On-vehicle power supply control system, electric vehicle, and on-vehicle power supply control method

Abstract

The embodiment of the present invention discloses an on-board power supply control system, an electric vehicle and an on-board power supply control method. The on-board power supply control system includes a main battery, vehicle-side electrical components and automatic driving electrical components, the main battery is provided with a first power output interface and a second power output interface; the first power output interface is connected to the automatic driving electrical components, the second power output interface is connected to the vehicle-side electrical components; the main battery is used to control the power supply status of the two power output interfaces respectively according to the interface control instructions. In the embodiment of the present invention, the automatic driving electrical components can be independently controlled, so as to avoid the influence of the working voltage fluctuation of the vehicle-side electrical components on the voltage of the automatic driving electrical components, and improve the working stability of the automatic driving electrical components.

Description

Technical Field

[0001] The embodiments of the present invention relate to electrical control technology, and in particular to an on-board power supply control system, an electric vehicle and an on-board power supply control method for autonomous driving. Background Art

[0002] There is an existing electric vehicle that uses a high-voltage battery to power the power motor and other vehicle-side electrical appliances in the vehicle. With the development of autonomous driving technology, many electrical components used to support autonomous driving technology have gradually been added to the vehicle, and these electrical components are generally also powered by high-voltage batteries.

[0003] In the current vehicle power supply system, in order to ensure the safety of high-voltage batteries, the power supply circuit of the high-voltage battery will be disconnected when the driver controls the vehicle to shut down or when the high-voltage battery is charging. As a result, the components related to the autonomous driving technology that are powered will also be shut down when the power is off.

[0004] However, the electrical components that support autonomous driving technology are not exactly the same as conventional vehicle-side electrical appliances. They require higher precision, and their working conditions and working hours are also different. Therefore, the existing on-board power supply system is not suitable for electric vehicles that use autonomous driving technology. Summary of the invention

[0005] Embodiments of the present invention provide an on-board power supply control system, an electric vehicle, and an on-board power supply control method to optimize the on-board power supply control logic to better meet the working requirements of electrical components of an autonomous driving vehicle.

[0006] In a first aspect, an embodiment of the present invention provides a vehicle-mounted power supply control system, including a main battery, a vehicle-side electrical component, and an automatic driving electrical component, wherein:

[0007] The main battery is provided with a first power output interface and a second power output interface;

[0008] The first power output interface is connected to the automatic driving electrical component, and the second power output interface is connected to the vehicle-side electrical component;

[0009] The main storage battery is used to control the power supply status of the two power output interfaces respectively according to the interface control instructions.

[0010] Optionally, the main battery is further provided with an interface control element, which is connected between the battery output terminal of the main battery and the two power output interfaces, and is used to control the power supply status of the two power output interfaces respectively according to the interface control instructions.

[0011] Optionally, the autonomous driving electrical component includes at least one of the following:

[0012] A strategy calculation unit, used for calculating the autonomous driving strategy;

[0013] Positioning equipment, used for vehicle positioning;

[0014] Sensors are used to collect information.

[0015] Optionally, the strategy calculation unit is further provided with:

[0016] The power-on command interface is used to receive the power-on command to start the software;

[0017] The shutdown command interface is used to receive a shutdown command to exit the software.

[0018] Optionally, the power-on command interface is connected to a user power-on switch provided at the vehicle end via an electrical circuit, and is used to receive a power-on command; the power-off command interface is used to receive a power-off command sent remotely via a wireless protocol.

[0019] Optionally, the control system also includes: a built-in DC conversion circuit, connected between the first power output interface and the positioning device and sensor, and connected to the strategy calculation unit, for converting the voltage output by the first power output interface to DC under the control of the strategy calculation unit, and outputting it to the positioning device and sensor.

[0020] Optionally: a vehicle controller provided at the vehicle end is used to send a power supply interface control instruction to the first power output interface and the second power output interface when a vehicle key switch closing signal is detected;

[0021] The vehicle controller is further configured to send a power-off interface control instruction to the first power output interface and the second power output interface when a disconnection signal of the vehicle key switch is detected;

[0022] The vehicle controller is also used to send a power supply interface control instruction to the first power output interface and send a power-off interface control instruction to the second power output interface when it is detected that the charging interface of the main battery is started.

[0023] Optionally, the network equipment and security equipment provided on the vehicle side are respectively connected to the first power output interface through the vehicle key switch.

[0024] Optionally, an autonomous driving DC conversion unit is also connected between the first power output interface and the autonomous driving electrical components, for converting the voltage of the main battery into a first set voltage required by the autonomous driving electrical components; a vehicle-end DC conversion unit is also connected between the second power output interface and the vehicle-end electrical components, for converting the voltage of the main battery into a second set voltage required by the vehicle-end electrical components.

[0025] Optionally, a safety device and / or a backup battery is also connected between each of the power output interfaces and the autonomous driving electrical components or the vehicle-end electrical components.

