CN110509813A - A kind of batteries of electric automobile fire alarm method - Google Patents
A kind of batteries of electric automobile fire alarm method Download PDFInfo
- Publication number
- CN110509813A CN110509813A CN201910826409.1A CN201910826409A CN110509813A CN 110509813 A CN110509813 A CN 110509813A CN 201910826409 A CN201910826409 A CN 201910826409A CN 110509813 A CN110509813 A CN 110509813A
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- Prior art keywords
- battery
- batteries
- electric automobile
- temperature
- fire alarm
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Classifications
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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
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
-
- 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
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/04—Cutting off the power supply under fault conditions
-
- 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
-
- 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
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/421—Speed
-
- 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
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/423—Torque
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a kind of batteries of electric automobile fire alarm methods, include the following steps: step 1, start to receive detection data and the storage of battery temperature sensor after battery management system BMS work 40s~80s, read every 5~7s primary；The temperature T ' read before current battery temperature T and 1min is compared by step 2, BMS；Step 3, if T-T ' >=T0DEG C, then BMS issues alarm signal to vehicular meter, and issues the too fast signal of temperature increase rate to entire car controller；Step 4, vehicular meter carry out sound-light alarm；Entire car controller is then in time T1Demand revolving speed and demand torque of the interior linear reduction to motor, time T2BMS automatically cuts off battery supply afterwards；After electric vehicle starting, battery management system can monitor the temperature of battery in real time, when battery temperature temperature rise per minute is more than T0DEG C when, then sounded an alarm by vehicular meter, while in time T2It cuts off the power rapidly afterwards, notifies driver and passengers inside the car to withdraw before on fire, avoid accident.
Description
Technical field
The present invention relates to a kind of electric vehicle battery management method more particularly to a kind of batteries of electric automobile fire alarm sides
Method.
Background technique
The new energy vehicle for carrying lithium-ion-power cell at present is more and more, and the technical level of current lithium battery, nothing
Method guarantees the safety of battery, the accidents such as some electric vehicle kindlings often occurs, since most of vehicle does not have lithium battery
Fire gives warning in advance system, substantially just removes processing vehicle after driver's discovery is smoldered and flees from vehicle, leaves driver for
The escape time of member is limited, and the cigarette that lithium battery is discharged belongs to toxic gas, and driver sucks excessive flue gas, may
The case where appearance loses consciousness, it is abnormally dangerous.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of batteries of electric automobile of vehicle dangerous situation that can give warning in advance
Fire alarm method.
In order to solve the above technical problems, the technical scheme is that a kind of batteries of electric automobile fire alarm method, packet
Include following step:
The battery management system BMS of step 1, electric vehicle starts, and starts to receive battery temperature biography after the 40s~80s that works
The detection data of sensor and storage are read primary every 5~7s；
Step 2, after battery management system BMS reads the Current Temperatures T of battery every time, by current battery temperature T and 1min
The temperature T ' of preceding reading is compared；
Step 3, if T-T ' >=T0DEG C, then battery management system BMS issues alarm signal to vehicular meter, and to whole
Vehicle controller issues the too fast signal of temperature increase rate；
Step 4, vehicular meter carry out sound-light alarm prompt driver's vehicle and catastrophe failure occur；Meanwhile full-vehicle control
Device is then in time T1Demand revolving speed and demand torque of the interior linear reduction to motor, to reduce speed and dynamic property, time T2It is electric afterwards
Pond management system BMS automatically cuts off battery supply.
As a kind of perferred technical scheme, in said step 1, battery management system BMS reads battery temperature sensing
The time interval of device detection data is 6s.
As a kind of perferred technical scheme, in the step 3, temperature T0Not less than 4 DEG C and it is not more than 6 DEG C.
As a kind of perferred technical scheme, in the step 4, time T1Not less than 15S and it is not more than 25S.
As a kind of perferred technical scheme, in the step 4, time T1For 20S.
As a kind of perferred technical scheme, in the step 4, time T2Not less than 15S and it is not more than 25S.
As a kind of perferred technical scheme, in the step 4, time T2For 20S.
As a kind of perferred technical scheme, in said step 1, the battery management system BMS work of electric vehicle
Start the detection data of reception battery temperature sensor and storage after 60s.
