82results about How to "Reduce battery capacity" patented technology

An object of the invention is to provide a negative electrode for a nonaqueous electrolyte secondary battery having a small surface film resistance and a high negative electrode strength. The present invention relates to a negative electrode for a nonaqueous electrolyte secondary battery, wherein an active material layer containing an active material and a binder is formed on a collector, the active material being a material in which metal oxide fine particles having an average particle diameter of 250 nm or less are attached to the surface and the binder being a binder having an olefinic unsaturated bond.

Certain embodiments of the present invention provide a battery heating circuit, comprising a switch unit 1, a switching control module 100, a damping component R1, an energy storage circuit, and an energy superposition unit; the energy storage circuit is configured to connect with the battery to form a loop, and comprises a current storage component L1 and a charge storage component C1; the damping component R1, the switch unit 1, the current storage component L1, and the charge storage component C1 are connected in series; the switching control module 100 is connected with the switch unit 1, and is configured to control ON/OFF of the switch unit 1, so as to control the energy flowing between the battery and the energy storage circuit.

In a hand warmer, a heat dissipating plate is thermally coupled to a heater that is supplied with current by a battery that is accommodated in a case. The battery is a box-shaped rechargeable battery of a box-shaped rechargeable lithium-ion battery or lithium-polymer battery that has flat surfaces opposed to each other. The heater is a heating element that is opposed to the flat surface of the battery. A shielding plate is arranged between the heating element and the flat surface of the battery. The heat dissipating plate that is thermally coupled to the heating element is secured to the case on the surface side of the case. In the hand warmer, the flat surface of the box-shaped rechargeable battery, the shielding plate and the heat dissipating plate are arranged in a stack structure. The heat dissipating plate is heated by the heating element.

Certain embodiments of the present invention provide a battery heating circuit, comprising a switch unit (1), a switching control module (100), a damping component R1, an energy storage circuit, and an energy superposition unit, the energy storage circuit is configured to connect with the battery to form a loop, and comprises a current storage component L1 and a charge storage component C1; the damping component R1, the switch unit (1), the current storage component L1, and the charge storage component C1 are connected in series; the switching control module (100) is connected with the switch unit (1), and is configured to control ON/OFF of the switch unit (1), so as to control the energy flowing between the battery and the energy storage circuit; the energy superposition unit is connected with the energy storage circuit, and is configured to superpose the energy in the energy storage circuit with the energy in the battery when the switch unit (1) switches on and then switches off; the switching control module (100) is also configured to control the switch unit (1) to switch off after the first positive half cycle of current flow through the switch unit (1) after the switch unit (1) switches on, and the voltage applied to the switch unit (1) at the time the switch unit (1) switches off is lower than the voltage rating of the switch unit (1).

The invention provides a power assembly for an electric automobile. The power assembly comprises a driving motor (2) and a power transmission system (1), wherein the driving motor is a permanent magnet synchronous motor; the power transmission system (1) comprises a gear transmission system, an automatic gear-shifting system and an automatic parking system; the gear transmission system comprises a differential assembly (13), an input shaft (16), a shifting fork, a synchronizer (17), a first-gear gear and a second-gear gear (18); the automatic gear-shifting system comprises a gear-shifting motor (4), a shifting fork (5), a shifting fork shaft (7), a gear-shifting shaft (6), a gear-shifting cover plate (8), a gear-shifting shaft angle sensor (9), a gear-shifting position detection rod (10),a gear-shifting motor cover plate (11) and a shift sensor (12); and the automatic parking system comprises a P-gear motor (3), a P-gear pawl (15), a P-gear pawl pressure plate (19), a spring pre-fastening mechanism (20), a P-gear shaft (21), a P-gear cover plate (22), a P-gear position detection rod (23) and a P-gear position sensor (24).

A redox flow battery in which a positive electrode electrolyte stored in a positive electrode tank and a negative electrode electrolyte stored in a negative electrode tank are supplied to a battery element to charge and discharge the battery is provided, the positive electrode electrolyte in the redox flow battery containing a Mn ion as a positive electrode active material, the negative electrode electrolyte containing at least one of a Ti ion, a V ion, and a Cr ion as a negative electrode active material, in which the redox flow battery includes a negative-electrode-side introduction duct in communication with inside of the negative electrode tank from outside thereof, for introducing oxidizing gas into the negative electrode tank, and a supply mechanism for supplying the oxidizing gas into the negative electrode tank via the negative-electrode-side introduction duct.

A hydrogen absorbing alloy represented by the formula Ln1-xMgxNiy-aAla (where Ln is at least one element selected from rare earth elements, 0.05<=x<0.20, 2.8<=y<=3.9 and 0.10<=a<=0.25) which is used for an alkaline storage battery.

