BMS support and battery pack

Abstract

The utility model provides a BMS (battery management system) support and a battery pack, and the BMS support comprises a supporting plate and a hanging plate, the supporting plate comprises a supporting plate body, at least one first convex rib and at least one second convex rib, the supporting plate body is used for installing the BMS, and the first convex rib and the second convex rib are perpendicular to each other and are both located on the back side of the face, where the BMS is installed, of the supporting plate body; the hanging plate is connected with the top edge of the supporting plate body, located in the middle of the supporting plate body in the length direction and used for being hung in a battery box. The first convex rib and the second convex rib are perpendicular to each other and are located on the back side of the face, where the BMS is installed, of the supporting plate body, so that the bending resistance, torsion resistance and high-cycle fatigue resistance of the BMS support are improved, meanwhile, BMS installation of the supporting plate body is not affected, and reliability and stability are improved; and the BMS bracket is hung in the battery box through the hanging plate connected with the top edge of the supporting plate body, so that the mounting is more convenient.

Description

Technical Field

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

[0002] With the development of the electric vehicle industry, the new energy vehicle technology with three core technologies of power electrification, lightweight structure and vehicle intelligence is developing in depth. The existing battery pack generally includes battery module, BMS (Battery Management System), connector, etc. Due to the different number of batteries in the battery module of the existing power battery pack, the BMS size specifications used in each battery pack may also be different, making the BMS mounting bracket a special part, resulting in increased costs.

[0003] The BMS bracket is generally connected to the bottom support bracket by welding or screwing without any other direct support. Therefore, the BMS bracket is subjected to relatively severe mechanical forces longitudinally when it is impacted or jumps upward.

[0004] The existing BMS bracket has a flat structure, which results in low stiffness and strength, large deformation, and will cause high-cycle fatigue damage in the long run. Utility Model Content

[0005] In view of this, the utility model proposes a BMS bracket and a battery pack to solve the technical problem proposed in the above background technology that the flat structure of the BMS bracket leads to low stiffness and strength, large deformation, and high-cycle fatigue damage in the long run.

[0006] The technical solution of the utility model is achieved in this way:

[0007] In a first aspect, the utility model provides a BMS bracket, including a support plate and a mounting plate, wherein:

[0008] The support plate includes a support plate body, at least one first convex rib and at least one second convex rib, the support plate body is used to install the BMS, the first convex rib and the second convex rib are perpendicular to each other and are both located on the back side of the surface of the support plate body on which the BMS is installed;

[0009] The mounting plate is connected to the top edge of the support plate body and is located in the middle of the length direction of the support plate body, and is used for mounting in the battery box.

[0010] On the basis of the above technical solution, preferably, the mounting plate includes a connecting portion and a mounting portion, the connecting portion is connected to the long side of the support plate body and is located in the same plane as the support plate body, the mounting portion is perpendicular to the connecting portion and is located on the same side as the first rib, and the mounting portion is provided with a mounting hole for connecting to a battery box.

[0011] On the basis of the above technical solution, preferably, at least one heat dissipation hole is further provided on the support plate body, and the heat dissipation hole is located in an area of ​​the support plate body excluding the first convex rib and the second convex rib.

[0012] On the basis of the above technical solution, preferably, the support plate body is provided with four mounting holes for mounting the BMS, and the four mounting holes are located at the four corners of the rectangle.

[0013] On the basis of the above technical solution, preferably, the support plate body is provided with a widened portion in the width direction of the location of the mounting hole.

[0014] On the basis of the above technical solution, preferably, it also includes a reinforcement plate, which is connected to one end of the support plate body away from the mounting plate, and the reinforcement plate is used to be connected to the bottom of the battery box.

[0015] On the basis of the above technical solution, preferably, two reinforcement plates are provided, and the two reinforcement plates are respectively connected to the two widened portions.

[0016] On the basis of the above technical solution, preferably, a first reinforcing rib is provided at a connection between the hanging portion and the connecting portion, and a second reinforcing rib is provided at a connection between the reinforcing plate and the widened portion.

[0017] On the basis of the above technical solution, preferably, the support plate body is provided with a first folded edge and a second folded edge at both ends along the length direction, respectively, and the first folded edge and the second folded edge are located on one side of the surface of the support plate body on which the BMS is installed.

[0018] On the basis of the above technical solution, preferably, a first rounded corner is provided at the transition between the first rib and the support plate body, a second rounded corner is provided at the transition between the second rib and the support plate body, and a third rounded corner is provided at the intersection of the first rib and the second rib.