By adopting the above-described technical solution, a kind of batteries of electric automobile fire alarm method, includes the following steps: step
One, the battery management system BMS of electric vehicle starts, and starts the testing number for receiving battery temperature sensor after the 40s~80s that works
According to and store, read every 5~7s primary；Step 2 will after battery management system BMS reads the Current Temperatures T of battery every time
The temperature T ' read before current battery temperature T and 1min is compared；Step 3, if T-T ' >=T0DEG C, then battery management system
BMS unite to vehicular meter sending alarm signal, and the signal too fast to entire car controller sending temperature increase rate；Step 4,
Vehicular meter carries out sound-light alarm prompt driver's vehicle and catastrophe failure occurs；Meanwhile entire car controller is then in time T1It is interior
Demand revolving speed and demand torque of the linear reduction to motor, to reduce speed and dynamic property, time T2Battery management system BMS afterwards
Automatically cut off battery supply；After electric vehicle starting, battery management system can monitor the temperature of battery in real time, when battery temperature is every
Minute temperature rise is more than T0DEG C when, then sounded an alarm by vehicular meter, while in time T2It cuts off the power rapidly afterwards, before on fire
It notifies driver and passengers inside the car to withdraw, avoids accident.
Detailed description of the invention
The following drawings are only intended to schematically illustrate and explain the present invention, not delimit the scope of the invention.Wherein:
Fig. 1 is the work flow diagram of the embodiment of the present invention.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention is further explained.In the following detailed description, only pass through explanation
Mode describes certain exemplary embodiments of the invention.Undoubtedly, those skilled in the art will recognize, In
In the case where without departing from the spirit and scope of the present invention, described embodiment can be repaired with a variety of different modes
Just.Therefore, attached drawing and description are regarded as illustrative in nature, and are not intended to limit the scope of the claims.
A kind of batteries of electric automobile fire alarm method, as shown in Figure 1, including the following steps:
Step 1, the battery management system BMS starting of electric vehicle, starts to receive after work 40s~80s (preferably 60s)
The detection data of battery temperature sensor and storage are read primary every 5~7s；Battery management system BMS reads battery temperature
The preferred 6s of the time interval of sensor detection data；Reading data interval, which can according to need, to be set, and time interval is smaller,
It is more accurate to monitor；Battery management system BMS only stores the temperature data in 2~5 minutes；
Step 2, after battery management system BMS reads the Current Temperatures T of battery every time, by current battery temperature T and 1min
The temperature T ' of preceding reading is compared；
Step 3, if T-T ' >=T0DEG C, then battery management system BMS issues alarm signal to vehicular meter, and to whole
Vehicle controller issues the too fast signal of temperature increase rate；
Temperature T0Not less than 4 DEG C and it is not more than 6 DEG C；If temperature T0The data of selection are too small, then are easy to appear false alarm,
If temperature T0The data of selection are too big, then are easy to appear the case where can not detecting temperaturing lifting abnormality in time, so just going out temperature T0
5 DEG C or so of selection is advisable；
Step 4, vehicular meter carry out sound-light alarm prompt driver's vehicle and catastrophe failure occur；Meanwhile full-vehicle control
Device is then in time T1Demand revolving speed and demand torque of the interior linear reduction to motor, to reduce speed and dynamic property, time T2It is electric afterwards
Pond management system BMS automatically cuts off battery supply.
Time T1Not less than 15S and it is not more than 25S.Time T1For 20S.Time T2Not less than 15S and it is not more than 25S.Time
T2For 20S.When detecting that abnormal temperature increases, in time T1Interior, entire car controller switchs to motor from high-speed cruising state low
Speed, while in time T2After will cut off the power to motor, so in access time T1With time T2Numerical value when, time T2It is greater than
Equal to time T1, and the difference of the two will be lower than 5s.
Battery management system BMS real-time monitoring battery temperature rise rate situation, before general batteries caught fire, battery temperature can be first fast
Fast abnormal rising first passes through the prompt of vehicular meter sound-light alarm, simultaneously after battery management system BMS detects such case
It executes vehicle and drops power, cut off motor power after about 20s.
Fire alarm method of the present invention can judge that battery will catch fire within fire occurs first 2 minutes,
By vehicular meter sound-light alarm mode, driver's pulling over observing as early as possible is allowed, it is flame-out and flee from, it leaves time enough for and goes to escape
It is raw.
