CN111042970B - Vehicle cold start control method and device - Google Patents
Vehicle cold start control method and device Download PDFInfo
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- CN111042970B CN111042970B CN201911281324.6A CN201911281324A CN111042970B CN 111042970 B CN111042970 B CN 111042970B CN 201911281324 A CN201911281324 A CN 201911281324A CN 111042970 B CN111042970 B CN 111042970B
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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
- F02N11/0803—Circuits or control means specially adapted for starting of engines characterised by means for initiating engine start or stop
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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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- 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
- F02N11/087—Details of the switching means in starting circuits, e.g. relays or electronic switches
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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
- F02N11/087—Details of the switching means in starting circuits, e.g. relays or electronic switches
- F02N2011/0874—Details of the switching means in starting circuits, e.g. relays or electronic switches characterised by said switch being an electronic switch
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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
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Abstract
The invention provides a vehicle cold start control method and a device thereof, belonging to the technical field of automobiles. The problem that the engine can not be successfully started under the extremely cold condition in the prior art is solved. The vehicle cold start control method comprises the steps that when the fact that a start condition is met is judged, a PEPS controller sends a start request signal to an engine controller through a GW gateway, the engine controller controls a second relay KA2 to suck, the PEPS controller controls a first relay KA1 to suck, and a storage battery and a starter are connected through the simultaneous suction of the first relay KA1 and the second relay KA 2; when the PEPS controller and the GW gateway stop communicating, the engine controller continues to receive signals within a preset time value I; and the PEPS controller continues to send a starting request signal to the engine controller after the communication is recovered within a second preset time value, wherein the first preset time value is larger than the second preset time value. A vehicle cold start control apparatus is also presented. The invention can improve the success rate of the cold start of the vehicle.
Description
Technical Field
The invention belongs to the technical field of automobiles, and relates to a vehicle cold start control method and a vehicle cold start control device.
Background
The starter and the storage battery are important parts in a vehicle starting system, and in the product design and development stage, after the model selection of the starter and the storage battery is completed, the starting of the vehicle under the normal temperature condition generally has no problem. However, under extremely cold conditions, the internal resistance of electrolyte in the storage battery is increased when the storage battery is used as a power source of an automobile, the discharge capacity of the storage battery is weakened, and the viscosity of engine oil of an engine is increased and the starting resistance moment of the engine is increased due to the reduction of the ambient temperature. Under the extremely cold condition, the problem of difficult cold start of the vehicle often occurs to vehicle owners in the use process of the vehicle due to the weakened performance of the storage battery and the increased resistance torque of the engine. When the problem occurs, the problem is generally solved by replacing the storage battery or the external lap joint power supply, and if the periphery of the vehicle is not provided with the replaceable storage battery or the external lap joint power supply, great inconvenience is brought to a vehicle owner.
Aiming at the problem of difficult cold start of a vehicle under an extremely cold condition, the prior adopted more solutions are to use a storage battery with increased capacity or a high-performance storage battery for loading. However, the change of the storage battery increases the production cost of the vehicle more, and the problem that the vehicle cannot be started successfully and cannot be solved fundamentally still exists.
Disclosure of Invention
The invention aims to provide a vehicle cold start control method and a device thereof aiming at the problems in the prior art, and the technical problems to be solved are as follows: how to improve the success rate of starting the vehicle under the extremely cold condition.
The purpose of the invention can be realized by the following technical scheme: a vehicle cold start control method comprising:
judging whether the starting condition is met according to a signal transmitted by a PEPS (Passive entry Passive Start) key starting key and a gear signal transmitted by a TCU (transmission control Unit);
when the starting condition is met, the PEPS controller sends a starting request signal to the engine controller through the GW gateway, the engine controller controls the second relay KA2 to suck, the PEPS controller controls the first relay KA1 to suck, and the storage battery and the starter are connected through the simultaneous suction of the first relay KA1 and the second relay KA 2;
when the PEPS controller and the GW gateway stop communicating, the engine controller continues to receive signals within a preset time value I; and after the PEPS controller recovers communication within a second preset time value, the PEPS controller continuously sends a starting request signal to the engine controller, the first relay KA1 and the second relay KA2 are kept to be simultaneously attracted until the starter successfully drags the engine to start, and the first preset time value is larger than the second preset time value.
