Sampling assembly, battery module and battery pack

Abstract

The utility model relates to power battery technical field especially, and it is a kind of sampling assembly, battery module and battery package.The sampling assembly includes: insulating support, the first clamping structure is equipped on the insulating support;Sampling terminal, the sampling terminal has second clamping structure, the sampling terminal is suitable for along the thickness direction with the insulating support and the insulating support assembly, and the sampling terminal with the insulating support through the second clamping structure with the first clamping structure is detachably connected.Among them, the beneficial effect includes: sampling terminal and insulating terminal are detachably connected by the cooperation of first clamping structure and second clamping structure, without using hot riveting process, can repeatedly disassemble and not damage original structure, dismounting is simple, it is convenient to maintain, it is favorable to promote production efficiency and reduce production cost.

Description

Technical Field

[0001] This utility model relates to the field of power battery technology, and in particular to a sampling component, a battery module and a battery pack. Background Technology

[0002] With the rapid development of new energy vehicles, the importance of power batteries as the power source of the whole vehicle is self-evident. During the use of power batteries, it is necessary to monitor the voltage of the cells in real time to ensure that all cells are working normally.

[0003] The core components of a power battery pack include battery modules, a battery management system, a casing, and a power distribution box. The battery module is the power source and is composed of several individual cells connected in series and parallel. The main types of cells are cylindrical, prismatic, and pouch cells. In particular, pouch cells have advantages such as light weight and high energy density, and have been widely used. The internal sampling methods of pouch modules include flexible printed circuit (FPC) assemblies or wire harness assemblies. Compared with FPC assemblies, wire harness assemblies are cheaper, simpler to manufacture, and more reliable. Wire harness assemblies include sub-components such as plastic brackets, sampling terminals, connectors, and wire harnesses.

[0004] Currently, the sampling terminals and plastic brackets are fixed using a hot riveting process, which is cumbersome, time-consuming, and costly. After hot riveting, the sampling terminals cannot be disassembled or repaired. If abnormalities occur during processing or use, the materials will be scrapped, resulting in high costs. Summary of the Invention

[0005] This utility model provides a sampling component, a battery module, and a battery pack to solve the technical problems of difficult and costly disassembly and assembly of sampling terminals, thereby improving production efficiency and reducing costs.

[0006] To achieve the above and other related objectives, this utility model provides a sampling component, comprising:

[0007] An insulating bracket, wherein the insulating bracket is provided with a first snap-fit ​​structure;

[0008] The sampling terminal has a second snap-fit ​​structure, the sampling terminal is adapted to be assembled with the insulating support along the thickness direction of the insulating support, and the sampling terminal and the insulating support are detachably connected to the first snap-fit ​​structure through the second snap-fit ​​structure.

[0009] In one embodiment of the present invention, the first snap-fit ​​structure includes a snap-fit ​​hole, the snap-fit ​​hole having an entrance section and a limiting section distributed along the thickness direction of the insulating support, the width d1 of the entrance section being smaller than the width d2 of the limiting section, and the snap-fit ​​hole having a limiting step surface; the second snap-fit ​​structure includes a snap-fit ​​part, the snap-fit ​​part having a spring piece, the spring piece being adapted to generate elastic deformation when the snap-fit ​​part passes through the entrance section, and being adapted to recover deformation within the limiting section and snap with the limiting step surface.

[0010] In one embodiment of the present invention, at least a portion of the snap-fit ​​hole extends through the insulating bracket along the thickness direction of the insulating bracket.

[0011] In one embodiment of the present invention, in the length direction of the insulating bracket, the width d1 of the entrance section is smaller than the width d2 of the limiting section; the spring piece is raised along the length direction of the insulating bracket.

[0012] In one embodiment of the present invention, the snap-fit ​​portion is provided with a plurality of spring tabs, the plurality of spring tabs are spaced apart along the height direction of the insulating bracket, and two adjacent spring tabs are raised in opposite directions along the length direction of the insulating bracket.

[0013] In one embodiment of the present invention, the limiting segment includes a main hole, a portion of which extends along the length direction of the insulating bracket to form a plurality of limiting grooves spaced apart along the height direction of the insulating bracket, the plurality of limiting grooves corresponding to a plurality of spring pieces, and a portion of the wall surface of the limiting groove is formed as the limiting step surface.

