Sealed waterproof new energy automobile battery shell
By designing an inclined top cover, drainage channels, and drain holes on the battery casing of new energy vehicles, and combining them with sealing and separating components, the problem of insulation failure caused by liquid water intrusion is solved, achieving rapid drainage and effective sealing, and ensuring the safety and long life of the battery casing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HAIMEN YUANXIANG PLASTICS TECH CO LTD
- Filing Date
- 2025-03-28
- Publication Date
- 2026-04-17
AI Technical Summary
The battery casing of new energy vehicles is susceptible to liquid water intrusion in complex and variable environments, which can lead to insulation failure, performance degradation, or even safety accidents.
A sealed and waterproof battery casing for new energy vehicles is designed, which adopts an inclined top cover, drainage channels and drain holes, combined with sealing components and partition components to achieve rapid drainage and effective sealing to prevent water penetration.
It effectively reduces the time that moisture stays on the surface of the battery casing, enhances drainage efficiency, ensures that the inside of the battery casing is dry and safe, and improves the normal operation and lifespan of the battery.
Smart Images
Figure CN224138228U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of battery casing technology, and in particular to a sealed and waterproof battery casing for new energy vehicles. Background Technology
[0002] With increasing global emphasis on environmental protection and sustainable development, new energy vehicles, as an alternative to traditional gasoline-powered vehicles, are developing at an unprecedented pace. One of the core components of new energy vehicles is the battery system, which directly determines the vehicle's range, power performance, and lifespan. New energy vehicle batteries, especially lithium-ion batteries, have advantages such as high energy density, long cycle life, and environmental friendliness, and have become the mainstream battery technology.
[0003] However, new energy vehicle batteries face many challenges in practical applications. Since the battery casing is directly exposed to complex and changing environments such as rain, snow, mud, and moisture, the intrusion of liquid water may cause insulation failure of the internal battery module, leading to short circuits, performance degradation, or even safety accidents. Therefore, improvements are needed. Utility Model Content
[0004] To address the problem of liquid water intruding into the casing, this application provides a sealed and waterproof battery casing for new energy vehicles.
[0005] This application provides a sealed and waterproof battery casing for new energy vehicles, employing the following technical solution:
[0006] A sealed and waterproof battery casing for new energy vehicles includes an upper cover and a lower casing. The lower casing has a hollow interior. The upper cover is located at the opening of the lower casing. The top of the upper cover is tilted to one side. The upper cover has a drainage channel along its edge. Several drainage holes are formed through the drainage channel. A sealing component is provided at the connection between the upper cover and the lower casing. A separating component for separating battery modules is provided inside the lower casing.
[0007] Since the battery casing is directly exposed to complex and changing environments, such as rain, snow, mud, and moisture, the intrusion of liquid water may cause insulation failure of the internal battery module, leading to short circuits, performance degradation, or even safety accidents. By adopting the above technical solution, including an upper cover and a lower casing, the top of the upper cover is tilted to one side, a drainage channel is opened on the upper cover, and a drain hole is opened in the drainage channel. A sealing component is installed at the connection between the upper cover and the lower casing, and a separation component is installed in the lower casing.
[0008] When encountering severe weather such as rain or snow, the liquid water comes into contact with the inclined surface of the top cover. Under the influence of gravity, the water flow can naturally flow along the inclined surface instead of accumulating on the surface of the top cover. This reduces the time that water stays on the top cover and lowers the risk of water penetration. Then, the drainage channel at the edge of the top cover will collect the water flow through the centrifugal force effect and form a curtain-like drainage through the drain hole, which will smoothly drain from the surface of the battery case. At the same time, the sealing component plays a sealing role at the connection between the top cover and the lower casing, effectively blocking the way for water to enter the battery case through the connection gap.
