A waterproof structure and potting method for a water-assisted battery

Abstract

This invention discloses a waterproof structure and encapsulation method for a water-assisted battery, relating to the field of battery manufacturing. The method involves connecting a rear end cap to an aluminum bucket and tightening the rear encapsulation screws. The airtightness of the bucket is tested. Once the test results are satisfactory, the aluminum bucket is upright, and sealant is injected from the top of the bucket at the connection between the bucket and the rear end cap. A battery module is then installed inside the aluminum bucket, and the front end cap is connected to it. The bucket is left to stand for the sealant to cure. After the sealant at the rear end cap has cured, the sealing performance of the front end cap is tested. Once the test results are satisfactory, the rear encapsulation screws are removed, allowing the aluminum bucket to be open to the outside. Encapsulation is then injected through the front encapsulation hole into an encapsulation tube. After encapsulation, the front encapsulation screws are tightened, the aluminum bucket is inverted, and the bucket is left to stand for the sealant to cure. After the sealant has cured, the rear encapsulation screws are tightened. Finally, a decorative cover is assembled. This application only performs localized encapsulation at structural joints, reducing the overall weight of the battery and effectively preventing glue overflow.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of battery production, in particular to a waterproof structure of a water-assisted battery and a glue pouring method. BACKGROUND

[0002] In recent years, water sports and assistance devices such as electric surfboards, underwater diving propellers and underwater robots have attracted widespread attention and development. As the core power source of the battery pack, its working environment is much worse than that of land equipment, and it needs to be completely immersed in water for a long time or intermittently, and may be subjected to water flow impact, wave beating and certain water pressure. Therefore, the requirements for waterproof and sealing performance have reached the highest level, and any small leakage may cause battery short circuit, failure, and even safety accidents.

[0003] A glue pouring type double battery is disclosed in Chinese Patent Publication No. CN222883700U, which is used to solve the defects of poor waterproof performance of existing electric vehicle batteries. The glue pouring type double battery includes a battery compartment, a compartment cover, a first battery assembly, a second battery assembly and a partition plate. The battery compartment is provided as a rectangular box structure with one end open. The compartment cover is assembled on the battery compartment near the open end. The battery compartment and the compartment cover form a containing cavity. The containing cavity is filled with waterproof glue. The first battery assembly is arranged in the battery compartment. The first battery assembly includes a plurality of cylindrical batteries. The cylindrical batteries are used to provide power support for the glue pouring type double battery. The second battery assembly is arranged in the battery compartment and is spaced apart from the first battery assembly. The second battery assembly includes a plurality of cylindrical batteries. The partition plate is arranged in the battery compartment and is arranged between the first battery assembly and the second battery assembly.

[0004] The above-mentioned patent realizes waterproofing of the battery assembly by pouring waterproof glue into the containing cavity. However, the method of pouring waterproof glue in a large area in the containing cavity increases the weight of the battery, and the glue is prone to overflow when the battery compartment and the compartment cover are enclosed. SUMMARY

[0005] The application provides a waterproof structure of a water-assisted battery and a glue pouring method to solve the problems raised in the background art.

[0006] To achieve the above purpose, the application is implemented by the following technical solutions:

[0007] The utility model provides an overwater power-assisted battery waterproof structure, including aluminium barrel, the front end cover, rear end cover are connected with aluminium barrel two ends respectively, be provided with pouring hole on the front end cover, the pouring hole of front end cover is movably connected with the front end pouring screw, be provided with pouring hole on the rear end cover, the pouring hole of rear end cover is movably connected with the rear end pouring screw, the front end cover, rear end cover and aluminium barrel junction forms pouring site, the pouring site pours with sealant, the sealed space of aluminium barrel and front end cover, rear end cover is provided with battery module in.

[0008] Preferably, a rear sealing ring is arranged between the rear end cover and the aluminium barrel.

[0009] A front sealing ring is arranged between the front end cover and the aluminium barrel.

[0010] Preferably, a sealing ring is arranged at the connection between the rear end pouring screw, the front end pouring screw and the pouring hole.

[0011] Preferably, the aluminium barrel, the front end cover and the rear end cover are connected by end cover fixing screws.

[0012] Preferably, the sealant poured in the pouring site covers the part of the end cover fixing screw inside the aluminium barrel.

[0013] Preferably, an output port is arranged on the battery module, the output port is connected to the front end cover, and a sealing ring is arranged between the output port and the front end cover.

[0014] Preferably, a front end decorative cover is arranged on the front end cover, and the front end decorative cover and the front end cover are connected by a front end decorative cover fixing screw.

[0015] A rear end decorative cover is arranged on the rear end cover, and the rear end decorative cover and the rear end cover are connected by a rear end decorative cover fixing screw.

