CN107139727B - Operation control system and operation control method of electric automobile - Google Patents
Operation control system and operation control method of electric automobile Download PDFInfo
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- CN107139727B CN107139727B CN201710389904.1A CN201710389904A CN107139727B CN 107139727 B CN107139727 B CN 107139727B CN 201710389904 A CN201710389904 A CN 201710389904A CN 107139727 B CN107139727 B CN 107139727B
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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
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
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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
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/10—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines
- B60L50/15—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines with additional electric power supply
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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- Power Engineering (AREA)
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- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The embodiment of the invention discloses an operation control system and an operation control method of an electric automobile, wherein the operation control system of the electric automobile comprises the electric automobile and a generator set externally hung on the electric automobile; the electric automobile comprises an automobile driving motor, a vehicle-mounted power battery and an information acquisition device; the generator set comprises a control unit, a communication unit and a power unit; the communication unit is connected with the information acquisition device and is used for acquiring the running state information of the electric automobile; the control unit is respectively connected with the communication unit and the power unit and used for receiving the running state information of the electric automobile and controlling the working state of the power unit according to the running state information of the electric automobile. By adopting the technical scheme, the external-hanging type generator set controls the working state of the power unit according to the running state information of the electric automobile, and when the electric quantity of the vehicle-mounted power battery is insufficient, the electric energy is provided for the electric automobile, the endurance mileage of the electric automobile is prolonged, and the endurance capacity of the electric automobile is improved.
Description
Technical Field
The embodiment of the invention relates to the technical field of electric automobiles, in particular to an operation control system and an operation control method of an electric automobile.
Background
In order to solve the problems of energy shortage and environmental pollution, green and environment-friendly energy-saving new energy automobiles become an important development direction of automobile technology, and the new energy automobiles are most commonly hybrid electric automobiles and electric automobiles. Although the hybrid electric vehicle reduces fuel consumption and environmental pollution compared with the conventional vehicle, the hybrid electric vehicle still works based on an internal combustion engine and cannot get rid of dependence on petroleum. The application of the electric automobile ensures that the automobile does not depend on an internal combustion engine consuming a large amount of fuel, and the emission problem of a fuel vehicle is solved.
However, due to the limitation of the built-in rechargeable battery, the electric vehicle can only actually run in a small range at present, the charging time of the electric vehicle is long, the speed of a public charging facility is relatively slow, and the charging becomes a real problem which is difficult to solve temporarily, so that the range of the electric vehicle is greatly limited by the amount of the battery power. In practical application, the electric automobile is difficult to run for a long distance, and the development and popularization of the electric automobile are seriously influenced.
Disclosure of Invention
In view of this, embodiments of the present invention provide an operation control system and an operation control method for an electric vehicle, so as to solve the technical problem in the prior art that an electric vehicle has poor endurance.
In a first aspect, an embodiment of the present invention provides an operation control system for an electric vehicle, including: the system comprises an electric automobile and a generator set externally hung on the electric automobile;
the electric automobile comprises an automobile driving motor, a vehicle-mounted power battery and an information acquisition device;
the generator set comprises a control unit, a communication unit and a power unit;
the communication unit is connected with the information acquisition device and is used for acquiring the running state information of the electric automobile;
the control unit is respectively connected with the communication unit and the power unit and used for receiving the running state information of the electric automobile and controlling the working state of the power unit according to the running state information of the electric automobile.
Optionally, the generator set further includes an interface unit, and the power unit is connected to the interface unit and is configured to provide electric energy to the vehicle driving motor and/or the vehicle-mounted power battery through the interface unit.
Optionally, the power unit includes an oil tank, a starter, an air inlet, an exhaust port, and a tail gas treatment device.
In a second aspect, an embodiment of the present invention further provides an operation control method for an electric vehicle, where the operation control system for an electric vehicle according to the first aspect includes:
the communication unit acquires running state information of the electric automobile;
the control unit receives the running state information of the electric automobile and controls the working state of the power unit according to the running state information of the electric automobile.
Optionally, the controlling unit controls the operating state of the power unit according to the running state information of the electric vehicle, and includes:
the control unit controls the power unit to be turned on or off according to the residual electric quantity of the vehicle-mounted power battery of the electric automobile.
