A new energy automobile motor control driver special tin paste

Abstract

The application discloses a special tin paste for new energy automobile motor control driver, which comprises solder alloy powder, flux and conductive agent, wherein the flux comprises the following components in the following proportions by weight: 10-15 parts of ammonium chloride, 20-30 parts of synthetic rosin, 5-10 parts of diethylamine hydrochloride, 2-4 parts of succinic acid, 1-2 parts of triol amine, 20-25 parts of ethyl acetate, 10-13 parts of ethylene glycol monoethyl ether, 2-4 parts of long-chain aliphatic hydrocarbon and 3-5 parts of rosin glyceride. The conductive agent is added to the flux, so that the flux has the characteristics of high conductivity and structural stability, the tin paste has good conductivity, the response speed is improved, the high-temperature-resistant adhesive is added to the flux, the tin paste still has good shear resistance in a high-temperature environment, the performance of the tin paste is improved, the tin paste can be used in different high-temperature environments, and the tin paste has good high-temperature resistance and good shear resistance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tin paste, more particularly, to a special tin paste for new energy automobile motor control driver. BACKGROUND

[0002] The function of the motor driver is to control the rotation angle and running speed of the motor to achieve the control of the duty cycle to achieve the motor idle speed control mode, with the rapid development of the current new energy field, the holding amount of new energy vehicles on the market gradually rises, and the important amount of the motor driver in the new energy vehicle is crucial.

[0003] Tin paste is a soldering material, which plays a connecting role between various components in the production of the driver, and the solder paste is viscous at room temperature, wherein the solid component mainly includes solder powder, the liquid component mainly includes flux and a small amount of additives, and the tin paste is used for welding work in the assembly of various components in the production of the driver, so as to ensure the stable connection between the components, but the tin paste on the market has the following disadvantages in specific use.

[0004] The tin paste on the market has poor shear resistance in high temperature environment, so that the connection between various components in the driver is easily affected by the working environment of the driver, which reduces the running safety of the driver, and the conductivity of the tin paste on the market is not ideal, which disturbs the running stability of the driver, therefore, the present application provides a special tin paste for new energy automobile motor control driver. SUMMARY

[0005] The present application aims to solve the problems pointed out in the background.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a special tin paste for new energy automobile motor control driver, which comprises solder alloy powder, flux and conductive agent, the flux comprises the following components in the following weight parts:

[0007] Ammonium chloride 10-15 parts

[0008] Synthetic rosin 20-30 parts

[0009] Diethylamine hydrochloride 5-10 parts

[0010] Succinic acid 2-4 parts

[0011] Triol amine 1-2 parts

[0012] Ethyl acetate 20-25 parts

[0013] Ethylene glycol monoethyl ether 10-13 parts

[0014] Long chain aliphatic hydrocarbon 2-4 parts

[0015] Glyceryl ester of rosin 3-5 parts.

[0016] Preferably, the flux further comprises a surfactant, an antioxidant and a matting agent.

[0017] Preferably, the surfactant comprises the following components in the following parts by weight:

[0018] Sodium sulfonate 1-2 parts

[0019] Cetyl trimethyl ammonium bromide 0.5-0.8 parts.

[0020] Preferably, the antioxidant comprises the following components in the following parts by weight:

[0021] Hydroquinone 0.3-0.5 parts

[0022] Catechol 0.3-0.6 parts;

[0023] The matting agent comprises the following components in the following parts by weight:

[0024] Palmitic acid 0.3-0.6 parts.

[0025] Preferably, the solder alloy powder is SnAg3.8Cu0.7, the volume ratio of the solder alloy powder to the flux is 1:0.9, and the weight ratio of the solder alloy powder to the flux is 10:89.

[0026] Preferably, the conductive agent is composed of conductive silver powder, graphene powder, sodium dodecyl sulfate, and polyvinyl silicone copolymer.

