CN113386620A - BMS intelligence battery management control system suitable for new forms of energy car - Google Patents
BMS intelligence battery management control system suitable for new forms of energy car Download PDFInfo
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- 229910052744 lithium Inorganic materials 0.000 abstract description 14
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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
- 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
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The invention relates to a battery management control system, in particular to a BMS intelligent battery management control system suitable for a new energy vehicle, which realizes the judgment of the validity of a system power-on signal and the current state of the system by the cooperation of a signal validity judgment module and a state validity judgment module, and powers on based on the valid system power-on signal and the stable state of the system, thereby releasing the work burden of a VCU core electronic control unit and avoiding the situation that the BMS battery management system delays power on; the lithium battery is effectively monitored by setting a reasonable monitoring mode, and the service life of the BMS battery management system is further prolonged on the premise of effectively monitoring the lithium battery; the technical scheme provided by the invention can effectively overcome the defects that the BMS battery management system delays power-on and cannot set a reasonable monitoring mode aiming at the lithium battery in the prior art.
Description
Technical Field
The invention relates to a battery management control system, in particular to a BMS intelligent battery management control system suitable for a new energy vehicle.
Background
With the continuous progress of society, the petroleum resources are increasingly reduced, the atmospheric environmental pollution is gradually increased, some countries successively publish the time for forbidding the use of fossil fuel automobiles, new energy resources are explosively developed, and lithium batteries have the advantages of high charging speed, high energy density and the like as carriers of new energy resources, and are widely applied to electric cars, electric buses, electric vans, electric taxis, two-wheeled electric bicycles and the like.
The high charging speed and the high energy density are necessary technologies for ensuring the continuous running of the new energy automobile, and especially the energy storage density is improved. Along with the continuous development of technique, the energy storage density of current lithium cell is higher and higher, and BMS battery management system is the key technique of lithium cell protection, can effectively monitor lithium cell operating condition, prevents that abnormal danger from taking place to the life of extension lithium cell has wide market potential and development space.
However, most of the existing BMS battery management systems rely on the VCU core electronic control unit during power-on, which increases the workload of the VCU core electronic control unit, and the BMS battery management system is prone to delay power-on after long-term use. In addition, BMS battery management system can start always when the new forms of energy car goes, but under the environment of stable driving, the operating condition of battery in a certain period also maintains relatively stable, consequently sets up reasonable monitoring mode to the lithium cell and can effectively prolong BMS battery management system's life.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects in the prior art, the invention provides the BMS intelligent battery management control system suitable for the new energy vehicle, which can effectively overcome the defects that the BMS battery management system delays power-on and cannot set a reasonable monitoring mode for a lithium battery in the prior art.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme:
BMS intelligence battery management control system suitable for new forms of energy car, including the controller to and
the first signal detection module is used for detecting a system power-on signal;
the second signal detection module is used for detecting the system power-on signal again according to the current fault level of the system;
the signal effectiveness judging module is used for judging whether the power-on signal of the system is effective or not according to the detection results of the first signal detection module and the second signal detection module and sending the power-on signal to the state initialization module or the high-voltage pre-charging module;
the state initialization module is used for initializing the state of the system according to the validity of the power-on signal of the system;
the fault information acquisition module is used for acquiring fault information according to the current state of the system and sending the fault information to the fault grade judgment module;
the fault grade judging module is used for judging the current fault grade of the system according to the fault information and sending the current fault grade to the second signal detecting module;
the high-voltage pre-charging module is used for performing high-voltage pre-charging according to the effectiveness of the power-on signal of the system;
the state validity judging module is used for judging whether the system enters an initialization state and a high-voltage pre-charging state or not and sending the current state of the system to the fault information acquisition module or the high-voltage power-on module;
the high-voltage electrifying module is used for carrying out high-voltage electrifying according to the current state of the system;
the state continuity detection module is used for judging whether the current working state of the power supply is safe or not according to the working state parameters of the power supply;
and the direct current voltage reduction module is used for entering an awakening state according to the current working state of the power supply, synchronously awakening the system when the power supply is awakened by self, and simultaneously carrying out voltage reduction regulation when the power supply is in an abnormal working state.
Preferably, when the signal validity judging module judges that the system power-on signal detected by the first signal detecting module exceeds the time threshold, the signal validity judging module judges that the system power-on signal detected by the first signal detecting module is valid and sends the system power-on signal to the state initializing module;
when the signal effectiveness judging module judges that the second signal detecting module collects the system electrifying signal, the signal effectiveness judging module judges that the system electrifying signal detected by the second signal detecting module is effective and sends the system electrifying signal to the high-voltage pre-charging module.
