CN219592927U - Dust-proof heat dissipation structure of lithium battery protection board - Google Patents

Abstract

The utility model relates to the technical field of heat dissipation of lithium batteries, and discloses a dust-proof heat dissipation structure of a lithium battery protection plate, which comprises the following components: the lithium battery protection board and heat conduction silica gel piece, the both sides of lithium battery protection board are equipped with heat conduction silica gel piece, the heat conduction silica gel piece outside is equipped with the thin pipe, thin pipe one end is equipped with the shell that intakes, and the other end is equipped with the shell that goes out, the thin pipe outside is equipped with the heat dissipation shell, the inside heat dissipation shell is filled with heat conduction gel, the utility model is through the insulating soft characteristic of heat conduction silica gel piece, the gap that exists between the heat source on the lithium battery protection board and the heat dissipation shell is filled, avoid having a large amount of air in the space, efficiency can reduce when leading to heat transfer, and heat conduction material is filled between the two, the hole of big or small is filled and is accomplished, reduce contact thermal resistance, make heat source and heat dissipation shell can close contact, thereby improve the radiating effect.

Description

Dust-proof heat dissipation structure of lithium battery protection board

Technical Field

The utility model relates to the technical field of heat dissipation of lithium batteries, in particular to a dust-proof heat dissipation structure of a lithium battery protection plate.

Background

The finished lithium battery mainly comprises two parts, namely a lithium battery core and a protective plate. The lithium battery protection board is a circuit board for protecting charge and discharge 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), so that the single batteries of the battery pack are uniformly charged, and the charging effect in a serial charging mode is effectively improved; meanwhile, the overvoltage, undervoltage, overcurrent, short circuit and overtemperature states of all single batteries in the battery pack are detected, and the service life of the batteries is protected and prolonged; the undervoltage protection prevents each single cell from being damaged by overdischarge when the single cell is discharged for use.

The publication number is: CN213094726U, a chinese patent of the utility model, discloses a dust-proof heat-dissipating structure of lithium battery protection board, comprising a placing bin, a fan and a heat-dissipating shell are arranged at the left side of the placing bin, the placing bin is provided with a heat-dissipating hole, and a folding board control device is arranged in front of the placing bin; the beneficial effects are as follows: the fan and the heat dissipation shell are arranged, so that heat of the lithium battery protection board is taken away from the heat dissipation shell by the fan, the heat of the lithium battery protection board is reduced, meanwhile, dust is isolated from entering the placement bin by the heat dissipation shell, and the effect of reducing damage of the lithium battery protection board by the dust is achieved; through having set up folding board controlling means for the quantity of louvre can be controlled on the control placed the storehouse, can be according to the how much of actual conditions control louvre, when not needing the heat dissipation simultaneously, can also totally seal the louvre, and isolated dust gets into and places the storehouse.

According to the analysis of the prior art, heat can be generated by the lithium battery protection plate in the working process due to current and voltage, if the heat is not dissipated for a long time, the lithium battery protection plate can be damaged, the service life of the lithium battery protection plate is affected, meanwhile, dust can be adsorbed by the lithium battery protection plate due to static electricity and the like, and the service life of the lithium battery protection plate is affected.

Disclosure of Invention

The utility model aims to provide a dust-resistant heat-radiating structure of a lithium battery protection board, which is used for solving the problems that the existing lithium battery protection board proposed in the background technology is difficult to radiate and is easy to adsorb dust.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a dust-blocking heat-dissipating structure of a lithium battery protection plate, comprising: lithium battery protection shield and heat conduction silica gel piece, lithium battery protection shield both sides are equipped with the heat conduction silica gel piece, the heat conduction silica gel piece outside is equipped with thin pipe, thin pipe one end is equipped with the shell that intakes, and the other end is equipped with out the shell, the thin pipe outside is equipped with the heat dissipation shell, the inside packing of heat dissipation shell has the heat conduction gel, heat dissipation shell one end is equipped with the back shrouding.

Further, a water inlet valve is arranged at one end of the water inlet shell, a water outlet valve is arranged at one end of the water outlet shell, the water inlet shell is communicated with the thin pipe, and the water outlet shell is communicated with the thin pipe.

Further, the inside of the water inlet shell, the water outlet shell and the thin tube is filled with cooling liquid.

Further, the inside connector that is equipped with of back shrouding and lithium cell protection shield electric connection.

Furthermore, the thin tube is U-shaped, and the connection part of the outer wall of the thin tube and the heat-conducting silica gel cloth is provided with heat-conducting silica gel.

Furthermore, the thin tube is made of copper tube material, and the heat dissipation shell is made of aluminum alloy material.

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

according to the utility model, through the arranged lithium battery protection board, the heat conducting silica gel sheet and the heat conducting silica gel sheet, when the dust-resistant heat-dissipating structure of the lithium battery protection board is used, gaps exist between a heat source and a heat-dissipating shell on the lithium battery protection board and are filled with a large amount of air, so that efficiency can be reduced when heat is transferred, a heat conducting material is filled between the heat source and the heat-dissipating shell, the small pits are filled, contact thermal resistance is reduced, the heat source and the heat-dissipating shell can be tightly contacted, so that the heat-dissipating effect is improved, a part of heat generated by the lithium battery protection circuit board is transferred into a thin pipe of metal through the heat conducting silica gel sheet and the heat conducting silica gel sheet, heat is exchanged through cooling liquid in the thin pipe, when the temperature is not high, more heat can be absorbed under the same volume through the high specific heat capacity of the cooling liquid, then the heat is dissipated to the outside through the heat conducting gel and the heat-dissipating shell, when the temperature is high, the heat is connected with a circulating water pump and a circulating water tank through a water inlet valve, the circulating water pump and the circulating water tank, the cooling liquid is circulated, the cooling liquid is constantly, the cooling liquid in the circulating water tank is replaced, the cooling liquid in the circulating water tank is constantly, the cooling liquid in the circulating water tank is kept for a stable running time, and the lithium battery is kept at a stable temperature, and the lithium battery can run for a long time, and the heat dissipation time is ensured.

Drawings

FIG. 1 is a schematic diagram of the internal structure of a dust-proof heat-dissipating structure of a lithium battery protection plate according to the present utility model;

FIG. 2 is a perspective view of a dust-proof heat-dissipating structure of a lithium battery protection plate according to the present utility model;

FIG. 3 is a front cross-sectional view of a dust-blocking and heat-dissipating structure of a lithium battery protection plate according to the present utility model;

fig. 4 is a front view of a dust-proof heat dissipation structure of a lithium battery protection plate according to the present utility model.

In the figure: 1-a lithium battery protection plate; 2-a heat-conducting silica gel sheet; 3-a heat conduction silicon adhesive tape; 4-thin tube; 5-a thermally conductive gel; 6-a heat dissipation shell; 7-a rear sealing plate; 8-a water inlet shell; 9-water outlet shell; 10-a water inlet valve; 11-water outlet valve.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1-4, the present utility model provides a technical solution: a dust-blocking heat-dissipating structure of a lithium battery protection plate, comprising: lithium cell protection shield 1 and heat conduction silica gel piece 2, lithium cell protection shield 1 both sides are equipped with heat conduction silica gel piece 2, and the heat conduction silica gel piece 2 outside is equipped with heat conduction silica gel piece 3, and the heat conduction silica gel piece 3 outside is equipped with thin pipe 4, and thin pipe 4 one end is equipped with water inlet shell 8, and the other end is equipped with water outlet shell 9, and thin pipe 4 outside is equipped with heat dissipation shell 6, and heat dissipation shell 6 inside is filled with heat conduction gel 5, and heat dissipation shell 6 one end is equipped with back shrouding 7. The heat source on the lithium battery protection board 1 and the heat dissipation shell 6 are filled through the insulating soft characteristic of the heat conduction silica gel sheet 2, a large amount of air is prevented from being in the gap, so that efficiency is reduced when heat is transferred, the heat conduction material is filled between the heat source and the heat dissipation shell 6, the pit with the size is filled, the contact thermal resistance is reduced, the heat source and the heat dissipation shell 6 can be in close contact, the heat dissipation effect is improved, a part of heat generated by the lithium battery protection circuit board is transferred into the metal thin tube 4 through the heat conduction silica gel sheet 2 and the heat conduction silica gel sheet 3, and heat exchange is performed through cooling liquid in the thin tube 4.

One end of the water inlet shell 8 is provided with a water inlet valve 10, one end of the water outlet shell 9 is provided with a water outlet valve 11, the water inlet shell 8 is communicated with the thin pipe 4, and the water outlet shell 9 is communicated with the thin pipe 4. The rear sealing plate 7 is internally provided with a connector electrically connected with the lithium battery protection plate 1, so that the lithium battery protection plate 1 and the lithium battery are electrically connected.

