Plastic-coated laminated copper bar structure with one-time injection molding main body

Abstract

The invention relates to the technical field of injection molding copper bars, and discloses a plastic-coated laminated copper bar structure with a main body subjected to one-time injection molding, the plastic-coated laminated copper bar structure comprises a plurality of groups of copper bars which are vertically distributed at equal intervals, and the outer sides of the plurality of groups of copper bars are subjected to plastic-coated fixation by adopting a plastic-coated body subjected to one-time injection molding; sealing assemblies are fixed at two ends of the plastic-coated body, and the copper bar penetrates through and extends out of the sealing assemblies; the sealing assembly comprises a sealing end cover, a pressing sealing piece, a glue injection self-sealing piece and a sealing cover fixed to the tail end of the sealing end cover, wherein the pressing sealing piece and the glue injection self-sealing piece are arranged in the sealing end cover, and a glue injection sealing mechanism is further arranged in the sealing end cover. Multi-barrier cooperation is achieved, sealing protection is comprehensively upgraded, the sealing assembly is installed for sealing, no extra glue injection equipment is needed, manual operation errors are reduced, and the consistency of the sealing effect is ensured. The structure is high in damage resistance, structural damage caused by too large local stress is avoided, and the integrity of the whole structure is protected.

Description

Technical Field

[0001] This invention relates to the field of injection-molded copper busbar technology, specifically to a plastic-coated laminated copper busbar structure with a main body injection molded in one step. Background Technology

[0002] In modern electrical systems, copper busbars, as critical conductive components, are widely used in various electrical equipment, such as distribution cabinets, transformers, and battery pack connections in new energy vehicles. Their performance directly affects the stability and safety of the entire electrical system. Common copper busbar structures typically include several sets of upper and lower copper busbars, a plastic-coated body surrounding these busbars, and end caps at both ends of the plastic-coated body. The end caps secure the copper busbars and the plastic-coated body, strengthening the connection. However, simple end caps offer poor fixation, and excessive localized stress can damage the connection between the copper busbars and the plastic-coated body. Furthermore, simple end caps provide poor sealing; if foreign objects or rainwater enter, electrical continuity may occur in the copper busbars, leading to insulation failure and reduced safety. Therefore, we have introduced a novel plastic-coated laminated copper busbar structure with a single-injection molding process. Summary of the Invention

[0003] The purpose of this invention is to provide a plastic-coated laminated copper busbar structure with a main body injection molded in one step, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A composite copper busbar structure with a single injection molding process includes several groups of copper busbars distributed at equal intervals, and the outer sides of the groups of copper busbars are coated and fixed by a single injection molding body. The two ends of the plastic-coated body are fixed with sealing components, and the copper busbar extends through the sealing components; The sealing assembly includes a sealing end cap, a pressing seal and an adhesive self-sealing component disposed inside the sealing end cap, and a cap fixed at the end of the sealing end cap. The sealing end cap is also provided with an adhesive injection sealing mechanism inside. After the sealing end cap is snapped onto the outside of the end of the plastic-coated body, the pressing seal and the self-sealing adhesive injection component squeeze each other, so that the pressing seal is pressed and sealed on the outside of the corresponding copper busbar, and the self-sealing adhesive injection component is sealed on the outside of the corresponding copper busbar by insulating adhesive. At the same time, the adhesive injection sealing mechanism is sealed on the outside of the plastic-coated body by insulating adhesive after being compressed.

[0005] Preferably, the inner side of the sealing end cap is provided with a concave groove that is engaged with the outer side of the end of the plastic-coated body. The concave groove is provided with receiving grooves that are evenly spaced at the top and bottom. The middle of the receiving groove is provided with a first through slot for the copper busbar to extend through. The receiving groove is used to snap-fit ​​and press the sealant and the self-sealing component.

