Classifications

• • 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
• • 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
  • H01M50/296—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by terminals of battery packs
• • 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
  • 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
  • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular 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
  • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
  • H01M50/264—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
• • 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
  • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
  • H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
• • 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
  • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
  • H01M50/514—Methods for interconnecting adjacent batteries or 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
  • H01M50/50—Current conducting connections for cells or batteries
  • H01M50/543—Terminals
  • H01M50/547—Terminals characterised by the disposition of the terminals on the cells
  • H01M50/55—Terminals characterised by the disposition of the terminals on the cells on the same side of the cell
• • 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
  • H01M50/543—Terminals
  • H01M50/552—Terminals characterised by their shape
  • H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
• • 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

• Electric power cell and electric power unit are Electric power cell and electric power unit
• the present invention relates to an electric power cell and an electric power unit consisting of a plurality of electric power cells stacked in a block.
• batteries primary storage
• accumulators secondary storage
• electrical energy for storing electrical energy
• Primary accumulators are typically charged only once and disposed of after discharge, while secondary accumulators allow multiple (from a few 100 to over 10,000 cycles) of charge and discharge.
• batteries are sometimes referred to as batteries, such as vehicle batteries, which are known to experience frequent charging cycles.
• primary and secondary storage on the basis of lithium compounds gain in importance. These have a high energy density and thermal stability, provide a constant voltage with low self-discharge and are free of the so-called memory effect.
• JP 07-282841 A a similar arrangement is shown in which the individual cells are inserted into a housing.
• the individual cells are loosely placed in individual compartments of a housing, and the protruding contacts above are connected by means of bolts. The whole arrangement is then closed with a lid from above.
• An electric power cell is designed as a spatial body with a plurality of outer surfaces and has two area-formed current conductors, which protrude from one of the outer surfaces of the cell substantially at right angles and are arranged substantially parallel to each other surface.
• the current conductors each have at least one bore in the direction of their surface normals, wherein the bore pattern of one current collector is mirror-symmetrical to the bore pattern of the other current collector.
• an electric power cell is to be understood as a structurally self-contained cell which is also capable of delivering electrical energy. It can be a galvanic primary cell, which can only deliver the energy stored in it once, or a galvanic secondary cell, which can be charged and discharged several times, or a fuel cell or a capacitor cell or the like. same. It may in particular be a galvanic secondary cell, wherein at least one electromagnetically active material of the cell comprises lithium or a lithium compound.
• a current conductor means an externally accessible terminal, which is connected to the electrochemically active parts in the interior of the galvanic cell and also serves as a pole of the cell.
• an outer surface of a body is to be understood as an area which forms an outer boundary of the volume of the body.
• a flat body is to be understood as meaning a body whose extent in two spatial directions of a body-bound Cartesian coordinate system is substantially greater than in the third spatial direction;
• the third spatial direction is defined as the thickness direction or surface normal direction and the other two spatial directions are defined as surface-parallel directions.
• a bore image is understood to mean the arrangement of one or more bores in a body.
• a mirror-symmetrical arrangement of the bore patterns is to be understood as meaning that the bores are bored on a current collector, on a plane defined by the directions of the surface normal of the current conductors and the outer surface of the cell from which the current conductors protrude correspond to the other Stromableiters.
• the mirror plane is preferably the vertical, in the width direction centered plane; However, to achieve the invention, it is harmless if the mirror plane is not centered in the width direction.
• the notion of mirror symmetry excludes congruence, ie alignment of all holes in both current conductors, but not the alignment of some of the holes.
• An electric power cell according to this aspect of the invention also has the advantage that when several cells are combined in a block, the holes of the successive current collector, regardless of the polar direction of the individual cells, always aligned. As a result, z. B. based on the holes during assembly an optical or mechanical direction control. Also, cables or the like can be routed through the holes.