[0027] The conductive agent is prepared from the following raw materials in the following parts by weight:

[0028] Conductive silver powder 3-5 parts

[0029] Graphene powder 5-7 parts

[0030] Sodium dodecyl sulfate 1-2 parts

[0031] Polyvinyl silicone copolymer 2-3 parts;

[0032] The flux comprises the following components in the following parts by weight:

[0033] Ammonium chloride 10-15 parts

[0034] Synthetic rosin 20-30 parts

[0035] Diethylamine hydrochloride 5-10 parts

[0036] Succinic acid 2-4 parts

[0037] Triol amine 1-2 parts

[0038] Ethyl acetate 20-25 parts

[0039] Ethylene glycol monoethyl ether 10-13 parts

[0040] Long chain aliphatic hydrocarbon 2-4 parts

[0041] Gum rosin glyceride 3-5 parts

[0042] Conductive silver powder 3-5 parts

[0043] Graphene powder 5-7 parts

[0044] Sodium dodecyl sulfate 1-2 parts

[0045] Polyvinyl alcohol silicone copolymer 2-3 parts.

[0046] Preferably, the preparation method of the conductive agent comprises:

[0047] (a) adding the conductive silver powder, graphene powder, sodium dodecyl sulfate, polyvinyl alcohol silicone copolymer, and deionized water into the reaction kettle in the above-mentioned proportions, first heated to 40-60°C, and kept at this temperature for 5 min of continuous stirring, so that the components are mixed uniformly;

[0048] (b) then the reaction kettle is heated to 80-110°C for continuous stirring, so that the components in the reaction kettle react for 30-40 min, and then the required conductive agent can be obtained.

[0049] Preferably, the flux further comprises a high-temperature resistant adhesive.

[0050] Preferably, the high-temperature resistant adhesive is composed of zinc oxide, silicon dioxide, potassium feldspar, rosin resin, and phenolic resin;

[0051] The high-temperature resistant adhesive comprises the following components in the following weight parts:

[0052] Zinc oxide 0.2-0.6 parts

[0053] Silicon dioxide 0.4-0.7 parts

[0054] Potassium feldspar 0.3-0.6 parts

[0055] Rosin resin 5-8 parts

[0056] Phenolic resin 6-10 parts.

[0057] Preferably, the flux comprises the following components in the following weight parts:

[0058] Ammonium chloride 10-15 parts

[0059] Synthetic rosin 20-30 parts

[0060] Diethylamine hydrochloride 5-10 parts

[0061] Butanedioic acid 2-4 parts

[0062] Triol amine 1-2 parts

[0063] Ethyl acetate 20-25 parts

[0064] Ethylene glycol monoethyl ether 10-13 parts

[0065] Long-chain aliphatic hydrocarbon 2-4 parts

[0066] Glycerol ester of rosin 3-5 parts

[0067] Zinc oxide 0.2-0.6 parts

[0068] Silicon dioxide 0.4-0.7 parts

[0069] Potassium feldspar 0.3-0.6 parts

[0070] Rosin resin 5-8 parts

[0071] Phenolic resin 6-10 parts.

[0072] A new energy automobile motor control driver special tin paste,

[0073] The technical effects and advantages of the present application are as follows:

[0074] 1、The present application adds conductive agent in the flux, which utilizes the action of conductive silver powder, graphene powder, sodium dodecyl sulfate and polyvinyl silicone copolymer to make the flux have high conductivity and structural stability, so that the tin paste can obtain good conductivity in use, providing guarantee for the connection between various components, accelerating the rapid flow of data, improving the response speed, making the operation of the driver more stable and safe, and prolonging the service life of the driver.

[0075] 2、The present application adds high-temperature resistant adhesive in the flux, which is supported by zinc oxide, silicon dioxide, potassium feldspar, rosin resin and phenolic resin, so that the tin paste can still maintain good shear resistance in high-temperature environment, improving the performance of the tin paste and enabling it to be used in different high-temperature environments, so that the tin paste can not only obtain good high-temperature resistance but also good shear resistance, and has strong adaptability. DETAILED DESCRIPTION

[0076] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in details below with specific examples. It should be understood that the specific examples described herein are only used to explain the present application and should not be used to limit the present application. Based on the examples in the present application, all other examples obtained by those skilled in the art without creative efforts fall within the scope of the present application.

