A full-solid-content photocuring coating for power / energy storage battery insulation and a preparation method and application thereof

Abstract

The application discloses a full-solid-content photocuring coating for power / energy storage battery insulation and a preparation method and application thereof. According to weight parts, the full-solid-content photocuring coating comprises 10-30 parts of epoxy acrylate resin, 10-30 parts of polyurethane acrylate resin, 25-50 parts of functionalized acrylate, 1-5 parts of silane coupling agent, 5-15 parts of initiator and 0.5-2.5 parts of rheological additive; wherein the rheological additive comprises 0.2-2 parts of fumed silica, 0.2-2 parts of polyamide wax and 0.1-2 parts of bentonite. By adjusting the specific types and adding proportions of the fumed silica, the polyamide wax and the bentonite in the rheological additive, the thixotropy of the full-solid-content photocuring coating is improved, so that excellent overall film thickness uniformity can be obtained when the insulation protective coating is formed on the surface of the battery cell shell by adopting the dip coating mode.

Description

Technical Field

[0001] The present invention relates to the technical field of coatings for electrical insulation of battery cell shells. More specifically, it relates to a full-solid light-curing coating for insulation of power / energy storage batteries, and its preparation method and application. Background Art

[0002] As a core component of new energy vehicles, power batteries have long been a key area of ​​research. Lithium-ion battery cells used in new energy vehicles have relatively high electrical insulation requirements, typically requiring a coating with excellent insulating properties to be applied to the cell casing.

[0003] Currently, the coatings used for insulation protection of aluminum shells of lithium-ion battery cells are mainly spray powder coatings and UV-curing coatings: 1) The advantage of spray powder coatings is the high paint recovery rate, but the disadvantage is that they require high-temperature baking, which is not energy-efficient, and the battery cells can only be installed and the electrolyte can be poured after spraying; 2) The advantage of spray UV-curing coatings is low-temperature curing, and the product can be sprayed after the battery cells and electrolyte are installed. The disadvantage is the low paint recovery rate. For example, when using ordinary air pressure spraying, only about 35% of the components are adsorbed on the surface of the aluminum shell, and about 65% falls outside the aluminum shell or is sucked away by the exhaust duct. The unrecovered paint pollutes the environment and indirectly increases the coating cost of the product.

[0004] Dip coating is a coating method that uses immersion to achieve a coating effect. The object is completely immersed in the paint solution. Once all surfaces are coated, the object is lifted out of the paint solution, allowing excess paint to drip naturally or forcibly back into the paint tank. After drying, a coating film forms on the surface of the object, achieving near-100% coating efficiency. However, the dip coating process places high demands on the coating's leveling and sagging properties, making it prone to problems such as excessively thick and uneven film thickness. This is particularly true for all-solid UV-curable coatings, which have a higher viscosity. Therefore, there are currently no reports on the application of all-solid UV-curable coatings in automotive power batteries using the dip coating process. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the first object of the present invention is to provide a full-solid light-curing coating for power / energy storage battery insulation.

[0006] The second object of the present invention is to provide a method for preparing the all-solid light-curing coating as described above.

[0007] The third object of the present invention is to provide a use of the all-solid light-curing coating as described above in the preparation of power / energy storage batteries.

[0008] In order to achieve the above first object, the present invention adopts the following technical solutions:

[0009] The present invention discloses a full-solid light-curing coating for power / energy storage battery insulation, which comprises, by weight,

[0010] 10-30 parts of epoxy acrylate resin;

[0011] 10-30 parts of polyurethane acrylate resin;

[0012] 25-50 parts of functionalized acrylate;

[0013] 1-5 parts of silane coupling agent;

[0014] 5-15 parts of initiator; and

[0015] Rheological additive 0.5-2.5 parts;

[0016] The rheological additive comprises 0.2-2 parts of fumed silica, 0.2-2 parts of polyamide wax and 0.1-2 parts of bentonite.

