CN112406537A - Vehicle and control system and method thereof - Google Patents
Vehicle and control system and method thereof Download PDFInfo
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- CN112406537A CN112406537A CN201910770257.8A CN201910770257A CN112406537A CN 112406537 A CN112406537 A CN 112406537A CN 201910770257 A CN201910770257 A CN 201910770257A CN 112406537 A CN112406537 A CN 112406537A
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- power supply
- vehicle
- control unit
- battery
- inverter
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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
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
Abstract
The invention provides a vehicle and a control system and a control method thereof, wherein the control system of the vehicle comprises: the battery module comprises a battery component and a power supply circuit, and the power supply circuit is provided with a battery power supply control unit; the power supply device comprises a first power supply branch and a second power supply branch; an inverter connected to the first power supply branch; the motor controller is connected to the second power supply branch, and a motor power supply control unit is arranged on the second power supply branch; and the control module is connected with the battery power supply control unit and the motor power supply control unit. Therefore, through the work of the discrete inverter and the whole vehicle power system, the vehicle can start the inverter to work under any state so as to realize the purpose that the vehicle outputs alternating current externally, meet the power supply requirements of different special vehicle types or electric appliances on the vehicle, and avoid the risk of out-of-control vehicle during driving or parking.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to a vehicle and a control system and method thereof.
Background
In the related art, vehicles such as new energy vehicles generally convert 220V ac power into high voltage dc power through an on-board charger to charge a power battery, or convert 220V ac power into high voltage dc power through a charging pile to charge the power battery. However, the new energy automobile cannot provide alternating current, and cannot meet the alternating current power demand of some special automobile types such as a motor home, an ambulance, an ice cream vehicle and the like.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the first purpose of the invention is to provide a control system of a vehicle, which can start an inverter to work under any state of the vehicle to realize that the vehicle provides alternating current by independently controlling the power system of the whole vehicle.
A second object of the invention is to propose a vehicle.
A third object of the invention is to propose a control method of a vehicle.
In order to achieve the above object, an embodiment of a first aspect of the present invention provides a control system for a vehicle, including: the battery module comprises a battery component and a power supply circuit, the battery component supplies power to the outside through the power supply circuit, and a battery power supply control unit is arranged on the power supply circuit; the first power supply branch and the second power supply branch are connected with the power supply circuit and are connected in parallel; an inverter connected to the first power supply branch; the motor controller is connected to the second power supply branch, and a motor power supply control unit is arranged on the second power supply branch; and the control module is connected with the battery power supply control unit and the motor power supply control unit and is used for controlling the battery power supply control unit and the motor power supply control unit.
According to the control system of the vehicle provided by the embodiment of the invention, the battery assembly supplies power to the outside through the power supply circuit, the power supply circuit is provided with the battery power supply control unit, the first power supply branch and the second power supply branch are connected to the power supply circuit in parallel, the inverter is connected to the first power supply branch, the motor controller is connected to the second power supply branch, the second power supply branch is provided with the motor power supply control unit, and the control module controls the battery power supply control unit and the motor power supply control unit to invert direct current in a vehicle battery into alternating current. And still can guarantee the independence of inverter work and whole car driving system power-on to, can export the alternating current when the vehicle parks, whole car driving system is uncharged simultaneously, avoids appearing the risk of vehicle out of control, guarantees personnel and vehicle safety, can also guarantee the free switching of inverter operating condition when the vehicle is gone, can start at any time or terminate the output of alternating current, and can not produce the influence to whole car and go.
In addition, the control system of the vehicle according to the embodiment of the present invention may further have the following additional technical features:
according to one embodiment of the invention, the motor supply control unit comprises a first switch and a motor pre-charging sub-unit connected in parallel with the first switch, the motor pre-charging sub-unit comprising a first resistor and a second switch connected in series.
According to one embodiment of the present invention, the control module is configured to acquire a state of the vehicle, inverter operation information, and vehicle operation information, and control the battery power supply control unit and the motor power supply control unit according to the state of the vehicle, the inverter operation information, and the vehicle operation information.
According to one embodiment of the invention, the control module is configured to, when the vehicle is in a parking state, control the battery power supply control unit to control the power supply circuit of the battery module to supply power and control the inverter to convert the dc power output by the battery module into ac power if an inverter start instruction is received, and control the motor power supply control unit to stop supplying power to the second power supply branch.
According to an embodiment of the invention, the control module is further configured to, when the vehicle is in a parking state and the inverter outputs the alternating current, control the second power supply branch to supply power by controlling the motor power supply control unit to power up the motor controller if the vehicle operation information meets a vehicle starting condition.
According to one embodiment of the invention, the control module is configured to control the power supply circuit of the battery module and the second power supply branch to supply power by controlling the battery power supply control unit and the motor power supply control unit if the vehicle operation information satisfies a vehicle starting condition when the vehicle is in a parking state and the inverter does not output the alternating current, and control the vehicle to enter a driving state when the vehicle operation information satisfies a driving condition.
