CN216288866U - Sampling assembly and battery module having the 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 having the same

technical field

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

Background technique

With the rapid development of electric vehicles, the importance of batteries is becoming more and more important. At present, the module sampling in the battery uses wires or FPC (Flexible Printed Circuit board, that is, flexible printed circuit board) for signal transmission. Various approaches have proposed low-cost sampling schemes. Currently, a collection scheme of FFC (FlexibleFlat Cable, that is, flexible flat cable) is proposed, that is, an ultra-thin flat copper wire is used to cover PET (Polyethylene terephthalate, that is, thermoplastic polyester) or Made of insulating films of other materials.

Since the conductors in the FFC are ultra-thin copper wires, the reliability of laser welding or ultrasonic welding will be affected when connecting with the aluminum bars on the module. Usually, the tensile force and peeling force of welding are relatively small. There is a risk of falling off during the vibration and shock test or the use of the whole vehicle, which affects the normal use of the vehicle.

In addition, because of the characteristics of FFC, there is no way to set the loop insurance internally like FPC. At this time, when using the FFC design scheme, it is impossible to protect the external cable because there is no sampling insurance.

Utility model content

The main purpose of the present invention is to provide a sampling assembly and a battery module having the same, so as to solve the problem that the sampling assembly of the battery in the prior art is difficult to protect the external cables.

In order to achieve the above purpose, according to one aspect of the present invention, a sampling assembly is provided, comprising: a base material; a bus bar; an adapter sheet, one end of the adapter sheet is connected to the base material, and the other end of the adapter sheet is used for It is connected with the bus bar; wherein, the transfer sheet has a narrow diameter portion, so that when the current on the transfer sheet reaches a predetermined fusing current, the narrow diameter portion of the transfer sheet is fused.

Further, the adapter plate includes a connecting bar and a connecting block, one end of the connecting bar is connected with the base material, the other end of the connecting bar is connected with the connecting block, and the connecting block is used for connecting with the bus bar; the narrow diameter portion is arranged on the connecting bar.

Further, the maximum flow cross-sectional area of the connection bar for current to flow is smaller than the minimum flow cross-sectional area of the connection block for current to flow.

Further, the width of the contact surface of the connection block in contact with the bus bar is greater than the maximum width of the base material; wherein, the width direction of the contact surface of the connection block is perpendicular to the flow direction of the current in the connection block, and the width direction of the base material is perpendicular. The flow direction of the current at the corresponding position in the substrate.

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

Further, the connecting strip has a first contact portion for contacting with the base material, the surface of the first contact portion facing the base material is a first contact surface, and the base material has a second contact portion for contacting with the first contact portion The contact portion, the surface of the second contact portion facing the connecting strip is the second contact surface, and the value range of the difference between the width of the first contact surface and the width of the second contact surface is 0 mm to 0.2 mm; The width direction of the contact surface and the width direction of the second contact surface are both perpendicular to the flow direction of the current in the connecting bar.

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

Further, the connection block is a rectangle, and the maximum width of the connection bar is one-sixth to one-third of the width of the connection block; wherein, the width direction of the connection bar is perpendicular to the flow direction of the current in the connection bar; The width direction is perpendicular to the flow direction of the current in the connection block.

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

According to another aspect of the present invention, a battery module is provided, which includes a sampling assembly, and the sampling assembly is the above sampling assembly.

Applying the technical solution of the present utility model, the sampling assembly provided by the present application includes a base material, a bus bar and an adapter sheet, the adapter sheet and the base material are arranged independently of each other, one end of the adapter sheet is connected with the base material, and the The other end is used to connect with the bus bar; wherein, the adapter plate has a narrow-diameter portion, so that when the current on the adapter plate reaches a predetermined fusing current, the narrow-diameter portion of the adapter plate is fused. In this way, when the FFC acquisition scheme is adopted , by setting the narrow diameter part on the adapter sheet as a loop insurance to ensure the reliability of the FFC connection, so that the external transmission cable can be reliably protected, and the problem that the FFC body cannot be designed with a loop insurance in the prior art is solved.

