Battery pack box structure

Abstract

The utility model discloses a battery pack box structure, which relates to the field of battery boxes, including a box composed of an upper cover plate and a lower guard plate, wherein the upper cover plate is located above the lower guard plate, and the peripheries of the docking positions of the upper cover plate and the lower guard plate are respectively integrally formed with an upper connecting end plate and a lower connecting end plate, and the peripheries of the upper connecting end plate and the lower connecting end plate are formed with a reinforcing sealing mechanism; the reinforcing sealing mechanism is used to improve the sealing performance at the docking position of the upper connecting end plate and the lower connecting end plate. The utility model sets a reinforcing sealing mechanism, which is located at the periphery of the upper cover plate and the lower guard plate. When the car is maintained, it can be intuitively seen whether the reinforcing sealing mechanism is damaged, without having to wait until the battery fails and then disassemble the machine to find out. Secondly, in conjunction with the inner sealing ring, the sealing performance of the battery pack box can be further improved.

Description

Technical Field

[0001] The utility model relates to the field of battery boxes, in particular to a battery pack box structure. Background Art

[0002] The battery pack box is a box that holds batteries, with an upper cover on the top and a lower guard on the bottom, and the battery module is installed in the lower guard.

[0003] The battery is a device that needs to be dustproof and waterproof. In the prior art, a sealing ring is set on the joint end surface of the upper cover and the lower guard plate to prevent dust or water from entering the battery pack. This method does have a waterproof and dustproof effect in the initial use. However, as the use time increases, the battery is prone to aging and failure due to the influence of temperature and air. The sealing ring is set on the joint surface and cannot be directly found. When it is found, it is generally due to the intrusion of dust and water vapor that the battery is damaged. The damage to the sealing ring is only discovered during disassembly and maintenance. Summary of the invention

[0004] The purpose of the utility model is to provide a battery pack box structure in order to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a battery pack box structure, comprising a box body composed of an upper cover plate and a lower guard plate, wherein the upper cover plate is located above the lower guard plate, and an upper connecting end plate and a lower connecting end plate are integrally formed at the outer periphery of the docking position of the upper cover plate and the lower guard plate, and a reinforcing sealing mechanism is formed at the outer periphery of the upper connecting end plate and the lower connecting end plate;

[0006] The reinforcing sealing mechanism is used to improve the sealing performance at the butt joint between the upper connecting end plate and the lower connecting end plate;

[0007] The reinforced sealing mechanism is fixed to the upper connecting end plate and the lower connecting end plate by means of locking bolts and locking nuts. The upper connecting end plate and the lower connecting end plate are vertically provided with through holes inside. The locking bolt is inserted into the inner cavity of the through hole. A threaded groove is formed below the outer periphery of the cylinder of the locking bolt. The locking nut is connected to the locking bolt via the threaded groove.

[0008] As a further solution of the utility model: the reinforced sealing mechanism includes two sealing grooves opened along the circumferential outer walls of the upper connecting end plate and the lower connecting end plate, and an outer rubber belt attached to the outer wall of the upper connecting end plate pull belt, and an outer sealing ring engaged with the sealing groove is formed on the inner side wall of the outer rubber belt.

[0009] As a further solution of the utility model: the reinforced sealing mechanism also includes a plurality of fixing belts equidistantly formed on the outside of the outer rubber belt, the top and bottom of the fixing belt are both formed with a drawstring, and the drawstring is provided with a circular hole aligned with the through hole;

[0010] The ends of the locking bolt and locking nut in a tightened state respectively press the upper and lower drawstrings.

[0011] As a further solution of the utility model: the cross-section of the sealing groove and the outer sealing ring is a two-thirds circular structure.

[0012] As a further solution of the utility model: an inner sealing ring is arranged on the butt end surface of the upper cover plate and the lower guard plate.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. By setting up a reinforced sealing mechanism, which is located on the outer periphery of the upper cover plate and the lower guard plate, when the car is maintained, it can be intuitively seen whether the reinforced sealing mechanism is damaged, without having to wait until the battery fails and disassemble the machine to find out. Secondly, in conjunction with the inner sealing ring, the sealing of the battery pack body can be further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0017] Figure 3 For the utility model Figure 2 A partial enlarged view of point A in the middle.

[0018] In the figure: 1. upper cover plate; 2. lower guard plate; 3. outer rubber belt; 4. upper connecting end plate; 5. lower connecting end plate; 6. pull belt; 7. sealing groove; 8. outer sealing ring; 9. locking bolt; 10. locking nut; 11. inner sealing ring; 12. fixing belt. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1 to Figure 3In the embodiment of the utility model, a battery pack box structure includes a box body composed of an upper cover plate 1 and a lower guard plate 2, the upper cover plate 1 is located above the lower guard plate 2, and the outer peripheries of the docking positions of the upper cover plate 1 and the lower guard plate 2 are respectively integrally formed with an upper connecting end plate 4 and a lower connecting end plate 5, and the outer peripheries of the upper connecting end plate 4 and the lower connecting end plate 5 are formed with a reinforced sealing mechanism; the reinforced sealing mechanism is used to improve the sealing performance at the docking position of the upper connecting end plate 4 and the lower connecting end plate 5; the reinforced sealing mechanism is fixed to the upper connecting end plate 4 and the lower connecting end plate 5 by locking bolts 9 and locking nuts 10, and the upper connecting end plate 4 and the lower connecting end plate 5 are vertically opened with through holes, the locking bolts 9 are inserted into the inner cavity of the through holes, and a threaded groove is formed below the outer periphery of the cylinder of the locking bolt 9, and the locking nut 10 is connected to the locking bolt 9 through the threaded groove.

[0021] In this embodiment: when assembling the battery case, first install the battery module in the inner cavity of the lower guard plate 2. After the battery module is installed and the corresponding wire connection is completed, align the upper cover plate 1 with the lower guard plate 2. After alignment, put the reinforcement sealing mechanism on the outer periphery of the upper connecting end plate 4 and the lower connecting end plate 5, and complete the sealing of the upper connecting end plate 4 and the lower connecting end plate 5. Then insert the column part of the locking bolt 9 into the through hole, and then tighten it with the locking nut 10. The head of the top of the tightened locking bolt 9 and the locking nut 10 press the reinforcement sealing mechanism to enhance the connection force of the reinforcement sealing mechanism and prevent the reinforcement connection mechanism from falling off.

[0022] Please refer to Figure 2 and Figure 3 The reinforced sealing mechanism includes two sealing grooves 7 opened along the circumferential outer walls of the upper connecting end plate 4 and the lower connecting end plate 5, and an outer rubber belt 3 attached to the outer wall of the drawstring 6 of the upper connecting end plate 4. An outer sealing ring 8 engaged with the sealing groove 7 is formed on the inner wall of the outer rubber belt 3. The reinforced sealing mechanism also includes a plurality of fixing belts 12 equidistantly formed on the outside of the outer rubber belt 3, and the top and bottom of the fixing belt 12 are both formed with drawstrings 6, and the drawstring 6 is provided with a circular hole aligned with the through hole; the ends of the locking bolts 9 and the locking nuts 10 in the tightened state respectively press the upper and lower drawstrings 6.

[0023] In this embodiment: after the upper cover plate 1 and the lower guard plate 2 are butt-jointed, the outer rubber belt 3 is firstly put on the butt joint gap between the upper connecting end plate 4 and the lower connecting end plate 5 until the center line of the outer rubber belt 3 is roughly aligned with the butt joint gap between the upper connecting end plate 4 and the lower connecting end plate 5. At this time, an extrusion force is applied to the outer rubber belt 3 by a tool, and the extrusion force acts on the outer sealing ring 8 by squeezing the outer rubber belt 3. Since the diameter of the outer sealing ring 8 is slightly larger than the diameter of the sealing groove 7, the squeezed outer sealing ring 8 can effectively seal the gap at the joint after entering the sealing groove 7, thereby improving the sealing performance;

[0024] Then pull the two drawstrings 6 to align the circular holes on the drawstrings 6 with the through holes, then insert the column part of the locking bolt 9 into the through holes, and rotate the locking nut 10. After the locking bolt 9 and the locking nut 10 are effectively tightened, the drawstring 6 is effectively limited, thereby effectively limiting the fixing belt 12. Similarly, the fixing belt 12 effectively limits the external rubber belt 3.

[0025] Please refer to Figure 3 The cross section of the sealing groove 7 and the outer sealing ring 8 is a two-thirds circular structure.

[0026] In this embodiment, such a design can further increase the friction between the sealing groove 7 and the outer sealing ring 8 to prevent the two from being separated.

[0027] Please refer to Figure 3 An inner sealing ring 11 is arranged on the butt end surface between the upper cover plate 1 and the lower guard plate 2 .

[0028] In this embodiment: the inner sealing ring 11 cooperates with the fixed sealing mechanism to further improve the sealing performance of the connection between the battery pack and the box body.

[0029] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A battery pack box structure, comprising a box body consisting of an upper cover plate (1) and a lower guard plate (2), wherein the upper cover plate (1) is located above the lower guard plate (2), and is characterized in that: An upper connecting end plate (4) and a lower connecting end plate (5) are respectively integrally formed on the outer peripheries of the butt joint positions of the upper cover plate (1) and the lower guard plate (2), and a reinforcing sealing mechanism is formed on the outer peripheries of the upper connecting end plate (4) and the lower connecting end plate (5); The reinforced sealing mechanism is used to improve the sealing performance at the butt joint position between the upper connecting end plate (4) and the lower connecting end plate (5); The reinforcing sealing mechanism is fixed to the upper connecting end plate (4) and the lower connecting end plate (5) via locking bolts (9) and locking nuts (10); a through hole is vertically opened inside the upper connecting end plate (4) and the lower connecting end plate (5); the locking bolt (9) is inserted into the inner cavity of the through hole; a thread groove is formed below the outer periphery of the cylinder of the locking bolt (9); and the locking nut (10) is connected to the locking bolt (9) via the thread groove.

2. A battery pack box structure according to claim 1, characterized in that: The reinforced sealing mechanism comprises two sealing grooves (7) formed along the circumferential outer walls of the upper connecting end plate (4) and the lower connecting end plate (5), and an outer rubber belt (3) attached to the outer wall of the pull belt (6) of the upper connecting end plate (4), and an outer sealing ring (8) engaged with the sealing groove (7) is formed on the inner side wall of the outer rubber belt (3).

3. A battery pack box structure according to claim 2, characterized in that: The reinforced sealing mechanism further comprises a plurality of fixing belts (12) formed at equal distances on the outside of the outer rubber belt (3), a draw belt (6) being formed on the top and bottom of the fixing belt (12), and a circular hole aligned with the through hole being formed on the draw belt (6); The ends of the locking bolt (9) and the locking nut (10) in a tightened state respectively press the upper and lower drawstrings (6).

4. A battery pack box structure according to claim 2, characterized in that: The cross-section of the sealing groove (7) and the outer sealing ring (8) is a two-thirds circular structure.

5. The battery pack box structure according to claim 1, characterized in that: An inner sealing ring (11) is provided on the butt-jointed end surfaces of the upper cover plate (1) and the lower guard plate (2).

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