Optionally, the control unit controls the power unit to be turned on or off according to the remaining capacity of the vehicle-mounted power battery of the electric vehicle, and includes:
when the control unit detects that the ratio of the residual capacity to the rated capacity of the vehicle-mounted power battery reaches a first threshold value, the control unit controls the power unit to be started, and controls the power unit to provide electric energy for the automobile driving motor to drive wheels of the electric automobile to rotate, and/or provides electric energy for the vehicle-mounted power battery to charge the vehicle-mounted power battery;
when the control unit detects that the ratio of the charging capacity to the rated capacity of the vehicle-mounted power battery reaches a second threshold value, the control unit controls the power unit to be turned off and controls the power unit to stop supplying electric energy to the automobile driving motor and/or the vehicle-mounted power battery.
Optionally, the first threshold is 20%, and the second threshold is 80%.
Optionally, the controlling unit controls the operating state of the power unit according to the running state information of the electric vehicle, and includes:
and when the power unit is started, the control unit controls the output power of the power unit according to the running state information of the electric automobile.
Optionally, when the power unit is turned on, the control unit controls the output power of the power unit according to the running state of the electric vehicle, including:
when the electric automobile is in a static state, the power unit provides electric energy for the vehicle-mounted power battery to charge the vehicle-mounted power battery, the output voltage of the power unit is greater than the voltage of the vehicle-mounted power battery, and the output current of the power unit is less than or equal to the maximum charging current of the vehicle-mounted power battery;
when the electric automobile is in a braking state, the power unit provides electric energy for the vehicle-mounted power battery to charge the vehicle-mounted power battery, and the charging current is a first charging current; the automobile driving motor converts kinetic energy into electric energy to charge the vehicle-mounted power battery, and the charging current is a second charging current; the sum of the first charging current and the second charging current is less than or equal to the maximum charging current of the vehicle-mounted power battery;
when the electric automobile is in a state other than a static state and a braking state, the control unit acquires target power of the electric automobile according to the running speed of the electric automobile, and controls the output power of the power unit according to the target power, wherein the target power represents power required by the running of the electric automobile.
Optionally, controlling the output power of the power unit according to the target power includes:
when the target power is larger than the maximum output power of the power unit, the power unit provides electric energy to the automobile driving motor at the maximum output power so as to drive wheels of the electric automobile to rotate; meanwhile, the vehicle-mounted power battery provides electric energy for the automobile driving motor to drive wheels of the electric automobile to rotate;
when the target power is equal to the maximum output power of the power unit, the power unit provides electric energy to the automobile driving motor at the maximum output power so as to drive wheels of the electric automobile to rotate;
when the target power is smaller than the maximum output power of the power unit, the power unit provides electric energy to the automobile driving motor at the target power so as to drive wheels of the electric automobile to rotate; meanwhile, the power unit provides electric energy for the vehicle-mounted power battery to charge the vehicle-mounted power battery, the output voltage of the power unit is greater than the voltage of the vehicle-mounted power battery, and the output current of the power unit is smaller than or equal to the maximum charging current of the vehicle-mounted power battery.
The operation control system comprises an electric automobile and a generator set hung on the electric automobile, the electric automobile comprises an automobile driving motor, a vehicle-mounted power battery and an information acquisition device, the generator set comprises a control unit, a communication unit and a power unit, the communication unit is connected with the information acquisition device and used for acquiring the operation state information of the electric automobile, and the control unit is respectively connected with the communication unit and the power unit and used for receiving the operation state information of the electric automobile and controlling the working state of the power unit according to the operation state information of the electric automobile. The external generator set controls the working state of the power unit according to the running state information of the electric automobile, and when the electric quantity of the vehicle-mounted power battery is insufficient or the vehicle-mounted power battery breaks down, the electric energy is provided for the electric automobile through the external generator set, so that the endurance mileage of the electric automobile can be prolonged, the endurance capacity of the electric automobile is improved, and the technical problem of poor endurance capacity of the electric automobile in the prior art is solved; and the external generator set is used for providing electric energy for the power automobile, the operation control strategy of the electric automobile is not changed, the electric energy is provided for the electric automobile only through the generator set, and the endurance method is simple and efficient.
Drawings
In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, a brief description is given below of the drawings used in describing the embodiments. It should be clear that the described figures are only views of some of the embodiments of the invention to be described, not all, and that for a person skilled in the art, other figures can be derived from these figures without inventive effort.
