Design and Simulation of an Active Thermal Cooling System for Lithium-ion Battery Pack for Portable Pulsed Power Loads
Abstract
Energy Storage Systems (ESSs) can be applied to compact portable pulse power systems such as electromagnetic railguns (EMRGs), and high-power laser directed energy weapons (LDEWs). In mobile land, shipboard, or submarine applications, available energy and thermal management are key design concerns. Lithium-ion batteries compared to traditional lead-acid, have the highest current values of specific energy and are more efficient, consequently are well-suited to implementation in high power or high-energy configurations. With the ever-increasing size and design complexity of the Li-ion battery pack for energy demanding applications, the protection, performance, integrity, and longevity of the battery is of increasing concern to Government and Defense organizations as electrification becomes more widely deployed in the field. Battery life can suffer from premature aging or degradation due to the heat generation, particularly during fast charging and discharging cycles. The internal heating and capacity of Li-ion batteries is strongly dependent on the discharge rate, with higher discharge rates increasing internal heating and reducing the available capacity. Moreover, semiconductor laser diode arrays (LDA) used in LDEWs, may draw 100kW or more and generate a lot of heat. Excessive heating and thermal cycling play a key role to limit the reliability and lifetime of LDAs. In this paper, a high-level simulation study will be presented to illustrate virtual prototyping of an active cooling system for maintaining the temperature of an Li-ion battery pack and pulse power driven LDA load. Active cooling was designed as a complementary system, utilizes a coolant circulated via a motor driven thermohydraulic pump, through pipes, a crossflow heat exchanger and cooling plates resident against the battery pack and the LDA assembly.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 21, 2022
- Accession Number
- AD1166390
Entities
People
- Bryan Kelly
Organizations
- Synopsys