CN117028103B - Dual engine start control device and vehicle - Google Patents
Dual engine start control device and vehicle Download PDFInfo
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- CN117028103B CN117028103B CN202310983304.3A CN202310983304A CN117028103B CN 117028103 B CN117028103 B CN 117028103B CN 202310983304 A CN202310983304 A CN 202310983304A CN 117028103 B CN117028103 B CN 117028103B
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- 230000009977 dual effect Effects 0.000 title claims description 38
- 239000007858 starting material Substances 0.000 claims abstract description 95
- 230000005284 excitation Effects 0.000 claims description 20
- 230000005611 electricity Effects 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 7
- 238000005299 abrasion Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits or control means specially adapted for starting of engines
- F02N11/0851—Circuits or control means specially adapted for starting of engines characterised by means for controlling the engagement or disengagement between engine and starter, e.g. meshing of pinion and engine gear
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
- F02B63/04—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for electric generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
- F02D29/06—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving electric generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits or control means specially adapted for starting of engines
- F02N11/0862—Circuits or control means specially adapted for starting of engines characterised by the electrical power supply means, e.g. battery
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
The application provides a double-engine starting control device and a vehicle, which belong to the technical field of engine starting control, wherein the double-engine starting control device comprises: a battery pack; the first engine comprises a first engine control module and a first engine, and the anode of the first engine is connected with the anode of the storage battery pack; the generator is respectively connected with the first engine and the storage battery pack; the second engine comprises a second engine control module and a second starter, and the positive electrode of the second starter is connected with the positive electrode of the first starter; and the whole vehicle controller is respectively connected with the first engine control module, the second engine control module and the generator and is used for controlling the generator according to the first engine rotating speed acquired from the first engine control module and the second engine rotating speed acquired from the second engine control module. Through the technical scheme of the application, the normal starting control of the double engines can be realized, the arrangement and the assembly are easy, the structure is simple, and the control is easy.
Description
Technical Field
The application belongs to the technical field of engine starting control, and particularly relates to a double-engine starting control device and a vehicle.
Background
As the capacity requirement of the large mine is continuously increased, the traditional mining dump truck is continuously developed towards the directions of large load, large volume and large power; however, with the development of new energy automobiles and the policy requirements of green mine construction, the demand and market coverage of hybrid mine cars are increasingly wider. The existing large double-sided excavator is singly provided with two groups of special storage batteries for supplying power to the engine, the number of low-voltage storage batteries is large, large square cables are required to be used for arrangement, and arrangement and assembly are difficult. In a dual engine system, after a first engine is started, a generator is driven to pull up the whole vehicle voltage, and the starter of a second engine is influenced. When the second engine is started, the current of the electromagnetic switch and the starter rotor is increased due to the increase of the voltage of the whole engine, so that the rotating speed of the starter is increased during meshing, the meshing difficulty, collision and abrasion are increased, and the driving gear and the flywheel gear ring are damaged due to long-time operation.
Disclosure of Invention
Embodiments according to the present application aim to at least improve one of the technical problems existing in the prior art or related art.
In view of this, it is an object of an embodiment according to the present application to provide a dual engine start control device.
It is a further object of an embodiment according to the application to provide a vehicle.
In order to achieve the above object, according to a first aspect of the present application, there is provided a dual engine start control device comprising: a battery pack; the first engine comprises a first engine control module and a first engine, the positive electrode of the first engine is connected with the positive electrode of the storage battery pack, and the negative electrode of the first engine is used for grounding; the generator is respectively connected with the first engine and the storage battery pack; the second engine comprises a second engine control module and a second starter, the positive electrode of the second starter is connected with the positive electrode of the first starter, and the negative electrode of the second starter is used for grounding; and the whole vehicle controller is respectively connected with the first engine control module, the second engine control module and the generator and is used for controlling the generator to work according to the first engine rotating speed acquired from the first engine control module and the second engine rotating speed acquired from the second engine control module.
