CN113320436A - Novel intelligent power supplementing method for electric passenger car - Google Patents
Novel intelligent power supplementing method for electric passenger car Download PDFInfo
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- CN113320436A CN113320436A CN202110813449.XA CN202110813449A CN113320436A CN 113320436 A CN113320436 A CN 113320436A CN 202110813449 A CN202110813449 A CN 202110813449A CN 113320436 A CN113320436 A CN 113320436A
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- 238000000034 method Methods 0.000 title claims abstract description 37
- 230000001502 supplementing effect Effects 0.000 title claims abstract description 30
- 238000001514 detection method Methods 0.000 claims abstract description 4
- HEZMWWAKWCSUCB-PHDIDXHHSA-N (3R,4R)-3,4-dihydroxycyclohexa-1,5-diene-1-carboxylic acid Chemical compound O[C@@H]1C=CC(C(O)=O)=C[C@H]1O HEZMWWAKWCSUCB-PHDIDXHHSA-N 0.000 claims description 13
- 239000013589 supplement Substances 0.000 claims description 8
- 230000007958 sleep Effects 0.000 claims description 6
- 230000005059 dormancy Effects 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000000446 fuel Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000002618 waking effect Effects 0.000 description 1
Images
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
- 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
- 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
- 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
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- 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
-
- 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)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a novel intelligent power supplementing method for an electric passenger car, which comprises the specific steps of BCM awakening detection, judgment of storage battery voltage and judgment of storage battery voltage state, and whether to continue dormancy or high-voltage charging is controlled through the judged voltage state.
Description
Technical Field
The invention relates to the field of novel intelligent power supply methods for electric vehicles, in particular to a novel intelligent power supply method for an electric vehicle.
Background
Because the problems of shortage of traditional petroleum energy and overproof carbon emission are increasingly severe, various places respond to national calls and actively push the development of the new energy automobile industry. For an electric passenger vehicle, compared with a traditional fuel vehicle, the electric passenger vehicle has more electric control elements, and the static power consumption in the unused process of the electric passenger vehicle is far higher than that of the traditional fuel vehicle. If the electric passenger car is not frequently used, the situation that the car cannot be started and high voltage cannot be applied due to power feeding of the 12V storage battery easily occurs, and the service life of the 12V storage battery is also influenced. In order to prevent the phenomenon of 12V storage battery feed, a safe and reliable method for automatically detecting the 12V storage battery feed by the passenger vehicle, automatically waking up the vehicle to carry out high voltage and supplementing power by using a power battery is required to be designed.
Disclosure of Invention
Aiming at the technical defects, the invention aims to provide a novel intelligent electricity supplementing method for an electric passenger car, which can monitor the power supply of a 12V storage battery at any time when the car is in an OFF gear, and supplement electricity to the 12V storage battery in real time through VCU control, so that the electric quantity of the storage battery is ensured, and the problem that the 12V storage battery cannot be started in next use due to the fact that a customer does not use the car for a long time is solved.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention provides a novel intelligent power supply method for an electric passenger car, which specifically comprises the following steps:
s1, the BCM automatically wakes up after the whole vehicle is powered off for a period of time t, but does not wake up the VCU and the BMS, the BCM detects the voltage of the storage battery through the detection circuit and judges whether to supplement the power according to the voltage of the storage battery;
s2, if the BCM detects that the voltage of the storage battery is larger than or equal to a specified value, the BCM sleeps and repeats the step S1; if the voltage of the storage battery is detected to be lower than the specified value, awakening the VCU and the BMS through the network management message, and sending an intelligent power supplementing request to the VCU;
s3, the VCU wakes up the DCDC through the hard line, after the VCU, the DCDC and the BMS are subjected to self-checking, the VCU judges whether the states of the BMS and the DCDC allow charging or not, if the charging is allowed, the VCU sends a high voltage instruction to the BMS, and the VCU controls the high voltage of the BMS; if the charging is not allowed, the VCU sends an intelligent power supplementing instruction which is not allowed;
s31, when the VCU sends an instruction that the intelligent power supply is not allowed, the VCU controls the BMS to be under high voltage and the whole vehicle is in sleep;
and S32, when the VCU sends a high voltage instruction to the BMS, the storage battery is charged with high voltage, and the VCU controls the DCDC to work and charges the storage battery.
Preferably, the case where the smart power supplement condition is not satisfied in step S3 includes that the entire vehicle is in a charging connection, the key state is valid, the door is opened, and the remote key start state.
Preferably, if a charging electric power gun, an intelligent power supply vehicle door opening or an intelligent power supply key screwing occurs in the intelligent power supply process, the VCU sends an instruction that the intelligent power supply is not allowed, and the VCU controls the BMS to supply high voltage; meanwhile, the VCU prohibits sending the intelligent power supplementing command in a driving or charging state.
Preferably, the VCU has a hard-wired wake-up function, the wake-up method is that the BCM wakes up the VCU hard-wired, and the VCU wakes up the BMS through the network.
