CN113709155A - Battery module daisy chain communication conversion method, system and terminal - Google Patents
Battery module daisy chain communication conversion method, system and terminal Download PDFInfo
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- CN113709155A CN113709155A CN202110993770.0A CN202110993770A CN113709155A CN 113709155 A CN113709155 A CN 113709155A CN 202110993770 A CN202110993770 A CN 202110993770A CN 113709155 A CN113709155 A CN 113709155A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/02—Constructional details
- H04Q1/028—Subscriber network interface devices
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4247—Bus transfer protocol, e.g. handshake; Synchronisation on a daisy chain bus
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/08—Protocols for interworking; Protocol conversion
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/02—Constructional details
- H04Q1/03—Power distribution arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40208—Bus networks characterized by the use of a particular bus standard
- H04L2012/40215—Controller Area Network CAN
Abstract
The invention provides a daisy chain communication conversion method and a system of battery modules, which comprises the following steps: acquiring daisy chain communication signals of one or more battery modules; the information analysis module integrates various daisy chain communication relay analysis chips, and analyzes the obtained daisy chain communication signals into corresponding daisy chain communication interaction information one by one; and directly outputting the daisy chain communication interaction information obtained by analysis, or coding the daisy chain communication interaction information into various general communication protocol signals and outputting the signals. A corresponding terminal is also provided. The invention solves the problem that the information of the proprietary daisy chain communication protocol can not be directly read in the prior art, and simultaneously realizes a general analysis technology of the proprietary daisy chain communication protocol and information conversion between the daisy chain communication protocol and various general communication protocols under the advantages of low cost, small volume and the like of the traditional daisy chain communication.
Description
Technical Field
The invention relates to the technical field of daisy chain communication, in particular to a battery module daisy chain communication conversion method, a system and a terminal.
Background
The Battery Management System (BMS) is used for intelligently managing and maintaining each battery module, preventing the battery module from being overcharged and overdischarged, prolonging the service life of the battery and monitoring the state of the battery. The master-slave battery management system has two main communication modes between the master board and the slave board: CAN communication and daisy chain communication. CAN communication has the characteristics of long application time and good communication stability, but more components are needed, so that the cost is high and the volume is large. In consideration of cost, application environment and the like, a new communication mode, namely daisy chain communication, is gradually developed in the industry, and is increasingly used due to the fact that the use of chips is reduced, the cost is more advantageous, and the daisy chain communication is suitable for relatively closed application scenes.
However, no industry standard is formed in the daisy chain communication technology at present, and mainly, each AFE chip manufacturer makes a private protocol, each AFE chip can only be used in cooperation with a bridge chip of its own, and names of each family to their own daisy chain communication technology are different.
Since the daisy chain communication is a proprietary protocol, there is a problem that it is not possible to directly read out the battery module information in the daisy chain communication. Based on the problem, the current practice is: through the additional sensors such as a universal meter and a temperature probe, the battery module voltage and temperature information are measured, and the state of the battery module is monitored. However, this method is time-consuming and labor-consuming, is expensive in cost, cannot obtain comprehensive information, increases the volume of the additional monitoring device, offsets the benefits brought by daisy chain communication, is also a waste of the battery management system equipped for the battery module itself, and cannot measure whether the equipped battery management system functions normally work in the battery module.
Through search, the following results are found:
the invention discloses a Chinese patent application 'daisy chain communication structure and communication method' with publication number CN110471877A, which comprises a conversion module and a daisy chain, wherein the conversion module is connected with an MCU, the daisy chain comprises a plurality of devices which are connected in sequence, the device arranged at one end of the daisy chain is connected with the conversion module, the device arranged at the other end is defined as a top device, DUART communication is adopted between every two adjacent devices, and the MCU is used for receiving external instructions and transmitting the instructions to the conversion module. According to the daisy chain device, the built-in DUART communication interface protocol only needs two communication interfaces, namely an upper communication interface and a lower communication interface, so that half-duplex bidirectional setting and communication protocol support are realized, the top end device is arranged for supporting bidirectional differential DUART, and voltage mode differential DUART is arranged, so that a high-voltage capacitor supporting low cost is isolated, the communication efficiency is improved, and the power consumption is more balanced. However, the communication structure and method still have the following problems:
the daisy chain communication is applied to the inside of a battery management system, namely, signals transmitted by the daisy chain communication are supplied to a battery management unit or a new energy vehicle for use, and cannot be presented in an intuitive or universal form to a user, and the battery module test still needs to measure information such as voltage and temperature through additionally arranged monitoring equipment, so that the state of the battery module is monitored.
