CN112406541A - Vehicle and battery management system and method thereof - Google Patents
Vehicle and battery management system and method thereof Download PDFInfo
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- CN112406541A CN112406541A CN201910783083.9A CN201910783083A CN112406541A CN 112406541 A CN112406541 A CN 112406541A CN 201910783083 A CN201910783083 A CN 201910783083A CN 112406541 A CN112406541 A CN 112406541A
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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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- 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
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
- B60R16/0232—Circuits relating to the driving or the functioning of the vehicle for measuring vehicle parameters and indicating critical, abnormal or dangerous conditions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Transportation (AREA)
- Automation & Control Theory (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Secondary Cells (AREA)
Abstract
The invention provides a vehicle and a battery management system and a method thereof, wherein the battery management system of the vehicle comprises: a battery module including a plurality of battery cells; the acquisition units respectively correspond to the battery monomers, and each acquisition unit is used for acquiring the state information of the corresponding battery monomer; the battery management module is communicated with the plurality of acquisition units and is also communicated with the vehicle-mounted terminal through a gateway; and the normal power supply is used for supplying power to the battery management module, the gateway and the vehicle-mounted terminal. Therefore, the battery management system is powered on normally, the state of the battery module can be monitored all the day, the vehicle can detect the fault of the battery module in time and give an alarm in a non-use state, and the safety of the vehicle is improved.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to a vehicle and a battery management system and method thereof.
Background
In the related art, a centralized battery management system is usually adopted, that is, when a vehicle is in a use state, the battery management system supplies power through a vehicle-mounted power supply, monitors the state of a battery module, and sends alarm information when the battery module fails. However, the related art has a problem that when the vehicle is in a non-use state, for example, when the entire vehicle is in an OFF gear or the negative switch is turned OFF, the battery management system is in a non-operational state and cannot monitor the state of the battery module, so that if a fault such as serious leakage occurs in the battery, the battery cannot be detected in time, and an alarm cannot be given in time, thereby causing a potential safety hazard. Moreover, if the vehicle is parked for a long time, when the battery module is discharged to a low electric quantity or other faults occur in the parking process, related personnel cannot be informed in time, and effective processing cannot be performed.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, a first object of the present invention is to provide a battery management system for a vehicle, which is capable of monitoring the state of a battery module all the time by powering on the battery management system, so as to detect a failure of the battery module and give an alarm even in a non-use state of the vehicle, thereby improving the safety of the vehicle.
A second object of the invention is to propose a vehicle.
A third object of the present invention is to provide a battery management method for a vehicle.
A fourth object of the invention is to propose a readable storage medium.
In order to achieve the above object, a first aspect of the present invention provides a battery management system for a vehicle, the system including a battery module, the battery module including a plurality of battery cells; the acquisition units respectively correspond to the battery monomers, and each acquisition unit is used for acquiring the state information of the corresponding battery monomer; the battery management module is communicated with the plurality of acquisition units and is also communicated with the vehicle-mounted terminal through a gateway; and the normal power supply is used for supplying power to the battery management module, the gateway and the vehicle-mounted terminal.
According to the vehicle battery management system provided by the invention, a normal power supply supplies power to the battery management module, the gateway and the vehicle-mounted terminal, the acquisition unit acquires the state information of the battery module, and the battery management module is respectively communicated with the acquisition unit and the vehicle-mounted terminal through the gateway so as to monitor the state of the battery module all day long. Therefore, the battery management system is powered on normally, the state of the battery module can be monitored all the day, the vehicle can detect the fault of the battery module in time and give an alarm in a non-use state, and the safety of the vehicle is improved.
In addition, according to the battery management system of the vehicle provided by the invention, the following additional technical characteristics can be provided:
according to an embodiment of the present invention, the communication conversion module is disposed between the plurality of acquisition units and the battery management module, the communication conversion module communicates with the plurality of acquisition units in a differential transmission manner, the communication conversion module communicates with the battery management module in a CAN communication manner, and the communication conversion module is configured to convert the received differential signal into a CAN communication packet.
According to an embodiment of the present invention, the battery management module is configured to obtain state information of the plurality of battery cells after the vehicle is powered off, determine whether each of the plurality of battery cells has a fault according to the state information of the plurality of battery cells, and send battery fault information to the vehicle-mounted terminal through the gateway when at least one of the plurality of battery cells has a fault, where the vehicle-mounted terminal wakes up and forwards the battery fault information to an information receiving device after receiving the battery fault information.
