EP2719053A1 - Système d'urgence pour coupures de courant - Google Patents

Système d'urgence pour coupures de courant

Info

Publication number
EP2719053A1
EP2719053A1 EP12727112.0A EP12727112A EP2719053A1 EP 2719053 A1 EP2719053 A1 EP 2719053A1 EP 12727112 A EP12727112 A EP 12727112A EP 2719053 A1 EP2719053 A1 EP 2719053A1
Authority
EP
European Patent Office
Prior art keywords
battery
charging
emergency system
electronics
charge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP12727112.0A
Other languages
German (de)
English (en)
Inventor
Edward Pytlik
Rainer Hald
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
VARTA Microbattery GmbH
Original Assignee
VARTA Microbattery GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by VARTA Microbattery GmbH filed Critical VARTA Microbattery GmbH
Publication of EP2719053A1 publication Critical patent/EP2719053A1/fr
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/007188—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
    • H02J7/007192—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature
    • H02J7/007194—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature of the battery

Definitions

  • the present invention relates to an emergency system for power failures, which can in particular secure the operation of a data processing device.
  • the emergency system comprises a single- or multi-cell, rechargeable battery and a charging electronics for charging this battery, which can be arranged together on a circuit board of a data processing device.
  • Emergency power failure systems are well known in many fields of engineering. Particularly in the field of data processing, it is necessary to avoid data loss due to uncontrolled shutdowns of data processing equipment as a result of power failures and power interruptions. Suitable emergency systems in these cases should temporarily take over the power supply of at least the most important components of data processing equipment in order to enable a proper shutdown of the same.
  • a rechargeable nickel-metal hydride battery which is basically suitable for such applications, is described for example in EP 1 01 1 163 B1.
  • Particularly suitable as capacitors are so-called double-layer capacitors ("supercaps") .
  • supercaps double-layer capacitors
  • Double-layer capacitors have the great advantage that they can supply very high pulse currents very quickly.
  • their capacitance is limited according to the nature of a capacitor and, like all capacitors, they have a decreasing voltage characteristic.
  • a much higher capacity offer rechargeable batteries such as those described in EP 1 01 1 163 B1.
  • these have the disadvantage that they can be overloaded at the relatively high temperatures that may occur in data processing facilities in operation, which can lead to a drastic reduction in their life expectancy.
  • the present invention has for its object to provide an emergency system for power outages, which does not have the disadvantages of the prior art.
  • the emergency power failure system comprises a single-cell or multi-cell, rechargeable battery and a charging electronics for charging this battery.
  • the battery may be a NiMH battery (Nickel Metal Hydride), a NiCd Battery (Nickel Cadmium), NiZn Battery (Nickel Zinc), Ag 2 O / Zn Battery (Silver Oxide Zinc) or a lithium-ion battery act. All these electrochemical systems are fundamentally in question.
  • the battery is particularly preferably a battery with an aqueous, alkaline electrolyte. Accordingly, batteries based on NiCd, NiMH and NiZn are particularly preferred.
  • the emergency system according to the invention is characterized in particular by the fact that the charging electronics provides a charging voltage at which the battery does not overload even at a temperature of up to 80 ° C, preferably even up to 85 ° C. ,
  • the charging electronics are designed such that they provide a charging voltage, in which the battery is transferred to a charging state and / or maintained in a charging state, in which they to a value between 1% and 30%, preferably between 5% and 25%, in particular between 10% and 20%, of their nominal capacity (at 20 ⁇ 2 ° C).
  • the voltage curve of batteries during charging and discharging processes is fundamentally very dependent on the temperature. For example, at low temperatures (e.g., between 0 and 20 ° C), relatively high voltages are required to fully charge a battery of the above type. At high temperatures (for example, between 60 and 80 ° C), a battery can become overloaded very quickly at the same voltages (and otherwise the same charging parameters).
  • the voltage limit beyond which a battery does not overload at a given temperature must always be determined system-dependent. However, it is always the case that at a charging voltage at which a battery is transferred to the stated states of charge (charged to between 5% and 30% of its nominal capacity), no overcharging occurs at the temperatures mentioned.
  • Batteries in the specified state of charge are particularly well suited as an energy supply unit for emergency systems for power failures, since they are able to deliver several very high pulse currents in quick succession. Due to their low charge state they can never be overloaded at the temperatures usually prevailing in data processing equipment. As a result, they have an almost unlimited life under the conditions mentioned. Despite the very low state of charge seen in absolute terms, the amount of current available in the battery used according to the invention considerably exceeds that of a double-current capacitor of the same volume. As a rule, pulse currents of up to about 5 to 10 times the pulse length can easily be called up.
