A production apparatus for rotational molding of battery packs for increasing flash thickness.

Abstract

This utility model discloses a battery pack rotational molding production device for thickening flash, including a first molding box, a second molding box, and a molding ring cover with open ends; the opening of the first molding box is sealed to one open side of the ring cover, and the opening of the second molding box is sealed to the other open side of the ring cover. The three together form a product molding structure with a sealed chamber inside. This utility model can generate flow resistance to the plastic material by setting the baffle column, so that the flash formed in the flash forming chamber has sufficient thickness. Specifically, once the molten plastic material enters the flash forming chamber, due to the presence of the baffle column, the molten plastic material will not be discharged quickly, but there is a flow rate difference between entering and exiting, which facilitates the retention of the molten plastic material, so that the subsequent flash thickness is sufficient.

Description

Technical Field

[0001] This utility model relates to the field of battery packaging technology, specifically to a battery pack rotational molding production device for thickening the flash. Background Technology

[0002] Rotational molding is a rotational forming technology that is particularly suitable for manufacturing hollow, irregularly shaped shells required for new energy battery packs, such as battery boxes and covers. It features seamless construction, ensuring structural integrity and aesthetics; strong sealing performance, effectively preventing dust and water damage, and improving battery protection performance; low mold costs, making development cost-effective; and suitability for small-batch customized production, facilitating rapid response to diverse needs and improving production flexibility.

[0003] Current battery packs must pass an IP67 sealing test (waterproof and dustproof) before use, and their edges must be able to withstand long-term compression without easily deforming. If the edge airtightness fails, it indicates that the edge rigidity is insufficient, and it cannot spring back after being compressed, thus forming a leakage channel.

[0004] In the current battery pack manufacturing process, the edge cavities are arranged horizontally (the production principle is as follows). Figure 1 When molten plastic material enters the horizontal cavity, the flow rate is often too fast, making it difficult for the material to achieve effective directional deposition in the edge cavities. This results in insufficient flash thickness and weak strength, leading to a lack of edge rigidity and a technical defect where the material cannot spring back after being squeezed.

[0005] Therefore, how to overcome the shortcomings of the existing technology mentioned above has become the subject of this utility model. Utility Model Content

[0006] This invention provides a battery pack rotational molding production apparatus for thickening flash, aiming to solve the technical problems mentioned in the background art.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a battery pack rotational molding production device for thickening flash, comprising a first molding box, a second molding box, and a molding ring cover with open ends; the opening of the first molding box is sealed to one open end of the ring cover, and the opening of the second molding box is sealed to the other open end of the ring cover, the three together forming a product molding structure with a sealed cavity inside; the edge of the opening of the first molding box and the edge of the opening of the second molding box each have a first edge ring, the surface of the two first edge rings facing the molding ring cover is parallel to the corresponding edge of the opening, and the surface of the two first edge rings facing the molding ring cover is concave to form a first semi-groove communicating with the sealed cavity; the two open edges of the molding ring cover Each component is equipped with a second side ring. The opposing surfaces of the two second side rings are respectively arranged parallel to the edges of the two open openings, and the opposing surfaces of the two second side rings are recessed to form a second half-groove communicating with the sealed chamber. When the first molding box, molding ring cover, and second molding box are connected in sequence, the first side ring and the second side ring are fitted together, and the first half-groove is directly opposite the second half-groove and combines with the second half-groove at the edge of the sealed chamber to form a flash forming chamber. It also includes multiple flow-blocking columns, which are fixedly arranged in the first half-groove and / or the second half-groove and distributed along the path of the flash forming chamber. The axis of the flow-blocking column is perpendicular to the bottom of the first half-groove and the second half-groove, and the height of the flow-blocking column is less than the height of the flash forming chamber, so as to generate flow resistance to the plastic material in the flash forming chamber.

[0008] The relevant content in the above plan is explained as follows:

[0009] In the above design, since the flash design surrounds the edge (ring-shaped) of the battery pack, the flash forming chamber must also be ring-shaped. Therefore, the first and second half-grooves must have the same ring-shaped profile. During precise assembly (with the top view projection coinciding), the contour edges of the two half-grooves will fit perfectly together, eliminating any gaps. The resulting flash forming chamber is sealed, and its shape is exactly the same as the ring-shaped profile of the half-grooves.

[0010] In the above scheme, the first molding box and the second molding box can be the same or different except for the first side ring, which is the same structure. Generally, the choice can be made according to the requirements during the specific design.

