• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to a portable battery device (1) comprising a housing and a battery pack (3) housed in the latter, and composed of a plurality of battery cells (4). Battery device (1), characterized in that it comprises, compartmental surface means (7, 7 ') of the internal volume of the housing defining sealed housings (8'), in that the ends (4 ', 4 ") ) elements (4) come respectively in support engagement, by or with portions of opposite ends of the bodies (4 '") of the battery cells (4), with the compartment means (7, 7') opposite and in that the remaining parts (11) of the bodies (4 '") of said elements (4) situated between said opposite partitioning means (7, 7') are exposed directly to the external environment through wall portions (6). ) perforated or discontinuous housing.
    公开号:FR3056335A1
    申请号:FR1658791
    申请日:2016-09-20
    公开日:2018-03-23
    发明作者:Roger Pellenc；Frederic Fortier
    申请人:Pellenc SAS；
    IPC主号:
    专利说明:

    DESCRIPTION
    The present invention relates to the field of autonomous electrical power sources, in particular power battery systems which can be transported or even carried by the user (generally on their back), and relates to a portable battery device integrating a passive air cooling system.
    Numerous embodiments of portable batteries (battery pack in English) for powering power tools are already known in the state of the art.
    Such a battery pack is generally composed of an assembly of a plurality of battery cells with elongated sealed bodies, preferably of cylindrical shape, having two opposite ends.
    These elements are, on the one hand, arranged side by side and with an interstitial space between neighboring elements, on the other hand, arranged in a block consisting of a single piece or at least two mutually superimposed or joined sub-blocks and, finally, electrically connected to each other at each of their opposite ends according to a predetermined series / parallel assembly, thus forming two opposite faces of electrical connection, for the block in one piece or for each sub-block.
    In addition, such a battery pack is commonly housed in a box of parallelepiped shape.
    One of the major challenges encountered in these batteries, which can be used in polluting and / or humid environments and with high ambient temperatures, consists in simultaneously and satisfactorily meeting, on the one hand, the cooling requirements necessary due to significant heating of the constituent elements during the charging and discharging phases, in particular at high current, on the other hand, to the requirements of service life and operating safety, in particular of electrical insulation, and of absence of oxidation of the connectors and, finally, the rigidity and mechanical strength requirements necessary for its handling and transport.
    A large part of low-voltage consumer power tools (less than 24 Volts) have battery packs inserted in a completely waterproof case, but the autonomy of these batteries is
    -2 however relatively weak. Thus, even in the event of a strong current, the battery is discharged before its elements reach, given their insulation in the waterproof case, critical temperature thresholds. Indeed, even if the temperature of these elements, due to the thermal power dissipated by them and not dissipated quickly in the ambient air, increases rapidly taking into account the total insulation by the waterproof housing, these elements arrive at the end of discharges before reaching a high temperature and cools down over time, the battery then no longer delivering current. The operating autonomy of such batteries during a high current discharge is generally only a few minutes, and in any case much less than an hour.
    This is not the case for professional applications which require autonomy longer than an hour, sometimes even several hours, and in fact require thermal management of the battery cells when they are used. In the latter case, insulation of the battery cells in a sealed shell for working outdoors does not allow high currents to be delivered, this to avoid an excessive rise in temperature of the battery cells during the operation of the battery.
    Document US 2010/0136413 discloses an embodiment in which a plurality of cylindrical battery cells are mounted between two housing parts, then encapsulated by injection of resin or the like.
    Although this results in a rigid and resistant construction, this solution limits, or even reduces to zero, the cell surfaces exposed to air circulation, requiring the use of forced ventilation in the event of significant heating of the elements. In addition, this conditioning of the battery elements leads to a significant overweight and makes it difficult to dismantle the battery during its recycling.
    The same applies to the constructions emerging from documents WO 2013/139409 and WO 2014/079507, in which the battery blocks are housed in housings with small ventilation openings, requiring accompanied forced air circulation, where appropriate. , thermal radiators arranged around the elements.
    However, the realization of this active cooling function by forced air circulation consumes part of the energy of the battery and consequently reduces its autonomy. In addition, the presence of at least one
    -3 actuator and moving parts lead to regular maintenance, a heavier weight, and these batteries cannot be used in humid atmospheres, even in the rain, without risking significant corrosion or short-circuits at the level of the element contacts of battery.
    Document US 3,219,485 discloses a portable battery pack composed of a small number of rechargeable alkaline accumulators, in which the accumulators are held with wedging between two plates separated by a perforated wall. The electrical connection of the accumulators is carried out, on the one hand, at the level of only one of their ends mounted in a first perforated plate and, on the other hand, on their lateral flanks exposed to the air circulation of the outside. No electrical connection of the terminals of the accumulators embedded in the second non-perforated plate is possible. And finally, given the use of a large number of accumulators, but also their dimensional manufacturing tolerances, it is not possible to obtain a seal between the accumulators and the perforated plates, making it impossible to use of such a battery in rainy weather without risk of corrosion, or even electrical short circuits, at the electrical connections.
