摘要:
A method of manufacturing a semiconductor device that includes forming a dummy gate insulating film and a dummy gate electrode on a semiconductor substrate having a channel-forming region. An etching treatment including a first treatment of treating the surface of the exposed surface of the insulating layer with an etching gas containing ammonia and hydrogen fluoride and a second treatment of decomposing and evaporating the product formed in the first treatment are included in removal step of the dummy gate insulating film.
摘要:
A fan motor is controlled via a switching circuit from the moment when a cooling fan control routine is started until the moment when the rotational speed of the fan motor reaches a control-switching speed so that the higher the detected auxiliary battery voltage is when the cooling fan control is started, the lower the command duty ratio that is set. Accordingly, it is possible to activate the fan motor more reliably and to avoid generating excessive operating noise by the cooling fan when the fan motor is activated.
摘要:
A battery characteristic detecting method according to the invention includes a first step in which constant current discharge from a battery is performed at a predetermined current value, and a voltage during constant current discharge is measured; a second step in which overpotential for mass transfer control in the battery or resistance for the mass transfer control in the battery is calculated based on the voltage measured in the first step; and a third step in which a determination that a characteristic change has occurred in the battery is made, when the overpotential for the mass transfer control in the battery or the resistance for the mass transfer control in the battery calculated in the second step is larger than a predetermined threshold value.
摘要:
A maximum dischargeable current Idmax obtained when electric power output from a battery is increased from a battery current Ib and a battery voltage Vb at present under internal resistance R at present (an operating point 510) until the battery voltage reaches a lower limit voltage Ve (an operating point 520), is shown as follows: Idmax=Ib+(Vb−Ve)/R. Therefore, in accordance with multiplication of the lower limit voltage Ve and the maximum dischargeable current Idmax, it is possible to predict maximum dischargeable electric power at which the battery voltage does not become lower than the lower limit voltage even if discharge limitation is temporarily relaxed, as a relative value with respect to the battery voltage and the battery current at present. When the discharge electric power limitation for the battery (the power storage device) is temporarily relaxed in accordance with a discharge request made by a load, a discharge electric power permissible value is set to correspond to the maximum dischargeable electric power, such that the output voltage of the power storage device does not fall outside a controlled voltage range from the lower limit voltage to an upper limit voltage.
摘要:
When a drive power demand Pv* is greater than 0, the control procedure of the invention sets the greater between an engine speed demand Nereq and a lower engine speed limit Nemin to a target rotation speed Ne* of an engine (step S160). The engine speed demand Nereq represents a rotation speed of the engine at a specific drive point that ensures efficient output of an engine power demand Pe*. The lower engine speed limit Nemin represents a rotation speed of the engine at another specific drive point for a constant-speed drive of a hybrid vehicle at a current vehicle speed V. When the drive power demand Pv* is equal to 0, the control procedure of the invention cuts fuel supply to the engine and sets the lower engine speed limit Nemin to the target rotation speed Ne* of the engine (step S190). The engine is accordingly driven at the rotation speed of not lower than the lower engine speed limit Nemin and has a quick response to a demand for output power increase from the engine. This arrangement desirably reduces the loading of a battery and prevents premature deterioration of the battery.
摘要:
For the measurement of the voltage of each block which constitutes a battery pack with different timings, a voltage (V) and current (I) every block the current of which is measured at the same timing as the voltage is measured are read (S100-S108) and an inner resistance (R) is derived from the temperature (T) of the assembled battery (S110, S112). A value of the difference (IN−IN+1) of two currents corresponding to two voltages of respective blocks of a plurality of battery blocks multiplied by the inner resistance (R) of the battery pack is added to the difference (VN−VN+1) of two voltages to calculate the voltage difference ΔV (S116). When the maximum value ΔVmax of the calculated voltage difference ΔV exceeds the threshold value Vref, the state is judged to be an overdischarge (S122, S124, S128).
摘要翻译:对于构成具有不同定时的电池组的每个块的电压的测量,读取在与测量电压相同的定时测量其电流的每个阻塞的电压(V)和电流(I)(S100) -S8),并且内部电阻(R)源自组电池的温度(T)(S110,S112)。 对应于多个电池块的各个块的两个电压乘以内部电阻的两个电流的差的值(I N N 1 N 1 N + 1 N) 将电池组的电压差加到两个电压的差值(V N N N -V N N + 1),以计算电压差DeltaV(S1116)。 当计算出的电压差DeltaV的最大值DeltaVmax超过阈值Vref时,判断为过放电状态(S122,S124,S128)。
摘要:
A battery pack controlling apparatus for controlling input to or output from a battery pack is provided. The battery pack includes a plurality of blocks in series connection. Each of the plurality of blocks includes a plurality of batteries in series connection. The battery pack controlling apparatus includes: a battery power input/output section for controlling input and output of battery power to and from the battery pack; a block voltage detection section for detecting a block voltage of each of the plurality of blocks; a battery current detection section for detecting a battery current of the battery pack; an unusual heating detection section for detecting unusual heating of at least one of the plurality of batteries based on the block voltage and the battery current; and a vehicle controlling section for controlling the battery power input/output section based on results of unusual heating detection by the unusual heating detection section. The unusual heating detection section includes an internal resistance calculation section for calculating an internal resistance of each of the plurality of blocks based on the block voltage and the battery current. The unusual heating detection section detects unusual heating of the at least one of the plurality of batteries based on the internal resistance of each of the plurality of blocks and a predetermined threshold value.
摘要:
A device and method is provided that can detect overcharge reliably by separating heat generated by internal resistance and heat chemically generated upon overcharging in a secondary battery. Based on the temperature of the secondary battery detected every first predetermined time by a battery temperature detection section, a temperature gradient operation section calculates a temperature gradient indicating a temperature increase per unit time for every second predetermined time that is longer than the first predetermined time. When a temperature gradient determination section determines that the temperature gradient is larger than a predetermined temperature gradient threshold, which is preset according to the charged state of the secondary battery, N times in a row (where N is a natural number), a fully charged state of the secondary battery is detected.
摘要:
Means for estimating the charged state of a battery, capable of accurately estimating an SOC even though the battery repeats charging/discharging in short cycles. The charging/discharging current Ib measured by current sensing means (10) is integrated, and pseudo-SOC estimating means estimates a pseudo-SOC. Electromotive force estimating means (16) estimates the open voltage Voc from the pseudo-SOC. Voltage change estimating means (18) estimates the voltage change Vr due to the internal resistance from the charging/discharging current Ib. Dynamic voltage change estimating means (20) estimates the voltage change Vdyn due to the change of the charging/discharging current. An adder (22) adds the Voc, Vr, and Vdyn to calculate an estimated voltage Vest of the battery. SOC correction calculating means (26) calculates the correction of the SOC for equalizing the estimated voltage Vest to the measured voltage Vmes measured by voltage sensing means (12), and an adder (28) adds the correction to the pseudo-SOC to estimate the SOC of the battery.
摘要:
A voltage detector (12) detects the voltage levels of the battery blocks of the battery set (10). A presence of an overdischarged cell is detected when a voltage difference between each of the battery blocks reaches or exceeds a predetermined value (for example, 1V). At this point, a battery ECU (14) sets the SOC value of the battery set (10) at the lower control limit value (for example, 20%). This triggers an HV ECU (16) to control the load (18) such that charging is effectuated in the battery set (10). If further discharge occurs, the battery set (10) is disconnected from the load (18) by a relay (20).