[0006] Preferably, the self-sealing component includes several sets of rigid frames distributed at equal intervals, an injection groove provided on the inner side of the rigid frame, and an injection capsule provided in the annular arc groove on the outer side of the injection groove. The rigid frame is provided with several sets of abutment blocks and several sets of insertion holes on the same side, and the insertion holes are connected to the annular arc groove.

[0007] Preferably, the compression sealing element includes several sets of rubber frames distributed at equal intervals, and several sets of inclined surfaces and several sets of plug-in posts are provided on the same side of the rubber frames. The plug-in posts are inserted into the corresponding plug-in holes, and the abutment block matches the corresponding inclined surface.

[0008] Preferably, the glue injection sealing mechanism includes several sets of glue receiving holes distributed vertically inside the sealing end cap, a piston disposed inside the glue receiving hole, an abutment rod integrally formed in the middle of the piston, and a glue channel connected to the outer end of the glue receiving hole. The abutment rod extends through the glue receiving hole and into the concave groove. The side wall of the concave groove is provided with a glue injection groove that communicates with the inner end of the glue channel.

[0009] Preferably, the cap is fixed to the outer end of the sealing end cap with bolts, and the cap is used to seal the outer end of the glue receiving hole.

[0010] Preferably, the inner side of the cover is provided with several sets of equally spaced springs on the upper and lower parts, the inner ends of the springs extend into the corresponding glue receiving holes, and the cover is also provided with rubber plugs, which are set at the outer ends of the corresponding glue receiving holes.

[0011] Preferably, the cover is provided with second through slots evenly spaced vertically, the second through slots being used for the through extension of the corresponding copper busbar.

[0012] Compared with the prior art, the beneficial effects of the present invention are: the present invention has multiple barriers working together to comprehensively upgrade protection: the pressing and sealing component forms the first physical barrier, and the self-sealing component bursts and injects glue to form the second insulating barrier. The dual synergy prevents dust and moisture from contacting the copper busbar; when the sealing end cap is connected to the plastic body, the glue injection sealing mechanism is automatically triggered, and the insulating glue fills the gap to form the third barrier, preventing external impurities from seeping in from the connection.

[0013] The sealing component of this invention seals upon installation, is simple to install, requires no additional adhesive injection equipment, reduces human error, and ensures consistent sealing performance.

[0014] The present invention has strong structural resistance and extended service life: the concave groove of the sealing end cap is perfectly matched with the end of the plastic-coated body, and each copper busbar is fixed by an independent rigid frame to avoid structural damage caused by excessive local stress and protect the integrity of the overall structure. Attached Figure Description

[0015] Figure 1 This is an exploded structural diagram of the sealing component and the plastic coating assembly of the present invention; Figure 2 This is an exploded structural diagram of the sealing assembly of the present invention; Figure 3 This is a three-dimensional structural diagram of the self-sealing adhesive injection part of the present invention; Figure 4 For the present invention Figure 3 A schematic diagram of the three-dimensional structure from another perspective; Figure 5 This is a three-dimensional structural diagram of the rigid frame of the present invention; Figure 6 For the present invention Figure 5 A schematic diagram of the cross-sectional structure; Figure 7 This is a three-dimensional structural diagram of the compression sealing element of the present invention; Figure 8 This is a three-dimensional structural diagram of the rubber frame of the present invention; Figure 9 This is a three-dimensional structural diagram of the assembly of the self-sealing adhesive injection component and the compression sealing component of the present invention; Figure 10 For the present invention Figure 9 A schematic diagram of the cross-sectional structure; Figure 11 This is a schematic diagram of the structure of the sealing end cap of the present invention; Figure 12 For the present invention Figure 11 A schematic diagram of the cross-sectional structure; Figure 13 This is a three-dimensional structural diagram of the cap of the present invention; Figure 14 For the present invention Figure 13 A schematic diagram of the three-dimensional structure from another perspective; Figure 15 This is a cross-sectional view of the assembled self-sealing component, compression seal, sealing end cap, and sealing cap of the present invention. Figure 16 This is a three-dimensional structural diagram of the assembled plastic-coated body, copper busbar, and sealing assembly of the present invention; Figure 17 This is a partial cross-sectional view of the assembled plastic body, copper busbar, and sealing assembly of the present invention.

