EP3182226B1 - Solar skeleton watch - Google Patents

Solar skeleton watch Download PDF

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Publication number
EP3182226B1
EP3182226B1 EP15200201.0A EP15200201A EP3182226B1 EP 3182226 B1 EP3182226 B1 EP 3182226B1 EP 15200201 A EP15200201 A EP 15200201A EP 3182226 B1 EP3182226 B1 EP 3182226B1
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EP
European Patent Office
Prior art keywords
skeleton watch
watch
skeleton
movement
solar cell
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.)
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Application number
EP15200201.0A
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German (de)
French (fr)
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EP3182226A1 (en
Inventor
Michel Willemin
Alain Jornod
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Swatch Group Research and Development SA
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Swatch Group Research and Development SA
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Publication date
Application filed by Swatch Group Research and Development SA filed Critical Swatch Group Research and Development SA
Priority to EP15200201.0A priority Critical patent/EP3182226B1/en
Priority to US15/214,634 priority patent/US10018968B2/en
Priority to JP2016159460A priority patent/JP6182653B2/en
Priority to KR1020160110920A priority patent/KR102069410B1/en
Priority to CN201610808383.4A priority patent/CN106886145B/en
Publication of EP3182226A1 publication Critical patent/EP3182226A1/en
Priority to KR1020180116471A priority patent/KR20180109813A/en
Application granted granted Critical
Publication of EP3182226B1 publication Critical patent/EP3182226B1/en
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    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C10/00—Arrangements of electric power supplies in time pieces
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C10/00—Arrangements of electric power supplies in time pieces
    • G04C10/02—Arrangements of electric power supplies in time pieces the power supply being a radioactive or photovoltaic source
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B37/00—Cases
    • G04B37/0091—Cases for clock parts, e.g. for the escapement or the electric motor
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B45/00—Time pieces of which the indicating means or cases provoke special effects, e.g. aesthetic effects
    • G04B45/02—Time pieces of which the clockwork is visible partly or wholly
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C9/00—Electrically-actuated devices for setting the time-indicating means
    • G04C9/08—Electrically-actuated devices for setting the time-indicating means by electric drive
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/14—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating a stepping motor

