CN116279219A - New energy automobile storage battery electricity supplementing method and system - Google Patents
New energy automobile storage battery electricity supplementing method and system Download PDFInfo
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- CN116279219A CN116279219A CN202310332943.3A CN202310332943A CN116279219A CN 116279219 A CN116279219 A CN 116279219A CN 202310332943 A CN202310332943 A CN 202310332943A CN 116279219 A CN116279219 A CN 116279219A
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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
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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
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
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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
- B60R16/04—Arrangement of batteries
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2210/00—Converter types
- B60L2210/10—DC to DC converters
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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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- Power Engineering (AREA)
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- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Transportation (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention provides a new energy automobile storage battery electricity supplementing method and system, wherein the method comprises the following steps: when the vehicle is in a power OFF mode and the vehicle is in fortification, the vehicle-mounted T-Box wakes up locally every early morning, the voltage of the B+ port of the vehicle is detected, and when the voltage is smaller than a set voltage value, the vehicle-mounted T-Box wakes up the CAN network and the electric quantity sensor of the whole vehicle; the vehicle-mounted T-Box judges whether the power supply condition is met according to the accuracy of the electric quantity sensor, the electric quantity of the storage battery and the health state of the storage battery, if so, the next step is executed, and if not, the storage battery is not supplied with power; the vehicle-mounted T-Box sends a power supply request signal to the vehicle-mounted controller, if the vehicle-mounted controller feeds back an allowable power supply signal to the vehicle-mounted T-Box, the power supply to the storage battery is performed until a power supply exit condition is met, and the power supply to the storage battery is stopped; if the power supplementing request is not allowed, the storage battery is not supplemented with power. The invention can make the vehicle not easy to be started.
Description
Technical Field
The invention belongs to the technical field of new energy automobiles, and particularly relates to a method and a system for supplementing electricity to a storage battery of a new energy automobile.
Background
In the conventional fuel-fired vehicle, in the process that the vehicle is not started, the electricity consumption of the whole vehicle mainly comes from a storage battery (also can be called as a starting storage battery), and meanwhile, in the long-time stationary process of the vehicle, the situation that the storage battery is deficient and cannot be started often occurs due to the fact that the whole vehicle is subjected to static current consumption and self-discharging of the storage battery.
The new energy automobile is provided with the high-voltage power battery, and the power battery is used for supplying electricity to the storage battery, so that the situation that the vehicle cannot be normally used due to the fact that the storage battery is started to run out of power after the vehicle is stationary for a long time is avoided. In the prior art, whether to supplement electricity is judged by detecting the voltage of the storage battery, but the voltage of the storage battery cannot accurately feed back the electric quantity of the storage battery, and the error is relatively large when the voltage of the storage battery is taken as a judging condition, so that the situation that the new energy automobile cannot be started easily still occurs. Therefore, how to design a new energy automobile storage battery power supplementing method and system to effectively reduce the possibility of the phenomenon that the new energy automobile cannot be started is a technical problem which needs to be solved by the skilled person.
Disclosure of Invention
The invention aims to provide a new energy automobile storage battery electricity supplementing method for solving the technical problems in the prior art. The invention also provides a new energy automobile storage battery electricity supplementing system.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a new energy automobile storage battery electricity supplementing method comprises the following steps:
step S1, when a vehicle is in a power OFF mode and the vehicle is in fortification, the vehicle-mounted T-Box wakes up locally every early morning, firstly, the voltage of a B+ port of the vehicle-mounted T-Box is detected, when the voltage is smaller than a set voltage value, the vehicle-mounted T-Box sends a network management message to wake up the CAN network of the whole vehicle, and meanwhile, an electric quantity sensor connected to a slave node of the LIN bus is wakened up;
step S2, the vehicle-mounted T-Box judges whether the power supply condition is met or not according to the accuracy of the electric quantity sensor, the electric quantity of the storage battery sent by the electric quantity sensor and the health state of the storage battery, if yes, the step S3 is executed, and if no, the power supply to the storage battery is not carried out;
s3, the vehicle-mounted T-Box sends a power supply request signal to the whole vehicle controller, after the whole vehicle controller receives the power supply request signal, the whole vehicle controller judges whether the electric quantity of the power battery is larger than a first set threshold value, if the electric quantity of the power battery is larger than the first set threshold value, the whole vehicle controller feeds back an allowable power supply signal to the vehicle-mounted T-Box, the vehicle-mounted T-Box controls the DCDC converter to supply power to the storage battery until a power supply exit condition is met, and then the vehicle-mounted T-Box controls the DCDC converter to stop supplying power to the storage battery; if the electric quantity of the power battery is smaller than the first set threshold value, the whole vehicle controller feeds back a power supplementing request disallowing signal to the vehicle-mounted T-Box, and the storage battery is not supplemented with power.