[0011] In the above scheme, the baffle column can be set in the first half-groove, the second half-groove, or both half-grooves. Generally, in order to improve production efficiency, the baffle column is mostly set in one half-groove. In this application, it is preferred to set it in the second half-groove. In this way, the first forming box and the second forming box are highly efficient during preparation, and there is no need to design a separate baffle column.

[0012] In the above scheme, the axis of the baffle column is perpendicular to the bottom of the first half-groove and the second half-groove. This is to reduce the pulling force exerted on the flash by the baffle column when the flash comes off the baffle column. If the baffle column is set at an angle, it is easy for the angled baffle column to pull the flash off.

[0013] In the above scheme, the height of the baffle column is less than the height of the flash forming chamber in order to prevent the flash from having a hole after it detaches from the baffle column.

[0014] In the above scheme, the flow resistance of the plastic material can be generated by setting the baffle column, so that the flash formed in the flash forming chamber has sufficient thickness. Specifically, the three are connected in the order of the first forming box, the forming ring cover and the second forming box. During the connection process, the material is directly fed in, and then the rotational molding operation can be carried out. In this process, once the molten plastic material enters the flash forming chamber, due to the presence of the baffle column, the molten plastic material will not be discharged quickly. Instead, there is a flow rate difference between entering and exiting, which facilitates the retention of the molten plastic material so that the subsequent flash thickness is sufficient.

[0015] Unlike existing technologies, this application can reduce the discharge speed of molten plastic material by using a baffle column. The low flow rate prevents the plastic material from being difficult to achieve effective directional deposition in the edge cavity.

[0016] A further technical solution involves providing the flow-blocking pillars on both of the second side rings; each flow-blocking pillar includes an exposed pillar and an inserted pillar that are coaxially arranged and integrally connected; the inserted pillar is located within the second half-groove, and the axis of the inserted pillar is perpendicular to the bottom surface of the second half-groove; the end face of the connection between the inserted pillar and the exposed pillar is coplanar with the bottom of the second half-groove; the height of the inserted pillar is less than the height of the flash forming chamber; and the peripheral surface of the inserted pillar serves as a resistance part that generates flow resistance to the plastic material; one end of the exposed pillar is integrally connected to the inserted pillar, and the other end passes through the bottom of the second half-groove and extends to the outside; the exposed pillar is fixedly and sealed to the second side ring.

[0017] Based on the above design, the flow-blocking column can achieve flow-blocking operation.

[0018] Specifically, the height of the insert column is less than the height of the flash forming chamber, so that it does not fill the entire vertical space of the flash forming chamber, thereby forming a flow channel for plastic material between the top of the insert column and the top wall of the flash forming chamber. When the flowing plastic material flows out towards the edge of the flash forming chamber, the peripheral surface (resistance part) of the insert column directly blocks and divides the flowing plastic material, forcing some of the plastic material to flow upward and into the peripheral flow channel, significantly slowing down the flow rate and time of the plastic material exiting the flash forming area. At the same time, the end face of the connection between the insert column and the exposed column is coplanar with the bottom of the groove, ensuring a seamless fit when the mold is closed, and preventing the melt from seeping into the bottom of the baffle column. The sealing connection between the exposed column and the second side ring further prevents melt leakage.

[0019] In a further technical solution, the height of the flash forming chamber is at least twice the height of the inserting column.

[0020] Based on the above design, the thickness of the flash can be guaranteed during its formation due to the presence of the inserting post. At the same time, after the flash leaves the flash forming chamber, there will be multiple grooves formed by the inserting post on the flash. The existence of these grooves is to facilitate subsequent punching operations (for example, during punching, quickly determine the punching position, reduce the punching difficulty, and prevent the flash from bending or cracking due to a large punching volume).

[0021] In a further technical solution, the structure of the second molding box is the same as that of the first molding box, and the second molding box and the first molding box are symmetrically arranged with reference to the line connecting the centers of the two sides in the height direction of the molding ring cover.

[0022] Based on the above design, the second molding box and the first molding box have high production efficiency, low maintenance and replacement difficulty, and can be operated in a modular manner.

[0023] A further technical solution, viewed from above, shows that the top-view projections of the outer contours of the first side ring and the second side ring overlap.

[0024] Based on the above design, when the first and second side rings are bonded together to produce the burr, there will be no gap at the edge after bonding due to one of the dimensions being too small, which would cause the plastic material to leak out. If one of the dimensions is too large, it will affect the aesthetics.