Disclosure of Invention
The invention provides a daisy chain communication conversion method, a daisy chain communication conversion system and a daisy chain communication conversion terminal for battery modules, aiming at the defects in the prior art.
According to one aspect of the invention, a battery module daisy chain communication conversion method is provided, which comprises the following steps:
acquiring daisy chain communication signals of one or more battery modules;
analyzing the obtained daisy chain communication signals into corresponding daisy chain communication interaction information one by utilizing an information analysis module integrated with various daisy chain communication relay analysis chips;
and directly outputting the daisy chain communication interaction information obtained by analysis, or coding the daisy chain communication interaction information into various universal communication protocol signals and outputting the signals through corresponding universal communication protocol ports.
Preferably, the communication protocol of daisy chain communication includes: NXP, MAXIUM, TI, and LTC communication protocols.
Preferably, the plurality of common communication protocols includes: CAN protocol, serial port protocol, Ethernet protocol and USB protocol.
Preferably, the re-encoding comprises:
and acquiring corresponding physical information data from the daisy chain communication interaction information obtained by analysis, coding the physical information data into a corresponding message format or an information transmission format according to the requirement of a universal communication protocol transmission mode, and periodically transmitting the message format or the information transmission format to obtain a corresponding universal communication protocol signal.
Preferably, the method further comprises:
and storing the daisy chain communication interaction information obtained by analysis.
Preferably, the method further comprises:
and generating a control signal according to the daisy chain communication interaction information, transmitting the control signal to the daisy chain, and controlling and configuring the corresponding battery module.
Preferably, the method further comprises:
and displaying the daisy chain communication interaction information which is directly output through a display terminal.
Preferably, the method further comprises:
and forwarding the multiple universal communication protocol signals obtained by recoding to other communication terminals through corresponding universal communication protocol ports.
According to another aspect of the present invention, there is provided a battery module daisy-chain communication conversion system including:
a daisy chain signal acquisition module that acquires daisy chain communication signals of one or more battery modules;
the daisy chain information analysis module integrates various daisy chain communication relay analysis chips and analyzes the obtained daisy chain communication signals into corresponding daisy chain communication interaction information one by one;
and the universal communication protocol signal coding module is used for recoding the daisy chain communication interaction information obtained by analysis into various universal protocol signals.
Preferably, the system further comprises:
and the storage module is used for storing the daisy chain communication interaction information obtained by analysis.
Preferably, the system further comprises:
and the terminal display module displays the daisy chain communication interaction information obtained by analysis.
Preferably, the system further comprises:
and the universal signal output module is used for transmitting the various universal protocol signals to other communication terminals through corresponding communication interfaces for display.
According to a third aspect of the present invention, there is provided a terminal comprising a memory, a processor and a program stored on the memory and executable on the processor, the processor being operable to execute the method of any one of the above or to operate the system of any one of the above when the program is executed.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following beneficial effects:
1. the daisy chain communication conversion method, the system and the terminal of the battery module, which are provided by the invention, send out the signals analyzed from the daisy chain communication in a visual or universal form and give the signals to users, such as quality inspectors, battery pack test systems and the like. The analyzed signal CAN be directly displayed on a display terminal or recoded into a general data format (such as CAN, ethernet, etc.) and then output and displayed.
2. The daisy chain communication conversion method, the system and the terminal of the battery module realize the conversion of various daisy chain communication protocol information and solve the problem that the information of a special daisy chain communication protocol cannot be directly read in the prior art.
3. According to the daisy chain communication conversion method, the system and the terminal of the battery module, information interaction between the daisy chain communication protocol and various universal communication protocols is realized by recoding the daisy chain communication interaction information obtained by analysis corresponding to the various universal communication protocols.
