CN112776660A - Charging control method of electric automobile, vehicle control unit, system and electric automobile - Google Patents
Charging control method of electric automobile, vehicle control unit, system and electric automobile Download PDFInfo
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- CN112776660A CN112776660A CN201911071988.XA CN201911071988A CN112776660A CN 112776660 A CN112776660 A CN 112776660A CN 201911071988 A CN201911071988 A CN 201911071988A CN 112776660 A CN112776660 A CN 112776660A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- 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
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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
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/27—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by heating
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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
Abstract
The embodiment of the invention provides a charging control method of an electric automobile, a vehicle control unit, a system and the electric automobile, wherein the method comprises the following steps: when the electric automobile is detected to be in a slow charging state and a high-voltage power-on state, obtaining a first target output power according to states of a battery heating system and a high-voltage power system, and according to the charging required power of a power battery, the first required power of the battery heating system and the second required power of the high-voltage power system; and if the first target output power is greater than the maximum output power of the charger, sending prompt information to the instrument. In the embodiment of the invention, when the maximum output power of the charger is determined to be not enough to meet the total required power of the electric automobile, a user is reminded whether to close the high-voltage power system, so that the situation that the power battery is not charged but discharged is avoided, the electric automobile is further ensured to finish charging in a short time, and the normal use of the electric automobile is ensured.
Description
Technical Field
The invention relates to the technical field of electric vehicle charging, in particular to a charging control method, a vehicle control unit and a system of an electric vehicle and the electric vehicle.
Background
At present, with the popularization of electric vehicles, the rhythm of modern life is fast, and the charging pile facility is limited, and the charging time is the focus of a user when purchasing a car and is also a pain point of many users. For example, in cold winter, a user needs to charge outside, and when waiting in the vehicle, the high-voltage power system of the electric vehicle needs to be turned on, for example, an air conditioner is turned on to warm and/or a motor is kept in a driving state, and a part of electric quantity output by the charging pile flows into the high-voltage power system. At present, electric automobiles on the market do not have intelligent control systems, the requirements of power batteries and high-voltage power utilization systems cannot be identified, and charging piles are only output according to the requirements of the power batteries without considering the requirements of the high-voltage power utilization. In this case, the charger may not output according to the maximum power, the output power is not enough to meet the high-voltage power demand, and the rest power demand is provided by the power battery. The situation that the power battery is not charged but discharged exists, so that the charging time is obviously increased, and the power battery is in a discharging state even in a longer time.
Disclosure of Invention
The technical purpose to be achieved by the embodiment of the invention is to provide a charging control method, a vehicle control unit, a system and an electric vehicle of the electric vehicle, which are used for solving the problems that whether high-voltage electricity is used or not is not considered when the current electric vehicle is charged, the charging time is obviously increased when the high-voltage electricity is used, and even a power battery is in a discharging state in a longer time.
In order to solve the above technical problem, an embodiment of the present invention provides a charging control method for an electric vehicle, including:
when the electric automobile is detected to be in a slow charging state and a high-voltage power-on state, acquiring the charging required power of the power battery, the maximum output power of a charger, the current first state of a battery heating system and the current second state of a high-voltage power utilization system;
when the first state is that the battery heating system is in an open state and the second state is that the high-voltage power system is in an open state, acquiring first required power of the battery heating system and second required power of the high-voltage power system;
summing the first required power, the second required power and the charging required power to obtain a first target output power;
and if the first target output power is larger than the maximum output power, sending prompt information to the instrument.
Specifically, according to the charging control method, the prompt message is used for controlling the meter to remind the user whether to turn off the high-voltage power utilization system in a text and/or sound manner.
Specifically, after the step of obtaining the required charging power of the power battery, the maximum output power of the charger, the current first state of the battery heating system, and the current second state of the high-voltage power utilization system, the charging control method further includes:
and when the first state is that the battery heating system is in a closed state and the second state is that the high-voltage power utilization system is in a closed state, sending the charging required power to the charger.
