CN113859048A - Vehicle power generation control method and system and vehicle - Google Patents
Vehicle power generation control method and system and vehicle Download PDFInfo
- Publication number
- CN113859048A CN113859048A CN202010615270.9A CN202010615270A CN113859048A CN 113859048 A CN113859048 A CN 113859048A CN 202010615270 A CN202010615270 A CN 202010615270A CN 113859048 A CN113859048 A CN 113859048A
- Authority
- CN
- China
- Prior art keywords
- power
- pulley motor
- belt pulley
- battery
- maximum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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]
-
- 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
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- 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]
- B60L58/14—Preventing excessive discharging
-
- 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]
- B60L58/15—Preventing overcharging
-
- 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 invention provides a vehicle power generation control method, which comprises the following steps: acquiring the state of charge of a power battery; acquiring the discharge power of a power battery; acquiring the set power generation power of a belt pulley motor; acquiring the maximum generating power of a belt pulley motor; acquiring the total power consumption of an electric appliance; if the state of charge of the power battery is larger than a first set value and the discharge power of the power battery is larger than a second set value, taking the minimum value of the set generating power of the belt pulley motor and the maximum generating power of the belt pulley motor as the actual generating power of the belt pulley motor; and if the state of charge of the power battery is less than or equal to a first set value, or the discharge power of the power battery is less than or equal to a second set value, determining the actual generated power of the belt pulley motor according to the total power consumption of the electrical appliance and the maximum generated power of the belt pulley motor. And the charging and discharging safety of the power battery is improved. The invention further provides a vehicle power generation control system and a vehicle.
Description
Technical Field
The invention relates to the field of vehicle control, in particular to a vehicle power generation control method, a vehicle power generation control system and a vehicle.
Background
The prior art discloses a vehicle power generation control method, which adjusts the total power consumption of electrical appliances according to the state of charge of a power battery, distributes the power consumption for each electrical appliance, and takes the maximum value of the power consumption of each electrical appliance as the actual power generation.
When the vehicle adopting the technology is in a high-temperature and low-temperature working condition, due to the fact that the charging and discharging capacity of the power battery is insufficient, the danger of over-charging or over-discharging of the battery can be generated; the allocation of the electrical power to the individual consumers as a function of priority is not taken into account, for example, the limited DCDC power leads to a low-voltage battery feed.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the art described above. To this end, a first object of the present invention is to provide a vehicle power generation control method that improves the safety of charging or discharging a power battery.
A second object of the present invention is to provide a vehicle power generation control system.
A third object of the invention is to propose a vehicle.
In order to achieve the above object, an embodiment of a first aspect of the present invention provides a vehicle power generation control method, including: acquiring the state of charge of a power battery; acquiring the discharge power of a power battery; acquiring the set power generation power of a belt pulley motor; acquiring the maximum generating power of a belt pulley motor; acquiring the total power consumption of an electric appliance; if the state of charge of the power battery is larger than a first set value and the discharge power of the power battery is larger than a second set value, taking the minimum value of the set generating power of the belt pulley motor and the maximum generating power of the belt pulley motor as the actual generating power of the belt pulley motor; and if the state of charge of the power battery is smaller than or equal to the first set value, or the discharge power of the power battery is smaller than or equal to the second set value, determining the actual generated power of the belt pulley motor according to the total power consumption of the electrical appliance and the maximum generated power of the belt pulley motor.
According to the vehicle power generation control method provided by the embodiment of the invention, when the state of charge of the power battery is greater than a first set value and the discharge power of the power battery is greater than a second set value, the battery can be charged and discharged, the phenomenon of over-charge or over-discharge cannot be generated, and the charging or discharging safety of the power battery is improved; if the state of charge of the power battery is smaller than or equal to the first set value, or the discharge power of the power battery is smaller than or equal to the second set value, the charging capacity or the discharge capacity of the battery is insufficient, and the requirement of the total power consumption of the electric appliance is considered to be met.
According to some embodiments of the invention, the determining the actual generated power of the pulley motor from the total power consumed by the electrical consumer and the maximum generated power of the pulley motor comprises: comparing the total power consumption of the electrical appliance with the maximum power generation power of the belt pulley motor; and if the total power consumption of the electrical appliances is greater than the maximum power generation power of the belt pulley motor, taking the maximum power generation power of the belt pulley motor as the actual power generation power of the belt pulley motor, and limiting the power consumption of each electrical appliance according to a set rule.
According to some embodiments of the invention, if the total power consumption of the electrical consumer is less than or equal to the maximum generated power of the pulley motor, a sum of the total power consumption of the electrical consumer and the maximum charging power of the power battery is calculated, and the minimum of the sum and the maximum generated power of the pulley motor is taken as the actual generated power of the pulley motor.
