CN218004983U

CN218004983U - FFC sampling branch folding-free assembly

Info

Publication number: CN218004983U
Application number: CN202122019587.9U
Authority: CN
Inventors: 刘学文
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2021-08-25
Filing date: 2021-08-25
Publication date: 2022-12-09
Anticipated expiration: 2031-08-25

Abstract

The utility model relates to a battery data sampling technical field, concretely relates to FFC sampling branch exempts from folding assembly. The FFC sampling branch fold-free assembly comprises: the conductive bar is provided with a conductive bar extending part which is formed by extending partial area of the conductive bar out of the conductive bar; the FFC is provided with an FFC sampling branch suitable for being in lap joint with the conductive bar extending part, and the FFC sampling branch extends along the length direction of the FFC. The utility model provides a folding assembly is exempted from in FFC sampling branch, through setting up the electrically conductive extension portion of arranging, the FFC sampling branch that realizes extending along FFC's length direction need not to fold can with electrically conductive extension portion overlap joint, avoided the branching folding fatigue fracture of FFC sampling and the sampling inefficacy risk that causes, and simultaneously, the uniformity of product has been guaranteed, the defective rate has been reduced, be favorable to improving production efficiency, thereby a folding assembly is exempted from in the branching of FFC sampling that is difficult for fatigue fracture inefficacy and production efficiency is high is provided.

Description

FFC sampling branch folding-free assembly

Technical Field

The utility model relates to a battery data sampling technical field, concretely relates to FFC sampling branch exempts from folding assembly.

Background

In recent years, the new energy automobile industry has been developed rapidly, power battery provides the part as new energy automobile's power, its temperature, voltage signal need pay close attention to constantly, traditional power battery module adopts the pencil to gather the temperature and the voltage signal of the inside battery of module mostly, rethread battery management system real time monitoring, manage and adjust battery running state, however, the collection pencil that uses is walked the line complicacy usually, make the assembly process of module complicated thereupon, occupy a large amount of spaces in the module, increase the weight of module. In order to solve the problems, a sampling wire harness can be replaced by an FPC (Flexible Printed Circuit) or an FFC (Flexible Flat Cable), wherein the cost of FFC sampling is lower than that of FPC sampling, and can be reduced by about 50%, however, in practical application, the FFC sampling has a plurality of sampling branches, each sampling branch needs to be folded when being connected and fixed with a battery, if the fixing is unreliable, and when the fixing is invalid, the folding area of the FFC is easy to generate fatigue fracture under the condition of long-time vibration, so that the sampling is invalid, and further the battery module can not be normally used; and each branch wiring harness of the FFC needs to be folded, so that the working efficiency is low, and the labor cost is high.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming among the prior art FFC sampling branch and need fold and cause easy fatigue fracture inefficacy, defect that production efficiency is low to a folding subassembly is exempted from in FFC sampling branch that difficult fatigue fracture inefficacy and production efficiency are high is provided.

In order to solve the technical problem, the utility model provides a pair of FFC sampling branch exempts from folding assembly, include:

the conductive bar is provided with a conductive bar extending part, and the conductive bar extending part is formed by extending part of the area of the conductive bar out of the conductive bar;

the FFC is provided with an FFC sampling branch suitable for being in lap joint with the conductive bar extending part, and the FFC sampling branch extends along the length direction of the FFC.

Optionally, the number of the conductive bars is multiple; FFC sampling branches corresponding to the number of the conductive bars are arranged on the FFC.

Optionally, the conductive bar is configured as a plate-shaped structure, and at least a partial region of the conductive bar is recessed downwards to form a recessed portion; the conductive row extension part is formed by extending the concave part along the plane of the concave part.

Optionally, the recessed portion is located in the middle of the conductive bar.

Optionally, the FFC includes: the conductive layers are arranged in a strip shape, the number of the conductive layers is one or more, and the conductive layers are arranged side by side;

and the protective film is suitable for wrapping the conductor layer.

Optionally, the conductive layer is made of copper foil.

Optionally, the conductive bar is made of aluminum.

Optionally, the connection mode of the conductive bar and the FFC sampling branch is welding.

Optionally, the FFC sampling branch folding-free assembly further includes: and the encapsulating layer is suitable for covering the welding part of the conductive bar and the FFC sampling branch.

Optionally, the upper surface of the encapsulating layer is not higher than the upper surface of the conductive bar.

The utility model discloses technical scheme has following advantage:

1. the utility model provides a folding subassembly is exempted from in FFC sampling branch through set up the electrically conductive extension of arranging on electrically conductive row, electrically conductive extension of arranging by the subregion of electrically conductive row extends electrically conductive row forms, realizes following FFC sampling branch that FFC's length direction extends with electrically conductive extension overlap joint, thereby realize FFC sampling branch with electrically conductive row's connection, and because electrically conductive extension of arranging extends electrically conductive row, consequently FFC sampling branch need not to fold can with electrically conductive extension overlap joint has saved FFC sampling branch's folding technology has avoided FFC sampling branch's folding department fatigue fracture and the sampling risk of failure that causes, simultaneously, guaranteed the uniformity of product, reduced the defective rate, be favorable to improving production efficiency.

