Waterproofing devices and marine battery boxes

Abstract

This invention provides a waterproof device and a marine battery box, belonging to the field of marine battery swapping technology. The waterproof device is closable and mounted on the battery box to protect the electrical connector. The waterproof device includes a mounting part and a waterproof part, with the mounting part positioned near the electrical connector of the battery box. The waterproof part is slidably mounted on the mounting part, forming a sealed space covering the electrical connector. Movement of the waterproof part opens the sealed space for electrical connection. Because the waterproof device is positioned near the electrical connector of the battery box, when the electrical connector needs to mate with the device connector, the waterproof device moves and opens the connector's mating interface; when the electrical connector does not need to mate with the device connector, the waterproof device moves and closes the connector's mating interface, preventing rainwater from entering the electrical connector and improving the safety of the battery box during outdoor charging operations.

Description

Technical Field

[0001] This invention relates to the field of ship battery swapping technology, and in particular to a waterproof device and a ship battery box. Background Technology

[0002] The current strategy of converting oil to electricity has been extended from land transportation to sea transportation. Since inland river ports do not have the basic conditions for building charging piles, battery swapping has become the main technical route for electric ships. Charging stations are built at a certain distance from the port, and vehicles are used to deliver battery boxes short distances between the charging station and the port terminal.

[0003] Because ships navigate in waterways, they have high demands for battery endurance, necessitating the installation of extra-large battery packs. Furthermore, to enable quick battery swapping, these packs are typically locked to the ship's deck, placing them in an open-air environment; charging these large battery packs also takes place outdoors. Therefore, external environmental factors pose significant safety hazards to the battery packs themselves and their charging and discharging processes, increasing the requirements for their waterproof performance. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the defects of low waterproof performance and safety hazards of existing ship battery boxes, and to provide a waterproof device and a ship battery box.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution:

[0006] A waterproof device, closable and installable on a battery box to protect electrical connectors, the waterproof device comprising:

[0007] The mounting section is located near the electrical connector of the battery box;

[0008] A waterproof part is slidably disposed on the mounting part, thereby forming a sealed space covering the electrical connector. The sealed space is opened by moving the waterproof part to make an electrical connection.

[0009] In this design, the sealed space formed by the mounting section and the waterproof section protects the electrical connector, preventing rainwater from entering and improving the battery box's waterproof and safety performance in outdoor environments. When the electrical connector needs to mate with the device connector to perform charging and discharging operations, the sliding waterproof section can meet the needs at any time. It can be opened for electrical connection. The structure is simple and can significantly improve the battery box's waterproofness and safety.

[0010] Preferably, the mounting portion includes a fixed frame fixedly disposed on the battery box at a predetermined distance from the periphery of the electrical connector, and support plates formed on both sides of the front end face of the fixed frame along the moving direction of the waterproof portion. The fixed frame forms a slide for the waterproof portion to move at the support plates. The waterproof portion includes a waterproof door movably disposed along the slide, and the waterproof door has a fastening portion on both sides extending from the outside of the support plate into the slide.

[0011] In this solution, a sliding track for the waterproof door is formed on the fixed frame around the electrical connector. The waterproof door has a latching part that extends into the track, ensuring that the waterproof door will not come loose from the track and ensuring the stability of the connection between the waterproof door and the mounting part. This provides good protection for the electrical connector on the battery box, prevents rainwater from entering the electrical connector, and improves the safety of the battery box when operating outdoors.

[0012] Preferably, the mounting part further includes a diversion plate and an inclined baffle plate disposed on the top of the support plate and fixed to the end face of the top frame of the fixed frame. A diversion groove is formed between the diversion plate and the top frame of the fixed frame. The diversion groove is used to guide water towards the support plate. The lower end of the inclined baffle plate is connected to the top frame, and the upper end of the inclined baffle plate is connected to the upper end of the diversion plate. The inclined baffle plate is used to limit the waterproof door from the upper side.