According to some embodiments of the present invention, the limiting the power consumption of each of the electrical consumers according to the set rule includes: and distributing the power consumption power for each electrical appliance according to the priority of the requirement of starting the engine by the belt pulley motor, the power supply requirement of the motor controller, the defrosting and demisting requirements of the air conditioner, the requirement of the battery, the driving requirement of the driving motor, the use requirement of the air conditioner and the power protection requirement of the low-voltage storage battery.
According to some embodiments of the invention, the obtaining of the maximum generated power of the pulley motor comprises: acquiring the working condition generating power of the belt pulley motor; acquiring limited generating power; and taking the minimum value of the working condition generated power of the belt pulley motor and the limit generated power as the maximum generated power of the belt pulley motor.
According to some embodiments of the invention, the obtaining the set generated power of the pulley motor comprises: and acquiring the set power generation power of the belt pulley motor according to the vehicle speed.
In order to achieve the above object, a second aspect of the present invention provides a vehicle power generation control system, including: the first acquisition module is used for acquiring the state of charge of the power battery; the second acquisition module is used for acquiring the discharge power of the power battery; the third acquisition module is used for acquiring the set power generation power of the belt pulley motor; the fourth acquisition module is used for acquiring the maximum power generation power of the belt pulley motor; the fifth acquisition module is used for acquiring the total power consumption of the electric appliance; the first determining module is used for taking the minimum value of the set generating power of the belt pulley motor and the maximum generating power of the belt pulley motor as the actual generating power of the belt pulley motor when the state of charge of the power battery is larger than a first set value and the discharging power of the power battery is larger than a second set value; and the second determining module is used for determining the actual generating power of the belt pulley motor according to the total power consumption power of the electrical appliance and the maximum generating power of the belt pulley motor when the state of charge of the power battery is less than or equal to the first set value or the discharging power of the power battery is less than or equal to the second set value.
According to the vehicle power generation control system provided by the embodiment of the invention, the first determination module considers the charge state of the power battery and the discharge power of the power battery, when the charge and discharge capacity of the power battery is sufficient, the power battery can be charged and discharged, the over-charge or over-discharge phenomenon cannot be generated, and the charge or discharge safety of the power battery is improved; when the charging capacity or the discharging capacity of the battery is insufficient, the second determining module considers that the requirement of the total power consumption of the electrical appliance is met.
According to some embodiments of the invention, the second determining module is further configured to: comparing the total power consumption of the electrical appliance with the maximum power generation power of the belt pulley motor; and if the total power consumption of the electrical appliances is greater than the maximum power generation power of the belt pulley motor, taking the maximum power generation power of the belt pulley motor as the actual power generation power of the belt pulley motor, and limiting the power consumption of each electrical appliance according to a set rule.
According to some embodiments of the invention, the second determination module is further configured to calculate a sum of the total power consumption of the electrical consumer and the maximum charging power of the power battery when the total power consumption of the electrical consumer is less than or equal to the maximum power generation power of the pulley motor, and take a minimum of the sum and the maximum power generation power of the pulley motor as the actual power generation power of the pulley motor.
In order to achieve the above object, an embodiment of a third aspect of the invention proposes a vehicle including the vehicle power generation control system of the second aspect of the invention.
According to the vehicle provided by the embodiment of the invention, when the charging capacity and the discharging capacity of the power battery are sufficient, the phenomenon of over-charging or over-discharging can not be generated, the charging or discharging safety of the battery is ensured, the power generation efficiency of the belt pulley motor is improved, energy conservation and consumption reduction are facilitated, when the charging capacity and the discharging capacity of the power battery are insufficient, the requirement of the total power consumption of an electric appliance is met, and the utilization rate of the power generation power of the belt pulley motor is improved, so that the charging and discharging efficiency of the vehicle is improved, the power generation efficiency of the vehicle is improved, the mechanical efficiency of the vehicle is improved, and the safety of the vehicle is improved.
Drawings
FIG. 1 is a first flowchart of a vehicle power generation control method of the present invention;
FIG. 2 is a second flowchart of a vehicle power generation control method of the present invention;
FIG. 3 is a block diagram of a second determination module of the vehicle electrical generation control system of the present invention;
FIG. 4 is a block diagram of a vehicle power generation control system of the present invention;
fig. 5 is a structural view of a vehicle of the present invention.
Reference numerals: the vehicle power generation control system 100, the vehicle 1000, the first obtaining module 10, the second obtaining module 20, the third obtaining module 30, the fourth obtaining module 40, the fifth obtaining module 50, the first determining module 60, the second determining module 70, S2, S3, S4, S5, and S6 indicate the order of the method steps, C indicates the first set value, Q indicates the second set value, Y indicates yes, and N indicates no.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to fig. 1-5 are exemplary and intended to be illustrative of the invention and should not be construed as limiting the invention.
