Battery management module support and battery pack

Abstract

The utility model provides a battery management module support and a battery pack. The battery management module support is used for supporting a battery management module on a battery pack bottom protection plate and comprises a top plate, a bottom plate and side plates. The upper surface of the top plate is propped against the bottom of the battery management module to support the battery management module; the lower surface of the bottom plate is propped against the battery pack bottom protection plate; the side plate is connected between the top plate and the bottom plate, and a mounting hole for limiting a rivet nut is formed in the side plate. The utility model has the advantages of improving the rigidity of the battery pack bottom guard plate and being convenient to assemble and disassemble.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage devices, in particular to a bracket for a battery management module. The utility model also relates to a battery pack including the above-mentioned bracket for a battery management module. Background Art

[0002] BMS (Battery Management System) is one of the core components of a battery pack in applications such as electric vehicles (EV), hybrid electric vehicles (HEV), and energy storage systems. It usually has functions such as state of charge monitoring, cell health state assessment, thermal management, overload protection, and fault diagnosis to ensure that the battery works in a safe and efficient state. Thus, the battery management module is of great significance to the stable operation and service life extension of the battery pack and is an indispensable part of the battery pack.

[0003] With the development of battery technology, the technology related to the battery management module is also constantly progressing. Currently, for a battery pack adopting a cold plate top-mounted scheme, in order to avoid the influence of the cold plate structure on the overhaul and maintenance process of the battery pack, its battery management module is usually fixed to the front beam and the middle beam at the bottom of the battery pack by welding. Although this structure of the battery pack can save the steps of removing the upper cover and the top cold plate structure during the process of replacing the battery management module, since it is installed on one side of the battery pack close to the bottom guard plate, it is more vulnerable to the impact caused by the impact of the bottom guard plate of the battery pack. In addition, the installation method adopted by it makes its disassembly process relatively difficult and there are certain inconveniences.

[0004] From the above background art, it can be known that the installation structure of the battery management module of the existing battery pack adopting the cold plate top-mounted scheme is vulnerable to the impact brought by the impact of the bottom guard plate and has the defect that the installation and disassembly processes are inconvenient. Summary of the Utility Model

[0005] In view of this, the utility model aims to propose a bracket for a battery management module, which can improve the stiffness of the bottom guard plate of the battery pack, reduce the influence caused by the impact of the bottom guard plate, and has the characteristics of being easy to install and disassemble.

[0006] To achieve the above object, the technical solution of the utility model is realized as follows:

[0007] A bracket for a battery management module of the utility model is used for supporting the battery management module on the bottom guard plate of the battery pack and includes a top plate, the upper surface of which abuts against the bottom of the battery management module to form the support for the battery management module;

[0008] a bottom plate, the lower surface of which abuts against the bottom guard plate of the battery pack;

[0009] The side plate is connected between the top plate and the bottom plate, and mounting holes for limiting blind rivet nuts are provided on the side plate.

[0010] Further, the mounting holes are configured as "U"-shaped holes opening upward.

[0011] Further, the side plate is respectively perpendicular to the top plate and the bottom plate.

[0012] Further, the side plates are configured as two that are symmetrically distributed about the geometric centers of the top plate and the bottom plate.

[0013] Further, the side plate is connected to the edge positions of the top plate and the bottom plate.

[0014] Further, a relief groove is provided at the intersection of the top plate and the side plate, and the blind rivet nut can slide vertically into the mounting hole due to the provision of the relief groove.

[0015] Further, a rib plate is further included, and the rib plate is vertically connected between the top plate and the bottom plate.

[0016] Further, the rib plate is configured as one disposed between the two side plates or a plurality of rib plates equidistantly distributed along the length direction of the top plate.

[0017] Further, a relief hole is provided on the bottom plate, and the relief hole is provided at the end of the bottom plate close to the mounting hole.

