WO2014044941A1 - Process for manufacturing a store of electrical energy and corresponding store - Google Patents

Process for manufacturing a store of electrical energy and corresponding store Download PDF

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Publication number
WO2014044941A1
WO2014044941A1 PCT/FR2013/051980 FR2013051980W WO2014044941A1 WO 2014044941 A1 WO2014044941 A1 WO 2014044941A1 FR 2013051980 W FR2013051980 W FR 2013051980W WO 2014044941 A1 WO2014044941 A1 WO 2014044941A1
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WO
WIPO (PCT)
Prior art keywords
cells
electrical energy
flanges
pole
power
Prior art date
Application number
PCT/FR2013/051980
Other languages
French (fr)
Inventor
Fabien Guerin
Guillaume LUCOT
Original Assignee
Valeo Equipements Electriques Moteur
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Valeo Equipements Electriques Moteur filed Critical Valeo Equipements Electriques Moteur
Publication of WO2014044941A1 publication Critical patent/WO2014044941A1/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/10—Multiple hybrid or EDL capacitors, e.g. arrays or modules
    • 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
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/10—Multiple hybrid or EDL capacitors, e.g. arrays or modules
    • H01G11/12—Stacked hybrid or EDL capacitors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/78—Cases; Housings; Encapsulations; Mountings
    • H01G11/82—Fixing or assembling a capacitive element in a housing, e.g. mounting electrodes, current collectors or terminals in containers or encapsulations
    • 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
    • H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
    • 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
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/222—Inorganic material
    • H01M50/224—Metals
    • 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
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

  • the present invention relates to a method of manufacturing electrical energy storage devices such as capacitors or accumulators, and in particular to a manufacturing method of the type of those where at least two cells of the storage unit are arranged in series in an envelope for automotive applications.
  • the invention also relates to such a storer.
  • Motor vehicles with a combustion engine conventionally comprise an on-board electrical network comprising a battery, generally 12 V, intended to supply electrical energy to various equipment, in particular a starter, which is essential for starting the engine. After starting, an alternator coupled to the engine ensures the charging of the battery.
  • This envelope makes it possible to secure and protect the cells, and also allows the dissipation of the heat produced by the charging and discharging cycles of the storage unit.
  • This envelope also supports power terminals for connecting the storer to the power grid of the vehicle or directly to another power equipment.
  • the patent application WO201 1 157629 describes an electrical energy storage device of this type comprising several capacitors of high capacity of the EDLC (Electrochemical Double Layer Capacitor) type, that is to say, electrochemical capacitor. "double layer”), known as ultracapacities.
  • EDLC Electrochemical Double Layer Capacitor
  • polarized ultracapacitors generally have a low operating voltage, of the order of a few volts (2.7 V for standard models); several cells connected in series are therefore necessary to reach the voltages under which the equipment of a vehicle currently operates,
  • ultracapacities are of a model whose height is important compared to the diameter.
  • this single-line arrangement of the cells leads to arranging the power terminals at both ends of the envelope.
  • connection cables of the storage unit described in the patent application WO201 1 157629 are necessarily long, which increases the losses by Joule effect and contributes significantly to a decrease in the efficiency of the power supply system, taking into account the great intensities at stake.
  • the present invention aims to satisfy this need.
  • It relates generally to a method of manufacturing a motor vehicle electrical energy store of the type consisting of:
  • the cells being aligned side by side on at least two parallel rows so that the first and second power terminals are located on the same side of the electrical energy storage unit .
  • the method also comprises the steps of:
  • the manufacturing method according to the invention also comprises:
  • connection bars connect the first and second poles by means of the corresponding connection bars.
  • the storage casing is also advantageously produced in the form of a tank by stamping a sheet.
  • the method of manufacturing an electrical energy store according to the invention further comprises soldering the connection bars by laser.
  • the invention also relates to an electrical energy store of the type comprising:
  • At least two electrical energy storage cells each having a positive pole and a negative pole on two opposite faces;
  • the cells being aligned side by side forming at least two rows of parallel cells in the envelope and the first and second power terminals being located on the same side of the electrical energy storage unit.
  • the cells which have different lengths within predetermined tolerance limits, are held by two flanges which advantageously have at least one zone of flexibility around which at least one articulator is articulated. part of these two flanges secured to one of the rows of cells.
  • these flanges support connecting bars welded to a plurality of copies of said positive pole and said negative pole opposite each of the two flanges.
  • the envelope of the cells is advantageously formed of a pressed sheet metal tank.
  • said first and second power terminals are supported by a terminal block which further supports an electronic module for controlling the cells and forming a lid of the tank.
  • the cells are preferably high capacity capacitors of the EDLC type.
  • Figures 1a, 1b and 1c are three views showing three particular stages of advancement of the method of manufacturing an electrical energy store according to the invention.
  • Figures 2a and 2b show the principle of the compensation of length tolerances of the cells by a displacement of a portion of a flange to allow the welding of a connecting bar.
  • the method according to the invention consists of arranging the cells 2 side by side in at least two rows, as shown in FIG. 1a for an example of ultracapacitor storage unit comprising six 650 F cells distributed in two parallel rows of three cells 2 each.
  • One of the flanges 3, 4 carries two connecting bars 5, 6 welded to one pole 7 of the first of the six cells 2 and the other 6 to the opposite pole 8 of the latter.
  • the other flange 4 also carries another connection bar 9 welded to the positive and negative poles 10, 1 1 of the cells 2 opposite this other flange 4.
  • FIG. 1b shows a second stage of progress of the manufacturing process of the storage unit according to the invention 1 where first 12 and second 13 power terminals of a terminal block 14 have been soldered to the connection bars 5, 6 of the flange 3.
  • Terminal block 14 supports an electronic power module 15 for controlling cells 2, in particular for the purpose of equalizing charges.
  • Connectors 16 for the electrical connections required for these purposes are arranged at each group of two cells 2.
  • Figure 1c shows the storer 1 according to the invention nearing completion.
  • a casing-shaped shell 17 formed by stamping is placed on the assembly formed by the cells 2 held by the flanges 3, 4, and the terminal block 14 supporting the electronic power module 15. .
  • the terminal block 14 closes the pack tightly thanks to an edge 19 having a suitable profile.
  • the odds chain can be evaluated statistically rather than arithmetically.
  • the difference to be considered is then only 1.75 mm.
  • the flange 3 used to set up and maintain the cells 2 would no longer fulfill its role and would even prevent laser welding the connection bar 7 on the pole 6, the latter not being in contact with it. this.
  • the manufacturing method according to the invention therefore also consists in providing the flange 3 with a zone of flexibility 20 in order to allow the displacement of a portion 21 of the flange 3 of way to bring the connection bar 5 on the pole 7, as shown in Figure 2b.
  • the electric energy store 1 thus produced has the advantage of being more compact than the same type of storages known in the state of the art in the automotive field.
  • control electronics 15 are integrated in the storer 1 and protected by the envelope 17.
  • the power terminals 12, 13 on the same side of the storer 1 allow shorter links to the associated equipment.
  • Cells 2 of a different type, in particular batteries, are alternatively advantageously arranged to form a storage unit 1 by the manufacturing method according to the invention.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Electric Double-Layer Capacitors Or The Like (AREA)