• the spatial body of such an electric power cell has two flat sides and four narrow sides (that is, has a flat structure), wherein the outer surface from which the current conductors protrude is formed by one of the narrow sides, an arrangement of the cells in a stack is a larger unit to build up, especially easy. It proves to be an advantage if the current conductors are offset in the direction of their surface normal, in particular close to the edge of the flat side of the cell, because then they reach the outermost layers of an active part of the cell without much deflection.
• the current conductors are arranged offset in the surface-parallel direction, in particular so that a distance between the current conductors in the width direction is given, it is also ensured that the contour of a current collector can never cover a hole in the other current collector. Also may be laid in the through the inner edges of the current-draining channel cable or the like.
• a single bore is provided, which is preferably arranged in the width direction substantially in the middle of the respective current collector.
• two or more holes are provided which are distributed across the width of each current conductor.
• the invention relates to an electric power unit in which a plurality of the electric power cells are stacked in a stacking direction into a cell block and interconnected with each other within the cell block in parallel and / or in series.
• an electric power unit is to be understood as meaning an arrangement which is also capable of delivering electrical energy. In such an electric power unit manifest Advantages of the individual electric power cells, as described above.
• the electrical contact and insulation between opposite Stromableitern corresponding to the proposed interconnection by conductive or non-conductive spacers are prepared, which are arranged in the spaces between current conductors of successive cells, wherein the spacers by one of Switzerlandstäben by aligned Holes of the current conductors run through, applied compressive force is trapped between the current conductors.
• a first terminal pole and a second terminal pole of the electric power unit are provided, wherein the first terminal pole with a
• Pole is in the context of the invention, a contact to understand, which is also contacted from outside the electric power unit, so that an electrical connection can be produced.
• the cells are arranged in the stacking direction with alternating polarity.
• a series connection of the cells by the conductive and non-conductive spacers is particularly easy to implement by these are easily arranged in alternation between successive Stromableitern.
• Parallel circuits are also easy to implement.
• groups of cells within the cell block may be formed and electrically isolated from each other, that of the last cell of a first group and the first cell of a next group, the current conductors of one side of each in the stacking direction opposite current conductors of the previous cell and the next cell are electrically isolated and are electrically tapped.
• the cell block consisting of the several cells is clamped between two pressure plates, wherein the pressure plates are particularly preferably clamped by tie rods.
• the cells can be easily and reliably summarized and fixed.
• connection between a current conductor and a connection pole can be produced particularly easily via the conductive spacer which adjoins the respective current conductor.
• Fig. 1 is a sectional plan view of a battery according to a first embodiment of the invention
• Fig. 2 is a cross-sectional view of the battery of Fig. 1, taken along a line II-II in Fig.
• FIG. 3 is a sectional plan view of a battery according to a second embodiment of the invention, the view corresponding to that in Fig. 1;
• FIG. 4 is a cross-sectional view of a battery according to a third embodiment of the invention, the view being the same as in FIG. 2;
• FIG. and. Fig. 5. is a cross-sectional view of a battery according to a fourth embodiment of the invention, the view corresponding to that in Fig. 2.
• FIGS. 1 A first preferred embodiment of the present invention is shown in FIGS.
• Fig. 1 is a sectional plan view of a battery
• FIG. 2 is a cross-sectional view of the battery 2 of FIG. 1 taken along a line II-II in FIG. 1 (between two memory cells 4) with the lower portion broken away.
• the section in FIG. 1 runs approximately at medium height of current conductors 14.
• the battery 2 has a plurality of memory cells 4. There are a total of eight memory cells 4 (i) to 4 (viii) present.
• the memory cells 4 have a flat, cuboid base body with two extended flat sides or end faces (front and back) and four narrow sides (right, left, top and bottom).
• the memory cells 4 are in each case with their flat front and back sides together and form a stack.
• the whole stack is bordered by a connection pressure plate 6 and a counterpressure plate 8.
• the pressure plates 6, 8 are held together by tie rods 10 with nuts 12. In this way, the block is braced.
• the memory cells 4 are lithium accumulator cells (in the context of this application, accumulators, ie secondary accumulators, are also referred to as batteries).