Fig. 1 is a schematic structural diagram of an operation control system of an electric vehicle according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of another operation control system of an electric vehicle according to an embodiment of the present invention;
fig. 3 is a schematic flow chart of an operation control method of an electric vehicle according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be fully described by the detailed description with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, not all embodiments, and all other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without inventive efforts fall within the scope of the present invention.
Fig. 1 is a schematic structural diagram of an operation control system of an electric vehicle according to an embodiment of the present invention, and as shown in fig. 1, the operation control system of an electric vehicle according to an embodiment of the present invention may include:
the system comprises an electric automobile 1 and a generator set 2 externally hung on the electric automobile 1;
the electric automobile 1 can comprise an automobile driving motor 11, an on-board power battery 12 and an information acquisition device 13;
the generator set 2 may comprise a control unit 21, a communication unit 22 and a power unit 23;
the communication unit 22 is connected with the information acquisition device 13 and is used for acquiring the running state information of the electric automobile 1;
the control unit 21 is connected to the communication unit 22 and the power unit 23, respectively, and is configured to receive the operation state information of the electric vehicle 1 and control the operation state of the power unit according to the operation state information of the electric vehicle 1.
For example, the operation control system of the electric vehicle provided in the embodiment of the present invention may include an electric vehicle 1 and a generator set 2 externally hung on the electric vehicle 1, and optionally, the generator set 2 is not an inherent component of the electric vehicle 1, when the electric vehicle 1 is a large vehicle or a pick-up truck, the generator set 2 may be placed in a compartment of the large vehicle or the pick-up truck, and when the electric vehicle 1 is a medium-small vehicle, the generator set 2 may be dragged behind the electric vehicle 1, and the embodiment of the present invention does not limit a relative positional relationship between the generator set 2 and the electric vehicle 1. Optionally, the generator set 2 is an external device, and is not required to be carried along with a vehicle in a short distance at ordinary times, and the weight of the vehicle is not increased. When the electric automobile is purchased, the equipment is not required to be purchased, the cost is not increased, and the electric automobile can be leased when in use or has a set of generator set together with other people.
Optionally, the electric vehicle 1 may include a vehicle driving motor 11, a vehicle-mounted power battery 12, and an information acquisition device 13. Optionally, the vehicle-mounted power battery 12 may be connected to the vehicle driving motor 11, and the vehicle-mounted power battery 12 outputs the stored electric energy to the vehicle driving motor 11, so that the vehicle driving motor 11 converts the electric energy into kinetic energy to drive wheels of the electric vehicle 1 to rotate; and when the electric automobile 1 is in a braking state, the automobile driving motor 11 can also convert the kinetic energy of the wheels into electric energy to charge the vehicle-mounted power battery 12. The information acquisition device 13 may be connected to the vehicle driving motor 11 and the vehicle-mounted power battery 12, respectively, and is configured to acquire running state information of the electric vehicle 1, where the running state information may include running speed information, running acceleration information, and the like of the electric vehicle 1; current driving state information of the electric vehicle 1, such as a stationary state, a braking state, or the like, may also be included; and may also include the charge information of the vehicle-mounted power battery 12, etc. Alternatively, the vehicle-mounted power battery 12 may be a storage battery, such as a lithium battery or other storage batteries, and the specific type of the vehicle-mounted power battery 12 is not limited in the embodiment of the present invention.
Optionally, the generator set 2 may include a control unit 21, a communication unit 22 and a power unit 23, and the communication unit 22 may be connected to the information acquisition device 13 of the electric vehicle 1, for example, may be connected through a communication CAN bus; while the control unit 21 may be connected with the communication unit 22 and the power unit 23, respectively. Alternatively, the power unit 23 may include a fuel tank, a starter, an air inlet, an exhaust port, an exhaust gas treatment device, and the like. The communication unit 22 can acquire the running state information of the electric vehicle 1 by being connected to the information acquisition device 13. The control unit 21 is connected to the communication unit 22 and the power unit 23, respectively, receives the operation state information acquired by the communication unit 22, and controls the operation state of the power unit 23 according to the operation state information. Alternatively, the operating state of the power unit 23 may include an on state and an off state; when the power unit 23 is in the on state, the operating state of the power unit 23 may further include operating states such as output power, rotation speed, and the like, that is, the control unit 21 controls the operating state of the power unit 23, for example, controls the power unit 23 to be on, outputs electric energy to the electric vehicle 1 through the power unit 23, supplies power to the wheels of the electric vehicle 1, and/or charges the vehicle-mounted power battery 12 according to the running state information of the electric vehicle 1, such as the electric quantity information of the vehicle-mounted power battery 12, acquired by the communication unit 22. It should be noted that the generator set 2 is only connected with the information acquisition device 13 of the electric vehicle 1 through the communication unit 22 to obtain the operation state of the electric vehicle 1, the control unit 21 is respectively connected with the communication unit 22 and the power unit 23 to receive the operation state information obtained by the communication unit 22, and controls the working state of the power unit 23 according to the operation state information, the generator set 2 does not change the operation strategy of the electric vehicle 1, and only provides electric energy to the electric vehicle 1 according to the operation state information of the electric vehicle 1, so that the electric vehicle 1 continues to operate, and the operation method is simple and efficient.