[0014] In one embodiment of the present invention, in the height direction of the insulating bracket, the width d1 of the entrance section is smaller than the width d2 of the limiting section; the spring piece is raised along the height direction of the insulating bracket.

[0015] In one embodiment of the present invention, a limiting post is provided in the snap-fit ​​hole. The limiting post includes a post body and a post cap. The side wall of the post body cooperates with a part of the side wall of the snap-fit ​​hole to define the limiting section. The side wall of the post cap cooperates with another part of the side wall of the snap-fit ​​hole to define the entrance section. A portion of the end face of the post cap connected to the post body is formed as the limiting step surface.

[0016] In one embodiment of the present invention, the snap-fit ​​hole has two first sidewalls distributed along the height direction of the insulating bracket, the column is located between the two first sidewalls and has two second sidewalls distributed along the height direction of the insulating bracket, the second sidewalls and the first sidewalls opposite to them cooperate to define the limiting segment.

[0017] In one embodiment of the present invention, the second snap-fit ​​structure includes two snap-fit ​​portions distributed along the height direction of the insulating bracket and arranged opposite to each other. Partial bending of the two snap-fit ​​portions forms spring tabs that are raised along the height direction of the insulating bracket. The two spring tabs of the two snap-fit ​​portions are arranged opposite to each other in a V-shape.

[0018] In one embodiment of the present invention, the insulating bracket further includes a limiting beam, which is disposed in the snap-fit ​​hole to limit the depth of the second snap-fit ​​structure extending into the snap-fit ​​hole, and the limiting beam is connected to the limiting post.

[0019] In one embodiment of the present invention, the sampling terminal has a first end and a second end distributed along the height direction of the insulating bracket. A portion of the first end of the sampling terminal is formed as a tab welding area. The second end of the sampling terminal extends to both ends along the length direction of the insulating bracket to form an assembly area and a wire harness crimping area, respectively. A portion of the assembly area is bent along the thickness direction of the insulating bracket to form the second snap-fit ​​structure.

[0020] To achieve the above and other related objectives, this utility model also provides a battery module, including the sampling component described above.

[0021] To achieve the above and other related objectives, this utility model also provides a battery pack, including the battery module as described above.

[0022] The beneficial effects of this utility model are as follows: The sampling component, battery module and battery pack proposed by this utility model have a sampling terminal and an insulating terminal that are detachably connected by a first snap-fit ​​structure and a second snap-fit ​​structure. This eliminates the need for a hot riveting process, allows for repeated disassembly without damaging the original structure, and is simple to assemble and disassemble and easy to maintain. This is beneficial for improving production efficiency and reducing production costs. Attached Figure Description

[0023] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0024] In the attached diagram:

[0025] Figure 1 A partial structural schematic diagram of the sampling component provided in Embodiment 1 of this utility model;

[0026] Figure 2 for Figure 1 The main view of the mid-sample component;

[0027] Figure 3 for Figure 2 Sectional view at point AA;

[0028] Figure 4 for Figure 2 Sectional view at point BB;

[0029] Figure 5 for Figure 1 Rear view of the mid-sample component;

[0030] Figure 6 for Figure 5 A magnified schematic diagram of part C in the middle;

[0031] Figure 7 for Figure 5 A magnified schematic diagram of part D in the middle;

[0032] Figure 8 for Figure 1 A first-person perspective explosion diagram of the central insulating support;

[0033] Figure 9 for Figure 8 A magnified schematic diagram of part E in the middle;

[0034] Figure 10 for Figure 8 A magnified schematic diagram of a local part of F;

[0035] Figure 11 for Figure 1 A second-view explosion diagram of the central insulating support;

[0036] Figure 12 for Figure 11 A magnified schematic diagram of a local area G in the middle;

[0037] Figure 13 for Figure 11 A magnified schematic diagram of a local area H in the middle;

[0038] Figure 14 A schematic diagram of the sampling terminal of the sampling component provided by this utility model in one embodiment;

[0039] Figure 15 for Figure 14 Front view of the sampling terminal;

