CN106515489B - Method and device for charging battery - Google Patents
Method and device for charging battery Download PDFInfo
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- CN106515489B CN106515489B CN201611063013.9A CN201611063013A CN106515489B CN 106515489 B CN106515489 B CN 106515489B CN 201611063013 A CN201611063013 A CN 201611063013A CN 106515489 B CN106515489 B CN 106515489B
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- power supply
- battery
- range extender
- power
- supply battery
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/61—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
-
- 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
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
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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
- Y02T10/62—Hybrid vehicles
-
- 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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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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
- Y02T90/14—Plug-in electric vehicles
Abstract
The embodiment of the invention discloses a method and a device for charging a battery. The method comprises the following steps: collecting discharge current of the battery and voltage signals of at least two power supply batteries; judging the working condition states of the automobile according to the discharging current and the at least two voltage signals, and controlling the power supply of the at least two power supply batteries and the opening/closing of the range extender according to different working condition states, wherein the working condition states comprise an acceleration working condition, an acceleration completion working condition and a non-acceleration working condition; checking whether the range extender is correctly started according to a starting instruction and charging a power supply battery; and when an out-of-control fault or a charging alarm signal of the range extender is received, a fault alarm lamp is timely lightened to inform a driver. Therefore, the problem of driving mileage caused by the battery technology is solved, the range-extended electric automobile can charge the battery on the premise of not stopping, the driving mileage of the electric automobile is greatly expanded, the cost is low, and the range-extended electric automobile gradually becomes a pursuit hot spot of various automobile manufacturers and research institutions.
Description
Technical Field
The embodiment of the invention relates to the technical field of pure electric vehicles, in particular to a method and a device for flushing a battery.
Background
With the increasing exhaustion of petroleum resources and the increasing environmental requirements of people, electric automobiles are gradually becoming the development direction of the world automobile market. However, the problem that the pure electric automobile cannot run due to lack of electricity and is troublesome to charge is limited, so that the driving range is limited, and the development of the electric automobile is limited to a great extent.
Disclosure of Invention
The embodiment of the invention aims to provide a method and a device for charging a battery, which aim to solve the problem of how to timely charge an electric automobile.
To achieve the purpose, the embodiment of the invention adopts the following technical scheme:
in a first aspect, a method of charging a battery, the method comprising:
collecting discharge current of the battery and voltage signals of at least two power supply batteries;
judging the working condition states of the automobile according to the discharging current and the at least two voltage signals, and controlling the power supply of the at least two power supply batteries and the opening/closing of the range extender according to different working condition states, wherein the working condition states comprise an acceleration working condition, an acceleration completion working condition and a non-acceleration working condition;
checking whether the range extender is correctly started according to a starting instruction and charging a power supply battery;
And when an out-of-control fault or a charging alarm signal of the range extender is received, a fault alarm lamp is timely lightened to inform a driver.
Preferably, the acceleration condition is: the discharge current is increased sharply, and the at least two power supply batteries need to be supplied with power at the same time to ensure enough acceleration power;
the acceleration completion conditions are as follows: the battery discharging current is sharply reduced, and the state of being simultaneously supplied by the at least two power supply batteries is restored to the state of being supplied by one battery before acceleration;
the non-acceleration conditions are: and determining a power supply battery according to the at least two power supply batteries.
Preferably, the controlling the at least two power supply batteries to supply power according to different working conditions includes:
if the range extender is in an open state and the working condition state is the non-acceleration working condition, judging whether U1 is larger than a first threshold value and U2 is larger than the first threshold value;
if the U1 is larger than the first threshold and the U2 is larger than the first threshold, judging whether the range extender is charging a first power supply battery or not;
if the range extender is charging the first power supply battery, judging whether the first power supply battery is supplying power to the automobile;
If the first power supply battery is judged to supply power to the automobile, switching to a second power supply battery to supply power to the automobile;
wherein, U1 is used for collecting the voltage signal of the first power supply battery; the U2 is used for collecting a voltage signal of the second power supply battery; the first threshold is used to indicate that one of the batteries needs to be charged if the voltage of the battery is lower than the first threshold.
Preferably, the controlling the at least two power supply batteries to supply power according to different working conditions includes:
if the range extender is in an on state, judging whether U1 is larger than a first threshold value and U2 is larger than the first threshold value;
if not, judging whether the U1 is smaller than the first threshold value and whether the U2 is larger than the first threshold value;
if yes, judging whether the range extender charges the first power supply battery or not; if the range extender is not used for charging the first power supply battery, a charging alarm is sent out;
if the range extender charges the first power supply battery, judging whether the first power supply battery charges the automobile or not; if the first power supply battery is not charging the automobile, the charging process is exited;
if the first power supply battery charges the automobile, switching to the second power supply battery to charge the automobile;
Wherein, U1 is used for collecting the voltage signal of the first power supply battery; the U2 is used for collecting a voltage signal of the second power supply battery; the first threshold is used to indicate that one of the batteries needs to be charged if the voltage of the battery is lower than the first threshold.
Preferably, the controlling the at least two power supply batteries to supply power according to different working conditions includes:
if the range extender is in an on state, judging whether the U1 is larger than a first threshold value and whether the U2 is larger than the first threshold value;
if not, judging whether the U1 is smaller than the first threshold value and whether the U2 is larger than the first threshold value;
if not, judging whether the U1 is larger than the first threshold value and whether the U2 is smaller than the first threshold value; if not, sending out a charging alarm;
if the U1 is larger than the first threshold and the U2 is smaller than the first threshold, judging whether the range extender is charging the second power supply battery or not; if not, sending out a charging alarm;
if the range extender is used for charging the second power supply battery, judging whether the second power supply battery is used for charging the automobile, and if not, exiting the charging process; if the second power supply battery is charging the automobile, switching to the first power supply battery to supply power to the automobile;
Wherein, U1 is used for collecting the voltage signal of the first power supply battery; the U2 is used for collecting a voltage signal of the second power supply battery; the first threshold is used to indicate that one of the batteries needs to be charged if the voltage of the battery is lower than the first threshold.
