CN207000210U - A kind of subsidiary secondary failure diagnosis and the lithium battery module acquisition system for the treatment of mechanism - Google Patents
A kind of subsidiary secondary failure diagnosis and the lithium battery module acquisition system for the treatment of mechanism Download PDFInfo
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- CN207000210U CN207000210U CN201720916141.7U CN201720916141U CN207000210U CN 207000210 U CN207000210 U CN 207000210U CN 201720916141 U CN201720916141 U CN 201720916141U CN 207000210 U CN207000210 U CN 207000210U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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Abstract
It the utility model is related to the lithium battery module acquisition system of the battery management system of lithium battery module, specifically a kind of subsidiary secondary failure diagnosis and treatment mechanism.Including data acquisition unit, level one data processing unit and secondary data processing unit；Data acquisition unit includes voltage acquisition module, current acquisition module and temperature collect module；Level one data processing unit includes coagulation device MCU and real-time clock and CAN with coagulation device MCU communication connections；Secondary data processing unit includes secondary processor CPU and the communication interface with secondary processor CPU communication connections.The utility model can stablize processing major accident rapidly and share processor load.
Description
Technical field
The battery management system of lithium battery module is the utility model is related to, specifically a kind of subsidiary secondary failure diagnosis
With the lithium battery module acquisition system for the treatment of mechanism.
Background technology
Battery powered electronics are increasingly popularized in the application of modern society.The Rapid Expansion of handheld device and electronic vapour
The popularization of the similar applications such as car result in the demand more and more higher to battery technology.But battery also band while application extension
Corresponding safety problem is carried out, except considering safety factor, the reliability service of battery supply set in battery design, production
Battery management system is be unable to do without, it includes charge control, battery capacity monitoring, and remaining runtime estimates that the balanced and life-span is estimated
The functions such as survey, and the premise of all these functions is accurately to gather the parameters of battery modules as far as possible, such as voltage, temperature
Deng.
Existing many battery management systems are structurally and functionally being divided using the structure being classified, i.e. control panel with collection plate
Open, collection plate carries out differential voltage sampling using acquisition chip, and is uploaded to control panel by bus, the host computer on control panel
The work such as stored, handled, being diagnosed.Phenomena such as event such as thermal runaway due to being related to cell safety, is often very fast when occurring
Speed, though the communication interference of short time or communicating interrupt may also can cause response of the system to battery failures not in time, and then
Cause serious consequence.And gathered data is uploaded to host computer merely, lacks the time and fault message e insufficient to reflection electricity
Whole states of pond module, if the work such as parameter estimation, fault diagnosis, increase temporal information are all given at host computer
Reason, the load of host computer can be then aggravated when battery modules are larger.
Utility model content
The utility model, which aims to provide one kind, stably to handle major accident rapidly, and the one kind for sharing processor load is attached
Secondary failure diagnoses and the lithium battery module acquisition system for the treatment of mechanism.
In order to solve the above technical problems, the technical solution adopted in the utility model is：A kind of subsidiary secondary failure diagnosis
With the lithium battery module acquisition system for the treatment of mechanism, including data acquisition unit, level one data processing unit and secondary data
Processing unit；The data acquisition unit includes being used for the voltage acquisition mould for measuring battery cell differential voltage in battery modules
Block, current acquisition module and the temperature collect module for gathering same battery cell surface and internal two temperature；It is described
Level one data processing unit includes coagulation device MCU and led to the real-time clock of coagulation device MCU communication connections and CAN
Believe module, surface temperature and the correction data of internal temperature, are used for when being stored with a Battery pack failure in coagulation device MCU
Battery modules fault type is judged according to the temperature information received for coagulation device MCU；The secondary data processing unit
Communication interface including secondary processor CPU and with secondary processor CPU communication connections；The coagulation device MCU's is defeated
Enter end and communicate connection, coagulation with voltage acquisition module, current acquisition module, temperature collect module and real-time clock respectively
Interacted between device MCU and CAN by I/O interfaces, an output is drawn in I/O interfaces on coagulation device MCU
Pin is directly connected with communication interface input end, and the output end of CAN passes through fault message bus and collection bus
It is connected with the input of communication interface.
Preferably, the voltage acquisition module, current acquisition module and temperature collect module pass through cable and setting respectively
It is connected in the external interface in battery modules with battery modules；Voltage acquisition module offer is led to no less than the voltage acquisition on 12 tunnels
Road, current acquisition module provide the current acquisition passage no less than two-way, and temperature collect module provides the temperature no less than six tunnels
Acquisition channel.
