Battery pack safety protection method and system in vehicle bottoming collision

Abstract

The present invention discloses a method and system for protecting a battery pack during a bottoming collision of an automobile, the method comprising the following steps: obtaining an obstacle height value, an initial gap value between a battery pack and the ground, and a horizontal distance value between a vehicle and the obstacle; when it is detected that the initial gap value is less than or equal to the obstacle height value, obtaining a vehicle suspension device state; when it is detected that the vehicle suspension device state is in an adjustable state, and according to the horizontal distance value, controlling the vehicle to execute a suspension adjustment warning mode; when it is detected that the vehicle suspension device state is in an unadjustable state, and according to the horizontal distance value, controlling the vehicle to execute a suspension unadjustable warning mode; therefore, road obstacles can be identified before a bottoming collision occurs, and it can be determined whether a battery pack will have a bottoming collision when the vehicle is driving, and based on this, the problem of avoiding the bottoming collision and reducing the impact energy and damage probability of the bottoming collision is solved.

Description

Technical Field

[0001] The present invention relates to the field of battery pack safety, and in particular to a method and system for protecting a battery pack during a vehicle bottoming collision. Background Art

[0002] As a core component of electric vehicles, the battery pack is generally hung on the vehicle chassis. When the vehicle is driving on the road and encounters a road with poor conditions, such as obstacles such as debris, potholes, and bumps, and the ground clearance of the bottom of the battery pack is lower than the obstacles on the road, the vehicle's battery pack can easily collide and scratch against the ground obstacles. This accident is called a battery pack bottom collision.

[0003] In the era when electric vehicles were not yet popular, vehicle bottoming accidents did not receive much attention because bottoming accidents of traditional fuel vehicles generally only cause scratches on the chassis, which will not cause major damage to the vehicle or personal injury. However, for electric vehicles, if the bottom of the battery pack is severely bumped or squeezed, it is likely to squeeze the internal battery cells, causing the battery pack to short-circuit and electrolyte leakage, thereby causing the vehicle to spontaneously combust. With the increasing popularity of electric vehicles, there are more and more accidents of vehicle spontaneous combustion caused by bottoming collisions of vehicle battery packs. Therefore, whether the vehicle can avoid bottoming collisions of vehicle battery packs and reduce the impact of bottoming collisions on battery packs is related to the personal and property safety of drivers and passengers.

[0004] According to the latest statistical research data from CIDAS in 2022, 49% of new energy vehicle fire accidents occurred during vehicle driving, of which 29% were caused by vehicle collisions causing fires. 75% of vehicle fires occurred in the battery pack, and 71% of battery pack fires were caused by bottoming collisions at the bottom of the battery pack. Therefore, it is very important to prevent the battery pack from bottoming out or reduce damage to the battery pack in bottoming collisions.

[0005] Currently, in the relevant technology, the damage caused by bottom collision is generally reduced by adding an anti-collision beam in front of the battery pack, strengthening the bottom structure of the battery pack, or adding a buffer at the bottom of the battery pack. These safety measures are relatively passive and cannot avoid or reduce the impact of the collision before the collision occurs. Summary of the invention

[0006] The present invention provides a method and system for protecting the battery pack during a bottoming collision of a vehicle, which can identify road obstacles before the bottoming collision occurs, determine whether the battery pack will have a bottoming collision when the vehicle is driving, and based on this, solve the problem of avoiding the bottoming collision and reducing the impact energy and damage probability of the bottoming collision.

[0007] In a first aspect, a method for protecting a battery pack during a vehicle bottoming collision is provided, comprising the following steps:

[0008] Obtain the obstacle height value, the initial gap value between the battery pack and the ground, and the horizontal distance value between the vehicle and the obstacle;

[0009] When it is detected that the initial gap value is less than or equal to the obstacle height value, obtaining a state of a vehicle suspension device;

[0010] When it is detected that the state of the vehicle suspension device is in an adjustable state and according to the horizontal distance value, the vehicle is controlled to execute a suspension adjustment warning mode;

[0011] When it is detected that the state of the vehicle suspension device is an unadjustable state and according to the horizontal distance value, the vehicle is controlled to execute a suspension unadjustable warning mode.