4. The daisy chain communication conversion method, the system and the terminal of the battery module provided by the invention have the advantages of low cost, small volume and the like of the existing daisy chain communication, and simultaneously realize a general analysis technology of a proprietary daisy chain communication protocol and information conversion between the daisy chain communication protocol and various general communication protocols.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a flowchart illustrating a daisy-chain communication conversion method for battery modules according to an embodiment of the invention;
fig. 2 is a schematic diagram illustrating the operation of the daisy-chain communication conversion method for battery modules according to a preferred embodiment of the present invention;
fig. 3 is a schematic diagram of the constituent modules of the daisy-chain communication conversion system of battery modules according to an embodiment of the invention.
Detailed Description
The following examples illustrate the invention in detail: the embodiment is implemented on the premise of the technical scheme of the invention, and a detailed implementation mode and a specific operation process are given. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Fig. 1 is a flowchart of a daisy chain communication conversion method for battery modules according to an embodiment of the present invention.
As shown in fig. 1, the daisy-chain communication conversion method for battery modules according to the embodiment may include the following steps:
s100, acquiring daisy chain communication signals of one or more battery modules;
s200, adopting an information analysis module integrated with various daisy chain communication relay analysis chips to analyze the obtained daisy chain communication signals into corresponding daisy chain communication interaction information one by one;
and S300, directly outputting the daisy chain communication interaction information obtained by analysis, or recoding the daisy chain communication interaction information into a plurality of universal communication protocol signals and outputting the signals through corresponding universal communication protocol ports.
In this embodiment, as a preferred embodiment, the method may further include the steps of:
and S400, generating a control signal according to the daisy chain communication interaction information, transmitting the control signal to the daisy chain, and controlling and configuring the corresponding battery module.
In this embodiment, as a preferred embodiment, the method may further include the steps of:
and S500, storing the daisy chain communication interaction information obtained by analysis.
In this embodiment, as a preferred embodiment, the method may further include the steps of:
and S600a, displaying the daisy chain communication interaction information directly output through a display terminal.
In this embodiment, as a preferred embodiment, the method may further include the steps of:
s600b, the recoded multiple universal communication protocol signals are forwarded to other communication terminals through corresponding universal communication protocol ports.
In S100 of this embodiment, as a preferred embodiment, the communication protocol of daisy chain communication may include: NXP, MAXIUM, TI, and LTC communication protocols.
In S200 of this embodiment, as a preferred embodiment, the multiple general communication protocols may include: CAN protocol, serial port protocol, Ethernet protocol and USB protocol.
In S500 of this embodiment, as a preferred embodiment, the daisy chain communication mutual information obtained by parsing is stored on the onboard SD card.
In S600b of this embodiment, as a preferred embodiment, the obtained multiple types of universal communication protocol signals are forwarded to other communication terminals through corresponding universal communication protocol ports and then displayed.
In S300 of this embodiment, as a preferred embodiment, a specific method of re-encoding may include:
acquiring physical information data such as voltage, temperature and the like from the daisy chain communication interaction information obtained by analysis; according to the requirements of CAN, Ethernet and other general communication protocol transmission modes, the codes are in formats such as CAN messages or Ethernet transmission information, and are periodically transmitted to obtain corresponding general communication protocol signals.
Fig. 2 is a schematic operation diagram of a daisy-chain communication conversion method for battery modules according to a preferred embodiment of the present invention.
As shown in fig. 2, the daisy-chain communication conversion method for battery modules according to the preferred embodiment may include the following steps:
step 1, connecting a daisy chain communication interface with a battery module to acquire a daisy chain communication signal of one or more battery modules;
step 2, adopting an information analysis module integrated with various daisy chain communication relay analysis chips to analyze the obtained daisy chain communication signals into corresponding daisy chain communication interaction information one by one and display the information through a display terminal;
step 3, recoding the daisy chain communication interaction information obtained by analysis into various general communication protocol signals including a CAN protocol, a serial port protocol, an Ethernet protocol and/or a USB protocol and the like, and forwarding the signals to other communication terminals through communication interfaces such as corresponding CAN communication interfaces, serial port communication interfaces, Ethernet communication interfaces and/or USB communication interfaces and the like to finish the presentation of the daisy chain communication signals;
and 4, generating a control signal according to the daisy chain communication interaction information, transmitting the control signal to the daisy chain, and controlling and configuring the corresponding battery module.