    The object of the present invention is to overcome at least the main aforementioned drawbacks by providing a simple, passive, integrated, safe and inexpensive solution, making it possible to effectively cool a battery device of the type mentioned in the introduction, usable in rainy weather, while also ensuring good electrical insulation, rigid construction, good corrosion resistance, limited overweight and facilitating recycling at end of life.
    To this end, the subject of the invention is a battery device of this type, characterized in that it comprises, at each of the connection faces of the battery block in one piece or of each sub-block, surface means for compartmentalizing the internal volume of the housing defining, by cooperation with one of a continuous wall portion of said housing, another means of compartmentalization, and a separate continuous wall, sealed housings, in that at least the zones of electrical connection of the ends of the battery cells open out or are arranged in these sealed housings, in that these sealed housings contain the means of electrical connection of said cells, in that
    -4that the ends of the elements respectively come in support engagement, by or with opposite end portions of the bodies of the battery elements, with the opposite compartmentalization means and in that the remaining parts of the bodies of said elements located between said means opposing compartments are exposed directly to the external environment through perforated or discontinuous wall portions of the housing.
    The invention will be better understood from the following description, which relates to preferred embodiments, given by way of nonlimiting examples, and explained with reference to the appended schematic drawings, in which:
    FIGS. 1 and 2 are perspective views in two different directions of a portable battery device according to a first embodiment of the invention, neither the connection cable (to the load to be supplied or to the charger), nor the carrying harness (preferably removable) not being shown;
    Figure 3 is an exploded perspective view of the battery device shown in Figures 1 and 2;
    Figure 4 is a shematic section in a plane comprising the median planes of a column of battery cells and perpendicular to the direction H of the device shown in Figures 1 and 2, the means of electrical connection of said cells is not represented;
    Figures 4A, 4B, 4C, and 4D are views on a different scale of the details A, B, C and D respectively, shown in Figure 4;
    Figure 5 is a shematic section in a plane comprising the median planes of a line of battery cells and perpendicular to the direction L of the device shown in Figures 1 and 2, the means of electrical connection of said elements not being represented;
    FIGS. 5A, 5B, 5C and 5D are views on a different scale of the details A ', B', C 'and D' respectively, indicated in FIG. 5;
    Figures 6 and 7 are perspective views in two different directions, similar to the views of Figures 1 and 2, of a portable battery device according to a second embodiment of the invention, shown without connection cable or harness of portage;
    Figure 8 is a perspective view of a battery pack (formed of three superimposed sub-blocks) forming part of the device shown in Figures 6 and 7 and housed in the housing of the latter;
    FIG. 9 is an exploded perspective view of the battery device shown in FIGS. 6 and 7;
    FIG. 10A is a diagrammatic elevation view of the partial section along AA of FIG. 8 ', that is to say a section along a plane comprising the axes of the battery elements aligned with two adjacent sub-blocks, the means electrical connection of elements not shown;
    Figure 10B is a perspective view of the section along A-A of Figure 8, the means for electrical connection of the battery cells being shown;
    FIG. 11 is a schematic section of the battery device shown in FIGS. 6 and 7 in a median plane of a battery sub-block, perpendicular to the axis of the battery elements and to the direction H, and, FIG. 12 is a shematic section of the battery device shown in FIGS. 6 and 7 in a median plane of the battery device, perpendicular to the direction L and comprising the axes of battery elements of the three successive sub-blocks.
    Figures 1 to 7, 9, 11 and 12 show a portable battery device 1 comprising a housing 2 generally of substantially parallelepiped shape, having a height H, a width L and a thickness E, and a battery pack 3 which is housed in this box 2,
    The battery pack 3 is made up of a plurality of battery cells 4 with elongate sealed bodies 4 ′, preferably of cylindrical shape, comprising two opposite ends 4 ′ and 4. The battery cells 4 are preferably lithium technology accumulators -Ion in a cylindrical 18650 format. Other technologies of accumulators and other formats, including non-cylindrical, can of course be used in the context of the invention.
    These battery cells 4 are, on the one hand, arranged side by side and with an interstitial space between neighboring battery cells 4, on the other hand, arranged in a battery block 3 consisting of a single piece (in agreement with a first embodiment of the invention) or at least two 3 ′ sub-blocks (which will be described later in connection with the second embodiment of the invention) mutually superimposed or joined and, finally, electrically connected between them at each of their opposite ends 4 'and 4 according to a series / parallel assembly
    -6 predetermined thus forming two opposite faces 3 'and 3 of electrical connection, for the battery block 3 in one piece or for each sub-block 3'.
    In the embodiment corresponding to FIGS. 3 to 5, the battery block 3 comprises a number of one hundred and twenty battery cells 4 arranged side by side in a regular matrix of ten rows and twelve columns.
    In the embodiment corresponding to FIGS. 8, 9, 11 and 12, the battery block 3 comprises a number of three sub-blocks 3 ′ each comprising a number of twenty battery elements 4 arranged side by side on two levels.