Preferably, the voltage acquisition module includes first voltage acquisition chip and second voltage acquisition chip, the first electricity
Pressure acquisition chip and second voltage acquisition chip are high precision electro cell monitoring and protection chip, first voltage acquisition chip and the
Two voltage acquisition chips are directly connected to the monomer of connecting in battery modules by interface and are used to measure each monomer respectively
Differential voltage, wherein first voltage acquisition chip is used to measure high battery voltage, and second voltage acquisition chip is used to survey
Low-potential voltage is measured, between first voltage acquisition chip and second voltage acquisition chip and second voltage acquisition chip and one
It is respectively equipped with one group of bus between level processor MCU to interact, every group of bus includes data/address bus and status bus.
Preferably, the temperature collect module includes being used for measuring the of battery modules surface temperature and internal temperature respectively
One temperature sensor and second temperature sensor, the first temperature sensor are arranged on the shell of battery modules, and second temperature passes
Sensor is arranged between two battery Soft Rolls in battery modules monomer.
Preferably, the current acquisition module is Hall current sensor.
Preferably, the coagulation device MCU is the vapour that can provide serious and conventional lithium secondary battery fault diagnosis mechanism
The bit processor of car level 16.
Beneficial effect
Acquisition system of the present utility model is added at one-level in addition to carrying out conventional battery external characteristics data acquisition
Device MCU is managed, coagulation device MCU analysis collection information implements monitoring and fault diagnosis functions, passes through preliminary point of gathered data
Analysis judges the state of battery pack, and the supplemental characteristic of subsidiary failure diagnosis information is placed on data/address bus and is transferred to secondary processor
CPU.Coagulation device MCU also in case of emergency can voluntarily handle more serious battery failures in itself, and total around communication
Line directly reports secondary processor CPU.Such acquisition system has certain autonomic function, effectively alleviates superior processor
Processing pressure, precision is high, and response is fast, has good reliability and autgmentability, big suitable for electric automobile and energy-accumulating power station etc.
Scale battery modules.There is advantages below compared with prior art.
1) data acquisition unit is a large amount of to reduce the negative of upper secondary processor CPU per se with fault diagnosis and temporal information
Lotus, while easy-to-look-up historical failure information；
2) warning message after catastrophe failure occurs and comes from acquisition system, by individual transmission and independent of CAN communication
Module, accelerate failure response time, it is ensured that reliability of battery system；
3) temperature collect module gathers battery temperature surface and internal temperature respectively, and is examined internal-external temperature difference as failure
One of disconnected foundation；
4) battery modules second class protection is provided.By diagnosis, when the failure for occurring not influenceing system safety in battery modules
When, failure situation is recorded and uploaded through CAN without processing by system；When serious event occur in diagnosis battery modules
Hinder and jeopardize battery modules and system apply when, protected in time and skip CAN and directly transmitted warning message
Give secondary processor CPU.
Brief description of the drawings
Fig. 1 is structural framing schematic diagram of the present utility model；
Fig. 2 is that first voltage acquisition chip and second voltage acquisition chip are set in voltage acquisition module of the present utility model
Put schematic diagram；
Fig. 3 is that the setting of the first temperature sensor and second temperature sensor in temperature collect module of the present utility model is shown
It is intended to；
The curve map of first temperature sensor and second temperature sensor measured temperature when Fig. 4 is lithium battery module failure；
Fig. 5 is the flow chart that secondary failure of the present utility model is diagnosed and handled；
Marked in figure：1st, shell, 2, battery Soft Roll, the 3, first temperature sensor, 4, second temperature sensor, 5, outside battery
Housing-plate, 6, battery pole ear.
Embodiment
As shown in Figures 1 to 5, a kind of lithium battery module with secondary failure diagnosis and treatment mechanism of the present utility model is adopted
Collecting system, including data acquisition unit, level one data processing unit and secondary data processing unit.Data acquisition unit includes
Voltage acquisition module, current acquisition module and temperature collect module；Level one data processing unit include coagulation device MCU with
And real-time clock and CAN with coagulation device MCU communication connections；Secondary data processing unit includes two stage treatment
Device CPU and the communication interface with secondary processor CPU communication connections.