[0040] Figure 16 for Figure 14 Side view of the sampling terminal;

[0041] Figure 17 for Figure 14 Bottom view of the sampling terminal;

[0042] Figure 18A schematic diagram of the sampling terminal of the sampling component provided by this utility model in Embodiment 2;

[0043] Figure 19 for Figure 18 Rear view of the sampling terminal;

[0044] Figure 20 for Figure 18 Side view of the sampling terminal;

[0045] Figure 21 for Figure 18 Top view of the sampling terminal;

[0046] Figure 22 A partial structural schematic diagram of the insulating support for the sampling component of Embodiment 2 provided by this utility model;

[0047] Figure 23 for Figure 22 A partial cross-sectional view of the connection between the insulating support and the sampling terminal;

[0048] Figure 24 This is a schematic diagram of the structure of an embodiment of the battery module provided by this utility model.

[0049] The attached figures are labeled as follows:

[0050] Insulating bracket 1, snap-fit ​​hole 11, inlet section 111, limiting section 112, limiting groove 1121, main body hole 1122, first side wall 113, limiting step surface 12, limiting post 13, post body 131, second side wall 1311, post cap 132, inclined surface 1321, limiting beam 14, sampling terminal 2, assembly area 21, snap-fit ​​part 211, spring piece 2111, wire harness crimping area 22, electrode welding area 23, cell electrode 3, wire harness 4. Detailed Implementation

[0051] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0052] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. The drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0053] In the following description, numerous details are explored to provide a more thorough explanation of embodiments of the present invention. However, it will be apparent to those skilled in the art that embodiments of the present invention may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring embodiments of the present invention.

[0054] See Figure 1 and Figure 24 In some alternative embodiments, the present invention provides a battery pack that includes a battery module.

[0055] See Figure 1 and Figure 24 In some alternative embodiments, the present invention provides a battery module including a sampling component.

[0056] Optionally, the battery module also includes multiple battery cells stacked along a first direction. The battery cells include pouch cells, which have a cell body and cell tabs 3.

[0057] See Figure 1 , Figure 14 , Figure 15 , Figure 18 , Figure 19 and Figure 24 In some optional embodiments, the present invention provides a sampling assembly, which includes an insulating bracket 1 and a sampling terminal 2; in addition to the above-mentioned components, the sampling assembly may also include a wire harness 4. The insulating bracket 1 is provided with a first snap-fit ​​structure, and the sampling terminal 2 has a second snap-fit ​​structure. The sampling terminal 2 is adapted to be assembled with the insulating bracket 1 along the thickness direction of the insulating bracket 1. That is, the sampling terminal 2 and the insulating bracket 1 can move closer together along the thickness direction of the insulating bracket 1 to achieve connection or move away to achieve disassembly, or the assembly direction of the sampling terminal 2 and the insulating bracket 1 is the same as the thickness direction of the insulating bracket 1; and the sampling terminal 2 and the insulating bracket 1 are detachably connected to the first snap-fit ​​structure through the second snap-fit ​​structure.

[0058] Optionally, the sampling terminal 2 and the insulating bracket 1 are connected to the first snap-fit ​​structure via a second snap-fit ​​structure, making disassembly and assembly simple and convenient.

[0059] Optionally, the insulating support 1 may include a plastic support.

[0060] Optionally, sampling terminal 2 includes a nickel plate.

[0061] Optionally, the sampling terminal 2 has a first end and a second end distributed along the height direction of the insulating support 1. A portion of the first end of the sampling terminal 2 is formed as a tab welding area 23, which is used to weld to the battery cell tab 3 for electrical connection, thereby enabling voltage sampling of the battery cell. The sampling terminal 2 also has an assembly area 21 and a wire harness crimping area 22, which are distributed along the length direction of the insulating support 1. The second end of the sampling terminal 2 extends to both ends along the length direction of the insulating support 1 to form the assembly area 21 and the wire harness crimping area 22, respectively. A portion of the assembly area 21 is bent along the thickness direction of the insulating support 1 to form a second snap-fit ​​structure. When the sampling terminal 2 is assembled with the insulating support 1, the wire harness crimping area 22 can press down on the wire harness 4, thereby fixing the wire harness 4. The sampling terminal 2 has a tab welding area 23, a wire harness crimping area 22 and an assembly area 21, which enables the sampling terminal 2 to be aligned with the battery cell tab 3 and fixed to the wire harness 4 when it is assembled with the insulating bracket 1. This simplifies the assembly process and improves assembly accuracy and efficiency.