Abstract

The process for manufacturing the store (1) of electrical energy according to the invention is of the type of those consisting in arranging, in series, at least two cells (2) for storing electrical energy, each having a positive pole and a negative pole (7, 8, 11) on two opposite faces. According to the process, the cells are aligned side-by-side in at least two parallel rows such that first and second power terminals (12, 13) are located on one and the same side of the electrical energy store. Two flanges (3, 4) are provided to hold the cells (2) and support connecting bars (5, 6, 9). At least one of the flanges (3) comprises a flexible region (20) in order to allow at least one part (21) of the flange to be moved in a direction of the parallel rows of cells.

Description

PROCEDE DE FABRICATION D'UN STOCKEUR D'ENERGIE ELECTRIQUE ET METHOD FOR MANUFACTURING AN ELECTRIC ENERGY STORER AND
STOCKEUR CORRESPONDANT STORER CORRESPONDING
DOMAINE TECHNIQUE DE L'INVENTION. TECHNICAL FIELD OF THE INVENTION
La présente invention se rapporte à un procédé de fabrication de stockeurs d'énergie électrique tels que des condensateurs ou des accumulateurs, et notamment à un procédé de fabrication du type de ceux ou au moins deux cellules du stockeur sont agencées en série dans une enveloppe pour les applications à l'automobile.  The present invention relates to a method of manufacturing electrical energy storage devices such as capacitors or accumulators, and in particular to a manufacturing method of the type of those where at least two cells of the storage unit are arranged in series in an envelope for automotive applications.
L'invention concerne également un tel stockeur.  The invention also relates to such a storer.
ARRIERE PLAN TECHNOLOGIQUE DE L'INVENTION. BACKGROUND ART OF THE INVENTION.
Les véhicules automobiles à moteur thermique comportent classiquement un réseau électrique de bord comprenant une batterie, généralement de 12 V, destiné à alimenter en énergie électrique les divers équipements, notamment un démarreur, indispensable pour assurer le démarrage du moteur thermique. Après le démarrage, un alternateur accouplé au moteur thermique assure la charge de la batterie.  Motor vehicles with a combustion engine conventionally comprise an on-board electrical network comprising a battery, generally 12 V, intended to supply electrical energy to various equipment, in particular a starter, which is essential for starting the engine. After starting, an alternator coupled to the engine ensures the charging of the battery.
De nos jours, des considérations écologiques ont conduit au développement de véhicules automobiles mettant en œuvre des technologies dites "micro-hybrid", "mild-hybrid" ou "full-hybrid" dans lesquelles le stockeur d'énergie récupère de plus l'énergie au freinage, apporte un supplément de puissance et de couple au moteur thermique ou fournit seul l'énergie nécessaire à la propulsion du véhicule.  Nowadays, ecological considerations have led to the development of motor vehicles using so-called "micro-hybrid", "mild-hybrid" or "full-hybrid" technologies in which the energy storeer recovers more energy when braking, provides additional power and torque to the engine or provides only the energy necessary for the propulsion of the vehicle.
Pour satisfaire aux niveaux de puissance et d'énergie requis pour assurer ces nouvelles fonctions, il est le plus souvent nécessaire de créer des stockeurs comprenant plusieurs cellules disposées en série et/ou en parallèle à l'intérieur d'une enveloppe.  To meet the power and energy levels required to perform these new functions, it is most often necessary to create storages comprising several cells arranged in series and / or in parallel inside an envelope.
Cette enveloppe permet de solidariser et de protéger les cellules, et permet également la dissipation de la chaleur produite par les cycles de charge et de décharge du stockeur.  This envelope makes it possible to secure and protect the cells, and also allows the dissipation of the heat produced by the charging and discharging cycles of the storage unit.
Cette enveloppe supporte également des bornes de puissance permettant de relier le stockeur au réseau électrique de puissance du véhicule ou directement à un autre équipement de puissance. La demande de brevet WO201 1 157629 décrit un stockeur d'énergie électrique de ce type comprenant plusieurs condensateurs de grande capacité du type EDLC (acronyme de l'anglais "Electrochemical Double Layer Capacitor", c'est- à-dire "condensateur électrochimique à double couche"), connus sous le nom d'ultracapacités. This envelope also supports power terminals for connecting the storer to the power grid of the vehicle or directly to another power equipment. The patent application WO201 1 157629 describes an electrical energy storage device of this type comprising several capacitors of high capacity of the EDLC (Electrochemical Double Layer Capacitor) type, that is to say, electrochemical capacitor. "double layer"), known as ultracapacities.
Ces ultracapacités polarisées ont généralement une faible tension de service, de l'ordre de quelques volts (2,7 V pour des modèles standard); plusieurs cellules connectées en série sont donc nécessaires pour atteindre les tensions sous lesquelles fonctionnent couramment les équipements d'un véhicule,  These polarized ultracapacitors generally have a low operating voltage, of the order of a few volts (2.7 V for standard models); several cells connected in series are therefore necessary to reach the voltages under which the equipment of a vehicle currently operates,
Elles se présentent le plus souvent sous la forme générale d'un cylindre allongé, avec un pôle positif et un pôle négatif à chaque extrémité. Quelques fois ces ultracapacités sont d'un modèle dont la hauteur est importante par rapport au diamètre.  They are most often in the general form of an elongated cylinder, with a positive pole and a negative pole at each end. Sometimes these ultracapacities are of a model whose height is important compared to the diameter.
Il en résulte qu'un stockeur comme celui décrit dans la demande de brevet WO201 1 157629, où toutes les cellules sont alignées en une seule rangée, peut atteindre une longueur importante.  As a result, a storer like the one described in patent application WO20117676, where all the cells are aligned in a single row, can reach a significant length.
