EP4187722A1 - Borne de batterie - Google Patents

Borne de batterie Download PDF

Info

Publication number
EP4187722A1
EP4187722A1 EP21211214.8A EP21211214A EP4187722A1 EP 4187722 A1 EP4187722 A1 EP 4187722A1 EP 21211214 A EP21211214 A EP 21211214A EP 4187722 A1 EP4187722 A1 EP 4187722A1
Authority
EP
European Patent Office
Prior art keywords
battery
terminal
ring section
recesses
battery terminal
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.)
Pending
Application number
EP21211214.8A
Other languages
German (de)
English (en)
Inventor
Christoph Baumgartner
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.)
Intercable GmbH
Original Assignee
Intercable GmbH
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 Intercable GmbH filed Critical Intercable GmbH
Priority to EP21211214.8A priority Critical patent/EP4187722A1/fr
Publication of EP4187722A1 publication Critical patent/EP4187722A1/fr
Pending legal-status Critical Current

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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
    • 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
    • H01R11/286—End pieces consisting of a ferrule or sleeve for connections to batteries having means for improving contact between battery post and clamping member, e.g. uneven interior surface

Definitions

  • the present invention relates to a battery terminal for producing an electrical contact to a pole of a battery, a method for producing such a battery terminal, a system, use of strip material with at least one structured surface in such a battery terminal and use of such a battery terminal in such System.
  • Battery terminals are known in principle from the prior art. Battery terminals are used, for example, in motor vehicles in order to connect a battery to the vehicle electrical system. The battery terminals must meet safety requirements. In this context, it has emerged that there is a further need to provide battery clamps for making electrical contact with a pole of a battery.
  • a battery clamp for making electrical contact with a post of a battery, comprising: a ring portion adapted to be placed on the post of the battery; a first clamping interface located at a first end of the ring portion; a second clamping interface located at a second end of the ring portion; a clamping element configured to be arranged at the first clamping interface and the second clamping interface such that the ring portion is clamped to the terminal of the battery to make electrical contact; wherein a surface of an inner side of the ring portion has uniformly distributed recesses.
  • the term battery clamp is to be understood broadly in the present case and means a mechanical structural element that is set up to establish electrical contact between a pole of a battery and a cable that is connected to the Clamp is attached to provide a mechanical contact.
  • the term pole is to be understood broadly and means a positive pole or a negative pole of a battery.
  • the pole is preferably designed as a metallic cylinder or as a metallic cone, in which case the diameter for the positive pole and negative pole can differ.
  • the pole can also be greased to prevent corrosion.
  • the term battery is to be understood broadly in the present case and means an accumulator that provides electrical energy.
  • the battery is, for example, a starter battery in a motor vehicle.
  • the battery is, for example, a lead-acid battery.
  • the battery is used, for example, to start the motor vehicle or to supply the vehicle electrical system.
  • the term electrical contact is to be understood broadly and means a mechanical contact between the battery terminal and the pole, which is set up to conduct current between the battery terminal and the pole.
  • the term ring section is to be understood broadly and means a hollow-cylindrical section that is not completely closed.
  • the ring section preferably has a diameter which corresponds approximately to a size of a diameter of the pole.
  • the ring section can have a cylindrical inner surface.
  • the ring section can have a conical inner surface.
  • clamping interface is to be understood broadly in the present case and means an interface that is set up in order to be drawn together with a corresponding interface by a clamping element and thus cause the battery terminal to be clamped around the pole.
  • the clamping interface can be designed as a tab or recess at the end of the ring section.
  • the terminal interface can be designed as a threaded hole.
  • the clamping cut interface can be designed as a flat solid material.
  • clamping element is to be understood broadly in the present case and means a mechanical structural element that is set up to clamp or pull together the first and second clamping interfaces.
  • the clamping element can be a screw with a nut, for example.
  • the clamping element can be a screw, for example.
  • the clamping element can be a clip, for example.
  • the term recess is to be understood broadly in the present case and means a recess or free space in a surface of an inner side of the ring section.
  • the recess can be continuous from an inside to an outside of the ring section.
  • the recess cannot be continuous, ie it can be designed as a pocket.
  • the recess can have any geometry as a base, for example a rectangle, a rhombus, a circle, a square, a trapezoid.
  • the recesses are evenly distributed over the inner lateral surface. In other words, there is a pattern.
  • the term recess or recesses means a large number of recesses.
  • the base areas of the recesses are preferably smaller than 5 mm 2 , particularly preferably smaller than 3 mm 2 .
  • the depth of the recess is preferably 1 mm, particularly preferably 1.5 mm.
  • the depth of the recess is very particularly preferably less than 0.5 mm.
  • the invention is based on the finding that battery terminals for batteries in motor vehicles must meet special safety requirements. These safety requirements include, among other things, ensuring a mechanically strong connection that prevents the battery terminal from twisting and/or being pulled off the pole in the event of accidents, vibrations or generally when loads (ie forces and moments) occur. A loosening of the battery terminal in the event of an accident during operation can lead to a short circuit and/or failure of the on-board electronics and the corresponding safety devices of the vehicle, such as electric steering, an airbag, a belt tensioner, etc., or to fires in the vehicle. In some cases, the poles of the batteries are greased or oiled to counteract corrosion.
  • the poles are mostly conical. Both reduce the clamping effect of the battery terminal.
  • the present invention solves this by providing a recessed surface on the inside of the battery clip.
  • the recesses distributed over the surface of the inside of the battery terminal can advantageously absorb excess lubricant and thus increase the mechanical resistance to twisting and pulling off.
  • the recesses each have edges on their edges which engage or "bite” or cut into the surface of the pole when the battery terminal is clamped and thus cause increased friction. This also results in increased resistance to twisting and pulling off the battery terminal when loads occur.