[0026] Optionally, the strategy calculation unit in the autonomous driving electrical component is also used to start a software upgrade operation if it is identified that the strategy calculation load state meets preset conditions or a software upgrade instruction is received.

[0027] In a second aspect, an embodiment of the present invention further provides an electric vehicle, comprising the on-board power supply control system described in the first aspect of the embodiment of the present invention; the vehicle-end electrical components include a power motor and vehicle-end electrical appliances.

[0028] In a third aspect, an embodiment of the present invention further provides a vehicle-mounted power supply control method, which is executed by the vehicle-mounted power supply control system according to the first aspect of the embodiment of the present invention, and the method includes:

[0029] The vehicle controller provided at the vehicle end, when detecting a vehicle key switch closing signal, sends a power supply interface control instruction to the first power output interface and the second power output interface, so as to respectively supply power to the vehicle end electrical components and the automatic driving electrical components;

[0030] When the vehicle controller detects that the charging interface of the main battery is started, it sends a power supply interface control instruction to the first power output interface, and sends a power-off interface control instruction to the second power output interface.

[0031] Optionally, the control method further includes:

[0032] When the strategy calculation unit in the autonomous driving electrical component in the power supply state receives a power-on instruction, the software starts running;

[0033] When the policy calculation unit in the software running state receives a shutdown instruction, the software is exited.

[0034] Optionally, the control method further includes:

[0035] The strategy calculation unit in the autonomous driving electrical component starts a software upgrade operation if it recognizes that the strategy calculation load state meets a preset condition or receives a software upgrade instruction.

[0036] The technical solution of the embodiment of the present invention provides a vehicle-mounted power supply control system including a main battery, vehicle-side electrical components and automatic driving electrical components; the main battery is provided with a first power output interface and a second power output interface; the first power output interface is connected to the automatic driving electrical components, and the second power output interface is connected to the vehicle-side electrical components; the main battery is used to control the power supply status of the two power output interfaces respectively according to the interface control instructions. Thus, through independent power output interfaces, the vehicle-side electrical components and the automatic driving electrical components are powered respectively, and the power supply logic can be independently controlled through the interface control instructions, reducing the impact of the power supply of the vehicle-side electrical components on the power supply of the automatic driving electrical components. For example, when the working voltage required by the vehicle-side electrical components changes and fluctuates, the voltage output by the first power output interface of the main battery will not fluctuate, thereby improving the working stability of the automatic driving electrical components; it can also achieve physical isolation of the automatic driving electrical components and the vehicle-side electrical components, further improving the working stability of the automatic driving electrical components. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A schematic diagram of the circuit structure of a vehicle-mounted power supply control system provided by an embodiment of the present invention;

[0038] Figure 2 A schematic diagram of the circuit structure of another vehicle-mounted power supply control system provided by an embodiment of the present invention;

[0039] Figure 3 A schematic diagram of the circuit structure of another vehicle-mounted power supply control system provided by an embodiment of the present invention;

[0040] Figure 4 A schematic diagram of the circuit structure of another vehicle-mounted power supply control system provided by an embodiment of the present invention;

[0041] Figure 5 A schematic diagram of the circuit structure of another vehicle-mounted power supply control system provided by an embodiment of the present invention;

[0042] Figure 6 A schematic diagram of the circuit structure of another vehicle-mounted power supply control system provided by an embodiment of the present invention;

[0043] Figure 7 A schematic diagram of the circuit structure of another vehicle-mounted power supply control system provided by an embodiment of the present invention;

[0044] Figure 8 A schematic diagram of the circuit structure of another vehicle-mounted power supply control system provided by an embodiment of the present invention;

[0045] Fig. 9 A schematic diagram of a circuit structure of an electric vehicle provided by an embodiment of the present invention;

[0046] Fig.10 The present invention provides a flow chart of a vehicle power supply control method. DETAILED DESCRIPTION

[0047] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0048] Figure 1 This is a schematic diagram of the circuit structure of a vehicle power supply control system provided by an embodiment of the present invention. The control system is suitable for being assembled in an electric vehicle to control the power supply and power supply logic of the power-consuming components in the electric vehicle. Figure 1 The vehicle-mounted power supply control system includes a main battery 101, a vehicle-end electrical component 102 and an automatic driving electrical component 103; the main battery 101 is provided with a first power output interface A1 and a second power output interface A2; the first power output interface A1 is connected to the automatic driving electrical component 103, and the second power output interface A2 is connected to the vehicle-end electrical component 102; the main battery 101 is used to control the power supply status of the two power output interfaces respectively according to the interface control instructions.

[0049] Specifically, the main battery 101 may be a power battery on an electric vehicle, which can be used to provide energy for the normal driving of the electric vehicle, such as a commonly used on-board high-voltage battery; the vehicle-end electrical components 102 may include electrical components of various parts of the electric vehicle's power system, braking system, and entertainment system, such as a power motor for converting the electrical energy of the power battery into mechanical energy to enable the electric vehicle to travel. At the same time, the vehicle-end electrical components 102 may also include other functions required for the electric vehicle to travel, such as an air-conditioning system, a lighting system, and a radio in the car; the automatic driving electrical components 103 can be used to provide computing services for the automatic driving of the electric vehicle, etc., mainly including strategy computing components, and may also include other electrical collection and execution electrical components, etc.

