2 thoughts on “What is the role of polymer lithium battery aluminum plastic film?”
Vicky
I will give you a summary: The structure and classification of soft packaging materials
The polymer Lithium -ion battery core inner packaging materials may have multiple classification methods in different ways. However, the most common method is the following two classification methods: whether it is required to categorize the category and whether the endometrium has a performance classification of direct thermal seal with the metal electrode.
I. Whether it is needed to be divided into cold stamping molding membrane and non -cold stamping molding membrane.
The typical structure of the cold rinse film is: i, ny15-25/al40-60/npp50-70 Ⅱ, PET12/NY15-25/Al40-60/60/ NPP50-70 III, NY15-25/AL40-60/NPE50-70 ⅳ, PET12/NY15/AL26-30/NPE50-70 n non-cold stamping molding membrane film The structure is: I, ny15-25/al26-30/npp50-70 Ⅱ, PET12/AL26-30/NPP50-70 III, NY15-25/AL26-30/NPE50 50 -70 , PET12/AL26-30/NPE50-70 ⅵ, PET12/NY15/AL26-30/NPP50-70
Note: NPP50-70 refers to heat The sealing layer is a special multi -functional layer of the PP class, which is characterized by not directly sealed with metals. NPE50-70 refers to the special multi-functional layer of the thermal seal layer as a modified polyethylene. It is characterized by the direct sealed seal with the metal electrode. rnrn 二、 按内膜热封层是否具有与金属电极热封的性能分为：rnrn 1、可直接与金属电极热封膜：r n ny15-25/Al26-30/NPE50-70 PET12/AL26-30/NPE50-70 PET12/NY15/AL26-30/NPE50-70 NY15-25/AL40- 60/nPE50-70
2. Do not directly seal with metal electrode heat seal: NY15-25/AL26-30/NPP50-70 PET12/AL26-30/NPP5050 -70rn PET12/NY15/AL26-30/NPP50-70rn NY15-25/AL40-60/NPP50-70rnrn软包装材料的技术要求rn Due to the successful development of the lithium -ion battery in the polymer in the laboratory, the mass production is only three or four years old. The development and development of the packaging film is later than the battery. The manufacturers are minimal, and there is no standard to follow. The battery packaging film developed by our company is the communication and cooperation of lithium -ion battery factories (Xiamen Baolong Industry, Huizhou TCL Almighty, Dongguan New Energy ATL, Shunde Electronics, etc.) with strong domestic communication and cooperation over two years of communication and cooperation Some basic requirements for product quality. These foundation requirements have become the technical indicators of the current product. Some of them can be quantitatively described and can be detected by appropriate methods, but some cannot be detected by advanced methods. Some requirements can only be described qualitatively, and the appropriate method can be found. In addition, with the improvement of the battery plant process and the improvement of technology and the improvement of battery performance, many indicators also need to change accordingly, especially with the deepening of the electrical performance of the battery film itself, it will also propose updated technical requirements Essence These requirements will be an important part of the future technical standards. Let's introduce the existing technical requirements of the product below.
. appearance: Pleurotus, foreign body, foreign body, adhesion, uneven coating, separation between composite guides and obvious damage, bubbles, wrinkles, and dirt.
. The thickness of the composite membrane: within 150U of the composite film (forming), within 120U (non -forming).
1. The depth of cold stress is 3-8mm 2. No layer, rupture, and no allowed, broken, ruptured, and no allowed Point -pores leak 3. Staginal remaining, deformation A u003C50
5. Thermal seal intensity: When the endometrium is soaked by electrolytes and penetrates into three mouths (about 12 days), The sealing strength is> 40U/15mm.
. The performance of the water soaked: The finished battery is soaked in the warm water for 20 days and the seal is tightly sealed, which does not produce drums. rnrn 七、电绝缘性：热封极片电阻率＞1×107s2·cm-1rnrn 电极与复合膜铝箔间的电阻率rn , endometrial puncture resistance: The endometrium can withstand the metal electrodes of the metal electrodes during the edge of the batteries and thermal electrodes of the metal in the middle of the film.
The finished corrosion rate and short circuit rate u003C1 ‰.
. The stability of the electrolyte resistance: the electrolyte will dissolve, dissolve and absorb the inner composite membrane, especially the membrane layer adhesive or adhesive resin. Foil, causing the separation of AL foil from the endometrium, which causes leakage or qi, causing the battery to be scrapped. During the three seals, the inter -layer peeling intensity within the AL foil is 2.5N/15mm, thereby ensuring the tight and firmness of the seal.
