Battery pack inner support and battery pack

Abstract

The utility model relates to battery management system (BMS) installation technical field, concretely relates to a kind of battery pack inner support and battery pack, comprising: first support (1);Second support (2), the lower surface of the second support (2) is detachably installed on the first support (1), the upper surface of the second support (2) and the upper surface of the first support (1) have height difference, so that the first support (1) and the second support (2) form stepped support structure.The utility model adopts split stepped support structure, and the traditional integrated support is decomposed into the detachable combination of first support and second support, realizes the modularization pre-installation and quick disassembly of BMS box, improves production efficiency and maintenance convenience;Meanwhile, stepped design optimizes wire harness layout space, reduces the abrasion risk caused by vibration, enhances the overall reliability and stability of system.

Description

Technical Field

[0001] This utility model relates to the field of battery management system (BMS) installation technology, specifically to a battery pack internal support and battery pack. Background Technology

[0002] In the design of power battery systems for electric and hybrid vehicles, the Battery Management System (BMS), as the core control unit of the battery pack, has a significant impact on the safety and operational efficiency of the entire vehicle due to the reliability of its installation structure and the ease of maintenance. Currently, the BMS box is typically installed inside the battery pack using a dedicated mounting bracket. The structural design of this bracket directly affects the stability of the BMS, as well as the manufacturability and maintainability of the overall system.

[0003] In existing technologies, a one-piece molded bracket is commonly used. Although this bracket has a certain structural strength, in practical applications, this one-piece bracket structure often does not fully consider the convenience of installation and maintenance. This results in complex and time-consuming operations when assembling or replacing the BMS box, reducing production and maintenance efficiency. As a result, existing BMS brackets are unable to meet the requirements of modern production cycle and cannot guarantee the reliability requirements during operation and maintenance, thus restricting the optimization and improvement of the overall performance of the battery pack system. Utility Model Content

[0004] To address the above technical problems, this utility model provides a technical solution for a battery pack inner support and a battery pack.

[0005] The technical problem solved by this utility model can be achieved by the following technical solution:

[0006] A battery pack internal support includes:

[0007] First support;

[0008] The second bracket has its lower surface detachably mounted on the first bracket, and the upper surface of the second bracket and the upper surface of the first bracket have a height difference, so that the first bracket and the second bracket form a stepped bracket structure.

[0009] Preferably, the second bracket includes an integrally formed fixing part and a positioning part;

[0010] The upper surface of the fixing part serves as the upper surface of the second bracket and is detachably connected to the BMS box inside the battery pack.

[0011] The lower surface of the positioning part serves as the lower surface of the second bracket and is detachably mounted on the first bracket.

[0012] Preferably, the fixing part is provided with a plurality of upwardly extending first mounting rods, and the BMS box is provided with a plurality of mounting holes. The first mounting rods cooperate with the mounting holes to fix the BMS box to the fixing part.

[0013] Preferably, the positioning part is provided with a plurality of first fixing holes, and the upper surface of the first bracket is provided with a plurality of upwardly extending mounting posts. The mounting posts cooperate with the first fixing holes to fix the positioning part on the first bracket.

[0014] Preferably, it further includes: at least one wire harness fixing bracket, the wire harness fixing bracket being detachably mounted on the first bracket and located on one side of the second bracket, the wire harness fixing bracket having a wire harness limiting channel inside.

[0015] Preferably, the wire harness fixing bracket is a U-shaped bracket, and the arched part of the U-shaped bracket and the upper surface of the first bracket together form the wire harness limiting channel.

[0016] Preferably, it further includes a third bracket, which includes an integrally formed connecting part and a mounting part;

[0017] The connecting part is detachably mounted on the lower surface of the first bracket;

[0018] The mounting portion extends out from both sides of the first bracket and is detachably fixed to the vertical beam of the battery box.

[0019] Preferably, the connecting part is provided with a plurality of upwardly extending second mounting rods, and the first bracket is provided with a plurality of second fixing holes. The second mounting rods cooperate with the second fixing holes to fix the connecting part to the lower surface of the first bracket.

[0020] Preferably, the lower surface of the first bracket is provided with a downwardly extending box fixing structure at the edge, and the box fixing structure is connected to the vertical beam of the battery box.

[0021] A battery pack is also provided, including an inner support frame as described above.