According to one embodiment of the invention, the control module is used for controlling the inverter to convert the direct current output by the battery module into alternating current if an inverter starting instruction is received when the vehicle enters a driving state.
According to one embodiment of the invention, the control module is used for controlling the vehicle to power off by controlling the battery power supply control unit when the inverter closing instruction is received and the vehicle is in a parking state.
In order to achieve the above object, a second aspect of the present invention provides a vehicle including the control system of the vehicle.
According to the vehicle provided by the embodiment of the invention, the vehicle can output alternating current through the control system of the vehicle provided by the embodiment, and the alternating current power demand of special vehicle types such as a motor home, an ambulance, an ice cream vehicle and the like can be met. And still can guarantee the independence of inverter work and whole car driving system power-on to, can outwards output the alternating current when the vehicle parks, whole car driving system is uncharged simultaneously, avoids appearing the risk of vehicle out of control, guarantees personnel and vehicle safety, can also guarantee the free switching of inverter operating condition when the vehicle is gone, can start at any time or terminate the output of alternating current, and can not produce the influence to whole car and travel.
In order to achieve the above object, a control method of a vehicle is provided in an embodiment of a third aspect of the present invention, in which a control system of the vehicle includes a battery module, an inverter, and a motor controller, the battery module includes a battery assembly and a power supply circuit, the battery assembly supplies power to the outside through the power supply circuit, a battery power supply control unit is disposed on the power supply circuit, the power supply circuit is further connected with a first power supply branch and a second power supply branch, the first power supply branch and the second power supply branch are connected in parallel, the inverter is connected to the first power supply branch, and the motor controller is connected to the second power supply branch, wherein a motor power supply control unit is disposed on the second power supply branch, and the method includes the following steps: acquiring the state of the vehicle, inverter operation information and vehicle operation information; controlling the battery power supply control unit and the motor power supply control unit according to the state of the vehicle, the inverter operation information, and the vehicle operation information.
According to the control method of the vehicle provided by the embodiment of the invention, the battery assembly supplies power to the outside through the power supply circuit, the power supply circuit is provided with the battery power supply control unit, the first power supply branch and the second power supply branch are connected in parallel to the power supply circuit, the inverter is connected to the first power supply branch, the motor controller is connected to the second power supply branch, the second power supply branch is provided with the motor power supply control unit, and the control module controls the battery power supply control unit and the motor power supply control unit to invert direct current in a vehicle battery into alternating current. And still can guarantee the independence of inverter work and whole car driving system power-on to, can outwards output the alternating current when the vehicle parks, whole car driving system is uncharged simultaneously, avoids appearing the risk of vehicle out of control, guarantees personnel and vehicle safety, can also guarantee the free switching of inverter operating condition when the vehicle is gone, can start at any time or terminate the output of alternating current, and can not produce the influence to whole car and travel.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a block schematic diagram of a control system of a vehicle according to an embodiment of the present invention;
FIG. 2 is a schematic circuit diagram of a motor supply control unit of a control system of a vehicle according to one embodiment of the present invention;
FIG. 3 is a schematic circuit diagram of a battery-powered control unit of a control system of a vehicle according to one embodiment of the present invention;
FIG. 4 is a schematic illustration of a low pressure portion of a control system of a vehicle according to one embodiment of the present invention;
FIG. 5 is a schematic diagram of a high pressure portion of a control system of a vehicle according to one embodiment of the present invention;
FIG. 6 is a block schematic diagram of a vehicle according to an embodiment of the invention;
FIG. 7 is a flowchart of a control method of a vehicle according to an embodiment of the invention; and
fig. 8 is a flowchart of a control method of a vehicle according to an embodiment of the present invention.
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 the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
Fig. 1 is a block schematic diagram of a control system of a vehicle according to an embodiment of the present invention. As shown in fig. 1, the control system includes: battery module 101, first power supply branch 105 and second power supply branch 106, inverter 107, motor controller 108, control module 110.
The battery module 101 includes a battery assembly 102 and a power supply circuit 103, the battery assembly 102 supplies power to the outside through the power supply circuit 103, and the power supply circuit 103 is provided with a battery power supply control unit 104. Specifically, when the battery power supply control unit 104 is turned on, the power supply circuit 103 forms a path, and the battery assembly 102 supplies power to the outside through the power supply circuit 103; when the battery power supply control unit 104 is turned off, the power supply circuit 103 is disconnected and the battery pack 102 stops supplying power. As one example, the battery assembly 102 may include a plurality of batteries connected in series.
