Battery pack interface assembly and waterproof battery pack

Abstract

The utility model relates to battery technology field discloses a kind of battery pack interface components and waterproof battery pack, the battery pack interface component of the utility model, including face shell, inside formation has sealed cavity, the through-hole for host connection is set on face shell, through-hole is communicated with sealed cavity;Sealing structure, be located in sealed cavity, including sealing seat, sealing seat is sealed with face shell Connection to seal sealed cavity, and sealing seat is set with the water guide structure for discharging liquid between through-hole;And terminal, be provided with multiple, multiple terminals are set on sealing seat, and with sealing seat sealed connection.The waterproof battery pack of the utility model, including shell and above-mentioned battery pack interface component, face shell is sealed with shell Connection.The utility model plays good independent waterproof effect.

Description

Technical Field

[0001] This utility model belongs to the field of battery technology, specifically relating to a battery pack interface component and a waterproof battery pack. Background Technology

[0002] Lithium-ion battery packs have become the mainstream power source for power tools due to their high energy density, long cycle life, and lightweight design. The battery pack is connected to the main unit of the power tool via an external output interface for assembly.

[0003] To ensure the reliability and safety of battery packs during outdoor rainy weather, the waterproofing of the battery pack's external output interface currently relies primarily on its connection to the main unit of the battery tool. The battery pack's outer shell has a soft rubber layer injection-molded at the external output interface, while the main unit has a hard rubber layer. When the battery pack is attached to the main unit, the hard rubber layer compresses the soft rubber layer, achieving a waterproofing effect at the battery pack's external output interface.

[0004] However, when the battery pack is not assembled with the main unit, it is difficult to achieve waterproofing at the external output interface of the battery pack. In order to facilitate easy plugging and unplugging with the main unit, the external output interface of the battery pack is usually an open structure. When the battery pack is placed alone, in a water environment, water can easily enter the battery through the external output interface, affecting the normal use of the battery pack and causing safety risks. Utility Model Content

[0005] To address the shortcomings of the prior art, this utility model provides a battery pack interface assembly and a waterproof battery pack. The sealing structure seals the sealed cavity to prevent liquid from entering the battery pack, and the water-guiding structure can quickly drain the liquid accumulated in the sealed cavity. The battery pack interface assembly achieves a good waterproof effect.

[0006] The technical effects to be achieved by this utility model are realized through the following technical aspects: In a first aspect, this utility model provides a battery pack interface assembly, including a front shell with a sealed cavity formed on its inner side, a through hole for connecting to a host on the front shell, the through hole communicating with the sealed cavity; a sealing structure disposed within the sealed cavity, including a sealing seat, the sealing seat being sealedly connected to the front shell to seal the sealed cavity, a water-guiding structure for draining liquid being disposed between the sealing seat and the through hole; and terminals, having a plurality of terminals disposed on the sealing seat and sealedly connected to the sealing seat.

[0007] In some implementations, the sealing seat is provided with waterproof ribs, and the face shell has a groove at the opening of the sealing cavity. The waterproof ribs are located in the grooves and are sealed to the face shell.

[0008] In some implementations, the waterproof reinforcement is positioned around the outside of the terminal.

[0009] In some implementations, the water guiding structure includes a water guiding surface disposed on the sealing seat and inclined toward the through hole, and the liquid in the sealing cavity is discharged along the water guiding surface through the through hole.

[0010] In some implementations, the inclination angle of the water guiding surface is 5~10°.

[0011] In some implementations, the faceplate is provided with a water outlet hole, through which the liquid in the sealed cavity is discharged.

[0012] In some implementations, the sealing seat is provided with a surrounding plate, which encloses a mounting area for installing terminals. The mounting area is provided with multiple partitions, and the mounting area is divided by the multiple partitions to form multiple socket positions. The terminals are inserted into the corresponding socket positions.

[0013] In some implementations, the sealing seat is provided with a retaining plate in the insertion position, and the retaining plate has a retaining groove, and the terminal is engaged with the retaining plate in the retaining groove.

[0014] In some implementations, the sealing seat, the surrounding plate, the partition, and the clamping plate are integrally injection molded.

[0015] Secondly, this utility model provides a waterproof battery pack, including a shell and the battery pack interface assembly described above, wherein the faceplate is sealed to the shell.

