EP3248249A1 - Elément de protection d'une borne d'un ensemble de stockage d'énergie électrique - Google Patents
Elément de protection d'une borne d'un ensemble de stockage d'énergie électriqueInfo
- Publication number
- EP3248249A1 EP3248249A1 EP16701595.7A EP16701595A EP3248249A1 EP 3248249 A1 EP3248249 A1 EP 3248249A1 EP 16701595 A EP16701595 A EP 16701595A EP 3248249 A1 EP3248249 A1 EP 3248249A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- orifice
- terminal
- electrical connection
- connection element
- protection
- 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.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
- H01R9/22—Bases, e.g. strip, block, panel
- H01R9/223—Insulating enclosures for terminals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
- H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
- H01R11/28—End pieces consisting of a ferrule or sleeve
- H01R11/281—End pieces consisting of a ferrule or sleeve for connections to batteries
- H01R11/283—Bolt, screw or threaded ferrule parallel to the battery post
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
- H01M50/552—Terminals characterised by their shape
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
- H01M50/562—Terminals characterised by the material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
- H01R4/34—Conductive members located under head of screw
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/70—Insulation of connections
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- the invention relates to the electrical protection of the connection terminals of electrical energy storage assemblies, for example batteries, in particular to meet the various safety standards in force and more particularly the standard (IEC 60529) which defines the degree of electrical protection.
- the invention relates more particularly to a protection element of a battery terminal, made of electrically insulating material and completely covering the terminal, said protection element comprising a first orifice intended to receive an associated electrical connection element.
- a battery is a component that can store and return electrical energy through two metal terminals, a positive and a negative, between which there is a voltage, which can reach a significant level and dangerous for the man, including being able to lead to electrocution if he touches one or both terminals under certain conditions.
- the batteries are accessible in a place where people can be nearby, such as public places, or during the intervention of operators for the maintenance of batteries or surrounding equipment, these people are likely to to be in danger if they come into contact with the battery terminals.
- Document FR 2,996,364 describes a quick connector for a battery terminal.
- this document is mainly focused on a means to limit the risk of electric flash or spark that can cause burns to an individual when connecting said connector.
- the documents DE 39 422 41, EP 0 374 342, FR 2 601 515, EP 0 190 485 and FR 2 692 727 describe rapid connectors for battery terminals, based on the principle of a hinge of a hood protection, leaving the terminal completely free of contact at a given moment.
- the terminals are accessible during all phases of life of the battery through a metal connector, since to allow the flow of an electric current;
- either the terminals are accessible at a time of the connection or disconnection; if the battery has a voltage at its terminals at that time, the individual responsible for connection, disconnection and / or maintenance may be in danger and will have to protect himself with the aid of personal equipment. electrical protection, even to mark and isolate the entire working area, which can be very restrictive when the battery is located in an area accessible to the public and is not easily moved.
- the object of the invention is thus to remedy all of the aforementioned drawbacks and is intended to provide a protection element for a battery terminal which is simple in design, efficient and which makes it possible to ensure the safety of an operator handling the battery under any circumstances and more particularly to meet the various safety standards in force.
- the invention relates to a system comprising at least one electrical energy storage assembly comprising a terminal, an electrical connection element intended to be connected to the terminal and a protection element of the terminal, made of electrically insulating material and completely covering the terminal, said protection element having a first orifice for receiving the associated electrical connection element, characterized in that the dimensions of the first orifice are such that the free play between the contour of the first orifice and the electrical connection element which passes through this first hole is less than 12mm to prevent contact of a finger with the terminal.
- the free play between the contour of the first orifice and the electrical connection element which passes through this first orifice is less than 5 mm and very preferably less than 2 mm.
