CN218036121U - Device for simulating and testing packaging reliability of soft package battery - Google Patents
Device for simulating and testing packaging reliability of soft package battery Download PDFInfo
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- CN218036121U CN218036121U CN202221222072.7U CN202221222072U CN218036121U CN 218036121 U CN218036121 U CN 218036121U CN 202221222072 U CN202221222072 U CN 202221222072U CN 218036121 U CN218036121 U CN 218036121U
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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 device for simulating inspection laminate polymer battery encapsulation reliability, including the upper cover plate, be used for placing model battery's lower apron and admission line subassembly, the upper cover plate is equipped with the installation window of admission line subassembly, model battery fixes the upper cover plate with down between the apron, be equipped with the air inlet on the model battery, the air inlet with the admission line subassembly is connected. The utility model discloses simulation laminate polymer battery chemical reaction produces gaseous sight, aerifys model battery with little gas flow through the admission line subassembly, loses heart or breaks until the battery, detects the inside atmospheric pressure of aerifing in-process model battery simultaneously for the atmospheric pressure resistance performance and the gas storage volume after the soft-packing encapsulation of evaluation judge from the battery rupture point and encapsulate back seal district weak spot, from the reliability after different angle inspection laminate polymer battery encapsulates.
Description
Technical Field
The utility model relates to a laminate polymer battery test technical research especially relates to a device for simulating inspection laminate polymer battery encapsulation reliability.
Background
The aluminum plastic film composite material is often used as a packaging material of a soft package battery due to the advantages of light material, thin layer, flexible design and the like. The packaging process of the soft package battery generally comprises the working procedures of punching and forming an aluminum plastic film, putting a battery core into a shell, top-side sealing, liquid injection, formation, final sealing and the like. The top side sealing and the final sealing of the soft package battery are generally realized by melting and bonding thermoplastic resins such as polypropylene or polyethylene and the like in the inner layers of the upper and lower aluminum-plastic film composite materials under the heating action of the end sockets so as to play a role in sealing.
Along with the development of new forms of energy electric automobile, the energy density requirement to the battery is higher and higher, and in order to improve laminate polymer battery volume energy density, laminate polymer battery inside physical space is utilized more and more. However, the battery can be gaseous because of inside chemical reaction production in life cycle, and the inside available gas storage space of battery does not be along with the promotion of laminate polymer battery's capacity and be the proportional increase to the gas pressure of battery rises fast in the laminate polymer battery use, and the upper and lower layer plastic-aluminum membrane of heat-seal department tears, the damage with higher speed, leads to laminate polymer battery insulating failure, electrolyte leakage scheduling problem. Therefore, it is necessary to check the packaging reliability of the pouch battery to avoid problems such as poor battery insulation.
The packaging reliability of the soft package battery is generally evaluated from the angles of residual aluminum after the aluminum plastic film is punched and formed, the residual thickness of the inner layer thermoplastic resin, the overflow glue appearance and the like, and the actual scene of packaging failure is as follows: the chemical reaction occurs in the battery, and the generated gas leads the packaging part to be gradually opened from the inside so as to lose the packaging effect. The above evaluation method has a great difference from the actual working condition. At present, technicians inject compressed gas into a battery to simulate the situation of packaging failure of the battery in the real use process and quantitatively evaluate the packaging strength of the battery, for example, a chinese patent, "a method and a device for testing the packaging strength of a lithium ion soft package battery", with the publication number CN111735707a, including a substrate, an upper pressing plate, a first clamping member and a second clamping member; the upper pressing plate is arranged above the substrate and is arranged separately from the substrate; the upper pressing plate and the substrate are used for horizontally placing the lithium ion soft package battery to be tested; the upper pressure plate and the substrate can be detachably fixed together through a first clamping piece and a second clamping piece which are arranged at a certain distance; the upper pressing plate is provided with a window plate, and the window plate is positioned between the first clamping piece and the second clamping piece; the technical scheme evaluates the packaging strength of the inflated battery and only evaluates the packaging reliability from a strength angle to have certain limitation.
