CN106602623B - Battery management system, updating method thereof, electric vehicle control system and electric vehicle - Google Patents
Battery management system, updating method thereof, electric vehicle control system and electric vehicle Download PDFInfo
- Publication number
- CN106602623B CN106602623B CN201510672331.4A CN201510672331A CN106602623B CN 106602623 B CN106602623 B CN 106602623B CN 201510672331 A CN201510672331 A CN 201510672331A CN 106602623 B CN106602623 B CN 106602623B
- Authority
- CN
- China
- Prior art keywords
- battery
- battery management
- update
- battery monitoring
- monitoring unit
- 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
Images
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
Abstract
The invention provides a battery management system, an updating method thereof, an electric vehicle control system and an electric vehicle, wherein the battery management system comprises: battery management unit and a plurality of battery monitoring unit, wherein every battery monitoring unit is used for gathering battery monomer information respectively and controls battery monomer and carries out the charge-discharge, battery management unit is used for controlling a plurality of battery monitoring units receive the battery monomer information that a plurality of battery monitoring units sent, battery management unit pass through the CAN bus respectively with a plurality of battery monitoring unit connect, a plurality of battery monitoring unit serial connections to first a plurality of battery monitoring unit of serial connection the input with battery management unit's output is connected, last one in a plurality of battery monitoring unit of serial connection the output with battery management unit's input is connected.
Description
Technical Field
The invention relates to the field of vehicle-mounted power batteries, in particular to a battery management system, an updating method thereof, an electric vehicle control system and an electric vehicle.
Background
The electric automobile has been widely used due to the advantages of environmental protection and no pollution. The function and performance of the battery as an important part for storing electric energy also determine the development level of electric vehicle technology. In order to make up for the defect that the charging and discharging characteristics of the existing single batteries are not absolutely consistent, the existing electric automobile is additionally provided with a battery management system for carrying out balanced management on the single batteries such as charging and discharging.
As shown in fig. 1, the Battery Management system generally includes a Battery Management Unit 01(Battery Control Unit, BCU for short, also called Battery motherboard) and a plurality of Battery monitoring units 02(Battery Management Unit, BMU for short, also called Battery slave boards), which communicate with each other through a CAN bus. The BMU is responsible for collecting the voltage, the temperature and other data of the single battery and the module and executing the command of the battery management unit BCU to charge and discharge the single battery in a balanced manner. The BCU is responsible for monitoring the voltage, the temperature and other data of all the single batteries, and the single batteries are charged and discharged through the BMU.
The battery management system often needs to perform tasks such as system software update, and for example, the following methods are generally adopted to update the software program of the battery management system at present: for BCU, program updating CAN be carried out by using a PC through a whole vehicle CAN bus BCU; for a plurality of BMUs, two updating modes are included: firstly, independently updating programs of BMUs by adopting a debugging interface; and secondly, distributing a unique identifier for each BMU through an internal CAN bus, and independently updating programs of the BMUs of the battery monitoring units by using the BCU according to the identifiers.
When the debugging interface is adopted to update the program of the battery monitoring unit, the battery pack needs to be disassembled, and the debugger is used for independently connecting and updating the battery monitoring unit, so that the labor cost is high; when the BCU is used for independently updating programs of the BMUs according to the identifiers, the BCU needs to independently update the in-line programs according to the unique identifiers of the BMUs, and in the mode, under the condition that the BMUs are large in number, difficulty exists in determining the updating sequence of the battery monitoring units, and the updating time is long. It follows that existing battery management systems make the system less efficient at performing tasks such as refresh operations.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is that the existing battery management system has high load and low working efficiency.
To solve the above technical problem, the present invention provides a battery management system, including: battery management unit and a plurality of battery monitoring unit, wherein every battery monitoring unit is used for gathering battery monomer information respectively and controls battery monomer and carries out the charge-discharge, battery management unit is used for controlling a plurality of battery monitoring units receive the battery monomer information that a plurality of battery monitoring units sent, battery management unit pass through the CAN bus respectively with a plurality of battery monitoring unit connect, a plurality of battery monitoring unit serial connections to first a plurality of battery monitoring unit of serial connection the input with battery management unit's output is connected, last one in a plurality of battery monitoring unit of serial connection the output with battery management unit's input is connected.
