Lower protection plate for strengthening protection of battery pack

Abstract

The utility model relates to the technical field of vehicle battery pack protection, and discloses a lower protection plate for strengthening protection of a battery pack. Comprising a protection plate body, a steel beam, side protection plates, protection plates and a first positioning plate, the protection plate body comprises a first lower protection plate, a second lower protection plate and a third lower protection plate, the protection plate body is used for preventing road surface stone and silt foreign matter from impacting a battery pack, the steel beam is fixedly installed at the top of the second lower protection plate, and one end of the second lower protection plate is fixedly connected with the first lower protection plate; the other end of the second lower protection plate is fixedly connected with the third lower protection plate, the side protection plates are fixedly connected with the first lower protection plate, the second lower protection plate and the third lower protection plate, the side protection plates are symmetrical about the center of the protection plate body, the side protection plates are used for dispersing external lateral impact force, and one end of the first positioning plate is fixedly connected with the third lower protection plate. The other end of the first positioning plate is fixedly connected with a protection plate which is used for deflecting external impact force and dispersing impact energy. The utility model has the characteristic of good protection.

Description

Technical Field

[0001] This utility model relates to the field of vehicle battery pack protection technology, and more specifically, to a lower protective plate for enhanced protection of a battery pack. Background Technology

[0002] In recent years, with the development of new energy vehicles, more stringent requirements have been placed on the protection of vehicle battery packs. Battery packs are susceptible to damage from road debris and flying stones during vehicle operation, and may even be subjected to high-intensity impacts and compression. These external impacts pose a serious threat to the safety of the battery pack, especially under bumpy or complex road conditions, where the battery pack is more easily affected by impacts and scratches, leading to damage and, in severe cases, even fire hazards. Therefore, the protection of battery packs is of paramount importance.

[0003] Currently, many new energy vehicles are equipped with underbody protection plates to protect the battery pack. However, traditional underbody protection plates have revealed problems such as insufficient structural strength, limited protective effect, and poor durability. They often fail to maintain a stable protective effect under high-intensity impacts or long-term use. Under stress, the underbody protection plates are prone to deformation or damage, especially in the event of a collision, where they cannot effectively disperse the impact force, leading to damage to the battery pack.

[0004] Therefore, it is necessary to design a reinforced lower protective plate for the battery pack to address the problems existing in the current technology. Utility Model Content

[0005] In view of this, the present invention proposes a reinforced lower protective plate for the battery pack, which aims to solve the problem that the existing lower protective plate is easily deformed or damaged under stress, resulting in damage to the battery pack.

[0006] This utility model proposes a lower protective plate for enhanced protection of a battery pack, comprising: a protective plate body, a steel beam, a side protective plate, a protective plate, and a first positioning plate;

[0007] The protective plate body includes: a first lower protective plate, a second lower protective plate and a third lower protective plate. The protective plate body is used to prevent road stones and mud and foreign objects from impacting the battery pack.

[0008] The steel beam is fixedly installed on the top of the second lower guard plate, one end of the second lower guard plate is fixedly connected to the first lower guard plate, and the other end of the second lower guard plate is fixedly connected to the third lower guard plate.

[0009] The side guards are fixedly connected to the first lower guard, the second lower guard, and the third lower guard respectively. The side guards are symmetrical about the center of the guard body and are used to disperse external lateral impact forces.

[0010] One end of the first positioning plate is fixedly connected to the third lower guard plate, and the other end of the first positioning plate is fixedly connected to the protective plate. The protective plate is used to deflect external impact force and disperse impact energy.

[0011] Furthermore, the lower protective plate of the enhanced battery pack includes:

[0012] The first positioning plate is provided with a plurality of first positioning slots;

[0013] Several of the first positioning slots are axially symmetrical about the center of the first positioning plate;

[0014] The first lower guard plate is fixedly connected to the second positioning plate, and the second positioning plate is provided with a plurality of second positioning grooves;

[0015] Several of the second positioning slots are axially symmetrical about the center of the second positioning plate.

