Tab bracket protection cover and tab bracket

Abstract

The utility model discloses a tab support protective cover, which comprises a plurality of bosses, a limiting column and a through hole, the limiting column is positioned at the bending part of an FPC (Flexible Printed Circuit), each FPC is provided with three NTC (Negative Temperature Coefficient), the limiting column comprises a main body and a base, and the main body is fixed on the base; the boss is matched with a bent tab of the battery cell; the through holes are formed between any two limiting columns. According to the utility model, an isolating layer is abandoned, and a plastic protective cover is adopted, so that the safety of the tab bracket is better guaranteed, and meanwhile, an excessively complicated reinforcing body structure is not designed, so that the overall burden of the module is reduced, and the lightweight requirement of modern automobiles is met. According to the utility model, the FPC temperature sensing limiting columns are designed, the limiting mechanism is added, and the displacement of the three NTC of the FPC is limited by the protective cover limiting columns, so that the NTC contacts are prevented from moving due to vibration when the module is used, and the temperature sensing data are not interfered by the displacement.

Description

Technical Field

[0001] The utility model relates to the technical field of tab support protection, in particular to a tab support protection cover and a tab support. Background Art

[0002] There are few protection covers for existing tab supports. Inserts are designed on the support to be directly connected to the upper cover, or a simple protection plate is designed. For example, in the patent document with the publication number: CN210182507U, the invention name is an integrated liquid-cooled power battery module, and the publication date is March 24, 2020. There is no protection device or only a layer of protective film is designed between the tab support and the upper cover, and the protection strength is lacking; the tab support protection cover is too simple and has no limiting structure, and the temperature probe cannot be completely fixed, affecting the temperature sensing data. Summary of the Invention

[0003] Object of the Invention: The object of the utility model is to provide a tab support protection cover and a tab support that can fix the FPC and protect the temperature sensing data from displacement interference.

[0004] Technical Solution: To achieve the above object of the invention, a tab support protection cover of the utility model comprises a plurality of bosses, limiting columns and through holes.

[0005] The limiting columns are located at the bending positions of the FPC. Each FPC is provided with three NTCS. The limiting column comprises a main body and a base, and the main body is fixed on the base.

[0006] The bosses are matched with the bent tabs of the battery cell.

[0007] The through holes are arranged between any two limiting columns.

[0008] Furthermore, a plurality of buckles are provided, and the buckles are located around the tab support protection cover.

[0009] Furthermore, the bosses are circular, rectangular or square.

[0010] Furthermore, the size of the through holes is similar to the diameter of the connecting cables.

[0011] Furthermore, the limiting columns are limiting devices made of flexible or elastic materials.

[0012] Furthermore, the base is a hollow triangular prism.

[0013] Even further, the main body is injection-molded with one side of the triangular prism.

[0014] Even further, the main body is a hollow cylindrical structure, and the diameter of the cylinder is less than or equal to the size of one side of the triangular prism.

[0015] Furthermore, the tab support cover is a cover made of polypropylene material.

[0016] A tab support, and the tab support cooperates with the tab support cover.

[0017] FPC: Flexible Printed Circuit, abbreviated as flexible printed circuit board, is a highly reliable and excellent flexible printed circuit board made of polyimide or polyester film as the base material. It has the characteristics of high wiring density, light weight, thin thickness, and good bendability.

[0018] NTC (Negative Temperature Coefficient) is the abbreviation of negative temperature coefficient, and usually refers to a negative temperature coefficient thermistor.

[0019] Beneficial effects: The utility model abandons the isolation layer and uses the form of a plastic protection cover to make the safety of the tab support more guaranteed. At the same time, it does not design a too complex reinforcement structure, reducing the overall weight of the module and meeting the requirements of contemporary automotive lightweighting.

[0020] The tab support cover of the utility model is designed with FPC temperature sensing limit posts to increase the limiting mechanism. The three NTCs of the FPC are restricted in displacement by the limit posts of the protection cover, preventing the NTC contacts from moving during the vibration of the module in use, making the temperature sensing data not interfered by displacement, and at the same time extending its service life. Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram of the protection cover of the utility model;

[0022] Figure 2 It is a partial enlarged view of the limit post. Detailed Embodiment

[0023] As Figure 1 and Figure 2 shown, a tab support cover includes a plurality of bosses 1, limit posts 2, and through holes 3.

[0024] The limit posts 2 are located at the bending positions of the FPC 4. Each FPC 4 is provided with three NTCs 5. The limit posts 2 include a main body 21 and a base 22. The main body 21 is fixed on the base 22. The base 22 is a hollow triangular prism. The main body 21 is injection-molded with one side of the triangular prism. The main body 21 is a hollow cylindrical structure, and the diameter of the cylinder is less than or equal to the size of one side of the triangular prism. The limit posts 2 are limiting devices made of flexible or elastic materials. The hollow structure is set to reduce the overall weight of the package, meet the lightweight requirements, and save costs.

[0025] The through hole 3 is provided between any two limiting posts 2. The size of the through hole 3 is similar to the diameter of the connecting cable. As a preferred embodiment of the present utility model, the protective cover is provided with one through hole 3, one through hole 3 and three limiting posts 2. The FPC 4 is connected to the BMS board through the through hole 3. The displacements of the three NTCs 5 of the FPC 4 are restricted by the limiting posts 2 of the protective cover, preventing the NTC 5 contacts from vibrating and moving during the use of the module; the three limiting posts 2 extend into the bent portions of the temperature sensing points of the FPC 4, playing a role in restricting displacement, so that the positions of the NTCs 5 do not shift during the use of the module, and the measured data is more accurate; while designing the temperature sensing point limit, the tab bending limit is also designed to prevent the tabs from warping, increasing the stability of the tab bending and the temperature sensing points of the FPC 4, and effectively protecting the tab bracket.

[0026] The boss 1 cooperates with the bent tab of the battery cell. The boss 1 is circular, rectangular or square. As a preferred embodiment of the present utility model, the boss 1 is set to be circular. As a preferred embodiment of the present utility model, three limiting bosses 1 are provided on the protective cover in different orientations, playing a role in preventing the bent tab of the battery cell from warping upwards.

[0027] A number of buckles 6 are also provided. The buckles 6 are located around the protective cover of the tab bracket. As a preferred embodiment of the present utility model, five protruding buckles 6 are designed on the protective cover, which are buckled on the end part and the left and right sides of the tab bracket part, and cooperate with the recess at the end part to be clamped, realizing the assembly, and the structure is simple.

[0028] The protective cover of the tab bracket is a protective cover made of polypropylene material. The whole protective cover is made of polypropylene material, with simple structural features, and is formed by injection molding. The mold cavity can be selected as one cavity with two chambers or one cavity with multiple chambers.

[0029] As another preferred embodiment of the present utility model, a tab bracket is provided, and the tab bracket cooperates with the protective cover of the tab bracket.

[0030] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A tab support protective cover, characterized in that: It includes several bosses, limiting columns and through holes. The limiting column is located at the bending part of the FPC, each FPC is provided with three NTCs, and the limiting column comprises a main body and a base, and the main body is fixed on the base; The boss matches with the bent pole ear of the battery cell; The through hole is arranged between any two limiting columns.

2. The tab support protective cover according to claim 1, characterized in that: A plurality of buckles are also provided, and the buckles are located around the tab bracket protection cover.

3. The tab support protective cover according to claim 1, characterized in that: The boss is circular or rectangular.

4. The tab support protective cover according to claim 1, characterized in that: The size of the through hole is similar to the diameter of the connecting cable.

5. The tab support protective cover according to claim 1, characterized in that: The limiting column is a limiting device made of flexible or elastic material.

6. The tab support protective cover according to claim 1, characterized in that: The base is in the shape of a hollow triangular prism.

7. The tab support protective cover according to claim 6, characterized in that: The main body and one side of the triangular prism are formed by injection molding.

8. The tab support protective cover according to claim 7, characterized in that: The main body is a hollow columnar structure, and the diameter of the column is less than or equal to the size of one side of the triangular prism.

9. The tab support protective cover according to claim 1, characterized in that: The tab support protection cover is a protection cover made of polypropylene material.

10. A tab support, characterized in that: The tab support cooperates with the tab support protection cover as described in any one of claims 1 to 9.

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