[0016] In the diagram: 1. Plastic-coated body; 2. Copper busbar; 3. Sealing assembly; 301. Sealing end cap; 3011. Recessed groove; 3012. Receiving groove; 3013. First through slot; 3014. Injection groove; 3015. Abutment rod; 3016. Glue channel; 3017. Piston; 3018. Glue receiving hole; 302. Cap; 3021. Second through slot; 3022. Bolt; 3023. Spring; 3024. Rubber plug; 303. Injection self-sealing component; 3031. Rigid frame; 3032. Injection capsule; 3033. Abutment block; 3034. Insertion hole; 3035. Annular arc groove; 3036. Injection groove; 304. Compression seal; 3041. Rubber frame; 3042. Insertion post; 3043. Sloping surface. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Example: Please see Figures 1-17 The present invention provides a technical solution: A composite copper busbar structure with a single injection molding process includes several groups of copper busbars 2 evenly spaced vertically. The outer sides of each group of copper busbars 2 are coated and fixed using a single injection molding body 1. This single-stage injection molding process satisfies the insulation performance requirements between the copper busbars 2, resulting in more stable insulation performance, eliminating insulation test failure issues between the copper busbars 2, and lower manufacturing costs. The coating body 1 is formed after the injection molding material solidifies.

[0019] The encapsulated body 1 is formed by one injection molding process, which initially fixes and insulates the copper busbar 2.

[0020] Process start-up: Place several groups of copper busbars 2 that have been pre-arranged at equal intervals into a special injection mold. The mold cavity must match the distribution pattern of the copper busbars 2 and the shape of the final encapsulated body 1.

[0021] Injection molding process: Molten insulating injection molding material (such as modified nylon, epoxy resin, etc.) is injected into the mold. The injection molding material flows fully in the mold, filling the gaps between the copper busbars 2 and the space outside the copper busbars 2, ensuring that the copper busbars 2 are completely wrapped.

[0022] Molding and curing: After a certain period of cooling and curing in the mold, the injection molding material forms a plastic-coated body 1 that is tightly bonded to the copper busbar 2. In this process, a single injection molding process can avoid the interface delamination problem caused by multiple injection molding, ensuring that there are no air bubbles or gaps between the plastic-coated body 1 and the copper busbar 2, directly meeting the insulation performance requirements between the copper busbars 2, and eliminating the risk of insulation test failure between the copper busbars 2 from the root.

[0023] One-time injection molding creates a seamless bond between the plastic-coated body 1 and the copper busbar 2, eliminating defects such as interface delamination and bubbles that may occur with multiple injection molding. This avoids insulation test failure issues between the copper busbars 2 from the structural root, and improves the stability of insulation performance compared to traditional multiple injection molding or manual wrapping of insulation layers.

[0024] The single-injection molding process reduces the time and cost of mold changes and process connections, while avoiding the additional material waste required for multiple injections. Calculations show that compared with the traditional structure, the manufacturing cost is reduced and the production efficiency is improved.

[0025] The plastic-coated body 1 and the copper busbar 2 are tightly integrated to form a unified whole structure, which can effectively resist external forces such as vibration and impact, reduce poor contact problems caused by displacement of the copper busbar 2, and extend the service life of the structure.

[0026] The two ends of the plastic-coated body 1 are fixed with sealing components 3. The copper busbar 2 extends through the sealing components 3. The sealing components 3 include a sealing end cap 301, a pressing sealing element 304 and an injection self-sealing element 303 provided inside the sealing end cap 301, and a cap 302 fixed at the end of the sealing end cap 301. The sealing end cap 301 is also provided with an injection sealing mechanism inside. The inner side of the sealing end cap 301 is provided with a recessed groove 3011 that is snapped onto the outer side of the end of the plastic-coated body 1. The recessed groove 3011 is provided with receiving grooves 3012 that are evenly spaced at the top and bottom. The middle of the receiving groove 3012 is provided with a first through slot 3013 for the copper busbar 2 to extend through. The receiving groove 3012 is used to snap and press the sealing member 304 and the self-sealing member 303.

