阅读说明：本技术 一种控制系统及电动汽车 (Control system and electric automobile ) 是由 王松涛 代康伟 梁海强 易迪华 于 2020-04-24 设计创作，主要内容包括：本发明提供一种控制系统及电动汽车,涉及整车控制技术领域,所述控制系统包括：第一控制器,用于在车辆车处于下电的情况下,在监测到车门传感器信号、解锁信号或制动信号时,向车辆的CAN网络发送唤醒信号；第二控制器,与所述第一控制器通过CAN网络连接,用于响应所述唤醒信号后,在确定车门被打开或制动踏板被踩下时,向所述CAN网络发送上电信号；第三控制器,与所述第一控制器和所述第二控制器通过所述CAN网络连接,用于响应所述唤醒信号后,响应所述上电信号,使所述车辆进入IG-ON高压上电状态。本发明的方案实现了根据车辆状态控制车辆自动上下电,实现了无感启动,提升了用户使用便利性。(The invention provides a control system and an electric automobile, and relates to the technical field of vehicle control, wherein the control system comprises: the first controller is used for sending a wake-up signal to a CAN network of the vehicle when monitoring a vehicle door sensor signal, an unlocking signal or a braking signal under the condition that the vehicle is powered off; the second controller is connected with the first controller through a CAN network and used for sending a power-on signal to the CAN network after responding to the awakening signal and when the door is opened or the brake pedal is stepped down; and the third controller is connected with the first controller and the second controller through the CAN network and used for responding to the power-ON signal after responding to the wake-up signal so as to enable the vehicle to enter an IG-ON high-voltage power-ON state. The scheme of the invention realizes automatic power on and power off of the vehicle according to the vehicle state, realizes non-inductive starting and improves the use convenience of users.)

1. A control system applied to a vehicle, characterized by comprising:

the first controller is used for sending a wake-up signal to a CAN network of the vehicle when monitoring a vehicle door sensor signal, an unlocking signal or a braking signal under the condition that the vehicle is powered off;

the second controller is connected with the first controller through a CAN network and used for sending a power-on signal to the CAN network after responding to the awakening signal and when the door is opened or the brake pedal is stepped down;

and the third controller is connected with the first controller and the second controller through the CAN network and used for responding to the power-ON signal after responding to the wake-up signal so as to enable the vehicle to enter an IG-ON high-voltage power-ON state.

2. The control system of claim 1, wherein the first controller comprises: a power chassis domain controller and/or a body domain controller;

the power chassis domain controller is used for switching from a dormant state to an awakening state when receiving a braking signal and sending the awakening signal to the CAN network;

and the vehicle body domain controller is used for switching from a dormant state to an awakening state when receiving an unlocking signal or a vehicle door sensor signal and sending the awakening signal to the CAN network.

3. The control system of claim 2, wherein the body area controller is further configured to send the door sensor signal and/or an unlock signal over the CAN network after sending the wake-up signal to the CAN network.

4. The control system of claim 1, wherein the second controller comprises a power chassis domain controller;

and the power chassis domain controller is used for sending a power-on instruction and an instrument lighting instruction to the CAN network when the door is opened or the brake pedal is stepped according to the unlocking signal and/or the door sensor signal.

5. The control system according to any one of claims 1 to 4, wherein the third controller includes: at least one of an instrument controller, a battery management system, and a body area controller;

when the vehicle is brought into an IG-ON high-voltage power-ON state in response to the power-ON signal:

the instrument controller is used for controlling the instrument and the central control to be lightened when the power-on signal is received;

the vehicle body area controller is used for controlling the low-voltage power supply of the vehicle to be switched on when receiving the power-on signal; and sending a low voltage power on signal over the CAN network after determining that the low voltage power is on;

the battery management system is used for controlling the power battery of the vehicle to be switched on when the power-on signal and the low-voltage power supply switching-on signal are received.

6. The control system of claim 1, further comprising:

and the electronic gear shifter is connected with the second controller through the CAN network and is used for sending a gear change signal to the CAN network when the gear change of the vehicle is monitored.

7. The control system according to claim 6, wherein the second controller is further configured to control the vehicle to enter a READY state when it is determined that the vehicle is in a D range or an R range with the vehicle in an IG-ON high-voltage state.