2. The utility model provides a FFC sampling branch exempts from folding assembly, through setting up FFC sampling branch with the connected mode of leading electrical drainage is the welding to set up the rubber coating layer and cover lead electrical drainage with the branched welding position of FFC sampling, make FFC sampling branch with lead the firm in connection of electrical drainage reliable, for connecting the position and provide good protection, avoid taking place to connect in the course of the work and drop, thereby guarantee the reliability of sampled data.

3. The utility model provides a FFC sampling branch exempts from folding assembly, through setting up the depressed part that electrically conductive row extension portion formed by the at least subregion undercut on the electrically conductive row extends along its place plane and forms, realizes electrically conductive row extension position in the sunken district of electrically conductive row, thereby guarantees electrically conductive row with height after the welding position point of FFC sampling branch connection is glued is not more than electrically conductive row's upper surface has avoided the weld zone superelevation to the technological defect who has avoided causing because of the weld zone superelevation.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of the FFC of the present invention;

FIG. 2 isbase:Sub>A schematic cross-sectional view A-A of FIG. 1;

fig. 3 is a schematic view of the structural connection of the FFC sampling branch folding-free assembly of the present invention;

FIG. 4 is a schematic diagram of the structural connections of a FFC sampling assembly of the prior art;

fig. 5 is a partially enlarged view of the FFC fold in fig. 4.

Description of reference numerals:

1. an FFC; 11. a protective film; 12. a conductor layer; 13. an FFC sampling branch; 14. an FFC fold; 2. a conductive bar; 21. a conductive bar extension; 22. a recessed portion; 3. a connecting region.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

As shown in fig. 1 to 5, the FFC sampling branch folding-free assembly provided in this embodiment includes:

the power strip comprises a power strip 2, wherein a power strip extending part 21 is arranged on the power strip 2, and the power strip extending part 21 is formed by extending part of the power strip 2 out of the power strip 2;

the FFC sampling structure comprises an FFC1, wherein an FFC sampling branch 13 suitable for being in lap joint with the conductive bar extension part 21 is formed on the FFC1, and the FFC sampling branch 13 extends along the length direction of the FFC 1.

It should be noted that the FFC refers to a Flexible Flat Cable (FFC for short), is a novel data Cable formed by laminating a PET insulating material and an extremely thin tinned Flat copper wire through a high-tech automation equipment production line, has the advantages of softness, random bending and folding, thin thickness, small volume, simple connection, convenient disassembly, easy resolution of electromagnetic shielding and the like, is applied to a battery module, is connected with a conductive bar, and is used for sampling temperature and voltage data of a battery.

In the conventional FFC sampling, the connection form between the FFC sampling branch 13 and the conductive bar 2 is as shown in fig. 4, the FFC1 is cut to obtain the FFC sampling branch 13, and then the FFC sampling branch 13 is folded and fixed on the conductive bar 2 in an overlapping manner. In the above connection form, the FFC sampling branch 13 needs to be folded to form an FFC folding portion 14, if the connection between the FFC sampling branch 13 and the conductive bar 2 is unreliable, and the fixing failure is easily generated in the use process, the FFC sampling branch 13 may be in a state of continuously vibrating, and the FFC folding portion 14 is easily subjected to fatigue fracture under the condition of long-time vibration of the FFC sampling branch 13, so that the sampling failure is caused, and the battery module cannot be normally used.

The utility model provides a folding assembly is exempted from in FFC sampling branch, only need with FFC1 cuts out the required FFC sampling branch 13, FFC sampling branch 13 need not to fold, can with extend lead electrical drainage 2 lead the 21 lap-joint of electrical drainage extension portion.

The FFC sampling branch folding-free assembly provided by this embodiment is formed by arranging the conducting bar extending portion 21 on the conducting bar 2, wherein the conducting bar extending portion 21 is formed by extending the conducting bar 2 from a partial area of the conducting bar 2, so that the FFC sampling branch 13 extending along the length direction of the FFC1 is in lap joint with the conducting bar extending portion 21, thereby realizing the connection between the FFC sampling branch 13 and the conducting bar 2, and because the conducting bar extending portion 21 extends out of the conducting bar 2, the FFC sampling branch 13 can be in lap joint with the conducting bar extending portion 21 without being folded, so that the folding process of the FFC sampling branch 13 is omitted, the sampling failure risk caused by fatigue fracture at the folding position of the FFC sampling branch 13 is avoided, meanwhile, the consistency of a product is ensured, the reject ratio is reduced, and the production efficiency is improved.

In particular, the number of said conductive bars 2 is multiple; the FFC1 is provided with FFC sampling branches 13 corresponding to the number of the conductive bars 2.

Preferably, a plurality of the conductive bars 2 and the FFC sampling branches 13 corresponding to the number thereof implement data sampling for a plurality of batteries.

Specifically, the conductive bar 2 is configured as a plate-shaped structure, and at least partial area of the conductive bar 2 is recessed downwards to form a recessed part 22; the conductive bar extension 21 is formed by the recess 22 extending along the plane thereof.

