CN214254548U

CN214254548U - Low temperature resistant structure of outdoor lithium battery pack

Info

Publication number: CN214254548U
Application number: CN202120417874.2U
Authority: CN
Inventors: 杜杰; 胡正波; 潘晓成
Original assignee: Ningbo Hongyuan Electronic Technology Co ltd
Current assignee: Ningbo Hongyuan Electronic Technology Co ltd
Priority date: 2021-02-25
Filing date: 2021-02-25
Publication date: 2021-09-21
Anticipated expiration: 2031-02-25

Abstract

The utility model belongs to the technical field of the lithium cell technique and specifically relates to an outdoor lithium cell group prevents low temperature structure, including the protection outer container, the block is equipped with the case lid on the protection outer container, the inside protection inner box that is equipped with of protection outer container, equidistance and fixed first fixed plate that is equipped with on the inner diapire of protection outer container, equidistance and vertical fixation are equipped with first support column on the first fixed plate, first support column is kept away from one of first fixed plate and is served the fixed second fixed plate that is equipped with, the side that the second fixed plate and first support column carried on the back mutually is fixed on the lateral wall of protection inner box. The utility model discloses when using, place lithium cell group inside the protection box, cover the case lid, start the constant temperature electric heating board, let the constant temperature electric heating board be in under the operating condition, utilize the air of constant temperature electric heating board between to the protection outer container and the protection interior box to heat, and then reach the heat retaining purpose of the inside lithium cell group of box in the protection.

Description

Low temperature resistant structure of outdoor lithium battery pack

Technical Field

The utility model relates to a lithium cell technical field especially relates to an outdoor lithium cell group prevents low temperature structure.

Background

The power supply system of the communication base station comprises three major parts, namely mains supply, an AC/DC power supply and a storage battery, wherein the storage battery is mainly used as a backup power supply to provide electric energy for the base station when the mains supply is powered off; with the development of battery technology, the lithium battery gradually replaces a lead-acid battery and becomes the main force of a power distribution battery; the lithium battery for the base station has higher requirement on the environmental temperature of the base station, and the normal working temperature of the lithium battery for the base station is-20-60 ℃ generally according to different manufacturers; when the environmental temperature of the base station is lower than minus 20 ℃, the electrolyte solution reaches the freezing point, the charging speed of the battery is also greatly reduced, for example, when the environmental temperature is minus 40 ℃, the lithium ion battery can only discharge 10 to 30 percent of electric quantity; when the environmental temperature is higher than 60 ℃, the electrochemical balance in the lithium ions can be damaged, side reactions can be caused, the service life of the lithium battery can be shortened, and even the risk of explosion of the lithium battery exists; because the universality of the base station, some base stations have severe working environments and are in a low-temperature state for a long time, and the existing lithium battery pack does not have a low-temperature prevention structure, so that the low-temperature prevention structure of the outdoor lithium battery pack is needed to meet the requirement.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcoming that the low temperature structure is not prevented on the lithium cell group that exists among the prior art, and the outdoor lithium cell group that proposes prevents the low temperature structure.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

designing an outdoor lithium battery pack low temperature prevention structure, comprising a protective outer box, wherein a box cover is clamped on the protective outer box, a protective inner box is arranged inside the protective outer box, a first fixed plate is equidistantly and fixedly arranged on the inner bottom wall of the protective outer box, first supporting columns are equidistantly and vertically fixedly arranged on the first fixed plate, a second fixed plate is fixedly arranged on one end, away from the first fixed plate, of each first supporting column, the side face, opposite to each other, of each second fixed plate and the corresponding first supporting column is fixed on the outer side wall of the protective inner box, a first base plate is fixedly arranged on the inner bottom wall of the protective outer box between every two adjacent first fixed plates, a constant temperature electric heating plate is fixedly arranged on the first base plate, a square connecting plate is fixedly arranged between the outer side wall of the protective inner box and the inner side wall of the protective outer box together, and a heat insulation plate is fixedly arranged on the side wall of the box cover inside the protective outer box, and the heat-insulation plate, the connecting plate and the protective inner box are in mutual contact.

Preferably, the box cover and the heat insulation plate are jointly penetrated through and fixedly provided with a cylinder.

Preferably, the lateral wall and the bottom wall of the protective inner box are provided with second holes at equal intervals and in a penetrating mode.

Preferably, the equidistance just fixes being equipped with the third fixed plate on the inner diapire of box in the protection, the fixed second support column that is equipped with on the third fixed plate, it is a plurality of jointly fix being equipped with the bearing plate on the second support column.

Preferably, the bearing plate is provided with first holes at equal intervals and in a penetrating manner.

The utility model provides a pair of low temperature structure is prevented to outdoor lithium cell group, beneficial effect lies in: this low temperature structure is prevented to outdoor lithium cell group when using, places lithium cell group inside the box in the protection, covers the case lid, starts the constant temperature electrical heating board, lets the constant temperature electrical heating board be in under the operating condition, utilizes the air of constant temperature electrical heating board between to the box in protecting outer container and the protection to heat, and then reaches the heat retaining purpose of the inside lithium cell group of box in the protection.

Drawings

Fig. 1 is a schematic structural view of a low temperature resistant structure of an outdoor lithium battery pack according to the present invention;

fig. 2 is a top view of the outdoor lithium battery pack low temperature prevention structure shown in fig. 1 at a-a;

fig. 3 is a top view of the outdoor lithium battery pack low temperature prevention structure shown in fig. 1, which is shown in B-B.