Preferably, the battery management unit is configured to send update data to the plurality of battery monitoring units through the CAN bus.
Preferably, the battery management unit is further configured to send an update start signal through an output terminal thereof after sending the update data to the plurality of battery monitoring units; the battery monitoring unit is used for receiving the updating start signal and updating by using the updating data, and sending an updating completion signal to the next battery monitoring unit connected in series after the updating is completed until the last battery monitoring unit in the plurality of battery monitoring units connected in series sends an updating completion signal after the updating is completed; and the battery management unit is also used for judging that the updating of the battery monitoring unit is finished when the input end of the battery management unit receives the updating finishing number.
Preferably, when the battery monitoring unit fails to update, the updating is performed again and the failure times are recorded, and when the failure times are greater than the preset times, the battery monitoring unit which fails to update feeds back to the battery management unit through the CAN bus.
Preferably, the update start signal is sent by a synchronization signal output end of the battery management unit, and the update completion signal is received by a synchronization signal input end of the battery management unit.
Preferably, the update start signal is received by a synchronization signal input port of the battery monitoring unit, and the update completion signal is sent by a synchronization signal output port of the battery monitoring unit.
Correspondingly, the invention also provides an updating method of a battery management system, a battery management unit and a plurality of battery monitoring units, wherein each battery monitoring unit is respectively used for collecting battery monomer information and controlling a battery monomer to charge and discharge, the battery management unit is used for controlling the plurality of battery monitoring units and receiving the battery monomer information sent by the plurality of battery monitoring units, and the battery management unit is respectively connected with the plurality of battery monitoring units through a CAN bus, and the method comprises the following steps: the battery management unit sends update data to the battery monitoring units through the CAN bus; the output end of the battery management unit sends an update starting signal; the battery monitoring unit receiving the update start signal updates by using the update data, and sends an update completion signal to the next battery monitoring unit connected in series through the output end after the update is completed until the last battery monitoring unit in the plurality of battery monitoring units connected in series sends an update completion signal after the update is completed; and the input end of the battery management unit judges that the updating of the battery monitoring unit is finished when the updating completion number is received.
Preferably, the method further comprises: when the battery monitoring unit fails to update, updating is carried out again and failure times are recorded; and when the failure times are larger than the preset times, the battery monitoring unit which fails to update feeds back to the battery management unit through the CAN bus.
The invention also provides an electric vehicle control system, comprising: the vehicle control unit is used for sending an updating starting signal; and the battery management system is used for receiving the updating starting signal and updating by using the method when receiving the updating starting signal.
The invention also provides an electric vehicle which comprises the electric vehicle control system.
The battery management system provided by the invention enables the battery management unit and the plurality of battery monitoring units to form a serial loop, so that the battery management unit can control the plurality of subsequent battery monitoring units to sequentially execute specific tasks according to the serial connection sequence through the serial signal line; the system CAN execute various tasks, the battery management unit CAN send data required by task execution to each battery monitoring unit through the CAN bus, and the battery monitoring units are controlled to execute the tasks through the serial signal lines, so that the load of the battery management system CAN be reduced, and the working speed of the battery management system is improved.
The updating method of the battery management system provided by the invention can sequentially update the plurality of battery monitoring units which are connected in series, and feed back the battery management units after all the battery monitoring units are updated, the battery management units do not need to judge the updating state of each battery monitoring unit, and the updating states of all the battery monitoring units can be known only by once judgment, so that the load of the battery management system can be reduced, the updating speed of the battery management system is increased, and the method has higher working efficiency.
Drawings
The features and advantages of the present invention will be more clearly understood by reference to the accompanying drawings, which are illustrative and not to be construed as limiting the invention in any way, and in which:
fig. 1 is a structural view of a battery management system according to the related art;
FIG. 2 is a diagram of a battery management system according to an embodiment of the present invention;
fig. 3 is a flowchart of an update method of a battery management system according to an embodiment of the present invention;
fig. 4 is a structural diagram of an electric vehicle control system according to an embodiment of the present invention.