The first power supply branch 105 and the second power supply branch 106 are connected with the power supply circuit 103, and the first power supply branch 105 and the second power supply branch 106 are connected in parallel; the inverter 107 is connected to the first power supply branch 105. Specifically, the inverter 107 may invert the dc power transmitted from the battery module 101 to the first power supply branch 105 through the power supply circuit 103 into ac power and output the ac power to meet the ac power demand of some special vehicle types (e.g., a motor home, an ambulance, an ice cream vehicle, etc.), such as an ac power load on a vehicle, such as a vehicle-mounted charger, a vehicle-mounted television, etc.
The motor controller 108 is connected to the second power supply branch 106, wherein the second power supply branch 106 is provided with a motor power supply control unit 109, specifically, when the motor power supply control unit 109 is turned on, the second power supply branch 106 forms a path, and the direct current provided by the battery assembly 102 is transmitted to the motor controller 108; when the motor power supply control unit 109 is turned off, the second power supply branch 106 is disconnected, and the dc power provided by the battery assembly 102 cannot be transmitted to the motor controller 108.
When the second power supply branch 106 forms a path, the motor controller 108 may invert the dc power transmitted from the battery module 101 to the second power supply branch 106 through the power supply circuit 103 into ac power, and output the ac power to the driving motor 502 to control the operation of the driving motor 502.
It can be understood that when the battery power supply control unit 104 is turned on, the first power supply branch 105 may transmit the direct current of the power supply circuit 103 to the inverter 107, and the inverter 107 may invert the direct current into an alternating current and output the alternating current, so as to meet the negative demand of alternating current power consumption of the vehicle; when the battery power supply control unit 104 and the motor power supply control unit 109 are turned on simultaneously, the second power supply branch 106 may provide the direct current of the power supply circuit 103 to the motor controller 108, and the motor controller 108 inverts the direct current into an alternating current and outputs the alternating current to the driving motor 502.
The control module 110 is connected to the battery power supply control unit 104 and the motor power supply control unit 109, and the control module 110 is configured to control the battery power supply control unit 104 and the motor power supply control unit 109.
It can be understood that, in the embodiment of the present invention, the control module 110 may independently control the battery power supply control unit 104 and the motor power supply control unit 109 to be turned on or off, respectively, and further, when the control module 110 controls the battery power supply control unit 104 to be turned on, the inverter 107 performs inversion, and at this time, the power on or power off of the motor controller 108 is separately controlled by the motor power supply control unit 109, that is, when the control module 110 controls the motor power supply control unit 109 to be turned on, the motor controller 108 powers on to control the driving motor 502, and when the control module 110 controls the motor power supply control unit 109 to be turned off, the motor controller 108 powers off.
From this, through setting up the dc-to-ac converter, realize the vehicle output alternating current, satisfy the interchange power consumption demand of special motorcycle types such as car as a house, the ambulance, ice cream car, through the power-on or the power-off of independently controlling motor controller 108, can guarantee the independence of inverter work and whole car driving system power-on, guarantee to export the alternating current when the vehicle parks, whole car driving system is uncharged simultaneously, avoid appearing the risk that the vehicle is out of control, guarantee personnel and vehicle safety, can also guarantee when the vehicle is driving, make the free switching of inverter operating condition, start or stop the output of alternating current at any time, and can not drive the whole car and produce the influence. In addition, the system is simple in structure, easy to realize and convenient to modify in the later period.
In one embodiment of the present invention, as shown in fig. 2, the motor power supply control unit 109 includes a first switch K1 and a motor pre-charge sub-unit 201, wherein the motor pre-charge sub-unit 201 is connected in parallel with the first switch K1, and the motor pre-charge sub-unit 201 includes a first resistor R1 and a second switch K2 connected in series, and the first switch K1 and the motor pre-charge sub-unit 201 may be connected at a positive input terminal of the motor controller 108.
Wherein the first switch K1 may be a main positive relay of the motor controller 108, the second switch K2 may be a pre-charge relay of the motor controller 108, and the first resistor R1 may be a pre-charge resistor of the motor controller 108.
Specifically, when the motor controller 108 is powered on, the control module 110 may control the second switch K2 in the motor pre-charging subunit 201 to be closed and control the first switch K1 to be opened, at this time, the motor controller 108 is pre-charged through the branch where the motor pre-charging subunit 201 is located until the input voltage of the motor controller 108 reaches the pre-charging voltage, and when the input voltage of the motor controller 108 reaches the pre-charging voltage, the control module 110 controls the second switch K2 to be opened and the first switch K1 to be closed, at this time, the motor controller 108 is powered through the branch where the first switch K1 is located. When controlling the power down of the motor controller 108, the control module 110 may control the first switch K1 to open.
Therefore, by arranging the motor pre-charging subunit, the safety of the second power supply branch circuit in the process of supplying power to the motor controller is improved.
