CN217740727U - Exhaust valve and soft package battery with same - Google Patents
Exhaust valve and soft package battery with same Download PDFInfo
- Publication number
- CN217740727U CN217740727U CN202220875664.2U CN202220875664U CN217740727U CN 217740727 U CN217740727 U CN 217740727U CN 202220875664 U CN202220875664 U CN 202220875664U CN 217740727 U CN217740727 U CN 217740727U
- Authority
- CN
- China
- Prior art keywords
- shell
- battery
- exhaust valve
- housing
- exhaust
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000007789 sealing Methods 0.000 claims abstract description 19
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 239000002985 plastic film Substances 0.000 claims description 6
- 229920006255 plastic film Polymers 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 3
- 210000004027 cell Anatomy 0.000 claims 3
- 210000005056 cell body Anatomy 0.000 claims 2
- 229920000642 polymer Polymers 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 6
- 239000012528 membrane Substances 0.000 abstract description 4
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 4
- 229910001416 lithium ion Inorganic materials 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K24/00—Devices, e.g. valves, for venting or aerating enclosures
- F16K24/04—Devices, e.g. valves, for venting or aerating enclosures for venting only
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/105—Pouches or flexible bags
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/317—Re-sealable arrangements
- H01M50/325—Re-sealable arrangements comprising deformable valve members, e.g. elastic or flexible valve members
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/35—Gas exhaust passages comprising elongated, tortuous or labyrinth-shaped exhaust passages
- H01M50/358—External gas exhaust passages located on the battery cover or case
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Sanitary Device For Flush Toilet (AREA)
- Bag Frames (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model belongs to the technical field of laminate polymer battery makes, concretely relates to discharge valve and have discharge valve's laminate polymer battery. A soft package battery with an exhaust valve comprises a battery body and a shell wrapped outside the battery body, wherein the exhaust valve is arranged on the shell; and the shell of the exhaust valve is in sealing fit with the shell. The utility model discloses laminate polymer battery can utilize the filter disc in the discharge valve to produce certain exhaust pressure after battery body produces gas through setting up discharge valve on the casing, makes the gas outgoing in the plastic-aluminum membrane to improve gaseous discharge effect, reduce gaseous remaining in the plastic-aluminum membrane, avoid laminate polymer battery the phenomenon of bulging to appear.
Description
Technical Field
The utility model belongs to the technical field of laminate polymer battery makes, concretely relates to discharge valve and have discharge valve's laminate polymer battery.
Background
The lithium ion battery is an electric energy storage device widely applied to the current market, and the application fields of the lithium ion battery comprise mobile phones, computers, new energy automobiles and the like. The lithium ion batteries can be classified into three types, distinguished in a packaging manner: pouch cells, hard shell cells, and cylindrical cells.
The soft package battery is characterized in that a polymer shell is sleeved on the liquid lithium ion battery. If the battery is placed in a high-temperature environment for a long time, especially when the battery is in a high-power state, a large amount of gas is generated inside the battery, and then the package outside the battery is expanded until the package is cracked under the action of the gas.
Therefore, it is necessary to design a soft package battery which can timely discharge gas to the outside when the gas is generated inside the battery, and avoid the bulge of the package outside the battery under the action of the gas.
Currently, chinese patent publication No. CN114204205A discloses a pouch battery and a heat sealing method for the pouch battery, which includes a battery cell, an aluminum plastic film, a metal tube and a sealing member, wherein the aluminum plastic film is two layers and is hermetically connected to each other along a circumferential sealing line to form an accommodating space. The periphery of the metal pipe is hermetically connected to a sealing line between the aluminum plastic films on the two sides, the two ends of the metal pipe are open, one end of the metal pipe is located in the accommodating space, and the other end of the metal pipe extends out of the accommodating space.
Although the pouch battery can discharge gas in the pouch, the gas discharge method is to discharge gas in the pouch battery by manually detaching or opening the sealing member by a technician. This exhaust mode is that gas in the laminate polymer battery opens the back at the sealing member, discharges in the laminate polymer battery by oneself under the effect of atmospheric pressure, does not give gaseous certain exhaust pressure, leads to still gaseous remaining in the laminate polymer battery, and exhaust effect is not good.
SUMMERY OF THE UTILITY MODEL
Based on the above-mentioned not enough that exists among the prior art, the utility model provides a discharge valve and have discharge valve's laminate polymer battery.
