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FR2766621A1 - Ventilation passage for cap of battery cell - Google Patents

Ventilation passage for cap of battery cell Download PDF

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Publication number
FR2766621A1
FR2766621A1 FR9709599A FR9709599A FR2766621A1 FR 2766621 A1 FR2766621 A1 FR 2766621A1 FR 9709599 A FR9709599 A FR 9709599A FR 9709599 A FR9709599 A FR 9709599A FR 2766621 A1 FR2766621 A1 FR 2766621A1
Authority
FR
France
Prior art keywords
channel
vent
plug
cap
battery 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.)
Granted
Application number
FR9709599A
Other languages
French (fr)
Other versions
FR2766621B3 (en
Inventor
Pascal Salat
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BB PLAST
Original Assignee
BB PLAST
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 BB PLAST filed Critical BB PLAST
Priority to FR9709599A priority Critical patent/FR2766621B3/en
Publication of FR2766621A1 publication Critical patent/FR2766621A1/en
Application granted granted Critical
Publication of FR2766621B3 publication Critical patent/FR2766621B3/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/308—Detachable arrangements, e.g. detachable vent plugs or plug systems
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Filling, Topping-Up Batteries (AREA)
  • Gas Exhaust Devices For Batteries (AREA)

Abstract

The battery cell cap (2) has a horizontal passage (1) in its lower part, which is inside the battery cell, to allow electrolyte splashes to return easily to the cell interior. A vertical passage (4) rises from the middle of the horizontal passage, and opens into the hollow interior (5) of the cap. A fine outlet hole at the centre of the top of the cap allows gas to escape.

Description

EVENT DE BOUCHON DE BATTERIE
La présente invention a pour objet un évent de bouchon de batterie.BATTERY PLUG VENT
The present invention relates to a battery cap vent.

Les batteries de type à électrolyte liquide, fabriquent des gazs qu'il est nécessaire d'évacuer du corps de ces batteries pour éviter tout accident. La plus grande partie de ces batteries évacue leurs gazs au travers de leurs bouchons par un évent. Batteries of the liquid electrolyte type produce gases which it is necessary to evacuate from the body of these batteries to avoid any accident. Most of these batteries evacuate their gases through their plugs through a vent.

Lors des déplacements des véhicules équipés de ces batteries, le liquide contenu dans ces dernières entre en mouvement dans le corps des batteries sous forme de vagues. Ces vagues frappent le ou les bouchons et le liquide pénètre dans l'évent des bouchons. Afin que le liquide ne traverse pas l'évent et ne sorte pas de la batterie, l'évent se présente sous forme de labyrinthe ou d'une succession de chicanes pour freiner la progression du liquide. When vehicles equipped with these batteries move, the liquid contained in these batteries moves in the body of the batteries in the form of waves. These waves hit the plug (s) and the liquid enters the plug vent. So that the liquid does not pass through the vent and does not leave the battery, the vent is in the form of a labyrinth or a succession of baffles to slow the progression of the liquid.

La dimension d'un bouchon de batterie implique qu'un évent réalisé sous forme de labyrinthe ou de chicanes offre un faible volume de passage, ce qui réduit l'entrée du liquide dans l'évent, mais cela rend difficile l'évacuation du liquide quand ce dernier a pénétré dans l'évent. Le liquide s'écoule d'autant plus difficilement qu'il présente une certaine viscosité. De ce fait, si des vagues viennent frapper un bouchon de manière trop répétée, le liquide pénètre dans l'évent de plus en plus, sans que le liquide n'est le temps de s'écouler, jusqu'à sortir du bouchon par l'évent. The size of a battery cap means that a vent made in the form of a labyrinth or baffles offers a small passage volume, which reduces the entry of liquid into the vent, but this makes it difficult to evacuate the liquid. when the latter entered the vent. The liquid flows all the more difficult as it has a certain viscosity. As a result, if waves strike a stopper too repeatedly, the liquid enters the vent more and more, without the liquid having time to drain, until it leaves the stopper by l '' vent.

De plus les gouttelettes restées coincées dans l'évent sortent du bouchon poussées par les gazs fabriqués par la batterie.In addition, the droplets that are trapped in the vent come out of the cap pushed by the gases produced by the battery.

L'objet de la présente invention est un évent de bouchon de batterie qui permet de résoudre les problèmes évoqués précédement. The object of the present invention is a battery cap vent which makes it possible to solve the problems mentioned above.

L'évent présente dans sa partie inférieure un canal (1) horizontal. Ce canal (1) débouche sur les côtés de la partie inférieure du bouchon (2), formant deux orifices (3). un deuxième canal (4) communique avec le premier canal (1).  The vent has in its lower part a horizontal channel (1). This channel (1) opens onto the sides of the lower part of the plug (2), forming two orifices (3). a second channel (4) communicates with the first channel (1).

