Lithium battery discharge port sealing structure

Abstract

The utility model discloses a lithium battery discharge port sealing structure which comprises a battery box body, a sealing ring and a discharge port part, the battery box body extends along a first direction, and a battery storage area is arranged in the battery box body; a discharge port mounting groove is formed in one side of the battery box body along the first direction; the discharge port mounting groove comprises a mounting groove opening; the sealing ring is arranged on the side, away from the battery storage area, of the discharge port mounting groove in the first direction. And the discharge port part and the sealing ring are arranged on the same side, and the discharge port part is inserted into the mounting notch and used for abutting against the sealing ring for sealing. According to the lithium battery discharge port sealing structure provided by the invention, the sealing ring is specially arranged on one side of the discharge port mounting groove and is in close fit with the discharge port part, so that impurities such as moisture and dust can be effectively prevented from entering the battery storage area, the battery is protected from being damaged, and the lithium battery discharge port sealing structure is simple in overall structural design, easy to produce on a large scale and favorable for reducing the manufacturing cost.

Description

Technical Field

[0001] The utility model relates to the technical field of electric vehicles, and particularly relates to a sealing structure for a lithium battery discharge port. Background Art

[0002] Lithium-ion batteries are widely used in the market due to their high energy, pollution-free, memory-free effect, and light weight. When a lithium battery is applied to an electric bicycle, it only needs to insert the plug on the vehicle into the discharge port on the battery pack. However, since the installation positions of the battery packs on the electric vehicle are completely different, when the vehicle is running in the rain, there will be splashing mud and water at the plug position. If not properly handled, external water can easily enter the battery pack through the charging and discharging port, thus damaging the battery pack. In the prior art, the commonly used method is to apply a large amount of glue on the back of the charging and discharging port. However, although this method can solve the waterproof problem, the cost is very high. Moreover, after replacing the charging and discharging port, it will result in not only a very large amount of sealant being used, but also great difficulty in the process of removing the discharge port, consuming a large amount of time and all the sealant being damaged, resulting in the problem of no waterproof effect. Content of the Utility Model

[0003] To overcome the above-mentioned drawbacks, the purpose of the utility model is to provide a sealing structure for a lithium battery discharge port to solve the problems of large amount of glue used and difficulty in removing the discharge port caused by applying glue on the back of the charging and discharging port as mentioned in the above background art.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is a sealing structure for a lithium battery discharge port, including:

[0005] A battery box body, extending along a first direction, with a battery storage area provided inside; on one side of the battery box body along the first direction, there is a discharge port installation groove; the discharge port installation groove includes an installation groove opening;

[0006] A sealing ring, arranged along the first direction on the side of the discharge port installation groove away from the battery storage area;

[0007] A discharge port part, arranged on the same side as the sealing ring and inserted into the installation groove opening for abutting and sealing with the sealing ring.

[0008] The sealing structure of the lithium battery discharge port provided by the present utility model has a sealing ring specifically arranged on one side of the discharge port mounting groove and closely cooperates with the discharge port part, which can effectively prevent impurities such as moisture and dust from entering the battery storage area and protect the battery from damage. The discharge port part is arranged on the same side as the sealing ring and is inserted into the mounting groove opening, which is convenient for disassembly and replacement in design and facilitates daily maintenance and battery replacement work. The structural design of this solution is simple and easy to mass-produce, which helps to reduce the manufacturing cost. At the same time, it provides an effective sealing solution. Due to the existence of the sealing ring, the adaptability of the lithium battery in different environments can be improved. For example, the performance and life of the battery can be maintained in a humid or dusty environment.

[0009] In some embodiments, along the first direction, a step portion is provided on the side of the mounting groove opening facing the sealing ring.

[0010] An interference portion corresponding to the mounting groove opening is provided at the bottom of the sealing ring; the interference portion is correspondingly arranged inside the step portion and is used for when the discharge port part is inserted into the mounting groove opening, the interference portion is in interference fit with the step portion.

[0011] Adopting the above technical solution, the existence of the step portion provides a stable support point for the interference portion, ensuring that the sealing ring can still maintain its position and shape when subjected to external forces, thereby maintaining the sealing effect. And the interference fit between the step portion and the interference portion can provide better sealing performance to prevent impurities such as liquid and dust from entering the interior of the battery box through the discharge port part. In addition, when the discharge port part is inserted into the mounting groove opening, the interference fit between the interference portion and the step portion simplifies the assembly process because this fit can automatically adjust the position and reduce the need for precise alignment.

[0012] In some embodiments, along the second direction, the thickness of the interference portion is at least 0.5 mm, and the first direction and the second direction are perpendicular to each other.

[0013] Adopting the above technical solution, the interference portion has sufficient thickness, which can improve the anti-deformation ability of the sealing ring when subjected to installation force or environmental pressure, reduce the compression deformation of the sealing ring, and the minimum thickness of the interference portion ensures sufficient interference amount with the step portion, thereby ensuring good interference fit, enhancing the sealing effect, and also helping to resist displacement or deformation caused by temperature changes, mechanical vibrations, etc.