8. The control system according to claim 6, wherein the second controller is further configured to control the vehicle to enter an IG-ON high-voltage state when it is determined that the gear change of the vehicle is the P gear or the N gear with the vehicle in the READY state.

9. The control system of claim 6, wherein the second controller is further configured to, if the vehicle is in an IG-ON high voltage state or a READY state, determine that a gear of the vehicle is in a P gear within a preset time period, send a down signal over the CAN network;

the third controller is further configured to cause the vehicle to enter an OFF power-down state in response to the power-down signal.

10. The control system of claim 6, further comprising: the safety airbag sensor and the electronic stability controller are respectively connected with the second controller through the CAN network;

the safety airbag sensor is used for monitoring the state of a safety belt and sending a safety belt state signal to the CAN network;

the electronic stability controller is used for monitoring the speed of the vehicle and sending a speed signal to the CAN network;

the second controller is further used for sending a control signal for switching the gear to the P gear ON the CAN network when the vehicle is in an IG-ON high-voltage state or a READY state, the door is opened, the safety belt is unlocked and the vehicle speed is less than a preset vehicle speed;

the electronic shifter is also used for responding to the control signal of the gear switching to the P gear, and the gear of the vehicle is automatically switched to the P gear.

11. The control system of claim 6, further comprising: the intelligent key is wirelessly connected with the second controller;

the second controller is used for determining that the gear of the vehicle is P gear, the door of the vehicle is in a closed state, the intelligent key is located outside a preset range and sending a power-off signal ON the CAN network when the vehicle is in an IG-ON high-voltage state or a READY state and the vehicle receives a vehicle locking signal sent by the intelligent key;

the third controller is further configured to cause the vehicle to enter an OFF power-down state in response to the power-down signal.

12. The control system according to claim 9 or 11, wherein the third controller comprises: at least one of an instrument controller, a battery management system, and a body area controller;

upon bringing the vehicle into an OFF power-down state in response to the power-down signal:

the instrument controller is used for controlling the instrument and the central control to be turned off when the lower electric signal is received;

the vehicle body area controller is used for controlling the low-voltage power supply of the vehicle to be disconnected when receiving the lower electric signal, and sending a low-voltage power supply disconnected signal on the CAN network after the low-voltage power supply is disconnected;

the battery management system is used for controlling the power battery of the vehicle to be disconnected when the lower electric signal and the disconnected signal of the low-voltage power supply are received.

13. An electric vehicle, characterized in that it comprises a control system according to any one of claims 1-12.

Technical Field

The invention relates to the technical field of automobile control, in particular to a control system and an electric automobile.

Background

Along with the development of automobile industry, the development direction of future electric automobile is more intelligent, more convenient, at present, in order to realize the noninductive start, promptly: the traditional ignition/starting switch is cancelled, some manufacturers adopt to install a load-bearing sensor on a main driving seat, and control the automatic power on and off of the vehicle by using various sensors and information acquisition devices which are already arranged on the vehicle and combining the vehicle state, however, the structure and the wiring of the vehicle need to be adjusted in the mode, and the development and production cost is increased.

Disclosure of Invention

The invention aims to provide a control system and an electric automobile, so that the problems that in the prior art, signal acquisition and transmission are realized by adding a load-bearing sensor, and development and production cost are increased due to non-inductive starting are solved.

In order to achieve the above object, the present invention provides a control system comprising:

the first controller is used for sending a wake-up signal to a CAN network of the vehicle when monitoring a vehicle door sensor signal, an unlocking signal or a braking signal under the condition that the vehicle is powered off;

the second controller is connected with the first controller through a CAN network and used for sending a power-on signal to the CAN network after responding to the awakening signal and when the door is opened or the brake pedal is stepped down;

and the third controller is connected with the first controller and the second controller through the CAN network and used for responding to the power-ON signal after responding to the wake-up signal so as to enable the vehicle to enter an IG-ON high-voltage power-ON state.

Optionally, the first controller includes: a power chassis domain controller and/or a body domain controller;

the power chassis domain controller is used for switching from a dormant state to an awakening state when receiving a braking signal and sending the awakening signal to the CAN network;

and the vehicle body domain controller is used for switching from a dormant state to an awakening state when receiving an unlocking signal or a vehicle door sensor signal and sending the awakening signal to the CAN network.

