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
  • H01M50/50—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
  • H01M50/516—Methods for interconnecting adjacent batteries or cells by welding, soldering or brazing
• • 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
  • H01M50/50—Current conducting connections for cells or batteries
  • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
• • 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
  • H01M50/528—Fixed electrical connections, i.e. not intended for disconnection
• • 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

• connection member intended to connect electrically, and mechanically in a connection direction, a first terminal of a first accumulator to a second terminal of a second accumulator, the first accumulator and the second accumulator having respectively two faces.
• connection extending along the same plane substantially parallel to the connection direction, the first terminal and the second terminal projecting respectively from one and the other of the two connection faces in a direction of thickness substantially perpendicular to the plane, the connection member comprising a metal body.
• the invention also relates to an assembly comprising the first accumulator, the second accumulator and such a connection member.
• Such an assembly advantageously constitutes a battery.
• connection members usually include aluminum or copper plates directly laser welded to the battery terminals. It is also known to use screwed connection members to press these "busbar" plates onto the terminals in the direction of the thickness of the terminals.
• connection members involve providing a not insignificant space above the terminals of the accumulators. This limits the compactness of the sets of interconnected batteries, and therefore their energy density.
• connection member intended to connect electrically, and mechanically in a connection direction, a side surface of a first terminal of a first accumulator to a side surface of a second terminal d 'a second accumulator, the first accumulator and the second accumulator having respectively two connection faces extending along the same plane substantially parallel to the connection direction, the first terminal and the second terminal projecting respectively from one and from the 'other of the two connection faces in a direction of thickness substantially perpendicular to the plane
• the connection member comprising a metal body comprising, successively in the connection direction, a first wing adapted to be welded to the side surface of the first terminal, a central part, and a second wing adapted to be welded to the side surface of the second terminal, the central part having a "U” or "V" shape when viewed in a first transverse direction, the first transverse direction being parallel to the thickness direction, or perpendicular to the thickness direction and to the connection direction , the first wing and the
• connection device comprises one or more of the following characteristics, taken alone or in any technically possible combination:
• first wing and the second wing respectively define a first contact surface and a second contact surface which are planar and intended to be welded to the side surfaces of the first terminal and of the second terminal;
• connection member further comprises: a first extension fixed to the first wing and extending on the side opposite to the central part with respect to the first wing in the connection direction, the first extension defining a first contact surface complementary substantially perpendicular to the first contact surface and intended to be welded to the first terminal; and a second extension fixed to the second wing and extending on the side opposite to the central part with respect to the second wing in the connection direction, the second extension defining a second complementary contact surface substantially perpendicular to the second contact surface and intended to be soldered onto the second terminal;
• connection member has symmetry with respect to a plane perpendicular to the connection direction
• first wing and the second wing extend parallel to the second transverse direction in a non-mounted position of the connection member;
• the elongated parts of the first wing and of the second wing, on the one hand, and the central part of the body, on the other hand, have, to more or less 10%, the same extension in the second transverse direction;
• Each of the end pieces of the first wing and of the second wing has a chamfer adapted to allow insertion of the connection member between the first terminal and the second terminal in the second transverse direction;
• Each of the first wing and of the second wing, and optionally each of the end pieces, comprises (s) respectively a chamfer adapted to allow insertion of the connection member between the first terminal and the second terminal in the first transverse direction;
• the body is delimited in the first transverse direction by two surfaces substantially perpendicular to the first transverse direction, and formed at least by the central part, the first wing and the second wing;
• connection member further comprises at least one electrically insulating element and adapted to be inserted between the body and the two connection faces.
• Another subject of the invention is an assembly comprising at least a first accumulator, at least a second accumulator, and at least one connection member, the connection member electrically connecting, and mechanically in the connection direction, the lateral surface from the first terminal to the side surface of the second terminal, the first wing being welded to the side surface of the first terminal, and the second wing being welded to the side surface of the second terminal, the connection member being less prominent in the thickness direction that at least one of the first terminal and the second terminal.
• the assembly further comprises electrically insulating elements interposed between the two connection faces and the connection member.
• FIG. 1 is a schematic perspective view constituting a first embodiment of the invention, of an assembly according to the invention, comprising a connection member,
• FIG. 2 is a schematic perspective view of an assembly according to the invention, constituting a first variant of the assembly shown in Figure 1.