    In accordance with the invention, this battery device 1 comprises, at each of the connection faces 3 ′, 3 of the battery block 3 in one piece or of each sub-block 3 ′, surface partitioning means 7, 7 ′ of the internal volume of the housing 2 defining, with one of a compartmentalization means 7 ′, 7, a portion of continuous wall 5, 5 ′ of said housing 2 and a separate continuous wall 5, of the housings 8, 8 ′, 8 waterproof. At least the electrical connection zones 9, 9 ′ of the ends 4 ′, 4 of the battery cells 4 open out or are arranged in these sealed housings 8, 8 ′, 8 and these sealed housings 8, 8 ′, 8 contain the means 10 electrical connection of said battery cells 4.
    These electrical connection means 10 are preferably seamless connection means, such as metal contact tongues 10 ′ held by an elastic restoring force or a magnetic force on the connection zones 9, 9 ′ of the ends 4 ′, 4 of elements 4. However, soldered contacts can also be envisaged.
    In addition, and according to the invention, the ends 4 ′, 4 of the battery cells 4 respectively come into support engagement, by or with opposite end portions 16 of the bodies 4 ′, with the partitioning means 7, 7 'opposite and the remaining parts 11 of the bodies 4' of the battery cells 4 situated between said opposite compartmentalization means 7, 7 'are exposed directly to the external environment through perforated or discontinuous wall portions 6 of the housing 2.
    Thanks to the above-mentioned constructive arrangements, the invention provides a battery device 1 in which the body 4 'of each battery element 4 is exposed mainly, or almost entirely, to air.
    -7external, favoring an optimal heat exchange with the latter, even though electrical connections are made at the two opposite ends 4 ′ and 4 of the battery elements 4, being arranged in insulated and sealed housings 8, 8 ′ and 8. This sealing of the housings 8, 8 ', 8 is configured to allow, on the one hand, the pressure balance of the housings 8, 8', 8 with the atmospheric pressure outside the housing 2 and, on the other hand, the evacuation to the outside of any internal humidity to avoid condensation thereof. Such sealing by internal compartmentalisation and with controlled exchange with the outside makes it possible to increase the life of the battery device 1 by considerably limiting corrosions at the level of the electrical connections as well as the risks of short-circuits in these same connections, while authorizing the use of said battery device 1 outdoors, including in rainy weather. The compartmentalization means 7, 7 ′ may comprise for this purpose, preferably each, at least one small opening 17 ′ covered for example with a hydrophobic or liquid impermeable textile membrane.
    The compartmentalization means 7 and 7 ′ while simultaneously ensuring a support and maintenance function for the battery cells 4 and a sealing function at their ends 4 ′, 4, makes it possible to limit the weight of the battery device 1.
    In addition, the invention advantageously uses the cumulative rigidity of the bodies 4 ′ of the elements 4 all oriented, in a single block or by sub-blocks 3 ′, in the same direction in a parallel arrangement. The provision of a constructive stiffening element in this direction, at least on the extension of the parts 11 of the bodies 4 ′ is therefore reduced, even superfluous (simpler structure, less weight). FIG. 3 also shows an example of mechanical assembly means of the battery block 3 at the level of the compartmentalization means 7 and 7 ′ by the use of bosses 30, 30 ′ integrated in the compartmentalization means and receiving columns 30 assembled with them by screws, not shown, these columns 30 being distributed in the battery block 3 among the elements 4 and forming rigid spacers between the means 7, 7 '. A seal can be provided at the level of the bosses 30, 30 ′ so as to avoid possible migration of humidity in the housings 8, 8 ′ and 8 by these mechanical assembly means. The use of these assembly means 30, 30 ′, 30 facilitates the handling of the battery block 3 when it is mounted, for its
    -8 handling or its control, before the final assembly of the battery device 1. The battery elements 4 can of course be mounted in the same direction or alternately inverted, so as to establish the voltage and capacity characteristics of the device battery 1 by an appropriate configuration of the series / parallel connections of the battery elements 4 and of the mutual electrical connection means 10.
    Advantageously, the compartmentalization means 7, 7 ′ include reliefs 15 or recesses 15 ′ and cutouts 15 forming a pattern of reception sites which determines the spaced arrangement of the battery cells 4 and which contributes to their lateral retention and to their longitudinal setting, coming in support engagement with the end portions 16 of these battery cells 4.
    In accordance with a simple and preferred constructive variant of the invention, emerging from FIGS. 3, 4, 5, 9, 10A, 10B and 12 in particular, the compartmentalization means 7, 7 ′ each consist of an openwork plate, having cutouts 15 coinciding with the ends 4 ′, 4 of the various battery cells 4 and each defining an access passage between the interior of the housing 8, 8 ′, 8 adjoining and the electrical connection zone 9, 9 ′ at least of the ends 4 ', 4 corresponding to the battery elements 4, these cutouts 15 being advantageously located at the bottom of recesses 15' of the plate 7, 7 'considered or surrounded by annular reliefs 15 receiving the end portions 16 of the bodies 4' of the elements battery 4.
