Support and battery pack

Abstract

The support comprises a base body, a limiting part and a plurality of hot riveting columns, two first channels arranged at intervals and two first openings are formed, the first openings penetrate through one side of the base body in the thickness direction of the base body, the first channels are communicated with the first openings in a one-to-one correspondence mode, the limiting part is arranged on the base body, and the hot riveting columns are arranged on the limiting part. A second channel and two second openings are formed in the limiting part, the second channel is located between the two first channels and communicates with the first channels through the second openings, the multiple hot riveting columns are arranged in the two first channels correspondingly, and the second openings face the hot riveting columns. The utility model discloses a bracket and a battery pack, and aims to solve the technical problem that a circuit board is easy to shift in assembly and hot riveting processes.

Description

Technical Field

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

[0002] In modern electronic devices, the battery pack is a core component responsible for providing a stable power source. A battery pack typically consists of an injection-molded support frame, a flexible printed circuit board (FPC), and battery cells. In current prismatic power battery designs, the injection-molded support frame and the FPC are generally fixed using a hot-riveting process. This process involves setting multiple hot-riveting posts on the support frame and pre-drilling corresponding holes in the FPC. By passing the hot-riveting posts through the holes in the FPC and then performing the hot-riveting process, the circuit board is finally fixed. However, a key technical problem exists in this process: the FPC is prone to displacement during assembly and hot-riveting. This displacement can not only lead to unreliable connections between the FPC and the battery cells' terminals but also affect the overall structural stability and normal functioning. Therefore, how to improve the fixing process to ensure the FPC remains stable during assembly is a problem that urgently needs to be solved in the current technological field. Utility Model Content

[0003] One objective of this invention is to provide a bracket and battery pack that address the technical problem of circuit board displacement during assembly and hot riveting.

[0004] To achieve the above objectives, the present invention provides a solution as follows: a bracket, comprising: a base, a limiting part, and a plurality of hot riveting posts, forming two spaced-apart first channels and two first openings. The first openings penetrate one side of the base along the thickness direction of the base, and the first channels and first openings are connected in a one-to-one correspondence. The limiting part is disposed on the base, and the limiting part forms a second channel and two second openings. The second channel is located between the two first channels and is connected to the first channels through the second openings. The plurality of hot riveting posts are respectively disposed in the two first channels, and the second openings are oriented towards the hot riveting posts.

[0005] Optionally, the bracket includes a connecting part disposed in the second channel to separate the second channel into a first sub-channel and a second sub-channel. One end of the connecting part is connected to the base and the other end is connected to the limiting part. The first sub-channel is connected to the adjacent first channel through a second opening, and the second sub-channel is connected to the adjacent first channel through another second opening.

[0006] Optionally, the limiting part has a third opening, the orientation of which is opposite to that of the first opening, and both the first sub-channel and the second sub-channel are connected to the third opening.

[0007] Optionally, the edge of the limiting portion used to form the second opening is chamfered.

[0008] Optionally, there are two hot riveting posts, each located at the middle of the first channel along its length.

[0009] Optionally, the hot riveting post protrudes from the first channel through the first opening along its height direction.

[0010] Optionally, along the height direction of the hot riveting post, the height of the hot riveting post is H1, and the height of the second opening is H2, where 2.1≤H1 / H2≤8.3.

[0011] Optionally, 1.5 (mm) ≤ H1 ≤ 6.7 (mm), 0.3 (mm) ≤ H2 ≤ 0.8 (mm).

[0012] Secondly, one solution provided by this utility model is: a battery pack, comprising: a circuit board and a bracket, wherein the circuit board is placed in a first channel and partially inserted into a second channel.

[0013] Optionally, the circuit board has a limiting hole along its length, and the hot riveting post is inserted into the limiting hole.

[0014] Optionally, at least one end of the limiting portion along its length direction is formed with a notch for exposing the circuit board.

[0015] The beneficial effects of this utility model are as follows:

[0016] The bracket includes a base, a limiting part, and multiple hot-riveting posts, forming two spaced-apart first channels and two first openings. The first openings penetrate one side of the base along its thickness direction, and the first channels and first openings are connected one-to-one. The limiting part is disposed on the base and forms a second channel and two second openings. The second channel is located between the two first channels and communicates with the first channels through the second openings. Multiple hot-riveting posts are respectively disposed in the two first channels, with the second openings facing the hot-riveting posts. A circuit board is placed in the first channel and partially inserted into the second channel, with the hot-riveting posts passing through the circuit board.

