CN219739149U - BMS installing support and power battery package and energy memory - Google Patents

Abstract

The utility model provides a BMS mounting bracket, a power battery pack and an energy storage device. The BMS mounting bracket of the utility model includes a bracket body, a first mounting arm and a second mounting arm. The bracket body is composed of multiple beam bodies. , and has a rectangular main body part and a triangular side part, the first mounting arm is connected to the main body part, the second mounting arm is connected to the side part, and the first mounting arm, the second mounting arm and Each beam body is made of aluminum profiles. The BMS mounting bracket of the present utility model arranges the first mounting arm and the second mounting arm at both ends of the bracket body, so that the entire mounting bracket is in the shape of a gate and has a better supporting effect; the bracket body has a rectangular main part and The triangular side part can ensure the support effect of the BMS; in addition, the first and second mounting arms and each beam body are made of aluminum profiles, which can help ensure its own structural strength and reduce processing costs.

Description

BMS mounting bracket, power battery pack and energy storage device

Technical field

The utility model relates to the technical field of battery packs, and in particular to a BMS mounting bracket. The utility model also relates to a power battery pack including the BMS mounting bracket. In addition, the utility model also relates to an energy storage device including the power battery pack.

Background technique

Due to the worldwide energy and environmental problems caused by the automobile industry, the development of new energy vehicles has become an urgent task in today's world. New energy vehicles are an effective way to solve the energy and environmental problems faced by automobile transportation. Currently in the field of passenger cars, various car companies have strict size requirements for on-board battery packs. The main parts in the battery pack are battery modules, which occupy at least 70% of the space in the pack, resulting in electrical components such as BMS (battery management system). The installation space inside the battery pack is extremely limited. As an intelligent control system for power batteries, BMS is an indispensable part of the three core components of electric vehicles. Different vehicle battery solutions correspond to different control system requirements, which also increase the development requirements for the number of different types of BMS parts, especially the one-master-multi-slave BMS design.

In the existing technology, the design of the BMS bracket generally adopts an integrated sheet metal structure, so that the BMS mounting bracket as a whole has high strength and has a good supporting effect. However, the overall weight of the sheet metal structure is relatively heavy. During the processing and manufacturing process, the cost of using equipment is high, and the weight of the finished product is large, which may cause stress concentration at the legs of the bracket, causing the bracket to fail.

Utility model content

In view of this, the present utility model aims to propose a BMS mounting bracket to have better strength and achieve an overall lightweight design.

In order to achieve the above purpose, the technical solution of the present invention is achieved as follows:

A BMS mounting bracket includes a bracket body arranged laterally, and a first mounting arm and a second mounting arm arranged longitudinally, and the first mounting arm and the second mounting arm are correspondingly arranged on both sides of the bracket body. end;

The main body of the bracket is composed of a plurality of beams connected together, and has a rectangular main body part, and a triangular side part connected to one end of the main body part, and at least the main body part is provided with a BMS Installation Department;

The first mounting arm is connected to the main body part, the second mounting arm is connected to the side part, and the first mounting arm, the second mounting arm and each of the beams are all made of aluminum. Made of profiles.

Further, the main body part includes two cross beams arranged side by side, and two first longitudinal beams located between the two cross beams;

The two first longitudinal beams are spaced apart along the extension direction of the cross beam, and the two ends of the first longitudinal beam are respectively connected to the ends of the two cross beams, and the first mounting arm is provided on one of the first longitudinal beams. The end of the first longitudinal beam.

Furthermore, the first mounting arm is integrally formed with one of the first longitudinal beams, and a groove is provided on the first mounting arm, and the copper bar in the battery pack can pass through the groove.

Further, the main body part is provided with a plurality of second longitudinal beams, the plurality of second longitudinal beams are provided between the two first longitudinal beams, and the plurality of second longitudinal beams are arranged along the The extension direction of the cross beams is set at intervals;

One end of the second longitudinal beam is connected to one of the cross beams, and an avoidance space is formed between the other end of the second longitudinal beam and the other cross beam. The avoidance space is used to avoid the copper bar. .

Further, a wire harness mounting bracket is provided on one of the cross beams, and the wire harness mounting bracket is used to fix the wire harness of the BMS;

And/or, the first mounting arm is provided with a copper bar fixing bracket, and the copper bar fixing bracket is used to fix the copper bar.

Further, the side part includes a first connecting arm and a second connecting arm, both of the first connecting arm and the second connecting arm are connected to the same first longitudinal beam, and the first connecting arm The arm is connected to the second connecting arm, and the second mounting arm is provided at the connecting portion of the first connecting arm and the second connecting arm.

