A battery cell structure, manufacturing process, and battery system

Abstract

The application relates to the technical field, in particular to a battery tank structure, a manufacturing process and a battery system. The battery tank structure comprises a tank body, a tank cover and a pressing frame. The top end of the tank body is provided with an opening, the tank cover covers the opening of the tank body, one side of the pressing frame is fixedly connected with the tank body, the other side of the pressing frame is pressed on the tank cover, and the pressing frame is arranged along the opening of the tank body. One side of the pressing frame is fixedly connected with the tank body, the other side of the pressing frame is pressed on the tank cover, and a ring-shaped reinforcing structure is formed around the joint part of the tank body and the tank cover, so that the relative displacement of the tank body and the tank cover can be effectively constrained, stress concentration can be dispersed, and the overall structural strength and the explosion-proof performance of the battery tank structure can be significantly improved. The pressing frame is an independent prefabricated component, and quality detection and performance optimization can be carried out independently, so that the local defect problem caused by uneven resin flow and poor infiltration in the traditional integrated forming process is avoided.

Description

Technical Field

[0001] This invention relates to the field of special technology, and in particular to a battery case structure, manufacturing process and battery system. Background Technology

[0002] Currently, the sealing connection methods between the tank body and the tank cover in battery cell structures used in special power batteries and energy storage batteries mainly fall into two categories. One type uses asphalt or pure resin sealant for sealing. This method is simple to operate but has low strength and poor impact resistance. Vibration, impact, or sudden increases in internal pressure can easily lead to cracking of the sealing area and electrolyte leakage, posing safety hazards. The other type uses resin transfer molding to integrally mold the tank body and tank cover. While this method offers good integrity, it suffers from high mold costs, long molding cycles, uneven resin impregnation leading to defects, and limited local reinforcement effects. Furthermore, it requires extensive post-processing after molding, resulting in low production efficiency. To address these issues, existing technologies lack a battery cell structure that can guarantee high-strength sealing performance while also considering process flexibility, production efficiency, and cost control. Summary of the Invention

[0003] (i) The problem to be solved by the present invention is that there is a lack of a battery case structure that can ensure high-strength sealing performance while taking into account process flexibility, production efficiency and cost control.

[0004] (II) Technical Solution To solve the above-mentioned technical problems, the present invention provides a battery slot structure, including: a slot body, a slot cover, and a pressing frame; The top of the tank is open, and the tank cover is closed over the open part of the tank. One side of the pressing frame is fixedly connected to the groove body, and the other side is pressed onto the groove cover. The pressing frame is arranged circumferentially along the opening of the groove body.

[0005] Optionally, the pressing frame includes a first body and a second body, wherein the first body and the second body are arranged perpendicularly to each other; The first main body is bonded to the groove, and the second main body is bonded and pressed onto the groove cover.

[0006] Optionally, the groove is provided with a first recessed structure or a first protruding structure that cooperates and connects with the first main body.

[0007] Optionally, the groove cover is provided with a second recessed structure or a second protruding structure that cooperates and connects with the second main body.

[0008] Optionally, a plurality of first pin holes are provided on the side of the groove, and the first main body is provided with second pin holes that correspond one-to-one with the first pin holes. The first pin holes and the corresponding second pin holes are connected by a connector.

[0009] Optionally, each side of the groove is provided with the first pin hole.

[0010] Optionally, the groove cover has a cover body and a connecting wall located on the lower surface of the cover body, the connecting wall being located within the groove body; The connecting wall has a third pin hole that corresponds one-to-one with the first pin hole, and the corresponding first pin hole, second pin hole and third pin hole are connected by the connector.

