Battery box mounting sleeve assembly structure

Abstract

The utility model discloses a battery box body mounting sleeve assembly structure which is characterized by comprising a box body frame and a mounting sleeve, a strip-shaped through hole is formed in the box body frame, an inner boss and an outer boss which extend outwards in the radial direction are arranged on the circumferential side wall of the mounting sleeve, an annular groove is formed between the inner boss and the outer boss, and the mounting sleeve is arranged in the annular groove. The width of the annular groove is matched with the depth of the strip-shaped through hole, and the inner boss can penetrate through the annular groove. After the inner boss penetrates through the strip-shaped through hole, the hanging sleeve rotates by 90 degrees, the annular groove can be connected to the two sides of the strip-shaped through hole in the width direction in a clamped mode, and after the annular groove is connected with the strip-shaped through hole in a clamped mode, the hanging sleeve and the box frame are fixedly connected through at least one welding point. The mounting sleeve has the beneficial effects that through the design of the strip-shaped through holes and the inner bosses, the contact area between the mounting sleeve and the box body frame is smaller, so that the required welding area is smaller, and the deformation of the mounting sleeve is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile tooling, in particular to a battery box mounting sleeve assembly structure. Background Art

[0002] Power batteries are a crucial component of new energy vehicles. Physically, they consist of a battery case and a battery pack located within it. The battery case is a frame-like structure with a number of holes distributed around its circumference. Mounting sleeves are located within these holes. During vehicle assembly, the battery case is mounted on the underbody via these mounting sleeves, enabling the power battery to be mounted. Currently, mounting sleeves are primarily welded into the holes in the battery case.

[0003] To ensure the mounting sleeve is securely welded to the battery case, it must be welded all around its circumference. However, welding generates high temperatures, and the mounting sleeve itself is not a large object. This can easily cause overall deformation after welding, making it impossible to meet the required dimensional tolerances for assembly, resulting in product rejection, lowering yield rates, and increasing production costs. Furthermore, this extensive welding adds to the mounting sleeve's weight, increasing the overall load-bearing capacity. Utility Model Content

[0004] In view of this, the utility model provides a battery box mounting sleeve assembly structure, which aims to reduce the amount of welding, avoid deformation of the mounting sleeve, and also ensure the lightweight of the product.

[0005] To achieve the above purpose, the technical solution of this utility model is as follows:

[0006] A battery box mounting sleeve assembly structure is characterized in that it includes: a box frame, a strip through hole is provided on the box frame; and a mounting sleeve, an inner boss and an outer boss are provided on the circumferential side wall of the mounting sleeve, both of which extend radially outward, and an annular groove is formed between the inner boss and the outer boss, the width of the annular groove is adapted to the depth of the strip through hole, and the inner boss can pass through the annular groove; after the inner boss passes through the strip through hole, the mounting sleeve is rotated 90°, and the annular groove can be clamped on both sides of the width direction of the strip through hole. After the annular groove is clamped with the strip through hole, the mounting sleeve and the box frame are fixed by at least one welding point.

[0007] By adopting the above structure, through the design of the strip-shaped through hole and the inner boss, the mounting sleeve can be locked with the box frame after rotation. Compared with the traditional circular structure, the contact area between the mounting sleeve and the box frame is smaller, which makes the required welding area smaller and effectively avoids deformation of the mounting sleeve.

[0008] Preferably, the strip-shaped through-hole, inner boss, and outer boss are all waist-shaped structures, with the inner boss length being shorter than the strip-shaped through-hole length, the inner boss width being shorter than the strip-shaped through-hole width, the inner boss length being longer than the strip-shaped through-hole width, and the strip-shaped through-hole length being shorter than the outer boss length. This structure ensures that after the mounting sleeve is inserted into the strip-shaped through-hole and rotated, it locks with the box frame. The outer boss facilitates insertion of the mounting sleeve into the strip-shaped through-hole and also facilitates observation of the mounting sleeve's rotation angle.

[0009] Preferably, the side of the box frame is provided with a first mounting plate and a second mounting plate along its length, the first mounting plate and the second mounting plate being arranged in parallel, the strip-shaped through-hole array being distributed on the first mounting plate, and the second mounting plate being provided with a circular hole array, with each strip-shaped through-hole corresponding to each circular hole. With this structure, the two mounting plates ensure a more stable installation between the mounting sleeve and the mounting.

[0010] Preferably, an extension section is provided on the side of the inner boss away from the annular groove, and the sum of the thickness of the extension section and the inner boss is equal to the distance between the first mounting plate and the second mounting plate.