Preferably, the controlling the at least two power supply batteries to supply power according to different working conditions includes:
if the range extender is in an on state, judging whether U1 is larger than a first threshold value and U2 is larger than the first threshold value;
if yes, judging whether the range extender is used for charging a first power supply battery;
if the range extender is not used for charging the first power supply battery, judging whether a second power supply battery is used for supplying power to the automobile; if the second power supply battery is charging the automobile, switching to the first power supply battery to supply power to the automobile; if the second power supply battery is not used for charging the automobile, judging whether the U2 is larger than a second threshold value, if so, closing the range extender;
if the range extender is used for charging the first power supply battery, judging whether the first power supply battery is used for supplying power to the automobile, if the first power supply battery is not used for supplying power to the automobile, judging whether U1 is larger than the second threshold value, and if U1 is larger than the second threshold value, closing the range extender; if the U1 is smaller than or equal to the second threshold value, exiting the power supply program;
Wherein, U1 is used for collecting the voltage signal of the first power supply battery; the U2 is used for collecting a voltage signal of the second power supply battery; the first threshold is used for indicating that one of the battery voltages is lower than the first threshold and indicates that charging is needed; the second threshold value indicates that one of the batteries is being charged and that the rechargeable battery has completed charging when the voltage of the rechargeable battery is above the second threshold value.
Preferably, the controlling the at least two power supply batteries to supply power according to different working conditions includes:
if the range extender is in a closed state and the working condition state is the non-acceleration working condition, judging whether U1 is larger than the first threshold value and U2 is larger than the first threshold value;
if the U1 is greater than the threshold and the U2 is greater than the first threshold, exiting the charging process;
if not, judging whether the U1 is smaller than the first threshold value and whether the U2 is larger than the first threshold value, and if so, judging whether the first power supply battery is supplying power to the automobile; if the first power supply battery is supplying power to the automobile, switching the second power supply battery to supply power to the automobile, and starting the range extender to supply power to the first power supply battery; if the first power supply battery is not supplying power to the automobile, starting the range extender to supply power to the first power supply battery;
If not, judging whether the U1 is larger than the first threshold value and whether the U2 is smaller than the first threshold value, and if so, judging whether the second power supply battery is supplying power to the automobile; if the second power supply battery is supplying power to the automobile, switching to the first power supply battery to supply power to the automobile, and starting the range extender to supply power to the second power supply battery; if the second power supply battery is not supplying power to the automobile, starting the range extender to supply power to the second power supply battery;
if not, judging that the first power supply battery supplies power to the automobile; if the first power supply battery supplies power to the automobile, the range extender is started to supply power to the second power supply battery, and a charging alarm signal is sent out; if the first power supply battery does not supply power to the automobile, the range extender is started to supply power to the first power supply battery, and a charging alarm signal is sent out;
wherein, U1 is used for collecting the voltage signal of the first power supply battery; the U2 is used for collecting a voltage signal of the second power supply battery; the first threshold is used to indicate that one of the batteries needs to be charged if the voltage of the battery is lower than the first threshold.
Preferably, when receiving the out-of-control fault or the charging alarm signal of the range extender, the device timely lights a fault alarm lamp to inform a driver, and comprises:
if the range extender is correctly started according to the instruction for starting the range extender and charges the battery, checking is needed, and whether the range extender is in a starting state is judged according to the working current of the range extender;
and if the range extender does not start the range extender according to the instruction for starting the range extender, or the range extender receives the instruction for starting the range extender but does not start the range extender, performing fault alarm.
Preferably, when receiving the out-of-control fault or the charging alarm signal of the range extender, the device timely lights a fault alarm lamp to inform a driver, and comprises:
if the fault alarm module receives the out-of-control fault of the range extender, the fault alarm lamp is immediately lightened and the driver is informed to find out the out-of-control fault reason of the range extender in time;
and if the fault alarm module receives the charging alarm signal, the fault alarm lamp is immediately lightened, and the driver is informed of timely carrying out external charging on the battery or supplementing gasoline to the range extender.
In a second aspect, an apparatus for charging a battery, the apparatus comprising:
the information acquisition module is used for acquiring battery discharge current and at least two power supply battery voltage signals;
the range-extending control module is used for judging the working condition state of the automobile according to the battery discharging current and the at least two power supply battery voltage signals and controlling the at least two power supply batteries to supply power and the range extender to be turned on/off according to different working condition states, wherein the working condition states comprise an acceleration working condition, an acceleration completion working condition and a non-acceleration working condition;
the checking module is used for checking whether the range extender is correctly started according to the starting instruction and charging the battery;
and the fault alarm module is used for timely lighting a fault alarm lamp to inform a driver when receiving the out-of-control fault or the charging alarm signal of the range extender.
Preferably, the acceleration condition is: the discharge current is increased sharply, and the at least two power supply batteries need to be supplied with power at the same time to ensure enough acceleration power;
the acceleration completion conditions are as follows: the battery discharging current is sharply reduced, and the state of being simultaneously supplied by the at least two power supply batteries is restored to the state of being supplied by one battery before acceleration;
The non-acceleration conditions are: and determining a power supply battery according to the at least two power supply batteries.