[0017] Furthermore, the rheological additive comprises 0.5-1 part of fumed silica, 0.5-1 part of polyamide wax and 0.5-1 part of bentonite.

[0018] Furthermore, the mass ratio of the fumed silica, polyamide wax and bentonite is 1:1-2:1-2.

[0019] Furthermore, the fumed silica is a hydrophobic fumed silica selected from one or more of AEROSIL R972, ER972, and R974 of Evonik Industries, Germany; HDK H20, H15, and H30 of Wacker Chemicals (China) Co., Ltd.; and IS-SD2003L, SD2002P, SD1506Y, and SD2001L of Hangzhou Yingxing New Materials Co., Ltd.

[0020] The polyamide wax is selected from one or more of 8100, 8200, and 8300 produced by Jiangxi Longhai Chemical Co., Ltd.;

[0021] The bentonite is an organic bentonite selected from Bentone 38 and / or SD-2 produced by Shanghai Haiming Si Deqian Chemical Co., Ltd.

[0022] Furthermore, the functionalized acrylate is selected from one or more of monofunctional acrylate, difunctional acrylate and multifunctional acrylate.

[0023] Further, the monofunctional acrylate is selected from one or more of acryloylmorpholine, isobornyl methacrylate, isobornyl acrylate, N-hydroxyethylacrylamide, hydroxyethyl acrylate, hydroxypropyl acrylate, hydroxyethyl methacrylate and hydroxypropyl methacrylate;

[0024] The bifunctional acrylate is selected from one or more of hexylene glycol diacrylate, tricyclodecane dimethanol diacrylate, tricyclodecane dimethanol dimethyl diacrylate, and Boxing New Materials Co., Ltd. B-02;

[0025] The multifunctional acrylate is selected from one or more of tris(2-hydroxyethyl)isocyanuric acid triacrylate, pentaerythritol triacrylate, dipentaerythritol hexaacrylate, propoxylated glycerol triacrylate, ethoxylated trimethylolpropane triacrylate, and Boxing New Materials Co., Ltd. B-05.

[0026] Furthermore, the epoxy acrylate resin is selected from one or more of EBECRYL 3300 of Allnex Resins (China) Co., Ltd., NeoRad E-20 of Covestro Polymers (China) Co., Ltd., and B-100M of Boxing New Materials Co., Ltd.;

[0027] The polyurethane acrylate resin is selected from one or more of EBECRYL 4265 and EBECRYL 8254 of Allnex Resins (China) Co., Ltd.; AgiSyn 230A2 and NeoRad E-20 of Covestro Polymers (China) Co., Ltd.; B-2018 of Boxing New Materials Co., Ltd. and W682 of Guangzhou Five Elements Material Technology Co., Ltd.

[0028] Furthermore, the silane coupling agent is selected from one or more of A187 of Momentive Advanced Materials Group, USA, 2063H of Lubrizol Management (Shanghai) Co., Ltd., KBM803 and KBM403 of Shin-Etsu Chemical Co., Ltd. of Japan;

[0029] The initiator is selected from one or more of 2-hydroxy-2-methyl-1-phenyl-1-propanone, bis(2,4,6-trimethylbenzoyl)phenylphosphine oxide and 2,4,6-trimethylbenzoyl-diphenylphosphine oxide.

[0030] Furthermore, the all-solid light-curing coating further comprises 3-15 parts of filler, 0-1 part of leveling agent, 0-1 part of defoaming agent and 2-5 parts of color paste.

[0031] In order to achieve the above second purpose, the present invention adopts the following technical solutions:

[0032] The present invention discloses a method for preparing the above-mentioned all-solid light-curing coating, comprising the following steps:

[0033] Add epoxy acrylate resin, polyurethane acrylate resin, functionalized acrylate, silane coupling agent and initiator into the container, mix until uniform, add rheological additive, and continue stirring until uniform.