• the main body of each memory cell 4 accommodates an active part in which an electrochemical reaction takes place for the storage and emission of electrical energy (charging and discharging reaction).
• the inner structure of the active part not shown in detail in the figure, corresponds to a flat, laminated stack of electrochemically active electrode films of two types (cathode and anode), electrically conductive films for collecting and supplying or discharging electrical current to and from the electrochemically active regions, and separator foils for separating the electrochemically active regions of the two types from each other.
• At least one of the types of electrochemically active electrode films comprises lithium or a lithium compound. This structure is well known in the art and need not be further explored here. Reference is made to the state of the art according to Möller / Winter mentioned in the introductory part of the description, the disclosure content of which is fully incorporated by reference in this respect.
• the current conductors 14 communicate with and serve the electrochemically active cathodes and anode regions within the active region In particular, the current collector 14+ forms a positive pole of the cell 4 and the current collector 14- forms a negative terminal of the cell 4.
• the current conductors 14 are made of a good conductor material such as copper or aluminum. To improve the contact, a coating (vapor deposition, plating or the like.) From example. Silver or gold may be provided.
• the current conductors 14 are flat structures whose width corresponds to slightly less than half the width of the cell 4 and whose height is significantly less than their width. They are arranged offset on the top of the cell 4 both in the width direction and in the thickness direction.
• one of the current conductors 14 is offset toward the front long edge and the right narrow edge and the other is the current conductor 14 toward the back long edge and the left narrow edge added.
• the current conductors 14 do not overlap each other in frontal view nor from the side, and their projections are spaced from each other in each of these views.
• the arrangement of the current collector 14 is mirror-symmetrical with respect to each symmetry axis of the top of the cell 4.
• the cells 4 are stacked with alternating polarity of the current conductors 14+, 14-.
• the first cell 4 (i) is arranged in the cell block so that its positive current collector 14+ lies on the left side in the drawing and its negative current collector 14- lies on the right side in the drawing.
• the next cell 4 (ii) is arranged in the reverse pole direction, namely with its positive current conductor 14+ lying on the right side in the drawing and its negative current conductor 14- lying on the left side in the drawing.
• the polar directions of the other cells 4 each alternate further up to the last (eighth) cell 4 (viii).
• a pocket 16 is formed in the terminal pressure plate 6, a pocket 16 is formed.
• the pocket 16 is a recess in which two terminals 18 (18+, 18-) are angordnet.
• the terminals 18 are accessible from the outside and form In particular, the terminal 18+ forms a positive terminal of the battery 2 and forms the terminal 18- a negative terminal of the battery 2. In the pocket 16 also find other components (not shown in detail) for controlling and regulating the battery 2 and 4 places for each cell.
• the cells 4 of the present embodiment are connected together in series.
• a contact sleeve 20 is arranged in the intermediate space between the positive current conductor 14+ of a cell 4 and the negative current conductor 14- of the respective next cell 4.
• an insulating sleeve 22 is in each case arranged in the intermediate space between the negative current conductor 14- of a cell 4 and the positive current conductor 14+ of the respectively next cell 4.
• the lock nuts 26 for the tension rods 24 are non-rotatably, but axially displaceable, mounted in corresponding recesses of the connection pressure plate 6.
• the locknuts 26 are preferably square nuts or hex nuts.
• end contact sleeves 20a, 20b and end insulating sleeves 22a, 22b are disposed on the current conductors 14+, 14- of the first and last cells 4 (i), 4 (viii) in the stacking direction outwardly facing side, which differ in their length from the contact sleeves 20 and the insulating sleeves 22.
• An end contact sleeve 20a, 20b is provided there, where an insulating sleeve 22 is arranged on the other side of the current conductor 14, and an end insulating sleeve 22a, 22b is provided where on the other side of the current conductor 14 a contact sleeve 20 is arranged.
• an end contact sleeve 20a is provided, while between this negative current conductor 14- of the first cell 4 (i) and the positive Current conductor 14+ of the second cell 4 (ii) an insulating sleeve 22 is arranged.
