Bumper and vehicle

Abstract

The application relates to a fender and a vehicle. The fender comprises a fender body and a fender controller; the fender body is provided with a magnetic fiber wire connected with the fender controller; the fender controller is used for emitting high-frequency alternating current to the magnetic fiber wire; the magnetic fiber wire is used for generating an electromagnetic field under the excitation of the high-frequency alternating current; and the fender controller is further used for acquiring a voltage signal of the magnetic fiber wire under the action of the electromagnetic field and determining collision information of the fender body according to the voltage signal. The fender provided by the application can effectively improve the accuracy of collision detection.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to a protective plate and a vehicle. Background Technology

[0002] The power batteries of new energy vehicles are usually installed at the bottom of the vehicle. During the driving process, collisions such as scraping and bottoming out are likely to occur. Traditional guard plates can only provide safety protection for the power battery as mechanical components, but cannot detect collisions in real time, which makes it easy to cause safety accidents due to damage to the power battery.

[0003] In existing technologies, most collision detection is achieved by placing sensors on the guard plate and then using the data collected by the sensors.

[0004] However, most sensors are greatly affected by environmental factors, resulting in poor accuracy in collision detection. Summary of the Invention

[0005] Therefore, it is necessary to provide a protective plate and vehicle that can improve the accuracy of collision detection to address the aforementioned technical problems.

[0006] In a first aspect, this application provides a protective plate, including a protective plate body and a protective plate controller; the protective plate body is provided with magnetic fiber filaments, which are connected to the protective plate controller.

[0007] The shield controller is used to transmit high-frequency alternating current to the magnetic fiber filament;

[0008] The magnetic fiber is used to generate an electromagnetic field under the excitation of the high-frequency alternating current;

[0009] The guard plate controller is also used to acquire the voltage signal of the magnetic fiber under the action of the electromagnetic field, and to determine the collision information of the guard plate body based on the voltage signal.

[0010] In one embodiment, the guard plate controller is specifically configured to determine the impact force based on the voltage signal and to determine the collision information based on the impact force.

[0011] In one embodiment, the guard plate controller is specifically configured to determine the impact force based on the voltage signal and the reference voltage signal.

[0012] In one embodiment, the guard plate controller is specifically used to adjust the reference voltage signal after the guard plate body is involved in a collision, so as to obtain a new reference voltage signal.

[0013] In one embodiment, the guard plate controller is specifically used to determine the target impact force range to which the collision impact force belongs from a plurality of preset impact force ranges, and to determine the target collision level corresponding to the target impact force range, and to determine the collision information based on the target collision level; wherein, different impact force ranges correspond to different collision levels.

[0014] In one embodiment, the impact force boundary value of each impact force range is determined based on at least one of the following: the diameter of the magnetic fiber, the manufacturing process of the magnetic fiber, the position of the magnetic fiber on the protective plate body, the number of braided layers of the protective plate body, and the material of the protective plate body.

[0015] In one embodiment, the guard plate controller is specifically configured to determine the collision location based on the voltage signal and to determine the collision information based on the collision location.

[0016] In one embodiment, the guard plate includes multiple guard plate areas, each guard plate area is provided with different magnetic fiber filaments, and the guard plate controller is specifically used to determine the target magnetic fiber filament based on the voltage signal, determine the target guard plate area to which the target magnetic fiber filament belongs, and determine the collision position based on the target guard plate area.

[0017] In one embodiment, the guard plate controller is specifically configured to determine the target magnetic fiber based on the voltage signal and the reference voltage signal.

[0018] In one embodiment, the protective panel body includes a braided layer, on which magnetic fiber filaments are braided in a U-shape or cross-shaped manner to divide the protective panel body into the plurality of protective panel areas.

[0019] In one embodiment, the magnetic fiber filament is disposed on the braided layer by a resin transfer molding process and is integrally formed with the braided layer.

[0020] In one embodiment, the magnetic fiber includes a core and a cover layer; the core is made of at least one of cobalt-based metal, iron-based amorphous alloy, nickel-iron alloy, neodymium-iron-boron magnetic powder composite fiber, iron-chromium-aluminum alloy, manganese-zinc ferrite, and nickel-zinc ferrite; the cover layer is made of at least one of glass, polymer coating, ceramic coating, metal plating, carbon-based material, and biodegradable material.

[0021] In one embodiment, the guard plate controller is also configured to send the collision information to the vehicle controller so that the vehicle controller displays the collision information on a display screen.

