CN216287616U

CN216287616U - Cable and battery module with same

Info

Publication number: CN216287616U
Application number: CN202122641482.7U
Authority: CN
Inventors: 宋海阳; 曹胜捷
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-04-12
Anticipated expiration: 2031-10-29

Abstract

The utility model provides a cable and a battery module with the same, wherein the cable comprises: a conductor assembly including a plurality of conductors arranged at intervals in sequence in a predetermined direction perpendicular to an extending direction of the cable; the insulating outer cladding layer is coated on the peripheral surface of the conductor combination so as to insulate the adjacent two conductors and the conductors from the external environment; each conductor is provided with at least one through hole so as to form a safety structure on the corresponding conductor, and the flow area of the safety structure is smaller than that of the conductor. The cable solves the problem that in the prior art, when the FFC is used as a signal transmission component during battery module sampling, a safety device needs to be additionally arranged on a circuit board.

Description

Cable and battery module with same

Technical Field

The utility model relates to the technical field of batteries, in particular to a cable and a battery module with the same.

Background

With the rapid development of electric vehicles, the importance of batteries is also increasing, and at present, the sampling of the battery modules in the batteries uses wires or FPCs (flexible printed circuit boards) for signal transmission, and low-cost sampling schemes are being proposed in the industry through various approaches.

Conventionally, there has been proposed a method of transmitting a signal using an FFC (flexible flat cable) which is made of an ultra-thin flat copper wire covered with an insulating film such as PET.

However, when the FFC is used as a signal transmission component during sampling of the battery module, the design scheme of the sampling fuse is to connect an FPC (flexible printed circuit board) or a PCB (printed circuit board) with the FFC, and then to set a fuse on the FPC or the PCB to solve the fuse design problem of the FFC.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a cable and a battery module with the same, so as to solve the problem that in the prior art, when an FFC is used as a signal transmission component during sampling of the battery module, a safety device needs to be additionally arranged on a circuit board.

In order to achieve the above object, according to one aspect of the present invention, there is provided a cable comprising: a conductor assembly including a plurality of conductors arranged at intervals in sequence in a predetermined direction perpendicular to an extending direction of the cable; the insulating outer cladding layer is coated on the peripheral surface of the conductor combination so as to insulate the adjacent two conductors and the conductors from the external environment; each conductor is provided with at least one through hole so as to form a safety structure on the corresponding conductor, and the flow area of the safety structure is smaller than that of the conductor.

Further, the conductor is a flat strip-shaped structure, and the maximum width of the safety structure is smaller than the minimum width of the conductor along the preset direction.

Further, the through hole is a circular hole, an elliptical hole or a polygonal hole.

Further, there is one through hole; and/or the through holes are plural, and the plural through holes are arranged on the corresponding conductors at intervals along the predetermined direction.

Further, a reinforcing structure is arranged at the through hole to increase the strength of the cable.

Further, the reinforcing structure is two insulating reinforcing layers respectively arranged on two opposite sides of the cable.

Furthermore, all the insulating reinforcing layers are bonded on the side surfaces of the cable.

Further, in the predetermined direction, the minimum width of the reinforcing structure is greater than or equal to the maximum width of the cable, and in the extending direction of the cable, the minimum length of the reinforcing structure is greater than the maximum length of the through hole, so as to completely cover the through hole.

Further, along the extending direction of the cable, the reinforcing structure comprises a first side surface and a second side surface, the through hole comprises a third side surface and a fourth side surface, the first side surface is positioned on one side of the third side surface far away from the fourth side surface, and the second side surface is positioned on one side of the fourth side surface far away from the third side surface; wherein, the minimum distance between the first side and the third side is greater than or equal to 5mm, and the minimum distance between the second side and the fourth side is greater than or equal to 5 mm.

According to another aspect of the present invention, a battery module is provided, wherein the battery module uses the cable for signal transmission.

By applying the technical scheme of the utility model, the cable comprises a conductor combination and an insulating outer cladding, wherein the conductor combination comprises a plurality of conductors which are sequentially arranged at intervals along a preset direction vertical to the extending direction of the cable; the outer insulating cladding layer is coated on the outer peripheral surface of the conductor combination so as to insulate the adjacent two conductors and the conductors from the external environment; each conductor is provided with at least one through hole so as to form a safety structure on the corresponding conductor, and the flow area of the safety structure is smaller than that of the conductor. Therefore, the cable provided by the utility model has the advantages that the safety structure is arranged on the cable body, the FFC is not required to be switched with an external safety device, the risk of failure of the safety device is reduced, the cost required by switching the safety device is reduced, the weight added by the switching safety device is reduced, and the problem that the safety device is required to be additionally arranged on the circuit board when the FFC is used as a signal transmission component during sampling of the battery module in the prior art is solved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

fig. 1 shows a schematic structural view of a first embodiment of a cable according to the utility model; and

fig. 2 shows a schematic structural view of a second embodiment of the cable according to the utility model.

