A riveting type FPC battery tab connecting structure

Abstract

The utility model discloses a rivet pressure formula FPC battery pole lug connecting structure relates to battery technical field. The rivet pressure formula FPC battery pole lug connecting structure, including the protection colloid, the protection colloid inner bottom fixedly connected with the FPC board, the FPC board is away from the one side center of protection colloid and is provided with the corrugated groove, the FPC board center corresponds corrugated groove and is fixedly connected with the gold finger copper sheet, the gold finger copper sheet bottom is provided with the corrugated structure corresponding with the corrugated groove, the gold finger copper sheet is away from the one side fixedly connected with the pole lug of FPC board, the pole lug center is provided with the current conduction area. The rivet pressure formula FPC battery pole lug connecting structure can effectively resist the influence of external force, reduces the occurrence of the loose connection, and the gold finger copper sheet has good conductivity, which is tightly connected with the pole lug through the rivet claw, ensures the smoothness of the current conduction path, reduces the contact resistance, thereby improves the overall conductivity, and reduces the energy loss.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a riveted FPC battery tab connection structure. Background Technology

[0002] In the field of battery manufacturing, the connection structure between the tabs and the FPC (flexible printed circuit board) is a key factor affecting battery performance and lifespan. Traditional methods of connecting the tabs and FPCs often use welding or simple mechanical fastening structures, but these methods have many problems in practical applications.

[0003] While welding can ensure the conductivity of the connection to a certain extent, the welding process can generate high temperatures, which may damage the materials of the FPC board and the tabs, affecting their physical properties and chemical stability. At the same time, the welding quality is greatly affected by the operation process. If there are problems such as poor welding or missing welding, it will lead to increased contact resistance and poor current conduction. In severe cases, it may even cause safety hazards such as battery overheating and short circuits. Moreover, the welded connection structure has weak resistance to vibration and impact. During battery use, the weld joints are prone to detachment due to vibration or collision from the external environment, leading to connection failure.

[0004] When using a simple mechanical fastening structure, the contact area between the tab and the FPC board is small, the contact pressure is unstable, and poor contact is prone to occur, thus affecting the current conduction efficiency. Furthermore, this structure lacks effective protective measures, allowing external dust and moisture to easily enter the connection area, causing corrosion of the tab and FPC board, shortening the battery's lifespan. Additionally, traditional structures often lack buffering and shock absorption designs, making the connection area susceptible to stress concentration and damage under external impact, reducing battery reliability. To address these issues and improve the stability, conductivity, vibration and shock resistance, and protective performance of the tab-FPC board connection, developing a novel riveted FPC battery tab connection structure has become an urgent industry need. Utility Model Content

[0005] The purpose of this invention is to solve at least one of the technical problems existing in the prior art, and to provide a riveted FPC battery tab connection structure that can solve the above-mentioned problem.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a riveted FPC battery tab connection structure, including a protective colloid, an FPC board fixedly connected to the bottom of the protective colloid, a wavy groove provided at the center of the side of the FPC board away from the protective colloid, and a gold finger copper sheet fixedly connected to the center of the FPC board corresponding to the wavy groove.

[0007] The bottom of the gold finger copper sheet is provided with a wave-shaped structure corresponding to the wave-shaped groove. The side of the gold finger copper sheet away from the FPC board is fixedly connected to the electrode tab. The center of the electrode tab is provided with a current conduction area. The two sides of the upper surface of the electrode tab are fixedly connected to the connection terminal soldering area.

[0008] A connecting terminal is fixedly connected to the side of the welding area of ​​the connecting terminal away from the electrode tab. A guide post through hole is opened on the upper surface of the connecting terminal. Two guide post through holes are symmetrically arranged. The guide post through holes extend to the lower surface of the FPC board. A guide post is fixedly connected inside the guide post through hole.

[0009] There is a gap between the guide post and the guide post through hole. The upper end of the guide post is stepped. An upper limit stop is fixedly connected to the upper surface of the guide post. The upper limit stop is fixedly connected to the upper step part of the guide post. A lower limit stop is fixedly connected to the bottom of the guide post.

[0010] The upper surface of the lower limit block is in close contact with the lower surface of the FPC board. A buffer spring is fixedly connected between the upper and lower limit blocks around the guide post. A rivet claw is fixedly connected to the current conduction area of ​​the tab on the lower surface of the connection terminal. A snap barb is fixedly connected to the end of the rivet claw away from the connection terminal.

[0011] The copper sheet of the gold finger has a slot at the corresponding rivet claw, the slot extends through to the FPC board, and the rivet claw achieves current conduction with the FPC board and the copper sheet of the gold finger by engaging the barbs with the slot.

[0012] Preferably, the protective colloid is made of an insulating material.

