CN107678771A - A kind of method for optimizing battery management system online upgrading - Google Patents
A kind of method for optimizing battery management system online upgrading Download PDFInfo
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- CN107678771A CN107678771A CN201710994608.4A CN201710994608A CN107678771A CN 107678771 A CN107678771 A CN 107678771A CN 201710994608 A CN201710994608 A CN 201710994608A CN 107678771 A CN107678771 A CN 107678771A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/24—Resetting means
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
- G06F11/0751—Error or fault detection not based on redundancy
- G06F11/0754—Error or fault detection not based on redundancy by exceeding limits
- G06F11/0757—Error or fault detection not based on redundancy by exceeding limits by exceeding a time limit, i.e. time-out, e.g. watchdogs
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/30—Monitoring
- G06F11/3003—Monitoring arrangements specially adapted to the computing system or computing system component being monitored
- G06F11/3013—Monitoring arrangements specially adapted to the computing system or computing system component being monitored where the computing system is an embedded system, i.e. a combination of hardware and software dedicated to perform a certain function in mobile devices, printers, automotive or aircraft systems
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/30—Monitoring
- G06F11/3055—Monitoring arrangements for monitoring the status of the computing system or of the computing system component, e.g. monitoring if the computing system is on, off, available, not available
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Abstract
The invention discloses a kind of method for optimizing battery management system online upgrading, which includes multiframe data transfer and encapsulation, the diagnosis of pre-programming phase, programming phases realization, software general frame, the design of software and test and interpretation of result；Because the new-energy automobile industry development time is short, a specification is not yet formed to the software upgrading of battery bag internal controller, battery management system producer develops the Bootloader based on CAN accordingly according to oneself master and slave control controller, realizes on-line software updating.The beneficial effects of the invention are as follows：Self-defined communications protocol is abandoned, using international, the ISO15765 agreements based on CAN, makes communication more stable, and meet the demand of versatility；Upgrade function is embedded into the inline diagnosis function of battery management system based on ISO15765 diagnostic datas communication protocol, realizes upgrading, the integration of diagnostic system, networking；The sequential control and flow control that transmitting message is standardized in escalation process, improve the reliability of message transmissions.
Description
Technical field
The present invention relates to the mode of online upgrading, more particularly to a kind of method for optimizing battery management system online upgrading.
Background technology
Existing technical parameter and standard have lacked, also BMS (the battery management systems without authoritative institution to manufacturer production
System) authoritative detection is carried out, this is the quagmire in current domestic BMS markets, result in the very different of BMS products, it is difficult to large area
Promote.Meanwhile many automobile vendors domestic at present and battery PACK enterprises are insufficient for BMS understanding of importance, as long as thinking
Each cell core can be chained, it is ensured that vehicle is run, its security is left things to chance, in BMS buyings simply
Low price is pursued, to ask the signing of contract, some bad BMS suppliers only reduce BMS functional parameters or simply castrate part
Function, so as to bury potential safety hazard, this is also the irresponsibility and injury to whole industry.Unified industry is only established as early as possible
Standard, the manufacturer for not meeting market demands is suppressed, establish sound detection architecture, battery management system and new-energy automobile are
The future of sustainable development can be possessed, this is also all multi-vendor and demand of consumer.
The content of the invention
The purpose of the present invention is to develop a kind of energy to realize upgrading, the integration of diagnostic system, the battery management of networking
The mode of system online upgrading.
The present invention technical solution be：A kind of method for optimizing battery management system online upgrading, the optimization electricity
The mode of pond management system online upgrading includes：Multiframe data transfer and encapsulation, the diagnosis of pre-programming phase, programming phases are real
The existing, design of software general frame, software and test and interpretation of result.
