摘要:
The present invention enables correct detection of the state of a relay provided on each of the positive and negative terminal sides of a secondary battery. A positive-side main relay 12 makes or breaks continuity between first and second positive contact points, and a negative-side main relay 15 makes or breaks continuity between first and second negative contact points. A microcomputer 2 can measure a first voltage between the first positive and first negative contact points, a second voltage between the second positive and first negative contact points, and a third voltage between the first positive and second negative contact points. The microcomputer 2 detects the state of the positive-side main relay 12 based on a voltage measurement result obtained when the first and second voltages are measured synchronously, and detects the state of the negative-side main relay 15 based on a voltage measurement result obtained when the first and third voltages are measured synchronously.
摘要:
An accurately and precisely calculation of the state of charge of a sodium-sulfur battery may be made by determining a state of charge Qr according to expression (1) given below even if the sodium-sulfur battery is applied to compensate for fluctuations in the power generated by a natural energy generating device: Qr = 100x(1-(Qu/(Qa-Qsf))) ... (1) where Qu: used capacity; Qa: product capacity; and Qsf: residual capacity in final year; and Qsf = f1(Cef) ... (2) where f1(Cef): conversion function for determining the residual capacity Qsf in the final year on the basis of the equivalent cycle Cef in final year.
摘要:
According to an embodiment, a battery pack device includes a plurality of battery modules, a cell detector, and a determiner. Each of the plurality of battery modules stores a plurality of cells. The cell detector detects a cell detection signal representing whether a cell is present or absent at each of a plurality of positions in each battery module. The determiner determines the arrangement state of the cells in each battery module based on the cell detection signal detected by the cell detector, determines the presence/absence of an abnormality from the determined arrangement state of the cells and the connection state of each battery module, and outputs an abnormal signal in case of the abnormality.
摘要:
Disclosed is an apparatus and method for estimating a parameter of a secondary battery. The apparatus includes a sensor configured to measure an open circuit voltage (OCV m ) of the secondary battery at a first depth of discharge (DOD'), the open circuit voltage (OCV m ) corresponding to a difference between a predetermined original cathode voltage (V c,o ) at the first depth of discharge (DOD') and an anode voltage (V a ), and a control unit configured to calculate an anode voltage (V a ) from the original cathode voltage (V c,o ) and the open circuit voltage (OCV m ), determining that the original anode voltage (V a,o ) is identical to the anode voltage (V a ), determining a second depth of discharge (DOD") corresponding to the original anode voltage (V a,o ), and determining capacity degradation (Δcapa) of the secondary battery according to a difference between the first depth of discharge (DOD') and the second depth of discharge (DOD").
摘要:
The invention relates to a method for determining a safe and economic voltage operating range dependent on current density and/or a specific energy consumption operating range of a cell element (2) of an electrolyser (1). In order to provide a method which leads to improved voltage results and/or specific energy consumption results, the invention proposes that the voltage operating range and/or specific energy consumption operating range is determined depending on an operating parameter associated with the cell element (2).
摘要:
Une méthode et un système d'estimation de l'état de charge d'un élément comprenant une électrode positive, par exemple de type phosphate lithié, dont le profil de charge présente un domaine d'état de charge compris entre environ 30 et environ 90% dans lequel la variation de la tension est 10 fois moins rapide que pour un état de charge supérieur à 90%. La détermination de l'état de charge pour un état de charge supérieur à 90% est basée soit sur l'utilisation d'une relation d'étalonnage entre la tension de l'élément et son état de charge lorsque l'élément est traversé par un courant d'intensité inférieure à une valeur seuil prédéterminée et que sa tension s'est stabilisée, soit sur l'utilisation de coulométrie dont on corrige le résultat en tenant compte de la précision du capteur de courant.
摘要:
Eine Batteriesteuervorrichtung für eine Batterie (4) eines zweiten Batterietyps, insbesondere einer Li-lonen-Batterie, ist in einem batterie-elektrischen Fahrzeug (1), insbesondere einer mobilen Arbeitsmaschine oder einem Flurförderzeug, als Traktionsbatterie in ein Batteriefach (13) einsetzbar sowie auswechselbar. Das Fahrzeug (1) weist eine Batterieladezustandseinrichtung auf, die für eine Batterie (14) eines ersten Batterietyps, insbesondere für eine Bleibatterie, anhand von mindestens einem Parameter, insbesondere Ruhespannung (15) und/oder Belastungsspannung und/oder Strom, den Ladezustand bestimmen kann. Die Batteriesteuervorrichtung (5) kann den Ladezustand des zweiten Batterietyps erfassen und in mindestens einen dem Ladezustand entsprechenden Parameter für den ersten Batterietyp umsetzen und diesen umgesetzten Parameter über ein Verbindungsmittel (16) an die Batterieladezustandseinrichtung übertragen, so dass durch die Batterieladezustandseinrichtung des Fahrzeugs (1) der Ladezustand des zweiten Batterietyps erfasst werden kann.
摘要:
Method of determining the identity of a battery pack (62) comprising the steps of discharging a capacitive component (82) of a battery pack circuit of the battery pack; initiating recharging of the capacitive component after the capacitive component is substantially discharged; waiting a predetermined period of time after initiating the recharging of the potential capacitive component; and measuring a voltage output of the battery pack circuit after the predetermined period of time to determine whether the voltage output is above or below a predetermined threshold value.