[0013] In this design, rainwater falling from the top collects in a diversion channel formed between the diversion plate and the fixed frame, flows along the diversion channel into a slide between the fixed frame and the support plate, and is then discharged along the slide. In addition, when the waterproof door moves along the slide to the sealed space where the electrical connector is closed, the limiting plate formed on the top surface of the waterproof door abuts against the inclined surface of the inclined baffle, thereby limiting the waterproof door from above and preventing it from shaking relative to the fixed frame, which could affect the waterproof performance or generate noise, thus improving the stability of the waterproof door.

[0014] Preferably, the top surface of the waterproof door has waterproof protrusions extending upward on both sides and the outer side opposite to the battery box to limit and guide the water flow.

[0015] In this design, the top surface of the waterproof door is provided with waterproof protrusions on three sides, so that rainwater flows down from the side closest to the battery box without waterproof protrusions, flows down the downward-extending limiting plate into the diversion groove and slide of the installation part, and is discharged through the slides on both sides, thus preventing rainwater from accumulating on the top surface of the waterproof door and improving waterproof performance.

[0016] Preferably, the waterproof flange on the outer side opposite to the battery box is configured to be higher than the waterproof flanges on both sides to form a vertical plate structure, through which a waterproof door on an external electrical connection device is attached so as to facilitate simultaneous opening and closing.

[0017] In this solution, the external electrical connection device also has a waterproof door, which is attached to the vertical plate structure formed by the waterproof protrusion opposite to the battery box. When the waterproof door on the battery box is opened or closed, it can drive the waterproof door of the external electrical connection device to open or close together, so that the two waterproof doors move synchronously, improving the opening and closing efficiency while ensuring waterproof sealing.

[0018] Preferably, the mounting part further includes a base plate fixed below the electrical connector and connected to the bottom frame of the fixing frame, the base plate having an upwardly formed limiting groove for limiting the waterproof door.

[0019] In this design, the limiting groove formed by the base plate enables the waterproof door to be limited from the bottom. Combined with the upper limiting function, it further prevents the waterproof door from shaking relative to the fixed frame, ensuring the stability of the waterproof door on the fixed frame and ensuring waterproof performance.

[0020] Preferably, the base plate includes a flat plate attached to the lower surface of the base frame and a longitudinal plate extending upward from the end face of the flat plate. The limiting groove is formed between the longitudinal plate and the support plate. The end of the longitudinal plate extends outward to form a guide portion, which is used to guide the waterproof door.

[0021] In this design, the opening of the limiting groove gradually increases from bottom to top, and the opening of the guide part is further enlarged. When the waterproof door is closed, the falling waterproof door first contacts the guide part and gradually moves into the limiting groove between the longitudinal plate and the support plate under the guidance of the guide part, thereby realizing the lower limiting function of the waterproof door.

[0022] Preferably, the waterproofing device further includes a locking mechanism disposed on the upper surface of the bottom frame, the locking mechanism including a retractable pin for engaging with a locking hole on the waterproof door to lock or unlock the waterproof door.

[0023] In this solution, when the waterproof door falls into the limiting groove and reaches the designated position, the latch can lock the waterproof door through the locking hole on the waterproof door to prevent the waterproof door from being opened due to external force and to ensure the waterproof effect of the waterproof door.

[0024] Preferably, the longitudinal plate has a first through hole for receiving the pin and a second through hole for the unlocking rod to pass through.

[0025] In this design, in order to lock the waterproof door, the bolt needs to penetrate the waterproof door for a certain length. By setting a first through hole on the longitudinal plate, space is provided for the bolt to pass through, ensuring the stability of the lock. In addition, the second through hole provides space for the unlocking rod to unlock. The structure is simple and reliable.

[0026] Preferably, the base plate and the corresponding positions of the base frame are provided with multiple drainage holes.

[0027] In this design, after the waterproof door falls into the limiting groove, rainwater on its side opposite the electrical connector slides into the limiting groove. By adding drainage holes within the limiting groove, drainage is achieved, preventing rainwater accumulation and potential safety hazards. (Slide rail)

[0028] Preferably, the flat plate extends to both sides into the slide rail, and at least two of the plurality of drainage holes are respectively disposed at the corresponding positions of the slide rail.