[0077] Example 1

[0078] The solder alloy powder, the flux and the conductive agent, the flux comprises the following components by weight as follows:

[0079] Ammonium chloride 10 parts

[0080] Synthetic rosin 20 parts

[0081] Diethylamine hydrochloride 5 parts

[0082] Succinic acid 2 parts

[0083] Triol amine 1 part

[0084] Ethyl acetate 20 parts

[0085] Ethylene glycol monoethyl ether 10 parts

[0086] Long-chain aliphatic hydrocarbon 2 parts

[0087] Rosin glyceride 3 parts.

[0088] Preferably, the flux further comprises a surfactant, an antioxidant and a matting agent.

[0089] Preferably, the surfactant comprises the following components by weight as follows:

[0090] Sodium sulfonate of diethyl succinate 1-2 parts

[0091] Cetyl trimethyl ammonium bromide 0.5-0.8 parts.

[0092] Preferably, the antioxidant comprises the following components by weight as follows:

[0093] Hydroquinone 0.3-0.5 parts

[0094] Catechol 0.3-0.6 parts;

[0095] The matting agent comprises the following components by weight as follows:

[0096] Palmitic acid 0.3-0.6 parts.

[0097] Preferably, the solder alloy powder is SnAg3.8Cu0.7, the volume ratio of the solder alloy powder to the flux is 1:0.9, and the weight ratio of the solder alloy powder to the flux is 10:89.

[0098] Preferably, the conductive agent is composed of conductive silver powder, graphene powder, sodium dodecyl sulfate, and polyvinyl silicone copolymer.

[0099] The conductive agent is prepared from the following raw materials by weight:

[0100] Conductive silver powder 3-5 parts

[0101] Graphene powder 5-7 parts

[0102] Sodium dodecyl sulfate 1-2 parts

[0103] Polyvinyl silicone copolymer 2-3 parts

[0104] The flux includes the following components by weight:

[0105] Ammonium chloride 10 parts

[0106] Synthetic rosin 20 parts

[0107] Diethylamine hydrochloride 5 parts

[0108] Succinic acid 2 parts

[0109] Triol amine 1 part

[0110] Ethyl acetate 20 parts

[0111] Ethylene glycol monoethyl ether 10 parts

[0112] Long-chain aliphatic hydrocarbon 2 parts

[0113] Rosin glyceride 3 parts

[0114] Conductive silver powder 3 parts

[0115] Graphene powder 5 parts

[0116] Sodium dodecyl sulfate 1 part

[0117] Polyvinyl silicone copolymer 2 parts.

[0118] Preferably, the preparation method of the conductive agent includes:

[0119] (a) The conductive silver powder, graphene powder, sodium dodecyl sulfate, polyvinyl silicone copolymer, and deionized water are added to the reaction kettle in the above proportions, heated to 40-60℃, and kept at this temperature for 5 min of continuous stirring to mix the raw materials evenly;

[0120] (b) Subsequently, the reactor is warmed up to 80-110°C while stirring, so that the raw materials of the components are reacted in the reactor for 30-40 minutes, and then the desired conductive agent is obtained.

[0121] Preferably, the flux further comprises a high-temperature resistant adhesive.

[0122] Preferably, the high-temperature resistant adhesive is composed of zinc oxide, silicon dioxide, potassium feldspar, rosin resin, and phenolic resin.

[0123] The high-temperature resistant adhesive comprises the following components in the following weight parts:

[0124] Zinc oxide 0.2-0.6 parts

[0125] Silicon dioxide 0.4-0.7 parts

[0126] Potassium feldspar 0.3-0.6 parts

[0127] Rosin resin 5-8 parts

[0128] Phenolic resin 6-10 parts.

