CN216288866U - Sampling assembly and battery module with same - Google Patents

Abstract

The utility model provides a sampling assembly and a battery module with the same, wherein the sampling assembly comprises: a substrate; a bus bar; the adapter plate is arranged independently from the base material, one end of the adapter plate is connected with the base material, and the other end of the adapter plate is used for being connected with the bus bar; the adapter plate is provided with a narrow-diameter part, so that when the current on the adapter plate reaches a preset fusing current, the narrow-diameter part of the adapter plate is fused. The problem of the sampling subassembly of battery among the prior art be difficult to protect outside cable is solved in this application.

Description

Sampling assembly and battery module with same

Technical Field

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

Background

With the rapid development of electric vehicles, the importance of batteries is becoming more and more important, at present, module sampling in batteries uses wires or FPCs (Flexible Printed Circuit boards) for signal transmission, low-cost sampling schemes are being proposed in the industry through various approaches, and at present, an acquisition scheme of FFCs (Flexible Flat cables) is proposed, that is, an insulating film made of ultra-thin Flat copper wires covered with PET (thermoplastic polyester) or other materials.

Because the conductor in the FFC belongs to ultra-thin copper line, when being connected with the aluminium bar on the module, can influence laser welding or ultrasonic bonding's reliability, welded pulling force and peel force are all less usually, can have the risk that drops in the use of module vibration impact test or whole car, influence the normal use of vehicle.

In addition, because of the characteristics of the FFC, there is no way to internally set the loop fuse like an FPC, at which time the external cable cannot be protected when the FFC design is used because there is no sampling fuse.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a sampling assembly and a battery module with the same, so as to solve the problem that the sampling assembly of a battery in the prior art is difficult to protect an external cable.

To achieve the above object, according to one aspect of the present invention, there is provided a sampling assembly including: a substrate; a bus bar; one end of the adapter sheet is connected with the base material, and the other end of the adapter sheet is used for being connected with the bus bar; the adapter plate is provided with a narrow-diameter part, so that when the current on the adapter plate reaches a preset fusing current, the narrow-diameter part of the adapter plate is fused.

Furthermore, the adapter plate comprises a connecting strip and a connecting block, one end of the connecting strip is connected with the base material, the other end of the connecting strip is connected with the connecting block, and the connecting block is used for being connected with the bus bar; the narrow part is arranged on the connecting strip.

Further, the maximum flow cross-sectional area of the connecting bar through which a current flows is smaller than the minimum flow cross-sectional area of the connecting bar through which a current flows.

Further, the width of the contact surface of the connecting block, which is in contact with the bus bar, is larger than the maximum width of the base material; the width direction of the contact surface of the connecting block is perpendicular to the flowing direction of current in the connecting block, and the width direction of the base material is perpendicular to the flowing direction of current at the corresponding position in the base material.

Furthermore, the flow cross section of the connecting strip for current to flow through is rectangular; and/or the connecting block is a rectangular plate.

Furthermore, the connecting strip is provided with a first contact part used for contacting with the base material, the surface of the first contact part facing the base material is a first contact surface, the base material is provided with a second contact part used for contacting with the first contact part, the surface of the second contact part facing the connecting strip is a second contact surface, and the value range of the difference value between the width of the first contact surface and the width of the second contact surface is 0 mm-0.2 mm; the width direction of the first contact surface and the width direction of the second contact surface are both perpendicular to the flowing direction of current in the connecting strip.

Further, the length of the overlapping area between the first contact surface and the second contact surface is 5mm to 10 mm; wherein the length direction of the overlapping area is parallel to the flowing direction of the current in the connecting strip.

Furthermore, the connecting block is rectangular, and the maximum width of the connecting strip is one sixth to one third of the width of the connecting block; the width direction of the connecting strip is vertical to the flowing direction of current in the connecting strip; the width direction of the connection block is perpendicular to the flow direction of the current in the connection block.

Further, the minimum flow cross section of the narrow-diameter portion through which the current flows is the minimum flow cross section of the interposer through which the current flows.

According to another aspect of the utility model, a battery module is provided, which comprises a sampling assembly.