In order to achieve the purpose of the utility model, the utility model adopts the following technical scheme:
the exhaust valve comprises a shell and a filter disc, wherein the filter disc is filled in the shell; the shell forms an air inlet hole and an air outlet hole which are communicated with the inside and the outside of the shell.
Preferably, the inner wall of the housing is cylindrical in shape.
As the preferred scheme, the air inlet hole and the air outlet hole are respectively arranged on two opposite sides of the shell.
The utility model also provides a soft-packaged battery with the exhaust valve of the above scheme, which comprises a battery body and a shell wrapped outside the battery body, wherein the exhaust valve is arranged on the shell; the shell of the exhaust valve is in sealing fit with the shell.
Preferably, the air inlet hole faces the battery body, and the air outlet hole faces the outside of the shell.
Preferably, a sealing film is arranged between the shell and the shell.
Preferably, the shell is an aluminum plastic film.
Preferably, the shell and the shell are connected by welding.
As the preferred scheme, the longitudinal section of the cavity of the shell at the exhaust valve mounting position is in an isosceles triangle shape.
Preferably, one side of the shell of the exhaust valve extends into the isosceles triangle cavity, and the other side of the shell of the exhaust valve is positioned outside the shell.
Compared with the prior art, the utility model, beneficial effect is:
the utility model discloses laminate polymer battery can utilize the filter element in the discharge valve to produce certain exhaust pressure through set up discharge valve on the casing after battery body produces gas, makes the gas outgoing in the plastic-aluminum membrane to improve gaseous discharge effect, reduce gaseous remaining in the plastic-aluminum membrane, avoid laminate polymer battery the phenomenon of bulging to appear.
Drawings
Fig. 1 is a schematic structural view of an exhaust valve according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of an entire pouch battery according to a second embodiment of the present invention;
fig. 3 is a front view of a pouch battery according to a second embodiment of the present invention;
fig. 4 is a side view of a pouch battery according to a second embodiment of the present invention;
fig. 5 is a top view of a pouch battery according to a second embodiment of the present invention;
FIG. 6 is an enlarged partial schematic view of FIG. 4;
fig. 7 is a partially enlarged schematic view of fig. 5.
Wherein, 1, the battery body; 2. a housing; 3. sealing the cavity; 4. an exhaust valve; 5. a housing; 6. sealing the film; 7. a placement groove; 8. an air intake; 9. an air outlet; 10. and (5) a filter disc.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be obtained from these drawings without inventive effort. In addition, directional terms referred to in the following examples, for example: up, down, left, right, front or rear, etc., are simply directions with reference to the drawings. Accordingly, the directional terminology is used for purposes of illustration and is in no way limiting.
The first embodiment is as follows:
as shown in FIG. 1, the exhaust valve designed in this embodiment includes a housing 5, and the housing 5 has an air inlet hole 8 and an air outlet hole 9 for communicating the inside and the outside of the housing 5. Air inlet holes 8 and 9 are respectively provided at opposite sides of the housing 5.
The inner wall of the shell 5 is cylindrical, and the shell 5 is filled with a filter disc 10. The filter 10 is provided in a cylindrical shape to fit the inner space of the housing. The filter disc 10 is made of a multi-molecular material, the filter disc 10 can generate certain adsorption force to air, can suck air through the air inlet 8, exhausts the air through the air outlet 9, and can form exhaust pressure on one side of the air inlet 8.
The second embodiment:
as shown in fig. 2 to 5, the pouch battery with a vent valve designed in this embodiment includes a battery body 1 and a case 2 wrapped outside the battery body 1.
The housing 2 of the present embodiment is made of an aluminum plastic film.
As shown in fig. 6 and 7, the case 2 is provided with the exhaust valve 4, the battery body 1 is wrapped in the case 2, the exhaust valve 4 is installed on one side of the case 2, and the longitudinal section of the cavity 3 at the installation position is in an isosceles triangle shape. The gas generated in the battery body 1 enters the cavity 3.
The specific structure of the exhaust valve 4 is the same as that of the first embodiment.
The outer shell 5 of the exhaust valve 4 partially extends into the case 2, one side of the outer shell 5 extends into the gap between the case 2 and the battery body 1, and the other side is positioned outside the case 2.
The shell 5 and the shell 2 are connected with each other in a welding mode, and the sealing performance between the shell 5 and the shell 2 is guaranteed.
