CN112895977A - Intelligent power supplementing method for automobile starting power supply - Google Patents
Intelligent power supplementing method for automobile starting power supply Download PDFInfo
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- CN112895977A CN112895977A CN202110329352.1A CN202110329352A CN112895977A CN 112895977 A CN112895977 A CN 112895977A CN 202110329352 A CN202110329352 A CN 202110329352A CN 112895977 A CN112895977 A CN 112895977A
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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
-
- 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
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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
- 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
- B60L53/20—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 characterised by converters located in the vehicle
- B60L53/22—Constructional details or arrangements of charging converters specially adapted for charging electric vehicles
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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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- 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
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to a method for charging a storage battery of an electric automobile, in particular to an intelligent power supplementing method for an automobile starting power supply. An intelligent power supplementing method for an automobile starting power supply comprises the following steps: (1) detecting and judging conditions of 12V storage battery voltage; (2) the DCDC supplies power to the 12V storage battery; (3) and reminding and timing again after the intelligent power supply is finished. Compared with the prior art beneficial effect that has: (1) the demand of the static days of the whole vehicle on the capacity of the storage battery is reduced, the capacity of the storage battery can be reduced, and the positive effect on the cost and the weight target of the whole vehicle is achieved. (2) The voltage value is used as an intelligent power supply judgment condition, so that the development work of the storage battery sensor is reduced, and the development period and the development cost are reduced. (3) When the static current is too large due to faults of the whole vehicle, the risk of power shortage of the 12V storage battery is reduced, and the influence of a customer on the use of the vehicle is reduced.
Description
Technical Field
The invention relates to a method for charging a storage battery of an electric automobile, in particular to an intelligent power supplementing method for an automobile starting power supply.
Background
At present, new energy automobiles, other electric automobiles, have a good development trend. The electric automobile is a vehicle driven by a vehicle-mounted power supply and wheels driven by a motor to run. The applicant expounds the current situation problem of the current electric automobile industry from three aspects, thereby developing the necessity and the inevitable trend of intelligent power supplement of the automobile vehicle-mounted starting power supply.
Firstly, the vehicle-mounted 12V storage battery has the following functions:
1. when the vehicle is started, a continuous starting power supply is provided for the whole vehicle;
2. when the vehicle is not started, a short-time continuous power supply is provided for auxiliary electric equipment in the vehicle;
3. when the power consumption demand of electric appliances of the vehicle exceeds the electric quantity output by the DCDC (or the generator), the storage battery can provide short-time continuous current for the whole vehicle;
secondly, when the vehicle is left standing for too long or when the frequency of use of the vehicle is too low, the phenomenon of feeding the 12V starting storage battery is easy to occur, and even the problem that the vehicle cannot be started occurs, so that complaints of users are caused, and the use of the vehicle is influenced.
Thirdly, in the conventional design, the vehicle-mounted 12V starting storage battery charges the whole vehicle 12V storage battery through the DCDC (or the generator) only after the vehicle is started, and provides a continuous power supply for a whole vehicle low-voltage power system, but cannot realize the function of completing active compensation on the 12V power supply during the vehicle static discharge period.
On the basis of the current technical conditions of the automobile, a technical scheme for realizing automatic power supply or reminding when the electric quantity is too low should be designed.
VCU is vehicle control unit, T-BOX is vehicle networking controller, DCDC represents direct current to direct current controller, HU represents the multimedia display screen, BCM is automobile body controller, SOC represents the residual capacity value of group battery.
Disclosure of Invention
The invention creates the technical problems to be solved:
(1) the risk that the 12V storage battery is easy to feed due to poor charging receiving capacity of the storage battery is solved;
(2) the problem of 12V storage battery feed caused by overlong standing days or low use frequency of the vehicle is solved;
(3) through the application of intelligent power supply, the 12V storage battery is effectively maintained, and the service life of the storage battery is prolonged.