Definitions

  • the present invention relates to the technical field of watchmaking. More particularly, it relates to a skeleton type watch comprising a solar cell.
  • skeleton watch is meant a watch comprising a movement in which certain parts typically its dial, its plate and / or its bridges are perforated in order to make visible the organs of movement by the wearer of the watch.
  • the movement of the watch is obscured by the dial or by the solar cell, which is not compatible with so-called skeleton watches, the latter generally not including a full dial and showing all or part of the organs of which they are constituted. Indeed, in this case, maintaining the visible organs is not very compatible with the arrangement of a solar cell which too must be visible to absorb the light and generate enough energy to power a quartz movement.
  • Documents are also known JP2011203213 , JP09281254 , FR2595481 and US2002 / 0167867 timepieces comprising a solar cell.
  • the object of the present invention is to integrate a photovoltaic cell in a skeleton-type watch, while maintaining an exposed surface sufficient to supply energy to a quartz watch movement or an additional electronic function in the case of a mechanical watch movement.
  • the present invention relates to a watch of the skeleton type, according to claim 1, provided with at least one photovoltaic cell, which will also be called solar cell or simply cell in the context of this booklet.
  • the Figures 1 to 4 represent a skeleton watch 1 which, in a conventional manner, comprises a case formed of the caseband 2, the ice 3 and the bottom 4.
  • the ice is fixed on the caseband 2 in a conventional manner with the aid of a telescope L.
  • the housing houses all the members of a quartz movement 5 ( figure 4 ) classic. It can be seen in the figures in particular a plate P having a plurality of apertures A 1 , A 2 , A 3 , A 4 , A 5 , A 6 , A 7 and A 8 , an electric motor M, a gear train R and an integrated circuit 6
  • the organs are arranged between the bottom 4 and the ice 3 and visible wholly or partly through the ice.
  • the movement 5 is held in the middle part 2 by means of a flange 9 also forming the casing ring.
  • the movement 5 can be a mechanical watch movement.
  • the originality of the skeleton watch lies in the addition of a solar cell and in its positioning within the case.
  • the photovoltaic cell 7 is arranged on the bottom 4 of the watch between the latter and the movement 5.
  • the light passes through the lens 3 and reaches the cell 7 through the perforations A 1 , A 2 , A 3 , A 4 , A 5 , A 6 , A 7 and A 8 formed between the members of the movement and in particular in the plate P.
  • These movement members obscure an area of between 65 and 90% of the surface of the bottom 4. This means that the apertures A 1 , A 2 , A 3 , A 4 , A 5 , A 6 , A 7 and A 8 represent between 10 and 35% of this area.
  • the surface of the cut-outs is of the order of 146 mm 2 , ie 22% of the bottom area.
  • the power collected by the cell is equivalent to that collected by a cell of 2.9 cm diameter placed under a dial having a transmission of 22%.
  • the power thus harvested for example by an amorphous silicon solar cell made by physical and chemical depositions (PVD, CVD) on rigid or flexible substrates is on average 4.4 ⁇ W over one year. This power is clearly greater than the consumption of a 2-needle quartz movement which is typically 0.3 ⁇ W.
  • the solar cells may be covered with additional layers, for example a decorative layer of a semi-transparent material to give them a particular aesthetic that can match the movement parts such as, for example, a golden appearance .
  • additional layers for example a decorative layer of a semi-transparent material to give them a particular aesthetic that can match the movement parts such as, for example, a golden appearance .
  • the loss of transmission resulting from the addition of these layers could be offset by higher efficiency solar cell technology typically using CuInGaSe or AsGa-based solar cells.
  • a single solar cell is disposed on the bottom 4 and covers the entire bottom or a particularly well-lit part of the bottom.
  • the surface of each of the cells is similar to avoid a limitation of the current imposed by the cell having the smallest exposed surface. By connecting the cells in parallel, the current limitation due to the surface is avoided, but the output voltage is lower.
  • the electrical connection of the son is made for example by brazing with a suitable alloy (tin or other), by thermo compression, assisted or not, or by ultrasound.
  • a photovoltaic cell 7 is placed on a member exposed to the view, between the latter and the ice 3. In this way, the light passes through the ice and directly reaches the photovoltaic cell 7.
  • the cell is preferably placed on a fixed member of the movement to keep visible at least partially the moving parts that make the skeleton watch attractive.
  • the cell 7 can be placed on a bridge 8 as shown in FIG. figure 3 . It can also be placed on the integrated circuit 6 of the quartz movement, as shown in FIG. figure 4 , or the electronic function to be powered in the case of a variant not shown of a mechanical movement equipped with a complementary electronic module.
  • the cell 7 may be placed alternately or alternatively on the printed circuit CI carrying the integrated circuit 6.
  • a cell may be straddling several members or several cells may be arranged on the members provided that each cell has an exposed surface. Similar to again avoid the limitation of current imposed by the smallest cell.
  • an illuminated effective area of between 8 and 27% of the total surface area visible through the ice is targeted, ie an average power harvested per year of between 1.6 and 5.4 ⁇ W for amorphous silicon and between 6.1 and 20.6 ⁇ W for AsGa.
  • the present invention does not exclude that the two embodiments are combined, i.e. that cells are positioned on the bottom and on visible organs through the ice.
  • the assembly of the cell to the housing can be done in a very simple manner without having to make a structure carrying the cell.
  • the cell 7 may be glued or clipped on the bottom 4 or on an organ according to the chosen embodiment. It is not necessary to provide a specific housing that would change the stamping operations during the manufacture of the housing. If necessary, it is sufficient to raise the movement 5 of the thickness of the cell in the case where the cell is positioned on the bottom of the housing.
  • This type of assembly also makes it possible to better protect the cell which according to the chosen photovoltaic technology may be intrinsically fragile, for example in the case of a glass substrate.
  • the integrated circuit is preferably associated with a storage capacitor or a rechargeable battery (not shown).
  • the electrical connection between the cell (s) and the printed circuit may be carried out by two wires or by spring contacts arranged under the printed circuit board CI including the integrated circuit and the capacitor.
  • the electrical energy produced serves to power the quartz movement or an additional function on a mechanical watch, for example, an illumination function.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electric Clocks (AREA)
  • Electromechanical Clocks (AREA)
  • Photovoltaic Devices (AREA)