Description of drawings

The accompanying drawings forming a part of the present application are used to provide further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached image:

FIG. 1 shows a schematic diagram of the position of the sampling assembly on the battery module according to the 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;

Figure 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 the area A of the sampling assembly according to FIG. 3;

5 shows a schematic diagram of the connection between the connection part of the base material and the adapter sheet according to the embodiment of the sampling assembly of the present invention;

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

7 shows a schematic plan view of the connection between the connection part of the base material and the adapter sheet according to the embodiment of the sampling assembly of the present invention.

Wherein, the above-mentioned drawings include the following reference signs:

1. FFC body; 10. Base material; 11. First base material plate; 12. Second base material plate; connection block; 111, the first contact surface; 112, the second contact surface.

Detailed ways

It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other in the case of no conflict. The present utility model will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

It should be noted that the terminology used herein is for the purpose of describing specific embodiments only, and is not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural as well, furthermore, it is to be understood that when the terms "comprising" and/or "including" are used in this specification, it indicates that There are features, steps, operations, devices, components and/or combinations thereof.

Please refer to FIG. 1 to FIG. 7 , the present invention provides a sampling assembly, including: a base material 10 ; a bus bar 20 ; The other end of the transfer sheet 100 is used to connect with the bus bar 20; wherein, the transfer sheet 100 has a narrow diameter portion 101, so that when the current on the transfer sheet 100 reaches a predetermined fusing current, the transfer sheet 100 The narrow-diameter portion 101 is fused.

The sampling assembly provided by the present application includes a substrate 10 , a bus bar 20 and an adapter plate 100 . The adapter plate 100 and the substrate 10 are arranged independently of each other, and one end of the adapter plate 100 is connected to the substrate 10 . The other end is used to connect with the bus bar 20; wherein, the adapter plate 100 has a narrow diameter portion 101, so that when the current on the adapter plate 100 reaches a predetermined fusing current, the narrow diameter portion 101 of the adapter plate 100 is fused, so that, When the FFC acquisition scheme is adopted, the narrow diameter portion 101 is provided on the adapter plate 100 as a loop insurance to ensure the reliability of the FFC connection, so that the external transmission cable can be reliably protected, which solves the problem of the FFC in the prior art. The main body cannot design the problem of loop insurance.

Specifically, the adapter sheet 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 FIG. 6 , the adapter sheet 100 includes a connecting bar 110 and a connecting block 120. One end of the connecting bar 110 is connected to the substrate 10, and the other end of the connecting bar 110 is connected to the connecting block 120. The connecting block 120 is used for Connected with the bus bar 20; the narrow diameter portion 101 is arranged on the connecting bar 110.

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

Specifically, the maximum flow cross-sectional area of the connection bar 110 for current to flow is smaller than the minimum flow cross-sectional area of the connection block 120 for current to flow.

In the embodiment of the present invention, the width of the contact surface of the connection block 120 in contact with the bus bar 20 is greater than the maximum width of the substrate 10 ; wherein, the width direction of the contact surface of the connection block 120 is perpendicular to the width direction of the connection block 120 As for the current flow direction, the width direction of the base material 10 is perpendicular to the flow direction of the current at the corresponding position in the base material 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 the The surfaces facing the adapter sheet 100 are coincident with each other.

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

In the embodiment of the present application, the sampling assembly includes: an FFC body 1 , the FFC body 1 includes a substrate 10 , a first substrate plate 11 and a second substrate plate 12 , the substrates 10 are multiple, and the substrates 10 are multiple It is arranged between the first substrate plate 11 and the second substrate plate 12 , and the first substrate plate 11 and the second substrate plate 12 are adapted to the shape and size of the substrate 10 .

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

Preferably, in order to ensure a more reliable connection form, gluing is performed at the pressing part of the connection strip 110 and the base material 10 at the same time, and then the connection block 120 of the adapter sheet 100 and the bus bar 20 are welded by conventional welding equipment, namely Yes, the connection block 120 is welded at a suitable position of the bus bar 20 .

