A terminal side-mounted end plate

Abstract

The utility model discloses a terminal side direction installation's end plate, which comprises an end plate and a terminal, the end plate is in the cuboid type, the end plate includes an inside surface facing a battery module and an outside surface away from the battery module, the end plate top is fixed with the protruding portion, the protruding portion inside is provided with the ladder groove, the ladder groove does not penetrate the protruding portion, the ladder groove is the symmetrical upper narrow lower shape ladder shape, the terminal shape is adapted with the shape of ladder groove, the ladder groove is slidably connected with the terminal, the outside body of terminal is provided with the rounded corner on the edge, the terminal top is provided with the connecting hole, and the connecting hole is used for external electrical connection, the end plate body is integrally formed by the fiber reinforced composite material through the mould pressing process, the end plate both ends are fixedly connected with the fixed column, the edge of fixed column outside surface is provided with the rounded corner, the fixed column length is less than the end plate length, and the thickness of fixed column is greater than the thickness of end plate, and the device solves the problem that the hole opening is difficult when the current end plate is formed.

Description

Technical Field

[0001] This utility model belongs to the field of energy storage equipment manufacturing technology, specifically relating to an end plate with terminals mounted on the side. Background Technology

[0002] In energy storage devices such as lithium-ion battery modules and supercapacitor modules, end plates, as key structural components, are located at both ends of the cell stack, serving to support, constrain, and insulate. Electrical terminals are mounted on the end plates and are the core interface for power transmission between the module and external circuits. To ensure absolute reliability of the electrical connection, the terminals must possess excellent pull-out resistance (i.e., Z-axis fixing capacity) to withstand the continuous mechanical stress and potential accidental pulling generated by external cables or busbar connections. Currently, the commonly used end plate terminal fixing solution in the industry is as follows: a Z-axis through hole is opened in the end plate body for the terminal to pass through, and then a hexagonal blind hole (also called a hexagonal bottom hole) is machined on the side of the end plate (usually in the Y direction). A screw, screwed into the side nut from the outside (Z direction) of the end plate, presses the terminal firmly onto the end plate. This solution relies on the mechanical interlock between the hexagonal structure of the side nut and the hexagonal bottom hole of the end plate to withstand the Z-axis pull-out force.

[0003] However, the aforementioned existing technical solutions have several inherent drawbacks: First, the processing technology is complex and costly. Precision machining a non-circular hexagonal blind hole on the side of the engineering plastic end plate requires extremely high mold design and machining precision, often necessitating specialized tools or additional secondary machining processes, increasing manufacturing costs and time. Second, there is a risk to structural integrity. The hexagonal hole structure introduces sharp corners into the end plate, forming stress concentration points, significantly weakening the mechanical strength of the end plate when subjected to the enormous lateral pressure generated by the expansion of the battery cell, potentially leading to end plate cracking and endangering the safety of the entire module. Therefore, this phenomenon has become a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] The purpose of this invention is to provide a terminal side-mounted end plate for existing devices, in order to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a terminal side-mounted end plate, including an end plate and a terminal, the end plate is rectangular in shape, the end plate includes an inner side facing the battery module and an outer side facing away from the battery module, a protrusion is fixed on the top of the end plate, a stepped groove is formed inside the protrusion, the stepped groove does not penetrate the protrusion, the stepped groove is symmetrically narrow at the top and wide at the bottom, the shape of the terminal is adapted to the shape of the stepped groove, and the stepped groove is slidably connected to the terminal.

[0006] This utility model further describes that the outer periphery of the terminal is provided with rounded corners, and the top of the terminal is provided with a connection hole for external electrical connection. The end plate body is integrally formed by molding fiber reinforced composite material. Fixed posts are fixedly connected to both ends of the end plate. The outer side of the fixed post is provided with rounded corners. The length of the fixed post is less than the length of the end plate, and the thickness of the fixed post is greater than the thickness of the end plate. A waist-shaped hole is provided in the center of the top of the fixed post, and a square groove is provided on the side of the fixed post away from the inner side. The square groove is square and communicates with the waist-shaped hole. A square groove is provided in the middle of the front of the fixed post. The square groove is rectangular and communicates with the waist-shaped hole, for fixing and connecting the upper and lower battery fixing plates.

[0007] The present invention further explains that two sets of arc-shaped grooves are provided in front of the fixed column. The bottom of the arc-shaped grooves is parallel to the surface of the end plate. One set of arc-shaped grooves is located between square groove one and square groove two, and the other set of arc-shaped grooves is located below square groove two.

[0008] This utility model further explains that several limiting blocks are fixed in front of the fixed column for limiting and fixing the plate connected to the outside. A through hole is opened at the top of the end plate for subsequent tool operation space. The inner side of the end plate is a large plane, and several rectangular grooves one, two, and three are opened on the outer side of the end plate. The area of ​​rectangular groove one is about one-third of the area of ​​rectangular groove two, and the area of ​​rectangular groove three is about twice the area of ​​rectangular groove one.

[0009] This utility model further explains that the plurality of rectangular grooves 1, 2, and 3 are provided with multiple rounded corners. The rectangular grooves 1, 2, and 3 are arranged symmetrically. There are two sets of rectangular grooves 1 on each side, and one set each of rectangular grooves 2 and 3. The plurality of rectangular grooves 1, 2, and 3 together form crisscrossing reinforcing ribs, which can achieve lightweight, high strength, high reliability, and material saving of the end plate, and can also achieve auxiliary heat dissipation.

[0010] The present invention further explains that the outer side of the end plate is provided with two symmetrical operating holes, which are located at the intersection of the reinforcing ribs. The operating holes provide a channel for fingers or tools during the assembly process, making it convenient to pick up, position and install the end plate.

[0011] Compared with the prior art, the beneficial effects achieved by this utility model are: by setting a scheme with lateral mounting terminals, this utility model eliminates the need to drill hexagonal bottom holes on the side of the end plate during product molding, while still meeting the customer's Z-direction fixing requirements. Attached Figure Description

[0012] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; In the diagram: 1. End plate; 101. Through hole; 102. Rectangular groove one; 103. Rectangular groove two; 104. Rectangular groove three; 105. Reinforcing rib; 2. Terminal; 201. Connecting hole; 3. Protrusion; 301. Stepped groove; 4. Fixing post; 401. Waist-shaped hole; 402. Square groove one; 403. Square groove two; 404. Arc groove; 405. Limiting block; 5. Operating hole. Detailed Implementation

[0013] The following detailed, non-limiting description of the present invention, in conjunction with preferred embodiments and accompanying drawings, is provided. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0014] Please see Figure 1 The present invention provides a technical solution: a terminal side-mounted end plate, including an end plate 1 and a terminal 2. The end plate 1 is rectangular in shape and includes an inner side facing the battery module and an outer side facing away from the battery module. A protrusion 3 is fixed on the top of the end plate 1. A stepped groove 301 is opened inside the protrusion 3. The stepped groove 301 does not penetrate the protrusion 3. The stepped groove 301 is symmetrically stepped with a narrow top and a wide bottom. The shape of the terminal 2 is adapted to the shape of the stepped groove 301. The stepped groove 301 is slidably connected to the terminal 2. The outer perimeter of terminal 2 is rounded, and a connection hole 201 is provided on the top of terminal 2 for external electrical connection. The end plate 1 body is integrally formed by molding fiber reinforced composite material. Fixed posts 4 are fixedly connected to both ends of end plate 1. The outer side of fixed post 4 is rounded. The length of fixed post 4 is less than the length of end plate 1, and the thickness of fixed post 4 is greater than the thickness of end plate 1. A waist-shaped hole 401 is provided in the center of the top of fixed post 4. A square groove 402 is provided on the side of fixed post 4 away from the inner side. The square groove 402 is square and communicates with the waist-shaped hole 401. A square groove 403 is provided in the middle of the front of fixed post 4. The square groove 403 is rectangular and communicates with the waist-shaped hole 401 for fixing and connecting the upper and lower battery fixing plates. Two sets of arc-shaped grooves 404 are provided in front of the fixed column 4. The bottom of the arc-shaped grooves 404 is parallel to the surface of the end plate 1. One set of arc-shaped grooves 404 is located between square groove one 402 and square groove two 403, and the other set of arc-shaped grooves 404 is located below square groove two 403. Several limiting blocks 405 are fixed in front of the fixed column 4 for limiting and fixing the plate connected to the outside. The top of the end plate 1 has a through hole 101 for the operation space of subsequent tools. The inner side of the end plate 1 is a large plane. Several rectangular grooves 102, 103 and 104 are opened on the outer side of the end plate 1. The area of ​​rectangular groove 102 is about one-third of the area of ​​rectangular groove 2 103, and the area of ​​rectangular groove 3 104 is about twice the area of ​​rectangular groove 102. Several rectangular slots 102, 103, and 104 have multiple rounded corners. The rectangular slots 102, 103, and 104 are arranged symmetrically. There are two sets of rectangular slots 102 on each side, and one set each of rectangular slots 103 and 104. The rectangular slots 102, 103, and 104 together form crisscrossing reinforcing ribs 105, which can achieve lightweight, high strength, high reliability, and material saving of end plate 1, and can also achieve auxiliary heat dissipation. The outer side of the end plate 1 is provided with two symmetrical operating holes 5. The operating holes 5 are located at the intersection of the reinforcing ribs 105. The operating holes 5 provide a channel for fingers or tools during the assembly process, making it easy to pick up, position and install the end plate 1.

[0015] Working principle: This utility model is suitable for scenarios where there is no pull force in the Y direction. First, during the assembly process, the terminal 2 moves along the Y direction parallel to the outer side of the end plate 1. The operator aligns the terminal 2 with the entrance of the stepped groove 301 on the end plate 1 and pushes it in. Then, the external wiring is connected to the connection hole 201. The waist-shaped hole 401 is used to fix the upper and lower plates. The cross-section of the terminal 2 is adapted to the cross-section of the stepped groove 301, ensuring that the terminal 2 can slide smoothly and accurately to the predetermined working position. The stepped shape meets the customer's Z-direction fixing requirements.

[0016] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model, 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 utility model.

[0017] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model 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 of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A terminal side-mounted end plate, comprising an end plate (1) and terminals (2), characterized in that: The end plate (1) is rectangular in shape. The end plate (1) includes an inner side facing the battery module and an outer side facing away from the battery module. A protrusion (3) is fixed on the top of the end plate (1). A stepped groove (301) is provided inside the protrusion (3). The stepped groove (301) does not penetrate the protrusion (3). The stepped groove (301) is symmetrical, narrow at the top and wide at the bottom, in a stepped shape. The shape of the terminal (2) is adapted to the shape of the stepped groove (301). The stepped groove (301) is slidably connected to the terminal (2).

2. The terminal side-mounted end plate according to claim 1, characterized in that: The outer periphery of the terminal (2) is provided with rounded corners. The top of the terminal (2) is provided with a connection hole (201) for external electrical connection. The end plate (1) body is integrally formed by fiber reinforced composite material through molding process. The two ends of the end plate (1) are fixedly connected with fixing posts (4). The outer side of the fixing post (4) is provided with rounded corners. The length of the fixing post (4) is less than the length of the end plate (1). The thickness of the fixing post (4) is greater than the thickness of the end plate (1). The center of the top of the fixing post (4) is provided with a waist-shaped hole (401) that passes through the fixing post (4). The side of the fixing post (4) away from the inner side is provided with a square groove (402). The square groove (402) is square and communicates with the waist-shaped hole (401). The middle of the front of the fixing post (4) is provided with a square groove (403). The square groove (403) is rectangular and communicates with the waist-shaped hole (401) for fixing and communicating the upper and lower battery fixing plates.

3. The terminal side-mounted end plate according to claim 2, characterized in that: Two sets of arc-shaped grooves (404) are provided in front of the fixed column (4). The bottom of the arc-shaped grooves (404) is parallel to the surface of the end plate (1). One set of the arc-shaped grooves (404) is located between square groove one (402) and square groove two (403), and the other set of the arc-shaped grooves (404) is located below square groove two (403).

4. The terminal side-mounted end plate according to claim 3, characterized in that: Several limiting blocks (405) are fixed in front of the fixed column (4). A through hole (101) is opened on the top of the end plate (1). The inner side of the end plate (1) is a large plane. Several rectangular grooves one (102), two (103) and three (104) are opened on the outer side of the end plate (1). The area of ​​rectangular groove one (102) is about one-third of the area of ​​rectangular groove two (103). The area of ​​rectangular groove three (104) is about twice the area of ​​rectangular groove one (102).

5. The terminal side-mounted end plate according to claim 4, characterized in that: The rectangular grooves 1 (102), 2 (103) and 3 (104) are provided with multiple rounded corners. The rectangular grooves 1 (102), 2 (103) and 3 (104) are arranged symmetrically. There are two sets of rectangular grooves 1 (102) on each side, and one set of rectangular grooves 2 (103) and 3 (104) on each side. The rectangular grooves 1 (102), 2 (103) and 3 (104) together form a crisscrossing reinforcing rib (105).

6. The terminal side-mounted end plate according to claim 5, characterized in that: The end plate (1) has two symmetrical operating holes (5) on its outer side, and the operating holes (5) are located at the intersection of the reinforcing ribs (105).

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