehicle battery management is
While system this locality preserves initial data, it is also possible to as in the prior art, will process, through data, two obtained by 3G network
Secondary data sends to external service platforms, and in this case, external service platforms is possible not only to obtain in real time and processes list through data
The secondary data of the information reduction that unit processes and obtains, it is also possible to obtain when WIFI communication unit is successfully connected with WIFI access point
Breath of winning the confidence more enriches comprehensive initial data.
In a kind of preferred embodiment, it is successfully established the WIFI access point being connected with WIFI communication unit and can also be arranged at and fill
In motor so that charger obtain comprehensive and abundant Vehicular accumulator cell group status information (voltage of cell, electric current,
The initial datas such as temperature), and based on the capacity situation of each cell in these information analysis Vehicular accumulator cell groups, and then
Formulate rational charging strategy.
Concrete, in the present invention, data storage cell can be with certain time length (such as 12 hours, 24 hours, 48 hours
Deng) it is that unit stores initial data, it is also possible in units of electric motor car one-shot to the process closed, store initial data.
It should be noted that when implementing the present invention, can go to select suitable storage cell to store as data according to practical situation
The unit of unit storage initial data, to reach rationally to store the purpose of initial data, this is not especially limited by the present invention,
The specific embodiment being only the present invention the most described above, the protection domain being not intended to limit the present invention, all in the present invention
Spirit and principle within, use other any storage cell should be included within the scope of the present invention.
The data volume of the information such as battery core magnitude of voltage, charging and discharging currents value and the battery core temperature value in view of cell is general relatively
Greatly, bigger memory space need to be taken, for reasonable employment memory space, it is to avoid the feelings of larger capacity storage device must be configured
Condition, the present invention may be embodied as data storage cell and deletes the form of the most stored initial data according to preset rules.
In a kind of preferred embodiment, data storage cell periodically deletes the form of initial data, or once WIFI communication
Initial data is sent to WIFI access point by unit, and data storage cell i.e. deletes the form of this initial data.Need explanation
, when implementing the present invention, setting data memory element can be gone to delete the rule of initial data according to practical situation, with
Reaching the purpose of reasonable employment memory space, the rule that data storage cell is deleted initial data by the present invention the most specifically limits
Fixed, the specific embodiment being only the present invention the most described above, the protection domain being not intended to limit the present invention, all at this
Within the spirit of invention and principle, other any rule is selected to should be included within the scope of the present invention.Such as, originally
Invention can also be embodied as: when memory space takes, and deletes the former of each storage cell successively according to the sequencing of time
Beginning data.
Particular embodiments described above, has been carried out the most specifically the purpose of the present invention, technical scheme and beneficial effect
Bright, be it should be understood that the specific embodiment that the foregoing is only the present invention, the protection being not intended to limit the present invention
Scope, all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. done, should be included in
Within protection scope of the present invention.
Those skilled in the art are it will also be appreciated that the various illustrative components, blocks (illustrative that list of the embodiment of the present invention
Logical block), unit, and step can pass through electronic hardware, computer software, or both combinations realize.For
Clearly show that the replaceability (interchangeability) of hardware and software, above-mentioned various illustrative components (illustrative
Components), unit and step the most universally describe their function.Such function is by hardware or soft
Part realizes depending on specifically applying the design requirement with whole system.Those skilled in the art can be specific for every kind
Application, it is possible to use the function described in the realization of various methods, but this realization is understood not to protect beyond the embodiment of the present invention
The scope protected.
Various illustrative logical block described in the embodiment of the present invention, or unit, or device can pass through general procedure
Device, digital signal processor, special IC (ASIC), field programmable gate array or other programmable logic device,
Discrete gate or transistor logic, discrete hardware components, or the design of any of the above described combination realize or operate described function.
General processor can be microprocessor, alternatively, this general processor can also be any traditional processor, controller,
Microcontroller or state machine.Processor can also realize by calculating the combination of device, such as digital signal processor and micro-
Processor, multi-microprocessor, one or more microprocessors one Digital Signal Processor Core of associating, or other class any
As configure and realize.
Method or the step of algorithm described in the embodiment of the present invention can be directly embedded into hardware, the software mould of processor execution
Block or the combination of both.Software module can be stored in RAM memory, flash memory, ROM memory, EPROM
Other arbitrary shape in memorizer, eeprom memory, depositor, hard disk, moveable magnetic disc, CD-ROM or this area
In the storage medium of formula.Exemplarily, storage medium can be connected with processor, so that processor can be from storage medium
Middle reading information, it is possible to deposit write information to storage medium.Alternatively, storage medium can also be integrated in processor.Place
Reason device and storage medium can be arranged in ASIC, and ASIC can be arranged in user terminal.Alternatively, processor and depositing
Storage medium can also be arranged in the different parts in user terminal.