In one embodiment of the present invention, as shown in fig. 3, the battery power supply control unit 104 includes a third switch K3, a fourth switch K4, and a pre-charging unit 301, wherein the pre-charging unit 301 is connected in parallel with the third switch K3, and the pre-charging unit 301 includes a second resistor R2 and a fifth switch K5 connected in series. The parallel connection of the pre-charge subunit 104 and the third switch K3 is connected to the positive electrode of the battery pack 102, and the fourth switch K4 is connected to the negative electrode of the battery pack 102.
Among them, the third switch K3 may be a total positive relay of the battery assembly 102, the fourth switch K4 may be a total negative relay of the battery assembly 102, the second resistor R2 may be a precharge resistor of the battery assembly 102, and the fifth switch K5 may be a precharge relay of the battery assembly 102.
Specifically, when the vehicle is powered on at a high voltage, the control module 110 may first control the fourth switch K4 to be closed, at this time, the entire vehicle performs high voltage detection, and when the high voltage circuit is normal (i.e., there is no insulation, adhesion, or interlock fault), the control module 110 controls the fifth switch K5 to be closed, the third switch K3 is in an open state, at this time, the branch where the battery pre-charging subunit 301 is located is pre-charged, when the voltage on the power supply circuit 103 reaches the pre-charging voltage, the control module 110 may open the fifth switch K5 and control the third switch K3 to be closed, and the branch where the third switch K3 is located controls the power supply circuit 103 to supply power to the first power supply branch 105 and the second power supply branch 106.
Therefore, by arranging the battery pre-charging subunit, the safety of the power supply circuit in the process of supplying power to the first power supply branch and the second power supply branch is improved.
The operation of the control system of the vehicle according to the embodiment of the present invention will be described in detail with reference to fig. 4 and 5.
According to one embodiment of the present invention, the control module 110 is configured to acquire a state of the vehicle, inverter operation information, and vehicle operation information, and control the battery power supply control unit 104 and the motor power supply control unit 109 according to the state of the vehicle, the inverter operation information, and the vehicle operation information.
The state of the vehicle comprises a parking state and a driving state; the inverter operation information includes an inverter shutdown command, an inverter wake-up command, and an inverter startup command, as shown in fig. 4, the control module 110 receives the inverter operation information by communicating with the inverter switch 405, for example, the control module 110 and the inverter switch 405 may communicate via hard wires. The vehicle operation information includes the status of the key switch 401, the status of the vehicle range component 402, the status of the brake pedal 403, the status of the accelerator pedal 404, etc., wherein, as shown in FIG. 4, the control module 110 receives the status of the key switch 401, the status of the vehicle range component 402, the status of the brake pedal 403, and the status of the accelerator pedal 404 by communicating with the key switch 401, the vehicle range component 402, the brake pedal 403, and the accelerator pedal 404, for example, the control module 110 may communicate with the key switch 401, the vehicle range component 402, the brake pedal 403, and the accelerator pedal 404 via hard wires.
The states of the key switch 401 include OFF, ON, START; the state of the vehicle range assembly 402 includes D range; the state of the brake pedal 403 includes the brake pedal being depressed, the brake pedal not being depressed; the state of accelerator pedal 404 includes the accelerator pedal being depressed and the accelerator pedal not being depressed.
It should be noted that the Control module 110 may include a vehicle controller vcu (vehicle Control unit) of the vehicle, and is responsible for controlling and coordinating the vehicle.
As shown in fig. 5, the control system of the vehicle may further include a vehicle-mounted charger 408, a dc-dc converter 409 and a fast charging socket 504 that are connected in parallel to the power supply circuit 103, the vehicle-mounted charger 408 is further connected to the slow charging socket 503, and the dc-dc converter 409 is further connected to the storage battery 501, so that when the power supply circuit 103 is closed, if the slow charging socket 503 is connected to ac power, the vehicle-mounted charger 408 may convert ac power input by the slow charging socket 503 into dc power to charge the battery assembly 102; if the quick charging socket 504 is connected with the charging pile, the charging pile can directly charge the battery assembly 102 through the quick charging socket 504; the dc-dc converter 409 may convert the high voltage dc provided by the onboard charger 408 or the quick charge receptacle 504 or the battery pack 102 into low voltage dc to charge the battery 501.
As shown in fig. 4, the control system of the vehicle may further include a display device 406, and the display device 406 may display the state information of the vehicle, for example, the state of the inverter 107, the power of the battery assembly 102, and the power consumption of the entire vehicle, under the control of the control module 110. As an example, the display device 406 may be disposed at the rear of the vehicle, so that a user can know the operating state of the inverter and the electric quantity state of the whole vehicle in time.