[0022] Secondly, this application also provides a vehicle including a battery and a protective plate as described in any of the embodiments of the first aspect above, the protective plate being disposed on the outside of the battery.

[0023] The aforementioned skid plate and vehicle include a skid plate body and a skid plate controller. Magnetic fiber filaments are disposed within the skid plate body and connected to the skid plate controller. The skid plate controller can first emit high-frequency alternating current to the magnetic fiber filaments; the magnetic fiber filaments generate an electromagnetic field under the excitation of the high-frequency alternating current; the skid plate controller then acquires the voltage signal of the magnetic fiber filaments under the action of the electromagnetic field and determines the collision information of the skid plate body based on the voltage signal. The skid plate provided in this application achieves collision detection through magnetic fiber filaments disposed within the skid plate body. These magnetic fiber filaments not only possess characteristics such as high temperature resistance, high pressure resistance, high sensitivity, strong tensile mechanical properties, and high survival rate of embedded skid plates, but are also less affected by environmental factors such as humidity, chemical corrosion, salt spray, and temperature, thereby effectively improving the accuracy of collision detection. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments of this application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the protective plate in one embodiment;

[0026] Figure 2 This is a schematic diagram of the protective plate body in one embodiment;

[0027] Figure 3 This is a schematic diagram of the arrangement of magnetic fiber filaments in one embodiment;

[0028] Figure 4 This is a schematic diagram of a magnetic fiber filament in one embodiment;

[0029] Figure 5 This is a schematic diagram of the protective plate in another embodiment. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0031] It should be noted that in the description of this application, the term "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0033] In this application, unless otherwise expressly specified and limited, if a description such as "inside" or "outside" the second feature appears, it means that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium.

[0034] The power batteries of new energy vehicles are usually installed at the bottom of the vehicle. During the driving process, collisions such as scraping and bottoming out are likely to occur. Traditional guard plates can only provide safety protection for the power battery as mechanical components, but cannot detect collisions in real time, which makes it easy to cause safety accidents due to damage to the power battery.

[0035] In existing technologies, most collision detection is achieved by placing sensors on the guard plate and then using the data collected by the sensors.

[0036] For example, a pressure sensor can be embedded within the protective plate to detect collisions using the data collected by the pressure sensor. Another example is embedding a fiber optic sensor within the protective plate to detect collisions using the data collected by the fiber optic sensor. Yet another example is placing a capacitive sensor within the protective plate to detect collisions using the data collected by the capacitive sensor.

[0037] However, most sensors are significantly affected by environmental factors, leading to poor accuracy in collision detection. For example, voltage sensors are easily affected by driving vibrations, resulting in false alarms. Similarly, capacitive sensors are susceptible to changes in ambient temperature and humidity, causing misjudgments. Furthermore, the harsh environment in which the skid plate is located makes it vulnerable to impacts from gravel, easily damaging the capacitor seals and leading to leakage or short circuits. Additionally, fiber optic sensors are fragile and prone to failure, easily breaking after a collision.

[0038] In view of this, this application provides a protective plate, which includes a protective plate body and a protective plate controller. Magnetic fiber filaments are disposed within the protective plate body and connected to the protective plate controller. The protective plate controller can first emit high-frequency alternating current to the magnetic fiber filaments; the magnetic fiber filaments generate an electromagnetic field under the excitation of the high-frequency alternating current; the protective plate controller then acquires the voltage signal of the magnetic fiber filaments under the action of the electromagnetic field and determines the collision information of the protective plate body based on the voltage signal. The protective plate provided by this application achieves collision detection through the magnetic fiber filaments disposed within the protective plate body. These magnetic fiber filaments not only possess characteristics such as high temperature resistance, high pressure resistance, high sensitivity, strong tensile mechanical properties, and high survival rate of embedded protective plates, but are also less affected by environmental factors such as humidity, chemical corrosion, salt spray, and temperature fluctuations, thereby effectively improving the accuracy of collision detection.

[0039] In one exemplary embodiment, such as Figure 1 As shown, a protective plate is provided, which includes a protective plate body 101 and a protective plate controller 102.

[0040] The protective plate body is provided with magnetic fiber 1011, which is connected to the protective plate controller 102.