As shown in fig. 1, a first aspect of the present invention proposes a vehicle power generation control method including the steps of: acquiring the state of charge of a power battery; acquiring the discharge power of a power battery; acquiring the set power generation power of a belt pulley motor; acquiring the maximum generating power of a belt pulley motor; acquiring the total power consumption of an electric appliance; if the state of charge of the power battery is larger than a first set value and the discharge power of the power battery is larger than a second set value, taking the minimum value of the set generating power of the belt pulley motor and the maximum generating power of the belt pulley motor as the actual generating power of the belt pulley motor; and if the state of charge of the power battery is less than or equal to a first set value, or the discharge power of the power battery is less than or equal to a second set value, determining the actual generated power of the belt pulley motor according to the total power consumption of the electrical appliance and the maximum generated power of the belt pulley motor.
It should be noted that the state of charge of the power battery and the discharge power of the battery jointly reflect the charging capability of the battery, and the discharge power of the battery also reflects the discharge capability of the power battery, and if the state of charge of the power battery is greater than the first set value and the discharge power of the power battery is greater than the second set value, it indicates that the charging capability and the discharge capability of the power battery are sufficient at the moment, and the phenomenon of overcharge or overdischarge cannot be generated, so that the charging or discharging safety of the battery is ensured. The set power generation power of the belt pulley motor is considered to reflect the power generation power of the normal work of the belt pulley, the maximum power generation power of the belt pulley motor reflects the maximum power generation capacity of the belt pulley motor, and when the charging capacity and the discharging capacity of the power battery are sufficient, the minimum value of the set power generation power of the belt pulley motor and the maximum power generation power of the belt pulley motor is taken as the actual power generation power of the belt pulley motor, so that the energy conservation and the consumption reduction are facilitated. The discharging power of the power battery is smaller than or equal to the second set value, which indicates that the discharging capacity of the power battery is insufficient, the state of charge of the power battery is smaller than or equal to the first set value, and the discharging power of the power battery is smaller than or equal to the second set value, which indicates that the charging capacity of the power battery is insufficient. When the charging capacity or the discharging capacity of the power battery is insufficient, the actual generating power of the belt pulley motor is determined according to the total power consumption of the electric appliance and the maximum generating power of the belt pulley motor, and the requirement for meeting the total power consumption of the electric appliance is considered while the maximum generating power of the belt pulley motor is considered. The power battery, namely a high-voltage battery and a high-voltage storage battery, provides driving force for a driving motor of the vehicle. The low-voltage storage battery, namely a low-voltage battery and a starting battery, provides power for starting a starting motor of a vehicle, such as a belt pulley motor and an engine. A Belt pulley motor, i.e., a BSG (Belt-drive Starter Generator) motor, which provides driving force for the vehicle. The state Of charge is SOC (State Of Charge), and the first set value and the second set value are calibrated according to experiments. The total power consumption of the electrical appliances is the sum of the power consumption of each electrical appliance. The steps of obtaining the state of charge of the power battery, obtaining the discharge power of the power battery, obtaining the set power generation power of the pulley motor, obtaining the maximum power generation power of the pulley motor and obtaining the total power consumption of the electrical appliance can be performed simultaneously or sequentially, and are not limited to this embodiment.
Specifically, determining the actual generated power of the pulley motor according to the total power consumption of the electrical appliance and the maximum generated power of the pulley motor comprises: comparing the total power consumption of the electrical appliance with the maximum power generation power of the belt pulley motor; and if the total power consumption of the electrical appliances is greater than the maximum power generation power of the belt pulley motor, taking the maximum power generation power of the belt pulley motor as the actual power generation power of the belt pulley motor, and limiting the power consumption power of each electrical appliance according to a set rule. If the total power consumption of the electrical appliances is greater than the maximum power generation power of the belt pulley motor, the total power consumption of the electrical appliances is more than the maximum power generation capacity of the belt pulley motor, the maximum power generation power of the belt pulley motor is taken as the actual power generation power of the belt pulley motor, the total power consumption power requirement of the electrical appliances is met as much as possible, the power consumption power of each electrical appliance is limited according to a set rule, the power consumption power of each electrical appliance can be limited according to the power consumption power requirement of each electrical appliance, and optimal power consumption power distribution is achieved.
Preferably, the limiting the power consumption of each electrical appliance according to the set rule comprises: and distributing the power consumption power for each electric appliance according to the priority of the requirements of starting the engine by the belt pulley motor, the requirements of the direct current converter, the defrosting and demisting requirements of the air conditioner, the temperature requirement of the power battery, the driving requirement of the motor, the use requirement of the air conditioner and the power protection requirement of the low-voltage storage battery. When the state of charge of the power battery is low or the discharge capacity is insufficient, the engine can be started through the belt pulley motor, and the vehicle can generate power after the engine is started; when the low-voltage storage battery is low in electric quantity, in order to ensure normal supply of low voltage and avoid power failure of a vehicle controller, the power requirement of a direct current converter (DCDC or DC/DC) needs to be ensured; the defrosting and demisting capabilities of the air conditioner affect the visual range of a driver and the driving safety; the battery cooling influences the discharging capacity and the charging capacity of the battery, and the charging capacity and the discharging capacity of the battery are limited due to the fact that the temperature of the power battery is too high; the motor drive affects the dynamic performance of the vehicle; the comfort of passengers is influenced by the use of the air conditioner; charging of the low-voltage battery affects the power conservation of the low-voltage battery.