    Preferably, and as shown in FIGS. 4, 5, 10A, 10B and 12, the connection zones 9, 9 ′ are, with respect to the interior volumes of the sealed housings 8, 8 ′, 8 set back or at most so flush in the cutouts 15.
    According to a first constructive alternative, it can be provided that the perforated plates 7, 7 ′ forming compartmentalization means each extend in one piece and at a distance over the ends 4 ′, 4 of the cylindrical bodies 4 ′ of the elements battery 4.
    According to a second constructive alternative, it can be provided that the perforated plates 7, 7 ', preferably each in one piece and forming compartmentalization means, are fitted on the opposite ends 4' and 4 of the cylindrical bodies 4 'of the elements of battery 4 at their end portions 16.
    In accordance with a characteristic of the invention, each perforated plate 7, 7 'has a peripheral edge 7', 20, 20 'cooperating by mechanical engagement either with a peripheral edge 20', 20 of another perforated plate 7 ', 7 arranged opposite, either with an internal formation 19 of one of the continuous wall portions 5, 5 ′, 5, this with the interposition of a suitable sealing means 17, 17, 21 and by making a mounting wedged between the two components 7, 7 ', 5, 5' which cooperate.
    Advantageously, and as shown for example in FIGS. 3 to 5, at least one 8 ′ of watertight housings 8, 8 ′, 8 possibly of greater volume, contains means 12 for electrical connection of the battery pack 3 to a connector 12 mounted in the housing 2 and allowing connection to one or more external loading or unloading device (s), as well as possibly electronic means 12 ′ for managing and controlling the battery pack 3, if necessary grouped together on a card 13 at least. An insulation plate 13 ′, shown in FIG. 3, consisting for example of a thin rigid insulating layer of plastic material, allows electrical insulation between the electrical connection means 12 and the electrical connection means 10 of the elements 4. The electrical cables connecting the connector 12 to the electrical connection means 12 can pass through the sealed housing 8 ′ by means of cable glands 17 ′ associated for example with the partitioning means 7.
    In the embodiment of Figures 9, 11 and 12, at least one of the sealed housings 8, 8 is connected to an additional compartment 22 sealingly enclosing the means 12 for electrical connection of the battery pack 3.
    To internally connect the polar regions repeating the connections coming from opposite faces 3 ′ and 3, that is to say without requiring any external connection means, it can advantageously be provided, as shown for example in FIG. 3, that the battery block 3 in one piece or each sub-block 3 'incorporates, in place of a battery element 4 in the arrangement of battery elements 4, a conduit 14 of the same dimensions as such a battery element 4 and mounted in a rigid and sealed manner, like the battery elements 4 between the two compartmentalization means 7 and 7 ′ in the form of plates, allowing the passage of electrical connection lines between the sealed housings 8, 8 ', 8.
    This connection duct 14, forming a dummy battery element 4, is produced so as to cooperate with the sealing means 18 of the battery elements 4.
    In accordance with a preferred variant of construction, emerging for example from Figures 1, 2, 6 and 7, the housing 2 comprises two wall portions 5, 5 'continuous and sealed, mutually opposite and connected to each other by wall portions 6 at least partially perforated or discontinuous, each wall portion 5, 5 'belonging to a constituent part 2', 2 of the housing 2 and the perforated wall portions 6 being advantageously mounted with engagement by interlocking between the two constituent parts 2 ' , 2 or by being integrated into them.
    One 2 ′ of parts 2 ′, 2 may have a shell shape, partially curved, to constitute the housing 8 ′ of greater volume and the other 2 a flatter shape.
    In addition, provision may be made for the two portions of continuous and sealed walls 5 and 5 'to form two opposite side walls extending substantially in planes defined by the height H and the width L and constitute the main faces of the parallelepiped formed. substantially by the housing 2, the perforated wall portions 6 extending peripherally between the two aforementioned main wall portions 5 and 5 ′, by connecting them mutually, this on at least three peripheral sides of said housing 2.
    In order to guarantee efficient cooling, without the use of active circulation means, the perforated wall portions 6 may comprise structures 6 ′ promoting the circulation of air passing through and simultaneously forming a barrier against the introduction of solid bodies (as for example example of sheets or gravel) from the outside in the housing 2, such as for example slots or fins with aerodynamic profile, possibly mounted in air vents provided in said wall portions 6. The latter may advantageously have structures in the form of gills with blades 6 'inclined in the manner of shutters. The resistance to the circulation of air through the casing 2 is thus reduced, and heating of the battery cells 4 accentuates this circulation of air by convection, thereby accelerating the cooling of the battery cells 4.
    The location of the perforated wall portions 6 on the housing 2 is determined in such a way that the circulation of air by natural convection between the battery cells 4 in the internal volume delimited by the two
    - 11 partitioning wall 7 and 7 ′ is favored, in particular in the normal position for loading or using the device 1.
    The constituent parts 2 ′ and 2 of the housing (assembled for example by screwing, by gluing or by elastic engagement or by notches), as well as the partitioning walls 7 and 7 ′ are preferably produced by molding or thermoforming in a thermoplastic material.
    According to a first embodiment, illustrated in FIGS. 1 to 5, it is advantageously provided that, when the battery block 3 is in one piece or in one piece, the battery elements 4 are arranged longitudinally in the direction of the thickness E and perpendicular to the two main faces of the rectangular parallelepiped formed by the housing
    2.
    In this first embodiment, the battery device 1 can comprise, on the one hand, continuous peripheral sealing means 17, 17 between the compartmenting means 7, 7 'and the continuous wall portions 5, 5' of the housing 2 and, on the other hand, individual sealing means 18 between the ends 4 ', 4 of each of the battery cells 4 and the compartmentalization means 7, 7', ie at the ends 4 ', 4 of cylindrical body 4 ′ of the battery elements 4, ie at the level of the lateral face of end portions 16 of said cylindrical bodies, recessed with respect to said ends 4 ′, 4.
    As shown in FIGS. 4A to 4D, and 5A to 5D, the invention can propose, for example, that the partitioning means 7, 7 ′ consist of plates provided with cutouts 15, each surrounded by an annular relief 15 receiving the portion end 16 of a battery element 4, and that a circumferential sealing means 18 between the apertured plate concerned 7, 7 'and the end 4', 4 of the battery element 4 concerned is present at the level of each cutout 15, said plates 7, 7 'resting against and / or on said end portions 16, with interposition of said sealing means 18.
    The sealing means 18 may for example consist of flexible washers, as shown, in O-rings or in lips associated with baffles.
    The sealing means 18 are preferably made of an insulating and flexible material such as expanded polyethylene plastic in closed cells, on the one hand ensuring sealing between the
    - 12 end portions 16 of the battery cells 4 and the partitioning means 7, 7 ′ and on the other hand compensate for the dimensional tolerances for manufacturing the cells 4, different between the manufacturing batches or of a manufacturer of battery cells battery to another, when the battery is assembled. These means also make it possible to absorb at the level of the elements 4 possible shocks that the battery device 1 will come to know during its life cycle and its uses. They can also consist of a flexible adhesive tape. It is also possible that the sealing means 18 are covered with double-sided adhesive tape to adhere on the one hand to a surface of one of the compartmentalization means 7, 7 ', and on the other hand to the end portions 16 of the battery elements 4. Thus assembled, the battery block 3 does not, if necessary, need additional mechanical assembly means, thereby reducing the weight of the battery block 3.
    The flexibility of the sealing means 18 also makes it possible to maintain a sufficient seal in the event of thermal expansion linked to intense use of the battery over a long period of time and / or to extreme ambient temperature conditions.
    With a view to creating watertight housings 8, 8 ′ and 8, it can be provided that each compartmenting means 7, 7 ′ in the form of perforated plate is received by cooperating engagement and wedged by its peripheral edge 7 ′, and with interposition a sealing means 17, 17 in, against or on a continuous internal formation 19 of the corresponding continuous or sealed wall portion 5, 5 ′ of the housing 2, this formation consisting for example of a shoulder, a flange, a wing, rib, groove or the like.
    In accordance with a second embodiment, and as illustrated in FIGS. 6 to 12, when the battery block 3 is constituted by the mechanical and electrical association of at least two sub-blocks 3 ', each sub-block 3' comprises at least one row, preferably at least two rows arranged in parallel layers of battery cells 4, all oriented longitudinally in the direction of the height H or the width L of the rectangular parallelepiped formed substantially by the housing 2 and arranged parallel to the main faces of the latter, said sub-blocks 3 'being either superimposed as stages of battery cells 4 in the height direction H, or joined together laterally in the direction of the width L, preferably with construction and interposition a waterproof housing
    - 13 8 intermediate between two adjacent sub-blocks 3 ', an extreme sealed housing 8 being advantageously present at each of the opposite ends of the battery block 3.
    The aforementioned figures further show that each intermediate sealed housing 8 is constituted by two compartmentalization means 7 and 7 ′ in the form of plates provided with edges 20, 20 ′ of coincident and mutually cooperating peripherals by sealed assembly, in the manner of two complementary shells , the battery block 3 comprising at least one interstitial sealed housing 8 located between two sub-blocks 3 ′ and two extreme housings 8 located at the two opposite longitudinal ends of the battery block 3.
    Each extreme housing 8 is for example formed by cooperation of a compartmentalization means 7, 7 'mounted on the elements 4 of the end sub-block 3 with a continuous wall 5.
    Preferably, the edge 20 of one 7 of the two partitioning plates 7, 7 ′ of each intermediate sealed housing 8 has a groove or groove structure and the edge 20 ′ of the other 7 ′ of the two partitioning plates has a structure with at least one rib or wing, suitable and intended to fit into said groove or groove, so as to create a baffle between the two edges 20 and 20 'assembled, a seal 21 being present in said groove 20 or on said rib 20 '.
    Advantageously, the assembly by interlocking at the edges 20, 20 ′ of the two partitioning plates 7 and 7 ′ is locked by elastic snap-in of complementary cooperating means 20, of the notch / notch type.
