Printed FPC (Flexible Printed Circuit) acquisition line

Abstract

A printing type FPC acquisition line comprises a bottom film, a printing wire, a top film and a plug-in plastic shell, the top film is attached to the bottom film, the printing wire is arranged on one surface, attached to the top film, of the bottom film and comprises a finger part and an acquisition part, the bottom film is provided with a lower bending part, the top film is provided with an upper bending part, the upper bending part covers one part of the lower bending part, and the plug-in plastic shell covers the finger part. The finger part is arranged on the lower bending part and located outside the coverage range of the upper bending part, and the upper bending part and the lower bending part are both fixed in the plug-in plastic shell; a contact surface is arranged on the finger part, and carbon powder is printed on the contact surface. According to the utility model, the bending part is arranged on the flexible FPC acquisition line, the finger part is folded according to the bending part and is inserted into the plug-in plastic shell, and meanwhile, the contact surface of the finger part is subjected to silk-screen carbon powder treatment, so that the conduction performance and the wear resistance of the finger part are improved, and the transmission stability of the FPC acquisition line is improved.

Description

Technical Field

[0001] The utility model relates to a printed FPC acquisition line, in particular to a printed FPC acquisition line. Background Art

[0002] With the rapid development of new energy modules, the industry has diversified the design of module acquisition lines. At present, the lead-out ends of some new energy vehicles in the industry are mostly connected with double-row plug-in plug-ins. For double-row plug-in flexible FPCs, the probes of the flexible FPCs need to be inserted into the two parallel rows of probe jacks in the upper and lower rows of the connector when plugging in. If two flexible FPCs are used for connection, it is easy for the two flexible FPCs to have poor contact, causing errors.

[0003] Therefore, there is a need for an FPC acquisition line with a double-row plug-in connector that has stable transmission. Utility Model Content

[0004] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the present invention is to design a printed FPC collection line to improve the stability of the power battery temperature collected by the aluminum busbar when the collection line transmits the temperature.

[0005] To achieve the above-mentioned purpose, the utility model provides a printed FPC collection line, comprising a base film, a printed conductor, a top film and a plug-in plastic shell, the top film is bonded to the base film, the printed conductor is arranged on a surface of the base film bonded to the top film, comprising a finger portion and a collection portion, the base film is provided with a lower bending portion, the top film is provided with an upper bending portion, the upper bending portion covers a portion of the lower bending portion, the finger portion is provided on the lower bending portion and is located outside the coverage range of the upper bending portion, the upper bending portion and the lower bending portion are both fixed to the inside of the plug-in plastic shell; the finger portion is provided with a contact surface, and the contact surface is printed with carbon powder.

[0006] Furthermore, a PI reinforcing plate is provided on the other surface of the base film, and the PI reinforcing plate is arranged opposite to the finger portion.

[0007] Furthermore, a plurality of nickel sheets are provided on both sides of the base film, and the contact area between the nickel sheets and the base film is smaller than the contact area between the nickel sheets and the aluminum bars, and the nickel sheets are connected to the printed conductors.

[0008] Furthermore, a plurality of temperature sensors are provided on the base film, and the temperature sensors are electrically connected to the printed conductors.

[0009] Furthermore, the plug-in plastic shell includes a plug-in plastic shell body and a limiting mechanism. Grooves are provided on both sides of the plug-in plastic shell body. The limiting mechanism is inserted into the grooves. The upper bending part and the lower bending part are both inserted into the plug-in plastic shell body and clamped by the limiting mechanism.

[0010] Furthermore, the top film and the bottom film are provided with corresponding positioning holes.

[0011] After adopting the above technical solution, the beneficial effect of the utility model is as follows: the printed FPC acquisition line of the utility model is provided with an upper bending portion and a lower bending portion on a flexible FPC acquisition line, and the finger portion is folded in half according to the upper bending portion and the lower bending portion, and inserted into the interior of the plug-in plastic shell, and at the same time, the contact surface of the finger portion is silk-screened with carbon powder, thereby increasing the conductivity and wear resistance of the finger portion and improving the transmission stability of the FPC acquisition line. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the disassembly of the printed FPC acquisition line involved in an embodiment of the present utility model;

[0013] Figure 2 This is a front view of a printed FPC acquisition line according to an embodiment of the present invention;

[0014] Figure 3 This is a schematic diagram of the back side of the printed FPC acquisition line involved in an embodiment of the present utility model;

[0015] Figure 4 This is a schematic diagram of the assembly of a printed FPC acquisition line according to an embodiment of the present utility model;

[0016] Figure 5 It is a partial schematic diagram of the printed FPC collection line involved in an embodiment of the present utility model.

[0017] The accompanying drawings are marked as follows: 1. top mold; 2. bottom film; 3. printed wire; 4. nickel sheet; 5. positioning hole; 6. plug-in plastic shell; 61. plug-in plastic shell body; 62. limiting mechanism; 7. PI reinforcement plate; 8. temperature sensor; 9. contact surface. DETAILED DESCRIPTION

[0018] The technical solution of the present invention is further described below by way of embodiments:

[0019] like Figures 1 to 5 As shown, the utility model provides a printed FPC collection line, including a bottom film 2, a printed conductor 3, a top film 1 and a plug-in plastic shell 6, the top film 1 is bonded to the bottom film 2, the printed conductor 3 is arranged on a surface of the bottom film 2 that is bonded to the top film 1, including a finger portion and a collection portion, the bottom film 2 is provided with a lower bending portion, the top film 1 is provided with an upper bending portion, the upper bending portion covers a part of the lower bending portion, and the finger portion is provided on the lower bending portion and is located outside the coverage range of the upper bending portion.

