Classifications

• • 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
  • H01M10/60—Heating or cooling; Temperature control
  • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
  • H01M10/625—Vehicles
• • 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
  • H01M10/60—Heating or cooling; Temperature control
• • 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
  • H01M10/60—Heating or cooling; Temperature control
  • H01M10/61—Types of temperature control
  • H01M10/613—Cooling or keeping cold
• • 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
  • H01M10/60—Heating or cooling; Temperature control
  • H01M10/61—Types of temperature control
  • H01M10/615—Heating or keeping warm
• • 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
  • H01M10/60—Heating or cooling; Temperature control
  • H01M10/65—Means for temperature control structurally associated with the cells
  • H01M10/654—Means for temperature control structurally associated with the cells located inside the innermost case of the cells, e.g. mandrels, electrodes or electrolytes
• • 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
  • H01M10/60—Heating or cooling; Temperature control
  • H01M10/65—Means for temperature control structurally associated with the cells
  • H01M10/659—Means for temperature control structurally associated with the cells by heat storage or buffering, e.g. heat capacity or liquid-solid phase changes or transition
• • 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

Definitions

• the present invention relates to a device for tempering a battery (1) comprising a battery (2) and a latent heat accumulator (3), which can change its state of aggregation from liquid to solid and thereby
• Heat of crystallization for heating the battery (2) can give off and wherein the crystallization can be triggered by a pulse.
• the present invention further relates to products comprising this device and a method for controlling the temperature of batteries.
• the usable capacity and performance of conventional Li-ion batteries is strongly influenced by the ambient temperature of the component. Therefore, especially at low ambient temperatures, it is necessary to set the battery to near-room temperature, i.e., prior to or directly at start-up. To heat 18 ° C to 20 ° C. For this purpose, separate heating systems are optionally heated in conjunction with an additional battery of other chemistry (e.g., lead acid).
• chemistry e.g., lead acid
• Heat of crystallization for heating is known, for example, from gel pocket warmers.
• a gel pocket warmer For a gel pocket warmer, the
• Crystallization be initiated for example by a bendable metal plate.
• the invention relates to a device for controlling the temperature of a battery (1) comprising a battery (2) and a latent heat accumulator (3), which can change its state of aggregation from liquid to solid and thereby
• Heat of crystallization for heating the battery (2) and emits the crystallization is triggered by a pulse.
• the invention also provides a device for tempering a battery (1) comprising a battery (2) and a latent heat accumulator (3), which can absorb excess heat of the battery (2) and thereby changes its state of aggregation from solid to liquid and thus the battery (2) cools.
• the device is characterized
• the latent heat storage (3) is a gel.
• the device is characterized
• the latent heat store (3) is located in a housing (4) which is arranged around the battery (1).
• the housing can completely enclose the battery.
• the housing can only enclose parts of the battery.
• the device is characterized in that the latent heat accumulator (3) is located in a plurality of separate housings (4) arranged around the battery (1).
• the device is characterized in that the change of the state of aggregation of the latent heat storage (3) in the separate
• Housings (4) can be controlled independently.
• the device is characterized in that the latent heat accumulator (3) is located directly in the battery (1).
• Another aspect of the invention relates to a product, characterized in that it comprises a device according to the invention.
• the product is a device or a vehicle.
• Another aspect of the invention relates to a method for controlling the temperature of a battery, characterized in that a battery (2) with a
• Latent heat storage (3) is brought into contact and wherein the battery is heated by the latent heat storage (3) has a liquid
• Has state of aggregation and the latent heat storage (3) his State of matter from liquid to solid can change while heat of crystallization to heat the battery (2) and the crystallization of the latent heat storage (3) is triggered by a pulse, and wherein the battery is cooled by the fact that the latent heat storage (3) has a solid state and the latent heat storage (3) can absorb heat and thereby changes its state of matter from solid to liquid.
• Another aspect of the invention relates to a method for heating a battery (2), characterized in that a battery (2) with a
• Latent heat store (3) has a liquid state of matter and the latent heat storage (3) can change its state from liquid to solid and thereby heat of crystallization to heat the battery (2) emits and wherein the crystallization of the latent heat storage (3) is triggered by a pulse.
• Another aspect of the invention relates to a method for cooling a battery (2), characterized in that a battery (2) with a
• Latent heat storage (3) has a solid state of matter and the
• Latent heat storage (3) can absorb heat while keeping its
• the present invention utilizes the in the crystallization of a
• Latent heat storage (3) released heat of crystallization for heating a battery (2) at low ambient temperature to an optimum
• the liberated heat of crystallization may be used to heat a battery (2) to a preferred temperature range for operation of the battery (eg 18 °, 19 °, 20 ° C, 40 ° C, 60 ° C).
• the preferred temperature range depends on the cell chemistry used and the battery type.
• Electrochemical cells are electrochemical energy storage and
• battery is used as a generic term for battery, electrochemical cell and accumulator.