Preferably, in step S1, the voltage value is set to 11.6V-13V.
Preferably, in step S1, the local wake-up time of the on-board T-Box is 1 to 3 am every day.
Preferably, in step S3, the power-up exit condition is that the electric quantity of the storage battery reaches a second set threshold.
Preferably, in step S3, the power-up exit condition is that the power-up duration reaches 30 minutes.
Preferably, it further comprises: when the vehicle is stationary for a long time, after each wake-up, the vehicle-mounted T-Box calculates average static current according to the electric quantity of the storage battery and the electric quantity of the storage battery at the last time, and when the average static current is larger than a third set threshold value, the vehicle-mounted T-Box reminds a driver.
Preferably, the third set threshold is 45mA-55mA.
Preferably, the method for reminding the driver is as follows: the APP installed on the mobile phone of the driver is used for pushing reminding information to the driver.
Preferably, in an ignition cycle, after the storage battery is charged for 6 times, the storage battery is not charged any more, and if the average static current is still greater than the third set threshold value at this time, the vehicle-mounted T-Box reports the low electric quantity early warning information of the storage battery and reminds the driver.
A new energy automobile battery electricity supplementing system comprises:
the electric quantity sensor is arranged on the storage battery and used for detecting the electric quantity of the storage battery;
the vehicle-mounted T-Box is in communication connection with the electric quantity sensor and the DCDC converter, and is used for receiving an electric quantity signal of the storage battery sent by the electric quantity sensor and judging whether to send a power supplementing request signal to the whole vehicle controller according to the electric quantity of the storage battery, the health state of the storage battery and the precision of the electric quantity sensor;
the whole vehicle controller is in communication connection with the vehicle-mounted T-Box and the power battery;
after receiving the power supply request signal, the whole vehicle controller judges whether the electric quantity of the power battery is larger than a first set threshold value, if the electric quantity of the power battery is larger than the first set threshold value, the vehicle-mounted T-Box controls the DCDC converter to supply power to the storage battery until a power supply exit condition is met, then the vehicle-mounted T-Box controls the DCDC converter to stop supplying power to the storage battery, and meanwhile the whole vehicle controller feeds back the power supply exit signal to the vehicle-mounted T-Box; if the electric quantity of the power battery is smaller than the first set threshold value, the whole vehicle controller feeds back a power supplementing request disallowing signal to the vehicle-mounted T-Box, and the storage battery is not supplemented with power.
The invention has the beneficial effects that:
according to the new energy automobile storage battery power supply method, when the method is used, the vehicle-mounted T-Box adopts a timing local wake-up strategy, the voltage of the B+ port of the vehicle-mounted T-Box is judged firstly, when the voltage of the B+ port is lower, the electric quantity of the storage battery is indicated to be low, and the whole automobile network is only wake-up at the moment, so that the whole automobile network is not required to be wake-up when the electric quantity of the storage battery is high, the whole automobile static current can be effectively reduced, and the electric quantity is saved; meanwhile, the vehicle-mounted T-Box comprehensively judges whether the electricity supplementing condition is met through the precision of the current sensor, the electric quantity of the storage battery, the health state of the storage battery and other information, and after the electricity supplementing condition is met, a electricity supplementing request is sent to the VCU, and the electric quantity of the storage battery is well ensured through the DCDC converter, so that the possibility that the vehicle cannot be normally electrified and started due to the electric quantity of the storage battery is effectively reduced.
