Battery system and method for cooling the battery system

摘要

A battery system having a cooling plate with a conduit therein is provided. The system further includes a battery module having first and second battery cells. The system further includes a compressor, and a condenser coupled between the compressor and the conduit of the cooling plate. The system further includes a microprocessor that determines a maximum temperature level of the first and second battery cells, and determines a target temperature level for the cooling plate based on the maximum temperature level. The microprocessor determines a temperature error value based on a difference between a temperature level and the target temperature level of the cooling plate, and determines a desired RPM value for the compressor based on the temperature error value.

主权项

1. A battery system, comprising:
a cooling plate having a conduit therein; a battery module having a housing, first and second battery cells, and a solid cooling fin; the housing configured to hold the first and second battery cells therein, the solid cooling fin having first and second panel portions, the first panel portion being disposed against the first battery cell, the second panel portion extending through the housing and being disposed on the cooling plate, the solid cooling fin being configured to conduct heat energy from the first battery cell to the cooling plate; a compressor fluidly coupled to the conduit of the cooling plate; a condenser fluidly coupled between both the compressor and the conduit of the cooling plate; a first temperature sensor adapted to generate a first temperature signal indicative of a first temperature level of the first battery cell; a second temperature sensor adapted to generate a second temperature signal indicative of a second temperature level of the second battery cell; a third temperature sensor adapted to generate a third temperature signal indicative of a third temperature level of the cooling plate; a microprocessor operably coupled to the compressor and the first, second, and third temperature sensors; the microprocessor being programmed to determine a maximum temperature level of the first and second temperature levels of the first and second battery cells based on the first and second temperature signals; the microprocessor being further programmed to determine a target temperature level for the cooling plate based on the maximum temperature level associated with the first and second battery cells. the microprocessor being further programmed to determine a temperature error value based on a difference between the third temperature level of the cooling plate and the target temperature level of the cooling plate; the microprocessor being further programmed to determine a desired RPM value for the compressor based on the temperature error value; and the microprocessor being further programmed to generate a control signal to induce the compressor to operate at an RPM corresponding to the desired RPM value, such that the compressor pumps a refrigerant through the condenser and the conduit of the cooling plate to cool the first and second battery cells.