CN106950457A - A kind of high pressure is connected electrically in line detecting method - Google Patents
A kind of high pressure is connected electrically in line detecting method Download PDFInfo
- Publication number
- CN106950457A CN106950457A CN201710128083.6A CN201710128083A CN106950457A CN 106950457 A CN106950457 A CN 106950457A CN 201710128083 A CN201710128083 A CN 201710128083A CN 106950457 A CN106950457 A CN 106950457A
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- CN
- China
- Prior art keywords
- main control
- control unit
- loop
- communication module
- high pressure
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
- G01R31/3842—Arrangements for monitoring battery or accumulator variables, e.g. SoC combining voltage and current measurements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/60—Electric or hybrid propulsion means for production processes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
Line detecting method, including main control unit, communication module, collecting unit are connected electrically in the invention discloses a kind of high pressure, the main control unit is connected with the collecting unit by communication module, its detecting step is：First, main control unit is communicated by communication module with sampling unit, sends a frame synchronization warning order, and sampling unit is received after order, is reset synchronizer trigger and is triggered synchronizing signal；2nd, sampling unit is detected after synchronizing signal, synchronize sampling, so as to obtain the Global Informations such as total voltage, monomer voltage, the loop current of synchronization, main control unit calculates total resistance of current loop according to information, and total resistance compares during by the resistance with dispatching from the factory, connect abnormal according to this to judge whether high tension loop has.The present invention is proposed a kind of communicated based on vehicle-mounted CAN and the synchronous acquisition of the total voltage of battery bag, loop total current is realized by hardware trigger, and framework is simple, with low cost, control is simple, substantially increases accuracy, the reliability of BMS systems.
Description
Technical field
The present invention relates to battery management system field, especially relate to a kind of high pressure and be connected electrically in line detecting method.
Background technology
In electrokinetic cell module, in order to ensure enough power performance, often battery pack constitutes height with electric machine controller
Voltage high-current loop.It is connection reliability problem in electric automobile fire event, many degree.Vehicle in the process of running,
Situations such as vibrating, impact under working condition, jumping, the contact resistance of each tie point can change.For a long time
Vibration, impact, jump etc. under the influence of, part tie point can be because oxidation, a variety of causes such as loosening and cause loose contact, even
Situation about coming off occurs.Tie point loose contact, or even situation about coming off directly result in contact resistance increase, the big electricity of high pressure
Flow back to road and be limited to vehicle high voltage, the wide dynamic range operating mode influence of high current, the connection of part contact resistance increase
Point meeting continuous heat accumulation amount because of flowing through for high-voltage great-current, and accelerate the aging of tie point until heating is caught fire.This is asked
The serious development for threatening personal security, hindering new-energy automobile of topic.
The content of the invention
In this programme, it is proposed that a kind of inline diagnosis method electrically connected for high-voltage battery system high pressure.Its main body
Part is mainly based upon the synchronous acquisition that the total voltage of battery bag, loop total current are realized in vehicle-mounted CAN communication by hardware trigger,
Framework is simple, with low cost, control is simple, substantially increases accuracy, the reliability of BMS systems.
The technical solution adopted for the present invention to solve the technical problems is：A kind of high pressure is connected electrically in line detecting method, bag
Main control unit, communication module, collecting unit are included, its detecting step is：1. main control unit passes through communication module and sampling unit
Communicated, send a frame synchronization warning order, sampling unit is received after order, reset synchronizer trigger and trigger synchronous letter
Number；2. sampling unit is detected after synchronizing signal, synchronize sampling, thus obtain the total voltage of synchronization, monomer voltage,
The Global Informations such as loop current, main control unit calculates total resistance of current loop according to information, and total during by the resistance with dispatching from the factory
Resistance compares, and connects abnormal according to this to judge whether high tension loop has.
Further, communication module is the modes such as CAN, UART.
Further, after synchronizer trigger is cleared, after first rising edge of automatic detection signal of communication or trailing edge
Trigger synchronizing signal.
Further, when detecting R1 more than 10 times of R0, it is determined as that high tension loop tie point is abnormal.
Brief description of the drawings
The invention will be further described below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the structure equivalent schematic of the present invention.
Fig. 3 is the schematic flow sheet of the present invention.
Embodiment
Reference picture 1, Fig. 2, Fig. 3, that show the concrete structure of the preferred embodiments of the invention.It will be detailed below
It is to be described by reference of the structure shown in Fig. 1 and Fig. 2, but the actually used direction of the present invention is not limited thereto.
The technical solution adopted for the present invention to solve the technical problems is：A kind of high pressure is connected electrically in line detecting method, bag
Main control unit 1, communication module 2, collecting unit 3 are included, its detecting step is：1. main control unit 1 passes through communication module 2 and sampling
Unit 3 is communicated, and sends a frame synchronization warning order, and sampling unit 3 is received after order, is reset synchronizer trigger and is triggered same
Walk signal；2. sampling unit 3 is detected after synchronizing signal, sampling is synchronized, so as to obtain the total voltage of synchronization, monomer
The Global Informations such as voltage, loop current, main control unit 1 calculates total resistance R1 of current loop according to information, and by resistance R1
Total resistance R0 compares during with dispatching from the factory, and connects abnormal according to this to judge whether high tension loop has.
It is preferred that, communication module 2 is the modes such as CAN, UART.
It is preferred that, after synchronizer trigger is cleared, it will be touched after first rising edge of automatic detection signal of communication or trailing edge
Send out synchronizing signal.