Description

OBJET DE L'INVENTIONOBJECT OF THE INVENTION

La présente invention se rapporte au domaine technique de l'horlogerie. Plus particulièrement, elle se rapporte à une montre de type squelette comprenant une cellule solaire. Par montre squelette on entend une montre comportant un mouvement dans lequel certaines parties typiquement son cadran, sa platine et/ou ses ponts sont ajourés dans le but de rendre visibles des organes du mouvement par le porteur de la montre.The present invention relates to the technical field of watchmaking. More particularly, it relates to a skeleton type watch comprising a solar cell. By skeleton watch is meant a watch comprising a movement in which certain parts typically its dial, its plate and / or its bridges are perforated in order to make visible the organs of movement by the wearer of the watch.

ARRIÈRE-PLAN TECHNOLOGIQUE ET ÉTAT DE LA TECHNIQUETECHNOLOGICAL BACKGROUND AND STATE OF THE ART

C'est une pratique courante de munir les montres d'une cellule solaire afin d'alimenter en énergie le mouvement électronique. La cellule solaire est généralement disposée sur le pourtour du cadran en dessous de la glace ou peut remplacer le cadran pour absorber un maximum de lumière. Il existe également des alternatives comme dans les documents US 8,693,290 et EP 2 796 946 où la cellule solaire est positionnée sous le cadran qui est réalisé avec une résine transparente ou translucide.It is a common practice to provide watches with a solar cell to power the electronic movement. The solar cell is usually placed around the dial under the ice or can replace the dial to absorb as much light as possible. There are also alternatives as in the documents US 8,693,290 and EP 2 796 946 where the solar cell is positioned under the dial which is made with a transparent or translucent resin.

Dans ces configurations, le mouvement de la montre est occulté par le cadran ou par la cellule solaire, ce qui n'est pas compatible avec les montres dites squelettes, ces dernières ne comprenant généralement pas de cadran plein et laissant voir tout ou partie des organes dont elles sont constituées. En effet, dans ce cas, maintenir les organes visibles est peu compatible avec l'agencement d'une cellule solaire qui elle aussi doit être visible pour absorber la lumière et générer suffisamment d'énergie pour alimenter en énergie un mouvement à quartz.In these configurations, the movement of the watch is obscured by the dial or by the solar cell, which is not compatible with so-called skeleton watches, the latter generally not including a full dial and showing all or part of the organs of which they are constituted. Indeed, in this case, maintaining the visible organs is not very compatible with the arrangement of a solar cell which too must be visible to absorb the light and generate enough energy to power a quartz movement.

On connaît également des documents JP2011203213 , JP09281254 , FR2595481 et US2002/0167867 des pièces d'horlogerie comportant une cellule solaire.Documents are also known JP2011203213 , JP09281254 , FR2595481 and US2002 / 0167867 timepieces comprising a solar cell.

RÉSUMÉ DE L'INVENTIONSUMMARY OF THE INVENTION

La présente invention a pour objet d'intégrer une cellule photovoltaïque dans une montre type squelette, tout en maintenant une surface exposée suffisante pour alimenter en énergie un mouvement horloger à quartz ou une fonction électronique additionnelle dans le cas d'un mouvement horloger mécanique.The object of the present invention is to integrate a photovoltaic cell in a skeleton-type watch, while maintaining an exposed surface sufficient to supply energy to a quartz watch movement or an additional electronic function in the case of a mechanical watch movement.