The working principle of the vehicle cold start control method is as follows: when the starting condition is met, the PEPS controller sends a starting request signal to the GW gateway, the engine controller controls the second relay KA2 to suck, the PEPS controller controls the first relay KA1 to suck, the engine resistance moment is small under the normal temperature condition, the discharging capacity of the storage battery is good, the low voltage of the storage battery is high in the starting process, the PEPS controller is in normal communication with the GW gateway, the first relay KA1 and the second relay KA2 suck simultaneously, the starter is continuously electrified to drag the engine, and the vehicle is started successfully; if the engine controller can continuously keep the signal receiving capacity of the first preset time value under the extremely cold condition when the GW and the PEPS stop communicating, the PEPS controller can continuously send the starting request signal to the engine controller after the interruption of the communication after the PEPS controller passes the interruption recovery time of the second preset time value, and the engine controller can also receive the starting request signal sent by the GW within the first preset time value, so that the starting machine is not powered on and stopped when the PEPS controller and the GW stop communicating, the vehicle can be started successfully under the extremely cold condition, and the starting success rate is high.
In the vehicle cold start control method, when the PEPS one-key start key transmits a pressed signal and the vehicle gear acquired by the TCU is the P gear, the starting condition is judged to be met.
In the above vehicle cold start control method, the first preset time value is set to 80-120 ms.
In the above vehicle cold start control method, the second preset time value is set to 20-40 ms.
In the vehicle cold start control method, the first relay KA1 comprises a coil and a normally open switch connected between the starter and the vehicle-mounted battery, the second relay KA2 comprises a coil and a normally open switch, one end of the coil of the first relay KA1 is connected with the PEPS controller, the other end of the coil of the first relay KA 3526 is connected with one end of the normally open switch of the second relay KA2, the other end of the normally open switch of the second relay KA2 is connected with the vehicle-mounted battery, one end of the coil of the second relay KA2 is connected with the engine controller, and the other end of the coil of the second relay KA2 is connected with the vehicle-mounted battery. The starter is connected with the vehicle-mounted storage battery through the double relays, and the reliability of vehicle starting is effectively improved due to the arrangement.
The vehicle cold start control method further comprises a CAN bus, the TCU and the PEPS controller are in communication connection through the CAN bus, and the PEPS controller is in communication connection with the GW gateway through the CAN bus.
A vehicle cold start control device comprises an engine controller, a signal acquisition unit for acquiring a vehicle gear signal and an ignition switch state signal, a first relay KA1 connected between a vehicle-mounted storage battery and a starter, a second relay KA2 connected in series between a first relay KA1 and the vehicle-mounted storage battery, a GW gateway and a PEPS controller, wherein the second relay KA2 is connected with the engine controller, the first relay KA1 is connected with the PEPS controller, the PEPS controller is connected with a TCU, the PEPS controller is connected with the engine controller through the GW gateway, the engine controller is provided with a communication maintaining module for continuously maintaining a receiving signal of a preset time value after a start request command is interrupted, and the PEPS controller is provided with a communication restoring module for restoring communication within the preset time value two, the PEPS controller is used for sending a starting request signal to the GW gateway and controlling the first relay KA1 to suck when the signal collected by the signal collecting unit meets the vehicle starting condition, and the engine controller is used for controlling the second relay KA2 to suck according to the starting request signal sent by the GW gateway.
