CN220065212U - FFC line, battery package and vehicle - Google Patents

Abstract

The utility model provides an FFC wire, a battery pack and a vehicle, wherein the FFC wire comprises a conductor layer and two insulating layers, the two insulating layers are respectively arranged on two sides of the conductor layer, the conductor layer comprises a plurality of conductors and a plurality of PIN branches which are punched, and the PIN branches are positioned on one side of the conductor layer; the conductors comprise connecting sections, variable-pitch sections and collecting sections, the variable-pitch sections are connected between the connecting sections and the collecting sections, and the collecting sections of the conductors are connected with the PIN branches in a one-to-one correspondence manner; the connecting sections of the conductors are arranged at intervals along the first direction according to a first preset interval, and the connecting sections of the conductors form a total connecting end; the collection sections of the conductors are arranged at intervals along the first direction according to a second preset interval, the first preset interval is larger than or smaller than the second preset interval, and the variable-pitch sections of the conductors are gradually reduced along the direction away from the PIN branches. According to the FFC wire, the distance-changing section is arranged, so that the distances between the connecting end and the collecting end of the FFC wire are different, the application range of the FFC wire is widened, and the FFC wire is convenient to use in a battery pack.

Description

FFC line, battery package and vehicle

Technical Field

The utility model relates to the technical field of flexible cables, in particular to an FFC wire, a battery pack and a vehicle.

Background

The FFC wire currently applied to signal acquisition of a new energy automobile or an energy storage battery pack is formed by performing thermal lamination forming on a copper wire and a surface insulating film in a multimode production mode in the processing process. Branching in FFC line: the signal acquisition end is respectively exposed with copper or welded with a nickel sheet and welded with an NTC component, and the wiring is formed by splitting and bending. In the prior art, each wire in the FFC wire extends along a straight line, the interval between the wires is from the connecting end to the collecting end, the interval width is fixed, and the application range of the FFC is narrow. Each FFC can only be abutted with the matched interface, if the interface is replaced, the FFC needs to be replaced, and the space occupied by different FFCs is different, so that the space layout in the battery pack is affected, and the FFC is inconvenient to use.

Disclosure of Invention

Aiming at the problem that the prior FFC wire can only use an interface matched with the FFC wire due to fixed space, the FFC wire is inconvenient to use in a battery pack, the battery pack and a vehicle are provided.

In one aspect, the utility model provides an FFC wire, which comprises a conductor layer and two insulating layers, wherein the two insulating layers are respectively arranged on two sides of the conductor layer, the conductor layer comprises a plurality of punched conductors and a plurality of PIN branches, and the PIN branches are positioned on one side of the conductor layer; the conductors comprise connecting sections, variable-pitch sections and collecting sections, the variable-pitch sections are connected between the connecting sections and the collecting sections, and the collecting sections of the conductors are connected with the PIN branches in a one-to-one correspondence manner; the connecting sections of the conductors are arranged at intervals along a first direction at a first preset interval, and the connecting sections of the conductors form a total connecting end; the collection sections of the conductors are arranged at intervals along a first direction according to a second preset interval, the first preset interval is larger than or smaller than the second preset interval, and the variable-pitch sections of the conductors are gradually reduced along a direction away from the PIN branches.

In the utility model, the conductors and the PIN branches are formed by punching, so that bending and encapsulation processing of the PIN branches are avoided, processing links are reduced, cost is saved, and the problems of material function reduction, adhesive film layering, wire function failure, even fire and battery explosion caused by bending in a long-term severe environment are avoided. Through setting up the displacement section, and the displacement section reduces gradually along the direction of keeping away from PIN branch for first between the linkage segment is greater than or less than the second between the collection section and predetermines the interval, thereby makes FFC line have two kinds of intervals and width, increases FFC line's application scope. The device is suitable for being installed in various battery packs while the total connection end is matched with the interface.

Optionally, an included angle between the variable-pitch section and the acquisition section in the conductor is alpha, and alpha is more than or equal to 90 degrees and less than 180 degrees.

Optionally, the variable-pitch sections of a plurality of the conductors are arranged in parallel.

