CN107472042A - A kind of electric automobile power output Automatic adjustment method - Google Patents
A kind of electric automobile power output Automatic adjustment method Download PDFInfo
- Publication number
- CN107472042A CN107472042A CN201610987742.7A CN201610987742A CN107472042A CN 107472042 A CN107472042 A CN 107472042A CN 201610987742 A CN201610987742 A CN 201610987742A CN 107472042 A CN107472042 A CN 107472042A
- Authority
- CN
- China
- Prior art keywords
- power output
- battery
- battery modules
- electric automobile
- management system
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
- B60L15/28—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed without contact making and breaking, e.g. using a transductor
-
- 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]
- B60L58/13—Maintaining the SoC within a determined range
-
- 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
-
- 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
-
- 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
- B60L2260/00—Operating Modes
- B60L2260/40—Control modes
- B60L2260/44—Control modes by parameter estimation
-
- 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
- Y02T10/72—Electric energy management in electromobility
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a kind of electric automobile power output automatic adjusting method, adjusts power output in real time, the change of reply access battery pack quantity, effectively avoids system protection failure.A kind of electric automobile power output Automatic adjustment method provided by the invention, applied to parallel battery module or expansible battery modules, including：Confirm battery modules connection number；Battery modules state-of-charge is obtained, calculates peak power output；Entire car controller adjusts power output.
Description
Technical field
The present invention relates to electric automobile and its power management Design technical field, more particularly to a kind of electric automobile power output is certainly
Dynamic adjusting method.
Background technology
Electric automobile is increasingly valued by people, its distance travelled be also always the parameter be concerned about the most of consumer it
One, when the specified course continuation mileage of automobile can not meet customer need, customer selecting is extended to battery bag or batteries in parallel connection bag comes
Increase distance travelled, but because system uses multiple battery bag Parallel opertations, therefore the fan-out capability of system is by access battery bag
Gross energy determine, when access battery pack it is more when, output energy is with regard to big, and performance onboard is exactly to start soon, and speed is fast, mileage
It is long, on the contrary output energy will be reduced.And lithium battery system be vehicle particularly electric machine with energy, it is necessary to meet the work(of motor
Rate requirement, when the battery bag of access is reduced, if power output can not be reduced in time, it may result in battery pack excessively stream guarantor
Shield, overvoltage protection, under-voltage protection, influence user's use.
The content of the invention
The embodiments of the invention provide a kind of electric automobile power output automatic adjusting method, power output is adjusted in real time,
The change of reply access battery pack quantity, effectively avoids system protection failure.
A kind of electric automobile power output automatic adjusting method that the embodiment of the present invention is provided, applied to parallel battery
Module or expansible battery modules, including：Confirm battery modules connection number；Battery modules state-of-charge is obtained, is calculated maximum
Power output；Entire car controller adjusts power output.
Wherein, the confirmation battery modules connection number includes, and battery management system obtains battery modules connection shape in real time
State, confirm the battery modules number normally connected.
Wherein, the acquisition battery modules state-of-charge includes, and slave battery management system obtains monomer in battery modules
Battery core voltage, calculate the battery modules state-of-charge.
Wherein, the calculating peak power output includes, and slave battery management system is charged according to the battery modules
State and battery temperature calculate the current peak power output of each battery modules, and master battery management system further calculates
The peak power output of whole battery modules.
Wherein, the entire car controller adjustment power output includes, and the master battery management system is sent to full-vehicle control
One power limit parameter of device, the entire car controller calculate the power demand of Full Vehicle System, and dynamic adjusts motor driver
Power output.
A kind of electric automobile power output Automatic adjustment method provided by the invention, applied to parallel battery module or can
Battery modules are extended, power output is adjusted according to the gross energy of the battery modules of access in real time, effectively avoid system protection event
Barrier.
Brief description of the drawings
Fig. 1 show a kind of flow chart of electric automobile power output Automatic adjustment method provided in an embodiment of the present invention.
Fig. 2 show a kind of structural representation of batteries of electric automobile module integrated connection of one embodiment of the invention offer
Figure.
Fig. 3 show a kind of structural representation of batteries of electric automobile module integrated connection of one embodiment of the invention offer
Figure.
