阅读说明：本技术 电池包通气干燥过滤系统 (Battery pack ventilation drying and filtering system ) 是由 王莉 于 2019-10-05 设计创作，主要内容包括：一种干燥过滤技术领域的电池包通气干燥过滤系统,包括电池包、泄压安全阀、进出气管路、干燥过滤器、单向出气阀门、出气管路、进气管路、单向进气阀门、空滤,进出气管路的一个端口、出气管路的一个端口、进气管路的一个端口均与干燥过滤器相连通,进出气管路的另一个端口与泄压安全阀连通在一起,单向出气阀门布置在出气管路上,单向进气阀门布置在所述进气管路上,空滤与进气管路的另一个端口相连通。本发明设计合理,结构简单,干燥过滤器通过放置干燥剂或其他方式,保证气体干燥过滤后排出,排出的气体会经过一定程度的净化；同时,保证进入电池包的气体是干燥和干净的,避免对电池包泄压安全阀和电池包进行污染。(A battery pack ventilation drying and filtering system belongs to the technical field of drying and filtering and comprises a battery pack, a pressure relief safety valve, an air inlet and outlet pipeline, a drying filter, a one-way air outlet valve, an air outlet pipeline, an air inlet pipeline, a one-way air inlet valve and an air filter, wherein one port of the air inlet and outlet pipeline, one port of the air outlet pipeline and one port of the air inlet pipeline are communicated with the drying filter, the other port of the air inlet and outlet pipeline is communicated with the pressure relief safety valve, the one-way air outlet valve is arranged on the air outlet pipeline, the one-way air inlet valve is arranged on the air inlet pipeline, and the air filter is communicated with the other port. The invention has reasonable design and simple structure, the drying filter ensures that the gas is discharged after being dried and filtered by placing the drying agent or other modes, and the discharged gas can be purified to a certain degree; meanwhile, the gas entering the battery pack is dry and clean, and the battery pack pressure relief safety valve and the battery pack are prevented from being polluted.)

1. A battery pack ventilation drying and filtering system comprises a battery pack and a pressure relief safety valve, wherein the pressure relief safety valve is arranged on the battery pack;

one port of the air inlet pipeline, one port of the air outlet pipeline and one port of the air inlet pipeline are communicated with the dry filter;

the other port of the gas inlet and outlet pipeline is communicated with the pressure relief safety valve;

the one-way air outlet valve is arranged on the air outlet pipeline, and the one-way air inlet valve is arranged on the air inlet pipeline;

the air filter is communicated with the other port of the air inlet pipeline.

2. The battery pack vent, filter-drier system of claim 1 wherein the port of the outlet line that communicates with the filter-drier is moved into communication with the inlet and outlet lines.

3. The battery pack ventilation, drying and filtration system of claim 1, wherein the battery pack is a power battery pack used on an electric automobile or a battery pack used on an electric motorcycle or an electric bicycle.

4. The battery pack vent, dry and filter system of claim 1, wherein the pressure relief valve is a valve through which air or water vapor freely passes under pressure.

5. The battery pack vent, dry filter system of claim 1, wherein the filter-drier is made of plastic or metal and has a desiccant disposed therein.

6. The battery pack vent, dry and filter system of claim 1, wherein the air filter is made of plastic or metal and has a filter sponge disposed therein.

Technical Field

The invention relates to a filtering system in the technical field of drying and filtering, in particular to a battery pack ventilating, drying and filtering system controlled by a one-way valve for a vehicle.

Background

The battery pack is a core component of electric automobiles, motorcycles and electric bicycles. But in current technique, the battery package is through pressure release relief valve and atmospheric environment directly exchange gas, other in the battery package can directly arrange to atmospheric environment through the relief valve, and gas is not crossing dry filtration, the disposable discharge of gas that probably is poisonous in the package can bring unhealthy influence and influence the pollution of environment to the human body, package outer gas gets into the battery package when inside through the pressure release relief valve, unclean air in the environment and humid air can directly get into inside the battery package, cause each part function decline of battery package or function loss even.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a battery pack ventilation drying and filtering system which can effectively reduce pollutant discharge and improve the safety of the battery pack.

The invention is realized by the following technical scheme that the invention comprises a battery pack, a pressure relief safety valve, an air inlet and outlet pipeline, a drying filter, a one-way air outlet valve, an air outlet pipeline, an air inlet pipeline, a one-way air inlet valve and an air filter, wherein the pressure relief safety valve is arranged on the battery pack; one port of the air inlet pipeline, one port of the air outlet pipeline and one port of the air inlet pipeline are communicated with the dry filter; the other port of the air inlet and outlet pipeline is communicated with a pressure relief safety valve; the one-way air outlet valve is arranged on the air outlet pipeline, and the one-way air inlet valve is arranged on the air inlet pipeline; the air filter is communicated with the other port of the air inlet pipeline.

