Battery mounting bracket and battery pack

Abstract

The utility model relates to battery technology field, concretely is a kind of battery mounting bracket and battery package;The first assembly groove and the second assembly groove for assembling the end part of cylindrical battery are respectively arranged in the upper rack body and the lower rack body in the present application, the two ends of cylindrical battery can be effectively supported, and the stability of cylindrical battery support is improved;The first connecting piece of upper rack body and the second connecting piece of lower rack body are inserted and matched, the assembly of upper rack body and lower rack body is facilitated, and then the assembly of cylindrical battery is facilitated, the problem that cylindrical battery pack support is unstable and assembly is difficult in the prior art is solved.

Description

Technical Field

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

[0002] With the development of new energy vehicles and energy storage equipment, the industry's demand for battery packs that combine high energy density with long lifespan is constantly increasing. Cylindrical lithium-ion batteries, such as those with specifications like 18650, 21700, and 32700, are widely used in battery packs. In a battery pack, multiple cylindrical batteries need to be systematically assembled, mechanically fixed, and electrically connected, thus being connected in series or parallel within a bracket or module structure to form a battery pack. As battery energy capacity continues to increase, the volume, weight, and number of individual cells in battery packs are also increasing, correspondingly raising the requirements for their structural supports and manufacturing assemblability. However, current battery pack brackets for cylindrical batteries still suffer from technical defects such as unstable support for cylindrical batteries and difficulties in assembly. Therefore, there is an urgent need to improve the battery mounting bracket and battery pack to address the technical deficiencies in the prior art. Utility Model Content

[0003] The purpose of this invention is to provide a battery mounting bracket to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A battery mounting bracket includes: an upper bracket and a lower bracket; The upper frame is provided with a first assembly slot, which is used to assemble the positive or negative terminal of the cylindrical battery; The lower frame is provided with a second assembly slot, which is used to assemble the positive or negative terminal of the cylindrical battery. The upper frame is provided with a first connector, and the lower frame is provided with a second connector. The first connector and the second connector are inserted and connected. The bottom of the second assembly slot is provided with multiple first abutment parts, which abut against the positive or negative terminals of the cylindrical battery assembled in the second assembly slot.

[0005] Compared with the prior art, the beneficial effects of this utility model are: By setting up an upper frame and a lower frame, with the upper and lower frames respectively equipped with a first assembly slot and a second assembly slot for assembling the ends of cylindrical batteries, the two ends of the cylindrical batteries can be effectively supported, improving the stability of the support for the cylindrical batteries. The first connector of the upper frame and the second connector of the lower frame are interlocked, facilitating the assembly of the upper and lower frames, and thus facilitating the assembly of the cylindrical batteries. This solves the problems of unstable support and difficult assembly of cylindrical battery pack brackets in the prior art. The bottom of the second assembly slot is provided with multiple first abutment parts that abut against the ends of the cylindrical batteries, further enhancing the fixing effect of the cylindrical batteries and improving the overall performance of the battery mounting bracket.

[0006] As a further improvement to the battery mounting bracket of this application, the top of the second connector is provided with a threaded groove, the first connector is a hollow structure, and the upper frame is provided with a stepped hole at the corresponding part of the first connector. After the second connector is inserted into the first connector, the threaded groove and the stepped hole are provided in a corresponding manner. The insertion connection of the first connector and the second connector is achieved by the bolt passing through the stepped hole and threadedly connecting with the threaded groove. The bolt nut is secured inside the step of the stepped hole.

[0007] As a further improvement to the battery mounting bracket of this application, the bottom of the first mounting groove is provided with a plurality of second abutment portions, which abut against the positive or negative terminals of the cylindrical battery mounted in the first mounting groove.

[0008] As a further improvement to the battery mounting bracket of this application, the first connector is disposed on the outer edge of the upper frame and the second connector is disposed on the inner edge of the lower frame.

[0009] As a further improvement to the battery mounting bracket of this application, the upper frame is provided with a first connecting part and the lower frame is provided with a second connecting part. The axis of the first connecting part is located at the center of the circumcircle of the triangle formed by the centers of three adjacent first mounting slots. The axis of the second connection part is set at the center of the circumcircle of the triangle formed by the centers of three adjacent second assembly slots; The second connecting part is inserted and connected to the first connecting part.

[0010] A battery pack includes any of the above-mentioned battery mounting brackets, wherein a plurality of cylindrical batteries are assembled inside the battery mounting brackets, the plurality of cylindrical batteries are connected in series, and a total positive connecting piece and a total negative connecting piece are fixedly connected to the upper frame of the battery mounting brackets. The main positive connector is connected to the positive terminal of the cylindrical battery; The main negative connector is connected to the negative terminal of the cylindrical battery.

