CN113540655A

CN113540655A - Waterproof lithium battery pack

Info

Publication number: CN113540655A
Application number: CN202110827548.3A
Authority: CN
Inventors: 周俊峰; 王凯; 王敬国; 王刚
Original assignee: Anhui Nasser Intelligent Technology Co ltd
Current assignee: Anhui Nasser Intelligent Technology Co ltd
Priority date: 2021-07-21
Filing date: 2021-07-21
Publication date: 2021-10-22

Abstract

The invention relates to the technical field of lithium battery packs, in particular to a waterproof lithium battery pack which comprises a case cover, a case body, screws and nuts, wherein the case cover comprises a first horizontal extending surface, a first vertical extending surface and an upper cavity for accommodating a battery block, the first horizontal extending surface is provided with a first through hole, the case body comprises a second horizontal extending surface, a second vertical extending surface, waterproof cotton and a lower cavity for accommodating the battery block, the outer wall of the second vertical extending surface is abutted against the inner wall of the first vertical extending surface, the second horizontal extending surface is provided with a second through hole, the waterproof cotton is provided with a third through hole, the nuts are fixedly connected with the bottom ends of the second through holes, and the screws sequentially penetrate through the first through hole, the third through hole and the second through hole to be in threaded connection with the nuts; the invention is convenient for dismounting the battery block and improves the sealing property, the water resistance and the dust resistance of the lithium battery pack.

Description

Waterproof lithium battery pack

Technical Field

The invention relates to the technical field of lithium battery packs, in particular to a waterproof lithium battery pack.

Background

With the wide application of electric forklifts, the electric forklifts are widely used in various loading and unloading factories as important production tools. The traditional lead-acid battery is gradually replaced by a portable, safe and long-life lithium battery due to the defects of large volume, low capacity, heavy mass, short service life, small overshoot and overdischarge quantity and the like. However, the electric forklift generally needs a plurality of lithium batteries connected together to form a suitable lithium battery pack to meet the use requirement because the electric forklift has higher requirements on the capacity and the voltage of the used batteries, so the lithium battery pack capable of better using and protecting the lithium batteries is born.

Lithium cell and the circuit board of protection lithium cell have been placed to lithium cell package on the market, if lithium cell electrode and circuit board expose in the air, lithium cell package will not effectively dustproof and waterproof to lead to the long easy back damage of using of lithium cell time, cause economic loss.

The fixed mode of box with the case lid is adopted to present lithium cell package more, fixes polylith lithium cell in the line body then with the case lid in addition, but has the inconvenient and poor scheduling problem of leakproofness of installation to, adopt the fixed mode of box with the case lid, the box degree of depth is too dark, and the battery piece is difficult for installing and dismantling, and box and case lid adopt simple and easy fix with screw simultaneously, do not possess dustproof and waterproof effect.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the waterproof lithium battery pack, the upper cavity and the lower cavity respectively limit the battery block from the upper part and the lower part, the integral depth of the case cover is deepened, the integral depth of the case body is reduced, the battery block is convenient to disassemble and assemble, and the first horizontal extension surface, the waterproof cotton, the second horizontal extension surface, the first vertical extension surface and the second vertical extension surface jointly improve the sealing property and the waterproof and dustproof performance of the lithium battery pack.

In order to achieve the purpose, the invention is realized by the following technical scheme:

the utility model provides a waterproof lithium battery pack, includes case lid, box, screw and nut, the case lid includes a horizontal extension face, a vertical extension face and is used for holding the upper plenum of battery block, a horizontal extension face has seted up the through-hole, the box includes No. two horizontal extension faces, No. two vertical extension faces, waterproof cotton and is used for holding the lower cavity of battery block, waterproof cotton's top surface with the bottom surface butt of a horizontal extension face, No. two vertical extension faces's outer wall with the inner wall butt of a vertical extension face, No. two through-holes have been seted up to No. two horizontal extension faces, No. three through-holes have been seted up to waterproof cotton, the nut with the bottom fixed connection of No. two through-holes, the screw pass a through-hole, No. three through-holes, No. two through-holes in proper order with nut threaded connection.

Furthermore, the bottom surface of the waterproof cotton is fixedly connected with the second horizontal extension surface.

Furthermore, the waterproof cotton is spliced with the second horizontal extension surface.

Further, waterproof cotton is equipped with the type of falling L inserted bar, No. two horizontal extension faces are equipped with the holding tank, the holding tank be equipped with type of falling L inserted bar matched with slot.

Further, the holding tank is located the intermediate position of adjacent No. 2 through-holes.

Further, the depth of the upper cavity is equal to the depth of the lower cavity.