The double-engine starting control device comprises a storage battery pack, a first engine, a generator, a second engine and a whole vehicle controller. The engine starter adopts a parallel connection mode, the positive electrode of the first starter is connected with the positive electrode of the storage battery, and the negative electrode of the first starter is grounded nearby. The positive pole of the second starter is connected with the positive pole of the first starter, and the negative pole of the second starter is closely lapped on the frame. The control of the normal start of the double engines is realized through one storage battery, and the arrangement and assembly of cables are easy, the structure is simple, the control is easy, the failure rate is low, and the realization is easy. The whole vehicle controller controls whether the generator works according to the first engine rotating speed and the second engine rotating speed, so that the voltage of the whole vehicle can be prevented from being increased after the first engine is started, and the increase of the rotating speed, the difficult engagement, the collision and the aggravation of abrasion of the second starter during engagement are avoided.
In addition, the technical scheme provided by the application can also have the following additional technical characteristics:
In some embodiments, optionally, the dual engine start control device further includes: a power battery; the input end of the DC/DC power supply module is connected with the power battery, the first output end of the DC/DC power supply module is connected with the positive electrode of the first starter, the second output end of the DC/DC power supply module is connected with the positive electrode of the second starter, and the DC/DC power supply module is further connected with the whole vehicle controller.
In this technical scheme, the dual engine start control device further includes a power battery and a DC/DC power module. The input end of the DC/DC power supply module is connected with the power battery, the first output end of the DC/DC power supply module is connected with the positive electrode of the first starter, and the second output end of the DC/DC power supply module is connected with the positive electrode of the second starter. The two engines are started simultaneously, the starting current is overlarge, a high-capacity storage battery pack is replaced by a DC/DC power supply module, the high-voltage power battery is converted into 24V voltage power, and the 24V voltage power is respectively connected with the positive poles of the first starter and the second starter, so that the two engines can be started simultaneously. The DC/DC power module is an electronic device for converting a direct current electric signal into another direct current electric signal, and is mainly used for converting an input voltage into an output voltage by controlling the on-off state of a switching tube while keeping the output voltage stable.
In some technical schemes, optionally, when the first engine is started and the first engine speed is greater than a preset value, the whole vehicle controller does not output a generator excitation allowing signal, and the generator does not generate electricity; when the first engine and the second engine are started and the first engine rotating speed and the second engine rotating speed are both larger than preset values, the whole vehicle controller outputs a generator excitation allowing signal, and the generator generates electricity.
In the technical scheme, when the first engine is started and the first engine rotating speed is larger than a preset value, the whole vehicle controller does not output a generator excitation allowing signal, and the generator does not generate electricity. When the first engine and the second engine are started and the first engine rotating speed and the second engine rotating speed are both larger than preset values, the whole vehicle controller outputs a generator excitation allowing signal, and the generator generates electricity. It will be appreciated that the output of the generator excitation enable signal is controlled by the overall vehicle controller. And setting the condition that the two engines are completely started to output the excitation permission signal of the generator for the whole vehicle controller. The two engine ECMs provide the engine rotational speed to the whole vehicle controller through the CAN bus, and when the first engine is started normally, namely the rotational speed is more than 600rp, the whole vehicle controller does not output excitation permission signals and does not allow the generator to generate electricity. And then the second engine is started normally, the whole vehicle controller judges that the two engines are started completely, namely the rotating speeds of the two engines are more than 600rp, and the output of the excitation permission signal of the generator is controlled. The generator starts to work and the whole vehicle runs normally.
In some embodiments, optionally, the vehicle controller is further configured to control the first engine and the second engine to start independently.
In the technical scheme, the whole vehicle controller is also used for controlling the first engine and the second engine to be started independently. In special cases, such as the failure of one engine, the method can realize the normal starting of one of the two engines, and the vehicle can slowly travel to a repair shop. Specifically, the cab is reserved with two engine independent starting switches, including a first engine independent starting and a second engine independent starting. And after the engine independent starting switch is closed, a high-level signal is sent to the whole vehicle controller. After receiving the signal, the whole vehicle controller only sends a starting signal of the appointed engine, and the engine is started normally.
In some embodiments, optionally, the dual engine start control device further includes: the first ignition relay is respectively connected with the whole vehicle controller and the first engine control module; and the second ignition relay is respectively connected with the whole vehicle controller and the second engine control module.