Further, if the total power consumption of the electrical appliance is less than or equal to the maximum power generation power of the belt pulley motor, calculating the sum of the total power consumption of the electrical appliance and the maximum charging power of the power battery, and taking the minimum value of the sum and the maximum power generation power of the belt pulley motor as the actual power generation power of the belt pulley motor. If the total power consumption of the electrical appliance is less than or equal to the maximum power generation power of the belt pulley motor, the maximum power generation capacity of the belt pulley motor can meet the requirement of the total power consumption of the electrical appliance, the sum of the total power consumption of the electrical appliance and the maximum charging power of the power battery is provided by the belt pulley motor, and the minimum value of the sum and the maximum power generation power of the belt pulley motor is taken as the actual power generation power of the belt pulley motor, so that the energy saving and consumption reduction are facilitated.
Preferably, the obtaining of the maximum generated power of the pulley motor comprises: acquiring the working condition generating power of a belt pulley motor; acquiring limited generating power; and taking the minimum value of the working condition generated power and the limit generated power of the belt pulley motor as the maximum generated power of the belt pulley motor. The limit power generation is determined according to the limit values of the engine and the belt pulley motor, the power generation power of the belt pulley motor under different working conditions is different, for example, when the engine or the belt pulley motor is in failure, the set power generation power of the belt pulley motor cannot be used as the actual power generation power of the belt pulley motor, the limit power generation power and the working condition power generation power of the belt pulley motor need to be considered at the same time, and the minimum value of the working condition power generation power and the limit power generation power of the belt pulley motor is used as the maximum power generation power of the belt pulley motor, so that energy conservation and consumption reduction are facilitated.
Preferably, the working condition generating power of the belt pulley motor is determined according to the requirements of NVH (Noise, Vibration, Harshness, Noise, Vibration and Harshness), the actual generating power of the belt pulley motor frequently affects the NVH performance of the whole vehicle, the working condition generating power of the belt pulley motor is determined according to the requirements of the NVH, and the maximum generating power of the belt pulley motor can be set in a stable interval for switching, so that the actual generating power of the belt pulley motor can be set in the stable interval for switching.
Preferably, the acquiring of the set generated power of the pulley motor includes: and acquiring the set power generation power of the belt pulley motor according to the vehicle speed. The set power generation power of different belt pulley motors is obtained according to different vehicle speeds, and the larger the vehicle speed is, the set power generation power of the belt pulley motors meets the dynamic requirements of the vehicle.
The vehicle electric power generation control method of the invention will be described below with reference to the embodiment of fig. 2.
S1: judging whether the SOC is less than or equal to C or the discharge power of the power battery is less than or equal to Q, namely judging whether the state of charge of the power battery is less than or equal to a first set value or whether the discharge power of the power battery is less than or equal to a second set value, if so, entering S3, and if not, entering S2;
s2: the actual generating power of the BSG motor = MIN (the set generating power of the BSG motor, the maximum generating power of the BSG motor), the power consumption of the electrical appliance is not limited, namely, the minimum value of the set generating power of the belt pulley motor and the maximum generating power of the belt pulley motor is taken as the actual generating power of the belt pulley motor;
s3: judging that the total power consumption of the electrical appliance is less than or equal to the maximum power generation capacity of the BSG motor, namely judging that the total power consumption of the electrical appliance is less than or equal to the maximum power generation capacity of the belt pulley motor, if so, entering S5, and if not, entering S4;
s4: the actual generated power of the BSG motor = the maximum generated power of the BSG motor, that is, the maximum generated power of the pulley motor is taken as the actual generated power of the pulley motor, and the process proceeds to S6;
s5: the actual generating power of the BSG motor = MIN (total power consumption of the electrical appliance + the maximum charging power of the power battery, and the maximum generating power of the BSG motor), the power consumption of the electrical appliance is not limited, namely, the sum of the total power consumption of the electrical appliance and the maximum charging power of the power battery is calculated, and the minimum of the sum and the maximum generating power of the belt pulley motor is taken as the actual generating power of the belt pulley motor;
s6: and limiting the power consumption of each electrical appliance according to a set rule, wherein the total power consumption of the electrical appliances = BSG motor starting required power/n 1 + DCDC required power/n 2 + air conditioner defrosting and demisting required power/n 3+ power battery temperature required power/n 4+ power required by driving a motor/n 5 + power required by using an air conditioner/n 6+ low-voltage battery power-keeping required power/n 7, and n1, n2, n3, n4, n5, n6 and n7 are respectively a first coefficient, a second coefficient, a third coefficient, a fourth coefficient, a fifth coefficient, a sixth coefficient and a seventh coefficient which are greater than or equal to zero. According to a preferred embodiment of the invention, the electric power is distributed to each electric appliance according to the priority of the requirements of starting the engine by the belt pulley motor, the requirements of the direct current converter, the defrosting and demisting requirements of the air conditioner, the temperature requirements of the power battery, the driving requirements of the motor, the use requirements of the air conditioner and the power protection requirements of the low-voltage storage battery, namely n1 & gt n2 & gt n3 & gt n4 & gt n5 & gt n6 & gt n 7.