Coagulation device MCU input respectively with voltage acquisition module, current acquisition module, temperature collect module and
Real-time clock communication connection, is interacted, coagulation device between coagulation device MCU and CAN by I/O interfaces
An output pin is directly connected with communication interface input end in the upper I/O interfaces of MCU, and the output end of CAN passes through event
Barrier bus and collection bus are connected with the input of communication interface.Voltage acquisition module, current acquisition module and temperature
Degree acquisition module is connected by cable and the external interface being arranged in battery modules with battery modules respectively；Voltage acquisition module
The voltage acquisition passage no less than 12 tunnels is provided, current acquisition module provides the current acquisition passage no less than two-way, temperature
Acquisition module provides the temperature acquisition passage no less than six tunnels.
Voltage acquisition module includes first voltage acquisition chip and second voltage acquisition chip, can be by cascading extension measurement
Number of batteries, and over-pressed, under-voltage, excessively gentle low-temperature protection mechanism is provided.First voltage acquisition chip and second voltage collection core
Piece is high precision electro cell monitoring and protection chip, and the measurable 3-6 economize on electricity cell voltages of the chip simultaneously can carry out balanced, chip between level
It can cascade and further expand number of batteries.First voltage acquisition chip and second voltage acquisition chip pass through interface and battery respectively
Series connection monomer in module is directly connected to and is used for the differential voltage for measuring each monomer, and wherein first voltage acquisition chip is used
In measurement high battery voltage, second voltage acquisition chip is used to measure low-potential voltage, in first voltage acquisition chip and
One group of bus is respectively equipped between second voltage acquisition chip and between second voltage acquisition chip and coagulation device MCU to enter
Row interaction, every group of bus include data/address bus and status bus.Data/address bus completes first voltage by SPI interface and gathers core
All measurement data are simultaneously uploaded to coagulation device MCU by data interaction between piece and second voltage acquisition chip；Status bus
For shape between first voltage acquisition chip and second voltage acquisition chip and between second voltage acquisition chip and coagulation device MCU
The interaction of state, including the synchronous conversion signal sent by coagulation device MCU, and first voltage acquisition chip and second voltage
Ready for data signal, alarm signal and the fault-signal of acquisition chip.Here fault-signal puts two kinds for overcharging and crossing
Situation, it can diagnose and corresponding alarm signal is provided；And it flexibly can set to overcharge and cross according to battery and application type and put door
Limit and failure corresponding time.
Temperature collect module includes being used for the first TEMP for measuring battery modules surface temperature and internal temperature respectively
Device 3 and second temperature sensor 4, and using inside and outside temperature and internal-external temperature difference rate of change as one of foundation of fault diagnosis.Two
Individual sensor is thermometric chip 18B20, and such bus-type temperature measuring mechanism is most in the case where main control MCU interface is limited
May more than progresss battery cell monitoring temperature and facilitate thermometric points expansion.First temperature sensor 3 and second temperature pass
Sensor 4 is all disposed within close to the of a relatively high position of battery temperature of battery pole ear 6, carries out battery cell monitoring temperature and convenient survey
The expansion of warm spot number, the first temperature sensor 3 are arranged on the shell 1 of battery modules, and second temperature sensor 4 is arranged on battery
Between two battery Soft Rolls 2 in module in battery cell.As shown in figure 4, when the utility model gives a Battery pack failure
The correction data of surface temperature and internal temperature, battery internal-external temperature difference keeps relative stability under normal circumstances, once battery goes out
Existing abnormal conditions, both difference will be widened gradually, and be likely to result in thermal runaway；When battery surface temperature is at 60 DEG C or so
When, internal temperature of battery has reached than relatively hazardous 120 DEG C, and have it is further up to battery diaphragm fusing point typically in 130-
140 DEG C of trend；When having a bit of temperature jump in 4250s or so temperature, the change of battery status can be implied, but the step
It is neutralised in external temperature data due to heat transfer process.Therefore this patent uses battery cell internal and external temperature and its temperature
Difference, which becomes, is turned to one of foundation of fault diagnosis.
Current acquisition module is Hall current sensor, easy for installation, fast response time, strong antijamming capability, is applied to
Industry spot, and be transformed to by sampling resistor to pass to coagulation device MCU after voltage data.