[0016] Furthermore, the lower protective plate of the enhanced battery pack includes:

[0017] The third lower guard plate is fixedly connected to the limiting plate;

[0018] The limiting plate is axially symmetrical about the center of the third lower guard plate.

[0019] Furthermore, the lower protective plate of the enhanced battery pack includes:

[0020] The side guard plate is provided with a plurality of first limiting holes, the first limiting holes penetrating the side guard plate;

[0021] The first lower guard plate is provided with a plurality of second limiting holes, and the plurality of second limiting holes penetrate the first lower guard plate;

[0022] The third lower guard plate is provided with a plurality of third limiting holes, and the plurality of third limiting holes penetrate the third lower guard plate;

[0023] The limiting plate is provided with a fourth limiting hole, which penetrates the limiting plate.

[0024] Furthermore, the lower protective plate of the enhanced battery pack includes:

[0025] The first lower guard plate is provided with a third protrusion, a fourth protrusion, a seventh protrusion, and an eighth protrusion;

[0026] The third lower guard plate is provided with a ninth protrusion, a tenth protrusion, an eleventh protrusion and a twelfth protrusion;

[0027] The first lower guard plate and the third lower guard plate are provided with a first protrusion, a second protrusion, a fifth protrusion and a sixth protrusion.

[0028] Furthermore, the lower protective plate of the enhanced battery pack includes:

[0029] The first positioning plate is provided with a plurality of first positioning holes, the plurality of first positioning holes penetrate the first positioning plate, and the plurality of first positioning holes are axially symmetrical about the center of the first positioning plate;

[0030] The second positioning plate is provided with a second positioning hole, which penetrates the second positioning plate;

[0031] The second positioning plate is provided with a plurality of third positioning holes, the plurality of third positioning holes penetrate the second positioning plate, and the plurality of third positioning holes are axially symmetrical about the center of the second positioning plate;

[0032] The second positioning plate is provided with a fourth positioning hole, which penetrates through the second positioning plate.

[0033] Furthermore, the steel beam in the lower protective plate of the reinforced battery pack includes:

[0034] Beams, grooves, and square holes;

[0035] The beam is fixedly connected to the second lower guard plate, and the groove is formed in the beam.

[0036] The beam has several square holes, and the square holes penetrate the beam.

[0037] Furthermore, the steel beam also includes: a second through hole;

[0038] The groove is provided with a plurality of second through holes;

[0039] The second lower guard plate is provided with several first through holes;

[0040] The positions of the first through holes and the second through holes correspond one-to-one.

[0041] Furthermore, the lower protective plate of the enhanced battery pack includes:

[0042] Protective blocks are provided on the first lower guard plate and the third lower guard plate;

[0043] The first lower guard plate is provided with an installation arrow, which is used to indicate the installation direction.

[0044] Compared to existing technologies, the first, second, and third lower guard plates protect the battery pack from impacts by road debris such as stones. The multi-layered lower guard plate structure increases the protection range for the battery pack, effectively isolating it from the road surface and preventing direct impacts from foreign objects. This enhances the strength and stability of the guard plate itself, maintaining excellent protection even under complex road conditions and reducing the risk of damage to the battery pack caused by bumps. The steel beams improve structural strength and stability, increasing compressive and tensile strength. Upon impact, they effectively disperse stress, preventing the guard plate from deforming or breaking due to excessive pressure. Simultaneously, the high strength of the steel beams ensures the stability of the guard plate during long-term use, extending its service life. The side guard plates provide lateral protection, effectively dispersing external impact forces when the vehicle is subjected to lateral impacts, thereby reducing the likelihood of side impacts on the battery pack and improving its side-impact performance, thus enhancing all-around protection for the battery pack. The first positioning plate and the protective plate further enhance the protective effect. The first positioning plate supports the protective plate, ensuring that the protective plate can be installed stably. The protective plate is used to deflect and disperse external impact forces, avoiding the impact of concentrated impacts on the battery pack and reducing the risk of damage to the battery pack. Attached Figure Description

