Forced power-off system, method and device in driving process of new energy automobile

Abstract

The invention provides a forced power-off system, method and device in the driving process of a new energy automobile, and relates to the technical field of new energy automobile electrical systems.The system comprises an automobile body control system, a one-key start key, a first ignition power source and a second ignition power source; the vehicle body control system is respectively connected with the one-key start key, the first ignition power supply and the second ignition power supply; the vehicle body control system is used for receiving a forced power-off instruction sent by the one-key start key and controlling the power-on and power-off states of the first ignition power source and the second ignition power source in the forced power-off process based on the forced power-off instruction. The first ignition power supply is used for supplying power to the air-conditioning system, the vehicle machine system and the battery management system; the second ignition power source is used for supplying power to the steering system, the braking system, the whole vehicle control system and the collision system. The safety of forced power-off of the vehicle in the running process can be remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicle electrical systems, and in particular to a system, method and device for forcing a new energy vehicle to power off during driving. Background Art

[0002] At present, when a car is driving at high speed, the engine speed (traditional fuel vehicles) or the drive motor speed (new energy vehicles) is controlled by the user stepping on the accelerator pedal. In addition, for safety reasons, it is also necessary to increase emergency strategies when a stall occurs. In the event of a stall, the power supply of the entire vehicle is cut off immediately, and then the steering wheel is controlled and the brake pedal is stepped on to ensure that the vehicle stops safely.

[0003] After the vehicle power is pulled down to the OFF position, all devices using the KL15 power supply will stop working due to power outage, among which steering and braking are particularly critical. Relevant technologies have proposed that the braking systems of traditional fuel vehicles and the first generation of new energy vehicles usually use vacuum assistance. Because of the existence of a vacuum tank, even if the KL15 power supply is lost, a certain number of pedal operations can be performed, but the number of times the vacuum assistance pedal is used is limited, and with the use of the air tank in the vacuum assistance, the pedal will become more and more difficult to step on. If electronic steering assistance or electronic brake assistance is used, once the KL15 power supply is lost, it will be difficult for the user to control the steering and braking systems. In this special scenario where personnel are highly nervous, it is difficult to ensure the safe stop of the vehicle. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a system, method and device for forced power-off during driving of a new energy vehicle, which can significantly improve the safety of forced power-off during driving of the vehicle.

[0005] In the first aspect, an embodiment of the present invention provides a forced power-off system during the driving process of a new energy vehicle, and the forced power-off system during the driving process of the new energy vehicle includes: a body control system, a one-touch start button, a first ignition power supply and a second ignition power supply, and the body control system is respectively connected to the one-touch start button, the first ignition power supply and the second ignition power supply; wherein the body control system is used to receive a forced power-off instruction sent by the one-touch start button, and control the on and off states of the first ignition power supply and the second ignition power supply during the forced power-off process based on the forced power-off instruction; the first ignition power supply is used to power the air-conditioning system, the vehicle system and the battery management system; the second ignition power supply is used to power the steering system, the braking system, the vehicle control system and the collision system.

[0006] In one embodiment, the first ignition power supply includes: a first relay, and the second ignition power supply includes: a second relay; wherein the first relay is used to control the power supply state of the first ignition power supply; and the second relay is used to control the power supply state of the second ignition power supply.

[0007] In one embodiment, the forced power-off system during the driving of the new energy vehicle also includes: a vehicle control system; wherein the vehicle control system is used to send the vehicle speed information of the new energy vehicle to the body control system, so that the vehicle control system controls the opening and closing states of the first relay and the second relay.

[0008] In one embodiment, the forced power-off system during the driving of the new energy vehicle also includes: a brake pedal switch; wherein the brake pedal switch is used to remain connected when the first relay is closed to brake the new energy vehicle during the forced power-off process, and is disconnected when the second relay is closed to complete the forced power-off process of the entire vehicle.