In some embodiments of the preferred embodiment:
the daisy chain communication signal of the single or the plurality of battery modules is read and displayed on a screen.
Resolving the proprietary daisy chain communication signal, the supported communication daisy chain communication protocol comprising: NXP, MAXIUM, TI, LTC communication protocols.
The analyzed daisy chain communication interaction information comprises: the device comprises a battery cell voltage, a module temperature, a balance state, signal quality, diagnosis information and the like, and the analyzed daisy chain communication interaction information is displayed on a screen.
And storing the analyzed daisy chain communication interaction information to an onboard SD card.
And generating a corresponding control instruction according to the analyzed daisy chain communication interaction information, and transmitting the control instruction to the daisy chain to control and configure the battery module, such as balanced opening and closing.
In S300 of this embodiment, as a preferred embodiment, a specific method of re-encoding may include:
analyzing and obtaining daisy chain communication interaction information from proprietary daisy chain communication signals according to methods provided by various AFE manufacturers, and obtaining physical information data such as voltage, temperature and the like; according to the requirements of CAN, Ethernet and other transmission modes, the codes are in the formats of CAN messages or Ethernet transmission information and the like, and are periodically sent.
The obtained daisy chain communication interaction information can be stored in a register of a processor of the terminal, and then processor software accesses the register to obtain corresponding data.
Fig. 3 is a schematic diagram of constituent modules of a daisy-chain communication conversion system for battery modules according to an embodiment of the present invention.
As shown in fig. 3, the daisy chain communication conversion system of battery modules provided in this embodiment may include the following modules: the device comprises a daisy chain signal acquisition module, a daisy chain information analysis module and a universal communication protocol signal coding module; wherein:
a daisy chain signal acquisition module that acquires daisy chain communication signals of one or more battery modules;
the daisy chain information analysis module integrates various daisy chain communication relay analysis chips and analyzes the obtained daisy chain communication signals into corresponding daisy chain communication interaction information one by one;
and the universal communication protocol signal coding module is used for recoding the daisy chain communication interaction information obtained by analysis into various universal protocol signals.
In this embodiment, as a preferred embodiment, the system may further include the following modules:
and the storage module is used for storing the daisy chain communication interaction information obtained by analysis.
In this embodiment, as a preferred embodiment, the system may further include the following modules:
and the terminal display module is used for directly displaying the daisy chain communication interaction information obtained by analysis.
In this embodiment, as a preferred embodiment, the system may further include the following modules:
and the universal signal output module is used for transmitting the various universal protocol signals to other communication terminals through corresponding communication interfaces for display.
In this embodiment, as a preferred embodiment, the plurality of general protocol signals are forwarded to other communication terminals for display through corresponding communication interfaces such as a CAN communication interface, a serial communication interface, an ethernet communication interface, and/or a USB communication interface.
An embodiment of the present invention provides a terminal, including a memory, a processor, and a program stored in the memory and executable on the processor, where the processor is configured to execute any one of the above methods or operate any one of the above systems when executing the program.
In the above embodiment, optionally, the terminal is an embedded software and hardware platform; a memory for storing an embedded software program; a memory, which may include a volatile memory (RAM), such as a random-access memory (RAM), a static random-access memory (SRAM), etc.; the memory may also comprise a non-volatile memory, such as a flash memory. The memory is used to store embedded software programs (e.g., applications, functional modules, etc. that implement the above-described methods), etc., which may be stored in one or more memories in a partitioned manner. And the embedded software programs, data, etc. described above may be called by the processor.
The software programs, etc. described above may be stored in one or more memories in partitions. And the software programs, data, etc. described above may be called by the processor.
And the processor is used for executing the embedded software program stored in the memory so as to realize the steps of the method related to the embodiment. Reference may be made in particular to the description relating to the preceding method embodiment.
The processor and the memory may be separate structures or may be an integrated structure integrated together. When the processor and the memory are separate structures, the memory, the processor may be coupled by a bus.
The daisy chain communication conversion method, the system and the terminal for the battery module according to the embodiments of the present invention solve the problem that the information of the proprietary daisy chain communication protocol cannot be directly read in the prior art, and realize a general analysis technique for the proprietary daisy chain communication protocol and information presentation between the daisy chain communication protocol and various general communication protocols while ensuring the advantages of low cost and small size of the existing daisy chain communication protocol.
