EP3513446A1 - Dispositif d'interconnexion électrique d'éléments de batterie, et batterie d'accumulateurs pourvue d'un tel dispositif - Google Patents
Dispositif d'interconnexion électrique d'éléments de batterie, et batterie d'accumulateurs pourvue d'un tel dispositifInfo
- Publication number
- EP3513446A1 EP3513446A1 EP17771799.8A EP17771799A EP3513446A1 EP 3513446 A1 EP3513446 A1 EP 3513446A1 EP 17771799 A EP17771799 A EP 17771799A EP 3513446 A1 EP3513446 A1 EP 3513446A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- battery
- connection plane
- magnet
- contact
- ribbon
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/02—Permanent magnets [PM]
- H01F7/0231—Magnetic circuits with PM for power or force generation
- H01F7/0252—PM holding devices
-
- 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
- H01M50/521—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the material
- H01M50/522—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
- H01M50/50—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
- H01M50/517—Methods for interconnecting adjacent batteries or cells by fixing means, e.g. screws, rivets or bolts
-
- 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 interconnecting battery cells and a battery equipped with such a device.
- the battery cells are accumulators of electrical energy placed in series and / or in parallel for the formation of a storage battery.
- the series and / or parallel of the battery elements makes it possible to supply electrical energy with a voltage and a current adapted to an electrical equipment for which the battery is intended.
- the interconnection of the battery elements also allows their concomitant charging in electrical energy.
- the present invention finds applications for the power supply of electrical equipment or electroportatff tools. Elfe also finds applications for the power supply of light vehicles, such as electric lawn mowers or for road vehicles, for example. In general, the invention finds applications for any battery using juxtapose battery elements and in particular cylindrical cells.
- the batteries may comprise standard battery elements, generally in the form of cylinders, juxtaposed and electrically connected by means of interconnecting electrical conductors.
- standard element shapes exist such as, for example, prismatic shapes that can also be used in battery assembly.
- the quality of the electrical contacts between the battery cells and the interconnection conductors is not a critical parameter when the battery must deliver only small currents, for example, a few amps.
- a very weak current dissipates a negligible power in the contact even with a relatively high contact resistance.
- this power being proportional to the square of the current flowing through the contact, it is understood that it is quickly very important for strong currents.
- the energy lost by high resistance contacts then becomes significant. It also increases with the number of contacts existing within the battery, and because of the two terminals, positive and negative, each battery element.
- known batteries consisting of 12 lithium-ion elements in series and 8 elements in parallel, or 96 battery elements totai, delivering, at a nominal voltage of 44 volts, a total current that can be greater than 45 amps, or so greater than 5.6 amperes at each battery cell contact in operation, for a power of 2000 Watts.
- Particularly reduced contact resistance can be achieved by spot welding the interconnect conductor directly to the terminals of the battery cells.
- a spot weld has, in fact, a particularly weak contact resistance, generally between 0.08 and 0.13 milli-ohms.
- batteries with soldered battery elements have a high cost of dismantling at the end of their life, because of difficulties in separating soldered battery cells.
- a combination of conductive copper or aluminum tracks and mild steel container battery element poses compatibility problems for making welds. Better compatibility is obtained with steel or nickel tracks but at the cost of a prohibitive electrical resistivity. Improved shock and vibration immunity is achieved by replacing the solder contact between the interconnecting conductors and the terminals of the battery cells by a pressure contact.
- Document FR 2 920 913 shows a battery in which interconnection strips have contact zones held against the terminals of the battery elements by elastic pressure means. This is, for example, flexible tabs that press the contact areas against the battery cells.
- the contact resistance between the interconnect strips and the battery cells in this case depends on the amount of pressure exerted on these parts to keep them in contact.
- the present invention aims to provide a reliable device for electrical interconnection of battery elements not having the limitations of known connection devices.
- Another object is to provide an electrical interconnection device with a low contact resistance between contact areas and battery cells to be connected.
