CN103967679B - Starter control system controls method and the starter control system thereof of starter motor - Google Patents

Abstract

The present invention provides a starter control system, comprising a one-key start control unit, an engine management unit and a start relay connected to each other; the one-key start control unit is connected with the first input terminal of the start relay, and is used to control the start relay The first input end is powered on and off; the engine management unit is connected to the second input end of the starting relay, and is used to control the second input end of the starting relay to be powered on and off; the first input end of the starting relay and After the second input terminal is powered on, the starting relay is closed, and the starting relay is closed to start the starter. The starter control system controls the starter relay through two units, which reduces the probability of control errors and improves the safety performance of the vehicle; the invention also proposes a method for the starter control system to control the starter.

Description

Method for controlling starter by starter control system and starter control system thereof

technical field

The invention relates to a starter control technology, in particular to a method for a starter control system to control a starter and a starter control system thereof.

Background technique

The engine system is the heart of the car, providing power for the car to walk, which is related to the power, economy and environmental protection of the car; the engine is started by the starter, and the start of the starter is controlled by a relay; the start of the traditional car engine is started by the driver. The key is directly controlled, and the driver assumes the responsibility of ensuring safe starting, for example, the driver will confirm whether the transmission is in neutral, whether the clutch is disengaged, and whether there are pedestrians in front of the vehicle.

With the continuous development of technology in the automotive field, most of the current cars are equipped with a one-key start control unit. The process of the one-key start control unit controlling the starter is: Safety, if it is detected that the starting is safe, the drive unit of the one-button start control unit outputs a driving signal to close the starting relay, and the starting relay is closed to make the power supply supply power to the starter, and the powered starter drives the engine to start.

The one-button start control unit simplifies the starting process of the starter, and at the same time makes the start of the starter more intelligent, but using the one-button start control unit to control the starter separately may have the following problems: If the internal RAM of the one-button start control unit (The full name of RAM in English is Random Access Memory, and the full name of RAM in Chinese is Random Access Memory) failure, or a sudden failure of the output stage of the starter drive, etc., may cause the starter to be powered on suddenly, because the starter is powered on by mistake at this time. Therefore, the starter needs to be disconnected; however, the one-button start control unit cannot automatically disconnect the starter relay due to a fault, thereby causing safety problems.

Contents of the invention

In order to solve the internal RAM failure in the one-button start control unit in the prior art, or the sudden failure of the starter drive output stage, etc., causing the starter to be powered on by mistake, it is necessary to disconnect the starter; The starting relay cannot be disconnected automatically, which further causes safety problems. The invention provides a starter control system which can solve the problem that the starter cannot be disconnected after the starter is activated by mistake in a one-button start control unit failure.

On the one hand, the starter control system in the embodiment of the present invention includes a one-button start control unit, an engine management unit and a start relay connected to each other;

The one-button start control unit is connected with the first input terminal of the starter relay, and is used to control the power-on and power-off of the first input terminal of the starter relay, and after receiving the signal to start the engine, the first drive signal is sent to make the starter relay Power on the first input terminal;

The engine management unit is connected to the second input terminal of the starting relay, and is used to control the power-on and power-off of the second input terminal of the starting relay, and after receiving the signal to start the engine, sends a second driving signal to make the second input terminal of the starting relay Power on the input;

After the first input terminal and the second input terminal of the starting relay are powered on, the starting relay is closed, the starting relay is connected to the starter, and the starting relay is closed to start the starter.

Beneficial effects: Compared with the solution in the prior art which uses a one-key start control unit to separately control the closing and opening of the starting relay; Disconnect, even if one of the one-button start control unit and the engine management unit fails, causing one end of the start relay to be powered on by mistake, it can also control the other end of the start relay to cut off the power to disconnect the start relay, so as to avoid closing the start relay by mistake Start the engine, causing a vehicle accident.

Further, in the starter control system of the present invention, the one-button start control unit includes:

a first neutral signal receiving unit, configured to receive a neutral signal collected by a neutral sensor and send it to the first control unit;

The first control unit is configured to receive the brake pedal signal and the neutral signal forwarded by the first neutral signal receiving unit, and issue a first control command when receiving the neutral signal and the brake pedal depression signal;

a first drive unit, configured to send a first drive signal according to a first control instruction;

The engine management unit includes:

The second neutral signal receiving unit is used to receive the neutral signal collected by the neutral sensor and send it to the second control unit;

The second control unit is configured to receive the brake pedal signal and the neutral signal forwarded by the second neutral signal receiving unit, and issue a second control command when receiving the neutral signal and the brake pedal depression signal;

The second driving unit is configured to send out a second driving signal according to a second control command.

The starter control system described in this solution adds a first neutral signal receiving unit and a second neutral signal receiving unit, which can receive the neutral signal collected by the neutral sensor, and the first control unit and the second control unit only receive the vehicle When the neutral signal and the signal of the brake pedal are stepped on, the starter relay is controlled to be closed to start the starter. Even if the starter relay is closed by mistake (wrongly closing the starter relay will cause the vehicle to run and cause an accident), it is also because the vehicle is in the neutral state. And when the brake pedal is stepped on, the vehicle will not move forward, further avoiding vehicle safety accidents.

Further, in the starter control system of the present invention, the one-button start control unit and the engine management unit are respectively connected to the brake pedal switch through hard wires, and the one-button start control unit and the engine management unit are controlled by the vehicle body. unit connection;

The brake pedal depression signal comes from the hard wire or from the vehicle body control unit.