To sum up, the embodiment of the present invention provides an operation control system for an electric vehicle, including an electric vehicle and a generator set externally attached to the electric vehicle, where the electric vehicle includes a vehicle driving motor, a vehicle-mounted power battery, and an information acquisition device, the generator set includes a control unit, a communication unit, and a power unit, the communication unit is connected to the information acquisition device and is used to acquire operation state information of the electric vehicle, and the control unit is respectively connected to the communication unit and the power unit and is used to receive the operation state information of the electric vehicle and control a working state of the power unit according to the operation state information of the electric vehicle. The external-mounted generator set controls the power unit to be opened or closed according to the running state information of the electric automobile, simultaneously controls the output power or the rotating speed of the power unit, and provides electric energy for the electric automobile through the external-mounted generator set when the electric quantity of the vehicle-mounted power battery is insufficient or the vehicle-mounted power battery fails, so that the cruising mileage of the electric automobile can be prolonged, the cruising ability of the electric automobile is improved, and the technical problem that the cruising ability of the electric automobile is poor in the prior art is solved; and the external generator set is used for providing electric energy for the power automobile, the operation control strategy of the electric automobile is not changed, the electric energy is provided for the electric automobile only through the generator set, and the endurance method is simple and efficient.
Optionally, fig. 2 is another operation control system of an electric vehicle according to an embodiment of the present invention, and the operation control system of the electric vehicle shown in fig. 2 is optimized based on the operation control system of the electric vehicle described in the above embodiment. Specifically, the operation control system of the electric vehicle shown in fig. 2 is added with an interface unit on the basis of the operation control system of the electric vehicle shown in fig. 1. As shown in fig. 2, an operation control system of an electric vehicle according to an embodiment of the present invention may include:
the system comprises an electric automobile 1 and a generator set 2 externally hung on the electric automobile 1;
the electric automobile 1 can comprise an automobile driving motor 11, an on-board power battery 12 and an information acquisition device 13;
the generator set 2 may comprise a control unit 21, a communication unit 22, a power unit 23 and an interface unit 24;
the communication unit 22 is connected with the information acquisition device 13 and is used for acquiring the running state information of the electric automobile 1;
the control unit 21 is respectively connected with the communication unit 22 and the power unit 23, and is used for receiving the running state information of the electric vehicle 1 and controlling the working state of the power unit 23 according to the running state information of the electric vehicle 1;
the power unit 23 is connected to the interface unit 24 for supplying electrical energy to the vehicle drive motor 11 and/or the vehicle-mounted power battery 12 via the interface unit.
As shown in fig. 2, the operation control system of the electric vehicle 1 shown in fig. 2 is added with an interface unit 24 on the basis of the operation control system of the electric vehicle 1 shown in fig. 1, and the interface unit 24 is connected with the power unit 23 and is used for transmitting the electric energy output by the power unit 23 to the vehicle driving motor 11 and/or the vehicle-mounted power battery 12. Optionally, the interface unit 24 may be directly connected to a fast charging interface of the electric vehicle 1, and is configured to perform fast charging on the vehicle-mounted power battery 12, so as to ensure that the electric vehicle 1 achieves the purpose of fast charging on the vehicle-mounted power battery 12 through the interface unit 24 of the generator set 2 under the condition that the existing structure is not changed.