- One goal is still to propose an electrical interconnection device adapted to high power batteries, for example batteries capable of delivering a power of 2000 or 3000 watts.
- Another object of the invention is to propose such an interconnection device involving only a limited increase in the weight of the battery.
- an aim is to propose an interconnection device having a lower manufacturing cost than known devices, and in particular, a lower manufacturing cost than a solder interconnection.
- the invention proposes a device for the electrical interconnection of battery cells comprising at least one electrical conductor strip with at least one contact zone for a battery cell, and at least one permanent magnet associated with it. contact area and configured for application of the contact area on a terminal of a battery cell by magnetic interaction with the battery cell.
- the zone of contact of the ribbon has a ribbon embossing relief, the embossing relief forming a receptacle for a magnet,
- the magnet is housed in said magnet receptacle
- Such an interconnection device is intended for battery elements with terminals of a material having ferromagnetic properties, or terminals associated with a ferromagnetic material, that is to say a material on which the magnet can exert an attractive force.
- the embossing relief forms a receptacle for the magnet when it matches the shape of at least a portion of the magnet, so as to achieve, with this part, a junction by complementarity of form or a junction by friction, ents.
- the Interconnection device may comprise a plurality of conductive ribbons and each ribbon may comprise a plurality of contact zones.
- a total number of contact zones corresponding to the number of terminals of the battery elements can be
- the contact zone of the invention Due to the configuration of the contact zone of the invention, it is possible to reduce or even cancel an airgap distance between the magnet and the battery element against which the magnet applied the contact zone. It is thus possible to use contact areas and small magnets by limiting the weight of these magnets, and ensuring satisfactory electrical contact.
- the use of a magnet to maintain the contact areas confers the terminals of the battery elements ensures a reliable electrical contact, insensitive to shock and vibration. Indeed, such contacts allow a relative freedom of movement of the elements relative to each other depending on the stresses of the battery while maintaining contact at the contact areas.
- each contact zone may comprise an opening surrounded by an electrical contact surface.
- the opening may be, for example, in the form of a simple hole, made in the conductive strip in the middle of the contact zone This hole may be formed at the time of embossing the relief, by one end of the punch crossing the conductive ribbon.
- the opening of the contact zone makes it possible to provide a contact with multiple points. It is considered that the contact is multiple-pointed when the terminal surface of a battery element, which generally has a certain convexity, comes into contact with the contact area not at a single point but at a plurality of points, for example a crown of points surrounding the a journeyage. It results in a lower electrical contact resistance
- the device may further comprise, for each contact zone, a magnetic flux guide associated with the permanent magnet.
- the magnetic flux guide without considerably increasing the weight of the interconnection device enables to channel the magnetic flux lines of the magnet and to strengthen its action on the battery elements. A better support of the contact areas on the battery cells is thus obtained, as well as a lower electrical contact reslstanos. Smaller and lighter magnets can also be implemented.
- the interconnection device may further comprise, for each contact zone, a crimping armature of the magnet on the embossing relief.
- the crimping armature is preferably arranged around the magnet receptacle that constitutes the embossing relief.
- the crimping frame thus ensures a good maintenance of the magnet in its housing and therefore a good electrical contact, in deprt shock or vibration that could suffer the electric battery.
- the crimping armature may constitute the magnetic flux guide. This feature makes it possible to simplify crimping and to simplify the interconnection device.
- the magnet may have a cylindrical shape
- the crimping armature may be a ring coaxial with the magnet and surrounding the magnet. More specifically, a portion of the ribbon which forms the receptacle for the magnet may be interposed between the crimp armature and the magnet for crimping the magnet in its receptacle.
- the crimp reinforcement in particular when it forms a magnetic flux guide, may also be in the form of a capsule or a "pot" covering one of the poles of the permanent magnet. realization makes it possible to further strengthen the action of the magnet.
