EP3335054A1 - Battery sensor unit having a high mechanical robustness - Google Patents
Battery sensor unit having a high mechanical robustnessInfo
- Publication number
- EP3335054A1 EP3335054A1 EP16701435.6A EP16701435A EP3335054A1 EP 3335054 A1 EP3335054 A1 EP 3335054A1 EP 16701435 A EP16701435 A EP 16701435A EP 3335054 A1 EP3335054 A1 EP 3335054A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sensor unit
- battery sensor
- resistance element
- webs
- fastening device
- 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- Withdrawn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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/20—Modifications of basic electric elements for use in electric measuring instruments; Structural combinations of such elements with such instruments
- G01R1/203—Resistors used for electric measuring, e.g. decade resistors standards, resistors for comparators, series resistors, shunts
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/364—Battery terminal connectors with integrated measuring arrangements
Definitions
- the invention relates to a battery sensor unit according to the preamble of the independent claim.
- FIG. 1 shows a battery sensor unit 1 known from the prior art, as frequently used for monitoring a battery condition, for example in a vehicle. It has a first fastening device 2, a resistance element 3, a second fastening device 4 and a housing 5 and an evaluation electronics, not shown.
- the battery sensor unit 1 is connected to a battery, not shown, of a motor vehicle, on the one hand to detect the current or the voltage of the battery. On the other hand, a detection of the temperature is possible.
- the first fastening device 2 is designed so that it can be tightened by means of the clamping screw 21.
- the first fastening device 2 consists in this embodiment of a copper-containing electrically conductive material.
- Other components of the Ma terials ⁇ could be, for example, iron, phosphorus and / or zinc.
- the first fastening device 2 is followed by a first electrical connection via a welded connection
- the voltage drop across the resistance element 3 voltage is detected at measuring points not shown here with the aid of electrical lines of the evaluation and converted into a current based on the defined ohmic resistance.
- the second fastening device 4 electrically as well as mechanically connected in series. It comprises a bolt 41, via which the battery sensor unit 1 is electrically connected to ground.
- a bolt 41 via which the battery sensor unit 1 is electrically connected to ground.
- the bolt 41 instead of the bolt 41, other interfaces for connection to ground would be conceivable.
- said electrically connected in series components for example, in each case a plug connection, a brazed joint, a welded connection or an integrated design in question. It would also be conceivable to omit the first and / or the second connecting piece 38, 39 in the arrangement. Due to different materials and many components, the battery sensor unit 1 described falls out of space, complicated or bulky.
- a support element 6 which mechanically supports the second fastening device 4. This captures a portion of the forces occurring and derives them via the first fastening device 2. So that it does not come to falsified measurements, the support element 6 is made of an insulating material, in this case plastic.
- the object is achieved according to a first aspect of the invention by means of a battery sensor unit 1 according to the preamble of claim 1, wherein the resistance element forms or has a plurality of parallel current paths.
- the resistance element has a plurality of webs. By means of webs can be achieved compared to a full part, under material savings, a good strength. In addition, this corresponds to the principle of a small cross section to achieve a high ohmic resistance.
- the webs are formed such that they each form a current path.
- the mechanically anyway useful webs are also used electrically efficient.
- the webs are attached to the first and second fastening ⁇ supply device.
- the lever arm can be kept short, for example when the second fastening device is loaded.
- the ohmic resistance of the first current path is substantially equal to the ohmic resistance of the second current path.
- a symmetrical current load is made possible and the handling, manufacture and mechanical design of the battery sensor unit are simplified.
- the webs are arranged symmetrically and / or formed. This is advantageous for mechanical strength and manufacturing.
- the webs are arcuate. As a result, their length is increased, which causes a higher ohmic resistance.
- the webs are arrow-shaped and / or arranged as the sides of a triangle. This is a power flow-oriented design of the resistor element.
- the resistance element comprises a central web with a gap.
- measuring points between the outermost webs are arranged in particular on both sides of the gap on the central web.