  • the underlying edge length increases significantly compared to a continuous longitudinal groove, for example.
  • Preferably between 3% and 10% of the total area, particularly preferably between 4% and 7% and very particularly preferably about 6% of the total area can be provided with recesses. This has a positive effect on the resistance to peeling and twisting.
  • the recesses are preferably distributed uniformly over a circumference of the ring section. This can have a positive effect on resistance to twisting and peeling.
  • the recesses are preferably distributed evenly over the height of the ring section. This can have a positive effect on resistance to twisting and peeling.
  • the recesses are preferably introduced into the surface of the inside of the ring section by means of a forming process.
  • recesses are introduced by embossing, rolling, pressing.
  • Through Forming methods can be used to provide recesses in a cost-effective, precise and repeatable manner.
  • a semi-finished product for example a sheet metal strip, is provided with recesses by rolling. This is then formed into the battery terminal in a further process step, for example by stamping and deep-drawing.
  • the surface of the inside of the ring section preferably has a conical shape.
  • the ring section, the first clamping interface and the second clamping interface are preferably designed in one piece.
  • the one-piece design can be realized using a stamping and bending process and a deep-drawing process with an appropriate tool.
  • the one-piece design can have a positive effect on the weight, cost and accuracy of the battery clamp.
  • the ring section, the first clamping interface and the second clamping interface are preferably produced from a semi-finished product with at least one structured surface, the structured surface having the recesses for the surface of the inside of the ring section. This can have a beneficial effect on the manufacturing efficiency and quality of the battery clamp.
  • the semi-finished product is preferably a strip material with at least one structured surface.
  • the recesses preferably have a diamond-shaped geometry.
  • the surface of the inside of the ring portion further has at least one continuous over a height of the ring portion running recess, wherein the continuously running recess has a length of approximately the height of the ring portion.
  • the continuous recess can have an advantageous effect with the evenly distributed recesses on the resistance to twisting and/or pulling off.
  • a method for producing a battery terminal described in more detail above comprising stamping and bending a semi-finished product with at least one structured surface in a progressive die and/or rolling in a rolling mill, for example for semi-finished products made of strip material.
  • the semi-finished product with at least one structured surface is, for example, a structured sheet metal strip, the sheet metal strip having embossed rhombuses as a structure on one side.
  • the ring section is first produced from the semi-finished product with at least one structured surface, for example by means of a stamping and bending process.
  • a first clamping interface e.g. a tab
  • a second clamping interface e.g.
  • a tab are produced at the ends of the ring section, for example by means of a deep-drawing process.
  • a clamping element e.g. a screw with a lock nut
  • the battery terminal can also be contacted with a battery connection cable or cable (e.g. by soldering, screwing, crimping, welding, etc.).
  • a system comprising: one or two battery terminals described in detail above; a battery; two battery connection cables.
  • the system further includes a motor vehicle.
  • the battery together with the battery clamps and battery connection cable serve as an energy store for the motor vehicle.
  • a further aspect relates to the use of strip material with at least one structured surface in a battery terminal described in more detail above.
  • a further aspect relates to the use of a battery clamp described in more detail above in a system described in more detail above.
  • FIG 1 shows a schematic view of a semi-finished product 10 with a structured surface 11.
  • the semi-finished product 10 is a sheet metal strip with a structured surface.
  • the structured surface 11 has recesses 12 for the surface of the inside of the ring section of the battery terminal (cf. figure 2 ) on.
  • the recesses 12 have a diamond-shaped structure or geometry.
  • the recesses 12 are evenly distributed over the height and width of the semi-finished product 10 .
  • the strip sheet 12 consists of a metallic material (eg copper, brass, copper alloys such as CuFeP, etc.).
  • the recesses 12 have been introduced into the semi-finished product 10 via a forming process, for example rolling.
  • the recesses 12 are designed as pockets 13, ie they are not continuous.
  • FIG 2 12 shows a schematic view of a battery clip 20 of a preferred embodiment.
  • the battery clip 20 is used to make electrical contact with a terminal of a battery.
  • the battery clip 20 includes a ring portion 21 adapted to be placed at the terminal of the battery (not shown).
  • the battery clamp 20 further includes a first clamp interface 22 which is arranged at a first end of the ring section 21 .
  • the battery clamp 20 further comprises a second clamp interface 23 which is arranged at a second end of the ring section 20 .
  • the battery clamp 20 further includes a clamping element 24 which is configured to be arranged at the first clamping interface and the second clamping interface in such a way that the ringer section 21 is clamped to the pole of the battery (not shown) to produce an electrical contact, with a Surface 27 has an inner side of the ring portion 21 evenly distributed recesses 25.
  • the clamping element 24 is a screw with a lock nut.
  • the battery terminal 20 has presently further an interface area 26, which is set up to be connected (e.g. by soldering) to a battery connection cable (not shown).
  • the recesses 25 are introduced into the surface 24 of the inside of the ring section 21 via a forming process.
  • the ring section 21, the first clamping interface 22 and the second clamping interface 23 are produced from a semi-finished product with at least one structured surface, the structured surface having the recesses 25 of the surface 24 on the inside of the ring section 21.
  • the structured semi-finished product is a strip material with a structured surface.
  • the ring section 21, the first clamping interface 22 and the second clamping interface 23 are made in one piece.
  • figure 3 12 shows a schematic sectional view of a battery clip 40 of a preferred embodiment.
  • the surface 41 of the inside of the ring section 42 of the battery terminal 40 has a conical shape.
  • figure 4 12 shows a schematic sectional view of a battery clip 50 of a preferred embodiment.
  • the surface 51 of the inside of the ring section 52 also has two recesses 53 and 54 running continuously over a height of the ring section 52 , the recesses 53 and 54 running continuously having a length of approximately the height of the ring section 52 .