[0014] In some embodiments, along the first direction, the length of the interference portion is less than the depth of the mounting groove opening.

[0015] Adopting the above technical solution, the interference part does not completely fill the depth of the installation notch, allowing a certain degree of axial movement, which can provide a more flexible sealing environment to adapt to minor dimensional changes or component tolerances. In addition, by controlling the length of the interference part, the fit with the step part can be optimized to achieve a better sealing effect, while avoiding the degradation of the sealing ring performance caused by excessive compression.

[0016] In some embodiments, along the first direction, the discharge port part and the discharge port installation groove are provided with corresponding installation holes.

[0017] Adopting the above technical solution, the discharge port part is fixed to the battery housing by setting bolts at the installation holes.

[0018] In some embodiments, the sealing ring is made of rubber material.

[0019] Adopting the above technical solution, rubber has good elasticity, can closely fit the contact surface, can provide a stable sealing effect, effectively prevent the leakage of liquids, gases and other substances, and can still maintain its shape and performance even after multiple assemblies and dis assemblies. And compared with other high-performance sealing materials, rubber usually has a lower cost and is economical and practical. Description of the Drawings

[0020] Figure 1 is a perspective view of an embodiment of a sealing structure for a lithium battery discharge port of the present utility model;

[0021] Figure 2 is a partial structural schematic diagram of an embodiment of a sealing structure for a lithium battery discharge port of the present utility model Figure 1 ;

[0022] Figure 3 is a partial structural schematic diagram of an embodiment of a sealing structure for a lithium battery discharge port of the present utility model Figure 2 ;

[0023] Figure 4 is a perspective view of the sealing ring of an embodiment of a sealing structure for a lithium battery discharge port of the present utility model;

[0024] In the figure:

[0025] 1. Sealing structure for lithium battery discharge port; 2. Battery box body; 20. Battery storage area; 21. Discharge port installation groove; 22. Installation notch; 23. Step part; 3. Sealing ring; 30. Interference part; 4. Discharge port part; 40. Installation hole. Detailed Embodiments

[0026] The following elaborates on the preferred embodiments of the present utility model in conjunction with the accompanying drawings, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making the protection scope of the present utility model more clearly defined.

[0027] The following specific embodiments illustrate the implementation manners of the present utility model. Those skilled in this technology can easily understand other advantages and effects of the present utility model from the content disclosed in this specification.

[0028] It should be noted that in the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance. Terms such as "horizontal", "vertical", "hanging" do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0029] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0030] In the description of this application, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing this application and simplifying the description. Without contrary explanations, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the protection scope of this application; the orientation words "inner, outer" refer to the inside and outside relative to the contour of each component itself.

[0031] Refer to Figures 1 to 4 ,Figure 1 A three-dimensional diagram of a lithium battery discharge port sealing structure 1 provided in an embodiment of the utility model is shown; Figure 2 The structure diagram of a lithium battery discharge port sealing structure 1 provided by the embodiment of the utility model is shown. Figure 1 ; Figure 3 The structure diagram of a lithium battery discharge port sealing structure 1 provided by the embodiment of the utility model is shown. Figure 2 ; Figure 4 A three-dimensional diagram of a sealing ring 3 in a lithium battery discharge port sealing structure 1 provided in an embodiment of the utility model is shown.

[0032] like Figures 1 to 4 As shown, the technical solution provided by the present application is a lithium battery discharge port sealing structure 1, comprising a battery box 2, a sealing ring 3 and a discharge port 4, wherein the battery box 2 is along a first direction ( Figure 1 The battery box 2 is provided with a discharge port mounting groove 21 on one side along the first direction; the discharge port mounting groove 21 includes a mounting groove 22; the sealing ring 3 is provided on the side of the discharge port mounting groove 21 away from the battery storage area 20 along the first direction; the discharge port portion 4 is provided on the same side as the sealing ring 3 and is inserted into the mounting groove 22 for abutting and sealing with the sealing ring 3.

[0033] The lithium battery discharge port sealing structure 1 provided in the present application has a sealing ring 3 which is specially arranged on one side of the discharge port mounting groove 21 and is tightly matched with the discharge port portion 4, which can effectively prevent moisture, dust and other impurities from entering the battery storage area 20 and protect the battery from damage. The discharge port portion 4 is arranged on the same side as the sealing ring 3 and is plugged into the mounting groove 22. The design is convenient for disassembly and replacement, which is convenient for daily maintenance and battery replacement. The structural design of this solution is simple, easy to mass produce, and helps to reduce manufacturing costs. At the same time, it provides an effective sealing solution. Due to the presence of the sealing ring 3, the adaptability of the lithium battery in different environments can be improved, for example, the performance and life of the battery can be maintained in a humid or dusty environment.