Further, in the starter control system according to the present invention, the first neutral signal receiving unit includes a first resistive element and a second resistive element, one end of the first resistive element is grounded, and the other end is used to communicate with neutral sensor connection;

One end of the second resistive element is connected to the first preset voltage, and the other end is used to connect with the neutral sensor.

Furthermore, in the starter control system of the present invention, the first drive unit includes a first MOS transistor, the gate of the first MOS transistor is connected to the first control unit, and the drain is connected to the second preset voltage , the source is connected to the first input end of the start relay;

The second drive unit includes a second MOS transistor, the gate of the second MOS transistor is connected to the second control unit, the drain is connected to the second input terminal of the starting relay, and the source is grounded.

Further, in the starter control system of the present invention, the one-button start control unit further includes:

The first fault detection unit is used to detect whether the first drive unit is faulty, and when it is detected that the first drive unit is not faulty, send the information that the first drive unit has no fault to the first control unit and the second control unit.

The starter control system described in this solution can detect whether the first drive unit is faulty, and send the detected fault information to the second control unit, realizing information sharing, so as to better control the starting relay.

Further, in the starter control system of the present invention, the engine management unit further includes:

The second fault detection unit is used to detect whether the second drive unit is faulty, and when it is detected that the second drive unit is not faulty, send the second drive unit no fault information to the first control unit and the second control unit;

The first control unit is also configured to issue the first control when receiving the second drive unit no-fault information, the brake pedal depression signal, the neutral signal forwarded by the first neutral signal receiving unit, and the first drive unit no-fault information. instruction;

The second control unit is also configured to issue a second control when receiving the first drive unit no-fault information, the brake pedal depression signal, the neutral signal transmitted by the second neutral signal receiving unit, and the second drive unit no-fault information. instruction.

The starter control system described in this solution can detect whether the second drive unit is faulty, and send the detected fault information to the first control unit, realizing information sharing, so as to better control the starting relay.

Further, the starter control system of the present invention further includes an engine anti-theft authentication unit set in the engine management unit, and a timing unit set in the one-button start control unit and/or the engine management unit;

The engine anti-theft authentication unit is used to perform engine anti-theft authentication when the starting relay is closed or after starting;

The timing unit is used for timing the engine anti-theft authentication time and the working time of the starter;

If the anti-theft authentication time of the engine reaches the first preset time and the engine anti-theft authentication is not completed, control the first drive unit and/or the second drive unit to disconnect the start relay;

If the working time of the starter reaches the second preset time, the first driving unit and/or the second driving unit are controlled to turn off the starting relay to turn off the starter.

The starter control system described in this solution can judge whether the engine anti-theft certification is overtime, and in the overtime situation, disconnect the starter relay, so as to avoid the failure of the vehicle due to engine problems.

Further, in the starter control system of the present invention, the one-button start control unit is provided with a third fault detection unit and/or the engine management unit is provided with a fourth fault detection unit;

The third fault detection unit and/or the fourth fault detection unit are used to detect the fault of the starter after the starting relay is disconnected, and send and store the fault information of the starter when a fault of the starter is detected.

The starter control system described in this solution detects the starter motor fault after the starter relay is disconnected, so as to avoid vehicle safety accidents caused by the starter motor fault.

In order to solve the problem of the internal RAM (memory) in the one-button start control unit of the prior art, or the sudden failure of the starter drive output stage, etc., it may cause the starter to be powered on by mistake, so it is necessary to disconnect the starter; but the one-button The starting control unit cannot automatically disconnect the starting relay due to a fault, thereby causing a safety problem. The present invention also provides a method for controlling the starter by the starter control system. The starter control system is the starter control system described above. system;

The control method of the starter includes the following steps:

A. Obtain the signal to start the engine;

B. The one-button start control unit sends out the first drive signal to power on the first input terminal of the starter relay according to the signal to start the engine, and the engine management unit sends out the second drive signal to power on the second input terminal of the starter relay according to the signal to start the engine to close the start relay.

Beneficial effects: Compared with the solution in the prior art that the one-key start control unit alone controls the closing and opening of the starting relay; the starter control system of the present invention controls the starter by sending the first drive signal and the second drive signal to Control the start relay to close, even if one of the second drive signal and the second drive signal is a false drive signal, causing one end of the start relay to be powered on by mistake, the other drive signal can be cut off to de-energize the other end of the start relay. Turn on the starting relay to avoid vehicle accidents caused by starting the engine by mistakenly starting the relay.

Further, in the method for controlling the starter by the starter control system of the present invention, after step A and before step B, the following steps are further included:

Detect whether the vehicle is in neutral, and detect whether the brake pedal is depressed;

If it is detected that the vehicle is in a neutral state and the brake pedal is depressed, step B is executed.

In this program, before executing step B, first confirm that the vehicle is in neutral and the brake pedal is depressed, so that even if the first drive signal and the second drive signal are false signals and the start relay is closed, the vehicle is in neutral and the brake pedal is depressed. Under this condition, it will not cause the vehicle to travel, further avoiding vehicle safety accidents.

Further, the method for controlling the starter by the starter control system of the present invention further includes the following steps:

Detect whether the vehicle is in neutral, detect whether the brake pedal is stepped on, detect whether the first drive unit is faulty and send the detection result to the engine management unit, and detect whether the second drive unit is faulty and send the detection result to the one-button start control unit ;

If it is detected that the vehicle is in neutral, the brake pedal is depressed, the engine management unit receives the information that the first drive unit has no fault, and the one-key start control unit receives the information that the second drive unit has no fault, then step B is executed.