According to one embodiment of the invention, the vehicle-mounted terminal keeps sleeping when none of the plurality of battery cells fails.
According to one embodiment of the invention, the battery management module is continuously in the wake-up state after the vehicle is powered off, or the battery management module wakes up every first preset time for a second preset time after the vehicle is powered off.
In order to achieve the above object, a second aspect of the present invention provides a vehicle including the battery management system of the vehicle.
According to the vehicle provided by the invention, the battery management system is powered on and monitors the state of the battery module all the time, so that the vehicle can give an alarm in time when a fault occurs in a non-use state, and the safety of the vehicle is improved.
To achieve the above object, a third aspect of the present invention provides a battery management method for a vehicle, including: after the vehicle is powered off, a constant power supply supplies power to a battery management module, a gateway and a vehicle-mounted terminal, wherein the battery management module acquires state information of a plurality of single batteries in a battery module; the battery management module judges whether each battery monomer has a fault according to the state information of the plurality of battery monomers; if at least one battery monomer has a fault, the battery management module sends battery fault information to the vehicle-mounted terminal through the gateway, wherein the vehicle-mounted terminal wakes up and forwards the battery fault information to the information receiving equipment after receiving the battery fault information.
According to the battery management method of the vehicle, the constant-power supply supplies power to the battery management module, the gateway and the vehicle-mounted terminal, the acquisition unit acquires the state information of the battery module, and the battery management module is respectively communicated with the acquisition unit and the vehicle-mounted terminal through the gateway to monitor the state of the battery module all day long. Therefore, the battery management system is powered on normally, the state of the battery module can be monitored all the day, the vehicle can detect the fault of the battery module in time and give an alarm in a non-use state, and the safety of the vehicle is improved. In addition, according to the battery management system of the vehicle provided by the invention, the following additional technical characteristics can be provided:
according to one embodiment of the invention, the vehicle-mounted terminal keeps sleeping when none of the plurality of battery cells fails.
According to one embodiment of the invention, the battery management module is continuously in the wake-up state after the vehicle is powered off, or the battery management module wakes up every first preset time for a second preset time after the vehicle is powered off.
To achieve the above object, a fourth aspect of the present invention provides a readable storage medium having stored thereon a battery management program for a vehicle, which when executed by a processor, implements a battery management method for a vehicle according to the third aspect of the present invention.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a block schematic diagram of a battery management system of a vehicle according to an embodiment of the present invention;
FIG. 2 is a block schematic diagram of a battery management system of a vehicle according to one embodiment of the present invention;
FIG. 3 is a block schematic diagram of a vehicle according to an embodiment of the invention;
FIG. 4 is a flow chart of a battery management method of a vehicle according to an embodiment of the invention;
FIG. 5 is a flow chart of a method of battery management for a vehicle according to one embodiment of the present invention;
FIG. 6 is a flow chart of a battery management method of a vehicle according to another embodiment of the present invention; and
fig. 7 is a block diagram schematically illustrating a battery management system of a vehicle in the related art.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
Before describing the battery management system of a vehicle according to an embodiment of the present invention, the operation principle of the battery management system of a vehicle according to the related art will be briefly described.
As shown in fig. 7, a centralized battery management system in the related art includes a plurality of battery packs, a plurality of sampling modules corresponding to the plurality of battery packs, a GPRS communication module, a main controller, and a power management module. The sampling module is used for sampling voltage, current and temperature information of the battery pack and transmitting the acquired information to the main controller through the GPRS communication module (such as a photoelectric isolator); the main controller processes the information collected by the sampling module, sends commands to other modules (such as vehicle-mounted equipment) of the system, and communicates with the upper computer; the power management module carries out level conversion on the vehicle-mounted very-electric power supply and provides power for the main controller and the sampling module, wherein the main controller comprises a memory and a processor, the memory stores computer programs, and the programs can be sequentially realized when being executed by the processor: selecting a sampling module for information acquisition; calculating the residual electric quantity and the internal resistance of the battery; judging whether a fault exists, if so, giving a fault alarm, and if not, displaying battery information; the system is shut down. Thereby realizing the centralized management of the vehicle battery. The sampling module is communicated by CAN signals, the collected battery information is sent to the main controller through a CAN network, and the sampling module CAN normally work only by being powered by an external power supply.