[0050] The vehicle-side electrical component 102 involves many components, and the operating voltage range of various components is large. Different systems inside it require different voltages when working. Therefore, if the automatic driving component 103 and the vehicle-side electrical component 102 share a power output terminal of the main battery 101, when different systems in the vehicle-side electrical component 102 are working, the operating voltage of the automatic driving electrical component 103 will fluctuate, thereby affecting the working stability of the automatic driving electrical component 103. In addition, the automatic driving electrical component 103 has high precision requirements, and voltage fluctuations will seriously reduce its precision. In this embodiment, the main battery 101 supplies power to the automatic driving electrical component 103 through the first power output interface A1, and supplies power to the vehicle-side electrical component 102 through the second power output interface A2. When the working voltage required by the vehicle-side electrical component 102 changes, the voltage output by the first power output interface A1 can remain stable, thereby not affecting the normal operation of the automatic driving component 103. work, thereby improving the working stability of the automatic driving component 103; at the same time, the main battery 101 can also control the power supply status of the first power output interface A1 and the second power output interface A2 respectively according to the interface control instruction, so as to realize independent control of the power supply status of the automatic driving electrical component 103 and the vehicle-end electrical component 102. When the two do not need to work at the same time, the main battery 101 can choose to disconnect the corresponding power output interface. For example, when the vehicle-end electrical component 102 does not need to work and the automatic driving electrical component 103 needs to work, the main battery 101 can disconnect the second power output interface A2 and turn on the first power output interface A1 under the control of the interface control instruction. While saving electric energy, the vehicle-end electrical component 102 and the automatic driving electrical component 103 can also be physically isolated, further avoiding the influence of the vehicle-end electrical component 102 on the working voltage of the automatic driving component 103, that is, further improving the working stability of the automatic driving component 103.

[0051] The technical solution of this embodiment provides a vehicle-mounted power supply control system including a main battery, vehicle-side electrical components and automatic driving electrical components; the main battery is provided with a first power output interface and a second power output interface; the first power output interface is connected to the automatic driving electrical components, and the second power output interface is connected to the vehicle-side electrical components; the main battery is used to control the power supply status of the two power output interfaces respectively according to the interface control instructions. When the working voltage required by the vehicle-side electrical components changes, causing the voltage outputted by the second power output interface of the main battery to fluctuate, the voltage outputted by the first power output interface of the main battery will not fluctuate, thereby improving the working stability of the automatic driving electrical components; at the same time, the main battery can also control the power supply status of the first power output interface and the second power output interface respectively according to the interface control instructions, so as to realize independent control of the power supply status of the automatic driving electrical components and the vehicle-side electrical components, while saving electric energy, it can also realize the physical isolation of the automatic driving electrical components and the vehicle-side electrical components, further improving the working stability of the automatic driving electrical components.

[0052] Optional, Figure 2 This is a circuit diagram of another vehicle power supply control system provided by an embodiment of the present invention. This embodiment is optimized and improved on the basis of the technical solution of the previous embodiment. Figure 2 The main battery 101 is also provided with an interface control element 1011, which is connected between the battery output terminal of the main battery 101 and the two power output interfaces, and is used to control the power supply status of the two power output interfaces respectively according to the interface control instructions.

[0053] Specifically, the main battery 101 generally includes a battery body and a controller for controlling the working state of the battery. In this embodiment, an interface control element 1011 is further provided between the battery output end of the battery body and the two power output interfaces A1 and A2, and is respectively connected to the first power output interface A1 and the second power output interface A2; the interface control element 1011 can, under the control of the interface control instruction, conduct the connection path between the battery output end and the first power output interface A1, so that the main battery 101 supplies power to the automatic driving electrical component 103, and / or conduct the connection path between the battery output end and the second power output interface A2, so that the main battery 101 supplies power to the vehicle-side electrical component 102. The interface control element 1011 can, for example, use electrical components such as relays, triodes or switches to achieve state switching under instruction control.

[0054] For example, Figure 3 A circuit diagram of another vehicle power supply control system provided by an embodiment of the present invention, referring to Figure 3The interface control element 1011 may include a first relay 1012 and a second relay 1013. The switch of the first relay 1012 is connected between the battery output terminal and the first power output interface A1, and the switch of the second relay 1013 is connected between the battery output terminal and the second power output interface A2. When the interface control element 1011 receives an interface control instruction, the coils in the first relay 1012 and / or the second relay 1013 are energized, thereby closing the corresponding switches, thereby enabling the main battery 101 to supply power to the autonomous driving electrical components 103 and / or the vehicle-end electrical components 102.