[0009] The design, including the top cover, drainage channels, and drain holes, facilitates rapid drainage and prevents water accumulation. This significantly reduces the time water remains on the top cover, effectively preventing water buildup and lowering the risk of seepage due to prolonged contact. Simultaneously, the efficient flow guidance and curtain-like drainage ensure smooth water flow from the battery casing surface, further enhancing drainage efficiency. Furthermore, the sealing components effectively block water from entering the battery casing through gaps, maintaining dryness and safety even in harsh external environments, thus ensuring normal battery operation and a long lifespan.
[0010] Optionally, the drainage slope of the top of the upper cover ranges from 5 to 8 degrees.
[0011] By adopting the above technical solution, the drainage slope of the top cover is in the range of 5-8°. With the drainage slope set in the range of 5-8°, liquid water can quickly flow down the inclined surface when it comes into contact with the surface of the top cover, effectively reducing the residence time of water on the top cover, further reducing the risk of seepage caused by prolonged contact, and enhancing the flow guiding effect, so that the water flows more smoothly to the drainage channel and drain hole, which helps to keep the surface of the battery case clean and dry.
[0012] Optionally, the sealing assembly includes a guide tenon, which is arranged at the bottom of the upper cover and along the edge of the upper cover. The lower housing has a guide groove for engaging with the guide tenon.
[0013] By adopting the above technical solution, the sealing component includes a guide tenon that fits into a guide groove. The guide tenon and guide groove help to achieve precise positioning and easy assembly, allowing for easy alignment during assembly and improving assembly efficiency and accuracy. At the same time, the tight fit between the guide tenon and the guide groove forms an effective sealing interface, which can prevent moisture, dust and other impurities from entering the battery case through the connection gap, thereby enhancing the sealing performance of the battery case.
[0014] Optionally, one side of the guide tenon is arc-shaped, and the inner wall of the guide groove is adapted to the guide tenon.
[0015] By adopting the above technical solution, one side of the guide tenon is arc-shaped; by setting the shape of the guide tenon, the arc-shaped design can guide and position more smoothly, reduce friction and resistance during assembly, improve assembly accuracy and efficiency, reduce assembly difficulty, and further enhance sealing performance, thereby further improving the sealing performance of the battery case.
[0016] Optionally, a main sealing strip and a secondary sealing strip are provided in the guide groove, and the main sealing strip and the secondary sealing strip are respectively arranged on both sides of the guide tenon. The inner wall of the guide groove is provided with a groove for embedding the main sealing strip and the secondary sealing strip.
[0017] By adopting the above technical solution, the main sealing strip and the secondary sealing strip are installed in the embedding groove of the guide groove; through the setting of the main sealing strip and the secondary sealing strip, the main sealing strip and the secondary sealing strip form a double sealing structure, which greatly improves the waterproof performance of the battery shell, effectively prevents liquid water from entering the battery shell through the connection gap, reduces the leakage points of the sealing interface, and improves the reliability and stability of the seal to adapt to different working conditions and environmental conditions.
[0018] Optionally, the partition assembly includes a plurality of partition plates, a plurality of L-shaped clamping blocks, and two integrated pressure plates. The plurality of partition plates are spaced apart within the lower housing, and the two integrated pressure plates are respectively arranged on both sides of the partition plates. The plurality of L-shaped clamping blocks are all arranged on the two integrated pressure plates, and each pair of L-shaped clamping blocks abuts against both sides of the corresponding partition plate.
[0019] By adopting the above technical solution, the partition assembly includes several partition plates, several L-shaped clamping blocks, and two integrated pressure plates. The partition plates are installed at intervals inside the lower housing, the two integrated pressure plates are installed on both sides of the lower housing, and the L-shaped clamping blocks are pressed against both sides of the partition plates. Through the setting of the partition assembly, the partition plates rationally divide the internal space of the battery housing into multiple independent areas, which helps to optimize the internal layout of the battery housing, improve space utilization, and also assists in waterproofing to a certain extent, preventing the gaps between battery modules from becoming channels for water penetration, and further enhancing the overall waterproof performance of the battery housing.
[0020] Optionally, each of the L-shaped clamping blocks is provided with a fastening bolt for fixing.