However, the inventor of the present application finds and recognizes that, because the vehicle-mounted power supply cannot supply power when the entire vehicle is in an OFF gear or the negative switch is turned OFF, the centralized battery management system cannot monitor information of the vehicle battery in all weather, when the entire vehicle is not in use, the main controller cannot obtain power supply, and cannot continue to monitor information of the vehicle battery and the like when the entire vehicle stops working, if the battery has a fault such as serious leakage and the like, the battery cannot be detected by the main controller in time, and further cannot perform safety processing such as fault alarm and the like, if the vehicle is parked for a long time, other faults occur when the battery is discharged to a low electric quantity, and the system cannot notify related personnel by sending alarm information and the like, and cannot perform effective processing, so that the safety of the vehicle is.
Based on this, the embodiment of the invention provides a battery management system of a vehicle, which can monitor the state of a battery module all weather by receiving normal electricity, can enable the vehicle to detect the fault of the battery module and give an alarm in time under the non-use state, and improves the safety of the vehicle.
A vehicle and a battery management system and method thereof according to an embodiment of the present invention are described below with reference to the accompanying drawings.
Fig. 1 is a block schematic diagram of a battery management system of a vehicle according to an embodiment of the present invention. As shown in fig. 1, a battery management system 101 of a vehicle according to an embodiment of the present invention includes a battery module 102, a plurality of acquisition units 103, a battery management module 104, a gateway 105, an on-vehicle terminal 106, and a normal power supply 107.
Wherein the battery module 102 includes a plurality of battery cells 108; the plurality of battery cells 108 respectively correspond to the plurality of acquisition units 103, each acquisition unit 103 is configured to acquire state information of a corresponding battery cell 108, specifically, the state information of the battery cell 108 may include voltage, current, temperature information, and the like, it can be understood that before acquiring the state information of the battery cell 108, a normal range of the state information of the battery cell 108 may be preset in the battery management system 101, and when the acquired state information of the battery cell 108 is outside the preset normal range, it may be determined that the battery cell 108 has a fault.
It should be noted that the acquisition unit 103 may be powered by the battery cell 108; the plurality of collecting units 103 may be located inside the battery module 102 or outside the battery module 102, and the plurality of collecting units 103 located inside the battery module 102 in fig. 1 is only an example for explaining the present invention and should not be construed as limiting the present invention.
Specifically, the acquisition unit 103 may be a cascade collector, and outputs information by using differential signals, and compared with the CAN communication, the communication mode of the collector reduces a power supply module, a CAN transceiver module and an MCU system module which are necessary for the CAN communication, thereby saving the hardware cost of the product.
It can be understood that the battery management module 104 communicates with the plurality of acquisition units 103, the battery management module 104 determines whether each battery cell 108 has a fault according to the state information of the battery cells 108 acquired by the plurality of acquisition units 103, the battery management module 104 can also receive information sent by other modules (such as an electronic control unit) of the system, can also send commands to other modules of the system, and can also communicate with an upper computer, the battery management unit can analyze the battery state information acquired by the acquisition units 103, the information sent by other modules of the system, and the information sent by the upper computer, and perform related processing after the analysis, and the related processing includes sending commands to other modules of the system, sending information to the upper computer, and the like.
In addition, the state information of the plurality of battery cells 108 may be acquired by the plurality of acquisition units 103, respectively, or may be acquired by one acquisition unit 103, for example: under the permission of the communication load of the acquisition unit 103, namely the battery management module 104, the state information of the plurality of battery cells 108 in one battery module 102 can be acquired by only one acquisition unit 103, so that the hardware cost of the product is saved.
Further, the battery management module 104 also communicates with the in-vehicle terminal 106 through the gateway 105, and the in-vehicle terminal 106 performs related processing according to information sent by the battery management module 104 through the gateway 105, such as: when the battery management module 104 determines that the battery module 102 has a fault, the battery management module 104 sends fault alarm information and fault battery state information to the vehicle-mounted terminal 106 through the gateway 105, and the vehicle-mounted terminal 106 processes the fault alarm information and the fault battery state information and sends the information to an information receiving device, such as a mobile terminal or a server, so as to implement real-time background monitoring on the vehicle battery module 102. In addition, the battery management module 104 may also communicate with other vehicle-mounted devices (such as vehicle-mounted computers) through the gateway 105.
