CN215266567U - Balance moisture absorption explosion-proof valve for ternary lithium power battery pack - Google Patents
Balance moisture absorption explosion-proof valve for ternary lithium power battery pack Download PDFInfo
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- CN215266567U CN215266567U CN202121218316.XU CN202121218316U CN215266567U CN 215266567 U CN215266567 U CN 215266567U CN 202121218316 U CN202121218316 U CN 202121218316U CN 215266567 U CN215266567 U CN 215266567U
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- moisture absorption
- battery pack
- umbrella
- valve
- power battery
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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 discloses a balanced moisture absorption explosion-proof valve for a ternary lithium power battery pack, wherein an end cover is arranged on an inner and outer gas circulation path, a mandril assembly is connected with the end cover, the explosive inner force is the driving force of the mandril assembly, and a reset elastic part is arranged between the mandril assembly and a shell and is used for resetting the mandril assembly; the protective cover is fixedly connected with the shell, the balance valve comprises at least 2 stages of gas circulation channels from outside to inside, a film with bidirectional conduction performance is arranged on the gas circulation path of the primary channel, the secondary channel is controlled to be opened and closed by at least 2 umbrella valves, and the adjacent umbrella valves are arranged in a vertically staggered manner; the absorbent assembly is disposed proximate the secondary channel. In this way, the utility model discloses utilize two independent modules to play a role under battery package out of control and normal two states respectively, can in time balance internal and external pressure under the out of control condition, have explosion-proof function, also can keep internal and external pressure balance under normal operating condition, play the function of dehumidification moisture absorption.
Description
Technical Field
The utility model relates to a balanced moisture absorption explosion-proof valve for ternary lithium power battery package.
Background
When the battery receives impact or short circuit, a large amount of gas can be generated in the battery, so that an explosion-proof valve is correspondingly arranged on the battery pack, but most of the explosion-proof valves used by the current battery packs do not have the function of controlling the pressure of air in and out, the safety performance cannot be guaranteed, and the danger level is still high.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem of main solution provides a balanced moisture absorption explosion-proof valve for ternary lithium power battery package can utilize two independent modules to play a role under battery package out of control and two normal states respectively, can have explosion-proof function, also can effectively dehumidify the moisture absorption, keeps inside and outside pressure balance.
In order to solve the technical problem, the utility model discloses a technical scheme be: the utility model provides a balanced moisture absorption explosion-proof valve for ternary lithium power battery package, including locating two modules that independently open and close on the casing: the blasting module comprises an end cover, a push rod assembly, a reset elastic piece and a protective cover, wherein the end cover is arranged on an inner and outer gas flow path, the push rod assembly is connected with the end cover, the blasting internal force is the driving force of the push rod assembly, and the reset elastic piece is arranged between the push rod assembly and the shell and used for resetting the push rod assembly; the protective cover is fixedly connected with the shell and used for filtering the circulating gas;
moisture absorption module is including locating balanced valve and moisture absorption subassembly on the gas circulation route, balanced valve is from outer to interior including 2 grade at least gas circulation passageways: the umbrella valve comprises a primary channel and a secondary channel, wherein a film with bidirectional conduction performance is arranged on a gas circulation path of the primary channel, the secondary channel is controlled to be opened and closed by at least 2 umbrella valves, and adjacent umbrella valves are arranged in a vertically staggered manner; the moisture absorption component is arranged close to the secondary channel and used for controlling condensation inside the battery pack and generating moisture absorption and dehumidification effects.
In a preferred embodiment of the present invention, the elastic restoring member is covered with a protective cover having a diameter smaller than that of the protective cover.
In a preferred embodiment of the present invention, the protective cover is uniformly provided with a plurality of filtering holes in the circumferential direction for filtering the impurities inside the battery pack, which are larger than the aperture of the filtering holes.
In a preferred embodiment of the present invention, the umbrella valve comprises an umbrella post and an umbrella skirt, the umbrella post is used for sealing and fixing, and the umbrella skirt covers the inlet and outlet directions of the secondary channel by using umbrella-shaped radian.
In a preferred embodiment of the present invention, the umbrella valve is a silicone umbrella valve.
In a preferred embodiment of the present invention, the membrane is an expanded polytetrafluoroethylene membrane, and is welded to the primary channel.
In a preferred embodiment of the present invention, the protective cover and the moisture absorption assembly have at least one side extending outward to form a mounting handle, the mounting hole on the mounting handle is aligned with the axis, and the protective cover and the moisture absorption assembly are fixedly connected to the housing by a bolt.