Optionally, the vehicle body area controller is further configured to send the vehicle door sensor signal and/or the unlocking signal on the CAN network after sending the wake-up signal to the CAN network.

Optionally, the second controller comprises a power chassis domain controller;

and the power chassis domain controller is used for sending a power-on instruction and an instrument lighting instruction to the CAN network when the door is opened or the brake pedal is stepped according to the unlocking signal and/or the door sensor signal.

Optionally, the third controller includes: at least one of an instrument controller, a battery management system, and a body area controller;

when the vehicle is brought into an IG-ON high-voltage power-ON state in response to the power-ON signal:

the instrument controller is used for controlling the instrument and the central control to be lightened when the power-on signal is received;

the vehicle body area controller is used for controlling the low-voltage power supply of the vehicle to be switched on when receiving the power-on signal; and sending a low voltage power on signal over the CAN network after determining that the low voltage power is on;

the battery management system is used for controlling the power battery of the vehicle to be switched on when the power-on signal and the low-voltage power supply switching-on signal are received.

Optionally, the control system further includes:

and the electronic gear shifter is connected with the second controller through the CAN network and is used for sending a gear change signal to the CAN network when the gear change of the vehicle is monitored.

Optionally, the second controller is further configured to control the vehicle to enter a READY state when it is determined that the vehicle is in a D-gear or an R-gear under the condition that the vehicle is in an IG-ON high-voltage state.

Optionally, the second controller is further configured to, when it is determined that the gear of the vehicle is changed to the P gear or the N gear, control the vehicle to enter an IG-ON high-voltage state under the condition that the vehicle is in the READY state.

Optionally, the second controller is further configured to, when the vehicle is in an IG-ON high-voltage state or a READY state, determine that the gear of the vehicle is in a P gear within a preset time period, and send a down electric signal ON the CAN network;

the third controller is further configured to cause the vehicle to enter an OFF power-down state in response to the power-down signal.

Optionally, the control system further includes: the safety airbag sensor and the electronic stability controller are respectively connected with the second controller through the CAN network;

the safety airbag sensor is used for monitoring the state of a safety belt and sending a safety belt state signal to the CAN network;

the electronic stability controller is used for monitoring the speed of the vehicle and sending a speed signal to the CAN network;

the second controller is further used for sending a control signal for switching the gear to the P gear ON the CAN network when the vehicle is in an IG-ON high-voltage state or a READY state, the door is opened, the safety belt is unlocked and the vehicle speed is less than a preset vehicle speed;

the electronic shifter is also used for responding to the control signal of the gear switching to the P gear, and the gear of the vehicle is automatically switched to the P gear.

Optionally, the control system further includes: the intelligent key is wirelessly connected with the second controller;

the second controller is used for determining that the gear of the vehicle is P gear, the door of the vehicle is in a closed state, the intelligent key is located outside a preset range and sending a power-off signal ON the CAN network when the vehicle is in an IG-ON high-voltage state or a READY state and the vehicle receives a vehicle locking signal sent by the intelligent key;

the third controller is further configured to cause the vehicle to enter an OFF power-down state in response to the power-down signal.

Optionally, the third controller includes: at least one of an instrument controller, a battery management system, and a body area controller;

upon bringing the vehicle into an OFF power-down state in response to the power-down signal:

the instrument controller is used for controlling the instrument and the central control to be turned off when the lower electric signal is received;

the vehicle body area controller is used for controlling the low-voltage power supply of the vehicle to be disconnected when receiving the lower electric signal, and sending a low-voltage power supply disconnected signal on the CAN network after the low-voltage power supply is disconnected;

the battery management system is used for controlling the power battery of the vehicle to be disconnected when the lower electric signal and the disconnected signal of the low-voltage power supply are received.

The embodiment of the invention also provides an electric automobile which comprises the control system.

The technical scheme of the invention at least has the following beneficial effects:

according to the control system provided by the embodiment of the invention, when the vehicle is powered off, when the first Controller monitors user operations such as a vehicle door sensor signal, an unlocking signal or a braking signal, the first Controller is awakened, and further the first Controller awakens each Controller in a Controller Area Network (CAN) so that the CAN is in an activated state, then when the second Controller determines that the vehicle door is opened by the user or the brake pedal is pressed down by the user, the Controller judges that the user has the intention of immediately powering ON, and sends a power-ON signal in the CAN so that each Controller responds to the power-ON signal, so that the vehicle enters an IG-ON high-voltage power-ON state, the requirement of non-inductive starting is met ON the basis of not adjusting vehicle hardware, and the user experience is improved.

Drawings

FIG. 1 is a system architecture diagram of a control system according to an embodiment of the present invention;

fig. 2 is a schematic diagram illustrating a power mode conversion of a whole vehicle under a non-inductive start according to an embodiment of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

The invention provides a control system and an electric automobile, aiming at the problem that development and production cost are increased due to the fact that a hardware structure of a vehicle needs to be adjusted to achieve non-inductive starting in the prior art, and the purpose that the vehicle is controlled to achieve non-inductive starting by judging the state of a vehicle body part on the basis of the existing vehicle architecture is achieved.

The control system includes:

the first controller is used for sending a wake-up signal to a CAN network of the vehicle when monitoring a vehicle door sensor signal, an unlocking signal or a braking signal under the condition that the vehicle is powered off;

specifically, the situation that the vehicle is powered off at least comprises the following contents: the low-voltage power supply of the vehicle is in a disconnected state, the power battery is in a disconnected state, and the vehicle is in a vehicle locking and fortifying state.

The second controller is connected with the first controller through a CAN network and used for sending a power-on signal to the CAN network after responding to the awakening signal and when the door is opened or the brake pedal is stepped down; that is to say, after the second controller is awakened, if the door sensor signal or the brake signal sent by the first controller is received, the second controller needs to further determine whether the current door is opened or not, or the brake pedal is pressed down, and if both of the current door sensor signal and the brake signal are yes, the second controller sends a power-on signal on the CAN network.

And the third controller is connected with the first controller and the second controller through the CAN network and used for responding to the power-ON signal after responding to the wake-up signal so as to enable the vehicle to enter an IG-ON high-voltage power-ON state. The third controller is specifically configured to control power-ON of various components of the vehicle to enable the whole vehicle to enter an IG-ON high-voltage power-ON state, where the various components may include, but are not limited to, the following components: low voltage power supply, instrument and power battery.

According to the control system provided by the embodiment of the invention, when a vehicle is powered off and a first controller monitors user operations such as a vehicle door sensor signal, an unlocking signal or a braking signal, the first controller is awakened, and further sends an awakening signal in the CAN network through the first controller, so that the CAN network is in an activated state, and each controller in the CAN network is awakened; then, when the second controller determines that the vehicle door is opened by a user or the brake pedal is stepped down by the user, the second controller judges that the user has the intention of immediate power-ON, and sends a power-ON signal in the CAN network, so that each controller responds to the power-ON signal, the vehicle enters an IG-ON high-voltage power-ON state, the vehicle is controlled to be automatically powered ON and off by combining the vehicle state ON the basis of not adjusting the vehicle hardware, the requirement of non-inductive starting is met, and the convenience in use of the user is improved.

As an alternative embodiment, the first controller comprises: a power chassis domain controller 1 and/or a body domain controller 2; as shown in fig. 1, the power chassis area controller 1 is connected to the brake switch 3 through a hard wire, the vehicle body area controller 2 is connected to the vehicle door sensor 10 through a hard wire and is connected to the smart key 9 through a wireless connection, and the power chassis area controller 1 and the vehicle body area controller 2 are further connected through a CAN network.

The power chassis domain controller 1 is used for switching from a dormant state to an awakening state when receiving a braking signal sent by the braking switch 3, and sending the awakening signal to the CAN network; specifically, the brake switch 3 is connected to a brake pedal of the vehicle, and transmits a state of the brake pedal to the power chassis domain controller 1 through a hard wire.