• FIG. 3 is a schematic perspective view of an assembly according to the invention, constituting a second variant of the assembly shown in Figure 1.
• - Figure 4 is a perspective view of the connection member shown in Figures 1 to 3.
• FIG. 5 is a perspective view of a connection member constituting a first variant of the connection member shown in Figure 4,
• FIG. 6 is a perspective view of a connection member constituting a second variant of the connection member shown in Figure 4,
• FIG. 7 is a perspective view of a connection member constituting a third variant of the connection member shown in Figure 4,
• FIG. 8 is a perspective view of a connection member constituting a fourth variant of the connection member shown in Figure 4,
• FIG. 9 is a schematic perspective view of an assembly constituting a second embodiment of the invention.
• FIG. 10 is a perspective view of the connection member shown in Figure 9, constituting a fifth variant of the connection member shown in Figure 1,
• FIG. 11 is a schematic, partial, perspective view of an assembly according to the invention, constituting a fourth variant of the assembly shown in Figure 1, and
• FIG. 12 is a perspective view of a connection member constituting a sixth variant of the connection member shown in Figure 4.
• the assembly 10 comprises a first accumulator 12, a second accumulator 14, and a connection member 16 electrically and mechanically connecting in a connection direction C, a lateral surface 18 of a first terminal 20 of the first accumulator to a lateral surface 22 of a second terminal 24 of the second accumulator.
• the assembly 10 is for example intended to be placed in an electric vehicle (not shown), or in space, mobility or energy storage systems, in particular when the compactness of the assembly is an important parameter.
• an electrochemical element comprising, for example, an electrochemical bundle (not shown) comprising an alternation of positive and negative electrodes (not shown) flanking separators impregnated with electrolyte.
• Each electrode is for example composed of a metallic current collector supporting on at least one of its faces the electrochemically active material.
• the electrode is electrically connected to a current output which provides electrical continuity between the electrode and the external application to which the element is associated.
• the electrode bundle is placed in a sealed container.
• the electrochemical element is for example of the Li-ion type.
• the first accumulator 12 is advantageously of prismatic or parallelepiped shape, for example with a rectangular base.
• the base of the prism can have other shapes.
• the first accumulator 12 comprises a casing 25 defining a connection face 26.
• the first accumulator 12 has another terminal 28 similar to the first terminal 20 but with the opposite polarity, and a locating member 30 located near the first terminal 20 and indicating for example a negative polarity of the latter.
• housing 25 is made of plastic. It is therefore electrically insulating.
• connection face 26 extends in a plane P parallel to the connection direction C.
• the connection face 26 has for example the same general shape as the base of the prism of the first accumulator 12, that is to say that 'it is rectangular.
• the first terminal 20 and the other terminal 28 of the first accumulator 12 protrude from the connection face 26 in a direction of thickness E substantially perpendicular to the plane P.
• the direction of thickness E is substantially vertical.
• a first transverse direction T1 of the connection member 16 is defined, the first transverse direction being parallel to the direction of thickness E.
• a second transverse direction T2 is also defined substantially perpendicular to the first direction of thickness E and to the connection direction C.
• the first terminal 20 and the other terminal 28 have, for example, a general parallelepipedal shape and have a square shape with rounded corners in view in the direction of the thickness E.
• the side surfaces 18 and 22 face each other in the connection direction C, and are substantially parallel to each other.
• the other terminal 28 is located opposite the first terminal 20 on the connection face 26 in the first transverse direction T 1.
• the locating member 30 has for example a general parallelepipedal shape and is advantageously adjacent to the terminal 20.
• the locating member 30 comprises an upper face 32 parallel to the connection face 26 and displaying a negative sign indicating the polarity of the first terminal 20.
• the second accumulator 14 is advantageously structurally similar to the first accumulator 12. According to variants not shown, the second accumulator 14 differs from the first accumulator 12 by structural characteristics, in particular of shape, or electrical.
• the second accumulator 14 therefore comprises a housing 33, another terminal 34 located opposite the other terminal 28 of the first accumulator 12, a locating member 36 indicating the negative polarity of the other terminal 34, and a connection face 38 extending in the plane P.
• the second terminal 24 is located opposite the first terminal 20 in connection direction C.
• first accumulator 12 and the second accumulator 14 are connected in series by the connection member 16 and face each other in the connection direction C by two large lateral sides 40, 42.