[0022] The beneficial effects of this utility model are as follows:

[0023] The modular stepped support structure breaks down the traditional integrated support into a detachable combination of the first and second supports, enabling modular pre-installation and quick assembly / disassembly of the BMS box, thus improving production efficiency and maintenance convenience.

[0024] The stepped structure design optimizes the wiring harness layout space, reduces the risk of wear caused by vibration, and enhances the overall reliability and stability of the system. Attached Figure Description

[0025] Figure 1 This is a structural diagram of the internal support frame of the battery pack of this utility model;

[0026] Figure 2 This is a structural diagram of the second support of this utility model;

[0027] Figure 3 This is a structural diagram of the first support structure of this utility model;

[0028] Figure 4 This is a structural diagram of the third support of this utility model;

[0029] Figure 5 This is a schematic diagram of the assembly structure of the BMS box and the second bracket of this utility model;

[0030] Figure 6 This is a schematic diagram of the bracket assembly structure of this utility model.

[0031] Explanation of reference numerals in the attached drawings: 1. First bracket; 2. Second bracket; 3. Third bracket; 4. Wiring harness fixing bracket; 5. BMS box; 6. Box fixing structure; 11. Mounting post; 12. Second fixing hole; 21. Fixing part; 22. Positioning part; 23. First mounting rod; 24. First fixing hole; 31. Connecting part; 32. Mounting part; 33. Second mounting rod; 34. Third fixing hole; 41. Wiring harness fixing hole; 61. Box fixing hole. Detailed Implementation

[0032] 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.

[0033] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0034] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0035] Reference Figure 1 This utility model provides a battery pack inner support, comprising:

[0036] First support 1;

[0037] The second support 2 has its lower surface detachably mounted on the first support 1. The upper surface of the second support 2 and the upper surface of the first support 1 have a height difference, so that the first support 1 and the second support 2 form a stepped support structure.

[0038] Specifically, in this embodiment of the utility model, in order to overcome the problem of complex operation and long time consumption in the installation and maintenance of the one-piece molded bracket, a split step structure design is adopted to decompose the traditional whole bracket into a first bracket 1 and a second bracket 2 that can be detachably connected, and to form a step layout by utilizing the height difference between the upper surfaces of the two, so as to realize the convenient assembly and rapid maintenance of the BMS box 5.

[0039] Specifically, the battery pack internal bracket of this utility model is applied inside the battery pack of electric vehicles or hybrid vehicles. It is usually installed on the vertical beam of the battery box or on a pre-set mounting plane to provide stable and reliable fixed support for the BMS box 5.

[0040] In this split-type stepped structure, the first support 1 serves as the basic base, and its structural features are as follows: Figure 3 As shown, the first bracket 1 has a planar plate structure with a highly rigid geometry. The lower surface of the first bracket 1 is designed with multiple mounting holes for a stable connection with the vertical beam of the battery box or a preset mounting plane, so as to bear the main structural load and vibration impact transmitted from the battery management system (BMS) and the second bracket 2.

[0041] At the same time, refer to Figure 2 The second bracket 2 serves as the direct mounting carrier for the BMS box 5 and is detachably mounted to the upper surface of the first bracket 1 using fasteners. A certain height difference is formed between the upper surface of the second bracket 2 and the upper surface of the first bracket 1, which constitutes the main feature of the stepped structure.

[0042] This design not only optimizes the internal space layout of the battery pack and improves space utilization efficiency, but more importantly, the three-dimensional installation space formed by the stepped structure provides more ample and convenient operating space for the standardized layout of the BMS wiring harness and the insertion and removal of electrical connectors, effectively avoiding excessive bending of the wiring harness and interference wear.

[0043] In a preferred embodiment of the present invention, the second bracket 2 includes an integrally formed fixing part 21 and a positioning part 22;

[0044] The upper surface of the fixing part 21 serves as the upper surface of the second bracket 2 and is detachably connected to the BMS box 5 inside the battery pack.

[0045] The lower surface of the positioning part 22 serves as the lower surface of the second bracket 2 and is detachably mounted on the first bracket 1.

[0046] Specifically, in the embodiments of this utility model, referring to Figure 2 The second bracket 2 integrates the fixing part 21 and the positioning part 22 into a whole structure through the one-piece molding technology. Both the fixing part 21 and the positioning part 22 are planar plate structures, and they are naturally connected by a vertical transition surface to form a stepped whole with stable structure and excellent rigidity.

[0047] During installation, refer to Figure 5 Two second brackets 2 are symmetrically arranged, using the upper surface of the fixing part 21 as the mounting surface, and are detachably connected to the mounting points on both sides of the BMS box 5; at the same time, referring to Figure 6 By using the lower surface of the positioning part 22 as the installation reference surface, the two second brackets 2 are detachably fixed to the corresponding positions on the upper surface of the first bracket 1, thereby forming a stable stepped support structure to achieve stable support and precise positioning of the BMS box 5.

[0048] Specifically, the first bracket 1 supports the installation of multiple BMS boxes 5, and its design has good scalability and adaptability. Multiple sets of mounting points can be arranged on the upper surface of the first bracket 1 along its length direction. Each set of mounting points is used to fix a pair of second brackets 2 through the lower surface of the positioning part 22, and then to support a BMS box 5 through the upper surface of the fixing part 21.

[0049] This modular layout allows for the flexible installation of one or more BMS boxes 5 according to the actual capacity and configuration requirements of the battery pack system. By utilizing the step height difference formed by the upper and lower surfaces of the second bracket 2, the versatility of the bracket assembly and the overall space utilization are significantly improved, providing effective support for the platform-based design and functional expansion of the battery pack system.

[0050] In a preferred embodiment of the present invention, the fixing part 21 is provided with a plurality of upwardly extending first mounting rods 23, and the BMS box 5 is provided with a plurality of mounting holes. The first mounting rods 23 cooperate with the mounting holes to fix the BMS box 5 on the fixing part 21.

[0051] Specifically, in the embodiments of this utility model, referring to Figure 2 The fixing part 21 is provided with two vertically upward extending first mounting rods 23, the ends of which are machined with external threads; correspondingly, the BMS box 5 is provided with two mounting holes on both sides corresponding to the positions of the first mounting rods 23.

[0052] During installation, refer to Figure 5 Align the mounting holes of the BMS box 5 with the first mounting rod 23 and then tighten it by screwing the rivet nut on the end of the first mounting rod 23, thereby achieving a reliable connection between the BMS box 5 and the fixing part 21.

[0053] This connection method is not only easy to operate and accurate in positioning, but also has excellent vibration resistance, effectively ensuring the stability of BMS Box 5 during vehicle operation.

[0054] In addition to the locking method described above, other connection methods can be used to achieve detachable fixation with the BMS box 5. For example, a snap-fit ​​connection structure can be used, where a fixing slot or snap-fit ​​protrusion is provided in the fixing part 21, and a corresponding elastic snap or snap interface is provided on the BMS box 5, allowing for quick installation and disassembly through snap-fit ​​engagement. Alternatively, a threaded hole structure can be provided in the fixing part 21, allowing for locking and fixation from the mounting point of the BMS box 5 with screws. These alternative connection solutions can all meet the diverse needs for connection reliability, ease of operation, and maintenance efficiency in different application scenarios.

[0055] In a preferred embodiment of the present invention, the positioning part 22 is provided with a plurality of first fixing holes 24, and the upper surface of the first bracket 1 is provided with a plurality of upwardly extending mounting posts 11. The mounting posts 11 cooperate with the first fixing holes 24 to fix the positioning part 22 on the first bracket 1.

[0056] Specifically, in the embodiments of this utility model, referring to Figure 3 The mounting post 11 is a stud that is vertically fixed to the upper surface of the first bracket 1. Accordingly, refer to... Figure 2 The first fixing hole 24 on the positioning part 22 is a smooth hole, and its diameter is adapted to the outer diameter of the stud.

[0057] During installation, refer to Figure 6 Align the first fixing hole 24 of the positioning part 22 with the mounting post 11 of the first bracket 1, and then tighten the rivet nut at the threaded end of the mounting post 11 to achieve a reliable connection between the second bracket 2 and the first bracket 1.

[0058] This stud connection method not only provides precise positioning guidance, ensuring the installation accuracy of the second bracket 2, but also has the advantages of strong connection and good vibration resistance, and can effectively withstand various mechanical stresses generated during vehicle operation.

[0059] Besides the aforementioned fixing method using studs and press-fit nuts, other connection structures can be employed to achieve rapid assembly. For example, the positioning part 22 can be designed as an elastic hook structure, with a groove matching the shape of the elastic hook on the upper surface of the second bracket 2. During assembly, simply align the elastic hook with the corresponding groove and apply pressure; the deformation and recovery characteristics of the elastic hook will enable a quick snap-fit ​​connection. This method is extremely simple to operate, requires no additional fasteners, significantly improves assembly efficiency, and is particularly suitable for applications requiring frequent maintenance or replacement of the BMS box 5, further enhancing system maintainability while ensuring connection reliability.

