CN210668614U

CN210668614U - Lithium battery pack with heat dissipation and dust removal structure

Info

Publication number: CN210668614U
Application number: CN201921412135.3U
Authority: CN
Inventors: 张颖建; 孙永
Original assignee: Shenzhen No7 Network Technology Co Ltd
Current assignee: Shenzhen No7 Network Technology Co Ltd
Priority date: 2019-08-28
Filing date: 2019-08-28
Publication date: 2020-06-02
Anticipated expiration: 2029-08-28

Abstract

The utility model belongs to the technical field of lithium cell group, a lithium cell group with heat dissipation and dust removal structure is provided, including shell, battery module and intake pipe, intake pipe one end is sealed, and a plurality of inlet ports have been seted up to the other end and adsorption chamber intercommunication, pipe shaft equidistant. The inner wall of the adsorption chamber is fixed with a dust absorption film. The micro fan is fixed on the inner wall of the shell, the air inlet side is communicated with the air outlet pipe, and the air outlet pipe is communicated with the adsorption chamber. The utility model discloses a rotation of micro-fan makes the circulation of air in the lithium cell group cool down to and form the air that the negative pressure made the lithium cell group in to giving vent to anger and enter into the adsorption chamber from the inlet port, thereby the dust in the convection current friction dust absorption membrane adsorbed air of air has effectively reduced inside dust content, has reached and has had the effect to lithium cell cooling and go dirt simultaneously.

Description

Lithium battery pack with heat dissipation and dust removal structure

[ technical field ] A method for producing a semiconductor device

The utility model relates to a lithium cell group technical field especially relates to a lithium cell group with heat dissipation and dust removal structure.

[ background of the invention ]

At present, lithium battery packs are widely applied to various industries due to various excellent performances such as portability and the like, and have good effects. However, the lithium battery itself has a great safety risk when the temperature is too high, based on the limitation of the discharge principle and process. In addition, because lithium cell group is not complete sealed, accumulate for a long time, inside can accumulate more dust, when circuit board or lithium-ion battery pole piece laying dust is more, takes place the short circuit easily, causes the loss. Therefore, it is required to develop a structure having both heat dissipation and dust removal functions and occupying a small volume to solve the technical problems of over-temperature and possible short circuit caused by dust accumulation of the lithium battery pack.

[ Utility model ] content

The utility model aims at providing a lithium cell group with heat dissipation and dust removal structure solves current lithium cell group high temperature and laying dust probably leads to the technical problem of short circuit.

In order to achieve the above object, the utility model provides a lithium cell group with heat dissipation and dust removal structure, including shell and battery module, still include: the air inlet pipe is fixed between the battery module and the shell, one end of the air inlet pipe is closed, the other end of the air inlet pipe is communicated with the adsorption chamber, and a plurality of air inlet holes are formed in the pipe body at equal intervals; a dust absorption film is fixed on the inner wall of the adsorption chamber; and the micro fan is fixed on the inner wall of the shell, the air inlet side is communicated with the air outlet pipe, and the air outlet pipe is communicated with the adsorption chamber.

In a preferred embodiment, an air inlet valve is arranged at the position where the air inlet pipe is communicated with the adsorption chamber.

In a preferred embodiment, an air outlet valve is arranged at the position where the adsorption chamber is communicated with the air outlet pipe.

In a preferred embodiment, the number of the air inlet pipes is two, and the two air inlet pipes are respectively fixed at the top and the bottom of the battery module.

In a preferred embodiment, the number of the micro fans is at least two, and the micro fans are respectively communicated with the adsorption chamber through the air outlet pipe.

In a preferred embodiment, the adsorption chamber is detachably fixed on the inner wall of the shell.

In a preferred embodiment, a moisture absorption film is further fixed on the inner wall of the adsorption chamber.

In a preferred embodiment, the dust-absorbing film is a polymer film.

The utility model discloses a rotation of micro-fan makes the circulation of air in the lithium cell group cool down to and form the air that the negative pressure made the lithium cell group in to giving vent to anger and enter into the adsorption chamber from the inlet port, thereby the dust in the convection current friction dust absorption membrane adsorbed air of air has effectively reduced inside dust content, has reached and has had the effect to lithium cell cooling and go dirt simultaneously.