In one or more exemplary designs, the above-mentioned functions described by the embodiment of the present invention can hardware, software,
The combination in any of firmware or this three realizes.If realized in software, these functions can store the matchmaker with computer-readable
On Jie, or it is transmitted on the medium of computer-readable with one or more instructions or code form.Computer readable medium includes computer
Store medium and be easy to so that allowing computer program transfer to the telecommunication media in other place from a place.Storage medium can be
Any general or special computer can be with the useable medium of access.Such as, such computer readable media can include but not
It is limited to RAM, ROM, EEPROM, CD-ROM or other optical disc storage, disk storage or other magnetic storage device,
Other any may be used for carrying or storage with instruction or data structure and other can by general or special computer or general or
Special processor reads the medium of the program code of form.Additionally, any connection can be properly termed computer-readable
Medium, such as, if software is by coaxial cable, a light from a web-site, server or other remote resource
Fiber-optic cable, twisted-pair feeder, Digital Subscriber Line (DSL) or with the wireless way for transmittings such as the most infrared, wireless and microwave also by
It is included in defined computer readable medium.Described video disc (disk) and disk (disc) include Zip disk, radium-shine
Dish, CD, DVD, floppy disk and Blu-ray Disc, disk is generally with magnetic duplication data, and video disc generally carries out light with laser
Learn and replicate data.Combinations of the above can also be included in computer readable medium.
Claims (5)
1. a vehicle mounted battery management system, it is characterised in that including:
Voltage acquisition unit, for measuring and gather the battery core magnitude of voltage of each cell in vehicle-mounted accumulator battery；
Current acquisition unit, for measuring and gather the charging and discharging currents value in each cell charge and discharge process described；
Temperature collecting cell, for measuring and gather the battery core temperature value in each cell charge and discharge process described；
Data storage cell, is used for storing initial data, and described initial data includes described measurement each list collected
The battery core magnitude of voltage of body battery, charging and discharging currents value and battery core temperature value；
Data processing unit, for processing described initial data according to default data processing policy, obtains two numbers
According to；
CAN communication unit, for sending described secondary data to entire car controller by CAN；
WIFI communication unit, for search WIFI access point in real time, after searching WIFI access point and being successfully established connection,
The initial data of storage in described data storage cell is sent to described WIFI access point；
Wherein, described data storage cell deletes the most stored initial data with setting cycle；Or, when described WIFI communicates
Initial data is sent to described WIFI access point by unit, and described data storage cell is deleted this and had been sent to described WIFI
The initial data of access point.
Vehicle mounted battery management system the most according to claim 1, it is characterised in that with the success of described WIFI communication unit
Set up the WIFI access point connected to be arranged in external service platforms.
Vehicle mounted battery management system the most according to claim 2, it is characterised in that described vehicle mounted battery management system is also
Including: 3G communication unit, for described secondary data being sent to external service platforms in real time by 3G network.
Vehicle mounted battery management system the most according to claim 1, it is characterised in that with the success of described WIFI communication unit
Set up the WIFI access point connected to be arranged in charger.
Vehicle mounted battery management system the most according to claim 1, it is characterised in that described data storage cell is to set
Time span is that unit stores initial data.
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| CN201410437785.9A CN104158266B (en) | 2014-08-29 | 2014-08-29 | A kind of vehicle mounted battery management system |
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| CN201410437785.9A CN104158266B (en) | 2014-08-29 | 2014-08-29 | A kind of vehicle mounted battery management system |
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| CN104158266B true CN104158266B (en) | 2016-09-28 |
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| CN104835301A (en) * | 2015-04-22 | 2015-08-12 | 北京柏惠维康科技有限公司 | Wireless data transmission device for medical equipment |
| CN107368939B (en) * | 2017-06-06 | 2021-07-06 | 蔚来(安徽)控股有限公司 | Method and device for determining service capability of charging and switching facility unit group |
| JP7173127B2 (en) * | 2018-03-27 | 2022-11-16 | 住友電気工業株式会社 | BATTERY MONITORING METHOD, BATTERY MONITORING DEVICE, AND BATTERY MONITORING SYSTEM |
| CN108683202B (en) * | 2018-04-12 | 2022-05-06 | 浙江正泰电器股份有限公司 | Energy storage system |
| CN113612284A (en) * | 2021-08-10 | 2021-11-05 | 重庆峘能电动车科技有限公司 | Battery management system |
| CN114051182A (en) * | 2022-01-12 | 2022-02-15 | 存灏技术(武汉)有限公司 | Current data acquisition, analysis and transmission system and method based on can protocol |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100458756C (en) * | 2006-04-10 | 2009-02-04 | 重庆大学 | Management system of power battery for mixed-power automobile |
| JP5670212B2 (en) * | 2011-01-28 | 2015-02-18 | 日立マクセル株式会社 | Battery unit |
| CN102263303B (en) * | 2011-06-02 | 2016-09-14 | 福州天和新能电子科技有限公司 | Modular lithium power battery and management systems and management method thereof |
| CN102447288A (en) * | 2011-12-05 | 2012-05-09 | 三门峡速达交通节能科技有限公司 | Power lithium-ion battery pack intelligent management system specially used for electric automobile |
| CN202965997U (en) * | 2012-12-25 | 2013-06-05 | 北京理工大学 | Detection device for each battery of battery pack in electric automobile in working state |
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Address after: 100080 room 1005, 6 Haidian North 2nd Street, Haidian District, Beijing Patentee after: POTEVIO NEW ENERGY CO.,LTD. Country or region after: China Patentee after: PetroChina Kunlun Wanglian Electric Energy Technology Co.,Ltd. Address before: 100080 room 1005, 6 Haidian North 2nd Street, Haidian District, Beijing Patentee before: POTEVIO NEW ENERGY CO.,LTD. Country or region before: China |