The new energy automobile storage battery power supply system provided by the invention has the beneficial effects.
Drawings
For a clearer description of embodiments of the present application or of the prior art, reference will be made briefly to the drawings which are required to be used in the embodiments, and a further detailed description of specific embodiments of the invention will be given with reference to the accompanying drawings, in which
FIG. 1 is a flow chart of a new energy automobile storage battery power supplementing method provided by an embodiment of the invention;
fig. 2 is a schematic diagram of a battery recharging system of a new energy automobile according to an embodiment of the present invention;
fig. 3 is another architecture diagram of a new energy automobile storage battery power supply system provided by an embodiment of the invention.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present solution will be described in further detail with reference to specific embodiments.
As shown in fig. 1, the embodiment of the invention provides a new energy automobile storage battery electricity supplementing method, which comprises the following steps:
step S1, when a vehicle is in a power OFF mode and the vehicle is in fortification, a vehicle-mounted T-Box (Chinese is fully called as a vehicle-mounted intelligent interconnection terminal) wakes up locally every early morning, firstly, the voltage of a B+ port of the vehicle-mounted T-Box is detected, when the voltage is smaller than a set voltage value, the vehicle-mounted T-Box sends a network management message to wake up a CAN network of the whole vehicle, and meanwhile, an electric quantity sensor (English is simply called as IBS) connected to a slave node of a LIN bus is wakened up;
step S2, the vehicle-mounted T-Box judges whether the power supply condition is met or not according to the accuracy of the electric quantity sensor, the electric quantity of the storage battery sent by the electric quantity sensor and the state of health of the storage battery, namely the SOH of the storage battery, if yes, the step S3 is executed, and if no, the power supply of the storage battery is not carried out;
step S3, the vehicle-mounted T-Box sends a power supply request signal to a vehicle-mounted controller (English is called VCU for short), after the VCU receives the power supply request signal, whether the electric quantity of the power battery is larger than a first set threshold value is judged, if the electric quantity of the power battery is larger than the first set threshold value, the vehicle-mounted controller feeds back an allowable power supply signal to the vehicle-mounted T-Box, the vehicle-mounted T-Box controls the DCDC converter to supply power to the storage battery until a power supply exit condition is met, and then the vehicle-mounted T-Box controls the DCDC converter to stop supplying power to the storage battery; if the electric quantity of the power battery is smaller than the first set threshold value, the whole vehicle controller feeds back a power supplementing request disallowing signal to the vehicle-mounted T-Box, and the storage battery is not supplemented with power.
According to the new energy automobile storage battery power supply method provided by the embodiment of the invention, when the new energy automobile storage battery power supply method is used, the on-board T-Box adopts a timing local wake-up strategy, the voltage of the B+ port of the on-board T-Box is judged firstly, when the voltage of the B+ port is lower, the low electric quantity of the storage battery is indicated, and the whole automobile network is not required to be waken at the moment, so that the whole automobile static current is effectively reduced, and the electric quantity is saved; meanwhile, the vehicle-mounted T-Box comprehensively judges whether the electricity supplementing condition is met through the precision of the current sensor, the electric quantity of the storage battery, the health state of the storage battery and other information, and after the electricity supplementing condition is met, a electricity supplementing request is sent to the VCU, and the electric quantity of the storage battery is well ensured through the DCDC converter, so that the possibility that the vehicle cannot be normally electrified and started due to the electric quantity of the storage battery is effectively reduced, and the situation that the vehicle cannot be started easily is avoided.
Further, in step S1, the voltage value is set to 11.6V-13V, and may be preferably 12.3V.
Specifically, in step S1, the local wake-up time of the vehicle-mounted T-Box is 1 to 3 am per day, and may preferably be 2 am per day. It is understood that the vehicle-mounted T-Box is connected to the LIN's master node.
In an embodiment of the present invention, in step S3, the power-up exit condition is that the electric quantity of the storage battery reaches a second set threshold.