[0027] The shape of the concave groove 3011 perfectly matches the shape of the end of the plastic-coated body 1, allowing for quick positioning and docking of the sealing end cap 301 and the plastic-coated body 1 during installation without additional adjustments, thus improving installation efficiency.

[0028] The concave groove 3011 has a large contact area with the end of the plastic-coated body 1, which can evenly transmit the external extrusion pressure to the internal sealing unit (injection self-sealing part 303 and compression sealing part 304) and the injection sealing mechanism, avoiding structural damage caused by excessive local stress, while ensuring that the compression sealing effect of the sealing unit is consistent.

[0029] The self-sealing component 303 includes several sets of rigid frames 3031 with equal vertical spacing, an injection groove 3036 provided on the inner side of the rigid frame 3031, and an injection capsule 3032 provided in the annular arc groove 3035 on the outer side of the injection groove 3036; several sets of abutment blocks 3033 and several sets of insertion holes 3034 are provided on the same side of the rigid frame 3031, and the insertion holes 3034 are connected to the annular arc groove 3035.

[0030] The compression sealing element 304 includes several sets of rubber frames 3041 distributed at equal intervals. On the same side of the rubber frames 3041, there are several sets of inclined surfaces 3043 and several sets of plug-in posts 3042. The plug-in posts 3042 are inserted into the corresponding plug-in holes 3034, and the abutment blocks 3033 match the corresponding inclined surfaces 3043.

[0031] The precise fit between the plug post 3042 and the plug hole 3034 ensures that the rigid frame 3031 of the self-sealing component 303 and the rubber frame 3041 of the compression seal 304 are horizontally distributed inside and outside in the corresponding receiving groove 3012 after pre-assembly.

[0032] The inclined surfaces of the abutment block 3033 and the ramp surface 3043 cooperate to convert the axial extrusion force of the sealing end cap 301 into the radial expansion force of the sealing element 304, so that the rubber frame 3041 fits the copper busbar 2 more tightly. At the same time, the injection capsule 3032 is triggered to rupture and inject glue, forming the first physical sealing barrier and the second insulating sealing barrier, realizing dual sealing synergy and improving sealing reliability.

[0033] The glue injection sealing mechanism includes several sets of glue receiving holes 3018 arranged vertically inside the sealing end cap 301, a piston 3017 disposed inside the glue receiving hole 3018, an abutment rod 3015 integrally formed in the middle of the piston 3017, and a glue channel 3016 connected to the outer end of the glue receiving hole 3018. The abutment rod 3015 extends through the glue receiving hole 3018 and extends into the concave groove 3011. The side wall of the concave groove 3011 is provided with a glue injection groove 3014 communicating with the inner end of the glue channel 3016.

[0034] The cap 302 is fixed to the outer end of the sealing end cap 301 by bolts 3022. The cap 302 is used to seal the outer end of the glue receiving hole 3018.

[0035] The inner side of the cover 302 is provided with several sets of equally spaced springs 3023 on the upper and lower parts. The inner end of the spring 3023 extends into the corresponding glue receiving hole 3018. The cover 302 is also provided with a rubber plug 3024, which is located at the outer end of the corresponding glue receiving hole 3018.

[0036] The cover 302 is provided with second through slots 3021 distributed at equal intervals on the top and bottom, and the second through slots 3021 are used for the through extension of the corresponding copper busbar 2.

[0037] The end of the plastic-coated body 1 presses against the abutment rod 3015 of the glue injection sealing mechanism, causing the abutment rod 3015 to move into the glue receiving hole 3018. The movement of the abutment rod 3015 drives the piston 3017 to move synchronously within the glue receiving hole 3018. The piston 3017 exerts pressure on the insulating glue within the glue receiving hole 3018, causing the insulating glue to flow along the glue channel 3016 to the glue injection groove 3014 on the side wall of the concave slot 3011.