[0129] Preferably, the flux comprises the following components in the following weight parts:

[0130] Ammonium chloride 10 parts

[0131] Synthetic rosin 20 parts

[0132] Diethylamine hydrochloride 5 parts

[0133] Succinic acid 2 parts

[0134] Triol amine 1 part

[0135] Ethyl acetate 20 parts

[0136] Ethylene glycol monoethyl ether 10 parts

[0137] Long-chain aliphatic hydrocarbon 2 parts

[0138] Rosin glyceride 3 parts

[0139] Zinc oxide 0.2 parts

[0140] Silicon dioxide 0.4 parts

[0141] Potassium feldspar 0.3 parts

[0142] Rosin resin 5 parts

[0143] Phenolic resin 6 parts.

[0144] Example 2

[0145] The solder alloy powder, the flux and the conductive agent, the flux comprises the following components by weight:

[0146] Ammonium chloride 12 parts

[0147] Synthetic rosin 22 parts

[0148] Diethylamine hydrochloride 6 parts

[0149] Succinic acid 3 parts

[0150] Triol amine 1.2 parts

[0151] Ethyl acetate 22 parts

[0152] Ethylene glycol monoethyl ether 11 parts

[0153] Long-chain aliphatic hydrocarbon 3 parts

[0154] Rosin glyceride 4 parts.

[0155] Preferably, the flux further comprises a surfactant, an antioxidant and a matting agent.

[0156] Preferably, the surfactant comprises the following components by weight:

[0157] Sodium succinate diethyl sulfonate 1-2 parts

[0158] Cetyltrimethylammonium bromide 0.5-0.8 parts.

[0159] Preferably, the antioxidant comprises the following components by weight:

[0160] Hydroquinone 0.3-0.5 parts

[0161] Catechol 0.3-0.6 parts;

[0162] The matting agent comprises the following components by weight:

[0163] Palmitic acid 0.3-0.6 parts.

[0164] Preferably, the solder alloy powder is SnAg3.8Cu0.7, the volume ratio of the solder alloy powder to the flux is 1:0.9, and the weight ratio of the solder alloy powder to the flux is 10:89.

[0165] Preferably, the conductive agent is composed of conductive silver powder, graphene powder, sodium dodecyl sulfate and polyvinyl silicone copolymer;

[0166] The conductive agent is prepared from the following raw materials by weight:

[0167] Conductive silver powder 3-5 parts

[0168] Graphene powder 5-7 parts

[0169] Sodium lauryl sulfate 1-2 parts

[0170] Polyvinyl silicone copolymer 2-3 parts

[0171] The flux includes the following components by weight parts as follows:

[0172] Ammonium chloride 12 parts

[0173] Synthetic rosin 22 parts

[0174] Diethylamine hydrochloride 6 parts

[0175] Succinic acid 3 parts

[0176] Triol amine 1.2 parts

[0177] Ethyl acetate 22 parts

[0178] Ethylene glycol monoethyl ether 11 parts

[0179] Long-chain aliphatic hydrocarbon 3 parts

[0180] Rosin glyceride 4 parts

[0181] Conductive silver powder 3.5 parts

[0182] Graphene powder 5.5 parts

[0183] Sodium lauryl sulfate 1.3 parts

[0184] Polyvinyl silicone copolymer 2.2 parts.

[0185] Preferably, the preparation method of the conductive agent includes:

[0186] (a) The conductive silver powder, graphene powder, sodium lauryl sulfate, polyvinyl silicone copolymer and deionized water are added to the reaction kettle in the above-mentioned proportions, heated to 40-60°C first, and the temperature is kept for 5 min. stirring, so that the raw materials of each component are mixed uniformly;

[0187] (b) Then the reaction kettle is heated to 80-110°C for 30-40 minutes, so that the raw materials of each component react in the reaction kettle, and then the required conductive agent can be obtained.