A cette fin, une montre squelette selon la revendication 1 annexée est proposée et des formes d'exécution particulières sont reprises dans les revendications dépendantes.To this end, a skeleton watch according to the appended claim 1 is proposed and particular embodiments are included in the dependent claims.

BRÈVE DESCRIPTION DES FIGURESBRIEF DESCRIPTION OF THE FIGURES

Les caractéristiques et avantages de la présente invention apparaîtront à la lecture de la description détaillée ci-dessous faisant référence aux figures suivantes.

  • Les figures 1 et 2 représentent respectivement une vue du dessus et une vue en coupe de la montre squelette munie d'une cellule solaire selon un mode de réalisation préféré de l'invention. Selon ce premier mode de réalisation, la cellule est placée entre le fond et les organes du mouvement.
  • Les figures 3 et 4 représentent respectivement une vue du dessus et une vue éclatée de la montre squelette munie d'une cellule solaire selon un autre mode de réalisation préféré de l'invention. Selon ce second mode de réalisation, la cellule est placée sur des organes visibles à travers la glace et, plus précisément, sur un pont à la figure 3 et sur un circuit intégré à la figure 4.
The features and advantages of the present invention will become apparent on reading the detailed description below with reference to the following figures.
  • The Figures 1 and 2 respectively represent a top view and a sectional view of the skeleton watch provided with a solar cell according to a preferred embodiment of the invention. According to this first embodiment, the cell is placed between the bottom and the organs of the movement.
  • The figures 3 and 4 respectively represent a top view and an exploded view of the skeleton watch provided with a solar cell according to another preferred embodiment of the invention. According to this second embodiment, the cell is placed on visible organs through the ice and, more specifically, on a bridge at the figure 3 and on an integrated circuit to the figure 4 .

DESCRIPTION DÉTAILLÉE DE L'INVENTIONDETAILED DESCRIPTION OF THE INVENTION

La présente invention se rapporte à une montre du type squelette, selon la revendication 1, pourvue d'au moins une cellule photovoltaïque, qu'on appellera aussi cellule solaire ou simplement cellule dans le cadre de ce fascicule.The present invention relates to a watch of the skeleton type, according to claim 1, provided with at least one photovoltaic cell, which will also be called solar cell or simply cell in the context of this booklet.

Les figures 1 à 4 représentent une montre squelette 1 qui, de manière classique, comporte un boîtier formé de la carrure 2, de la glace 3 et du fond 4. La glace est fixée sur la carrure 2 de manière classique à l'aide d'une lunette L. Dans l'exemple illustré, le boîtier abrite l'ensemble des organes d'un mouvement à quartz 5 (figure 4) classique. On peut voir sur les figures notamment une platine P comportant plusieurs ajourages A1, A2, A3, A4, A5, A6, A7 et A8, un moteur électrique M, un rouage R et un circuit intégré 6. Les organes sont disposés entre le fond 4 et la glace 3 et visibles en tout ou partie à travers la glace. Dans cet exemple, le mouvement 5 est maintenu dans la carrure 2 à l'aide d'un rehaut 9 formant également le cercle d'encageage. Selon une variante non représentée le mouvement 5 peut être un mouvement horloger mécanique.The Figures 1 to 4 represent a skeleton watch 1 which, in a conventional manner, comprises a case formed of the caseband 2, the ice 3 and the bottom 4. The ice is fixed on the caseband 2 in a conventional manner with the aid of a telescope L. In the illustrated example, the housing houses all the members of a quartz movement 5 ( figure 4 ) classic. It can be seen in the figures in particular a plate P having a plurality of apertures A 1 , A 2 , A 3 , A 4 , A 5 , A 6 , A 7 and A 8 , an electric motor M, a gear train R and an integrated circuit 6 The organs are arranged between the bottom 4 and the ice 3 and visible wholly or partly through the ice. In this example, the movement 5 is held in the middle part 2 by means of a flange 9 also forming the casing ring. According to a variant not shown, the movement 5 can be a mechanical watch movement.

