bracket assembly and battery pack

Abstract

This utility model discloses a bracket assembly and a battery pack. The bracket assembly includes a first bracket and a second bracket. The first bracket includes a first main body and a first mating part connected to each other, and a positioning hole is formed on the first main body. The second bracket includes a second main body, a second mating part, and a positioning post. The second mating part and the positioning post are respectively disposed on the second main body, and the first and second mating parts are snap-fitted together. The positioning post is inserted into the positioning hole. During the assembly process of the first and second brackets, the positioning post and the positioning hole gradually engage, and the first and second mating parts are smoothly snapped together under the directional action between the positioning post and the positioning hole. After the first and second brackets are fixed, the positioning post engages with the hole wall of the positioning hole, thereby further limiting the first and second brackets and preventing them from moving in the direction perpendicular to the axis of the positioning hole, thus ensuring the stability of the connection between the first and second mating parts.

Description

Technical Field

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

[0002] The current design uses a combination of snap-fit ​​modules and recessed brackets for the module cover, with the bracket employing a mating design for assembly. Support ribs are then placed around the bracket to support the module cover. While the snap-fit ​​provides Z-axis fixation, the X and Y-plane limits are controlled by the gap between the snap-fit ​​side and the recessed sidewall. During X and Y-axis vibrations, the stress is borne by the snap-fit ​​sidewall. After environmental aging and vibration, the snap-fit ​​may crack, and the relative displacement between the module cover and the bracket increases, leading to more severe wear on the cover. Utility Model Content

[0003] One objective of this invention is to provide a bracket assembly and battery pack to solve the problem of poor stability in snap-fit ​​connections.

[0004] To achieve the above objectives, the present invention provides a solution as follows: the bracket assembly includes a first bracket and a second bracket; the first bracket includes a first main body and a first mating part that are connected to each other, and a positioning hole is provided on the first main body; the second bracket includes a second main body, a second mating part and a positioning post, the second mating part and the positioning post are respectively disposed on the second main body, the first mating part and the second mating part are snap-fitted together, and the positioning post is inserted into the positioning hole.

[0005] Optionally, the diameter of the positioning pin is D1, and the diameter of the positioning hole is D2, where 0.1 mm ≤ D2 - D1 ≤ 0.2 mm.

[0006] Optionally, the positioning post includes a column portion and a support portion, the column portion is connected to the second main body portion, the support portion is connected to the column portion and the second main body portion respectively, the column portion is inserted into the positioning hole, and the support portion abuts against the area of ​​the first main body portion where the positioning hole is opened.

[0007] Optionally, there may be multiple supports, which are arranged at intervals around the axial direction of the positioning column.

[0008] Optionally, the support includes a first plate and a second plate. The first plate is connected to the column and the second main body, respectively. The second plate is connected to the column and the first plate, respectively. The second plate is inserted into the positioning hole, and the first plate abuts against the area of ​​the first main body where the positioning hole is opened.

[0009] Optionally, the length of the first plate is greater than that of the second plate in the direction perpendicular to the axis of the positioning column.

[0010] Optionally, the end of the column away from the first plate is provided with a chamfer, and the end of the second plate away from the first plate is provided with a chamfer.

[0011] Optionally, there are multiple first mating parts and multiple second mating parts, with multiple first mating parts disposed on opposite sides of the first main body and multiple second mating parts disposed on opposite sides of the second main body.

[0012] Optionally, the positioning hole includes a round hole and an oblong hole, the round hole being circular and the oblong hole being oblong; the positioning post includes a first post and a second post respectively disposed on the second main body, the first post being inserted into the round hole and the second post being inserted into the oblong hole, the length of the oblong hole being β and the diameter of the second post being 1.5≤β≤2.

[0013] The present invention also includes a battery pack, which includes a battery and a support assembly as described in any of the above claims, the support assembly being disposed on the battery.

[0014] The beneficial effects of this utility model are as follows: During the assembly process of the first and second brackets, the positioning pins and positioning holes gradually engage, playing a directional guiding role. The first and second mating parts smoothly engage together under the directional action of the positioning pins and positioning holes, ensuring that the first and second brackets are fixed to each other. After the first and second brackets are fixed, the positioning pins engage with the hole walls of the positioning holes, further limiting the movement of the first and second brackets and preventing them from moving in the direction perpendicular to the axis of the positioning holes, thus ensuring the stability of the connection between the first and second mating parts. Attached Figure Description

[0015] 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.