Preferably, the multiframe data transfer includes with encapsulation process：
Host computer reads S19 files (recordable paper), by S-Record document analysis into Hex files；Based on ISO15765
Data transfer rule, the data of transmission by the way of PC ends host computer is transmitted using multiframe, will be solved more than 6 or 7 bytes
The data in HEX files after analysis are divided into multiframe transmission, the first frame (FF) are sent first, after being controlled by flow control (FC)
The each traffic volume and time interval of continuous frame (CF), having sequence number to each CF frames, (0 arrives F numbering cycles, first next number
Except for 1)；FF defines the maximum length of data, and slave (master controller) is verified according to the length of data, verifies data
Integrality, feed back corresponding DTC；Data transfer rule according to ISO15765 greatly improve message order and
Accuracy；
More frame data encapsulate packing algorithm：Statistics will send the size databyte of amount of bytes first, then calculate frame number
Frame_Amount is measured, if not integer takes its integer value to add one again；Next circulation packing number is calculated, if not integer,
Its value rounds adds one again；Transmission message is started the cycle over, and records and cycles through number, a cycle has been sent and counting is subtracted one,
Sent at one in the cycle, record the counting per frame message, often send a frame, record number adds one, until record number is added to 16, one
Individual end cycle, into next transmission cycle, cycle through, until it is that 0 i.e. data are sent to cycle through record number；
The mode transmitted according to multiframe, the first frame can only carry the data of 6 bytes, and subsequent frame carries the number of 7 bytes
According to, then need pack frame quantity following manner calculate：
Frame_Amount=(databyte+1)/7
Using 0-F, as cycle period, the calculation formula for carrying out circulation packing number is totally 16 frame data：
Fcycnum=(databyte+1)/(16*7)
Fcycnum=(databyte+1)/(16*7)+1.
Preferably, the diagnosis process of the pre-programming phase includes：
Pre-programming phase in program renewal process is the preparation to programming phases, to enter extension in this stage
Conversation modes terminate the detection to DTC, terminate the communication etc. of normal message, to ensure normally entering for program downloads stage
OK；
It is as follows that pre-programming phase diagnostic service holds step：
Step 1, mode of extension request (02 10 03) is sent, sending method is functional addressing, makes to own in battery bag
ECU enters under mode of extension, because being given instructions by telegraph on ECU mono- under default mode, needs to enter row mode to ECU this moment and redirects, jumps
Go to the diagnostic service such as executive termination DTC under mode of extension；
Step 2, diagnosis online service (0 2 3E 80), this design, which uses, to be sent once every 3S to ensure that ECU is in
Non-default pattern, Normal Diagnosis session is maintained, if ECU does not receive diagnosis message in 5 seconds, ECU will recall to default mode automatically；
Step 3, which is sent, terminates DTC setting services (02 85 10) so that ECU stops detecting DTC, prevention in bag
Unusual failure code produces under deagnostic communication mode again；
Step 4, Control on Communication service request (03 28 00 01) is carried out, for terminating proper communication, ensured under data
Transmission rate during load is to avoid being disturbed.
Preferably, the programming phases implementation process includes：
Programming phases will primarily make ECU enter programming conversation modes, then could carry out subsequent download work to ECU unblocks
Make；Three sections of programs are mainly downloaded, download erasing program first, write-in program is being downloaded, is finally downloading application program；End of transmission
The data transmitted are verified, ECU resetted afterwards finally；The execution step of diagnostic service in programming phases is such as
Under：
Step 1, programming mode session request (02 10 02) so that ECU enters under programming mode, can enter under line program
Service is carried, still host computer online service is sent every 3s to maintain diagnostic session pattern under this pattern；
Step 2, secure access service perform (27), and ECU is under safeguard protection state, need to unlock the same ability
Carry out data download；
Step 3, request download (the * * * * * * of * * * * 34 00 33), inform that ECU will send the initial address of data
With data volume size, required initial address is now taken out from S19 files, and calculate the data total amount to be sent
Data are transmitted by step 4, transmission data (the * * of * * * * 36) according to host-host protocol, should now be incited somebody to action
The application layer data to be sent in S19 files adds transport layer protocol control information in case packing transmission；
Step 5, (01 37) are exited in request transmission, after the completion of transmitting data transfer, to be sent request transmission and be exited clothes
Transmission is exited in business；
Step 6, ECU reset (02 11 01), and download program simultaneously resets after verifying successfully to ECU.
