CN217903256U - Battery pack capable of balancing air pressure - Google Patents
Battery pack capable of balancing air pressure Download PDFInfo
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- CN217903256U CN217903256U CN202220840134.4U CN202220840134U CN217903256U CN 217903256 U CN217903256 U CN 217903256U CN 202220840134 U CN202220840134 U CN 202220840134U CN 217903256 U CN217903256 U CN 217903256U
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- main body
- body part
- gas
- battery pack
- air
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model relates to a battery package of balanced atmospheric pressure relates to battery technical field, and this battery package of balanced atmospheric pressure includes: the one-way vent valve is connected with the main body part and used for discharging gas in the main body part; the air storage tank is communicated with the main body part through a one-way air delivery valve and is used for delivering dry air into the main body part. The main body part of the battery pack is provided with the one-way vent valve, so that gas in the main body part can be discharged outwards, and external gas cannot enter the main body part; meanwhile, the gas storage tank with the one-way gas transmission valve is arranged on the main body part, so that when the gas pressure in the main body part is lower than the external gas pressure within a certain range, the gas in the gas storage tank is conveyed into the main body part, the balance of the gas pressure inside and outside the main body part is ensured, the external gas cannot be mixed in the main body part, and the problems that the insulation performance of the battery pack is reduced due to the fact that bad gas is mixed in the battery pack, or internal structural parts or functional parts of the battery pack are corroded are solved.
Description
Technical Field
The application relates to the technical field of batteries, in particular to a battery pack for balancing air pressure.
Background
The battery pack is an important part of a battery system, is a carrier of a battery, plays a key role in protecting the safety of the battery and the safety of personnel, and is designed to meet the requirements of related performances such as sealing performance, corrosion resistance, anti-aging performance, vibration resistance, impact resistance, collision resistance and the like.
In production, the battery pack needs to meet the requirement of IP67 (under the condition of not damaging the shell, the battery pack is not invaded by dust, and when the battery pack is immersed in water with the depth of not more than 1m, the internal parts can be protected for not less than 30 minutes), so the battery pack is generally designed to be sealed and waterproof, the change of temperature and altitude can cause the change of the internal air pressure of the battery pack, and if the battery pack is completely sealed and airtight, the battery pack can be cracked under the action of the internal and external pressure difference under extreme conditions.
The waterproof ventilation valve is commonly used at present to realize the internal and external air pressure balance of the battery pack and prevent the above situations. However, the gas-permeable valve can be permeable to water vapor or other acidic or alkaline gases, which can lead to a harsh environment inside the battery pack, increase the degree of contamination inside the battery pack, decrease the insulating property of the battery pack, or cause corrosion of internal structural or functional components of the battery pack.
SUMMERY OF THE UTILITY MODEL
The battery pack with balanced air pressure aims to overcome the problem that internal components of the battery pack are corroded due to the fact that water vapor and other harmful gases enter the battery pack in the related art.
To achieve the above object, the present application provides a battery pack for equalizing air pressure, including:
a main body part;
a one-way vent valve connected to the main body portion and configured to discharge gas in the main body portion;
and the air storage tank is communicated with the main body part through a one-way air delivery valve and is used for delivering the dry air into the main body part.
In some alternative embodiments, the one-way vent valve and the air container are disposed on two side walls or the same side wall of the main body.
In some alternative embodiments, the one-way vent valve and the air tank are respectively disposed on two side walls of the main body in a length direction.
In some optional embodiments, the one-way vent valve is in threaded or snap-fit connection with the main body portion;
the air storage tank is in threaded connection or buckled connection with the main body part.
In some optional embodiments, the gas storage tank is filled with inert gas or nitrogen.
In some alternative embodiments, the main body portion has a cubic structure and is made of aluminum or steel.
In some alternative embodiments, the air container is in the shape of a cylinder, a sphere or a football.
In some optional embodiments, the one-way vent valve is provided with at least one.
In some alternative embodiments, the air storage tank is provided with an air injection port.
In some alternative embodiments, the opening pressure of the one-way gas delivery valve is less than the closing pressure of the one-way vent valve.
The beneficial effect that technical scheme that this application provided brought includes:
the embodiment of the application provides a battery pack with balanced air pressure, wherein a one-way vent valve is arranged on a main body part of the battery pack, and when the air pressure in the main body part is higher than the external air pressure by a certain value, the one-way vent valve is opened to exhaust air to the outside, so that the air in the main body part can be discharged to the outside, and the external air cannot enter the main body part; meanwhile, the gas storage tank with the one-way gas transmission valve is arranged on the main body part, so that when the gas pressure in the main body part is lower than the external gas pressure within a certain range, the gas in the gas storage tank is conveyed into the main body part, the balance of the gas pressure inside and outside the main body part is ensured, and the external gas cannot be mixed in the main body part, thereby solving the problems that the environment inside the battery pack becomes severe, the internal pollution degree is increased, the insulating property of the battery pack is reduced, or the internal structural part or the functional part of the battery pack is corroded due to the mixing of the bad gas in the battery pack.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a side view of a battery pack for equalizing air pressure according to the present invention;
fig. 2 is a schematic diagram of a left side structure of a battery pack for equalizing air pressure according to the present invention;
fig. 3 is a schematic diagram of a right side structure of a battery pack for equalizing air pressure according to the present invention.
Reference numerals: 1. a main body part; 2. a one-way vent valve; 3. an air storage tank.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The embodiment of the application provides a battery pack capable of balancing air pressure, and the problem that internal components of the battery pack are corroded due to the fact that water vapor and other harmful gases enter the battery pack can be solved.
As shown in fig. 1 to 3, a battery pack for equalizing air pressure includes a main body 1, a one-way vent valve 2 and an air reservoir 3, wherein the one-way vent valve 2 is connected to the main body 1 and is used for discharging air in the main body 1; the gas tank 3 is communicated with the main body 1 through a one-way gas delivery valve, and is used for delivering dry gas into the main body 1.
It can be understood that when the air pressure value in the main body part 1 is higher than the external air pressure value, the one-way ventilation valve 2 is opened to discharge the air in the main body part 1, and when the air pressure value in the main body part 1 is lower than the external air pressure value, the one-way air delivery valve connected with the air storage tank 3 is opened, and the air storage tank 3 delivers the dry air into the main body part 1.
In this example, the opening pressure of the one-way vent valve 2 may be 1 to 10kpa, or the value may be increased to 100kpa after the strength of the battery pack is reinforced by the vehicle body structure, and when the difference between the air pressure in the main body portion 1 and the external air pressure is less than 1kpa, the one-way vent valve 2 is closed; the opening pressure of the one-way air delivery valve on the air storage tank 3 can be 1-10kpa, and when the difference value between the air pressure in the main body part 1 and the external air pressure is less than 1kpa, the one-way air delivery valve is closed.
It should be noted that the threshold values for opening and closing the one-way vent valve 2 and the one-way air delivery valve may be specifically set according to the structural strength of the main body portion 1, and are not limited to the threshold values in this example, but it should be noted that the set threshold values should reduce the number of triggers as much as possible under normal working conditions, so as to avoid affecting the normal operation of the battery pack.
In some alternative embodiments, the one-way vent valve 2 and the air container 3 are disposed on two different sidewalls or the same sidewall of the main body 1.
Preferably, the one-way vent valve 2 and the gas tank 3 are respectively provided on both side walls in the longitudinal direction of the main body 1 so that the gas in the main body 1 flows in the same direction.
In other embodiments, the relative position between the gas storage tank 3 and the one-way vent valve 2 may not be limited, and only when a plurality of one-way vent valves 2 and gas storage tanks 3 are both disposed on the main body, the one-way vent valves 2 and the gas storage tanks 3 are disposed at two ends of the main body 1, which is more favorable for the flow of gas in the main body 1, and reduces the influence of the gas flow on the internal components of the battery.
In some optional embodiments, the one-way vent valve 2 is in threaded connection or snap connection with the main body portion 1; the gas tank 3 is screwed or snap-fitted to the main body 1.
The one-way vent valve 2 and the main body part 1 are detachably connected, preferably in a threaded connection or a buckling connection, so that the one-way vent valve can be replaced conveniently.
The gas storage tank 3 and the main body part 1 are detachably connected, preferably in a threaded connection or a buckling connection, so that when the gas in the gas storage tank 3 is used up, a new gas storage tank is replaced.
When the gas tank 3 is replaced, the one-way gas transfer valve ensures that the gas in the main body 1 does not leak from the mounting port of the gas tank 3.
Preferably, the gas storage tank 3 is provided with a gas injection port, so that when the gas in the gas storage tank 3 is exhausted, new required gas is injected into the gas storage tank 3 from the gas injection port, and the gas injection port is also provided with a valve to ensure that external bad gas cannot enter the gas storage tank.
In some alternative embodiments, the gas storage tank 3 is filled with inert gas or nitrogen.
It is understood that the gas inside the main body 1 is an inert gas, nitrogen gas, or other gas that does not readily react with metals and is flame retardant, and therefore the gas inside the gas tank 3 is preferably the same gas as the gas inside the main body 1 itself.
In some alternative embodiments, the main body 1 has a cubic structure and is made of aluminum or steel.
In other embodiments, the shape of the main body portion 1 may also be a cylinder, and the main body portion 1 not only has a certain strength but also has a light self-weight due to the use of aluminum or steel material.
In some alternative embodiments, the air container 3 is a cylinder, a sphere or a football shape.
In this example, the air tank 3 is a cylindrical body and is located on one side wall in the longitudinal direction of the rectangular main body 1.