[0016] Preferably, a magnet is arranged on the front end cover, and the magnet is located on the side of the output port.

[0017] An overwater power-assisted battery waterproof pouring method is used to manufacture the overwater power-assisted battery waterproof structure.

[0018] Preferably, the method comprises the following steps:

[0019] S1: connect the rear end cover to the aluminium barrel, tighten the rear end pouring screw, and detect the air tightness; when the detection result meets the standard, straighten the aluminium barrel, and pour sealant from the top of the aluminium barrel to the connection between the aluminium barrel and the rear end cover;

[0020] S2: install the battery module in the aluminium barrel, connect the front end cover to the aluminium barrel, and wait for the sealant to solidify.

[0021] S3: After the sealant at the rear end cover is cured, the sealing property of the front end cover is detected, when the detection result reaches the standard, the rear end pouring screw is disassembled, the aluminum barrel is communicated with the outside at both ends, the pouring hole at the front end is guided into the glue injection pipe for glue injection, after the glue injection is completed, the front end pouring screw is locked, the glue is injected at the front end pouring screw, the aluminum barrel is inverted, and the sealant is cured, the rear end pouring screw is locked after the sealant is cured, and the glue is injected at the rear end pouring screw;

[0022] S4: Assembling the rear end decoration cover and the front end decoration cover.

[0023] Compared with the prior art, the present application at least has the following beneficial effects:

[0024] The present application pours the sealant into the pouring position formed between the aluminum barrel and the front end cover through the pouring hole arranged on the front end cover, and pours the sealant into the pouring position formed between the aluminum barrel and the rear end cover through the pouring hole arranged on the rear end cover, so that the sealant can completely fill and seal the assembly gap between the front end cover, the rear end cover and the aluminum barrel after curing, compared with the traditional full pouring, the present application only performs local glue injection at the structural joint, greatly reduces the amount of sealant used, effectively reduces the overall weight and material cost of the battery, increases the endurance of the water equipment, and can effectively avoid the problem of glue overflow. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the schematic diagram of the split effect of the main structure of the present application;

[0026] Figure 2 It is the schematic diagram of the structure formed after the aluminum barrel and the rear end cover are connected in the present application;

[0027] Figure 3 It is the schematic diagram of the sealant pouring position in the present application;

[0028] Figure 4 It is the schematic diagram of the rear end pouring screw connection position in the present application;

[0029] Figure 5 It is the schematic diagram of the battery module assembly structure in the present application;

[0030] Figure 6 It is the schematic diagram of the top end glue injection state in the present application.

[0031] In the figure: 1, aluminum barrel; 2, battery module; 3, front end cover; 4, rear end cover; 5, front sealing ring; 6, rear sealing ring; 7, rear end decoration cover; 8, front end decoration cover; 9, end cover fixing screw; 10, light guide column; 11, rear end pouring screw; 12, front end pouring screw; 13, rear end decoration cover fixing screw; 14, front end decoration cover fixing screw; 15, output port; 16, magnet; 17, pouring position. DETAILED DESCRIPTION

[0032] In the present application, the description such as "first", "second" and the like is only for the purpose of description, and is not intended to particularly indicate the order or sequence, nor to limit the present application, which is merely to distinguish the protective assembly or operation described by the same technical terms, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features of various embodiments can be combined with each other, but it must be based on the realization of the person skilled in the art, and when the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist, nor within the protection scope required by the present application.

[0033] Embodiment 1:

[0034] Please refer to Figures 1-6 A waterproof structure of a water-assisted battery includes an aluminum barrel 1, the aluminum barrel 1 is connected with a front end cover 3 and a rear end cover 4 at both ends respectively, a pouring hole is arranged on the front end cover 3, a front end pouring screw 12 is movably connected in the pouring hole on the front end cover 3, a pouring hole is arranged on the rear end cover 4, a rear end pouring screw 11 is movably connected in the pouring hole on the rear end cover 4, the pouring position 17 is formed at the connection between the front end cover 3, the rear end cover 4 and the aluminum barrel 1, the pouring position 17 is filled with sealing glue, and the battery module 2 is arranged in the sealing space composed of the aluminum barrel 1, the front end cover 3 and the rear end cover 4.

[0035] A rear sealing ring 6 is arranged between the rear end cover 4 and the aluminum barrel 1.

[0036] A front sealing ring 5 is arranged between the front end cover 3 and the aluminum barrel 1.

[0037] A sealing ring is arranged at the connection between the rear end pouring screw 11, the front end pouring screw 12 and the pouring hole.

[0038] The aluminum barrel 1, the front end cover 3 and the rear end cover 4 are connected through the end cover fixing screw 9, and the end cover fixing screw 9 penetrates the side wall of the aluminum barrel 1 and is locked in the front end cover 3 and the rear end cover 4.