[0038] No additional glue injection equipment is required. Glue injection can be triggered by the mating pressure between the sealing end cap 301 and the plastic-coated body 1, achieving an automated effect of "sealing upon installation," reducing manual operation steps and minimizing sealing defects caused by human error.

[0039] Good uniformity of adhesive filling: The linear movement of piston 3017 can generate stable pressure on insulating adhesive, so that insulating adhesive flows into the glue injection groove 3014 at a uniform speed along the adhesive channel 3016, ensuring that the insulating adhesive is uniformly filled in the gap between the plastic body 1 and the concave groove 3011, without dead corners or air bubbles, and the sealing effect is highly consistent.

[0040] After the sealing end cap 301 is snapped onto the outer side of the end of the plastic-coated body 1, the pressing seal 304 and the self-sealing adhesive injection component 303 press against each other, so that the pressing seal 304 presses and seals on the outer side of the corresponding copper busbar 2, and the self-sealing adhesive injection component 303 is sealed on the outer side of the corresponding copper busbar 2 by insulating adhesive. At the same time, the adhesive injection sealing mechanism is sealed on the outer side of the plastic-coated body 1 by insulating adhesive after being pressed.

[0041] The core objectives of this invention are to achieve stable insulation between copper busbars 2 and to seal and isolate copper busbars 2 from the external environment. The function is achieved through a two-step process of “one-time injection molding of plastic body 1 to fix copper busbars 2 and sealing component 3 for multi-dimensional sealing”.

[0042] First, a single injection molding process is used to wrap several groups of copper busbars 2, which are evenly spaced vertically, inside the plastic-coated body 1, thus initially achieving insulation and fixation between the copper busbars 2. Subsequently, sealing components 3 are installed at both ends of the plastic-coated body 1. Through the coordinated action of sealing end cap 301, pressing sealing component 304, glue injection self-sealing component 303, glue injection sealing mechanism and sealing cap 302, the double sealing of the outside of the copper busbar 2 and the sealing of the outside of the plastic-coated body 1 are completed respectively, and finally a stacked copper busbar structure with "reliable insulation, tight sealing and controllable cost" is formed.

[0043] The equal spacing between the first through slot 3013 and the second through slot 3021 perfectly matches the copper busbar 2, ensuring that the copper busbar 2 passes through the sealing assembly 3 without jamming or squeezing, thus avoiding a decrease in conductivity due to mechanical damage.

[0044] By compressing the sealant 304 and the self-sealing sealant 303, the copper busbar 2 can extend smoothly to achieve its conductive function without sacrificing sealing performance, thus achieving a perfect balance between "function and protection".

[0045] Specifically, when using it: The outer side of the copper busbar 2 is injection molded to form a plastic coating 1. Both ends of the copper busbar 2 extend out of the plastic coating 1, forming a whole of the copper busbar 2 and the plastic coating 1. Install sealing component 3 to complete the multi-dimensional seal: 1. Pre-assembly and initial positioning of sealing component 3: First, the compression seal 304 and the self-sealing adhesive injection component 303 are pre-assembled: several sets of insertion posts 3042 on the rubber frame 3041 of the compression seal 304 are inserted into the insertion holes 3034 on the rigid frame 3031 of the self-sealing adhesive injection component 303. At this time, the abutment block 3033 of the self-sealing adhesive injection component 303 and the slope surface 3043 of the compression seal 304 form a matching and fitting state, forming a "sealing unit".

[0046] The assembled "sealing unit" is inserted into the receiving groove 3012 in the recessed groove 3011 of the sealing end cover 301, ensuring that the copper busbar 2 can extend through the first through slot 3013 of the sealing end cover 301, thus completing the initial assembly of the sealing end cover 301 and the "sealing unit".