Wherein the figures include the following reference numerals:

10. an insulating outer cladding; 20. a conductor; 30. a through hole; 40. a safety structure; 50. and (5) reinforcing the structure.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1 and 2, the present invention provides a cable including: a conductor assembly including a plurality of conductors 20 arranged at intervals in sequence in a predetermined direction perpendicular to the extending direction of the cable; the insulating outer cladding layer 10 is coated on the peripheral surface of the conductor combination so as to insulate the adjacent two conductors 20 and the conductors 20 from the external environment; wherein, each conductor 20 is processed with at least one through hole 30 to form a fuse structure 40 on the corresponding conductor 20, so that the current flowing area of the fuse structure 40 is smaller than that of the conductor 20.

The cable of the utility model comprises a conductor assembly and an insulating outer cladding 10, the conductor assembly comprising a plurality of conductors 20 arranged in sequence at intervals along a predetermined direction perpendicular to the direction of extension of the cable; the insulating outer cladding 10 is coated on the peripheral surface of the conductor combination so as to insulate the adjacent two conductors 20 and the conductors 20 from the external environment; wherein, each conductor 20 is processed with at least one through hole 30 to form a fuse structure 40 on the corresponding conductor 20, so that the current flowing area of the fuse structure 40 is smaller than that of the conductor 20. Therefore, the cable provided by the utility model has the advantages that the safety structure is arranged on the cable body, the FFC is not required to be switched with an external safety device, the risk of failure of the safety device is reduced, the cost required by switching the safety device is reduced, the weight added by the switching safety device is reduced, and the problem that the safety device is required to be additionally arranged on the circuit board when the FFC is used as a signal transmission component during sampling of the battery module in the prior art is solved.

Specifically, the cable of the present invention is an FFC (i.e., a flexible flat cable). After the insulating outer cladding 10 and the conductors 20 of the FFC are arranged and pressed according to the design requirements, the FFC is placed on a positioning tool, and each conductor 20 of the FFC is punched through a precise punching device to process the required through hole 30.

Preferably, the conductor 20 is a flat strip structure, and the maximum width of the securing structure 40 is smaller than the minimum width of the conductor 20 along the predetermined direction; the cable is also in a flat strip structure, and the predetermined direction is the width direction of the cable.

Optionally, the through-hole 30 is a circular hole or an elliptical hole or a polygonal hole.

Optionally, there is one through-hole 30; and/or the through-holes 30 are plural, the plural through-holes 30 being arranged at intervals in a predetermined direction on the respective conductors 20.

In the first embodiment shown in fig. 1, the through hole 30 is one, and the middle portion of the conductor 20 in the width direction is cut off together with the outer insulating cladding 10 by a precision machining apparatus, so as to reserve the portions except the through hole 30 on both sides of the conductor 20 in the width direction to be used together as the fuse structure 40.

At this time, the width of the fuse structure 40 in the predetermined direction is the sum (L1+ L2) of the widths of the portions on both sides in the width direction of the conductor 20, and the minimum width of the conductor 20 is L0.

In the first embodiment shown in fig. 2, there are two through holes 30, two through holes 30 are arranged on the corresponding conductors 20 at intervals along a predetermined direction, and both sides of the conductors 20 in the width direction are cut off together with the outer insulating cladding 10 by precision machining equipment to reserve a middle part of the conductors 20 in the width direction as a fuse structure 40, wherein, in two adjacent conductors 20, the through hole 30 on the side of the first conductor 20 close to the second conductor 20 is communicated with the through hole 30 on the side of the second conductor 20 close to the first conductor 20, so as to facilitate one-time cutting off.

At this time, the width of the fuse structure 40 in the predetermined direction is the width L3 of the middle portion in the width direction of the conductor 20, and the width of the conductor 20 is L0.

It should be noted that, no matter which scheme is used, the minimum overcurrent area of the fuse structure 40 of the finally formed single conductor 20 is preliminarily calculated according to the required fuse current and the current-carrying capacity of the base material of the conductor 20, and then is matched through more fuse current tests, so as to obtain a more precise design scheme of the size of the fuse structure 40.