Optionally, fig. 3 is a schematic flow chart of an operation control method of an electric vehicle according to an embodiment of the present invention, where the operation control method of the electric vehicle according to the embodiment of the present invention is based on the operation control system of the electric vehicle described in the above embodiment, and the operation control system of the electric vehicle includes an electric vehicle 1 and a generator set 2 externally hung on the electric vehicle 1; the electric automobile 1 can comprise an automobile driving motor 11, an on-board power battery 12 and an information acquisition device 13; the generator set 2 may comprise a control unit 21, a communication unit 22 and a power unit 23; the communication unit 22 is connected with the information acquisition device 13; the control unit 21 is connected with the communication unit 22 and the power unit 23, respectively. As shown in fig. 3, an operation control method for an electric vehicle according to an embodiment of the present invention may include:
and S110, the communication unit acquires the running state information of the electric automobile.
For example, the running state information may include running speed information, running acceleration information, and the like of the electric vehicle 1; the running state information of the electric vehicle 1, such as a stationary state or a braking state; and may also include the charge information of the vehicle-mounted power battery 12, etc.
And S120, the control unit receives the running state information of the electric automobile and controls the working state of the power unit according to the running state information of the electric automobile.
Optionally, the controlling unit controls the operating state of the power unit according to the running state information of the electric vehicle, and may include:
the control unit controls the power unit to be turned on or off according to the residual electric quantity of the vehicle-mounted power battery of the electric automobile.
For example, the operation state information of the electric vehicle 1 may include remaining capacity information of the on-vehicle power battery 12, the control unit 21 controls the power unit 23 to be turned on and off according to the operation state information of the electric vehicle 1, and the control unit 21 may control the power unit 23 to be turned on and off according to the remaining capacity information of the on-vehicle power battery 12 of the electric vehicle 1, specifically:
when the control unit 21 detects that the ratio between the residual capacity and the rated capacity of the vehicle-mounted power battery 12 reaches the first threshold value, the control unit 21 controls the power unit 23 to be started, and controls the power unit 23 to supply electric energy to the vehicle driving motor 11 to drive wheels of the electric vehicle 1 to rotate, and/or supplies electric energy to the vehicle-mounted power battery 12 to charge the vehicle-mounted power battery 12;
when the control unit 21 detects that the ratio between the charged capacity and the rated capacity of the vehicle-mounted power battery 12 reaches a second threshold value, the control unit controls the power unit to be turned off, and controls the power unit to stop supplying electric energy to the vehicle driving motor and the vehicle-mounted power battery.
Illustratively, the control unit 21 is connected to the communication unit 22 to obtain operation control information of the electric vehicle 1, where the operation control information may include electric quantity information of the on-vehicle power battery 12, and when the control unit 21 detects that a ratio between a remaining electric quantity of the on-vehicle power battery 12 and a rated capacity reaches a first threshold value, for example, the first threshold value may be 20%, which indicates that the on-vehicle power battery is in a low-electric-quantity state, and the on-vehicle power battery 12 may not be able to continue to provide a large endurance mileage for the electric vehicle 1, at this time, the control unit 21 controls the power unit 23 to automatically turn on, and supplies electric energy to the vehicle driving motor 11 through the power unit 23 to drive wheels of the electric vehicle 1 to normally rotate, so as to ensure that the electric vehicle 1 normally runs; and/or, the power unit 23 is controlled to provide electric energy to the vehicle-mounted power battery 12 to charge the vehicle-mounted power battery 12. During the charging process of the vehicle-mounted power battery 12, when the control unit 21 detects that the ratio between the charging capacity of the vehicle-mounted power battery 12 and the rated capacity reaches a second threshold value, for example, the second threshold value is 80%, which indicates that the vehicle-mounted power battery 12 has stored more electric energy, and can continue to provide a larger driving range for the electric vehicle 1, at this time, the control unit 21 controls the power unit 23 to automatically turn off, and controls the power unit 23 to stop supplying power to the vehicle driving motor 11 and the vehicle-mounted power battery 12. It should be noted that, in the embodiment of the present invention, the first threshold is set to be 20% and the second threshold is set to be 80%, which are only examples of possible values of the first threshold and the second threshold, and the first threshold and the second threshold may also be other values, for example, 25% and 75%, respectively.
Optionally, the controlling unit controls the operating state of the power unit according to the running state information of the electric vehicle, and may include:
and when the power unit is started, the control unit controls the output power of the power unit according to the running state information of the electric automobile.
