Collection sheet for integrated busbar collection assembly and integrated busbar collection assembly

Abstract

A collection piece for an integrated busbar collection assembly comprises a collection piece body, and the collection piece body comprises a first connecting part, a buffer stretching part and a second connecting part which are sequentially connected in the length direction of the collection piece body; the buffer stretching part comprises a first transverse section, an inclined section and a second transverse section which are connected in sequence; the end part, far away from the inclined section, of the first transverse section is connected with the first connecting part; the first transverse section and the second transverse section extend along the length direction and are respectively arranged on two long sides of the acquisition sheet main body; the position, connected with the first transverse section, of the inclined section is inclined towards one side of the first connecting part; the inner sides of the connecting positions of the inclined section and the first transverse section and the second transverse section are sunken to form arc-shaped grooves. The utility model also provides an integrated busbar acquisition assembly using the acquisition sheet. Compared with the prior art, the length of the collecting piece is effectively increased, the buffering effect is improved, and meanwhile the cracking problem of the two adjacent sections can be remarkably reduced through the arc-shaped grooves.

Description

Technical Field

[0001] This utility model belongs to the field of data acquisition technology, specifically relating to a data acquisition chip for integrating busbar data acquisition components and an integrated busbar data acquisition component using the data acquisition chip. Background Technology

[0002] To ensure the safe use of power batteries and energy storage batteries, integrated busbars are installed. Expansion of the battery cells can easily lead to tearing of solder joints and the main body, such as tearing between the busbar's current collector and the data acquisition unit's data acquisition chip, reducing the reliability of the connection at the solder joints.

[0003] To mitigate the impact of cell expansion, existing technologies incorporate buffer structures on the data acquisition chip. For example, the flexible circuit board assembly for battery module voltage acquisition disclosed in patent application CN220569918U features a serpentine connecting strip on the voltage acquisition terminals. When the cell expands, the serpentine connecting strip is straightened, thus reducing the impact of cell expansion. However, the aforementioned buffer structure has a short effective elongation length, resulting in limited buffering effectiveness. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a data acquisition chip for integrating busbar data acquisition components.

[0005] To achieve the above objectives, this utility model discloses a data acquisition chip for integrating a busbar data acquisition component, comprising a data acquisition chip body. The data acquisition chip body includes a first connecting part, a buffer stretching part, and a second connecting part connected sequentially along its length direction. The first connecting part is used to connect with the flexible circuit of the data acquisition component, and the second connecting part is used to connect with the busbar component.

[0006] The buffer stretching section includes a first horizontal segment, an inclined segment, and a second horizontal segment connected in sequence; the end of the first horizontal segment away from the inclined segment is connected to the first connecting section; both the first horizontal segment and the second horizontal segment extend along the length direction and are respectively located on the two long sides of the main body of the acquisition piece; the inclined segment is inclined towards the first connecting section at the position where it connects with the first horizontal segment.

[0007] The inner side of the junction between the inclined segment and the first and second transverse segments is recessed to form an arc-shaped groove.

[0008] In one embodiment, a connecting strip is further included, one end of which is connected to the end of the second transverse segment away from the inclined segment, and the other end of which extends along the width direction of the acquisition plate body, and the second connecting portion is connected to the connecting strip.

[0009] In another embodiment, a connecting bridge is provided between the first transverse segment and the connecting strip, and between the second transverse segment and the first connecting part. The width of the connecting bridge is configured such that the buffer tension part breaks when it is subjected to buffering tension.

[0010] In another embodiment, the width of the connecting bridge gradually decreases from its two ends to its middle position.

[0011] In another embodiment, the first connecting part, the buffer stretching part, the connecting strip, and the second connecting part are integrally formed.

[0012] In another embodiment, the first connecting portion, the buffer tension portion, and the connecting strip are covered with an insulating layer, while the second connecting portion is exposed.

[0013] In another embodiment, the first connecting portion is provided with a plurality of positioning holes.

[0014] In another embodiment, at least two of the positioning holes are located on the long side of the first connecting portion and are close to the buffer stretch portion.

[0015] In another embodiment, the first connecting portion is provided with a plurality of through-holes.

[0016] This invention also provides an integrated busbar acquisition component using the aforementioned acquisition chip.

[0017] An integrated busbar acquisition component includes an acquisition element and multiple acquisition chips. The acquisition element is provided with multiple flexible circuits, and each acquisition chip is connected to one of the flexible circuits. The acquisition chip is any of the acquisition chips described above for the integrated busbar acquisition component.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] The inclined segment is inclined towards the first connecting part at the position where it connects with the first horizontal segment, so that it forms a continuous bending shape between the first horizontal segment and the second horizontal segment. This increases the overall length and effective elongation length of the buffer stretching part, and improves the buffering effect.