[0034] In order to achieve the third object, the present invention adopts the following technical solutions:

[0035] The present invention discloses the use of the all-solid photocurable coating as described above in the preparation of power / energy storage batteries, wherein the application is to use the all-solid photocurable coating to form an insulating protective coating on the surface of the battery cell casing or other battery cell insulating components in the power / energy storage battery.

[0036] Furthermore, the surface of the cell shell or other cell insulation components in the power / energy storage battery is dip-coated with the full-solid light-curing coating to form an insulating protective coating.

[0037] Furthermore, the dry film thickness of the insulating protective coating is 80-120 μm, and the thickness difference of the insulating protective coating formed in the entire dip-coating area of ​​the component is no more than 10 μm.

[0038] Furthermore, the battery cell shell is an aluminum battery cell shell.

[0039] The beneficial effects of the present invention are as follows:

[0040] The present invention selects suitable monomers and oligomers, and then initiates polymerization of epoxy acrylate resin, polyurethane acrylate resin, functionalized acrylate, and silane coupling agent under the action of a photoinitiator to obtain the coating. The epoxy acrylate resin in the formula can provide the coating with excellent chemical resistance and good insulation. The polyurethane acrylate resin has urethane bonds in its structure, and hydrogen bonds can be formed between molecular chains, so that the coating has excellent mechanical wear resistance and chemical resistance. The functionalized acrylate can be used as an active diluent and, together with the silane coupling agent, ensures strong adhesion of the coating. Under the joint action of the above-mentioned monomers and oligomers, the coating has excellent mechanical wear resistance, pressure resistance, high and low temperature impact resistance, chemical resistance, insulation performance, etc., and can meet the basic performance requirements of the battery shell.

[0041] The present invention selects a combination of three rheological additives, namely, fumed silica, polyamide wax and bentonite. By adjusting the ratio of the three rheological additives, the all-solid light-curing coating is given excellent rheological properties, so that the all-solid light-curing coating can still obtain a coating film of uniform thickness under the dipping process, thereby improving the utilization rate of the all-solid light-curing coating and reducing the coating cost of the product. DETAILED DESCRIPTION

[0042] In order to explain the present invention more clearly, the present invention is further described below in conjunction with preferred embodiments. Those skilled in the art should understand that the following specific description is illustrative rather than restrictive and should not be used to limit the scope of protection of the present invention.

[0043] Dip coating is a commonly used coating process in the coatings industry, characterized by high production efficiency, no paint mist, environmental friendliness, simple operation, and minimal paint loss. The primary process parameter for dip coating is the coating viscosity, which directly affects the appearance and thickness of the paint film. If the coating viscosity is too low, the coating contains too much solvent, resulting in a thin film, severe flow marks, residual paint that cannot be completely dripped, and uneven film thickness between the upper and lower parts. If the coating viscosity is too high, the paint film will be thicker and have poor fluidity. All-solid UV-curing coatings typically have a lower viscosity. Therefore, if applying an all-solid UV-curing coating to a substrate by dip coating is considered in actual applications, the primary issue to be addressed is improving the coating's rheological properties to achieve an appropriate viscosity.

[0044] Adding rheological additives is one of the most effective methods to adjust the viscosity of coatings and has been widely used in the coatings field. Rheological additives commonly used in coatings include organic bentonite, fumed silica, polyamide wax, hydrogenated castor oil, etc. However, at this stage, the use of these rheological additives focuses more on introducing rheological additives to increase the viscosity of the system and thus obtain better anti-settling effect or storage stability, and less attention is paid to improving the paint film thickness and film thickness uniformity.

[0045] The first aspect of the present invention provides a full-solid light-curing coating that matches the dipping process and is used in power / energy storage battery insulation. The full-solid light-curing coating comprises, by weight,

[0046] 10-30 parts of epoxy acrylate resin;

[0047] 10-30 parts of polyurethane acrylate resin;

[0048] 25-50 parts of functionalized acrylate;

[0049] 1-5 parts of silane coupling agent;

[0050] 5-15 parts of initiator; and

[0051] Rheological additive 0.5-2.5 parts;

[0052] The rheological additive comprises 0.2-2 parts of fumed silica, 0.2-2 parts of polyamide wax and 0.1-2 parts of bentonite.

