TWI598207B - Coating die - Google Patents
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- TWI598207B TWI598207B TW104142983A TW104142983A TWI598207B TW I598207 B TWI598207 B TW I598207B TW 104142983 A TW104142983 A TW 104142983A TW 104142983 A TW104142983 A TW 104142983A TW I598207 B TWI598207 B TW I598207B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
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Description
本發明是有關於一種塗佈模具，且特別是有關於一種用於形成膜層結構的塗佈模具設計。 This invention relates to a coating die, and more particularly to a coating die design for forming a film structure.
在各種技術領域中，常需要一(上)材料層完全覆蓋另一(下)材料層之上表面與側表面的多層結構。然而，目前技術仍有需要改善的問題。例如凹版印刷只能進行全幅塗佈，無法達到基材的邊緣留白控制(edge control)。浸沾式塗佈僅能進行雙面同時塗佈，無法只在單一面進行塗佈，也無法達到邊緣留白控制，且塗膜厚度控制不易。一般狹縫式塗佈中，上材料層無法完全覆蓋下材料層。 In various fields of technology, it is often desirable for a (upper) layer of material to completely cover the multilayer structure of the upper and side surfaces of another (lower) layer of material. However, there are still problems in the current technology that need to be improved. For example, gravure printing can only be performed on a full-width coating, and the edge control of the substrate cannot be achieved. Dip-coating can only be applied simultaneously on both sides, and it is not possible to apply only on a single side, and it is impossible to achieve edge whitening control, and coating film thickness control is not easy. In general slit coating, the upper material layer cannot completely cover the lower material layer.
當無法符合需求的結構應用至產品(例如電池的極板結構)時，會使得產品效能降低，甚至使用上會有安全疑慮。 When a structure that does not meet the requirements is applied to the product (such as the plate structure of the battery), the performance of the product is lowered, and there are safety concerns even in use.
本揭露係有關於一種塗佈模具。 The disclosure relates to a coating die.
根據本揭露之一實施例，提出一種塗佈模具，用以塗佈塗料在基材上之材料層上以形成一塗層。材料層具有上表面、右側表面及相對的下表面與左側表面。塗佈模具包括用以排
出塗料的一狹縫。狹縫的一總寬度值(Q)包括一中間寬度值(A)、一左寬度值(Y1)與一右寬度值(Y2)，分別對應材料層之上表面的總寬度值、超出材料層之左上端點的左部分寬度值與超出材料層之右上端點的右部分寬度值。Q=A+Y1+Y2。塗佈模具的狹縫符合關係式：
h為材料層的一厚度值。X1為材料層的左側表面投影在下表面之寬度值，等於。θ 1為材料層之左側表面與下表面之間的夾角。0°<θ 1 90°。X2為材料層的右側表面投影在下表面之寬度值，等於。θ 2為材料層之右側表面與下表面之間的夾角。0°<θ 2 90°。w為塗層之一厚度值。 h is a thickness value of the material layer. X 1 is the width value of the left side surface of the material layer projected on the lower surface, equal to . θ 1 is the angle between the left side surface and the lower surface of the material layer. 0°< θ 1 90°. X 2 is the width value of the right side surface of the material layer projected on the lower surface, equal to . θ 2 is the angle between the right side surface and the lower surface of the material layer. 0°< θ 2 90°. w is the thickness value of one of the coatings.
為了對本揭露之上述及其他方面有更佳的瞭解，下文特舉較佳實施例，並配合所附圖式，作詳細說明如下： In order to better understand the above and other aspects of the present disclosure, the preferred embodiments are described below in detail with reference to the accompanying drawings.
