Connection structure of FFC signal acquisition branch

Abstract

The utility model discloses a connecting structure of an FFC signal acquisition branch, which comprises an FFC main body, an FFC branch and a connecting piece, and the connecting piece realizes fixed contact between the FFC main body and a conductive part of the FFC branch. The connecting piece comprises a plane end part and a puncture part on one end face of the plane end part, the puncture part is bent after penetrating through the FFC branch, and the bent part of the puncture part and the plane end part fixedly connect the peeled wire of the FFC main body with the FFC branch. According to the utility model, the problems of poor welding, welding failure, high processing difficulty, high energy consumption, low efficiency, incapability of detecting welding quality and the like when the FFC main body and the FFC branch are welded in the prior art are solved, the design scheme of piercing the rivet buckle is adopted, the product precision is high, the yield is high, and the performance is stable and more durable; the pressure during crimping and the appearance, height and position after crimping can be monitored on line, and recorded data can be traced; according to the design scheme, automatic feeding can be achieved, and production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a vehicle integrated busbar CCS, in particular to a connection structure of an FFC signal collection branch. Background Art

[0002] The FFC branch 2 of the FFC main body 1 signal acquisition end of the vehicle integrated busbar CCS, such as Figure 1 As shown, the pad at the end of the FFC branch 2 needs to be electrically connected to the wire of the FFC body 1. The conventional method is to connect the FFC body 1 and the connection area 3 corresponding to the FFC branch 2 by welding to form a welding area 4, such as Figure 2 As shown, this method has the following disadvantages during welding:

[0003] 1. The single wire on the FFC body is thin, and the FFC pad is small. The amount of tinning cannot be accurately controlled during tinning. After the equipment heats and melts the tin, the welding state of the FFC body and the FFC branch is difficult to control, and defects such as tin accumulation, welding slag, welding offset, cold soldering and welding slag around the solder joints may occur, affecting the electrical performance.

[0004] 2. When welding the FFC body and the FFC branch, the heating temperature needs to be controlled. Affected by the operating environment and operating methods, there is a high possibility of cold soldering, and the solder is wrapped between the FFC body and the FFC branch. The welding status cannot be detected from the appearance. If there is a cold soldering, it may cause poor conduction of the CCS, affect the electrical performance, and cause abnormal use of the product or even scrap it.

[0005] 3. The temperature at the soldering point is high during soldering, the soldering accuracy is difficult to control, and the insulating film around the pad is easily melted, which is very likely to cause a short circuit, resulting in irreversible consequences.

[0006] 4. The equipment required for the soldering process consumes a lot of energy and requires precise debugging and monitoring of data during the entire working period. While consuming energy, it also wastes more manpower and other resources. Utility Model Content

[0007] The purpose of the utility model is to provide a connection structure for FFC signal acquisition branches to solve the problems of poor welding, welding failure, great processing difficulty, high energy consumption, low efficiency, and inability to detect welding quality that are prone to occur when welding the FFC main body and the FFC branch in the prior art, so as to improve product quality and production capacity and provide customers with higher quality products.

[0008] The technical solution of the utility model is:

[0009] A connection structure of an FFC signal acquisition branch comprises an FFC body and an FFC branch. The connection structure further comprises a connector, which realizes fixed contact between the FFC body and the conductive part of the FFC branch.

[0010] Preferably, the connector includes a planar end and a puncture portion on one end surface thereof, the puncture portion pierces the FFC branch and then bends, and the bent portion of the puncture portion and the planar end fixedly connect the stripped wire of the FFC body to the FFC branch.

[0011] Preferably, the connector adopts a piercing rivet buckle, and the piercing portion of the piercing rivet buckle includes at least one sawtooth, and the sawtooth is bent after piercing the FFC branch to form the other end face.

[0012] Preferably, the serrations on the piercing rivet buckle are arranged in two rows on the plane end, and the gaps between one row of serrations and the other row of serrations are staggered and opposite.

[0013] Preferably, the two rows of serrations on the piercing rivet buckle are bent toward each other after piercing through the FFC branch.

[0014] Preferably, a reinforcing protrusion is provided on the plane end between the two rows of serrations on the piercing rivet buckle to strengthen the contact strength between the FFC main body and the FFC branch conductive part.

[0015] The connecting piece is a nail, and the nail pierces the FFC main body and the FFC branch and then bends the piercing end of the nail.

[0016] Preferably, the FFC branch is replaced by an FPC branch or an FDC branch.

[0017] The advantages of the utility model are:

[0018] 1. The FFC main body and FFC branch connection structure of the utility model has a puncture part that pierces the FFC branch and then bends. The bent part and the flat end of the puncture part fix the peeled wire of the FFC main body and the FFC branch in the middle. The product has high precision, high yield, stable performance and is more durable.

[0019] 2. The design of the utility model has high stability and can monitor the pressure during crimping, the appearance, height and position after crimping online, and can trace the collected data;

[0020] 3. The design of the utility model can realize automatic loading and improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0022] Figure 1 It is a connection diagram of the corresponding connection points between the FFC main body and the FFC branch;

[0023] Figure 2 This is a schematic diagram of welding between the FFC main body and the FFC branch;

[0024] Figure 3 This is a schematic diagram of the structure of the piercing rivet button in the embodiment of the utility model;

[0025] Figure 4 This is a schematic diagram of the structure in which the FFC main body and the FFC branch are connected by piercing rivets in an embodiment of the utility model;

[0026] Figure 5 This is a schematic diagram of the integrated busbar CCS connection in an embodiment of the utility model. DETAILED DESCRIPTION

[0027] The utility model proposes a connection structure of an FFC signal acquisition branch, including an FFC body 1 and an FFC branch 2, and the connection structure also includes a connector, which realizes fixed contact between the conductive parts of the FFC body 1 and the FFC branch 3. The connector includes a plane end 11 and a puncture part on one end surface thereof, the puncture part pierces the FFC branch and then bends, and the bent part and the plane end of the puncture part fixedly connect the stripped wire of the FFC body 1 with the FFC branch 2.

