CN216597736U

CN216597736U - Lithium cell high temperature protection architecture

Info

Publication number: CN216597736U
Application number: CN202123104603.0U
Authority: CN
Inventors: 杨伟东
Original assignee: Ningde Shidai Keshida Technology Co ltd
Current assignee: Ningde Shidai Keshida Technology Co ltd
Priority date: 2021-12-12
Filing date: 2021-12-12
Publication date: 2022-05-24
Anticipated expiration: 2031-12-12

Abstract

The utility model discloses a high-temperature protection structure of a lithium battery, which comprises a shell, wherein heat dissipation holes are formed in the rear end of the shell, semiconductor refrigeration sheets are arranged at positions, close to the heat dissipation holes, in the inner side of the shell, heat absorption surfaces of the semiconductor refrigeration sheets face the inner side of the shell, heat dissipation surfaces of the semiconductor refrigeration sheets face the heat dissipation holes, an end cover is arranged at the top end of the shell, a fixing plate is arranged at the rear end of the end cover, which is aligned with the heat dissipation holes, and an exhaust fan is arranged on the fixing plate. Meanwhile, the cooling device with the structure has high cooling efficiency, and can cool the lithium battery quickly and effectively.

Description

Lithium cell high temperature protection architecture

Technical Field

The utility model relates to the technical field of lithium batteries, in particular to a high-temperature protection structure of a lithium battery.

Background

The lithium cell need install high temperature protection device on the shell of lithium cell at the in-process of production and processing, guarantees that the lithium cell can not damage because of the high temperature at the in-process of function, and current lithium cell high temperature protection device adopts the cooling fan to cool down to the lithium cell more, but the mode of this kind of cooling has following problem: the cooling mode of the existing cooling fan cannot quickly cool the lithium battery, has poor cooling effect, and easily causes insufficient cooling of the lithium battery and spontaneous combustion.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a high-temperature protection structure of a lithium battery, and aims to solve the problems that the conventional cooling mode of a cooling fan cannot rapidly cool the lithium battery, the cooling effect is poor, and spontaneous combustion is easily caused due to insufficient cooling of the lithium battery.

The utility model is realized by the following steps:

a high-temperature protection structure of a lithium battery comprises a shell, wherein heat dissipation holes are formed in the rear end of the shell, semiconductor refrigeration pieces are arranged at positions, close to the heat dissipation holes, of the inner side of the shell, heat absorption surfaces of the semiconductor refrigeration pieces face the inner side of the shell, heat dissipation surfaces of the semiconductor refrigeration pieces face the heat dissipation holes, an end cover is arranged at the top end of the shell, a fixing plate is arranged at the rear end of the end cover and aligned with the heat dissipation holes, and an exhaust fan is arranged on the fixing plate; the shell is convenient for carry out the bearing to the lithium cell, make things convenient for the installation and the fixing of lithium cell, this kind of structure also is convenient for cooperate each subassembly to cool down the processing to the lithium cell simultaneously, the louvre is convenient for discharge fast the heat that the lithium cell produced, the semiconductor refrigeration piece is convenient for absorb fast the heat that the lithium cell produced, and discharge the heat that absorbs from the louvre, thereby reach the purpose that carries out rapid cooling to the lithium cell, the end cover is convenient for seal the shell top, make things convenient for whole device can effectual protection lithium cell, the fixed plate is convenient for install the fan of bleeding, what conveniently the fan of bleeding carries out the processing of dispelling the heat to the lithium cell.

Furthermore, the front end of the shell is provided with an electric interface, a mounting cavity is arranged at the position close to the front end inside the shell, and a circuit board is arranged inside the mounting cavity; connect the electric mouth and be convenient for cooperate the wire to the convenience connects the electricity to the shell, is convenient for go away the electric quantity transmission of lithium cell, and the installation cavity is convenient for install the circuit board, and the stable use of the circuit board of being convenient for, the circuit board is convenient for the electric quantity of whole lithium cell, the convenient use of controlling the lithium cell.

Furthermore, a plurality of compression bolts are arranged at the positions, close to the top ends, of the two sides of the shell, and two pairs of clamping plates are symmetrically arranged at the positions, close to the heat dissipation holes, of the two sides of the inner side of the shell; the clamp bolt is convenient for fixing the end cover, facilitates installation and use of the end cover, facilitates clamping of the semiconductor refrigeration piece, facilitates installation and disassembly of the semiconductor refrigeration piece, and facilitates flexible use of the semiconductor refrigeration piece.

Furthermore, a connector is arranged on the top of the front end face of the semiconductor refrigerating sheet, and a lead is arranged on the connector; the connector and the wire are convenient to mutually cooperate, so that the wire is conveniently connected with the lithium battery, the semiconductor refrigeration piece is conveniently electrified, and the normal heat dissipation of the semiconductor refrigeration piece is convenient.

