Battery module insulation fixing plate structure

Abstract

The utility model discloses a kind of battery module insulation fixed plate structure, it is related to battery technology field, including fixed plate body, fixed plate body lower part is equipped with first boss structure, upper part is equipped with second boss structure, both sides are equipped with longitudinally extended outer wall rib plate structure;First boss structure and second boss structure are longitudinally aligned along outer wall rib plate structure outside, and with outer wall rib plate structure and form integrated boss in enclosure;First boss structure and second boss structure both sides are symmetrically equipped with elliptical through-hole structure, metal sleeve ring structure is inlaid in elliptical through-hole structure, metal sleeve ring structure is closely attached with hole inner wall, two ends are respectively flush with the surface of first boss structure, second boss structure.The utility model is reinforced by multiple structure cooperation, integrated boss itself forms firm frame structure, can disperse the longitudinal and transverse load of module transmission, integrated boss outer surface square rib plate structure covers main body flat area, can further disperse local stress.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a battery module insulation fixing plate structure. Background Technology

[0002] In the field of battery technology, battery modules have become one of the core power components in the rail transit field due to their advantages of strong adaptability to production automation and flexible combination methods. These modules are usually composed of several individual batteries stacked together and connected in series and parallel through busbars. Their two ends need to be fixedly assembled with the internal beam of the battery box by relying on the fixing plate to form a stable installation structure.

[0003] However, existing insulating fixing plates lack precise positioning and guiding design during actual assembly, making them prone to twisting and misalignment due to uneven stress, affecting the assembly accuracy of the module and the box. Their structural strength design is not reasonable enough, and they are prone to deformation or fatigue damage when subjected to the weight and vibration load of the module for a long time. Their insulation protection and safety redundancy design are insufficient, making it difficult to completely avoid potential safety hazards during assembly and use. Their spatial layout lacks overall consideration, which limits the utilization rate of the internal space of the battery box and is not conducive to the integrated design of the battery pack. At the same time, some fixing plates have problems such as complex structure, cumbersome assembly process or inappropriate material selection, which indirectly increases manufacturing costs and the difficulty of later maintenance.

[0004] Therefore, this application provides a battery module insulation fixing plate structure to meet the requirements. Utility Model Content

[0005] The purpose of this application is to provide a battery module insulation fixing plate structure. To achieve the above purpose, this application provides the following technical solution: a battery module insulation fixing plate structure, including a fixing plate body, wherein the fixing plate body is provided with a first boss structure at the lower part, a second boss structure at the upper part, and longitudinally extending outer wall stiffeners on both sides. The first boss structure and the second boss structure are longitudinally aligned along the outer side of the outer wall stiffener structure, and together with the outer wall stiffener structure, they form an integrated boss. The integrated boss is higher than the surface of the fixed plate body, and a flat support surface is formed on the outer side. The first boss structure has a horizontal section that fits and conforms to the upper surface of the inner beam of the battery box. Both sides of the first boss structure and the second boss structure are symmetrically provided with elliptical through-hole structures. A metal ring structure is embedded in the elliptical through-hole structure. The metal ring structure is tightly fitted to the inner wall of the hole, and its two ends are flush with the surfaces of the first boss structure and the second boss structure, respectively.

[0006] Preferably, the outer surface of the integrated boss is provided with a grid rib structure. The grid rib structure is a uniform open grid protrusion with a grid depth equal to the height of the integrated boss. It covers the flat area of ​​the main body of the outer surface of the integrated boss and avoids the installation area of ​​the first boss structure, the functional structural area of ​​the upper part of the second boss structure, and the functional area of ​​the outer wall rib structure.

[0007] Preferably, the outer wall stiffener structure is a longitudinal strip protrusion with a thickness consistent with the height of the square stiffener structure protrusion, and its inner side is seamlessly connected to the vertical sections of the first boss structure and the second boss structure. The outer wall of the outer wall stiffener structure is provided with an arc-shaped groove structure. The arc-shaped groove structure is symmetrically arranged around the center of the outer wall of the stiffener, covering the entire longitudinal area of ​​the outer wall of the outer wall stiffener structure except for the central part. The two ends of the arc-shaped surface smoothly transition with the upper and lower end surfaces of the outer wall stiffener structure.