The control module 110 may communicate with the display device 406, the vehicle-mounted charger 407, the dc-dc converter 408, the battery management unit 409, and the motor controller 108 to control the display device 406, the vehicle-mounted charger 407, the dc-dc converter 408, the battery management unit 409, and the motor controller 108, for example, the control module 110 may communicate with the display device 406, the vehicle-mounted charger 407, the dc-dc converter 408, the battery management unit 409, and the motor controller 108 through a CAN bus. The control module 110 may also communicate with the inverter 107 to control the inverter 107, for example, the control module 110 and the inverter 107 may communicate via hard wires.
According to an embodiment of the present invention, as shown in fig. 4 and 5, if the control module 110 receives an inverter start command while the vehicle is in a parking state, the control module 110 controls the battery power supply control unit 104 to control the power supply circuit 103 of the battery module 101 to supply power, and controls the inverter 107 to convert the dc power output by the battery module 101 into ac power, and controls the motor power supply control unit 109 to stop the power supply of the second power supply branch 106.
It should be noted that before the control module 110 receives the inverter start instruction, the control module 110 may further control the vehicle to perform low voltage detection according to the inverter wake-up instruction. Specifically, when the inverter switch 405 is turned from the OFF range to the wake-up range, the control module 110 receives an inverter wake-up command input by the inverter switch 405, and then controls the vehicle to perform low voltage detection, for example, controls the vehicle-mounted charger 407, the dc-dc converter 408, the battery management unit 409, and the motor controller 108 to perform self-detection.
It is understood that the display device 406 at the rear of the vehicle may display the low voltage detection result. If the low-voltage detection result is normal, an operator turns the inverter switch 405 from the wake-up gear to the start-up gear, the control module 110 receives an inverter start instruction input by the inverter switch 405, at this time, the control module 110 controls the fourth switch K4 in the battery module 101 to be closed, and the whole vehicle performs high-voltage detection. If the high voltage detection is normal (the circuit has no insulation, adhesion, interlock fault, etc.), the control module 110 controls the fifth switch K5 to be closed, and when the input voltage of the inverter 107 reaches the pre-charging voltage, the control module 110 controls the third switch K3 to be closed and the fifth switch K5 to be open, and then the control module 110 may control the inverter 107 to output the ac power to the outside. At this time, the display device 406 at the rear of the vehicle displays information such as the normal operation of the inverter 107, the amount of power of the battery pack 102, and the power consumption of the entire vehicle. Therefore, alternating current can be output, and the alternating current power utilization requirements of special vehicle types such as motor homes, ambulances, ice cream vehicles and the like are met. And still can guarantee the independence that the dc-to-ac converter work and whole car driving system electrified to, when the vehicle parks, output alternating current, whole car driving system is uncharged simultaneously, avoids appearing the risk that the vehicle is out of control, guarantees personnel and vehicle safety.
According to an embodiment of the present invention, as shown in fig. 4 and 5, when the vehicle is in a parking state and the inverter 107 outputs the alternating current, if the vehicle operation information satisfies the vehicle start condition, the motor power supply control unit 109 is controlled by the control module 110 to control the second power supply branch 106 to supply power to power on the motor controller 109. The vehicle START condition may be that the key switch 401 is in START gear and the brake pedal 402 is depressed.
Specifically, when the vehicle is in a parking state and the inverter 107 outputs alternating current, if the control module 110 determines that the key switch 401 is in a START gear and the brake pedal 402 is pressed down, it is determined that the vehicle operation information satisfies the vehicle START condition, at this time, the vehicle is started, the control module 110 controls the second switch K2 to be closed, when the input voltage of the motor controller 109 reaches the precharge voltage, the control module 110 controls the first switch K1 to be closed and the second switch K2 to be open, at this time, the motor controller 109 is in a power-on state, the entire vehicle enters a "READY" state, and if the vehicle operation information satisfies the driving condition, for example, the vehicle gear reaches a "D gear", the vehicle can normally drive. Therefore, when the inverter 107 outputs alternating current, the vehicle is started, high voltage does not need to be lowered, high voltage is raised again, and only the motor power supply control unit needs to be controlled to work, so that the vehicle is safe and convenient. According to an embodiment of the present invention, as shown in fig. 4 and 5, when the vehicle is in a parking state and the inverter 107 does not output ac power, if the vehicle operation information satisfies the vehicle start condition, the battery power supply control unit 104 and the motor power supply control unit 109 are controlled by the control module 110 to control the power supply circuit 103 of the battery module 101 and the second power supply branch 106 to supply power, and to control the vehicle to enter a driving state when the vehicle operation information satisfies the driving condition.
It should be noted that, in determining whether the vehicle operation information satisfies the vehicle start condition, the control module 110 may further control the vehicle to perform low voltage detection when the key switch 401 is in the ON gear.