[0019] In a second aspect, the utility model further proposes a battery pack, comprising the BMS bracket described in the first aspect.

[0020] The BMS bracket of the utility model has the following beneficial effects compared with the prior art:

[0021] (1) The first convex rib and the second convex rib are perpendicular to each other and are both located on the back side of the surface of the support plate body on which the BMS is installed, thereby improving the rigidity and structural strength of the bracket, and improving the bending, torsion and high-cycle fatigue resistance of the BMS bracket. At the same time, the installation of the BMS on the support plate body is not affected, the reliability and stability of the device are improved, and high-cycle fatigue damage to the BMS bracket is avoided, which significantly improves the safety of the BMS; and the BMS bracket is mounted in the battery box through a mounting plate connected to the top edge of the support plate body, which is more convenient to install;

[0022] (2) The connecting portion is connected to the long side of the support plate body and is located in the same plane as the support plate body. The mounting portion is perpendicular to the connecting portion and is located on the same side as the first convex rib, which facilitates the installation of the mounting portion without affecting the wiring of the BMS, thereby improving the reliability and stability of the device. The mounting hole is connected to the battery box to achieve the installation of the BMS bracket and the battery box;

[0023] (3) By further providing at least one heat dissipation hole on the support plate body, the BMS bracket can be made lighter while enhancing the heat dissipation of the BMS. The heat dissipation hole is located in the area of ​​the support plate body other than the first convex rib and the second convex rib. While satisfying the heat dissipation function, it does not affect the role of the first convex rib and the second convex rib in increasing strength, thereby improving the reliability of the device;

[0024] (4) The support plate body is provided with a widened portion in the width direction of the location where the mounting hole is located, thereby avoiding stress concentration in the width direction of the location where the mounting hole is located, thereby improving the reliability and stability of the device;

[0025] (5) The reinforcing plate is connected to one end of the support plate body away from the mounting plate, and the reinforcing plate is used to connect to the bottom of the battery box, so that the connection between the BMS bracket and the battery box is more secure, avoiding the up and down jumping of the BMS bracket, and improving the reliability and stability of the device;

[0026] (6) A first reinforcing rib is provided at the connection between the hanging portion and the connecting portion, and a second reinforcing rib is provided at the connection between the reinforcing plate and the widened portion, so as to increase the strength of the connection, eliminate stress concentration at the connection, and improve the reliability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 The three-dimensional structure of the BMS bracket of the utility model Figure 1 ;

[0029] Figure 2 The three-dimensional structure of the BMS bracket of the utility model Figure 2 ;

[0030] Figure 3 This is a three-dimensional diagram of the BMS bracket of the utility model after the BMS is installed.

[0031] Description of reference numerals: 1-support plate, 2-mounting plate, 3-reinforcement plate;

[0032] 100-BMS;

[0033] 11-support plate body, 111-heat dissipation hole, 112-mounting hole, 113-widening portion, 12-first convex rib, 13-second convex rib, 14-first folded edge, 15-second folded edge;

[0034] 21-connecting portion, 22-hanging portion, 221-hanging hole, 23-first reinforcing rib;

[0035] 31-reinforcement hole, 32-second reinforcement rib. DETAILED DESCRIPTION

[0036] The following will be combined with the implementation of the utility model to clearly and completely describe the technical solutions in the implementation of the utility model. Obviously, the described implementation is only a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] Reference Figure 1-Figure 3 As shown, the first embodiment of the utility model provides a BMS bracket, including a support plate 1 and a mounting plate 2, wherein:

[0038] The support plate 1 includes a support plate body 11, at least one first convex rib 12 and at least one second convex rib 13. The support plate body 11 is used to install the BMS 100. The first convex rib 12 and the second convex rib 13 are perpendicular to each other and are both located on the back side of the surface of the support plate body 11 on which the BMS 100 is installed.

[0039] In specific examples, such as Figure 1 As shown, there are two first convex ribs 12 and three second convex ribs 13. The first convex ribs 12 are arranged along the length direction of the support plate body 11, and the second convex ribs 13 are arranged along the width direction of the support plate body 11;

[0040] The mounting plate 2 is connected to the top edge of the support plate body 11 and is located in the middle of the length direction of the support plate body 11 for mounting in the battery box.

[0041] The BMS bracket proposed in this embodiment has the first convex rib 12 and the second convex rib 13 perpendicular to each other and are both located on the back side of the surface of the support plate body 11 on which the BMS100 is installed, thereby improving the rigidity and structural strength of the bracket, and improving the bending, torsion and high-cycle fatigue resistance of the BMS bracket. At the same time, it does not affect the installation of the BMS100 on the support plate body 11, improves the reliability and stability of the device, avoids high-cycle fatigue damage to the BMS bracket, and significantly improves the safety of the BMS100; and the BMS bracket is mounted in the battery box through the mounting plate 2 connected to the top edge of the support plate body 11, which is more convenient to install.