[0009] In a second aspect, an embodiment of the present invention further provides a method for forced power-off during driving of a new energy vehicle, and the method is applied to a forced power-off system during driving of a new energy vehicle as provided in any one of the first aspects, and the method includes: obtaining a forced power-off instruction sent by a one-touch start button and vehicle speed information sent by a whole vehicle control system, and determining the start state of the forced power-off process according to the interaction state of the one-touch start button and the vehicle speed information; when starting the forced power-off process, controlling the first relay of the first ignition power supply to close, and adjusting the on / off state of the second relay of the second ignition power supply according to the vehicle speed information, so as to complete the forced power-off process of the whole vehicle when the second relay is closed.

[0010] In one embodiment, the step of determining the start state of the forced power-off process based on the interaction state of the one-touch start button and the vehicle speed information includes: when the vehicle speed information is greater than a preset vehicle speed threshold, performing one-touch start erroneous operation identification processing based on the interaction state of the one-touch start button; if the single triggering duration of the one-touch start button is greater than the preset time threshold, or the number of triggering times within a preset time interval is greater than a preset number threshold, then starting the forced power-off process.

[0011] In one embodiment, the on / off state of the second relay of the second ignition power supply is adjusted according to the vehicle speed information to complete the steps of the forced power-off process of the entire vehicle when the second relay is closed, including: when the vehicle speed information is less than a preset vehicle speed threshold, the second relay of the second ignition power supply is controlled to close to end the forced power-off process of the entire vehicle.

[0012] In one embodiment, the method also includes: if the vehicle speed information is not less than a preset vehicle speed threshold, controlling the second relay to remain in an open state, so that the second ignition power supply supplies power to the steering system and braking system of the new energy vehicle, so that the steering system and braking system remain in a normal working state during the forced power-off process.

[0013] In one embodiment, after controlling the second relay to remain in an open state so that the second ignition power supply supplies power to the steering system and braking system of the new energy vehicle, the method includes: recording the duration of the vehicle speed information being no less than a preset vehicle speed threshold, and controlling the second relay to close when the duration is greater than the preset duration threshold.

[0014] In a third aspect, an embodiment of the present invention further provides a forced power-off device during the driving process of a new energy vehicle. The device is applied to a forced power-off system during the driving process of a new energy vehicle as provided in any one of the first aspects, and the device includes: an information acquisition module, which acquires the forced power-off instruction sent by a one-touch start button and the vehicle speed information sent by the vehicle control system, and determines the start state of the forced power-off process according to the interaction state of the one-touch start button and the vehicle speed information; a relay control module, which controls the first relay of the first ignition power supply to be closed when the forced power-off process is started, and adjusts the on-off state of the second relay of the second ignition power supply according to the vehicle speed information, so as to complete the forced power-off process of the whole vehicle when the second relay is closed.

[0015] In a fourth aspect, an embodiment of the present invention further provides a server, comprising a processor and a memory, wherein the memory stores computer executable instructions that can be executed by the processor, and the processor executes the computer executable instructions to implement any one of the methods provided in the second aspect.

[0016] In a fifth aspect, an embodiment of the present invention further provides a computer-readable storage medium, which stores computer-executable instructions. When the computer-executable instructions are called and executed by a processor, the computer-executable instructions prompt the processor to implement any one of the methods provided in the second aspect.

[0017] The embodiments of the present invention bring the following beneficial effects:

[0018] The embodiment of the present invention provides a system, method and device for forced power-off during driving of a new energy vehicle. The system includes: a body control system, a one-touch start button, a first ignition power supply and a second ignition power supply. The body control system is connected to the one-touch start button, the first ignition power supply and the second ignition power supply respectively; wherein the body control system is used to receive a forced power-off instruction sent by the one-touch start button, and control the on and off states of the first ignition power supply and the second ignition power supply during forced power-off based on the forced power-off instruction; the first ignition power supply is used to power an air-conditioning system, a vehicle system and a battery management system; the second ignition power supply is used to power a steering system, a braking system, a vehicle control system and a collision system. The system, method and device for forced power-off during driving of a new energy vehicle provided by the embodiment of the present invention can avoid cutting off the KL15 power supply of all electrical equipment when forced power-off during driving of the new energy vehicle, causing failure of the key steering system and braking system, and support the user to stop the vehicle or reach a safe speed by providing power, and finally disconnect all power supplies, thereby significantly improving the safety of forced power-off of the vehicle during driving.

[0019] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description, claims and drawings.