[0013] Preferably, the wavy structure of the gold finger copper sheet fits tightly against the wavy groove of the FPC board.

[0014] Preferably, the guide post is made of metal.

[0015] Preferably, when the buffer spring is in its natural state, there is a gap between the upper limit stop and the upper surface of the connecting terminal.

[0016] Preferably, the number of rivet claws matches the number of slots.

[0017] Preferably, the snap-fit ​​barb is inclined, and the inclination direction is toward the side away from the center line of the rivet claw.

[0018] Preferably, the surface of the welding area of ​​the connection terminal is provided with an anti-oxidation coating.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] (1) The riveted FPC battery tab connection structure has a rivet claw that is tightly engaged with the slot by snapping barbs. Combined with the connection of the welding area of ​​the connection terminal, as well as the limiting effect of the guide post and the limiting block, the connection between the tab and the FPC board is very stable and can effectively resist the influence of external forces, reducing the occurrence of loose connection. The gold finger copper sheet has good conductivity and is tightly connected with the tab by the rivet claw, ensuring the smooth current conduction path, reducing contact resistance, thereby improving the overall conductivity and reducing energy loss.

[0021] (2) The riveted FPC battery tab connection structure has a buffer spring between the upper and lower limit blocks that can buffer when subjected to external impact, absorb part of the impact force, protect the connection structure from damage, and extend the service life of the connection structure. The riveted FPC battery tab connection structure has a protective colloid that wraps the internal FPC board, gold finger copper sheet and other key components, which can effectively isolate external dust, moisture and other harmful substances, prevent these substances from corroding or damaging the components, and ensure the normal working environment of the connection structure. The wavy groove and the wavy structure of the gold finger copper sheet are matched to increase the contact area and further improve the stability and conductivity of the connection. The symmetrical setting of the guide post through hole ensures the uniformity of the structure's stress. The overall structure design is compact and reasonable, and is easy to install and use. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0023] Figure 1 This is a schematic diagram of a riveted FPC battery tab connection structure according to the present invention;

[0024] Figure 2 This is a schematic diagram of a riveted FPC battery tab connection structure according to the present invention;

[0025] Figure 3 This is a schematic diagram of a riveted FPC battery tab connection structure according to the present invention;

[0026] Figure 4 This is a schematic diagram of a riveted FPC battery tab connection structure according to the present invention.

[0027] Reference numerals: 1. Protective colloid; 2. Electrode tab; 3. FPC board; 4. Connecting terminal soldering area; 5. Gold finger copper sheet; 6. Guide post; 7. Upper limit stop; 8. Lower limit stop; 9. Buffer spring; 10. Connecting terminal; 11. Wavy groove; 12. Slot; 13. Rivet claw; 14. Current conduction area; 15. Guide post through hole; 16. Snap-fit ​​barb. Detailed Implementation

[0028] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0029] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are 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.

[0030] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0031] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0032] Please see Figure 1-4 The present invention provides a technical solution: a riveted FPC battery tab connection structure includes a protective colloid 1, an FPC plate 3 is fixedly connected to the bottom of the protective colloid 1, and a wave-shaped groove 11 is provided on the side center of the FPC plate 3 away from the protective colloid 1.

[0033] The FPC board 3 has a gold finger copper sheet 5 fixedly connected to the wavy groove 11 at its center. The bottom of the gold finger copper sheet 5 has a wavy structure corresponding to the wavy groove 11.

[0034] A tab 2 is fixedly connected to the side of the gold finger copper sheet 5 away from the FPC board 3, and a current conduction area 14 is provided in the center of the tab 2;

[0035] The upper surface of the electrode 2 is fixedly connected to both sides of the connection terminal welding area 4, and the side of the connection terminal welding area 4 away from the electrode is fixedly connected to the connection terminal 10.

[0036] The upper surface of the connecting terminal 10 is provided with a guide post through hole 15. There are two guide post through holes 15 arranged symmetrically. The guide post through hole 15 extends to the lower surface of the FPC board 3. A guide post 6 is fixedly connected inside the guide post through hole 15. There is a gap between the guide post 6 and the guide post through hole.

[0037] The upper end of the guide post 6 is stepped, and an upper limit stop 7 is fixedly connected to the upper surface of the guide post 6. The upper limit stop 7 is fixedly connected to the upper stepped part of the guide post 6.

[0038] A lower limit block 8 is fixedly connected to the bottom of the guide column 6, and the upper surface of the lower limit block 8 is in close contact with the lower surface of the FPC board.

[0039] A buffer spring 9 is fixedly connected between the upper and lower limit blocks around the guide post 6;

[0040] A rivet 13 is fixedly connected to the current conduction area 14 corresponding to the tab 2 on the lower surface of the connecting terminal 10. A snap barb 16 is fixedly connected to the end of the rivet 13 away from the connecting terminal.