- the contact zone may be configured to extend substantially along a connection plane and at least one of the magnet and the magnetic flux guide may be arranged to flush with the connection plane.
- This configuration has the particularity of canceling the air gap between the magnet or the magnetic fiow guide, and the terminal of the battery element on which the contact zone is applied.
- the reduction, or even the cancellation of the gap makes it possible to maximize the attraction forces of the magnet and to increase the contact pressure exerted by the magnet II in response to a lower electrical contact resistance and a possibility to use smaller and lighter magnets.
- the magnetic flux guide may preferably be one of a soft iron guide and a magnetic guide. If it is a magnetic guide, its action is combined with that of the magnet, while reinforcing the island of Calmant
- the conductor ribbon of the interconnection device of the invention needs to have no elastic property, nor any spring effect, to apply the contact areas on the battery cells.
- the application is simply due to magnetic forces.
- the electrical conductive strip may comprise a copper strip or be constituted by a thin and light copper strip.
- the ribbon can be made of a material having weak magnetic characteristics and especially a very low resistivity so as to limit the energy losses both at the contact zones and also in the connector ribbon. can thus be made in metallic materials such as silver, aluminum, gold, or other non-magnetic substrates of greater resistivity, such as nickel or brass, corn preferentially coated with gold, aluminum, gold or silver, copper or aluminum.
- Copper has the particularity of excellent electrical conductivity.
- the conductive ribbon can be thin while maintaining a low electrical resistance.
- the electrical conductor strip may have, for example, a thickness of between 50 and 200 microns. The fineness of the ribbon also makes it easily deformable and ductile to accompany the contacting of the contact zone with a terminal of a battery element without exerting a restoring force likely to oppose the action of the magnet.
- the electrically conductive ribbon may still have a silver plating.
- the silver plating may have a thickness of the order of 2 micrometers, for example.
- the electrical conductor tape may have an elongated strip shape with a plurality of transverse appendages and substantially copanar, each appendix being provided with a contact zone.
- Such a conformation of the ribbon proves particularly suitable for battery elements arranged according to a regular matrix.
- the invention also relates to an electric storage battery comprising a plurality of battery cells having connection terminals and at least one interconnection device, as described above, interconnecting terminals of the battery cells. .
- the battery may comprise at least one connection plane, each element of the battery having a terminal located in the connection plane.
- the electrical interconnection device between them terminals of several battery elements located in the connection plane.
- the battery elements are in the form of bars each end of which forms an electrical terminal
- the battery can have two connection planes in which are located respectively the opposite electrical terminals of each battery element.
- the battery elements may be cylindrical elements extending perpendicularly to the connection planes.
- the battery may further comprise at least one electrical isolator having cutouts associated with terminals of the battery cells. In that case,
- the electrical interconnection device may have an electrically conductive ribbon extending substantially along a ribbon plane, the ribbon plane being substantially parallel to the connection plane,
- the interconnection device may have a plurality of contact zones, the contact areas protruding on the ribbon plane towards the connection plane,
- At least one of the embossing relief, a magnet housed in a receptacle formed by the embossing relief, and a magnetic flux guide associated with the magnet may come m contact with a terminal of a battery element in the connection plane, respectively extend fun through perforations of the electrical insulator.
- connection plane and the plane of the electrically conductive ribbon forming the interconnection device are shifted by a distance equal to or slightly greater than the thickness of the electrical insulator.
- the insulator may comprise an electrically insulating matérlau plate, the electrically insulating matérlau plate extending between the mban plane and the connection plane, it may in particular be in the form of a plate of plastic material the perforations are adapted to the shapes and dimensions of the embossing reliefs of the contact zones or of the magnetic flux guides of which the contact zones are provided
- each battery element may have, as mentioned above, a first terminal located in the first connection plane and a second terminal located in the second connection plane.
