Abstract: The present invention provides a liquid injection apparatus for injecting liquid into a container, comprising an injection chamber, a container for a liquid to be injected and entirely sealed except an injection port is placed in the injection chamber with the injection port directed to the bottom, an injection cell comprising at least one unit injection cell to accommodate the liquid to be injected is installed in the injection chamber, there is provided pressure regulating means to reduce the pressure in the injection chamber and to regulate pressure in the injection chamber to the atmospheric pressure or to a level higher than the atmospheric pressure, the pressure in the injection chamber is reduced to a level lower than the atmospheric pressure by the pressure regulating means at least once, and then, by maintaining the atmospheric pressure or the pressure higher than the atmospheric pressure, the liquid is injected through the injection port.

Abstract: The present invention provides a lamination type secondary battery, in which accurate positioning can be performed for positive electrodes and negative electrodes arranged face-to-face to each other. The invention provides a lamination type secondary battery, which comprises positive electrodes and negative electrodes having different surface areas, said positive electrodes and said negative electrodes being laminated on each other with a separator between them, each of the electrodes having smaller surface area is arranged at the center with equal spacing from outer periphery of a separator main body and is covered with the separator main body, and outer periphery of each of the electrodes having larger surface area is equal in size with outer periphery of the separator main body to cover the electrode having smaller surface area.

Abstract: A battery pack arranged to make a judgment concerning a loss of functional status and to perform selectively charge-and-discharge control and forced discharge control according to the judgment. The battery pack includes a charge-and-discharge control device for charging and discharging a battery, a forced discharge control device for forcedly discharging each cell, a function detecting device for detecting a functional status of the battery pack, a judging device for making a judgment concerning a loss of functional status detected by the function detecting device, and a control device for selectively controlling the charge-and-discharge control device and the forced discharge control device according to the judgment concerning a loss of functional status made by the judging device.

Abstract: A battery pack containing a CPU and allowing correction of measured data is provided. The CPU has, at least, a main program for obtaining data concerning the voltage of each cell, charge/discharge current and temperature by measurement to control charging and discharging and to perform cumulative calculation of the remaining battery capacity, a communication program for communicating with an external device, and a correction program for acquiring measured data to obtain a correction factor for calculating a predetermined value from each item of the measured data and for storing the correction factor in a memory. After the state of each cell has been set to a predetermined value, the correction program is started to obtain a correction factor and to store it in the memory.

Abstract: An electrolyte injection apparatus for injecting an electrolyte into a battery case tightly closed except an electrolyte injection hole, said apparatus comprising an electrolyte injection nozzle airtightly mounted on the electrolyte injection hole, exhaust means for exhausting the space inside the battery case with the electrolyte injection nozzle mounted on the electrolyte injection hole, an electrolyte pot connected to the electrolyte injection nozzle via an electrolyte injection valve and for storing the electrolyte to be injected into the battery case, and electrolyte feeding means for feeding a given amount of the electrolyte into the electrolyte pot via an electrolyte feeding valve, and pressurized gas feeding means for injecting the electrolyte in the electrolyte pot under pressure into the battery case.

Abstract: An electrolyte injection apparatus for injecting an electrolyte into a battery case tightly closed except an electrolyte injection hole, said apparatus comprising an electrolyte injection nozzle airtightly mounted on the electrolyte injection hole, exhaust means for exhausting the space inside the battery case with the electrolyte injection nozzle mounted on the electrolyte injection hole, an electrolyte pot connected to the electrolyte injection nozzle via an electrolyte injection valve and for storing the electrolyte to be injected into the battery case, and electrolyte feeding means for feeding a given amount of the electrolyte into the electrolyte pot via an electrolyte feeding valve, and pressurized gas feeding means for injecting the electrolyte in the electrolyte pot under pressure into the battery case, whereby the pressurized gas feeding means is connected to the electrolyte pot via a pressure valve, and the electrolyte is injected by pressurizing the electrolyte after exhausting internal space of th

Abstract: The present invention provides a nonaqueous electrolyte secondary battery, comprising a battery element produced by laminating and winding up a positive electrode and a negative electrode with a separator interposed therebetween. A separator is not provided on the outermost periphery of the battery element. A current collector surface of one of the positive electrode or the negative electrode is exposed to the ambient environment. A separation-preventive tape is attached on the battery element except a portion of one of the longer sides on the outermost periphery. This battery increases battery capacity of the thin-walled type nonaqueous electrolyte secondary battery.

Abstract: An electrolyte injection method for injecting an electrolyte into a battery case tightly closed except an electrolyte injection hole, said method comprising an electrolyte injection nozzle airtightly mounted on the electrolyte injection hole, exhausting the space inside the battery case with the electrolyte injection nozzle mounted on the electrolyte injection hole, an electrolyte pot connected to the electrolyte injection nozzle via an electrolyte injection valve and for storing the electrolyte to be injected into the battery case, and feeding a given amount of the electrolyte into the electrolyte pot via an electrolyte feeding valve, and injecting the electrolyte in the electrolyte pot under pressure into the battery case, whereby the pressurized gas feeding means is connected to the electrolyte pot via a pressure valve, and the electrolyte is injected by pressurizing the electrolyte after exhausting internal space of the battery case.