[0041] The guard plate controller 102 is used to transmit high-frequency alternating current to the magnetic fiber 1011; the magnetic fiber 1011 is used to generate an electromagnetic field under the excitation of the high-frequency alternating current; the guard plate controller 102 is also used to acquire the voltage signal of the magnetic fiber 1011 under the action of the electromagnetic field, and determine the collision information of the guard plate body 101 based on the voltage signal.

[0042] A battery guard is a protective device installed at the bottom of a vehicle's battery. It protects the battery from external damage and extends its lifespan. For example, during driving, the bottom of the battery may encounter stones, protrusions, or other obstacles on the road. The battery guard effectively prevents these hard objects from directly impacting the battery, reducing the risk of damage from collisions. Furthermore, the battery guard also prevents rainwater, mud, and dust from entering the battery, avoiding performance and lifespan issues caused by moisture or dust accumulation.

[0043] Optionally, the shield controller 102 can be a microcontroller, a programmable logic controller, a digital signal processor, etc. The high-frequency AC power supply can be 10MHz-100MHz.

[0044] Magnetic fiber 1011 refers to a functional material that combines magnetic properties with the characteristics of fiber materials. By introducing magnetic substances into the fiber, it acquires magnetic responsiveness.

[0045] Optionally, collision information may include collision level, collision time, collision location, collision direction, etc.

[0046] In some exemplary embodiments, the shielding controller can first emit high-frequency alternating current to the magnetic fiber filament, which will generate an electromagnetic field under the excitation of the high-frequency alternating current emitted by the shielding controller.

[0047] Furthermore, when the protective plate body is impacted, the magnetic fiber filaments are stretched or bent, causing a change in the magnetic resistance of the electromagnetic field, which in turn causes a change in the output voltage signal. Therefore, the protective plate controller can obtain the voltage signal of the magnetic fiber filaments under the action of the electromagnetic field in real time, and determine the impact information of the protective plate body based on the voltage signal.

[0048] For example, the guard plate controller can input a voltage signal into a pre-trained collision detection model to obtain the collision information of the guard plate body output by the collision detection model.

[0049] For example, the guard plate controller can also determine the collision information of the guard plate body based on the voltage signal and the voltage signal-collision information relationship mapping list.

[0050] The aforementioned guard plate includes a guard plate body and a guard plate controller. Magnetic fiber filaments are disposed within the guard plate body and connected to the guard plate controller. The guard plate controller can first emit high-frequency alternating current to the magnetic fiber filaments; the magnetic fiber filaments generate an electromagnetic field under the excitation of the high-frequency alternating current; the guard plate controller then acquires the voltage signal of the magnetic fiber filaments under the action of the electromagnetic field and determines the collision information of the guard plate body based on the voltage signal. The guard plate provided in this application achieves collision detection through the magnetic fiber filaments disposed within the guard plate body. These magnetic fiber filaments not only possess characteristics such as high temperature resistance, high pressure resistance, high sensitivity, strong tensile mechanical properties, and high survival rate of embedded guard plates, but are also less affected by environmental factors such as humidity, chemical corrosion, salt spray, and temperature fluctuations, thereby effectively improving the accuracy of collision detection.

[0051] In one exemplary embodiment, such as Figure 2 As shown, the protective plate body 101 includes a braided layer 1012, and the magnetic fiber filaments 1011 are braided in a U-shape or cross-shaped manner on the braided layer 1012 to divide the protective plate body 101 into the plurality of protective plate areas.

[0052] Optionally, the woven layer can be a composite material fabric woven layer. For example... Figure 2As shown, in addition to the woven layer 1012, the protective panel body may also include a high-density cushioning foam layer 1013 and a high-strength steel plate layer 1014, etc. For example, multiple layers of composite material woven fabric, high-density cushioning foam, and high-strength steel plate can be repeatedly set in the same protective panel body, or only one layer can be set. The specific setting method and quantity can be selected by technicians according to actual needs.

[0053] For example, such as Figure 3 As shown, Figure 3 The diagram shows magnetic fiber filaments woven in a cross-shaped pattern on the braided layer of the protective plate body 101, wherein A1, A2, A3, A4, B1, B2, B3 and B4 are magnetic fiber filaments.

[0054] In one exemplary embodiment, the magnetic fiber filament is disposed on the braided layer by a resin transfer molding process and integrally formed with the braided layer.

[0055] Resin Transfer Molding (RTM) is a process that involves injecting liquid resin under pressure into a closed mold, allowing it to penetrate into pre-laid fiber-reinforced materials, and then curing it to obtain a composite material product.