[0012] According to the first aspect, in a first possible implementation manner of the first aspect, the step of “when detecting that the state of the vehicle suspension device is an adjustable state and according to the horizontal distance value, controlling the vehicle to execute the suspension adjustment warning mode” specifically includes the following steps:

[0013] When it is detected that the state of the vehicle suspension device is an adjustable state, controlling the vehicle suspension device to lift a height;

[0014] When the vehicle suspension device is detected to be lifted, the adjustment gap value between the battery pack and the ground is obtained;

[0015] When it is detected that the adjustment gap value is greater than the obstacle height value, the prompt alarm device and the video recording device are controlled not to be started;

[0016] When it is detected that the adjustment gap value is less than or equal to the obstacle height value, and the horizontal distance value is greater than or equal to the preset safety distance value, control to start the video recording device and start the primary early warning reminder of the prompt alarm device;

[0017] When it is detected that the adjustment gap value is less than or equal to the obstacle height value, and the horizontal distance value is less than the preset safety distance value, the video recording device and the high-level early warning reminder of the prompt alarm device are controlled to be started.

[0018] According to a first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, after the step of “when detecting that the vehicle suspension device is in an adjustable state, controlling the vehicle suspension device to lift a height”, the following steps are specifically included:

[0019] Obtain the running time of the vehicle running to the obstacle and the adjustment time of the vehicle suspension device to complete the adjustment;

[0020] When it is detected that the running time is less than or equal to the adjustment time, the speed of increasing the lifting height of the vehicle suspension device and reducing the vehicle running speed are controlled until it is detected that the running time is greater than the adjustment time.

[0021] According to the second possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, the step of “when detecting that the state of the vehicle suspension device is an unadjustable state and according to the horizontal distance value, controlling the vehicle to execute the suspension unadjustable warning mode” specifically includes the following steps:

[0022] When it is detected that the horizontal distance value is greater than or equal to the preset safety distance value, control to start the video recording device and start the primary early warning reminder of the prompt alarm device;

[0023] When it is detected that the horizontal distance value is less than the preset safety distance value, the video recording device is controlled to start and the advanced early warning reminder of the prompt alarm device is started.

[0024] According to the third possible implementation manner of the first aspect, in the fourth possible implementation manner of the first aspect, after the step of “controlling to start the video recording device and starting the advanced early warning reminder of the prompt alarm device”, the following steps are specifically included:

[0025] Get vehicle braking information;

[0026] When the vehicle braking information is not obtained, the vehicle running speed is controlled to be reduced.

[0027] According to the fourth possible implementation manner of the first aspect, in the fifth possible implementation manner of the first aspect, before the step of “obtaining the obstacle height value, the initial gap value between the battery pack and the ground, and the horizontal distance value between the vehicle and the obstacle”, the following steps are specifically included:

[0028] Get the vehicle running speed;

[0029] When the running speed of the vehicle is greater than zero, the obstacle height value, the initial gap value between the battery pack and the ground, and the horizontal distance value between the vehicle and the obstacle are obtained.

[0030] In a second aspect, a battery pack safety protection system for a vehicle bottoming collision is provided, comprising:

[0031] A data acquisition module is used to obtain the obstacle height value, the initial gap value between the battery pack and the ground, and the horizontal distance value between the vehicle and the obstacle;

[0032] a state acquisition module, which is in communication with the data acquisition module and is used to acquire the state of the vehicle suspension device when it is detected that the initial gap value is less than or equal to the obstacle height value;

[0033] The early warning adjustment module is communicatively connected with the data acquisition module and the state acquisition module, and is used to control the vehicle to execute a suspension adjustment early warning mode when it is detected that the vehicle suspension device is in an adjustable state and according to the horizontal distance value; and to control the vehicle to execute a suspension non-adjustable early warning mode when it is detected that the vehicle suspension device is in an unadjustable state and according to the horizontal distance value.