[0017] In practical applications, circuit boards are prone to displacement during assembly and hot riveting, which can lead to decreased assembly accuracy and poor equipment performance. During assembly, the circuit board is placed in the first channel through the first opening, then a portion of the circuit board is inserted into the second channel through the second opening. Finally, hot riveting posts are inserted through the circuit board. At this point, the limiting part effectively restricts the movement and rotation of the circuit board in the thickness direction of the first channel, and the hot riveting posts further restrict the movement and rotation of the circuit board in the direction perpendicular to the thickness direction of the first channel. This improves assembly accuracy and efficiency, reduces the risk of displacement caused by hot riveting operations, and thus enhances the overall reliability and performance of the equipment. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the display stand provided in an embodiment of the present invention;

[0020] Figure 2 This is provided by the embodiment of the present utility model. Figure 1 Schematic diagram of the cross-sectional structure at point AA;

[0021] Figure 3 This is provided by the embodiment of the present utility model. Figure 2 A magnified view of a portion of region B in the middle;

[0022] Figure 4 This is provided by the embodiment of the present utility model. Figure 1 A magnified view of a portion of region C in the middle;

[0023] Figure 5 This is a schematic diagram of the overall structure of the bottom of the display bracket provided in an embodiment of the present invention;

[0024] Figure 6 This is provided by the embodiment of the present utility model. Figure 5 A magnified view of a portion of region D.

[0025] Explanation of icon numbers:

[0026] 20. Substrate; 21. First channel; 22. First opening; 30. Limiting part; 31. Second channel; 311. First sub-channel; 312. Second sub-channel; 32. Second opening; 33. Notch; 34. Third opening; 35. Chamfer; 40. Hot riveting post; 50. Connecting part; 60. Circuit board; 61. Limiting hole; 70. Thickness direction of the first channel; 80. Length direction of the first channel. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1 to 4 As shown, Figure 1 This is a schematic diagram of the overall structure of the display stand provided in an embodiment of the present invention. Figure 2 This is provided by the embodiment of the present utility model. Figure 1 Schematic diagram of the cross-sectional structure at point AA. Figure 3 This is provided by the embodiment of the present utility model. Figure 2 A magnified view of a portion of region B. Figure 4 This is provided by the embodiment of the present utility model. Figure 1 A magnified view of a portion of region C.

[0029] This utility model provides a battery pack, including a circuit board 60 and a bracket.

[0030] Specifically, the bracket includes a base 20, a limiting part 30, and multiple hot-riveting posts 40, forming two spaced-apart first channels 21 and two first openings 22. The first openings 22 penetrate one side of the base 20 along its thickness direction, and the first channels 21 and first openings 22 are connected one-to-one. The limiting part 30 is disposed on the base 20 and forms a second channel 31 and two second openings 32. The second channel 31 is located between the two first channels 21 and is connected to the first channels 21 through the second openings 32. The multiple hot-riveting posts 40 are respectively disposed in the two first channels 21, with the second openings 32 facing the hot-riveting posts 40. The circuit board 60 is placed in the first channel 21 and partially inserted into the second channel 31, with the hot-riveting posts 40 passing through the circuit board 60.

[0031] In practical applications, circuit board 60 is prone to displacement during assembly and hot riveting, which may lead to decreased assembly accuracy and poor equipment performance. During assembly, circuit board 60 is placed in first channel 21 through first opening 22, and then a portion of circuit board 60 is inserted into second channel 31 through second opening 32. Finally, hot riveting post 40 is inserted through circuit board 60. At this time, limiting part 30 can effectively restrict the movement and rotation of circuit board 60 in the thickness direction 70 of first channel, and hot riveting post 40 further restricts the movement and rotation of circuit board 60 from the thickness direction 70 perpendicular to first channel, improving assembly accuracy and efficiency, reducing the risk of displacement caused by hot riveting operation, thereby improving the overall reliability and performance of equipment.