• an end insulating sleeve 22a is provided, while between this positive current conductor 14+ of the first cell 4 (i) and the negative current collector 14- of the second cell 4 (ii) a contact sleeve 20 is arranged.
• an end contact sleeve 20b is provided, while between this positive current conductor 14+ the last cell 4 (viii) and the negative Current arrester 14- of the penultimate cell 4 (vii) an insulating sleeve 22 is arranged.
• an end insulating sleeve 22b is provided, while between this negative current conductor 14- of the last cell 4 (viii) and the positive current collector 14+ of the penultimate cell 4 (vii) a contact sleeve 20 is arranged.
• the clamping compound is supported on the side of the counter-pressure plate 8 at this in the axial direction.
• On the side of the connection pressure plate 6 is no support in the axial direction; Here the force is applied directly through the locknut 26th
• the positive current conductor 14+ of the last cell 4 (viii) is connected to the positive terminal 18+ via a positive pole line 28+, and the negative current conductor 14- of the first cell 4 (i) is connected via a negative pole line 28- the negative terminal 18- connected.
• the Poltechnischen 28 (28+, 28-) are each attached to the corresponding contact sleeve.
• the connection can also be made by a fixed to the respective pole line 28 contact ring or the like, which is threaded between the respective current conductor 14 and the corresponding contact sleeve on the tie rod 10 and clamped with.
• the contact sleeves 20, 20a, 20b are made of a good conductor material.
• the insulating sleeves 22, 22a, 22b are made of an electrically insulating material.
• an insulator material are plastics, rubber, ceramics and the like in question.
• the tension rods 24 are also made of an electrically insulating material such as a plastic or the like, fiber-reinforced, if necessary, to avoid short circuits.
• metal tie rods may also be used, provided there is an insulating coating which prevents any conductive contact with live parts such as current conductors 14 or contact sleeves 20, 20, 20b.
• the pressure plates 6, 8 are preferably made of a plastic.
• the tie rods 10 for producing the stacked composite of the cells 4 may be made of metal or a plastic.
• the tie rods 10 and nuts 12 may also merge into a single, upturned tie rods; The solubility is lost, which may be desirable for security reasons.
• the current conductors 14 have a bore (unspecified) approximately in the middle of their area. It is also possible to move the bore (and thus the position of the tension rods 24) further outwards or inwards, or to provide a plurality of bores (and several rows of sleeves and tie rods per side of the battery 2).
• the bore patterns of the two current conductors 14+, 14- of a cell 4 are mirror-symmetrical, so that the holes of successive current conductors 14 are aligned when the pole direction in the cell stack changes. (Ignored notches or holes in the Abieiter, the It is also advantageous to have no hole in one of the current conductors due to the outline of the other Current conductor is covered.
• the current conductors should have a distance in their projection on the frontal plane, so that the positive pole line 28+ can be guided in between. If the current conductors 14+, 14- of a cell 4 cover from the front side, in addition to the bores for receiving the tension rods 24, further holes or openings may be provided in the current conductors 14, which are aligned with each other and through which the positive pole line 28- can be performed.
• the pole lines 28 may be isolated independently to avoid short circuits.
• a battery 2 was formed by eight memory cells 4 connected in series. It is understood that the number of cells 4 in the battery and their interconnection may take any meaningful configuration due to battery voltage and capacity requirements.
• a battery 102 is shown as a second preferred embodiment of the present invention. The illustration corresponds to the top view of FIG. 1 cut at the height of the tie rods 10 and tie rods 24. The battery 102 differs from the battery 2 of the first embodiment only in the following aspects.
• the structure of the battery 102 includes memory cells 4, pressure plates 6, 8, tie rods 10, nuts 12, current conductors 14 (14+, 14-) of each cell 4, terminals 18 (18+, 18-), (end) contact sleeves 20, 20a, 20b, (end) insulating sleeves 22, 22a, 22b, tension rods 24, locknuts 26, pole leads 28 (28+, 28-), etc., and the mounting position of the cells 4 with alternating polarity except for the exception described below identical to the first embodiment.