[0034] According to the second aspect, in a first possible implementation method of the second aspect, the early warning adjustment module is used to control the lifting height of the vehicle suspension device when it is detected that the state of the vehicle suspension device is an adjustable state; when the lifting height of the vehicle suspension device is detected, obtain the adjustment gap value between the battery pack and the ground; when it is detected that the adjustment gap value is greater than the obstacle height value, control not to start the prompt alarm device and the video recording device; when it is detected that the adjustment gap value is less than or equal to the obstacle height value, and the horizontal distance value is greater than or equal to the preset safety distance value, control to start the video recording device and start the primary early warning reminder of the prompt alarm device; when it is detected that the adjustment gap value is less than or equal to the obstacle height value, and the horizontal distance value is less than the preset safety distance value, control to start the video recording device and start the advanced early warning reminder of the prompt alarm device.

[0035] According to the first possible implementation method of the first aspect, in the second possible implementation method of the first aspect, the early warning adjustment module is used to obtain the running time of the vehicle running to the obstacle and the adjustment time of the vehicle suspension device; when it is detected that the running time is less than or equal to the adjustment time, the speed of increasing the lifting height of the vehicle suspension device and reducing the vehicle running speed are controlled until it is detected that the running time is greater than the adjustment time.

[0036] According to the second possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, the early warning adjustment module is used to obtain vehicle braking information; when the vehicle braking information is not obtained, controlling to reduce the vehicle running speed.

[0037] Compared with the prior art, the advantages of the present invention are as follows: the present invention first obtains the obstacle height value, the initial gap value between the battery pack and the ground, and the horizontal distance value between the vehicle and the obstacle; when it is detected that the initial gap value is less than or equal to the obstacle height value, the vehicle suspension device state is obtained; when it is detected that the vehicle suspension device state is an adjustable state, and according to the horizontal distance value, the vehicle is controlled to execute the suspension adjustment warning mode; when it is detected that the vehicle suspension device state is an unadjustable state, and according to the horizontal distance value, the vehicle is controlled to execute the suspension unadjustable warning mode; the present invention starts from the perspective before the bottoming collision occurs, identifies road obstacles before the bottoming collision occurs, and determines whether the battery pack will have a bottoming collision when the vehicle is driving, and based on this, designs a set of battery pack safety protection methods in vehicle bottoming collisions to avoid bottoming collisions and reduce the impact energy and damage probability of bottoming collisions. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a flow chart of an embodiment of a method for protecting a battery pack in a vehicle bottoming collision according to the present invention;

[0039] Figure 2 It is a flow chart of another embodiment of a method for protecting a battery pack in a vehicle bottoming collision according to the present invention;

[0040] Figure 3 It is a structural schematic diagram of a master control system of the present invention;

[0041] Figure 4 It is a structural schematic diagram of a battery pack safety protection system in a vehicle bottoming collision according to the present invention. Description of the drawings:

[0043] 100. Battery pack safety protection system in automobile bottom collision; 110. Data acquisition module; 120. Status acquisition module; 130. Early warning adjustment module. DETAILED DESCRIPTION

[0044] Reference will now be made in detail to specific embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Although the present invention will be described in conjunction with specific embodiments, it will be understood that it is not intended to limit the present invention to the embodiments described. On the contrary, it is intended to cover changes, modifications and equivalents included in the spirit and scope of the present invention as defined by the appended claims. It should be noted that the method steps described herein can all be implemented by any functional block or functional arrangement, and any functional block or functional arrangement can be implemented as a physical entity or a logical entity, or a combination of the two.

[0045] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0046] Note: The example to be introduced below is only a specific example, and is not intended to limit the embodiments of the present invention to the following specific steps, values, conditions, data, sequences, etc. Those skilled in the art can apply the concept of the present invention to construct more embodiments not mentioned in this specification by reading this specification.

[0047] See also Figure 1 As shown, an embodiment of the present invention provides a method for protecting a battery pack during a vehicle bottoming collision, comprising the following steps:

[0048] S100, obtaining a height value of an obstacle, an initial clearance value between the battery pack and the ground, and a horizontal distance value between the vehicle and the obstacle;

[0049] S200, when it is detected that the initial gap value is less than or equal to the obstacle height value, obtaining a state of a vehicle suspension device;

[0050] S300, when it is detected that the state of the vehicle suspension device is an adjustable state and according to the horizontal distance value, controlling the vehicle to execute a suspension adjustment warning mode;

[0051] S400, when it is detected that the state of the vehicle suspension device is an unadjustable state and according to the horizontal distance value, the vehicle is controlled to execute a suspension unadjustable warning mode.

