BMS mounting bracket, battery box and battery assembly

Abstract

The utility model provides a kind of BMS mounting rack, battery box and battery assembly.The BMS mounting rack includes: BMS support, including first connecting section and installation section, first connecting section is connected in the first side of installation section, and with installation section forms bending structure, first connecting section is provided with first connecting structure;Compression support, it is set in the second side of installation section opposite with first side, and along the extension direction of first connecting section, compression support is located in the side of installation section away from first connecting section, compression support includes second connecting section and compression section, second connecting section is connected with compression section, second connecting section is provided with second connecting structure, and compression section extends towards installation section, and with installation section abutting cooperation.The BMS mounting rack according to the utility model can improve the installation convenience of BMS mounting rack, reduce installation difficulty, and improve installation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and more specifically, to a BMS mounting bracket, a battery box, and a battery assembly. Background Technology

[0002] In the design of a Battery Management System (BMS), the bracket serves as a crucial support structure for the BMS board, and its fixing method directly impacts the assembly efficiency, cost, and overall structural reliability of the battery system. In existing technologies, the BMS bracket is primarily fixed using sheet metal bending structures and fasteners. The BMS board and bracket are installed between the central crossbeam of the battery box and the modules, raising the issue of the installation sequence between the modules and the BMS bracket. If the modules are installed first, installing the fasteners at the bottom of the BMS bracket becomes extremely difficult; conversely, if the BMS bracket is installed first, there is a risk of the modules bumping against the BMS board when entering the box. This not only reduces installation convenience but may also damage the BMS board.

[0003] Therefore, existing BMS mounting racks suffer from poor installation convenience, high installation difficulty, and low installation efficiency. Utility Model Content

[0004] The main objective of this invention is to provide a BMS mounting bracket, battery box, and battery assembly that can improve the ease of installation of the BMS mounting bracket, reduce installation difficulty, and increase installation efficiency.

[0005] To achieve the above objectives, according to one aspect of the present invention, a BMS mounting bracket is provided, comprising:

[0006] The BMS bracket includes a first connecting section and a mounting section. The first connecting section is connected to the first side of the mounting section and forms a bent structure with the mounting section. The first connecting section is provided with a first connecting structure.

[0007] A clamping bracket is disposed on the second side of the installation section opposite to the first side and along the extension direction of the first connecting section. The clamping bracket is located on the side of the installation section away from the first connecting section. The clamping bracket includes a second connecting section and a clamping section. The second connecting section is connected to the clamping section and is provided with a second connecting structure. The clamping section extends toward the installation section and abuts against the installation section.

[0008] Furthermore, in the free state, the interference fit between the clamping section and the mounting section is greater than or equal to 0.5 mm.

[0009] Furthermore, in the free state, the included angle α between the first connecting segment and the mounting segment satisfies 85°≤α≤100°.

[0010] Furthermore, 91°≤α≤95°.

[0011] Furthermore, the mounting section forms a mounting surface on the side facing the clamping bracket, and mounting positions are provided on the mounting surface.

[0012] Furthermore, the clamping section includes an extension section and a tail section. The extension section extends obliquely from the second connecting section toward the mounting section. The tail section is connected to the end of the extension section away from the second connecting section and extends obliquely from the extension section away from the mounting section. The extension section and the tail section are connected by an arc section, which abuts against the mounting section.

[0013] According to another aspect of the present invention, a battery box is provided, including a box body and the aforementioned BMS mounting bracket. The box body includes a horizontal support and a vertical support. A first connecting section is mounted on the vertical support, and a second connecting section is mounted on the horizontal support. The mounting section is located between the clamping section and the vertical support and is clamped and limited by the clamping section.

[0014] Furthermore, the first connecting section is fixedly installed on the top of the vertical support, and the second connecting section is fixedly connected to the horizontal support.

[0015] Furthermore, under natural conditions, the gap between the clamping section and the vertical support is less than the thickness of the clamping position of the installation section.