Furthermore, the outer side surface of the box cover and the outer side surface of the box body are provided with hooks for hoisting.

Due to the adoption of the technical scheme, compared with the prior art, the invention has the beneficial effects that:

1) according to the invention, the battery block is placed in the lower cavity, the upper cavity limits the battery block from the upper part of the battery block, the integral depth of the box cover is deepened, and the integral depth of the box body is reduced, so that the battery block is convenient to mount and dismount, and the difficulty in mounting and dismounting the battery block due to the overlarge depth of the lower cavity is avoided;

2) the invention is subjected to the acting force of the weight of the box cover and the acting force of screwing and fastening the screw with the nut after the screw sequentially penetrates through the first horizontal extension surface, the waterproof cotton and the second horizontal extension surface from top to bottom, so that the first horizontal extension surface and the second horizontal extension surface interact and extrude the waterproof cotton, and meanwhile, the first vertical extension surface is abutted against the second vertical extension surface, and the sealing property of the lithium battery pack is jointly improved;

3) the first vertical extension surface and the second vertical extension surface increase the bending degree of a path for impurities such as water and dust to invade into the battery block, and the waterproof cotton further blocks water from invading into the battery block, so that the lithium battery pack disclosed by the invention is effectively waterproof and dustproof.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a waterproof cotton in example 1 of the present invention;

FIG. 3 is a schematic view showing the structure of the waterproof cotton connected to the second horizontal extension plane in example 2 of the present invention;

in the drawings, the reference numerals denote the following components:

1-a box cover, 11-a horizontal extension surface, 12-a vertical extension surface, 13-an upper cavity and 14-a through hole; 2-box body, 21-No. two horizontal extension surface, 22-No. two vertical extension surface, 23-waterproof cotton, 24-lower cavity, 25-No. two through hole, 26-No. three through hole, 27-inverted L-shaped inserted link, 28-holding tank, 29-slot; 3-a nut.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1 and fig. 2, the present invention provides a technical solution: a waterproof lithium battery pack comprises a case cover 1, a case body 2, a screw and a nut 3, wherein the case cover 1 is provided with a first horizontal extension surface 11, a first vertical extension surface 12 and an upper cavity 13 for accommodating a battery block through an integrated forming technology, the first horizontal extension surface 11 is provided with a first through hole 14, the case body 2 is provided with a second horizontal extension surface 21, a second vertical extension surface 22 and a lower cavity 24 for accommodating the battery block through the integrated forming technology, the waterproof lithium battery pack also comprises waterproof cotton 23, the bottom surface of the waterproof cotton 23 is fixedly connected with the second horizontal extension surface 21, the top surface of the waterproof cotton 23 is abutted against the bottom surface of the first horizontal extension surface 11, the outer wall of the second vertical extension surface 22 is abutted against the inner wall of the first vertical extension surface 12, the second horizontal extension surface 21 is provided with a second through hole 25, the waterproof cotton 23 is provided with a third through hole 26, the nut 3 is fixedly connected with the bottom end of the second through hole 25 through a welding or riveting mode, the screw passes through the first through hole 14, the third through hole 26 and the second through hole 25 in sequence and is in threaded connection with the nut 3.

Put into cavity 24 down with the battery piece, then with case lid 1 integral erection on box 2, go up cavity 13 and carry out spacingly from the top of battery piece to the battery piece, receive the effort of case lid 1 weight, and the screw from the top down passes in proper order behind a horizontal extension face 11, waterproof cotton 23 and No. two horizontal extension faces 21 and twists the effort of fastening with nut 3, a horizontal extension face 11 and No. two horizontal extension faces 21 interact and extrude waterproof cotton 23, vertical extension face 12 is inconsistent with No. two vertical extension faces 22 simultaneously. Fix the battery piece through upper chamber 13 and lower cavity 24, and vertical extension face 12 and No. two vertical extension faces 22 have increased the route bending degree that impurity such as water and dust invaded the battery piece moreover, and waterproof cotton 23 further blocks water invasion battery piece to realize the waterproof dirt-proof purpose of battery package, horizontal extension face 11, waterproof cotton 23 and No. two horizontal extension faces 21, vertical extension face 12 and No. two vertical extension faces 22 improve the leakproofness of lithium cell package jointly.

In the present embodiment, it is preferable that the depth of the upper cavity 13 is equal to the depth of the lower cavity 24. Deepen the whole degree of depth of case lid 1, and then reduce the whole degree of depth of box 2 to cavity 24 degree of depth is too big and increases the degree of difficulty of battery piece dismouting under easy to assemble and the dismantlement battery piece, is avoided.

