Immersion-type heat radiation cooling liquid used for power lithium batteries, and preparation method thereof

Abstract

The invention discloses an immersion-type heat radiation cooling liquid used for power lithium batteries, and a preparation method thereof, and belongs to the field of chemistry. The immersion-type heat radiation cooling liquid used for power lithium batteries is composed of, by weight, 30 to 70 parts of a hydrofluoroether compound, 30 to 50 parts of a halogenated hydrocarbon, 1 to 10 parts of analcohol compound, 0.01 to 0.5 part of an antioxidant, 0.01 to 0.5 part of a preservative, and 0.01 to 0.5 part of a nano metal oxide. According to the preparation method, the hydrofluoroether compoundis taken as a main component, and is mixed with the halogenated hydrocarbon, the alcohol compound, and the like to form an azeotrope, and the antioxidant, the preservative, and the non-conductive nano metal oxide additives are adopted as auxiliary additives to form the cooling liquid composition. The immersion-type heat radiation cooling liquid is excellent in heat radiation effect, is high in specific heat, low in expansion performance, low in toxicity, high in insulation performance, excellent in flame resistance, inert performance, and material compatibility, is capable of realizing heat transfer effect rapidly, is capable of solving power lithium battery heating and heat radiation problems effectively, prolonging battery service life, reducing failure risk, and improving battery safety performance.

Description

Technical field

[0001] The invention relates to the field of chemical engineering, in particular to an immersion type heat dissipation coolant for power lithium batteries and a preparation method thereof. Background technique

[0002] With the rapid development of new energy vehicles, the application of power lithium batteries has become more extensive, but at the same time they are also facing a series of urgent problems, such as the reduction of battery life, reliability and safety due to battery heating. Lithium battery cooling technology mainly includes indirect cooling technology and direct cooling technology. The existing power lithium battery mainly adopts indirect cooling modes such as natural cooling, air cooling, and pipeline liquid cooling. This type of cooling technology can be used to a certain extent. It alleviates the heat dissipation problem of the battery, but it is not enough to meet the heat dissipation requirements of the high heat flow density power lithium b...

Examples

Embodiment 1

[0031] Example 1: An immersed heat dissipation coolant for power lithium batteries, which is composed of the following formula with a weight ratio: 1,1,2,2-tetrafluoroethyl-2,2,2-trifluoroethyl ether ( HFE-347): 55 parts; 1,1-dichloroethane: 42 parts; methanol: 2 parts; phenol: 0.05 parts; benzotriazole: 0.1 parts; nano-titanium dioxide: 0.02 parts; nano-alumina: 0.03 parts .

[0032] The preparation method of the above-mentioned submerged cooling liquid for power lithium battery is as follows:

[0033] 1. Add 55 parts of 1,1,2,2-tetrafluoroethyl-2,2,2-trifluoroethyl ether (HFE-347) into a reactor equipped with a stirring device, and keep the room temperature around 25℃.

[0034] 2. Turn on the stirring, add 42 parts of 1,1-dichloroethane and 2 parts of methanol while stirring, and stir for about 15 minutes to form an azeotrope.

[0035] 3. After preparing the hydrofluoroether azeotrope in step 2, add 0.05 part of phenol and 0.1 part of benzotriazole in sequence, and stir for about 1...

Embodiment 2

[0038] Example 2: An immersed heat dissipation coolant for power lithium batteries, which is composed of the following formula with a weight ratio: 1,1,2,2-tetrafluoroethyl ethyl ether: 65 parts; 1,1-dichloro Ethane: 32 parts; methanol: 2.5 parts; phenol: 0.05 parts; benzotriazole: 0.1 parts; nano-zinc oxide: 0.2 parts; nano-alumina: 0.15 parts.

[0039] The preparation method of the above-mentioned submerged cooling liquid for power lithium battery is as follows:

[0040] 1. Add 65 parts of 1,1,2,2-tetrafluoroethyl ethyl ether into a reactor equipped with a stirring device and keep the room temperature at about 25°C.

[0041] 2. Turn on the stirring, add 32 parts of 1,1-dichloroethane and 2.5 parts of methanol while stirring, and stir for about 15 minutes to form an azeotrope.

[0042] 3. After preparing the hydrofluoroether azeotrope in step 2, add 0.05 part of phenol and 0.1 part of benzotriazole in sequence, and stir for about 15 minutes respectively.

[0043] 4. Add 0.2 parts of n...

Embodiment 3

[0045] Example 3: An immersed heat dissipation coolant for power lithium batteries, composed of the following formula with a weight ratio: 1,1,1,2,3,3-hexafluoro-3-methoxypropane (HFE-356mec ): 75 parts; 1,1-dichloroethane: 22 parts; methanol: 2.8 parts; phenol: 0.05 parts; benzotriazole: 0.1 parts; nano-titania: 0.02 parts; nano-alumina: 0.03 parts.