- the invention also relates directly to the protection element itself of a terminal of an electrical energy storage assembly, of a system of the aforementioned type, made of electrically insulating material and completely covering the terminal, said element protection device comprising a first orifice intended to receive an associated electrical connection element, characterized in that the dimensions of said first orifice are calculated so that the free play between the contour of the first orifice and the electrical connection element which passes through this first orifice is less than 12mm to allow the passage of the electrical connection element while preventing any contact with the terminal, especially any finger contact of an operator during handling and / or installation of said electrical connection element associated.
- Such a protection element thus makes it possible to present a protection system against the electrical danger of level B (IEC 60529 standard), that is to say protecting against direct access with a finger to the terminal of the set of storage of electrical energy, for example a battery.
- level B IEC 60529 standard
- finger is meant the finger of an operator during handling and / or installation of the electrical connection element, but also, according to the standard, a finger test piece or “standard” articulated test piece, 12mnn in diameter and 80mm in length.
- Said first orifice may be positioned laterally on said protective element or may be positioned at the end of a protuberance projecting laterally from the main wall of the protection element.
- Said first orifice may be of substantially oblong shape and may have dimensions of the order of 30 mm in length and 7.5 mm in width.
- - Said element may comprise a second orifice, positioned on the upper part of the element and intended for the passage of fasteners, for example of the screw and washer type, of said associated electrical connection element on the terminal.
- - Said element may comprise a protective cap made of electrically insulating material for covering said fastening elements.
- Said second orifice may be provided with at least one recess, intended to cooperate with an associated tool necessary for disassembly of said cap, may be circular and may have a diameter of the order of 22mm.
- the fixing screw may comprise an overmolding made of electrically insulating material, for example hexagonal imprint.
- Said protective element may be of cylindrical shape, with an outer diameter of about 47 mm, a wall thickness of about 5 mm, an internal diameter of about 37 mm and a height of the order of 40mm.
- FIG. perspective view of a first embodiment of a protection element of a battery terminal according to the invention.
- FIG. 2 represents a perspective view of an alternative embodiment of a protection element of a battery terminal according to the invention.
- FIGS. 3a to 3d are each a perspective view of different successive steps of mounting the protection element according to Figure 1, on a connection terminal of a battery.
- FIGS. 4a and 4b show, respectively, a schematic perspective view and a schematic sectional view along a radial plane referenced AA, of another variant embodiment of a protection element of a battery terminal according to the invention. . Description of particular embodiments
- the protection element 10 for a terminal 11 of a battery is made of electrically insulating material, preferably a synthetic, plastic or composite material.
- the protective element 10 is shaped, that is to say it completely covers the terminal 1 1, so as to meet the various safety standards in force, particularly with regard to the European standard (IEC 60529) on level B protection against contact by a finger.
- "terminal" means the portion of the battery accessible and potentially live.
- the terminal 1 1 may be surrounded by a radial insulating protective ring (corresponding to the reference 1 1 in Figures 3a to 3d). Most often such terminals 1 1 are formed of a cylindrical barrel of revolution about a central axis.
- the protection element 10 is preferably formed of a cylindrical wall 100 of revolution about a central axis OO (FIG. 2) comprising an end partition 1 10 orthogonal to the axis OO on one of its ends.
- the wall 100 and the end wall 1 10 define in combination a cylindrical inner chamber 102 complementary to the outer geometry of the terminal 1 1 ( Figure 4b).
- the invention is however not limited to this particular embodiment.
- the geometry of the protection element 10 according to the present invention is in all cases adapted to that of the terminal 1 1.
- the protection element 10 comprises a lateral orifice 12, passing through the wall 100, whose dimensions are calculated so as to allow the passage of an associated electrical connection element 13, for example of the "busbar” type.
- electrical connection element or “busbar” is meant an electrically conductive part, the major part of which is covered with an electrical insulator. Only the ends of the piece 13 are bare to allow sufficient electrical connection with the terminal 1 1.
- one end 13a of the electrical connection element 13 connects to the + terminal of an energy storage assembly
- the other end 13b of the same electrical connection element 13 connects to the terminal - of another set of electrical energy storage, thus allowing serialization of electrical energy storage assemblies.