Furthermore, a plug board is arranged at the position, aligned with the installation cavity, of the bottom end of the end cover, an insertion ring is arranged on the bottom surface of the end cover, two air exhaust holes are symmetrically formed in the fixing plate, and a plurality of connecting grooves are formed in the periphery of the air exhaust holes; the picture peg is convenient for insert the installation cavity, and it is inboard that the insert ring is convenient for insert the shell to make things convenient for the end cover to cooperate the stable installation of shell on the shell top, the extraction opening is convenient for install the fan of bleeding, thereby conveniently the fan of bleeding cooperation louvre carries out complementary heat dissipation, the spread groove is convenient for cooperate the bolt, thereby the convenience links together end cover and shell through the bolt.

Further, a motor is arranged on the inner side of the air exhaust fan, the motor and the air exhaust fan are connected together through a connecting rod, an impeller is arranged at the output end of the motor, and through holes are formed in four corners of the air exhaust fan; the motor is convenient for drive the impeller rotatory, makes things convenient for the impeller to drive the air current to reach radiating purpose, the connecting rod is convenient for fixed motor, the function of the motor of being convenient for, the perforation bolt of being convenient for passes, thereby the convenience is fixed the extraction fan on the fixed plate through the bolt.

Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, the structure of the lithium battery shell is improved and optimized, so that the lithium battery shell can rapidly dissipate heat of the lithium battery through the cooperation of the semiconductor refrigeration piece and the heat dissipation fan, the damage of the lithium battery due to overhigh temperature is avoided, meanwhile, the cooling device with the structure has high cooling efficiency, the lithium battery can be rapidly and effectively cooled, and the problem that the lithium battery is difficult to rapidly cool when the temperature of the lithium battery is overhigh is avoided.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural diagram of a lithium battery cooling assembly according to the present invention;

FIG. 2 is a schematic view of the housing construction of the present invention;

FIG. 3 is a schematic view of the semiconductor chilling plate structure of the present invention;

FIG. 4 is a schematic view of the end cap construction of the present invention;

FIG. 5 is a schematic view of the construction of the suction fan of the present invention;

in the figure: 1-a housing; 11-an electrical connection port; 12-a mounting cavity; 13-a circuit board; 14-heat dissipation holes; 15-clamping plate; 16-a hold-down bolt; 2-semiconductor refrigerating sheet; 21-a connector; 22-a wire; 3-end cover; 31-inserting a ring; 32-inserting plates; 33-fixing the plate; 34-a suction hole; 35-connecting grooves; 4-an air extraction fan; 41-a motor; 42-connecting rod; 43-impeller; 44-perforation.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

The embodiment is as follows: referring to fig. 1 and 2: a high-temperature protection structure of a lithium battery comprises a shell 1, wherein heat dissipation holes 14 are formed in the rear end of the shell 1, semiconductor refrigeration sheets 2 are arranged on the inner side of the shell 1, close to the heat dissipation holes 14, heat absorption surfaces of the semiconductor refrigeration sheets 2 face the inner side of the shell 1, heat dissipation surfaces of the semiconductor refrigeration sheets 2 face the heat dissipation holes 14, an end cover 3 is arranged at the top end of the shell 1, a fixing plate 33 is arranged at the rear end of the end cover 3, aligned with the heat dissipation holes 14, and an air suction fan 4 is arranged on the fixing plate 33; the shell 1 is convenient for bearing the lithium battery, the lithium battery is convenient to install and fix, meanwhile, the structure is also convenient for matching with each component to cool and process the lithium battery, the heat dissipation holes 14 are convenient for quickly discharging heat generated by the lithium battery, the semiconductor refrigeration piece 2 is convenient for quickly absorbing heat generated by the lithium battery, and the absorbed heat is discharged from the heat dissipation holes 14, so that the aim of quickly cooling the lithium battery is fulfilled, the end cover 3 is convenient for sealing the top end of the shell 1, the lithium battery can be effectively protected by the whole device, the fixing plate 33 is convenient for installing the air exhaust fan 4, and the air exhaust fan 4 is convenient for cooling and processing the lithium battery; this kind of structure makes lithium battery case 1 can dispel the heat to the lithium cell through that semiconductor refrigeration piece 2 cooperation heat dissipation fan is quick, avoids the lithium cell high temperature and damages, and the heat sink cooling efficiency of this kind of structure is fast simultaneously, can be fast effectual with the lithium cell cooling, avoids appearing being difficult to carrying out the problem of quick cooling to it when the lithium cell high temperature.

Referring to FIG. 2: the front end of the shell 1 is provided with an electric interface 11, the inner side of the shell 1 close to the front end is provided with a mounting cavity 12, and the inner side of the mounting cavity 12 is provided with a circuit board 13; the power connection port 11 is convenient to be matched with the lead 22, so that the shell 1 can be conveniently connected with power, the electric quantity of the lithium battery can be conveniently transmitted out, the circuit board 13 can be conveniently installed in the installation cavity 12, the circuit board 13 can be conveniently and stably used, the electric quantity of the whole lithium battery can be conveniently controlled by the circuit board 13, and the lithium battery can be conveniently used; a plurality of compression bolts 16 are arranged at the positions, close to the top end, of the two sides of the shell 1, and two pairs of clamping plates 15 are symmetrically arranged at the positions, close to the heat dissipation holes 14, of the two sides of the inner side of the shell 1; the hold-down bolt 16 is convenient for fixed end cover 3, makes things convenient for the installation and the use of end cover 3, and cardboard 15 is convenient for block semiconductor refrigeration piece 2, and the semiconductor refrigeration piece 2's of being convenient for installation and dismantlement make things convenient for semiconductor refrigeration piece 2's nimble use.