[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic diagram of the structure of a forced power-off system for a new energy vehicle during driving provided by an embodiment of the present invention;

[0023] Figure 2 A schematic diagram of a flow chart of a method for forcibly powering off a new energy vehicle during driving provided by an embodiment of the present invention;

[0024] Figure 3 A schematic diagram of a specific process of a method for forcibly powering off a new energy vehicle during driving provided by an embodiment of the present invention;

[0025] Figure 4 A schematic diagram of a flow chart of a method for determining a forced power-off access condition provided by an embodiment of the present invention;

[0026] Figure 5 A schematic diagram of a flow chart of a forced power-off execution method provided by an embodiment of the present invention;

[0027] Figure 6 A schematic diagram of the structure of a forced power-off device for a new energy vehicle during driving provided by an embodiment of the present invention;

[0028] Figure 7 A schematic diagram of the structure of a server provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described in combination with the embodiments below. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] When a car is driving at high speed, the engine speed (traditional fuel car) or the drive motor speed (new energy car) is controlled by the user stepping on the accelerator pedal. In addition, for safety reasons, it is also necessary to add an emergency strategy when a stall occurs, so that when the stall occurs, the power of the whole vehicle can be cut off immediately, and then the steering wheel can be controlled and the brake pedal can be stepped on to ensure that the vehicle stops safely. At present, power switching mainly relies on two forms of switches, one is a mechanical key insertion ignition switch, and the other is a finger-pressed one-touch start button. No matter which one, after the forced power-off is successfully implemented, the power of the whole vehicle will be quickly pulled down to the OFF position. Among them, the one-touch start switch is designed to prevent users from operating it by mistake, and an anti-misoperation strategy is set at the beginning of the design.

[0031] After the vehicle power is pulled down to the OFF position, all devices using the KL15 power supply will stop working due to power failure, among which steering and braking are particularly critical. The relevant technology proposes that the braking systems of traditional fuel vehicles and the first generation of new energy vehicles usually adopt vacuum assistance. Because there is a vacuum tank, even if the KL15 power supply is lost, a certain number of pedal processing can be performed, but the number of times the vacuum assistance uses the pedal is limited, and with the use of the air storage tank in the vacuum assistance, the pedal will become more and more difficult to step on. If electronic steering assistance or electronic brake assistance is used, once the KL15 power supply is lost, it will be difficult for the user to control the steering and braking systems. In this special scenario where personnel are highly nervous, it is difficult to ensure that the vehicle stops safely. Based on this, the forced power-off system, method and device for the new energy vehicle during driving provided by the present invention can avoid cutting off the KL15 power supply of all electrical equipment when the new energy vehicle is forced to power off during driving, resulting in failure of the key steering system and braking system. By providing power to support the user to stop the vehicle or reach a safe speed, all power supplies are finally disconnected, thereby significantly improving the safety of the vehicle being forced to power off during driving.

[0032] To facilitate understanding of this embodiment, firstly, a method for forced power-off during driving of a new energy vehicle disclosed in an embodiment of the present invention is described in detail. The method is applied to a forced power-off system during driving of a new energy vehicle. To facilitate understanding of the forced power-off system during driving of a new energy vehicle, an embodiment of the present invention provides a structural schematic diagram of a forced power-off system during driving of a new energy vehicle, as shown in FIG. Figure 1 As shown, the forced power-off system during the driving of the new energy vehicle includes: a body control system, a one-touch start button, a first ignition power supply and a second ignition power supply, and the body control system is connected to the one-touch start button, the first ignition power supply and the second ignition power supply respectively.

[0033] The body control system is used to receive the forced power-off command sent by the one-touch start button, and control the on and off status of the first ignition power supply and the second ignition power supply during the forced power-off process based on the forced power-off command. When the vehicle is driving, the body control system monitors the one-touch start switch status, the current vehicle speed and the gear status in real time. Once it is determined that the forced power-off conditions are met, it will immediately enter the forced power-off process; in this process, the body control system immediately cuts off the IG1 power supply, and reads the vehicle speed to determine whether to cut off the IG2 power supply. Once the vehicle speed conditions are met or the determination process times out, IG2 is immediately cut off, thereby completing the forced power-off process of the entire vehicle.

