Quickly detachable intermediate mounting structure, battery pack and automobile

Abstract

The utility model provides a kind of middle mounting structure of quick disassembly, battery pack and car, it is related to battery pack technical field, the middle mounting structure includes screw rod, nut, sealing ring and support;Screw rod includes the connecting section, bearing section and installation section set gradually;Connecting section is equipped with connecting part;Bearing section includes bearing ring, bearing ring is close to the setting of connecting section, and top surface is equipped with ring groove;Installation section passes through support, and the end away from bearing ring is detachably connected with the bottom box of battery pack;Nut is connected with connecting section, and the installation space of the upper cover of battery pack is formed between the bottom surface of nut and the top surface of bearing ring;Sealing ring is installed in ring groove;Support is connected with bottom box, and the top surface of support is equipped with annular protrusion, when installation section is tightened with bottom box, the top surface of annular protrusion is attached to the bottom surface of bearing ring.The middle mounting structure realizes the sealing connection of upper cover and bottom box and the connection of battery pack and frame, simple structure, reduces the number of parts, improves assembly efficiency.

Description

Technical Field

[0001] This utility model relates to the field of battery pack technology, and in particular to a quick-detachable intermediate mounting structure, a battery pack, and an automobile. Background Technology

[0002] The battery pack is the carrier that provides power to new energy vehicles. Its safety directly affects passenger safety and is a core concern for consumers, as well as a key technology that new energy battery manufacturers and vehicle manufacturers are focusing on overcoming. The battery pack mainly consists of multiple individual cells grouped together and interconnected with electrical components to form a circuit. Water ingress into the battery pack can cause a short circuit, leading to a fire or even an explosion, resulting in serious safety accidents and economic losses. Currently, some battery packs on the market lack a central mounting structure. To ensure structural strength, numerous transverse and longitudinal reinforcing beams are added, resulting in a heavy battery pack frame structure.

[0003] To address the above issues, the existing utility model patent with patent publication number CN219643015U discloses a battery pack intermediate mounting point sleeve. This sleeve directly connects the upper bolt sleeve to the intermediate long sleeve via threads, reducing the need for intermediate bushings. It utilizes the cover of the battery pack housing and employs a stacking and pressing method to give it the function of a sealing gasket. However, this sleeve-type structure occupies internal space in the battery pack, has numerous and complex intermediate fixing structures, low bonding efficiency, many parts, and low assembly efficiency. Utility Model Content

[0004] In view of this, the present invention proposes a quick-detachable intermediate mounting structure, a battery pack, and a vehicle to solve the technical problems mentioned in the background art, such as the sleeve-type structure occupying the internal space of the battery pack, the numerous and complex intermediate fixing structures, low bonding efficiency, many parts, and low assembly efficiency.

[0005] The technical solution of this utility model is implemented as follows: In a first aspect, this utility model provides a quick-detachable intermediate mounting structure, including a screw, a nut, a sealing ring, and a bracket, wherein: The screw includes a connecting section, a bearing section, and a mounting section arranged sequentially; the connecting section has a connecting part for detachably connecting to the vehicle frame; the bearing section includes a bearing ring, which is located close to the connecting section and has a ring groove on its top surface; the mounting section passes through the bracket and is detachably connected to the bottom box of the battery pack at one end away from the bearing ring. The nut is connected to the connecting section, and the bottom surface of the nut and the top surface of the bearing ring form an installation space for the upper cover of the battery pack. The sealing ring is installed in the annular groove; The bracket is connected to the base box. The top surface of the bracket is provided with an annular protrusion. When the mounting section is tightened to the base box, the top surface of the annular protrusion is in contact with the bottom surface of the bearing ring.

[0006] Based on the above technical solutions, preferably, the bearing section further includes a positioning part, which is located at the end of the bearing ring away from the connecting section; the bracket is provided with a limiting hole, which is clearance-fitted with the positioning part.

[0007] Based on the above technical solutions, preferably, the connecting section is provided with a first external thread; the nut is provided with a first threaded hole that matches the first external thread.

[0008] Based on the above technical solutions, preferably, the nut includes a threaded body and a pressure ring. The threaded body is hexagonal, and the first threaded hole is provided on the threaded body. The pressure ring is located on the outer wall of the threaded body and abuts against and presses against the upper cover.

[0009] Based on the above technical solutions, preferably, the connecting part is a second threaded hole provided along the axial direction of the connecting segment.

[0010] Based on the above technical solutions, preferably, the bracket includes a bracket body and two ear seats, the two ear seats are symmetrically arranged on the side of the bracket body, and the ear seats are provided with mounting holes for bolts to pass through and connect to the base box.

[0011] Based on the above technical solutions, preferably, the bracket further includes a reinforcing rib, which is located between the ear base and the bracket body.

