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The award-winning Phase Change Matters blog tracks the latest news and research on phase change materials and thermal energy storage. E-mail tips and comments to Ben Welter, communications director at Entropy Solutions. Follow the blog on Twitter at @PureTemp. Subscribe to the weekly PCM newsletter. Or join the discussion on LinkedIn.

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Patent application: Use of a composite material for heat management

Ben Welter - Monday, July 09, 2018

U.S. patent application 20180187977 (applicant SGL Carbon SE, Wiesbaden, Germany):

"The use of a composite material for heat management in the electrical and/or electronic area, in particular in a car. A grid-like structure filled with a phase change material (PCM), and to a composite material that includes a grid-like structure filled with PCM. The filled grid-like structure being present on a cover layer or between two cover layers."

http://www.freepatentsonline.com/20180187977.pdf

Patent application: Lightweight composite overwrapped pressure vessels with sectioned liners

Ben Welter - Monday, July 02, 2018

U.S. patent application 20180180221 (applicant Steelhead Composites LLC, Golden, Colo.):

"The present invention provides a lightweight high pressure vessels that are made from a liner or a liner housing that is overwrapped with a composite material. Unlike conventional high pressure vessels, the lightweight high pressure vessel of the invention includes a liner that comprises a plurality of liner sections without using welding or crimping. In particular, the lightweight high pressure vessels of the invention include a plurality of elements that are combined to form a liner housing and a composite overwrap that provides structural and mechanical strength to maintain integrity of the high pressure vessel. In one particular embodiment, the high pressure vessel of the invention is a diaphragm accumulator. ... [In some embodiments] interior of said accumulator comprises a phase changing material."

http://www.freepatentsonline.com/20180180221.pdf

Patent application: Gel cosmetic applicator

Ben Welter - Monday, July 02, 2018

Gel applicator patent drawing

U.S. patent application 20180177280 (applicant HCT Group Holdings Ltd., China):

"Cosmetics packaging and applicators including a gel based tip are described. Gel applicators may or may not be provided with a through-hole. In various embodiments, the gel may be a stand-alone gel or may be encapsulated in a membrane. The gel applicator provides a soft feel and may have cooling effect as well. In some embodiments, the applicator is mounted to a platform or a hollow insert and coupled to a container housing the cosmetics product. ... The gel may also include phase change materials which are useful in conveying the cooling sensation, since phase change materials, by definition absorb heat energy when changing phases."

http://www.freepatentsonline.com/20180177280.pdf

Patent application: Heating control method and heating control device for battery structure

Ben Welter - Monday, July 02, 2018

U.S. patent application 20180183115 (applicant Contemporary Amperex Technology Co. Ltd., Ningde, China):

"A battery system, comprising a battery structure, a heating assembly, and the heating control device according to claim 7, wherein the heating control device is electrically connected with the heating assembly and the battery structure to form a control circuit, and the heating assembly is configured to heat the battery structure under control of the heating control device. ... Preferably, the heating assembly includes a heater, and a resistance of the heater increases as a temperature of the heater increases. Preferably, the heating assembly further includes a phase change material, the heater contacts with the phase change material, the phase change material is capable of changing phase at a phase change temperature, and heat generated by the heater is conducted to the battery structure via the phase change material."

http://www.freepatentsonline.com/20180183115.pdf

Patent application: Protective headgear comprising temperature control apparatus

Ben Welter - Monday, June 25, 2018

U.S. patent application 20180160761 (applicant Aspire Zone Foundation, Doha, Qatar):

Protective headgear patent drawing"A protective headgear, such as a hard hat, is provided that comprises a protective outer shell, which surrounds the head of a wearer and in so doing defines a space between the head of the wearer and the underside of the outer shell; a heat-absorbing member; and a forced air ventilation apparatus. In use, the heat-absorbing member is positioned within the outer shell in the space formed between the head of the wearer and the outer shell, so that the forced air ventilation apparatus can provide a flow of ambient air from outside of the outer shell over the heat-absorbing pad within the space between the head of the wearer and the underside of the outer shell, thereby creating a cooling circulation of air around the head and face of the wearer. Suitably, the heat-absorbing pad comprises a phase-change material (PCM)."

http://www.freepatentsonline.com/20180160761.pdf

Patent application: Heat exchanging thermal liquid container

Ben Welter - Monday, June 25, 2018

Drinkware patent drawingU.S. patent application 20180171197 (assignee Curators of the University of Missouri, Columbia, Mo.):

