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
  • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
  • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the 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
  • H01M10/05—Accumulators with non-aqueous electrolyte
  • H01M10/052—Li-accumulators
• • 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
  • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
  • H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
• • 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
  • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
  • H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
  • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
  • H01M50/10—Primary casings; Jackets or wrappings
  • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
  • H01M50/105—Pouches or flexible bags
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
  • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
  • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
  • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
  • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
  • H01M50/211—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch cells
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
  • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
  • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
  • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
  • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
  • H01M50/222—Inorganic material
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
  • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
  • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
  • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
  • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
  • H01M50/227—Organic material
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
  • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
  • H01M50/50—Current conducting connections for cells or batteries
  • H01M50/569—Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals
• • 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 an electric power storage device of flat cells and frame members, and a frame member for use in such an electric power storage device.
• Electric energy storage cells in the form of flat and rectangular built memory elements.
• Such electric energy storage cells are e.g. so-called Pouch- or Coffeebag cells, ie flat and rectangular built memory cells for electric energy (battery cells, accumulator cells, capacitors, ...), in particular galvanic cells whose electrochemically active part is surrounded by a foil-like envelope, through which electrical connections (poles) in sheet form, the so-called (current) arresters are guided.
• an electric energy storage device from a plurality of such electric energy storage cells, which are combined by means of a clamping device into a block. The electrical series or parallel connection of the cells is carried by conductive
• Cell block called) and connect the above exposed on a narrow side of the cells poles by suitable means
• Connecting means for interconnecting the cells are used by the cells Battery electronics also cables for measuring the cell voltage for balancing (charge compensation) or temperature measurement laid. This results in additional costs, space is needed and the weight increases.
• Electric power storage device in particular (but not only) in view of the above aspects to improve.
• An electric power storage device comprises: a
• a plurality of flat memory cells for storing and outputting electrical energy with opposed, flat current conductors, a plurality of frame elements for holding the memory cells, and a clamping means for clamping the cells with the frame elements to a stack, each memory cell including at least one sensing element Measurement
• the frame elements first recesses for receiving the measuring or sensing elements and second recesses, the having the first recesses communicating, wherein the second recesses of the frame members
• taken together form at least one extending over the length of the device channel for receiving the cable.
• an electric energy storage device is understood to mean a device which is also designed and set up to emit electrical energy, it being possible for the energy to be stored in one or more memory cells.
• the memory cells themselves are naturally also for Delivery of electrical energy designed and set up.
• a memory cell in the sense of the present invention is any type of device for the electrical storage of energy. The term thus includes in particular
• electrochemical or galvanic cells of the primary type which store their once stored chemical energy over a
• accumulators which by supplying electric charges, ie of electrical energy, by a
• Storage cells in the sense of the invention can in particular have an active part, within which charging and, if necessary, conversion processes of electrical energy take place and which are dependent on e.g. foil-like envelope is preferably gas-tight and liquid-tight enveloped.
• so-called current conductors protrude from the interior of the active part, with which they are in a conductive connection by the enclosure to the outside of the cell and allow a connection of the active parts of the cells with each other or with a consumer.
