Hong Kong Applied Science and Technology Research Institute Company, Limited

Pau Yee Lim

Laiyong Xie

Jing Xiang

Yingkai Jiang

Man On Fu

Tak Cheung Yau

Systems and methods in which a thermal conductive composite comprises a non-uniform heat absorption profile of a thermal reactive material are described. Thermal conductive composites herein may be utilized in thermal regulatory modules with a gradient structure configured to transfer heat energy away from an area near a heat source to an area with a relatively large latent heat absorbing capacity. Thermal conductive material may be provided in a frame structure having lower porosity in a first region more near a heat source and higher porosity in a second region more distant from the heat source. A thermal reactive material may be deposited so as to be disposed within the pores of the thermal conductive material frame structure wherein the density of the thermal reactive material in the first region of the thermal conductive composite is lower than that at the second region of the thermal conductive composite.

Thermal regulatory modules useful for cooling energy packs

The invention provides a coating or film adapted to be arranged between a separator and at least one electrode of a rechargeable battery. The coating or film comprises a porous layer comprising a layer material having at least a first material and a second material, the first and the second materials being arranged to comprise a plurality of pores for passage of ions therethrough; and the second material is adapted to reduce in size upon drying such that porosity of the porous layer is improved or enhanced at a normal operating temperature; wherein, in response to temperature change, the layer material is adapted to undergo a first phase change during which the pores of said porous layer are adapted to substantially close to thereby substantially reduce or prevent further passage of ions.

Separator for a rechargeable battery

The invention provides a coating or film adapted to be arranged between a separator and at least one electrode of a rechargeable battery. The coating or film comprises a first material capable of forming a porous layer and allowing a passage of ions therethrough; wherein, in response to temperature change, the first material porous layer is adapted to substantially close pores in said first material porous layer to thereby substantially reduce or prevent further passage of ions through the first material.

A composite material for a lithium ion battery anode and a method of producing the same is disclosed, wherein the composite material comprises a porous electrode composite material. Pores with carbon-based material forming at the pore wall are created in situ. The porous electrode composite material provide space to accommodate volumetric changes during battery charging and discharging while the carbon-based material improved the conductivity of the electrode composite material. The method creates pores to have a denser carbon content inside the pores and a wider mouth of the pores to enhance lithium ion distribution.

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Hong Kong, China

Pau Yee Lim