The connecting blocks 120 of the transition piece 100 are connected to the bus bars 20 , and the connecting bars 110 of the transition piece 100 are connected to the substrate 10 . The width makes the welding of the base material 10 and the bus bar 20 reliable, and solves the problem of unreliable welding of the base material 10 and the bus bar 20 of the FFC, thereby ensuring the normal use of the vehicle.

In the embodiment of the present application, the FFC body 1 is in a bifurcated tree shape, and one FFC body 1 includes a plurality of substrates 10 , so as to be connected with a plurality of adapter sheets 100 through the plurality of substrates 10 .

One end of the base material 10 is connected to the adapter sheet 100 , and the other end of the base material 10 can be connected to a corresponding connector/PCB or any other component.

Specifically, each base material 10 is L-shaped, the base material 10 includes a first base material strip and a second base material strip, the first base material strip extends along the extending direction of the entire FFC body 1, and the second base material strip extends along the vertical direction Extending in the extending direction of the FFC body 1 , at least part of the second substrate strip and at least part of the connecting strip 110 are overlapped with each other, the first substrate strip and the second substrate strip are multiple, and a plurality of first substrate strips The plurality of second substrate strips are arranged at intervals along the width direction of the FFC body 1, and the plurality of second substrate strips are arranged at intervals along the extending direction of the FFC body 1, and/or the second substrate strips are arranged in a staggered manner. The second substrate strips are arranged in a one-to-one correspondence.

Specifically, the connecting bar 110 has a first contact portion for contacting the substrate 10 , the surface of the first contact portion facing the substrate 10 is a first contact surface 111 , and the substrate 10 has a first contact portion for contacting the substrate 10 . The second contact portion in contact, the surface of the second contact portion facing the connecting bar 110 is the second contact surface 112, and the value range of the difference between the width of the first contact surface 111 and the width of the second contact surface 112 is 0mm to 0.2mm, so as to facilitate better bonding between the first contact surface 111 and the second contact surface 112, and to facilitate better pressing between the first substrate plate 11 and the second substrate plate 12, The pressing gap is minimized; wherein, the width direction of the first contact surface 111 and the width direction of the second contact surface 112 are both perpendicular to the flow direction of the current in the connection bar 110 .

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

During 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 by special equipment, and the application requires that the adapter plate be pressed together during the pressing. At least part of the connecting strip 110 of the base material 100 is laminated with the second base material strip of the base material 10 and then pressed together in the first base material board 11 and the second base material board 12, through the first base material board 11 and the second base material board 12. The pressing of the two insulating layers of the base material plate 12 fixes part of the connecting strip 110 and the second base material strip of the transition sheet 100 , thereby fixing the transition sheet 100 and the base material 10 together.

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

In the embodiment of the present application, the connection block 120 is rectangular, 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 connection bar 110 is perpendicular to The flow direction of the current in the connection bar 110 is 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 electric current flows is the minimum flow section through which the electric current of the adapter sheet 100 flows.

In the specific implementation process 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 adapter piece 100 for fusing current, so as to ensure that the minimum cross-sectional area of the narrow-diameter portion 101 can match the fusing current.

As shown in FIG. 1 , the present application further provides a battery module, including a sampling assembly, the sampling assembly mentioned above.

From the above description, it can be seen that the above-mentioned embodiments of the present utility model achieve the following technical effects:

The sampling assembly provided by the present application includes a substrate 10 , a bus bar 20 and an adapter plate 100 . The adapter plate 100 and the substrate 10 are arranged independently of each other, and one end of the adapter plate 100 is connected to the substrate 10 . The other end is used to connect with the bus bar 20; wherein, the adapter plate 100 has a narrow diameter portion 101, so that when the current on the adapter plate 100 reaches a predetermined fusing current, the narrow diameter portion 101 of the adapter plate 100 is fused, so that, When the FFC acquisition scheme is adopted, the narrow diameter portion 101 is provided on the adapter plate 100 as a loop insurance to ensure the reliability of the FFC connection, so that the external transmission cable can be reliably protected, which solves the problem of the FFC in the prior art. The main body cannot design the problem of loop insurance. In addition, the adapter sheet 100 includes a connecting bar 110 and a connecting block 120. The width of the contact surface of the connecting block 120 and the bus bar 20 of the connecting block 120 is greater than the maximum width of the base material 10, so that the base material 10 and the bus bar 20 have a gap between them. The welding is reliable, which solves the problem of unreliable welding between the base material 10 of the FFC and the bus bar 20, thereby ensuring the normal use of the vehicle.

