Hanging structure of battery pack and battery pack

Abstract

The utility model provides a mounting structure of a battery pack and the battery pack. The mounting structure of the battery pack comprises a bracket and a mounting sleeve, wherein the bracket and the mounting sleeve are arranged on a beam body of the battery pack; the support is provided with a main plate body fixedly connected to the battery pack beam body and a reinforcing plate body arranged on the main plate body, the reinforcing plate body and the main plate body are arranged at intervals in the thickness direction of the main plate body, and the hanging sleeve is provided with a connecting part connected with the hanging connecting piece and an extending end penetrating through a via hole in the battery pack beam body and extending into the battery pack beam body; and the end part of the reinforcing plate body, the end part of the main plate body and the hole wall of the via hole are welded and connected with the peripheral surface of the mounting sleeve. According to the mounting structure of the battery pack, the supporting capacity and the connecting strength of a mounting point of the battery pack can be improved, the cracking risk of welding seams near the mounting point due to stress concentration is reduced, and the mounting structure has a very good using effect.

Description

Technical Field

[0001] The utility model relates to the technical field of power batteries, and in particular to a mounting structure of a battery pack. The utility model also relates to a battery pack provided with the mounting structure of the battery pack. Background Art

[0002] The middle mounting point of the battery pack can improve the whole pack mode and increase the stiffness of the whole pack. Therefore, the middle mounting point and its connection design are very important, and it is necessary to consider many factors such as material selection, structural optimization and process refinement. Especially in the manufacturing process, production and testing must be carried out in strict accordance with quality standards to avoid quality problems and ensure product reliability and safety.

[0003] The design of the mounting point needs to consider the following aspects: First, structural strength. The middle mounting point and the crossbeam connected to it need to have sufficient strength to withstand the vibration and impact that the battery pack may encounter during vehicle driving. Insufficient strength may cause the battery pack structure to loosen or break, thus affecting the safety of the battery pack. Second, process feasibility. The design of the middle mounting point and its connection also needs to consider process feasibility. Excessive welding will affect the production yield of the battery pack.

[0004] At present, in the battery pack structure, the middle mounting point does not penetrate the battery pack. The bolts connect the battery pack from top to bottom of the vehicle and can only connect to the single-layer thin plate of the middle crossbeam of the battery pack. When the battery pack is subjected to vibration and impact tests or during use, the amplitude causes the middle crossbeam to generate large stress, which may even exceed the strength of the material itself and cause the risk of rupture, ultimately leading to failure of the battery pack structure. Utility Model Content

[0005] In view of this, the utility model aims to propose a mounting structure for a battery pack to enhance the supporting capacity of the mounting point and reduce the risk of cracking of the weld near the mounting point due to stress concentration.

[0006] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0007] A mounting structure for a battery pack, comprising a bracket and a mounting sleeve arranged on a beam body of the battery pack;

[0008] The bracket comprises a main board body fixedly connected to the battery pack beam body, and a reinforcing plate body arranged on the main board body, the reinforcing plate body and the main board body are arranged at a distance along the thickness direction of the main board body, and the mounting sleeve comprises a connecting portion connected to the mounting connector, and an extending end passing through a through hole on the battery pack beam body and extending into the battery pack beam body;

[0009] The end of the reinforcing plate body, the end of the main plate body and the hole wall of the through hole are all connected to the outer peripheral surface of the mounting sleeve by welding.

[0010] Furthermore, the main board body has a first end and a second end relative to each other, and the reinforcing plate body is arranged on the first end; in the projection on the upper end surface of the battery pack beam body, the ends of the main board body and the reinforcing plate body close to the mounting sleeve both have an arc segment, and straight line segments connecting the two ends of the arc segment.

[0011] Furthermore, the end edge of the second end away from the mounting sleeve is arc-shaped; and / or the length c of the straight line segment is consistent with the wall thickness of the battery pack beam body.

[0012] Furthermore, the width of the bracket is the same as the outer diameter of the mounting sleeve, and both are d; on the symmetry plane of the bracket, the distance m between the symmetry point of the arc segment and the edge of the second end satisfies: m=2d; wherein d is between 0.8mm-1.0mm.