Ten, electrical performance: Electrical performance indicators are further exploring and exploring. Manufacturers are temporarily confidential and unwilling to disclose in detail. The essence of electrical performance is the impact of packaging membrane on the battery filling ratio. This impact includes electrical insulation, the impact on the balance of the electrolyte group, and the composite film, especially the AL foil, is soaked by the electrolyte in the electrolyte Wait.
eleven, other: the thickness deviation of the membrane, the size deviation of the size, the heat -seal resistance, the initial peeling intensity of the original membrane layer, the broken strength (> 100N), the elongation of the break (> 35% (> 35% )Wait.
Anyway: There are many indicators required by this film, and the most important indicators are also different from ordinary composite membranes. ④The stability of electrolyte resistance; ⑤ electrical performance (including insulation).
① Extremely high obstruction; ② Good cold voltage moldability; ③ Stranging; ④ Stability of electrolyte resistance; ⑤ electrical performance (including insulation). . Whether the cold stamping molding is divided into cold stamping molding membrane and non -cold stamping molding membrane.
The typical structure of cold rushing film is: i, NY15-25/AL40-60/NPP50-70 Ⅱ, PET12/NY15-25/AL40-60/NPP50-- 70 III, NY15-25/AL40-60/NPE50-70 ⅳ, PET12/NY15/AL26-30/NPE50-70 n n R ni, NY15-25/AL26-30/NPP50-70 III, PET12/AL26-30/NPP50-70 III, NY15-25/AL26-30/NPE50-70 ⅴ PET12/AL26-30/NPE50-70 ⅵ, PET12/NY15/AL26-30/NPP50-70
Note: NPP50-70 refers The characteristic is that it cannot be directly sealed with the metal. NPE50-70 refers to the special multi-functional layer of the thermal seal layer as a modified polyethylene. It is characterized by the direct sealed sealed by the metal electrode.
. Whether the endometrium heat seal layer has the performance of thermal seal with the metal electrode:
1, the direct and metal electrode thermal sealing membrane: NY15 -25/Al26-30/NPE50-70 PET12/AL26-30/NPE50-70 R Y15/AL26-30/NPE50-70 NY15-25/AL40-60/NPE50-70
2, can not be directly sealed with metal electrodes: NY15-25/AL26-30/NPP50-70 PET12/AL26-30/NPP50-70 Y15/NY15 /Al26-30/NPP50-70 NY15-25/AL40-60/NPP50-70
I will give you a summary:
The structure and classification of soft packaging materials
The polymer Lithium -ion battery core inner packaging materials may have multiple classification methods in different ways. However, the most common method is the following two classification methods: whether it is required to categorize the category and whether the endometrium has a performance classification of direct thermal seal with the metal electrode.
I. Whether it is needed to be divided into cold stamping molding membrane and non -cold stamping molding membrane.
The typical structure of the cold rinse film is:
i, ny15-25/al40-60/npp50-70
Ⅱ, PET12/NY15-25/Al40-60/60/ NPP50-70
III, NY15-25/AL40-60/NPE50-70
ⅳ, PET12/NY15/AL26-30/NPE50-70
n non-cold stamping molding membrane film The structure is:
I, ny15-25/al26-30/npp50-70
Ⅱ, PET12/AL26-30/NPP50-70
III, NY15-25/AL26-30/NPE50 50 -70
, PET12/AL26-30/NPE50-70
ⅵ, PET12/NY15/AL26-30/NPP50-70
Note: NPP50-70 refers to heat The sealing layer is a special multi -functional layer of the PP class, which is characterized by not directly sealed with metals.
NPE50-70 refers to the special multi-functional layer of the thermal seal layer as a modified polyethylene. It is characterized by the direct sealed seal with the metal electrode. rnrn 二、 按内膜热封层是否具有与金属电极热封的性能分为：rnrn 1、可直接与金属电极热封膜：r n ny15-25/Al26-30/NPE50-70
PET12/AL26-30/NPE50-70
PET12/NY15/AL26-30/NPE50-70
NY15-25/AL40- 60/nPE50-70
2. Do not directly seal with metal electrode heat seal:
NY15-25/AL26-30/NPP50-70
PET12/AL26-30/NPP5050 -70rn PET12/NY15/AL26-30/NPP50-70rn NY15-25/AL40-60/NPP50-70rnrn软包装材料的技术要求rn
Due to the successful development of the lithium -ion battery in the polymer in the laboratory, the mass production is only three or four years old. The development and development of the packaging film is later than the battery. The manufacturers are minimal, and there is no standard to follow. The battery packaging film developed by our company is the communication and cooperation of lithium -ion battery factories (Xiamen Baolong Industry, Huizhou TCL Almighty, Dongguan New Energy ATL, Shunde Electronics, etc.) with strong domestic communication and cooperation over two years of communication and cooperation Some basic requirements for product quality. These foundation requirements have become the technical indicators of the current product. Some of them can be quantitatively described and can be detected by appropriate methods, but some cannot be detected by advanced methods. Some requirements can only be described qualitatively, and the appropriate method can be found. In addition, with the improvement of the battery plant process and the improvement of technology and the improvement of battery performance, many indicators also need to change accordingly, especially with the deepening of the electrical performance of the battery film itself, it will also propose updated technical requirements Essence These requirements will be an important part of the future technical standards. Let's introduce the existing technical requirements of the product below.