The inside of the water inlet shell 8, the water outlet shell 9 and the thin tube 4 is filled with cooling liquid. The thin tube 4 is U-shaped, and the connection part of the outer wall of the thin tube 4 and the heat conduction silicone adhesive tape 3 is provided with heat conduction silicone grease. The water inlet shell 8 and the water outlet shell 9 are connected through the thin pipe 4, so that the circulation of cooling liquid is facilitated. When the temperature is not high, more heat can be absorbed under the same volume through the high specific heat capacity of the cooling liquid, then the heat is dissipated to the outside through the heat conduction gel 5 and the heat dissipation shell 6, when the temperature is high, the circulating water pump and the circulating water tank are connected through the water inlet valve 10 and the water outlet valve 11, the cooling liquid is cooled in a circulating mode through the circulating water pump and the circulating water tank, and the cooling liquid in the circulating water tank is continuously replaced, so that the cooling liquid always keeps a certain temperature, and continuous heat dissipation of the lithium battery protection plate 1 is facilitated.

The thin tube 4 is made of copper tube material, and the heat dissipation shell 6 is made of aluminum alloy material. The heat is conveniently emitted to the outside air, and the sealed dust-proof heat dissipation is realized.

Working principle: when the dust-resistant heat-dissipating structure of the lithium battery protection board is used, gaps exist between a heat source and a heat-dissipating shell 6 on the lithium battery protection board 1 through the characteristics of insulation softness of the heat-conducting silica gel sheet 2, a large amount of air is prevented from being in the gaps, efficiency is reduced when heat is transmitted, heat-conducting materials are filled between the heat source and the heat-dissipating shell 6, pits with different sizes are completely filled, contact thermal resistance is reduced, the heat source and the heat-dissipating shell 6 can be closely contacted, therefore, the heat-dissipating effect is improved, a part of heat generated by the lithium battery protection circuit board is transmitted into a metal thin tube 4 through the heat-conducting silica gel sheet 2 and the heat-conducting silica gel sheet 3, heat exchange is carried out through cooling liquid in the thin tube 4, more heat can be absorbed under the same volume through the high specific heat capacity of the cooling liquid when the temperature is not high, then the heat is dissipated to the outside through the heat-conducting gel 5 and the heat-dissipating shell 6, when the temperature is high, the cooling liquid is connected with a circulating water pump and a circulating water tank through the circulating water pump and the circulating water tank through the circulating water valve 10, the cooling liquid is cooled in a circulating water way, the cooling liquid is constantly replaced by the cooling liquid in the circulating water tank, the cooling liquid in the circulating water tank constantly, the cooling liquid is kept at a certain temperature, the lithium battery protection board can be conveniently cooled, the heat-dissipating heat of the lithium battery protection board is stable, and the lithium battery can run for a stable heat-dissipating the lithium battery is stable, and stable in the heat-dissipating the lithium battery can last, and long time, and the heat can be cooled.

All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Claims (6)

1. A dust-blocking heat-dissipating structure of a lithium battery protection plate, comprising: lithium cell protection shield (1) and heat conduction silica gel piece (2), its characterized in that: lithium cell protection shield (1) both sides are equipped with heat conduction silica gel piece (2), heat conduction silica gel piece (2) outside is equipped with heat conduction silica gel piece (3), heat conduction silica gel piece (3) outside is equipped with thin pipe (4), thin pipe (4) one end is equipped with into water shell (8), and the other end is equipped with out water shell (9), thin pipe (4) outside is equipped with heat dissipation shell (6), heat dissipation shell (6) inside packing has heat conduction gel (5), heat dissipation shell (6) one end is equipped with back shrouding (7).

2. The dust-resistant heat-dissipating structure of a lithium battery protection plate according to claim 1, wherein: one end of the water inlet shell (8) is provided with a water inlet valve (10), one end of the water outlet shell (9) is provided with a water outlet valve (11), the water inlet shell (8) is communicated with the thin pipe (4), and the water outlet shell (9) is communicated with the thin pipe (4).

3. The dust-resistant heat-dissipating structure of a lithium battery protection plate according to claim 2, wherein: the inside of the water inlet shell (8), the water outlet shell (9) and the thin tube (4) is filled with cooling liquid.

4. The dust-resistant heat-dissipating structure of a lithium battery protection plate according to claim 1, wherein: the rear sealing plate (7) is internally provided with a connector which is electrically connected with the lithium battery protection plate (1).

5. The dust-resistant heat-dissipating structure of a lithium battery protection plate according to claim 1, wherein: the thin tube (4) is U-shaped, and a heat conduction silicone grease is arranged at the connection part of the outer wall of the thin tube (4) and the heat conduction silicone adhesive tape (3).

6. The dust-resistant heat-dissipating structure of a lithium battery protection plate according to claim 1, wherein: the thin tube (4) is made of copper tube, and the heat dissipation shell (6) is made of aluminum alloy.