[0013] Furthermore, the thickness of the reinforcing plate and the main board are both a; the minimum distance n between the reinforcing plate and the main board satisfies: a≤n≤3a; and / or, the brackets are two symmetrically arranged about the mounting sleeve, and each of the brackets is arranged along the length direction of the battery pack beam.

[0014] Furthermore, the second end is welded to the battery pack beam body; a reinforcing rib is provided on the second end, the reinforcing rib extends along the length direction of the battery pack beam body, and is connected to the reinforcing plate body, and is arranged to reduce the cross-sectional area of ​​the reinforcing rib in the direction pointing from the first end to the second end.

[0015] Furthermore, the thickness e of the reinforcing rib and the thickness a of the main board body satisfy: e=2a.

[0016] Furthermore, a fixing hole is provided on the second end; the main board body is screwed to the battery pack beam body via a threaded connector passing through the fixing hole.

[0017] Furthermore, the width of the bracket is d; and the distance between the central axis of the fixing hole and the end of the bracket away from the mounting sleeve is between 0.4d and 0.6d.

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

[0019] The mounting structure of the battery pack described in the present invention is characterized by the provision of a bracket, and the ends of the main board body and the reinforcing plate body of the bracket and the hole walls of the through holes on the battery pack beam body are welded and connected to the outer peripheral surface of the mounting sleeve. In this way, the supporting capacity and connection strength of the battery pack mounting point can be improved, the risk of cracking of the weld near the mounting point due to stress concentration can be reduced, and a good use effect can be achieved.

[0020] In addition, the arc-shaped segments provided at the ends of the main body and the reinforcing plate body close to the mounting sleeve are conducive to the fitting of the main body and the reinforcing plate body with the outer peripheral surface of the mounting sleeve, and the straight segments provided at both ends of the arc-shaped segments, compared with the structure with sharp angles at the ends, can effectively avoid stress concentration during bracket welding and avoid bracket tearing. The edge of the end away from the mounting sleeve at the second end is arc-shaped, which can avoid stress concentration when welding with the battery pack beam body. The limitation of the width of the bracket and the limitation of the distance between the symmetry point of the arc-shaped segment and the edge of the second end can ensure sufficient support capacity while ensuring that the bracket does not interfere with the internal structure layout of the battery pack after installation, and can also avoid excessive thermal influence of the material caused by welding, which affects the material strength and surface shape.

[0021] Secondly, setting the length of the straight segment to be consistent with the wall thickness of the battery pack beam can further effectively avoid stress concentration in the bracket and prevent the bracket from tearing. Strengthening the setting of the minimum distance between the plate body and the column plate body is conducive to ensuring sufficient support on the one hand, and facilitating welding operations on the other hand to ensure welding quality. Setting two brackets symmetrically arranged about the mounting sleeve can further enhance the supporting effect of the mounting sleeve, that is, further enhance the supporting effect of the mounting point, and further reduce the risk of cracking of the weld near the mounting point due to stress concentration.

[0022] Furthermore, the second end is connected to the battery beam by welding, which can ensure the reliability of the connection between the main board and the battery beam. The design of the reinforcing ribs can reduce the use of materials and the deformation of the bracket caused by excessive welding, and is also conducive to ensuring the connection strength of the mounting sleeve.

[0023] In addition, the main board body is provided with a fixing hole, and the main board body is screwed to the battery pack beam body through a threaded connector inserted in the fixing hole. Such a connection using a threaded connector can not only ensure the connection strength between the mounting sleeve and the battery pack beam body, but also reduce the deformation caused by excessive welding. The position of the fixing hole is limited, which can further ensure the connection reliability between the bracket and the battery pack beam body, that is, it can further ensure the connection reliability between the mounting sleeve and the battery pack beam body.

[0024] Another object of the present invention is to provide a battery pack, in which the battery pack is provided with a mounting structure for the battery pack as described above, wherein the mounting structures are multiple and spaced apart along the length direction of the battery pack beam, and the battery pack beam is a shell side beam and / or a middle cross beam.