Coagulation device MCU is 16 processing of automotive grade that can provide serious and conventional lithium secondary battery fault diagnosis mechanism
Device.Coagulation device MCU receives the real time clock data of measurement data and real-time clock from data acquisition unit；At one-level
Reason device MCU is arranged to gathered data, is filed, analyzed and uploaded, and according to the failure of internal-external temperature difference and voltage acquisition module
Signal, the fault type and the order of severity and then progress respective handling that diagnosis battery modules occur；
In the event of conventional fault, more serious consequence, coagulation device MCU will not be brought to be recorded after judging to battery modules
Fault type, and fault message is sent into CAN together with gathered data, give secondary processor CPU processing.
It if being diagnosed to be generation catastrophe failure, will directly be handled by the coagulation device MCU of acquisition system, perform battery pack
Protection mechanism, and alarm signal is skipped into CAN, it is placed directly within communication interface and supplies secondary processor CPU processing；
The type of fault diagnosis includes overcharging, cross put, high temperature, low temperature and excessively stream, and set according to the order of severity of failure
Two temperature thresholds, matching convention failure and catastrophe failure；
If detecting that catastrophe failure occurs for battery modules, security incident may be triggered, it will send alarm signal, the letter
Communication interface number is not placed directly within by CAN, it is such to be configured to prevent that the communication of short time from disturbing or communication
Interruption makes battery management system that battery modules are lost with monitoring, improves battery management system to the response speed of failure and whole system
The stability of system.
A kind of secondary failure diagnosis of lithium battery module of the present utility model and processing method are based on a kind of above-mentioned band two level
The lithium battery module acquisition system of fault diagnosis and dealing mechanism, comprises the following steps：
1）, system initialization；
2）, battery data completely gathered by voltage acquisition module, current acquisition module and temperature collect module；
3）, by coagulation device MCU judge whether battery internal and external temperature and battery internal-external temperature difference reach the first temperature door
Limit, the threshold value of corresponding first temperature sensor measured temperature is 75-85 DEG C in the first temperature threshold, corresponding second temperature sensing
The threshold value of device measured temperature is 105-115 DEG C, the door of corresponding first temperature sensor and second temperature sensor institute thermometric difference
Limit value is 30-35 DEG C.If reaching the first temperature threshold, coagulation device MCU passes through an output pin in its I/O interface
To secondary processor CPU, cut-out battery modules of existing side by side are protected for directly alarm；If not up to the first temperature threshold, enters
Row step 4）；
4）, by coagulation device MCU judge whether battery internal and external temperature and battery internal-external temperature difference reach second temperature door
Limit, the threshold value of corresponding first temperature sensor measured temperature is 65-75 DEG C in second temperature thresholding, corresponding second temperature sensing
The threshold value of device measured temperature is 80-90 DEG C, the thresholding of corresponding first temperature sensor and second temperature sensor institute thermometric difference
It is worth for 20-25 DEG C.If reaching second temperature thresholding, what is carried out high/low temperature diagnosis by coagulation device MCU and will be diagnosed to be is former
Barrier information and the temperature information gathered by temperature collect module are transmitted to secondary processor CPU by CAN；If not
Reach second temperature thresholding, carry out step 5）；
5）, the voltage that by coagulation device MCU judges to be gathered by voltage acquisition module whether be less than systemic presupposition
Minimum voltage thresholding or the ceiling voltage thresholding higher than systemic presupposition, if less than minimum voltage thresholding or higher than ceiling voltage door
Limit, coagulation device MCU carry out overvoltage/undervoltage diagnosis and by the fault message being diagnosed to be and by voltage acquisition module gather voltage
Information is transmitted to secondary processor CPU by CAN；If by the voltage that voltage acquisition module is gathered in minimum electricity
Pressure gate limit and ceiling voltage thresholding between, then by and processor MCU will be by temperature collect module, voltage acquisition module and electricity
Temperature information, information of voltage and the current information that stream acquisition module gathers respectively are transferred to two by CAN respectively
Level processing CPU；
6）, step 2）To step 5）Repetitive cycling.
