Acquisition structure and battery assembly

Abstract

The invention discloses an acquisition structure and a battery assembly, the acquisition structure comprises an acquisition part, the acquisition part comprises a main body part and a plurality of first buffer parts, and the main body part is provided with a boundary; the plurality of first buffer parts are connected with the main body part, are respectively positioned on two sides of the boundary line, are at least partially symmetrically arranged about the boundary line, and are used for being connected with a battery. Compared with the prior art, the collection structure provided by the embodiment has the advantages that the boundary is arranged on the main body part, and the first buffer parts are symmetrically arranged on the two sides of the boundary, so that the stress generated by expansion of the battery cell from the middle to the two sides can be effectively buffered in the working process of the battery; the problem that the buffering effect is limited due to the fact that buffering arms are arranged in the same direction in the prior art is solved. The battery assembly adopting the acquisition structure not only improves the stability and safety of data acquisition, but also prolongs the service life of the battery and the acquisition structure.

Description

Technical Field

[0001] This application relates to the field of new energy battery technology, and in particular to a data acquisition structure and battery module. Background Technology

[0002] With the rapid development of the new energy industry, power batteries are widely used in new energy vehicles, energy storage equipment, and other fields. As the core component of a power battery module, the battery cell expands during charging and discharging, especially from the center of the module outwards. To ensure the safety and reliability of the battery, it is usually necessary to collect operating parameters such as voltage and current in real time.

[0003] However, in existing technologies, the buffer arms of the acquisition structure are usually arranged in the same direction. This structural design cannot fully adapt to the expansion characteristics of the battery cell from the middle to both sides when the cell expands, resulting in limited buffering effect and certain safety hazards. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, this application provides a data acquisition structure and battery assembly that can better adapt to cell expansion, effectively buffer deformation, and ensure the stability and reliability of the data acquisition system.

[0005] To achieve the above objectives, this application adopts the following technical solution: A data acquisition structure includes a data acquisition unit, which includes a main body and a plurality of first buffer units. The main body has a dividing line. The plurality of first buffer units are connected to the main body and are located on both sides of the dividing line, and are at least partially symmetrically arranged about the dividing line. The first buffer units are used to connect to a battery.

[0006] In one embodiment, the first buffer portion and the main body portion are at least partially spaced apart.

[0007] In one embodiment, the first buffer portion includes a connecting portion and a deformable portion. The connecting portion is used to connect to the battery. One end of the deformable portion is connected to the connecting portion and forms a material reduction groove. The other end of the deformable portion is connected to the main body portion and is at least partially spaced from the main body portion.

[0008] In one embodiment, the deformable part includes a first part and a second part connected in sequence. The first part is connected to the connecting part, and the second part is connected to the main body. Along the length direction of the main body, the first part extends in a straight line, and the second part extends in a curved direction. The material reduction groove is provided at the connection between the first part and the second part.

[0009] In one embodiment, a gap groove is formed between the main body and the first buffer portion, and the length of the gap groove along the length direction of the main body is not less than the length of the first buffer portion.

[0010] In one embodiment, the spacing groove includes a transverse groove and a vertical groove. The transverse groove is formed between the first buffer portion and the main body portion along the length direction of the main body portion, and the vertical groove is formed between the first buffer portion and the main body portion along the width direction of the main body portion.

[0011] In one embodiment, the first buffer portion includes a first end and a second end along its length direction. The first end of the first buffer portion is used to connect to a battery, and the second end of the first buffer portion is connected to the main body portion. The vertical groove includes a first groove and a second groove, which are respectively connected to opposite ends of the horizontal groove. The first groove is located at the first end of the first buffer portion, and the second groove is located at the second end of the first buffer portion. Along the length direction of the main body portion, the width of the first groove is smaller than the width of the second groove.

[0012] In one embodiment, the acquisition unit includes a second buffer unit, the first buffer unit is connected to the main body except for the end portion, the second buffer unit is connected to one end of the main body, and the length of the second buffer unit is less than the length of the first buffer unit.

[0013] In one embodiment, along the length of the main body, the extension direction of the second buffer portion is opposite to the extension direction of the first buffer portion adjacent to it.

[0014] In one embodiment, a deformation groove is formed between the second buffer portion and the main body portion to separate the second buffer portion and the main body portion. Along the width direction of the main body portion, the deformation groove penetrates the second buffer portion. Along the length direction of the main body portion, the length of the deformation groove exceeds half the length of the second buffer portion.

[0015] In one embodiment, the acquisition structure includes a fixing part, which is connected to the main body and is set at an angle to the main body. The fixing part is used to connect the box or the expansion beam.

[0016] In one embodiment, the acquisition unit includes a third buffer section, which is folded and connected between the fixing section and the main body section to adjust the distance between the fixing section and the main body section.

[0017] In one embodiment, the collecting unit includes a substrate and a protective film, with the protective film attached to the top of the substrate.

[0018] In one embodiment, the thickness of the collecting part is 0.135mm to 0.145mm, and the thickness of the substrate is 0.075mm to 0.085mm.

[0019] This application also employs a technical solution to provide a battery assembly, including the acquisition structure and battery in any of the above embodiments, wherein the acquisition structure and the battery are connected.

[0020] The beneficial effects of this application are as follows: This application provides a data acquisition structure and a battery assembly. The data acquisition structure includes a data acquisition section, which in turn includes a main body and multiple first buffer sections. The main body has a dividing line. The multiple first buffer sections are connected to the main body and are located on both sides of the dividing line, and are at least partially symmetrically arranged about the dividing line. The first buffer sections are used to connect to the battery. Compared with the prior art, the data acquisition structure of this embodiment, by setting a dividing line in the main body and symmetrically arranging multiple first buffer sections on both sides of the dividing line, effectively buffers the stress generated by the expansion of the battery cell from the middle to both sides during battery operation, avoiding the problem of limited buffering effect caused by the unidirectional arrangement of buffer arms in the prior art. The battery assembly using this data acquisition structure not only improves the stability and security of data acquisition, but also extends the service life of the battery and the data acquisition structure. Attached Figure Description

[0021] Figure 1 A schematic diagram of the structure of a battery assembly according to this application is shown; Figure 2 A cross-sectional schematic diagram of a collection unit according to this application is shown; Figure 3 A front view of one acquisition structure of this application is shown; Figure 4 It shows Figure 3 Enlarged view of point A in the image; Figure 5 A side view of one acquisition structure of this application is shown; Figure 6 It shows Figure 5 Enlarged view of point B in the image; Reference numerals: 100, battery; 10, acquisition unit; 20, fixing unit; 30, acquisition plate; 1. Main body; 11. Spacing groove; 111. Horizontal groove; 112. Vertical groove; 1121. First groove; 1122. Second groove; 12. Deformation groove; 121. Third groove; 122. Fourth groove; 2. First buffer section; 21. Connecting section; 22. Deformable section; 23. Material reduction groove; 221. First part; 222. Second part; 3. Second buffer section; 4. Third buffer section. Detailed Implementation

[0022] In this application, the terms "set up," "equipped with," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0023] The terms “center,” “longitudinal,” “lateral,” “length,” “width,” “thickness,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “radial,” and “circumferential” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0024] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0025] See Figure 1 This application provides a battery assembly, including a data acquisition structure and a battery 100. The data acquisition structure is connected to the battery 100. Specifically, the data acquisition structure is connected to an aluminum busbar or a connecting busbar on the battery 100. The data acquisition structure is used to acquire operating parameters such as voltage and current of the battery 100.

[0026] See Figure 2 The acquisition structure includes an acquisition unit 10, which in turn includes a main body 1 and a plurality of first buffer units 2. The main body 1 has a dividing line. The plurality of first buffer units 2 are connected to the main body 1 and are located on both sides of the dividing line, and are at least partially symmetrical about the dividing line. The first buffer units 2 are used to connect to the battery 100.

[0027] To describe clearly, Figure 2 In the middle, the X direction represents the length direction of the main body 1, the Y direction represents the width direction of the main body 1, and Z can represent the dividing line of the main body 1.