[0056] In some exemplary embodiments, magnetic fiber filaments can be first woven into the braided layer in a U-shape or cross-shaped manner, and then integrated with the protective plate body through RTM process at high temperature and high pressure.

[0057] In one exemplary embodiment, such as Figure 4 As shown, the magnetic fiber 1011 includes an inner core 201 and a covering layer 202.

[0058] The material of the inner core 201 is at least one of cobalt-based metal, iron-based amorphous alloy, nickel-iron alloy, neodymium-iron-boron magnetic powder composite fiber, iron-chromium-aluminum alloy, manganese-zinc ferrite and nickel-zinc ferrite.

[0059] The material of the cover layer 202 is at least one of glass, polymer coating, ceramic coating, metal plating, carbon-based material and biodegradable material.

[0060] The polymer coatings can include polyimide, epoxy resin, polyamide, etc. Ceramic coatings can include alumina, silicon nitride, etc. Metal plating can include nickel, copper, gold, silver, etc. Carbon-based materials can include graphene coatings, carbon fiber composites, etc. Biodegradable materials can include polylactic acid, chitosan, etc. Glass can also include specialty glass alternatives, such as quartz fiber, borosilicate glass, etc.

[0061] Optionally, the diameter of the magnetic fiber is 1-100μm, the tensile strength of the magnetic fiber is 1000MPa, and the magnetic fiber can be made by melt pultrusion process. Pultrusion can produce magnetic fiber with a continuous length of up to 10km, and the manufacturing cost is low.

[0062] Because magnetic fibers have the characteristics of small diameter, high temperature resistance, and high pressure resistance, they can be embedded into the protective plate through RTM process. The embedded survival rate is high, and the structure has good integration, which is conducive to the industrial production of protective plates.

[0063] In one optional embodiment of this application, the magnetic fiber filaments can not only be disposed in the protective plate to achieve collision detection for the protective plate, but can also be disposed in any structure with a braided layer to achieve collision detection for that structure.

[0064] Furthermore, in addition to magnetic fibers, carbon nanotube reinforcing fibers, semiconductor fibers, conductive fabric electrodes, synthetic bio-filaments, and bio-based polyamide fibers can also be incorporated into the protective plate to enable collision detection.

[0065] In an optional embodiment of this application, such as Figure 5 As shown, the magnetic fiber filament 1011 is connected to the guard plate controller 102 through the plug interface 301 and the connecting wire harness 302.

[0066] In one exemplary embodiment, the guard plate controller is specifically configured to determine the impact force based on the voltage signal and to determine the impact information based on the impact force.

[0067] Optionally, the impact force refers to the instantaneous force generated by the interaction between two objects during a collision.

[0068] In some exemplary embodiments, the guard plate controller can determine the impact force based on a voltage signal.

[0069] For example, the guard plate controller can input a voltage signal into a pre-trained collision impact force detection model to obtain the collision impact force output by the collision impact force detection model.

[0070] For example, the guard plate controller can also use a voltage signal-collision impact force mapping relationship list and voltage signal to determine the collision impact force. The voltage signal-collision impact force mapping relationship list is used to indicate the mapping relationship between voltage signal and collision impact force.

[0071] Furthermore, after determining the impact force, the guard plate controller can also determine the collision information based on the impact force.

[0072] For example, the guard plate controller can input the impact force into the collision information detection model to obtain the collision information output by the collision information detection model.

[0073] For example, the guard plate controller can use the collision impact force-collision information mapping relationship list and the collision impact force to determine the collision information.

[0074] In one exemplary embodiment, the guard plate controller is specifically configured to determine the impact force based on the voltage signal and the reference voltage signal.

[0075] Optionally, the reference voltage signal refers to the voltage signal of the magnetic fibers under the action of an electromagnetic field when the protective plate body is not subjected to a collision.

[0076] Optionally, the guard plate controller can re-acquire the voltage signal under non-collision conditions when the collision ends and the guard plate is stationary, and use this voltage signal as a reference voltage signal.

[0077] In some exemplary embodiments, the guard plate controller can determine the impact force based on a voltage signal and a reference voltage signal.

[0078] For example, the guard plate controller can input voltage signals and reference voltage signals into a pre-trained collision impact force detection model to obtain the collision impact force output by the collision impact force detection model.