In this solution, before executing step B, first confirm that the vehicle is in neutral, the brake pedal is stepped on, and further check the faults of the first drive unit and the second drive unit to reduce the probability of vehicle accidents.

Further, in the method for controlling the starter of the starter control system of the present invention, after the starter relay is closed, periodically detect whether the first drive unit is faulty and send the detection result to the engine management unit;

If the engine management unit does not periodically receive the no-fault information of the first drive unit, then cut off the second drive signal to disconnect the start relay;

After the starting relay is closed, periodically detect whether there is a fault in the second drive unit and send the detection result to the one-button start control unit;

If the one-button start control unit does not periodically receive the no-fault information of the second drive unit, it cuts off the first drive signal to disconnect the start relay.

In this solution, after the starting relay is closed, further check whether the first drive unit and the second drive unit are faulty, and if there is a fault, turn off the starting relay to avoid damage to the vehicle caused by the fault of the first drive unit and the second drive unit. safe question.

Further, in the method for controlling the starter of the starter control system of the present invention, when the starter relay is closed or after it is closed, the anti-theft authentication of the engine is performed and timed, and the working time of the starter is timed;

If the anti-theft authentication time of the engine reaches the first preset time and the engine anti-theft authentication is not completed, then cut off the first driving signal and/or the second driving signal to disconnect the starting relay;

If the working time of the starter reaches the second preset time, the first driving unit and/or the second driving unit disconnect the starting relay to disconnect the starter.

This solution performs anti-theft authentication on the engine when the starter relay is closed or after it is closed, and disconnects the starter relay when the authentication is overtime, so as to avoid safety accidents caused by engine problems.

Further, in the method for controlling the starter by the starter control system of the present invention, if the engine anti-theft authentication is successful, an indication signal indicating that the engine anti-theft authentication is successful is sent and the engine speed is detected;

If the engine speed is greater than the preset value, then cut off the first driving signal and/or the second driving signal to turn off the starting relay.

After the engine anti-theft certification is successful, this program detects whether the engine speed meets the preset value. If it meets the requirements, it means that the engine starts normally. Vehicle fire accident.

Further, in the method for controlling the starter of the starter control system of the present invention, if the engine anti-theft authentication fails, an engine lock signal is sent;

The first driving signal and/or the second driving signal are cut off according to the engine lock signal to turn off the starter relay.

In this solution, after the engine certification fails, the starter relay is disconnected to avoid safety accidents caused by engine problems.

Further, the method for controlling the starter by the starter control system of the present invention further includes the following steps:

After disconnecting the starting relay, carry out fault detection on the starter;

If there is a fault in the starter, send out the fault message of the starter and save it.

This scheme can monitor the starter at all times, and when the starter fails, the fault information can be obtained so as to deal with it in time.

Description of drawings

Fig. 1 is a block diagram of Embodiment 1 of the starter control system provided by the present invention.

Fig. 2 is a block diagram of Embodiment 2 of the starter control system provided by the present invention.

Fig. 3 is a block diagram of Embodiment 3 of the starter control system provided by the present invention.

Fig. 4 is a block diagram of Embodiment 4 of the starter control system provided by the present invention.

Fig. 5 is a flow chart of Embodiment 5 of the method for controlling the starter provided by the starter control system of the present invention.

Fig. 6 is a flow chart of Embodiment 6 of the method for controlling the starter provided by the starter control system of the present invention.

Fig. 7 is a flow chart of Embodiment 7 of the method for controlling the starter provided by the starter control system of the present invention.

Fig. 8 is a flow chart of Embodiment 8 of the method for controlling the starter provided by the starter control system provided by the present invention.

Fig. 9 is a flow chart of Embodiment 9 of a method for controlling a starter provided by the starter control system of the present invention.

Fig. 10 is a flow chart of Embodiment 10 of the method for controlling the starter provided by the starter control system of the present invention.

Among them, 1. One-button start control unit; 2. Engine management unit; 3. Start relay; 4. Body control unit; 5. Starter; 6. Neutral sensor; 101. First neutral signal receiving unit; 102. First Drive unit; 103, first fault detection unit; 104, third fault detection unit; 201, second neutral signal receiving unit; 202, second drive unit; 203, second fault detection unit; 204, fourth fault detection unit .

detailed description

In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

In the description of the present invention, it should be noted that, unless otherwise specified and limited, the term "connection" should be understood in a broad sense, which can be a direct connection or an indirect connection through an intermediary, or an internal connection between two components. connectivity. The terms "first drive unit" and "second drive unit" are components that can send a drive signal to close the start relay after receiving specific information; the term "power on" means that there is current flowing, and "power off" means that The meaning of power-on is opposite, and the specific meanings of the above terms in the present invention can be understood in specific situations.

The starter control system of the present invention includes a one-button start control unit, an engine management unit and a start relay connected to each other;

The one-button start control unit is connected with the first input terminal of the starter relay, and is used to control the power-on and power-off of the first input terminal of the starter relay, and after receiving the signal to start the engine, the first drive signal is sent to make the starter relay Power on the first input terminal;

The engine management unit is connected to the second input terminal of the starting relay, and is used to control the power-on and power-off of the second input terminal of the starting relay, and after receiving the signal to start the engine, sends a second driving signal to make the second input terminal of the starting relay Power on the input;

After the first input terminal and the second input terminal of the starting relay are powered on, the starting relay is closed, the starting relay is connected to the starter, and the starting relay is closed to start the starter.