[0021] By adopting the above technical solution, the L-shaped clamping block is installed and fixed by fastening bolts; by setting the fastening bolts, the fastening bolts can firmly fix the L-shaped clamping block to the integrated pressure plate, thereby ensuring that the partition plate is stably pressed against the lower housing. At the same time, the fastening bolts make the installation and disassembly process of the L-shaped clamping block simple and quick.
[0022] Optionally, the bottom of the lower housing is provided with a base ring for protection. The base ring is arranged along the circumferential direction of the lower housing, and several semi-circular grooves are formed through the base ring.
[0023] By adopting the above technical solution, the base ring is integrally formed on the bottom of the lower housing, and several semi-circular grooves are opened on the base ring. Through the setting of the base ring and the semi-circular grooves, the base ring provides additional structural support for the entire lower housing, enhances the overall structural strength of the battery housing, enables it to better resist external impacts and vibrations, and ensures the safety of the battery module. At the same time, the opening of the semi-circular grooves also provides space for the arrangement of cables or other pipelines, which facilitates the connection of the battery module.
[0024] In summary, this application includes at least one of the following beneficial technical effects:
[0025] The design, including the top cover, drainage channels, and drain holes, facilitates rapid drainage and prevents water accumulation. This significantly reduces the time water remains on the top cover, effectively preventing water buildup on its surface and lowering the risk of penetration due to prolonged contact. The efficient flow guidance and curtain-like drainage ensure smooth water flow from the battery casing surface, further enhancing drainage efficiency. Furthermore, the sealing components effectively block water from entering the battery casing through gaps, maintaining dryness and safety even in harsh external environments, thus ensuring normal battery operation and long lifespan.
[0026] By setting the drainage slope of the top cover, which is within the range of 5-8°, liquid water can quickly flow down the inclined surface when it comes into contact with the surface of the top cover. This effectively reduces the time that water stays on the top cover, further reducing the risk of seepage caused by prolonged contact. At the same time, it enhances the flow guiding effect, allowing water to flow more smoothly to the drainage channel and drain hole, which helps to keep the surface of the battery case clean and dry.
[0027] By setting up the partition components, the partition panels rationally divide the internal space of the battery case into multiple independent areas, which helps to optimize the internal layout of the battery case, improve space utilization, and also assists in waterproofing to a certain extent, preventing the gaps between battery modules from becoming channels for water penetration, and further enhancing the overall waterproof performance of the battery case. Attached Figure Description
[0028] Figure 1This is a side view of a sealed and waterproof new energy vehicle battery casing according to an embodiment of this application.
[0029] Figure 2 This is a top view of a sealed and waterproof new energy vehicle battery casing according to an embodiment of this application.
[0030] Figure 3 This is an exploded structural diagram of a sealed and waterproof new energy vehicle battery casing according to an embodiment of this application.
[0031] Figure 4 This is a partial cross-sectional view used to illustrate the structure of the sealing assembly in the embodiments of this application.
[0032] Explanation of reference numerals in the attached drawings: 1. Top cover; 2. Lower housing; 3. Drainage channel; 31. Drain hole; 4. Sealing assembly; 41. Guide tenon; 5. Separation assembly; 51. Separation plate; 52. L-shaped clamping block; 53. Integrated pressure plate; 6. Guide groove; 7. Main sealing strip; 8. Secondary sealing strip; 9. Embedding groove; 10. Fastening bolt; 11. Base ring; 12. Semicircular groove. Detailed Implementation
[0033] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.
[0034] This application discloses a sealed and waterproof battery casing for new energy vehicles. (Refer to...) Figure 1 The sealed and waterproof new energy vehicle battery casing includes an upper top cover 1 and a lower casing 2. The lower casing 2 has a hollow structure inside. In this embodiment, the upper top cover 1 is arranged at the opening end of the top of the lower casing 2. The size of the upper top cover 1 is larger than the size of the lower casing 2. At the same time, the surfaces of the upper top cover 1 and the lower casing 2 are coated with a waterproof coating.