[0025] In a further technical solution, a plurality of limiting structures are provided between the mating surfaces of the first side ring and the second side ring; all the limiting structures are evenly distributed between the mating surfaces of the first side ring and the second side ring along the path of the flash forming chamber.

[0026] Based on the above design, the first side ring and the second side ring can be quickly positioned by the limiting structure when they are attached.

[0027] In a further technical solution, the limiting structure includes a protruding insertion strip and a recessed embedding groove, wherein the insertion strip and the embedding groove are matched; of the two, one is disposed on the surface of the first side ring and the other is disposed on the surface of the second side ring.

[0028] Based on the above design, when the first and second side rings are fitted together, the insertion strip can be directly inserted into the embedding groove to quickly fit the first and second side rings together without any offset or misalignment.

[0029] The terms "first," "second," etc., used in this article do not specifically refer to order or sequence, nor are they intended to limit this case; they are merely used to distinguish components or operations described using the same technical terms.

[0030] The terms "connection" or "positioning" as used in this article can refer to two or more components or devices making direct physical contact with each other, or making indirect physical contact with each other, or to two or more components or devices operating or moving with each other.

[0031] The terms “include,” “including,” and “have” used in this article are all open-ended, meaning they include but are not limited to.

[0032] Unless otherwise specified, the terms used herein generally have their ordinary meaning in the context of the art, the subject matter, and the specific context. Certain terms used to describe this case will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the case.

[0033] The terms “front,” “back,” “up,” “down,” “left,” and “right” used in this article are directional terms. In this case, they are only used to describe the positional relationship between the structures and are not intended to limit the specific direction of the protection scheme or its actual implementation.

[0034] The working principle and advantages of this utility model are as follows:

[0035] This invention creates flow resistance to the plastic material by setting up baffle columns, ensuring that the flash formed in the flash forming chamber has sufficient thickness. Specifically, the three are connected in the order of the first forming box, the forming ring cover, and the second forming box. During the connection process, the material is directly fed in, and then rotational molding can be performed. In this process, once the molten plastic material enters the flash forming chamber, due to the presence of the baffle columns, the molten plastic material will not be discharged quickly. Instead, there is a flow rate difference between entering and exiting, which facilitates the retention of the molten plastic material, so that the subsequent flash thickness is sufficient.

[0036] Unlike existing technologies, this application can reduce the discharge speed of molten plastic material by using a baffle column. The low flow rate prevents the plastic material from being difficult to achieve effective directional deposition in the edge cavity. Attached Figure Description

[0037] Appendix Figure 1 This is a schematic diagram illustrating the process of molten plastic material entering the flash forming chamber in existing technology.

[0038] Appendix Figure 2 This is a schematic diagram illustrating the process of molten plastic material entering the flash forming chamber in an embodiment of this utility model.

[0039] Appendix Figure 3 This is a schematic diagram of the structure when the first molding box, the molding ring cover, and the second molding box are connected in an embodiment of this utility model;

[0040] Appendix Figure 4 This is a perspective view of the first molding box, the molding ring cover, and the second molding box after they are connected in an embodiment of this utility model.

[0041] Appendix Figure 5 for Figure 4 Enlarged view of section A in the image;

[0042] Appendix Figure 6 This is a schematic diagram of the molded ring cover structure in an embodiment of the present utility model;

[0043] Appendix Figure 7 This is a cross-sectional view of the molded ring cover in an embodiment of the present utility model;

[0044] Appendix Figure 8 for Figure 7 A magnified view of section B in the image.

[0045] In the above attached figures: 1. First molding box; 2. Second molding box; 3. Molding ring cover; 4. First side ring; 5. First half groove; 6. Second side ring; 7. Second half groove; 8. Baffle post; 9. Exposed post; 10. Insert post; 11. Insert strip; 12. Embedded groove; 13. Flash molding chamber. Detailed Implementation

[0046] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0047] Example: The present invention will be clearly described below with illustrations and detailed description. Any person skilled in the art who understands the examples of the present invention can make changes and modifications based on the technology taught in the present invention without departing from the spirit and scope of the present invention.

[0048] The terminology used herein is for the purpose of describing specific embodiments only and is not intended to limit the scope of this work. Singular forms such as “a,” “this,” “this,” “the,” and “the” as used herein also include plural forms.

