CN114079091A - Battery system coding grouping method - Google Patents
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- CN114079091A CN114079091A CN202010802818.0A CN202010802818A CN114079091A CN 114079091 A CN114079091 A CN 114079091A CN 202010802818 A CN202010802818 A CN 202010802818A CN 114079091 A CN114079091 A CN 114079091A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/18—Network planning tools
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
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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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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Sustainable Development (AREA)
- Life Sciences & Earth Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention belongs to the technical field of battery systems, and particularly relates to a battery system coding and grouping method. The method comprises the steps of firstly, acquiring information of battery boxes and physical address information of wireless communication modules of the battery boxes one by one according to the sequence of the battery boxes in a power line; then matching the acquired information of the battery boxes with the information of the battery boxes stored in the configuration library, and checking whether the battery boxes at each position are correct one by one according to the storage sequence in the configuration library; after the battery system is successfully matched, different wireless network numbers are distributed to each battery box, the wireless network numbers are bound with the physical address information of the corresponding wireless communication module, and then the distribution condition and the binding condition of all the wireless network numbers are sent to each battery box; and all the battery boxes further perform wireless networking. The method is simple, and can rapidly and accurately distribute the correct wireless network number to the correct battery box through wireless communication, so as to realize wireless networking.
Description
Technical Field
The invention belongs to the technical field of battery systems, and particularly relates to a battery system coding and grouping method.
Background
A battery system in an electric vehicle includes a plurality of battery boxes. At the beginning of the design, the battery box can be designed and assembled according to the voltage of different branches, namely, after the vehicle model is fixed, the battery box of which model is assembled at which position on the vehicle is designed, and the battery box can not be assembled at any time, otherwise, the voltages of different branches can generate difference. And the serial number of the battery box is determined well, and cannot be numbered randomly, otherwise, the real-time state of each string of single batteries cannot be accurately monitored.
And a battery management system slave controller is arranged in each battery box and is communicated with the battery management system master controller. At present, most of battery boxes adopt a wired communication mode, namely, a battery management system slave controller adopts a wired communication mode to realize data interaction with a battery management system master controller, and the battery management system slave controller is grouped through a low-voltage communication wire harness of the master controller. As shown in fig. 1, the numbering of the battery boxes is performed by comparing the voltages on the high-voltage sampling wire harnesses, that is, the total negative of the power system gives a common voltage reference to all the battery management system slave controllers (BMS slave in fig. 1), the BMS slave controllers acquire the voltages on the high-voltage numbering wire harnesses and send the voltages to the battery management system master controller (BMS master controller), the BMS master controller receives the voltages sent by the slave controllers and sorts the voltages according to the sizes, and then the BMS slave controllers are numbered, and the numbering is the numbering of the battery boxes. However, this grouping method has the following problems: the coding can be carried out only after high voltage is switched on; the risk is high, and the failure rate of the connector and the wire harness in wired communication is high; the connecting wire harness is more and not beautiful; when one slave controller fails, the coding of other boxes can be influenced, and the reliability is poor.
In order to solve the problem, a battery management system using wireless communication is adopted, as is the case with the chinese utility model patent with the publication number CN205440016U, a slave control unit (a battery management system slave controller) inside each battery box communicates with a master control unit (a battery management system master controller) in a wireless communication manner, and each slave controller and the master controller are in the same communication network. How to simply and rapidly encode the codes into groups and how to avoid interference of other vehicles in the communication process are problems which need to be solved urgently.
Disclosure of Invention
The invention provides a battery system coding and grouping method which is used for realizing simple and quick wireless networking.
In order to solve the technical problem, the technical scheme of the invention comprises the following steps:
the invention provides a battery system coding and grouping method, which comprises the following steps:
according to the sequence of the battery boxes in the power line, scanning the labels on the battery boxes one by one to obtain information of the battery boxes and physical address information of wireless communication modules of the battery boxes;
matching the acquired information of the battery boxes with the information of the battery boxes stored in the configuration library, checking whether the battery boxes at all positions are correct one by one according to the storage sequence in the configuration library, and if the battery boxes at all positions are correct, judging that the battery system is successfully matched; the configuration library stores information of battery boxes appointed by each position, and the storage sequence is the same as the sequence of the battery boxes in the power line;
after the battery system is successfully matched, different wireless network numbers are distributed to each battery box, the wireless network numbers are bound with the physical address information of the corresponding wireless communication module, and then the distribution condition and the binding condition of all the wireless network numbers are sent to each battery box;
and all the battery boxes further perform wireless networking.