[0053] Due to the differences in the structures of fumed silica, polyamide wax and bentonite and the interactions between them and other components in the coating, the present invention uses three rheological additives, fumed silica, polyamide wax and bentonite, in combination to achieve better thixotropy improvement, eliminating the problems of thick paint film and uneven film thickness in the upper and lower parts of the full-solid light-curing coating during dip coating.

[0054] Fumed silica has a relatively small particle size, a large specific surface area, good compatibility with film-forming resins, easy hydrogen bonding, and a high thixotropic index. In one embodiment, the fumed silica is a hydrophobic fumed silica selected from one or more of Evonik Industries AG's AEROSIL R972, ER972, and R974; Wacker Chemicals (China) Co., Ltd.'s HDK H20, H15, and H30; and Hangzhou Yingxing New Materials Co., Ltd.'s IS-SD2003L, SD2002P, SD1506Y, and SD2001L.

[0055] The polyamide wax has a network structure, excellent heat resistance and storage stability, and moderately improves the viscosity of the system. In one embodiment, the polyamide wax is selected from one or more of 8100, 8200, and 8300 produced by Jiangxi Longhai Chemical Co., Ltd.

[0056] Bentonite has properties such as swelling, adhesion, and cation exchange, making it easy to modify in various ways. It can form a network structure in coatings, imparting a certain structural viscosity to the coating. In one embodiment, the bentonite is an organobentonite selected from Bentone 38 and / or SD-2 manufactured by Shanghai Haiming Si Deqian Chemical Co., Ltd.

[0057] In order to obtain better thixotropy, the present invention further optimizes the addition of three kinds of rheological additives of fumed silica, polyamide wax and bentonite, and the rheological additive comprises 0.5-1 part of fumed silica (preferably 0.5 part), 0.5-1 part of polyamide wax and 0.5-1 part of bentonite. Further, when the addition of the fumed silica is less than or equal to polyamide wax and bentonite, the effect is better. In a specific embodiment, when the mass ratio of the fumed silica, polyamide wax and bentonite is 1:1-2:1-2, the improvement effect for system is better, illustratively, the mass ratio of the fumed silica, polyamide wax and bentonite can be 1:1:1, 1:1:1.5, 1:1:2, 1:1.5:1, 1:1.5:1.5, 1:1.5:2, 1:2:1, 1:2:1.5, 1:2:2 etc.

[0058] Further, the epoxy acrylate resin is selected from one or more of EBECRYL 3300 by Zannan Resin (China) Co., Ltd., NeoRad E-20 by Covestro Polymer (China) Co., Ltd., B-100M by Bovogen Chemicals Pty Ltd.

[0059] Further, the polyurethane acrylate resin has urethane bond in its structure, and the molecular chains can form hydrogen bonds to provide excellent mechanical wear resistance and chemical resistance to the coating, including but not limited to one or more of EBECRYL 4265, EBECRYL 8254 by Zannan Resin (China) Co., Ltd., AgiSyn 230A2, NeoRad E-20 by Covestro Polymer (China) Co., Ltd., B-2018 by Bovogen Chemicals Pty Ltd., and W682 by Guangzhou Wuxing Material Technology Co., Ltd.

[0060] Further, the functionalized acrylate is selected from one or more of monofunctional acrylate, difunctional acrylate, and multifunctional acrylate;

[0061] The monofunctional acrylate is selected from one or more of acryloyl morpholine, isobornyl methacrylate, isobornyl acrylate, N-hydroxyethyl acrylamide, hydroxyethyl acrylate, hydroxypropyl acrylate, hydroxyethyl methacrylate, and hydroxypropyl methacrylate;

[0062] The difunctional acrylate is selected from one or more of hydroxydiol diacrylate, tricyclodecane dimethanol diacrylate, tricyclodecane dimethanol dimethacrylate, B-02 by Bovogen Chemicals Pty Ltd.