[0049] See appendix Figures 1-8 As shown, a rotational molding production apparatus for battery packs with thickened flash includes a first molding box 1, a second molding box 2, and a molding ring cover 3 with open ends. The opening of the first molding box 1 is sealed to one open end of the ring cover, and the opening of the second molding box 2 is sealed to the other open end of the ring cover. The three together form a product molding structure with a sealed chamber inside. The edge of the opening of the first molding box 1 and the edge of the opening of the second molding box 2 each have a first edge ring 4. The surfaces of the two first edge rings 4 facing the molding ring cover 3 are parallel to the corresponding opening edges, and the surfaces of the two first edge rings 4 facing the molding ring cover 3 are concave to form a first semi-groove 5 communicating with the sealed chamber. The two open edges of the molding ring cover 3 are each provided with a second edge ring 6. Each of the opposite surfaces of the ring 6 is arranged parallel to the edges of the two open openings, and each of the opposite surfaces of the two second side rings 6 is recessed with a second half-groove 7 communicating with the sealed chamber. When the first molding box 1, the molding ring cover 3, and the second molding box 2 are connected in sequence, the first side ring 4 fits into the second side ring 6, the first half-groove 5 is directly opposite the second half-groove 7 and combines with the second half-groove 7 at the edge of the sealed chamber to form a flash forming chamber 13. It also includes a plurality of flow-blocking columns 8, which are fixedly arranged in the first half-groove 5 and / or the second half-groove 7 and distributed along the path of the flash forming chamber 13. The axis of the flow-blocking column 8 is perpendicular to the bottom of the first half-groove 5 and the second half-groove 7, and the height of the flow-blocking column 8 is less than the height of the flash forming chamber 13, so as to generate flow resistance to the plastic material in the flash forming chamber 13.

[0050] In this embodiment, since the flash design surrounds the edge (ring-shaped) of the battery pack, the flash forming chamber 13 must also be ring-shaped. Therefore, the first half-groove 5 and the second half-groove 7 must have the same ring-shaped profile. During precise assembly (top view projection coincides), the contour edges of the two half-grooves will fit perfectly, eliminating any gaps. The resulting flash forming chamber 13 is sealed, and its shape is exactly the same as the ring-shaped profile of the half-groove.

[0051] In this embodiment, the first molding box 1 and the second molding box 2 may be the same or different except for the first side ring 4, which is the same structure. Generally, they can be selected according to the requirements in the specific design.

[0052] In this embodiment, the baffle column 8 can be set in the first half-groove 5, the second half-groove 7, or both half-grooves. Generally, in order to improve production efficiency, the baffle column 8 is mostly set in one half-groove. In this application, it is preferred to set it in the second half-groove 7. In this way, the first forming box 1 and the second forming box 2 are highly efficient during preparation, and there is no need to design the baffle column 8 separately.

[0053] In this embodiment, the axis of the baffle column 8 is perpendicular to the bottom of the first half-groove 5 and the second half-groove 7. This is to reduce the pulling force exerted by the baffle column 8 on the flash when it detaches from the baffle column 8. If the baffle column 8 is set at an angle, it is easy for the angled baffle column 8 to pull the flash apart.

[0054] In this embodiment, the height of the baffle post 8 is less than the height of the flash forming chamber 13 in order to prevent the flash from having a hole after it detaches from the baffle post 8.

[0055] In this invention, the flow resistance of the plastic material can be generated by the baffle column 8, so that the flash formed in the flash forming chamber 13 has sufficient thickness. Specifically, the three are connected in the order of the first forming box 1, the forming ring cover 3 and the second forming box 2. During the connection process, the material is directly fed in, and then the rotational molding operation can be performed. In this process, once the molten plastic material enters the flash forming chamber 13, due to the presence of the baffle column 8, the molten plastic material will not be discharged quickly, but there is a flow rate difference between entering and exiting, which facilitates the retention of the molten plastic material so that the subsequent flash thickness is sufficient.

[0056] Unlike existing technologies, this application can reduce the discharge speed of molten plastic material by using the baffle column 8. The low flow rate prevents the plastic material from being difficult to achieve effective directional deposition in the edge cavity.