[0047] 2. Install the 302 sealing cap to ensure sealing stability and subsequent maintainability: Bolt 3022 is used to fix the cover 302 to the outer end of the sealing end cover 301. The second through slot 3021 on the cover 302 ensures that the copper busbar 2 can be smoothly extended through. At the same time, the rubber plug 3024 on the inner side of the cover 302 is embedded in the outer end of the glue receiving hole 3018 to achieve the sealing of the glue receiving hole 3018 and prevent the internal insulating glue from leaking or external impurities from entering.

[0048] The springs 3023 on the upper and lower inner sides of the cap 302 extend into the corresponding glue receiving holes 3018, generating continuous pre-pressure on the piston 3017. On the one hand, this ensures that the piston 3017 always maintains a certain pressure on the insulating glue in the glue receiving holes 3018, preventing gaps from forming in the glue due to temperature changes or vibrations. On the other hand, if a small amount of insulating glue is lost in the subsequent glue injection groove 3014, the elastic force of the spring 3023 can push the piston 3017 to replenish and squeeze the glue, maintaining the stability of the sealing effect.

[0049] Then the insulating glue injection head extends through the middle of the rubber stopper 3024 into the corresponding glue receiving hole 3018, and injects insulating glue into the glue receiving hole 3018.

[0050] 3. The sealing end cap 301 mates with the plastic-coated body 1, triggering the sealing of the outer side of the copper busbar 2: The sealing end cap 301, which has been preliminarily assembled with the "sealing unit", is fastened to the outer side of the end of the plastic-coated body 1 through the inner recessed groove 3011 on its inner side, so that the end of the plastic-coated body 1 is tightly fitted with the inner wall of the inner recessed groove 3011.

[0051] During this docking process, the plastic-coated body 1 exerts an inward compressive force on the sealing end cap 301. This compressive force is transmitted to the "sealing unit" within the receiving groove 3012, causing the pressing seal 304 and the self-sealing component 303 to press against each other. The abutment block 3033 gradually slides along the slope surface 3043, causing the abutment block 3033 to compress the rubber frame 3041; Due to the elastic properties of the rubber material, the rubber frame 3041 of the compression seal 304 deforms under the action of extrusion force. The rubber frame 3041 tightly wraps around the outside of the corresponding copper busbar 2, forming the first physical sealing barrier to prevent external dust and moisture from contacting the copper busbar 2.

[0052] At the same time, the insertion post 3042 is further inserted into the insertion hole 3034 until the inner end of the insertion post 3042 enters the annular arc groove 3035, squeezing and puncturing the injection capsule 3032 in the annular arc groove 3035. Under the pressure of the compression force, the rigid frame 3031 of the self-sealing component 303 causes the injection capsule 3032 in its annular arc groove 3035 to be squeezed and ruptured. The insulating adhesive in the injection capsule 3032 flows out and fills the gap between the copper busbar 2 and the rigid frame 3031 along the injection groove 3036. After the insulating adhesive cures, a second insulating sealing barrier is formed on the outside of the copper busbar 2, which further enhances the insulation performance of the copper busbar 2 and at the same time makes up for any small gaps that may exist in the compression sealing component 304.

[0053] 4. The glue injection sealing mechanism is activated under pressure, achieving a seal on the outer side of the plastic-coated body 1: As the sealing end cap 301 further connects with the plastic-coated body 1, the end of the plastic-coated body 1 presses against the abutment rod 3015 of the glue injection sealing mechanism, causing the abutment rod 3015 to move into the glue receiving hole 3018.

[0054] The abutment rod 3015 and the piston 3017 are integrally formed. The movement of the abutment rod 3015 drives the piston 3017 to move synchronously in the glue receiving hole 3018. The piston 3017 exerts pressure on the insulating glue in the glue receiving hole 3018, causing the insulating glue to flow along the glue channel 3016 to the glue injection groove 3014 on the side wall of the concave slot 3011.