[0052] Specifically, in this embodiment, see Figure 1 As shown, in the current related technologies, the damage caused by bottom collision is generally reduced by adding an anti-collision beam in front of the battery pack, strengthening the bottom structure of the battery pack, or adding a buffer at the bottom of the battery pack. These safety measures are relatively passive and cannot avoid or reduce the impact of the collision before the collision occurs.

[0053] Therefore, in view of the existing technology that is mainly devoted to studying how to reduce the damage to the battery pack after a bottoming collision occurs; the present invention first obtains the obstacle height value, the initial gap value between the battery pack and the ground, and the horizontal distance value between the vehicle and the obstacle; when it is detected that the initial gap value is less than or equal to the obstacle height value, the vehicle suspension device state is obtained; when it is detected that the vehicle suspension device state is an adjustable state, and according to the horizontal distance value, the vehicle is controlled to execute the suspension adjustment warning mode; when it is detected that the vehicle suspension device state is an unadjustable state, and according to the horizontal distance value, the vehicle is controlled to execute the suspension unadjustable warning mode; the present invention starts from the perspective before the bottoming collision occurs, identifies road obstacles before the bottoming collision occurs, and determines whether the battery pack will have a bottoming collision when the vehicle is driving, and based on this, designs a set of battery pack safety protection methods in automobile bottoming collisions that avoid bottoming collisions and reduce the impact energy and damage probability of bottoming collisions.

[0054] Preferably, in another embodiment of the present application, the step of "S300, when it is detected that the state of the vehicle suspension device is an adjustable state, and according to the horizontal distance value, controlling the vehicle to execute the suspension adjustment warning mode" specifically includes the following steps:

[0055] S310, when it is detected that the vehicle suspension device is in an adjustable state, controlling the vehicle suspension device to increase its height;

[0056] S320, when the vehicle suspension device is detected to be lifted, an adjustment gap value H1 between the battery pack and the ground is obtained;

[0057] S330, when it is detected that the adjustment gap value H1 is greater than the obstacle height value D, controlling not to start the prompt alarm device and the video recording device;

[0058] S340, when it is detected that the adjustment gap value H1 is less than or equal to the obstacle height value D, and the horizontal distance value S is greater than or equal to the preset safety distance value S0 (the preset safety distance between the vehicle and the obstacle), control to start the video recording device and start the primary warning reminder of the prompt alarm device;

[0059] S350, when it is detected that the adjustment gap value H1 is less than or equal to the obstacle height value D, and the horizontal distance value S is less than the preset safety distance value S0, control to start the video recording device and start the advanced early warning reminder of the prompt alarm device.

[0060] Specifically, in this embodiment, generally, the battery pack is connected to the vehicle suspension device, and when the lifting height of the vehicle suspension device is detected, the adjustment gap value between the battery pack and the ground can be automatically obtained; if H1≤D, and when S≥S0, the primary warning reminder of the prompt alarm device is started, such as the speaker emits a weak prompt sound, and the video recording device is started at the same time, and the video is recorded and uploaded to the cloud; if H1≤D, and when S<S0, the advanced warning reminder of the prompt alarm device is started, such as the speaker emits a strong prompt sound, the instrument pops up a text prompt box, the active seat belt vibrates, etc., and the video recording device is started at the same time, and the video is recorded and uploaded to the cloud; therefore, the driver can be reminded to stop or avoid by issuing a reminder signal, such as sound, vision, vibration and other reminder methods.

[0061] Preferably, in another embodiment of the present application, after the step of “S310, when it is detected that the vehicle suspension device is in an adjustable state, controlling the vehicle suspension device to raise the height”, the following steps are specifically included:

[0062] Obtain the running time of the vehicle running to the obstacle and the adjustment time of the vehicle suspension device to complete the adjustment;

[0063] When it is detected that the running time is less than or equal to the adjustment time, the speed of increasing the lifting height of the vehicle suspension device and reducing the vehicle running speed are controlled until it is detected that the running time is greater than the adjustment time.