Abstract: The present invention provides a lamination type secondary battery, in which accurate positioning can be performed for positive electrodes and negative electrodes arranged face-to-face to each other. The invention provides a lamination type secondary battery, which comprises positive electrodes and negative electrodes having different surface areas, said positive electrodes and said negative electrodes being laminated on each other with a separator between them, each of the electrodes having smaller surface area is arranged at the center with equal spacing from outer periphery of a separator main body and is covered with the separator main body, and outer periphery of each of the electrodes having larger surface area is equal in size with outer periphery of the separator main body to cover the electrode having smaller surface area.

Abstract: A battery pack, using a battery having one or more cells as a power source and for connecting power to an external host device, and including charging/discharging apparatus connected in series with the battery and for performing charging and discharging, current detecting apparatus for detecting charging and discharging current, voltage detecting apparatus for detecting voltage, temperature detecting means for detecting temperature, and a controller, whereby the controller is operated in such manner that it turns the state from at least one of charging state, discharging state, charging stop state, and discharging stop state to another state by controlling the charging/discharging apparatus based on the charging/discharging current, the voltage and the temperature as detected, and the state information is transmitted to the external host device when there is a request or at regular interval or when there is state transition, and state transition such as a charging/discharging state or a stop state of the batt

Abstract: The present invention provides a conductive connecting structure exhibiting satisfactory connecting performance to connect a conductive connecting tab being mounted on a battery element to a battery case, said conductive connecting table of the battery is connected to inner wall surface of the battery case or to inner surface of the battery housing, said conductive connecting tab with a plurality of bumps for projection welding is positioned face-to-face to inner wall surface of the battery case or to inner surface of the battery housing, and projection welding is performed to connect the tab.

Abstract: The present invention provides a sealed battery, which comprises a battery element sealed by a flexible external material, said battery element being produced by winding up a positive electrode and a negative electrode each in band-like shape with a separator therebetween, said battery element comprises a wound-up element having plane portions and curved portions, and an active material layer is formed at least on one of the surfaces of the curved portions positioned on outermost periphery of each of the positive electrode and the negative electrode.

Abstract: A battery pack containing a CPU and allowing correction of measured data is provided. The CPU has, at least, a main program for obtaining data concerning the voltage of each cell, charge/discharge current and temperature by measurement to control charging and discharging and to perform cumulative calculation of the remaining battery capacity, a communication program for communicating with an external device, and a correction program for acquiring measured data to obtain a correction factor for calculating a predetermined value from each item of the measured data and for storing the correction factor in a memory. After the state of each cell has been set to a predetermined value, the correction program is started to obtain a correction factor and to store it in the memory.

Abstract: The present invention provides a battery, which maintains stable conductive connection between an electrode guiding pin and an electrode pulling member. The invention provides a sealed battery, which comprises an insulating member with a through-hole, said insulating member is placed on an opening of a planar member, an electrode guiding pin connected in conductive manner to a power generating element is passed through said through-hole and caulked and fixed, whereby an electrode pulling member is placed on the insulating member, and the electrode pulling member is connected in conductive manner with the electrode guiding pin by welding.

Abstract: The present invention provides a sealed battery using an external material made of flexible material, in which there is no need to bend electrode conductive tabs and in which no defective winding occurs around tabs of the battery element. A band-like positive electrode and a band-like negative electrode are laminated one upon another via a separator, and a laminated combination of electrodes is wound up to prepare a battery element, and the battery element is sealed with a flexible external material. Electrode conductive tabs are bonded respectively at outermost periphery of the positive electrode and the negative electrode when the electrodes are wound up, and neither of the electrode conductive tabs is present at central portion of the battery element.

Abstract: The present invention provides a mutual connection judging circuit for judging mutual connection between a device 3 with an incorporated battery 4 and a charger 1, wherein there are provided transistors Q1 and Q2 on the charger 1 side and the device 3 side respectively, bases of the transistors Q1 and Q2 on the charger 1 side and the device 3 side are connected with each other, and mutual connection is judged by collector potential of the transistors Q1 and Q2. The charger 1 controls the charging by judging mutual connection depending upon whether the collector of the PNP transistor Q1 is in opened state or not. The device 3 comprises a circuit Q3 for controlling emitter potential of the NPN transistor Q2, controls emitter potential depending upon whether the charging is in enable state or not, and turns on or off the NPN transistor Q2, and the charger 1 starts the charging by judging collector potential of the PNP transistor Q1.

Abstract: The present invention provides a battery pack, using a battery 1 comprising one or more cells as a power source and for connecting power to an external host device, and it comprises charging/discharging means 2-4 connected in series to the battery 1 and for performing charging and discharging, current detecting means 6 and 7 for detecting charging and discharging current, voltage detecting means 5 for detecting voltage, temperature detecting means for detecting temperature, and control means 9, whereby the control means is operated in such manner that it turns the state from at least one of charging state, discharging state, charging stop state, and discharging stop state to another state by controlling the charging/discharging means 2-4 based on the charging/discharging current, the voltage and the temperature as detected, and said state information is transmitted to the external host device when there is a request or at regular interval or when there is state transition, and state transition such as a charg