The working principle of the vehicle cold start control device is as follows: when the PEPS controller judges that the vehicle meets the starting condition, a starting request signal is sent to the engine controller through the GW gateway, the engine controller controls the second relay KA2 to attract, meanwhile, the PEPS controller sends a control signal to the first relay KA1, due to attraction of the second relay KA2, at the moment, the first relay KA1 conducts attraction action under the control of the PEPS controller, at the moment, the starter is connected with the vehicle-mounted storage battery, the starter is electrified to drag the engine, in the process that the starter is electrified to drag the engine, even if the vehicle is in an extremely cold condition, the PEPS controller and the GW gateway suddenly stop communication, but because the preset time value I is larger than the preset time value II, the communication recovery module in the PEPS controller works, the PEPS controller recovers the communication capability within the preset time value II, the communication maintenance module in the engine controller works, and the engine controller continuously maintains the signal receiving capability within the preset time value I, namely the engine controller is still in a working state, at the moment, the second relay KA2 is still in an attraction state, therefore, when the PEPS controller recovers the communication capability, the GW gateway can continuously send a starting request signal to the engine controller, the engine controller controls the second relay KA2 to attract, the PEPS controller controls the first relay KA1 to attract, if the situation that the PEPS controller and the GW gateway suddenly stop communication occurs again, the PEPS controller and the engine controller continue the operation until the engine is successfully started; when the PEPS controller and the GW gateway suddenly stop communicating, the starter is always in the continuous power-on state, the problem that the starting fails due to the fact that the starter is powered on and is finally broken under the extremely cold condition of the existing vehicle is solved, the control device can guarantee that the starter is always in the continuous power-on state, the vehicle can be started successfully under the extremely cold condition, and the starting success rate is improved.
In the vehicle cold start control device, the signal acquisition unit comprises a TCU for acquiring a current gear signal of the gear shift lever and a PEPS one-key start key for acquiring an ignition switch state signal, and the TCU and the PEPS one-key start key are both connected with the PEPS controller. And the vehicle is started only when the current gear of the gear shift lever is detected to be the P gear and the state signal of the ignition switch is ON, so that the reliability and the success of starting the vehicle are ensured.
The vehicle cold start control device further comprises a CAN bus, the TCU is connected with the PEPS controller through the CAN bus, and the PEPS controller is connected with the GW gateway through the CAN bus.
In the above vehicle cold start control device, the first relay KA1 includes the coil and connects the normally open switch between starter and vehicle battery, the second relay KA2 includes coil and normally open switch, the one end and the PEPS controller of the coil of first relay KA1 are connected, and the other end is connected with the one end of the normally open switch of second relay KA2, another termination vehicle battery of the normally open switch of second relay KA2, the engine controller is connected to the one end of the coil of second relay KA2, and the vehicle battery is connected to the other end of the coil of second relay KA 2. The starter is connected with the vehicle-mounted storage battery through the double relays, and the reliability of vehicle starting is effectively improved due to the arrangement.
In the vehicle cold start control device, the vehicle cold start control device further comprises a vehicle body controller and an alarm connected with the vehicle body controller, and the vehicle body controller is connected with the PEPS controller. When the PEPS controller is monitored to stop communication, the vehicle body controller sends a reminding signal to the alarm, and the alarm is used for reminding, so that a driver can know the starting condition of the vehicle conveniently.
Compared with the prior art, the vehicle cold start control method and the vehicle cold start control device respectively control the first relay KA1 and the second relay KA2 through the engine controller and the PEPS controller, control the starter to be connected with the power supply circuit through the first relay KA1 and the second relay KA2, improve the reliability of vehicle start, increase the function that the engine controller continuously keeps a preset time value and receives signals after the GW gateway stops communication by adjusting the signal stop and recovery time of the PEPS controller, solve the problem that the start is interrupted due to too low pull-down voltage of the storage battery in the vehicle cold start process and the vehicle cannot be normally started, and effectively improve the success rate of the vehicle start under the extremely cold condition.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic diagram of the control structure of the present invention.
In the figure, 1, a PEPS controller; 1a, a communication recovery module; 2. an engine controller; 2a, a communication maintaining module; 3. a GW gateway; 4. a TCU; 5. a starter; 6. a storage battery; 7. a PEPS key starts a key; 8. a vehicle body controller; 9. an alarm; 10. a signal acquisition unit; 11. a CAN bus.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1, the vehicle cold start control method includes: judging whether the starting condition is met according to the signal transmitted by the PEPS one-key starting key 7 and the gear signal transmitted by the TCU 4;
when the PEPS one-key starting key 7 transmits a pressed signal and the TCU 4 acquires that the vehicle gear is a P-gear, judging that a starting condition is met, sending a starting request signal to the engine controller 2 by the PEPS controller 1 through the GW gateway 3, controlling the second relay KA2 to suck by the engine controller 2, controlling the first relay KA1 to suck by the PEPS controller 1, and connecting the storage battery 6 and the starter 5 through the simultaneous suction of the first relay KA1 and the second relay KA 2;
when the PEPS controller 1 and the GW gateway 3 stop communicating, the engine controller 2 continues to receive signals within a preset time value one; after the communication is recovered within the second preset time value, the PEPS controller 1 continues to send a starting request signal to the engine controller 2, the first relay KA1 and the second relay KA2 are kept simultaneously attracted until the starter 5 successfully drags the engine to start, and the first preset time value is larger than the second preset time value.