The beneficial effects of the above technical scheme are: the invention scans labels on the battery boxes one by one according to the sequence of the battery boxes in a power line to obtain the information of the battery boxes and the physical address information of the wireless communication modules of the battery boxes, matches the information of the battery boxes with the stored information in a configuration library, allocates different wireless network numbers to each battery box after matching is successful, binds the wireless network numbers with the physical address information of the corresponding wireless communication modules, and sends the information to each battery box, thereby realizing wireless networking. The method is simple, and can rapidly and accurately distribute the correct wireless network number to the correct battery box through wireless communication, so as to realize wireless networking. Compared with a wired mode, the fault rate is low, and the reliability is high.
Furthermore, in order to filter signals of other vehicles, various vehicle types are stored in the configuration library, and each vehicle type corresponds to a group of information of the battery box specified at each position.
Further, if the matching is unsuccessful, the wrong battery box is replaced according to the information of the battery boxes designated at each position stored in the configuration library, so that the battery box at each position is correct.
Further, the information of the battery box includes a model of the battery box.
Further, the configuration library also stores information of wireless communication modules appointed to be used by at least one controller of the battery management system main controller, the charging controller, the vehicle control unit and the insulation monitoring controller; the method also includes the steps of:
scanning labels on controllers related to information stored in a configuration library in a main controller, a charging controller, a vehicle control unit and an insulation monitoring controller of the battery management system one by one to acquire information of corresponding wireless communication modules and physical address information of the corresponding wireless communication modules;
and matching the acquired information of the wireless communication module with the information of the wireless communication module stored in the configuration library to check whether each used wireless communication module is correct, and if each used wireless communication module is correct, judging that the wireless communication module is successfully matched.
Further, the information of the wireless communication module includes a model of the wireless communication module.
Drawings
FIG. 1 is a prior art encoding grouping approach;
FIG. 2 is a schematic diagram of a wireless communication based battery management system of the present invention;
FIG. 3 is a flow chart of a battery system code grouping method of the present invention;
FIG. 4 is a flow chart of the present invention for transmitting data after grouping;
fig. 5 is a flow chart of the present invention for receiving data after grouping.
Detailed Description
The battery management system in the vehicle adopts a wireless communication mode, namely, a battery management system slave controller (BMS slave controller for short) is arranged in each battery box, and the BMS slave controller is communicated with the BMS master controller in a wireless communication mode. Moreover, as shown in fig. 2, the information processing center MCU, the charging controller, the insulation monitoring controller, and the like all have wireless communication modules, and all controllers having the wireless communication modules are in the same network, so that data interaction between them can be realized.
Each battery box is attached with a two-dimensional code label, and the two-dimensional code label comprises a signal of the battery box (including the model of the battery box) and physical address information (called as a battery box ID) of a wireless communication module of the battery box. And a two-dimensional code label is also pasted on the frame of each vehicle, and the front of the two-dimensional code table contains the vehicle model. Two-dimensional code labels are also pasted on the main controller, the charging controller, the vehicle control unit and the insulation monitoring controller of the battery management system, and the two-dimensional code labels comprise the type of the used wireless communication module and the physical address information (called controller ID) of the corresponding wireless communication module.
In order to obtain the information of each battery box, each two-dimensional code label can be scanned through a handheld code scanning gun. Moreover, this sign indicating number rifle is swept to hand-held type still has display interface and wireless communication module, can show the information of each battery box of gathering, still can transmit the information of acquireing for information processing center MCU through wireless communication module to supply information processing center MCU to encode according to these information and become in groups.
The information processing center MCU can obtain the information in the configuration library. After the vehicle model is fixed, the battery box of any model is assembled at any position on the vehicle, so that the battery box cannot be assembled at any place. The configuration library stores configuration tables of various vehicle types, each configuration table stores information (including the model of the battery box) of a battery box appointed to be placed at each position and information (including the model of a wireless communication module used by the controller) of each controller, and the information of the battery boxes is stored according to the sequence of voltage and electromotive force, namely the sequence of the battery boxes in a power line.