Referring to FIG. 3: the top of the front end face of the semiconductor refrigerating sheet 2 is provided with a connector 21, and a lead 22 is arranged on the connector 21; connector 21 and wire 22 are convenient for mutually support to make things convenient for wire 22 and lithium cell to be connected, thereby conveniently carry out the circular telegram to semiconductor refrigeration piece 2, be convenient for semiconductor refrigeration piece 2's normal heat dissipation.

Referring to FIG. 4: an inserting plate 32 is arranged at the position, aligned with the installation cavity 12, of the bottom end of the end cover 3, an inserting ring 31 is arranged on the bottom surface of the end cover 3, two air extraction holes 34 are symmetrically formed in the fixing plate 33, and a plurality of connecting grooves 35 are formed in the periphery of the air extraction holes 34; the picture peg 32 is convenient for insert the installation cavity 12, and insert the circle 31 and be convenient for insert the shell 1 inboard to make things convenient for end cover 3 to cooperate the stable installation on shell 1 top of shell 1, the extraction opening is convenient for install and is bled 4, thereby conveniently bleed 4 and cooperate louvre 14 to carry out complementary heat dissipation, spread groove 35 is convenient for cooperate the bolt, thereby conveniently links together end cover 3 and shell 1 through the bolt.

Referring to FIG. 5: the inner side of the air extracting fan 4 is provided with a motor 41, the motor 41 and the air extracting fan 4 are connected together through a connecting rod 42, the output end of the motor 41 is provided with an impeller 43, and four corners of the air extracting fan 4 are provided with through holes 44; the motor 41 is convenient for drive the impeller 43 to rotate, the impeller 43 is convenient for drive the air flow, so that the purpose of heat dissipation is achieved, the connecting rod 42 is convenient for fixing the motor 41, the motor 41 is convenient to operate, the through hole 44 is convenient for the bolt to pass through, and therefore the air exhaust fan 4 is convenient to be fixed on the fixing plate 33 through the bolt.

The using method comprises the following steps: during the use, install the lithium cell inside shell 1 to link together semiconductor refrigeration piece 2 and lithium cell with circuit board 13, then cover the apron and screw up housing 1 top and hold-down bolt 16, then install and bleed 4, later in the heat that lithium cell operation in-process semiconductor refrigeration piece 2 can produce the lithium cell absorb, and with the heat that absorbs from louvre 14 effluvium, and the heat can accelerate under the operation of bleeding 4 and effluvium, thereby can be quick dispel the heat to the lithium cell.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a lithium cell high temperature protection structure which characterized in that: including shell (1), shell (1) rear end is equipped with louvre (14), the position that shell (1) inboard is close to louvre (14) is equipped with semiconductor refrigeration piece (2), the heat absorption surface of semiconductor refrigeration piece (2) is inboard towards shell (1), the cooling surface of semiconductor refrigeration piece (2) is towards louvre (14), shell (1) top is equipped with end cover (3), end cover (3) rear end is equipped with fixed plate (33) in alignment louvre (14), be equipped with extraction fan (4) on fixed plate (33).

2. The lithium battery high-temperature protection structure according to claim 1, wherein the front end of the housing (1) is provided with an electric connection port (11), a mounting cavity (12) is arranged inside the housing (1) near the front end, and a circuit board (13) is arranged inside the mounting cavity (12).

3. The lithium battery high-temperature protection structure according to claim 2, wherein a plurality of compression bolts (16) are arranged at positions on two sides of the housing (1) near the top end, and two pairs of clamping plates (15) are symmetrically arranged at positions on two sides of the inner side of the housing (1) near the heat dissipation holes (14).

4. The lithium battery high-temperature protection structure according to claim 3, wherein a connector (21) is arranged on the top of the front end face of the semiconductor refrigeration sheet (2), and a wire (22) is arranged on the connector (21).

5. The lithium battery high-temperature protection structure according to claim 4, wherein an insertion plate (32) is arranged at a position where the bottom end of the end cover (3) is aligned with the installation cavity (12), an insertion ring (31) is arranged at the bottom surface of the end cover (3), two air extraction holes (34) are symmetrically arranged on the fixing plate (33), and a plurality of connecting grooves (35) are arranged around the air extraction holes (34).

6. The lithium battery high-temperature protection structure according to claim 5, wherein a motor (41) is arranged inside the air exhaust fan (4), the motor (41) and the air exhaust fan (4) are connected together through a connecting rod (42), an impeller (43) is arranged at an output end of the motor (41), and through holes (44) are formed at four corners of the air exhaust fan (4).