Further, a plurality of reinforcing ribs are provided in the first mounting arm and the second mounting arm, and the plurality of reinforcing ribs are arranged at intervals along the longitudinal direction, and connect the first mounting arm and the second mounting arm. The arms are separated to form multiple cavities.

Compared with the existing technology, this utility model has the following advantages:

The BMS mounting bracket of the present utility model arranges the first mounting arm and the second mounting arm at both ends of the bracket body, so that the entire mounting bracket can be made into a portal shape to have a better supporting effect; at the same time, the bracket The main body is composed of multiple beams, and has a rectangular main part and a triangular side part, which can ensure the support effect for the BMS, and the side part can facilitate the arrangement of the avoidance shell structure; in addition, the first mounting arm and The second mounting arm and each beam body are made of aluminum profiles, which can help ensure their own structural strength and reduce processing costs.

In addition, the ends of the two cross beams and the two first longitudinal beams in the main part are connected to form a rectangular frame for supporting the BMS. Its structure is simple and easy to set up, and it has good structural strength. The first mounting arm and the first longitudinal beam are integrally formed, which can effectively ensure the connection strength between the first mounting arm and the first longitudinal beam. A second longitudinal beam is provided on the main part, which can further enhance the support effect of the BMS. A wiring harness mounting bracket is provided on the crossbeam to facilitate fixing the BMS wiring harness, and a copper bar fixing bracket is provided on the first mounting arm to facilitate fixing the copper bar in the battery pack.

In addition, the side part includes a first connecting arm and a second connecting arm. The first connecting arm and the second connecting arm form a triangle shape with the first longitudinal beam. The structure is simple and easy to design and process. A plurality of reinforcing ribs are provided in the first mounting arm and the second mounting arm, which can easily improve the structural strength of the first mounting arm and the second mounting arm, thereby improving the support effect for the BMS.

Another object of the present invention is to provide a power battery pack, which is provided with a BMS mounting bracket as described above.

Further, the power battery pack also includes a BMS module. The BMS module includes a BMS main control board and a plurality of BMS slave control boards. The BMS slave control boards are installed on the BMS mounting bracket. The BMS The main control board is located above the BMS slave control board.

Another object of the present invention is to provide an energy storage device, which includes the power battery pack as described above.

The energy storage device and power battery pack of the present invention have the same beneficial effects as the aforementioned BMS bracket compared with the existing technology, and will not be described again here.

Description of the drawings

The drawings that constitute 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 attached picture:

Figure 1 is a schematic diagram of the overall structure of the BMS mounting bracket according to the embodiment of the present utility model;

Figure 2 is a cross-sectional view of the beam according to the embodiment of the present utility model;

Figure 3 is a cross-sectional view of the second mounting arm according to the embodiment of the present utility model;

Figure 4 is a partial structural diagram of the power battery pack according to the embodiment of the present invention.

Explanation of reference symbols:

1. Main body of the bracket; 100. Main part; 101. Cross beam; 102. First longitudinal beam; 103. Second longitudinal beam; 1031. Avoidance space; 104. Side part; 1041. First connecting arm; 1042. Second connecting arm;

2. First mounting arm; 201. Groove;

3. Second mounting arm; 301. Reinforcement rib; 302. Cavity;

4. Rivet nut; 5. Copper bar fixing bracket; 6. Wiring harness installation bracket; 7. BMS main control board; 8. BMS slave control board; 801, mounting slot; 9. Bolts; 10. Battery pack shell; 11 , Shell longitudinal beam; 12. Support column.

Detailed ways

It should be noted that, as long as there is no conflict, the embodiments and features of the embodiments of the present invention can be combined with each other.

In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inside", "back", etc. are based on the orientation or positional relationship shown in the drawings, and are only In order to facilitate the description of the present invention and simplify the description, it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance.

In addition, in the description of the present invention, unless otherwise explicitly limited, 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 it can be an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be internal to two components. Connected. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood based on specific circumstances.

The utility model will be described in detail below with reference to the accompanying drawings and embodiments.

Embodiment 1

This embodiment relates to a BMS mounting bracket. The overall structure, as shown in Figure 1, includes a bracket body 1 arranged laterally, and a first mounting arm 2 and a second mounting arm 3 arranged longitudinally, and the first mounting arm 2 and the second mounting arm 3 are correspondingly arranged at both ends of the bracket body 1 .