L'originalité de la montre squelette réside dans l'ajout d'une cellule solaire et dans son positionnement au sein du boîtier.The originality of the skeleton watch lies in the addition of a solar cell and in its positioning within the case.

Selon un premier mode de réalisation illustré aux figures 1 et 2, la cellule photovoltaïque 7 est disposée sur le fond 4 de la montre entre ce dernier et le mouvement 5. La lumière traverse la glace 3 et atteint la cellule 7 au travers des ajourages A1, A2, A3, A4, A5, A6, A7 et A8 formés entre les organes du mouvement et notamment dans la platine P. Ces organes du mouvement occultent une surface comprise entre 65 et 90% de la surface du fond 4. Cela signifie que les ajourages A1, A2, A3, A4, A5, A6, A7 et A8 représentent entre 10 et 35% de cette surface. A titre d'exemple, pour une montre ayant une carrure à cavité circulaire de 2.9 cm de diamètre, soit une surface de fond de l'ordre de 660 mm2, la surface des ajourages est de l'ordre de 146 mm2, soit 22% de la surface de fond. Avec une telle surface effective éclairée, la puissance collectée par la cellule est équivalente à celle collectée par une cellule de 2.9 cm de diamètre placée sous un cadran ayant une transmission de 22%. La puissance ainsi récoltée par exemple par une cellule solaire en silicium amorphe réalisée par dépositions physiques et chimiques (PVD, CVD) sur substrats rigides ou flexibles est en moyenne de 4.4µW sur une année. Cette puissance est nettement supérieure à la consommation d'un mouvement à quartz à 2 aiguilles qui est typiquement de 0.3µW. Il est à noter que, selon les besoins, il est possible d'augmenter la surface effective éclairée en réalisant certains éléments du mouvement tels que les ponts et rouages en matière transparente ou translucide. Il est ainsi possible d'augmenter la surface effective éclairée jusqu'à 35% correspondant à une puissance moyenne annuelle collectée de 7µW. D'autres technologies de cellules solaires peuvent être utilisées comme par exemple des cellules utilisant: le silicium cristallin, le silicium à hétérojonctions, le CuInGaSe, le CuInSe, le CdTe, l'AsGa, ou encore des matériaux organiques. La technologie AsGa par exemple pourrait fournir pour les mêmes 146mm2 de surface exposée une puissance moyenne annuelle de 16.8µW. De plus, on notera que les cellules solaires peuvent être recouvertes de couches additionnelles, par exemple une couche de décor d'un matériau semi transparent pour leur conférer une esthétique particulière pouvant s'accorder aux pièces du mouvement comme, par exemple, un aspect doré. La perte de transmission résultant de l'addition de ces couches pourrait être compensée par une technologie de cellules solaires à plus haut rendement typiquement en utilisant des cellules solaires à base de CuInGaSe ou de AsGa.According to a first embodiment illustrated in Figures 1 and 2 , the photovoltaic cell 7 is arranged on the bottom 4 of the watch between the latter and the movement 5. The light passes through the lens 3 and reaches the cell 7 through the perforations A 1 , A 2 , A 3 , A 4 , A 5 , A 6 , A 7 and A 8 formed between the members of the movement and in particular in the plate P. These movement members obscure an area of between 65 and 90% of the surface of the bottom 4. This means that the apertures A 1 , A 2 , A 3 , A 4 , A 5 , A 6 , A 7 and A 8 represent between 10 and 35% of this area. By way of example, for a watch having a middle with a circular cavity of 2.9 cm in diameter, ie a bottom surface of the order of 660 mm 2 , the surface of the cut-outs is of the order of 146 mm 2 , ie 22% of the bottom area. With such an illuminated effective surface, the power collected by the cell is equivalent to that collected by a cell of 2.9 cm diameter placed under a dial having a transmission of 22%. The power thus harvested for example by an amorphous silicon solar cell made by physical and chemical depositions (PVD, CVD) on rigid or flexible substrates is on average 4.4μW over one year. This power is clearly greater than the consumption of a 2-needle quartz movement which is typically 0.3μW. It should be noted that, as needed, it is possible to increase the effective illuminated area by making certain elements of the movement such as bridges and wheels made of transparent or translucent material. It is thus possible to increase the illuminated effective area up to 35% corresponding to an average annual power collected of 7μW. Other solar cell technologies can be used, for example cells using: crystalline silicon, heterojunction silicon, CuInGaSe, CuInSe, CdTe, AsGa, or organic materials. The AsGa technology for example could provide for the same 146mm 2 of exposed surface an average annual power of 16.8μW. In addition, it should be noted that the solar cells may be covered with additional layers, for example a decorative layer of a semi-transparent material to give them a particular aesthetic that can match the movement parts such as, for example, a golden appearance . The loss of transmission resulting from the addition of these layers could be offset by higher efficiency solar cell technology typically using CuInGaSe or AsGa-based solar cells.