Landscapes

  • Connection Of Batteries Or Terminals (AREA)
EP21211214.8A 2021-11-30 2021-11-30 Borne de batterie Pending EP4187722A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP21211214.8A EP4187722A1 (fr) 2021-11-30 2021-11-30 Borne de batterie

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21211214.8A EP4187722A1 (fr) 2021-11-30 2021-11-30 Borne de batterie

Publications (1)

Publication Number Publication Date
EP4187722A1 true EP4187722A1 (fr) 2023-05-31

Family

ID=78819896

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21211214.8A Pending EP4187722A1 (fr) 2021-11-30 2021-11-30 Borne de batterie

Country Status (1)

Country Link
EP (1) EP4187722A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4354726A (en) * 1979-03-20 1982-10-19 Nissan Motor Company, Limited Battery terminal connector with an uneven interior surface
EP0825681A1 (fr) * 1996-08-21 1998-02-25 Sumitomo Wiring Systems, Ltd. Borne de batterie
JP2015088262A (ja) * 2013-10-29 2015-05-07 矢崎総業株式会社 バッテリー端子
JP2018081813A (ja) * 2016-11-16 2018-05-24 古河電気工業株式会社 バッテリーポスト端子

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4354726A (en) * 1979-03-20 1982-10-19 Nissan Motor Company, Limited Battery terminal connector with an uneven interior surface
EP0825681A1 (fr) * 1996-08-21 1998-02-25 Sumitomo Wiring Systems, Ltd. Borne de batterie
JP2015088262A (ja) * 2013-10-29 2015-05-07 矢崎総業株式会社 バッテリー端子
JP2018081813A (ja) * 2016-11-16 2018-05-24 古河電気工業株式会社 バッテリーポスト端子

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