[0041] The gold finger copper sheet has five pairs of rivet claws 13 with slots 12, which extend to the FPC board 3;

[0042] The rivet 13 achieves current conduction with the FPC board 3 and the gold finger copper plate 8 by engaging the barb 16 and the slot 12.

[0043] Working principle: The riveted FPC battery tab 2 connection structure achieves stable current conduction and structural fixation through the coordinated action of multiple components. In terms of current conduction, the current conduction area 14 of the tab 2 corresponds to the rivet 13 on the lower surface of the connection terminal 10. The rivet 13 is engaged with the gold finger copper sheet 5 and the slot 12 on the FPC board by snapping barbs 17, forming a tight physical connection. This allows the current to be transmitted to the FPC board 3 in sequence through the tab 2, rivet 13, and gold finger copper sheet 5, completing the current conduction process. In terms of structural fixation and buffering, the guide post 6 passes through the guide post through hole 6. Its upper stepped structure is fixed with the upper limit stop 7, and the lower limit stop 8 is tightly attached to the lower surface of the FPC board 3. The buffer spring 9 between the upper and lower limit stops 8 is fixed around the guide post 6. This structure plays a limiting and buffering role for the entire connection component. When subjected to external impact, the buffer spring 9 can absorb part of the impact force and reduce damage to the connection structure. Meanwhile, the snap-fit ​​between the rivet 13 and the slot 12, as well as the connection of the welding area 4 of the connecting terminal 10, further enhances the stability of the overall structure and ensures that the connection between the tab 2 and the FPC board 3 is firm and reliable.

[0044] In addition, the protective colloid 1 protects the internal FPC board 3, gold finger copper sheet 5 and other components, preventing damage from the external environment and ensuring the normal operation of the connection structure;

[0045] The rivet 13 is tightly engaged with the slot 12 by snapping the barb 17. Combined with the connection of the welding area 4 of the connection terminal 10, and the limiting effect of the guide post 6 and the limit block, the connection between the tab 2 and the FPC board 3 is very stable, which can effectively resist the influence of external forces and reduce the occurrence of loose connection.

[0046] The gold finger copper sheet 5 has good conductivity. It is tightly connected to the electrode 2 through the rivet 13, which ensures the smooth current conduction path, reduces contact resistance, thereby improving the overall conductivity and reducing energy loss.

[0047] The buffer spring 9 between the upper and lower limit blocks 8 can buffer the impact when subjected to external force, absorb part of the impact force, protect the connection structure from damage, and extend the service life of the connection structure.

[0048] The protective colloid 1 wraps around key components such as the internal FPC board 3 and gold finger copper sheet 5, effectively isolating external dust, moisture and other harmful substances, preventing these substances from corroding or damaging the components, and ensuring the normal working environment of the connection structure.

[0049] The wavy groove 11, in conjunction with the wavy structure of the gold finger copper sheet 5, increases the contact area and further improves the stability and conductivity of the connection; the symmetrical arrangement of the guide post through holes 6 ensures the uniformity of the structural stress, and the overall structural design is compact, reasonable, and easy to install and use.

[0050] Structural Description:

[0051] Protective colloid 1: As the external protective component of the entire connection structure, it internally wraps key components such as FPC board 3 and gold finger copper sheet 5.

[0052] Tab 2: It is fixedly connected to the side of the gold finger copper sheet 5 away from the FPC board 3, and a current conduction area 14 is provided in the center. The upper surface has connection terminal soldering areas 4 fixedly connected to both sides.

[0053] FPC board 3: It is fixedly connected to the bottom of the protective colloid 1. A wavy groove 11 is provided in the center of the side away from the protective colloid 1. A gold finger copper sheet 5 is fixedly connected to the center of the wavy groove 11. It also has a structure that communicates with the slot 12 on the gold finger copper sheet 5. A guide post through hole 15 is also provided for the guide post 6 to pass through.

[0054] Connection terminal welding area 4: It is fixedly connected to both sides of the upper surface of the electrode tab 2, and the other side is fixedly connected to the connection terminal 10.

[0055] Gold finger copper sheet 5: It is fixedly connected to the center of the FPC board 3 at the position corresponding to the wavy groove 11. The bottom is provided with a wavy structure corresponding to the wavy groove 11. A slot 12 is opened at the corresponding rivet 13 and the slot 12 extends through to the FPC board 3.

[0056] Guide post 6: It is fixedly connected inside the guide post through hole 15, and there is a gap between it and the guide post through hole. The upper end is set in a stepped shape, and the upper surface is fixedly connected with an upper limit stop 7, and the bottom is fixedly connected with a lower limit stop 8.