[0032] In this embodiment, the limiting part 30 is a continuous structure extending along the length direction 80 of the first channel. Each first channel 21 is provided with three hot-riveting posts 40, which are respectively located at both ends and the middle of the first channel 21 along the length direction 80. The circuit board 60 is a flexible circuit board 60, and there are two circuit boards 60. The two circuit boards 60 are respectively placed in the two first channels 21, and a portion of the circuit board 60 is inserted into the second channel 31 through the second opening 32. In other embodiments, the limiting part 30 can be a spaced-apart structure, with multiple limiting parts 30 spaced apart along the length direction 80 of the first channel. Alternatively, there can be only one circuit board 60, with a portion of the circuit board 60 placed in one first channel 21 and another portion of the circuit board 60 passing through the second channel 31 and placed in another second channel 31, and then multiple hot-riveting posts 40 are inserted into the circuit board 60.

[0033] In one embodiment, see Figure 4 , Figure 5 and Figure 6 The bracket includes a connecting part 50, which is disposed in the second channel 31 to separate the second channel 31 into a first sub-channel 311 and a second sub-channel 312. One end of the connecting part 50 is connected to the base 20, and the other end is connected to the limiting part 30. The first sub-channel 311 is connected to the adjacent first channel 21 through a second opening 32, and the second sub-channel 312 is connected to the adjacent first channel 21 through another second opening 32.

[0034] In practical applications, there are two circuit boards 60, corresponding to the positive and negative terminals of the battery cell, respectively. The two circuit boards 60 are placed on either side of the connecting portion 50. One circuit board 60 is placed near the first sub-channel 311 in the first channel 21 and partially inserted into it, while the other circuit board 60 is placed near the second sub-channel 312 in the first channel 21 and partially inserted into it. The connecting portion 50 not only connects the base 20 and the limiting portion 30, thereby improving the overall strength of the support structure, but also has a separating function, dividing the second channel 31 into the first sub-channel 311 and the second sub-channel 312 to separate the two circuit boards 60. The technical advantage of this design is that when two circuit boards 60 need to be installed, they can be inserted into the first sub-channel 311 and the second sub-channel 312 respectively. The connecting portion 50 effectively separates the two circuit boards 60, reducing potential interference between them. This design not only increases the number of connection points between the base 20 and the limiting part 30, thereby improving the overall strength of the bracket, but also reduces interference between adjacent circuit boards 60 by separating them, thereby reducing the risk of signal crosstalk and improving electrical performance.

[0035] Further, see Figure 3 and Figure 6 The limiting part 30 has a third opening 34, the orientation of which is opposite to that of the first opening 22. The first sub-channel 311 and the second sub-channel 312 are both connected to the third opening 34.

[0036] In practical applications, the third opening 34 simplifies mold design and material usage during the bracket forming process, thereby reducing production costs and improving production efficiency. The bracket is positioned above the battery cell, with the third opening 34 facing the cell. When the battery cell heats up, it transfers heat to the surrounding gas. The heated gas rises and enters the first sub-channel 311 and the second sub-channel 312 through the third opening 34, then enters the first channel 21 through the second opening 32, and finally exits from the first channel 21 through the first opening 22. This provides an additional ventilation path for the circuit board 60, improving heat dissipation and helping to extend the battery cell's lifespan. Furthermore, the third opening 34 facilitates the assembly personnel's observation of the positional relationship between the circuit board 60 and the connecting part 50, thereby reducing the possibility of interference between the circuit board 60 and the connecting part 50 during assembly, which could damage the connecting part 50.

[0037] In this embodiment, the third opening 34 is provided on both sides of the connecting part 50, one of the third openings 34 is connected to the first sub-channel 311, and the other third opening 34 is connected to the second sub-channel 312.

[0038] In one embodiment, see Figure 3 The limiting part 30 is provided with a chamfer 35 on the edge that forms the second opening 32.

[0039] In practical applications, the limiting part 30 has a chamfered edge 35 along its edge forming the second opening 32. This design addresses potential safety hazards and operational inconveniences during bracket installation and use. By adding a chamfer 35, the presence of sharp edges is reduced, thereby lowering the risk of scratching or cutting installers during the insertion of the circuit board 60 through the second opening 32 into the second channel 31, thus improving bracket safety. Furthermore, the chamfered edge 35 helps guide the circuit board 60 or other components to be inserted or passed through the second opening 32 more smoothly, simplifying the installation process and improving operational efficiency. Simultaneously, the chamfered edge 35 effectively disperses stress concentration, enhances the structural integrity of the bracket, and reduces the risk of material fatigue or damage.