Specifically, after the step of obtaining the required charging power of the power battery, the maximum output power of the charger, the current first state of the battery heating system, and the current second state of the high-voltage power utilization system, the charging control method further includes:
when the first state is that the battery heating system is in an opening state and the second state is that the high-voltage power utilization system is in a closing state, summing the first required power and the charging required power to obtain a second target output power;
if the second target output power is less than or equal to the maximum output power, sending the second target output power to the charger;
and if the second target output power is greater than the maximum output power, sending the maximum output power to the charger.
Specifically, after the step of obtaining the required charging power of the power battery, the maximum output power of the charger, the current first state of the battery heating system, and the current second state of the high-voltage power utilization system, the charging control method further includes:
when the first state is that the battery heating system is in a closed state and the second state is that the high-voltage power utilization system is in an open state, summing the second required power and the charging required power to obtain a third target output power;
if the third target output power is larger than the maximum output power, sending prompt information to the instrument;
and if the third target output power is less than or equal to the maximum output power, sending the third target output power to the charger.
Preferably, after the step of sending the prompt message to the meter, the charging control method further includes:
when a first signal that a user closes the high-voltage power utilization system is received within preset time or an operation signal of the user is not received within the preset time, sending a command of closing the high-voltage power utilization system to the high-voltage power utilization system, and returning to the step of acquiring the charging required power of the power battery, the maximum output power of the charger, the current first state of the battery heating system and the current second state of the high-voltage power utilization system;
and when a second signal that the user keeps the high-voltage power utilization system on is received within the preset time, sending the maximum output power to the charger.
Optionally, in the charging control method described above, the high-voltage power system includes: an air conditioning system and a motor drive system.
Another preferred embodiment of the present invention also provides a vehicle control unit, including:
the first processing module is used for acquiring the charging demand power of the power battery, the maximum output power of a charger, the current first state of the battery heating system and the current second state of the high-voltage power utilization system when the electric automobile is detected to be in a slow charging state and in a high-voltage power-on state;
the second processing module is used for acquiring first required power of the battery heating system and second required power of the high-voltage power utilization system when the first state is that the battery heating system is in an opening state and the second state is that the high-voltage power utilization system is in an opening state;
the third processing module is used for summing the first required power, the second required power and the charging required power to obtain a first target output power;
and the fourth processing module is used for sending indication information of whether to close the high-voltage power utilization system to the instrument when the first target output power is larger than the maximum output power.
Specifically, the vehicle control unit as described above further includes:
and the fifth processing module is used for sending the charging required power to the charger when the first state is that the battery heating system is in a closed state and the second state is that the high-voltage power utilization system is in a closed state.
Specifically, the vehicle control unit as described above further includes:
the sixth processing module is used for summing the first required power and the charging required power to obtain a second target output power when the first state is that the battery heating system is in an on state and the second state is that the high-voltage power utilization system is in an off state;
the seventh processing module is used for sending the second target output power to the charger if the second target output power is less than or equal to the maximum output power;
and the eighth processing module is used for sending the maximum output power to the charger if the second target output power is greater than the maximum output power.
Specifically, the vehicle control unit as described above further includes:
the ninth processing module is used for summing the second required power and the charging required power to obtain a third target output power when the first state is that the battery heating system is in a closed state and the second state is that the high-voltage power utilization system is in an open state;
the tenth processing module is used for sending prompt information to the instrument if the third target output power is larger than the maximum output power;
and the eleventh processing module is used for sending the third target output power to the charger if the third target output power is less than or equal to the maximum output power.
Preferably, the vehicle control unit as described above further includes:
the twelfth processing module is used for sending an instruction for closing the high-voltage power utilization system to the high-voltage power utilization system when receiving a first signal for closing the high-voltage power utilization system by a user within a preset time or receiving no operation signal of the user within the preset time, and returning to the step of acquiring the charging required power of the power battery, the maximum output power of the charger, the current first state of the battery heating system and the current second state of the high-voltage power utilization system;
and the thirteenth processing module is used for sending the maximum output power to the charger when receiving a second signal that the user keeps the high-voltage power utilization system on within the preset time.