[0034] The first ignition power supply is used to supply power to the air conditioning system, the vehicle system and the battery management system, wherein the first ignition power supply includes: a first relay (ie, the IG1 relay), and the first relay is used to control the power supply state of the first ignition power supply.

[0035] The second ignition power supply is used to power the steering system, the braking system, the vehicle control system and the collision system, wherein the second ignition power supply includes: a second relay (ie, the IG2 relay), and the second relay is used to control the power supply state of the second ignition power supply.

[0036] In one embodiment, the present invention focuses on providing an independent power supply to components that are highly safety-related to forced power-off through an early power distribution design. During the forced power-off process, the power supplies of these electrical components are retained based on whether the vehicle speed exists, so that users can safely operate the steering and braking systems. Specifically, the systems controlled by the first ignition power supply and the second ignition power supply can be dynamically adjusted according to the vehicle type and the vehicle driving environment. In actual applications, each system can be connected to the first ignition power supply and the second ignition power supply, and one of the power supply modes can be turned off according to a preset power distribution strategy. For example, if a new energy vehicle is traveling in a cold area, and the temperature sensor detects that the outdoor temperature is less than a preset temperature threshold, at this time, the power supply of the system closely related to the braking function of the braking system (for example, a thermal circulation system) can be switched from the first ignition power supply to the second ignition power supply.

[0037] In addition, the forced power-off system during the driving of the new energy vehicle also includes: a vehicle control system; wherein the vehicle control system is used to send the speed information of the new energy vehicle to the body control system, so that the vehicle control system controls the opening and closing states of the first relay and the second relay.

[0038] Furthermore, the forced power-off system during the driving of the new energy vehicle also includes: a brake pedal switch; wherein the brake pedal switch is used to remain connected when the first relay is closed to brake the new energy vehicle during the forced power-off process, and is disconnected when the second relay is closed to complete the forced power-off process of the entire vehicle.

[0039] based on Figure 1 The structure diagram of the forced power-off system during the driving process of the new energy vehicle is shown in FIG. 1 , and the forced power-off method during the driving process of the new energy vehicle is described in detail in the embodiment of the present invention. Figure 2 The flowchart of a method for forcibly powering off a new energy vehicle during driving is shown in FIG. 1 , and the method mainly includes the following steps S202 to S204:

[0040] Step S202, obtain the forced power-off instruction sent by the one-touch start button and the vehicle speed information sent by the vehicle control system, and determine the start state of the forced power-off process based on the interaction state of the one-touch start button and the vehicle speed information. In one embodiment, the vehicle body control system receives the input of the one-touch start button (or mechanical key ignition switch) to switch the low-voltage power mode (the power gears include OFF, ACC, ON and READY).

[0041] Step S204, when the forced power-off process is started, the first relay of the first ignition power source is controlled to be closed, and the on-off state of the second relay of the second ignition power source is adjusted according to the vehicle speed information, so that when the second relay is closed, the forced power-off process of the whole vehicle is completed. In one embodiment, the body control system controls the output of 2 IG power sources, of which 1 IG power source is not affected by the driving speed, such as the air conditioning system, the human-computer interaction system, the battery management system, etc.; the other 1 is affected by the driving speed, such as the steering system, the braking system, the whole vehicle control system and the collision system. Under normal circumstances (no forced power-off is performed), 1 IG power source is powered on and off at the same time.

[0042] The method for forced power-off during driving of the new energy vehicle provided in the embodiment of the present invention can solve the problem that all electrical equipment in the current vehicle loses KL15 power during forced power-off, resulting in the failure of key steering and braking systems to work. It can avoid the user from obviously feeling the steering feel and brake pedal become hard, thereby losing confidence in the deceleration process of the entire vehicle and affecting the safe stopping of the vehicle. It can significantly improve the safety of forced power-off of the vehicle during driving.