Outre un facteur de forme qui peut être incompatible avec l'espace disponible dans le véhicule, cette disposition en une seule ligne des cellules conduit à agencer les bornes de puissance aux deux extrémités de l'enveloppe.  In addition to a form factor that may be incompatible with the space available in the vehicle, this single-line arrangement of the cells leads to arranging the power terminals at both ends of the envelope.
II s'ensuit que les câbles de connexion du stockeur décrit dans la demande de brevet WO201 1 157629 sont nécessairement longs, ce qui augmente les pertes par effet Joule et contribue significativement à une diminution du rendement du système d'alimentation électrique, compte tenu des grandes intensités mise en jeu.  It follows that the connection cables of the storage unit described in the patent application WO201 1 157629 are necessarily long, which increases the losses by Joule effect and contributes significantly to a decrease in the efficiency of the power supply system, taking into account the great intensities at stake.
Il existe donc un besoin pour un procédé de fabrication d'un stockeur d'énergie électrique plus compact qui ne présenterait pas ces inconvénients.  There is therefore a need for a method of manufacturing a more compact electrical energy store that does not have these disadvantages.
DESCRIPTION GENERALE DE L'INVENTION. GENERAL DESCRIPTION OF THE INVENTION
La présente invention vise à satisfaire ce besoin.  The present invention aims to satisfy this need.
Elle concerne, de manière générale, un procédé de fabrication d'un stockeur d'énergie électrique de véhicule automobile du type de ceux consistant à:  It relates generally to a method of manufacturing a motor vehicle electrical energy store of the type consisting of:
- agencer en série au moins deux cellules de stockage d'énergie électrique présentant chacune un pôle positif et un pôle négatif sur deux faces opposées;  - Series arranging at least two electrical energy storage cells each having a positive pole and a negative pole on two opposite sides;
- relier un premier pôle de la première de ces cellules à une première borne de puissance et un second pôle opposé de la dernière de ces cellules à une seconde borne de puissance; - produire une enveloppe; connecting a first pole of the first of these cells to a first power terminal and a second opposite pole of the last of these cells to a second power terminal; - produce an envelope;
- agencer ces cellules à l'intérieur de l'enveloppe, les cellules étant alignées côte à côte sur au moins deux rangées parallèles de telle sorte que les première et seconde bornes de puissance sont situées d'un même côté du stockeur d'énergie électrique.  arranging these cells inside the envelope, the cells being aligned side by side on at least two parallel rows so that the first and second power terminals are located on the same side of the electrical energy storage unit .
Conformément à l'invention, le procédé comprend également les étapes de : According to the invention, the method also comprises the steps of:
- produire deux flasques destinés à maintenir les cellules et à supporter des barres de connexion; - produce two flanges intended to hold the cells and to support connecting bars;
- munir au moins l'un des deux flasques d'au moins une zone de souplesse destinée à permettre le déplacement d'au moins une partie des deux flasques selon une direction des rangées;  - Provide at least one of the two flanges of at least one flexible zone intended to allow the displacement of at least a portion of the two flanges in a row direction;
- souder aux barres de connexion une pluralité d'exemplaires du pôle positif et du pôle négatif en regard de chacun des deux flasques en déplaçant au moins la partie mentionnée ci-dessus de manière à compenser des tolérances en longueur des cellules.  - Solder to the connecting bars a plurality of copies of the positive pole and the negative pole facing each of the two flanges by moving at least the above-mentioned portion so as to compensate tolerances in length of the cells.
Selon un mode de réalisation particulier, le procédé de fabrication selon l'invention consiste en outre à:  According to a particular embodiment, the manufacturing method according to the invention also comprises:
- produire un bornier comportant les première et seconde bornes de puissance; producing a terminal block comprising the first and second power terminals;
- relier les premier et second pôles au moyen des barres de connexion correspondantes. - connect the first and second poles by means of the corresponding connection bars.
Dans le procédé de fabrication d'un stockeur d'énergie électrique selon l'invention, on produit en outre avantageusement l'enveloppe du stockeur sous la forme d'une cuve par emboutissage d'une tôle.  In the method of manufacturing an electrical energy storage unit according to the invention, the storage casing is also advantageously produced in the form of a tank by stamping a sheet.
Selon un autre mode de réalisation particulier, le procédé de fabrication d'un stockeur d'énergie électrique selon l'invention consiste en outre à souder les barres de connexion par laser.  According to another particular embodiment, the method of manufacturing an electrical energy store according to the invention further comprises soldering the connection bars by laser.
L'invention concerne également un stockeur d'énergie électrique du type de ceux comprenant:  The invention also relates to an electrical energy store of the type comprising:
- au moins deux cellules de stockage d'énergie électrique présentant chacune un pôle positif et un pôle négatif sur deux faces opposées;  at least two electrical energy storage cells each having a positive pole and a negative pole on two opposite faces;
- une première borne de puissance reliée à un premier pôle de la première des cellules et une seconde borne de puissance reliée à un second pôle opposé de la dernière des cellules;  a first power terminal connected to a first pole of the first of the cells and a second power terminal connected to a second opposite pole of the last of the cells;