Still another preferred embodiment of the present invention also provides a charge control system including: the system comprises a power battery, a battery management system, a charger, an instrument, a battery heating system, a high-voltage power utilization system and the vehicle control unit;
the vehicle control unit is in communication connection with the battery management system, the charger, the instrument, the battery heating system and the high-voltage power utilization system respectively; the power battery is respectively and electrically connected with the charger, the battery heating system and the high-voltage power utilization system.
Still another preferred embodiment of the present invention also provides an electric vehicle including: the charge control system as described above.
Compared with the prior art, the charging control method, the vehicle control unit, the system and the electric vehicle of the electric vehicle provided by the embodiment of the invention have the following beneficial effects:
in the embodiment of the invention, when the electric vehicle is charged through slow charging and the battery heating system and the high-voltage power system are in the on state, the total required power of the electric vehicle, namely the first target output power, is obtained, and when the first target output power is greater than the maximum output power of the charger, it is determined that the maximum output power of the charger at the moment is not enough to meet the total required power of the electric vehicle, namely the power battery is required to supply power for the high-voltage power system. Can send prompt message to instrument this moment for remind the user whether to close high-pressure power system, be favorable to the manual high-pressure power system of closing of user, and then avoid appearing that power battery does not charge, the condition of discharging on the contrary, and then guarantee that electric automobile accomplishes charging in short time, guarantee electric automobile's normal use.
Drawings
Fig. 1 is a schematic flow chart of a charger control method according to the present invention;
fig. 2 is a second flowchart of the charger control method according to the present invention;
fig. 3 is a third schematic flow chart of a control method of a charger according to the present invention;
FIG. 4 is a fourth flowchart illustrating a charger control method according to the present invention;
FIG. 5 is a schematic structural diagram of the vehicle control unit of the present invention;
fig. 6 is a schematic structural diagram of a charger control system according to the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments. In the following description, specific details such as specific configurations and components are provided only to help the full understanding of the embodiments of the present invention. Thus, it will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
In various embodiments of the present invention, it should be understood that the sequence numbers of the following processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
In the embodiments provided herein, it should be understood that "B corresponding to a" means that B is associated with a from which B can be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may be determined from a and/or other information.
Referring to fig. 1, a preferred embodiment of the present invention provides a charging control method for an electric vehicle, including:
step S101, when detecting that the electric automobile is in a slow charging state and a high-voltage power-on state, acquiring the charging demand power of a power battery, the maximum output power of a charger, the current first state of a battery heating system and the current second state of a high-voltage power system;
step S102, when the first state is that the battery heating system is in an opening state and the second state is that the high-voltage power system is in an opening state, acquiring first required power of the battery heating system and second required power of the high-voltage power system;
step S103, summing the first required power, the second required power and the charging required power to obtain a first target output power;
and step S104, if the first target output power is greater than the maximum output power, sending a prompt message to the instrument.
In the embodiment of the invention, when the electric vehicle is charged through slow charging and the battery heating system and the high-voltage power system are in the on state, the total required power of the electric vehicle, namely the first target output power, is obtained, and when the first target output power is greater than the maximum output power of the charger, it is determined that the maximum output power of the charger at the moment is not enough to meet the total required power of the electric vehicle, namely the power battery is required to supply power for the high-voltage power system. Can send prompt message to instrument this moment for remind the user whether to close high-pressure power system, be favorable to the manual high-pressure power system of closing of user, and then avoid appearing that power battery does not charge, the condition of discharging on the contrary, and then guarantee that electric automobile accomplishes charging in short time, guarantee electric automobile's normal use.
Specifically, according to the charging control method, the prompt message is used for controlling the meter to remind the user whether to turn off the high-voltage power utilization system in a text and/or sound manner.
