CN109308799A - The wired and wireless compatible means of communication and device for battery core monitoring device - Google Patents
The wired and wireless compatible means of communication and device for battery core monitoring device Download PDFInfo
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- CN109308799A CN109308799A CN201811345665.0A CN201811345665A CN109308799A CN 109308799 A CN109308799 A CN 109308799A CN 201811345665 A CN201811345665 A CN 201811345665A CN 109308799 A CN109308799 A CN 109308799A
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- 238000004891 communication Methods 0.000 title claims abstract description 80
- 238000012806 monitoring device Methods 0.000 title claims abstract description 13
- 238000012544 monitoring process Methods 0.000 claims abstract description 61
- 238000000034 method Methods 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims abstract description 3
- 230000002093 peripheral effect Effects 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 abstract 2
- 230000005611 electricity Effects 0.000 description 8
- 238000002955 isolation Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000428 dust Substances 0.000 description 5
- 230000006855 networking Effects 0.000 description 4
- 238000013459 approach Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000000018 DNA microarray Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000002493 microarray Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C19/00—Electric signal transmission systems
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
Abstract
A kind of wired and wireless compatible means of communication for battery core monitoring device, process including exchanging signal between automobile BMS master/slave board, wireless telecommunications and wire communication are established simultaneously between main control module and battery pack monitoring module, main control module judges wireless communication signal quality, and when judging that wireless communication signal is of poor quality, using the transmission signal in wire communication.The device for realizing the above method includes multiple battery core monitoring circuits, and battery core monitoring unit respectively includes battery pack monitoring module, wireless communication module, signal conversion module；Battery core monitoring module is equipped with SPI port and Differencing communication port, the Differencing communication port of the battery core monitoring module of each battery core monitoring unit is interconnected by Differencing communication connector, and the Differencing communication port of the battery core monitoring module of each battery core monitoring unit and the Differencing communication port of the signal conversion module of each battery core monitoring unit are interconnected by Differencing communication connector.The present invention improves the communication reliability between automobile BMS plate.
Description
Technical field
It is especially a kind of for battery core monitoring device the present invention relates to electricity field more particularly to automotive electronic technology
The wired and wireless compatible means of communication and device.
Background technique
All equipped with BMS(battery management system on the new-energy automobiles such as electric car, oil-electric vehicle), it can mention
The utilization rate of high battery prevents battery from occurring overcharging and over-discharge.
Since new-energy automobile is equipped with high power motor, so that new-energy automobile is higher than biography in electromagnetic noise pollution
System automobile, and the communication scheme between existing BMS master/slave board uses daisy chain differential communication, is easy to be polluted by electromagnetic noise,
Communication reliability is lower.
Summary of the invention
For above-mentioned defect existing in the prior art, technical problem to be solved by the invention is to provide a kind of reliabilities
The high wired and wireless compatible means of communication for battery core monitoring device.
The wired and wireless compatible means of communication provided by the present invention for battery core monitoring device include one in master control
The process of signal is exchanged between module and battery pack monitoring module, wherein in the main control module and battery pack monitoring module
Between exchange signal during, establish wireless telecommunications and cable modem simultaneously between main control module and battery pack monitoring module
News, main control module judge wireless communication signal quality, and when judging that wireless communication signal is of poor quality, using in wire communication
Transmit signal.
The present invention also provides a kind of device for realizing the above method, the device includes at least one battery core monitoring electricity
Road, any one of battery core monitoring circuit respectively includes a battery pack monitoring module, any one of battery
Group monitoring module respectively includes a SPI signal PORT COM and a differential signal communication port, wherein at any one
In the described battery core monitoring circuit, the SPI signal PORT COM of the battery pack monitoring module respectively with a wireless sensing
The SPI signal PORT COM of device network module connects, the SPI signal PORT COM of the battery pack monitoring module again respectively with
The SPI signal PORT COM connection of one isolation serial peripheral equipment interface SPI differential communication module.
Further, the battery pack monitoring module is connect with a main control module.
Further, any one wireless sensor network module is respectively connected with wireless transmitter module and antenna.
Further, the number of battery core monitoring circuit is two or more, and any one of battery core monitors electricity
The differential signal communication port of battery pack monitoring module in road is connected respectively to the difference of another battery pack monitoring module
Signal communication port.
Specifically, heretofore described battery pack monitoring module, wireless sensor network module, isolation serial peripheral connect
Mouth SPI differential communication module and main control module are all made of known solution in the prior art.Those skilled in the art are
Through understanding, details are not described herein.For example, battery pack monitoring module uses the LTC6811 of LinearTechnology company production
Chip, wireless sensor network module use the LTC5800 chip of LinearTechnology company production, and serial peripheral is isolated
Interface SPI differential communication module uses the LTC6820 chip of LinearTechnology company production, and main control module uses
The control module that STM32 series microprocessor is constituted.