It should be noted that, the steps in the method provided by the present invention may be implemented by using corresponding modules, devices, units, and the like in the system, and those skilled in the art may implement the composition of the system by referring to the technical solution of the method, that is, the embodiment in the method may be understood as a preferred example for constructing the system, and will not be described herein again.
The invention may be practiced by any technique known in the art.
Those skilled in the art will appreciate that, in addition to implementing the system and its various devices provided by the present invention in embedded software program code, the system and its various devices provided by the present invention can be implemented with the same functionality in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers and the like, all by logically programming method steps. Therefore, the system and various devices thereof provided by the present invention can be regarded as a hardware component, and the devices included in the system and various devices thereof for realizing various functions can also be regarded as structures in the hardware component; means for performing the functions may also be regarded as structures within both software modules and hardware components for performing the methods.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (10)
1. A daisy chain communication conversion method for battery modules is characterized by comprising the following steps:
acquiring daisy chain communication signals of one or more battery modules;
analyzing the obtained daisy chain communication signals into corresponding daisy chain communication interaction information one by utilizing an information analysis module integrated with various daisy chain communication relay analysis chips;
and directly outputting the daisy chain communication interaction information obtained by analysis, or coding the daisy chain communication interaction information into various universal communication protocol signals and outputting the signals through corresponding universal communication protocol ports.
2. The battery module daisy chain communication conversion method according to claim 1, wherein the communication protocol of the daisy chain communication comprises: NXP, MAXIUM, TI, and LTC communication protocols.
3. The battery module daisy chain communication conversion method of claim 1, wherein the plurality of common communication protocols comprise: CAN protocol, serial port protocol, Ethernet protocol and USB protocol.
4. The battery module daisy chain communication conversion method of claim 1, wherein the recoding comprises:
and acquiring corresponding physical information data from the daisy chain communication interaction information obtained by analysis, coding the physical information data into a corresponding message format or an information transmission format according to the requirement of a universal communication protocol transmission mode, and periodically transmitting the message format or the information transmission format to obtain a corresponding universal communication protocol signal.
5. The battery module daisy chain communication conversion method according to any one of claims 1 to 4, further comprising any one or more of the following:
-storing the daisy chain communication interaction information obtained by parsing;
and generating a control signal according to the daisy chain communication interaction information, transmitting the control signal to the daisy chain, and controlling and configuring the corresponding battery module.
6. The battery module daisy chain communication conversion method according to any one of claims 1 to 4, further comprising:
and displaying the daisy chain communication interaction information which is directly output through a display terminal.
7. The battery module daisy chain communication conversion method according to any one of claims 1 to 4, further comprising any one of:
-forwarding the re-encoded plurality of generic communication protocol signals to other communication terminals via corresponding generic communication protocol ports;
-forwarding the re-encoded multiple generic communication protocol signals to other communication terminals through corresponding generic communication protocol ports and displaying the same.
8. A daisy chain communication conversion system for battery modules, comprising:
a daisy chain signal acquisition module that acquires daisy chain communication signals of one or more battery modules;
the daisy chain information analysis module integrates various daisy chain communication relay analysis chips and analyzes the obtained daisy chain communication signals into corresponding daisy chain communication interaction information one by one;
and the universal communication protocol signal coding module is used for recoding the daisy chain communication interaction information obtained by analysis into various universal protocol signals.
9. The battery module daisy chain communication conversion system of claim 8, further comprising any one or more of the following modules:
-a storage module for storing the daisy chain communication interaction information obtained by parsing;
-a terminal display module for directly displaying the daisy chain communication interaction information obtained by parsing;
-a generic signal output module which forwards said plurality of generic protocol signals to other communication terminals via the respective communication interfaces for display.
10. A terminal comprising a memory, a processor and a program stored on the memory and executable on the processor, wherein the program when executed by the processor is operable to perform the method of any one of claims 1 to 7 or to operate the system of any one of claims 8 to 9.
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| CN111775769A (en) * | 2020-06-28 | 2020-10-16 | 联合汽车电子有限公司 | Battery management system and method |
| CN213987484U (en) * | 2020-12-21 | 2021-08-17 | 上海金脉电子科技有限公司 | Protocol switching board and battery management system |
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