Preferably, the range-extending control module is specifically configured to:
if the range extender is in an open state and the working condition state is the non-acceleration working condition, judging whether U1 is larger than a first threshold value and U2 is larger than the first threshold value;
if the U1 is larger than the first threshold and the U2 is larger than the first threshold, judging whether the range extender is charging a first power supply battery or not;
if the range extender is charging the first power supply battery, judging whether the first power supply battery is supplying power to the automobile;
if the first power supply battery is judged to supply power to the automobile, switching to a second power supply battery to supply power to the automobile;
wherein, U1 is used for collecting the voltage signal of the first power supply battery; the U2 is used for collecting a voltage signal of the second power supply battery; the first threshold is used to indicate that one of the batteries needs to be charged if the voltage of the battery is lower than the first threshold.
Preferably, the range-extending control module is further specifically configured to:
if the range extender is in an on state, judging whether U1 is larger than a first threshold value and U2 is larger than the first threshold value;
If not, judging whether the U1 is smaller than the first threshold value and whether the U2 is larger than the first threshold value;
if yes, judging whether the range extender charges the first power supply battery or not; if the range extender is not used for charging the first power supply battery, a charging alarm is sent out;
if the range extender charges the first power supply battery, judging whether the first power supply battery charges the automobile or not; if the first power supply battery is not charging the automobile, the charging process is exited;
if the first power supply battery charges the automobile, switching to the second power supply battery to charge the automobile;
wherein, U1 is used for collecting the voltage signal of the first power supply battery; the U2 is used for collecting a voltage signal of the second power supply battery; the first threshold is used to indicate that one of the batteries needs to be charged if the voltage of the battery is lower than the first threshold.
Preferably, the range-extending control module is further specifically configured to:
if the range extender is in an on state, judging whether the U1 is larger than a first threshold value and whether the U2 is larger than the first threshold value;
if not, judging whether the U1 is smaller than the first threshold value and whether the U2 is larger than the first threshold value;
If not, judging whether the U1 is larger than the first threshold value and whether the U2 is smaller than the first threshold value; if not, sending out a charging alarm;
if the U1 is larger than the first threshold and the U2 is smaller than the first threshold, judging whether the range extender is charging the second power supply battery or not; if not, sending out a charging alarm;
if the range extender is used for charging the second power supply battery, judging whether the second power supply battery is used for charging the automobile, and if not, exiting the charging process; if the second power supply battery is charging the automobile, switching to the first power supply battery to supply power to the automobile;
wherein, U1 is used for collecting the voltage signal of the first power supply battery; the U2 is used for collecting a voltage signal of the second power supply battery; the first threshold is used to indicate that one of the batteries needs to be charged if the voltage of the battery is lower than the first threshold.
Preferably, the range-extending control module is further specifically configured to:
if the range extender is in an on state, judging whether U1 is larger than a first threshold value and U2 is larger than the first threshold value;
if yes, judging whether the range extender is used for charging a first power supply battery;
If the range extender is not used for charging the first power supply battery, judging whether a second power supply battery is used for supplying power to the automobile; if the second power supply battery is charging the automobile, switching to the first power supply battery to supply power to the automobile; if the second power supply battery is not used for charging the automobile, judging whether the U2 is larger than a second threshold value, if so, closing the range extender;
if the range extender is used for charging the first power supply battery, judging whether the first power supply battery is used for supplying power to the automobile, if the first power supply battery is not used for supplying power to the automobile, judging whether U1 is larger than the second threshold value, and if U1 is larger than the second threshold value, closing the range extender; if the U1 is smaller than or equal to the second threshold value, exiting the power supply program;
wherein, U1 is used for collecting the voltage signal of the first power supply battery; the U2 is used for collecting a voltage signal of the second power supply battery; the first threshold is used for indicating that one of the battery voltages is lower than the first threshold and indicates that charging is needed; the second threshold value indicates that one of the batteries is being charged and that the rechargeable battery has completed charging when the voltage of the rechargeable battery is above the second threshold value.
Preferably, the range-extending control module is further specifically configured to:
if the range extender is in a closed state and the working condition state is the non-acceleration working condition, judging whether U1 is larger than the first threshold value and U2 is larger than the first threshold value;
if the U1 is greater than the threshold and the U2 is greater than the first threshold, exiting the charging process;
if not, judging whether the U1 is smaller than the first threshold value and whether the U2 is larger than the first threshold value, and if so, judging whether the first power supply battery is supplying power to the automobile; if the first power supply battery is supplying power to the automobile, switching the second power supply battery to supply power to the automobile, and starting the range extender to supply power to the first power supply battery; if the first power supply battery is not supplying power to the automobile, starting the range extender to supply power to the first power supply battery;
if not, judging whether the U1 is larger than the first threshold value and whether the U2 is smaller than the first threshold value, and if so, judging whether the second power supply battery is supplying power to the automobile; if the second power supply battery is supplying power to the automobile, switching to the first power supply battery to supply power to the automobile, and starting the range extender to supply power to the second power supply battery; if the second power supply battery is not supplying power to the automobile, starting the range extender to supply power to the second power supply battery;
If not, judging that the first power supply battery supplies power to the automobile; if the first power supply battery supplies power to the automobile, the range extender is started to supply power to the second power supply battery, and a charging alarm signal is sent out; if the first power supply battery does not supply power to the automobile, the range extender is started to supply power to the first power supply battery, and a charging alarm signal is sent out;
wherein, U1 is used for collecting the voltage signal of the first power supply battery; the U2 is used for collecting a voltage signal of the second power supply battery; the first threshold is used to indicate that one of the batteries needs to be charged if the voltage of the battery is lower than the first threshold.
Preferably, the fault alarm module is specifically configured to:
if the range extender is correctly started according to the instruction for starting the range extender and charges the battery, checking is needed, and whether the range extender is in a starting state is judged according to the working current of the range extender;
and if the range extender does not start the range extender according to the instruction for starting the range extender, or the range extender receives the instruction for starting the range extender but does not start the range extender, performing fault alarm.
