FFC welding spot protection structure for energy storage module

Abstract

The utility model discloses a flexible flat cable (FFC) welding spot protection structure for an energy storage module, which comprises a cover body, a printed circuit board (PCB) and an FFC belt body, the FFC belt body is connected with the PCB through a welding spot, the cover body covers the joint of the FFC belt body and the PCB, a concave part and a groove part are formed on the cover body, the concave part covers above the welding spot, and the groove part covers above the welding spot. Protective glue covering the welding spots is arranged in the concave part, the groove part is communicated between the concave part and the edge of the cover body, and the FFC belt body is clamped in the groove part. According to the utility model, the protection performance and the mechanical strength of the joint of the FFC belt body and the PCB can be improved.

Description

Technical Field

[0001] The utility model relates to an energy storage module, in particular to an FFC welding point protection structure for the energy storage module. Background Art

[0002] The PCB board of the energy storage module and the FFC strip body need to be electrically connected by welding. The solder joints at the connection between the FFC strip body and the PCB board are generally protected by direct gluing. This measure that relies solely on gluing for protection has the following main defects: First, the colloid is fluid before curing. During the gluing process, the colloid may overflow from the FFC solder joints, resulting in too little glue on the solder joints, a thin coverage thickness, and insufficient protection for the solder joints. In addition, the FFC strip body and the PCB board are fixed only by solder joints and gluing. The connection between the two is easily affected by external forces, resulting in open soldering, debonding, etc., and the connection reliability is insufficient. Utility Model Content

[0003] The technical problem to be solved by the present invention is to provide a protective structure that can improve the protection performance and stress strength of the connection between the FFC belt body and the PCB board in response to the shortcomings of the existing technology.

[0004] In order to solve the above technical problems, the present utility model adopts the following technical solutions.

[0005] A FFC solder joint protection structure for an energy storage module includes a cover, a PCB board, and an FFC strip. The FFC strip is connected to the PCB board via solder joints. The cover covers the connection between the FFC strip and the PCB board. A recessed portion and a groove are formed on the cover. The recessed portion covers the solder joints. Protective glue covering the solder joints is provided in the recessed portion. The groove communicates between the recessed portion and the edge of the cover. The FFC strip is clamped in the groove.

[0006] Preferably, the depth of the recessed portion is greater than the depth of the groove portion.

[0007] Preferably, an L-shaped edging portion is formed on an edge of one side of the cover away from the groove portion, and the edging portion wraps around the edge of the PCB board.

[0008] Preferably, the cover body is provided with a hole, a rivet is passed through the hole, and the cover body and the PCB board are fixedly connected via the rivet.

[0009] Preferably, at least two holes are formed on the cover.

[0010] Preferably, a limiting block is formed on the cover body, and the limiting block is engaged with a limiting hole preset on the PCB board.

[0011] Preferably, two limiting blocks are formed on the cover body, and the two limiting blocks are respectively arranged on the left and right sides of the groove portion.

[0012] Preferably, the recessed portion is rectangular.

[0013] In the FFC solder point protection structure for an energy storage module disclosed by the present invention, the FFC strip and the PCB are welded together through a plurality of solder points. Under the action of the plurality of solder points, the FFC strip and the PCB are fixedly connected and the transmission of electrical signals is realized. On this basis, the cover is covered on the connection between the FFC strip and the PCB, and the protective glue covering the solder points is accommodated inside the recessed portion on the cover. The recessed portion is used to limit the flow and overflow of the protective glue, so that the thickness of the protective glue covering the solder points is sufficient, further improving the protection performance of the solder points. At the same time, the FFC strip is clamped in the recessed portion on the cover. Because the recessed portion is connected between the recessed portion and the edge of the cover, the FFC strip can extend along the recessed portion to the outside of the cover. Under the clamping and limiting action of the recessed portion, the protection of the FFC strip is enhanced, and the force strength after the FFC strip is connected to the PCB is greater, thereby improving the product quality of the energy storage module. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Three-dimensional cover Figure 1 ;

[0015] Figure 2 Three-dimensional cover Figure 2 ;

[0016] Figure 3 This is a perspective view of the assembled cover, PCB board, and FFC strip;

[0017] Figure 4 This is a three-dimensional diagram of the assembled cover, PCB board and FFC belt. DETAILED DESCRIPTION

[0018] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments.

[0019] The utility model discloses an FFC welding point protection structure for energy storage module, combined with Figures 1 to 4As shown, it includes a cover body 1, a PCB board 2 and an FFC strip body 3. The FFC strip body 3 and the PCB board 2 are connected via a solder point 4. The cover body 1 covers the connection between the FFC strip body 3 and the PCB board 2. A recessed portion 10 and a groove portion 11 are formed on the cover body 1. The recessed portion 10 is arranged above the solder point 4. A protective glue covering the solder point 4 is provided in the recessed portion 10. The groove portion 11 is connected between the recessed portion 10 and the edge of the cover body 1, and the FFC strip body 3 is clamped in the groove portion 11.