- the electrical connection element 13 shown in Figures 3a to 3d has a rectangular cross section.
- the invention is however not limited to this particular embodiment and can extend to any other section compatible with the invention.
- the orifice 12 is arranged on the main lateral surface of the protective element 10, in the wall 100, and has substantially an oblong shape whose dimensions are just necessary and sufficient to pass the end 13a of the element of electrical connection 13, while preventing any contact with the terminal 1 1, especially any contact of a finger of an operator during handling and / or installation of said electrical connection element 13.
- the protection element 10 is of substantially hollow cylindrical shape, with an outside diameter D1 of the order of 47 mm, a wall thickness e of the order of 5 mm, an inside diameter D 2 of the order of 37mm and a height H of the order of 40mm.
- the lateral orifice 12 has a length L of the order of 30 mm and a width I of the order of 7.5 mm.
- the free play between the contour of the first orifice 12 and the electrical connection element 13 which passes through this first orifice 12 is less than 5 mm and very preferably less than 2 mm.
- the protection element 10 comprises an upper orifice 14, in the end wall 1 10, positioned on the horizontal upper surface of the protection element 10 and intended for the passage of fastening elements 15,
- a screw 15 and a washer 16 make it possible to fix and maintain the contact between the electrical connection element 13 and the terminal 1 1.
- These components 15, 16 are made of metal, thus of electrically conductive material, to allow a good mechanical strength and a constant and sufficient support of the electrical connection element 13 on the terminal 1 1, the quality of the electrical transmission being a function of the quality of the contact.
- the upper orifice 14 thus allows access for clamping the fastening elements 15, 16.
- the screw 15 can be engaged in a through-orifice 21 formed on one end of the connection element 13 and clamped in an orifice made on the top of the terminal 11.
- the protective element 10 advantageously comprises a cap 17, also made of electrically insulating material, which covers the head of the screw 15 thus preventing access to it when it is screwed on the terminal 1 1 and therefore under tension ( Figures 3a to 3d).
- the cap 17 is intended to be driven into the upper orifice 14.
- the upper orifice 14 is thus advantageously provided with two cavities 18 diametrically opposed, for example of substantially parallelepipedal shape, which open into the central circular orifice 14.
- the shape of the cavities 18 diametrically opposite on either side of the central orifice 14 allows the passage of a tool (a flat-nose pliers or a screwdriver for example) to remove the cap 17, in particular during a phase of disconnection and disassembly of the electrical connection element 13.
- the head of the screw 15 may include an overmoulding of electrically insulating material, for example plastic, preferably with a hexagonal imprint, so as to cooperate with an associated screwing / unscrewing tool.
- the cap 17 is not necessary.
- the upper orifice 14 has a diameter D3 of the order of 22mm and a total width D4 of the order of 30mm considering the two cavities 18 for the passage of tools.
- the variant embodiment of the protection element 10 differs from the embodiment shown in FIG. 1 by the lateral orifice 12, which comprises an additional rounding of passage 19, in particular to cooperate with an element of FIG. electrical connection 13 associated with totally or partially circular section.
- the rounding 19 is preferably in the form of a semicircle, in cross section. It is located mid width of the oblong light component of the lateral orifice 12 and opens into this light.
- the connection elements 13 which have a circular cross section are then engaged in the rounded 19 and in the portion of the light 12 located opposite.
- the protection element 10 is placed around the terminal 1 1.
- the electrical connection element 13 is inserted into the lateral orifice 12 so as to position a hole 21 of its end 13a coaxially with a "hole" in the terminal 11 (not shown in the figures for the sake of clarity).
- the washer 16 and then the screw 15 are then inserted through the upper orifice 14 of the protective element 10.
- the screw 15 is engaged through the hole 21 of the electrical connection element 13 and then in the formed hole at the end of terminal 1 1.
- the screw 15 is then tightened to the recommended torque value.