• Ah ampere-hours
• ampere-seconds coulomb
• the usable capacity of a battery depends on the discharge conditions, for example, the temperature and the history of the battery (for example, duration and conditions of storage before discharge).
• Self-discharge speed depends, among other things, on the type of battery and the temperature. The lower the storage temperature, the lower the self-discharge. Therefore, it may be advantageous to store the battery at low temperature just before use, to the optimum
• a lithium battery is a primary cell that uses lithium as the active material in the negative electrode. In contrast to the lithium-ion battery, it is not designed to be rechargeable. The latter are often referred to as lithium battery.
• lithium batteries are the Lithium thionyl chloride battery, lithium manganese dioxide battery, lithium sulfur dioxide battery, lithium carbon monofluoride battery, lithium iodine battery, lithium iron sulfide battery.
• Examples of other batteries are the alkaline manganese battery, nickel
• Oxyhydroxide battery mercury oxide zinc battery, silver oxide zinc cells, zinc brownstone cell, zinc chloride battery, zinc air battery,
• An accumulator (rechargeable battery) is a reusable storage for electrical energy, mostly based on an electrochemical system, and thus a
• a rechargeable battery In contrast to a non-rechargeable battery of primary cells, a rechargeable battery consists of one or more rechargeable secondary cells.
• accumulators are used as a starter battery for generating power for light, on-board electronics and for the starter for starting the internal combustion engine. They provide power until the engine is running, then the accumulator is recharged via the generator operating as a generator. Similarly, accumulators can be used in motorcycles, ships and aircraft.
• rechargeable batteries examples include the NiCd (nickel-cadmium) rechargeable battery, the NiH 2 (nickel-hydrogen) rechargeable battery, the NiMH (nickel-metal hydride) rechargeable battery, NiFe (nickel-iron) rechargeable battery, the Li Ion - (Li-ion accumulator, LiPo (lithium-polymer) accumulator, LiFe (lithium-metal) accumulator, LMP (lithium-metal-polymer) accumulator, Li-Mn - (lithium-manganese -) Accumulator, the LiFeP0 4 - (Lithium-Iron-Phosphate) accumulator, the LiTi - (lithium titanate) accumulator, the LiS - (lithium-sulfur)
• Rechargeable battery the Rechargeable Alkaline Manganese (RAM) rechargeable battery, PTMA (2,2,6,6-tetramethylpiperidinoxy-4-yl methacrylate) rechargeable battery, Na / NiCI (sodium nickel chloride high temperature) rechargeable battery, the SCiB - (Super charge lon-battery) accumulator, the SnC / Li 2 S - (tin-sulfur-lithium)
• the latent heat store (3) is arranged around the battery (2).
• the latent heat storage is a storage material that can change its state of aggregation from liquid to solid and vice versa, and thereby releases or absorbs energy.
• the latent heat store (3) is preferably located in one or more containers, for example one or more housings (4), one or more foils in order to fix the latent heat store (3) in the liquid state.
• Latent heat storage (3) is located for example in a container made of pure plastic or a container made of a plastic with additives (for example ceramic particles) to increase the thermal conductivity or a container made of metal, which preferably has a high thermal conductivity (eg copper, aluminum) and optionally in addition has a low density.
• additives for example ceramic particles
• the latent heat storage is present as a liquid that performs a phase change on cooling.
• Usually salt water or a special gel with high heat storage coefficient is used as material for latent heat storage.
• the phase change can be recognized by the fact that the
• Latent heat storage is hard and thick when charged (i.e., cooled).
• the latent heat storage can be added to a substance that prevents fouling.
• Latent heat storage (3) work by utilizing the enthalpy of reversible thermodynamic changes in state of the storage material, preferably the solid-liquid phase transition (solidification / melting).
• Latent heat storage contain, for example, special salts or paraffins as content, which serve as a storage medium.
• the memory material When charging the storage material of the latent heat storage (3), the memory material is melted, which can thus absorb a lot of heat energy (heat of fusion). This process is reversible. When solidifying, the storage material returns exactly this amount of heat.
• Glauber's salt or alum or sodium acetate trihydrate may be used as
• Storage medium can be used in latent heat storage.
• Sodium acetate trihydrate for example, is liquefied at a melting temperature of 58 ° C and remains even at much lower temperatures - possibly down to -20 ° C - liquid and exists there as a supercooled melt in one
• the crystallization can be triggered by a pulse, for example a metal plate, which is pressed into the latent heat storage.
• a pulse or trigger events or materials that initiate the crystallization of the latent heat storage are referred to as a pulse or trigger.
• triggers are platelets that can be pushed into the latent heat storage.
• Triggers are also crystallization seeds that are added to the latent heat storage.
• Triggers can be pressure waves that trigger crystallization in the supersaturated solution of latent heat storage. The compression of the latent heat storage can also trigger the crystallization.
• the advantage of this heat storage technique is based on storing as much heat energy in as little mass as possible in a temperature range which is precisely defined by the melting temperature of the latent heat storage used. For technical applications of liquid-crystalline latent heat storage, recrystallization shortly below the melting temperature is generally desired.
• Crystallization is the process of forming crystals from a supersaturated solution.
• the material to be crystallized must first be supersaturated. This happens, for example, by cooling processes of solutions or melts, or by evaporation of the solvent.
