Composite energy storage end plate

Abstract

The utility model discloses a kind of composite energy storage end plates, including end plate, end plate is divided into the inner side of the one end of battery and the outer side of the one end away from battery, inner side is a big plane, for being contacted with battery, outer side is equipped with longitudinal and horizontal staggered reinforcing rib three, terminal is fixed in end plate top middle, terminal two ends are fixed with the arc column of terminal equal height, the edge and the edge of terminal two sides are equipped with fillet, reinforcing rib one and reinforcing rib two are equipped in terminal inside, reinforcing rib two height is lower than the height of reinforcing rib one, terminal two ends are respectively provided with mounting hole one, mounting hole one top surface is provided with a circle of anti-loosening tooth along circumference, reinforcing rib two staggered place is provided with mounting hole two, mounting hole two diameter is greater than mounting hole one, reinforcing rib three staggered place is provided with two positioning hole one and four positioning hole two, every two positioning hole two distribution is in the upper and lower of positioning hole one, the device solves the problem that current raw material is heavier and not insulated using aluminum alloy.

Description

Technical Field

[0001] This utility model belongs to the technical field of new energy battery structural components, specifically relating to a composite material energy storage end plate. Background Technology

[0002] With the rapid development of electric vehicles and energy storage power stations, higher requirements have been placed on the energy density, safety, and cost control of battery modules. As a key structural component of battery modules, the end plate's main function is to fix the battery cells and withstand the enormous compressive forces during the assembly process.

[0003] Currently, traditional energy storage end plates are mainly made of aluminum alloy through extrusion. This technology has the following obvious disadvantages: aluminum alloy has a high density, resulting in a heavy end plate; aluminum alloy is a good conductor, so to prevent short circuits caused by contact between the end plate and the battery cell, an additional insulating sheet needs to be attached between the end plate and the battery cell, which increases costs; the price of aluminum alloy raw materials and processing costs are relatively high.

[0004] Therefore, there is an urgent need in this field for a new endplate solution that can retain the inherent advantages of composite materials, such as lightweight and insulation, while overcoming the two major bottlenecks mentioned above. Utility Model Content

[0005] The purpose of this invention is to provide a composite material energy storage end plate for existing devices, in order to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a composite material energy storage end plate, including an end plate, the end plate is divided into an inner side facing the battery and an outer side away from the battery. The inner side is a large flat surface for contacting the battery. The outer side is provided with intersecting reinforcing ribs three. A terminal is fixed in the middle of the top of the end plate. Arc-shaped columns of the same height as the terminal are fixed at both ends of the terminal. The edges and corners on both sides of the terminal are rounded. Intersecting reinforcing ribs one and two are provided inside the terminal. The height of reinforcing rib two is lower than that of reinforcing rib one. Mounting holes one are respectively opened at both ends of the terminal. A ring of anti-loosening teeth is provided on the top surface of mounting hole one along the circumference. Mounting holes two are opened at the intersection of reinforcing ribs two. The diameter of mounting holes two is larger than that of mounting holes one.

[0007] This utility model further explains that two positioning holes one and four positioning holes two are provided at the intersection of the three reinforcing ribs. Each pair of positioning holes two is distributed above and below the positioning hole one. The two positioning holes one are symmetrically arranged along the axis of the end plate. The diameter of each positioning hole one is twice the diameter of the positioning hole two. Each positioning hole two is provided with a ring of positioning teeth around its circumference. Reinforcing rib four is provided above and below the three reinforcing ribs respectively. One gap between the three reinforcing ribs is equal to two gaps between the four reinforcing ribs.

[0008] The present invention further explains that the reinforcing rib four is fixed with a boss at the top and bottom respectively, the boss is at the same height as the reinforcing rib three, and positioning grooves are respectively opened on the upper two sides of the outer side surface, and the end plate has a completely symmetrical structure along its own axis.

[0009] The present invention further describes that the top of the end plate is provided with a triangular groove and a trapezoidal groove, and the top corners of the triangular groove and the trapezoidal groove are provided with rounded corners. The two triangular grooves are respectively set on both sides of the axis of the trapezoidal groove, and the hypotenuse of each triangular groove corresponds to the hypotenuse of the trapezoidal groove. Two sets of triangular grooves and trapezoidal grooves are provided on both sides of the terminal.

[0010] This utility model further illustrates that the end plate is fixed with a fixing post at each end. The fixing post has a quarter-circular cross-section and a through waist-shaped hole in the middle of the top of the fixing post. The fixing post is connected to the end plate and a backing plate is fixed to the top of the inner side. The backing plate is L-shaped. Three sets of reinforcing blocks are fixed to the surface of the backing plate near the battery. The reinforcing blocks have a right-angled trapezoidal cross-section and are used to provide strength for the backing plate.

[0011] The present invention further describes that the surface of the fixing column is provided with a through groove, which communicates with the waist-shaped hole. A limiting block one and two sets of limiting blocks two are fixed on the right side of the fixing column. The limiting block one is located in the middle of the right side of the fixing column, and the two sets of limiting blocks two are located at the upper and lower ends of the right side of the fixing column. The length of the limiting block one is equal to the length of the through groove. A limiting block three is fixed on the left side in front of the fixing column. The length of the limiting block three is the same as the entire length of the reinforcing rib three.

[0012] Compared with the prior art, the beneficial effects achieved by this utility model are as follows: This utility model, through the structural design with single-sided reinforcing ribs and the use of compression molding, achieves the maximum structural rigidity with the least amount of material, enabling the end plate to resist external extrusion pressure; through the optimized fiber-reinforced composite material formula, it achieves lightweight while also meeting the requirements of mechanical strength, good insulation and high flame retardancy. Attached Figure Description

[0013] 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; Figure 2 This is a schematic diagram of the overall structure of the terminal of this utility model; Figure 3 This is a schematic diagram of the fixed column structure of this utility model; In the diagram: 1. End plate; 101. Inner side; 102. Outer side; 103. Triangular groove; 104. Trapezoidal groove; 105. Positioning groove; 2. Terminal; 201. Reinforcing rib one; 202. Mounting hole one; 203. Anti-loosening tooth; 204. Mounting hole two; 205. Reinforcing rib two; 206. Arc-shaped column; 3. Fixed post; 301. Backing plate; 302. Reinforcing block; 303. Waist-shaped hole; 304. Limiting block one; 305. Through groove; 306. Limiting block two; 307. Limiting block three; 4. Reinforcing rib three; 401. Positioning hole one; 402. Positioning hole two; 403. Positioning tooth; 5. Reinforcing rib four; 501. Boss. Detailed Implementation

[0014] 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.

[0015] Please see Figure 1-3 The present invention provides a technical solution: a composite material energy storage end plate, including an end plate 1, the end plate 1 is divided into an inner side 101 facing the battery and an outer side 102 away from the battery. The inner side 101 is a large flat surface for contacting the battery. The outer side 102 is provided with intersecting reinforcing ribs 3 4. A terminal 2 is fixed in the middle of the top of the end plate 1. Arc-shaped columns 206 of the same height as the terminal 2 are fixed at both ends of the terminal 2. The edges and corners on both sides of the terminal 2 are rounded. Intersecting reinforcing ribs 1 201 and 2 205 are provided inside the terminal 2. The height of the 2 205 is lower than that of the 1 201. Mounting holes 1 202 are respectively opened at both ends of the terminal 2. A ring of anti-loosening teeth 203 is provided on the top surface of the mounting hole 1 202 along the circumference. Mounting holes 2 204 are opened at the intersection of the 2 205. The diameter of the mounting holes 2 204 is larger than that of the mounting holes 1 202. Two positioning holes 401 and four positioning holes 402 are provided at the intersection of the three reinforcing ribs 4. Each pair of positioning holes 402 are distributed above and below the positioning holes 401. The two positioning holes 401 are symmetrically arranged along the axis of the end plate 1. The diameter of each positioning hole 401 is twice the diameter of the positioning hole 402. Each positioning hole 402 is provided with a ring of positioning teeth 403 around its circumference. The three reinforcing ribs 4 are provided above and below the three reinforcing ribs 4 respectively. The gap between the three reinforcing ribs 4 is equal to the two gaps between the four reinforcing ribs 5. The upper and lower sides of the reinforcing rib 4 5 are respectively fixed with bosses 501. The bosses 501 are at the same height as the reinforcing rib 3 4. The upper sides of the outer side 102 are respectively provided with positioning grooves 105. The end plate 1 has a completely symmetrical structure along its own axis. The top of the end plate 1 is provided with a triangular groove 103 and a trapezoidal groove 104. The apex of the triangular groove 103 and the trapezoidal groove 104 are rounded. The two triangular grooves 103 are respectively set on both sides of the axis of the trapezoidal groove 104. The hypotenuse of each triangular groove 103 corresponds to the hypotenuse of the trapezoidal groove 104. Two sets of triangular grooves 103 and trapezoidal grooves 104 are provided on both sides of the terminal 2. Fixed posts 3 are fixed at both ends of the end plate 1. The cross-section of the fixed post 3 is quarter-circular. A through waist-shaped hole 303 is opened in the middle of the top of the fixed post 3. The fixed post 3 is connected to the end plate 1 and a backing plate 301 is fixed to the top of the inner side 101. The backing plate 301 is L-shaped. Three sets of reinforcing blocks 302 are fixed on the surface of the backing plate 301 near the battery. The cross-section of the reinforcing blocks 302 is a right trapezoid, which is used to provide strength for the backing plate 301. A through groove 305 is provided on the surface of the fixed column 3, which is connected to the waist-shaped hole 303. A limiting block 1 304 and two sets of limiting blocks 2 306 are fixed on the right side of the fixed column 3. The limiting block 1 304 is located in the middle of the right side of the fixed column 3, and the two sets of limiting blocks 2 306 are located at the upper and lower ends of the right side of the fixed column 3. The length of the limiting block 1 304 is equal to the length of the through groove 305. A limiting block 307 is fixed on the left side of the front of the fixed column 3. The length of the limiting block 307 is the same as the entire length of the reinforcing rib 3 4.

[0016] Preparation method: Based on the final three-dimensional design of end plate 1, the upper and lower molds are machined using high-hardness and high-gloss mold steel. The mold cavity must accurately correspond to the shape of end plate 1, including all details such as reinforcing ribs and bolt holes. Then, the main formula modified epoxy vinyl resin and other materials are mixed and prepared into the final blank. The blank is placed into the heated mold cavity, and the upper and lower molds are driven to close. After curing, the end plate 1 is removed using the ejector pin system and then post-processed.

[0017] Finally, through a single-sided reinforcing rib structural design and compression molding, the maximum structural rigidity is achieved with minimal material, thus resisting external compressive forces. Through an optimized fiber-reinforced composite material formula, lightweighting is achieved while also meeting the requirements of mechanical strength, good insulation, and a high flame retardant rating.

[0018] 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.

[0019] 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 composite material energy storage end plate, comprising an end plate (1), characterized in that: The end plate (1) is divided into an inner side (101) facing the battery and an outer side (102) away from the battery. The inner side (101) is a large flat surface, and the outer side (102) is provided with intersecting reinforcing ribs (4). A terminal (2) is fixed in the middle of the top of the end plate (1). Arc-shaped columns (206) of the same height as the terminal (2) are fixed at both ends of the terminal (2). The edges and corners on both sides of the terminal (2) are rounded. The part is provided with intersecting reinforcing ribs 1 (201) and 2 (205). The height of the 2 (205) is lower than that of the 1 (201). The terminal (2) is provided with mounting holes 1 (202) at both ends. The top surface of the mounting hole 1 (202) is provided with a ring of anti-loosening teeth (203) along the circumference. The 2 (204) is provided at the intersection of the 2 (205) and the diameter of the mounting hole 2 (204) is larger than that of the mounting hole 1 (202).

2. The composite material energy storage end plate according to claim 1, characterized in that: Two positioning holes (401) and four positioning holes (402) are provided at the intersection of the three reinforcing ribs (4). Each pair of positioning holes (402) is distributed above and below the positioning holes (401). The two positioning holes (401) are arranged symmetrically along the axis of the end plate (1). The diameter of each positioning hole (401) is twice the diameter of the positioning hole (402). Each positioning hole (402) is provided with a ring of positioning teeth (403) around its circumference. Reinforcing ribs (45) are provided above and below the three reinforcing ribs (4). One gap between the three reinforcing ribs (4) is equal to two gaps between the four reinforcing ribs (5).

3. The composite material energy storage end plate according to claim 2, characterized in that: The upper and lower sides of the fourth reinforcing rib (5) are respectively fixed with bosses (501), the bosses (501) are the same height as the third reinforcing rib (4), the upper sides of the outer side (102) are respectively provided with positioning grooves (105), and the end plate (1) has a completely symmetrical structure along its own axis.

4. The composite material energy storage end plate according to claim 3, characterized in that: The end plate (1) has a triangular groove (103) and a trapezoidal groove (104) at the top. The apex of the triangular groove (103) and the trapezoidal groove (104) is rounded. The two triangular grooves (103) are respectively set on both sides of the axis of the trapezoidal groove (104). The hypotenuse of each triangular groove (103) corresponds to the hypotenuse of the trapezoidal groove (104). The terminal (2) has two sets of triangular grooves (103) and trapezoidal grooves (104) on both sides.

5. A composite material energy storage end plate according to claim 4, characterized in that: The end plate (1) is fixed with a fixing post (3) at both ends. The fixing post (3) has a quarter circle cross section. A through waist-shaped hole (303) is opened in the middle of the top of the fixing post (3). The fixing post (3) is connected to the end plate (1) and a backing plate (301) is fixed on the top of the inner side (101). The backing plate (301) is L-shaped. Three sets of reinforcing blocks (302) are fixed on the surface of the backing plate (301) near the battery. The reinforcing block (302) has a right trapezoidal cross section.

6. A composite material energy storage end plate according to claim 5, characterized in that: The surface of the fixed column (3) is provided with a through groove (305), which is connected to the waist-shaped hole (303). A limiting block one (304) and two sets of limiting blocks two (306) are fixed on the right side of the fixed column (3). The limiting block one (304) is located in the middle of the right side of the fixed column (3), and the two sets of limiting blocks two (306) are located at the upper and lower ends of the right side of the fixed column (3). The length of the limiting block one (304) is equal to the length of the through groove (305). A limiting block three (307) is fixed on the left side in front of the fixed column (3). The length of the limiting block three (307) is the same as the entire length of the reinforcing rib three (4).

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