[0028] like Figure 3 As shown, the connector of this embodiment adopts a piercing rivet buckle 10, and the piercing rivet buckle 10 includes a plane end portion 11, and the plane end portion 11 is provided with at least one sawtooth 12. The sawtooth 12 on the piercing rivet buckle 10 of this embodiment is arranged in two rows, and the gaps between the sawtooth in one row and the sawtooth in the other row are staggered and opposite.

[0029] like Figure 4 As shown, after the two rows of saw teeth penetrate the FFC body 1 and the FFC branch 2, they are bent oppositely to form another end face, which is referred to as the clamping face 14. The plane end 11 and the clamping face 14 clamp the FFC body 1 and the FFC branch 2 in the middle, wherein the wire of the FFC body 1 is peeled and exposed at the crimping part. A reinforcing protrusion 13 is provided on the plane end 11 between the two rows of saw teeth on the piercing rivet 10 to strengthen the contact strength between the pad at the end of the FFC branch 2 and the wire of the FFC body 1.

[0030] The FFC main body 1 and the FFC branch 2 fixed by piercing the rivet buckle 10 have at least one side of the connection covered with an insulating protective film, with the clamping surface 14 being preferentially covered.

[0031] In another embodiment, the connecting member is a nail, and after the nail penetrates the FFC body and the FFC branch, the piercing end of the nail is flattened.

[0032] The present invention may also adopt other connection structures, as long as the FFC body 1 and the FFC branch 2 are penetrated during the connection process, the soldering pad at the end of the FFC branch 2 is in contact with the wire of the FFC body 1, and the FFC body 1 and the FFC branch 2 are fixed.

[0033] In another embodiment, the FFC branch is replaced by an FPC branch or an FDC branch.

[0034] Another embodiment provides a method for connecting a connection structure of an FFC signal acquisition branch, including:

[0035] S1. At the connection between the FFC main body 1 and the FFC branch 2, the wire of the FFC main body 1 is peeled and exposed; by using a crimping device to apply force to the piercing rivet 10 to pierce the film and the pad of the FFC branch, the wire of the FFC main body 1 is in contact with the pad of the FFC branch 2;

[0036] S2. Use the upper and lower molds to press the saw teeth 12 of the pierced rivet buckle 10 at the same time, and the bent saw teeth 12 are alternately sandwiched to form a sandwich surface 14, which completely fixes the connection between the FFC main body 1 and the FFC branch 2 with the flat end 11 of the pierced rivet buckle 10;

[0037] S3. Finally, at least one side of the connection between the fixed FFC main body 1 and the FFC branch 2 is covered with an insulating protective film by heating and pressing.

[0038] In another embodiment, the connection structure of the FFC signal collection branch of the utility model is used for a vehicle integrated busbar CCS, such as Figure 5 As shown, the FFC body 1 is connected to each battery cell 5 of the power battery through the FFC branch 2, realizing high-voltage series and parallel connection of the battery cells 5, as well as battery temperature sampling and battery cell voltage sampling functions, and providing temperature and voltage to the BMS system through the FFC branch 2.

[0039] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any modifications made according to the spirit of the main technical solution of the utility model should be included in the protection scope of the utility model.

Claims

1. A connection structure of an FFC signal collection branch, comprising an FFC main body and an FFC branch, It is characterized in that The connection structure also includes a connector, which enables the FFC body to be fixedly contacted with the FFC branch conductive part; The connector includes a plane end and a puncture portion on one end surface thereof. The puncture portion pierces through the FFC branch and then bends. The bent portion of the puncture portion and the plane end fixedly connect the stripped wire of the FFC body with the FFC branch.

2. The connection structure of the FFC signal acquisition branch according to claim 1, It is characterized in that The connector adopts a piercing rivet buckle, and the piercing portion of the piercing rivet buckle includes at least one sawtooth. The sawtooth pierces the FFC branch and then bends to form the other end face.

3. The connection structure of the FFC signal acquisition branch according to claim 2, It is characterized in that The saw teeth on the piercing rivet buckle are arranged in two rows on the plane end, and the gaps between the saw teeth in one row and the saw teeth in the other row are staggered and opposite.

4. The connection structure of the FFC signal acquisition branch according to claim 3, It is characterized in that After the two rows of saw teeth on the piercing rivet pierce through the FFC branch, they are bent in opposite directions.

5. The connection structure of the FFC signal acquisition branch according to claim 4, It is characterized in that A reinforcing protrusion is provided on the plane end between the two rows of saw teeth on the piercing rivet buckle to strengthen the contact strength between the FFC main body and the FFC branch conductive part.

6. The connection structure of the FFC signal acquisition branch according to claim 1, It is characterized in that The connecting piece is a nail, and the nail pierces the FFC main body and the FFC branch and then bends the piercing end of the nail.

7. The connection structure of the FFC signal acquisition branch according to any one of claims 1 to 6, It is characterized in that The FFC branch is replaced by an FPC branch or an FDC branch.

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