[0016] According to another aspect of the present invention, a battery assembly is provided, including a battery module, a BMS board and the aforementioned battery box, wherein the BMS board is mounted on a mounting section and the battery module is mounted inside the battery box.

[0017] By applying the technical solution of this utility model, the BMS mounting bracket is fixed to the horizontal support of the battery box via the first connecting structure on the first connecting section of the BMS bracket, and the second connecting structure of the second connecting section of the clamping bracket is fixed to the vertical support of the battery box. Through the cooperation between the clamping section and the mounting section, the degree of freedom adjustment during installation and the stability of the final positioning are achieved, effectively improving the installation convenience of the BMS board and reducing the installation difficulty. At the same time, the interference fit between the clamping section and the mounting section enhances the reliability of the structure and avoids the risk of BMS board collision that may occur in traditional installation methods. This greatly improves the installation convenience of fixing the BMS mounting bracket at the bottom and improves the overall structural stability of the BMS mounting bracket. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0019] Figure 1An installation structure diagram of the BMS mounting bracket according to an embodiment of the present invention is shown;

[0020] Figure 2 An installation structure diagram of a BMS mounting bracket according to another embodiment of the present invention is shown;

[0021] Figure 3 A side view of the BMS mounting bracket according to an embodiment of the present invention is shown.

[0022] Figure 4 The diagram shows the mating structure of the clamping bracket and the vertical bracket of the BMS mounting bracket according to an embodiment of the present invention; and

[0023] Figure 5 A schematic diagram of the structure of the BMS bracket of the BMS mounting bracket according to an embodiment of the present invention is shown.

[0024] The above figures include the following reference numerals:

[0025] 1. BMS bracket; 2. First connecting section; 3. Mounting section; 4. Clamping bracket; 5. Second connecting section; 6. Clamping section; 7. First connecting structure; 8. Second connecting structure; 9. Extension section; 10. Tail section; 11. Arc section; 12. Housing; 13. Horizontal bracket; 14. Vertical bracket; 15. Fastener; 16. BMS board; 17. Press-fit bolt. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] See also Figures 1 to 5 As shown, according to an embodiment of the present invention, the BMS mounting bracket includes: a BMS bracket 1, including a first connecting section 2 and a mounting section 3, the first connecting section 2 being connected to a first side of the mounting section 3 and forming a bent structure with the mounting section 3, and a first connecting structure 7 being provided on the first connecting section 2; a clamping bracket 4, disposed on a second side of the mounting section 3 opposite to the first side, and along the extending direction of the first connecting section 2, the clamping bracket 4 being located on the side of the mounting section 3 away from the first connecting section 2, the clamping bracket 4 including a second connecting section 5 and a clamping section 6, the second connecting section 5 being connected to the clamping section 6, a second connecting structure 8 being provided on the second connecting section 5, and the clamping section 6 extending toward the mounting section 3 and abutting against the mounting section 3.

[0028] The BMS mounting bracket is fixed to the horizontal support 13 of the battery box via the first connecting structure 7 on the first connecting section 2 of the BMS bracket 1. The second connecting structure 8 of the second connecting section 5 of the clamping bracket 4 is fixed to the vertical support 14 of the battery box. Through the cooperation between the clamping section 6 and the mounting section 3, the freedom of adjustment during installation and the stability of the final positioning are achieved, which effectively improves the installation convenience of the BMS board and reduces the installation difficulty. At the same time, the interference fit between the clamping section 6 and the mounting section 3 enhances the reliability of the structure and avoids the risk of BMS board collision that may occur in traditional installation methods. This greatly improves the installation convenience of fixing the BMS mounting bracket at the bottom and improves the overall structural stability of the BMS mounting bracket.