[0008] Preferably, the upper part of the elliptical through-hole structure has a reserved space for placing bolt heads and washers, and the metal collar structure is made of metal and is fixed in the elliptical through-hole structure by injection molding.

[0009] Preferably, a stiffening plate is provided on one side of the second boss structure, the stiffening plate is adjacent to the upper end of the outer wall stiffening plate structure, and both ends are seamlessly connected to the upper edge of the fixed plate body and the grid stiffening plate structure, respectively. The stiffener plate has a slotted structure in the middle, which penetrates both sides of the stiffener plate and the fixing plate body. The edge of the slotted structure is integrally formed with the stiffener plate.

[0010] Preferably, the second boss structure has a special-shaped boss structure in the middle of one side. The special-shaped boss structure is a cylindrical protrusion with a mounting hole that penetrates the second boss structure in the center. A metal nut is embedded in the mounting hole. The upper part of the special-shaped boss structure has a special-shaped boss hole groove structure that is coaxially aligned with the threaded hole of the metal nut. The special-shaped boss hole groove structure is a circular slot that communicates with the threaded hole.

[0011] Preferably, the integrated boss has a boss opening structure in the middle, and the boss opening structure is a cylindrical boss center hole structure, with the center hole penetrating the fixing plate body and the upper and lower surfaces of the integrated boss; The bottom surface of the fixing plate body is provided with an internal hexagonal slot structure that is coaxial with the boss opening structure, and the internal hexagonal slot structure is adapted to the end of the long tie rod.

[0012] Preferably, the inner side of the outer wall stiffener structure is provided with a hollow cylindrical structure. The hollow cylindrical structure is located at the lower end of the elliptical through hole structure. It is a cylindrical hollow structure with a height consistent with the longitudinal length of the outer wall stiffener structure. Both ends are flush with the surface of the fixed plate body, and the cylinder wall thickness is uniform.

[0013] Preferably, the fixing plate body, the first boss structure, the second boss structure, the outer wall stiffener structure and the grid stiffener structure are integrally molded from insulating and flame-retardant plastic, and the metal collar structure and the metal nut are fixed by injection molding.

[0014] In summary, the technical effects and advantages of this utility model are as follows: The first boss structure at the bottom of the fixing plate body, the second boss structure at the top, and the outer wall stiffening plate structure on both sides form an integrated boss. The outer side of the boss forms a flat support surface, and the horizontal section of the first boss structure can fit and conform to the upper surface of the inner beam of the battery box. Through surface contact positioning and integrated boss reference constraint, the accuracy of the fixing plate installation can be ensured without additional positioning components, effectively avoiding twisting and misalignment caused by positioning loss during assembly, and ensuring the assembly consistency of the battery module and the box. This invention utilizes a multi-layered structural reinforcement system. The integrated boss itself forms a stable frame structure, distributing the longitudinal and lateral loads transmitted by the module. The grid-like ribbed structure on the outer surface of the integrated boss covers the flat area of ​​the main body, further dispersing localized stress and preventing cracking due to stress concentration on the boss surface. The longitudinally extending ribbed structures on both sides seamlessly connect with the first and second boss structures, enhancing the bending resistance of the fixed plate's sides. The connection between the ribbed structures, the grid-like ribbed structure, and the fixed plate body strengthens the load-bearing capacity of the upper part of the second boss structure. This structural combination significantly improves the overall deformation and fatigue resistance of the fixed plate, enabling it to withstand the gravity loads and vibration conditions of the battery module for extended periods. In this utility model, the core structures such as the fixing plate body, the first boss structure, and the second boss structure are integrally molded from insulating and flame-retardant plastic, which blocks the leakage path of current from the material level and avoids leakage between the metal parts of the battery module and the beams inside the box. The metal collar structure and the metal nut are fixed by injection molding, with no exposed conductive parts, which can prevent electrical safety problems caused by contact between metal parts during assembly. The arc-shaped groove structure on the outer wall of the outer wall stiffener structure is an integrated arc-shaped grinding design with no sharp edges, which can not only prevent assembly personnel from being scratched, but also prevent wear on the battery module wires and components, thus improving the safety of use from both electrical safety and assembly safety aspects. This utility model's integrated boss combines multiple functions such as positioning, load-bearing, and heat dissipation, eliminating the need for additional independent positioning plates, reinforcing plates, and other components, significantly reducing the number of parts. Simultaneously, its compact structural layout fully utilizes the space within the battery box, reserving more space for integrated battery pack design. All plastic structures are manufactured using a one-piece molding process, and metal components are fixed through injection molding, eliminating the need for subsequent splicing or assembly steps, simplifying the processing flow and reducing manufacturing costs. Furthermore, the rationally designed positions of functional structures such as the elliptical through-hole structure, the boss opening structure, and the hollow cylindrical structure eliminate the need for complex adjustments during assembly, and facilitate convenient disassembly and replacement of components during later maintenance, reducing maintenance difficulty and time costs. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a top view of the structure of this utility model; Figure 3 This is a front view structural diagram of the present utility model; Figure 4 This is a side view sectional structural diagram of the present invention.