In the embodiment of the invention, the prompt information is used for the control instrument to remind the user whether to turn off the high-voltage power system in a text and/or sound mode, so that the user can know that the current charging efficiency of the electric automobile is low in time, the user can turn off the high-voltage power system manually, the situation that the power battery is not charged and is discharged is avoided, the electric automobile is charged in a short time, and the normal use of the electric automobile is ensured.
Specifically, after step S101 of obtaining the required charging power of the power battery, the maximum output power of the charger, the current first state of the battery heating system, and the current second state of the high-voltage power utilization system, the charging control method further includes:
and step S105, when the first state is that the battery heating system is in a closed state and the second state is that the high-voltage power utilization system is in a closed state, sending the charging required power to the charger.
In the embodiment of the invention, when the battery heating system and the high-voltage power system are detected to be in the closed state, only the power battery of the electric automobile has a charging requirement at the moment, and the situation that the electric quantity of the power battery is consumed cannot exist, the charging required power is sent to the charger at the moment, so that the charger charges according to the charging required power, and on the basis of ensuring the charging of the power battery, the damage to the power battery caused by overlarge charging current or voltage is favorably avoided.
Referring to fig. 2, specifically, after step S101 of acquiring the required charging power of the power battery, the maximum output power of the charger, the current first state of the battery heating system, and the current second state of the high-voltage power utilization system, the charging control method further includes:
step S201, when the first state is that the battery heating system is in an opening state and the second state is that the high-voltage power utilization system is in a closing state, summing the first required power and the charging required power to obtain a second target output power;
step S202, if the second target output power is less than or equal to the maximum output power, sending the second target output power to a charger;
in step S203, if the second target output power is greater than the maximum output power, the maximum output power is sent to the charger.
In the embodiment of the invention, when the battery heating system is in an on state, which indicates that the electric vehicle is in a low-temperature charging environment, the battery heating system is present on the basis of ensuring normal charging of the power battery, and when the high-voltage power utilization system is in an off state, only the first required power of the battery heating system needs to be acquired, and the first required power and the charging required power are summed to obtain the second target output power; when the second target output power is larger than the maximum output power of the charger, the maximum output power is sent to the charger, so that the charger outputs according to the maximum output power, the charging of the power battery is ensured to the greatest extent on the basis of ensuring the normal work of the battery heating system, and the reduction of the charging time is facilitated; when the second target output power is less than or equal to that of the charger, the second target output power is sent to the charger, so that the charger outputs according to the second target output power, and damage to the power battery caused by overlarge charging current or voltage is avoided on the basis of ensuring normal work of the battery heating system and normal charging of the power battery.
Referring to fig. 3, specifically, after step S101 of acquiring the required charging power of the power battery, the maximum output power of the charger, the current first state of the battery heating system, and the current second state of the high-voltage power utilization system, the charging control method further includes:
step S301, when the first state is that the battery heating system is in a closed state and the second state is that the high-voltage power utilization system is in an open state, summing the second required power and the charging required power to obtain a third target output power;
step S302, if the third target output power is larger than the maximum output power, a prompt message is sent to the instrument;
step S303, if the third target output power is less than or equal to the maximum output power, the third target output power is sent to the charger.