• a flat shape is understood to be a geometric shape which has a smaller extent in one spatial direction than in two others
• a frame element in the sense of the invention e.g. a substantially prismatic, preferably flat in the extrusion direction spatial structure understood that in a radially inner region has a lower material thickness than in the radially outer region, which in particular prismatic hollow space forms are also included, i.
• Space shapes that have no material in a radially inner region.
• the material thickness may, but need not, be substantially constant in the radially outer region (the frame in the actual sense).
• a device of any kind which also for the passive or active detection of a - A - physical size is designed and set up; this device may be limited to a bare end connected to or exposed to a measurement environment or to an electrical system and / or
• the sensing element may also be designed and arranged to transmit signals and / or charges towards the measurement environment, e.g. to a current collector; It can therefore in particular also the function of a
• the measuring or sensing element may have means for attachment to or in the measurement environment.
• a cable is in the context of the invention, each device for the management of
• a recess is understood to mean any removal of material from a geometric basic shape; it may be e.g. to indentations, depressions, pockets, depressions or other cavities, blind or through holes or grooves or the like act.
• a channel is understood in the context of the invention, a continuous, over the length of the device as a whole extending recess through which a cable can be performed.
• the length of the device is essentially the length to be understood by the
• the channel is determined on stacked frame members; However, the channel may continue to extend through components that are placed, for example, the front side of the stack of frame members; likewise, the channel can each end before a last frame element, as far as there Meßcel. Sensor elements are still available.
• Measurement of a physical quantity, in particular the temperature appropriate is, it is also possible to create an accurate characteristic profile, in particular temperature profile of the memory cells, which, for example, an accurate and targeted control in particular of the temperature balance of the cell stack, such as individual local cooling allows. If the measurement extends eg to the voltage, a suitable regulation of the
• Recesses formed channel, the data cable e.g. are performed inconspicuously and protected using a dead space and also remain due to the removal of material of the frame elements weight neutral. Since the current collector of the memory cells face each other, a reliable interconnection of the memory cells, in series and / or
• Frame elements are clamped to a stack, a number of flat memory cells can be arranged to save space and easy to install in a stable block.
• the device may be configured such that the second recesses are open from the radially outer edge of the frame elements. In this way, the channel from the outside easily for wiring, maintenance and
• the data cable in the case of an outwardly open channel can be performed inconspicuously and protected.
• At least one current conductor of the memory cells is provided in each case for attaching the measuring or sensing elements.
• electrical variables such as the cell voltage can be tapped directly, and others physical quantities such as temperature can be well transported and tapped from the inside of the cell via the current conductors. It is placing under a mounting in the given context
• the attachment can be done by clamping, gluing, riveting, soldering or the like, ie
• predetermined distance between adjacent cells can be maintained, which can be set so that no clamping force is exerted on an electrochemically active part of the cells.
• This can also have advantages in terms of reliability and durability of the cells;
• the flat sides of the cells can radiate heat to a heat transfer medium or, if necessary, also absorb it, for example when starting at low temperatures.
• suitable means such as an individual coolant guide or the like, the temperature in each space between adjacent cells can be controlled individually.
• the clamping of the memory cells between the frame elements on the current conductors is facilitated by the opposite arrangement of the current conductor; This also facilitates a reliable location and position fixation of the memory cells in the block.
• the invention is due to the sensitive temperature balance particularly advantageous applicable to Li-ion batteries.
• a Li-ion battery is in the context of the invention, an electric energy storage device
• galvanic cells in particular secondary cells, in which a source voltage is generated by displacement of lithium ions between a positive and a negative electrode.
• the positive electrode, the negative electrode, and an electrolyte e.g. layer-wise in a film stack, wherein the layer sequence or parts thereof can be repeated one or more times and wherein the layers (films) of the positive electrodes with a first current conductor and the layers (films) of the negative electrodes with a second current collector in Connection stand and the electrolyte sheets serve as barrier layers.