[0016] In summary, this utility model has at least the following advantages: 1. The battery pack interface assembly provided by this utility model, when encountering outdoor rainy weather or other environments with high moisture levels, allows rainwater and other liquids to easily enter the sealed cavity through the through-hole. The sealing seat and the faceplate are sealed together to prevent liquid from entering the battery pack interior, thus achieving a waterproof effect. Furthermore, liquid entering the sealed cavity can be discharged to the outside of the faceplate through the water-guiding structure at the through-hole, preventing the battery pack interface assembly from being submerged in water for extended periods, thereby improving the reliability and safety of outdoor rainy weather use. During assembly and use, the main unit's connection end is inserted into the through-hole and electrically connected to the terminal, allowing the battery pack interface assembly to output power externally.

[0017] 2. The waterproof battery pack provided by this utility model prevents liquid from entering the interior of the casing through the battery pack interface assembly. The waterproof battery pack achieves its waterproof effect independently without needing to be used with the main unit. While ensuring convenient plugging and unplugging with the main unit, the waterproof battery pack effectively prevents liquid from entering the interior of the casing, thereby reducing the risk of safety accidents such as fire and explosion caused by short circuits, corrosion, etc. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a battery pack interface component according to a specific embodiment of the present utility model.

[0019] Figure 2 This is a schematic diagram of the structure of the face shell according to a specific embodiment of the present utility model.

[0020] Figure 3 This is a bottom view of a battery pack interface assembly according to a specific embodiment of the present utility model.

[0021] Figure 4 This is a schematic diagram of the sealing structure and terminal of a specific embodiment of the present invention.

[0022] Figure 5 This is a structural schematic diagram of a waterproof battery pack according to a specific embodiment of the present invention.

[0023] Figure 6 This is a schematic diagram of the protection board, cell support, and battery pack according to a specific embodiment of the present invention.

[0024] Marked in the image: 1. Faceplate; 11. Sealing cavity; 12. Through hole; 13. Groove; 14. Water outlet; 15. Outer bevel; 16. Vent hole; 161. Waterproof and breathable membrane; 17. Inspection hole; 171. Sealing screw; 2. Sealing structure; 21. Sealing seat; 22. Waterproof rib; 23. Enclosure; 231. Installation area; 24. Partition; 241. Socket; 25. Clamping plate; 251. Slot; 3. Water guiding structure; 31. Water guiding surface; 4. Terminal; 5. Outer casing; 51. Protection board; 52. Cell support; 53. Battery pack. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are some, but not all, of the embodiments of this utility model.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0027] Example 1: Please see Figures 1-4 The battery pack interface assembly of this utility model includes a face shell 1, and a sealing cavity 11 is formed inside the face shell 1. Specifically, the face shell 1 includes a main body and an external protrusion. The external protrusion is raised relative to the main body. The sealing cavity 11 is a cavity formed by the protrusion of the external protrusion. The sealing cavity 11 is located higher than the main body, which is conducive to the discharge of liquid in the sealing cavity 11.

[0028] Please see Figures 1-3 The faceplate 1 has a through hole 12 for connecting the host. The through hole 12 is connected to the sealing cavity 11. The connecting end of the host is inserted into the sealing cavity 11 through the through hole 12, and the battery pack interface assembly is assembled with the host.

[0029] The faceplate 1 has a sealing structure 2 inside the sealing cavity 11. The sealing structure 2 includes a sealing seat 21, which is sealed to the faceplate 1 to seal the sealing cavity 11. The sealing seat 21 has multiple terminals 4, which are metal terminals and are inserted through the sealing seat 21. The terminals 4 are sealed to the sealing seat 21.

[0030] Please combine Figure 4 In a preferred embodiment, the sealing seat 21 is provided with a waterproof rib 22. Specifically, the waterproof rib 22 may be annular to surround the outer side of multiple terminals 4. The faceplate 1 has a groove 13 at the opening of the sealing cavity 11, and the waterproof rib 22 is disposed in the groove 13 and sealed to the faceplate 1. In some specific embodiments, the waterproof rib 22 and the inner wall of the groove 13 can be sealed by injecting sealant or by using a sealing ring. The sealing ring is disposed between the waterproof rib 22 and the inner wall of the groove 13, and the sealing ring and the groove 13 are interference fit. The sealing seat 21 achieves a sealed connection with the faceplate 1 through the waterproof rib 22, making it difficult for liquid in the sealing cavity 11 to enter the interior of the battery pack.

[0031] In a preferred embodiment, the sealing seat 21 is provided with a surrounding plate 23, which is specifically a U-shaped plate. The surrounding plate 23 encloses and forms a mounting area 231 for mounting the terminal 4, and the terminal 4 is inserted into the mounting area 231. The sealing seat 21 is provided with a plurality of partitions 24 in the mounting area 231. The partitions 24 are specifically arranged vertically and divide the mounting area 231 into a plurality of socket positions 241. The terminal 4 is placed in the corresponding socket position 241. The socket position 241 is corresponding to the through hole 12, which facilitates the correct insertion of the host's connection end and the connection with the terminal 4.