The method for controlling the starter of the starter control system of the present invention and the closing of the starting relay in the starter control system are controlled together by two different driving signals. If one of the driving signals is missing, the starting relay cannot be closed. If the drive unit of a drive signal fails, causing one end of the starter relay to be energized, then the other end of the start relay can be de-energized through the drive unit that sends out another drive signal, so as to avoid starting the starter by mistake.

The vehicle body control unit described in the present invention can share the signals transmitted on the vehicle internal network with the one-button start control unit and the engine management unit, such as brake pedal status signals, etc.; The interactive information between the start control unit and the engine management unit, such as the fault information of the drive unit, etc.; the first neutral signal receiving unit and the second neutral signal receiving unit in the following embodiments are only a detailed example, and can be adjusted according to the actual situation. The existing technology is used for replacement; the first driving unit and the second driving unit in the following embodiments are only a detailed example, and existing technology can be used for replacement according to actual conditions.

The present invention is further described by way of examples below.

Example 1

As shown in Figure 1, the starter control system described in this embodiment is applied to a vehicle, wherein the one-button start control unit 1 and the engine management unit 2 are connected through the body control unit, specifically the one-button start control unit 1 Connect with the body control unit 4 through BCAN (the full name of BCAN in English is BodyControllerAreaNetwork, and the full name of Chinese is Body Controller Area Network), and the engine management unit 2 is connected with PCAN (the full name of PCAN in English is PowerControllerAreaNetwork, and the full name of Chinese is Power Controller Area Network) The body control unit 4 is connected, wherein the body control unit 4 can complete the control of the electrical modules on the vehicle according to the driver's operation instructions, such as radio, GPS (wherein the English full name of GPS is GlobalPositioningSystem, and the Chinese full name is Global Positioning System. System) navigation, etc. At the same time, a communication module is integrated in the body control unit, so that information sharing can be completed between the one-button start control unit and the engine management unit.

The one-button start control unit 1 described in this implementation can obtain the engine start signal and transmit it to the engine management unit 2 through the vehicle body control unit. As another embodiment, the start engine signal obtained by the one-key start control unit 1 can also be obtained by The hard line is transmitted to the engine management unit, and the one-button start control unit is connected to the first input end of the start relay (the upper end of the start relay shown in the figure) through the signal line; when the engine needs to be started, the driver triggers the engine start button ( or through other vehicle starting methods) to the one-button start control unit 1 to send a signal to start the engine, and the one-button start control unit outputs the first driving signal to the upper end of the starting relay 3 according to the signal, wherein the first driving signal is a current signal.

The engine management unit 2 described in this embodiment is connected to the second input terminal of the start relay (the lower end of the start relay shown in the figure) through a signal line. After receiving the signal to start the engine forwarded by the body control unit 4, the engine management unit 2 Output the second driving signal to the lower end of the starting relay according to this signal, wherein the second driving signal is also a current signal; when there are current signals at the upper and lower ends of the starting relay, the starting relay will use the electromagnetic effect to make the switch of the starting relay Closed, after the switch of the starting relay is closed, the second preset voltage V2 shown in the figure drives the starter 5 to start, wherein the size of the second preset voltage V2 is provided according to the power of the starter to ensure that the starter starts and the starter starts Finally, the engine is driven to run to complete the start of the engine; when the starter needs to be turned off, the one-key start control unit and the engine management unit only need to cut off one of the first drive signal and the second drive signal, even if the one-key start control unit and engine One of the faults in the management unit, can also be disconnected by another control starter.

Example 2

As shown in Figure 2, the one-button start control unit 1 in this implementation specifically includes a first neutral signal receiving unit 101, a first drive unit 102 and a first control unit (not shown in the figure), the first neutral signal The receiving unit is connected to the vehicle neutral sensor 6 for receiving the neutral signal collected by the neutral sensor and forwarding it to the first control unit; the first neutral signal receiving unit described in this embodiment includes a first resistor R1 and a second resistor R2, One end of the first resistor is grounded, and the other end is connected to the neutral sensor; one end of the second resistor is connected to the first preset voltage V1, the first preset voltage is set according to actual needs, and the other end is connected to the neutral sensor 4; When a resistor R1 terminal receives a high-level signal, and the second resistor R terminal receives a low-level signal, it indicates that the vehicle transmission is in a neutral state; the first control unit is respectively connected with the first neutral signal receiving unit 101, the second A drive unit 102 is connected to receive the brake pedal signal and the neutral signal forwarded by the first neutral signal receiving unit, and send out the first control command when receiving the neutral signal and the brake pedal depression signal. The first drive unit is used to send the first drive signal according to the first control command to control the power-on of the first input terminal (the upper end in the figure) of the start relay; the first drive unit includes a first MOS tube (the English of the MOS tube is The full name is Metal-Oxide-Semiconductor Transistor, the Chinese name is Metal Oxide Semiconductor Field Effect Transistor) M1, the gate of the MOS transistor is connected to the first control unit, the drain is connected to the second preset voltage V2, and the source is connected to the start relay The first input terminal; wherein the first control instruction is used to control the opening and closing of the MOS transistor M1, and the second preset voltage V2 is set according to actual needs. When the first driving signal needs to be output, the first control unit sends a first control command to control the conduction of the MOS transistor M1, and the current signal of the MOS transistor M1 flows through the upper end of the starting relay, and the upper end of the starting relay is powered on. When the upper end of the starting relay needs to be powered off, the first control unit cuts off the first control command, and then the MOS tube M1 is turned off to complete the power off on the upper end of the starting relay; in addition, the first drive unit can also be realized by using other existing switches, as long as it can Just control the power on and off of the upper end of the start relay.