• an assembly 110 is described constituting a first variant of the assembly 10 shown in Figure 1. Similar elements bear the same reference numerals and will not be described again. Only the differences will be described in detail below.
• the second terminal 124 is the analogue of the other terminal 34 shown in Figure 1.
• the second terminal 124 therefore has a negative polarity indicated by the locator 36.
• the other terminal 134 is the analogue of the first terminal 24 shown in Figure 1.
• the other terminal 134 is therefore of positive polarity.
• the second terminal 124 and the other terminal 134 are respectively opposite the first terminal 20 and the other terminal 28 of the first accumulator 12 in the connection direction C.
• first accumulator 12 and the second accumulator 14 are mounted in parallel as in the second variant shown in FIG. 2, but they respectively face each other by two short sides 240, 242 in the connection direction C.
• the connection member 16 connects a first terminal 220 of the first accumulator 12 to the second terminal 24 of the second accumulator 14.
• the first terminal 220 is the analogue of the second terminal 28 shown in Figure 1.
• the first accumulator 12 also comprises another terminal 228 of negative polarity, as indicated by the locating member 30.
• the other terminal 228 is located on the connection face 26 located opposite the first terminal 220 in the direction of connection C and not in the first transverse direction T 1.
• the other terminal 34 of the second accumulator 14 is located on the connection face 38 opposite the second terminal 24 in the connection direction C, and not in the first transverse direction T 1.
• connection member 16 is placed in a certain direction along the first transverse direction T1. It could, in a variant not shown, be placed in the opposite direction in this direction.
• the locating members 30 and 36 are adjacent to the other terminals 34 and 228 and are located away from the connection member 16, which allows these two positioning modes of the connection member relative to the first terminal 220 and the second terminal 24.
• connection members connecting some of the terminals of these accumulators, in series or in parallel or even in a mixed fashion.
• connection member 16 connecting the first terminals 20, 220 to the second terminals 24, 124 of the sets 10, 110 and 210 shown in Figures 1 to 3.
• connection member 16 is less prominent in the direction of thickness E than the first terminal 20, 220 and the second terminal 24, 124.
• the connection member 16 does not extend above the first terminal 20, 220 and the second terminal 24, 124; in particular, the connection member is not screwed onto the terminals and does not cover them.
• the connector 16 is as prominent in the thickness direction E as either of the first terminal 20, 220 and the second terminal 24, 124.
• connection member 16 has a thickness E1 in the direction of thickness E, the thickness E1 advantageously being between 1 millimeter and 5 millimeters, preferably between 2 millimeters and 4 millimeters, and by example equal to about 3 millimeters.
• the connection member 16 consists of a body 44 made of an electrically conductive material and adapted to be welded by laser to the terminals, for example a metallic material.
• connection member 16 may include other elements, metallic or not, for example to facilitate its handling by the operator (not shown), such as non-slip surfaces.
• the body 44 comprises a first wing 46 adapted to be welded to the lateral surface 18 of the first terminal 24, 224, a central part 48 in the shape of a “U” in view in the first transverse direction. T1, and a second wing 50 adapted to be welded to the lateral surface 22 of the second terminal 24, 124.
• the body 44 also comprises a first extension 52 fixed to the first wing 46 and extending on the side opposite to the central part 48 with respect to the first wing in the connection direction C, and a second extension 54 fixed on the second wing 50 and extending on the side opposite to the central part 48 with respect to the second wing in the connection direction vs.
• connection member 16 has a symmetry with respect to a plane P 'perpendicular to the direction C, with respect to which, the first wing 46 and the first extension 52, of on the one hand, and the second wing 50 and the second extension 54, on the other hand, are symmetrical.
• the body 44 Viewed in the first transverse direction T1, which is also in the example the thickness direction E, the body 44 has a "W" shape ensuring it a certain mechanical elasticity in the connection direction C.
• the body 44 is for example delimited by two surfaces 56, 58 substantially perpendicular to the first transverse direction T1, and formed by the central part 48, the first wing 46 and the second wing 50.
• the body 44 is delimited by a lateral surface 60 substantially parallel to the transverse direction T1 and also formed by the first wing 46, the central part 48 and the second wing 50.
• the body 44 is a straight prism whose surface 58 can be considered as the "W" shaped base.
• the surface 58 can be pressed against the connection faces 26, 38.