Further, in the present invention, the port of the air outlet line communicating with the filter-drier is moved to communicate with the air inlet and outlet lines.

Further, in the present invention, the battery pack is a power battery pack used in an electric vehicle, or a battery pack used in an electric motorcycle or an electric bicycle.

Further, in the present invention, the pressure relief safety valve is a valve through which air or water vapor freely passes under a certain pressure.

Further, in the present invention, the filter-drier is made of plastic or metal, and a drying agent is placed inside.

Further, in the present invention, the air filter is made of plastic or metal, and a filter sponge is placed inside.

The invention relates to the technical field of a battery pack ventilation drying and filtering system, and in certain conditions, when the internal pressure of a battery pack is greater than the ambient pressure, a pressure relief safety valve can timely discharge gas in the battery pack to the ambient atmosphere outside the battery pack, so that the risk of battery pack bulging, damage and even explosion caused by too fast increase of the internal pressure of the battery pack is reduced or avoided. According to the functional requirements of the system, the drying filter can filter the gas exhausted from the battery pack, and the gas exhausted from the battery pack has acidic gas or other toxic substances, so that the surrounding environment can be polluted and the influence on the health of a human body can be caused.

Under certain conditions, the internal pressure of battery package can be less than atmospheric environment pressure, inside air in the environment can enter into battery package through the pressure release relief valve, avoid the battery package when pressure drop, pressure drop is too fast, lead to battery package casing sunken, trouble such as sealed leakage takes place, function and the drying function of drying filter through air cleaner, the gas of guaranteeing to get into the battery package is dry and clean, avoid polluting battery package pressure release relief valve and battery package, thereby do not reduce the function of pressure release relief valve and battery package.

In the present invention, the battery pack refers to a power battery pack used in an electric vehicle (including a pure electric vehicle EV, a hybrid electric vehicle HEV, a plug-in hybrid electric vehicle PHEV, an extended range electric vehicle EV, and the like), and may be a battery pack used in an electric motorcycle, an electric bicycle, and the like.

The pressure relief safety valve is also called as an explosion-proof valve or a safety breather valve, and is a valve through which air, water vapor and other gases can freely pass under certain pressure.

The drying filter is a shell with a certain volume, is made of plastic or metal, can be internally provided with some drying agents or not provided with the drying agents, and can have a certain self-drying or passive drying function.

The air filter is a shell with a certain volume, is made of plastic or metal, can be internally provided with a plurality of filter sponges or other filter materials, and can be replaced periodically under necessary conditions.

The one-way air inlet valve and the one-way air outlet valve can be opened for a long time in one way or closed for a long time under the condition of no external force, according to the functional requirements of the system, the one-way valve can open the air under the condition of certain one-way opening pressure, and the air volume can have certain change, otherwise, the one-way valve is closed under the condition of reverse pressure, and the air volume can be very small or has no air volume.

The air inlet and outlet pipeline can be used for exhausting air from the battery pack and also can be used for entering the air inlet and outlet pipeline of the battery pack from the environment.

And the air outlet pipeline is a pipeline which ensures that air is only transmitted to the outside of the battery pack from the inside of the battery pack in a one-way mode through the function of the one-way valve, and the ventilation quantity in the opposite direction is extremely low or none.

And the air inlet pipeline is a pipeline which ensures that air is transmitted into the battery pack from the outside of the battery pack only in a one-way mode through the function of the one-way valve, and the ventilation quantity in the opposite direction is extremely low or none.

Compared with the prior art, the invention has the following beneficial effects: the battery pack has the advantages of reasonable design and simple structure, and can effectively reduce pollutant emission and improve the safety of the battery pack.

Drawings

Fig. 1 is a schematic structural view of a prior art battery pack according to the present invention;

FIG. 2 is a schematic structural diagram of embodiment 1 of the present invention;

FIG. 3 is a schematic structural diagram of embodiment 2 of the present invention;

FIG. 4 is a schematic structural diagram of embodiment 3 of the present invention;

FIG. 5 is a schematic structural diagram of embodiment 4 of the present invention;

wherein: 00. the air filter comprises a battery pack, 10 a pressure relief safety valve, 20 an air inlet and outlet pipeline, 30 a drying filter, 40 a one-way air outlet valve, 50 an air outlet pipeline, 60 an air inlet pipeline, 70 a one-way air inlet valve, 80 and an air filter.

Detailed Description

The following embodiments of the present invention are described in detail with reference to the accompanying drawings, and the embodiments and specific operations of the embodiments are provided on the premise of the technical solution of the present invention, but the scope of the present invention is not limited to the following embodiments.