[0029] In this design, rainwater flowing down the slide can be discharged through drainage holes corresponding to the slide, thus preventing rainwater accumulation and potential safety hazards.

[0030] Preferably, the longitudinal plate has a clearance area at a position corresponding to the support plate to avoid the waterproof door frame on the external electrical connection device.

[0031] In this design, a waterproof door and mounting section are provided on one side of the battery box. The external electrical connection device connected to the battery box is also equipped with a waterproof device. When making electrical connections, the fixing frames for sliding of their respective waterproof doors must be tightly joined to provide a sealed space for the electrical connectors and ensure the safety of the electrical connection. Based on this, the setting of the clearance area enables the waterproof devices of the battery box and the external electrical connection device to be tightly connected, ensuring a good seal and preventing rainwater from entering.

[0032] Preferably, the waterproof device further includes a hook-and-loop mechanism, which includes a buckle mounted on the waterproof part and a hook mounted on the battery box. The buckle is used to engage with the hook to open the sealed space of the waterproof part.

[0033] In this solution, when the waterproof section is opened and raised to the designated position, the buckle on the waterproof section is hooked onto the hook on the battery box to ensure that the waterproof section remains open so as to make electrical connection to realize the charging and discharging operation of the battery box.

[0034] A marine battery box includes a box body and a waterproof device as described above.

[0035] In this design, the ship's battery box is equipped with a waterproof device. The sealed space formed by the mounting part and the waterproof part protects the electrical connector, preventing rainwater from entering the connector and improving the battery box's waterproof and safety performance in outdoor environments. When the electrical connector needs to mate with the equipment connector to perform charging and discharging operations, the sliding waterproof part can meet the needs at any time. It can be opened to make electrical connection. The structure is simple and can significantly improve the battery box's waterproofness and safety.

[0036] The positive and progressive effects of this invention are as follows:

[0037] The sealed space formed by the mounting section and the waterproof section protects the electrical connector, preventing rainwater from entering and improving the battery box's waterproof and safety performance in outdoor environments. When the electrical connector needs to mate with the device's connector to perform charging and discharging operations, the sliding waterproof section can be opened to facilitate electrical connection. The structure is simple and significantly improves the battery box's waterproofness and safety. Attached Figure Description

[0038] Figure 1 This is a structural diagram of the ship battery box of the present invention.

[0039] Figure 2 This is a structural diagram of the waterproof device of the present invention.

[0040] Figure 3 This is a front structural view of the mounting part and locking mechanism of the waterproof device of the present invention.

[0041] Figure 4 This is a rear structural view of the mounting part and locking mechanism of the waterproof device of the present invention.

[0042] Figure 5 This is a top structural diagram of the mounting part of the present invention.

[0043] Figure 6 This is a bottom structural diagram of the mounting part of the present invention.

[0044] Figure 7 This is a structural diagram of the waterproof part and the hanging mechanism of the present invention.

[0045] Explanation of reference numerals in the attached figures:

[0046] Battery box 100

[0047] Electrical connector 101

[0048] Waterproof device 102

[0049] Installation Department 1

[0050] Fixed frame 11

[0051] Top frame 111

[0052] Bottom frame 112

[0053] Support plate 12

[0054] Slide 13

[0055] Diverter plate 14

[0056] Inclined baffle 15

[0057] Diversion channel 16

[0058] Base plate 17

[0059] Limiting groove 171

[0060] Flat panel 172

[0061] Drain hole 1721

[0062] Longitudinal plate 173

[0063] Guiding section 1731

[0064] First through hole 1732

[0065] Second through hole 1733

[0066] Avoidance Zone 1734

[0067] Waterproof part 2

[0068] Waterproof door 21

[0069] Fastening part 211

[0070] Waterproof flange 212

[0071] Locking hole 213

[0072] Limit plate 214

[0073] Locking mechanism 3

[0074] Pin 31

[0075] Unlock lever 32

[0076] 4 affiliated institutions

[0077] Buckle 41

[0078] Hook 42 Detailed Implementation

[0079] The present invention will be described more clearly and completely below by way of embodiments and in conjunction with the accompanying drawings, but the present invention is not limited to the scope of the embodiments described herein.