[0062] In this utility model, the length direction of the insulating support 1, the thickness direction of the battery cell, the stacking direction of multiple battery cells and the first direction are the same, that is, the X direction in the figure; the thickness direction of the insulating support 1 is the same as the length direction of the battery cell, that is, the Y direction in the figure; the height direction of the insulating support 1 is the same as the height direction of the battery cell, that is, the Z direction in the figure.

[0063] In the above embodiment, the sampling component, the insulating bracket 1 and the sampling terminal 2 are connected by a first snap-fit ​​structure and a second snap-fit ​​structure to achieve a detachable connection. The sampling terminal 2 and the insulating bracket 1 can be connected and disassembled without the need for hot riveting. It can be repeatedly disassembled without damaging the original structure, which helps to avoid material waste and reduce the cost of scrapping defective products, maintenance costs and processing costs.

[0064] See Figures 2 to 14In some optional embodiments, the first snap-fit ​​structure includes a snap-fit ​​hole 11, which has an inlet section 111 and a limiting section 112 distributed along the thickness direction of the insulating support 1. The width d1 of the inlet section 111 is smaller than the width d2 of the limiting section 112, and the snap-fit ​​hole 11 has a limiting step surface 12. The second snap-fit ​​structure includes a snap-fit ​​part 211, which has a spring piece 2111. The spring piece 2111 is adapted to undergo elastic deformation when the snap-fit ​​part 211 passes through the inlet section 111, and is adapted to recover its deformation and snap-fit ​​with the limiting step surface 12 within the limiting section 112. That is, the snap-fit ​​part 211 enters the snap-fit ​​hole 11 from the narrower inlet section 111, and the spring piece 2111 is compressed and undergoes elastic deformation. When the snap-fit ​​part 211 continues to extend into the snap-fit ​​hole 11 until the spring piece 2111 reaches the wider limiting section 112, the compression on the spring piece 2111 disappears, and the spring piece 2111 recovers its deformation and snaps with the limiting step surface 12. The limiting step surface 12 restricts the snap-fit ​​part 211 from disengaging from the snap-fit ​​hole 11, thereby realizing the snap-fit ​​between the snap-fit ​​part 211 and the snap-fit ​​hole 11, and thus realizing the connection between the sampling terminal 2 and the insulating support 1.

[0065] Optionally, at least a portion of the snap-fit ​​hole 11 extends through the insulating support 1 along its thickness direction. That is, a portion of the snap-fit ​​hole 11 can be a through-hole structure, and a portion can be a blind-hole structure. For example, a portion of the limiting section 112 is a blind-hole structure to form a limiting step surface 12 that snaps into the spring piece 2111. Another portion of the limiting section 112 is connected to the entrance section 111 to form a through-hole structure. This design of the snap-fit ​​hole 11 is not only simple in structure and easy to manufacture, but also facilitates the insertion of a disassembly tool (e.g., a metal sheet) into the snap-fit ​​hole 11 from the end of the limiting section 112 away from the entrance section 111 to flatten the spring piece 2111, causing the spring piece 2111 to disengage from the limiting step surface 12. Simultaneously, pulling up the sampling terminal 2 causes the snap-fit ​​part 211 to exit from the entrance section 111 of the snap-fit ​​hole 11, thus achieving the disassembly of the sampling terminal 2. The operation is simple and convenient.

[0066] Optionally, the number of spring clips 2111 provided on each snap-fit ​​part 211 may be one or more.

[0067] The sampling component in the above embodiment has a reliable connection between the snap-fit ​​hole 11 and the snap-fit ​​part 211, a simple structure, and is easy to assemble and disassemble, which helps to improve assembly efficiency and reduce costs.