Preferably, a reinforcing structure 50 is provided at the through hole 30 to increase the strength of the cable. Wherein, the reinforcement structure 50 is two insulating reinforcement layers that set up respectively in the relative both sides of the thickness direction of cable, and each insulating reinforcement layer all bonds in the side of cable.

When the operation of cutting the through-hole 30 is completed, since only the conductor 20 and the insulating outer cladding 10 of an extremely small width dimension remain in the width direction of the cable, it is necessary to add a reinforcing structure 50 at the position of the fuse structure 40 to partially reinforce the cable. The reinforcing structure 50 may be a PI film or other hard insulating materials that are not easily bent and are adhered to two opposite sides of the cable in the thickness direction; before the reinforcement structure 50 is attached, an insulating adhesive is applied to the cut-out portion of the through hole 30 and is applied to the positions of the opposite sides of the cable in the thickness direction where the reinforcement structure 50 is to be attached, so as to ensure the insulation between the exposed conductors 20 and ensure the reliable connection between the cable and the reinforcement structure 50.

Specifically, in a predetermined direction (i.e., a width direction of the cable), the minimum width of the reinforcing structure 50 is greater than or equal to the maximum width of the cable, and in an extending direction of the cable (i.e., a length direction of the cable), the minimum length of the reinforcing structure 50 is greater than the maximum length of the through-hole 30 to completely cover the through-hole 30.

As shown in fig. 1 and 2, along the extending direction of the cable, two side surfaces of the reinforcing structure 50 are respectively disposed corresponding to two side surfaces of the through hole 30, and each side surface of the reinforcing structure 50 is located on one side of one corresponding side surface of the through hole 30, which is far away from the other side surface of the through hole 30; wherein, the minimum distance S between each side of the reinforcing structure 50 and the corresponding side of the through hole 30 is greater than or equal to 5 mm.

Specifically, along the extending direction of the cable, two side surfaces of the reinforcing structure 50 are a first side surface and a second side surface, respectively, two side surfaces of the through hole 30 are a third side surface and a fourth side surface, respectively, the first side surface is located on one side of the third side surface far away from the fourth side surface, and the second side surface is located on one side of the fourth side surface far away from the third side surface; wherein, the minimum distance between the first side and the third side is greater than or equal to 5mm, and the minimum distance between the second side and the fourth side is also greater than or equal to 5 mm.

The utility model also provides a battery module which adopts the cable for signal transmission.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A cable, comprising:

a conductor assembly comprising a plurality of conductors (20) arranged at intervals in sequence along a predetermined direction perpendicular to the direction of extension of the cable;

the insulating outer cladding (10) is coated on the outer peripheral surface of the conductor combination so as to insulate the adjacent two conductors (20) and the conductors (20) from the external environment;

wherein, each conductor (20) is provided with at least one through hole (30) so as to form a safety structure (40) on the corresponding conductor (20), so that the flow area of the safety structure (40) is smaller than that of the conductor (20).

2. The cable according to claim 1, wherein the conductor (20) is a flat strip-like structure, and the maximum width of the securing structure (40) is smaller than the minimum width of the conductor (20) in the predetermined direction.

3. A cable according to claim 1, wherein said through hole (30) is a circular hole or an elliptical hole or a polygonal hole.

4. The cable of claim 1,

the number of the through holes (30) is one; and/or

The through holes (30) are multiple, and the through holes (30) are arranged on the corresponding conductors (20) at intervals along the preset direction.

5. A cable according to claim 1, wherein a reinforcing structure (50) is provided at the through hole (30) to increase the strength of the cable.

6. Cable according to claim 5, wherein the reinforcing structure (50) is two insulating reinforcing layers respectively arranged on opposite sides of the cable.

7. A cable according to claim 6, wherein each of the insulating and reinforcing layers is bonded to a side of the cable.

8. Cable according to claim 5, characterized in that, in the predetermined direction, the minimum width of the reinforcing structure (50) is greater than or equal to the maximum width of the cable, and in the direction of extension of the cable, the minimum length of the reinforcing structure (50) is greater than the maximum length of the through-hole (30) so as to completely cover the through-hole (30).

9. The cable according to claim 8, wherein, in the direction of extension of the cable, the stiffening structure (50) comprises a first side and a second side, and the through-hole (30) comprises a third side and a fourth side, the first side being located on the side of the third side remote from the fourth side, and the second side being located on the side of the fourth side remote from the third side; wherein the minimum distance between the first side and the third side is greater than or equal to 5mm, and the minimum distance between the second side and the fourth side is greater than or equal to 5 mm.

10. A battery module, wherein the cable according to any one of claims 1 to 9 is used for signal transmission.