[0188] Preferably, the flux further includes a high-temperature resistant adhesive.

[0189] Preferably, the high-temperature resistant adhesive is composed of zinc oxide, silicon dioxide, potassium feldspar, rosin resin and phenolic resin;

[0190] The high-temperature resistant adhesive includes the following components by weight parts as follows:

[0191] Zinc oxide 0.2-0.6 parts

[0192] Silicon dioxide 0.4-0.7 parts

[0193] Potassium feldspar 0.3-0.6 parts

[0194] Rosin resin 5-8 parts

[0195] Phenolic resin 6-10 parts.

[0196] Preferably, the flux includes the following components in the following parts by weight:

[0197] Ammonium chloride 12 parts

[0198] Synthetic rosin 22 parts

[0199] Diethylamine hydrochloride 6 parts

[0200] Succinic acid 3 parts

[0201] Triol amine 1.2 parts

[0202] Ethyl acetate 22 parts

[0203] Ethylene glycol monoethyl ether 11 parts

[0204] Long chain aliphatic hydrocarbon 3 parts

[0205] Rosin glyceride 4 parts

[0206] Zinc oxide 0.3 parts

[0207] Silicon dioxide 0.5 parts

[0208] Potassium feldspar 0.4 parts

[0209] Rosin resin 6 parts

[0210] Phenolic resin 7 parts.

[0211] Example 3

[0212] includes solder alloy powder, flux, and conductive agent, the flux including the following components in the following parts by weight:

[0213] Ammonium chloride 14 parts

[0214] Synthetic rosin 26 parts

[0215] Diethylamine hydrochloride 8 parts

[0216] Succinic acid 3.2 parts

[0217] Triol amine 1.6 parts

[0218] Ethyl acetate 24 parts

[0219] Ethylene glycol monoethyl ether 12.5 parts

[0220] Long chain aliphatic hydrocarbon 3.5 parts

[0221] Glyceryl abietate 4.5 parts.

[0222] Preferably, the flux further comprises a surfactant, an antioxidant and a matting agent.

[0223] Preferably, the surfactant comprises the following components in the following parts by weight:

[0224] Sodium sulfonate 1-2 parts of diethyl succinate

[0225] Cetyl trimethyl ammonium bromide 0.5-0.8 parts.

[0226] Preferably, the antioxidant comprises the following components in the following parts by weight:

[0227] Hydroquinone 0.3-0.5 parts

[0228] Catechol 0.3-0.6 parts;

[0229] The matting agent comprises the following components in the following parts by weight:

[0230] Palmitic acid 0.3-0.6 parts.

[0231] Preferably, the solder alloy powder is SnAg3.8Cu0.7, the volume ratio of the solder alloy powder to the flux is 1:0.9, and the weight ratio of the solder alloy powder to the flux is 10:89.

[0232] Preferably, the conductive agent is composed of conductive silver powder, graphene powder, sodium dodecyl sulfate, and polyvinyl silicone copolymer;

[0233] The conductive agent is prepared from the following raw materials in the following parts by weight:

[0234] Conductive silver powder 3-5 parts

[0235] Graphene powder 5-7 parts

[0236] Sodium dodecyl sulfate 1-2 parts

[0237] Polyvinyl silicone copolymer 2-3 parts;

[0238] The flux comprises the following components in the following parts by weight:

[0239] Ammonium chloride 14 parts

[0240] Synthetic rosin 26 parts

[0241] Diethylamine hydrochloride 8 parts

[0242] succinic acid 3.2 parts

[0243] triol amine 1.6 parts

[0244] ethyl acetate 24 parts

[0245] ethylene glycol monoethyl ether 12.5 parts

[0246] long chain aliphatic hydrocarbon 3.5 parts

[0247] glycerol ester of rosin 4.5 parts

[0248] conductive silver powder 4.5 parts

[0249] graphene powder 6.5 parts

[0250] sodium dodecyl sulfate 1.5 parts

[0251] polyvinyl alcohol silicone copolymer 2.4 parts.