102‧‧‧基材 102‧‧‧Substrate
103‧‧‧材料層的上表面 103‧‧‧ Upper surface of the material layer
104‧‧‧材料層 104‧‧‧Material layer
105A‧‧‧材料層的左側表面 105A‧‧‧ left side surface of the material layer
105B‧‧‧材料層的右側表面 105B‧‧‧The right side surface of the material layer
106‧‧‧輥輪 106‧‧‧Roller
107A‧‧‧材料層的左上端點 107A‧‧‧ upper left end of the material layer
107B‧‧‧材料層的右上端點 107B‧‧‧ upper right end of the material layer
108‧‧‧塗佈模具 108‧‧‧Application mould
110‧‧‧凹槽 110‧‧‧ Groove
111A‧‧‧塗層的左底表面 111A‧‧‧The left bottom surface of the coating
111B‧‧‧塗層的右底表面 111B‧‧‧The bottom right surface of the coating
112‧‧‧狹縫 112‧‧‧slit
113‧‧‧材料層的下表面 113‧‧‧The lower surface of the material layer
114‧‧‧塗料 114‧‧‧ paint
116‧‧‧塗層 116‧‧‧ Coating
A‧‧‧中間寬度值 A‧‧‧ intermediate width value
D1、D2‧‧‧寬度值 D 1 , D 2 ‧‧ ‧ width value
h‧‧‧厚度值 H‧‧‧thickness value
w‧‧‧厚度值 W‧‧‧thickness value
X1‧‧‧左側表面投影在下表面之寬度值 X 1 ‧‧‧The width of the left side surface projected on the lower surface
X2‧‧‧右側表面投影在下表面之寬度值 X 2 ‧‧‧The width of the right side surface projected on the lower surface
Y1‧‧‧左寬度值 Y 1 ‧‧‧left width value
Y2‧‧‧右寬度值 Y 2 ‧‧‧right width value
θ1‧‧‧左側表面與下表面之間的夾角 θ 1 ‧‧‧An angle between the left and lower surfaces
θ2‧‧‧右側表面與下表面之間的夾角 θ 2 ‧‧‧An angle between the right side surface and the lower surface
λ1、λ2‧‧‧夾角 λ 1 , λ 2 ‧‧‧ angle
第1圖繪示根據一實施例之塗佈方法示意圖。 FIG. 1 is a schematic view showing a coating method according to an embodiment.
第2圖繪示根據一實施例之塗佈方法示意圖。 FIG. 2 is a schematic view showing a coating method according to an embodiment.
第3圖繪示根據一實施例之基材、材料層、塗層與塗佈模具。 Figure 3 illustrates a substrate, material layer, coating, and coating die in accordance with an embodiment.
第4圖繪示根據一比較例之塗佈結果示意圖。 Fig. 4 is a view showing the results of coating according to a comparative example.
第5圖繪示根據一比較例之塗佈結果示意圖。 Fig. 5 is a schematic view showing the coating results according to a comparative example.
在本揭露中，為求簡潔，相同的元件將以相同的符號表示。 In the present disclosure, the same elements will be denoted by the same symbols for the sake of brevity.
請參照第1圖與第2圖，其繪示根據實施例之塗佈方法示意圖。可撓式的基材102上配置有材料層104，並可在塗佈機的輥輪106(或背膠輪)上移動。塗佈模具108可包括互相連通之凹槽110與狹縫112。被幫浦推入凹槽110中的塗料114往狹縫112流動，並從狹縫112排出而塗佈在基材102上的材料層104上以形成塗層116。 Please refer to FIG. 1 and FIG. 2 , which are schematic diagrams showing a coating method according to an embodiment. The flexible substrate 102 is provided with a layer of material 104 and is movable on the rollers 106 (or the backing wheel) of the coater. The coating die 108 can include grooves 110 and slits 112 that communicate with each other. The coating 114 pushed into the groove 110 by the pump flows toward the slit 112 and is discharged from the slit 112 to be coated on the material layer 104 on the substrate 102 to form the coating 116.
實施例中，塗佈模具108的狹縫112是根據配置在基材102上的材料層104做設計，藉此均勻排出塗料114在基材102上的材料層104上，並使得形成的塗層116能包覆材料層104的所有上表面及側表面，亦即塗層116能完全覆蓋材料層104的寬度範圍。塗層116亦能從材料層104連續延伸至外側的部分基材102上。 In an embodiment, the slit 112 of the coating die 108 is designed in accordance with a layer of material 104 disposed on the substrate 102 whereby the coating 114 is uniformly discharged over the layer of material 104 on the substrate 102 and the resulting coating is formed. 116 can cover all of the upper and side surfaces of material layer 104, i.e., coating 116 can completely cover the width of material layer 104. The coating 116 can also extend continuously from the layer of material 104 to a portion of the substrate 102 on the outside.