Preferably, the state initialization module initializes the state of the system when receiving valid information of a power-on signal of the system, and the state validity judgment module judges whether the system enters an initialization state or not and sends the current state of the system to the fault information acquisition module;
the high-voltage pre-charging module carries out high-voltage pre-charging when receiving effective information of a system power-on signal, and the state effectiveness judging module judges whether the system enters a high-voltage pre-charging state or not and sends the current state of the system to the high-voltage upper-voltage pre-charging module.
Preferably, the fault information acquisition module receives the fault information acquired when the system is currently in an initialization state, and the fault grade judgment module judges the current fault grade of the system according to the fault information;
and if the current fault level is smaller than the fault level threshold value, the second signal detection module detects the system power-on signal again, otherwise, the second signal detection module stops detecting the system power-on signal, and the controller sends out fault alarm information.
Preferably, the method further comprises the following steps:
the active awakening information setting module is used for setting awakening interval time, awakening duration time and awakening mode according to the current working state of the power supply and forming active awakening information;
the active wake-up information sending module is used for sending active wake-up information to the direct current voltage reduction module;
and the passive wake-up information sending module is used for sending passive wake-up information to the controller when the direct current voltage reduction module wakes up.
Preferably, the state continuity detection module detects the current voltage, load and temperature of the power supply and judges whether the current working state of the power supply is safe;
if the current voltage, the load and the temperature of the power supply are all smaller than the corresponding threshold values, the state continuity detection module judges that the power supply is in a safe working state at present, the system carries out a dormant state after sending active awakening information to the direct current voltage reduction module, otherwise, the state continuity detection module judges that the power supply is in an abnormal working state at present, and the controller sends abnormal alarm information.
Preferably, when the state continuity detection module judges that the power supplies are in the safe working state within a period of time, the active awakening information setting module synchronously prolongs the awakening interval time and the awakening duration time; otherwise, the active awakening information setting module synchronously shortens the awakening interval time and the awakening duration time.
Preferably, when the state continuity detection module determines that the power supplies are all in the safe working state within a period of time, the active wake-up information setting module switches the wake-up mode into a long-period wake-up mode for performing fixed wake-up according to the extended wake-up interval time and wake-up duration; otherwise, the active awakening information setting module switches the awakening mode into a single awakening mode which is according to the shortened awakening interval time and the awakening duration time and continues to shorten the time when awakening next time.
(III) advantageous effects
Compared with the prior art, the BMS intelligent battery management control system suitable for the new energy vehicle realizes the judgment of the effectiveness of the system power-on signal and the current state of the system by the cooperation of the signal effectiveness judgment module and the state effectiveness judgment module, and the power-on is carried out based on the effective system power-on signal and the stable state of the system, so that the work burden of a VCU core electronic control unit is relieved, and the condition that the BMS battery management system delays power-on is avoided; through setting up reasonable monitoring mode and effectively monitoring the lithium cell, under the prerequisite of effectively monitoring the lithium cell, further prolonged BMS battery management system's life.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a block diagram of a system according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A BMS intelligent battery management control system suitable for new energy vehicles, as shown in figure 1, comprises a controller, and
the first signal detection module is used for detecting a system power-on signal;
the second signal detection module is used for detecting the system power-on signal again according to the current fault level of the system;
the signal effectiveness judging module is used for judging whether the power-on signal of the system is effective or not according to the detection results of the first signal detection module and the second signal detection module and sending the power-on signal to the state initialization module or the high-voltage pre-charging module;
the state initialization module is used for initializing the state of the system according to the validity of the power-on signal of the system;
the fault information acquisition module is used for acquiring fault information according to the current state of the system and sending the fault information to the fault grade judgment module;
the fault grade judging module is used for judging the current fault grade of the system according to the fault information and sending the current fault grade to the second signal detecting module;
the high-voltage pre-charging module is used for performing high-voltage pre-charging according to the effectiveness of the power-on signal of the system;
the state validity judging module is used for judging whether the system enters an initialization state and a high-voltage pre-charging state or not and sending the current state of the system to the fault information acquisition module or the high-voltage power-on module;
and the high-voltage electrifying module is used for carrying out high-voltage electrifying according to the current state of the system.
When the signal validity judging module judges that the system power-on signal detected by the first signal detecting module exceeds the time threshold, the signal validity judging module judges that the system power-on signal detected by the first signal detecting module is valid and sends the system power-on signal to the state initializing module.
The state initialization module initializes the system when receiving the effective information of the power-on signal of the system, and the state effectiveness judgment module judges whether the system enters an initialization state or not and sends the current state of the system to the fault information acquisition module.