By applying the technical scheme, the sampling assembly provided by the application comprises a base material, a bus bar and a switching piece, wherein the switching piece and the base material are arranged independently, one end of the switching piece is connected with the base material, and the other end of the switching piece is used for being connected with the bus bar; the adapter plate is provided with a narrow-diameter part, so that when the current on the adapter plate reaches the preset fusing current, the narrow-diameter part of the adapter plate is fused, and therefore when the FFC acquisition scheme is adopted, the narrow-diameter part is arranged on the adapter plate to serve as a loop fuse, the reliability of FFC connection is guaranteed, an external transmission cable is reliably protected, and the problem that the FFC body in the prior art cannot design the loop fuse 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 is a schematic view illustrating a position of a sampling assembly on a battery module according to an embodiment of the battery module of the present invention;

FIG. 2 shows a schematic structural diagram of an embodiment of a sampling assembly according to the present invention;

FIG. 3 shows an exploded view of an embodiment of a sampling assembly according to the present invention;

FIG. 4 shows an enlarged schematic view of region A of the sampling assembly according to FIG. 3;

FIG. 5 shows a schematic view of the connection portion of the substrate to the interposer of an embodiment of a sampling assembly according to the present invention;

FIG. 6 shows an enlarged schematic view of region B according to the sampling assembly of FIG. 5; and

fig. 7 shows a schematic plan view of the connection portion of the substrate to the patch according to an embodiment of the sampling assembly of the present invention.

Wherein the figures include the following reference numerals:

1. an FFC body; 10. a substrate; 11. a first substrate sheet; 12. a second substrate sheet; 20. a bus bar; 100. a patch; 101. a narrow diameter portion; 110. a connecting strip; 120. connecting blocks; 111. a first contact surface; 112. a second contact surface.

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.

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.

Referring to fig. 1 to 7, the present invention provides a sampling assembly, including: a substrate 10; a bus bar 20; an interposer 100 provided independently of the substrate 10, one end of the interposer 100 being connected to the substrate 10, and the other end of the interposer 100 being used for connection to the bus bar 20; the interposer 100 has a narrow diameter portion 101, so that when the current on the interposer 100 reaches a predetermined fusing current, the narrow diameter portion 101 of the interposer 100 fuses.

The sampling assembly provided by the application comprises a substrate 10, a bus bar 20 and an adapter sheet 100, wherein the adapter sheet 100 and the substrate 10 are arranged independently, one end of the adapter sheet 100 is connected with the substrate 10, and the other end of the adapter sheet 100 is used for being connected with the bus bar 20; the adapter sheet 100 is provided with the narrow-diameter part 101, so that when the current on the adapter sheet 100 reaches a preset fusing current, the narrow-diameter part 101 of the adapter sheet 100 is fused, and therefore when an FFC acquisition scheme is adopted, the narrow-diameter part 101 is arranged on the adapter sheet 100 to serve as a loop fuse, so that the reliability of FFC connection is guaranteed, an external transmission cable is reliably protected, and the problem that the FFC body in the prior art cannot design the loop fuse is solved.

Specifically, the interposer 100 may be punched to form the narrow diameter portion 101, and the outer contour of the narrow diameter portion 101 may be any shape such as a circle or a rectangle.

As shown in fig. 4 and 6, the interposer 100 includes a connection bar 110 and a connection block 120, one end of the connection bar 110 is connected to the substrate 10, the other end of the connection bar 110 is connected to the connection block 120, and the connection block 120 is used for connecting to the bus bar 20; the narrow portion 101 is provided on the connecting bar 110.

Preferably, the specific material of the interposer 100 is nickel, and the specific material of the bus bar 20 is aluminum.

Specifically, the maximum flow-through sectional area of the connection bar 110 through which a current flows is smaller than the minimum flow-through sectional area of the connection block 120 through which a current flows.

In the embodiment of the present invention, the width of the contact surface of the connection block 120 contacting the bus bar 20 is greater than the maximum width of the substrate 10; the width direction of the contact surface of the connection block 120 is perpendicular to the flowing direction of the current in the connection block 120, and the width direction of the substrate 10 is perpendicular to the flowing direction of the current at the corresponding position in the substrate 10. Specifically, the width direction of the contact surface of the connection block 120 is parallel to the surface of the substrate 10 facing the interposer 100; the width direction of the substrate 10 is parallel to the surface of the substrate 10 facing the interposer 100 or coincides with the surface of the substrate 10 facing the interposer 100.

Specifically, the flow cross section of the connection bar 110 through which the current flows is rectangular; and/or the connection block 120 is a rectangular plate.

In an embodiment of the present application, a sampling assembly includes: the FFC body 1, FFC body 1 include substrate 10, first substrate board 11 and second substrate board 12, and substrate 10 is a plurality of, and a plurality of substrates 10 set up between first substrate board 11 and second substrate board 12, and first substrate board 11 and second substrate board 12 and substrate 10's size of the shape looks adaptation.