[0040] In one embodiment, see Figure 1 There are two hot riveting posts 40, each of which is located at the middle of the first channel 21 in its length direction.

[0041] The placement of the hot-riveting post 40 in the middle of the first channel 21 along its length solves the problem of inaccurate positioning at the connection between the circuit board 60 and the electrode post. In practical applications, multiple cells are stacked along the length 80 of the first channel, resulting in multiple connections between the electrode post and the circuit board 60 being spaced apart along the length 80 of the first channel. To ensure accurate positioning of these connections, measurements are typically taken with the hot-riveting post 40 as a reference. If the hot-riveting post 40 is placed at the end of the channel, the distance between the electrode post and the hot-riveting post 40 is large, and the error of the measuring tool will accumulate, leading to inaccurate positioning of the connection. However, by placing the hot-riveting post 40 in the middle of the channel, the distance between the electrode post and the hot-riveting post 40 is effectively shortened, thereby reducing the accumulation of error of the measuring tool and improving the positioning accuracy.

[0042] In one embodiment, reference is made to Figure 3 The hot riveting post 40 protrudes from the first channel 21 through the first opening 22 along its height direction, and the height direction of the hot riveting post 40 is the thickness direction 70 of the first channel.

[0043] In practical applications, the circuit board 60 passes through the hot-riveting post 40. By appropriately protruding the hot-riveting post 40 in the height direction, the fixing effect on the circuit board 60 is enhanced. Specifically, the more protruding the post, the more firmly the circuit board 60 is fixed, thereby reducing the risk of the circuit board 60 detaching from the hot-riveting post 40 under external force or vibration. This design not only improves the installation stability of the circuit board 60 but also enhances the reliability of the overall structure, ensuring the safety and durability of the equipment during use.

[0044] Furthermore, referring to Figure 3 Along the height direction of the hot riveting post 40, the height of the hot riveting post 40 is H1, and the height of the second opening 32 is H2, 2.1≤H1 / H2≤8.3.

[0045] In practical applications, the installation process of circuit board 60 is as follows: Circuit board 60 is first placed in the first channel 21 and then inserted through the second opening 32 into the second channel 31 before the hot-riveting post 40 is inserted. In this bracket design, the height (H1) of the hot-riveting post 40 has a significant impact on the installation process of circuit board 60. Specifically, a larger hot-riveting post 40 height means that the hot-riveting post 40 will protrude more deeply from the first channel 21. This design requires the circuit board 60 to undergo a larger bending angle during installation to allow the hot-riveting post 40 to be smoothly inserted into the circuit board 60, thus ensuring the stable installation of circuit board 60. However, if the height of the hot-riveting post 40 is too small, although the circuit board 60 does not need to be bent at such a large angle during installation, it also increases the risk of the circuit board 60 detaching from the bracket when subjected to external forces or vibrations. Therefore, reasonably controlling the height of the hot-riveting post 40, so that it provides sufficient fixing strength without excessively increasing the installation difficulty, is the key to achieving a balance between the stability and ease of installation of circuit board 60. By controlling the ratio of the height of the hot riveting post 40 to the height of the second opening 32 between 2.1 and 8.3, the fixing effect of the circuit board 60 can be effectively improved, the installation experience can be optimized, and the reliability and safety of the product can be ensured.

[0046] Furthermore, 1.5 (mm) ≤ H1 ≤ 6.7 (mm), 0.3 (mm) ≤ H2 ≤ 0.8 (mm). In the embodiments of this application, H1 = 3 (mm), H2 = 0.5 (mm).

[0047] In one embodiment, reference is made to Figure 4 The circuit board 60 has a limiting hole 61 along its own length direction, and the hot riveting post 40 is inserted into the limiting hole 61. When the circuit board 60 is placed in the first channel 21, the length direction of the circuit board 60 is parallel to the length direction 80 of the first channel.

[0048] In practical applications, by providing limiting holes 61 on the circuit board 60, the hot riveting post 40, after passing through the circuit board 60, can effectively limit the large-scale movement of the circuit board 60 in the length direction, while allowing for fine-tuning. This design ensures the stability of the circuit board 60 after installation and prevents it from shifting position when subjected to external vibrations or impacts.