Preferably, the software general frame process includes：
Slave computer software is mainly made up of application layer and FBL layers (Bootloader) two parts；FBL, which is used to update, to be applied
Layer, its code focus primarily on code protection area, because FBL is placed on code protection area, ensure that code is never destroyed, FBL is needed
To be solidificated in by BDM in FLASH；Application layer is used to deposit application layer program, and writing with a brush dipped in Chinese ink instrument by FBL and host computer is carried out more
Newly；It can ensure user during application layer code is updated by using this software architecture, occur resetting suddenly, power
During the abnormal and abnormal conditions such as upper computer software Communications failure, the erasable mistakes of Flash, the ECU in battery bag will not be locked,
Software is updated after re-powering by host computer to remain to continue to update application layer code；
FBL layers mainly include hardware initialization, internal memory mapping, host-host protocol, Flash erasable, diagnostic service and locking etc.
Function；
Diagnostic horizon：All download dependent diagnostic services, it is as shown in the table；
Transport layer：ISO15765-2 transport layer protocols；
Drive layer：The CAN drivings of minimum, all bottom hardware relevant portions, Flash Driver interface；
Preferably, the design process of the software includes：
Software memory maps：Using FreeScale MC9S12XET256 microcontrollers, Bootloader should be placed on by
In the Flash of protection, but not all Flash can set protection, so being typically placed in 0xc000~0xfeff sections
It is interior；
ROM_C000=READ_ONLY DATA_NEAR IBCC_NEAR 0xC000 TO 0xFF0F；
PAGE_FE=READ_ONLY DATA_FAR IBCC_FAR 0xFE8000 TO 0xFEBFFF；
APPL_VECT_TABLE_SEG=READ_ONLY 0x007F10 TO 0x007FFF；
ROM_VEC_TABLE=READ_ONLY 0xFF10 TO 0xFFFF；
RAM_CPU=READ_WRITE 0x2000 TO 0x39FF；
USERSTACK=NO_INIT 0x3A00 TO 0x3FFF.
ECU workflows：
Step 1, flow is initialized, after ECU resets, before main program is called, into Start12.c source files.Perform
Initialization function, the operation of completion empty ram space, and initialization data is copied to RAM etc. from ROM；
Step 2, electrifying startup flow, ECU it is upper electricity or reset after, first carry out some basic initialization operations, further according to
External programming request is whether there is to determine to enter Bootloader or application program.One wait timer is set, in wait
In the case that timer is not timed-out, if receiving Stay-In-Boot CAN Message, ECU is rested on
In Bootloader；If wait timer are expired, and application program is effective, then into application program.Can so have
Effect avoids occurring surprisingly leading to not brush news again during more new procedures, ensure that the stability of program；
Step 3, major cycle flow, after ECU enters Bootloader, global variable waitTime is set, enters receive every time
Hair interrupts subtracts 1 by waitTime, and waitTime value is constantly detected in for circulations of main program, if zero, is then jumped to
Application program launching address, otherwise continue to detect in CAN network whether there is data receivable.In order to ensure the data in CAN network
Can completely it receive, waitTime is set very big by the design, is arranged to 5000；
Program writes with a brush dipped in Chinese ink flow instance：
Preferably, the test and interpretation of result process include：
The Bootloader of realization is burnt in FreeScale MC9S12XET256 single-chip microcomputers with BDM programming tools.
Sent by host computer and write " * .s19 " files, data flow being sent in single-chip microcomputer by CAN network, and run for completion.
Multiple burning does not occur the situation of loss of data, can intactly decode the data flow of host computer transmission, and after burning
Application program can be successfully downloaded, application program energy normal work, can also continue the diagnosis request of response PC ends host computer.
The beneficial effects of the invention are as follows：Self-defined communications protocol is abandoned, using international, based on CAN
ISO15765 agreements, make communication more stable, and meet the demand of versatility；Based on ISO15765 diagnostic data communication protocols
Upgrade function is embedded into the inline diagnosis function of battery management system, realizes upgrading, the integration of diagnostic system, network
Change；The sequential control and flow control that transmitting message is standardized in escalation process, improve the reliability of message transmissions.
Brief description of the drawings
Fig. 1 is that host computer of the present invention downloads flow chart.
Fig. 2 is the first frame data transmission figure of the invention.
Fig. 3 is the transmission figure of flow control frames of the present invention.
Fig. 4 is the transmission figure of subsequent frame of the present invention.
Fig. 5 is the test data frame figure that the present invention encapsulates.
Fig. 6 is slave computer software Organization Chart of the present invention.