The engine management unit specifically includes a second neutral signal receiving unit 201, a second drive unit 202 and a second control unit (not shown in the figure), and the second neutral signal receiving unit is connected with the vehicle neutral sensor for receiving The neutral signal collected by the neutral sensor is forwarded to the second control unit; the structure of the second neutral signal receiving unit in this embodiment is the same as that of the first neutral signal receiving unit in the one-key start control unit, and will not be described in detail here. The second control unit is connected with the second neutral signal receiving unit 201 and the second drive unit 202 respectively, for receiving the brake pedal signal and the neutral signal transmitted by the second neutral signal receiving unit, and when receiving the neutral signal and the brake pedal When the signal is depressed, a second control instruction is issued. The second drive unit is used to send a second drive signal according to the second control command to control the power-on of the second input terminal (the lower end in the figure) of the start relay; the second drive unit includes a second MOS transistor M2, and the MOS The gate of the tube is connected to the second control unit, the drain is connected to the second input terminal of the starting relay, and the source is grounded; wherein the second control command is used to control the opening and closing of the MOS tube M2. When it is necessary to output the second driving signal, the second control unit sends a second control command to control the conduction of the MOS transistor M2, and the current signal of the MOS transistor M2 flows through the lower end of the starting relay to complete the power-on of the lower end of the starting relay. When the lower end of the starting relay needs to be powered off, the second control unit cuts off the second control command, and then the MOS tube M2 is turned off to complete the power off on the lower end of the starting relay; similarly, the second drive unit can also use other existing switches, as long as it can control Just power on and off the lower end of the starter relay.

In this embodiment, the first control unit only sends out the first control command when receiving the brake pedal depressing signal and the neutral signal transmitted by the first neutral receiving unit; The second control instruction is issued only when the neutral signal transmitted by the second neutral receiving unit is transmitted. At this time, the vehicle is in the neutral state and the brake pedal is depressed. Even if the first control unit and the second control unit miscontrol the starter to start, The vehicle will not move, which ensures driving safety; the signal of the brake pedal can be transmitted to the first control unit and the second control unit through the gateway (body control unit), or can be transmitted to the first control unit through a hard line and a second control unit.

Example 3

As shown in Figure 3, the difference between this embodiment and Embodiment 2 is: a first fault detection unit 103 is added to the one-button start control unit, and a second fault detection unit 203 is also added to the engine management unit; A fault detection unit is used to detect whether the first drive unit is faulty and when it is detected that the first drive unit is fault-free, it sends the first drive unit fault-free information to the first control unit and the second control unit, and the fault of the first drive unit Specifically refers to the open circuit and short circuit of the MOS transistor M1. The second fault detection unit is used to detect whether the second drive unit is faulty and when it detects that the second drive unit is not faulty, it sends the second drive unit no fault information to the first control unit and The failure of the second control unit and the second drive unit specifically refers to the open circuit and short circuit of the MOS transistor M2.

In this embodiment, the first control unit is also used to send out the second drive unit when it receives the second drive unit no-fault information, the brake pedal depressing signal, the neutral signal transmitted by the first neutral signal receiving unit, and the first drive unit no-fault information. A control instruction; similarly, the second drive unit sends out the second drive unit only when it receives the first drive unit no-fault information, the brake pedal depressing signal, the neutral signal transmitted by the second neutral signal receiving unit and the second drive unit no-fault information. Control instruction. A short circuit between the first drive unit and the second drive unit may cause the start relay to be turned on. Therefore, through the fault detection of the first drive unit and the second drive unit, the first control unit and the second control unit can grasp the fault information of the drive unit in time. When the first drive unit and the second drive unit fail, the starter relay is disconnected to avoid false closing of the starter relay, that is, to avoid false start of the starter, thereby ensuring vehicle safety.

Example 4

As shown in Figure 4, the difference between this embodiment and Embodiment 3 is that: the one-button start control unit also includes a third fault detection unit 104, and the engine management unit also includes a fourth fault detection unit 204, usually After the starter drives the engine to start, the starter needs to be cut off. After the starter is cut off, the third fault detection unit and the fourth detection unit detect whether the starter is faulty, and save the starter fault information in its own non-volatile memory. At the same time, it is sent to the internal network of the vehicle for the driver to check for timely processing; one of the indicators of starter failure is leakage.

The engine management unit in this embodiment includes an engine anti-theft authentication unit and a timing unit, the engine anti-theft authentication unit is used for engine anti-theft authentication when the starter relay is closed or after starting; the timing unit is used for the starter system anti-theft authentication time and the working time of the starter; if the engine anti-theft authentication time reaches the first preset time and the engine anti-theft authentication is not completed, the second drive unit disconnects the starting relay; if the starter working time reaches the second preset time, The first drive unit and/or the second drive unit turns off the starter relay to turn off the starter. In addition, a timing unit can also be set in the one-key start control unit. When the engine management unit performs engine anti-theft authentication, the information of the engine anti-theft authentication is sent to the one-key start control unit through the body control unit, and the timing unit in the one-key start control unit Timing the engine anti-theft authentication time and the starter working time, if the engine anti-theft authentication time reaches the first preset time and the engine anti-theft authentication is not completed, the first drive unit can also disconnect the starter relay; the first preset time Set according to the actual situation, such as 5 seconds (s), 10 seconds (s), etc. The second preset time is the maximum working time of the starter, that is, the time from when the starter relay is turned on to when it is turned off. The second preset time is generally is 20 seconds (s), and the second preset time is greater than the first preset time.