Preferably, the fault alarm module is further specifically configured to:
If the fault alarm module receives the out-of-control fault of the range extender, the fault alarm lamp is immediately lightened and the driver is informed to find out the out-of-control fault reason of the range extender in time;
and if the fault alarm module receives the charging alarm signal, the fault alarm lamp is immediately lightened, and the driver is informed of timely carrying out external charging on the battery or supplementing gasoline to the range extender.
The embodiment of the invention provides a method and a device for charging a battery, which are used for collecting discharge current of the battery and voltage signals of at least two power supply batteries; judging the working condition states of the automobile according to the discharging current and the at least two voltage signals, and controlling the power supply of the at least two power supply batteries and the opening/closing of the range extender according to different working condition states, wherein the working condition states comprise an acceleration working condition, an acceleration completion working condition and a non-acceleration working condition; checking whether the range extender is correctly started according to a starting instruction and charging a power supply battery; and when an out-of-control fault or a charging alarm signal of the range extender is received, a fault alarm lamp is timely lightened to inform a driver. Therefore, the problem of driving mileage caused by the battery technology is solved, the range-extended electric automobile can charge the battery on the premise of not stopping, the driving mileage of the electric automobile is greatly expanded, the cost is low, and the range-extended electric automobile gradually becomes a pursuit hot spot of various automobile manufacturers and research institutions.
Drawings
FIG. 1 is a flow chart of a method for charging a battery according to an embodiment of the present invention;
FIG. 2 is a flow chart of another method for charging a battery according to an embodiment of the present invention;
FIG. 3 is a flow chart of another method for charging a battery according to an embodiment of the present invention;
fig. 4 is a schematic functional block diagram of an apparatus for charging a battery according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention will be described in further detail below with reference to the drawings and examples. It should be understood that the particular embodiments described herein are illustrative only and are not limiting of embodiments of the invention. It should be further noted that, for convenience of description, only some, but not all of the structures related to the embodiments of the present invention are shown in the drawings.
Referring to fig. 1, fig. 1 is a flowchart of a method for charging a battery according to an embodiment of the present invention.
As shown in fig. 1, the method for charging a battery includes:
step 101, collecting discharge current of a battery and voltage signals of at least two power supply batteries;
102, judging the working condition state of the automobile according to the discharging current and the at least two voltage signals, and controlling the power supply of the at least two power supply batteries and the opening/closing of the range extender according to different working condition states, wherein the working condition states comprise an acceleration working condition, an acceleration completion working condition and a non-acceleration working condition;
Wherein, the acceleration condition is: the discharge current is increased sharply, and the at least two power supply batteries need to be supplied with power at the same time to ensure enough acceleration power; the acceleration completion conditions are as follows: the battery discharging current is sharply reduced, and the state of being simultaneously supplied by the at least two power supply batteries is restored to the state of being supplied by one battery before acceleration; the non-acceleration conditions are: and determining a power supply battery according to the at least two power supply batteries.
Specifically, as shown in fig. 2, fig. 2 is a flow chart of another method for charging a battery according to an embodiment of the present invention.
The first way is: the controlling the at least two power supply batteries to supply power according to different working conditions comprises:
if the range extender is in an open state and the working condition state is the non-acceleration working condition, judging whether U1 is larger than a first threshold value and U2 is larger than the first threshold value;
if the U1 is larger than the first threshold and the U2 is larger than the first threshold, judging whether the range extender is charging a first power supply battery or not;
if the range extender is charging the first power supply battery, judging whether the first power supply battery is supplying power to the automobile;
If the first power supply battery is judged to supply power to the automobile, switching to a second power supply battery to supply power to the automobile;
wherein, U1 is used for collecting the voltage signal of the first power supply battery; the U2 is used for collecting a voltage signal of the second power supply battery; the first threshold is used to indicate that one of the batteries needs to be charged if the voltage of the battery is lower than the first threshold.
The second way is: the controlling the at least two power supply batteries to supply power according to different working conditions comprises:
if the range extender is in an on state, judging whether U1 is larger than a first threshold value and U2 is larger than the first threshold value;
if not, judging whether the U1 is smaller than the first threshold value and whether the U2 is larger than the first threshold value;
if yes, judging whether the range extender charges the first power supply battery or not; if the range extender is not used for charging the first power supply battery, a charging alarm is sent out;
if the range extender charges the first power supply battery, judging whether the first power supply battery charges the automobile or not; if the first power supply battery is not charging the automobile, the charging process is exited;
if the first power supply battery charges the automobile, switching to the second power supply battery to charge the automobile;
Wherein, U1 is used for collecting the voltage signal of the first power supply battery; the U2 is used for collecting a voltage signal of the second power supply battery; the first threshold is used to indicate that one of the batteries needs to be charged if the voltage of the battery is lower than the first threshold.
The third way is: the controlling the at least two power supply batteries to supply power according to different working conditions comprises:
if the range extender is in an on state, judging whether the U1 is larger than a first threshold value and whether the U2 is larger than the first threshold value;
if not, judging whether the U1 is smaller than the first threshold value and whether the U2 is larger than the first threshold value;
if not, judging whether the U1 is larger than the first threshold value and whether the U2 is smaller than the first threshold value; if not, sending out a charging alarm;
if the U1 is larger than the first threshold and the U2 is smaller than the first threshold, judging whether the range extender is charging the second power supply battery or not; if not, sending out a charging alarm;
if the range extender is used for charging the second power supply battery, judging whether the second power supply battery is used for charging the automobile, and if not, exiting the charging process; if the second power supply battery is charging the automobile, switching to the first power supply battery to supply power to the automobile;
Wherein, U1 is used for collecting the voltage signal of the first power supply battery; the U2 is used for collecting a voltage signal of the second power supply battery; the first threshold is used to indicate that one of the batteries needs to be charged if the voltage of the battery is lower than the first threshold.