- une enveloppe contenant ces cellules ; - les cellules étant alignées côte à côte en formant au moins deux rangées de cellules parallèles dans l'enveloppe et les première et seconde bornes de puissance étant situées d'un même côté du stockeur d'énergie électrique. an envelope containing these cells; the cells being aligned side by side forming at least two rows of parallel cells in the envelope and the first and second power terminals being located on the same side of the electrical energy storage unit.
Conformément à l'invention, dans le stockeur d'énergie électrique, les cellules, qui présentent différentes longueurs dans des limites de tolérances prédéterminées, sont maintenues par deux flasques présentant fort avantageusement au moins une zone de souplesse autour de laquelle est articulée au moins une partie de ces deux flasques solidaire d'une des rangées de cellules.  According to the invention, in the electrical energy storage unit, the cells, which have different lengths within predetermined tolerance limits, are held by two flanges which advantageously have at least one zone of flexibility around which at least one articulator is articulated. part of these two flanges secured to one of the rows of cells.
Selon une forme particulière de réalisation, ces flasques supportent des barres de connexion soudées à une pluralité d'exemplaires dudit pôle positif et dudit pôle négatif en regard de chacun des deux flasques.  According to a particular embodiment, these flanges support connecting bars welded to a plurality of copies of said positive pole and said negative pole opposite each of the two flanges.
Dans le stockeur d'énergie électrique selon l'invention, l'enveloppe des cellules est formée avantageusement d'une cuve en tôle emboutie.  In the electrical energy storage unit according to the invention, the envelope of the cells is advantageously formed of a pressed sheet metal tank.
Selon une forme particulière de réalisation, lesdites première et seconde bornes de puissance sont supportées par un bornier supportant de plus un module électronique de puissance de contrôle des cellules et formant couvercle de la cuve.  According to a particular embodiment, said first and second power terminals are supported by a terminal block which further supports an electronic module for controlling the cells and forming a lid of the tank.
Dans le stockeur d'énergie électrique selon l'invention, les cellules sont préférentiellement des condensateurs de grande capacité de type EDLC.  In the electrical energy store according to the invention, the cells are preferably high capacity capacitors of the EDLC type.
Ces quelques spécifications essentielles auront rendu évidents pour l'homme de métier les avantages apportés par le procédé de fabrication d'un stockeur d'énergie électrique selon l'invention, et le stockeur ainsi fabriqué.  These few essential specifications will have made obvious to the skilled person the advantages provided by the method of manufacturing an electrical energy storage device according to the invention, and the storer thus manufactured.
Les spécifications détaillées de l'invention sont données dans la description qui suit en liaison avec les dessins ci-annexés. Il est à noter que ces dessins n'ont d'autre but que d'illustrer le texte de la description et ne constituent en aucune sorte une limitation de la portée de l'invention.  The detailed specifications of the invention are given in the following description in conjunction with the accompanying drawings. It should be noted that these drawings have no other purpose than to illustrate the text of the description and do not constitute in any way a limitation of the scope of the invention.
BREVE DESCRIPTION DES DESSINS. BRIEF DESCRIPTION OF THE DRAWINGS
Les Figures 1a, 1 b et 1c sont trois vues montrant trois stades particuliers d'avancement du procédé de fabrication d'un stockeur d'énergie électrique selon l'invention.  Figures 1a, 1b and 1c are three views showing three particular stages of advancement of the method of manufacturing an electrical energy store according to the invention.
Les Figures 2a et 2b montrent le principe de la compensation des tolérances en longueur des cellules par un déplacement d'une partie d'un flasque afin de permettre la soudure d'une barre de connexion. DESCRIPTION DU MODE DE REALISATION PREFERE DE L'INVENTION. Figures 2a and 2b show the principle of the compensation of length tolerances of the cells by a displacement of a portion of a flange to allow the welding of a connecting bar. DESCRIPTION OF THE PREFERRED EMBODIMENT OF THE INVENTION
Dans le but de rendre les stockeurs 1 du type concerné par l'invention plus compacts, le procédé selon l'invention consiste à agencer les cellules 2 côte à côte sur au moins deux rangées, comme le montre bien la Figure 1a pour un exemple de stockeur à ultracapacités comprenant six cellules de 650 F réparties sur deux rangées parallèles de trois cellules 2 chacune.  In order to make the storage units 1 of the type concerned by the invention more compact, the method according to the invention consists of arranging the cells 2 side by side in at least two rows, as shown in FIG. 1a for an example of ultracapacitor storage unit comprising six 650 F cells distributed in two parallel rows of three cells 2 each.
Dans un premier stade d'avancement du procédé de fabrication montré sur la Figure 1a, les cellules 2 ont déjà été assemblées entre deux flasques 3, 4.  In a first stage of the manufacturing process shown in FIG. 1a, the cells 2 have already been assembled between two flanges 3, 4.
L'un 3 des flasques 3, 4 porte deux barres de connexion 5, 6 soudées l'une 5 sur un pôle 7 de la première des six cellules 2 et l'autre 6 sur le pôle opposé 8 de la dernière.  One of the flanges 3, 4 carries two connecting bars 5, 6 welded to one pole 7 of the first of the six cells 2 and the other 6 to the opposite pole 8 of the latter.
L'autre flasque 4 porte également une autre barre de connexion 9 soudée sur les pôles positif et négatif 10, 1 1 des cellules 2 en regard de cet autre flasque 4.  The other flange 4 also carries another connection bar 9 welded to the positive and negative poles 10, 1 1 of the cells 2 opposite this other flange 4.