[0079] For example, the guard plate controller can first determine the voltage change based on the voltage signal and the reference voltage signal, and then determine the collision impact force using the voltage change and the voltage change-collision impact force mapping relationship list.

[0080] In some exemplary embodiments, the guard plate controller can adjust the reference voltage signal after the guard plate body is involved in a collision to obtain a new reference voltage signal.

[0081] Optionally, the reference voltage signal is not fixed. For example, after a collision, the protective plate body may undergo slight deformation. In this case, it is necessary to recalibrate the reference voltage signal, that is, to adjust and process the reference voltage signal to obtain a new reference voltage signal, and determine the collision information of the protective plate body based on the new reference voltage signal and the voltage signal of the magnetic fiber under the action of the electromagnetic field.

[0082] In an exemplary embodiment, the guard plate controller is specifically configured to determine the target impact force range to which the collision impact force belongs from a plurality of preset impact force ranges, determine the target collision level corresponding to the target impact force range, and determine the collision information based on the target collision level.

[0083] Different impact force ranges correspond to different collision levels.

[0084] In some exemplary embodiments, after determining the impact force, the guard plate controller can determine the target impact force range to which the impact force belongs from a plurality of preset impact force ranges.

[0085] Furthermore, after determining the target impact force range, the guard plate controller can determine the target collision level corresponding to the target impact force range and define the target collision level as collision information.

[0086] For example, the correspondence between impact force range and collision level can be shown in Table 1, where C1, C2, C3, C4, C5 and C6 are the impact force boundary values ​​of the impact force range.

[0087] Table 1

[0088]

[0089] For example, if the impact force determined by the guard plate controller is Cn, then the impact force range to which Cn belongs can be determined. If the impact force range to which Cn belongs is C3-C4, then C3-C4 can be determined as the target impact force range.

[0090] Furthermore, after determining that C3-C4 is the target impact force range, the guard plate controller can determine that the collision level D2 corresponding to C3-C4 is the target collision level, and determine the target collision level as the collision information.

[0091] In an exemplary embodiment, the impact force boundary value of each impact force range is determined based on at least one of the following: the diameter of the magnetic fiber, the manufacturing process of the magnetic fiber, the location of the magnetic fiber on the protective plate body, the number of braided layers of the protective plate body, and the material of the protective plate body.

[0092] In one exemplary embodiment, the guard plate controller is specifically configured to determine the collision location based on the voltage signal and to determine the collision information based on the collision location.

[0093] In some exemplary embodiments, the guard plate controller can determine the collision location based on the voltage signal and define the collision location as collision information.

[0094] In an exemplary embodiment, the guard plate includes multiple guard plate areas, each guard plate area being provided with different magnetic fiber filaments. The guard plate controller is specifically configured to determine the target magnetic fiber filament based on the voltage signal, determine the target guard plate area to which the target magnetic fiber filament belongs, and determine the collision position based on the target guard plate area.

[0095] Optionally, the target fiber is at least one magnetic fiber affected by the collision of the protective plate among a plurality of magnetic fibers in the protective plate body, or a part of at least one magnetic fiber affected by the collision of the protective plate.

[0096] In some exemplary embodiments, the guard plate controller can acquire the voltage signal of each magnetic fiber under the action of an electromagnetic field, and determine the target magnetic fiber based on the voltage signal of each magnetic fiber under the action of an electromagnetic field.

[0097] For example, the shielding controller can input the voltage signal of each magnetic fiber under the action of an electromagnetic field into a pre-trained target magnetic fiber detection model to obtain the target magnetic fiber output by the target magnetic fiber detection model.

[0098] Furthermore, after identifying the target magnetic fiber, the guard plate controller can determine the guard plate area to which the target magnetic fiber belongs and designate that guard plate area as the target guard plate area, which is the collision location.

[0099] Taking the example of magnetic fiber filaments being woven in a cross pattern in the braided layer of the guard plate, the guard plate controller can determine the collision point at the intersection of the target magnetic fiber filaments.

[0100] In one exemplary embodiment, the guard plate controller is specifically configured to determine the target magnetic fiber based on the voltage signal and the reference voltage signal.

[0101] In some exemplary embodiments, the guard plate controller can determine the magnetic fibers whose voltage signals change based on the voltage signals of each magnetic fiber and a reference voltage signal, and identify these magnetic fibers as target magnetic fibers.