The fourth mode is: the controlling the at least two power supply batteries to supply power according to different working conditions comprises:
if the range extender is in an on state, judging whether U1 is larger than a first threshold value and U2 is larger than the first threshold value;
if yes, judging whether the range extender is used for charging a first power supply battery;
if the range extender is not used for charging the first power supply battery, judging whether a second power supply battery is used for supplying power to the automobile; if the second power supply battery is charging the automobile, switching to the first power supply battery to supply power to the automobile; if the second power supply battery is not used for charging the automobile, judging whether the U2 is larger than a second threshold value, if so, closing the range extender;
if the range extender is used for charging the first power supply battery, judging whether the first power supply battery is used for supplying power to the automobile, if the first power supply battery is not used for supplying power to the automobile, judging whether U1 is larger than the second threshold value, and if U1 is larger than the second threshold value, closing the range extender; if the U1 is smaller than or equal to the second threshold value, exiting the power supply program;
Wherein, U1 is used for collecting the voltage signal of the first power supply battery; the U2 is used for collecting a voltage signal of the second power supply battery; the first threshold is used for indicating that one of the battery voltages is lower than the first threshold and indicates that charging is needed; the second threshold value indicates that one of the batteries is being charged and that the rechargeable battery has completed charging when the voltage of the rechargeable battery is above the second threshold value.
The fifth mode is as follows: the controlling the at least two power supply batteries to supply power according to different working conditions comprises:
if the range extender is in a closed state and the working condition state is the non-acceleration working condition, judging whether U1 is larger than the first threshold value and U2 is larger than the first threshold value;
if the U1 is greater than the threshold and the U2 is greater than the first threshold, exiting the charging process;
if not, judging whether the U1 is smaller than the first threshold value and whether the U2 is larger than the first threshold value, and if so, judging whether the first power supply battery is supplying power to the automobile; if the first power supply battery is supplying power to the automobile, switching the second power supply battery to supply power to the automobile, and starting the range extender to supply power to the first power supply battery; if the first power supply battery is not supplying power to the automobile, starting the range extender to supply power to the first power supply battery;
If not, judging whether the U1 is larger than the first threshold value and whether the U2 is smaller than the first threshold value, and if so, judging whether the second power supply battery is supplying power to the automobile; if the second power supply battery is supplying power to the automobile, switching to the first power supply battery to supply power to the automobile, and starting the range extender to supply power to the second power supply battery; if the second power supply battery is not supplying power to the automobile, starting the range extender to supply power to the second power supply battery;
if not, judging that the first power supply battery supplies power to the automobile; if the first power supply battery supplies power to the automobile, the range extender is started to supply power to the second power supply battery, and a charging alarm signal is sent out; if the first power supply battery does not supply power to the automobile, the range extender is started to supply power to the first power supply battery, and a charging alarm signal is sent out;
wherein, U1 is used for collecting the voltage signal of the first power supply battery; the U2 is used for collecting a voltage signal of the second power supply battery; the first threshold is used to indicate that one of the batteries needs to be charged if the voltage of the battery is lower than the first threshold.
Step 103, checking whether the range extender is correctly started according to a starting instruction and charging a power supply battery;
and 104, when an out-of-control fault or a charging alarm signal of the range extender is received, a fault alarm lamp is timely lightened to inform a driver.
Specifically, as shown in fig. 3, fig. 3 is a flow chart of another method for charging a battery according to an embodiment of the present invention.
The first way is: and when receiving the out-of-control fault or the charging alarm signal of the range extender, timely lighting a fault alarm lamp to inform a driver, and comprising the following steps:
if the range extender is correctly started according to the instruction for starting the range extender and charges the battery, checking is needed, and whether the range extender is in a starting state is judged according to the working current of the range extender;
and if the range extender does not start the range extender according to the instruction for starting the range extender, or the range extender receives the instruction for starting the range extender but does not start the range extender, performing fault alarm.
The second mode is as follows: and when receiving the out-of-control fault or the charging alarm signal of the range extender, timely lighting a fault alarm lamp to inform a driver, and comprising the following steps:
if the fault alarm module receives the out-of-control fault of the range extender, the fault alarm lamp is immediately lightened and the driver is informed to find out the out-of-control fault reason of the range extender in time;
And if the fault alarm module receives the charging alarm signal, the fault alarm lamp is immediately lightened, and the driver is informed of timely carrying out external charging on the battery or supplementing gasoline to the range extender.
The embodiment of the invention provides a method for charging a battery, which is used for collecting discharge current of the battery and voltage signals of at least two power supply batteries; judging the working condition states of the automobile according to the discharging current and the at least two voltage signals, and controlling the power supply of the at least two power supply batteries and the opening/closing of the range extender according to different working condition states, wherein the working condition states comprise an acceleration working condition, an acceleration completion working condition and a non-acceleration working condition; checking whether the range extender is correctly started according to a starting instruction and charging a power supply battery; and when an out-of-control fault or a charging alarm signal of the range extender is received, a fault alarm lamp is timely lightened to inform a driver. Therefore, the problem of driving mileage caused by the battery technology is solved, the range-extended electric automobile can charge the battery on the premise of not stopping, the driving mileage of the electric automobile is greatly expanded, the cost is low, and the range-extended electric automobile gradually becomes a pursuit hot spot of various automobile manufacturers and research institutions.
Referring to fig. 4, fig. 4 is a schematic functional block diagram of an apparatus for charging a battery according to an embodiment of the present invention.
As shown in fig. 4, the apparatus includes:
the information acquisition module 401 is used for acquiring a battery discharge current and at least two power supply battery voltage signals;
the increase control module 402 is configured to determine a working condition state of the vehicle according to the battery discharge current and the at least two power supply battery voltage signals, and control the at least two power supply batteries to supply power and the range extender to be turned on/off according to different working condition states, where the working condition states include an acceleration working condition, an acceleration completion working condition and a non-acceleration working condition;
a checking module 403, configured to check whether the range extender is correctly turned on according to an on command and charge the battery;
and the fault alarm module 404 is used for timely lighting a fault alarm lamp to inform a driver when receiving the out-of-control fault or the charging alarm signal of the range extender.