[0043] See also Figure 3 The specific flow chart of a method for forcibly shutting down a new energy vehicle during driving is shown in FIG. 1 . The embodiment of the present invention also provides an implementation method for forcibly shutting down a new energy vehicle during driving. For details, see (1) to (2) below:

[0044] (1) See Figure 4 The flowchart of a method for judging the conditions for forced power-off access is shown in the figure. When the vehicle speed information is greater than the preset vehicle speed threshold, the one-button start error operation is judged and processed according to the interactive state of the one-button start button. If the single triggering duration of the one-button start button is greater than the preset time threshold, or the number of triggers within the preset time interval is greater than the preset number threshold, the forced power-off process is started. In other words, when the user inputs the forced power-off instruction, the key is to distinguish whether the user triggers it by mistake or for real need to force power off. In actual applications, two judgment methods are introduced for the one-button start switch. One is to press the one-button start switch for a long time greater than 3 seconds, and the other is to press the one-button start switch more than 3 times within 2 seconds. If any one of the conditions is met, the forced power-off process will continue to be executed. If it is not met, the forced power-off process will be exited immediately.

[0045] (2) See Figure 5A flow chart of a forced power-off execution method is shown. When the vehicle speed information is less than a preset vehicle speed threshold, the second relay of the second ignition power supply is controlled to be closed to end the forced power-off process of the entire vehicle. In one embodiment, if the vehicle speed information is not less than the preset vehicle speed threshold, the second relay is controlled to remain in an open state, so that the second ignition power supply supplies energy to the steering system and the braking system of the new energy vehicle, so that the steering system and the braking system maintain a normal working state during the forced power-off process, and the duration of the vehicle speed information being not less than the preset vehicle speed threshold is recorded, and when the duration is greater than the preset duration threshold, the second relay is controlled to be closed.

[0046] That is to say, during the forced power-off process, the body control system first immediately disconnects the IG1 power supply, and the relevant electrical equipment stops the KL15 power supply and immediately enters the stop working state. Then the body control system reads the vehicle speed signal fed back by the vehicle control system. If the vehicle speed is greater than or equal to 5km / h, the IG2 power supply is temporarily maintained to ensure that the steering system and braking system can work normally. Until the vehicle speed is less than 5km / h or the time exceeds 10 seconds (whichever comes first), the IG2 power supply is immediately stopped and the forced power-off process ends.

[0047] In summary, the present invention can, through the early power distribution design, independently provide a power supply for the components that are highly related to the safety of forced power-off. During the forced power-off process, the power of these electrical components is retained according to whether there is a vehicle speed, so that the user can safely operate the steering and braking systems. If the system determines that the current vehicle speed can stop safely, it will continue to cut off all power supplies. At the same time, when a certain time is reached, all power supplies will be cut off.

[0048] For the method for forcibly shutting off power during driving of a new energy vehicle provided in the above-mentioned embodiment, an embodiment of the present invention provides a device for forcibly shutting off power during driving of a new energy vehicle, which is applied to a system for forcibly shutting off power during driving of a new energy vehicle, see Figure 6 The structure diagram of a forced power-off device for a new energy vehicle during driving is shown in FIG. The device includes the following parts:

[0049] The information acquisition module 602 acquires the forced power-off instruction sent by the one-touch start button and the vehicle speed information sent by the vehicle control system, and determines the start state of the forced power-off process according to the interaction state of the one-touch start button and the vehicle speed information;

[0050] The relay control module 604 controls the first relay of the first ignition power supply to close when the forced power-off process is started, and adjusts the on-off state of the second relay of the second ignition power supply according to the vehicle speed information, so as to complete the forced power-off process of the whole vehicle when the second relay is closed.

[0051] The forced power-off device during driving of the new energy vehicle provided in the embodiment of the present application can significantly improve the safety of forced power-off of the vehicle during driving.

[0052] In one embodiment, when performing the step of determining the start state of the forced power-off process based on the interaction state of the one-button start button and the vehicle speed information, the above-mentioned information acquisition module 602 is also used to: obtain the forced power-off instruction sent by the one-button start button, and the vehicle speed information sent by the vehicle control system, and determine the start state of the forced power-off process based on the interaction state of the one-button start button and the vehicle speed information.