[0018] Compared with the prior art, the present utility model has the following advantages:

[0019] For the battery management module bracket and the battery pack of the present utility model, by providing a bracket structure composed of a top plate, a bottom plate and a side plate between the battery management module and the bottom guard plate of the battery pack, support and limitation for the battery management module can be formed. Among them, the top plate abutting on the battery management module and the bottom plate abutting on the bottom guard plate of the battery pack can become an integral body under the connection action of the side plate, thereby playing a role in improving the stiffness of the bottom guard plate of the battery pack, and to a certain extent avoiding the influence on the battery management module caused by the impact on the bottom guard plate of the battery pack. The mounting holes provided on the side plate reserve positions for the limit installation of the blind rivet nuts. Compared with the welding method in the prior art, the method of fixed installation using blind rivet nuts has advantages in terms of easy installation and disassembly, thus achieving the invention purpose of reducing the disassembly difficulty.

[0020] In addition, by setting the mounting holes as "U"-shaped holes opening upward, the contact area between the bottom of the mounting hole and the blind rivet nut can be increased, so that the limiting effect of the mounting hole on the blind rivet nut is more stable, which is beneficial to avoiding misalignment between the blind rivet nut inserted in the mounting hole and the side plate.

[0021] By setting the angles between the side plates and the top plate and the bottom plate to be perpendicular to each other, the side plates can not only connect the top plate and the bottom plate into an integral structure, but also provide good support for the top plate and the bottom plate. When the bottom plate bears a vertical load due to the impact of the bottom guard plate of the battery pack or other situations, due to the support of the vertical side plate structure, it is not easy to deform, and it has better structural stability and mechanical strength.

[0022] By providing two side plates that are symmetrically distributed about the geometric centers of the top plate and the bottom plate, the side plates located on both sides of the top plate and the bottom plate can both limit their positions by installing rivet bolts. Compared with the method of installing rivet bolts on one side, the limit structure symmetrically arranged on both sides has better performance in improving the stability and mechanical strength of the support structure.

[0023] By installing the side plates at the edge positions of the top plate and the bottom plate, the side plates can form a frame structure without convex parts with the top plate and the bottom plate. While ensuring the strength of the support structure of the side plates for the top plate and the bottom plate, the overall structure composed of the top plate, the side plates and the bottom plate is not easy to interfere and collide with the middle beam or side beam of the battery pack when being assembled into the battery pack, further improving the convenience of the installation and disassembly process of the battery management module bracket.

[0024] Secondly, by opening a relief groove on the top plate, the process of assembling the battery management module bracket on the rivet nut becomes more convenient. The staff can slide the rivet nut from the relief groove into the bottom of the installation hole by sliding the battery management module bracket, which simplifies the positioning operation and achieves the invention purpose of simplifying the installation and disassembly process of the battery management module bracket.

[0025] Furthermore, by providing rib plates vertically connected between the top plate and the bottom plate, the rib plates can cooperate with the side plates to provide support and limitation for the top plate and the bottom plate. When the bottom guard plate of the battery pack bears a vertical load such as impact, due to the support of the rib plates, it is not easy for the top plate and the bottom plate to deform and be displaced, thus achieving the effect of improving the mechanical strength and structural stability of the battery management module bracket. By providing a plurality of rib plates equidistantly distributed along the length direction of the top plate, the bearing capacity at each position in the length direction of the top plate and the bottom plate is improved.

[0026] By opening a relief hole at a position on the bottom plate close to the installation hole, the rotating end of the power tool can enter the space between the top plate and the bottom plate to install or disassemble the rivet nut. The setting of the relief hole provides convenience for the staff to install or disassemble the rivet nut with a power tool, achieving the effect of simplifying the installation and disassembly process of the battery management module bracket.

[0027] In addition, the present utility model also proposes a battery pack provided with the above-mentioned battery management module bracket.

[0028] The battery pack described in the present utility model has the same beneficial effects as the battery management module bracket described above compared to the prior art, and will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings forming a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation of the present utility model. In the drawings:

[0030] Figure 1 It is a schematic structural diagram of the battery management module bracket in the embodiment of the present utility model.

[0031] Description of the reference numerals in the drawings:

[0032] 1. Top plate; 101. Relief groove;

[0033] 2. Bottom plate; 201. Relief hole;

[0034] 3. Side plate; 301. Mounting hole;

[0035] 4. Rib plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other. In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the specific embodiments of the present utility model will be described below with reference to the drawings. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings and other embodiments can be obtained.