The fault information acquisition module acquires fault information when receiving that the system is currently in an initialization state, and the fault grade judgment module judges the current fault grade of the system according to the fault information. If the current fault level is smaller than the fault level threshold value, the second signal detection module detects the system power-on signal again; otherwise, the second signal detection module stops detecting the power-on signal of the system, and the controller sends out fault alarm information.
When the signal effectiveness judging module judges that the system power-on signal is collected by the second signal detecting module, the signal effectiveness judging module judges that the system power-on signal detected by the second signal detecting module is effective and sends the effective system power-on signal to the high-voltage pre-charging module.
The high-voltage pre-charging module carries out high-voltage pre-charging when receiving effective information of a system power-on signal, the state validity judging module judges whether the system enters a high-voltage pre-charging state or not and sends the current state of the system to the high-voltage power-on module, and the high-voltage power-on module carries out high-voltage power-on when the system enters the high-voltage pre-charging state.
According to the technical scheme, the validity of the power-on signal of the system and the current state of the system are judged by the aid of the signal validity judging module and the state validity judging module in a matched mode, the power-on signal of the system and the stable state of the system are effectively judged, the workload of a VCU core electronic control unit is relieved, and the situation that the BMS battery management system delays power-on is avoided.
In the technical scheme of this application, still include:
the state continuity detection module is used for judging whether the current working state of the power supply is safe or not according to the working state parameters of the power supply;
the direct current voltage reduction module is used for entering an awakening state according to the current working state of the power supply, synchronously awakening the system when the power supply is awakened by itself, and simultaneously performing voltage reduction regulation when the power supply is in an abnormal working state;
the active awakening information setting module is used for setting awakening interval time, awakening duration time and awakening mode according to the current working state of the power supply and forming active awakening information;
the active wake-up information sending module is used for sending active wake-up information to the direct current voltage reduction module;
and the passive wake-up information sending module is used for sending passive wake-up information to the controller when the direct current voltage reduction module wakes up.
The state continuity detection module detects the current voltage, load and temperature of the power supply and judges whether the current working state of the power supply is safe or not. If the current voltage, the load and the temperature of the power supply are all smaller than the corresponding threshold values, the state continuity detection module judges that the power supply is in a safe working state at present, and the system carries out a sleep state after sending active awakening information to the direct current voltage reduction module. Otherwise, the state continuity detection module judges that the power supply is in an abnormal working state at present, and the controller sends out abnormal alarm information.
When the state continuity detection module judges that the power supplies are in a safe working state within a period of time, the active awakening information setting module synchronously prolongs the awakening interval time and the awakening duration time; otherwise, the active awakening information setting module synchronously shortens the awakening interval time and the awakening duration time.
When the state continuity detection module judges that the power supplies are in a safe working state within a period of time, the active awakening information setting module switches the awakening mode into a long-period awakening mode which is fixedly awakened according to the prolonged awakening interval time and the awakening duration time; otherwise, the active awakening information setting module switches the awakening mode into a single awakening mode according to the shortened awakening interval time and the awakening duration time, and continues to shorten the time when awakening next time.
In the technical scheme, when the state continuity detection module judges that the power supply is in the safe working state within a period of time, the active awakening information setting module synchronously prolongs the awakening interval time and the awakening duration time, and switches the awakening mode into the long-period awakening mode. In the long-period wake-up mode, the interval time and the duration of each wake-up are respectively the prolonged wake-up interval time and the prolonged wake-up duration.
When the state continuity detection module judges that the power supply is in an abnormal working state, the controller immediately controls the active awakening information setting module to switch the awakening mode to the single awakening mode. In the single wake-up mode, the active wake-up information setting module continuously shortens the wake-up interval time and the wake-up duration time.
