# US 2014/0152313 A1 · Battery sensor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0152313 A1 - Document ID: US20140152313A1 - Status: Published application - Kind: A1 - Application number: 13/692,184 - Filed: 2012-12-03 - Published: 2014-06-05 - Earliest claimed: 2012-12-03 - Assignees: Isabellenhuette Heusler GmbH & Co. KG - Applicants: Isabellenhuette Heusler GmbH & Co. KG - Inventors: Ullrich HETZLER - Web page: https://patentgrep.com/patent/US20140152313A1 ## CPC - G01R 31/3842: combining voltage and current measurements - G01R 1/203: {Resistors used for electric measuring, e.g. decade resistors standards, resistors for comparators, series resistors, shunts (resistors in general H01C; microwave or radiowave terminations H01P1/26; coupling devices H01R)} - G01R 31/364: Battery terminal connectors with integrated measuring arrangements - G01R: MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct tuning of resonant circuits H03J3/12) ## Abstract The invention relates to a battery sensor for a battery, in particular a motor vehicle battery, with a pole terminal (2) made out of an electrically conductive material for electric connection of the battery sensor (1) to a connecting contact of a battery, in particular to a ground contact of the battery, as well as with a low-ohm current-sense resistor for measuring a battery current with which the battery is discharged or charged. The battery sensor according to the invention further includes a plurality of tongues (8-10) arranged apart from the pole terminal (2) for mechanical mounting of the current-sense resistor (4) on the pole terminal (2). (FIG. 1) ## Claims ### Claim at position 1 1-15. (canceled) ### Claim 16 A battery sensor for a battery comprising: a) a pole terminal comprising an electrically conductive material for electric connection of the battery sensor to a connecting contact of a battery; b) a low-ohm current-sense resistor for measurement of a battery current with which the battery is discharged or charged; and c) a plurality of tongues protruding from the pole terminal for mechanical mounting of the current-sense resistor on the pole terminal. ### Claim 17 (depends on 16) The battery sensor according to claim 16, wherein the tongues are formed in one piece on the pole terminal. ### Claim 18 (depends on 16) The battery sensor according to claim 16, wherein at least one of the tongues of the pole terminal is electrically conductive outwardly in order to electrically contact a connection part of the current-sense resistor. ### Claim 19 (depends on 16) The battery sensor according to claim 16, wherein at least one of the tongues of the pole terminal is electrically insulated outwardly in order to avoid any electric contact with the current-sense resistor. ### Claim 20 (depends on 19) The battery sensor according to claim 19, wherein two tongues of the pole terminal are outwardly electrically insulated and grip the current-sense resistor on an upper side and on an underside thereof. ### Claim 21 (depends on 16) The battery sensor according to claim 16, further comprising an electronic measuring circuit for measuring an electric voltage dropping over the current-sense resistor as a measure for the battery current. ### Claim 22 (depends on 21) The battery sensor according to claim 21, further comprising a circuit board, wherein the circuit board: a) is adapted to receive the electronic measuring circuit; b) is arranged directly on the current-sense resistor; and c) has voltage taps on an underside thereof, in order to measure electric voltage over the current-sense resistor, wherein two voltage taps of the circuit board are electrically connected to two connection parts of the current-sense resistor. ### Claim 23 (depends on 22) The battery sensor according to claim 22, wherein the measuring circuit is arranged on an upper side of the circuit board. ### Claim 24 (depends on 21) The battery sensor according to claim 21, wherein a) the battery sensor has an electric voltage input for supplying a supply voltage; b) the measuring circuit is supplied with electrical energy by the supply voltage supplied via the voltage input; and c) in addition to the battery current, the measuring circuit also measures the supply voltage fed in via the voltage input. ### Claim 25 (depends on 16) The battery sensor according to claim 16, wherein the battery sensor further comprises a data output for outputting of measured values. ### Claim 26 (depends on 25) The battery sensor according to claim 25, wherein the data output and the voltage input are realized within a same plug contact. ### Claim 27 (depends on 25) The battery sensor according to claim 25, wherein the data output offers a digital data bus. ### Claim 28 (depends on 16) The battery sensor according to claim 16, further comprising a temperature measuring device for measuring at least one of a temperature of the current-sense resistor and a temperature difference between connection parts of the current-sense resistor. ### Claim 29 (depends on 28) The battery sensor according to claim 28, wherein the measuring circuit calculates a thermoelectric voltage dropping over the current-sense resistor as a function of the measured temperature difference over the current-sense resistor and takes account of the thermoelectric voltage in the measurement of the battery current. ### Claim 30 (depends on 28) The battery sensor according to claim 28, wherein the measuring circuit calculates a thermally induced change in resistance as a function of the measured temperature of the current-sense resistor and takes account of the thermally induced change in resistance in the measurement of the battery current. ### Claim 31 (depends on 16) The battery sensor according to claim 16, further comprising an electrically insulating plastic sheathing, which sheaths at least one of the current-sense resistor, a circuit board, a measuring circuit, a plug contact, a temperature measuring device and the tongues of the pole terminal. ### Claim 32 (depends on 31) The battery sensor according to claim 31, wherein the plastic sheathing consists of a thermosetting plastic. ### Claim 33 (depends on 31) The battery sensor according to claim 31, wherein the current-sense resistor, the circuit board, the measuring circuit, the plug contact, the temperature measuring device and the tongues of the pole terminal are coated with a thermosetting plastic. ### Claim 34 (depends on 31) The battery sensor according to claim 31, wherein the plastic sheathing consists of a plastic, which has essentially the same thermal expansion behavior as the circuit board. ### Claim 35 (depends on 31) The battery sensor according to claim 31, wherein the plastic sheathing consists of a plastic, which is thermally conductive. ### Claim 36 (depends on 31) The battery sensor according to claim 31, wherein the current-sense resistor protrudes to some extent out of the plastic sheathing by way of one of two connection parts thereof, and with a protruding part forms a power connection in order to conduct the battery current in or out. ### Claim 37 (depends on 16) The battery sensor according to claim 16, wherein a) the current-sense resistor has a first plate-shaped connection part comprising a conducting material and a second plate-shaped connection part comprising the conducting material; b) the current-sense resistor has a plate-shaped resistance element comprising a resistance alloy; c) the resistance element is arranged in a current path between both connection parts; and d) the conductor material has a smaller specific electric resistance than the resistance alloy. ### Claim 38 (depends on 37) The battery sensor according to claim 37, wherein a) a first tongue of the pole terminal mechanically supports the first connection part of the current-sense resistor from below; b) the first tongue of the pole terminal electrically contacts the first connection part of the current-sense resistor; c) the second connection part of the current-sense resistor forms a current connection in order to lead in or to lead out the battery current; d) a second tongue of the pole terminal supports the current-sense resistor from below; e) a third tongue of the pole terminal supports the current-sense resistor from above; f) the second tongue and the third tongue of the pole terminal are outwardly electrically insulating in order to avoid any electric contact with the current-sense resistor; and g) the second tongue and the third tongue support the current-sense resistor between the two connection parts, in order to absorb a mechanical loading at the second connection part used as power connection. ### Claim 39 (depends on 16) A battery with two connecting contacts, wherein a battery sensor according to claim 16 is attached to one of the connecting contacts.