Disclosure of Invention
In view of this, the utility model aims at providing a device for simulating inspection laminate polymer battery encapsulation reliability to overcome prior art and evaluate the defect of angle limitation to laminate polymer battery encapsulation reliability, through the device to the atmospheric pressure resistance performance after the flexible package encapsulation, gas storage volume and the encapsulation back seal district weak point evaluate.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a device for simulating inspection laminate polymer battery encapsulation reliability, the device includes the upper cover plate, is used for placing model battery's lower apron and admission line subassembly, the upper cover plate is equipped with the installation window of admission line subassembly, model battery fixes the upper cover plate with down between the apron, be equipped with the air inlet on the model battery, the air inlet with the admission line subassembly is connected. The upper cover plate is provided with the mounting window, so that the air inlet pipeline assembly is communicated to an air inlet of the model battery, and the inflation process is simulated. The gas is used for inflating the model battery through the gas inlet pipeline assembly at a small gas flow until the battery is deflated or broken, and simultaneously, the internal gas pressure of the model battery in the inflating process is detected so as to evaluate the gas pressure resistance and the gas storage capacity of the packaged flexible package, and the weak point of the packaged sealing area is judged from the broken point of the battery. The model battery can be detachably fixed between the upper cover plate and the lower cover plate, and is convenient to replace.
Preferably, the model battery is provided with model battery bolt holes around the air inlet, and the model battery is connected with the air inlet pipeline assembly through bolts. The bolt connection is detachable, so that the model battery can be conveniently replaced after inspection.
Preferably, the model battery is internally provided with a battery cell simulator. The model battery adopts a battery packaged by an aluminum plastic film composite material which is commonly used at present, and the battery cell analog body is subjected to punch forming to form a top sealing area and a side sealing area.
Preferably, the electric core simulation body is provided with an air inlet hole, a bolt hole, an annular groove, a gas flow channel and an annular sealing gasket arranged in the annular groove, the gas flow channel is connected with the air inlet hole and distributed in the electric core simulation body in a radiation mode around the air inlet hole, the annular groove surrounds the air inlet hole, the bolt hole of the electric core simulation body is distributed on the periphery of the annular groove, the air inlet hole corresponds to the position of an air inlet of the model battery, and the bolt hole of the electric core simulation body corresponds to the position of the bolt hole of the model battery. The cooperation of the annular groove and the annular sealing gasket enhances the air tightness between the air inlet hole and the air inlet of the model battery. The gas flow channel is distributed in the cell simulation body in a radiation mode from the gas inlet hole, gas flows to the gas flow channel uniformly from the gas inlet hole after inflation, the gas flow channel is used for detecting the rupture position of the battery after inflation, and the weak point of the sealing area after encapsulation is judged.
Preferably, the depth of the annular groove is less than the thickness of the annular gasket. The depth of the groove is smaller than the thickness of the annular gasket, so that the good sealing and no air leakage of the joint of the battery model and the flange plate on the air inlet pipeline assembly can be ensured.
Preferably, the air inlet pipeline assembly comprises a flange, an air inlet pipeline, a flow meter and an air inlet valve, and the flange is connected with the model battery through bolts. Through ring flange and model battery bolted connection, can dismantle, change the model battery after the inspection of being convenient for. The flowmeter is used for adjusting the air inlet flow, and the pressure sensor detects the pressure of the air path.
Preferably, the upper cover plate is provided with a through hole, the lower cover plate is provided with a through hole, the upper cover plate and the lower cover plate are fixed through a through hole bolt, and the bolt is convenient to fix and detach.
Preferably, the length of one side of the upper cover plate and the length of the other side of the lower cover plate are the same as the length of the side sealing area of the model battery, and the length of the other side of the upper cover plate and the length of the other side of the lower cover plate are greater than the length of the top sealing area of the model battery. One side length of the upper cover plate and the lower cover plate is larger than the top sealing area of the model battery, so that the cover plate is provided with through holes for bolt fixing, dismounting and replacing the model battery.
Therefore, the utility model discloses following beneficial effect has: (1) The device enables gas to inflate the model battery through the gas inlet pipeline assembly at a small gas flow rate until the battery is deflated or broken, can detect the internal gas pressure of the model battery in the inflation process at the same time, is used for evaluating the gas pressure resistance and the gas storage capacity after the flexible package is packaged, judges the weak point of a sealed area after the package is judged from the broken point of the battery, and inspects the reliability of the flexible package battery after the package from different angles; (2) The upper cover plate and the lower cover plate are used for fixing the model battery through the through hole by bolts, and the air inlet pipeline assembly is connected with the model battery through the flange plate by bolts and can be detachably fixed, so that the model battery can be conveniently replaced, and the packaging reliability of different batteries can be verified; (3) The annular groove and the annular sealing gasket which are arranged on the electric core simulation body are matched to enhance the air tightness between the air inlet and the air inlet of the model battery, and the depth of the groove is smaller than the thickness of the annular gasket, so that the good sealing and air leakage prevention of the joint of the battery model and the flange plate on the air inlet pipeline assembly can be ensured.
