US 11,530,663 B2 · Method for determining information about a state of a drive motor system and/or of a drive battery pack of a gardening, forestry and/or construction device, and system for determining information about a state of a drive motor system and/or of a drive battery pack of a gardening, forestry and/or construction device

Abstract

A method for determining information (Info) about a state (Z) of a drive motor system (2) and/or of a drive battery pack (11) of a gardening, forestry and/or construction device (1), includes the steps of: acquiring at least one sensor temperature (TS) of at least one temperature component (3) of the drive motor system (2) and/or of the drive battery pack (11) by way of at least one component temperature sensor (4) at the same time as and/or at a time after operation of the drive motor system (2) and/or of the drive battery pack (11) and/or of a heater (300) and/or of a cooler (310) and/or of a fan (320) for heating and/or for cooling the drive battery pack (11), wherein the temperature component (3) heats up or cools down due to the operation; ascertaining operating data (BD) of the operation, wherein the operating data (BD) are of a different kind than the sensor temperature (TS); comparing the acquired sensor temperature (TS) or a variable based on the sensor temperature and the ascertained operating data (BD) or a variable (TM) based on the operating data (BD) by way of a temperature model (MOD), wherein the temperature model (MOD) is based on at least one model state (AZyes) of the drive motor system (2) and/or of the drive battery pack (11); and determining the information (Info) on the basis of a result of the comparison.

Claims16

Dependent claims

A method for determining information (Info) about a state of an electric drive motor system and/or of a drive battery pack of a gardening, forestry and/or construction device, the method comprising the steps of:

acquiring at least one sensor temperature (TS) of at least one temperature component of the electric drive motor system and/or of the drive battery pack by way of at least one component temperature sensor at the same time as and/or at a time after operation of at least one of:
the electric drive motor system, the drive battery pack, or a heater, cooler or fan for heating and/or cooling the drive battery pack, wherein the temperature component heats up or cools down due to the operation;
ascertaining operating data (BD) of the operation, wherein the operating data (BD) are of a different kind than the sensor temperature (TS);
comparing the acquired sensor temperature (TS) or a variable based on the sensor temperature and the ascertained operating data (BD) or a variable (TM) based on the operating data (BD) by way of a temperature model (MOD), wherein the temperature model (MOD) is based on at least one model state (AZyes) of the electric drive motor system and/or of the drive battery pack;
and
determining the information (Info) on the basis of a result of the comparison,
wherein the operating data (BD) are linked to:
an energy supply (Pzu) of the operation and/or a heat dissipation (Pab) due to the operation,
wherein the operating data (BD) contain at least one of:
an operating current (I), an operating voltage (U), or a speed (n), and
wherein the temperature component is an electric drive motor, motor electronics, a battery cell, or pack electronics.

8 more elements

A system for determining information (Info) about a state (Z) of an electric drive motor system and/or of a drive battery pack of a gardening, forestry and/or construction device, the system comprising:

an acquisition unit, wherein the acquisition unit is designed to acquire at least one sensor temperature (TS) of at least one temperature component of the electric drive motor system and/or of the drive battery pack by way of at least one component temperature sensor at the same time as and/or at a time after operation of at least one of:
the electric drive motor system, the drive battery pack, or a heater, cooler or a fan for heating and/or cooling the drive battery pack, wherein the temperature component heats up or cools down due to the operation;
an ascertainment unit, wherein the ascertainment unit is designed to ascertain operating data (BD) of the operation, wherein the operating data (BD) are of a different kind than the sensor temperature (TS);
a comparison unit, wherein the comparison unit is designed to compare the acquired sensor temperature (TS) or a variable based on the sensor temperature and the ascertained operating data (BD) or a variable (TM) based on the operating data (BD) by way of a temperature model (MOD), wherein the temperature model (MOD) is based on at least one model state (AZyes) of the electric drive motor system and/or of the drive battery pack;
and
a determination unit, wherein the determination unit is designed to determine the information (Info) on the basis of a result of the comparison,
wherein the operating data (BD) are linked to:
an energy supply (Pzu) of the operation and/or a heat dissipation (Pab) due to the operation,
wherein the operating data (BD) contain at least one of:
an operating current (I), an operating voltage (U), or a speed (n), and
wherein the temperature component is an electric drive motor, motor electronics, a battery cell, or pack electronics.

8 more elements

Dependencies are inferred from the claim text.

Life of this patent

Life of this patent

Abstract

Claims16