Tray cover fixing structure and battery module

Abstract

The utility model belongs to the technical field of battery package, specifically discloses a tray upper cover fixed structure and battery module. The structure includes tray and upper cover plate, is provided with the boss on the tray, is equipped with the matching structure of embedding with the boss on the upper cover plate. The boss can realize the direct connection of tray and upper cover plate, make it fixed on the module, has spared rivet secondary connection, has improved the efficiency, has reduced the cost and risk. The tray is equipped with the boss, improves the strength of tray, has reduced the punching process, has improved the efficiency greatly reduced the cost. The tray boss structure provided by the utility model is compatible with the existing module upper cover design, has spared rivet, and the manufacturing process is simple, and the cost is low, and it is convenient, safe when using.

Description

Technical Field

[0001] This utility model relates to the field of new energy battery module design, specifically to a battery module tray cover fixing structure. Background Technology

[0002] With the adjustment of national energy strategy and the demands of the living environment, the new energy industry is taking up an increasingly larger market share, and battery modules, as a separate module, are very important in electric vehicle systems. Conventional battery module trays do not have bosses, and the top cover and tray need to be connected by rivets. However, rivets are prone to falling off the module, posing risks such as short circuits and abnormal noises.

[0003] Chinese patent CN216784412U discloses a double-layer packaging device for battery module turnover. This device forms a blister packaging mechanism by inserting a blister tray into a blister frame. The battery module is then placed inside the blister tray. At least two blister packaging mechanisms are stacked, with the lower blister frame supporting the upper blister frame, and the lower blister tray supporting the upper blister frame, thus creating a stable support frame. This ensures a stable packaging structure and prevents deformation of the blister tray and frame under pressure, thereby avoiding damage to the battery module during turnover.

[0004] However, existing technologies still have the following drawbacks:

[0005] First, the main way to connect the tray and the cover is still a secondary connection with rivets, which is time-consuming, labor-intensive, and unsafe.

[0006] Secondly, the materials of the top cover are diverse, and the existing packaging equipment has high requirements for structural matching, making it difficult to be applicable to various top covers.

[0007] Third, the hot-riveted tie rods used in the packaging structure prevented the top cover from fitting properly. Utility Model Content

[0008] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a tray cover fixing structure and battery module, so that the tray and the cover plate can be directly connected and fixed on the module, eliminating the need for secondary connection with rivets, improving efficiency, and reducing costs and risks.

[0009] To achieve the above objectives / to solve the above technical problems, this utility model adopts the following technical solution:

[0010] In the first aspect, this utility model provides a tray cover fixing structure, including a tray and a cover plate;

[0011] The tray is provided with a boss;

[0012] The upper cover plate is provided with a fitting structure that matches the boss.

[0013] The technical effects of the above setup are: the boss can directly connect the tray and the top cover, fixing them to the module, eliminating the need for secondary rivet connections, improving efficiency, and reducing costs and risks.

[0014] The pallet is equipped with bosses, which increases the pallet's strength, reduces the need for punching, and greatly improves efficiency while reducing costs.

[0015] Furthermore, the bottom of the boss is provided with a recessed structure around the tray plane.

[0016] The technical effect of the above configuration is that the recessed structure can prevent the top cover plate from not fitting properly due to the hot riveting column tie rod.

[0017] Furthermore, an annular protrusion is provided on the upper part of the protrusion; the shape of the annular protrusion matches the fitting structure.

[0018] Furthermore, the boss has an elastic foam structure below the annular protrusion; when the tray is connected to the upper cover, the elastic foam structure is compressed and then rebounds to press against the upper cover.

[0019] The technical effect of the above configuration is that the elastic foam structure firmly fixes the top cover to the tray boss, making it less likely to fall off or shake.

[0020] Furthermore, the upper cover plate is a mica upper cover plate; the fitting structure includes a through hole with a diameter smaller than the outer diameter of the annular protrusion but larger than the lower diameter of the protrusion.

[0021] The technical effect of the above configuration is that the annular protrusion can be directly locked onto the cover plate (a rigid material) on the mica plate.

[0022] Furthermore, the upper cover plate is a thermoformed upper cover plate, and the fitting structure includes an inner groove on the upper cover plate that faces the opening of the protrusion, and the inner groove is provided with a cavity that matches the annular protrusion.

[0023] The technical effect of the above configuration is that the annular protrusion can form a fitting structure with the mica top cover (hard) and the blister top cover (soft), which is firmly fixed and easy to disassemble.

[0024] Furthermore, the elastic foam structure is circular below the annular protrusion of the boss and wraps around the boss, so that the top cover can fit tightly together with the boss when they are engaged.

[0025] The dimensions of the elastic foam structure are adjusted according to the size of the boss.

[0026] The outer diameter of the foam structure is consistent with the annular protrusion of the boss. The inner diameter of the foam structure and the outer diameter of the boss are closely attached. The height of the foam accounts for 1 / 2 to 1 / 4 of the height of the boss, preferably 1 / 3.

[0027] Furthermore, the top of the annular protrusion has a chamfer angle of 35°~45°, the height of the annular protrusion is 1~3mm, and the outer diameter is 2~6mm.

[0028] The height of the boss is generally 3-10mm, preferably ≤5mm, and the annular protrusion accounts for about 1 / 3 of the boss height.

[0029] Secondly, this utility model provides a battery module, including the tray cover fixing structure as described in the first aspect.

[0030] Compared with the prior art, the beneficial effects achieved by this utility model are as follows:

[0031] 1. Direct connection between the tray and the top cover allows them to be fixed to the module, eliminating the need for secondary rivet connections, improving efficiency, and reducing costs and risks.

[0032] 2. The bottom of the boss forms a concave structure on the flat surface. The upper part of the boss has an annular protrusion, which can form a fitting structure with the blister-formed top cover (soft) and can directly engage with the mica top cover (rigid), securing the top cover to the boss. Simultaneously, there is an elastic foam structure beneath the annular protrusion. When the top cover and boss are combined, the foam is compressed and then rebounds, pressing against the top cover and firmly fixing it to the tray boss, preventing it from easily falling off or shaking. This eliminates the need for rivets, simplifying the process and reducing costs.

[0033] 3. High versatility in functionality; this design can be used for top covers made of all materials. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the module of this utility model.

[0035] Figure 2 This is a diagram of the tray of this utility model.

[0036] Figure 3 This is a diagram illustrating the combination of the tray and the top cover of this utility model.

[0037] Figure 4 This is a schematic diagram showing the connection between the boss and the vacuum-formed top cover of this utility model.

[0038] Figure 5 This is a schematic diagram showing the connection between the boss and the cover plate on the mica plate of this utility model.

[0039] In the diagram: 1. Top cover; 12. Vacuum-formed top cover; 13. Mica top cover; 2. Tray; 21. Boss; 22. Elastic foam structure; 23. Boss groove; 3. Module. Detailed Implementation

[0040] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0041] In the description of this embodiment, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this embodiment 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 embodiment. Example 1

[0042] like Figure 1 As shown, this embodiment provides a tray cover fixing structure. It includes a tray 2 and a cover plate 1; the tray 2 is provided with a boss 21; the cover plate 1 is provided with a fitting structure that matches the boss 21.

[0043] Implementation principle: The boss 21 enables direct connection between the tray 2 and the top cover 1, fixing them to the module 3, eliminating the need for secondary rivet connections, improving efficiency, and reducing costs and risks. The tray 2 is preferably a blister tray. Example 2

[0044] This embodiment provides a tray cover fixing structure, which consists of a cover plate 1, a tray 2, and a battery module 3.

[0045] like Figure 1 As shown, the upper cover plate 1 is fixed together with the module 3 by the boss 21 on the tray 2. The function of the boss 21 is: the upper cover plate 1 has a through hole, which cooperates with the boss 21 on the tray 2 to fix the upper cover plate 1 on the module 3.

[0046] The top cover plate 1 is made of mica or other materials with a certain degree of hardness and thickness.

[0047] like Figure 2 and Figure 3 As shown, the boss 21 structure of the tray 2 provided by this utility model is highly compatible with the existing module 3 cover design, eliminates the need for rivets, has a simple manufacturing process, low cost, and is convenient and safe to use.

[0048] The pallet 2 is provided with a boss 21, which improves the strength of the pallet 2, reduces the punching process, greatly improves efficiency and reduces costs.

[0049] Preferred, such as Figure 4-5 As shown, the bottom of the boss 21 has a recessed structure circumferentially arranged on the plane of the tray 2. The recessed structure can prevent the upper cover plate 1 from not fitting properly due to the hot riveting post tie rod.

[0050] Preferably, the upper part of the boss 21 is provided with an annular protrusion; the shape of the annular protrusion matches the fitting structure.

[0051] Preferably, the boss 21 is provided with an elastic foam structure 22 below the annular protrusion; when the tray 2 is connected to the upper cover plate 1, the elastic foam structure 22 is compressed and then rebounds to abut against the upper cover plate 1.

[0052] The bottom of the boss 21 has a concave structure on the plane, and the upper part of the boss 21 has an annular protrusion. It can be softly fitted with the blister top cover 121 to form a fitting structure, and can be rigidly locked onto the mica top cover 131, so that the top cover 1 is locked onto the boss 21. At the same time, there is an elastic foam structure 22 under the annular protrusion. When the top cover 1 and the boss 21 are combined, the foam is compressed and rebounds to press against the top cover 1, so that the top cover 1 is firmly fixed on the tray boss 21, and is not easy to fall off or shake. This eliminates the need for secondary connection with rivets, improves efficiency, and reduces costs and risks.

[0053] Preferred, such as Figure 5 As shown, the upper cover plate 1 is a mica upper cover plate 131; the fitting structure includes a through hole with a diameter smaller than the outer diameter of the annular protrusion but larger than the lower diameter of the boss 21.

[0054] The annular protrusion can be directly locked onto the cover plate 131 on the mica plate.

[0055] Preferred, such as Figure 4 As shown, the upper cover plate 1 is a vacuum-formed upper cover plate 121, and the fitting structure includes an inner groove on the upper cover plate 1 that opens toward the boss 21, and the inner groove is provided with a cavity that matches the annular protrusion.

[0056] The annular protrusion and the hard mica upper cover plate 131 and the soft blister upper cover plate 121 can form a fitting structure, which is firmly fixed and easy to disassemble.

[0057] Preferably, the elastic foam structure 22 is in the shape of a ring below the annular protrusion of the boss 21 and wraps around the boss 21, so that the top cover can fit tightly together with the boss 21 when they are engaged.

[0058] The dimensions of the elastic foam structure 22 are adjusted according to the size of the boss 21.

[0059] The outer diameter of the foam structure is consistent with the annular protrusion of the boss 21. The inner diameter of the foam structure and the adhesive backing are tightly attached to the outer diameter of the boss 21. The height of the foam is 1 / 2 to 1 / 4 of the height of the boss 21, preferably 1 / 3. Preferably, the top of the annular protrusion has a chamfer angle of 35° to 45°, the height of the annular protrusion is 1 to 3 mm, and the outer diameter is 2 to 6 mm.

[0060] The height of the boss 21 is generally 3-10mm, preferably ≤5mm, and the annular protrusion accounts for about 1 / 3 of the height of the boss 21. Example 3

[0061] like Figure 1 As shown, this embodiment provides a battery module, including the tray cover fixing structure as described in Embodiment 2.

[0062] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature, and in the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0063] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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 according to the specific circumstances.

[0064] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0065] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0066] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention.

Claims

1. A tray cover fixing structure, characterized in that, Includes tray and top cover; The tray is provided with a boss; The upper cover plate is provided with a fitting structure that matches the boss.

2. The tray cover fixing structure according to claim 1, characterized in that, The bottom of the boss has a recessed structure circumferentially arranged on the tray plane.

3. The tray cover fixing structure according to claim 1, characterized in that, The upper part of the protrusion is provided with an annular protrusion; the shape of the annular protrusion matches the fitting structure.

4. The tray cover fixing structure according to claim 3, characterized in that, The boss has an elastic foam structure below the annular protrusion; when the tray is connected to the upper cover, the elastic foam structure is compressed and then rebounds to press against the upper cover.

5. The tray cover fixing structure according to claim 3, characterized in that, The upper cover plate is a mica upper cover plate; the fitting structure includes a through hole with a diameter smaller than the outer diameter of the annular protrusion but larger than the lower diameter of the boss.

6. The tray cover fixing structure according to claim 3, characterized in that, The upper cover is a thermoformed upper cover, and the fitting structure includes an inner groove on the upper cover facing the protrusion, and the inner groove has a cavity that matches the shape of the annular protrusion.

7. The tray cover fixing structure according to claim 4, characterized in that, The elastic foam structure is ring-shaped and wraps around the protrusion.

8. A battery module, characterized in that, Includes the tray cover fixing structure as described in any one of claims 1-7.

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