• the supersaturation can also be produced by mixing two solutions, each containing one of the components.
• the previously solved Molecules or elements in a regular, partly substance-specific form can be accelerated by adding seed crystals, which then continue to grow in the supersaturated solution.
• Algglomeration sites i.e. without nucleation, supercooling down to -30 ° C is possible before the water molecules are arranged in a crystal lattice.
• a vibration can trigger the crystallization spontaneously.
• the heat of crystallization (solidification heat) is released when a substance changes its state of aggregation from liquid to solid. Due to the
• Fig. 1 shows the schematic structure of a device for temperature control of a battery (1).
• Figure 1 shows a device for temperature control of a battery (1), with battery
• the latent heat storage (3) is arranged around the battery cell (2).
• the latent heat storage is a storage material that can change its state of matter from liquid to solid and vice versa and thereby emits or absorbs energy.
• Latent heat storage (3) in one or more containers for example one or more housings (4), one or more film to fix the latent heat storage (3) in the liquid state.
• the functioning device for battery temperature control (1) is as follows:
• the device for temperature control of a battery (1) has on the one hand a
• Latent heat storage absorbs the heat energy.
• the heat supply causes a phase transition in the latent heat storage, causing the
• Storage material changes into the liquid state of aggregation.
• the absorption of the excess heat of the battery by the latent heat storage leads to melting of the storage material.
• the heat dissipation cools the battery.
• the device for controlling the temperature of a battery (1) has a heating function.
• the latent heat storage (3) is in the liquid state.
• the crystallization of the latent heat storage (3) is triggered. In this case, there is a phase transition from the liquid to the solid state in the latent heat storage. During the crystallization, the heat of crystallization is released, that of the at
• Latent heat storage (3) adjacent battery (2) is recorded. This will warm the battery up.
• the device acts as a heating element.
• Heat of crystallization can be used to heat or preheat the battery.
• the housing (4) can be designed such that the latent heat accumulator is mounted in several separate housings.
• the individual housings can be controlled together.
• the individual housings can be controlled independently of one another. This means that the crystallization can be triggered independently in the individual housings. This means that the pulses can be triggered independently of each other in the individual housings. About the number of triggered
• Crystallization processes or the number of driven housing or the number of driven latent heat storage can be adjusted in this way, the amount of heat released. In this way, regardless of the low outlet temperature, the optimum operating temperature of the battery can be adjusted. With a large number of small cases, the
• the battery can be tempered and optionally the temperature of the battery can be set exactly.
• Latent heat storage also be installed in the battery. Preferably, the latent heat storage is then in small intervals in the battery.
• the crystallization of the latent heat storage and thus the heating function of the device for temperature control of a battery (1) is not triggered when the ambient temperature is high enough.
• the latent heat storage (1) then remains off and does not heat up the battery.
• the device according to the invention for controlling the temperature of a battery (1) can be used in all stationary or mobile batteries regardless of the chemical composition.
• the invention also includes products comprising the device for controlling the temperature of a battery (1), for example devices and vehicles.
• the device for controlling the temperature of a battery (1) can be used in all devices in which a battery is to operate at a certain temperature, for example in motor vehicles, in stationary power stores (for example in connection with photovoltaic systems or wind turbines) or in
• a particular embodiment of the invention relates to the use of the device for temperature control of a battery (1) in vehicles, such as cars, ships, aircraft, motorcycles.
• the advantages of the device according to the invention for controlling the temperature of a battery (1) are that a car can start at very low temperatures without requiring an energy-intensive preheating of the battery by means of a separate system. Energy consumption for preheating the battery at low ambient temperatures is reduced. With the device, a faster heating of the battery can be achieved, the warm-up phase is shortened. With the device, operation of the battery in the optimal
• Temperature range can be ensured. This can increase the life of the battery. An additional battery heater may be unnecessary. As a result, the manufacturing and repair costs are reduced.
• the invention can be detected clearly and simply visually or by simple measuring technology on the product by the use of a heating / cooling medium with latent heat storage.

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• Engineering & Computer Science (AREA)
• Manufacturing & Machinery (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Electrochemistry (AREA)
• General Chemical & Material Sciences (AREA)
• Secondary Cells (AREA)
• Battery Electrode And Active Subsutance (AREA)

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• 2011
  • 2011-01-12 DE DE201110002549 patent/DE102011002549A1/de not_active Withdrawn
• 2012
  • 2012-01-04 WO PCT/EP2012/050063 patent/WO2012095337A1/fr active Application Filing
  • 2012-01-04 JP JP2013548796A patent/JP2014503973A/ja active Pending
  • 2012-01-04 US US13/978,754 patent/US20140004394A1/en not_active Abandoned
  • 2012-01-04 CN CN2012800050796A patent/CN103299477A/zh active Pending
  • 2012-01-04 EP EP12700456.2A patent/EP2664022A1/fr not_active Withdrawn

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