Fig. 7 is FBL Organization Charts of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Refer to shown in Fig. 1-7, a kind of method for optimizing battery management system online upgrading, optimization battery management system exists
The mode of line upgrading includes：Multiframe data transfer is realized with encapsulation, the diagnosis of pre-programming phase, programming phases, software totality frame
Structure, the design of software and test and interpretation of result.
Preferably, multiframe data transfer includes with encapsulation process：
Host computer reads S19 files (recordable paper), by S-Record document analysis into Hex files；Based on ISO15765
Data transfer rule, the data of transmission by the way of PC ends host computer is transmitted using multiframe, will be solved more than 6 or 7 bytes
The data in HEX files after analysis are divided into multiframe transmission, the first frame (FF) are sent first, after being controlled by flow control (FC)
The each traffic volume and time interval of continuous frame (CF), having sequence number to each CF frames, (0 arrives F numbering cycles, first next number
Except for 1)；FF defines the maximum length of data, and slave (master controller) is verified according to the length of data, verifies data
Integrality, feed back corresponding DTC；Data transfer rule according to ISO15765 greatly improve message order and
Accuracy；
More frame data encapsulate packing algorithm：Statistics will send the size databyte of amount of bytes first, then calculate frame number
Frame_Amount is measured, if not integer takes its integer value to add one again；Next circulation packing number is calculated, if not integer,
Its value rounds adds one again；Transmission message is started the cycle over, and records and cycles through number, a cycle has been sent and counting is subtracted one,
Sent at one in the cycle, record the counting per frame message, often send a frame, record number adds one, until record number is added to 16, one
Individual end cycle, into next transmission cycle, cycle through, until it is that 0 i.e. data are sent to cycle through record number；
The mode transmitted according to multiframe, the first frame can only carry the data of 6 bytes, and subsequent frame carries the number of 7 bytes
According to, then need pack frame quantity following manner calculate：
Frame_Amount=(databyte+1)/7
Using 0-F, as cycle period, the calculation formula for carrying out circulation packing number is totally 16 frame data：
Fcycnum=(databyte+1)/(16*7)
Fcycnum=(databyte+1)/(16*7)+1.
Preferably, the diagnosis process of pre-programming phase includes：
Pre-programming phase in program renewal process is the preparation to programming phases, to enter extension in this stage
Conversation modes terminate the detection to DTC, terminate the communication etc. of normal message, to ensure normally entering for program downloads stage
OK；
It is as follows that pre-programming phase diagnostic service holds step：
Step 1, mode of extension request (02 10 03) is sent, sending method is functional addressing, makes to own in battery bag
ECU enters under mode of extension, because being given instructions by telegraph on ECU mono- under default mode, needs to enter row mode to ECU this moment and redirects, jumps
Go to the diagnostic service such as executive termination DTC under mode of extension；
Step 2, diagnosis online service (0 2 3E 80), this design, which uses, to be sent once every 3S to ensure that ECU is in
Non-default pattern, Normal Diagnosis session is maintained, if ECU does not receive diagnosis message in 5 seconds, ECU will recall to default mode automatically；
Step 3, which is sent, terminates DTC setting services (02 85 10) so that ECU stops detecting DTC, prevention in bag
Unusual failure code produces under deagnostic communication mode again；
Step 4, Control on Communication service request (03 28 00 01) is carried out, for terminating proper communication, ensured under data
Transmission rate during load is to avoid being disturbed.
Preferably, programming phases implementation process includes：
Programming phases will primarily make ECU enter programming conversation modes, then could carry out subsequent download work to ECU unblocks
Make；Three sections of programs are mainly downloaded, download erasing program first, write-in program is being downloaded, is finally downloading application program；End of transmission
The data transmitted are verified, ECU resetted afterwards finally；The execution step of diagnostic service in programming phases is such as
Under：
Step 1, programming mode session request (02 10 02) so that ECU enters under programming mode, can enter under line program
Service is carried, still host computer online service is sent every 3s to maintain diagnostic session pattern under this pattern；
Step 2, secure access service perform (27), and ECU is under safeguard protection state, need to unlock the same ability
Carry out data download；
Step 3, request download (the * * * * * * of * * * * 34 00 33), inform that ECU will send the initial address of data
With data volume size, required initial address is now taken out from S19 files, and calculate the data total amount to be sent
Data are transmitted by step 4, transmission data (the * * of * * * * 36) according to host-host protocol, should now be incited somebody to action
The application layer data to be sent in S19 files adds transport layer protocol control information in case packing transmission；
Step 5, (01 37) are exited in request transmission, after the completion of transmitting data transfer, to be sent request transmission and be exited clothes
Transmission is exited in business；
Step 6, ECU reset (02 11 01), and download program simultaneously resets after verifying successfully to ECU.
