CN110015106A - A kind of non-on-board charger and the method for security protection that charges - Google Patents
A kind of non-on-board charger and the method for security protection that charges Download PDFInfo
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- CN110015106A CN110015106A CN201711377484.1A CN201711377484A CN110015106A CN 110015106 A CN110015106 A CN 110015106A CN 201711377484 A CN201711377484 A CN 201711377484A CN 110015106 A CN110015106 A CN 110015106A
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- 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
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/14—Conductive energy transfer
-
- 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
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
-
- 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
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
-
- 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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/545—Temperature
-
- 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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/547—Voltage
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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
-
- 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
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- 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
- Y02T90/12—Electric charging stations
-
- 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
- Y02T90/14—Plug-in electric vehicles
-
- 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)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention relates to a kind of non-on-board chargers and charging method for security protection to obtain the nominal parameter of power battery this method comprises: non-on-board charger is communicated with battery management system during Vehicular charging；If battery management system fails, non-on-board charger calculates this charging process inductive charging amount according to the nominal parameter of power battery and the history record of charging data of same type power battery；If this non-on-board charger reality output electricity is greater than this charging process inductive charging amount, non-on-board charger actively stops charging.In the present invention, if battery management system fails during Vehicular charging, non-on-board charger is actively engaged in calculating, according to the nominal parameter of the power battery previously obtained, and combine the history record of charging data of same type power battery, it may determine that whether power battery is full of, actively stop effectively preventing the phenomenon that power battery overcharges to power battery charging if being full of.
Description
Technical field
The present invention relates to a kind of non-on-board charger and charging method for security protection, belong to electric car charging technique neck
Domain.
Background technique
Over 5 years, China new-energy automobile industry entry golden period of development, according to China Association for Automobile Manufacturers's publication
Data, which can be seen that China's new-energy automobile sales volume and year realize from 2012 to 2015, to increase substantially, and sales volume is respectively 1.2 ten thousand
, 1.76 ten thousand, 7.47 ten thousand and 33.1 ten thousand, last year automobile sales volume be even more break through 50.7 ten thousand.This means that 5 years domestic
Amplification is measured up to 41 times.It was predicted that this year, new-energy automobile sales volume in China's was expected to more than 700,000.
However, with the promotion and popularization of new energy vehicle, how to improve the safety of new energy vehicle increasingly by
The concern and attention of society.According to incompletely statistics, since two thousand nine, the new energy vehicle safety accident of open report is up to 30
Example, wherein integral new-energy passenger 22, passenger car 8, mainly include spontaneous combustion is 13 on fire in vehicle travel process, parked state from
Combustion 7, Vehicular charging process 3 on fire.
Therefore, the safety for how improving new energy vehicle is particularly important, classifies from above-mentioned safety accident as can be seen that removing
Outside the safeguard protection for improving vehicle itself, as external equipment-non-on-board charger for being uniquely connected with new energy vehicle,
It is also particularly important for the charging process safety of new energy vehicle to improve its active safety defencive function.
New energy vehicle charging system is divided into safely two independent parts at present, respectively by battery management system (BMS)
It is responsible for the safety that socket is responsible for socket to non-on-board charger output end to the safeguard protection at power battery end, non-on-board charger
Protection.When one side of any of them failure, it will cause the security breaches of entire charging system, to cause the mistake of power battery
Fill, Vehicular charging contactor adhesion the problems such as, influence vehicle and personnel safety.
Summary of the invention
The object of the present invention is to provide a kind of non-on-board charger and charging method for security protection, fill for solving in vehicle
Due to will lead to the problem of power battery overcharges when battery management system fails in electric process.
In order to solve the above technical problems, the present invention provides a kind of non-on-board charger, including following scheme:
Charger scheme one: including processor and memory, the processor is for handling storage in the memory
Instruction to realize following method:
During Vehicular charging, non-on-board charger is communicated with battery management system, obtains the volume of power battery
Determine parameter；
If battery management system fails, non-on-board charger is according to the nominal parameter and same type power of power battery
The history record of charging data of battery calculate this charging process inductive charging amount；
If this non-on-board charger reality output electricity is greater than this charging process inductive charging amount, non-on-board charger master
It is dynamic to stop charging.