La Figure 1 b montre un deuxième stade d'avancement du procédé de fabrication du stockeur selon l'invention 1 où des première 12 et seconde 13 bornes de puissance d'un bornier 14 ont été soudées sur les barres de connexion 5, 6 du flasque 3.  FIG. 1b shows a second stage of progress of the manufacturing process of the storage unit according to the invention 1 where first 12 and second 13 power terminals of a terminal block 14 have been soldered to the connection bars 5, 6 of the flange 3.
Le bornier 14 supporte un module électronique de puissance 15 de contrôle des cellules 2, notamment aux fins d'égalisation des charges.  Terminal block 14 supports an electronic power module 15 for controlling cells 2, in particular for the purpose of equalizing charges.
Des connecteurs 16 pour les liaisons électriques nécessaires à ces fins sont agencés au niveau de chaque groupe de deux cellules 2.  Connectors 16 for the electrical connections required for these purposes are arranged at each group of two cells 2.
La Figure 1c montre le stockeur 1 selon l'invention en voie d'achèvement. A ce troisième stade d'avancement, une enveloppe 17 en forme de cuve, formée par emboutissage est placée 18 sur l'ensemble formé par les cellules 2 maintenues par les flasques 3, 4, et le bornier 14 supportant le module électronique de puissance 15.  Figure 1c shows the storer 1 according to the invention nearing completion. At this third stage of advancement, a casing-shaped shell 17 formed by stamping is placed on the assembly formed by the cells 2 held by the flanges 3, 4, and the terminal block 14 supporting the electronic power module 15. .
Le bornier 14 assure la fermeture du pack de manière étanche grâce à un bord 19 présentant un profil adapté.  The terminal block 14 closes the pack tightly thanks to an edge 19 having a suitable profile.
La complétion du premier stade d'avancement du procédé selon l'invention comporte cependant des difficultés car les cellules 2 ont une tolérance en longueur de plus ou moins 0,55 mm.  The completion of the first stage of the process according to the invention, however, has difficulties because the cells 2 have a tolerance in length of plus or minus 0.55 mm.
Ainsi, dans le cas de l'assemblage de trois cellules 2 en ligne, la longueur totale d'une rangée L1 , L2 peut varier de plus ou moins 1 ,65 mm. Comnne le montre bien la Figure 2a, cela peut se traduire par un décalage Δ = L2 - L1 maximum de 3,3 mm entre le pôle 7 de la première des six cellules 2 et le pôle opposé 8 de la dernière dans la direction des rangées. Thus, in the case of the assembly of three cells 2 in line, the total length of a row L1, L2 may vary by plus or minus 1.65 mm. As can be seen in FIG. 2a, this can result in a maximum offset Δ = L2 - L1 of 3.3 mm between the pole 7 of the first of the six cells 2 and the opposite pole 8 of the latter in the row direction. .
Compte tenu du nombre de cotes en jeu (18 dans cet exemple), la chaîne de cotes peut être évaluée de façon statistique plutôt que de façon arithmétique. L'écart à considérer n'est plus alors que de 1 ,75 mm.  Given the number of odds involved (18 in this example), the odds chain can be evaluated statistically rather than arithmetically. The difference to be considered is then only 1.75 mm.
Malgré tout, le flasque 3 servant à mettre en place et maintenir les cellules 2 ne remplirait plus son rôle et empêcherait même de souder par laser la barre de connexion 7 sur le pôle 6, celle-ci n'étant pas en contact avec celui-ci.  Despite everything, the flange 3 used to set up and maintain the cells 2 would no longer fulfill its role and would even prevent laser welding the connection bar 7 on the pole 6, the latter not being in contact with it. this.
De manière à compenser les tolérances en longueurs des cellules 2, le procédé de fabrication selon l'invention consiste donc en outre à munir le flasque 3 d'une zone de souplesse 20 afin de permettre le déplacement d'une partie 21 du flasque 3 de façon à pouvoir amener la barre de connexion 5 sur le pôle 7, comme le montre la Figure 2b.  In order to compensate for the tolerances in lengths of the cells 2, the manufacturing method according to the invention therefore also consists in providing the flange 3 with a zone of flexibility 20 in order to allow the displacement of a portion 21 of the flange 3 of way to bring the connection bar 5 on the pole 7, as shown in Figure 2b.
Le stockeur d'énergie électrique 1 ainsi réalisé présente l'avantage d'être plus compact que les stockeurs de même type connus de l'état de la technique dans le domaine de l'automobile.  The electric energy store 1 thus produced has the advantage of being more compact than the same type of storages known in the state of the art in the automotive field.
Un autre avantage est que l'électronique de contrôle 15 est intégrée dans le stockeur 1 et protégée par l'enveloppe 17.  Another advantage is that the control electronics 15 are integrated in the storer 1 and protected by the envelope 17.
Les bornes de puissance 12, 13 d'un même coté du stockeur 1 permettent des liaisons plus courtes vers les équipements associés.  The power terminals 12, 13 on the same side of the storer 1 allow shorter links to the associated equipment.
Comme il va de soi l'invention ne se limite pas au seul mode d'exécution préférentiel décrit ci-dessus. Une description analogue pourrait porter sur la fabrication d'un stockeur 1 à ultracapacités comportant un nombre de cellules 2 supérieur à six organisées selon un nombre de rangées supérieur à deux.  It goes without saying that the invention is not limited to the single preferred embodiment described above. A similar description could relate to the manufacture of an ultracapacitor storage unit 1 having a number of cells 2 greater than six organized in a number of rows greater than two.
Des cellules 2 d'un type différent, notamment des batteries, sont alternativement avantageusement agencées pour constituer un stockeur 1 par le procédé de fabrication selon l'invention.  Cells 2 of a different type, in particular batteries, are alternatively advantageously arranged to form a storage unit 1 by the manufacturing method according to the invention.
L'invention embrasse donc toutes les variantes possibles de réalisation dans la mesure où ces variantes restent dans le cadre défini par les revendications ci-après.  The invention therefore embraces all the possible variants of implementation insofar as these variants remain within the scope defined by the claims below.