Based on the above hardware device, the battery system coding grouping method of the present invention can be implemented, the flow of which is shown in fig. 3, and the steps are as follows:
step one, scanning a two-dimensional code label attached to a frame through a handheld code scanning gun to obtain vehicle type information, and sending the information to an information processing center MCU. And the information processing center MCU calls a configuration table corresponding to the vehicle type from the configuration library. Or after the vehicle type information is acquired, the vehicle type information is directly displayed through the handheld code scanning gun, and at the moment, a worker calls the configuration table corresponding to the vehicle type from the configuration library according to the vehicle type information.
And step two, scanning the two-dimensional code labels on all the battery boxes one by one through a handheld code scanning gun according to the sequence of the battery boxes in the power connection circuit so as to obtain the information of each battery box in sequence, including the model of each battery box. And the information is transmitted to an information processing center MCU through a wireless communication module of the handheld code scanning gun.
Step three, the information processing center MCU matches the obtained model of the battery box with the model information of the battery box in the configuration table one by one according to the called configuration table to check whether the battery box placed at each position of the vehicle is correct and is consistent with the model of the designated position of the vehicle type: if the matching result is that the model of the battery box placed at a certain position or certain positions is incorrect, replacing the battery box with the wrong model as the battery box with the correct model at the positions according to the model requirements in the configuration table; and if the battery boxes placed at each position are correct, judging that the battery boxes are successfully matched.
And step four, under the condition that the battery boxes are successfully matched, sequentially distributing a wireless network number (hereinafter referred to as a number) to each battery box so as to bind the number and the ID of the battery box. Therefore, in the subsequent data transmission and processing process, the BMS slave control transmits the acquired battery cell information together with the serial number of the battery box to the BMS master control, and the BMS master control can know the information of the second battery cell of the second battery box. The number can be distributed through human-computer interaction input of the handheld code scanning gun.
And step five, continuously scanning the two-dimensional code labels attached to the main controller, the charging controller, the vehicle control unit and the insulation monitoring controller of the battery management system to obtain the models of the wireless communication modules used by the controllers. And the information is transmitted to an information processing center MCU through a wireless communication module of the handheld code scanning gun.
Step six, the information processing center MCU matches the obtained model of the wireless communication module used by the controller with the model information of the wireless communication module in the configuration table one by one according to the called configuration table to check whether the model of the wireless communication module used by each controller is correct and is consistent with the appointed model of the vehicle type: if the wireless communication modules are consistent, the models of the wireless communication modules used by each controller are correct, and the wireless communication modules are judged to be successfully matched.
And seventhly, distributing the network number to each controller in sequence under the condition that the wireless communication modules are successfully matched, and binding the number with the ID of each controller. At this time, it is explained that the entire power supply system is correctly installed.
And step eight, forming a wireless configuration library of the vehicle by using the information, wherein the wireless configuration library comprises the VIN, the wireless communication module ID list and the secret key, and writing the wireless configuration library into all the wireless communication modules. Thus, networking can be performed.
When the power supply system is awakened by electrifying next time, each wireless communication module sends out the corresponding ID address, the BMS filters the received wireless communication module address by relying on the wireless configuration library, wireless signals of other vehicles are filtered, and the efficiency of wireless communication is improved.
In order to ensure that the wireless system is not interfered by external systems intentionally or unintentionally, the invention also provides a method for regularly changing the secret key. During the first grouping, a unified key is distributed to all the wireless communication modules through the display interface of the handheld code scanner, and the key can be loaded after the ID and the number (namely, the ID + the number + the key is a password).
Thus, the data transmission flow after encoding into a group is shown in fig. 4: firstly, the BMS slave controller forms message data by data (voltage, temperature or command data) according to a protocol, and then calculates a secret key by using a specified encryption algorithm and the message data; and then, forming sending data according to the mode of the number + ID + message data + secret key, and sending the sending data to the BMS main control through the wireless communication module.
The data receiving flow after encoding into groups is shown in fig. 5: firstly, the BMS master control receives data sent by the BMS master control, then whether the serial number and the ID are in a wireless configuration library of the vehicle or not is judged, and if not, the message data are abandoned; if the message data are consistent, analyzing the message data by using a specified protocol, and analyzing which string of information is according to the binding relationship between the ID and the serial number.