[0016] Figure 1 This is a schematic diagram of the structure of the support assembly provided in this embodiment of the utility model;

[0017] Figure 2 This is a partially enlarged schematic diagram of the positioning column area of ​​the bracket assembly provided in this embodiment of the utility model;

[0018] Figure 3 This is a schematic cross-sectional view of the support assembly provided in this embodiment of the present invention from a III-III perspective;

[0019] Figure 4 This is a schematic cross-sectional view of the support assembly provided in this embodiment of the present invention from the IV-IV perspective;

[0020] Figure 5 This is provided by the embodiment of the present utility model. Figure 4 A magnified schematic diagram of a portion of region A in the middle;

[0021] Figure 6 This is a schematic diagram of the structure of the second support provided in an embodiment of the present invention;

[0022] Figure 7 This is a partially enlarged schematic diagram of the positioning column area of ​​the second bracket provided in this embodiment of the utility model;

[0023] Figure 8 This is a top view of the support assembly provided in an embodiment of the present invention.

[0024] Reference numerals in the attached drawings: bracket assembly 100, first bracket 10, positioning hole 101, first main body 12, first mating part 14, second bracket 20, second main body 21, second mating part 22, positioning post 23, column part 24, support part 25, first plate 26, second plate 27, round hole 102, oblong hole 103

[0025] First pillar 28, second pillar 29. Detailed Implementation

[0026] 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.

[0027] Please see Figures 1 to 5 As shown, Figure 1 This is a structural schematic diagram of the support assembly 100 provided in this embodiment of the utility model. Figure 2 This is a partially enlarged schematic diagram of the positioning post 23 area of ​​the bracket assembly 100 provided in this embodiment of the present invention. Figure 3 This is a schematic cross-sectional view of the support assembly 100 provided in this embodiment of the present invention from a III-III perspective. Figure 4 This is a schematic cross-sectional view of the support assembly 100 provided in this embodiment of the present invention from the IV-IV perspective. Figure 5 This is provided by the embodiment of the present utility model. Figure 4 A magnified schematic diagram of a portion of region A in the middle.

[0028] This utility model protects a support assembly 100, which includes a first support 10 and a second support 20. The first support 10 can be made of metal, ceramic, plastic, etc., and the second support 20 can also be made of metal, ceramic, plastic, etc. The first support 10 and the second support 20 are detachably connected to each other. When the first support 10 and the second support 20 are connected together, they are fixed to each other. When it is necessary to disassemble the first support 10 and the second support 20, they can be separated by hand, which is convenient and quick.

[0029] The first support 10 includes a first main body 12 and a first mating part 14 connected to each other. The first main body 12 has a positioning hole 101, which can be circular, square, or other shapes. The second support 20 includes a second main body 21, a second mating part 22, and a positioning post 23. The second mating part 22 and the positioning post 23 are respectively disposed on the second main body 21. The first mating part 14 and the second mating part 22 are snap-fit ​​connected, and the positioning post 23 is inserted into the positioning hole 101. A snap-fit ​​is a mechanism used for the embedded connection or overall locking of one part to another, typically used for the mutual engagement of parts with a certain degree of flexibility. The biggest advantage of a snap-fit ​​connection is its ease of installation and disassembly, allowing for tool-free disassembly. One of the first mating part 14 and the second mating part 22 is a locking part, and the other is a latching part.

[0030] In this embodiment, during the assembly of the first bracket 10 and the second bracket 20, the positioning post 23 and the positioning hole 101 gradually engage, serving as a directional guide. The first mating part 14 and the second mating part 22 smoothly engage together under the directional action between the positioning post 23 and the positioning hole 101, ensuring that the first bracket 10 and the second bracket 20 are fixed to each other. After the first bracket 10 and the second bracket 20 are fixed, the positioning post 23 engages with the hole wall of the positioning hole 101, further limiting the first bracket 10 and the second bracket 20 and preventing them from moving in a direction perpendicular to the axis of the positioning hole 101, thus ensuring the stability of the connection between the first mating part 14 and the second mating part 22.

[0031] The mating and limiting directions of the first mating part 14 and the second mating part 22 can be the thickness direction of the first main body part 12 or the thickness direction of the second main body part 21, and the axial direction of the positioning hole 101 can be the same as the mating and limiting directions of the first mating part 14 and the second mating part 22. After the positioning pin 23 is inserted into the positioning hole 101, the first bracket 10 and the second bracket 20 are mutually limited in a plane direction perpendicular to the axis of the positioning hole 101. At the same time, the first mating part 14 and the second mating part 22 cooperate to limit the first bracket 10 and the second bracket 20 in the axial direction of the positioning hole 101, thereby ensuring the relative fixation between the first bracket 10 and the second bracket 20.

