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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: Phase change compositions

Ben Welter - Thursday, August 23, 2018

U.S. patent application 20180237676 (applicant Sunamp Ltd., Edinburgh, Scotland):

"There are herein described phase change materials containing sodium acetate trihydrate having improved homogeneity, a process for the preparation of said materials, and their utility in phase change systems. More particularly, the present invention relates to the use of phase change compositions comprising sodium acetate trihydrate, at least one alkali soluble polymer for inhibition of sodium acetate anhydrous crystal formation in sodium acetatetrihydrate containing phase change materials, and at least one sodium acetate trihydrate nucleation promoter, and, if a lower phase change temperature is required, at least one melting point depressing agent."

http://www.freepatentsonline.com/20180237676.pdf

Patent application: Multi-mode cabin heating system with dual heating source

Ben Welter - Thursday, August 23, 2018

Mahle cabin heating system patent drawing

U.S. patent application 20180236843 (applicant MAHLE International GmbH, Stuttgart, Germany):

"A heating system for an automotive passenger cabin includes a blower fan generating an air flow; a first heater core downstream of the blower fan; a second heater core downstream of the first heater core; a coolant loop with a first branch and a second branch, wherein the first heater core is disposed in the first branch and the second heater core is disposed in the second branch; a change-over valve arrangement having a first setting establishing fluid communication between the first and second heater cores by connecting the first and second branches in two locations on opposite sides of the first and second heater cores. The change-over valve arrangement has a second setting separating the fluid communication between the first and second heater cores by disconnecting the first and second branches. The second branch or both the first and the second branch are connectable to a PCM heater."

http://www.freepatentsonline.com/20180236843.pdf

Patent application: Lithium-ion battery system having temperature control function

Ben Welter - Thursday, August 23, 2018

U.S. patent application 20180241028 (applicants Bordrin Motor Corp. Inc., Southfield, Mich.; Huai'an Junsheng New Energy Technology Co. Ltd., Huai'an City, China); and Nanjing Shenghe New Energy Technology Co. Ltd. (Nanjing City, China):

"A lithium ion battery system having a temperature control function includes a shell, a battery core, and a phase change material. The battery core is packaged in the shell, the shell is filled with the phase change material which is in contact with a surface of the battery core, and the phase change material includes sodium nitrate with crystal water, paraffin wax, white carbon black, polyacrylamide gel, and trimethylolpropane."

http://www.freepatentsonline.com/20180241028.pdf

Patent application: Vehicle seating assembly

Ben Welter - Sunday, August 19, 2018

Ford patent drawing

U.S. patent application 20180229632 (applicant Ford Global Technologies LLC,  Dearborn, Mich.):

"A vehicle seating assembly comprises a body with a center portion and four corner portions and a seating surface. A supporting layer is disposed below the body. A thermal transfer node is disposed in the body. The thermal transfer node includes a heat sink and a thermoelectric device. The heat sink is located between the seating surface and the thermoelectric device. The heat sink and the thermoelectric device are configured to draw heat away from the heating surface. A fluid moves proximate the thermal transfer node and into the supporting layer to draw heat away from the thermal transfer node. A phase change material is disposed between the seating surface and the heat sink."

http://www.freepatentsonline.com/20180229632.pdf

Patent application: Use of PCMs to delay icing or to cause de-icing in wind-driven generators

Ben Welter - Sunday, August 19, 2018

U.S. patent application 20180230972 (applicant Gamesa Innovation & Technology, S.L., Sarriguren, Spain):

"The invention relates to the use of phase change materials (PCMs) to delay icing or to cause de-icing in different wind-driven power generator elements. The invention also relates to the method for delaying icing or causing de-icing in different wind-driven power generator elements based on the use of phase change materials (PCMs), said method comprising: a) obtaining the PCMs, and b) incorporating the PCMs obtained into different wind-driven power generator elements."

http://www.freepatentsonline.com/20180230972.pdf

Patent application: Renewable energy heater

Ben Welter - Saturday, August 18, 2018

U.S. patent application 20180231332 (inventors Momoe Anno, Miri Yasuda, Nidhi Jaju, Mai Morita and Youkie Shiozawa, Tokyo, Japan):

"A portable heating device that includes a phase changing material mixture to absorb and release thermal energy and warm a space via convection heating. The phase changing material mixture includes sodium sulfate decahydrate, sodium chloride, and sodium polyacrylate. The phase changing material mixture is contained in portable aluminum capsules. A holder, also made of aluminum, can be used to carry one or more of the aluminum capsules."

http://www.freepatentsonline.com/20180231332.pdf

Patent application: Cooling electronic devices in a data center

Ben Welter - Saturday, August 18, 2018

U.S. patent application 20180235108 (applicant Google LLC, Mountain View, Calif.):

"A data center cooling system includes a thermosiphon, an actuator coupled to the thermosiphon, and a controller. The thermosiphon includes an evaporator; a condenser; and at least one conduit coupled between the evaporator and the condenser to transport a working fluid between the evaporator and the condenser. The controller is coupled to the actuator and configured to operate the actuator to adjust a liquid level of the working fluid in the evaporator based, at least in part, on a parameter associated with a heat load of one or more data center heat generating computing devices."

http://www.freepatentsonline.com/20180235108.pdf

Patent application: Cooling system for vehicle interior surfaces

Ben Welter - Sunday, August 12, 2018

U.S. patent application 20180222517 (applicant Toyota Motor Engineering & Manufacturing North America Inc., Erlanger, Ky.):

"A vehicle component includes a first volume of phase change material and a second volume of phase change material spaced apart from the first volume of phase change material. The first volume of phase change material contains a greater mass of phase change material than the second volume of phase change material. The component also includes a thermally-conductive structure in direct contact with both the first volume of phase change material and the second volume of phase change material, so as to facilitate heat transfer between the first volume of phase change material and the second volume of phase change material."

http://www.freepatentsonline.com/20180222517.pdf

Patent application: Thermal container insulated with phase change material

Ben Welter - Sunday, August 12, 2018

Solee patent drawingU.S. patent application 20180224178 (applicant Solee Science & Technology USA, Berkeley Heights, N.J.):

"A thermal container insulated with phase change material comprising a plurality of panels to form a body with a plurality of sides, a bottom and a lid, wherein each panel further comprises: a lining board, a phase change cold storage board, an insulation board; and a skin board. The phase change cold storage board further comprises an array of openings filled with solid-solid phase change material. The thermal container can maximize its storage capacity without compromising any volume for ice. It can maintain an accurate temperature range suitable for transportation. The container is reinforced at various locations to improve stability and structural integrity."

http://www.freepatentsonline.com/20180224178.pdf

Patent application: Evaporative cooling system and device

Ben Welter - Sunday, August 12, 2018

U.S. patent application 20180224212 (inventor George Michael Kaler Jr., Trophy Club, Texas):

"An evaporative cooling system includes an indirect cooling coil containing a cooling fluid to be circulated and a blower assembly configured to generate an inlet air stream through the indirect cooling coil. The cooling fluid in the indirect cooling coil is a slurry of water and phase change material."

http://www.freepatentsonline.com/20180224212.pdf