In another embodiment of the present invention, in step S3, the power-up exit condition is that the power-up duration reaches 30 minutes.
It will be appreciated that the power cell may cease recharging the battery when one of the two recharging exit conditions is met.
Further, the method for supplementing electricity to the storage battery of the new energy automobile provided by the embodiment of the invention further comprises the following steps: when the vehicle is stationary for a long time, after each wake-up, the vehicle-mounted T-Box calculates average static current according to the electric quantity of the storage battery and the electric quantity of the storage battery at the last time, and when the average static current is larger than a third set threshold value, the vehicle-mounted T-Box reminds a driver. By adopting the scheme, the driver can be timely reminded of paying attention to the abnormal condition of the static current of the whole vehicle.
The calculation formula of the average static current is as follows:
I quiescent current Representing average quiescent current, SOC This time Representing the electric quantity and SOC of the storage battery Last time Representing the last battery charge.
Specifically, the third set threshold is 45mA to 55mA, and may be preferably 50mA.
Further, the method for reminding the driver comprises the following steps: the APP installed on the mobile phone of the driver is used for pushing reminding information to the driver. Of course, the mobile network operation platform can also send a short message prompt to the mobile phone of the driver.
Specifically, in an ignition cycle, after the storage battery is charged for 6 times, the storage battery is not charged any more, and if the average static current is still greater than the third set threshold value at this time, the vehicle-mounted T-Box reports low-battery early warning information to the background (namely, an automobile remote service provider) and reminds the driver. It can be understood that the reminding message or the short message reminding content pushed by the APP can be "the whole vehicle has abnormal quiescent current, and the vehicle has the power shortage risk and is required to go to a 4S shop for investigation.
In a specific embodiment, the onboard T-Box determines whether the power up condition is satisfied according to the data in Table 1. As can be seen from the table, when the accuracy of the electric quantity sensor of the storage battery is not more than 5%, and the electric quantity of the storage battery is less than 40%/SOH, the electric quantity compensation condition is satisfied, and the second set threshold is 60%/SOH; when the accuracy of the electric quantity sensor of the storage battery is more than 5%, the electric quantity of the storage battery is less than 45%/SOH, the electric quantity compensation condition is met, and the second set threshold value is 65%/SOH.
Table 1 parameters relating to the battery
The VCU determines whether to allow the power up request based on the data in table 2. As can be seen from the table, when the accuracy of the power battery level sensor is not greater than 5%, the first set threshold value in the step S3 is 10%; when the accuracy of the power battery level sensor is greater than 5%, the first set threshold in the step S3 is 15%.
Table 2 parameters relating to the power cells
As shown in fig. 2, the embodiment of the invention further provides a new energy automobile storage battery electricity supplementing system, which comprises:
the electric quantity sensor is arranged on the storage battery and used for detecting the electric quantity of the storage battery;
the vehicle-mounted T-Box is in communication connection with the electric quantity sensor and the DCDC converter, and is used for receiving the electric quantity signal of the storage battery sent by the electric quantity sensor and judging whether to send a power supplementing request signal to the whole vehicle controller according to the electric quantity of the storage battery, the health state of the storage battery and the precision of the electric quantity sensor;
the whole vehicle controller is in communication connection with the vehicle-mounted T-Box and the power battery;
after receiving the power supply request signal, the whole vehicle controller judges whether the electric quantity of the power battery is larger than a first set threshold value, if the electric quantity of the power battery is larger than the first set threshold value, the vehicle-mounted T-Box controls the DCDC converter, connection between the DCDC converter and the storage battery is closed, the power battery directly supplements power to the storage battery through the DCDC converter until a power supply exit condition is met, at the moment, the vehicle-mounted T-Box controls the DCDC converter to disconnect the connection between the DCDC converter and the storage battery, the power battery stops supplying power to the storage battery, and meanwhile, the whole vehicle controller feeds back a power supply exit state signal to the vehicle-mounted T-Box, and then the whole vehicle controller enters a sleep mode; if the electric quantity of the power battery is smaller than the first set threshold value, the whole vehicle controller feeds back a power supplementing request disallowing signal to the vehicle-mounted T-Box, and the storage battery is not supplemented with power.