[0046] The preparation method of the above-mentioned submerged cooling liquid for power lithium battery is as follows:

[0047] 1. Add 75 parts of 1,1,1,2,3,3-hexafluoro-3-methoxypropane (HFE-356mec) into a reactor equipped with a stirring device, and keep the room temperature around 25℃.

[0048] 2. Turn on the stirring, add 22 parts of 1,1-dichloroethane and 2.8 parts of methanol while stirring, and stir for about 15 minutes to form an azeotrope.

[0049] 3. After preparing the hydrofluoroether azeotrope in step 2, add 0.05 part of phenol and 0.1 part of benzotriazole in sequence, and stir for about 15 minutes respectively.

[0050] 4....

Technical field

[0001] The invention relates to the field of chemical engineering, in particular to an immersion type heat dissipation coolant for power lithium batteries and a preparation method thereof. Background technique

[0002] With the rapid development of new energy vehicles, the application of power lithium batteries has become more extensive, but at the same time they are also facing a series of urgent problems, such as the reduction of battery life, reliability and safety due to battery heating. Lithium battery cooling technology mainly includes indirect cooling technology and direct cooling technology. The existing power lithium battery mainly adopts indirect cooling modes such as natural cooling, air cooling, and pipeline liquid cooling. This type of cooling technology can be used to a certain extent. It alleviates the heat dissipation problem of the battery, but it is not enough to meet the heat dissipation requirements of the high heat flow density power lithium b...

Examples

Embodiment 1

[0031] Example 1: An immersed heat dissipation coolant for power lithium batteries, which is composed of the following formula with a weight ratio: 1,1,2,2-tetrafluoroethyl-2,2,2-trifluoroethyl ether ( HFE-347): 55 parts; 1,1-dichloroethane: 42 parts; methanol: 2 parts; phenol: 0.05 parts; benzotriazole: 0.1 parts; nano-titanium dioxide: 0.02 parts; nano-alumina: 0.03 parts .

[0032] The preparation method of the above-mentioned submerged cooling liquid for power lithium battery is as follows:

[0033] 1. Add 55 parts of 1,1,2,2-tetrafluoroethyl-2,2,2-trifluoroethyl ether (HFE-347) into a reactor equipped with a stirring device, and keep the room temperature around 25℃.

[0034] 2. Turn on the stirring, add 42 parts of 1,1-dichloroethane and 2 parts of methanol while stirring, and stir for about 15 minutes to form an azeotrope.

[0035] 3. After preparing the hydrofluoroether azeotrope in step 2, add 0.05 part of phenol and 0.1 part of benzotriazole in sequence, and stir for about 1...

Embodiment 2

[0038] Example 2: An immersed heat dissipation coolant for power lithium batteries, which is composed of the following formula with a weight ratio: 1,1,2,2-tetrafluoroethyl ethyl ether: 65 parts; 1,1-dichloro Ethane: 32 parts; methanol: 2.5 parts; phenol: 0.05 parts; benzotriazole: 0.1 parts; nano-zinc oxide: 0.2 parts; nano-alumina: 0.15 parts.

[0039] The preparation method of the above-mentioned submerged cooling liquid for power lithium battery is as follows:

[0040] 1. Add 65 parts of 1,1,2,2-tetrafluoroethyl ethyl ether into a reactor equipped with a stirring device and keep the room temperature at about 25°C.

[0041] 2. Turn on the stirring, add 32 parts of 1,1-dichloroethane and 2.5 parts of methanol while stirring, and stir for about 15 minutes to form an azeotrope.

[0042] 3. After preparing the hydrofluoroether azeotrope in step 2, add 0.05 part of phenol and 0.1 part of benzotriazole in sequence, and stir for about 15 minutes respectively.

[0043] 4. Add 0.2 parts of n...

Embodiment 3

[0045] Example 3: An immersed heat dissipation coolant for power lithium batteries, composed of the following formula with a weight ratio: 1,1,1,2,3,3-hexafluoro-3-methoxypropane (HFE-356mec ): 75 parts; 1,1-dichloroethane: 22 parts; methanol: 2.8 parts; phenol: 0.05 parts; benzotriazole: 0.1 parts; nano-titania: 0.02 parts; nano-alumina: 0.03 parts.

[0046] The preparation method of the above-mentioned submerged cooling liquid for power lithium battery is as follows:

[0047] 1. Add 75 parts of 1,1,1,2,3,3-hexafluoro-3-methoxypropane (HFE-356mec) into a reactor equipped with a stirring device, and keep the room temperature around 25℃.

[0048] 2. Turn on the stirring, add 22 parts of 1,1-dichloroethane and 2.8 parts of methanol while stirring, and stir for about 15 minutes to form an azeotrope.

[0049] 3. After preparing the hydrofluoroether azeotrope in step 2, add 0.05 part of phenol and 0.1 part of benzotriazole in sequence, and stir for about 15 minutes respectively.

[0050] 4....