[0039] The sealing glue filled in the pouring position 17 covers the part of the end cover fixing screw 9 located inside the aluminum barrel 1.

[0040] An output port 15 is arranged on the battery module 2, the output port 15 is connected to the front end cover 3, and a sealing ring is arranged between the output port 15 and the front end cover 3.

[0041] A front end decorative cover 8 is arranged on the front end cover 3, and the front end decorative cover 8 and the front end cover 3 are connected through the front end decorative cover fixing screw 14.

[0042] The rear end cover 4 is provided with a rear end decorative cover 7, which is connected with the rear end cover 4 through a rear end decorative cover fixing screw 13.

[0043] The front end cover 3 is provided with a magnet 16 located on the side of the output port 15.

[0044] The front end cover 3 is provided with a transparent light guide column 10 for displaying the working state of the battery module 2, and the front end decorative cover 8 is correspondingly provided with a display hole.

[0045] The working principle and advantages of the above scheme are as follows:

[0046] The present application fills and seals the assembly gap between the front end cover 3, the rear end cover 4 and the aluminum barrel 1 by pouring sealant from the pouring hole provided on the front end cover 3 into the pouring position 17 formed between the aluminum barrel 1 and the front end cover 3, and pouring sealant from the pouring hole provided on the rear end cover 4 into the pouring position 17 formed between the aluminum barrel 1 and the rear end cover 4. After the sealant solidifies, it can completely fill and seal the assembly gap between the front end cover 3, the rear end cover 4 and the aluminum barrel 1. Compared with the traditional full pouring, the present application only locally pours glue at the structural joint, greatly reducing the amount of sealant used, effectively reducing the overall weight and material cost of the battery, increasing the endurance of the water equipment, and effectively avoiding the problem of glue overflowing.

[0047] The front end cover 3, the rear end cover 4 and the aluminum barrel 1 are connected through the end cover fixing screw 9 at the assembly position, ensuring the connection reliability of the front end cover 3, the rear end cover 4 and the aluminum barrel 1, and the sealant poured at the pouring position 17 covers the part of the end cover fixing screw 9 located inside the aluminum barrel 1, further ensuring the sealing effect inside the aluminum barrel 1 on the basis of ensuring the connection reliability.

[0048] The front and rear sealing rings 5 and 6 further ensure the sealing effect inside the aluminum barrel 1.

[0049] The magnet 16 serves as a Hall switch sensing area, which accurately detects the physical connection state of the battery through a non-contact method of the Hall switch, thereby greatly ensuring the operation safety and system reliability of the battery.

[0050] Embodiment 2:

[0051] A waterproof glue pouring method for a water-assisted battery is used to manufacture the waterproof structure of the water-assisted battery.

[0052] The method comprises the following steps:

[0053] S1: connect the rear end cover 4 with the aluminum barrel 1, lock the rear end pouring screw 11, and detect the air tightness, when the detection result reaches the standard, the aluminum barrel 1 is straightened, the sealant is poured from the top of the aluminum barrel 1 to the connection between the aluminum barrel 1 and the rear end cover 4;

[0054] S2: install the battery module 2 in the aluminum barrel 1, connect the front end cover 3 with the aluminum barrel 1, and wait for the sealant to solidify;

[0055] S3: after the sealant at the rear end cover 4 solidifies, the sealing property of the front end cover 3 is detected, when the detection result reaches the standard, the rear end pouring screw 11 is disassembled, the aluminum barrel 1 is communicated with the outside, the glue injection pipe is inserted into the pouring hole at the front end for glue injection, after the glue injection is completed, the front end pouring screw 12 is locked, the sealant is injected at the front end pouring screw 12, the aluminum barrel 1 is inverted, and the sealant is solidified, after the sealant solidifies, the rear end pouring screw 11 is locked, and the sealant is injected at the rear end pouring screw 11;

[0056] S4: assemble the rear end decorative cover 7 and the front end decorative cover 8.