[0055] The insulating adhesive fills the gap between the outer side of the plastic body 1 and the inner wall of the recessed groove 3011 in the glue injection groove 3014. After curing, it forms a third sealing barrier, realizing the seal between the plastic body 1 and the sealing end cap 301, and preventing external impurities from seeping into the interior of the structure from the connection between the two.

[0056] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A plastic-coated laminated copper busbar structure with a main body injection molded in one step, comprising several groups of copper busbars distributed at equal intervals, characterized in that: Several groups of copper busbars are fixed by being coated with a single injection-molded plastic body; The two ends of the plastic-coated body are fixed with sealing components, and the copper busbar extends through the sealing components; The sealing assembly includes a sealing end cap, a pressing seal and an adhesive self-sealing component disposed inside the sealing end cap, and a cap fixed at the end of the sealing end cap. The sealing end cap is also provided with an adhesive injection sealing mechanism inside. After the sealing end cap is snapped onto the outside of the end of the plastic-coated body, the pressing seal and the self-sealing adhesive injection component squeeze each other, so that the pressing seal is pressed and sealed on the outside of the corresponding copper busbar, and the self-sealing adhesive injection component is sealed on the outside of the corresponding copper busbar by insulating adhesive. At the same time, the adhesive injection sealing mechanism is sealed on the outside of the plastic-coated body by insulating adhesive after being compressed.

2. The plastic-coated laminated copper busbar structure with a main body injection molded in one step according to claim 1, characterized in that: The inner side of the sealing end cap is provided with a concave groove that is locked onto the outer side of the end of the plastic-coated body. The concave groove is provided with receiving grooves that are evenly spaced at the top and bottom. The middle of the receiving groove is provided with a first through slot for the copper busbar to extend through. The receiving groove is used to snap-fit ​​and press the sealant and the self-sealing component.

3. The plastic-coated laminated copper busbar structure with a main body injection molded in one step according to claim 1, characterized in that: The self-sealing component includes several sets of rigid frames distributed at equal intervals, an injection groove provided on the inner side of the rigid frame, and an injection capsule provided in the annular arc groove on the outer side of the injection groove. The rigid frame is provided with several sets of abutment blocks and several sets of insertion holes on the same side, and the insertion holes are connected to the annular arc groove.

4. The plastic-coated laminated copper busbar structure with a main body injection molded in one step according to claim 3, characterized in that: The compression sealing component includes several sets of rubber frames distributed at equal intervals. On the same side of the rubber frames, there are several sets of ramps and several sets of plugs. The plugs are inserted into the corresponding plug holes, and the abutment blocks match the corresponding ramps.

5. The plastic-coated laminated copper busbar structure with a main body injection molded in one step according to claim 2, characterized in that: The glue injection sealing mechanism includes several sets of glue receiving holes distributed vertically inside the sealing end cap, a piston installed inside the glue receiving hole, an abutment rod integrally formed in the middle of the piston, and a glue channel connected to the outer end of the glue receiving hole. The abutment rod extends through the glue receiving hole and into the concave groove. The side wall of the concave groove is provided with a glue injection groove that communicates with the inner end of the glue channel.

6. The plastic-coated laminated copper busbar structure with a main body injection molded in one step according to claim 5, characterized in that: The cap is fixed to the outer end of the sealing end cap with bolts, and the cap is used to seal the outer end of the glue receiving hole.

7. The plastic-coated laminated copper busbar structure with a main body injection molded in one step according to claim 5, characterized in that: The inner side of the cover is provided with several sets of equally spaced springs at the top and bottom. The inner ends of the springs extend into the corresponding glue receiving holes. The cover is also provided with rubber plugs, which are located at the outer ends of the corresponding glue receiving holes.

8. The plastic-coated laminated copper busbar structure with a main body injection molded in one step according to claim 1, characterized in that: The cover is provided with second through slots that are evenly spaced vertically, and the second through slots are used for the through extension of the corresponding copper busbar.

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