Method for Checking an Electrical Current Measurement, Circuit for Carrying Out the Method, Battery and Motor Vehicle

摘要

A method for checking an electrical current measurement includes a first step of measuring a current to be measured IM using a current measuring structure. The method also includes a second step of superimposing a test current IP on the current to be measured IM to form a resultant current IRes=IM+IP. The resultant current IRes is measured in a third step using the current measuring structure within a period of time of the second step. In a fourth step, a check follows in order to determine whether the resultant current IRes measured in the third step corresponds to a sum of the current IM measured in the first step plus a known magnitude of the test current IP superimposed in the second step.

主权项

1. A method for checking an electrical current measurement comprising:
(I) measuring a current IM to be measured using a current measuring structure; (II) superposing a test current IP having a known magnitude on the current IM to be measured to give a resultant current IRes, wherein IRes=IM+IP; (III) measuring the resultant current IRes using the current measuring structure within a time span of step (II); and (IV) checking whether the resultant current IRes measured in step (III) corresponds to a sum of the current IM measured in step (I) and the known magnitude of the test current IP superposed in step (II).