[0064] Specifically, in this embodiment, since it takes a certain amount of time to complete the adjustment of the vehicle suspension device and it also takes a certain amount of time for the vehicle to run to the obstacle, in order to avoid the vehicle running to the obstacle during the adjustment of the vehicle suspension device, affecting the subsequent warning operation, otherwise the vehicle has already hit the obstacle and the subsequent operation is meaningless; therefore, it is necessary to obtain the vehicle running speed and the vehicle suspension device lifting speed in real time. Therefore, when it is detected that the running time is less than or equal to the adjustment time, the speed of increasing the lifting height of the vehicle suspension device and reducing the vehicle running speed are controlled until it is detected that the running time is greater than the adjustment time. At this time, the above problem can be solved.

[0065] Preferably, in another embodiment of the present application, the step of "S400, when it is detected that the state of the vehicle suspension device is an unadjustable state, and according to the horizontal distance value, controlling the vehicle to execute the suspension unadjustable warning mode" specifically includes the following steps:

[0066] When it is detected that the horizontal distance value is greater than or equal to the preset safety distance value, control to start the video recording device and start the primary early warning reminder of the prompt alarm device;

[0067] When it is detected that the horizontal distance value is less than the preset safety distance value, the video recording device is controlled to start and the advanced early warning reminder of the prompt alarm device is started.

[0068] Specifically, in this embodiment, the primary warning reminder of the prompt alarm device is started, such as the speaker emitting a weak prompt sound, and the video recording device is started at the same time, and the video is recorded and uploaded to the cloud; the advanced warning reminder of the prompt alarm device is started, such as the speaker emitting a strong prompt sound, the instrument popping up a text prompt box, the active seat belt vibrates, etc., and the video recording device is started at the same time, and the video is recorded and uploaded to the cloud.

[0069] Preferably, in another embodiment of the present application, after the step of "controlling to start the video recording device and starting the advanced early warning reminder of the prompt alarm device", the following steps are specifically included:

[0070] Get vehicle braking information;

[0071] When the vehicle braking information is not obtained, the vehicle running speed is controlled to be reduced.

[0072] Specifically, in this embodiment, if the driver fails to brake the vehicle to avoid an obstacle for some reason, the battery pack will inevitably collide with an obstacle. At this time, operation is performed by obtaining vehicle braking information, specifically, when the vehicle braking information is not obtained, the vehicle running speed is controlled to be reduced, which can effectively reduce the damage caused by the bottoming collision of the battery pack.

[0073] Preferably, in another embodiment of the present application, before the step of "obtaining the obstacle height value, the initial gap value between the battery pack and the ground, and the horizontal distance value between the vehicle and the obstacle", the following steps are specifically included:

[0074] Get the vehicle running speed;

[0075] When the running speed of the vehicle is greater than zero, the obstacle height value, the initial gap value between the battery pack and the ground, and the horizontal distance value between the vehicle and the obstacle are obtained.

[0076] See also Figure 3 As shown, a master control system includes a data acquisition system, a battery pack safety protection system during vehicle bottom collision (vehicle control electronic equipment), and an execution system. The data acquisition system includes a camera device, a radar device, an acceleration signal acquisition device, and a brake signal acquisition device. The execution system includes a vehicle speed control device, a vehicle suspension device, a prompt alarm device, and a video recording device.

[0077] Combination Figure 3 See also Figure 2 As shown,

[0078] 1. When the vehicle starts, the data acquisition system starts up, and the obstacle height and the horizontal distance between the vehicle and the obstacle are detected by the camera and radar devices. The initial clearance between the battery pack and the ground is obtained by the minimum ground clearance and suspension height of the vehicle.