  • a NiMH battery is chosen as the battery for the emergency system and the charging voltage per cell of battery 1 is 325 V ⁇ 5 mV,
  • battery is a NiCd battery and the charging voltage per cell of battery 1 is 335 V ⁇ 5 mV,
  • the charging voltage supplied by the charging electronics is constant in preferred embodiments, ie does not change during charging (constant-voltage charging method). As charging progresses, the charging current decreases because of the decreasing voltage difference between the voltage supplied by the charging electronics and that of the battery. Once the voltages have equalized, only a residual current flows to compensate for the self-discharge of the battery. The battery is initially transferred to a defined state of charge. leads and then held on this. This process is repeated after each power failure in which the emergency system according to the invention was used. It is known to the person skilled in the art how charging electronics are built which have the characteristics required here. For example, the charging voltage can be adjusted to the required values by means of suitable resistors.
  • the battery of an emergency system can basically be a single-cell or a multi-cell battery.
  • the individual cells of the battery are connected in series with each other.
  • the voltage values mentioned above only refer to one cell at a time. If, for example, a nickel-metal hydride battery with two series-connected nickel-metal hydride cells is used, then the charging voltage is preferably 2.65 +/- 10 mV.
  • the above voltage values apply to the whole battery.
  • the charging voltage is preferably 1, 325 +/- 5 mV.
  • the accumulators described in EP 1 01 1 163 B1 which has already been mentioned several times, can be used very well as batteries for the emergency system according to the invention.
  • the content of EP 1 01 1 163 B1 is hereby incorporated by reference in its entirety into the content of the present description.
  • the battery and the charging circuit are arranged in a common housing, wherein electrical contacts for contacting the charging circuit with an external voltage source and for contacting the battery of the emergency system with a device to be supplied with emergency Ström device are provided on the housing.
  • an emergency system designed in accordance with the invention can easily be applied to conventional circuit boards for data processing equipment. Such boards are also the subject of the present invention.
  • Particularly suitable data processing devices to be backed up are those in a network environment, ie server systems in which the aspect of data security plays a very important role.
  • the emergency system according to the invention and the board according to the invention can of course also be easily installed in single-user computers as well as in mobile terminals such as notebooks.
  • a method for operating data processing devices such as the mentioned servers is also included in the present invention.
  • a data processing device comprising a single or multicellular rechargeable battery and charging electronics for charging this battery as such is operated in accordance with the present invention such that the battery is recharged by the (appropriately designed) charging electronics a charge state is maintained, in which the battery is not overloaded even at a temperature of up to 80 ° C, preferably of up to 85 ° C.
  • the battery is held by the charging electronics to a state of charge, as has already been defined above.
  • the procedure according to the invention can offer solutions in all technical fields in which double-layer capacitors play a role. Accordingly, the use of a combination of a single-cell or multicellular, rechargeable battery, as described above, is also possible. Ben, and an operated at the parameters defined above charging electronics as an electronic component with the properties of a double-layer capacitor subject of the present invention.
  • FIG. 1 shows the charging characteristics of a unicellular nickel-metal hydride battery at various temperatures.
  • the charging characteristics of the battery are shown at -10 ° C, 0 ° C, + 10 ° C, + 25 ° C, + 45 ° C, + 55 ° C, + 65 ° C and + 85 ° C. It can be seen that the voltage of a battery, which has a temperature of 85 ° C, does not exceed a value of 1, 32 V when charging. To fully charge a battery having a temperature of, for example, 25 ° C, much higher voltages are required. However, charging a nickel-metal hydride battery at these voltages would inevitably lead to overcharging the battery when heated to 85 ° C.
  • the charging voltage is selected so that even at 85 ° C can not be overcharged.
  • the charging process can be stopped. This is, as can be clearly seen in Fig. 1, achieved at all temperatures, in some cases significantly less than two hours.
  • the state of charge of the battery is then usually between 5% and 30% of its nominal capacity (at 20 ⁇ 2 ° C). The resulting residual current only compensates for the self-discharge and can be maintained (almost) as long as desired.
  • FIGS. 2A to 2E The high pulse current carrying capacity of an emergency system according to the invention can be seen in FIGS. 2A to 2E.
  • end-charge curves of a single-cell nickel-metal hydride battery are shown, which were kept at a voltage of 1.32 V by charging electronics at different temperatures:

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

L'invention concerne un système d'urgence pour coupures de courant, comprenant une batterie rechargeable à une ou plusieurs cellules du groupe des batteries NiMH, NiCd, NiZn, Ag2O/Zn ou lithium-ion ainsi qu'une électronique de charge pour charger cette batterie, l'électronique de charge mettant à disposition une tension de charge à laquelle la batterie ne se surcharge pas, même à une température jusqu'à 80°C, de préférence jusqu'à 85°C. Elle concerne en outre une carte pour un dispositif de traitement de données ainsi qu'un procédé pour faire fonctionner un dispositif de traitement de données, dans lequel un tel système d'urgence est utilisé. L'utilisation d'une combinaison d'une batterie rechargeable à une ou plusieurs cellules et de l'électronique de charge mentionnée comme composant électronique présentant les propriétés d'un condensateur double couche est également décrite.
EP12727112.0A 2011-06-07 2012-05-23 Système d'urgence pour coupures de courant Ceased EP2719053A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011077073A DE102011077073A1 (de) 2011-06-07 2011-06-07 Notfallsystem für Stromausfälle
PCT/EP2012/059646 WO2012168080A1 (fr) 2011-06-07 2012-05-23 Système d'urgence pour coupures de courant

Publications (1)

Publication Number Publication Date
EP2719053A1 true EP2719053A1 (fr) 2014-04-16

Family

ID=46262081

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12727112.0A Ceased EP2719053A1 (fr) 2011-06-07 2012-05-23 Système d'urgence pour coupures de courant

Country Status (5)

Country Link
US (1) US9653930B2 (fr)
EP (1) EP2719053A1 (fr)
CN (1) CN103765719B (fr)
DE (1) DE102011077073A1 (fr)
WO (1) WO2012168080A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106959741A (zh) * 2017-04-07 2017-07-18 广东浪潮大数据研究有限公司 一种存储服务器及其电池管理系统

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015008274A1 (de) * 2015-06-26 2016-12-29 Auma Riester Gmbh & Co. Kg Stellantrieb mit einer Notenergieversorgungseinrichtung, Verfahren zu dessen Betrieb sowie Verwendung einer Notenergieversorgungseinrichtung an einem Stellantrieb

Citations (2)

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EP2315301A1 (fr) * 2009-10-16 2011-04-27 Sanyo Electric Co., Ltd. Dispositif d'alimentation électrique et procédé de contrôle de l'opération de charge/décharge du dispositif d'alimentation électrique
US20110115441A1 (en) * 2009-11-18 2011-05-19 Takahiro Matsuyama Charging control method, charging control computer program, charging control device, secondary cell system, secondary cell power supply, and cell application device

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DE19857638A1 (de) 1998-12-14 2000-06-15 Varta Geraetebatterie Gmbh Elektrischer Akkumulator in Form einer Knopfzelle
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JP4252953B2 (ja) * 2004-11-26 2009-04-08 株式会社日立製作所 電力貯蔵式き電線電圧補償装置及び方法
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JP5502282B2 (ja) * 2007-07-13 2014-05-28 三洋電機株式会社 組電池の充電方法
JP4660523B2 (ja) 2007-09-19 2011-03-30 レノボ・シンガポール・プライベート・リミテッド 電池セルの表面温度で充電制御する充電システム
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WO2010000027A1 (fr) * 2008-07-03 2010-01-07 Cochlear Limited Pile implantable amovible positionnée à l’intérieur d’une bobine d’implant
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Publication number Priority date Publication date Assignee Title
EP2315301A1 (fr) * 2009-10-16 2011-04-27 Sanyo Electric Co., Ltd. Dispositif d'alimentation électrique et procédé de contrôle de l'opération de charge/décharge du dispositif d'alimentation électrique
US20110115441A1 (en) * 2009-11-18 2011-05-19 Takahiro Matsuyama Charging control method, charging control computer program, charging control device, secondary cell system, secondary cell power supply, and cell application device

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See also references of WO2012168080A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106959741A (zh) * 2017-04-07 2017-07-18 广东浪潮大数据研究有限公司 一种存储服务器及其电池管理系统

Also Published As

Publication number Publication date
DE102011077073A1 (de) 2012-12-13
CN103765719B (zh) 2017-08-11
WO2012168080A1 (fr) 2012-12-13
CN103765719A (zh) 2014-04-30
US20140103882A1 (en) 2014-04-17
US9653930B2 (en) 2017-05-16

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