• the surface 56 is advantageously substantially at the same level as the top of the first terminal 20, 220 and of the second 24, 124 in the thickness direction E.
• the central part 48 comprises a base 62, a first leg 64 and a second leg 66 extending parallel to the second transverse direction T2.
• the central part 48 is in the shape of a “V” when viewed in the first transverse direction T 1.
• the base 62 is located substantially at the same level as the first extension 52 and the second extension 54 in the second transverse direction T2.
• the base 62 is for example thicker than the extensions in the second transverse direction T2. Base 62 is also thicker in this direction than first leg 64 and second leg 66 are in connection direction C.
• the first leg 64 and the second leg 66 are symmetrical to each other with respect to the plane P ’, and for example parallel to each other.
• the first leg 64 and the second leg 66 advantageously have a constant section perpendicular to the second transverse direction T2, for example rectangle.
• the first wing 46 and the second wing 50 include end caps 68, 70 attached to the first leg 64 and the second leg 66, respectively, and elongated portions 72, 74 extending from the end caps, respectively along the first leg. and from the second leg outside the "U" to the base 62 in the second transverse direction T2.
• the end pieces 68, 70 respectively comprise front faces 76, 78 for example perpendicular to the second transverse direction T2, and chamfers 80, 82 adapted to allow insertion of the connection member 16 between the first terminal 20 and the second terminal 24 in the second transverse direction T2.
• the chamfers 80, 82 flare relative to each other in the second transverse direction T2 towards the base 62.
• the end pieces 68, 70 are advantageously fixed on ends 84, 86 of the first leg 64 and of the second leg 66 opposite to the base 62 in the second transverse direction T2.
• the end pieces 68, 70 are for example thicker in the second transverse direction T2 than are the first leg 64 and the second leg 66 in the connection direction C.
• the elongated parts 72, 74 are for example parallel respectively to the first leg 64 and to the second leg 66 of the central part 48 in an unassembled position of the connection member 16.
• the elongated parts 72, 74 respectively define a first contact surface 88 and a second contact surface 90 planar and intended to be welded edge to edge on the side surfaces 18, 22 of the first terminal 20 and of the second terminal 24.
• the elongated parts 72, 74 advantageously have constant sections perpendicular to the second transverse direction T2, for example rectangular.
• the elongated parts 72, 74, on the one hand, and the central part 48 of the body 44, on the other hand, have, to more or less 10%, the same extension E2 in the second transverse direction T2.
• the elongated parts 72, 74 the first leg 64 and the second leg 66 have sections S advantageously adapted to give the connection member 16 a fuse function.
• the sections of the elongated portions 72, 74, of the first leg 64 and of the second leg 66 are substantially identical to each other.
• first extension 52 and the second extension 54 extend perpendicularly to the elongated portions 72, 74 respectively.
• the first extension 52 and the second extension 54 are parallel to the connection direction C in the unmounted position in the connection member 16.
• first extension 52 and the second extension 54 are attached to ends 92, 94 of the elongated portions 72, 74 opposite the end pieces 68, 70 in the second transverse direction T2.
• the first extension 52 and the second extension 54 respectively define a first complementary contact surface 96 and a second complementary contact surface 98, substantially perpendicular to the first contact surface 88 and to the second contact surface 90.
• the complementary contact surfaces 96 and 98 are adapted to be welded respectively to the first terminal 20 and the second terminal 24.
• first accumulator 12 and the second accumulator 14 are placed in their respective positions shown in Figures 1 to 3.
• connection member 16 is inserted between the first terminal 20, 220 and the second terminal 24, 124 in the second transverse direction T2 in the direction (arrow F1) going from the base 62 of the central part 48 towards the end pieces. 68, 70 of the first wing 46 and of the second wing 50.
• the chamfers 80, 82 facilitate this insertion.
• connection member 16 is in the mounted position shown in Figures 1 to 3, in which the first contact surface 88, the second contact surface 90, the first complementary contact surface 96, and the second complementary contact surface 98 are in contact with the side surfaces of the first terminal 20, 220 and of the second terminal 24, 124.
• the first contact surface 88, the second contact surface 90, the first complementary contact surface 96, and the second complementary contact surface 98 are then secured to the terminals by welding, advantageously using a laser (not shown) according to a technique known per se.
• the elongated parts 72, 74 are respectively away from the first leg 64 and the second leg 66 in the connection direction C.