BMS owner, from the key of controller adopt the mechanism of updating simultaneously, for example when the wireless communication module is awaken up to power on every time, all wireless communication modules handshake after success, the key is changed in unison, at next communication moment, adopt new key and password, also can select the key of unified periodic replacement, as long as ensure that all wireless communication modules change common key simultaneously, and the key in the database is paird in the synchronous update, use new key handshake success when just can guaranteeing to recombine, can effectively improve whole wireless system's security and signal integrality like this. When the vehicles are powered on again, the vehicles need to be grouped, and a wireless configuration library used when the vehicles are grouped for the first time is used; when a vehicle maintains and replaces a battery box, a wireless configuration library needs to be updated, and a wireless ID list in the wireless configuration library is updated; when the battery boxes detached from the vehicle are used in echelon, the technology of the invention can be used for quick grouping; in order to enhance the security of data, a mechanism for regularly updating the secret key can be introduced, and after each time of power-on again, the secret key is synchronously replaced by all the wireless modules under the condition that the normal BMS work is not influenced, so that the cracking difficulty of a wireless system can be improved;
the invention can rapidly and accurately distribute the correct wireless network number to the correct battery box through the wireless communication module. Moreover, the invention adopts the handheld code scanning gun (or other forms of information input modes can be used), collects the battery information of each wireless communication module into the display equipment of the handheld code scanning gun, and codes the battery boxes one by one according to the preset scanning sequence; or the method of distributing codes one by one after all the codes are collected can be adopted, and the labels of the battery boxes can be automatically realized in the assembly process.
Moreover, a double-checking mechanism is formulated, wherein the first checking is to check whether the model of the battery box and the part is matched with the model of the battery box and the part appointed by the vehicle type at the position when the battery box and the wireless communication module are scanned, so that the power supply system is ensured to be installed correctly and numbered correctly; the second check is to ensure that the information collected by the wireless module master control is accurate, complete and safe through a VIN, ID and key multiple protection mechanism.
Claims (6)
1. A battery system code grouping method, comprising the steps of:
according to the sequence of the battery boxes in the power line, scanning the labels on the battery boxes one by one to obtain the information of the battery boxes and the physical address information of the wireless communication modules of the battery boxes;
matching the acquired information of the battery boxes with the information of the battery boxes stored in the configuration library, checking whether the battery boxes at all positions are correct one by one according to the storage sequence in the configuration library, and if the battery boxes at all positions are correct, judging that the battery system is successfully matched; the configuration library stores information of battery boxes appointed by each position, and the storage sequence is the same as the sequence of the battery boxes in the power line;
after the battery system is successfully matched, different wireless network numbers are distributed to each battery box, the wireless network numbers are bound with the physical address information of the corresponding wireless communication module, and then the distribution condition and the binding condition of all the wireless network numbers are sent to each battery box;
and all the battery boxes further perform wireless networking.
2. The battery system code grouping method according to claim 1, wherein the configuration library further stores various vehicle types, each vehicle type corresponding to a group of information of each position-designated battery box.
3. The battery system code grouping method according to claim 1, wherein if the matching is unsuccessful, the wrong battery box is replaced according to the information of the battery box designated at each position stored in the configuration library so that the battery box at each position is correct.
4. The battery system code grouping method according to claim 1, wherein the information of the battery box includes a model number of the battery box.
5. The battery system coding grouping method according to any one of claims 1 to 4, wherein the configuration library further stores information of wireless communication modules designated for use by at least one of a battery management system main controller, a charging controller, a vehicle controller, and an insulation monitoring controller; the method also includes the steps of:
scanning labels on controllers related to information stored in a configuration library in a main controller, a charging controller, a vehicle control unit and an insulation monitoring controller of the battery management system one by one to acquire information of corresponding wireless communication modules and physical address information of the corresponding wireless communication modules;
and matching the acquired information of the wireless communication module with the information of the wireless communication module stored in the configuration library to check whether each used wireless communication module is correct, and if each used wireless communication module is correct, judging that the wireless communication module is successfully matched.
6. The battery system grouping method according to claim 5, wherein the information of the wireless communication module comprises a model of the wireless communication module.
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| US10630082B1 (en) * | 2018-11-06 | 2020-04-21 | Wing Aviation Llc | Power communication to regulate charge of unmanned aerial vehicle |
| CN110534826A (en) * | 2019-08-18 | 2019-12-03 | 浙江万马新能源有限公司 | It is a kind of to utilize battery technology using big data combo echelon |
| CN110676520A (en) * | 2019-09-23 | 2020-01-10 | 惠州市科达星辰技术有限公司 | Wireless communication battery management system and control method thereof |
| CN111370788A (en) * | 2020-04-10 | 2020-07-03 | 天合光能股份有限公司 | Energy storage system BMS wireless networking communication system and method |
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