請參照第3圖，其繪示根據實施例之基材102、材料層104、塗層116與具有狹縫112的塗佈模具108。一實施例中，材料層104是以塗佈的方式配置在基材102上，然本揭露並不限於此，材料層104亦可以其他合適的方式配置在基材102上。 Referring to FIG. 3, a substrate 102, a material layer 104, a coating 116, and a coating die 108 having a slit 112 are illustrated in accordance with an embodiment. In one embodiment, the material layer 104 is disposed on the substrate 102 in a coating manner. However, the disclosure is not limited thereto, and the material layer 104 may be disposed on the substrate 102 in other suitable manners.
狹縫112的總寬度值Q包括中間寬度值A、左寬度值Y1與右寬度值Y2。中間寬度值A對應材料層104之上表面103 的總寬度值。左寬度值Y1對應超出材料層104之左上端點107A的左部分寬度值。右寬度值Y2對應超出材料層104之右上端點107B的右部分寬度值。Q=A+Y1+Y2。 The total width value Q of the slit 112 includes an intermediate width value A, a left width value Y 1 and a right width value Y 2 . The intermediate width value A corresponds to the total width value of the upper surface 103 of the material layer 104. The left width value Y 1 corresponds to a left portion width value that is beyond the upper left end point 107A of the material layer 104. The right width value Y 2 corresponds to a right portion width value that exceeds the upper right end point 107B of the material layer 104. Q=A+Y 1 +Y 2 .
塗佈模具108的狹縫112符合以下關係式(I)、(II)：
上述關係式(I)、(II)中，h為材料層104之厚度值。舉例來說，當材料層104的厚度為40μm時，h厚度值以40表示。類似概念亦可應用至其他類似用語，將不再重複贅述。θ1為材料層104之左側表面105A與下表面113之間的夾角。0°<θ1 90°。X1為材料層104的左側表面105A投影在下表面113之寬度值，等於。θ2為材料層104之右側表面105B與下表面113之間的夾角)。0°<θ 2 90°。X2為材料層104之右側表面105B投影在下表面113之寬度值，等於。w為塗層116之厚度值。一實施例中，完整且連續塗佈在材料層104之上表面103與側表面(左側表面105A、右側表面105B)上的塗層116具有均一的厚度。上述之寬度或厚度之數值單位可為微米(μm)。 In the above relational expressions (I) and (II), h is the thickness value of the material layer 104. For example, when the thickness of the material layer 104 is 40 μm , the h thickness value is represented by 40. Similar concepts can be applied to other similar terms and will not be repeated. θ 1 is the angle between the left side surface 105A of the material layer 104 and the lower surface 113. 0°<θ 1 90°. X 1 is the width value of the left side surface 105A of the material layer 104 projected on the lower surface 113, which is equal to . θ 2 is the angle between the right side surface 105B of the material layer 104 and the lower surface 113). 0°< θ 2 90°. X 2 is the width value of the right side surface 105B of the material layer 104 projected on the lower surface 113, which is equal to . w is the thickness value of the coating 116. In one embodiment, the coating 116 completely and continuously coated on the upper surface 103 and the side surfaces (left side surface 105A, right side surface 105B) of the material layer 104 has a uniform thickness. The above numerical values of the width or thickness may be in micrometers ( μm ).