- at least one electrical interconnection device may be associated with each of the first connection plane and the second connection plane, each interconnection device mutually relaying terminals of several battery elements located in the foreground. connection, respectively in the second plane
- Figure 1 is a very simplified illustration of an electric battery part according to the invention and using an interconnection device according to the invention.
- Figure 2 is a section of a portion of an Interconnection device according to the invention.
- Figure 3 is a schematic section of a portion of an interconnect device of the invention and constituting an alternative embodiment.
- Figure 4 is a schematic section of a portion of an interconnection device "informs to Plnvention and constituting another varlante embodiment.
- FIG. 5 is a schematic section of part of an interconnection device according to the invention and constituting yet another variant embodiment,
- FIG. 6 is perspective of an interconnection device according to the invention.
- FIG. 7 is an exploded view showing an electric battery according to the invention and using interconnection devices comparable to that of FIG. 6.
- FIG. 1 shows a storage battery 10 comprising two battery cells 12. If, for example, they are lithium-ion battery elements in standard 18650 format, the battery cells are in the form of cylinders whose ends form respectively a positive terminal 14+ and a negative terminal 14-. The battery cells 12 are juxtaposed and the positive and negative terminals 14+ and 14- of each battery element are respectively arranged in a first and a second connection plane 16a, 18b.
- FIG. 1 also shows an interconnection device 20 extending in the first connection plane 16a and interconnecting the positive and negative terminals 14+ and 14- of the two battery cells 12.
- the interconnection device comprises an electrically conductive strip 22 provided with two contact zones 30.
- the contact areas are in electrical contact with the positive and negative terminals 14+ and 14- of the battery elements in the first connection plane 16a.
- the oorttact zone disk is provided with a permanent magnet 32 which provides the mechanical contact of the corresponding contact zone 30 with a terminal of a battery cell.
- the magnet 32 exerts magnetic attraction forces on the terminals 14+, 14-, generally comprising a material attracted by the magnet, to ensure the maintenance of the electrical contact between the terminal of the element and the associated contact zone .
- the section of FIG. 2 shows a possibility of producing a contact zone 30 of an interconnection device 20.
- This section is produced here at the positive terminal 14+ of a battery element 12, in a longitudinal plane of the element comprising the axis of the magnet 32.
- the section would however similar at the terminal 14- of the element 12.
- the electrical conductive strip 22 has a relief of The embossing relief forms here a bowl 42 and constitutes a receptacle for the magnet 32.
- the embossing relief is formed by stamping or embossing a copper foil forming the conductive strip 22.
- the magnet has a cylindrical shape, and the bowl 42 of the embossing reiief 34 has a depth sufficient to fully receive the magnet 32.
- the electrical contact with the terminal 14+ of the battery element 12, partially shown, is formed by a portion of the contact zone 30 corresponding to the bottom of the bowl forming the stamping point 34. This part of the contact constitutes an electrical contact surface.
- the magnet 32 is held in its housing by a crimping frame 36 in the form of a mild steel ring. More specifically, the ring is, in the exemplary embodiment illustrated, both the crimp armature and a magnetic flux guide.
- the ring of mild steel perniet indeed to press the side walls of the housing formed by the reiief stamping 34 against the magnet 32. It also allows to guide the magnetic flux lines of the magnet from a face opposite to the battery element to the battery cell.
- the crimp frame which forms a magnetic fiow guide, coexists with the magnet 32 and surrounds the magnet.
- the crimp armature 38 has no magnetic flux guide function it can also be made of plastic or aluminum.
- the crimping armature 36 can also be made of a magnetic material and itself constitute a magnet which participates in the action of the magnet 32 housed in the embossing relief 34,
- the battery element 12 comprises an insulating sheath 13 of small thickness, whose role is to avoid short circuits between the positive pole and the container of the battery element generally constituting the negative pole.