For example, the running state information of the electric vehicle 1 may include the current running state information of the electric vehicle 1, and may be, for example, a stationary state, that is, the electric vehicle 1 is in a state with a speed of 0 at this time; or the braking state may be a braking state, that is, the electric vehicle 1 is in a state of stepping on the brake and decelerating. The method specifically comprises the following steps:
when the electric automobile 1 is in a static state, the power unit 23 provides electric energy to the vehicle-mounted power battery 12 to charge the vehicle-mounted power battery 12, the output voltage of the power unit 23 is greater than the voltage of the vehicle-mounted power battery 12, and the output current of the power unit 23 is less than or equal to the maximum charging current of the vehicle-mounted power battery 12;
when the electric automobile 1 is in a braking state, the power unit 23 provides electric energy to the vehicle-mounted power battery 12 to charge the vehicle-mounted power battery 12, and the charging current is a first charging current; the automobile driving motor 11 converts the kinetic energy into electric energy to charge the vehicle-mounted power battery 12, and the charging current is a second charging current; the sum of the first charging current and the second charging current is less than or equal to the maximum charging current of the vehicle-mounted power battery 12;
when the electric vehicle 1 is in a state other than the stationary state and the braking state, the control unit 21 obtains a target power of the electric vehicle 1 according to the operating speed of the electric vehicle 1, and controls the output power of the power unit 23 according to the target power, wherein the target power represents the power for operating the electric vehicle 1.
For example, when the electric vehicle 1 is in a stationary state, and the wheels of the electric vehicle 1 are not rotating, the power unit 23 does not need to provide electric power to the vehicle driving motor 11, and the power unit 23 only needs to provide electric power to the vehicle-mounted power battery 12 to charge the vehicle-mounted power battery 12. Optionally, in the process that the power unit 23 charges the vehicle-mounted power battery 12, it is required to ensure that the output voltage of the power unit 23 is greater than the voltage of the vehicle-mounted power battery 12, and it is ensured that current can flow from the power unit 23 to the vehicle-mounted power battery; meanwhile, it is also required to ensure that the output current of the power unit 23 is less than or equal to the maximum charging current of the vehicle-mounted power battery 12, so as to avoid damage to the vehicle-mounted power battery 12 due to excessive charging current.
When the electric vehicle 1 is in a braking state, the electric vehicle 1 can recover kinetic energy, that is, the vehicle driving motor 11 can convert part of kinetic energy of the running vehicle wheels into electric energy to charge the vehicle-mounted power battery 12. At this time, the power unit charges 23 the vehicle-mounted power battery 12, the charging current is a first charging current, the automobile driving motor 11 charges the vehicle-mounted power battery 12, the charging current is a second charging current, the sum of the first charging current and the second charging current needs to be less than or equal to the maximum charging current of the vehicle-mounted power battery 12, and damage to the vehicle-mounted power battery 12 due to overlarge charging current is avoided.
When the electric vehicle 1 is in a state other than the stationary state and the braking state, the control unit 21 needs to obtain a target power required by the electric vehicle 1 to maintain the operating speed according to the operating speed of the electric vehicle 1 and then control the output power of the power unit 23 according to the target power, wherein the target power represents the power for the electric vehicle 1 to operate. Specifically, the method comprises the following steps:
when the target power is larger than the maximum output power of the power unit 23, the power unit 23 provides electric energy to the vehicle driving motor 11 at the maximum output power so as to drive wheels of the electric vehicle 1 to rotate; meanwhile, the vehicle-mounted power battery 12 provides electric energy for the vehicle driving motor 11 to drive wheels of the electric vehicle 1 to rotate;
when the target power is equal to the maximum output power of the power unit 23, the power unit 23 provides electric energy to the vehicle driving motor 11 at the maximum output power to drive the wheels of the electric vehicle 1 to rotate;
when the target power is smaller than the maximum output power of the power unit 23, the power unit 23 provides electric energy to the automobile driving motor 11 at the target power so as to drive wheels of the electric automobile 1 to rotate; meanwhile, the power unit 23 supplies electric energy to the vehicle-mounted power battery 12 to charge the vehicle-mounted power battery 12, the output voltage of the power unit 23 is greater than the voltage of the vehicle-mounted power battery 12, and the output current of the power unit 23 is less than or equal to the maximum charging current of the vehicle-mounted power battery 12.