As shown in fig. 4, a second aspect of the present invention provides a vehicle power generation control system 100 including: the first acquisition module 10, the first acquisition module 10 is used for acquiring the state of charge of the power battery; the second obtaining module 20, the second obtaining module 20 is used for obtaining the discharge power of the power battery; the third acquisition module 30, the third acquisition module 30 is used for acquiring the set power generation power of the belt pulley motor; the fourth obtaining module 40, the fourth obtaining module 40 is used for obtaining the maximum generating power of the belt pulley motor; the fifth obtaining module 50, where the fifth obtaining module 50 is configured to obtain the total power consumption of the electrical appliance; the first determining module 60 is configured to, when the state of charge of the power battery is greater than a first set value and the discharge power of the power battery is greater than a second set value, take a minimum value of the set generated power of the pulley motor and the maximum generated power of the pulley motor as an actual generated power of the pulley motor; the second determining module 70 is configured to determine the actual generated power of the pulley motor according to the total power consumption of the electrical appliance and the maximum generated power of the pulley motor when the state of charge of the power battery is less than or equal to the first set value or when the discharge power of the power battery is less than or equal to the second set value. The first acquiring module 10 and the second acquiring module 20 may be two independent modules, or two modules integrated in a power battery manager, and the third acquiring module 30 and the fourth acquiring module 40 may be two independent modules, or two modules integrated in a BSG motor controller.
It should be noted that the state of charge of the power battery and the discharge power of the battery jointly reflect the charging capability of the battery, and the discharge power of the battery also reflects the discharge capability of the power battery, and if the state of charge of the power battery is greater than the first set value and the discharge power of the power battery is greater than the second set value, it indicates that the charging capability and the discharge capability of the power battery are sufficient at the moment, and the phenomenon of overcharge or overdischarge cannot be generated, so that the charging or discharging safety of the battery is ensured. Considering that the set power generation power of the pulley motor reflects the power generation power of the normal operation of the pulley, the maximum power generation power of the pulley motor reflects the maximum power generation capacity of the pulley motor, and when the charging capacity and the discharging capacity of the power battery are sufficient, the first determining module 60 takes the minimum value of the set power generation power of the pulley motor and the maximum power generation power of the pulley motor as the actual power generation power of the pulley motor, thereby being beneficial to energy conservation and consumption reduction. The discharging power of the power battery is smaller than or equal to the second set value, which indicates that the discharging capacity of the power battery is insufficient, the state of charge of the power battery is smaller than or equal to the first set value, and the discharging power of the power battery is smaller than or equal to the second set value, which indicates that the charging capacity of the power battery is insufficient. When the charging capacity or the discharging capacity of the power battery is insufficient, the second determining module 70 determines the actual generated power of the pulley motor according to the total power consumption of the electrical appliance and the maximum generated power of the pulley motor, and considers the requirement of meeting the total power consumption of the electrical appliance while considering the maximum generated power of the pulley motor. The power battery, namely a high-voltage battery and a high-voltage storage battery, provides driving force for a driving motor of the vehicle. The low-voltage storage battery, namely a low-voltage battery and a starting battery, provides power for starting a starting motor of a vehicle, such as a belt pulley motor and an engine. The belt pulley motor is a BSG motor, and the driving motor provides driving force for the vehicle. The state Of charge is SOC (State Of Charge), and the first set value and the second set value are calibrated according to experiments. The total power consumption of the electrical appliances is the sum of the power consumption of each electrical appliance. The first determination module 60 and the second determination module 70 may be separate modules or may be two modules integrated within the same controller (e.g., VCU, vehicle control unit).
Specifically, the second determining module 70 is further configured to: comparing the total power consumption of the electrical appliance with the maximum power generation power of the belt pulley motor; and if the total power consumption of the electrical appliances is greater than the maximum power generation power of the belt pulley motor, taking the maximum power generation power of the belt pulley motor as the actual power generation power of the belt pulley motor, and limiting the power consumption power of each electrical appliance according to a set rule. If the total power consumption of the electrical appliances is greater than the maximum power generation power of the belt pulley motor, the total power consumption of the electrical appliances is more than the maximum power generation capacity of the belt pulley motor, the maximum power generation power of the belt pulley motor is taken as the actual power generation power of the belt pulley motor, the total power consumption power requirement of the electrical appliances is met as much as possible, the power consumption power of each electrical appliance is limited according to a set rule, the power consumption power of each electrical appliance can be limited according to the power consumption power requirement of each electrical appliance, and optimal power consumption power distribution is achieved.