Preferably, the acceleration condition is: the discharge current is increased sharply, and the at least two power supply batteries need to be supplied with power at the same time to ensure enough acceleration power;
the acceleration completion conditions are as follows: the battery discharging current is sharply reduced, and the state of being simultaneously supplied by the at least two power supply batteries is restored to the state of being supplied by one battery before acceleration;
The non-acceleration conditions are: and determining a power supply battery according to the at least two power supply batteries.
Preferably, the range-extending control module 402 is specifically configured to:
if the range extender is in an open state and the working condition state is the non-acceleration working condition, judging whether U1 is larger than a first threshold value and U2 is larger than the first threshold value;
if the U1 is larger than the first threshold and the U2 is larger than the first threshold, judging whether the range extender is charging a first power supply battery or not;
if the range extender is charging the first power supply battery, judging whether the first power supply battery is supplying power to the automobile;
if the first power supply battery is judged to supply power to the automobile, switching to a second power supply battery to supply power to the automobile;
wherein, U1 is used for collecting the voltage signal of the first power supply battery; the U2 is used for collecting a voltage signal of the second power supply battery; the first threshold is used to indicate that one of the batteries needs to be charged if the voltage of the battery is lower than the first threshold.
Preferably, the incremental control module 402 is further specifically configured to:
if the range extender is in an on state, judging whether U1 is larger than a first threshold value and U2 is larger than the first threshold value;
If not, judging whether the U1 is smaller than the first threshold value and whether the U2 is larger than the first threshold value;
if yes, judging whether the range extender charges the first power supply battery or not; if the range extender is not used for charging the first power supply battery, a charging alarm is sent out;
if the range extender charges the first power supply battery, judging whether the first power supply battery charges the automobile or not; if the first power supply battery is not charging the automobile, the charging process is exited;
if the first power supply battery charges the automobile, switching to the second power supply battery to charge the automobile;
wherein, U1 is used for collecting the voltage signal of the first power supply battery; the U2 is used for collecting a voltage signal of the second power supply battery; the first threshold is used to indicate that one of the batteries needs to be charged if the voltage of the battery is lower than the first threshold.
Preferably, the incremental control module 402 is further specifically configured to:
if the range extender is in an on state, judging whether the U1 is larger than a first threshold value and whether the U2 is larger than the first threshold value;
if not, judging whether the U1 is smaller than the first threshold value and whether the U2 is larger than the first threshold value;
If not, judging whether the U1 is larger than the first threshold value and whether the U2 is smaller than the first threshold value; if not, sending out a charging alarm;
if the U1 is larger than the first threshold and the U2 is smaller than the first threshold, judging whether the range extender is charging the second power supply battery or not; if not, sending out a charging alarm;
if the range extender is used for charging the second power supply battery, judging whether the second power supply battery is used for charging the automobile, and if not, exiting the charging process; if the second power supply battery is charging the automobile, switching to the first power supply battery to supply power to the automobile;
wherein, U1 is used for collecting the voltage signal of the first power supply battery; the U2 is used for collecting a voltage signal of the second power supply battery; the first threshold is used to indicate that one of the batteries needs to be charged if the voltage of the battery is lower than the first threshold.
Preferably, the incremental control module 402 is further specifically configured to:
if the range extender is in an on state, judging whether U1 is larger than a first threshold value and U2 is larger than the first threshold value;
if yes, judging whether the range extender is used for charging a first power supply battery;
If the range extender is not used for charging the first power supply battery, judging whether a second power supply battery is used for supplying power to the automobile; if the second power supply battery is charging the automobile, switching to the first power supply battery to supply power to the automobile; if the second power supply battery is not used for charging the automobile, judging whether the U2 is larger than a second threshold value, if so, closing the range extender;
if the range extender is used for charging the first power supply battery, judging whether the first power supply battery is used for supplying power to the automobile, if the first power supply battery is not used for supplying power to the automobile, judging whether U1 is larger than the second threshold value, and if U1 is larger than the second threshold value, closing the range extender; if the U1 is smaller than or equal to the second threshold value, exiting the power supply program;
wherein, U1 is used for collecting the voltage signal of the first power supply battery; the U2 is used for collecting a voltage signal of the second power supply battery; the first threshold is used for indicating that one of the battery voltages is lower than the first threshold and indicates that charging is needed; the second threshold value indicates that one of the batteries is being charged and that the rechargeable battery has completed charging when the voltage of the rechargeable battery is above the second threshold value.
Preferably, the incremental control module 402 is further specifically configured to:
if the range extender is in a closed state and the working condition state is the non-acceleration working condition, judging whether U1 is larger than the first threshold value and U2 is larger than the first threshold value;
if the U1 is greater than the threshold and the U2 is greater than the first threshold, exiting the charging process;
if not, judging whether the U1 is smaller than the first threshold value and whether the U2 is larger than the first threshold value, and if so, judging whether the first power supply battery is supplying power to the automobile; if the first power supply battery is supplying power to the automobile, switching the second power supply battery to supply power to the automobile, and starting the range extender to supply power to the first power supply battery; if the first power supply battery is not supplying power to the automobile, starting the range extender to supply power to the first power supply battery;
if not, judging whether the U1 is larger than the first threshold value and whether the U2 is smaller than the first threshold value, and if so, judging whether the second power supply battery is supplying power to the automobile; if the second power supply battery is supplying power to the automobile, switching to the first power supply battery to supply power to the automobile, and starting the range extender to supply power to the second power supply battery; if the second power supply battery is not supplying power to the automobile, starting the range extender to supply power to the second power supply battery;
If not, judging that the first power supply battery supplies power to the automobile; if the first power supply battery supplies power to the automobile, the range extender is started to supply power to the second power supply battery, and a charging alarm signal is sent out; if the first power supply battery does not supply power to the automobile, the range extender is started to supply power to the first power supply battery, and a charging alarm signal is sent out;
wherein, U1 is used for collecting the voltage signal of the first power supply battery; the U2 is used for collecting a voltage signal of the second power supply battery; the first threshold is used to indicate that one of the batteries needs to be charged if the voltage of the battery is lower than the first threshold.