Preferably, software general frame process includes：
Slave computer software is mainly made up of application layer and FBL layers (Bootloader) two parts；FBL, which is used to update, to be applied
Layer, its code focus primarily on code protection area, because FBL is placed on code protection area, ensure that code is never destroyed, FBL is needed
To be solidificated in by BDM in FLASH；Application layer is used to deposit application layer program, and writing with a brush dipped in Chinese ink instrument by FBL and host computer is carried out more
Newly；It can ensure user during application layer code is updated by using this software architecture, occur resetting suddenly, power
During the abnormal and abnormal conditions such as upper computer software Communications failure, the erasable mistakes of Flash, the ECU in battery bag will not be locked,
Software is updated after re-powering by host computer to remain to continue to update application layer code；
FBL layers mainly include hardware initialization, internal memory mapping, host-host protocol, Flash erasable, diagnostic service and locking etc.
Function；
Diagnostic horizon：All download dependent diagnostic services, it is as shown in the table；
Transport layer：ISO15765-2 transport layer protocols；
Drive layer：The CAN drivings of minimum, all bottom hardware relevant portions, Flash Driver interface.
Preferably, the design process of the software includes：
Software memory maps：Using FreeScale MC9S12XET256 microcontrollers, Bootloader should be placed on by
In the Flash of protection, but not all Flash can set protection, so being typically placed in 0xc000~0xfeff sections
It is interior；
ROM_C000=READ_ONLY DATA_NEAR IBCC_NEAR 0xC000 TO 0xFF0F；
PAGE_FE=READ_ONLY DATA_FAR IBCC_FAR 0xFE8000 TO 0xFEBFFF；
APPL_VECT_TABLE_SEG=READ_ONLY 0x007F10 TO 0x007FFF；
ROM_VEC_TABLE=READ_ONLY 0xFF10 TO 0xFFFF；
RAM_CPU=READ_WRITE 0x2000 TO 0x39FF；
USERSTACK=NO_INIT 0x3A00 TO 0x3FFF.
ECU workflows：
Step 1, flow is initialized, after ECU resets, before main program is called, into Start12.c source files.Perform
Initialization function, the operation of completion empty ram space, and initialization data is copied to RAM etc. from ROM；
Step 2, electrifying startup flow, ECU it is upper electricity or reset after, first carry out some basic initialization operations, further according to
External programming request is whether there is to determine to enter Bootloader or application program.One wait timer is set, in wait
In the case that timer is not timed-out, if receiving Stay-In-Boot CAN Message, ECU is rested on
In Bootloader；If wait timer are expired, and application program is effective, then into application program.Can so have
Effect avoids occurring surprisingly leading to not brush news again during more new procedures, ensure that the stability of program；
Step 3, major cycle flow, after ECU enters Bootloader, global variable waitTime is set, enters receive every time
Hair interrupts subtracts 1 by waitTime, and waitTime value is constantly detected in for circulations of main program, if zero, is then jumped to
Application program launching address, otherwise continue to detect in CAN network whether there is data receivable.In order to ensure the data in CAN network
Can completely it receive, waitTime is set very big by the design, is arranged to 5000；
Program writes with a brush dipped in Chinese ink flow instance：
Preferably, test and interpretation of result process include：
The Bootloader of realization is burnt in FreeScale MC9S12XET256 single-chip microcomputers with BDM programming tools.
Sent by host computer and write " * .s19 " files, data flow being sent in single-chip microcomputer by CAN network, and run for completion.
Multiple burning does not occur the situation of loss of data, can intactly decode the data flow of host computer transmission, and after burning
Application program can be successfully downloaded, application program energy normal work, can also continue the diagnosis request of response PC ends host computer.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any mark in claim should not be considered as to the involved claim of limitation.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that those skilled in the art should for clarity
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It is appreciated that other embodiment.
