CN211297293U

CN211297293U - Lithium cell high temperature automatic protection shield

Info

Publication number: CN211297293U
Application number: CN201922453520.9U
Authority: CN
Inventors: 洪亮
Original assignee: Shenzhen Hongweichuang Electronics Co ltd
Current assignee: Shenzhen Hongweichuang Electronics Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-08-18
Anticipated expiration: 2029-12-30

Abstract

The utility model discloses a lithium cell high temperature automatic protection shield, including the protection shield body, the through-hole has all been seted up to four corners of protection shield body, protection shield body below is equipped with the protective housing, four turning on protective housing top all set up threaded hole, the ventilation hole is seted up a plurality ofly to the both sides of protective housing, the ventilation hole surface is equipped with dust keeper, the bottom hole has been seted up at the protective housing middle part, the inside fixedly connected with air-blast device of bottom hole, air-blast device's suction opening department is equipped with the fin a plurality ofly, and this kind of lithium cell high temperature automatic protection shield has increased the dust keeper in ventilation hole on the protection shield shell, has solved fin during operation surface and has easily produced the problem of floating ash to the working property of lithium cell.

Description

Lithium cell high temperature automatic protection shield

Technical Field

The utility model relates to a lithium battery protection shield technical field specifically is a lithium cell high temperature automatic protection shield.

Background

The high-temperature automatic protection board of the lithium battery is used for charging and discharging protection of the series lithium battery pack; when the battery pack is fully charged, the voltage difference between the single batteries can be ensured to be smaller than a set value (generally +/-20 mV), the uniform charging of the single batteries of the battery pack is realized, and the charging effect in a series charging mode is effectively improved; simultaneously, the overvoltage, undervoltage, overcurrent, short circuit and overtemperature states of each single battery in the battery pack are detected, so that the service life of the battery is protected and prolonged; the undervoltage protection prevents each single battery from being damaged by overdischarge when the single battery is used for discharging.

Lithium cell high temperature automatic protection shield is at long-term during operation, its inside can produce certain heat, high temperature can lead to the work efficiency of protection shield to reduce, the circuit consume is great, the life of protection shield has been reduced, so can generally be equipped with heat abstractor for the battery protection shield, but heat abstractor is at the during operation, can bring the dust from the air intake, it is long-time so, the surface of fin can produce the one deck and float the ash, consequently, lead to the fin low to the heat-sinking capability of protection shield, reduce the performance of protection shield on the one hand, on the other hand reduces the life of protection shield, therefore, we provide a lithium cell high temperature automatic protection.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lithium cell high temperature automatic protection shield to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a high-temperature automatic protection plate for a lithium battery comprises a protection plate body, wherein through holes are formed at four corners of the protection plate body, a protective shell is arranged below the protective plate body, threaded holes are formed in four corners of the top end of the protective shell, the protective plate is movably connected on the protective shell through the threaded holes at the four corners, the bottom end of the protective shell is fixedly provided with a supporting plate, air can flow below the protective shell through the supporting plate, a plurality of ventilation holes are formed in the two sides of the protective shell, the ventilation holes prevent dust from entering the surfaces of the cooling fins, the surface of the ventilation hole is provided with a dustproof device which prevents floating ash from being generated in the through hole, the middle part of the protective shell is provided with a bottom hole, the inside fixedly connected with air-blowing device of bottom outlet, air-blowing device suction opening department is equipped with the fin a plurality ofly, and fin and air-blowing device dispel the heat to the protection shield body.

Preferably, square grooves are formed in the two ends of the protective shell, the ventilation holes are formed in the square grooves, and external air enters the protective shell through the ventilation holes.

Preferably, the side wall of the square groove is provided with a sliding groove, and the sliding groove is movably connected with a dustproof device, so that the dustproof device can be conveniently mounted and dismounted.

Preferably, dust keeper is including the dust screen, the fixed gleitbretter that is equipped with in dust screen both ends, through the gleitbretter in the inside slip of spout, dust keeper can cover on ventilation hole surface, the tail end of dust screen is equipped with the pulling recess, and through the pulling recess, the dust screen slides, and rethread bolt, dust screen cover are on square groove surface.

Preferably, the fin is equipped with a plurality ofly, and becomes the equidistance and arranges, the fin is including square support frame, square support frame fixed mounting is in the bottom middle part of protective housing, the fin passes through square support frame to be fixed inside the protective housing.

Preferably, the blowing device comprises a blowing motor, a blowing fan blade and a supporting shaft, an output shaft of the blowing motor is fixed with the blowing fan blade, and the blowing device is fixedly installed in a bottom hole of the protective shell through the supporting shaft.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses increased the dust keeper in ventilation hole on the protection shield shell, dust keeper is convenient for install and dismantle, can wash at any time, has solved the inside easy problem that floats the ash that produces in ventilation hole, has improved fin performance to improve lithium cell high temperature automatic protection shield's working property, prolonged life.