[0020] The inclined segment is inclined, and the angle between it and the first and second horizontal segments is small. When the buffer tension part is stretched, the inner side of the inclined segment at the junction with the first and second horizontal segments is easily pulled and cracked. In this application, an arc-shaped groove is formed on the inner side of the junction. In this way, when the buffer tension part is stretched, the two adjacent segments can be effectively buffered and transitioned, which significantly reduces the problem of cracking, improves the reliability of use, and also increases the maximum force that the buffer tension part can withstand.

[0021] The first connecting part, the buffer stretching part, and the second connecting part are continuously bent, which allows the buffer stretching part to be stretched in any direction, fully absorbing the displacement in any direction due to the expansion of the battery cell. At the same time, it supports the overall structural design of the CCS assembly product without having to consider the direction of battery cell expansion, reducing the design difficulty. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the acquisition chip used in the integrated busbar acquisition component of Example 1;

[0023] The main body of the captured image is 100;

[0024] First connecting part 110; through-hole 111; positioning hole 112;

[0025] Buffer stretching section 120; first transverse segment 121; inclined segment 122; second transverse segment 123;

[0026] Second connecting part 130;

[0027] Connecting bar 140;

[0028] 150 arc-shaped groove;

[0029] Connecting bridge 160. Detailed Implementation

[0030] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Example 1

[0032] A data acquisition chip for integrating busbar data acquisition components, see [link / reference]. Figure 1 The system includes a data acquisition body 100. For ease of explanation, the length and width directions mentioned below refer to the length and width directions of the data acquisition body 100. The data acquisition body 100 includes a first connecting portion 110, a buffer stretching portion 120, and a second connecting portion 130 connected sequentially along its length. The first connecting portion 110 is used to connect to the flexible circuit of the data acquisition component, and the second connecting portion 130 is used to connect to the busbar. Specifically, in this embodiment, the first connecting portion 110 is provided with multiple through-holes 111. The through-holes 111 are oblong, allowing solder paste from the lower surface to overflow to the upper surface during laser soldering, improving solder penetration and soldering quality. Furthermore, the through-holes 111 also improve the accuracy of solder joint inspection (3D X-ray solder joint inspection). The second connecting portion 130 is an ultrasonic soldering pad.

[0033] The buffer stretching section 120 includes a first horizontal segment 121, an inclined segment 122, and a second horizontal segment 123 connected in sequence. The end of the first horizontal segment 121 away from the inclined segment 122 is connected to the first connecting section 110. Both the first horizontal segment 121 and the second horizontal segment 123 extend along the length direction and are respectively located on the two long sides of the collection plate body 100. The inclined segment 122 is inclined towards the first connecting section 110 at the position where it connects with the first horizontal segment 121. In the buffer stretching section 120, the first horizontal segment 121 and the second horizontal segment 123 are respectively located on the two long sides of the collection plate body 100 along the length direction, and the inclined segment 122 is inclined, so that the buffer stretching section 120 forms a continuous shape, which increases the overall length and effective stretching length of the buffer stretching section 120 and improves the buffering effect. The first connecting part 110, the buffer stretching part 120, and the second connecting part 130 are in a continuous bending shape, which allows the buffer stretching part 120 to be stretched in any direction, fully absorbing the displacement in any direction due to the expansion of the battery cell. At the same time, it supports the overall structural design of the CCS assembly product without having to consider the direction of battery cell expansion, thus reducing the design difficulty.

[0034] The inclined segment 122 is inclined, and the angle between it and the first horizontal segment 121 and the second horizontal segment 123 is small. When the buffer tensioning part 120 is stretched, the inner side of the inclined segment 122 at the junction with the first horizontal segment 121 and the second horizontal segment 123 is easily pulled and cracked. In this embodiment, the inner side of the junction of the inclined segment 122 with the first horizontal segment 121 and the second horizontal segment 123 is recessed to form an arc-shaped groove 150. In this way, when the buffer tensioning part 120 is stretched, the two adjacent segments can be effectively buffered and transitioned through the arc-shaped groove 150, which significantly reduces the problem of cracking, improves the reliability of use, and also improves the smoothness of the two adjacent segments during the stretching process.

[0035] See Figure 1 The main body 100 of the acquisition plate also includes a connecting strip 140. One end of the connecting strip 140 is connected to the end of the second transverse segment 123 away from the inclined segment 122. The other end of the connecting strip 140 extends along the width direction of the main body 100 of the acquisition plate. The second connecting part 130 is connected to the connecting strip 140.

[0036] Connecting bridges 160 are provided between the first horizontal segment 121 and the connecting strip 140, and between the second horizontal segment 123 and the first connecting part 110. The width of the connecting bridges 160 is configured such that the buffer tension part 120 breaks during buffering and stretching. By setting the connecting bridges 160, the structure of the buffer tension part 120 is made flat, improving its structural stability and preventing the acquisition piece from shifting during subsequent processing, which could affect processing accuracy and improve processing quality.