Claims

REVENDICATIONS
1) Procédé de fabrication d'un stockeur d'énergie électrique (1 ) de véhicule automobile du type de ceux consistant à 1) A method of manufacturing a motor vehicle electrical energy store (1) of the type consisting of
- agencer en série au moins deux cellules de stockage d'énergie électrique (2) présentant chacune un pôle positif et un pôle négatif (7, 8, 10, 1 1 ) sur deux faces opposées; at least two electrical energy storage cells (2) each having a positive pole and a negative pole (7, 8, 10, 1 1) on two opposite faces;
- relier un premier pôle (7) de la première desdites au moins deux cellules (2) à une première borne de puissance (12) et un second pôle opposé (8) de la dernière desdites au moins deux cellules (2) à une seconde borne de puissance (13);  connecting a first pole (7) of the first of said at least two cells (2) to a first power terminal (12) and a second opposite pole (8) of the last of said at least two cells (2) to a second power terminal (13);
- produire une enveloppe (17);  - producing an envelope (17);
- agencer lesdites au moins cellules (2) à l'intérieur de ladite enveloppe (17), lesdites cellules (2) étant alignées côte à côte sur au moins deux rangées parallèles de telle sorte que lesdites première et seconde bornes de puissance (12, 13) sont situées d'un même côté dudit stockeur d'énergie électrique (1 ) ;  arranging said at least one cells (2) within said envelope (17), said cells (2) being aligned side by side on at least two parallel rows so that said first and second power terminals (12, 13) are located on the same side of said electrical energy storage (1);
caractérisé en ce qu'il consiste en outre à: characterized by further comprising:
- produire deux flasques (3, 4) destinés à maintenir lesdites au moins deux cellules (2) et à supporter des barres de connexion (5, 6, 9);  producing two flanges (3, 4) for holding said at least two cells (2) and for supporting connecting bars (5, 6, 9);
- munir au moins l'un desdits deux flasques (3, 4) d'au moins une zone de souplesse (20) destinée à permettre le déplacement d'au moins une partie (21 ) desdits deux flasques (3, 4) selon une direction desdites rangées;  - providing at least one of said two flanges (3, 4) with at least one zone of flexibility (20) intended to allow the displacement of at least one part (21) of said two flanges (3, 4) according to a direction of said rows;
- souder auxdites barres de connexion (5, 6, 9) une pluralité d'exemplaires dudit pôle positif et dudit pôle négatif (7, 8, 10, 1 1 ) en regard de chacun desdits deux flasques (3, 4) en déplaçant ladite au moins une partie (21 ) de manière à compenser des tolérances en longueur desdites au moins deux cellules (2).  soldering to said connecting bars (5, 6, 9) a plurality of copies of said positive pole and said negative pole (7, 8, 10, 1 1) facing each of said two flanges (3, 4) by moving said at least one portion (21) to compensate for tolerances in length of said at least two cells (2).
2) Procédé de fabrication d'un stockeur d'énergie électrique (1 ) de véhicule automobile selon la revendication 1 , caractérisé en ce qu'il consiste en outre à: 2) A method of manufacturing an electrical energy store (1) of a motor vehicle according to claim 1, characterized in that it further comprises:
- produire un bornier (14) comportant lesdites première et seconde bornes de puissance (12, 13);  - producing a terminal block (14) having said first and second power terminals (12, 13);
- relier lesdits premier et second pôles (7, 8) au moyen desdites barres de connexion (5, 6) correspondantes. 3) Procédé de fabrication d'un stockeur d'énergie électrique (1 ) de véhicule automobile selon la revendication 1 ou 2 précédente, caractérisé en ce qu'il consiste en outre à produire ladite enveloppe (17) sous la forme d'une cuve par emboutissage d'une tôle. connecting said first and second poles (7, 8) by means of said corresponding connection bars (5, 6). 3) A method of manufacturing an electrical energy store (1) of a motor vehicle according to claim 1 or 2 above, characterized in that it further comprises producing said casing (17) in the form of a tank by stamping a sheet.
