Sealing structure of battery steel shell

Abstract

The utility model relates to the technical field of batteries, in particular to a sealing structure of a battery steel shell, which comprises a shell, an opening is arranged at the top of the shell, a top cover is arranged at the opening, mounting blocks are fixedly arranged at four corners of the top of the shell, mounting holes matched with the mounting blocks are arranged at four corners of the top cover, and rectangular grooves are arranged on hole walls of the mounting holes. A through hole is formed in the bottom of the rectangular groove, a locking mechanism is arranged between the rectangular groove and the through hole, a first annular step is arranged on the side wall of the top cover, a second annular step matched with the first annular step is arranged at the upper end of the shell, a plurality of sealing rings are arranged at the upper end of the second annular step, and a plurality of limiting grooves are evenly formed in the side, opposite to the top cover, of the shell. According to the utility model, the sealing effect is good, multi-layer sealing is provided, when one battery compartment leaks water, other battery compartments are not influenced, the packaging efficiency of the battery steel shell can be improved, and the labor intensity of workers is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a sealing structure for a battery steel shell. Background Art

[0002] The battery pack housing (also known as the battery tray, battery box, etc.), as a carrier for components such as the BMS, battery modules, high-voltage charging and discharging circuits, and cooling systems in the battery pack, is an important structural component of the new energy vehicle battery pack, playing a key role in protecting the components carried. The battery pack usually uses a steel battery pack housing or an aluminum battery pack housing.

[0003] In the prior art, the sealing effect of the battery steel shell is insufficient. Usually, only one sealing ring is used. Moreover, if there is a leak in one place, all batteries will be affected. In addition, the packaging efficiency of the battery steel shell is low, and workers need to manually screw in bolts one by one, increasing the labor intensity of the workers. Therefore, we have developed a sealing structure for the battery steel shell. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a sealing structure for a battery steel shell, which not only has a good sealing effect, provides multiple layers of sealing, and will not affect other battery compartments when one battery compartment leaks, but also can improve the packaging efficiency of the battery steel shell and reduce the labor intensity of the workers, so as to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A sealing structure for a battery steel shell, including a housing. An opening is provided at the top of the housing, and a top cover is provided at the opening. Mounting blocks are fixedly provided at the four corners of the top of the housing. Mounting holes corresponding to the mounting blocks are provided at the four corners of the top cover. A rectangular groove is provided on the inner wall of the mounting hole, and a through hole is provided at the bottom of the rectangular groove. A locking mechanism is provided between the rectangular groove and the through hole. A first annular step is provided on the side wall of the top cover, and a second annular step matching the first annular step is provided at the upper end of the housing. A plurality of sealing rings are provided at the upper end of the second annular step. A plurality of limiting grooves are evenly provided on the opposite sides of the housing and the top cover, and a sealing frame is provided between each pair of opposite limiting grooves. Both the upper and lower sides of the sealing frame extend into the corresponding limiting grooves.

[0007] Preferably, the locking mechanism includes a locking block and a pull rod. One end of the locking block extends outside the rectangular groove. A locking groove matching the locking block is provided on the side wall of the mounting block. The pull rod is slidably arranged in the through hole, and both ends of the pull rod extend out of the through hole. One end of the pull rod is fixedly connected to the locking block. A spring is movably sleeved on the rod wall of the pull rod between the locking block and the through hole.

[0008] Preferably, a bevel is provided on the lower side of one end of the locking block located outside the rectangular groove.

[0009] Preferably, a pull block is fixedly provided at one end of the pull rod located outside the top cover.

[0010] Preferably, a sealing gasket is fixedly provided at the bottom of the limiting groove.

[0011] Preferably, a communicating pipe is provided between multiple sealing frames.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] For the sealing structure of the battery steel shell, by providing the mounting block, top cover, shell, sealing frame, sealing ring, communicating pipe, pull rod, locking block, spring, and pull block, the sealing frame is placed in the limiting groove, then the battery is placed in the sealing frame, the top cover is placed on the shell from top to bottom, and the mounting block is snapped into the corresponding mounting groove. The mounting block horizontally pushes the locking block through the bevel, and while the locking block compresses the spring, it completely slides into the rectangular groove. When the locking block corresponds to the locking groove position, the spring pushes one end of the locking block to snap into the locking groove. It not only has a good sealing effect and provides multiple layers of sealing, so that when one battery compartment leaks water, it will not affect other battery compartments, but also can improve the packaging efficiency of the battery steel shell and reduce the labor intensity of the staff. Description of the Drawings

[0014] Figure 1 It is a schematic structural diagram of a sealing structure of a battery steel shell.

[0015] Figure 2 It is a schematic structural diagram of the locking mechanism.

[0016] Figure 3 It is a schematic internal structure diagram of the shell.

[0017] Figure 4 It is a schematic bottom structure diagram of the top cover.