[0012] Based on the above technical solutions, preferably, the end of the mounting section away from the bearing section is provided with a second external thread, which is used to connect the bottom box of the battery pack.

[0013] Secondly, this utility model also proposes a battery pack, including a base box and a top cover, as well as a quick-detachable intermediate mounting structure as described in the first aspect, wherein the base box is connected to the mounting section, and the top cover is installed in the mounting space between the bottom surface of the nut and the top surface of the bearing ring.

[0014] Thirdly, this utility model also proposes an automobile including a battery pack as described in the second aspect.

[0015] The quick-detachable intermediate mounting structure of this utility model has the following advantages over the prior art: (1) The screw includes a connecting section, a bearing section and an mounting section arranged in sequence. The connecting section is provided with a connecting part for detachably connecting the vehicle frame. The bearing section includes a bearing ring. The mounting section passes through the bracket and is detachably connected to the bottom box of the battery pack at one end away from the bearing ring. The nut is connected to the connecting section. The bottom surface of the nut and the top surface of the bearing ring form an installation space for mounting the top cover of the battery pack, realizing the sealed connection between the top cover and the bottom box and the connection between the battery pack and the frame. The structure is simple, the number of parts is reduced, and the assembly efficiency is improved. When the mounting section is tightened with the bottom box, the top surface of the annular protrusion is in contact with the bottom surface of the bearing ring, which can effectively support the intermediate mounting structure and prevent the threads on the screw from being damaged by the force when stepped on, thereby ensuring the reliability of the connection between the intermediate mounting structure and the battery pack. (2) A positioning part is provided at one end of the bearing ring away from the connecting section, and a limiting hole is provided on the bracket. The limiting hole and the positioning part are clearance-fitted to ensure that the screw can be installed accurately, thereby improving the assembly convenience and reliability. (3) The nut includes a threaded body and a pressure ring. The threaded body is hexagonal, and the first threaded hole is provided on the threaded body. The pressure ring is located on the outer wall of the threaded body and presses against the upper cover to increase the contact area with the upper cover, avoid the contact area being too small so that the hole on the upper cover is pulled by shear force, and can be subjected to force together with the threaded body to improve the load-bearing capacity and improve the reliability of the connection. (4) The connecting part is a second threaded hole provided along the axis of the connecting section, which facilitates the detachable connection with the frame, improves the convenience of assembly, and can be connected by bolts without the need for additional connecting structure, thus reducing the number of parts. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the quick-detachable intermediate mounting structure of this utility model; Figure 2 This is a cross-sectional view of the quick-detachable intermediate mounting structure of this utility model; Figure 3 This utility model Figure 2 Enlarged view of part A in the middle; Figure 4This is an exploded view of the quick-detachable intermediate mounting structure of this utility model; Figure 5 This is a schematic diagram of the screw structure of this utility model; Figure 6 This is a schematic diagram of the structure of the nut of this utility model; Figure 7 This is a schematic diagram of the structure of the bracket of this utility model.

[0018] Explanation of reference numerals in the attached diagram: 1-Screw, 2-Nut, 3-Sealing ring, 4-Bracket; 100 - Installation space; 11-Connecting section, 111-Connecting part, 112-First external thread; 12-Bearing section, 121-Bearing ring, 1211-Ring groove, 122-Positioning part, 13-Mounting section, 131-Second external thread; 21-Threaded body, 211-First threaded hole, 22-Pressure ring; 41-Bracket body, 411-Annular protrusion, 412-Limiting hole, 42-Ear seat, 421-Mounting hole, 43-Reinforcing rib. Detailed Implementation

[0019] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0020] Reference Figures 1-7 As shown, in the first aspect of this utility model, a quick-detachable intermediate mounting structure is proposed, including a screw 1, a nut 2, a sealing ring 3, and a bracket 4, wherein: The screw 1 includes a connecting section 11, a bearing section 12, and a mounting section 13 arranged sequentially. The connecting section 11 has a connecting part 111 for detachably connecting to the vehicle frame. The bearing section 12 includes a bearing ring 121, which is located close to the connecting section 11 and has a ring groove 1211 on its top surface. The mounting section 13 passes through the bracket 4, and its end away from the bearing ring 121 is detachably connected to the bottom box of the battery pack. The nut 2 is connected to the connecting section 11, and the bottom surface of the nut 2 and the top surface of the bearing ring 121 form an installation space 100 for installing the upper cover of the battery pack; after the upper cover is placed on the top surface of the bearing ring 121, the nut 2 is used to connect and lock the connecting section 11, so that the upper cover and the sealing ring 3 fit tightly together, and the upper cover and the bottom box are sealed together at the screw 1. The sealing ring 3 is installed in the annular groove 1211; The bracket 4 is connected to the base box. The top surface of the bracket 4 is provided with an annular protrusion 411. When the mounting section 13 is tightened with the base box, the top surface of the annular protrusion 411 is in contact with the bottom surface of the bearing ring 121.

[0021] The quick-detachable intermediate mounting structure proposed in this embodiment includes a connecting section 11, a bearing section 12, and a mounting section 13 arranged sequentially on the screw 1. The connecting section 11 has a connecting part 111 for detachably connecting to the vehicle frame. The bearing section 12 includes a bearing ring 121. The mounting section 13 passes through the bracket 4, and its end away from the bearing ring 121 is detachably connected to the bottom box of the battery pack. The nut 2 is connected to the connecting section 11, and the bottom surface of the nut 2 and the top surface of the bearing ring 121 form an installation space 100 for mounting the top cover of the battery pack, realizing a sealed connection between the top cover and the bottom box, as well as a connection between the battery pack and the frame. The structure is simple, reduces the number of parts, and improves assembly efficiency. When the mounting section 13 is tightened to the bottom box, the top surface of the annular protrusion 411 fits against the bottom surface of the bearing ring 121, which can effectively support the intermediate mounting structure and prevent the threads on the screw 1 from being damaged by stress when stepped on, thereby ensuring the reliability of the connection between the intermediate mounting structure and the battery pack.

[0022] In some embodiments, the bearing section 12 further includes a positioning part 122, which is located at the end of the bearing ring 121 away from the connecting section 11; the bracket 4 is provided with a limiting hole 412, which is clearance-fitted with the positioning part 122. The clearance fit between the limiting hole 412 and the positioning part 122 ensures that the screw 1 can be accurately installed, improving assembly convenience and reliability.

[0023] In some embodiments, the connecting segment 11 is provided with a first external thread 112; the nut 2 is provided with a first threaded hole 211 that matches the first external thread 112. The first external thread 112 is connected to the internal thread of the first threaded hole 211, so as to realize the detachable connection between the nut 2 and the connecting segment 11, which is convenient and reliable and improves assembly efficiency.

[0024] In some embodiments, the nut 2 includes a threaded body 21 and a pressure ring 22. The threaded body 21 is hexagonal, and the first threaded hole 211 is disposed on the threaded body 21. The pressure ring 22 is located on the outer wall of the threaded body 21 and abuts against and presses against the upper cover. The pressure ring 22 increases the contact area with the upper cover, avoiding the hole on the upper cover being pulled by shear force due to an insufficient contact area. It can also share the force with the threaded body 21, improving the load-bearing capacity and the reliability of the connection.

[0025] In some embodiments, the connecting portion 111 is a second threaded hole provided along the axial direction of the connecting segment 11. The second threaded hole in the connecting portion 111 facilitates detachable connection with the frame, improving assembly convenience. Bolt connection is sufficient, eliminating the need for additional connection structures and reducing the number of parts.

[0026] In some embodiments, the bracket 4 includes a bracket body 41 and two lugs 42. The two lugs 42 are symmetrically arranged on the side of the bracket body 41. Each lug 42 has a mounting hole 421 for bolts to pass through and connect to the base box. An annular protrusion 411 and a limiting hole 412 are provided on the bracket body 41. One of the mounting holes 421 on the two lugs 42 is a round hole, and the other is an oblong hole, which can tolerate a certain hole position error, making installation more convenient. By passing bolts through the mounting holes 421 and connecting them with the threaded holes on the base box, the bracket 4 can be fixed, and the bracket 4 and the base box can be stressed together, improving the load-bearing capacity.

[0027] In some embodiments, the bracket 4 further includes reinforcing ribs 43 located between the ear base 42 and the bracket body 41. The two reinforcing ribs 43 are symmetrically arranged, and their function is to enhance the structural strength of the bracket 4, ensuring effective and reliable support.

[0028] In some embodiments, the end of the mounting section 13 away from the bearing section 12 is provided with a second external thread 131, which is used to connect to the bottom box of the battery pack. By connecting to the bottom box through the second external thread 131, a detachable connection between the screw 1 and the bottom box is achieved, improving assembly convenience.

[0029] The working principle of this quick-detachable intermediate mounting structure is as follows: A bolt passes through the mounting hole 421 and connects to the threaded hole on the base box, fixing the bracket 4 to the base box. The mounting section 13 of the screw 1 passes through the bracket 4 and connects to the base box via the second external thread 131. After the top cover is placed on the top surface of the bearing ring 121, the nut 2 is used to connect and lock with the first external thread 112 of the connecting section 11, ensuring a tight fit between the top cover and the sealing ring 3, achieving a sealed connection between the top cover and the base box at the screw 1. The second threaded hole is connected to the frame via bolts, connecting the battery pack to the frame. The structure is simple, reducing the number of parts and improving assembly efficiency. When the mounting section 13 is tightened to the base box, the top surface of the annular protrusion 411 fits against the bottom surface of the bearing ring 121, effectively supporting the intermediate mounting structure and preventing damage to the threads on the screw 1 when stepped on, thus ensuring the reliability of the connection between the intermediate mounting structure and the battery pack.

[0030] Based on the same concept, a second aspect of this utility model proposes a battery pack, including a base box and a top cover, as well as a quick-detachable intermediate mounting structure as described in the first aspect embodiment. The base box is connected to the mounting section 13, and the top cover is mounted in the mounting space 100 between the bottom surface of the nut 2 and the top surface of the bearing ring 121.

[0031] The battery pack proposed in this embodiment has a connecting part 111 for detachably connecting to the vehicle frame via the connecting section 11. The bearing section 12 includes a bearing ring 121. The mounting section 13 passes through the bracket 4 and is detachably connected to the bottom box of the battery pack at one end away from the bearing ring 121. The nut 2 is connected to the connecting section 11. The bottom surface of the nut 2 and the top surface of the bearing ring 121 form an mounting space 100 for mounting the top cover of the battery pack, realizing a sealed connection between the top cover and the bottom box and a connection between the battery pack and the vehicle frame. The structure is simple, the number of parts is reduced, and the assembly efficiency is improved.

[0032] Based on the same concept, a third aspect of this utility model proposes an automobile including a battery pack as described in the second aspect embodiment.

[0033] The vehicle proposed in this embodiment has a battery pack with a well-sealed top cover and bottom box, which prevents water from entering due to poor sealing, thus avoiding short circuits, fires, or even explosions, improving safety and avoiding economic losses.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A quick-detachable intermediate mounting structure, characterized in that, Includes a screw (1), a nut (2), a sealing ring (3), and a bracket (4), wherein: The screw (1) includes a connecting section (11), a bearing section (12), and a mounting section (13) arranged sequentially; the connecting section (11) is provided with a connecting part (111), which is used to detachably connect to the vehicle frame; the bearing section (12) includes a bearing ring (121), which is located close to the connecting section (11) and has a ring groove (1211) on its top surface; the mounting section (13) passes through the bracket (4), and one end away from the bearing ring (121) is detachably connected to the bottom box of the battery pack; The nut (2) is connected to the connecting section (11), and the bottom surface of the nut (2) and the top surface of the bearing ring (121) form an installation space (100) for installing the top cover of the battery pack. The sealing ring (3) is installed in the annular groove (1211); The bracket (4) is connected to the base box. The top surface of the bracket (4) is provided with an annular protrusion (411). When the mounting section (13) is tightened with the base box, the top surface of the annular protrusion (411) is attached to the bottom surface of the bearing ring (121).

2. The quick-detachable intermediate mounting structure as described in claim 1, characterized in that, The bearing section (12) further includes a positioning part (122), which is located at one end of the bearing ring (121) away from the connecting section (11); the bracket (4) is provided with a limiting hole (412), which is clearance-fitted with the positioning part (122).

3. The quick-detachable intermediate mounting structure as described in claim 1, characterized in that, The connecting section (11) is provided with a first external thread (112); the nut (2) is provided with a first threaded hole (211) that matches the first external thread (112).

4. The quick-detachable intermediate mounting structure as described in claim 3, characterized in that, The nut (2) includes a threaded body (21) and a pressure ring (22). The threaded body (21) is hexagonal, and the first threaded hole (211) is provided on the threaded body (21). The pressure ring (22) is located on the outer wall of the threaded body (21) and presses against the upper cover.

5. The quick-detachable intermediate mounting structure as described in claim 1, characterized in that, The connecting part (111) is a second threaded hole provided along the axial direction of the connecting segment (11).

6. The quick-detachable intermediate mounting structure as described in claim 1, characterized in that, The bracket (4) includes a bracket body (41) and two ear seats (42). The two ear seats (42) are symmetrically arranged on the side of the bracket body (41). The ear seats (42) are provided with mounting holes (421) for bolts to pass through and connect to the base box.

7. The quick-detachable intermediate mounting structure as described in claim 6, characterized in that, The bracket (4) also includes a reinforcing rib (43) located between the ear seat (42) and the bracket body (41).

8. The quick-detachable intermediate mounting structure as described in claim 1, characterized in that, The mounting section (13) is provided with a second external thread (131) at one end away from the bearing section (12), and the second external thread (131) is used to connect the bottom box of the battery pack.

9. A battery pack, characterized in that, Includes a base box and a top cover, as well as a quick-detachable intermediate mounting structure as described in any one of claims 1-8, wherein the base box is connected to the mounting section (13), and the top cover is mounted in the mounting space (100) between the bottom surface of the nut (2) and the top surface of the bearing ring (121).

10. A car, characterized in that, Includes the battery pack as described in claim 9.

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