Concave-convex occlusion end plate structure and battery thereof

Abstract

The utility model discloses a concave-convex meshed end plate structure which comprises two end plates, a plurality of first protrusions and a plurality of first grooves are arranged on one end plate, and a plurality of second protrusions and a plurality of second grooves are arranged on the other end plate. The other end plate is provided with a plurality of second protrusions and a plurality of second grooves, the second protrusions and the first protrusions are distributed in a staggered mode, the second grooves and the first grooves are distributed in a staggered mode, and the first protrusions are matched with the second grooves in a positioning mode. And the plurality of second bulges are respectively positioned and matched with the plurality of first grooves. A concave-convex occlusion structure is formed between the two end plates, so that the slippage phenomenon between two adjacent modules is effectively reduced, and the arrangement stability of the power battery modules is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of power batteries for new energy vehicles, and in particular to a concave-convex interlocking end plate structure and its battery. Background Technology

[0002] In the research and development of new energy vehicles, cost control and performance improvement have always been key concerns for both OEMs and consumers. Especially in the development of urban commuter vehicles and public transportation vehicles, how to effectively reduce costs and improve the cost-effectiveness of vehicles while ensuring performance has become a hot and challenging issue in the industry. Among these, the power battery, as a core component of new energy vehicles, directly affects the competitiveness of the entire vehicle through its performance and cost.

[0003] To improve the energy density and volumetric density of power batteries, thereby enhancing the driving range and space utilization of vehicles, the industry has conducted extensive research and exploration into the design of power battery packs. However, existing power battery modules still face numerous challenges in their design and installation. On the one hand, limited space within vehicles often restricts the installation space for power battery modules, making efficient layout and installation within this confined space a pressing issue. On the other hand, during long-term use, modules within a power battery module are prone to slippage due to vibration, impact, and other factors. This not only affects the overall stability of the power battery module but may also pose a potential threat to battery performance and safety. Utility Model Content

[0004] In view of the above-mentioned problems of existing power battery modules, this paper aims to provide a concave-convex interlocking end plate structure and its battery that reduces installation space and improves installation stability.

[0005] The specific technical solution is as follows:

[0006] A concave-convex interlocking end plate structure includes: two end plates, which are disposed opposite to each other. One end plate has a plurality of first protrusions and a plurality of first grooves, and the other end plate has a plurality of second protrusions that are respectively distributed alternately with the plurality of first protrusions and a plurality of second grooves that are respectively distributed alternately with the plurality of first grooves. The plurality of first protrusions are respectively positioned and engaged with the plurality of second grooves, and the plurality of second protrusions are respectively positioned and engaged with the plurality of first grooves.

[0007] As a further improvement and optimization of this solution, each of the first protrusions and each of the second protrusions is provided with a tie rod fixing hole.

[0008] As a further improvement and optimization of this solution, each end plate has a lifting structure at its top.

[0009] As a further improvement and optimization of this solution, the lifting structure includes lifting lugs provided on the end plate.

[0010] As a further improvement and optimization of this solution, the lifting lug is located in the middle of the end plate.

[0011] As a further improvement and optimization of this solution, each end plate is a rectangular plate, and multiple first protrusions / multiple second protrusions are arranged along the length direction of the end plate, and multiple first grooves / multiple second grooves are arranged along the length direction of the end plate.

[0012] As a further improvement and optimization of this solution, each of the first protrusions / each of the second protrusions is distributed along the width direction of the end plate, and each of the first grooves / each of the second grooves is distributed along the width direction of the end plate.

[0013] As a further improvement and optimization of this solution, the length of each first protrusion, the length of each second protrusion, the groove length of each first groove, and the groove length of each second groove are all consistent with the width of the end plate.

[0014] As a further improvement and optimization of this solution, the tie rod fixing hole extends through the first protrusion / second protrusion along the width direction of the end plate.

[0015] A battery includes any one of the above-described concave-convex interlocking end plate structures, and further includes at least two modules, wherein the two end plates of the concave-convex interlocking end plate structure are respectively connected to the opposite end faces of the two modules.

[0016] The positive effects of the above technical solution compared with the existing technology are:

[0017] (1) In this utility model, multiple first protrusions are positioned and engaged with multiple second grooves respectively, and multiple second protrusions are positioned and engaged with multiple first grooves respectively, so that a concave-convex interlocking structure is formed between the two end plates, which effectively reduces the slippage phenomenon between adjacent modules and improves the overall stability of the power battery module.

[0018] (2) In this utility model, the tie rod fixing hole is located on the first protrusion / second protrusion, which effectively reduces the design thickness of the end plate and thus reduces the overall installation space of the power battery module.

[0019] (3) Each end plate in this utility model has a lifting structure at the top to solve the problem that the gap between the two end plates is too small to lift. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the concave-convex interlocking end plate structure of the present invention and the two modules of its battery in the assembled state.

[0021] Figure 2 This is a schematic diagram of the concave-convex interlocking end plate structure of the present invention and the structure of the two end plates of the battery in the concave-convex interlocking state.

[0022] Figure 3 This is a schematic diagram of the concave-convex interlocking end plate structure of the present invention and the structure of the two end plates of the battery in the concave-convex interlocking state.

[0023] Figure 4 This is an exploded view of the concave-convex interlocking end plate structure and its battery according to the present invention.

[0024] Figure 5 This is a perspective view of a concave-convex interlocking end plate structure and its battery according to the present invention.

[0025] In the attached diagram: 1. Module; 2. End plate; 11. Side plate; 21. Lifting structure; 22. First groove; 23. First protrusion; 24. Second groove; 25. Second protrusion; 231. Pull rod fixing hole. Detailed Implementation

[0026] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] In the description of this utility model, 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. They are used only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 utility model based on the specific circumstances.

[0029] Figure 1 This is a schematic diagram of the concave-convex interlocking end plate structure of the present invention and the two modules of the battery in the assembled state. Figure 2 This is a schematic diagram of the concave-convex interlocking end plate structure of the present invention and the structure of the two end plates of the battery in the concave-convex interlocking state. Figure 3 This is a schematic diagram of the concave-convex interlocking end plate structure of the present invention and the structure of the two end plates of the battery in the concave-convex interlocking state. Figure 4 This is an exploded view of the interlocking end plate structure and its battery according to the present invention. Figure 5 This is a perspective view of a concave-convex interlocking end plate structure and its battery according to the present invention. Figure 1-5 The image shows a preferred embodiment of a tongue-and-groove interlocking end plate structure, comprising: two end plates 2, which are disposed opposite to each other. One end plate 2 has a plurality of first protrusions 23 and a plurality of first grooves 22, and the other end plate 2 has a plurality of second protrusions 25 that are respectively distributed alternately with the plurality of first protrusions 23 and a plurality of second grooves 24 that are respectively distributed alternately with the plurality of first grooves 22. The plurality of first protrusions 23 are respectively positioned and engaged with the plurality of second grooves 24, and the plurality of second protrusions 25 are respectively positioned and engaged with the plurality of first grooves 22.

[0030] In this embodiment, multiple first protrusions 23 are positioned and engaged with multiple second grooves 24, and multiple second protrusions 25 are positioned and engaged with multiple first grooves 22, so that a concave-convex interlocking structure is formed between the two end plates 2, which effectively reduces the slippage phenomenon between adjacent modules 1 and improves the overall stability of the power battery module.

[0031] Furthermore, as a preferred embodiment, each first protrusion 23 and each second protrusion 25 are provided with a tie rod fixing hole 231. When the module 1 is placed into the box, a tie rod (i.e. a long bolt) is used to fasten the module 1 to the box through the tie rod fixing hole 231.

[0032] In this embodiment, the tie rod fixing hole 231 is provided on the first protrusion 23 / second protrusion 25, which effectively reduces the design thickness of the end plate 2, thereby reducing the overall installation space of the power battery module 1.

[0033] Furthermore, as a preferred embodiment, each end plate 2 has a lifting structure 21 at its top to solve the problem of insufficient lifting due to the small gap between the two end plates 2.

[0034] Furthermore, as a preferred embodiment, the lifting structure 21 includes lifting lugs disposed on the end plate 2.

[0035] Furthermore, as a preferred embodiment, the lifting lug is located in the middle of the end plate 2 to balance the force on the end plate 2 when lifting the lifting module 1 and improve the lifting stability.

[0036] Furthermore, in a preferred embodiment, each end plate 2 is a rectangular plate, with a plurality of first protrusions 23 / a plurality of second protrusions 25 arranged along the length direction of the end plate 2, and a plurality of first grooves 22 / a plurality of second grooves 24 arranged along the length direction of the end plate 2.

[0037] Furthermore, as a preferred embodiment, each first protrusion 23 / each second protrusion 25 is distributed along the width direction of the end plate 2, and each first groove 22 / each second groove 24 is distributed along the width direction of the end plate 2.

[0038] Furthermore, in a preferred embodiment, the length of each first protrusion 23, the length of each second protrusion 25, the groove length of each first groove 22, and the groove length of each second groove 24 are all consistent with the width of the end plate 2.

[0039] Furthermore, as a preferred embodiment, each end plate 2 is cast or extruded from metal, plastic, or composite material.

[0040] Furthermore, as a preferred embodiment, the tie rod fixing hole 231 extends through the first protrusion 23 / second protrusion 25 along the width direction of the end plate 2.

[0041] A battery includes any one of the above-mentioned interlocking end plate structures, and further includes at least two modules 1, wherein the two end plates 2 of the interlocking end plate structure are respectively connected to the opposite end faces of the two modules 1.

[0042] The battery is a power battery.

[0043] Based on the above, this utility model also has the following embodiments:

[0044] In a further embodiment of the present invention, each module 1 is composed of two end plates 2, a battery cell and a buffer material between the battery cells stacked together. The module 1 is assembled by first extruding and then welding or riveting the side plates 11 of the module 1.

[0045] The assembly process for two adjacent modules 1 in the power battery module 1 is as follows:

[0046] S1: It is formed by stacking two end plates 2, battery cells, and buffer materials between battery cells. First, it is squeezed, and then the two end plates 2 are welded or riveted to the side plates 11 of the module 1 to complete the assembly of one module 1.

[0047] S2: Repeat step S1 to complete the assembly of another module 1;

[0048] S3: The two modules 1 are lifted into the box by hoisting equipment;

[0049] S4: After entering the box, multiple first protrusions 23 in the adjacent end plates 2 of the two modules 1 are respectively positioned and engaged with multiple second grooves 24, and multiple second protrusions 25 are respectively positioned and engaged with multiple first grooves 22, so that a concave-convex interlocking structure is formed between the adjacent end plates 2 of the two modules 1, and then multiple pull rods are respectively passed through multiple pull rod fixing holes 231 and fastened to the box body.

[0050] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A concave-convex interlocking end plate structure, characterized in that, include: Two end plates are disposed opposite to each other. One end plate has a plurality of first protrusions and a plurality of first grooves. The other end plate has a plurality of second protrusions that are staggered with the plurality of first protrusions and a plurality of second grooves that are staggered with the plurality of first grooves. The plurality of first protrusions are respectively positioned and engaged with the plurality of second grooves, and the plurality of second protrusions are respectively positioned and engaged with the plurality of first grooves.

2. The interlocking end plate structure according to claim 1, characterized in that, Each of the first protrusions and each of the second protrusions is provided with a tie rod fixing hole.

3. The interlocking end plate structure according to claim 1, characterized in that, Each of the end plates has a lifting structure at its top.

4. The interlocking end plate structure according to claim 3, characterized in that, The lifting structure includes lifting lugs provided on the end plate.

5. The interlocking end plate structure according to claim 4, characterized in that, The lug is located in the middle of the end plate.

6. The interlocking end plate structure according to claim 2, characterized in that, Each end plate is a rectangular plate, with multiple first protrusions / multiple second protrusions arranged along the length direction of the end plate, and multiple first grooves / multiple second grooves arranged along the length direction of the end plate.

7. The interlocking end plate structure according to claim 6, characterized in that, Each of the first protrusions / each of the second protrusions is distributed along the width direction of the end plate, and each of the first grooves / each of the second grooves is distributed along the width direction of the end plate.

8. The interlocking end plate structure according to claim 7, characterized in that, The length of each of the first protrusions, the length of each of the second protrusions, the groove length of each of the first grooves, and the groove length of each of the second grooves are all consistent with the width of the end plate.

9. The interlocking end plate structure according to claim 8, characterized in that, The tie rod fixing hole extends through the first protrusion / second protrusion along the width direction of the end plate.

10. A battery, characterized in that, The concave-convex interlocking end plate structure according to any one of claims 1-9 further includes at least two modules, wherein the two end plates of the concave-convex interlocking end plate structure are respectively connected to the opposite end faces of the two modules.

Images