[0017] In the diagram: 1. First boss structure; 2. Square rib plate structure; 3. Outer wall rib plate structure; 4. Arc-shaped groove structure; 5. Elliptical through hole structure; 6. Rib plate; 7. Metal nut; 8. Irregular boss structure; 9. Slot structure; 10. Fixing plate body; 11. Boss opening structure; 12. Internal hexagonal slot structure; 13. Hollow cylinder structure; 14. Metal collar structure; 15. Irregular boss hole and slot structure; 16. Second boss structure. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example: Reference Figure 1-4 The battery module insulation fixing plate structure shown includes: The first boss structure 1 and the second boss structure 16 are located at the lower and upper parts of the fixed plate body 10, respectively. They are longitudinally aligned along the outer side of the outer wall stiffener structure 3 and enclosed with the outer wall stiffener structure 3 to form an integrated boss that is higher than the fixed plate body 10. The height of the boss is 10-40mm higher than the surface of the fixed plate body 10, and a flat support surface is formed on the outer side. The horizontal section of the first boss structure 1 is adapted to fit the upper surface of the inner beam of the battery box to achieve installation positioning.

[0020] The square grid rib structure 2 is distributed on the outer surface of the integrated boss. It is a uniform open grid protrusion with a grid depth equal to the height of the integrated boss. It covers the main flat area of ​​the outer surface of the integrated boss, avoiding the installation area of ​​the first boss structure 1 at the bottom of the fixed plate body 10, the distribution area of ​​the upper irregular boss structure 8 and rib 6, the opening area of ​​the arc-shaped groove structure 4 on both sides and the hollow cylindrical structure 13, and the surrounding area of ​​the central boss opening structure 11. It forms a continuous and regular grid only on the flat surface outside the above areas. The grid lines are unbroken and smoothly transition with the edges of the avoided areas.

[0021] The outer wall stiffening plate structure 3 consists of longitudinal strip-shaped protrusions on both sides of the fixed plate body 10. The thickness is the same as the height of the protrusions of the grid stiffening plate structure 2, and it extends from the upper part to the lower part of the fixed plate body 10.

[0022] The arc-shaped groove structure 4 is an integrated arc-shaped grinding structure symmetrically set at the center of the outer wall of the outer wall stiffener structure 3. The radius of the arc surface after grinding is 2-3mm, covering all longitudinal areas of the outer wall of the outer wall stiffener structure 3 except for the central part. The two ends of the arc surface smoothly transition with the upper and lower end surfaces of the outer wall stiffener structure 3. The inner side of the arc surface is seamlessly connected with the main protruding part of the outer wall stiffener structure 3, without obvious processing marks. It is used to constrain the module packing strap and prevent it from shifting up and down.

[0023] Elliptical through-hole structures 5 are symmetrically distributed on both sides of the first boss structure 1 and the second boss structure 16, located on one side of the hollow cylindrical structure 13. The major axis of the hole is along the longitudinal direction and the minor axis is along the transverse direction. A 3-4mm space is reserved at the top for placing bolt heads and washers. A metal collar structure 14 (made of galvanized steel) is embedded in the hole, which fits tightly against the inner wall of the hole. Both ends are flush with the surfaces of the first boss structure 1 and the second boss structure 16.