[0032] Furthermore, the sealing seat 21 has a retaining plate 25 within the insertion position 241. The retaining plate 25 has a slot 251. The terminal 4 is bent to form an angle that matches the slot 251, allowing it to engage with the retaining plate 25 within the slot 251, thus fixing the terminal 4 in place. The arrangement of the surrounding plate 23, retaining plate 25, and partition 24 helps ensure the stability of the terminal 4 and improves the overall structural strength. Simultaneously, the terminal 4, after being bent to form an angle, connects by clamping the connection end of the main unit, improving the stability of the connection between the main unit and the battery pack interface assembly.

[0033] In some specific embodiments, the enclosure 23, partition 24 and clamping plate 25 are integrally injection molded. During the processing, the terminal 4 can be inserted into the sealing seat 21 first. The sealing seat 21 and the terminal 4 are formed by in-mold injection molding to form the enclosure 23, partition 24 and clamping plate 25. The terminal 4 can achieve a sealed connection with the sealing seat 21, which has a good waterproof effect.

[0034] Furthermore, a water-guiding structure 3 for draining liquid is provided between the sealing seat 21 and the through hole 12. Specifically, the water-guiding structure 3 enables rapid drainage of liquid between the enclosure 23 and the through hole 12. When the battery pack interface assembly is removed from the water, rainwater can be quickly drained through the water-guiding structure 3 into the through hole 12, making operation convenient.

[0035] In this embodiment, when encountering outdoor rainy weather or other scenarios, rainwater or other liquids can easily enter the sealed cavity 11 through the through hole 12, and the battery pack interface assembly may even be submerged in water. The sealing seat 21 is sealed to the front shell 1 through the waterproof rib 22, which can prevent liquid from leaving the sealed cavity 11 and entering the interior of the battery pack. The sealed cavity 11 is a sealed space that restricts further liquid inflow into the battery pack. The sealing structure 2 achieves a good waterproof effect, with a waterproof rating of IPX6. Compared with traditional battery pack external output interfaces, the battery pack interface assembly of this utility model can achieve independent waterproof effect while ensuring portable plug-and-play with the host, improving the reliability and safety of use in outdoor rainy environments.

[0036] Example 2: The difference between this embodiment and Embodiment 1 is that this embodiment further optimizes the structure of the water-guiding structure 3 of this utility model. Please refer to [link / reference]. Figure 4 and Figure 5 .

[0037] The water guiding structure 3 in this embodiment includes a water guiding surface 31, which is disposed on the sealing seat 21. Specifically, multiple terminals 4 pass through the water guiding surface 31. The water guiding surface 31 is inclined and slopes towards the through hole 12, so that the liquid entering the sealing cavity 11 can be quickly discharged along the water guiding surface 31 through the through hole 12. In some specific embodiments, the inclination angle of the water guiding surface 31 is 5~10°, which is beneficial to the injection molding of the sealing seat 21 and plays a role in guiding the liquid out. In this embodiment, the water guiding surface 31 can specifically be 5°.

[0038] In a preferred embodiment, the faceplate 1 has a water outlet 14, through which liquid in the sealed cavity 11 is discharged. Specifically, the water outlet 14 can be a circular hole and multiple holes can be provided. It is understood that this is not a specific limitation on the number and shape of the water outlet 14, and those skilled in the art can adjust it according to actual drainage needs. The water outlet 14 can be located on the side of the sealing seat 21 away from the through hole 12, so that the liquid in the sealed cavity 11 can flow out from both sides simultaneously from the water outlet 14 and the water guiding surface 31, improving drainage efficiency and ensuring safety in use.

[0039] Furthermore, the faceplate 1 includes an outer inclined surface 15, which is inclinedly disposed at the water outlet 14. When the battery pack interface assembly is poured out, the liquid in the sealed cavity 11 can be quickly discharged from the water outlet 14 along the outer inclined surface 15.

[0040] Example 3: This embodiment, based on the above embodiments, provides a waterproof battery pack. Please refer to [link / reference]. Figure 5 and Figure 6 .

[0041] A waterproof battery pack includes a housing 5 and a battery pack interface assembly, which is sealed to the housing 5. Specifically, the front cover 1 is sealed to the housing 5, a sealing ring is provided between the front cover 1 and the housing 5, and they are assembled by bolts. This makes it difficult for moisture to enter the interior of the housing 5 from the connection between the front cover 1 and the housing 5, thus providing a certain degree of waterproofing.