[0049] Furthermore, the locating hole 61, located along the length of the circuit board 60, reduces the requirements for machining accuracy while ensuring the stability of the circuit board 60 during installation. Since the design of the locating hole 61 allows for fine-tuning of the circuit board 60 along its length, extremely high machining accuracy is not required for the fit between the hot riveting post 40 and the locating hole 61. This design alleviates the need for precision machining, thereby reducing production costs. In addition, lower machining accuracy also means increased production efficiency and reduced production time. This method not only achieves stable installation of the circuit board 60 but also optimizes the manufacturing process, bringing economic benefits to large-scale production.

[0050] Furthermore, referring to Figure 4 The limiting part 30 has a notch 33 formed at at least one end along its own length direction. The notch 33 is used to expose the circuit board 60. The length direction of the limiting part is parallel to the length direction 80 of the first channel.

[0051] In practical applications, in traditional battery pack designs, the circuit board 60 is often surrounded by multiple fixed components, making it difficult for assembly personnel to directly access the circuit board 60 during assembly and adjustment. The notch 33 of this application effectively solves this problem. Assembly personnel can easily clamp the circuit board 60 through the notch 33, greatly improving operational convenience. At the same time, the notch 33 design reduces the risk of damage to the circuit board 60. Without a dedicated clamping area, assembly personnel may need to access sensitive areas of the circuit board 60, increasing the possibility of damage. The presence of the notch 33 provides a safe contact point for operation, reducing the risk of damage to the circuit board 60 due to misoperation during assembly. This not only extends the service life of the circuit board 60 but also reduces rework and scrap rates, saving costs for the company.

[0052] In this embodiment, the notch 33 is connected to the first channel 21 and the second channel 31, respectively.

[0053] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture. If the specific posture changes, the directional indicator will also change accordingly.

[0054] It should also be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or may be connected to an intermediary component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component through an intermediary component.

[0055] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0056] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A support, characterized in that, include: The substrate has two spaced-apart first channels and two first openings. The first openings penetrate one side of the substrate along the thickness direction of the substrate. The first channels and the first openings are connected in a one-to-one correspondence. A limiting part is disposed on the base, and the limiting part forms a second channel and two second openings. The second channel is located between the two first channels and communicates with the first channels through the second openings. Multiple hot riveting posts are respectively disposed in two of the first channels, and the second opening is disposed facing the hot riveting posts.

2. The bracket according to claim 1, characterized in that, The bracket includes a connecting portion disposed in the second channel to separate the second channel into a first sub-channel and a second sub-channel. One end of the connecting portion is connected to the base, and the other end is connected to the limiting portion. The first sub-channel is connected to the adjacent first channel through a second opening, and the second sub-channel is connected to the adjacent first channel through another second opening.

3. The bracket according to claim 2, characterized in that, The limiting part has a third opening, the orientation of which is opposite to that of the first opening, and both the first sub-channel and the second sub-channel are connected to the third opening.

4. The bracket according to claim 1, characterized in that, The limiting part has a chamfered edge for forming the second opening.

5. The bracket according to claim 1, characterized in that, The number of hot riveting posts is two, and each hot riveting post is disposed at the middle of the first channel in its length direction.

6. The bracket according to claim 1, characterized in that, The hot riveting post protrudes from the first channel through the first opening along its height direction.

7. The stent according to claim 6, characterized in that, Along the height direction of the hot riveting post, the height of the hot riveting post is H1, the height of the second opening is H2, and 2.1≤H1 / H2≤8.

3.

8. The bracket according to claim 7, characterized in that, 1.5 (mm) ≤ H1 ≤ 6.7 (mm), 0.3 (mm) ≤ H2 ≤ 0.8 (mm).

9. A battery pack, characterized in that, include: The circuit board and the bracket as described in any one of claims 1 to 8, wherein the circuit board is placed in the first channel and partially inserted into the second channel.

10. The battery pack according to claim 9, characterized in that, The circuit board has a limiting hole along its length, and the hot riveting post is inserted into the limiting hole.

11. The battery pack according to claim 10, characterized in that, The limiting portion has a notch at at least one end along its length direction, the notch being used to expose the circuit board.

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