In this technical scheme, the dual engine start control device further includes a first ignition relay and a second ignition relay. The first ignition relay is respectively connected with the whole vehicle controller and the first engine control module. The second ignition relay is respectively connected with the whole vehicle controller and the second engine control module. Specifically, the whole vehicle controller controls the first ignition relay to be attracted after receiving the starting signal, and the first ignition signal is sent. When the first engine speed is greater than 600, the whole vehicle controller controls the second ignition relay to be attracted, and a second ignition signal is sent.
In some aspects, optionally, the engine start control device further includes: the first starting relay is respectively connected with the first starter and the first engine control module; and the second starting relay is respectively connected with the second starter and the second engine control module.
In this aspect, the engine start control device further includes a first start relay and a second start relay. The first starting relay is respectively connected with the first starter and the first engine control module. The second starting relay is respectively connected with the second starter and the second engine control module. When the first starting relay receives the first ignition signal, the first starting relay is attracted, and the first starter drives the engine to start working. When the second starting relay receives a second ignition signal, the second starting relay is attracted, and the second starter drives the engine to start working.
In some embodiments, optionally, the dual engine start control device further includes: the power supply main switch is arranged between the positive electrode of the first starter and the positive electrode of the storage battery.
In the technical scheme, the double-engine starting control device further comprises a power supply main switch, wherein the power supply main switch is arranged between the positive electrode of the first starter and the positive electrode of the storage battery.
In some embodiments, optionally, the dual engine start control device further includes: the total insurance is arranged between the power supply main switch and the positive electrode of the first starter.
In the technical scheme, the double-engine starting control device further comprises a total insurance, and the total insurance is arranged between the power supply main switch and the positive electrode of the first starter.
In some aspects, the battery pack optionally includes a 24V battery.
In this embodiment, the battery pack includes a 24V battery.
According to a second aspect of the present application there is provided a vehicle comprising: the two-engine start control device according to any one of the first aspect of the application.
The vehicle provided by the technical scheme of the application comprises the dual-engine starting control device according to any one of the first aspect of the application, so that the dual-engine starting control device according to any one of the first aspect of the application has all the beneficial effects, and is not repeated herein.
Additional aspects and advantages of embodiments according to the application will be apparent from the description which follows, or may be learned by practice of embodiments according to the application.
Drawings
FIG. 1 is a schematic diagram of the operating principle of a dual engine start control device according to one embodiment provided by the present application;
FIG. 2 is a schematic diagram of the operating principle of a dual engine start control device according to another embodiment provided by the present application;
FIG. 3 is a block diagram schematically illustrating a structure of a dual engine start control apparatus according to one embodiment provided by the present application;
FIG. 4 is a block schematic diagram of a first engine according to one embodiment of the present application;
FIG. 5 is a schematic block diagram of a second engine according to one embodiment of the present disclosure;
FIG. 6 is a flowchart of the start steps of a dual engine start control device according to one embodiment provided by the present application;
FIG. 7 is a flowchart of the start steps of a dual engine start control device according to one embodiment provided by the present application;
FIG. 8 is a flowchart of the start steps of a dual engine start control device according to one embodiment provided by the present application;
FIG. 9 is a flowchart of the start steps of a dual engine start control device according to one embodiment provided by the present application;
FIG. 10 is a block diagram schematically illustrating a structure of a dual engine start control apparatus according to one embodiment provided by the present application;
fig. 11 is a block diagram schematically illustrating a structure of a dual engine start control device according to an embodiment of the present application.
Wherein, the correspondence between the reference numerals and the component names in fig. 1 to 11 is:
10: a dual engine start control device; 110: a battery pack; 120: a first starter; 130: a second starter; 140: a power battery; 150: a DC/DC power supply module; 160: a power supply main switch; 170: total insurance; 210: a first engine; 220: a first engine body; 230: a first engine control module; 240: a generator; 250: a second engine; 260: a second engine body; 270: a second engine control module; 280: a vehicle controller; 290: a first ignition relay; 300: a second ignition relay; 310: a first start relay; 320: and a second start relay.
Detailed Description
In order that the above-recited objects, features and advantages of embodiments according to the present application can be more clearly understood, a further detailed description of embodiments according to the present application will be rendered by reference to the appended drawings and detailed description. It should be noted that the features according to the embodiments of the present application may be combined with each other without collision.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of embodiments according to the application, but embodiments according to the application may be practiced otherwise than as described herein, and thus the scope of protection afforded by embodiments according to the application is not limited by the specific embodiments disclosed below.