[0028] In practical applications, the acquisition structure also includes an acquisition plate 30. The first buffer section 2 is electrically connected to the battery 100 through the acquisition plate 30. The main body 1 can be an elongated structure with a dividing line formed on it. This dividing line can be a center line on the structure of the main body 1, used to divide the main body 1 into two regions. Multiple first buffer sections 2 are respectively connected to the main body 1, and multiple first buffer sections 2 are respectively located on both sides of the dividing line. Specifically, at least some of the first buffer sections 2 are symmetrically arranged about the dividing line, that is, the first buffer sections 2 on both sides of the dividing line are symmetrical in position and structure.

[0029] In this embodiment, the symmetrical arrangement of multiple first buffer sections 2 ensures that when the battery 100 expands, regardless of which side the cell expands from the center of the module, the first buffer sections 2 distributed on both sides of the dividing line can effectively buffer the stress generated by the expansion, avoiding stress concentration in a single direction and improving the adaptability and safety of the data acquisition structure. For example, the first buffer section 2 on the left side bears the force of the battery 100 expanding to the left, and the first buffer section 2 on the right side bears the force of the battery 100 expanding to the right. At the same time, the connection between the first buffer section 2 and the battery 100 ensures the stability of data acquisition and provides buffer space for the expansion of the battery 100.

[0030] Compared to existing technologies, the data acquisition structure in this embodiment, by setting a dividing line in the main body 1 and symmetrically arranging multiple first buffer parts 2 on both sides of the dividing line, effectively buffers the stress generated by the expansion of the battery cell from the middle to both sides during the operation of the battery 100, avoiding the problem of limited buffering effect caused by the buffer arms being arranged in the same direction in existing technologies. This structure not only improves the stability and safety of data acquisition but also extends the service life of the battery 100 and the data acquisition structure.

[0031] It should be noted that the first buffer part 2 can be made of a material suitable for generating deformation, such as plastic material, or the structural stiffness of the first buffer part 2 can be reduced so that the structural stiffness of the first buffer part 2 is less than that of the main body part 1. In this way, when subjected to the expansion force of the battery 100, the first buffer part 2 will preferentially generate deformation or displacement, thereby playing a buffering role.

[0032] See again Figure 2 The first buffer part 2 and the main body part 1 are at least partially spaced apart. The spaced-apart arrangement means that the first buffer part 2 and the main body part 1 are not completely fitted or directly connected, but a certain distance is reserved between them, so that the first buffer part 2 can have a certain space for movement or deformation when subjected to external force (such as the expansion of the battery 100).

[0033] See again Figure 2The first buffer part 2 includes a connecting part 21 and a deformable part 22. The connecting part 21 is used to connect the battery 100. One end of the deformable part 22 is connected to the connecting part 21 and has a material reduction groove 23. The other end of the deformable part 22 is connected to the main body part 1 and is at least partially spaced from the main body part 1.

[0034] In practical applications, the first buffer section 2 mainly consists of a connecting section 21 and a deformable section 22. The connecting section 21 is connected to the aluminum busbar or connecting busbar on the battery 100 and can be fixed by welding, clamping or screwing to ensure the stability of signal acquisition by the battery 100.

[0035] A deformable portion 22 is disposed between the connecting portion 21 and the main body portion 1. One end of the deformable portion 22 is connected to the connecting portion 21, and the other end is connected to the main body portion 1. The deformable portion 22 can be made of an elastic or deformable material, and a material reduction groove 23 is formed on the deformable portion 22. The material reduction groove 23 is usually a slot or hole opened along the length direction of the deformable portion 22. Its function is to weaken the structural rigidity of this part, so that when the deformable portion 22 is subjected to external force (such as the expansion or displacement of the battery 100), it can preferentially generate controllable elastic deformation at the material reduction groove 23, thereby playing a buffering role.

[0036] Meanwhile, when the other end of the deformable part 22 is connected to the main body 1, at least part of it is spaced out, that is, a gap is reserved between the deformable part 22 and the main body 1, either partially or completely, so as to provide space for the deformation of the deformable part 22 and further improve the buffering effect.

[0037] See again Figure 2 The deformable part 22 includes a first part 221 and a second part 222 connected in sequence. The first part 221 is connected to the connecting part 21, and the second part 222 is connected to the main body part 1. Along the length direction of the main body part 1, the first part 221 extends in a straight line, and the second part 222 extends in a curved direction. A material reduction groove 23 is provided at the connection between the first part 221 and the second part 222.