一實施例中，40h100，30w50，50Y1-X1 1000，50Y2-X2 1000。一實施例中，w=30，40h100，100Y1-X1 500，100Y2-X2 500。一實施例中， w=30，h=40，100Y1-X1 500，100Y2-X2 500。一實施例中，w=30，h=70，150Y1-X1 450，150Y2-X2 450。一實施例中，w=30，h=100，200Y1-X1 400，200Y2-X2 400。一實施例中，w=50，40h100，50Y1-X1 1000，50Y2-X2 1000。一實施例中，w=50，h=40，50Y1-X1 800，50Y2-X2 800。一實施例中，w=50，h=70，75Y1-X1 900，75Y2-X2 900。一實施例中，w=50，h=100，100Y1-X1 1000，100Y2-X2 1000。 In one embodiment, 40 h 100,30 w 50,50 Y 1 -X 1 1000,50 Y 2 -X 2 1000. In one embodiment, w=30,40 h 100,100 Y 1 -X 1 500,100 Y 2 -X 2 500. In one embodiment, w=30, h=40,100 Y 1 -X 1 500,100 Y 2 -X 2 500. In one embodiment, w=30, h=70,150 Y 1 -X 1 450,150 Y 2 -X 2 450. In one embodiment, w=30, h=100,200 Y 1 -X 1 400,200 Y 2 -X 2 400. In one embodiment, w=50,40 h 100,50 Y 1 -X 1 1000,50 Y 2 -X 2 1000. In one embodiment, w=50, h=40, 50 Y 1 -X 1 800,50 Y 2 -X 2 800. In one embodiment, w=50, h=70,75 Y 1 -X 1 900,75 Y 2 -X 2 900. In one embodiment, w=50, h=100, 100 Y 1 -X 1 1000,100 Y 2 -X 2 1000.
塗層116的總寬度值B等於塗層116之上表面103的寬度值A、材料層104之左側表面105A投影在下表面113之寬度值X1、材料層104之右側表面105B投影在下表面113之寬度值X2、塗層116之左底表面111A的寬度值D1與塗層116之右底表面111B的寬度值D2的總和。實施例中，塗層116的總寬度值B是略小於狹縫112的總寬度值Q。 The total width value B of the coating 116 is equal to the width value A of the upper surface 103 of the coating 116, the left side surface 105A of the material layer 104 is projected to the width value X 1 of the lower surface 113, and the right side surface 105B of the material layer 104 is projected onto the lower surface 113. The width value X 2 , the sum of the width value D 1 of the left bottom surface 111A of the coating 116 and the width value D 2 of the right bottom surface 111B of the coating 116. In an embodiment, the total width value B of the coating 116 is slightly less than the total width value Q of the slit 112.
結構並不限於左右對稱的設計，亦可視產品實際需求使用非對稱的設計。舉例來說，在材料層左右不對稱的情況下，可適當地使用左右不對稱的塗佈模具狹縫設計，以得到塗層覆蓋材料層之所有上表面及側表面，且塗層具有均一的厚度，或塗層可更進一步從材料層連續延伸至外側的部分基材上。 The structure is not limited to the left-right symmetrical design, and the asymmetric design can also be used depending on the actual needs of the product. For example, in the case where the material layers are asymmetrical left and right, the left and right asymmetric coating die slit designs can be suitably used to obtain all the upper and side surfaces of the coating covering material layer, and the coating has uniformity. The thickness, or coating, can be further extended from the layer of material to a portion of the substrate on the outside.
根據本揭露使用狹縫式塗佈模具的塗佈方法可應用至單面塗佈或雙面塗佈。 The coating method using the slit coating die according to the present disclosure can be applied to one-side coating or double-sided coating.
一實施例中，是以根據實施例之方法製造極板結構，其中請參照第3圖，基材102即為集電體。鄰接在基材102 上的材料層104即為活物層，可用作電池的極板。包覆材料層104的所有上表面103及側表面(左側表面105A、右側表面105B)的塗層116即為安全防護層，例如耐熱的絕緣層或介電質層。一實施例中，集電體的部分上表面可露出安全防護層，亦即，根據實施例之方法在材料層104上塗佈塗層116可留白基材102。 In one embodiment, the electrode structure is fabricated according to the method of the embodiment. Referring to FIG. 3, the substrate 102 is a current collector. Adjacent to substrate 102 The upper material layer 104 is a living layer and can be used as a plate of a battery. The coating 116 of all of the upper surface 103 and the side surfaces (left side surface 105A, right side surface 105B) of the cladding material layer 104 is a safety protective layer such as a heat resistant insulating layer or a dielectric layer. In one embodiment, a portion of the upper surface of the current collector may expose the security shield, that is, coating the coating 116 on the material layer 104 according to the method of the embodiment may leave the substrate 102 blank.