De préférence, une seule cellule solaire est disposée sur le fond 4 et couvre l'ensemble du fond ou une partie particulièrement bien éclairée du fond. Il est cependant également envisageable de placer plusieurs cellules individuelles connectées entre elles sur le fond 4 avec chacune des cellules agencée en regard d'un ajourage. Dans le cas où les cellules sont connectées en série pour obtenir une tension de sortie plus élevée, il est préférable que la surface de chacune des cellules soit similaire pour éviter une limitation du courant imposée par la cellule ayant la surface exposée la plus petite. En connectant les cellules en parallèle, on évite la limitation de courant due à la surface mais la tension de sortie est plus faible. La connexion électrique des fils est réalisée par exemple par brasage avec un alliage approprié (étain ou autre), par thermo compression, assistée ou non, ou par ultrasons.Preferably, a single solar cell is disposed on the bottom 4 and covers the entire bottom or a particularly well-lit part of the bottom. However, it is also possible to place several individual cells connected to each other on the bottom 4 with each of the cells arranged opposite an ajourage. In the case where the cells are connected in series to obtain a higher output voltage, it is preferable that the surface of each of the cells is similar to avoid a limitation of the current imposed by the cell having the smallest exposed surface. By connecting the cells in parallel, the current limitation due to the surface is avoided, but the output voltage is lower. The electrical connection of the son is made for example by brazing with a suitable alloy (tin or other), by thermo compression, assisted or not, or by ultrasound.

Selon un second mode de réalisation illustré aux figures 3 et 4, une cellule photovoltaïque 7 est placée sur un organe exposé à la vue, entre ce dernier et la glace 3. De cette manière, la lumière traverse la glace et atteint directement la cellule photovoltaïque 7. La cellule est préférentiellement placée sur un organe fixe du mouvement pour maintenir visibles au moins partiellement les organes mobiles qui font l'attrait de la montre squelette. Par exemple, la cellule 7 peut être placée sur un pont 8 comme montré à la figure 3. Elle peut également être placée sur le circuit intégré 6 du mouvement à quartz, comme montré à la figure 4, ou de la fonction électronique à alimenter dans le cas d'une variante non représentée d'un mouvement mécanique équipé d'un module électronique complémentaire. Dans une variante la cellule 7 peut être placée alternativement ou aussi sur le circuit imprimé CI portant le circuit intégré 6. Une cellule peut être à cheval sur plusieurs organes ou plusieurs cellules peuvent être disposées sur les organes à condition que chaque cellule ait une surface exposée similaire pour à nouveau éviter la limitation de courant imposée par la plus petite cellule. Dans ce mode de réalisation, on vise une surface effective éclairée comprise entre 8 et 27 % de la surface totale visible à travers la glace, soit une puissance moyenne récoltée par année comprise entre 1.6 et 5.4 µW pour du silicium amorphe et entre 6.1 et 20.6 µW pour de l'AsGa.According to a second embodiment illustrated in figures 3 and 4 , a photovoltaic cell 7 is placed on a member exposed to the view, between the latter and the ice 3. In this way, the light passes through the ice and directly reaches the photovoltaic cell 7. The cell is preferably placed on a fixed member of the movement to keep visible at least partially the moving parts that make the skeleton watch attractive. For example, the cell 7 can be placed on a bridge 8 as shown in FIG. figure 3 . It can also be placed on the integrated circuit 6 of the quartz movement, as shown in FIG. figure 4 , or the electronic function to be powered in the case of a variant not shown of a mechanical movement equipped with a complementary electronic module. In a variant, the cell 7 may be placed alternately or alternatively on the printed circuit CI carrying the integrated circuit 6. A cell may be straddling several members or several cells may be arranged on the members provided that each cell has an exposed surface. similar to again avoid the limitation of current imposed by the smallest cell. In this embodiment, an illuminated effective area of between 8 and 27% of the total surface area visible through the ice is targeted, ie an average power harvested per year of between 1.6 and 5.4 μW for amorphous silicon and between 6.1 and 20.6 μW for AsGa.