Charger scheme two: on the basis of charger scheme one, the processor is stored in the storage for handling
Instruction in device is to realize following method:
According to the nominal parameter of power battery, the nominal gross energy of power battery is calculated；
According to the history record of charging data of the nominal parameter of power battery and same type power battery, power electric is calculated
The electric quantity protective error in pond；
According to the nominal parameter of power battery and the nominal gross energy and electric quantity protective error of calculated power battery,
Calculate this charging process inductive charging amount.
Charger scheme three: on the basis of charger scheme two, the processor is stored in the storage for handling
Instruction in device is to realize following method:
According to the nominal parameter of power battery, single history charging process battery capacity is calculated；
According to the practical charge capacity of single history of non-on-board charger and calculated single history charging process electricity
Pond electricity calculates the electricity error of single history charging process；
According to the history record of charging data of same type power battery, the electricity during the type power battery charging is obtained
Error distribution trend figure is measured, and then obtains the electric quantity protective error for covering all error ranges.
Charger scheme four: on the basis of charger scheme three, the nominal parameter of power battery includes the specified electricity of battery
Pressure, battery rated capacity, battery types, the nominal gross energy of message battery and the initial state-of-charge of battery.
Charger scheme five: on the basis of charger scheme four, the calculation formula of the nominal gross energy of power battery are as follows:
Q2=U*H
Wherein, Q2For the nominal gross energy of power battery, U is battery voltage rating, and H is battery rated capacity；
The calculation formula of this charging process inductive charging amount are as follows:
Q3=Q2*(1-S1)*(1+ω)
Wherein, Q3For this charging process inductive charging amount, S1For the initial state-of-charge of battery, ω is the electricity of power battery
Protect error.
Charger scheme six: on the basis of charger scheme four, the calculating of single history charging process battery capacity is public
Formula are as follows:
Q4=U*H* (1-S1)
Wherein, Q4For single history charging process battery capacity, U is battery voltage rating, and H is battery rated capacity, S1For
The initial state-of-charge of battery；
The calculation formula of the electricity error of single history charging process are as follows:
ω1=(Q-Q4)/Q4
Wherein, ω1For the electricity error of single history charging process, Q is the practical charge capacity of single history.
Charger scheme seven: on the basis of charger scheme two, three, four, five or six, the processor is also used to handle
The instruction of storage in the memory is to realize following method:
Judge whether the nominal gross energy of calculated power battery is equal to the nominal gross energy of message battery that communication obtains,
If being equal to, then calculate this charging process inductive charging amount；Otherwise the nominal gross energy abnormal alarm of battery is carried out.
Charger scheme eight: on the basis of charger scheme one, two, three, four, five or six, the processor is also used to
The instruction of processing storage in the memory is to realize following method:
It is real during non-on-board charger is communicated with battery management system if battery management system does not fail
When acquire power battery dynamic parameter；
Whether any one the real-time dynamic parameter for judging power battery is more than corresponding limit protection threshold value；
If being more than corresponding limit protection threshold value, non-on-board charger actively stops charging.
Charger scheme nine: on the basis of charger scheme eight, the dynamic parameter of power battery includes battery charging electricity
Press measured value, single power battery ceiling voltage and power battery maximum temperature.
The present invention also provides a kind of charging method for security protection of non-on-board charger, including following scheme:
Method scheme one: steps are as follows:
During Vehicular charging, non-on-board charger is communicated with battery management system, obtains the volume of power battery
Determine parameter；
If battery management system fails, non-on-board charger is according to the nominal parameter and same type power of power battery
The history record of charging data of battery calculate this charging process inductive charging amount；
If this non-on-board charger reality output electricity is greater than this charging process inductive charging amount, non-on-board charger master
It is dynamic to stop charging.