- an air gap between the magnetic flux guide and the terminal 14+ of the battery element may be zero when the contact zone 30 is applied against the terminal 14+. It reduces the air gap of the magnet which is located at a distance from the terminal 14+, being separated from this terminal by the conductive strip 22, and thus improves the contact force between the magnet 32 and the terminal 14+, and therefore the contact between the connector ribbon 22 and the terminal 14+ in the connection plane 16a.
- the electrical conductive tape 22 is a copper ribbon, for example copper C11000, of a thickness of 0.1 mm, coated with a silver layer with a thickness of 2 microns.
- the magnet is a nickel-plated NdFeB magnet which is housed in a bowl 42 with a 5 mm diameter and a depth of 2 mm.
- the crimp armature is an S235 steel ring nickel plated with an outer diameter of 6.2 mm and a thickness of 2 mm.
- An embodiment of the contact zone according to Figure 2 is adapted in particular to the mtm in contact with a flat contact surface of the contact area, with a terminal of a battery element also flat.
- the area of an electrical contact surface between the contacting mm of the interconnection device and the terminal of the battery may, however, be limited when the surface of the terminal 14 +, 14- of the battery element 12 has a slightly domed and convex shape.
- the contact may indeed be limited to a point of tangency of the connection plane 16a, 16b, with the apex of the terminal 14+, 14- of the battery element 12.
- Figure 3 is here schematically.
- the contact zone 30 of FIG. 3 is similar to that of FIG. 1, except that the contact zone surrounds an openwork 38 formed at the bottom of the bowl 42 of the embossing topping 34.
- the openwork 38 is preferably a circular hole, centered preferably at the bottom of the bowl 42, made by punching and concomitantly with the realization of embossing relief.
- the presence of the opening allows an annular distribution of the contact surface in the contact area 30, including when the terminal 14+, 14- of the battery element is slightly curved.
- FIG 4 also made schematically, shows yet another possibility of producing a contact zone 30 according to the invention.
- the electrical conductive strip 22 of the interconnection device has a stamping relief 34 in the form of a small sleeve 44 defining a circular slot for the reception of the magnet 32.
- the sleeve 44 is formed in one piece with the electrical conductor strip 22. It stands perpendicularly to the connection plane 16a, 18b, opposite the contact zone 30, that is to say on a face of the electrically conductive ribbon 22 opposite the ribbon face coming into contact with a terminal 14+, 14- of the battery element 12.
- the crimping of the magnet 32 takes place by means of a crimp reinforcement 36 in the form of a soft iron ring which goes around the sleeve 44 and which presses the sleeve on the magnet 32, the ring of soft iron, as for the embodiments of the previous figures, also serves as a magnetic flux guide.
- the contact between the interconnection device 20 and a terminal 14+, 14- of the battery element 12 is by an annular contact surface of the contact zone 30 which surrounds the magnet
- the magnet 32 is flush with the connection plane 16a, 16b defined by the contact surface of the contact zone 30.
- This characteristic is particularly advantageous insofar as an air gap, that is, say a spacing between the magnet and the contact terminal of the battery element can be very small or even damaged. it results in an improved efficiency of the magnet and a greater attraction force applying the contact zone 30 against the element of
- the gap between the magnet 32 and a terminal 14+, 14- of the battery element 12, in the embodiments of FIGS. 2 and 3, is equal to the thickness of the electrical conductor ribbon 22.
- FIG. 4 makes it possible to position the magnet 32 either flush with a connection plane 16a, 18b of the contact zone 30 or with very slight withdrawal from the connection plane. A gap of zero or less than 0.1 mm can be obtained.
- FIG. 5 also made in a schematic manner, shows yet another possibility of producing a contact zone 30. It constitutes a simple variant of that of FIG. 4.
- the embossing relief 34 of the contact zone of FIG. 5 is identical to that of the contact zone of FIG. 4.
- the crimping reinforcement 36 is not a ring but a crimping pot or capsule that comes to capant hungry 32. In the example described, it is a soft iron capsule.