"A heat exchanging thermal liquid container system that comprises a main body at least partially defining a liquid reservoir structured and operable to retain a liquid, and a phase change material (PCM) liner comprising a PCM liner PCM having a selected melting temperature, and/or at least one PCM pod. Each of the at least one PCM pod(s) comprising a respective PCM pod PCM having a respective selected melting temperature. Wherein the PCM liner and/or the at least one PCM pod are disposable within the liquid reservoir such that when a liquid is disposed within the liquid reservoir the liquid will contact at least one of the PCM liner and the at least one PCM pod such that thermal energy can be exchanged between the liquid and the respective at least one of the PCM liner PCM and the at least one PCM pod PCM."

http://www.freepatentsonline.com/20180171197.pdf

Related: Drinkware and plateware and active temperature control module for same (Ember Technologies Inc.)

Patent application: System and method of heat management for vehicle

Ben Welter - Monday, June 11, 2018

U.S. patent application 20180156146 (applicants Hyundai Motor Co. and Kia Motors Corp., Seoul, South Korea):

"A system of heat management of a vehicle may include a cooling line in which coolant cooling an engine flows therethrough; an exhaust heat retrieving apparatus for retrieving heat of exhaust gas discharged from a combustion chamber of the engine through operation fluid; a heat storage apparatus which stores heat of exhaust gas retrieved by the exhaust heat retrieving apparatus using the operation fluid and includes phase change material; a coolant heat exchanger in which heat stored in the heat storage apparatus and the coolant are heat-exchanged; a driving information detector for detecting a driving information including a temperature of the coolant and a temperature of the phase change material; and a controller for controlling the temperature of the coolant through the exhaust heat retrieving apparatus or the heat storage apparatus based on the temperature of the coolant and the temperature of the phase change material when the vehicle starts."

http://www.freepatentsonline.com/20180156146.pdf

Related patent applications:

Method and system for exhaust heat recovery (Ford Global Technologies)
HVAC systems for electrically powered vehicles (BorgWarner Inc.)

Patent application: Thermal solution for prismatic lithium ion battery pack

Ben Welter - Monday, June 11, 2018

U.S. patent application 20180159189 (applicant Advanced Energy Technologies LLC, Lakewood, Ohio):

"A lithium ion battery pack includes a plurality of prismatic lithium polymer cells and one or more graphite heat spreaders. Each spreader has at least two major surfaces and is made of one of a sheet of a compressed mass of exfoliated graphite particles, a graphitized polyimide sheet, or combinations thereof. ... In any of the above embodiments, at least one of the spaces between adjacent heat spreaders 36 or between the heat spreader 36 and an adjacent cell 32 may be at least partially filled with a layer of a phase change material."

http://www.freepatentsonline.com/20180159189.pdf

Patent application: Thermal energy storage with enhanced transition array

Ben Welter - Monday, June 11, 2018

U.S. patent application 20180156546 (inventors Najih Naser, Abdel-Rahman Naser and Amna Naser, Cary, N.C.)

"This invention represents a significant improvement and solution to slow crystallization rates and phase transition of thermal storage materials. The primary objective is to produce highly responsive, thin, light weight storage panels with high thermal mass and efficient thermal charging and discharging of energy for use in building spaces, walls, ceilings, floor boards, underlayment flooring, strategic heat storage walls (fireplaces and kitchen areas), positively impact low thermal mass and light weight buildings as well as the exterior thermal envelope including siding boards and stone veneer. Such applications can reduce costs of heating and air conditioning while enhancing occupant comfort with a cooling effect and reduction in temperature swings."

http://www.freepatentsonline.com/20180156546.pdf

Patent application: Phase change material for use in non-food and food applications

Ben Welter - Monday, June 11, 2018

U.S. patent application 20180155595 (applicant DuPont Nutrition Biosciences, Copenhagen, Denmark): 

"This invention describes a phase change material being 1,3-propanediol ester where the 1,3-propanediol ester can be either a 1,3-propanediol monoester or a 1,3-propanediol diester. This invention further describes the use of 1,3-propanediol ester as a phase change material for releasing or absorbing latent heat during melting or crystallization. This invention also describes the use of the phase change material for use in non-food and food applications."

http://www.freepatentsonline.com/20180155595.pdf