Preferably, the time t in step S1 is selected to be 12 hours.
Preferably, the voltage prescribed value at which the secondary battery is allowed to be charged in step S2 is 80% or more of the maximum voltage value thereof.
The invention has the beneficial effects that: the method can monitor the power supply of the storage battery at any time when the vehicle is in the OFF gear, and can supplement electricity to the storage battery in real time through VCU control, so that the electric quantity of the storage battery is ensured, and the problem that the storage battery cannot be started in next use due to the fact that a customer does not use the vehicle for a long time is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic flow chart of an intelligent power supplement method for a novel electric passenger car according to an embodiment of the present invention;
fig. 2 is a flowchart of the intelligent power supply and power down process provided in the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 2, the novel intelligent power supplementing method for the electric passenger car specifically comprises the following steps:
s1, the BCM automatically wakes up after the whole vehicle is powered off for a period of time t, but does not wake up the VCU and the BMS, the BCM detects the voltage of the storage battery through the detection circuit and judges whether to supplement the power according to the voltage of the storage battery;
s2, if the BCM detects that the voltage of the storage battery is larger than or equal to a specified value, the BCM sleeps and repeats the step S1; if the voltage of the storage battery is detected to be lower than the specified value, awakening the VCU and the BMS through the network management message, and sending an intelligent power supplementing request to the VCU;
s3, the VCU wakes up the DCDC through the hard line, after the VCU, the DCDC and the BMS are subjected to self-checking, the VCU judges whether the states of the BMS and the DCDC allow charging or not, if the charging is allowed, the VCU sends a high voltage instruction to the BMS, and the VCU controls the high voltage of the BMS; if the charging is not allowed, the VCU sends an intelligent power supplementing instruction which is not allowed;
s31, when the VCU sends an instruction that the intelligent power supply is not allowed, the VCU controls the BMS to be under high voltage and the whole vehicle is in sleep;
and S32, when the VCU sends a high voltage instruction to the BMS, the storage battery is charged with high voltage, and the VCU controls the DCDC to work and charges the storage battery.
The method is independent of the charging and discharging processes, the intelligent power supply process and the charging and discharging process cannot be confused, the process jump error cannot occur, and the safety and the reliability of the whole vehicle can be ensured.
The priority of intelligent power supply is lower than that of charging and discharging processes, if a charging electric spray gun, an intelligent power supply vehicle door opening or an intelligent power supply key screwing occurs in the intelligent power supply process, the intelligent power supply process is exited first, and then the intelligent power supply process enters the corresponding process; meanwhile, the intelligent power supply process cannot be skipped to in a driving or charging state.
The VCU has a hard-line awakening function, the awakening method is that the BCM awakens the VCU hard-line, and the VCU awakens the BMS through the network.
In this embodiment, the VCU is a vehicle controller, the BCM is a vehicle body domain controller, the BMS is a battery management system, and the CDU is a power management system; the BCM detects the voltage of the 12V storage battery after the whole vehicle enters the dormancy state, judges whether the 12V storage battery needs to be charged or not, awakens the VCU and the BMS through a network management message if the 12V storage battery needs to be charged, and sends a power supplementing request to the VCU; the VCU judges whether a power supplement condition is met according to the state of the whole vehicle (including a key state, a power battery SOC state, a vehicle fault state and a CDU state); and if the conditions are met, the VCU controls the whole vehicle to enter an intelligent power supply state.
In the power supplementing process, the VCU requires to close a main positive relay and a main negative relay of the power battery, when the states of the relays and the BMS are confirmed to be correct, the VCU sends an enabling command to the DCDC module (enabling is an 'allowing' signal, feeding enabling is a signal for allowing feeding, and when the feeding enabling signal is effective, the motor can rotate), and the power supplementing operation is carried out on the 12V storage battery. And starting timing, and stopping power supply after timing is finished. In the power supplementing process, the VCU monitors the key state, the vehicle door lock state and the charging gun state, and when the charging gun is inserted, the key state is not in an OFF gear, the vehicle door is opened, the vehicle lock is unlocked and the like, the VCU controls the vehicle to exit the intelligent power supplementing state and responds to other state requests of the vehicle.