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 invention unless specifically stated otherwise. Meanwhile, it should be understood that, for the convenience of description, the dimensions of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods, and apparatus should be considered part of the authorized description. In all examples shown and discussed herein, any specific value should be construed as illustrative only and not as limiting. Accordingly, other examples of exemplary embodiments may have different values. It should be noted that like numerals and letters refer to like items in the following figures, so once an item is defined in one figure, it does not require further discussion in subsequent figures.

In the description of the present invention, it should be understood that orientation words such as "front, rear, top, bottom, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" etc. The orientation or positional relationship is usually based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and these orientations do not indicate and imply the indicated device unless otherwise stated. Or elements must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be construed as a limitation on the protection scope of the present invention; the orientation words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. For those skilled in the art, the present utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (10)

1. a sampling assembly, is characterized in that, comprises: substrate (10); busbar (20); 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 connecting with the bus bar (20); Wherein, the adapter plate (100) has a narrow-diameter portion (101), so that when the current on the adapter plate (100) reaches a predetermined fusing current, the narrow-diameter portion (101) of the adapter plate (100) 101) Fusing. 2 . The sampling assembly according to claim 1 , wherein the adapter plate ( 100 ) comprises a connecting bar ( 110 ) and a connecting block ( 120 ), and one end of the connecting bar ( 110 ) is connected to the base material (10) is connected, the other end of the connecting bar (110) is connected with the connecting block (120), and the connecting block (120) is used for connecting with the bus bar (20); the narrow diameter portion (101) is arranged on the connecting bar (110). 3. The sampling assembly according to claim 2, characterized in that, the maximum flow cross-sectional area of the connection bar (110) for current to flow is smaller than the minimum flow cross-section of the connection block (120) for current to flow area. 4. The sampling assembly according to claim 2, wherein the width of the contact surface of the connecting block (120) that is in contact with the bus bar (20) is greater than the maximum width of the base material (10) wherein, the width direction of the contact surface of the connection block (120) is perpendicular to the flow direction of the current in the connection block (120), and the width direction of the base material (10) is perpendicular to the base material (10) ) in the flow direction of the current at the corresponding position. 5. The sampling assembly of claim 2, wherein The cross section of the connection bar (110) for the current to flow through is rectangular; and/or The connecting block (120) is a rectangular plate. 6. The sampling assembly according to claim 2, wherein the connecting strip (110) has a first contact portion for contacting the substrate (10), and the first contact portion is oriented in the direction of the The surface of the base material (10) is a first contact surface (111), the base material (10) has a second contact portion for contacting the first contact portion, and the second contact portion faces The surface of the connecting strip (110) is the second contact surface (112), and the value range of the difference between the width of the first contact surface (111) and the width of the second contact surface (112) is 0 mm 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 both perpendicular to the flow direction of the current in the connection bar (110). 7. The sampling assembly according to claim 6, wherein the length of the overlapping area between the first contact surface (111) and the second contact surface (112) is 5mm to 10mm; wherein, the The length direction of the overlapping area is parallel to the flow direction of the current in the connecting bar (110). 8 . The sampling assembly according to claim 2 , wherein the connecting block ( 120 ) is rectangular, and the maximum width of the connecting bar ( 110 ) is one sixth of the width of the connecting block ( 120 ). 9 . One to one third; wherein, the width direction of the connection bar (110) is perpendicular to the flow direction of the current in the connection bar (110); the width direction of the connection block (120) is perpendicular to the connection The direction of current flow within the block (120). 9. The sampling assembly according to any one of claims 1 to 8, characterized in that, the minimum flow cross-section through which the supply current of the narrow-diameter portion (101) flows is the supply of electricity to the adapter plate (100). The minimum flow cross-section through which the flow flows. 10 . A battery module, comprising a sampling assembly, wherein the sampling assembly is the sampling assembly according to any one of claims 1 to 9 .

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