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210 results about "Nickel cadmium" patented technology

Nickel cadmium. (NiCd) A rechargeable battery technology that is widely used for portable hand tools. It uses a nickel and cadmium plate and potassium hydroxide as the electrolyte. Originally invented in Sweden in 1899, it became popular in the 1950s after a sealed version was developed.

Amperage control for protection of battery over current in power tools

Amperage control of a power tool motor is provided by pulse width modulation of current from a power supply. The pulse width modulation may be varied according to the determined motor current and measured power supply voltage. The power supply preferably includes a battery, such a lithium ion or nickel cadmium.
Owner:BLACK & DECKER INC

Closed nickel-hydrogen storage battery and its production method

One problem with a sealed type nickel-metal hydride battery is that the high-rate discharge capability is inferior to that of a nickel-cadmium storage battery, because of a slow transfer rate of charges to the surface of a hydrogen storing alloy that is a negative electrode. Another problem is that the use of an alloy having excellent life characteristics takes much time for initial activation of battery characteristics. The invention provides a solution to the aforesaid problems by the provision of a sealed type nickel-metal hydride battery (1) improved in high-rate discharge capability and charge-discharge cycle characteristics. To this end, the invention is characterized by locating a 50 nm to 400 nm thick nickel-rich layer (11) on the surface of a hydrogen storing alloy powder, and locating the nickel-rich layer (11) as well on the surface of cracks (12) that open at the surface of alloy, and more preferably setting the mass saturation magnetization of the alloy powder at 2.5 to 9 emu / g and the content of magnetic nickel at 0.5 to 1.9 mmol per gram of the hydrogen storing alloy powder. A succession of hydrogen absorption step, alkali treatment step, product removal step, hydrogen desorption step and partial oxidization step by air are applied to the hydrogen storing alloy powder to obtain alloy powder, which is then used to obtain a battery having the aforesaid features. The invention is effectively applied to corrosion-resistant hydrogen storing alloys containing Er, Y and Yb.
Owner:GS YUASA INT LTD

Solar powered lamp

An improved solar powered LED-based lighting fixture providing substantial increases in the apparent light output compared to prior art solar powered LED-based lighting fixtures. This improvement in preferred embodiments results from the addition of inexpensive spherical lenses that create a large number of images of LED light sources, each image having substantially reduced brightness as compared to the real LED light source. These images with substantially reduced brightness result in beautiful patterns, that still appear very bright to a night time observer, because the LED source itself is in fact too bright to look at directly. In a preferred embodiment ten plastic 0.5-inch spherical lenses are positioned along the bottom edge of the cone at the bottom of lamp. Each of these spherical lenses creates multiple images of the single source LED, all nearly as bright as the source itself. As a result the perceived delivery of light intensity to an observer is multiplied by a factor of approximately 10 times. In other preferred embodiments, conventional primary cell alkaline batteries are used in place of rechargeable Nickel-Cadmium batteries, whereby the battery cost is cut in half and the energy storage capacity tripled. Applicant has discovered that the conventional primary cell alkaline batteries are safely and effectively recharged by the solar cell.
Owner:MORTON RICHARD G +1

Intelligent charging pile for electric vehicle storage battery

The invention discloses an intelligent charging pile of an electric vehicle storage battery, which belongs to the field of an intelligent charging and discharging device of a storage battery. The intelligent charging pile comprises a PLC (programmable logic controller) industrial control system inside a shell, wherein the electric vehicle storage battery is arranged outside the shell. The intelligent charging pile is characterized in that a wiring terminal, an intelligent rectifying and inverting module and the electric vehicle storage battery are orderly connected with one another through a lead; the control end of the intelligent rectifying and inverting module is connected with the PLC industrial control system; an alternating current contactor contact is arranged on an inlet lead; a charging inverting control switch is arranged on the lead between the intelligent rectifying and inverting module and the storage battery; the control ends of an alternating current contactor and the charging inverting control switch are connected to the PLC industrial control system; a touch screen is arranged at the data end of the PLC industrial control system; and a wiring terminal, the touch screen and a storage battery interface are arranged on the shell. The intelligent charging pile is suitable for various storage batteries, for example, a lead-acid storage battery, a maintenance-free storage battery, a nickel-cadmium accumulator and a lithium iron phosphate battery, can protect the electric vehicle storage battery, can be used for charging quickly and fully, and is high in safety performance, long in service life and simple to operate.
Owner:淄博京科电气研究所

Nickel-hydrogen and nickel-cadmium cell series type automatic changing speed charger

An automatic variable speed charger of nickel- cadmium and nickel-hydrogen cell series type consists of shell for containing charging component, charging groove for laying cells to be charged, converter for converting AC to be DC to provide DC power for charging and providing reference voltage to charging control unit, time control unit for controlling on-off state of each independent switch, cell number and voltage detection unit for detecting cell voltage and cell number, voltage and current regulation unit for controlling charge voltage and charge current as well as charge time.
Owner:杨福义
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