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A kind of cooling liquid for power battery and its preparation method and application

A power battery and coolant technology, applied in secondary batteries, circuits, electrical components, etc., can solve the problems of unbalanced performance of power battery modules, complicated system maintenance, shortened battery life, etc., to improve cooling efficiency or Space compactness, simple preparation process, and the effect of reducing the working temperature

Active Publication Date: 2019-11-26
SHENZHEN XUANDING IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this will cause a large amount of heat generated by the power battery pack during the working process to be unable to be discharged smoothly and quickly, resulting in a sharp rise in the temperature of the power battery. Working at a higher temperature for a long time will shorten the battery life and reduce battery performance; The long-term uneven distribution of the temperature field in the battery box will cause the unbalanced performance of each power battery module and monomer, and then affect the performance of the entire power battery system
The existing coolant has a certain cooling effect, but the cooling effect is not good, and the usage is high, and the system maintenance is complicated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] In the embodiment of the present invention, a cooling liquid for power batteries comprises the following raw materials: 1 kg of bis(hydroxymethyl) imidazolidinyl urea, 7 kg of nano barium sulfate, 33 kg of propylene glycol, 5 kg of graphite tailings, 11 kg of sodium o-nitrophenolate, Chloroplatinic acid 3kg, water 45kg.

[0023] Mix chloroplatinic acid with 4 times its mass of deionized water to prepare a chloroplatinic acid solution. Crush the graphite tailings, pass through a 150-mesh sieve, then mix with chloroplatinic acid solution, raise the temperature to 75°C and stir at this temperature for 1.8 hours, filter to remove the filtrate, take the precipitate, wash and dry to obtain the mixture A . The mixture A was calcined at 420° C. for 3 h under the protection of helium, and the mixture B was obtained after cooling. Mix mixture B with bis(hydroxymethyl) imidazolidinyl urea, nano-barium sulfate, propylene glycol, sodium o-nitrophenolate, and water and stir at a st...

Embodiment 2

[0026] In the embodiment of the present invention, a cooling liquid for power batteries comprises the following raw materials: 5 kg of bis(hydroxymethyl) imidazolidinyl urea, 15 kg of nano barium sulfate, 41 kg of propylene glycol, 12 kg of graphite tailings, 19 kg of sodium o-nitrophenolate, Chloroplatinic acid 7kg, water 55kg.

[0027] Chloroplatinic acid solution was prepared by mixing chloroplatinic acid with 5 times its mass of deionized water. Crush the graphite tailings, pass through a 200-mesh sieve, mix with chloroplatinic acid solution, raise the temperature to 78°C and stir at this temperature for 2 hours, remove the filtrate by filtration, take the precipitate, wash and dry to obtain mixture A. The mixture A was calcined at 420° C. for 4 h under the protection of nitrogen, and the mixture B was obtained after cooling. Mix mixture B with bis(hydroxymethyl) imidazolidinyl urea, nano-barium sulfate, propylene glycol, sodium o-nitrophenolate, and water and stir at a s...

Embodiment 3

[0030] In the embodiment of the present invention, a cooling liquid for power batteries comprises the following raw materials: 2 kg of bis(hydroxymethyl) imidazolidinyl urea, 9 kg of nano barium sulfate, 35 kg of propylene glycol, 7 kg of graphite tailings, 13 kg of sodium o-nitrophenolate, Chloroplatinic acid 4kg, water 48kg.

[0031] Chloroplatinic acid solution was prepared by mixing chloroplatinic acid with 4.5 times the mass of deionized water. Crush the graphite tailings, pass through a 200-mesh sieve, then mix with chloroplatinic acid solution, heat up to 76°C and stir at this temperature for 1.9h, filter to remove the filtrate, take the precipitate, wash and dry to obtain the mixture A . The mixture A was calcined at 420° C. for 3.5 h under the protection of argon, and the mixture B was obtained after cooling. Mix mixture B with bis(hydroxymethyl) imidazolidinyl urea, nano-barium sulfate, propylene glycol, sodium o-nitrophenolate, and water and stir at a stirring spe...

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Abstract

The invention discloses a coolant used for a power battery and a preparation method and an application of the coolant. The coolant comprises the following raw materials in parts by weight: 1-5 parts of bis(hydroxymethyl) imidazolidinyl urea, 7-15 parts of nanometer barium sulfate, 33-41 parts of propylene glycol, 5-12 parts of graphite tailings, 11-19 parts of sodium 2-nitrophenol, 3-7 parts of chloroplatinic acid and 45-55 parts of water. The graphite tailings are smashed to be mixed, heated and stirred with a chloroplatinic acid solution, and then filtering is performed to remove filtrate; the precipitate is taken, washed, dried and calcined to obtain a mixture B; the mixture B is mixed and stirred with bis(hydroxymethyl) imidazolidinyl urea, nanometer barium sulfate, propylene glycol, sodium 2-nitrophenol and water; in a sealing condition, ultrasonic treatment is performed on the mixture at a temperature of 55-60 DEG C, and then standing is performed, and finally, ultrasonic treatment is performed at a temperature of 5-10 DEG C. The coolant disclosed in the invention is used for cooling of the power battery, and the effect of the coolant is obviously better that in the prior art, so that heat release of the power battery module can be accelerated.

Description

technical field [0001] The invention relates to the technical field of battery materials, in particular to a cooling liquid for a power battery and a preparation method and application thereof. Background technique [0002] The power battery is the power source that provides the power source for the tool, and mostly refers to the battery that provides power for electric vehicles, electric trains, electric bicycles, and golf carts. It is mainly different from the starter battery used to start the car engine. Valve-port sealed lead-acid batteries, open tubular lead-acid batteries and lithium iron phosphate batteries are mostly used. As the carrier of chemical electric energy, the power battery is a key component for the normal operation of many devices and devices, which directly affects the performance of devices and devices. In actual use, in order to obtain a high performance / space ratio, power battery packs are often arranged relatively closely. However, this will cause...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/613H01M10/625H01M10/653H01M10/6567
CPCH01M10/613H01M10/625H01M10/653H01M10/6567Y02E60/10
Inventor 何辉
Owner SHENZHEN XUANDING IND CO LTD
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