[0079] 2. When it is detected that the initial gap value H0 is less than or equal to the obstacle height value D, the state of the vehicle suspension device is obtained;

[0080] 3. When it is detected that the vehicle suspension device is in an adjustable state, control the vehicle suspension device to lift a height; when it is detected that the vehicle suspension device is in an unadjustable state, jump to step 7;

[0081] 4. The running time of the vehicle running to the obstacle can be calculated as T through the vehicle acceleration signal acquisition device, and the adjustment time of the vehicle suspension device adjustment can be calculated as t according to the suspension adjustment rate and adjustment height; when it is detected that the running time is less than or equal to the adjustment time, the speed of increasing the lifting height of the vehicle suspension device and reducing the vehicle running speed are controlled until it is detected that the running time T is greater than the adjustment time t;

[0082] 5. When the vehicle suspension device is detected to be lifted, the adjustment gap value H1 between the battery pack and the ground is obtained; when it is detected that the adjustment gap value H1 is greater than the obstacle height value D, the prompt alarm device and the video recording device are controlled not to be started;

[0083] 6. When it is detected that the adjustment gap value H1 is less than or equal to the obstacle height value D;

[0084] 7. When the horizontal distance value S is greater than or equal to the preset safety distance value S0, control to start the video recording device and start the primary warning reminder of the prompt alarm device;

[0085] 8. When the horizontal distance value S is less than the preset safety distance value S0, the video recording device and the high-level early warning device are started;

[0086] 9. Obtain vehicle braking information through a braking signal acquisition device; when the vehicle braking information is not obtained, control the vehicle running speed to decrease;

[0087] The solution of the present invention can identify obstacles before a bottoming collision occurs, and remind the driver to slow down and avoid them by actively raising the suspension, reducing the vehicle speed, and issuing a warning alarm. If the driver fails to avoid them for some reason, the reduction in vehicle speed and the raising of the suspension can also effectively reduce the damage caused by the bottoming collision of the battery pack. At the same time, the recording by the camera device can also facilitate the investigation of the cause of the accident and the resolution of the problem afterwards.

[0088] Compared with the prior art, the present invention identifies road obstacles before a bottoming collision occurs, determines through system logic whether a battery pack will bottom out when the vehicle is driving, and decides whether to initiate a safety protection execution plan.

[0089] Furthermore, the present invention actively adjusts the suspension adjustment rate and the vehicle's driving speed in combination with the height and distance of the obstacle, the vehicle speed, the ground clearance of the battery pack, and the suspension adjustment time, thereby buying time for raising the chassis.

[0090] Furthermore, reducing the vehicle speed and raising the suspension before a bottoming collision occurs can reduce the energy of the bottoming collision and simultaneously reduce the contact area between the battery pack and the obstacle, which can effectively reduce the damage to the battery pack caused by the collision and reduce the risk of fire in the vehicle.

[0091] Furthermore, the bottoming collision is recorded and uploaded to the cloud for permanent record, which is convenient for accident cause analysis and problem solving after the bottoming collision occurs.

[0092] See also Figure 4As shown, the embodiment of the present invention also provides a battery pack safety protection system 100 for a vehicle bottoming collision, comprising:

[0093] The data acquisition module 110 is used to acquire the obstacle height value, the initial gap value between the battery pack and the ground, and the horizontal distance value between the vehicle and the obstacle;

[0094] A state acquisition module 120, which is in communication with the data acquisition module 110, is used to acquire the state of the vehicle suspension device when it is detected that the initial gap value is less than or equal to the obstacle height value;

[0095] The warning adjustment module 130 is communicatively connected with the data acquisition module 110 and the state acquisition module 120, and is used to control the vehicle to execute a suspension adjustment warning mode when it is detected that the vehicle suspension device is in an adjustable state and according to the horizontal distance value; and to control the vehicle to execute a suspension non-adjustable warning mode when it is detected that the vehicle suspension device is in an unadjustable state and according to the horizontal distance value.

[0096] The warning adjustment module 130 is used to control the vehicle suspension device to lift the height when it is detected that the vehicle suspension device is in an adjustable state; after detecting the vehicle suspension device lifting height, obtain the adjustment gap value between the battery pack and the ground; when it is detected that the adjustment gap value is greater than the obstacle height value, control not to start the prompt alarm device and the video recording device; when it is detected that the adjustment gap value is less than or equal to the obstacle height value, and the horizontal distance value is greater than or equal to the preset safety distance value, control to start the video recording device and start the primary warning reminder of the prompt alarm device; when it is detected that the adjustment gap value is less than or equal to the obstacle height value, and the horizontal distance value is less than the preset safety distance value, control to start the video recording device and start the advanced warning reminder of the prompt alarm device. The warning adjustment module 130 is used to obtain the running time of the vehicle running to the obstacle and the adjustment time of the vehicle suspension device adjustment completion; when it is detected that the running time is less than or equal to the adjustment time, control to increase the speed of the vehicle suspension device lifting height and reduce the vehicle running speed until it is detected that the running time is greater than the adjustment time.

