EP2198476A2 - Système d'accumulation d'énergie - Google Patents

Système d'accumulation d'énergie

Info

Publication number
EP2198476A2
EP2198476A2 EP08803245A EP08803245A EP2198476A2 EP 2198476 A2 EP2198476 A2 EP 2198476A2 EP 08803245 A EP08803245 A EP 08803245A EP 08803245 A EP08803245 A EP 08803245A EP 2198476 A2 EP2198476 A2 EP 2198476A2
Authority
EP
European Patent Office
Prior art keywords
energy storage
storage system
container
housing
solvent
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.)
Withdrawn
Application number
EP08803245A
Other languages
German (de)
English (en)
Inventor
Frank Baur
Carsten GÖTTE
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.)
Continental Automotive GmbH
Original Assignee
Continental Automotive 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 Continental Automotive GmbH filed Critical Continental Automotive GmbH
Publication of EP2198476A2 publication Critical patent/EP2198476A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/004—Details
    • H01G9/08—Housing; Encapsulation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/14—Arrangements or processes for adjusting or protecting hybrid or EDL capacitors
    • H01G11/20—Reformation or processes for removal of impurities, e.g. scavenging
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/78—Cases; Housings; Encapsulations; Mountings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/4235—Safety or regulating additives or arrangements in electrodes, separators or electrolyte
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/52—Removing gases inside the secondary cell, e.g. by absorption
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/13—Energy storage using capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