[0029] In one embodiment, the first connecting section 2 and the mounting section 3 form an L-shaped bending structure, which facilitates the fitting design between the BMS bracket 1 and the battery box, making it easy to install and fix the BMS bracket 1 on the battery box and assemble it with the clamping bracket 4. The structure is simple, low-cost, and easy to implement. The BMS bracket 1 can be formed by bending sheet metal.

[0030] Setting the BMS bracket 1 to an L-shape not only ensures ease of installation but also simplifies the manufacturing process of the BMS bracket 1, reduces the amount of materials used, and lowers the cost of parts.

[0031] In one embodiment, the first connecting structure 7 is, for example, a connecting hole, and the second connecting mechanism 8 is, for example, a connecting hole. The connecting hole can be a smooth hole or a threaded hole.

[0032] In one embodiment, the first connecting structure 7 is a rivet, and the second connecting structure 8 is a rivet.

[0033] In one embodiment, one of the first connecting structure 7 and the second connecting structure 8 is a connecting hole, and the other is a rivet.

[0034] In one embodiment, both the first connecting structure 7 and the second connecting structure 8 are welded structures.

[0035] The first connecting structure 7 and the second connecting structure 8 can also be other structures that facilitate the installation and fixation of the BMS bracket 1 and the clamping bracket 4 on the battery box.

[0036] In one embodiment, in the free state, the interference between the clamping section 6 and the mounting section 3 is greater than or equal to 0.5 mm.

[0037] In the free state, by ensuring that the interference between the clamping section 6 and the mounting section 3 is at least 0.5mm, the clamping bracket 4 can automatically clamp and fix the BMS bracket 1 by utilizing the material elasticity of the clamping section 6 without the need for additional fasteners. This not only simplifies the assembly process and improves installation efficiency, but also enhances the stability and reliability of the fixing structure, effectively avoiding loosening caused by vibration or impact, thereby ensuring the long-term safe operation of the BMS system.

[0038] In this embodiment, in the free state, the interference fit between the clamping section 6 and the mounting section 3 being greater than or equal to 0.5 mm means that, when the mounting section 3 does not obstruct the extension of the clamping section 6, the thickness overlap between the clamping section 6 and the mounting section 3 when the clamping section 6 extends freely is greater than or equal to 0.5 mm. In other words, without the obstruction of the mounting section 3, the edge position of the clamping section 6 facing the mounting section 3 is displaced at least 0.5 mm towards the side where the mounting section 3 is located, relative to the edge position of the clamping section 6 facing the mounting section 3 when the clamping section 6 clamps the mounting section 3. This method effectively ensures the elastic clamping effect of the clamping section 6 on the bottom of the mounting section 3, improving the clamping and fixing effect of the clamping section 6 on the mounting section 3.

[0039] In one embodiment, in the free state, the included angle α between the first connecting segment 2 and the mounting segment 3 satisfies 85°≤α≤100°.

[0040] In the free state, by precisely controlling the included angle α between the first connecting section 2 and the mounting section 3 to be maintained within the range of 85° to 100°, the geometric characteristics of the L-shaped structure are effectively utilized, ensuring that the BMS bracket has good guidance and self-positioning ability during installation, greatly simplifying the assembly process. At the same time, the selection of this specific angle enhances the overall structural rigidity of the bracket, reduces the risk of deformation caused by external impact, and thus significantly improves the stability and durability of the BMS board fixing structure.

[0041] In one embodiment, 91°≤α≤95°, forming an obtuse angle between the first connecting section 2 and the mounting section 3. After the BMS bracket 1 is fixed in place via the first connecting section 2, the mounting section 3 can be raised towards the clamping bracket 4. Thus, when the lower part of the BMS bracket 1 extends into the gap between the clamping bracket 4 and the battery box, and the first connecting section 2 is then fastened to the battery box via the first connecting structure 7, the mounting section 3 is raised towards the clamping bracket 4 under the action of the first connecting section 2. This increases the interference fit between the mounting section 3 of the BMS bracket 1 and the clamping section 6 of the clamping bracket 4, further ensuring the clamping fit between the mounting section 3 and the clamping section 6 of the clamping bracket 4, and guaranteeing the stability and reliability of the BMS mounting structure.