. appearance: Pleurotus, foreign body, foreign body, adhesion, uneven coating, separation between composite guides and obvious damage, bubbles, wrinkles, and dirt.
. The thickness of the composite membrane: within 150U of the composite film (forming), within 120U (non -forming).
three, obstruction:
1. Water steam transmission u003C10-4g/m2 · d.1atm
2. Oxygen passage u003C0.1cm3// M2 · D.1atm
. Four, cold stamping molding;
1. The depth of cold stress is 3-8mm
2. No layer, rupture, and no allowed, broken, ruptured, and no allowed Point -pores leak
3. Staginal remaining, deformation A u003C50
5. Thermal seal intensity: When the endometrium is soaked by electrolytes and penetrates into three mouths (about 12 days), The sealing strength is> 40U/15mm.
. The performance of the water soaked: The finished battery is soaked in the warm water for 20 days and the seal is tightly sealed, which does not produce drums. rnrn 七、电绝缘性：热封极片电阻率＞1×107s2·cm-1rnrn 电极与复合膜铝箔间的电阻率rn
, endometrial puncture resistance: The endometrium can withstand the metal electrodes of the metal electrodes during the edge of the batteries and thermal electrodes of the metal in the middle of the film.
The finished corrosion rate and short circuit rate u003C1 ‰.
. The stability of the electrolyte resistance: the electrolyte will dissolve, dissolve and absorb the inner composite membrane, especially the membrane layer adhesive or adhesive resin. Foil, causing the separation of AL foil from the endometrium, which causes leakage or qi, causing the battery to be scrapped. During the three seals, the inter -layer peeling intensity within the AL foil is 2.5N/15mm, thereby ensuring the tight and firmness of the seal.
Ten, electrical performance: Electrical performance indicators are further exploring and exploring. Manufacturers are temporarily confidential and unwilling to disclose in detail. The essence of electrical performance is the impact of packaging membrane on the battery filling ratio. This impact includes electrical insulation, the impact on the balance of the electrolyte group, and the composite film, especially the AL foil, is soaked by the electrolyte in the electrolyte Wait.
eleven, other: the thickness deviation of the membrane, the size deviation of the size, the heat -seal resistance, the initial peeling intensity of the original membrane layer, the broken strength (> 100N), the elongation of the break (> 35% (> 35% )Wait.
Anyway: There are many indicators required by this film, and the most important indicators are also different from ordinary composite membranes. ④The stability of electrolyte resistance; ⑤ electrical performance (including insulation).
① Extremely high obstruction; ② Good cold voltage moldability; ③ Stranging; ④ Stability of electrolyte resistance; ⑤ electrical performance (including insulation).
. Whether the cold stamping molding is divided into cold stamping molding membrane and non -cold stamping molding membrane.
The typical structure of cold rushing film is:
i, NY15-25/AL40-60/NPP50-70
Ⅱ, PET12/NY15-25/AL40-60/NPP50-- 70
III, NY15-25/AL40-60/NPE50-70
ⅳ, PET12/NY15/AL26-30/NPE50-70
n n R ni, NY15-25/AL26-30/NPP50-70
III, PET12/AL26-30/NPP50-70
III, NY15-25/AL26-30/NPE50-70
ⅴ PET12/AL26-30/NPE50-70
ⅵ, PET12/NY15/AL26-30/NPP50-70
Note: NPP50-70 refers The characteristic is that it cannot be directly sealed with the metal.
NPE50-70 refers to the special multi-functional layer of the thermal seal layer as a modified polyethylene. It is characterized by the direct sealed sealed by the metal electrode.
. Whether the endometrium heat seal layer has the performance of thermal seal with the metal electrode:
1, the direct and metal electrode thermal sealing membrane:
NY15 -25/Al26-30/NPE50-70
PET12/AL26-30/NPE50-70 R
Y15/AL26-30/NPE50-70
NY15-25/AL40-60/NPE50-70
2, can not be directly sealed with metal electrodes:
NY15-25/AL26-30/NPP50-70
PET12/AL26-30/NPP50-70
Y15/NY15 /Al26-30/NPP50-70
NY15-25/AL40-60/NPP50-70