Optionally, the FFC wire further includes a plurality of angle adjustment structures, the angle adjustment structures include a bar-shaped through hole and a notch, the bar-shaped through hole is disposed between the PIN branch and the conductor, and an extension direction of the bar-shaped through hole is parallel to the collection section; the notch is arranged on one side of the PIN branch, which is far away from the total connecting end, the notch is communicated with the strip-shaped through hole, and the notch and the strip-shaped through hole penetrate through the two insulating layers, so that the PIN branch can move along the direction far away from the conductor.

Optionally, a fuse is provided on one side of each PIN branch, and the fuse is connected between the acquisition section and the PIN branch.

Optionally, at most one side of the free end of the PIN branch is covered with the insulating layer.

Optionally, the conductor layer further includes an NTC branch, where the NTC branch is punched by two collecting sections, and at most one side of one end of the NTC branch, which is far away from the connecting section, is covered with the insulating layer.

Optionally, at most one surface of the total connection end is covered with the insulating layer, and when one surface of the total connection end is covered with the insulating layer, a reinforcing plate is arranged on the insulating layer, and the reinforcing plate is arranged opposite to the total connection end.

In another aspect, the present utility model also provides a battery pack including the FFC wire as set forth in any one of the above.

On the other hand, the utility model also provides a vehicle, which comprises the battery pack.

Drawings

FIG. 1 is a schematic view of an FFC wire in accordance with embodiment 1 of the present utility model;

FIG. 2 is a schematic view of an FFC wire structure in accordance with embodiment 2 of the present utility model;

FIG. 3 is a schematic view showing the structure of an FFC wire in accordance with embodiment 3 of the present utility model;

FIG. 4 is a schematic view showing the structure of an FFC wire in accordance with embodiment 4 of the present utility model;

FIG. 5 is a schematic side view of an FFC wire in accordance with embodiment 4 of the present utility model;

FIG. 6 is a schematic diagram of a first step of manufacturing an FFC of embodiment 1 of the present utility model;

FIG. 7 is a schematic diagram of a second step of manufacturing an FFC of embodiment 1 of the present utility model;

FIG. 8 is a schematic diagram showing the construction of a third step of manufacturing an FFC of embodiment 1 of the present utility model;

FIG. 9 is a schematic diagram of an insulating layer in a fourth step of manufacturing an FFC of embodiment 1 of the present utility model;

FIG. 10 is a schematic diagram showing the construction of a fifth step of manufacturing an FFC of embodiment 1 of the present utility model;

FIG. 11 is a schematic diagram showing a sixth step of manufacturing an FFC of embodiment 1 of the present utility model;

FIG. 12 is a schematic diagram showing a seventh step of manufacturing the FFC of embodiment 1 of the present utility model;

fig. 13 is a schematic diagram of a step eight of manufacturing the FFC of embodiment 1 of the present utility model.

Reference numerals in the drawings of the specification are as follows:

1. a conductor; 11. a connection section; 12. a variable-pitch section; 13. a collection section;

2. a PIN branch; 21. a fuse;

3. an insulating layer; 31. an insulating layer a; 32. an insulating layer b; 33. an insulating layer c; 34. an insulating layer d; 35. a first insulating film; 351. a third through hole; 36. self-adhesive film; 37. a second insulating film; 371. a second through hole;

41. a bar-shaped through hole; 42. a notch;

5. an NTC branch; 51. an NTC assembly;

6. and a reinforcing plate.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

In order to illustrate the technical scheme of the utility model, the following description is made by specific examples.

In one aspect, as shown in fig. 1 to 13, an FFC wire according to an embodiment of the present utility model includes a conductor layer and two insulation layers 3, where the two insulation layers 3 are respectively disposed on two sides of the conductor layer, the conductor layer includes a plurality of punched conductors 1 and a plurality of PIN branches 2, and the PIN branches 2 are located on one side of the conductor layer. The conductor 1 comprises a connecting section 11, a variable-pitch section 12 and an acquisition section 13, wherein the variable-pitch section 12 is connected between the connecting section 11 and the acquisition section 13, and the acquisition sections 13 of a plurality of conductors 1 are connected with a plurality of PIN branches 2 in a one-to-one correspondence. The connection sections 11 of the plurality of conductors 1 are arranged at first preset pitch intervals along a first direction, and the connection sections 11 of the plurality of conductors 1 form a total connection end. The collecting sections 13 of the plurality of conductors 1 are arranged at intervals of a second preset distance along a first direction, the first preset distance is larger than or smaller than the second preset distance, and the variable-distance sections 12 of the plurality of conductors 1 are gradually reduced along a direction away from the PIN branches 2. Specifically, the first direction is longitudinal, and when the first preset interval is greater than the second preset interval, the width of the total connecting end is greater than the whole width of the collecting section 13, and the space occupied in the battery pack is reduced while the total connecting end is matched with the connector. When the first preset interval is smaller than the second preset interval, the width of the total connecting end is smaller than the whole width of the collecting section 13, and under the condition that the layout in the battery pack is fixed, the connector of another model is convenient to adapt.