In this embodiment, preferably, the outer side surfaces of the box cover 1 and the box body 2 are provided with hooks for hoisting, so that the lithium battery pack formed by the box cover 1, the box body 2 and the battery block is conveniently installed on the electric forklift.

Example 2

Referring to fig. 1 and fig. 3, the present invention provides a technical solution: a waterproof lithium battery pack comprises a case cover 1, a case body 2, a screw and a nut 3, wherein the case cover 1 is provided with a first horizontal extension surface 11, a first vertical extension surface 12 and an upper cavity 13 for accommodating a battery block through an integrated forming technology, the first horizontal extension surface 11 is provided with a first through hole 14, the case body 2 is provided with a second horizontal extension surface 21, a second vertical extension surface 22 and a lower cavity 24 for accommodating the battery block through the integrated forming technology, the waterproof lithium battery pack further comprises waterproof cotton 23, the bottom end of the waterproof cotton 23 is spliced with the second horizontal extension surface 21, the top surface of the waterproof cotton 23 is butted with the bottom surface of the first horizontal extension surface 11, the outer wall of the second vertical extension surface 22 is butted with the inner wall of the first vertical extension surface 12, the second horizontal extension surface 21 is provided with a second through hole 25, the waterproof cotton 23 is provided with a third through hole 26, the nut 3 is fixedly connected with the bottom end of the second through hole 25 through a welding or riveting mode, the screw passes through the first through hole 14, the third through hole 26 and the second through hole 25 in sequence and is in threaded connection with the nut 3.

Waterproof cotton 23 is connected with No. two horizontal extension face 21 through the mode of pegging graft, and after separation case lid 1 and box 2, convenient to detach waterproof cotton 23 keeps waterproof cotton 23's water-proof effects with adjustment or new waterproof cotton 23 of replacement.

In this embodiment, preferably, the waterproof cotton 23 is provided with an inverted L-shaped insertion rod 27, the second horizontally extending surface 21 is provided with a receiving groove 28, and the receiving groove 28 is provided with a slot 29 matched with the inverted L-shaped insertion rod 27. Installing the waterproof cotton 23, making the inverted L-shaped insert rod 27 contact with the bottom surface of the accommodating groove 28, pushing the waterproof cotton 23 towards the direction of the slot 29, and installing the waterproof cotton 23 on the second horizontal extension surface 21; the waterproof cotton 23 is detached, and the waterproof cotton 23 is pulled towards the lower cavity 24 until the inverted L-shaped inserting rod 27 exits the inserting groove 29.

In this embodiment, the accommodating groove 28 is preferably located at the middle position of the adjacent 2 through holes 25.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A waterproof lithium battery pack comprises a case cover (1), a case body (2), screws and nuts (3), and is characterized in that the case cover (1) comprises a first horizontal extension face (11), a first vertical extension face (12) and an upper cavity (13) for accommodating a battery block, a first through hole (14) is formed in the first horizontal extension face (11), the case body (2) comprises a second horizontal extension face (21), a second vertical extension face (22), waterproof cotton (23) and a lower cavity (24) for accommodating the battery block, the top face of the waterproof cotton (23) is abutted to the bottom face of the first horizontal extension face (11), the outer wall of the second vertical extension face (22) is abutted to the inner wall of the first vertical extension face (12), a second through hole (25) is formed in the second horizontal extension face (21), and a third through hole (26) is formed in the waterproof cotton (23), nut (3) with the bottom fixed connection of No. two through-holes (25), the screw pass No. one through-hole (14), No. three through-hole (26), No. two through-holes (25) in proper order with nut (3) threaded connection.

2. The waterproof lithium battery pack according to claim 1, wherein the bottom surface of the waterproof cotton (23) is fixedly connected with the second horizontally extending surface (21).

3. The waterproof lithium battery pack according to claim 1, wherein the waterproof cotton (23) is inserted into the second horizontally extending surface (21).

4. The waterproof lithium battery pack according to claim 3, wherein the waterproof cotton (23) is provided with an inverted L-shaped insertion rod (27), the second horizontally extending surface (21) is provided with a receiving groove (28), and the receiving groove (28) is provided with an insertion groove (29) matched with the inverted L-shaped insertion rod (27).

5. The waterproof lithium battery pack according to claim 4, wherein the receiving groove (28) is located at a middle position between the adjacent 2 through holes (25).

6. The waterproof lithium battery pack according to claim 1, wherein the depth of the upper cavity (13) is equal to the depth of the lower cavity (24).

7. The waterproof lithium battery pack according to claim 1, wherein hooks for lifting are arranged on the outer side surfaces of the box cover (1) and the box body (2).