BMS (battery management system) mounting bracket

Abstract

The utility model discloses a BMS (battery management system) mounting support which comprises a mounting frame and a fixing frame, the fixing frame is fixedly arranged on one side of the mounting frame, a connecting hole and a fastening bolt are arranged on the fixing frame, the fastening bolt penetrates through the connecting hole and then is connected with a screw hole in a battery frame, a buffer part is arranged at the connecting hole, and the fixing frame is fixedly arranged on the fixing frame. The fixing frame is connected with the battery frame through the buffer piece; the device has the advantages of simple structure and better reliability.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery management, and in particular relates to a BMS mounting bracket. Background Art

[0002] The Battery Management System (BMS) is an electronic system used to manage, monitor and protect battery packs (especially lithium-ion battery packs). The main functions of BMS include battery status monitoring, charge and discharge management, balance management, fault diagnosis, etc. The BMS module is usually fixed in the battery pack using a plate bracket. The existing plate bracket (such as Figure 1 The structure is relatively simple and is generally made by die stamping. It includes an integrally formed mounting frame and a fixing frame. The BMS module is installed on the mounting frame. The fixing frame is located on one side of the mounting frame and is used to connect to the battery frame.

[0003] Conventionally, the fixing frame is provided with connection holes, through which the fastening bolts pass and are connected to the screw holes on the battery frame. Since the mounting frame is suspended and lacks reliable support, during the whole package mechanical vibration simulation process, the mounting frame and the BMS module installed on the mounting frame will vibrate significantly, while the vibration amplitude of the battery frame is smaller. The different vibration frequencies of the two can easily cause the plate bracket to bend and be damaged. The reliability needs to be improved, and reinforcement treatment is required, such as modifying the structural design or changing the connection point between the fixing frame and the battery frame. Among them, modifying the structure will lead to the complication of the bracket structure, which not only increases the production cost, but also may interfere with the rest of the battery frame. Changing the connection point between the fixing frame and the battery frame may cause new failure problems in the rest of the system, so there is still room for improvement. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a BMS installation bracket with a simple structure and good reliability.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: a BMS mounting bracket, including a mounting frame and a fixing frame, the fixing frame is fixedly arranged on one side of the mounting frame, the fixing frame is provided with a connecting hole and a fastening bolt, the fastening bolt passes through the connecting hole and is connected to the screw hole on the battery frame, a buffer is provided at the connecting hole, and the fixing frame is connected to the battery frame through the buffer.

[0006] Preferably, the buffer member includes an annular buffer pad, an upper end surface of the buffer pad abuts against the fixing frame, and the buffer pad is communicated with the connecting hole.

[0007] Preferably, the buffer pad is a steel wool buffer pad, and the upper end surface of the steel wool buffer pad is welded and fixed to the fixing frame.

[0008] Preferably, the steel wool buffer pad is provided with at least two through-holes, the through-holes passing through the upper and lower ends of the steel wool buffer pad, and the upper ends of the through-holes are welding points between the steel wool buffer pad and the fixing frame.

[0009] Preferably, there are three perforations, which are equally spaced along the circumferential direction.

[0010] Preferably, the buffer comprises an outer sleeve and an inner sleeve, the outer sleeve passes through the connecting hole and is fixedly connected to the inner wall of the connecting hole, the inner sleeve is located inside the outer sleeve, and the inner sleeve and the outer sleeve are connected via a rubber ring.

[0011] Preferably, the height of the upper end surface of the inner sleeve is higher than the height of the upper end surface of the outer sleeve, and the height of the lower end surface of the inner sleeve is lower than the height of the lower end surface of the outer sleeve.

[0012] Compared with the prior art, the advantages of the present invention are:

[0013] 1. By installing a buffer between the fixing bracket and the battery frame, when the entire package is subjected to mechanical vibration, the buffer can play a role in buffering and reducing vibrations of different frequencies between the BMS module and the battery frame, reducing the risk of damage caused by bending of the mounting bracket and improving reliability;

[0014] 2. This technical solution is to add a buffer to the original BMS mounting bracket. The structure is simple, and the buffer is located between the fixing bracket and the battery frame, which has little impact on the structural design. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the existing BMS mounting bracket structure;

[0016] Figure 2 This is a schematic diagram of the structure of the utility model Figure 1 ;

[0017] Figure 3 Schematic diagram of the explosion structure of the utility model Figure 1 ;

[0018] Figure 4 for Figure 2 A magnified schematic diagram of point A in the middle;

[0019] Figure 5 This is a schematic diagram of the structure of the utility model Figure 2 ;

[0020] Figure 6 Schematic diagram of the explosion structure of the utility model Figure 2 ;

[0021] Figure 7 It is a schematic diagram of the partial cross-sectional structure of the utility model.

[0022] In the figure: 1, mounting bracket; 2, fixing bracket; 21, connecting hole; 3, buffer member; 31, buffer pad; 311, perforation; 32, outer sleeve; 33, inner sleeve; 34, rubber ring. DETAILED DESCRIPTION

[0023] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0024] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0025] Example 1: Figure 2 and Figure 3 As shown, a BMS mounting bracket includes a mounting frame 1 and a fixing frame 2. The fixing frame 2 is fixedly arranged on one side of the mounting frame 1. A connecting hole 21 and a fastening bolt (not shown in the figure) are provided on the fixing frame 2. The fastening bolt passes through the connecting hole 21 and is connected to the screw hole on the battery frame (not shown in the figure). A buffer 3 is provided at the connecting hole 21, and the fixing frame 2 is connected to the battery frame through the buffer 3.

[0026] In this embodiment, two connecting holes 21 are provided.

[0027] In this embodiment, the mounting frame 1 and the fixing frame 2 are integrally formed and manufactured by die stamping.

[0028] By arranging a buffer 3 between the fixing bracket 2 and the battery frame, when the entire package is subjected to mechanical vibration, the buffer 3 can play a buffering and vibration reduction role to absorb vibrations of different frequencies between the BMS module and the battery frame, reduce the risk of bending and damage to the mounting bracket, and improve reliability.

[0029] Example 2: Figures 2 to 4 As shown, the rest of the parts are the same as those in the first embodiment, except that the buffer member 3 includes an annular buffer pad 31, the upper end surface of the buffer pad 31 abuts against the fixing frame 2, the buffer pad 31 is connected to the connecting hole 21, and the lower end surface of the buffer pad 31 abuts against the battery frame.

[0030] In this embodiment, the cushion pad 31 is a steel wool cushion pad. The steel wool cushion pad has good elasticity and energy absorption capacity, is wear-resistant and fatigue-resistant, and has a long service life. The upper end surface of the steel wool cushion pad is welded to the fixing frame 2. Furthermore, the steel wool cushion pad is provided with at least two through-holes 311, which pass through the upper and lower ends of the steel wool cushion pad. The upper ends of the through-holes 311 serve as welding points between the steel wool cushion pad and the fixing frame 2.

[0031] Preferably, three through-holes 311 are provided, and the three through-holes 311 are distributed at equal intervals along the circumferential direction.

[0032] Example 3: Figures 5 to 7 As shown, the remaining parts are the same as those of the first embodiment, except that the buffer member 3 includes an outer sleeve 32 and an inner sleeve 33. The outer sleeve 32 passes through the connection hole 21 and is fixedly connected to the inner wall of the connection hole 21. The inner sleeve 33 is located inside the outer sleeve 32. The inner sleeve 33 and the outer sleeve 32 are connected by a rubber ring 34, and the fastening bolt passes through the inner sleeve 33. The rubber ring 34 and the outer sleeve 32, as well as the rubber ring 34 and the inner sleeve 33, are fixed by vulcanization, and the rubber ring 34 mainly plays a role in buffering and reducing vibration.

[0033] In this embodiment, the height of the upper end surface of the inner sleeve 33 is higher than the height of the upper end surface of the outer sleeve 32 , and the height of the lower end surface of the inner sleeve 33 is lower than the height of the lower end surface of the outer sleeve 32 .

[0034] The above is an exemplary description of the present invention in conjunction with the accompanying drawings. It is obvious that the implementation of the present invention is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. A BMS mounting bracket, comprising a mounting bracket (1) and a fixing bracket (2), wherein the fixing bracket (2) is fixedly arranged on one side of the mounting bracket (1), and a connecting hole (21) and a fastening bolt are provided on the fixing bracket (2), and the fastening bolt passes through the connecting hole (21) and is connected to a screw hole on a battery frame, characterized in that A buffer member (3) is provided at the connection hole (21), and the fixing frame (2) is connected to the battery frame via the buffer member (3).

2. A BMS mounting bracket according to claim 1, characterized in that The buffer member (3) comprises an annular buffer pad (31), the upper end surface of the buffer pad (31) abuts against the fixing frame (2), and the buffer pad (31) is connected to the connecting hole (21).

3. A BMS mounting bracket according to claim 2, characterized in that The buffer pad (31) is a steel wool buffer pad, and the upper end surface of the steel wool buffer pad is welded and fixed to the fixing frame (2).

4. A BMS mounting bracket according to claim 3, characterized in that At least two through-holes (311) are provided on the steel wool buffer pad, and the through-holes (311) pass through the upper and lower ends of the steel wool buffer pad, and the upper ends of the through-holes (311) are welding points between the steel wool buffer pad and the fixing frame (2).

5. A BMS mounting bracket according to claim 4, characterized in that There are three perforations (311), and the three perforations (311) are distributed at equal intervals along the circumferential direction.

6. The BMS mounting bracket according to claim 1, characterized in that The buffer member (3) comprises an outer sleeve (32) and an inner sleeve (33); the outer sleeve (32) passes through the connecting hole (21) and is fixedly connected to the inner wall of the connecting hole (21); the inner sleeve (33) is located inside the outer sleeve (32); and the inner sleeve (33) and the outer sleeve (32) are connected via a rubber ring (34).

7. A BMS mounting bracket according to claim 6, characterized in that The height of the upper end surface of the inner sleeve (33) is higher than the height of the upper end surface of the outer sleeve (32), and the height of the lower end surface of the inner sleeve (33) is lower than the height of the lower end surface of the outer sleeve (32).

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