[0011] As a further improvement to a battery pack of this application, a battery pack is formed by two cylindrical batteries in a battery mounting bracket, with the cylindrical batteries in the battery pack being arranged at opposite ends. The positive terminal of the cylindrical cell in the battery pack is set to correspond to the negative terminal of the cylindrical cell in the adjacent battery pack.

[0012] As a further improvement to a battery pack of this application, the positive terminal of the cylindrical battery in two adjacent battery packs is welded to the negative terminal of the cylindrical battery in the adjacent battery pack through a first connecting piece.

[0013] As a further improvement to a battery pack of this application, a main positive connector connects the positive terminals of two cylindrical cells within a single battery pack.

[0014] As a further improvement to a battery pack of this application, a total negative connection piece connects the negative terminals of two cylindrical cells within a single battery pack. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the disassembled structure of the battery mounting bracket of this utility model; Figure 2 This is a schematic diagram of the lower frame structure of this utility model; Figure 3 This is a schematic diagram of the upper frame structure of this utility model; Figure 4 for Figure 3 A magnified view of a portion at point A; Figure 5 This is a schematic diagram of the battery pack structure of this utility model; Figure 6 This is one of the schematic diagrams showing the connection structure of the three battery packs in the battery pack of this utility model; Figure 7 This is the second schematic diagram of the connection structure of the three battery packs in the battery pack of this utility model; In the picture: 100 - Battery mounting bracket; 1-Upper frame; 11-First assembly slot; 12-Second contact section; 13-First connector; 131-Step hole; 132- Bolt; 14-First connecting part; 2-Lower frame; 21 – Second assembly slot; 22 – First contact point; 23 – Second connector; 231 - Threaded groove; 24 - Second connecting part; 300-battery pack; 31-Total positive connector; 32-Total negative connector; 33 - Cylindrical battery; First connecting piece. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Implementation Method 1 like Figure 1 The diagram shows the disassembly mechanism of the upper frame 1 and lower frame 2 of this application. In the above structure, the upper frame 1 is provided with a first assembly slot 11, which is used to assemble the positive or negative terminal of the cylindrical battery 33; the lower frame 2 is provided with a second assembly slot 21, which is also used to assemble the positive or negative terminal of the cylindrical battery 33. In the specific battery pack 300pack process, the lower frame 2 is preferably placed on a horizontal platform or on an assembly line. Workers insert the cylindrical batteries 33 into the second assembly slot 21 in an orderly manner to achieve basic centralized placement of the cylindrical batteries 33. The bottom of the second assembly slot 21 is provided with multiple first abutment parts 22, which abut against the positive or negative terminal of the cylindrical battery 33 assembled in the second assembly slot 21. This ensures that the cylindrical batteries 33 do not slide directly out of the second assembly slot 21 during the centralized placement process.

[0018] It should be further noted that the battery mounting bracket 100 of this application can simultaneously support series or parallel connection of cylindrical batteries 33. When implementing series connection of cylindrical batteries 33, it is only necessary to assemble the cylindrical batteries 33 sequentially into the second mounting slot 21 in different placement directions. Considering that the positive terminal of the cylindrical battery 33 needs to be inserted into the second mounting slot 21 during the series connection process, the first abutment portion 22 of the second mounting slot 21 of this application is set at the outer edge of the second mounting slot 21, and the second mounting slot 21 is not directly sealed at the bottom, thereby reserving a certain space for the positive terminal of the cylindrical battery 33. The bottom of the first mounting slot 11 is provided with multiple second abutment portions 12, which abut against the positive or negative terminals of the cylindrical batteries 33 assembled in the first mounting slot 11 using the same principle as described above. Here, the description of the first abutment portion 22 of the second mounting slot 21 only applies to the positive terminal of the cylindrical battery 33, while the same applies to the negative terminal.

[0019] Furthermore, the upper frame 1 is provided with a first connecting member 13, and the lower frame 2 is provided with a second connecting member 23, the first connecting member 13 and the second connecting member 23 being inserted and connected; for example Figure 2 The diagram shown is a structural schematic of the lower frame 2. Figure 3 The structural schematic diagram of the upper frame 1 shown is combined with... Figure 1 The second connector 23 is provided with a threaded groove 231 at the top. The first connector 13 is a hollow structure. The upper frame 1 is provided with a stepped hole 131 at the corresponding part of the first connector 13. After the second connector 23 is inserted into the first connector 13, the threaded groove 231 is set with the stepped hole 131. The first connector 13 and the second connector 23 are connected by bolt 132 passing through the stepped hole 131 and threadedly connecting with the threaded groove 231. Depend on Figure 4 shown Figure 6 A further enlarged view shows that the nut of bolt 132 is secured within the step of the stepped hole 131. In the specific implementation process, after the cylindrical batteries 33 are sequentially assembled into the second assembly slot 21 of the lower frame 2 to achieve centralized placement of the foundation, the upper frame 1 is installed onto the lower frame 2 via the mating connection of the first connector 13 and the second connector 23. After completing the connection between the upper frame 1 and the lower frame 2 and the battery assembly, the entire battery pack 300 forms a stable structure. The nut of bolt 132, secured within the step of the stepped hole 131, ensures the stability of the connection between the first connector 13 and the second connector 23, thereby ensuring that the battery mounting bracket 100 can reliably fix the cylindrical batteries 33, meeting the needs of the battery pack 300 in different usage scenarios.

[0020] Furthermore, as a further improvement to the battery mounting bracket 100 of this application, the first connector 13 is disposed on the outer edge of the upper frame 1, and the second connector 23 is disposed on the inner edge of the lower frame 2. In addition, the upper frame 1 is provided with a first connecting portion 14, and the lower frame 2 is provided with a second connecting portion 24. The axis of the first connecting portion 14 is located at the center of the circumcircle of the triangle formed by the centers of three adjacent first mounting slots 11; the axis of the second connecting portion 24 is located at the center of the circumcircle of the triangle formed by the centers of three adjacent second mounting slots 21; the second connecting portion 24 is inserted into and connected to the first connecting portion 14. Thus, through the above arrangement, the connection between the upper frame 1 and the lower frame 2 is more stable and precise. This positional arrangement of the first connecting portion 14 and the second connecting portion 24 allows for better distribution of force during connection, preventing loosening or damage due to excessive localized force.

[0021] During the use of the battery pack 300, when subjected to external impact or vibration, this stable and precise connection method effectively prevents relative displacement between the upper frame 1 and the lower frame 2, further ensuring the stability of the cylindrical battery 33 within the battery mounting bracket 100. Simultaneously, this design facilitates quick and accurate connection of the upper frame 1 and the lower frame 2 during assembly, improving assembly efficiency, reducing assembly difficulty, and making the entire assembly process of the battery pack 300 smoother, better meeting the needs of large-scale production. Implementation Method 2 To further improve the manufacturing process of the battery pack 300, this application further proposes a battery pack 300 structure based on the battery mounting bracket 100 proposed in Embodiment 1. Specifically, as follows... Figure 5 As shown, the battery mounting bracket 100 of this application is equipped with a plurality of cylindrical batteries 33, which are connected in series. The upper frame 1 of the battery mounting bracket 100 is fixedly connected with a total positive connecting piece 31 and a total negative connecting piece 32. The total positive connecting piece 31 is connected to the positive terminal of the cylindrical battery 33, and the total negative connecting piece 32 is connected to the negative terminal of the cylindrical battery 33.

[0022] In practical operation, when the battery pack 300 is connected to the circuit and begins to work, the main positive connection piece 31 connects the positive terminals of the first series-connected cylindrical battery 33, allowing current to flow smoothly from the positive terminal. Similarly, the main negative connection piece 32 connects the negative terminals of the last series-connected cylindrical battery 33, ensuring current flows smoothly from the negative terminal. This connection method ensures that multiple cylindrical batteries 33 connected in series can stably output power, providing continuous and reliable power support to the electrical equipment. Furthermore, due to the robust design of the battery mounting bracket 100, even when encountering external interference or vibration during battery pack 300 operation, the cylindrical batteries 33 can always remain in the correct position, preventing loose connections or short circuits due to displacement. This ensures the stability and safety of the battery pack 300, significantly extends its service life, reduces various problems caused by battery failure, and improves the reliability of the entire power system.

[0023] Furthermore, within the battery mounting bracket 100, a battery pack is formed by two cylindrical batteries 33, with the positive terminals of the cylindrical batteries 33 within the battery pack corresponding to each other. The positive terminals of the cylindrical batteries 33 within the battery pack correspond to the negative terminals of the cylindrical batteries 33 in the adjacent battery pack. The positive terminals of the cylindrical batteries 33 in two adjacent battery packs are welded to the negative terminals of the cylindrical batteries 33 in the adjacent battery pack via a first connecting piece 34. Figure 6 and Figure 7 The diagram shows the series connection between the three battery packs. Figure 6 The positive terminal of the cylindrical battery 33 in two adjacent battery packs is welded to the negative terminal of the cylindrical battery 33 in the adjacent battery pack through the first connecting piece 34. Figure 7 As shown Figure 6 The diagram shows a bottom view of the three battery packs. In this diagram, the bottom of the three battery packs is connected to another battery pack with opposite positive and negative terminals via another first connecting piece 34, thereby realizing a series connection between multiple battery packs.

[0024] Specifically, the working principle of the above connection method is as follows: When current flows through the battery pack, since the positive terminals of the cylindrical cells 33 in the battery pack are correspondingly arranged with the negative terminals of the cylindrical cells 33 in the adjacent battery pack and welded together through the first connecting piece 34, the current can flow sequentially from the positive terminal of one battery pack to the negative terminal of the adjacent battery pack through the first connecting piece 34, and then out from the positive terminal of the adjacent battery pack to the negative terminal of the next adjacent battery pack, and so on, realizing series conduction between multiple battery packs. This series connection method can increase the overall voltage of the battery pack 300, meet the high voltage requirements of different devices, and at the same time, through reasonable layout and connection design, ensure the stability and reliability of current transmission between battery packs, reduce energy loss, and improve the efficiency and performance of the battery pack 300.

[0025] Furthermore, the main positive connector 31 connects to the positive terminals of the two cylindrical cells 33 within the single battery pack. The main negative connector connects to the negative terminals of the two cylindrical cells 33 within the single battery pack. Thus, this arrangement makes the cylindrical cells 33 within the battery pack 300 more compactly and orderly connected, optimizing the internal space layout of the battery pack 300, reducing unnecessary space waste, allowing the battery pack 300 of the same volume to accommodate more cells, and increasing the energy density of the battery pack 300.

[0026] Specifically, the orderly connection method described in this application further enhances the structural stability of the battery pack 300. When the battery pack 300 is subjected to external impact, the connection between each battery is more secure, reducing the probability of failure caused by loose connections. At the same time, this connection method also facilitates the assembly and maintenance of the battery pack 300. During the production process, workers can quickly complete the connection and installation of batteries according to a predetermined sequence and specifications, improving production efficiency. In subsequent maintenance and repair, it also makes it easier to locate and troubleshoot problems, reducing maintenance costs.

[0027] Other aspects that are the same as in Implementation Method 1 will not be described again in this implementation method.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A battery mounting bracket, characterized in that, include: Upper frame and lower frame; The upper frame is provided with a first assembly slot, which is used to assemble the positive or negative terminal of a cylindrical battery. The lower frame is provided with a second assembly slot, which is used to assemble the positive terminal or the negative terminal of the cylindrical battery; The upper frame is provided with a first connector, and the lower frame is provided with a second connector, and the first connector and the second connector are plugged into each other. The bottom of the second assembly slot is provided with a plurality of first abutting parts, which abut against the positive or negative terminal of the cylindrical battery assembled in the second assembly slot.

2. The battery mounting bracket according to claim 1, characterized in that, The top of the second connector is provided with a threaded groove, the first connector is a hollow structure, and the upper frame is provided with a stepped hole at the corresponding part of the first connector. After the second connector is inserted into the first connector, the threaded groove is provided with a corresponding step hole. The first connector and the second connector are connected by threading through the stepped hole and the threaded groove with a bolt. The nut of the bolt is engaged within the step of the stepped hole.

3. A battery mounting bracket according to claim 1, characterized in that, The bottom of the first assembly slot is provided with a plurality of second abutment portions, which abut against the positive or negative terminal of the cylindrical battery assembled in the first assembly slot.

4. A battery mounting bracket according to claim 1, characterized in that, The first connector is disposed on the outer edge of the upper frame, and the second connector is disposed on the inner edge of the lower frame.

5. A battery mounting bracket according to claim 1, characterized in that, The upper frame is provided with a first connecting part, and the lower frame is provided with a second connecting part. The axis of the first connecting part is located at the center of the circumcircle of the triangle formed by the centers of three adjacent first assembly slots. The axis of the second connecting part is located at the center of the circumcircle of the triangle formed by the centers of three adjacent second assembly slots; The second connecting part is inserted into and connected to the first connecting part.

6. A battery pack, characterized in that, The battery mounting bracket includes any one of claims 1-5, wherein a plurality of cylindrical batteries are assembled inside the battery mounting bracket, the plurality of cylindrical batteries are connected in series, and a total positive connecting piece and a total negative connecting piece are fixedly connected to the upper frame of the battery mounting bracket. The main positive connector is connected to the positive terminal of the cylindrical battery; The total negative connector is connected to the negative terminal of the cylindrical battery.

7. A battery pack according to claim 6, characterized in that, Within the battery mounting bracket, a battery pack is formed by two cylindrical batteries, with the positive terminals of the cylindrical batteries in the battery pack being arranged correspondingly. The positive terminal of the cylindrical battery in the battery pack is configured to correspond to the negative terminal of the cylindrical battery in the adjacent battery pack.

8. A battery pack according to claim 7, characterized in that, Two adjacent battery packs The positive terminal of the cylindrical battery in the battery pack is welded to the negative terminal of the adjacent cylindrical battery in the battery pack via a first connecting piece.

9. A battery pack according to claim 6, characterized in that, The main positive connector connects the positive terminals of the two cylindrical cells within a single battery pack.

10. A battery pack according to claim 6, characterized in that, The total negative connector connects the negative terminals of the two cylindrical cells within a single battery pack.

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