[0063] The multifunctional acrylate is selected from one or more of tris(2-hydroxyethyl) isocyanurate triacrylate, pentaerythritol triacrylate, dipentaerythritol hexaacrylate, glyceryl propoxylate triacrylate, ethoxylated trimethylolpropane triacrylate, B-05 by Bovogen Chemicals Pty Ltd.

[0064] Further, the silane coupling agent is selected from one or more of A187 by American Momentive Performance Materials Group, 2063H by Lubrizol Management (Shanghai) Co., Ltd., KBM803, KBM403 by Japan Shin-Etsu Chemical Co., Ltd.

[0065] The initiator is selected from one or more of 2-hydroxy-2-methyl-1-phenyl-1-propanone (abbreviated as initiator 1173), bis(2,4,6-trimethylbenzoyl)phenylphosphine oxide (abbreviated as initiator 819), and 2,4,6-trimethylbenzoyl-diphenylphosphine oxide (abbreviated as TPO).

[0066] Furthermore, the all-solid light-curing coating also contains 3-15 parts of filler, 0-1 part of leveling agent, 0-1 part of defoaming agent and 2-5 parts of color paste; in a specific embodiment, the all-solid light-curing coating contains 3-5 parts of filler, 0.3-1 part of leveling agent, 0.3-1 part of defoaming agent and 2-3 parts of color paste.

[0067] Illustratively, the filler is selected from HY-A05 talc powder of Shenzhen Haiyang Powder Technology Co., Ltd., the leveling agent is selected from BYK361N and / or BYK UV3535 of BYK Additives (Shanghai) Co., Ltd., the defoaming agent is selected from BYK1790 and / or BYK1788 of BYK Additives (Shanghai) Co., Ltd., and the color paste is selected from color paste W1008-UV and / or B6153-UV of Guangdong Kedi New Materials Technology Co., Ltd.

[0068] A second aspect of the present invention provides a method for preparing the all-solid light-curing coating as described above, comprising the following steps:

[0069] 1) adding epoxy acrylate resin, polyurethane acrylate resin, functionalized acrylate, silane coupling agent and initiator into a container and mixing until uniform;

[0070] 2) Add rheological additive, filler, leveling agent, defoamer and color paste and continue stirring until uniform.

[0071] Furthermore, the stirring rate of step 1) is 600-800 rpm, and the stirring time is 10-15 minutes; the stirring rate of step 2) is 600-800 rpm, and the stirring time is 15-20 minutes.

[0072] A third aspect of the present invention provides a dip coating process for forming an insulating protective coating using the all-solid light-curing coating as described above. The dip coating process adopts a double dip coating process and specifically comprises the following steps:

[0073] Place the full-solid light-curing coating in a coating tank with stirring and heating functions, preheat it to 45-55°C, immerse the parts to be dipped into the coating tank, and dip-coat once. After dipping, take them out and cure them with a high-pressure mercury lamp, electrodeless lamp or LED. After curing, immerse the parts into the coating tank again and dip-coat a second time. After dipping, take them out and cure them with a high-pressure mercury lamp, electrodeless lamp or LED.

[0074] Furthermore, the dry film thickness of the insulating protective coating is 80-120 μm, and the thickness difference of the insulating protective coating formed in the entire dip-coating area of ​​the component is no more than 10 μm.

[0075] The component may be a cell casing in a power / energy storage battery, such as an aluminum casing, or may be other cell insulation components.

[0076] The following is further described by examples.

[0077] Examples 1-3

[0078] This group of examples provides three all-solid light-curing coating formulations, with specific ingredients shown in Table 1.