[0024] The stiffening plate 6 is located on one side of the second protrusion structure 16 and is adjacent to the upper end of the outer wall stiffening plate structure 3. It is a strip-shaped reinforcing rib structure. Both ends are seamlessly connected to the upper edge of the fixed plate body 10 and the square stiffening plate structure 2, respectively. The slot structure 9 is a rectangular slot that penetrates both sides of the stiffening plate 6 and the fixed plate body 10. One end is located in the middle of the stiffening plate 6. The edge of the slot is integrally formed with the stiffening plate 6, and the inner wall is smooth and burr-free.

[0025] The irregular boss structure 8 is located in the middle of one side of the second boss structure 16. It is a cylindrical protrusion with a mounting hole in the center that fits a metal nut 7 and passes through the middle of one side of the second boss structure 16. The metal nut 7 (made of copper alloy) is completely embedded in the mounting hole, and the threaded hole is coaxially aligned with the irregular boss slot structure 15.

[0026] The irregular boss hole and slot structure 15 is opened on the upper part of the irregular boss structure 8. It is a circular slot that communicates with the threaded hole of the metal nut 7 to accommodate the bolt head and facilitate the fixing of the metal strip led out from the module.

[0027] The boss opening structure 11 is located in the middle of the integrated boss. It is a cylindrical boss with a central hole. The central hole penetrates the upper and lower surfaces of the fixing plate body and the integrated boss, and is suitable for the installation of long tie rods. The internal hexagonal slot structure 12 is opened on the bottom surface of the fixing plate body 10 and is coaxial with the boss opening structure 11. It is a standard internal hexagon (the distance between the opposite sides of the hexagon is adapted to the end of the long tie rod).

[0028] The hollow cylindrical structure 13 is located inside the outer wall stiffening plate structure 3 and at the lower end of the elliptical through hole structure 5. It is a cylindrical hollow structure with a height consistent with the longitudinal length of the outer wall stiffening plate structure 3. Both ends are flush with the surface of the fixed plate body, and the cylinder wall thickness is uniform.

[0029] As one implementation method in this embodiment, several individual batteries are stacked according to the design specifications and connected in series and parallel through a busbar to form a complete battery module. Two insulating fixing plates described in this utility model are then taken and positioned at the assembly positions at both ends of the battery module. During assembly, the integrated boss is used as the core positioning reference. The boss is formed by the first boss structure 1 at the bottom of the fixing plate body 10, the second boss structure 16 at the top, and the outer wall stiffeners 3 on both sides. The overall size is 10-40mm higher than the surface of the fixing plate body 10, and a flat support surface is formed on the outside. During operation, the horizontal section of the first boss structure 1 is slowly attached to the upper surface of the inner beam of the battery box. The contact surface is observed to be completely seamless. If there is a local gap, the overall position of the fixing plate body 10 needs to be finely adjusted (such as shifting back and forth or rotating slightly, rather than adjusting the boss structure) until the horizontal section of the first boss is completely attached to the upper surface of the inner beam, and the flat support surface on the outside of the integrated boss is parallel to the side of the inner beam.

[0030] As one implementation method in this embodiment, the grid rib structure 2 is distributed on the outer surface of the integrated boss, and is a uniform open grid-shaped protrusion. Its grid depth is equal to the height of the integrated boss. Before assembly, it is necessary to confirm the coverage area of ​​the grid rib. It is necessary to avoid the inner beam contact area of ​​the first boss structure 1 at the bottom of the fixed plate body 10 (to avoid affecting the positioning fit), the distribution area of ​​the upper irregular boss structure 8 and rib 6 (to prevent interference with the fixing and hoisting of the metal strip), the opening area of ​​the arc-shaped groove structure 4 on both sides and the hollow cylindrical structure 13 (to ensure lightweight and wire harness fixing function), and the peripheral area of ​​the opening structure 11 of the middle boss (to not hinder the assembly of the long tie rod). Only on the flat surface of the integrated boss body outside the above areas, a continuous and regular grid is formed, and the grid lines smoothly transition with the edges of each avoided area without obvious steps or breaks, ensuring that the grid protrusion is not deformed or missing material. Its thickness is consistent with the protrusion height of the outer wall rib structure 3. Subsequently, the grid structure can be used to disperse the force on the integrated boss, while increasing the contact area between the outer surface of the boss and the air, providing assistance for the heat dissipation of the module.