Method scheme two: on the basis of method scheme one, the step of calculating this charging process inductive charging amount, includes:
According to the nominal parameter of power battery, the nominal gross energy of power battery is calculated；
According to the history record of charging data of the nominal parameter of power battery and same type power battery, power electric is calculated
The electric quantity protective error in pond；
According to the nominal parameter of power battery and the nominal gross energy and electric quantity protective error of calculated power battery,
Calculate this charging process inductive charging amount.
Method scheme three: on the basis of method scheme two, the step of calculating the electric quantity protective error of power battery, includes:
According to the nominal parameter of power battery, single history charging process battery capacity is calculated；
According to the practical charge capacity of single history of non-on-board charger and calculated single history charging process electricity
Pond electricity calculates the electricity error of single history charging process；
According to the history record of charging data of same type power battery, the electricity during the type power battery charging is obtained
Error distribution trend figure is measured, and then obtains the electric quantity protective error for covering all error ranges.
Method scheme four: on the basis of method scheme three, the nominal parameter of power battery includes battery voltage rating, electricity
Pond rated capacity, battery types, the nominal gross energy of message battery and the initial state-of-charge of battery.
Method scheme five: on the basis of method scheme four, the calculation formula of the nominal gross energy of power battery are as follows:
Q2=U*H
Wherein, Q2For the nominal gross energy of power battery, U is battery voltage rating, and H is battery rated capacity；
The calculation formula of this charging process inductive charging amount are as follows:
Q3=Q2*(1-S1)*(1+ω)
Wherein, Q3For this charging process inductive charging amount, S1For the initial state-of-charge of battery, ω is the electricity of power battery
Protect error.
Method scheme six: on the basis of method scheme four, the calculation formula of single history charging process battery capacity are as follows:
Q4=U*H* (1-S1)
Wherein, Q4For single history charging process battery capacity, U is battery voltage rating, and H is battery rated capacity, S1For
The initial state-of-charge of battery；
The calculation formula of the electricity error of single history charging process are as follows:
ω1=(Q-Q4)/Q4
Wherein, ω1For the electricity error of single history charging process, Q is the practical charge capacity of single history.
Method scheme seven: on the basis of method scheme two, three, four, five or six, further includes:
Judge whether the nominal gross energy of calculated power battery is equal to the nominal gross energy of message battery that communication obtains,
If being equal to, then calculate this charging process inductive charging amount；Otherwise the nominal gross energy abnormal alarm of battery is carried out.
Method scheme eight: on the basis of method scheme one, two, three, four, five or six, further includes:
It is real during non-on-board charger is communicated with battery management system if battery management system does not fail
When acquire power battery dynamic parameter；
Whether any one the real-time dynamic parameter for judging power battery is more than corresponding limit protection threshold value；
If being more than corresponding limit protection threshold value, non-on-board charger actively stops charging.
Method scheme nine: on the basis of method scheme eight, the dynamic parameter of power battery includes that battery charging voltage is surveyed
Magnitude, single power battery ceiling voltage and power battery maximum temperature.
The beneficial effects of the present invention are:
During Vehicular charging in the case where battery management system failure, battery management system can not be detected normally
Whether power accumulator is full of, and is actively engaged in calculating by non-on-board charger at this time, by previously carrying out with battery management system
Information exchange and the nominal parameter of power battery obtained, and the history record of charging data of same type power battery are combined, come
It determines this charging process inductive charging amount of power battery, then compares with the non-on-board charger reality output electricity, Jin Erke
To judge whether power battery is full of, actively stop effectively preventing power battery mistake to power battery charging if being full of
The phenomenon that filling.
Further, when battery management system does not fail, non-on-board charger acquires the dynamic of power battery in real time
Parameter, when any one real-time dynamic parameter of power battery is more than corresponding limit protection threshold value, non-on-board charger master
It is dynamic to stop to power battery charging, it avoids power battery and overcharges or the phenomenon that excess temperature.
Detailed description of the invention
Fig. 1 is the flow chart of the charging method for security protection of non-on-board charger of the invention；
Fig. 2 is the distribution trend figure of electric quantity protective error of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing and specific implementation
The present invention will be described in further detail for example.