Preferably, as shown in fig. 3, the limiting, by the second determining module 70, the power consumption of each electrical appliance according to the setting rule includes: and distributing the power for each electrical appliance according to the priority of the requirements of starting the engine by the belt pulley motor, the requirements of the direct current converter, the defrosting and demisting requirements of the air conditioner, the requirements of the battery, the driving requirements of the motor, the use requirements of the air conditioner and the power protection requirements of the low-voltage storage battery. When the state of charge of the power battery is low or the discharge capacity is insufficient, the engine can be started through the belt pulley motor, and the vehicle can generate power after the engine is started; when the low-voltage storage battery is low in electric quantity, in order to ensure normal supply of low voltage and avoid power failure of a vehicle controller, the power requirement of a direct current converter (DCDC or DC/DC) needs to be ensured; the defrosting and demisting capabilities of the air conditioner affect the visual range of a driver and the driving safety; the battery cooling influences the discharging capacity and the charging capacity of the battery, and the charging capacity and the discharging capacity of the battery are limited due to the fact that the temperature of the battery is too high; the motor drive affects the dynamic performance of the vehicle; the comfort of passengers is influenced by the use of the air conditioner; charging of the low-voltage battery affects the power conservation of the low-voltage battery. The second determining module 70 obtains the power consumption, the power consumption demand or the power demand of each electrical appliance through the BSG motor controller, the DCDC, the air conditioner controller, the driving motor, the BMS and the LBMS, wherein the temperature demand consideration factor of the power battery includes SOC, maximum charging power, maximum discharging power and power battery temperature, and the power protection demand consideration factor of the low-voltage battery includes the electric quantity of the low-voltage battery. BMS is a power Battery Manager (Battery Manager System) and LBMS is a Low Voltage Battery Manager (Low Battery Manager System).
Further, the second determining module 70 is further configured to calculate a sum of the total power consumption of the electrical appliance and the maximum charging power of the power battery when the total power consumption of the electrical appliance is less than or equal to the maximum power generation power of the pulley motor, and take a minimum value of the sum and the maximum power generation power of the pulley motor as the actual power generation power of the pulley motor. If the total power consumption of the electrical appliance is less than or equal to the maximum power generation power of the belt pulley motor, the maximum power generation capacity of the belt pulley motor can meet the requirement of the total power consumption of the electrical appliance, the sum of the total power consumption of the electrical appliance and the maximum charging power of the power battery is provided by the belt pulley motor, and the minimum value of the sum and the maximum power generation power of the belt pulley motor is taken as the actual power generation power of the belt pulley motor, so that the energy saving and consumption reduction are facilitated.
Preferably, the fourth obtaining module 40 obtaining the maximum generated power of the pulley motor includes: acquiring the working condition generating power of a belt pulley motor; acquiring limited generating power; and taking the minimum value of the working condition generated power and the limit generated power of the belt pulley motor as the maximum generated power of the belt pulley motor. The limit power generation is determined according to the limit values of the engine and the belt pulley motor, the power generation power of the belt pulley motor under different working conditions is different, for example, when the engine or the belt pulley motor is in failure, the set power generation power of the belt pulley motor cannot be used as the actual power generation power of the belt pulley motor, the limit power generation power and the working condition power generation power of the belt pulley motor need to be considered at the same time, and the minimum value of the working condition power generation power and the limit power generation power of the belt pulley motor is used as the maximum power generation power of the belt pulley motor, so that energy conservation and consumption reduction are facilitated.
Preferably, the fourth obtaining module 40 determines the working condition generating power of the pulley motor according to a requirement of NVH (Noise, Vibration, Harshness, Noise, Vibration, and Harshness), the actual generating power of the pulley motor frequently changes and affects the NVH performance of the entire vehicle, the working condition generating power of the pulley motor is determined according to the requirement of NVH, and the maximum generating power of the pulley motor can be set in the stable region for switching, so that the actual generating power of the pulley motor can be set in the stable region for switching.
Preferably, the third obtaining module 30 obtaining the set generated power of the pulley motor comprises: and acquiring the set power generation power of the belt pulley motor according to the vehicle speed. The set power generation power of different belt pulley motors is obtained according to different vehicle speeds, and the larger the vehicle speed is, the set power generation power of the belt pulley motors meets the dynamic requirements of the vehicle.
As shown in fig. 5, a third aspect of the present invention proposes a vehicle 1000 including the vehicle power generation control system 100 of the second aspect of the present invention.