[0053] In one embodiment, when adjusting the on / off state of the second relay of the second ignition power supply to complete the step of the forced power-off process of the entire vehicle when the second relay is closed, the above-mentioned relay control module 604 is also used to: when the vehicle speed information is less than a preset vehicle speed threshold, control the second relay of the second ignition power supply to close to end the forced power-off process of the entire vehicle.

[0054] In one embodiment, the relay control module 604 is also used to: if the vehicle speed information is not less than a preset vehicle speed threshold, control the second relay to remain in an open state, so that the second ignition power supply supplies energy to the steering system and braking system of the new energy vehicle, so that the steering system and braking system remain in a normal working state during the forced power-off process.

[0055] In one embodiment, after the step of controlling the second relay to remain in an open state so that the second ignition power supply supplies energy to the steering system and braking system of the new energy vehicle, the above-mentioned relay control module 604 is also used to: record the duration of the vehicle speed information being not less than a preset vehicle speed threshold, and control the second relay to close when the duration is greater than the preset duration threshold.

[0056] The device provided in the embodiment of the present invention has the same implementation principle and technical effects as those of the aforementioned method embodiment. For the sake of brief description, for matters not mentioned in the device embodiment, reference may be made to the corresponding contents in the aforementioned method embodiment.

[0057] An embodiment of the present invention provides a server. Specifically, the server includes a processor and a storage device. The storage device stores a computer program, and when the computer program is executed by the processor, it executes the method described in any one of the above-mentioned embodiments.

[0058] Figure 7 A structural diagram of a server provided in an embodiment of the present invention, the server 100 includes: a processor 70, a memory 71, a bus 72 and a communication interface 73, wherein the processor 70, the communication interface 73 and the memory 71 are connected via the bus 72; the processor 70 is used to execute an executable module stored in the memory 71, such as a computer program.

[0059] The memory 71 may include a high-speed random access memory (RAM), and may also include a non-volatile memory, such as at least one disk memory. The communication connection between the system network element and at least one other network element is realized through at least one communication interface 73 (which may be wired or wireless), and the Internet, wide area network, local area network, metropolitan area network, etc. may be used.

[0060] The bus 72 may be an ISA bus, a PCI bus, or an EISA bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 7 Only one bidirectional arrow is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0061] Among them, the memory 71 is used to store programs, and the processor 70 executes the program after receiving the execution instruction. The method executed by the device for flow process definition disclosed in any embodiment of the above-mentioned embodiment of the present invention can be applied to the processor 70 or implemented by the processor 70.

[0062] The processor 70 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the hardware integrated logic circuit or software instructions in the processor 70. The above processor 70 can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the present invention can be implemented or executed. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor. The steps of the method disclosed in the embodiments of the present invention can be directly embodied as a hardware decoding processor to be executed, or can be executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory 71, and the processor 70 reads the information in the memory 71 and completes the steps of the above method in combination with its hardware.

[0063] The computer program product of the readable storage medium provided in the embodiment of the present invention includes a computer-readable storage medium storing program code, and the instructions included in the program code can be used to execute the method described in the previous method embodiment. The specific implementation can be referred to the previous method embodiment, which will not be repeated here.

[0064] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc., which can store program codes.

[0065] Finally, it should be noted that the above-described embodiments are only specific implementations of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention is described in detail with reference to the above-described embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-described embodiments within the technical scope disclosed by the present invention, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A forced power-off system for a new energy vehicle during driving, characterized in that: The forced power-off system during the driving of the new energy vehicle comprises: a body control system, a one-touch start button, a first ignition power supply and a second ignition power supply, wherein the body control system is connected to the one-touch start button, the first ignition power supply and the second ignition power supply respectively; wherein, The vehicle body control system is used to receive the forced power-off instruction sent by the one-touch start button, and control the on and off states of the first ignition power supply and the second ignition power supply during the forced power-off process based on the forced power-off instruction; The first ignition power supply is used to power the air conditioning system, the vehicle system and the battery management system; The second ignition power supply is used to supply power to the steering system, the braking system, the vehicle control system and the collision system.

2. The method for forcibly shutting down a new energy vehicle during driving according to claim 1, characterized in that: The first ignition power supply includes: a first relay, and the second ignition power supply includes: a second relay; wherein, The first relay is used to control the power supply state of the first ignition power supply; The second relay is used to control the power supply state of the second ignition power supply.