[0045] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0046] Figure 1 A schematic diagram of the lower protective plate structure of a reinforced battery pack provided for an embodiment of this utility model;

[0047] Figure 2 A schematic diagram of the back of the lower protective plate of a reinforced battery pack provided in an embodiment of this utility model;

[0048] Figure 3 This utility model Figure 1 A magnified structural diagram of part A in the middle;

[0049] Figure 4 This utility model Figure 1 A magnified structural diagram of section B in the middle;

[0050] Figure 5 This utility model Figure 1 A magnified structural diagram of section C in the middle;

[0051] Figure 6 This utility model Figure 2A magnified structural diagram of part D in the middle;

[0052] Figure 7 This utility model Figure 2 A magnified structural diagram of section E in the middle;

[0053] Figure 8 This is a schematic diagram of the steel beam structure of this utility model;

[0054] Figure 9 This is a top view of the steel beam of this utility model.

[0055] In the diagram: 1. Guard plate body; 2. Steel beam; 3. Side guard plate; 4. First positioning plate; 5. Second positioning plate; 6. Limiting plate; 7. First limiting hole; 8. Second limiting hole; 9. Third limiting hole; 10. Fourth limiting hole; 11. Guard plate; 12. Installation arrow; 13. Guard block; 14. First through hole; 15. Second through hole; 16. First positioning groove; 17. Second positioning groove; 100. First lower guard plate; 101. Second lower guard plate; 102. Third lower guard plate; 200. First protrusion; 201, Second protrusion; 202, Third protrusion; 203, Fourth protrusion; 204, Fifth protrusion; 205, Sixth protrusion; 206, Seventh protrusion; 207, Eighth protrusion; 208, Ninth protrusion; 209, Tenth protrusion; 210, Eleventh protrusion; 211, Twelfth protrusion; 300, First positioning hole; 301, Second positioning hole; 302, Third positioning hole; 303, Fourth positioning hole; 400, Beam body; 401, Groove; 402, Square hole. Detailed Implementation

[0056] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0057] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "left", "right", "vertical", "horizontal", "front", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0058] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0059] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0060] See Figure 1-2 As shown, this embodiment provides a lower guard plate for enhanced protection of a battery pack, including: a guard plate body 1, a steel beam 2, side guard plates 3, a protective plate 11, and a first positioning plate 4. The guard plate body 1 includes: a first lower guard plate 100, a second lower guard plate 101, and a third lower guard plate 102. The guard plate body 1 is used to prevent road stones and mud and sand from impacting the battery pack. The steel beam 2 is fixedly installed on the top of the second lower guard plate 101. One end of the second lower guard plate 101 is fixedly connected to the first lower guard plate 100, and the other end of the second lower guard plate 101 is fixedly connected to the third lower guard plate 102. The side guard plates 3 are fixedly connected to the first lower guard plate 100, the second lower guard plate 101, and the third lower guard plate 102, respectively. The side guard plates 3 are symmetrical about the center of the guard plate body 1. The side guard plates 3 are used to disperse external lateral impact forces. One end of the first positioning plate 4 is fixedly connected to the third lower guard plate 102, and the other end of the first positioning plate 4 is fixedly connected to the protective plate 11. The protective plate 11 is used to deflect external impact forces and disperse impact energy.