[0038] In practical applications, the deformable portion 22 of the first buffer portion 2 is further subdivided into a first portion 221 and a second portion 222. The first portion 221 is the section of the deformable portion 22 near the connecting portion 21, and is structurally straight, extending linearly along the length of the main body portion 1 and fixedly connected to the connecting portion 21. The second portion 222 is the section of the deformable portion 22 near the main body portion 1, and is structurally curved (such as arc-shaped, zigzag-shaped, etc.) extending and connected to the main body portion 1. Through the cooperation of the straight structure of the first portion 221 and the curved structure of the second portion 222, the deformable portion 22 can provide graded elastic deformation when subjected to external forces (such as the expansion of the battery 100), thereby improving the buffering performance.

[0039] A material reduction groove 23 is provided at the connection between the first part 221 and the second part 222. The material reduction groove 23 can be a V-shaped groove, a U-shaped groove, or other structural weakening area to reduce the stiffness at that point, so that when an external force is applied, the deformable part 22 can bend or deform preferentially at the material reduction groove 23, thereby effectively absorbing and dispersing stress and reducing the impact on the main body 1 and the battery 100.

[0040] See again Figure 2 A gap groove 11 is formed between the main body 1 and the first buffer part 2. The length of the gap groove 11 along the length direction of the main body 1 is not less than the length of the first buffer part 2.

[0041] In practical applications, a spacer groove 11 is provided between the main body 1 and the first buffer part 2. This spacer groove 11 is a groove structure formed along the length of the main body 1, and its length is the same as or longer than the length of the first buffer part 2; that is, the length of the spacer groove 11 is not less than the length of the first buffer part 2. When the deformable part 22 of the first buffer part 2 is connected to the main body 1, it is at least partially suspended or isolated above the spacer groove 11. This allows sufficient space for the deformable part 22 to undergo elastic deformation, preventing interference with the main body 1 and further enhancing the buffering effect.

[0042] The width and depth of the spacer 11 can be designed according to the size of the first buffer part 2 and the structural deformation requirements. The spacer 11 not only reserves space for the elastic deformation of the first buffer part 2, but also prevents stress concentration or structural damage caused by the direct contact between the deformable part 22 and the main body part 1, thereby improving the overall reliability and service life of the acquisition structure.

[0043] See again Figure 2 The spacer 11 includes a transverse groove 111 and a vertical groove 112. A transverse groove 111 is formed between the first buffer part 2 and the main body part 1 along the length direction of the main body part 1, and a vertical groove 112 is formed between the first buffer part 2 and the main body part 1 along the width direction of the main body part 1.

[0044] In practical applications, the spacer slot 11 includes a horizontal slot 111 and a vertical slot 112. The horizontal slot 111 is arranged along the length direction of the main body 1 and is located between the first buffer part 2 and the main body 1, so that the first buffer part 2 is spaced apart from the main body 1 in the length direction. The vertical slot 112 is arranged along the width direction of the main body 1 and is located between the first buffer part 2 and the main body 1, so that the two are also spaced apart in the width direction.

[0045] The length of the transverse groove 111 covers the full length or longer of the first buffer part 2, ensuring that the first buffer part 2 can deform freely in the length direction without being restricted by the main body 1 when it undergoes elastic deformation. The width of the vertical groove 112 covers the full width or wider of the first buffer part 2, ensuring that the first buffer part 2 also has sufficient deformation space in the width direction, avoiding transverse interference with the main body 1.

[0046] In this embodiment, the spacer slot 11 structure is subdivided into a horizontal slot 111 and a vertical slot 112, which are respectively disposed in the length and width directions between the main body 1 and the first buffer part 2, thereby achieving multi-directional isolation and multi-directional buffering of the first buffer part 2. This not only improves the free deformation capability of the first buffer part 2 in the length direction, but also enhances its deformation space in the width direction, effectively preventing structural interference or damage, and greatly improving the buffering performance and reliability of the entire acquisition structure.