一實施例中，極板結構可應用在電池，例如鋰電池的負極板結構。 In one embodiment, the plate structure can be applied to a battery, such as a negative plate structure of a lithium battery.
舉例來說，集電體(或基材102)可包括鋁(Al)、銅(Cu)或不鏽鋼，或其他導電性高的適合材料。一實施例中例如銅箔。 For example, the current collector (or substrate 102) may comprise aluminum (Al), copper (Cu), or stainless steel, or other suitable materials that are highly conductive. In one embodiment, for example, a copper foil.
活物層(或材料層104)可包括石墨、矽碳或上述之組合。一實施例中，活物層可為利用漿料形成的塗佈層，漿料可包括含有石墨、矽碳或上述之組合的填充物。漿料可進一步包括黏合劑，例如偏二氟乙烯等。漿料可進一步包括溶劑，例如N-甲基吡咯酮(N-methyl-2-pyrrolidone；NMP)。 The living layer (or material layer 104) may comprise graphite, tantalum carbon or a combination of the above. In one embodiment, the living layer may be a coating layer formed using a slurry, and the slurry may include a filler containing graphite, ruthenium carbon, or a combination thereof. The slurry may further include a binder such as vinylidene fluoride or the like. The slurry may further comprise a solvent such as N-methyl-2-pyrrolidone (NMP).
舉例來說，安全防護層(或塗層116)可包含通式為MxOy之氧化物，其中M為Si、Al、Zr、Ti、Mg、Zn、Li、La、Nb、Ta、Ge、Y、Se、B或上述之組合，x是介於1~2，y是介於1~3。一實施例中，安全防護層包括氧化矽。一實施例中，舉例來說，安全防護層可更包含一樹脂，例如偏二氟乙烯(PVDF)、聚壓克力酸(polyacrylic acid)、丁苯橡膠(SBR,Styrene-Butadiene Rubber)、羧甲基纖維素(CMC,carboxymethyl cellulose)、聚醯亞胺(PI,Polyimide)等，可用作黏著劑。氧化物佔安全防護層 0.1wt%~90wt%。安全防護層為介電質材料。 For example, the security layer (or coating 116) may comprise an oxide of the general formula MxOy, where M is Si, Al, Zr, Ti, Mg, Zn, Li, La, Nb, Ta, Ge, Y, Se, B or a combination of the above, x is between 1 and 2, and y is between 1 and 3. In one embodiment, the security shield comprises ruthenium oxide. In one embodiment, for example, the security layer may further comprise a resin such as vinylidene fluoride (PVDF), polyacrylic acid, styrene-butadiene rubber (SBR, Styrene-Butadiene Rubber), carboxy Methylcellulose (CMC), polyimine (PI, Polyimide), etc. can be used as an adhesive. Oxide accounts for safety protection 0.1wt%~90wt%. The safety protection layer is a dielectric material.
實施例中，安全防護層的厚度(可參照第3圖的符號w)可介於0.5μm~10μm。安全防護層超出活物層的寬度(可參照第3圖的符號D1、D2)是介於0.5μm~10mm，或10μm~10mm。安全防護層之外側表面與集電體之上表面之間具有夾角λ1、λ2，0°<λ 1 90°,0°<λ 2 90°。 In the embodiment, the thickness of the safety protective layer (refer to the symbol w in FIG. 3) may be between 0.5 μm and 10 μm. The safety shield extends beyond the width of the living layer (see the symbols D 1 and D 2 in Fig. 3) between 0.5 μm and 10 mm, or 10 μm to 10 mm. The outer side surface of the safety protection layer and the upper surface of the current collector have an angle λ 1 , λ 2 , 0° < λ 1 90°, 0°< λ 2 90°.