  • the invention relates to an energy storage system that contains an e- lectric component, a housing and a protective device.
  • the object of the invention is to provide an energy storage system which avoids the escape of harmful for people and the environment decomposition products of solvents.
  • An energy storage system comprises an electrical component with at least one solvent, a housing that encloses the component in an interior, and a protective device that chemically binds degradation products of the at least one solvent of the component. Because there is a protective device in addition to the electrical component, it may be possible to release te degradation products of the at least one solvent bound and / or collected. A release of decomposition products of the solvent may be possible, for example, in the event of damage to the energy storage system. Possible damage cases are, for example, mechanical damage to the energy storage system, an electrical defect which, for example, triggers a short circuit, overcharging as a result of defective charge regulation, or thermal overheating, for example due to a fire.
  • an undamaged energy storage system there is no contact between the solvent that has the electrical component and the housing because the device is surrounded by a shell that prevents the solvent from flowing into the interior.
  • an undamaged energy storage system has an interior containing no decomposition products of the solvent.
  • Such an energy storage system can be used meaningfully, for example, in the field of auto motive.
  • a damage for example a rear-end collision
  • resulting decomposition products of the solvent can be bound and retained in the electrical component.
  • a safe use of a solvent in the electrical component is possible by such an energy storage system.
  • the energy storage system may further comprise a protective device comprising a coating of the housing.
  • the housing may have an inner side facing the electrical component, on which the coating is present. Occurs from the electrical component, a degradation product of at least one solvent in the interior, it is chemically bonded to the inside of the housing by the protective device, the coating. In particular, in a case of damage that leads to damage to the housing, it is avoided that degradation products of the solvent get into the environment. Outflow of the degradation products from the damaged housing is completely or largely prevented.
  • the housing can be dimensionally stable, deformable and impact resistant.
  • a possible material for such a housing is, for example, acrylonitrile-butadiene-acrylate (ABS).
  • the solvent in the electrical device may comprise acetonitrile.
  • the solvent may also comprise other organic solvents, for example methanol.
  • the electrical component can also comprise electrolyte solutions based on aqueous systems which, for example, have KOH or H2SO4 in water.
  • Degradation products which can be formed from the solvent, in particular from acetonitrile, include cyanide-containing compounds such as, for example, hydrocyanic HCN.
  • Hydrocyanic acid is a poisonous gas that should be kept from escaping into the environment.
  • the decomposition products may also have other harmful compositions which are to be prevented from exiting the electrical component.
  • the coating on the inside of the housing may include chemical compounds for binding the degradation products of the at least one solvent.
  • Such chemical compounds for binding the degradation products may be compounds selected from the group consisting of Fe (II) compounds, Fe (III) compounds, Cu (II) Compounds, Ag (I) compounds and organic compounds include.
  • the compounds may include silver nitrate AgNO 3 , iron hydroxides Fe (OH) 2 or Fe (OH) 3 , copper chloride CuCl 2 or hemoglobin derivatives.
  • the coating may comprise the chemical compounds alone or in a matrix, for example a binder.
  • a possible chemical compound for binding the decomposition products of the solvent may be, for example, iron hydroxide Fe (OH) 2 .
  • iron hydroxide Fe (OH) 2 in a reaction with hydrocyanic HCN, stable complex iron (II) cyanides are formed according to the following reaction equation:
  • the electrical component When used as a chemical compound for binding the decomposition products of the solvent CuCl 2 , it first forms Cu (CN) 2 / Cu (CN) with a CN excess and then [Cu (CN) 4 J 3 -, which is particularly stable.
  • the electrical component may comprise a double-layer capacitor.
  • a solvent is used for the electrolytic solution, which may include acetonitrile.
  • the electrolytic solution which may include acetonitrile.
  • the energy storage system may comprise a protection device having an electronic sensor and a container, and in which container chemical compounds for binding the degradation products of the at least one solvent are present.
  • the sensor is electrically coupled to a closure of the container.
  • the sensor may be selected from a group comprising pressure sensors for detecting pressure and / or vibration and chemical sensors for detecting degradation products of the at least one solvent.
  • the sensor can send a signal to the closure of the container as soon as the energy storage system is shaken, exposed to pressure or within the housing decomposition products of the at least one solvent are released and detected.
  • Activation of the closure of the container may comprise the opening of the container.
  • the sensor is arranged on the housing, for example on the inside of the housing or on the outside of the housing.
  • the container may further be arranged in the interior or on the housing, wherein a connection between the interior of the housing and the closure of the container is present.
  • a connection between the chemical compounds located inside the container for binding the decomposition products and the interior of the housing In the container may further be present a gas for generating overpressure in the container compared to the interior of the housing.
  • This Gas can include CO2, for example.
  • the chemical compound for binding the decomposition products may be present in the container as granules.
  • the container may, for example, comprise a cartridge in which the gas and the chemical compounds are present.
  • the chemical compound when the closure of the container is opened, can be introduced into the space by means of the gas.
  • the sensor activates the closure of the container, which is detected upon detection of a
  • the gas used for the introduction may optionally suppress the formation of flames and cool the interior and thus protect against overheating.
  • the sensor can also be mechanically activated to prevent leakage of the decomposition products of the solvent when needed, for example when installing or removing the energy storage system.
  • a device for pressure equalization between the interior of the housing and the environment of the energy storage system is present on the housing.
  • a device may include a predetermined breaking point in the housing, which generates an opening of the housing for controlled balancing of the pressure at overpressure in the housing.
  • a predetermined breaking point can, for example, a rupture disk, which tears at increasing pressure in the interior, or a valve element which controls the excess pressure in the environment in a controlled manner.
  • the energy storage system may include a protection device that includes a container and an electronic sensor.
  • the container has an activatable device for collecting the reaction products between the chemical compounds and the degradation products of the at least one solvent inside the container, and the device is driven electronically by the sensor. Activation of this device by the sensor creates a negative pressure in the container.
  • the activation may include an increase in the volume of the device for collecting the reaction products.
  • the closure of the container may further comprise a valve for sucking the decomposition products of the solvent from the interior of the housing into the container. In case of damage, the sensor triggers the increase of the volume of the device for collecting the reaction products and opening of the valve.
  • FIG. 1 shows a schematic side view of an embodiment of the energy storage system with a coating.
  • FIG. 2 shows a schematic side view of a further embodiment with a sensor and a container.
  • Figure 3 shows a further embodiment in a schematic side view with a device for collecting and a container.
  • FIG. 4 shows, analogously to FIG. 1, the schematic side view of an embodiment of the energy storage system with a coating and a double-layer capacitor as an electrical component.
  • FIG. 1 shows the schematic side view of an embodiment of the energy storage system.
  • the electrical component 10 which contains a solvent 20, for example acetonitrile, is located in the interior 40 of the housing 30.
  • the electrical component is surrounded by a shell 15 which separates the solvent from the interior of the housing.
  • the housing has an inner wall 35 facing the electrical component.
  • On the inside of the housing is a coating consisting of the chemical compound 50 for binding the decomposition products.
  • the coating may further contain a matrix, for example a binder, in which the chemical compounds 50 are located. From the electrical component 10, for example, damage or vibration of the energy storage system, degradation products 25 of the solvent 20, in particular gaseous degradation products, emerge, which is indicated schematically by the arrows on the electrical component.
  • the decomposition products 25 may be, for example, decomposition products of acetonitrile, for example hydrocyanic acid HCN.
  • the chemical compounds 50 can be, for example, Fe (II) compounds,
  • Fe (III) compounds Cu (II) compounds, Ag (I) compounds, and organic compounds.
  • the compounds may include silver nitrate AgNC> 3, iron hydroxides Fe (OH) 2 or Fe (OH) 3, copper chloride CuCl2 or hemoglobin derivatives.
  • reaction products 55 complexes that are stable and non-volatile, so that they are harmless to the environment. Even in the case of damage to the housing 30 (not shown here) can thus escape from the housing no harmful degradation products.
  • FIG. 2 shows a further embodiment of the energy storage system in a schematic side view. It is again the electrical component 10 with the shell 15 containing a solvent 20 in the interior 40 of the housing 30. From the electrical component, for example, in a damage degradation products 25 of the solvent 20 escape, which is indicated schematically by arrows.
  • a sensor 60 and a container 70 are also located in the housing. The sensor 60 and the container 70 may also be located outside the housing 30. Then, however, the shutter 71 of the container 70 is still in communication with the inner space 40 of the housing 30 (not shown here).
  • the sensor is electrically connected to the closure 71 of the opening 72 of the container 70 and, upon pressure, vibration or detection of the decomposition products 25 of the solvent 20, can activate the closure 71 such that the container 70 is opened.
  • the container which may be a cartridge, for example can, is the chemical compound 50, for example in the form of granules, which can bind the decomposition products 25 of the solvent 20, and a gas 73, for example CO2, which provides an overpressure in the container compared to the interior 40 of the housing , If the container 70 is opened, the chemical compounds 50 and the gas 73 can emerge from the container 70, which is indicated by an arrow. As soon as the chemical compounds 50 are in the interior space 40, they can bind the degradation products 25 leaving the electrical component 10.
  • the reaction products 55 are stable, and non-volatile.
  • a device for pressure equalization 38 which includes a predetermined breaking point in the housing, and the pressure is too large pressure regulated in the interior.
  • a device may include a rupture disc that ruptures at overpressure, or a valve member. By a valve element, the pressure can be controlled lowered, and damage to the housing can be avoided. Because the decomposition products 25 of the solvent 20, for example hydrocyanic acid, are bound by the chemical compound 50, they are harmless and do no harm to the environment.
  • FIG. 3 shows a further embodiment of the energy storage system.
  • the electrical component 10 with the shell 15 is located in the interior 40 of the housing 30.
  • the electrical component for example a double-layer capacitor, may contain a solvent 20, for example acetonitrile.
  • decomposition products 25 of the solvent for example hydrocyanic acid
  • the housing 30 also includes an electronic sensor 60, which is connected to an activatable device 80 for collecting the reaction products 55 from the reaction of the degradation products 25 with the chemical compounds 50 is connected.
  • the activatable device 80 is located on the container 70, whose closure 71 comprises a valve. In the container 70 are the chemical compounds 50 for binding the decomposition products 25 of the solvent 20.
  • the activatable device 80 is activated to collect the reaction products 55, this means that the volume of this device increases and thus creates a negative pressure in the container 70.
  • the decomposition products 25 of the solvent 20 emerging from the electrical component 10 are sucked through the closure 71 into the container 70, where they can react with the chemical compound 50, which is present for example as granules in the container 70.
  • the bound, that is rendered harmless reaction products 55 are collected in the device 80.
  • FIG. 4 shows, analogously to FIG. 1, a schematic side view of an embodiment, wherein the electrical component 10 is a double-layer capacitor.
  • the embodiments shown in FIGS. 2 and 3 may also comprise such a double-layer capacitor as an electrical component.
  • the double-layer capacitor is surrounded by the sheath 15 and has contacts 11 and electrodes 12. Not shown here are the lines to electrical connections outside the housing, through which the electrical component is powered for operation with electricity.
  • the solvent 20, together with electrolytes dissolved therein surrounds the electrodes.
  • FIGS. 1 to 4 can be varied as desired. It should also be noted that the invention is not limited to these examples, but allows other, not listed here embodiments.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Electric Double-Layer Capacitors Or The Like (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