[0047] See again Figure 2 The first buffer section 2 includes a first end and a second end along its length direction. The first end of the first buffer section 2 is used to connect the battery 100, and the second end of the first buffer section 2 is connected to the main body section 1. The vertical groove 112 includes a first groove 1121 and a second groove 1122. The first groove 1121 and the second groove 1122 are respectively connected to the opposite ends of the horizontal groove 111. The first groove 1121 is located at the first end of the first buffer section 2, and the second groove 1122 is located at the second end of the first buffer section 2. Along the length direction of the main body section 1, the width of the first groove 1121 is smaller than the width of the second groove 1122.

[0048] In practical applications, the vertical groove 112 is configured as a first groove 1121 and a second groove 1122 at both ends of the first buffer section 2. The first groove 1121 is located between the connecting section 21 and the main body section 1, and is connected to the corresponding end of the horizontal groove 111. The second groove 1122 is located between the buffer section and the main body section 1, and is also connected to the other end of the horizontal groove 111. The width of the first groove 1121 is smaller than the width of the second groove 1122. This configuration provides a smaller gap or interval at the connecting section 21 (i.e., the first end), which can better limit the excessive deformation of the first buffer section 2 near the battery 100, avoid unnecessary displacement or loosening with the battery 100, and improve the stable connection between the acquisition structure and the battery 100; while providing a larger gap or interval at the buffer section (i.e., the second end), the first buffer section 2 can obtain a larger elastic deformation space at this end, thereby enhancing the buffering and energy absorption effect of the overall structure.

[0049] See Figure 3 and Figure 4 The acquisition unit 10 includes a second buffer unit 3. The first buffer unit 2 is connected to the main body 1 except for the end portion. The second buffer unit 3 is connected to one end portion of the main body 1. The length of the second buffer unit 3 is less than the length of the first buffer unit 2.

[0050] In practical applications, the data acquisition unit 10 includes a first buffer unit 2 and a second buffer unit 3 disposed at different locations on the main body 1. The first buffer unit 2 is preferably disposed in the middle section or non-end region of the main body 1, that is, in the part of the main body 1 other than the ends, and its length is relatively long, mainly used to undertake the functions of buffering, supporting the battery 100 and absorbing energy. The second buffer unit 3 is specifically disposed at one end of the opposite ends of the main body 1, and its length is relatively short, mainly used to enhance the buffering performance of the end region and prevent the end from being damaged or deformed due to concentrated force.

[0051] The first buffer section 2 and the main body section 1 can be isolated and buffered by the spacer slots 11 (such as the aforementioned horizontal slot 111 and vertical slot 112). The second buffer section 3 is connected to the end of the main body section 1 and can form a buffer space by means of an independent buffer structure or by cooperating with the end spacer slots 11. Since the length of the second buffer section 3 is less than that of the first buffer section 2, it fits better with the limitations of the end installation space. When the battery assembly is assembled into the box, it saves box space while ensuring that the end area also has a certain buffering capacity, thus improving overall safety.

[0052] See again Figure 4 Along the length of the main body 1, the extension direction of the second buffer part 3 is opposite to that of the extension direction of the adjacent first buffer part 2.

[0053] In practical applications, the main body 1 has left and right sides along its dividing line. If the second buffer 3 is located at the left end of the main body 1, then the second buffer 3 should extend to the right, and the first buffer 2 located on the left side of the main body 1 should extend to the left. With this arrangement, the second buffer 3 shortens the overall length of the acquisition part 10, while ensuring that the end area also has a certain buffering capacity.

[0054] See again Figure 4 A deformation groove 12 is formed between the second buffer part 3 and the main body part 1 to separate the second buffer part 3 and the main body part 1. The deformation groove 12 penetrates the second buffer part 3 along the width direction of the main body part 1, and the length of the deformation groove 12 exceeds half the length of the second buffer part 3 along the length direction of the main body part 1.

[0055] In practical applications, the second buffer portion 3 is disposed at one end of the main body portion 1 and is partially isolated from the main body portion 1 by a deformation groove 12. The deformation groove 12 is preferably an elongated structure, with one end starting from the side of the second buffer portion 3 near the main body portion 1, extending laterally along the width direction of the main body portion 1, and completely penetrating the second buffer portion 3, thus completely separating the second buffer portion 3 from the main body portion 1 in the width direction. When the battery assembly expands, the displacement of its end is relatively large. Therefore, completely separating the second buffer portion 3 from the main body portion 1 in the width direction provides greater elastic deformation space for the second buffer portion 3 under stress or deformation, improving the buffering effect.