• the battery 102 not all the memory cells 4 are connected in series; Rather, a parallel connection of two groups of four memory cells 4 is realized.
• the contact sleeve 20 of the first embodiment is replaced by the positive current conductor 14+ of the fourth cell 4 (iv) and the negative current conductor 14- of the fifth cell 4 (v) by an intermediate contact sleeve 120c and an intermediate insulating sleeve 122c, each approximately half the length of the distance between the current conductors 14+, 14-, with the intermediate contact sleeve 120c contacting the positive current conductor 14+ of the fourth cell 4 (iv).
• the insulating sleeve 22 of the first embodiment is replaced by the negative current conductor 14- of the fifth cell 4 (v) and the positive current conductor 14+ of the sixth cell 4 (vi) by an intermediate contact sleeve 120c and an intermediate insulating sleeve 122c, wherein the intermediate contact sleeve 120c contacts the negative current collector 14- of the fifth cell 4 (v). From the intermediate contact sleeve 120c at the positive current collector 14+ of the fourth cell 4 (iv), a positive branch line 130+ is discharged, which opens in the positive pole line 28+.
• a negative branch line 130- goes off, which opens in the negative pole line 28-.
• the first four memory cells 4 (i) to 4 (iv) of the battery 102 of this embodiment form a first series circuit whose pole voltage is tapped by the negative pole line 28 and the positive branch line 130+.
• the last four memory cells 4 (v) to 4 (viii) of the battery 102 of this embodiment form a second series circuit whose pole voltage is tapped by the negative branch line 130 and the positive pole line 28+.
• the battery 102 of the present embodiment provides half the pole voltage and twice the capacity.
• the length of the intermediate contact sleeves 20c and the intermediate insulating sleeves 22c in the present embodiment is about half of the distance between the current conductors 14. In a modification of this embodiment, the length of the intermediate insulating sleeves 22c can be almost the distance between the current conductors 14, while the intermediate contact sleeves 20c are shortened to contact discs or contact rings.
• a battery 202 is shown as a third preferred embodiment of the present invention.
• the representation corresponds to the sectional view of Fig. 2.
• the battery 202 differs from the battery 2 of the first embodiment only by the following aspects. More specifically, regarding the structure of the battery 202, the description and illustration of the battery 2 of the first embodiment with memory cells 4, pressure plates 6, 8, tie rods 10, nuts 12, current conductors 14 (14+, 14-) of each cell 4, terminals 18 (FIG. 18+, 18-), tension rods 24, locknuts 26, pole leads 28 (28+, 28-), and installation position of the cells 4 with alternate polarity direction.
• the contact sleeves 20 are replaced by contact shoes 220 of rectangular cross-section and the insulating sleeves 22 are replaced by insulating shoes 222 of rectangular cross-section.
• the cross-sectional area of the contact shoes 220 and the insulating shoes 222 is slightly smaller than the area of the current collector 14.
• the pressure exerted by the tension rods 24 can be distributed more uniformly, and the resistance of the contact elements 220 decreases with the larger cross section.
• a battery 302 is shown as a fourth preferred embodiment of the present invention.
• the illustration corresponds to the sectional view of FIG. 2.
• the battery 302 differs from the battery 2 of the first embodiment only in the following aspects. Specifically, regarding the structure of the battery 302, the description and illustration of the battery 2 of the first embodiment with memory cells 4, pressure plates 6, 8, tie rods 10, nuts 12, current conductors 14 (14+, 14-) of each cell 4, terminals 18 (FIG. 18+, 18-), tension rods 24, locknuts 26, pole leads 28 (28+, 28-), and installation position of the cells 4 with alternate polarity direction.
• the contact sleeves 20 are replaced by contact bridges 320 of rectangular cross section and the insulating sleeves 22 are replaced by insulating bridges 322 of rectangular cross section.
• the width of the contact bridges 320 and the Isolier Portugaln 322 is slightly smaller than the width of the current collector 14.
• the height of the contact bridges 320 and the Isoliermaschinen 322 is greater than the height of the current collector 14.