Claims (6)
1. a kind of subsidiary secondary failure diagnosis and the lithium battery module acquisition system for the treatment of mechanism, it is characterised in that：Including data
Collecting unit, level one data processing unit and secondary data processing unit；The data acquisition unit includes being used to measure electricity
The voltage acquisition module of battery cell differential voltage, current acquisition module and for gathering same battery cell table in the module of pond
Face and the temperature collect module of internal two temperature；The level one data processing unit includes coagulation device MCU and with one
The real-time clock and CAN of level processor MCU communication connections, are stored with Battery pack event in coagulation device MCU
Surface temperature and the correction data of internal temperature during barrier, for being judged for coagulation device MCU according to the temperature information received
Battery modules fault type；The secondary data processing unit includes secondary processor CPU and communicated with secondary processor CPU
The communication interface of connection；The input of the coagulation device MCU respectively with voltage acquisition module, current acquisition module, temperature
Acquisition module and real-time clock communication connection, are handed between coagulation device MCU and CAN by I/O interfaces
Mutually, an output pin is directly connected with communication interface input end in I/O interfaces on coagulation device MCU, CAN
Output end is connected by fault message bus and collection bus with the input of communication interface.
2. a kind of subsidiary secondary failure diagnosis according to claim 1 and the lithium battery module acquisition system for the treatment of mechanism,
It is characterized in that：The voltage acquisition module, current acquisition module and temperature collect module by cable and are arranged at electricity respectively
External interface on the module of pond is connected with battery modules；Voltage acquisition module provides the voltage acquisition passage no less than 12 tunnels,
Current acquisition module provides the current acquisition passage no less than two-way, and temperature collect module provides the temperature acquisition no less than six tunnels
Passage.
3. a kind of subsidiary secondary failure diagnosis according to claim 2 and the lithium battery module acquisition system for the treatment of mechanism,
It is characterized in that：The voltage acquisition module includes first voltage acquisition chip and second voltage acquisition chip, first voltage are adopted
Collection chip and second voltage acquisition chip are high precision electro cell monitoring and protect chip, first voltage acquisition chip and the second electricity
Pressure acquisition chip is directly connected to and is used for respectively the difference for measuring each monomer by interface and the monomer of connecting in battery modules
Component voltage, wherein first voltage acquisition chip are used to measure high battery voltage, and second voltage acquisition chip is low for measuring
Potential voltage, between first voltage acquisition chip and second voltage acquisition chip and at second voltage acquisition chip and one-level
One group of bus is respectively equipped between reason device MCU to interact, every group of bus includes data/address bus and status bus.
4. a kind of subsidiary secondary failure diagnosis according to claim 2 and the lithium battery module acquisition system for the treatment of mechanism,
It is characterized in that：The temperature collect module includes being used for measuring battery modules surface temperature and the first temperature of internal temperature respectively
Degree sensor and second temperature sensor, the first temperature sensor are arranged on the shell of battery modules, second temperature sensor
It is arranged between two battery Soft Rolls in battery modules monomer.
5. a kind of subsidiary secondary failure diagnosis according to claim 2 and the lithium battery module acquisition system for the treatment of mechanism,
It is characterized in that：The current acquisition module is Hall current sensor.
6. a kind of subsidiary secondary failure diagnosis according to claim 1 and the lithium battery module acquisition system for the treatment of mechanism,
It is characterized in that：The coagulation device MCU is the automotive grade that can provide serious and conventional lithium secondary battery fault diagnosis mechanism
16 bit processors.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720916141.7U CN207000210U (en) | 2017-07-26 | 2017-07-26 | A kind of subsidiary secondary failure diagnosis and the lithium battery module acquisition system for the treatment of mechanism |
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| CN201720916141.7U CN207000210U (en) | 2017-07-26 | 2017-07-26 | A kind of subsidiary secondary failure diagnosis and the lithium battery module acquisition system for the treatment of mechanism |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107234981A (en) * | 2017-07-26 | 2017-10-10 | 洛阳理工学院 | The lithium battery module acquisition system and method with treatment mechanism are diagnosed with secondary failure |
| CN115548481A (en) * | 2022-11-28 | 2022-12-30 | 深圳海润新能源科技有限公司 | Fault diagnosis method, energy storage system and computer equipment |
-
2017
- 2017-07-26 CN CN201720916141.7U patent/CN207000210U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107234981A (en) * | 2017-07-26 | 2017-10-10 | 洛阳理工学院 | The lithium battery module acquisition system and method with treatment mechanism are diagnosed with secondary failure |
| CN115548481A (en) * | 2022-11-28 | 2022-12-30 | 深圳海润新能源科技有限公司 | Fault diagnosis method, energy storage system and computer equipment |
| CN115548481B (en) * | 2022-11-28 | 2023-02-14 | 深圳海润新能源科技有限公司 | Fault diagnosis method, energy storage system and computer equipment |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20180213 Termination date: 20200726 |