[0042] A protective plate 51 is provided inside the outer casing 5. A sealing seat 21 is sealed to the protective plate 51. Specifically, the sealing seat 21 can be welded to the protective plate 51. The terminal 4 includes a connecting end, which passes through the sealing seat 21 and connects to the protective plate 51. A cell support 52 is provided on the side of the protective plate 51 away from the sealing seat 21. A battery pack 53 is provided inside the cell support 52 and is electrically connected to the protective plate 51. The arrangement of the protective plate 51 and the battery pack 53 is known to those skilled in the art and is feasible, and will not be described in detail in this embodiment.

[0043] In a preferred embodiment, the faceplate 1 has a vent 16, which is specifically a circular through hole. A waterproof and breathable membrane 161 is disposed within the vent 16 on the faceplate 1. The waterproof and breathable membrane 161 can be adhered to the faceplate 1. Gas flows through the waterproof and breathable membrane 161, while moisture is blocked from the outside of the faceplate 1 by the waterproof and breathable membrane 161. The breathability through the waterproof and breathable membrane 161 helps to solve the problem of deformation of the sealed faceplate 1 and outer shell 5 caused by changes in air pressure or temperature. The method of using the waterproof and breathable membrane 16 is known to those skilled in the art and is feasible, and will not be described in detail in this embodiment.

[0044] Furthermore, the front cover 1 has a test hole 17 on one side of the vent 161. During the production of the waterproof battery pack, the airtightness of the front cover 1 and the outer shell 5 after sealing is tested through the test hole 17. A sealing screw 171 is installed in the test hole 17, and the sealing screw 171 is threadedly connected to the front cover 1, which plays a certain role in waterproofing.

[0045] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0046] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0047] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply 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 tilted.

[0048] In this invention, unless otherwise expressly specified and limited, "above or below" the first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0049] Although the description of this utility model has been given in conjunction with the specific embodiments described above, it is obvious to those skilled in the art that many substitutions, modifications, and variations can be made based on the above description. Therefore, all such substitutions, modifications, and variations are included within the spirit and scope of the appended claims.

Claims

1. A battery pack interface assembly, characterized in that, include The face shell (1) has a sealed cavity (11) formed on its inner side. The face shell (1) has a through hole (12) for connecting to the host. The through hole (12) communicates with the sealed cavity (11). A sealing structure (2), disposed within the sealing cavity (11), includes a sealing seat (21), the sealing seat (21) being sealed to the face shell (1) to seal the sealing cavity (11), and a water-guiding structure (3) for discharging liquid being provided between the sealing seat (21) and the through hole (12); and Terminals (4) are provided in multiples, and the multiple terminals (4) are disposed on the sealing seat (21) and are sealed to the sealing seat (21).

2. The battery pack interface assembly according to claim 1, characterized in that, The sealing seat (21) is provided with a waterproof rib (22), and the face shell (1) has a groove (13) at the opening of the sealing cavity (11). The waterproof rib (22) is located in the groove (13) and is sealed to the face shell (1).

3. The battery pack interface assembly according to claim 2, characterized in that, The waterproof reinforcement (22) surrounds the outside of the terminal (4).

4. The battery pack interface assembly according to claim 1, characterized in that, The water guiding structure (3) includes a water guiding surface (31), which is disposed on the sealing seat (21) and inclined toward the through hole (12). The liquid in the sealing cavity (11) is discharged along the water guiding surface (31) through the through hole (12).

5. The battery pack interface assembly according to claim 4, characterized in that, The inclination angle of the water guiding surface (31) is 5~10°.

6. The battery pack interface assembly according to claim 1 or 4, characterized in that, The faceplate (1) is provided with a water outlet (14), and the liquid in the sealed cavity (11) is discharged through the water outlet (14).

7. The battery pack interface assembly according to claim 1, characterized in that, The sealing seat (21) is provided with a surrounding plate (23), which surrounds and forms an installation area (231) for installing the terminal (4). Multiple partitions (24) are provided in the installation area (231), and multiple socket positions (241) are formed by the multiple partitions (24). The terminal (4) is inserted into the corresponding socket position (241).

8. The battery pack interface assembly according to claim 7, characterized in that, The sealing seat (21) has a retaining plate (25) in the insertion position (241), and a retaining groove (251) is provided on the retaining plate (25). The terminal (4) is engaged with the retaining plate (25) in the retaining groove (251).

9. The battery pack interface assembly according to claim 8, characterized in that, The sealing seat (21), the surrounding plate (23), the partition plate (24), and the clamping plate (25) are integrally injection molded.

10. A waterproof battery pack, characterized in that, Includes a housing (5) and a battery pack interface assembly as described in any one of claims 1-9, wherein the faceplate (1) is sealed to the housing (5).

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