In a preferred embodiment of the present invention, the balance valve is further provided with a protective cover for protecting the membrane from damage.
In a preferred embodiment of the present invention, the end cap is connected to the housing through a sealing ring, and the protection cover is connected to the housing through a sealing ring.
The utility model has the advantages that: the utility model discloses utilize two independent modules to play a role under battery package out of control and normal two states respectively, can in time balance internal and external pressure under the out of control condition, have explosion-proof function, also can keep internal and external pressure balance under normal operating condition, play the function of dehumidification moisture absorption.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings 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 invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:
fig. 1 is a schematic structural view of a preferred embodiment of the balance moisture absorption explosion-proof valve for the ternary lithium power battery pack of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "front" and "rear" and the like are based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are conventionally placed when used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element to be referred must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, 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 invention can be understood in specific cases to those skilled in the art.
In the present disclosure, unless otherwise expressly stated or limited, the first feature may comprise both the first and second features directly contacting each other, and also may comprise the first and second features not being directly contacting each other but being in contact with each other by means of further features between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.
Referring to fig. 1, an embodiment of the present invention includes:
the utility model provides a balanced moisture absorption explosion-proof valve for ternary lithium power battery package, is including locating two modules that independently open and close on casing 5: blasting module and moisture absorption module.
The blasting module comprises an end cover 1, a mandril component 2, a reset elastic piece 3 and a protective cover 4, wherein the end cover 1 is arranged on an inner and outer gas circulation path and is connected with the shell 5 in a sealing way through a sealing ring.
The ejector rod assembly 2 is connected with the end cover 1, the blasting internal force is the driving force of the ejector rod assembly 2, and the reset elastic piece 3 is arranged between the ejector rod assembly 2 and the shell 5 and used for resetting the ejector rod assembly 2.
The protective cover 4 is circumferentially and hermetically connected with the shell 5 through a sealing ring and is used for filtering circulating gas.
The protection casing 4 has evenly laid a plurality of filtration pores 41 in the circumferencial direction for filter the inside debris that is greater than filtration pore diameter of battery package, especially when the inside explosion of battery package is out of control, the protection casing can make most impurity can be by the separation, can not by direct blowout.
The periphery of the reset elastic piece 3 is covered with a protective cover 6, and the diameter of the protective cover 6 is smaller than that of the protective cover 4. A safety cover 6 for protecting ejector pin subassembly and the smooth and easy operation of elastic component that resets effectively prevents impurity entering elastic component that resets in, influences the normal work of elastic component 3 that resets.
The moisture absorption module comprises a balance valve 7 and a moisture absorption component 8 which are arranged on a gas flow path.
The balance valve 7 comprises at least 2 stages of gas circulation channels from outside to inside: a primary channel and a secondary channel.
And a film 71 with bidirectional conduction performance is arranged on a gas flow path of the primary channel, and the film 71 is an expanded polytetrafluoroethylene film and is welded and connected with the primary channel. The balance valve 7 is also provided with a protective cover 9 for protecting the film from being damaged.
The opening and closing of the secondary channel are controlled by at least 2 umbrella valves 72, and the adjacent umbrella valves 72 are arranged in a vertically staggered manner.
The umbrella valve 72 includes an umbrella post for sealing and fixing and an umbrella skirt covering the inlet and outlet directions of the secondary passage with umbrella-shaped radians. The umbrella valve is preferably a silica gel umbrella valve.
When the internal and external pressures of the battery pack are balanced, no external pressure is applied to the umbrella skirt of the umbrella valve 72, and the umbrella valve keeps sealing and covering the secondary channel.
When micro-pressure difference is generated inside and outside the battery pack, pressure is applied from the inner side of the umbrella skirt to the umbrella top direction, the umbrella-shaped radian tends to be linear, the secondary channel is partially opened, and gas diffuses and circulates from the edge of the umbrella skirt to two sides.
At least one side of the protective cover 6 and the moisture absorption component 8 extends outwards to form a mounting handle, mounting holes in the mounting handle are aligned with the same axle center, and the protective cover 6 and the moisture absorption component 8 are fixedly connected with the shell 5 through bolts 9.