Drawings
Fig. 1 is an assembly diagram of the present invention.
Fig. 2 is a schematic structural diagram of an electrical core simulator of the present invention.
Fig. 3 is a schematic structural diagram of the present invention.
In the figure: the battery cell simulation device comprises an upper cover plate 11, a through hole 111, a mounting window 112, a lower cover plate 12, a model battery 13, a top sealing area 131, a side sealing area 132, an air inlet 133, a model battery bolt hole 134, an air inlet pipeline assembly 14, a flange plate 141, an air inlet pipeline 142, a flow meter 143, an air inlet valve 144, a pressure sensor 145, a battery cell simulation body 15, an air inlet hole 151, a battery cell simulation body bolt hole 152, an annular groove 153, a gas flow channel 154 and an annular sealing gasket 155.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description.
As shown in FIGS. 1-3, a device for simulating and checking the packaging reliability of a soft package battery comprises an upper cover plate 11, a lower cover plate 12 and an air inlet pipeline assembly 14, wherein the lower cover plate is used for placing a model battery 13, the upper cover plate is provided with an installation window 112 of the air inlet pipeline assembly, the model battery is fixed between the upper cover plate and the lower cover plate, the model battery is provided with an air inlet 133, and the air inlet is connected with the air inlet pipeline assembly. The upper cover plate is provided with the mounting window, so that the air inlet pipeline assembly is communicated to the air inlet of the model battery, the inflation process can be simulated, the process of generating gas through chemical reaction of the soft package battery is simulated, and the air pressure, flow and other parameters of the process are detected to judge the packaging reliability.
Preferably, in order to conveniently and detachably replace the model battery after the inspection, bolt holes 134 are formed in the model battery around the air inlet, and the model battery is connected with the air inlet pipeline assembly through bolts.
Preferably, at present, the battery is generally packaged by using an aluminum-plastic film composite material, and a battery cell simulator 15 is arranged in the model battery and is formed by punching the aluminum-plastic film composite material.
Specifically, as shown in fig. 2, in order to enhance the air tightness of the connection between the air inlet of the device and the model battery, the electric core simulation body is provided with an air inlet 151, an electric core simulation body bolt hole 152, an annular groove 153, a gas flow channel 154 and an annular sealing gasket 155 arranged in the annular groove, the gas flow channel is connected with the air inlet and is distributed in the electric core simulation body around the air inlet in a radiation manner, the annular groove surrounds the air inlet, the electric core simulation body bolt hole is distributed at the periphery of the annular groove, the air inlet corresponds to the position of the air inlet of the model battery, and the electric core simulation body bolt hole corresponds to the position of the model battery bolt hole. The cooperation of the annular groove and the annular sealing gasket enhances the air tightness between the air inlet hole and the air inlet of the model battery. The gas flow channel is distributed in the cell simulation body in a radiation mode from the gas inlet hole, gas flows to the gas flow channel uniformly from the gas inlet hole after inflation, the gas flow channel is used for detecting the rupture position of the battery after inflation, and the weak point of the sealing area after encapsulation is judged. Furthermore, the depth of the annular groove is smaller than the thickness of the annular gasket, so that the joint of the battery model and the flange plate on the air inlet pipeline assembly is well sealed and air-tight.
Preferably, the inlet manifold assembly includes a flange 141, inlet manifold 142, flow meter 143 and inlet valve 144, the flange being bolted to the model cell. Through-hole through the ring flange and the bolt hole bolted connection of model battery belong to and can dismantle fixedly, are convenient for change the model battery, verify the encapsulation reliability of different batteries.
Preferably, in order to facilitate replacement, fixation and disassembly of the replacement model battery, the upper cover plate and the lower cover plate are provided with through holes 111, and the upper cover plate and the lower cover plate are fixed by bolts. Further, the upper and lower cap plates have a length of one side identical to that of the side sealing region 132 of the model battery and a length of the other side greater than that of the top sealing region 131 of the model battery.