And the vehicle body domain controller 2 is used for switching from a dormant state to an awakening state when receiving an unlocking signal or a vehicle door sensor signal and sending the awakening signal to the CAN network. Specifically, after the user presses an unlocking button in the smart key 9, the smart key 9 sends the unlocking signal to the body area controller 2 through a wireless network (a bluetooth signal or a radio frequency signal); the vehicle door sensor 10 monitors the vehicle door state in real time, and sends a vehicle door sensor signal representing the monitored vehicle door state to the vehicle body and the controller 2 through a hard wire; and the vehicle body and the controller 2 are used for switching from a dormant state to an awakening state when receiving the unlocking signal or the vehicle door sensor signal.

Further, as an optional embodiment, the body area controller 2 is further configured to send the door sensor signal and/or the unlock signal on the CAN network after sending the wake-up signal to the CAN network. Specifically, firstly, after the body area controller 2 sends the wake-up signal to the CAN network, the CAN network is in an activated state, so that each controller in the CAN network is woken up (each controller is powered on); secondly, the vehicle body area controller 2 sends the received unlocking signal and/or the vehicle door sensor signal representing the vehicle door state to the CAN network, so that the second controller CAN determine the vehicle door state of the vehicle according to the unlocking signal and/or the vehicle door sensor.

As an alternative embodiment, the second controller comprises a power chassis domain controller 1; the power chassis area controller 1 is used for sending a power-on instruction and an instrument lighting instruction to the CAN network when the vehicle door is opened or the brake pedal is treaded according to the unlocking signal and/or the vehicle door sensor signal. Specifically, when the power chassis domain controller 1 determines that the unlocking signal is unlocked and the door sensor signal is that the door is opened, or when the brake pedal is stepped on, the power chassis domain controller 1 determines that the user has a vehicle intention, so that the power chassis domain controller 1 further sends the power-on instruction and the instrument lighting instruction to the CAN network, and each controller in the CAN network conveniently powers on and lights up the instrument according to the power-on instruction and the instrument lighting instruction, thereby realizing the power-on of the vehicle.

As an alternative embodiment, as shown in fig. 1, the third controller includes: at least one of the meter controller 4, the battery management system 5, and the body area controller 2; the instrument controller 4, the battery management system 5 and the vehicle body area controller 2 are respectively connected with the first controller and the second controller through the CAN network.

Specifically, when the vehicle enters an IG-ON high-voltage power-ON state in response to the power-ON signal:

the instrument controller 4 is used for controlling the instrument and the central control to be lighted when the power-on signal is received;

the vehicle body area controller 1 is used for controlling the low-voltage power supply of the vehicle to be switched on when receiving the power-on signal; and sending a low voltage power on signal over the CAN network after determining that the low voltage power is on;

and the battery management system 5 is used for controlling the power battery of the vehicle to be switched on when receiving the power-on signal and the low-voltage power supply switching-on signal, so that the high voltage of the whole vehicle is realized.

That is to say, when the control system of the embodiment of the invention realizes the non-inductive starting of the vehicle, firstly, the instrument and the central control are required to be lightened, then the low-voltage power supply is switched ON, and finally the power battery of the vehicle is controlled to be switched ON, so that the high voltage of the whole vehicle is realized, and the vehicle enters an IG-ON high-voltage state.

According to the control system provided by the embodiment of the invention, when the unlocking signal, the vehicle door sensor signal or the brake pedal is monitored, the intention of a user to use the vehicle is judged, so that each controller of the vehicle is further controlled to be activated, and finally each controller controls corresponding vehicle parts to be lightened, connected or electrified, so that the high voltage of the whole vehicle is realized, the IG-ON high voltage state is realized, the vehicle is automatically electrified by combining the vehicle state, the non-inductive starting is realized in the process of using the vehicle by the user, and the use convenience of the user is improved.

Further, as an alternative embodiment, as shown in fig. 1, the control system further includes: and the electronic gear shifter 6 is connected with the second controller through the CAN network and is used for sending a gear change signal to the CAN network when the gear change of the vehicle is monitored. In the embodiment of the present invention, the electronic shifter 6 is connected to a shift lever of the vehicle, and is configured to monitor a change of the shift lever in real time and send the change of the shift lever to the CAN network in real time, so that the second controller CAN adjust the state of the vehicle according to the change of the shift lever.