Preferably, the first substrate plate 11 and the second substrate plate 12 are PET or other insulating material, and the base material 10 is made of ultra-thin copper material.

Preferably, in order to ensure a more reliable connection form, the adhesive coating process is performed simultaneously at the pressing portion of the connecting bar 110 and the base material 10, and then the connecting block 120 of the interposer 100 and the bus bar 20 are welded by a conventional welding device, and the connecting block 120 is welded at a proper position of the bus bar 20.

The connecting block 120 of the adapter sheet 100 is connected with the bus bar 20, the connecting bar 110 of the adapter sheet 100 is connected with the base material 10, and the width of the contact surface of the connecting block 120, which is in contact with the bus bar 20, is greater than the maximum width of the base material 10, so that the welding between the base material 10 and the bus bar 20 is reliable, the problem that the welding between the base material 10 and the bus bar 20 of the FFC is unreliable is solved, and the normal use of a vehicle is ensured.

In the embodiment of the present application, the FFC body 1 is a branched tree, and one FFC body 1 includes a plurality of substrates 10 to connect with a plurality of interposer 100 through the plurality of substrates 10.

One end of the substrate 10 is connected to the interposer 100, and the other end of the substrate 10 can be connected to a corresponding connector/PCB or any other type of component.

Specifically, each substrate 10 is L-shaped, the substrate 10 includes a first substrate strip and a second substrate strip, the first substrate strip extends along the extending direction of the whole FFC body 1, the second substrate strip extends along the extending direction perpendicular to the FFC body 1, at least part of the second substrate strip coincides with at least part of the connecting strip 110, the first substrate strip and the second substrate strip are both multiple, the multiple first substrate strips are arranged at intervals along the width direction of the FFC body 1, the multiple second substrate strips are arranged at intervals along the extending direction of the FFC body 1, and/or the multiple second substrate strips are arranged in a staggered manner, and the multiple first substrate strips and the multiple second substrate strips are arranged in a one-to-one correspondence manner.

Specifically, the connecting strip 110 has a first contact portion for contacting the substrate 10, a surface of the first contact portion facing the substrate 10 is a first contact surface 111, the substrate 10 has a second contact portion for contacting the first contact portion, a surface of the second contact portion facing the connecting strip 110 is a second contact surface 112, and a difference between a width of the first contact surface 111 and a width of the second contact surface 112 ranges from 0mm to 0.2mm, so as to facilitate better fit between the first contact surface 111 and the second contact surface 112, and facilitate better fit between the first substrate plate 11 and the second substrate plate 12, so as to minimize a fit gap; the width direction of the first contact surface 111 and the width direction of the second contact surface 112 are perpendicular to the flowing direction of the current in the connecting bar 110.

In particular, the second substrate strip of the substrate 10 has a second contact surface 112.

In the manufacturing process of the FFC body 1, the first substrate plate 11, the second substrate plate 12 and the substrate 10 are pressed together through special equipment, and in the present application, at least part of the connecting strip 110 of the interposer 100 and the second substrate strip of the substrate 10 are pressed together after being attached to each other in the pressing process, and the part of the connecting strip 110 of the interposer 100 and the second substrate strip are fixed through the pressing of the two insulating layers of the first substrate plate 11 and the second substrate plate 12, so that the interposer 100 and the substrate 10 are fixed together.

Preferably, the length of the overlapping area between the first contact surface 111 and the second contact surface 112 is 5mm to 10 mm; wherein the length direction of the overlapping area is parallel to the flowing direction of the current in the connection bar 110.

In the embodiment of the present application, the connection block 120 is rectangular, and preferably, the maximum width of the connection bar 110 is one sixth to one third of the width of the connection block 120; wherein, the width direction of the connecting bar 110 is perpendicular to the flowing direction of the current in the connecting bar 110 and parallel to the substrate 10; the width direction of the connection block 120 is perpendicular to the flow direction of the current in the connection block 120 and parallel to the substrate 10.

Specifically, the minimum flow cross section of the narrow diameter portion 101 through which the current flows is the minimum flow cross section of the interposer 100 through which the current flows.

In the implementation of the embodiment of the present application, the minimum width of the narrow-diameter portion 101 needs to be calculated according to the current carrying of the interposer 100 of the fusing current, so as to ensure that the minimum cross-sectional area of the narrow-diameter portion 101 can be matched with the fusing current.