It is preferred that, when detecting R1 more than 10 times of R0, it is determined as that high tension loop tie point is abnormal.
Main control unit 1 is communicated by modes such as CAN, UART with sampling unit, in communication starting stage, main control unit
1 can send a frame synchronization warning order to sampling unit 3 in advance, and sampling unit 3 is received after synchronous warning order, immediately entered
The sampling preparatory stage simultaneously informs main control unit 1, and reset synchronizer trigger, and after synchronizer trigger is cleared, automatic detection is led to
Believe first edge of signal（Rising edge or trailing edge）After trigger sync level.
As shown in above-mentioned accompanying drawing 1, Fig. 2, if it is Ro that high tension loop total resistance is measured before dispatching from the factory, when shaking for a long time
Under the influence of dynamic, impact, jump etc., part tie point can be because oxidation, a variety of causes such as loosen and cause loose contact, or even comes off
Situation occur, the resistance of tie point can change increase, and total resistance now is R '=Ro+R1+R2+R3+R4=Uo '/Io ', is examined
Consider under actual complex operating mode detection error to exist, when detecting R '>During 10*RO, it is determined as that high tension loop tie point is abnormal.
Certainly, the invention is not limited to above-mentioned embodiment, and those of ordinary skill in the art are without prejudice to originally
Equivalent variations or replacement can be also made on the premise of spirit, these equivalent modifications or replacement are all contained in the application right
It is required that in limited range.
Claims (4)
1. a kind of high pressure is connected electrically in line detecting method, including main control unit, communication module, collecting unit, its step is：
First, main control unit is communicated by communication module with sampling unit, sends a frame synchronization warning order, sampling unit
Receive after order, reset synchronizer trigger and trigger synchronizing signal；
2nd, sampling unit is detected after synchronizing signal, synchronizes sampling, so as to obtain the total voltage of synchronization, monomer electricity
The Global Informations such as pressure, loop current, main control unit calculates total resistance R1 of current loop according to information, and by the resistance with dispatching from the factory
When total resistance R0 compare, judge whether high tension loop has connection abnormal according to this.
2. high pressure according to claim 1 is connected electrically in line detecting method, it is characterised in that the communication module be CAN,
The modes such as UART.
3. high pressure according to claim 1 is connected electrically in line detecting method, it is characterised in that the synchronizer trigger is clear
After zero, synchronizing signal will be triggered after first rising edge of automatic detection signal of communication or trailing edge.
4. high pressure according to claim 1 is connected electrically in line detecting method, it is characterised in that be more than 10 times when detecting R1
During R0, it is determined as that high tension loop tie point is abnormal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710128083.6A CN106950457A (en) | 2017-03-06 | 2017-03-06 | A kind of high pressure is connected electrically in line detecting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710128083.6A CN106950457A (en) | 2017-03-06 | 2017-03-06 | A kind of high pressure is connected electrically in line detecting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106950457A true CN106950457A (en) | 2017-07-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710128083.6A Pending CN106950457A (en) | 2017-03-06 | 2017-03-06 | A kind of high pressure is connected electrically in line detecting method |
Country Status (1)
| Country | Link |
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| CN (1) | CN106950457A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108215907A (en) * | 2018-01-09 | 2018-06-29 | 联合汽车电子有限公司 | Battery management system and method |
| CN113655396A (en) * | 2020-05-12 | 2021-11-16 | 比亚迪股份有限公司 | Method and system for diagnosing loop connection state of battery pack, management system and vehicle |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102393489A (en) * | 2011-09-30 | 2012-03-28 | 北京汽车新能源汽车有限公司 | On-line monitoring control method of electric car power cell high voltage loop resistor and apparatus thereof |
| CN105137194A (en) * | 2015-08-27 | 2015-12-09 | 上海凌翼动力科技有限公司 | Automobile high voltage circuit connection resistance fault prediction positioning diagnosis circuit and method |
| CN105807229A (en) * | 2016-03-04 | 2016-07-27 | 中车株洲电力机车有限公司 | Traction storage battery connection state detection method, apparatus, managing system and machine shop truck |
-
2017
- 2017-03-06 CN CN201710128083.6A patent/CN106950457A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102393489A (en) * | 2011-09-30 | 2012-03-28 | 北京汽车新能源汽车有限公司 | On-line monitoring control method of electric car power cell high voltage loop resistor and apparatus thereof |
| CN105137194A (en) * | 2015-08-27 | 2015-12-09 | 上海凌翼动力科技有限公司 | Automobile high voltage circuit connection resistance fault prediction positioning diagnosis circuit and method |
| CN105807229A (en) * | 2016-03-04 | 2016-07-27 | 中车株洲电力机车有限公司 | Traction storage battery connection state detection method, apparatus, managing system and machine shop truck |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108215907A (en) * | 2018-01-09 | 2018-06-29 | 联合汽车电子有限公司 | Battery management system and method |
| CN108215907B (en) * | 2018-01-09 | 2021-09-28 | 联合汽车电子有限公司 | Battery management system and method |
| CN113655396A (en) * | 2020-05-12 | 2021-11-16 | 比亚迪股份有限公司 | Method and system for diagnosing loop connection state of battery pack, management system and vehicle |
| CN113655396B (en) * | 2020-05-12 | 2022-10-18 | 比亚迪股份有限公司 | Method and system for diagnosing connection state of power loop of battery pack and management system |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170714 |
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