Further, a constant power supply 107 is used to supply power to the battery management module 104, the gateway 105, and the in-vehicle terminal 106. It can be understood that the normal power supply 107 can continuously supply power, that is, power can still be supplied when the entire vehicle is in the OFF gear or the negative switch is turned OFF, and thus as long as the normal power supply is powered, the battery management module 104, the gateway 105 and the vehicle-mounted terminal 106 powered by the normal power supply are not powered OFF, so that it can be ensured that the battery management system 101 of the vehicle can still be powered on to work when the vehicle is in the non-use state.
Therefore, the battery management system of the embodiment of the invention has the advantages that the normal power supply supplies power to the battery management module, the gateway and the vehicle-mounted terminal, the acquisition unit acquires the state information of the battery module, and the battery management module is respectively communicated with the acquisition unit and the vehicle-mounted terminal through the gateway so as to monitor the state of the battery module all day long. Therefore, the battery management system is powered on normally, the state of the battery module can be monitored all the day, the vehicle can detect the fault of the battery module in time and give an alarm in a non-use state, and the safety of the vehicle is improved.
According to an embodiment of the present invention, the collecting unit 103 may be a cascade collector, and the cascade collector outputs the state information collected from the battery cells 108 in a manner of differential signals, but a signal receiving port of the battery management module 104 still adopts a CAN communication interface, so that the cascade collector and the battery management module 104 implement forwarding of information through a communication conversion module, and thus as shown in fig. 2, the battery management system 101 of the vehicle further includes a communication conversion module 201.
Specifically, the communication conversion module 201 may be disposed between the plurality of acquisition units 103 and the battery management module 104, the communication conversion module 201 communicates with the plurality of acquisition units 103 in a differential transmission manner, the communication conversion module 201 communicates with the battery management module 104 in a CAN communication manner, and the communication conversion module is configured to convert differential signals received from the plurality of acquisition units 103 into CAN communication messages and send the CAN communication messages to the battery management module 104.
It should be noted that the power supply of the communication conversion module 201 can be provided by the battery management module 104, and therefore, the communication conversion module 201 can still be powered on to operate when the entire vehicle is in the OFF gear or the negative switch is turned OFF, like the battery management module 104, the gateway 105 and the vehicle-mounted terminal 106.
According to an embodiment of the present invention, the battery management module 104 is configured to obtain state information of the plurality of battery cells 102 after the vehicle is powered off, determine whether each battery cell 102 has a fault according to the state information of the plurality of battery cells 102, and send the battery fault information to the vehicle-mounted terminal 106 through the gateway 105 when at least one battery cell 102 has a fault, where after receiving the battery fault information, the vehicle-mounted terminal 106 wakes up and forwards the battery fault information to the information receiving device. In which, in-vehicle terminal 106 remains dormant when none of the plurality of battery cells 108 has failed.
However, when the vehicle is powered OFF, that is, the vehicle is not in use, including when the vehicle is in an OFF gear or the negative switch is turned OFF, since the battery management module 104, the gateway 105, and the vehicle-mounted terminal 106 are connected to the normal power supply 107, the battery management module 104, the gateway 105, and the vehicle-mounted terminal 106 can be kept in the powered state for 24 hours all the day.
According to an embodiment of the present invention, the battery management module 104 is continuously in the wake-up state after the vehicle is powered off, or the battery management module 104 wakes up every first preset time for a second preset time after the vehicle is powered off.
It is appreciated that the battery management module 104 may remain intermittently dormant after the vehicle is powered down, thereby reducing power consumption. For example, the battery management module 104 may automatically wake up after sleeping for 30 minutes, continuously receive the state information of the plurality of battery cells 108 transmitted by the acquisition unit 103 through the communication conversion module 201, and process the state information, where the continuous receiving time may be 1 minute, the battery management module 104 enters the sleeping state again after continuously receiving for 1 minute, and continuously receives for 1 minute after sleeping for 30 minutes, and the cycle is repeated.
In addition, the battery management module 104 wakes up every first preset time for a second preset time after the vehicle is powered off, and the sleep and continuous receiving time of the following cycle may be different from the previous sleep and continuous receiving time, for example: and awakening a fourth preset time every third preset time in the second cycle period, wherein the third preset time can be different from the first preset time, and the fourth preset time can be different from the second preset time, so that the randomness of receiving the sampling information is ensured.