[0031] In one embodiment of this invention, the outer wall stiffener structure 3 consists of longitudinal strip-shaped protrusions on both sides of the fixed plate body 10. The thickness of these protrusions is the same as the height of the square stiffener structure 2, extending from the upper to the lower part of the fixed plate body 10. During assembly, it is necessary to confirm the integrity of its connection with the integrated boss. The inner side of the outer wall stiffener structure 3 must seamlessly connect with the vertical sections of the first boss structure 1 and the second boss structure 16. The outer wall is formed by arc-shaped grinding to create an arc-shaped groove structure 4. This arc-shaped groove structure 4 is an integrated design of the outer wall of the outer wall stiffener structure 3, with the center of the outer wall of the stiffener as a symmetrical reference. Grinding covers the entire longitudinal area except for the central part, with an arc radius of 2-3mm. The two ends smoothly transition to the upper and lower end faces of the outer wall rib structure 3, without sharp edges or processing burrs. During assembly, it is important to ensure that the arc surface faces the non-critical interference area inside the battery box. This grinding removes redundant plastic material from the outer wall rib (e.g., a weight reduction of 1-2g on one side, and a total weight reduction of 2-4g on both sides), achieving a lightweight fixing plate and preventing scratches to assembly personnel. At the same time, the arc surface can guide the airflow inside the battery box to flow smoothly along the outside of the boss, helping to optimize the heat dissipation environment around the module.

[0032] In one embodiment of this invention, the elliptical through-hole structure 5 is symmetrically distributed on both sides of the first boss structure 1 and the second boss structure 16, and is located on one side of the hollow cylindrical structure 13. During assembly, impurities inside the elliptical through-hole are first cleaned to ensure that the hole wall is smooth. Since the galvanized steel metal ring structure 14 has been injection molded and embedded inside the hole, it is necessary to confirm that the metal ring is tightly fitted to the inner wall of the hole, and that both ends are flush with the surfaces of the first boss structure 1 and the second boss structure 16, respectively, without any protrusions or depressions. Then, the fixing plate is rigidly fixed to the inner beam of the battery box. Place a bolt head and washer of appropriate size in the 3-4mm space reserved on the upper part of the elliptical through hole structure 5, ensuring that the bolt head is fully embedded in the space and does not interfere with other parts. Take the long bolt, pass it through the elliptical through hole and the metal collar, align it with the threaded hole of the inner beam of the battery box, and tighten the bolt clockwise with a torque wrench according to the design torque until there is no relative looseness between the fixing plate and the inner beam. The metal collar structure 14 can effectively enhance the compressive strength of the elliptical through hole, prevent the plastic material from cracking due to the stress of bolt tightening, and ensure the long-term stability of the bolt connection.

[0033] In one embodiment of this invention, the stiffener 6 is located on one side of the second boss structure 16, adjacent to the upper end of the outer wall stiffener structure 3. It is a strip-shaped reinforcing rib structure, and its two ends are seamlessly connected to the upper edge of the fixing plate body 10 and the square stiffener structure 2, respectively. During assembly, the structural strength of the stiffener must be checked first. The stiffener is gently bent by hand to confirm that there is no obvious deformation or loosening, ensuring that it can withstand the lifting weight of the battery module. The slot structure 9 is a rectangular slot that penetrates both sides of the stiffener 6 and the fixing plate body 10, with one end located in the stiffener 6. The groove edge and the rib plate are integrally formed, and the inner wall is smooth and burr-free. When it is necessary to lift the battery module, the hook or sling of the lifting equipment is embedded in the groove structure 9 to ensure that the hook is completely attached to the inner wall of the groove without shaking. Before lifting, confirm the stability of the fit between the hook and the groove. Keep the module horizontal during the lifting process to avoid tilting and uneven stress on the rib plate. The strip reinforcement design of the rib plate 6 and the synergy of the groove structure 9 can simultaneously achieve the dual functions of lifting load and strengthening the upper part of the boss, avoiding local breakage of the second boss structure 16 during lifting.

