CN109849735A - A kind of new energy car battery overcharges protection system and method - Google Patents
A kind of new energy car battery overcharges protection system and method Download PDFInfo
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- CN109849735A CN109849735A CN201910131856.5A CN201910131856A CN109849735A CN 109849735 A CN109849735 A CN 109849735A CN 201910131856 A CN201910131856 A CN 201910131856A CN 109849735 A CN109849735 A CN 109849735A
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- 238000012544 monitoring process Methods 0.000 claims abstract description 25
- 230000006855 networking Effects 0.000 claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 230000005856 abnormality Effects 0.000 claims description 22
- 230000005611 electricity Effects 0.000 claims description 8
- 230000002159 abnormal effect Effects 0.000 claims description 4
- 230000001174 ascending effect Effects 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 3
- 230000004888 barrier function Effects 0.000 claims 1
- 238000012360 testing method Methods 0.000 description 2
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Classifications
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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
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
Abstract
Present invention discloses a kind of new energy car batteries to overcharge protection system and method, and wherein system includes remote monitoring platform (1), car networking terminal (2) and charging pile monitor terminal (3)；The car networking terminal (2) is used to acquire the battery information and warning message of new-energy automobile；The remote monitoring platform (1) is used to receive battery information and warning information that the car networking terminal (2) sends, and judges battery charging state；The charging pile monitor terminal (3) is used to receive the cut-offing instruction of the remote monitoring platform (1) transmission, and controls charging operations.A kind of new energy car battery of the invention overcharges protection system and method, can effectively avoid the harm of over-charging of battery, greatly improves the safety of new-energy automobile charging.
Description
Technical field
The present invention relates to new-energy automobile charge field, in particular to a kind of new energy car battery overcharge protection system and
Method.
Background technique
With the continuous development of new-energy automobile industry, new-energy automobile charging safety is increasingly valued by people,
Over-charging of battery greatly affected the safety of new-energy automobile.New-energy automobile overcharges protection using battery management system in the market
(BMS) and after charging pile judges that battery fills with it, takes and is automatically stopped charging modes.But due to the open circuit of charging CAN line, communication
Interference, ECU failure etc. all may cause over-charging of battery phenomenon, so there are still safety caused by over-charging of battery currently on the market
Problem.
Summary of the invention
It is an object of the invention in view of the above-mentioned drawbacks in the prior art, provide a kind of new energy car battery to overcharge guarantor
Protecting system and method can effectively avoid the harm of over-charging of battery, greatly improve the safety of new-energy automobile charging.
In order to achieve the above-mentioned object of the invention, present invention employs following technical solutions: a kind of battery mistake of new-energy automobile
Fill protection system comprising remote monitoring platform, car networking terminal and charging pile monitor terminal；
The car networking terminal is used to acquire the battery information and warning message of new-energy automobile；
The remote monitoring platform is used to receive battery information and warning information that the car networking terminal is sent, and judges
Battery charging state；
The charging pile monitor terminal is used to receive the cut-offing instruction that the remote monitoring platform is sent, and controls charging behaviour
Make.
In order to achieve the above-mentioned object of the invention, the present invention additionally uses following technical solution: a kind of new energy car battery mistake
Fill guard method comprising following steps:
S1: the letter that car networking terminal is monitored to the battery information and warning message of new-energy automobile, and will monitor
Breath is sent to remote monitoring platform；
S2: remote monitoring platform receives the battery information and warning message, and judges battery charging state, battery charging
State includes charging normal condition, charging has expired state and charging abnormality, if battery is in charging normal condition, electricity
Pond continues to charge, and otherwise continues to judge battery charging state；
S3: if battery be in charging expire state and it is described charging expired state duration exceed overcharge setting duration
Or when charging abnormality, the remote monitoring platform sends cut-offing instruction to charging pile monitor terminal, stops charging.
In addition, the technical program further includes following attached technical scheme:
The battery information includes the total voltage of the SOC value of battery, the total current of battery and battery.