As described above, the battery management module 104 continuously receives the sampling state information of the plurality of battery cells 108 transmitted by the acquisition unit 103 through the communication conversion module 201 in all weather under the power supply of the constant power supply 107, and determines which battery cells 108 are in failure through comparison with the preset state information, if none of the battery cells 108 are in failure, the battery management module 104 does not send any information to the gateway 105, and continuously receives the sampling state information of the plurality of battery cells 108, and the vehicle-mounted terminal 106 maintains the sleep state to reduce power consumption; if one or more battery cells 108 have a fault, the battery management module 104 sends related information to the vehicle-mounted terminal 106 through the gateway 105, where the related information includes fault alarm information and fault battery status information, the vehicle-mounted terminal 106 wakes up after receiving the related information, and sends the received related information to an information receiving device, for example, sends the fault alarm information to alarm, and sends the fault battery status information to display, where the information receiving device may be a background monitoring platform (such as a server) or other client (such as a mobile terminal), and the vehicle-mounted terminal 106 may communicate with the information receiving device through a wireless communication network, such as a 2G network, a 3G network, a 4G network, or a 5G network.
In summary, according to the battery management system of the vehicle provided by the embodiment of the invention, the normal power supply supplies power to the battery management module, the gateway and the vehicle-mounted terminal, the acquisition unit acquires the state information of the battery module, and the battery management module is respectively communicated with the acquisition unit and the vehicle-mounted terminal through the gateway to monitor the state of the battery module all day long. Therefore, the battery management system is powered on normally, the state of the battery module can be monitored all the day, the vehicle can detect the fault of the battery module in time and give an alarm in a non-use state, and the safety of the vehicle is improved.
Based on the battery management system of the vehicle in the embodiment, the invention further provides the vehicle.
FIG. 3 is a block schematic diagram of a vehicle according to an embodiment of the present invention. As shown in fig. 3, a vehicle 301 of the embodiment of the present invention includes a battery management system 101.
According to the vehicle provided by the invention, the battery management system is powered on normally, so that the state of the battery module can be monitored all weather, the fault of the battery module can be detected and alarmed in time when the vehicle is not in use, and the safety of the vehicle is improved.
Corresponding to the battery management system of the vehicle in the embodiment, the invention also provides a battery management method of the vehicle.
Fig. 4 is a flowchart of a battery management method of a vehicle according to an embodiment of the present invention. As shown in fig. 4, a battery management method of a vehicle of an embodiment of the present invention includes the steps of:
s401: after the vehicle is powered off, the battery management module, the gateway and the vehicle-mounted terminal are powered by a normal power supply, and the battery management module acquires the state information of a plurality of single batteries in the battery module;
s402: the battery management module judges whether each battery monomer has a fault according to the state information of the plurality of battery monomers;
s403: if at least one battery monomer has a fault, the battery management module sends battery fault information to the vehicle-mounted terminal through the gateway, wherein the vehicle-mounted terminal wakes up and forwards the battery fault information to the information receiving equipment after receiving the battery fault information.
According to one embodiment of the invention, the vehicle-mounted terminal keeps sleeping when none of the plurality of battery cells fails.
According to one embodiment of the invention, the battery management module is continuously in the awakening state after the vehicle is powered off, or the battery management module is awakened for a second preset time every first preset time after the vehicle is powered off.
As described above, with reference to the embodiment of fig. 5, taking the example that the battery management module is continuously in the wake-up state after the vehicle is powered off, the battery management method of the vehicle according to the embodiment of the present invention includes the following steps:
s501: and powering off the whole vehicle.
S502: the battery management module continuously receives the sampling information and processes but does not send out messages.
S503: and judging whether a battery fault occurs.
If yes, go to step S504; if not, the process returns to step S502.
S504: the battery management module begins sending messages.
S505: and the gateway receives the message and forwards the message to the vehicle-mounted terminal.
S506: and judging whether the vehicle-mounted terminal receives the message or not.
If yes, go to step S507; if not, step S509 is executed.
S507: and the vehicle-mounted terminal is awakened from the dormant state.
S508: the vehicle-mounted terminal sends the battery failure information to the information receiving equipment.
S509: the vehicle-mounted terminal keeps dormant.
As described above, with reference to the embodiment of fig. 6, taking the example that the battery management module wakes up every first preset time when powering down for a second preset time, the battery management method of the vehicle according to the embodiment of the present invention includes the following steps:
s601: and powering off the whole vehicle.
S602: and the battery management module receives the sampling information at intervals of a first preset time and a second preset time and processes the sampling information but does not send a message.
S603: and judging whether a battery fault occurs.