Specifically, when the key switch 401 is in the ON position, the control module 110 obtains the information that the key switch 401 is in the ON position, and then controls the vehicle to perform low voltage detection, for example, controls the vehicle-mounted charger 407, the dc-dc converter 408, the battery management unit 409, and the motor controller 108 to perform self-detection. When the display device 406 displays that the low voltage detection result is normal, the key switch 401 is turned to the START gear, and the brake pedal 403 is depressed,
when the control module 110 determines that the key switch 401 is in the START gear and the brake pedal 402 is stepped on, it is determined that the vehicle operation information meets the vehicle starting condition, at this time, the vehicle is started, the control module 110 controls the fourth switch K4 in the battery module 101 to be closed, the whole vehicle performs high-voltage detection, if the high-voltage detection is normal (no insulation, adhesion, interlocking failure and the like in a circuit), the control module 110 controls the first switch K1 and the fifth switch K5 to be closed, when the input voltage of the motor controller 109 reaches the pre-charging voltage, the control module 110 controls the fifth switch K5 to be opened, the third switch K3 is closed, the motor controller 109 is in the power-on state, and the whole vehicle enters the READY state. When the vehicle operation information meets the driving condition, such as the vehicle gear reaches the D gear, the vehicle can drive normally. According to an embodiment of the present invention, as shown in fig. 4 and 5, when the vehicle enters a driving state, if the control module 110 receives an inverter start command, the inverter 107 is controlled by the control module 110 to convert the dc power output from the battery module 101 into ac power.
Specifically, as shown in fig. 4 and 5, in the driving state, if the operator shifts the inverter switch 405 to the starting gear, that is, the control module 110 receives a starting instruction input by the inverter switch 405, the control module 110 controls the inverter 107 to start to output the ac power, for example, 220V ac mains power. At this time, the control module 110 may also control the display device 406 at the rear of the vehicle to display the normal operation of the inverter 107, and display information such as the power of the battery assembly 102 and the power consumption of the entire vehicle.
According to an embodiment of the present invention, as shown in fig. 4 and 5, when the control module 110 receives the inverter shutdown command and the vehicle is in a parking state, the battery power supply control unit 104 is controlled by the control module 110 to control the vehicle to power off.
It should be noted that the parking state may be that the key switch 401 is in the OFF range information, and the vehicle speed is less than a preset vehicle speed, for example, 5 km/h.
Specifically, when the inversion operation is completed, the inverter switch 405 may be turned to the OFF position, and at this time, the control module 110 receives an inverter turn-OFF command, if the vehicle is in a stopped state, the control module 110 controls the high voltage under the entire vehicle, that is, controls the third switch K3 to be turned OFF, and completes high voltage discharge through the discharge loop, and when the voltage of the battery assembly 102 is less than a prescribed safe voltage (for example, 60V), the control module 110 controls the fourth switch K4 to be turned OFF, and the entire vehicle performs "high voltage power down detection", "component archiving", and completes power down, and the vehicle power down is completed by the control module 110.
In summary, according to the control system of the vehicle provided by the embodiment of the present invention, the battery assembly supplies power to the outside through the power supply circuit, the power supply circuit is provided with the battery power supply control unit, the first power supply branch and the second power supply branch are connected in parallel to the power supply circuit, the inverter is connected to the first power supply branch, the motor controller is connected to the second power supply branch, the second power supply branch is provided with the motor power supply control unit, and the control module controls the battery power supply control unit and the motor power supply control unit to invert the direct current in the vehicle battery into the alternating current. And still can guarantee the independence of dc-to-ac converter work and whole car driving system to, can outwards output the alternating current when the vehicle parks, whole car driving system is uncharged simultaneously, avoids appearing the risk of vehicle out of control, guarantees personnel and vehicle safety, can also guarantee the free switching of dc-to-ac converter operating condition when the vehicle is driving, can start or stop the output of alternating current at any time, and can not exert an influence to whole car driving.
Based on the control system of the vehicle of the embodiment, the invention further provides the vehicle.
FIG. 6 is a block schematic diagram of a vehicle according to an embodiment of the present invention. As shown in fig. 6, the vehicle 601 includes the control system 602 of the vehicle in the above embodiment.
According to the vehicle provided by the embodiment of the invention, the control system of the vehicle provided by the embodiment can realize the purpose that the vehicle outputs the alternating current to the outside, and the alternating current power utilization requirements of special vehicle types such as a motor home, an ambulance, an ice cream vehicle and the like are met. And still can guarantee the independence of dc-to-ac converter work and whole car driving system to, can outwards output the alternating current when the vehicle parks, whole car driving system is uncharged simultaneously, avoids appearing the risk of vehicle out of control, guarantees personnel and vehicle safety, can also guarantee the free switching of dc-to-ac converter operating condition when the vehicle is driving, can start or stop the output of alternating current at any time, and can not exert an influence to whole car driving. In order to realize the embodiment, the invention further provides a control method of the vehicle.