[0061] Specifically, the lower guard plate body 1 is the core part of the lower guard plate. It prevents direct impact from road debris such as stones and mud onto the battery pack, ensuring its safety during operation. The first lower guard plate 100 is the front of the lower guard plate body 1, absorbing frontal impacts from road debris. The second lower guard plate 101 connects the first lower guard plate 100 and the third lower guard plate 102, providing good support and connection, and absorbing a certain degree of force. The third lower guard plate 102 is the rear of the lower guard plate body 1, further enhancing protection for the battery pack. The lower guard plate body 1 is made of high-strength, wear-resistant alloy material. This alloy material not only possesses excellent mechanical properties but also helps reduce the overall weight of the lower guard plate, preventing excessive weight from increasing the battery pack's power consumption. The first lower guard plate 100, second lower guard plate 101, and third lower guard plate 102 are streamlined, reducing air resistance and effectively dispersing impact forces. Steel beam 2 enhances the rigidity and load-bearing capacity of the first lower guard plate 100, the second lower guard plate 101, and the third lower guard plate 102. Steel beam 2 is fixedly connected to the second lower guard plate 101, preventing concentrated stress from impacts and ensuring that the first lower guard plate 100, the second lower guard plate 101, and the third lower guard plate 102 are not easily deformed under external forces, thus improving overall stability. Steel beam 2 employs an anti-corrosion process to improve its durability, reducing the risk of rusting in rainy environments and ensuring long-term reliability. Side guard plates 3 are symmetrically arranged on the left and right sides of the guard plate body 1, evenly dispersing lateral impact forces from the outside, thereby further protecting the battery pack. Side guard plates 3 are fixedly connected to the first lower guard plate 100, the second lower guard plate 101, and the third lower guard plate 102, ensuring that the side guard plates 3 will not shift upon impact. One end of the first positioning plate 4 is fixedly connected to the third lower guard plate 102, and the other end is fixedly connected to the protective plate 11, providing stable support for the protective plate 11.

[0062] Understandably, the first lower guard plate 100, the second lower guard plate 101, and the third lower guard plate 102 reduce the risk of battery pack damage. In the event of a vehicle collision or encountering complex road conditions, the first lower guard plate 100, the second lower guard plate 101, and the third lower guard plate 102 can provide reliable protection for the battery pack.

[0063] See Figure 3 As shown, in some examples of this application, the lower protective plate for strengthening the protection of the battery pack includes:

[0064] The first positioning plate 4 is provided with a plurality of first positioning grooves 16, which are axially symmetrical about the center of the first positioning plate 4. The first lower guard plate 100 is fixedly connected to the second positioning plate 5, which is provided with a plurality of second positioning grooves 17, which are axially symmetrical about the center of the second positioning plate 5.

[0065] Specifically, the first positioning grooves 16 are symmetrically distributed around the center of the first positioning plate 4, and preferably there are 14 first positioning grooves 16. The first positioning grooves 16 help to evenly distribute the load of the first positioning plate 4 under stress, improving the protection of the battery pack. The first positioning grooves 16 reduce local stress concentration by evenly distributing the impact force at the bottom of the first positioning plate 4. The first positioning grooves 16 enable the first positioning plate 4 to be more precisely aligned when connected with other components, ensuring the connection with other components. The first positioning grooves 16 are provided with quick-release strip-shaped mechanisms, which facilitate quick opening of the first positioning grooves 16 and flexibly adapt to the connection of different components. The second positioning grooves 17 are symmetrically distributed around the center of the second positioning plate 5, and preferably there are 14 second positioning grooves 17. The first lower guard plate 100 is fixedly connected to the second positioning plate 5. When the first lower guard plate 100 is subjected to external impact, the impact force will be transmitted to the second positioning plate 5. The second positioning plate 5 disperses the impact force to the second positioning grooves 17, reducing the damage of concentrated stress to the battery pack and extending the service life of the battery pack.

[0066] It is understandable that the first positioning plate 4 and the second positioning plate 5, together with the first positioning groove 16 and the second positioning groove 17, enhance the structural stability of the protective plate body 1. The first positioning groove 16 and the second positioning groove 17 improve the connection accuracy of the protective plate body 1. During maintenance or replacement, the first positioning groove 16 and the second positioning groove 17 provide necessary guidance, reduce the complexity of operation, and thus effectively protect the battery pack.

[0067] See Figure 4 As shown, in some examples of this application, the lower protective plate for strengthening the protection of the battery pack includes:

[0068] The third lower guard plate 102 is fixedly connected to the limiting plate 6, and the limiting plate 6 is axially symmetrical about the center of the third lower guard plate 102.