[0080] like Figures 1 to 7As shown, a waterproof device 102 is closable and mounted on a battery box 100 to protect an electrical connector 101. In this embodiment, the waterproof device 102 is located at the end face of the battery box 100, and a connector mating interface is provided on the side wall of the battery box 100. The electrical connector 101 is located inside the connector mating interface, and the waterproof device 102 is located around the connector mating interface. When the electrical connector 101 needs to be mated with the device connector, the waterproof device 102 moves and opens to expose the electrical connector 101. When the electrical connector 101 does not need to be mated with the device connector, the waterproof device 102 moves and closes to cover the electrical connector 101 and prevent rainwater from entering the electrical connector 101.

[0081] The waterproof device 102 includes a mounting part 1 and a waterproof part 2. The mounting part 1 is located near the electrical connector 101 of the battery box 100. The waterproof part 2 is slidably mounted on the mounting part 1, thereby forming a sealed space covering the electrical connector 101. The sealed space is opened by moving the waterproof part 2 to make an electrical connection. The sealed space formed by the mounting part 1 and the waterproof part 2 protects the electrical connector 101, preventing rainwater from entering the electrical connector 101 and improving the waterproof performance and safety of the battery box 100 in outdoor environments. When the electrical connector 101 needs to mate with the device connector to perform charging and discharging operations, the slidably mounted waterproof part 2 can meet the needs at any time, opening to make an electrical connection. The structure is simple and can significantly improve the waterproofness and safety of the battery box 100. In other embodiments, the waterproof part 2 can also be moved horizontally along the mounting part 1 to control the opening and closing of the sealed space.

[0082] In this embodiment, the mounting part 1 includes a fixed frame 11 fixedly disposed on the battery box 100 at a predetermined distance from the periphery of the electrical connector 101, and support plates 12 formed on both sides of the front end surface of the fixed frame 11 along the moving direction of the waterproof part 2. A slide 13 for the waterproof part 2 to move is formed between the fixed frame 11 and the support plates 12. The waterproof part 2 includes a waterproof door 21 movably disposed along the slide 13. Both sides of the waterproof door 21 have fastening portions 211 extending from the outside of the support plate 12 into the slide 13.

[0083] By forming a slide rail 13 on the fixing frame 11 around the electrical connector 101 for the waterproof door 21 to slide, and by having a fastening part 211 extending into the slide rail 13, the waterproof door 21 is ensured not to come loose from the slide rail 13, ensuring the stability of the connection between the waterproof door 21 and the mounting part 1, thus providing good protection for the electrical connector 101 on the battery box 100, preventing rainwater from entering the electrical connector 101, and improving the safety of the battery box 100 when operating outdoors.

[0084] In this embodiment, the fixing frame 11 adopts a ring structure and is formed by connecting several plates or integrally molded. The fixing frame 11 is bolted to the battery box 100. The support plate 12 is vertically arranged, and the corresponding slide 13 extends vertically. The waterproof door 21 opens or closes the sealed space by moving up and down. In other embodiments, as an alternative, the support plate 12 is horizontally arranged, that is, arranged above and below the connector interface. The corresponding waterproof door 21 can move horizontally along the support plate 12 to control the opening and closing of the sealed space.

[0085] In this embodiment, the edge of the waterproof door 21 is bent twice to the same side to form a fastening part 211. The fastening part 211 can block rainwater from flowing to the electrical connector 101, ensuring the safe operation of the charging process.

[0086] In this embodiment, the installation part 1 also includes a diversion plate 14 and an inclined baffle 15 disposed on the top of the support plate 12 and fixed to the end face of the top frame 111 of the fixed frame 11. A diversion groove 16 is formed between the diversion plate 14 and the top frame 111 of the fixed frame 11. The diversion groove 16 is used to guide water towards the support plate 12. The lower end of the inclined baffle 15 is connected to the top frame 111, and the upper end of the inclined baffle 15 is connected to the upper end of the diversion plate 14. The inclined baffle 15 is used to limit the waterproof gate 21 from the upper side.