Fig. 4 show a kind of structural representation of batteries of electric automobile module integrated connection of one embodiment of the invention offer
Figure.
Embodiment
Below in conjunction with accompanying drawing, the embodiment of the embodiment of the present invention is clearly and completely described.
Fig. 1 show a kind of flow chart of electric automobile power output Automatic adjustment method provided in an embodiment of the present invention.
As shown in figure 1, the electric automobile power output Automatic adjustment method includes：
Step 101：Confirm battery modules connection number.
Slave battery management system is installed in each battery modules, for detecting single battery core state in battery modules,
Including battery core voltage, electric current and temperature.
Meanwhile master battery management system communicates to connect with entire car controller and slave battery management system, receives vehicle control
Device order processed controls the discharge and recharge of battery modules by slave battery management system.
Wherein, communication connection includes CAN communications, RS485, LIN, or short-distance wireless communication.Communication bus provides vehicle
In controller and battery modules between battery management system, and the communication between each battery management system.Entire car controller leads to
Cross and information is transmitted between communication bus and battery modules.
Electric in low pressure after automobile starting, slave battery management system monitors respective battery modules state, main battery management system
System communicates with slave battery management, confirms whether the battery modules of connection are normal.After the battery modules number that confirmation normally connects,
Whole battery modules enter readiness for operation.
Step 201：Battery modules state-of-charge is obtained, calculates peak power output.
Single battery core voltage in slave battery management system monitoring battery modules, obtains single battery core voltage in battery modules
Afterwards, the state-of-charge of each battery modules is calculated, and combines the temperature of the battery modules obtained, is further calculated each
The current peak power output of battery modules.
Master battery management system gets the current maximum work output of each battery modules by slave battery management system
Rate, conformity calculation draw the peak power output of whole battery modules.
Wherein, current integration method or open-circuit voltage can be used when slave battery management system calculates battery modules state-of-charge
Standardization.
Step 301：Entire car controller adjusts power output.
Entire car controller communicates to connect with master battery management system, and master battery management system calculates overall maximum output
After power, one power limit parameter of entire car controller is sent to, entire car controller calculates the power demand of Full Vehicle System, dynamic
Adjust the power output of motor driver.
In embodiments of the present invention, battery management system confirms the battery modules number of normal access Full Vehicle System, and counts
The peak power output of whole battery modules is calculated, entire car controller adjusts defeated in real time according to the gross energy of the battery modules of acquisition
Go out power, effectively avoid system protection failure.
Fig. 2 show a kind of structural representation of batteries of electric automobile module integrated connection in the embodiment of the present invention.Such as Fig. 2
Shown, vehicle is connected with 4 battery modules altogether, and electric in low pressure after automobile starting, battery management system confirms 4 by monitoring
Individual battery modules are in normal connection status, and it is 10KW that the current peak power output of each battery modules, which is calculated, electricity
Pond management system further confirms that integral battery door module gross output is 40KW, and sends to entire car controller, full-vehicle control
The maximum drive power of device controlled motor driver is 40KW.
Battery management system monitors in real time obtains battery modules connection status, when battery modules connect failure and vehicle
After connection disconnects, battery management system confirms that connection number is 2, recalculates whole battery modules peak power output, and
Communicated with entire car controller, entire car controller dynamic adjusts power output, and the maximum drive power of controlled motor driver is
20KW, it effectively prevent the protection failure of system.As shown in Figure 3.
Fig. 4 show the structural representation that batteries of electric automobile module is connected in one embodiment of the invention.Fig. 4 institutes
State, vehicle is connected with 4 battery modules altogether, and after automobile starting, battery management system confirms that 4 battery modules are equal by monitoring
In normal connection status, peak power output that slave battery management system calculates each battery modules be respectively 10KW,
8KW, 8KW and 6KW, master battery management system further confirm that integral battery door module gross output is 32KW, and send to whole
Vehicle controller, the maximum drive power of vehicle control unit controls motor driver is 32KW.
A kind of electric automobile power output Automatic adjustment method provided by the invention, applied to parallel battery module or can
Battery modules are extended, the gross energy of the battery modules for the access that entire car controller monitors according to battery management system adjusts in real time
Power output, effectively avoid system protection failure.