A charge/discharge method for a lithium secondary battery is performed on a lithium secondary battery including a positive electrode containing a positive electrode active material capable of occluding/releasing lithium ions; a negative electrode containing a negative electrode active material capable of occluding/releasing lithium ions; a separator located between the positive electrode and the negative electrode; and an electrolyte having a lithium ion conductivity. The positive electrode active material contains a lithium-containing transition metal oxide; and a reversible capacity of the negative electrode is larger than a usable capacity of the positive electrode. First charge/discharge is performed by which the positive electrode in a charged state is discharged until having a first potential VDp1, which is lower than 2.7 V on a lithium metal basis, and the discharge is finished at this point.

A method for grouping lithium secondary battery packs comprises the following steps: charging and discharging a battery for 1-3 cycles, recording the last discharge capacity C₀, setting a capacity lower limit, and determining the battery with the C₀ thereof not less than the capacity lower limit to be an eligible battery; discharging the battery to a discharge cut-off voltage V_d so the battery is discharged to a power empty state; charging the empty battery to a capacity C₁; storing the battery for time t₁ in an environment with a temperature ranging between 20-50° C., recording the battery voltage V₁, storing the battery again for time t₂ in the environment with the temperature ranging between 20-50° C., recording the battery voltage V₂, calculating a voltage difference ΔV=V₂−V₁ and setting the range of ΔV; and grouping eligible batteries in a previous step according to a certain capacity grouping standard.

A battery connection device is provided with an authentication data creating unit that creates authentication data, a conversion unit that performs a first conversion of the authentication data, a transmission unit that transmits the authentication data to a battery pack, a receiving unit that receives from the battery pack a battery-side conversion result that is data obtained after the authentication data is converted by the battery pack, a reverse conversion unit that, on an assumption that the battery pack creates the battery-side conversion result by performing the first conversion and a second conversion on the authentication data, performs a reverse conversion of the second conversion on the battery-side conversion result, and a determination unit that determines whether or not the battery pack is an authentic product by comparing a result of the reverse conversion with a result of the first conversion.

A metal-resin composite having high gas sealing properties is provided. An aluminum alloy structure having a shape surrounding the copper 63 is firstly formed, and the attached aluminum alloy is made closely contact with the copper electrode 63 and further made engaged into the copper electrode 63 by pressing or forging. It is then machined into a predetermined shape so as to prepare the copper alloy 63 attached with an aluminum alloy part 61a. Subsequently, the surface treatment of the NMT or NMT 2 is given to three members of an aluminum electrode 62, the copper electrode 63 attached with the aluminum alloy part 61a and an aluminum alloy lid 61. These three members are inserted into an injection mold, and a thermoplastic resin composition 64 of PPS resin is injected. The lithium-ion battery lid 60 having a structure as shown in FIG. 11 is thus obtained.

The invention discloses a battery system. The battery system comprises multiple power supply loops which are arranged in parallel, each power supply loop is provided with multiple battery packs which are connected in series, and each power supply loop is set to be capable of supplying power or cutting off power supply to electric equipment under the control of a control unit. The invention further provides an electric automobile with the battery system, especially, a power lithium battery system or other rechargeable secondary battery systems. The battery system can also be applied to various energy storage systems. By means of the battery system and the electric automobile with the same, the problems of the battery system in the aspects such as reliability, safety, cooling and heating properties and battery protection are effectively solved.

The present invention provides an electrode mixture, an electrode and a nonaqueous electrolyte secondary battery. The electrode mixture includes a lithium mixed metal oxide represented by formula (1):

Li_z(Ni_1-x-yMn_xM_y)O₂  (1),

an electrically conductive material, and a water-dispersible polymeric binder, wherein x is 0.30 or more and less than 1, y is 0 or more and less than 1, x+y is 0.30 or more and less than 1, z is 0.5 or more and 1.5 or less, and M represents one or more members selected from the group consisting of Co, Al, Ti, Mg and Fe.

The object of the present invention is to provide a carbonaceous material for an anode of a nonaqueous electrolyte secondary battery which uses a plant-derived organic material as a raw material, has high purity so that alkali metals such as the potassium element and alkali earth metals such as the calcium element are sufficiently removed by de-mineral treatment, and has excellent discharge capacity and efficiency, a novel manufacturing method capable of efficiently mass-producing the carbonaceous material, and a lithium ion secondary battery using the carbonaceous material.