[0055] Optional, Figure 4 A circuit diagram of another vehicle power supply control system provided by an embodiment of the present invention, referring to Figure 4 The autonomous driving electrical component 103 includes at least one of the following: a strategy calculation unit 1031, used for performing autonomous driving strategy calculation; a positioning device 1032, used for vehicle positioning; and a sensor 1033, used for information collection.

[0056] Specifically, the strategy calculation unit 1031 can be used to calculate the autonomous driving strategy based on information such as road conditions, weather, and the physical condition of the passengers, such as acceleration rate control, deceleration rate control, and lane change control strategies; the positioning device 1032 and the sensor 1033 can provide the strategy calculation unit 1031 with relevant parameters for calculating the autonomous driving strategy, such as electric vehicle position information, road condition information, and the physical condition of the passengers; the sensor 1033 may include a camera and a laser point cloud radar, etc.

[0057] Optional, Figure 5 A circuit diagram of another vehicle power supply control system provided by an embodiment of the present invention, referring to Figure 5 The strategy calculation unit 1031 is further provided with: a startup instruction interface D1 for receiving a startup instruction to start the software; and a shutdown instruction interface D2 for receiving a shutdown instruction to exit the software.

[0058] Specifically, if the strategy calculation unit 1031 is started directly after being powered on, then whether the strategy calculation unit 1031 is turned on or not is directly controlled by the power supply circuit. However, in the vehicle control system, power supply and power-off signals may be generated due to various reasons or malfunctions. Then, the strategy calculation unit 1031 will also frequently switch between starting and exiting with the switching of power supply and power-off. Frequent startup and exit are harmful to the strategy calculation unit 1031 that needs to process a large amount of data calculations. It may not be possible to load data and processes in time, or the strategy data may be lost when exiting. This affects both the service life of the strategy calculation unit 1031 and its operating accuracy.

[0059] In the technical solution of this embodiment, by setting an additional power-on command interface D1 and a power-off command interface D2 on the strategy calculation unit 1031, the power supply logic is avoided from directly controlling the startup and exit. When the interface control command controls the main battery 101 to supply power to the strategy calculation unit 1031, and the power-on command interface D1 receives the power-on command, the strategy calculation unit 1031 will start up and perform the calculation work of the automatic driving strategy; at the same time, the startup and shutdown of the strategy calculation unit 1031 use two interfaces, and the strategy calculation unit 1031 will shut down when the shutdown command interface D2 receives the shutdown command. In this way, the startup and exit of the strategy calculation unit 1031 can be independently controlled through two ways. For automatic driving vehicles, especially unmanned vehicles, their control strategies will affect driving safety, so the exit work of the strategy calculation unit needs to be more cautious, and the wrong exit should be minimized.

[0060] For example, continue to refer to Figure 5 The power-on command interface D1 is connected to the user power-on switch 201 set at the vehicle end through an electrical line, and is used to receive a power-on command; the power-off command interface D2 is used to receive a power-off command sent remotely through a wireless protocol.

[0061] Specifically, the user power switch 201 can be a push-button switch, which can be set at a position close to any seat of the electric vehicle. When the user presses the power switch 201, the power switch 201 sends a signal to the power-on command interface D1 of the strategy calculation unit 1031. For example, at this time, the power-on interface command D1 receives a high-level signal, thereby turning on the strategy calculation unit 1031. It is preferred that the user power switch 201 is set at a position close to the driver's seat, such as around the vehicle-mounted display screen; the shutdown command interface D2 is an interface implemented based on a wireless communication protocol, and the wireless communication protocol is, for example, Wireless Fidelity (Wireless Fidelity). Fidelity, WiFi) protocol, can communicate with remote device 202, when shutdown command interface D2 receives shutdown command from remote device 202, strategy computing unit 1031 gradually exits various software programs running, realizes soft shutdown of strategy computing unit 1031, and avoids data loss of strategy computing unit 1031; remote device 202 can be a mobile phone, tablet computer or cloud server, etc., and shutdown command can be issued by user through mobile phone or tablet computer, etc.; in certain cases, such as when the person in the electric vehicle forgets to issue shutdown command through mobile phone or tablet computer, shutdown command can also be sent through cloud server to save power of main battery 101 and increase driving range. It should be noted that shutdown command interface D2 can also be connected to user shutdown switch set at vehicle end through electrical line to receive shutdown command.

[0062] Optional, Figure 6A circuit diagram of another vehicle power supply control system provided by an embodiment of the present invention, referring to Figure 6 The vehicle power supply control system also includes a built-in DC conversion circuit 1034, which is connected between the first power output interface A1 and the positioning device 1032 and the sensor 1033, and is connected to the strategy calculation unit 1031, and is used to convert the voltage output by the first power output interface A1 into DC under the control of the strategy control unit 1031, and output it to the positioning device 1032 and the sensor 1033.