[0252] Preferably, the preparation method of the conductive agent comprises:

[0253] (a) adding the conductive silver powder, graphene powder, sodium dodecyl sulfate, polyvinyl alcohol silicone copolymer, and deionized water into the reaction kettle in the above-mentioned proportions, first heating to 40-60°C, and keeping the temperature for 5 min of continuous stirring, so that the components are mixed uniformly;

[0254] (b) then heating the reaction kettle to 80-110°C for continuous stirring, so that the components in the reaction kettle react for 30-40 min, and then the required conductive agent can be obtained.

[0255] Preferably, the flux further comprises a high-temperature resistant adhesive.

[0256] Preferably, the high-temperature resistant adhesive is composed of zinc oxide, silicon dioxide, potassium feldspar, rosin resin, and phenolic resin;

[0257] The high-temperature resistant adhesive comprises the following components in the following proportions by weight:

[0258] zinc oxide 0.2-0.6 parts

[0259] silicon dioxide 0.4-0.7 parts

[0260] potassium feldspar 0.3-0.6 parts

[0261] rosin resin 5-8 parts

[0262] phenolic resin 6-10 parts.

[0263] Preferably, the flux comprises the following components in the following proportions by weight:

[0264] Ammonium chloride 14 parts

[0265] Synthetic rosin 26 parts

[0266] Diethylamine hydrochloride 8 parts

[0267] Succinic acid 3.2 parts

[0268] Triolamine 1.6 parts

[0269] Ethyl acetate 24 parts

[0270] Ethylene glycol monoethyl ether 12.5 parts

[0271] Long chain aliphatic hydrocarbon 3.5 parts

[0272] Glyceryl abietate 4.5 parts

[0273] Zinc oxide 0.4 parts

[0274] Silicon dioxide 0.6 parts

[0275] Potassium feldspar 0.5 parts

[0276] Rosin resin 7 parts

[0277] Phenol formaldehyde resin 8 parts.

[0278] Example 4

[0279] The soldering flux includes solder alloy powder, a flux and a conductive agent, and the flux includes the following components in the following parts by weight:

[0280] Ammonium chloride 15 parts

[0281] Synthetic rosin 30 parts

[0282] Diethylamine hydrochloride 10 parts

[0283] Succinic acid 4 parts

[0284] Triolamine 2 parts

[0285] Ethyl acetate 25 parts

[0286] Ethylene glycol monoethyl ether 13 parts

[0287] Long chain aliphatic hydrocarbon 4 parts

[0288] Glyceryl abietate 5 parts.

[0289] Preferably, the flux further includes a surfactant, an antioxidant and a matting agent.

[0290] Preferably, the surfactant includes the following components in the following parts by weight:

[0291] Sodium diethyl succinate sulfonate 1-2 parts

[0292] Cetyltrimethylammonium bromide 0.5-0.8 parts.

[0293] Preferably, the antioxidant includes the following components by weight parts:

[0294] Hydroquinone 0.3-0.5 parts

[0295] Catechol 0.3-0.6 parts;

[0296] The matting agent includes the following components by weight parts:

[0297] Palmitic acid 0.3-0.6 parts.

[0298] Preferably, the solder alloy powder is SnAg3.8Cu0.7, the volume ratio of the solder alloy powder to the flux is 1:0.9, and the weight ratio of the solder alloy powder to the flux is 10:89.

[0299] Preferably, the conductive agent is composed of conductive silver powder, graphene powder, sodium dodecyl sulfate, and polyvinyl silicone copolymer.