- the realization of a crimping frame mm in the form of a capeule or a pot makes it possible to better channel the magnetic flux lines of the magnet towards the battery element when the crimping armature 36 is used as a magnet. magnetic flux guide.
- the use of a crimping reinforcement in the form of a capsule of a given depth makes it possible to finely adjust the position of the magnet 32 with respect to the connection plane 16a, 16b, iora of the
- the magnet has a face flush with the connection plane 18a, 16b.
- Figure 8 shows an interconnection device 20 according to the invention and provided for a plurality of battery cells.
- the device of FIG. 6 comprises an electrically conductive strip 22 in the form of an elongated central strip 50 extending along a main axis 62 and provided with a plurality of appendices 54.
- the appendices 54 extending radially on either side of the central strip 50, and perpendicular to the main axis 52.
- Each appendix 54 is provided at its end with a contact zone 30 provided with a magnet 32.
- the configuration of the contact zones corresponds to for example, in FIG. 2 or 3.
- FIG. 7 shows, in the form of an exploded view, a storage battery 10 according to the invention comprising a plurality of interconnection devices 20.
- the storage battery 10 of FIG. 7 also comprises a plurality battery cells 12 arranged here according to a regular matrix of 10 lines and 12 coionnes.
- the individual battery cells 12 are cylindrical in shape and have terminals 14+, 14 at their ends.
- the terminals of the opposite ends of the battery cells define two connection planes 16a, 16b.
- the battery elements 12 are alternately mounted with their positive terminal 14+ in the first connection plane 16a, respectively in the second connection plane 16b, then with their negative terminal 14- in the first connection plane 16a, respectively in the second connection plane 16b.
- the successive battery elements are two to two mounted head to tail.
- all batteries say the same column have a terminal of same polarity in the first connection plane 18a, respectively in the second connection plane 18b.
- Interconnection devices 20 are provided for interconnecting 14 +, 14- terminals of battery cells 12 in each connection plane 16a, 16b.
- the devices comparable to FIG. 8, have main axes 52 which are aligned with the columns of battery elements.
- the contact zones 30 of the interconnection devices 20 here have cutouts 38 identical to those of FIG. 3, so as to favor an annular contact.
- Each interconnection device 20 is provided for parallel connection of the battery cells of the same column and for serially connecting the battery cells of two consecutive columns.
- the same interconnection device 20 interconnects all the positive terminals 14 + of the battery cells of a column of battery cells and connects all the negative terminals 14 to the elements of the battery. battery of the adjacent column.
- the device also connects the positive terminals 14+ of the battery cells of a column, to the negative terminals 14- battery cells of the adjacent column.
- Special interconnection devices 20 are mounted on the end columns 1 and 12. They constitute the terminal interconnection devices of the battery which will then be connected to the positive and negative terminals of the battery.
- the interconnection devices comprise electrical conductor strips 22 extending in ribbon planes, not referenced, and parallel to the connection planes 18a, 16b.
- Isolators 60a, 60b are respectively assigned between the ribbon planes and the connection planes 16a, 16b.
- the insulators are in the form of plates of an insulating material, for example plastic. They are pierced with a plurality of perforations 62 in the form of transverse holes and dimensioned to receive the embossing relief of the contact zones 30 of the interconnection device, as well as the crimping magnet and reinforcement respectively associated with the contact zones.
- each contact zone 30 of each Interconnection device is associated with an openwork 82 of an insulator 60a, 60b.
- the contact areas 30 extend through the jets 62 to reach the terminals 14+, 14- of the battery cells 12 in the contact planes 16a, 16b.
- Insulators 60a and 60b also have a mechanical function of supporting and maintaining relative elements relative to each other, and with respect to the interconnection devices.
- a number of known battery cells have a negative terminal in the form of an outer metal casing which extends from one end of the cylindrical body from the battery element to the opposite end having the positive terminal of the same battery cell. The two terminals of such a battery element can thus coexist in the same connection plane.