In the embodiment of the invention, when the battery heating system is in the off state and the high-voltage power utilization system is in the on state, at the moment, the electric automobile is in a normal charging environment, only the second required power of the high-voltage power utilization system needs to be acquired, and summing the second required power and the charging required power to obtain a third target output power, and when the third target output power is greater than the maximum output power of the charger, if the high-voltage power system is kept in the on state, the charging power of the charger to the power battery is reduced, the power battery is slow in charging speed, even the power battery is discharged instead of being charged, at the moment, prompt information is sent to the instrument, is used for reminding a user whether to close the high-voltage power utilization system or not, is favorable for the user to manually close the high-voltage power utilization system, and then guarantee that electric automobile accomplishes charging in short time, guarantee electric automobile's normal use. When the third target output power is less than or equal to the maximum output power of the charger, the third target output power is sent to the charger, so that the charger outputs according to the third target output power, and the power battery is prevented from being damaged by overlarge charging current or voltage on the basis of ensuring the normal work of a high-voltage power system and ensuring the normal charging of the power battery. Referring to fig. 4, preferably, after the step S104 of sending the prompt message to the meter, the charging control method further includes:
step S401, when a first signal that a user closes the high-voltage power utilization system is received within a preset time or an operation signal of the user is not received within the preset time, sending an instruction for closing the high-voltage power utilization system to the high-voltage power utilization system, and returning to step S101 for acquiring the charging required power of the power battery, the maximum output power of the charger, the current first state of the battery heating system and the current second state of the high-voltage power utilization system;
step S402, when a second signal that a user keeps the high-voltage power utilization system on is received within a preset time, sending the maximum output power to a charger.
In the embodiment of the invention, after the prompt message is sent to the instrument, if a first signal that a user closes the high-voltage power system is received within the preset time, the user is determined to select to close the high-voltage power system, if an operation signal of the user is not received within the preset time, the user is considered not to know the prompt message or the user defaults to close the high-voltage power system after knowing, at the moment, an instruction for closing the high-voltage power system is sent to the high-voltage power system, the high-voltage power system is closed, the consumption of electric energy by the high-voltage power system is reduced, meanwhile, because the state of the whole vehicle is changed, a judgment error is easy to occur continuously according to the previously acquired information, and at the moment, the steps of acquiring the charging required power of the power battery, the maximum output power of a charger, the current first state of the battery, and executing subsequent steps to ensure the real-time performance of charging control.
And if a second signal that the user keeps the high-voltage power utilization system on is received within the preset time, sending the maximum output power to the charger, enabling the charger to output according to the maximum output power, ensuring the user demand, charging the power battery as much as possible and ensuring the electric quantity of the power battery.
Optionally, in the charging control method described above, the high-voltage power system includes: an air conditioning system and a motor drive system.
In the embodiment of the present invention, the high voltage electric system refers to a system in which various high voltage devices on an electric vehicle are located, including but not limited to an air conditioning system and a motor driving system. When a plurality of high-voltage power utilization systems are detected to be in an open state at the same time, on the basis of the method, the technical personnel in the field can select to close or directly close all the high-voltage power utilization systems according to a preset sequence according to actual requirements.
Referring to fig. 5, another preferred embodiment of the present invention also provides a vehicle control unit, including:
the first processing module 501 is configured to, when it is detected that the electric vehicle is in a slow charging state and in a high-voltage power-on state, obtain a charging demand power of the power battery, a maximum output power of a charger, a current first state of a battery heating system, and a current second state of a high-voltage power utilization system;
the second processing module 502 is configured to obtain a first required power of the battery heating system and a second required power of the high-voltage power system when the first state is that the battery heating system is in an on state and the second state is that the high-voltage power system is in an on state;
the third processing module 503 is configured to sum the first required power, the second required power, and the charging required power to obtain a first target output power;
the fourth processing module 504 is configured to send, to the meter, indication information indicating whether to turn off the high-voltage power utilization system when the first target output power is greater than the maximum output power.
Specifically, the vehicle control unit as described above further includes:
and the fifth processing module is used for sending the charging required power to the charger when the first state is that the battery heating system is in a closed state and the second state is that the high-voltage power utilization system is in a closed state.
Specifically, the vehicle control unit as described above further includes:
the sixth processing module is used for summing the first required power and the charging required power to obtain a second target output power when the first state is that the battery heating system is in an on state and the second state is that the high-voltage power utilization system is in an off state;
the seventh processing module is used for sending the second target output power to the charger if the second target output power is less than or equal to the maximum output power;
and the eighth processing module is used for sending the maximum output power to the charger if the second target output power is greater than the maximum output power.