Claims (7)
- A kind of 1. method for optimizing battery management system online upgrading, it is characterised in that the optimization battery management system is online The mode of upgrading includes：Multiframe data transfer and encapsulation, the diagnosis of pre-programming phase, programming phases realization, software general frame, The design and test and interpretation of result of software.
- 2. a kind of method for optimizing battery management system online upgrading according to claim 1, it is characterised in that described more Frame data transmission includes with encapsulation process：Host computer reads S19 files (recordable paper), by S-Record document analysis into Hex files；Number based on ISO15765 According to transmission rule, the data of transmission are more than 6 or 7 bytes, and PC ends host computer is by the way of multiframe transmission, after will parsing HEX files in data be divided into multiframe transmission, send the first frame (FF) first, subsequent frame controlled by flow control (FC) (CF) each traffic volume and time interval, having sequence number to each CF frames, (0 arrives F numbering cycles, except first next number For 1)；FF defines the maximum length of data, and slave (master controller) is verified according to the length of data, verifies the complete of data Whole property, feeds back corresponding DTC；Data transfer rule according to ISO15765 greatly improves the order of message and accurate Property；More frame data encapsulate packing algorithm：Statistics will send the size databyte of amount of bytes first, then calculate number of frames Frame_Amount, if not integer takes its integer value to add one again；Next circulation packing number is calculated, if not integer, its Value rounds adds one again；Transmission message is started the cycle over, and records and cycles through number, a cycle has been sent and counting is subtracted one, One sent in the cycle, recorded the counting per frame message, often sent a frame, and record number adds one, until record number is added to 16, one End cycle, into next transmission cycle, cycle through, until it is that 0 i.e. data are sent to cycle through record number；The mode transmitted according to multiframe, the first frame can only carry the data of 6 bytes, and subsequent frame carries the data of 7 bytes, then The quantity following manner of packing frame is needed to calculate：Frame_Amount=(databyte+1)/7Using 0-F, as cycle period, the calculation formula for carrying out circulation packing number is totally 16 frame data：Fcycnum=(databyte+1)/(16*7)Fcycnum=(databyte+1)/(16*7)+1.
- 3. a kind of method for optimizing battery management system online upgrading according to claim 1, it is characterised in that described pre- The diagnosis process of programming phases includes：Pre-programming phase in program renewal process is the preparation to programming phases, to enter extension session in this stage Pattern terminates the detection to DTC, terminates the communication etc. of normal message, to ensure being normally carried out for program downloads stage；It is as follows that pre-programming phase diagnostic service holds step：Step 1, mode of extension request (02 10 03) is sent, sending method is functional addressing, makes in battery bag all ECU all Into under mode of extension, because being given instructions by telegraph on ECU mono- under default mode, need to enter row mode to ECU this moment and redirect, jump to expansion The diagnostic service such as executive termination DTC under exhibition pattern；Step 2, diagnosis online service (0 2 3E 80), this design, which uses, to be sent once every 3S to ensure that ECU is in non-silent Recognize pattern, maintain Normal Diagnosis session, if ECU does not receive diagnosis message in 5 seconds, ECU will recall to default mode automatically；Step 3, which is sent, terminates DTC setting services (02 85 10) so that ECU stops detecting DTC in bag, and prevention is examined again Unusual failure code produces under disconnected communication mode；Step 4, Control on Communication service request (03 28 00 01) is carried out, for terminating proper communication, when ensureing that data are downloaded Transmission rate to avoid being disturbed.
- A kind of 4. method for optimizing battery management system online upgrading according to claim 1, it is characterised in that the volume Journey stage implementation process includes：Programming phases will primarily make ECU enter programming conversation modes, then could carry out subsequent download work to ECU unblocks；It is main Three sections of programs are downloaded, download erasing program first, write-in program is being downloaded, is finally downloading application program；Will after end of transmission The data transmitted are verified, finally ECU resetted；The execution step of diagnostic service in programming phases is as follows：Step 1, programming mode session request (02 10 02) so that ECU enters under programming mode, can carry out download program clothes It is engaged in, still host computer online service is sent every 3s to maintain diagnostic session pattern under this pattern；Step 2, secure access service perform (27), and ECU is under safeguard protection state, and need to unlock the same to be carried out Data are downloaded；Step 3, request download (33****** of * * * * 34 00), inform ECU to send data initial address and data volume it is big It is small, required initial address is now taken out from S19 files, and calculate the data total amount to be sentData are transmitted by step 4, transmission data (* * * * 36**) according to host-host protocol, now should be by S19 files The middle application layer data to be sent adds transport layer protocol control information in case packing transmission；Step 5, (01 37) are exited in request transmission, after the completion of transmitting data transfer, to be sent request transmission and be exited service and move back Go out transmission；Step 6, ECU reset (02 11 01), and download program simultaneously resets after verifying successfully to ECU.