In this application technical scheme, effectively monitor the lithium cell through setting up reasonable monitoring mode, under the prerequisite of effectively monitoring the lithium cell, further prolonged BMS battery management system's life.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (8)
1. The utility model provides a BMS intelligence battery management control system suitable for new forms of energy car which characterized in that: comprises a controller, and
the first signal detection module is used for detecting a system power-on signal;
the second signal detection module is used for detecting the system power-on signal again according to the current fault level of the system;
the signal effectiveness judging module is used for judging whether the power-on signal of the system is effective or not according to the detection results of the first signal detection module and the second signal detection module and sending the power-on signal to the state initialization module or the high-voltage pre-charging module;
the state initialization module is used for initializing the state of the system according to the validity of the power-on signal of the system;
the fault information acquisition module is used for acquiring fault information according to the current state of the system and sending the fault information to the fault grade judgment module;
the fault grade judging module is used for judging the current fault grade of the system according to the fault information and sending the current fault grade to the second signal detecting module;
the high-voltage pre-charging module is used for performing high-voltage pre-charging according to the effectiveness of the power-on signal of the system;
the state validity judging module is used for judging whether the system enters an initialization state and a high-voltage pre-charging state or not and sending the current state of the system to the fault information acquisition module or the high-voltage power-on module;
the high-voltage electrifying module is used for carrying out high-voltage electrifying according to the current state of the system;
the state continuity detection module is used for judging whether the current working state of the power supply is safe or not according to the working state parameters of the power supply;
and the direct current voltage reduction module is used for entering an awakening state according to the current working state of the power supply, synchronously awakening the system when the power supply is awakened by self, and simultaneously carrying out voltage reduction regulation when the power supply is in an abnormal working state.
2. The BMS intelligent battery management control system suitable for new energy vehicles according to claim 1, wherein: the signal validity judging module judges that the system power-on signal detected by the first signal detecting module is valid when the first signal detecting module detects that the system power-on signal exceeds a time threshold value, and sends the system power-on signal to the state initializing module;
when the signal effectiveness judging module judges that the second signal detecting module collects the system electrifying signal, the signal effectiveness judging module judges that the system electrifying signal detected by the second signal detecting module is effective and sends the system electrifying signal to the high-voltage pre-charging module.
3. The BMS intelligent battery management control system suitable for new energy vehicles according to claim 2, wherein: the state initialization module initializes the state of the system when receiving effective information of a power-on signal of the system, and the state validity judgment module judges whether the system enters an initialization state or not and sends the current state of the system to the fault information acquisition module;
the high-voltage pre-charging module carries out high-voltage pre-charging when receiving effective information of a system power-on signal, and the state effectiveness judging module judges whether the system enters a high-voltage pre-charging state or not and sends the current state of the system to the high-voltage upper-voltage pre-charging module.
4. The BMS intelligent battery management control system suitable for new energy vehicles according to claim 3, wherein: the fault information acquisition module acquires fault information when receiving that the system is currently in an initialization state, and the fault grade judgment module judges the current fault grade of the system according to the fault information;
and if the current fault level is smaller than the fault level threshold value, the second signal detection module detects the system power-on signal again, otherwise, the second signal detection module stops detecting the system power-on signal, and the controller sends out fault alarm information.
5. The BMS intelligent battery management control system suitable for new energy vehicles according to claim 1, wherein: further comprising:
the active awakening information setting module is used for setting awakening interval time, awakening duration time and awakening mode according to the current working state of the power supply and forming active awakening information;
the active wake-up information sending module is used for sending active wake-up information to the direct current voltage reduction module;
and the passive wake-up information sending module is used for sending passive wake-up information to the controller when the direct current voltage reduction module wakes up.
6. The BMS intelligent battery management control system suitable for new energy vehicles according to claim 5, wherein: the state continuity detection module detects the current voltage, load and temperature of the power supply and judges whether the current working state of the power supply is safe or not;
if the current voltage, the load and the temperature of the power supply are all smaller than the corresponding threshold values, the state continuity detection module judges that the power supply is in a safe working state at present, the system carries out a dormant state after sending active awakening information to the direct current voltage reduction module, otherwise, the state continuity detection module judges that the power supply is in an abnormal working state at present, and the controller sends abnormal alarm information.
7. The BMS intelligent battery management control system suitable for new energy vehicles of claim 6, wherein: when the state continuity detection module judges that the power supplies are in a safe working state within a period of time, the active awakening information setting module synchronously prolongs the awakening interval time and the awakening duration time; otherwise, the active awakening information setting module synchronously shortens the awakening interval time and the awakening duration time.
8. The BMS intelligent battery management control system suitable for new energy vehicles according to claim 7, wherein: when the state continuity detection module judges that the power supply is in a safe working state within a period of time, the active awakening information setting module switches the awakening mode into a long-period awakening mode which is fixedly awakened according to the prolonged awakening interval time and the awakening duration time; otherwise, the active awakening information setting module switches the awakening mode into a single awakening mode which is according to the shortened awakening interval time and the awakening duration time and continues to shorten the time when awakening next time.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113928179A (en) * | 2021-11-30 | 2022-01-14 | 重庆长安新能源汽车科技有限公司 | Power battery monitoring method in whole vehicle standing state |
| CN116916374A (en) * | 2023-09-13 | 2023-10-20 | 羿动新能源科技有限公司 | Wireless BMS channel quality evaluation method and system for power battery |
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