Specifically, the vehicle control unit as described above further includes:
the ninth processing module is used for summing the second required power and the charging required power to obtain a third target output power when the first state is that the battery heating system is in a closed state and the second state is that the high-voltage power utilization system is in an open state;
the tenth processing module is used for sending prompt information to the instrument if the third target output power is larger than the maximum output power;
and the eleventh processing module is used for sending the third target output power to the charger if the third target output power is less than or equal to the maximum output power.
Preferably, the vehicle control unit as described above further includes:
the twelfth processing module is used for sending an instruction for closing the high-voltage power utilization system to the high-voltage power utilization system when receiving a first signal for closing the high-voltage power utilization system by a user within a preset time or receiving no operation signal of the user within the preset time, and returning to the step of acquiring the charging required power of the power battery, the maximum output power of the charger, the current first state of the battery heating system and the current second state of the high-voltage power utilization system;
and the thirteenth processing module is used for sending the maximum output power to the charger when receiving a second signal that the user keeps the high-voltage power utilization system on within the preset time.
The embodiment of the vehicle control unit is the vehicle control unit corresponding to the embodiment of the method, and all implementation means in the embodiment of the method are suitable for the embodiment of the vehicle control unit, so that the same technical effect can be achieved.
Referring to fig. 6, still another preferred embodiment of the present invention also provides a charge control system including: the system comprises a power battery 1, a battery management system 2, a charger 3, an instrument 4, a battery heating system 5, a high-voltage power utilization system 6 and the vehicle control unit 7;
the vehicle control unit 7 is in communication connection with the battery management system 2, the charger 3, the instrument 4, the battery heating system 5 and the high-voltage power utilization system 6 respectively; the power battery 1 is respectively and electrically connected with a charger 3, a battery heating system 5 and a high-voltage power utilization system 6.
In the embodiment of the invention, the vehicle control unit 7 of the charging control system is respectively in communication connection with the battery management system 2, the charger 3, the instrument 4, the battery heating system 5 and the high-voltage power utilization system 6, and the steps of the charging control method are executed, when the total required charging power is determined to be larger than the maximum output power of the charger 3 according to the vehicle state and the high-voltage power utilization system 6 is used, a prompt message is sent to the instrument 4 to remind a user whether to turn off the high-voltage power utilization system 6, so that the user can manually turn off the high-voltage power utilization system 6, the situation that the power battery 1 is not charged but discharged is avoided, the electric vehicle is further ensured to finish charging in a short time, and the normal use of the electric vehicle is ensured.
Still another preferred embodiment of the present invention also provides an electric vehicle including: the charge control system as described above.
The electric automobile provided by the invention comprises the charging control system, the total required charging power can be determined to be larger than the maximum output power of the charger according to the state of the whole automobile, and when the high-voltage power utilization system is used, the prompting information is sent to the instrument to remind a user whether to close the high-voltage power utilization system, so that the user can manually close the high-voltage power utilization system, the situation that a power battery is not charged but discharged is avoided, the electric automobile is ensured to be charged in a short time, and the normal use of the electric automobile is ensured.
Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A charging control method for an electric vehicle is characterized by comprising the following steps:
when the electric automobile is detected to be in a slow charging state and a high-voltage power-on state, acquiring the charging required power of the power battery, the maximum output power of a charger, the current first state of a battery heating system and the current second state of a high-voltage power utilization system;
when the first state is that the battery heating system is in an on state and the second state is that the high-voltage power utilization system is in an on state, acquiring first required power of the battery heating system and second required power of the high-voltage power utilization system;
summing the first required power, the second required power and the charging required power to obtain a first target output power;
and if the first target output power is larger than the maximum output power, sending prompt information to an instrument.
2. The charge control method according to claim 1, wherein the prompt message is used to control the meter to remind a user whether to turn off the high-voltage power system in a text and/or sound manner.