[0025] The battery pack of the utility model, by adopting the battery pack mounting structure as described above, can enhance the support capacity and connection strength of the battery pack mounting point, reduce the risk of failure of the battery pack mounting point during testing and use, and thus help improve the performance of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0027] Figure 1 A three-dimensional diagram of a first structure of a mounting structure for a battery pack according to an embodiment of the present utility model;

[0028] Figure 2 A front view of a first structure of a mounting structure for a battery pack according to an embodiment of the present utility model;

[0029] Figure 3 It is a right side view of the first structure of the mounting structure of the battery pack according to the embodiment of the utility model;

[0030] Figure 4 This is a schematic structural diagram of the bracket according to an embodiment of the utility model from a first viewing angle;

[0031] Figure 5 A schematic structural diagram of the bracket according to an embodiment of the utility model from a second viewing angle;

[0032] Figure 6 A front view of a second structure of the mounting structure of the battery pack according to an embodiment of the present utility model;

[0033] Figure 7 A top view of a second structure of the mounting structure of the battery pack according to an embodiment of the present utility model;

[0034] Description of reference numerals:

[0035] 1. Bracket; 11. Main board; 12. Reinforcement board; 13. Reinforcement ribs;

[0036] 2. Mounting sleeve; 21. Connecting portion; 22. Insertion end; 23. Mounting slot;

[0037] 3. Threaded connector; 10. First end; 20. Second end. DETAILED DESCRIPTION

[0038] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0039] In the description of the present invention, it should be noted that if there are terms such as "upper", "lower", "inner", "outer" and the like indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, if there are terms such as "first" and "second", they are also used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0040] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection" and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0041] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0042] Embodiment 1

[0043] The present embodiment relates to a mounting structure of a battery pack, which can improve the supporting capacity of the mounting point and reduce the risk of cracking of the weld near the mounting point due to stress concentration.

[0044] In terms of overall structure, Figures 1 to 3 As shown, the mounting structure of the battery pack of this embodiment (the mounting structure will be examined below) includes a bracket 1 and a mounting sleeve provided on the battery pack beam body. The bracket 1 has a main board body 11 fixedly connected to the battery pack beam body, and a reinforcing plate body 12 provided on the main board body 11, and the reinforcing plate body 12 and the main board body 11 are spaced apart in the thickness direction of the main board body 11.

[0045] The mounting sleeve has a connection portion 21 connected to the mounting connector, and an insertion end 22 that passes through the through hole on the battery pack beam and extends into the battery pack beam. In addition, the end of the reinforcing plate 12, the end of the main plate 11, and the hole wall of the through hole are all welded to the outer circumference of the mounting sleeve.

[0046] At this time, in the structure of the bracket 1, a spacing is set between the main board body 11 and the reinforcing plate body 12 along the thickness direction of the main board body 11, and the ends of the main board body 11, the ends of the reinforcing plate body 12 and the hole walls of the through holes (i.e., the battery pack beam body) are welded and connected to the outer peripheral surface of the mounting sleeve 2, thereby improving the supporting capacity and connection strength of the mounting sleeve 2, that is, improving the supporting capacity and connection strength of the battery pack mounting point, and reducing the risk of cracking of the weld near the mounting point due to stress concentration.

[0047] It is worth noting that, in this embodiment, the connection portion 21 on the mounting sleeve is used to connect with the mounting connector, such as a connecting bolt that passes through the vehicle body (or vibration test device) and the upper cover of the battery pack. The connection portion 21 is preferably a threaded hole. In a specific implementation, the connecting bolt is screwed into the threaded hole on the mounting sleeve, so that the battery pack can be more firmly connected to the vehicle body (or vibration test device). In addition, it is also worth noting that the battery pack beam body of this embodiment is preferably the middle cross beam of the battery pack, and the middle cross beam is preferably made of thin plate steel rolled, and the thickness a of the thin plate steel is usually 2 mm.

[0048] Based on the above overall structure, in detail, as an exemplary structure, see Figures 1 to 5 As shown, in this embodiment, the bracket 1 includes a main board body 11 fixedly connected to the battery pack beam body, and a reinforcing plate body 12 arranged on the main board body 11. As a preferred embodiment, in this embodiment, the main board body 11 has a first end 10 and a second end 20 opposite to each other, and the reinforcing plate body 12 is arranged on the first end 10. The reinforcing plate body 12 is integrally formed on the first end 10 of the main board body 11 through a vertical connection plate body, and the reinforcing plate body 12 and the main board body 11 bracket 1 are spaced apart in the thickness direction of the main board body 11. Moreover, in the projection on the upper end surface of the battery pack beam body, the ends of the main board body 11 and the reinforcing plate body 12 close to the mounting sleeve 2 both have an arc segment, and straight line segments connected at both ends of the arc segment.

[0049] The setting of the arc segment is beneficial to the fit between the main board body 11 and the outer peripheral surface of the mounting sleeve 2, and the strengthening plate body 12 and the outer peripheral surface of the mounting sleeve 2, and the straight line segments arranged at both ends of the arc segment, which are sharp-angled structures compared to this position, can effectively avoid stress concentration during welding of the bracket 1 and avoid tearing of the bracket 1.

[0050] Based on the above structural arrangement, as a preferred implementation, in this embodiment, the edge of the end of the second end 20 away from the mounting sleeve is arc-shaped, so that stress concentration can be avoided when the second end 20 is welded to the battery pack beam.

[0051] See also Figure 2 and Figure 5As shown, in this embodiment, as a preferred embodiment, the width of the bracket 1 is the same as the outer diameter of the mounting sleeve, and both are d. In addition, on the symmetry plane of the bracket 1, the distance m between the symmetry point of the arc segment and the edge of the second end 20 satisfies: m=2d. Among them, the dimension d is between 0.8mm-1.0mm. The distance m is also the length of the bracket 1, and in the specific implementation, the dimension d can be set to 0.8mm, 0.9mm or 1.0mm, for example.

[0052] By limiting the length and width of the bracket 1, the bracket 1 can be installed without interfering with the internal structure of the battery pack while ensuring sufficient support capacity. It can also avoid excessive heat impact on the material caused by welding, which affects the material strength and surface shape. In addition, the length direction of the bracket 1 is consistent with the length direction of the battery pack beam. In this way, through the arrangement position of the bracket 1, the mounting sleeve 2 can reduce the stress on the mounting point welding area while ensuring installation reliability, thereby reducing the risk of mounting point failure.

[0053] In addition, continue to see Figure 2 and Figure 5 As shown, in this embodiment, the length c of the straight line segment is consistent with the wall thickness of the battery pack beam. Such a setting can further effectively avoid stress concentration of the bracket 1 and avoid the bracket 1 from tearing.

[0054] Also as a preferred embodiment, see Figure 3 As shown, in this embodiment, the thickness of the reinforcing plate 12 and the main plate 11 are both a, and the minimum distance n between the reinforcing plate 12 and the main plate 11 satisfies: a≤n≤3a. In specific implementation, the distance n can be set to a, 2a or 3a, etc., and is preferably set to 2a. At this time, the setting of the minimum distance between the reinforcing plate 12 and the column plate is conducive to ensuring sufficient support on the one hand, and is convenient for welding operation and ensuring welding quality on the other hand.

[0055] In addition, in this embodiment, there are two brackets 1 arranged symmetrically about the mounting sleeve 2, and each bracket 1 is arranged along the length direction of the battery pack beam. At this time, the arc-shaped connecting end faces of the first ends 10 on the two brackets 1 are relatively fitted on the outer peripheral surface of the mounting sleeve 2, and the two arc-shaped connecting end faces and the battery pack beam at the through-hole position are welded to the outer peripheral surface of the mounting sleeve 2. This can further improve the supporting role of the mounting sleeve 2, that is, further improve the supporting role of the mounting point, and further reduce the risk of cracking of the weld near the mounting point due to stress concentration.

[0056] In addition, in this embodiment, as a preferred implementation, the second end 20 of the main board body 11 is welded to the battery pack beam body. This can improve the reliability of the connection between the main board body 11 and the battery pack beam body. In addition, a reinforcing rib 13 is also provided on the second end 20. The reinforcing rib 13 extends along the length direction of the battery pack beam body and is connected to the reinforcing plate body 12. The cross-sectional area of ​​the reinforcing rib 13 is reduced in the direction from the first end 10 to the second end 20. The design of this reinforcing rib 13 can reduce the use of materials while reducing the deformation of the bracket 1 caused by excessive welding, and is also conducive to ensuring the connection strength of the mounting sleeve 2.

[0057] Specifically, in this embodiment, as a further preferred implementation, the thickness e of the reinforcing rib 13 satisfies the thickness a of the main body 11: e=2a. In this way, while avoiding the waste of material due to excessive thickness of the reinforcing rib 13, the overall structure of the bracket can also be ensured to have sufficient strength.

[0058] In this embodiment, Figure 6 and Figure 7 Another mounting structure is shown in the example. Figures 1 to 5 The mounting structures shown are generally the same, except that Figure 6 and Figure 7 In the structure shown in , the second end 20 is fixed to the battery pack beam body by screw connection, and the second end 20 is not provided with a reinforcing rib 13.

[0059] Specifically, a fixing hole is provided on the second end 20, that is, a fixing hole is provided on the end of the main board body 11 away from the mounting sleeve 2. The main board body 11 is screwed to the battery pack beam body through a threaded connector 3 inserted into the fixing hole. The threaded connector 3 is, for example, a bolt, which is installed from the inside of the battery pack beam body, and the threaded portion extends to the outside of the battery pack beam body and passes through the fixing hole on the second end 20, and then the second end 20 is fastened to the battery pack beam body by the fastening nut at the end of the bolt. The main board body 11 is connected to the battery pack beam body by screwing, which can not only ensure the connection strength between the mounting sleeve 2 and the battery pack beam body, but also reduce the deformation caused by excessive welding.

[0060] Still viewing Figure 6 and Figure 7As shown, in this embodiment, the width of the bracket 1 is the same as described above, that is, d. The distance k between the central axis of the fixing hole and the end of the bracket 1 away from the mounting sleeve is between 0.4d-0.6d. Among them, similarly, the dimension d is between 0.8mm-1.0mm, and in the specific implementation, the dimension d can be set to 0.8mm, 0.9mm or 1.0mm, etc., and the distance k can be set to 0.4d, 0.5d or 0.6d, and is preferably set to 0.5d. At this time, by limiting the position of the fixing hole, the connection reliability between the bracket 1 and the battery pack beam body can be further guaranteed, that is, the connection reliability between the mounting sleeve 2 and the battery pack beam body can be further guaranteed.

[0061] In addition, it should be noted that the main plate body 11 and the reinforcing plate body 12 are roughly located in the middle position along the height of the mounting sleeve 2. In this way, on the one hand, it can avoid the insertion end 22 being too short, which will cause excessive bending moment and make the weld easily subjected to excessive stress. On the other hand, it can avoid the insertion end 22 being too long, which will cause material waste or be unfavorable for the sealing of the battery pack cover.

[0062] In addition, in the mounting sleeve 2 of this embodiment, the axial length of the internal threaded hole is smaller than the axial length of the mounting sleeve 2, that is, the internal threaded hole is not a blind hole. In addition, a mounting groove 23 is provided around the internal threaded hole at the end of the mounting sleeve 2 to facilitate the installation of the seal, thereby ensuring the sealing performance of the connection between the mounting sleeve 2 and the upper cover of the battery pack.

[0063] When installing the mounting structure of this embodiment, firstly, two opposite brackets 1 and mounting sleeves 2 are pre-welded to form an assembly, preferably two reinforcing plates 12 and mounting sleeves 2 are pre-welded to form an assembly, and then the assembly is installed on the battery pack beam body, so that the insertion end 22 of the mounting sleeve 2 passes through the through hole on the battery pack beam body and extends to the inside of the battery pack beam body. Next, the end of the main body 11, the hole wall of the through hole and the outer peripheral surface of the mounting sleeve 2 are welded together, thereby completing the installation of the mounting structure.

[0064] The mounting structure of the battery pack of this embodiment can improve the supporting capacity and connection strength of the mounting point of the battery pack, reduce the risk of cracking of the weld near the mounting point due to stress concentration, and has a good use effect.

[0065] Embodiment 2

[0066] This embodiment relates to a battery pack, which is provided with the mounting structure of the battery pack described in Embodiment 1. The battery pack beam body may be a shell side beam or a middle cross beam, or a shell side beam and a middle cross beam, that is, the mounting structure may be provided only on the shell side beam, or only on the middle cross beam, or on both the shell side beam and the middle cross beam.

[0067] In addition, as a preferred embodiment, in this embodiment, the mounting structure is a plurality of mounting structures arranged at intervals along the length direction of the battery pack beam body, so as to further ensure the structural stability of the battery pack mounting, thereby improving the overall structural strength of the battery pack.

[0068] The battery pack of this embodiment, by adopting the mounting structure of the battery pack of embodiment one, can enhance the support capacity and connection strength of the battery pack mounting point, reduce the risk of failure of the battery pack mounting point during testing and use, and thus help improve the performance of the battery pack.

[0069] 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 mounting structure for a battery pack, characterized in that: It includes a bracket and a mounting sleeve arranged on the battery pack beam body; The bracket comprises a main board body fixedly connected to the battery pack beam body, and a reinforcing plate body arranged on the main board body, the reinforcing plate body and the main board body are arranged at a distance along the thickness direction of the main board body, and the mounting sleeve comprises a connecting portion connected to the mounting connector, and an extending end passing through a through hole on the battery pack beam body and extending into the battery pack beam body; The end of the reinforcing plate body, the end of the main plate body and the hole wall of the through hole are all connected to the outer peripheral surface of the mounting sleeve by welding.

2. The mounting structure of the battery pack according to claim 1, characterized in that: The main plate body has a first end and a second end opposite to each other, and the reinforcing plate body is arranged on the first end; In the projection on the upper end surface of the battery pack beam body, the ends of the main plate body and the reinforcing plate body close to the mounting sleeve both have an arc segment and straight line segments connecting the two ends of the arc segment.

3. The mounting structure of the battery pack according to claim 2, characterized in that: The end edge of the second end away from the mounting sleeve is arc-shaped; and / or the length c of the straight line segment is consistent with the wall thickness of the battery pack beam body.

4. The mounting structure of the battery pack according to claim 2, characterized in that: The width of the bracket is the same as the outer diameter of the mounting sleeve, and both are d; On the symmetry plane of the bracket, the distance m between the symmetry point of the arc segment and the edge of the second end satisfies: m=2d; Among them, d is between 0.8mm-1.0mm.

5. The mounting structure of the battery pack according to claim 2, characterized in that: The thickness of the reinforcing plate and the main plate are both a, and the minimum distance n between the reinforcing plate and the main plate satisfies: a≤n≤3a; and / or, The brackets are two and are symmetrically arranged about the mounting sleeve, and each of the brackets is arranged along the length direction of the battery pack beam.

6. The mounting structure of the battery pack according to any one of claims 2 to 5, characterized in that: The second end is welded to the battery pack beam body; A reinforcing rib is provided on the second end, the reinforcing rib extends along the length direction of the battery pack beam body, is connected to the reinforcing plate body, and is arranged in a direction from the first end to the second end, with the cross-sectional area of ​​the reinforcing rib being reduced.

7. The mounting structure of the battery pack according to claim 6, characterized in that: The thickness e of the reinforcing rib and the thickness a of the main board body satisfy: e=2a.

8. The mounting structure of the battery pack according to any one of claims 2 to 5, characterized in that: The second end is provided with a fixing hole; The main board body is screwed to the battery pack beam body through a threaded connector inserted into the fixing hole.

9. The mounting structure of the battery pack according to claim 8, characterized in that: The width of the bracket is d; A distance k between a central axis of the fixing hole and an end of the bracket away from the mounting sleeve is between 0.4d and 0.6d.

10. A battery pack, characterized in that: The battery pack is provided with a mounting structure for the battery pack according to any one of claims 1 to 9; The mounting structures are multiple and spaced apart along the length direction of the battery pack beam body, and the battery pack beam body is a shell side beam and / or a middle cross beam.

Images