The present invention provides a kind of non-on-board chargers, including processor and memory, and the processor is for handling storage
Instruction in memory is to realize the charging method for security protection of non-on-board charger a kind of.The charging method for security protection is examined
Consider cell decay, rifle line loss consumption, cell input terminal loss, non-on-board charger exit loss, different battery types difference
The factors such as different carry out big data analysis using history record of charging of the charging monitoring backstage to different battery types, obtain corresponding
Electric quantity protective error；Non-on-board charger is accurately calculated and is set out according to the electric quantity protective error and power accumulator nominal parameter
Then this charging process inductive charging amount of power battery passes through pair with non-on-board charger electric energy metering device whole story reading difference
Than realizing electric quantity protective strategy, if non-on-board charger reality output electricity is greater than this charging process inductive charging amount, illustrate dynamic
Power battery fills with, then non-on-board charger active stoppage protection is to avoid over-charging of battery phenomenon.
Specifically, the flow chart of the charging method for security protection of non-on-board charger is as shown in Figure 1, in non-on-board charger
In battery management system BMS information interactive process, based on GB/T 27930 " the off-board conduction-type charger of electric car and electricity
Communications protocol between the management system of pond " in the 10th message format and content, to obtain the relevant parameter information of power battery,
Then the active safety Preservation tactics that non-on-board charger is realized by means such as big data analysis, calculating, comparisons, specifically include
Following steps:
(1) during Vehicular charging, non-on-board charger and battery management system carry out information exchange, obtain and save
The nominal parameter of power battery, and the nominal parameter that will acquire is sent to charging monitoring backstage.
Wherein, charging monitoring backstage can be a part of non-on-board charger, be also possible to the place being separately provided
Manage device.The nominal parameter of power battery includes battery voltage rating U, battery volume in BRM message (BMS and vehicle recognition message)
The nominal gross energy Q of power accumulator in constant volume H and battery types and BCP (power accumulator charge parameter) message1With
The initial state-of-charge of power accumulator (SOC) S1。
In addition, non-on-board charger is during carrying out information exchange with battery management system BMS, it is also necessary to obtain dynamic
Power battery limit protection threshold value, as monomer highest allows charging voltage U1, highest allow charge total voltage U2Allow temperature with highest
Spend T.
During power battery charging, if battery management system operate normally (not failing), non-on-board charger with
Battery management system is communicated, and acquires the battery charging voltage measured value U in BCS (the total state of battery charging) message in real time3、
Single power battery ceiling voltage U4With the power accumulator maximum temperature T in BSM (power accumulator status information) message1Deng
The dynamic parameter of power battery.Non-on-board charger according to collected power battery dynamic parameter, in real time with the corresponding limit
Protection threshold value compares, if exceeding the limit protection threshold value of power accumulator, that is, works as U3> U2Or U4> U1Or T1It is non-when > T
Vehicular charger actively stops sending to power battery charging and stopping message CST；Otherwise this charging process is continued to, until
BMS, which is sent, stops message BST.By this process it is possible to realize that power battery limit threshold value is protected, when battery management system fails
Can not discretionary protection when, non-on-board charger can bear the safeguard protection of entire charging system, avoid power battery excess temperature or
Overcharge phenomenon.
(2) if battery management system fails, non-on-board charger is according to the nominal parameter and same type of power battery
The history record of charging data of power battery calculate this charging process inductive charging amount.
Wherein, battery management system failure refer between battery management system and non-on-board charger occur communication failure,
Battery management system itself can not obtain the message information of non-on-board charger transmission, power accumulator communication abnormality occurs or loses
The problems such as case.
Specifically, the step of calculating this charging process inductive charging amount includes:
1) according to battery voltage rating U and battery rated capacity H, the nominal gross energy Q of power accumulator is calculated2, calculate
Expression formula is as follows:
Q2=U*H
2) judge the nominal gross energy Q of calculated power accumulator2The battery whether being equal in the BCP message that communication obtains
Nominal gross energy Q1(the nominal gross energy of message battery), if the two is equal, continues following calculating.