3. The method for forcibly shutting down the new energy vehicle during driving according to claim 1, characterized in that: The forced power-off system during the driving of the new energy vehicle also includes: a vehicle control system; wherein, The whole vehicle control system is used to send the speed information of the new energy vehicle to the body control system, so that the whole vehicle control system controls the on and off states of the first relay and the second relay.

4. The method for forcibly shutting down the new energy vehicle during driving according to claim 1, characterized in that: The forced power-off system during the driving of the new energy vehicle also includes: a brake pedal switch; wherein, The brake pedal switch is used to remain connected when the first relay is closed to brake the new energy vehicle during the forced power-off process, and is disconnected when the second relay is closed to complete the forced power-off process of the entire vehicle.

5. A method for forcibly shutting down a new energy vehicle during driving, characterized in that: The method is applied to the forced power-off system during driving of a new energy vehicle as claimed in any one of claims 1 to 4, and the method comprises: Obtaining a forced power-off instruction sent by a one-touch start button and vehicle speed information sent by a vehicle control system, and determining the start state of the forced power-off process according to the interaction state of the one-touch start button and the vehicle speed information; When the forced power-off process is started, the first relay of the first ignition power supply is controlled to be closed, and the on-off state of the second relay of the second ignition power supply is adjusted according to the vehicle speed information, so that the forced power-off process of the entire vehicle is completed when the second relay is closed.

6. The method for forcibly shutting down the new energy vehicle during driving according to claim 5, characterized in that: The step of determining the start state of the forced power-off process according to the interaction state of the one-touch start button and the vehicle speed information includes: When the vehicle speed information is greater than a preset vehicle speed threshold, performing one-button start misoperation identification processing according to the interactive state of the one-button start button; If the single triggering duration of the one-key start button is greater than the preset time threshold, or the number of triggering times within the preset time interval is greater than the preset number threshold, the forced power-off process is started.

7. The method for forcibly shutting down the new energy vehicle during driving according to claim 5, characterized in that: The steps of adjusting the on / off state of the second relay of the second ignition power supply according to the vehicle speed information so as to complete the vehicle forced power-off process when the second relay is turned off include: When the vehicle speed information is less than a preset vehicle speed threshold, the second relay of the second ignition power supply is controlled to be closed to end the forced power-off process of the entire vehicle.

8. The method for forcibly shutting down the new energy vehicle during driving according to claim 7, characterized in that: The method further comprises: If the vehicle speed information is not less than a preset vehicle speed threshold, the second relay is controlled to remain in an open state, so that the second ignition power supply supplies energy to the steering system and the braking system of the new energy vehicle, so that the steering system and the braking system maintain a normal working state during the forced power-off process.

9. The method for forcibly shutting down the new energy vehicle during driving according to claim 8, characterized in that: After the step of controlling the second relay to remain in an open state so that the second ignition power supply supplies energy to the steering system and the braking system of the new energy vehicle, the method includes: The duration during which the vehicle speed information is not less than a preset vehicle speed threshold is recorded, and when the duration is greater than the preset duration threshold, the second relay is controlled to be closed.

10. A forced power-off device for a new energy vehicle during driving, characterized in that: The device is applied to the forced power-off system of the new energy vehicle during driving as claimed in any one of claims 1 to 4, and the device comprises: An information acquisition module is used to acquire the forced power-off instruction sent by the one-touch start button and the vehicle speed information sent by the vehicle control system, and determine the start state of the forced power-off process according to the interaction state of the one-touch start button and the vehicle speed information; The relay control module controls the first relay of the first ignition power supply to be closed when the forced power-off process is started, and adjusts the on-off state of the second relay of the second ignition power supply according to the vehicle speed information, so as to complete the forced power-off process of the whole vehicle when the second relay is closed.

11. A server, characterized in that: The method comprises a processor and a memory, wherein the memory stores computer executable instructions that can be executed by the processor, and the processor executes the computer executable instructions to implement the method according to any one of claims 5 to 9.

12. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are called and executed by a processor, the computer-executable instructions prompt the processor to implement the method according to any one of claims 5 to 9.

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