    In the embodiment shown in FIGS. 6 to 12, the battery device 1, and more precisely the battery block 3 formed of several sub-blocks 3 ′, comprises, on the one hand, sealed interstitial or intermediate housings 8 , located between two sub-blocks 3 'of battery cells 4 superimposed or adjacent and housing the interconnection means 10 of the electrical connection zones 9, 9' accessible from the battery cells 4 of the two sub-blocks 3 'concerned and , on the other hand, watertight or extreme end housings 8, situated at the level of the lower or upper edge or of a lateral edge of an arrangement of sub-blocks 3 'superimposed or placed side by side, and one of the of 7 and 7 ′ plates of external compartmentalisation has no cutout 15 and constitutes a continuous wall 5.
    In view of the carrying in use of the battery device 1, the latter may also include a rigid harness, not shown, attached by hooking with releasable locking on the housing 2.
    Preferably, the battery cells 4 are of the lithium-ion or lithium polymer type and the housing 2 and the compartmenting means 7, 7 ′ are made of a thermoplastic material, at least the layer of material external to the battery cells 4 being of a type resistant to the aggressions of the surrounding environment.
    A carrying handle (cf. FIG. 1) can be integrated into one of the two parts 2 ′, 2 of the housing 2, or be constituted by the assembly of the two parts 2,2.
    The invention also relates, although not shown, to a power tool assembly comprising at least two components connected by a cable, namely a tool integrating at least one actuator and an autonomous power supply in the form of a battery device. This assembly is characterized in that the battery device is a battery device 1 as described above.
    This assembly can also include a charger, which can also be connected to the battery device 1, alternately with the tool.
    Of course, the invention is not limited to the embodiments described and shown in the accompanying drawings. Modifications remain possible, in particular from the point of view of the constitution of the various elements or by substitution of technical equivalents, without thereby departing from the scope of protection of the invention.
    权利要求:
    Claims (22)
    [1]
    1. Portable battery device (1) comprising a housing (
    [2]
    2) generally of substantially parallelepiped shape, having a height (H), a width (L) and a thickness (E), and a battery block (3) housed in the latter, the battery block (3) being composed of a plurality of battery cells (4) with elongate sealed bodies (4 '), preferably cylindrical in shape, having two opposite ends (4' and 4), the battery cells (4) being arranged on the one hand side by side and with an interstitial space between neighboring elements (4), on the other hand, arranged in a battery block (3) consisting of a single piece or of at least two sub-blocks (3 ') mutually superimposed or joined and, finally, electrically connected to each other at each of their opposite ends (4 ', 4) according to a predetermined series / parallel assembly thus forming two opposite faces (3', 3) of electrical connection, for the battery pack ( 3) in one piece or for each subblock (3 '), battery device (1) characterized in that it comprises, at each of the connection faces (3, 3 ') of the battery block (3) in one piece or of each sub-block (3'), surface partitioning means (7, 7 ') of the internal volume of the housing (2) defining, by cooperation with one of a portion of a continuous wall (5, 5 ′) of said housing (2), another compartmentalization means 7 ′, 7, and a separate continuous wall (5), sealed housings (8, 8 ', 8), in that at least the electrical connection zones (9, 9') of the ends (4 ', 4) of the battery cells (4) open out or are arranged in these housings sealed (8, 8 ', 8), in that these sealed housings (8, 8', 8) contain the means (10) for electrical connection of said elements (4), in that the ends (4 ', 4) elements (4) respectively come into support engagement on or with opposite end portions (16) of the bodies (4 ′) of the battery elements (4) with the opposite partitioning means (7, 7 ′) and what the remaining parts (11) es of the bodies (4 ') of said elements (4) situated between said opposite compartmentalization means (7, 7') are exposed directly to the external environment through perforated or discontinuous wall portions (6) of the housing (2) .
    - 162. Battery device according to claim 1, characterized in that the partitioning means (7, 7 ') include reliefs or recesses (15') (15) and cutouts (15) forming a pattern of sites of reception which determines the spaced arrangement of the elements (4) and which ensures their lateral retention and their longitudinal setting, coming into engagement with at least end portions (16) of these elements (4).
    [3]
    3. Battery device according to any one of claims 1 and 2, characterized in that the compartmenting means (7, 7 ') each consist of an openwork plate, having cutouts (15') coinciding with the ends (4 ', 4) different battery elements (4) and each defining an access passage between the interior of the housing (8, 8', 8) adjoining and the electrical connection area (9, 9 ') at least corresponding ends (4 ', 4) of the battery cells (4), these cutouts (15) being advantageously located at the bottom of recesses (15') of the plate (7, 7 ') considered or surrounded by annular reliefs (15' ) receiving the end portions (16) of the bodies (4 ') of the battery cells (4).
    [4]
    4. Battery device according to claim 3, characterized in that the perforated plates (7, 7 ') forming partitioning means each extend in one piece and at a distance over the ends (4', 4) cylindrical bodies (4 '), battery cells (4).
    [5]
    5. Battery device according to claim 3, characterized in that the perforated plates (7, 7 ') forming partitioning means are fitted on the opposite ends (4' and 4) of the cylindrical bodies (4) of the elements (4) at their end portions (16).
    [6]
    6. Battery device according to any one of claims 3 to 5, characterized in that each perforated plate (7, 7 ') has a peripheral edge (7'; 20, 20 ') cooperating by mechanical engagement either with an edge peripheral (20 ', 20) of another perforated plate (7', 7) arranged opposite, either with an internal formation (19) of one of the continuous wall portions (5, 5 '; 5), this with the interposition of a suitable sealing means (17, 17; 21) and by making an assembly wedged between the two components (7, 7 ', 5, 5', 5) which cooperate.
    [7]
    7. Battery device according to any one of claims 1 to 6, characterized in that at least one (8) of the sealed housings (8, 8 ', 8), possibly that of larger volume, contains
    - 17 means (12) for electrical connection of the battery pack (3) to a connector (12) mounted in the housing (2) and allowing connection to one or more external device (s) for charging or discharging, as well as possibly electronic means (12) for managing and controlling the battery pack (3), if necessary grouped together on at least one card (13).
    [8]
    8. Battery device according to any one of claims 1 to 7, characterized in that the battery pack (3) in one piece or each sub-block (3 ') integrates, instead of a battery element (4) in the arrangement of battery elements (4), a conduit (14) of the same dimensions as such a battery element (4) and mounted rigidly and tightly, like the battery elements (4) between the two partitioning means (7 and 7 ') in the form of plates, allowing the passage of electrical connection lines between the sealed housings (8, 8', 8).
    [9]
    9. Battery device according to any one of claims 1 to 8, characterized in that the housing (2) comprises two wall portions (5, 5 ') continuous and sealed, mutually opposite and connected to each other by portions of at least partially perforated or discontinuous wall (6), each wall portion (5, 5 ') belonging to a constituent part (2', 2) of the housing (2) and the perforated wall portions (6) being advantageously mounted with engaged by interlocking between the two constituent parts (2 ', 2) or by being integrated therein.
    [10]
    10. Battery device according to claim 9, characterized in that the two portions of continuous and sealed walls (5 and 5 ') form two opposite side walls extending substantially in planes defined by the height (H) and the width (L) and constitute the main faces of the parallelepiped formed substantially by the housing (2), the perforated wall portions (6) extending peripherally between the two aforementioned main wall portions (5 and 5 ′), connecting them mutually, this on at least three peripheral sides of said housing (2).
    [11]
    11. Battery device according to any one of claims 1 to 10, characterized in that the perforated wall portions (6) comprise structures (6 ') promoting the circulation of air passing through and simultaneously forming a barrier against introduction solid bodies from the outside in the housing (2), such as for example slots or fins with aerodynamic profile, optionally mounted in air vents provided in said wall portions (6).
    - 1812. Battery device according to any one of claims 1 to 11, characterized in that, when the battery block (3) is in one piece or in one piece, the battery elements (4) are arranged longitudinally along the thickness direction (E) and perpendicular to the two main faces of the rectangular parallelepiped formed by the housing (2).
    [12]
    13. Battery device according to claim 12, characterized in that it comprises, on the one hand, continuous peripheral sealing means (17, 17) between the partitioning means (7, 7 ') and the portions of continuous walls (5, 5 ') of the housing (2) and, on the other hand, individual sealing means (18) between the ends (4', 4) of each of the battery elements (4) and the means compartmentalization (7, 7 '), either at the ends (4', 4) of the cylindrical bodies (4 ') of the battery cells (4), or at the side face of end portions (16) said cylindrical bodies (4 '), set back relative to said ends (4', 4).
    [13]
    14. Battery device according to any one of claims 12 and 13, characterized in that the compartmenting means (7, 7 ') consist of plates provided with cutouts (15'), each surrounded by an annular relief ( 15) receiving the end portion (16) of a battery element (4), and in that a circumferential sealing means (18) is present between the perforated plate concerned (7, 7 ') and l 'end (4', 4) of the considered battery element (4), at each cutout (15 '), said plates (7, 7') resting against and / or on said end portions (16), with the interposition of said sealing means (18).
    [14]
    15. Battery device according to any one of claims 12 to 14, characterized in that each compartmenting means (7, 7 ') in the form of perforated plate is received by cooperating engagement and wedged by its peripheral edge (7') , and with the interposition of a sealing means (17), in, against or on a continuous internal formation (19) of the corresponding continuous or sealed wall portion (5, 5 ′) of the housing (2), this formation consisting for example of a shoulder, a flange, a wing, a rib, a groove or the like.
    [15]
    16. Battery device according to any one of claims 1 to 11, characterized in that, when the battery pack (3) is
    - 19 constituted by the mechanical and electrical association of at least two sub-blocks (3 '), each sub-block (3') comprises at least one row, preferably at least two rows arranged in parallel layers of battery cells (4 ), all oriented longitudinally in the direction of the height (H) or the width (L) of the rectangular parallelepiped formed substantially by the housing (2) and arranged parallel to the main faces of the latter, said sub-blocks (3 ') being either superimposed as stages of battery cells (4) in the height direction (H), or joined together laterally in the width direction (L), preferably with the formation and interposition of a housing (8 ) sealed intermediate between two adjacent sub-blocks (3 ′), an extreme sealed housing (8) being present at each of the opposite ends of the battery block (3).