[0069] Understandably, the limiting plate 6 helps to evenly distribute the load when the third lower guard plate 102 is under stress, preventing external impacts from directly acting on the third lower guard plate 102. Its axially symmetrical layout ensures that impact forces from any direction are effectively dispersed and absorbed, thereby improving the impact resistance of the third lower guard plate 102. By being fixedly connected to the third lower guard plate 102, the limiting plate 6 provides additional support while protecting the battery pack, preventing displacement of the third lower guard plate 102 during movement or when encountering external forces. This improves the safety of the battery pack and also ensures the stability and durability of the third lower guard plate 102.

[0070] In some examples of this application, the lower guard plate for strengthening the protection of the battery pack includes: a side guard plate 3 having a plurality of first limiting holes 7, the first limiting holes 7 penetrating the side guard plate 3; a first lower guard plate 100 having a plurality of second limiting holes 8, the plurality of second limiting holes 8 penetrating the first lower guard plate 100; a third lower guard plate 102 having a plurality of third limiting holes 9, the plurality of third limiting holes 9 penetrating the third lower guard plate 102; and a limiting plate 6 having a fourth limiting hole 10, the fourth limiting hole 10 penetrating the limiting plate 6.

[0071] It is understood that the first limiting hole 7 is preferably 12, the second limiting hole 8 is preferably 3, and the third limiting hole 9 is preferably 3. The first limiting hole 7, the second limiting hole 8, the third limiting hole 9, and the fourth limiting hole 10 provide interfaces for connection with other components, allowing the side guard plate 3, the first lower guard plate 100, the third lower guard plate 102, and the limiting plate 6 to be stably connected to other components, improving the protection capability of the battery pack and preventing external impact damage to the battery pack. The first limiting hole 7, the second limiting hole 8, the third limiting hole 9, and the fourth limiting hole 10 simplify the assembly and disassembly process of the side guard plate 3, the first lower guard plate 100, the third lower guard plate 102, and the limiting plate 6, reducing assembly time and improving operational convenience. When protecting special types of battery packs, the first limiting hole 7, the second limiting hole 8, the third limiting hole 9, and the fourth limiting hole 10 provide a certain amount of adjustment space, allowing for fine-tuning of the relative position of the battery pack during assembly. This ensures the connection between the side guard plate 3, the first lower guard plate 100, the third lower guard plate 102, and the limiting plate 6 and the battery pack or other components, preventing damage caused by mismatched battery packs. This, in turn, improves the impact resistance of the lower guard plate, thereby strengthening the protection of the battery pack.

[0072] In some examples of this application, the lower guard plate for enhanced protection of the battery pack includes: a first lower guard plate 100 having a third protrusion 202, a fourth protrusion 203, a seventh protrusion 206 and an eighth protrusion 207; a third lower guard plate 102 having a ninth protrusion 208, a tenth protrusion 209, an eleventh protrusion 210 and a twelfth protrusion 211; and the first lower guard plate 100 and the third lower guard plate 102 having a first protrusion 200, a second protrusion 201, a fifth protrusion 204 and a sixth protrusion 205.