[0063] Specifically, the built-in DC conversion circuit 1034 can operate under the control of the strategy calculation unit 1031 to convert the high-voltage DC power (such as 380V) output by the main battery 101 through the first power output terminal A1 into the low-voltage DC power (such as 12V) required for the normal operation of the positioning device 1032 and the sensor 1033; the built-in DC conversion circuit 1034 can supply power to the positioning device 1032 or the sensor 1033 separately under the control of the strategy calculation unit 1031. For example, when the current autonomous driving strategy does not need to use the positioning device 1032, the strategy calculation unit 1031 can control the built-in DC conversion circuit 1034 to supply power to the sensor 1033 to save energy. The electric energy of the main battery 101 is used to improve the battery life; the built-in DC conversion circuit 1034 can also supply power to the positioning device 1032 and the sensor 1033 under the control of the strategy calculation unit 1031. Only when the positioning device 1032 and the sensor 1033 do not need to work, the strategy calculation unit 1031 controls the built-in DC conversion circuit 1034 to close the power supply path to the positioning device 1032 and the sensor 1033, thereby reducing the calculation amount of the strategy calculation unit 1031, that is, reducing the load of the strategy calculation unit 1031, reducing the probability of calculation errors of the strategy calculation unit 1031, and extending the service life of the strategy calculation unit 1031. At the same time, the built-in DC conversion circuit 1034 supplies power to the positioning device 1032 and the sensor 1033, and its output voltage is more stable, which further improves the working stability of the positioning device 1032 and the sensor 1033.

[0064] Optional, Figure 7 A circuit diagram of another vehicle power supply control system provided by an embodiment of the present invention, referring to Figure 7The vehicle power supply control system also includes a vehicle controller 301 arranged on the vehicle side, which is used to send a power supply interface instruction to the first power output interface A1 and the second power output interface A2 when a vehicle key switch closing signal is detected; the vehicle controller 301 is also used to send a power-off interface control instruction to the first power output interface A1 and the second power output interface A2 when a vehicle key switch disconnection signal is detected; the vehicle controller 301 is also used to send a power supply interface control instruction to the first power output interface A1 and a power-off interface control instruction to the second power output interface A2 when it is detected that the charging interface of the main battery 101 is started.

[0065] For example, Figure 7As shown, the vehicle key switch 302 can be connected between the vehicle controller 301 and the first power output interface A1. When the vehicle key switch 302 is disconnected, the vehicle controller 301 can be in a dormant state under the action of a backup dedicated battery to reduce power consumption; when the vehicle key switch 302 is closed, it means that the user needs to use the electric vehicle at this time. The vehicle controller 301 detects the vehicle key switch closing signal, thereby being awakened from the dormant state and sending a power supply control instruction to the first power output interface A1 and the second power output interface A2; specifically, a power supply control instruction can be sent to the interface control unit 1011 to energize the coils of the first relay and the second relay in the interface control unit 1011, so that the automatic driving electrical components 103, the vehicle-end electrical components 102 and the vehicle controller 301 are all powered by the main battery 101, thereby enabling the electric vehicle to travel normally and use the automatic driving function. When the vehicle key switch 302 is disconnected, it means that the user does not need to use the electric vehicle at this time. The vehicle controller 301 detects the vehicle key switch disconnection signal and sends a power-off interface control instruction to the first power output interface A1 and the second power output interface A2; specifically, the power-off interface control instruction can be sent to the interface control unit 1011 to cut off the power to the coils of the first relay and the second relay in the interface control unit 1011, so that the automatic driving electrical components 103, the vehicle-side electrical components 102 and the vehicle controller 301 are all powered off to avoid wasting the power of the main battery 101. When the main battery 101 needs to be charged, since the vehicle-side electrical components 102 have a large load and require a large working voltage, which can reach more than 200V and have a large output power, if the main battery 101 still supplies power to the vehicle-side electrical components 102 at this time, the main battery 101 will be easily damaged; and since the working voltage required by the automatic driving electrical components 103 is relatively small, generally only about 12V, the automatic driving electrical components 103 are still powered by the main battery 101, which will not affect the life of the main battery 101; therefore, when the vehicle controller 301 detects When the charging interface of the main battery 101 is started, a power-off interface control instruction is sent to the second power output interface A2 to prohibit the vehicle-side electrical component 102 from working and prevent damage to the main battery 101; in addition, a power supply interface control instruction can also be sent to the first power output interface A1 according to specific circumstances. For example, when the software in the strategy calculation unit 1031 needs to be upgraded, a power supply interface control instruction can be sent to the first power output interface A1, thereby avoiding the problem that the strategy calculation unit 1031 cannot be upgraded during the charging process of the main battery 101 in the existing electric vehicle. The strategy calculation unit 1031 in the autonomous driving electrical component is also used to start the software upgrade operation in the startup state if it is recognized that the strategy calculation load state meets the preset conditions or a software upgrade instruction is received.The upgrade operation of the strategy calculation unit 1031 may not be performed during the driving of the electric vehicle, that is, the automatic driving function can always be used during the driving of the electric vehicle, thereby improving the utilization efficiency of the entire electric vehicle; when the automatic driving electrical component 103 does not need to work, the vehicle controller 301 can also send a power-off interface control instruction to the first power output interface A1, thereby avoiding consumption of power in the main battery 101 and reducing charging time.