Through the steps, the power supply of the storage battery can be monitored at any time when the vehicle is in an OFF gear, the power supply of the storage battery is supplemented to the storage battery in real time through VCU control, the electric quantity of the storage battery is guaranteed, and the problem that the storage battery cannot be started when being used next time due to the fact that a customer does not use the vehicle for a long time is avoided.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (6)
1. The novel intelligent power supplementing method for the electric passenger car is characterized by comprising the following steps:
s1, the BCM automatically wakes up after the whole vehicle is powered off for a period of time t, but does not wake up the VCU and the BMS, the BCM detects the voltage of the storage battery through the detection circuit and judges whether to supplement the power according to the voltage of the storage battery;
s2, if the BCM detects that the voltage of the storage battery is larger than or equal to a specified value, the BCM sleeps and repeats the step S1; if the voltage of the storage battery is detected to be lower than the specified value, awakening the VCU and the BMS through the network management message, and sending an intelligent power supplementing request to the VCU;
s3, the VCU wakes up the DCDC through the hard line, after the VCU, the DCDC and the BMS are subjected to self-checking, the VCU judges whether the states of the BMS and the DCDC allow charging or not, if the charging is allowed, the VCU sends a high voltage instruction to the BMS, and the VCU controls the high voltage of the BMS; if the charging is not allowed, the VCU sends an intelligent power supplementing instruction which is not allowed;
s31, when the VCU sends an instruction that the intelligent power supply is not allowed, the VCU controls the BMS to be under high voltage and the whole vehicle is in sleep;
and S32, when the VCU sends a high voltage instruction to the BMS, the storage battery is charged with high voltage, and the VCU controls the DCDC to work and charges the storage battery.
2. The intelligent power supplementing method for the novel electric passenger car as claimed in claim 1, wherein the conditions that the intelligent power supplementing condition is not met in the step S3 include that the whole car is in a charging connection state, a key state is valid, a car door is opened and a remote key starting state.
3. The intelligent power supplementing method for the novel electric passenger car as claimed in claim 1, wherein in step S3, if a power charging gun, an intelligent power supplementing door or an intelligent power supplementing key is turned on during the intelligent power supplementing process, the VCU sends an instruction that the intelligent power supplementing is not allowed, and the VCU controls the BMS to supply high voltage; meanwhile, the VCU prohibits sending the intelligent power supplementing command in a driving or charging state.
4. The intelligent power supplementing method of the novel electric passenger vehicle as claimed in claim 1, wherein the VCU has a hard-line awakening function, the awakening method is that the BCM awakens the VCU through the hard line, and the VCU awakens the BMS through the network.
5. The intelligent power supplementing method for the novel electric passenger car as claimed in claim 1, wherein the time t in the step S1 is selected to be 12 hours.
6. The intelligent power supplementing method for the novel electric passenger vehicle as claimed in claim 1, wherein the voltage specified value allowed to be charged by the storage battery in the step S2 is greater than or equal to 80% of the maximum voltage value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110813449.XA CN113320436A (en) | 2021-07-19 | 2021-07-19 | Novel intelligent power supplementing method for electric passenger car |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110813449.XA CN113320436A (en) | 2021-07-19 | 2021-07-19 | Novel intelligent power supplementing method for electric passenger car |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113619333A (en) * | 2021-09-08 | 2021-11-09 | 江苏吉麦新能源车业有限公司 | Control method for preventing tire pressure false alarm during charging of electric automobile |
| CN113619448A (en) * | 2021-09-10 | 2021-11-09 | 奇瑞商用车（安徽）有限公司 | Intelligent monitoring method for new energy automobile storage battery |
| 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 |
| CN113665381A (en) * | 2021-09-02 | 2021-11-19 | 上海申沃客车有限公司 | Parking keyless DCDC charging method for new energy bus |
| CN114179677A (en) * | 2022-01-13 | 2022-03-15 | 江苏常隆客车有限公司 | Automatic awakening power supplementing method for bus |
| CN115173515A (en) * | 2022-07-21 | 2022-10-11 | 江苏开沃汽车有限公司 | Intelligent power supplementing system and method for new energy electric vehicle storage battery |
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| CN112677766A (en) * | 2021-01-14 | 2021-04-20 | 奇瑞商用车（安徽）有限公司 | BMS-based intelligent electric vehicle power supplementing method and system |
| CN112895977A (en) * | 2021-03-28 | 2021-06-04 | 大运汽车股份有限公司 | Intelligent power supplementing method for automobile starting power supply |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113665381A (en) * | 2021-09-02 | 2021-11-19 | 上海申沃客车有限公司 | Parking keyless DCDC charging method for new energy bus |
| CN113665381B (en) * | 2021-09-02 | 2023-07-25 | 上海申沃客车有限公司 | Parking keyless DCDC charging method for new energy bus |
| CN113619333A (en) * | 2021-09-08 | 2021-11-09 | 江苏吉麦新能源车业有限公司 | Control method for preventing tire pressure false alarm during charging of electric automobile |
| CN113619333B (en) * | 2021-09-08 | 2023-07-21 | 江苏吉麦新能源车业有限公司 | Control method for preventing tire pressure false alarm during electric automobile charging |
| CN113619448A (en) * | 2021-09-10 | 2021-11-09 | 奇瑞商用车（安徽）有限公司 | Intelligent monitoring method for new energy automobile storage battery |
| 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 |
| CN114179677A (en) * | 2022-01-13 | 2022-03-15 | 江苏常隆客车有限公司 | Automatic awakening power supplementing method for bus |
| CN115173515A (en) * | 2022-07-21 | 2022-10-11 | 江苏开沃汽车有限公司 | Intelligent power supplementing system and method for new energy electric vehicle storage battery |
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Application publication date: 20210831 |