In addition, if the nominal gross energy Q of power accumulator2With the nominal gross energy Q of power accumulator in message1It is unequal, then
It nominally can Q with power accumulator2Based on, and the alarm logging of the nominal gross energy exception of a power accumulator is generated, to mention
Show that battery producer checks battery problems in time, avoids that there are security risks.
3) according to the history record of charging data of the nominal parameter of power battery and different battery types, after charging monitoring
Platform calculates the electric quantity protective error of power battery using big data.
Wherein, steps are as follows for the calculating of electric quantity protective error ω:
A. according to battery voltage rating U, battery rated capacity H and the initial state-of-charge S of power accumulator1, charging prison
Control hind computation goes out single history charging process battery capacity Q4, calculation expression is as follows:
Q4=U*H* (1-S1)
B. according to the practical charge capacity Q of the single history of non-on-board charger, calculated single history charging process electricity
Pond electricity Q4, charging monitoring hind computation goes out the electricity error ω of single history charging process1, calculation expression is as follows:
ω1=(Q-Q4)/Q4
Wherein in the practical charge capacity Q of single history i.e. history charging process non-on-board charger electrical energy measurement dress
The whole story reading difference set.
C. according to the corresponding history record of charging of different battery types, battery types charging is depicted on charging monitoring backstage
The electricity error ω of process1Distribution trend figure, and then analyze and obtain the electric quantity protective error ω that can cover all error ranges.
Calculate ω1Purpose is to analyze the difference error of battery theoretical capacity Yu charger reality output electricity, to accrued
Calculate battery inductive charging amount Q3.In the present embodiment, electricity error ω1Distribution trend figure is as shown in Figure 2.7.87% in Fig. 2
Refer to that the difference of non-on-board charger reality output electricity and power battery theoretical capacity accounts for power battery reason in certain charging process
By the percentage of electricity, i.e. non-on-board charger reality output electricity=power battery theory charge volume * (1+7.87%).
7.87% cover cell decay, rifle line loss consumption, cell input terminal loss, charger exit loss, battery types difference,
The composite factors such as SOC precision.
D. charging monitoring backstage issues corresponding electric quantity protective error ω according to the battery types of this charging vehicle.
Since there are different electric quantity protective errors for different battery types, it is contemplated that varying environment, the otherness in area,
Charging monitoring backstage pointedly carries out data mining, by automatically correcting electricity error by big data analysis, avoids electricity
Amount protection error wrong report, improves precision.
4) it is missed according to the nominal gross energy and electric quantity protective of the nominal parameter of power battery and calculated power battery
Difference calculates this charging process inductive charging amount.
Specifically, the electricity error ω and power accumulator that non-on-board charger issues from the background according to its charging monitoring are nominal
Gross energy Q2, calculate this charging process inductive charging amount Q3, calculation expression is as follows:
Q3=Q2*(1-S1)*(1+ω)
(3) non-on-board charger reads electric energy metering device whole story degree difference in this charging process (this is off-board
Charger reality output electricity) Q, by this non-on-board charger reality output electricity Q and this charging process inductive charging amount Q3
It compares, has at this time:
If Q > Q3, then non-on-board charger actively stops charging, sends and stops message CST；
If Q≤Q3, then continue this charging process, until artificial suspension charging or BMS send and stop message BST.
It should be noted that the practical charge capacity of above-mentioned history and this non-on-board charger reality output electricity can be with
It is interpreted as identical concept, is represented as Q, Q represents the whole story degree difference of electric energy metering device in charging process, and charger exists
This non-on-board charger reality output electricity Q used when local protection, for the analysis of charging monitoring back-end data just
It is the practical charge capacity Q of history, the environment that the two is used only is different, and practical is identical concept.