The above embodiments merely illustrate the technical concept and features of the present invention, is not intended to limit the invention, all in this hair
Bright spiritual and any modification within principle, made, equivalent substitution etc., should be included in the scope of the protection.
Claims (5)
1. a kind of electric automobile power output Automatic adjustment method, applied to parallel battery module or expansible battery modules,
It is characterised in that it includes：
Confirm battery modules connection number；
Battery modules state-of-charge is obtained, calculates peak power output；
Entire car controller adjusts power output.
2. electric automobile power output Automatic adjustment method according to claim 1, it is characterised in that the confirmation battery
Module connection number includes, and battery management system obtains battery modules connection status in real time, confirms the battery normally connected
Module number.
3. electric automobile power output Automatic adjustment method according to claim 1, it is characterised in that the acquisition battery
Module state-of-charge includes, and slave battery management system obtains single battery core voltage in battery modules, calculates the battery modules
State-of-charge.
4. electric automobile power output Automatic adjustment method according to claim 1, it is characterised in that described to calculate maximum
Power output includes, and slave battery management system is according to the calculating of the state-of-charge and battery temperature of the battery modules is each
The current peak power output of battery modules, master battery management system further calculate the maximum work output of whole battery modules
Rate.
5. electric automobile power output Automatic adjustment method according to claim 1, it is characterised in that the full-vehicle control
Device adjustment power output includes, and the master battery management system is sent to one power limit parameter of entire car controller, described whole
Vehicle controller calculates the power demand of Full Vehicle System, and dynamic adjusts the power output of motor driver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610987742.7A CN107472042B (en) | 2016-11-10 | 2016-11-10 | Automatic output power adjusting method for electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610987742.7A CN107472042B (en) | 2016-11-10 | 2016-11-10 | Automatic output power adjusting method for electric automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107472042A true CN107472042A (en) | 2017-12-15 |
| CN107472042B CN107472042B (en) | 2022-09-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610987742.7A Active CN107472042B (en) | 2016-11-10 | 2016-11-10 | Automatic output power adjusting method for electric automobile |
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| Country | Link |
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| CN (1) | CN107472042B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108454408A (en) * | 2018-04-12 | 2018-08-28 | 福泰动力有限公司 | power supply system and electric vehicle |
| CN108471151A (en) * | 2018-04-12 | 2018-08-31 | 福泰动力有限公司 | Power supply system and driving method |
| CN109515283A (en) * | 2018-10-12 | 2019-03-26 | 蔚来汽车有限公司 | Energy management apparatus and method and movable charging vehicle for movable charging vehicle |
| WO2023206483A1 (en) * | 2022-04-29 | 2023-11-02 | 时代电服科技有限公司 | Battery management method, battery management unit, and electric device |
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| CN1547037A (en) * | 2003-11-28 | 2004-11-17 | 清华大学 | Electric loading state-output voltage characteristic curve on-line updating method for storage battery |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108454408A (en) * | 2018-04-12 | 2018-08-28 | 福泰动力有限公司 | power supply system and electric vehicle |
| CN108471151A (en) * | 2018-04-12 | 2018-08-31 | 福泰动力有限公司 | Power supply system and driving method |
| CN109515283A (en) * | 2018-10-12 | 2019-03-26 | 蔚来汽车有限公司 | Energy management apparatus and method and movable charging vehicle for movable charging vehicle |
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| WO2023206483A1 (en) * | 2022-04-29 | 2023-11-02 | 时代电服科技有限公司 | Battery management method, battery management unit, and electric device |
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| Publication number | Publication date |
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| CN107472042B (en) | 2022-09-20 |
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Effective date of registration: 20191106 Address after: 201612 Room 302, building 16, No. 518, shenzhuan Road, Songjiang hi tech park, Caohejing Development Zone, Songjiang District, Shanghai Applicant after: FIREBRIGHT1 GREEN ENERGY(SHANGHAI) Ltd. Address before: 201612 Shanghai City, Songjiang District Songjiang Caohejing Shanghai hi tech park Xinzhuan Highway No. 518, building 16, room 701 Applicant before: SHANGHAI DINGYAN INTELLIGENT TECHNOLOGY Co.,Ltd. |
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