CN215578975U

CN215578975U - Waterproof fuse cabin structure for battery

Info

Publication number: CN215578975U
Application number: CN202121957052.XU
Authority: CN
Inventors: 孙宗闽; 吴国庆
Original assignee: Fujian Yunzhong Power Technology Co ltd
Current assignee: Fujian Yunzhong Power Technology Co ltd
Priority date: 2021-08-19
Filing date: 2021-08-19
Publication date: 2022-01-18
Anticipated expiration: 2031-08-19

Abstract

The utility model relates to a waterproof fuse cabin structure for a battery, which comprises: the fuse cabin is arranged at the bottom of the bottom shell, a fuse is connected in the fuse cabin, a fuse cabin cover is connected on the fuse cabin, and the fuse cover is arranged in the fuse cabin through the fuse cabin cover; the electrode post assembly is connected in the bottom shell, the upper portion of the electrode post assembly is located on the inner side of the bottom shell, and the lower portion of the electrode post assembly is connected with the fuse. The utility model has simple and reliable structure and good waterproof and sealing performance; the assembly process is simple and reliable, and the waterproof performance can be ensured while the fuse is convenient to be independently disassembled and assembled; the universality is strong, and the large-current load work can be realized; compact structure, small, no unnecessary pencil circulation is walked the line.

Description

Waterproof fuse cabin structure for battery

Technical Field

The utility model relates to the field of storage battery energy, in particular to a waterproof fuse cabin structure for a battery.

Background

Along with the development of new energy equipment such as electric motor cars, logistics robots and electric ships, the use of lithium batteries is more and more extensive, the output current is continuously increased, the waterproof grade requirement is higher and higher, and the fuse plays an important role in the batteries as the final short circuit overcurrent protection device of the lithium batteries.

The fuse of present scheme generally all welds on BMS protection shield or is built-in inside the battery, also guarantees the inside waterproof of battery when guaranteeing battery safe work, and it has following several shortcomings:

1. the fuse just can damage when the serious short circuit appears in the external load under most circumstances, and the inside BMS protection shield of battery this moment, most can not damage, and the battery is disassembled for the fuse device is changed in the maintenance alone, and the operation is complicated, still destroys the inside waterproof of battery easily.

2. The external fuse, although solving the replacement problem, needs a relatively complicated wiring harness to be connected from the inside to the outside of the battery, and is difficult to achieve good waterproof sealing through the wiring harness end of the battery shell and the fuse cabin.

3. The external fuse can pass most current loads, is below 50A, and is not suitable for being used under the condition of larger load.

SUMMERY OF THE UTILITY MODEL

First, technical problem to be solved

In order to solve the above problems in the prior art, the utility model provides a waterproof fuse chamber structure for a battery, which has a simple and reliable structure, good waterproofness and a larger load.

Second, technical scheme

In order to achieve the purpose, the utility model adopts the main technical scheme that:

a waterproof fuse compartment structure for a battery, comprising: the fuse cabin is arranged at the bottom of the bottom shell, a fuse is connected in the fuse cabin, a fuse cabin cover is connected on the fuse cabin, and the fuse cover is arranged in the fuse cabin through the fuse cabin cover; the electrode post assembly is connected in the bottom shell, the upper portion of the electrode post assembly is located on the inner side of the bottom shell, and the lower portion of the electrode post assembly is connected with the fuse.

Further, the electrode column assembly includes an electrode column connected to the mounting hole of the bottom case; the electrode column comprises a fixed block connected in the mounting hole, the upper end and the lower end of the fixed block extend to form an upper limiting block and a lower limiting block respectively, and the upper limiting block and the lower limiting block extend outwards to form an upper screw rod and a lower screw rod respectively.

Furthermore, the fixing block is provided with a first limiting surface which is limited with the mounting hole.

Furthermore, second limiting surfaces which limit the bottom shell are formed on the upper limiting block and the lower limiting block respectively.

Furthermore, go up the spacing piece and be formed with respectively on the spacing piece down and beat the platform of gluing with drain pan matched with, beat and glue the platform and cooperate with the drain pan and form gluey groove.

Further, the lower screw of the electrode column assembly is connected with the fuse through the copper flat gasket, the spring gasket and the copper nut in sequence from inside to outside.

Further, the upper plane of the glue groove is lower than the upper plane of the glue beating table.

Furthermore, a sealing ring is arranged at the joint of the fuse cabin cover and the fuse cabin.

Third, beneficial effect

The utility model has the beneficial effects that: the structure is simple and reliable, and the waterproof and sealing performance is good; the assembly process is simple and reliable, and the waterproof performance can be ensured while the fuse is convenient to be independently disassembled and assembled; the universality is strong, and the large-current load work can be realized; compact structure, small, no unnecessary pencil circulation is walked the line.

Drawings

FIG. 1 is a schematic structural diagram of one embodiment of the present invention;

FIG. 2 is a bottom view of the structure of one embodiment of the present invention;

FIG. 3 is a structural cross-sectional view of one embodiment of the present invention;

fig. 4 is a schematic view of an electrode column structure according to an embodiment of the present invention.

Detailed Description

For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings.

A waterproof fuse compartment structure for a battery according to an embodiment of the present invention, as shown in fig. 1 to 4, includes: the fuse box comprises a fuse cabin 2 arranged at the bottom of a bottom shell 1, a fuse 3 is connected in the fuse cabin 2, a fuse cabin cover 4 is connected on the fuse cabin 2, and the fuse 3 is covered in the fuse cabin 2 by the fuse cabin cover 4.

Further, a sealing ring 5 is arranged at the joint of the fuse cabin cover 4 and the fuse cabin 2.