• the contact bridges 320 of the Isoliermaschinen 322 have no bore, but one after bottom open cut 320a and 322a, which is wider than the pull rod 24 and extends beyond the highest distance of the tension rods 24 from the top of the cell 4.
• the pressure exerted by the tension rods 24 can be distributed more uniformly, and the resistance of the contact elements 320 decreases with the larger cross section.
• the contact bridges 320, 322 are not on the tension rods 24 threaded. They can therefore be mounted, removed and replaced by merely releasing the tie rods 24, without the need for a complete disassembly of the tension rods 24 and re-threading the current conductor and the contact and insulating elements would be required.
• the height of the contact and insulating bridges 320, 322 may be less than shown, so that approximately the upper edge of the pressure plate 6 is not surmounted.
• the memory cells 4 each having alternating polarity are installed in the battery pack.
• the polar direction of the cells does not change after each cell, but that pairs or larger groups of successive cells 4, each having the same polar direction, are incorporated.
• the pairs or groups may then each form parallel circuits, and successive pairs or groups may be connected in series. For this purpose, within a pair or a group, the current conductors of the same polarity, which are consecutive on the same side, are electrically connected by contact elements (contact sleeves, shoes or bridges).
• a contact element is inserted on one side and an insulating element on the other side. If a cell block of particularly high capacity is desired and if the cell voltage of a single cell is sufficient, all cells in the block can also be arranged with the same polar direction and the current conductors on each side can be connected to one another by contact elements.
• tie rods 10 may extend at a different height than the tie rods 24. Although not shown in detail in the figures, tie rods 10 may also be provided in the lower region of the batteries 2, 102, 202, 302.
• the invention has been described by means of preferred embodiments and some modifications thereof. It is understood that the specific embodiments illustrate and exemplify the claimed invention, but do not limit it. The invention itself is defined and limited solely by the most general understanding of the patent claims. It is also understood that the features of various embodiments and / or modifications can be combined and / or exchanged to take advantage of the respective advantages.
• a prismatic electric power cell has two area-shaped current conductors, which protrude from one of the outer surfaces of the cell substantially at right angles and are arranged substantially parallel to each other surface.
• the current conductors each have at least one bore in the direction of their surface normals, wherein the bore pattern of one current conductor is mirror-symmetrical to the bore pattern of the other current conductor.
• the invention also relates to an electric power unit comprising a plurality of the electric power cells.
• the memory cells 4 are electric energy cells in the sense of the invention; and the batteries 2, 102, 202, 302 are electric power units in the sense of the invention.
• the stack of cells 4 is a cell block in the sense of the invention.
• the connection terminals 18+, 18- are connection poles in the sense of the invention. Plus and minus are polarities in the sense of the invention.
• the contact sleeves 20, 20a, 20b, 20c, the contact shoes 220 and the contact bridges 320 are conductive spacers according to the invention, and the insulating sleeves 22, 22a, 22b, 22c, the insulating shoes 222 and the insulating bridges 322 are insulating spacers in the sense the invention. List of reference numbers:

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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)
• Connection Of Batteries Or Terminals (AREA)
• Battery Mounting, Suspending (AREA)

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• 2009
  • 2009-11-09 DE DE102009052480A patent/DE102009052480A1/de not_active Withdrawn
• 2010
  • 2010-11-09 CN CN2010800507321A patent/CN102598353A/zh active Pending
  • 2010-11-09 WO PCT/EP2010/006824 patent/WO2011054544A1/de not_active Ceased
  • 2010-11-09 JP JP2012537326A patent/JP2013510395A/ja active Pending
  • 2010-11-09 BR BR112012010981A patent/BR112012010981A2/pt not_active IP Right Cessation
  • 2010-11-09 EP EP10776592A patent/EP2499684A1/de not_active Withdrawn
  • 2010-11-09 KR KR1020127014941A patent/KR20120105467A/ko not_active Withdrawn
  • 2010-11-09 US US13/508,670 patent/US20120301775A1/en not_active Abandoned

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