In the embodiment of the utility model, the conductor 1 and the PIN branch 2 are formed by punching, so that the bending and encapsulation processing of the PIN branch 2 are avoided, the processing links are reduced, the cost is saved, and the problems of material function reduction, adhesive film layering, wire function failure, even fire and battery explosion caused by bending in a long-term severe environment are avoided. Through setting up displacement section 12, and displacement section 12 reduces gradually along the direction of keeping away from PIN branch 2 for first preset interval between the linkage segment 11 is greater than or less than the second preset interval between the collection section 13, thereby makes FFC line have two kinds of intervals and width, increases FFC line's application scope. The device is suitable for being installed in various battery packs while the total connection end is matched with the interface.

Specifically, in some embodiments of the present utility model, the insulating layer 3 is a PET film or PI film, and one side of the PET film or PI film is coated with a hot melt adhesive.

In some embodiments of the utility model, as shown in FIGS. 1-4, the angle between the gauge section 12 and the acquisition section 13 in the conductor 1 is alpha, 90 deg. alpha < 180 deg.. By adjusting the angle between the variable-pitch section 12 and the acquisition section 13 and the length of the variable-pitch section 12, the first pitch and the second pitch are adjusted, thereby producing FFC wires having two pitches.

As shown in fig. 1-4, in some embodiments of the utility model, the distance-varying sections 12 of a plurality of the conductors 1 are arranged in parallel, facilitating the machining of the distance-varying sections 12.

It should be noted that, when the variable-pitch sections 12 are not parallel to each other, the variable-pitch sections 12 of the plurality of conductors 1 gradually gather or diverge from one end of the connecting section 11 toward the collecting section 13.

As shown in fig. 1-4, in some embodiments of the present utility model, the FFC wire further includes a plurality of angle adjustment structures, the angle adjustment structures including a bar-shaped through hole 41 and a notch 42, the bar-shaped through hole 41 being disposed between the PIN branch 2 and the conductor 1, and an extending direction of the bar-shaped through hole 41 being parallel to the collecting section 13. The notch 42 is disposed on one side of the PIN branch 2 away from the total connection end, the notch 42 is communicated with the strip-shaped through hole 41, and the notch 42 and the strip-shaped through hole 41 penetrate through the two insulating layers 3, so that the PIN branch 2 can move along a direction away from the conductor 1. Specifically, the bar-shaped through hole 41 and the notch 42 are formed by punching, and by providing the bar-shaped through hole 41 and the notch 42, the PIN leg 2 is made movable relative to the conductor layer, so that the connection angle of the free end of the PIN leg 2 is made variable.

As shown in fig. 1-4, in some embodiments of the utility model, a fuse 21 is provided on one side of each PIN leg 2, the fuse 21 being connected between the acquisition section 13 and the PIN leg 2. The fuse 21 is arranged on one side of the PIN branch 2, so that the phenomenon that the fuse 21 is transitionally concentrated together to cause the strength of the FFC to be reduced, and the phenomenon that the fuse 21 is fused due to the fact that the normal operation of the adjacent fuse 21 is influenced when the single fuse 21 is fused in the conventional FFC is reduced.

As shown in fig. 1-4, in some embodiments of the utility model, at most one side of the free end of the PIN leg 2 is covered with the insulating layer 3. The requirements of different connection modes are met, when one face of the PIN branch 2 is exposed, the PIN branch can be connected with metal pieces such as nickel sheets and aluminum bars in a welding mode (after welding, the welding part can be protected without glue), and when the two faces of the PIN branch 2 are exposed, the PIN branch can be connected with metal pieces such as nickel sheets and aluminum bars in a welding mode (the welding part can be protected by glue), and in a riveting mode.