As shown in fig. 1, the present application further provides a battery module, which includes a sampling assembly, and the sampling assembly described above.

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

the sampling assembly provided by the application comprises a substrate 10, a bus bar 20 and an adapter sheet 100, wherein the adapter sheet 100 and the substrate 10 are arranged independently, one end of the adapter sheet 100 is connected with the substrate 10, and the other end of the adapter sheet 100 is used for being connected with the bus bar 20; the adapter sheet 100 is provided with the narrow-diameter part 101, so that when the current on the adapter sheet 100 reaches a preset fusing current, the narrow-diameter part 101 of the adapter sheet 100 is fused, and therefore when an FFC acquisition scheme is adopted, the narrow-diameter part 101 is arranged on the adapter sheet 100 to serve as a loop fuse, so that the reliability of FFC connection is guaranteed, an external transmission cable is reliably protected, and the problem that the FFC body in the prior art cannot design the loop fuse is solved. Moreover, the interposer 100 includes the connecting bar 110 and the connecting block 120, and the width of the contact surface of the connecting block 120, which contacts with the busbar 20, is greater than the maximum width of the base material 10, so that the base material 10 and the busbar 20 are reliably welded, the problem that the base material 10 and the busbar 20 of the FFC are not reliably welded is solved, and the normal use of the vehicle is ensured.

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

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 (10)

1. A sampling assembly, comprising:

a substrate (10);

a bus bar (20);

the connector comprises an adapter sheet (100), one end of the adapter sheet (100) is connected with the base material (10), and the other end of the adapter sheet (100) is used for being connected with the bus bar (20);

wherein the interposer (100) has a narrow diameter portion (101) such that the narrow diameter portion (101) of the interposer (100) fuses when a current on the interposer (100) reaches a predetermined fusing current.

2. The sampling assembly according to claim 1, wherein the interposer (100) comprises a connecting strip (110) and a connecting block (120), one end of the connecting strip (110) is connected with the substrate (10), the other end of the connecting strip (110) is connected with the connecting block (120), and the connecting block (120) is used for being connected with the bus bar (20); the narrow part (101) is provided on the connection bar (110).

3. The sampling assembly according to claim 2, characterized in that the maximum flow cross-sectional area of the connection strip (110) through which a current flows is smaller than the minimum flow cross-sectional area of the connection block (120) through which a current flows.

4. The sampling assembly according to claim 2, characterized in that the contact surface of the connection block (120) in contact with the busbar (20) has a width greater than the maximum width of the substrate (10); wherein the width direction of the contact surface of the connecting block (120) is perpendicular to the flowing direction of the current in the connecting block (120), and the width direction of the base material (10) is perpendicular to the flowing direction of the current at the corresponding position in the base material (10).

5. The sampling assembly of claim 2,

the cross section of the connecting strip (110) for current to flow through is rectangular; and/or

The connecting block (120) is a rectangular plate.

6. The sampling assembly according to claim 2, characterized in that the connection strip (110) has a first contact portion for contacting the substrate (10), the surface of the first contact portion facing the substrate (10) being a first contact face (111), the substrate (10) having a second contact portion for contacting the first contact portion, the surface of the second contact portion facing the connection strip (110) being a second contact face (112), the difference between the width of the first contact face (111) and the width of the second contact face (112) having a value in the range of 0mm to 0.2 mm; wherein the width direction of the first contact surface (111) and the width direction of the second contact surface (112) are perpendicular to the flow direction of the current in the connection bar (110).

7. The sampling assembly according to claim 6, characterized in that the length of the area of coincidence between the first contact surface (111) and the second contact surface (112) is 5mm to 10 mm; wherein the length direction of the overlapping area is parallel to the flowing direction of the current in the connecting strip (110).

8. The sampling assembly according to claim 2, characterized in that the connection block (120) is rectangular, the maximum width of the connection strip (110) being one sixth to one third of the width of the connection block (120); wherein the width direction of the connecting strip (110) is perpendicular to the flowing direction of the current in the connecting strip (110); the width direction of the connection block (120) is perpendicular to the flow direction of the current in the connection block (120).

9. The sampling assembly according to any one of claims 1 to 8, characterized in that the minimum flow cross section of the narrow section (101) through which the current flows is the minimum flow cross section of the patch (100) through which the current flows.

10. A battery module comprising a sampling assembly, wherein the sampling assembly is the sampling assembly of any one of claims 1 to 9.

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