- 5. a kind of method for optimizing battery management system online upgrading according to claim 1, it is characterised in that described soft Part general frame process includes：Slave computer software is mainly made up of application layer and FBL layers (Bootloader) two parts；FBL is used to update application layer, its Code focuses primarily on code protection area, because FBL is placed on code protection area, ensures that code is never destroyed, FBL needs to pass through BDM is solidificated in FLASH；Application layer is used to deposit application layer program, and writing with a brush dipped in Chinese ink instrument with host computer by FBL is updated；It is logical User can be ensured during application layer code update using this software architecture by crossing, appearance reset suddenly, abnormal electrical power supply, With upper computer software Communications failure, during the abnormal conditions such as the erasable mistakes of Flash, the ECU in battery bag will not be locked, again on Software is updated after electricity by host computer to remain to continue to update application layer code；FBL layers mainly include the functions such as hardware initialization, internal memory mapping, host-host protocol, Flash erasable, diagnostic service and locking.
- A kind of 6. method for optimizing battery management system online upgrading according to claim 1, it is characterised in that the software Design process include：Software memory maps：Using FreeScale MC9S12XET256 microcontrollers, Bootloader should be placed on protected Flash in, but not all Flash can set protection, so being typically placed in 0xc000~0xfeff sections；ROM_C000=READ_ONLY DATA_NEAR IBCC_NEAR 0xC000 TO 0xFF0F；PAGE_FE=READ_ONLY DATA_FAR IBCC_FAR 0xFE8000 TO 0xFEBFFF；APPL_VECT_TABLE_SEG=READ_ONLY 0x007F10 TO 0x007FFF；ROM_VEC_TABLE=READ_ONLY 0xFF10 TO 0xFFFF；RAM_CPU=READ_WRITE 0x2000 TO 0x39FF；USERSTACK=NO_INIT 0x3A00 TO 0x3FFF；ECU workflows：Step 1, flow is initialized, after ECU resets, before main program is called, into Start12.c source files.Perform initial Change function, the operation of completion empties ram space, initialization data is copied to RAM etc. from ROM；Step 2, electrifying startup flow, after the upper electricity of ECU or reset, some basic initialization operations are first carried out, further according to whetheing there is External programming is asked to determine to enter Bootloader or application program.One wait timer is set, in wait timer In the case of being not timed-out, if receiving Stay-In-Boot CAN a Message, ECU rests on Bootloader In；If wait timer are expired, and application program is effective, then into application program.So it is possible to prevente effectively from renewal Occur surprisingly leading to not brush news again during program, ensure that the stability of program；Step 3, major cycle flow, after ECU enters Bootloader, global variable waitTime is set, entered every time in transmitting-receiving It is disconnected that waitTime is subtracted 1, waitTime value is constantly detected in for circulations of main program, if zero, then jumps to application Program starts address, otherwise continues to detect in CAN network whether there is data receivable.In order to which the data ensured in CAN network can Complete to receive, waitTime is set very big, is arranged to 5000 by the design；
- A kind of 7. method for optimizing battery management system online upgrading according to claim 1, it is characterised in that the survey Examination and interpretation of result process include：The Bootloader of realization is burnt in FreeScale MC9S12XET256 single-chip microcomputers with BDM programming tools.Pass through Host computer sends and writes " * .s19 " files, data flow being sent in single-chip microcomputer by CAN network, and run for completion.Repeatedly Burning does not occur the situation of loss of data, can intactly decode the data flow of host computer transmission, and can be into after burning yet Work(downloads application program, application program energy normal work, can also continue the diagnosis request of response PC ends host computer.
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