In some embodiments of the utility model, the conductor layer further comprises an NTC branch 5, the NTC branch 5 being die cut from two collecting segments 13, the end of the NTC branch 5 remote from the connecting segment 11 being covered at most with the insulating layer 3. The NTC branch 5 is punched by two collection sections 13 to form, avoids buckling of collection section 13, and one end that NTC branch 5 kept away from link 11 has at most one side to cover and has insulating layer 3, satisfies the demand of different connected modes. Specifically, an NTC component 51 is connected to the NTC branch 5.

As shown in fig. 1 to 5, in some embodiments of the present utility model, at most one surface of the total connection end is covered with the insulating layer 3, and when one surface of the total connection end is covered with the insulating layer 3, a reinforcing plate 6 is disposed on the insulating layer 3, and the reinforcing plate 6 is disposed opposite to the total connection end. By providing the stiffening plate 6, the strength of the total connection end is increased.

The present utility model will be described in further detail with reference to the following specific examples.

Example 1

As shown in fig. 6 to 13, the manufacturing process of the FFC of this embodiment includes the following steps:

in the first step, the collecting section 13 and the PIN branch 2 of the conductor 1 are punched out of a rolled copper foil or aluminum foil.

And step two, attaching a self-adhesive film 36 to the lower surface of the rolled copper foil or aluminum foil, and punching out the connection section 11 and the variable-pitch section 12 of the conductor 1 on the rolled copper foil or aluminum foil.

And step three, punching the connection part between the conductors 1 along the longitudinal direction by using a die, and connecting the PIN branches 2 with the corresponding collecting sections 13 of the conductors 1. The fuse 21 is die cut laterally on the PIN leg 2 side.

Step four, manufacturing an insulating layer 3, wherein the insulating layer 3 comprises an upper insulating layer and a lower insulating layer which are attached to the surface of a conductor layer, and the structures of the upper insulating layer and the lower insulating layer can be the same or different, as shown in fig. 9, the manufacturing methods of the upper insulating layer and the lower insulating layer are as follows:

insulating layer a 31: two rolls of first insulating films 35 are spliced on the self-adhesive film 36, a space is arranged between the two rolls of first insulating films 35, first through holes are punched in the connecting section 11 and the distance-changing section 12 of the conductor layer, and a second insulating film 37 is attached to the first through holes. A second through hole 371 is punched in the second insulating film 37 at an end remote from the gauge section 12 in a region corresponding to the connection section 11. The third through holes 351 are punched on the first insulating film 35 at positions corresponding to the NTC branches 5.

Insulating layer b 32: the first insulating film 35 is attached to the self-adhesive film 36, a first through hole is punched in the connecting section 11 and the pitch-changing section 12 of the conductor layer, and the second insulating film 37 is attached to the first through hole. A second through hole 371 is punched in the second insulating film 37 at an end remote from the gauge section 12 in a region corresponding to the connection section 11. The third through holes 351 are punched on the first insulating film 35 at positions corresponding to the NTC branches 5.

Insulating layer c 33: two rolls of first insulating films 35 are spliced on the self-adhesive film 36, a space is arranged between the two rolls of first insulating films 35, a first through hole is punched on the connecting section 11 and the distance-changing section 12 of the conductor layer, and a second insulating film 37 is attached to the first through hole. The reinforcing plate 6 is attached to the second insulating film 37 in a region corresponding to the connection section 11 and the first insulating film 35 in a region corresponding to the NTC branch 5 and connected to the NTC element 51.

Insulating layer d 34: the first insulating film 35 is attached to the self-adhesive film 36, a first through hole is punched in the connecting section 11 and the pitch-changing section 12 of the conductor layer, and the second insulating film 37 is attached to the first through hole. The reinforcing plate 6 is attached to the second insulating film 37 in a region corresponding to the connection section 11 and the first insulating film 35 in a region corresponding to the NTC branch 5 and connected to the NTC element 51.

Any combination of insulating layers a 31-d 34 is provided so that the final FFC wire is such that the total connection end is covered with at most one side with said insulating layer 3, the end of the ntc branch 5 remote from said connection section 11 is covered with at most one side with said insulating layer 3, and the free end of the pin branch 2 is covered with at most one side with said insulating layer 3. In this embodiment, the upper and lower insulating layers are both insulating layers a 31.