根據本揭露之塗佈方法形成的極板結構中，安全防護層足夠地連續覆蓋活物層的所有側表面與上表面，不會影響後續極板結構之焊接導電柄製程，也能提供有效的保護作用，避免電池受外力穿刺與避免高溫受熱時因隔離膜收縮而發生正負極相接觸的短路造成起火燃燒，達到安全效果。 According to the electrode plate structure formed by the coating method of the present disclosure, the safety protective layer sufficiently covers all the side surfaces and the upper surface of the living layer continuously, and does not affect the welding conductive handle process of the subsequent plate structure, and can also provide effective The protection function is to prevent the battery from being puncture by external force and avoiding the short circuit caused by the contact between the positive and negative electrodes due to the shrinkage of the separator when the high temperature is heated, thereby achieving a safety effect.
本揭露的塗佈方法並不限於電池的極板結構，亦可應用在其它需要塗層完全覆蓋材料層之上表面與側表面的結構產品中。 The coating method of the present disclosure is not limited to the electrode plate structure of the battery, and can be applied to other structural products that require the coating to completely cover the upper surface and the side surface of the material layer.
為讓本揭露之上述目的、特徵、和優點能更明顯易懂，下文特舉較佳實施例，並配合所附圖式，作詳細說明如下：極板結構的集電體(或基材102)為15μm銅箔。 The above described objects, features, and advantages of the present invention will become more apparent and understood. ) is 15μm copper foil.
極板結構的活物層(或材料層104)是使用負極漿料塗佈在集電體上形成。其中負極漿料包括填充物(filler)、黏合劑與溶劑。填充物使用石墨化介相瀝青粉末(meso-phase graphite powder(MGP-A)，中鋼碳素化學股份有限公司販售)及導電碳黑材料(conductive additive carbon black；Super-P，由TIMCAL公司製 造)。黏合劑(binder)使用偏二氟乙烯(polyvinylidene fluoride；PVDF 9200，Kureha製造)。石墨化介相瀝青粉末：導電碳黑材料：偏二氟乙烯的重量比為94：1：5。有機溶劑使用N-甲基吡咯酮(N-methyl-2-pyrrolidone；NMP；台灣波律股份有限公司製造)。漿料的固含量約54wt%。漿料的黏度約800cPs。塗佈形成的活物層厚度為30μm~70μm。 The living layer (or material layer 104) of the electrode plate structure is formed by coating the current collector with a negative electrode slurry. The negative electrode slurry includes a filler, a binder, and a solvent. The filler is made of grapho-phase graphite powder (MGP-A), sold by Sinosteel Carbon Chemical Co., Ltd., and conductive additive carbon black (Super-P, by TIMCAL). system Made). As the binder, polyvinylidene fluoride (PVDF 9200, manufactured by Kureha) was used. Graphitized mesophase pitch powder: Conductive carbon black material: the weight ratio of vinylidene fluoride is 94:1:5. As the organic solvent, N-methylpyrrolidone (NMP; manufactured by Taiwan Boeing Co., Ltd.) was used. The solids content of the slurry was about 54% by weight. The viscosity of the slurry is about 800 cPs. The thickness of the living layer formed by coating is 30 μm to 70 μm.
安全防護層(或塗層116)為含矽(Si)成份之塗層。用以形成安全防護層的塗料包含黏著劑偏二氟乙烯(PVDF)、氧化矽粒子(clay)，其中黏著劑：氧化矽粒的重量比為60：40。塗料也包含溶劑二甲基乙醯胺(DMAc)。塗料的固含量為8wt%。塗料的黏度約70cPs。塗佈濕膜厚為20~40μm。 The safety shield (or coating 116) is a coating containing a bismuth (Si) component. The coating used to form the safety protective layer comprises an adhesive of polyvinylidene fluoride (PVDF) and cerium oxide particles, wherein the weight ratio of the adhesive: cerium oxide particles is 60:40. The coating also contained the solvent dimethylacetamide (DMAc). The solid content of the coating was 8 wt%. The viscosity of the coating is about 70 cPs. The wet film thickness is 20 to 40 μm.