Some embodiments provided according to the present application are described below with reference to fig. 1 to 11.
As shown in fig. 1, 3, 4 and 5, a dual engine start control apparatus 10 according to an embodiment of the present application includes: a battery pack 110; the first engine 210 includes a first engine body 220, a first engine control module 230 and a first starter 120, the first engine body 220 is connected with the first starter 120, the positive pole of the first starter 120 is connected with the positive pole of the battery pack 110, and the negative pole of the first starter 120 is used for grounding; a generator 240 connected to the first engine 210 and the battery pack 110, respectively; the second engine 250 comprises a second engine body 260, a second engine control module 270 and a second starter 130, wherein the second engine body 260 is connected with the second starter 130, the positive electrode of the second starter 130 is connected with the positive electrode of the first starter 120, and the negative electrode of the second starter 130 is used for grounding; the whole vehicle controller 280 is respectively connected with the first engine control module 230, the second engine control module 270 and the generator 240, and the whole vehicle controller 280 is used for controlling the generator 240 to work according to the first engine speed acquired from the first engine control module 230 and the second engine speed acquired from the second engine control module 270.
The dual engine start control device 10 provided according to the present embodiment includes a battery pack 110, a first engine 210, a generator 240, a second engine 250, and a vehicle controller 280. The engine starter adopts a parallel connection mode, the positive electrode of the first starter 120 is connected with the positive electrode of the storage battery pack 110, and the negative electrode of the first starter 120 is grounded nearby. The positive electrode of the second starter 130 is connected to the positive electrode of the first starter 120, and the negative electrode of the second starter 130 is placed on the vehicle frame in the vicinity. The control of the normal start of the double engine is realized by one storage battery pack 110, and the arrangement and assembly of the cable wires are easy, the structure is simple, the control is easy, the failure rate is low, and the realization is easy. By controlling whether the generator 240 operates according to the first engine speed and the second engine speed by the vehicle controller 280, it is possible to avoid pulling up the vehicle voltage after the first engine is started, thereby avoiding the increase in the speed of the second starter 130 during engagement, difficulty in engagement, collision and aggravation of wear.
As shown in fig. 2, in some embodiments, the dual engine start control device 10 optionally further includes a power battery 140 and a DC/DC power module 150. An input terminal of the DC/DC power module 150 is connected to the power battery 140, a first output terminal of the DC/DC power module 150 is connected to the positive electrode of the first starter 120, and a second output terminal of the DC/DC power module 150 is connected to the positive electrode of the second starter 130. The two engines are started simultaneously, the starting current is overlarge, the high-voltage power battery 140 is converted into 24V voltage power through the DC/DC power module 150 instead of the high-capacity storage battery 110, the 24V voltage power is respectively connected with the positive electrodes of the first starter 120 and the second starter 130, and the two engines can be started simultaneously. The DC/DC power module 150 is an electronic device for converting a DC electrical signal into another DC electrical signal, and is mainly used for converting an input voltage into an output voltage by controlling the on-off state of a switching tube while maintaining the output voltage stable.
In some embodiments, optionally, when the first engine is started and the first engine speed is greater than the preset value, the vehicle controller 280 does not output a generator excitation enable signal and the generator 240 does not generate power. When the first engine and the second engine are both started and the first engine speed and the second engine speed are both greater than the preset values, the vehicle controller 280 outputs a generator excitation permission signal, and the generator 240 generates power. It will be appreciated that the output of the generator excitation enable signal is controlled by the vehicle controller 280. The condition that the two engines are completely started is set as the condition that the vehicle controller 280 outputs the generator excitation permission signal. The two engine ECMs provide the engine speed to the whole vehicle controller 280 through the CAN bus, and when the first engine is started normally, namely the speed is more than 600rp, the whole vehicle controller 280 does not output an excitation permission signal and does not allow the generator 240 to generate electricity. And then the second engine is started normally, the whole vehicle controller 280 judges that the two engines are started completely, namely the rotation speeds of the two engines are more than 600rp, and the output of the excitation permission signal of the generator is controlled. The generator 240 starts to operate and the whole vehicle operates normally. The ECM is an electronic control module of the engine, and has the function of continuously monitoring and controlling the normal working operation of the engine. CAN is an abbreviation for Controller Area Network, an ISO internationally standardized serial communication protocol.