[0057] Upper limit stop 7: It is fixedly connected to the upper surface of the guide post 6 and to the upper step of the guide post 6.

[0058] Lower limit stop 8: Fixedly connected to the bottom of guide post 6, with its upper surface tightly attached to the lower surface of FPC board.

[0059] Buffer spring 9: It is fixedly connected between the upper and lower limit blocks around the guide post 6.

[0060] Connection terminal 10: It is fixedly connected to the electrode 2 through the connection terminal welding area 4. Two symmetrically arranged guide post through holes 15 are opened on the upper surface, and the rivet claw 13 is fixedly connected to the current conduction area 14 of the electrode 2 on the lower surface.

[0061] Wavy groove 11: It is set in the center of the side of the FPC board 3 away from the protective colloid 1, corresponding to the wavy structure at the bottom of the gold finger copper sheet 5.

[0062] Slot 12: It is located at the rivet 13 corresponding to the gold finger copper sheet 5 and extends through to the FPC board 3.

[0063] Rivet 13: It is fixedly connected to the current conduction area 14 of the tab 2 on the lower surface of the connecting terminal 10, and the end away from the connecting terminal is fixedly connected with a snap barb 16.

[0064] Current conduction area 14: located at the center of the tab 2, corresponding to the rivet 13 on the lower surface of the connecting terminal 10.

[0065] Guide post through hole 15: It is opened on the upper surface of the connection terminal 10, and there are two symmetrically arranged. It extends to the lower surface of the FPC board 3, and a guide post 6 is fixedly connected inside.

[0066] Snap-fit ​​barb 16: Securely connected to the end of the rivet 13 away from the connecting terminal.

[0067] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A riveted FPC battery tab connection structure, comprising a protective colloid (1), characterized in that: An FPC board (3) is fixedly connected to the bottom of the protective colloid (1). A wavy groove (11) is provided at the center of the side of the FPC board (3) away from the protective colloid (1). A gold finger copper sheet (5) is fixedly connected to the center of the FPC board (3) corresponding to the wavy groove (11). The bottom of the gold finger copper sheet (5) is provided with a wave-shaped structure corresponding to the wave-shaped groove (11). The gold finger copper sheet (5) is fixedly connected to a tab (2) on the side away from the FPC board (3). The center of the tab (2) is provided with a current conduction area (14). The upper surface of the tab (2) is fixedly connected to the two sides of the connection terminal welding area (4). The welding area (4) of the connection terminal is fixedly connected to the side away from the electrode tab. The upper surface of the connection terminal (10) is provided with a guide post through hole (15). There are two guide post through holes (15) arranged symmetrically. The guide post through holes (15) extend to the lower surface of the FPC board (3). A guide post (6) is fixedly connected inside the guide post through hole (15).

2. The riveted FPC battery tab connection structure according to claim 1, characterized in that: There is a gap between the guide post (6) and the guide post through hole. The upper end of the guide post (6) is set in a stepped shape. An upper limit stop block (7) is fixedly connected to the upper surface of the guide post (6). The upper limit stop block (7) is fixedly connected to the upper step part of the guide post (6). A lower limit stop block (8) is fixedly connected to the bottom of the guide post (6).

3. The riveted FPC battery tab connection structure according to claim 2, characterized in that: The upper surface of the lower limit stop (8) is in close contact with the lower surface of the FPC board. A buffer spring (9) is fixedly connected between the upper and lower limit stops around the guide post (6). A rivet claw (13) is fixedly connected to the current conduction area (14) of the tab (2) on the lower surface of the connection terminal (10). A snap barb (16) is fixedly connected to the end of the rivet claw (13) away from the connection terminal.

4. The riveted FPC battery tab connection structure according to claim 3, characterized in that: The gold finger copper sheet (5) has a slot (12) at the corresponding rivet (13), the slot (12) extends through to the FPC board (3), and the rivet (13) achieves current conduction with the FPC board (3) and the gold finger copper sheet (5) by engaging the barb (16) with the slot (12).

5. The riveted FPC battery tab connection structure according to claim 4, characterized in that: The wavy structure of the gold finger copper sheet (5) fits tightly against the wavy groove (11) of the FPC board (3).

6. The riveted FPC battery tab connection structure according to claim 5, characterized in that: When the buffer spring (9) is in its natural state, there is a gap between the upper limit stop (7) and the upper surface of the connecting terminal (10).

7. The riveted FPC battery tab connection structure according to claim 6, characterized in that: The snap barb (16) is inclined, and the inclination direction is toward the side away from the center line of the rivet (13).

8. The riveted FPC battery tab connection structure according to claim 7, characterized in that: The number of rivets (13) matches the number of slots (12).

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