[0073] Specifically, the first protrusion 200 is located at the edge region of the first lower guard plate 100 and the third lower guard plate 102, providing impact protection for the first lower guard plate 100 and the third lower guard plate 102. It effectively absorbs external impact forces, reduces direct pressure on the battery pack, and prevents external objects from directly impacting the battery pack body. The second protrusion 201 is also located at the edge region of the first lower guard plate 100 and the third lower guard plate 102. The second protrusion 201 is adjacent to the first protrusion 200, strengthening the impact resistance of the portion adjacent to the first protrusion 200, improving the deformation resistance of the edge region, enhancing structural stability, and preventing the first lower guard plate 100 and the third lower guard plate 102 from deforming under external impact. The third protrusion 202 is only located on the first lower guard plate 100, near the center. The third protrusion 202 provides additional support to the central region of the first lower guard plate 100, preventing the central portion of the first lower guard plate 100 from denting or deforming under significant pressure. The fourth protrusion 203 is located adjacent to the third protrusion 202 on the first lower guard plate 100. The fourth protrusion 203 disperses stress in the central region of the first lower guard plate 100, preventing indentation in the central region, increasing the first lower guard plate 100's protection against sharp objects, and preventing debris or hard objects from puncturing the first lower guard plate 100. The fifth protrusion 204 is located on both the first lower guard plate 100 and the third lower guard plate 102, providing additional structural support to keep them relatively stable under impact, reducing the risk of breakage. The sixth protrusion 205 prevents the first lower guard plate 100 and the third lower guard plate 102 from loosening under high-intensity impacts, ensuring the battery pack remains stable even when subjected to impacts at different angles. The seventh protrusion 206 provides impact-resistant support to the edge of the first lower guard plate 100, reducing the impact of external lateral impacts on the battery pack and providing an anti-slip effect, preventing the first lower guard plate 100 from shifting due to vibration or impact. The eighth protrusion 207 enhances the impact resistance of the edge of the first lower guard plate 100, dispersing impact forces from different directions and protecting the edge area of ​​the battery pack from direct damage. The ninth protrusion 208, located near the center of the side of the third lower guard plate 102, enhances the impact resistance of the central area of ​​the third lower guard plate 102, providing additional support when subjected to lateral impacts and ensuring that this area is not easily deformed under external forces, thus protecting the battery pack. The tenth protrusion 209, positioned at the edge of the third lower guard plate 102, provides compression and impact resistance support to the edge area, dispersing impact forces on the third lower guard plate 102 when struck by external debris or hard objects, preventing damage to the battery pack. The eleventh protrusion 210 provides additional impact and tear resistance protection, enhancing the strength and durability of the third lower guard plate 102. The twelfth protrusion 211 provides additional support for the central area. It effectively disperses concentrated pressure from below, reducing direct impact on the central area and enabling the battery pack to remain stable even under greater pressure.

[0074] Understandably, the 12 bumps provide comprehensive shock and pressure protection for the battery pack, enhancing the overall structural strength and durability of the first lower guard plate 100 and the third lower guard plate 102, and effectively protecting the battery pack from external impacts in different directions.

[0075] See Figure 5-7 As shown, in some embodiments of this application, the lower protective plate of the reinforced battery pack includes: a first positioning plate 4 having a plurality of first positioning holes 300, the plurality of first positioning holes 300 penetrating the first positioning plate 4, the plurality of first positioning holes 300 being axially symmetrical about the center of the first positioning plate 4; a second positioning plate 5 having a second positioning hole 301, the second positioning hole 301 penetrating the second positioning plate 5; a second positioning plate 5 having a plurality of third positioning holes 302, the plurality of third positioning holes 302 penetrating the second positioning plate 5, the plurality of third positioning holes 302 being axially symmetrical about the center of the second positioning plate 5; and a second positioning plate 5 having a fourth positioning hole 303, the fourth positioning hole 303 penetrating the second positioning plate 5.

[0076] It is understood that there are preferably four first positioning holes 300 and two third positioning holes 302. The four first positioning holes 300 facilitate stable installation and precise positioning of the first positioning plate 4. The second positioning plate 5 has multiple positioning holes, including one second positioning hole 301, two third positioning holes 302, and one fourth positioning hole 303. The second positioning hole 301 is a flattened oval hole, and the third positioning hole 302 has a larger radius than the fourth positioning hole 303. The second positioning hole 301 provides greater adjustment space, facilitating installation with components of different sizes, thereby improving the compatibility and operational flexibility of the second positioning plate 5. Compared to a circular hole, the flattened oval hole allows for adjustment of the connection position within a certain range, adapting to different installation requirements. The third positioning hole 302 provides greater installation space than the fourth positioning hole 303, facilitating the fixation of the second positioning plate 5. The fourth positioning hole 303 provides a precise installation position, improving the stability of the second positioning plate 5 installation. Precise installation of the first positioning plate 4 and the second positioning plate 5 enhances the protection of the battery pack.