[ description of the 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 view of a top-view cross-sectional structure of a lithium battery pack according to an embodiment of the present invention.

[ detailed description ] embodiments

In order to make the objects, technical solutions and advantageous technical effects of the present invention more clearly apparent, the embodiments of the present invention will be described in detail and completely with reference to the accompanying drawings of the embodiments of the present invention, and obviously, 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 all belong to the protection scope of the present invention.

In order to solve the technical problem that current lithium cell group high temperature and laying dust probably lead to the short circuit, see fig. 1, the utility model provides a lithium cell group with heat dissipation and dust removal structure, including shell 1 and battery module 100, still include intake pipe 2, be fixed in between battery module 100 and the shell 1, one end is sealed, and the other end communicates with adsorption chamber 3, and a plurality of inlet ports 20 have been seted up to pipe shaft equidistant. A dust absorption film 30 is fixed on the inner wall of the absorption chamber 3. And the micro fan 4 is fixed on the inner wall of the shell 1, the air inlet side is communicated with the air outlet pipe 5, and the air outlet pipe 5 is communicated with the adsorption chamber 3.

In general, the material of the intake duct 2 is preferably hard but has a certain elasticity, and can be preferably mounted between the battery module 100 and the case 1 without affecting the intake. One end of the air inlet pipe 2 is closed, so that air can only enter the adsorption chamber 3 through the air inlet hole 20, then enter the air outlet pipe 5 and then flow to the battery module 100 driven by the rotation of the micro-fan 4, and an air flow loop is formed inside the whole battery. When the micro fan 4 rotates, gas is fed towards the lithium battery, and the gas flows among the lithium single batteries, so that the temperature is reduced; in addition, because the air inlet side of the micro-fan 4 is communicated with the air outlet pipe 5, it should be noted that the communication between the air inlet side and the air outlet pipe 5 is closed, and the gas sent by the micro-fan 4 can only flow in through the air outlet pipe 5. When micro-fan 4 supplies air, negative pressure has been formed to outlet duct 5, make the air flow to outlet duct 5 from adsorption chamber 3, and then lead to the atmospheric pressure of adsorption chamber 3 to reduce, make the air enter into in the intake pipe 2 from the inlet port 20 and continue to flow to adsorption chamber 3, at the in-process that flows, the air rubs and contacts with dust absorption membrane 30 in the adsorption chamber 3, dust in the air is firstly attracted by the static that the friction produced and adsorbs, secondly directly is directly adsorbed by the micropore in the dust absorption membrane 30, the effect of going dirt has been reached, the risk that circuit board and pole piece lead to the short circuit because the laying dust has been reduced.

The utility model discloses in, the rotation through micro fan 4 has reached the effect of cooling down and going dirt to the air to battery module 100 simultaneously, and simple structure is lower simultaneously, the cost.

Further, referring to fig. 1, an air inlet valve 6 is provided at a position where the air inlet pipe 2 communicates with the adsorption chamber 3.

Wherein, through admission valve 6, the air can only be followed intake pipe 2 and to adsorption chamber 3 unidirectional flow, has enlarged the scope of the inside air current return circuit of whole battery, and dust removal effect is better.

Further, referring to fig. 1, an air outlet valve 7 is provided at a position where the adsorption chamber 3 communicates with the air outlet pipe 5. Through the air outlet valve 7, when the air outlet pipe 5 forms negative pressure on the adsorption chamber 3, air can only flow from the adsorption chamber 3 to the air outlet pipe 5 in a single direction, and the effect that the negative pressure difference drives the air to flow is better. In addition, the air outlet valve 7 and the air inlet valve 6 are arranged simultaneously, so that all air can enter the adsorption chamber 3 as far as possible, and the dust collection effect is enhanced.

Further, the number of the air inlet pipes 2 is two, and the air inlet pipes are respectively fixed to the top and the bottom of the battery module 100. Usually many cases, both sides are top and bottom about battery module 100, all are equipped with the circuit board, consequently, are equipped with two intake pipe 2 of even more quantity, make the inside a plurality of less air current return circuits that form of lithium cell group, have accelerated gaseous flow, and the cooling is better with the effect of removing dust. It should be noted that, in both the present technical solution and the core technical solution described above, the temperature can be lowered by bringing the heat-carrying airflow into contact with the housing more quickly to perform heat conduction and heat dissipation.