[0060] As a preferred embodiment of this utility model, it also includes:

[0061] At least one wire harness fixing bracket 4 is detachably mounted on the first bracket 1 and located on one side of the second bracket 2. The wire harness fixing bracket 4 has a wire harness limiting channel inside.

[0062] Specifically, in order to constrain and protect the wire harness, in this embodiment of the invention, reference is made to... Figure 1 and Figure 3 The wiring harness fixing bracket 4 is a U-shaped bracket. The arched part of the U-shaped bracket and the upper surface of the first bracket 1 together form a wiring harness limiting channel. The opening of the channel faces the direction of the BMS wiring harness extension, which facilitates the introduction and exit of the wiring harness. The wiring harness limiting channel can accommodate and constrain the BMS-related wiring harness, preventing it from shifting, wearing, or interfering with other components during vehicle vibration.

[0063] Correspondingly, the bottom of the Z-shaped bracket is a flat support portion that extends horizontally to both sides, and the flat support portion is provided with mounting through holes; a rivet nut is pre-embedded at the corresponding position on the upper surface of the first bracket 1, and the wire harness fixing bracket 4 and the first bracket 1 are detachably connected by screws passing through the mounting through holes and cooperating with the rivet nut.

[0064] In addition, a wire harness fixing hole 41 is provided at the center of the arched part for further fixing the wire harness. During installation, cable ties or other binding materials can be used to pass through the wire harness fixing hole 41 to bind and fix the wire harness in the limiting channel, thereby achieving precise control and reliable fixation of the wire harness direction, ensuring a neat and orderly layout of the wire harness, and effectively improving its seismic resistance and reliability.

[0065] In particular, to further optimize wire harness management and adapt to complex wiring requirements, this utility model embodiment supports the installation of multiple wire harness fixing brackets 4, which can be flexibly arranged and combined according to the number of BMS boxes 5 and the actual routing of the wire harnesses.

[0066] Multiple harness fixing brackets 4 can be arranged in parallel or staggered to organize harnesses with different functions or directions, thereby achieving separate harness management and avoiding harness crossing and tangling. This multi-bracket collaborative layout greatly enhances the modularity and adaptability of harness management, meeting the higher requirements for harness layout under different battery pack capacities and electrical configurations, and further improving the neatness, safety, and maintainability of the entire battery pack's internal wiring.

[0067] As a preferred embodiment of the present invention, it also includes a third bracket 3, which includes an integrally formed connecting part 31 and a mounting part 32;

[0068] The connecting part 31 is detachably mounted on the lower surface of the first bracket 1;

[0069] Mounting part 32 extends out from both sides of the first bracket 1 and is detachably fixed to the vertical beam of the battery box.

[0070] Specifically, in the embodiments of this utility model, referring to Figure 4 The second bracket 2 integrates the connecting part 31 and the mounting part 32 into a stepped integral structure through integral molding technology. Both the connecting part 31 and the mounting part 32 are planar plate structures, and they are naturally connected by a vertical transition surface to form a support component with high structural strength and rigidity.

[0071] Unlike the second bracket 2, which is used to mount the BMS box 5, the third bracket 3 is specifically designed to secure the entire bracket assembly to the battery box.

[0072] Accordingly, refer to Figure 3 The two sides of the first bracket 1 are designed with a stepped recessed shape to provide installation space. Two third brackets 3 are arranged symmetrically, and the connecting part 31 of each third bracket 3 is set in the stepped recessed area on both sides of the first bracket 1, and a reliable connection is achieved by fasteners; the mounting part 32 extends horizontally outward beyond the side of the first bracket 1 to provide an interface for connection with the battery box.

[0073] During installation, firstly, align and fix the connecting parts 31 of the two third brackets 3 from below the first bracket 1 to the stepped recessed areas on both sides, so that the first bracket 1 is supported on the third brackets 3. Then, place the assembled bracket structure into the battery box, and connect the horizontally extending mounting part 32 of the third bracket 3 to the vertical beam of the battery box with fasteners, thereby achieving a stable installation of the entire bracket assembly in the battery pack.

[0074] This bottom-up installation method is significantly different from the method of installing the second bracket 2 from top to bottom on the upper surface of the first bracket 1. This method enables the entire bracket system to support and fix the first bracket 1 and the upper components from the bottom up through the third bracket 3.

[0075] In a preferred embodiment of the present invention, the connecting part 31 is provided with a plurality of upwardly extending second mounting rods 33, and the first bracket 1 is provided with a plurality of second fixing holes 12. The second mounting rods 33 cooperate with the second fixing holes 12 to fix the connecting part 31 to the lower surface of the first bracket 1.

[0076] Specifically, in the embodiments of this utility model, referring to Figure 3 The stepped recessed areas on both sides of the first bracket 1 are respectively provided with multiple second fixing holes 12, and a rivet nut is pre-embedded above each second fixing hole 12; correspondingly, referring to Figure 4 The connecting part 31 is provided with two vertically upward extending second mounting rods 33, the ends of which are machined with external threads that cooperate with the press-fit nut.

[0077] During installation, align the second mounting rod 33 of the connecting part 31 with the second fixing hole 12 from the lower surface of the first bracket 1, and then screw the second mounting rod 33 so that its external thread engages and tightens with the pre-embedded rivet nut, thereby achieving a reliable connection between the third bracket 3 and the first bracket 1.

[0078] This connection method not only provides precise positioning guidance through threaded engagement, ensuring the installation accuracy of the third bracket 3, but also achieves bottom-up support and fixation. This contrasts sharply with the second bracket 2, which uses nuts for top-down locking. The two installation methods complement each other, together forming a stable and reliable multi-layered support system.

[0079] In a preferred embodiment of the present invention, the mounting part 32 is provided with a plurality of third fixing holes 34, and the vertical beam of the battery box is provided with mounting interfaces corresponding to the positions of the third fixing holes 34.

[0080] Specifically, in the embodiments of this utility model, referring to Figure 4 The third fixing hole 34 is a round hole structure; during installation, screws are passed through the third fixing hole 34 and locked with the mounting interface on the vertical beam of the box, thereby realizing a reliable connection between the third bracket 3 and the vertical beam of the battery box.

[0081] In addition to using a screw and fixing hole structure, the mounting part 32 can also be quickly connected to the vertical beam of the battery box via a snap-fit ​​mechanism. For example, an elastic snap-fit ​​can be installed on the mounting part 32, and a corresponding snap-fit ​​groove can be arranged on the vertical beam of the box, achieving instant locking by pressing. This tool-free installation method significantly improves assembly efficiency and is particularly suitable for applications requiring frequent maintenance or replacement, further enhancing the maintainability of the system while ensuring connection reliability.

[0082] In a preferred embodiment of the present invention, a downwardly extending box fixing structure 6 is provided at the edge of the lower surface of the first bracket 1, and the box fixing structure 6 is connected to the vertical beam of the battery box.

[0083] Specifically, since the third support 3 only connects to and supports a local area of ​​the first support 1 (e.g., Figure 1 As shown at both rear ends, the first bracket 1 has a section lacking direct connection to the housing, which may lead to insufficient support stiffness and excessive vibration response in this area. Therefore, refer to... Figure 3 In this embodiment of the utility model, a box fixing structure 6 is provided at the edge of the lower surface of the first bracket 1 where there is no support. The box fixing structure 6 is a downwardly extending lug, which is provided with a box fixing hole 61.

[0084] During installation, fasteners such as screws or bolts are passed through the fixing holes 61 of the battery box and screwed into the pre-set threaded holes on the vertical beam of the battery box. After tightening, the first bracket 1 and the vertical beam of the battery box can be firmly connected.

[0085] This structural design not only effectively strengthens the support stiffness of the first bracket 1 and suppresses vibration, but also simplifies the installation process and improves assembly efficiency and connection reliability.

[0086] As a preferred embodiment of this utility model, refer to Figure 1 , Figure 5 and Figure 6 The installation process of the internal bracket of this battery pack mainly includes the following steps:

[0087] Step 1: Fix the wire harness fixing bracket 4 to the predetermined position of the first bracket 1;

[0088] Step 2: Place the BMS box 5 between two symmetrically arranged second brackets 2, aligning the mounting points on both sides with the fixing parts 21 of the two second brackets 2 respectively, and connect them with fasteners to complete the pre-installation of the BMS box 5.

[0089] Step 3: Align the positioning parts 22 of the two second brackets 2 with the mounting posts 11 symmetrically distributed on the upper surface of the first bracket 1, insert them, and tighten the rivet nuts at the threaded ends of the mounting posts 11 to securely fix the second brackets 2 to the first bracket 1.

[0090] Step 4: Align the connecting parts 31 of the two third brackets 3 with the second fixing holes 12 on both sides of the first bracket 1 from below, and fix the third brackets 3 to the lower surface of the first bracket 1 using fasteners.

[0091] Step 5: Place the assembled bracket structure into the battery box, align the mounting part 32 of the third bracket 3 and the box fixing structure 6 on the lower surface of the first bracket 1 with the vertical beam of the battery box, and finally fix them to the box with fasteners.

[0092] Accordingly, when disassembling the brackets inside the battery pack, loosen the fasteners at each connection point in reverse order, and the BMS box 5 along with each bracket can be gradually separated from the battery box, making the maintenance process simple and quick.

[0093] This utility model also provides a battery pack, including an inner support frame as described above.

[0094] Specifically, in this embodiment of the present invention, the battery pack securely mounts the BMS box 5 inside the battery housing via the aforementioned battery pack inner bracket. The third bracket 3 of the battery pack inner bracket is fixed to the vertical beam of the battery housing via the mounting part 32, and the first bracket 1 is reinforcedly connected to the vertical beam of the battery housing via the housing fixing structure 6, together forming a stable support system.

[0095] By employing a split stepped bracket, this battery pack achieves modular and standardized installation of the BMS box 5 and wiring harnesses. This not only significantly improves the assembly efficiency of the pack production line but also effectively optimizes the internal space layout, reduces the risk of wiring harness wear and loose connections caused by vibration, and provides a convenient disassembly channel for subsequent maintenance, significantly enhancing the overall reliability, safety, and maintainability of the battery pack.

[0096] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A battery pack internal support, characterized in that, include: First support (1); The second support (2) has its lower surface detachably mounted on the first support (1). The upper surface of the second support (2) and the upper surface of the first support (1) have a height difference, so that the first support (1) and the second support (2) form a stepped support structure.

2. The battery pack inner support according to claim 1, characterized in that, The second bracket (2) includes an integrally formed fixing part (21) and a positioning part (22); The upper surface of the fixing part (21) serves as the upper surface of the second bracket (2) and is detachably connected to the BMS box (5) inside the battery pack. The lower surface of the positioning part (22) serves as the lower surface of the second bracket (2) and is detachably mounted on the first bracket (1).

3. The battery pack inner support according to claim 2, characterized in that, The fixing part (21) is provided with a plurality of upwardly extending first mounting rods (23), and the BMS box (5) is provided with a plurality of mounting holes. The first mounting rods (23) cooperate with the mounting holes to fix the BMS box (5) on the fixing part (21).

4. The battery pack inner support according to claim 2, characterized in that, The positioning part (22) is provided with a plurality of first fixing holes (24), and the upper surface of the first bracket (1) is provided with a plurality of upwardly extending mounting posts (11). The mounting posts (11) cooperate with the first fixing holes (24) to fix the positioning part (22) on the first bracket (1).

5. The battery pack inner support according to claim 1, characterized in that, Also includes: At least one wire harness fixing bracket (4) is detachably mounted on the first bracket (1) and located on one side of the second bracket (2), and the wire harness fixing bracket (4) has a wire harness limiting channel inside.

6. The battery pack inner support according to claim 5, characterized in that, The wire harness fixing bracket (4) is a Z-shaped bracket, and the arched part of the Z-shaped bracket and the upper surface of the first bracket (1) together form the wire harness limiting channel.

7. The battery pack inner support according to claim 1, characterized in that, It also includes a third bracket (3), which includes an integrally formed connecting part (31) and a mounting part (32); The connecting part (31) is detachably mounted on the lower surface of the first bracket (1); The mounting part (32) extends out from both sides of the first bracket (1) and is detachably fixed to the vertical beam of the battery box.

8. The battery pack inner support according to claim 7, characterized in that, The connecting part (31) is provided with a plurality of upwardly extending second mounting rods (33), and the first bracket (1) is provided with a plurality of second fixing holes (12). The second mounting rods (33) cooperate with the second fixing holes (12) to fix the connecting part (31) to the lower surface of the first bracket (1).

9. A battery pack inner support according to claim 7, characterized in that, The lower surface of the first bracket (1) is provided with a downwardly extending box fixing structure (6), which is connected to the vertical beam of the battery box.

10. A battery pack, characterized in that, Including a battery pack internal support as described in any one of claims 1-9.

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