Specifically, the process of the second controller adjusting the state of the vehicle is detailed below with reference to fig. 1 and 2:

ON one hand, when the second controller user determines that the vehicle is in a D gear or an R gear (the user is in the D gear or the R gear) under the condition that the vehicle is in an IG-ON high-voltage state, the second controller user controls the vehicle to enter a READY state. In this embodiment, when it is determined that the vehicle is in the D range or the R range, the second controller determines that the user has a purpose of driving, and therefore, the second controller controls the vehicle to enter a READY state, at which time, the vehicle is drivable, and the user can start driving the vehicle normally.

ON the other hand, the second controller is further used for controlling the vehicle to enter an IG-ON high-voltage state when the gear change of the vehicle is determined to be P gear or N gear under the condition that the vehicle is in a READY state.

ON the other hand, the second controller is further configured to, when the vehicle is in an IG-ON high-voltage state or a READY state, determine that a gear of the vehicle is in a P gear within a preset time period (e.g., 15min), determine that the user does not have any vehicle intention, and immediately send a down signal ON the CAN network;

the third controller is further configured to cause the vehicle to enter an OFF power-down state in response to the power-down signal.

It should be noted that, the control system may further determine the user's intention to use the vehicle by determining signals such as the state of the main driving seat belt and/or the vehicle speed, and determine whether the user currently needs to drive the vehicle, so as to be an optional embodiment, as shown in fig. 1, the control system further includes: the safety airbag sensor 7 and the electronic stability controller 8 are respectively connected with the second controller through the CAN network;

the safety airbag sensor 7 is used for monitoring the state of a safety belt and sending a safety belt state signal to the CAN network;

the electronic stability controller 8 is used for monitoring the vehicle speed of the vehicle and sending a vehicle speed signal to the CAN network;

the second controller is further used for judging that a user leaves the vehicle at present when the vehicle is determined to be opened, the safety belt is unlocked and the vehicle speed is less than the preset vehicle speed under the condition that the vehicle is in an IG-ON high-voltage state or a READY state, so that the second controller sends a control signal for switching the gear to the P gear ON the CAN network;

the electronic shifter 6 is also configured to automatically shift the gear of the vehicle to the P-range in response to the control signal for shifting the gear to the P-range.

Further, the control system further includes: the intelligent key 9 is wirelessly connected with the second controller;

the second controller is used for sending a down electric signal ON the CAN network when the vehicle is in an IG-ON high-voltage state or a READY state, the gear of the vehicle is determined to be a P gear, the door of the vehicle is in a closed state, the intelligent key 9 is located outside a preset range (outside the door of the vehicle) and receives a vehicle locking signal sent by the intelligent key;

the third controller is further configured to cause the vehicle to enter an OFF power-down state in response to the power-down signal.

Specifically, the third controller includes: at least one of the meter controller 4, the battery management system 5, and the body area controller 2;

upon bringing the vehicle into an OFF power-down state in response to the power-down signal:

the instrument controller 4 is used for controlling the instrument and the central control to be turned off when receiving the power-off signal;

the vehicle body area controller 2 is used for controlling the low-voltage power supply of the vehicle to be disconnected when receiving the lower electric signal, and sending a low-voltage power supply disconnection signal on the CAN network after the low-voltage power supply is disconnected;

the battery management system 5 is used for controlling the power battery of the vehicle to be disconnected when the lower electric signal and the low-voltage power supply disconnection signal are received.

The control system of the embodiment of the invention realizes that the vehicle body domain controller 2 receives an unlocking/locking signal of the intelligent key 9 through the wireless connection of the intelligent key 9 and the vehicle body domain controller 2, realizes the real-time monitoring of the vehicle door state through the hard-wire connection of the vehicle door sensor 10 and the vehicle body domain controller 2, ensures that the power chassis domain controller 1 can determine the vehicle door state according to the unlocking signal and/or the vehicle door sensor signal obtained in real time, or determines the vehicle using intention of a user according to the received brake signal sent by the brake switch 3, realizes the automatic power on and power off of the vehicle according to the vehicle state, realizes the non-inductive start in the process of using the vehicle by the user, thereby solving the problems of research and development and high production cost caused by the non-inductive start realized by adjusting the whole vehicle framework in the prior art, and the convenience of use of the user is improved.

The embodiment of the invention also provides an electric automobile which comprises the control system.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.