Non-on-board charger of the invention is using the Preservation tactics for actively calculating the chargeable amount of power accumulator, when power stores
In the case that battery communication abnormality occurs or loses case, battery management system can not normally detect whether power accumulator is full of, non-
Vehicular charger actively calculates, and avoids over-charging of battery phenomenon.The present invention only relies on the active acquisition of non-on-board charger, actively counts
Calculation and active comparison remain to the safety for actively protecting charging system after battery management system BMS failure, do not need to change any
Timing process increases any hardware and acquires equipment, popularizations degree with can practicability it is higher.
Claims (10)
1. a kind of non-on-board charger, which is characterized in that including processor and memory, the processor is stored in for handling
Instruction in the memory is to realize following method:
During Vehicular charging, non-on-board charger is communicated with battery management system, obtains the specified ginseng of power battery
Number；
If battery management system fails, non-on-board charger is according to the nominal parameter and same type power battery of power battery
History record of charging data, calculate this charging process inductive charging amount；
If this non-on-board charger reality output electricity is greater than this charging process inductive charging amount, non-on-board charger actively stops
Only charge.
2. non-on-board charger according to claim 1, which is characterized in that the processor is stored in described for processing
Instruction in memory is to realize following method:
According to the nominal parameter of power battery, the nominal gross energy of power battery is calculated；
According to the history record of charging data of the nominal parameter of power battery and same type power battery, power battery is calculated
Electric quantity protective error；
According to the nominal parameter of power battery and the nominal gross energy and electric quantity protective error of calculated power battery, calculate
This charging process inductive charging amount.
3. non-on-board charger according to claim 2, which is characterized in that the processor is stored in described for processing
Instruction in memory is to realize following method:
According to the nominal parameter of power battery, single history charging process battery capacity is calculated；
According to the practical charge capacity of single history of non-on-board charger and calculated single history charging process battery electricity
Amount, calculates the electricity error of single history charging process；
According to the history record of charging data of same type power battery, show that the electricity during the type power battery charging misses
Difference cloth tendency chart, and then obtain the electric quantity protective error for covering all error ranges.
4. non-on-board charger according to claim 3, which is characterized in that the nominal parameter of power battery includes battery volume
Constant voltage, battery rated capacity, battery types, the nominal gross energy of message battery and the initial state-of-charge of battery.
5. non-on-board charger according to claim 4, which is characterized in that the calculating of the nominal gross energy of power battery is public
Formula are as follows:
Q2=U*H
Wherein, Q2For the nominal gross energy of power battery, U is battery voltage rating, and H is battery rated capacity；
The calculation formula of this charging process inductive charging amount are as follows:
Q3=Q2*(1-S1)*(1+ω)
Wherein, Q3For this charging process inductive charging amount, S1For the initial state-of-charge of battery, ω is the electric quantity protective of power battery
Error.
6. non-on-board charger according to claim 4, which is characterized in that the meter of single history charging process battery capacity
Calculate formula are as follows:
Q4=U*H* (1-S1)
Wherein, Q4For single history charging process battery capacity, U is battery voltage rating, and H is battery rated capacity, S1For battery
Initial state-of-charge；
The calculation formula of the electricity error of single history charging process are as follows:
ω1=(Q-Q4)/Q4
Wherein, ω1For the electricity error of single history charging process, Q is the practical charge capacity of single history.
7. the non-on-board charger according to any one of claim 2-6, which is characterized in that the processor is also used to locate
The instruction of reason storage in the memory is to realize following method:
Judge whether the nominal gross energy of calculated power battery is equal to the nominal gross energy of message battery that communication obtains, if waiting
In, then calculate this charging process inductive charging amount；Otherwise the nominal gross energy abnormal alarm of battery is carried out.
8. non-on-board charger according to claim 1 to 6, which is characterized in that the processor is also used to locate
The instruction of reason storage in the memory is to realize following method:
If battery management system does not fail, during non-on-board charger is communicated with battery management system, adopt in real time
Collect the dynamic parameter of power battery；
Whether any one the real-time dynamic parameter for judging power battery is more than corresponding limit protection threshold value；
If being more than corresponding limit protection threshold value, non-on-board charger actively stops charging.
9. non-on-board charger according to claim 8, which is characterized in that the dynamic parameter of power battery includes that battery fills
Piezoelectric voltage measured value, single power battery ceiling voltage and power battery maximum temperature.
10. a kind of charging method for security protection of non-on-board charger, which is characterized in that steps are as follows:
During Vehicular charging, non-on-board charger is communicated with battery management system, obtains the specified ginseng of power battery
Number；
If battery management system fails, non-on-board charger is according to the nominal parameter and same type power battery of power battery
History record of charging data, calculate this charging process inductive charging amount；
If this non-on-board charger reality output electricity is greater than this charging process inductive charging amount, non-on-board charger actively stops
Only charge.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113459898A (en) * | 2021-06-24 | 2021-10-01 | 云度新能源汽车有限公司 | Intelligent remote diagnosis method and system for battery overcharge of electric vehicle |
| CN113733981A (en) * | 2020-05-29 | 2021-12-03 | 蜂巢能源科技有限公司 | Charging control method and device for power battery, medium and electronic equipment |
| CN115593273A (en) * | 2022-12-12 | 2023-01-13 | 成都壹为新能源汽车有限公司（Cn） | Electric automobile chassis system and control method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010061465A1 (en) * | 2008-11-28 | 2010-06-03 | トヨタ自動車株式会社 | Vehicular charging system |
| CN101740837A (en) * | 2009-12-25 | 2010-06-16 | 天津清源电动车辆有限责任公司 | Control method for vehicle-mounted charge and quick charge of electric automobiles |
| CN104931882A (en) * | 2014-03-21 | 2015-09-23 | 比亚迪股份有限公司 | Power battery capacity correction method and apparatus |
| CN105207304A (en) * | 2015-10-20 | 2015-12-30 | 西安特锐德智能充电科技有限公司 | Battery charger with active protection function and charging method |
| CN106585396A (en) * | 2016-11-17 | 2017-04-26 | 上海理工大学 | Redundancy active monitoring electric automobile charging charger control method |
| CN107037370A (en) * | 2017-04-18 | 2017-08-11 | 知豆电动汽车有限公司 | Residual quantity calculation method of electric vehicle battery based on monitoring data |
-
2017
- 2017-12-19 CN CN201711377484.1A patent/CN110015106B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010061465A1 (en) * | 2008-11-28 | 2010-06-03 | トヨタ自動車株式会社 | Vehicular charging system |
| CN101740837A (en) * | 2009-12-25 | 2010-06-16 | 天津清源电动车辆有限责任公司 | Control method for vehicle-mounted charge and quick charge of electric automobiles |
| CN104931882A (en) * | 2014-03-21 | 2015-09-23 | 比亚迪股份有限公司 | Power battery capacity correction method and apparatus |
| CN105207304A (en) * | 2015-10-20 | 2015-12-30 | 西安特锐德智能充电科技有限公司 | Battery charger with active protection function and charging method |
| CN106585396A (en) * | 2016-11-17 | 2017-04-26 | 上海理工大学 | Redundancy active monitoring electric automobile charging charger control method |
| CN107037370A (en) * | 2017-04-18 | 2017-08-11 | 知豆电动汽车有限公司 | Residual quantity calculation method of electric vehicle battery based on monitoring data |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113733981A (en) * | 2020-05-29 | 2021-12-03 | 蜂巢能源科技有限公司 | Charging control method and device for power battery, medium and electronic equipment |
| CN113733981B (en) * | 2020-05-29 | 2023-04-28 | 蜂巢能源科技股份有限公司 | Charging control method and device of power battery, medium and electronic equipment |
| CN113459898A (en) * | 2021-06-24 | 2021-10-01 | 云度新能源汽车有限公司 | Intelligent remote diagnosis method and system for battery overcharge of electric vehicle |
| CN115593273A (en) * | 2022-12-12 | 2023-01-13 | 成都壹为新能源汽车有限公司（Cn） | Electric automobile chassis system and control method |
| CN115593273B (en) * | 2022-12-12 | 2023-04-07 | 成都壹为新能源汽车有限公司 | Electric automobile chassis system and control method |
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