[0011] In another aspect, the present invention provides a manufacturing process for manufacturing the above-described battery compartment structure; The manufacturing process includes: Prepare the tank body, tank cover, and pressing frame; Surface treatment is performed on the surfaces where the pressing frame is bonded to the tank body and the tank cover; Surface treatment is performed on the parts where the tank body and tank cover are bonded to the pressing frame; Apply adhesive to the surfaces where the pressing frame is bonded to the tank body and the tank cover, and apply adhesive to the parts where the tank body and the tank cover are bonded to the pressing frame. The battery compartment structure is obtained by connecting the cover to the compartment body and the pressing frame to the compartment body and the cover. Curing the adhesive; Perform visual inspection on the battery compartment structure.

[0012] Optionally, the adhesive, after curing, has a shear strength greater than 10 MPa and a peel strength greater than or equal to 8 kN / m.

[0013] A third aspect of the present invention also provides a battery system including the battery slot structure described above.

[0014] The beneficial effects of this invention are: The present invention provides a battery slot structure, comprising: a slot body, a slot cover, and a pressing frame; the top of the slot body is open, and the slot cover is fitted onto the open portion of the slot body; one side of the pressing frame is fixedly connected to the slot body, and the other side is pressed onto the slot cover, and the pressing frame is arranged circumferentially along the open portion of the slot body.

[0015] By setting up a pressing frame continuously arranged circumferentially along the opening of the tank, with one side of the pressing frame fixedly connected to the tank body and the other side pressed onto the tank cover, a circumferential reinforcing structure is formed around the joint between the tank body and the tank cover. This effectively constrains the relative displacement between the tank body and the tank cover, disperses stress concentration, and significantly improves the overall structural strength and explosion-proof performance of the battery tank structure. As an independent prefabricated component, the pressing frame can be individually inspected and its performance optimized, avoiding local defects caused by uneven resin flow and poor wetting in traditional one-piece molding processes. In addition, the structural form of the pressing frame being fixedly connected to the tank body and pressed onto the tank cover provides mechanical protection and continuous compression of the sealing interface, avoiding sealing failure caused by aging or local peeling of the adhesive layer in traditional sealing methods, resulting in better long-term reliability. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 An exploded view of the battery compartment structure provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the compression frame structure; Figure 3 This is a schematic diagram of the structure of the tank body, tank cover and pressing frame.

[0018] Icons: 100 - groove; 110 - first pin hole; 200 - Groove cover; 210 - Third pin hole; 300 - Press-fit frame; 310 - First body; 320 - Second body; 330 - Second pin hole; 400-Connector. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0024] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0025] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0026] One embodiment of the present invention provides a battery slot structure. For example... Figures 1 to 3As shown, the battery compartment structure includes a compartment body 100, a compartment cover 200, and a pressing frame 300. The top of the compartment body 100 is open, and the compartment cover 200 is fitted over the open portion of the compartment body 100. One side of the pressing frame 300 is fixedly connected to the compartment body 100, and the other side is pressed onto the compartment cover 200. The pressing frame 300 is arranged circumferentially along the open portion of the compartment body 100.

[0027] The top of the tank 100 is open, forming an internal cavity for accommodating the battery cells. The tank cover 200 connects to the top opening of the tank 100 and is used to open or close the opening. The tank 100 is integrally molded using a resin transfer molding process. During manufacturing, the mold is first cleaned and a release agent is sprayed. Dried reinforcing fibers are then wound onto the mold, which is then closed and vacuumed. Resin is injected, cured, and the mold is released, resulting in a rectangular tank structure with an open top. The tank 100 includes an integrally molded bottom plate and side walls. The tank cover 200 is molded using sheet molding compound. During manufacturing, cut SMC sheets are placed in a mold at 150°C to 160°C. The mold is closed, pressure is applied, and the material is cured for 60 minutes. The mold is then opened and the edges are trimmed to obtain a cover structure that matches the opening size of the tank 100. The tank cover 200 has holes for terminals and other interfaces. One side of the pressing frame 300 is fixedly connected to the upper edge of the tank 100, while the other side is pressed onto the tank cover 200. The pressing frame 300 is an independently prefabricated fiber-reinforced resin-based composite material component. The pressing frame 300 is formed by molding continuous glass fiber fabric or unidirectional fabric with resin prepreg through a molding process. Specifically, the prepreg is laid into a blank and placed in a mold at 120°C to 180°C. After being pressed and cured, it is demolded and trimmed to obtain a closed-loop structure that is continuously arranged along the circumference of the open opening of the tank 100.

[0028] By setting up a pressing frame 300 continuously arranged circumferentially along the opening of the tank 100, with one side of the pressing frame 300 fixedly connected to the tank 100 and the other side pressed onto the tank cover 200, a circumferential reinforcing structure is formed around the joint between the tank 100 and the tank cover 200. This effectively constrains the relative displacement between the tank 100 and the tank cover 200, disperses stress concentration, and significantly improves the overall structural strength and explosion-proof performance of the battery tank structure. As an independent prefabricated component, the pressing frame 300 can be individually inspected and its performance optimized, avoiding local defects caused by uneven resin flow and poor wetting in traditional one-piece molding processes. Furthermore, the structure of the pressing frame 300 fixedly connected to the tank 100 and pressed onto the tank cover 200 provides mechanical protection and continuous compression of the sealing interface, avoiding sealing failures caused by aging or local peeling of the adhesive layer in traditional sealing methods, resulting in superior long-term reliability. Moreover, this embodiment allows the tank 100, the tank cover 200 and the pressing frame 300 to be manufactured using different materials or different processes, achieving the design goals of local reinforcement and overall lightweighting, and effectively controlling manufacturing costs while meeting high strength requirements.

[0029] In optional embodiments of the present invention, such as Figures 1 to 3 As shown, the pressing frame 300 includes a first body 310 and a second body 320, with the first body 310 and the second body 320 arranged perpendicularly; the first body 310 is bonded to the groove 100, and the second body 320 is bonded and pressed onto the groove cover 200.

[0030] Both the first main body 310 and the second main body 320 are sheet-like frame structures, and the cross-section of the pressing frame 300 is "U". The first main body 310 is a side wall portion extending in the vertical direction, and is used to form an adhesive fit with the outer side wall of the tank 100. The second main body 320 is a top wall portion extending in the horizontal direction, and is used to form an adhesive pressing fit with the upper edge surface of the tank cover 200. The pressing frame 300 can be formed by molding continuous glass fiber fabric or unidirectional fabric with resin prepreg through a molding process. Through a layup design, the fibers are continuously distributed along the circumference of the frame, and multi-layer overlapping or three-dimensional woven preforms are used at the corners. The function of this layup design is to ensure high tensile strength of the frame in the circumferential direction, while strengthening the load-bearing capacity of the stress concentration area at the corners. The fiber volume content is controlled to be above 50%. The thickness of the frame can be adjusted according to the size and load-bearing requirements of the battery compartment structure. For example, for special power batteries for ships, the frame thickness can be designed to be 3mm to 5mm, and for small energy storage batteries, the frame thickness can be designed to be 1.5mm to 2.5mm.

[0031] The pressing frame 300 can simultaneously cover the outer wall of the tank 100 and the upper surface of the tank cover 200, forming a covering structure for the sealing part, which can maintain a tight fit between the tank 100 and the tank cover 200 under extreme impact or long-term vibration conditions.

[0032] In optional embodiments of the present invention, such as Figures 1 to 3 As shown, the groove 100 is provided with a first recessed structure or a first protruding structure that is connected to the first main body 310.

[0033] The upper edge of the groove 100 is provided with a first recessed structure or a first protruding structure that mates with and connects to the first main body 310 of the pressing frame 300. When the first recessed structure is used, a groove-shaped bonding area surrounding the opening of the groove 100 can be formed on the upper edge of the groove 100, thereby providing an embedding space for the first main body 310. When the first protruding structure is used, a flange-shaped structure surrounding the opening of the groove 100 can be provided on the upper edge of the groove 100. By providing the first recessed structure or the first protruding structure that mates with and connects to the first main body 310 on the upper edge of the groove 100, a mechanical interlocking positioning is formed when the pressing frame 300 and the groove 100 are bonded, which significantly improves the shear resistance and peel resistance of the bonding interface.

[0034] In optional embodiments of the present invention, such as Figures 1 to 3 As shown, the groove cover 200 is provided with a second recessed structure or a second protruding structure that is connected to the second body 320.

[0035] When a second recessed structure is used, an inverted stepped bonding area or groove can be formed on the groove cover 200 around its circumference to create a mechanical fitting and positioning. When a second protruding structure is used, a flange-like structure can be provided on the groove cover 200 around its circumference. By providing a second recessed structure or a second protruding structure on the groove cover 200 that mates with the second body 320, the pressing effect of the pressing frame 300 on the groove cover 200 is effectively enhanced.

[0036] In optional embodiments of the present invention, such as Figures 1 to 3 As shown, a plurality of first pin holes 110 are provided on the side of the groove 100, and the first main body 310 is provided with second pin holes 330 corresponding to the first pin holes 110. The first pin holes 110 and the corresponding second pin holes 330 are connected by a connector 400.

[0037] The connector 400 is a cylindrical fixing pin made of acid-resistant metal or high-strength composite material. The first pin hole 110 can be pre-embedded during the molding or resin transfer molding of the tank body 100, or it can be precisely drilled after molding. During assembly, the pressing frame 300 is first positioned and installed at the joint between the tank body 100 and the tank cover 200, aligning the first pin hole 110 with the second pin hole 330. Then, the fixing pin is coated with sealant and pressed into the pin hole. The number of fixing pins can be determined according to the size and load-bearing requirements of the battery tank structure. By setting the first pin hole 110, the second pin hole 330, and the connector 400 passing through the first pin hole 110 and the second pin hole 330, an auxiliary load-bearing structure is added outside the adhesive layer, forming a composite connection method that combines adhesive and mechanical connection. This effectively prevents adhesive failure due to fatigue or aging of the adhesive layer and provides structural redundancy and safety.

[0038] Preferably, each side of the groove 100 is provided with a first pin hole 110, so that the pressing frame 300 can obtain more uniform positioning and clamping force during the assembly process, thereby further improving the consistency of bonding quality.

[0039] In an optional embodiment of the present invention, the groove cover 200 has a cover body and a connecting wall located on the lower surface of the cover body, the connecting wall being located inside the groove body 100; the connecting wall is provided with a third pin hole 210 corresponding to the first pin hole 110, and the corresponding first pin hole 110, second pin hole 330 and third pin hole 210 are connected by a connector 400.

[0040] During assembly, the first pin hole 110 on the groove body 100, the second pin hole 330 on the first main body 310 of the pressing frame 300, and the third pin hole 210 on the connecting wall of the groove cover 200 are aligned. The connector 400 passes through the first pin hole 110, the second pin hole 330, and the third pin hole 210 simultaneously, fixing the groove body 100, the pressing frame 300, and the groove cover 200 together. During manufacturing, the third pin hole 210 can be pre-embedded during the molding of the groove cover 200, or it can be precisely drilled after molding. By setting the third pin hole 210 corresponding to the first pin hole 110 and the second pin hole 330, the connector 400 can be simultaneously inserted between the groove body 100, the pressing frame 300, and the groove cover 200, forming a mechanical connection structure that runs through the three, thereby further improving the anti-peeling ability of the sealing interface.

[0041] The present invention also provides a manufacturing process for manufacturing the battery slot structure in any of the above embodiments.

[0042] The manufacturing process includes: Prepare the tank body 100, the tank cover 200, and the pressing frame 300; Surface treatment is performed on the surfaces where the pressing frame 300 is bonded to the groove body 100 and the groove cover 200; Surface treatment is performed on the parts where the tank body 100 and the tank cover 200 are bonded to the pressing frame 300; Apply adhesive to the surfaces where the pressing frame 300 is bonded to the tank body 100 and the tank cover 200, and apply adhesive to the parts where the tank body 100 and the tank cover 200 are bonded to the pressing frame 300. Connect the cover 200 to the tank body 100, and connect the pressing frame 300 to the tank body 100 and the cover 200 to obtain the battery tank structure; Curing the adhesive; Perform visual inspection on the battery compartment structure.

[0043] In this embodiment, the tank body 100 is integrally molded using a resin transfer molding process. Specifically, the mold is first cleaned and a release agent is sprayed on it. Dried reinforcing fibers are then wound around the mold, which is then closed and vacuumed. Resin is injected, cured, and the mold is then demolded. Grinding, repair, and polishing are then performed. The tank cover 200 is molded using sheet molding compound. The cut SMC sheet is placed in a mold at 150°C to 160°C, closed, and pressurized for 60 minutes before being opened and trimmed. The pressing frame 300 is formed using a continuous glass fiber fabric or unidirectional fabric through a resin prepreg molding process. The cut prepreg is laid into a blank and placed in a mold at 120°C to 180°C. After pressurization and curing, the frame is demolded and trimmed. Subsequently, the surfaces where the pressing frame 300 is bonded to the tank 100 and the tank cover 200 are surface treated, and the parts where the tank 100 and the tank cover 200 are bonded to the pressing frame 300 are also surface treated. Specifically, the bonding surfaces are mechanically ground to a uniform roughness to form a micro-roughened surface, followed by degreasing and cleaning and drying, thereby improving the adhesion between the adhesive and the substrate. Next, an adhesive is applied to the surfaces where the pressing frame 300 is bonded to the tank body 100 and the tank cover 200, and an adhesive is also applied to the parts where the tank body 100 and the tank cover 200 are bonded to the pressing frame 300. The adhesive is a high-performance two-component modified epoxy structural adhesive, the formulation of which is 60 parts of bisphenol A type epoxy acrylate, 3 parts of coupling agent, 18 parts of reactive diluent, 5 parts of photoinitiator, 2 parts of fumed silica, 0.3 parts of defoamer, 0.4 parts of leveling agent, 0.05 parts of polymerization inhibitor, and 1 part of plasticizer. Subsequently, the pressing frame 300 is positioned and fixed to the tank body 100 and the tank cover 200. First, the tank cover 200 is placed over the opening of the tank body 100. Then, the pressing frame 300 is placed at the composite part of the tank body 100 and the tank cover 200, ensuring that the bonding area of ​​the first main body 310 corresponds to that of the tank body 100, and the bonding area of ​​the second main body 320 corresponds to that of the tank cover 200. A uniform pressure of 0.1 MPa to 0.3 MPa is then applied using a special tooling, and further fixation can be achieved using fixing pins. Next, the adhesive is cured under ultraviolet light with an intensity of 80 mW / cm² to 150 mW / cm² for 0.5 to 1 hour, allowing the adhesive layer to fully cross-link and reach the designed strength. Finally, the battery tank structure is visually inspected. After removing the tooling, residual adhesive is cleaned, and the finished product undergoes airtightness testing, dimensional accuracy testing, appearance quality testing, and ultrasonic non-destructive testing to ensure there are no large-area delamination or missing adhesive defects.

[0044] The modular prefabrication process allows each component to be manufactured independently under its optimized process parameters, avoiding the process compromises caused by the mutual constraints of resin flow and fiber distribution in traditional resin transfer molding. The surface treatment step, through mechanical grinding of the bonding surfaces to create a microscopic roughened structure, provides a good adhesion base for the adhesive, significantly improving bond strength. This process overcomes the problems of long cycle times, complex molds, limited local reinforcement effects, and susceptibility to resin wetting defects in traditional resin transfer molding, achieving an optimal balance between performance, efficiency, and cost.

[0045] Preferably, in this embodiment, the shear strength of the cured adhesive is greater than 10 MPa, and the peel strength is greater than or equal to 8 kN / m.

[0046] Furthermore, in terms of environmental resistance, the adhesive is resistant to electrolyte corrosion and can withstand long-term erosion from the electrolyte environment inside the battery without performance degradation. Moreover, its performance degradation is less than 5% after high and low temperature cycling from -40℃ to 120℃.

[0047] The present invention also provides a battery system including the aforementioned battery compartment structure. This battery system can be a special power battery system, applied in fields such as ships and special vehicles where battery safety and reliability requirements are high; it can also be a power battery pack, applied in new energy vehicles such as electric vehicles and hybrid vehicles; or it can be an energy storage battery system, applied in fields such as grid energy storage, industrial and commercial energy storage, and home energy storage.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A battery slot structure, characterized in that, include: The tank body (100), the tank cover (200), and the pressing frame (300); The top of the trough (100) is open, and the trough cover (200) covers the open part of the trough (100); The pressing frame (300) is fixedly connected to the groove (100) on one side and pressed onto the groove cover (200) on the other side, and the pressing frame (300) is arranged circumferentially along the opening of the groove (100).

2. The battery compartment structure according to claim 1, characterized in that, The pressing frame (300) includes a first body (310) and a second body (320), wherein the first body (310) and the second body (320) are arranged perpendicularly to each other; The first body (310) is bonded to the groove (100), and the second body (320) is bonded and pressed onto the groove cover (200).

3. The battery compartment structure according to claim 2, characterized in that, The groove (100) is provided with a first recessed structure or a first protruding structure that cooperates and connects with the first body (310).

4. The battery compartment structure according to claim 2, characterized in that, The groove cover (200) is provided with a second recessed structure or a second protruding structure that cooperates and connects with the second body (320).

5. The battery compartment structure according to claim 2, characterized in that, The side of the groove (100) is provided with a plurality of first pin holes (110), and the first body (310) is provided with second pin holes (330) corresponding to the first pin holes (110) one by one. The first pin holes (110) and the corresponding second pin holes (330) are connected by connectors (400).

6. The battery compartment structure according to claim 5, characterized in that, The first pin hole (110) is provided on each side of the groove (100).

7. The battery compartment structure according to claim 5, characterized in that, The groove cover (200) has a cover body and a connecting wall located on the lower surface of the cover body, the connecting wall being located inside the groove body (100); The connecting wall is provided with a third pin hole (210) that corresponds one-to-one with the first pin hole (110). The first pin hole (110), the second pin hole (330) and the third pin hole (210) are connected by the connector (400).

8. A manufacturing process, characterized in that, Used to manufacture the battery compartment structure as described in any one of claims 1 to 7; The manufacturing process includes: Prepare the tank body (100), the tank cover (200), and the pressing frame (300); Surface treatment is performed on the surfaces where the pressing frame (300) is bonded to the groove (100) and the groove cover (200); Surface treatment is performed on the parts where the tank body (100) and the tank cover (200) are bonded to the pressing frame (300); Apply adhesive to the surfaces where the pressing frame (300) is bonded to the tank body (100) and the tank cover (200), and apply adhesive to the parts where the tank body (100) and the tank cover (200) are bonded to the pressing frame (300); Connect the slot cover (200) to the slot body (100), and connect the pressing frame (300) to the slot body (100) and the slot cover (200) to obtain the battery slot structure; Curing the adhesive; Perform visual inspection on the battery compartment structure.

9. The manufacturing process according to claim 8, characterized in that, The adhesive has a shear strength greater than 10 MPa and a peel strength greater than or equal to 8 kN / m after curing.

10. A battery system, characterized in that, Includes the battery compartment structure as described in any one of claims 1 to 7.

Images