And step five, bonding the insulating layer 3 on both sides of the conductor layer, specifically, removing the self-adhesive film 36 on the insulating layer 3 during bonding, and bonding one side of the conductor layer, which is not bonded to the self-adhesive film 36, first.

And step six, cutting off the rim charge of the insulating layer 3, and punching the insulating layer 3 which is not covered with the conductor layer.

And step seven, cutting the NTC branches 5 on the conductor layer, and cutting the angle adjusting structure on the conductor layer and the insulating layer 3 in the area close to the PIN branches 2.

And step eight, slitting. And cutting the conductor layer manufactured in the step eight to form two or more FFC wires.

Step nine, the NTC component 51 is assembled to the NTC branch 5 by welding or plugging.

Example 2

Most of the preparation steps in example 1 were included, except that the upper and lower insulating layers were selected from the insulating layer a 31 and the insulating layer b 32.

Example 3

The majority of the preparation steps included in example 1 are different from example 1 in that the upper and lower insulating layers are selected from insulating layer a 31 and insulating layer c 33.

Example 4

The majority of the preparation steps included in example 1 are different from example 1 in that the upper and lower insulating layers are selected from insulating layer a 31 and insulating layer d 34.

In another aspect, a battery pack according to an embodiment of the present utility model includes the FFC wire according to any one of the embodiments above.

In another aspect, a vehicle of an embodiment of the present utility model includes a battery pack as described in the above embodiment.

The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting. Although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some of the technical features thereof can be replaced by equivalents. Such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model, and are intended to be included in the scope of the present utility model.

Claims (10)

1. The FFC wire is characterized by comprising a conductor layer and two insulating layers, wherein the two insulating layers are respectively arranged on two sides of the conductor layer, the conductor layer comprises a plurality of conductors and a plurality of PIN branches, the conductors are punched, and the PIN branches are positioned on one side of the conductor layer; the conductors comprise connecting sections, variable-pitch sections and collecting sections, the variable-pitch sections are connected between the connecting sections and the collecting sections, and the collecting sections of the conductors are connected with the PIN branches in a one-to-one correspondence manner; the connecting sections of the conductors are arranged at intervals along a first direction at a first preset interval, and the connecting sections of the conductors form a total connecting end; the collection sections of the conductors are arranged at intervals along a first direction according to a second preset interval, the first preset interval is larger than or smaller than the second preset interval, and the variable-pitch sections of the conductors are gradually reduced along a direction away from the PIN branches.

2. The FFC wire of claim 1 wherein the angle between the gauge section and the acquisition section in the conductor is a, 90 ° -a < 180 °.

3. The FFC wire of claim 2 wherein said gauge sections of a plurality of said conductors are disposed in parallel.

4. The FFC wire of claim 1, further comprising a plurality of angle adjustment structures comprising a bar-shaped through hole and a notch, the bar-shaped through hole being disposed between the PIN branch and the conductor, the extending direction of the bar-shaped through hole being parallel to the collection section; the notch is arranged on one side of the PIN branch, which is far away from the total connecting end, the notch is communicated with the strip-shaped through hole, and the notch and the strip-shaped through hole penetrate through the two insulating layers, so that the PIN branch can move along the direction far away from the conductor.

5. The FFC wire of claim 1, wherein each PIN leg is provided with a fuse on one side, the fuse being connected between the acquisition segment and the PIN leg.

6. The FFC wire of claim 1, wherein the free ends of the PIN branches are covered with the insulating layer on at most one side.

7. The FFC wire of claim 1, wherein the conductor layer further comprises an NTC branch die cut from two of the collection segments, the end of the NTC branch distal from the connection segment being covered with the insulating layer on at most one side.

8. The FFC wire of claim 1, wherein the total connection terminal is covered with the insulating layer on at most one side, and when the total connection terminal is covered with the insulating layer on one side, a reinforcing plate is disposed on the insulating layer, and the reinforcing plate is disposed opposite to the total connection terminal.

9. A battery pack comprising the FFC wire of any one of claims 1 to 8.

10. A vehicle comprising the battery pack of claim 9.