    [16]
    17. Battery device according to claim 16, characterized in that each sealed housing (8) intermediate is constituted by two compartmentalization means (7 and 7 ') in the form of plates provided with peripheral edges (20, 20') coincident and mutually cooperating by sealed assembly, in the manner of two complementary shells, the battery block (3) comprising at least one interstitial sealed housing (8) located between two sub-blocks (3 ') and two extreme housings (8') located at level of the two opposite longitudinal ends of the battery pack (3).
    [17]
    18. Battery device according to claim 17, characterized in that the edge (20) of one (7) of the two partitioning plates (7, 7 ') of each sealed housing (8) intermediate has a grooved structure or groove and in that the edge (20 ') of the other (7') of the two partitioning plates has a structure with at least one rib or wing, suitable and intended to fit into said groove or groove, so as to create a baffle between the two edges (20 and 20 ') assembled, a seal (21) being present in said groove (20) or on said rib (20').
    [18]
    19. Battery device according to claim 18, characterized in that the assembly by interlocking at the edges (20, 20 ') of the two partitioning plates (7 and 7') is locked by elastic snap-on of complementary means (20 ) cooperants, notch / notch type.
    [19]
    20. Battery device according to any one of claims 16 to 19, characterized in that it comprises, on the one hand, sealed housings (8) intermediate, located between two sub-blocks (3 ')
    Of elements (4) superimposed or adjacent and housing the interconnection means (10) of the electrical connection zones (9, 9 ') accessible from the elements (4) of the two sub-blocks (3') concerned and, d '' on the other hand, watertight end housings (8 '), located at the lower edge or
    5 upper or a side edge of an arrangement of sub-blocks (3 ') superimposed or joined, and the plate (7, 7') of external compartmentalization is devoid of cutout (15) and constitutes a continuous wall ( 5).
    [20]
    21. Battery device according to any one of claims 1 to 20, characterized in that it also comprises a
    10 rigid harness attached by hooking with releasable locking on the housing (2).
    [21]
    22. Battery device according to any one of claims 1 to 21, characterized in that the battery elements (4) are of the lithium-ion or lithium polymer type and in that the housing (2) and the
    15 compartmentalization means (7, 7 ') are made of a thermoplastic material, at least the layer of outer material of the battery cells (4) being of a type resistant to attack by the surrounding environment.
    [22]
    23. Power tool assembly comprising at least two components connected by a cable, namely a tool integrated in the
    20 minus an actuator and an autonomous power supply in the form of a battery device, assembly characterized in that the battery device is a battery device according to any one of claims 1 to 22.
    1/9
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    同族专利:
    公开号 | 公开日
    CN109716553A|2019-05-03|
    WO2018055256A1|2018-03-29|
    JP2019532482A|2019-11-07|
    FR3056335B1|2020-02-21|
    EP3516711A1|2019-07-31|
    KR20190049797A|2019-05-09|
    EP3516711B1|2020-11-04|
    ES2847233T3|2021-08-02|
    US20190267585A1|2019-08-29|
    US10847767B2|2020-11-24|
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    法律状态:
    2017-08-10| PLFP| Fee payment|Year of fee payment: 2 |
    2018-03-23| PLSC| Search report ready|Effective date: 20180323 |
    2018-08-13| PLFP| Fee payment|Year of fee payment: 3 |
    2019-08-27| PLFP| Fee payment|Year of fee payment: 4 |
    2020-09-14| PLFP| Fee payment|Year of fee payment: 5 |
    2021-09-21| PLFP| Fee payment|Year of fee payment: 6 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1658791|2016-09-20|
    FR1658791A|FR3056335B1|2016-09-20|2016-09-20|PORTABLE BATTERY DEVICE WITH PASSIVE AIR COOLING SYSTEM|FR1658791A| FR3056335B1|2016-09-20|2016-09-20|PORTABLE BATTERY DEVICE WITH PASSIVE AIR COOLING SYSTEM|
    JP2019536707A| JP2019532482A|2016-09-20|2017-09-07|Portable battery device with passive air cooling system|
    KR1020197009631A| KR20190049797A|2016-09-20|2017-09-07|Portable battery device with passive air cooling system|
    EP17771818.6A| EP3516711B1|2016-09-20|2017-09-07|Portable battery device with passive air cooling system|
    US16/334,995| US10847767B2|2016-09-20|2017-09-07|Portable battery device with a passive air-cooling system|
    PCT/FR2017/052383| WO2018055256A1|2016-09-20|2017-09-07|Portable battery device with a passive air-cooling system|
    ES17771818T| ES2847233T3|2016-09-20|2017-09-07|Portable battery device with a passive air cooling system|
    CN201780057730.7A| CN109716553A|2016-09-20|2017-09-07|Portable electric pool device with passive type air cooling system|
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