3. The charge control method according to claim 1, wherein after the step of obtaining the required charging power of the power battery, the maximum output power of the charger, the current first state of the battery heating system, and the current second state of the high-voltage power utilization system, the charge control method further comprises:
and when the first state is that the battery heating system is in a closed state and the second state is that the high-voltage power utilization system is in a closed state, sending the charging required power to the charger.
4. The charge control method according to claim 1, wherein after the step of obtaining the required charging power of the power battery, the maximum output power of the charger, the current first state of the battery heating system, and the current second state of the high-voltage power utilization system, the charge control method further comprises:
when the first state is that the battery heating system is in an on state and the second state is that the high-voltage power utilization system is in an off state, summing the first required power and the charging required power to obtain a second target output power;
if the second target output power is less than or equal to the maximum output power, sending the second target output power to the charger;
and if the second target output power is greater than the maximum output power, sending the maximum output power to the charger.
5. The charge control method according to claim 1, wherein after the step of obtaining the required charging power of the power battery, the maximum output power of the charger, the current first state of the battery heating system, and the current second state of the high-voltage power utilization system, the charge control method further comprises:
when the first state is that the battery heating system is in a closed state and the second state is that the high-voltage power utilization system is in an open state, summing the second required power and the charging required power to obtain a third target output power;
if the third target output power is larger than the maximum output power, sending the prompt message to an instrument;
and if the third target output power is less than or equal to the maximum output power, sending the third target output power to the charger.
6. The charging control method according to claim 1 or 5, wherein after the step of sending the prompt message to a meter, the charging control method further comprises:
when a first signal that a user closes the high-voltage power utilization system is received within a preset time or an operation signal of the user is not received within the preset time, sending an instruction for closing the high-voltage power utilization system to the high-voltage power utilization system, and returning to the step of obtaining the charging required power of the power battery, the maximum output power of the charger, the current first state of the battery heating system and the current second state of the high-voltage power utilization system;
and when a second signal that a user keeps the high-voltage power utilization system on is received within the preset time, sending the maximum output power to the charger.
7. The charge control method according to claim 1, wherein the high-voltage power system includes: an air conditioning system and a motor drive system.
8. A vehicle control unit, comprising:
the first processing module is used for acquiring the charging demand power of the power battery, the maximum output power of a charger, the current first state of the battery heating system and the current second state of the high-voltage power utilization system when the electric automobile is detected to be in a slow charging state and in a high-voltage power-on state;
the second processing module is used for acquiring first required power of the battery heating system and second required power of the high-voltage electric system when the first state is that the battery heating system is in an open state and the second state is that the high-voltage electric system is in an open state;
the third processing module is used for summing the first required power, the second required power and the charging required power to obtain a first target output power;
the fourth processing module is used for comparing the first target output power with the maximum output power;
and the fifth processing module is used for sending indication information of whether to close the high-voltage power utilization system to the instrument when the first target output power is larger than the maximum output power.
9. A charge control system, comprising: the vehicle-mounted power supply comprises a power battery, a battery management system, a charger, an instrument, a battery heating system, a high-voltage power utilization system and the vehicle control unit according to claim 8;
the vehicle control unit is in communication connection with the battery management system, the charger, the instrument, the battery heating system and the high-voltage power utilization system respectively; the power battery is respectively and electrically connected with the charger, the battery heating system and the high-voltage power utilization system.
10. An electric vehicle, comprising: the charge control system of claim 9.
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| CN201911071988.XA CN112776660A (en) | 2019-11-05 | 2019-11-05 | Charging control method of electric automobile, vehicle control unit, system and electric automobile |
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| CN201911071988.XA CN112776660A (en) | 2019-11-05 | 2019-11-05 | Charging control method of electric automobile, vehicle control unit, system and electric automobile |
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| CN114212000A (en) * | 2022-01-14 | 2022-03-22 | 重庆金康动力新能源有限公司 | Vehicle battery control method and device |
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