• the invention also relates to a frame member designed for use in an electrical energy storage device as described above.
• Fig. 1 is a perspective view of a cell block as a
• FIG. 2 is a perspective view of a frame member of the cell block of Fig. 1;
• FIG. 3 shows an illustration of the frame element from FIG. 2 together with a memory cell
• FIG. Fig. 4 is an exploded perspective view of the cell assembly of Fig. 1;
• FIG. 5 shows an illustration of the cell arrangement with measuring and / or sensor elements and supply lines of the cell block from FIG. 1, without frames and
• Fig. 6 is an end view of the cell block of Fig. 1, cut in a plane between two adjacent memory cells.
• Fig. 1 is a perspective view of a cell block as a
• a cell block 1 has a plurality of memory cells 2 (galvanic cells, accumulator cells) or the like, only one visible in FIG. 1), a plurality of
• Intermediate frame 4 two end frame 6, two pressure goggles 8 and four tie rods 10 with nuts 12 placed on both sides.
• One of the two end frames 4, the intermediate frame 6 and the second of the two end frames 4 form in this order a block which is held together by means of the tie rods 10 and the nuts 12 via the pressure glasses 8 arranged at the end.
• the pressure goggles 8 have a window 14 and are thus formed frame-shaped.
• the memory cells 2 are within the structure formed by the stacked frames 4, 6, as will be described in greater detail below.
• FIG. 2 one of the intermediate frame 4 of the block of Fig. 1 is shown individually.
• the intermediate frame 4 has a cuboid outline with two flat sides and four circumferential narrow sides.
• the surface normal of the flat sides corresponds to the stacking direction of the frames in the cell block of Fig. 1.
• a window-like opening is formed so that the left-side ridges form a frame.
• Recess 26 formed. It should be noted that in the right vertical ridge, the recess is formed on the front, while in the left vertical ridge, the recess is formed on the back.
• two through holes 28 are formed, which connect the pressure surfaces 22 in the stacking direction.
• sleeves 30 are respectively used.
• the sleeves 30 are made of a good electrical conductor material and serve the through-connection between the pressure surfaces 22 of this web.
• End frame 6 wherein there is formed a recess 26 only on the cell-facing side.
• FIG. 3 shows the intermediate frame 4 from FIG. 2 together with a memory cell 2.
• the memory cells 2 are constructed as so-called flat cells or pouch cells with opposite, flat current conductors. More specifically, each memory cell 2 has an active part 32, one
• the active part 32 is sandwiched by two films (not shown in detail), wherein the protruding edges of the films are gas- and liquid-tight welded together and the so-called Seal seam 34 form. From two opposite narrow sides of the films (not shown in detail), wherein the protruding edges of the films are gas- and liquid-tight welded together and the so-called Seal seam 34 form. From two opposite narrow sides of the films (not shown in detail), wherein the protruding edges of the films are gas- and liquid-tight welded together and the so-called Seal seam 34 form. From two opposite narrow sides of the
• Memory cell 2 protrude current conductors 36 as a positive pole (+) and a negative pole (-).
• the current conductors 36 each have two holes 38 (hereinafter referred to as "pole holes") which are aligned with the through holes 28 and the sleeves 30 in the intermediate frame 4.
• pole holes holes which are aligned with the through holes 28 and the sleeves 30 in the intermediate frame 4.
• Pole holes 38 is equal to the diameter of the through holes 28 and the inner diameter of the sleeves 30th
• a sensor element 40 is mounted, which is housed with its body in the recess 26 of the intermediate frame 4.
• the sensor element 40 is for outputting an output signal at its terminal end as a function of the temperature and the
• Sensor element 40 for receiving the voltage and / or a signal as a function of other physical variables such as temperature, etc.
• the sensor element is set up. Furthermore, the sensor element is set up to be over
• Terminal end to receive a low-voltage current and deliver it to the trap 36 or vice versa. Therefore, an electrical charge of the cell 2 can be supplied or removed from it via a control device, not shown in more detail, and thus a charge balance between the cells 2 within the cell block 1 can be brought about. Furthermore, in the
• Control unit the output signal of the sensor element 40 are evaluated and, for example, a locally individualized temperature compensation via suitable means of heat engineering can be realized.
• a locally individualized temperature compensation via suitable means of heat engineering can be realized.
• FIG. 4 the cell block 1 of FIG. 1 in a perspective
• Memory cells 2 are held firmly between the frame 4, 6 and 4, 4.
• the frames 4, 6 are arranged in the stack so that the sleeves 30 come to lie on alternate lateral sides of the stack. As shown in Fig. 5, in which the arrangement of the cells in the cell stack 1 with sensing elements 40 and leads 18, but without frame 4, 6 and