The invention is realized by adopting the following technical scheme: an intelligent power supplementing method for an automobile starting power supply comprises the following steps: (1) detection and judgment condition of 12V storage battery voltage
The intelligent power supply function is a 'selection' starting function, and the setting operation is completed through the HU screen;
the intelligent power-supplementing function switch is operated to select the function to be in an ON state, the intelligent power-supplementing function is activated successfully at the moment, and the function is kept in the ON state until the intelligent power-supplementing function is operated to be OFF next time;
then, the HU screen sends the state information to a T-BOX system, and the T-BOX system needs to wait for receiving a timing starting condition instruction sent by a BCM controller; at this time, the BCM system needs to judge whether the following conditions are satisfied:
a. central control lock
b. Power OFF
c. Central locking state of four-door and back door
After the above conditions are met, the T-BOX system starts to time; when the T-BOX system times to be full of X hours, the T-BOX system judges the voltage of the 12V storage battery;
if the voltage of the 12V storage battery is larger than the calibrated voltage value at the moment, the intelligent current compensation process is finished; if the voltage of the storage battery is less than or equal to the calibrated voltage value, the T-BOX system awakens the CAN network of the whole vehicle, and simultaneously sends a charging start request to the VCU controller;
at the moment, the VCU controller judges whether the state of the whole vehicle meets the intelligent power supply condition:
a. SOC value (referring to the residual capacity of the battery pack) of the power battery pack is larger than a set value
b. The whole vehicle is not in a charging state
If the state of the whole vehicle does not meet the intelligent power supply condition, the intelligent power supply process is ended; if the state of the whole vehicle can meet the intelligent power supply condition, the VCU controller sends out a high-voltage power-on request, and meanwhile, a DCDC enabling signal is switched on;
(2) DCDC power supply process for 12V storage battery
If the VCU controller detects that the high-voltage power-on fails or the DCDC enables the failure, for example, the related equipment fails, the intelligent power supply fails, and the power supply process is finished to prevent larger damage to the vehicle; if the VCU controller detects that the high-voltage electrification is successful and the DCDC is enabled successfully, the VCU controller sends a high-voltage electrification success signal; then keeping the driving DCDC power supply relay in a connection state, and intelligently supplementing power and formally starting;
after the intelligent power supply is started, timing is started by the T-BOX system, the single power supply time is set according to requirements, after the time is up, the T-BOX system sends an intelligent power supply stop request to the VCU controller, the VCU controller executes high-voltage power-down control, and the intelligent power supply is finished;
(3) reminding and re-timing after intelligent power supply completion
After the intelligent power supply is completed, the whole vehicle intelligent power supply is pushed by the mobile phone APP through the T-BOX system to finish reminding. Prompting the user that the charging is finished;
meanwhile, the whole vehicle enters a sleep state again according to a network sleep strategy (the network sleep refers to an electricity-saving and energy-saving strategy of each part of the whole vehicle in the aspect of software control, and aims to reduce the energy consumption of electric devices to the minimum to realize the concept of energy saving when the system does not work, and the strategy is a more popular function in the industry); after the whole vehicle enters a complete dormancy state, the T-BOX system starts to count again, and after the condition of first power supply timing is finished, the voltage of the 12V storage battery is judged once every Y hour; and if the voltage is higher than the calibrated voltage value, the whole vehicle network immediately enters the dormant state again.
The X, Y and the single power supply time are both parameters set manually, and are set or adjusted according to actual conditions.
Further, in the step (2), for example, in the intelligent power supplementing process, the VCU controller receives a vehicle body state change condition sent by the BCM controller, such as:
a. central control defense
b. Free door open
c. Whole vehicle power-on/operation starting switch
d. Quick charge insertion
e. Insertion of slow charging gun
The intelligent power supply is immediately finished;
the method can ensure the safety of the charging process.
Further, the method also comprises a step (4) of intelligently supplementing power and remotely closing a control strategy;
during the intelligent power supply, the VCU controller receives a remote control instruction from a T-BOX system background, then the remote control mode is directly switched to, and then the starting and the closing of the intelligent power supply are controlled through the mobile phone APP, so that the operation of a user is facilitated.
Compared with the prior art beneficial effect that has:
(1) the demand of the static days of the whole vehicle on the capacity of the storage battery is reduced, the capacity of the storage battery can be reduced, and the positive effect on the cost and the weight target of the whole vehicle is achieved.
(2) The voltage value is used as an intelligent power supply judgment condition, so that the development work of the storage battery sensor is reduced, and the development period and the development cost are reduced.
(3) When the static current is too large due to faults of the whole vehicle, the risk of power shortage of the 12V storage battery is reduced, and the influence of a customer on the use of the vehicle is reduced.
Drawings
FIG. 1 is a diagram of an intelligent current compensation routine according to the present invention.
Detailed Description
If the DCDC automatically completes charging of the 12V storage battery, firstly, the problem of detection and judgment of the voltage of the storage battery is solved, secondly, the problem of completing charging of the 12V storage battery after the DCDC is actively awakened, and finally, the problems of power supply interruption and whole vehicle retiming after charging is finished are solved.
The technology can also realize intelligent power supplementing operation by developing remote control, and is developed as an optional function.