一實施例中，在銅箔基材102上的材料層104厚度為70μm(即厚度值h為70)，材料層104之左側表面105A/右側表面105B投影在下表面113之寬度為200μm(即左側表面105A/右側表面105B投影在下表面113之寬度值X1/X2為200)，材料層104之左側表面105A/右側表面105B與下表面113之間的夾角θ1/θ2為20°。塗佈模具108的狹縫112的左寬度、右寬度為500μm(即左寬度值Y1、右寬度值Y2為500)。利用塗佈模具108在材料層104上形成的塗層116厚度為30μm(即厚度值w為30)。以上參數符合本揭露之關係式(I)及(II)。表1列示利用能量色散X-射線光譜(EDS)分析材料層104之上表面103與側表面(左側表面105A/右側表面105B)上附近，與靠近材料層104之基材102上附近的元 素及(以重量百分比Wt%或原子量百分比Atomic%表示的)量，發現四個偵測點(表1中編號1-1、1-2、1-3、1-4)都含有Si元素，表示塗層116完全覆蓋材料層104。且實施例之負極板結構在進行針刺實驗後，電池並未發生起火燃燒，因此實施例之極板結構使用安全性高。 In one embodiment, the material layer 104 on the copper foil substrate 102 has a thickness of 70 μm (ie, the thickness value h is 70), and the left side surface 105A/the right side surface 105B of the material layer 104 is projected on the lower surface 113 to have a width of 200 μm (ie, the left side). The surface 105A/right side surface 105B is projected on the lower surface 113 with a width value X 1 /X 2 of 200), and the angle θ 1 /θ 2 between the left side surface 105A / the right side surface 105B of the material layer 104 and the lower surface 113 is 20°. The left width and the right width of the slit 112 of the coating die 108 are 500 μm (that is, the left width value Y 1 and the right width value Y 2 are 500). The coating 116 formed on the material layer 104 by the coating die 108 has a thickness of 30 μm (i.e., a thickness value w of 30). The above parameters are in accordance with the relationships (I) and (II) of the present disclosure. Table 1 shows the use of energy dispersive X-ray spectroscopy (EDS) to analyze the vicinity of the upper surface 103 and the side surface (left side surface 105A / right side surface 105B) of the material layer 104, and elements near the substrate 102 near the material layer 104. And (in terms of weight percentage Wt% or atomic percentage Atomic%), it was found that four detection points (numbers 1-1, 1-2, 1-3, 1-4 in Table 1) contain Si elements, indicating The coating 116 completely covers the material layer 104. In the negative electrode plate structure of the embodiment, after the needle punching test, the battery does not ignite and burn, so the electrode plate structure of the embodiment has high safety.
在一些比較例中，塗佈模具並不符合本揭露的關係式(I)及(II)，在利用塗佈模具進行塗佈之後，塗層116無法完全覆蓋材料層104(第4圖)，或是材料層104上的塗層116膜面不連續，或是基材102上的塗層116膜面不連續(第5圖)，因此在應用製造極板結構會造成產品結構製作失敗。 In some comparative examples, the coating die does not conform to the relationships (I) and (II) of the present disclosure, and after coating with the coating die, the coating 116 does not completely cover the material layer 104 (Fig. 4). Or the coating film 116 on the material layer 104 is discontinuous, or the film surface of the coating 116 on the substrate 102 is discontinuous (Fig. 5). Therefore, the fabrication of the plate structure may cause the product structure to fail.