The working principle of the invention is: battery pack monitoring module and isolation serial peripheral equipment interface SPI differential communication module are adopted
With daisy chain form networking, wireless sensor network module is connected in wireless dust network network, wireless sensor network
Network module is communicated by its SPI interface and battery pack monitoring module, passes the message wirelessly received back battery pack by SPI connection
Monitoring module, then spread out of information via the daisy chain of battery pack monitoring module.Meanwhile on the SPI line of battery pack monitoring module
Another way SPI communication line in parallel is connected with serial peripheral equipment interface SPI differential communication module is isolated.This two-way SPI passes through master control
The gating command of module gates.When wireless communication environments are more severe, it is changed to twisted pair wire communication.Isolation serial peripheral connects
External differential signal is converted to SPI signal and is input to battery pack monitoring module by mouthful SPI differential communication module, then by this module
Data the isolation serial peripheral equipment interface SPI differential communication mould in next battery core monitoring circuit is sent in the form of differential signal
The differential signal entrance of block.
Wireless Dust network network has the networking of low-consumption wireless electricity convenient, is currently lowest power consumption in industry
The compatible wireless transducer products of IEEE802.15.4E.Entire radio net is made of more than two number destination nodes, institute
There is node that can receive and dispatch mutually, the data for eventually needing to processing are transported on processor.Such feature will make
System layout is very flexible, it is easy to accomplish the ad hoc network between each node.Data reliability more than 99.999% ensure that system
Reliability.
For battery pack monitoring module as from the medium between control plate and main control module, the SPI signal that will be received switchs to bit-
The sine wave signal of by-bit is issued by the coding form of difference.Main control module can be with the approach of free switching signal transmitting and receiving: by
The SPI signal that wireless sensor network module changes into after receiving, or it is straight by isolation serial peripheral equipment interface SPI differential communication module
The signal for the SPI that rigid line transmits was connected, once wired or wireless communication modes are by some special frequency channel noise jamming
Communication is caused to realize, the software in main control module can automatically switch to another communication, avoid whole system because communication is lost
It loses and collapses.Present invention optimizes traditional BMS communication modes, such safety measures are also that whole system reaches ASIL C
Security level plays the role of vital.
Detailed description of the invention
Fig. 1 is the signal of the wired and wireless compatible means of communication and device for battery core monitoring device of the invention
Figure.
Specific embodiment
The embodiment of the present invention is described in further detail below in conjunction with Detailed description of the invention, but the present embodiment is not used to limit
The system present invention, all that protection scope of the present invention should all be included in using similar structure and its similar variation of the invention, present invention
In pause mark indicate the relationship of sum.
As shown in Figure 1, the wired and wireless compatible means of communication for battery core monitoring device of the invention, including one
The process of signal is exchanged between main control module and battery pack monitoring module, wherein monitor in the main control module and battery pack
During exchanging signal between module, wireless telecommunications and wired are established simultaneously between main control module and battery pack monitoring module
Communication, main control module judge wireless communication signal quality, and when judging that wireless communication signal is of poor quality, using in wire communication
Transmission signal.
The present invention also provides a kind of device for realizing the above method, the device includes at least one battery core monitoring electricity
Road, any one of battery core monitoring circuit respectively includes a battery pack monitoring module U1, any one of electricity
Pond group monitoring module U1 respectively includes an a SPI signal PORT COM PortA and differential signal communication port PortB,
Wherein, in any one of battery core monitoring circuit, the SPI signal PORT COM of the battery pack monitoring module U1
PortA is respectively connect with the SPI signal PORT COM of a wireless sensor network module, the battery pack monitoring module U1
SPI signal PORT COM PortA the SPI signal of serial peripheral equipment interface SPI differential communication module U3 is respectively isolated with one again
PORT COM connection.
Further, the battery pack monitoring module U1 is connect with a main control module (not shown).
Further, any one wireless sensor network module is respectively connected with wireless transmitter module and antenna.
Further, the number of battery core monitoring circuit is two or more, and any one of battery core monitors electricity
The differential signal communication port PortB of battery pack monitoring module U1 in road is connected respectively to another battery pack monitoring module
The differential signal communication port PortB of U1.
In the present embodiment, battery pack monitoring module U1 uses the LTC6811 chip of LinearTechnology company production,
Wireless sensor network module uses the LTC5800 chip of LinearTechnology company production using U2, is isolated serial outer
If interface SPI differential communication module U3 uses the LTC6820 chip of LinearTechnology company production, main control module is used
The control module that STM32 series microprocessor is constituted.
The present embodiment adds wireless dust network form networking, the 2.4GHz comprising LTC5800 chip using daisy chain
The SPI of wireless network and LTC6820 chip turns 1Mbps differential communication, and LTC5800 chip, LTC6820 chip and battery pack monitor
Module LTC6811 combination.
The wireless dust network network information, will by the SPI interface and LTC6811 chip communication of LTC5800 chip
The message wirelessly received has SPI connection to pass LTC6811 microarray biochip back, then via LTC6811 chip daisy chain by information
Outflow.In parallel another way SPI communication line is connect with LTC6820 chip on the SPI line of LTC6811 chip simultaneously.This two-way SPI
It is gated in practical applications by the gating command of master control borad.When wireless communication environments are more severe, it is changed to wire communication.
External differential signal is converted to SPI signal input by LTC6820 chip by LTC6811 chip, then by the data of this module by
Daisy chain port B is sent to the LTC6820 chip difference entrance of next module in the form of differential signal.
Wireless Dust network has the networking of low-consumption wireless electricity convenient, is currently lowest power consumption in industry
IEEE802.15.4E is compatible with wireless transducer products.Entire radio net is made of several nodes its main feature is that all sections
Point can be received and dispatched mutually, and the data for eventually needing to processing are transported on processor.Such feature will make whole system cloth
Office is very flexible, it is easy to accomplish the ad hoc network between each node.It ensure that the reliable of system more than 99.999% data reliability
Property.
For LTC6820 chip as from the medium between control plate and main control module, the SPI signal that will be received switchs to bit-by-
The sine wave signal of bit is issued by the coding form of difference.Controller can be with the approach of free switching signal transmitting and receiving: by wireless
The SPI that the SPI signal or LTC6811 chip that module LTC5800 chip changes into after receiving directly are come by hard-wire transfer
Signal, once wired or wireless communication modes are caused communication to realize by some special frequency channel noise jamming, in main control module
Another communication can be automatically switched to by setting software, and whole system is avoided to collapse because of Communications failure.Present invention optimizes biographies
The BMS communication modes of system, such safety measures be also whole system reach ASIL C security level play it is most important
Effect.
For 1Mb differential communication, the communication of 1 meter of long harness can be supported between individual module.LTC6811 chip battery is adopted
Collect module for collected information, after switching to differential signal by LTC6820 chip by SPI, becomes by the isolation between single-point
Depressor is exported to peripheral control unit.Transformer possesses the isolation of highest 3750Vrms, it is sufficient to deal with current electric car 400V
The battery stagnation pressure of left and right.And it can satisfy the communication speed of wired 1Mbps.The magnetic coupling of transformer believes second level difference
Number signal is more clean and external radiated noise can be effectively reduced in the case where offer is dielectrically separated from.
Claims (5)
1. a kind of wired and wireless compatible means of communication for battery core monitoring device, including one in main control module and battery pack
The process of signal is exchanged between monitoring module, it is characterised in that: hand between the main control module and battery pack monitoring module
During changing signal, wireless telecommunications and wire communication, master control are established simultaneously between main control module and battery pack monitoring module
Module judges wireless communication signal quality, and when judging that wireless communication signal is of poor quality, is believed using the transmission in wire communication
Number.
2. a kind of device for realizing the wired and wireless compatible means of communication described in claim 1 for battery core monitoring device,
Circuit is monitored including at least one battery core, any one of battery core monitoring circuit respectively includes that a battery pack monitors mould
Block, any one of battery pack monitoring module respectively include that a SPI signal PORT COM and a differential signal are logical
Believe port, it is characterised in that: in any one of battery core monitoring circuit, the SPI of the battery pack monitoring module believes
Number PORT COM is respectively connect with the SPI signal PORT COM of a wireless sensor network module, the battery pack monitoring
The SPI signal communication of serial peripheral equipment interface SPI differential communication module is respectively isolated in the SPI signal PORT COM of module with one again
Port connection.
3. being used for the wired and wireless compatible means of communication and device of battery core monitoring device, feature as claimed in claim 2
Be: the battery pack monitoring module is connect with a main control module.
4. being used for the wired and wireless compatible means of communication and device of battery core monitoring device, feature as claimed in claim 2
Be: any one wireless sensor network module is respectively connected with wireless transmitter module and antenna.
5. being used for the wired and wireless compatible means of communication and device of battery core monitoring device, feature as claimed in claim 2
Be: the number of the battery core monitoring circuit is two or more, the battery pack in any one of battery core monitoring circuit
The differential signal communication port of monitoring module is connected respectively to the differential signal communication port of another battery pack monitoring module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811345665.0A CN109308799A (en) | 2018-11-13 | 2018-11-13 | The wired and wireless compatible means of communication and device for battery core monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811345665.0A CN109308799A (en) | 2018-11-13 | 2018-11-13 | The wired and wireless compatible means of communication and device for battery core monitoring device |
Publications (1)
| Publication Number | Publication Date |
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| CN109308799A true CN109308799A (en) | 2019-02-05 |
Family
ID=65221889
Family Applications (1)
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| CN201811345665.0A Withdrawn CN109308799A (en) | 2018-11-13 | 2018-11-13 | The wired and wireless compatible means of communication and device for battery core monitoring device |
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Application publication date: 20190205 |