Preferably, the fault alarm module 404 is specifically configured to:
if the range extender is correctly started according to the instruction for starting the range extender and charges the battery, checking is needed, and whether the range extender is in a starting state is judged according to the working current of the range extender;
and if the range extender does not start the range extender according to the instruction for starting the range extender, or the range extender receives the instruction for starting the range extender but does not start the range extender, performing fault alarm.
Preferably, the failure alarm module 404 is further specifically configured to:
if the fault alarm module receives the out-of-control fault of the range extender, the fault alarm lamp is immediately lightened and the driver is informed to find out the out-of-control fault reason of the range extender in time;
and if the fault alarm module receives the charging alarm signal, the fault alarm lamp is immediately lightened, and the driver is informed of timely carrying out external charging on the battery or supplementing gasoline to the range extender.
The embodiment of the invention provides a device for charging a battery, which is used for collecting discharge current of the battery and voltage signals of at least two power supply batteries; judging the working condition states of the automobile according to the discharging current and the at least two voltage signals, and controlling the power supply of the at least two power supply batteries and the opening/closing of the range extender according to different working condition states, wherein the working condition states comprise an acceleration working condition, an acceleration completion working condition and a non-acceleration working condition; checking whether the range extender is correctly started according to a starting instruction and charging a power supply battery; and when an out-of-control fault or a charging alarm signal of the range extender is received, a fault alarm lamp is timely lightened to inform a driver. Therefore, the problem of driving mileage caused by the battery technology is solved, the range-extended electric automobile can charge the battery on the premise of not stopping, the driving mileage of the electric automobile is greatly expanded, the cost is low, and the range-extended electric automobile gradually becomes a pursuit hot spot of various automobile manufacturers and research institutions.
The technical principles of the embodiments of the present invention are described above in connection with specific embodiments. The description is only intended to explain the principles of the embodiments of the invention and should not be taken in any way as limiting the scope of the embodiments of the invention. Based on the explanations herein, those skilled in the art will recognize other embodiments of the present invention without undue burden, and those ways that are within the scope of the present invention.
Claims (9)
1. A method of charging a battery, the method comprising:
collecting discharge current of the battery and voltage signals of at least two power supply batteries;
the at least two power supply batteries comprise a first power supply battery and a second power supply battery;
judging the working condition states of the automobile according to the discharging current and at least two voltage signals, and controlling the power supply of at least two power supply batteries and the opening/closing of a range extender according to different working condition states, wherein the working condition states comprise an acceleration working condition, an acceleration completion working condition and a non-acceleration working condition;
checking whether the range extender is correctly started according to a starting instruction and charging a power supply battery;
when an out-of-control fault or a charging alarm signal of the range extender is received, a fault alarm lamp is timely lightened to inform a driver;
The acceleration working condition is as follows: the discharge current is increased sharply, and the at least two power supply batteries need to be supplied with power at the same time to ensure enough acceleration power;
the acceleration completion conditions are as follows: the battery discharging current is sharply reduced, and the state of being simultaneously supplied by the at least two power supply batteries is restored to the state of being supplied by one battery before acceleration;
the non-acceleration conditions are: and determining a power supply battery according to the at least two power supply batteries.
2. The method of claim 1, wherein said controlling said at least two power cells to provide power according to different operating conditions comprises:
if the range extender is in an open state and the working condition state is the non-acceleration working condition, judging whether U1 is larger than a first threshold value and U2 is larger than the first threshold value;
if the U1 is larger than the first threshold and the U2 is larger than the first threshold, judging whether the range extender is charging a first power supply battery or not;
if the range extender is charging the first power supply battery, judging whether the first power supply battery is supplying power to the automobile;
if the first power supply battery is judged to supply power to the automobile, switching to a second power supply battery to supply power to the automobile;
Wherein, U1 is used for collecting the voltage signal of the first power supply battery; the U2 is used for collecting a voltage signal of the second power supply battery; the first threshold is used to indicate that one of the batteries needs to be charged if the voltage of the battery is lower than the first threshold.
3. The method of claim 1, wherein said controlling said at least two power cells to provide power according to different operating conditions comprises:
if the range extender is in an on state, judging whether U1 is larger than a first threshold value and U2 is larger than the first threshold value;
if not, judging whether the U1 is smaller than the first threshold value and whether the U2 is larger than the first threshold value;
if yes, judging whether the range extender charges the first power supply battery or not; if the range extender is not used for charging the first power supply battery, a charging alarm is sent out;
if the range extender charges the first power supply battery, judging whether the first power supply battery supplies power to the automobile or not; if the first power supply battery is not supplying power to the automobile, the charging process is exited;
if the first power supply battery supplies power to the automobile, switching to the second power supply battery to supply power to the automobile;
Wherein, U1 is used for collecting the voltage signal of the first power supply battery; the U2 is used for collecting a voltage signal of the second power supply battery; the first threshold is used to indicate that one of the batteries needs to be charged if the voltage of the battery is lower than the first threshold.