[0079] Table 1

[0080]

[0081] According to the formula in Table 1, epoxy acrylate resin, polyurethane acrylate resin, functionalized acrylate, silane coupling agent and initiator were added to the container and mixed until uniform. Then, fumed silica, polyamide wax, bentonite, filler, leveling agent, defoamer and color paste were added and stirred until uniform to obtain a full-solid light-curing coating.

[0082] Comparative Examples 1-7

[0083] This group of comparative examples provides seven all-solid light-curing coating formulations, with specific ingredients shown in Table 2.

[0084] Table 2

[0085]

[0086]

[0087] According to the formula in Table 2, epoxy acrylate resin, polyurethane acrylate resin, functionalized acrylate, silane coupling agent and initiator were added to the container and mixed until uniform. Then, fumed silica, polyamide wax, bentonite, filler, leveling agent, defoamer and color paste were added and stirred until uniform to obtain a full-solid light-curing coating.

[0088] Performance Testing

[0089] The all-solid light-curing coatings prepared in Examples 1-3 and Comparative Examples 1-7 were used in the cell casing of a power / energy storage battery. The specific method of use is as follows:

[0090] Place the full-solid light-curing coating in a coating tank with stirring and heating functions, preheat it to 45-55°C, immerse the battery cell shell in the coating tank, and perform a dip coating. After the dip coating is completed, take it out and cure it with a high-pressure mercury lamp, electrodeless lamp or LED. The curing light intensity is UVA200-300mw / cm 2 , energy is 2000-2500mj / cm 2After curing, re-immerse the part in the paint tank for a second dip coating. After dipping, remove the part and cure it with a high-pressure mercury lamp, electrodeless lamp, or LED. The desired dry film thickness after two dip coatings is 90-100μm. The resulting paint film is tested for the following items. See Table 3 for test methods and specific requirements.

[0091] Table 3

[0092]

[0093] The test results of Examples 1-3 are shown in Table 4.

[0094] Table 4

[0095]

[0096]

[0097] Note: Slightly poor leveling is an evaluation result between leveling OK and leveling NG. It is an intermediate state representation set according to different customers' requirements for leveling scale. However, it is also considered leveling OK according to general requirements in the industry.

[0098] The test results of Comparative Examples 1-7 are shown in Table 5.

[0099] Table 5

[0100]

[0101]

[0102] in conclusion:

[0103] The present invention uses fumed silica, polyamide wax and bentonite in combination and in a specific weight ratio, thereby greatly improving the construction performance of the all-solid light-curing coating under the dipping process, so that the insulating layer formed at different positions has a uniform film thickness, is flat and smooth, has good adhesion, and has excellent mechanical wear resistance, pressure resistance, high and low temperature impact resistance, chemical resistance, insulation performance and other paint film resistances.

[0104] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the scope of protection of the present invention.

Claims

1. A full-solid light-curing coating for power / energy storage battery insulation, characterized in that: By weight, the all-solid light-curing coating comprises 10-30 parts of epoxy acrylate resin; 10-30 parts of polyurethane acrylate resin; 25-50 parts of functionalized acrylate; 1-5 parts of silane coupling agent; 5-15 parts of initiator; as well as Rheological additive 0.5-2.5 parts; Wherein, the rheological additive comprises 0.2-2 parts of fumed silica, 0.2-2 parts of polyamide wax and 0.1-2 parts of bentonite; The fumed silica is a hydrophobic fumed silica selected from one or more of AEROSIL R972, ER972, and R974 from Evonik Industries, Germany; HDK H20, H15, and H30 from Wacker Chemicals (China) Co., Ltd.; and IS-SD2003L, SD2002P, SD1506Y, and SD2001L from Hangzhou Yingxing New Materials Co., Ltd. The polyamide wax is selected from one or more of 8100, 8200, and 8300 produced by Jiangxi Longhai Chemical Co., Ltd.; The bentonite is an organic bentonite selected from Bentone 38 and / or SD-2 produced by Haiming Si Deqian (Shanghai) Chemical Co., Ltd.; The mass ratio of the fumed silica, polyamide wax and bentonite is 1:1-2:1-2, and the mass ratio of the mixture excluding the fumed silica, polyamide wax and bentonite is 1:1:

1.