Judge battery whether be in charging expired state the following steps are included:
A: if the SOC value of battery reaches 100%, judging that battery is in charging at this time has expired state；If the SOC of battery
Value not up to 100%, then enter step B；
B: if to maintain a setting value within the set time constant for the SOC value of battery, judge that battery is at this time and fill
Electricity has expired state；If the SOC value of battery changes within the set time, C is entered step；
C: if the total current of battery is zero, judging that battery is in charging at this time has expired state；If the total current of battery is not
It is zero, then enters step D；
D: if the total voltage of battery reaches rated value, judging that battery is in charging at this time has expired state；If battery is total
Voltage is not up to rated value, then battery is in charging vacant state at this time, continues to charge.
The battery information further includes the temperature of battery, and the warning message includes vehicle trouble messages, the failure letter
Breath includes the failure of level fault, secondary failure, three-level fault and higher level.
Judge battery whether be in charging abnormality the following steps are included:
A: if the failure of three-level fault or higher level occurs for vehicle, judge that battery is in the abnormal shape of charging at this time
State；If the failure of three-level fault or higher level does not occur for vehicle, b is entered step；
B: if two kinds or more of secondary failure occurs for vehicle, judge that battery is in charging abnormality at this time；If vehicle
Two kinds and the above secondary failure do not occur, then enters step c；
C: if the insulating resistance value of battery is gradually increased and is more than setting extreme value, judge that it is different to be in charging for battery at this time
Normal state；If the insulating resistance value of battery is less than setting extreme value, d is entered step；
D: if the temperature rising curve trend anomaly of battery becomes larger and is more than setting changing value, judge that battery is at this time
Charge abnormality；If the temperature ascendant trend of battery is normal, e is entered step；
E: if the total voltage ascending curve trend anomaly of battery becomes larger and is more than setting changing value, judge at battery at this time
In charging abnormality；If the total voltage ascendant trend of battery is normal, judge that battery is in charging normal condition at this time.
Compared with the prior art, the invention has the advantages that: a kind of new energy car battery of the invention overcharges protection system
And method, the letter that is monitored by battery information and warning message of the car networking terminal to new-energy automobile, and will test
Breath be sent to remote monitoring platform, by remote monitoring platform judge battery be in charging expired and charge expired state persistently when
Between beyond when overcharging setting duration or charging abnormality or charging abnormality, and charging pile monitor terminal is issued disconnected
Electricity instruction, makes charging pile stop charging, so as to avoid the harm of over-charging of battery, greatly improves new-energy automobile charging
Safety.
Detailed description of the invention
Fig. 1 is the schematic diagram that a kind of new energy car battery of the invention overcharges protection system.
Fig. 2 is the flow chart that a kind of new energy car battery of the invention overcharges guard method.
Fig. 3 is to judge whether battery is in charging and has expired the flow chart of state in the present invention.
Fig. 4 is to judge whether battery is in the flow chart of charging abnormality in the present invention.
Specific embodiment
In conjunction with the preferred embodiment and its attached drawing is further non-limitingly described in detail technical solution of the present invention.
As shown in Figure 1, corresponding to a kind of new energy car battery of the invention overcharges protection system comprising long-range monitoring
Platform 1, car networking terminal 2 and charging pile monitor terminal 3.
Car networking terminal 2 is mounted on new-energy automobile, for acquiring the battery information and warning message of new-energy automobile.
Battery information includes the remaining capacity (hereinafter referred to as: SOC value) of battery, the total current of battery, the total voltage of battery, electricity
The insulating resistance value in pond and the temperature of battery, the temperature of battery include maximum temperature and minimum temperature.
Warning message includes vehicle trouble messages, the fault message include level fault, secondary failure, three-level fault with
And the failure of higher level.In the present embodiment, the warning message mainly acquired includes: 2 grades of monomer over-voltage, vehicle-mounted energy storage device
2 grades of over-voltage, SOC value be 2 grades excessively high, 3 grades of battery high-temperature, 3 grades of the battery temperature difference, 3 grades of insulation alarm, above-mentioned all fault levels be by
According to the fault level of " GB/T 32960-2016 electric car remote service and management system technical specification ".
Remote monitoring platform 1 is used to receive the battery information and warning information of the transmission of car networking terminal 2, and judges that battery fills
Electricity condition.
Charging pile monitor terminal 3 is mounted on charging pile, for receiving the cut-offing instruction of the transmission of remote monitoring platform 1, and
Control charging pile charging operations.
As shown in Fig. 2, a kind of new energy car battery overcharges guard method comprising following steps:
S1: the letter that car networking terminal 2 is monitored to the battery information and warning message of new-energy automobile, and will monitor
Breath is sent to remote monitoring platform 1；
S2: remote monitoring platform 1 receives battery information and warning message, and judges battery charging state, battery charging shape
State includes charging normal condition, charging has expired state and charging abnormality, if battery is in charging normal condition, battery
Continue to charge, otherwise continues to judge battery charging state；
S3: if battery be in charging expire state and charge expire state duration exceed overcharge set duration or
When the abnormality that charges, remote monitoring platform 1 sends cut-offing instruction to charging pile monitor terminal 3, stops charging.Specifically, exist
In the present embodiment, overcharging setting duration can be set according to actual conditions.
As shown in figure 3, judge battery whether be in charging expired state the following steps are included:
A: if the SOC value of battery reaches 100%, judging that battery is in charging at this time has expired state；If the SOC of battery
Value not up to 100%, then enter step B；
B: if to maintain a setting value within the set time constant for the SOC value of battery, judge that battery is at this time and fill
Electricity has expired state；If the SOC value of battery changes within the set time, C is entered step, wherein setting time and SOC
Setting value can change according to the actual situation；
C: when charging, the total current of battery is a negative value, and with the increase in charging time, the absolute value of electric current can be got over
It is next smaller, after being reduced to a value, the long time can be maintained, into trickle charge state, the total current of subsequent battery
It is kept to zero, at this time SOC value not necessarily 100% or setting value, but also can determine whether that battery is in charging at this time to have expired state；If
The total current of battery is not zero, then enters step D；
D: when charging, the total voltage of battery can be gradually increased, and the trend of increase is smaller and smaller, if the total voltage of battery reaches
To rated value, then judging that battery is in charging at this time has expired state；If the total voltage of battery is to reach rated value, at this time battery
It is in charging vacant state, continues to charge.
As shown in figure 4, judge battery whether be in charging abnormality the following steps are included:
A: if the failure of three-level fault or higher level occurs for vehicle, judge that battery is in the abnormal shape of charging at this time
State；If the failure of three-level fault or higher level does not occur for vehicle, b is entered step；
B: if two kinds or more of secondary failure occurs for vehicle, judge that battery is in charging abnormality at this time；If vehicle
Two kinds and the above secondary failure do not occur, then enters step c；
C: when charging, the insulating resistance value of battery can be gradually increased, if the insulating resistance value of battery is gradually increased and surpasses
When crossing setting extreme value, then judge that battery is in charging abnormality at this time；If the insulating resistance value of battery is less than setting extreme value,
Then enter step d；
D: when charging, the maximum temperature and minimum temperature of battery can be gradually increased, and the curvilinear trend of increase is smaller and smaller,
If the temperature rising curve trend anomaly of battery becomes larger and is more than setting changing value, judge that battery is in the abnormal shape of charging at this time
State；If battery temperature ascendant trend is normal, e is entered step；
E: when charging, the total voltage of battery can be gradually increased, and the curvilinear trend of increase is smaller and smaller, if total electricity of battery
Pressure ascending curve trend anomaly becomes larger and is more than setting changing value, then judges that battery is in charging abnormality at this time；If battery
Total voltage ascendant trend is normal, then judges that battery is in charging normal condition at this time.
A kind of new energy car battery of the invention overcharges protection system and method, by car networking terminal to new energy vapour
The battery information and warning message of vehicle are monitored, and the information that will test is sent to remote monitoring platform, by remotely monitoring
Platform judges that battery is in charging and expire state and charged with expire state duration and exceed to overcharge and sets duration or charging
Abnormality, and cut-offing instruction is issued to charging pile monitor terminal, so that charging pile is stopped charging, so as to avoid over-charging of battery
Harm greatly improves the safety of new-energy automobile charging.
It is pointed out that the technical concepts and features of above-mentioned preferred embodiment only to illustrate the invention, its object is to
Those skilled in the art can understand the contents of the present invention and implements accordingly, and protection of the invention can not be limited with this
Range.Any equivalent change or modification in accordance with the spirit of the invention should be covered by the protection scope of the present invention.