[0057] The working principle and beneficial effects of the above scheme are as follows:

[0058] The glue injection method of the present application first separately injects the sealant at the connection between the rear end cover 4 and the aluminum barrel 1 and solidifies, during which the rear end pouring screw 11 is locked and the air tightness of the end is detected to ensure the sealing quality of the first step, then the battery module 2 and the front end cover 3 are immediately installed to prevent the sealant from affecting the installation of the battery module after solidification; the sealant at the rear end cover 4 is solidified, after the sealant at the rear end cover 4 solidifies, the rear end pouring screw 11 is disassembled, the inside of the aluminum barrel 1 is in a communicated state, which is convenient for discharging the internal air to make the glue injection at the front end more easy, then the glue injection pipe is inserted into the pouring hole at the front end cover 3 for glue injection, after the glue injection is completed, the front end pouring screw 12 is locked, the aluminum barrel 1 is inverted, the front end cover 3 is at the bottom, the glue is naturally flowed to and filled in the gap between the front end cover 3 and the aluminum barrel 1 by using the gravity, the rear end pouring screw 11 is locked after the sealant solidifies, the sealing effect of the inside of the aluminum barrel 1 is ensured, the glue is injected into the aluminum barrel 1 from both ends respectively, and the inverted and upright placement state is used, which can make the sealant stay between the two ends of the aluminum barrel 1 and the front end cover 3 and the rear end cover 4 to form a good sealing effect, in the case of reducing the use of sealant, the sealing effect of the inside of the aluminum barrel 1 is ensured, the overall weight and material cost of the battery are reduced, the endurance of the water equipment is increased, and the problem of glue overflow can be effectively avoided.

[0059] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A waterproof pouring method for a water-assisted battery, characterized in that, a waterproof structure for a water-assisted battery is manufactured; the waterproof structure for the water-assisted battery comprises an aluminum barrel (1), the aluminum barrel (1) is connected with a front end cover (3) and a rear end cover (4) at both ends respectively, the front end cover (3) is provided with a pouring hole, a front end pouring screw (12) is movably connected in the pouring hole of the front end cover (3), the rear end cover (4) is provided with a pouring hole, a rear end pouring screw (11) is movably connected in the pouring hole of the rear end cover (4), the front end cover (3) and the rear end cover (4) are connected with the aluminum barrel (1) to form a pouring position (17), sealing glue is poured in the pouring position (17), and a battery module (2) is arranged in a sealed space formed by the aluminum barrel (1), the front end cover (3) and the rear end cover (4). comprises the following steps: S1: connecting the rear end cover (4) with the aluminum barrel (1), locking the rear end pouring screw (11), detecting the air tightness, when the detection result meets the standard, straightening the aluminum barrel (1), and pouring sealing glue at the connection between the aluminum barrel (1) and the rear end cover (4) from the top of the aluminum barrel (1); S2: installing the battery module (2) in the aluminum barrel (1), connecting the front end cover (3) with the aluminum barrel (1), and waiting for the sealing glue to solidify; S3: after the sealing glue at the rear end cover (4) solidifies, detecting the sealing property of the front end cover (3), when the detection result meets the standard, disassembling the rear end pouring screw (11), connecting the aluminum barrel (1) with the outside, introducing a glue injection pipe from the pouring hole at the front end to inject glue, locking the front end pouring screw (12) after the glue injection is completed, injecting glue at the front end pouring screw (12), turning the aluminum barrel (1) upside down, waiting for the sealing glue to solidify, locking the rear end pouring screw (11) after the sealing glue solidifies, and injecting glue at the rear end pouring screw (11); S4: assembling a rear end decorative cover (7) and a front end decorative cover (8).

2. The waterproof pouring method for a water-assisted battery according to claim 1, characterized in that, a rear sealing ring (6) is arranged between the rear end cover (4) and the aluminum barrel (1); a front sealing ring (5) is arranged between the front end cover (3) and the aluminum barrel (1).

3. The waterproof pouring method for a water-assisted battery according to claim 1, characterized in that, a sealing ring is arranged at the connection between the rear end pouring screw (11) and the pouring hole.

4. The waterproof pouring method for a water-assisted battery according to claim 1, characterized in that, the aluminum barrel (1) is connected with the front end cover (3) and the rear end cover (4) through an end cover fixing screw (9).

5. The waterproof pouring method for a water-assisted battery according to claim 1, characterized in that, the sealing glue poured in the pouring position (17) covers the part of the end cover fixing screw (9) located in the aluminum barrel (1).

6. The waterproof pouring method for a water-assisted battery according to claim 1, characterized in that, The battery module (2) is provided with an output port (15), the output port (15) is connected to the front end cover (3), and a sealing ring is arranged between the output port (15) and the front end cover (3).

7. The waterproof glue filling method for the water-assisted battery according to claim 1, characterized in that, The front end cover (3) is provided with a front end decorative cover (8), and the front end decorative cover (8) is connected to the front end cover (3) through a front end decorative cover fixing screw (14). The rear end cover (4) is provided with a rear end decorative cover (7), and the rear end decorative cover (7) is connected to the rear end cover (4) through a rear end decorative cover fixing screw (13).

8. The waterproof glue filling method for the water-assisted battery according to claim 6, characterized in that, The front end cover (3) is provided with a magnet (16), and the magnet (16) is located on one side of the output port (15).

Images