CN203238213U - Phase change paraffin microcapsule for battery heat management - Google Patents
Phase change paraffin microcapsule for battery heat management Download PDFInfo
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- CN203238213U CN203238213U CN201320255319XU CN201320255319U CN203238213U CN 203238213 U CN203238213 U CN 203238213U CN 201320255319X U CN201320255319X U CN 201320255319XU CN 201320255319 U CN201320255319 U CN 201320255319U CN 203238213 U CN203238213 U CN 203238213U
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- phase change
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- heat management
- paraffin
- paraffin microcapsule
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Abstract
The utility model belongs to the field of storage batteries, relates to the field of battery heat management based on phase change material, and particularly relates to a phase change paraffin microcapsule for battery heat management. The phase change paraffin microcapsule has a shell structure, an inner shell layer is wrapped by an outer shell layer, the outer shell layer is made of styrene-methyl benzene olefine acid methyl ester copolymer, and the inner shell layer is made of paraffin organic liquid solid phase change material. The phase change paraffin microcapsule is not easy to leak and expand in volume when in phase change, can be widely used in battery heat management systems, substitutes for the traditional heat management manner taking air or water as the cooling medium, the temperature of the battery in running is greatly lowered, and the property and service life of the battery are guaranteed.
Description
Technical field
The utility model belongs to the store battery field, relates to the battery thermal management field based on phase change material, relates in particular to the phase change paraffin microcapsule for battery thermal management.
Background technology
Because energy shortage and environmental pollution are serious, electromobile and hybrid vehicle enjoy current new energy field to pay close attention to, and power cell equipment is the most key parts of electromobile and hybrid vehicle, and its dynamic property, life-span etc. have determined cost and the performance of whole vehicle.Battery use optimum temps be 10 ~ 50 ℃, battery pile is carried out in the discharge process of actual motion, the temperature that produces but can be up to more than 100 ℃, the temperature that causes of charge and discharge process is unbalanced in addition, these all are the major causes that causes series of cells to lose efficacy.Therefore, the battery management system that comprises thermal management unit becomes and determines electromobile and the business-like gordian technique of hybrid power automobile battery.
No matter be from technical standpoint energy-conservation, that improve the vehicle continual mileage, or from the miniaturization of vehicle, microminiaturized trend, traditional heat management system take air, water as heat-eliminating medium is all so that whole system is heavy, complicated.In recent years, the heat management system of employing phase change material has caused the concern of many electromobile production firms and battery manufacturers.Application publication number is that the Chinese invention patent of CN102364747A discloses a kind of storage battery temperature management system based on phase change material.Application publication number is that the Chinese invention patent of CN102181270A discloses and a kind ofly meets phase change material and device for heat dissipation of lithium battery.Application publication number is that U.S.'s patent of invention of CN1418373A discloses a kind of equipment for passive phase change thermal management and method.Application publication number is a kind of composite phase-change material and device for the silica-based solar cell heat radiation of the Chinese invention patent of CN102509741A.These patents have all proposed to utilize phase change material that energy storage system is carried out heat management, the phase change material that relates to mainly is paraffin, aliphatic saturated hydrocarbon etc., because the phase change material such as paraffin has the problems such as the leakage of liquid and volumetric expansion when undergoing phase transition, thereby reduce the battery heat dispersion, affect dynamic property and the life-span of battery.
The utility model content
In order to overcome the prior art deficiency, the utility model provides a kind of phase change paraffin microcapsule for battery thermal management, described phase change paraffin microcapsule heat storage performance is good, can greatly reduce the running cost of battery thermal management system, the problem that phase change material leakage and volumetric expansion can not occur, and its preparation method is simple, and with low cost, productive rate is high, is convenient to a large amount of synthetic.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is as follows:
A kind of phase change paraffin microcapsule for battery thermal management, described phase change paraffin microcapsule are shell structure, outer shell parcel inner sandwich layer, described outer shell is to be made of vinylbenzene-methylbenzene olefin(e) acid methyl terpolymer, described inner sandwich layer is to be made of the organic solid-liquid phase change material of paraffin class.
Series of cells is immersed in the phase change paraffin microcapsule, as the organic solid-liquid phase change absorbed of the paraffin class of inner sandwich layer battery liberated heat battery temperature is reduced rapidly, the organic solid-liquid phase change material of paraffin class is after absorbing the battery liberated heat, undergo phase transition, become liquid from solid state transformation, but can't flow out owing to the vinylbenzene that is used as outer shell-methylbenzene olefin(e) acid methyl terpolymer parcel, so dispersed fine between the phase change paraffin microcapsule granule, the integral body that phase change material can not occur is leaked and Study of Volume Expansion.
Preferably, the mass percent of the organic solid-liquid phase change material of material paraffin class of the material of described outer shell vinylbenzene-methylbenzene olefin(e) acid methyl terpolymer and inner sandwich layer is 1:0.8 ~ 2.
Outer shell vinylbenzene described in the utility model-methylbenzene olefin(e) acid methyl terpolymer can be made by following methods:
The first step is 1:2 in mass ratio, gets vinylbenzene, methylbenzene olefin(e) acid methyl esters; And get initiator according to 0.5% of above-mentioned raw materials total mass, described initiator is: Diisopropyl azodicarboxylate or dibenzoyl peroxide;
Second step, above-mentioned raw materials and initiator are joined in the reaction vessels, it is in the nitrogen environment, and successively at 80 ℃ of thermostatically heating 30 ~ 50min, 60 ℃ of thermostatically heating 3 ~ 5h and 100 ℃ of thermostatically heating 1 ~ 2h, obtains vinylbenzene-methylbenzene olefin(e) acid methyl terpolymer;
The utility model compared with prior art, has following advantage: be difficult for when the utility model undergoes phase transition leaking and volumetric expansion, can be widely used in battery thermal management system, replacing traditional air or water is the heat management of heat-eliminating medium, temperature when greatly reducing battery operation, performance and the life-span of assurance battery.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is cross-sectional view of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
As shown in Figure 1, 2, the utility model is shell structure, and the organic solid-liquid phase change material of paraffin class is inner sandwich layer 2, is consisted of outer shell 1 parcel by vinylbenzene-methylbenzene olefin(e) acid methyl terpolymer.