[0011] As a preference, the cross-sectional shape of the extension section is orthogonally projected onto the interior of the cross-sectional shape of the inner boss. With the above structure, it is possible to ensure that the extension section can pass through the strip-shaped through hole.

[0012] Preferably, the mounting sleeve is provided with a through hole along its length, the through hole being used to pass a pin, and the cross-sectional size of the circular hole is adapted to the through hole. The above structure facilitates passing a pin so that the battery box can be mounted on the bottom of the vehicle.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The battery box mounting sleeve assembly structure provided by the utility model, compared with the traditional mounting sleeve and the circular hole welded as a whole, the annular groove is pre-clamped on the strip through hole, and already has a certain mounting strength, and can initially bear a large amount of load. Therefore, on this basis, the mounting sleeve and the box frame can form an extremely reliable fixed connection through only one or two spot weldings, thereby reducing the welding amount between the mounting sleeve and the box frame, effectively avoiding deformation of the mounting sleeve, and also making the entire assembly structure lighter. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional exploded schematic diagram of the mounting sleeve 2 and the box frame 1;

[0016] Figure 2 It is a cross-sectional schematic diagram of the mounting sleeve 2 being assembled on the box frame 1;

[0017] Figure 3 It is a structural diagram of the mounting sleeve 2;

[0018] Figure 4 A schematic cross-sectional view showing the structure of the box frame 1;

[0019] Figure 5 It is a structural schematic diagram showing the size relationship between the strip-shaped through hole 1a and the circular hole 1d. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0021] like Figure 1 and Figure 2 As shown, a battery case mounting sleeve assembly structure includes a case frame 1 and a mounting sleeve 2, wherein the case frame 1 is used to mount the battery case on the bottom of the vehicle, and the case frame 1 is provided with an array of strip-shaped through holes 1a. The circumferential sidewalls of the mounting sleeve 2 are provided with inner bosses 2a and outer bosses 2c, both extending radially outward. An annular groove 2b is formed between the inner boss 2a and the outer boss 2c. The groove width of the annular groove 2b is adapted to the depth of the strip-shaped through hole 1a, and the inner boss 2a can pass through the annular groove 2b. In this embodiment, after the inner boss 2a passes through the strip-shaped through hole 1a, the mounting sleeve 2 is rotated 90°, and the annular groove 2b can be clamped on both sides of the width direction of the strip-shaped through hole 1a. After the annular groove 2b is clamped with the strip-shaped through hole 1a, the mounting sleeve 2 is fixed to the case frame 1 by at least one welding point.

[0022] With this design, compared to the conventional method of integrally welding the mounting sleeve to the circular hole, the annular groove 2b is pre-attached to the strip-shaped through-hole 1a, which already possesses a certain degree of mounting strength and can initially bear a large amount of load. Therefore, on this basis, the mounting sleeve 2 and the box frame 1 can be connected with each other by only one or two spot welds, thereby reducing the amount of welding between the mounting sleeve 2 and the box frame 1, effectively preventing deformation of the mounting sleeve 2, and also making the entire assembly structure more lightweight. In this embodiment, after the annular groove 2b is attached to the strip-shaped through-hole 1a, the mounting sleeve 2 and the box frame 1 are fixedly connected by two spot welds, which are symmetrically arranged at the areas where the outer boss 2c contacts the box frame 1 along its length.

[0023] like Figure 1 and Figure 3As shown, the strip-shaped through hole 1a, the inner boss 2a, and the outer boss 2c are all constructed into a waist-shaped structure, and the length dimension of the inner boss 2a is smaller than the length dimension of the strip-shaped through hole 1a, the width dimension of the inner boss 2a is smaller than the width dimension of the strip-shaped through hole 1a, and the length dimension of the inner boss 2a is larger than the width dimension of the strip-shaped through hole 1a, so as to ensure that after the mounting sleeve 2 rotates 90°, the mounting sleeve 2 and the box frame 1 can be locked. In addition, the length dimension of the strip-shaped through hole 1a is smaller than the length dimension of the outer boss 2c. Such a design can facilitate the installation of the mounting sleeve 2, and by observing the cross-section of the outer boss 2c, the rotation angle of the mounting sleeve 2 can be determined, thereby ensuring that the mounting sleeve 2 and the box frame 1 are assembled more tightly.

[0024] In this embodiment, in addition to being constructed into a waist-shaped structure, the strip-shaped through hole 1a, the inner boss 2a and the outer boss 2c can also be constructed into other polygonal structures besides a circle. At this time, the angle of rotation required for the mounting sleeve 2 also needs to be adjusted according to the specific shape of the cross-section of the inner boss 2a and the strip-shaped through hole 1a.

[0025] In this embodiment, two box frames 1 are arranged in parallel to ensure that the battery box is more firmly installed on the bottom of the car. Figure 4 and Figure 5 As shown, a first mounting plate 1b and a second mounting plate 1c are formed on the outer side of the box frame 1 along its length direction. The first mounting plate 1b and the second mounting plate 1c are arranged parallel to each other up and down. The strip-shaped through holes 1a are distributed in an array on the first mounting plate 1b, and the second mounting plate 1c is distributed in an array with circular holes 1d. Each strip-shaped through hole 1a corresponds to a circular hole 1d one by one.

[0026] For example Figure 2 As shown, an extension section 2d is formed on the side of the inner boss 2a away from the annular groove 2b. In this embodiment, the sum of the thickness of the extension section 2d and the inner boss 2a is equal to the distance between the first mounting plate 1b and the second mounting plate 1c, so that the mounting sleeve 2 and the box frame 1 are assembled more tightly.

[0027] like Figure 2 and Figure 5 As shown, the mounting sleeve 2 is formed with a through hole 2e along the length direction. The through hole 2e is used to pass a pin so that the battery box can be installed on the bottom of the car. The cross-sectional shape of the circular hole 1d is adapted to the through hole 2e.

[0028] In this embodiment, the cross-section of the extension section 2d is constructed into a circular structure. In addition, the cross-section of the extension section 2d can also be constructed into other polygonal structures, but the cross-sectional shape of the extension section 2d should be projected inside the cross-sectional shape of the inner boss 2a to ensure that the extension section 2d can pass through the strip-shaped through hole 1a.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present invention. Under the guidance of the present invention, ordinary technicians in this field can make various similar expressions without violating the purpose and claims of the present invention. Such changes fall within the scope of protection of the present invention.

Claims

1. A battery box mounting sleeve assembly structure, characterized in that: include: A box frame (1), wherein the box frame (1) is provided with a strip-shaped through hole (1a); as well as A mounting sleeve (2), wherein an inner boss (2a) and an outer boss (2c) are provided on a circumferential side wall of the mounting sleeve (2), both of which extend radially outward, an annular groove (2b) is formed between the inner boss (2a) and the outer boss (2c), the width of the annular groove (2b) being adapted to the depth of the strip-shaped through hole (1a), and the inner boss (2a) is capable of passing through the annular groove (2b); After the inner boss (2a) passes through the strip through hole (1a), the mounting sleeve (2) rotates 90 degrees, and the annular groove (2b) can be engaged with both sides of the strip through hole (1a) in the width direction. After the annular groove (2b) is engaged with the strip through hole (1a), the mounting sleeve (2) and the box frame (1) are fixedly connected via at least one welding point.

2. The battery box mounting sleeve assembly structure according to claim 1, characterized in that: The strip-shaped through hole (1a), the inner boss (2a) and the outer boss (2c) are all waist-shaped structures; the length of the inner boss (2a) is smaller than the length of the strip-shaped through hole (1a); the width of the inner boss (2a) is smaller than the width of the strip-shaped through hole (1a); the length of the inner boss (2a) is larger than the width of the strip-shaped through hole (1a); and the length of the strip-shaped through hole (1a) is smaller than the length of the outer boss (2c).

3. The battery box mounting sleeve assembly structure according to claim 1, characterized in that: A first mounting plate (1b) and a second mounting plate (1c) are provided on the side of the box frame (1) along its length direction; the first mounting plate (1b) and the second mounting plate (1c) are arranged in parallel; the strip-shaped through holes (1a) are distributed in an array on the first mounting plate (1b); the second mounting plate (1c) is provided with circular holes (1d) in an array; and each of the strip-shaped through holes (1a) and the circular holes (1d) correspond to each other one by one.

4. The battery box mounting sleeve assembly structure according to claim 3, characterized in that: An extension section (2d) is provided on the side of the inner boss (2a) away from the annular groove (2b), and the sum of the thicknesses of the extension section (2d) and the inner boss (2a) is equal to the distance between the first mounting plate (1b) and the second mounting plate (1c).

5. The battery box mounting sleeve assembly structure according to claim 4, characterized in that: The cross-sectional shape of the extension section (2d) is projected onto the interior of the cross-sectional shape of the inner boss (2a).

6. The battery box mounting sleeve assembly structure according to claim 3, characterized in that: The mounting sleeve (2) is provided with a through hole (2e) along the length direction, the through hole (2e) is used to pass a pin shaft, and the cross-sectional size of the circular hole (1d) is adapted to the through hole (2e).

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