[0034] In one embodiment, the irregular boss structure 8 is located in the middle of one side of the second boss structure 16. It is a cylindrical protrusion with a mounting hole in the center that penetrates the middle of the side of the second boss structure 16. The copper alloy metal nut 7 is fully embedded in the mounting hole, and the threaded hole of the metal nut is coaxially aligned with the irregular boss slot structure 15 on the upper part of the irregular boss structure 8. Before assembly, it is necessary to confirm that the threaded hole is not blocked or stripped. When fixing the module lead-out metal strip, first align the preset hole position of the module lead-out metal strip with the irregular boss structure 8. Align the boss hole and slot structure 15 to ensure that the metal strip fits against the upper surface of the irregular boss structure 8. Take a metal bolt, pass it through the hole in the metal strip and the irregular boss hole (the slot is round and can accommodate the bolt head), and slowly screw it into the threaded hole of the metal nut 7 until the bolt head is completely embedded in the irregular boss hole and slot without any protrusion. Finally, use a torque wrench to tighten the bolt to the designed torque to ensure that the metal strip and the metal nut are in close contact without any gaps. The embedded design of the metal nut 7 can increase the effective conductive area, avoid excessive local resistance and heat generation, and ensure electrical connection safety.

[0035] As one implementation method in this embodiment, if the assembled battery module is cylindrical, it needs to be specifically fixed through the boss opening structure 11 and the internal hexagonal slot structure 12. The boss opening structure 11 is located in the middle of the integrated boss and is a cylindrical boss + center hole structure. The center hole penetrates the upper and lower surfaces of the fixing plate body 10 and the integrated boss. During assembly, the long pull rod (the diameter of which is adapted to the center hole) is first passed through the center hole from the outside of the integrated boss, through the preset channel of the cylindrical battery module, and then extended to the boss opening structure 11 of the fixing plate on the other side. Then, the lower end of the long pull rod is aligned with the internal hexagonal slot structure 12 on the bottom surface of the fixing plate body 10. The slot is a standard internal hexagon, and the distance between the opposite sides of the hexagon is completely matched with the size of the end of the long pull rod. The end of the long pull rod is embedded in the internal hexagonal slot. Through the limiting effect of the slot, the long pull rod is prevented from fatigue rotation when the module vibrates. Finally, the locking component of the long pull rod is tightened according to the design requirements to ensure that the cylindrical battery module is firmly constrained between the two fixing plates and there is no axial movement.

[0036] As one implementation method in this embodiment, the hollow cylindrical structure 13 is located inside the outer wall stiffener structure 3, at the lower end of the elliptical through-hole structure 5. It is a cylindrical hollow structure with a height consistent with the longitudinal length of the outer wall stiffener structure 3. Both ends are flush with the surface of the fixing plate body 10. The cylinder wall thickness is uniform. When the temperature acquisition wires, voltage detection wires, etc. inside the battery module need to be arranged along the inner side of the outer wall stiffener 3, the cylindrical end of the wire harness fixing buckle can be inserted into the hollow cylinder (the buckle diameter is adapted to the inner diameter of the cylinder and fixed with an interference fit), or a thin cable tie can be passed through the central hole of the hollow cylinder to tie the wire harness to the cylinder to achieve fixed-point fixation of the wire harness. After assembly, the fixing effect of the wire harness needs to be checked. Gently pull the wire to confirm that there is no obvious looseness. Avoid the wire from entering the bolt area of ​​the elliptical through-hole structure 5 or rubbing against the arc surface of the arc groove structure 4 due to vibration. At the same time, ensure that the wire harness does not block the operating space of other functional structures and ensure the convenience of subsequent maintenance.

[0037] The electromechanical connections involved in this utility model are common practices used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments; they are common knowledge.

[0038] Components not described in detail in this article are existing technologies.

[0039] Finally, it should be noted that the above description is only 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 battery module insulation fixing plate structure, comprising a fixing plate body (10), characterized in that: The fixed plate body (10) has a first boss structure (1) at the bottom, a second boss structure (16) at the top, and longitudinally extending outer wall stiffeners (3) on both sides. The first boss structure (1) and the second boss structure (16) are longitudinally aligned along the outer side of the outer wall stiffener structure (3) and are enclosed with the outer wall stiffener structure (3) to form an integrated boss. The integrated boss is higher than the surface of the fixed plate body (10) and forms a flat support surface on the outside. The first boss structure (1) has a horizontal section that fits and conforms to the upper surface of the inner beam of the battery box. The first boss structure (1) and the second boss structure (16) are symmetrically provided with elliptical through hole structures (5) on both sides. The elliptical through hole structure (5) is inlaid with a metal collar structure (14). The metal collar structure (14) is tightly attached to the inner wall of the hole, and its two ends are flush with the surfaces of the first boss structure (1) and the second boss structure (16) respectively.