[0066] It should be noted that the vehicle controller 301 can send interface control instructions to the first power output interface A1 and the second power output interface A2 of the main battery 101 through the CAN bus, and can also send interface control instructions to the first power output interface A1 and the second power output interface A2 of the main battery 101 through a separately arranged control circuit. The embodiment of the present invention does not make specific limitations on this.

[0067] Optional, continue to refer to Figure 7 The vehicle-mounted power supply control system also includes a network device 303 and a safety device 304 arranged at the vehicle end, which are respectively connected to the first power output interface A1 through the vehicle key switch 302.

[0068] Specifically, the network device 303 can be used to communicate the vehicle-mounted power supply control system with the external network to obtain information such as weather or external instructions; the safety device 304 can be used to improve the safety of the electric vehicle, and may include automatic braking control systems; when the vehicle key switch 302 is closed, the network device 303 and the safety device 304 can be powered by the main battery 101 to work; at the same time, since the network device 303 and the safety device 304 are powered from the first power output interface A1, changes in the operating voltage of the vehicle-end electrical components 102 will not affect the voltage of the network device 303 and the safety device 304, thereby improving the working stability of the network device 303 and the safety device 304.

[0069] Optional, Figure 8 A circuit diagram of another vehicle power supply control system provided by an embodiment of the present invention, referring to Figure 8 An automatic driving DC conversion unit (DC / DC) 401 is also connected between the first power output interface A1 and the automatic driving electrical component 103, which is used to convert the voltage of the main battery 101 into the first set voltage required by the automatic driving electrical component 103; a vehicle-end DC conversion unit (DC / DC) 402 is also connected between the second power output interface A2 and the vehicle-end electrical component 102, which is used to convert the voltage of the main battery 101 into the second set voltage required by the vehicle-end electrical component 102.

[0070] Specifically, the first set voltage and the second set voltage may be different according to the difference between the autonomous driving electrical component 103 and the vehicle-side electrical component 102; for example, when the autonomous driving electrical component 103 includes a strategy calculation unit 1031, if the working voltage of the strategy calculation unit 1031 is 12.8V, the output voltage of the autonomous driving DC conversion unit 401 may be set to 12.8V to meet the normal working requirements of the strategy calculation unit 1031; if the vehicle-side electrical component 102 includes a motor, the voltage value of the second set voltage may be determined according to the working voltage of the motor, such as the value of the second set voltage may be 336V. Exemplarily, both the autonomous driving DC conversion unit 401 and the vehicle-side DC conversion unit 402 may include a DC-DC converter.

[0071] Optional, continue to refer to Figure 8 A safety device and / or a backup battery is also connected between each power output interface and the automatic driving electrical component 103 or the vehicle-end electrical component 102.

[0072] Specifically, Figure 8 As shown, an automatic driving backup battery 404 and / or a safety device 403 may be connected between the first power output interface A1 and the automatic driving electrical component 103. The output voltage of the automatic driving backup battery 404 may be set to be consistent with the working voltage of the automatic driving electrical component 103. When the main battery 101 fails, the automatic driving backup battery 404 may supply power to the automatic driving electrical component 103 to prevent the automatic driving electrical component 103 from suddenly losing power, thereby protecting the automatic driving electrical component 103. When the on-board power supply control system also includes an automatic driving DC conversion unit 401, the automatic driving The autonomous driving backup battery 404 can be connected to the voltage output terminal of the autonomous driving DC conversion unit 401. When the main battery 101 supplies power to the autonomous driving electrical components 103, the autonomous driving backup battery 404 can also be charged through the autonomous driving DC conversion unit 401. When the on-board power supply control system includes the autonomous driving backup battery 404 and the safety device 403, the safety device 403 can be arranged between the autonomous driving backup battery 404 and the autonomous driving electrical components 103 to prevent the autonomous driving electrical components 103 from being damaged when the main battery 101 and the autonomous driving backup battery 404 are damaged.

[0073] A vehicle-side backup battery 405 and / or a safety device 403 may be connected between the second power output interface A2 and the vehicle-side electrical component 102. The output voltage of the vehicle-side backup battery 405 may be set to be consistent with the working voltage of the vehicle-side electrical component 102. When the main battery 101 fails, the vehicle-side backup battery 405 may supply power to the vehicle-side electrical component 102 to prevent the vehicle-side electrical component 102 from suddenly losing power, thereby preventing the vehicle-side electrical component 102 from suddenly losing power. When the vehicle-mounted power supply control system also includes a vehicle-side DC conversion unit 402, the vehicle-side backup battery 405 may be connected to the vehicle-side DC conversion unit 402 to ensure that the vehicle-side electrical component 102 is powered on. The battery 405 can be connected to the voltage output end of the vehicle-end DC conversion unit 402. When the main battery 101 supplies power to the vehicle-end electrical components 102, the vehicle-end electrical components 405 can also be charged through the vehicle-end DC conversion unit 402. When the on-board power supply control system includes a vehicle-end backup battery 405 and a safety device 403, the safety device 403 can be arranged between the vehicle-end backup battery 405 and the vehicle-end electrical components 102 to prevent damage to the vehicle-end electrical components 102 when the main battery 101 and the vehicle-end backup battery 405 are damaged.