The installation process of the device is as follows: and punching the cell simulator by using an aluminum plastic film composite material, sequentially carrying out top sealing and side sealing to form a model battery, and arranging an air inlet hole, a bolt hole, an annular groove and a gas flow passage. And the through holes are arranged between the upper cover plate and the lower cover plate, and the through holes of the upper cover plate and the lower cover plate are fixed by bolts. An annular sealing gasket is arranged in an annular groove of the model battery, an air inlet pipeline of the air inlet assembly pipeline assembly penetrates through an installation window of the upper cover plate and is connected with a spiral hole bolt of the model battery through a through hole of the flange plate, and installation is completed.
The simulation test process of the device comprises the following steps: the gas is used for inflating the model battery through the gas inlet pipeline assembly at a small gas flow until the battery is deflated or broken, the internal gas pressure of the model battery can be detected in the process, the gas pressure resistance and the gas storage capacity of the packaged flexible package can be calculated and measured by using parameters such as flow, gas pressure and the like, and the weak point of the sealing area of the packaged flexible package can be judged from the broken point of the battery. Therefore, the device realizes the reliability of the packaged soft package battery from different angles. After the inspection is finished, the model battery can be disassembled from the upper cover plate and the lower cover plate, a new battery is replaced, and the work is continued.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. The utility model provides a device for simulating inspection laminate polymer battery encapsulation reliability, a serial communication port, the device includes upper cover plate (11), lower apron (12) and admission line subassembly (14) that are used for placing model battery (13), the upper cover plate is equipped with the installation admission line subassembly's installation window (112), the model battery is fixed the upper cover plate with between the lower cover plate, be equipped with air inlet (133) on the model battery, the air inlet with the admission line subassembly is connected.
2. The device for simulating and inspecting the packaging reliability of the soft package battery according to claim 1, wherein the model battery is provided with model battery bolt holes (134) around the air inlet, and the model battery is connected with the air inlet pipeline assembly through bolts.
3. The device for simulating and checking the package reliability of the soft package battery according to claim 2, characterized in that the model battery is provided with a cell simulator (15).
4. The device for simulating and inspecting the packaging reliability of the soft package battery according to claim 3, wherein the battery core simulator is provided with an air inlet hole (151), a battery core simulator bolt hole (152), an annular groove (153), a gas flow channel (154) and an annular sealing gasket (155) arranged in the annular groove, the gas flow channel is connected with the air inlet hole, and is distributed in the battery core simulator in a manner of radiating around the air inlet hole, the annular groove surrounds the air inlet hole, the battery core simulator bolt hole is distributed at the periphery of the annular groove, the air inlet hole corresponds to the air inlet position of the model battery, and the battery core simulator bolt hole corresponds to the bolt hole position of the model battery.
5. The device for simulating the inspection of the package reliability of the soft package battery according to the claim 4, characterized in that the depth of the annular groove is smaller than the thickness of the annular sealing gasket.
6. The device for simulating the inspection of the package reliability of the pouch battery according to claim 2, wherein the air inlet pipe assembly comprises a flange (141), an air inlet pipe (142), a flow meter (143), an air inlet valve (144) and a pressure sensor (145), and the flange is bolted with the model battery.
7. The device for simulating and checking the packaging reliability of the soft package battery according to the claim 1 is characterized in that the upper cover plate and the lower cover plate are provided with through holes (111), and the upper cover plate and the lower cover plate are fixed through bolts.
8. The device for simulating the inspection of the package reliability of the pouch battery according to claim 7, wherein the length of one side of the upper cover plate and the lower cover plate is the same as that of the side sealing area (132) of the model battery, and the length of the other side is greater than that of the top sealing area (131) of the model battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221222072.7U CN218036121U (en) | 2022-05-20 | 2022-05-20 | Device for simulating and testing packaging reliability of soft package battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221222072.7U CN218036121U (en) | 2022-05-20 | 2022-05-20 | Device for simulating and testing packaging reliability of soft package battery |
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| Publication Number | Publication Date |
|---|---|
| CN218036121U true CN218036121U (en) | 2022-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221222072.7U Active CN218036121U (en) | 2022-05-20 | 2022-05-20 | Device for simulating and testing packaging reliability of soft package battery |
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| Country | Link |
|---|---|
| CN (1) | CN218036121U (en) |
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- 2022-05-20 CN CN202221222072.7U patent/CN218036121U/en active Active
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