In some alternative embodiments, the above-mentioned one-way venting valve 2 is provided with at least one.
It can be understood that the number of one-way vent valves 2 is too much to increase the cost, and the structure of the main body part 1 is weakened, and on the premise of ensuring the exhaust effect, two one-way vent valves are arranged, but according to the size of the main body part 1 of the battery, the number can be increased properly.
Preferably, the plurality of one-way vent valves 2 are all arranged on the same side of the main body part 1.
In some alternative embodiments, the opening pressure of said one-way gas delivery valve is lower than the closing pressure of said one-way gas permeation valve 2.
It can be understood that the opening pressure of the one-way air delivery valve is set to be smaller than the closing pressure of the one-way vent valve 2, so that the situation that the one-way air delivery valve and the one-way vent valve are opened simultaneously is avoided.
The working principle of the embodiment of the application is as follows: when the air pressure in the main body part 1 is larger than the external air pressure by a certain value, the one-way vent valve 2 is opened, the air in the main body part 1 is discharged outwards through the one-way vent valve 2, and the one-way vent valve 2 is closed until the difference value between the air pressure in the main body part 1 and the air pressure outside the main body part 1 is smaller than the certain value; when the air pressure in the main body part 1 is smaller than the external air pressure by a certain value, the one-way air delivery valve of the air storage tank 3 is opened, the air in the air storage tank 3 is delivered into the main body part 1, until the difference between the air pressure in the main body part 1 and the air pressure outside the main body part 1 is smaller than a certain value, the one-way air delivery valve is closed, and when the air in the air storage tank 3 is exhausted, the required air can be filled into the air storage tank 3 through the air injection port, or a new air storage tank can be directly replaced.
Compared with the prior art, the application has the advantages that: the main body part is provided with the one-way vent valve, so that gas with water vapor outside or harmful to the structure in the main body part cannot enter the main body part, and meanwhile, the main body part is provided with the gas storage tank with the one-way gas transmission valve, so that when the gas pressure in the main body part is lower than the external gas pressure, the gas which is pre-filled in the gas storage tank and meets the working environment in the battery pack can be transmitted into the main body part, thereby avoiding the generation of condensed water inside and improving the insulating property of the battery pack; the gas in the gas storage tank is set to be inert gas or nitrogen or the same gas as the gas in the main body part, so that the working environment in the main body part can be protected, and the corrosion degree of the battery pack is reduced; and because can control battery package inside not have oxygen, harm when can reduce thermal runaway and take place.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are 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. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A battery pack for equalizing air pressure, comprising:
a main body (1);
a one-way ventilation valve (2) connected to the main body (1) and configured to discharge gas from the main body (1);
and the air storage tank (3) is communicated with the main body part (1) through a one-way air delivery valve and is used for delivering dry air into the main body part (1).
2. The battery pack for equalizing air pressure of claim 1, wherein:
the one-way ventilation valve (2) and the air storage tank (3) are arranged on two side walls or the same side wall of the main body part (1).
3. The air pressure equalizing battery pack of claim 1, wherein:
the one-way ventilation valve (2) and the air storage tank (3) are respectively arranged on two side walls of the main body part (1) in the length direction.
4. The battery pack for equalizing air pressure of claim 3, wherein:
the one-way vent valve (2) is in threaded connection or buckled connection with the main body part (1);
the air storage tank (3) is in threaded connection or buckled connection with the main body part (1).
5. The battery pack for equalizing air pressure of claim 1, wherein:
and inert gas or nitrogen is filled in the gas storage tank (3).
6. The battery pack for equalizing air pressure of claim 1, wherein:
the main body part (1) is of a cubic structure and made of aluminum or steel materials.
7. The air pressure equalizing battery pack of claim 1, wherein:
the gas storage tank (3) is a cylinder, a sphere or a football shape.
8. The battery pack for equalizing air pressure of claim 3, wherein:
the one-way ventilation valve (2) is provided with at least one.
9. The air pressure equalizing battery pack of claim 8, wherein:
and a gas injection port is arranged on the gas storage tank (3).
10. The air pressure equalizing battery pack of any one of claims 1-9, wherein:
the opening pressure of the one-way air delivery valve is smaller than the closing pressure of the one-way vent valve (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220840134.4U CN217903256U (en) | 2022-04-12 | 2022-04-12 | Battery pack capable of balancing air pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220840134.4U CN217903256U (en) | 2022-04-12 | 2022-04-12 | Battery pack capable of balancing air pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217903256U true CN217903256U (en) | 2022-11-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220840134.4U Active CN217903256U (en) | 2022-04-12 | 2022-04-12 | Battery pack capable of balancing air pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217903256U (en) |
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2022
- 2022-04-12 CN CN202220840134.4U patent/CN217903256U/en active Active
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