[0042] In some embodiments, the mounting plate 2 includes a connection portion 21 and a mounting portion 22, wherein the connection portion 21 is connected to the long side of the support plate body 11 and is located in the same plane as the support plate body 11, the mounting portion 22 is perpendicular to the connection portion 21 and is located on the same side as the first convex rib 12, and the mounting portion 22 is provided with a mounting hole 221 for connecting with the battery box. The connection portion 21 is connected to the long side of the support plate body 11 and is located in the same plane as the support plate body 11, and the mounting portion 22 is perpendicular to the connection portion 21 and is located on the same side as the first convex rib 12, so that the mounting portion 22 is convenient for installation without affecting the wiring of the BMS 100, thereby improving the reliability and stability of the device, and the mounting hole 221 is connected to the battery box to achieve the installation of the BMS bracket and the battery box.

[0043] In some embodiments, at least one heat dissipation hole 111 is further provided on the support plate body 11, and the heat dissipation hole 111 is located in the area of ​​the support plate body 11 excluding the first convex rib 12 and the second convex rib 13. By providing at least one heat dissipation hole 111 on the support plate body 11, the heat dissipation of the BMS 100 can be enhanced while making the BMS bracket lighter. The heat dissipation hole 111 is located in the area of ​​the support plate body 11 excluding the first convex rib 12 and the second convex rib 13. While satisfying the heat dissipation function, it does not affect the role of the first convex rib 12 and the second convex rib 13 in increasing strength, thereby improving the reliability of the device. In this embodiment, Figure 1As shown, there are four heat dissipation holes 111, which are arranged along the length direction of the support plate body 11 and are located in the blank area outside the first convex rib 12 and the second convex rib 13. The shape of the heat dissipation holes 111 can be rectangular. Of course, the number of heat dissipation holes 111 can be set as needed, and the shape can also be triangular, circular, and polygonal, as long as the total area of ​​the heat dissipation holes 111 meets the heat dissipation requirements.

[0044] In some embodiments, the support plate body 11 is provided with four mounting holes 112 for mounting the BMS 100, and the four mounting holes 112 are located at the four corners of the rectangle. The BMS 100 is connected to the BMS 100 through the four mounting holes 112 to achieve the installation of the BMS 100 on the BMS bracket, and the long side of the rectangle where the four mounting holes 112 are located is parallel to the length direction of the support plate body 11, and the short side is parallel to the width direction of the support plate body 11.

[0045] In some embodiments, stress concentration is prone to occur at the surface where the mounting hole 112 is located, especially in the width direction. Therefore, in order to address the above problem, in this embodiment, the support plate body 11 is provided with a widened portion 113 in the width direction of the mounting hole 112 to avoid stress concentration in the width direction of the mounting hole 112 and improve the reliability and stability of the device.

[0046] In some embodiments, the BMS bracket further includes a reinforcing plate 3, the reinforcing plate 3 is connected to one end of the support plate body 11 away from the mounting plate 2, the reinforcing plate 3 is used to connect to the bottom of the battery box, the reinforcing plate 3 is provided with a reinforcing hole 31, the reinforcing plate 3 is perpendicular to the support plate body 11, and is located on one side of the surface of the support plate body 11 on which the BMS 100 is mounted. The reinforcing plate 3 is connected to one end of the support plate body 11 away from the mounting plate 2, and the reinforcing plate 3 is used to connect to the bottom of the battery box, so that the connection between the BMS bracket and the battery box is more firmly established, the BMS bracket is prevented from jumping up and down, and the reliability and stability of the device are improved.

[0047] In some embodiments, two reinforcing plates 3 are provided, and the two reinforcing plates 3 are respectively connected to the two widened portions 113. By connecting the two reinforcing plates 3 to the two widened portions 113, the reinforcing plates 3 and the widened portions 113 bear the force together, thereby improving the reliability and stability of the device, making the structure simpler, and reducing the weight of the BMS bracket.

[0048] In some embodiments, a first reinforcing rib 23 is provided at the connection between the hanging portion 22 and the connecting portion 21, and a second reinforcing rib 32 is provided at the connection between the reinforcing plate 3 and the widening portion 113. The first reinforcing rib 23 can increase the strength of the connection between the hanging portion 22 and the connecting portion 21, and the second reinforcing rib 32 can increase the strength of the connection between the reinforcing plate 3 and the widening portion 113, thereby eliminating stress concentration at the connection and improving the reliability of the device. The first reinforcing rib 23 and the second reinforcing rib 32 can be convex or concave.

[0049] In some embodiments, the first folded edge 14 and the second folded edge 15 are respectively provided at both ends of the support plate body 11 along the length direction, and the first folded edge 14 and the second folded edge 15 are located on one side of the surface of the support plate body 11 on which the BMS 100 is installed. By providing the first folded edge 14 and the second folded edge 15 at both ends of the support plate body 11 along the length direction, the torsional strength of the support plate 1 can be improved; the first folded edge 14 and the second folded edge 15 are located on one side of the surface of the support plate body 11 on which the BMS 100 is installed, and while improving the strength, the BMS 100 can be protected to a certain extent, thereby improving the reliability of the device.

[0050] In some embodiments, a first fillet is provided at the transition between the first rib 12 and the support plate body 11, a second fillet is provided at the transition between the second rib 13 and the support plate body 11, and a third fillet is provided at the intersection of the first rib 12 and the second rib 13. By providing the first fillet, the second fillet and the third fillet, the transition is smooth, stress concentration is avoided at the transition, the reliability and stability of the device are improved, and the BMS bracket can be made more beautiful.

[0051] The working principle of the BMS bracket is as follows: the BMS bracket is connected to the battery box through the hanging hole 221 on the hanging part 22 to realize the hanging of the BMS bracket, and is connected to the bottom of the battery box through the reinforcement plate 3 to improve the connection firmness of the BMS bracket; the first convex rib 12 and the second convex rib 13 are perpendicular to each other and are both located on the back side of the surface of the support plate body 11 on which the BMS100 is installed, thereby improving the rigidity and structural strength of the bracket, and improving the bending, torsion and high-cycle fatigue resistance of the BMS bracket, while not affecting the installation of the BMS100 on the support plate body 11, thereby improving the reliability and stability of the device, avoiding high-cycle fatigue damage to the BMS bracket, and significantly improving the safety of the BMS100.

[0052] A second embodiment of the present invention provides a battery pack, comprising the BMS bracket described in the first embodiment, wherein the mounting plate 2 of the BMS bracket is mounted on a battery box.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A BMS bracket, characterized in that: It includes a support plate and a mounting plate, wherein: The support plate includes a support plate body, at least one first convex rib and at least one second convex rib, the support plate body is used to install the BMS, the first convex rib and the second convex rib are perpendicular to each other and are both located on the back side of the surface of the support plate body on which the BMS is installed; The mounting plate is connected to the top edge of the support plate body and is located in the middle of the length direction of the support plate body, and is used for mounting in the battery box.

2. The BMS bracket according to claim 1, characterized in that: The mounting plate includes a connecting portion and a mounting portion, wherein the connecting portion is connected to the long side of the support plate body and is located in the same plane as the support plate body, the mounting portion is perpendicular to the connecting portion and is located on the same side as the first rib, and the mounting portion is provided with a mounting hole for connecting to a battery box.

3. The BMS bracket according to claim 2, characterized in that: The support plate body is also provided with at least one heat dissipation hole, and the heat dissipation hole is located in a region of the support plate body excluding the first convex rib and the second convex rib.

4. The BMS bracket according to claim 3, characterized in that: The support plate body is provided with four mounting holes for mounting the BMS, and the four mounting holes are located at the four corners of a rectangle.

5. The BMS bracket according to claim 4, characterized in that: The support plate body is provided with a widened portion in the width direction of the position where the mounting hole is located.

6. The BMS bracket according to claim 5, characterized in that: It also includes a reinforcing plate, which is connected to one end of the supporting plate body away from the mounting plate.

7. The BMS support according to claim 6, characterized in that: The reinforcement plates are provided with two, and the two reinforcement plates are respectively connected to the two widened portions, and the reinforcement plates are used to be connected to the bottom of the battery box.

8. The BMS support according to claim 7, characterized in that: A first reinforcing rib is provided at a connection between the hanging portion and the connecting portion, and a second reinforcing rib is provided at a connection between the reinforcing plate and the widened portion.

9. The BMS support according to claim 8, characterized in that: The support plate body is provided with a first folded edge and a second folded edge at both ends along the length direction, respectively. The first folded edge and the second folded edge are located on one side of the surface of the support plate body on which the BMS is installed.

10. A battery pack, characterized in that: Comprising a BMS bracket as described in any one of claims 1-9.

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