Engine anti-theft certification overtime is an indicator of engine failure, so the starter control system in this embodiment cuts off the starter relay to disconnect the engine when the engine anti-theft certification is overtime, so as to avoid accidents after the vehicle starts.

In the embodiment of the present invention, a method for controlling the starter by the starter control system is also proposed. The starter control system may be the starter control system described in any one of Embodiment 1 to Embodiment 4. The starter The control method includes the following steps:

A. Obtain the signal to start the engine;

B. The one-button start control unit sends out the first drive signal to power on the first input terminal of the starter relay according to the signal to start the engine, and the engine management unit sends out the second drive signal to power on the second input terminal of the starter relay according to the signal to start the engine to close the start relay.

The method for controlling the starter of the starter control system of the present invention will be described below through specific embodiments.

Example 5

As shown in Figure 5, the control method of the starter comprises the following steps:

1011. Obtain a signal to start the engine;

1012. The one-button start control unit sends out the first drive signal according to the signal to start the engine to power on the first input terminal of the start relay;

1013. The engine management unit sends out a second drive signal according to the signal to start the engine to power on the second input terminal of the start relay.

Wherein, the signal to start the engine described in step 1011 is provided by the driver and obtained by the one-key start control unit, and the one-key start control unit sends the signal to start the engine to the engine management unit; the first drive signal and the second The driving signal is a current signal, which can be sent simultaneously or in time; after the first input terminal and the second input terminal of the starting relay are powered on, the switch of the starting relay is closed, and the starter is energized.

In this embodiment, the one-button start control unit and the engine management unit jointly control the closing of the starting relay, which is equivalent to providing double insurance for the closing of the starting relay and improving the safety of starting the starter; in addition, the step 1012 described in this embodiment and 1013 can be carried out at the same time or time-sharing.

Example 6

As shown in FIG. 6, the control method for the starter described in this embodiment includes the following steps:

2011. Obtain the signal to start the engine;

2012. Detect whether the vehicle is in neutral, and detect whether the brake pedal is stepped on;

If it is detected that the vehicle is in a neutral state and the brake pedal is depressed, step 2013 is performed, the one-button start control unit sends a first drive signal according to the signal to start the engine to power up the first input terminal of the start relay, and step 2014 is performed, the engine The management unit sends out a second drive signal according to the signal to start the engine to energize the second input terminal of the start relay.

After obtaining the signal to start the engine, detect the state of the vehicle transmission and the state of the brake pedal. Only when the vehicle is in neutral and the brake pedal is depressed, the start relay is controlled to close. At this time, because the vehicle is in neutral and the brake pedal is depressed Even if the starter relay is mistakenly closed, it will not cause the vehicle to start, avoiding safety hazards caused by mistaken closure.

Example 7

As shown in Figure 7, after obtaining the signal to start the engine, step 20111 is also performed to detect whether the first drive unit is faulty and send the detection result to the engine management unit, and to perform step 20112 to detect whether the second drive unit is faulty and send The detection result is sent to the one-button start control unit;

If the engine management unit receives the no-fault information of the first drive unit, and the one-key start control unit receives the no-fault information of the second drive unit, execute steps 2013 and 2014.

If the one-button start control unit does not receive the detection result information of the second drive unit or receives the fault information, then step 2013 is not performed; if the engine management unit does not receive the detection result information of the first drive unit or receives the fault information, Step 2014 is also not performed.

Wherein step 20111 and step 20112 can be performed at the same time or in time-sharing, preferably at the same time, so as to achieve synchronous control of the starting relay.

Example 8

As shown in Figure 8, after the first input terminal and the second input terminal of the starting relay are powered on and the starting relay is closed, the following steps are also performed:

301. Periodically detect whether the first drive unit is faulty and send the detection result to the engine management unit;

302. Periodically detect whether the second drive unit is faulty and send the detection result to the one-key start control unit;

303. If the engine management unit does not periodically receive the no-fault information of the first drive unit, then cut off the second drive signal to disconnect the start relay; if the one-button start control unit does not periodically receive the no-fault information of the second drive unit information, then cut off the first driving signal to disconnect the starting relay.

The fault detection cycle of the first drive unit and the fault detection cycle of the second drive unit are determined according to actual conditions, and there is no limitation here, for example, they may be detected every 10 seconds (s). The engine management unit does not periodically receive the no-fault information of the first drive unit, including the failure of the first drive unit and the no-fault of the first drive unit, but there is a problem in the information transmission, which leads to no receipt; the same key-start control unit has no periodicity The non-faulty information of the second drive unit received permanently also includes the failure of the second drive unit and the failure of the second drive unit but there is a problem in the information transmission, resulting in no receipt. The fault detection result of the first drive unit is forwarded to the engine management unit through the body control unit, and the fault detection result of the second drive unit is forwarded to the one-button start control unit through the body control unit; the first drive signal and the second drive signal When one is cut off, the starting relay is disconnected. When the starting relay needs to be cut off, the first driving signal and the second driving signal can be cut off at the same time, or they can be cut off separately.

After the starting relay is closed, periodically perform troubleshooting on the first drive unit and the second drive unit, which is beneficial to eliminate potential safety hazards of the vehicle.