According to the vehicle 1000 of the invention, when the charging capacity and the discharging capacity of the power battery are sufficient, the vehicle power generation control system 100 does not generate the phenomenon of over-charging or over-discharging, the charging or discharging safety of the battery is ensured, the power generation efficiency of the belt pulley motor is improved, energy saving and consumption reduction are facilitated, when the charging capacity and the discharging capacity of the power battery are insufficient, the requirement of the total power consumption of electric appliances is met, and the utilization rate of the power generation power of the belt pulley motor is improved, so that the charging and discharging efficiency of the vehicle 1000 is improved, the power generation efficiency of the vehicle 1000 is improved, the mechanical efficiency of the vehicle 1000 is improved, and the safety of the vehicle 1000 is improved.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A vehicle power generation control method characterized by comprising the steps of:
acquiring the state of charge of a power battery;
acquiring the discharge power of a power battery;
acquiring the set power generation power of a belt pulley motor;
acquiring the maximum generating power of a belt pulley motor;
acquiring the total power consumption of an electric appliance;
if the state of charge of the power battery is larger than a first set value and the discharge power of the power battery is larger than a second set value, taking the minimum value of the set generating power of the belt pulley motor and the maximum generating power of the belt pulley motor as the actual generating power of the belt pulley motor;
and if the state of charge of the power battery is smaller than or equal to the first set value, or the discharge power of the power battery is smaller than or equal to the second set value, determining the actual generated power of the belt pulley motor according to the total power consumption of the electrical appliance and the maximum generated power of the belt pulley motor.
2. The vehicle power generation control method of claim 1, wherein the determining the actual generated power of the pulley motor from the total power consumption of the electrical consumer and the maximum generated power of the pulley motor comprises:
comparing the total power consumption of the electrical appliance with the maximum power generation power of the belt pulley motor;
and if the total power consumption of the electrical appliances is greater than the maximum power generation power of the belt pulley motor, taking the maximum power generation power of the belt pulley motor as the actual power generation power of the belt pulley motor, and limiting the power consumption of each electrical appliance according to a set rule.
3. The vehicle power generation control method according to claim 2, wherein if the total power consumption of the electrical consumer is less than or equal to the maximum power generation power of the pulley motor, a sum of the total power consumption of the electrical consumer and the maximum charging power of the power battery is calculated, and a minimum value of both the sum and the maximum power generation power of the pulley motor is taken as the actual power generation power of the pulley motor.
4. The vehicle power generation control method according to claim 2, wherein the limiting of the power consumption of each of the electrical consumers according to the set rule includes:
and distributing the power consumption power for each electrical appliance according to the priority of the requirements of starting the engine by the belt pulley motor, the requirements of the direct current converter, the defrosting and demisting requirements of the air conditioner, the requirements of the battery, the driving requirements of the driving motor, the use requirements of the air conditioner and the power protection requirements of the low-voltage storage battery.
5. The vehicle power generation control method according to claim 1, wherein the acquiring of the maximum generated power of the pulley motor includes:
acquiring the working condition generating power of the belt pulley motor;
acquiring limited generating power;
and taking the minimum value of the working condition generated power of the belt pulley motor and the limit generated power as the maximum generated power of the belt pulley motor.
6. The vehicle power generation control method according to claim 1, wherein the acquiring the set generated power of the pulley motor includes: and acquiring the set power generation power of the belt pulley motor according to the vehicle speed.
7. A vehicle power generation control system characterized by comprising:
the first acquisition module is used for acquiring the state of charge of the power battery;
the second acquisition module is used for acquiring the discharge power of the power battery;
the third acquisition module is used for acquiring the set power generation power of the belt pulley motor;
the fourth acquisition module is used for acquiring the maximum power generation power of the belt pulley motor;
the fifth acquisition module is used for acquiring the total power consumption of the electric appliance;
the first determining module is used for taking the minimum value of the set generating power of the belt pulley motor and the maximum generating power of the belt pulley motor as the actual generating power of the belt pulley motor when the state of charge of the power battery is larger than a first set value and the discharging power of the power battery is larger than a second set value; and the second determining module is used for determining the actual generating power of the belt pulley motor according to the total power consumption power of the electrical appliance and the maximum generating power of the belt pulley motor when the state of charge of the power battery is less than or equal to the first set value or the discharging power of the power battery is less than or equal to the second set value.
8. The vehicle electrical generation control system of claim 7, wherein the second determination module is further configured to: comparing the total power consumption of the electrical appliance with the maximum power generation power of the belt pulley motor; and if the total power consumption of the electrical appliances is greater than the maximum power generation power of the belt pulley motor, taking the maximum power generation power of the belt pulley motor as the actual power generation power of the belt pulley motor, and limiting the power consumption of each electrical appliance according to a set rule.
9. The vehicle power generation control system according to claim 8, wherein the second determination module is further configured to calculate a sum of the total power consumption of the electrical consumer and the maximum charging power of the power battery when the total power consumption of the electrical consumer is less than or equal to the maximum power generation power of the pulley motor, and take a minimum value of both the sum and the maximum power generation power of the pulley motor as the actual power generation power of the pulley motor.