[0020] In the above structure, the FFC belt body 3 and the PCB board 2 are welded through multiple solder points 4. Under the action of the multiple solder points 4, the FFC belt body 3 and the PCB board 2 can be fixedly connected and the transmission of electrical signals can be realized. On this basis, the cover body 1 is covered on the connection between the FFC belt body 3 and the PCB board 2, and the protective glue covering the solder points 4 is accommodated inside the recessed portion 10 on the cover body 1. The recessed portion 10 is used to limit the flow and overflow of the protective glue, so that the thickness of the protective glue covering the solder points 4 is sufficient. It is enough to further improve the protection performance of the solder joint 4. At the same time, the FFC strip 3 is clamped in the groove portion 11 on the cover body 1. Since the groove portion 11 is connected between the recessed portion 10 and the edge of the cover body 1, the FFC strip 3 can extend along the groove portion 11 to the outside of the cover body 1. Under the clamping and limiting action of the groove portion 11, the protection of the FFC strip 3 is enhanced, and the force strength after the FFC strip 3 is connected to the PCB board 2 is greater, thereby improving the product quality of the energy storage module.

[0021] As a preferred embodiment, the recessed portion 10 is rectangular, and the depth of the recessed portion 10 is greater than the depth of the groove portion 11. The deeper recessed portion 10 can accommodate more protective glue, ensuring that multiple solder joints 4 are covered with a sufficient thickness of protective glue. At the same time, the depth of the groove portion 11 is consistent with the thickness of the FFC strip 3, thereby pressing the FFC strip 3 tightly.

[0022] In order to make the cover 1 and the PCB board 2 match well, Figures 1 to 3 As shown, an L-shaped edge portion 12 is formed on one side of the cover 1 away from the groove portion 11, and the edge portion 12 wraps around the edge of the PCB board 2. Since the edge portion 12 is bent in an L-shape, it can well match the edge of the PCB board 2.

[0023] See Figure 1 and Figure 2To ensure that the recessed portion 10 is aligned with the solder joint 4 and the groove portion 11 is aligned with the FFC strip 3, in this embodiment, a limit block 15 is formed on the cover 1. The limit block 15 engages with a predetermined limit hole on the PCB board 2. Furthermore, two limit blocks 15 are formed on the cover 1, one on the left and one on the right side of the groove portion 11.

[0024] Based on the above limiting relationship, this embodiment preferably fixes the cover 1 to the PCB board 2. For details, see Figures 2 to 4 The cover body 1 is provided with a hole 13, and a rivet 14 is inserted into the hole 13. The cover body 1 and the PCB board 2 are fixedly connected via the rivet 14. Furthermore, the cover body 1 is provided with at least two holes 13, and each hole 13 is inserted into a rivet 14. It should be noted that in this embodiment, the rivets 14 are preferably used to fix the cover body 1 and the PCB board 2. In alternative embodiments of the present invention, screws can also be used to fix the cover body 1 and the PCB board 2, and these fixing methods all fall within the scope of protection of the present invention.

[0025] The FFC solder point protection structure for the energy storage module disclosed by the present invention can limit the flow of the protective glue under the action of the cover body 1, so that the protective glue can effectively cover and protect the solder points. At the same time, the cover body 1 can increase the stress strength after the FFC belt body 3 is connected to the PCB board 2, avoiding the occurrence of open soldering, debonding, etc. Therefore, the present invention has the technical effect of double protection.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements or improvements made within the technical scope of the present invention should be included in the scope of protection of the present invention.

Claims

1. An FFC solder joint protection structure for an energy storage module, characterized in that: The invention comprises a cover body (1), a PCB board (2) and an FFC strip body (3), wherein the FFC strip body (3) and the PCB board (2) are connected via a soldering point (4), the cover body (1) covers the connection between the FFC strip body (3) and the PCB board (2), a recessed portion (10) and a groove portion (11) are formed on the cover body (1), the recessed portion (10) is arranged above the soldering point (4), a protective glue covering the soldering point (4) is arranged in the recessed portion (10), the groove portion (11) is connected between the recessed portion (10) and the edge of the cover body (1), and the FFC strip body (3) is clamped in the groove portion (11).

2. The FFC solder joint protection structure for an energy storage module according to claim 1, wherein: The depth of the recessed portion (10) is greater than the depth of the groove portion (11).

3. The FFC solder joint protection structure for an energy storage module according to claim 1, wherein: An "L"-shaped edge portion (12) is formed on one side edge of the cover body (1) away from the groove portion (11), and the edge portion (12) is wrapped around the edge of the PCB board (2).

4. The FFC solder joint protection structure for an energy storage module according to claim 1, wherein: The cover body (1) is provided with a hole (13), a rivet (14) is inserted into the hole (13), and the cover body (1) and the PCB board (2) are fixedly connected via the rivet (14).

5. The FFC solder joint protection structure for an energy storage module according to claim 4, wherein: At least two holes (13) are formed on the cover body (1).

6. The FFC solder joint protection structure for an energy storage module according to claim 1, wherein: A limiting block (15) is formed on the cover body (1), and the limiting block (15) is engaged with a limiting hole preset on the PCB board (2).

7. The FFC solder joint protection structure for an energy storage module according to claim 6, wherein: Two limiting blocks (15) are formed on the cover body (1), and the two limiting blocks (15) are respectively arranged on the left and right sides of the groove portion (11).

8. The FFC solder joint protection structure for an energy storage module according to claim 1, wherein: The recessed portion (10) is rectangular.

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