[0097] The early warning adjustment module 130 is used to obtain vehicle braking information; when the vehicle braking information is not obtained, the vehicle running speed is controlled to be reduced.

[0098] The present invention starts from the perspective before a bottoming collision occurs, identifies road obstacles before the bottoming collision occurs, and determines whether the battery pack will have a bottoming collision when the vehicle is driving. Based on this, a battery pack safety protection system for a vehicle bottoming collision is designed to avoid the occurrence of a bottoming collision and reduce the impact energy and damage probability of the bottoming collision.

[0099] Specifically, this embodiment corresponds one-to-one to the above method embodiment, and the functions of each module have been described in detail in the corresponding method embodiment, so they will not be repeated here.

[0100] Based on the same inventive concept, an embodiment of the present application further provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, all or part of the method steps of the above method are implemented.

[0101] The present invention implements all or part of the process in the above method, and can also be completed by instructing related hardware through a computer program. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by a processor, the steps of each method embodiment can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may include: any entity or device capable of carrying computer program code, recording medium, USB flash drive, mobile hard disk, disk, optical disk, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium. It should be noted that the content contained in the computer-readable medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, the computer-readable medium does not include electric carrier signals and telecommunication signals.

[0102] Based on the same inventive concept, an embodiment of the present application also provides an electronic device, including a memory and a processor, wherein the memory stores a computer program running on the processor, and when the processor executes the computer program, all or part of the method steps in the above method are implemented.

[0103] The processor may be a central processing unit (CPU), other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc. The processor is the control center of a computer device, and uses various interfaces and lines to connect various parts of the entire computer device.

[0104] The memory can be used to store computer programs and / or modules. The processor realizes various functions of the computer device by running or executing the computer programs and / or modules stored in the memory, and calling the data stored in the memory. The memory can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system and at least one application required for a function (such as a sound playback function, an image playback function, etc.); the data storage area can store data created according to the use of the mobile phone (such as audio data, video data, etc.). In addition, the memory can include a high-speed random access memory, and can also include a non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a smart memory card (SmartMedia Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0105] It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as methods, systems, servers or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) containing computer-usable program codes.

[0106] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), servers, and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as a combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0107] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0108] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0109] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A method for protecting a battery pack during a vehicle bottoming collision, characterized in that: The following steps are involved: Obtain the obstacle height value, the initial gap value between the battery pack and the ground, and the horizontal distance value between the vehicle and the obstacle; When it is detected that the initial gap value is less than or equal to the obstacle height value, obtaining a state of a vehicle suspension device; When it is detected that the state of the vehicle suspension device is in an adjustable state, and according to the horizontal distance value, the vehicle is controlled to execute a suspension adjustment warning mode; specifically comprising: When it is detected that the state of the vehicle suspension device is an adjustable state, controlling the vehicle suspension device to lift a height; When the vehicle suspension device is detected to be lifted, the adjustment gap value H1 between the battery pack and the ground is obtained; When it is detected that the adjustment gap value H1 is greater than the obstacle height value D, the prompt alarm device and the video recording device are controlled not to be started; When it is detected that the adjustment gap value H1 is less than or equal to the obstacle height value D, and the horizontal distance value S is greater than or equal to the preset safety distance value S0 between the vehicle and the obstacle, control to start the video recording device and start the primary warning reminder of the prompt alarm device; When it is detected that the adjustment gap value H1 is less than or equal to the obstacle height value D, and the horizontal distance value S is less than the preset safety distance value S0, the video recording device and the high-level early warning reminder of the prompt alarm device are controlled to be started; When it is detected that the state of the vehicle suspension device is an unadjustable state and according to the horizontal distance value, the vehicle is controlled to execute a suspension unadjustable warning mode.