Detailed Description
Fig. 2 shows a diagram of a battery management system according to an embodiment of the present invention, the system including: the battery monitoring system comprises a battery management unit (BCU)11 and n Battery Monitoring Units (BMUs) 12, wherein the BCU is used for controlling the n BMUs and receiving battery cell information sent by the monitoring units of the n batteries, and n is a positive integer larger than 1. BMUs are used for gathering battery monomer information and control battery monomer and carry out the charge-discharge, and BCU passes through the CAN bus and is connected with n BMUs respectively, n BMU series connection to the input of the first BMU in n BMUs of series connection is connected with BCU's output, and last BMU's in n BMUs of series connection output is connected with BCU's input.
The BCU and the n BMUs form a serial loop, so that the BCU can control the subsequent n BMUs to sequentially execute specific tasks according to the serial connection sequence through a serial signal line. The system CAN execute various tasks, the BCU CAN send data required by executing the tasks to each BMU through the CAN bus, and the BMU is controlled to execute the tasks through the serial signal line, so that the load of the BCU CAN be reduced, and the working speed of the battery management system is improved.
The battery management system is particularly suitable for executing the updating task of the battery management system, when the program of the system needs to be updated, the PC end CAN be connected to the CAN bus of the whole vehicle through a USB-CAN tool, so that the PC end directly carries out point-to-point communication with the BCU, and the PC end sends instructions and updates data to the BCU.
A method for updating a battery management system according to an embodiment of the present invention, which may be performed by the above-described battery management system, will be described in detail with reference to fig. 2 and 3, and includes the following steps:
s1, the BCU transmits the update data to the plurality of BMUs through the CAN bus, whereby the update data CAN be transmitted in parallel.
S2, the output terminal of the BCU issues a level signal (update start signal).
S3, the BMU receiving the level signal updates with the update data; referring to fig. 2, after the BCU transmits update data to the n BMUs, an update start signal is transmitted through an output terminal thereof, and a first BMU (1) connected to an output terminal of the BMUs receives the update start signal and performs update using the update data.
S4, the BMU judges whether the update is successful, if so, the BMU executes the step S8, and if not, the BMU executes the step S5;
s5, recording failure times;
s6, judging whether the failure times is larger than the preset times, if so, returning to the step S3 to renew, and if so, executing the step S7;
s7, the BMU failed to update feeds back to the BCU through the CAN bus, and the BCU executes the step S11 according to the feedback result of the BMU;
s8, the BMU sends a level signal (update complete signal) to the next BMU connected in series, and repeats steps S3-S8 until the last BMU of the plurality of BMUs connected in series sends a level signal (update complete signal) after the update is complete, see fig. 2, after the BMU (1) has been updated, the next BMU (2) connected in series sends an update complete signal, and then all BMUs perform the update according to the above operations until the last BMU (n) of the n BMUs connected in series sends an update complete signal to the BCU after the update is complete;
s9, whether the input end of the BCU receives the level signal (updating completion signal) in the preset time, if yes, executing the step S10, otherwise, executing the step S11;
s10, the BCU judges that all BMUs are updated completely;
s11, the BCU determines that the update failed, and then may return to step S2 to perform the update again.
The embodiment can enable a plurality of BMUs connected in series to be sequentially updated, and the BCUs can feed back after all BMUs are updated, the BCUs do not need to judge the updating state of each BMU, and the updating states of all BMUs can be known only by judging once, so that the load of the BCUs can be reduced, the updating speed of the battery management system is increased, and the method has high working efficiency.
In this embodiment, the update start signal and the update completion signal are preferably analog signals, the analog signals are relatively simple level changes, the efficiency of monitoring the level changes is higher than the efficiency of identifying digital signals or digital instructions, the update start signal may be sent by a synchronization signal output end of the BCU, and the update completion signal may be received by a synchronization signal input end of the BCU; the update start signal may be received by a synchronization signal input port of the BMU, and the update completion signal may be sent by a synchronization signal output port of the BMU; those skilled in the art will understand that the update start signal and the update complete signal may also be complex signals such as digital signals or digital commands, for which digital signals or digital commands need to be transmitted and received by using digital signal ports on the BCU and the BMU, and further need to identify the specific meaning of the signals.
The steps S5-S7 are optional, and those skilled in the art can determine which BMU fails to update according to the feedback information obtained by the BCU, which helps the skilled person to solve the failure in a targeted manner.
