摘要:
A battery module system includes a battery module and a control member. The battery module comprises battery units are connected in series. Each of the battery units comprises a unit cell having a voltage variation rate A (mV/% SOC) at a full charge voltage VH1 (V) is larger than 20 (mV/% SOC), which is a value obtained when the unit cell is charged at a current of 1 C at 25° C. The control member controls current to a current I1 until a maximum value Vmax (V) among the voltage of each unit cell reaches the full charge voltage VH1 (V) and then controls a voltage of the battery module to a voltage V2 (V) given by the following equation (1): V2=VH2×n (1).
摘要:
A nonaqueous electrolyte secondary battery includes: an outer housing; a nonaqueous electrolyte filled in the outer housing, a positive electrode housed in the outer housing, a negative electrode housed in the outer housing and a separator disposed between the negative electrode and the positive electrode. The nonaqueous electrolyte comprises a nonaqueous solvent including diethyl carbonate and at least one of ethylene carbonate and propylene carbonate, and the nonaqueous electrolyte has a content of the diethyl carbonate of from 80 to 95% by volume. The positive electrode comprises a positive electrode active substance having a positive electrode potential in a full charged state of 4.4 V or higher with respect to a potential of metallic lithium. The negative electrode comprises a negative electrode active substance having a negative electrode potential in a full charged state of 1.0 V or higher with respect to a potential of metallic lithium.
摘要:
A nonaqueous electrolyte battery includes a flattened electrode group, a case, a positive electrode terminal and a negative electrode terminal. The positive electrode terminal is bent around one edge portion of the positive electrode terminal, curved toward the electrode group and reaches a sealed portion. The other edge portion of the positive electrode terminal extends from the case through the sealed portion. The negative electrode terminal is bent around one edge portion of the negative electrode terminal, curved toward the electrode group and reaches the sealed portion. The other edge portion of the negative electrode terminal extends from the case through the sealed portion. The positive electrode terminal satisfies formula (1) given below and the negative electrode terminal satisfies formula (2) given below: t2×W2≧0.25 Sp (1) t3×W3≧0.25 Sn (2)
摘要翻译:非水电解质电池包括扁平电极组,壳体,正极端子和负极端子。 正极端子在正极端子的一个边缘部分弯曲,朝向电极组弯曲并到达密封部分。 正极端子的另一边缘部分从壳体延伸穿过密封部分。 负极端子在负极端子的一个边缘部分弯曲,朝向电极组弯曲并到达密封部分。 负极端子的另一边缘部分从壳体延伸穿过密封部分。 正极端子满足下面给出的公式(1),负极端子满足下面给出的公式(2):<?in-line-formula description =“In-line formula”end =“lead”?> t < (1)<?in-line-formula description =“In-line Formulas”end =“tail”? > <?in-line-formula description =“In-line Formulas”end =“lead”?> t 3 SUB> xW 3 SUB >> = 0.25 S < (2)<?in-line-formula description =“In-line Formulas”end =“tail”?>
摘要:
A nonaqueous electrolyte secondary battery, having an internal resistance of 10 mΩ or less as an alternating-current impedance value of 1 kHz, comprises a metal outer container, a nonaqueous electrolyte contained in the container, a positive electrode contained in the container, a negative electrode contained in the container, a separator interposed between the negative electrode and the positive electrode, a negative electrode lead having one end connected to the negative electrode, and a negative electrode terminal attached to the outer container so as to be connected electrically to the other end of the negative electrode lead, at least the surface of the negative electrode terminal which is connected to the negative electrode lead being formed of aluminum alloy with an aluminum purity of less than 99 wt. % containing at least one metal selected from the group consisting of Mg, Cr, Mn, Cu, Si, Fe and Ni.
摘要:
An assembled battery voltage detecting apparatus includes a sampling switch section which samples a voltage of each of single batteries, capacitors charged with voltages of single batteries, a transfer switch section to transfer a charge voltage charged in each of the capacitors, a ground potential setting switch section which, in the case of reading the voltage charged in the capacitor, connects a reference electric potential of the capacitor to a grounding terminal of a voltage detecting apparatus, and a voltage detecting circuit which controls a switching timing of each of the above switches, and then reads a voltage of each capacitor.
摘要:
A positive electrode material for non-aqueous electrolyte secondary batteries having high rate characteristics and high energy density, and a battery using the same are provided. The non-aqueous electrolyte secondary battery includes a positive electrode containing a positive electrode material, a conductive agent and a binder; a negative electrode; a separator; and a non-aqueous electrolyte, in which the positive electrode material contains core particles and a coating material that covers from 10% to 90% of the surfaces of the core particles, the core particles are formed of a compound represented by LiaMbPO4 (wherein M represents at least one element selected from Fe, Mn, Co and Ni, and satisfies the relations: 0
摘要:
A nonaqueous electrolyte secondary battery, having an internal resistance of 10 mΩ or less as an alternating-current impedance value of 1 kHz, comprises a metal outer container, a nonaqueous electrolyte contained in the container, a positive electrode contained in the container, a negative electrode contained in the container, a separator interposed between the negative electrode and the positive electrode, a negative electrode lead having one end connected to the negative electrode, and a negative electrode terminal attached to the outer container so as to be connected electrically to the other end of the negative electrode lead, at least the surface of the negative electrode terminal which is connected to the negative electrode lead being formed of aluminum alloy with an aluminum purity of less than 99 wt. % containing at least one metal selected from the group consisting of Mg, Cr, Mn, Cu, Si, Fe and Ni.
摘要:
A nonaqueous electrolyte secondary battery, having an internal resistance of 10 mΩ or less as an alternating-current impedance value of 1 kHz, comprises a metal outer container, a nonaqueous electrolyte contained in the container, a positive electrode contained in the container, a negative electrode contained in the container, a separator interposed between the negative electrode and the positive electrode, a negative electrode lead having one end connected to the negative electrode, and a negative electrode terminal attached to the outer container so as to be connected electrically to the other end of the negative electrode lead, at least the surface of the negative electrode terminal which is connected to the negative electrode lead being formed of aluminum alloy with an aluminum purity of less than 99 wt. % containing at least one metal selected from the group consisting of Mg, Cr, Mn, Cu, Si, Fe and Ni.
摘要:
A storage battery system includes a battery module including nonaqueous electrolyte secondary batteries. The storage battery system further includes a temperature sensor which measures a temperature of the battery module, a voltmeter which measures a voltage of each of the nonaqueous electrolyte secondary batteries and a charge control unit which controls a maximum end-of-charge voltage V1 (V) of the nonaqueous electrolyte secondary batteries to fall within the range defined in formula (1) given below when the temperature of the battery module is not lower than 45° C. and is not higher than 90° C.: 0.85×V0≦V1≦0.96×V0 (1)
摘要:
A nonaqueous electrolyte secondary battery includes a negative electrode including a negative electrode current collector and a negative electrode active material layer that is formed on a first region of the negative electrode current collector, a negative electrode terminal connected to an edge section of a second region of the negative electrode current collector, a positive electrode including a positive electrode active material layer positioned to face the negative electrode active material layer and the second region, and a stress imparting member which imparts a tensile stress or a shearing stress to the second region.