For example, when the running speed of the electric vehicle 1 is relatively high, the required target power is relatively high, and is greater than the maximum output power that can be provided by the power unit 23, the power unit 23 provides electric energy to the vehicle driving motor 11 at the maximum output power for driving the wheels of the electric vehicle 1 to rotate; meanwhile, if part of the electric energy is stored in the vehicle-mounted power battery 12 at this time, the vehicle-mounted power battery 12 also supplies the electric energy to the vehicle driving motor 11 for driving the wheels of the electric vehicle 1 to rotate. When the target power required for the running speed of the electric vehicle 1 exactly matches the maximum output power of the power unit 23, and only the power unit 23 can satisfy the target power of the electric vehicle 1, the power unit 23 supplies electric energy to the vehicle driving motor 11 at the maximum output power to drive the wheels of the electric vehicle 1 to rotate. When the running speed of the electric automobile 1 is low, the required target power is also low, and the target power is lower than the maximum output power of the power unit 23, the power unit 23 provides electric energy to the automobile driving motor 11 at the target power so as to drive wheels of the electric automobile 1 to rotate; meanwhile, the power unit 23 supplies electric energy to the vehicle-mounted power battery 11 to charge the vehicle-mounted power battery 11, the output voltage of the power unit 23 is required to be ensured to be greater than the voltage of the vehicle-mounted power battery 12 in the process of charging the vehicle-mounted power battery 11, and the output current of the power unit 23 is less than or equal to the maximum charging current of the vehicle-mounted power battery 12.
In summary, according to the operation control method of the electric vehicle provided by the embodiment of the invention, the communication unit is used for acquiring the operation state information of the electric vehicle, and the control unit is used for receiving the operation state information and controlling the working state of the power unit according to the operation state information. The external generator set controls the power unit to be opened or closed according to the running state information of the electric automobile, and when the electric quantity of the vehicle-mounted power battery is insufficient or the vehicle-mounted power battery fails, the external generator set provides electric energy for the electric automobile, so that the endurance mileage of the electric automobile is prolonged, and the endurance capacity of the electric automobile is improved; meanwhile, when the power unit is in an open state, the output power or the rotating speed of the power unit is controlled according to the running state of the electric automobile, so that the working efficiency of the generator set is high and the fuel efficiency is high when the operation control system of the electric automobile works in an optimal operation mode.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (7)
1. An operation control system of an electric vehicle, characterized by comprising: the system comprises an electric automobile and a generator set externally hung on the electric automobile;
the electric automobile comprises an automobile driving motor, a vehicle-mounted power battery and an information acquisition device;
the generator set comprises a control unit, a communication unit and a power unit;
the communication unit is connected with the information acquisition device and is used for acquiring the running state information of the electric automobile;
the control unit is respectively connected with the communication unit and the power unit and is used for receiving the running state information of the electric automobile and controlling the working state of the power unit according to the running state information of the electric automobile;
when the control unit detects that the ratio of the residual capacity to the rated capacity of the vehicle-mounted power battery reaches a first threshold value, the control unit controls the power unit to be started, and controls the power unit to provide electric energy for the automobile driving motor to drive wheels of the electric automobile to rotate, and/or provides electric energy for the vehicle-mounted power battery to charge the vehicle-mounted power battery;
the control unit controls the working state of the power unit according to the running state information of the electric automobile, and comprises the following steps:
when the electric automobile is in a static state, the power unit provides electric energy for the vehicle-mounted power battery to charge the vehicle-mounted power battery, the output voltage of the power unit is greater than the voltage of the vehicle-mounted power battery, and the output current of the power unit is less than or equal to the maximum charging current of the vehicle-mounted power battery;
when the electric automobile is in a braking state, the power unit provides electric energy for the vehicle-mounted power battery to charge the vehicle-mounted power battery, and the charging current is a first charging current; the automobile driving motor converts kinetic energy into electric energy to charge the vehicle-mounted power battery, and the charging current is a second charging current; the sum of the first charging current and the second charging current is less than or equal to the maximum charging current of the vehicle-mounted power battery;
when the electric automobile is in a state other than a static state and a braking state, the control unit acquires target power of the electric automobile according to the running speed of the electric automobile, and controls the output power of the power unit according to the target power, wherein the target power represents power required by the running of the electric automobile.
2. The operation control system according to claim 1, wherein the generator set further comprises an interface unit, the power unit being connected to the interface unit for providing electrical energy to the vehicle drive motor and/or the on-board power battery via the interface unit.
3. The operational control system of claim 1, wherein the power unit comprises a fuel tank, a starter, an air intake, an exhaust, and an exhaust treatment device.
4. An operation control method for an electric vehicle based on the operation control system for an electric vehicle according to any one of claims 1 to 3, characterized by comprising:
the communication unit acquires running state information of the electric automobile;
the control unit receives the running state information of the electric automobile and controls the working state of the power unit according to the running state information of the electric automobile;
when the control unit detects that the ratio of the residual capacity to the rated capacity of the vehicle-mounted power battery reaches a first threshold value, the control unit controls the power unit to be started, and controls the power unit to provide electric energy for the automobile driving motor to drive wheels of the electric automobile to rotate, and/or provides electric energy for the vehicle-mounted power battery to charge the vehicle-mounted power battery;
the control unit controls the working state of the power unit according to the running state information of the electric automobile, and the control unit comprises: when the power unit is started, the control unit controls the output power of the power unit according to the running state information of the electric automobile;
when the power unit is started, the control unit controls the output power of the power unit according to the running state of the electric automobile, and the control method comprises the following steps:
when the electric automobile is in a static state, the power unit provides electric energy for the vehicle-mounted power battery to charge the vehicle-mounted power battery, the output voltage of the power unit is greater than the voltage of the vehicle-mounted power battery, and the output current of the power unit is less than or equal to the maximum charging current of the vehicle-mounted power battery;
when the electric automobile is in a braking state, the power unit provides electric energy for the vehicle-mounted power battery to charge the vehicle-mounted power battery, and the charging current is a first charging current; the automobile driving motor converts kinetic energy into electric energy to charge the vehicle-mounted power battery, and the charging current is a second charging current; the sum of the first charging current and the second charging current is less than or equal to the maximum charging current of the vehicle-mounted power battery;
when the electric automobile is in a state other than a static state and a braking state, the control unit acquires target power of the electric automobile according to the running speed of the electric automobile, and controls the output power of the power unit according to the target power, wherein the target power represents power required by the running of the electric automobile.
5. The operation control method according to claim 4, wherein the control unit controls the operating state of the power unit in accordance with the operating state information of the electric vehicle, including:
when the control unit detects that the ratio of the charging capacity to the rated capacity of the vehicle-mounted power battery reaches a second threshold value, the control unit controls the power unit to be turned off and controls the power unit to stop supplying electric energy to the automobile driving motor and/or the vehicle-mounted power battery.
6. The operation control method according to claim 5, characterized in that the first threshold value is 20% and the second threshold value is 80%.
7. The operation control method according to claim 4, wherein controlling the output power of the power unit in accordance with the target power includes:
when the target power is larger than the maximum output power of the power unit, the power unit provides electric energy to the automobile driving motor at the maximum output power so as to drive wheels of the electric automobile to rotate; meanwhile, the vehicle-mounted power battery provides electric energy for the automobile driving motor to drive wheels of the electric automobile to rotate;
when the target power is equal to the maximum output power of the power unit, the power unit provides electric energy to the automobile driving motor at the maximum output power so as to drive wheels of the electric automobile to rotate;
when the target power is smaller than the maximum output power of the power unit, the power unit provides electric energy to the automobile driving motor at the target power so as to drive wheels of the electric automobile to rotate; meanwhile, the power unit provides electric energy for the vehicle-mounted power battery to charge the vehicle-mounted power battery, the output voltage of the power unit is greater than the voltage of the vehicle-mounted power battery, and the output current of the power unit is smaller than or equal to the maximum charging current of the vehicle-mounted power battery.
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| CN201109375Y (en) * | 2007-11-16 | 2008-09-03 | 刘长文 | Pure electric automobile with self-bring generating-charging device |
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| CN102290838A (en) * | 2011-07-28 | 2011-12-21 | 陈明军 | Power supply control system for electric vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104158275A (en) * | 2014-09-02 | 2014-11-19 | 肖华军 | Electric generator for external hanging electric vehicle |
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| CN201109375Y (en) * | 2007-11-16 | 2008-09-03 | 刘长文 | Pure electric automobile with self-bring generating-charging device |
| CN101596902A (en) * | 2009-07-03 | 2009-12-09 | 奇瑞汽车股份有限公司 | A kind of control method of electronlmobil generator set |
| CN201472180U (en) * | 2009-09-01 | 2010-05-19 | 高钟声 | Electric automobile with intelligent power generation charging device |
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