• the distance E3 between the elongated part 74 and the second leg 66 is constant in the second transverse direction T2, and is advantageously equal to the distance E4 between the first leg 64 and the second leg 66, itself advantageously constant in the second transverse direction T2.
• connection member 16 allows the passage of a current I ( Figure 4) from the first terminal 20, 220 to the second terminal 24, 124 or vice versa, depending on the polarity of the terminals.
• connection member 16 absorbs the variations in distance between the first terminal and the second terminal in the connection direction C, due to the possible heating of the first accumulator 12 and of the second accumulator 14 during their operation.
• connection member 16 ensures an efficient electrical connection between the first terminal and the second terminal without occupying space above the terminals in the direction of thickness E.
• the assemblies 10 , 110, 210 have better compactness and are more energy dense. These assemblies therefore make it possible to deliver more energy for the same occupied volume, compared to existing solutions.
• connection member 16 behaves like a spring. Once fitted, it allows play between the first accumulator 12 and the second accumulator 14 in the connection direction C to compensate for any swelling of the accumulators.
• connection member 16 incorporates a fuse function, depending on the current flow section S that will be defined.
• connection member 16 makes it possible to connect the first accumulator 12 and the second accumulator 14 according to the wishes of the user, in series, in parallel, etc.
• the manufacture of the connector 16 is simple. For example, manufacturing can be done by extruding a bar and cutting it off.
• connection members 116, 216, 316, and 416 respectively constituting a first variant, a second variant, a third variant and a fourth variant of the connection member 16 shown in Figures 1 to 4.
• connection members 116 to 416 are similar to the connection member 16. Similar elements will not be described again. When they bear a numerical reference, this is identical to that used in FIG. 4. Only the differences will be described in detail below.
• connection member 116 the end pieces 68, 70 of the first wing 46 and of the second wing 50 do not include the chamfers 80, 82 adapted to facilitate the insertion of the member of connection 16 according to arrow F1 (FIG. 4).
• the elongated parts 72, 74 comprise chamfers 172, 174 adapted to allow insertion of the connection member 116 between the first terminal 20, 220 and the second terminal 24, 124 in the direction of thickness E, that is to say perpendicular to the plane P and not parallel to the plane P.
• This insertion is represented in FIG. 5 by an arrow F2.
• the end pieces 68, 70, the first extension 52 and the second extension 54 also include chamfers 180, 182, 152, 154 located in the extension of the chamfers 172, 174, to facilitate this insertion.
• Chamfers 172, 174 flare in the first transverse direction T 1 from surface 58 to surface 56.
• the connector 116 is not a prism.
• connection member 116 is shown upside down with respect to Figure 4 in the direction of thickness E.
• the connection member 116 has the surface 58 upwards. in FIG. 5, this surface 58 being intended to be applied against the connection faces 26, 38 of the first accumulator 12 and of the second accumulator 14.
• the connector 116 functions similarly to the connector 16, and has the same advantages.
• connection member 116 can advantageously be carried out by extruding a bar by cutting it, and by machining it.
• connection member 216 differs from the connection member 16 by the shape of the base of the central part 48, which is more rounded, for example of semicircular shape in view of the first transverse direction. T 1.
• the elongated portions 72, 74 do not extend parallel to the first leg 64 and the second leg 66, but form an angle ⁇ with the latter.
• the angle a is between 3 and 10 degrees in the unassembled position figure 6. Once the connection member 216 is inserted between the first terminal and the second terminal, the angle a becomes substantially zero. This initial inclination ensures that the connection member 216, once placed between the first accumulator 12 and the second accumulator 14, is in compression.
• connection member 316 has a central part 48 shorter than that of the connection member 16 in the second transverse direction T2.
• the base 62 of the central part 48 is not located at the level of the ends 92, 94 of the elongated parts 72, 74 of the first wing 46 and the second wing 50, but between the end pieces 68, 70 and the ends 92, 94.
• the central part 48 has an extension between E5 in the second transverse direction T2 of between 40% and 75% of the total length E6 of the connection member 316 in this direction.
• connection member 316 This shortening of the central part 48 allows the elasticity of the connection member 316 to be modulated in the connection direction C.
• connection member 416 does not have the first extension 52 and the second extension 54 shown in Figure 4.