Further, referring to fig. 1, the number of the micro fans 4 is at least two, and the micro fans are respectively communicated with the adsorption chamber 3 through the air outlet pipe 5.

It should be noted that the number of the air outlet pipes 5 is the same as that of the micro fans 4, the air inlet side of each micro fan 4 is communicated with the adsorption chamber 3 through the respective air outlet pipe 5, and the plurality of micro fans 4 can provide stronger driving force to make air flow. In addition, generally, the power source of the micro-fan 4 comes from the battery module 100.

In particular, the adsorption chamber 3 is detachably fixed to the inner wall of the housing 1.

When the dust absorption film 30 reaches or approaches the upper limit of absorption, the absorption chamber 3 or the dust absorption film 30 can be detached for replacement, and the operation is simple and convenient.

Furthermore, a moisture absorption film (not shown) is fixed on the inner wall of the adsorption chamber 3.

It should be noted that the air contains dust which can harm the circuit board or the pole piece, and water vapor in the air can condense on the circuit board when the temperature of the lithium battery pack is reduced, so that direct short circuit can be caused, and harm is brought. Therefore, similar to the principle of dust collection, the moisture absorption film (not shown) can absorb water vapor in the air inside the battery as much as possible, and the risk of short circuit of the circuit is reduced.

In particular, the dust suction film 30 is a polymer film. Based on the characteristics of the polymer film, the dust in the air can be adsorbed more strongly, more rapidly and more.

The utility model discloses a rotation of micro-fan 4 makes the circulation of air in the lithium cell group cool down to and 5 formation negative pressures of outlet duct make the air in the lithium cell group enter into adsorption chamber 3 from inlet port 20, thereby the dust in the convection current friction dust absorption membrane 30 adsorbed air of air has effectively reduced inside dust content, has reached and has had the effect of cooling down and go dirt to the lithium cell simultaneously.

The invention is not limited solely to that described in the specification and the embodiments, and additional advantages and modifications will readily occur to those skilled in the art, and it is not intended to be limited to the specific details, representative apparatus, and illustrative examples shown and described herein, without departing from the spirit and scope of the general concept as defined by the appended claims and their equivalents.

Claims

1. The utility model provides a lithium cell group with heat dissipation and dust removal structure, includes shell and battery module, its characterized in that still includes:

the air inlet pipe is fixed between the battery module and the shell, one end of the air inlet pipe is closed, the other end of the air inlet pipe is communicated with the adsorption chamber, and a plurality of air inlet holes are formed in the pipe body at equal intervals; a dust absorption film is fixed on the inner wall of the adsorption chamber;

and the micro fan is fixed on the inner wall of the shell, the air inlet side is communicated with the air outlet pipe, and the air outlet pipe is communicated with the adsorption chamber.

2. The lithium battery pack with a heat dissipation and dust removal structure as claimed in claim 1, wherein an air inlet valve is disposed at a position where the air inlet pipe communicates with the adsorption chamber.

3. The lithium battery pack with the heat dissipation and dust removal structure as claimed in any one of claims 1-2, wherein a gas outlet valve is disposed at a position where the adsorption chamber is communicated with the gas outlet pipe.

4. The lithium battery pack with the heat dissipation and dust removal structure as claimed in claim 1, wherein the number of the air inlet pipes is two, and the two air inlet pipes are respectively fixed at the top and the bottom of the battery module.

5. The lithium battery pack with the heat dissipation and dust removal structure as claimed in claim 1, wherein the number of the micro fans is at least two, and the micro fans are respectively communicated with the adsorption chambers through the air outlet pipes.

6. The lithium battery pack with the heat dissipation and dust removal structure as claimed in claim 1, wherein the adsorption chamber is detachably fixed to an inner wall of the case.

7. The lithium battery pack with a heat dissipation and dust removal structure as claimed in claim 1, wherein a moisture absorption film is further fixed on an inner wall of the adsorption chamber.

8. The lithium battery pack with a heat dissipation and dust removal structure as claimed in claim 1, wherein the dust-absorbing film is a polymer film.