[0057] Preferably, the flow-blocking column 8 is provided on both of the second side rings 6; the flow-blocking column 8 includes an exposed column 9 and an inserted column 10 that are coaxially arranged and integrally connected; the inserted column 10 is located in the second half-groove 7, and the axis of the inserted column 10 is perpendicular to the bottom surface of the second half-groove 7; the end face of the connection between the inserted column 10 and the exposed column 9 is coplanar with the bottom surface of the second half-groove 7; the height of the inserted column 10 is less than the height of the flash forming chamber 13; the peripheral surface of the inserted column 10 serves as a resistance part that generates flow resistance to the plastic material; one end of the exposed column 9 is integrally connected to the inserted column 10, and the other end passes through the bottom of the second half-groove 7 and extends to the outside; the exposed column 9 is fixed and sealed to the second side ring 6.

[0058] Based on the above design, the flow-blocking column 8 can perform flow-blocking operation.

[0059] Specifically, the height of the penetrating column 10 is less than the height of the flash forming chamber 13, so that it does not fill the entire vertical space of the flash forming chamber 13, thereby forming a flow channel for plastic material between the top of the penetrating column 10 and the top wall of the flash forming chamber 13. When the flowing plastic material flows out towards the edge of the flash forming chamber 13, the peripheral surface (resistance part) of the penetrating column 10 directly blocks and divides the flowing plastic material, forcing some of the plastic material to flow upward and into the peripheral flow channel, significantly slowing down the flow rate and time of the plastic material exiting the flash forming area. At the same time, the end face of the connection between the penetrating column 10 and the exposed column 9 is coplanar with the bottom of the groove, ensuring seamless fitting when the mold is closed, and preventing the melt from seeping into the bottom of the baffle column 8. The sealing connection between the exposed column 9 and the second side ring 6 further prevents the melt from leaking out.

[0060] Preferably, the height of the flash forming chamber 13 is at least twice the height of the insert post 10.

[0061] Based on the above design, the thickness of the flash can be guaranteed during the formation due to the presence of the insert post 10. At the same time, after the flash leaves the flash forming chamber 13, there will be multiple grooves formed by the insert post 10 on the flash. The existence of these grooves is to facilitate subsequent punching operations (for example, during punching, quickly determine the punching position, reduce the punching difficulty, and prevent the flash from bending or cracking due to a large punching volume).

[0062] Preferably, the structure of the second molding box 2 is the same as that of the first molding box 1, and the second molding box 2 and the first molding box 1 are symmetrically arranged with reference to the line connecting the centers of the two sides of the molding ring cover 3 in the height direction.

[0063] Based on the above design, the second molding box 2 and the first molding box 1 have high production efficiency, low maintenance and replacement difficulty, and can be operated in a modular manner.

[0064] Preferably, when viewed from a top-down angle, the top-down projections of the outer contours of the first side ring 4 and the second side ring 6 coincide.

[0065] Based on the above design, when the first side ring 4 and the second side ring 6 are bonded together to produce the burr, there will be no gap at the edge after bonding due to the small size of one of them, which would cause the plastic material to leak out. If the size of one of them is too large, it will affect the aesthetics.

[0066] Preferably, a plurality of limiting structures are provided between the mating surfaces of the first edge ring 4 and the second edge ring 6; all the limiting structures are evenly distributed between the mating surfaces of the first edge ring 4 and the second edge ring 6 along the path of the flash forming chamber 13.

[0067] Based on the above design, the first side ring 4 and the second side ring 6 can be quickly positioned by the limiting structure when they are attached.

[0068] Preferably, the limiting structure includes a protruding insertion strip 11 and a recessed embedding groove 12, wherein the insertion strip 11 and the embedding groove 12 are matched; one of the insertion strip 11 and the embedding groove 12 is disposed on the surface of the first side ring 4 and the other is disposed on the surface of the second side ring 6.

[0069] Based on the above design, when the first side ring 4 and the second side ring 6 are fitted together, the insertion strip 11 can be directly inserted into the embedding groove 12, so that the first side ring 4 and the second side ring 6 can be quickly fitted together without any offset or misalignment.

[0070] One embodiment of the insert strip 11 and the embedding groove 12 can be referred to Figure 8 .

[0071] Working principle: The first molding box 1, the molding ring cover 3, and the second molding box 2 are connected in sequence. During the connection process, the material is directly fed in, and then the rotational molding operation can be carried out. In this process, once the molten plastic material enters the flash forming chamber 13, due to the presence of the baffle column 8, the molten plastic material will not be discharged quickly. Instead, there is a flow velocity difference between entering and exiting, which facilitates the retention of the molten plastic material so that the subsequent flash thickness is sufficient. That is, when the flowing plastic material flows out towards the edge of the flash forming chamber 13, the peripheral surface (resistance part) of the penetrating column 10 directly blocks and divides the flowing plastic material, forcing some of the plastic material to flow upward and around the peripheral flow channel, significantly slowing down the flow velocity and time of the plastic material exiting the flash forming area.

[0072] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A production apparatus for rotational molding of battery packs for thickening flash, characterized in that: It includes a first molding box (1), a second molding box (2), and a molding ring cover (3) with both ends open; The opening of the first molding box (1) is sealed to one side of the open opening of the annular cover, and the opening of the second molding box (2) is sealed to the other side of the open opening of the annular cover. The three together form a product molding structure with a sealed chamber inside. The first molding box (1) and the second molding box (2) each have a first side ring (4) at the edge of the box opening. The two first side rings (4) are parallel to the corresponding box opening edges on the side facing the molding ring cover (3), and the two first side rings (4) are recessed on the side facing the molding ring cover (3) to form a first half groove (5) that communicates with the sealed chamber. The two open edges of the molded ring cover (3) are provided with second side rings (6). The opposite side surfaces of the two second side rings (6) are respectively arranged parallel to the two open edges, and the opposite side surfaces of the two second side rings (6) are respectively provided with a second half groove (7) that communicates with the sealed chamber. When the first molding box (1), the molding ring cover (3) and the second molding box (2) are connected in sequence, the first side ring (4) fits into the second side ring (6), the first half groove (5) faces the second half groove (7) and combines with the second half groove (7) at the edge of the sealed chamber to form a flange molding chamber (13). It also includes multiple flow-blocking columns (8), which are fixedly installed in the first half-groove (5) and / or the second half-groove (7) and distributed along the path of the flash forming chamber (13). The axis of the flow-blocking column (8) is perpendicular to the bottom of the first half-groove (5) and the second half-groove (7), and the height of the flow-blocking column (8) is less than the height of the flash forming chamber (13) so as to generate flow resistance to the plastic material in the flash forming chamber (13).

2. The apparatus for the production of battery pack roto-molding with flash thickening according to claim 1, characterized in that: The flow-blocking column (8) is provided on both of the second side rings (6); The baffle column (8) includes an exposed column (9) and an inserted column (10) that are coaxially arranged and integrally connected. The insertion post (10) is located in the second half-groove (7), and the axis of the insertion post (10) is perpendicular to the bottom surface of the second half-groove (7). The end face of the connection between the insertion post (10) and the exposed post (9) is coplanar with the bottom surface of the second half-groove (7). The height of the insertion post (10) is less than the height of the flash forming chamber (13). The peripheral surface of the insertion post (10) serves as a resistance part that generates flow resistance to the plastic material. One end of the exposed column (9) is integrally connected to the inserted column (10), and the other end passes through the bottom of the second half groove (7) and extends to the outside. The exposed column (9) is fixed and sealed to the second side ring (6).

3. The apparatus for the production of battery pack roto-molding with flash thickening according to claim 2, characterized in that: The height of the flash forming chamber (13) is at least twice the height of the insertion post (10).

4. The apparatus for the production of roto-molding of battery packs with flash thickening according to claim 1, characterized in that: The structure of the second molding box (2) is the same as that of the first molding box (1), and the second molding box (2) and the first molding box (1) are symmetrically arranged with the center line of the two sides in the height direction of the molding ring cover (3) as the reference.

5. The apparatus for the production of roto-molding of battery packs with flash thickening according to claim 1, characterized in that: Viewed from above, the top-view projections of the outer contours of the first side ring (4) and the second side ring (6) overlap.

6. The apparatus for producing a battery pack with thickened flash by roto-molding according to claim 1 or 5, wherein: Multiple limiting structures are provided between the mating surfaces of the first side ring (4) and the second side ring (6); All of the aforementioned limiting structures are evenly distributed along the path of the flash forming chamber (13) between the mating surfaces of the first side ring (4) and the second side ring (6).

7. The apparatus for the production of battery pack roto-molding with flash thickening according to claim 6, characterized in that: The limiting structure includes a protruding insertion strip (11) and a recessed embedding groove (12), the insertion strip (11) and the embedding groove (12) being matched; Of the two components, the insertion strip (11) and the embedding groove (12), one is disposed on the surface of the first side ring (4) and the other is disposed on the surface of the second side ring (6).

Images