[0034] In some embodiments, reference Figures 1 to 4 Along the first direction, a step portion 23 is provided on one side of the installation slot 22 facing the sealing ring 3 .

[0035] The bottom of the sealing ring 3 is provided with an interference portion 30 corresponding to the installation slot 22 ; the interference portion 30 is correspondingly provided on the inner side of the step portion 23 , so that when the discharge port 4 is inserted into the installation slot 22 , the interference portion 30 and the step portion 23 are interference-fitted.

[0036] Exemplarily, the presence of the step portion 23 provides a stable support point for the interference portion 30, ensuring that the sealing ring 3 can maintain its position and shape when subjected to external forces, thereby maintaining the sealing effect. Moreover, the interference fit between the step portion 23 and the interference portion 30 can provide better sealing performance, preventing impurities such as liquid and dust from entering the interior of the battery box 2 through the discharge port portion 4. In addition, when the discharge port portion 4 is inserted into the mounting slot opening 22, the interference fit between the interference portion 30 and the step portion 23 simplifies the assembly process because this fit can automatically adjust the position and reduce the need for precise alignment.

[0037] In some embodiments, referring to Figures 1 to 4 , along the second direction ( Figure 1 shown as the Z direction in

[0038] ), the thickness of the interference portion 30 is at least 0.5 mm, and the first direction and the second direction are perpendicular to each other. Exemplarily, the interference portion 30 has sufficient thickness to improve the anti-deformation ability of the sealing ring 3 when subjected to installation force or environmental pressure, reduce the compression deformation of the sealing ring 3, and the minimum thickness of the interference portion 30 ensures sufficient interference amount with the step portion 23, thereby ensuring a good interference fit, enhancing the sealing effect, and also helping to resist displacement or deformation caused by temperature changes, mechanical vibrations, etc.

[0039] In some embodiments, referring to Figures 1 to 4 , along the first direction, the length of the interference portion 30 is less than the depth of the mounting slot opening 22.

[0040] Exemplarily, the interference portion 30 does not completely fill the depth of the mounting slot opening 22, allowing a certain degree of axial movement, which can provide a more flexible sealing environment to adapt to minor dimensional changes or component tolerances. In addition, by controlling the length of the interference portion 30, the fit with the step portion 23 can be optimized to achieve better sealing effect while avoiding performance degradation of the sealing ring 3 caused by excessive compression.

[0041] In some embodiments, referring to Figures 1 to 4 , along the first direction, the discharge port portion 4 and the discharge port mounting slot 21 are provided with corresponding mounting holes 40.

[0042] Exemplarily, the discharge port portion 4 is fixed to the battery housing by setting bolts at the mounting holes 40.

[0043] In some embodiments, referring to Figures 1 to 4 , the sealing ring 3 is made of rubber material. Exemplarily, rubber has good elasticity, can closely fit the contact surface, can provide a stable sealing effect, effectively prevent the leakage of liquid, gas and other substances, and can still maintain its shape and performance even after multiple assemblies and dismountings. And compared with other high-performance sealing materials, rubber usually has a lower cost and is economical and practical.

[0044] The above embodiments are only for illustrating the technical concept and features of the present utility model, and the purpose is to enable those who are familiar with this technology to understand the content of the present utility model and implement it. However, it cannot be used to limit the protection scope of the present utility model. Any equivalent changes or modifications made according to the spirit and essence of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A sealing structure for the discharge port of a lithium battery, characterized in that, Comprising: A battery box body, extending along a first direction, with a battery storage area provided inside; a discharge port mounting groove is provided on one side of the battery box body along the first direction; the discharge port mounting groove includes a mounting groove opening; A sealing ring, arranged along the first direction on the side of the discharge port mounting groove away from the battery storage area; A discharge port part, arranged on the same side as the sealing ring and inserted into the mounting groove opening for abutting and sealing with the sealing ring.

2. The sealing structure of the lithium battery discharge port according to claim 1, wherein, Along the first direction, a step part is provided on the side of the mounting groove opening facing the sealing ring.

3. The sealing structure of the lithium battery discharge port according to claim 2, characterized in that, An interference part corresponding to the mounting groove opening is provided at the bottom of the sealing ring; the interference part is correspondingly arranged inside the step part for interference fit between the interference part and the step part when the discharge port part is inserted into the mounting groove opening.

4. The sealing structure of the lithium battery discharge port according to claim 3, wherein, Along a second direction, the thickness of the interference part is at least 0.5 mm, and the first direction and the second direction are perpendicular to each other.

5. The sealing structure of the lithium battery discharge port according to claim 4, wherein, Along the first direction, the length of the interference part is less than the depth of the mounting groove opening.

6. The sealing structure of the lithium battery discharge port according to claim 4, characterized in that, Along the first direction, the discharge port part and the discharge port mounting groove are provided with corresponding mounting holes.

7. The sealing structure of the lithium battery discharge port according to claim 4, characterized in that The sealing ring is made of rubber material.

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