Fig. 7 is a flowchart of a control method of a vehicle according to an embodiment of the invention. The control system of the vehicle comprises a battery module, an inverter and a motor controller, wherein the battery module comprises a battery assembly and a power supply circuit, the battery assembly supplies power to the outside through the power supply circuit, the power supply circuit is provided with a battery power supply control unit, the power supply circuit is further connected with a first power supply branch and a second power supply branch, the first power supply branch and the second power supply branch are connected in parallel, the inverter is connected to the first power supply branch, the motor controller is connected to the second power supply branch, and the second power supply branch is provided with a motor power supply control unit.
As shown in fig. 7, the control method includes the steps of:
s701: acquiring the state of a vehicle, inverter operation information and vehicle operation information;
s702: controlling the battery power supply control unit and the motor power supply control unit according to a state of a vehicle, the inverter operation information, and the vehicle operation information.
The following describes in detail a control method of a vehicle according to an embodiment of the present invention with reference to fig. 8, and as shown in fig. 8, the control method of the vehicle specifically includes the following steps:
s801: the vehicle is in a parking state, and if an inverter wake-up command is received through the inverter switch or the key switch is in an OFF range, step S802 is performed.
S802: and (4) carrying out low-voltage detection on the vehicle, namely controlling a vehicle-mounted charger, a direct current-direct current converter, a battery management unit and a motor controller to carry out self-detection.
Step S803 is performed if the low voltage detection is passed and an inverter START instruction is received through the inverter switch, and step S808 is performed if the low voltage detection is passed and the key switch is in START gear and the brake pedal is depressed.
S803: and controlling a fourth switch connected with the negative electrode of the battery pack in the battery power supply control unit to be closed, namely controlling a total negative relay of the battery pack to be closed.
S804: and the battery assembly performs high-voltage detection.
If the high voltage detection is normal, step S805 is performed.
S805: and controlling a fifth switch in a battery pre-charging subunit of the battery power supply control unit connected with the anode of the battery assembly to be closed, namely controlling a pre-charging relay of the battery assembly to be closed.
S806: when the voltage on the power supply circuit connected with the battery assembly reaches the pre-charging voltage, the fifth switch is controlled to be switched off, and the third switch connected with the anode of the battery assembly in the battery power supply control unit is controlled to be switched on, namely, the pre-charging relay of the battery assembly is controlled to be switched off, and the total positive relay of the battery assembly is controlled to be switched on.
S807: and controlling the inverter to output alternating current.
If the motor self-test is passed, the key switch is in the START gear and the brake pedal is pressed down, executing step S814; if the inverter-off command is received through the inverter switch and the vehicle is in a stopped state, step S816 is performed.
S808: and controlling the fourth switch to be switched on and off, namely controlling a total negative relay of the battery pack.
S809: and the battery assembly performs high-voltage detection.
If the high voltage detection is normal, step S810 is performed.
S810: and controlling a first switch connected with the positive input end of the motor controller in the motor power supply control unit to be closed, namely controlling a total positive relay of the motor controller to be closed.
S811: and controlling a fifth switch in a motor pre-charging subunit of the battery power supply control unit connected with the anode of the battery assembly to be closed, namely controlling a pre-charging relay of the battery assembly to be closed.
S812: when the input voltage of the motor controller reaches the pre-charging voltage, the fifth switch is controlled to be switched off, and the third switch connected with the positive electrode of the battery assembly in the battery power supply control unit is controlled to be switched on, namely, the pre-charging relay of the battery assembly is controlled to be switched off, the total positive relay of the battery assembly is controlled to be switched on, and the vehicle enters a starting state.
S813: and when the vehicle operation information meets the driving condition, controlling the vehicle to normally drive.
If an inverter start instruction is received through the inverter switch, step S807 is performed; if the key switch is OFF, the vehicle speed is less than the preset vehicle speed, and the inverter-OFF command is received through the inverter switch, step S816 is performed.
S814: and controlling a second switch in a motor pre-charging subunit of the motor power supply control unit to be closed, namely controlling a pre-charging relay of the motor controller to be closed.
S815: when the input voltage of the motor controller reaches the pre-charging voltage, the second switch in the motor power supply control unit is controlled to be switched off, and the first switch is switched on, that is, the pre-charging relay of the motor controller is controlled to be switched off, the main positive relay of the motor controller is controlled to be switched on, the vehicle enters a starting state, and step S813 is executed.
S816: and controlling a third switch connected with the positive electrode of the battery pack in the battery power supply control unit to be disconnected, namely controlling a total positive relay of the battery pack to be disconnected.
S817: high-voltage discharge is performed through the discharge circuit.
S818: when the voltage of the battery pack is less than a prescribed safe voltage (for example, 60V), the fourth switch connected to the negative electrode of the battery pack in the battery power supply control unit is controlled to be turned off, that is, the total negative relay of the battery pack is controlled to be turned off.