[0035] Reference Figure 1 and Figure 2 The top cover 1 is tilted to one side, and the drainage slope of the top of the top cover 1 is 5-8°. This allows liquid water to flow down the inclined surface quickly when it comes into contact with the surface of the top cover 1, effectively reducing the time that water stays on the top cover 1 and further reducing the risk of seepage caused by prolonged contact. At the same time, it enhances the flow guiding effect, allowing water to flow more smoothly to the drainage channel 3 and the drain hole 31, which helps to keep the surface of the battery case clean and dry.
[0036] Reference Figure 1 and Figure 2A drainage channel 3 is formed on the top cover 1. In this embodiment, the drainage channel 3 is opened along the edge of the top cover 1. In this embodiment, the tilting direction of the top cover 1 is consistent with the extension direction of the drainage channel 3, so that the liquid water on the surface flows directionally to the drainage channel 3 along the tilting surface. A plurality of drainage holes 31 are opened through the drainage channel 3. The plurality of drainage holes 31 are arranged sequentially at intervals along the length of the drainage channel 3.
[0037] Reference Figure 3 The bottom of the lower housing 2 is integrally formed with a base ring 11, which is arranged along the circumferential direction of the lower housing 2. Several semi-circular grooves 12 are opened through the base ring 11. The semi-circular grooves 12 are opened sequentially at intervals along the arrangement direction of the base ring 11. The base ring 11 provides additional structural support for the entire lower housing 2, enhances the overall structural strength of the battery housing, and enables it to better resist external impacts and vibrations, ensuring the safety of the battery module. At the same time, the opening of the semi-circular grooves 12 also provides space for the arrangement of cables or other pipelines, which facilitates the connection of the battery module.
[0038] Reference Figure 3 The lower housing 2 is equipped with a partition component 5. In this embodiment, the partition component 5 is used to separate the battery modules. The partition component 5 includes several partition plates 51, several L-shaped pressing blocks 52 and two integrated pressing plates 53. The partition plates 51 are arranged at intervals in the lower housing 2, and the two integrated pressing plates 53 are respectively arranged on both sides of the partition plates 51. The integrated pressing plates 53 are installed in the lower housing 2. In this embodiment, the integrated pressing plates 53 are provided with slots for the partition plates 51 to cooperate with.
[0039] Reference Figure 3 Several L-shaped clamping blocks 52 are respectively installed on two integrated pressure plates 53. Each pair of L-shaped clamping blocks 52 abuts against the two sides of the corresponding partition plate 51. At the same time, each L-shaped clamping block 52 is equipped with a fastening bolt 10 for fixing. The partition plate 51 reasonably divides the internal space of the battery case into multiple independent areas, which helps to optimize the internal layout of the battery case, improve space utilization, and also assists in waterproofing to a certain extent, preventing the gaps between battery modules from becoming channels for water penetration, and further enhancing the overall waterproof performance of the battery case.
[0040] Reference Figure 3 and Figure 4A sealing component 4 is installed at the connection between the upper cover 1 and the lower housing 2. The sealing component 4 includes a guide tenon 41, which is integrally formed on the bottom of the upper cover 1 and arranged along the edge of the upper cover 1. In this embodiment, one side of the guide tenon 41 is arc-shaped. At the same time, a guide groove 6 is provided on the lower housing 2. The inner wall of the guide groove 6 is adapted to the guide tenon 41, and the guide tenon 41 is inserted into the guide groove 6. This helps to achieve precise positioning and easy assembly. It can be easily aligned during assembly, which improves the efficiency and accuracy of assembly. At the same time, the tight fit between the guide tenon 41 and the guide groove 6 forms an effective sealing interface, which can prevent moisture, dust and other impurities from entering the battery case through the connection gap, thereby enhancing the sealing performance of the battery case.