[0056] Furthermore, along the length of the main body 1, the length of the deformation groove 12 is greater than half the length of the second buffer part 3. By designing the deformation groove 12 in this way, the main part of the second buffer part 3 is effectively spaced from the main body 1, which can release more elastic deformation when the battery 100 expands, is subjected to assembly stress or external impact, avoid stress concentration caused by rigid connection at the end, and thus improve the buffering energy absorption capacity of the end area.

[0057] Specifically, the deformation groove 12 includes a third groove 121 and a fourth groove 122 that are connected to each other. The third groove 121 extends along the width direction of the main body 1 to the edge of the main body 1 so as to penetrate the main body 1. The fourth groove 122 extends along the length direction of the main body 1, and the extension length exceeds half of the second buffer part 3 so as to increase the spacing area between the second buffer part 3 and the main body 1.

[0058] See Figure 5 The acquisition structure includes a fixing part 20, which is connected to the main body part 1 and is set at an angle to the main body part 1. The fixing part 20 is used to connect the box or the expansion beam.

[0059] In practical applications, after the battery assembly is completed, it needs to be installed in a box or housing. The fixing part 20 can be connected to the box or expansion beam by welding, bolting, riveting, or snap-fitting, thereby achieving reliable fixation between the data acquisition structure and the box. The fixing part 20 is located on the side edge or end of the main body 1. The angled design not only improves the installation flexibility of the structure, but also effectively distributes and transmits the load from the main body 1, enhancing the stability of the overall structure.

[0060] See Figure 6 The acquisition unit 10 includes a third buffer unit 4, which is folded and connected between the fixing unit 20 and the main body 1 to adjust the distance between the fixing unit 20 and the main body 1.

[0061] In practical applications, the third buffer part 4 is disposed between the fixed part 20 and the main body part 1, and is preferably a wave-shaped, bent, Z-shaped, or multi-folded structure. One end of the third buffer part 4 is connected to the main body part 1, and the other end is connected to the fixed part 20. The folded structure allows the third buffer part 4 to elastically expand or buffer deformation along its length when subjected to force or environmental changes (such as temperature changes, structural expansion, etc.), thereby effectively adjusting the spatial distance between the fixed part 20 and the main body part 1.

[0062] Specifically, the folding shape and bending angle of the third buffer section 4 can be designed according to actual installation requirements. This allows for a wide range of distance adjustments and absorbs stress caused by external forces, temperature differences, or structural assembly, preventing breakage or failure due to rigid connections. Simultaneously, the folded third buffer section 4 enhances the overall flexibility and impact resistance of the acquisition structure, adapting to reliability requirements under complex working conditions.

[0063] In terms of overall design, the third buffer section 4 and the second buffer section 3 are respectively located at opposite ends of the main body section 1. On the one hand, they can accommodate the large deformation at both ends of the battery assembly and provide redundant space. On the other hand, they can effectively shorten the overall length of the battery assembly and further optimize the utilization of the housing space.

[0064] In one embodiment, the collecting unit 10 includes a substrate and a protective film, with the protective film affixed to the top of the substrate. Prior art collecting units 10 typically employ a four-layer film structure, generally including a top protective film, a cover film, a polyimide film integrated into the substrate, and a bottom protective film. This laminated design results in low production efficiency and high material costs.

[0065] Based on this, the collection unit 10 of this application adopts only a double-layer membrane structure, namely, a top protective film and a polyimide film on the substrate. By adopting a double-layer structure design of substrate and protective film, the collection unit 10 achieves both lightness and thinness and high strength.

[0066] In one embodiment, the thickness of the collecting part 10 is 0.135mm to 0.145mm, and the thickness of the substrate is 0.075mm to 0.085mm. For example, the thickness of the collecting part 10 can be 0.135mm, 0.136mm, 0.137mm, 0.138mm, 0.139mm, 0.140mm, etc., and the thickness of the substrate can be 0.075mm, 0.076mm, 0.077mm, 0.078mm, 0.079mm, 0.080mm, etc. Thicknesses within this range ensure the overall structure is thin and light, which is beneficial for deformation when the battery 100 expands, and also ensures that the substrate and protective film have excellent mechanical strength and environmental adaptability after lamination. Strictly controlling the thickness of each layer ensures that the collecting part 10 meets mechanical and electrical performance requirements while facilitating lightweight design and integrated installation of the product.