- All of the elements 12 of the battery 10 of FIG. 7 can be housed in a not shown battery case.
- the housing can be designed in a light manner in that it does not have to contain support forces interconnecting devices on hss battery cells.
- the interconnection devices 20 are held in place by the magnetic forces that the magnets 32 of the contact zones 30 exert on the battery elements 12.
- the interlinking devices easily allow relative movements of the battery elements relative to one another, but also small relative movements of sliding between the contact zones and the terminals of the battery cells, while maintaining the contact between the contact zones and the terminals, there is thus no risk of fatigue at the contact and therefore no risk of breaking contact in use of the battery.
- the battery cells thus contribute to maintaining the cohesion of the
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1658489A FR3056022B1 (fr) | 2016-09-13 | 2016-09-13 | Dispositif d'interconnexion electrique d'elements de batterie et batterie d'accumulateurs pourvue d'un tel dispositif |
| PCT/FR2017/052287 WO2018050978A1 (fr) | 2016-09-13 | 2017-08-28 | Dispositif d'interconnexion électrique d'éléments de batterie, et batterie d'accumulateurs pourvue d'un tel dispositif |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3513446A1 true EP3513446A1 (fr) | 2019-07-24 |
Family
ID=58347438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP17771799.8A Pending EP3513446A1 (fr) | 2016-09-13 | 2017-08-28 | Dispositif d'interconnexion électrique d'éléments de batterie, et batterie d'accumulateurs pourvue d'un tel dispositif |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US11387524B2 (fr) |
| EP (1) | EP3513446A1 (fr) |
| JP (1) | JP2019530193A (fr) |
| KR (1) | KR20190049835A (fr) |
| CN (1) | CN109792024B (fr) |
| FR (1) | FR3056022B1 (fr) |
| WO (1) | WO2018050978A1 (fr) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3085797B1 (fr) * | 2018-09-12 | 2021-04-23 | Commissariat Energie Atomique | Borne de sortie d'un accumulateur electrochimique integrant un verrou magnetique pour fixation magnetique avec conduction electrique avec un busbar |
| FR3085798B1 (fr) * | 2018-09-12 | 2021-04-23 | Commissariat Energie Atomique | Adaptateur d'interface integrant au moins un verrou magnetique pour fixation magnetique avec conduction electrique d'un accumulateur electrochimique a un busbar |
| FR3085793B1 (fr) * | 2018-09-12 | 2020-10-09 | Commissariat Energie Atomique | Procede d'assemblage d'un pack-batterie d'accumulateurs electrochimiques a des busbars par verrouillage magnetique |
| FR3085796B1 (fr) * | 2018-09-12 | 2021-02-12 | Commissariat Energie Atomique | Dispositif de connexion/deconnexion magnetique entre un accumulateur electrochimique et des busbars, et de shunt magnetique passif de l'accumulateur apres sa chute par gravite |
| CN112952272A (zh) * | 2019-11-22 | 2021-06-11 | 比亚迪股份有限公司 | 一种电池、电池模组、电池包及电动车 |
| CN111326700A (zh) * | 2019-12-26 | 2020-06-23 | 湖北锂诺新能源科技有限公司 | 模组电芯间电连接结构 |
| CN114200352A (zh) * | 2021-11-02 | 2022-03-18 | 国网河北省电力有限公司邢台供电分公司 | 一种测试装置及接地导通测试系统 |
