摘要:
A battery pack suppresses temperature rise of secondary battery during charging and discharging. The battery pack includes a plurality of batteries stacked up, a case enclosing the plurality of batteries, a heat collector disposed near the battery positioned in the center of the plurality of batteries, a heat radiator placed at one side of the case, and a first heat transfer unit placed for connecting the heat collector and heat radiator. Further, the battery pack includes a heat transfer plate placed at the other side of the case, and a second heat transfer unit placed between the heat collector and heat transfer plate.
摘要:
The object of the present invention is to obtain an electrode whose resistivity increases with temperature, and a battery using the same. Specifically, the invention consists in limiting the proportion of a conductive filler contained in electron conductive particles of an electron conductive particle layer to a range of from 55 to 70 parts by weight. A battery constituted by using the electrode has an increased discharge capacity and is capable of reducing a short-circuit current.
摘要:
A battery with an active material layer 6 having an active material 8, an electronically conductive material 9 contacted to the active material 8, and an electrolytic layer 3 jointed with the active material layer 6, wherein the electronically conductive material 9 comprises an electrically conductive filler and a resin having a predetermined thermal melting temperature T1, and has a Positive Temperature Coefficient (PTC) such that resistance of the electrically conductive material increases with temperature, and wherein the active material layer 6 and the electrolytic layer 3 are laminated and are jointed together by heating the resin to a predetermined thermal treatment temperature T2.
摘要:
A lithium secondary battery has an electrode assembly including a positive electrode plate having a positive electrode current collector and a positive electrode sheet fixed to at least one surface of the positive electrode current collector and having a positive electrode active material as a main component, a negative electrode plate having a negative electrode current collector and a negative electrode sheet fixed to at least one surface of the negative electrode current collector and having a negative electrode active material as a main component, and a separator interposed between the positive electrode plate and the negative electrode plate. A current controller for cutting off current at a minimum temperature is present on each of the positive and negative electrode plates.
摘要:
A Li-ion battery cell comprising a polymeric matrix positive electrode layer member, a polymeric matrix negative electrode layer member, and an interposed microporous polyolefin separator layer member is laminated into a unitary, flexible cell structure by means of heat and pressure without necessity of applied interlayer adhesive. A volatile vehicle solution of a primary plasticizer for the electrode member polymer matrix is applied to the microporous separator member where it is absorbed into the porous structure. Evaporation of the volatile vehicle solvent deposits the plasticizer upon and within the pores of the separator member. During the lamination operation the plasticizer is forced into contact with the electrode member polymer where it softens the polymer into a thermoplastic adhesive in the region of the electrode/separator interface, thereby enabling the electrode polymer alone to form a strong bond to the separator upon cooling.
摘要:
The performance of alkaline cells comprising a zinc anode and manganese dioxide cathode can be improved, especially in high power application, by applying thermal insulating material to the cell casing. The thermal insulation material can be conveniently applied between the cell label and casing. The thermal insulating material significantly reduces the overall heat transfer coefficient, Uo, for the cell. The insulation increases the internal temperature of the cell during discharge, resulting in better performance.
摘要:
A non-aqueous electrolyte rechargeable battery is provided with a switch element in a circuit for connecting the battery to an external power source, the switch element being operable in response to a change in temperature of the battery, thereby disconnecting the battery from the circuit and establishing a short circuit across the positive electrode and the negative electrode, the switch element being capable of restoring to its initial state in response to a change in temperature of the battery.
摘要:
A battery for use in various temperature environments includes a plurality of cells arranged in a close packing arrangement and a sleeve that is disposed around the cells. The sleeve is constructed from a material that acts as an insulator at relatively low temperatures and that acts as a conductor at relatively high temperatures.
摘要:
A lithium secondary cell includes an inner electrode body impregnated with a non-aqueous electrolyte. The inner electrode body includes a positive electrode and a negative electrode wound or laminated together with a separator inserted therebetween. A cell case contains the inner electrode body and includes an electrode cover sealing the inner electrode body and is provided with cell covers, external terminals and internal terminals. The lithium secondary cell is provided with a unit for cooling the electric current path. The lithium secondary cell is capable of preventing a lowering of performance and extending the service life by preventing heating of the lithium secondary cell and maintaining the cell temperature within an adequate range.
摘要:
Disclosed is a battery pack, comprising a secondary battery unit including at least one secondary battery, the at least one secondary battery comprising an electrode group and an insulating case having the electrode group housed therein, and the battery pack further comprising a heat conductive sheet which is provided at at least a part of the surface of the secondary battery unit and has a heat conductivity higher than a heat conductivity of the case.