Drawings

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

FIG. 2 is a schematic view of the overall structure of the present invention in another direction;

FIG. 3 is a schematic view of the dust screen of the present invention;

FIG. 4 is a schematic view of the blower of the present invention;

fig. 5 is an enlarged view of the area a in fig. 1.

In the figure: 1-a protective plate body; 2-a through hole; 3-protective shell; 4-a threaded hole; 5-a vent hole; 6-a dust-proof device; 7-a blower device; 8-a heat sink; 9-a support plate; 10-a square groove; 11-a chute; 12-dust screen; 13-a slide sheet; 14-pulling the groove; 15-square support frame; 16-a blower motor; 17-blower fan blade, 18-supporting shaft.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a high-temperature automatic protection plate for a lithium battery comprises a protection plate body 1, through holes 2 are formed at four corners of the protection plate body 1, a protection shell 3 is arranged below the protection plate body 1, threaded holes 4 are formed at four corners at the top end of the protection shell 3, the protection shell 3 is rotatably connected with the protection plate body 1, a support plate 9 is fixedly arranged at the bottom end of the protection shell 3, air can flow at the lower end of the protection shell 3 through the support plate 9, a plurality of ventilation holes 5 are formed at two sides of the protection shell 3, a dustproof device 6 is arranged on the surface of the ventilation holes 5, a bottom hole is formed in the middle of the protection shell 3, an air blowing device 7 is fixedly connected inside the bottom hole, a plurality of cooling fins 8 are arranged at an air suction opening of the air blowing device 7, each cooling, the heat radiation fins 8 absorb the heat generated by the protective plate body 1, and the air is taken in through the air vents 5 and then the hot air is discharged through the air blowing device 7.

The utility model discloses a dustproof device for cleaning dust screen, including square groove 10, has seted up spout 11 on the lateral wall of square groove 10, dust keeper 6 and spout 11 swing joint, dust keeper 6 is including dust screen 12, the both ends of dust screen 12 are equipped with gleitbretter 13, the bottom of dust screen 12 is equipped with pulling recess 14, and through pulling recess 14, gleitbretter 13 on the dust screen 12 slides at spout 11, and when reacing required position, the bolt of rethread dust screen 12 bottom, dust screen 12 cover on the surface in ventilation hole 5, reach the dustproof effect to the ventilation hole, and dust screen 12 swing joint can wash dust screen 12 at any time.

The air blowing device 8 comprises an air blowing motor 16, an air blowing fan 17 and a supporting shaft 18, the output end of the air blowing motor 16 is fixed with the air blowing fan 17, the air blowing device 8 is fixedly installed at the bottom end of the protective shell 3 through the supporting shaft 18, the air blowing motor 16 is started, the air blowing fan 17 rotates, and heat absorbed by the radiating fins 8 is exhausted.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a lithium cell high temperature automatic protection shield, includes protection shield body (1), its characterized in that: four corners of protection shield body (1) all are equipped with through-hole (2), protection shield body (1) below is equipped with protective housing (3), four turnings on protective housing (3) top all are equipped with screw hole (4), ventilation hole (5) have been seted up to protective housing (3) both sides a plurality of, ventilation hole (5) surface is equipped with dust keeper (6), the bottom hole has been seted up at protective housing (3) middle part, the inside fixedly connected with air-blast device (7) of bottom hole, the air suction opening department of air-blast device (7) is equipped with fin (8) a plurality ofly.

2. The high-temperature automatic protection plate for lithium battery as claimed in claim 1, wherein: the bottom mounting of protective housing (3) has backup pad (9), square groove (10) have been seted up at the both ends of protective housing (3), ventilation hole (5) are seted up on square groove (10).

3. The high-temperature automatic protection plate for lithium battery as claimed in claim 2, wherein: the side wall of the square groove (10) is provided with a sliding groove (11), and the dustproof device (6) is movably connected with the protective shell (3) through the sliding groove (11).

4. The high-temperature automatic protective plate for lithium battery as claimed in claim 3, wherein: the dustproof device (6) comprises a dustproof net (12), and the dustproof net (12) is movably connected with the protective shell (3) through bolts.

5. The high-temperature automatic protection plate for lithium battery as claimed in claim 4, wherein: the dustproof net is characterized in that sliding pieces (13) are fixedly arranged at two ends of the dustproof net (12), and the sliding pieces (13) slide in the sliding grooves (11).

6. The high-temperature automatic protective plate for lithium battery as claimed in claim 5, wherein: the tail end of the dustproof net (12) is provided with a pulling groove (14).

7. The high-temperature automatic protection plate for lithium battery as claimed in claim 1, wherein: the radiating fin (8) is fixedly connected with a square support frame (15), and the square support frame (15) is fixedly installed at the bottom end of the protective shell (3).

8. The high-temperature automatic protection plate for lithium battery as claimed in claim 1, wherein: the air blowing device (7) comprises an air blowing motor (16), an air blowing fan blade (17) and a supporting shaft (18), the output end of the air blowing motor (16) is fixed with the air blowing fan blade (17), and the air blowing device (7) is fixedly installed in a bottom hole of the protective shell (3) through the supporting shaft (18).