Specifically, an electrode column assembly is connected in the bottom shell 1, the upper portion of the electrode column assembly is located on the inner side of the bottom shell 1, the lower portion of the electrode column assembly is connected with the fuse 3, and the electrode column assembly comprises an electrode column 9 connected to a mounting hole 11 of the bottom shell 1.

Specifically, the electrode column 9 includes a fixing block 91 connected to the mounting hole 11, the upper and lower ends of the fixing block 91 extend to form an upper limiting block 92 and a lower limiting block 96, and the upper limiting block 92 and the lower limiting block 96 extend outward to form an upper screw 93 and a lower screw 94.

Further, a first limiting surface 97 which is limited with the mounting hole 11 is arranged on the fixing block 91.

Further, a second limiting surface 95 for limiting the bottom case 1 is formed on each of the upper limiting block 92 and the lower limiting block 96.

Further, go up spacing block 92 and be formed with on the spacing block 96 down respectively and beat with drain pan 1 matched with and glue platform 98, beat and glue platform 98 and drain pan 1 and cooperate and form gluey groove 10, the last plane of gluey groove 10 is lower than beating gluey platform 98 upper plane, can not cause electrode column and pencil terminal electrical connection bad contact because of the height of some encapsulating can not be higher than beating gluey platform 98.

Further, the lower screw 94 of the electrode column assembly is connected with the fuse 3 sequentially through the copper flat gasket 6, the spring gasket 7 and the copper nut 8 from inside to outside, current is conducted to the fuse from the inside of the battery through the electrode column directly and then flows back to the inside of the current, the path is shortest, no redundant wiring harness flows around and is routed, and the structure is simple and reliable.

In this embodiment, the upper screw 93 and the lower screw 94 are replaced with a double-threaded-hole structure or a male-female threaded-bolt structure according to actual needs, and are flexible to use.

In the embodiment, the electrode column 9 is embedded in the plastic bottom shell 1 by adopting the production process of encapsulation injection molding; a sealing rubber groove is designed on the fuse cabin cover, and after the fuse cabin cover is assembled, the sealing ring is extruded and deformed, so that a complete sealing environment is formed in the fuse cabin. The shell and the fuse cabin are mutually isolated and sealed, and even if the fuse cabin cover is filled with water, the waterproof performance inside the battery cannot be influenced, so that the battery is dangerous.

In this embodiment, when the fuse breaks down and needs to be changed, only need demolish fuse hatch cover screw, can open the cabin, unscrew the nut and pull down, change the fuse, later only need the check nut whether to lock, whether the hatch cover sealing washer damages, can return the hatch cover dress, need not dismouting battery case, does not destroy battery inner waterproof structure, and safe and reliable is convenient.

In the embodiment, in order to meet the requirement of repeated disassembly and assembly of the hatch cover, the machine tooth screws are preferably selected as the hatch cover screws, and the nuts can be embedded into the battery shell by adopting an encapsulation injection molding process or a hot riveting process, so that the problem that screw holes and sliding teeth cannot be reused after the self-tapping screws are used for repeated disassembly and assembly is solved.

In this embodiment, for self inside waterproof of strengthening the fuse cabin, can also carry out the encapsulating to the fuse cabin alone and handle, here encapsulating can choose the good and easy silicon system embedment glue of clearing up of leakproofness earlier for use, when guaranteeing sealed waterproof performance, compromise and change the maintenance convenience.

The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the present invention.

Claims

1. The utility model provides a waterproof fuse cabin structure for battery which characterized in that, it includes: the fuse box is characterized by comprising a fuse cabin (2) arranged at the bottom of the bottom shell (1), a fuse (3) is connected in the fuse cabin (2), a fuse cabin cover (4) is connected to the fuse cabin (2), and the fuse cabin cover (4) covers the fuse (3) in the fuse cabin (2); an electrode column assembly is connected in the bottom shell (1), the upper portion of the electrode column assembly is located on the inner side of the bottom shell (1), and the lower portion of the electrode column assembly is connected with the fuse (3).

2. The waterproof fuse compartment structure for a battery according to claim 1, wherein: the electrode column assembly comprises an electrode column (9) connected to a mounting hole (11) of the bottom shell (1); the electrode column (9) comprises a fixing block (91) connected into the mounting hole (11), the upper end and the lower end of the fixing block (91) extend to form an upper limiting block (92) and a lower limiting block (96), and the upper limiting block (92) and the lower limiting block (96) extend outwards to form an upper screw (93) and a lower screw (94).

3. The waterproof fuse compartment structure for a battery according to claim 2, wherein: and a first limiting surface (97) which is limited with the mounting hole (11) is arranged on the fixing block (91).

4. The waterproof fuse compartment structure for a battery according to claim 2, wherein: and second limiting surfaces (95) which are limited with the bottom shell (1) are respectively formed on the upper limiting block (92) and the lower limiting block (96).

5. The waterproof fuse compartment structure for a battery according to claim 2, wherein: go up spacing piece (92) and be formed with respectively on spacing piece (96) down with drain pan (1) matched with beat gluey platform (98), beat gluey platform (98) and cooperate with drain pan (1) and form gluey groove (10).

6. The waterproof fuse compartment structure for a battery according to claim 2, wherein: the lower screw (94) of the electrode column assembly is connected with the fuse (3) sequentially through the copper flat gasket (6), the spring gasket (7) and the copper nut (8) from inside to outside.

7. The waterproof fuse compartment structure for a battery according to claim 5, wherein: the upper plane of the glue groove (10) is lower than the upper plane of the glue beating table (98).

8. The waterproof fuse compartment structure for a battery according to claim 1, wherein: and a sealing ring (5) is arranged at the joint of the fuse cabin cover (4) and the fuse cabin (2).