Among them, the bracket main body 1 is composed of a plurality of beams connected together, and has a rectangular main body part 100, and a triangular side part 104 connected to one end of the main body part 100, and at least the main part 100 is provided with BMS Installation Department. The first mounting arm 2 is connected to the main body part 100, the second mounting arm 3 is connected to the side part 104, and the first mounting arm 2, the second mounting arm 3 and each beam body are made of aluminum profiles.

In the BMS mounting bracket of this embodiment, by arranging the first mounting arm 2 and the second mounting arm 3 at both ends of the bracket body 1, the entire mounting bracket can be easily made into a door shape to have a better supporting effect; at the same time, The bracket body 1 is composed of multiple beams, and has a rectangular main part 100 and a triangular side part 104, which can ensure the support effect for the BMS, and the side part 104 can facilitate the arrangement of the avoidance shell structure; in addition, The first mounting arm 2 and the second mounting arm 3 and each beam body are made of aluminum profiles, which can help ensure their own structural strength and reduce processing costs.

Based on the overall description of the above structure, an exemplary structure of the BMS mounting bracket of this embodiment is shown in Figures 1 and 4. The BMS mounting bracket is provided inside the battery pack case 10 and is integrally fixed to the battery pack case 10. On the inner shell longitudinal beam 11.

As a specific preferred embodiment, the above-mentioned main body part 100 includes two cross beams 101 arranged side by side, and two first longitudinal beams 102 provided between the two cross beams 101. Referring to what is shown in Figure 1, two first longitudinal beams 102 are spaced apart along the extension direction of the cross beam 101, and the two ends of the first longitudinal beam 102 are respectively connected to the ends of the two cross beams 101. The first mounting arm 2 is provided with The front end of the first longitudinal beam 102 on the right side is used to support the main body part 100. It can be understood that the first mounting arm 2 can also be disposed at the rear end of the first longitudinal beam 102 on the right side, or the first mounting arm 2 can be disposed at the middle position of the first longitudinal beam 102 on the right side, where There are no specific restrictions, and design and processing can be carried out according to actual conditions.

In addition, in order to improve the connection strength between the first mounting arm 2 and the first longitudinal beam 102 . In this embodiment, the first mounting arm 2 and the first longitudinal beam 102 on the right side are integrally formed to have better structural strength and achieve better support effect. Among them, it should be noted that the first mounting arm 2 is located close to the BDU structure in the battery pack case 10. In order to avoid copper bars on the BDU, in this embodiment, it is preferred to provide a There is a groove 201 through which the copper bars connected to the BDU in the battery pack case 10 can be arranged.

In addition, in order to increase the structural strength of the main body part 100, as a preferred embodiment, the main body part 100 is provided with a plurality of second longitudinal beams 103, and the plurality of second longitudinal beams 103 are provided between the two first longitudinal beams 102. space, and the plurality of second longitudinal beams 103 are arranged at intervals along the extension direction of the cross beam 101. Referring to what is shown in Figure 1, two second longitudinal beams 103 are simultaneously provided in the middle of the two cross beams 101, which can improve the structural strength at this location. It can be understood that in this embodiment, the number of the second longitudinal beams 103 is not specifically limited, and can be set according to actual conditions. At the same time, the installation position of the second longitudinal beam 103 is not specifically limited.

In addition, in order to avoid the aforementioned copper bars on the BDU, in this embodiment, as a preferred implementation, refer to the second longitudinal beam on the first longitudinal beam 102 close to the right side shown in FIG. 1 One end of the second longitudinal beam 103 is connected to the rear crossbeam 101. An avoidance space 1031 is formed between the front end of the second longitudinal beam 103 and the front crossbeam 101. The avoidance space 1031 is used to avoid the copper bar.

The size of the avoidance space 1031 can be set according to the size of the copper bar, and is not further limited here. In this embodiment, the avoidance space 1031 is formed between only one second longitudinal beam 103 and the front crossbeam 101. Multiple second longitudinal beams 103 and crossbeams can also be formed while ensuring the overall strength of the main body part 100. An avoidance space 1031 is formed between 101. Moreover, in this embodiment, it is not limited that the second longitudinal beam 103 can only form an avoidance space 1031 with the front crossbeam 101. The avoidance space 1031 can also be formed between the second longitudinal beam 103 and the rear crossbeam 101. Arrange according to actual situation.

In order to facilitate the fixation of the aforementioned copper bars. In this embodiment, a copper bar fixing bracket 5 is provided on the first mounting arm 2, and the extending direction of the copper bar fixing bracket 5 is the same as the extending direction of the cross beam 101, which can avoid interference with the copper bar.

In addition, in this embodiment, as a preferred implementation, with reference to FIG. 1 , a plurality of wire harness mounting brackets 6 are provided on the rear crossbeam 101. The wire harness mounting brackets 6 are used to fix the wire harness of the BMS. It can effectively organize and fix scattered wire harnesses, and facilitate the arrangement of various structures in the battery pack case 10 .

In this embodiment, as a preferred implementation, the above-mentioned side part 104 includes a first connecting arm 1041 and a second connecting arm 1042. The first connecting arm 1041 and the second connecting arm 1042 are both connected to the same left side. The first longitudinal beam 102 is connected, and the first connecting arm 1041 and the second connecting arm 1042 are connected, so that a triangle shape is formed between the first connecting arm 1041, the second connecting arm 1042 and the first longitudinal beam 102 on the left side, thereby having It has better structural strength and can avoid the arrangement of the upper case of the battery pack case 10 .

Among them, in this embodiment, the second mounting arm 3 is provided at the connection part of the first connecting arm 1041 and the second connecting arm 1042, and is used to support the triangular side part 104. At the same time, it cooperates with the first mounting arm 2 to connect the entire bracket. The main body 1 is supported on housing longitudinal beams 11 .

It is worth noting that in this embodiment, the aforementioned beam bodies of the main body part 100 and the side part 104 are made of aluminum profiles, and the beam bodies are made by welding process, which has high connection strength and simple process. Easy to operate. And preferably, as shown in Figure 2, the beam body has an n-shaped cross-section. Compared with the traditional square-shaped cross-section of the aluminum profile, the n-shaped cross-section can ensure the structural strength of the aluminum profile while reducing the weight of the aluminum profile. , thereby reducing production costs. The first mounting arm 2 and the second mounting arm 3 are also made of aluminum profiles. At this time, the first mounting arm 2 and the second mounting arm 3 adopt traditional aluminum profiles with a square cross-section.

In order to increase the structural strength of the first mounting arm 2 and the second mounting arm 3, as a preferred embodiment, with reference to FIGS. 1 and 3, the first mounting arm 2 and the second mounting arm 3 are equipped with There are a plurality of reinforcing ribs 301. The multiple reinforcing ribs 301 are spaced apart along the longitudinal direction, and separate the first mounting arm 2 and the second mounting arm 3 to form a plurality of cavities 302. This arrangement can improve the stiffness of the profile and avoid bolts. 9. It becomes unstable after preloading.

Among them, as a preferred embodiment, referring to the state shown in Figure 1, the second mounting arm 3 is L-shaped as a whole, which can easily increase the connection area between the second mounting arm 3 and the housing longitudinal beam 11. Increase the strength of the connection between the two. It can also be used to avoid the layout of wire harnesses and to support wire harnesses. Of course, in this embodiment, the second mounting arm 3 can also be configured as a cylindrical structure or other shaped structure, which is not specifically limited here.

Referring to Figure 1, mounting holes are formed on the tops of the first mounting arm 2 and the second mounting arm 3, and fasteners such as external bolts 9 pass through the mounting holes to connect the first mounting arm 2 and the second mounting arm 3. The arm 3 is mounted on the housing longitudinal beam 11 . Among them, in this embodiment, the number of mounting holes is not specifically limited and can be set according to actual conditions.

In order to facilitate the installation of the BMS, in this embodiment, as a preferred implementation, the above-mentioned BMS installation part is a plurality of beams 101 and each first longitudinal beam 102 and second longitudinal beam 103 of the main body part 100. The blind rivet nut 4 secures the BMS to the BMS mounting bracket through the cooperation of external bolts 9 and other fasteners with the blind rivet nut 4.

Embodiment 2

This embodiment relates to a power battery pack, which is provided with the BMS mounting bracket in Embodiment 1.

In addition, the power battery pack in this embodiment also includes a BMS module. The BMS module includes a BMS main control board 7 and a plurality of BMS slave control boards 8. The BMS slave control boards 8 are installed on the BMS mounting bracket. The BMS main control board 7 is located above the BMS slave control panel 8.

Referring specifically to what is shown in Figure 4, the four corners of the four BMS slave control panels 8 are each provided with four concave mounting slots 801. Fasteners such as external bolts 9 pass through the mounting slots 801 to secure the BMS slave control panels. 8 is arranged on the main body part 100 of the bracket body 1, and the four BMS slave control boards 8 are arranged on the same level. The size of the BMS main control board 7 is larger than the size of the BMS slave control board 8. In this embodiment, the size of the BMS main control board 7 is the sum of the sizes of the two BMS slave control boards 8. The BMS main control board 7 is located along the first The extension direction of the longitudinal beam 102 is set on the two BMSZ slave control boards.

At this time, the BMS main control board 7 and the BMS slave control board 8 can use the same bolt 9 fastener. In addition, in order to prevent the BMS main control board 7 from squeezing the BMS slave control board 8, in this embodiment, as a preferred implementation, the bolt 9 fastener is located between the BMS main control board 7 and the BMS slave control board 8. Support columns 12 are provided between the control boards 8 to support the BMS main control board 7 . Its structure is simple and easy to set up. Of course, it can be understood that in addition to the support column 12, other structures can also be used, which are not further limited here.

This embodiment also relates to an energy storage device, which includes the above-mentioned power battery pack.

The energy storage device of this embodiment is provided with the above-mentioned power battery pack and the BMS mounting bracket in Embodiment 1 is provided in the power battery pack shell 10, which can help ensure the structural strength of the entire BMS mounting bracket while reducing its weight. , which can help reduce the weight of the entire power battery pack, thereby achieving a lightweight design of the entire energy storage device.

The above descriptions are only preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in within the protection scope of this utility model.

Claims (10)

1. BMS installing support, its characterized in that:

the bracket comprises a bracket body which is transversely arranged, and a first mounting arm and a second mounting arm which are longitudinally arranged, wherein the first mounting arm and the second mounting arm are correspondingly arranged at two ends of the bracket body;

the bracket main body is composed of a plurality of beams connected together and is provided with a rectangular main body part and a triangular side part connected to one end of the main body part, and at least the main body part is provided with a BMS installation part;

the first mounting arm is connected to the main body portion, the second mounting arm is connected to the side portion, and the first mounting arm, the second mounting arm and the beam bodies are all made of aluminum profiles.

2. The BMS mounting bracket according to claim 1, wherein:

the main body part comprises two cross beams arranged side by side and two first longitudinal beams arranged between the two cross beams;

the two first longitudinal beams are arranged at intervals along the extending direction of the cross beam, the two ends of the first longitudinal beams are respectively connected with the end parts of the two cross beams, and the first mounting arm is arranged at one end part of the first longitudinal beam.

3. The BMS mounting bracket according to claim 2, wherein:

the first mounting arm and one of the first longitudinal beams are integrally formed, a groove is formed in the first mounting arm, and copper bars in the battery pack can penetrate through the groove.

4. The BMS mounting bracket according to claim 3, wherein:

the main body part is provided with a plurality of second longitudinal beams, the second longitudinal beams are arranged between the two first longitudinal beams, and the second longitudinal beams are arranged at intervals along the extending direction of the cross beam;

one end of the second longitudinal beam is connected with one cross beam, an avoidance space is formed between the other end of the second longitudinal beam and the other cross beam, and the avoidance space is used for avoiding the copper bar.

5. The BMS mounting bracket according to claim 2, wherein:

one of the cross beams is provided with a wire harness mounting bracket which is used for fixing the wire harness of the BMS;

and/or, a copper bar fixing bracket is arranged on the first mounting arm and is used for fixing the copper bar.

6. The BMS mounting bracket according to claim 2, wherein:

the side part comprises a first connecting arm and a second connecting arm, the first connecting arm and the second connecting arm are connected with the same first longitudinal beam, the first connecting arm and the second connecting arm are connected, and the second mounting arm is arranged at the connecting part of the first connecting arm and the second connecting arm.

7. The BMS mounting bracket according to claim 1, wherein:

the first mounting arm and the second mounting arm are internally provided with a plurality of reinforcing ribs, and the reinforcing ribs are arranged at intervals along the longitudinal direction and divide the first mounting arm and the second mounting arm into a plurality of cavities.

8. A power battery pack, characterized in that:

the BMS mounting bracket according to any one of claims 1 to 7 is provided in the power battery pack.

9. The power cell pack of claim 8, wherein:

the power battery pack still includes the BMS module, the BMS module includes BMS main control board and a plurality of BMS slave control boards, BMS slave control board install in on the BMS installing support, BMS main control board locates BMS slave control board top.

10. An energy storage device, characterized in that:

the energy storage device comprising the power cell pack of any one of claims 8 to 9.