A sealing film 6 for enhancing the sealing property is further provided between the housing 5 and the case 2. The case 2 has a placement groove 7 for placing the sealing film 6 inside, and the sealing film 6 is fitted into the placement groove 7, thereby further ensuring the sealing property between the case 2 and the housing 5.
The air inlet hole 8 of shell is located cavity 3 one side, and venthole 9 is located casing 2 outside one side relative to inlet hole 8, and the gas in airtight cavity 3 can get into inside shell 5 through inlet hole 8, and the venthole 9 on the rethread shell 5 makes gas discharge outside casing 2.
In the shell 5 was got into through inlet port 8 in airtight cavity 3 to gaseous follow, it was outside to discharge to casing 2 by venthole 9 behind filter element 10 to the realization can not outwards extrude casing 2 after making battery body 1 produce gas, is discharged by discharge valve 4 to the realization. Thereby avoiding the situation of bulging of the housing 2.
The filter sheet 10 can generate attraction force to the gas in the closed cavity 3, so that the gas in the closed cavity 3 can flow out of the exhaust valve 4 under the action of the attraction force, the exhaust effect is further improved, and a certain exhaust pressure is given to the gas in the closed cavity 3. And can be different according to the battery specification, place the filter element 10 of different specifications, adjust the size of giving the exhaust pressure, satisfy the exhaust demand of different specification batteries, further promote the exhaust effect.
The exhaust valve 4 further comprises a control switch arranged on the shell 5 and used for controlling the opening and closing of the air outlet, and the air outlet 9 can be closed under the condition that the battery body 1 does not need to exhaust air, so that the battery body is in a completely closed state.
The foregoing has been a detailed description of the preferred embodiments and principles of the present invention, and it will be apparent to those skilled in the art that variations may be made in the specific embodiments based on the concepts of the present invention, and such variations are considered as within the scope of the present invention.
Claims (10)
1. The exhaust valve is characterized by comprising a shell and a filter disc, wherein the filter disc is filled in the shell; the shell forms an air inlet hole and an air outlet hole which are communicated with the inside and the outside of the shell.
2. A vent valve in accordance with claim 1, wherein the inner wall of the housing is cylindrical in shape.
3. A vent valve in accordance with claim 1, wherein the inlet and outlet apertures are provided on opposite sides of the housing.
4. A pouch cell with a vent valve according to any of claims 1-3, comprising a cell body and a housing wrapped around the cell body, said housing being provided with said vent valve; the shell of the exhaust valve is in sealing fit with the shell.
5. The laminate battery with the exhaust valve as claimed in claim 4, wherein the air inlet hole faces the battery body, and the air outlet hole faces the outside of the housing.
6. The laminate battery with the exhaust valve according to claim 4, wherein a sealing film is arranged between the outer shell and the shell.
7. The pouch cell with a vent valve according to any of claims 4-6, wherein said case is an aluminum plastic film.
8. The laminate battery with the exhaust valve according to claim 7, wherein the outer casing is connected with the housing by welding.
9. The flexible package battery with the exhaust valve according to any one of claims 4 to 6, wherein the longitudinal section of the cavity of the housing at the location where the exhaust valve is installed is in the shape of an isosceles triangle.
10. The pouch cell with vent valve according to claim 9, wherein said vent valve has a housing with one side extending into said isosceles triangle cavity and the other side located outside said housing.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220875664.2U CN217740727U (en) | 2022-04-15 | 2022-04-15 | Exhaust valve and soft package battery with same |
| DE202023101864.5U DE202023101864U1 (en) | 2022-04-15 | 2023-04-13 | Outlet valve and pouch cell with an outlet valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220875664.2U CN217740727U (en) | 2022-04-15 | 2022-04-15 | Exhaust valve and soft package battery with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217740727U true CN217740727U (en) | 2022-11-04 |
Family
ID=83818529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220875664.2U Active CN217740727U (en) | 2022-04-15 | 2022-04-15 | Exhaust valve and soft package battery with same |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN217740727U (en) |
| DE (1) | DE202023101864U1 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114204205A (en) | 2021-12-10 | 2022-03-18 | 远景动力技术(江苏)有限公司 | Soft package battery and heat sealing method thereof |
-
2022
- 2022-04-15 CN CN202220875664.2U patent/CN217740727U/en active Active
-
2023
- 2023-04-13 DE DE202023101864.5U patent/DE202023101864U1/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| DE202023101864U1 (en) | 2023-06-13 |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |