Waterproof rubber sleeve for low-voltage interface of battery pack of new energy automobile

Abstract

The utility model relates to a waterproof rubber sleeve for a low-voltage interface of a battery pack of a new energy automobile, which belongs to the field of new energy automobiles and comprises a shell (1) and an interface (2), the shell (1) is provided with an air inlet (3) and a drain hole (4), the outer wall of the interface (2) is provided with a bump (8), the shell (1) is a rubber shell, and the interface (2) is a rubber joint. The air inlet hole (3) can achieve balance of internal air when the temperature changes, and sealing failure caused by air pressure difference is avoided. The drainage hole (4) ensures that accumulated water in a humid environment can be rapidly drained, the interior is kept dry, short circuit and corrosion are prevented, the connector (2) is provided with an annular protrusion (8) used for tight connection of the connector (2) and a wire harness, and looseness caused by external force or vibration is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of new energy vehicles, specifically, the utility model relates to a waterproof rubber sleeve for a low-voltage interface of a new energy vehicle battery pack. BACKGROUND

[0002] The rapid development of new energy vehicles, especially electric vehicles, has led to a wide demand for power battery systems. As the core component of electric vehicles, the safety and reliability of the battery pack directly affect the performance of the vehicle. Not only does it need to meet the requirements of high energy density and long service life, but it also needs to be waterproof and dustproof to adapt to various complex working environments. In the battery pack of a new energy vehicle, the low-voltage interface is used to connect the internal management system of the battery pack and communicate with external devices. These interfaces need to maintain stable electrical connections during charging, discharging, and daily use, so they must be protected from water intrusion to avoid short circuits, corrosion, and other problems. Since new energy vehicles often operate in various environments, including rainy days, humid areas, and off-road conditions, the low-voltage interface of the battery pack is directly at risk of water intrusion. Therefore, effective waterproof measures are needed to ensure the sealing of the interface and enhance the safety and reliability of the vehicle. Rubber materials have good elasticity, weather resistance, and excellent sealing performance, effectively preventing water and foreign matter from entering. In addition, modern rubber materials can adapt to a wide temperature range, are resistant to acid and alkali, and have increasingly enhanced anti-aging performance, making them an important choice for achieving waterproof battery pack interfaces.

[0003] The battery pack of a new energy vehicle is its core component, and the low-voltage interface connector, as a bridge between the battery pack and external systems, must have excellent waterproof performance. In China, many existing waterproof rubber sleeve designs on the market have the following problems:

[0004] 1. Insufficient waterproof performance: The materials of existing products cannot effectively cope with long-term water immersion or humid environments, leading to a decline in sealing performance.

[0005] 2. Lack of drainage function: Most designs do not consider the problem of water accumulation. Once water seeps into the rubber sleeve, it can easily cause short circuits or corrosion, severely affecting the safety and reliability of the battery pack.

[0006] 3. Single fixing method: The existing fixing structure is mostly simple clamping, lacking flexibility, and prone to loosening due to factors such as vibration and temperature changes, increasing the risk of failure.

[0007] These defects cause frequent failures of the battery pack interface in the actual use of new energy vehicles, affecting the safety of the vehicle and user experience. China Patent CN220710469U, which was disclosed on April 2, 2024, still lacks drainage performance and has a single fixing method. SUMMARY

[0008] The utility model aims at providing a new energy automobile battery pack low pressure interface waterproof rubber sleeve which has good waterproof and drainage performance and is more firmly fixed.

[0009] In order to achieve the above-mentioned purpose, the utility model takes the technical scheme that:

[0010] A waterproof rubber sleeve for a low-voltage interface of a new energy automobile battery pack includes a shell and an interface.

[0011] The top end of the shell is provided with a step, and the air inlet hole is arranged at one end of the step.

[0012] The bottom end of the shell is provided with a boss, and the drainage hole is arranged at one end of the boss.

[0013] The two sides of the shell are provided with protrusions.

[0014] The protrusions are annular, uniformly arranged, and arranged at one end close to the shell.

[0015] The shell is internally hollow; and the shell is internally provided with a stepped structure.

[0016] The air inlet hole and the drainage hole are circular.

[0017] The end of the shell is provided with a rounded corner.

[0018] The shell is a rubber shell; and the interface is a rubber joint.

[0019] The utility model has the following technical effects:

[0020] 1. Significantly enhanced waterproof performance: through the double-hole design, the waterproof ability of the rubber sleeve is greatly improved, ensuring the safe use of the battery pack in a humid environment.

[0021] 2. Effectively prolonging the service life: the use of high-performance materials and innovative design makes the rubber sleeve show better durability in long-term use, reducing the maintenance frequency.

[0022] 3. Optimized fixing method: the corrugated tail design makes the connector more firmly fixed, which can effectively resist the influence of external vibration and temperature change, improving the use safety. BRIEF DESCRIPTION OF DRAWINGS

[0023] This specification includes the following drawings, and the shown contents are as follows:

[0024] Figure 1 It is a waterproof rubber sleeve structure diagram for a low-voltage interface of a new energy automobile battery pack.

[0025] Figure 2 For Figure 1 is a top view.

[0026] In the figure, marked: 1, the shell; 2, the interface; 3, the air inlet hole; 4, the drain hole; 5, the boss; 6, the step; 7, the protrusion; 8. The lug. DETAILED DESCRIPTION

[0027] The specific embodiments of the present application are further described in detail below with reference to the drawings, by describing the embodiments, the purpose is to help the technical personnel in the field to have more complete, accurate and in-depth understanding of the inventive concept and technical scheme of the present application, and to help its implementation.

[0028] As Figure 1 and Figure 2 shown, a new energy automobile battery pack low-voltage interface waterproof rubber sleeve, including shell 1 and interface 2, shell 1 is equipped with air inlet hole 3 and drain hole 4, the outer wall of interface 2 is equipped with lug 8. Interface 2 is used for connecting with new energy automobile battery pack low-voltage interface wire harness.

[0029] The top end of shell 1 is provided with a step 5, and the air inlet hole 3 is arranged at one end of the step 5. The air inlet hole 3 is arranged on the step 5 at the top end of the shell 1, and the air inlet hole 3 can balance the internal gas when the temperature changes, avoiding the sealing failure caused by the pressure difference.

[0030] The bottom end of shell 1 is provided with a boss 6, and the drain hole 4 is arranged at one end of the boss 6. The drain hole 4 is located on the boss 6 at the bottom end of the shell 1, and the drain hole 4 ensures that the accumulated water can be quickly discharged in a humid environment, keeping the inside dry and preventing short circuit and corrosion.

[0031] The two sides of shell 1 are provided with protrusions 7. The protrusions 7 can play the role of anti-skid.

[0032] The lug 8 is annular, the lug 8 is uniformly arranged, and the lug 8 is arranged at one end close to the shell 1. The tail of the interface 2 part adopts the corrugated design of the lug 8, and the uniformly arranged lug 8 can provide firm connection, ensure that each component is tightly combined, prevent loosening and falling off, can be tightly combined with the wire harness, prevent slipping and enhance the stability of the connection, avoid loosening caused by external force or vibration, reduce the failure rate.

[0033] The inside of shell 1 is hollow structure; the inside of shell 1 is provided with a stepped structure. The stepped structure in the inside of shell 1 is beneficial to the water flowing into the drain hole 4 along the steps.

[0034] The air inlet hole 3 and the drain hole 4 are circular. The circular air inlet hole 3 and the exhaust hole 4 are convenient to manufacture and more suitable for balancing the air pressure and quickly draining water.

[0035] The end of the shell 1 is provided with a round corner. The chamfered corner can reduce stress concentration phenomenon, thereby prolonging the service life of the part, the round corner can make the product appearance more round and beautiful, improve the overall quality of the product, can effectively prevent burr and scratch phenomenon, improve the safety and comfort of the product.

[0036] The shell 1 is a rubber shell; the interface 2 is a rubber joint. The shell 1 and the interface 2 are both rubber materials, the rubber material has good elasticity, weather resistance and excellent sealing performance, can effectively prevent moisture and foreign matter from invading, in addition, modern rubber materials can adapt to a wide temperature range, acid and alkali resistance, anti-aging performance is also increasingly enhanced, making it an important choice to realize the waterproof of the battery pack interface.

[0037] Working principle: in actual use, the air inlet hole 3 makes the internal gas flow freely, prevents excessive air pressure, and speeds up the speed of moisture discharge, while the drain hole 4 can effectively discharge excess moisture to ensure the normal work of the connector, the annular design at the interface 2 ensures the firmness of the rubber sleeve during use, reduces the failure rate, and the use of rubber products can have good elasticity, weather resistance and excellent sealing performance, effectively preventing moisture and foreign matter from invading.

[0038] The above is an exemplary description of the present application with reference to the accompanying drawings. Obviously, the specific implementation of the present application is not limited by the above method. As long as various non-essential improvements are made by adopting the method concept and technical scheme of the present application; or without improvement, the above concept and technical scheme of the present application are directly applied to other occasions, all within the protection scope of the present application.

Claims

1. A waterproof rubber sleeve for a low-voltage interface of a new energy vehicle battery pack, comprising a shell (1) and an interface (2), characterized in that: The shell (1) is provided with air inlet holes (3) and drainage holes (4); the outer wall of the interface (2) is provided with protrusions (8).

2. The waterproof rubber sleeve for a low-voltage interface of a new energy vehicle battery pack according to claim 1, characterized in that: One end of the shell (1) is provided with a step (5), and the air inlet holes (3) are arranged at one end of the step (5).

3. The waterproof rubber sleeve for a low-voltage interface of a new energy vehicle battery pack according to claim 2, characterized in that: The other end of the shell (1) is provided with a boss (6), and the drainage holes (4) are arranged at one end of the boss (6).

4. The waterproof rubber sleeve for a low-voltage interface of a new energy vehicle battery pack according to any one of claims 1-3, characterized in that: The shell (1) is provided with protrusions (7) on both sides.

5. The waterproof rubber sleeve for a low-voltage interface of a new energy vehicle battery pack according to any one of claims 1-3, characterized in that: The protrusions (8) are annular, uniformly arranged, and arranged at one end close to the shell (1).

6. The waterproof rubber sleeve for a low-voltage interface of a new energy vehicle battery pack according to any one of claims 1-3, characterized in that: The shell (1) is a hollow structure; the inner wall of the shell (1) is provided with a stepped structure.

7. The waterproof rubber sleeve for a low-voltage interface of a new energy vehicle battery pack according to any one of claims 1-3, characterized in that: The air inlet holes (3) and the drainage holes (4) are circular.

8. The waterproof rubber sleeve for a low-voltage interface of a new energy vehicle battery pack according to claim 7, characterized in that: The end of the shell (1) is provided with a chamfer.

9. The waterproof rubber sleeve for a low-voltage interface of a new energy vehicle battery pack according to any one of claims 1-3, characterized in that: The shell (1) is a rubber shell; the interface (2) is a rubber joint.

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