The new energy automobile storage battery power supply system provided by the embodiment of the invention has the same technical effects.
Further, as shown in fig. 3, the new energy automobile storage battery electricity supplementing system further comprises a power isolation device in communication connection with the vehicle-mounted T-Box, wherein the power isolation device is connected in series in a negative pole loop of the storage battery, and is provided with an isolating switch arranged on the negative pole loop and a control module for controlling the opening and closing of the isolating switch, and the isolating switch is in a normally closed state; the vehicle is provided with a trigger for closing the isolating switch.
By adopting the scheme, when the electric quantity of the power battery is smaller than the first set threshold, the whole vehicle controller feeds back a power supplementing request disallowing signal to the vehicle-mounted T-Box, the vehicle-mounted T-Box sends an isolation signal to the power isolation device, and after receiving the isolation signal, the control module of the power isolation device turns off the isolation switch to enable the whole vehicle to be powered off, and at the moment, the static current is 0, only the storage battery is self-discharged, and the electric quantity of the storage battery is hardly reduced, so that the normal starting of the vehicle can be ensured; when the vehicle is needed to be used, the switch on the left front door handle or the trunk is turned on by pressing the trigger piece, the switch is directly connected to the power isolation device, when the switch is pressed down, the power isolation device can be directly awakened, the isolation switch is controlled to be closed by the control module of the power isolation device, the whole vehicle is electrified, and the vehicle can be started by using the storage battery. Normally, the isolating switch is normally closed, and the power isolating device is in real-time communication with the vehicle-mounted T-Box.
Preferably, the DCDC converter and the power isolation device are respectively connected with the vehicle-mounted T-Box through CAN buses in a communication way. It is understood that the DCDC converter controls the on-off of a power supply line between the DCDC converter and the storage battery according to a control signal sent by the vehicle-mounted T-Box.
According to the invention, the SOH judgment condition and algorithm of the storage battery are added, the power supply quantity is correspondingly increased along with the increase of the aging degree of the battery, the state of the battery electric quantity is ensured, and the triggering condition of the power supply is judged by collecting the real-time SOC value of the storage battery and combining with the algorithm of the SOH value; the vehicle is timely charged after the long-time static electricity quantity is reduced, so that the storage battery is ensured to have sufficient electricity quantity for the vehicle to be electrified and started.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that these examples are only for illustrating the present invention and are not intended to limit the scope of the present invention, and that various changes and modifications may be made by one skilled in the art after reading the present disclosure, and the equivalent forms thereof fall within the scope of the appended claims.
Claims (10)
1. The new energy automobile storage battery electricity supplementing method is characterized by comprising the following steps of:
step S1, when a vehicle is in a power OFF mode and the vehicle is in fortification, the vehicle-mounted T-Box wakes up locally every early morning, firstly, the voltage of a B+ port of the vehicle-mounted T-Box is detected, when the voltage is smaller than a set voltage value, the vehicle-mounted T-Box sends a network management message to wake up the CAN network of the whole vehicle, and meanwhile, an electric quantity sensor connected to a slave node of the LIN bus is wakened up;
step S2, the vehicle-mounted T-Box judges whether the power supply condition is met or not according to the accuracy of the electric quantity sensor, the electric quantity of the storage battery sent by the electric quantity sensor and the health state of the storage battery, if yes, the step S3 is executed, and if no, the power supply to the storage battery is not carried out;
s3, the vehicle-mounted T-Box sends a power supply request signal to the whole vehicle controller, after the whole vehicle controller receives the power supply request signal, the whole vehicle controller judges whether the electric quantity of the power battery is larger than a first set threshold value, if the electric quantity of the power battery is larger than the first set threshold value, the whole vehicle controller feeds back an allowable power supply signal to the vehicle-mounted T-Box, the vehicle-mounted T-Box controls the DCDC converter to supply power to the storage battery until a power supply exit condition is met, and then the vehicle-mounted T-Box controls the DCDC converter to stop supplying power to the storage battery; if the electric quantity of the power battery is smaller than the first set threshold value, the whole vehicle controller feeds back a power supplementing request disallowing signal to the vehicle-mounted T-Box, and the storage battery is not supplemented with power.