The problem described above can be solved by a carbonaceous material for an anode of a nonaqueous electrolyte secondary battery obtained by carbonizing a plant-derived organic material, the atom ratio (H/C) of hydrogen atoms and carbon atoms according to elemental analysis being at most 0.1, the average particle size Dv₅₀ being from 2 to 50 μm, the average interlayer spacing of the 002 planes determined by powder X-ray diffraction being from 0.365 nm to 0.400 nm, the potassium element content being at most 0.5 mass %, and the calcium element content being at most 0.02 mass %.

The invention relates to an automotive range extender based on a linear ISG(Integrated Starter and Generator) motor/engine. The range extender comprises cylinders, wherein two piston components are arranged and are respectively located in the two cylinders; the two piston components are connected with the two ends of a connecting rod component; a linear displacement sensor and a Hall sensor are arranged on the connecting rod component; a linear ISG motor rotor is arranged in the middle of the connecting rod component; a linear ISG motor stator is fixed between the two cylinders and outside the linear ISG motor rotor; a scavenging air receiver is arranged on the inner sides of the cylinders; a throttle body is connected with the scavenging air receiver; an oil sprayer, a throttle body position sensor and an air flow sensor are arranged on the throttle body in turn; cylinder covers are arranged on the outer sides of the cylinders; spark plugs are arranged on the cylinder covers; and an electric control unit is respectively in electric connection with the linear displacement sensor, the Hall sensor, the throttle body position sensor and the air flow sensor. Compared with the prior art, the automotive range extender based on the linear ISG motor/engine has the advantages at the aspects of energy use efficiency, cost, mechanical structure, use convenience, and the like.

A solar power generation system includes a storage battery, a solar power generation device that is provided on the side of the storage battery and outputs solar generated power, and a power control device. The power control device includes a variation component extraction unit that extracts a shade variation component from a generated power signal measured by the solar power generation device, a smoothing unit that smoothens the shade variation component obtained by the variation component extraction unit, a system output correction unit that obtains a system output power target value which is a combined output between a discharge output of the storage battery and the solar generated power on the basis of an output signal from the smoothing unit, and a charge/discharge output correction unit that corrects a charge/discharge target value which is a difference between the system output power target value and the generated power signal on the basis of a current time and a state of charge of the storage battery.

A non-aqueous electrolyte secondary battery is provided that remarkably improves battery reliability by quickly lowering the potential of the positive electrode while preventing separator shrinkage at high temperatures. A separator has on its surface a shrinkage-prevention-layer formed portion (3a), in which a layer for preventing separator shrinkage is formed, and a shrinkage-prevention-layer unformed portion (3b), in which the layer for preventing separator shrinkage is not formed. A positive electrode current collector and a negative electrode current collector respectively have a positive electrode current collector exposed portion (1b) and a negative electrode current collector exposed portion (2b). The shrinkage-prevention-layer unformed portion (3b) of the separator is disposed at a region where the current collector exposed portions (1b, 2b) face each other.

A system for navigation of an autonomously navigating submersible body during entry into a docking station below the water surface includes a determiner for determining an actual motion vector of the autonomously navigation submersible body in relation to the set motion vector describing the optimum entry direction into the docking station and a calculating unit. The calculating unit serves to determine the deviation between the actual motion vector and the set motion vector to determine control vectors based on the deviation and to thereby control the autonomously navigating submersible body during entry.

The invention relates to a composite separator and a preparation method thereof. The lithium battery composite separator is formed by compounding a polyolefin microporous membrane and one or two high-temperature-resistant non-woven fabric layers, wherein the thickness of the composite separator is 6-40[mu]m, the surface density is 5-35g/m<2>, the porosity is 35-50%, the liquid absorption rate is greater than 150%, the thermal shrinkage rate at 130 DEG C is less than 0.5%, and the ionic conductivity is (1.0-5.0)*10<-3>S/cm. The composite separator disclosed by the invention has the advantages that the is fast; the lithium battery composite diaphragm has the characteristics of fast electrolyte infiltration, high liquid absorption rate, low thermal shrinkage rate, good mechanical property andthe like, the compatibility of the separator and an electrolyte is improved, the safety and the service life of a lithium battery are improved, and the prepared composite separator also adapts to thetechnological requirements of mechanical assembly of a battery production line and has a relatively wide application field.

A nonaqueous-electrolyte battery which is capable of preventing introduction of water and deterioration in the capacity thereof is disclosed. The nonaqueous-electrolyte battery according to the present invention incorporates a case constituted by laminated films; and a unit cell which is accommodated in the case and having a structure that the peripheries of the case is sealed with heat, wherein when an assumption is made that the quantity of water capable of penetrating a heat-weld resin layer which is the innermost layer of the case having a thickness of T (μm) is R (g/m²·day), the cross sectional area of resin in a heat-sealed portion is S (cm²), an average width of the heat-sealed portion is W (cm) and the capacity of the unit cell is C (Wh), the following relationship is satisfied: (T×R×S)/(W×C)≦0.96 μg/Wh·day. When the foregoing structure is employed, water introducing rate can be reduced to 350 μg/year or lower per capacity (Wh).