Preferably, the first preset time value is set to 80-120 ms. Preferably, the preset time value one is set to 100 ms.
Preferably, the second preset time value is set to be 20-40 ms. Preferably, the preset time value two is set to 30 ms.
Preferably, the first relay KA1 includes a coil and a normally open switch connected between the starter 5 and the vehicle-mounted battery 6, the second relay KA2 includes a coil and a normally open switch, one end of the coil of the first relay KA1 is connected with the PEPS controller 1, the other end of the coil is connected with one end of the normally open switch of the second relay KA2, the other end of the normally open switch of the second relay KA2 is connected with the vehicle-mounted battery 6, one end of the coil of the second relay KA2 is connected with the engine controller 2, and the other end of the coil of the second relay KA2 is connected with the vehicle-mounted battery 6. The starter 5 is connected with the vehicle-mounted storage battery 6 through a double relay, and the reliability of vehicle starting is effectively improved due to the arrangement.
Preferably, the vehicle cold start control method further comprises a CAN bus 11, the TCU 4 and the PEPS controller 1 are in communication connection through the CAN bus 11, and the PEPS controller 1 is in communication connection with the GW gateway 3 through the CAN bus 11.
As shown in fig. 2, the vehicle cold start control device comprises an engine controller 2, a signal acquisition unit 10 for acquiring a vehicle gear signal and an ignition switch state signal, and a first relay KA1 connected between a vehicle-mounted battery 6 and a starter 5, wherein a second relay KA2 is further connected in series between the first relay KA1 and the vehicle-mounted battery 6, the vehicle cold start control device further comprises a GW gateway 3 and a PEPS controller 1, the second relay KA2 is connected with the engine controller 2, the first relay KA1 is connected with the PEPS controller 1, the PEPS controller 1 is connected with a TCU 4, the PEPS controller 1 is connected with the engine controller 2 through the GW gateway 3, the engine controller 2 has a communication maintaining module 2a for continuously maintaining a receiving signal at a preset time value after a start request command is interrupted, the PEPS controller 1 has a communication restoring module 1a for restoring communication at a preset time value two, the PEPS controller 1 is used for sending a starting request signal to the GW gateway 3 and controlling the first relay KA1 to suck when the signal collected by the signal collecting unit 10 meets the vehicle starting condition, and the engine controller 2 is used for controlling the second relay KA2 to suck according to the starting request signal sent by the GW gateway 3.
Preferably, the signal acquisition unit 10 comprises a TCU 4 for acquiring a current gear signal of the shift lever and a PEPS one-key start button for acquiring an ignition switch state signal, and both the TCU 4 and the PEPS one-key start button are connected with the PEPS controller 1. And the vehicle is started only when the current gear of the gear shift lever is detected to be the P gear and the state signal of the ignition switch is ON, so that the reliability and the success of starting the vehicle are ensured.
Preferably, the vehicle cold start control device further comprises a CAN bus 11, the TCU 4 is connected with the PEPS controller 1 through the CAN bus 11, and the PEPS controller 1 is connected with the GW gateway 3 through the CAN bus 11.
Preferably, the first relay KA1 includes a coil and a normally open switch connected between the starter 5 and the vehicle-mounted battery 6, the second relay KA2 includes a coil and a normally open switch, one end of the coil of the first relay KA1 is connected with the PEPS controller 1, the other end of the coil is connected with one end of the normally open switch of the second relay KA2, the other end of the normally open switch of the second relay KA2 is connected with the vehicle-mounted battery 6, one end of the coil of the second relay KA2 is connected with the engine controller 2, and the other end of the coil of the second relay KA2 is connected with the vehicle-mounted battery 6. The starter 5 is connected with the vehicle-mounted storage battery 6 through a double relay, and the reliability of vehicle starting is effectively improved due to the arrangement.
Preferably, the vehicle cold start control device further comprises a vehicle body controller 8 and an alarm 9 connected with the vehicle body controller 8, and the vehicle body controller 8 is connected with the PEPS controller 1. When monitoring that the PEPS controller 1 stops communication, the vehicle body controller 8 sends a reminding signal to the alarm 9, and the alarm 9 is used for reminding, so that a driver can know the starting condition of the vehicle conveniently.
Preferably, the PEPS controller 1 and the PEPS one-key start key 7 are integrated with the vehicle body controller 8.
The working principle of the vehicle cold start control method and the device thereof is as follows: when the PEPS key start button 7 in the signal acquisition unit 10 is pressed, namely an ignition switch state signal is ON, and the TCU 4 detects that the current gear of the gear shift lever is P gear, the PEPS controller 1 judges that the vehicle meets the start condition, at the moment, the PEPS controller 1 sends a start request signal to the GW gateway 3, preferably, the PEPS controller 1 sends the start request signal to the GW gateway 3 through the CAN bus 11, the engine controller 2 controls the second relay KA2 to suck after receiving the start request signal, the PEPS controller 1 controls the first relay KA1 to suck, under the normal temperature condition, the engine resistance moment is small, the discharging capacity of the storage battery 6 is good, the pull-down voltage of the storage battery 6 is high in the start process, the PEPS controller 1 and the GW gateway 3 normally communicate, the first relay KA1 and the second relay KA2 simultaneously suck, the starter 5 continuously powers ON and drags the engine, the vehicle is successfully started; if the engine resistance moment is increased sharply under an extremely cold condition, the discharging capacity of the storage battery 6 is weakened, and the PEPS controller 1 and the GW gateway 3 have a fault of stopping communication due to the fact that the voltage of the storage battery 6 is too low during starting, under the existing condition, the engine controller 2 cannot control the second relay KA2 to suck because the engine controller 2 does not receive a communication request of the GW gateway 3, the PEPS controller 1 cannot control the first relay KA1 to suck, and the conditions of power-on interruption, dragging suspension and vehicle starting failure of the starter 5 can occur. According to the vehicle cold start INCA data monitoring, the lowest pull-down voltage time of the storage battery 6 in the starting process is short, and the voltage of the storage battery 6 is increased immediately after the short time. Therefore, the control method comprises the steps that a communication maintaining module 2a used for continuously maintaining a receiving signal with a preset time value one after a starting request command is interrupted is arranged in an engine controller 2, a communication recovery module 1a used for recovering communication within a preset time value two is arranged in a PEPS controller 1, when the PEPS controller 1 and a GW gateway 3 stop communicating, the communication maintaining module 2a and the communication recovery module 1a start to work, the PEPS controller 1 recovers communication within the preset time value two, the engine controller 2 keeps communication within the preset time value one, and preferably, the preset time value two is set to be 30 ms; the first preset time value is set to be 100ms, and the first preset time value and the second preset time value are obtained through numerous experimental tests, so that the success rate of starting the vehicle is improved, and the engine controller 2 can receive the starting request signal sent by the GW gateway 3 within effective time when the PEPS controller 1 continues to send the starting request signal after the interruption and recovery of the PEPS controller 1, so that the power on the starter 5 cannot be interrupted and the dragging cannot be stopped when the PEPS controller 1 and the GW gateway 3 stop communication, the vehicle can also be started successfully under an extremely cold condition, and the starting success rate is improved; meanwhile, the vehicle body controller can also monitor that the PEPS controller stops communication, and when the fault is monitored, the vehicle body controller can control the alarm 9 to give an alarm, so that a driver can clearly understand the starting condition of the vehicle, and repeated ignition is avoided.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (10)
1. A cold start control method for a vehicle, characterized by comprising:
when the signal transmitted by the PEPS one-key starting key (7) and the TCU (4) is judged to meet the starting condition, the PEPS controller (1) sends a starting request signal to the engine controller (2) through the GW gateway (3), the engine controller (2) controls the second relay KA2 to suck, the PEPS controller (1) controls the first relay KA1 to suck, and the storage battery (6) and the starter (5) are connected through the simultaneous suction of the first relay KA1 and the second relay KA 2;
when the PEPS controller (1) and the GW gateway (3) stop communicating, the engine controller (2) continues to receive signals within a preset time value I; the PEPS controller (1) continues to send a starting request signal to the engine controller (2) after communication is recovered within a second preset time value, the first relay KA1 and the second relay KA2 are kept simultaneously attracted until the starter (5) successfully drags the engine to start, and the first preset time value is larger than the second preset time value.