• Clamping elements 10, 12 is shown, furthermore, the memory cells 2 are arranged in the stacking direction with alternating pole position of the current conductor 36. That is, current leads 36 are always provided by adjacent memory cells 36
• the sleeves 30 in turn are pressed in the stack by means of the clamping elements 10, 12 against the opposite current conductor 36 and thus provide an electrically conductive connection between them. In this way, continue in the stack the
• a respective current conductor 36 of the first and last cell 2 with the first and last pressure goggles 8 is connected.
• the pressure goggles 8 are made of a conductive material and therefore represent the poles of the cell block 1.
• the tie rod 10 is electrically insulated by suitable means such as a coating or a continuous sleeve of an insulating material against the conductive parts, ie the current conductors 36, the pressure glasses 8 and the contact sleeves 30, and a short circuit is effectively avoided.
• a gap may be provided between the tie rod 10 and the components penetrated by it.
• the frames 4, 6, the pressure goggles 8 and the memory cells 2 are kept in a radially defined position; Suitable means for centering are about pass-pins or a geometrically matched shape of the stacked components. Also not shown in the figures, is also provided for a suitable isolation of the nuts 12 against the pressure goggles 8; this can be done by insulating
• FIG. 6 is an end view of the cell block of FIG. 1 cut in a plane between two adjacent memory cells. It is here the position of the sensor elements 40 (only the upper terminal end is visible) and the leads 18 in the formed by the notches 24
• an electro-energy storage device which according to the invention comprises: a plurality of flat memory cells for storing and emitting electrical energy with opposing, flat current conductors, a plurality of
• Frame elements for holding the memory cells, and a clamping means for clamping the cells with the frame elements to a stack, wherein each memory cell at least one sensor element for measuring
• the frame elements first recesses for receiving the measuring or sensing elements and second recesses, the having the first recesses communicating, wherein the second recesses of the frame members
• taken together form at least one extending over the length of the device channel for receiving the cable.
• the cell block 1 is an electric energy storage device in the sense of
• the end frame 4 and intermediate frame 6 are examples of
• the tie rods 10 and nuts 12 are examples of a clamping means in the context of the invention.
• the pressure goggles 8 are examples of pressure end pieces in the sense of the invention.
• the sensor element 40 is an example of a measuring or sensing element according to the invention.
• the recess 26 is an example of a first recess according to the invention, and the notch 24 is an example of a second recess according to the invention.
• a supply channel 16 is an example of a channel in the sense of the invention.
• the opening 20 is an example of a passage opening in the sense of the invention.
• the low-voltage cables 18 are examples of a cable in the sense of the invention.
• a centering device for radial centering of the cells 2 within a cell block or relative to the spacer elements.
• a centering device for radial centering of the cells 2 within a cell block or relative to the spacer elements.
• Such a centering device can be realized, for example, from dowel pins and fitting bores in the spacer elements and arresters or other measures.
• sensing elements 40 are attached to each current conductor 38.
• the attachment of the measuring or sensing elements 40 to the current conductors 38 are an exemplary possibility. However, they can be attached anywhere on the cell, as far as this offers constructive or functional advantages.
• the measuring or sensing elements are each designed as a rivet, with which the measuring cable is attached via cable shoes.
• tie rods are used on each side.

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• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Electrochemistry (AREA)
• General Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Manufacturing & Machinery (AREA)
• Inorganic Chemistry (AREA)
• Battery Mounting, Suspending (AREA)
• Secondary Cells (AREA)
• Connection Of Batteries Or Terminals (AREA)

Priority Applications (6)

Applications Claiming Priority (2)

Publications (2)

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• 2009
  • 2009-06-30 DE DE102009031127A patent/DE102009031127A1/de not_active Withdrawn
• 2010
  • 2010-06-07 US US13/381,428 patent/US20120189887A1/en not_active Abandoned
  • 2010-06-07 WO PCT/EP2010/003409 patent/WO2011000458A2/de not_active Ceased
  • 2010-06-07 BR BRPI1011583A patent/BRPI1011583A2/pt not_active IP Right Cessation
  • 2010-06-07 CN CN2010800294378A patent/CN102484221A/zh active Pending
  • 2010-06-07 JP JP2012518029A patent/JP2012531718A/ja active Pending
  • 2010-06-07 KR KR1020127002543A patent/KR20120060819A/ko not_active Withdrawn
  • 2010-06-07 EP EP10726428.5A patent/EP2449612B1/de not_active Not-in-force

Non-Patent Citations (1)

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