[0087] Rainwater falling from the top collects in the diversion channel 16 formed between the diversion plate 14 and the fixed frame 11, and flows along the diversion channel 16 into the slide 13 between the fixed frame 11 and the support plate 12, and can be discharged along the slide 13; in addition, when the waterproof door 21 moves along the slide 13 to the sealed space of the closed electrical connector 101, the limiting plate 214 formed on the top surface of the waterproof door 21 abuts against the inclined surface of the inclined baffle 15, realizing the limiting function of the waterproof door 21 from the top, preventing the waterproof door 21 from shaking relative to the fixed frame 11, affecting the waterproof performance or generating noise, etc., and improving the stability of the waterproof door 21.

[0088] In this embodiment, waterproof flanges 212 extend upwards from both sides of the top surface of the waterproof door 21 and from the outer side opposite to the battery box 100 to limit and guide the water flow. The waterproof flanges 212 on three sides of the top surface of the waterproof door 21 allow rainwater to flow down the side closest to the battery box 100 without the waterproof flanges 212, then flow down the downward-extending limiting plate 214 into the diversion groove 16 of the mounting part 1, and finally drain through the side rails 13, preventing rainwater from accumulating on the top surface of the waterproof door 21 and improving its waterproof performance.

[0089] In this embodiment, the waterproof flange 212 on the outer side opposite to the battery box 100 is configured to be higher than the waterproof flanges 212 on both sides to form a vertical plate structure. The waterproof door 21 on the external electrical connection device is attached to the vertical plate structure so that it can be opened and closed simultaneously. The external electrical connection device also has a waterproof door 21, which is attached to the vertical plate structure formed by the waterproof flange 212 opposite to the battery box 100. When the waterproof door 21 on the battery box 100 is opened or closed, it can drive the waterproof door 21 of the external electrical connection device to open and close together, so that the two waterproof doors 21 move synchronously, improving the opening and closing efficiency while ensuring waterproof sealing.

[0090] In this embodiment, the mounting part 1 further includes a base plate 17 fixed below the electrical connector 101 and connected to the bottom frame 112 of the fixing frame 11. The base plate 17 has a limiting groove 171 formed upward for limiting the waterproof door 21. The limiting groove 171 formed by the base plate 17 realizes the function of limiting the waterproof door 21 from the bottom, and combined with the upper limiting function, it further prevents the waterproof door 21 from shaking relative to the fixing frame 11, ensuring the stability of the waterproof door 21 on the fixing frame 11 and ensuring waterproof performance. The base plate 17 also provides a platform to support the waterproof door 21, preventing the waterproof door 21 from slipping to the ground.

[0091] In this embodiment, the base plate 17 includes a flat plate 172 attached to the lower surface of the base frame 112 and a longitudinal plate extending upward from the end face of the flat plate 172. A limiting groove 171 is formed between the longitudinal plate and the support plate 12. The end of the longitudinal plate extends outward to form a guide portion 1731, which is used to guide the waterproof door 21. The opening of the limiting groove 171 gradually increases from bottom to top, and the opening of the guide portion 1731 is further increased. When the waterproof door 21 is closed, the falling waterproof door 21 first contacts the guide portion 1731 and gradually moves into the limiting groove 171 between the longitudinal plate and the support plate 12 under the guidance of the guide portion 1731, thereby realizing the lower limiting function of the waterproof door 21. In this embodiment, the flat plate 172 and the longitudinal plate are integrally formed; in other embodiments, the two can be welded together.