In some embodiments, the overall vehicle controller 280 is also optionally configured to control the first and second engines to start individually. In special cases, such as the failure of one engine, the method can realize the normal starting of one of the two engines, and the vehicle can slowly travel to a repair shop. Specifically, the cab is reserved with two engine independent starting switches, including a first engine independent starting and a second engine independent starting. After the engine individual start switch is closed, a high level signal is sent to the vehicle controller 280. After receiving the signal, the whole vehicle controller 280 only sends a start signal designating the engine, which is started normally.
As shown in fig. 10, in some embodiments, the dual engine start control device 10 optionally further includes a first ignition relay 290 and a second ignition relay 300. The first ignition relay 290 is connected to the vehicle controller 280 and the first engine control module 230, respectively. The second ignition relay 300 is connected to the vehicle controller 280 and the second engine control module 270, respectively. Specifically, the vehicle controller 280 receives the start signal and then controls the first ignition relay 290 to be turned on, and the first ignition signal is sent. When the first engine speed is greater than 600, the vehicle controller 280 controls the second ignition relay 300 to engage, and the second ignition signal is sent.
As shown in fig. 11, in some embodiments, the dual engine start control device 10 optionally further includes a first start relay 310 and a second start relay 320. The first start relay 310 is connected to the first starter 120 and the first engine control module 230, respectively. The second start relay 320 is connected to the second starter 130 and the second engine control module 270, respectively. When the first ignition signal is received by the first start relay 310, the first start relay 310 is engaged, and the first starter 120 drives the engine to start working. When the second starting relay 320 receives the second ignition signal, the second starting relay 320 is engaged, and the second starter 130 drives the engine to start working.
In some embodiments, the dual engine start control device 10 optionally further includes a main power switch 160, the main power switch 160 being disposed between the positive electrode of the first starter 120 and the positive electrode of the battery pack 110.
In some embodiments, the dual engine start control device 10 optionally further includes a total fuse 170, the total fuse 170 being disposed between the mains switch 160 and the positive pole of the first starter 120.
In some embodiments, battery pack 110 optionally includes 24V batteries.
A vehicle according to an embodiment of the present application includes the dual engine start control apparatus 10 of any of the embodiments described above.
The vehicle provided according to the embodiment of the present application includes the dual engine start control device 10 according to any one of the embodiments described above, and thus has all the advantages of the dual engine start control device 10 according to any one of the embodiments described above, and will not be described in detail herein.
As shown in fig. 1 to 9, a dual engine start control apparatus 10 according to one embodiment of the present application is provided, in which two engines are started in sequence; the two engine starters are connected with a 24V low-voltage storage battery of the whole vehicle in a parallel connection mode, and the second engine is restarted after the first engine is started.
Two engines are started simultaneously; because the starting current is too large (more than 600A), the capacity of the low-voltage storage battery is increased and the low-voltage storage battery is connected with a 240mm 2 power line, and the realization is difficult, the DC/DC power module 150 is used for replacing the high-capacity storage battery pack 110, the high-voltage power battery 140 is converted into 24V voltage and is respectively connected with the positive electrode of the starter, and the two engines are started simultaneously.
Specifically, the engine starts successively: the engine starter adopts a parallel connection mode; the positive electrode of the first engine starter is connected with the positive electrode of the 24V storage battery of the whole vehicle, and the negative electrode of the starter is grounded nearby; the positive electrode of the second engine starter is connected with the positive electrode of the second engine starter, and the negative electrode of the starter is closely lapped on the frame.
As shown in fig. 6, engine start control: the first step: the power master switch 160 is closed and the whole vehicle 30 is powered on. And a second step of: and placing the ignition key in an ON gear, electrifying the whole vehicle 15, performing self-checking by an engine ECU, and performing the next step after the self-checking is successful. And a third step of:
① The ignition key is placed at the start gear, and after receiving the start signal, the whole vehicle controller 280 controls the first ignition relay 290 to be closed, and the ignition signal 1 is sent.
② The first engine ECU receives the ignition signal and then controls the first start relay 310 to be engaged, and the starter drives the engine to start working.
③ The first engine ECU transmits the engine real-time rotation speed to the whole vehicle controller 280, and when the first engine rotation speed is greater than 600, the first engine 120 stops operating.
④ Meanwhile, when the first engine speed is greater than 600, the vehicle controller 280 controls the second ignition relay 300 to be engaged, and the ignition signal 2 is sent.
⑤ The second engine ECU controls the second starting relay 320 to be closed after receiving the ignition signal 2, and the starter drives the engine to start working.
⑥ The second engine ECU transmits the engine real-time rotation speed to the whole vehicle controller 280, and when the second engine rotation speed is greater than 600, the second starter 130 stops operating.
As shown in fig. 7, the engine is started simultaneously: the positive pole of the first engine starter is connected with the output 1 of the DC/DC power module 150, and the negative pole of the starter is grounded nearby; the second engine starter positive pole is connected with the output 2 of the DC/DC power module 150, and the starter negative pole is closely lapped on the frame.
Engine start control: the first step: closing a knob of a main power switch 160, and electrifying the whole vehicle 30; and a second step of: the ignition key is placed in an ON gear, the whole vehicle 15 is electrified, the engine ECU and a battery management system BMS perform self-test, and the next step is performed after the self-test is successful, wherein the battery management system BMS is mainly used for intelligently managing and maintaining each battery unit, preventing the battery from being overcharged and overdischarged, prolonging the service life of the battery and monitoring the state of the battery; and a third step of:
① Placing the ignition key in a start gear, and after receiving a start signal, the whole vehicle controller 280 sends an upper high-voltage instruction to the BMS through a CAN bus;
② The BMS controls the high voltage on the power battery 140 after the high voltage contactors are engaged;
③ Meanwhile, the whole vehicle controller 280 wakes the DC/DC power module 150 to start working, converts high-voltage power into 24V power and supplies power to the engine starter;
④ After receiving the start signal, the whole vehicle controller 280 synchronously controls the first ignition relay 290 and the second ignition relay 300 to be closed, and ignition signals 1 and 2 are sent;
⑤ The first engine and the second engine ECU control the corresponding starting relay to be attracted after receiving the ignition signal, and the starter drives the engine to start working;
⑥ The engine ECU sends the real-time engine speed to the whole vehicle controller 280, and when the first engine speed and the second engine speed are higher than 600, the corresponding starter stops working;
⑦ The vehicle controller 280 receives the first engine and the second engine with the rotation speed greater than 600 and then simultaneously controls the DC/DC to stop working.
The voltage provided by the storage battery to the whole vehicle is generally about 24V, and the engine is normally started to drive the generator 240 to work, so that the voltage of the whole vehicle can be raised to about 28V, and the whole vehicle is powered at low voltage and the storage battery is charged.
In the dual-engine system, after the first engine is started, the generator 240 is driven to pull Gao Zhengche voltage, so that the starter of the second engine can be influenced; when the second engine is started, the current of the electromagnetic switch and the starter rotor is increased due to the 28V voltage of the whole engine, so that the rotating speed of the starter is increased during engagement, the engagement difficulty, the collision and the abrasion are increased, and the driving gear and the flywheel gear ring are damaged due to long-time operation.
As shown in fig. 8, the control of the power generation of the engine can be realized by starting the engine successively, so that the problem is avoided;
① The whole vehicle controller 280 controls the output of the generator excitation permission signal;
② Setting the condition that two engines are completely started to VCU to output generator excitation permission signals, VCU (Vehicle Control Unit) is the whole vehicle controller 280, which is a core control unit of the present new energy automobile control system;
③ The two engine ECMs provide the engine speed to the VCU through the CAN bus, and when the first engine is started normally (the speed is more than 600 rp), the VCU does not output an excitation permission signal and does not allow the generator 240 to generate electricity;
④ And then the second engine is started normally, the VCU judges that the two engines are started completely (the rotation speeds of the two engines are more than 600 rp), and the output of the excitation permission signal of the generator is controlled. The generator 240 starts to operate and the whole vehicle operates normally.
The engine is started simultaneously, starter power is provided by the DC/DC module, and the problem is avoided without being associated with a low-voltage storage battery.