- the cap 17 is finally positioned on the head of the screw 15.
- the electrical connection element 13 is coated with an electrically insulating coating over its entire length with the sole exception of its ends 13a and 13b which intervene in the electrical connection.
- the aforementioned electrically insulating coating is referenced 13c in FIGS. 3a to 3d appended.
- the disassembly phase can be applied as follows. First, the cap 17 is removed from the head of the screw 15, for example using a flat gripper. The screw 15 and the washer 16 are then removed, and the electrical connection element 13 is then removed. Finally, the protection element 10 is also removed from the terminal 1 1.
- the protective element 10 has a protuberance 20, or chimney, projecting laterally from the main wall 100 of the protection element 10.
- the lateral orifice 12 is then arranged at the end of the protrusion 20.
- a such conformation of the protection element 10 with the protuberance 20 makes it possible to further optimize the security at the terminal 1 1 of the battery, with regard to the level of protection B against the electrical hazard (IEC 60529 standard).
- the protection element 10 according to the invention has many advantages:
- the invention is not limited to the various embodiments described above.
- the shape and dimensions of the protection element 10 are non-limiting and depend in particular on the shape and dimensions of the terminals and the battery considered. More particularly, the dimensions of the first lateral orifice 12 of the protection element 10 depend on the dimensions of the associated electrical connection element 13, which are determined according to the value of the desired current.
- the protective element 10 may be parallelepipedal, square or rectangle, etc.
- the lateral orifice 12 may be of different shape, as long as the dimensions of said shape allow to cooperate with a lateral connection element 13, while meeting the safety standards in force, to avoid contact with a finger.
Landscapes
- Connection Of Batteries Or Terminals (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1550552A FR3032068B1 (fr) | 2015-01-23 | 2015-01-23 | Element de protection d'une borne d'un ensemble de stockage d'energie electrique |
PCT/EP2016/051362 WO2016116609A1 (fr) | 2015-01-23 | 2016-01-22 | Elément de protection d'une borne d'un ensemble de stockage d'énergie électrique |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3248249A1 true EP3248249A1 (fr) | 2017-11-29 |
Family
ID=53491601
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16701595.7A Withdrawn EP3248249A1 (fr) | 2015-01-23 | 2016-01-22 | Elément de protection d'une borne d'un ensemble de stockage d'énergie électrique |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3248249A1 (fr) |
FR (1) | FR3032068B1 (fr) |
HK (1) | HK1246984A1 (fr) |
WO (1) | WO2016116609A1 (fr) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3413593A (en) * | 1967-11-03 | 1968-11-26 | Joseph K. Schaefer | Isolated electrical terminal connection |
US5346408A (en) * | 1993-12-27 | 1994-09-13 | General Motors Corporation | Battery cable assembly |
DE10124168A1 (de) * | 2001-05-17 | 2002-11-21 | Vb Autobatterie Gmbh | Elektrischer Akkumulator |
US7530843B1 (en) * | 2008-03-19 | 2009-05-12 | Yazaki North America, Inc. | Sealed electrical terminal |
US8709628B2 (en) * | 2010-09-02 | 2014-04-29 | Bathium Canada Inc. | Battery pack with connecting device |
-
2015
- 2015-01-23 FR FR1550552A patent/FR3032068B1/fr active Active
-
2016
- 2016-01-22 EP EP16701595.7A patent/EP3248249A1/fr not_active Withdrawn
- 2016-01-22 WO PCT/EP2016/051362 patent/WO2016116609A1/fr active Application Filing
-
2018
- 2018-05-15 HK HK18106294.0A patent/HK1246984A1/zh unknown
Also Published As
Publication number | Publication date |
---|---|
FR3032068B1 (fr) | 2018-10-26 |
HK1246984A1 (zh) | 2018-09-14 |
FR3032068A1 (fr) | 2016-07-29 |
WO2016116609A1 (fr) | 2016-07-28 |
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