Battery pack box body with FDS connection structure

Abstract

The utility model relates to the technical field of battery packs, in particular to a battery pack box body with an FDS connection structure, which comprises an upper cover shell and a lower bottom shell, a glue filling cushion ring is clamped between the upper cover shell and the lower bottom shell and is connected with the upper cover shell and the lower bottom shell through a first FDS flow drill screw, the inside of the glue filling cushion ring is hollow and is filled with a sealant solution, and the sealant solution is filled in a connection gap between the first FDS flow drill screw and the upper cover shell and the lower bottom shell; the lower bottom shell comprises a bottom wall and a vertical wall vertically connected to the bottom wall, a reinforcing framework is arranged on the upper surface of the bottom wall, a protection plate is arranged on the lower surface of the bottom wall, and the reinforcing framework and the protection plate are connected through a second FDS flow drill screw; according to the utility model, the FDS flow drill screw I and the FDS flow drill screw II act on a plate to be connected, so that the connection strength is high, and the use safety of a battery pack is guaranteed; gaps between the first FDS flow drill screw and the upper cover shell and between the first FDS flow drill screw and the lower bottom shell are rapidly filled, and water vapor, dust and the like are effectively prevented from entering the box body; and the bottom wall of the lower bottom shell is high in integral rigidity and deformation resistance.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, in particular to a battery pack box with an FDS connection structure. Background Art

[0002] With the rapid development of electric vehicles, battery pack performance requirements are becoming increasingly stringent. The connection strength and sealing between the upper and lower shells of the battery pack case are crucial. Traditional bolted connections suffer from poor sealing, low connection strength, and a cumbersome assembly process, making them difficult to adapt to evolving manufacturing technologies. Furthermore, the bottom strength of the battery pack case is a key factor affecting battery safety.

[0003] Therefore, it is necessary to provide a new battery pack case manufactured using FDS connection technology. Utility Model Content

[0004] The purpose of this utility model is to provide a battery pack box with an FDS connection structure, which has the advantages of high connection strength, convenient installation, good sealing performance, etc. by adopting the FDS installation process, and has broad application prospects in the field of new energy vehicle manufacturing.

[0005] In order to achieve the above purpose, the technical solution adopted by the present utility model is as follows:

[0006] The battery pack case of the FDS connection structure includes an upper cover shell and a lower bottom shell, a glue-filled gasket is sandwiched between the two and connected by an FDS flow drill screw. The inside of the glue-filled gasket is hollow and filled with sealing glue liquid, and the sealing glue liquid fills the connection gap between the FDS flow drill screw 1 and the upper cover shell and the lower bottom shell; the lower bottom shell includes a bottom wall and a vertical wall vertically connected to the bottom wall, the upper surface of the bottom wall is provided with a reinforcing frame, and the lower surface of the bottom wall is provided with a protective plate, and the reinforcing frame and the protective plate are connected by an FDS flow drill screw 2.

[0007] Furthermore, the bottom edge of the upper cover shell and the top edge of the lower bottom shell match the shape of the glue-filled gasket, and the glue-filled gasket includes a hollow gasket shell, and the gasket shell is connected to a glue filling port. The sealing glue is input into the gasket shell through the glue filling port, and the FDS flow drill screw penetrates the upper and lower surfaces of the glue-filled gasket and produces a through hole.

[0008] Furthermore, the protective plate includes ≥2 layers of flat plates placed parallel to each other, and two adjacent layers of flat plates are connected by diagonal bracing plates, and a number of cavities with triangular cross-sections are formed between the diagonal bracing plates and the upper and lower flat plates.

[0009] Furthermore, the FDS flow drill screw 1 and the FDS flow drill screw 2 are both screwed and installed from top to bottom.

[0010] Furthermore, a wing plate extending outward is provided on the outer edge of the bottom of the upper cover shell, and the FDS flow drill screw passes through the wing plate downward to sequentially connect the glue-filled gasket ring and the lower bottom shell.

[0011] Furthermore, the periphery of the vertical wall of the bottom shell is provided with an outwardly extending mounting arm and a mounting plate.

[0012] Furthermore, the FDS flow drill screw 1 surrounds the periphery of all FDS flow drill screws 2.

[0013] Furthermore, the sealant liquid is a hot melt adhesive.

[0014] The beneficial effects of adopting the technical solution of the utility model are:

[0015] The FDS connection structure provided by the utility model has a reasonable battery pack box structure. The FDS flow drill screws 1 and 2 act on the plates to be connected, generating frictional heat and causing plastic deformation of the materials under the action of huge axial pressure. This has high connection strength and a simple process, avoiding the risks of deformation in welded connections and loosening in bolted connections, thus ensuring the safety of the battery pack.

[0016] The FDS connection structure battery pack box provided by the utility model is provided with a filling gasket ring. The sealing glue liquid is filled in and solidifies after cooling, so as to quickly fill the connection gap between the FDS flow drill screw and the upper cover shell and the lower bottom shell. It can effectively prevent impurities such as water vapor and dust from entering the box body, ensuring the safe operation of the battery.

[0017] The FDS connection structure battery pack box provided by the utility model strengthens the synchronous installation of the frame and the protective plate, and the FDS process has a firm connection, which significantly improves the overall rigidity and deformation resistance of the bottom wall of the lower bottom shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0020] Figure 2 for Figure 1 A in the middle is an enlarged schematic diagram;

[0021] Figure 3 for Figure 1 The enlarged schematic diagram of point B in the middle;

[0022] Figure 4 This is a schematic diagram of the exploded structure of the utility model;

[0023] Figure 5 This is a schematic diagram of the installation of the FDS flow drill screw 1 in the present utility model;

[0024] Figure 6 This is a schematic diagram of the installation of the FDS flow drill screw 2 in the present utility model.

[0025] In the figure: 1: upper cover shell; 1a: wing plate; 2: lower bottom shell; 2a: bottom wall; 2b: vertical wall; 2b-1: mounting arm; 2b-2: mounting plate; 3: glue-filled gasket; 3a: sealing glue liquid; 3b: gasket shell; 4: FDS flow drill screw 1; 5: reinforcement frame; 6: protective plate; 6a: flat plate; 6b: diagonal support plate; 7: FDS flow drill screw 2. DETAILED DESCRIPTION

[0026] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner, and therefore only show components relevant to the present invention. The present invention is described in detail using structural schematic diagrams and the like.

[0027] See also Figures 1 to 6 , embodiment: FDS connection structure battery pack box, including an upper cover shell 1 and a lower bottom shell 2, a glue filling ring 3 is sandwiched between the two and connected by an FDS flow drill screw 4, the glue filling ring 3 is hollow inside and filled with a sealing glue liquid 3a, the sealing glue liquid 3a is used to fill the connection gap between the FDS flow drill screw 4 and the upper cover shell 1 and the lower bottom shell 2. The FDS connection method has the following advantages: first, the connection strength is high, which can effectively ensure the structural stability of the box; second, the installation process is fast and simple, without the need for complicated operation procedures, thereby improving production efficiency; the upper cover shell 1 and the lower bottom shell 2 are combined and sealed in the upper and lower parts, and the battery cell is arranged in the space between the two; the setting of the glue filling ring 3 further improves the sealing of the box, which can effectively prevent impurities such as water vapor and dust from entering the interior of the box, thereby ensuring the safe operation of the battery;

[0028] Specifically, to further seal the connection between the upper cover 1 and the lower base 2, an outwardly extending wing plate 1a is provided on the bottom outer edge of the upper cover 1. The bottom edge of the upper cover 1 and the top edge of the lower base 2 match the shape of the adhesive-filled gasket 3. An FDS flow drill screw 4 is screwed in from the top down, passing through the wing plate 1a and downwardly connecting the adhesive-filled gasket 3 and the lower base 2. The FDS flow drill screw 4 penetrates both the top and bottom surfaces of the adhesive-filled gasket 3, creating a through-hole. The adhesive-filled gasket 3 includes a hollow gasket shell 3b connected to a filling port. Sealant 3a is introduced into the gasket shell 3b through the filling port and seeps out through the drilled hole, sealing the tiny gap created by the drilled hole and significantly improving the sealing performance of the connection. The sealant 3a is a hot-melt adhesive with a melting point of ≥95°C. It solidifies upon cooling, quickly filling the gaps between the FDS flow drill screw 4 and the upper cover 1 and lower base 2.

[0029] The lower base shell 2 includes a bottom wall 2a and a vertical wall 2b vertically connected to the bottom wall 2a. A reinforcing frame 5 is provided on the upper surface of the bottom wall 2a, and a protective plate 6 is provided on the lower surface of the bottom wall 2a. The reinforcing frame 5 and the protective plate 6 are connected by screwing the FDS flow drill screw 7 from top to bottom to achieve synchronous installation of the reinforcing frame 5 and the protective plate 6. The FDS process has a firm connection, which significantly improves the overall rigidity and anti-deformation ability of the bottom wall 2a of the lower base shell 2.

[0030] The protective plate 6 consists of at least two parallel layers of flat plates 6a. Adjacent layers of flat plates 6a are connected by diagonal braces 6b. Several triangular cavities are formed between the diagonal braces 6b and the upper and lower flat plates 6a. This high-strength bottom structure reduces the risk of battery pack puncture damage, protects key components such as the electrodes and diaphragm, and ensures proper battery operation and safety.

[0031] In summary, the FDS flow drill screws 4 are evenly distributed at the edges of the upper cover shell 1 and the lower bottom shell 2 , and the FDS flow drill screws 4 surround the periphery of all the FDS flow drill screws 7 .

[0032] As a further optimization, the outer periphery of the vertical wall 2b of the bottom shell 2 is provided with outwardly extending mounting arms 2b-1 and mounting plates 2b-2. These are used to hoist the battery pack enclosure and secure it to the vehicle body. The material selection for the upper cover 1 and lower bottom shell 2 must consider environmental compatibility, such as weather resistance, high temperature resistance, and rust and corrosion resistance; they must also possess a certain strength to meet the structural strength requirements of the battery system.

[0033] Traditional battery pack case connection methods have certain shortcomings in terms of stability, sealing, and installation convenience. For example, welding can cause case deformation, affecting battery installation accuracy and safety. Bolted connections can pose a risk of loosening and are more cumbersome to install.

[0034] During assembly, the present invention transmits the high-speed rotational motion of the servo motor to the FDS flow drill screw 1 4 or FDS flow drill screw 2 7 through the central tightening shaft of the FDS device, acting on the plate to be connected, generating frictional heat and causing the material to undergo plastic deformation under the action of huge axial pressure. A cylindrical through hole is formed under the extrusion of the flow drill screw, and the tip of the flow drill screw pierces and screws into the plate to be connected, so that drilling, tapping, and tightening are completed in one step, ultimately forming a firm connection between the plate and the screw. There is no need to pre-fabricate holes in the shell frame, thus ensuring the stability and strength of the shell and reducing the impact on the overall structure of the battery pack. The technical solution of the present invention provides a battery pack using an advanced connection process, which has the advantages of high connection strength, convenient assembly, and good sealing performance, and has broad application prospects in the field of new energy vehicles.

[0035] The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. It should be pointed out that for those skilled in the art, without departing from the concept of the present invention, any relevant changes, modifications or additions should fall within the scope of protection of the present invention.

Claims

1. FDS connection structure battery pack box, characterized by: The invention comprises an upper cover shell (1) and a lower bottom shell (2), wherein a glue-filled gasket (3) is sandwiched between the two and the two are connected by an FDS flow drill screw (4); the inside of the glue-filled gasket (3) is hollow and filled with a sealing glue liquid (3a); the sealing glue liquid (3a) fills the connection gap between the FDS flow drill screw (4) and the upper cover shell (1) and the lower bottom shell (2); the lower bottom shell (2) comprises a bottom wall (2a) and a vertical wall (2b) vertically connected to the bottom wall (2a); the upper surface of the bottom wall (2a) is provided with a reinforcing frame (5), the lower surface of the bottom wall (2a) is provided with a protective plate (6), and the reinforcing frame (5) and the protective plate (6) are connected by an FDS flow drill screw (7).

2. The FDS connection structure battery pack box according to claim 1, characterized in that: The bottom edge of the upper cover shell (1) and the top edge of the lower bottom shell (2) match the shape of the glue-filled gasket (3), and the glue-filled gasket (3) includes a hollow gasket shell (3b), and the gasket shell (3b) is connected to a glue filling port. The sealing glue (3a) is input into the gasket shell (3b) through the glue filling port, and the FDS flow drill screw (4) penetrates the upper and lower surfaces of the glue-filled gasket (3) and generates a through hole.

3. The FDS connection structure battery pack box according to claim 1, characterized in that: The protective plate (6) comprises ≥2 layers of parallel flat plates (6a) placed vertically, two adjacent layers of flat plates (6a) being connected via diagonal support plates (6b), and a plurality of cavities with triangular cross-sections are formed between the diagonal support plates (6b) and the upper and lower flat plates (6a).

4. The FDS connection structure battery pack box according to claim 1, characterized in that: The FDS flow drill screw 1 (4) and the FDS flow drill screw 2 (7) are both screwed in from top to bottom for installation.

5. The FDS connection structure battery pack box according to claim 2, characterized in that: The bottom outer edge of the upper cover shell (1) is provided with a wing plate (1a) extending outward, and the FDS flow drill screw (4) passes through the wing plate (1a) downward to sequentially connect the glue-filled gasket ring (3) and the lower bottom shell (2).

6. The FDS connection structure battery pack box according to claim 1, characterized in that: An outwardly extending mounting arm (2b-1) and a mounting plate (2b-2) are provided on the periphery of the vertical wall (2b) of the bottom shell (2).

7. The FDS connection structure battery pack box according to claim 4, characterized in that: The FDS flow drill screw one (4) surrounds the periphery of all FDS flow drill screws two (7).

8. The FDS connection structure battery pack box according to claim 2, characterized in that: The sealing glue liquid (3a) is a hot melt glue.

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