4) Procédé de fabrication d'un stockeur d'énergie électrique (1 ) de véhicule automobile selon la revendication 1 ou 2 précédente, caractérisé en ce qu'il consiste en outre à souder lesdites barres de connexion (5, 6, 9) par laser. 4) A method of manufacturing an electrical energy store (1) of a motor vehicle according to claim 1 or 2 above, characterized in that it further comprises soldering said connection bars (5, 6, 9) by laser.
5) Stockeur d'énergie électrique (1 ) du type de ceux comprenant: 5) storing electrical energy (1) of the type comprising:
- au moins deux cellules de stockage d'énergie électrique (2) présentant chacune un pôle positif et un pôle négatif (7, 8, 10, 1 1 ) sur deux faces opposées;  at least two electrical energy storage cells (2) each having a positive pole and a negative pole (7, 8, 10, 1 1) on two opposite faces;
- une première borne de puissance (12) reliée à un premier pôle (7) de la première desdites au moins deux cellules (2) et une seconde borne de puissance (13) reliée à un second pôle opposé (8) de la dernière desdites au moins deux cellules (2); a first power terminal (12) connected to a first pole (7) of the first of said at least two cells (2) and a second power terminal (13) connected to a second opposite pole (8) of the last one of said at least two cells (2);
- une enveloppe (17) contenant lesdites au moins deux cellules (2); an envelope (17) containing said at least two cells (2);
- lesdites au moins deux cellules (2) étant alignées côte à côte en formant au moins deux rangées de cellules parallèles dans ladite enveloppe (17) et lesdites première et seconde bornes de puissance (12, 13) étant situées d'un même côté dudit stockeur d'énergie électrique (1 ) ;  said at least two cells (2) being aligned side by side forming at least two rows of parallel cells in said envelope (17) and said first and second power terminals (12, 13) being located on the same side of said electric energy store (1);
caractérisé en ce que lesdites au moins deux cellules (2) présentant différentes longueurs dans des limites de tolérances prédéterminées sont maintenues par deux flasques (3, 4) présentant au moins une zone de souplesse (20) autour de laquelle est articulée au moins une partie (21 ) desdits deux flasques (3, 4) solidaire d'une desdites rangées de cellules (2). characterized in that said at least two cells (2) having different lengths within predetermined tolerance limits are held by two flanges (3, 4) having at least one zone of flexibility (20) around which at least a portion is articulated (21) said two flanges (3, 4) integral with one of said rows of cells (2).
6) Stockeur d'énergie électrique (1 ) selon la revendication 5, caractérisé en ce que lesdits flasques (3, 4) supportent des barres de connexion (5, 6, 9) soudées à une pluralité d'exemplaires dudit pôle positif et dudit pôle négatif (7, 8, 10, 1 1 ) en regard de chacun desdits deux flasques (3, 4). 6) electrical energy store (1) according to claim 5, characterized in that said flanges (3, 4) support connection bars (5, 6, 9) welded to a plurality of copies of said positive pole and said negative pole (7, 8, 10, 1 1) facing each of said two flanges (3, 4).
7) Stockeur d'énergie électrique (1 ) selon la revendication 5 ou 6 précédente, caractérisé en ce que ladite enveloppe (17) est formée d'une cuve en tôle emboutie. 8) Stockeur d'énergie électrique (1 ) selon la revendication 7, caractérisé en ce que lesdites première et seconde bornes de puissance (12, 13) sont supportées par un bornier (14) supportant de plus un module électronique de puissance (15) de contrôle desdites cellules (2) et formant couvercle de ladite cuve (17). 7) storing power (1) according to claim 5 or 6 preceding, characterized in that said casing (17) is formed of a pressed sheet metal tank. 8) storing power (1) according to claim 7, characterized in that said first and second power terminals (12, 13) are supported by a terminal block (14) further supporting an electronic power module (15) controlling said cells (2) and forming a lid of said tank (17).
9) Stockeur d'énergie électrique (1 ) selon l'une quelconque des revendications 5 à 8 précédentes, caractérisé en ce que lesdites au moins deux cellules (2) sont des condensateurs de grande capacité de type EDLC. 9) electrical energy storage (1) according to any one of claims 5 to 8 above, characterized in that said at least two cells (2) are capacitors of high capacity type EDLC.
PCT/FR2013/051980 2012-09-24 2013-08-28 Process for manufacturing a store of electrical energy and corresponding store WO2014044941A1 (en)