Disclosed are articles, lubrication systems, and methods that sequester lubricant viscosity modifiers via adsorption of the viscosity modifier molecules onto a molecular sieve material at lubricant temperatures below a threshold temperature and release of the viscosity modifier molecules from the molecular sieve material at lubricant temperatures at about the threshold temperature so that the viscosity modifier molecules are in the lubricant at temperatures from about the threshold temperature and higher. In this way, the viscosity modifier molecules are removed from the lubricant at temperatures where the lubricant has sufficient viscosity but released into the lubricant when they can useful increase the lubricant viscosity because it otherwise would be too low.

A charge circuit having multi charge stages for charging at least one battery includes: a first current generating circuit for generating a first charge power having a first charge current in pulse form with a first frequency and a first charge voltage to charge the at least one battery; a voltage generating circuit connected to the first current generating circuit for controlling the first charge power having a first charge current in pulse form with a first frequency and a first charge voltage; a voltage control circuit connected to the voltage generating circuit for generating a first constant voltage and/or a second constant voltage; and a second current generating circuit connected to the voltage generating circuit for generating a variant power comprising a variant current in pulse form with a second frequency wherein a charge voltage included in the variant power varies with the second frequency.

The invention discloses a display device and a screen power dissipation control method thereof. The method comprises the steps that when a current frame is displayed on a display panel, a current monitoring module supplies display current to the display panel, the current monitoring module is arranged at a positive voltage input interface or a negative voltage input interface of the display paneland feeds back display current to a power selection module; the power selection module obtains the display current fed back by the current monitoring module, and when it is determined that a drive circuit can supply the display current, a power supply source of the display panel is switched from an independent power source into a drive circuit. When the display panel is in the low power dissipation mode, when it is determined that the drive circuit meets the power supply requirement of the display panel, the power supply selection module enables the drive circuit to supply power to the displaypanel, and compared with the prior art that an independent power source is adopted for supplying power to the display panel, the total power dissipation of a screen of the display panel can be lowered under the same outside condition.

A system for managing charging of each of a plurality of automated guided vehicles that travels on an orbiting route in an unmanned manner using a battery mounted thereon as a driving source, in which the battery is charged at a charging station installed at a predetermined position on the orbiting route, includes: an after-charging voltage recording unit for recording a voltage after charging at the charging station for each of the automated guided vehicles; a charge priority setting unit for setting up charge priority of each of the automated guided vehicles on the basis of voltage values of voltages after charging recorded in the after-charging voltage recording unit; and a charging target value setting unit for setting up a charging target value of each of the automated guided vehicles on the basis of the charge priorities set up by the charge priority setting unit.

The invention provides a cooperative control system and a cooperative control method of IT devices and storage batteries. The characteristics (time, frequency, and spacing) of coming shutdown is judged in advance, the presumed shutdown can be controlled through the cooperation of the IT devices and an uninterrupted power device having the storage batteries, thereby realizing the high efficiency of the charging and discharging of the storage batteries. The cooperative control system includes a commercial power supply (10), a voltage recorder (20) for measuring the voltage of the commercial power supply, an uninterrupted power device (30) connecting with a plurality of storage batteries (32), a power supply connector (40) equipped with a power determining mechanism, and a plurality of IT devices (50) including servers (51) connecting with the power supply connector. Controlling parts (55) inside the servers predict the continuous time of the future shutdown, the power limit value of the IT devices is figured out based on the remain of the storage batteries and the predicted shutdown time, and the power of the IT devices is controlled to satisfy the power limit value.

The present invention provides a non-aqueous electrolyte secondary battery that can suppress a drop in a flash point of an electrolyte solution even if the non-aqueous electrolyte secondary battery is used for a long time. The non-aqueous electrolyte secondary battery includes: an electrode body having a structure in which a positive electrode including a positive-electrode active material and a negative electrode including a negative-electrode active material are stacked with a separator interposed therebetween; a non-aqueous electrolyte solution containing a flame retardant; and an outer casing accommodating the electrode body and the non-aqueous electrolyte solution. The non-aqueous electrolyte solution in the electrode body has a flame retardant concentration lower than a flame retardant concentration in the non-aqueous electrolyte solution between the electrode body and the outer casing.