Claims (6)
1. a kind of over-charging of battery of new-energy automobile protects system, it is characterised in that: it includes remote monitoring platform (1), Che Lian
Network termination (2) and charging pile monitor terminal (3)；
The car networking terminal (2) is used to acquire the battery information and warning message of new-energy automobile；
The remote monitoring platform (1) is used to receive battery information and warning information that the car networking terminal (2) sends, and sentences
Disconnected battery charging state；
The charging pile monitor terminal (3) is used to receive the cut-offing instruction of the remote monitoring platform (1) transmission, and controls charging
Operation.
2. a kind of new energy car battery overcharges guard method, which is characterized in that itself the following steps are included:
S1: the information that car networking terminal (2) is monitored to the battery information and warning message of new-energy automobile, and will monitor
It is sent to remote monitoring platform (1)；
S2: remote monitoring platform (1) receives the battery information and warning message, and judges battery charging state, battery charging
State includes charging normal condition, charging has expired state and charging abnormality, if battery is in charging normal condition, electricity
Pond continues to charge, and otherwise continues to judge battery charging state；
S3: if battery be in charging expire state and it is described charging expire state duration exceed overcharge set duration or
When the abnormality that charges, the remote monitoring platform (1) sends cut-offing instruction to charging pile monitor terminal (3), stops charging.
3. overcharging guard method according to new energy car battery described in claim 2, it is characterised in that: the battery information includes
The total voltage of the SOC value of battery, the total current of battery and battery.
4. overcharging guard method according to new energy car battery described in claim 3, which is characterized in that judge whether battery is in
Charging expired state the following steps are included:
A: if the SOC value of battery reaches 100%, judging that battery is in charging at this time has expired state；If the SOC value of battery is not
Reach 100%, then enters step B；
B: if to maintain a setting value within the set time constant for the SOC value of battery, judge that battery has been in charging at this time
Full state；If the SOC value of battery changes within the set time, C is entered step；
C: if the total current of battery is zero, judging that battery is in charging at this time has expired state；If the total current of battery is not zero,
Then enter step D；
D: if the total voltage of battery reaches rated value, judging that battery is in charging at this time has expired state；If the total voltage of battery
Not up to rated value, then battery is in charging vacant state at this time, continues to charge.
5. overcharging guard method according to new energy car battery described in claim 2, it is characterised in that: the battery information also wraps
The temperature and insulating resistance value of battery are included, the warning message includes vehicle trouble messages, and the fault message includes level-one event
Barrier, secondary failure, three-level fault and higher level failure.
6. overcharging guard method according to new energy car battery described in claim 5, which is characterized in that judge whether battery is in
Charge abnormality the following steps are included:
A: if the failure of three-level fault or higher level occurs for vehicle, judge that battery is in charging abnormality at this time；If
The failure of three-level fault or higher level does not occur for vehicle, then enters step b；
B: if two kinds or more of secondary failure occurs for vehicle, judge that battery is in charging abnormality at this time；If vehicle is not
Two kinds and the above secondary failure occurs, then enters step c；
C: if the insulating resistance value of battery is gradually increased and is more than setting extreme value, judge that battery is in the abnormal shape of charging at this time
State；If the insulating resistance value of battery is less than setting extreme value, d is entered step；
D: if the temperature rising curve trend anomaly of battery becomes larger and is more than setting changing value, judge that battery is in charging at this time
Abnormality；If the temperature ascendant trend of battery is normal, e is entered step；
E: if the total voltage ascending curve trend anomaly of battery becomes larger and is more than setting changing value, judge that battery is at this time and fill
Electrical anomaly state；If the total voltage ascendant trend of battery is normal, judge that battery is in charging normal condition at this time.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910131856.5A CN109849735A (en) | 2019-02-22 | 2019-02-22 | A kind of new energy car battery overcharges protection system and method |
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| CN112277730A (en) * | 2020-10-29 | 2021-01-29 | 中国第一汽车股份有限公司 | Charging protection method and device for electric automobile, electric automobile and storage medium |
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Application publication date: 20190607 |
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