2. The method for protecting the battery pack during a vehicle bottoming collision as claimed in claim 1, characterized in that: After the step of "when detecting that the vehicle suspension device is in an adjustable state, controlling the vehicle suspension device to lift the height", the following steps are specifically included: Obtain the running time of the vehicle running to the obstacle and the adjustment time of the vehicle suspension device to complete the adjustment; When it is detected that the running time is less than or equal to the adjustment time, the speed of increasing the lifting height of the vehicle suspension device and reducing the vehicle running speed are controlled until it is detected that the running time is greater than the adjustment time.

3. The method for protecting the battery pack during a vehicle bottoming collision as claimed in claim 1, characterized in that: The step of "when detecting that the state of the vehicle suspension device is an unadjustable state and according to the horizontal distance value, controlling the vehicle to execute the suspension unadjustable warning mode" specifically includes the following steps: When it is detected that the horizontal distance value is greater than or equal to the preset safety distance value, control to start the video recording device and start the primary early warning reminder of the prompt alarm device; When it is detected that the horizontal distance value is less than the preset safety distance value, the video recording device is controlled to start and the advanced early warning reminder of the prompt alarm device is started.

4. The method for protecting a battery pack during a vehicle bottoming collision according to any one of claims 1 or 3, characterized in that: After the step of "controlling and starting the video recording device and starting the advanced early warning reminder of the prompt alarm device", the following steps are specifically included: Get vehicle braking information; When the vehicle braking information is not obtained, the vehicle running speed is controlled to be reduced.

5. The method for protecting the battery pack during a vehicle bottoming collision as claimed in claim 1, characterized in that: Before the step of "obtaining the obstacle height value, the initial gap value between the battery pack and the ground, and the horizontal distance value between the vehicle and the obstacle", the following steps are specifically included: Get the vehicle running speed; When the running speed of the vehicle is greater than zero, the obstacle height value, the initial gap value between the battery pack and the ground, and the horizontal distance value between the vehicle and the obstacle are obtained.

6. A battery pack safety protection system for a vehicle underbody collision, characterized in that: include: A data acquisition module is used to obtain the obstacle height value, the initial gap value between the battery pack and the ground, and the horizontal distance value between the vehicle and the obstacle; a state acquisition module, which is in communication with the data acquisition module and is used to acquire the state of the vehicle suspension device when it is detected that the initial gap value is less than or equal to the obstacle height value; an early warning adjustment module, which is in communication with the data acquisition module and the state acquisition module, and is used to control the vehicle to execute a suspension adjustment early warning mode when it is detected that the vehicle suspension device is in an adjustable state and according to the horizontal distance value; and to control the vehicle to execute a suspension non-adjustable early warning mode when it is detected that the vehicle suspension device is in an unadjustable state and according to the horizontal distance value; The early warning adjustment module is specifically used to: when it is detected that the state of the vehicle suspension device is an adjustable state, control the vehicle suspension device to lift the height; when the vehicle suspension device is lifted, obtain the adjustment gap value between the battery pack and the ground; when it is detected that the adjustment gap value is greater than the obstacle height value, control not to start the prompt alarm device and the video recording device; when it is detected that the adjustment gap value is less than or equal to the obstacle height value, and the horizontal distance value is greater than or equal to the preset safety distance value, control to start the video recording device and start the primary early warning reminder of the prompt alarm device; When it is detected that the adjustment gap value is less than or equal to the obstacle height value, and the horizontal distance value is less than the preset safety distance value, the video recording device and the high-level early warning reminder of the prompt alarm device are controlled to be started.

7. The battery pack safety protection system for automobile bottom collision as claimed in claim 6, characterized in that: The early warning adjustment module is used to obtain the running time of the vehicle running to the obstacle and the adjustment time of the vehicle suspension device; when it is detected that the running time is less than or equal to the adjustment time, the speed of increasing the lifting height of the vehicle suspension device and reducing the vehicle running speed are controlled until it is detected that the running time is greater than the adjustment time.

8. The battery pack safety protection system for automobile bottom collision as claimed in claim 6, characterized in that: The early warning adjustment module is used to obtain vehicle braking information; when the vehicle braking information is not obtained, the vehicle running speed is controlled to be reduced.

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