(1) Detection and judgment condition of 12V storage battery voltage
The intelligent power-on function is a 'selection' opening function, and the setting operation can be completed in the HU screen (or can be remotely realized through a mobile phone).
Firstly, a driver can select the function to be in an opening state by operating the intelligent power supply function switch. At this time, the intelligent power-supplying function will be activated successfully, and the function will be kept in an ON state until the intelligent power-supplying function is turned OFF next time.
The HU then sends the state information to the T-BOX system. The T-BOX system needs to wait for the reception of a timer start condition command sent by the BCM controller. At this time, the BCM system needs to judge whether the following conditions are satisfied:
a. central control lock
b. Power OFF
c. Central locking state of four-door and back door
After the above conditions are satisfied, the T-BOX system starts timing. And when the T-BOX system times to be full of X hours, the T-BOX system judges the voltage of the storage battery.
And if the voltage of the storage battery is larger than the calibrated voltage value, the intelligent current compensation process is finished. And if the voltage of the storage battery is less than or equal to the calibrated voltage value, the T-BOX system wakes up the CAN network of the whole vehicle, and simultaneously sends a charging start request to the VCU controller.
At the moment, the VCU controller can judge whether the whole vehicle state meets the power supply condition:
a. SOC value of power battery pack is larger than set value
b. The whole vehicle is not in a charging state
And if the state of the whole vehicle does not meet the intelligent power supply condition, the intelligent power supply process is finished. If the state of the whole vehicle can meet the intelligent power supply condition, the VCU controller sends out a high-voltage power-on request, and meanwhile, the DCDC enable signal is switched on.
(2) DCDC power supply process for 12V storage battery
And if the VCU controller detects that the high-voltage power-on fails or the DCDC enables fails, the intelligent power supply fails, and the current supply process is finished. If the VCU controller detects that the high-voltage power-on is successful and the DCDC is enabled successfully, the VCU controller sends a high-voltage power-on success signal. And then the DCDC power supply relay is driven to keep the on state, and intelligent power supply is formally started.
After the intelligent power supply is started, the T-BOX system starts to time, the single power supply time can be set according to the requirement, and after the time is up, the T-BOX system sends an intelligent power supply stop request to the VCU controller. And the VCU controller executes high-voltage power-off control, and intelligent power supply is finished.
If in intelligent benefit electricity in-process, the VCU controller receives the automobile body state change condition that sends from the BCM controller, like:
a. central control defense
b. Free door open
c. Whole vehicle power-on/operation starting switch
d. Quick charge insertion
e. Insertion of slow charging gun
The intelligent power supply is immediately finished.
(3) Reminding and re-timing after intelligent power supply completion
After the intelligent power supply is completed, the whole vehicle intelligent power supply is pushed by the mobile phone APP through the T-BOX system to finish reminding. And prompting the user that the charging is finished.
Meanwhile, the whole vehicle enters the dormant state again according to the network dormant strategy. After the whole vehicle enters a complete dormancy state, the T-BOX system starts to count again, and after the condition of first power supply timing is finished, the voltage of the 12V storage battery is judged once every Y hour. And if the voltage is higher than the calibrated voltage value, the whole vehicle network immediately enters the dormant state again.
(4) Remote closing control strategy for intelligent power supply
If during intelligent power supply, the VCU controller receives a remote control instruction from a T-BOX system background, the remote control mode is directly switched to, and then the starting and the closing of the intelligent power supply can be controlled through the mobile phone APP.
The above-mentioned procedures are implemented by corresponding software, and those skilled in the art can easily write corresponding programs after reading the above-mentioned procedures.