Applications Claiming Priority (2)

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FR1258911A FR2996048B1 (en) 2012-09-24 2012-09-24 METHOD FOR MANUFACTURING ELECTRIC ENERGY STORER AND CORRESPONDING STORER
FR1258911 2012-09-24

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CN117832707B (en) * 2024-03-05 2024-05-28 厦门海辰储能科技股份有限公司 Energy storage device and electric equipment

Citations (4)

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EP1843361A1 (en) * 2005-06-17 2007-10-10 Matsushita Electric Industrial Co., Ltd. Condenser device
US20090061301A1 (en) * 2007-08-31 2009-03-05 Micropower Electronics, Inc. Spacers for Fixing Battery Cells Within a Battery Package Casing and Associated Systems and Methods
DE102010041538A1 (en) * 2010-09-28 2012-03-29 Siemens Aktiengesellschaft Device for energy storage for e.g. tram, has storage cells designed as cylindrical double-layer capacitors with electrical connection poles, coaxially arranged behind each other and electrically connected with each other in series
EP2461394A1 (en) * 2010-12-06 2012-06-06 Valeo Equipements Electriques Moteur Energy-storage flange and method for manufacturing same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1843361A1 (en) * 2005-06-17 2007-10-10 Matsushita Electric Industrial Co., Ltd. Condenser device
US20090061301A1 (en) * 2007-08-31 2009-03-05 Micropower Electronics, Inc. Spacers for Fixing Battery Cells Within a Battery Package Casing and Associated Systems and Methods
DE102010041538A1 (en) * 2010-09-28 2012-03-29 Siemens Aktiengesellschaft Device for energy storage for e.g. tram, has storage cells designed as cylindrical double-layer capacitors with electrical connection poles, coaxially arranged behind each other and electrically connected with each other in series
EP2461394A1 (en) * 2010-12-06 2012-06-06 Valeo Equipements Electriques Moteur Energy-storage flange and method for manufacturing same

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