[0041] Reference Figure 4 The guide groove 6 is equipped with a main sealing strip 7 and a secondary sealing strip 8, which are respectively arranged on both sides of the guide tenon 41. The inner wall of the guide groove 6 is provided with a groove 9 for embedding the main sealing strip 7 and the secondary sealing strip 8. The main sealing strip 7 and the secondary sealing strip 8 form a double sealing structure, which greatly improves the waterproof performance of the battery shell, effectively prevents liquid water from entering the battery shell through the connection gap, reduces the leakage points at the sealing interface, and improves the reliability and stability of the seal to adapt to different working conditions and environmental conditions.
[0042] The implementation principle of a sealed and waterproof new energy vehicle battery case in this application embodiment is as follows: When encountering severe weather such as rain and snow, liquid water comes into contact with the inclined surface of the top cover 1. The water flow can naturally flow along the inclined surface under the action of gravity, instead of accumulating on the surface of the top cover 1, which reduces the time that water stays on the top cover 1 and reduces the risk of water penetration. Then, the drainage channel 3 at the edge of the top cover 1 collects the water flow through the centrifugal force effect and forms a curtain-like drainage through the drain hole 31, which is smoothly discharged from the surface of the battery case. At the same time, the sealing component 4 plays a sealing role at the connection between the top cover 1 and the lower housing 2, effectively blocking the way for water to enter the battery case through the connection gap.
[0043] The top cover 1, drainage channel 3, and drain hole 31 facilitate rapid drainage and prevent water accumulation, significantly reducing the time water stays on the top cover 1 and effectively preventing water accumulation on its surface. This reduces the risk of seepage due to prolonged contact. Simultaneously, the efficient flow guidance and curtain-like drainage ensure smooth water flow from the battery casing surface, further enhancing drainage efficiency. Furthermore, the sealing component 4 effectively blocks water from entering the battery casing through connection gaps, maintaining dryness and safety inside the battery casing even in harsh external environments, ensuring normal battery operation and long lifespan.
[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A sealed waterproof new energy vehicle battery case, characterized in that: The device includes an upper cover and a lower housing. The lower housing has a hollow interior. The upper cover is located at the opening of the lower housing. The top of the upper cover is tilted to one side. The upper cover has a drainage channel along its edge. Several drain holes are formed through the drainage channel. A sealing assembly is provided at the connection between the upper cover and the lower housing. A separating assembly for separating battery modules is provided inside the lower housing.
2. The sealed waterproof new energy vehicle battery case according to claim 1, characterized in that: The drainage slope of the top of the upper cover ranges from 5 to 8 degrees.
3. The sealed waterproof new energy vehicle battery case according to claim 1, characterized in that: The sealing assembly includes a guide tenon, which is arranged at the bottom of the upper cover and along the edge of the upper cover. The lower housing has a guide groove for engaging with the guide tenon.
4. The sealed waterproof new energy vehicle battery case according to claim 3, characterized in that: One side of the guide tenon is arc-shaped, and the inner wall of the guide groove is adapted to the guide tenon.
5. The sealed waterproof new energy vehicle battery case according to claim 3, characterized in that: The guide groove is provided with a main sealing strip and a secondary sealing strip, which are respectively arranged on both sides of the guide tenon. The inner wall of the guide groove is provided with a groove for embedding the main sealing strip and the secondary sealing strip.
6. The sealed waterproof new energy vehicle battery case according to claim 1, characterized in that: The partition assembly includes several partition plates, several L-shaped clamping blocks, and two integrated pressure plates. The partition plates are spaced apart inside the lower housing. The two integrated pressure plates are respectively arranged on both sides of the partition plates. The L-shaped clamping blocks are arranged on the two integrated pressure plates, and each pair of L-shaped clamping blocks abuts against the sides of the corresponding partition plates.
7. The sealed waterproof new energy vehicle battery case according to claim 6, characterized in that: Each of the L-shaped clamping blocks is provided with a fastening bolt for fixing.
8. The sealed waterproof new energy vehicle battery case according to claim 1, characterized in that: The bottom of the lower housing is provided with a base ring for protection. The base ring is arranged along the circumferential direction of the lower housing, and several semi-circular grooves are opened through the base ring.