[0092] In this embodiment, the waterproof device 102 further includes a locking mechanism 3 disposed on the upper surface of the bottom frame 112. The locking mechanism 3 includes a retractable pin 31, which is used to cooperate with the locking hole 213 on the waterproof door 21 to lock or unlock the waterproof door 21. When the waterproof door 21 falls into the limiting groove 171 and reaches the designated position, the pin 31 can lock the waterproof door 21 through the locking hole 213 on the waterproof door 21, preventing the waterproof door 21 from being opened due to external force and ensuring the waterproof effect of the waterproof door 21.

[0093] In this embodiment, the longitudinal plate has a first through hole 1732 for accommodating the pin 31 and a second through hole 1733 for the unlocking rod 32 to pass through. In order to lock the waterproof door 21, the pin 31 needs to penetrate the waterproof door 21 for a certain length. By providing the first through hole 1732 on the longitudinal plate 173, a clearance space is provided for the through pin 31, ensuring the stability of the lock; in addition, the second through hole 1733 provides the unlocking position space for the unlocking rod 32, making the structure simple and reliable.

[0094] The locking and unlocking process of the waterproof door 21 in this embodiment is as follows: In the locked state, the pin 31 of the locking mechanism 3 passes through the first through hole 1732 of the longitudinal plate and the corresponding locking hole 213 on the waterproof door 21, locking the waterproof door 21 to the mounting part 1; When unlocking, the unlocking rod 32 applies a load away from the direction of the unlocking block of the locking mechanism 3, and the movement of the unlocking rod 32 drives the pin 31 to move. When the pin 31 moves to disengage from the locking hole 213 of the waterproof door 21, the door is unlocked and the waterproof door 21 can be moved and opened.

[0095] In this embodiment, multiple drainage holes 1721 are provided on the corresponding positions of the flat plate 172 of the base plate 17 and the bottom frame 112. After the waterproof door 21 falls into the limiting groove 171, the rainwater on its side opposite to the electrical connector 101 slides into the limiting groove 171. By adding drainage holes 1721 in the limiting groove 171, the drainage effect is achieved, avoiding the safety hazards caused by rainwater accumulation.

[0096] In this embodiment, the flat plate 172 extends to both sides into the slide rail 13, and at least two of the plurality of drainage holes 1721 are respectively provided at corresponding positions in the slide rail 13. Rainwater flowing down from the slide rail 13 can be discharged through the drainage holes 1721 provided corresponding to the slide rail 13, avoiding the safety hazards caused by rainwater accumulation.

[0097] In this embodiment, the longitudinal plate has a clearance area 1734 at a position corresponding to the support plate 12 to avoid the waterproof door 21 frame on the external electrical connection device. When the electrical connector 101 mates with the device end connector, the outer surface of the mounting part 1 is required to be sealed to the device end. In specific applications, a sealing ring is provided on the outer surface of the mounting part 1 or the device end, and the sealing ring fits against the outer surface of the mounting part 1. In this embodiment, the battery box 100 has a waterproof door 21 and a mounting part 1 on one side. The external electrical connection device connected to the battery box 100 also has a waterproof device 102. When making electrical connections, the fixing frames 11 used for sliding the respective waterproof doors 21 need to be tightly mated to provide a sealed space for the mating of the electrical connector 101 and ensure the safety of the electrical connection. Based on this, the clearance area 1734 allows the waterproof device 102 of the battery box 100 and the waterproof device 102 of the external electrical connection device to cooperate and connect, ensuring a good seal and preventing rainwater from entering.

[0098] In this embodiment, the waterproof device 102 further includes a hooking mechanism 4. The hooking mechanism 4 includes a buckle 41 installed on the waterproof part 2 and a hook 42 installed on the battery box 100. The buckle 41 is used to cooperate with the hook 42 to keep the waterproof part 2 in an open and sealed state. When the waterproof part 2 is opened and raised to a designated position, the buckle 41 on the waterproof part 2 is hooked onto the hook 42 on the battery box 100 to ensure that the waterproof part 2 remains in the open state for electrical connection to realize the charging and discharging operation of the battery box 100.