In the figure: the protective box comprises a protective outer box 1, a box cover 2, a protective inner box 3, a connecting plate 4, a first fixing plate 5, a first supporting column 6, a second fixing plate 7, a first backing plate 8, a constant-temperature electric heating plate 9, a third fixing plate 10, a second supporting column 11, a bearing plate 12, a first hole 13, a heat insulation plate 14, a cylinder 15 and a second hole 16.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Example 1

Referring to fig. 1-3, an outdoor lithium cell group prevents low temperature structure, including protection outer container 1, protection outer container 1 adopts the heat insulating board to make, the block is equipped with case lid 2 on the protection outer container 1, box 3 in the protection is equipped with in the protection outer container 1 inside, equidistance and fixed being equipped with first fixed plate 5 on the inner bottom wall of protection outer container 1, equidistance and vertical fixation are equipped with first support column 6 on the first fixed plate 5, first support column 6 is kept away from one of first fixed plate 5 and is served fixedly and be equipped with second fixed plate 7, the side that second fixed plate 7 and first support column 6 carried on the back mutually is fixed on the lateral wall of box 3 in the protection, fixed being equipped with first backing plate 8 on the inner bottom wall of protection outer container 1 between two adjacent first fixed plates 5, fixed being equipped with constant temperature electrical heating board 9 on the first backing plate 8, impartial distance and run through on the lateral wall of box 3 and the diapire in the protection is equipped with second hole 16. Box 3 adopts the heat-conducting plate to make in the protection, box 3 in the protection that the heat-conducting plate was made, and in addition the setting of second hole 16, can let constant temperature electric heating board 9 better must heat the air around the lithium cell group.

The outer side wall of box 3 and the inside wall of protection outer container 1 in the protection are fixed jointly and are equipped with square connecting plate 4 between, the fixed heated board 14 that is equipped with on the lateral wall of the inside case lid 2 of protection outer container 1, and heated board 14 and connecting plate 4 and the equal mutual contact of box 3 in the protection, run through jointly and fixed being equipped with drum 15 on case lid 2 and the heated board 14. Connecting wires on the lithium battery pack penetrate out of the protective outer box 1 through the cylinder 15.

This low temperature structure is prevented to outdoor lithium cell group when using, places lithium cell group inside 3 boxes in the protection, covers case lid 2, starts constant temperature electrical heating board 9, lets constant temperature electrical heating board 9 be in under the operating condition, utilizes constant temperature electrical heating board 9 to heat the air between 3 boxes in protection outer container 1 and the protection, and then reaches the heat retaining purpose of 3 inside lithium cell groups of box in to the protection.

Example 2

In embodiment 1, direct contact between the bottom of lithium cell group and the interior diapire of box 3 in the protection can not let the bottom of lithium cell group better contact with the hot-air, refer to fig. 1-3, as the utility model discloses a another preferred embodiment, as the difference with embodiment 1 lies in, equidistance and fixed third fixed plate 10 that is equipped with on the interior diapire of box 3 in the protection, and the fixed second support column 11 that is equipped with on third fixed plate 10, and the common fixed bearing plate 12 that is equipped with on a plurality of second support columns 11, equidistance and run through on bearing plate 12 and be equipped with first hole 13. With the help of the second support columns 11 and the first holes 13, the bottom of the lithium battery pack is not directly contacted with the inner bottom wall of the protective inner box 3, and uniform heating around the lithium battery pack is facilitated.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The outdoor lithium battery pack low-temperature-resistant structure is characterized by comprising a protective outer box (1), wherein a box cover (2) is arranged on the protective outer box (1) in a clamping manner, a protective inner box (3) is arranged inside the protective outer box (1), a first fixing plate (5) is fixedly arranged on the inner bottom wall of the protective outer box (1) at equal intervals, a first supporting column (6) is fixedly arranged on the first fixing plate (5) at equal intervals and vertically, a second fixing plate (7) is fixedly arranged on one end, away from the first fixing plate (5), of the first supporting column (6), the side faces, back to each other, of the second fixing plate (7) and the first supporting column (6) are fixed on the outer side wall of the protective inner box (3), a first base plate (8) is fixedly arranged on the inner bottom wall of the protective outer box (1) between every two adjacent first fixing plates (5), and a constant-temperature electric heating plate (9) is fixedly arranged on the first base plate (8), the box (3) all contacts each other in the lateral wall of box (3) and the protection on the lateral wall of protection in (3) and the common fixed square connecting plate (4) that is equipped with between the inside wall of protection outer container (1), fixed heated board (14) that is equipped with on the lateral wall of the inside case lid (2) of protection outer container (1), and heated board (14) and connecting plate (4) and the protection.

2. The low temperature prevention structure of an outdoor lithium battery pack as claimed in claim 1, wherein a cylinder (15) is fixedly arranged on the box cover (2) and the heat insulation plate (14) in a penetrating manner.

3. An outdoor lithium battery pack low temperature prevention structure as claimed in claim 1, wherein the side wall and the bottom wall of the protective inner box (3) are equally spaced and have a second hole (16) through.

4. An outdoor lithium battery pack low temperature prevention structure according to claim 1, wherein a third fixing plate (10) is fixed and arranged on the inner bottom wall of the protective inner box (3) at equal intervals, a second supporting column (11) is fixed on the third fixing plate (10), and a bearing plate (12) is fixed on the plurality of second supporting columns (11) together.

5. An outdoor lithium battery pack anti-low temperature structure according to claim 4, characterized in that the bearing plate (12) is provided with first holes (13) at equal intervals and through.