2. The battery module insulation fixing plate structure according to claim 1, characterized in that: The outer surface of the integrated boss is distributed with a grid rib structure (2). The grid rib structure (2) is a uniform open grid protrusion with a grid depth equal to the height of the integrated boss. It covers the flat area of ​​the main body of the outer surface of the integrated boss and avoids the installation area of ​​the first boss structure (1), the functional structure area of ​​the upper part of the second boss structure (16), and the functional area of ​​the outer wall rib structure (3).

3. The battery module insulation fixing plate structure according to claim 1, characterized in that: The outer wall stiffener structure (3) is a longitudinal strip protrusion with a thickness consistent with the protrusion height of the square stiffener structure (2). Its inner side is seamlessly connected to the vertical sections of the first boss structure (1) and the second boss structure (16). The outer wall stiffener structure (3) has an arc-shaped groove structure (4) on its outer side wall. The arc-shaped groove structure (4) is symmetrically arranged around the center of the outer wall stiffener, covering the entire longitudinal area of ​​the outer wall stiffener structure (3) except for the central part. The two ends of the arc-shaped surface smoothly transition with the upper and lower end surfaces of the outer wall stiffener structure (3).

4. The battery module insulation fixing plate structure according to claim 1, characterized in that: The upper part of the elliptical through-hole structure (5) has a reserved space for placing bolt heads and washers. The metal collar structure (14) is made of metal and is fixed in the elliptical through-hole structure (5) by injection molding.

5. The battery module insulation fixing plate structure according to claim 1, characterized in that: The second boss structure (16) has a stiffening plate (6) on one side. The stiffening plate (6) is adjacent to the upper end of the outer wall stiffening plate structure (3), and its two ends are seamlessly connected to the upper edge of the fixed plate body (10) and the grid stiffening plate structure (2). The stiffener (6) has a slot structure (9) in the middle, which penetrates the two sides of the stiffener (6) and the fixing plate body (10). The edge of the slot is integrally formed with the stiffener (6).

6. The battery module insulation fixing plate structure according to claim 1, characterized in that: The second boss structure (16) has a special boss structure (8) in the middle of one side. The special boss structure (8) is a cylindrical protrusion with a mounting hole that passes through the second boss structure (16) in the center. A metal nut (7) is embedded in the mounting hole. The upper part of the special boss structure (8) has a special boss hole groove structure (15) that is coaxially aligned with the threaded hole of the metal nut (7). The special boss hole groove structure (15) is a circular slot and communicates with the threaded hole.

7. The battery module insulation fixing plate structure according to claim 1, characterized in that: The integrated boss has a boss opening structure (11) in the middle. The boss opening structure (11) is a cylindrical boss center hole structure. The center hole penetrates the fixed plate body (10) and the upper and lower surfaces of the integrated boss. The bottom surface of the fixed plate body (10) is provided with an internal hexagonal slot structure (12) that is coaxial with the boss opening structure (11), and the internal hexagonal slot structure (12) is adapted to the end of the long tie rod.

8. The battery module insulation fixing plate structure according to claim 1, characterized in that: The inner side of the outer wall stiffener structure (3) is provided with a hollow cylindrical structure (13). The hollow cylindrical structure (13) is located at the lower end of the elliptical through hole structure (5). It is a cylindrical hollow structure with a height consistent with the longitudinal length of the outer wall stiffener structure (3). Both ends are flush with the surface of the fixed plate body (10), and the cylinder wall thickness is uniform.

9. The battery module insulation fixing plate structure according to claim 1, characterized in that: The fixed plate body (10), the first boss structure (1), the second boss structure (16), the outer wall stiffener structure (3) and the grid stiffener structure (2) are integrally molded from insulating and flame-retardant plastic, and the metal collar structure (14) and the metal nut (7) are fixed by injection molding.

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