[0102] In an optional embodiment of this application, the guard plate controller can first filter the voltage signal and then determine the collision information based on the filtered voltage signal. This filtering process can filter out noisy interference signals such as minor voltage changes caused by non-collisions.

[0103] In one exemplary embodiment, the guard plate controller is also configured to send the collision information to the vehicle controller so that the vehicle controller displays the collision information on a display screen.

[0104] Optionally, the guard plate controller can be connected to the vehicle controller via a wiring harness and connector.

[0105] In some exemplary embodiments, the skid plate controller can send collision information to the vehicle controller, which, upon receiving the collision information, can display the collision information on the vehicle's display screen.

[0106] For example, the vehicle controller can display a schematic diagram of the skid plate on the screen, dividing the skid plate into multiple grids according to the arrangement of magnetic fibers. Based on the collision location in the collision information, it determines the target grid where the collision location is located from these multiple grids, and renders the target grid according to the collision level in the collision information, with different colors rendered for different collision levels. Alternatively, the vehicle controller can also display collision information in text form on the screen.

[0107] Furthermore, if the collision level is greater than the preset collision level, the vehicle controller can also issue a voice warning and a flashing warning light.

[0108] In an optional embodiment of this application, the guard plate controller can also obtain the collision time and the geographical location of the collision, and store the collision location, collision level, collision time and the geographical location of the collision. Users can query historical collision information through the display screen.

[0109] For example, historical collision information stored by the skid plate controller can also be used as evidence in a claims process. This historical collision information can also be used to adjust the road condition information of the navigation system. Furthermore, it can be used as training data to optimize the models and mapping relationship lists mentioned in the above embodiments.

[0110] Furthermore, the skid plate controller can also send the collision location, collision level, collision time, and geographical location to a cloud server, enabling the cloud server to monitor the vehicle's battery safety status.

[0111] In an optional embodiment of this application, after the skid plate controller sends the collision information to the vehicle controller, the vehicle controller can perform safety protection actions based on the collision information. For example, in the case of a high collision level, the vehicle controller can cut off the power to the battery.

[0112] The protective plate provided in this application can not only monitor battery collisions, but also determine the specific collision location and collision level, thereby improving the usability of collision detection data.

[0113] In one exemplary embodiment, this application also provides a vehicle including a battery and a protective plate. The protective plate is disposed on the exterior of the battery.

[0114] In an exemplary embodiment, the guard plate includes a guard plate body and a guard plate controller; the guard plate body is provided with magnetic fiber filaments, which are connected to the guard plate controller; the guard plate controller is used to emit high-frequency alternating current to the magnetic fiber filaments; the magnetic fiber filaments are used to generate an electromagnetic field under the excitation of the high-frequency alternating current; the guard plate controller is also used to acquire the voltage signal of the magnetic fiber filaments under the action of the electromagnetic field, and determine the collision information of the guard plate body based on the voltage signal.

[0115] In one exemplary embodiment, the guard plate controller is specifically configured to determine the impact force based on the voltage signal and to determine the impact information based on the impact force.

[0116] In one exemplary embodiment, the guard plate controller is specifically configured to determine the impact force based on the voltage signal and the reference voltage signal.

[0117] In one exemplary embodiment, the guard plate controller is specifically configured to adjust the reference voltage signal after the guard plate body is involved in a collision, so as to obtain a new reference voltage signal.

[0118] In an exemplary embodiment, the guard plate controller is specifically used to determine the target impact force range to which the collision impact force belongs from a plurality of preset impact force ranges, and to determine the target collision level corresponding to the target impact force range, and to determine the collision information based on the target collision level; wherein, different impact force ranges correspond to different collision levels.

[0119] In an exemplary embodiment, the impact force boundary value of each impact force range is determined based on at least one of the following: the diameter of the magnetic fiber, the manufacturing process of the magnetic fiber, the location of the magnetic fiber on the protective plate body, the number of braided layers of the protective plate body, and the material of the protective plate body.

[0120] In one exemplary embodiment, the guard plate controller is specifically configured to determine the collision location based on the voltage signal and to determine the collision information based on the collision location.

[0121] In an exemplary embodiment, the guard plate includes multiple guard plate areas, each guard plate area being provided with different magnetic fiber filaments. The guard plate controller is specifically configured to determine the target magnetic fiber filament based on the voltage signal, determine the target guard plate area to which the target magnetic fiber filament belongs, and determine the collision position based on the target guard plate area.