| USD967759S1 (en) * | 2022-01-05 | 2022-10-25 | Yongsheng Wang | Battery |
| USD964269S1 (en) * | 2022-01-18 | 2022-09-20 | Shenghuan Lin | Battery |
| USD974293S1 (en) * | 2022-01-28 | 2023-01-03 | Qingzhi Li | Power bank for VR device |
| US12594031B2 (en) * | 2022-06-03 | 2026-04-07 | Oura Health Oy | Detachable battery in a wearable ring device |
| FR3138010A1 (fr) * | 2022-07-18 | 2024-01-19 | Psa Automobiles Sa | Système d’alimentation électrique comportant un connecteur électrique à fixation magnétique |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2003222608A1 (en) * | 2002-04-20 | 2003-11-03 | Magtrix Connectors Limited | Electrical connectors |
| JP5284783B2 (ja) * | 2005-06-30 | 2013-09-11 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 電池、及び該電池を衣類に取り付ける方法 |
| KR100760751B1 (ko) * | 2005-12-23 | 2007-09-21 | 삼성에스디아이 주식회사 | 이차전지 |
| WO2007079449A2 (fr) * | 2006-01-03 | 2007-07-12 | Johnson Controls Technology Company | Systeme de batterie |
| FR2920913B1 (fr) * | 2007-09-06 | 2009-11-13 | Pellenc Sa | Batterie constituee d'une pluralite de cellules positionnees et reliees entre elles, sans soudure. |
| EP2441103B2 (fr) * | 2009-06-08 | 2018-09-12 | Auto-Kabel Management GmbH | Connecteur d'éléments de batterie |
| JP5466906B2 (ja) * | 2009-09-18 | 2014-04-09 | パナソニック株式会社 | 電池モジュール |
| US8361646B2 (en) * | 2010-03-15 | 2013-01-29 | Electronvault, Inc. | Modular interconnection system |
| DE102013011692A1 (de) * | 2013-07-12 | 2015-01-29 | Daimler Ag | Energiespeichervorrichtung mit einer Temperiervorrichtung, Verfahren zum Herstellen der Energiespeichervorrichtung |
| CN103762332A (zh) * | 2014-01-28 | 2014-04-30 | 天津先众科技有限公司 | 一种圆柱锂离子电池组及其组合方法 |
| FR3021809B1 (fr) * | 2014-06-03 | 2016-06-24 | Commissariat Energie Atomique | Dispositif de connexion pour batterie |
| CN204070552U (zh) * | 2014-07-22 | 2015-01-07 | 深圳市合元科技有限公司 | 电子烟用供电装置、电子烟及其充电装置 |
| US9147875B1 (en) * | 2014-09-10 | 2015-09-29 | Cellink Corporation | Interconnect for battery packs |
| DE102015002061B4 (de) * | 2015-02-18 | 2023-11-16 | Audi Ag | Elektrische Stromschiene mit Sensoreinheit |
| CN205355136U (zh) * | 2015-12-19 | 2016-06-29 | 浙江天能能源科技有限公司 | 一种用于点焊镍带的定位装置 |
-
2016
- 2016-09-13 FR FR1658489A patent/FR3056022B1/fr active Active
-
2017
- 2017-08-28 EP EP17771799.8A patent/EP3513446A1/fr active Pending
- 2017-08-28 JP JP2019535983A patent/JP2019530193A/ja active Pending
- 2017-08-28 KR KR1020197010391A patent/KR20190049835A/ko not_active Ceased
- 2017-08-28 CN CN201780055987.9A patent/CN109792024B/zh active Active
- 2017-08-28 WO PCT/FR2017/052287 patent/WO2018050978A1/fr not_active Ceased
- 2017-08-28 US US16/317,687 patent/US11387524B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| FR3056022A1 (fr) | 2018-03-16 |
| CN109792024A (zh) | 2019-05-21 |
| US20190198843A1 (en) | 2019-06-27 |
| JP2019530193A (ja) | 2019-10-17 |
| FR3056022B1 (fr) | 2019-10-11 |
| US11387524B2 (en) | 2022-07-12 |
| WO2018050978A1 (fr) | 2018-03-22 |
| CN109792024B (zh) | 2022-08-23 |
| KR20190049835A (ko) | 2019-05-09 |
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