[0067] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0068] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0069] The above description is only a specific embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A data acquisition structure, characterized in that, include: The acquisition unit includes a main body and a plurality of first buffer sections. The main body has a dividing line. The plurality of first buffer sections are connected to the main body and are located on both sides of the dividing line, and are at least partially symmetrical about the dividing line. The first buffer sections are used to connect to a battery.

2. The acquisition structure according to claim 1, characterized in that, The first buffer portion and the main body portion are at least partially spaced apart.

3. The acquisition structure according to claim 2, characterized in that, The first buffer portion includes a connecting portion and a deformable portion. The connecting portion is used to connect to the battery. One end of the deformable portion is connected to the connecting portion and forms a material reduction groove. The other end of the deformable portion is connected to the main body portion and is at least partially spaced from the main body portion.

4. The acquisition structure according to claim 3, characterized in that, The deformable part includes a first part and a second part connected in sequence. The first part is connected to the connecting part, and the second part is connected to the main body. Along the length direction of the main body, the first part extends in a straight line, and the second part extends in a curved direction. The material reduction groove is provided at the connection between the first part and the second part.

5. The acquisition structure according to claim 1, characterized in that, A gap groove is formed between the main body and the first buffer part, and the length of the gap groove along the length direction of the main body is not less than the length of the first buffer part.

6. The acquisition structure according to claim 5, characterized in that, The spacing groove includes a horizontal groove and a vertical groove. The horizontal groove is formed between the first buffer part and the main body part along the length direction of the main body part, and the vertical groove is formed between the first buffer part and the main body part along the width direction of the main body part.

7. The acquisition structure according to claim 6, characterized in that, The first buffer portion includes a first end and a second end along its length direction. The first end of the first buffer portion is used to connect to the battery, and the second end of the first buffer portion is connected to the main body portion. The vertical groove includes a first groove and a second groove, which are respectively connected to the opposite ends of the horizontal groove. The first groove is located at the first end of the first buffer part, and the second groove is located at the second end of the first buffer part. Along the length direction of the main body, the width of the first groove is smaller than the width of the second groove.

8. The acquisition structure according to any one of claims 1 to 7, characterized in that, The acquisition unit includes a second buffer unit. The first buffer unit is connected to the main body except for the end portion. The second buffer unit is connected to one end of the main body. The length of the second buffer unit is less than the length of the first buffer unit.

9. The acquisition structure according to claim 8, characterized in that, Along the length of the main body, the extension direction of the second buffer portion is opposite to that of the extension direction of the first buffer portion adjacent to it.

10. The acquisition structure according to claim 8, characterized in that, A deformation groove is formed between the second buffer portion and the main body portion to separate the second buffer portion and the main body portion. Along the width direction of the main body portion, the deformation groove penetrates the second buffer portion. Along the length direction of the main body portion, the length of the deformation groove exceeds half the length of the second buffer portion.

11. The acquisition structure according to any one of claims 1 to 7, characterized in that, The acquisition structure includes a fixing part, which is connected to the main body and is set at an angle to the main body. The fixing part is used to connect the box or the expansion beam.

12. The acquisition structure according to claim 11, characterized in that, The acquisition unit includes a third buffer unit, which is folded and connected between the fixing unit and the main body to adjust the distance between the fixing unit and the main body.

13. The acquisition structure according to any one of claims 1 to 7, characterized in that, The collection unit includes a substrate and a protective film, with the protective film attached to the top of the substrate.

14. The acquisition structure according to claim 13, characterized in that, The thickness of the collecting part is 0.135mm~0.145mm, and the thickness of the substrate is 0.075mm~0.085mm.

15. A battery assembly, characterized in that, It includes the acquisition structure and battery as described in any one of claims 1 to 14, wherein the acquisition structure and the battery are connected.

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