[0077] See Figure 8 As shown, in some examples of this application, the steel beam 2 includes: a beam body 400, a groove 401 and a square hole 402. The beam body 400 is fixedly connected to the second lower guard plate 101. The beam body 400 has a groove 401 and a plurality of square holes 402, which penetrate the beam body 400.

[0078] Understandably, the steel beam 2 is the load-bearing component of the second lower guard plate 101. The beam 400 is fixedly connected to the second lower guard plate 101, enhancing its shock absorption and impact resistance, allowing it to withstand impacts from different directions without damage. The groove 401 reduces the overall weight of the beam 400 and provides a channel for the battery pack's cables and other wiring, facilitating the arrangement of electrical components. The groove 401 also enhances the structural strength of the beam 400, ensuring effective dispersion of external forces during impacts and reducing direct impact on the battery pack. Preferably, there are two square holes 402. These holes reduce material usage and prevent moisture accumulation. When water or moisture enters the beam 400 structure, the square holes 402 provide drainage and ventilation channels, reducing the risk of corrosion and extending the service life of the steel beam 2. The combination of beam 400, groove 401 and square hole 402 achieves a balance between lightweight and durability, improving the protection of the battery pack.

[0079] See Figure 9 As shown, in some examples of this application, the steel beam 2 further includes: a second through hole 15, a groove 401 with a plurality of second through holes 15, and a second lower guard plate 101 with a plurality of first through holes 14, the positions of the plurality of first through holes 14 and the plurality of second through holes 15 corresponding one to one.

[0080] It is understood that there are preferably 7 first through holes 14 and 7 second through holes 15. The positions of the 7 first through holes 14 and the 7 second through holes 15 correspond one-to-one. The first through holes 14 and the second through holes 15 help to connect the steel beam 2 and the second lower guard plate 101 more stably, ensuring that the second lower guard plate 101 maintains a high-strength fixing effect and provides more reliable protection for the battery pack.

[0081] In some examples of this application, the lower guard plate for strengthening the protection of the battery pack includes: a first lower guard plate 100 and a third lower guard plate 102 with a protective block 13 provided, and the first lower guard plate 100 with an installation arrow 12 for indicating the installation direction.

[0082] Understandably, the protective block 13 enhances the battery pack's protection against external forces. The protective block 13 disperses the impact force in the central area of ​​the first lower guard plate 100 and the third lower guard plate 102, reducing the direct impact on the battery pack and thus improving its protection. The first lower guard plate 100 is equipped with an installation arrow 12, which indicates the installation direction, facilitating quick determination of the correct orientation during installation and ensuring the correct installation of the guard plate body 1, thereby improving the installation efficiency and accuracy of the guard plate body 1.

[0083] In summary, the first, second, and third lower guard plates protect the battery pack from impacts by road debris such as stones. The multi-layered lower guard plate structure increases the protection range for the battery pack, effectively isolating it from the road surface and preventing direct impacts from foreign objects. This enhances the strength and stability of the guard plate itself, maintaining excellent protection even under complex road conditions and reducing the risk of damage to the battery pack due to bumps. The steel beams further improve structural strength and stability. Increased compressive and tensile strength effectively disperses stress upon impact, preventing excessive pressure on the guard plate and thus avoiding deformation or breakage. Simultaneously, the high strength of the steel beams ensures the stability of the guard plate over long-term use, extending its service life. The side guard plates provide lateral protection, effectively dispersing external impact forces when the vehicle is subjected to lateral impacts, thereby reducing the likelihood of side impacts on the battery pack and improving its side-impact performance, enhancing all-around protection for the battery pack. The first positioning plate and the protective plate further enhance the protective effect. The first positioning plate supports the protective plate, ensuring that the protective plate can be installed stably. The protective plate is used to deflect and disperse external impact forces, avoiding the impact of concentrated impacts on the battery pack and reducing the risk of damage to the battery pack.

