Research
Innovative Panel Plating for Heterogeneous Integration
A Method to Investigate PCB Supplier Rework Processes and Best Practices
The Effects of PCB Fabrication on High-Frequency Electrical Performance
Aerosol Jet Printing of Conductive Epoxy for 3D
EOS Exposure of Components in the Soldering Process
High Thermo-Mechanical Fatigue and Drop Shock Resistant Alloys
Filling of Microvias and Through Holes by Electrolytic Copper Plating
NASA DOD Phase 2: Copper Dissolution Testing
MORE RESEARCH
Latest Industry News
Smartphone Shipments to Plummet 11.9% in 2020
PC market to dip 7% this year
Alternate Roads to Flexible Electronics
Huawei hid business operation in Iran after Reuters reported links to CFO
Global Distributor Group Tackles Tariff Inefficiencies
How to Set Boundaries While Working Remotely
Apple must face U.S. shareholder lawsuit over CEO's iPhone, China comments
The AI-Based Competitive Revolution
MORE INDUSTRY NEWS

Solving Electric Vehicles Long Charging Times and Short Battery Life



Solving Electric Vehicles Long Charging Times and Short Battery Life
Electric vehicle owners may soon be able to pull into a fueling station, plug their car in and in 10 minutes, drive out with a fully charged battery.
Technology Briefing

Transcript


As we’ve consistently pointed out, charging battery-electric cars at home, at night, is incompatible with photo-voltaic generation peaks, so this energy tends to be generated by fossil fuel plants. Furthermore, electric vehicles still have short-range, long charging times, and limited battery lives. But researchers at Penn State are on the way to solving some of these problems. For instance, electric vehicle owners may soon be able to pull into a fueling station, plug their car in, go to the restroom, get a cup of coffee and in 10 minutes, drive out with a fully charged battery.

Fast charging is the key to enabling the widespread introduction of electric vehicles.

The Penn State team recently demonstrated a way to charge an electric vehicle in ten minutes for a 200-to-300-mile range. And they were able to maintain this performance over 2,500 charging cycles, or the equivalent of half a million miles of travel.

Lithium-ion batteries degrade when rapidly charged at ambient temperatures of under 50 degrees Fahrenheit. Why? Because, rather than the lithium ions smoothly being inserted into the carbon anodes, the lithium deposits in spikes on the anode surface. This lithium plating reduces cell capacity and also causes electrical spikes and unsafe battery conditions.

Batteries heated above the lithium plating threshold, whether by external or internal heating, do not exhibit lithium plating. As reported in the journal Joule, the team realized that if the batteries could be heated up to 140 degrees Fahrenheit for only 10 minutes and then rapidly cooled to ambient temperatures, lithium spikes would not form, and heat degradation of the battery would also not occur. And, the rapid cooling of the battery is accomplished using the cooling system designed into the car.

The 10-minute charging is essential for the adoption of electric vehicles because it solves the “range anxiety problem.

The self-heating battery uses a thin nickel foil with one end attached to the negative terminal and the other extending outside the cell to create a third terminal. A temperature sensor attached to a switch causes the electron to flow through the nickel foil to complete the circuit. This rapidly heats the nickel foil through resistance heating and warms the inside of the battery.

The U.S. Department of Energy supported this work.

Comments

No comments have been submitted to date.

Submit A Comment


Comments are reviewed prior to posting. You must include your full name to have your comments posted. We will not post your email address.

Your Name


Your Company
Your E-mail


Your Country
Your Comments



Board Talk
How Effective Is Nano Coating On Stencils?
What Causes Board Delamination?
01005 Component Challenges and Bugs
Sticky Residue Under Low Clearance Parts
Soldering Relays Intrusively in Lead Free Process
Printing vs. Dispensing
Maximum Board Temperature During Tin-Lead
Is There a Spacing Spec for SMD Components?
MORE BOARD TALK
Ask the Experts
HASL vs. Immersion Gold
Very Low Temp PCBs
Looking for Long-term Component Storage Options
Baking After Cleaning Hand Placed Parts
Conformal Coating Recommendation
Burned Chip Repair
BGA Component Grounding Problem
What is the IPC Definition of Uncommonly Harsh?
MORE ASK THE EXPERTS