Claims (3)
1. An intelligent power supplementing method for an automobile starting power supply is characterized by comprising the following steps: (1) detection and judgment condition of 12V storage battery voltage
The intelligent power supply function is a 'selection' starting function, and the setting operation is completed through the HU screen;
the intelligent power-supplementing function switch is operated to select the function to be in an ON state, the intelligent power-supplementing function is activated successfully at the moment, and the function is kept in the ON state until the intelligent power-supplementing function is operated to be OFF next time;
then, the HU screen sends the state information to a T-BOX system, and the T-BOX system needs to wait for receiving a timing starting condition instruction sent by a BCM controller; at this time, the BCM system needs to judge whether the following conditions are satisfied:
a. central control lock
b. Power OFF
c. Central locking state of four-door and back door
After the above conditions are met, the T-BOX system starts to time; when the T-BOX system times to be full of X hours, the T-BOX system judges the voltage of the 12V storage battery;
if the voltage of the 12V storage battery is larger than the calibrated voltage value at the moment, the intelligent current compensation process is finished; if the voltage of the storage battery is less than or equal to the calibrated voltage value, the T-BOX system awakens the CAN network of the whole vehicle, and simultaneously sends a charging start request to the VCU controller;
at the moment, the VCU controller judges whether the state of the whole vehicle meets the intelligent power supply condition:
a. SOC value of power battery pack is larger than set value
b. The whole vehicle is not in a charging state
If the state of the whole vehicle does not meet the intelligent power supply condition, the intelligent power supply process is ended; if the state of the whole vehicle can meet the intelligent power supply condition, the VCU controller sends out a high-voltage power-on request, and meanwhile, a DCDC enabling signal is switched on;
(2) DCDC power supply process for 12V storage battery
If the VCU controller detects that the high-voltage power-on fails or the DCDC enables the high-voltage power-on failures, the intelligent power supply fails, and the current supply process is finished; if the VCU controller detects that the high-voltage electrification is successful and the DCDC is enabled successfully, the VCU controller sends a high-voltage electrification success signal; then keeping the driving DCDC power supply relay in a connection state, and intelligently supplementing power and formally starting;
after the intelligent power supply is started, timing is started by the T-BOX system, the single power supply time is set according to requirements, after the time is up, the T-BOX system sends an intelligent power supply stop request to the VCU controller, the VCU controller executes high-voltage power-down control, and the intelligent power supply is finished;
(3) reminding and re-timing after intelligent power supply completion
After the intelligent power supply is completed, pushing a whole vehicle intelligent power supply completion prompt to a mobile phone APP through a T-BOX system, and prompting a user that the charging is completed;
meanwhile, the whole vehicle enters the dormant state again according to a network dormant strategy; after the whole vehicle enters a complete dormancy state, the T-BOX system starts to count again, and after the condition of first power supply timing is finished, the voltage of the 12V storage battery is judged once every Y hour; and if the voltage is higher than the calibrated voltage value, the whole vehicle network immediately enters the dormant state again.
2. The intelligent power supply method for the starting power supply of the automobile as claimed in claim 1, wherein in the step (2), as in the intelligent power supply process, the VCU controller receives a body state change condition sent by the BCM controller, such as:
a. central control defense
b. Free door open
c. Whole vehicle power-on/operation starting switch
d. Quick charge insertion
e. Insertion of slow charging gun
The intelligent power supply is immediately finished.
3. The intelligent power supplementing method for the automobile starting power supply according to claim 1 or 2, characterized by further comprising the step (4) of remotely closing a control strategy of intelligent power supplementing;
during the intelligent power supply, the VCU controller receives a remote control instruction from a T-BOX system background, then the remote control mode is directly switched to, and then the starting and the closing of the intelligent power supply are controlled through the mobile phone APP.
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Cited By (5)
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| CN113320436A (en) * | 2021-07-19 | 2021-08-31 | 江苏吉麦新能源车业有限公司 | Novel intelligent power supplementing method for electric passenger car |
| CN113619395A (en) * | 2021-09-24 | 2021-11-09 | 小氢汽车(上海)有限公司 | Intelligent power supplementing method and system for storage battery and hydrogen fuel cell automobile |
| CN114506219A (en) * | 2022-02-13 | 2022-05-17 | 岚图汽车科技有限公司 | Method, device and medium for preventing power shortage of new energy vehicle storage battery |
| CN114750643A (en) * | 2021-06-30 | 2022-07-15 | 广州汽车集团股份有限公司 | Automobile low-voltage battery charging method and system and automobile |
| CN114905971A (en) * | 2022-05-20 | 2022-08-16 | 合众新能源汽车有限公司 | Power supplementing method and device for storage battery of electric automobile and vehicle |
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| CN212654235U (en) * | 2020-05-29 | 2021-03-05 | 奇瑞商用车（安徽）有限公司 | Charging control system of low-voltage storage battery |
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| CN114750643B (en) * | 2021-06-30 | 2023-04-28 | 广州汽车集团股份有限公司 | Automobile low-voltage battery charging method and system and automobile |
| CN113320436A (en) * | 2021-07-19 | 2021-08-31 | 江苏吉麦新能源车业有限公司 | Novel intelligent power supplementing method for electric passenger car |
| CN113619395A (en) * | 2021-09-24 | 2021-11-09 | 小氢汽车(上海)有限公司 | Intelligent power supplementing method and system for storage battery and hydrogen fuel cell automobile |
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