在一比較例中，材料層厚度為70μm，材料層之側表面投影在下表面之寬度為200μm，材料層之側表面與下表面之間的夾角為20°。使用之塗佈模具的狹縫的左/右寬度為0μm。形成的塗層厚度為30μm。以上參數不符合本揭露之關係式(I)及(II)。表2列示利用能量色散X-射線光譜分析材料層之上表面與側表面 上附近，與靠近材料層之基材上附近的元素，發現一些偵測點(表2中編號2-6、2-7、2-8、2-9、2-11)僅含有C元素，而未含有Si元素，表示塗層未覆蓋材料層的所有上表面與側表面。且比較例得到的負極板結構在進行針刺實驗後，電池發生起火燃燒，因此比較例的極板結構在使用上並不安全。 In a comparative example, the material layer thickness was 70 μm, the side surface of the material layer was projected on the lower surface to have a width of 200 μm, and the angle between the side surface and the lower surface of the material layer was 20°. The left/right width of the slit of the coating die used was 0 μm. The thickness of the coating formed was 30 μm. The above parameters do not conform to the relationships (I) and (II) of the present disclosure. Table 2 shows the analysis of the upper and side surfaces of the material layer by energy dispersive X-ray spectroscopy. Near the upper and near elements on the substrate near the material layer, some detection points (numbers 2-6, 2-7, 2-8, 2-9, 2-11 in Table 2) were found to contain only C elements. The absence of Si element means that the coating does not cover all of the upper and side surfaces of the material layer. Further, in the negative electrode plate structure obtained in the comparative example, after the needle punching test, the battery was ignited and burned, so that the electrode plate structure of the comparative example was not safe to use.
根據以上，以符合本揭露之關係式(I)及(II)對配置在基材上的材料層進行塗佈，可使得形成的塗層連續且完整地覆蓋材料層的上表面與側表面。在應用至電池的極板結構中，安全防護層可完全覆蓋活物層，因此能提供有效的保護作用，使得電池在操作上的安全性高。 According to the above, coating the material layer disposed on the substrate in accordance with the relationship (I) and (II) of the present disclosure allows the formed coating to continuously and completely cover the upper surface and the side surface of the material layer. In the plate structure applied to the battery, the safety protection layer can completely cover the living layer, thereby providing effective protection and making the battery safe in operation.
綜上所述，雖然本發明已以較佳實施例揭露如上，然其並非用以限定本發明。本發明所屬技術領域中具有通常知識者，在不脫離本發明之精神和範圍內，當可作各種之更動與潤飾。因此，本發明之保護範圍當視後附之申請專利範圍所界定者為準。 In conclusion, the present invention has been disclosed in the above preferred embodiments, and is not intended to limit the present invention. A person skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.
102‧‧‧基材 102‧‧‧Substrate
103‧‧‧材料層的上表面 103‧‧‧ Upper surface of the material layer
104‧‧‧材料層 104‧‧‧Material layer
105A‧‧‧材料層的左側表面 105A‧‧‧ left side surface of the material layer
105B‧‧‧材料層的右側表面 105B‧‧‧The right side surface of the material layer
107A‧‧‧材料層的左上端點 107A‧‧‧ upper left end of the material layer
107B‧‧‧材料層的右上端點 107B‧‧‧ upper right end of the material layer
108‧‧‧塗佈模具 108‧‧‧Application mould
111A‧‧‧塗層的左底表面 111A‧‧‧The left bottom surface of the coating
111B‧‧‧塗層的右底表面 111B‧‧‧The bottom right surface of the coating
112‧‧‧狹縫 112‧‧‧slit
113‧‧‧材料層的下表面 113‧‧‧The lower surface of the material layer
116‧‧‧塗層 116‧‧‧ Coating
A‧‧‧中間寬度值 A‧‧‧ intermediate width value
D1、D2‧‧‧寬度值 D 1 , D 2 ‧‧ ‧ width value
h‧‧‧厚度值 H‧‧‧thickness value
w‧‧‧厚度值 W‧‧‧thickness value
X1‧‧‧左側表面投影在下表面寬度值 X 1 ‧‧‧The left side surface is projected on the lower surface width value
X2‧‧‧右側表面投影在下表面之寬度值 X 2 ‧‧‧The width of the right side surface projected on the lower surface
Y1‧‧‧左寬度值 Y 1 ‧‧‧left width value
Y2‧‧‧右寬度值 Y 2 ‧‧‧right width value
θ1‧‧‧左側表面與下表面之間的夾角 θ 1 ‧‧‧An angle between the left and lower surfaces
θ2‧‧‧右側表面與下表面之間的夾角 θ 2 ‧‧‧An angle between the right side surface and the lower surface
λ1、λ2‧‧‧夾角 λ 1 , λ 2 ‧‧‧ angle
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