2. A vehicle cold start control method according to claim 1, characterized in that the start condition is judged to be satisfied when the PEPS key start button (7) transmits a pressed signal and the vehicle gear acquired by the TCU (4) is the P gear.
3. The cold start control method of a vehicle according to claim 1, characterized in that the preset time value one is set to 80-120 ms.
4. The cold start control method of a vehicle according to claim 3, characterized in that the preset time value two is set to 20-40 ms.
5. The cold start control method of the vehicle according to any one of claims 1-4, characterized in that the first relay KA1 comprises a coil and a normally open switch connected between the starter (5) and the vehicle-mounted battery (6), the second relay KA2 comprises a coil and a normally open switch, one end of the coil of the first relay KA1 is connected with the PEPS controller (1), the other end is connected with one end of the normally open switch of the second relay KA2, the other end of the normally open switch of the second relay KA2 is connected with the vehicle-mounted battery (6), one end of the coil of the second relay KA2 is connected with the engine controller (2), and the other end of the coil of the second relay KA2 is connected with the vehicle-mounted battery (6).
6. A vehicle cold start control device comprises an engine controller (2), a signal acquisition unit (10) for acquiring a vehicle gear signal and an ignition switch state signal, and a first relay KA1 connected between a vehicle-mounted storage battery (6) and a starter (5), and is characterized in that a second relay KA2 is further connected in series between the first relay KA1 and the vehicle-mounted storage battery (6), the vehicle cold start control device further comprises a GW gateway (3) and a PEPS controller (1), the second relay KA2 is connected with the engine controller (2), the first relay KA1 is connected with the PEPS controller (1), the PEPS controller (1) is connected with the signal acquisition unit (10), the PEPS controller (1) is connected with the engine controller (2) through the GW gateway (3), the engine controller (2) is provided with a communication maintaining module (2a) for continuously maintaining a preset time value and a received signal after a start request command is interrupted ) The PEPS controller (1) is provided with a communication recovery module (1a) for recovering communication within a preset time value two, the preset time value two is smaller than a preset time value one, the PEPS controller (1) is used for sending a starting request signal to the GW gateway (3) and controlling the first relay KA1 to suck when a signal collected by the signal collection unit (10) meets a vehicle starting condition, and the engine controller (2) is used for controlling the second relay KA2 to suck according to the starting request signal sent by the GW gateway (3).
7. The vehicle cold start control device according to claim 6, characterized in that the signal acquisition unit comprises a TCU (4) for acquiring the current gear signal of the gear shift lever and a PEPS one-key start key (7) for acquiring the state signal of the ignition switch, and the TCU (4) and the PEPS one-key start key (7) are both connected with the PEPS controller (1).
8. The vehicle cold start control apparatus according to claim 7, further comprising a CAN bus (11), the TCU (4) and the PEPS controller (1) being connected through the CAN bus (11), the PEPS controller (1) being connected with the GW gateway (3) through the CAN bus (11).
9. The cold start control device of a vehicle according to any one of claims 6 to 8, characterized in that the first relay KA1 comprises a coil and a normally open switch connected between the starter (5) and the vehicle-mounted battery (6), the second relay KA2 comprises a coil and a normally open switch, one end of the coil of the first relay KA1 is connected with the PEPS controller (1), the other end is connected with one end of the normally open switch of the second relay KA2, the other end of the normally open switch of the second relay KA2 is connected with the vehicle-mounted battery (6), one end of the coil of the second relay KA2 is connected with the engine controller (2), and the other end of the coil of the second relay KA2 is connected with the vehicle-mounted battery (6).
10. A vehicle cold start control device according to any one of claims 6-8, characterized in that the vehicle cold start control device further comprises a vehicle body controller (8) and an alarm (9) connected to the vehicle body controller (8), the vehicle body controller (8) being connected to the PEPS controller (1).
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| Publication number | Priority date | Publication date | Assignee | Title |
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