La présente invention n'exclut pas que les deux modes de réalisation soient combinés, c.à.d. que des cellules soient positionnées sur le fond et sur des organes visibles à travers la glace.The present invention does not exclude that the two embodiments are combined, i.e. that cells are positioned on the bottom and on visible organs through the ice.

L'assemblage de la cellule au boîtier peut s'effectuer de manière très simple sans devoir réaliser une structure portant la cellule. Par exemple, la cellule 7 peut être collée ou clipsée sur le fond 4 ou sur un organe suivant le mode de réalisation choisi. Il n'est pas nécessaire de ménager un logement spécifique qui modifierait les opérations d'étampage lors de la fabrication du boîtier. Au besoin, il suffit de surélever le mouvement 5 de l'épaisseur de la cellule dans le cas où la cellule est positionnée sur le fond du boîtier. Ce type de montage permet en outre de mieux protéger la cellule qui selon la technologie photovoltaïque choisie peut être intrinsèquement fragile comme, par exemple, dans le cas d'un substrat en verre.The assembly of the cell to the housing can be done in a very simple manner without having to make a structure carrying the cell. For example, the cell 7 may be glued or clipped on the bottom 4 or on an organ according to the chosen embodiment. It is not necessary to provide a specific housing that would change the stamping operations during the manufacture of the housing. If necessary, it is sufficient to raise the movement 5 of the thickness of the cell in the case where the cell is positioned on the bottom of the housing. This type of assembly also makes it possible to better protect the cell which according to the chosen photovoltaic technology may be intrinsically fragile, for example in the case of a glass substrate.

Pour stocker l'énergie électrique produite, le circuit intégré est de préférence associé à un condensateur de stockage ou une batterie rechargeable (non représenté). La connexion électrique entre la ou les cellule(s) et le circuit imprimé peut être réalisée par deux fils ou par des contacts ressorts disposés sous la carte de circuit imprimé CI portant notamment le circuit intégré et le condensateur.To store the generated electrical energy, the integrated circuit is preferably associated with a storage capacitor or a rechargeable battery (not shown). The electrical connection between the cell (s) and the printed circuit may be carried out by two wires or by spring contacts arranged under the printed circuit board CI including the integrated circuit and the capacitor.

L'énergie électrique produite sert à alimenter le mouvement à quartz ou une fonction additionnelle sur une montre mécanique, par exemple, une fonction d'illumination.The electrical energy produced serves to power the quartz movement or an additional function on a mechanical watch, for example, an illumination function.