[0068] See Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 8 , Figure 9 , Figure 11 , Figure 12 , Figures 14 to 17In some optional embodiments, in the length direction of the insulating bracket 1, the width d1 of the inlet section 111 is smaller than the width d2 of the limiting section 112. The spring piece 2111 is raised along the length direction of the insulating bracket 1 so that when the snap-fit ​​part 211 is inserted into the snap-fit ​​hole 11, the spring piece 2111 is flattened in the inlet section 111 and generates elastic deformation. When the spring piece 2111 reaches the limiting section 112, it recovers its deformation and snaps into the limiting step surface 12.

[0069] Optionally, the snap-fit ​​part 211 is provided with multiple spring tabs 2111. The multiple spring tabs 2111 are distributed at intervals along the height direction of the insulating bracket 1, and two adjacent spring tabs 2111 are tilted in opposite directions along the length direction of the insulating bracket 1. That is to say, the snap-fit ​​part 211 is provided with spring tabs 2111 on both sides along the length direction of the insulating bracket 1. This structural design allows both sides of the snap-fit ​​part 211 to snap into the insulating bracket 1 through the corresponding spring tabs 2111, which helps to avoid unilateral force and disperses the force points of the snap-fit, which helps to improve the stability and reliability of the connection and makes the overall structure more stable. In addition, the multiple spring tabs 2111 are arranged at intervals. Compared with multiple smaller spring tabs connected to form a larger spring tab, the multiple smaller spring tabs of the snap-fit ​​part 211 are more likely to undergo elastic deformation during assembly, making the assembly operation easier. Furthermore, the angle at which the spring piece 2111 is raised is α, that is, the angle between the spring piece 2111 and the body of the latching part 211 is α, 125°≤α≤135°, for example, α can be any value such as 125°, 130° or 135°.

[0070] Optionally, the snap-fit ​​part 211 is provided with three spring pieces 2111, which are arranged in a triangular pattern, which helps to improve the stability and reliability of the connection between the snap-fit ​​part 211 and the snap-fit ​​hole 11.

[0071] Optionally, the limiting section 112 includes a main hole 1122. A portion of the main hole 1122 extends along the length of the insulating support 1 to form multiple limiting grooves 1121 spaced apart along the height of the insulating support 1. The multiple limiting grooves 1121 correspond to multiple spring pieces 2111, and a portion of the wall surface of the limiting groove 1121 is formed as a limiting step surface 12. The cooperation between the spring piece 2111 and the limiting groove 1121 not only enables locking but also confines the spring piece 2111 within the limiting groove 1121, which helps to reduce the range of spring piece 2111 wobbling. This helps to prevent large displacement of the sampling terminal 2 during use and improves the stability and sampling accuracy of the overall structure. Furthermore, in the length direction of the insulating support 1, the width of the main hole 1122 is equal to the width d1 of the entrance section 111.

[0072] See Figure 2 , Figure 4 , Figure 5 , Figure 7 , Figure 8 , Figure 10 , Figure 11 , Figure 13 , Figures 18 to 21 In some optional embodiments, in the height direction of the insulating bracket 1, the width d1 of the inlet section 111 is smaller than the width d2 of the limiting section 112. The spring piece 2111 is raised along the height direction of the insulating bracket 1 so that when the snap-fit ​​part 211 is inserted into the snap-fit ​​hole 11, the spring piece 2111 is flattened in the inlet section 111 and generates elastic deformation. When the spring piece 2111 reaches the limiting section 112, it recovers its deformation and snaps into the limiting step surface 12.

[0073] Optionally, a limiting post 13 is provided inside the snap-fit ​​hole 11. The limiting post 13 includes a post body 131 and a post cap 132. The side wall of the post body 131 cooperates with a part of the side wall of the snap-fit ​​hole 11 to define a limiting section 112. The side wall of the post cap 132 cooperates with another part of the side wall of the snap-fit ​​hole 11 to define an entrance section 111. A portion of the end face of the post cap 132 connected to the post body 131 is formed as a limiting step surface 12. The chamfer of the post cap 132 forms a beveled surface 1321, which facilitates the snap-fit ​​part 211 to be inserted into the snap-fit ​​hole 11 from the entrance section 111, thus reducing assembly difficulty. Furthermore, the cross-section of the limiting post 13 in the thickness direction of the insulating bracket 1 is T-shaped, that is, the cross-section of the limiting post 13 in the Y direction in the figure is T-shaped.

[0074] Optionally, the snap-fit ​​hole 11 has two first sidewalls 113 distributed along the height direction of the insulating support 1, and the column 131 is located between the two first sidewalls 113 and has two second sidewalls 1311 distributed along the height direction of the insulating support 1. The second sidewalls 1311 and their opposite first sidewalls 113 cooperate to define a limiting segment 112. Further, the two first sidewalls 113 cooperate with the two second sidewalls 1311 respectively to define two limiting segments 112, or in other words, the column 131 divides part of the space of the snap-fit ​​hole 11 into two limiting segments 112.

[0075] Optionally, the second snap-fit ​​structure includes two snap-fit ​​portions 211 distributed along the height direction of the insulating support 1 and arranged opposite to each other. Partial bending of the two snap-fit ​​portions 211 forms spring tabs 2111 that protrude along the height direction of the insulating support 1. The two spring tabs 2111 of the two snap-fit ​​portions 211 are arranged opposite each other in a V-shape. Further, the included angle between the spring tab 2111 and the body of the snap-fit ​​portion 211 is β, where 15°≤β≤25°. For example, β can be any value among 15°, 20°, or 25°.

[0076] See Figure 22 and Figure 23In some optional embodiments, the insulating bracket 1 further includes a limiting beam 14, which is disposed within the snap-fit ​​hole 11 to limit the depth to which the second snap-fit ​​structure extends into the snap-fit ​​hole 11, and the limiting beam 14 is connected to the limiting post 13. By providing the limiting beam 14, not only can the depth of the snap-fit ​​part 211 inserted into the snap-fit ​​hole 11 be limited to avoid over-insertion of the sampling terminal 2, but the structural strength of the limiting post 13 can also be increased, thereby improving the overall structural strength.

[0077] During assembly, the snap-fit ​​part 211 extends into the snap-fit ​​hole 11 along the thickness direction of the insulating bracket 1. When the snap-fit ​​part 211 passes through the entrance section 111, the spring piece 2111 is compressed and undergoes elastic deformation. When the bottom of the snap-fit ​​part 211 contacts the limiting beam 14, the snap-fit ​​part 2111 reaches the snap-fit ​​position, and the spring piece 2111 enters the limiting section 112. The spring piece 2111 recovers its deformation and snaps into the limiting step surface 12, completing the assembly. During disassembly, a disassembly tool can be used to move the two spring pieces 2111 of the two snap-fit ​​parts 211 in opposite directions along the height direction of the insulating bracket 1. The two spring pieces 2111 undergo elastic deformation and disengage from the limiting step surface 12, that is, disengage from the limiting post 13. At the same time, the sampling terminal 2 is pulled up so that the snap-fit ​​part 211 exits from the entrance section 111 of the snap-fit ​​hole 11, realizing the disassembly of the sampling terminal 2. The operation is simple and convenient.

[0078] See Figures 2 to 4 In some optional embodiments, there may be multiple sampling terminals 2, which are distributed along a first direction to connect with the cell tabs 3 of the corresponding cell for sampling.

[0079] Optionally, the insulating bracket 1 may have multiple snap-fit ​​holes 11, each corresponding to a plurality of sampling terminals 2. These multiple sampling terminals 2 can be any of the sampling terminals 2 mentioned in the preceding embodiments; that is, the multiple sampling terminals 2 in the same sampling component can all be sampling terminals 2 from the same embodiment. Alternatively, the multiple sampling terminals 2 in the same sampling component can be partly sampling terminals 2 from one embodiment and partly sampling terminals 2 from another embodiment, and can be selected and combined as needed. The snap-fit ​​holes 11 and sampling terminals 2 can be configured accordingly.

[0080] The sampling component, battery module, and battery pack of this utility model, with the first snap-fit ​​structure and the second snap-fit ​​structure working together, realize the detachable connection between the insulating bracket 1 and the sampling terminal 2 without the need for hot riveting process. The sampling terminal 2 is easy to disassemble and install, and easy to replace and maintain, which helps to reduce costs and improve production efficiency.

[0081] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A sampling component, characterized in that, include: An insulating bracket, wherein the insulating bracket is provided with a first snap-fit ​​structure; The sampling terminal has a second snap-fit ​​structure, the sampling terminal is adapted to be assembled with the insulating support along the thickness direction of the insulating support, and the sampling terminal and the insulating support are detachably connected to the first snap-fit ​​structure through the second snap-fit ​​structure.

2. The sampling component according to claim 1, characterized in that, The first snap-fit ​​structure includes a snap-fit ​​hole, which has an entrance section and a limiting section distributed along the thickness direction of the insulating support. The width d1 of the entrance section is smaller than the width d2 of the limiting section, and the snap-fit ​​hole has a limiting step surface. The second snap-fit ​​structure includes a snap-fit ​​part, which has a spring piece. The spring piece is adapted to undergo elastic deformation when the snap-fit ​​part passes through the entrance section, and is adapted to recover its deformation within the limiting section and snap with the limiting step surface.

3. The sampling component according to claim 2, characterized in that, At least a portion of the snap-fit ​​hole extends through the insulating support along its thickness direction.

4. The sampling component according to claim 2, characterized in that, Along the length of the insulating bracket, the width d1 of the inlet section is smaller than the width d2 of the limiting section; the spring piece is raised along the length of the insulating bracket.

5. The sampling component according to claim 4, characterized in that, The snap-fit ​​portion is provided with a plurality of spring tabs, which are spaced apart along the height direction of the insulating bracket, and adjacent spring tabs are raised in opposite directions along the length direction of the insulating bracket.

6. The sampling component according to claim 5, characterized in that, The limiting section includes a main hole, and a portion of the main hole extends along the length direction of the insulating bracket to form a plurality of limiting grooves spaced apart along the height direction of the insulating bracket. The plurality of limiting grooves correspond to a plurality of spring pieces, and a portion of the wall surface of the limiting groove is formed as the limiting step surface.

7. The sampling component according to claim 2, characterized in that, In the height direction of the insulating bracket, the width d1 of the inlet section is smaller than the width d2 of the limiting section; the spring piece is raised along the height direction of the insulating bracket.

8. The sampling component according to claim 7, characterized in that, The snap-fit ​​hole is provided with a limiting post, which includes a post body and a post cap. The side wall of the post body cooperates with a part of the side wall of the snap-fit ​​hole to define the limiting section. The side wall of the post cap cooperates with another part of the side wall of the snap-fit ​​hole to define the entrance section. A portion of the end face of the post cap connected to the post body is formed as the limiting step surface.

9. The sampling component according to claim 8, characterized in that, The snap-fit ​​hole has two first sidewalls distributed along the height direction of the insulating bracket, the column is located between the two first sidewalls and has two second sidewalls distributed along the height direction of the insulating bracket, the second sidewalls and the first sidewalls opposite to them cooperate to define the limiting segment.

10. The sampling component according to claim 9, characterized in that, The second snap-fit ​​structure includes two snap-fit ​​portions distributed along the height direction of the insulating bracket and arranged opposite to each other. Partial bending of the two snap-fit ​​portions forms spring tabs that are raised along the height direction of the insulating bracket. The two spring tabs of the two snap-fit ​​portions are arranged opposite to each other in a V-shape.

11. The sampling component according to claim 8, characterized in that, The insulating bracket further includes a limiting beam, which is disposed within the snap-fit ​​hole to limit the depth to which the second snap-fit ​​structure extends into the snap-fit ​​hole, and the limiting beam is connected to the limiting post.

12. The sampling component according to claim 1, characterized in that, The sampling terminal has a first end and a second end distributed along the height direction of the insulating bracket. A portion of the first end of the sampling terminal is formed as a tab welding area. The second end of the sampling terminal extends to both ends along the length direction of the insulating bracket to form an assembly area and a wire harness crimping area, respectively. A portion of the assembly area is bent along the thickness direction of the insulating bracket to form the second snap-fit ​​structure.

13. A battery module, characterized in that, Includes the sampling component as described in any one of claims 1 to 12.

14. A battery pack, characterized in that, Includes the battery module as described in claim 13.

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