In particular, the recess 22 is located in the middle of the conductive bar 2.

Specifically, the FFC1 includes: the conductive layer 12 is arranged in a long strip shape, the number of the conductive layers 12 is one or more, and a plurality of the conductive layers 12 are arranged side by side;

a protective film 11 adapted to wrap the conductor layer 12.

Specifically, the conductive layer 12 is made of copper foil.

Preferably, the material of the protection film 11 is an insulating material.

Specifically, the conductive bar 2 is made of aluminum.

Specifically, the conductive bar 2 is connected to the FFC sampling branch 13 by welding.

Preferably, the conductive bar 2 and the FFC sampling branch 13 are welded by ultrasonic welding.

Specifically, the FFC sampling branch folding-free assembly further comprises: and the encapsulating layer is suitable for covering the welding part of the conductive bar 2 and the FFC sampling branch 13.

The FFC sampling branch folding-free assembly provided by this embodiment is formed by welding the FFC sampling branch 13 to the conductive bar 2, and covering the conductive bar 2 to the welding position of the FFC sampling branch 13 with an adhesive-coated layer, so that the FFC sampling branch 13 is firmly and reliably connected to the conductive bar 2, and the connection position is well protected, thereby avoiding connection and falling off in the working process, and ensuring the reliability of sampling data.

Specifically, the upper surface of the encapsulating layer is not higher than the upper surface of the conductive bar 2.

The FFC sampling branch folding-free assembly provided by this embodiment is formed by extending the depressed part 22 formed by at least partially recessing the region of the conductive bar 2 downward on the conductive bar extended part 21 along the plane where the depressed part is located, so as to realize that the conductive bar extended part 21 is located in the depressed region of the conductive bar 2, thereby ensuring that the height of the conductive bar after the adhesive is dispensed at the welding position connected with the FFC sampling branch 13 is not more than the upper surface of the conductive bar 2, avoiding the ultra-high welding region, and avoiding the process defects caused by the ultra-high welding region.

The assembling steps of the FFC sampling branch folding-free assembly provided in this embodiment are described in detail below:

firstly, cutting the FFC1 into required number of FFC sampling branches 13; then the FFC1 is integrally placed on the conductive bar elongation part 21 of the conductive bar 2, the FFC sampling branch 13 is in lap contact with the conductive bar 2, and the conductor layer 12 is in direct contact with the conductive bar elongation part 21; then, the FFC sampling branch 13 and the conductive bar elongation part 21 are welded together by ultrasonic welding, so that the conductor layer 12 and the conductive bar 2 are welded together; and finally, dispensing is carried out on the welding position to cover the welding position to form a connection area 3, and the welding position is covered and protected through a dispensing process, so that the welding position is prevented from being oxidized, and the pull-out force of the welding point is enhanced.

By exchanging with the factory technology, the increased material cost of the extension part 21 of the conducting bar and the man-hour expense generated by manual folding of the FFC sampling branch 13 can be basically offset, and the production cost cannot be increased.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. An FFC sampling branch fold-free assembly, comprising:

the conductive bar (2), a conductive bar extension part (21) is arranged on the conductive bar (2), and the conductive bar extension part (21) is formed by extending a partial area of the conductive bar (2) out of the conductive bar (2);

an FFC (1), wherein an FFC sampling branch (13) suitable for being in lap joint with the conductive bar extension part (21) is formed on the FFC (1), and the FFC sampling branch (13) extends along the length direction of the FFC (1).

2. The FFC sampling branch folding-free assembly according to claim 1, characterized in that the number of said conductive bars (2) is plural; the FFC (1) is provided with FFC sampling branches (13) corresponding to the number of the conductive bars (2).

3. The FFC sampling branch folding-free assembly according to claim 1, characterized in that the conductive bar (2) is configured as a plate-like structure, and at least partial area of the conductive bar (2) is sunken downwards to form a sunken part (22); the conductive row extension (21) is formed by extending the concave part (22) along the plane of the concave part.

4. The FFC sampling branch fold-free assembly of claim 3, wherein the recess (22) is located in a middle portion of the conductive bar (2).

5. The FFC sampling branch folding-free assembly of claim 1, wherein the FFC (1) comprises: the conductive layer (12) is arranged in a long strip shape, the number of the conductive layers (12) is one or more, and a plurality of the conductive layers (12) are arranged side by side;

a protective film (11) adapted to wrap the conductor layer (12).

6. The FFC sampling branch folding-free assembly of claim 5, wherein the conductive layer (12) is made of copper foil.

7. The FFC sampling branch fold-free assembly of claim 1, wherein the conductive bar (2) is aluminum.

8. The FFC sampling branch fold-free assembly according to any of claims 1-7, wherein the connection of the conductive bar (2) to the FFC sampling branch (13) is by welding.

9. The FFC sampling branch folding-free assembly of claim 8, further comprising: and the encapsulating layer is suitable for covering the welding part of the conductive bar (2) and the FFC sampling branch (13).

10. The FFC sampling branch folding-free assembly according to claim 9, wherein the upper surface of the encapsulating layer is not higher than the upper surface of the conductive bar (2).