Claims (15)

  1. Skeleton watch (1) comprising a case provided with a back cover (4) and a crystal (3), and a set of components forming a movement (5) of the skeleton watch (1), said components being arranged inside the case between the back cover (4) and the crystal (3) and being wholly or partially visible through the crystal (3), wherein the skeleton watch (1) comprises at least one solar cell (7), wherein one or more solar cells (7) are disposed between the case back (4) and the set of components, each cell (7) being exposed to light through cutout portions formed between and/or in the components forming said movement, characterized in that the solar cell or cells (7) covers or cover the entire surface of the case back (4).
  2. Skeleton watch (1) according to any of the preceding claims, wherein one or more of the components is made in a transparent or translucent material.
  3. Skeleton watch (1) according to any of the preceding claims, wherein the solar cell or cells (7) are disposed on at least one component visible through the crystal (3).
  4. Skeleton watch (1) according to claim 3, wherein one of the components carrying a solar cell (7) is a fixed structure of the movement.
  5. Skeleton watch (1) according to claim 3 or 4, wherein the component is a bridge (8) or an integrated circuit (6) or a printed circuit (CI).
  6. Skeleton watch (1) according to any of the preceding claims, wherein, in the case of a plurality of solar cells (7), each solar cell (7) has the same surface area exposed to light through the crystal (3).
  7. Skeleton watch (1) according to any of the preceding claims, wherein the light-exposed surface area of the solar cell or cells (7) is comprised between 10 and 35% of the total surface area exposed to light through the crystal (3).
  8. Skeleton watch (1) according to any of the preceding claims, wherein the solar cell or cells (7) are made of amorphous silicon.
  9. Skeleton watch (1) according to any of the preceding claims, wherein each solar cell (7) is assembled by adhesive bonding inside the case.
  10. Skeleton watch (1) according to any of the preceding claims, wherein said movement (5) is a quartz movement or a mechanical movement.
  11. Skeleton watch (1) according to any of the preceding claims when the claim depends on claim 2, characterized in that said solar cells (7) are connected in series.
  12. Skeleton watch (1) according to claim 11, characterized in that said solar cells (7) each have a substantially identical surface area.
  13. Skeleton watch (1) according to any of the preceding claims when the claim depends on claim 2, characterized in that said solar cells (7) are connected in parallel.
  14. Skeleton watch (1) according to any of the preceding claims, characterized in that the solar cells (7) are coated with a semi-transparent decorative layer.
  15. Skeleton watch (1) according to claim 14, characterized in that said solar cells (7) are AsGa-based or CulnGaSe-based solar cells.
EP15200201.0A 2015-12-15 2015-12-15 Solar skeleton watch Active EP3182226B1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP15200201.0A EP3182226B1 (en) 2015-12-15 2015-12-15 Solar skeleton watch
US15/214,634 US10018968B2 (en) 2015-12-15 2016-07-20 Solar skeleton watch
JP2016159460A JP6182653B2 (en) 2015-12-15 2016-08-16 Solar powered skeleton watch
KR1020160110920A KR102069410B1 (en) 2015-12-15 2016-08-30 Solar skeleton watch
CN201610808383.4A CN106886145B (en) 2015-12-15 2016-09-07 Solar energy engraves logical table
KR1020180116471A KR20180109813A (en) 2015-12-15 2018-09-28 Solar skeleton watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15200201.0A EP3182226B1 (en) 2015-12-15 2015-12-15 Solar skeleton watch

Publications (2)

Publication Number Publication Date
EP3182226A1 EP3182226A1 (en) 2017-06-21
EP3182226B1 true EP3182226B1 (en) 2019-02-06

Family

ID=54979423

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EP15200201.0A Active EP3182226B1 (en) 2015-12-15 2015-12-15 Solar skeleton watch

Country Status (5)

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US (1) US10018968B2 (en)
EP (1) EP3182226B1 (en)
JP (1) JP6182653B2 (en)
KR (2) KR102069410B1 (en)
CN (1) CN106886145B (en)

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Also Published As

Publication number Publication date
EP3182226A1 (en) 2017-06-21
US10018968B2 (en) 2018-07-10
US20170168460A1 (en) 2017-06-15
KR20170071402A (en) 2017-06-23
KR102069410B1 (en) 2020-01-22
JP6182653B2 (en) 2017-08-16
CN106886145B (en) 2019-04-23
JP2017111115A (en) 2017-06-22
KR20180109813A (en) 2018-10-08
CN106886145A (en) 2017-06-23

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