[0020] Furthermore, the plug-in plastic shell 6 includes a plug-in plastic shell body 61 and a limiting mechanism 62. Grooves are provided on both sides of the plug-in plastic shell body 61, and the limiting mechanism 62 is embedded in the grooves. The upper bending portion and the lower bending portion are both connected and fixed to the plug-in plastic shell body 61 and clamped by the limiting mechanism 62.

[0021] Specifically, the top film 1 and the bottom film 2 are provided with corresponding positioning holes 5 for assisting the alignment and welding of the bottom film 2 and the top film 1 .

[0022] Specifically, a contact surface 9 is provided on the finger portion, and the front surface of the contact surface 9 is processed with silk-screen carbon powder, which can increase the conductive performance and wear resistance of the contact surface 9.

[0023] Specifically, a PI reinforcing plate 7 is provided on the other surface of the base film 2 , and the PI reinforcing plate 7 is arranged opposite to the finger portion.

[0024] Specifically, a plurality of nickel sheets 4 are provided on both sides of the base film 2 , and the contact area between the nickel sheets 4 and the base film 2 is smaller than the contact area between the nickel sheets 4 and the aluminum bars. The nickel sheets 4 are connected to the printed conductors 3 .

[0025] Specifically, a plurality of temperature sensors 8 are provided on the base film 2 , and the temperature sensors 8 are electrically connected to the printed conductors 3 for detecting the temperature collected by the aluminum busbar.

[0026] More specifically, the connection between the printed conductor 3 and the nickel sheet 4 and the connection between the temperature sensor 8 and the nickel sheet 4 are both provided with tinned welding positions to increase the solderability of the nickel sheet 4 and the temperature sensor, as well as the adhesion on the printed conductor 3.

[0027] In actual manufacturing, printed conductors 3 are first transferred to a silk-screen screen through a film and ink exposure process. A layer of PET film is used as the base film 2. The base film 2, with its positioning holes 5, is then fixed to a screen printing machine. Silver paste is then transferred to the base film 2 through the screen printing process and cured. After curing, the top film 1 is aligned with the base film 2 through the positioning holes 5, and then laminated, hot-pressed, and nickel-plated on the surface to be soldered, completing the FPC body.

[0028] The contact surface 9 of the finger portion of the main body is then silk-screened with carbon powder to enhance its conductivity and wear resistance. A PI reinforcement plate 7 is attached to the other side of the base film 2, opposite the contact surface 9, for reinforcement. The nickel sheet 4 and temperature sensor 8 are then soldered to the reserved soldering positions using the SMT process, facilitating soldering to the aluminum busbar for conductivity and temperature collection. The finger portion is folded in half along the upper and lower bends, aligning the contact surface 9 with the holes in the insert housing 6. The finger is then inserted into the insert housing 6 and secured with the retaining mechanism 62 on the insert housing 6 to prevent loosening.

Claims

1. A printed FPC collection line, comprising a bottom film, printed conductors, a top film, and a plug-in plastic shell, wherein the top film is laminated to the bottom film, and is characterized in that: The printed conductor is arranged on a surface of the base film that is in contact with the top film, and includes a finger portion and a collecting portion. The base film is provided with a lower bending portion, and the top film is provided with an upper bending portion. The upper bending portion covers a portion of the lower bending portion. The finger portion is provided on the lower bending portion and is located outside the coverage range of the upper bending portion. The upper and lower bending portions are both fixed inside the plug-in plastic shell; the finger portion is provided with a contact surface, and the contact surface is printed with carbon powder.

2. The printed FPC acquisition line according to claim 1, characterized in that: A PI reinforcing plate is provided on the other surface of the base film, and the PI reinforcing plate is arranged opposite to the finger portion.

3. The printed FPC acquisition line according to claim 1, characterized in that: A plurality of nickel sheets are provided on both sides of the bottom film, and the contact area between the nickel sheets and the bottom film is smaller than the contact area between the nickel sheets and the aluminum bars, and the nickel sheets are connected to the printed conductors.

4. The printed FPC acquisition line according to claim 1, characterized in that: The base film is also provided with a plurality of temperature sensors, which are electrically connected to the printed conductors.

5. The printed FPC acquisition line according to claim 1, characterized in that: The plug-in plastic shell includes a plug-in plastic shell body and a limiting mechanism. Grooves are provided on both sides of the plug-in plastic shell body. The limiting mechanism is inserted into the grooves. The upper bending part and the lower bending part are both inserted into the plug-in plastic shell body and clamped by the limiting mechanism.

6. The printed FPC acquisition line according to claim 1, characterized in that: The top film and the bottom film are provided with positioning holes corresponding to each other.

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