L'invention concerne un système d'accumulation d'énergie comportant un composant électrique (10), un solvant (20) et un dispositif de protection qui lie chimiquement les produits de dégradation (25) du solvant. Ce système d'accumulation d'énergie permet d'éviter une pollution de l'environnement par les produits de dégradation du solvant.
EP08803245A 2007-09-05 2008-08-27 Système d'accumulation d'énergie Withdrawn EP2198476A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007042085A DE102007042085B3 (de) 2007-09-05 2007-09-05 Energiespeichersystem
PCT/EP2008/061178 WO2009030611A2 (fr) 2007-09-05 2008-08-27 Système d'accumulation d'énergie

Publications (1)

Publication Number Publication Date
EP2198476A2 true EP2198476A2 (fr) 2010-06-23

Family

ID=40093059

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08803245A Withdrawn EP2198476A2 (fr) 2007-09-05 2008-08-27 Système d'accumulation d'énergie

Country Status (4)

Country Link
US (1) US8373969B2 (fr)
EP (1) EP2198476A2 (fr)
DE (1) DE102007042085B3 (fr)
WO (1) WO2009030611A2 (fr)

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FR2950191B1 (fr) * 2009-09-15 2013-03-29 Valeo Equip Electr Moteur Module de stockage d'energie, notamment pour un systeme micro-hybride de vehicule automobile
CN106659920B (zh) * 2014-04-13 2022-03-11 斐源有限公司 用于液体电解质电池组的安全方法和系统
DE102021102345A1 (de) 2021-02-02 2022-08-04 Volkswagen Aktiengesellschaft Batteriesystem mit Drucktank und Kraftfahrzeug

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Also Published As

Publication number Publication date
DE102007042085B3 (de) 2009-03-05
US20100202101A1 (en) 2010-08-12
WO2009030611A3 (fr) 2009-10-15
US8373969B2 (en) 2013-02-12
WO2009030611A2 (fr) 2009-03-12

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