[0042] In one embodiment, α = 92°.

[0043] In one embodiment, the mounting section 3 forms a mounting surface on the side facing the clamping bracket 4, and a mounting position is provided on the mounting surface.

[0044] The mounting surface of mounting section 3 facing the clamping bracket 4 is designed with a dedicated mounting position. This mounting position ensures that the BMS board 16 can be quickly and accurately positioned during assembly. Through the synergistic effect of the mounting position and the clamping section 6, the BMS board can be firmly fixed even in a limited space. This not only greatly improves the convenience and efficiency of installation, but also ensures the reliability of electrical connections and the structural stability of the entire BMS system, effectively preventing functional failures or safety issues caused by inaccurate or loose installation.

[0045] In one embodiment, a mounting position is provided with a rivet bolt 17. When installing the BMS board 16, the BMS board 16 can be mounted on the rivet bolt 17, and then the BMS board 16 is locked and fixed by installing nuts on the rivet bolt 17. In this embodiment, there are four rivet bolts 17, which are respectively set at the four corners of the BMS board 16. Fixing holes are provided at the four corners of the BMS board 16. After the rivet bolt 17 passes through the fixing holes, the nuts are installed, and the BMS board 16 is fixed to the mounting section 3 by the nuts.

[0046] In one embodiment, the mounting position can also be provided with a snap-fit ​​structure, and the BMS board 16 can be snapped and fixed using the snap-fit ​​structure.

[0047] In one embodiment, the clamping section 6 includes an extension section 9 and a tail section 10. The extension section 9 extends obliquely from the second connecting section 5 toward the mounting section 3. The tail section 10 is connected to the end of the extension section 9 away from the second connecting section 5 and extends obliquely from the extension section 9 away from the mounting section 3. The extension section 9 and the tail section 10 are connected by an arc section 11, which abuts against the mounting section 3.

[0048] In this embodiment, the clamping section 6 includes an obliquely extending extension section 9 and an outwardly inclined tail section 10, which smoothly transitions through an arc section 11. This allows the BMS bracket 1 to be smoothly guided during assembly using the outwardly inclined tail section 10. Furthermore, the clamping action formed by the extension section 9 and the tail section 10 ensures a tight fit against the mounting section 3. This significantly improves the convenience and speed of installation and, due to its ingenious geometric structure, ensures a stable contact and secure fastening effect, further enhancing the reliability and overall stability of the BMS board fixing structure and effectively addressing the challenges of vibration and impact within the battery box. Because the extension section 9 and the tail section 10 smoothly transition through the arc section 11, the clamping section 6 clamps and fixes the mounting section 3 using the arc section 11. This smooth fit between the arc section 11 and the mounting section 3 prevents the clamping section 6 from scratching or damaging the mounting section 3 during the clamping process, thus providing effective protection for the mounting section 3.

[0049] The tail section 10 and the extension section 9 form a V-shaped structure, and the included angle between them is an obtuse angle. This can optimize the clamping structure of the clamping section 6, making it easier to assemble the installation section 3. When disassembling, the tail section 10 can be used to lift the clamping section 6, making it easier for the installation section 3 to come out of the gap between the clamping section 6 and the battery box, thus avoiding scratching the surface of the installation section 3.

[0050] In one embodiment, the BMS mounting bracket includes a BMS bracket 1 and two clamping brackets 4. The two clamping brackets 4 are located on both sides of the BMS bracket 1 and clamp and limit the two sides of the BMS bracket 1, thereby further ensuring the stability and reliability of the limiting structure of the clamping brackets 4 on the BMS bracket 1.

[0051] In one embodiment, the number of first connection structures 7 on the first connection segment 2 is at least two, which can further improve the stability and reliability of the connection structure between the first connection segment 2 and the battery box.

[0052] Combined with participation Figures 1 to 5 As shown, according to an embodiment of the present invention, the battery box includes a box body 12 and the aforementioned BMS mounting bracket. The box body 12 includes a horizontal support 13 and a vertical support 14. A first connecting section 2 is mounted on the vertical support 14, a second connecting section 5 is mounted on the horizontal support 13, and a mounting section 3 is located between the pressing section 6 and the vertical support 14, and is pressed and limited by the pressing section 6.

[0053] Inside the battery box housing 12, the BMS mounting bracket is connected to the vertical support 14 of the housing 12 via the first connecting section 2, while the second connecting section 5 is fixed to the horizontal support 13, forming a stable three-dimensional fixing structure. The mounting section 3 is confined between the clamping section 6 and the vertical support 14, which not only makes full use of the internal space of the housing and ensures the accurate installation and stable fixation of the BMS board inside the housing, but also enhances the shock resistance and impact resistance of the entire BMS system through the elastic clamping and limiting effect of the clamping section 6, effectively ensuring the safe and efficient operation of the battery management system under various harsh working conditions.

[0054] In one embodiment, the second connecting section 5 of the clamping bracket 4 is riveted to the horizontal bracket 13, the first connecting section 2 is riveted to the vertical bracket 14, the mounting section 3 is supported by the vertical bracket 14, and the clamping section 6 clamps and limits the position, thereby achieving stable and reliable installation and fixation of the BMS mounting bracket in the battery box.

[0055] When installing the BMS mounting bracket inside the housing 12, firstly, the clamping bracket 4 and the horizontal bracket 13 are riveted together. Then, the lower part of the BMS bracket is inserted into the gap between the clamping bracket 4 and the vertical bracket 14. The first connecting section 2 of the BMS bracket 1 is riveted to the top of the vertical bracket 14 and fixed. The lower part of the BMS bracket 1 is then clamped by the clamping bracket 4 through interference fit, thereby achieving the fastening of the lower part of the BMS bracket 1 and improving the assembly convenience of the BMS bracket 1.

[0056] In one embodiment, the first connecting segment 2 is fixedly installed on the top of the vertical bracket 14, and the second connecting segment 5 is fixedly connected to the horizontal bracket 13.

[0057] The first connecting section 2 is fixedly connected to the vertical support 14 by means of bolting, riveting or welding, and the second connecting section 5 is fixedly connected to the horizontal support 13 by means of bolting, riveting or welding.

[0058] In one embodiment, the first connecting segment 2 is mounted on the top of the vertical bracket 14 by fastener 15, and the second connecting segment 5 is fixedly connected to the horizontal bracket 13 by fastener 15, so that the first connecting segment 2 and the vertical bracket 14 form a detachable connection, and the second connecting segment 5 and the horizontal bracket 13 form a detachable connection, which facilitates the replacement and maintenance of parts.

[0059] The first connecting section 2 and the second connecting section 5 are respectively fixed to the top of the vertical bracket 14 and the horizontal bracket 13 by fasteners 15. This dual fastening strategy ensures the stable positioning and firm connection of the BMS mounting bracket in the battery box.

[0060] In one embodiment, when a battery pack contains multiple BMS boards 16, the battery box is equipped with multiple BMS mounting brackets, which are placed side by side, so that the multiple BMS boards 16 are arranged side by side, thereby shortening the X-axis dimension of the battery pack and improving the volume utilization and energy density of the battery pack.

[0061] In one embodiment, under natural conditions, the gap between the clamping section 6 and the vertical support 14 is less than the thickness of the clamping position of the mounting section 3.

[0062] In its natural state, the design gap between the clamping section 6 and the vertical support 14 is smaller than the actual thickness of the mounting section 3 at the clamping position. This structural design allows the clamping section 6 to elastically open outward under the pushing action of the BMS support during the assembly process, thereby automatically generating pre-tightening force. This ensures a stable and tight contact between the mounting section 3 and the clamping section 6, which not only effectively prevents the displacement and vibration of the BMS board in a highly dynamic environment, but also simplifies the installation steps and reduces the reliance on external fastening tools due to its passive fastening mechanism, thus significantly improving assembly efficiency and the long-term reliability of the BMS system.

[0063] In one embodiment, under natural conditions, the gap between the clamping section 6 and the vertical support 14 can also be greater than or equal to the thickness of the clamping position of the mounting section 3, and the clamping limit of the clamping section 6 on the mounting section 3 can be achieved by lifting the mounting section 3.

[0064] According to an embodiment of the present invention, the battery assembly includes a battery module, a BMS board, and the aforementioned battery box. The BMS board 16 is mounted on the mounting section 3, and the battery module is mounted inside the battery box.

[0065] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0066] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0067] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A BMS mounting bracket, characterized in that, include: BMS bracket (1) includes a first connecting section (2) and a mounting section (3). The first connecting section (2) is connected to the first side of the mounting section (3) and forms a bending structure with the mounting section (3). A first connecting structure (7) is provided on the first connecting section (2). A clamping bracket (4) is disposed on the second side of the mounting section (3) opposite to the first side and along the extension direction of the first connecting section (2). The clamping bracket (4) is located on the side of the mounting section (3) away from the first connecting section (2). The clamping bracket (4) includes a second connecting section (5) and a clamping section (6). The second connecting section (5) is connected to the clamping section (6). A second connecting structure (8) is provided on the second connecting section (5). The clamping section (6) extends toward the mounting section (3) and abuts against the mounting section (3).

2. The BMS mounting bracket according to claim 1, characterized in that, In the free state, the interference fit between the clamping section (6) and the mounting section (3) is greater than or equal to 0.5 mm.

3. The BMS mounting bracket according to claim 1, characterized in that, In the free state, the included angle α between the first connecting segment (2) and the mounting segment (3) satisfies 85°≤α≤100°.

4. The BMS mounting bracket according to claim 3, characterized in that, 91°≤α≤95°。 5. The BMS mounting bracket according to claim 1, characterized in that, The mounting section (3) forms a mounting surface on the side facing the clamping bracket (4), and a mounting position is provided on the mounting surface.

6. The BMS mounting bracket according to claim 1, characterized in that, The pressing section (6) includes an extension section (9) and a tail section (10). The extension section (9) extends obliquely from the second connecting section (5) toward the mounting section (3). The tail section (10) is connected to the end of the extension section (9) away from the second connecting section (5) and extends obliquely from the extension section (9) away from the mounting section (3). The extension section (9) and the tail section (10) are connected by an arc section (11), which abuts against the mounting section (3).

7. A battery box, characterized in that, The device includes a housing (12) and a BMS mounting bracket according to any one of claims 1 to 6. The housing (12) includes a horizontal support (13) and a vertical support (14). The first connecting section (2) is mounted on the vertical support (14), and the second connecting section (5) is mounted on the horizontal support (13). The mounting section (3) is located between the clamping section (6) and the vertical support (14) and is clamped and limited by the clamping section (6).

8. The battery box according to claim 7, characterized in that, The first connecting segment (2) is fixedly installed on the top of the vertical support (14), and the second connecting segment (5) is fixedly connected to the horizontal support (13).

9. The battery box according to claim 7, characterized in that, In its natural state, the gap between the clamping section (6) and the vertical support (14) is less than the thickness of the clamping position of the mounting section (3).

10. A battery assembly, characterized in that, The battery module includes a battery module, a BMS board (16), and a battery box according to any one of claims 7 to 9, wherein the BMS board (16) is mounted on the mounting section (3), and the battery module is mounted inside the battery box.

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