- the current paths get a large length and thus a sufficiently high associated measuring resistance.
- the measuring points can also be very close to each other in the sense of compactness at the gap.
- a possible temperature measurement at the measuring points by this arrangement is not falsified by the heating of the continuous webs, since there is air in between.
- the second connection piece is integrated in the resistance element. This simplifies the production.
- first fastening device the resistance element and the second fastening device largely consist of the same material.
- evaluation electronics are designed to detect one of the variables voltage, current, temperature at measuring points of the resistance element.
- the resistance element comprises a material whose ohmic resistance almost independent of temperature and almost constant over the lifetime.
- the battery sensor unit stampings according to the invention insbeson ⁇ particular bent stampings and / or milled parts.
- FIG. 2 shows a first embodiment of a battery sensor unit according to the invention in an external view
- FIG 3 shows the structure of the resistive element according to the first embodiment from an electronic view
- FIG. 4 shows a second embodiment of a battery sensor unit according to the invention with a compact design of the second fastening device in a plan view
- FIG. 5 shows a third embodiment of a battery sensor unit according to the invention with a triangular design in a plan view.
- FIG. 2 shows schematically an external view of a first embodiment of a battery sensor unit 1 according to the invention, comprising a first fastening device 2, a resistance element 3 and a second fastening device 4 and an evaluation electronics (not shown).
- the first fastening device 2 is designed as a pole terminal with clamping screw 21 and in its function in Essence with the initially described and shown in FIG. 1 identical. But it can also be any other kind a first fastening device 2, which is suitable for attachment to a vehicle battery can be used.
- the resistance element 3 is integrated at a peripheral portion of the first fastening device 2 and formed integrally therewith. It should be noted that here also a weld, braze, screw or plug connection would be conceivable.
- the resistance element 3 has two webs 31, 32 and two corresponding current paths 31a, 32a, or is designed as a body with a continuous opening, wherein the opening is formed ⁇ from that two separate elongated compounds two sides of the resistor element 3, a in Direction of the first fastening device 2, the other in the direction of the second fastening means 4, electrically and mechanically connect with each other.
- the connection or the webs 31, 32 are dimensioned in their thickness so that they can withstand the maximum occurring in a Bat ⁇ teriesensor 1 loads.
- the webs 31, 32 are therefore arcuate, in particular circular arc, formed, so that the ohmic resistance is higher due to the greater length than in a rectilinear design.
- the webs 31, 32 not only ensure a sufficiently high resistance value, but also increase the strength or robustness of the resistance element 3 and thus of the entire battery sensor unit 1.
- the shape of the resistance element 3 follows a symmetrical structure in all three spatial planes , It should be noted, however, that an asymmetrical structure in each of Embodiments is conceivable and does not conflict with the inventive concept.
- a central web 35 In the middle of the opening extends a central web 35. It is divided by a gap 36 into two electrically and mechanically separate areas. Instead of a mechanical separation, ie an insulation by air, but also a separation by an insulating piece would be conceivable.
- the second fastening device 4 is connected via a ground bar 42 in an integrated form with the resistance element 3. However, the aforementioned connection alternatives would also be possible.
- the second fastening device 4 comprises a screw bolt 41 for connecting the battery sensor unit 1 to ground.
- the first fastening device 2, the resistance element 3 and the second fastening device 4 consist in this embodiment of the same material.
- an embodiment of individual components made of a different material, such as webs 31, 32 or a whole resistance element 3 made of a special resistance material, are also within the scope of the invention.
- the battery sensor unit this Embodiment designed as a milled part, a forging, stamping or punching-bending solution is conceivable.
- FIG. 4 shows a second embodiment in which all the above-described features of the first embodiment with respect to the first fastening device 2 and the resistance element 3 apply.
- the second Befest Trentsein ⁇ device 4 is here, however, in the resistive element 3 inte ⁇ grated or formed in direct connection to the central web 35 from ⁇ .