If yes, go to step S604; if not, the process returns to step S602.
S604: the battery management module begins sending messages.
S605: and the gateway receives the message and forwards the message to the vehicle-mounted terminal.
S606: and judging whether the vehicle-mounted terminal receives the message or not.
If yes, go to step S607; if not, go to step S609.
S607: and the vehicle-mounted terminal is awakened from the dormant state.
S608: the vehicle-mounted terminal sends battery fault information to the alarm system and the information receiving equipment.
S609: the vehicle-mounted terminal keeps dormant.
It should be noted that the foregoing explanations of the system embodiments also apply to the method embodiments, and are not repeated herein.
According to the battery management method of the vehicle, the constant-power supply supplies power to the battery management module, the gateway and the vehicle-mounted terminal, the acquisition unit acquires the state information of the battery module, and the battery management module is respectively communicated with the acquisition unit and the vehicle-mounted terminal through the gateway to monitor the state of the battery module all day long. Therefore, the battery management system is powered on normally, the state of the battery module can be monitored all the day, the vehicle can detect the fault of the battery module in time and give an alarm in a non-use state, and the safety of the vehicle is improved.
To achieve the above embodiments, the present invention also proposes a readable storage medium on which a battery management program of a vehicle is stored, which when executed by a processor implements the battery management method of the vehicle as in the foregoing embodiments.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing steps of a custom logic function or process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. If implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A battery management system for a vehicle, comprising:
a battery module including a plurality of battery cells;
the acquisition units respectively correspond to the battery monomers, and each acquisition unit is used for acquiring the state information of the corresponding battery monomer;
the battery management module is communicated with the plurality of acquisition units and is also communicated with the vehicle-mounted terminal through a gateway;
and the normal power supply is used for supplying power to the battery management module, the gateway and the vehicle-mounted terminal.
2. The battery management system of a vehicle according to claim 1, characterized by further comprising:
the communication conversion module is arranged between the plurality of acquisition units and the battery management module, the communication conversion module is communicated with the plurality of acquisition units in a differential transmission mode, the communication conversion module is communicated with the battery management module in a CAN communication mode, and the communication conversion module is used for converting received differential signals into CAN communication messages.
3. The battery management system of the vehicle according to claim 1 or 2, wherein the battery management module is configured to obtain state information of the plurality of battery cells after the vehicle is powered off, determine whether each of the battery cells has a fault according to the state information of the plurality of battery cells, and send battery fault information to the vehicle-mounted terminal through the gateway when at least one of the battery cells has a fault, wherein the vehicle-mounted terminal wakes up and forwards the battery fault information to an information receiving device after receiving the battery fault information.
4. The battery management system of a vehicle according to claim 3, wherein the in-vehicle terminal remains dormant when none of the plurality of battery cells has failed.
5. The battery management system of claim 1, wherein the battery management module is continuously awake after the vehicle is powered down, or wherein the battery management module wakes up every first preset time for a second preset time after the vehicle is powered down.
6. A vehicle characterized by comprising a battery management system of the vehicle according to any one of claims 1-5.
7. A battery management method for a vehicle, characterized by comprising the steps of:
after the vehicle is powered off, a constant power supply supplies power to a battery management module, a gateway and a vehicle-mounted terminal, wherein the battery management module acquires state information of a plurality of single batteries in a battery module;
the battery management module judges whether each battery monomer has a fault according to the state information of the plurality of battery monomers;
if at least one battery monomer has a fault, the battery management module sends battery fault information to the vehicle-mounted terminal through the gateway, wherein the vehicle-mounted terminal wakes up and forwards the battery fault information to the information receiving equipment after receiving the battery fault information.
8. The battery management method of a vehicle according to claim 7, wherein the in-vehicle terminal remains in sleep when none of the plurality of battery cells has failed.
9. The battery management method of claim 7, wherein the battery management module is continuously in the wake-up state after the vehicle is powered off, or the battery management module wakes up every first preset time after the vehicle is powered off for a second preset time.
10. A readable storage medium, characterized in that a battery management program of a vehicle is stored thereon, which when executed by a processor implements the battery management method of the vehicle according to any one of claims 7 to 9.
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| CN201910783083.9A CN112406541A (en) | 2019-08-23 | 2019-08-23 | Vehicle and battery management system and method thereof |
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| CN201910783083.9A CN112406541A (en) | 2019-08-23 | 2019-08-23 | Vehicle and battery management system and method thereof |
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