[0122] In one exemplary embodiment, the guard plate controller is specifically configured to determine the target magnetic fiber based on the voltage signal and the reference voltage signal.

[0123] In one exemplary embodiment, the protective panel body includes a braided layer, on which magnetic fiber filaments are arranged in a U-shape or cross-shaped braid to divide the protective panel body into the plurality of protective panel areas.

[0124] In one exemplary embodiment, the magnetic fiber filament is disposed on the braided layer by a resin transfer molding process and integrally formed with the braided layer.

[0125] In an exemplary embodiment, the magnetic fiber includes a core and a cover layer; the core is made of at least one of cobalt-based metal, iron-based amorphous alloy, nickel-iron alloy, neodymium-iron-boron magnetic powder composite fiber, iron-chromium-aluminum alloy, manganese-zinc ferrite, and nickel-zinc ferrite; the cover layer is made of at least one of glass, polymer coating, ceramic coating, metal plating, carbon-based material, and biodegradable material.

[0126] In one exemplary embodiment, the guard plate controller is also configured to send the collision information to the vehicle controller so that the vehicle controller displays the collision information on a display screen.

[0127] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0128] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A protective plate, characterized in that, The protective plate includes a protective plate body and a protective plate controller; magnetic fiber filaments are provided in the protective plate body and are connected to the protective plate controller; the protective plate includes multiple protective plate areas, and different magnetic fiber filaments are provided in each protective plate area. The protective plate controller is used to emit high-frequency alternating current to the magnetic fiber filament; The magnetic fiber is used to generate an electromagnetic field under the excitation of the high-frequency alternating current. The guard plate controller is further configured to acquire the voltage signal of the magnetic fiber under the action of the electromagnetic field, determine the target magnetic fiber based on the voltage signal, determine the target guard plate area to which the target magnetic fiber belongs, determine the collision position based on the target guard plate area, and determine the collision information of the guard plate body based on the collision position.

2. The protective plate according to claim 1, characterized in that, The guard plate controller is specifically used to determine the impact force based on the voltage signal, and to determine the collision information based on the impact force.

3. The protective plate according to claim 2, characterized in that, The guard plate controller is specifically used to determine the impact force based on the voltage signal and the reference voltage signal.

4. The protective plate according to claim 3, characterized in that, The guard plate controller is specifically used to adjust the reference voltage signal after the guard plate body is involved in a collision, so as to obtain a new reference voltage signal.

5. The protective plate according to claim 2, characterized in that, The guard plate controller is specifically used to determine the target impact force range to which the collision impact force belongs from multiple preset impact force ranges, and to determine the target collision level corresponding to the target impact force range, and to determine the collision information based on the target collision level; wherein, different impact force ranges correspond to different collision levels.

6. The protective plate according to claim 5, characterized in that, The impact force boundary values ​​for each of the aforementioned impact force ranges are determined based on at least one of the following: The diameter of the magnetic fiber, the manufacturing process of the magnetic fiber, the position of the magnetic fiber on the protective plate body, the number of weave layers of the protective plate body, and the material of the protective plate body.

7. The protective plate according to claim 1, characterized in that, The guard plate controller is specifically used to determine the target magnetic fiber based on the voltage signal and the reference voltage signal.

8. The protective plate according to claim 1, characterized in that, The protective plate body includes a braided layer, and the magnetic fiber filaments are braided in a U-shape or cross-shaped manner on the braided layer to divide the protective plate body into the plurality of protective plate areas.

9. The protective plate according to claim 8, characterized in that, The magnetic fiber filaments are applied to the braided layer using a resin transfer molding process and are integrally formed with the braided layer.

10. The protective plate according to claim 1, characterized in that, The magnetic fiber filament includes an inner core and a covering layer; The core material is at least one of cobalt-based metal, iron-based amorphous alloy, nickel-iron alloy, neodymium iron boron magnetic powder composite fiber, iron-chromium-aluminum alloy, manganese-zinc ferrite and nickel-zinc ferrite. The material of the coating layer is at least one of glass, polymer coating, ceramic coating, metal plating, carbon-based material, and biodegradable material.

11. The protective plate according to any one of claims 1 to 10, characterized in that, The guard plate controller is also used to send the collision information to the vehicle controller so that the vehicle controller displays the collision information on the display screen.

12. A vehicle, characterized in that, The vehicle includes a battery and a protective plate as described in any one of claims 1 to 11, the protective plate being disposed on the exterior of the battery.

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