- the second fastening device 4 is attached as a bead-shaped extension to a second end of the resistance element 3.
- the ohmic total resistance of the battery sensor unit 1 is very low overall due to the short current path.
- a third embodiment is shown in FIG.
- the shape of the resistance element 3 is here adapted to an approximately triangular force flow, represented by the force triangle 37 (shown in dashed lines).
- the webs 31, 32 extend in an arrow shape straight or like the sides of a triangle and run in the longitudinal axis of the bolt 41 towards each other.
- the central web 36 extends centrally to the two webs 31, 32, similar to an axis of symmetry of the triangle 37.
- the cross section of the webs 31, 32 and the central web are formed differently here.
- a force acting on the bolt 41 force is transmitted through the webs 31, 32 so that it is distributed over the entire width of the first fastening device 2. Further features of this embodiment are identical to those already described and will therefore not be repeated.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Secondary Cells (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015215594 | 2015-08-14 | ||
PCT/EP2016/051004 WO2017028960A1 (en) | 2015-08-14 | 2016-01-19 | Battery sensor unit having a high mechanical robustness |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3335054A1 true EP3335054A1 (en) | 2018-06-20 |
Family
ID=55229659
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16701435.6A Withdrawn EP3335054A1 (en) | 2015-08-14 | 2016-01-19 | Battery sensor unit having a high mechanical robustness |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3335054A1 (en) |
CN (1) | CN107923952A (en) |
DE (1) | DE102016200616A1 (en) |
WO (1) | WO2017028960A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102019209182A1 (en) * | 2019-06-25 | 2020-12-31 | Continental Automotive Gmbh | Battery sensor and method for making a battery sensor |
DE102020115782B4 (en) | 2020-06-16 | 2022-08-25 | Eugen Forschner Gmbh | Contacting device for voltage measurement |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005129379A (en) * | 2003-10-24 | 2005-05-19 | Auto Network Gijutsu Kenkyusho:Kk | Battery terminal |
DE102004055849A1 (en) * | 2004-11-19 | 2006-06-01 | Bayerische Motoren Werke Ag | Motor vehicle battery sensor device, has electronic unit attached with connection points such that ohmic resistor formed between connection points is technically integrated in electronic unit |
DE102006036247A1 (en) * | 2006-02-16 | 2007-08-23 | Kromberg & Schubert Gmbh & Co. Kg | Terminal device e.g. for current measurement of motor vehicle battery, has pin-shaped section for positioning in battery terminal recess |
DE202006015500U1 (en) * | 2006-02-16 | 2006-12-28 | Kromberg & Schubert Gmbh & Co. Kg | Terminal device e.g. for current measurement of motor vehicle battery, has pin-shaped section for positioning in battery terminal recess |
DE102010035485A1 (en) * | 2010-08-26 | 2012-03-01 | Isabellenhütte Heusler Gmbh & Co. Kg | Current sense resistor |
DE102013210130A1 (en) * | 2013-03-05 | 2014-09-25 | Continental Automotive Gmbh | Current sensor device with integrated clamping device and mass element |
-
2016
- 2016-01-19 WO PCT/EP2016/051004 patent/WO2017028960A1/en active Application Filing
- 2016-01-19 EP EP16701435.6A patent/EP3335054A1/en not_active Withdrawn
- 2016-01-19 DE DE102016200616.9A patent/DE102016200616A1/en active Pending
- 2016-01-19 CN CN201680046517.1A patent/CN107923952A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
WO2017028960A1 (en) | 2017-02-23 |
CN107923952A (en) | 2018-04-17 |
DE102016200616A1 (en) | 2017-02-16 |
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Legal Events
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STAA | Information on the status of an ep patent application or granted ep patent |
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Effective date: 20180314 |
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Extension state: BA ME |
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DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: CONTINENTAL AUTOMOTIVE GMBH |
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STAA | Information on the status of an ep patent application or granted ep patent |
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18D | Application deemed to be withdrawn |
Effective date: 20210803 |