[0074] Fig. 9 A schematic diagram of a circuit structure of an electric vehicle provided by an embodiment of the present invention, referring to Fig. 9 The electric vehicle includes the on-board power supply control system of any item of this embodiment; the vehicle-end electrical components include a power motor 1021 and vehicle-end electrical appliances 1022.

[0075] Specifically, the power motor 1021 can be used to convert the electrical energy provided by the main battery 101 into mechanical energy to drive the electric vehicle; the vehicle-side electrical appliances 1022 may include electrical appliances such as interior lights, interior air conditioning, and interior radio to provide a more comfortable riding environment.

[0076] Fig.10 A flow chart of a vehicle power supply control method provided by an embodiment of the present invention, referring to Fig.10 The vehicle power supply control method can be executed by the vehicle power supply control system of any embodiment of the present invention, and the vehicle power supply control method includes:

[0077] Step 501: When a vehicle key switch closing signal is detected, the vehicle controller provided at the vehicle end sends a power supply interface control instruction to the first power output interface and the second power output interface to respectively supply power to the vehicle end electrical components and the automatic driving electrical components;

[0078] Specifically, when the vehicle key switch is disconnected, the vehicle controller can be in a dormant state under the action of a dedicated battery to reduce power consumption. When the vehicle key switch is closed, it means that the user needs to use the electric vehicle at this time. The vehicle controller detects the vehicle key switch closing signal, thereby being awakened from the dormant state and sending a power supply control instruction to the first power output interface and the second power output interface; specifically, a power supply control instruction can be sent to the interface control unit to energize the coils of the first relay and the second relay in the interface control unit, so that the automatic driving electrical components, the vehicle-side electrical components and the vehicle controller are all powered, thereby enabling the electric vehicle to drive normally and use the automatic driving function.

[0079] Step 502, when the vehicle controller detects that the charging interface of the main battery is started, it sends a power supply interface control instruction to the first power output interface, and sends a power off interface control instruction to the second power output interface;

[0080] When the main battery needs to be charged, since the load of the vehicle-side electrical components is large and the required working voltage is large, the working voltage can reach more than 200V, and the output power is large, if the main battery still supplies power to the vehicle-side electrical components at this time, the main battery will be easily damaged; and since the working voltage required by the automatic driving electrical components is small, generally only about 12V, when the automatic driving electrical components are still powered by the main battery, it will not affect the life of the main battery; therefore, when the vehicle controller detects that the charging interface of the main battery is started, it sends a power-off interface control instruction to the second power output interface to prohibit the vehicle-side electrical components from working and prevent damage to the main battery; in addition, according to the specific situation, the power supply interface control instruction or the power-off interface control instruction can be sent to the first power output interface. For example, when the software in the strategy calculation unit needs to be upgraded, the power supply interface control instruction can be sent to the first power output interface, thereby avoiding the problem that the strategy calculation unit cannot be upgraded during the charging process of the main battery in the existing electric vehicle; when the automatic driving electrical components do not need to work, the vehicle controller can also send a power-off interface control instruction to the first power output interface, thereby avoiding consuming the power of the main battery and reducing the charging time.

[0081] Optionally, the vehicle power supply control method further includes:

[0082] When the strategy calculation unit in the autonomous driving electrical components in the power supply state receives a power-on command, the software starts running; when the strategy calculation unit in the software running state receives a shutdown command, the software exits running.

[0083] Specifically, if the policy computing unit is directly started after being powered on, when an interface control instruction is generated due to an erroneous operation, the policy computing unit will be erroneously started. Frequent erroneous starts will have a serious impact on the policy computing unit and shorten the service life of the policy computing unit. Only when the interface control instruction controls the main battery to supply power to the policy computing unit and the policy computing unit receives a power-on instruction, the policy computing unit will be started and the calculation work of the automatic driving strategy will be performed. At the same time, the power-on and power-off of the policy computing unit adopt two interfaces. When the power-on instruction interface receives the power-on instruction, and then receives the power-on instruction or other instructions, the process currently executed by the policy computing unit will not be affected, that is, it will not be shut down or started again. Only when the shutdown instruction is received, the policy computing unit will be shut down, and after the shutdown, the shutdown instruction interface will not cause the policy computing unit to operate even if it receives an instruction again. Thus, when the policy computing unit adopts one interface to implement the power-on and power-off operation, the problem of erroneous startup or shutdown of the policy computing unit due to erroneous operation of the interface, which leads to calculation errors of the policy computing unit, is avoided, and the stability of the operation of the policy computing unit is improved.

[0084] Optionally, the vehicle power supply control method also includes: the strategy calculation unit in the autonomous driving electrical component, in the startup state, starts the software upgrade operation if it recognizes that the strategy calculation load meets the preset conditions or receives a software upgrade instruction.