2. The all-solid light-curing coating according to claim 1, characterized in that: The functionalized acrylate is selected from one or more of monofunctional acrylate, difunctional acrylate and multifunctional acrylate.

3. The all-solid light-curing coating according to claim 2, characterized in that: The monofunctional acrylate is selected from one or more of isobornyl methacrylate, isobornyl acrylate, hydroxyethyl acrylate, hydroxypropyl acrylate, hydroxyethyl methacrylate and hydroxypropyl methacrylate; The bifunctional acrylate is selected from one or more of hexylene glycol diacrylate, tricyclodecane dimethanol diacrylate, and tricyclodecane dimethanol dimethyl diacrylate; The multifunctional acrylate is selected from one or more of tris(2-hydroxyethyl)isocyanuric acid triacrylate, pentaerythritol triacrylate, dipentaerythritol hexaacrylate, propoxylated glycerol triacrylate, ethoxylated trimethylolpropane triacrylate, Boxing New Materials Co., Ltd. B-02, and Boxing New Materials Co., Ltd. B-05.

4. The all-solid light-curing coating according to claim 1, characterized in that: The epoxy acrylate resin is selected from one or more of EBECRYL 3300 of Allnex Resins (China) Co., Ltd., NeoRad E-20 of Covestro Polymers (China) Co., Ltd., and B-100M of Boxing New Materials Co., Ltd.; The polyurethane acrylate resin is selected from one or more of EBECRYL 4265 and EBECRYL 8254 of Allnex Resins (China) Co., Ltd.; AgiSyn 230A2 and NeoRad E-20 of Covestro Polymers (China) Co., Ltd.; B-2018 of Boxing New Materials Co., Ltd. and W682 of Guangzhou Five Elements Material Technology Co., Ltd.

5. The all-solid light-curing coating according to claim 1, characterized in that: The silane coupling agent is selected from one or more of A187 of Momentive Advanced Materials Group, USA, 2063H of Lubrizol Management (Shanghai) Co., Ltd., KBM803 and KBM403 of Shin-Etsu Chemical Co., Ltd. of Japan; The initiator is selected from one or more of 2-hydroxy-2-methyl-1-phenyl-1-propanone, bis(2,4,6-trimethylbenzoyl)phenylphosphine oxide and 2,4,6-trimethylbenzoyl-diphenylphosphine oxide.

6. The all-solid light-curing coating according to claim 1, characterized in that: The all-solid light-curing coating further comprises 3-15 parts of filler, 0-1 part of leveling agent, 0-1 part of defoaming agent and 2-5 parts of color paste.

7. The method for preparing a full-solid light-curing coating according to any one of claims 1 to 6, characterized in that: The steps include: Add epoxy acrylate resin, polyurethane acrylate resin, functionalized acrylate, silane coupling agent and initiator into the container, mix until uniform, add rheological additive, and continue stirring until uniform.

8. Use of the all-solid light-curing coating according to any one of claims 1 to 6 in the preparation of power / energy storage batteries, characterized in that: The application is to use the all-solid light-curing coating to form an insulating protective coating on the surface of the battery cell shell or other battery cell insulating components in the power / energy storage battery.

9. The use according to claim 8, characterized in that The surface of the cell shell or other cell insulation components in the power / energy storage battery is dip-coated with the full-solid light-curing coating to form an insulating protective coating.

10. The use according to claim 9, characterized in that The dry film thickness of the insulating protective coating is 80-120 μm, and the thickness difference of the insulating protective coating formed in the entire dipping area of ​​the component is no more than 10 μm.

11. The use according to claim 9, characterized in that The battery cell shell is an aluminum battery cell shell.

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