[0037] Preferably, the width of the connecting bridge 160 gradually decreases from both ends to the middle position, that is, the width of the connecting bridge 160 is the smallest at the middle position. When the buffer tension part 120 is under tension, the connecting bridge 160 is easy to break, thus ensuring the buffering effect.

[0038] In this embodiment, the first connecting part 110, the buffer tensioning part 120, the connecting strip 140, and the second connecting part 130 are integrally formed structures, for example, formed by a stamping process. The integrally formed structure has high structural strength and can avoid problems such as unreliable connections or even connection failures caused by connection points.

[0039] In this embodiment, the first connecting portion 110, the buffer tension portion 120, and the connecting strip 140 are covered with an insulating layer, which protects the non-connected areas of the data acquisition chip body 100 and the circuit. The second connecting portion 130 is exposed to facilitate soldering to the busbar.

[0040] See Figure 1 The first connecting part 110 is provided with a plurality of positioning holes 112, specifically three positioning holes 112. The positioning holes 112 can cooperate with the positioning pins of the automated equipment to ensure the positional accuracy of the acquisition chip body 100 during the processing and improve the processing quality.

[0041] The two positioning holes 112 are located on the long side of the first connecting part 110 and close to the buffer tension part 120. This can disperse the stress at the end of the first connecting part 110 close to the buffer tension part 120 and reduce the influence of the buffer tension part 120 on the first connecting part 110.

[0042] Example 2

[0043] An integrated busbar data acquisition component includes a data acquisition element and multiple data acquisition chips. The data acquisition element has multiple flexible circuits, and each data acquisition chip is connected to one flexible circuit. The data acquisition element acquires data such as cell current and voltage through the corresponding data acquisition chips.

[0044] The acquisition chip used is the acquisition chip for integrating busbar acquisition components as described in Example 1.

[0045] The preferred acquisition component is an FPC.

[0046] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A data acquisition chip for integrating a busbar data acquisition assembly, comprising a data acquisition chip body, the data acquisition chip body including a first connecting portion, a buffer stretching portion, and a second connecting portion sequentially connected along its length direction, the first connecting portion being used for connection to the flexible circuit of the data acquisition assembly, and the second connecting portion being used for connection to a busbar connector, characterized in that: The buffer stretching section includes a first horizontal segment, an inclined segment, and a second horizontal segment connected in sequence; the end of the first horizontal segment away from the inclined segment is connected to the first connecting section; both the first horizontal segment and the second horizontal segment extend along the length direction and are respectively located on the two long sides of the main body of the acquisition piece; the inclined segment is inclined towards the first connecting section at the position where it connects with the first horizontal segment. The inner side of the junction between the inclined segment and the first and second transverse segments is recessed to form an arc-shaped groove.

2. The acquisition chip for integrating busbar acquisition components according to claim 1, characterized in that: It also includes a connecting strip, one end of which is connected to the end of the second transverse segment away from the inclined segment, and the other end of which extends along the width direction of the main body of the acquisition piece, and the second connecting part is connected to the connecting strip.

3. The acquisition chip for integrating busbar acquisition components according to claim 2, characterized in that: A connecting bridge is provided between the first horizontal segment and the connecting strip, and between the second horizontal segment and the first connecting part. The width of the connecting bridge is configured such that the buffer tension part breaks when it is subjected to buffering tension.

4. The acquisition chip for integrating busbar acquisition components according to claim 3, characterized in that: The width of the connecting bridge gradually decreases from its two ends to its middle position.

5. The acquisition chip for integrating busbar acquisition components according to claim 2, characterized in that: The first connecting part, the buffer stretching part, the connecting strip, and the second connecting part are integrally formed structures.

6. The acquisition chip for integrating busbar acquisition components according to claim 2, characterized in that: The first connecting part, the buffer tensioning part, and the connecting strip are covered with an insulating layer, while the second connecting part is exposed.

7. The acquisition chip for integrating busbar acquisition components according to claim 1, characterized in that: The first connecting part is provided with multiple positioning holes.

8. The acquisition chip for integrating a busbar acquisition assembly according to claim 7, characterized in that: At least two of the positioning holes are located on the long side of the first connecting portion and are close to the buffer stretch portion.

9. The acquisition chip for integrating a busbar acquisition assembly according to claim 1, characterized in that: The first connecting part is provided with multiple through-holes.

10. An integrated busbar data acquisition assembly, comprising a data acquisition component and multiple data acquisition chips, wherein the data acquisition component is provided with multiple flexible circuits, and each data acquisition chip is connected to one of the flexible circuits, characterized in that: The acquisition chip is the acquisition chip for integrating busbar acquisition components as described in any one of claims 1-9.

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