The utility model utilizes two independent modules to respectively act under the two states of out-of-control and normal of the battery pack, thereby balancing the internal and external pressure in time under the out-of-control condition and playing the role of explosion prevention; can keep the balance of internal and external pressure under the normal working state and has the functions of dehumidification and moisture absorption.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all of which utilize the equivalent structure or equivalent flow transformation made by the content of the specification of the present invention, or directly or indirectly applied to other related technical fields, all included in the same way in the patent protection scope of the present invention.
Claims (9)
1. The utility model provides a balanced moisture absorption explosion-proof valve for ternary lithium power battery package which characterized in that, including locating two modules that independently open and close on the casing: the blasting module comprises an end cover, a push rod assembly, a reset elastic piece and a protective cover, wherein the end cover is arranged on an inner and outer gas flow path, the push rod assembly is connected with the end cover, the blasting internal force is the driving force of the push rod assembly, and the reset elastic piece is arranged between the push rod assembly and the shell and used for resetting the push rod assembly; the protective cover is fixedly connected with the shell and used for filtering the circulating gas;
moisture absorption module is including locating balanced valve and moisture absorption subassembly on the gas circulation route, balanced valve is from outer to interior including 2 grade at least gas circulation passageways: the umbrella valve comprises a primary channel and a secondary channel, wherein a film with bidirectional conduction performance is arranged on a gas circulation path of the primary channel, the secondary channel is controlled to be opened and closed by at least 2 umbrella valves, and adjacent umbrella valves are arranged in a vertically staggered manner; the moisture absorption component is arranged close to the secondary channel and used for controlling condensation inside the battery pack and generating moisture absorption and dehumidification effects.
2. The balanced moisture absorption explosion-proof valve for the ternary lithium power battery pack as claimed in claim 1, wherein the reset elastic member is covered with a protection cover at the periphery, and the diameter of the protection cover is smaller than that of the protection cover.
3. The balanced moisture absorption explosion-proof valve for the ternary lithium power battery pack according to claim 1, wherein the protective cover is uniformly provided with a plurality of filtering holes in the circumferential direction for filtering impurities inside the battery pack, wherein the impurities are larger than the pore diameter of the filtering holes.
4. The balanced moisture absorption explosion-proof valve for the ternary lithium power battery pack as claimed in claim 1, wherein the umbrella valve comprises an umbrella post and an umbrella skirt, the umbrella post is used for sealing and fixing, and the umbrella skirt covers the inlet and outlet directions of the secondary channel by using an umbrella-shaped radian.
5. The balanced moisture absorption explosion-proof valve for the ternary lithium power battery pack according to claim 1, wherein the umbrella valve is a silica gel umbrella valve.
6. The balanced moisture absorption explosion-proof valve for the ternary lithium power battery pack as claimed in claim 1, wherein the thin film is an expanded polytetrafluoroethylene film and is welded with the primary channel.
7. The balanced moisture absorption explosion-proof valve for the ternary lithium power battery pack as claimed in claim 1, wherein at least one side of the protection cover and the moisture absorption component is extended outwards to form a mounting handle, mounting holes in the mounting handle are coaxially aligned, and the protection cover and the moisture absorption component are fixedly connected with the shell through bolts.
8. The balanced moisture absorption explosion-proof valve for a ternary lithium power battery pack as claimed in claim 1, wherein the balanced valve is further provided with a protective cover for protecting the membrane from damage.
9. The balanced moisture absorption explosion-proof valve for the ternary lithium power battery pack according to claim 1, wherein the end cover is connected with the shell in a sealing manner through a sealing ring, and the protective cover is connected with the shell in a circumferential sealing manner through the sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121218316.XU CN215266567U (en) | 2021-06-02 | 2021-06-02 | Balance moisture absorption explosion-proof valve for ternary lithium power battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121218316.XU CN215266567U (en) | 2021-06-02 | 2021-06-02 | Balance moisture absorption explosion-proof valve for ternary lithium power battery pack |
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| CN215266567U true CN215266567U (en) | 2021-12-21 |
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| CN202121218316.XU Active CN215266567U (en) | 2021-06-02 | 2021-06-02 | Balance moisture absorption explosion-proof valve for ternary lithium power battery pack |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114517798A (en) * | 2022-02-23 | 2022-05-20 | 三一重机有限公司 | Hydraulic drive system and working machine |
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2021
- 2021-06-02 CN CN202121218316.XU patent/CN215266567U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114517798A (en) * | 2022-02-23 | 2022-05-20 | 三一重机有限公司 | Hydraulic drive system and working machine |
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