[0037] In the description of the present utility model, it should be noted that if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer", etc. appear, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, if terms such as "first", "second", etc. appear, they are also only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0038] Taking a battery management module bracket and a battery pack described in the present utility model as an example, the orientation terms such as "upper, lower, left, right, front, and back" used in the embodiments are defined based on the up-down direction (also known as the height direction, or the Z direction of the battery pack), the left-right direction (also known as the width direction, or the Y direction of the battery pack), and the front-back direction (also known as the length direction, or the X direction of the battery pack) of the battery pack. "Inside and outside" are defined based on the contour of the corresponding component. For example, "inside" and "outside" defined based on the contour of the battery pack, the side closer to the middle of the battery pack is "inside", and vice versa is "outside".

[0039] In addition, in the description of the present utility model, unless otherwise clearly defined, the terms "installation", "connection", "connection", and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood in combination with specific situations.

[0040] The following will refer to the attached Figure 1 and combine with embodiments to detail the present utility model.

[0041] Embodiment 1

[0042] This embodiment relates to a battery management module bracket. By setting a bracket fixed with rivet bolts between the bottom guard plate of the battery pack, the side beams and the middle beam of the battery pack, it replaces the scheme in the prior art of directly welding the battery control module to the middle beam or side beam of the battery pack. Compared with the welding method, the battery management module bracket fixed with rivet bolts has obvious advantages in terms of the convenience of installation and disassembly. In addition, the battery management module bracket is respectively connected to the side beam and the middle beam of the battery pack and abuts against the bottom guard plate of the battery pack, improving the stiffness of the bottom guard plate of the battery pack and being beneficial to reducing the impact on the battery management module after the bottom guard plate of the battery pack is hit.

[0043] In terms of the overall structure, the bracket of the battery management module in this embodiment includes a top plate 1, a bottom plate 2, and a side plate 3. Among them, the top plate 1 can be a rectangular metal plate made of aluminum alloy. The upper surface of the top plate 1 abuts against the bottom of the battery management module, thus becoming the support structure of the battery management module and forming a support for the battery management module. The bottom plate 2 can be a rectangular metal plate made of aluminum alloy. The shape of the bottom plate 2 can be the same as that of the top plate 1. The lower surface of the bottom plate 2 abuts against the bottom guard plate of the battery pack. The side plate 3 is made of the same material as the top plate 1 and the bottom plate 2, and is connected between the top plate 1 and the bottom plate 2 to fix the top plate 1 and the bottom plate 2 into a whole. An installation hole 301 is provided on the side plate 3. The installation hole 301 can be a through hole provided along the thickness direction of the side plate 3. The installation hole 301 is used for the limit of the rivet nut of the battery pack.

[0044] With the above settings, by arranging a bracket structure composed of the top plate 1, the bottom plate 2, and the side plate 3 between the battery management module and the bottom guard plate of the battery pack, the support and limit of the battery management module can be formed. Among them, the top plate 1 abutting against the battery management module and the bottom plate 2 abutting against the bottom guard plate of the battery pack can become a whole under the connection action of the side plate 3, thereby playing a role in improving the stiffness of the bottom guard plate of the battery pack and avoiding the impact on the battery management module caused by the bottom guard plate of the battery pack being impacted to a certain extent. The installation hole 301 provided on the side plate 3 reserves a position for the limit installation of the rivet nut. Compared with the welding method used in the prior art, the method of fixed installation using the rivet nut has advantages in terms of easy installation and disassembly, thus achieving the invention purpose of reducing the disassembly difficulty.

[0045] Based on the above design concept, specifically, in this embodiment, referring to Figure 1 , the installation hole 301 opened on the side plate 3 is configured as a "U"-shaped hole with an upward opening. The opening size of the installation hole 301 is determined by the outer diameter of the rivet nut. The U-shaped part at the bottom of the installation hole 301 is tangent to the outer circle of the rivet nut. There is a safety gap between the two parallel side walls of the installation hole 301 and the outer circle of the rivet nut. The width of the safety gap is 1 mm.

[0046] By setting the installation hole 301 as a "U"-shaped hole with an upward opening, the contact area between the bottom of the installation hole 301 and the rivet nut can be increased, so that the limiting effect of the installation hole 301 on the rivet nut is more stable, which is beneficial to avoiding the dislocation between the rivet nut inserted in the installation hole 301 and the side plate 3.

[0047] Referring to Figure 1, for the purpose of further improving the stability and mechanical strength of the support structure, in this embodiment, the side plate 3 is perpendicularly arranged with respect to the top plate 1 and the bottom plate 2. Both the top plate 1 and the bottom plate 2 are arranged along a direction parallel to the horizontal plane, and the side plate 3 is arranged along a direction perpendicular to the horizontal plane and is located between the top plate 1 and the bottom plate 2.

[0048] By setting the angles between the side plate 3 and the top plate 1 and the bottom plate 2 to be perpendicular to each other, while the side plate 3 realizes connecting the top plate 1 and the bottom plate 2 into an integral structure, it forms a good support for the top plate 1 and the bottom plate 2. When the bottom plate 2 bears a load in the vertical direction due to the impact of the battery pack bottom guard plate or other situations, due to the support of the perpendicular side plate 3 structure, it is not easy to deform, and has better structural stability and mechanical strength.

[0049] Refer to Figure 1 , in order to further improve the stability and mechanical strength of the support structure, in this embodiment, the side plate 3 is constructed as two symmetrically distributed about the geometric centers of the top plate 1 and the bottom plate 2. The projections of the top plate 1 and the bottom plate 2 on the horizontal plane coincide. The number of the side plates 3 is two, and the upper and lower edges of the side plate 3 are respectively connected to the lower surface and the upper surface of the top plate 1. The two side plates 3 are symmetrically arranged about the geometric centers of the top plate 1 and the bottom plate 2.

[0050] By setting the side plate 3 as two symmetrically distributed about the geometric centers of the top plate 1 and the bottom plate 2, the side plates 3 located on both sides of the top plate 1 and the bottom plate 2 can both limit their positions by installing rivet bolts. Compared with the way of installing rivet bolts on one side, the limit structure symmetrically arranged on both sides has a better performance in improving the stability and mechanical strength of the support structure.

[0051] Refer to Figure 1 , in order to further improve the convenience of the installation and disassembly process of the battery management module bracket, in this embodiment, the side plate 3 is installed at the edge positions of the top plate 1 and the bottom plate 2. The top edge of the side plate 3 is connected to the edge of one end of the lower surface of the top plate 1, and the bottom edge of the side plate 3 is connected to the edge of one end of the upper surface of the bottom plate 2. The side plate 3 and the top plate 1 and the bottom plate 2 form a frame structure without convex parts.

[0052] By installing the side plate 3 at the edge positions of the top plate 1 and the bottom plate 2, the side plate 3 can form a frame structure without convex parts with the top plate 1 and the bottom plate 2. While ensuring the support structure strength of the side plate 3 for the top plate 1 and the bottom plate 2, the overall structure composed of the top plate 1, the side plate 3 and the bottom plate 2 is not easy to interfere and collide with the middle beam or side beam of the battery pack when being assembled into the battery pack, further improving the convenience of the installation and disassembly process of the battery management module bracket.

[0053] Refer to Figure 1, for the purpose of simplifying the installation and disassembly process of the battery management module bracket, in this embodiment, a relief groove 101 is formed on the top plate 1. The relief groove 101 is formed at the intersection of the side plate 3 and the top plate 1. The number of the relief grooves 101 is the same as that of the side plates 3. The formation of the relief groove 101 avoids interference between the upper surface of the top plate 1 and the flange surface of the rivet nut, enabling the rivet nut to slide from the top to the bottom of the mounting hole 301. There is a gap of at least 0.5 mm between the side wall of the relief groove 101 and the flange surface of the rivet nut.

[0054] By forming the relief groove 101 on the top plate 1, the process of assembling the battery management module bracket onto the rivet nut becomes more convenient. Workers can slide the rivet nut into the bottom of the mounting hole 301 from the relief groove 101 by sliding the battery management module bracket, simplifying the positioning operation and achieving the inventive purpose of simplifying the installation and disassembly process of the battery management module bracket.

[0055] Refer to Figure 1 , in order to improve the mechanical strength and structural stability of the battery management module bracket and reduce the impact of the battery pack bottom guard plate on the battery management module, in this embodiment, a rib plate 4 is vertically connected between the top plate 1 and the bottom plate 2. The number of the rib plates 4 is set to one or more. In this embodiment, the number of the rib plates 4 is two. The rib plates 4 are evenly distributed at equal intervals along the length direction of the top plate 1.

[0056] By providing the vertically connected rib plate 4 between the top plate 1 and the bottom plate 2, the rib plate 4 can cooperate with the side plate 3 to provide support and limit for the top plate 1 and the bottom plate 2. When the battery pack bottom guard plate bears vertical loads such as impacts, due to the support of the rib plate 4, it is not easy for the top plate 1 and the bottom plate 2 to deform and displace, thus achieving the effect of improving the mechanical strength and structural stability of the battery management module bracket. By arranging the rib plates 4 as multiple equally spaced along the length direction of the top plate 1, the bearing capacity at each position in the length direction of the top plate 1 and the bottom plate 2 is improved.

[0057] Refer to Figure 1 , for the purpose of simplifying the installation and disassembly process of the battery management module bracket, in this embodiment, a relief hole 201 is formed on the bottom plate 2. The number of the relief holes 201 formed is the same as that of the side plates 3. The relief hole 201 is formed at one end of the bottom plate 2 close to the mounting hole 301 on the side plate 3. The relief hole 201 can be a "U"-shaped hole with an opening pointing to the mounting hole 301.

[0058] By providing a relief hole 201 at a position on the bottom plate 2 close to the mounting hole 301, it is convenient for the rotating end of the power tool to enter the space between the top plate 1 and the bottom plate 2, so as to install or disassemble the rivet nut. The setting of the relief hole 201 provides convenience for the staff to install or disassemble the rivet nut using a power tool, achieving the effect of simplifying the installation and disassembly process of the battery management module bracket.

[0059] Embodiment 2

[0060] This embodiment relates to a battery pack, including the battery management module bracket described in Embodiment 1.

[0061] In this embodiment, by adopting the battery management module bracket in Embodiment 1 in the battery pack, the way of installing the battery management module on the battery pack is changed from being welded between the middle beam and the side beam of the battery pack in the prior art to being detachably fixed between the middle beam and the side beam of the battery pack through riveting bolts. In addition to having advantages in terms of loading and unloading convenience, the battery management module bracket plays a supporting role for the bottom guard plate of the battery pack, improving the stiffness of the bottom guard plate of the battery pack and making the impact on the battery management module caused by the bottom guard plate of the battery pack being hit smaller.

[0062] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not restrictive. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A battery management module bracket for supporting a battery management module on a bottom protection plate of a battery pack, characterized in that: It includes a top plate, the upper surface of which abuts against the bottom of the battery management module to form support for the battery management module; A bottom plate, the lower surface of which abuts against the bottom protection plate of the battery pack; Side plates connected between the top plate and the bottom plate, and mounting holes for limiting rivet nuts are provided on the side plates.

2. The battery management module bracket according to claim 1, characterized in that: The mounting hole is configured as a "U"-shaped hole opening upward.

3. The battery management module bracket according to claim 1, characterized in that: The side plates are respectively perpendicular to the top plate and the bottom plate.

4. The battery management module bracket according to claim 1, characterized in that: The side plates are configured as two symmetrically distributed about the geometric centers of the top plate and the bottom plate.

5. The battery management module bracket according to claim 1, characterized in that: The side plates are connected to the edge positions of the top plate and the bottom plate.

6. The battery management module bracket according to claim 1, characterized in that: A relief groove is provided at the intersection of the top plate and the side plates, and the rivet nut can slide vertically into the mounting hole due to the provision of the relief groove.

7. The battery management module bracket according to claim 1, characterized in that: It further includes rib plates perpendicularly connected between the top plate and the bottom plate.

8. The battery management module bracket according to claim 7, characterized in that: The rib plates are configured as one provided between the two side plates or multiple ones equidistantly distributed along the length direction of the top plate.

9. The battery management module bracket according to claim 1, characterized in that: A relief hole is provided on the bottom plate, and the relief hole is provided at the end of the bottom plate close to the mounting hole.

10. A battery pack, characterized in that: It includes the battery management module bracket according to any one of claims 1 to 9.

Images