Example 9

As shown in FIG. 9 , when the starter relay is closed or after it is closed, the following steps are also included: 401, performing anti-theft authentication and timing of the engine, and timing the working time of the starter;

402. If the engine anti-theft authentication time reaches the first preset time and the engine anti-theft authentication is not completed, cut off the first driving signal and/or the second driving signal to disconnect the starting relay;

405. If the working time of the starter reaches the second preset time, the first driving unit and/or the second driving unit disconnect the starting relay to disconnect the starter.

The anti-theft authentication of the engine is completed through the engine anti-theft authentication unit in the engine management unit. The first preset time is set according to the regular authentication time of the engine. The first preset time is different for different engines, and there is no limit here; The preset time is the maximum working time of the starter, that is, the time from when the engine start relay is turned on to when it is turned off. The second preset time is generally 20 seconds (s), and the second preset time is longer than the first preset time.

If the engine anti-theft authentication time expires, it means that there is a problem with the engine anti-theft authentication, which may be due to authentication failure or other problems. At this time, cut off the start relay to avoid safety problems.

Further, if the engine anti-theft authentication is successful, the following steps are also included:

403. Send an indication signal indicating that the engine anti-theft authentication is successful and detect the engine speed;

4031. If the engine speed is greater than a preset value, cut off the first driving signal and/or the second driving signal to turn off the starting relay.

Wherein, sending out the indication signal that the engine anti-theft authentication is successful is used to prompt that the engine fuel injection ignition can be executed. The preset value in this embodiment is 500 rpm. Of course, the preset value can be set according to actual needs, and there is no limit here; when the engine speed If it is greater than 500 rpm, it means that the engine starts successfully. At this time, cut off the starter relay to prevent the starter from working for a long time, which increases energy consumption and may cause the starter or one-way clutch to burn out, or even cause a vehicle fire accident.

Further, if the engine anti-theft authentication fails, the following steps are also included:

404. Send an engine lock signal;

4041. Cut off the first driving signal and/or the second driving signal according to the engine lock signal to disconnect the starting relay.

Among them, the engine lock signal is sent by the engine management unit and output to the one-button start control unit through the vehicle network bus. The one-button start control unit can cut off the first drive signal and disconnect the start relay after receiving the engine lock signal, increasing the disconnection Selectivity of the start relay.

Example 10

As shown in Figure 10, after the engine speed is greater than the preset value and the engine is running normally, disconnect the starter relay to stop the starter. In order to know the status of the starter after the starter relay is disconnected, disconnect the starter relay After that, the following steps are also included:

501. Perform fault detection on the starter;

502. If there is a fault in the starter, send out the fault information of the starter and save it.

The detected starter fault refers to detecting whether there is an electrical signal on the starter. If there is still an electrical signal on the starter after the starter relay is disconnected, it indicates that there is a problem with the starter, and the starter fault information is permanently saved and sent to the vehicle gateway. , for the driver to check for timely maintenance.

The preferred embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the specific details in the above-mentioned embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solutions of the present invention. These simple modifications all belong to the protection scope of the present invention.

In addition, it should be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way if there is no contradiction. The combination method will not be described separately. In addition, various combinations of different embodiments of the present invention can also be combined arbitrarily, as long as they do not violate the idea of the present invention, they should also be regarded as the disclosed content of the present invention.

Claims (17)

1. a starter control system, is characterized in that, comprises an interconnective key and starts control unit, engine management unit and starting relay;

A described key starts control unit and is connected with the first input end of starting relay, power on and power-off for controlling starting relay first input end, and after receiving the signal of ato unit, send the first drive singal the first input end of starting relay is powered on;

Described engine management unit is connected with the second input end of starting relay, power on and power-off for controlling starting relay second input end, and after receiving the signal of ato unit, send the second drive singal the second input end of starting relay is powered on;

Make starting relay close after the first input end of described starting relay and the second input end power on, described starting relay is connected with starter motor, and described starting relay is closed makes described starter motor start.

2. starter control system according to claim 1, is characterized in that, a described key starts control unit and comprises:

First neutral signal receiving unit, for receiving the neutral signal of neutral gear sensor collection and sending to the first control unit;

First control unit, for receiving the neutral signal of braking pedal signal and the forwarding of the first neutral signal receiving unit, and when receiving neutral signal and braking pedal steps on signal, sends the first control command;

First driver element, for sending the first drive singal according to the first control command;

Described engine management unit comprises:

Second neutral signal receiving unit, for receiving the neutral signal of neutral gear sensor collection and sending to the second control unit;

Second control unit, for receiving the neutral signal of braking pedal signal and the forwarding of the second neutral signal receiving unit, and when receiving neutral signal and braking pedal steps on signal, sends the second control command;

Second driver element, for sending the second drive singal according to the second control command.

3. starter control system according to claim 2, it is characterized in that, a described key starts control unit, engine management unit is connected with brake pedal switch respectively by rigid line, and a described key is started control unit and is connected by vehicle body control unit with engine management unit;

Described braking pedal steps on signal from described rigid line or from described vehicle body control unit.

4. starter control system according to claim 2, is characterized in that,

Described first neutral signal receiving unit comprises the first resistance element and the second resistance element, described first resistance element one end ground connection, and the other end is used for being connected with neutral gear sensor;

Described second resistance element one termination first predeterminated voltage, the other end is used for being connected with neutral gear sensor.