[0300] The conductive agent is prepared from the following raw materials by weight parts:

[0301] Conductive silver powder 3-5 parts

[0302] Graphene powder 5-7 parts

[0303] Sodium dodecyl sulfate 1-2 parts

[0304] Polyvinyl silicone copolymer 2-3 parts;

[0305] The flux includes the following components by weight parts:

[0306] Ammonium chloride 15 parts

[0307] Synthetic rosin 30 parts

[0308] Diethylamine hydrochloride 10 parts

[0309] Succinic acid 4 parts

[0310] Triol amine 2 parts

[0311] Ethyl acetate 25 parts

[0312] Ethylene glycol monoethyl ether 13 parts

[0313] Long-chain aliphatic hydrocarbon 4 parts

[0314] Rosin glyceride 5 parts

[0315] Conductive silver powder 5 parts

[0316] Graphene powder 7 parts

[0317] Sodium dodecyl sulfate 2 parts

[0318] Polyvinyl silicone copolymer 3 parts.

[0319] Preferably, the preparation method of the conductive agent comprises:

[0320] (a) The conductive silver powder, graphene powder, sodium dodecyl sulfate, polyvinyl silicone copolymer and deionized water are added to the reaction kettle in the above proportions, heated to 40-60℃, and kept at this temperature for 5 min with stirring, so that the components are mixed uniformly;

[0321] (b) Then the reaction kettle is heated to 80-110℃ for 30-40 min with stirring, so that the components in the reaction kettle react, and the desired conductive agent is obtained.

[0322] Preferably, the flux further comprises a high-temperature resistant adhesive.

[0323] Preferably, the high-temperature resistant adhesive is composed of zinc oxide, silicon dioxide, potassium feldspar, rosin resin and phenolic resin;

[0324] The high-temperature resistant adhesive comprises the following components in the following weight parts:

[0325] Zinc oxide 0.2-0.6 parts

[0326] Silicon dioxide 0.4-0.7 parts

[0327] Potassium feldspar 0.3-0.6 parts

[0328] Rosin resin 5-8 parts

[0329] Phenolic resin 6-10 parts.

[0330] Preferably, the flux comprises the following components in the following weight parts:

[0331] Ammonium chloride 15 parts

[0332] Synthetic rosin 30 parts

[0333] Diethylamine hydrochloride 10 parts

[0334] Succinic acid 4 parts

[0335] Triol amine 2 parts

[0336] Ethyl acetate 25 parts

[0337] Ethylene glycol monoethyl ether 13 parts

[0338] Long-chain aliphatic hydrocarbon 4 parts

[0339] Rosin glyceride 5 parts

[0340] Zinc oxide 0.6 parts

[0341] Silicon dioxide 0.7 parts

[0342] Potassium feldspar 0.6 parts

[0343] Rosin resin 8 parts

[0344] Phenolic resin 10 parts.

[0345] Example 5

[0346] The general tin paste on the market and the special tin paste prepared by the present application in example 1, example 2, example 3 and example 4 are detected for performance, and the test performance includes shear strength:

[0347] Under high temperature conditions of 250 DEG C.

[0348]

[0349] From the above table results, the special tin paste for new energy automobile motor control driver prepared by the present application, by adding high temperature resistant adhesive in the flux, under the support of zinc oxide, silicon dioxide, potassium feldspar, rosin resin and phenolic resin, etc., the tin paste can still maintain good shear resistance in high temperature environment, the performance of the tin paste is improved, and can be used in different high temperature environments, so that the tin paste can not only obtain good high temperature resistance, but also can consider excellent shear resistance.

[0350] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application is described in detail with reference to the foregoing embodiments, for the skilled in the art, it still can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. A solder paste for a new energy vehicle motor control driver, comprising solder alloy powder, flux, and conductive agent, characterized in that: The flux comprises the following components in parts by weight: 10-15 parts ammonium chloride 20-30 parts synthetic rosin 5-10 parts of diethylamine hydrochloride 2-4 parts succinic acid 1-2 parts of triolamine 20-25 parts of ethyl acetate 10-13 parts of ethylene glycol monoethyl ether 2-4 parts of long-chain aliphatic hydrocarbons 3-5 parts of rosin glycerol ester; The solder alloy powder has the following composition: SnAg3.8Cu0.