[0099] A marine battery box 100 includes a box body and a waterproof device 102 as described above. In this embodiment, the box body of the marine battery box 100 is configured as a container. The marine battery box 100 is equipped with a waterproof device 102. The sealed space formed by the mounting part 1 and the waterproof part 2 maintains the protection of the electrical connector 101, preventing rainwater from entering the electrical connector 101 and improving the waterproof performance and safety performance of the battery box 100 in outdoor environments. When the electrical connector 101 needs to be connected to the device connector to perform charging and discharging operations, the sliding waterproof part 2 can meet the needs at any time. It can be opened to make electrical connection. The structure is simple and can significantly improve the waterproofness and safety of the battery box 100.

[0100] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A waterproof device, characterized in that, The waterproof device, which is closable and can be installed on the battery box to protect the electrical connector, includes: The mounting section is located near the electrical connector of the battery box; A waterproof part is slidably disposed on the mounting part, thereby forming a sealed space covering the electrical connector. The sealed space is opened by moving the waterproof part to make an electrical connection. The mounting part includes a fixed frame fixedly disposed on the battery box at a predetermined distance from the periphery of the electrical connector, and support plates formed on both sides of the front end face of the fixed frame along the moving direction of the waterproof part. The fixed frame forms a slide for the waterproof part to move at the support plates. The waterproof part includes a waterproof door movably disposed along the slide. The waterproof door has a fastening part on both sides extending from the outside of the support plate into the slide. The installation part further includes a diversion plate and an inclined baffle plate disposed on the top of the support plate and fixed to the end face of the top frame of the fixed frame. A diversion groove is formed between the diversion plate and the top frame of the fixed frame. The diversion groove is used to guide water towards the support plate. The lower end of the inclined baffle plate is connected to the top frame, and the upper end of the inclined baffle plate is connected to the upper end of the diversion plate. The inclined baffle plate is used to limit the waterproof door from the upper side. Waterproof protrusions extend upward from both sides of the top surface of the waterproof door and from the outer side opposite to the battery box to limit and guide the water flow.

2. The waterproof device as described in claim 1, characterized in that, The waterproof protrusion on the outer side opposite to the battery box is configured to be higher than the waterproof protrusions on both sides to form a vertical plate structure. The waterproof door on the external electrical connection device is hung through the vertical plate structure so that it can be opened and closed at the same time.

3. The waterproof device as described in claim 1, characterized in that, The mounting part also includes a base plate fixed below the electrical connector and connected to the bottom frame of the fixing frame, the base plate having an upwardly formed limiting groove for limiting the waterproof door.

4. The waterproof device as described in claim 3, characterized in that, The base plate includes a flat plate attached to the lower surface of the base frame and a longitudinal plate extending upward from the end face of the flat plate. The limiting groove is formed between the longitudinal plate and the support plate. The end of the longitudinal plate extends outward to form a guide portion, which is used to guide the waterproof door.

5. The waterproof device as described in claim 4, characterized in that, The waterproofing device also includes a locking mechanism disposed on the upper surface of the bottom frame. The locking mechanism includes a retractable pin for engaging with a locking hole on the waterproof door to lock or unlock the waterproof door.

6. The waterproof device as described in claim 5, characterized in that, The longitudinal plate has a first through hole for receiving the pin and a second through hole for the unlocking rod to pass through.

7. The waterproof device as described in claim 4, characterized in that, The base plate and the corresponding positions of the base frame are provided with multiple drainage holes.

8. The waterproof device as described in claim 7, characterized in that, The flat plate extends to both sides into the slide rail, and at least two of the plurality of drainage holes are respectively provided at the corresponding positions of the slide rail.

9. The waterproof device as described in claim 4, characterized in that, The longitudinal plate has a clearance area at a position corresponding to the support plate to avoid the waterproof door frame on the external electrical connection device.

10. The waterproof device as described in claim 1, characterized in that, The waterproof device also includes a hook-and-loop mechanism, which includes a buckle installed on the waterproof part and a hook installed on the battery box. The buckle is used to cooperate with the hook to open the sealed space of the waterproof part.

11. A marine battery box, characterized in that, It includes a housing and a waterproofing device as described in any one of claims 1-10.

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