4. The method of claim 1, wherein said controlling said at least two power cells to provide power according to different operating conditions comprises:
if the range extender is in an on state, judging whether U1 is larger than a first threshold value and U2 is larger than the first threshold value;
if not, judging whether the U1 is smaller than the first threshold value and whether the U2 is larger than the first threshold value;
if not, judging whether the U1 is larger than the first threshold value and whether the U2 is smaller than the first threshold value; if not, sending out a charging alarm;
if the U1 is larger than the first threshold and the U2 is smaller than the first threshold, judging whether the range extender is charging the second power supply battery or not; if not, sending out a charging alarm;
if the range extender is used for charging the second power supply battery, judging whether the second power supply battery is used for supplying power to the automobile, and if not, exiting the charging process; if the second power supply battery is supplying power to the automobile, switching to the first power supply battery to supply power to the automobile;
Wherein, U1 is used for collecting the voltage signal of the first power supply battery; the U2 is used for collecting a voltage signal of the second power supply battery; the first threshold is used to indicate that one of the batteries needs to be charged if the voltage of the battery is lower than the first threshold.
5. The method of claim 1, wherein said controlling said at least two power cells to provide power according to different operating conditions comprises:
if the range extender is in an on state, judging whether U1 is larger than a first threshold value and U2 is larger than the first threshold value;
if yes, judging whether the range extender is used for charging a first power supply battery;
if the range extender is not used for charging the first power supply battery, judging whether a second power supply battery is used for supplying power to the automobile; if the second power supply battery is supplying power to the automobile, switching to the first power supply battery to supply power to the automobile; if the second power supply battery is not supplying power to the automobile, judging whether the U2 is larger than a second threshold value, if so, closing the range extender;
if the range extender is used for charging the first power supply battery, judging whether the first power supply battery is used for supplying power to the automobile, if the first power supply battery is not used for supplying power to the automobile, judging whether U1 is larger than the second threshold value, and if U1 is larger than the second threshold value, closing the range extender; if the U1 is smaller than or equal to the second threshold value, exiting the power supply program;
Wherein, U1 is used for collecting the voltage signal of the first power supply battery; the U2 is used for collecting a voltage signal of the second power supply battery; the first threshold is used for indicating that one of the battery voltages is lower than the first threshold and indicates that charging is needed; the second threshold value indicates that one of the batteries is being charged and that the rechargeable battery has completed charging when the voltage of the rechargeable battery is above the second threshold value.
6. The method of claim 1, wherein said controlling said at least two power cells to provide power according to different operating conditions comprises:
if the range extender is in a closed state and the working condition state is the non-acceleration working condition, judging whether U1 is larger than a first threshold value and U2 is larger than the first threshold value;
if the U1 is greater than the first threshold and the U2 is greater than the first threshold, exiting the charging process;
if not, judging whether the U1 is smaller than the first threshold value and whether the U2 is larger than the first threshold value, and if so, judging whether the first power supply battery is supplying power to the automobile; if the first power supply battery is supplying power to the automobile, switching the second power supply battery to supply power to the automobile, and starting the range extender to supply power to the first power supply battery; if the first power supply battery is not supplying power to the automobile, starting the range extender to supply power to the first power supply battery;
If not, judging whether the U1 is larger than the first threshold value and whether the U2 is smaller than the first threshold value, and if so, judging whether the second power supply battery is supplying power to the automobile; if the second power supply battery is supplying power to the automobile, switching to the first power supply battery to supply power to the automobile, and starting the range extender to supply power to the second power supply battery; if the second power supply battery is not supplying power to the automobile, starting the range extender to supply power to the second power supply battery;
if not, judging whether the first power supply battery supplies power to the automobile or not; if the first power supply battery supplies power to the automobile, the range extender is started to supply power to the second power supply battery, and a charging alarm signal is sent out; if the first power supply battery does not supply power to the automobile, the range extender is started to supply power to the first power supply battery, and a charging alarm signal is sent out;
wherein, U1 is used for collecting the voltage signal of the first power supply battery; the U2 is used for collecting a voltage signal of the second power supply battery; the first threshold is used to indicate that one of the batteries needs to be charged if the voltage of the battery is lower than the first threshold.
7. The method according to any one of claims 1 to 6, wherein upon receiving a runaway failure or charging alarm signal of the range extender, a failure alarm lamp is turned on in time to notify a driver, comprising:
if the range extender is correctly started according to the instruction for starting the range extender and charges the battery, checking is needed, and whether the range extender is in a starting state is judged according to the working current of the range extender;
and if the range extender does not start the range extender according to the instruction for starting the range extender, or the range extender receives the instruction for starting the range extender but does not start the range extender, performing fault alarm.
8. The method of claim 7, wherein upon receipt of the runaway fault or charge warning signal of the range extender, illuminating a fault warning light in time to notify a driver, comprising:
if the fault alarm module receives the out-of-control fault of the range extender, the fault alarm lamp is immediately lightened and the driver is informed to find out the out-of-control fault reason of the range extender in time;
and if the fault alarm module receives the charging alarm signal, the fault alarm lamp is immediately lightened, and the driver is informed of timely carrying out external charging on the battery or supplementing gasoline to the range extender.
9. An apparatus for charging a battery, controlled by the method for charging a battery according to any one of claims 1 to 8, comprising:
the information acquisition module is used for acquiring battery discharge current and at least two power supply battery voltage signals;
the range extender control module is used for judging the working condition state of the automobile according to the battery discharging current and the at least two power supply battery voltage signals, and controlling the at least two power supply batteries to supply power and the range extender to be turned on/off according to different working condition states, wherein the working condition states comprise an acceleration working condition, an acceleration finishing working condition and a non-acceleration working condition;
the checking module is used for checking whether the range extender is correctly started according to the starting instruction and charging the battery;
and the fault alarm module is used for timely lighting a fault alarm lamp to inform a driver when receiving the out-of-control fault or the charging alarm signal of the range extender.
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