Fire alarm method of the present invention can give warning in advance electric automobile lithium battery fire condition, reduce because of electricity
Casualties caused by pond catches fire, vehicle safety improve, and improve the company car market competitiveness.It is adopted substantially in industry at present
It is just alarmed with when battery temperature >=60 DEG C, there are hysteresis qualitys, and are only needed using fire alarm method of the present invention
Battery management system BMS program is modified, without increasing hardware facility, to production cost substantially without increase, application prospect is wide
It is wealthy.
The above shows and describes the basic principle, main features and advantages of the invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (8)
1. a kind of batteries of electric automobile fire alarm method, which is characterized in that include the following steps:
The battery management system BMS of step 1, electric vehicle starts, and starts to receive battery temperature sensor after the 40s~80s that works
Detection data and storage, read every 5~7s primary；
Step 2 after battery management system BMS reads the Current Temperatures T of battery every time, will be read before current battery temperature T and 1min
The temperature T ' taken is compared；
Step 3, if T-T ' >=T0DEG C, then battery management system BMS issues alarm signal to vehicular meter, and to full-vehicle control
Device issues the too fast signal of temperature increase rate；
Step 4, vehicular meter carry out sound-light alarm prompt driver's vehicle and catastrophe failure occur；Meanwhile entire car controller is then
In time T1Demand revolving speed and demand torque of the interior linear reduction to motor, to reduce speed and dynamic property, time T2Cell tube afterwards
Reason system BMS automatically cuts off battery supply.
2. batteries of electric automobile fire alarm method as described in claim 1, which is characterized in that in said step 1, electricity
The time interval that pond management system BMS reads battery temperature sensor detection data is 6s.
3. batteries of electric automobile fire alarm method as described in claim 1, which is characterized in that in the step 3, temperature
Spend T0Not less than 4 DEG C and it is not more than 6 DEG C.
4. batteries of electric automobile fire alarm method as described in claim 1, which is characterized in that in the step 4, when
Between T1Not less than 15S and it is not more than 25S.
5. batteries of electric automobile fire alarm method as claimed in claim 4, which is characterized in that in the step 4, when
Between T1For 20S.
6. batteries of electric automobile fire alarm method as described in claim 1, which is characterized in that in the step 4, when
Between T2Not less than 15S and it is not more than 25S.
7. batteries of electric automobile fire alarm method as claimed in claim 6, which is characterized in that in the step 4, when
Between T2For 20S.
8. the batteries of electric automobile fire alarm method as described in claim 1~7 any claim, which is characterized in that In
In the step 1, start to receive the testing number of battery temperature sensor after the battery management system BMS work 60s of electric vehicle
According to and store.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910826409.1A CN110509813A (en) | 2019-09-03 | 2019-09-03 | A kind of batteries of electric automobile fire alarm method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910826409.1A CN110509813A (en) | 2019-09-03 | 2019-09-03 | A kind of batteries of electric automobile fire alarm method |
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| Publication Number | Publication Date |
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| CN110509813A true CN110509813A (en) | 2019-11-29 |
Family
ID=68630500
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910826409.1A Pending CN110509813A (en) | 2019-09-03 | 2019-09-03 | A kind of batteries of electric automobile fire alarm method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111942287A (en) * | 2020-08-17 | 2020-11-17 | 广州小鹏汽车科技有限公司 | Vehicle control method, control device, and storage medium |
| CN112161712A (en) * | 2020-09-29 | 2021-01-01 | 上海汽车工业(集团)总公司 | All-weather temperature monitoring system for electric automobile |
| CN112186856A (en) * | 2020-09-30 | 2021-01-05 | 徐州徐工挖掘机械有限公司 | Control system and method for preventing fire caused by overload of battery wire |
| CN116009507A (en) * | 2022-12-01 | 2023-04-25 | 中叉新能源重工(山东)有限公司 | VCU control method, equipment and medium of electric loader |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111942287A (en) * | 2020-08-17 | 2020-11-17 | 广州小鹏汽车科技有限公司 | Vehicle control method, control device, and storage medium |
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| CN116009507A (en) * | 2022-12-01 | 2023-04-25 | 中叉新能源重工(山东)有限公司 | VCU control method, equipment and medium of electric loader |
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Application publication date: 20191129 |