Ce deuxième canal (4) est vertical et à la perpendiculaire du premier canal (1). L'extrémité du dixième canal (4) qui se situe à l'opposé du premier canal (1), débouche sur le sommet du bouchon (2). Une chambre (5) largement dimensionnée, pent-etre intercalée entre le deuxième canal (4) et le sommet du bouchon (2). Cette chambre (5) débouche au sommet du bouchon (2), elle peut entrainer une forte diminution de la longueur du deuxième canal (4), jusqu'à ce que celui-ci ne mesure plus que un ou deux millimètres. This second channel (4) is vertical and perpendicular to the first channel (1). The end of the tenth channel (4) which is opposite the first channel (1), opens onto the top of the plug (2). A widely dimensioned chamber (5), may be interposed between the second channel (4) and the top of the plug (2). This chamber (5) opens at the top of the plug (2), it can cause a sharp reduction in the length of the second channel (4), until the latter measures only one or two millimeters.

Les canaux (1 et 4) ne doivent pas présenter une section inférieure a un canal dont la section est de 3 mm. La section théorique idéale est de 5 ou 6 millimètres de diamètre suivant la grosseur du bouchon (2). The channels (1 and 4) must not have a section smaller than a channel whose section is 3 mm. The ideal theoretical section is 5 or 6 millimeters in diameter depending on the size of the plug (2).

L'avantage de cet évent est qu'il permet l'écoulement facile du liquide qui y pénètre. Cet évent ne freine pas le liquide, il le canalise vers l'un ou l'autre des orifices (3) suivant les flux de liquide, mais toujours de la batterie vers la batterie. Le liquide étant facilement évacué de l'évent, ce dernier peut jouer son rôle pleinement laissant échapper les gazs. The advantage of this vent is that it allows the easy flow of the liquid entering it. This vent does not brake the liquid, it channels it to one or other of the orifices (3) according to the liquid flows, but always from the battery to the battery. The liquid being easily evacuated from the vent, the latter can play its role fully letting escape the gases.

Le shéma représente une vue en coupe du corps de la batterie (6), du liquide (7), du bouchon (2), et de l'évent.  The diagram represents a section view of the body of the battery (6), of the liquid (7), of the plug (2), and of the vent.

Claims (3)

REVENDICATIONS 1) Event, d'un bouchon (2) pour batterie, caractérisé par le fait qu'il est constitué par un canal (1) horizontal qui débouche sur les côtés de la partie inférieure du bouchon (2) formant ainsi sur le bouchon deux orifices (3). Ce premier canal (1) communique avec un deuxième canal (4), ce dernier est vertical et surmonte le premier canal (1). Ce deuxième canal (4) débouche sur le sommet du bouchon. 1) Vent, a plug (2) for battery, characterized in that it is constituted by a horizontal channel (1) which opens on the sides of the lower part of the plug (2) thus forming on the plug two holes (3). This first channel (1) communicates with a second channel (4), the latter is vertical and overcomes the first channel (1). This second channel (4) opens onto the top of the plug. 2) Event selon la revendication 1, caractérisé par le fait que les canaux (1) et (4) sont d'une section supérieure ou égale à une section dont le diamètre est 3 mm. 2) Event according to claim 1, characterized in that the channels (1) and (4) are of a section greater than or equal to a section whose diameter is 3 mm. 3) Event selon la revendication 1, caractérisé par le fait qu'une chambre (5) peut être intercalée entre le deuxième canal (4) et le sommet du bouchon (2), à condition que cette chambre (5) débouche sur le sommet du bouchon (2) et qu'elle communique avec le deuxième canal (4).  3) Vent according to claim 1, characterized in that a chamber (5) can be interposed between the second channel (4) and the top of the plug (2), provided that this chamber (5) opens onto the top of the plug (2) and that it communicates with the second channel (4).
FR9709599A 1997-07-23 1997-07-23 BATTERY PLUG VENT Expired - Fee Related FR2766621B3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9709599A FR2766621B3 (en) 1997-07-23 1997-07-23 BATTERY PLUG VENT

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9709599A FR2766621B3 (en) 1997-07-23 1997-07-23 BATTERY PLUG VENT

Publications (2)

Publication Number Publication Date
FR2766621A1 true FR2766621A1 (en) 1999-01-29
FR2766621B3 FR2766621B3 (en) 1999-09-10

Family

ID=9509730

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9709599A Expired - Fee Related FR2766621B3 (en) 1997-07-23 1997-07-23 BATTERY PLUG VENT

Country Status (1)

Country Link
FR (1) FR2766621B3 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001061769A3 (en) * 2000-02-18 2002-02-21 Iordan Stavar Box for automobile accumulators
EP1598883A1 (en) * 2004-05-20 2005-11-23 TABA S.r.l. Improved vent-cap for electric battery

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001061769A3 (en) * 2000-02-18 2002-02-21 Iordan Stavar Box for automobile accumulators
EP1598883A1 (en) * 2004-05-20 2005-11-23 TABA S.r.l. Improved vent-cap for electric battery

Also Published As

Publication number Publication date
FR2766621B3 (en) 1999-09-10

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