[0032] The number of positioning holes 101 is at least two, such as two positioning holes 101, three positioning holes 101, four positioning holes 101, etc. The number of positioning pins 23 is at least two, such as two positioning pins 23, three positioning pins 23, four positioning pins 23, etc. The multiple positioning pins 23 and the multiple positioning holes 101 cooperate with each other. When the multiple positioning pins 23 and the multiple positioning holes 101 cooperate together, they can prevent the first bracket 10 and the second bracket 20 from rotating relative to the axis of the positioning holes 101, thus ensuring the connection stability between the first bracket 10 and the second bracket 20.

[0033] The diameter of the positioning post 23 is D1, which refers to the maximum width of the positioning post 23 in the horizontal direction. The diameter of the positioning hole 101 is D2, which refers to the maximum width of the positioning hole 101 in the radial direction. 0.1 mm ≤ D2 - D1 ≤ 0.2 mm, for example, 0.1, 0.12, 0.14, 0.15, 0.18, 0.20, etc. D2 - D1 represents the gap between the positioning post 23 and the positioning hole 101. Within this range, the positioning post 23 can be easily inserted into the positioning hole 101, and the first bracket 10 and the second bracket 20 will not experience significant wobbling. When the gap exceeds this range, the radial displacement of the positioning post 23 in the positioning hole 101 is relatively large, and wobbling will occur between the first bracket 10 and the second bracket 20. When the gap is less than this range, the positioning post 23 cannot be inserted into the positioning hole 101.

[0034] Please see Figures 1 to 7 As shown, Figure 6 This is a schematic diagram of the structure of the second support 20 provided in this embodiment of the present invention. Figure 7 This is a partially enlarged schematic diagram of the positioning post 23 area of ​​the second bracket 20 provided in this embodiment of the present invention.

[0035] The positioning post 23 includes a post portion 24 and a support portion 25. The post portion 24 is connected to the second main body portion 21, and the support portion 25 is connected to both the post portion 24 and the second main body portion 21. The post portion 24 is inserted into the positioning hole 101. The post portion 24 serves to position the first bracket 10 and the second bracket 20 during assembly and to limit their mutual engagement. The support portion 25 extends radially from the post portion 24, providing support to the post portion 24. Through the force transmission of the support portion 25, the post portion 24, the support portion 25, and the second main body portion 21 are connected as a whole. The support portion 25 supports the post portion 24, preventing it from collapsing or breaking.

[0036] In addition, the support part 25 abuts against the area where the positioning hole 101 is opened in the first main body part 12. The structural strength of the area where the positioning hole 101 is opened in the first main body part 12 is damaged and the structural strength decreases. The support part 25 provides support to this area to prevent local depression.

[0037] There are multiple support parts 25, which are arranged at intervals around the axial direction of the positioning post 23. (See attached image) Figure 6 The number of support parts 25 shown is four. Multiple support parts 25 support the column 24 from different directions. In this way, no matter which direction the column 24 is subjected to force, the support parts 25 can support the column 24 well and provide support for the column 24.

[0038] The support portion 25 includes a first plate 26 and a second plate 27. The first plate 26 connects to the column portion 24 and the second main body portion 21, respectively. The second plate 27 connects to both the column portion 24 and the first plate 26, and is inserted into the positioning hole 101. The second plate 27 is connected to the second main body portion 21 via the first plate 26, and the second main body portion 21 indirectly supports the second plate 27. The second plate 27 extends along the axial direction of the column portion 24 to support it, while the first plate 26 extends radially to support it. The first plate 26 and the second plate 27 cooperate to provide overall support to the column portion 24 both axially and radially.

[0039] In addition, the first plate 26 abuts against the area where the positioning hole 101 is opened in the first main body 12. The structural strength of the area where the positioning hole 101 is opened in the first main body 12 is damaged and the structural strength decreases. The first plate 26 provides support to this area to prevent local dents.

[0040] In the above embodiment, the difference between the diameter D2 of the positioning hole 101 and the diameter D1 of the positioning post 23, D2-D1, is the distance between the second plate 27 and the hole wall of the positioning hole 101.

[0041] In the direction perpendicular to the axis of the positioning post 23, the length of the first plate 26 is greater than that of the second plate 27. Since the first plate 26 is not inserted into the positioning hole 101, the positioning hole 101 does not limit the first plate 26. The first plate 26 can be extended as needed to be longer than the second plate 27; a longer first plate 26 has greater structural strength and can better support the second plate 27 and the post 24. The length of the first plate 26 can be between one and two times the length of the second plate 27.

[0042] The end of the column 24 away from the first plate 26 is chamfered, and the end of the second plate 27 away from the first plate 26 is also chamfered. The chamfer can be a rounded corner or a beveled corner. During the process of the positioning column 23 and the positioning hole 101 being fitted together, the chamfer first contacts the positioning hole 101, which acts as a guide to ensure that the positioning column 23 can be smoothly inserted into the positioning hole 101.

[0043] There are multiple first mating parts 14 and multiple second mating parts 22. The multiple first mating parts 14 are disposed on opposite sides of the first main body 12, and the multiple second mating parts 22 are disposed on opposite sides of the second main body 21. The first mating parts 14 can be disposed on opposite sides of the width direction of the first main body 12, and the second mating parts 22 can be disposed on opposite sides of the width direction of the second main body 21. After the multiple first mating parts 14 and multiple second mating parts 22 cooperate with each other, the latches located on opposite sides of the bracket assembly 100 have a mutual restraining effect, thereby further improving the stability of the connection between the first bracket 10 and the second bracket 20.

[0044] Please see Figures 1-5 as well as Figure 8 , Figure 8 This is a top view of the support assembly provided in an embodiment of the present invention.

[0045] In one embodiment, the positioning hole 101 includes a circular hole 102 and an oblong hole 103. The circular hole 102 is circular, and the oblong hole 103 is oblong. Here, the oblong shape can be a hole-like structure with a length greater than its width, such as an ellipse, a racetrack shape, or a square shape. The positioning post 23 includes a first post 28 and a second post 29 respectively disposed on the second main body 21. The first post 28 is inserted into the circular hole 102, and the second post 29 is inserted into the oblong hole 103. The ratio of the length of the oblong hole 103 to the diameter of the second post 29 is β, where 1.5 ≤ β ≤ 2, for example, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, etc. The first post 28 and the circular hole 102 can fit tightly together, thereby jointly fixing the first support 10 and the second support 20 under the cooperative action of the first mating part 14 and the second mating part 22. The second post 29 engages with the waist-shaped hole 103. The second post 29 can move along the length of the waist-shaped hole 103, thereby playing a local limiting role. The second post 29 can only move within the length range of the waist-shaped hole 103, thus limiting the first bracket 10 and the second bracket 20 to only move within a local range during the engagement process, thereby improving the assembly efficiency of the first mating part 14 and the second mating part 22.

[0046] 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.

[0047] It should also be noted that when a component is referred to as "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 "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component through an intermediary component.

[0048] 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.

[0049] 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 assembly, characterized in that, The support assembly also includes: The first support includes a first main body portion and a first mating portion connected to each other, wherein the first main body portion has a positioning hole; and The second bracket includes a second main body, a second mating part, and a positioning post. The second mating part and the positioning post are respectively disposed on the second main body. The first mating part and the second mating part are snap-fitted together, and the positioning post is inserted into the positioning hole.

2. The support assembly according to claim 1, characterized in that, The diameter of the positioning post is D1, and the diameter of the positioning hole is D2, where 0.1 mm ≤ D2 - D1 ≤ 0.2 mm.

3. The support assembly according to claim 1, characterized in that, The positioning post includes a column portion and a support portion. The column portion is connected to the second main body portion, and the support portion is connected to both the column portion and the second main body portion. The column portion is inserted into the positioning hole, and the support portion abuts against the area of ​​the first main body portion where the positioning hole is located.

4. The support assembly according to claim 3, characterized in that, The number of the support parts is multiple, and the multiple support parts are arranged at intervals around the axis of the positioning column.

5. The support assembly according to claim 3, characterized in that, The support portion includes a first plate and a second plate. The first plate is connected to the column portion and the second main body portion respectively. The second plate is connected to the column portion and the first plate respectively. The second plate is inserted into the positioning hole. The first plate abuts against the area of ​​the first main body portion where the positioning hole is opened.

6. The support assembly according to claim 5, characterized in that, In the direction perpendicular to the axis of the positioning column, the length of the first plate is greater than that of the second plate.

7. The support assembly according to claim 5, characterized in that, The end of the column away from the first plate is chamfered, and the end of the second plate away from the first plate is also chamfered.

8. The support assembly according to any one of claims 1-7, characterized in that, The number of first mating parts and second mating parts are multiple, with multiple first mating parts disposed on opposite sides of the first main body and multiple second mating parts disposed on opposite sides of the second main body.

9. The support assembly according to any one of claims 1-7, characterized in that, The positioning hole includes a round hole and an oblong hole, wherein the round hole is circular and the oblong hole is oblong; The positioning post includes a first post and a second post respectively disposed on the second main body. The first post is inserted into the circular hole, and the second post is inserted into the oblong hole. The ratio of the length of the oblong hole to the diameter of the second post is β, where 1.5≤β≤2.

10. A battery pack, characterized in that, The battery pack includes: a battery and a support assembly as described in any one of claims 1 to 9, the support assembly being disposed on the battery.

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