7. The volume ratio of the solder alloy powder to the flux is 1:0.9, and the weight ratio of the solder alloy powder to the flux is 10:

89.

2. The solder paste for a new energy vehicle motor control driver according to claim 1, characterized in that: The flux also includes surfactants, antioxidants, and matting agents.

3. The solder paste for a new energy vehicle motor control driver according to claim 2, characterized in that: The surfactant comprises the following components in parts by weight: 1-2 parts of sodium diethyl succinate sulfonate 0.5-0.8 parts of hexadecyltrimethylammonium bromide.

4. The solder paste for a new energy vehicle motor control driver according to claim 2, characterized in that: The antioxidant comprises the following components in parts by weight: Hydroquinone 0.3-0.5 parts 0.3-0.6 parts of catechol; The matting agent comprises the following components in parts by weight: Palmitic acid 0.3-0.6 parts.

5. The solder paste for a new energy vehicle motor control driver according to claim 1, characterized in that: The conductive agent is composed of conductive silver powder, graphene powder, sodium dodecyl sulfate, and polyvinyl alcohol silicone copolymer. The conductive agent is prepared from the following raw materials in parts by weight: 3-5 parts of conductive silver powder 5-7 parts graphene powder 1-2 parts of sodium dodecyl sulfate 2-3 parts of polyvinyl alcohol silicone copolymer; The flux comprises the following components in parts by weight: 10-15 parts ammonium chloride 20-30 parts synthetic rosin 5-10 parts of diethylamine hydrochloride 2-4 parts succinic acid 1-2 parts of triolamine 20-25 parts of ethyl acetate 10-13 parts of ethylene glycol monoethyl ether 2-4 parts of long-chain aliphatic hydrocarbons 3-5 parts of rosin glyceryl ester 3-5 parts of conductive silver powder 5-7 parts graphene powder 1-2 parts of sodium dodecyl sulfate 2-3 parts of polyvinyl alcohol silicone copolymer.

6. The solder paste for a new energy vehicle motor control driver according to claim 5, characterized in that: The method for preparing the conductive agent includes: (a) Add conductive silver powder, graphene powder, sodium dodecyl sulfate, polyvinyl alcohol silicone copolymer and deionized water to the reaction vessel according to the above proportions, heat to 40-60°C, and maintain this temperature for 5 minutes to ensure that the raw materials are mixed evenly. (b) The reactor is then heated to 80-110°C and stirred continuously to allow the raw materials to react in the reactor for 30-40 minutes, thereby obtaining the desired conductive agent.

7. The solder paste for a new energy vehicle motor control driver according to claim 1, characterized in that: The flux also includes a high-temperature resistant adhesive.

8. The solder paste for a new energy vehicle motor control driver according to claim 7, characterized in that: The high-temperature resistant adhesive is composed of zinc oxide, silicon dioxide, potassium feldspar, rosin resin and phenolic resin; The high-temperature resistant adhesive comprises the following components in the following parts by weight: 0.2-0.6 parts zinc oxide 0.4-0.7 parts of silicon dioxide Potassium feldspar 0.3-0.6 parts 5-8 parts rosin resin 6-10 parts of phenolic resin.

9. The solder paste for a new energy vehicle motor control driver according to claim 8, characterized in that: The flux comprises the following components in parts by weight: 10-15 parts ammonium chloride 20-30 parts synthetic rosin 5-10 parts of diethylamine hydrochloride 2-4 parts succinic acid 1-2 parts of triolamine 20-25 parts of ethyl acetate 10-13 parts of ethylene glycol monoethyl ether 2-4 parts of long-chain aliphatic hydrocarbons 3-5 parts of rosin glyceryl ester 0.2-0.6 parts zinc oxide 0.4-0.7 parts of silicon dioxide Potassium feldspar 0.3-0.6 parts 5-8 parts rosin resin 6-10 parts of phenolic resin.

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