S819: and carrying out high-voltage power failure detection.
S820: and (5) archiving the parts.
S821: and completing the system power failure.
S822: and the vehicle controller is powered off, and the vehicle is powered off.
In summary, according to the control method for the vehicle provided by the embodiment of the invention, the vehicle can output the alternating current to the outside, and the alternating current power demand of a special vehicle type such as a motor home, an ambulance, an ice cream vehicle and the like is met. And still can guarantee the independence of dc-to-ac converter work and whole car driving system to, can outwards output the alternating current when the vehicle parks, whole car driving system is uncharged simultaneously, avoids appearing the risk of vehicle out of control, guarantees personnel and vehicle safety, can also guarantee the free switching of dc-to-ac converter operating condition when the vehicle is driving, can start or stop the output of alternating current at any time, and can not exert an influence to whole car driving.
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.
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.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing steps of a custom logic function or process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. If implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc. 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 control system of a vehicle, characterized by comprising:
the battery module comprises a battery component and a power supply circuit, the battery component supplies power to the outside through the power supply circuit, and a battery power supply control unit is arranged on the power supply circuit;
the first power supply branch and the second power supply branch are connected with the power supply circuit and are connected in parallel;
an inverter connected to the first power supply branch;
the motor controller is connected to the second power supply branch, and a motor power supply control unit is arranged on the second power supply branch;
and the control module is connected with the battery power supply control unit and the motor power supply control unit and is used for controlling the battery power supply control unit and the motor power supply control unit.
2. The control system of a vehicle according to claim 1, wherein the motor-supply control unit includes a first switch and a motor pre-charge sub-unit connected in parallel with the first switch, the motor pre-charge sub-unit including a first resistor and a second switch connected in series.
3. The control system of the vehicle according to claim 1, wherein the control module is configured to acquire a state of the vehicle, inverter operation information, and vehicle operation information, and control the battery power supply control unit and the motor power supply control unit according to the state of the vehicle, the inverter operation information, and the vehicle operation information.
4. The vehicle control system according to claim 3, wherein the control module is configured to control the power supply circuit of the battery module to supply power by controlling the battery power supply control unit if an inverter start command is received while the vehicle is in a parking state, and control the inverter to convert direct current output by the battery module into alternating current, and control the motor power supply control unit to stop power supply of the second power supply branch.
5. The vehicle control system of claim 4, wherein the control module is further configured to control the second power supply branch to supply power to the motor controller by controlling the motor power supply control unit to control the second power supply branch to supply power if the vehicle operation information satisfies a vehicle start condition when the vehicle is in a parking state and the inverter outputs the alternating current.
6. The control system of claim 3, wherein the control module is configured to, when the vehicle is in a stopped state and the inverter does not output the alternating current, control the power supply circuit of the battery module and the second power supply branch to supply power by controlling the battery power supply control unit and the motor power supply control unit if the vehicle operation information satisfies a vehicle start condition, and control the vehicle to enter a driving state when the vehicle operation information satisfies a driving condition.
7. The vehicle control system of claim 6, wherein the control module is configured to control the inverter to convert the direct current output by the battery module into alternating current if an inverter start command is received when the vehicle enters a driving state.
8. The control system of the vehicle according to claim 4 or 7, wherein the control module is configured to control the vehicle to power down by controlling the battery power supply control unit when an inverter shutdown instruction is received and the vehicle is in a parking state.
9. A vehicle characterized by comprising a control system of the vehicle according to any one of claims 1-8.
10. The control method of the vehicle is characterized in that a control system of the vehicle comprises a battery module, an inverter and a motor controller, the battery module comprises a battery assembly and a power supply circuit, the battery assembly supplies power to the outside through the power supply circuit, a battery power supply control unit is arranged on the power supply circuit, the power supply circuit is further connected with a first power supply branch and a second power supply branch, the first power supply branch and the second power supply branch are connected in parallel, the inverter is connected with the first power supply branch, the motor controller is connected with the second power supply branch, a motor power supply control unit is arranged on the second power supply branch, and the method comprises the following steps:
acquiring the state of the vehicle, inverter operation information and vehicle operation information;
controlling the battery power supply control unit and the motor power supply control unit according to the state of the vehicle, the inverter operation information, and the vehicle operation information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910770257.8A CN112406537A (en) | 2019-08-20 | 2019-08-20 | Vehicle and control system and method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910770257.8A CN112406537A (en) | 2019-08-20 | 2019-08-20 | Vehicle and control system and method thereof |
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| CN112406537A true CN112406537A (en) | 2021-02-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113997790A (en) * | 2021-12-14 | 2022-02-01 | 江西吉利新能源商用车有限公司 | Power-on control method and device for caravan loading device and readable storage medium |
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