10. A vehicle characterized by comprising the vehicle electric power generation control system according to any one of claims 7 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010615270.9A CN113859048B (en) | 2020-06-30 | 2020-06-30 | Vehicle power generation control method, control system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010615270.9A CN113859048B (en) | 2020-06-30 | 2020-06-30 | Vehicle power generation control method, control system and vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113859048A true CN113859048A (en) | 2021-12-31 |
| CN113859048B CN113859048B (en) | 2023-06-13 |
Family
ID=78981353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010615270.9A Active CN113859048B (en) | 2020-06-30 | 2020-06-30 | Vehicle power generation control method, control system and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113859048B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103192717A (en) * | 2013-04-09 | 2013-07-10 | 郑州宇通客车股份有限公司 | Low-voltage power supply system of hybrid power automobile and control method thereof |
| CN104648158A (en) * | 2013-11-21 | 2015-05-27 | 上海汽车集团股份有限公司 | High-voltage load management control system of hybrid electrical vehicle and control method thereof |
| CN106314194A (en) * | 2015-06-26 | 2017-01-11 | 上海汽车集团股份有限公司 | Electric automobile power system output torque control method and device |
| CN108656929A (en) * | 2017-03-31 | 2018-10-16 | 比亚迪股份有限公司 | The dynamical system and electricity-generating control method and hybrid vehicle of hybrid vehicle |
| CN108656919A (en) * | 2017-03-31 | 2018-10-16 | 比亚迪股份有限公司 | Hybrid vehicle and its dynamical system and electricity-generating control method |
| US20200180440A1 (en) * | 2018-12-10 | 2020-06-11 | Subaru Corporation | Power supply device for vehicle |
| CN111301182A (en) * | 2018-12-12 | 2020-06-19 | 上海汽车集团股份有限公司 | Charging control method and device and electronic equipment |
-
2020
- 2020-06-30 CN CN202010615270.9A patent/CN113859048B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103192717A (en) * | 2013-04-09 | 2013-07-10 | 郑州宇通客车股份有限公司 | Low-voltage power supply system of hybrid power automobile and control method thereof |
| CN104648158A (en) * | 2013-11-21 | 2015-05-27 | 上海汽车集团股份有限公司 | High-voltage load management control system of hybrid electrical vehicle and control method thereof |
| CN106314194A (en) * | 2015-06-26 | 2017-01-11 | 上海汽车集团股份有限公司 | Electric automobile power system output torque control method and device |
| CN108656929A (en) * | 2017-03-31 | 2018-10-16 | 比亚迪股份有限公司 | The dynamical system and electricity-generating control method and hybrid vehicle of hybrid vehicle |
| CN108656919A (en) * | 2017-03-31 | 2018-10-16 | 比亚迪股份有限公司 | Hybrid vehicle and its dynamical system and electricity-generating control method |
| US20200180440A1 (en) * | 2018-12-10 | 2020-06-11 | Subaru Corporation | Power supply device for vehicle |
| CN111301182A (en) * | 2018-12-12 | 2020-06-19 | 上海汽车集团股份有限公司 | Charging control method and device and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113859048B (en) | 2023-06-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8655524B2 (en) | Power supply system, vehicle provided with the same and control method of power supply system | |
| US7755329B2 (en) | Battery charging time optimization system based on battery temperature, cooling system power demand, and availability of surplus external power | |
| CN105936248B (en) | Power supply system | |
| US7923866B2 (en) | Power supply system and vehicle including the same, and method of controlling the same | |
| CN109552109B (en) | Dual function battery system and method | |
| US9431688B2 (en) | Method for heating a high voltage vehicle battery | |
| US8766566B2 (en) | System for causing temperature rise in battery | |
| JP6169564B2 (en) | Method and associated system for recharging vehicle battery pairs of different nominal voltages | |
| CN106945484B (en) | Control method and system for air conditioner in electric vehicle and electric vehicle | |
| US20080215199A1 (en) | Vehicle-use dual voltage type power supply apparatus | |
| US20080007224A1 (en) | Determination of battery predictive power limits | |
| KR101420340B1 (en) | Vehicle operating system and method for controlling the same | |
| US20090289589A1 (en) | Power supply system | |
| CN109572675B (en) | Hybrid electric vehicle and power generation control method and device thereof | |
| CN102934322A (en) | Battery charging system | |
| JP2008168894A (en) | Power supply system for hybrid electric vehicle and operation method of same | |
| JP2003092805A (en) | Power supply unit for hybrid car | |
| EP3232049B1 (en) | Automobile starting control system and automobile | |
| US10804815B1 (en) | DC/AC inverter system supplied by integrated power networks to increase output power with robust auto stop control | |
| JP2009201170A (en) | Charge control system | |
| CN102386637A (en) | Battery management system and method for controlling vehicle | |
| JP2009201282A (en) | Charging system for vehicle | |
| CN106611886B (en) | Discharging method and system of hybrid electric vehicle | |
| CN108656919B (en) | Hybrid electric vehicle, power system and power generation control method thereof | |
| CN113859048B (en) | Vehicle power generation control method, control system and vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |