tesla debacle highlights need for new ev battery technology

Electric cars must have been hit badly: this weekend\'s New York Times reported that the Tesla Model S was unable to maintain enough charging, and after a Chevrolet Volt fire last year during the test, A review by the National Highway Traffic Safety Administration the facility raised doubts and criticisms about lithium-powered vehiclesion batteries. The Li-
The ion batteries in these cars are hailed as the beacon of the future. -
Green, safe and reliable.
However, these technologies are constantly developing, and the shortcomings in the current development stage are not surprising (
You remember nickel.
Metal hydrogen batteries and EV1? ). The Li-
Of course, the ion battery has long been hailed as the best electric vehicle battery in the world, but its flaws in continuous heating and scope of delivery have prompted innovators to seek alternatives. Sure, a Li-
More than 40 miles of ion batteries will get you around town on any day, but what about your Griswold?
Esque family holiday or your D. C. -to-New York go-for-the-The neck Odyssey?
Can we imagine a 500 mile road trip powered by a battery?
Electric vehicles are just reaching mainstream capacity, but automakers have to think about what the next step will be. Li-ion vs.
NiMH: refreshing the traditional logic
Compared to cheaper NiMH, ion offers more storage in a more compact space.
The battery capacity is measured by the energy density of Watt/kg and the energy density of Li-
The ion is twice that of NiMH.
For the same reason, Li
The cost of ions is almost twice that of NiMH ($800-
$1,000 per kWh, while $500 to $550 per kWh).
As a result, many hybrids use NiMH in order to save money;
For example, Prius uses a battery pack with 168 NiMH batteries that can produce 1. 2 volts each.
Also, according to Andy Chu, vice president of battery marketing and communications --
Manufacturer A123, because hybrids don\'t rely entirely on electricity, they can sacrifice some energy density and stick to NiMH without worrying about running out of juice.
As of 2010, 98% of electric vehicles used Li-
Lithium will be used 2017,100%-
According to Strategic Analysis, ion.
In 2010, only 11% of light hybrid electric vehicles used Li-
But the forecast is twice that of 2017.
As a continuing sign of a trend away from NiMH, the all-hybrid electric vehicle will move from 0% Li-ion-
Power supply to 17% in the same time interval.
In other words, Lee-
With the development of NiMH, ion is slowly taking over the hybrid market.
But for anyone who doesn\'t live under the rocks, this may create some major anxiety for you on your future road trip.
As the battery range (i. e.
The distance your battery is fully charged will make you)
Increasingly becoming the focus of consumer attention, the increasingly compact power will be equivalent to the battery choice for hybrid and electric vehicles.
Volt capacity is 16 KW, all
Nissan Leaf electric 24-degree electricity.
Tesla sports car, it does use Li-
Ion batteries, which store up to 56 KW of electricity at 215 KW hours (
NiMH battery pack with the same power will weigh more than twice).
Tesla\'s technology is to assemble thousands of top cars. notch lithium-
The ion battery becomes liquid-
Cooling the battery pack.
To be sure, more and more broad chemicals and materials are used to improve the performance of batteries, such as from carbon-
Silicon-based anode-based ones.
But even if these improvements happen, Li-
It is not immune to ion-pair competition.
The man deprived of the throne: WillIs the rule of ions over? Li-
Ion batteries are generally lower-
Maintenance, because they lack memory problems, there is no need for a planned cycle to extend battery life.
Like all the batteries, Li-
No matter what Tesla CEO Elon Musk insists, ion doesn\'t perform well in extremely hot or cold weather.
The design of lithium has become more expensive to monitor thermal changes. But though Li-
For now, at least, Ion is king and it is not absolutely right in the end.
Will there be more stable chemicals that don\'t have so many side effects of degradation when the battery is circulating?
Innovators say yes, but it is unclear how long it will take to implement and commercialize these alternative energy sources.
The huge hope in the holy grail of the battery series seems to be lithium air technology.
The energy density of lithium air is obviously 5,210 wh/kg, while the energy density of lithium air is 160 wh/kg, 90-120 wh/kg
According to research firm Frost & Sullivan, they are magnese oxide and lithium iron phosphate, respectively.
Cars limit their battery capacity to 300 liters, which does not prevent those who wish to realize their dream of 500 miles.
But it will definitely increase the cost of R & D.
Your typical battery consists of an anode, a cathode, and an electrolyte part.
Anode with air--
It\'s like lithium. air technology--
In the long run, it can be more effective with the reduction of battery weight and better energy density, power, speed, range and battery life cycle.
IBM in Silicon Valley is the leader in developing this technology, lithium-
Ion technology experts estimate that there are still 10 years left.
However, if the air is your anode, a major roadblock hinders the technology.
\"You have to expose some cells to the outdoors,\" Tan said . \".
\"One has to develop a membrane that allows this interaction, but also to maintain integrity within the cell.
This is a big mechanical problem.
For the battery prediction, the technology that follows the phone to decide the future of the car battery is purely speculative at this point.
But it\'s a good bet to look at some of the smaller techniques.
Twenty years ago, when the first phones came out, they had NiMH batteries.
With the increase in battery energy, engineers
Ion development.
\"Keep an eye on mobile phones and laptops,\" Tan said . \".
\"When people get higher energy density, they first apply it to small consumer electronics.
If you look at the laptops, they are still using the same cylindrical battery.
They have been developing better materials but still use the concept of lithiumion.
\"Lithium air is slow in charging and discharging.
Strategic Analytics, a research firm, says about 30 KW of \"peak energy flow\" requires smaller lithium-
Ion battery, maybe another super
A capacitor that allows the car to accelerate and regenerate braking.
It is not easy to ask for repeated charges after a long trip.
Part of it is infrastructure at home.
For the home 4 KW battery, it may take more than 30 hours to recharge.
All of a sudden, it seems worth five minutes in the gas tank.
If you have a kW coming out of the wall and a battery with an energy density of 20 KW/hour, you will charge the 110 V socket, which will be a little less than 20 hours
Attack and battery: geopolitical issues, in addition to what he said/he said about Tesla\'s spat and outlook for the future of battery technology, there is a political perspective. For lithium-
Batteries, enterprises rely on lithium abroad. Sure, U. S.
Dependence on heavy oil exporters like Saudi Arabia may not exist, but it is still accompanied by shame.
Lithium is available in South America, China and Afghanistan, but most car companies are opening up markets in Argentina and Chile. -
With troves that are far from infinite.
\"The main concern now seems to be the rare earth element,\" said Mike Omotoso, senior manager of global power trains at Mike Automotive.
\"China has a high percentage of these materials and they have been restricting their use and exports.
That\'s why companies like Honda and Toyota have been frantically looking at electric cars and other components used in hybrid cars that do not require rare earth elements or use less than they currently need.
\"In addition to more efficient materials, the company is also working to improve zinc-with Zinc-
BR in ZBV energy and zinc air technology-
As an efficient and sustainable solution at the forefront of battery technology for electric vehicles.