[0018] Figure 5 For Figure 2 The enlarged schematic diagram of the partial A part in

[0019] In the figure: 1, mounting block; 2, top cover; 3, shell; 4, sealing frame; 5, sealing ring; 6, communicating pipe; 7, pull rod; 8, locking block; 9, spring; 10, pull block. Detailed Embodiment

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figures 1 to 5 , the present invention provides a technical solution:

[0022] A sealing structure for a battery steel shell, including a housing 3. There is an opening at the top of the housing 3, and a top cover 2 is provided at the opening. Mounting blocks 1 are fixedly provided at the four corners of the top of the housing 3. Mounting holes matching the mounting blocks 1 are provided at the four corners of the top cover 2. A rectangular groove is opened on the hole wall of the mounting hole, and a through hole is opened at the bottom of the rectangular groove. A locking mechanism is provided between the rectangular groove and the through hole. A first annular step is provided on the side wall of the top cover 2, and a second annular step matching the first annular step is provided at the upper end of the housing 3. A plurality of sealing rings 5 are provided at the upper end of the second annular step, and the sealing rings 5 are arranged on each level of the second annular step. A plurality of limiting grooves are evenly opened on the opposite sides of the housing 3 and the top cover 2, and a sealing frame 4 is provided between each pair of opposite limiting grooves. Both the upper and lower sides of the sealing frame 4 extend into the corresponding limiting grooves.

[0023] The locking mechanism includes a locking block 8 and a pull rod 7. One end of the locking block 8 extends outside the rectangular groove. A locking groove matching the locking block 8 is opened on the side wall of the mounting block 1. The pull rod 7 is slidably arranged in the through hole, and both ends of the pull rod 7 extend into the through hole. One end of the pull rod 7 is fixedly connected to the locking block 8, and a spring 9 is movably sleeved on the rod wall of the pull rod 7 between the locking block 8 and the through hole.

[0024] An inclined surface is opened on the lower side of the end of the locking block 8 outside the rectangular groove, and the inclined surface facilitates the horizontal pushing of the locking block 8 by the mounting block 1.

[0025] A pull block 10 is fixedly provided at one end of the pull rod 7 outside the top cover 2, and the pull block 10 facilitates pulling the pull rod 7.

[0026] A sealing gasket is fixedly provided at the bottom of the limiting groove, and the sealing gasket improves the sealing performance between the limiting groove and the sealing frame 4.

[0027] A communication pipe 6 is provided between the plurality of sealing frames 4, and the communication pipe 6 can provide sealing protection for the parallel wires between the single batteries.

[0028] In use, place the sealing frame 4 in the limit groove, then place the battery in the sealing frame 4. Place the top cover 2 on the housing 3 from top to bottom, and make the mounting block 1 snap into the corresponding mounting groove. The mounting block 1 horizontally pushes the locking block 8 through the inclined surface. While the locking block 8 squeezes the spring 9, it completely slides into the rectangular groove. When the locking block 8 corresponds to the locking groove in position, the spring 9 pushes one end of the locking block 8 to snap into the locking groove. It not only has a good sealing effect and provides multiple layers of sealing, so that when one battery compartment leaks water, it will not affect other battery compartments, but also can improve the packaging efficiency of the battery steel shell and reduce the labor intensity of the staff.

[0029] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sealing structure for a battery steel shell, comprising a shell (3), characterized in that: The shell (3) is provided with an opening at the top, and a top cover (2) is provided at the opening. Mounting blocks (1) are fixedly provided at the four corners of the top of the shell (3). Mounting holes matching the mounting blocks (1) are provided at the four corners of the top cover (2). A rectangular groove is provided on the hole wall of the mounting hole. A through hole is provided at the bottom of the rectangular groove. A locking mechanism is provided between the rectangular groove and the through hole. A first annular step is provided on the side wall of the top cover (2). A second annular step matching the first annular step is provided at the upper end of the shell (3). A plurality of sealing rings (5) are provided at the upper end of the second annular step. A plurality of limiting grooves are evenly provided on the opposite side of the shell (3) and the top cover (2). A sealing frame (4) is provided between the two opposite limiting grooves. The upper and lower sides of the sealing frame (4) extend into the corresponding limiting grooves.

2. The sealing structure of a battery steel shell according to claim 1, characterized in that: The locking mechanism comprises a locking block (8) and a pull rod (7), one end of the locking block (8) extends to the outside of the rectangular groove, the side wall of the mounting block (1) is provided with a locking groove matching the locking block (8), the pull rod (7) is slidably arranged in the through hole, both ends of the pull rod (7) extend to the through hole, one end of the pull rod (7) is fixedly connected to the locking block (8), and a spring (9) is movably sleeved on the wall of the pull rod (7) between the locking block (8) and the through hole.

3. The sealing structure of a battery steel shell according to claim 2, characterized in that: The locking block (8) has an inclined surface on the lower side of one end outside the rectangular groove.

4. The sealing structure of a battery steel shell according to claim 2, characterized in that: A pull block (10) is fixedly provided at one end of the pull rod (7) located outside the top cover (2).

5. The sealing structure of a battery steel shell according to claim 1, characterized in that: A sealing gasket is fixedly arranged at the bottom of the limiting groove.

6. The sealing structure of a battery steel shell according to claim 1, characterized in that: A connecting pipe (6) is provided between the plurality of sealing frames (4).

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