• the ends 92, 94 of the elongated portions 72, 74 of the first wing 46 and of the second wing 50 lie at the same level as the base 62 of the second central portion 48 in the second transverse direction T2.
• the assembly 310 comprises a first accumulator 12 and a second accumulator 14 structurally identical to those shown in FIG. 1, and arranged in the same way.
• the assembly 310 differs in its connection member 516 shown in Figure 10, and which constitutes a fifth variant of the connection member 16 shown in Figure 1.
• the central part 48 has a "U" shape in a first transverse direction T 1 which is not parallel to the thickness E, but which is perpendicular to the thickness direction E and to connection direction C.
• connection member 516 also has a low thickness E1 in the direction of thickness E, which allows it to be less prominent than the first terminal 20 and the second terminal 24 shown in FIG. 9.
• the connection member 516 is also prismatic in the first transverse direction T1, that is to say parallel to the plane P, and not perpendicularly as in the other connection members described above.
• the base 62 of the central part 48 is rounded, and for example semicircular, in view in the first transverse direction T1 as in the connection member 216 shown in Figure 6.
• the end pieces 68, 70 of the first wing 46 and the second wing 50 have chamfers 581, 582 adapted to facilitate the insertion of the connection member 516 between the first terminal 20 and the second terminal 24 according to the thickness direction. E. This insertion is represented by an arrow F3 in figure 10.
• the chamfers 580, 582 are parallel to the transverse direction T1 and widen in the second transverse direction T2 towards the base 62 of the central part 48, as is the case for the chamfers 80, 82 of the member connection 16 shown in Figure 4.
• the first wing 46, the central part 48 and the second wing 50 are much shorter than in the connection member 16, since they extend in the direction of thickness E inside the thickness E1, so that the connection member 516 is not more prominent than the terminals in the thickness direction E.
• first wing 46, the central part 48 and the second wing 50 have a greater extension than that of the member 16 in the first transverse direction T 1.
• connection member 516 does not have the first extension 52 and the second extension 54.
• an assembly 410 is described constituting a variant of the embodiment shown in FIG. 1. Only the differences will be described in detail below.
• the casings 25, 33 of the first accumulator 12 and of the second accumulator 14 are no longer made of plastic, but of an electrically conductive metallic material.
• connection faces 26, 38 and connection member 16 are interposed between the connection faces 26, 38 and the connection member 16 in order to avoid any short circuit.
• the elements 426, 438 are for example integral with the first accumulator 12 and the second accumulator 14, respectively.
• the elements 426, 438 are independent of the accumulators.
• the elements 426, 438 cover all or part of the connection faces 26, 38, in particular in the vicinity of the connection member 16.
• the elements 426, 438 are made of plastic, or are plates similar to those used to manufacture printed circuits.
• electrically insulating elements 426, 438 it is also possible to use electronic cards (PCB, “flex circuit”, SMU, etc.) for measuring one or more state parameters of the electrochemical elements (temperature, voltage. ..).
• connection member 616 constituting a variant of the connection member 16 shown in Figure 4. Only the differences will be described in detail below.
• connection member 616 is more particularly implemented when the housings 25, 33 are made of an electrically conductive metallic material.
• connection member 616 comprises an element 618 electrically insulating and adapted to be inserted between the body 44 and the connection faces 26, 38 in order to avoid any short circuit.
• element 618 is made of plastic, or is a plate similar to those used to make printed circuits.
• electrically insulating elements 618 electronic cards (PCB, "flex circuit", SMU, etc.) for measuring one or more state parameters of the electrochemical elements (temperature, voltage. ).
• Element 618 advantageously covers the entire surface 58 of body 44.

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• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Electrochemistry (AREA)
• General Chemical & Material Sciences (AREA)
• Connection Of Batteries Or Terminals (AREA)
• Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=72709493

Family Applications (1)

Country Status (5)

Family Cites Families (4)

• 2020
  • 2020-06-04 FR FR2005871A patent/FR3111238B1/fr active Active
• 2021
  • 2021-06-04 US US18/008,386 patent/US20230282947A1/en active Pending
  • 2021-06-04 EP EP21728949.5A patent/EP4162564A1/de active Pending
  • 2021-06-04 CN CN202180040098.1A patent/CN115699439A/zh active Pending
  • 2021-06-04 WO PCT/EP2021/065052 patent/WO2021245259A1/fr unknown

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