5. starter control system according to claim 2, it is characterized in that, described first driver element comprises the first metal-oxide-semiconductor, and the grid of described first metal-oxide-semiconductor is connected with the first control unit, drain electrode connection second predeterminated voltage, source electrode connects the first input end of starting relay;

Described second driver element comprises the second metal-oxide-semiconductor, and the grid of described second metal-oxide-semiconductor is connected with the second control unit, and drain electrode connects the second input end of starting relay, source ground.

6. starter control system according to claim 2, is characterized in that, a described key starts control unit and also comprises:

Fisrt fault detection unit, for detecting the first driver element whether fault, and when detecting the first driver element fault-free, the first driver element fault-free information that sends is to the first control unit and the second control unit.

7. starter control system according to claim 6, is characterized in that, described engine management unit also comprises:

Second fault detection unit, for detecting the second driver element whether fault, and when detecting the second driver element fault-free, the second driver element fault-free information that sends is to the first control unit and the second control unit;

Described first control unit also for receiving the second driver element fault-free information, braking pedal steps on signal, the first neutral signal receiving unit forwards neutral signal and the first driver element fault-free information time, send the first control command;

Described second control unit also for receiving the first driver element fault-free information, braking pedal steps on signal, the second neutral signal receiving unit forwards neutral signal and the second driver element fault-free information time, send the second control command.

8. starter control system according to claim 1, is characterized in that, also comprises the engine anti-theft authentication unit be located in engine management unit, and is located at the timing unit in a key startup control unit and/or engine management unit;

Described engine anti-theft authentication unit is used for when starting relay closes or after starting, and carries out engine anti-theft certification;

Described timing unit is used for carrying out timing to the time of engine anti-theft certification and the operating time of starter motor;

If engine anti-theft authenticated time arrives the first Preset Time, engine anti-theft certification does not complete, and controls the first driver element and/or the second driver element disconnection starting relay;

If the operating time of starter motor arrives the second Preset Time, control the first driver element and/or the second driver element and disconnect starting relay to disconnect starter motor.

9. starter control system according to claim 1, is characterized in that, is provided with in the 3rd fault detection unit and/or engine management unit and is provided with the 4th fault detection unit in a described key startup control unit;

Described 3rd fault detection unit and/or the 4th fault detection unit are used for, after starting relay disconnects, carrying out faut detection, and when detecting that starter motor exists fault, sending and preserving starter motor fault message starter motor.

10. starter control system controls a method for starter motor, and it is characterized in that, described starter control system is the starter control system in claim 1-9 described in any one;

The controlling method of described starter motor comprises the following steps:

The signal of A, acquisition ato unit;

B, a key start control unit and send the first drive singal according to the signal of ato unit starting relay first input end is powered on, and engine management unit sends the second drive singal according to the signal of ato unit starting relay second input end is powered on closed starting relay.

11. starter control systems according to claim 10 control the method for starter motor, it is characterized in that, after step A, before step B, further comprising the steps of:

Detect vehicle and whether be in neutral position state, detect braking pedal simultaneously and whether step on;

If detect and show that vehicle is in neutral position state and braking pedal is stepped on, then perform step B.

12. starter control systems according to claim 10 control the method for starter motor, it is characterized in that, further comprising the steps of:

Detect vehicle and whether be in neutral position state, detect braking pedal whether to step on, detect the first driver element whether fault testing result is sent to engine management unit, and detect the second driver element whether fault testing result sent to a key to start control unit;

If detect and show that vehicle is in neutral position state, braking pedal is stepped on, and engine management unit receives the first driver element fault-free information and a key startup control unit receives the second driver element fault-free information, then perform step B.

13. starter control systems according to claim 10 control the method for starter motor, it is characterized in that, after starting relay is closed, periodically detects the first driver element and whether there is fault and testing result is sent to engine management unit;

If engine management unit does not periodically receive the first driver element fault-free information, then cut off the second drive singal to disconnect starting relay;

After starting relay is closed, periodically detects the second driver element and whether there is fault and testing result sent to a key to start control unit;

If a key starts control unit periodically do not receive the second driver element fault-free information, then cut off the first drive singal to disconnect starting relay.

14. starter control systems according to claim 10 control the method for starter motor, it is characterized in that, described starter control system also comprises the engine anti-theft authentication unit be located in engine management unit, and is located at the timing unit in a key startup control unit and/or engine management unit;

When starting relay closes or closed after, carry out the antitheft certification of motor and timing, and timing carried out to the operating time of starter motor;

If the time of the antitheft certification of motor arrives the first Preset Time, engine anti-theft certification does not complete, then cut off the first drive singal and/or the second drive singal to disconnect starting relay;

If the operating time of starter motor arrives the second Preset Time, the first driver element and/or the second driver element disconnect starting relay to disconnect starter motor.

15. starter control systems according to claim 14 control the method for starter motor, it is characterized in that, if engine anti-theft authentication success, then send the index signal of engine anti-theft authentication success and detect engine speed;

If engine speed is greater than predefined value, then cut off the first drive singal and/or the second drive singal to disconnect starting relay.

16. starter control systems according to claim 14 control the method for starter motor, it is characterized in that, if engine anti-theft authentification failure, then send engine lock stop signal;

According to engine locking signal cut first drive singal and/or the second drive singal to disconnect starting relay.

17. starter control systems according to claim 15 control the method for starter motor, it is characterized in that, further comprising the steps of:

After disconnection starting relay, faut detection is carried out to starter motor;

If starter motor exists fault, then send starter motor fault message and preserve.