2. The method for charging a storage battery of a new energy automobile according to claim 1, wherein in step S1, the voltage value is set to 11.6V-13V.
3. The method for recharging a storage battery of a new energy automobile according to claim 1, wherein in the step S1, the local wake-up time of the vehicle T-Box is 1 to 3 am.
4. The method according to claim 1, wherein in step S3, the power-up exit condition is that the electric quantity of the battery reaches a second set threshold.
5. The method for recharging a storage battery of a new energy automobile according to claim 1, wherein in the step S3, the recharging exit condition is that the recharging duration is up to 30 minutes.
6. The method for recharging a storage battery of a new energy automobile according to claim 1, further comprising: when the vehicle is stationary for a long time, after each wake-up, the vehicle-mounted T-Box calculates average static current according to the electric quantity of the storage battery and the electric quantity of the storage battery at the last time, and when the average static current is larger than a third set threshold value, the vehicle-mounted T-Box reminds a driver.
7. The method for recharging a storage battery of a new energy automobile according to claim 6, wherein the third set threshold is 45mA-55mA.
8. The method for supplementing electricity to the storage battery of the new energy automobile according to claim 6, wherein the method for reminding the driver is as follows: the APP installed on the mobile phone of the driver is used for pushing reminding information to the driver.
9. The method for recharging a storage battery of a new energy automobile according to claim 6, wherein in one ignition cycle, after the storage battery is recharged for 6 times, the storage battery is not recharged any more, and if the average static current is still greater than a third set threshold value at this time, the vehicle-mounted T-Box reports the low battery early warning information and reminds a driver.
10. The utility model provides a new energy automobile battery moisturizing system which characterized in that, it includes:
the electric quantity sensor is arranged on the storage battery and used for detecting the electric quantity of the storage battery;
the vehicle-mounted T-Box is in communication connection with the electric quantity sensor and the DCDC converter, and is used for receiving an electric quantity signal of the storage battery sent by the electric quantity sensor and judging whether to send a power supplementing request signal to the whole vehicle controller according to the electric quantity of the storage battery, the health state of the storage battery and the precision of the electric quantity sensor;
the whole vehicle controller is in communication connection with the vehicle-mounted T-Box and the power battery;
after receiving the power supply request signal, the whole vehicle controller judges whether the electric quantity of the power battery is larger than a first set threshold value, if the electric quantity of the power battery is larger than the first set threshold value, the vehicle-mounted T-Box controls the DCDC converter to supply power to the storage battery until a power supply exit condition is met, then the vehicle-mounted T-Box controls the DCDC converter to stop supplying power to the storage battery, and meanwhile the whole vehicle controller feeds back the power supply exit signal to the vehicle-mounted T-Box; if the electric quantity of the power battery is smaller than the first set threshold value, the whole vehicle controller feeds back a power supplementing request disallowing signal to the vehicle-mounted T-Box, and the storage battery is not supplemented with power.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310332943.3A CN116279219A (en) | 2023-03-31 | 2023-03-31 | New energy automobile storage battery electricity supplementing method and system |
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| CN202310332943.3A CN116279219A (en) | 2023-03-31 | 2023-03-31 | New energy automobile storage battery electricity supplementing method and system |
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| CN116279219A true CN116279219A (en) | 2023-06-23 |
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| CN202310332943.3A Pending CN116279219A (en) | 2023-03-31 | 2023-03-31 | New energy automobile storage battery electricity supplementing method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117799492A (en) * | 2023-09-15 | 2024-04-02 | 宁德时代(上海)智能科技有限公司 | Vehicle, and compensation control method, device, vehicle-mounted controller and storage medium thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117799492A (en) * | 2023-09-15 | 2024-04-02 | 宁德时代(上海)智能科技有限公司 | Vehicle, and compensation control method, device, vehicle-mounted controller and storage medium thereof |
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