[0084] It will be understood by those skilled in the art that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lower protective plate for a reinforced battery pack, characterized in that, include: The protective plate body, steel beam, side protective plates, guard plate, and first positioning plate; The protective plate body includes: a first lower protective plate, a second lower protective plate and a third lower protective plate. The protective plate body is used to prevent road stones and mud and foreign objects from impacting the battery pack. The steel beam is fixedly installed on the top of the second lower guard plate, one end of the second lower guard plate is fixedly connected to the first lower guard plate, and the other end of the second lower guard plate is fixedly connected to the third lower guard plate. The side guards are fixedly connected to the first lower guard, the second lower guard and the third lower guard respectively. The side guards are symmetrical about the center of the guard body. The side guards are used to disperse the external lateral impact force. One end of the first positioning plate is fixedly connected to the third lower guard plate, and the other end of the first positioning plate is fixedly connected to the protective plate. The protective plate is used to deflect external impact force and disperse impact energy.

2. The lower protective plate of the reinforced battery pack according to claim 1, characterized in that, include: The first positioning plate is provided with a plurality of first positioning slots; Several of the first positioning slots are axially symmetrical about the center of the first positioning plate; The first lower guard plate is fixedly connected to the second positioning plate, and the second positioning plate is provided with a plurality of second positioning grooves; Several of the second positioning slots are axially symmetrical about the center of the second positioning plate.

3. The lower protective plate of the reinforced battery pack according to claim 1, characterized in that, include: The third lower guard plate is fixedly connected to the limiting plate; The limiting plate is axially symmetrical about the center of the third lower guard plate.

4. The lower protective plate of the reinforced battery pack according to claim 3, characterized in that, include: The side guard plate is provided with a plurality of first limiting holes, the first limiting holes penetrating the side guard plate; The first lower guard plate is provided with a plurality of second limiting holes, and the plurality of second limiting holes penetrate the first lower guard plate; The third lower guard plate is provided with a plurality of third limiting holes, and the plurality of third limiting holes penetrate the third lower guard plate; The limiting plate is provided with a fourth limiting hole, which penetrates the limiting plate.

5. The lower protective plate of the reinforced battery pack according to claim 1, characterized in that, include: The first lower guard plate is provided with a third protrusion, a fourth protrusion, a seventh protrusion, and an eighth protrusion; The third lower guard plate is provided with a ninth protrusion, a tenth protrusion, an eleventh protrusion and a twelfth protrusion; The first lower guard plate and the third lower guard plate are provided with a first protrusion, a second protrusion, a fifth protrusion and a sixth protrusion.

6. The lower protective plate of the reinforced battery pack according to claim 2, characterized in that, include: The first positioning plate is provided with a plurality of first positioning holes, the plurality of first positioning holes penetrate the first positioning plate, and the plurality of first positioning holes are axially symmetrical about the center of the first positioning plate; The second positioning plate is provided with a second positioning hole, which penetrates the second positioning plate; The second positioning plate is provided with a plurality of third positioning holes, the plurality of third positioning holes penetrate the second positioning plate, and the plurality of third positioning holes are axially symmetrical about the center of the second positioning plate; The second positioning plate is provided with a fourth positioning hole, which penetrates through the second positioning plate.

7. The lower protective plate of the reinforced battery pack according to claim 1, characterized in that, The steel beam includes: Beams, grooves, and square holes; The beam is fixedly connected to the second lower guard plate, and the groove is formed in the beam. The beam has several square holes, and the square holes penetrate the beam.

8. The lower protective plate of the reinforced battery pack according to claim 7, characterized in that, The steel beam also includes: a second through hole; The groove is provided with a plurality of second through holes; The second lower guard plate is provided with several first through holes; The positions of the first through holes and the second through holes correspond one-to-one.

9. The lower protective plate of the reinforced battery pack according to claim 1, characterized in that, include: Protective blocks are provided on the first lower guard plate and the third lower guard plate; The first lower guard plate is provided with an installation arrow, which is used to indicate the installation direction.

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