Concrete preparation method is as follows for the utility model:
The first step takes by weighing vinylbenzene 2.00g, methylbenzene olefin(e) acid methyl esters 4.00g; Take by weighing Diisopropyl azodicarboxylate 0.03g;
Second step, vinylbenzene, methyl methacrylate, the Diisopropyl azodicarboxylate that takes by weighing joined in the single port flask, and after being placed in the nitrogen environment, place successively 80 ℃, 60 ℃ and 100 ℃ of thermostat water baths, carry out respectively 60 ℃ of thermostatically heating of 80 ℃ of thermostatically heating, 4h of 40min and 100 ℃ of thermostatically heating of 1.5h, reaction obtains vinylbenzene-methylbenzene olefin(e) acid methyl terpolymer;
The 3rd goes on foot, and measures the ethyl acetate of 55mL, joins in the multipolymer of second step gained, fully after the dissolving, obtains solution A;
The 4th step, press 150% of second step gained copolymer quality, take by weighing paraffin phase change material and heating and melting after, go on foot the gained solution A and mix with the 3rd, obtain solution B;
The 5th step, get 0.01g tween-80,0.015g styrene-maleic anhydride copolymer and 15mL mass percent and be 0.5% polyvinyl alcohol, to wherein adding the 120mL deionized water, be heated to dissolving, obtain the composite emulsifying agent solution;
The 6th step, the 4th step gained solution B is mixed with the 5th step gained composite emulsifying agent solution, homogenizing emulsifying obtains white emulsion;
The 7th step was stirred to cosolvent with the 6th step gained white emulsion and finishes evaporation in 40 ℃ thermostat water bath, form the microcapsule of ad hoc structure thereby be separated;
The 8th step, the 7th step products therefrom is carried out vacuum filtration, drying, namely get the phase change paraffin microcapsule for battery thermal management.
During work, series of cells is immersed in the utility model, inner sandwich layer 2 in the utility model absorbs the battery liberated heat and battery temperature is reduced rapidly, inner sandwich layer 2 is after absorbing the battery liberated heat, undergo phase transition, become liquid as the organic solid-liquid phase change material of the paraffin class of inner sandwich layer 2 from solid state transformation, but owing to can't be flowed out by outer shell 1 parcel, so the whole leakage volume swelling of phase change material can not appear in dispersed fine between the phase change paraffin microcapsule granule.
Need to prove, the above embodiment is to the explanation of technical solutions of the utility model and unrestricted, other modification that is equal to replacement or makes according to prior art of affiliated technical field those of ordinary skill, as long as do not exceed thinking and the scope of technical solutions of the utility model, all should be included within the desired interest field of the utility model.
Claims (2)
1. phase change paraffin microcapsule that are used for battery thermal management, it is characterized in that: described phase change paraffin microcapsule are shell structure, outer shell parcel inner sandwich layer, described outer shell is to be made of vinylbenzene-methylbenzene olefin(e) acid methyl terpolymer, and described inner sandwich layer is to be made of the organic solid-liquid phase change material of paraffin class.
2. phase change paraffin microcapsule for battery thermal management as claimed in claim 1, it is characterized in that: the mass percent of the organic solid-liquid phase change material of material paraffin class of the material vinylbenzene of described outer shell-methylbenzene olefin(e) acid methyl terpolymer and inner sandwich layer is 1:0.8 ~ 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320255319XU CN203238213U (en) | 2013-05-13 | 2013-05-13 | Phase change paraffin microcapsule for battery heat management |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320255319XU CN203238213U (en) | 2013-05-13 | 2013-05-13 | Phase change paraffin microcapsule for battery heat management |
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| Publication Number | Publication Date |
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| CN203238213U true CN203238213U (en) | 2013-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320255319XU Expired - Lifetime CN203238213U (en) | 2013-05-13 | 2013-05-13 | Phase change paraffin microcapsule for battery heat management |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103265933A (en) * | 2013-05-13 | 2013-08-28 | 三门峡速达交通节能科技股份有限公司 | Phase-change paraffin microcapsules for battery heat management and preparation method thereof |
| CN112151905A (en) * | 2019-06-28 | 2020-12-29 | 陈鸿文 | High-stability heat-dissipation battery pack structure |
| CN115064823A (en) * | 2022-05-30 | 2022-09-16 | 珠海冠宇电池股份有限公司 | Battery with a battery cell |
-
2013
- 2013-05-13 CN CN201320255319XU patent/CN203238213U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103265933A (en) * | 2013-05-13 | 2013-08-28 | 三门峡速达交通节能科技股份有限公司 | Phase-change paraffin microcapsules for battery heat management and preparation method thereof |
| CN112151905A (en) * | 2019-06-28 | 2020-12-29 | 陈鸿文 | High-stability heat-dissipation battery pack structure |
| CN115064823A (en) * | 2022-05-30 | 2022-09-16 | 珠海冠宇电池股份有限公司 | Battery with a battery cell |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131016 |