Another embodiment of the present invention also provides an electric vehicle control system, which may be provided in an electric vehicle, as shown in fig. 4, including: the vehicle control unit 41 is configured to send an update start signal;
the battery management system 42, i.e. the battery management system in the above embodiment, the battery management unit in the system is configured to receive the update start signal, and the battery management system 42 updates the battery management unit by using the update method in the above embodiment when receiving the update start signal. In addition, the update data may be provided by a mobile storage device, and when the battery management system 42 receives the update start signal, the vehicle control unit 41 may read the update data from the mobile storage device and transmit the update data to the battery management unit.
According to the scheme, the vehicle control unit in the automobile controls the battery management system to update, and external equipment does not need to be connected, so that the convenience of updating operation can be improved.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (8)
1. A battery management system, comprising: battery management unit and a plurality of battery monitoring unit, wherein every battery monitoring unit is used for gathering battery monomer information respectively and controls battery monomer and carries out the charge-discharge, battery management unit is used for controlling a plurality of battery monitoring unit receive the battery monomer information that a plurality of battery monitoring unit sent, battery management unit pass through the CAN bus respectively with a plurality of battery monitoring unit connect its characterized in that:
the plurality of battery monitoring units are connected in series, the input end of the first battery monitoring unit in the plurality of battery monitoring units connected in series is connected with the output end of the battery management unit, and the output end of the last battery monitoring unit in the plurality of battery monitoring units connected in series is connected with the input end of the battery management unit;
the battery management unit is also used for sending an update starting signal through the output end of the battery management unit after sending update data to the plurality of battery monitoring units; the battery monitoring unit is used for receiving the updating start signal and updating by using the updating data, and sending an updating completion signal to the next battery monitoring unit connected in series after the updating is completed until the last battery monitoring unit in the plurality of battery monitoring units connected in series sends an updating completion signal after the updating is completed;
and when the failure times are larger than the preset times, the battery monitoring unit which fails to update feeds back to the battery management unit through the CAN bus.
2. The battery management system of claim 1, wherein the battery management unit is configured to send update data to the plurality of battery monitoring units via the CAN bus.
3. The battery management system of claim 2, wherein the battery management unit is further configured to determine that the battery monitoring unit is updated when the input terminal of the battery management unit receives an update completion number.
4. The battery management system according to any one of claims 1 or 3, wherein the update start signal is sent by a synchronization signal output terminal of the battery management unit, and the update completion signal is received by a synchronization signal input terminal of the battery management unit.
5. The battery management system of claim 4, wherein the update start signal is received by a synchronization signal input port of the battery monitoring unit, and the update completion signal is sent from a synchronization signal output port of the battery monitoring unit.
6. The utility model provides an update method of battery management system, battery management system includes battery management unit and a plurality of battery monitoring unit, wherein every battery monitoring unit is used for gathering battery monomer information and control battery monomer and carries out the charge-discharge respectively, battery management unit is used for controlling a plurality of battery monitoring unit and receives the battery monomer information that a plurality of battery monitoring unit sent, battery management unit pass through the CAN bus respectively with a plurality of battery monitoring unit are connected which characterized in that, the method includes:
the battery management unit sends update data to the battery monitoring units through the CAN bus;
the output end of the battery management unit sends an update starting signal;
the battery monitoring unit receiving the update start signal updates by using the update data, and sends an update completion signal to the next battery monitoring unit connected in series through the output end after the update is completed until the last battery monitoring unit in the plurality of battery monitoring units connected in series sends an update completion signal after the update is completed;
the input end of the battery management unit judges that the updating of the battery monitoring unit is finished when the updating completion number is received;
when the battery monitoring unit fails to update, updating is carried out again and failure times are recorded;
and when the failure times are larger than the preset times, the battery monitoring unit which fails to update feeds back to the battery management unit through the CAN bus.
7. An electric vehicle control system, comprising:
the vehicle control unit is used for sending an updating starting signal;
a battery management system, wherein the battery management unit is configured to receive the update start signal, and the battery management system is updated by the method of claim 6 when receiving the update start signal.
8. An electric vehicle characterized by comprising the electric vehicle control system of claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510672331.4A CN106602623B (en) | 2015-10-16 | 2015-10-16 | Battery management system, updating method thereof, electric vehicle control system and electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510672331.4A CN106602623B (en) | 2015-10-16 | 2015-10-16 | Battery management system, updating method thereof, electric vehicle control system and electric vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106602623A CN106602623A (en) | 2017-04-26 |
| CN106602623B true CN106602623B (en) | 2020-03-24 |
Family
ID=58553822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510672331.4A Expired - Fee Related CN106602623B (en) | 2015-10-16 | 2015-10-16 | Battery management system, updating method thereof, electric vehicle control system and electric vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106602623B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108107370B (en) * | 2017-12-05 | 2021-02-26 | 华为数字技术（苏州）有限公司 | Battery monitoring unit and related control method |
| CN110609697A (en) * | 2019-09-18 | 2019-12-24 | 上海元城汽车技术有限公司 | Upgrading method and device of battery management system and battery management system |
| CN110931898A (en) * | 2019-12-02 | 2020-03-27 | 北京汽车股份有限公司 | Power storage battery detection method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002125326A (en) * | 2000-10-12 | 2002-04-26 | Honda Motor Co Ltd | Battery charge control method |
| JP4796119B2 (en) * | 2008-12-09 | 2011-10-19 | 三菱重工業株式会社 | Battery device |
| CN103887836B (en) * | 2012-12-20 | 2016-08-31 | 东莞钜威动力技术有限公司 | A kind of battery management system and method thereof |
| CN104716393A (en) * | 2013-12-17 | 2015-06-17 | 北汽福田汽车股份有限公司 | Battery parameter acquisition control method, device and battery management system |
| CN103809476A (en) * | 2014-02-24 | 2014-05-21 | 中国第一汽车股份有限公司 | Dynamic management method for IDs of module control units of distributed battery management system |
| CN104553850B (en) * | 2014-12-25 | 2017-04-05 | 郑州精益达汽车零部件有限公司 | A kind of data acquisition unit of battery management system |
-
2015
- 2015-10-16 CN CN201510672331.4A patent/CN106602623B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN106602623A (en) | 2017-04-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102842939B (en) | Battery management system and battery management method | |
| EP3648234A1 (en) | Wireless battery management apparatus and battery pack including same | |
| CN105914806A (en) | Battery pack, battery charging station, and charging method | |
| CN106849237B (en) | Flexible charging control system and method and flexible charging system | |
| CN106602623B (en) | Battery management system, updating method thereof, electric vehicle control system and electric vehicle | |
| CN110999023A (en) | Method and device for balancing the state of charge of individual cells of a battery system | |
| CN108183518B (en) | Battery pack balance control method and device and balance control equipment | |
| CN107878243A (en) | A kind of battery management system and method | |
| CN105785965A (en) | Finished automobile control strategy and network test platform for new energy automobiles | |
| CN105700447A (en) | Monitoring method of electric vehicle and monitoring platform | |
| CN103010039A (en) | Boot loading method of battery management systems | |
| CN108021735B (en) | Battery simulation method, upper computer, real-time simulator and battery simulation system | |
| CN105486951A (en) | Portable battery management system diagnosis apparatus and working method thereof | |
| CN109435722B (en) | Multichannel charging adapter device and system | |
| WO2024066323A1 (en) | Lithium-ion battery pack wireless control method, system, and vehicle | |
| CN106873417A (en) | Energy-storage system and remote upgrade method | |
| CN116130804B (en) | Battery management system for energy storage system | |
| CN103840523A (en) | Information and energy distribution and expansion device of multiple battery packs | |
| KR20200031931A (en) | System and method for recognition of BMS | |
| US20190393560A1 (en) | Method and system for managing battery pack | |
| CN213179683U (en) | Electronic detonator initiator | |
| CN103887855A (en) | Control method and device of automobile generator | |
| CN106154075B (en) | Automatic checking system and method | |
| CN111290367B (en) | Gateway control method and device for unmanned tractor | |
| CN111123780B (en) | Number configuration method and device, electronic equipment and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20180426 Address after: No. 188, Miyun District, Miyun District, Beijing, Beijing Applicant after: Beijing treasure Car Co.,Ltd. Address before: 102206, Beijing, Shahe Town, Changping District Road, sand Yang Applicant before: BEIQI FOTON MOTOR Co.,Ltd. |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200324 Termination date: 20211016 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |