Lithium-sodium battery pack dustproof and waterproof shell suitable for low-speed vehicle

Abstract

The utility model provides a lithium-sodium battery pack dustproof and waterproof shell suitable for low-speed vehicles, which relates to the technical field of battery pack shell design, and comprises an upper cover and a lower shell, a lithium-sodium battery pack body is accommodated in the lower shell, the upper cover is detachably connected to the lower shell, and the upper cover and the lower shell are tightly connected through a sealing rubber strip. The upper cover is provided with a plurality of wire outlet holes, the wire outlet holes are sleeved with waterproof joints, and the middle of each waterproof joint is provided with an outlet shaped like a Chinese character'mi '. By adopting a dual-sealing structure of the sealing rubber strip and the waterproof lip edge, the dustproof and waterproof performance of the shell is greatly improved, water and dust are effectively prevented from entering the battery pack, and the performance and safety of the battery pack are protected.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery pack shell design technical field, especially suitable for low speed vehicle (such as pure electric low speed vehicle, electric bicycle etc.) lithium sodium battery pack dustproof waterproof shell design. BACKGROUND

[0002] With the wide application of low speed vehicles, such as electric bicycles, electric tricycles, etc., the performance and service life of their power source, lithium sodium battery pack, have attracted more and more attention. During use, lithium sodium battery pack needs a good protective shell to prevent impurities such as dust and moisture from entering the inside of the battery pack, affecting the performance and safety of the battery. However, the existing lithium sodium battery pack shell has deficiencies in dustproof and waterproof performance, and it is difficult to meet the complex use environment requirements of low speed vehicles. For example, when driving in the rain or passing through a road with a lot of dust, moisture and dust can easily enter the battery pack through the gaps of the shell, causing battery short circuit, corrosion and other problems, reducing the service life and reliability of the battery.

[0003] Therefore, it is particularly important to design a lithium sodium battery pack shell with excellent dustproof and waterproof performance. SUMMARY

[0004] (I) Technical problem solved

[0005] In view of the deficiencies of the prior art, the utility model provides a lithium sodium battery pack dustproof waterproof shell suitable for low speed vehicles, which solves the problems raised in the above background technology.

[0006] (II) Technical scheme

[0007] To achieve the above purpose, the utility model discloses a lithium sodium battery pack dustproof waterproof shell suitable for low speed vehicles: including upper cover and lower shell, the lower shell is internally provided with lithium sodium battery pack body, the upper cover is detachably connected on the lower shell, the upper cover and the lower shell are tightly connected through sealing rubber strip, a plurality of wire holes are formed on the upper cover, a waterproof joint is sleeved on the wire hole, and a rice-shaped outlet is arranged in the middle of the waterproof joint.

[0008] Preferably, a waterproof lip is arranged at the connecting part of the upper cover and the lower shell, the waterproof lip of the upper cover is an outer waterproof lip, the waterproof lip of the lower shell is an inner waterproof lip, the outer waterproof lip extends downward, the inner waterproof lip extends upward and downward, and when the upper cover and the lower shell are closed, the outer waterproof lip and the inner waterproof lip overlap each other to form a double waterproof structure.

[0009] Preferably, an upper clamping groove is formed at the lower end of the outer waterproof lip, a lower clamping groove is formed on the outer side of the upper edge of the lower shell, and a first sealing ring is clamped in the upper clamping groove and the lower clamping groove.

[0010] Preferably, the upper end of the inner waterproof lip is sleeved with a second sealing ring, and the second sealing ring has an inverted U-shaped cross section and is sleeved on the upper end of the inner waterproof lip.

[0011] Preferably, the bottom of the lower shell is provided with a plurality of heat dissipation fins arranged and distributed, and the plurality of heat dissipation fins are penetrated by heat dissipation holes.

[0012] Preferably, the outer side of the lower shell is provided with a plurality of threaded hole seats, and the outer side of the upper cover is provided with a plurality of connecting seats corresponding to the threaded hole seats, and the connecting seats are engaged with bolts in the threaded hole seats to be fixed.

[0013] (Three) beneficial effects

[0014] The utility model provides a lithium sodium battery pack dustproof and waterproof shell suitable for low speed vehicle. Have the following beneficial effects:

[0015] 1、The lithium sodium battery pack dustproof and waterproof shell suitable for low speed vehicle, through adopting the double sealing structure of sealing rubber strip and waterproof lip, the dustproof and waterproof performance of the shell is greatly improved, water and dust are effectively prevented from entering the inside of the battery pack, and the performance and safety of the battery pack are protected;

[0016] 2、The lithium sodium battery pack dustproof and waterproof shell suitable for low speed vehicle, the use of waterproof joint ensures the sealing of the outlet hole, and avoids the outlet hole to become a weak link of dustproof and waterproof;

[0017] 3、The lithium sodium battery pack dustproof and waterproof shell suitable for low speed vehicle, the design of the heat dissipation fin reduces dust accumulation while ensuring the heat dissipation effect, improves the overall performance of the shell, prolongs the service life of the lithium sodium battery pack, and meets the demand of complex use environment of low speed vehicle ACCURACY OF DRAWINGS

[0018] Figure 1 It is a lithium sodium battery pack dustproof and waterproof shell structure schematic diagram suitable for low speed vehicle of the utility model Figure 1 ;

[0019] Figure 2 It is a lithium sodium battery pack dustproof and waterproof shell structure schematic diagram suitable for low speed vehicle of the utility model Figure 2 ;

[0020] Figure 3 It is a lithium sodium battery pack dustproof and waterproof shell sectional structure diagram suitable for low speed vehicle of the utility model;

[0021] Figure 4 It is an enlarged view of A of Figure 3 ;

[0022] Figure 5 It is an explosion drawing of the lithium sodium battery pack dustproof and waterproof shell suitable for low speed vehicle of the utility model.

[0023] In the figure: 1, the upper cover; 2, the lower shell; 3, the waterproof joint; 4, the outer waterproof lip; 5, the inner waterproof lip; 6, the rice-shaped outlet; 7, the upper clamping groove; 8, the lower clamping groove; 9, the first sealing ring; 10, the second sealing ring; 11, the heat dissipation fin; 12, the heat dissipation hole; 13, the screw hole seat; 14, the connecting seat; 15, the bolt. DETAILED DESCRIPTION

[0024] The utility model embodiment provides the lithium sodium battery pack dustproof waterproof shell suitable for low speed vehicle, such as Figures 1-5 As shown, the shell is made of strong and durable material, such as high-strength plastic or lightweight alloy, to ensure the integrity of the shell in complex environments. It includes an upper cover and a lower shell, the lower shell contains a lithium sodium battery pack body, the upper cover is detachably connected to the lower shell, the upper cover and the lower shell are tightly connected by a sealing rubber strip, a plurality of wire holes are formed in the upper cover, a waterproof joint is sleeved on the wire hole, and a rice-shaped outlet is arranged in the waterproof joint. The waterproof joint is tightly connected with the wire hole of the shell, the wire or the connecting wire is rice-shaped, and the rice-shaped outlet prevents water and dust from entering the shell.

[0025] As shown in Figure 3 , a waterproof lip is arranged at the connecting portion of the upper cover and the lower shell, the waterproof lip of the upper cover extends downward, the waterproof lip of the lower shell extends upward, and when the two are closed, the waterproof lips overlap each other to form a double waterproof structure, further improving the waterproof performance.

[0026] As shown in Figure 3 and Figure 4 , Figure 5 , the outer waterproof lip is provided with an upper clamping groove at the lower end, the outer side of the lower shell is provided with a lower clamping groove, and the first sealing ring is clamped in the upper clamping groove and the lower clamping groove.

[0027] As shown in Figure 3 and Figure 4 , the inner waterproof lip is sleeved with a second sealing ring at the upper end, the cross section of the second sealing ring is inverted U-shaped, and the second sealing ring is sleeved and wrapped around the upper end of the inner waterproof lip.

[0028] Sealing material selection: high-quality sealing materials such as silicone rubber or other synthetic rubber are used, which have excellent elasticity and aging resistance, and can effectively prevent water and dust from entering. In key parts of the battery pack shell, such as interfaces and slots, sealing rubber rings or sealing covers are used for sealing treatment.

[0029] As shown in Figure 2As shown, the bottom of the lower shell is provided with a plurality of heat dissipation fins arranged, and a plurality of heat dissipation holes are arranged through the heat dissipation fins. The lower shell bottom is provided with a plurality of heat dissipation fins, which are integrally formed with the lower shell, increasing the heat dissipation area and effectively reducing the heat generated by the battery pack during operation. At the same time, the shape and arrangement of the heat dissipation fins are optimized, which can reduce the accumulation of dust on the fins.

[0030] As Figure 1 , the lower shell is provided with a plurality of screw hole seats, and the upper cover is provided with a plurality of connecting seats on the outside, which are engaged with the screw hole seats and fixed by bolts.

[0031] In addition, the waterproof coating is applied: a layer of waterproof coating, such as polyurethane coating or silicone coating, is coated on the surface of the upper cover and the lower shell to increase the waterproof performance of the shell. The waterproof coating can form a continuous protective film to prevent water from directly contacting the shell.

[0032] Working principle:

[0033] Shell assembly: First, embed the sealing rubber strip into the clamping groove of the connecting edge of the upper cover and the lower shell, and ensure that the sealing rubber strip is installed firmly and without distortion. Specifically, the second sealing ring is sleeved on the inner waterproof lip, the first sealing ring is clamped in the upper and lower clamping grooves, and then the upper cover and the lower shell are aligned, the waterproof lip is overlapped, and the upper cover and the lower shell are tightly fixed together by bolt connection.

[0034] Wire hole treatment: according to the number and specifications of the battery pack wires, select the appropriate waterproof connector. Install the connector body at the wire outlet hole of the shell, ensure tight connection, then pass the wire through the rice-shaped outlet, and complete the waterproof sealing treatment of the wire hole.

[0035] Installation and use: install the assembled lithium-sodium battery pack dustproof and waterproof shell on the appropriate position of the low-speed vehicle, connect the battery pack and the vehicle circuit system. During use, check the sealing performance of the shell and the cleaning condition of the heat dissipation fins regularly, such as replacing the aging or damaged sealing rubber strip in time; if there is a lot of dust accumulated on the heat dissipation fins, clean them in time to ensure the dustproof and waterproof and heat dissipation performance of the shell, and ensure the normal work of the lithium-sodium battery pack

[0036] In summary, the lithium-sodium battery pack dustproof and waterproof shell suitable for low-speed vehicles greatly improves the dustproof and waterproof performance of the shell through the double sealing structure of the sealing rubber strip and the waterproof lip, effectively prevents moisture and dust from entering the inside of the battery pack, protects the performance and safety of the battery pack, the use of the waterproof joint ensures the sealing of the wire outlet hole, avoids the place becoming a weak link of dustproof and waterproof, the design of the heat dissipation fin reduces the dust accumulation while ensuring the heat dissipation effect, improves the overall performance of the shell, prolongs the service life of the lithium-sodium battery pack, and meets the needs of the complex use environment of the low-speed vehicles.

[0037] Although the embodiments of the utility model have been shown and described, it can be understood by those of ordinary skill in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A dust and water resistant enclosure for a lithium-sodium battery pack for a low speed vehicle, characterized by: Including upper cover (1) and lower shell (2), the lithium sodium battery body is contained in the lower shell (2), the upper cover (1) is detachably connected on the lower shell (2), the upper cover (1) and the lower shell (2) are tightly connected by sealing rubber strip, a plurality of wire holes are formed on the upper cover (1), the waterproof joint (3) is sleeved on the wire hole, the waterproof joint (3) is provided with a rice-shaped outlet (6) in the middle.

2. The dust and water resistant enclosure for a lithium-sodium battery pack suitable for use in low speed vehicles of claim 1, wherein: The connecting part of the upper cover (1) and the lower shell (2) is also provided with a waterproof lip, the waterproof lip of the upper cover (1) is an outer waterproof lip (4), the waterproof lip of the lower shell (2) is an inner waterproof lip (5), the outer waterproof lip (4) extends downward, the inner waterproof lip (5) extends upward and downward, when the upper cover (1) and the lower shell (2) are closed, the outer waterproof lip (4) and the inner waterproof lip (5) overlap each other, forming a double waterproof structure.

3. The dust and water resistant enclosure for a lithium-sodium battery pack suitable for use in low speed vehicles of claim 2, wherein: The lower end of the outer waterproof lip (4) is provided with an upper clamping groove (7), and the outer side of the lower shell (2) is provided with a lower clamping groove (8), and the upper clamping groove (7) and the lower clamping groove (8) are clamped with a first sealing ring (9).

4. The dust and water resistant enclosure for a lithium-sodium battery pack for low speed vehicles of claim 2, wherein: The upper end of the inner waterproof lip (5) is sleeved with a second sealing ring (10), and the cross section of the second sealing ring (10) is inverted U-shaped, which is sleeved on the upper end of the inner waterproof lip (5).

5. The dust and water resistant enclosure for a lithium-sodium battery pack for low speed vehicles of claim 1, wherein: The bottom of the lower shell (2) is provided with a plurality of heat dissipation fins (11), and the plurality of heat dissipation fins (11) are penetrated by heat dissipation holes (12).

6. The dust and water resistant enclosure for a lithium-sodium battery pack for low speed vehicles of claim 1, wherein: The outer side of the lower shell (2) is provided with a plurality of screw hole seats (13), and the outer side of the upper cover (1) is provided with a plurality of connecting seats (14), and the connecting seat (14) is engaged with the screw hole seat (13) and fixed by the bolt (15).

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