Under special conditions (such as an engine failure), the method can realize normal starting of one of the two engines, and the vehicle can slowly travel to a repair shop;
control of single engine start under a two engine system as shown in fig. 9:
① Two engine independent starting switches (a first engine independent starting, a second engine independent starting) are reserved in the cab;
② After the engine single starting switch is closed, a high-level signal is sent to the VCU;
③ After the VCU receives the signal, only a starting signal of the appointed engine is sent, and the engine is started normally;
In summary, the beneficial effects of the embodiment of the application are as follows:
1. simple structure, easy control, low failure rate and easy realization.
2. The dual-engine starter power supply is connected with the low-voltage storage battery in parallel or is connected with the DC/DC power supply module simply, and is convenient to assemble.
In embodiments according to the application, the terms "first," "second," "third," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more, unless expressly defined otherwise. The terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the above terms in the embodiments according to the present application can be understood by those of ordinary skill in the art according to specific circumstances.
In the description of the embodiments according to the present application, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience in describing the embodiments according to the present application and simplifying the description, and do not indicate or imply that the devices or units referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the embodiments according to the present application.
In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, 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 according to the present application. In this specification, schematic representations of the above terms do not necessarily 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.
The foregoing is merely a preferred embodiment according to the present application and is not intended to limit the embodiment according to the present application, and various modifications and variations may be made to the embodiment according to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments according to the present application should be included in the protection scope of the embodiments according to the present application.
Claims (6)
1. A dual engine start control device characterized by comprising:
A battery pack (110);
the first engine (210) comprises a first engine body (220), a first engine control module (230) and a first engine (120), wherein the first engine body (220) is connected with the first engine (120), the positive electrode of the first engine (120) is connected with the positive electrode of the storage battery pack (110), and the negative electrode of the first engine (120) is used for grounding;
a generator (240) connected to the first engine (210) and the battery pack (110), respectively;
the second engine (250) comprises a second engine body (260), a second engine control module (270) and a second starter (130), wherein the second engine body (260) is connected with the second starter (130), the positive electrode of the second starter (130) is connected with the positive electrode of the first starter (120), and the negative electrode of the second starter (130) is used for grounding;
the whole vehicle controller (280) is respectively connected with the first engine control module (230), the second engine control module (270) and the generator (240), and the whole vehicle controller (280) is used for controlling the generator (240) to work according to the first engine rotating speed acquired from the first engine control module (230) and the second engine rotating speed acquired from the second engine control module (270);
A power battery (140);
The input end of the DC/DC power supply module (150) is connected with the power battery (140), the first output end of the DC/DC power supply module (150) is connected with the positive electrode of the first starter (120), the second output end of the DC/DC power supply module (150) is connected with the positive electrode of the second starter (130), and the DC/DC power supply module (150) is also connected with the whole vehicle controller (280);
When the first engine (210) is started and the first engine rotating speed is larger than a preset value, the whole vehicle controller (280) does not output a generator excitation allowing signal, and the generator (240) does not generate electricity;
When the first engine (210) and the second engine (250) are started and the first engine rotating speed and the second engine rotating speed are both larger than preset values, the whole vehicle controller (280) outputs a generator excitation allowing signal, and the generator (240) generates power;
The first ignition relay (290) is respectively connected with the whole vehicle controller (280) and the first engine control module (230);
the second ignition relay (300) is respectively connected with the whole vehicle controller (280) and the second engine control module (270);
A first start relay (310) connected to the first starter (120) and the first engine control module (230), respectively;
And the second starting relay (320) is respectively connected with the second starter (130) and the second engine control module (270).
2. The dual engine start control apparatus according to claim 1, characterized in that,
The vehicle controller (280) is further configured to control the first engine (210) and the second engine (250) to be started independently.
3. The dual engine start control device according to claim 1 or 2, characterized by further comprising:
and a power supply main switch (160) which is arranged between the positive electrode of the first starter (120) and the positive electrode of the storage battery pack (110).
4. The dual engine start control device according to claim 3, characterized by further comprising:
And a total insurance (170) arranged between the power supply main switch (160) and the positive electrode of the first starter (120).
5. The dual engine start control apparatus according to claim 1 or 2, characterized in that,
The battery pack (110) includes 24V batteries.
6. A vehicle, characterized by comprising:
the dual engine start control apparatus according to any one of claims 1 to 5.
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| CN202310983304.3A CN117028103B (en) | 2023-08-07 | 2023-08-07 | Dual engine start control device and vehicle |
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