[0085] Specifically, when the policy computing unit can be upgraded through OTA (Over-the-Air Technology), when the software of the policy computing unit has a higher version, if the load of the policy computing unit meets the preset conditions, such as when the electric vehicle is charging and the policy computing unit is not performing the autonomous driving policy calculation, the policy computing unit load is low at this time, and the software can be automatically upgraded, thereby avoiding the problem that the policy computing unit of the existing electric vehicle cannot upgrade the software when charging. If the policy computing unit receives a software upgrade instruction, if the user needs to upgrade the software of the policy computing unit, the software upgrade operation can be directly started to meet the user's needs.

[0086] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A vehicle-mounted power supply control system, comprising a main battery, vehicle-side electrical components and automatic driving electrical components, characterized in that: The main battery is provided with a first power output interface and a second power output interface; The first power output interface is connected to the autonomous driving electrical component, and the second power output interface is connected to the vehicle-end electrical component; the vehicle-end electrical component includes a power system of the electric vehicle; The main battery is used to control the power supply status of the two power output interfaces respectively according to the interface control instructions; The vehicle controller provided at the vehicle end is used to send a power supply interface control instruction to the first power output interface and the second power output interface when detecting a vehicle key switch closing signal; The vehicle controller is further configured to send a power-off interface control instruction to the first power output interface and the second power output interface when a disconnection signal of the vehicle key switch is detected; The vehicle controller is further configured to send a power supply interface control instruction to the first power output interface and send a power-off interface control instruction to the second power output interface when detecting that the charging interface of the main battery is started; An automatic driving DC conversion unit is also connected between the first power output interface and the automatic driving electrical component, for converting the voltage of the main battery into a first set voltage required by the automatic driving electrical component; A vehicle-end DC conversion unit is also connected between the second power output interface and the vehicle-end electrical component, for converting the voltage of the main battery into a second set voltage required by the vehicle-end electrical component.

2. The system according to claim 1, characterized in that The main battery is also provided with an interface control element, which is connected between the battery output terminal of the main battery and the two power output interfaces and is used to control the power supply status of the two power output interfaces respectively according to the interface control instruction.

3. The system according to claim 1, characterized in that The autonomous driving electrical component includes at least one of the following: A strategy calculation unit, used for calculating the autonomous driving strategy; Positioning equipment, used for vehicle positioning; Sensors are used to collect information.

4. The system according to claim 3, characterized in that The strategy calculation unit is also provided with: The power-on command interface is used to receive the power-on command to start the software; The shutdown command interface is used to receive a shutdown command to exit the software.

5. The system according to claim 4, characterized in that: The power-on command interface is connected to a user power-on switch provided at the vehicle end through an electrical circuit, and is used to receive a power-on command; The shutdown command interface is used to receive a shutdown command sent remotely via a wireless protocol.

6. The system according to claim 3, characterized in that Also includes: A built-in DC conversion circuit is connected between the first power output interface and the positioning device and sensor, and is connected to the strategy calculation unit, and is used to convert the voltage output by the first power output interface into DC under the control of the strategy calculation unit, and output it to the positioning device and sensor.

7. The system according to claim 1, characterized in that: The network equipment and security equipment arranged at the vehicle end are respectively connected to the first power output interface through the vehicle key switch.

8. The system according to claim 1, characterized in that: A safety device and / or a backup battery is also connected between each of the power output interfaces and the autonomous driving electrical components or the vehicle-end electrical components.

9. The system according to claim 1 or 2, characterized in that: The strategy calculation unit in the autonomous driving electrical component is also used to start a software upgrade operation if it is identified that the strategy calculation load state meets a preset condition or a software upgrade instruction is received.

10. An electric vehicle, characterized in that: It comprises the vehicle-mounted power supply control system as described in any one of claims 1-9; the vehicle-end electrical components comprise a power motor and vehicle-end electrical appliances.

11. A vehicle-mounted power supply control method, executed by the vehicle-mounted power supply control system according to any one of claims 1 to 9, characterized in that: The method comprises: The vehicle controller provided at the vehicle end, when detecting a vehicle key switch closing signal, sends a power supply interface control instruction to the first power output interface and the second power output interface, so as to respectively supply power to the vehicle end electrical components and the automatic driving electrical components; When the vehicle controller detects that the charging interface of the main battery is started, it sends a power supply interface control instruction to the first power output interface, and sends a power-off interface control instruction to the second power output interface.

12. The method according to claim 11, characterized in that Also includes: When the strategy calculation unit in the autonomous driving electrical component in the power supply state receives a power-on instruction, the software starts running; When the policy calculation unit in the software running state receives a shutdown instruction, the software is exited.

13. The method according to claim 11, characterized in that Also includes: The strategy calculation unit in the autonomous driving electrical component starts a software upgrade operation if it recognizes that the strategy calculation load state meets a preset condition or receives a software upgrade instruction.

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