US 12,405,294 B2
Current sensor
Sören Lehmann, Frankfurt am Main (DE); Michael Irsigler, Regensburg (DE); Anjana Gopinath, Maruthi Nagar (IN); Wolfgang Weigert, Tegernheim (DE); and Manfred Frimberger, Ergoldsbach (DE)
Assigned to Continental Automotive Technologies GmbH, Hannover (DE)
Filed by Continental Automotive Technologies GmbH, Hannover (DE)
Filed on Jul. 28, 2023, as Appl. No. 18/361,448.
Claims priority of application No. 10 2022 207 854.3 (DE), filed on Jul. 29, 2022.
Prior Publication US 2024/0036083 A1, Feb. 1, 2024
Int. Cl. G01R 15/20 (2006.01); G01R 15/14 (2006.01); G01R 31/382 (2019.01)
CPC G01R 15/202 (2013.01) [G01R 15/142 (2013.01); G01R 31/382 (2019.01)] 14 Claims
OG exemplary drawing
 
1. A current sensor comprising:
an electrical conductor comprising a first connection and a second connection configured to contact a battery;
a first current measurement device configured to detect a first measurement value of a current flowing over the electrical conductor;
a second current measurement device configured to detect a second measurement value of the current flowing over the electrical conductor;
a first evaluation circuit connected to the first current measurement device, the first evaluation circuit configured to receive the first measurement value and output a first current measurement signal based on the first measurement value;
a second evaluation circuit connected to the second current measuring device, the second evaluation circuit configured to receive the second measurement value and output a second current measurement signal based on the second measurement value; and
a communications link provided between the first evaluation circuit and the second evaluation circuit,
wherein the first evaluation circuit is configured to send a first test signal to the second evaluation circuit,
wherein the second evaluation circuit is configured to send a second test signal to the first evaluation circuit,
wherein the first evaluation circuit is configured to check the second test signal and send a first correction signal to the second evaluation unit when the second test signal deviates from a second reference value,
wherein the second evaluation circuit is configured to check the first test signal and send a second correction signal to the first evaluation unit when the first test signal deviates from a first reference value.